SIXTH FIVE-YEAR REVIEW REPORT FOR
CENTRAL ILLINOIS PUBLIC SERVICE CO. SUPERFUND SITE
CHRISTIAN COUNTY, ILLINOIS
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Prepared by
U.S. Environmental Protection Agency
Region 5
CHICAGO, ILLINOIS
7/4/2024
X Douglas Baliotti
Douglas Baliotti, Director
Superfund & Emergency Management Division
Signed by: DOUGLAS BALLOTTI
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Table of Contents
LIST OF ABBREVIATIONS & ACRONYMS 2
I. INTRODUCTION 4
FIVE-YEAR REVIEW SUMMARY FORM 5
II. RESPONSE ACTION SUMMARY 5
Basis forTaking Action 5
Response Actions 6
Status of Implementation 8
Institutional Controls 10
Table 2 below provides a summary of ICs that have been implemented for the Site 10
Systems Operations/Operation & Maintenance 11
III. PROGRESS SINCE THE LAST REVIEW 13
IV. FIVE-YEAR REVIEW PROCESS 14
Community Notification, Involvement & Site Interviews 14
Data Review 14
Site Inspection 17
V. TECHNICAL ASSESSMENT 17
QUESTION A: Is the remedy functioning as intended by the decision documents? 17
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels, and remedial action
objectives (RAOs) used at the time of the remedy selection still valid? 18
QUESTION C: Has any other information come to light that could call into question the
protectiveness of the remedy? 19
VI. ISSUES/RECOMMENDATIONS 20
OTHER FINDINGS 20
VII. PROTECTIVENESS STATEMENT 20
VIII. NEXT REVIEW 21
APPENDIX A-REFERENCE LIST 22
APPENDIX B - ADDITIONAL SITE INFORMATION 24
APPENDIX C-FIGURES AND SITE PHOTOS 25
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LIST OF ABBREVIATIONS & ACRONYMS
Ameren
Ameren Illinois Company
ARAR
Applicable or Relevant and Appropriate Requirement
bgs
Below Ground Surface
CERCLA
Comprehensive Environmental Response, Compensation, and Liability Act
CD
Consent Decree
CFR
Code of Federal Regulations
CIPS
Central Illinois Public Service
COCs
Contaminants of Concern
IAC
Illinois Administrative Code
EPA
United States Environmental Protection Agency
ESD
Explanation of Significant Differences
FFS
Focused Feasibility Study
FS
Feasibility Study
FYR
Five-Year Review
Illinois EPA
Illinois Environmental Protection Agency
IRA
Immediate Removal Action
ICs
Institutional Controls
ISCO
In-Situ Chemical Oxidation
ISS
In-Situ Solidification and Stabilization
LTS
Long-term Stewardship
MGP
Manufactured Gas Plant
MCL
Maximum Contaminant Level
mg/L
Micrograms Per Liter
MNA
Monitored Natural Attenuation
MW
Monitoring Well
NCP
National Oil and Hazardous Substances Pollution Contingency Plan
NPL
National Priorities List
OU
Operable Unit
O&M
Operation and Maintenance
PAHs
Polynuclear Aromatic Hydrocarbons
PPB
Parts Per Billion
PRP
Potentially Responsible Party
P&T
Pump and Treat System
RA
Remedial Action
RAO
Remedial Action Objective
RDI
Remedial Delineation Investigation
RD
Remedial Design
Rl
Remedial Investigation
RPM
Remedial Project Manager
ROD
Record of Decision
SARA
Superfund Amendments and Reauthorization Act of 1986
SCGW
Soil Component to Class 1 Groundwater
Site
Central Illinois Public Service Co. Superfund Site
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TBC To Be Considered
UU/UE Unlimited Use and Unrestricted Exposure
UECA Uniform Environmental Covenants Act
VOCs Volatile Organic Compounds
3
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I. INTRODUCTION
The purpose of a Five-Year Review (FYR) is to evaluate the implementation and performance of a
remedy in order to determine if the remedy is and will continue to be protective of human health and
the environment. The methods, findings, and conclusions of reviews are documented in FYR reports
such as this one. In addition, FYR reports identify issues found during the review, if any, and document
recommendations to address them.
The United States Environmental Protection Agency (EPA) is preparing this FYR pursuant to the
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Section 121,
consistent with the National Oil and Hazardous Substances Pollution Contingency Plan (NCP) (40 CFR
Section 300.430(f)(4)(ii)) and considering EPA policy.
This is the sixth FYR for the Central Illinois Public Service (CIPS) Co. Superfund Site (the Site). The
triggering action for this statutory review is the completion of the fifth FYR report. The FYR has been
prepared due to the fact that hazardous substances, pollutants, or contaminants remain at the Site
above levels that allow for unlimited use and unrestricted exposure (UU/UE). The Site consists of one
Operable Unit (OU), which will be addressed in this FYR. OU1 addresses the soil and groundwater
remedy.
The Site FYR was led by David Linnear, Remedial Project Manager (RPM) with the EPA, in affiliation
with the Illinois Environmental Protection Agency (Illinois EPA). Participants included Greggory Miller
(Illinois EPA) and Ruth Muhtsun (EPA Community Involvement Coordinator). The relevant entities,
including the Potentially Responsible Party (PRP) and Illinois EPA, were notified of the initiation of the
FYR on 8/11/2023. The review began on 8/11/2023.
Site Background
The Site (See Figure 1 in Appendix C) is located in Christian County at 917 South Webster Street in
Taylorville, Illinois. The Site is 2.4 acres in size. The Site is bordered on the north by a residential area.
On the south, it is bounded by Seaman Estates subdivision which consists of eight large, wooded tracts
with several single-family residences. All the tracts surround Seaman Estates Pond. To the east of the
Site is Manners Park, which is the City's main multi-use facility. The Site is bounded immediately on the
west by the Ameren CIPS pole yard and railroad tracks. None of these uses are expected to change in
the foreseeable future.
A manufactured gas plant (MGP) operated on the Site property from 1883 to 1932. In 1932, the plant
was closed and most of the above ground structures were torn down, and the below ground tanks
were filled with debris and left in place. These structures and associated building debris have since
been removed from the Site. A septic tank contractor discovered coal tar contamination at the Site in
October 1985. Coal tar is a byproduct of the coal gasification process and is comprised mainly of
polynuclear aromatic hydrocarbons (PAHs), such as naphthalene and benzo(a)anthracene, as well as
volatile organic compounds (VOCs), such as benzene and toluene.
Groundwater flows from the northeast to southwest direction through a fairly well sorted sand and
gravel unconfined aquifer. The aquifer extends 90 feet below ground surface (bgs) and is underlain by
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bedrock comprised of limestone and dolomite. The water table beneath the Site is approximately 15
feet bgs.
The Site was listed on the National Priorities List (NPL) on August 30, 1990. There currently is no
anticipated future use for the Site due to contaminants remaining in place.
FIVE-YEAR REVIEW SUMMARY FORM
SITE IDENTIFICATION
Site Name: Central Illinois Public Service Co.
EPA ID:
ILD981781065
Region: 5
State:IL
City/County: Taylorville/Christian County
NPL Status: Final
Multiple OUs?
No
Has the site achieved construction completion?
Yes
Lead agency: EPA
[If "Other Federal Agency", enter Agency name]:
Author name (Federal or State Project Manager): David Linnear
Author affiliation: EPA
Review period: 8/11/2023 - 5/9/2024
Date of site inspection: 3/26/2024
Type of review: Statutory
Review number: 6
Triggering action date: 6/24/2019
Due date (five years after triggering action date): 6/24/2024
I. RESPONSE ACTION SUMMARY
Basis for Taking Action
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The Site investigation conducted by Illinois EPA in 1986 concluded soil at the Ameren CIPS Site property
and sediments in the Seaman Pond near the Site property were contaminated with PAHs. Groundwater
at the Site was contaminated with PAHs and VOCs. The primary contaminants of concern (COCs)
affecting the soil, sediment, debris, and groundwater at the Site were VOCs, including benzene,
toluene, ethyl benzene, and xylenes; and other organics, including PAHs and phenols. Benzene
represents the most prevalent detected VOC in groundwater. Since the initial site investigation,
additional COCs for the Site have expanded to include benzo(a)anthracene, benzo(a)pyrene, and
naphthalene. Potential receptors that could have been affected through direct contact, ingestion, and
inhalation by site COCs if not addressed included nearby local residents and recreational visitors to
Manners Park, which is a community park in Taylorville. No ecological risk assessment was done to
identify further risk and threats for ecological receptors.
Response Actions
Environmental contamination was first discovered in October 1985 when coal tar was observed in
subsurface soil during utility work. An Immediate Removal Action (IRA) to locate and remove all buried
tanks and pits at the Site which contained coal tar or other wastes was initiated in January 1987 and
completed in March 1987. The IRA was conducted at the Site voluntarily by CIPS, an Ameren
predecessor, under Illinois EPA's oversight, to excavate and dispose of approximately 12,000 cubic
yards of impacted soil down to the water table and approximately 3,000 cubic yards of sediments in
the drainage swale off the source property. In October 1987, Ameren provided a permanent
alternative water supply to approximately 20 residents and plugged and abandoned associated private
drinking water wells.
The Illinois EPA issued a Record of Decision (ROD) on September 30, 1992, with EPA concurrence (EPA,
1992). The selected remedial action for the Site included documenting the previously implemented IRA
as part of the remedy. Major elements of that included:
Excavation of source materials above the water table (9,000 cubic yards of soil; 3,000 cubic
yards of sediment); disposal of source materials off-Site in a permitted landfill; and backfilling of
excavation areas with clean materials.
Connection of potentially affected residents to the public water supply; and plugging and
abandonment of associated private drinking-water wells.
Monitoring of groundwater, surface water, pond sediment and fish downstream of the Site;
completion of a remedial investigation (Rl) and feasibility study (FS) for the Site.
The final remedial action selected in the 1992 ROD provided for treatment of the remaining principal
threat at the Site, posed by groundwater contamination. The major components of the selected
remedy included:
Construction of an on-Site groundwater pump and treat (P&T) system; and operation and
maintenance (O&M) of the system until Agency cleanup objectives are met.
Expansion of the monitoring program for untreated groundwater and treatment system
effluent, to supplement current monitoring efforts.
Complete fencing (with signs) of the Site; and land use and deed restrictions, to the extent
possible, for the Site and affected off-Site areas.
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The remedial action objectives (RAOs) for the Site were to treat the Site-related constituents contained
in the groundwater to meet cleanup levels to protect potential future residential users of groundwater.
Residual subsurface Site-related constituents should be prevented from migrating off-Site. Access to
the Site and performance of intrusive work on the property should be restricted. Accomplishing these
specific objectives, accomplishes the general objective to mitigate the endangerment to the public
health, welfare, and the environment.
The aquifer impacted by the Site was considered Class I, Potable Resource Groundwater, as defined by
the Illinois Groundwater Protection Act. No soil or sediment cleanup levels were established because
they completed the IRA which established soil and sediment cleanup levels necessary to ensure no
health or ecological risks or threats remained in 1987 therefore none were required. The groundwater
cleanup levels, based on MCLs, are presented in Table 1 below.
Table 1: Cleanup Levels for COCs in Groundwater
Contaminant
Class 1 Groundwater Cleanup Level (in micrograms per liter [mg/L])
VOCs:
Benzene
0.005
Toluene
1.0
Ethylbenzene
0.7
Xylenes
10
Trans-l,2-dichloroethylene
0.1
2-Methylphenol
0.35
4-Methylphenol
0.35
Dichloromethane
0.0002
Bromoform
0.0002
Di-n-butyl phthalate
0.7
Bis(2-ethylhexyl)phthalate
0.0027
PAHs:
Acenaphthene
0.42
Anthracene
2.1
Benzo(a)anthrecene
0.00013
Benzo(a)pyrene
0.00023
Benzo(b)fluoranthene
0.00018
Benzo(k)fluoranthene
0.00017
Chrysene
0.0015
Dibenzo(a,h)anthracene
0.0003
Fluoranthene
0.28
Fluorene
0.28
lndeno(l,2,3-c,d)pyrene
0.00043
Naphthalene
0.025
Pyrene
0.21
Other Non-Carcinogenic PAHs:
Acenaphthylene
0.21
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Benzo(g,h,i)perylene
0.21
Phenanthrene
0.21
On September 6, 2005, the Illinois EPA issued an Explanation of Significant Differences (ESD), with EPA
concurrence that included changes to the remedy selected in the 1992 ROD (Illinois EPA, 2005). The
changes were:
Allow Ameren CIPS to conduct a pilot study on an alternate treatment method in an attempt to
reduce or eliminate the length of operation time of the current groundwater P&T system; The
ESD allowed CIPS to conduct a pilot study for chemical oxidant injection for 90 days.
Revise the clean-up objective for benzo(a)pyrene as a new Maximum Contaminant Level (MCL)
of 0.0002 mg/L had been recently established for this constituent; and
Update the clean-up objectives related to surface water quality standards for the other COCs
based on new toxicity information.
Status of Implementation
The Illinois EPA executed a Consent Decree (CD) with Ameren in March 1994, under which Ameren
agreed to perform the Remedial Design/Remedial Action (RD/RA) for the Site (the March 1994 CD). The
Illinois EPA oversaw the RD/RA. By February 1995, a groundwater P&T system was installed to address
groundwater impacts. The P&T system has operated continuously, except as noted below. Illinois EPA
approved a final site O&M Plan in February 1995 (Ameren, 1995). Ameren has continued to conduct
O&M activities at the Site. The Site has been in the monitoring phase since 1995. Site-related
contaminants have declined in the groundwater, however, there are still some exceedances of the
State standards in groundwater.
In-Situ Chemical Oxidation Activities
In October 2006, as part of the examination of alternate treatments, the P&T system was temporarily
turned off and a series of in-situ chemical oxidation (ISCO) injections were performed at the Site to
evaluate chemical and biological oxidation of contaminants. The treatment system was shut down for
approximately three months and was restarted in January 2007. Monitoring of groundwater was
increased while the P&T system was shut down; and no off-Site migration of groundwater
contaminants were detected. Additional ISCO activities were conducted in 2010 and the groundwater
P&T system at the Site was turned off to allow time for chemical/biological reactions to occur. The P&T
system was restarted in two phases: the western extraction well was restarted on January 24, 2013,
and the eastern extraction well was restarted on February 7, 2013.
2015 Groundwater Modeling Study
Groundwater at the Site was predictive modeled in 2004 and 2009 by Barr Engineering. More recently,
groundwater was modeled by Barr Engineering in 2015 utilizing a groundwater flow and solute
transport model (Barr 2015). The 2015 modeling was developed to provide a tool for estimating the
plume extent if the extraction wells were turned off in support of a transition to monitored natural
attenuation (MNA) and/or long-term monitoring. The model assumed Site conditions included
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groundwater flowing to the south during pumping and staying generally flat when no pumping took
place. The model scenarios examined predictive concentrations over a 100-year period.
P&TShutdown and Rebound Study
In September 2017, the P&T system was shut down and Ameren conducted a rebound evaluation. The
rebound evaluation initially demonstrated that the P&T system was controlling the plume and
preventing further migration of COCs. After nearly two years without the P&T system, a slight increase
in COC concentrations was observed in samples collected from monitoring wells toward the
downgradient edge of the Site. The source removals and injection activities that Ameren has
conducted have significantly reduced groundwater concentrations to levels slightly elevated relative to
the remedial goals. The P&T system continues to reduce groundwater concentrations, however, as
indicated by the rebound evaluation conducted in 2019 and by evaluation of the groundwater data
collected to date, it is reducing concentrations of COCs at a lower rate.
Groundwater and surface water monitoring has continued without interruption since 2019. The P&T
system ran without any problems prior to its shutdown in 2017. Ameren tested the P&T system and
resumed operation consistent with remedy implementation in June 2019. Ameren continues to
conduct quarterly groundwater sampling and sampling of Seaman Estate Pond.
2022 Investigation Activities
Ameren conducted a soil and groundwater investigation in 2022 to determine the nature and extent of
residual contamination in soil as a continuing source of COCs in groundwater. Many of the COCs in
groundwater have been removed, with diminishing reduction of residual concentrations over the last
decade. Although a substantial reduction was initially observed and despite adjustments and
improvements to the P&T system, this approach has not completely attained cleanup standards to
date. In June 2023, Ameren prepared a Focused Feasibility Study (FFS) to present the development and
re-evaluation of potential other remedial actions for the Site. After further treatment of residual soil,
Illinois EPA determined groundwater concentrations are expected to meet remediation goals much
sooner than continuing operation of the P&T system. The existing P&T system, while effectively
removing most of the groundwater contamination, would take an estimated 100 years or longer to
meet the Illinois Groundwater Quality Standards (ERM, 2023).
2024 Current Status
The Illinois EPA and Ameren are considering remedial alternatives to complete cleanup of the Site to
achieve RAOs within a reasonable amount of time. In July 2023, the Illinois EPA released a Proposed
Plan to the public outlining six different remedial technologies that were evaluated in the FFS. Illinois
EPA's current preferred remedial alternative, pending public comment, is in-situ solidification and
stabilization (ISS) with monitored natural attenuation (MNA) (Illinois EPA, 2023). The ISS pilot study
activities, including the abandonment of certain monitoring wells, and was approved by the Illinois EPA
in a letter dated June 21, 2023.
For this alternative, the P&T system, including monitoring and extraction wells and associated piping,
would be permanently removed so ISS can be implemented. For ISS, a slurry mixture of binding agents
is developed and mixed with subsurface soil using large diameter augers. The mixture then cures and
hardens in situ to form a stabilized, monolithic subsurface structure. Stabilization can also include
mixing contaminated soil with other binding agents, which are intended to cause a chemical reaction
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with COCs to make them less likely to be released to the surrounding environment. During
implementation of ISS, downgradient monitoring wells would be selected and/or installed to monitor
groundwater quality. These monitoring wells would be sampled prior to remedial action
implementation, then during remedial activities, and be used to demonstrate the point of compliance.
Illinois EPA will evaluate public comments regarding the preferred remedial alternative during the
public comment period before selecting a final remedial alternative. Based on new information or
public comments, Illinois EPA may modify its preferred remedial alternative or select another
alternative.
Institutional Controls
Table 2 below provides a summary of ICs that have been implemented for the Site.
Table 2: Summary of Implemented ICs
Media, engineered
controls, and areas not
supporting UU/UE based
on current conditions
ICs
Needed
ICs Called
for in the
Decision
Documents
Impacted
Parcel(s)
IC
Objective
Title of IC Instrument
Implemented and Date
(or planned)
Soil
Yes
Yes
Area of soil
covered to
prevent
direct
contact with
waste and
infiltration of
water to the
waste
To prevent direct
contact with
residual hazardous
waste and
infiltration of water
through the waste
by prohibiting the
residential use of
the property
Uniform Environmental
Covenants Act (UECA)
Environmental
Covenant signed
August 20, 2012 and
recorded August 30,
2012 applies to 2.4
acres.
Groundwater
Yes
Yes
Groundwater
underlying
the Site
Property
To prohibit
groundwater use
until cleanup
standards are
achieved
UECA Environmental
Covenant signed
August 20, 2012 and
recorded August 30,
2012 applies to 2.4
acres.
Soil
Yes
Yes
Area of the
Site property
To prohibit
activities and uses
which may
interfere with work
performed
UECA Environmental
Covenant signed
August 20, 2012 and
recorded August 30,
2012 applies to 2.4
acres.
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Groundwater
Yes
Yes
P&T system
including
related
equipment
To prohibit
interference with
remedy component
UECA Environmental
Covenant signed
August 20, 2012 and
recorded August 30,
2012 applies to 2.4
acres and City of
Taylorville ordinance.
Groundwater
Yes
Yes
Contaminate
d
Groundwater
outside Site
Property
To prohibit
groundwater use
until cleanup
standards are
achieved
Covering outside and
including area of UECA
Environmental
Covenant signed
August 20, 2012 and
recorded August 30,
2012 applies to 2.4
acres.
A map showing the area in which the ICs apply is included in Attachment C and depicts the current
conditions of the Site and areas which do not allow for UU/UE.
Status of Access Restrictions and ICs:
Effective ICs are in place for the Site. On August 30, 2012, Ameren recorded an Environmental
Covenant which granted Illinois EPA and EPA access to the Site and restricted the installation of wells,
use and handling of groundwater, and handling of soils on the property. This covenant applies to the
entirety of the 2.4-acre parcel on which the Site is located. Further, there are no current groundwater
users at or downgradient of the Site due to the City of Taylorville's ordinance restricting the use of
groundwater within the city limits including parcels to the south, downgradient of the Site by the local
ordinance and an environmental covenant prohibiting the installation of potable groundwater wells or
use of the groundwater.
Current Compliance:
Based on the Site inspections, and discussions with the PRP and Illinois EPA, the ICs and required use
restrictions are being complied with. EPA is not aware of Site or media uses, such as groundwater,
which are inconsistent with the stated objectives to be achieved by the ICs. The P&T remedy appears
to be functioning as intended at this time. No Site uses which are inconsistent with the implemented
ICs or remedy IC objectives were noted during the FYR Site inspection. The Ameren provides a status of
ICs in the quarterly O&M reports.
Long Term Stewardship:
Long-term protectiveness requires continued compliance with the ICs consisting of land use and
groundwater use restrictions to ensure the remedy continues to function as intended.
Currently ICs are being monitored on a quarterly basis. A finalized Long-term Stewardship (LTS) Plan
dated November 7, 2022, was approved by Illinois EPA on April 12, 2023 (Ameren, 2022) to help ensure
that ICs continue to be monitored and maintained at the Site.
Systems Operations/Operation & Maintenance
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Ameren has been conducting O&M activities at the Site since September 6,1995, when the Preliminary
Close Out Report was completed. All O&M activities are overseen by Illinois EPA and enforced under
the March 1994 CD. In February 1995, a groundwater extraction and treatment system (P&T system)
was installed to address groundwater impacts. The P&T system is designed to operate continuously.
Ameren personnel operate the facility at the Site, providing management and environmental support
for Ameren. Pumping and treatment of groundwater occurs 24 hours per day. The facility is operated
full-time with operation staff present daily and reports to the Christian County Water Reclamation
District.
The P&T system at the Site consists primarily of two carbon units operating in series. The process for
the extracted groundwater is to treat it with a combination of iron removal filtration through up to
three, parallel bag filters. Bag filters for solids removal are installed prior to groundwater entering the
first carbon unit. The groundwater is then filtered through a carbon adsorption system which consists
of two granular activated carbon filters, in sequence.
The system has provisions to backwash the carbon units, as necessary. Raw groundwater entering the
facility is analyzed for several compounds, including organics, twice per month. Ameren samples water
between the carbon units twice per month to monitor organic breakthrough. Treated groundwater is
transported via underground piping (with a directional valve) to discharge at either a point at the top
of the drainage swale or a point below the dam of the Seaman Estates Pond. The discharge point can
be changed by the switching the valve at the beginning of the piping system.
The treated water is continuously discharged. Discharged water is sampled weekly to confirm
continued compliance with discharge requirements to meet average and/or daily maximum
contaminant concentrations, as set in the 1992 ROD and the 2005 ESD, before discharge from the
facility. The maximum contaminant concentrations set for discharged water are the same as the RAOs
for groundwater at the Site.
Ameren submits sample results and flow information to Illinois EPA. Since the startup of the treatment
system in early 1995 until December of 2023, a total of 1,360,005,065 gallons of groundwater have
been treated. Pumping rates have been adjusted throughout the 27 years of operation. Currently the
P&T system operates at the lowest rate (50 gallons per minute would be sufficient for hydraulic
containment), which is sufficient to provide effective groundwater control; and sampling has indicated
no exceedances at off-Site downgradient wells.
During the current FYR reporting period, operation of the P&T system was interrupted intermittently
from August 2021 to May 2022 due to valve failures, supply chain shortages, filter basket dropouts,
and/or power outages, but these issues were promptly addressed by Ameren's contractor.
Ameren has been conducting long-term monitoring of groundwater to ensure there is no risk to human
health and the environment. Ameren provides annual O&M reports to the Illinois EPA to document the
work conducted, as well as any problems, corrective actions taken, and changes to reporting
requirements.
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Ameren conducts quarterly groundwater monitoring from a monitoring well network that includes
both on-Site and off-Site well locations. The groundwater monitoring program consists of sampling up
to 31 wells: eight wells on-Site, one well located on the Site's parent parcel, and 22 wells located off-
Site, with 11 of the 20 wells located downgradient of the Site. The network of 31 wells is sampled one
quarter per year and a minimum of 21 wells are sampled during the other three quarters of each year.
Depths of the wells range from approximately 9.5 ft bgs to 94 ft bgs. Subsequent to 2023 ISS Pilot
Study activities, the monitoring network includes the following wells:
Six wells are located within the Site boundary (GW-4R, GW-15, GW-22S & 22D, GW-7,
and GW-14); and
Twelve wells are located outside of the Site boundary (GW-5, GW-16S & 16D, GW-17,
GW-18S & 18D, GW-19S & 19D, GW-20, GW-21, GW-25, and GW-26).
Ameren monitors four additional off-Site wells annually because of the proximity to the baseball field
across the street. These wells include GW-12, GW-101S, GW-102S, and GW-102D.
III. PROGRESS SINCE THE LAST REVIEW
This section includes the protectiveness determinations and statements from the last FYR as well as
the recommendations from the last FYR and the current status of those recommendations.
Table 3: Protectiveness Determinations/Statements from the 2019 FYR
ou#
Protectiveness
Determination
Protectiveness Statement
OUl/Sitewide
Short-term
Protective
The remedy is currently protective of human health and the
environment because the removal of the contaminated soil and the
site fence effectively prevent exposure to residual soil contaminants,
and the provision of an alternative water supply and implementation
of ICs limit exposure to contaminated groundwater. Effective ICs in
the form of an Illinois UECA restrictive covenant are in place.
However, in order for the remedy to be protective in the long-term,
the following actions need to be taken to ensure protectiveness:
restart the groundwater pump and treat system and develop an LTS
Plan or amend the O&M Plan to include LTS procedures.
Table 4: Status of Recommendations from the 2019 FYR
OU#
Issue
Recommendations
Current
Status
Current
Implementation Status
Description
Completion
Date (if
applicable)
OUl/Sitewide
Groundwater
pump and treat
system has not
operated since
September
2017.
Restart the
groundwater
pump and treat
system.
Completed
P&T system was
restarted on June 19,
2019.
6/19/2019
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OUl/Sitewide
Lack of formal
An LTS Plan, or an
Completed
An LTS plan has been
4/12/2023
LTS procedures
amendment to the
composed and
O&M Plan to
implemented.
include LTS
procedures,
should be
developed and
implemented.
IV. FIVE-YEAR REVIEW PROCESS
Community Notification. Involvement & Site Interviews
A public notice appeared in the Breeze-Courier Taylorville, Illinois, on March 8, 2024, informing the
community that a FYR was to take place, listing the major components of the remedy, and informing
them where additional documents could be found. The public was invited to submit any comments
concerning the Site to EPA. The public notice was also posted on the EPA's webpage for the Site at:
www.epa.gov/superfund/central-illinois-publicservice inviting the public to submit comments online.
The results of the review and the report will be made available on EPA's webpage for the Site.
A public meeting was held by Illinois EPA on March 26, 2024, to update the community on the current
pilot study at the Site. The EPA attended the meeting to answer any general questions regarding the
FYR process. No public comments were received resulting from these notices.
Data Review
The Site has been in the environmental monitoring phase since 1995.
Site related COCs have declined in the groundwater since the remedial action began. Cleanup
objectives for groundwater have not yet been met for all COCs at the Site. Cleanup goals have been
met for all environmental media outside of the source Site property boundary.
Annual samples of sediment, water, and fish tissue were collected starting 1989. The analytical results
for all study years are documented in the Seaman Estate Pond study (Ameren 2018). There is no
apparent increasing trend in concentrations over the 20+ years of sampling for those parameters that
have been consistently detected in the sediment.
There have been no reportable detections of any priority PAHs in surface water since 2005. Fish tissue
samples collected indicate the presence of PAHs in all years except 1999, 2000, and 2001, with
reoccurrences from 2002 to 2012. The 1990-2012 analytical scope of work included pesticide and PCB
analyses on fish tissues to further evaluate the overall potential health risk of fish consumption from
Seaman Estate Pond. No concentrations were observed near the FDA Administration action levels in
fish tissues for pesticides and PCBs.
14
-------
The 2018 Seamen Estates Pond Study concluded the PAHs with reportable detections from year to year
for sediment, water and fish tissue have no discernable pattern or relationship to each other. In
locations or years where, reportable detections were observed in sediment or water there was not a
detection in associated fish tissue. The report therefore concluded that there appears to be no direct
relationship between PAH concentrations in the sediments or surface water and the PAHs found in the
fish tissues. The groundwater monitoring results from areas downgradient from the Site demonstrate
that there is no ongoing release of contaminants from the groundwater to the sediments or surface
water of Seaman Estate Pond.
Several VOCs and PAHs remain above cleanup criteria in samples collected from select groundwater
monitoring wells within the Site boundary. Groundwater samples collected from GW-3 and GW-4R
located on the eastern and southern border of the property have historically remained above cleanup
levels. Recent (2023) data indicated benzene and naphthalene still exceed groundwater cleanup
objectives by several orders of magnitude in two monitoring wells (GW-3 and GW-4R), however, they
appear to be trending downward in concentration. Also, this monitoring indicates no contaminants
have migrated off-site or outside of the capture zone. The UECA Environmental Covenant signed
August 20, 2012, and recorded August 30, 2012, prevents anyone from using contaminated
groundwater until Site cleanup objectives are achieved. Below are the highest detections of each
compound in their respective wells for the past five years as per quarterly reports delivered to Illinois
EPA (see chart below):
COC/Well
Cleanup level
in mg/L
2019
2020
2021
2022
2023
Benzene GW-03
0.005
0.0439
0.0471
0.0242
0.0246
0.0056
Benzene GW-4R
0.005
0.753
0.739
0.798
1.15
0.609
Napthalene GW-03
0.025
1.02
1
0.511
0.375
0.0378
Napthalene GW-4R
0.025
4.19
5.56
3.52
3.55
2.38
In addition to benzene and naphthalene, the cleanup level for bis(2-ethylhexylphthalate) has been
exceeded in samples collected from Site monitoring wells GW-03 and GW-4R in the quarterly
groundwater monitoring program. These exceedances do not result in unacceptable current exposure.
No one is drinking the groundwater because there are ICs restricting such use, including not using
private wells.
It should be noted that groundwater samples were not collected from monitoring wells GW-01, GW-
02, and GW-03 during the fourth quarter 2023 groundwater sampling event. Monitoring wells, GW-01
and GW-03 were abandoned by GeoServe Inc, an Illinois licensed driller, on July 5 and July 6, 2023, to
facilitate the ISS pilot study activities at the Site. Monitoring well GW-02 was unable to be sampled
during the fourth quarter 2023 groundwater sampling event due to damage to the well casing.
According to Ameren's contractor, the damaged well casing at GW-02 prevents the gauging and
sampling of this monitoring well. Ameren's contractor recommended that this monitoring well be
abandoned in accordance with Illinois Department of Public Health (IDPH) requirements and plans to
submit a request for approval to abandon the monitoring well to Illinois EPA in the near future.
Monitoring wells were abandoned for two reasons: they were removed for the ISS Pilot study; and
keeping them in place would be ineffective because they were dry. There are sentinel wells
15
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downgradient of the three abandoned monitoring wells to track contamination and remedy
performance.
Benzo(a)anthracene was detected at monitoring well GW-07 above its applicable cleanup level. GW-7
is located in the center of the Site, a few yards south of the main extraction pump shed. This
finding is consistent with historical groundwater analytical results at this location.
Wells on the downgradient perimeter of the Site, which includes monitoring wells GW-16S,
GW-16D, GW-17, GW-22S, GW-22D, GW-25, and GW-26, did not have any exceedances of
cleanup levels, with one exception. Bis(2-ethyhexyl)phthalate was detected with concentrations at
0.00770 mg/L above its applicable cleanup level of 0.006 mg/L at monitoring well GW-16D as of the
first quarterly report of 2024. This finding is largely consistent with historical groundwater analytical
results at this location, as this constituent is intermittently detected at this location. The UECA
Environmental Covenant signed August 20, 2012, and recorded August 30, 2012, prevents anyone from
using on site groundwater or contaminated offsite groundwater until cleanup objectives are achieved.
Other wells further to the south of GW-16D do not show such exceedances. These exceedances do not
result in unacceptable current exposure. No one is drinking the groundwater because there are ICs
restricting such use, including not using private wells. Site data shows contamination to be contained
on-Site and the P&T system to be effective.
There are no soil sampling cleanup levels for soil at the Site in the ROD. Soil sample results were taken
in the 2023 RDI and, as a conservative measure, compared to Illinois EPA Soil Component to Class 1
Groundwater standards (SCGWs) to help delineate the maximum vertical and aerial extent of potential
residual sources in soil below the groundwater table at the Site. SCGW standards are considered to be
more conservative than residential and industrial standards.
For a majority of the soil samples collected, VOC and PAH results are mostly below residential criteria
and background concentrations. Remaining locations where soil samples exceeded the SCGWs are
located within the Site boundary and/or the Ameren-owned parcel associated with the P&T system.
These locations include the following:
Multiple low-level PAH concentrations, especially benz(a)anthracene, were observed in
multiple locations at the Site in surficial soil samples with no correlation to the historic MGP sources.
The majority of the detections were below, at, or only slightly above the background concentrations
for PAHs in metropolitan soil;
Near the roadway east of well GW-4R, PAHs were detected in soils samples at two to three
times the metropolitan background. Based on the sample results, it appears that the PAHs are limited
in extent to the roadway, and do not extend further east into Manners Park;
Soil samples collected in the area of former fuel tanks at the northern portion of the Site were
observed to have VOC exceedances of SCGW for naphthalene and benzene. PAHs were not as
prominent in this area as in the central portion of the Site;
Soil samples collected from the middle of the Site had higher concentrations of COCs. Tar-like
staining and/or non-aqueous phase liquid (NAPL), with a strong hydrocarbon odor, were observed in
some of these borings;
16
-------
Benz(a)anthracene and naphthalene were detected above respective SCGWs in soil samples
collected below 50 feet bgs. at a single location in the former gas holder area. It was accompanied by
elevated VOCs, but appears to be limited in extent to the center of the Site; and
Bis(2-ethylhexyl)phthalate in Soil - Bis(2-ethylhexyl)phthalate was observed exceeding its
SCGW in the groundwater sampling conducted in the south transect. Soil sampling did not indicate an
SCGW exceedance for bis(2-ethylhexyl)phthalate at the Site. The source of the bis(2-
ethylhexyl)phthalate is unknown.
The original purpose of this soil sampling event was to collect data for characterizing the nature and
extent of residual areas of MGP-related PAHs and VOCs in soil that may be contributing to elevated
concentrations of MGP-related COCs observed in the groundwater monitoring program for the Site.
This work was done as a precursor to the pilot ISS study. Further sampling may be required to
determine the source area for soil contamination.
Site Inspection
The inspection of the Site was conducted on 3/26/2024. In attendance were David Linnear (EPA),
Gregg Miller (Illinois EPA), and David Palmer (Ameren). The purpose of the inspection was to gather
data to use in the assessment of the protectiveness of the remedy, including condition of the fencing
and posted signs to restrict access, and condition of the Site itself, (i.e., the cover, P&T system,
monitoring wells, the surrounding land, and ICs). The representatives walked the Site perimeter, noting
the condition of the Site. Fencing was in good condition with appropriate signage. Site access continues
to be adequately restricted.
The Site appeared to be well maintained. There were no signs which would indicate that ponding had
occurred. The inspection revealed changes since the last FYR. The PRPs (Ameren) tested and restarted
the P&T system in July 2019. Groundwater at the Site continued to be extracted and the network of
monitoring wells used to monitor the progress of the P&T system are in good condition. All equipment
used in the groundwater P&T system was in good condition. There were no physical signs of
deterioration which might be indicated by the blackening of brass fixtures on the well heads. The
collection system, high water alarm system, drains and electrical panels were in good condition and
operating. The team looked at monitoring wells and found them to be in good condition with no signs
of vandalism or tampering evident.
Ameren and Illinois EPA stated they have maintained annual visits at the Site and indicated that no
problems have occurred regarding site security and no concerns have been raised by the local
commercial population.
V. TECHNICAL ASSESSMENT
QUESTION A: Is the remedy functioning as intended by the decision documents?
Question A Summary:
17
-------
Yes. The required groundwater P&T system is operational and functioning as intended by the decision
documents.
Remedial Action Performance
The original remedy included soil excavation, a groundwater P&T system, groundwater monitoring,
installation of Site access controls, and ICs. The Site has been in the monitoring phase since 1995. Site-
related contaminants have declined in groundwater although cleanup goals for groundwater have not
been met for all COCs. Because levels remain above cleanup goals, the selected remedy must continue
operating until a new remedial alternative is selected.
System Operations/O&M
O&M practices are ongoing at the Site. Of possible concern is the frequency of breaks and shutdowns
of the P&T system. In the past five years there have been regular shutdowns due to breaks and supply
chain issues, limiting the selected remedy's operation and performance. However, when they occur,
the issues are promptly addressed by Ameren's contractor. The PRP had significant shutdown
problems before 2019 without prompt notification. During this FYR period the PRPs have improved
notification regarding the system being down. Further, Ameren provides annual O&M reports to the
agencies to document the work conducted, as well as any problems, corrective actions taken, and
changes to reporting requirements.
Implementation of Institutional Controls and Other Measures
Effective ICs are in place for the Site. An Illinois UECA restrictive covenant was signed on August 20,
2012, and recorded in Christian County, Illinois on August 30, 2012. In addition, the City of Taylorville
has a city ordinance restricting the use of potable water within commercial city limits. Discussions with
Site O&M personnel indicate no issues or problems have arisen with respect to enforcing the
restrictive covenants for the Site. A LTS Plan was developed and approved by Illinois EPA on April 12,
2023, to help ensure that Site ICs continue to be monitored and maintained.
After 30 years of operation, the P&T system has been successful in achieving a continued decrease in
the concentration and extent of contamination in groundwater. However, due to remaining residual
contamination at the Site, groundwater modeling indicates it will take more than 100 years to meet
cleanup levels for identified COCs utilizing P&T as the remedial method. Therefore, the Illinois EPA and
Ameren are currently considering remedial alternatives to complete cleanup of the Site to achieve
RAOs within a reasonable amount of time. In July 2023, the Illinois EPA released a Proposed Plan to the
public outlining six different remedial technologies that were evaluated in the FFS. Illinois EPA's current
preferred remedial alternative, pending public comment, is ISS (Illinois EPA, 2023). The ISS pilot study
activities, including the abandonment of certain monitoring wells, and was approved by the Illinois EPA
in a letter dated June 21, 2023.
Groundwater monitoring demonstrates no COCs have migrated off-Site or out of the P&T system
capture zone in the meantime.
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels, and remedial action
objectives (RAOs) used at the time of the remedy selection still valid?
18
-------
Question B Summary:
Yes. There have been no major changes in the physical conditions of the Site affecting the
protectiveness of the remedy. Although the ISS Pilot study did excavate a section of the remedy, air
monitoring practices were followed and no exceedances in the ambient air were noted. Vapor
intrusion was not a concern, because there were no buildings on the Site in the area containing
contaminated groundwater. The Site is being used as anticipated, (i.e., it is not being used) so the
exposure assumptions made do not need to be changed.
Changes in Standards and TBCs
Standards have been updated since the ROD and ESD were signed. Although there are no current
completed exposure pathways to the community (including groundwater, vapor intrusion),
groundwater remediation cleanup levels will be updated in a possible proposed ROD amendment by
IEPA (see below for updates).
Cleanup Levels
Groundwater COCs
mg/L
Benz(a)anthracene
0.00013
Benzo(a)pyrene
0.0002
Benzo(b)fluoranthene
0.00018
Benzo(k)fluoranthene
0.00017
Chrysene
0.012
Dibenzo(a,h)anthracene
0.0003
lndeno(l,2,3-c,d)pyrene
0.00043
Naphthalene
0.14
Benzene
0.005
Toluene
1
Ethylbenzene
0.7
Total Xylenes
10
Expected Progress Towards Meeting RAOs
After 30 years of operation, the P&T system has been successful in achieving a continued decrease in
the concentration and extent of impacts in groundwater. Due to remaining residual impacts at the Site,
groundwater modeling indicates it will take more than 100 years to meet performance standards for
identified COCs utilizing P&T as the remedial method. As noted under Question A Summary, additional
remedial alternatives are being considered to address this issue. Groundwater monitoring
demonstrates no COCs have migrated off-Site or out of the P&T system capture zone in the meantime.
QUESTION C: Has any other information come to light that could call into question the protectiveness
of the remedy?
19
-------
No. There is no new information has come to light affecting the protectiveness of the remedy. No
other events have affected the protectiveness of the remedy and there is no other information which
calls into question the protectiveness of the remedy. There are no actual or potential impacts due to
climate change or natural disaster.
VI. ISSUES/RECOMMENDATIONS
Issues and Recommendations Identified in the Five-Year Review:
OU(s):
1/Sitewide
Issue Category: Remedy Performance
Issue: The existing P&T system, while effectively removing most of the
groundwater contamination, would take an estimated 100 years or longer
to meet the Illinois Groundwater Quality Standards.
Recommendation: Evaluate and select alternative remedies that help
achieve groundwater cleanup goals in a timely manner.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
PRP
State
12/30/2025
OTHER FINDINGS
None.
VII. PROTECTIVENESS STATEMENT
Protectiveness Statement(s)
OU1 and Sitewide Protectiveness Statement
Protectiveness
Determination:
Short-term Protective
Protectiveness Statement:
The remedy currently protects human health and the environment because the removal of the
contaminated soil and the Site fence effectively prevent exposure to residual soil
contaminants, and the provision of an alternative water supply and implementation of ICs limit
exposure to contaminated groundwater. Effective ICs in the form of an Illinois UECA restrictive
covenant are in place. However, in order for the remedy to be protective in the long-term, the
following actions need to be taken to ensure protectiveness: Evaluate and select alternative
remedies that help achieve groundwater cleanup goals in a timely manner.
20
-------
VIII. NEXT REVIEW
The next FYR report for the Central Illinois Public Service Co. Superfund Site is required five years from
the completion date of this review.
21
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APPENDIX A - REFERENCE LIST
Ameren 2012. Environmental Covenant. Ameren Services Company. August 20, 2012
Barr 2015. Groundwater Modeling Summary Report, Former CIPS MGP Site, Taylorville, Illinois. Barr
Engineering, April 2015.
ERM 2022a: Year 2022 Quarter 2 Groundwater Sampling Results, Former MGP Site - Taylorville
Illinois. Environmental Resources Management, Inc., dated June 9, 2022.
ERM 2022. Long-Term Stewardship Plan - Groundwater Pump & Treat System, Ameren CIPS Site,
Taylorville, Illinois. Environmental Resources Management, Inc., dated November 7, 2022.
ERM 2023. Focused Feasibility Study, Ameren Taylorville MGP Site, Taylorville, Illinois.
Environmental Resources Management, Inc., dated June 28, 2023.
ERM 2024. Fourth Quarter 2023 report for the Taylorville Manufactured Gas Plant (MGP) Site,
Taylorville, Illinois. Environmental Resources Management, Inc., dated January 18, 2024.
Hanson 1995. Ground Water Pump & Treat System, CIPS-Gas Plant Site, Taylorville, Illinois. Hanson
Engineers Incorporated. September 1995.
Ameren 1995. O&M Plan for Pump & Treat System, CIPS-Gas Plant Site, Taylorville, Illinois.
September 1995
Illinois EPA 2005. Explanation of Significant Differences, Ameren CIPS National Priorities List Site.
Illinois Environmental Protection Agency, August 2005.
Illinois EPA 2023. Proposed Plan, Ameren Central Illinois Public Services (CIPS) Site. Illinois
Environmental Protection Agency, June 2023.
Taylorville 2010. City of Taylorville, Ordinance No. 3463, An Ordinance Prohibiting the Use Of
Ground Water As A Potable Water Supply By The Installation Or Use By Potable Water Supply Wells
Or By Any Other Method. City of Taylorville, Illinois, May 3, 2010.
USDC 1994. People of the State of Illinois v Central Illinois Public Service Company, U.S. District
Court for the Central District of Illinois, March 1994. "Consent Decree"
USEPA 1992. Superfund Record of Decision (ROD) - Central Illinois Public Service, IL. U. S.
Environmental Protection Agency, September 1992.
USEPA 1999. First Five-Year Review Report for Central Illinois Public Service Company Site, Christian
County, Illinois. U.S. Environmental Protection Agency, March 1999.
USEPA 2004. Second Five-Year Review Report for Central Illinois Public Service Company Site,
Christian County, Illinois. U.S. Environmental Protection Agency, June 2004.
22
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USEPA 2009. Third Five-Year Review Report for Central Illinois Public Service Company Site, Christian
County, Illinois. U.S. Environmental Protection Agency, June 2009.
USEPA 2014. Fourth Five-Year Review Report for Central Illinois Public Service Company Site,
Christian County, Illinois. U.S. Environmental Protection Agency, June 2014.
USEPA 2019. Fifth Five-Year Review Report for Central Illinois Public Service Co. Superfund Site,
Christian County, Illinois. U.S. Environmental Protection Agency, June 2019.
Ameren 2018. Seaman Estates Pond Study.
23
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APPENDIX B - ADDITIONAL SITE INFORMATION
24
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Ameren
January 18, 2024
Mr. Greggory Miller
Illinois Environmental Protection Agency
1021 North Grand Avenue East
P.O. Box 19276
Springfield, IL 62794-9276
Dear Mr. Miller:
As required by Article IX (A) of the Consent Order (Case #93-3332), this is the Fourth
Quarter, 2023 report for the Taylorville Manufactured Gas Plant (MGP) Site. This report
is a summary of events. Reports and notifications of events are reported in addition to
this summary throughout the quarter.
Fourth Quarter 2023 - Events
Fourth quarter 2023 groundwater samples
attached).
Fourth quarter 2023 pump and treat system
Carbon change on December 8, 2023.
First Quarter - 2024 Plans
Collect First quarter groundwater samples in February.
Abandon extraneous off-site monitoring wells as approved by the Illinois EPA in
April 12, 2023, correspondence.
Problems Encountered or Anticipated Problems
We have not encountered and do not anticipate any other abnormal operational or
maintenance problems.
We have treated 1,360,005,065 gallons of groundwater through the system since startup
until the end of December 2023. There has not been any migration of contamination off-
site.
collected in November 2023 (results
samples (results attached).
1901 Chouteau Avenue
P0 Box 66149
St. Louis, MO 63166-6149 ; Ameren.com
-------
Former MGP - Taylorville, Illinois
Ameren
Page 2 of 3
I certify under penalty of law that the specific Activity and Use Limitations identified in
Paragraph 7 of the Uniform Environmental Covenant for the Ameren Taylorville MGP site
remain in place. I am aware that any person who knowingly makes a false, fictitious, or
fraudulent material statement to the Illinois EPA, either orally or in writing, commits a
Class 4 felony. A second or subsequent offense after conviction is a Class 3 felony (415
ILCS 5/44(h) (8)).
Sincerely,
I 8%t
i
Dave Palmer, PG, PMP, EVMP
Manager, Environmental Support & Waste Management
Ameren Services
Attachments
-------
Former MGP - Taylorville, Illinois
Ameren
Page 3 of 3
Attachments
Pumping Summary and Treatment Plant Results (October - December)
Monitoring Well Location Map
Year 2023 Quarter 4 Groundwater Sampling Results
-------
MGP Pump & Treat System Summary
Taylorville, Illinois
October 2023
TE
TOTALIZER
READING
FLOW
Oct-23
1
7,907,782
86,833
2
7,994,615
69,808
3
8,064,423
64,004
4
8,128,427
34,480
5
8,162,907
83,419
6
8,246,326
71,889
7
8,318,215
76,051
8
8,394,266
70,746
9
8,465,012
65,772
10
8,530,784
49,850
11
8,580,634
68,175
12
8,648,809
54,794
13
8,703,603
78,945
14
8,782,548
70,854
15
8,853,402
59,538
16
8,912,940
53,764
17
8,966,704
51,644
18
9,018,348
26,295
19
9,044,643
67,334
20
9,111,977
44,701
21
9,156,678
64,319
22
9,220,997
77,684
23
9,298,681
43,535
24
9,342,216
62,102
25
9,404,318
28,352
26
9,432,670
63,570
27
9,496,240
54,224
28
9,550,464
58,350
29
9,608,814
48,628
30
9,657,442
53,801
31
9,711,243
44,444
Nov-23
9,755,687
EXTRACTION
WELL
Water Level
East West
WEST
NM(1)
46
WEST
NM(1)
46
WEST
NM(1)
58
WEST
NM(1)
58
WEST
NM(1)
58
WEST
NM(1)
44
WEST
NM(1)
52
WEST
NM(1)
48
WEST
NM(1)
48
WEST
NM(1)
50
WEST
NM(1)
50
WEST
NM(1)
50
WEST
NM(1)
48
WEST
NM(1)
50
WEST
NM(1)
50
WEST
NM(1)
52
WEST
NM(1)
52
WEST
NM11'
50
WEST
NM(1)
50
WEST
NM(1)
50
WEST
NM(1)
50
WEST
NM(1)
52
WEST
NM(1)
52
WEST
NM(1)
52
WEST
NM(1)
52
WEST
NM(1)
52
WEST
NM(1)
46
WEST
NM(1)
50
WEST
NM(1)
50
WEST
NM(1)
50
WEST
NM(1)
50
Flow Data
For Month
To Pond
Below Pond
Average
Maximum
Minimum
Total Through Sept
Total Through Oct
Gallons
1,847,905
1,847,905
59,610
86,833
26,295
1,355,172,152
1,357,020,057
Maintenance Summary
Well Cleaning
Vessel
Carbon Change
Cleaned Effluent Backwash Storage
Back Washed Vessels
Changed Bag Filters
Drum Disposal
NOTES:
None
North
South
None
None
None
None
None
None
North
Middle
South
Inoperable
10/5/2023
10/5/2023
Inoperable
10/12/2023
10/12/2023
Inoperable
10/19/2023
10/19/2023
Inoperable
10/26/2023
10/26/2023
10/13/2023
NM = Not measured
(1) Not measured ฆ
RW abandoned
1/10/2024 11:18 AM
Revised CIPS Pumping Summary 2023 (1)
1
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Influent
Ameren CIPS Manufactured Gas Plant
Taylorville, Illinois
October 2023
Parameter Units 30 DavAvg Limit Daily Max GW Cleanup Goals
Lab pH
-
-
Iron, Dissolved
mg/L
-
Iron, Total
mg/L
-
Acenaphthene
mg/L
0.42
Acenaphthylene
mg/L
-
Anthracene
mg/L
2.1
Benzo(a)anthracene
mg/L
0.00013
Benzo(a)pyrene
mg/L
0.00023
Benzo(b)fluoranthene
mg/L
-
Benzo(g,h,i)perylene
mg/L
-
Benzo(k)fluoranthene
mg/L
-
Chrysene
mg/L
-
Dibenzo(a,h)anthracene
mg/L
-
Fluoranthene
mg/L
0.28
Fluorene
mg/L
-
lndeno(l,2,3-cd)pyrene
mg/L
-
m,p-Cresol
mg/L
0.35
o-Cresol
mg/L
0.35
Phenanthrene
mg/L
-
Pyrene
mg/L
-
Total PNAs except Naphthalene
mg/L
-
Benzene
Hg/L
5
Ethylbenzene
Hg/L
700
m,p-Xylenes
Hg/L
-
Naphthalene
Hg/L
25
o-Xylene
Hg/L
-
Toluene
Hg/L
1000
Xylenes, Total
Hg/L
10000
ND=Not detected above the project acceptable detection limit
J = Estimated concentration
BOLD text indicates exceedance of the groundwater quality standarc
B = Analyte present in method blank
H = Holding times exceeded
10/4/2023
10/11/2023
10/18/2023
10/25/2023
Average
Maximum
6.92
H
7.04
H
6.97
H
6.92
H
6.96
7.04
0.3110
0.0230
J
0.0588
0.0762
0.1173
0.3110
4.60
1.78
1.85
1.79
2.51
4.60
0.0186
0.0138
0.013
0.0132
0.0147
0.0186
0.00402
0.00505
0.00274
0.00234
0.00354
0.00505
0.00427
0.00309
0.00389
0.00379
0.00376
0.00427
0.000428
0.000227
0.000289
B
0.000276
0.000305
0.000428
0.000204
ND
0.00012
J
ND
0.000204
0.000204
0.000153
0.000071
J
0.000126
B
0.00008
J
0.000108
0.000153
0.00013
J
ND
ND
ND
0.00013
0.00013
0.000054
J
ND
ND
ND
0.000054
0.000054
0.000394
0.00021
0.000277
B
0.000248
0.000282
0.000394
ND
ND
ND
ND
ND
ND
0.00343
0.00265
0.00332
0.00312
0.00313
0.00343
0.01180
0.00717
B
0.00761
0.00782
B
0.00860
0.01180
ND
ND
ND
ND
ND
ND
ND
0.00130
J
0.00140
J
0.00100
J
0.00123
0.00140
0.0047
J
0.0029
J
0.0038
J
0.0035
J
0.0037
0.0047
0.0191
0.0143
B
0.0137
0.016
0.0158
0.0191
0.00433
0.00314
0.00406
0.00377
0.00383
0.00433
0.0669
0.0498
0.0544
0.0506
0.0554
0.0669
177
176
128
144
156
177
46.9
36.1
33.6
34.8
37.9
46.9
49.3
39
40.1
43.0
42.9
49.3
323
221
216
233
248
323
24.6
20.4
21.4
22.6
22.3
24.6
104
98.4
82.1
92.3
94.2
104
73.9
59.4
61.5
65.6
65.1
73.9
-------
Between Columns
Ameren CI PS Manufactured Gas Plant
Taylorville, Illinois
October 2023
Parameter Units 30 Day Ave Limit Daily Max GW Cleanup Goals
Lab pH
Iron, Dissolved
mg/L
Iron, Total
mg/L
Acenaphthene
mg/L
Acenaphthylene
mg/L
Anthracene
mg/L
Benzo(a)anthracene
mg/L
Benzo(a)pyrene
mg/L
Benzo(b)fluoranthene
mg/L
Benzo(g,h,i)perylene
mg/L
Benzo(k)fluoranthene
mg/L
Chrysene
mg/L
Dibenzo(a,h)anthracene
mg/L
Fluoranthene
mg/L
Fluorene
mg/L
lndeno(l,2,3-cd)pyrene
mg/L
m,p-Cresol
mg/L
o-Cresol
mg/L
Phenanthrene
mg/L
Pyrene
mg/L
Total PNAs except Naphthalene
mg/L
Benzene
Hg/L
Ethylbenzene
Hg/L
m,p-Xylenes
Hg/L
Naphthalene
Hg/L
o-Xylene
|ig/L
Toluene
|ig/L
Xylenes, Total
|ig/L
ND=Not detected above the project acceptable detection limit
J=Analyte detected below quantitation limits
B=Analyte found in the method blank at a concentration
H = Holding times exceeded
10/4/2023
10/11/2023
10/18/2023
10/25/2023
Average
Maximum
6.96
H 6.97
7.01 H
6.92
H
6.97
7.01
H
ND
ND
ND
0.030
J
0.030
0.030
J
ND
0.032
J
0.030 J
0.039
J
0.034
0.039
J
ND
0.000145
ND
0.000268
0.000207
0.000268
ND
ND
ND
0.000117
0.000117
0.000117
ND
ND
ND
ND
ND
ND
ND
ND
ND B
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND B
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND B
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.00015
BJ
ND
0.00013
BJ
0.00014
0.00015
BJ
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
B
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
1.6
2.2
1.3
4.4
2.4
4.4
ND
0.1
J
ND
0.6
J
0.4
0.6
J
ND
0.2
J
ND
0.9
J
0.6
0.9
J
0.6
1.0
ND
4.3
2.0
4.3
ND
0.1
J
ND
0.5
J
0.3
0.5
J
ND
0.4
J
ND
1.5
J
1.0
1.5
J
ND
0.3
J
ND
1.4
0.9
1.4
-------
Effluent
Ameren CI PS Manufactured Gas Plant
Taylorville, Illinois
October 2023
Parameter Units 30 Day Ave Limit Daily Max GW Cleanup Goals
Lab pH
-
-
Iron, Dissolved
mg/L
-
1
Iron, Total
mg/L
2
4
Acenaphthene
mg/L
-
0.0608
Acenaphthylene
mg/L
-
-
Anthracene
mg/L
-
0.0023
Benzo(a)anthracene
mg/L
-
0.001
Benzo(a)pyrene
mg/L
-
0.0005
Benzo(b)fluoranthene
mg/L
-
-
Benzo(g,h,i)perylene
mg/L
-
-
Benzo(k)fluoranthene
mg/L
-
-
Chrysene
mg/L
-
-
Dibenzo(a,h)anthracene
mg/L
-
-
Fluoranthene
mg/L
0.053
0.398
Fluorene
mg/L
-
-
lndeno(l,2,3-cd)pyrene
mg/L
-
-
m,p-Cresol
mg/L
-
1.9
o-Cresol
mg/L
-
1.9
Phenanthrene
mg/L
-
0.01
Pyrene
mg/L
-
-
Total PNAs except Naphthalene
mg/L
-
-
Benzene
Hg/L
-
50
Ethylbenzene
Hg/L
17
216
m,p-Xylenes
Hg/L
-
-
Naphthalene
Hg/L
-
670
o-Xylene
|ig/L
-
-
Toluene
|ig/L
70
750
Xylenes, Total
|ig/L
117
750
ND=Not detected above the project acceptable detection limit
J=Analyte detected below quantitation limits
B=Analyte found in the method blank
H = Holding times exceeded
10/4/2023
10/11/2023
10/18/2023
10/25/2023
Average
Maximum
6.93
H 6.95
H
7.10 H
6.94 H
6.98
7.10
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND B
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND B
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND B
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.00010
BJ
ND
ND B
0.00010
0.00010
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
B
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
-------
Trip Blank
Ameren CIPS Manufactured Gas Plant
Taylorville, Illinois
October 2023
Parameter Units 30 Day Avq Limit Daily Max GW Cleanup Goals
Benzene ng/L - -
Ethylbenzene ng/L - -
m,p-Xylenes ng/L - -
Naphthalene ng/L - -
o-Xylene ng/L - -
Toluene ng/L - -
Xylenes, Total ng/L - -
ND=Not detected above the project acceptable detection limit
J=Analyte detected below quantitation limits
10/5/2023
10/13/2023
10/18/2023
10/25/2023
Averaae
Maximum
ND
ND
ND
ND
ND
ND
ND
0.1 J
ND
ND
0.1
0.1 J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.1 J
ND
ND
0.1
0.1 J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
-------
MGP Pump & Treat System Summary
Taylorville, Illinois
November 2023
DATE
TOTALIZER
READING
FLOW
EXTRACTION
WELL
Water Level
East West
Nov-23
(1)
1
9,755,687
24,025
WEST
NM1 '
50
2
9,779,712
44,650
WEST
NM(1)
50
3
9,824,362
58,728
WEST
NM(1)
50
4
9,883,090
49,165
WEST
NM(1)
50
5
9,932,255
64,225
WEST
NM(1)
50
6
9,996,480
45,556
WEST
NM(1)
50
7
42,037
44,479
WEST
NM(1)
50
8
86,516
37,752
WEST
NM(1)
50
9
124,268
42,626
WEST
NM(1)
52
10
166,894
68,785
WEST
NM(1)
50
11
235,679
74,042
WEST
NM(1)
50
12
309,721
55,271
WEST
NM(1)
50
13
364,992
58,882
WEST
NM(1)
50
14
423,874
41,365
WEST
NM(1)
50
15
465,239
48,028
WEST
NM(1)
52
16
513,267
45,747
WEST
NM(1)
52
17
559,014
61,429
WEST
NM(1)
50
18
620,443
57,125
WEST
NM1"
50
19
677,568
69,733
WEST
NM(1)
50
20
747,301
48,987
WEST
NM(1)
50
21
796,288
29,708
WEST
NM(1)
50
22
825,996
52,031
WEST
NM(1)
50
23
878,027
57,012
WEST
NM(1)
48
24
935,039
55,829
WEST
NM(1)
50
25
990,868
46,751
WEST
NM(1)
48
26
1,037,619
53,334
WEST
NM(1)
50
27
1,090,953
37,742
WEST
NM(1)
50
28
1,128,695
40,395
WEST
NM(1)
50
29
1,169,090
21,012
WEST
NM(1)
50
30
1,190,102
48,565
WEST
NM(1)
50
Dec-23
1,238,667
NM(1)
50
Flow Data
For Month
To Pond
Below Pond
Average
Maximum
Minimum
Total Through Oct
Total Through Nov
Gallons
1,482,979
1,482,979
49,433
74,042
21,012
1,357,020,057
1,358,503,036
Maintenance Summary
Well Cleaning
Vessel
Carbon Change
Cleaned Effluent Backwash Storage
Back Washed Vessels
Changed Bag Filters
Drum Disposal
None
North
South
None
None
None
None
11/9/2023
11/9/2023
North
Middle
South
Inoperable
11/2/2023
11/2/2023
Inoperable
11/9/2023
11/9/2023
Inoperable
11/16/2023
11/16/2023
Inoperable
11/22/2023
11/22/2023
Inoperable
11/30/2023
11/30/2023
Notes:
None
Flow totalizer reset on 11/7/2023
1/10/2024 11:19 AM
Revised CIPS Pumping Summary 2023 (1)
1
-------
Influent
Ameren CI PS Manufactured Gas Plant
Taylorville, Illinois
November 2023
Parameter Units 30 Day Ave Limit Daily Max GW Cleanup Goals 11/1/2023
Lab pH
-
-
6.90
Iron, Dissolved
mg/L
-
ND
Iron, Total
mg/L
-
1.77
Acenaphthene
mg/L
0.42
0.0167
Acenaphthylene
mg/L
-
0.00464
Anthracene
mg/L
2.1
0.00520
Benzo(a)anthracene
mg/L
0.00013
0.000416
Benzo(a)pyrene
mg/L
0.00023
0.00015
Benzo(b)fluoranthene
mg/L
-
0.000133
Benzo(g,h,i)perylene
mg/L
-
ND
Benzo(k)fluoranthene
mg/L
-
ND
Chrysene
mg/L
-
0.000345
Dibenzo(a,h)anthracene
mg/L
-
ND
Fluoranthene
mg/L
0.28
0.00403
Fluorene
mg/L
-
0.0113
lndeno(l,2,3-cd)pyrene
mg/L
-
ND
m,p-Cresol
mg/L
0.35
0.0021
o-Cresol
mg/L
0.35
0.0064
Phenanthrene
mg/L
-
0.0244
Pyrene
mg/L
-
0.00471
Total PNAs except Naphthalene
mg/L
-
0.0720
Benzene
M-g/L
5
161
Ethylbenzene
M-g/L
700
33.1
m,p-Xylenes
M-g/L
-
45.4
Naphthalene
M-g/L
25
298
o-Xylene
M-g/L
-
25.0
Toluene
M-g/L
1000
95.1
Xylenes, Total
M-g/L
10000
70.4
ND=Not detected above the project acceptable detection limit
J = Estimated concentration
BOLD text indicates exceedance of the groundwater quality standard
B = Analyte present in method blank
H = Holding times exceeded
11/8/2023
11/15/2023
11/21/2023
11/29/2023
Average
Maximum
6.94
H 6.95 H
7.09 H
6.93
H
6.96
H
7.09
0.212
0.271
0.501
0.480
0.366
0.480
2.78
1.71
1.44
1.72
1.88
2.78
0.0222
0.0125
0.0167
0.0162
0.0169
0.0222
0.00932
0.00215
0.00450
0.00446
0.00501
0.00932
0.00451
0.00335
0.00473
0.00583
0.00472
0.00583
0.000392
0.000230
0.000351
0.000526
0.000383
0.000526
0.00014
J ND
ND
0.000218
0.000169
J
0.000218
0.000125
ND
0.000093 J
0.000200
0.000138
J
0.000200
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.000064
J
0.000064
J
0.000064
0.000357
0.000185
0.000352
0.000565
0.000361
0.000565
ND
ND
ND
ND
ND
ND
0.00384
0.00274
0.00370
0.00488
0.00383
0.00488
0.0111
0.00840
0.0106
0.00992
0.01009
0.01130
ND
ND
ND
ND
ND
ND
0.0015
J 0.00080 J
0.00091 J
0.00079
J
0.00115
J
0.0021
0.0037
J 0.0038 J
0.0029 J
0.0045
J
0.0042
J
0.0064
0.0254
0.0178
0.0232
0.0239
0.0227
0.0254
0.00446
0.00302
0.00446
0.00542
0.00437
0.00542
0.0819
0.0504
0.0687
0.0766
0.0698
0.0819
200
168
149
149
168
200
41.1
40.6
37.6
24.0
35.3
41.1
49.0
49.8
45.6
41.4
46.4
49.8
312
266
305
252
B
283
B
312
25.9
25.8
22.3
21.6
24.2
25.9
114
100
96.0
77.3
96.7
114
74.9
75.6
67.9
63.0
70.7
75.6
-------
Between Columns
Ameren CIPS Manufactured Gas Plant
Taylorville, Illinois
November 2023
Parameter
Units
30 Dav Ave Limit Dailv Max GW Cleanup Goals 1/1/2023
Lab pH
6.93
Iron, Dissolved
mg/L
ND
Iron, Total
mg/L
0.0408
Acenaphthene
mg/L
0.000265
Acenaphthylene
mg/L
0.000119
Anthracene
mg/L
ND
Benzo(a)anthracene
mg/L
ND
Benzo(a)pyrene
mg/L
ND
Benzo(b)fluoranthene
mg/L
ND
Benzo(g,h,i)perylene
mg/L
ND
Benzo(k)fluoranthene
mg/L
ND
Chrysene
mg/L
ND
Dibenzo(a,h)anthracene
mg/L
ND
Fluoranthene
mg/L
ND
Fluorene
mg/L
0.00017
lndeno(l,2,3-cd)pyrene
mg/L
ND
m,p-Cresol
mg/L
ND
o-Cresol
mg/L
ND
Phenanthrene
mg/L
ND
Pyrene
mg/L
ND
Total PNAs except Naphthalene
mg/L
ND
Benzene
kig/L
2.2
Ethylbenzene
kig/L
0.1
m,p-Xylenes
kig/L
0.3
Naphthalene
kig/L
1.9
o-Xylene
kig/L
0.2
Toluene
kig/L
0.4
Xylenes, Total
kig/L
0.4
ND=Not detected above the project acceptable detection limit
J=Analyte detected below quantitation limits
H = Holding times exceeded
11/8/2023
11/15/2023
11/23/2023
11/29/2023
Average
Maximum
6.95
H 6.93
H 6.94
H 7.09
H 6.98 H
7.09
ND
0.0240
J 0.0571
0.0458
0.0393
0.0571
0.0864
ND
0.0440
0.0360
J 0.0549
0.0864
0.00155
ND
0.000129
ND
0.000648
0.00155
0.000813
ND
ND
ND
0.000466
0.000813
0.000422
ND
ND
ND
0.000422
0.000422
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.000373
ND
ND
ND
0.000373
0.000373
0.000913
ND
ND
ND
0.000542 J
0.000913
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.00214
ND
ND
ND
0.00214
0.00214
0.000378
ND
ND
ND
0.000378
0.000378
0.00659
ND
ND
ND
0.00659
0.00659
15.7
3.6
2.5
2.2
6.0
16
2.1
0.1
J ND
ND
o
oo
2.1
3.8
ND
ND
ND
2.6 J
3.8
23.5
1.1
1.1
ND
8.7
23.5
2.1
0.1
J ND
ND
0.9 J
2.1
6.2
0.3
J ND
ND
2.3 J
6.2
5.9
ND
ND
ND
4.1 J
5.9
-------
Effluent
Ameren CIPS Manufactured Gas Plant
Taylorville, Illinois
November 2023
Parameter Units 30 Day Ave Limit Daily Max GW Cleanup Goals 11/1/2023
Lab pH
-
-
6.91
Iron, Dissolved
mg/L
-
1
ND
Iron, Total
mg/L
2
4
ND
Acenaphthene
mg/L
-
0.0608
ND
Acenaphthylene
mg/L
-
-
ND
Anthracene
mg/L
-
0.0023
ND
Benzo(a)anthracene
mg/L
-
0.001
ND
Benzo(a)pyrene
mg/L
-
0.0005
ND
Benzo(b)fluoranthene
mg/L
-
-
ND
Benzo(g,h,i)perylene
mg/L
-
-
ND
Benzo(k)fluoranthene
mg/L
-
-
ND
Chrysene
mg/L
-
-
ND
Dibenzo(a,h)anthracene
mg/L
-
-
ND
Fluoranthene
mg/L
0.053
0.398
ND
Fluorene
mg/L
-
-
ND
lndeno(l,2,3-cd)pyrene
mg/L
-
-
ND
m,p-Cresol
mg/L
-
1.9
ND
o-Cresol
mg/L
-
1.9
ND
Phenanthrene
mg/L
-
0.01
ND
Pyrene
mg/L
-
-
ND
Total PNAs except Naphthalene
mg/L
-
-
ND
Benzene
Hg/L
-
50
ND
Ethylbenzene
Hg/L
17
216
ND
m,p-Xylenes
Hg/L
-
-
ND
Naphthalene
Hg/L
-
670
ND
o-Xylene
Hg/L
-
-
ND
Toluene
Hg/L
70
750
ND
Xylenes, Total
Hg/L
117
750
ND
ND=Not detected above the project acceptable detection limit
J=Analyte detected below quantitation limits
B=Analyte found in the method blank at a concentration
H = Holding times exceeded
S = Matrix spike outside control limits
11/8/2023
11/15/2023
11/21/2023
11/29/2023
Average
Maximum
6.94
H 6.97 H
6.98
H
6.93 H
6.95
H
6.98
H
ND
ND
ND
0.020 J
0.020
J
0.020
J
ND
ND
ND
ND
ND
ND
ND
ND
ND
S
ND
ND
S
ND
S
ND
ND
ND
S
ND
ND
S
ND
S
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
s
ND
ND
s
ND
s
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND B
ND
B
ND
B
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
-------
Trip Blank
Ameren CIPS Manufactured Gas Plant
Taylorville, Illinois
November 2023
Parameter
Units 30 Dav Ava Limit DailvMax
GW CleanuD Goals 11/1/2023
11/8/2023
11/15/2023
11/21/2023
11/29/2023
Averaae
Maximum
Benzene
Hg/L
ND
ND
ND
ND
ND
ND
ND
Ethylbenzene
Hg/L
ND
ND
ND
ND
ND
ND
ND
m,p-Xylenes
Hg/L
ND
ND
ND
ND
ND
ND
ND
Naphthalene
Hg/L
ND
ND
ND
ND
ND B
ND B
ND B
o-Xylene
Hg/L
ND
ND
ND
ND
ND
ND
ND
Toluene
Hg/L
ND
ND
ND
ND
ND
ND
ND
Xylenes, Total
Hg/L
ND
ND
ND
ND
ND
ND
ND
ND=Not detected above the project acceptable detection limit
-------
MGP Pump & Treat System Summary
Taylorville, Illinois
December 2023
DATE
(1)
TOTALIZER
EXTRACTION
Water Level
Flow Data Gallons
READING
FLOW
WELL
East
West
For Month 1,502,029
-23
To Pond 1,502,029
1
1,238,663
45,342
WEST
NM(1)
50
Below Pond
2
1,284,005
66,681
WEST
NM(1)
50
Average 48,453
3
1,350,686
55,454
WEST
NM(1)
50
Maximum 66,681
4
1,406,140
56,057
WEST
NM(1)
52
Minimum 23,030
5
1,462,197
38,074
WEST
NM(1)
52
Total Through Nov 1,358,503,036
6
1,500,271
51,917
WEST
NM(1)
50
Total Through Dec 1,360,005,065
7
1,552,188
41,620
WEST
NM(1)
50
8
1,593,808
53,605
WEST
NM(1)
50
9
1,647,413
49,506
WEST
NM(1)
50
Maintenance Summarv
10
1,696,919
37,191
WEST
NM(1)
50
11
1,734,110
58,101
WEST
NM(1)
52
Well Cleaning
None
12
1,792,211
37,593
WEST
NM(1)
52
Vessel
North
South
13
1,829,804
35,932
WEST
NM(1)
52
Carbon Change
12/8/2023
None
14
1,865,736
52,698
WEST
NM(1)
52
Cleaned Effluent Backwash Storage
None
None
15
1,918,434
36,112
WEST
NM(1)
50
Back Washed Vessels
12/8/2023
12/19/2023
16
1,954,546
47,608
WEST
NM(1)
50
Changed Bag Filters
North
Middle
South
17
2,002,154
43,577
WEST
NM(1)
50
Inoperable
12/7/2023
12/1/2022
18
2,045,731
45,998
WEST
NM(1)
50
Inoperable
12/14/2023
12/8/2022
19
2,091,729
43,063
WEST
NM(1)
52
Inoperable
12/21/2023
12/15/2022
20
2,134,792
38,545
WEST
NM(1)
52
Inoperable
12/28/2023
12/22/2022
21
2,173,337
65,390
WEST
NM(1)
52
22
2,238,727
63,840
WEST
NM(1)
48
23
2,302,567
45,209
WEST
NM(1)
48
24
2,347,776
40,488
WEST
NM(1)
50
Drum Disposal
None
25
2,388,264
62,970
WEST
NM(1)
50
26
2,451,234
40,736
WEST
NM(1)
52
27
2,491,970
23,030
WEST
NM(1)
52
28
2,515,000
62,557
WEST
NM(1)
52
29
2,577,557
50,276
WEST
NM(1)
48
30
2,627,833
63,428
WEST
NM(1)
48
31
2,691,261
49,431
WEST
NM(1)
50
-24
2,740,692
Not measured
- RW abandoned
50
1/12/2024 7:36 AM
Revised CIPS Pumping Summary 2023
1
-------
Influent
Ameren CI PS Manufactured Gas Plant
Taylorville, Illinois
December 2023
Parameter Units 30 Day Ave Limit Daily Max GW Cleanup Goals
Lab pH
-
-
Iron, Dissolved
mg/L
-
Iron, Total
mg/L
-
Acenaphthene
mg/L
0.42
Acenaphthylene
mg/L
-
Anthracene
mg/L
2.1
Benzo(a)anthracene
mg/L
0.00013
Benzo(a)pyrene
mg/L
0.00023
Benzo(b)fluoranthene
mg/L
-
Benzo(g,h,i)perylene
mg/L
-
Benzo(k)fluoranthene
mg/L
-
Chrysene
mg/L
-
Dibenzo(a,h)anthracene
mg/L
-
Fluoranthene
mg/L
0.28
Fluorene
mg/L
-
lndeno(l,2,3-cd)pyrene
mg/L
-
m,p-Cresol
mg/L
0.35
o-Cresol
mg/L
0.35
Phenanthrene
mg/L
-
Pyrene
mg/L
-
Total PNAs except Naphthalene
mg/L
-
Benzene
Hg/L
5
Ethylbenzene
Hg/L
700
m,p-Xylenes
Hg/L
-
Naphthalene
Hg/L
25
o-Xylene
|ig/L
-
Toluene
|ig/L
1000
Xylenes, Total
|ig/L
10000
J = Estimated concentration
BOLD text indicates exceedance of the groundwater quality standard
B = Analyte present in method blank
H= Holding times exceeded
12/6/2023
12/13/2023
12/20/2023
12/27/2023
Average
Maximum
7.02
H
6.9
H
7.1
H
7.11 H
7.03
7.11
0.265
0.238
0.373
0.232
0.277
0.373
1.72
1.43
1.57
1.50
1.56
1.72
0.0188
0.0142
0.0209
0.0107
0.0162
0.0209
0.00485
0.00310
0.00643
0.00190
0.00407
0.00643
0.00409
0.00497
0.00547
0.00379
0.00458
0.00547
0.000298
0.000368
0.000392
0.000228
0.000322
0.000392
ND
ND
ND
ND
ND
ND
0.000081
J
0.000080
J
0.000108
ND
0.000090
0.000108
ND
ND
ND
ND
ND
ND
ND
ND
0.000059
J
ND
0.000059
0.000059
0.000213
0.000257
0.000307
0.000175
0.000238
0.000307
ND
ND
ND
ND
ND
ND
0.00337
0.00420
0.00437
0.00310
0.00376
0.00437
0.0110
0.0104
0.0122
0.00770
0.0103
0.0122
ND
ND
ND
ND
ND
ND
0.00120
J
ND
ND
ND
0.00120
0.00120
0.0029
J
0.0032
J
ND
0.0017 J
0.0026
0.0032
0.0227
0.0227
0.0272
0.0145
0.0218
0.0272
0.00303
0.00385
0.00550
0.00374
0.00403
0.00550
0.0685
0.0641
0.0830
0.0444
0.0650
0.0830
157
157
135
134
146
157
32.8
25.5
31.3
26.6
29.1
32.8
44.4
40.7
36.1
39.8
40.3
44.4
265
306
235
229
259
306
22.6
21.6
19.0
J
20.9
21.0
22.6
97.5
81.9
83.5
73.7
84.2
97.5
67.0
62.3
55.1
60.7
61.3
67.0
-------
Between Columns
Ameren CIPS Manufactured Gas Plant
Taylorville, Illinois
December 2023
Parameter Units 30 Day Ave Limit Daily Max GW Cleanup Goals
Lab pH
Iron, Dissolved
mg/L
Iron, Total
mg/L
Acenaphthene
mg/L
Acenaphthylene
mg/L
Anthracene
mg/L
Benzo(a)anthracene
mg/L
Benzo(a)pyrene
mg/L
Benzo(b)fluoranthene
mg/L
Benzo(g,h,i)perylene
mg/L
Benzo(k)fluoranthene
mg/L
Chrysene
mg/L
Dibenzo(a,h)anthracene
mg/L
Fluoranthene
mg/L
Fluorene
mg/L
lndeno(l,2,3-cd)pyrene
mg/L
m,p-Cresol
mg/L
o-Cresol
mg/L
Phenanthrene
mg/L
Pyrene
mg/L
Total PNAs except Naphthalene
mg/L
Benzene
Hg/L
Ethylbenzene
Hg/L
m,p-Xylenes
Hg/L
Naphthalene
Hg/L
o-Xylene
Hg/L
Toluene
Mg/L
Xylenes, Total
Hg/L
ND=Not detected above the project acceptable detection limit
J=Analyte detected below quantitation limits
H= Holding times exceeded
12/6/2023
12/13/2023 12/20/2023 12/27/2023 Average
Maximum
6.95
H
6.95
H
7.08
H
7.05
H 7.01
7.08
0.0210
J
0.0429
0.0280
J
ND
0.0306
0.0429
0.0250
J
0.0543
0.0487
0.0370
J 0.0413
0.0543
0.000147
ND
ND
ND
0.000147
0.000147
0.000070
J
ND
ND
ND
0.000070
0.000070
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.00010
J
ND
ND
ND
0.00010
0.00010
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
3.0
ND
0.6
ND
1.8
3.0
0.2
J
ND
ND
ND
0.1
0.2
0.4
J
ND
ND
ND
0.4
0.4
2.0
ND
ND
ND
2.0
2.0
0.2
J
ND
ND
ND
0.2
0.2
0.6
J
ND
ND
ND
0.6
0.6
0.6
J
ND
ND
ND
0.6
0.6
-------
Effluent
Ameren CIPS Manufactured Gas Plant
Taylorville, Illinois
December 2023
Parameter Units 30 Day Ave Limit Daily Max GW Cleanup Goals
Lab pH
-
-
Iron, Dissolved
mg/L
-
1
Iron, Total
mg/L
2
4
Acenaphthene
mg/L
-
0.0608
Acenaphthylene
mg/L
-
-
Anthracene
mg/L
-
0.0023
Benzo(a)anthracene
mg/L
-
0.001
Benzo(a)pyrene
mg/L
-
0.0005
Benzo(b)fluoranthene
mg/L
-
-
Benzo(g,h,i)perylene
mg/L
-
-
Benzo(k)fluoranthene
mg/L
-
-
Chrysene
mg/L
-
-
Dibenzo(a,h)anthracene
mg/L
-
-
Fluoranthene
mg/L
0.053
0.398
Fluorene
mg/L
-
-
lndeno(l,2,3-cd)pyrene
mg/L
-
-
m,p-Cresol
mg/L
-
1.9
o-Cresol
mg/L
-
1.9
Phenanthrene
mg/L
-
0.01
Pyrene
mg/L
-
-
Total PNAs except Naphthalene
mg/L
-
-
Benzene
Hg/L
-
50
Ethylbenzene
Hg/L
17
216
m,p-Xylenes
Hg/L
-
-
Naphthalene
Hg/L
-
670
o-Xylene
Hg/L
-
-
Toluene
Hg/L
70
750
Xylenes, Total
Hg/L
117
750
ND=Not detected above the project acceptable detection limit
J=Analyte detected below quantitation limits
S=Spike recovery outside recovery limits
H= Holding times exceeded
12/6/2023
12/13/2023
12/20/2023
12/27/2023
Average
Maximum
6.99
H 6.86 H
7.05 H
7.05 H
6.99
7.05
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.037 J
0.037
0.037
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND S
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
-------
Trip Blank
Ameren CIPS Manufactured Gas Plant
Taylorville, Illinois
December 2023
Parameter Units 30 Day Ava Limit Daily Max GW Cleanup Goals
Benzene (j.g/L
Ethylbenzene (j.g/L
m,p-Xylenes (j.g/L
Naphthalene (j.g/L
o-Xylene (j.g/L
Toluene (j.g/L
Xylenes, Total (j.g/L
ND=Not detected above the project acceptable detection limit
B = Analyte present in method blank
J = Estimated concentration
12/6/2023 12/13/2023 12/21/2023 12/27/2023
Average Maximum
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
-------
MONITORING WELL LOCATION MAP
FORMER CIPS MGP SITE
917 SOUTH WEBSTER STREET
TAYLORVILLE, ILLINOIS
Environmental Resources Management
CHK'D
BC
0496580
FIGURE 1
Drawn By
GML
CADD Review
FG
Date Drawri/Rev'd
9/27/19 - 1/26/21
ฆ
ERM,
LEGEND
MONITORING WELL
POWER POLES
OVERHEAD POWER LINES
200
-------
I 1968 Craig Roaci Telephone: +1 314.733.4490
I Suite 100 I Fax: +1 314.754.8121
Saint Louis, MO 63148
mvw.errn.com
tlliJM.
16 November 2023
Mr. Dave Palmer
Ameren Services Company
Manager, Environmental Support & Waste Management
Environmental Strategy & Analysis
1901 Chouteau Avenue / MC 602
St. Louis, Missouri 63103
Subject: Year 2023 Quarter 4 Groundwater Sampling Results
Former MGP Site - Taylorville, Illinois
ERM Project No. 0677245
Dear Dave:
Environmental Resources Management Inc. (ERM) appreciates the opportunity to provide
groundwater sampling services at the Ameren former manufactured gas plant (MGP) site in
Taylorville, Illinois (the "Site"). ERM has been performing quarterly groundwater sampling at
the Site for Ameren since the start of remediation activities.
Groundwater sampling activities for the fourth quarter of 2023 occurred from 25 October
through 27 October 2023.
The analytical results from the fourth quarter of groundwater sampling, provided by Teklab,
Inc., are presented in Attachment A. A summary of the quarterly groundwater sampling data
from 2015 to the present for each monitoring well is presented in Attachment B.
The data for the current quarter is generally consistent with what has been observed during
past events, in that the highest level of impacts exceeding applicable Remediation Objectives
(ROs) as defined by the Illinois Environmental Protection Agency (IEPA) are noted primarily
at monitoring well GW-04R. At this location, the benzene concentrations are of the same
order of magnitude to what has been observed historically, while for the second consecutive
sampling event, naphthalene concentrations were observed at an order of magnitude lower
than historically detected. The detected concentrations of both these parameters
concentrations exceed their applicable ROs.
Benzo(a)anthracene was detected at monitoring well GW-07 above its applicable RO. This
finding is consistent with historical groundwater analytical results at this location.
Wells on the downgradient perimeter of the Site, which includes monitoring wells GW-16S,
GW-16D, GW-17, GW-22S, GW-22D, GW-25, and GW-26, did not have any exceedances of
the ROs for the primary Site constituents of concern (COC), with one exception. Bis(2-
ethyhexyl)phthalate was detected above its applicable RO at monitoring well GW-16D. This
finding is largely consistent with historical groundwater analytical results at this location, as
this constituent is intermittently detected at this location.
Consistent with previous sampling events, polynuclear aromatic hydrocarbons (PAHs)
including benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene,
Dibenzo(a,h)anthracene, and indeno(1,2,3-cd)pyrene were detected at concentrations
exceeding the applicable ROs at GW-20. However, volatile organic compounds (VOCs) were
-------
ERM
16 November 2023
Page 2 of 2
not detected at this location above laboratory quantitation limits during this sampling event.
VOCs would be expected to be consistently present in samples from GW-20 if the PAHs
detected were related to the former MGP Site, however VOCs have not historically been
observed at this location.
Groundwater samples were not collected from monitoring wells GW-01, GW-02, and GW-03
during the fourth quarter groundwater sampling event. As discussed in the third quarter 2023
groundwater sampling event report, GW-01 and GW-03 were abandoned by GeoServe Inc,
an Illinois licensed driller, on 5 July through 6 July 2023 for facilitation of the in-situ
stabilization (ISS) pilot study activities at the Site. The ISS pilot study activities, including the
abandonment of these monitoring wells, was approved by the IEPA in a letter dated 21 June
2023.
As with the third quarter 2023 sampling event, GW-02 was unable to be sampled during the
fourth quarter sampling event due to damage to the well casing. The damaged well casing at
GW-02 prevents the gauging and sampling of this monitoring well. ERM recommends that this
monitoring well be abandoned in accordance with Illinois Department of Public Health (IDPH)
and plans to submit a request for approval to abandon the monitoring well to IEPA in the near
future.
ERM appreciates the opportunity to provide groundwater sampling activities at the Taylorville
former MGP Site. Should you have any questions please contact me at (314) 341-7699.
Sincerely,
Michael Abegg, RG (MO)
Senior Consultant
-------
1 1 Hi ill Ml III II , 111' II II II Mil 1 ^ ฆ ฆ I. hi I "23
-------
http://www.teklabinc.com/
November 10, 2023
Michael Abegg
ERM
1968 Craig Road
Suite 100
St. Louis, MO 63146
TEL:
FAX:
Louisiana 05003
Illinois
Oklahoma 9978
Kansas
Louisiana 05002
E-10374
100226
RE: Ameren Taylorville 4th Qtr 2023
WorkOrder: 23102244
Dear Michael Abegg:
TEKLAB, INC received 23 samples on 10/27/2023 1:36:00 PM for the analysis presented in
the following report.
Samples are analyzed on an as received basis unless otherwise requested and documented. The
sample results contained in this report relate only to the requested analytes of interest as
directed on the chain of custody. NELAP accredited fields of testing are indicated by the letters
NELAP under the Certification column. Unless otherwise documented within this report,
Teklab Inc. analyzes samples utilizing the most current methods in compliance with 40CFR.
All tests are performed in the Collinsville, IL laboratory unless otherwise noted in the Case
Narrative.
All quality control criteria applicable to the test methods employed for this project have been
satisfactorily met and are in accordance with NELAP except where noted. The following report
shall not be reproduced, except in full, without the written approval of Teklab, Inc.
If you have any questions regarding these tests results, please feel free to call.
Sincerely,
Elizabeth A. Hurley
Director of Customer Service
(618)344-1004 ex 33
ehurley@teklabinc.com
Page 1 of 52
-------
4 jeMabinc.
Environmental Laboratory
Report Contents
http://www.teklabinc.com/
Work Order: 23102244
Report Date: lO-Nov-23
This reporting package includes the following:
Cover Letter
1
Report Contents
2
Definitions
3
Case Narrative
5
Accreditations
6
Laboratory Results
7
Sample Summary
30
Dates Report
31
Quality Control Results
34
Receiving Check List
52
Chain of Custody
Appended
Client: ERM
Client Project: Ameren Taylorville 4th Qtr 2023
Page 2 of 52
-------
V
Definitions
http://www.teklabinc.com/
Client: ERM
Client Project: Ameren Taylorville 4th Qtr 2023
Work Order: 23102244
Report Date: lO-Nov-23
Abbr Definition
* Analytes on report marked with an asterisk are not NELAP accredited
CCV Continuing calibration verification is a check of a standard to determine the state of calibration of an instrument between recalibration.
CRQL A Client Requested Quantitation Limit is a reporting limit that varies according to customer request. The CRQL may not be less than the MDL.
DF Dilution factor is the dilution performed during analysis only and does not take into account any dilutions made during sample preparation. The
reported result is final and includes all dilution factors.
DNI Did not ignite
DUP Laboratory duplicate is a replicate aliquot prepared under the same laboratory conditions and independently analyzed to obtain a measure of
precision.
ICV Initial calibration verification is a check of a standard to determine the state of calibration of an instrument before sample analysis is initiated.
IDPH IL Dept. of Public Health
LCS Laboratory control sample is a sample matrix, free from the analytes of interest,spiked with verified known amounts of analytes and analyzed exactly
like a sample to establish intra-laboratory or analyst specific precision and bias or to assess the performance of all or a portion of the measurement
system.
LCSD Laboratory control sample duplicate is a replicate laboratory control sample that is prepared and analyzed in order to determine the precision of the
approved test method. The acceptable recovery range is listed in the QC Package (provided upon request).
MBLK Method blank is a sample of a matrix similar to the batch of associated sample (when available) that is free from the analytes of interest and is
processed simultaneously with and under the same conditions as samples through all steps of the analytical procedures, and in which no target
analytes or interferences should present at concentrations that impact the analytical results for sample analyses.
MDL "The method detection limit is defined as the minimum measured concentration of a substance that can be reported with 99% confidence that the
measured concentration is distinguishable from method blank results."
MS Matrix spike is an aliquot of matrix fortified (spiked) with known quantities of specific analytes that is subjected to the entire analytical procedures in
order to determine the effect of the matrix on an approved test method's recovery system. The acceptable recovery range is listed in the QC Package
(provided upon request).
MSD Matrix spike duplicate means a replicate matrix spike that is prepared and analyzed in order to determine the precision of the approved test method.
The acceptable recovery range is listed in the QC Package (provided upon request).
MW Molecular weight
NC Data is not acceptable for compliance purposes
ND Not Detected at the Reporting Limit
NELAP NELAP Accredited
PQL Practical quantitation limit means the lowest level that can be reliably achieved within specified limits of precision and accuracy during routine
laboratory operation conditions.
RL The reporting limit the lowest level that the data is displayed in the final report. The reporting limit may vary according to customer request or sample
dilution. The reporting limit may not be less than the MDL.
RPD Relative percent difference is a calculated difference between two recoveries (ie. MS/MSD). The acceptable recovery limit is listed in the QC
Package (provided upon request).
SPK The spike is a known mass of target analyte added to a blank sample or sub-sample; used to determine recovery deficiency or for other quality
control purposes.
Surr Surrogates are compounds which are similar to the analytes of interest in chemical composition and behavior in the analytical process, but which are
not normally found in environmental samples.
TIC Tentatively identified compound: Analytes tentatively identified in the sample by using a library search. Only results not in the calibration standard
will be reported as tentatively identified compounds. Results for tentatively identified compounds that are not present in the calibration standard, but
are assigned a specific chemical name based upon the library search, are calculated using total peak areas from reconstructed ion chromatograms
and a response factor of one. The nearest Internal Standard is used for the calculation. The results of any TICs must be considered estimated, and
are flagged with a "T". If the estimated result is above the calibration range it is flagged "ET"
TNTC Too numerous to count ( > 200 CFU )
Page 3 of 52
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eMabinc.
1 ErwlronmeriuI Laboratory
Definitions
http://www.teklabinc.com/
Client: ERM
Client Project: Ameren Taylorville 4th Qtr 2023
Work Order: 23102244
Report Date: lO-Nov-23
Qualifiers
# - Unknown hydrocarbon
C - RL shown is a Client Requested Quantitation Limit
H - Holding times exceeded
J - Analyte detected below quantitation limits
ND - Not Detected at the Reporting Limit
S - Spike Recovery outside recovery limits
X - Value exceeds Maximum Contaminant Level
B - Analyte detected in associated Method Blank
E - Value above quantitation range
I - Associated internal standard was outside method criteria
M - Manual Integration used to determine area response
R - RPD outside accepted recovery limits
T - TIC(Tentatively identified compound)
Page 4 of 52
-------
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
Cooler Receipt Temp: 6.2 ฐC
This report was revised on November 10, 2023 per Michael Abegg's request. The reason for the revision is change the
date/time of collection for the Trip Blank to match what is listed on the chain of custody rather than the received
date/time as the "end of trip." Please replace report dated November 6, 2023 with this report. EAH 11/10/23
Collinsville
Locations
Springfield
Address
5445 Horseshoe Lake Road
Address
3920 Pintail Dr
Collinsville. IL 62234-7425
Springfield. IL 62711-9415
Phone
(618)344-1004
Phone
(217) 698-1004
Fax
(618)344-1005
Fax
(217) 698-1005
Email
jhriley<7 teklabinc.com
Email
KKlostermannMteklabinc.com
Collinsville Air
Chicago
Address
5445 Horseshoe Lake Road
Address
1319 Butterfield Rd.
Collinsville. IL 62234-7425
Downers Grove, IL 60515
Phone
(618)344-1004
Phone
(630) 324-6855
Fax
(618)344-1005
Fax
Email
EHurleyMteklabinc.com
Email
arennerMteklabinc.com
Phone
Fax
Email
Kansas City
Address 8421 Nieman Road
Lenexa. KS 66214
(913)541-1998
(913)541-1998
jhrileyMteklabinc.com
Page 5 of 52
-------
eklabjnc. Accreditations
1 Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
State
Dept
Cert #
NELAP
Exp Date
Lab
Illinois
IEPA
100226
NELAP
1/31/2024
Collinsville
Kansas
KDHE
E-10374
NELAP
4/30/2024
Collinsville
Louisiana
LDEQ
05002
NELAP
6/30/2024
Collinsville
Louisiana
LDEQ
05003
NELAP
6/30/2024
Collinsville
Oklahoma
ODEQ
9978
NELAP
8/31/2024
Collinsville
Arkansas
ADEQ
88-0966
3/14/2024
Collinsville
Illinois
IDPH
17584
5/31/2025
Collinsville
Iowa
IDNR
430
6/1/2024
Collinsville
Kentucky
LIST
0073
1/31/2024
Collinsville
Missouri
MDNR
00930
5/31/2023
Collinsville
Missouri
MDNR
930
1/31/2025
Collinsville
http://www.teklabinc.com/
Page 6 of 52
-------
> idkbhinc
Laboratory Results
ฆ riitflrorimarilal Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-001
Client Sample ID: GW-04R-WG-20231027
Matrix: GROUNDWATER
Collection Date: 10/27/2023 10:45
Analyses
Certification MDL RL
Qual
Result
Units
DF
Date Analyzed
Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
1.000700
0.00100
0.0330
mg/L
10
11/03/2023 17:51
214142
Acenaphthylene
NELAP
1.000050
0.000100
0.00163
mg/L
1
11/03/2023 12:04
214142
Anthracene
NELAP
1.000200
0.000300
0.000920
mg/L
1
11/03/2023 12:04
214142
Benzo(a)anthracene
NELAP
1.000070
0.000100
0.000570
mg/L
1
11/03/2023 12:04
214142
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
1
11/03/2023 12:04
214142
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
0.000557
mg/L
1
11/03/2023 12:04
214142
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
1
11/03/2023 12:04
214142
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
0.000116
mg/L
1
11/03/2023 12:04
214142
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
1
11/03/2023 12:04
214142
Chrysene
NELAP
1.000050
0.000100
0.00217
mg/L
1
11/03/2023 12:04
214142
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
1
11/03/2023 12:04
214142
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
1
11/03/2023 12:04
214142
Fluoranthene
NELAP
0.00270
0.00300
0.00893
mg/L
10
11/03/2023 17:51
214142
Fluorene
NELAP
0.00800
0.0200
0.0573
mg/L
100
11/03/2023 17:12
214142
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
1
11/03/2023 12:04
214142
m,p-Cresol
NELAP
0.00059
0.010
J
0.00079
mg/L
1
11/03/2023 12:04
214142
Naphthalene
NELAP
0.0340
0.0400
0.343
mg/L
100
11/03/2023 17:12
214142
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
1
11/03/2023 12:04
214142
Phenanthrene
NELAP
0.0530
0.0600
0.0669
mg/L
100
11/03/2023 17:12
214142
Pyrene
NELAP
1.000180
0.000200
0.00411
mg/L
1
11/03/2023 12:04
214142
Surr: 2,4,6-Tribromophenol
*
0
10-179
92.5
%REC
1
11/03/2023 12:04
214142
Surr: 2-Fluorobiphenyl
*
0
21.4-142
80.6
%REC
1
11/03/2023 12:04
214142
Surr: 2-Fluorophenol
*
0
10-157
75.1
%REC
1
11/03/2023 12:04
214142
Surr: Nitrobenzene-d5
*
0
15-163
90.9
%REC
1
11/03/2023 12:04
214142
Surr: Phenol-d5
*
0
10-162
69.4
%REC
1
11/03/2023 12:04
214142
Surr: p-Terphenyl-d14
*
0
10-173
78.8
%REC
1
11/03/2023 12:04
214142
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.50
5.00
346
Mg/L
10
10/28/2023 6:09
213960
Bromoform
NELAP
0.90
2.00
ND
Mg/L
10
10/28/2023 6:09
213960
Ethylbenzene
NELAP
1.00
10.0
117
Mg/L
10
10/28/2023 6:09
213960
m,p-Xylenes
NELAP
2.20
10.0
14.7
Mg/L
10
10/28/2023 6:09
213960
Methylene chloride
NELAP
8.70
20.0
ND
Mg/L
10
10/28/2023 6:09
213960
Naphthalene
NELAP
5.70
20.0
510
Mg/L
10
10/28/2023 6:09
213960
o-Xylene
NELAP
0.50
10.0
62.0
Mg/L
10
10/28/2023 6:09
213960
Toluene
NELAP
1.00
20.0
24.8
10
10/28/2023 6:09
213960
trans-1,2-Dichloroethene
NELAP
1.00
20.0
ND
Mg/L
10
10/28/2023 6:09
213960
Xylenes, Total
NELAP
2.80
20.0
76.7
Mg/L
10
10/28/2023 6:09
213960
Surr: 1,2-Dichloroethane-d4
*
0
80-120
95.2
%REC
10
10/28/2023 6:09
213960
Surr: 4-Bromofluorobenzene
*
0
80-120
89.3
%REC
10
10/28/2023 6:09
213960
Surr: Dibromofluoromethane
*
0
80-120
105.2
%REC
10
10/28/2023 6:09
213960
Surr: Toluene-d8
*
0
80-120
95.5
%REC
10
10/28/2023 6:09
213960
Elevated reporting limit due to high levels of target and/or non-target analytes.
Page 7 of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-002
Client Sample ID: GW-05-WG-20231025
Matrix: GROUNDWATER
Collection Date: 10/25/2023 13:40
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/01/2023 15:40
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 15:40
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/01/2023 15:40
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/01/2023 15:40
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/01/2023 15:40
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/01/2023 15:40
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/01/2023 15:40
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 15:40
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/01/2023 15:40
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 15:40
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/01/2023 15:40
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/01/2023 15:40
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/01/2023 15:40
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/01/2023 15:40
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/01/2023 15:40
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/01/2023 15:40
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/01/2023 15:40
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/01/2023 15:40
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/01/2023 15:40
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/01/2023 15:40
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
94.8
%REC 1
11/01/2023 15:40
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
76.4
%REC 1
11/01/2023 15:40
214029
Surr: 2-Fluorophenol
*
0
10-157
84.8
%REC 1
11/01/2023 15:40
214029
Surr: Nitrobenzene-d5
*
0
15-163
85.4
%REC 1
11/01/2023 15:40
214029
Surr: Phenol-d5
*
0
10-162
74.7
%REC 1
11/01/2023 15:40
214029
Surr: p-Terphenyl-d14
*
0
10-173
89.2
%REC 1
11/01/2023 15:40
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 6:34
213960
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 6:34
213960
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 6:34
213960
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 6:34
213960
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 6:34
213960
Naphthalene
NELAP
0.57
2.0
J
0.93
|jg/L 1
10/28/2023 6:34
213960
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 6:34
213960
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 6:34
213960
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 6:34
213960
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 6:34
213960
Surr: 1,2-Dichloroethane-d4
*
0
80-120
95.9
%REC 1
10/28/2023 6:34
213960
Surr: 4-Bromofluorobenzene
*
0
80-120
92.4
%REC 1
10/28/2023 6:34
213960
Surr: Dibromofluoromethane
*
0
80-120
104.6
%REC 1
10/28/2023 6:34
213960
Surr: Toluene-d8
*
0
80-120
95.5
%REC 1
10/28/2023 6:34
213960
Page 8 of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-003
Client Sample ID: GW-07-WG-20231027
Matrix: GROUNDWATER
Collection Date: 10/27/2023 8:25
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
0.000158
mg/L 1
11/03/2023 12:43
214142
Acenaphthylene
NELAP
1.000050
0.000100
0.000202
mg/L
11/03/2023 12:43
214142
Anthracene
NELAP
1.000200
0.000300
0.00161
mg/L
11/03/2023 12:43
214142
Benzo(a)anthracene
NELAP
1.000070
0.000100
0.000211
mg/L
11/03/2023 12:43
214142
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/03/2023 12:43
214142
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/03/2023 12:43
214142
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/03/2023 12:43
214142
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/03/2023 12:43
214142
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
0.00271
mg/L
11/03/2023 12:43
214142
Chrysene
NELAP
1.000050
0.000100
0.000184
mg/L
11/03/2023 12:43
214142
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/03/2023 12:43
214142
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/03/2023 12:43
214142
Fluoranthene
NELAP
1.000270
0.000300
0.00122
mg/L
11/03/2023 12:43
214142
Fluorene
NELAP
1.000080
0.000200
0.000393
mg/L
11/03/2023 12:43
214142
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/03/2023 12:43
214142
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/03/2023 12:43
214142
Naphthalene
NELAP
1.000340
0.000400
0.000614
mg/L
11/03/2023 12:43
214142
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/03/2023 12:43
214142
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/03/2023 12:43
214142
Pyrene
NELAP
1.000180
0.000200
0.00265
mg/L 1
11/03/2023 12:43
214142
Surr: 2,4,6-Tribromophenol
*
0
10-179
97.1
%REC 1
11/03/2023 12:43
214142
Surr: 2-Fluorobiphenyl
*
0
21.4-142
69.3
%REC 1
11/03/2023 12:43
214142
Surr: 2-Fluorophenol
*
0
10-157
77.4
%REC 1
11/03/2023 12:43
214142
Surr: Nitrobenzene-d5
*
0
15-163
76.8
%REC 1
11/03/2023 12:43
214142
Surr: Phenol-d5
*
0
10-162
61.7
%REC 1
11/03/2023 12:43
214142
Surr: p-Terphenyl-d14
*
0
10-173
82.3
%REC 1
11/03/2023 12:43
214142
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 6:59
213960
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 6:59
213960
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 6:59
213960
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 6:59
213960
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 6:59
213960
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 6:59
213960
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 6:59
213960
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 6:59
213960
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 6:59
213960
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 6:59
213960
Surr: 1,2-Dichloroethane-d4
*
0
80-120
97.3
%REC 1
10/28/2023 6:59
213960
Surr: 4-Bromofluorobenzene
*
0
80-120
92.6
%REC 1
10/28/2023 6:59
213960
Surr: Dibromofluoromethane
*
0
80-120
106.4
%REC 1
10/28/2023 6:59
213960
Surr: Toluene-d8
*
0
80-120
95.4
%REC 1
10/28/2023 6:59
213960
Page 9 of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-004
Client Sample ID: GW-14-WG-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 17:35
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023 15:29
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 15:29
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023 15:29
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 15:29
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/02/2023 15:29
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 15:29
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 15:29
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 15:29
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
0.00216
mg/L
11/02/2023 15:29
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 15:29
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 15:29
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023 15:29
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/02/2023 15:29
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023 15:29
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/02/2023 15:29
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023 15:29
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023 15:29
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023 15:29
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023 15:29
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/02/2023 15:29
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
102.1
%REC 1
11/02/2023 15:29
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
71.0
%REC 1
11/02/2023 15:29
214029
Surr: 2-Fluorophenol
*
0
10-157
77.2
%REC 1
11/02/2023 15:29
214029
Surr: Nitrobenzene-d5
*
0
15-163
74.9
%REC 1
11/02/2023 15:29
214029
Surr: Phenol-d5
*
0
10-162
61.9
%REC 1
11/02/2023 15:29
214029
Surr: p-Terphenyl-d14
*
0
10-173
86.6
%REC 1
11/02/2023 15:29
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 7:24
213960
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 7:24
213960
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 7:24
213960
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 7:24
213960
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 7:24
213960
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 7:24
213960
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 7:24
213960
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 7:24
213960
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 7:24
213960
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 7:24
213960
Surr: 1,2-Dichloroethane-d4
*
0
80-120
96.1
%REC 1
10/28/2023 7:24
213960
Surr: 4-Bromofluorobenzene
*
0
80-120
92.5
%REC 1
10/28/2023 7:24
213960
Surr: Dibromofluoromethane
*
0
80-120
105.2
%REC 1
10/28/2023 7:24
213960
Surr: Toluene-d8
*
0
80-120
94.8
%REC 1
10/28/2023 7:24
213960
Page lO of 52
-------
i :;-Mab,lDC.
ฆ i:'U ironmental Laboratory
Laboratory Results
http: / / www.teklabinc.com /
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
Lab ID: 23102244-005 Client Sample ID: GW-15-WG-20231027
Matrix: GROUNDWATER Collection Date: 10/27/2023 10:00
Analyses
Certification MDL RL Qual
Result
Units
DF
Date Analyzed
Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
1.000070
0.000100
ND
mg/L
1
11/03/2023 15
16
214142
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
1
11/03/2023 15
16
214142
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
1
11/03/2023 15
16
214142
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
1
11/03/2023 15
16
214142
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
1
11/03/2023 15
16
214142
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
1
11/03/2023 15
16
214142
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
1
11/03/2023 15
16
214142
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
1
11/03/2023 15
16
214142
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200 S
ND
mg/L
1
11/03/2023 15
16
214142
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
1
11/03/2023 15
16
214142
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
1
11/03/2023 15
16
214142
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
1
11/03/2023 15
16
214142
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
1
11/03/2023 15
16
214142
Fluorene
NELAP
1.000080
0.000200
ND
mg/L
1
11/03/2023 15
16
214142
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
1
11/03/2023 15
16
214142
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
1
11/03/2023 15
16
214142
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
1
11/03/2023 15
16
214142
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
1
11/03/2023 15
16
214142
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
1
11/03/2023 15
16
214142
Pyrene
NELAP
1.000180
0.000200
ND
mg/L
1
11/03/2023 15
16
214142
Surr: 2,4,6-Tribromophenol
*
0
10-179
120.4
%REC
1
11/03/2023 15
16
214142
Surr: 2-Fluorobiphenyl
*
0
21.4-142
99.6
%REC
1
11/03/2023 15
16
214142
Surr: 2-Fluorophenol
*
0
10-157
98.4
%REC
1
11/03/2023 15
16
214142
Surr: Nitrobenzene-d5
*
0
15-163
92.8
%REC
1
11/03/2023 15
16
214142
Surr: Phenol-d5
*
0
10-162
86.2
%REC
1
11/03/2023 15
16
214142
Surr: p-Terphenyl-d14
*
0
10-173
115.4
%REC
1
11/03/2023 15
16
214142
Matrix spike did not recover within control limits due to matrix interference.
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
Mg/L
1
10/27/2023 21
58
213946
Bromoform
NELAP
0.09
0.20
ND
Mg/L
1
10/27/2023 21
58
213946
Ethylbenzene
NELAP
0.10
1.00
ND
Mg/L
1
10/27/2023 21
58
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
Mg/L
1
10/27/2023 21
58
213946
Methylene chloride
NELAP
0.87
2.00
ND
Mg/L
1
10/27/2023 21
58
213946
Naphthalene
NELAP
0.57
2.00
ND
Mg/L
1
10/27/2023 21
58
213946
o-Xylene
NELAP
0.05
1.00
ND
Mg/L
1
10/27/2023 21
58
213946
Toluene
NELAP
0.10
2.00
ND
1
10/27/2023 21
58
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
Mg/L
1
10/27/2023 21
58
213946
Xylenes, Total
NELAP
0.28
2.00
ND
Mg/L
1
10/27/2023 21
58
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
99.6
%REC
1
10/27/2023 21
58
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
98.8
%REC
1
10/27/2023 21
58
213946
Surr: Dibromofluoromethane
*
0
80-120
103.7
%REC
1
10/27/2023 21
58
213946
Surr: Toluene-d8
*
0
80-120
103.1
%REC
1
10/27/2023 21
58
213946
Page 11 of52
-------
Laboratory Results
Environmental Laboratory
http: / / www.teklabinc.com /
Client: ERM
Client Project: Ameren Taylorville 4th Qtr 2023
Lab ID: 23102244-006
Matrix: GROUNDWATER
Work Order: 23102244
Report Date: lO-Nov-23
Client Sample ID: GW-16S-WG-20231025
Collection Date: 10/25/2023 16:10
Analyses
Certification MDL RL Qual
Result
Units
DF
Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/01/2023 16
19
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 16
19
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/01/2023 16
19
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/01/2023 16
19
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/01/2023 16
19
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/01/2023 16
19
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/01/2023 16
19
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 16
19
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
0.00426
mg/L
11/01/2023 16
19
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 16
19
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/01/2023 16
19
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/01/2023 16
19
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/01/2023 16
19
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/01/2023 16
19
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/01/2023 16
19
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/01/2023 16
19
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/01/2023 16
19
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/01/2023 16
19
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/01/2023 16
19
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/01/2023 16
19
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
92.7
%REC 1
11/01/2023 16
19
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
80.7
%REC 1
11/01/2023 16
19
214029
Surr: 2-Fluorophenol
*
0
10-157
82.9
%REC 1
11/01/2023 16
19
214029
Surr: Nitrobenzene-d5
*
0
15-163
88.6
%REC 1
11/01/2023 16
19
214029
Surr: Phenol-d5
*
0
10-162
66.6
%REC 1
11/01/2023 16
19
214029
Surr: p-Terphenyl-d14
*
0
10-173
88.8
%REC 1
11/01/2023 16
19
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 7:48
213960
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 7:48
213960
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 7:48
213960
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 7:48
213960
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 7:48
213960
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 7:48
213960
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 7:48
213960
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 7:48
213960
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 7:48
213960
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 7:48
213960
Surr: 1,2-Dichloroethane-d4
*
0
80-120
97.2
%REC 1
10/28/2023 7:48
213960
Surr: 4-Bromofluorobenzene
*
0
80-120
91.2
%REC 1
10/28/2023 7:48
213960
Surr: Dibromofluoromethane
*
0
80-120
105.3
%REC 1
10/28/2023 7:48
213960
Surr: Toluene-d8
*
0
80-120
94.6
%REC 1
10/28/2023 7:48
213960
Page 12 of 52
-------
i :;-Mab,lDC.
ฆ i:'U ironmental Laboratory
Laboratory Results
http: / / www.teklabinc.com /
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
Lab ID: 23102244-007 Client Sample ID: GW-16D-WG-20231025
Matrix: GROUNDWATER Collection Date: 10/25/2023 15:45
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/01/2023 16:58
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 16:58
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/01/2023 16:58
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/01/2023 16:58
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/01/2023 16:58
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/01/2023 16:58
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/01/2023 16:58
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 16:58
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00715
0.00725
0.00726
mg/L
11/02/2023 23:56
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 16:58
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/01/2023 16:58
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/01/2023 16:58
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/01/2023 16:58
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/01/2023 16:58
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/01/2023 16:58
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/01/2023 16:58
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/01/2023 16:58
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/01/2023 16:58
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/01/2023 16:58
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/01/2023 16:58
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
123.3
%REC 1
11/01/2023 16:58
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
79.7
%REC 1
11/01/2023 16:58
214029
Surr: 2-Fluorophenol
*
0
10-157
87.2
%REC 1
11/01/2023 16:58
214029
Surr: Nitrobenzene-d5
*
0
15-163
85.6
%REC 1
11/01/2023 16:58
214029
Surr: Phenol-d5
*
0
10-162
75.1
%REC 1
11/01/2023 16:58
214029
Surr: p-Terphenyl-d14
*
0
10-173
109.1
%REC 1
11/01/2023 16:58
214029
Contamination present in the MBLK forFluorene. Sample results below the reporting limit are reportable per the TNI Standard.
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
0.64
Mg/L 1
10/28/2023 8
13
213960
Bromoform
NELAP
0.09
0.20
ND
Mg/L 1
10/28/2023 8
13
213960
Ethylbenzene
NELAP
0.10
1.00
ND
mq/l 1
10/28/2023 8
13
213960
m,p-Xylenes
NELAP
0.22
1.00
ND
Mg/L 1
10/28/2023 8
13
213960
Methylene chloride
NELAP
0.87
2.00
ND
Mg/L 1
10/28/2023 8
13
213960
Naphthalene
NELAP
0.57
2.00
ND
Mg/L 1
10/28/2023 8
13
213960
o-Xylene
NELAP
0.05
1.00
ND
Mg/L 1
10/28/2023 8
13
213960
Toluene
NELAP
0.10
2.00
ND
Mg/L 1
10/28/2023 8
13
213960
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
Mg/L 1
10/28/2023 8
13
213960
Xylenes, Total
NELAP
0.28
2.00
ND
Mg/L 1
10/28/2023 8
13
213960
Surr: 1,2-Dichloroethane-d4
*
0
80-120
97.1
%REC 1
10/28/2023 8
13
213960
Surr: 4-Bromofluorobenzene
*
0
80-120
93.5
%REC 1
10/28/2023 8
13
213960
Surr: Dibromofluoromethane
*
0
80-120
105.3
%REC 1
10/28/2023 8
13
213960
Surr: Toluene-d8
*
0
80-120
96.1
%REC 1
10/28/2023 8
13
213960
Page 13 of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-008
Client Sample ID: GW-17-WG-20231025
Matrix: GROUNDWATER
Collection Date: 10/25/2023 16:45
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/01/2023 17:38
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 17:38
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/01/2023 17:38
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/01/2023 17:38
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/01/2023 17:38
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/01/2023 17:38
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/01/2023 17:38
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 17:38
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/01/2023 17:38
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/01/2023 17:38
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/01/2023 17:38
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/01/2023 17:38
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/01/2023 17:38
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/01/2023 17:38
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/01/2023 17:38
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/01/2023 17:38
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/01/2023 17:38
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/01/2023 17:38
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/01/2023 17:38
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/01/2023 17:38
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
137.5
%REC 1
11/01/2023 17:38
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
76.5
%REC 1
11/01/2023 17:38
214029
Surr: 2-Fluorophenol
*
0
10-157
89.5
%REC 1
11/01/2023 17:38
214029
Surr: Nitrobenzene-d5
*
0
15-163
80.4
%REC 1
11/01/2023 17:38
214029
Surr: Phenol-d5
*
0
10-162
75.0
%REC 1
11/01/2023 17:38
214029
Surr: p-Terphenyl-d14
*
0
10-173
99.6
%REC 1
11/01/2023 17:38
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 8:38
213960
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 8:38
213960
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 8:38
213960
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 8:38
213960
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 8:38
213960
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 8:38
213960
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 8:38
213960
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 8:38
213960
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 8:38
213960
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 8:38
213960
Surr: 1,2-Dichloroethane-d4
*
0
80-120
97.3
%REC 1
10/28/2023 8:38
213960
Surr: 4-Bromofluorobenzene
*
0
80-120
92.1
%REC 1
10/28/2023 8:38
213960
Surr: Dibromofluoromethane
*
0
80-120
105.2
%REC 1
10/28/2023 8:38
213960
Surr: Toluene-d8
*
0
80-120
95.1
%REC 1
10/28/2023 8:38
213960
Page 14 of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-009
Client Sample ID: GW-18S-WG-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 12:35
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023 16:09
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 16:09
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023 16:09
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 16:09
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/02/2023 16:09
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 16:09
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 16:09
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 16:09
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/02/2023 16:09
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 16:09
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 16:09
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023 16:09
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/02/2023 16:09
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023 16:09
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/02/2023 16:09
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023 16:09
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023 16:09
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023 16:09
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023 16:09
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/02/2023 16:09
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
92.5
%REC 1
11/02/2023 16:09
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
67.0
%REC 1
11/02/2023 16:09
214029
Surr: 2-Fluorophenol
*
0
10-157
76.0
%REC 1
11/02/2023 16:09
214029
Surr: Nitrobenzene-d5
*
0
15-163
75.5
%REC 1
11/02/2023 16:09
214029
Surr: Phenol-d5
*
0
10-162
59.9
%REC 1
11/02/2023 16:09
214029
Surr: p-Terphenyl-d14
*
0
10-173
88.0
%REC 1
11/02/2023 16:09
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 6:20
213939
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 6:20
213939
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 6:20
213939
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 6:20
213939
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 6:20
213939
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 6:20
213939
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 6:20
213939
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 6:20
213939
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 6:20
213939
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 6:20
213939
Surr: 1,2-Dichloroethane-d4
*
0
80-120
109.2
%REC 1
10/28/2023 6:20
213939
Surr: 4-Bromofluorobenzene
*
0
80-120
108.1
%REC 1
10/28/2023 6:20
213939
Surr: Dibromofluoromethane
*
0
80-120
100.5
%REC 1
10/28/2023 6:20
213939
Surr: Toluene-d8
*
0
80-120
102.4
%REC 1
10/28/2023 6:20
213939
Page IS of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-010
Client Sample ID: GW-18D-WG-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 12:05
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023 16:49
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 16:49
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023 16:49
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 16:49
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/02/2023 16:49
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 16:49
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 16:49
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 16:49
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/02/2023 16:49
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 16:49
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 16:49
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023 16:49
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/02/2023 16:49
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023 16:49
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/02/2023 16:49
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023 16:49
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023 16:49
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023 16:49
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023 16:49
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/02/2023 16:49
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
91.8
%REC 1
11/02/2023 16:49
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
74.8
%REC 1
11/02/2023 16:49
214029
Surr: 2-Fluorophenol
*
0
10-157
78.8
%REC 1
11/02/2023 16:49
214029
Surr: Nitrobenzene-d5
*
0
15-163
78.6
%REC 1
11/02/2023 16:49
214029
Surr: Phenol-d5
*
0
10-162
66.1
%REC 1
11/02/2023 16:49
214029
Surr: p-Terphenyl-d14
*
0
10-173
78.9
%REC 1
11/02/2023 16:49
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 6:45
213939
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 6:45
213939
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 6:45
213939
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 6:45
213939
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 6:45
213939
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 6:45
213939
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 6:45
213939
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 6:45
213939
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 6:45
213939
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 6:45
213939
Surr: 1,2-Dichloroethane-d4
*
0
80-120
108.2
%REC 1
10/28/2023 6:45
213939
Surr: 4-Bromofluorobenzene
*
0
80-120
105.7
%REC 1
10/28/2023 6:45
213939
Surr: Dibromofluoromethane
*
0
80-120
101.0
%REC 1
10/28/2023 6:45
213939
Surr: Toluene-d8
*
0
80-120
100.5
%REC 1
10/28/2023 6:45
213939
Page 16 of52
-------
iJKkfchinc
Laboratory Results
ฆ i:'TJir
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-012
Client Sample ID: GW-19D-WG-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 9:15
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023
18:08
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023
18:08
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023
18:08
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023
18:08
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/02/2023
18:08
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023
18:08
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023
18:08
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023
18:08
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/02/2023
18:08
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023
18:08
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023
18:08
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023
18:08
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/02/2023
18:08
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023
18:08
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/02/2023
18:08
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023
18:08
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023
18:08
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023
18:08
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023
18:08
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/02/2023
18:08
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
101.8
%REC 1
11/02/2023
18:08
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
78.9
%REC 1
11/02/2023
18:08
214029
Surr: 2-Fluorophenol
*
0
10-157
78.1
%REC 1
11/02/2023
18:08
214029
Surr: Nitrobenzene-d5
*
0
15-163
82.7
%REC 1
11/02/2023
18:08
214029
Surr: Phenol-d5
*
0
10-162
59.5
%REC 1
11/02/2023
18:08
214029
Surr: p-Terphenyl-d14
*
0
10-173
89.2
%REC 1
11/02/2023
18:08
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
11/01/2023
15:28
214133
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
11/01/2023
15:28
214133
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
11/01/2023
15:28
214133
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
11/01/2023
15:28
214133
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
11/01/2023
15:28
214133
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
11/01/2023
15:28
214133
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
11/01/2023
15:28
214133
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
11/01/2023
15:28
214133
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
11/01/2023
15:28
214133
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
11/01/2023
15:28
214133
Surr: 1,2-Dichloroethane-d4
*
0
80-120
92.9
%REC 1
11/01/2023
15:28
214133
Surr: 4-Bromofluorobenzene
*
0
80-120
89.9
%REC 1
11/01/2023
15:28
214133
Surr: Dibromofluoromethane
*
0
80-120
104.3
%REC 1
11/01/2023
15:28
214133
Surr: Toluene-d8
*
0
80-120
93.5
%REC 1
11/01/2023
15:28
214133
Page 18 of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-013
Client Sample ID: GW-20-WG-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 7:50
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023 19:30
214029
Acenaphthylene
NELAP
1.000050
0.000100
0.000198
mg/L
11/02/2023 19:30
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023 19:30
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
0.000314
mg/L
11/02/2023 19:30
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
0.00111
mg/L
11/02/2023 19:30
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
0.000961
mg/L
11/02/2023 19:30
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
0.00112
mg/L
11/02/2023 19:30
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
0.000288
mg/L
11/02/2023 19:30
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/02/2023 19:30
214029
Chrysene
NELAP
1.000050
0.000100
0.000468
mg/L
11/02/2023 19:30
214029
Dibenzo(a,h)anthracene
NELAP
0.00012
0.00020
J
0.00016
mg/L
11/02/2023 19:30
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023 19:30
214029
Fluoranthene
NELAP
1.000270
0.000300
0.000333
mg/L
11/02/2023 19:30
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023 19:30
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
0.000712
mg/L
11/02/2023 19:30
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023 19:30
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023 19:30
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023 19:30
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023 19:30
214029
Pyrene
NELAP
1.000180
0.000200
0.000534
mg/L 1
11/02/2023 19:30
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
74.4
%REC 1
11/02/2023 19:30
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
73.1
%REC 1
11/02/2023 19:30
214029
Surr: 2-Fluorophenol
*
0
10-157
70.9
%REC 1
11/02/2023 19:30
214029
Surr: Nitrobenzene-d5
*
0
15-163
78.6
%REC 1
11/02/2023 19:30
214029
Surr: Phenol-d5
*
0
10-162
61.3
%REC 1
11/02/2023 19:30
214029
Surr: p-Terphenyl-d14
*
0
10-173
95.1
%REC 1
11/02/2023 19:30
214029
Contamination present in the MBLK for Fluorene.
Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/27/2023 23
15
213946
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/27/2023 23
15
213946
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/27/2023 23
15
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/27/2023 23
15
213946
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/27/2023 23
15
213946
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/27/2023 23
15
213946
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/27/2023 23
15
213946
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/27/2023 23
15
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.0
J
0.52
|jg/L 1
10/27/2023 23
15
213946
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/27/2023 23
15
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
99.6
%REC 1
10/27/2023 23
15
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
100.2
%REC 1
10/27/2023 23
15
213946
Surr: Dibromofluoromethane
*
0
80-120
103.6
%REC 1
10/27/2023 23
15
213946
Surr: Toluene-d8
*
0
80-120
101.9
%REC 1
10/27/2023 23
15
213946
Page 19 of 52
-------
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-014
Client Sample ID: GW-21-WG-20231027
Matrix: GROUNDWATER
Collection Date: 10/27/2023 11:50
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/03/2023 13:21
214142
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/03/2023 13:21
214142
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/03/2023 13:21
214142
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/03/2023 13:21
214142
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/03/2023 13:21
214142
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
0.000143
mg/L
11/03/2023 13:21
214142
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/03/2023 13:21
214142
Benzo(k)fluoranthene
NELAP
1.000050
0.00010
J
0.000056
mg/L
11/03/2023 13:21
214142
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
0.00222
mg/L
11/03/2023 13:21
214142
Chrysene
NELAP
1.000050
0.00010
J
0.000089
mg/L
11/03/2023 13:21
214142
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/03/2023 13:21
214142
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/03/2023 13:21
214142
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/03/2023 13:21
214142
Fluorene
NELAP
1.000080
0.000200
ND
mg/L
11/03/2023 13:21
214142
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/03/2023 13:21
214142
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/03/2023 13:21
214142
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/03/2023 13:21
214142
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/03/2023 13:21
214142
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/03/2023 13:21
214142
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/03/2023 13:21
214142
Surr: 2,4,6-Tribromophenol
*
0
10-179
105.8
%REC 1
11/03/2023 13:21
214142
Surr: 2-Fluorobiphenyl
*
0
21.4-142
77.4
%REC 1
11/03/2023 13:21
214142
Surr: 2-Fluorophenol
*
0
10-157
87.9
%REC 1
11/03/2023 13:21
214142
Surr: Nitrobenzene-d5
*
0
15-163
89.0
%REC 1
11/03/2023 13:21
214142
Surr: Phenol-d5
*
0
10-162
74.9
%REC 1
11/03/2023 13:21
214142
Surr: p-Terphenyl-d14
*
0
10-173
90.7
%REC 1
11/03/2023 13:21
214142
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/27/2023 23:41
213946
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/27/2023 23:41
213946
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/27/2023 23:41
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/27/2023 23:41
213946
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/27/2023 23:41
213946
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/27/2023 23:41
213946
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/27/2023 23:41
213946
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/27/2023 23:41
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/27/2023 23:41
213946
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/27/2023 23:41
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
99.4
%REC 1
10/27/2023 23:41
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
100.4
%REC 1
10/27/2023 23:41
213946
Surr: Dibromofluoromethane
*
0
80-120
103.0
%REC 1
10/27/2023 23:41
213946
Surr: Toluene-d8
*
0
80-120
101.9
%REC 1
10/27/2023 23:41
213946
Page 20 of 52
-------
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-015
Client Sample ID: GW-22S-WG-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 15:40
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023 20:08
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 20:08
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023 20:08
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 20:08
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/02/2023 20:08
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 20:08
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 20:08
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 20:08
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
0.00380
mg/L
11/02/2023 20:08
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 20:08
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 20:08
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023 20:08
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/02/2023 20:08
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023 20:08
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/02/2023 20:08
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023 20:08
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023 20:08
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023 20:08
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023 20:08
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/02/2023 20:08
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
98.1
%REC 1
11/02/2023 20:08
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
90.8
%REC 1
11/02/2023 20:08
214029
Surr: 2-Fluorophenol
*
0
10-157
86.1
%REC 1
11/02/2023 20:08
214029
Surr: Nitrobenzene-d5
*
0
15-163
94.5
%REC 1
11/02/2023 20:08
214029
Surr: Phenol-d5
*
0
10-162
76.7
%REC 1
11/02/2023 20:08
214029
Surr: p-Terphenyl-d14
*
0
10-173
121.1
%REC 1
11/02/2023 20:08
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 0:06
213946
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 0:06
213946
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 0:06
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 0:06
213946
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 0:06
213946
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 0:06
213946
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 0:06
213946
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 0:06
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 0:06
213946
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 0:06
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
100.0
%REC 1
10/28/2023 0:06
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
99.8
%REC 1
10/28/2023 0:06
213946
Surr: Dibromofluoromethane
*
0
80-120
102.6
%REC 1
10/28/2023 0:06
213946
Surr: Toluene-d8
*
0
80-120
102.1
%REC 1
10/28/2023 0:06
213946
Page 21 of 52
-------
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-016
Client Sample ID: GW-22D-WG-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 15:05
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023 20:46
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 20:46
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023 20:46
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 20:46
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/02/2023 20:46
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 20:46
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 20:46
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 20:46
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/02/2023 20:46
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 20:46
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 20:46
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023 20:46
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/02/2023 20:46
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023 20:46
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/02/2023 20:46
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023 20:46
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023 20:46
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023 20:46
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023 20:46
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/02/2023 20:46
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
82.9
%REC 1
11/02/2023 20:46
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
83.8
%REC 1
11/02/2023 20:46
214029
Surr: 2-Fluorophenol
*
0
10-157
75.3
%REC 1
11/02/2023 20:46
214029
Surr: Nitrobenzene-d5
*
0
15-163
86.1
%REC 1
11/02/2023 20:46
214029
Surr: Phenol-d5
*
0
10-162
66.1
%REC 1
11/02/2023 20:46
214029
Surr: p-Terphenyl-d14
*
0
10-173
111.3
%REC 1
11/02/2023 20:46
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 0:32
213946
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 0:32
213946
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 0:32
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 0:32
213946
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 0:32
213946
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 0:32
213946
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 0:32
213946
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 0:32
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 0:32
213946
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 0:32
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
100.2
%REC 1
10/28/2023 0:32
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
99.7
%REC 1
10/28/2023 0:32
213946
Surr: Dibromofluoromethane
*
0
80-120
103.4
%REC 1
10/28/2023 0:32
213946
Surr: Toluene-d8
*
0
80-120
102.6
%REC 1
10/28/2023 0:32
213946
Page 22 of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-017
Client Sample ID: DUP-001-WG-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 0:00
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023 21
24
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 21
24
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023 21
24
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 21
24
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/02/2023 21
24
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 21
24
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 21
24
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 21
24
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/02/2023 21
24
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 21
24
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 21
24
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023 21
24
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/02/2023 21
24
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023 21
24
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/02/2023 21
24
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023 21
24
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023 21
24
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023 21
24
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023 21
24
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/02/2023 21
24
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
88.6
%REC 1
11/02/2023 21
24
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
87.3
%REC 1
11/02/2023 21
24
214029
Surr: 2-Fluorophenol
*
0
10-157
83.0
%REC 1
11/02/2023 21
24
214029
Surr: Nitrobenzene-d5
*
0
15-163
90.7
%REC 1
11/02/2023 21
24
214029
Surr: Phenol-d5
*
0
10-162
75.3
%REC 1
11/02/2023 21
24
214029
Surr: p-Terphenyl-d14
*
0
10-173
116.0
%REC 1
11/02/2023 21
24
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 0:57
213946
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 0:57
213946
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 0:57
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 0:57
213946
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 0:57
213946
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 0:57
213946
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 0:57
213946
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 0:57
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 0:57
213946
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 0:57
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
99.3
%REC 1
10/28/2023 0:57
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
99.3
%REC 1
10/28/2023 0:57
213946
Surr: Dibromofluoromethane
*
0
80-120
102.7
%REC 1
10/28/2023 0:57
213946
Surr: Toluene-d8
*
0
80-120
102.6
%REC 1
10/28/2023 0:57
213946
Page 23 of 52
-------
klSlll lit Laboratory Results
- i:'n ฆ rorimarital Laboratory httP: / /WWW.teklabi nc.com /
Client: ERM
Work Order:
23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date:
10-Nov-23
Lab ID: 23102244-018
Client Sample ID: FB-001-WQ-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 7:50
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023 22:02
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 22:02
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023 22:02
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 22:02
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/02/2023 22:02
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 22:02
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 22:02
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 22:02
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/02/2023 22:02
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 22:02
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 22:02
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023 22:02
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/02/2023 22:02
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023 22:02
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/02/2023 22:02
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023 22:02
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023 22:02
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023 22:02
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023 22:02
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/02/2023 22:02
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
84.5
%REC 1
11/02/2023 22:02
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
84.3
%REC 1
11/02/2023 22:02
214029
Surr: 2-Fluorophenol
*
0
10-157
74.8
%REC 1
11/02/2023 22:02
214029
Surr: Nitrobenzene-d5
*
0
15-163
87.0
%REC 1
11/02/2023 22:02
214029
Surr: Phenol-d5
*
0
10-162
64.6
%REC 1
11/02/2023 22:02
214029
Surr: p-Terphenyl-d14
*
0
10-173
112.5
%REC 1
11/02/2023 22:02
214029
Contamination present in the MBLK forFluorene. Sample results below the reporting limit are reportable per the TNI Standard.
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/27/2023 21
07
213946
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/27/2023 21
07
213946
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/27/2023 21
07
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/27/2023 21
07
213946
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/27/2023 21
07
213946
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/27/2023 21
07
213946
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/27/2023 21
07
213946
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/27/2023 21
07
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/27/2023 21
07
213946
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/27/2023 21
07
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
100.2
%REC 1
10/27/2023 21
07
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
100.4
%REC 1
10/27/2023 21
07
213946
Surr: Dibromofluoromethane
*
0
80-120
103.5
%REC 1
10/27/2023 21
07
213946
Surr: Toluene-d8
*
0
80-120
103.1
%REC 1
10/27/2023 21
07
213946
Page 24 of 52
-------
ekiab.Inc
' Environmental Laboratory
Laboratory Results
http: / / www.teklabinc.com /
Client: ERM
Client Project: Ameren Taylorville 4th Qtr 2023
Lab ID: 23102244-019
Matrix: TRIP BLANK
Work Order: 23102244
Report Date: lO-Nov-23
Client Sample ID: TB-001-WQ-20231025
Collection Date: 10/25/2023 8:00
Analyses
Certification MDL RL Qual
Result
Units
DF
Date Analyzed Batch
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
MQ/L 1
10/27/2023 21
32
213946
Bromoform
NELAP
0.09
0.20
ND
mq/l 1
10/27/2023 21
32
213946
Ethylbenzene
NELAP
0.10
1.00
ND
mq/l 1
10/27/2023 21
32
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
mq/l 1
10/27/2023 21
32
213946
Methylene chloride
NELAP
0.87
2.00
ND
mq/l 1
10/27/2023 21
32
213946
Naphthalene
NELAP
0.57
2.00
ND
MQ/L 1
10/27/2023 21
32
213946
o-Xylene
NELAP
0.05
1.00
ND
MQ/L 1
10/27/2023 21
32
213946
Toluene
NELAP
0.10
2.00
ND
MQ/L 1
10/27/2023 21
32
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
MQ/L 1
10/27/2023 21
32
213946
Xylenes, Total
NELAP
0.28
2.00
ND
MQ/L 1
10/27/2023 21
32
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
100.1
%REC 1
10/27/2023 21
32
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
100.1
%REC 1
10/27/2023 21
32
213946
Surr: Dibromofluoromethane
*
0
80-120
102.2
%REC 1
10/27/2023 21
32
213946
Surr: Toluene-d8
*
0
80-120
103.6
%REC 1
10/27/2023 21
32
213946
Page 25 of 52
-------
klSlll lit Laboratory Results
- i:'n ฆ rorimarital Laboratory httP: / /WWW.teklabi nc.com /
Client: ERM
Work Order:
23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date:
10-Nov-23
Lab ID: 23102244-020
Client Sample ID: FB-002-WQ-20231027
Matrix: GROUNDWATER
Collection Date: 10/27/2023 10:25
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/03/2023 13:59
214142
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/03/2023 13:59
214142
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/03/2023 13:59
214142
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/03/2023 13:59
214142
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/03/2023 13:59
214142
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/03/2023 13:59
214142
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/03/2023 13:59
214142
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/03/2023 13:59
214142
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/03/2023 13:59
214142
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/03/2023 13:59
214142
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/03/2023 13:59
214142
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/03/2023 13:59
214142
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/03/2023 13:59
214142
Fluorene
NELAP
1.000080
0.000200
ND
mg/L
11/03/2023 13:59
214142
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/03/2023 13:59
214142
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/03/2023 13:59
214142
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/03/2023 13:59
214142
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/03/2023 13:59
214142
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/03/2023 13:59
214142
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/03/2023 13:59
214142
Surr: 2,4,6-Tribromophenol
*
0
10-179
109.2
%REC 1
11/03/2023 13:59
214142
Surr: 2-Fluorobiphenyl
*
0
21.4-142
73.7
%REC 1
11/03/2023 13:59
214142
Surr: 2-Fluorophenol
*
0
10-157
73.5
%REC 1
11/03/2023 13:59
214142
Surr: Nitrobenzene-d5
*
0
15-163
72.8
%REC 1
11/03/2023 13:59
214142
Surr: Phenol-d5
*
0
10-162
60.7
%REC 1
11/03/2023 13:59
214142
Surr: p-Terphenyl-d14
*
0
10-173
83.7
%REC 1
11/03/2023 13:59
214142
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 1
22
213946
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 1
22
213946
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 1
22
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 1
22
213946
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 1
22
213946
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 1
22
213946
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 1
22
213946
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 1
22
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 1
22
213946
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 1
22
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
99.2
%REC 1
10/28/2023 1
22
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
99.2
%REC 1
10/28/2023 1
22
213946
Surr: Dibromofluoromethane
*
0
80-120
102.3
%REC 1
10/28/2023 1
22
213946
Surr: Toluene-d8
*
0
80-120
103.2
%REC 1
10/28/2023 1
22
213946
Page 26 of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-021
Client Sample ID: DUP-002-WG-20231027
Matrix: GROUNDWATER
Collection Date: 10/27/2023 0:00
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
0.00350
0.00500
0.0373
mg/L
50
11/06/2023 9:52
214142
Acenaphthylene
NELAP
1.000050
0.000100
0.00183
mg/L
1
11/03/2023 14:38
214142
Anthracene
NELAP
1.000200
0.000300
0.00135
mg/L
1
11/03/2023 14:38
214142
Benzo(a)anthracene
NELAP
1.000070
0.000100
0.000620
mg/L
1
11/03/2023 14:38
214142
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
1
11/03/2023 14:38
214142
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
0.000591
mg/L
1
11/03/2023 14:38
214142
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
1
11/03/2023 14:38
214142
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
0.000139
mg/L
1
11/03/2023 14:38
214142
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
1
11/03/2023 14:38
214142
Chrysene
NELAP
1.000050
0.000100
0.00233
mg/L
1
11/03/2023 14:38
214142
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
1
11/03/2023 14:38
214142
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
1
11/03/2023 14:38
214142
Fluoranthene
NELAP
0.0135
0.0150
ND
mg/L
50
11/06/2023 9:52
214142
Fluorene
NELAP
0.00400
0.0100
0.0802
mg/L
50
11/06/2023 9:52
214142
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
1
11/03/2023 14:38
214142
m,p-Cresol
NELAP
0.00059
0.010
J
0.0010
mg/L
1
11/03/2023 14:38
214142
Naphthalene
NELAP
0.0340
0.0400
0.414
mg/L
100
11/06/2023 13:40
214142
o-Cresol
NELAP
0.00054
0.010
J
0.0010
mg/L
1
11/03/2023 14:38
214142
Phenanthrene
NELAP
0.0265
0.0300
0.0915
mg/L
50
11/06/2023 9:52
214142
Pyrene
NELAP
1.000180
0.000200
0.00465
mg/L
1
11/03/2023 14:38
214142
Surr: 2,4,6-Tribromophenol
*
0
10-179
115.9
%REC
1
11/03/2023 14:38
214142
Surr: 2-Fluorobiphenyl
*
0
21.4-142
88.3
%REC
1
11/03/2023 14:38
214142
Surr: 2-Fluorophenol
*
0
10-157
91.1
%REC
1
11/03/2023 14:38
214142
Surr: Nitrobenzene-d5
*
0
15-163
98.7
%REC
1
11/03/2023 14:38
214142
Surr: Phenol-d5
*
0
10-162
85.7
%REC
1
11/03/2023 14:38
214142
Surr: p-Terphenyl-d14
*
0
10-173
91.6
%REC
1
11/03/2023 14:38
214142
Elevated reporting limit due to high levels of target analytes
5W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.50
5.00
392
Mg/L
10
10/30/2023 11
04
213972
Bromoform
NELAP
0.09
0.20
ND
Mg/L
1
10/28/2023 1
48
213946
Ethylbenzene
NELAP
0.10
1.00
159
Mg/L
1
10/28/2023 1
48
213946
m,p-Xylenes
NELAP
0.22
1.00
19.7
Mg/L
1
10/28/2023 1
48
213946
Methylene chloride
NELAP
0.87
2.00
ND
Mg/L
1
10/28/2023 1
48
213946
Naphthalene
NELAP
5.70
20.0
531
Mg/L
10
10/30/2023 11
04
213972
o-Xylene
NELAP
0.05
1.00
80.8
Mg/L
1
10/28/2023 1
48
213946
Toluene
NELAP
0.10
2.00
34.8
1
10/28/2023 1
48
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
Mg/L
1
10/28/2023 1
48
213946
Xylenes, Total
NELAP
0.28
2.00
101
Mg/L
1
10/28/2023 1
48
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
101.3
%REC
1
10/28/2023 1
48
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
99.5
%REC
1
10/28/2023 1
48
213946
Surr: Dibromofluoromethane
*
0
80-120
104.2
%REC
1
10/28/2023 1
48
213946
Surr: Toluene-d8
*
0
80-120
102.6
%REC
1
10/28/2023 1
48
213946
Page 27 of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-022
Client Sample ID: GW-25-WG-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 13:35
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023 22:40
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 22:40
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023 22:40
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 22:40
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/02/2023 22:40
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 22:40
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 22:40
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 22:40
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/02/2023 22:40
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 22:40
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 22:40
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023 22:40
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/02/2023 22:40
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023 22:40
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/02/2023 22:40
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023 22:40
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023 22:40
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023 22:40
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023 22:40
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/02/2023 22:40
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
76.7
%REC 1
11/02/2023 22:40
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
85.7
%REC 1
11/02/2023 22:40
214029
Surr: 2-Fluorophenol
*
0
10-157
69.5
%REC 1
11/02/2023 22:40
214029
Surr: Nitrobenzene-d5
*
0
15-163
87.8
%REC 1
11/02/2023 22:40
214029
Surr: Phenol-d5
*
0
10-162
62.8
%REC 1
11/02/2023 22:40
214029
Surr: p-Terphenyl-d14
*
0
10-173
112.4
%REC 1
11/02/2023 22:40
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
J
0.16
|jg/L 1
10/28/2023 2
13
213946
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 2
13
213946
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 2
13
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 2
13
213946
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 2
13
213946
Naphthalene
NELAP
0.57
2.00
3.77
|jg/L 1
10/28/2023 2
13
213946
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 2
13
213946
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 2
13
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 2
13
213946
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 2
13
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
97.6
%REC 1
10/28/2023 2
13
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
101.4
%REC 1
10/28/2023 2
13
213946
Surr: Dibromofluoromethane
*
0
80-120
102.9
%REC 1
10/28/2023 2
13
213946
Surr: Toluene-d8
*
0
80-120
102.7
%REC 1
10/28/2023 2
13
213946
Page 28 of 52
-------
> idkbhinc
Laboratory Results
ฆ rcwironmental Laboratory
httD: / / www.teklabinc.com /
Client: ERM
Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Lab ID: 23102244-023
Client Sample ID: GW-26-WG-20231026
Matrix: GROUNDWATER
Collection Date: 10/26/2023 16:25
Analyses Certification MDL RL Qual Result Units DF Date Analyzed Batch
SW-846 3510C.8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Acenaphthene
NELAP
o
o
o
o
-v]
o
0.000100
ND
mg/L 1
11/02/2023 23
18
214029
Acenaphthylene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 23
18
214029
Anthracene
NELAP
1.000200
0.000300
ND
mg/L
11/02/2023 23
18
214029
Benzo(a)anthracene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 23
18
214029
Benzo(a)pyrene
NELAP
1.000110
0.000200
ND
mg/L
11/02/2023 23
18
214029
Benzo(b)fluoranthene
NELAP
1.000070
0.000100
ND
mg/L
11/02/2023 23
18
214029
Benzo(g,h,i)perylene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 23
18
214029
Benzo(k)fluoranthene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 23
18
214029
Bis(2-ethylhexyl)phthalate
NELAP
0.00143
0.00200
ND
mg/L
11/02/2023 23
18
214029
Chrysene
NELAP
1.000050
0.000100
ND
mg/L
11/02/2023 23
18
214029
Dibenzo(a,h)anthracene
NELAP
1.000120
0.000200
ND
mg/L
11/02/2023 23
18
214029
Di-n-butyl phthalate
NELAP
1.000830
0.0100
ND
mg/L
11/02/2023 23
18
214029
Fluoranthene
NELAP
1.000270
0.000300
ND
mg/L
11/02/2023 23
18
214029
Fluorene
NELAP
1.000080
0.000200
B
ND
mg/L
11/02/2023 23
18
214029
lndeno(1,2,3-cd)pyrene
NELAP
1.000160
0.000200
ND
mg/L
11/02/2023 23
18
214029
m,p-Cresol
NELAP
1.000590
0.0100
ND
mg/L
11/02/2023 23
18
214029
Naphthalene
NELAP
1.000340
0.000400
ND
mg/L
11/02/2023 23
18
214029
o-Cresol
NELAP
1.000540
0.0100
ND
mg/L
11/02/2023 23
18
214029
Phenanthrene
NELAP
1.000530
0.000600
ND
mg/L
11/02/2023 23
18
214029
Pyrene
NELAP
1.000180
0.000200
ND
mg/L 1
11/02/2023 23
18
214029
Surr: 2,4,6-Tribromophenol
*
0
10-179
89.4
%REC 1
11/02/2023 23
18
214029
Surr: 2-Fluorobiphenyl
*
0
21.4-142
88.9
%REC 1
11/02/2023 23
18
214029
Surr: 2-Fluorophenol
*
0
10-157
87.9
%REC 1
11/02/2023 23
18
214029
Surr: Nitrobenzene-d5
*
0
15-163
92.0
%REC 1
11/02/2023 23
18
214029
Surr: Phenol-d5
*
0
10-162
73.8
%REC 1
11/02/2023 23
18
214029
Surr: p-Terphenyl-d14
*
0
10-173
115.6
%REC 1
11/02/2023 23
18
214029
Contamination present in the MBLK for Fluorene. Sample results below the reporting limit are reportable per the TNI Standard.
3W-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Benzene
NELAP
0.05
0.50
ND
|jg/L 1
10/28/2023 2:39
213946
Bromoform
NELAP
0.09
0.20
ND
|jg/L 1
10/28/2023 2:39
213946
Ethylbenzene
NELAP
0.10
1.00
ND
|jg/L 1
10/28/2023 2:39
213946
m,p-Xylenes
NELAP
0.22
1.00
ND
|jg/L 1
10/28/2023 2:39
213946
Methylene chloride
NELAP
0.87
2.00
ND
|jg/L 1
10/28/2023 2:39
213946
Naphthalene
NELAP
0.57
2.00
ND
|jg/L 1
10/28/2023 2:39
213946
o-Xylene
NELAP
0.05
1.00
ND
|jg/L 1
10/28/2023 2:39
213946
Toluene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 2:39
213946
trans-1,2-Dichloroethene
NELAP
0.10
2.00
ND
|jg/L 1
10/28/2023 2:39
213946
Xylenes, Total
NELAP
0.28
2.00
ND
|jg/L 1
10/28/2023 2:39
213946
Surr: 1,2-Dichloroethane-d4
*
0
80-120
100.5
%REC 1
10/28/2023 2:39
213946
Surr: 4-Bromofluorobenzene
*
0
80-120
98.3
%REC 1
10/28/2023 2:39
213946
Surr: Dibromofluoromethane
*
0
80-120
103.5
%REC 1
10/28/2023 2:39
213946
Surr: Toluene-d8
*
0
80-120
102.2
%REC 1
10/28/2023 2:39
213946
Page 29 of 52
-------
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
Lab Sample ID
Client Sample ID
Matrix
Fractions
Collection Date
23102244-001
GW-04R-WG-20231027
Groundwater
2
10/27/2023 10:45
23102244-002
GW-05-WG-20231025
Groundwater
2
10/25/2023 13:40
23102244-003
GW-07-WG-20231027
Groundwater
2
10/27/2023 8:25
23102244-004
GW-14-WG-20231026
Groundwater
2
10/26/2023 17:35
23102244-005
GW-15-WG-20231027
Groundwater
2
10/27/2023 10:00
23102244-006
GW-16S-WG-20231025
Groundwater
2
10/25/2023 16:10
23102244-007
GW-16D-WG-20231025
Groundwater
2
10/25/2023 15:45
23102244-008
GW-17-WG-20231025
Groundwater
2
10/25/2023 16:45
23102244-009
GW-18S-WG-20231026
Groundwater
2
10/26/2023 12:35
23102244-010
GW-18D-WG-20231026
Groundwater
2
10/26/2023 12:05
23102244-011
GW-19S-WG-20231026
Groundwater
2
10/26/2023 10:50
23102244-012
GW-19D-WG-20231026
Groundwater
2
10/26/2023 9:15
23102244-013
GW-20-WG-20231026
Groundwater
2
10/26/2023 7:50
23102244-014
GW-21-WG-20231027
Groundwater
2
10/27/2023 11:50
23102244-015
GW-22S-WG-20231026
Groundwater
2
10/26/2023 15:40
23102244-016
GW-22D-WG-20231026
Groundwater
2
10/26/2023 15:05
23102244-017
DUP-001-WG-20231026
Groundwater
2
10/26/2023 0:00
23102244-018
FB-001-WQ-20231026
Groundwater
2
10/26/2023 7:50
23102244-019
TB-00 l-WQ-20231025
Trip Blank
1
10/25/2023 8:00
23102244-020
FB-002-WQ-20231027
Groundwater
2
10/27/2023 10:25
23102244-021
DUP-002-WG-20231027
Groundwater
2
10/27/2023 0:00
23102244-022
GW-25-WG-20231026
Groundwater
2
10/26/2023 13:35
23102244-023
GW-26-WG-20231026
Groundwater
2
10/26/2023 16:25
Page 30 of 52
-------
^ dabjic. Dates Report
ฆ rronmenlal Laboratory http://www.teklabinc.com/
Client:
ERM
Work Order: 23102244
Client Project:
Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Sample II)
Client Sample II) Collection Date
Test iNiime
Received Date
l'rep Date/Time
Analysis Date/Time
23102244-001A
GW-04R-WG-20231027 10/27/2023 10:45
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/02/2023 13:03
11/02/2023 13:03
11/02/2023 13:03
11/03/2023 12:04
11/03/2023 17:12
11/03/2023 17:51
23102244-00IB
GW-04R-WG-20231027 10/27/2023 10:45
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 6:09
23102244-002A
GW-05-WG-20231025 10/25/2023 13:40
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
10/31/2023 18:25
11/01/2023 15:40
23102244-002B
GW-05-WG-20231025 10/25/2023 13:40
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 6:34
23102244-003A
GW-07-WG-20231027 10/27/2023 8:25
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/02/2023 13:03
11/03/2023 12:43
23102244-003B
GW-07-WG-20231027 10/27/2023 8:25
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 6:59
23102244-004A
GW-14-WG-20231026 10/26/2023 17:35
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 15:29
23102244-004B
GW-14-WG-20231026 10/26/2023 17:35
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 7:24
23102244-005A
GW-15-WG-20231027 10/27/2023 10:00
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/02/2023 13:03
11/03/2023 15:16
23102244-005B
GW-15-WG-20231027 10/27/2023 10:00
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/27/2023 21:58
23102244-006A
GW-16S-WG-20231025 10/25/2023 16:10
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
10/31/2023 18:25
11/01/2023 16:19
23102244-006B
GW-16S-WG-20231025 10/25/2023 16:10
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 7:48
23102244-007A
GW-16D-WG-20231025 10/25/2023 15:45
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
10/31/2023 18:25
10/31/2023 18:25
11/01/2023 16:58
11/02/2023 23:56
23102244-007B
GW-16D-WG-20231025 10/25/2023 15:45
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 8:13
23102244-008A
GW-17-WG-20231025 10/25/2023 16:45
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
10/31/2023 18:25
11/01/2023 17:38
23102244-008B
GW-17-WG-20231025 10/25/2023 16:45
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 8:38
Page 31 of 52
-------
^ dabjic. Dates Report
ฆ rronmenlal Laboratory http://www.teklabinc.com/
Client:
Client Project:
ERM
Ameren Taylorville 4th Qtr 2023
Work Order: 23102244
Report Date: lO-Nov-23
Sample II)
Client Sample II) Collection Date
Test iNiime
Received Date
l'rep Date/Time
Analysis Date/Time
23102244-009A
GW-18S-WG-20231026 10/26/2023 12:35
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 16:09
23102244-009B
GW-18S-WG-20231026 10/26/2023 12:35
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 6:20
23102244-010A
GW-18D-WG-20231026 10/26/2023 12:05
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 16:49
23102244-010B
GW-18D-WG-20231026 10/26/2023 12:05
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 6:45
23102244-011A
GW-19S-WG-20231026 10/26/2023 10:50
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 17:28
23102244-01 IB
GW-19S-WG-20231026 10/26/2023 10:50
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 7:11
23102244-012A
GW-19D-WG-20231026 10/26/2023 9:15
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 18:08
23102244-012B
GW-19D-WG-20231026 10/26/2023 9:15
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
11/01/2023 15:28
23102244-013A
GW-20-WG-20231026 10/26/2023 7:50
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 19:30
23102244-013B
GW-20-WG-20231026 10/26/2023 7:50
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/27/2023 23:15
23102244-014A
GW-21 -WG-20231027 10/27/2023 11:50
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/02/2023 13:03
11/03/2023 13:21
23102244-014B
GW-2 l-WG-20231027 10/27/2023 11:50
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/27/2023 23:41
23102244-015A
GW-22S-WG-20231026 10/26/2023 15:40
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 20:08
23102244-015B
GW-22S-WG-20231026 10/26/2023 15:40
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 0:06
23102244-016A
GW-22D-WG-20231026 10/26/2023 15:05
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 20:46
23102244-016B
GW-22D-WG-20231026 10/26/2023 15:05
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 0:32
23102244-017A
DUP-00l-WG-20231026 10/26/2023 0:00
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 21:24
23102244-017B DUP-001-WG-20231026 10/26/2023 0:00 10/27/2023 13:36
Page 32 of 52
-------
Si
ekiabjnc
Environmental Laboratory
Dates Report
http://www.teklabinc.com/
Client:
ERM
Work Order: 23102244
Client Project:
Ameren Taylorville 4th Qtr 2023
Report Date: lO-Nov-23
Sample II)
Client Siiinplo II)
Collection Date
Received Date
Test Name
Prep Date/Time Analysis Date/Time
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/28/2023 0:57
23102244-018A
FB-001-WQ-20231026 10/26/2023 7:50
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 22:02
23102244-018B
FB-001-WQ-20231026 10/26/2023 7:50
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/27/2023 21:07
23102244-019A
TB-001-WQ-20231025 10/25/2023 8:00
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/27/2023 21:32
23102244-020A
FB-002-WQ-20231027 10/27/2023 10:25
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/02/2023 13:03
11/03/2023 13:59
23102244-020B
FB-002-WQ-20231027 10/27/2023 10:25
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 1:22
23102244-021A
DUP-002-WG-20231027 10/27/2023 0:00
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/02/2023 13:03
11/02/2023 13:03
11/02/2023 13:03
11/03/2023 14:38
11/06/2023 9:52
11/06/2023 13:40
23102244-021B
DUP-002-WG-20231027 10/27/2023 0:00
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 1:48
10/30/2023 11:04
23102244-022A
GW-2 5-WG-20231026 10/26/2023 13:35
10/27/2023 13:36
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
11/01/2023 14:59
11/02/2023 22:40
23102244-022B
GW-2 5-WG-20231026 10/26/2023 13:35
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 2:13
23102244-023A GW-26-WG-20231026 10/26/2023 16:25
SW-846 3510C,8270C, Semi-Volatile Organic Compounds
10/27/2023 13:36
11/01/2023 14:59 11/02/2023 23:18
23102244-023B GW-26-WG-20231026 10/26/2023 16:25
SW-846 5030, 8260B, Volatile Organic Compounds by GC/MS
10/27/2023 13:36
10/28/2023 2:39
Page 33 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 3510C,8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Batch 214029 SampType: MBLK Units mg/L
SampID: MBLK-214029
Date
Analyses Cert RL Oual Result
Srnke SPKRefVal %REC
Low Limit High Limit Analyzed
Acenaphthene
0.000100
ND
11/01/2023
Acenaphthylene
0.000100
ND
11/01/2023
Anthracene
0.000300
ND
11/01/2023
Benzo(a)anthracene
0.000100
ND
11/01/2023
Benzo(a)pyrene
0.000200
ND
11/01/2023
Benzo(b)fluoranthene
0.000100
ND
11/01/2023
Benzo(g,h,i)perylene
0.000200
ND
11/01/2023
Benzo(k)fluoranthene
0.000100
ND
11/01/2023
Bis(2-ethylhexyl)phthalate
0.00600
ND
11/01/2023
Chrysene
0.000100
ND
11/01/2023
Dibenzo(a,h)anthracene
0.000200
ND
11/01/2023
Di-n-butyl phthalate
0.0100
ND
11/01/2023
Fluoranthene
0.000300
ND
11/01/2023
Fluorene
0.000200 J
0.000090
11/01/2023
lndeno(1,2,3-cd)pyrene
0.000200
ND
11/01/2023
m,p-Cresol
0.0100
ND
11/01/2023
Naphthalene
0.000400
ND
11/01/2023
o-Cresol
0.0100
ND
11/01/2023
Phenanthrene
0.000600
ND
11/01/2023
Pyrene
0.000200
ND
11/01/2023
Surr: 2,4,6-Tribromophenol
*
0.00167
0.0020
83.6
32.2
135
11/01/2023
Surr: 2-Fluorobiphenyl
*
0.000674
0.0010
67.4
37.3
109
11/01/2023
Surr: 2-Fluorophenol
*
0.00147
0.0020
73.7
34.4
114
11/01/2023
Surr: Nitrobenzene-d5
*
0.000703
0.0010
70.3
43.2
112
11/01/2023
Surr: Phenol-d5
*
0.00123
0.0020
61.4
33.9
101
11/01/2023
Surr: p-Terphenyl-d14
*
0.000773
0.0010
77.3
49.3
140
11/01/2023
Page 34 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 3510C,8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Batch 214029 SampType: LCS Units mg/L
SampID: LCS-214029
Date
Analyses Cert RL Oual Result
Srnke SPKRefVal %REC
Low Limit High Limit Analyzed
Acenaphthene
0.000100
0.00155
0.0020
0
77.5
58.1
103
11/01/2023
Acenaphthylene
0.000100
0.00177
0.0020
0
88.7
59.6
117
11/01/2023
Anthracene
0.000300
0.00158
0.0020
0
79.0
58.4
110
11/01/2023
Benzo(a)anthracene
0.000100
0.00153
0.0020
0
76.4
66.7
112
11/01/2023
Benzo(a)pyrene
0.000200
0.00167
0.0020
0
83.7
69
125
11/01/2023
Benzo(b)fluoranthene
0.000100
0.00165
0.0020
0
82.7
66.1
128
11/01/2023
Benzo(g,h,i)perylene
0.000200
0.00163
0.0020
0
81.7
59.9
128
11/01/2023
Benzo(k)fluoranthene
0.000100
0.00174
0.0020
0
86.8
66.5
116
11/01/2023
Bis(2-ethylhexyl)phthalate
0.00600 J
0.0023
0.0020
0
116.2
51.3
187
11/01/2023
Chrysene
0.000100
0.00165
0.0020
0
82.4
58.8
117
11/01/2023
Dibenzo(a,h)anthracene
0.000200
0.00171
0.0020
0
85.4
60
142
11/01/2023
Di-n-butyl phthalate
0.0100 J
0.0016
0.0020
0
80.0
61.5
128
11/01/2023
Fluoranthene
0.000300
0.00149
0.0020
0
74.5
59.6
120
11/01/2023
Fluorene
0.000200 B
0.00148
0.0020
0
73.8
59.2
109
11/01/2023
lndeno(1,2,3-cd)pyrene
0.000200
0.00176
0.0020
0
88.2
60.7
134
11/01/2023
m,p-Cresol
0.0100
0.0157
0.0200
0
78.3
54
106
11/01/2023
Naphthalene
0.000400
0.00156
0.0020
0
78.0
56.6
98.5
11/01/2023
o-Cresol
0.0100
0.0155
0.0200
0
77.4
54.2
105
11/01/2023
Phenanthrene
0.000600
0.00162
0.0020
0
80.8
61.3
113
11/01/2023
Pyrene
0.000200
0.00146
0.0020
0
72.9
53.7
117
11/01/2023
Surr: 2,4,6-Tribromophenol
*
0.00190
0.0020
95.1
32.2
135
11/01/2023
Surr: 2-Fluorobiphenyl
*
0.000653
0.0010
65.3
37.3
109
11/01/2023
Surr: 2-Fluorophenol
*
0.00142
0.0020
71.0
34.4
114
11/01/2023
Surr: Nitrobenzene-d5
*
0.000734
0.0010
73.4
43.2
112
11/01/2023
Surr: Phenol-d5
*
0.00142
0.0020
70.8
33.9
101
11/01/2023
Surr: p-Terphenyl-d14
*
0.000745
0.0010
74.5
49.3
140
11/01/2023
Page 35 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 3510C,8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Batch 214029 SampType: LCSD Units mg/L
RPD Limit: 40
SampID: LCSD-214029
Date
Analyses Cert RL Oual Result
Srnke SPKRefVal %REC
RPDRefVal %RPD Analyzed
Acenaphthene
0.000100
0.00163
0.0020
0
81.5
0.001551
4.94
11/01/2023
Acenaphthylene
0.000100
0.00189
0.0020
0
94.6
0.001773
6.52
11/01/2023
Anthracene
0.000300
0.00173
0.0020
0
86.3
0.001579
8.84
11/01/2023
Benzo(a)anthracene
0.000100
0.00168
0.0020
0
83.8
0.001529
9.13
11/01/2023
Benzo(a)pyrene
0.000200
0.00178
0.0020
0
88.8
0.001674
5.92
11/01/2023
Benzo(b)fluoranthene
0.000100
0.00179
0.0020
0
89.6
0.001654
8.05
11/01/2023
Benzo(g,h,i)perylene
0.000200
0.00174
0.0020
0
86.9
0.001634
6.18
11/01/2023
Benzo(k)fluoranthene
0.000100
0.00183
0.0020
0
91.5
0.001737
5.26
11/01/2023
Bis(2-ethylhexyl)phthalate
0.00600 J
0.0024
0.0020
0
119.4
0.002324
0.00
11/01/2023
Chrysene
0.000100
0.00184
0.0020
0
91.9
0.001649
10.83
11/01/2023
Dibenzo(a,h)anthracene
0.000200
0.00191
0.0020
0
95.3
0.001708
10.96
11/01/2023
Di-n-butyl phthalate
0.0100 J
0.0018
0.0020
0
88.1
0.001599
0.00
11/01/2023
Fluoranthene
0.000300
0.00163
0.0020
0
81.7
0.001491
9.14
11/01/2023
Fluorene
0.000200 B
0.00156
0.0020
0
78.1
0.001476
5.68
11/01/2023
lndeno(1,2,3-cd)pyrene
0.000200
0.00193
0.0020
0
96.5
0.001764
8.99
11/01/2023
m,p-Cresol
0.0100
0.0179
0.0200
0
89.6
0.01566
13.49
11/01/2023
Naphthalene
0.000400
0.00168
0.0020
0
84.1
0.001560
7.54
11/01/2023
o-Cresol
0.0100
0.0178
0.0200
0
89.0
0.01549
13.94
11/01/2023
Phenanthrene
0.000600
0.00178
0.0020
0
89.2
0.001617
9.87
11/01/2023
Pyrene
0.000200
0.00161
0.0020
0
80.5
0.001457
9.93
11/01/2023
Surr: 2,4,6-Tribromophenol
*
0.00182
0.0020
91.0
11/01/2023
Surr: 2-Fluorobiphenyl
*
0.000788
0.0010
78.8
11/01/2023
Surr: 2-Fluorophenol
*
0.00168
0.0020
83.8
11/01/2023
Surr: Nitrobenzene-d5
*
0.000876
0.0010
87.6
11/01/2023
Surr: Phenol-d5
*
0.00176
0.0020
88.1
11/01/2023
Surr: p-Terphenyl-d14
*
0.000809
0.0010
80.9
11/01/2023
Page 36 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 3510C,8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Batch 214142 SampType: MBLK Units mg/L
SampID: MBLK-214142
Date
Analyses Cert RL Oual Result
Srnke SPKRefVal %REC
Low Limit High Limit Analyzed
Acenaphthene
0.000100
ND
11/03/2023
Acenaphthylene
0.000100
ND
11/03/2023
Anthracene
0.000300
ND
11/03/2023
Benzo(a)anthracene
0.000100
ND
11/03/2023
Benzo(a)pyrene
0.000200
ND
11/03/2023
Benzo(b)fluoranthene
0.000100
ND
11/03/2023
Benzo(g,h,i)perylene
0.000200
ND
11/03/2023
Benzo(k)fluoranthene
0.000100
ND
11/03/2023
Bis(2-ethylhexyl)phthalate
0.00600
ND
11/03/2023
Chrysene
0.000100
ND
11/03/2023
Dibenzo(a,h)anthracene
0.000200
ND
11/03/2023
Di-n-butyl phthalate
0.0100
ND
11/03/2023
Fluoranthene
0.000300
ND
11/03/2023
Fluorene
0.000200
ND
11/03/2023
lndeno(1,2,3-cd)pyrene
0.000200
ND
11/03/2023
m,p-Cresol
0.0100
ND
11/03/2023
Naphthalene
0.000400
ND
11/03/2023
o-Cresol
0.0100
ND
11/03/2023
Phenanthrene
0.000600
ND
11/03/2023
Pyrene
0.000200
ND
11/03/2023
Surr: 2,4,6-Tribromophenol
*
0.00209
0.0020
104.7
32.2
135
11/03/2023
Surr: 2-Fluorobiphenyl
*
0.000753
0.0010
75.3
37.3
109
11/03/2023
Surr: 2-Fluorophenol
*
0.00154
0.0020
77.2
34.4
114
11/03/2023
Surr: Nitrobenzene-d5
*
0.000727
0.0010
72.7
43.2
112
11/03/2023
Surr: Phenol-d5
*
0.00127
0.0020
63.5
33.9
101
11/03/2023
Surr: p-Terphenyl-d14
*
0.000920
0.0010
92.0
49.3
140
11/03/2023
Page 37 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 3510C,8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Batch 214142 SampType: LCS Units mg/L
SampID: LCS-214142
Date
Analyses Cert RL Oual Result
Srnke SPKRefVal %REC
Low Limit High Limit Analyzed
Acenaphthene
0.000100
0.00166
0.0020
0
82.9
58.1
103
11/03/2023
Acenaphthylene
0.000100
0.00187
0.0020
0
93.6
59.6
117
11/03/2023
Anthracene
0.000300
0.00168
0.0020
0
83.9
58.4
110
11/03/2023
Benzo(a)anthracene
0.000100
0.00165
0.0020
0
82.3
66.7
112
11/03/2023
Benzo(a)pyrene
0.000200
0.00176
0.0020
0
88.2
69
125
11/03/2023
Benzo(b)fluoranthene
0.000100
0.00177
0.0020
0
88.6
66.1
128
11/03/2023
Benzo(g,h,i)perylene
0.000200
0.00169
0.0020
0
84.6
59.9
128
11/03/2023
Benzo(k)fluoranthene
0.000100
0.00181
0.0020
0
90.5
66.5
116
11/03/2023
Bis(2-ethylhexyl)phthalate
0.00600 J
0.0025
0.0020
0
123.6
51.3
187
11/03/2023
Chrysene
0.000100
0.00175
0.0020
0
87.3
58.8
117
11/03/2023
Dibenzo(a,h)anthracene
0.000200
0.00182
0.0020
0
91.0
60
142
11/03/2023
Di-n-butyl phthalate
0.0100 J
0.0018
0.0020
0
88.4
61.5
128
11/03/2023
Fluoranthene
0.000300
0.00167
0.0020
0
83.7
59.6
120
11/03/2023
Fluorene
0.000200
0.00156
0.0020
0
78.1
59.2
109
11/03/2023
lndeno(1,2,3-cd)pyrene
0.000200
0.00181
0.0020
0
90.7
60.7
134
11/03/2023
m,p-Cresol
0.0100
0.0178
0.0200
0
88.8
54
106
11/03/2023
Naphthalene
0.000400
0.00165
0.0020
0
82.4
56.6
98.5
11/03/2023
o-Cresol
0.0100
0.0172
0.0200
0
86.1
54.2
105
11/03/2023
Phenanthrene
0.000600
0.00174
0.0020
0
87.2
61.3
113
11/03/2023
Pyrene
0.000200
0.00162
0.0020
0
81.0
53.7
117
11/03/2023
Surr: 2,4,6-Tribromophenol
*
0.00209
0.0020
104.5
32.2
135
11/03/2023
Surr: 2-Fluorobiphenyl
*
0.000824
0.0010
82.4
37.3
109
11/03/2023
Surr: 2-Fluorophenol
*
0.00175
0.0020
87.6
34.4
114
11/03/2023
Surr: Nitrobenzene-d5
*
0.000881
0.0010
88.1
43.2
112
11/03/2023
Surr: Phenol-d5
*
0.00183
0.0020
91.3
33.9
101
11/03/2023
Surr: p-Terphenyl-d14
*
0.000940
0.0010
94.0
49.3
140
11/03/2023
Page 38 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 3510C,8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Batch 214142 SampType: LCSD Units mg/L
RPD Limit: 40
SampID: LCSD-214142
Date
Analyses Cert RL Oual Result
Srnke SPKRefVal %REC
RPDRefVal %RPD Analyzed
Acenaphthene
0.000100
0.00153
0.0020
0
76.3
0.001658
8.32
11/03/2023
Acenaphthylene
0.000100
0.00185
0.0020
0
92.7
0.001872
0.97
11/03/2023
Anthracene
0.000300
0.00158
0.0020
0
79.2
0.001679
5.76
11/03/2023
Benzo(a)anthracene
0.000100
0.00163
0.0020
0
81.4
0.001646
1.17
11/03/2023
Benzo(a)pyrene
0.000200
0.00175
0.0020
0
87.3
0.001764
1.02
11/03/2023
Benzo(b)fluoranthene
0.000100
0.00173
0.0020
0
86.3
0.001772
2.65
11/03/2023
Benzo(g,h,i)perylene
0.000200
0.00169
0.0020
0
84.5
0.001693
0.18
11/03/2023
Benzo(k)fluoranthene
0.000100
0.00181
0.0020
0
90.4
0.001810
0.14
11/03/2023
Bis(2-ethylhexyl)phthalate
0.00600 J
0.0024
0.0020
0
117.8
0.002472
0.00
11/03/2023
Chrysene
0.000100
0.00174
0.0020
0
86.8
0.001746
0.52
11/03/2023
Dibenzo(a,h)anthracene
0.000200
0.00177
0.0020
0
88.7
0.001820
2.54
11/03/2023
Di-n-butyl phthalate
0.0100 J
0.0017
0.0020
0
86.3
0.001767
0.00
11/03/2023
Fluoranthene
0.000300
0.00158
0.0020
0
78.9
0.001675
5.93
11/03/2023
Fluorene
0.000200
0.00159
0.0020
0
79.6
0.001561
1.92
11/03/2023
lndeno(1,2,3-cd)pyrene
0.000200
0.00184
0.0020
0
92.2
0.001814
1.68
11/03/2023
m,p-Cresol
0.0100
0.0145
0.0200
0
72.7
0.01776
19.88
11/03/2023
Naphthalene
0.000400
0.00163
0.0020
0
81.6
0.001648
1.01
11/03/2023
o-Cresol
0.0100
0.0149
0.0200
0
74.5
0.01721
14.38
11/03/2023
Phenanthrene
0.000600
0.00171
0.0020
0
85.7
0.001744
1.78
11/03/2023
Pyrene
0.000200
0.00150
0.0020
0
75.2
0.001619
7.42
11/03/2023
Surr: 2,4,6-Tribromophenol
*
0.00203
0.0020
101.6
11/03/2023
Surr: 2-Fluorobiphenyl
*
0.000794
0.0010
79.4
11/03/2023
Surr: 2-Fluorophenol
*
0.00157
0.0020
78.4
11/03/2023
Surr: Nitrobenzene-d5
*
0.000882
0.0010
88.2
11/03/2023
Surr: Phenol-d5
*
0.00148
0.0020
74.1
11/03/2023
Surr: p-Terphenyl-d14
*
0.000826
0.0010
82.6
11/03/2023
Page 39 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 3510C,8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Batch 214142 SampType: MS Units mg/L
SampID: 23102244-005AMS
Date
Analyses Cert RL Oual Result
Srnke SPKRefVal %REC
Low Limit High Limit Analyzed
Acenaphthene
0.000100
0.00176
0.0020
0
87.8
28.3
133
11/03/2023
Acenaphthylene
0.000100
0.00199
0.0020
0
99.6
5
176
11/03/2023
Anthracene
0.000300
0.00191
0.0020
0
95.7
34.6
131
11/03/2023
Benzo(a)anthracene
0.000100
0.00176
0.0020
0
88.2
40.3
132
11/03/2023
Benzo(a)pyrene
0.000200
0.00195
0.0020
0
97.6
40.8
132
11/03/2023
Benzo(b)fluoranthene
0.000100
0.00190
0.0020
0
94.8
41.9
132
11/03/2023
Benzo(g,h,i)perylene
0.000200
0.00187
0.0020
0
93.4
46
132
11/03/2023
Benzo(k)fluoranthene
0.000100
0.00193
0.0020
0
96.6
49.4
126
11/03/2023
Bis(2-ethylhexyl)phthalate
0.00600 J
0.0024
0.0020
0
120.2
18.4
222
11/03/2023
Chrysene
0.000100
0.00190
0.0020
0
94.9
46.1
129
11/03/2023
Dibenzo(a,h)anthracene
0.000200
0.00209
0.0020
0
104.6
42.1
146
11/03/2023
Di-n-butyl phthalate
0.0100 J
0.0019
0.0020
0
96.8
59.6
146
11/03/2023
Fluoranthene
0.000300
0.00187
0.0020
0
93.3
23.9
164
11/03/2023
Fluorene
0.000200
0.00173
0.0020
0
86.3
24.3
148
11/03/2023
lndeno(1,2,3-cd)pyrene
0.000200
0.00201
0.0020
0
100.3
26.6
157
11/03/2023
m,p-Cresol
0.0100
0.0179
0.0200
0
89.4
5
156
11/03/2023
Naphthalene
0.000400
0.00177
0.0020
0
88.5
24.2
132
11/03/2023
o-Cresol
0.0100
0.0179
0.0200
0
89.3
38
113
11/03/2023
Phenanthrene
0.000600
0.00193
0.0020
0
96.4
36.6
139
11/03/2023
Pyrene
0.000200
0.00186
0.0020
0
93.2
14.6
169
11/03/2023
Surr: 2,4,6-Tribromophenol
*
0.00223
0.0020
111.3
10
179
11/03/2023
Surr: 2-Fluorobiphenyl
*
0.000820
0.0010
82.0
21.4
142
11/03/2023
Surr: 2-Fluorophenol
*
0.00167
0.0020
83.5
10
157
11/03/2023
Surr: Nitrobenzene-d5
*
0.000927
0.0010
92.7
15
163
11/03/2023
Surr: Phenol-d5
*
0.00170
0.0020
85.2
10
162
11/03/2023
Surr: p-Terphenyl-d14
*
0.000973
0.0010
97.3
10
173
11/03/2023
Page 40 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 3510C,8270C, SEMI-VOLATILE ORGANIC COMPOUNDS
Batch 214142 SampType: MSD Units mg/L
RPD Limit: 40
SampID: 23102244-005AMSD
Date
Analyses Cert RL Oual Result
Srnke SPKRefVal %REC
RPDRefVal %RPD Analyzed
Acenaphthene
0.000100
0.00172
0.0020
0
85.8
0.001757
2.37
11/03/2023
Acenaphthylene
0.000100
0.00195
0.0020
0
97.5
0.001992
2.13
11/03/2023
Anthracene
0.000300
0.00176
0.0020
0
88.0
0.001914
8.40
11/03/2023
Benzo(a)anthracene
0.000100
0.00178
0.0020
0
89.1
0.001763
1.09
11/03/2023
Benzo(a)pyrene
0.000200
0.00190
0.0020
0
94.9
0.001952
2.78
11/03/2023
Benzo(b)fluoranthene
0.000100
0.00188
0.0020
0
94.2
0.001895
0.57
11/03/2023
Benzo(g,h,i)perylene
0.000200
0.00184
0.0020
0
91.9
0.001867
1.59
11/03/2023
Benzo(k)fluoranthene
0.000100
0.00184
0.0020
0
92.0
0.001932
4.86
11/03/2023
Bis(2-ethylhexyl)phthalate
0.00600 JS
0.0048
0.0020
0
240.0
0.002404
0.00
11/03/2023
Chrysene
0.000100
0.00188
0.0020
0
93.9
0.001899
1.11
11/03/2023
Dibenzo(a,h)anthracene
0.000200
0.00202
0.0020
0
101.0
0.002093
3.56
11/03/2023
Di-n-butyl phthalate
0.0100 J
0.0018
0.0020
0
91.5
0.001936
0.00
11/03/2023
Fluoranthene
0.000300
0.00174
0.0020
0
87.0
0.001866
6.91
11/03/2023
Fluorene
0.000200
0.00167
0.0020
0
83.4
0.001727
3.49
11/03/2023
lndeno(1,2,3-cd)pyrene
0.000200
0.00194
0.0020
0
96.9
0.002006
3.41
11/03/2023
m,p-Cresol
0.0100
0.0180
0.0200
0
90.1
0.01788
0.83
11/03/2023
Naphthalene
0.000400
0.00172
0.0020
0
86.1
0.001769
2.70
11/03/2023
o-Cresol
0.0100
0.0178
0.0200
0
88.8
0.01787
0.58
11/03/2023
Phenanthrene
0.000600
0.00178
0.0020
0
89.0
0.001928
7.94
11/03/2023
Pyrene
0.000200
0.00175
0.0020
0
87.5
0.001863
6.24
11/03/2023
Surr: 2,4,6-Tribromophenol
*
0.00202
0.0020
101.1
11/03/2023
Surr: 2-Fluorobiphenyl
*
0.000808
0.0010
80.8
11/03/2023
Surr: 2-Fluorophenol
*
0.00174
0.0020
86.8
11/03/2023
Surr: Nitrobenzene-d5
*
0.000862
0.0010
86.2
11/03/2023
Surr: Phenol-d5
*
0.00172
0.0020
85.9
11/03/2023
Surr: p-Terphenyl-d14
*
0.000910
0.0010
91.0
11/03/2023
Page 41 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Batch 213939 SampType: MBLK Units mq/l
SampID: MBLK-AK231027A-2 Date
Analyses Cert RL Oual Result Spike SPKRefVal %REC Low Limit High Limit Analyzed
Benzene
*
0.5
ND
10/27/2023
Bromoform
*
2.0
ND
10/27/2023
Ethylbenzene
*
2.0
ND
10/27/2023
m,p-Xylenes
*
2.0
ND
10/27/2023
Methylene chloride
*
2.0
ND
10/27/2023
Naphthalene
*
5.0
ND
10/27/2023
o-Xylene
*
2.0
ND
10/27/2023
Toluene
*
2.0
ND
10/27/2023
trans-1,2-Dichloroethene
*
2.0
ND
10/27/2023
Xylenes, Total
*
4.0
ND
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
53.3
50.00
106.5
80
120
10/27/2023
Surr: 4-Bromofluorobenzene
*
51.9
50.00
103.9
80
120
10/27/2023
Surr: Dibromofluoromethane
*
49.3
50.00
98.6
80
120
10/27/2023
Surr: Toluene-d8
*
51.4
50.00
102.8
80
120
10/27/2023
Batch 213939 SampType:
LCS
Units [jg/L
SampID: LCS-AK231027A-2
Date
Analyses
Cert
RL Oual Result
Spike SPKRefVal %REC
Low Limit High Limit Analyzed
Benzene
*
0.5
48.5
50.00
0
96.9
80
121
10/27/2023
Bromoform
*
2.0
51.6
50.00
0
103.2
71.6
129
10/27/2023
Ethylbenzene
*
2.0
52.2
50.00
0
104.4
83.1
116
10/27/2023
m,p-Xylenes
*
2.0
105
100.0
0
104.7
83.2
117
10/27/2023
Methylene chloride
*
2.0
50.5
50.00
0
101.0
71.4
124
10/27/2023
Naphthalene
*
5.0
49.0
50.00
0
97.9
71.6
124
10/27/2023
o-Xylene
*
2.0
51.7
50.00
0
103.4
82.3
115
10/27/2023
Toluene
*
2.0
51.3
50.00
0
102.5
82.4
112
10/27/2023
trans-1,2-Dichloroethene
*
2.0
51.9
50.00
0
103.8
80.8
126
10/27/2023
Xylenes, Total
*
4.0
156
150.0
0
104.2
83
116
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
54.9
50.00
109.8
80
120
10/27/2023
Surr: 4-Bromofluorobenzene
*
51.2
50.00
102.5
80
120
10/27/2023
Surr: Dibromofluoromethane
*
51.4
50.00
102.8
80
120
10/27/2023
Surr: Toluene-d8
*
51.8
50.00
103.5
80
120
10/27/2023
Page 42 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Batch 213939 SampType: LCSD Units [jg/L RPD Limit: 20
SampID: LCSD-AK231027A-2 Date
Analyses Cert RL Oual Result Spike SPKRefVal %REC RPDRefVal %RPD Analyzed
Benzene
*
0.5
47.4
50.00
0
94.8
48.47
2.27
10/27/2023
Bromoform
*
2.0
50.6
50.00
0
101.1
51.59
2.04
10/27/2023
Ethylbenzene
*
2.0
50.6
50.00
0
101.1
52.18
3.13
10/27/2023
m,p-Xylenes
*
2.0
101
100.0
0
101.4
104.7
3.22
10/27/2023
Methylene chloride
*
2.0
49.2
50.00
0
98.4
50.51
2.63
10/27/2023
Naphthalene
*
5.0
49.3
50.00
0
98.5
48.96
0.61
10/27/2023
o-Xylene
*
2.0
50.2
50.00
0
100.3
51.69
3.02
10/27/2023
Toluene
*
2.0
49.4
50.00
0
98.7
51.27
3.80
10/27/2023
trans-1,2-Dichloroethene
*
2.0
50.2
50.00
0
100.4
51.92
3.33
10/27/2023
Xylenes, Total
*
4.0
152
150.0
0
101.0
156.4
3.16
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
54.5
50.00
108.9
10/27/2023
Surr: 4-Bromofluorobenzene
*
52.0
50.00
104.0
10/27/2023
Surr: Dibromofluoromethane
*
51.2
50.00
102.4
10/27/2023
Surr: Toluene-d8
*
51.4
50.00
102.7
10/27/2023
Batch 213946 SampType:
MBLK
Units [jg/L
SampID: MBLK-AE231027A-2
Date
Analyses
Cert
RL Oual Result
Spike SPKRefVal %REC
Low Limit High Limit Analyzed
Benzene
*
0.5
ND
10/27/2023
Bromoform
*
2.0
ND
10/27/2023
Ethylbenzene
*
2.0
ND
10/27/2023
m,p-Xylenes
*
2.0
ND
10/27/2023
Methylene chloride
*
2.0
ND
10/27/2023
Naphthalene
*
5.0
ND
10/27/2023
o-Xylene
*
2.0
ND
10/27/2023
Toluene
*
2.0
ND
10/27/2023
trans-1,2-Dichloroethene
*
2.0
ND
10/27/2023
Xylenes, Total
*
4.0
ND
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
49.4
50.00
98.8
80
120
10/27/2023
Surr: 4-Bromofluorobenzene
*
50.5
50.00
100.9
80
120
10/27/2023
Surr: Dibromofluoromethane
*
51.6
50.00
103.2
80
120
10/27/2023
Surr: Toluene-d8
*
51.3
50.00
102.6
80
120
10/27/2023
Page 43 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Batch 213946 SampType: LCS Units Mg/L
SampID: LCS-AE231027A-2 Date
Analyses Cert RL Oual Result Spike SPKRefVal %REC Low Limit High Limit Analyzed
Benzene
*
0.5
56.1
50.00
0
112.2
80
121
10/27/2023
Bromoform
*
2.0
50.6
50.00
0
101.2
71.6
129
10/27/2023
Ethylbenzene
*
2.0
53.6
50.00
0
107.2
83.1
116
10/27/2023
m,p-Xylenes
*
2.0
107
100.0
0
107.5
83.2
117
10/27/2023
Methylene chloride
*
2.0
56.2
50.00
0
112.4
71.4
124
10/27/2023
Naphthalene
*
5.0
51.0
50.00
0
102.1
71.6
124
10/27/2023
o-Xylene
*
2.0
53.8
50.00
0
107.6
82.3
115
10/27/2023
Toluene
*
2.0
53.5
50.00
0
107.0
82.4
112
10/27/2023
trans-1,2-Dichloroethene
*
2.0
58.0
50.00
0
116.0
80.8
126
10/27/2023
Xylenes, Total
*
4.0
161
150.0
0
107.5
83
116
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
49.7
50.00
99.3
80
120
10/27/2023
Surr: 4-Bromofluorobenzene
*
50.1
50.00
100.2
80
120
10/27/2023
Surr: Dibromofluoromethane
*
51.8
50.00
103.6
80
120
10/27/2023
Surr: Toluene-d8
*
50.4
50.00
100.8
80
120
10/27/2023
Batch 213946 SampType:
LCSD
Units [jg/L
RPD Limit: 20
SampID: LCSD-AE231027A-2
Date
Analyses
Cert
RL Oual Result
Spike SPKRefVal %REC
RPDRefVal %RPD Analyzed
Benzene
*
0.5
52.8
50.00
0
105.5
56.12
6.19
10/27/2023
Bromoform
*
2.0
48.2
50.00
0
96.5
50.60
4.78
10/27/2023
Ethylbenzene
*
2.0
50.8
50.00
0
101.6
53.60
5.32
10/27/2023
m,p-Xylenes
*
2.0
102
100.0
0
101.7
107.5
5.51
10/27/2023
Methylene chloride
*
2.0
54.1
50.00
0
108.2
56.19
3.81
10/27/2023
Naphthalene
*
5.0
48.6
50.00
0
97.2
51.03
4.86
10/27/2023
o-Xylene
*
2.0
50.9
50.00
0
101.7
53.82
5.64
10/27/2023
Toluene
*
2.0
51.1
50.00
0
102.2
53.49
4.57
10/27/2023
trans-1,2-Dichloroethene
*
2.0
54.8
50.00
0
109.6
57.98
5.64
10/27/2023
Xylenes, Total
*
4.0
153
150.0
0
101.7
161.3
5.55
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
48.6
50.00
97.3
10/27/2023
Surr: 4-Bromofluorobenzene
*
50.0
50.00
100.0
10/27/2023
Surr: Dibromofluoromethane
*
51.4
50.00
102.7
10/27/2023
Surr: Toluene-d8
*
50.2
50.00
100.5
10/27/2023
Page 44 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Batch 213946 SampType: MS Units Mg/L
SampID: 23102244-005bMS Date
Analyses Cert RL Oual Result Spike SPKRefVal %REC Low Limit High Limit Analyzed
Benzene
0.50
49.5
50.00
0
99.0
73.4
121
10/27/2023
Ethylbenzene
1.00
48.6
50.00
0
97.2
76.2
120
10/27/2023
m,p-Xylenes
1.00
51.7
50.00
0
103.4
82.8
127
10/27/2023
o-Xylene
1.00
49.2
50.00
0
98.4
79.2
116
10/27/2023
Toluene
2.00
49.6
50.00
0
99.2
75
113
10/27/2023
Xylenes, Total
2.00
101
100.0
0
100.9
81.2
121
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
49.3
50.00
98.6
80
120
10/27/2023
Surr: 4-Bromofluorobenzene
*
49.8
50.00
99.5
80
120
10/27/2023
Surr: Dibromofluoromethane
*
51.6
50.00
103.1
80
120
10/27/2023
Surr: Toluene-d8
*
50.7
50.00
101.5
80
120
10/27/2023
Batch 213946 SampType:
MSD
Units [jg/L
RPD Limit: 20
SampID: 23102244-005bMSD
Date
Analyses
Cert
RL Oual Result
Spike SPKRefVal %REC
RPDRefVal %RPD Analyzed
Benzene
0.50
50.5
50.00
0
100.9
49.50
1.94
10/27/2023
Ethylbenzene
1.00
50.4
50.00
0
100.7
48.58
3.58
10/27/2023
m,p-Xylenes
1.00
53.0
50.00
0
106.0
51.71
2.43
10/27/2023
o-Xylene
1.00
50.3
50.00
0
100.5
49.22
2.09
10/27/2023
Toluene
2.00
50.3
50.00
0
100.6
49.61
1.40
10/27/2023
Xylenes, Total
2.00
103
100.0
0
103.2
100.9
2.26
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
49.8
50.00
99.5
10/27/2023
Surr: 4-Bromofluorobenzene
*
49.0
50.00
98.0
10/27/2023
Surr: Dibromofluoromethane
*
51.0
50.00
102.1
10/27/2023
Surr: Toluene-d8
*
51.3
50.00
102.7
10/27/2023
Page 45 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Batch 213960 SampType: MBLK Units mq/l
SampID: MBLK-AM231027A-2 Date
Analyses Cert RL Oual Result Spike SPKRefVal %REC Low Limit High Limit Analyzed
Benzene
*
0.5
ND
10/27/2023
Bromoform
*
2.0
ND
10/27/2023
Ethylbenzene
*
2.0
ND
10/27/2023
m,p-Xylenes
*
2.0
ND
10/27/2023
Methylene chloride
*
2.0
ND
10/27/2023
Naphthalene
*
5.0
ND
10/27/2023
o-Xylene
*
2.0
ND
10/27/2023
Toluene
*
2.0
ND
10/27/2023
trans-1,2-Dichloroethene
*
2.0
ND
10/27/2023
Xylenes, Total
*
4.0
ND
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
48.1
50.00
96.2 80
120
10/27/2023
Surr: 4-Bromofluorobenzene
*
46.2
50.00
92.4 80
120
10/27/2023
Surr: Dibromofluoromethane
*
51.6
50.00
103.3 80
120
10/27/2023
Surr: Toluene-d8
*
48.2
50.00
96.3 80
120
10/27/2023
Batch 213960 SampType:
LCS
Units [jg/L
SampID: LCS-AM231027A-2
Date
Analyses
Cert
RL Oual Result
Spike SPKRefVal %REC
Low Limit High Limit Analyzed
Benzene
*
0.5
47.7
50.00
0
95.4
80
121
10/27/2023
Bromoform
*
2.0
53.4
50.00
0
106.7
71.6
129
10/27/2023
Ethylbenzene
*
2.0
49.7
50.00
0
99.4
83.1
116
10/27/2023
m,p-Xylenes
*
2.0
99.0
100.0
0
99.0
83.2
117
10/27/2023
Methylene chloride
*
2.0
42.1
50.00
0
84.2
71.4
124
10/27/2023
Naphthalene
*
5.0
50.3
50.00
0
100.6
71.6
124
10/27/2023
o-Xylene
*
2.0
48.9
50.00
0
97.8
82.3
115
10/27/2023
Toluene
*
2.0
48.7
50.00
0
97.3
82.4
112
10/27/2023
trans-1,2-Dichloroethene
*
2.0
45.7
50.00
0
91.3
80.8
126
10/27/2023
Xylenes, Total
*
4.0
148
150.0
0
98.6
83
116
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
47.8
50.00
95.5
80
120
10/27/2023
Surr: 4-Bromofluorobenzene
*
45.5
50.00
91.0
80
120
10/27/2023
Surr: Dibromofluoromethane
*
51.8
50.00
103.6
80
120
10/27/2023
Surr: Toluene-d8
*
48.7
50.00
97.4
80
120
10/27/2023
Page 46 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Batch 213960 SampType: LCSD Units [jg/L RPD Limit: 20
SampID: LCSD-AM231027A-2 Date
Analyses Cert RL Oual Result Spike SPKRefVal %REC RPDRefVal %RPD Analyzed
Benzene
*
0.5
47.3
50.00
0
94.6
47.69
0.80
10/27/2023
Bromoform
*
2.0
52.2
50.00
0
104.4
53.36
2.22
10/27/2023
Ethylbenzene
*
2.0
49.0
50.00
0
97.9
49.69
1.46
10/27/2023
m,p-Xylenes
*
2.0
98.0
100.0
0
98.0
99.01
1.07
10/27/2023
Methylene chloride
*
2.0
41.7
50.00
0
83.5
42.08
0.81
10/27/2023
Naphthalene
*
5.0
51.2
50.00
0
102.3
50.30
1.71
10/27/2023
o-Xylene
*
2.0
48.5
50.00
0
97.1
48.88
0.72
10/27/2023
Toluene
*
2.0
48.5
50.00
0
97.0
48.67
0.35
10/27/2023
trans-1,2-Dichloroethene
*
2.0
46.2
50.00
0
92.5
45.67
1.24
10/27/2023
Xylenes, Total
*
4.0
146
150.0
0
97.7
147.9
0.95
10/27/2023
Surr: 1,2-Dichloroethane-d4
*
47.2
50.00
94.3
10/27/2023
Surr: 4-Bromofluorobenzene
*
45.6
50.00
91.1
10/27/2023
Surr: Dibromofluoromethane
*
51.9
50.00
103.8
10/27/2023
Surr: Toluene-d8
*
48.6
50.00
97.1
10/27/2023
Batch 213972 SampType:
MBLK
Units [jg/L
SampID: MBLK-AM231030A-1
Date
Analyses
Cert
RL Oual Result
Spike SPKRefVal %REC
Low Limit High Limit Analyzed
Benzene
*
0.5
ND
10/30/2023
Bromoform
*
2.0
ND
10/30/2023
Ethylbenzene
*
2.0
ND
10/30/2023
m,p-Xylenes
*
2.0
ND
10/30/2023
Methylene chloride
*
2.0
ND
10/30/2023
Naphthalene
*
5.0
ND
10/30/2023
o-Xylene
*
2.0
ND
10/30/2023
Toluene
*
2.0
ND
10/30/2023
trans-1,2-Dichloroethene
*
2.0
ND
10/30/2023
Xylenes, Total
*
4.0
ND
10/30/2023
Surr: 1,2-Dichloroethane-d4
*
46.8
50.00
93.6
80
120
10/30/2023
Surr: 4-Bromofluorobenzene
*
46.2
50.00
92.5
80
120
10/30/2023
Surr: Dibromofluoromethane
*
52.4
50.00
104.8
80
120
10/30/2023
Surr: Toluene-d8
*
47.8
50.00
95.5
80
120
10/30/2023
Page 47 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Batch 213972 SampType: LCS Units Mg/L
SampID: LCS-AM231030A-1 Date
Analyses Cert RL Oual Result Spike SPKRefVal %REC Low Limit High Limit Analyzed
Benzene
*
0.5
48.4
50.00
0
96.7
80
121
10/30/2023
Bromoform
*
2.0
54.3
50.00
0
108.7
71.6
129
10/30/2023
Ethylbenzene
*
2.0
49.0
50.00
0
97.9
83.1
116
10/30/2023
m,p-Xylenes
*
2.0
98.8
100.0
0
98.8
83.2
117
10/30/2023
Methylene chloride
*
2.0
42.0
50.00
0
84.0
71.4
124
10/30/2023
Naphthalene
*
5.0
52.2
50.00
0
104.5
71.6
124
10/30/2023
o-Xylene
*
2.0
48.6
50.00
0
97.3
82.3
115
10/30/2023
Toluene
*
2.0
48.8
50.00
0
97.6
82.4
112
10/30/2023
trans-1,2-Dichloroethene
*
2.0
46.2
50.00
0
92.4
80.8
126
10/30/2023
Xylenes, Total
*
4.0
147
150.0
0
98.3
83
116
10/30/2023
Surr: 1,2-Dichloroethane-d4
*
45.8
50.00
91.6
80
120
10/30/2023
Surr: 4-Bromofluorobenzene
*
44.0
50.00
88.0
80
120
10/30/2023
Surr: Dibromofluoromethane
*
52.0
50.00
104.1
80
120
10/30/2023
Surr: Toluene-d8
*
47.9
50.00
95.8
80
120
10/30/2023
Batch 213972 SampType:
LCSD
Units [jg/L
RPD Limit: 20
SampID: LCSD-AM231030A-1
Date
Analyses
Cert
RL Oual Result
Spike SPKRefVal %REC
RPDRefVal %RPD Analyzed
Benzene
*
0.5
46.4
50.00
0
92.7
48.35
4.18
10/30/2023
Bromoform
*
2.0
53.0
50.00
0
106.0
54.34
2.52
10/30/2023
Ethylbenzene
*
2.0
47.2
50.00
0
94.4
48.97
3.70
10/30/2023
m,p-Xylenes
*
2.0
94.8
100.0
0
94.8
98.84
4.21
10/30/2023
Methylene chloride
*
2.0
40.9
50.00
0
81.9
41.99
2.56
10/30/2023
Naphthalene
*
5.0
51.2
50.00
0
102.4
52.24
2.03
10/30/2023
o-Xylene
*
2.0
47.0
50.00
0
94.0
48.64
3.43
10/30/2023
Toluene
*
2.0
46.6
50.00
0
93.2
48.82
4.70
10/30/2023
trans-1,2-Dichloroethene
*
2.0
44.1
50.00
0
88.2
46.20
4.61
10/30/2023
Xylenes, Total
*
4.0
142
150.0
0
94.5
147.5
3.96
10/30/2023
Surr: 1,2-Dichloroethane-d4
*
46.0
50.00
92.1
10/30/2023
Surr: 4-Bromofluorobenzene
*
44.2
50.00
88.4
10/30/2023
Surr: Dibromofluoromethane
*
51.9
50.00
103.8
10/30/2023
Surr: Toluene-d8
*
47.7
50.00
95.5
10/30/2023
Page 48 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Batch 213972 SampType: MS Units Mg/L
SampID: 23102244-021BMS Date
Analyses Cert RL Oual Result Spike SPKRefVal %REC Low Limit High Limit Analyzed
Benzene
5.00
811
500.0
392.2
83.8
73.4
121
10/30/2023
Ethylbenzene
10.0
584
500.0
134.1
90.1
76.2
120
10/30/2023
m,p-Xylenes
10.0
490
500.0
17.60
94.6
82.8
127
10/30/2023
o-Xylene
10.0
522
500.0
71.20
90.2
79.2
116
10/30/2023
Toluene
20.0
470
500.0
30.30
87.9
75
113
10/30/2023
Xylenes, Total
20.0
1010
1000
88.80
92.4
81.2
121
10/30/2023
Surr: 1,2-Dichloroethane-d4
*
466
500.0
93.2
80
120
10/30/2023
Surr: 4-Bromofluorobenzene
*
440
500.0
87.9
80
120
10/30/2023
Surr: Dibromofluoromethane
*
520
500.0
104.1
80
120
10/30/2023
Surr: Toluene-d8
*
476
500.0
95.3
80
120
10/30/2023
Batch 213972 SampType:
MSD
Units [jg/L
RPD Limit: 20
SampID: 23102244-021 BMS D
Date
Analyses
Cert
RL Oual Result
Spike SPKRefVal %REC
RPDRefVal %RPD Analyzed
Benzene
5.00
840
500.0
392.2
89.6
811.2
3.54
10/30/2023
Ethylbenzene
10.0
596
500.0
134.1
92.3
584.4
1.90
10/30/2023
m,p-Xylenes
10.0
496
500.0
17.60
95.8
490.4
1.24
10/30/2023
o-Xylene
10.0
525
500.0
71.20
90.8
522.0
0.57
10/30/2023
Toluene
20.0
475
500.0
30.30
88.9
469.9
1.00
10/30/2023
Xylenes, Total
20.0
1020
1000
88.80
93.3
1012
0.89
10/30/2023
Surr: 1,2-Dichloroethane-d4
*
472
500.0
94.4
10/30/2023
Surr: 4-Bromofluorobenzene
*
445
500.0
89.0
10/30/2023
Surr: Dibromofluoromethane
*
525
500.0
105.0
10/30/2023
Surr: Toluene-d8
*
472
500.0
94.3
10/30/2023
Page 49 of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Batch 214133 SampType: MBLK Units [jg/L
SampID: MBLK-AM231101A-1 Date
Analyses Cert RL Oual Result Spike SPKRefVal %REC Low Limit High Limit Analyzed
Benzene
*
0.5
ND
11/01/2023
Bromoform
*
2.0
ND
11/01/2023
Ethylbenzene
*
2.0
ND
11/01/2023
m,p-Xylenes
*
2.0
ND
11/01/2023
Methylene chloride
*
2.0
ND
11/01/2023
Naphthalene
*
5.0
ND
11/01/2023
o-Xylene
*
2.0
ND
11/01/2023
Toluene
*
2.0
ND
11/01/2023
trans-1,2-Dichloroethene
*
2.0
ND
11/01/2023
Xylenes, Total
*
4.0
ND
11/01/2023
Surr: 1,2-Dichloroethane-d4
*
46.9
50.00
93.9
80
120
11/01/2023
Surr: 4-Bromofluorobenzene
*
44.8
50.00
89.5
80
120
11/01/2023
Surr: Dibromofluoromethane
*
53.4
50.00
106.8
80
120
11/01/2023
Surr: Toluene-d8
*
47.2
50.00
94.5
80
120
11/01/2023
Batch 214133 SampType:
LCS
Units [jg/L
SampID: LCS-AM231101A-1
Date
Analyses
Cert
RL Oual Result
Spike SPKRefVal %REC
Low Limit High Limit Analyzed
Benzene
*
0.5
52.2
50.00
0
104.4
80
121
11/01/2023
Bromoform
*
2.0
61.3
50.00
0
122.6
71.6
129
11/01/2023
Ethylbenzene
*
2.0
53.2
50.00
0
106.4
83.1
116
11/01/2023
m,p-Xylenes
*
2.0
107
100.0
0
106.8
83.2
117
11/01/2023
Methylene chloride
*
2.0
45.8
50.00
0
91.6
71.4
124
11/01/2023
Naphthalene
*
5.0
59.7
50.00
0
119.4
71.6
124
11/01/2023
o-Xylene
*
2.0
53.3
50.00
0
106.7
82.3
115
11/01/2023
Toluene
*
2.0
52.6
50.00
0
105.3
82.4
112
11/01/2023
trans-1,2-Dichloroethene
*
2.0
48.7
50.00
0
97.4
80.8
126
11/01/2023
Xylenes, Total
*
4.0
160
150.0
0
106.7
83
116
11/01/2023
Surr: 1,2-Dichloroethane-d4
*
45.8
50.00
91.6
80
120
11/01/2023
Surr: 4-Bromofluorobenzene
*
44.1
50.00
88.3
80
120
11/01/2023
Surr: Dibromofluoromethane
*
52.2
50.00
104.4
80
120
11/01/2023
Surr: Toluene-d8
*
48.2
50.00
96.4
80
120
11/01/2023
Page SO of 52
-------
eMabinc. Quality Control Results
Environmental Laboratory http://www.teklabinc.com/
Client: ERM Work Order: 23102244
Client Project: Ameren Taylorville 4th Qtr 2023 Report Date: 10-Nov-23
SW-846 5030, 8260B, VOLATILE ORGANIC COMPOUNDS BY GC/MS
Batch 214133 SampType: LCSD Units [jg/L RPD Limit: 20
SampID: LCSD-AM231101A-1 Date
Analyses Cert RL Oual Result Spike SPKRefVal %REC RPDRefVal %RPD Analyzed
Benzene
*
0.5
45.6
50.00
0
91.2
52.19
13.52
11/01/2023
Bromoform
*
2.0
51.9
50.00
0
103.8
61.31
16.60
11/01/2023
Ethylbenzene
*
2.0
45.8
50.00
0
91.6
53.19
14.91
11/01/2023
m,p-Xylenes
*
2.0
92.6
100.0
0
92.6
106.8
14.21
11/01/2023
Methylene chloride
*
2.0
39.8
50.00
0
79.7
45.79
13.90
11/01/2023
Naphthalene
*
5.0
50.6
50.00
0
101.2
59.68
16.51
11/01/2023
o-Xylene
*
2.0
45.8
50.00
0
91.5
53.33
15.30
11/01/2023
Toluene
*
2.0
45.4
50.00
0
90.8
52.63
14.75
11/01/2023
trans-1,2-Dichloroethene
*
2.0
43.5
50.00
0
87.0
48.72
11.37
11/01/2023
Xylenes, Total
*
4.0
138
150.0
0
92.2
160.1
14.57
11/01/2023
Surr: 1,2-Dichloroethane-d4
*
46.1
50.00
92.3
11/01/2023
Surr: 4-Bromofluorobenzene
*
44.4
50.00
88.8
11/01/2023
Surr: Dibromofluoromethane
*
52.2
50.00
104.5
11/01/2023
Surr: Toluene-d8
*
47.5
50.00
95.0
11/01/2023
Page 51 of 52
-------
\
sklabint
Environmental Laboratory
Receiving Check List
http://www.teklabinc.com/
Client: ERM
Client Project: Ameren Taylorville 4th Qtr 2023
Work Order: 23102244
Report Date: lO-Nov-23
Carrier: Caleb Lowell
Completed by:
On:
27-Oct-23
If) C&fciULC
Amber Dilallo
Received By: HAW
Reviewed by:
On:
27-Oct-23
, I. . ฆ
ป- i. t -i-'k
Ellie Hopkins
Pages to follow: Chain of custody 3
Extra pages included 0
Shipping container/cooler in good condition?
Yes
0
No ~
Not Present
~
Type of thermal preservation?
None
~
Ice 0
Blue Ice
~
Chain of custody present?
Yes
0
No ~
Chain of custody signed when relinquished and received?
Yes
0
No ~
Chain of custody agrees with sample labels?
Yes
0
No ~
Samples in proper container/bottle?
Yes
0
No ~
Sample containers intact?
Yes
0
No ~
Sufficient sample volume for indicated test?
Yes
0
No ~
All samples received within holding time?
Yes
0
No ~
Reported field parameters measured:
Field
~
Lab ~
NA
0
Container/Temp Blank temperature in compliance?
Yes
~
No 0
When thermal preservation is required, samples are compliant with a temperature between
0.1 ฐC - 6.0ฐC, or when samples are received on ice the same day as collected.
Water - at least one vial per sample has zero headspace?
Yes
u
No 0
No VOA vials ~
Water - TOX containers have zero headspace?
Yes
~
No ~
No TOX containers 0
Water - pH acceptable upon receipt?
Yes
0
No ~
NA ~
NPDES/CWA TCN interferences checked/treated in the field?
Yes
~
No ~
NA 0
Temp ฐC
Dry Ice
6.2
~
Any No responses must be detailed below or on the COC.
Headspace was present in the GW-05, GW-14, GW-16D, GW-18D, GW-19D and GW-22D volatile vials. Client was notified via work order
summary. - JHR/amberdilallo/EAH - 10/27/2023 2:46:57 PM
Trip Blank collection date and time will be reported as the received date and time (end of trip). - amberdilallo - 10/27/2023 2:48:40 PM
The samples were out of temperature compliance upon receipt. Client was notified via work order summary. - ehopkinsk/EAH - 10/27/2023 3:00:04
PM
Page 52 of 52
-------
CHAIN OF CUSTODY
pg. of 3 Work order
TEKLAB, INC. 5445 Horseshoe Lake Road - Collinsville, IL 62234 - Phone: (618) 344-1004 - Fax: (618) 344-1005
ERM
Client:
Address: 1968 Craig Road
City / State / Zip St. Louis, MO 63146
Contact:
E-Mail:
Michael Abegg
michael.abegg@erm.com
Phone:
Fax:
Are these samples known to be involved in litigation? If yes, a surcharge will apply D Yes 0 No
Are these samples known to be hazardous? If yes, include details of the hazard. D Yes IE No
Are there any required reporting limits to be met on the requested analysis?. If yes, please provide
limits in the comment section, j^j yes D No
Samples on:
Preserved in:
Lab Notes:
ICE ~ BLUE ICE ~ NO ICE {J - "X ฐC LTG# S
LAB ^FIELD FOR LAB USE ONLY
A j-j
Client Comments
/>f^u j>r
Project Name/Number
Sample Collector's Name
MATRIX
INDICATE ANALYSIS REQUESTED
Ameren Taylorville 4th Qtr 2023
>
ฆQ
Groundwater
Trip Blank
PAHs
VOCs
, Results Requested
Billing Instructions
#
and
Tyi
je c
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ontซ
line
rs
^Standard (J
~ ฐr
\0fi5 \~&
1
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X
X
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GW-07.^J10 "0t
fota-te j t|tfrjl3- {-eo0
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X
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GW-16S -W |j --!P2%pl5
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1
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totf&ha; \5MB
1
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X
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1
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X
X
X
ch
GW-18S-V)
1
2
X
X
X
_ __Dlo.
GW-18D
Vlป5
1
2
X
X
X
Relinquished Bv
Date/Time
Received Bv
Date/Time
ivltl/z:i ; /3H
ID J31)03 B3te
The individual signing this agreement on behalf of the client, acknowledges that he/she has read and understands the terms and conditions of this
agreement, and that he/she has the authority to sign on behalf of the client. See www.teklabinc.com for terms and conditions.
BottleOrder: 84200
m
-------
CHAIN OF CUSTODY
P9- 2 of 3 Work order
TEKLAB, INC. 5445 Horseshoe Lake Road - Collinsville, IL 62234 - Phone: (618) 344-1004 - Fax: (618) 344-1005
ERM
Client:
Address: 1968 Craig Road
City / State I Zip St. Louis, MO 63146
Contact:
E-Mail:
Michael Abegg
michae!.abegg@erm.com
Phone:
Fax:
Are these samples known to be involved in litigation? If yes, a surcharge will apply D Yes i-jvNo
Are these samples known to be hazardous? If yes, include details of the hazard. [] Yes J2L.No
Are there any required reporting limits to be met on the requested analysis?. If yes, please provide
limits in the comment section. -j^Yes D No
Samples on: JH^ce
Preserved in: ~ lab
Lab Notes:
H BLUE ICE 0 NO ICE (ฃฐC LTG#
3
FIELD
FOR LAB USE ONLY
Client Comments
Project Name/Number
Sample Collector's Name
MATRIX
INDICATE ANALYSIS REQUESTED
Ameren Taylorville 4th Qtr 2023
/ by
ฃ
Groundwater
Trip Blank
PAHs
VOCs
, Results Requested
Standard Q] 1-2 Day (100% Surcharge)
f 1 Other O 3 Day (50% Surcharge)
Billing Instructions
'#
and
Tyi
je c
fC
ant;
line
rs
c
z
X
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ง
o
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Lab Use Only
Sample Identification
Date/Time Sampled
UH
gw-1 9S
id0i&: vo5o
1
2
X
X
X
Gil
^-19D:^y~W$WVe
1
2
X
X
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1
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X
X
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U.St)
1
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X
X
X
Gib
GW-22S-VJV
\SHo
1
2
X
X
X
GW-32D-M^^0fS^WUb
j
1
2
X
X
X
tD jt>(l3)
1
2
X
X
X
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feW-Blarf?f"-W&--7<>33fr
wv-Cte\
^ wfebte "1-^
1
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X
X
X
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lD J-tS" , ofy*
2
X
X
(Yd
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-ฆ*( dtMa: imS
2
X
|
X
Relinquished By
Date/Time
Received By
Date/Time
k?/z7/^s ; J5?^
(0/31 lฃZ 1
The individual signing this agreement on behalf of the client, acknowledges that he/she has read and understands the terms and conditions of this
agreement, and that he/she has the authority to sign on behalf of the client. See www.teklabinc.com for terms and conditions.
BottleOrder: 84200
m
-------
CHAIN OF CUSTODY
pg-
of
Work order
TEKLAB, INC. 5445 Horseshoe Lake Road - Collinsville, IL 62234 - Phone: (618) 344-1004 - Fax: (618) 344-1005
Samples on: "ST ICE
Preserved in: H lab
Lab Notes:
ERM
Client:
Address: 1968 Craig Road
St. Louis, MO 63146
City / State I Zip
Contact: Michael Abegg
E-Mail' michael.abegg@erm.com
Phone:
Fax:
Are these samples known to be involved in litigation? If yes, a surcharge will apply Q Yes jfi-, No
Are these samples known to be hazardous? If yes, include details of the hazard. Q Yes 01 No
Are there any required reporting limits to be met on the requested analysis?. If yes, please provide
limits in the comment section. 0vYes D No
BLUE ICE 0 NO ICE
Lc-
LTG#
\ FIELD
FOR LAB USE ONLY
Client Comments
Project Name/Number Sample Collector's Name
MATRIX
INDICATE ANALYSIS REQUESTED
Ameren Taylorville 4th Qtr 2023 I */ป ^. ; , ^\\
1 Nht^ri Lcw&U
*
Groundwater
Trip Blank
PAHs
VOCs
Results Requested
Standard | | 1-2 Day (100% Surcharge)
| [ Other O 3 Day (50% Surcharge)
Billing Instructions
#
and
Tyt
)e c
fC
ont:
line
rs
c
z
X
o
i
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c
en
Lab Use C nly
Sample Identification
Date/Time Sampled
^
2
X
X
Jlip-BlonM
?-
Y
X
_ o'l.)
feup*-W l&VT
1
2
X
X
X
on
GW-25-wy
1
2
X
X
X
GW-26
iote/13; IQnS
1
2
X
X
X
j
Relinquished By
Date/Time
Received By
Date/Time
\a)c
10 /o?~7jol-b \^Lp
The individual signing this agreement on behalf of the client, acknowledges that he/she has read and understands the terms and conditions of this
agreement, and that he/she has the authority to sign on behalf of the client. See www.teklabinc.com for terms and conditions.
BottleOrder: 84200
-------
1 1 Hi ill II "I lb H Mill II , II HIM II 111 II II" II , III' II II II Hill I ^
20 ER 2023
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-01
Remediation
Result
Result
Result
Result
Result
Result
Result
Result
Result (DUP)
Result
Result
Result
Analyte
Unit
Objective (RO)
3/4/2015
5/13/2015
8/19/2015
11/3/2015
2/17/2016
5/25/2016
8/17/2016
11/15/2016
11/15/2016
2/14/2017
5/16/2017
8/16/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
0.0013 J
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
0.00012 J
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001 B
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
|jg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
ijg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
ijg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
ijg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
ijg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2 B
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Naphthalene
ijg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
ijg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
ijg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
ijg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
ijg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the
laboratory reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
NA = Not analyzed due to laboratory error.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-01
Remediation
Result
Result (DUP)
Result
Result (DUP)
Result
Result (DUP)
Result
Result (DUP)
Result
Result (DUP)
Result
Analyte
Unit
Objective (RO)
11/22/2017
11/22/2017
2/15/2018
2/15/2018
5/10/2018
5/10/2018
8/14/2018
8/14/2018
11/8/2018
11/8/2018
2/19/2019
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.006
<
0.006
0.0017 JSR
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001 s
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
Fluoranthene
mg/L
0.28
<
0.0001
B
<
0.0001 B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
o-Cresol
mg/L
0.35
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0001
B
0.000156 B
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002 B
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
<
2
<
2 B
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
1
<
1
<
1
<
1
<
1
<
1 B
<
1
<
1
<
1
<
1
<
1
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the
laboratory reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
NA = Not analyzed due to laboratory error.
z
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-01
Analyte
Unit
Remediation
Objective (RO)
Result
5/7/2019
Result
8/14/2019
Result
11/13/2019
Result
2/19/2020
Result
5/14/2020
Result
8/13/2020
Result
11/11/2020
Result
2/24/2021
Result
5/13/2021
Result
8/11/2021
Result
11/9/2021
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
NA
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
NA
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0001
0.000088 J
<
0.0001
<
0.0001
B
<
0.000222
<
0.0003
<
0.0003
<
0.0003
NA
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
NA
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0002
NA
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
0.00006 J
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
NA
0.000074 J
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000148
<
0.0002
<
0.0002
<
0.0002
NA
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
NA
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.00148 C
<
0.002 C
<
0.002 C
<
0.002
NA
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
NA
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0002
NA
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.00741
<
0.01
<
0.01
<
0.01
NA
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000222
<
0.0003
<
0.0003
<
0.0003
NA
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000148
<
0.0002
<
0.0002
<
0.0002
NA
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
B
<
0.000074
<
0.0001
<
0.0001
<
0.0002
NA
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.00741
<
0.01
<
0.01
<
0.01
NA
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.00741
<
0.01
<
0.01
<
0.01
NA
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
0.000891
<
0.0002
<
0.0002
<
0.000296
<
0.0004
<
0.0004
<
0.0004
NA
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.000444
<
0.0006
<
0.0006
0.000697
NA
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
B
<
0.000148
<
0.0002
<
0.0002
<
0.0002
NA
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.37 J
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.37 J
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the
laboratory reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
NA = Not analyzed due to laboratory error.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-01
Analyte
Unit
Remediation
Objective (RO)
Result
2/16/2022
Result
5/10/2022
Result
9/8/2022
Result
11/29/2022
Result
2/15/2023
Result
5/16/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
0.48 J
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
0.1 J
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the
laboratory reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
NA = Not analyzed due to laboratory error.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-02
Analyte
Unit
Remediation
Objective (RO)
Result
3/4/2015
Result
5/12/2015
Result
8/18/2015
Result
11/3/2015
Result
2/17/2016
Result
5/25/2016
Result
8/17/2016
Result
11/15/2016
Result
2/16/2017
Acenaphthene
mg/L
0.42
0.0081
J
0.00053
J
<
0.01
0.0213
0.004
J
<
0.01
<
0.01
0.00019
J
0.0053
J
Acenaphthylene
mg/L
-
0.004
J
0.00065
J
0.0001 J
0.0163
0.0056
J
0.0004
J
0.00011 J
0.0019
J
0.0087
J
Anthracene
mg/L
2.1
0.00035
J
0.00019
J
0.00018 J
0.00036
J
0.00026
J
0.00029
J
0.00026 J
0.00025
J
0.00036
J
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.00006
J
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00401
0.0472
0.00442
0.0021
0.0017
J
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
0.00013
J
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
0.00039
J
<
0.0021
<
0.0021
0.0001
J
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
0.00015
B
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
0.00012
J
<
0.0064
0.00023
J
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
0.00013
J
0.00011
J
<
0.0027
<
0.0027
0.00009
J
0.00009
J
Benzene
|jg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
ijg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
ijg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
ijg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
ijg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Naphthalene
ijg/L
140
<
0.6
5.44
<
0.6
1.53
1.53
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
ijg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
ijg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
ijg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
ijg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the
laboratory reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-02
Analyte
Unit
Remediation
Objective (RO)
Result
5/16/2017
Result
8/18/2017
Result
11/21/2017
Result
2/15/2018
Result
5/9/2018
Result
8/14/2018
Result
2/20/2019
Result
5/8/2019
Result (DUP)
5/8/2019
Acenaphthene
mg/L
0.42
0.0089
J
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
0.0103
0.00048
J
0.000323
0.000062 J
0.000791
0.000065 J
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
0.0012
J
0.00057
J
0.000329
0.000348
0.000273
0.000239
0.000243
0.000134
0.000113
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000056
J
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000059
J
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00229
0.00746
<
0.008
0.0018 J
<
0.002
0.00615
0.0108
0.00416
0.00756
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.00006
J
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
0.00022
J
0.00019
J
0.000118
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Fluorene
mg/L
0.28
0.00099
J
0.00012
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
o-Cresol
mg/L
0.35
Naphthalene
mg/L
0.14
0.00057
<
0.0002
Phenanthrene
mg/L
-
0.0018
J
<
0.0064
<
0.0001
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
0.00029
J
0.00022
J
0.000151
0.000155
0.000159
0.00012
0.00013
BJ
<
0.0002
<
0.0002
Benzene
|jg/L
5.0
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
ijg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
ijg/L
700
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
ijg/L
-
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
ijg/L
5.0
<
0.2
<
0.2
<
0.5
<
0.5
<
2
<
2
<
2
<
2
<
2
Naphthalene
ijg/L
140
1.21
<
0.6
<
0.1
<
2
<
2
<
2
<
2
1.5 J
<
2
o-Xylene
ijg/L
-
<
2
<
2
<
1
<
1
<
1
<
1
<
1
0.11 J
<
1
Toluene
ijg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
ijg/L
100
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
ijg/L
10000
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the
laboratory reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-02
Analyte
Unit
Remediation
Objective (RO)
Result
8/13/2019
Result
11/14/2019
Result (DUP)
11/14/2019
Result
2/19/2020
Result
5/14/2020
Result (DUP)
5/14/2020
Result
8/14/2020
Result
11/11/2020
Result (DUP)
11/11/2020
Result
2/24/2021
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000085
<
0.000085
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000085
<
0.000085
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
0.000085 J
0.00017
0.000165
<
0.0001
B
<
0.000254
<
0.000254
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000085
<
0.000085
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000085
<
0.000085
<
0.0001
<
0.0001
<
0.0001
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000085
<
0.000085
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000169
<
0.000169
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000085
<
0.000085
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0377
0.00335
0.00349
0.00726
<
0.00169 C
<
0.00169 C
0.0225 C
<
0.002 C
<
0.002 C
0.00364 C
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000085
<
0.000085
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000085
<
0.000085
<
0.0001
<
0.0001
<
0.0001
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.00847
<
0.00847
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000254
<
0.000254
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000169
<
0.000169
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
B
<
0.000085
<
0.000085
<
0.0001
<
0.0001
<
0.0001
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.00847
<
0.00847
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.00847
<
0.00847
<
0.01
<
0.0004
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
0.000268
<
0.0002
<
0.000339
<
0.000339
<
0.0004
<
0.01
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.000508
<
0.000508
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
0.00014 J
0.00012
<
0.0002
B
<
0.000169
<
0.000169
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
1.6 J
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2 B
<
2 B
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the
laboratory reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-02
Analyte
Unit
Remediation
Objective (RO)
Result
5/13/2021
Result
8/11/2021
Result
11/9/2021
Result
2/16/2022
Result
5/10/2022
Result
9/8/2022
Result
11/30/2022
Result (DUP)
11/30/2022
Result
2/15/2023
Result
5/16/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.00008
J
0.00171
H
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.00043
0.0036
H
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.000269
<
0.0003
H
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.00009
<
0.0001
H
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000179
<
0.0002
H
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
0.000074 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.00009
<
0.0001
H
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000179
<
0.0002
H
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.00009
<
0.0001
H
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00206
0.0195
<
0.002
B
<
0.002
<
0.002
0.0108 S
<
0.002
<
0.002
0.00431
<
0.002
H
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.00009
<
0.0001
H
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000179
<
0.0002
H
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.00896
<
0.01
H
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.000269
<
0.0003
H
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000325
0.00016
JH
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000179
<
0.0002
H
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.00896
<
0.01
H
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.00896
<
0.0004
H
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
0.00448
<
0.01
H
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.000537
<
0.0006
H
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000179
<
0.0002
H
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
1.23
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.53
J
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
0.35
J
<
1
<
1
<
1
<
1
<
1
0.36
J
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
<
2
<
2
0.47 J
0.46 BJ
7.22
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
1.21
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.15
J
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
0.35
J
<
2
<
2
<
2
<
2
<
2
1.6
J
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the
laboratory reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-03
Analyte
Unit
Remediation
Objective (RO)
Result
3/4/2015
Result
5/12/2015
Result
8/18/2015
Result
11/3/2015
Result (DUP)
11/3/2015
Result
2/17/2016
Result
5/25/2016
Result
8/17/2016
Result (DUP)
8/17/2016
Result
11/15/2016
Acenaphthene
mg/L
0.42
<
0.01
0.00042
J
0.00037
J
0.00012
J
0.00016
J
0.00041
J
0.00091
J
0.00079
J
0.001
J
0.00051 J
Acenaphthylene
mg/L
-
0.00036
J
0.0021
J
0.0017
J
0.00057
J
0.0009
J
0.002
J
0.0045
J
0.0033
J
0.0044
J
0.0024 J
Anthracene
mg/L
2.1
0.0001
J
0.00011
J
0.0001
J
0.00011
J
0.00012
J
0.00011
J
<
0.0066
0.00013
J
0.00013
J
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.00007
J
0.00006
J
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
0.00433
0.00502
0.0014
J
0.00248
0.0011
J
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
0.00062
J
0.00064
J
0.00073
J
0.00094
J
0.00098
J
0.0011
J
0.00048
J
0.001
J
0.00095
J
0.0011 J
Fluorene
mg/L
0.28
0.0001
J
0.00036
J
0.00043
J
0.00015
J
0.00019
J
0.0004
J
0.001
J
0.0009
J
0.0011
J
0.0006 J
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
0.00016
B
0.00039
0.00015
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
0.00015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
0.00011
J
0.00016
J
<
0.0064
0.00011
J
0.00011
J
0.00014
J
0.00022
J
0.00032
J
0.00038
J
0.0003 J
Pyrene
mg/L
0.21
0.00073
J
0.00078
J
0.00095
J
0.0012
J
0.0013
J
0.0014
J
0.0007
J
0.0016
J
0.0015
J
0.0017 J
Benzene
Mg/L
5.0
2.34
14.4
22.8
2.16
2
J
16.8
34.6
15.7
14.5
6.65
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
10
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
0.29
J
7.44
4.89
0.46
J
0.58
J
4.46
11.6
6.24
5.39
0.76 J
m,p-Xylenes
Mg/L
-
3.3
J
66.5
70
1.1
J
1.3
J
41.4
103
34.1
30.7
4.22
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
1.7
B
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
50.6
216
334
20.5
20.5
302
921
439
474
195
o-Xylene
Mg/L
-
3.62
41.4
48.1
1.8
J
2.11
45.6
95.3
36.7
33.3
9
Toluene
Mg/L
1000
0.66
J
14
8.28
0.31
J
0.37
J
7.98
20.8
7.68
6.74
0.83 J
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
25
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
6.91
108
118
3
J
3.4
J
87
198
70.8
64.1
13.2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-03
Analyte
Unit
Remediation
Objective (RO)
Result
2/16/2017
Result (DUP)
2/16/2017
Result
5/16/2017
Result (DUP)
5/16/2017
Result
8/18/2017
Result
11/21/2017
Result
2/15/2018
Result
5/9/2018
Result
8/14/2018
Result
11/7/2018
Acenaphthene
mg/L
0.42
0.00022
J
0.0002
J
0.00068
J
0.00064
J
0.00027
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
0.00084
J
0.00085
J
0.0028
J
0.0033
J
0.0015
J
0.000147
0.000072 J
0.000065
J
0.000143
0.000083
J
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
0.00019
J
0.00022
J
0.00016
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
0.00007
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000055
J
0.000096
J
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000072
J
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.00005
J
0.000101
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000051
J
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0018
J
0.0021
0.0107
<
0.006
0.00892
0.00306
<
0.002
0.00266
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000076
J
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
0.0011
J
0.001
J
0.0019
J
0.0021
J
0.00225
0.00162
0.000884
0.00109
0.00103
0.000901
Fluorene
mg/L
0.28
0.0003
J
0.00035
J
0.001
J
0.0013
J
0.00059
J
0.000122
<
0.0001
<
0.0001
<
0.0001
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
o-Cresol
mg/L
0.35
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
0.00012
J
0.00082
J
0.00081
J
<
0.0064
0.000154
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
0.0017
J
0.0016
J
0.00284
0.00325
0.00359
0.00279
0.00034
0.00124
0.00155
0.00118
Benzene
Mg/L
5.0
4.52
4.92
18.7
20.8
4.99
0.75
<
0.5
2.55
0.16
J
0.41
J
Bromoform
Mg/L
1.0
<
2
<
2
<
10
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
0.3
J
0.32
J
11.8
14.3
0.72
J
<
1
<
1
0.2
J
<
1
<
1
m,p-Xylenes
Mg/L
-
0.53
J
0.55
J
51.8
63.8
2.5
J
<
1
0.3 J
2.27
<
1
0.31
J
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
1
<
0.2
<
0.2
<
0.5
0.33 J
<
2
<
2
<
2
Naphthalene
Mg/L
140
22.2
23.6
554
370
67.7
1.05
<
2
8.12
<
2
1.8
J
o-Xylene
Mg/L
-
4.12
4.31
54.6
64.5
6.13
<
1
0.31 J
3.45
0.13
J
1.02
Toluene
Mg/L
1000
<
2
<
2
21.6
26.8
0.92
J
<
2
0.47 J
0.54
J
0.16
J
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
25
<
5
<
5
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
4.65
4.86
106
128
8.6
<
1
0.61 J
5.72
<
1
1.33
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-03
Analyte
Unit
Remediation
Objective (RO)
Result
2/20/2019
Result
5/8/2019
Result
8/13/2019
Result
11/14/2019
Result
2/19/2020
Result
5/12/2020
Result
8/14/2020
Result
11/10/2020
Result
2/24/2021
Result (DUP)
2/24/2021
Acenaphthene
mg/L
0.42
<
0.0001
0.000624
0.000792
0.00122
0.000844
0.00117
0.00139
0.000473
0.00078
0.000795
Acenaphthylene
mg/L
-
0.00018
0.00247
0.00229
0.00563
0.00292
0.0042
J
0.00501
0.00183
0.00346
0.00309
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
0.000163
0.00013
0.000154
0.00017
J
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000082
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
0.00006
J
<
0.0001
<
0.0001
<
0.000082
<
0.0001
<
0.0001
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
0.000133
<
0.0001
<
0.0001
<
0.000082
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0001
<
0.0002
0.00018
J
<
0.0002
<
0.0002
<
0.000164
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000082
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
0.00655
0.00207
<
0.05
0.0109
<
0.00164
C
0.0461
C
<
0.002 C
0.00316
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000082
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000082
<
0.0001
<
0.0001
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.0082
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
0.000626
0.00089
0.000664
0.00101
0.000421
0.000306
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
0.000828
0.00113
0.00244
0.00186
0.00274
0.00314
0.0012
0.00228
0.00235
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
0.00031
<
0.0001
0.000081 J
<
0.000082
0.000071
J
<
0.0001
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
0.00057
J
<
0.01
<
0.01
<
0.0082
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
0.00094
J
<
0.01
<
0.01
<
0.0082
<
0.01
<
0.0100
<
0.01
<
0.01
Naphthalene
mg/L
0.14
0.542
0.00132
0.597
0.153
0.521
0.587
0.128
0.239
0.181
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.0004
0.000653
0.000613
0.000971
0.0011
0.000605
0.001080
0.000925
Pyrene
mg/L
0.21
0.000953
B
0.00155
0.00109
0.00183
0.000819
0.000661
0.000298
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
3.71
43.9
30.2
10.8
24
50.1
47.1
16.2
23.6
22.8
Bromoform
Mg/L
1.0
<
2
<
2
<
20
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
0.14
J
23.8
7.3
J
3.81
12.7
42.6
40.5
21.6
32.4
31.6
m,p-Xylenes
Mg/L
-
2.65
124
83.1
22.8
41.6
135
76
9.33
25.8
25.5
Methylene chloride
Mg/L
5.0
<
2
<
2
<
20
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
26.9
606
1020
674
654
1000
842
924
421
425
o-Xylene
Mg/L
-
5.56
112
86.8
28.6
52.2
124
107
31
41.7
40.7
Toluene
Mg/L
1000
0.29
J
43.4
11
J
2.68
6.2
21.8
11.5
2.34
5.63
5.52
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
20
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
8.21
237
170
51.3
93.9
259
183
40.4
67.5
66.2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-03
Analyte
Unit
Remediation
Objective (RO)
Result
5/13/2021
Result
8/11/2021
Result
11/9/2021
Result
2/16/2022
Result
5/12/2022
Result
9/8/2022
Result (DUP)
9/8/2022
Result
11/30/2022
Result
2/15/2023
Result
5/18/2023
Acenaphthene
mg/L
0.42
0.000597
0.000938
0.000681
0.00064
0.00114
0.000699
0.000717
0.000207
0.00243
0.000196
H
Acenaphthylene
mg/L
-
0.00245
0.00292
0.00242
0.00245
0.00419
0.00275
0.00276
0.00093
0.00427
0.000914
H
Anthracene
mg/L
2.1
<
0.0003
0.00024 J
0.00023
J
<
0.0003
0.00025
J
<
0.0003
<
0.0003
<
0.0003
S
<
0.0003
<
0.0003
H
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0018
J
<
0.002
0.0019
BJ
0.00277
0.0029
0.0018 J
0.0015 J
<
0.002
S
0.00314
<
0.002
H
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
s
<
0.01
<
0.01
H
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
s
<
0.0003
<
0.0003
H
Fluorene
mg/L
0.28
0.00159
0.00262
0.00178
0.00175
0.0029
0.00188
0.00184
0.000851
<
0.0002
0.000606
H
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
s
<
0.0002
<
0.0002
H
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
H
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
0.0128
H
Naphthalene
mg/L
0.14
0.202
S
0.157
0.129
0.0873
0.329
S
0.114
0.133
0.0112
s
0.0004 J
<
0.01
H
Phenanthrene
mg/L
-
0.000769
0.00127
0.000785
0.000776
0.00143
0.00109
0.00103
<
0.0006
s
<
0.0006
<
0.0006
H
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
s
<
0.0002
<
0.0002
H
Benzene
Mg/L
5.0
10.4
24.2
11.2
13.3
24.6
8.58
11
2.46
s
<
0.5
5.6
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
20
<
2
<
2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
12.5
37.9
13.2
15.9
27.7
9.77
15
0.4
JS
<
1
3.95
m,p-Xylenes
Mg/L
-
6.19
16.4
3.16
3.42
31.9
1.57
2.01
0.32
JS
<
1
2.5
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
20
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
285
E
511
224
161
375
143
192
13.3
0.54 J
37.8
o-Xylene
Mg/L
-
15.7
38
13.8
12.5
40.2
8.35
11
1.51
s
<
1
6.58
Toluene
Mg/L
1000
1.3
J
4.37
2
J
1.1 J
9.3
J
0.74 J
1 J
0.14
JS
<
2
0.9
J
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
20
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
21.9
54.4
17
15.9
72.1
9.92
13
1.8
JS
<
2
9.08
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-04
Analyte
Unit
Remediation
Objective (RO)
Result
3/3/2015
Result
5/13/2015
Result
8/19/2015
Result
11/3/2015
Result
2/17/2016
Result
5/25/2016
Result
8/17/2016
Result
11/15/2016
Result
2/15/2017
Result
5/16/2017
Acenaphthene
mg/L
0.42
0.0011
J
0.002
J
0.0037
J
0.0027
J
0.0036
J
0.003
J
0.0043
J
0.0062
J
0.0054
J
0.0045
J
Acenaphthylene
mg/L
-
0.0049
J
0.0044
J
0.0073
J
0.0052
J
0.0061
J
0.0069
J
0.0095
J
0.0074
J
0.0053
J
0.0037
J
Anthracene
mg/L
2.1
0.0029
J
0.0011
J
0.0015
J
0.0015
J
0.0012
J
0.00081
J
0.00093
J
0.0012
J
0.0016
J
0.001
J
Benzo(a)anthracene
mg/L
0.00013
0.00022
0.00014
0.00024
0.00013
0.00016
0.0001
J
0.00012
0.00016
0.00017
0.000121
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
0.00012
0.00012
0.00025
<
0.0001
0.0001
0.00011
<
0.0001
0.00014
0.00012
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
0.00031
0.0004
0.00084
0.00016
0.0003
0.00022
0.0002
0.00048
0.00028
0.000207
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
0.0018
J
0.00242
0.00402
0.0018
J
0.00261
0.0018
J
0.00228
0.00357
0.00237
0.0018
J
Fluorene
mg/L
0.28
0.02
0.0239
0.0461
0.035
0.0396
0.0384
0.0467
0.0559
0.0447
0.0294
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
0.00325
0.012
0.0111
0.00118
0.00569
o-Cresol
mg/L
0.35
0.0244
0.0241
0.0149
0.00553
0.013
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
0.0157
0.023
0.0338
0.0271
0.0197
0.0236
0.0283
0.0442
0.0313
0.0198
Pyrene
mg/L
0.21
0.00085
J
0.0012
J
0.0018
J
0.00083
J
0.00098
J
0.00071
J
0.00097
J
0.0016
J
0.0012
J
0.00084
J
Benzene
Mg/L
5.0
1270
1380
400
947
526
1110
547
519
1680
1750
Bromoform
Mg/L
1.0
<
20
<
20
<
20
<
20
<
20
<
40
<
40
<
2
<
100
<
100
Ethylbenzene
Mg/L
700
137
148
122
156
154
191
139
169
200
260
m,p-Xylenes
Mg/L
-
75.7
101
68.9
79.3
81
144
108
124
200
J
170
J
Methylene chloride
Mg/L
5.0
<
2
2.6
2.2
<
2
3.2
33.8
B
7.2
0.2
<
10
<
10
Naphthalene
Mg/L
140
1350
1500
3140
2050
2480
2330
3390
2240
1960
2120
o-Xylene
Mg/L
-
125
130
122
131
132
139
122
147
169
183
Toluene
Mg/L
1000
138
191
131
219
165
518
301
249
553
316
trans-1,2-Dichloroethene
Mg/L
100
<
50
<
50
<
50
<
50
<
50
<
100
<
100
<
5
<
250
<
250
Xylenes, Total
Mg/L
10000
200
231
191
210
213
282
230
271
368
352
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-04
Analyte
Unit
Remediation
Objective (RO)
Result
8/17/2017
Result
11/22/2017
Result
2/15/2018
Result
5/8/2018
Result
8/14/2018
Result
11/7/2018
Result (DUP)
11/7/2018
Result
2/20/2019
Result
5/8/2019
Result
8/14/2019
Acenaphthene
mg/L
0.42
0.00789
0.00727
0.00737
0.0077
0.0139
0.0109
0.0108
0.0252
0.0165
0.0161
Acenaphthylene
mg/L
-
0.00633
0.00302
0.00178
0.00337
0.00913
0.0047
0.00445
0.0073
J
0.00597
0.0049
Anthracene
mg/L
2.1
0.0013
J
0.000558
0.000714
0.000411
0.00108
<
0.0025
0.0018 J
0.00106
0.000475
0.000814
Benzo(a)anthracene
mg/L
0.00013
0.000164
0.00017
0.00022
0.000117
0.00018
<
0.0025
<
0.0025
0.000147
0.000108
0.000185
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
< 0.0001
<
0.0001
<
0.0001
<
0.0025
<
0.0025
<
0.0001
<
0.0001
0.000085 J
Benzo(b)fluoranthene
mg/L
0.00018
0.00011
0.000168
0.000215
0.000106
0.000162
<
0.0025
<
0.0025
0.000164
0.000087 J
0.000191
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.0001
0.000071
J
<
0.0001
0.000052
J
<
0.0025
<
0.0025
0.00005
J
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
0.00006
J
<
0.0001
<
0.0001
<
0.0025
<
0.0025
0.000052
J
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0017
J
<
0.006
< 0.002
<
0.002
<
0.002
<
0.05
<
0.05
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
0.000288
0.000515
0.000732
0.000384
0.000554
<
0.0025
<
0.0025
0.000419
0.000317
0.000353
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
< 0.0001
<
0.0001
<
0.0001
<
0.0025
<
0.0025
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.01
Fluoranthene
mg/L
0.28
0.00404
0.00385
0.00305
0.00337
0.00392
<
0.005
<
0.005
0.00308
0.00283
0.00287
Fluorene
mg/L
0.28
0.0513
0.039
0.0466
0.0374
0.0644
0.0505
0.0507
0.0837
0.0519
0.0495
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
0.000106
0.00008
J
<
0.0001
0.000084
J
<
0.0025
<
0.0025
<
0.0001
<
0.0001
0.000178
m,p-Cresol
mg/L
-
<
1
o-Cresol
mg/L
0.35
<
1
Naphthalene
mg/L
0.14
1.14
1.59
Phenanthrene
mg/L
-
0.0453
0.0398
0.0247
0.0355
0.0513
0.0447
0.045
0.0734
0.0406
0.0406
Pyrene
mg/L
0.21
0.0021
J
0.00181
0.00156
0.00168
0.00187
<
0.005
<
0.005
0.0014
B
0.00128
0.0014
Benzene
Mg/L
5.0
599
565
355
979
630
958
871
1300
753
590
Bromoform
Mg/L
1.0
<
100
<
100
o
CM
V
<
20
<
40
<
200
<
200
<
2
<
2
<
40
Ethylbenzene
Mg/L
700
145
128
70.9
103
132
182
177
223
203
187
m,p-Xylenes
Mg/L
-
140
J
102
64.8
110
146
173
155
276
247
149
Methylene chloride
Mg/L
5.0
<
10
50.5
< 5
<
20
<
40
<
200
<
200
<
2
<
2
<
40
Naphthalene
Mg/L
140
2220
1790
1440
2670
E
3970
3680
3690
4580
4190
3740
o-Xylene
Mg/L
-
131
104
59.7
94.5
132
151
139
185
167
121
Toluene
Mg/L
1000
284
264
140
316
267
297
281
728
537
308
trans-1,2-Dichloroethene
Mg/L
100
<
250
<
100
o
CM
V
<
20
<
40
<
200
<
200
<
2
<
2
<
40
Xylenes, Total
Mg/L
10000
276
206
124
205
278
324
294
461
414
270
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-04
Analyte
Unit
Remediation
Objective (RO)
Result (DUP)
8/14/2019
Result
11/13/2019
Result (DUP)
11/13/2019
Result
2/18/2020
Result
5/13/2020
Result
8/13/2020
Result
11/10/2020
Result
2/24/2021
Result
5/13/2021
Result (DUP)
5/13/2021
Acenaphthene
mg/L
0.42
0.0148
0.0251
0.0226
0.0133
0.0212
0.0284
0.0148
0.0175
0.026
0.026
Acenaphthylene
mg/L
-
0.00482
0.00739
0.0056
J
0.00336
<
0.000075
0.00407
0.00144
0.00147
0.00229
0.00303
Anthracene
mg/L
2.1
0.000711
0.00173
0.00146
0.000775
<
0.000226
0.000868
0.000536
0.000792
0.000654
0.00109
Benzo(a)anthracene
mg/L
0.00013
0.000131
0.000278
0.000302
0.000102
0.000086
0.000113
0.000142
0.000133
0.000186
0.000261
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.01
0.000061
J
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
0.000132
<
0.01
0.000315
0.0001
0.000059
J
<
0.0001
0.000139
0.000120
0.000229
0.000376
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.02
0.00017
J
<
0.0002
<
0.00015
<
0.0002
0.00005
J
<
0.00020
<
0.00020
0.00019 J
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.01
0.000093
J
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0001
0.000077 J
0.000124
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.0015
C
<
0.002
C
<
0.002
C
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
0.000322
0.000795
0.000912
0.000284
0.000235
0.000313
0.000401
0.000334
0.000493
0.000747
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.01
0.000062
J
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
0.002
J
<
0.01
<
0.00752
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
0.00278
0.00616
<
0.02
0.00349
0.00315
0.00366
0.00265
0.0029
0.00334
0.0045
Fluorene
mg/L
0.28
0.0434
0.0857
0.0788
0.0464
0.0694
0.0777
0.0399
0.0607
0.0733
0.0735
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
0.000102
<
0.01
0.000166
0.000092
J
<
0.000075
0.000073
J
<
0.0001
<
0.0002
<
0.0002
0.00018 J
m,p-Cresol
mg/L
-
<
1
<
0.01
<
1
<
1
0.0017
J
0.0081
J
0.00075
J
0.0086 J
0.0164
0.022
o-Cresol
mg/L
0.35
<
1
<
0.01
<
1
<
1
<
0.752
0.0161
<
0.0100
0.0123
0.0209
0.0244
Naphthalene
mg/L
0.14
3.23
2.53
2.99
1.37
1.69
1.89
1.50
1.53
1.82
1.86
Phenanthrene
mg/L
-
<
0.04
0.079
0.0674
0.0422
0.0537
0.0681
0.0383
0.0576
0.0674
0.0647
Pyrene
mg/L
0.21
0.0013
0.00261
0.00308
0.00161
0.00141
0.00176
0.00143
0.00149
0.00143
0.00219
Benzene
Mg/L
5.0
618
495
506
535
S
739
450
399
632
341
775
Bromoform
Mg/L
1.0
<
40
<
2
<
2
<
2
<
20
<
2
<
2
<
2
<
100
<
20
Ethylbenzene
Mg/L
700
195
190
187
173
246
200
180
155
104
216
m,p-Xylenes
Mg/L
-
156
156
157
159
204
192
168
165
80.5
158
Methylene chloride
Mg/L
5.0
<
40
<
2
<
2
<
2
<
20
<
2
<
2
<
2
<
100
<
20
Naphthalene
Mg/L
140
4050
3710
3790
3570
5560
4700
E
4130
2790
1510
3150
o-Xylene
Mg/L
-
125
124
130
115
154
135
192
140
67
137
Toluene
Mg/L
1000
324
244
243
312
S
579
407
125
208
184
409
trans-1,2-Dichloroethene
Mg/L
100
<
40
<
2
<
2
<
2
<
20
<
2
<
2
<
2
<
100
<
20
Xylenes, Total
Mg/L
10000
281
280
287
274
358
327
359
304
148
295
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-04
Analyte
Unit
Remediation
Objective (RO)
Result
8/12/2021
Result - DUP
8/12/2021
Result
11/9/2021
Result
2/17/2022
Result - DUP
2/17/2022
Result
5/12/2022
Result - DUP
5/12/2022
Result
9/8/2022
Result
11/30/2022
Result
2/15/2023
Acenaphthene
mg/L
0.42
0.022
0.0239
0.0274
0.0316
0.0348
0.0339
0.0437
0.0404
0.00135
0.0348
Acenaphthylene
mg/L
-
0.00618
0.00584
0.00531
0.00244
0.0029
0.00893
0.0101
0.00446
0.00447
0.00218
Anthracene
mg/L
2.1
0.000745
0.000691
0.00093
0.0012
0.000864
<
0.0003
<
0.0003
0.000749
0.00241
0.000925
Benzo(a)anthracene
mg/L
0.00013
0.000158
0.000173
0.000214
0.000104
0.000085 J
<
0.0001
0.000115
0.00009
J
0.00194
0.00015
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.00012
J
<
0.0002
0.00017 J
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
0.000125
0.000192
0.000226
<
0.0001
0.000084 J
<
0.0001
0.000128
<
0.0001
0.00252
0.000101
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000544
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
0.00007
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000697
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
B
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
0.002 J
<
0.002
Chrysene
mg/L
0.0015
0.000491
0.000501
0.000754
0.0002
0.000196
0.00013
0.00022
0.000241
0.00674
0.000513
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000256
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
0.00379
0.00404
0.00397
0.00375
0.00357
0.00289
0.00383
0.00414
0.021
0.00489
Fluorene
mg/L
0.28
0.0689
0.0776
0.07
0.0906
0.0765
0.0847
0.104
0.0853
0.0841
0.08
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000588
<
0.0002
m,p-Cresol
mg/L
-
0.007
J
0.0083 J
<
0.01
0.0023 J
0.0018 J
0.0046 J
0.0068
J
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
0.0095
J
0.0074 J
<
0.01
0.0059 J
0.0035 J
0.058 J
0.008
J
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
1.62
1.75
2.43
1.82
1.82 J
2.77
3.54
2.8
1.5
1.83
Phenanthrene
mg/L
-
0.0562
0.0609
0.0542
0.0801
0.075
0.0715
0.0888
0.0799
0.142
0.0722
Pyrene
mg/L
0.21
0.00184
0.00184
0.0019
0.00177
0.00174
0.00131
0.00184
0.00176
0.0124
0.00208
Benzene
Mg/L
5.0
652
658
798
1150
1180
1100
1070
670
895
609
Bromoform
Mg/L
1.0
<
100
<
2
<
200
<
2
<
2
<
100
<
100
<
20
<
2
<
10
Ethylbenzene
Mg/L
700
235
243
331
476
500
312
330
249
304
250
m,p-Xylenes
Mg/L
-
135
146
166
108
104
225
229
112
56.6
63.5
Methylene chloride
Mg/L
5.0
<
100
<
2
<
200
<
2
<
2
<
100
<
100
<
20
<
20
<
100
Naphthalene
Mg/L
140
3020
3020
3520
2530
2620
3550
3350
3540
2340
2380
o-Xylene
Mg/L
-
108
118
178
241
244
176
184
157
187
136
Toluene
Mg/L
1000
256
255
216
90.5
94.6
338
357
104
100
72 J
trans-1,2-Dichloroethene
Mg/L
100
<
100
<
2
<
200
<
2
<
2
<
100
<
100
<
20
<
20
<
100
Xylenes, Total
Mg/L
10000
243
265
344
350
347
400
412
269
243
199
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-04
Analyte
Unit
Remediation
Objective (RO)
Result -DUP-003
2/15/2023
Result
5/18/2023
Result - DUP
5/18/2023
Result
9/13/2023
Result - DUP
9/13/2023
Result
10/27/2023
Result - DUP
10/27/2023
Acenaphthene
mg/L
0.42
0.0334
0.0190
H
0.0241
H
0.0290
0.0299
0.0330
0.0373
Acenaphthylene
mg/L
-
0.00195
0.000868
H
0.00117
H
0.00144
0.00154
0.00163
0.00183
Anthracene
mg/L
2.1
0.000616
0.000346
H
0.000476
H
0.000854
0.000802
0.00092
0.00135
Benzo(a)anthracene
mg/L
0.00013
0.000109
<
0.0001
H
0.000072
JH
0.000096
J
0.000078
J
0.000570
0.000620
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
0.00007 J
<
0.0001
H
<
0.0001
H
<
0.0001
<
0.0001
0.000557
0.000591
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
H
<
0.0002
H
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
H
<
0.0001
H
<
0.0001
<
0.0001
0.000116
0.000139
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
H
<
0.002
H
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
0.000385
0.00021
H
0.00017
H
0.000209
0.000187
0.00217
0.00233
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
H
<
0.0002
H
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
H
<
0.01
H
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
0.00457
0.00257
H
0.00276
H
0.00460
0.00444
0.00893
<
0.015
Fluorene
mg/L
0.28
0.0801
0.0397
H
0.0537
H
0.0616
0.0538
0.0573
0.0802
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
H
<
0.0002
H
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
H
<
0.01
H
<
0.01
<
0.01
0.00079 J
0.001 J
o-Cresol
mg/L
0.35
<
0.01
<
0.0004
H
0.398
H
0.410
0.446
0.343
0.414
Naphthalene
mg/L
0.14
1.86
0.00090
JH
0.00098
JH
<
0.01
<
0.01
<
0.01
0.001 J
Phenanthrene
mg/L
-
0.0735
0.0148
H
0.0461
H
0.0694
<
0.15
0.0669
0.0915
Pyrene
mg/L
0.21
0.00203
0.000948
H
0.00102
H
0.00225
0.00227
0.00411
0.00465
Benzene
Mg/L
5.0
612
341
364
235
241
346
392
Bromoform
Mg/L
1.0
<
0.2
<
2
<
10
<
2
<
2
<
2
<
0.2
Ethylbenzene
Mg/L
700
250
186
184
144
144
117
159
m,p-Xylenes
Mg/L
-
64.5
39.3
48
J
19.1
20.8
14.7
19.7
Methylene chloride
Mg/L
5.0
<
2
38.3
<
100
<
20
10
J
<
20
<
2
Naphthalene
Mg/L
140
2490
1580
1480
814
740
510
531
o-Xylene
Mg/L
-
148
93.4
100
80.3
82.1
62
80.8
Toluene
Mg/L
1000
70.8
30.5
42
J
14
J
15
J
24.8
34.8
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
20
<
100
<
20.0
<
20
<
20
<
2
Xylenes, Total
Mg/L
10000
213
133
148
99.4
103
76.7
101
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-05
Analyte
Unit
Remediation
Objective (RO)
Result
3/4/2015
Result (DUP)
3/4/2015
Result
5/13/2015
Result (DUP)
5/13/2015
Result
8/19/2015
Result
11/4/2015
Result (DUP)
11/4/2015
Result
2/18/2016
Result
5/26/2016
Result
8/18/2016
Result (DUP)
8/18/2016
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
S
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
S
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
S
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
S
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0195
0.00664
0.0163
0.0089
0.00718
0.00763
0.00558
0.00351
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
S
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
S
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001 B
<
0.0001 B
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
0.0001 J
<
0.0064
<
0.0064
<
0.0064
<
0.0064
S
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
S
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2 B
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
6.55
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
H=Laboratory hold times exceeded. GW-05 and GW-07 reanalyzed
for Napthalene at ERM request after laboratory instrument carryover
suspected from GW-04R sample.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-05
Analyte
Unit
Remediation
Objective (RO)
Result
11/16/2016
Result (DUP)
11/16/2016
Result
2/15/2017
Result
5/17/2017
Result (DUP)
5/17/2017
Result
8/17/2017
Result
11/21/2017
Result
2/14/2018
Result
5/9/2018
Result
8/13/2018
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
0.00008
J
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000094
J
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000079
J
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000066
J
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.0001
<
0.0001
<
0.0001
0.000045
J
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00861
0.011
0.013
0.00907
0.0218
0.0122
0.00256
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000062
J
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
0.0001 J
<
0.0001
B
<
0.0002
<
0.0002
<
0.0002
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
o-Cresol
mg/L
0.35
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
0.00013
B
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0001
B
<
0.0001
<
0.0001
<
0.0001
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.5
<
0.5
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.0001
<
2
<
2
0.81
J
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
1
<
1
<
1
<
1
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
H=Laboratory hold times exceeded. GW-05 and GW-07 reanalyzed
for Napthalene at ERM request after laboratory instrument carryover
suspected from GW-04R sample.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-05
Analyte
Unit
Remediation
Objective (RO)
Result
11/7/2018
Result
2/20/2019
Result
5/7/2019
Result
8/14/2019
Result
11/14/2019
Result
2/20/2020
Result
5/12/2020
Result
8/13/2020
Result (DUP)
8/13/2020
Result
11/11/2020
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000056
J
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
0.000051
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000233
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
0.000197
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
0.000097
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
0.000206
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0001
0.000084
J
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000155
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00287
0.0049
0.0103
0.00671
0.0089
<
0.002
0.0101
0.00227 C
0.00286 C
0.00845
S
Chrysene
mg/L
0.0015
<
0.0001
0.000268
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.00775
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
0.000204
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000233
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
0.000141
<
0.0001
<
0.0001
<
0.0001
0.000158
<
0.000155
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
0.000088
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.00775
<
0.01
<
0.01
<
0.01
R
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.00775
<
0.01
<
0.01
<
0.0100
SR
Naphthalene
mg/L
0.14
<
0.0002
0.000214
0.000404
0.00366
0.00103
<
0.0004
<
0.0004
0.00159
S
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.000465
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
0.00017
BJ
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000155
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
0.41
J
<
0.5
<
0.5
0.22 J
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
0.31
J
<
1
<
1
0.2 J
<
1
<
1
<
1
<
1
0.25
J
m,p-Xylenes
Mg/L
-
<
1
0.35
J
<
1
<
1
0.19 J
0.18
J
<
1
<
1
<
1
0.29
J
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
35.9
<
2
0.49 J
<
2
46.6
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
0.23
J
<
1
<
1
0.13 J
0.11
J
<
1
<
1
<
1
0.17
JS
Toluene
Mg/L
1000
<
2
0.4
J
<
2
<
2
0.17 J
0.17
J
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
1
0.58
J
<
2
<
2
0.32 J
0.29
J
<
2
<
2
<
2
0.46
J
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
H=Laboratory hold times exceeded. GW-05 and GW-07 reanalyzed
for Napthalene at ERM request after laboratory instrument carryover
suspected from GW-04R sample.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-05
Analyte
Unit
Remediation
Objective (RO)
Result
2/24/2021
Result
5/11/2021
Result
8/12/2021
Result
11/9/2021
Result
2/15/2022
Result
5/10/2022
Result
9/7/2022
Result
11/29/2022
Result
2/13/2023
Result
5/16/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000075 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0087
0.00374
0.00627
0.00213
B
<
0.0002
<
0.0002
0.0017 J
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0004
Naphthalene
mg/L
0.14
0.00111
<
0.0004
0.00194
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.01
Phenanthrene
mg/L
-
0.000838
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
0.000221
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
0.18
J
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
0.22
J
<
1
<
1
1.21
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
0.2
J
<
1
<
1
0.99
J
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
H
<
2
1
J
<
1
1 J
0.49 BJ
<
2
o-Xylene
Mg/L
-
0.14
J
<
1
<
1
0.74
J
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
0.12
J
<
2
<
2
0.3
J
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
0.34
J
<
2
<
2
1.7
J
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
H=Laboratory hold times exceeded. GW-05 and GW-07 reanalyzed
for Napthalene at ERM request after laboratory instrument carryover
suspected from GW-04R sample.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-05
Analyte
Unit
Remediation
Objective (RO)
Result - DUP
5/16/2023
Result
9/13/2023
Result - DUP
9/13/2023
Result
10/25/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00262
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.0004
0.000663
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.01
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
0.31 J
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
1.4 J
11
0.93 J
o-Xylene
Mg/L
-
<
1
<
1
0.2 J
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
H=Laboratory hold times exceeded. GW-05 and GW-07 reanalyzed
for Napthalene at ERM request after laboratory instrument carryover
suspected from GW-04R sample.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-07
Analyte
Unit
Remediation
Objective (RO)
Result
3/3/2015
Result
5/11/2015
Result
8/18/2015
Result (DUP)
8/18/2015
Result
11/2/2015
Result
2/16/2016
Result (DUP)
2/16/2016
Result
5/25/2016
Result
8/17/2016
Acenaphthene
mg/L
0.42
<
0.01
<
0.00263
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
0.00013
J
<
0.00263
0.00011
J
0.00012
J
<
0.01
0.00011
J
0.0001
J
<
0.01
<
0.01
Anthracene
mg/L
2.1
0.00097
J
0.00071 J
0.00084
J
0.00089
J
0.00068
J
0.00073
J
0.00069
J
0.00054
J
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
0.0002
0.00026
0.00019
0.0002
0.00018
0.00018
0.00018
0.00015
0.00007 J
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00026
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00224
0.0102
0.00429
0.00232
0.00315
0.00209
0.0013
J
Chrysene
mg/L
0.0015
0.0001
<
0.00026
<
0.0001
0.0001
<
0.0001
0.00009
J
<
0.0001
0.00008
J
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.00263
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
0.0011
J
0.00087
0.00098
J
0.001
J
0.00083
J
0.00086
J
0.0008
J
0.00068
J
<
0.0021
Fluorene
mg/L
0.28
0.0003
J
0.00029
0.0003
J
0.00031
J
0.00021
J
0.00025
J
0.00025
J
0.00019
J
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
0.0001
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
0.00014
J
<
0.00263
<
0.0064
<
0.0064
0.00013
J
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
0.0015
J
0.0012 J
0.0014
J
0.0014
J
0.0012
J
0.0012
J
0.0011
J
0.001
J
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
0.24
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
B
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
1.47
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
H=Laboratory hold times exceeded. GW-05 and GW-07 reanalyzed
for Napthalene at ERM request after laboratory instrument carryover
suspected from GW-04R sample.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-07
Analyte
Unit
Remediation
Objective (RO)
Result
11/15/2016
Result
2/15/2017
Result
5/16/2017
Result
8/17/2017
Result
11/21/2017
Result
2/14/2018
Result
5/8/2018
Result
8/13/2018
Result
11/6/2018
Result
2/18/2019
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
0.00013
J
<
0.0001
0.000144
<
0.0001
0.000137
0.000149
0.000111
Acenaphthylene
mg/L
-
<
0.01
0.00011
J
0.00019
J
0.00019
J
0.000229
0.00034
0.000244
0.000282
0.00027
0.000266
Anthracene
mg/L
2.1
0.00063
J
0.00078
J
0.00091
J
0.0012
J
0.00179
0.00308
0.00198
0.00215
0.00164
0.00218
Benzo(a)anthracene
mg/L
0.00013
0.00015
0.00019
0.0002
0.000188
0.000192
0.000301
0.000203
0.000195
0.000224
0.0002
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.015
0.0149
<
0.006
0.00692
0.00796
0.0131
0.00353
0.00667
Chrysene
mg/L
0.0015
0.00008
J
0.0001
0.000148
0.000159
0.000144
0.000222
0.000133
0.000153
0.000135
0.000147
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
0.00258
Fluoranthene
mg/L
0.28
0.00075
J
0.001
J
0.0013
J
0.0016
J
0.00199
0.0032
0.00228
0.00039
0.00204
0.0022
Fluorene
mg/L
0.28
0.0002
J
0.0002
J
0.00036
J
0.00033
J
0.000376
0.000595
0.000427
<
0.0001
0.000353
0.000397
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
o-Cresol
mg/L
0.35
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
0.000233
0.000096 J
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
0.0011
J
0.0014
J
0.0018
J
0.0021
J
0.00259
0.00466
0.00336
0.00371
0.00281
0.00297
B
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
0.12
J
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.5
<
0.5
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
2
<
2
<
2
<
2
<
2
6.88
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.12
J
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
H=Laboratory hold times exceeded. GW-05 and GW-07 reanalyzed
for Napthalene at ERM request after laboratory instrument carryover
suspected from GW-04R sample.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-07
Analyte
Unit
Remediation
Objective (RO)
Result
5/8/2019
Result
8/13/2019
Result (Dup)
8/13/2019
Result
11/13/2019
Result
2/18/2020
Result
5/12/2020
Result
8/13/2020
Result
11/10/2020
Result
2/23/2021
Result
5/12/2021
Acenaphthene
mg/L
0.42
0.000136
0.000078
J
0.000086 J
0.000099
J
0.000077
J
0.000063
J
0.000071
J
0.000076
J
0.000076 J
0.000118
Acenaphthylene
mg/L
-
0.000253
0.000142
0.000135
0.000186
0.000116
0.000098
0.000105
0.000142
0.000168
0.000117
Anthracene
mg/L
2.1
0.00186
0.00106
0.00101
0.000964
R
0.000877
0.00069
0.000772
0.0012
0.00144
0.00119
Benzo(a)anthracene
mg/L
0.00013
0.000225
0.000213
0.000189
0.000221
0.000164
0.000141
0.000168
0.000155
0.000119
0.000161
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0005
<
0.0001
<
0.000072
<
0.0001
<
0.0001
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0005
R
0.000057
J
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.001
R
<
0.0002
<
0.000144
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0005
<
0.0001
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0019 J
0.00364
S
0.0048
<
0.005
S
0.011
0.0022
C
0.00202
C
0.00655
0.00975
0.00732
Chrysene
mg/L
0.0015
0.000145
0.000121
0.000145
0.000184
0.000116
0.000101
0.00014
0.000112
0.000082 J
0.000102
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0005
<
0.0001
<
0.000072
<
0.0001
<
0.0001
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.00719
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
0.00214
0.00142
0.00137
0.00126
0.00113
0.000996
0.000951
0.00119
0.00131
0.00136
Fluorene
mg/L
0.28
0.000457
0.000249
0.000255
0.000284
0.000235
0.000165
0.000205
0.000278
0.000295
0.000343
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0005
SR
<
0.0001
<
0.000072
0.000076
J
<
0.0001
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.00719
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.00719
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.00019
J
<
0.000288
<
0.0004
<
0.0004
<
0.0004
0.00329
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.000432
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
0.00312
0.00199
0.00194
0.00012
JSR
0.0016
0.00152
0.0014
0.00185
0.00197
0.00227
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
0.51
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.12
J
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2 B
<
2
<
2
<
2
6.07
<
2
0.64
J
1.4
J
<
2
1.4 J
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
0.1
J
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
H=Laboratory hold times exceeded. GW-05 and GW-07 reanalyzed
for Napthalene at ERM request after laboratory instrument carryover
suspected from GW-04R sample.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-07
Analyte
Unit
Remediation
Objective (RO)
Result
8/12/2021
Result
11/9/2021
Result
2/16/2022
Result
5/11/2022
Result
9/7/2022
Result
11/29/2022
Result
2/15/2023
Result
5/17/2023
Result
9/13/2023
Result
10/27/2023
Acenaphthene
mg/L
0.42
0.000079 J
0.000136
0.000183
0.000145
0.000118
0.00012
0.000183
0.000122
H
0.000155
0.000158
Acenaphthylene
mg/L
-
0.000137
0.000186
0.000251
0.000149
0.00017
0.000179
0.000203
0.000137
H
0.000194
0.000202
Anthracene
mg/L
2.1
0.00124
0.00146
0.00144
0.00153
0.00162
0.00144
0.00148
0.00115
H
0.00179
0.00161
Benzo(a)anthracene
mg/L
0.00013
0.000186
0.000235
0.000185
0.000182
0.000212
0.000201
0.000202
0.000183
H
0.000235
0.000211
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00233
0.00403
S
0.00290
0.00471
0.0015 J
0.00578
0.00331
0.0148
H
0.00395
0.00271
Chrysene
mg/L
0.0015
0.000122
0.00017
0.000177
0.000163
0.000164
0.000157
0.000141
0.000145
H
0.000194
0.000184
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
H
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
0.00146
0.00164
0.00147
0.00169
0.00154
0.00154
0.00127
0.00106
H
0.00141
0.00122
Fluorene
mg/L
0.28
0.000305
0.00039
0.000516
0.000368
0.000331
0.000366
0.0004
0.000331
H
0.000413
0.000393
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
H
<
0.01
<
0.01
o-Cresol
mg/L
0.35
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0004
H
<
0.0004
0.000614
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
0.00269
<
0.0004
<
0.0004
<
0.0004
0.00283
S
<
0.01
H
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
H
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
0.00233
0.0026
0.0025
0.0030
0.0028
0.00281
0.0026
0.00157
H
0.00238
0.00265
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
S
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
0.32
J
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
0.54
J
<
1
<
1
<
1
<
1
S
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
H
<
2
<
2
<
2
0.7
J
0.36
BJ
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
0.21
J
<
1
<
1
<
1
<
1
s
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
s
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
0.75
J
<
2
<
2
<
2
<
2
s
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
H=Laboratory hold times exceeded. GW-05 and GW-07 reanalyzed
for Napthalene at ERM request after laboratory instrument carryover
suspected from GW-04R sample.
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Taylorville, IL MGP Site
GW-9S
Analyte
Unit
Remediation
Objective (RO)
Result
5/14/2015
Result
5/24/2016
Result
5/17/2017
Result
5/9/2018
Result
5/6/2019
Result
5/12/2020
Result
5/12/2021
Result
5/10/2022
Result
5/17/2023
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
H
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
H
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.000233
<
0.0003
<
0.0003
<
0.0003
H
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
H
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0002
<
0.0002
<
0.0002
H
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
H
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.0001
<
0.0002
<
0.000155
<
0.0002
<
0.0002
<
0.0002
H
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
H
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.00155 C
<
0.002
0.0016
J
<
0.002
H
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
H
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0002
<
0.0002
<
0.0002
H
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.00775
<
0.01
<
0.01
<
0.01
H
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0002
<
0.000233
<
0.0003
<
0.0003
<
0.0003
H
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.000155
<
0.0002
<
0.0002
<
0.0002
H
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0002
<
0.0002
<
0.0002
H
m,p-Cresol
mg/L
-
<
0.0001
<
0.00775
<
0.01
<
0.01
<
0.01
H
o-Cresol
mg/L
0.35
<
0.0001
<
0.00775
<
0.01
<
0.01
<
0.0004
H
Naphthalene
mg/L
0.14
<
0.0002
<
0.00031
0.00273
<
0.0004
<
0.01
H
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
2
<
0.0004
<
0.0004
<
0.000465
<
0.0006
<
0.0006
<
0.0006
H
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
2
<
0.0001
<
0.0002
<
0.000155
<
0.0002
<
0.0002
B
<
0.0002
H
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
0.21
J
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
4
<
2
<
2
<
2
<
2
<
2
<
0.2
Ethylbenzene
Mg/L
700
<
2
<
2
<
0.2
<
1
<
1
<
1
0.33
J
0.11
J
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
0.6
<
1
<
1
<
1
0.27
J
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
0.85 B
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
2
<
2
B
<
2
<
2
37.8
1.4
J
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
5
<
1
<
1
<
1
0.2
J
0.1
J
<
1
Toluene
Mg/L
1000
<
2
<
2
<
4
<
2
<
2
<
2
0.32
J
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
1
B
<
2
<
2
0.47
J
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = IEPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Taylorville, IL MGP Site
GW-9D
Analyte
Unit
Remediation
Objective (RO)
Result
5/14/2015
Result
5/24/2016
Result
5/17/2017
Result
5/9/2018
Result
5/6/2019
Result
5/12/2020
Result
5/12/2021
Result (DUP)
5/12/2021
Result
5/10/2022
Result
5/17/2023
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.000216
<
0.0003
<
0.0003
<
0.0003
<
0.0003
H
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000072
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.0001
<
0.0002
<
0.000144
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
0.00291
<
0.002
<
0.002
<
0.00144 C
<
0.002
<
0.002
<
0.002
<
0.002
H
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000072
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.00719
<
0.01
<
0.01
<
0.01
<
0.01
H
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0002
<
0.000216
<
0.0003
<
0.0003
<
0.0003
<
0.0003
H
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.000144
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000072
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
m,p-Cresol
mg/L
-
<
0.0001
<
0.00719
<
0.01
<
0.01
<
0.01
<
0.01
H
o-Cresol
mg/L
0.35
<
0.0001
<
0.00719
<
0.01
<
0.01
<
0.01
<
0.0004
H
Naphthalene
mg/L
0.14
<
0.0002
<
0.000288
<
0.0004
<
0.0004
<
0.0004
<
0.01
H
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0004
<
0.0004
<
0.000432
<
0.0006
<
0.0006
<
0.0006
<
0.0006
H
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0001
<
0.0002
<
0.000144
<
0.0002
<
0.0002
<
0.0002 B
<
0.0002
H
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
0.21 B
<
0.2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
2 B
<
2
<
2
5.2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = IEPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Taylorville, IL MGP Site
GW-12
Analyte
Unit
Remediation
Objective (RO)
Result
5/13/2015
Result
5/26/2016
Result
5/17/2017
Result
5/10/2018
Result
5/6/2019
Result
5/12/2020
Result
5/12/2021
Result
5/11/2022
Result
5/17/2023
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
H
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
H
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.000233
<
0.0003
<
0.0003
<
0.0003
H
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000055
J
<
0.000078
<
0.0001
<
0.0001
<
0.0001
H
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0002
<
0.0002
<
0.0002
H
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000056
J
<
0.000078
0.000106
<
0.0001
<
0.0001
H
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
0.000043
J
<
0.0002
<
0.000155
0.000203
<
0.0002
<
0.0002
H
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
0.000056 J
<
0.0001
<
0.0001
H
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.00155 C
<
0.002
<
0.002
0.0017
JH
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000044
J
<
0.000078
0.000056 J
<
0.0001
<
0.0001
H
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0002
<
0.0002
<
0.0002
H
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.00775
<
0.01
<
0.01
<
0.01
H
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0002
<
0.000233
<
0.0003
<
0.0003
<
0.0003
H
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.000155
<
0.0002
<
0.0002
<
0.0002
H
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0002
<
0.0002
<
0.0002
H
m,p-Cresol
mg/L
-
<
0.0001
<
0.00775
<
0.01
<
0.01
0.00097
JH
o-Cresol
mg/L
0.35
<
0.0001
<
0.00775
<
0.01
<
0.0004
<
0.0004
H
Naphthalene
mg/L
0.14
<
0.0002
<
0.00031
<
0.0004
<
0.01
<
0.01
H
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0004
<
0.0004
<
0.000465
<
0.0006
<
0.0006
<
0.0006
H
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0001
<
0.0002
<
0.000155
<
0.0002
<
0.0002
<
0.0002
H
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2 B
<
0.2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
2
B
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
0.25 J
<
2
0.18
J
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
1
B
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = IEPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Taylorville, IL MGP Site
GW-13S
Analyte
Unit
Remediation
Objective (RO)
Result
5/14/2015
Result
5/26/2016
Result
5/18/2017
Result
5/9/2018
Result
5/6/2019
Result
5/13/2020
Result
5/12/2021
Result
5/11/2022
Result -DUP
5/11/2022
Result
5/17/2023
Result-DUP
5/17/2023
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.000227
<
0.0003
<
0.0003
<
0.0003
<
0.0003
H
<
0.0003
H
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
0.00012
<
0.0001
<
0.0001
<
0.0001
<
0.000076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
0.00024
<
0.0001
<
0.0001
<
0.0001
<
0.000076
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
0.00036
<
0.0001
<
0.0001
<
0.0001
<
0.000076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
0.00056
J
<
0.00076
<
0.0001
<
0.0002
<
0.000152
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.000076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.00152 C
<
0.002
0.0015 J
<
0.002
0.0016
JH
0.00205
H
Chrysene
mg/L
0.0015
<
0.0001
0.00009
J
<
0.0001
<
0.0001
<
0.0001
<
0.000076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
0.00052
<
0.0001
<
0.0001
<
0.0001
<
0.000076
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.00758
<
0.01
<
0.01
<
0.01
<
0.01
H
<
0.01
H
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0002
<
0.000227
<
0.0003
<
0.0003
<
0.0003
<
0.0003
H
<
0.0003
H
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.000152
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
0.00053
<
0.0001
<
0.0001
<
0.0001
<
0.000076
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
m,p-Cresol
mg/L
-
<
0.0001
<
0.00758
<
0.01
<
0.01
<
0.01
<
0.01
H
<
0.01
H
o-Cresol
mg/L
0.35
<
0.0001
<
<
0.00758
<
0.01
<
0.01
<
0.01
<
0.0004
H
<
0.0004
H
Naphthalene
mg/L
0.14
<
0.0002
<
0.000303
<
0.0004
<
0.0004
<
0.0004
<
0.01
H
<
0.01
H
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0004
<
0.0004
<
0.000455
<
0.0006
<
0.0006
<
0.0006
<
0.0006
H
<
0.0006
H
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0001
<
0.0002
<
0.000152
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
B
<
0.2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
2
B
<
2
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
1
B
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = IEPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Taylorville, IL MGP Site
GW-13D
Analyte
Unit
Remediation
Objective (RO)
Result
5/14/2015
Result (DUP)
5/14/2015
Result
5/26/2016
Result
5/18/2017
Result
5/9/2018
Result
5/6/2019
Result
5/13/2020
Result
5/13/2021
Result
5/11/2022
Result
5/17/2023
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000076
<
0.0001
<
0.0001
<
0.0001
H
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000076
<
0.0001
<
0.0001
<
0.0001
H
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.000229
<
0.0003
<
0.0003
<
0.0003
H
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
0.00011
<
0.0001
<
0.0001
<
0.0001
<
0.000076
0.00007 J
<
0.0001
<
0.0001
H
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
0.00024
<
0.0001
<
0.0001
<
0.0001
<
0.000076
<
0.0002
<
0.0002
<
0.0002
H
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
0.00035
<
0.0001
<
0.0001
<
0.0001
<
0.000076
0.000102
<
0.0001
<
0.0001
H
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
0.00061 J
<
0.00076
<
0.0001
<
0.0002
<
0.000153
0.00024
<
0.0002
<
0.0002
H
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
0.00029
<
0.0001
<
0.0001
<
0.0001
<
0.000076
0.000167
<
0.0001
<
0.0001
H
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.00153 C
<
0.002
<
0.002
0.0016
JH
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000076
0.000104
<
0.0001
<
0.0001
H
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
0.0006
<
0.0001
<
0.0001
<
0.0001
<
0.000076
0.000244
<
0.0002
<
0.0002
H
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
0.0033
<
0.00763
<
0.01
<
0.01
<
0.01
H
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0002
<
0.000229
<
0.0003
<
0.0003
<
0.0003
H
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.000153
<
0.0002
<
0.0002
<
0.0002
H
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
0.00059
<
0.0001
<
0.0001
<
0.0001
<
0.000076
0.000235
<
0.0002
<
0.0002
H
m,p-Cresol
mg/L
-
<
0.0001
<
0.0001
<
0.00763
<
0.01
<
0.01
<
0.01
H
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.00763
<
0.01
<
0.01
<
0.0004
H
Naphthalene
mg/L
0.14
<
0.0002
<
0.000305
<
0.0004
<
0.0004
<
0.01
H
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0004
<
0.0004
<
0.000458
<
0.0006
<
0.0006
<
0.0006
H
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0001
<
0.0002
<
0.000153
<
0.0002
<
0.0002
<
0.0002
H
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
0.25
0.22
<
0.2 B
<
0.2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
2
B
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
1
B
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = IEPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-14
Analyte
Unit
Remediation
Objective (RO)
Result
3/3/2015
Result (DUP)
3/3/2015
Result
5/11/2015
Result
8/18/2015
Result
11/3/2015
Result
2/16/2016
Result
5/24/2016
Result
8/17/2016
Result
11/15/2016
Result
2/15/2017
Result
5/16/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.00227
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.00227
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.00227
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.00023
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.00023
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.00023
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00023
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.00023
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0018 J
0.00214
0.00952
0.00738
0.00818
0.0154
0.0316
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.00023
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.00023
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.00227
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.00023
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.00023
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.00023
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001
0.00014
<
0.00023
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.00023
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.00227
<
0.0064
0.0001 J
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.00227
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2 B
<
0.2
0.22
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
0.26 J
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-14
Analyte
Unit
Remediation
Objective (RO)
Result
8/16/2017
Result
11/21/2017
Result
2/15/2018
Result
5/7/2018
Result
8/13/2018
Result
11/7/2018
Result
2/19/2019
Result
5/8/2019
Result
8/12/2019
Result
11/12/2019
Result
2/18/2020
Acenaphthene
mg/L
0.42
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0066
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00962
<
0.006
0.0094
0.00367
0.0173
0.0126
<
0.002
<
0.002
0.00622
0.00583
0.0108
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
0.000031 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
0.000095
<
0.0001
B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Fluorene
mg/L
0.28
<
0.0021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Phenanthrene
mg/L
-
<
0.0064
0.000182
B
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
<
0.0027
<
0.0001
B
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002 B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.5
0.2 J
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.1
<
2
1.4 J
<
2
<
2
2.89
<
2 B
<
2
<
2
2.88
o-Xylene
Mg/L
-
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-14
Analyte
Unit
Remediation
Objective (RO)
Result
5/12/2020
Result
8/13/2020
Result
11/10/2020
Result
2/23/2021
Result
5/11/2021
Result
8/12/2021
Result
11/9/2021
Result
2/16/2022
Result
5/11/2022
Result
9/7/2022
Acenaphthene
mg/L
0.42
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.000217
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.000072
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.000145
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00417 C
0.0336
C
0.00766
0.00935
0.00934
0.0139
0.0200
B
0.0016 J
0.0018 J
0.00578 S
Chrysene
mg/L
0.0015
<
0.000072
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.000072
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.00725
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.000217
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.000145
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.000072
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.00725
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.00725
<
0.01
<
0.01
<
0.01
<
0.01
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.00029
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.000435
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.000145
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
0.38
J
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
0.72
J
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
0.38
J
<
2 B
1.6 J
0.49 J
<
2
2.53
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
0.36
J
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
0.19
J
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
1.1
J
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-14
Analyte
Unit
Remediation
Objective (RO)
Result
11/29/2022
Result
2/14/2023
Result
5/17/2023
Result
9/13/2023
Result
10/26/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00304
<
0.002
0.00309
0.00493
0.00216
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
0.11 J
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
0.62 J
<
2 B
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-15
Analyte
Unit
Remediation
Objective (RO)
Result
3/3/2015
Result
5/13/2015
Result
8/19/2015
Result (DUP)
8/19/2015
Result
11/3/2015
Result
2/17/2016
Result
5/25/2016
Result (DUP)
5/25/2016
Result
8/17/2016
Result
11/15/2016
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
S
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
S
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
S
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.00006 J
0.00006 J
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
S
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
S
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
S
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
S
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0012 J
0.00365
SR
0.00612
0.00583
0.00277
0.0025
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
s
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
s
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
s
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
s
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
s
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
0.00016
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
s
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
s
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
0.38 J
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
0.22 B
<
0.2 B
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
2.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
0.38 J
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-15
Analyte
Unit
Remediation
Objective (RO)
Result
2/15/2017
Result
5/16/2017
Result
8/17/2017
Result
11/22/2017
Result
2/15/2018
Result
5/8/2018
Result (DUP)
5/8/2018
Result
8/14/2018
Result
11/7/2018
Result
2/20/2019
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
0.000064
J
0.000053
J
<
0.0001
<
0.0001
S
0.000055
J
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.0001
0.000053
J
0.000076
J
0.000063
J
<
0.0001
0.000063
JS
0.000069
J
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
s
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
0.00006 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
s
0.000052
J
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
S
<
0.0001
s
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
S
<
0.0001
s
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
s
<
0.0001
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
s
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00335
0.00567
<
0.006
0.0111
0.00563
0.0109
0.00274
SR
0.0039
0.00327
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
s
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
s
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
0.00012
J
<
0.0001
<
0.0002
<
0.0002
<
0.0002
0.00015
J
<
0.0002
s
<
0.0002
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
0.000095
J
0.0001
0.000072
J
0.00011
0.000101
<
0.0001
<
0.0001
s
0.0001
J
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
R
<
0.0001
s
<
0.0001
m,p-Cresol
mg/L
-
o-Cresol
mg/L
0.35
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
0.000119
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
s
<
0.0004
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
0.0001
J
<
0.0001
0.000066
J
<
0.0001
<
0.0001
0.000143
<
0.0002
s
0.00011
BJ
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.5
<
0.5
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
0.9
<
2
<
2
0.8
J
<
2
B
<
2
<
2
1.7
J
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
1
<
1
<
1
<
1
B
<
1
<
1
<
1
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-15
Analyte
Unit
Remediation
Objective (RO)
Result
5/8/2019
Result
8/14/2019
Result
11/14/2019
Result
2/20/2020
Result
5/13/2020
Result
8/13/2020
Result
11/10/2020
Result
2/23/2021
Result
5/13/2021
Result
8/12/2021
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
0.000058
J
<
0.000074
<
0.0001
0.000081
J
<
0.0001
0.000063 J
<
0.0001
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000222
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
0.000061
J
<
0.000074
<
0.0001
0.000084
J
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
0.000078
J
<
0.000074
<
0.0001
0.000069
J
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
0.000082
J
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000075 J
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000148
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.014
0.00331
0.00802
<
0.002
<
0.00148 C
<
0.002
C
<
0.002
C
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.00741
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000222
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000148
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
0.000085
J
<
0.000074
0.000074
J
<
0.0001
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.00741
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.00741
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000296
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.000444
<
0.0006
<
0.0006
<
0.0006
R
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000148
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
1.6 J
1.7
J
<
2
<
2
<
2
B
1.1
J
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-15
Analyte
Unit
Remediation
Objective (RO)
Result
11/9/2021
Result
2/17/2022
Result - DUP
2/17/2022
Result
5/11/2022
Result
9/9/2022
Result
11/29/2022
Result
2/15/2023
Result - DUP
2/15/2023
Result
5/18/2023
Result - DUP
5/18/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000094 J
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
0.000074 J
<
0.0001
0.000077 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
H
<
0.0003
H
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
B
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
H
<
0.002
H
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
H
<
0.0001
H
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
H
<
0.01
H
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
H
<
0.0003
H
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000287
<
0.0002
0.0001 J
0.000204
H
<
0.0002
H
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
H
<
0.01
H
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0004
H
<
0.0004
H
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
0.00366
0.00414
<
0.0004
<
0.0004
<
0.01
H
<
0.01
H
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
H
<
0.0006
H
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
H
<
0.0002
H
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
0.16
J
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
0.43
J
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
1.6
J
<
2
<
2
<
2
<
2
0.55 J
<
2 B
<
2 B
<
2
<
2
o-Xylene
Mg/L
-
0.13
J
<
1
<
1
<
1
0.11 J
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
0.56
J
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
GW-15
Remediation
Result
Result
Analyte
Unit
Objective (RO)
9/13/2023
10/25/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002 S
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Taylorville, IL MGP Site
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-16S
Analyte
Unit
Remediation
Objective (RO)
Result
3/2/2015
Result
5/12/2015
Result
8/18/2015
Result
11/2/2015
Result
2/17/2016
Result
5/24/2016
Result
8/16/2016
Result
11/15/2016
Result
2/14/2017
Result
5/15/2017
Result
8/16/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
0.00264
0.00446
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
0.00017 J
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2 B
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
0.62
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-16S
Analyte
Unit
Remediation
Objective (RO)
Result
11/20/2017
Result
2/14/2018
Result
5/7/2018
Result
8/14/2018
Result
11/6/2018
Result
2/18/2019
Result
5/7/2019
Result
8/12/2019
Result
11/11/2019
Result
2/18/2020
Result
5/11/2020
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000076
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000076
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000227
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000076
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000076
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000076
Benzo(g,h,i)perylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000152
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000076
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.006
0.0446
0.0293
0.0142
<
0.002
0.00774
0.00353
0.012
0.00454
0.0327
0.00207 C
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000076
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000076
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.00758
Fluoranthene
mg/L
0.28
<
0.0001
B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000273
<
0.0002
<
0.000227
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000152
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000076
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.00758
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.00758
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000303
Phenanthrene
mg/L
-
0.000133
B
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.000455
Pyrene
mg/L
0.21
<
0.0001
B
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002 B
<
0.0002
<
0.0002
0.00011 J
<
0.0002
<
0.000152
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.5
0.34 J
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.1
<
2
0.7 J
<
2
<
2
<
2
<
2 B
<
2
1 J
1.1 J
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
1
<
1
<
1
<
1
<
1
<
1
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-16S
Analyte
Unit
Remediation
Objective (RO)
Result
8/12/2020
Result
11/9/2020
Result
2/22/2021
Result
5/10/2021
Result
8/10/2021
Result
11/8/2021
Result
2/15/2022
Result
5/9/2022
Result
9/6/2022
Result
11/28/2022
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000076 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00771 C
0.00589
<
0.002
0.00203
0.0068
0.0016
J
0.0016 J
0.0019
J
0.0024
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
0.00057
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000992
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
Naphthalene
mg/L
0.14
0.00164
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
0.00255
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000486
<
0.0002
<
0.0002
<
0.0002
B
<
0.0002
<
0.0002
<
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
0.16
J
<
1
<
1
<
1
<
1
<
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
0.49
J
<
1
<
1
<
1
<
1
<
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
Naphthalene
Mg/L
140
<
2
<
2 B
0.43 J
<
2
<
2
1.2
J
<
2
<
2
<
2
0.52 J
<
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
0.12
J
<
1
<
1
<
1
<
1
<
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
0.61
J
<
2
<
2
<
2
<
2
<
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
GW-16S
Analyte
Unit
Remediation
Objective (RO)
Result
2/13/2023
Result
5/15/2023
Result
9/14/2023
Result
10/25/2023
Acenaphthene
mg/L
0.42
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0019 J
<
0.002
0.0017 J
0.00426
Chrysene
mg/L
0.0015
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
2 B
<
2
<
2
<
2
o-Xylene
Mg/L
-
1
<
1
<
1
<
1
Toluene
Mg/L
1000
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-16D
Analyte
Unit
Remediation
Objective (RO)
Result
3/2/2015
Result
5/11/2015
Result
5/11/2015
Result
8/17/2015
Result
11/2/2015
Result
2/17/2016
Result
5/24/2016
Result
8/16/2016
Result
11/14/2016
Result
2/14/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.00263
<
0.00263
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.00263
<
0.00263
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.00263
<
0.00263
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.00026
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.00026
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.00026
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00026
<
0.00026
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.00026
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00272
0.0095
0.0095
0.0031
0.00294
0.00425
Chrysene
mg/L
0.0015
<
0.0001
<
0.00026
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.00026
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.00263
<
0.00263
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.00026
<
0.00026
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.00026
<
0.00026
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.00026
<
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001
<
0.00026
<
0.00026
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.00026
<
0.00026
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.00263
<
0.00263
<
0.0064
0.00011 J
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.00263
<
0.00263
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
B
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
0.89 J
0.95 J
0.95 J
0.99 J
1.2 J
0.88 J
0.57
J
0.44 J
0.51 J
0.44 J
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-16D
Analyte
Unit
Remediation
Objective (RO)
Result
5/15/2017
Result
8/16/2017
Result
11/20/2017
Result
2/14/2018
Result (DUP)
2/14/2018
Result
5/7/2018
Result
8/14/2018
Result
11/6/2018
Result
2/18/2019
Result
5/7/2019
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0066
0.00032
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0138
0.0019
J
<
0.008
0.00465
0.0438
0.00939
0.0035
0.00566
0.00573
<
0.01
S
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
0.00021
J
<
0.0001
B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
o-Cresol
mg/L
0.35
Naphthalene
mg/L
0.14
<
0.0002
Phenanthrene
mg/L
-
0.00011 J
<
0.0064
0.000124
B
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
<
0.0027
0.00011
J
<
0.0001
B
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
B
<
0.0002
Benzene
|jg/L
5.0
<
2
<
2
<
0.5
<
0.5
0.23
J
0.22 J
0.41 J
0.56
0.71
0.71
Bromoform
ijg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
ijg/L
700
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
ijg/L
-
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.2
J
Methylene chloride
ijg/L
5.0
<
0.2
<
0.2
<
0.5
<
0.5
0.22
J
<
2
<
2
<
2
<
2
<
2
Naphthalene
ijg/L
140
<
0.6
<
0.6
<
0.1
<
2
<
2
<
2
<
2
<
2
0.81
J
0.48
J
o-Xylene
ijg/L
-
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
ijg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.12
J
trans-1,2-Dichloroethene
ijg/L
100
0.67 J
0.8
J
<
2
0.56 J
0.53
J
<
2
0.39 J
0.3 J
<
2
0.13
J
Xylenes, Total
ijg/L
10000
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
[jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
GW-16D
Analyte
Unit
Remediation
Objective (RO)
Result (DUP)
5/7/2019
Result
8/12/2019
Result
11/12/2019
Result
2/18/2020
Result
5/11/2020
Result
8/12/2020
Result
11/9/2020
Result
2/22/2021
Result
5/10/2021
Result
8/10/2021
Result
11/8/2021
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000222
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000076 J
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000148
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00421
0.0141
<
0.002
<
0.002
0.012 C
0.00595 C
0.011
C
0.005
0.002 J
0.00206
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.00741
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000222
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000148
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.00741
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.00741
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000296
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.000444
<
0.0006
<
0.0006
0.00101
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000148
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
0.77
0.3 J
0.11 J
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
0.15 J
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.16 J
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.52 J
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2 B
<
2
0.79 J
0.83 J
<
2
<
2
<
2
B
0.34 J
<
2
<
2
0.92 J
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.13 J
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.65 J
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-16D
Analyte
Unit
Remediation
Objective (RO)
Result
2/15/2022
Result
5/9/2022
Result
9/6/2022
Result
11/28/2022
Result
2/13/2023
Result
5/15/2023
Result
9/14/2023
Result
10/25/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
0.0016 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
0.00299
0.0017 J
<
0.002
<
0.002
0.0017 J
0.00241
0.00726
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
0.38
J
0.52
0.71
0.7
0.80
0.76
0.64
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
0.51 J
<
2 B
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
0.13 J
<
2
0.1 J
0.12 J
<
2
0.13 J
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-17
Analyte
Unit
Remediation
Objective (RO)
Result
3/2/2015
Result
5/12/2015
Result
8/18/2015
Result
11/2/2015
Result
2/17/2016
Result
5/24/2016
Result
8/16/2016
Result
11/15/2016
Result
2/14/2017
Result
5/15/2017
Result
8/16/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
0.00225
0.00328
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
0.0001 J
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
0.98 B
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
0.5 J
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-17
Analyte
Unit
Remediation
Objective (RO)
Result
11/20/2017
Result
2/14/2018
Result
5/7/2018
Result
8/14/2018
Result
11/6/2018
Result
2/18/2019
Result
5/7/2019
Result
8/12/2019
Result
11/12/2019
Result
2/18/2020
Result
5/12/2020
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000115
<
0.000231
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000055 J
<
0.000077
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Benzo(g,h,i)perylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000154
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.006
<
0.002
0.00742
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
0.00215
0.00257 C
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000047 J
<
0.000077
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.00769
Fluoranthene
mg/L
0.28
<
0.0001
B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000288
<
0.000231
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000154
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.00769
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.00769
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000308
Phenanthrene
mg/L
-
0.00011
B
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.000462
Pyrene
mg/L
0.21
<
0.0001
B
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
B
<
0.0002
<
0.0002
<
0.0002
0.00023
<
0.000154
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.5
0.48 J
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.1
<
2
<
2
<
2
<
2
0.61
J
<
2 B
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
1
<
1
<
1
<
1
<
1
<
1
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-17
Analyte
Unit
Remediation
Objective (RO)
Result
8/12/2020
Result
11/11/2020
Result
2/22/2021
Result
5/10/2021
Result
8/10/2021
Result
11/8/2021
Result
2/15/2022
Result
5/9/2022
Result
9/6/2022
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000074 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00467
C
<
0.002
C
0.0029
<
0.002
0.00739
<
0.002
<
0.002
<
0.002
0.00752
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
0.000078
J
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
<
0.0002
Benzene
|jg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
ijg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
ijg/L
700
<
1
<
1
<
1
<
1
<
1
0.12
J
<
1
<
1
<
1
m,p-Xylenes
ijg/L
-
<
1
<
1
<
1
<
1
<
1
0.53
J
<
1
<
1
<
1
Methylene chloride
ijg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
ijg/L
140
<
2
<
2
B
0.38 J
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
ijg/L
-
<
1
<
1
<
1
<
1
<
1
0.12
J
<
1
<
1
<
1
Toluene
ijg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
ijg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
ijg/L
10000
<
2
<
2
<
2
<
2
<
2
0.65
J
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
[jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-17
Analyte
Unit
Remediation
Objective (RO)
Result
11/28/2022
Result
2/13/2023
Result
5/15/2023
Result
9/14/2023
Result
10/25/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
0.0144
<
0.002
0.0019 J
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
0.49 J
<
2 B
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
GW-18S
Analyte
Unit
Remediation
Objective (RO)
Result
3/4/2015
Result
5/12/2015
Result
8/19/2015
Result
11/4/2015
Result
2/18/2016
Result
5/25/2016
Result
8/18/2016
Result
11/16/2016
Result
2/16/2017
Result
5/17/2017
Result
8/18/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0011
J
<
0.002
0.00211
0.0014 J
0.0013 J
0.00827
0.0015 J
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
0.000092 J
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001
B
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
0.2 B
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
0.94
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-18S
Analyte
Unit
Remediation
Objective (RO)
Result
11/21/2017
Result
2/15/2018
Result
5/8/2018
Result
8/14/2018
Result
11/8/2018
Result
2/19/2019
Result
5/7/2019
Result
8/13/2019
Result
11/12/2019
Result
2/19/2020
Result
5/13/2020
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000114
<
0.000234
Benzo(a)anthracene
mg/L
0.00013
0.000118
S
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000054 J
<
0.0001
<
0.000078
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
s
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.005
<
0.0001
<
0.000078
Benzo(b)fluoranthene
mg/L
0.00018
0.000132
s
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.005
<
0.0001
<
0.000078
Benzo(g,h,i)perylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.01
<
0.0002
<
0.000156
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.005
<
0.0001
<
0.000078
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.006
s
0.00347
0.00327
<
0.002
<
0.002
0.00433
0.00229
0.00265
0.0037
0.0118
0.00309
Chrysene
mg/L
0.0015
<
0.0001
s
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000051 J
<
0.0001
<
0.000078
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.005
<
0.0001
<
0.000078
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.00781
Fluoranthene
mg/L
0.28
<
0.0001
s
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000234
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000156
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
0.000143
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.005
<
0.0001
<
0.000078
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.00781
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.00781
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000312
Phenanthrene
mg/L
-
<
0.0001
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.000469
Pyrene
mg/L
0.21
<
0.0001
s
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
B
<
0.0002
<
0.0002
<
0.0002
0.00011 J
<
0.000156
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.5
<
0.5
<
2
<
2
<
2
<
2
<
2
0.94 J
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
<
2
0.52
J
<
2
<
2
<
2
0.52 J
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
1
<
1
<
1
<
1
<
1
<
1
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-18S
Analyte
Unit
Remediation
Objective (RO)
Result
8/14/2020
Result
11/11/2020
Result
2/23/2021
Result
5/11/2021
Result
8/11/2021
Result
11/10/2021
Result - DUP
11/10/2021
Result
2/16/2022
Result
5/9/2022
Result
9/7/2022
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
B
<
0.0003
B
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000071 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00244
C
0.00299
0.00249
0.00329
<
0.002
0.00305
<
0.002
<
0.002
<
0.002
0.00228
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
0.00007
J
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
B
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
0.11
J
0.13
J
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
0.39
J
0.45
J
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2 B
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
0.11
J
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.13
J
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
0.39
J
0.56
J
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-18S
Analyte
Unit
Remediation
Objective (RO)
Result
11/29/2022
Result
2/14/2023
Result
5/16/2023
Result
9/14/2023
Result
10/26/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
0.00331
0.00295
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
0.48 J
<
2 B
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-18D
Analyte
Unit
Remediation
Objective (RO)
Result
3/4/2015
Result
5/12/2015
Result (DUP)
5/12/2015
Result
8/19/2015
Result
11/4/2015
Result
2/18/2016
Result (DUP)
2/18/2016
Result
5/25/2016
Result
8/18/2016
Result
11/16/2016
Result
2/16/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0014
J
0.0014 J
0.0033
0.003
0.0019 J
0.00201
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001
B
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
0.21 B
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
5.63
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
0.3 J
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-18D
Analyte
Unit
Remediation
Objective (RO)
Result
5/17/2017
Result
8/18/2017
Result
11/21/2017
Result (DUP)
11/21/2017
Result
2/15/2018
Result
5/8/2018
Result
8/14/2018
Result
11/8/2018
Result
2/19/2019
Result
5/7/2019
Result
8/13/2019
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.00111
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00679
0.00472
<
0.006
<
0.006
0.00371
0.00222
0.00371
<
0.002
<
0.002
<
0.0111
0.00517
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.01
Fluoranthene
mg/L
0.28
<
0.0021
0.00015 J
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.00111
<
0.0002
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000556
<
0.0001
m,p-Cresol
mg/L
-
<
0.01
o-Cresol
mg/L
0.35
<
0.01
Naphthalene
mg/L
0.14
<
0.00111
<
0.0002
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0001
0.000108
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.00222
<
0.0004
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
B
<
0.00111
<
0.0002
Benzene
Mg/L
5.0
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
0.13 J
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.5
<
0.5
<
0.5
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
2
<
2
<
2
<
2
<
2
0.25 J
0.4
J
0.42 J
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-18D
Analyte
Unit
Remediation
Objective (RO)
Result
11/12/2019
Result
2/19/2020
Result
5/13/2020
Result
8/14/2020
Result
11/11/2020
Result
2/23/2021
Result (DUP)
2/23/2021
Result
5/11/2021
Result
8/11/2021
Result
11/10/2021
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.000233
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003 B
Benzo(a)anthracene
mg/L
0.00013
<
0.005
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.005
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.005
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.01
<
0.0002
<
0.000155
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.005
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.1
0.00559
<
0.00155 C
<
0.002
C
0.00331
<
0.002
0.0019 J
0.00269
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.005
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.005
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.00775
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
<
0.0002
<
0.000233
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.000155
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.005
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.00775
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.00775
<
0.01
<
0.0004
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.00031
<
0.0004
<
0.01
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.000465
<
0.0006
<
0.0006
<
0.0006
0.00185
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.000155
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.13 J
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.41 J
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
0.45 J
<
2
<
2
<
2 B
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.13 J
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
0.32 J
0.21 J
<
2
0.13
J
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.54 J
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-18D
Analyte
Unit
Remediation
Objective (RO)
Result
2/16/2022
Result
5/9/2022
Result
9/7/2022
Result
11/29/2022
Result
2/14/2023
Result
5/16/2023
Result
9/14/2023
Result
10/26/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
0.00295
0.00284
<
0.002
<
0.002
0.0015 J
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002 B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
0.54 J
<
2 B
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
0.12 J
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-19S
Analyte
Unit
Remediation
Objective (RO)
Result
3/4/2015
Result
5/11/2015
Result
8/20/2015
Result
11/4/2015
Result
2/18/2016
Result
5/25/2016
Result
8/18/2016
Result
11/16/2016
Result
2/16/2017
Result
5/17/2017
Result
8/18/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.00714
H
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0002
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.00714
H
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0002
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.00071
H
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0002
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.00071
H
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.00071
H
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.00071
H
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00071
H
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.0002
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.00071
H
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00595
0.0304
H
0.00871
0.00222
0.00259
0.0109
0.00473
Chrysene
mg/L
0.0015
<
0.0001
<
0.00071
H
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.00071
H
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
0.00079
H
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0002
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.00071
H
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.00071
H
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.00071
H
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001 B
<
0.00071
H
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.00071
H
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.00071
H
<
0.0064
0.0001 J
0.00012 J
<
0.0064
<
0.0064
<
0.0002
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.00071
H
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0002
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2 B
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
0.45
J
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-19S
Analyte
Unit
Remediation
Objective (RO)
Result (DUP)
8/18/2017
Result
11/21/2017
Result
2/15/2018
Result
5/8/2018
Result
8/14/2018
Result
11/8/2018
Result
2/19/2019
Result (DUP)
2/19/2019
Result
5/7/2019
Result
8/13/2019
Result
11/13/2019
Acenaphthene
mg/L
0.42
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0066
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000054
J
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000071
J
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000051 J
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00579
<
0.006
0.0013 J
0.00502
0.0149
<
0.002
0.0146
0.00315
0.00632
0.0342
0.002
J
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000058
J
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0021
0.000112
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Fluorene
mg/L
0.28
<
0.0021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.0002
Phenanthrene
mg/L
-
<
0.0064
0.000175
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
<
0.0027
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
B
<
0.0002
B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.5
<
0.5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
2
<
2
<
2
<
2
<
2
0.41
J
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
2
<
2
<
2
0.1 J
0.11
J
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-19S
Analyte
Unit
Remediation
Objective (RO)
Result
2/19/2020
Result
5/13/2020
Result
8/13/2020
Result
11/10/2020
Result
2/23/2021
Result
5/11/2021
Result
8/11/2021
Result
11/10/2021
Result
2/16/2022
Result- DUP
2/16/2022
Acenaphthene
mg/L
0.42
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0001
<
0.000234
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
B
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.000156
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.00156 C
<
0.002 C
<
0.002 C
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.00781
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
<
0.000234
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
<
0.000156
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.00781
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.00781
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.000312
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0004
<
0.000469
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.000156
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.15
J
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.5
J
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
0.39 J
<
2
<
2
<
2 B
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.11
J
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.61
J
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-19S
Analyte
Unit
Remediation
Objective (RO)
Result
5/9/2022
Result
9/7/2022
Result
11/29/2022
Result - DUP
11/29/2022
Result
2/14/2023
Result - DUP
2/14/2023
Result
5/16/2023
Result
9/14/2023
Result
10/26/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
0.00238
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002 B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
0.5 J
0.46 BJ
<
2 B
<
2 B
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-19D
Remediation
Result
Result
Result
Result
Result
Result
Result
Result
Result
Result
Result
Result
Analyte
Unit
Objective (RO)
3/4/2015
5/11/2015
8/20/2015
11/4/2015
2/18/2016
5/25/2016
8/18/2016
11/16/2016
2/16/2017
5/17/2017
8/18/2017
11/21/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00207
0.00262
0.0023
0.0019 J
<
0.002
0.00452
0.00917
0.00917
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
0.00051 B
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
0.00021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2 B
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
0.27 J
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-19D
Analyte
Unit
Remediation
Objective (RO)
Result
2/15/2018
Result
5/8/2018
Result
8/14/2018
Result
11/8/2018
Result
2/19/2019
Result
5/7/2019
Result
8/13/2019
Result
11/12/2019
Result
2/19/2020
Result
5/13/2020
Result - DUP
5/13/2020
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.000073
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.000073
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000213
<
0.000219
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.000073
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.000073
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.000073
Benzo(g,h,i)perylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000142
<
0.000146
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.000073
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00664
0.00352
0.00794
<
0.002
0.0019 J
0.00434
0.0232
0.00425
<
0.002
<
0.00142 C
<
0.00146 C
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.000073
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.000073
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.00709
<
0.0073
Fluoranthene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000213
<
0.000219
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000142
<
0.000146
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.000073
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.00709
<
0.0073
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.00709
<
0.0073
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000284
<
0.000292
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.000426
<
0.000438
Pyrene
mg/L
0.21
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000142
<
0.000146
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
0.37 J
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
1
<
1
<
1
<
1
<
1
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-19D
Analyte
Unit
Remediation
Objective (RO)
Result
8/13/2020
Result
11/10/2020
Result - DUP
11/10/2020
Result
2/23/2021
Result
5/11/2021
Result
8/11/2021
Result
11/10/2021
Result
2/16/2022
Result
5/9/2022
Result
9/7/2022
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
B
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
C
<
0.002
C
<
0.002 C
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
0.00391
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
B
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
0.13
J
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
0.5
J
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
0.32
J
<
2
B
<
2 B
<
2
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
0.12
J
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.12
J
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
0.62
J
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-19D
Analyte
Unit
Remediation
Objective (RO)
Result
11/29/2022
Result
2/14/2023
Result
5/16/2023
Result
9/14/2023
Result
10/26/2023
Acenaphthene
mg/L
0.42
<
0.0001
0.000159
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
0.47 BJ
<
2 B
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-20
Analyte
Unit
Remediation
Objective (RO)
Result
3/5/2015
Result (DUP)
3/5/2015
Result
5/11/2015
Result
8/20/2015
Result
11/4/2015
Result
2/18/2016
Result
5/27/2016
Result
8/18/2016
Result
11/16/2016
Result
2/16/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
0.00009
J
0.00016
<
0.0001
<
0.0001
0.00008 J
<
0.0001
0.00009
J
0.00007 J
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
0.00024
0.00026
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.0001
J
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
0.00019
0.00022
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
0.00024
J
0.00024
J
<
0.00076
<
0.00076
<
0.00076
<
0.00076
0.00012
J
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
0.00011
J
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
0.00015
0.00016
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001 B
<
0.0001 B
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
0.0001
J
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
0.00014
J
0.00019
J
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
0.45
J
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-20
Analyte
Unit
Remediation
Objective (RO)
Result
5/17/2017
Result
8/18/2017
Result
11/21/2017
Result
2/15/2018
Result
5/10/2018
Result
8/14/2018
Result
11/8/2018
Result
2/19/2019
Result
5/7/2019
Result
8/13/2019
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.0001
<
0.0001
0.00007
J
0.000184
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
0.000058
J
0.000086
J
0.000146
<
0.0001
<
0.0001
<
0.0001
0.000053
J
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
0.000214
0.000089
J
0.000178
0.000471
<
0.0001
0.000052 J
<
0.0001
0.000082
J
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
0.000205
0.000074
J
0.000128
0.000364
<
0.0001
<
0.0001
<
0.0001
0.00007
J
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
0.000186
0.000138
0.000224
0.000513
<
0.0001
0.000076 J
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000064
J
0.000163
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
0.000108
<
0.0001
0.000055
J
0.000223
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000075 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.01
Fluoranthene
mg/L
0.28
<
0.0021
0.000094
J
0.000165
<
0.0002
<
0.0002
0.00017 J
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
0.000321
0.000096
J
0.000244
0.000536
<
0.0001
<
0.0001
<
0.0001
0.0001
m,p-Cresol
mg/L
-
<
0.01
o-Cresol
mg/L
0.35
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
Phenanthrene
mg/L
-
<
0.0064
0.00014
BJ
0.000205
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
<
0.0027
0.000097
J
0.00018
0.000056
J
0.000135
0.000336
<
0.0002
<
0.0002
<
0.0002
0.00019
J
Benzene
Mg/L
5.0
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.5
<
0.5
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-20
Analyte
Unit
Remediation
Objective (RO)
Result
11/14/2019
Result
2/19/2020
Result
5/13/2020
Result
8/14/2020
Result
11/10/2020
Result
2/23/2021
Result
5/11/2021
Result (DUP)
5/11/2021
Result
8/11/2021
Result
11/10/2021
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
0.000111
<
0.0001
0.000106
0.000139
0.000155
0.000075 J
0.000330
0.000509
0.000498
0.000229
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.000231
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
B
Benzo(a)anthracene
mg/L
0.00013
0.000087
J
<
0.0001
0.000129
0.000195
0.000141
<
0.000100
0.000388
0.000671
0.000565
0.000316
Benzo(a)pyrene
mg/L
0.0002
0.000249
0.000107
0.000337
0.000648
0.000505
0.000238
0.001350
0.002230
0.00193
0.000893
Benzo(b)fluoranthene
mg/L
0.00018
0.000214
0.000138
0.000283
0.000586
0.000342
0.000174
0.001070
0.001840
0.00173
0.000825
Benzo(g,h,i)perylene
mg/L
-
0.000279
0.00017 J
0.000366
0.000805
0.000547
0.000243
0.001290
0.001970
0.00203
0.000894
Benzo(k)fluoranthene
mg/L
0.00017
0.000055
J
<
0.0001
0.000099
0.000147
0.000085
J
<
0.000100
0.000302
0.000497
0.000521
0.00017
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.00154 C
<
0.002 C
<
0.002
C
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
0.000109
<
0.0001
0.00013
0.000245
0.000183
0.000073 J
0.000548
0.000921
0.000754
0.000398
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.000077
0.000138
0.00008
J
<
0.0002
0.00018 J
0.000294
0.000376
0.00012
J
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.00769
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
<
0.0002
<
0.000231
<
0.0003
<
0.0003
<
0.0003
0.000342
0.000652
0.000616
0.000316
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.000154
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
0.000197
0.000148
0.000251
0.000537
0.000319
<
0.000200
0.000892
0.001470
0.0014
0.000611
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.00769
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.00769
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.000308
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.000462
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
0.00016
J
<
0.0002
0.000239
0.000248
0.000328
<
0.000200
0.000845
0.001510
0.00127
0.000613
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.12
J
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.47
J
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
<
2
B
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.47
J
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-20
Analyte
Unit
Remediation
Objective (RO)
Result
2/16/2022
Result
5/9/2022
Result
9/7/2022
Result
11/29/2022
Result
2/14/2023
Result
5/16/2023
Result
9/14/2023
Result
10/26/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
0.00062
0.00008
J
0.0007
0.000363
0.00067
0.000178
0.000635
0.000198
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
0.000693
0.000088
J
0.000921
0.00046
0.00065
0.000155
0.000976
0.000314
Benzo(a)pyrene
mg/L
0.0002
0.00224
0.000337
0.00271
0.00167
0.00282
0.000684
0.00315
0.00111
Benzo(b)fluoranthene
mg/L
0.00018
0.00198
0.000258
0.0024
0.00128
0.0022
0.000434
0.00269
0.000961
Benzo(g,h,i)perylene
mg/L
-
0.00219
0.000441
0.00283
0.00159
0.00261
0.000745
0.00324
0.00112
Benzo(k)fluoranthene
mg/L
0.00017
0.000629
0.00008
J
0.000695
0.000393
0.000508
0.000161
0.000771
0.000288
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
0.0016 J
<
0.002
<
0.002
<
0.002
0.0016 J
<
0.002
Chrysene
mg/L
0.0015
0.000937
0.000151
0.00118
0.000604
0.000941
0.000223
0.00131
0.000468
Dibenzo(a,h)anthracene
mg/L
0.0003
0.000408
<
0.0002
0.00049
0.00023
0.000475
0.00012 J
0.000681
0.00016
J
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
0.00069
<
0.0003
0.001
0.000582
0.000576
<
0.0003
0.00107
0.000333
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
0.00161
0.000345
0.00202
0.00107
0.00178
0.000442
0.00234
0.000712
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.0004
<
0.0004
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.01
<
0.01
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
0.00156
0.000208
B
0.00197
0.00112
0.00123
0.000362
0.00227
0.000534
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
0.47 BJ
<
2
B
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
0.16
J
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
0.48 J
0.52
J
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-21
Analyte
Unit
Remediation
Objective (RO)
Result
3/5/2015
Result
5/13/2015
Result
8/20/2015
Result (DUP)
8/20/2015
Result
11/4/2015
Result
2/18/2016
Result
5/26/2016
Result
8/18/2016
Result
11/16/2016
Result
2/15/2017
Result (DUP)
2/15/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.00006 J
0.00007 J
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00384
<
0.002
0.00837
0.00812
0.001 J
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.0001 B
0.00022
0.00015
0.00016
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
0.00019
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
0.35 J
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2 B
<
0.2
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
2.51
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
0.43 J
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
0.35 J
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-21
Analyte
Unit
Remediation
Objective (RO)
Result
5/17/2017
Result
8/17/2017
Result
11/21/2017
Result
2/14/2018
Result
5/10/2018
Result
8/13/2018
Result
11/8/2018
Result
2/19/2019
Result
5/7/2019
Result
8/14/2019
Result
11/13/2019
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
0.00016
J
<
0.0066
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000054
J
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.00006
J
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000054
J
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0019
J
0.0015 J
<
0.006
0.0013 J
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000043
J
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
0.00015
J
<
0.0021
0.000107
B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Fluorene
mg/L
0.28
0.00011
J
<
0.0021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.0002
Phenanthrene
mg/L
-
0.00018
J
<
0.0064
0.000214
B
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
0.00012
J
<
0.0027
<
0.0001
B
0.000041 J
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.5
<
0.5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.1
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-21
Analyte
Unit
Remediation
Objective (RO)
Result
2/20/2020
Result
5/12/2020
Result
8/14/2020
Result
11/11/2020
Result
2/24/2021
Result
5/12/2021
Result
8/11/2021
Result
11/9/2021
Result
2/16/2022
Result
5/11/2022
Acenaphthene
mg/L
0.42
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0001
<
0.000214
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.000071
0.000072
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.000071
0.00007
J
<
0.0001
<
0.0002
<
0.0002
0.00012 J
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
0.000069 J
<
0.000071
0.000123
0.000074
J
<
0.000100
<
0.000100
0.000132
<
0.0001
0.000076
J
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.000143
0.0001
J
0.000054
J
<
0.000200
<
0.000200
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000052
J
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.00143 C
0.00271
C
<
0.002
C
<
0.002
<
0.002
<
0.002
<
0.002
B
0.00212
0.0016 J
Chrysene
mg/L
0.0015
<
0.0001
<
0.000071
0.000071
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000067
J
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.00714
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
<
0.000214
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
<
0.000143
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
0.000087 J
<
0.000071
0.000126
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.00714
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.00714
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0004
Naphthalene
mg/L
0.14
<
0.0002
<
0.000286
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.01
Phenanthrene
mg/L
-
<
0.0004
<
0.000429
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.000143
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.00018
J
<
0.0002 B
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.12
J
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.47
J
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
B
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.1
J
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
0.43 J
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.57
J
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-21
Analyte
Unit
Remediation
Objective (RO)
Result
9/7/2022
Result
11/29/2022
Result
2/14/2023
Result
5/17/2023
Result
9/15/2023
Result
10/27/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
0.000109
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000143
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000056 J
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
0.0015 J
0.0017
J
<
0.002
<
0.002
0.00222
Chrysene
mg/L
0.0015
0.000052
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000089 J
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.0004
<
0.0004
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.01
<
0.01
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2 B
<
2
B
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-22S
Analyte
Unit
Remediation
Objective (RO)
Result
3/3/2015
Result
5/12/2015
Result
8/18/2015
Result
11/3/2015
Result
2/17/2016
Result
5/25/2016
Result
8/17/2016
Result
11/15/2016
Result
2/15/2017
Result
5/16/2017
Result
8/17/2017
Result
11/22/2017
Acenaphthene
mg/L
0.42
<
0.0208
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
Acenaphthylene
mg/L
-
<
0.0208
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
Anthracene
mg/L
2.1
<
0.0138
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.00021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.00021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.00021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00158
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.0001
Benzo(k)fluoranthene
mg/L
0.00017
<
0.00021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.00417
<
0.002
0.0013 J
<
0.002
<
0.002
0.0015 J
0.00399
<
0.006
Chrysene
mg/L
0.0015
<
0.00021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.00021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.00688
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.00438
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
0.0001
<
0.0001
Fluorene
mg/L
0.28
<
0.00438
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.00021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
0.00031
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.00021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0133
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
0.000134
Pyrene
mg/L
0.21
<
0.00562
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0001
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2 B
<
0.2
0.29
<
0.2
<
0.2
<
0.2
<
0.5
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
0.52 J
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
0.27 J
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
1
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-22S
Analyte
Unit
Remediation
Objective (RO)
Result
2/14/2018
Result
5/8/2018
Result
8/14/2018
Result (DUP)
8/14/2018
Result
11/7/2018
Result
2/20/2019
Result
5/8/2019
Result
8/14/2019
Result
11/13/2019
Result
2/20/2020
Result
5/14/2020
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Anthracene
mg/L
2.1
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000637
<
0.000231
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000088
J
<
0.000077
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000061
J
<
0.000077
Benzo(g,h,i)perylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.000154
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0017 J
0.00445
0.00264
0.00477
<
0.002
<
0.002
0.00455
<
0.002
<
0.002
<
0.002
0.00191 C
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000084
J
<
0.000077
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000077
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.00769
Fluoranthene
mg/L
0.28
<
0.0002
<
0.0002
0.00015 J
<
0.0002
0.00015 J
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000524
<
0.000231
Fluorene
mg/L
0.28
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000154
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000093
J
<
0.000077
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.00769
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.00769
Naphthalene
mg/L
0.14
0.000203
<
0.0002
<
0.0002
<
0.0002
<
0.000308
Phenanthrene
mg/L
-
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
0.000695
<
0.000462
Pyrene
mg/L
0.21
0.000035
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000449
<
0.000154
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
<
2
<
2
0.5 J
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
1
<
1
<
1
<
1
<
1
<
1
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-22S
Analyte
Unit
Remediation
Objective (RO)
Result - DUP
5/14/2020
Result
8/13/2020
Result
11/9/2020
Result
2/22/2021
Result
5/12/2021
Result
8/11/2021
Result - DUP
8/11/2021
Result
11/9/2021
Result - DUP
11/9/2021
Result
2/16/2022
Result
5/10/2022
Acenaphthene
mg/L
0.42
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000068 J
<
0.0001
Anthracene
mg/L
2.1
<
0.000231
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.000077
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000071 J
0.00007 J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.000154
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.00154 C
0.00279 C
0.00517
0.0017 J
0.00472
0.00983
0.00753
<
0.002
B
0.0016
BJ
<
0.002
0.00347
Chrysene
mg/L
0.0015
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.000077
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.00769
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.000231
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.000154
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.000077
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.00769
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.00769
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.000308
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.000462
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.000154
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
0.14
J
<
1
<
1
<
1
0.11
J
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
0.2
J
<
1
<
1
0.39
J
0.47
J
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2 B
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
0.13
J
<
1
<
1
<
1
0.11
J
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.12 J
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
0.33
J
<
2
<
2
0.39
J
0.58
J
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-22S
Analyte
Unit
Remediation
Objective (RO)
Result
9/7/2022
Result
11/29/2022
Result
2/14/2023
Result
5/16/2023
Result
9/14/2023
Result
10/26/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
0.0019 J
0.0038
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.0004
<
0.0004
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.01
<
0.01
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
0.47 BJ
<
2
B
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
0.22 J
0.25
J
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-22D
Analyte
Unit
Remediation
Objective (RO)
Result
3/3/2015
Result
5/12/2015
Result
8/18/2015
Result
11/3/2015
Result
2/17/2016
Result
5/25/2016
Result
8/16/2016
Result
11/15/2016
Result
2/15/2017
Result
5/16/2017
Result
8/17/2017
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.00006 J
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0029
0.00494
0.00646
0.00803
0.0011 J
0.00298
0.00913
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
0.00014
<
0.0001
<
0.0001
<
0.0001
<
0.0001
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Naphthalene
mg/L
0.14
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2 B
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Naphthalene
Mg/L
140
0.73
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Toluene
Mg/L
1000
<
2
<
2
<
2
0.25 J
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
<
5
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
<
4
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-22D
Analyte
Unit
Remediation
Objective (RO)
Result (DUP)
8/17/2017
Result
11/22/2017
Result
2/14/2018
Result
5/8/2018
Result
8/14/2018
Result
11/7/2018
Result
2/20/2019
Result (DUP)
2/20/2019
Result
5/8/2019
Result
8/14/2019
Result
11/13/2019
Result
2/20/2020
Acenaphthene
mg/L
0.42
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0066
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.00566
<
0.006
0.00529
0.00829
0.00939
0.00579
0.00243
0.00215
0.0111
0.00834
0.00636
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0021
0.000142
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Fluorene
mg/L
0.28
<
0.0021
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
0.00126
<
0.0002
<
0.0002
<
0.0002
Phenanthrene
mg/L
-
<
0.0064
0.000882
<
0.0001
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Pyrene
mg/L
0.21
<
0.0027
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.5
<
0.5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.1
<
2
<
2
<
2
<
2
<
2
<
2
2.86
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-22D
Analyte
Unit
Remediation
Objective (RO)
Result
5/11/2020
Result
8/12/2020
Result
11/9/2020
Result
2/23/2021
Result
5/12/2021
Result
8/12/2021
Result
11/9/2021
Result
2/16/2022
Result
5/10/2022
Result
9/6/2022
Result
11/28/2022
Acenaphthene
mg/L
0.42
<
0.000081
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.000081
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.000242
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.000081
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.000081
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.000081
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.000161
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.000081
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.00161 C
<
0.002 C
<
0.002
C
<
0.002
<
0.002
<
0.002
<
0.002
B
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.000081
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.000081
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.00806
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.000242
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.000161
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.000081
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.00806
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.00806
<
0.01
<
0.0004
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.000323
<
0.0004
<
0.01
<
0.0004
<
0.0004
<
0.0004
0.000955
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.000484
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.000161
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
0.52
1.2
0.45 J
0.21
J
<
0.5
S
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
0.12
J
<
1
S
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
0.43
J
<
1
S
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
B
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2 B
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
0.11
J
<
1
S
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
S
<
2
<
2
0.11 J
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
0.54
J
<
2
S
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-22D
Analyte
Unit
Remediation
Objective (RO)
Result
2/14/2023
Result
5/16/2023
Result
9/14/2023
Result
10/26/2023
Result - DUP
10/26/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.01
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
0.2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
0.59 J
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-25
Analyte
Unit
Remediation
Objective (RO)
Result
2/19/2020
Result
5/13/2020
Result
8/14/2020
Result (DUP)
8/14/2020
Result
8/14/2020
Result
11/11/2020
Result
2/23/2021
Result
5/12/2021
Result
8/11/2021
Result
11/8/2021
Acenaphthene
mg/L
0.42
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0001
<
0.000226
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.00015
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.0015
C
<
0.002 C
<
0.002 C
<
0.002 C
<
0.002
C
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.00752
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
<
0.000226
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
<
0.00015
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.000075
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
0.00069
J
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.00752
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.000301
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0004
<
0.000451
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.00015
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.11 J
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.48 J
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
0.45 J
<
2
<
2
<
2
<
2
<
2
B
3.29
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.1 J
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.58 J
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-25
Analyte
Unit
Remediation
Objective (RO)
Result
2/15/2022
Result
5/10/2022
Result
9/6/2022
Result
11/28/2022
Result
2/13/2023
Result
5/15/2023
Result
9/14/2023
Result
10/26/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
0.012
J
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.0002
B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
0.16 J
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2 B
0.46 BJ
<
2
B
<
2
1.5 J
3.77
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
0.4 J
0.29
J
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-26
Analyte
Unit
Remediation
Objective (RO)
Result
2/19/2020
Result
5/13/2020
Result
8/13/2020
Result
11/10/2020
Result
2/24/2021
Result
5/11/2021
Result
8/12/2021
Result
11/8/2021
Result
2/15/2022
Acenaphthene
mg/L
0.42
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000072 J
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0001
<
0.000213
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
<
0.0001
0.000081 J
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.000142
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.00142 C
<
0.002
C
<
0.002
C
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.00709
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0002
<
0.000213
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0001
<
0.000142
<
0.0002
<
0.0002
<
0.0002
<
0.0002
0.000215
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.000071
0.000082
J
<
0.0001
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.00709
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.00709
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Naphthalene
mg/L
0.14
<
0.0002
<
0.000284
<
0.0004
<
0.0004
<
0.0004
<
0.0004
0.00429
<
0.0004
<
0.0004
Phenanthrene
mg/L
-
<
0.0004
<
0.000426
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002
<
0.000142
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
|jg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
ijg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Ethylbenzene
ijg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.15
J
<
1
m,p-Xylenes
ijg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.52
J
<
1
Methylene chloride
ijg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
ijg/L
140
<
2
<
2
<
2
<
2
B
0.52 J
<
2
<
2
<
2
<
2
o-Xylene
ijg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
0.12
J
<
1
Toluene
ijg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
ijg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
ijg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.64
J
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
[jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
GW-26
Analyte
Unit
Remediation
Objective (RO)
Result
5/10/2022
Result
9/6/2022
Result
11/28/2022
Result
2/13/2023
Result
5/15/2023
Result
9/15/2023
Result
10/26/2023
Acenaphthene
mg/L
0.42
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
0.0018 J
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0004
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
<
0.0004
<
0.0004
<
0.0004
<
0.0004
<
0.01
<
0.01
<
0.01
Phenanthrene
mg/L
-
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0002 B
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2 B
<
2
B
<
2
0.69 J
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
0.21
J
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
G-101S
Analyte
Unit
Remediation
Objective (RO)
Result
5/14/2015
Result (DUP)
5/14/2015
Result
5/27/2016
Result (DUP)
5/27/2016
Result
5/18/2017
Result (DUP)
5/18/2017
Result (DUP)
5/9/2018
Result
5/6/2019
Result
5/13/2020
Result
5/11/2021
Result
5/10/2022
Result
5/16/2023
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.000234
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
0.00016
J
<
0.00076
<
0.00076
<
0.00076
<
0.0001
<
0.0002
<
0.000156
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.00156 C
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.00781
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0002
<
0.000234
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.000156
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
0.00014
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000078
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.0001
<
0.0001
<
0.00781
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.0001
<
0.0001
<
0.00781
<
0.01
<
0.01
<
0.0004
Naphthalene
mg/L
0.14
<
0.0002
<
0.000312
<
0.0004
<
0.0004
<
0.01
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0064
<
0.0004
<
0.0004
<
0.000469
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0001
<
0.0002
<
0.000156
<
0.0002
<
0.0002 B
<
0.0002
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
B
<
0.2 B
<
0.2
<
0.2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
2 B
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
4
<
4
<
1 B
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
G-102S
Analyte
Unit
Remediation
Objective (RO)
Result
5/14/2015
Result
5/27/2016
Result (DUP)
5/27/2016
Result
5/18/2017
Result (DUP)
5/18/2017
Result
5/9/2018
Result
5/6/2019
Result
5/13/2020
Result
5/11/2021
Result
5/10/2022
Result
5/16/2023
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.000214
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.00076
<
0.0001
<
0.0002
<
0.000143
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
<
0.002
<
0.00143 C
0.0019 J
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.0033
<
0.00714
<
0.01
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0002
<
0.000214
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.000143
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000071
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.0001
<
0.00714
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.0001
<
0.00714
<
0.01
<
0.01
<
0.0004
Naphthalene
mg/L
0.14
<
0.0002
<
0.000286
<
0.0004
<
0.0004
<
0.01
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
0.00018 J
<
0.0064
<
0.0004
<
0.0004
<
0.000429
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0027
<
0.0001
<
0.0002
<
0.000143
<
0.0002
<
0.0002 B
<
0.0002
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2 B
<
0.2 B
<
0.2
<
0.2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
0.6
<
2
B
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
0.41 J
<
4
<
4
<
4
<
4
<
1
B
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
G-102D
Analyte
Unit
Remediation
Objective (RO)
Result
5/14/2015
Result
5/27/2016
Result
5/18/2017
Result
5/9/2018
Result
5/6/2019
Result
5/13/2020
Result
5/11/2021
Result
5/10/2022
Result - DUP
5/10/2022
Result
5/16/2023
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.0001
SR
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.000221
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.0001
<
0.0002
<
0.000147
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
0.0053
<
0.00147 C
<
0.002
<
0.002
<
0.002
<
0.002
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0001
<
0.0001
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0002
<
0.0002
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.00735
<
0.01
0.00085 J
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0002
<
0.000221
<
0.0003
<
0.0003
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.000147
<
0.0002
<
0.0002
<
0.0002
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000074
<
0.0002
<
0.0002
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
<
0.0001
<
0.00735
<
0.01
<
0.01
<
0.01
<
0.01
o-Cresol
mg/L
0.35
<
0.0001
<
0.00735
<
0.01
<
0.01
<
0.01
<
0.0004
Naphthalene
mg/L
0.14
<
0.0002
<
0.000294
<
0.0004
<
0.0004
<
0.0004
<
0.01
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0004
<
0.0004
<
0.000441
<
0.0006
<
0.0006
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0001
<
0.0002
<
0.000147
<
0.0002
<
0.0002 B
<
0.0002 B
<
0.0002
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
<
0.2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
2
B
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
1
B
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
G-103S
Analyte
Unit
Remediation
Objective (RO)
Result
5/12/2015
Result
5/26/2016
Result (DUP)
5/26/2016
Result
5/16/2017
Result
5/9/2018
Result
5/6/2019
Result (DUP)
5/6/2019
Result
5/12/2020
Result
5/12/2021
Result
5/11/2022
Result
5/17/2023
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.000073
<
0.0001
<
0.0001
<
0.0001
H
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.0001
<
0.000073
<
0.0001
<
0.0001
<
0.0001
H
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
S
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.0001
<
0.000219
<
0.0003
<
0.0003
<
0.0003
H
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000073
<
0.0001
<
0.0001
<
0.0001
H
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000073
<
0.0002
<
0.0002
<
0.0002
H
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000073
<
0.0001
<
0.0001
<
0.0001
H
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
0.0001
J
<
0.00076
<
0.00076
<
0.0001
<
0.0002
<
0.0002
<
0.000146
<
0.0002
<
0.0002
<
0.0002
H
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
S
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000073
<
0.0001
<
0.0001
<
0.0001
H
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.002
<
0.002
<
0.002
<
0.002
0.002 J
<
0.00146 C
<
0.002
<
0.002
<
0.002
H
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000073
<
0.0001
<
0.0001
<
0.0001
H
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
0.00008
J
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000073
<
0.0002
<
0.0002
<
0.0002
H
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
s
<
0.0033
<
0.0033
<
0.0073
<
0.01
<
0.01
<
0.01
H
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
s
<
0.0021
<
0.0021
<
0.0002
<
0.0002
<
0.0002
<
0.000219
<
0.0003
<
0.0003
<
0.0003
H
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.0001
<
0.000146
<
0.0002
<
0.0002
<
0.0002
H
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000073
<
0.0002
<
0.0002
<
0.0002
H
m,p-Cresol
mg/L
-
<
0.0001
<
0.0073
<
0.01
<
0.01
<
0.01
H
o-Cresol
mg/L
0.35
<
0.0001
<
0.0073
<
0.01
<
0.01
<
0.0004
H
Naphthalene
mg/L
0.14
<
0.0002
<
0.0002
<
0.000292
<
0.0004
<
0.0004
<
0.01
H
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
s
<
0.0064
<
0.0064
<
0.0004
<
0.0004
<
0.0004
<
0.000438
<
0.0006
<
0.0006
<
0.0006
H
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
s
<
0.0027
<
0.0027
<
0.0001
<
0.0002
<
0.0002
<
0.000146
<
0.0002
<
0.0002
<
0.0002
H
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
<
0.2
B
<
0.2
<
0.2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
0.6
<
2
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
0.13
J
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
4
<
1
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
G-103D
Analyte
Unit
Remediation
Objective (RO)
Result
5/12/2015
Result
5/26/2016
Result
5/16/2017
Result
5/9/2018
Result (DUP)
5/9/2018
Result
5/6/2019
Result
5/12/2020
Result - DUP
5/12/2020
Result
5/12/2021
Result
5/11/2022
Result
5/17/2023
Acenaphthene
mg/L
0.42
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000294
<
0.00008
<
0.000071
<
0.0001
<
0.0001
<
0.0001
H
Acenaphthylene
mg/L
-
<
0.01
<
0.01
<
0.01
<
0.0001
<
0.0001
<
0.000294
<
0.00008
<
0.000071
<
0.0001
<
0.0001
<
0.0001
H
Anthracene
mg/L
2.1
<
0.0066
<
0.0066
<
0.0066
<
0.0001
<
0.0001
<
0.000294
<
0.00024
<
0.000214
<
0.0003
<
0.0003
<
0.0003
H
Benzo(a)anthracene
mg/L
0.00013
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000294
<
0.00008
<
0.000071
<
0.0001
<
0.0001
<
0.0001
H
Benzo(a)pyrene
mg/L
0.0002
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000294
<
0.00008
<
0.000071
<
0.0002
<
0.0002
<
0.0002
H
Benzo(b)fluoranthene
mg/L
0.00018
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000294
<
0.00008
<
0.000071
<
0.0001
<
0.0001
<
0.0001
H
Benzo(g,h,i)perylene
mg/L
-
<
0.00076
<
0.00076
<
0.00076
<
0.0001
<
0.0001
<
0.000588
<
0.00016
<
0.000143
<
0.0002
<
0.0002
<
0.0002
H
Benzo(k)fluoranthene
mg/L
0.00017
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000294
<
0.00008
<
0.000071
<
0.0001
<
0.0001
<
0.0001
H
Bis(2-ethylhexyl)phthalate
mg/L
0.006
0.0013 J
<
0.002
<
0.002
<
0.002
<
0.00588
<
0.0016 C
<
0.00143 C
<
0.002
<
0.002
0.0015
JH
Chrysene
mg/L
0.0015
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000294
<
0.00008
<
0.000071
<
0.0001
<
0.0001
<
0.0001
H
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000294
<
0.00008
<
0.000071
<
0.0002
<
0.0002
<
0.0002
H
Di-n-butyl phthalate
mg/L
0.7
<
0.0033
<
0.0033
<
0.0033
<
0.008
<
0.00714
<
0.01
<
0.01
<
0.01
H
Fluoranthene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0002
<
0.0002
<
0.000588
<
0.00024
<
0.000214
<
0.0003
<
0.0003
<
0.0003
H
Fluorene
mg/L
0.28
<
0.0021
<
0.0021
<
0.0021
<
0.0001
<
0.0001
<
0.000294
<
0.00016
<
0.000143
<
0.0002
<
0.0002
<
0.0002
H
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.0001
<
0.000294
<
0.00008
<
0.000071
<
0.0002
<
0.0002
<
0.0002
H
m,p-Cresol
mg/L
-
<
0.0001
<
0.008
<
0.00714
<
0.01
<
0.01
<
0.01
H
o-Cresol
mg/L
0.35
<
0.0001
<
0.008
<
0.00714
<
0.01
<
0.01
<
0.0004
H
Naphthalene
mg/L
0.14
<
0.00059
<
0.00032
<
0.000286
<
0.0004
<
0.0004
<
0.01
H
Phenanthrene
mg/L
-
<
0.0064
<
0.0064
<
0.0064
<
0.0004
<
0.0004
<
0.00118
<
0.00048
<
0.000429
<
0.0006
<
0.0006
<
0.0006
H
Pyrene
mg/L
0.21
<
0.0027
<
0.0027
<
0.0027
<
0.0001
<
0.0001
<
0.000588
<
0.00016
<
0.000143
<
0.0002
<
0.0002
<
0.0002
H
Benzene
Mg/L
5.0
<
2
<
2
<
2
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
0.2
Ethylbenzene
Mg/L
700
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
4
<
4
<
4
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
0.2
0.2 B
<
0.2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
0.6
<
0.6
<
0.6
<
2
<
2 B
<
2
<
2
<
2
<
2
<
2
<
2
o-Xylene
Mg/L
-
<
2
<
2
<
2
<
1
<
1
<
1
<
1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
5
<
5
<
5
<
2
<
2
<
2
<
2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
4
<
4
<
4
<
1
<
1 B
<
2
<
2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tavlorville. IL MGP Site
QC Samples
Analyte
Unit
Remediation
Objective (RO)
Field Blank 1
Result
5/13/2020
Field Blank 1
Result
8/12/2020
Field Blank 2
Result
8/14/2020
Field Blank 1
Result
11/9/2020
Field Blank 1
Result
2/24/2021
Trip Blank 1
Result
8/12/2021
Trip Blank 2
Result
8/12/2021
Trip Blank 1
Result
11/10/2021
Trip Blank 2
Result
11/10/2021
Field Blank 1
Result
11/9/2021
Acenaphthene
mg/L
0.42
0.000193
<
0.0001
<
0.0001
<
0.0001
<
0.0001
NA
NA
NA
NA
<
0.0001
Acenaphthylene
mg/L
-
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
NA
NA
NA
NA
<
0.0001
Anthracene
mg/L
2.1
<
0.000231
<
0.0003
<
0.0003
<
0.0003
<
0.0003
NA
NA
NA
NA
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
NA
NA
NA
NA
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0002
NA
NA
NA
NA
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
NA
NA
NA
NA
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
<
0.000154
<
0.0002
<
0.0002
<
0.0002
<
0.0002
NA
NA
NA
NA
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
NA
NA
NA
NA
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
<
0.00154 C
<
0.002 C
<
0.002 C
<
0.002
C
<
0.002
NA
NA
NA
NA
0.002 E
Chrysene
mg/L
0.0015
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0001
NA
NA
NA
NA
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
<
0.000077
<
0.0001
<
0.0001
<
0.0001
<
0.0002
NA
NA
NA
NA
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
<
0.00769
<
0.01
<
0.01
<
0.01
<
0.01
NA
NA
NA
NA
<
0.01
Fluoranthene
mg/L
0.28
<
0.000231
<
0.0003
<
0.0003
<
0.0003
<
0.0003
NA
NA
NA
NA
<
0.0003
Fluorene
mg/L
0.28
0.000311
<
0.0002
<
0.0002
<
0.0002
<
0.0002
NA
NA
NA
NA
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
<
0.000077
<
0.0001
0.000078 J
<
0.0001
<
0.0002
NA
NA
NA
NA
<
0.0002
m,p-Cresol
mg/L
-
<
0.00769
<
0.01
<
0.01
<
0.01
<
0.01
NA
NA
NA
NA
<
0.01
o-Cresol
mg/L
0.35
<
0.00769
<
0.01
<
0.01
<
0.0004
<
0.0004
NA
NA
NA
NA
<
0.0004
Naphthalene
mg/L
0.14
<
0.000308
<
0.0004
<
0.0004
<
0.01
<
0.01
NA
NA
NA
NA
<
0.01
Phenanthrene
mg/L
-
<
0.000462
<
0.0006
<
0.0006
<
0.0006
<
0.0006
NA
NA
NA
NA
<
0.0006
Pyrene
mg/L
0.21
<
0.000154
<
0.0002
<
0.0002
<
0.0002
<
0.0002
NA
NA
NA
NA
<
0.0002
Benzene
Mg/L
5.0
<
0.5
<
0.5
<
0.5
<
0.5
<
0.5
< 0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
<
2
<
2
<
2
<
2
< 2
<
2
<
2
<
2
<
2
Ethylbenzene
Mg/L
700
<
1
<
1
<
1
<
1
<
1
< 1
<
1
0.21 J
0.2 J
0.12
m,p-Xylenes
Mg/L
-
<
1
<
1
<
1
0.29
J
<
1
< 1
0.21 J
0.85 J
0.93 J
0.37
Methylene chloride
Mg/L
5.0
<
2
<
2
<
2
<
2
<
2
< 2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
<
2
<
2
<
2
B
<
2
< 2
<
2
0.67 J
<
2
<
2
o-Xylene
Mg/L
-
<
1
<
1
<
1
<
1
<
1
< 1
<
1
0.16 J
0.19 J
<
1
Toluene
Mg/L
1000
<
2
<
2
<
2
<
2
<
2
< 2
<
2
0.11 J
0.11 J
<
2
trans-1,2-Dichloroethene
Mg/L
100
<
2
<
2
<
2
<
2
<
2
< 2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
<
2
<
2
0.29
J
<
2
< 2
<
2
1 J
1.1 J
0.37
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Trip Blank 1
Trip Blank 2
Trip Blank 1
Trip Blank 2
Field Blank 1
Trip Blank 1
Field Blank 1
Trip Blank 1
Trip Blank 2
Field Blank 1
QC Samples
Remediation
Result
Result
Result
Result
Result
Result
Result
Result
Result
Result
Analyte
Unit
Objective (RO)
2/17/2022
2/17/2022
5/12/2022
5/12/2022
9/8/2022
9/8/2022
11/30/2022
11/30/2022
11/30/2022
2/14/2023
Acenaphthene
mg/L
0.42
NA
NA
NA
NA
<
0.0001
NA
<
0.0001
NA
NA
<
0.0001
Acenaphthylene
mg/L
-
NA
NA
NA
NA
<
0.0001
NA
<
0.0001
NA
NA
<
0.0001
Anthracene
mg/L
2.1
NA
NA
NA
NA
<
0.0003
NA
<
0.0003
NA
NA
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
NA
NA
NA
NA
<
0.0001
NA
<
0.0001
NA
NA
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
NA
NA
NA
NA
<
0.0002
NA
<
0.0002
NA
NA
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
NA
NA
NA
NA
<
0.0001
NA
<
0.0001
NA
NA
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
NA
NA
NA
NA
<
0.0002
NA
<
0.0002
NA
NA
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
NA
NA
NA
NA
<
0.0001
NA
<
0.0001
NA
NA
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
NA
NA
NA
NA
<
0.002
NA
<
0.002
NA
NA
<
0.002
Chrysene
mg/L
0.0015
NA
NA
NA
NA
<
0.0001
NA
<
0.0001
NA
NA
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
NA
NA
NA
NA
<
0.0002
NA
<
0.0002
NA
NA
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
NA
NA
NA
NA
<
0.01
NA
<
0.01
NA
NA
<
0.01
Fluoranthene
mg/L
0.28
NA
NA
NA
NA
<
0.0003
NA
<
0.0003
NA
NA
<
0.0003
Fluorene
mg/L
0.28
NA
NA
NA
NA
<
0.0002
NA
<
0.0002
NA
NA
<
0.0002
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
NA
NA
NA
NA
<
0.0002
NA
<
0.0002
NA
NA
<
0.0002
m,p-Cresol
mg/L
-
NA
NA
NA
NA
<
0.01
NA
<
0.01
NA
NA
<
0.01
o-Cresol
mg/L
0.35
NA
NA
NA
NA
<
0.0004
NA
<
0.0004
NA
NA
<
0.01
Naphthalene
mg/L
0.14
NA
NA
NA
NA
<
0.01
NA
<
0.01
NA
NA
<
0.0004
Phenanthrene
mg/L
-
NA
NA
NA
NA
<
0.0006
NA
<
0.0006
NA
NA
<
0.0006
Pyrene
mg/L
0.21
NA
NA
NA
NA
<
0.0002
NA
<
0.0002
NA
NA
<
0.0002
Benzene
Mg/L
5.0
<
0.5
< 0.5
<
0.5
< 0.5
<
0.5
< 0.5
<
0.5
<
0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
<
2
< 2
<
2
< 2
<
2
< 2
<
0.2
<
0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
<
1
< 1
<
1
< 1
<
1
< 1
<
1
<
1
<
1
<
1
m,p-Xylenes
Mg/L
-
<
1
< 1
<
1
< 1
<
1
< 1
<
1
<
1
<
1
<
1
Methylene chloride
Mg/L
5.0
<
2
< 2
<
2
< 2
<
2
< 2
<
2
<
2
<
2
<
2
Naphthalene
Mg/L
140
<
2
< 2
<
2
< 2
<
2
< 2
0.46 BJ
0.46 BJ
0.78 J
<
2 B
o-Xylene
Mg/L
-
<
1
< 1
<
1
< 1
<
1
< 1
<
1
<
1
<
1
<
1
Toluene
Mg/L
1000
<
2
< 2
<
2
< 2
<
2
< 2
1.1 J
<
2
<
2
1.2 J
trans-1,2-Dichloroethene
Mg/L
100
<
2
< 2
<
2
< 2
<
2
< 2
<
2
<
2
<
2
<
2
Xylenes, Total
Mg/L
10000
<
2
< 2
<
2
< 2
<
2
< 2
<
2
<
2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Attachment B
Summary of Analytical Results
2015 - October 2023
Ameren Tav orville. IL MGP Site
Trip Blank 1
Trip Blank 2
Trip Blank 1
Trip Blank 2
Trip Blank 1
Trip Blank 1
Field Blank 1
Field Blank 2
QC Samples
Remediation
Result
Result
Result
Result
Result
Result
Result
Result
Analyte
Unit
Objective (RO)
2/15/2023
2/15/2023
5/15/2023
5/15/2023
9/15/2023
10/25/2023
10/26/2023
10/27/2023
Acenaphthene
mg/L
0.42
NA
NA
NA
NA
NA
NA
<
0.0001
<
0.0001
Acenaphthylene
mg/L
-
NA
NA
NA
NA
NA
NA
<
0.0001
<
0.0001
Anthracene
mg/L
2.1
NA
NA
NA
NA
NA
NA
<
0.0003
<
0.0003
Benzo(a)anthracene
mg/L
0.00013
NA
NA
NA
NA
NA
NA
<
0.0001
<
0.0001
Benzo(a)pyrene
mg/L
0.0002
NA
NA
NA
NA
NA
NA
<
0.0002
<
0.0002
Benzo(b)fluoranthene
mg/L
0.00018
NA
NA
NA
NA
NA
NA
<
0.0001
<
0.0001
Benzo(g,h,i)perylene
mg/L
-
NA
NA
NA
NA
NA
NA
<
0.0002
<
0.0002
Benzo(k)fluoranthene
mg/L
0.00017
NA
NA
NA
NA
NA
NA
<
0.0001
<
0.0001
Bis(2-ethylhexyl)phthalate
mg/L
0.006
NA
NA
NA
NA
NA
NA
<
0.002
<
0.002
Chrysene
mg/L
0.0015
NA
NA
NA
NA
NA
NA
<
0.0001
<
0.0001
Dibenzo(a,h)anthracene
mg/L
0.0003
NA
NA
NA
NA
NA
NA
<
0.0002
<
0.0002
Di-n-butyl phthalate
mg/L
0.7
NA
NA
NA
NA
NA
NA
<
0.01
<
0.01
Fluoranthene
mg/L
0.28
NA
NA
NA
NA
NA
NA
<
0.0003
<
0.0003
Fluorene
mg/L
0.28
NA
NA
NA
NA
NA
NA
<
0.0002 B
<
0.0002 B
lndeno(1,2,3-cd)pyrene
mg/L
0.00043
NA
NA
NA
NA
NA
NA
<
0.0002
<
0.0002
m,p-Cresol
mg/L
-
NA
NA
NA
NA
NA
NA
<
0.01
<
0.01
o-Cresol
mg/L
0.35
NA
NA
NA
NA
NA
NA
<
0.0004
<
0.0004
Naphthalene
mg/L
0.14
NA
NA
NA
NA
NA
NA
<
0.01
<
0.01
Phenanthrene
mg/L
-
NA
NA
NA
NA
NA
NA
<
0.0006
<
0.0006
Pyrene
mg/L
0.21
NA
NA
NA
NA
NA
NA
<
0.0002
<
0.0002
Benzene
Mg/L
5.0
< 0.5
<
0.5
<
0.5
< 0.5
< 0.5
< 0.5
<
0.5
<
0.5
Bromoform
Mg/L
1.0
< 0.2
<
0.2
<
0.2
< 0.2
< 0.2
< 0.2
<
0.2
<
0.2
Ethylbenzene
Mg/L
700
< 1
<
1
<
1
< 1
< 1
< 1
<
1
<
1
m,p-Xylenes
Mg/L
-
< 1
<
1
<
1
< 1
< 1
< 1
<
1
<
1
Methylene chloride
Mg/L
5.0
< 2
<
2
<
2
< 2
< 2
< 2
<
2
<
2
Naphthalene
Mg/L
140
< 2 B
<
2 B
<
2
< 2
< 2
< 2
<
2
<
2
o-Xylene
Mg/L
-
< 1
<
1
<
1
< 1
< 1
< 1
<
1
<
1
Toluene
Mg/L
1000
< 2
<
2
<
2
< 2
< 2
< 2
<
2
<
2
trans-1,2-Dichloroethene
Mg/L
100
< 2
<
2
<
2
< 2
< 2
< 2
<
2
<
2
Xylenes, Total
Mg/L
10000
< 2
<
2
<
2
< 2
< 2
< 2
<
2
<
2
Notes:
B = Analyte detected in associated method blank
J = Analyte detected below quantitation limits
C = RL shown is a client requested quantitation limit
E = Value above quantitation range
S = Spike Recovery outside recovery limits
R = RPD outside accepted recovery limits
Yellow = Exceeds RO for Class I Groundwater Ingestion
< = Compound not detected at concentrations above the laboratory
reporting detection limit.
The laboratory reporting detection limit is shown.
Remediation Objective (RO) = I EPA TACO Tier 1 CLASS I
Groundwater Ingestion
All analyses performed by Teklab, Inc.
mg/L = milligrams per liter
|jg/L = micrograms per liter
-------
Ameren Taylorville
FMGP GWM results 2020-
2023
Ameren Taylorville 2020-2023 GWM results
1
-------
Onsite and Adjacent Monitoring Wells
ERM
t Esrt - Worid Topooyaptilc Map 1983 2G11 GtatePBie 11 (no ฆ
Ameren Taylorville 2020-2023 GWM results
-------
Offsite Monitoring Wells
GW-102D
Legend
ฆ0^ Groundwater Well
Parent Parcel Boundary
U Site Boundary
- Approximate City Limits
Regional Groundwater Row Direction
Figure 2
Offsite Groundwater Wells
Ameren Taylorville MGP Site
Taylorville Township
Christian County, IL
Ameren Taylorville 2020-2023 GWM results
3
-------
Monitoring Well Abandonment Status
Currently Abandoned as of 2 /1/2024:
GW-1
GW-3
GW-13S
GW-13D
GW-103D
GW-103S
ERM
Scheduled to be Abandoned mid February 2024;
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrF
GW-2
GW-9S
GW-9D
Ameren Taylorville 2020-2023 GWM results
-------
GW-1 (Abandoned)
0.006
GW-1
0.06
0.005
0.05
0.004
0.04
*So
cd 0.003
CD
N
CD
CQ
J
IS
CD
0.03 g
43
Ch
as
0.002
0.02
0.001
0.01
0.000
0.00
o
NJ
N3
O
N3
O
O
CO
N)
o
N3
O
o
N5
O
N3
O
N)
CO
N3
O
N3
O
N3
O
N3
N3
N)
CO
N5
O
N3
N3
O
U1
N3
O
N3
U3
Benzene
Benzene CUO
Naphthalene
Naphthalene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mq/L
mq/L
mq/L
mq/L
2/19/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
5/14/2020
< 0.0005
< 0.000074
< 0.000074
< 0.002
8/13/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
11/11/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
2/24/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
GW-1
5/13/2021
< 0.0005
< 0.002
8/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
11/9/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
2/16/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/10/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
9/8/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
11/29/2022
< 0.00050
< 0.000100
< 0.000200
0.00048
2/15/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
5/16/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
-------
GW-2
0.006
0.005
0.004
ao
ฃ_
-------
GW-3 (Abandoned)
0.06
0.05
0.04
ao
ฃ.
-------
GW-4R
1.4
GW-4R
1.2
1.0
*b3 0-8
ฃ_
CD
ฃ
CD
rsl
ฃ 0.6
CO
0.4
:
t
0.2
:
0.0
o
NJ
NJ
O
NJ
O
o
tO
O
cn
NJ
o
NJ
o
o
CO
NJ
o
NJ
NJ
O
NJ
o
O
cn
NJ
o
to
Ln
U)
NJ
NJ
NJ
O
O
o
NJ
NJ
NJ
NJ
NJ
U)
Benzene
Benzene CUO
Naphthalene
Naphthalene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
5.0
4.5
4.0
3.5
3.0 cuo
CD
2.5 5
2-0 ฃ
1.5
1.0
0.5
0.0
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mq/L
mq/L
mq/L
mq/L
2/18/2020
0.535
0.000102
< 0.0001
3.57
5/13/2020
0.739
0.000086
< 0.000075
5.56
8/13/2020
0.450
0.000113
< 0.0001
4.70
11/10/2020
0.399
0.000142
< 0.0001
4.13
2/24/2021
0.632
0.000133
< 0.0002
2.79
5/13/2021
0.341
0.000186
< 0.0002
1.51
5/13/2021
0.775
0.000261
< 0.0002
3.15
8/12/2021
0.652
0.000158
< 0.0002
3.02
8/12/2021
0.658
0.000173
< 0.0002
3.02
11/9/2021
0.798
0.000214
< 0.0002
3.52
GW-4R
2/17/2022
1.15
0.000104
< 0.0002
2.53
2/17/2022
1.18
0.000085
< 0.0002
2.62
5/12/2022
1.07
0.000115
0.00012
3.35
5/12/2022
1.10
< 0.0001
< 0.0002
3.55
9/8/2022
0.670
0.00009
< 0.000200
3.54
11/30/2022
0.895
0.00194
0.00017
2.34
2/15/2023
0.612
0.00011
< 0.000200
2.49
2/15/2023
0.609
0.00015
< 0.000200
2.38
5/18/2023
0.364
0.00007
< 0.000200
1.48
5/18/2023
0.341
< 0.000100
< 0.000200
1.580
9/13/2023
0.241
0.000078
< 0.000200
0.740
9/13/2023
0.235
0.000096
< 0.000200
0.814
10/27/2023
0.392
0.000620
< 0.000200
0.531
10/27/2023
0.346
0.000570
< 0.000200
0.510
Bolded results indicate detection
above laboratory reporting limits.
Monitoring well located
within Site boundary
-------
GW-4R
0.00025
0.00020
euo
0.00015
(D
C
(D
U
CD
3 0.00010
M
c
(D
CO
0.00005
0.00000
GW
-4R
1
1
1
1
ซ_
1
1
1
1
0.00025
0.00020
0.00015 j=
(D
C
(D
Q.
0.00010
c
(D
CQ
0.00005
0.00000
o
NJ
NJ
O
NJ
O
o
tO
O
cn
NJ
o
NJ
o
o
CO
NJ
o
NJ
NJ
O
NJ
O
O
1-*
CD
NJ
O
to
cn
CO
NJ
NJ
NJ
O
O
O
NJ
NJ
NJ
NJ
NJ
CO
Benz(a)anthracene
Benz(a)anthracene CUO
Benzo(a)pyrene
Benzo(a)pyrene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mq/L
mq/L
mq/L
mq/L
2/18/2020
0.535
0.000102
< 0.0001
3.57
5/13/2020
0.739
0.000086
< 0.000075
5.56
8/13/2020
0.450
0.000113
< 0.0001
4.70
11/10/2020
0.399
0.000142
< 0.0001
4.13
2/24/2021
0.632
0.000133
< 0.0002
2.79
5/13/2021
0.341
0.000186
< 0.0002
1.51
5/13/2021
0.775
0.000261
< 0.0002
3.15
8/12/2021
0.652
0.000158
< 0.0002
3.02
8/12/2021
0.658
0.000173
< 0.0002
3.02
11/9/2021
0.798
0.000214
< 0.0002
3.52
GW-4R
2/17/2022
1.15
0.000104
< 0.0002
2.53
2/17/2022
1.18
0.000085
< 0.0002
2.62
5/12/2022
1.07
0.000115
0.00012
3.35
5/12/2022
1.10
< 0.0001
< 0.0002
3.55
9/8/2022
0.670
0.00009
< 0.000200
3.54
11/30/2022
0.895
0.00194
0.00017
2.34
2/15/2023
0.612
0.00011
< 0.000200
2.49
2/15/2023
0.609
0.00015
< 0.000200
2.38
5/18/2023
0.364
0.00007
< 0.000200
1.48
5/18/2023
0.341
< 0.000100
< 0.000200
1.580
9/13/2023
0.241
0.000078
< 0.000200
0.740
9/13/2023
0.235
0.000096
< 0.000200
0.814
10/27/2023
0.392
0.000620
< 0.000200
0.531
10/27/2023
0.346
0.000570
< 0.000200
0.510
Bolded results indicate detection
above laboratory reporting limits.
Monitoring well located
within Site boundary 9
-------
GW-5
0.006
0.005
GW-5
0.004
tLO
(D
C
(D
N
c
(D
CO
0.003
0.002
0.001
0.000
o
NJ
NJ
O
NJ
O
o
00
NJ
O
NJ
O
O
UJ
o
^>1
NJ
O
NJ
O
to
NJ
O
NJ
O
4^
NJ
O
NJ
NJ
00
NJ
O
NJ
O
Ln
NJ
o
NJ
m
m
Benzene
Benzene CUO
Naphthalene
Naphthalene CU
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mq/L
mq/L
mq/L
mq/L
2/20/2020
< 0.0005
< 0.0001
< 0.0001
0.047
5/12/2020
< 0.0005
< 0.000078
< 0.000078
< 0.002
8/13/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
8/13/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
11/11/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
2/24/2021
0.00018
< 0.0001
< 0.0002
< 0.002
5/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
8/12/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
GW-5
11/9/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
2/15/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/10/2022
< 0.0005
< 0.0001
< 0.0002
0.001
9/7/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
11/29/2022
< 0.00050
< 0.000100
< 0.000200
0.001
2/13/2023
< 0.00050
< 0.000100
< 0.000200
0.00049
5/16/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
5/16/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
9/13/2023
< 0.00050
< 0.000100
< 0.000200
0.00140
9/15/2023
< 0.00050
< 0.000100
< 0.000200
0.0110
10/25/2023
< 0.00050
< 0.000100
< 0.000200
0.00093
Bolded results indicate detection
above laboratory reporting limits.
10
-------
GW-7
0.006
0.005
0.004
ao
ฃ_
1
NJ
O
NJ
O
to
NJ
O
NJ
o
O
NJ
00
NJ
NJ
O
O
NJ
NJ
NJ
NJ
O
Ln
cn
NJ
ฐBenzene
U)
ฆ Benzene CUO
Naphthalene
ฆ Naphthalene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
mq/L
Benz(a)anthracene
mq/L
Benzo(a)pyrene
mq/L
Naphthalene
mq/L
2/18/2020
< 0.0005
0.000164
< 0.0001
0.00607
5/12/2020
< 0.0005
0.000141
< 0.000072
< 0.002
8/13/2020
0.00051
0.000168
< 0.0001
0.00064
11/10/2020
< 0.0005
0.000155
< 0.0001
0.00140
2/23/2021
< 0.0005
0.000119
< 0.0002
< 0.002
5/12/2021
< 0.0005
0.000161
< 0.0002
0.00140
GW-7
8/12/2021
< 0.0005
0.000186
< 0.0002
< 0.002
11/9/2021
< 0.0005
0.000235
< 0.0002
< 0.002
2/16/2022
< 0.0005
0.000185
< 0.0002
< 0.002
5/11/2022
< 0.0005
0.000182
< 0.0002
< 0.002
9/7/2022
< 0.00050
0.000212
< 0.000200
< 0.00200
11/29/2022
< 0.00050
0.000201
< 0.000200
0.0007
2/15/2023
< 0.00050
0.000202
< 0.000200
0.00036
5/17/2023
< 0.00050
0.000183
< 0.000200
< 0.00200
9/13/2023
< 0.00050
0.000235
< 0.000200
< 0.00200
10/27/2023
< 0.00050
0.000211
< 0.000200
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
Monitoring well located
within Site boundary n
-------
GW-7
0.00030
0.00025
0.00020
aj
c
(D
2 0.00015
_c
+-ป
c
CD
ฃ 0.00010
CQ
0.00005
0.00000
GW-7
0.00025
0.00020
ao
0.00015 J.
(D
C
(D
Q.
ro
0.00010 o
M
C
-------
GW-9D
0.006
0.005
0.004
GW-9D
0.06
0.05
cd 0.003
CD
N
CD
CQ
0.002
0.001
0.04
~bB
0.03
0.000
-32
"re
ฃ
-C
cx
as
0.02
0.01
0.00
o
N)
N3
O
N3
O
O
CO
N3
O
N3
O
O
CO
o
N5
O
N3
O
vO
N3
O
N3
o
4s"
O
NJ
i^
CO
NJ
NJ
O
O
N)
NJ
N)
NJ
O
cn
N3
O
N3
ฎ Benzene
ฆ Benzene CUO
Naphthalene
ป Naphthalene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mq/L
mq/L
mq/L
mq/L
5/12/2020
< 0.0005
< 0.000072
< 0.000072
< 0.002
GW-9D
5/12/2021
< 0.0005
< 0.0001
< 0.0002
0.0052
5/12/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/10/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/17/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
GW-9D is scheduled for abandonment
February 2024.
13
-------
0.006
0.005
0.004
0.003
0.002
0.001
o
fsj
o
00
fsj
o
ro
o
fsj
o
ro
o
o
tu
o
ro
o
fsj
o
to
ro
o
fsj
Ameren Taylorville 2020-2023 GWM results
: 0.06
;
0,05
0,04
*00
-------
GW-12 and GW-13S (Abandoned)
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mg/L
mg/L
mg/L
mg/L
GW-12
05/12/2020
< 0.0005
< 0.000078
< 0.000078
< 0.002
05/12/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
05/11/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
05/17/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Sample date
Benzene
mg/L
Benz(a)anthracene
ma/L
Benzo(a)pyrene
ma/L
Naphthalene
ma/L
05/17/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
GW-13S
05/11/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
05/13/2020
< 0.0005
< 0.000076
< 0.000076
< 0.002
05/12/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
05/11/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
05/17/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
GW-13S Abandoned
ERM
Araeren Taylorville 2020-2023 GWM results
15
-------
GW-13D (Abandoned)
0.00025
0.00020
ao
E
-------
GW-14
0.006
GW-14
0.06
0.005
0.05
0.004
ao
ฃ.
-------
GW-15
0.006
GW-15
0.06
0.005
0.05
0.004
CbO
ฃ
0.003
c
Ol
M
c
(D
CD
0.002
0.04 _
i
cu)
E
0.03
0.02
(D
C
_aj
Q.
0.001
0.01
0.000
0.00
o
NJ
NJ
O
NJ
O
o
00
NJ
O
NJ
O
O
UJ
o
NJ
O
NJ
O
tO
NJ
O
NJ
O
4^
NJ
O
NJ
NJ
00
NJ
O
NJ
O
Ln
NJ
o
NJ
Benzene
Benzene CUO
Naphthalene
Naphthalene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
mq/L
Benz(a)anthracene
mq/L
Benzo(a)pyrene
mq/L
Naphthalene
mq/L
2/20/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
2/20/2020
< 0.0005
0.000061
0.000078
0.0017
5/13/2020
< 0.0005
< 0.000074
< 0.000074
< 0.002
8/13/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
11/10/2020
< 0.0005
0.000084
0.000069
< 0.002
2/23/2021
< 0.0005
< 0.0001
< 0.0002
0.0011
5/13/2021
< 0.0005
0.00007
< 0.0002
< 0.002
5/13/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
8/12/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
GW-15
11/9/2021
< 0.0005
< 0.0001
< 0.0002
0.0016
2/17/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
2/17/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/11/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
9/8/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
11/30/2022
< 0.00050
< 0.000100
< 0.000200
0.00055
2/15/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
2/15/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
5/18/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
5/18/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
9/13/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
10/27/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
Monitoring well located
within Site boundary
18
-------
GW-15
0.00025
0.00020
tLO
E
-------
GW-16D
0.006
0.005
0.004
euo
ฃ.
-------
GW-16S
0.006
0.005
0.004
CbO
-------
GW-17
0.006
0.005
0.004
ao
ฃ_
CD
C
Benzene
Benzene CUO
(ง) Naphthalene
Naphthalene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
mq/L
Benz(a)anthracene
mq/L
Benzo(a)pyrene
mq/L
Naphthalene
mq/L
2/18/2020
< 0.0005
0.000055
< 0.0001
< 0.002
5/12/2020
< 0.0005
< 0.000077
< 0.000077
< 0.002
8/12/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
11/11/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
2/22/2021
< 0.0005
< 0.0001
< 0.0002
0.00038
5/10/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
GW-17
8/10/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
11/8/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
2/15/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/9/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
9/6/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
11/28/2022
< 0.00050
< 0.000100
< 0.000200
0.00049
2/13/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
5/15/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
9/14/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
10/25/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
22
-------
GW-17
0.00025
0.00020
tLO
ฃ
(D
C
(D
0.00015
c
(D
CO
0.00005
0.00000
GW-17
0.00025
0.00020
tLO
0.00015 J.
(D
C
(D
Q.
ro
0.00010 o
M
C
-------
GW-18S
o.oo6 I GW-18S
0.06
0.005 0.05
0.004 f- 0.04
Ctf)
E
Ctf)
E
(D
00 U> UD O un
O I* O N> I-* NJ I*
I* tO "-J CO I* 00 (J)
NJ NJ NJ NJ NJ NJ NJ
O O O O O O O
<ง> Benzene
Benzene CUO
# Naphthalene
Naphthalene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
mq/L
Benz(a)anthracene
mq/L
Benzo(a)pyrene
mq/L
Naphthalene
mq/L
2/19/2020
< 0.0005
< 0.0001
< 0.0001
0.00052
5/13/2020
< 0.0005
< 0.000078
< 0.000078
< 0.002
8/14/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
11/11/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
2/23/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
8/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
11/10/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
11/10/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
2/16/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/9/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
9/7/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
11/29/2022
< 0.00050
< 0.000100
< 0.000200
0.00048
2/14/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
5/16/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
9/14/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
10/26/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
24
-------
GW-18D
0.006 GW-18D 0.06
0.005 0.05
0.004 \- 0.04
ao
ฃ
ao
ฃ
CD
0.003 I 0.03 S
ai
M -C
00 U> UD O un
O O NJ NJ
I-* tO "-J CO I-* 00 (T>
Benzene
Benzene CUO
Naphthalene
Naphthalene CUO
Q.
CD
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
mq/L
Benz(a)anthracene
mq/L
Benzo(a)pyrene
mq/L
Naphthalene
mq/L
2/19/2020
< 0.0005
< 0.0001
< 0.0001
0.00045
5/13/2020
< 0.0005
< 0.000078
< 0.000078
< 0.002
8/14/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
11/11/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
2/23/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
2/23/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
GW-18D
8/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
11/10/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
2/16/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/9/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
9/7/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
9/7/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
11/29/2022
< 0.00050
< 0.000100
< 0.000200
0.00054
2/14/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
5/16/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
9/14/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
10/26/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
25
-------
GW-19S
0.006
0.005
0.004
^53
ฃ,
-------
GW-19D
0.006 GW-19D 0.06
0.005 0.05
0.004 f- 0.04
ao
ฃ
ao
ฃ
Q.
00 CO to 4^ O Cn
O
Benzene
Benzene CUO
Naphthalene
Naphthalene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
mq/L
Benz(a)anthracene
mq/L
Benzo(a)pyrene
mq/L
Naphthalene
mq/L
2/19/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
5/13/2020
< 0.0005
< 0.000073
< 0.000073
< 0.002
5/13/2020
< 0.0005
< 0.000071
< 0.000071
< 0.002
8/13/2020
< 0.0005
< 0.0001
< 0.0001
0.00032
11/10/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
11/10/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
2/23/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
GW-19D
5/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
8/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
11/10/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
2/16/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/9/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
9/7/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
11/29/2022
< 0.00050
< 0.000100
< 0.000200
0.00047
2/14/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
5/16/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
9/14/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
10/26/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
27
-------
GW-20
0.0012
0.0010
ao 0.0008
ฃ.
CD
C
u
ฃ 0.0006
c 0.0004
(u
CO
0.0002
0.0000 lซ-
GW-20
O
NJ
NJ
O
NJ
O
o
00
NJ
O
NJ
O
O
UJ
o
NJ
O
NJ
O
tO
NJ
O
NJ
O
4^
NJ
O
NJ
NJ
O
NJ
0.0030
o
Ln
NJ
o
NJ
0.0025
0.0035
Ctf)
ฃ
ฆ 0.0020 u
c
(D
i
Q.
0.0015 ^
o
M
c
(D
CO
- 0.0010
0.0005
0.0000
Benz(a)anthracene
Benz(a)anthracene CUO
Benzo(a)pyrene
Benzo(a)pyrene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
mq/L
Benz(a)anthracene
mq/L
Benzo(a)pyrene
mq/L
Naphthalene
mq/L
2/19/2020
< 0.0005
< 0.0001
0.000107
< 0.002
5/13/2020
< 0.0005
0.000129
0.000337
< 0.002
8/14/2020
< 0.0005
0.000195
0.000648
< 0.002
11/10/2020
< 0.0005
0.000141
0.000505
< 0.002
2/23/2021
< 0.0005
< 0.0001
0.000238
< 0.002
5/11/2021
< 0.0005
0.000671
0.00223
< 0.002
5/11/2021
< 0.0005
0.000388
0.00135
< 0.002
GW-20
8/11/2021
< 0.0005
0.000565
0.00193
< 0.002
11/10/2021
< 0.0005
0.000316
0.000893
< 0.002
2/16/2022
< 0.0005
0.000693
0.00224
< 0.002
5/9/2022
< 0.0005
0.000088
0.000337
< 0.002
9/7/2022
< 0.00050
0.000921
0.00271
< 0.00200
11/29/2022
< 0.00050
0.000460
0.00167
0.00047
2/14/2023
< 0.00050
0.000650
0.002820
< 0.00200
5/16/2023
< 0.00050
0.000155
0.000684
< 0.00200
9/14/2023
< 0.00050
0.000976
0.00315
< 0.00200
10/26/2023
< 0.00050
0.000314
0.00111
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
Detections of PAHs at GW-20 likely not related to MGP.
GW-20 is a shallow monitoring well
approximately 0.25 miles downgradient
BTEX and VOCs largely not detected in
samples collected from GW-20
28
-------
GW-21
0.00025
0.00020
ao
ฃ.
1
NJ
O
NJ
O
to
NJ
O
NJ
O
4^
NJ
O
NJ
NJ
00
NJ
O
NJ
O
Ln
NJ
o
NJ
Benz(a)anthracene
Benz(a)anthracene CUO
Benzo(a)pyrene
Benzo(a)pyrene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
mq/L
Benz(a)anthracene
mq/L
Benzo(a)pyrene
mq/L
Naphthalene
mq/L
2/20/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
5/12/2020
< 0.0005
< 0.000071
< 0.000071
< 0.002
8/14/2020
< 0.0005
0.000072
0.00007
< 0.002
11/11/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
2/24/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/12/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
GW-21
8/11/2021
< 0.0005
< 0.0001
0.00012
< 0.002
11/9/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
2/16/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/11/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
9/7/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
11/29/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
2/14/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
5/17/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
9/15/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
10/27/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
29
-------
GW-22D
0.006
0.005
0.004
CbO
-------
GW-22S
0.006
0.005
0.004
euo
ฃ.
-------
GW-22S
0.00025
0.00020
Ctf)
(D
C
(D
U
ro
0.00015
0.00010
c
(D
CO
0.00005
0.00000
GW-22S
0.00025
0.00020
Ctf)
0.00015 J.
(D
C
(D
Q.
ro
0.00010 o
N
C
-------
GW-25
0.006
0.005
0.004
CuO
-------
GW-26
0.006
0.005
0.004
0.002
0.001
0.000
-
1
s
o
NJ
NJ
O
NJ
O
r 0.06
0.05
0.04
tLO
ฃ
Naphthalene
Naphthalene CUO
ERM
Ameren Taylorville 2020-2023 GWM results
Sample date
Benzene
mq/L
Benz(a)anthracene
mq/L
Benzo(a)pyrene
mq/L
Naphthalene
mq/L
2/19/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
5/13/2020
< 0.0005
< 0.000071
< 0.000071
< 0.002
8/13/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
11/10/2020
< 0.0005
< 0.0001
< 0.0001
< 0.002
2/24/2021
< 0.0005
< 0.0001
< 0.0002
0.00052
5/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
GW-26
8/12/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
11/8/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
2/15/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/10/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
9/6/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
11/28/2022
< 0.00050
< 0.000100
< 0.000200
< 0.00200
2/13/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
5/15/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
9/15/2023
< 0.00050
< 0.000100
< 0.000200
0.00069
10/26/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Bolded results indicate detection
above laboratory reporting limits.
-------
GW-101S, GW-102S/D, GW-103S/D (Abandoned)
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mq/L
mq/L
mq/L
mq/L
GW-101S
5/13/2020
< 0.0005
< 0.000078
< 0.000078
< 0.002
5/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/10/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/16/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mq/L
mq/L
mq/L
mq/L
5/10/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
GW-102D
5/13/2020
< 0.0005
< 0.000074
< 0.000074
< 0.002
5/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/10/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/16/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mq/L
mq/L
mq/L
mq/L
GW-102S
5/13/2020
< 0.0005
< 0.000071
< 0.000071
< 0.002
5/11/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/10/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/16/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mq/L
mq/L
mq/L
mq/L
5/12/2020
< 0.0005
< 0.000071
< 0.000071
< 0.002
GW-103D
5/12/2020
< 0.0005
< 0.00008
< 0.00008
< 0.002
5/12/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/11/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/17/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
Sample date
Benzene
Benz(a)anthracene
Benzo(a)pyrene
Naphthalene
mq/L
mq/L
mq/L
mq/L
GW-103S
5/12/2020
< 0.0005
< 0.000073
< 0.000073
< 0.002
5/12/2021
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/11/2022
< 0.0005
< 0.0001
< 0.0002
< 0.002
5/17/2023
< 0.00050
< 0.000100
< 0.000200
< 0.00200
GW-103S and GW-103D
have been abandoned
Ameren Taylorville 2020-2023 GWM results
35
-------
APPENDIX C - FIGURES AND SITE PHOTOS
Site Inspection Photos
Site Inspection Checklist
IC Map
25
-------
Taylorville - City Limits
Taylorville Township
Residential
Manners Park
Residential
ille Township
orville - City Limits
r f
r:
ซฆ
r JT
1' t
ซ
Site
r
ฆ if1
i* i
I1 1
li ฆ
!r* I
\Recreational\
Within City Limits
Legend
City Boundary
Parent Parcel Boundary
Site Boundary
Type Zoning Classification
\Forested[
Figure 1
Site Location and
Surrounding Land Use
Ameren Taylorville MGP Site
Taylorville Township
Christian County, IL
Source: Esri - World Topoographic Map; GCS NAD 1983 2011
Environmental Resources Management
www .erm.com
ERM
-------
Treatment
Building
West Extraction Well
Source: Esri - World Topoographic Map; NAD 1983 2011 StatePlane Illinois West FIPS 1202 Ft US
East Extraction Well
2006-2007 ISCO Area
1987 Excavation Area
Legend
Parent Parcel Boundary
Site Boundary
1987 Excavation Area
I.~ 2006-2007 ISCO Treatment Area
2010-2012 ISCO Treatment Area
Pump & Treat Extraction Wells (1995-Present)
Note:
ISCO - In Situ Chemical Oxidation Treatment
Figure 4
Historical Remediation Areas
Ameren Taylorville MGP Site
Taylorville Township
Christian County, IL
Environmental Resources Management
www .erm.com
ERM
-------
Figure 3
Historical Site Layout Map
Ameren Taylorville MGP Site
Taylorville Township
Christian County, IL
Environmental Resources Management
www .erm.com
ERM
Source: Esri - World Topoographic Map; NAD 1983 2011 StatePlane Illinois West FIPS 1202 Ft US
-------
OSWERNo. 9355.7-03B-P
Tmnranre. Taxes anH l.irpnses - TMs in dudes items such as liability and sudden and accidental
insurance, real estate taxes on purchased land or right-of-way, licensing fees for certain
technologies, and permit renewal and reporting costs.
Other Costs - This includes all other items which do not fit into any of the above categories.
[This page intentionally left blank.]
Please note that "O&M" is referred to throughout this checklist. At sites where Long-Term
Response Actions are in progress, O&M activities may be referred to as "system operations since
these sites are not considered to be in the O&M phase while being remediated under the Superfund
program.
Five-Year Review Site Inspection Checklist (Template)
(Working document for site inspection. Information may be completed by hand and attached to the
Five-Year Review report as supporting documentation of site states. "N/A" refers to "not
applicable.")
I. SITE INFORMATION
J-
: name: f
Location and Region: f ^
Agency, office, or o
review: E//4 '
Date of inspection: -3/ 2
SPA ID: (QC>^
any leading the five-year
C\> C is O
Remedy Includes: (Check all that apply)
~ Landfill cover/containment
^Access controls
^H%Itottonal controls
^Groundwater pump and treatment
~ Surface water collection and treatment
~ Other
iU.Jy
: 1 /
~ Monitored natural attenuation
fflSgroundwater containment
Vertical barrier walls
Attachments: ~ Inspection team roster attached map attached
II. INTERVIEWS (Check all that apply)
1. O&M site manager.
-------
OSWER No. 935S.7-03B-P
7 n&M OUA&r
-------
OSWERNo. 9355.7-03B-P
III ON-SITE DOCUMENTS & RECORDS VERIFIED (Check all that apply)
1.
O&M Documents y-
jZfO&Mmanual S'Readily mailable p-Up to date. ON/A
C3ซuilt drawings /ZTfeadily avaflable PWt0 date
EfMaintenance logs ^j3"Readily available ^.FTUp to date
~ ~
S? !>
2.
Site-Specific Health and Safety Plan
~'Contingency plan/emergency response p
^.PTReadily available
lan ~ Readily available
J2ffjp to date
~ Up to date
~ N/A
~ N/A
3.
O&M and OSHA Training Records
ftprrtarks,
^efReadily available
[3iJp to date
~ N/A
4.
Permits and Service Agreements
~ Ajr-discharge permit
/2rffluent discharge
~ Waste disposal, POTW OReac
n Other permits
"Rpmarks
~ Re^dfly available ~ UgjD-date
. j5iteadily available J3-Upto date.
My available ~ Up to date _J2fN/A
~ Readily available ~ Up to date
CH*IZa
~ N/A
~ N/A
5.
Gas Generation Records ~ Readily available ~ Up to date
6.
Settlement Monument Records
Rpmarks
~ Readily available
~ Up to date
jmiA
7.
Groundwater Monitoring Records
JaSadily available
JZ<3y to date
~ N/A
8.
Leachate Extraction Records
~ Readily available
~ Up to date
^0WK
9.
Discharge Compliance Records
~ Aij>
(effluent)
"Rpmarks
ORgadily available
/EfReadily available
~ Unto date
J3^p to date
' "N/A
10.
Daily Access/Security Logs ^
Ppmarks _ . **ป / // //
^efReadily available
^^2
-------
OSWERNo, 9355.7-03B-P
IV. O&M COSTS
O&M Organization
~ State in-house ~ Contractmior State
. ^ZTContractor for PRP
/ ~ FederalFacility in-house "" O Contractor for Federal Facility
~ Other,
2. 0&>9rCost Records
J3"1tead31y available -Blip to date
Funding mechanism/agreemenfm place
Original O&M cost estimate ~ Breakdown attached
Total annual cost by year for review period if available
From_
Frora_
From.
From.
From_
To ~ Breakdown attached
Date Date Total cost
To ~ Breakdown attached
Date Date Total cost
To ~ Breakdown attached
Date Date Total cost
Xo O Breakdown attached
Date Date Total cost
To ~ Breakdown attached
Date Date Total cost
Unanticipated or Unusually High O&M Costs During Review Period
Describe costs and reasons: _
fj jJ <
-------
OSWERNo. 9355.7-03B-P
C. Institutional Controls (ICs)
Implementation and enforcement
Site conditions imply ICs not properly implemented
Site conditions imply ICs not being fully enforced
Type of monitoring (
Frequency
Responsibli
Contact
~ N/A
~ N/A
e? am
"es DNo
Reporting is up-to-date
Reports are verified by the lead agency
Specific requirements in deed or decision documents have been met 3^es ONo
Violations have been reported ' CYes ONo
Other problems or suggestions: ~ Report attached
~ N/A
~ N/A
~ N/A
2.
Adequacy
Remarks
ytflCs are adequate ~ ICs are inadequate
ON/A
D. General
L Vandalism/trespassing ^0iocation,shown on site map
Remarks
P No vandalism evident
2. Land use changes on site ~ N/A
Remarks
3.
Land use changes off siteD N/A , /
Remarks A.J
VI. GENERAL SITE CONDITIONS
A. Roads ja^pplicable ~ N/>-^
^Location shown on site map
1. Roads damaged
Remarks
oads adequateO N/A
-------
\ / OSWERNo. 9355.7-03B-P
\ I / f
V )U U-
B. Other Site Conditions / W
-------
OSWERNo. 9355.7-03B-P
VII. LANDFILL COVERS ~ Applicable jafS/A
A. Landfill Surface
1.
Settlement (Low spots) ~ Location shown on site map
Areal extent Depth
~ Settlement not evident
Remarks
2,
Cracks ~ Location shown on site map
Lengths Widths Depths
~ Cracking not evident
Remarks
3.
Erosion ~ Location shown on site map
Areal extent Depth
O Erosion not evident
Remarks
4.
Holes ~ Location shown on site map
Areal extent Depth
~ Holes not evident
Remarks
5.
Vegetative Cover ~ Grass ~ Cover properly established ~ No signs of stress
~ Trees/Shrubs (indicate size and locations on a diagram)
Remarks
6.
Alternative Cove: (armored rock, concrete, etc.) ~ N/A
Remarks
7.
Bulges ~ Location shown on site map
Areal extent Heieht
~ Bulges not evident
Remarks
8.
Wet Areas/Water Damage ~ Wet areas/water damage not evident
~ Wet areas ~ Location shown on site map Areal
extent
~ Ponding ~ Location shown on site map Areal
extent
~ Seeps ~ Location shown on site map Areal
extent
~ Soft subgrade ~ Location shown on site map Areal
extent
Remarks
9.
Slope Instability ~ Slides ~ Location shown on site map
Areal extent
Remarks
~ No evidence of slope instability
-------
OSWER No. 9355.7-03B-P
B.
Benches ~ Applicable ~ N/A
(Horizontally constructed mounds of earth placed across a steep landfill side slope to interrupt the slope
In order to slow down the velocity of surface runoff and intercept and convey the runoff to a lined
channel.)
1.
Flows Bypass Bench
Remarks
~ Location shown on site map ~ N/A or okay
2.
Bench Breached
Remarks
~ Location shown on site map ~ N/A or okay
3.
Bench Overtopped
Remarks
~ Location shown on site map ~ N/A or okay
C.
Letdown Channels ~ Applicable DN/A
(Channel lined with erosion control mats, riprap, grout bags, or gabions that descend down the steep side
slope of the cover and will allow the runoff water collected by the benches to move off of the landfill
cover without creating erosion gullies.)
1.
Settlement
Areal extent
~ Location shown on site map ~ No evidence of settlement
Depth
Remarks
2.
Material Degradation
Material tvpe
~ Location shown on site map ~ No evidence of degradation
Areal extent
Remarks
3.
Erosion
Area! extent
~ Location shown on site map ~ No evidence of erosion
Depth
Remarks
-------
OSWERNo. 9355.7-03B-P
4.
Undercutting ~ Location shown on site map ~ No evidence of undercutting
Areal extent Depth
Remarks
5.
Obstructions Tvpe
~ No obstructions
~ Location shown on site map
Size
Areal extent
Remarks
6. Excessive Vegetative Growth Type
~ No evidence of excessive growth
~ Vegetation in channels does not obstruct flow
~ Location shown on site map Area! extent.
Remarks
D. Cover Penetrations ~ Applicable DN/A
1. Gas Vents ~ Active ~ Passive
~ Properly secured/locked G Functioning O Routinely sampled ~ Good condition
~ Evidence of leakage at penetration ~ Needs Maintenance
~ N/A
Remarks
2. Gas Monitoring Probes
~ Properly secured/locked ~ Functioning ~ Routinely sampled ~ Good condition
~ Evidence of leakage at penetration ~ Needs Maintenance DN/A
Remarks
3, Monitoring Wells (within surface area of landfill)
~ Properly secured/locked ~ Functioning ~ Routinely sampled ~ Good condition
~ Evidence of leakage at penetration ~ Needs Maintenance ON/A
Remarks
4. Leachate Extraction Wells
~ Properly secured/locked O Functioning ~ Routinely sampled ~ Good condition
~ Evidence of leakage at penetration ~ Needs Maintenance DN/A
Remarks
5. Settlement Monuments ~ Located ~ Routinely surveyed DN/A
Remarks
-------
OSWERNo. 9355.7-03B-P
E, Gas Collectiop and Treatment ~ Applicable CN/A
1. Gas Treatment Facilities
~ Flaring ~ Thermal destruction ~ Collection for reuse
O Good conditionO Needs Maintenance
Remarks
2. Gas Collection Wells, Manifolds and Piping
~ Good conditionO Needs Maintenance
Remarks
Gas Monitoring Facilities (e,g,, gas monitoring of adjacent homes or buildings)
~ Good conditionO Needs Maintenance ON/A
Remarks
F, Cover Drainage Layer ~ Applicable ON/A
1,
Outlet Pipes Inspected
~ Functioning on/A
Remarks
2.
Outlet Rock Inspected
~ Functioning ~ N/A
Remarks
G.
Detention/Sedimentation Ponds
~Applicable DN/A
Siltation Areal extent Depth DN/A
~ Siltation not evident
Remarks
2. Erosion Areal extent Depth,
~ Erosion not evident
Remarks
3. Outlet Works ~ Functioning ON/A
Remarks
4- Dam ~ Functioning ON/A
Remarks
-------
OSWERNo. 93SS.7-03B-P
H. Retaining Walls ~ Applicable CN/A
1. Deformations ~ Location shown oil site map ~ Deformation not evident
Horizontal displacement Vertical displacement
Rotational displacement
Remarks
2. Degradation ~ Location shown on site map ~ Degradation not evident
Remarks
I. Perimeter Ditches/Off-Site Discharge ~ Applicable QN/A
1. Siltation ~ Location shown on site map ~ Siltation not evident
Areal extent Depth
Remarks
2. Vegetative Growth ~ Location shown on site map ~ N/A
~ Vegetation does not impede flow
Areal extent Type
Remarks
3. Erosion ~ Location shown on site map ~ Erosion not evident
Areal extent Depth
Remarks
Discharge Structure ~ Functioning ~ N/A
Remarks
VIII. VERTICAL BARRIER WALLS ~ Applicable A
1. Settlement O Location shown on site map ~ Settlement not evident
Areal extent Depth
Remarks
2. Performance MonitoringType of monitoring
~ Performance not monitored
Frequency ~ Evidence of breaching
Head differential
Remarks
-------
OSWER No. 9355.7-03B-P
IX. GROUNDWATER/SURFACE WATER REMEDIES ^Applicable ON/A
A. Groundwater Extraction Wells, Pumps, and Pipelines J3^pplicable O N/A
1.
Pumps^Welhead Plumbing, and Electrical -
yp^ood conditionOAdlrequired wells properly operating ~ Needs Maintenance ~ N/A
Remarks ' H f,
^Vok/ I
2.
Extinction System Bipelines, Valves, Valve Boxes, and Other Appurtenances
JzGao& conditioij^Needs Maintenance
Remarks "
3.
SpjpeParts and Equipment^-""
ETReadily available ,2"6ood condition ~ Requires upgrade ~ Needs to be provided
Remarks
B. Surface Water Collection Structures, Pumps, and Pipelines ~ Applicable ygfN/A
1,
Collection Structures, Pumps, and Electrical
~ Good condition^ Needs Maintenance
Remarks
2.
Surface Water Collection System Pipelines, Valves, Valve Boxes, and Other Appurtenances
~ Good condition^ Needs Maintenance
Remarks
3.
Spare Parts and Equipment
~ Readily available ~ Good condition" Requires upgrade ~ Needs to be provided
Remarks
-------
OSWERNo. 9355.7-03B-P
c.
Treatment System ^plicable DN/A
1,
Treatment Train (Check components that apply)
~ Metals removal ~ Oil/water separation ~ Bioremediation
~Air strippipg , / /Q~*. 1 ~ Carbon adsorbers
Palters X P*ฅs (3;/
~ Additive ('e.g.. chelation agaiL flocculent)
~ Others
^dpod condition ~ Needs Maintenance
~Sampling ports properly marked and functional
^jZ&unpling/maintenance log displayed and tip to date ,
Equipment property identified " /ฃ;//,, //, ,^
' JSDuantitv or groundwater treated annually ' / / /' J
O Ouantitv of surface water treated annually -
Remarks
2.
Electrical Enclosurej^ffid Panels (properly rated and functional)
~ N/A - " ^ETGood conditionD Needs Maintenance
Remarks
3.
Tanks, Vaults, Storage Vessels ,
~ N/A ^JZGood conditiopg^Proper secondary containment ~ Needs Maintenance
Remarks ^
4.
Discharge Structure apd Appurtenances
~ N/A Q-Good conditionD Needs Maintenance
Remarks
5.
Treatment Building^j^
~ Wth ^etfood condition (esp. roof and doorways) ~ Needs repair
JSCfiemicals and equipment properly stored
Remarks \ /.* r
rtrl
6.
Momlering Wells (pump andtpeatfnent remedy)/ ^
Draperly secured/lockedSTunctioning _J2lฃoutinely sampled ^.ETCood condition
J2fhk1 required wells located O Needs Maintenance ~ N/A
Remarks ^ / J
D. Monitoring Data
1.
Morjiterfing Data
JS'lsroutinely submitted on time J2H& of acceptable quality
2.
Moprforing data suggests; X
^^Groundwater plume is effectively contained /^Contaminant concentrations are declining
-------
D. Monitored NaturalAttenuatlon ^//A
OSWER No, 93SS.7-03B-P
Jฑ
1.
Monitoring Wells (natural attenuation remedy)
~ Properly secured/locked ~ Functioning ~ Routinely sampled ~ Good
~ All required wells located O Needs Maintenance condition^ ^
Remarks
X. OTHER REMEDIES
II thffle are remedies applied at the site which are not covered above, attach an inspection sheet describing
the physical nature and condition of any facility associated with the remedy. An'example would be soil
vapor extraction. - > 7 ^
XI. OVERALL OBSERVATIONS /
A. Implementation of the Remedy
relating to whether foe remedy is effective and functioning as designed.
Begin with a brief statement of what the remedyls to accomplish (i.e., to contain contaminant plume,
infiltration and gas emission, etc.).
[as emission, etc.). , { / /
A?/^r.
aASf ^ J* ^ * ^V. *jr J? ~
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B. Adequacy of O&M
Desoibe issues and observations related to the implementation and scope of O&M procedures. In
particular, discuss their relationship to the current and long-term protectiveness of the remedy.
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OSWERNo. 9355.7-03B-P
Early Indicators of Potential Remedy Problems
Describe issues and observations such as unexpected changes in the cost or scope of O&M or a high
frequency of unscheduled repairs, that suggest that the protectiveness of the remedy may be
compromised in the future,
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D. Opportunities for Optimization
Describe passible opportunities for optimization in monitoring tasks or the operation of the remedy.
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Ille Township
Taylorvillo - City Limits
TaytorvUI* Township
Pin 17-13*27-331 -005-00
Owner. Ameren Illinois Company
Address: 917 S Webster Street
Taytorvile, IL 62568
2.56 acres
PIN 17-13-27-300-001-00
Owner Ameren: Illinois Company
Address: Taytorvile, IL 62568
15.51 acres
PIN 17-13-34-200-003-01
Ownet Ameren Illinois
Company
20.29 acres
PIN 17-13-34-100-01Q-QQ
Owner Ameren Illinois Company
Address: Taytorvile, IL 62568
2.74 acres
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