FIFTH FIVE-YEAR REVIEW REPORT FOR
CLEBURN STREET WELL SUPERFUND SITE
GRAND ISLAND, HALL COUNTY, NEBRASKA
£ U ro
Prepared by
U.S. Environmental Protection Agency
Region 7
Lenexa, Kansas
Digitally signed by
DORPBT ll IDPPMQ ROBERT JURGENS
ROBERT JURGENS Date; 2023 08 21
16:25:32 -05'00'
Robert D Jurgens, Director
Superfund and Emergency Management Division
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Table of Contents
LIST 01 ABBREVIATIONS & ACRONYMS 1
I. INTRODUCTION 2
FIVE-YEAR REVIEW SUMMARY FORM 4
II. RESPONSE ACTION SUMMARY 4
Basis for Taking Action 4
Response Actions 6
Status of Implementation 10
Institutioanl Controls Summary 11
Systems Operations/Operation & Maintenance 11
III. PROGRESS SINCE THE LAST REVIEW 13
IV. FIVE-YEAR REVIEW PROCESS 15
Community Notification, Involvement & Site Interviews 15
Data Review 15
Site Inspection 19
V. TECHNICAL ASSESSMENT 19
QUESTION A: Is the remedy functioning as intended by the decision documents? 19
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? 22
Question C: Has any other information come to light that could call into question the protectiveness of
the remedy? 25
VI. ISSUES/RECOMMENDATIONS 26
OTHER FINDINGS 26
VII. PROTECTIVENESS STATEMENT 27
VIII. NEXT REVIEW 28
APPENDIX A - REFERENCE LIST
APPENDIX B - SITE LOCATION MAP
APPENDIX C - SITE INSPECTION
APPENDIX D - REPORTS
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LIST OF ABBREVIATIONS & ACRONYMS
ARAR
Applicable or Relevant and Appropriate Requirement
AS/SVE
air sparge/soil vapor extraction
Bgs
below ground surface
CERCLA
Comprehensive Environmental Response, Compensation, and Liability Act
COC
Contaminant of Concern
cis-1,2 DCE
cis-1,2 dichloroethene
EPA
United States Environmental Protection Agency
FYR
Five-Year Review
HI
Hazard Index
IC
institutional control
ISCO
in-situ chemical oxidation
ISTR
in-situ thermal remediation
LNAPL
light non-aqueous phase liquid
LTRA
long term response action
MCL
Maximum Contaminant Level
mg/kg
milligram per kilogram
MNA
monitored natural attenuation
NDEE
Nebraska Department of Environmental and Energy
NPL
National Priorities List
O&M
operations and maintenance
OHM
One Hour Martinizing facility
OU
operable unit
PCE
tetrachl oroethene
RP
potentially responsible party
RA
Remedial Action
RAO
remedial action objective
RD
Remedial Design
RI
Remedial Investigation
RSL
Regional Screening Level
SVE
soil vapor extraction
1,1,1-TCA
1,1,1 -trichloroethane
TCE
Trichloroethene
TTZ
Thermal Treatment Zone
VI
vapor intrusion
VIMS
vapor intrusion mitigation system
VISL
vapor intrusion screening level
VOC
volatile organic compound
l-ig/kg
microgram per kilogram
^g/L
microgram per liter
|ig/m3
microgram per cubic meter
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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 FYRs are documented in FYR reports. In
addition, FYR reports identify issues found during the review, if any, and document recommendations to
address them.
The United States Environmental Protection Agency prepares FYRs pursuant to the Comprehensive
Environmental Response, Compensation, and Liability Act (CERCLA) Section 121(c), consistent with
the National Contingency Plan 40 Code of Federal Regulation Section 300.430(f)(ii) and considering the
EPA's policy.
This is the fifth FYR for the Cleburn Street Well Superfund Site. The triggering action for this policy
review is the completion date of the previous FYR, which was signed on August 21, 2018. The FYR has
been prepared because hazardous substances, pollutants, or contaminants remain at the Site above levels
that allow for unlimited use and unrestricted exposure.
The Site consists of five Operable Units (OUs):
OU1: One-Hour Martinizing (Soils) (Delisted from the NPL)
OU2: One-Hour Martinizing (Groundwater)
OU3: Liberty Cleaners (Soil and Groundwater)
OU4: Ideal Cleaners (Soil and Groundwater) (Delisted from the NPL)
OU5: Soil and Groundwater at the Former Nebraska Solvent Company
OU1 and OU4 achieved their remedial action objectives (RAOs) and have been deleted from the
National Priorities List (NPL) and no actions have been completed for both OU1 and OU4 during this
reporting period. For that reason, they will not be evaluated in this FYR. OUs 02, 03, and 05 will be
addressed in this FYR.
The Cleburn Street Well FYR was led by David Wennerstrom, EPA Remedial Project Manager (RPM).
Participants included Randy Brown (hydrogeologist), Kelly Schumacher (human health risk assessor),
Vanessa Madden (ecological risk assessor), and Billy Wesley NDEE Project Manager. Matt Sugar,
environmental consultant for the Union Pacific Railroad (UPRR), the potentially responsible party
(PRP) for OU5, was notified of the initiation of the five-year review. The review began on August 25,
2022.
Site Background
The Cleburn Street Well Superfund Site (Site) is located within the urban setting of Grand Island,
Nebraska. Grand Island's 2016 census reports a population of 51,517. The Site is situated in central
Nebraska, approximately two miles north of the Wood River and approximately seven miles northeast of
the Platte River. The Site encompasses a portion of the downtown area and is surrounded by a variety of
light industries, commercial businesses, and residential dwellings. Surface runoff is controlled by man-
made features typically present in a city (storm sewers/gutters) and is eventually discharged into the
Wood River.
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The Site consists of four distinct volatile organic compound (VOC) release areas located within the
central portion of the city of Grand Island, Nebraska. Three of the source areas are locations of
commercial dry-cleaning businesses: One-Hour Martinizing (OHM) (OUs 1 and 2), Liberty Cleaners
(OU3), and Ideal Cleaners (OU4). The fourth release area is the location of the former Nebraska Solvent
Distribution Company (OU5). The Site Location Map figure provided in Appendix B depicts the
locations of the four source areas within Grand Island.
The EPA is performing cleanup actions relating to the dry cleaner operations at OUs 1 through 4 and the
UPRR, as owner of the Nebraska Solvent Distribution Company property and a PRP, is performing the
cleanup actions for OU5. The EPA initially established OU1 with the 1996 Record of Decision (ROD)
to address soil and groundwater contamination at all three dry cleaner locations; the Site was later
subdivided into OUs 1 through 4, as indicated above. The former solvent company became OU5.
The Site is located in an urban setting consisting of a mix of single-family residential units, light
manufacturing and retail shops. Land use over the past 15 years, as indicated by the previous FYRs,
appears to have remained relatively unchanged.
The OU2 (former OHM dry cleaner) is located on a property which includes a structure with concrete
slab on grade construction. The former OHM dry cleaner building is currently being used temporarily as
an office space by the EPA during the implementation of the in-situ thermal remediation remedy for
OU2. A used tire shop operates in an adjacent building. The immediate vicinity of the former OHM
facility predominantly consists of commercial businesses; however, residential properties are also
present.
The OU3 (former Liberty Cleaners dry cleaner) is situated in a predominately residential area consisting
of a large concrete paved parking lot and a tire maintenance business that now operates at the property.
The OU5 (former Nebraska Solvent Company) consists of two parcels (east and west) on property
owned by the UPRR. The west parcel is occupied and is covered with soil fill and is not paved.
Buildings in the east parcel are used by the city of Grand Island and Mid Plains Construction and UPRR
owns the land. Grand Island City Electric uses a building to store and maintain trucks and equipment
and Mid-Plains Construction uses a building for offices and storage space. OU5 is located in an area
which is predominantly commercial.
The state of Nebraska has designated the aquifer impacted by the Site as a Class GA Groundwater
Supply. Class GA Groundwater is a groundwater supply which is currently being used as a public
drinking water supply or is proposed to be used as a public drinking water supply. The contamination
detected caused the state of Nebraska to designate the Site as a Remedial Action Class 1, requiring the
"most extensive remedial action measures" to clean up the groundwater to drinking water quality
suitable for all beneficial uses.
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FIVE-YEAR REVIEW SUMMARY FORM
SITE IDENTIFICATION
Site Name: Cleburn Street Well Site
EPA ID: NED981499312
Region: 7
State: Nebraska
City/County: Grand Island/Hall
NPL Status: Final
Multiple OUs?
Yes
Has the Site achieved construction completion?
Yes
Lead agency: EPA
Author name (Federal or State Project Manager): David Wennerstrom
Author affiliation: EPA Region 7
Review period: August 2018 - August 2022
Date of site inspection: November 17, 2022
Type of review: Policy
Review number: 5
Triggering action date: August 21, 2018
Due date (five years after triggering action date): August 21, 2023
II. RESPONSE ACTION SUMMARY
Basis for Taking Action
Contamination at the Cleburn Street Well Superfund Site was first discovered in March 1986 when the
Nebraska Department of Health detected tetrachloroethene (PCE) at the public drinking water supply
well located at Cleburn Street. The EPA became involved in 1987 and conducted a preliminary
assessment with subsequent site investigations resulting in the identification of four separate source
areas: three dry cleaning facilities - OHM, Liberty Cleaners, and Ideal Cleaners; and a former solvent
distribution company (Nebraska Solvent Company). These source areas are all within an approximate
1,960 feet radius of the Cleburn Street well, which is located near the intersection of Cleburn Street and
North Front Street.
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The EPA follow-on investigations identified significant PCE and trichloroethene (TCE) contamination
(as well as other VOCs) in soil and groundwater at the OHM and former solvent distribution location.
The release of hazardous substances resulted in the contamination above Maximum Contaminant Levels
(MCL) of the aquifer providing potable water to the city of Grand Island. This necessitated the
abandonment of the Cleburn Street public water supply well and subsequently the abandonment of both
the Lincoln and Pine Street public supply wells, also located in the area.
Three human health risk assessments have been completed. The first assessment, completed in
conjunction with the 1993 Cleburn Street Well Site RI Report, evaluated risk at the three dry cleaner
properties. Current groundwater exposures are not likely because city residents have access to city water
and are not known to be using private wells; and soil contamination is below ground and is not
accessible for direct contact exposures. Although residents are not believed to be currently exposed to
contamination, the risk assessment evaluated several potential exposure pathways. Future residents
could be exposed to contaminated groundwater via ingestion, inhalation, and direct contact if private
wells are installed and used in place of city water; and future development could also result in direct
contact, ingestion, and inhalation exposures to contaminated soils.
Evaluating the three dry cleaner sites, the first risk assessment determined that residential use of
contaminated groundwater from the OHM source area presented the highest estimated risks for both
cancer and noncancer health effects, with an estimated excess cancer risk of 2xl0_1 and a noncancer
hazard index (HI) of 700. This risk includes all exposure pathways associated with drinking water
including ingestion, inhalation, and dermal contact. Both PCE and TCE substantially contribute to this
risk. The carcinogenic risk associated with exposure to soil at the OHM source was low with an
estimated excess cancer risk of 2xl0"7.
The second risk assessment was conducted for OU5 in 1998 and is presented in the 2000 OU5 RI
Report. The risk assessment focused on health effects for current and future on-site workers, workers at
adjacent properties, and future on-site residents. Since contamination at OU5 is almost completely
confined to depths below the ground surface, current on-site and off-site workers do not have direct
contact with soil or ground water. The only potential pathway for the current on-site worker is inhalation
of VOCs emanating from soil gas into indoor breathing air. In addition to the inhalation pathway, the
future on-site worker and/or resident may be exposed to contaminated ground water in the unlikely
event that a commercial or industrial well were to be installed. Future construction workers could
potentially be exposed to chemicals in soil via incidental ingestion, dermal contact, and inhalation of
volatiles and dust. This 1998 risk assessment estimated an excess cancer risk of 2xl0"2 for an adult
resident scenario and a HI of 200 for an off-site child resident scenario. The OU5 estimated cancer and
noncancer risks are based upon exposure to groundwater and are driven by PCE.
The third risk assessment, conducted in support of the 2011 OU2 Focused RI, assesses risk associated
with the OHM site. Using the reasonable maximum exposure (RME) scenario for exposures to subslab
soil gas via VI, an excess cancer risk of 8xl0"2 and an HI of 38 were determined for the current and
future industrial worker; and an excess cancer risk of 5x10"1 and an HI of 450 were determined for the
future child and adult resident (EPA, 2012). These levels are well above their protective risk values. For
the adult and child, the chemicals that are the drivers for carcinogenic risk are benzene, bromo-
dichloromethane, carbon tetrachloride, chloroform, dibromochloromethane, ethylbenzene, naphthalene,
PCE, and TCE. The noncarcinogenic hazard drivers are carbon tetrachloride, chloroform, and PCE. The
highest cancer risks occur from ingestion and dermal exposure to groundwater used as tap water and
inhalation of indoor air as estimated from sub-slab soil gas; the highest noncancer hazards occur from
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ingestion and inhalation exposure to groundwater used as tap water and inhalation of indoor air. For
occupants of the former OHM building, under RME exposure conditions, an unacceptable cancer risk of
4xl0"4 is based on modeled indoor air concentrations from soil gas; however, the risk associated with
measured indoor air is 2xlO"7 The risk driver is PCE via inhalation of indoor air based on modeled soil
gas concentrations. No unacceptable noncancer hazard was identified.
A screening level ecological risk assessment was performed during the (1998 and 1999) Cleburn
Baseline Risk Assessment Addendum. It was determined that there were no ecological exposure
pathways.
Response Actions
Operable Units 1-4
Based on the potential future risks associated with drinking water including ingestion, inhalation, and
dermal contact, the EPA implemented a Non-Time-Critical Removal Action in August 1993 to address
the most highly contaminated groundwater at the OHM source area. The action included installation of a
groundwater extraction well near the OHM source area with discharge piping connected to the sanitary
sewer. Groundwater was extracted at a rate of approximately 50 gallons per minute and discharged
directly to the sanitary sewer for treatment at the city's publicly owned treatment works. This
containment action continued until a permanent groundwater extraction and treatment system (GET)
was constructed in 1998 in accordance with the selected OU2 remedy in the 1996 Record of Decision
(ROD).
Operable Unit 5
The initial ROD for the Cleburn Street Well Site was signed in June 1996. It is noted that this ROD
references OU1 as encompassing all three dry cleaner locations (OHM, Liberty Cleaners, and Ideal
Cleaners). Later, these sites were differentiated into OUs 1 through 4. The 2012 ROD Amendment
addresses OU2 (groundwater) contamination associated with the OHM property.
Remedial Action Objectives (OUs 1-4)
The RAO for groundwater, defined in the 1996 ROD, is restoration of the shallow aquifer to its
designated use as a drinking water source. The 1996 ROD Summary states:
• The general RAO for groundwater which provides for the protection of human health includes
the prevention or minimization of ingestion of groundwater having a carcinogenic risk greater
than lxlO"6 and/or a HI for noncarcinogens greater than 1. The specific remediation goals which
would achieve this objective are the MCLs for the primary COCs. The RAO for groundwater
which is protective of the environment involves the restoration of groundwater quality to below
MCLs for all COCs which have MCLs.
The following RAO for soils is defined in the 1996 ROD:
• The RAO for soil which is protective of human health includes the prevention or minimization of
direct contact with soils having a carcinogenic risk greater than 1 x 10"6, and/or an HI for
noncarcinogens greater than 1. The specific remediation goals which would achieve this
objective have not been established. However, the agency's soil screening levels for the COCs
will be used as a guideline to determine the level of protectiveness achieved by the remedial
action. The soil RAO also includes the prevention of migration of contaminants from soil that
would result in groundwater contamination in excess of the MCLs.
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The 2012 ROD Amendment (OU2 groundwater) included the RAOs from the 1996 ROD; the ROD
Amendment added two additional RAOs:
• Prevent exposure through inhalation of vapors that exceed acceptable risk levels; and
• Contain and prevent or minimize further migration of the groundwater contaminant plume
Clean-up Levels (OUs 1-4)
Specific remediation goals for soil were not established in the 1996 ROD. In 2004, the EPA established
a site-specific cleanup goal of 0.89 milligrams per kilogram (mg/kg) for PCE, and 0.053 mg/kg for TCE.
OU2 COCs identified in the 2012 ROD Amendment are PCE, TCE, carbon tetrachloride and
chloroform. Cleanup goals for these COCs, per the ROD Amendment, are presented in Table 2-1
(below).
TABLE 2-1: 2012 ROD Amend
ment Cleanup Goals for Soil and Groundwater (OU2)
('onliimiiiiinl of C oncern
Soil C'loiinup (1021I (in«»/k«)
(irouiulwiilcr ( Icnnup (io:tl,
M< U.uji/1.)
PCE
0.890
5
TCE
0.053
5
carbon tetrachloride
--
5
chloroform
--
80
mg/kg - milligram per kilogram
|ig/L - microgram per liter
MCL - maximum contaminant level
no established cleanup goal
Remedy Components (OUs 1-4)
The selected remedies for OU1 (OHM soils) and OU2 (OHM groundwater), as described in the 1996
ROD, are:
• Monitoring of groundwater, discharged treated water, and air emissions;
• Institutional controls (ICs) to restrict groundwater use;
• Extraction of subsurface contaminants using soil vapor extraction (SVE);
• Treatment of extracted vapors by carbon adsorption;
• Extraction of groundwater containing contaminants above MCLs; and
• Treatment of extracted groundwater by on-site air stripping
The selected remedies for OU3 (Liberty Cleaners) and OU4 (Ideal Cleaners) are:
• Natural attenuation and groundwater monitoring for ten years;
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• ICs to restrict groundwater use and prevent exposures; and
• Contingency action: In-situ treatment of source soils by SVE and carbon adsorption
The 2012 ROD Amendment addresses OU2 (groundwater) contamination associated with the OHM
property. The ROD Amendment Declaration states that the remediation goals for COCs detected in
shallow subsurface soils have been achieved by operation of the SVE system installed per the 1996
ROD; however, a change to the groundwater remedy for OU2 was required due to remaining residual
source contamination located within the layer of saturated silt/silty-sand at a depth corresponding to the
groundwater-soil interface.
The major components of the selected amended remedy, as described in the ROD Amendment, include
the following:
• In-situ thermal treatment of groundwater and saturated subsurface soils at the contaminant source
area;
• Long-term treatment of the groundwater contaminant plume via in situ chemical and/or enhanced
biological remediation until the cleanup levels in groundwater for the COCs have been attained
and verified;
• Periodic groundwater monitoring until the groundwater has achieved the cleanup levels for
COCs in the area;
• Periodic vapor intrusion monitoring until the groundwater has achieved the cleanup levels for the
COCs in the area; and
• Installation of additional groundwater monitoring wells and/or sampling of additional public and
private wells, if needed, to further determine the extent of the COC contamination, evaluate
treatment processes and/or ensure protection of public health
OU5
The ROD for OU5 was signed in September 2001. OU5 encompasses contaminated soils and
groundwater at the Nebraska Solvent Company location. The 2009 OU5 ROD Amendment addresses
untreated soils in the west parcel of the Nebraska Solvent Company property.
The RAOs addressing the OU5 contaminated soils and groundwater stated in the 2001 ROD are to:
• Reduce or eliminate further contamination of the groundwater from the source;
• Restore the aquifer to drinking water standards within a reasonable time frame;
• Prevent further migration of groundwater contamination; and
• Reduce or eliminate sporadic polluting of the aquifer surface
The RAO of the 2009 ROD Amendment required reduction of VOC concentrations in soils to
concentrations meeting site-specific closure requirements as listed in Table 2-3.
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COCs identified in the 2001 OU5 ROD are PCE, TCE, c/.s- l ,2-dichloroethene (cis- 1,2-DCE), xylenes,
toluene, ethylbenzene and benzene. Table 2-2 provides the MCLs associated with each COC. No
cleanup levels were directly established for soils in the 2001 ROD; modeling was used to determine soil
cleanup concentrations such that soils will not be a source of groundwater contamination exceeding
COCs. The 2009 ROD Amendment established closure concentrations of VOCs in soils for the west
parcel excavation area. (Table 2-3).
TABLE 2-2 - OIT5 COC Cleanup Levels for Groundwater (2001 ROD)
C 'oiKillllillillll Ol' C OIHTI'll
Kn\ ironnicnlnl Medi:t
Miixiiiiiiin C'oiKiiiiiiiiiiiK I.cm'I
tetrachloroethene
Groundwater
5 (ig/L
trichloroethene
Groundwater
5 (ig/L
cis-1,2-dichloroethene
Groundwater
70 jig/L
xylenes
Groundwater
10,000 jig/L
toluene
Groundwater
1,000 jig/L
ethylbenzene
Groundwater
700 jig/L
benzene
Groundwater
5 (ig/L
LNAPL hydrocarbon
Groundwater
Sheen - no observable sheen
|ig/L - microgram per liter
TABLE 2-3 - OU5 ROD and ROD Amendment Soil Remediation Goals
C'oiKiiiniiiiinl of Concern
kisk-liiisoil Soil Cloiinup l.cxcl (in«/k*») l>rolecli\e of
(irouiHlwiilor1"
1,1,1 -trichloroethane
28.1
1,1 -dichloroethene
0.0006
1,2,4-trimethylbenzene
11.1
1,3,5 -trimethylbenzene
6.9
benzene
0.2
cis-1,2-dichloroethene (cis-1,2-DCE)
3.2
ethylbenzene
43.2
methylene chloride
0.37
tetrachloroethene
0.656
toluene
75.5
trans-1,2-dichloroethene
3.6
trichloroethene
0.17
vinyl chloride
0.12
xylenes
S<
1 Calculations for soil cleanup levels protective of leaching to groundwater (MCLs) presented in RD Work Plan
S< = Soil cleanup level was based on soil/water partitioning and the estimated soil ore water concentrations required to
exceed the groundwater MCL as soil pore water leaches to groundwater. However, the calculated soil ore water concentration
required to exceed a groundwater MCL was greater than the chemical solubility. Therefore, it is not possible to exceed
groundwater MCLs for this chemical by leaching from soil to groundwater based on current assumptions and existing
subsurface conditions.
mg/kg = milligram per kilogram
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The major components of the selected remedy for OU5 as described in the 2001 ROD are:
• The construction and operation of a single phase SVE system to remove PCE, TCE and cis-1,2-
dichloroethene (cz's-l,2-DCE) contained in the soils;
• The construction and operation of an air sparging (AS) system to address PCE, TCE and cis-1,2-
DCE in the groundwater and toluene, xylenes, ethylbenzene and benzene floating atop the
groundwater;
• Regularly scheduled soil, air, and groundwater monitoring;
• LNAPL Removal by bailing during all monitoring activities preceding, during, and after
completion of remediation;
• Institutional Controls in the form of deed restrictions to prohibit groundwater use and improper
subsurface construction on the UPRR properties; and
• Continuation of city of Grand Island Institutional Control Ordnance No. 8363 which prohibits
groundwater wells in the vicinity of OU5
As described in the 2009 OU5 ROD Amendment Declaration, the selected remedy enhances the 2001
ROD air sparge/soil vapor extraction (AS/SVE) remedy and includes:
• Excavation and thermal desorption of the contaminated shallow soil (4 to 5 feet) in the west
parcel of the Site;
• Reducing the concentrations of soil COCs to concentrations within the site-specific closure
requirements;
• Meeting federal and state standards, requirements, criteria or limitations that are determined to
be ARARs; and
• Restoring site grade and surfacing to preconstruction conditions using the thermally treated soil
and new soil if necessary
Status of Implementation
The RD for OUs 1 and 2 actions selected in the 1996 ROD were completed in September 1997, and the
remedies were constructed and operating by October 1998. Following the first year of operation, a joint
inspection was conducted by the EPA and NDEE, and the remedies were determined to be operational
and functional on October 29, 1999. The OU2 remedy was determined to be operational and functional
(O&F) on February 8, 2000, which began the ten-year long term response action (LTRA) period.
OU2
The OU2 GET system consisted of three groundwater extraction wells and a tray air stripper with
chemical cleaning system. The groundwater extraction wells and four of the vapor extraction wells are
in the frontage road adjacent to the former OHM dry cleaning facility, and one vapor extraction well and
the remediation equipment and controls are housed in a pre-engineered building. The GET system has
been inactive since December 2009, when a pilot study for in-situ chemical oxidation (ISCO) treatment
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of groundwater in the source area was initiated. Performance sampling events conducted after the last
ISCO injection in March 2010 through May 2011 indicated that contaminant levels in monitoring well
samples in the source area had decreased from pre-injection levels. However, analytical results from
subsequent sampling events indicated that concentrations of PCE had rebounded to pre-ISCO injection
levels.
The work plan for the in-situ thermal remediation (ISTR) portion of the amended remedy, to address
source area contamination, was completed in 2017. Construction of the ISTR system was initiated in the
spring of 2018 and completed heating in December 2018. More details of the ISTR remedial action
effort are located in Appendix D, Remedial Action Completion Report.
OU3
The RD for OU 3 was completed in June 1997. The RA included the installation of two downgradient
monitoring wells at each OU and six quarterly monitoring events. The final RA Report for OUs 3 and 4
was approved on July 14, 1999. The remedies for OU4 were turned over to the state for O&M on
September 10, 1999.
Institutional Controls Summary
ICs implemented at the Site are summarized in Table 2-4. Ordinance No. 8363 contains a provision that
it shall remain in effect for an initial term of 25 years, with an option of extending it if groundwater
contamination persists beyond that timeframe. Presently, the EPA and NDEE area coordinating with the
city of Grand Island to potentially reduce the groundwater control area and extend the ordinance.
TABLE 2-4: Summary of Implemented I<
2s
Modi si
ICs
Needed
ICs Called for
in (lie Decision
Doc ii in en ts '"
Impacted
I'arceKs)
IC
Objeclne
Title of IC
Instrument
Implemented and
Date (or planned)
Groundwater
Yes
Yes
Area-Wide
Restricted
groundwater use for
human consumption,
New well registration
and permitting
requirements
City Ordnance No.
8363 established
Groundwater Control
Area No. 1 February
1998
1 ICs were included as remedy components in the 1996 ROD (OUs 1-4) and the 2001 ROD (OU5)
Systems Operations/Operation & Maintenance
OU2
The SVE system and GET system were abandoned and removed as part of the ISTR effort in 2018.
Quarterly water sampling and vapor intrusion sampling was conducted for a period of 2 years for a total
of 8 sampling events after completion of the ISTR effort to determine the effectiveness of the remedial
action. Data review and analysis of these reports is discussed the data review section.
OU3
Over the FYR period, two monitoring wells at OU3 were sampled in the fall of 2021 by the NDEE.
MW-1A (near the loading dock) reported a PCE concentration of 6.78 [j,g/L and MW-1C (by the
entrance from N. Eddy Street) reported a PCE concentration of 2.86 (J,g/L. The concentrations at both
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wells were reported lower than all previous years.
OU5
The RD for the OU5 AS/SVE systems was completed in January 2004, and construction was completed
by August 2004. The RD and RA were performed pursuant to a consent decree entered on September
20, 2002, between the EPA and UPRR. An RA report was signed in September 2004 marking the start
of O&M for OU5.
Since OU5 was the final remedy for the Site, a preliminary close-out report was prepared following
completion of construction activities for the OU5 remedy. Construction Completion for the Site
occurred on September 14, 2004.
The AS/SVE system initially ran continuously and then in pulsed operation. In 2010, the system had
reached asymptotic influent vapor concentrations and was determined to be ineffective at remediating
shallow (0-4 ft bgs) silty vadose zone soils. The AS/SVE system was dismantled and abandoned in
September 2010.
Pursuant to the 2009 ROD Amendment, in November and December 2010, approximately 1,564 tons of
west parcel shallow contaminated soils were excavated, treated on the site via low-temperature thermal
desorption, and backfilled after verification that treated soils met site closure criteria. These excavated
soils were the 0-4 ft bgs silty soils which had been ineffectively treated by the SVE system. Light non-
aqueous phase liquid (LNAPL) bailing activities were also abandoned during this action due to the
absence of measurable LNAPL in several consecutive monitoring events.
An ISCO treatment pilot study (modified Fenton's reagent) of the west parcel area occurred during
December 2010 and October 2011. The injections were performed in accordance with the October 2010
Chemical Injection Work Plan. Potassium permanganate injections were performed as a polishing step
in the same area in November through December 2011.
A soil sampling and soil gas investigation below the concrete floor of the City Electric Department
building was completed in September 2012. Based on the detected concentrations above the TCE and
PCE screening levels in the soil gas samples, evaluation of indoor air was recommended. In May and
June 2013, a VI investigation was conducted at the City Electric Department Building and the adjacent
Mid Plains Construction Building. Vapor intrusion mitigation system (VIMS) diagnostic testing was
conducted at these buildings in 2014. Installation of VIMS at both buildings was completed in January
2016. Quarterly monitoring of VIMS operation was initiated in May 2016 and has continued to the
present. In addition to the investigations at the City Electric and Mid Plains construction buildings,
investigations were conducted to evaluate the potential for VI at nearby residential properties. No VI-
related contaminants of potential concern were identified and no further actions at the residential
properties were recommended.
A Supplemental Remedial Evaluation Work Plan was submitted in February 2021 which recommended
installing five additional monitoring wells. Both the EPA and NDEE reviewed the work plan and
concurred with the recommendations.
Five additional monitoring wells (MWN-15 through MWN-19) were installed in June 2021. As of 2017,
quarterly groundwater monitoring events from 12 monitoring wells continue at OU5. Quarterly VIMS
12
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monitoring, initiated in 2016, continue at the City Electric Department building and the adjacent Mid
Plains Construction building. Maintenance of the VIMS is performed by UPRR's contractor.
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 3-1: Protectiveness Determinations/Statements from the 2018 FYR
or #
Protectiveness
Delerin illation
Protectiveness Statement
OU2
Groundwater at
OHM
Protectiveness
Deferred
A prolecli\ eiiess determination of the remedy at OL2 cannot
be made at this time until further information is obtained.
To make a protectiveness determination, the following
actions need to be completed: Conduct VI monitoring to
determine if VI mitigation is needed. It is expected that these
actions will take approximately 15 months to complete, at
which time a protectiveness determination will be made.
OU3
Soil and
Groundwater at
Liberty
Cleaners
Short-term Protective
The remedy at OU3 currently protects human health and the
environment because land use controls (LUCs) prevent
exposure to contaminated groundwater. However, in order
for the remedy to be protective in the long term, plume
delineation needs to be conducted.
OU4
Soil and
Groundwater at
Ideal Cleaners
Protective
The remedy at OU4 is protective of human health and the
environment. All components of the remedy have been
implemented.
OU5
Soil and
Groundwater at
Former
Nebraska
Solvent
Company
Short-term Protective
The remedy at OU5 currently protects human health and the
environment because LUCs prevent exposure to
contaminated groundwater and implemented VI mitigation
systems address VI risks at the Grand Island City Electric
and the Mid Plains Construction buildings. However, in
order for the remedy to be protective in the long-term, ISCO
treatment or an alternative remedy needs to be implemented
to address groundwater COC concentrations above MCLs.
Sitewide
Deferred
A protectiveness determination of the remedy at OU2
cannot be made at this time until further information is
obtained. Further information will be obtained by taking
the following actions: Conduct VI monitoring to determine
if VI mitigation is necessary. It is expected that these
actions will take approximately 15 months to complete, at
which time a protectiveness determination will be made.
Table 3-2: Status of Recommendations from the 2018 FYR
Current Status
Current Implementation
Completion
OU#
Issue
Recommendations
Status Description
Date (if
applicable)
13
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0U2
Vapor intrusion
risks have not
been adequately
quantified in
areas outside of
the ISTR planned
locations and in
the migrating
downgradient
plume.
Evaluate potential
for VI risk at
properties to the
East / Southeast of
the primary source
of contamination
and the tire shop
immediately west
of the OHM
building.
Completed
The EPA conducted
eight quarterly sampling
events over a 2-year
period. No further action
is necessary
12/31/2021
0U3
Downgradient
plume
delineation
incomplete
Evaluate plume
conditions
including a
downgradient
plume delineation.
PCE in MW1A
was stable during
FYR period but
concentrations
remain above the
MCL. Consider
remedy
effectiveness based
on results.
Completed
NDEE sampling OU3,
results did not warrant
further action
12/31/2021
0U5
Groundwater
monitoring data
indicate that the
source area
concentrations of
TCE, PCE and
cz5-1,2-DCE are
decreasing, but
remain above
MCLs.
Contamination
levels in the
downgradient
side of the plume
have no trend or
are increasing.
Continue either
ISCO treatments
or an alternative
remedy and
continue
monitoring
progress of
treatment
processes towards
permanently
reducing
groundwater COC
concentrations to
levels less than
corresponding
MCLs.
Completed
PRP evaluated remedial
alternatives and elected
to install several new
monitoring wells. Will
sample the new
monitoring wells to have
a more informed
decision in the future.
10/31/2021
0U5
Vapor intrusion
risks have not
been adequately
quantified in
areas
downgradient of
the defined
plume area.
Evaluate potential
for VI risk at
downgradient of
defined plume area
Completed
PRP sampled in Spring
of 2021. No significant
findings
04/05/2021
14
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IV. FIVE-YEAR REVIEW PROCESS
Community Notification, Involvement & Site Interviews
A public notice was made in the Grand Island Independent on 8/28/2022, stating that there was a FYR
and inviting the public to submit any comments to the EPA. The results of the review and the report will
be made available to the public through an internet-based repository at the following website:
https://www.epa.gov/superfund/search-superfund-five-vear-reviews
Site historical information is located at:
https://www.epa.gov/superfund/cleburnstreetwell
During the FYR process, interviews were conducted to document any perceived problems or successes
with the remedies that have been implemented to date. The results of these interviews are summarized in
Section 4.1.2.
Requests for interviews through an interview questionnaire form were submitted to the NDEE, the city
of Grand Island, and UPRR as the PRP for OU5. Scott Summerside, Project Manager with the NDEE,
Mr. Jerry Januelwicz, City Administrator for Grand Island, and Matt Sugar, engineering consultant to
UPRR; all submitted responses. No public interviewees were identified. A copy of the Interview
Records is provided in Appendix C.
Data Review
As previously described in the Site Background section, the data review for this FYR included OUs 2, 3
and 5. There is no data to review for OU1 and OU4 during this reporting period. The data review is
summarized below by OU.
OU2
A remediation system was installed at OlJ 1 and OU2 in 1998 and was comprised of a GET system
and a SVE system. The OlJ-2 GET system consisted of three groundwater extraction wells and a
tray air stripper with a chemical cleaning system. The three groundwater extraction wells and four
of the vapor extraction wells were located in the street adjacent to the former OHM dry cleaning
facility. One vapor extraction well and the remediation equipment and controls were housed in a
pre-engineered building installed during construction. The GETS was in operation until December
2009 when a pilot study for in-situ chemical oxidation (1SCO) treatment of groundwater in the
source area was initiated.
The GET system and SVE remedial action for OlJ-2 was completed February 8, 2010, although
groundwater continued to be monitored with the most recent monitoring event being conducted in
November 2021.
While the existing remedy was effective in containing the groundwater contaminant plume, it did not
address the source area to a substantial degree and was not adequate to meet RAOs within a reasonable
timeframe. To address contamination in the source area, a pilot study was initiated in December 2009 to
conduct ISCO injections using permanganate. Performance sampling events conducted after the last
permanganate injection in March 2010 through May 201 1 indicated that contaminant levels in
15
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monitoring well samples in the source area had decreased from pre-injection levels. However, analytical
results from subsequent sampling events indicated that concentrations of PCE, the primary contaminant
of concern, had rebounded to pre-ISCO injection levels.
The thermal system included the following:
• Electrodes installed in the target treatment zone (TTZ) to heat the target treatment volume
to the required target temperature for vaporization of PCE; Multi-Phase Extraction (MPE)
wells to capture PCE and steam generated from subsurface heating with a network of
extraction wells equipped with downhole compressed-air-assisted vacuum groundwater
recovery tubes.
• Liquid phase air stripping with liquid-phase and vapor-phase treatment with granular
activated carbon using a system designed specifically for use with the high temperatures
and high contaminant recovery rates associated with the Electro-Thermal Dynamic
Stripping Process (ET- DSP™).
• Temperature sensors spaced throughout the formation to monitor attainment of the
desired temperature and ensure that the co-boiling point of the water/contaminant
mixture is achieved and maintained throughout the TTZ.
• Subsurface temperature using real-time internet enabled sensing technology.
Fifty-three electrode boreholes were installed using hollow stem auger (HSA) drilling methods at
a nominal 20-ft spacing, in a triangular configuration, to ensure thorough heating of the target
treatment zone. A total of 39 MPE well boreholes were installed using HS A and were within the
former OHM parcel, the boreholes were eight inches in diameter, with 4-inch diameter stainless
steel extraction wells set to a depth of 45 ft below ground surface (bgs). Twelve temperature
sensor wells were installed using HSA drilling methods and completed with internal Optical
Temperature Acquisition Module temperature sensors. Normal operations ran for a total of 165
days, from June 27 to December 9, 2018, when contaminant mass removal rates had declined
significantly. Results from the soil confirmation sampling, completed in December 2018 showed
all 15 locations were less than the 890 |ig/kg threshold.
The remediation system removed 30.4 pounds of PCE in the liquid and condensable phase, and
0.6 pounds of other contaminants. These masses were calculated based on bi-weekly laboratory
analysis of treatment system samples. Similarly, there were 806.4 pounds of PCE removed in the
vapor phase, and 244.3 pounds of other contaminants. The total mass of contaminants removed
from the Site is 1,081.7 pounds. The PCE removal over time is illustrated below.
The Annual Groundwater Monitoring Reports for OU2 were reviewed between 2018 and 2021.
The 2022 report was not completed at the time of the data review. Groundwater results for OU2
are summarized in the appendices. A Mann-Kendall trend analysis was conducted for shallow,
intermediate, and deep interval monitoring wells using EPA software ProlJCL for monitoring
wells that consistently indicated PCE groundwater detections during the FYR period. A summary
of the trend analyses is indicated in the following table. TCE is present in several monitoring wells
at low concentrations correlating to the highest PCE concentrations. Further degradation
compounds such as 1,2- dichloroethylene and vinyl chloride are either not detected or only
16
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detected at trace concentrations.
Monitoring Well:
Mann-Kendall Trend for PCE (95%
confidence level):
Comments:
Shallow:
MW-8A
No trend
MW-13A
No trend
Ordinary least squares (OLS)
Regression Slope indicates potentially
decreasing
EM-MWO1S
Increasing
EM-MW02S
Increasing
EM-MW03S
No trend
OLS Regression Slope indicates
potentially increasing
EM-MW04S
No trend
Intermediate:
MW-105BB
No trend
MW-107BB
No trend
OLS Regression Slope indicates
potentially increasing
MW-108BB
Decreasing
EM-MWO ID
No trend
OLS Regression Slope indicates
potentially decreasing
EM-MW02D
No trend
OLS Regression Slope indicates
potentially decreasing
EM-MW03D
Increasing
EM-MW04D
Increasing
MW-2019-1B
No trend
OLS Regression Slope indicates
potentially increasing
MW-2019-2B
Decreasing
Deep:
MW-2019-1C
No trend
OLS Regression Slope indicates
potentially increasing
MW-2019-2C
Decreasing
The lack of significant concentrations of degradation products indicates that reductive
dechlorination is not occurring within OU2. Increasing trends identified in several monitoring
wells also indicates that the groundwater plume is not fully contained and may continue to
migrate off of the site without additional remedial actions such as construction of a GET system.
Increasing trends in two intermediate monitoring wells and a potentially increasing trend in a
deep monitoring well indicate vertical migration of PCE from the source area.
17
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PCE Mass Extracted in Liquid and Vapor Streams
2018-06-27 to 2018 1231
JulOt Aug01 SapOl OctOI NovOI DecOl
2018 2018 2018 2018 2018 2018
PCE Mass Recovered in Liquid and Vapor Stream in Previous Period
Cumulative PCE Mass Recovered from the Liquid and Vapor Stream Since Startup
Rounds 5-8 of indoor air and sub-slab vapor sampling were reviewed for OU2. For VI, no
structures indicated indoor air exceedances of the PCE removal management level (RML) of 180
(ig/m3 for non-residential structures or the TCE RML of 6 jxg/m3 during this FYR period. No
results indicated sub-slab soil gas detections above the PCE RML of 5,800 jig/m3 or the TCE
RML of 200 (ig/m3. There are currently no VIMS in OU2. Indoor air sampling results are
included in the appendices.
OU3
The December 2021 OU3 sampling report prepared by EA Engineering for the NDEE was
reviewed. For the two monitoring wells with multiple detections of PCE (MW-1A and MW-1C) a
trend analysis was performed and is summarized below.
Monitoring Well:
PCE
(Hg/L)
2004
PCE
(Mg/L)
2008
PCE
(l-ig/L)
2012
PCE
(Mg/L)
2015
PCE
(Hg/L)
2017
PCE
((¦ig/L)
2021
Mann-Kendall Trend
(95% confidence
level)
MW-1A
14
12.7
49.4
10
16.4
6.78
No trend, slope
slightly decreasing
MW-1C
49
6.4
4.29
6.2
3.0
2.86
Decreasing trend
OU5
The quarterly groundwater and VI reports submitted by the responsible party between the third
quarter 2018 to 2022 were reviewed for this FYR. Mann-Kendall trend analyses at a 95%
confidence level were performed on monitoring wells MW-3B and MW-10A using ProUCL as
most of the monitoring wells are more recently installed and have not had sufficient sampling
events to calculate trend.
18
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Monitoring Well:
PCE Trend:
TCE Trend:
1,2-
Dichlorocthylene
Trend:
Vinyl Chloride Trend:
MW-3B
No trend
No trend
No trend
Insufficient detections to
calculate
MW-1 OA
No trend
No trend
No trend
No trend
The high concentrations of 1,2-dichloroethylene (1,2-DCE) in MW-3B and MW-1 OA and vinyl
chloride in MW-1 OA are indicative that reductive dechlorination is occurring within OU5. A work
plan for supplemental investigation for OU5 was approved by the EPA in 2021 to better
characterize the groundwater plume and the investigation is underway. Additional monitoring
wells are being installed along with direct-push technology (DPT) groundwater samples. The
additional DPT data and groundwater samples from additional monitoring wells will be included
in the data review for the next FYR.
The VIMS quarterly reports between 2018 and 2021 were reviewed and the VIMS continues to operate
satisfactorily according to inspections and pressure recordings. A summary table of the OU5 VIMS
performance data for the City Electric and Mid Plains Construction buildings is included in Appendix B.
Site Inspection
The inspection of the Site was conducted on September 27, 2022. In attendance were David
Wennerstrom, EPA RPM; Randy Brown, EPA Hydro Geologist; Sarah Klescewski, NDEE Supervisor;
Matt Sugar, OU5 environmental consultant. The purpose of the inspection was to assess the
protectiveness of the remedies. The Site Inspection Checklist and photographs taken during the site
inspection are included in Appendix C.
OU2
The site inspection team located the monitoring wells and there were no indications of disturbances in
the road on the northeast side of the site or evidence that any of the wells are not functional. No issues
impacting current and/or future protectiveness were observed.
OU3
The former Liberty Cleaners property is now a maintenance/tire facility (Miller Tire Pros). All four
monitoring wells MW-1 A, MW-1B, MW-1C, and MW-1D were located and appeared serviceable. No
issues impacting current and/or future protectiveness were observed.
OU5
The site inspection included walking the perimeters of the Grand Island City Electric Department and
the Mid Plains Construction buildings and observing the installed VIMS. VIMS were operating and
system components were in good condition. No issues impacting current and/or future protectiveness
were observed.
V. TECHNICAL ASSESSMENT
QUESTION A: Is the remedy functioning as intended by the decision documents?
Question A Summary
As summarized in the Data Review section, the thermal treatment was effective in reducing contaminant
19
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mass in the 0U2 source area. The increasing trends for PCE in shallow monitoring wells EM-M01S and
EM-MW-02S and intermediate monitoring wells EM-MW03D and MW04D are indicative that the PCE
groundwater plume is not stable, and therefore groundwater RAOs will not be met in a reasonable
remedial timeframe. While the remedy is protective in the short term since perimeter monitoring wells
have not indicated increasing PCE trends, additional groundwater remedial actions will be necessary to
restore the aquifer to RAOs within a reasonable remedial timeframe. The increasing PCE trends in
intermediate monitoring wells EM-MW03D and EM-MW04D are indicative that vertical as well as
horizontal migration of PCE in groundwater is continuing to occur within OU2. The potential for
continued downgradient horizontal and vertical migration of PCE contaminated groundwater from OU2
will continue until additional remedial actions are taken for OU2 groundwater. Therefore, the
groundwater remedy for OU2 does not appear to be fully functioning as intended by the design.
OU2 Remedial Action Performance
The soil remedy appears to be complete based on the thermal treatment results, which will significantly
reduce contaminant mass loading to groundwater. There is currently no active GET system or other
groundwater remedy in place for OU2 other than regular groundwater monitoring. The increasing trend
of PCE in several monitoring wells is indicative that the groundwater plume is not yet stable and
additional groundwater remedial actions are appropriate to restore the OU2 groundwater to RAOs in a
reasonable timeframe and to address continued migration of contaminated groundwater. A Remedial
Conceptual Design for Path Forward report was completed by an EPA contractor in 2022 with several
recommendations to enhance the OU2 groundwater remedy. These will be reviewed by the EPA, and
additional remedial actions will be taken for OU2 groundwater during the next FYR period.
OU2 System Operations/O&M
Other than regular groundwater monitoring, there is no current O&M occurring within OU2. During the
FYR site inspection, all monitoring wells were located and appeared to be in good condition with well
protective covers intact.
OU2 Implementation of Institutional Controls and Other Measures
A site-wide ordinance for all OUs was enacted by the city of Grand Island in 1998. City Ordinance 8363
prohibits any installation of groundwater wells other than monitoring wells. This ordinance sunsets in
2023, and the EPA, the NDEE, and the city of Grand Island will be negotiating ICs during the next FYR
period. The city of Grand Island has the option of extending the ordinance. Site-wide ICs are in place.
Presently, the EPA and NDEE are in discussions with the city of Grand Island to reduce the footprint of
the groundwater control use area and extending the ordinance.
OU3 Remedial Action Performance
The remedy for OU3 is performing as intended by the design.
Monitoring well MW-1C indicates a decreasing Mann-Kendall trend (MW-1C) at a 95% confidence
level. Monitoring well MW-1A indicates no Mann-Kendall trend at a 95% confidence level but a
decreasing slope of the ordinary least squares (OLC) regression line indicates that the trend may
decrease in the future.
OU3 System Operations/O&M
The NDEE is responsible for O&M of the groundwater monitoring network. The only O&M consists of
sampling of monitoring wells. During the FYR site inspection, all monitoring wells were located and
appeared to be in good condition.
20
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0U3 Implementation of Institutional Controls and Other Measures
A site-wide ordinance for all OUs was enacted by the city of Grand Island in 1998. City Ordinance 8363
prohibits any installation of groundwater wells other than monitoring wells. This ordinance sunsets in
2023, and the EPA, the NDEE and the city of Grand Island will be negotiating ICs during the next FYR
period. The city of Grand Island has the option of extending the ordinance. Site-wide ICs are in place.
Is the OU5 Remedy functioning as intended by the decision documents?
The remedy for OU5 is functioning as intended by the design. The VIMS consists of two sub-slab
depressurization systems (SSDs), one at the City Electric building at 1219 W. North Front Street and the
Mid Plains Construction building at 1325 W. North Front Street. Each SSD consists of multiple sub-
systems. Each sub-system contains its own exhaust fan to maintain negative pressure (vacuum) within
its area of influence. A control panel in each building contains pressure gauges and controls for each
sub-system. A single monitoring panel located inside each building contains analog pressure gauges to
monitor the real-time operating pressure in each sub-system header and each of the extraction points.
Pressure monitoring ports are located through the floor slab throughout each building and are used to
measure differential pressure. Each VIMS was designed to create a minimum negative sub-slab/room
differential pressure of -0.025 to -0.035 inches of water column. The City Electric building has 14 sub-
systems (1- 14), and the Mid Plains Construction building has nine sub-systems (15-23).
OU5 Remedial Action Performance
The OU5 groundwater remedy currently consists of a monitoring well network. Additional groundwater
investigation is on-going, and the groundwater monitoring network will be enhanced during the next
FYR period.
The performance of the VIMS is evaluated quarterly by the PRP contractor and reported to the EPA. No
significant performance issues were reported during the FYR period outside of occasional shutdowns of
individual sub-systems due to routine maintenance and repairs. During the FYR site inspection, the
VIMS and all sub-systems were operating according to the design specifications and decision
documents. The semi-annual exhaust sampling also indicates the VIMS is performing as designed to
remove contaminant mass.
Groundwater monitoring is occurring according to the schedule approved by the EPA. As previously
mentioned, there are newer monitoring wells and DPT data that will be evaluated during the next FYR
periods.
OU5 System Operations/O&M
The VIMS is inspected quarterly by the PRP contractor and quarterly reports are submitted to the EPA.
The inspections consist of visual evaluations of the buildings to determine if conditions change such as
ventilation, building configuration, etc. and evaluation of the components of the VIMS. Each sub-system
has its own alarm if the sub-system shuts down for some operational reason. During the FYR site
inspection, all sub-systems were operational, and all pressure levels were within the acceptable
operational limits. Exhaust samples are collected semi-annually (every other quarterly inspection) to
verify mass removal.
The quarterly reports during this FYR period indicated the following maintenance activities to the
VIMS:
21
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2018: Repairs to tubing on subsystems 2 and 3; and replacement of two sub-slab pressure probes.
2019: Replacement of vacuum tubing (and associated conduit) at the City Electric Building for Sub-
Systems 1, 2, 3, and 4, to address errors in vacuum readings; replacement of the fan at Sub-System 1
(City Electric building); sealing of potential migration pathways (cracks) identified in the building slab
at the Mid Plains Construction building; and replacement of the fan at Sub-System 5 (City Electric
building).
2020: A sub-slab pressure monitoring port at the Mid Plains Construction building (MP-MP-02) was
damaged by a forklift and subsequently repaired.
2021: Conduit replaced for Sub-Systems 1-4 in the City Electric building. Sub-System 19 temporarily
stopped due to activity inside the Mid Plains Construction building cutting one of the vapor conduits and
was repaired.
2022: No current significant maintenance activities outside of quarterly inspections (only one quarter
reported) at the time of this FYR.
For groundwater, quarterly monitoring performed by the PRP contractor is currently ongoing, and no
significant interruptions have occurred during the FYR period. During the FYR inspection, all
monitoring wells were located and appear to be in good condition. The monitoring well network will be
enhanced during the next FYR period pending the results of the on-going additional investigation
activities.
OU5 Implementation of Institutional Controls and Other Measures
The Site-wide Ordinance 8363 is also in force for OU5. This ordinance sunsets in 2023, and the EPA,
the NDEE and the city of Grand Island will be negotiating ICs during the next FYR period. The city of
Grand Island has the option of extending the ordinance. Site-wide ICs are in place.
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels, and RAOs used at the time
of the remedy selection still valid?
From a human health perspective, there have been no additional changes in exposure assumptions or risk
assessment methodologies since the last FYR report that would affect the protectiveness of the remedy.
Cleanup levels for the Site are predominantly based on the EPA's MCLs. Therefore, changes in toxicity
values since the time of remedy selection do not impact remedy protectiveness. Using MCLs as cleanup
levels remains valid. Soil cleanup levels for the protection of groundwater for 1,1—dichloroethylene and
methylene chloride were back-calculated using risk-based values, even though MCLs were available at
that time. Thus, these two soil cleanup levels may no longer be protective. More importantly, 1,1-
dichloroethylene and methylene chloride were not retained as groundwater COCs at OU5 even though the
1999 human health risk assessment noted that the concentrations of both compounds exceeded their
respective MCL.
Ecological risk at the Site is limited as there are no significant groundwater interactions with surface water
features and the industrial land use at the site does not provide significant habitat or resources for
ecological receptors. The remedy at the Site is currently protective of ecological risk.
22
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Changes in Standards and TBCs
The 0U2, 0U3, and 0U5 soil and groundwater cleanup levels established in the 2001 ROD, the 2009
ROD Amendment, and the 2012 ROD Amendment are based on ARARs or risk-based concentrations
(RBCs) and are presented in the table below.
Operable Unit and
Media
Contaminant of Concern
Cleanup
Level
Units
Basis
Current Status
OU2 & OU3
Groundwater
tetrachl oroethy 1 ene
5
Hg/L
MCL
no change in MCL
tri chl oroethy 1 ene
5
Hg/L
MCL
no change in
MCL
carbon tetrachloride
5
Hg/L
MCL
no change in
MCL
chloroform
80
Hg/L
MCL
no change in
MCL
OU3 soil
tetrachl oroethy 1 ene
0.89
mg/kg
SSL-MCL
no change in MCL
tri chl oroethy 1 ene
0.053
mg/kg
SSL-MCL
no change in
MCL
OU5
groundwater
tetrachl oroethy 1 ene
5
Hg/L
MCL
no change in MCL
tri chl oroethy 1 ene
5
Hg/L
MCL
no change in
MCL
cis-1,2-dichl oroethy 1 ene
70
Hg/L
MCL
no change in
MCL
xylenes
10,000
Hg/L
MCL
no change in
MCL
toluene
1,000
Hg/L
MCL
no change in
MCL
ethylbenzene
700
Hg/L
MCL
no change in
MCL
benzene
5
Hg/L
MCL
no change in
MCL
LNAPL hydrocarbon
no
observable
sheen
n/a
qualitative
no change
OU5 soil
1,1,1 -trichloroethane
28.1
mg/kg
SSL-MCL
no change in MCL
1,1 -dichloroethylene
0.0006
mg/kg
SSL-RBC
RBC was 14 (J,g/L;
MCL is 7 ng/L
1,2,4-trimethylbenzene
11.1
mg/kg
SSL-RBC
RBC was 8 (J,g/L;
RSL is 56 [j,g/L
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1,3,5-trimethylbenzene
6.9
mg/kg
SSL-RBC
RBC was 8 (J,g/L;
RSL is 60 [j,g/L
benzene
0.2
mg/kg
SSL-MCL
no change in MCL
cis-1,2-dichl oroethy 1 ene
3.2
mg/kg
SSL-MCL
no change in MCL
ethylbenzene
43.2
mg/kg
SSL-MCL
no change in MCL
methylene chloride
0.37
mg/kg
SSL-RBC
RBC was 1,210
MCL is 5
^tg/L
tetrachl oroethy 1 ene
0.656
mg/kg
SSL-MCL
no change in MCL
toluene
75.5
mg/kg
SSL-MCL
no change in MCL
trans-1,2- dichloroethylene
3.6
mg/kg
SSL-MCL
no change in MCL
tri chl oroethy 1 ene
0.17
mg/kg
SSL-MCL
no change in MCL
vinyl chloride
0.12
mg/kg
SSL-MCL
no change in MCL
Notes:
MCL - Maximum Contaminant Level RBC - Risk-Based Concentration RSL - EPA Regional Screening Level
SSL-MCL - Soil Screening Level protective of leaching to groundwater, based on an MCL SSL-RBC - Soil Screening Level
protective of leaching to groundwater, based on an RBC
The groundwater cleanup levels are all based on MCLs, which are considered ARARs, and none of
these values have changed since the time of remedy selection.
Each soil cleanup level was back-calculated, using site-specific input parameters, as the concentration
that could remain in soil and not significantly contribute to groundwater contamination via leaching.
Most of the soil cleanup levels were back-calculated from MCLs, none of which have changed since the
time of remedy selection. However, four soil cleanup levels were back-calculated from risk-based
concentrations, and these targets have changed. The soil cleanup levels for 1,2,4-trimethylbenzene and
1,3,5-trimethylbenzene were both based on an action level for a future residential child of 8 (J,g/L. MCLs
have not been promulgated for the trimethylbenzenes. However, the November 2022 residential
tapwater Regional Screening Levels (RSLs), based on a non-cancer hazard index of 1, are 56 |ig/L for
1,2,4- trimethylbenzene and 60 [j,g/L for 1,3,5-trimethylbenzene. Since these groundwater targets are
higher than the action levels used to derive the trimethylbenzene soil cleanup levels at the time of
remedy selection, the soil cleanup levels for 1,2,4-trimethylbenzene and 1,3,5-trimethylbenzene remain
valid.
In contrast, the soil cleanup levels for 1,1-dichloroethylene and methylene chloride were also based on
an action level for a future residential child, at 14 [j,g/L and 1,210 (J,g/L, respectively, even though MCLs
were in place at the time of remedy selection, at 7 [j,g/L and 5 (J,g/L, respectively. Since the groundwater
targets that would be used today (i.e., the MCLs) are much lower than the action levels, this calls into
question the protectiveness of the 1,1—dichloroethylene and methylene chloride soil cleanup levels that
24
-------
were established at the time of remedy selection. However, these soil cleanup levels are intended to
minimize further groundwater contamination, so when evaluating remedy protectiveness to human
health, it is more important to ensure that the groundwater cleanup levels themselves remain protective.
It appears that neither 1,1-dichloroethylene nor methylene chloride were retained as groundwater COCs
at OU5 even though table 2-7 of the 1999 Risk Assessment Report indicates that the maximum detected
concentrations of both compounds at that time (380 [j,g/L 1,1-dichloroethylene and 16 [j,g/L methylene
chloride) exceeded their respective MCLs.
Changes in Toxicity and Other Contaminant Characteristics
Although there have been many changes in the toxicity values for the OU2, OU3, and OU5 soil and
groundwater COCs since the time of remedy selection, all of the groundwater cleanup levels and most of
the soil cleanup levels were based on the MCLs, which have not changed since the time of remedy
selection. Only two soil COCs currently lack MCLs: 1,2,4-trimethylbenzene and 1,3,5-
trimethylbenzene. The oral reference dose for each of these compounds has decreased from 0.05 mg/kg-
day to 0.01 mg/kg-day, and the inhalation reference concentration has increased from 6.0 x 10"3 mg/m3
to 6.0 x 10"2 mg/m3. However, the November 2022 tapwater RSLs for both trimethylbenzenes, which
incorporate current toxicity values, are higher than the action level targets used to derive the soil cleanup
levels. Thus, changes in toxicity values have not impacted remedy protectiveness at the Site.
Changes in Risk Assessment Methods
There have been no changes in risk assessment methodologies since the last FYR report that would
affect the protectiveness of the remedy.
Changes in Exposure Pathways
There have been no changes in exposure pathways since the last FYR report that would affect the
protectiveness of the remedy.
Question C: Has any other information come to light that could call into question the protectiveness of
the remedy?
No other information has come to light, including climate change, that calls into question the
protectiveness of the remedy. Climate change may result in some periods of drought or flooding that
may affect shallow groundwater levels but will not substantially affect the remedy.
25
-------
VI. ISSUES/RECOMMENDATIONS
Issues/Recommendations
OU(s) without Issues/Recommendations Identified in the Five-Year Review:
03, 05
Issues and Recommendations Identified in the Five-Year Review:
OU2
Issue Category: Remedy Performance
Issue: Groundwater monitoring indicates that the concentrations of TCE
and PCE are unstable and remain above MCLs.
Recommendation: Continue annual groundwater monitoring and discuss
potential for additional remedial actions to include enhanced bio pilot
studies to meet RAOs in a reasonable timeframe.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight
Party
Milestone Date
No
Yes
EPA
EPA
3/30/2025
OTHER FINDINGS
In addition, the following recommendations were identified during the FYR that may improve
performance of the remedy, but do not affect current and/or future protectiveness:
It is recommended that the NDEE continue to sample the OU3 wells during the next FYR period to
assess remedy attainment consistent with EPA guidance. 1,1-Dichloroethylene and methylene chloride
were identified as COCs for OU5 soil, but not OU5 groundwater, even though concentrations reported at
the time of remedy selection exceeded MCLs. Groundwater sampling for OU5 should evaluate 1,1-
dichloroethylene and methylene chloride. If current concentrations exceed MCLs, these compounds
should be added to the list of routine analytes for groundwater monitoring, and they may need to be
added as OU5 groundwater COCs in an appropriate decision document.
26
-------
VII. PROTECTIVENESS STATEMENT
Protectiveness Statement(s)
Operable Unit:
OU2 (Groundwater at
One-Hour Martinizing)
Protectiveness Determination:
Protective
Planned Addendum
Completion Date: NA
Protectiveness Statement:
The remedy at OU2 currently protects human health and the environment because land use
controls (LUCs) prevent exposure to contaminated groundwater.
Operable Unit:
OU3 (Soil and
Groundwater at Liberty
Cleaners
Protectiveness Determination:
Protective
Planned
Addendum
Completion Date:
NA
Protectiveness Statement:
The remedy at OU3 currently protects human health and the environment because land use
controls (LUCs) prevent exposure to contaminated groundwater.
Operable Unit:
OU5 (Soil and
Groundwater at the
Former Nebraska
Solvent Company
Protectiveness Determination:
Protective
Planned Addendum
Completion Date:
NA
Protectiveness Statement:
The remedy at OU5 currently protects human health and the environment. The groundwater
remedy currently consists of a monitoring well network. Additional groundwater investigation is
on-going, and the groundwater monitoring network has been enhanced. Land use controls
(LUCs) prevent exposure to contaminated groundwater and implemented VI mitigation systems
address VI risks at the Grand Island City Electric and the Mid Plains Construction Buildings.
Sitewide Protectiveness Statement
Protectiveness
Determination:
Protective
Planned Addendum
Completion Date:
Protectiveness Statement:
The remedy of the Site currently protects human health and the environment
VIII. NEXT REVIEW
The next FYR report for the Site is required five years from the completion date of this review.
27
-------
APPENDIX A - REFERENCE LIST
-------
Auxilio Management Services, 2021. Final 2019-2020 Annual Monitoring Report. Confirmatory
Sampling. Cleburn Stret Well Superfund Site Operable Unit 2. Grand Island Nebraska. January.
Ayuda, 2019. Remedial Action Completion Report, In-Situ Thermal Remediation, Cleburn Street Well
Superfund Site Operable Unit 2, Grand Island, NE. August.
CH2M Hill, 2018-2019. VIMS Operations Maintenance and Monitoring Report, Quarterly Reports.
Cleburn Street Well Superfund Site (OU5) Grand Island.
EA Engineering, Science, and Technology, 2021. Final Report: Cleburn Street Well Superfund Site,
Groundwater Sampling at Operable Unit No. 3, Grand Island, Hall County, Nebraska. December.
Jacobs, 2019. MWN-3B Area, Groundwater Investigation Summary Report. Cleburn Street Well Superfund
Site (OU5) Grand Island.
Jacobs, 2019-2022. VIMS Operations Maintenance and Monitoring Report, Quarterly Reports. Cleburn
Street Well Superfund Site (OU5) Grand Island.
Jacobs, 2019-2022. Ground Water Monitoring Report, Quarterly Reports. Cleburn Street Well Superfund
Site (OU5) Grand Island.
Jacobs. 2022. Grand Island, NE - Solvent Site, 2023 Five-Year Review, Initial Data Delivery.
Powerpoint. September.
United States Environmental Protection Agency, undated. Remedy Rescue at the Cleburn Street Well Site.
United States Environmental Protection Agency, 1996. Record of Decision, Cleburn Street Well Site,
Grand Island, Nebraska. April.
United States Environmental Protection Agency, 2001. Record of Decision, Cleburn Street Well Site
Operable Unit #5, Hall County, Grand Island, Nebraska. August
United States Environmental Protection Agency, 2003. Soil Remediation Levels for the Cleburn Street
Well Site, Grand Island, Nebraska. December.
United States Environmental Protection Agency, 2008. Second Five Year Review Report, Cleburn Street
Well Site, Grand Island, Nebraska. August.
United States Environmental Protection Agency, 2009. Record of Decision Amendment, Former
Nebraska Solvent Company, Shallow Soil Remediation, Operable Unit 5, Cleburn Street Well
Site, Grand Island, Nebraska. March.
United States Environmental Protection Agency, 201 la. Final Focused Remedial Investigation Report,
Operable Unit 2, Cleburn Street Well Site, Grand Island, Nebraska. April.
United States Environmental Protection Agency, 201 lb. Final Focused Feasibility Study, Operable Unit
2, Cleburn Street Well Site, Grand Island, Nebraska. December.
United States Environmental Protection Agency, 2012a. Superfund Vapor Intrusion FAQs. February.
-------
United States Environmental Protection Agency, 2012b. Amendment to the Record of Decision, Cleburn
Street Well Superfund Site, Operable Units 1 though 4, Grand Island, Nebraska. September.
United States Environmental Protection Agency, 2015 Addendum to Cleburn Street Well Site, City of
Grand Island, Nebraska, Thirdfive-Year Review Report, Operable Unit 5. October.
United States Environmental Protection Agency Region VII, 2016. EPA Region 7 Action Levels for
Trichloroethylene in air. November.
United States Environmental Protection Agency, 2018a. EPA Integrated Risk Information system. April.
Retrieved from: https://www.epa.gov/iris
United States Environmental Protection Agency, 2018. Fourth Five-Year Review Report for Cleburn Street
Well Superfund Site, Grand Island, Nebraska. EPA Region 7. Lenexa, Kansas. August.
United States Environmental Protection Agency, 2018b. EPA Regional Screening Levels. May.
Retrieved from: https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables
-------
APPENDIX B - SITE LOCATION MAP
-------
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AshleyAshley Pari
Cottage «
Fprresjt _i
College
Westside
ngston
Pine Street Well
Hancock^
Grand Island!
Faidley
Cleburn Street
Lincoln Street Well
Ryder Park
A __
did Potash
i Old Fair . i V
Phoenix 40
D^lav|/are
Delaware § §
xnr -c i
Sunset "O"
Buechler Park
Filename: X:/EPA009/Cleburn/040611 Updates/
Focused_Remedial_Investigation/Site_Loc_Map. mxd
Project: EP9019.11.42.03
Revised: 04/06/11 RL
Source: ESR1 StreetMap North America
Legend
Municipal Well
Operable Unit
Figure 1-1
Site Location Map
Cleburn Street Well Site
Hall County
U.S. EPA Region 7
-------
APPENDIX C - SITE INSPECTION
-------
INTERVIEW QUESTIONNAIRE
Site Name: Cleburn Street Well Superfund Site
EPA ID No.: NED981499312
Subject: Five-Year Review
Time:
Date:
Type: Telephone
Location of Visit:
Visit
X Other
Incoming
Outgoing
Contact Made By
Name: David Wennerstrom
Title: Project Manager, Superfund Organization: US. EPA
Individual Contacted - Prepared by
Name: Jerom E. Janulewicz
Title: City Administrator Organization: City of Grand Island
Telephone No.: 308-385-5390
E-mail Address: jerryj@grand-island.com
Street Address: 100 East First Street
City, State, Zip Code: Grand Island, NE 68801
Interview Questionnaire
1. What is your overall impression of the project?
From the information available on the EPA web site and discussion with EPA and NDEE representatives on
September 27, 2022, it appears the project has successfully reduced contaminants from groundwater and soils
within the project area.
2. Are you aware of any community concerns regarding the Site or its operation and administration?
No, I am not aware of any community concerns regarding the Site or its operation and administration at the
present time.
3. Are you aware of any events, incidents, or activities at the Site such as vandalism, trespassing, or emergency
response from local authorities?
The City's emergency dispatch and law enforcement agencies have no records of vandalism, trespassing, or
emergency response required at the site by local authorities.
4. Do you feel well informed about the Site's activities and progress?
At the current time, I believe the city is adequately informed about the Site's activities and progress.
5. Do you have any other comments, suggestions, or recommendations regarding this Site?
I would like follow-up discussions relative to possible reduction of the institutional control area. Has remedial
activities been sufficient to safely operate the city's municipal wells at Pine, Cleburn, and/or Lincoln Street?
-------
INTERVIEW QUESTIONNAIRE
Site Name: Cleburn Street Well Superfund Site
EPA ID No.: NED981499312
Subject: Five-Year Review
Time: 10:00
Date: 11/17/22
Type: Telephone
Location of Visit: N / A
Visit
X Other
Incoming
Outgoing
Contact Made By
Name: David Wennerstrom
Title: Project Manager, Superfund Organization: US. EPA
Individual Contacted - Prepared by
Name: Scott Summerside
Title: Environmental
Specialist II
Organization: NDEE
Telephone No.: 402-471-4247
E-mail Address: scott.summerside@nebraska.gov
Street Address: 245 Fallbrook Blvd.-Suite#100
City, State, Zip Code: Lincoln, NE 68521
Interview Questionnaire
1. What is your overall impression of the project? OU1 and OU4 have been delisted. Progress has been made
toward RAOs at OU2, OU3, and OU5 since the last 5-year review. As documented in the NDEE letter to EPA dated
June 1, 2022, EPA has more work (e.g., pilot study) to do at OU2 before the site can be transferred to State of
Nebraska Operation and Maintenance.
2. Are you aware of any community concerns regarding the Site or its operation and administration? No. My
impression is that the EPA has had good working relationship with the City of Grand Island and property owners.
3. Are you aware of any events, incidents, or activities at the Site such as vandalism, trespassing, or emergency
response from local authorities? No.
4. Do you feel well informed about the Site's activities and progress? Yes, the EPA RPM is good at communicating
about the Site.
5. Do you have any other comments, suggestions, or recommendations regarding this Site? The NDEE letter to
EPA dated June 1, 2022 states our concerns and recommendations for a path forward at OU2. NDEE recommends
no changes to OU3 monitoring activity. NDEE has no comments or concerns about OU5 at this time.
-------
Five-Year Review Site Inspection Checklist
I. SITE INFORMATION
Site name:
Cleburn Street Well Site
Date of inspection:
September 27, 2022
Location and Region: Grand Island, NE, Region 7
EPA ID: NED981499312
Agency, office, or company leading the five-year
review: U.S. EPA Region 7
Weather/temperature: Partly Cloudy, 80s
Remedy Includes: (Check all that apply)
Landfill cover/containment X Monitored natural attenuation
Access controls Groundwater containment
X Institutional controls Vertical barrier walls
Groundwater pump and treatment
Surface water collection and treatment
X Other In-situ thermal treatment (not yet implemented for OU2), vapor intrusion mitigation (VIMS) f
for OU5
Attachments: X Inspection team roster attached
F Site map attached
H. INTERVIEWS (Check all that apply)
No Interviews conducted during Site Inspection
1. O&M site manager
Name Title Date
Interviewed F at site F at office F b\ ohonc Phone no.
Problems, suggestions; F
2. O&M staff Name
Interviewed at site at office by phone Phone no.
Problems, suggestions; F
Title Date
-------
Local regulatory authorities and response agencies (i.e., State and Tribal offices, emergency response
office, police department, office of public health or environmental health, zoning office, recorder of
deeds, or other city and county offices, etc.) Fill in all that apply.
Agency
Contact
Name Title Date Phone no.
Problems; suggestions; F Report attached
Agency
Contact
Name Title Date Phone no.
Problems; suggestions; F Report attached
Agency
Contact
Name Title Date Phone no.
Problems; suggestions; F Report attached
Agency
Contact
Name Title Date Phone no.
Problems; suggestions; F Report attached
4. Other interviews (optional)
-------
III. ON-SITE DOCUMENTS & RECORDS VERIFIED (Check all that apply)
O&M Documents
X O&M manual
As-built drawings
Maintenance logs
Remarks
X Readily available r Up to date r N/A
F Readily available F Up to date F N/A
T Readily available F Up to date F N/A
Site-Specific Health and Safety Plan X Readily available X Up to date F N/A
F Contingency plan/emergency response plan F Readily available F Up to date F N/A
Remarks
O&M and OSHA Training Records
Remarks
T Readily available
T Up to date X N/A
Permits and Service Agreements
F Air discharge permit
F Effluent discharge
F Waste disposal, POTW
F Other permits
Remarks
F Readily available
F Readily available
F Readily available
F Readily available
F Up to date
F Up to date
T Up to date
F Up to date
X N/A
X N/A
X N/A
X N/A
Gas Generation Records
Remarks
F Readily available F Up to date X N/A
Settlement Monument Records
Remarks
F Readily available
T Up to date X N/A
Groundwater Monitoring Records X Readily available
Remarks Maintained at the EPA Region 7 office.
T Up to date I ' N/A
Leachate Extraction Records
Remarks
F Readily available
F Up to date X N/A
9. Discharge Compliance Records
T Air
T Water (effluent)
Remarks
T Readily available
T Readily available
F Up to date X N/A
F Up to date X N/A
10. Daily Access/Security Logs
Remarks
F Readily available
F Up to date XN/A
-------
IV. O&M COSTS
O&M Organization
F State in-house F Contractor for State
T PRP in-house X Contractor for PRP (Jacobs for UPRR at OU5)
T Federal Facility in-house X Contractor for Federal Facility
Other
2. O&M Cost Records
F Readily available F Up to date
T Funding mechanism/agreement in place
Original O&M cost estimate FBreakdown attached
O&M costs are not reported in the FYR.
3. Unanticipated or Unusually High O&M Costs During Review Period
Describe costs and reasons:
V. ACCESS AND INSTITUTIONAL CONTROLS X Applicable i N/A
A. Fencing
1. Fencing damaged F Location shown on site map Gates secured XN/A
Remarks
B. Other Access Restrictions
1. Signs and other security measures F Location shown on site map XN/A
Remarks
C. Institutional Controls (ICs)
1. Implementation and enforcement
Site conditions imply ICs not properly implemented
Site conditions imply ICs not being fully enforced
F Yes
F Yes
No
No
XN/A
XN/A
Type of monitoring (e.g., self-reporting, drive by)
Groundwater use ordnance enforcement by the City of Grand Island
Reporting is up-to-date
Reports are verified by the lead agency
F Yes
T Yes
F No
T No
XN/A
XN/A
Specific requirements in deed or decision documents have been met
Violations have been reported
X Yes
T Yes
F No
T No
N/A
XN/A
Other problems or suggestions: F Report attached
2. Adequacy X ICs are adequate ICs are inadequate F N/A
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D.
General
1.
Vandalism/trespassing F Location shown on site map X No vandalism evident
Remarks
2.
Land use changes on site N/A
Remarks: OU 3 (Former Liberty Cleaners) is now a tire repair/replacement garage. The west end
building at OU5 is leased by Mid-Plains Construction.
3.
Land use changes off site x N/A
Remarks
VL GENERAL SITE CONDITIONS
A.
Roads F Applicable xN/A
1.
Roads damaged F Location shown on site map F Roads adequateF N/A
Remarks
B.
Other Site Conditions
Remarks
VH. LANDFILL COVERS Applicable XN/A
A.
Landfill Surface
1.
Settlement (Low spots) F Location shown on site map
Areal extent Dcoth
Remarks
F Settlement not evident
2.
Cracks F Location shown on site map
Leneths Widths Dcoths
F Cracking not evident
Remarks
3.
Erosion F Location shown on site map
Areal extent Dcoth
Remarks
Erosion not evident
4.
Holes F Location shown on site map
Areal extent Depth
Remarks
T Holes not evident
5.
Vegetative Cover T Grass T Cover properly established F No signs of stress
F Trees/Shrubs (indicate size and locations on a diagram)
Remarks
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6.
Alternative Cover (armored rock, concrete, etc.) r N/A
Remarks
7.
Bulges
F Location shown on site map Bulges not evident
Areal extent
Heieht
Remarks
8.
Wet Arcas/W ater Damage
F Wet areas/water damage not evident
F Wet areas
F Location shown on site map Areal extent
Ponding
F Location shown on site map Areal extent
T Seeps
F Location shown on site map Areal extent
T Soft subgrade
F Location shown on site map Areal extent
Remarks
9.
Slope Instability F Slides
F Location shown on site map No evidence of slope instability
Areal extent
Remarks
B.
Benches F Applicable
XN/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
F Location shown on site map F N/A or okay
Remarks
2.
Bench Breached
F Location shown on site map F N/A or okay
Remarks
3.
Bench Overtopped
T Location shown on site map F N/A or okay
Remarks
C.
Letdown Channels F Applicable
XN/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 r Location shown on site map F No evidence of settlement
Areal extent
Depth
Remarks
2.
Material Degradation F Location shown on site map T No evidence of degradation
Material tvpe
Areal extent
Remarks
-------
3.
Erosion F Location shown on site map T No evidence of erosion
Areal extent Dcoth
Remarks
4.
Undercutting I' Location shown on site map I" No evidence of undercutting
Areal extent Depth
Remarks
5.
Obstructions Tvoe
F Location shown on site map
Size
Remarks
F No obstructions
Areal extent
6.
Excessive Vegetative Growth Tvoe
F No evidence of excessive growth
F Vegetation in channels does not obstruct flow
T Location shown on site mat) Areal extent
Remarks
D.
Cover Penetrations Applicable XN/A
1.
Gas Vents F Active F Passive
F Properly secured/locked F Functioning F Routinely sampled F Good condition
F Evidence of leakage at penetration F Needs Maintenance
N/A
Remarks
2.
Gas Monitoring Probes
F Properly secured/locked F Functioning
F Evidence of leakage at penetration
Remarks
F Routinely sampled F Good condition
F Needs Maintenance N/A
3.
Monitoring Wells (within surface area of 1 mdfill)
F Properly secured/locked Functioning Routinely sampled Good condition
F Evidence of leakage at penetration T Needs Maintenance F N/A
Remarks
4.
Leachate Extraction Wells
F Properly secured/locked F Functioning
F Evidence of leakage at penetration
Remarks
F Routinely sampled F Good condition
T Needs Maintenance N/A
5.
Settlement Monuments F Located F Routinely surveyed N/A
Remarks
-------
E.
Gas Collection and Treatment Applicable X N/A
1.
Gas Treatment Facilities
T Flaring I ' Thermal destruction F Collection for reuse
F Good conditionFNeeds Maintenance
Remarks
2.
Gas Collection Wells, Manifolds and Piping
F Good conditionF Needs Maintenance
Remarks
3.
Gas Monitoring Facilities (e.g., gas monitoring of adjacent homes or buildings)
F Good conditionFNeeds Maintenance F N/A
Remarks
F.
Cover Drainage Layer F Applicable XN/A
1.
Outlet Pipes Inspected F Functioning F N/A
Remarks
2.
Outlet Rock Inspected F Functioning F N/A
Remarks
G.
Detention/Sedimentation Ponds F Applicable XN/A
1.
Siltation Areal extent Dcoth F N/A
F Siltation not evident
Remarks
2.
Erosion Areal extent Dcoth
F Erosion not evident
Remarks
3.
Outlet Works F Functioning F N/A
Remarks
4.
Dam F Functioning F N/A
Remarks
H. Retaining Walls F Applicable XN/A
1.
Deformations F Location shown on site map F Deformation not evident
Horizontal displacement Vertical displacement
Rotational displacement
Remarks
2.
Degradation F Location shown on site map F Degradation not evident
Remarks
-------
L Perimeter Ditches/Off-Site Discharge Applicable XN/A
1.
Siltation F Location shown on site map F Siltation not evident
Areal extent Dcoth
Remarks
2.
Vegetative Growth F Location shown on site map N/A
F Vegetation does not impede flow
Areal extent Tydc
Remarks
3.
Erosion F Location shown on site map Erosion not evident
Areal extent Depth
Remarks
4.
Discharge Structure F Functioning N/A
Remarks
Vm. VERTICAL BARRIER WALLS Applicable XN/A
1.
Settlement F Location shown on site map T Settlement not evident
Areal extent Dcoth
Remarks
2.
Performance Monitoring Tydc of monitorine
F Performance not monitored
Freauencv F Evidence of breachine
Head differential
Remarks
IX. GROUND WATER/SURFACE WATER REMEDIES Applicable TN/A
A.
Groundwater Extraction Wells, Pumps, and Pipelines F Applicable X N/A
1.
Pumps, Wellhead Plumbing, and Electrical
F Good conditionF All required wells properly operating F Needs Maintenance F N/A
Remarks
2.
Extraction System Pipelines, Valves, Valve Boxes, and Other Appurtenances
F Good conditionF Needs Maintenance
Remarks
3.
Spare Parts and Equipment
F Readily available F Good conditionFRequires upgrade T Needs to be provided
Remarks
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B. Surface Water Collection Structures, Pumps, and Pipelines F Applicable X N/A
1.
Collection Structures, Pumps, and Electrical
T Good condition F Needs Maintenance
Remarks
2.
Surface Water Collection System Pipelines, Valves, Valve Boxes, and Other Appurtenances
F Good condition F Needs Maintenance
Remarks
3.
Spare Parts and Equipment
F Readily available F Good conditionFRequires upgrade F Needs to be provided
Remarks
C.
Treatment System F Applicable X N/A
1.
Treatment Train (Check components that apply)
F Metals removal F Oil/water separation F Bioremediation
F Air stripping F Carbon adsorbers
F Filters
F Additive (e.s.. chelation asent. flocculent)
F Others
F Good condition F Needs Maintenance
F Sampling ports properly marked and functional
F Sampling/maintenance log displayed and up to date
F Equipment properly identified
F Ouantitv of groundwater treated annuallv
F Ouantitv of surface water treated annuallv
Remarks
2.
Electrical Enclosures and Panels (properly rated and functional)
F N/A F Good conditionFNeeds Maintenance
Remarks
3.
Tanks, Vaults, Storage Vessels
F N/A F Good conditionFProper secondary containment F Needs Maintenance
Remarks
4.
Discharge Structure and Appurtenances
T N/A r Good condition r Needs Maintenance
Remarks
5.
Treatment Building(s)
F N/A F Good condition (esp. roof and doorways) F Needs repair
F Chemicals and equipment properly stored
Remarks
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6.
Monitoring Wells (pump and treatment remedy)
F Properly secured/locked F Functioning F Routinely sampled F Good condition
F All required wells located F Needs Maintenance T N/A
Remarks
D. Monitoring Data X Applicable F N/A
1.
Monitoring Data
x Is routinely submitted on time Is of acceptable quality
2.
Monitoring data suggests:
F Groundwater plume is effectively contained X Contaminant concentrations are declining
Refer to the Data Evaluation Section in the FYR for discussion of monitoring data.
D.
Monitored Natural Attenuation X Applicable N/A
1.
Monitoring Wells (natural attenuation remedy)
x Properly secured/locked F Functioning F Routinely sampled F Good condition
F All required wells located F Needs Maintenance F N/A
Remarks: Observed wells appeared to be secured and undamaged (refer to inspection photos). All wells
were located during the inspection.
X. OTHER REMEDIES
The VIMS at OU5 were observed during the inspection (refer to inspection photographs). Systems
appeared to be in good condition. No operational issues reported. O&M reports have been routinely
prepared.
XI. OVERALL OBSERVATIONS
A.
Implementation of the Remedy
Refer to the discussion of the implementation status of each OU in the Five-Year Review text.
B.
Adequacy of O&M
O&M of the OU5 VIMS is ongoing and is adequate. No other OUs have current O&M requirements.
C.
Early Indicators of Potential Remedy Problems
No issues were observed during the site inspection.
D.
Opportunities for Optimization
No opportunities for optimization were noted during the site inspection.
Site Inspection Team Roster
Personnel
Representing
Phone
Number
Matt Sugar
Jacobs
816.533.7310
Sarah Klescewski
NDEE
402.471.3120
David Wennerstrom
EPA Region 7
913.551.7996
Randy Brown
EPA Region 7
913.551.7978
-------
Trip Report
Photo 1
Description:
Site Inspection Team & MWN-18
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
Trip Report
Photo 2
Description:
MWN-18
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
-
Trip Report
Photo 3
Description:
MWN-12
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
Trip Report
Photo 4
Description:
OU5 Vapor Mitigation System on Commercial Building
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
V,i
Trip Report
Photo 5
Description:
VMS - SS-13
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
WM
Til—II
Trip Report
Photo 6
Description:
VMS: SS-11 & SS-12
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
Trip Report
Photo 7
Description:
OU5 VMS Manifold
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
Trip Report
Photo 8
Description:
MWN-1A & MWN-1B
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
Trip Report
Photo 9
Description:
OU3 : Monitoring Weil Pair
Date: 9/27/2022
Direction: South
Photographer:
David Wennerstrom
-------
Trip Report
Photo 10
Description:
OU2 - MW2A & MW2B
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
Trip Report
Photo 11
Description:
OU2-MW2019 Group
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
Trip Report
Photo 12
Description:
OU2 - Former EPA Treatment Building & Parking Lot
Date: 9/27/2022
Direction: South
Photographer:
David Wennerstrom
-------
Trip Report
Photo 13
Description:
OU2 - VMS at former EPA Treatment Building
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
Trip Report
Photo 14
Description:
OU2 - Former Thermal Treatment Zone
Date: 9/27/2022
Direction: North
Photographer:
David Wennerstrom
-------
File Name:
Photographer: David Wennerstrom
Type of Camera: Samsung S22
Digital Recording Media:
Original copy is stored in:
No changes were made in the original image files prior to storage on the hard drive.
Report Photo #
Photographer
Date
Approx. Time
Description
1
Wennerstrom
09/27/2022
1328
Site Inspection Team & MWN-18
2
Wennerstrom
09/27/2022
1329
MWN-18
3
Wennerstrom
09/27/2022
1337
MWN-12
4
Wennerstrom
09/27/2022
1341
OU5 Vapor Mitigation System on Commercial Building
5
Wennerstrom
09/27/2022
1348
VMS - SS-13
6
Wennerstrom
09/27/2022
1349
VMS: SS-11 & SS-12
7
Wennerstrom
09/27/2022
1355
OU5 VMS Manifold
8
Wennerstrom
09/27/2022
1406
MWN-1A& MWN-1B
9
Wennerstrom
09/27/2022
1408
OU3 : Monitoring Well Pair
10
Wennerstrom
09/27/2022
1413
OU2-MW2A& MW2B
11
Wennerstrom
09/27/2022
1413
OU2-MW2019 Group
12
Wennerstrom
09/27/2022
1421
OU2 - Former EPA Treatment Building & Parking Lot
13
Wennerstrom
09/27/2022
1423
OU2-VMS at former EPA Treatment Building
14
Wennerstrom
09/27/2022
1426
OU2 - Former Thermal Treatment Zone
-------
APPENDIX D - REPORTS
-------
Jacobs chaiienging toc,ay-
Reinventing tomorrow.
Grand Island, NE - Solvent Site
2023 5-Year Review,
September 27, 2022
Initial Data Delivery
-------
5-Year Review (Period 2018-2023)
¦ Performed Groundwater Monitoring on Quarterly Basis
- 2Q2020 GW Event Exempt based on Covid-19
- Five additional Monitoring Wells (MWN-15 through MWN-19) installed in June 2021.
Monitoring well network increased from 12 to 17 Monitoring Wells.
¦ Performed VIMs Monitoring Quarterly including Semi-
Annual sampling
- System Operations were steady throughout the 5-year period except for brief 6-week interruption
at SS-19 due to electrical supply line damage from tenant fork lift.
2
©Jacobs 2019
-------
Recent Regulator Interactions
¦ Supplemental Remedial Evaluation Work Plan submitted February 2, 2021:
- Provided a summary and evaluation of the data to that date.
- Provided recommendations of mid-term next steps:
¦ West Parcel:
- "Monitored natural attenuation is the most suitable option for the OU5 West Parcel at this time... One
additional well location will coincide with a 2016 direct push boring (DPB-07) where PCE in
groundwater was detected at a concentration of 15,600 \iq/\ The second well location will be
installed immediately east of the City Electric Department building wing. This well is to be located half-
way between clean well MWN-1A and the source area, to refine the downgradient extent of the plume."
- "Both of the 2 new monitoring wells will be included in the current quarterly sampling program. MNA
parameters will be sampled at these wells for an initial 4 quarters and then continue on an annual basis
for three years."
3
©Jacobs 2020
-------
Recent Regulator Interactions (continued)
¦ Supplemental Remedial Evaluation Work Plan submitted February 2, 2021
- Provided a summary and evaluation of the data to that date.
- Provided recommendations of mid-term next steps:
¦ East Parcel: Additional investigation in the East Parcel
- Installation of 3 new wells
- "These 3 new monitoring wells will be included in the current quarterly sampling program. MNA
parameters listed in Section 3.3 will be sampled for an initial 4 quarters and then continue on an annual
basis for three years."
- "The data will be evaluated to determine if some form of active remediation is needed for the East area."
4
©Jacobs 2020
-------
WS022
mam
6'T.'2022
w&m
PCE iMgd)
PCE (|igJL)
6W20I22
PCE Groundwater Concentration Map - June 2022
V
PCfc lug.Ll
'1\ :•
o ?Ml
67f2022
PCE I MQrt-)
> ' /' //
MWN-17
BI7)2m
MWN
i'N
V. Vis
rnzL
m * MWN-19
0.91
t: ' /:,7
\y,\\ 1;
6/7j2022
V-'V'-
MWN-19
6.7)2022
6I7J2022
PCE (ua'LJ
M'AS
MWN-tB
MWN-16
mmi
MWN
wf2822
MWN-IB
7
MVVN-10B
0.49 J
'j
MWN-9
©Jacobs 2020
-------
6
EOT2022
TCE(W1)
&70O22
8M02Z
61712022
TCEtygfL)
6'7J2022
672022
6TCG22
TCE Groundwater Concentration Map - June 2022
MWN-X1
TCE
:-J'j L.
MM
¦
MWN
f>fc>
Q:
Vw\
6(7/2022
7 AT', ' HA
rw
MWN-3B
* MWN-19
" _
MWN-2
MWN-15
tceilio'L)
fAVN 15
6/7/2022
TCE [(jg.ll
v;a- =;
6W2Q22
MWN
-13
: •' v. It
MWN-1B
• 'bSU
MWN-9
©Jacobs 2020
-------
6TO022
els 1,2 DCE j(lgiL)
6712022
worn
6,72022
cist J MEWL)
6TO022
6i7'2D22
els 1,2 DCE [|Jg<'L|
OT2022
cis 1,2 DCS (^L)
warn
Cis 1,2-DCE Groundwater Concentration Map - June 2022
v
MWN-ll
cis 1,2 OCELLI
r.Y< n-:j.h
:::
m'i\
" i!> 'iIl
cis 1,2 DCE (ugl)
MWN
<0 14J
MWN*l7
6'7.'202?
MWN-12
•i.r
ijjg'Li
MWN-6B
'.W'J
cis 1.2 DCEi^&t}
MV-'Nfi A
cts 1,2 DCE iHg'l)
&7.'2022
& % MWN-19
MV.!.
<017J
MWN
i. i
'•-'.V N-15
: 7
cis 1t2DCEing1)
V
MWN
c
MWN
IB
&'7.'2022
\i,v\
fOB
BW2022
MWN
©Jacobs 2020
-------
VC Groundwater Concentration Map - June 2022
©Jacobs 2020
-------
9
©Jacobs 2020
-------
<
o
ru
fO
a
%
u
o
V)
10,000
130
c
o
"+->
TO
¦M
C
a>
o
c
o
u
1,000
100
10
cn
cn
o
r\i
PCE, TCE and cis-l,2-DCE Concentration vs Time MWN-10A
o
o
oo
o
no
O
<=t
o
"5t
o
rsi
UD
O
00
o
00
o
UD
«=t
O
CD
O
00
r\l
CM
00
o
m
m
rj
o
LO
fN
r\i
UD
Is*
rsi
00
O
00
-------
PCE, TCE and cis-l,2-DCE Concentration vs Time MWN-10A
i
I
8
13
«*-PCE Concentration
-¦-TCE Concentration
-*-Cis-l,2- DCE Groundwater Remediation Goal
—VC Concentration
10,000
^cis-l,2-DCE Concentration
-*-PCE/TCE Groundwater Remediation Goal
-*-VC Groundwater Remediation Goal
-------
New Wells West Parcel - Groundwater Data
Screen Interval
TetrachloroetSiene
T r ichloroethene
cis-1 2-Dichloroethene
Vinyl Chlo'ide
Weil ID
{fees below ground surface}
Sample Date
pgt
PS/L
pgJL
fJil L
6/30/2021'
09/20/2021
inK'
140 J
104
<214
20.800
18.800
38.1
< il 0
miuJ'15
20-30
12/08/2021
..i s
44,400
<:i ' J
03/09/2022
06/07/2022
9.8
!s> I-
¦:,1 .1+
39.300 J
95,800
€5.5
163 J
MWN-1G
2fi - 30
§1291202:1
09/21/2021
12/09/2021
03/09/2022
ommrnz
10.8
10.0
10.1
14.8
15.9
< 10
2.2 J
3.0 J
1 5
2.-3 J
27 <1
32"
475 J
3.8 J
5_4
M
10.2
17.5
-------
MNA Parameters - West Parcel
Sown Interval
Methane
Efliane
Ethene
Iron fdissofwfl
Manganese (dissolved}
Aikclhhy
Sulfate
Nitrogen, Mirafe
TOC
IfeliD
(iMMiowgNNiM
sufece)
Sample Date:
Pin
pgL
[Jfjl
PfllL
Pgi
rnpl
mgt
IWfil
mgiL
&amm
46 J
<1.3
<1.1
3,54®
2,290
250
133
1J
77
»»2§2f
' _ T
<1.3
<1.1
1,930
1.410
269
105
2.1
7.9
fclWMS
20-®
W3M21
99 J
-'1.3
< 1.1
S,S3®
4,410
IS
28J
MS J
4.9
IMS
its
<13
1.8 J
5,310
4,520
212
30.8
<0.079
12.0 J
mwsom
4S 1
2.7 J
19.6
16,300
8.900
150 J
245
<0.07S
7.4
mmami
:
<1.3
<1.1
511
18.7
347
475
U
2.3
easmzi
<2.8
<1.3
<1.1
- 21 4
9.7
341
405
14
2.9
MWN-16
20-30
mmmi
<2,8
< 1.3
< 1!
« 2<4
8.9
111
46J
17
25
<2.8
<1.3
<1.1
« 214
13.8
320
75.9
13
3.2 J-
mmm
<2.1
<13
<1,1
19.3 J
15.1
291J
520
12
47
• MWN-15 (in the source area) has higher TOC than MWN-16 (immediately downgradient of the
source area) and much higher TOC than the East Parcel wells. This TOC is likely remaining from the
petroleum hydrocarbons detected in the area and has been driving the microbial activity.
• The microbial activity has resulted in reducing conditions producing higher iron and manganese, and
lower sulfate and nitrate (especially compared to the East Parcel).
• The microbial activity has also resulted in the reductive dehalogenation of the PCE/TCE to the
daughter product cDCE providing evidence of ongoing MNA.
• Further deductive dehalogenation of the cDCE produces VC which is ultimately reduced to ethene.
-------
West Parcel VIMs - Installed 2016 at Mid Plans Construction Bldg and City Electric Bldg
Mean Mass Removal Rates - Mid Plains Building
Mean Mass Removal Rates - City Electric Building
-1dDec-16un-1Dec-17lun-1®ec-18lun-1®ec-19un-2QDec-2Qlun-2*Dec-2Uun-2Dec-22
Date
-16Dec-16Jun-17Dec-17Jun-18Dec-18Jun-19Dec-19Jun-2CDec-2QJun-21Dec-21Jun-22Dec-
Date
-------
Remediation System Performance Monitoring
"Each VIMS is expected to operate until sub-slab volatile organic compound (VOC) concentrations can no
longer support a completed VI pathway; subslab vapor concentrations less than the subslab vapor
screening levels of 6000 ug/m3 (PCE) and 293 ug/m3 (TCE) for two consecutive sampling events/'
¦ 10 of 14 Sub-systems in the City Electric building and none of the sub-systems in the Mid-Plains Construction building
have ever been > VISLs (shown in yellow).
Vapor Intrusion Mitigation System Exhaust Sample Results from the City Electric Building
Clebum Street Well Superfund Site (OUSl Grand IslandNebraska
Analyte:
PCE
TCE
PCE
TCE
PCE
Sample Location
Location ID
Industria
1 Vapor
Intrusion
Screenin
g Level1:
6000
293
6000
293
6000
Units
June 29,2016
December 14,2016
June
Sub-System 1
SS-l-CE
Mg/m3
192
1,3
135
1,2
682
Sub-System 2
SS-2-CE
Mg/m3
435
12.9
94.1
2.1
349
Sub-System 3
SS-3-CE
Mg/m3
159
18,5
84.5
4.5
72.6
Sub-System 4
SS-4-CE
Mg/m3
293
3
3.6
0,50 U
7,7
Sub-System 5
SS-5-CE
Mg/rn3
1630
89,8
284
25.3
582
Sub-System S
SS-6-CE
M-g/m3
7330
47,4
9.2
0,60 U
212
Sub-System 7
SS-7-CE
M-g/m3
267
24.6
1.4 J
0.58 U
35,3
Sub-System 8
SS-8-CE
Mg/m3
2570
174
4650
221
14700
Sub-System 9
SS-9-CE
Mg/m3
1310
112
187
27.3
341
Sub-System 10
SS-10-CE
M-g/m3
4060
352
1470
141
2330
Sub-System 11
SS-ll-CE
Mg/m3
40.8
0.54 U
11,5
0,54 U
4,2
Sub-System 12
SS-12-CE
Mg/m3
1870
112
384
27.5
1020
Sub-System 13
SS-13-CE
Mg/m3
349
7.2
56.8
1.2
283
Sub-System 14
SS-14-CE
Mg/m3
12.4
0.54 U
7.7
0.50 U
22.8
Table 8
Vapor Intrusion Mitigation System Exhaust Sample Results from the Mid Plains Construction Building
Cleburn Street We
1 Superfund Site (OU5), Grand Island, Nebraska
Sample Location
Location ID
Analyte:
PCE
TCE
PCE
TCE
Industrial Vapor Intrusion
Screening Level :
6000
293
6000
293
Units
June 29, 2016
December 14, 2016
Sub-System 15
SS-15-MPC
Mg/m3
521
63.6
355
25.4
Sub-System 16
SS-16-MPC
M-g/m3
19
0.97 J
l.S
0.50 U
Sub-System 17
SS-17-MPC
Mg/m3
S7.1
1.6
229
5.1
Sub-System IS
SS-18-MPC
Mg/m3
1.7
0.54 U
1.6
0.56 U
Sub-System 19
SS-19-MPC
Mg/m3
9.1
0.56 U
1.6
0.50 U
Sub-System 20
SS-20-MPC
Mg/m3
2.S
0.58 U
0.82 J
0.50 U
Sub-System 21
SS-21-MPC
Mg/m3
3
0.52 J
1.2 J
0.54 U
Sub-System 22
SS-22-MPC
Mg/m3
5.6
0.77 J
0.50 U
0.50 U
Sub-System 23
SS-23-MPC
Mg/m3
2.S
7.3
0.54 U *
0.54 U *
15
©Jacobs 2019
-------
Sub-Systems with VISL Detections at City Electric Building
Vapor Intrusion Mitigation System Exhaust Sample Results
PCE (ng/m3)
Date (Years)
¦#—Sub-System 6 —•—Sub-System 8 —•—Sub-System 9 Sub-System 10 — — Industrial Vapor Intrusion Screening Level
-------
Sub-systems with VISL Detections at City Electric Building
Vapor Intrusion Mitigation System Exhaust Sample Results
TCE (|ig/m3)
1200
1000
=L
c
-------
East Parcel-Trend Summary
-------
PCE, TCE, cis-l,2-DCE Concentration vs Time MWN-3B
1000
800
o
Q
i
(VI
¦s
T—I
I
'u
T3
C
ro
600
U
CL
400
c
o
+¦>
+->
c
0)
£ 200
o
u
Air Sparge/Soil Vapor Extraction
cn
OO
(Ti
cn
cn
UD
rsi
(N
O
O
CM
cn
LO
o
o
rN
oo
rsi
LD
00
o
o
r\l
csi
rN
fN
O
rsi
M"
Date
no
t-H
o
rsi
00
ix>
tH
O
rN
O
rH
U0
cn
t-H
o
fN
rsi
rN
O
rsi
oo
O
PCE Concentration
-TCE Concentration
-cis-l,2-DCE Concentration
-------
TD
C
CD
ro
£
m
CO
no
PCE, TCE, cis-l;2-DCE Concentration vs Time MWN-3B
200
O
fN
O
rsi
r>.
o->
rH
o
rsl
O
rsj
I-*-
O
rsl
rN
t-H
PCE Concentration
-cis-l,2-DCE Concentration
-cis-l,2-DCE Groundwater Remdiation Goal
O
rN
O
rsl
rN
Date
o
rN
O
rN
UD
rN
rsl
O
rN
m
rN
rN
O
rsl
m
rN
rsi
O
rsi
O
rsi
rsi
rN
O
rN
-TCE Concentration
-PCE/TCE Groundwater Remediation Goal
rsi
rN
O
rsi
-------
PCE Concentration vs Time MWN-7
C
Q)
¦o
03
o
c
5
0
Q
Is-
1
20,0
15.0
m
10.0
5.0
0.0
10/29/08
7/26/11
4/21/14 1/15/17
Date
10/12/19
7/8/22
-PCE Concentration
-------
New Wells East Parcel - Groundwater Data
Screen Interval
Tetrachloroethene
Tiichloraethene
tis-1,2-Dichloroethene
Vinyl Chloride
Well ID
{feet below ground surface)
Sample Date
pg/L
p#L
pglL
pgfl-
6.Q0/2021
34.2
10,5
13.3
< 10
09/20/2021
16,5
4.4
1.4
'0.17
MWN-17
20-30
12/10/2021
17,8
4,9
2.2
-017
03/08/2022
15.4
3,8
1.2
-017
0m&2022
12.7
2.7
1.0J
•- 0.17
6/30/2021
24.3
8,5
8.0
V 1.0
09/21/2021
13.6
2.9
if
0.17
MWN-18
20-30
12/09/2021
18,9
4.7
2.3
< 0.17
03/OB/2022
16,2
3.8
2.0
< 0.17
0&Q&2Q22
19.5
4.7
2.3
<0.17
6/29/2021
< 0.33
< 0.21
< 013
<0.17
09/21/2021
< 0 33
< 0.21
<0.13
< 0.17
MWN-19
35-45
12/09/2021
< 0.33
< 0.21
<0.13
' 0.17
03/09/2022
<0.33
<0.21
<0.13
0.17
oem/2022
< 0 33
< 0.21
<0.13
<0.17
Groundwater Remediation Goal
5
5
70
2
Vapor Intrusion Screening Level
65
7.4
-
2.5
-------
MNA Parameters - East Parcel
¦ i •
Screen Interval
Methane
Ethane
Eflwrw
Iron (dsscifemlf
Manganese (dissolved}
Alkalinity
Sulfate
iflmgen. Nitrate
TOC
[teet below ground
Well IB iirfacel
Sample Date
Pl«_
MS-'L
Pflfl-
Mi'L
mil
niflfl.
mf'L
mg.'L
06/30/2021
<2.8
•t" j
<1.1
155
171
385
137
103
1.0
09/20/2021
<28
-=1 3
<1.1
<21.4
6.8
MS
JLwW
222
90
0 34 J
MWN-17 20- 30
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• Much lower TOC compared to the MWN-15, in the west source area due to lack of
petroleum release.
• As a consequence, reducing conditions from microbial activity are not obvious (little
or no Fe or Mn, or reduction in sulfate and nitrate.
• Reductive dechlorination may still be taking place since the cDCE concentration has
increased relatively to PCE and TCE.
-------
2023 Planned Activities
¦ Continue to monitor West Parcel and feasibility of MNA as remedy
approach.
¦ Continue to monitor East Parcel to allow evaluation of the need for
active remediation.
¦ Provide Work Plan to test feasibility of VIMs shut down.
¦ Evaluate optimizing groundwater monitoring approach.
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FINAL
Remedial Action Completion Report
In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2)
Grand Island, Nebraska
Contract No. EP-S7-17-05
Prepared for:
U.S. Environmental Protection Agency
Region 7
11201 Renner Blvd.
Lenexa, KS 66219
Prepared by:
^Ayuda
410 Acoma Street, Suite A
Denver, Colorado 80204
August 2019
Revision 0
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In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
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In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
TABLE OF CONTENTS
LIST OF ACRONYMS AND ABBREVIATIONS Ill
1.0 INTRODUCTION 1-1
2.0 SITE BACKGROUND 2-1
2.1 Site Geology 2-1
2.2 Site Hydrology 2-1
2.3 Site Hydrogeology 2-2
2.4 Contaminant Distribution 2-2
2.5 Surrounding Land Use 2-2
2.6 Record of Decision 2-3
2.7 Remedial Design/Remedial Action Work Plan 2-3
3.0 FIELD ACTIVITIES 3-5
3.1 Pre-Construction Survey 3-5
3.2 Soil-Vapor Extraction System Abandonment 3-5
3.3 Cleburn Municipal Well Abandonment 3-5
3.4 Building Mitigation/Demolition 3-5
3.5 Monitor and Multi-Phase Extraction Well Installation 3-6
3.6 Remedial System Installation 3-6
3.7 Remedial System Operation 3-7
3.8 Performance Monitoring 3-8
3.8.1 Temperature Monitoring 3-8
3.8.2 Vapor 3-8
3.8.3 Water 3-8
3.9 Pre-Construction Survey 3-9
4.0 RESULTS 4-1
4.1 Total Mass Removed 4-1
4.2 Soil Remedial Action 4-1
4.3 Groundwater Monitoring 4-2
5.0 WASTE DISPOSAL 5-1
6.0 DEVIATIONS 6-1
7.0 SITE RESTORATION 7-1
8.0 HEALTH AND SAFETY 8-1
9.0 LESSONS LEARNED 9-1
10.0 REFERENCES 10-1
Ayuda
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Final Remedial Action Completion Report
In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
FIGURES
Figure 1-1 Site Location
Figure 2-1 Source Area and Well Field Location
Figure 3-1 Monitoring Well Locations and PCE Results
Figure 4-1 Soil Confirmation Sample Locations and PCE Results
Figure 4-2 Extraction Well Locations and PCE Results
TABLES
Table 4-1 Thermal Treatment Zone Temperature Logs
Table 4-2 Soil Confirmation Results for Detected Volatile Organic Compounds
Table 4-3 Monitoring Wells - Groundwater Results for Detected Volatile Organic Compounds
Table 4-4 Extraction Wells - Groundwater Results for Detected Volatile Organic Compounds
APPENDICES
Appendix A MC2 Final Report for the Cleburn Well Superfund Site
Appendix B 3-Phase Inspection Forms
Appendix C Photolog
Appendix D Field Documentation
Appendix D1 - DQCRs
Appendix D2 - Survey Data
Appendix D3 - Well Abandonment Forms
Appendix D4- Building Mitigation-Demolition Forms
Appendix D5 - Well Construction and Development Forms
Appendix D6 - Groundwater Sampling Forms
Appendix D7 - IDW Management Forms
Appendix D8 - Field Change Variance and Deviation Forms
Appendix D9 - Site Restoration Test Reports
Appendix E Analytical Results and DV Reports
Appendix F Cost Summary
Final Remedial Action Completion Report, Cleburn Street, OU-2
August 2019
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Final Remedial Action Completion Report
In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
LIST OF ACRONYMS AND ABBREVIATIONS
amsl above mean sea level
APP Accident Prevention Plan
ASTM American Society of Testing Materials
Ayuda Ayuda Companies
Ayuda Team Ayuda and Teaming Partner MC2
bgs below ground surface
cm/s centimeters per second
°C degrees Celsius
ERH electrical resistance heating
ET-DSP Electro-Thermal Dynamic Stripping Process
ft feet
ft/day feet per day
GAC granular activated carbon
GET groundwater extraction and treatment
gpm gallons per minute
H&S Health and Safety
HSA Hollow Stem Auger
IDW Investigation-Derived Waste
ISCO in-situ chemical oxidation
ISTR in-situ thermal remediation
ISTT in-situ thermal treatment
LDC Laboratory Data Consultants, Inc.
LGAC liquid granular-activated carbon
MC2 McMillan-McGee Corporation
mg/kg milligrams per kilogram
MK MK Environmental
MPE Multi-phase extraction
MWh megawatt-hours
NAPL non-aqueous phase liquid
NDEQ Nebraska Department of Environmental Quality
NDOT Nebraska Department of Transportation
OHM One-Hour Martinizing
OSHA Occupational Safety and Health Administration
OU operable unit
PCE tetrachloroethene
PDI Pre-design investigation
PWS Performance Work Statement
RACR Remedial Action Completion Report
RAWP Remedial Action Work Plan
ROD Record of Decision
SSHP Site Safety and Health Plan
SVE soil vapor extraction
TTZ thermal treatment zone
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In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
UFP-QAPP
Uniform Federal Policy Quality Assurance Project Plan
Hg/L
micrograms per liter
Hg/kg
micrograms per kilogram
USACE
U.S. Army Corps of Engineers
USEPA
U. S. Environmental Protection Agency
VGAC
vapor granular-activated carbon
VOC
volatile organic compound
Ayuda
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Final Remedial Action Completion Report
In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
1.0 INTRODUCTION
This Remedial Action Completion Report (RACR) has been prepared to document performance of tasks
described in the Performance Work Statement (PWS) issued by the U.S. Environmental Protection Agency
(USEPA), Region 7, on July 5, 2017 (USEPA, 2017). The PWS defines the scope of activities necessary to
achieve the required performance objectives for implementing remediation activities at the Cleburn
Street Well Superfund Site Operable Unit 2 (OU-2) in Grand Island, Nebraska (Figure 1-1). The remedial
action is described in the Record of Decision Amendment for OUs 1 through 4 (USEPA, 2012).
Ayuda Companies (Ayuda) and teaming partner McMillan-McGee Corp (MC2) (Ayuda Team) were awarded
Contract No. EP-S7-17-05 forthe remediation of tetrachloroethene (PCE) contamination in subsurface soil
at OU-2 using an Electro-Thermal Dynamic Stripping Process (ET-DSP™), which employs the three
dominant heat transfer mechanisms of electrical heating, conductive heating, and convective heat
transfer as the primary contaminant removal processes. MC2 has prepared a Final Report for the Cleburn
Well Superfund Site detailing thermal operations in conjuncture with this document. The report is
presented in Appendix A.
This RACR describes existing site conditions, remedial objectives and strategy, activities performed to
accomplish the project goals, and treatment results. The RACR is organized as follows:
¦ Section 1.0- Introduction
¦ Section 2.0 - Site Background
¦ Section 3.0 - Field Activities
¦ Section 4.0 - Results
¦ Section 5.0 - Waste Disposal
¦ Section 6.0 - Deviations
¦ Section 7.0 - Site Restoration
¦ Section 8.0 - References
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Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
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Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
2.0 SITE BACKGROUND
The Cleburn Street Well Superfund Site is located in Grand Island, Hall County, Nebraska. Grand Island's
2010 census reports a population of 48,520. The site is situated in central Nebraska, approximately two
miles north of the Wood River and approximately seven miles northeast of the Platte River. The site
encompasses a portion of the downtown area and is surrounded by a variety of light industries,
commercial businesses, and residential dwellings. The primary source area is the former one-hour
martinizing (OHM) dry cleaning facility located on the southwest corner of 4th and Eddy Streets.
PCE contamination in subsurface soil and groundwater was identified in the late 1980s at various
locations around downtown Grand Island, collectively known as the Cleburn Street Well Site. The USEPA
formerly separated the various locations into five Operable Units (OUs):
¦ OU-1, which includes subsurface soil contamination at the former OHM dry-cleaning facility.
¦ OU-2, which includes groundwater contamination (saturated soils) emanating from the OHM facility.
¦ OU-3, which addressed groundwater contamination emanating from Liberty Cleaners located at 9th
and Eddy.
¦ OU-4, which included groundwater contamination emanating from Ideal Cleaners located at 1st and
Elm.
¦ OU-5, which included soil and groundwater associated with the Nebraska Solvent Company located
at 3rd and Lincoln.
A remediation system was installed at OU-1 and OU-2 in 1998, which was composed of a groundwater
extraction and treatment (GET) system and a soil vapor extraction (SVE) system. The OU-1 SVE system
was operated continuously from July 2011 through February 2012, to remove volatile organic compounds
(VOCs) from the subsurface.
The OU-2 GET system consisted of three groundwater extraction wells and a tray air stripper with chemical
cleaning system. All the groundwater extraction wells and four of the vapor extraction wells are in the
frontage road adjacent to the former OHM dry cleaning facility, and one vapor extraction well, the
remediation equipment, and controls are housed in a pre-engineered building installed during
construction. The GET system has been inactive since December 2009, when a pilot study for in-situ
chemical oxidation (ISCO) treatment of groundwater in the source area was initiated. Performance
sampling events conducted after the last ISCO injection in March 2010 through May 2011 indicated that
contaminant levels in monitoring well samples in the source area had decreased from pre-injection levels.
However, analytical results from subsequent sampling events indicated that concentrations of PCE had
rebounded to pre-ISCO injection levels.
2.1 Site Geology
The lithology at OU-2 consists of a silty sand unit of variable thickness approximately 28 feet (ft) to 39 ft
below ground surface (bgs). Above and below the silty sand unit are unconsolidated deposits of silty sands,
sand, and gravelly sands with occasional very thin to thin, clayey sand layers and sandy clay layers. The
Fullerton Formation, which consists of very stiff, slightly moist, greenish-gray clay with low to medium
plasticity, is found at approximately 90 ft bgs.
2.2 Site Hydrology
Regionally, the State of Nebraska is drained by the Missouri River and Platte River systems. The Missouri
River has the Platte River as its major Nebraska tributary. The City of Grand Island is in the central portion
of the Platte River Basin, approximately seven miles to the north/northwest of the Platte River, which
Ayuda
Final Remedial Action Completion Report, Cleburn Street, OU-2
August 2019
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Final Remedial Action Completion Report
In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
flows from the southwest to the northeast. Site surface runoff is toward the east and southeast, and is
controlled by urban features, such as gutters and storm sewers. Runoff is discharged to the Wood River,
two miles south of the site, which flows to the northeast and eventually into the main channel of the
Platte River, approximately 10 miles northeast of the site. Average grade across the site is reported as
0.05 percent (HGL, 2011).
2.3 Site Hydrogeology
The principal source of groundwater underlying the region occurs as an unconfined water table within the
alluvial sands and gravels of the Grand Island Formation, with an average depth to water being
approximately 20 ft bgs (HGL, 2011). Regionally, the unconfined aquifer extends to the top of the Fullerton
Formation, having a total thickness of about 70 to 90 ft. The predominant regional groundwater flow
direction within the water table aquifer is to the southeast (HGL, 2011).
Hydraulie conductivities of the lithologic units in the in-situ thermal remediation (ISTR) area range from
an average of 2.33 x 10"4 centimeters per second (cm/s) to 2.23 x 10"2 cm/s based on the 2014 sieve
analysis results and historic hydraulic testing. Groundwater seepage velocities were calculated for the
lithologic units in the ISTR area using data collected during the 2014 pre-design investigation (PDI), as well
as historical data, and are generally less than 1 foot per day (ft/day) due to the low-relief water table.
Pumping tests conducted in extraction well EW-1, which is screened through the silty sand layer to a depth
of 57 ft bgs reportedly resulted in a hydraulic conductivity of 345 ft/day and a calculated seepage velocity
of 3.5 ft/day (EPA, 2012).
The State of Nebraska has designated the aquifer impacted by the Cleburn Street Well Superfund Site as
a Class GA Groundwater Supply. Class GA is a groundwater supply which is currently being used as public
drinking water supply or is proposed to be used as a public drinking water supply. The groundwater
contamination caused the State of Nebraska to designate the Site as a Remedial Action Class 1, requiring
the "most extensive remedial action measures" to clean up the groundwater to drinking water quality
suitable for all beneficial uses (USEPA, 2012).
2.4 Contaminant Distribution
While past operation of the SVE system significantly reduced contaminant mass in the vadose zone,
contaminants of concern remained in saturated soil and groundwater (HGL, 2015). Based on previously
collected sample analytical results from PDI samples collected in 2014, 2015, and 2016, PCE contamination
was present in soil on the northern boundary of the investigation area, where it was detected at 16,000
micrograms per kilogram (ng/kg) at 30 to 35 ft bgs. PCE was identified in soil samples beneath the OHM
building in the 25 to 30 ft bgs sample interval at a concentration of 900 ng/kg. In addition, PCE was
detected in soil samples to the east of the source area beneath Eddy Street at concentrations as high as
5,800 ng/kg from the 30 to 35 ft bgs sample interval.
Results of the PDI sampling events conducted in 2014, 2015, and 2016 indicated that the highest
concentrations of PCE contamination in groundwater appear to be migrating away from the source area,
with the highest concentration detected under Eddy Street at 110,000 ng/L. Groundwater samples from five
boreholes in Eddy Street also had concentrations of PCE exceeding 2,000 ng/L. This concentration exceeds
the one percent solubility for PCE and suggests the potential presence of a non-aqueous phase liquid (NAPL).
2.5 Surrounding Land Use
The former OHM building currently houses a vehicle repair garage and a church with associated support
rooms. A tire shop is in a building immediately west of the former OHM building and shares a common
wall with the church. Buildings near the OHM site are predominantly commercial businesses and
residential properties. To the east of Eddy Street is an auto detailer, a car dealership/landscaping business,
Final Remedial Action Completion Report, Cleburn Street, OU-2
August 2019
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In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
and a thrift store. While the vehicle repair bay and church were evacuated for the duration of ISTR system
construction and operation, the buildings east of Eddy Street remained occupied.
No land uses are identified in the 2012 OU 1-4 Record of Decision (ROD) Amendment (USEPA, 2012) as
having been restricted due to site contamination. However, institutional controls restricting groundwater
use are a requirement of the ROD, and the City of Grand Island has enacted an ordinance restricting both
the use of groundwater and installation of new groundwater drinking supply wells. The Amended ROD
anticipated future land use of the site to remain unchanged from current use.
2.6 Record of Decision
In June 1996, USEPA signed a ROD that selected SVE and treatment by carbon adsorption to address
subsurface soil (OU-1) at the OHM source area and GET by air stripping to address groundwater (OU-2) at
the OHM (EPA, 1996). The ROD also included groundwater monitoring and institutional controls, with a
contingency for SVE at two other dry-cleaning facilities: Liberty Cleaners (OU-3) and Ideal Cleaners (OU-
4) (EPA, 1996). Upon signing the ROD, USEPA split the actions into the separate OUs to address each area
more expeditiously.
The Remedial Design for OU-1 and OU-2 was completed and approved in September 1997. The design for
OU-1 (subsurface soil contamination at the OHM facility) included installation of an SVE and treatment
system utilizing an existing SVE process skid equipped with granular activated carbon (GAC) canisters. The
design for OU-2 (groundwater contamination at the OHM facility) included demolition and reconstruction
of a portion of the existing building foundation, construction of a pre-engineered building, and installation
of a GET system.
In September 2012, USEPA signed a ROD Amendment (EPA, 2012) for OU-1 through OU-4 that selected
ISTR for the remaining OU-2 groundwater and saturated soil source area. The ISTR portion of the amended
ROD was implemented for soil at OU-2 as prescribed in the PWS (USEPA, 2017).
2.7 Remedial Design/Remedial Action Work Plan
The Final Remedial Action Work Plan (RAWP) was approved by the USEPA in February 2018 (Ayuda, 2018),
and notice to proceed was issued on February 13, 2018. The RAWP describes existing site conditions,
remedial objectives and strategy, and activities planned to accomplish the project goals.
The remedial goal described in the RAWP addressed ISTR treatment of PCE present in saturated soil above
cleanup goals of 890 ng/kg in the OU-2 thermal treatment zone (TTZ). The ISTR TTZ encompasses the primary
source area around the former OHM dry cleaning facility located on the southwest corner of 4th and Eddy
Street. The TTZ covers approximately 12,750 square feet and extends from an approximate elevation of
1,848 ft above mean sea level (amsl) to 1,823 ft amsl, which is from approximately 20 ft to 45 ft beneath the
former dry-cleaning facility. The source area, and well field layout of the TTZ are shown on Figure 2-1.
The remedial objectives and performance standards for the specified treatment zone are:
¦ maintain a minimum temperature of 88 degrees Celsius (°C) at each temperature sensor within the
TTZ for a total of at least 30 days, and;
¦ decrease concentrations of PCE in soil to less than 890 ng/kg at each confirmation soil sampling
location within the TTZ.
Temperatures within the TTZ were continually monitored using the temperature probes. Temperatures
were increased or decreased, as needed, by adjusting electrode currents until it could be demonstrated
that the treatment system achieved, and maintained, the target temperature of 88°C within the TTZ.
Final Remedial Action Completion Report, Cleburn Street, OU-2
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Final Remedial Action Completion Report
In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
Confirmation soil samples were collected at 15 locations within the TTZ. Soil boring and sampling depths
were corrected for a baseline surface elevation of 1,866.5 ft amsl, so that the target sample depth was
consistent between borings. For example, on Eddy Street where surface elevations are progressively lower
northwest to southeast, the TTZ was shallower. Soil samples from the 15 locations were collected at 5-ft
intervals to demonstrate achievement of the remedial goal of 890 ng/kg for PCE.
Preparatory and initial inspections (Appendix B) were held for each of the following Definable Features
of Work, identified in the approved Contractor Quality Control Plan (CQCP) (Ayuda, 2018):
1. Pre-construction Building Survey
2. Site Preparation and Mobilization
3. Pre-construction Building Mitigation/Demolition
4. Existing Well, Borehole, and SVE/Groundwater Collection Line Abandonment
5. Installation of ISTR System including:
- Underground Utilities Location
- Above Ground Utilities Location
- Electrode Well Installation
- Multi-Phase Extraction Well Installation
- Temperature Sensor Well Installation
- Monitoring Well Installation
- Above Ground Remedial System Component Installation
6. System Startup
7. System Operation and Performance Monitoring
8. Effectiveness Monitoring including:
- Soil Sampling
- Groundwater Sampling
9. Site Restoration including:
- Eddy Street
- Frontage Roads
- Pavement and Sidewalks
10. Project Closeout including:
- Infrastructure Breakdown
- Equipment Demobilization
- ISTR Abandonment
11. Abandonment of the Cleburn Street Municipal Well
Final Remedial Action Completion Report, Cleburn Street, OU-2
August 2019 PAGE 2-4
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In-situ Thermal Remediation
Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
3.0 FIELD ACTIVITIES
A Kickoff Meeting was held on-site on February 12, 2018 with representatives from Ayuda, MC2, Peterson
Drilling, USEPA, and the Nebraska Department of Environmental Quality (NDEQ) prior to beginning field
activities. The following section summarizes the field activities performed to meet project objectives.
Details on system operation and performance data are presented in Appendix A Project photographs
detailing site activities and progress are presented in Appendix C. Daily Quality Control Reports
documenting the day-to-day activities for the duration of the project are presented in Appendix Dl.
3.1 Pre-Construction Survey
Utility locates and site photographs were taken on September 26 and 27, 2017 during the pre-construction
survey. Ayuda personnel met with Olsson Associates to detail pre-construction survey requirements. Spot
elevations and horizontal controls were obtained from all affected building corners near the treatment
area, all marked utility locations were surveyed, and frontage road elevations, railing elevations, and
roadway elevations were surveyed by a licensed surveyor (Appendix D2).
3.2 Soil-Vapor Extraction System Abandonment
While operation of the SVE and GET systems had significantly reduced contaminant mass in the vadose
zone, PCE mass remained in saturated soils and groundwater, and the system was abandoned in order to
install the ITSR system. In February 2018, 32 wells were abandoned by Peterson Drilling which included
10 monitoring wells, 10 injection well/monitoring wells, nine SVE wells, and three extraction wells. Notice
of Well Decommissioning Reports for each well were submitted to the State of Nebraska to document the
well abandonments. Documentation related to the well abandonment is provided in Appendix D3.
3.3 Cleburn Municipal Well Abandonment
Prior to demolition of the Cleburn Street Municipal well house, an asbestos inspection was completed by
a State of Nebraska-licensed Asbestos Building Inspector. The inspection identified exterior window
glazing as containing asbestos and it was subsequently abated and disposed of by Great Plains Asbestos
Control, Inc. on September 21, 2018. Electrical service was terminated by the City of Grand Island and the
water pipe from the well was capped at the main by O'Flara Construction on October 4, 2018 according
to the demolition permit and Scarborough Construction completed demolition and disposal of the well
house on October 22, 2018. The Cleburn Street Municipal Well was abandoned by Downey Drilling on
November 1, 2018 according to NAC Title 178 Chapter 12. Downey Drilling used a fabricated hydraulic
tool to remove each section of concrete well casing, a tremie pipe to place neat cement grout to within
10 feet below ground surface, placed bentonite hole plug chips to 2 feet below ground surface, and topsoil
was emplaced to ground surface. A Notice of Well Decommissioning Report was submitted to the State
of Nebraska. Documentation related to the well abandonment is provided in Appendix D3.
3.4 Building Mitigation/Demolition
Ayuda supervised building demolition from March 21 to 25, 2018, with services and crew provided by
Scarborough Construction, Inc. Asbestos abatement was performed by Great Plains Asbestos Control,
Inc., and took place immediately following building demolition from March 27 to 29, 2018. Abatement
was conducted according to Nebraska Administrative Code (NAC) Title 178, Chapter 22 - 014.02 (Work
Practices to be Followed for Outdoor Asbestos Removal Projects). Abatement, demolition, and Final
Clearance Inspection was performed by a State of Nebraska-certified Building Inspector. Documentation
related to asbestos inspections, permits, abatement, demolition, and disposal is provided in Appendix D4.
Final Remedial Action Completion Report, Cleburn Street, OU-2
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Cleburn Street Well Superfund Site Operable Unit 2
Grand Island, NE
3.5 Monitor and Multi-Phase Extraction Well Installation
A total of eight groundwater monitoring wells were installed in pairs of two from February 21 through
April 14, 2018. Two well pairs (four wells) were installed within the TTZ and two well pairs (four wells)
were installed downgradient of the TTZ and outside of Eddy Street. Well locations are illustrated on
Figure 3-1.
All eight groundwater monitoring wells were constructed in accordance with the approved RAWP; wells
located within the thermal treatment system (EM-MW01S, EM-MW01D, EM-MW02S, and EM-MW02D),
were constructed of 2-inch diameter stainless-steel casing with 5-ft wire-wrap screens and carbon steel
risers and flush-threaded joints. Wells located outside the thermal treatment area (EM-MW03S, EM-
MW03D, EM-MW04S, and EM-MW04D) were constructed of polyvinyl chloride casings.
A total of 39 temporary multi-phase extraction (MPE) wells were installed by Peterson Drilling in March and
April 2018 using hollow-stem auger and mud rotary drilling techniques at select locations. MPE well
construction was performed according to the RAWP specifications, where the bottom of the extraction wells
contained a carbon steel sump for silt management set into bentonite with an end cap. Extraction wells
were constructed with approximately 40 feet of stainless-steel well screen placed above the sump, and the
wells were equipped with a downhole compressor-air-assisted vacuum groundwater recovery tube.
All wells were developed in accordance with Standard Operation Procedure 4, Final UFP-QAPP Worksheet
#21. Well construction and development logs are presented in Appendix D5.
3.6 Remedial System Installation
Ayuda subcontracted drilling to complete the installation of the subsurface infrastructure electrodes and
temperature wells. MC2 subcontracted MK Environmental (MK) to provide the multiphase treatment
system and supply and install the conveyance piping to conduct in-situ thermal treatment (ISTT) using ET-
DSP™. For more detailed descriptions of the remedial system design, installation, and operation, refer to
the MC2 report located in Appendix A.
Electrodes and temperature/pressure and vacuum monitoring wells were installed from February to April
2018 via hollow-stem auger and mud rotary where necessary due to flowing sands and caving boreholes
at select locations.
The treatment system equipment, conveyance piping, as well as the above-grade components of the ET-
DSP™ system was installed from February through March 2018. Installation activities were performed by
representatives of MC2, MK, and the licensed electrical subcontractor. Tasks performed include:
¦ Offloading and installing the well field conveyance piping;
¦ Offloading and placing the skid-mounted groundwater treatment train (heat exchangers, chiller, holding
tanks, back-up generator, regenerative and sacrificial carbon, etc.) as well as five water circulation
systems (WCS), five power delivery systems (PDS), one distribution panel, and one switch gear;
¦ Installing the MPE well heads;
¦ Installing the liquid slurp tubes in the MPE wells;
¦ Connecting the vapor-recovery, groundwater recovery, and compressed air supply lines to each MPE
well and vapor-recovery supply lines to each Shallow Vapor Extraction well;
¦ Installing the optiTAM™ temperature sensors;
¦ Installing and connecting the water injection lines to the electrodes and WCS units;
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¦ Interconnecting piping and/or hoses between vapor treatment and groundwater treatment units and
tanks;
¦ Dropping power including placement of a new transformer;
¦ Installing meter boxes, disconnects, conduit, wiring, and sensor cable for the electrical power supply
and control systems;
¦ Grounding wells, equipment, fencing, and other components for safety;
¦ Connecting all motors, solenoids, and sensors; and,
¦ Installing internet service and a data server.
3.7 Remedial System Operation
Normal operations ran for a total of 165 days, from June 27 to December 9, 2018. The system electrodes
were de-energized on December 10, 2018 to allow for safe groundwater sampling from extraction wells.
The electrical resistance heating (ERH) system operated at a power input which exceeded the numerical
simulation. A significant loss of thermal energy was encountered in the bottom of the targeted interval
due to higher groundwater flow velocities around the 1,823 amsl interval (associated with the higher
permeability gravels), so the power delivery to this zone was increased significantly. Additionally, an
electro-steam generator was installed on September 9, 2018, and sensor wells were brought on electrical
phase to enhance the delivery of energy to the subsurface. Sensor wells were screened from 1,822.5 to
1,825.5 ft amsl to allow for an efficient and direct delivery of thermal energy to the thermally-recalcitrant
zone.
In total, approximately 3,312.2 megawatt-hours (MWh) of energy was directed to the subsurface through
electrodes, electro-steam generators, and on-phase sensor wells while the numerical simulation
predicted 2,769 MWh would be sufficient to heat the Site. There was limited downtime throughout
operations, resulting primarily from tap changes, movement of optiTAM™ sensor locations, and the
installation of electro-steam generators.
The multiphase extraction systems operated as intended. The subsurface lifting station, located on the
west side of North Eddy Street, failed mechanically and was replaced on August 11, 2018. The chillers
feeding the liquid/vapor heat exchangers functioned poorly throughout the project but did not affect the
overall treatment efficiency. All issues were resolved in a timely manner by the field operators, supported
by the ERH contractor.
Groundwater results from the December 10, 2018 sampling event contributed to decision to initiate
confirmation soil sampling. At the time of shutdown, contaminant mass removal rates had reduced
significantly. The maximum mass removal rate from the Site occurred from August to September 2018
when average formation temperatures approached the co-boiling temperature of 88°Cfor PCE and water.
All removed mass was sorbed into the sacrificial vapor granular-activated carbon (VGAC) and liquid
granular-activated carbon (LGAC) media, and no additional attenuation or destruction methods were
employed.
To assess fugitive emissions, ambient air was measured on weekdays at the following locations: inside
the office; in the Landscape Office; in the Dent Express Detail Shop; in the Miller Tire shop; in the garage
housing the Treatment System; and in the Blessed Sacrament Thrift Store. Spikes in concentration were
recorded on October 19, and on December 18th. Both times, the spike in concentrations was related to
a malfunctioning PID, and after the reading was recorded the operator recalibrated the machine. No
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odors were detected by operators and no complaints from occupants of any building were received
throughout the project.
3.8 Performance Monitoring
3.8.1 Temperature Monitoring
Temperature was monitored by 12 sensor strings across the site, each screened with one sensor every
3.28 ft (1 meter) in the 1,823 to 1,848 ft amsl treatment interval. The average temperature of each depth
interval across the site are shown as Figures in the MC2 Final Report located in Appendix A. The
temperature response was uniform across the intervals, except for the lowest interval
(1823.36-1826.64 ft amsl). The contractual milestone of achieving a minimum temperature of 88°C on
each temperature sensor within the treatment zone for a total of at least 30 days was achieved on
December 8, 2018, at which point the system was de-energized. Leading up to this date, various sensors
had already achieved the 30-day requirement. To limit the consumption of energy in the shallow zone
and provide additional energy to the lower zones, the power supplied to electrodes in compliant areas
was reduced, leading to a decrease in the average temperatures noted after November 20, 2018. During
steam injection, optiTAM™ temperature sensors were deployed in nearby MPE wells to continue
temperature monitoring in order to verify a minimum temperature of 88°C at each temperature sensor
within the TTZ. Process monitoring
Power consumption was continuously monitored by the ET-DSP™ system throughout the operating period
and confirmed through monthly utility invoices. Temperature data was measured continuously, translated
to the MC2 server every 15 minutes, and reported as a daily average for each individual sensor. Water
flow to each individual electrode was measured internally in the WCS units, and field verified in
comparison to time-stamped totalizer readings. The data was reviewed by MC2 staff daily.
The MPE system was monitored by the operators at a minimum once per week. At each extraction well,
the operators visually confirmed liquid flow, measured and balanced vapor flow with a pitot tube
assembly and by adjusting ball valves, and recorded temperature and vacuum from gauges. The data was
manually uploaded to the server and reviewed periodically by MC2 staff. Liquid extraction rates were
controlled by adjusting the solenoid on-off times on the compressed-air assisted groundwater recovery
lines. The timers were controlled remotely via the server.
The treatment system was monitored by the operators five times per week and chiller performance, heat
exchanger effectiveness, level controls in each liquid holding tank, and pressures on both liquid and vapor
GAC units were observed and recorded, then uploaded to the server. Any discrepancies and issues resulting
from the analysis of this data was flagged by MC2 staff and addressed in consultation with MK personnel.
3.8.2 Vapor
The average vapor flow (which did not include condensable flow) for the project, recorded from pitot tube
assembly pressures, then calculated to air flow, was 371.6 standard cubic feet per minute. The extraction
rate was consistent throughout system operation. Extraction was achieved across the entire treatment
zone as a result of the frequent confirmation and balancing of flows from individual extraction wells.
3.8.3 Water
At the onset of operations, the average total groundwater extraction and condensable flow rates ranged
from eleven to twelve gallons per minute (gpm), while injection requirements to electrodes were lower.
This resulted in an over-extraction of groundwater and an associated loss of thermal energy from the Site.
To counter that effect the extraction rates were lowered over the course of fieldwork. As zones achieved
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the 30-day temperature criteria and electrodes were turned off or power reduced, the corresponding
injection and extraction decreased. In total, 1,204,309 gallons were injected through the ET-DSP™
electrodes; 72,368 gallons of cold water-equivalent injected as steam; and 1,503,538 gallons of water
extracted by December 13, 2018. The average extraction over the course of fieldwork was 5.1 gpm.
Hydraulic control of the site was achieved over the project duration by maintaining a cumulative
extraction to injection ratio greater than unity. The average ratio achieved over the life of the project was
1.17. At each extraction well, located inside the periphery of the heated volume, the drawdown resulted
in an inward hydraulic gradient, ensuring hydraulic control. The site as a whole operated under the same
principle -greater extraction than injection resulted in an inward hydraulic gradient in the area of thermal
influence.
The remainder of the extracted groundwater and non-contact process water was discharged to the sanitary
sewer under an approved permit with the City. Liquid effluent results are included in Appendix E.
3.9 Pre-Construction Survey
Ayuda personnel met with Olsson Associates to detail post-construction survey requirements. Spot
elevations and horizontal controls were obtained from all previously surveyed building corners near the
treatment area by a licensed surveyor there were no changes in the foundation elevations post-
treatment. (Appendix D2).
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4.0 RESULTS
The remedial objectives arid performance standards for the specified treatment zone were to maintain a
minimum temperature of 88°C at each temperature sensor within the TTZ for a total of at least 30 days,
and decrease concentrations of PCE in soil to less than 890 |ig/kg at each confirmation soil sampling
location within the TTZ.
The following section presents a summary of total mass of contaminants removed, and remedial
objectives met along with results from groundwater and soil sampling at the TTZ.
4.1 Total Mass Removed
The remedial system operation removed 30.4 pounds of PCE in the liquid and condensable phase, and 0.6
pounds of other contaminants These masses were calculated based on bi-weekly laboratory analysis of
treatment system samples. Other contaminants in the liquid phase, ranked in order of prevalence, consisted
of acetone, naphthalene, and m,p-xylenes. The other contaminants were likely the result of total petroleum
hydrocarbon contamination present in the northwest corner of the treatment area. Hydrocarbon staining
and odors were present during drilling, specifically at locations E-Dl and ED-2. Hydrocarbon contamination
was likely present from the previous operation of the site a gas station. Similarly, there were 806.4 pounds
of PCE removed in the vapor phase, and 244.3 pounds of other contaminants. Other contaminants in the
vapor phase, ranked in order of prevalence, consisted of n-octane, n-heptane, and n-nonane. The total mass
of contaminants removed from the Site is 1,081.7 pounds. The PCE removal overtime is illustrated below.
PCE Mass Extracted in Liquid and Vapor Streams
2018-06-27 to 2018-12-31
Jul01 Aug01 Sep01 Oct01 NovOI Dec01
2018 2018 2018 2018 2018 2018
PCE Mass Recovered in Liquid and Vapor Stream in Previous Period
Cumulative PCE Mass Recovered from the Liquid and Vapor Stream Since Startup -+
4.2 Soil Remedial Action
Temperatures within the TTZ were continually monitored using the temperature probes and recorded on
a daily basis. The remedial objective of a minimum temperature of 88°C at each sensor for a total of at
least 30 days is summarized in Table 4-1.
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Soil confirmation sampling took place from December 17 through 21, 2018, based on extraction well
groundwater sampling results. Extraction well results were used as a determining factor for to collect
confirmation soil samples. Following results delivery from the December 10, 2018 extraction well
sampling event, it was determined that PCE levels in soils would likely be below the performance
objective. Samples were collected from six discrete depths at 15 locations within the TTZ using a direct-
push drill rig. All soil sample results were below the 890 ng/kg threshold. Soil confirmation sample
locations and results are presented on Figure 4-1 and summarized in Table 4-2.
All sampling procedures were followed in accordance with the approved Field Sampling Plan located in
the UFP-QAPP. Flot, discrete depth soil sampling was achieved by lining the inner sample collecting pipe
with segmented, stainless steel sample collecting tubes, allowing Peterson drilling to isolate a specific
sample zone. Sample collection tubes were immediately covered and sealed with aluminum foil and
placed on ice for cooling to prevent volatilization of contaminants. The samples were collected after
cooling and submitted to EMAX laboratories under proper chain of custody for analysis using USEPA
method 8260B. (Appendix E).
Soil sample borings were abandoned per Nebraska Administrative Code, Title 178, Water Well Standards,
and Chapter 12-012.08A.
4.3 Groundwater Monitoring
Groundwater samples were analyzed for the presence of VOCs using USEPA Method 8260B. Three rounds
of groundwater monitoring were to be conducted during ISTR system operation and one round was to be
conducted prior to confirmation soil sampling. Groundwater monitoring wells were left in place for future
monitoring. Groundwater sampling forms are located in Appendix D6.
Baseline groundwater sampling was conducted June 1 and 2, 2018 from the eight installed wells, with PCE
concentrations ranging from 400 ng/L to 82,000 ng/L. Sample locations are shown on Figure 3-1 and
results are summarized in Table 4-3. Baseline groundwater samples were collected utilizing low-flow
techniques with a Geosub pump run through a water quality multi-parameter meter for real-time
groundwater quality parameter collection. All subsequent rounds of groundwater sampling from
monitoring and extraction wells were completed using peristaltic pump as opposed to a Geosub pump.
A sampling event was conducted on October 16, 2018 at eight extraction well locations (X-Bl, X-Dl, Z-D2,
X-H3, Kl-l, Z-12, L-Ll, and X-Nl) and analyzed for VOCs by USEPA method 8260. The extraction well
locations are illustrated on Figure 4-2. A second extraction well sampling event took place on December
10, 2018 for comparison and system performance at 12 extraction wells (X-A3, X-Bl, X-B2, X-Cl, X-D2, X-
D3, X-El, X-E2, X-E3, X-Fl, X-F2, and X-F3), two of which were from the same well due to the high levels
of PCE concentrations (X-Bl and X-D2). The analytical results are summarized on Table 4-4. Based on
discussions with the EPA Project Manager, the December 10, 2018 sampling event would be used in lieu
of one of the four required groundwater monitoring events per project requirements in Section 9.2 of the
A second monitoring well sampling event was conducted on December 11 and 12, 2018. Samples
showed significant decreases in PCE concentrations in groundwater, ranging from 0.23 ng/Lto 340 ng/L
(Table 4-3).
A final monitoring well sampling event took place on April 4 and 5, 2019. Sample results showed
significant decrease in PCE concentrations in groundwater when compared to the baseline event. At
wells located within the TTZ, PCE concentrations decreased at EM-MW01S from 82,000 to 140 ng/L; at
RAWP.
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EM-MW01D from 5,600 to 0.16 ng/L; at EM-MW02Sfrom 11,000 to 3.8 ng/L; and at EM-MW02D from
750 to 5.6 ng/L. At wells located outside and downgradient of the TTZ, PCE concentrations decreased at
EM-MW03S from 1,600 to 110 ng/L; at EM-MW03D from 510 to 140 ng/L; at EM-MW04S from 400 to
180 ng/L; and at EM-MW04D from 8,500 to 250 ng/L. Results are shown on Figure 3-1 and summarized
in Table 4-3.
4.3 Data Quality Review
The analytical data for the groundwater samples collected from the monitoring wells in June 2018 and
December 2018, the groundwater samples collected from the extraction wells in October 2018 and
December 2018, and the confirmation soil samples collected in December 2018 were reviewed for
quality. The data quality review was performed by Laboratory Data Consultants, Inc. (LDC) of Carlsbad,
California in accordance with the Final Uniform Federal Policy Quality Assurance Project Plan In-situ
Thermal Remediation Cleburn Street Well Superfund Site OU2 Grand Island, Nebraska (QAPP) (Ayuda,
2018). Based upon the data validation, no results were rejected, therefore, 100% of the analytical results
are considered usable or usable as qualified and adequate to fulfill program objectives. This meets the
95% program objective, as specified in the QAPP. The data validation reports and the laboratory data
packages are presented in Appendix E. No data validation was performed for the analytical results from
the final groundwater sampling event conducted in April 2019, as directed by the EPA Project Manager.
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5.0 WASTE DISPOSAL
Investigation-Derived Waste
Investigation-Derived Waste (IDW) consisted of soil cuttings from boring advancement, purge,
development, and decontamination water, disposable PPE, concrete cuttings, and other household-type
trash. All IDW was managed in accordance with Ayuda SOP 11 and/or local regulatory requirements
(Ayuda, 2017a).
Soil cuttings from installation of subsurface thermal system components (electrodes, extraction wells,
temperature wells) and monitoring wells were placed in lined roll-offs and staged on site until analytical
results were received from the laboratory. Based on analytical results from the soil cuttings, each roll-off
was disposed of as non-hazardous waste at the Butler County landfill, which is an approved EPA Off-site
disposal facility (CERCLA §121 (d)(3)). Waste manifests are provided in Appendix D7.
Asbestos Waste Disposal
Asbestos abatement and demolition occurred from March 27 to 29, 2018 and was performed by Great
Plains Asbestos Control, Inc. in accordance with NAC Title 178 Chapter 22. The demolition debris
containing asbestos material was loaded into double-lined haul trucks and disposed atthe City of Holdrege
Prairie Hill Landfill in Holdrege, Nebraska. Waste disposal manifests are in Appendix D7.
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6.0 DEVIATIONS
Throughout the course of fieldwork at the Site, eight field work deviations to the approved RAWP and
UFP-QAPP were approved for changing site conditions, additional data collected in the field, and health
and safety purposes. The following section describes the documentation of field changes. Documents of
Field Change forms are presented in Appendix D8.
Documentation of Field Change 01: Revised fencing layout to capture three field adjustments
¦ Fencing needed modification to account for city utilities, parking and business access, and
proper security.
Documentation of Field Change 02: Electrode/Extraction well/Temperature Well Installation
¦ Drillers to use 8/16 sand instead of 10/20 for filter pack during well construction;
¦ electrodes were moved slightly to avoid and prevent disturbance to a water line running through the
Site that was previously thought to be abandoned but was confirmed to be active;
¦ discrepancies noted during Preparatory Meeting for extraction well and temperature well installation;
namely screen change from 30 ft to 40 ft, sump being 2 ft as opposed to 1.5 ft, and 16/30 sand being
used instead of 20/40.
Documentation of Field Change 03: Revisions to the Final APP
¦ Respiratory protection was not previously identified;
¦ TCE was previously identified in Table A-8, table has been revised to identify PCE as the known
contaminant of concern;
¦ provide AHA for vault installation and maintenance.
Documentation of Field Change 04: Revised Location for groundwater monitoring wells EM-MW02S and
EM-MW02D
¦ Revised location for groundwater monitoring wells EM-MW02S and EM-MW02D due to drillers
encountering a retaining wall footer and/or related construction debris at the original proposed
location of those monitoring wells.
Documentation of Field Change 05: Additional AHA Submittal associated with Asbestos Abatement and
Building Demolition Activities
¦ AFIAs submitted for Cranes/Boom Lifts and hoisting, roofing and roofing safety checklist, construction
of a negative pressure enclosure, satellite laboratory construction, asbestos abatement, air sampling
for asbestos, demobilize/decontaminate equipment, and heavy equipment demolition/abatement.
Documentation of Field Change 06: Revised Location for groundwater monitoring wells EM-MW01S and
EM-MW01D
¦ Revised location for groundwater monitoring wells EM-MW01S and EM-MW01D due to proximity of
adjacent thermal system components (electrodes) and a required minimum distance by associated
piping in order to prevent electrical current interference.
Documentation of Field Change 07: Groundwater Sampling Variance - Use of extraction wells in lieu of
monitoring wells for third groundwater sampling event
¦ Ayuda will use extraction well groundwater data from the 12/10/18 sampling event as one of the four
required groundwater monitoring events per project requirements in the RAWP, based on discussions
with EPA Project Manager.
Ayuda
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Documentation of Field Change 08: Revised Specification for Site Restoration - Road Replacement
¦ Using crushed concrete in lieu of crusher-run aggregate for sub-base, and 95% compaction of
subgrade instead of 90%;
¦ saw cutting of Eddy Street will occur approximately 12 inches from the curb due to the fragile nature
of the existing curb and to prevent further damage;
¦ opening Eddy Street at 3,600 psi compression test, rather than required 4,000 psi as originally stated
in the PWS and RAWP. This modification was approved by the City of Grand Island.
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7.0 SITE RESTORATION
All roads affected by site activities, including Eddy Street and both frontage roads, were replaced to the
nearest full panel as detailed in the PWS and RAWP. Eddy Street and the frontage roads were repaired as
follows:
Eddy Street - Ten inches of limestone in the form of three quarter nominal White Rock (47B) at 4,000
pounds per square inch (psi), 6-inch layer of 1.5-inch crushed concrete (concrete that has been broken in
a mechanical crusher and has not been subjected to any subsequent screening process), compacted to
95%; original earth compacted to 95%. New pavement was dowelled into existing pavement. Compression
testing of the concrete was performed by Mid-State Engineering & Testing Inc., via American Society of
Testing Materials (ASTM) C31 (ASTM, 2012) and ASTM C39 (ASTM, 2017). Test results are in Appendix D9.
Frontage Roads - Eight inches of 47B at 4,000 psi, six-inch layer of 1.5 inched crushed concrete,
compacted to 95%; original earth compacted to 95%. New pavement was dowelled into existing
pavement. Compression testing of the concrete was performed by Mid-State Engineering & Testing Inc.,
via ASTM C31 (ASTM, 2012) and ASTM C39 (ASTM, 2017). Test results are in Appendix D9. Concurrent
with Frontage Road restoration, the concrete vaults that housed the previously abandoned SVE and GET
wells were removed and paved over.
Pavement and Sidewalks - Pavement and sidewalks with curb and gutter were repaired to a final
condition that is similar or equal to that which existed prior to operations. For this project a 4-inch thick
pavement and sidewalk were assumed. Pavement and sidewalks met City of Grand Island requirements
for commercial areas.
Buildings - As required and as agreed to by the owner, Ayuda has made repairs to the buildings.
ISTR System Abandonment - Abandonment of the MPE wells and temperature wells associated with the
ISTR System was completed in accordance with NAC Title 178 Chapter 12. Section 12-012.08A, 12-
012.08D, and 12.012.07C, Option 3, were followed when abandoning wells. For all wells that intersected
or were below the water table, the total volume of the well casing was calculated and the volume of the
annular space surrounding the screen interval (assumed a 30% porosity) was used to determine the
volume of grout needed for abandonment. All wells were pressure grouted to achieve the total volume.
Floses and cables attached to electrodes were cut below ground surface and were abandoned in place.
Ayuda also abandoned the temporary boreholes used for soil confirmation sampling.
Equipment Demobilization - Demobilization of the thermal remediation equipment took place after final
shutdown of the system in April 2019. Wellheads were removed, and piping and cables recovered.
Electrode wells, extraction wells, and sensor drop tubes were abandoned in accordance with Nebraska
Administrative Code, Title 178, Section 12-012.07C.
Ayuda
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8.0 HEALTH AND SAFETY
The Cleburn Street Well Superfund Site Project was completed in accordance with the approved Accident
Prevention Plan (APP)/Site Safety and Health Plan (SSHP) (Ayuda 2017b). The approved APP/SSHP
described the work to be conducted, established personal protection standards, safety and health
practices and procedures, contingency and emergency response procedures, and assigned responsibilities
for implementation.
Throughout the Project, Ayuda was committed to providing a safe and healthful work place, free of
recognized hazards, and to conducting its operations in accordance with applicable Federal, State, and
local environmental, safety and health standards, regulations, and laws including the USEPA, U. S. Army
Corps of Engineers (USACE) Engineering Manual (EM) 385-1-1, Occupational Safety and Health
Administration (OSHA), Nebraska Department of Transportation (NDOT), and Nebraska Department of
Environmental Quality. Ayuda employees and subcontractors conducted their work activities in a
responsible and safe manner that reflected the commitment to their personal protection, and the safety
of our client, the general public, and the environment. The Cleburn Street Well Superfund Project was
completed without incident, with no recordable injuries and no lost time.
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9.0 LESSONS LEARNED
1. Ayuda Companies completed the In-Situ Thermal Remediation project within the schedule
timeframe of 2 years. Treatment duration was also completed within the scheduled 6-month
period. The biggest challenge was the current infrastructure that limited access to drilling
locations and made equipment placement challenging. A thorough evaluation of existing site
infrastructure is critical to project performance and budget. Complicated site conditions should
be evaluated in detail to provide accurate costs estimates.
2. Equipment and piping placement during system construction should be designed to
accommodate confirmation sampling locations. These sample results were required to meet
project objectives and required partial system removal to gain access. If possible, the system
layout should be designed to accommodate access.
3. Based on discussions during ISTR system installation, it was identified that the temperature
sensor wells had the same construction as the monitoring well within the TTZ. In the event that
additional monitoring points were necessary for groundwater sampling post-remediation, it is
possible to convert the temperature sensor points to monitoring wells. This could be
advantageous and cost effective if the design of the ISTR system accounts for turning the
temperature sensor wells into monitoring wells.
4. The addition of including a "winterization" cost to the PWS would be advantageous to both the
client and subcontractor. For a subcontractor bidding a Low Price Technically Acceptable
project, it would help to mitigate the potential risk of excluding the cost of winterization in order
to maintain a competitive bid. It would also help to identify the cost of winterization for the
project up front. For the client, it would ensure that costs are evaluated on a more even basis.
5. For future projects, temperature monitoring wells could be used as future monitoring
well locations.
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10.0 REFERENCES
American Society for Testing and Materials (ASTM) 2012. Standard Practice for Making and Curing
Concrete Test Specimens in the Field.
ASTM 2017. Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.
Ayuda 2017a. Draft Uniform Federal Policy - Quality Assurance Project Plan. October.
Ayuda 2017b. Draft Accident Prevention Plan. October.
Ayuda 2018. Final Contractor Quality Control Plan, In-Situ Thermal Remediation Cleburn Street Well
Superfund Site Operable Unit 2 (OU-2), Grand Island, Nebraska. January.
HGL. 2011. Final Focused Remedial Investigation Report, Cleburn Street Well Site Operable Unit 2, Grand
Island, Nebraska. April.
HydroGeoLogic, Inc. 2015. July 2015 Groundwater Monitoring Report, Cleburn Street Well Site, Grand
Island, Nebraska. July.
United States Environmental Protection Agency (USEPA) Region 7, Kansas City, Kansas. April 1996.
Record of Decision Cleburn Street Well Superfund Site, Grand Island, Nebraska.
United States Environmental Protection Agency (EPA) Region 7. 2009. Well Installation and Testing and
Evaluation of Silt Layer, Cleburn Street Well Superfund Site Operable Units 1 and 2, Grand Island,
USEPA Region 7, Kansas City, Kansas dated September 2012. Amendment to the Record of Decision.
Cleburn Street Well Superfund Site Operable Units 1 through 4, Grand Island, Nebraska.
USEPA 2017. Cleburn Street Well Superfund Site Operable Unit 2 Performance Work Statement for In-Situ
Thermal Remediation. July 14.
Nebraska.
Final Remedial Action Completion Report, Cleburn Street, OU-2
August 2019
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FINAL
2019-2020 Annual Monitoring Report
Confirmatory Sampling
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2)
Grand Island, Nebraska
Contract No. 68HE0719C0004
Prepared for:
Region 7
U.S. Environmental Protection Agency
11201 Renner Blvd.
Lenexa, KS 66219
v
Prepared by:
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management services
51 West 4th Avenue
Denver, Colorado 80223
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Table of Contents
1.0 INTRODUCTION 1
1.1 Background 1
1.2 Objectives 2
1.3 Report Organization 3
2.0 SITE DESCRIPTION 5
2.1 Physical Site Characteristics 5
2.1.1 Site Geology and Hydrogeology 5
2.1.2 Site Hydrology 5
3.0 FIELD ACTIVITIES 7
3.1 Soil Boring Advancement 7
3.1.1 Boring Advancement 7
3.1.2 Decontamination Procedures 7
3.2 Monitoring Well Installation and Development 8
3.2.1 Installation 8
3.2.2 Well Development 8
3.2.3 Well Gauging 8
3.2.4 Groundwater Sampling 8
3.2.5 Decontamination Procedures 9
3.3 Soil Vapor, Indoor Air and Outdoor Air 9
3.4 Survey Coordinates 9
3.5 Data Validation and Usability 9
3.5.1 Relative Percent Difference 9
3.6 Investigation-Derived Waste 10
3.6.1 Waste Soil 10
3.6.2 Wastewater 10
3.6.3 Non-Soil Solid Waste 10
4.0 FINDINGS 11
4.1 Groundwater Flow 11
4.1.1 Shallow Zone Groundwater Flow 11
4.1.2 Intermediate Zone Groundwater Flow 11
4.1.3 Deep Zone Groundwater Flow 11
4.2 Groundwater Analytical Results 11
4.2.1 Round 1 Sampling 11
4.2.2 Round 2 Sampling 12
4.2.3 Round 3 Sampling 13
4.2.4 Round 4 Sampling 13
4.3 Sub-Slab Vapor Analytical Results 13
4.3.1 Round 1 Sampling 14
4.3.2 Round 2 Sampling 14
4.3.3 Round 3 Sampling 14
4.3.4 Round 4 Sampling 14
4.4 Indoor Air and Outdoor Air Analytical Results 15
4.4.1 Round 1 Sampling 15
4.4.2 Round 2 Sampling 15
4.4.3 Round 3 Sampling 15
4.4.4 Round 4 Sampling 16
5.0 SUMMARY 17
5.1 Groundwater Sampling Results 17
5.2 Air Sampling Results 17
6.0 REFERENCES 19
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Figures
Figure 1-1 Site Location Map
Figure 1-2 Monitoring Well Locations
Figure 1-3 Sub-Slab Vapor, Indoor Air, and Outdoor Air Sampling Locations
Figure 4-1 Shallow Zone Groundwater Contours
Figure 4-2 Intermediate Zone Groundwater Contours
Figure 4-3 Deep Zone Groundwater Contours
Figure 4-4 Shallow Zone PCE Concentrations in Groundwater
Figure 4-5 Intermediate Zone PCE Concentrations in Groundwater
Figure 4-6 Deep Zone PCE Concentrations in Groundwater
Figure 4-7 Sub-Slab Vapor, Indoor Air, and Outdoor Air VOC Concentrations
Tables
Table 1-1 Screening Levels
Table 3-1 Soil Boring and Monitoring Well Completion Details
Table 3-2 Groundwater Elevations
Table 3-3 Field Groundwater Quality Parameters
Table 3-4 Summary of Analytical Results in Groundwater
Table 3-5 Summary of Analytical Results in Air
Table 3-6 Relative Percent Differences
Appendices
Appendix A Tailgate Safety Meeting Forms
Appendix B Surveyor Report
Appendix C Field Documentation
C-l gINT HTRW Drilling Logs
C-2 Monitoring Well Construction Details
C-3 Well Development Data Sheets
C-4 Groundwater Level Measurement Forms
C-5 Groundwater Sampling Logs
Appendix D Photographic Log
Appendix E Analytical Results
Appendix F Investigation Derived Waste Disposal
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List of Acronyms
Hg/kg Micrograms per Kilogram
Hg/L Micrograms per Liter
Hg/m3 Micrograms per Cubic Meter
% Percent
°C Degrees Celsius
amsl Above Mean Sea Level
Auxilio Auxilio Management Services
Ayuda Ayuda Companies
bgs Below Ground Surface
Cleburn Cleburn Street Well Superfund Site Operable Unit 2
cm/s Centimeters per Second
COC Contaminant of Concern
Dl Deionized
ET-DSPTM Electro-Thermal Dynamic Stripping Process
FB Field Blank
ft Feet/Foot
ft/day Foot per Day
GAC Granular Activated Carbon
GET Groundwater Extraction and Treatment
HDPE High Density Polyethylene
HGL HydroGeoLogic, Inc.
HHRA Human Health Risk Assessment
HQ Hazard Quotient
HSA Hollow Stem Auger
HTRW Hazardous, Toxic, and Radioactive Waste
IBC Intermediate Bulk Container
ID Identification
IDW Investigation-Derived Waste
ISCO In Situ Chemical Oxidation
ISTR In Situ Thermal Remediation
J Reported concentration is an estimated value
MCL Maximum Contaminant Level
NDEQ Nebraska Department of Environmental Quality
NDHHS Nebraska Department of Health and Human Services
No. Number
NTU Nephelometric Turbidity Units
OHM One Hour Martinizing
OU-2 Operable Unit 2
PCE Tetrachloroethylene
Peterson Peterson Drilling, Inc.
pH Potential of Hydrogen
PLS Professional Land Surveyor
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UFP-QAPP
Final Programmatic Uniform Federal Policy-Quality Assurance Project
Confirmatory Sampling Cleburn Street Well Superfund Site Operable Unit
Grand Island, Nebraska
PWS
Performance Work Statement
RI/FS
Remedial Investigation / Feasibility Study
ROD
Record of Decision
RPD
Relative Percent Difference
RSL
Regional Screening Level
SOP
Standard Operating Procedure
SSDS
Sub-Slab Depressurization System
SVE
Soil Vapor Extraction
TCE
Trichloroethylene
TCLP
Toxicity Characteristic Leaching Procedure
TR
Target Cancer Risk
TTZ
Thermal Treatment Zone
U
Analyte was not detected above the reported value
U.S.
United States
USEPA
United States Environmental Protection Agency
VC
Vinyl Chloride
VOC
Volatile Organic Compound
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1.0 INTRODUCTION
Auxilio Management Services (Auxilio), under contract to the United States (U.S.) Environmental
Protection Agency (USEPA) Region 7, Contract Number (No.) 68HE0719C0004, has conducted
Confirmatory Sampling at the Cleburn Street Well Superfund Site Operable Unit 2 (OU-2) (Cleburn) in
Grand Island, Nebraska (Figure 1-1).
The purpose of the confirmatory sampling is to monitor post-remediation concentrations of the volatile
organic compounds (VOCs) tetrachloroethene (PCE) and trichloroethene (TCE) in air and groundwater.
Confirmatory Sampling will be conducted on a quarterly basis for two years, or eight sampling events. In
the scope of this project Auxilio installed five new monitoring wells and six sub-slab vapor ports. Sampling
efforts consisted of sampling groundwater at 21 new and existing monitoring wells, six sub-slab vapor
intrusion locations, five indoor air locations, and one outdoor ambient air sampling location.
The confirmatory sampling efforts were conducted in accordance with the performance work statement
(PWS) and Contract 68HE0719C0004 requirements (USEPA, 2019), which defines the scope of activities
necessary to achieve the required performance objective of the Confirmatory Sampling. Planning
documents included the "Final Programmatic Uniform Federal Policy-Quality Assurance Project Plan for
Confirmatory Sampling Cleburn Street Well Superfund Site Operable Unit 2 (OU-2) Grand Island,
Nebraska," (UFP-QAPP) (Auxilio, 2019). The work completed under this contract complies with USEPA
Region 7 Standard Operating Procedures (SOPs) and with all federal, state, local laws, ordinances, rules,
and regulations related to performance of the work under this contract.
1.1 Background
The Cleburn Street Well Superfund Site (Figure 1-1) is in an urban setting consisting of a mix of
single-family residential units, light manufacturing and retail shops within Grand Island, Hall County,
Nebraska. The Site is located in central Nebraska, approximately two miles north of the Wood River and
approximately seven miles northeast of the Platte River in the Great Plains physiographic province in the
middle of the Platte River Basin.
PCE contamination in subsurface soil and groundwater was identified in the late 1980s at various locations
around downtown Grand Island, which is collectively known as the Cleburn Street Well Site. In July 2015,
PCE had been detected in groundwater, at concentrations above 50,000 micrograms per liter (ng/L) within
the source area. The PCE source area is the former One Hour Martinizing (OHM) dry cleaning facility
located on the southwest corner of 4th Street and Eddy Street (Figure 1-2).
The Site was formerly separated into five OUs; however, because of the four distinct source areas and
varying degrees of contamination, the USEPA subdivided the Site into the following four OUs: OU-1
includes subsurface soil contamination at the former OHM dry-cleaning facility; OU-2 includes
groundwater contamination under the OHM facility; OU-3 addresses groundwater contamination
emanating from Liberty Cleaners, located approximately 2,000 feet (ft) north-northwest of the former
OHM facility; and OU-4 includes groundwater contamination emanating from Ideal Cleaners, located
approximately 2,000 ft southeast of the former OHM facility, and soil and groundwater associated with
former OU-5, the Nebraska Solvent Company, located approximately 1,000 ft southwest of the former
OHM facility.
Pursuant to a site-specific Superfund State Contract, the Nebraska Department of Environmental Quality
(NDEQ) was responsible for operation and maintenance of OU-1, OU-3, and OU-4; however, in February
2007, USEPA notified the State that its obligations to operate the OU-1 remedy were complete and that
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any further work at OU-1 would be conducted by USEPA as part of the OU-2 groundwater
restoration remedy.
A remediation system was installed at OU-1 and OU-2 in 1998 and was comprised of a groundwater
extraction and treatment (GET) system and a soil vapor extraction (SVE) system. The OU-2 GET system
consists of three groundwater extraction wells and a tray air stripper with a chemical cleaning system. The
three groundwater extraction wells and four of the vapor extraction wells are located in the street
adjacent to the former OHM dry cleaning facility, and one vapor extraction well, the remediation
equipment and controls are housed in a pre-engineered building installed during construction. The GET
system has been inoperative since December 2009 when a pilot study for in situ chemical oxidation (ISCO)
treatment of groundwater in the source area was initiated. The OU-1 SVE system was operated
continuously from July 2011 through February 2012, to evaluate the efficiency of the system in removing
VOCs from the subsurface.
The shallow soil beneath the facility was addressed by the OU-1 SVE system and a removal action
conducted in 2010 when approximately 24 cubic yards of highly contaminated soil were excavated.
The GET and SVE remedial action for OU-2 was completed February 8, 2010, although groundwater
continues to be monitored periodically, with the most recent monitoring event being conducted in April
2019. While the existing remedy was effective in containing the groundwater contaminant plume, it did
not address the source area to a substantial degree and was not adequate to meet remedial action
objectives within a reasonable timeframe. To address contamination in the source area, a pilot study was
initiated in December 2009 to conduct ISCO injections using permanganate. Performance sampling events
conducted after the last permanganate injection in March 2010 through May 2011 indicated that
contaminant levels in monitoring well samples in the source area had decreased from pre-injection levels.
However, analytical results from subsequent sampling events indicated that concentrations of PCE, the
primary contaminant of concern (COC), had rebounded to pre-ISCO injection levels.
A focused remedial investigation / feasibility study (RI/FS) was conducted between 2006 and 2011 to
determine a better approach to address the remaining contamination at the former OHM dry cleaning
facility. Investigations conducted during the Rl included a source area soil investigation, hydrogeologic
investigation, an ISCO treatability study, a vapor intrusion evaluation, and multiple rounds of groundwater
monitoring. In September 2012, USEPA signed a record of decision (ROD) Amendment for OU-1 through
OU-4 that selected in situ thermal remediation (ISTR) for the remaining OU-2 source materials and in situ
chemical or enhanced biological remediation of the dissolved groundwater contaminant plume
emanating from the OU-2 source.
In 2018 the SVE wells were abandoned and an ISTR system using Electro-Thermal Dynamic Stripping
Process (ET-DSPTM) was installed. The ISTR system ran from June 27, 2018 to December 9, 2018, when
contaminant mass removal rates had significantly reduced. Results from the soil confirmation sampling,
completed in December 2018, showed all 15 sampled locations were less than the 890 ng/L threshold.
Sample results from the final groundwater monitoring event, conducted in April 2019, showed a
significant decrease in PCE concentrations
1.2 Objectives
The overall project objective was to perform groundwater sampling at OU-2 to evaluate post-remediation
concentrations of VOCs both within and outside the thermal treatment zone (USEPA, 2019). Sampling also
included sub-slab soil vapor, indoor air, and outdoor air to evaluate potential vapor intrusion issues into
nearby businesses.
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In November 2019, Auxilio installed five new groundwater monitoring wells in two clusters. Three
clustered wells were installed near the former location of the Cleburn Street municipal well and are
identified as MW-2019-1A (screened from 25-35 ft below ground surface (bgs)), MW-2019-1B (screened
from 40-50 ft bgs), and MW-2019-1C (screened from 77-87 ft bgs). Two clustered wells were installed at
the end of North Elm Street, just south of the railroad tracks, and were identified as MW-2019-2B
(screened from 40-50 ft bgs), and MW-2019-2C (screened from 77-87 ft bgs). The locations of the newly
installed groundwater monitoring wells are shown on Figure 1-2. Following installation, and as discussed
in Section 3.2.2, below, the monitoring wells were developed prior to sampling.
Auxilio conducted quarterly groundwater sampling at 21 monitoring well locations (16 existing wells plus
the five new wells that were installed in November 2019). Two additional wells (MW-104AA and
MW-104BB) were sampled during the first event; however, since no COCs were present above the
maximum contaminant level (MCL), these wells were not sampled during subsequent sampling events.
The 16 existing wells are identified as EM-MW01S, EM-MW01D, 2A, 2B, EM-MW03S, EM-MW03D,
EM-MW04S, EM-MW04D, MW-8A, MW-8B, MW-11A, MW-11B, MW-13A, MW-105BB, MW-107BB, and
MW-108BB. Monitoring wells 2A and 2B were abandoned and replaced by EM-MW01S and EM-MW01D.
The locations of all existing and newly installed monitoring wells are illustrated on Figure 1-2.
In addition to groundwater monitoring, Auxilio installed six sub-slab vapor pins, one in each of the
following locations: USEPA Treatment Building, the Former Church, Miller Tire, Dent Xpress, Clark
Services, and the Blessed Sacrament Thrift Store. Sub-slab soil vapor samples were collected, via summa
canisters, for a 24-hour period from all six sub-slab ports on a quarterly basis.
Five indoor air samples were also collected concurrently during each quarterly event. The samples were
collected from the businesses listed above, excluding Clark Services. Clark Services is an automobile repair
facility and its use of solvents made sampling indoor air sampling impractical. One outdoor/ambient air
sample was also collected west-southwest of the USEPA Treatment Building, which is located above the
source area. The indoor and outdoor air samples were also collected via summa canister for 24 hours, on
a quarterly schedule, concurrent with the groundwater sampling efforts.
The MCL for both PCE and TCE in groundwater is 5.0 ng/L and the MCL for vinyl chloride (VC) in
groundwater is 2.0 ng/L. The indoor and outdoor Residential Regional Screening Levels (RSLs) for PCE,
TCE, and VC in air are 11 micrograms per cubic meter (ng/m3), 0.48 ng/m3, and 0.17 ng/m3, respectively.
The indoor and outdoor Industrial RSLs for PCE, TCE, and VC in air are 47 ng/m3, 3.0 ng/m3, and 2.8 ng/m3,
respectively. The screening levels are shown in Table 1-1.
1.3 Report Organization
This Annual Report is organized in the following manner:
¦ Section 1.0 (Introduction) summarizes the installation background and project objectives.
¦ Section 2.0 (Site Description) describes the physical Site characteristics, including Site geology and
hydrogeology, Site hydrology, and the nature and extent of contamination.
¦ Section 3.0 (Field Activities) describes the field activities related to the investigation and sample
collection at the Site for all media, including soil, groundwater, soil vapor, and indoor and outdoor air.
¦ Section 4.0 (Findings) discusses the quarterly groundwater flow directions and analytical results for
sampling of groundwater, soil vapor, and indoor and outdoor air.
¦ Section 5.0 (Summary and Conclusions) provides a summary of quarterly findings and conclusions.
¦ Section 6.0 (References) includes details of all cited references.
¦ Figures and Tables are included at the end of the document.
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¦ Appendices are provided after the Figures and Tables.
- Appendix A contains the Daily Tailgate Safety Meeting Forms.
- Appendix B contains the Surveyor Report.
- Appendix C contains the Field Documentation.
- Appendix D contains the Photographic Log.
- Appendix E contains the Analytical Results.
- Appendix F contains the Bill of Lading and investigation-derived waste (IDW) profile.
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2.0 sni W - RIPTION
2.1 Physical Site Characteristics
The Cleburn Well Superfund Site is located at the 803 West 4th Street facility in Hall County, Nebraska. Site
elevations were surveyed in October 2017 and range from approximately 1,860 ft above mean sea level
(amsl) to 1,868 ft amsl. The facility is approximately one acre in size and is comprised of a former church
and light industrial operations. Land use in the vicinity of the facility also includes single-family residential
units and retail shops. Land in Hall County is used primarily for ranching and farming, with about 70
percent (%) of the land used for agriculture, and 19% used for pasture or rangeland. Approximately 1% of
the land is forested. The remaining area consists of farmsteads, towns, or water (USEPA, 2012). The 2010
Census indicates that Grand Island has a population of 48,520 and an estimated 2016 population of 51,517
(U.S. Census Bureau, 2016).
2.1.1 Site Geology and Hydrogeology
Hall County lies adjacent to the north-south axis of the Salina Basin, which extends from central Nebraska
into north-central Kansas. Typically, the Hall County area is underlain by approximately 30 to 430 ft of
unconsolidated Pleistocene-age deposits lying unconformably on the Pierre Shale, or the Niobrara
Formation where the Pierre Shale is absent. The unconsolidated deposits are stream-deposited sands and
gravels containing thick, regionally discontinuous layers of clay and silt. Gravel beds occur within this unit
and can be as thick as 10 ft. The unconsolidated deposits (in descending order from the surface) are: the
Grand Island Formation, consisting of alluvial sands and gravels (approximately 60 to 70 ft in thickness);
the Fullerton Formation of alluvial silty clay with low permeability (approximately 5 to 15 ft in thickness);
and the Holdrege Formation, which is comprised of alluvial sands and gravels (up to 200 ft in thickness)
(HydroGeoLogic, Inc. (HGL), 2011).
The lithology at OU-2 consists of a silty sand unit of variable thickness approximately 28 ft to 39 ft bgs.
Above and below the silty sand unit are unconsolidated deposits of silty sands, sands, and gravelly sands
with occasional very thin to thin, clayey sand layers and sandy clay layers. The Fullerton Formation, which
consists of very stiff, slightly moist, greenish-gray clay with low to medium plasticity, is found at
approximately 90 ft bgs.
2.1.2 Site Hydrology
Regionally, the State of Nebraska is drained by the Missouri River and Platte River systems. The Missouri
River has the Platte River as its major Nebraska tributary. The City of Grand Island is located in the central
portion of the Platte River Basin, approximately seven miles to the north-northwest of the Platte River,
which flows from the southwest to the northeast. Site surface runoff is toward the east and southeast and
is controlled by such urban features as gutters and storm sewers. Runoff is discharged to the Wood River,
located two miles south of the Site, which flows to the northeast and eventually into the main channel of
the Platte River, approximately ten miles northeast of the site (HGL, 2011).
The principal source of groundwater underlying the region occurs as an unconfined watertable within the
alluvial sands and gravels of the Grand Island Formation, with an average depth to water being
approximately 20 ft bgs (HGL, 2011). Regionally, the watertable aquifer extends to the top of the Fullerton
Formation, having a total thickness of about 70 ft.
Hydraulic conductivities of the lithologic units in the ISTR area range from an average of 2.33 x 10"4
centimeters per second (cm/s) to 2.23 x 10"2 cm/s based on the 2014 sieve analysis results and historic
hydraulic testing. Groundwater seepage velocities were calculated for the lithologic units in the ISTR area
using data collected during the 2014 Data Summary Memorandum (HGI, 2014), as well as historical data,
and are generally less than 1 ft per day (ft/day) due to the low-relief water table. However, it should be
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noted that the ISTR area extends approximate three ft below where hydraulic conductivity data is
available, at which point materials tend to become coarser and the seepage velocity may be greater than
1 ft/day. Pumping tests conducted in extraction well EW-1, which is screened through the silty sand layer
to a depth of 57 ft bgs reportedly resulted in a hydraulic conductivity of 345 ft/day and a calculated
seepage velocity of 3.5 ft/day (USEPA, 2009).
The State of Nebraska has designated the aquifer impacted by the Cleburn Street Well Superfund Site as
a Class GA Groundwater Supply. Class GA is a groundwater supply which is currently being used as public
drinking water supply or is proposed to be used as a public drinking water supply. The groundwater
contamination caused the State of Nebraska to designate the Site as a Remedial Action Class 1, requiring
the "most extensive remedial action measures" to clean up the groundwater to drinking water quality
suitable for all beneficial uses.
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3.0 FIELD ACTIVITIES
Auxilio conducted field activities at Cleburn between 04 November 2019 and 27 August 2020. Field
activities included advancing soil borings; installing, developing, and sampling groundwater monitoring
wells; installing sub-slab vapor sampling ports; collecting sub-slab air samples; collecting indoor and
outdoor air samples; location survey of newly installed monitoring well locations; and disposal of
investigation-derived waste (IDW). A field preparatory/quality control meeting was conducted by Auxilio
project management, safety, field, and chemistry personnel prior to initiating work at Cleburn. The
meeting covered anticipated hazards, types and proper use of equipment needed for the field activities,
sampling procedures, and review of relevant SOPs to be used.
Each field day began with a tailgate safety meeting to review the anticipated tasks and associated hazards.
Tailgate safety forms are presented in Appendix A.
Laboratory-provided deionized (Dl) water was supplied by the USEPA Region 7 laboratory and was used
for decontamination of groundwater sampling equipment during the first field event. A field blank (FB)
sample (sample identification (ID) FB-01) was taken of this laboratory-provided water and there were no
detections of PCE, TCE, or VC. Drilling equipment was decontaminated with potable water prior to
initiating drilling onsite and when additional auger flights were needed.
Immediately after each sampling event, the analytical samples were submitted via overnight courier to
the USEPA Region 7 Laboratory under proper chain of custody procedures. Analytical procedures were
performed in accordance with the UFP-QAPP (Auxilio, 2019).
The investigative and quality control samples were analyzed for VOCs by USEPA Method SW846-8260C in
aqueous matrix and by TO-15 in air. Only PCE, TCE, and VC were reported by the laboratory and are the
focus of this report. The laboratory analytical reports can be found in Appendix E.
3.1 Soil Boring Advancement
3.1.1 Boring Advancement
Soil boring locations were defined in the UFP-QAPP (Auxilio, 2019) and selected by the USEPA based upon
presumed contaminant plume flow and Site reconnaissance. Slight modifications to the locations were
made in the field based on utility conflicts and with approval from USEPA personnel. Figure 1-2 presents
the locations of each of the five new soil borings. The borings were advanced and installed in accordance
with Auxilio SOPs.
Five soil borings were installed in two clusters by Peterson Drilling, Inc. (Peterson) of Kearney, Nebraska,
using hollow stem auger (HSA) drilling technique with 4.25-inch inside diameter auger flights, in
accordance with 178 NAC 10. One cluster of three wells was installed near the former location of the
Cleburn Street municipal well, located northwest of the intersection of West North Front Street and North
Cleburn Street. They were identified as MW-2019-1A (screened from 25-35 ft bgs), MW-2019-1B
(screened from 40-50 ft bgs), and MW-2019-1C (screened from 77-87 ft bgs). The second cluster of two
wells were installed at the end of North Elm Street, immediately south of the railroad tracks. They were
identified as MW-2019-2B (screened from 40-50 ft bgs), and MW-2019-2C (screened from 77-87 ft bgs).
Soil cuttings were visually logged by a licensed Professional Geologist. The Hazardous, Toxic, and
Radioactive Waste (HTRW) soil drilling logs are presented in Appendix C-l.
In accordance with the IDW management plan included in the UFP-QAPP (Auxilio, 2019), all soil cuttings
were containerized in plastic-lined 20-yard roll-off dumpsters, pending IDW disposition.
3.1.2 Decontamination Procedures
HSA equipment decontamination occurred prior to commencing drilling activities and between each
boring in order to prevent cross-contamination. Dedicated, clean lead augers were utilized at each
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borehole. After the final depth of each borehole was achieved, soil cuttings were removed from the augers
during retrieval and were containerized in plastic-lined dumpsters for offsite disposal.
3.2 Monitoring Well Installation and Development
3.2.1 Installation
Permanent groundwater monitoring wells were installed in the five soil borings that were advanced. The
monitoring wells were installed and developed in accordance with Auxilio SOPs.
Monitoring wells were constructed with 2-inch diameter, schedule 40 polyvinyl chloride with 10 ft of
factory slotted 0.010-inch screen, and solid risers with flush threads. The wells had silica filter pack sand
installed from the bottom of the screen to two ft above the top of the screen. A three to five ft thick
bentonite annular seal was then emplaced. The seal was hydrated for 30 minutes prior to grouting, and
high-solids bentonite grout was installed to the surface above the bentonite annular seal. All wells were
completed with flush-mount vaults installed within a 36-inch diameter concrete pad.
Soil boring and monitoring well completion details including survey data are presented in Table 3-1.
Monitoring well construction diagrams are presented in Appendix C-2.
3.2.2 Well Development
Monitoring well development occurred following installation, but no sooner than 48 hours following
grouting. Monitoring well installation and development was conducted in accordance with the general
requirements of the Nebraska Department of Health and Human Services (NDHHS), Title 178 (NDHHS,
2011) and Auxilio SOP No. 06.
Each monitoring well was initially manually surged and bailed using a clean, dedicated, disposable, 5-ft
polyethylene bailer by the drilling subcontractor. The wells were then pumped with a clean stainless-steel
reclaimer pump and dedicated high-density polyethylene (HDPE) tubing until water quality parameters
including temperature, pH, specific conductivity, and turbidity were stabilized, or until six hours of purging
had elapsed, whichever occurred first. An attempt was made at all wells to purge until the water reached
a turbidity less than 25 nephelometric turbidity units (NTUs); however all but MW-2019-2B, reached six
hours of pumping prior to achieving less than 25 NTUs.
The well development data sheets are presented in Appendix C-3.
3.2.3 Well Gauging
Groundwater levels were measured during each quarterly sampling event. During the first sampling event,
groundwater levels were collected on the final day of fieldwork after groundwater sampling so the levels
in the newly installed wells could be collected within 24 hours of the existing wells. Gauging was
conducted prior to groundwater sampling during each other quarterly event.
The groundwater flow direction has been calculated for each round of gauging and is discussed below in
Section 4.1. Table 3-2 summarizes the quarterly groundwater level data and elevations.
3.2.4 Groundwater Sampling
Groundwater sampling in the newly installed wells was conducted following the completion of well
development. Groundwater samples were collected in accordance with USEPA guidance (USEPA, 2010)
and Auxilio SOP No. 07 following low-flow sampling methodology using a peristaltic pump with new,
dedicated, HDPE tubing, which was installed during the first round of sampling. Well development data
sheets, groundwater level measurement forms, and groundwater sampling logs are included in
Appendices C-3, C-4, and C-5, respectively.
In accordance with Auxilio's sampling SOPs, groundwater quality parameters were monitored and
recorded during well purging. Groundwater samples were collected following the consecutive
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stabilization of field parameters in accordance with Auxilio's SOPs. All monitoring wells met stabilization
criteria during each sampling event.
The final stabilized parameters, total drawdown, purge rate, and purge volume for all sampled
groundwater wells are summarized in Table 3-3.
3.2.5 Decontamination Procedures
All non-disposable groundwater sampling equipment was decontaminated before and between use at
each monitoring well in order to reduce the potential for cross-contamination. The equipment was
decontaminated by either spraying or running a mixture of Liquinox and distilled water through the
equipment and then rinsing with distilled water. The water was containerized with the purge water
collected during sampling.
3.3 Soil Vapor, Indoor Air and Outdoor Air
One soil vapor pin was installed at each of the following six locations: USEPA Treatment Building, Former
Church, Miller Tire, Dent Xpress, Clark Services, and the Blessed Sacrament Thrift Store. In accordance
with USEPA SOPs, sub-slab soil vapor samples were collected via summa canister for a 24-hour period,
from each of the six sub-slab ports on a quarterly basis.
Five indoor air samples were also collected concurrently during each quarterly sampling event. The
samples were collected from the locations listed above, excluding Clark Services. Clark Services is an
automobile repair facility and its use of solvents made sampling indoor air sampling impractical. One
outdoor/ambient air sample was also collected west-southwest of the USEPA Treatment Building on the
roof of the former church's reception hall in order to prevent tampering. The indoor and outdoor air
samples were also collected via summa canister for 24 hours, on a quarterly schedule, concurrent with
the other sampling efforts. The locations of all air sampling can be seen on Figure 1-3.
3.4 Survey Coordinates
A State of Nebraska registered professional land surveyor (PLS) was subcontracted to establish the
coordinates, surface elevation, and top-of-casing elevation of each of the newly installed groundwater
monitoring wells. Northing and easting coordinates were recorded in U.S. survey feet using the U.S. State
Plane 1983 coordinate system, Nebraska Zone. Elevations were recorded on 19 November 2019 and were
referenced to the North American Vertical Datum 1988. Groundwater monitoring wells installed as part
of this effort were registered with the State of Nebraska. The surveyor report is included in Appendix B.
3.5 Data Validation and Usability
Third-party data validation was not required by the PWS thus was not conducted. Auxilio did perform
relative percent difference (RPD) calculations between parent and duplicate samples and are presented
in Section 3.5.1.
3.5.1 Relative Percent Difference
Field duplicate (FD) samples were collected and analyzed as specified in the QAPP. FD samples are
independent samples collected simultaneously or in immediate succession with the original investigative
samples such that they are expected to be equally representative of the medium at the time of sampling.
These samples provide precision information for the entire measurement system, including sample
collection, handling, shipping, storage, preparation, and analysis. The precision of FD pairs was assessed
by calculating the RPDs using the following equation:
RPD = | X - Y | / ((X + Y)/2) X 100%, where X = primary field investigative sample concentration and Y = FD
sample concentration.
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In cases where a target analyte was either not detected or detected below the Reporting Limit in either
sample, an RPD would not be valid, and therefore, was not calculated.
The results for the FD and associated investigative sample analyses were reviewed to assess the precision
of the analytical results based on the magnitude of the RPD values. The criteria of 30% was used to assess
the data with analyte concentrations greater than the Reporting Limit in both samples. Table 3-6 presents
the RPDs for analytes detected above the Reporting Limit in the investigative and FD sample pairs.
In groundwater, FDs were obtained from EM-MW02S, MW-2019-1B, and EM-MW01D. During Round 1
Sampling a FD was taken from EM-MW01S instead of EM-MW01D. RPD between parent and duplicate
samples for all rounds for PCE, TCE and VC ranged from 0.0% to 6.1%. No RPDs exceeded 30%.
In air, FDs were collected from the indoor air sample at EPA Treatment Building-IA, the sub-slab vapor
sample at EPATreatment Building-SV, and from the outdoor air sample at Outdoor-OA. RPDs for all rounds
for PCE, TCE and VC ranged from 0.0% to 33.3%. The RPD of the sub-slab vapor sample at EPATreatment
building-SV during the November 2019 sampling event (33.3%) was the only RPD to exceed 30% and is
not expected to affect data quality.
3.6 Investigation-Derived Waste
3.6.1 Waste Soil
The soil cuttings that were generated from advancement of soil borings were containerized in two
plastic-lined 20-yard roll-off dumpsters, as discussed in the UFP-QAPP (Auxilio, 2019). A representative
sample was collected from each of the roll-off dumpsters and submitted to EMAX Laboratories for analysis
of toxicity characteristic leaching procedure (TCLP) VOCs by USEPA Method 1311/8260B. Analytical
Results showed non-detect results for all analytes, thus the soil IDW was disposed of at Butler County
Landfill. The facility was confirmed to be in compliance with the USEPA Off-Site Rule. The waste profile,
Bill of Lading, and Certificate of Disposal are provided in Appendix F.
3.6.2 Wastewater
Wastewater generated during the monitoring well development, groundwater sampling, and
decontamination was containerized in a 275-gallon intermediate bulk container (IBC) tank. Once the tank
was near capacity, the water was pumped through a 55-gallon drum of granular activated carbon (GAC)
and conveyed into a second, clean 275-gallon IBC tank. A sample of the treated water was collected and
analyzed at the USEPA Region 7 laboratory for PCE, TCE, and VC via USEPA Method SW846-8260C.
Two total tanks volumes were collected, treated, and sampled this way during the base year contract. All
analytical results came back non-detect, thus the treated water was conveyed directly to a nearby sanitary
sewer drain in accordance with the UFP-QAPP (Auxilio, 2019).
3.6.3 Non-Soil Solid Waste
Construction waste such as paper, plastic, trash, and personal protective equipment was stored in plastic
garbage bags and disposed offsite as municipal waste.
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4.0 FI] QS
4.1 Groundwater Flow
Groundwater levels were measured in all 23 wells (18 existing and five newly installed) within a 24-hour
period. Wells were divided into three zones by depth and screened interval: Shallow, Intermediate, and
Deep. The Shallow Zone consists of nine monitoring wells: MW-8A, MW-11A, MW-13A, MW-104AA,
EM-MW01S, EM-MW02S, EM-MW03S, EM-MW04S, and MW-2019-1A. The Intermediate Zone consists of
10 wells: MW-104BB, MW-105BB, MW-107BB, MW-108BB, EM-MW01D, EM-MW02D, EM-MW03D,
EM-MW04D, MW-2019-1B, and MW-2019-2B. The Deep Zone consists of four wells: MW-8B, MW-11B,
MW-2019-1C, and MW-2019-2C. Groundwater levels for each round are provided in Table 3-2.
Groundwater level contour maps were developed for each zone for each round of sampling and are
included as Figure 4-1, Figure 4-2, and Figure 4-3.
Groundwater flow is generally consistent in each depth zone between each quarterly sampling round. The
Shallow and Intermediate groundwater zones have similar flow patterns where during Round 2, Round 3,
and Round 4. Round 1 exhibited an overall east to southeastward flow direction in the Shallow,
Intermediate, and Deep Zones.
4.1.1 Shallow Zone Groundwater Flow
As shown in Figure 4-1, groundwater in the Shallow Zone during Round 1 flowed in an eastward direction.
Groundwater flow direction during all sampling events was similar
4.1.2 Intermediate Zone Groundwater Flow
Figure 4-2 shows the groundwater flow elevations and direction in the Intermediate Zone, which appears
to have a similar flow pattern to the Shallow Zone. Groundwater flow direction during all sampling events
was similar.
4.1.3 Deep Zone Groundwater Flow
As shown in Figure 4-3, groundwater flow during Round 1 and Round 2, was toward the southeast and
east. Groundwater flow direction during all sampling events was similar
4.2 Groundwater Analytical Results
Four rounds of quarterly groundwater monitoring were conducted over the course of the period of
performance. Groundwater samples were submitted to the USEPA Region 7 Laboratory and analyzed for
the presence of COCs using USEPA Method 8260B. Groundwater sampling forms are located in Appendix
C-5. Isopleth maps depicting the PCE concentrations for each zone for each round of sampling are included
as Figure 4-4, Figure 4-5, and Figure 4-6.
4.2.1 Round 1 Sampling
During Round 1 sampling, a total of 23 groundwater samples were collected from 23 monitoring wells (18
existing and five newly installed) between 05 November 2019 and 09 November 2019. Due to the
requirement to ship all the groundwater samples together, a holiday weekend, and delays at the
laboratory, 15 samples were analyzed after their 14-day hold time. Samples MW-13A, MW-104AA,
MW-104BB, MW-8A, EM-MW03S, EM-MW04S, and EM-MW04D were 2 days over the 14-day hold time.
Samples MW-105BB, EM-MW03D, MW-8B, EM-MW02S, EM-MW02D, MW-107BB, MW-11A, and
MW-108BB were held one day over the 14-day hold time. Results for these samples have been reported
with J-codes for analytical detections and UJ-codes for non-detections, but since all samples were
preserved with hydrochloric acid, data are considered usable for the intended purpose.
Additionally, PCE was reported above the calibration range in samples MW-8A (83 ng/L), EM-MW03S
(110 ng/L), EM-MW04S (110 ng/L), and MW-2019-2B (310 ng/L) with a top of curve of 80 ng/L. Due to
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lost analytical run, there was insufficient time and sample volume to re-analyze higher dilutions. Values
have been reported with J-codes to indicate that they are estimates. Despite the deviations, data are
considered usable for the intended purpose.
During sampling, groundwater from monitoring wells EM-MW01S and EM-MW01D was found to have a
temperature that exceeded 30 degrees Celsius (°C) due to residual heat from the prior ISTR treatment. To
reduce the potential of the target chemicals volatilizing while sampling, the groundwater pumped from
these wells was conveyed through a decontaminated copper coil set in a cooler filled with water-ice, which
adequately decreased the temperature. The copper coil was decontaminated prior to and between use
at each well by pumping a distilled water and Liquinox solution, followed by a distilled water rinse through
the coil.
Groundwater analytical results for Round 1 are presented in Table 3-4. VC was not detected in any of the
samples. TCE was detected in one sample (MW-8A) at a concentration of 1.1 J ng/L. PCE was detected in
numerous samples in all groundwater zones ranging from 1.6 ng/L at intermediate monitoring well
EM-MW01D, to 310 J ng/L at intermediate monitoring well MW-2019-2B. PCE concentrations in 10 of the
23 wells exceeded the USEPA MCL of 5.0 ng/L ranging from 5.1 ng/L at deep monitoring well MW-2019-2C
to 310 J ng/L in intermediate monitoring well MW-2019-2B. In each groundwater zone, PCE appears to
increase in concentration with distance from the source at the former dry cleaners' location.
Comparing these results to the previous analytical results obtained after ISCO activities in April 2019, and
discussed in Section 2.1.4, concentrations of PCE decreased in EM-MW01S from 140 ng/L to 2.4 ng/L,
EM-MW03S from 140 ng/L to 110 ng/L, EM-MW03D from 110 ng/L to non-detect, EM-MW04S from
180 ng/Lto 110 ng/L, and EM-MW04Dfrom 250 ng/Lto 12 ng/L. However, PCE concentrations increased
in EM-MW02S from 3.8 ng/L to 74 ng/L and slightly in EM-MW02D from 5.6 ng/L to 8.4 ng/L. These
comparisons cannot be made at the other well locations as sample analytical data post remediation is not
available.
In accordance with the PWS (USEPA, 2019) and UFP-QAPP (Auxilio, 2019), monitoring wells MW-104AA
and MW-104BB were not sampled for the remainder of the sampling events because PCE, TCE, and VC
were present at concentrations less than their respective MCLs.
4.2.2 Round 2 Sampling
During Round 2 sampling, a total of 21 groundwater samples were collected from 21 wells between
04 February 2020 and 06 February 2020.
As in Round 1 sampling, groundwater from wells EM-MW01S and EM-MW01D was found to have a
temperature exceeding 30°C due to residual heat from the prior ISTR treatment. To decrease the potential
for the target chemicals to volatilize while sampling, the groundwater pumped from these wells was
conveyed through a decontaminated copper coil set in a cooler filled with water-ice, which adequately
decreased the temperature. The copper coil was decontaminated prior to and between use at each well
by pumping a distilled water and Liquinox solution, followed by a distilled water rinse through the coil.
Groundwater analytical results for Round 2 are presented in Table 3-4. VC was not detected in any of the
samples. TCE was detected in two samples (MW-8A and EM-MW04S) at concentrations of 2.5 ng/L and
3.2 ng/L, respectively. PCE was detected in 17 samples in all groundwater zones ranging from 1.0 ng/L to
300 ng/L. PCE concentrations in 11 of the 21 wells exceeded the USEPA MCL of 5.0 ng/L ranging from
6.2 ng/L in EM-MW03D to 300 ng/L in MW-8A. MW-2019-2B was the well with the greatest concentration
of PCE in Round 1, at 310 J ng/L. The concentration of PCE decreased to 120 ng/L during Round 2.
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Although many of the wells with concentrations above the MCL are the same for this Round as in the
previous sampling event, the ranks by concentration have changed, possibly indicating a migrating plume.
In MW-13A, which was considered the background monitoring well, the concentration of PCE increased
from 1.9 J ng/L to 220 ng/L. The cause of this increase is not known, and behavior will be evaluated
following additional groundwater sampling events. As observed during Round 1, PCE tends to increase
in concentration in each groundwater zone with distance from the source at the former dry
cleaners' location.
4.2.3 Round 3 Sampling
During Round 3 sampling, a total of 21 groundwater samples were collected from 21 monitoring wells
between 02 June 2020 and 04 June 2020.
During this sampling event, the temperature of purged groundwater from monitoring wells EM-MW01S
and EM-MW01D were less than 30°C. The decrease in groundwater temperature is a result of the cooling
subsurface after the decommissioning of the ISTR system. With the reduction in groundwater
temperature, purge water was not cooled prior to sampling, which was the case during Round 1 and
Round 2 sampling. The groundwater temperature will remain less than 30°C so no supplemental cooling
will be necessary for the duration of the project.
Groundwater analytical results for Round 3 are presented in Table 3-4. VC was not detected in any of the
samples. TCE was detected in one sample from MW-8A at a concentration of 5.4 ng/L, which exceeds the
MCL of 5.0 ng/L. The concentration of TCE has steadily increased during each of the three sampling events
and exceeds the MCL for the first time.
PCE was detected in each groundwater zone from 15 samples, ranging from 1.1 ng/L at EM-MW02D in
the Intermediate Zone to 1,000 ng/L at MW-13A in the Shallow Zone. PCE concentrations in 12 of the 21
wells exceeded the USEPA MCL of 5.0 ng/L ranging from 6.3 ng/L in intermediate monitoring well
EM-MW03D to 1,000 ng/L in MW-13A. The background monitoring well, MW-13A continued to exhibit an
increasing PCE concentration.
4.2.4 Round 4 Sampling
During Round 4 sampling, a total of 21 groundwater samples were collected from 21 monitoring wells
between 25 August 2020 and 27 August 2020.
Groundwater analytical results for Round 4 are presented in Table 3-4. VC was not detected in any of the
samples. TCE was detected in five samples at concentrations ranging from 2.1 ng/L at shallow monitoring
well EM-MW02S to 9.1 ng/L in shallow monitoring well MW-8A, which was the only exceedance of the
MCL for TCE of 5 ng/L. As was the case for Round 3 at this monitoring well, the concentration of TCE has
increased during each sampling event and continues to exceed the MCL.
PCE was detected in each groundwater zone from 16 samples, ranging from 1.3 ng/L at EM-MW02D in
the Intermediate Zone to 1,700 ng/L at EM-MW02S in the Shallow Zone. PCE concentrations in 11 of the
21 wells exceeded the USEPA MCL of 5.0 ng/L ranging from 5.2 ng/L in deep monitoring well MW-2019-1C
to 1,700 ng/L in EM-MW02S.
4.3 Sub-Slab Vapor Analytical Results
Sub-slab vapor samples were collected in concurrence with quarterly groundwater sampling. Each sample
was collected in 6-liter summa canister for a 24-hour period and submitted to the USEPA Region 7
Laboratory for analysis of VOCs by RLAB Method 3230.13F.
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4.3.1 Round 1 Sampling
Concentrations of PCE, TCE, and VC are presented in Table 3-5 and illustrated on Figure 4-7.
Concentrations of PCE from the six sub-slab vapor samples ranged from 3.5 ng/m3 at the Blessed
Sacrament Thrift Store to 140 ng/m3 at the USEPA Treatment Building.
PCE and TCE concentrations detected in samples at the USEPA Treatment Building of 140 ng/m3and 4.2
Hg/m3, respectively, are greater than the Residential RSLs of 11 ng/m3 and 0.5 ng/m3 and Industrial RSLs
of 47 ng/m3 and 3.0 ng/m3, respectively. PCE concentrations of 13 ng/m3 at Miller Tire, 16 ng/m3 at the
Former Church and 18 ng/m3 at Dent Xpress also exceed the Residential RSLs, but not the Industrial RSLs.
Except forthe USEPA Treatment Building, no other sub-slab vapor samples contained TCE concentrations
greater than either RSL. VC concentrations of 0.22 ng/m3 in the Former Church, 0.27 ng/m3 at Clark
Services, 0.26 ng/m3 at Dent Xpress, and 0.22 ng/m3 at the Blessed Sacrament Thrift Store were greater
than the Residential RSL for VC of 0.17 ng/m3, but below the Industrial RSL of 2.8 ng/m3.
At the time sampling was conducted, renovations in the Former Church reception hall and USEPA
Treatment Building included the removal of large portions of the concrete slab, exposing the soil beneath.
The sub-slab depressurization system (SSDS) that is installed in the building was also not operating at that
time. Soil vapor pins were installed away from these areas and are not thought to significantly affect
the results.
4.3.2 Round 2 Sampling
Round 2 sampling was not completed at all locations except the Dent Xpress location due to the inability
to contact the owner or access the inside of the building.
PCE concentrations detected in soil vapor samples collected during Round 2 ranged from 0.86 ng/m3 at
the Former Church to 63 ng/m3 at Miller Tire. TCE concentrations in these samples ranged from non-
detect to 0.63 ng/m3, and VC was not detected in any sample. The PCE concentration in the sample from
Miller Tire was the only result that exceeded the Industrial RSL of 47 ng/m3. The concentration of PCE and
TCE in the USEPA Treatment Building declined significantly in Round 2 from 8.4 ng/m3 to 140 ng/m3 and
0.31 ng/m3 to 4.2 ng/m3, respectively. This is likely due to the completion of the concrete slab and
reactivation of the SSDS that is installed in the building.
4.3.3 Round 3 Sampling
All six sub-slab vapor sample locations were accessible and sampled during Round 3. PCE concentrations
in soil vapor collected during Round 3 ranged from 5.3 ng/m3 at the Blessed Sacrament Thrift Store to
8,300 ng/m3 at Miller Tire. TCE concentrations in these samples ranged from non-detect at Clark Services
and the Blessed Sacrament Thrift Store, to 7.3 ng/m3 at the USEPA Treatment Building. VC was not
detected in any samples collected during this event.
Concentrations of PCE in sub-slab vapor samples exceeded the Residential RSL of 11.0 ng/m3 and Industrial
RSL of 47 ng/m3 at each location except at the Blessed Sacrament Thrift Store. Where detected, the
concentration of TCE exceeded the Residential RSL of 0.5 ng/m3at all sampling locations, and the Industrial
RSL of 3.0 ng/m3 at all but Dent Xpress. The concentrations of PCE and TCE in each location had increased
from previous Round 1 and Round 2 results.
4.3.4 Round 4 Sampling
All six sub-slab vapor sample locations were accessible and sampled during Round 4. PCE concentrations
in soil vapor collected during Round 4 ranged from 7.5 ng/m3 at the Blessed Sacrament Thrift Store to
10,000 ng/m3 at the USEPA Treatment Building. TCE concentrations in these samples ranged from
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0.17 ng/m3, to 46 ng/m3 at the USEPA Treatment Building. VC was not detected in any samples collected
during this event.
Concentrations of PCE in sub-slab vapor samples exceeded the Residential RSL of 11.0 ng/m3 and Industrial
RSL of 47 ng/m3 at each location except at the Blessed Sacrament Thrift Store. The concentration of TCE
exceeded the Residential RSL of 0.5 ng/m3 at all sampling locations except Clark Services and the Blessed
Sacrament Thrift Store. The Industrial RSL for TCE of 3.0 ng/m3 was also exceeded at all but the Former
Church, Clark Services, and the Blessed Sacrament Thrift Store. The concentrations of PCE continued to
increase from the previous sampling rounds, although the concentration was slightly less at Dent Xpress
during Round 4 as compared to Round 3. The concentrations of TCE at each location had also increased,
except at Miller Tire, although the result still exceeded the Residential and Industrial RSL.
4.4 Indoor Air and Outdoor Air Analytical Results
4.4.1 Round 1 Sampling
As mentioned in Section 4.3.1 above, during Round 1 sampling, large portions of the concrete slab were
removed for renovations in the Former Church reception hall and USEPA Treatment Building. In addition,
the SSDS was not operating at that time. The indoor air sample in the Former Church was collected from
the main room where the concrete slab was intact, thus is not thought to have significantly affected the
result. The indoor air sample in the USEPA Treatment Building was collected from near the middle of the
building, in an effort to reduce interference from the large overhead door, heating unit mounted near the
ceiling in the southeast corner, and exposed soil from the slab removal. During the 24-hour sample
collection period, the tenant had relocated the summa canister closer to the exposed area in order to park
a trailer inside the building. These events may have artificially increased the indoor air result.
Concentrations of PCE in the five indoor air samples ranged from 1.5 ng/m3 in the Blessed Sacrament Thrift
Store to 17 ng/m3 in the Former Church. The PCE concentrations in both the Former Church (17 ng/m3)
and the USEPA Treatment Building (16 ng/m3) were greater than the RSL for residential air of 11 ng/m3,
but not the Industrial RSL of 47 ng/m3. TCE and VC were not detected in any indoor air samples collected
during Round 1.
The ambient outdoor air sample collected during Round 1, was placed on the roof of the Former Church
reception hall, directly above the back door to the alley. This location was chosen to prevent tampering
by passers-by during the 24-hour collection period. The analytical results for the outdoor air sample were
not detect for PCE, TCE, or VC.
4.4.2 Round 2 Sampling
Due to the inability to access Dent Xpress during the Round 2 sampling period, an indoor air sample was
not collected at this location. PCE was detected at four of the five indoor air sampling locations at
concentrations ranging from 1.7 ng/m3 to 7.2 ng/m3, all of which are below the residential and industrial
screening levels of 11 ng/m3 and 47 ng/m3, respectfully. TCE and VC were not detected in any indoor air
samples during Round 2.
The ambient outdoor air sample was placed in the same location as the previous Round, on the roof above
the door to the Former Church reception hall, to avoid tampering during the 24-hour collection period.
PCE, TCE, and VC were not detected.
4.4.3 Round 3 Sampling
Round 3 sampling included all six indoor and outdoor air sample locations. PCE was detected at each
indoor air sampling location but was not detected in outdoor ambient air. The five indoor air sampling
locations exhibited PCE at concentrations ranging from 2.6 ng/m3 to 46 ng/m3; the samples from the
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USEPA Treatment Building and the Former Church exceeded the Residential RSL of 11 ng/m3. TCE was
detected at low concentrations at the Former Church and Miller Tire, but the detected concentrations
were less than the Residential and Industrial RSLs. VC was not detected in the indoor or outdoor air
samples during Round 3.
4.4.4 Round 4 Sampling
Round 4 sampling included all six indoor and outdoor air sample locations. PCE was detected at each
indoor air sampling location but was not detected in outdoor ambient air. The five indoor air sampling
locations exhibited PCE at concentrations ranging from 3.2 ng/m3 to 54 ng/m3. The samples from the
USEPA Treatment Building and the Former Church exceeded the Residential RSL of 11 ng/m3, and the
Industrial RSL of 47 ng/m3.
TCE was detected at low concentrations at the Former Church, Miller Tire, and the Blessed Sacrament
Thrift Store, but each was less than the Residential and Industrial RSL. VC was not detected in the indoor
or outdoor air samples during Round 4.
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MARY
Auxilio has conducted four consecutive post-remedial action sampling events at the Cleburn OU2 site
between November 2019 and August 2020. The purpose of the sampling is to monitor post-remediation
concentrations of PCE and TCE in air and groundwater. Prior to commencing the quarterly sampling
activities, Auxilio installed five new monitoring wells and six sub-slab vapor ports in six different business
locations. The objective of the sampling was to evaluate post-remediation concentrations.
The Sampling was conducted on a quarterly basis, or four sampling events. Sampling efforts consisted of
sampling groundwater at 21 groundwater monitoring wells, six sub-slab vapor locations, five indoor air
locations, and one outdoor ambient air sampling location.
Samples were analyzed for PCE, TCE, and VC by USEPA Method SW846-8260C in aqueous matrix and by
TO-15 in air. Groundwater analytical results for PCE, TCE, and VC were compared to the USEPA MCLs of
5.0 ng/L, 5.0 ng/L, and 2.0 ng/L, respectively. Analytical results for PCE, TCE, and VC, in air were compared
to USEPA Residential RSLs of 11 ug/m3, 0.5 ug/m3, and 0.17 ug/m3, respectively, and the USEPA Industrial
RSLs of 47 ug/m3, 3.0 ug/m3, and 2.8 ug/m3, respectively.
Analytical results for groundwater are presented in Table 3-4, and Figure 4-4, Figure 4-5, and Figure 4-6.
Analytical results for air are presented in Table 3-5 and Figure 4-7.
5.1 Groundwater Sampling Results
During the four groundwater sampling events, VC was not detected in any sample within all depth
intervals. TCE was found to exceed the MCL of 5.0 ng/L in one monitoring well, MW-8A, within the shallow
depth interval during Round 3 and Round 4.
Numerous analytical results for PCE exhibited concentrations that exceeded the MCL of 5.0 ng/L within
the Shallow, Intermediate, and Deep aquifer Zones. The general trend appears to demonstrate an
increasing concentration of PCE at most monitoring wells from November 2019 through August 2020. The
background monitoring well, MW-13A, screened in the Shallow Zone, had PCE at concentrations that
exceeded the MCL during Round 2, Round 3, and Round 4.
5.2 Air Sampling Results
PCE was found in indoor air at the Former Church and the USEPA Treatment Building in excess of the
Residential RSL of 11 ug/m3 during Round 1, Round 3, and Round 4, and the Industrial RSL of 47 ug/m3
during Round 4. All other indoor air samples did contain PCE at concentrations greaterthan the laboratory
reporting limit, but less than the Residential RSL.
Sub-slab vapor samples contained greater concentrations of PCE during each sampling as compared to
indoor air and was found to exceed the Residential RSL in all but the Blessed Sacrament Thrift Store.
Round 2 exhibited the lowest concentrations of PCE, but overall, the trend appears to increase during
each sampling round. As was the case with groundwater, the warmer months of June and August appear
to have the greatest concentrations of COCs. Additional sampling events are planned during four
subsequent quarters to further observe and characterize the trends of COCs at the Site.
TCE was found in indoor and ambient outdoor air at concentrations greater than the laboratory reporting
limit, but not greater than the Residential RSL of 0.5 ug/m3. Sub-slab soil vapor exceeded the Residential
and Industrial RSL in numerous sampling locations. Clark Services and the Blesses Sacrament Thrift Store
were the only locations where sub-slab soil vapor did not exhibit concentrations of TCE that
exceeded the RSLs.
au ilio
maragement services
Contract No.: 68HE0719C0004
17
January 2021
-------
Final Annual Report for Confirmatory Sampling
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2)
During the four air sampling events, VC was not detected in any samples from indoor air or ambient
outdoor air. Sub-slab vapor samples collected in November 2019 revealed four locations that had VC in
excess of the Residential RSL; however, subsequent sampling between February 2020 and August 2020
demonstrated no analytical results that had VC greater than the laboratory reporting limit.
au ilio
maragement services
Contract No.: 68HE0719C0004
18
January 2021
-------
Final Annual Report for Confirmatory Sampling
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2)
au ilio
maragement services
6.0 REFERENCES
Auxilio, 2019. FINAL-Uniform Federal Policy - Quality Assurance Project Plan, Confirmatory Sampling,
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2), Grand Island, Nebraska, Contract No.
68HE0719C0004. October.
Ayuda, 2019. Remedial Action Completion Report-Final, In-situ Thermal Remediation, Cleburn Street Well
Superfund Site Operable Unit 2 (OU-2), Grand Island, Nebraska. August.
HGL, 2011. Final Focused Remedial Investigation Report, Cleburn Street Well Site, Operable Unit 2, Grand
Island, Nebraska. April.
HGL, 2015. July 2015 Groundwater Monitoring Report, Cleburn Street Well Site, Grand Island, Nebraska.
July.
Nebraska Department of Human Health and Services, 2011. Title 178, Chapter 10: Regulations Governing
Licensure of Water Well and Pump Installation Contractors and Certification of Water Well Drilling,
Pump Installation, and Water Well Monitoring Supervisors. June.
USEPA, 2009. Well Installation and Testing and Evaluation of Silt Layer, Cleburn Street Well Superfund Site
Operable Units 1 and 2, Grand Island, Nebraska.
USEPA, 2010. Low Stress (Low Flow) Purging and Sampling Procedure for the Collection of Groundwater
Samples from Monitoring Wells. 19 January 2010.
USEPA, 2012. Amendment to the Record of Decision, Cleburn Street Well Superfund Site, Operable Units
1 through 4, Grand Island, Nebraska. September.
USEPA, 2019. Region 7. Performance Work Statement Confirmatory Sampling, Cleburn Street Well
Superfund Site, Operable Unit #2, Grand Island, Nebraska. July.
USEPA, 2020. Regional Screening Level Summary Table. November.
U.S. Fish and Wildlife Service, 2017. Wetlands Mapper. 1 May 2017.
Contract No.: 68HE0719C0004
19
January 2021
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Final Annual Report for Confirmatory Sampling
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2)
mragement services
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January 2021
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iu ilio
Final Annual Report for Confirmatory Sampling
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2)
mragement services
FIGURES
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Final Annual Report for Confirmatory Sampling
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2)
mragement services
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Center
Grand Island
vM US Highway 30
30
2 1
TCff
G
\
3.
0s
*s
<8.
|> bing
281
Bus
V,
Bus
r 21
Central Nebraska Regional
Airport
A>*
YP*4
fltf
nner Park
¦ * ¦ ¦ ¦
Imagery: Hexagon Imagery Program 0.3m 2014 RGB | CIR Ortho, NAD 1983 (2011) UTM Zone 14N, Acquisition Date: 02-JuI-2014 to 21-Sep-2014.
au ilio
management services
PROJECT:
CLEBURN STREET WELL
SUPERFUND SITE
OPERABLE UNIT 2
GRAND ISLAND, NEBRASKA
40.925175°, -98.348697°
TITLE:
SITE LOCATION
2019-2020 ANNUAL REPORT
LEGEND:
a Site Location
Buildings
Nebraska
SCALE:
1:40,000
N o
0.5
Miles
NAD 1983 StatePlane Nebraska FIPS 2600 Feet
DRN/MOD BY:
MKM
DATE:
11/20/2020
IREV: N/A
FIGURE:
1-1
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management services
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General
xAuto motive
Access
Electrical
Systems
management services
PROJECT:
MW-3B
CLEBURN STREET WELL
SUPERFUND SITE
OPERABLE UNIT 2
GRAND ISLAND, NEBRASKA
40.925175°, -98.348697
TITLE:
SUB-SLAB VAPOR, INDOOR AIR,
AND OUTDOOR AIR
SAMPLE LOCATIONS
EM-MW01S
EM-MWD2D
EM-MW03I
EM-MW04D
Former Dy
Cleaner
EM-MWQ1D
EM-MW04S
Thrift
Store-SV
EM-MW02S
2019-2020 ANNUAL REPORT
Dent Xpress
Blessed
Sacrament
Thrift Store
Former Church
hurch-SV
Church-IA
•eatment-SV
Clark
Services-SV
LEGEND:
• Indoor Air Sample
• Outdoor Air Sample
• Sub-Slab Vapor Sample
© Monitoring Wells
Building
EPA
Treatment-
Former EPA
Treatment
Building
Miller
Used Tire
Warehouse
Former
Reception
Hall
NAD 1983 StatePlane Nebraska FIRS 2600 Feet
DRN/MOD BY:
DATE:
FIGURE:
11/20/2020
Imagery: Hexagon Imagery Program 0.3m 2014 RGB | CIR Ortho, NAD 1983 (2011) UTM Zone 14N, Acquisition-date: 02-Jul-2014 to 21-Sep-2014.
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au ilio
management services
PROJECT:
CLEBURN STREET WELL
SUPERFUND SITE
OPERABLE UNIT 2
GRAND ISLAND, NEBRASKA
40.925175°, -98.348697°
TITLE:
SHALLOW ZONE
GROUNDWATER CONTOURS
2019-2020 ANNUAL REPORT
LEGEND:
© Shallow Zone Monitoring Wells
Intermediate and Deep
Zone Monitoring Wells
Shallow Zone Groundwater
Elevation Contour - (ft amsl)
— Groundwater Flow Direction
Building
—i- Railroad Tracks
ft amsl = feet above mean sea level
Groundwater levels collected:
November 09, 2019
February 03, 2020
June 01, 2020
August 24, 2020
SCALE
1:2,000
N o
A
110
Feet
220
NAD 1983 StatePlane Nebraska FIRS 2600 Feet
DRN/MOD BY:
MKM
DATE:
12/21/2020
REV: 0
FIGURE:
4-1
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y auxilio
management services
PROJECT:
CLEBURN STREET WELL
SUPERFUND SITE
OPERABLE UNIT 2
GRAND ISLAND, NEBRASKA
40.925175°, -98.348697°
TITLE:
INTERMEDIATE ZONE
GROUNDWATER CONTOURS
2019-2020 ANNUAL REPORT
LEGEND:
® intermediate Zone Monitoring Weils
Shallow and Deep Zone Monitoring Wells
Intermediate Zone Groundwater
Contours (ft amsl)
Groundwater Flow Direction
Building
—i- Railroad Tracks
ft amsl = feet above mean sea level
Groundwater levels collected:
November 09, 2019
February 03, 2020
June 01, 2020
August 24, 2020
SCALE:
N
1:2,000
A
0
110
Feet
220
NAD 1983 StatePlane Nebraska FIRS 2600 Feet
DRN/MOD BY: DATE
MKM
12/21/2020
REV: 0
FIGURE:
4-2
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au ilio
management services
PROJECT:
CLEBURN STREET WELL
SUPERFUND SITE
OPERABLE UNIT 2
GRAND ISLAND, NEBRASKA
40.925175°, -98.348697a
TITLE:
SHALLOW ZONE
PCE CONCENTRATIONS
IN GROUNDWATER
2019-2020 ANNUAL REPORT
LEGEND:
® Shallow Monitoring Wells
Intermediate and Deep Monitoring Wells
~- Groundwater Flow Direction
Building
—t- Railroad Tracks
PCE Concentrations (ug/L) [ I 200 - 300
~ 0-5 ~ 300-400
~ 5 - 50 400 - 500
~ 50 - 100 ~ 500- 1,000
~ 100-200 ~ 1,000 - 2,000
ug/L = micrograms per liter
PCE = tetrachloroethylene
MCL = Maximum contaminant level
PCE MCL = 5.0 ug/L
U = The analyte was not detected at or
above the reporting limit,
UJ = The analyte was not detected at or
above the reporting limit. The reported
value is an estimate.
J = The identification of the analyte is
acceptable; the reported value is an
estimate.
Groundwater samples were collected:
November 5-11. 2019
February 4-6, 2020
June 2-4, 2020
August 25-26, 2020
SCALE:
1:2,000
N
A
110
Feet
220
NAD 1983 StatePlane Nebraska FIPS 2600 Feet
DRN/MOD BY:
MKM
DATE:
12/21/2020
REV: 1
FIGURE:
4-4
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NOVEMBER 2019
tSs
4/^
P-104BB
PCE: 1.0
UJ ug/L
\
% EM-MW02D
y PCE: 8.4
ug/L/
0
EM-M WO 1D
/^CE: 1.6 ug/L
c> 1
>
JUNE 2020
O
rO
U ug/L
ug/L
MW-105BB ^
PCE 7.9 ug/L
o f
M-MW04D
£CE: 21
ug/L
MW-107BB
PCE: 1.0
U ug/L
MW2019-1
PCE:
U uq/L
6^
O*
1 fP
MW-108BB
PCE: 2.9/
ug/l
'2019-2B
ug/L
Vf 2020
O
&
¦0
MW-104BB ^
PCE: NA ug/L
EM-MW02D ®
\ \PCE 17
\
EM-MWG1D ™cMe^
PCE: 1 ug/L ..
1 ^
u auxilio
:
management services
PROJECT:
CLEBURN STREET WELL
SUPERFUND SITE
OPERABLE UNIT 2
GRAND ISLAND, NEBRASKA
40.925175°, -98.348697°
TITLE:
x>
%
0
MW-104BB
PCE: NA ug/L
\ EjMwiafi
\PGE>r0
U u$fD
sy*>>
EM-MW03D
PCE: 67 ug/L
INTERMEDIATE ZONE
PCE CONCENTRATIONS
IN GROUNDWATER
2019-2020 ANNUAL REPORT
.EGEND:
Shallow and Deep Zone Monitoring
Wells
© Intermediate Zone Monitoring Wells
~ Groundwater Flow Direction
Building
-I- Railroad Tracks
PCE Concentration (ug/L) J 150-200
~ 0-5 ~ 200-250
~ 5-50 ~ 250 - 300
~ 50 - 100 ~ 300 - 350
II I 100-150
ug/L = micrograms per liter
PCE = tetrachloroethylene
MCL = Maximum contaminant level
PCE MCL = 5.0 ug/L
NA= Not Applicable, well was not sampled
U = The analyte was not detected at or
above the reporting limit.
UJ = The analyte was not detected at or
above the reporting limit. The reported
value is an estimate.
J = The identification of the analyte is
acceptable; the reported value is an
estimate.
Groundwater samples were collected:
November 5-11, 2019
February 4-6, 2020
June 2-4, 2020
August 25-26, 2020
ISCALE:
1:2,000
N
o
110
220
Feet
NAD 1983 StatePlane Nebraska FIRS 2600 Feet
3RN/MOD BY: DATE
MKM
12/22/2020
REV: 0
FIGURE:
4-5
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Sample ID
Sample
Type
Sample Date
PCE
TCE
VC
Mg/m3
Mg/m3
Mg/m3
Church-IA
Indoor Air
11/5/19-11/6/19
17
0.27 U
0.13 U
2/4/20-2/5/20
0.34 U
0.14 U
0.13 U
6/1/20-6/2/20
22
0.14-
0.13 U
8/24/20-8/25/20
49
0.24
0.13 U
"77k
General
Sample ID
Sample
Type
Sample Date
PCE
TCE
VC
Mg/m3
Mg/m3
Mg/m3
Dent Xpress-
IA
Indoor Air
11/5/19-11/6/19
3.5
0.27 U
0.13 U
2/4/20-2/5/20
NA
NA
NA
6/2/20-6/3/20
2.6
0.14 U
0.13 U
8/25/20-8/26/20
7.7
0.14 U
0.13 U
Sample ID
Sample
Type
Sample Date
PCE
TCE
VC
Mg/m3
Mg/m3
Mg/m3
DentXpress-
SV
Soil Vapor
11/5/19-11/6/19
18
0.35
0.26
2/4/20-2/5/20
NA
NA
NA
6/2/20-6/3/20
1900
1.8
0.13 U
8/25/20-8/26/20
1700
5.0
1.3 U
MW-3B
MW-8A
Sample ID
Sample
Type
Sample Date
PCE
TCE
VC
Mg/m3
Mg/m3
Mg/m3
Church-SV
Soil Vapor
11/5/19-11/6/19
16
0.27 U
0.22
2/4/20-2/5/20
0.86
0.14U
0.13 U
6/1/20-6/2/20
160
0.62
0.13 U
8/24/20-8/25/20
480
2.0
0.13 U
Sample ID
Sample
Type
Sample Date
PCE
TCE
VC
Mg/m3
Mg/m3
Mg/m3
Thrift Store-
IA
Indoor Air
11/5/19-11/6/19
1.5
0.27 U
0.13 U
2/5/20-2/6/20
1.7
0.14 U
0.13 U
6/1/20-6/2/20
4.0
0.14 U
0.13 U
8/24/20-8/25/20
3.2
0.14
0.13 U
Forme
Church
CfWch-IA
l-orrner Dy
Cleaner
^hurch-SV
EM-MW01S
e -
EM-MW01D
EM-MW02D
EM-MW02S
snt
tess-SV
03S
Treatment-SV
* \
1
V
Sample ID
EPA
Treatment
Bui Idi ng-IA
Sample
Type
Indoor Air
Sample Date
11/5/19-11/6/19
2/4/20-2/5/20
6/1/20-6/2/20
8/24/20-8/25/20
PCE
TCE
VC
Hg/m Mg/m Mg/m
16
7.2
46
54
0.27 U
0.14 U
0.14U
0.14 U
0.13 U
0.13 U
0.13 U
0.13 U
a
&
cS
Sample ID
Sample
Type
Sample Date
PCE
TCE
VC ]
Mg/m3
Mg/m3
Mg/m3
MillerTire-SV
Soil Vapor
11/5/19-11/6/19
13
0.27 U
0.13 U
2/4/20-2/5/20
63
0.63
0.13 U
6/1/20-6/2/20
8300
6.3
0.13 U
8/24/20-8/25/20
2800
4.9
1.3 U
Sample ID
Sample
Sample Date
PCE
TCE
VC
Type
Mg/m3
Mg/m3
Mg/m3
11/5/19-11/6/19
0.34 U
0.27 U
0.13 U
Outdoor-OA
Outdoor
2/5/20-2/6/20
0.34 U
0.14 U
0.13 U
Air
6/1/20-6/2/20
0.34 U
0.14 U
0.13 U
8/25/20-8/26/20
0.34 U
0.14 U
0.13 U
Sample ID
Sample
Type
Sample Date
PCE
TCE
VC 1
Mg/m3
Mg/m3
Mg/m3
MillerTi re-IA
Indoor Air
11/5/19-11/6/19
6.2
0.27 U
0.13 U
2/4/20-2/5/20
4.3
0.14 U
0.13 U
6/1/20-6/2/20
9.0
0.38
0.13 U
8/24/20-8/25/20
6.7
0.34
0.13 U
Sample ID
Sample
Sample Date
PCE
TCE
VC
Type
Mg/m3
Mg/m3
Mg/m3
11/5/19-11/6/19
3.5
0.27 U
0.22
Thrift Store-
Soil Vapor
2/5/20-2/6/20
1.2
0.14 U
0.13 U
SV
6/1/20-6/2/20
5.3
0.14 U
0.13 U
8/24/20-8/25/20
7.5
0.23
0.13 U
Sample ID
Sample
Sample Date
PCE
TCE
VC
Type
Mg/m3
Mg/m3
Mg/m3
11/5/19-11/6/19
7.4
0.27 U
0.27
Clark Services
Soil Vapor
2/4/20-2/5/20
2.1
0.38
0.13 U
-SV
6/2/20-6/3/20
19
0.14 U
0.13 U
8/24/20-8/25/20
170
0.17
0.13 U
Imagery: Hexagon Imagery Program 0.3m 2014 RGB | CIR Ortho, NAD 1983 (2011) UTM Zone 14N, Acquisitioh Date: 02-Jul-2014 to 21-Sep-2014.
4*
au ilio
management services
PROJECT:
CLEBURN STREET WELL
SUPERFUND SITE
OPERABLE UNIT 2
GRAND ISLAND, NEBRASKA
40.925175°, -98.348697°
TITLE:
SUB-SLAB VAPOR, INDOOR AIR,
AND OUTDOOR AIR
VOC CONCENTRATIONS
2019-2020 ANNUAL REPORT
LEGEND:
•
Indoor Air Sample
•
Outdoor Air Sample
•
Sub-Slab Vapor Sample
Monitoring Wells
~
Building
PCE = Tetrachloroethene
TCE = Trichloroethene
VC= Vinyl Chloride
|jg/m3 = micrograms per cubic meter
SL = Screening Level
U = The analyte was not detected at or
above the reporting limit
NA= Not Applicable. Business was not
available for sampling.
ID = Identification
Result exceeds the Industrial Screening Level
Result exceeds the Residential Screening Level
PCE
(MS/m')
TCE
(Mg/m3)
VC
(Mg/m8;
Residential SL:
11.0
0.48
0.17
Industrial SL:
47.0
3.00
2.80
SCALE:
N
1:500
A
NAD 1983 StatePlane Nebraska FIPS 2600 Feet
DRN/MOD BY:
MKM
DATE:
11/20/2020
REV: 0
FIGURE:
4-7
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Final Annual Report for Confirmatory Sampling
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2)
mragement services
TABLES
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Final Annual Report for Confirmatory Sampling
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2)
mragement services
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Table 1-1: Screening Levels
2019-2020 Annual Report
Cleburn Street Well Superfund Site OU-2, Grand Island, Nebraska
Parameter
Calculated Screening Levels
for Water (iig/L)
Calculated Screening
Levels for Air
Residential Screening Level
(Hg/m3)
Industrial Screening Level
(Hg/m3)
Tetrachloroethylene (PCE)
5.0
11
47
Trichloroethylene (TCE)
5.0
0.48
3.0
Vinyl Chloride (VC)
2.0
0.17
2.8
Notes:
Hg/L = micrograms per liter
Hg/m3 = micrograms per cubic meter
HQ= Hazard Quotient
MCL = Maximum Contaminant Level
RSL = Regional Screening Level
TR = Target Cancer Risk
USEPA = United States Environmental Protection Agency
(1) Screening Levels for aqueous matrix are based on the USEPA's MCL with an HQ of 1.0
(2) USEPA RSL for Air; TR=lE-06, HQ=1.0 (May 2019)
-------
Table 3-1: Soil Boring and Monitoring Well Completion Details
2019-2020 Annual Report
Cleburn Street Well Superfund Site OU-2, Grand Island, Nebraska
Sample
Identification
Date
Installed
Northing
(feet)
Easting
(feet)
Top-of-Casing
Elevation
(ft amsl)
Ground
Surface
Elevation
(ft amsl)
Boring
Depth
(ft bgs)
Screen
Interval
(ft bgs)
Screen
Length
(feet)
Screened Zone
MW-8A
6/24/1993
1865.77
1866.31
29.35
14.5-29.5
15
Shallow
MW-8B
6/24/1993
1866.05
1866.37
84.75
75.5-85.5
10
Deep
MW-11A
6/25/1993
1865.23
1865.69
28.70
14.5-29.5
15
Shallow
MW-11B
6/26/1993
1865.02
1865.60
97.00
87.5-97.5
10
Deep
MW-13A
3/2/1994
1866.79
1867.12
34.85
17.0-32.0
15
Shallow
MW-104AA
2/14/2009
1866.52
1866.92
34.75
24.8-34.8
10
Shallow
MW-104BB
2/14/2009
1866.69
1866.98
49.70
39.8-49.8
10
Intermediate
MW-105BB
2/11/2009
1865.82
1866.44
49.55
39.9-49.9
10
Intermediate
MW-107BB
2/14/2009
1866.21
1866.53
49.65
39.7-49.7
10
Intermediate
MW-108BB
2/12/2009
1865.88
1866.18
49.95
40-50
10
Intermediate
EM-MW01S
4/18/2018
1866.97
1867.60
35.0
30-35
5
Shallow
EM-MW01D
4/18/2018
1866.67
1867.06
43.0
38-43
5
Intermediate
EM-MW02S
3/13/2018
1865.73
1866.18
35.0
30-35
5
Shallow
EM-MW02D
3/14/2018
1865.79
1866.21
44
38.8-43.8
5
Intermediate
EM-MW03S
2/22/2018
1866.64
1866.94
35
30-35
5
Shallow
EM-MW03D
2/22/2018
1866.56
1866.96
43
38-43
5
Intermediate
EM-MW04S
2/21/2018
1867.49
1867.76
35.0
30-35
5
Shallow
EM-MW04D
2/21/2018
1867.09
1867.28
43.0
38-43
5
Intermediate
MW-2019-1A
11/7/2019
402002.135
2096768.902
1866.52
1866.79
35.0
25-35
10
Shallow
MW-2019-1B
11/7/2019
402004.766
2096772.892
1866.56
1866.83
50.0
40-50
10
Intermediate
MW-2019-1C
11/7/2019
401999.205
2096772.627
1866.39
1866.75
86.7
76.7-86.7
10
Deep
MW-2019-2B
11/7/2019
401911.609
2097297.557
1865.07
1865.5
50.0
40-50
10
Intermediate
MW-2019-2C
11/7/2019
401903.016
2097302.008
1865.16
1865.41
87.0
77-87
10
Deep
Construction Details:
Wellhead completions were flush-mount for all groundwater monitoring wells
Riser - All new wells were constructed using 2-inch nominal diameter, Schedule 40, flush-joint, threaded polyvinyl chloride
Screens - All water table wells were installed with 0.010-inch, flush-joint threaded, continuous slot, polyvinyl chloride screens
Filter Pack - #5 silica sand
Bentonite Seal - 3/8" uncoated bentonite chips in wells installed for this investigation
2' X 2' X 6" concrete pads for all monitoring wells, excluding at the Former Petroleum Fire Training Area
12" nominal diameter X 6" thick concrete pads for monitoring wells installed at the Former Petroleum Fire Training Area
Notes:
1) Depth to top of screen and boring depth were measured from ground surface during well installation activities.
2) Survey location data were provided by the surveyor in State Plane coordinates that were converted to latitude and longitude.
3) Northings and eastings based on North American Datum of 1983 (NAD 83)
4) Elevation data based on National Geodetic Vertical Datum of 1988 (NAVD 88).
ft amsl = Feet Above Mean Sea Level
ft bgs = Feet Below Ground Surface
-------
Table 3-2: Groundwater Elevations
2019-2020 Annual Report
Cleburn Street Well Superfund Site OU-2, Grand Island, Nebraska
Station Name
Top of
Casing
Elevation
(ft amsl)
Screened
Interval
{ft bgs)
Well Zone
Rounc
1:11/9/19
Round 2: 2/3/2020
Round 3: 6/1/2020
Round 4: 8/24/2020
Depth to
Water
(ft btoc)
Elevation of
Groundwater
(ft amsl)
Depth to
Water
(ft btoc)
Elevation of
Groundwater
(ft amsl)
Depth to
Water
(ft btoc)
Elevation of
Groundwater
(ft amsl)
Depth to
Water
(ft btoc)
Elevation of
Groundwater
(ft amsl)
MW-8A
1865.77
14.5-29.5
Shallow
18.14
1847.63
19.07
1846.70
18.59
1847.18
18.83
1846.94
MW-8B
1866.05
75.5-85.5
Deep
18.40
1847.65
19.42
1846.63
18.72
1847.33
19.18
1846.87
MW-11A
1865.23
14.5-29.5
Shallow
18.93
1846.30
19.79
1845.44
19.16
1846.07
19.49
1845.74
MW-11B
1865.02
87.5-97.5
Deep
18.56
1846.46
19.54
1845.48
18.76
1846.26
18.25
1846.77
MW-13A
1866.79
17.0-32.0
Shallow
18.98
1847.81
19.93
1846.86
19.34
1847.45
19.69
1847.10
MW-104AA
1866.52
24.8-34.8
Shallow
18.82
1847.70
19.79
1846.73
19.18
1847.34
19.54
1846.98
MW-104BB
1866.69
39.8-49.8
Intermediate
18.62
1848.07
19.68
1847.01
18.95
1847.74
19.37
1847.32
MW-105BB
1865.82
39.9-49.9
Intermediate
18.20
1847.62
19.23
1846.59
18.55
1847.27
18.99
1846.83
MW-107BB
1866.21
39.7-49.7
Intermediate
19.32
1846.89
20.30
1845.91
19.52
1846.69
20.00
1846.21
MW-108BB
1865.88
40-50
Intermediate
19.58
1846.30
20.50
1845.38
19.71
1846.17
20.18
1845.70
EM-MW01S
1866.97
30-35
Shallow
19.13
1847.84
20.13
1846.84
19.51
1847.46
19.93
1847.04
EM-MW01D
1866.67
38-43
Intermediate
18.34
1848.33
19.36
1847.31
18.71
1847.96
19.14
1847.53
EM-MW02S
1865.73
30-35
Shallow
17.82
1847.91
18.89
1846.84
18.25
1847.48
18.58
1847.15
EM-MW02D
1865.79
38.8-43.8
Intermediate
17.92
1847.87
18.99
1846.80
18.30
1847.49
18.74
1847.05
EM-MW03S
1866.64
30-35
Shallow
18.89
1847.75
19.95
1846.69
19.28
1847.36
19.67
1846.97
EM-MW03D
1866.56
38-43
Intermediate
18.76
1847.80
19.79
1846.77
19.09
1847.47
19.55
1847.01
EM-MW04S
1867.49
30-35
Shallow
19.84
1847.65
20.81
1846.68
20.13
1847.36
20.55
1846.94
EM-MW04D
1867.09
38-43
Intermediate
19.64
1847.45
20.63
1846.46
19.91
1847.18
20.37
1846.72
MW-2019-1A
1866.52
25-35
Shallow
19.38
1847.14
20.32
1846.20
19.55
1846.97
20.01
1846.51
MW-2019-1B
1866.56
40-50
Intermediate
19.45
1847.11
20.37
1846.19
19.62
1846.94
20.09
1846.47
MW-2019-1C
1866.39
76.7-86.7
Deep
19.31
1847.08
20.23
1846.16
19.47
1846.92
19.95
1846.44
MW-2019-2B
1865.07
40-50
Intermediate
19.35
1845.72
20.03
1845.04
19.18
1845.89
19.70
1845.37
MW-2019-2C
1865.16
77-87
Deep
19.25
1845.91
20.13
1845.03
19.29
1845.87
19.82
1845.34
Notes:
amsl = Above Mean Sea Level
bgs = Below Ground Surface
btoc = Below Top-of-Casing
ft = feet
-------
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-------
Table 3-3: Final Groundwater Quality Parameters
2019-2020 Annual Report
Cleburn Street Well Superfund Site OU-2, Grand Island, Nebraska
Temperature
Specific Conductivity
DO Concentration
Oxidation Reduction Potential
PH
Turbidity
Flow Rate
Volume Purged
Drawdown
Sample ID
(°C)
(pS/cm)
(mg/L)
(mV)
(SU)
(NTU)
(ml/min)
(gal)
(feet)
Sample Date
Sample Date
Sample Date
Sample Date
Sample Date
Sample Date
Sample Date
Sample Date
Sample Date
Nov
Feb
June
Aug
Nov
Feb
June
Aug
Nov
Feb
June
Aug
Nov
Feb
June
Aug
Nov
Feb
June
Aug
Nov
Feb
June
Aug
Nov
Feb
June
Aug
Nov
Feb
June
Aug
Nov
Feb
June
Aug
2019
2020
2020
2020
2019
2020
2020
2020
2019
2020
2020
2020
2019
2020
2020
2020
2019
2020
2020
2020
2019
2020
2020
2020
2019
2020
2020
2020
2019
2020
2020
2020
2019
2020
2020
2020
MW-8A
31.8
27.1
24.8
25.5
1269
1314
1289
1150
0.34
0.42
1.07
0.15
+49.2
+56.4
+143.4
+57.2
6.51
6.48
6.46
6.61
4.26
10.30
10.20
3.30
180
200
70
200
2.45
1.60
1.48
1.85
0.00
0.05
0.02
0.05
MW-8B
22.5
21.3
26.7
24.1
604
662
689
674
2.60
2.99
1.18
0.95
+49.1
+57.0
+32.2
+56.2
6.67
6.79
6.78
6.89
6.19
21.60
40.80
10.60
260
240
95
136
4.26
3.36
1.81
1.15
0.02
0.03
0.01
0.01
MW-11A
15.9
13.9
19.8
19.9
771
632.6
404
679
9.04
9.63
5.21
5.03
+81.5
+70.8
+176.8
+80.2
6.45
6.58
6.56
6.26
5.94
3.50
25.80
0.97
220
210
70
105
3.08
3.00
0.89
0.79
0.03
0.04
0.01
0.01
MW-11B
14.9
12.6
28.1
20.2
377.1
362.7
382.4
371.9
0.17
0.21
1.10
0.19
+2.0
-34.1
-79.8
-9.30
7.27
7.38
7.34
6.92
22.50
4.83
76.30
4.22
180
120
40
90
3.42
0.98
0.63
0.86
0.24
0.21
0.05
0.19
MW-13A
18.4
12.8
19.4
21.8
868
791
752
718
9.00
7.22
2.77
6.14
+155.1
+257.9
+210.1
+274.2
6.83
6.78
6.78
6.62
0.16
0.34
1.44
0.02
240
157
70
156
2.03
1.00
0.59
1.11
0.05
0.04
0.00
0.04
MW-104AA
15.8
NS
1980
NS
7.00
NS
+148.5
NS
6.72
NS
0.10
NS
260
NS
2.47
NS
0.08
NS
MW-104BB
15.0
NS
913
NS
5.12
NS
+147.6
NS
6.61
NS
0.76
NS
200
NS
2.35
NS
0.01
NS
MW-105BB
27.8
24.6
23.7
26.5
783
862
869
893
3.41
4.86
4.29
2.63
+126.0
+135.3
+259.8
+273.4
6.56
6.58
6.50
6.62
0.29
2.75
3.18
4.55
220
250
80
90
1.92
1.80
0.59
1.24
0.01
0.00
0.00
0.00
MW-107BB
18.2
18.3
22.1
23.2
820
863
815
879
3.26
4.44
4.27
2.47
+48.7
+62.8
+189.1
+198.7
6.43
6.63
6.57
6.34
0.96
2.35
0.02
0.97
240
240
226
144
2.03
1.71
1.66
1.67
0.00
0.00
0.01
0.00
MW-108BB
14.8
14.4
21.3
20.6
909
912
937
829
6.91
6.10
5.25
3.73
+100.1
+60.7
+216.1
+237.4
6.47
6.63
6.53
6.40
2.23
4.69
0.52
1.31
240
220
90
120
1.80
1.80
0.67
3.80
0.00
0.00
0.01
0.00
EM-MW01S
22.2
20.0
23.4
22.7
925
895
844
770
2.51
1.22
2.22
2.36
+39.6
+139.7
+219.8
+203.3
6.73
6.75
6.70
6.76
5.88
5.38
19.80
2.27
240
195
180
200
5.31
2.60
2.59
3.47
0.10
0.13
0.19
0.20
EM-MW01D
17.8
20.4
22.4
21.9
866
872
850
815
4.23
4.83
3.73
4.08
+98.6
+76.6
+107.3
+147.0
6.79
6.84
6.79
6.79
4.19
8.45
10.50
15.50
240
250
174
206
4.58
2.33
2.11
2.56
0.04
0.11
0.05
0.04
EM-MW02S
33.5
25.4
28.5
25.3
1433
1004
1558
1700
0.12
0.11
0.42
0.24
-82.8
-109.6
+26.9
-53.0
6.86
7.23
7.15
7.11
4.39
1.65
4.67
17.20
280
103
85
210
5.62
1.84
1.89
5.38
0.14
0.08
0.08
0.19
EM-MW02D
31.1
26.3
27.0
23.6
851
822
871
811
2.70
2.39
2.25
3.20
+30.2
+37.5
+64.5
+68.8
6.70
6.89
6.81
6.85
5.70
3.88
21.30
3.92
280
220
90
250
6.36
1.74
1.14
3.83
0.00
0.02
0.00
0.03
EM-MW03S
31.3
27.8
28.0
26.1
1046
1006
894
1125
2.00
1.01
0.89
0.53
+151.2
+276.5
+215.3
+206.3
6.26
6.23
6.35
6.06
1.85
0.38
1.94
0.02
210
140
140
90
2.39
3.00
1.18
0.67
0.31
0.22
0.29
0.20
EM-MW03D
31.5
27.7
26.9
24.9
874
908
879
904
2.53
1.54
1.98
1.82
+120.5
+272.8
+174.2
+162.2
6.76
6.68
6.70
6.72
0.44
0.61
0.60
0.31
260
150
140
160
1.85
1.19
1.00
1.23
0.00
0.00
0.00
0.00
EM-MW04S
24.2
23.1
25.0
25.6
1467
1497
1957
1323
4.46
4.22
4.01
1.87
+143.2
+265.1
+279.8
+163.8
6.84
6.74
6.47
6.34
3.20
2.81
2.75
2.30
240
200
85
133
2.85
3.70
0.72
0.98
0.10
0.10
0.03
0.06
EM-MW04D
25.2
22.4
26.0
25.4
843
898
911
904
2.69
1.94
1.37
1.40
+145.5
+255.5
+249.0
+152.6
6.84
6.82
6.85
6.48
3.62
2.29
2.83
2.36
260
150
80
141
2.83
0.99
0.59
1.04
0.00
0.01
0.00
0.01
MW-2019-1A
19.5
19.2
20.9
21.0
735
715
642
649
5.76
5.27
7.91
6.66
+148.2
+256.0
+168.6
+165.3
7.15
7.03
6.94
6.94
3.13
0.99
0.02
0.02
200
150
160
140
2.06
1.66
1.14
0.98
0.26
0.21
0.25
0.22
MW-2019-1B
22.2
18.6
22.4
22.3
850
843
805
844
1.32
4.80
3.76
5.06
+147.3
+271.6
+167.4
+196.6
6.68
6.67
6.57
6.63
2.82
1.11
0.02
0.75
210
150
170
170
1.89
1.31
1.21
1.53
0.00
0.00
0.00
0.00
MW-2019-1C
20.6
16.7
21.9
21.5
616
596
595
633
6.12
2.32
2.62
3.22
+146.2
+260.5
+150.6
+223.4
6.67
6.82
6.75
6.79
20.20
0.02
0.02
0.82
240
150
215
212
2.03
1.19
1.59
1.51
0.00
0.00
0.02
0.02
MW-2019-2B
14.2
13.4
16.8
18.6
763
769
792
783
4.47
3.96
4.56
3.15
+173.2
+294.5
+267.9
+294.9
6.63
6.45
6.55
6.43
2.30
1.12
3.81
3.24
200
150
216
115
1.74
1.39
1.54
3.65
0.00
0.00
0.01
0.01
MW-2019-2C
14.8
13.0
16.8
20.5
584.7
582.9
593.3
575
2.78
2.73
2.05
1.50
+108.6
+259.7
+247.1
+260.0
6.91
6.84
6.83
6.32
551.00
3.49
6.83
2.08
260
150
236
120
5.53
1.59
1.68
2.92
0.03
0.00
0.02
0.01
Notes:
1) Sampling period for Nov 2019: 05 November 2019 through 09 November 2019
2) Sampling period for Feb 2020: 04 February 2020 through 06 February 2020
3) Sampling period for June 2020: 02 June 2020 through 04 June 2020
4) Sampling period for Aug 2020: 25 August 2020 through 26 August 2020
°C = degrees Celsius
DO = dissolved oxygen
gal = gallon
mg/L = milligrams per liter
ml/min = milliliters per minute
mV = millivolts
NS = Not Sampled
NTU = nephelometric turbidity units
pH = potential of hydrogen
SU = standard units
piS/cm = microSiemens per centimeter
-------
Table 3-4: Summary of Analytical Results in Groundwater
2019-2020 Annual Report
Cleburn Street Well Superfund Site OU-2, Grand Island, Nebraska
Screened Zone
Sample
Identification
Tetrachloroethylene (PCE)
(Hg/L)
Trichloroethylene (TCE)
(Hg/L)
Vinyl Chloride (VC)
(Hg/L)
Screening Level: 5.0 ng/L
Screening Level: 5.0 ng/L
Screening Level: 2.0 ng/L
Sample Date
Sample Date
Sample Date
Nov 2019
Feb 2020
June 2020
Aug 2020
Nov 2019
Feb 2020
June 2020
Aug 2020
Nov 2019
Feb 2020
June 2020
Aug 2020
Shallow
MW-8A
83 J
300
420
670
1.1 J
2.5
5.4
9.1
1.0 UJ
1.0 u
1.0 u
1.0 u
MW-11A
1.0 UJ
1.0 u
1.0 U
1.0 u
1.0 UJ
1.0 u
1.0 u
1.0 u
1.0 UJ
1.0 u
1.0 u
1.0 u
MW-13A
1.9 J
220
1000
11
1.0 UJ
1.0 u
1.0 u
1.0 u
1.0 UJ
1.0 u
1.0 u
1.0 u
MW-104AA
1.0 UJ
NS
NS
NS
1.0 UJ
NS
NS
NS
1.0 UJ
NS
NS
NS
EM-MW01S
2.5
2.7
4.8
2.1
1.0 u
1.0 U
1.0 U
1.0 U
1.0 u
1.0 U
1.0 U
1.0 U
EM-MW01S-FD
2.4
NS
NS
NS
1.0 u
NS
NS
NS
1.0 u
NS
NS
NS
EM-MW02S
74 J
68
190
1600
1.0 UJ
1.0 U
1.0 U
2.1
1.0 UJ
1.0 U
1.0 U
1.0 U
EM-MW02S-FD
76 J
68
200
1700
1.0 UJ
1.0 U
1.0 U
2.2
1.0 UJ
1.0 U
1.0 U
1.0 U
EM-MW03S
110 J
180
300
100
1.0 UJ
1.0 U
1.0 U
1.0 U
1.0 UJ
1.0 U
1.0 U
1.0 U
EM-MW04S
110 J
250
300
430
1.0 UJ
3.2
1.0 U
2.6
1.0 UJ
1.0 U
1.0 U
1.0 U
MW-2019-1A
1.0 U
1.0 U
1.0 u
1.0 u
1.0 u
1.0 U
1.0 U
1.0 U
1.0 u
1.0 u
1.0 u
1.0 u
Intermediate
MW-104BB
1.0 UJ
NS
NS
NS
1.0 UJ
NS
NS
NS
1.0 UJ
NS
NS
NS
MW-105BB
1.0 UJ
2.3
7.9
71
1.0 UJ
1.0 U
1.0 U
4.2
1.0 UJ
1.0 U
1.0 U
1.0 U
MW-107BB
3.6 J
1.7
1.0 U
2.4
1.0 UJ
1.0 U
1.0 U
1.0 U
1.0 UJ
1.0 U
1.0 U
1.0 U
MW-108BB
7.7 J
18
2.9
2.3
1.0 UJ
1.0 U
1.0 U
1.0 u
1.0 UJ
1.0 u
1.0 u
1.0 u
EM-MW01D
1.6
1.0
1.0 U
1.0 U
1.0 u
1.0 U
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
EM-MW01D-FD
NS
1.0 u
1.0 u
1.0 u
NS
1.0 u
1.0 u
1.0 u
NS
1.0 u
1.0 u
1.0 u
EM-MW02D
8.4 J
1.7
1.1
1.3
1.0 UJ
1.0 u
1.0 u
1.0 u
1.0 UJ
1.0 u
1.0 u
1.0 u
EM-MW03D
3.5 J
6.2
6.3
67
1.0 UJ
1.0 u
1.0 u
1.0 u
1.0 UJ
1.0 u
1.0 u
1.0 u
EM-MW04D
12 J
12
21
45
1.0 UJ
1.0 u
1.0 u
1.0 u
1.0 UJ
1.0 u
1.0 u
1.0 u
MW-2019-1B
1.8
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
MW-2019-1B-FD
1.7
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
MW-2019-2B
310 J
120
15
5.3
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
Deep
MW-8B
1.0 UJ
1.0 u
1.0 u
1.0 u
1.0 UJ
1.0 u
1.0 u
1.0 u
1.0 UJ
1.0 u
1.0 u
1.0 u
MW-11B
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
MW-2019-1C
1.0 u
18
14
5.2
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
MW-2019-2C
5.1
12
18
3.3
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
Notes:
1) Sampling period for Nov 2019: 05 November 2019 through 09 November 2019
2) Sampling period for Feb 2020: 04 February 2020 through 06 February 2020
3) Sampling period for June 2020: 02 June 2020 through 04 June 2020
4) Sampling period for Aug 2020: 25 August 2020 through 26 August 2020
5) The Screening Levels for PCE, TCE, and VC are based on United States Environmental Protection Agency's Maximum Contaminant Levels (MCLs).
NS = Not Sampled
Hg/L = micrograms per liter
Bold text indicates analyte detected above the laboratory reporting limit
Result exceeds screening level
Lab Flag:
U = The analyte was not detected at or above the reporting limit.
UJ = The analyte was not detected at or above the reporting limit. The reported value is an estimate.
J = The identification of the analyte is acceptable; the reported value is an estimate.
-------
Table 3-5: Summary of Analytical Results in Air
2019-2020 Annual Report
Cleburn Street Well Superfund Site OU-2, Grand Island, Nebraska
Sample Type
Sample Identification
Tetrachloroethylene (PCE)
(Hg/m3)
Trichloroethylene (TCE)
(Hg/m3)
Vinyl Chloride (VC)
(Hg/m3)
Residential Screening Level: 11 jig/m3
Residential Screening Level: 0.48 jig/m3
Residential Screening Level: 0.17 jig/m3
industrial Screening Level: 47 ng/m3
industrial Screening Level: 3.0 iig/m3
industrial Screening Level: 2.8 iig/m3
Sample Date
Sample Date
Sample Date
Nov 2019c
Feb 2020°
June 2020e
Aug 2020f
Nov 2019c
Feb 2020°
June 2020e
Aug 2020f
Nov 2019c
Feb 2020°
June 2020e
Aug 2020f
Indoor Air
Church-IA
17
*0.34 U
*22
*49
0.27 U
*0.14 U
*0.14
*0.24
0.13 U
*0.13 U
*0.13 U
*0.13 U
Indoor Air
Dent Xpress-IA
3.5
NS
**2.6
0.27 U
NS
**0.14 U
**0.14 U
0.13 U
NS
**0.13 U
**0.13 U
Indoor Air
EPA Treatment Building-IA
16
*7.2
*46
**54
0.27 U
*0.14 U
*0.14 U
**0.14 U
0.13 U
*0.13 U
*0.13 U
**0.13 U
Indoor Air
EPA Treatment Building-IA-FD
16
*7.3
*46
**55
0.27 U
*0.14 U
*0.14 U
**0.14 U
0.13 U
*0.13 U
*0.13 U
**0.13 U
Indoor Air
Miller Tire-IA
6.2
*4.3
*9.0
*6.7
0.27 U
*0.14 U
*0.38
*0.34
0.13 U
*0.13 U
*0.13 U
*0.13 U
Indoor Air
Thrift Store-IA
1.5
*4.0
*3.2
0.27 U
**0.14 U
*0.14 U
*0.14
0.13 U
**0.13 U
*0.13 U
*0.13 U
Outdoor Air
Outdoor-OA
0.34 U
**0.34 U
*0.34 U
**0.34 U
0.27 U
**0.14 U
*0.14 U
**0.14 U
0.13 U
**0.13 U
*0.13 U
**0.13 U
Outdoor Air
Outdoor-OA-FD
NS
**0.34 U
*0.34 U
**0.34 U
NS
**0.14 U
*0.14 U
**0.14 U
NS
**0.13 U
*0.13 U
**0.13 U
Soil Vapor
Church-SV
16
*0.86
*160
*480
0.27 U
*0.14 U
*0.62
*2.0
0.22
*0.13 U
*0.13 U
*0.13 U
Soil Vapor
Clark Services-SV
7.4
*2.1
**19
*170
0.27 U
*0.38
**0.14 U
*0.17
0.27
*0.13 U
**0.13 U
*0.13 U
Soil Vapor
Dent Xpress-SV
18
NS
**1900
**1700
0.35
NS
**1.8
**5.0
0.26
NS
**0.13 U
**1.3 U
Soil Vapor
EPA Treatment Building-SV
140
*
00
*760
**10000
4.2
*0.31
*7.3
**46
0.13 U
*0.13 U
*0.13 U
**0.13 U
Soil Vapor
EPA Treatment Building-SV-FD
100
*8.4
*730
**8900
3.5
*0.33
*6.5
**42
0.13 U
*0.13 U
*0.13 U
**0.13 U
Soil Vapor
Miller Tire-SV
13
*63
*8300
*2800
0.27 U
*0.63
*6.3
*4.9
0.13 U
*0.13 U
*0.13 U
*1.3 U
Soil Vapor
Thrift Store-SV
3.5
**2 2
*5.3
*7.5
0.27 U
**0.14 U
*0.14 U
*0.23
0.22
**0.13 U
*0.13 U
*0.13 U
Notes:
A) The Residential Screening Levels for PCE, TCE, and VC are based on the most recent United States Environmental Protections Agency's Regional Screening Level (RSL) for Residential Air; TR=lE-06, HQ=1.0 (November 2019).
B) The Industrial Screening Levels for PCE, TCE, and VC are based on the most recent United States Environmental Protection Agency's Regional Screening Level (RSL) for Industrial Air; TR=lE-06, HQ=1.0 (November 2019).
C) Sampling period for Nov 2019: 05 November 2019 through 06 November 2019
D) Sampling period for Feb 2020: *04 February 2020 through 05 February 2020 OR **05 February 2020 through 06 February 2020
E) Sampling period for June 2020: *01 June 2020 through 03 June 2020 OR **02 June 2020 through 03 June 2020
F) Sampling period for August 2020: *24 August 2020 through 25 August 2020 OR **25 August 2020 through 26 August 2020
NS = Not Sampled
pig/m3 = micrograms per cubic meter
Bold text indicates analyte detected above the laboratory reporting limit
Result exceeds the Industrial Screening Level
Result exceeds the Residential Screening Level
Lab Flag:
U = The analyte was not detected at or above the reporting limit.
-------
Table 3-6: Relative Percent Differences
2019-2020 Annual Report
Cleburn Street Well Superfund Site OU-2, Grand Island, Nebraska
Matrix
Sample
Identification
Tetrachloroethylene (PCE)
Trichloroethylene (TCE)
Vinyl Chloride (VC)
Samp
e Date
Samp
e Date
Sample Date
Nov 2019
Feb 2020
June 2020
Aug 2020
Nov 2019
Feb 2020
June 2020
Aug 2020
Nov 2019
Feb 2020
June 2020
Aug 2020
Analytical
Result
RPD
Analytical
Result
RPD
Analytical
Result
RPD
Analytical
Result
RPD
Analytical
Result
RPD
Analytical
Result
RPD
Analytical
Result
RPD
Analytical
Result
RPD
Analytical
Result
RPD
Analytical
Result
RPD
Analytical
Result
RPD
Analytical
Result
RPD
Shallow
Groundwater
EM-MW01S
2.5
4.1%
2.7
NA
4.8
NA
2.1
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
EM-MW01S-FD
2.4
NS
NS
NS
1.0 u
NS
NS
NS
1.0 u
NS
NS
NS
Shallow
Groundwater
EM-MW02S
74 J
2.7%
68
0.0%
190
5.1%
1600
6.1%
1.0 UJ
NA
1.0 U
NA
1.0 U
NA
2.1
4.7%
1.0 UJ
NA
1.0 U
NA
1.0 U
NA
1.0 U
NA
EM-MW02S-FD
76 J
68
200
1700
1.0 UJ
1.0 U
1.0 U
2.2
1.0 UJ
1.0 U
1.0 U
1.0 U
Intermediate
Groundwater
EM-MW01D
1.6
NA
1.0
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 U
NA
1.0 U
NA
1.0 U
NA
1.0 u
NA
1.0 U
NA
1.0 U
NA
1.0 U
NA
EM-MW01D-FD
NS
1.0 U
1.0 u
1.0 u
NS
1.0 U
1.0 U
1.0 u
NS
1.0 U
1.0 U
1.0 U
Intermediate
Groundwater
MW-2019-1B
1.8
5.7%
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
1.0 u
NA
MW-2019-1B-FD
1.7
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
Indoor Air
EPA Treatment
Building-IA
16
0.0%
7.2
1.4%
46
0.0%
54
1.8%
0.27 U
NA
0.14 U
NA
0.14 U
NA
0.14 U
NA
0.13 U
NA
0.13 U
NA
0.13 U
NA
0.13 U
NA
EPA Treatment
Building-IA-FD
16
7.3
46
55
0.27 U
0.14 U
0.14 U
0.14 U
0.13 U
0.13 U
0.13 U
0.13 U
Outdoor Air
Outdoor-OA
0.34 U
NA
0.34 U
NA
0.34 U
NA
0.34 U
NA
0.27 U
NA
0.14 U
NA
0.14 U
NA
0.14 U
NA
0.13 U
NA
0.13 U
NA
0.13 U
NA
0.13 U
NA
Outdoor-OA-FD
NS
0.34 U
0.34 U
0.34 U
NS
0.14 U
0.14 U
0.14 U
NS
0.13 U
0.13 U
0.13 U
Sub-Slab Vapor
EPA Treatment
Building-SV
140
33.3%
8.4
0.0%
760
4.0%
10000
11.6%
4.2
18.2%
0.31
6.3%
7.3
11.6%
46
9.1%
0.13 U
NA
0.13 U
NA
0.13 U
NA
0.13 U
NA
EPA Treatment
Building-SV-FD
100
8.4
730
8900
3.5
0.33
6.5
42
0.13 U
0.13 U
0.13 U
0.13 U
Notes:
1) The relative precent difference was only calculated for results greater than the reporting limit.
2) RPD = | X - Y | / ((X + Y)/2) X 100%, where X = primary field investigative sample concentration and Y = FD sample concentration.
FD = Field Duplicate
NA = Not Applicable
NS = Not Sampled
RPD = Relative Percent Difference
Hg/L = micrograms per liter
Bold text indicates analyte detected above the laboratory reporting limit
RPD exceeds 30%
Lab Flag:
U = The analyte was not detected at or above the reporting limit.
UJ = The analyte was not detected at or above the reporting limit. The reported value is an estimate.
J = The identification of the analyte is acceptable; the reported value is an estimate.
-------
iu ilio
Final Annual Report for Confirmatory Sampling
Cleburn Street Well Superfund Site Operable Unit 2 (OU-2)
mragement services
APPENDICES
-------
JACOBS
CH2M Kansas City Office
2300 Main Street
Kansas City, MO 64108
0+1816 533 7310
www.jacobs.com
Mr. David Wennerstrom
Remedial Project Manager
Superfund Division
U.S. EPA Region VII
11201 Renner Blvd
Lenexa, KS 66219
June 17, 2019
Subject: MWN-3B Area, Groundwater Investigation Summary Report
GRAND ISLAND, NE - SOLVENT SITE
CLEBURN STREET WELL SUPERFUND SITE (OU5), GRAND ISLAND, NE
USEPA DOCKET NO. 8.02CV368
Dear Mr. Wennerstrom,
On behalf of Union Pacific Railroad (UPRR), Jacobs is providing the Environmental Protection
Agency (EPA) with a summary of the results of the groundwater investigation outlined in the Work
Plan approved by EPA on February 6, 2019, for the Grand Island, NE- OU5 Solvent Site project.
Project Background
Since the late 1990s, UPRR has been monitoring groundwater conditions at the Site on a quarterly
basis including MWN-3B which is located downgradient of the project source area (centered on
monitoring well MWN-10A) (Figure 1). During 2012, groundwater concentrations of PCE at MWN-
3B started to increase above the groundwater remediation goal of 5 micrograms per liter (ng/L)
and were detected a peak concentration of 69.2 ng/L in June 2017. Prior to this, groundwater
concentrations in MWN-3B were generally below the remediation goal for a period of
approximately 13 years.
Because of this increasing trend, the investigation objective was to identify the extent of the
elevated PCE concentrations in the area of MWN-3B and determine whether this is a
downgradient extent of the MWN-10A plume, or if concentrations extend toward a separate
potential source area.
Direct-Push Groundwater Sampling Activities
On April 22, 2019, GSI Engineering, Inc. (GSI) used direct-push technology and advanced 21
borings to collect groundwater grab samples for analysis by Pace Analytical Services for
perchloroethylene (PCE), trichloroethylene (TCE), c/'s-l,2-dichloroethylene (c/'s-l,2-DCE) and vinyl
chloride (VC) by method 8260C. Groundwater was collected by advancing hollow steel rods
directly into the subsurface and retracting the leading probe rod exposing the stainless-steel
Jacobs Engineering Group Inc.
-------
MWN-3B Area, Groundwater Investigation Summary Report
GRAND ISLAND, NE - SOLVENT SITE
screen. Groundwater was sampled through the direct-push rods using a pump and disposable
tubing.
Each of the 21 direct-push borings were advanced to at least 25 feet below ground surface (ft
bgs), thus after exposing the sample screen the depth interval where groundwater was collected
ranged between 21-25 ft bgs. Groundwater samples from the 21-25 foot interval represent data
collected from the shallow interval. At six locations (B2, B7, B12, B15, B18 and B19) the borings
were advanced deeper to a depth of 45 ft bgs. Groundwater samples from the 41-45 foot interval
represent data collected from the deep interval. Following the collection of the groundwater
samples, all direct push borings were plugged with granular bentonite and hydrated consistent
with Nebraska plugging and abandonment regulations.
Groundwater Analytical Results
A total of 27 groundwater grab groundwater samples were collected from the area surrounding
MWN-3A/MWN-3B. Additionally, quality assurance and quality control (QA/QC) samples were
collected and included a field duplicate and equipment blank. Two trip blank samples were
submitted and accompanied each sample cooler. The groundwater samples were collected in
preserved containers provided by Pace Analytical Services. All the borings were advanced in the
area surrounding MWN-3B as planned; however, based on the presence of underground utilities
some locations were slightly shifted during the field event.
PCE
Concentrations of PCE in groundwater were detected at 20 locations above the reporting limit.
The detected concentrations of PCE in groundwater range from 5.4 to 54.6 ng/L in the shallow
borings locations at B2, B5 through B14, B17, B18 and B19 which exceed the maximum
contaminant level (MCL) of 5.0 ng/L. A concentration of PCE in the deep sample interval at boring
B19 was detected at 6.5 ng/L.
TCE
Concentrations of TCE in groundwater were detected at 16 locations above the reporting limit.
The detected concentrations of TCE in groundwater range from 12.1 to 48.4 ng/L in the shallow
borings at B6, B7, B9, BIO, B12, B13 and B18 which exceed the MCL of 5.0 ng/L. Concentrations of
TCE were not detected in groundwater above the MCL in the deep sample intervals.
Cis-1,2-DCE
Concentrations of c/'s- 1,2-DCE in groundwater were detected at 12 locations above the reporting
limit. The detected concentrations of c/'s- 1,2-DCE in groundwater range from 117 to 182 ng/L in
the shallow borings at BIO and B13 which exceed the MCL of 70 ng/L. Concentrations of c/'s- 1,2-
DCE were not detected in groundwater above the MCL in the deep sample intervals.
-------
MWN-3B Area, Groundwater Investigation Summary Report
GRAND ISLAND, NE - SOLVENT SITE
Vinyl Chloride
Concentrations of VC in groundwater were detected at four locations above the reporting limit.
The detected concentrations of VC in groundwater range from 0.13 to 4.4 ng/L in the shallow
borings. A VC concentration of 4.4 ng/L at boring B9 exceeds the MCL value of 2 ng/L.
Concentrations of VC were not detected in groundwater above the reporting limit in the deep
sample intervals.
The laboratory analytical results are summarized in Table 1. Figure 2 summarizes the PCE
concentrations in groundwater. Figure 3 summarizes the TCE concentrations in groundwater.
Figure 4 summarizes the c/'s- 1,2-DCE in groundwater. Figure 5 summarizes the VC concentrations
in groundwater.
The laboratory analytical report and data validation memorandum are provided in Attachment A.
The data was determined to be acceptable without additional qualification.
Conclusions
Based on collection of grab groundwater in locations proximal to MWN-3B, the following
conclusions are reached:
• Groundwater concentrations that exceed the MCLs appear centered around the former
warehouse building. The groundwater concentrations in the vicinity of the former
warehouse building that exceed the MCLs do not appear to extend beyond the UPRR
property boundary.
• Groundwater concentrations of PCE, TCE, and c/'s- 1,2-DCE that exceed the MCLs are in the
vicinity of MWN-3B and have been defined.
• Concentrations of vinyl chloride in groundwater have been delineated. Vinyl chloride
concentrations in groundwater that exceed the MCL are isolated to boring B9.
• Concentrations of PCE and TCE exceed the MCL in shallow groundwater (21-25 ft bgs) and
are centralized near the former warehouse building. Groundwater concentrations of PCE
and TCE are the highest at borings B9 and B13. B9 is located north-northwest of the
former warehouse building and B13 is south-southeast of the building. Boring B9 and B13
are closest in proximity to the former warehouse building.
• Concentrations of c/'s- 1,2-DCE exceed the MCL in shallow groundwater and are centralized
at borings BIO, B13, and monitoring well MWN-3B, south and east of the former
warehouse building.
• Concentrations of PCE in deep groundwater (41-45 ft bgs) exceed the MCL downgradient
of the warehouse building at B19 and is isolated to the area surrounding B19. No deep
groundwater samples for TCE or c/'s- 1,2-DCE exceeded the MCLs.
3
-------
MWN-3B Area, Groundwater Investigation Summary Report
GRAND ISLAND, NE - SOLVENT SITE
Based on the results of the investigation, concentrations of PCE, TCE and Cis-1,2-DCE appear
separated from the original source area at MWN-10A. With this completed, the UPRR project
team will be evaluating remedial action alternatives for addressing the groundwater impacts.
If you have questions, please contact me at (816) 533-7310.
Regards,
CH2M HILL Engineers, Inc.
Matthew Sugar
Project Manager
Cc: Kevin Peterburs/UPRR
Hoyt Sutphin/Jacobs
Figure 1 - Site Layout
Figure 2 - PCE Sample Results
Figure 3 - TCE Sample Results
Figure 4 - cis-l,2-DCE Sample Results
Figure 5 - VC Sample Results
Table 1 - Summary of Grab Groundwater Analytical Results - April 2019
Attachment A - Laboratory Analytical and Data Validation Reports
4
-------
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-------
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AWNING
CARLSON
BAR 375 N.
LINCOLN
1007 N.
FRONT
STILLWELL
CHEMICAL
CO.
1001 N.
FRONT
BORING
B17
1.0
BORING
B18
J
CITY UTILITY
DEPT.
S: 10.7
^b4D1 111,1
BORING
819 MWN-6A®©M
ND ND
D: 4.3
BORING
B20
BORING
B21
®MW
ND
ND
ND
o
©
LEGEND
Dl RECT PUSH GROUNDWATER SAMPLE ,
(APRIL 2019)
MARCH 2019 GROUNDWATER SAMPLE
ISOCONCENT RAT IO N CONTOUR
INFERRED ISOCONCENTRATION CONTOUR^
BORING LOCATION
GROUNDWATER SAMPLE COLLECTED AT ,
DEPTHS OF 41-45 FEET
MONITORING WELL
MONITORING POINT
SAN. SEWER DISCHARGE MANHOLE UNION
PACIFIC RIGHT-OF-WAY BOUNDARY
STRUCTURE
® MWN-9
CITY OF GRAND ISLAND
AUTO IMPOUND
PAINT
SHOP
1207 S.
FRONT
NOTES:
Direct push groundwater samples collected as g.
samples
March 2019 groundwater samples collected as
composite samples
Sample results in ug/L.
Well ID - Deeper monitoring well pair
* - Well not used for contouring
S - Shallow sample interval (21-25 feet)
D - Deep sample interval (41-45 feet)
ND - Not Detected above the reporting limit
J - Result is an estimate
W
z
O
I—
o
z
X
§
315 N.
WASHINGTON
320 N.
LINCOLN
CO
O
O
322 N.
GREENWICH
1009 S.
FRONT
315 N.
LINCOLN
CO
X
o
HI
LU
Cd
CD
Figure 3
Trichloroethene (TCE) Sample Results
MWN-3B Direct Push Investigation
Former Nebraska Solvents Site
Grand Island, NE
—JACOBS
-------
1304 N.
FRONT
©MWN-13
CO
CO
5
3
<
THOMPSON
COMPANY
AUTO
GARAGE
1210 N.
FRONT
HI
OCD
^ (5
<<
CD
1204 N.
FRONT/
CO
z
g
CD
z
X
co
<
CITY
ELECTRIC
DEPT.
© MWN-12
1116
N. FRONT
CO
z
_l
o
o
z
336 N.
GREENWICH
CRESCENT
ELECTRICAL
SUPPLY
1204 N.
FRONT
to
X
o
5
z
LU
HI
cd
NORTH FRONT ST.
©MWN-4
\ *
/. CITY ELECTRIC
£ DEPT.
^
//////////////// '////////////////////.
©
MWN-2
'////////////A
FORMER NEBRASKA
SOLVENT LEASE
7777777777777777777777777777777777/
CITY STREET
DEPT.
V////////////////////////////////Z
FUEL
PUMPS
FORMER
LINCOLN ST.:
WELL -$-¦
BORING BORING
68 #
ND
BORING
811 ^
BORING
B12
S: 13.1 1
D: 0.99 J
J 17
25.1 5:1
D: tp
FORMER '/
v WAREHOUSE /
///////////A
BORING
813 $$¦
"l 82
BORING
^B14
ND
UNION PACIFIC RAILROAD
BORING
B15 iN
S:
D:
ND
MWN-3B
7~W
rlJD
.1
ft MWN-5
® ND
BORING
B16
%JD
GLASS
AWNING
CARLSON
BAR 375 N.
LINCOLN
1007 N.
FRONT
STILLWELL
CHEMICAL
CO.
1001 N.
FRONT
BORING
B17
ND
B18
I
J
CITY UTILITY
DEPT.
BORING
ND
D: 7.1
MWN-6A®®'
ND
BORING
B20
BORING
B21
m
~ MWN-7
8 a in
ND
SOUTH FRONT ST.
LEGEND
Dl RECT PUSH GROUNDWATER SAMPLE
(APRIL 2019)
MARCH 2019 GROUNDWATER SAMPLE
ISOCONCENT RAT IO N CONTOUR
INFERRED ISOCONCENTRATION CONTOUR^
INFERRED DEEP INTERVAL (41-45 FEET) '
ISOCONCENTRATION CONTOUR
BORING LOCATION
GROUNDWATER SAMPLE COLLECTED AT '
DEPTHS OF 41-45 FEET
MONITORING WELL
MONITORING POINT
SAN. SEWER DISCHARGE MANHOLE
UNION PACIFIC RIGHT-OF-WAY BOUNDARY
,STRUCTURE
® MWN-9
CITY OF GRAND ISLAND
AUTO IMPOUND
PAINT
SHOP
1207 S.
FRONT
NOTES:
Direct push groundwater samples collected as grab
samples
March 2019 groundwater samples collected as
composite samples
Sample results in ug/L.
Well ID - Deeper monitoring well pair
*- Well not used for contouring
S - Shallow sample interval (21-25 feet)
D - Deep sample interval (41-45 feet)
ND - Not Detected above the reporting limit
J - Result is an estimate
W
z
O
I—
o
z
X
§
315 N.
WASHINGTON
320 N.
LINCOLN
CO
O
O
315 N.
LINCOLN
322 N.
GREENWICH
1009 S.
FRONT
CO
x
o
HI
LU
Cd
CD
Figure 4
cis-1,2-Dichloroethene (DCE) Sample Results
MWN-3B Direct Push Investigation
Former Nebraska Solvents Site Grand
Island, NE
JACOBS
-------
1304 N.
FRONT
©MWN-13
CO
CO
5
3
<
THOMPSON
COMPANY
AUTO
GARAGE
1210 N.
FRONT
HI
OCD
^ (5
<<
CD
1204 N.
FRONT/
CO
z
g
CD
z
X
co
<
CITY
ELECTRIC
DEPT.
® MWN-12
1116
N. FRONT
CO
z
_l
o
o
z
336 N.
GREENWICH
CRESCENT
ELECTRICAL
SUPPLY
1204 N.
FRONT
to
X
o
5
z
LU
LU
o;
cd
NORTH FRONT ST.
©MWN-4
FORMER NEBRASKA
SOLVENT LEASE
y////;//;//;//////////////;///////*
CITY STREET
DEPT.
FUEL
PUMPS
FORMER
LINCOLN ST.:
WELL +¦
V////////////////////////////////A
BORING BORING
BORING
811
BORING
B12
UNION PACIFIC RAILROAD
y///////////.
/. FORMER '/
WAREHOUSE /
///////////Z,
BORING
®B14
MQ
BORING
B15/K
GLASS
go
— CO
is!
5
-------
Table 1
Summary of Grab Groundwater Analytical Results - April 2019
MWN-3B Area - Groundwater Investigation
Cleburn Street Well Superfund Site (OU5), Grand Island, NE
Approx.
Sample Interval
Tetrachloroethene
Trichloroethene
cis-l,2-Dichloroethene
Vinyl Chloride
Sample ID
(feet below ground surface)
Sample Date / Time
Hg/L
Hg/L
Hg/L
Hg/L
Bl-042419
21-25
04/24/2019 08:55
2.0 J
<0.85
<0.85
0.78 J
B2-D-042319
41-45
04/23/2019 15:40
<0.22
<0.17
<0.17
< 0.11
B2-S-042319
21-25
04/23/2019 15:00
5.4
2.9
2.6
< 0.11
B3-042319
21-25
04/23/2019 14:30
2.9
1.9
0.21 J
< 0.11
B4-042419
21-25
04/24/2019 09:55
1.1
<0.17
<0.17
< 0.11
B5-042419
21-25
04/24/2019 09:35
6.4
2.5
1.1
< 0.11
B6-042419
21-25
04/24/2019 08:25
29.8
17.0
18.2
< 0.55
B7-D-042319
41-45
04/23/2019 13:45
1.0 J
0.21 J
0.99 J
< 0.11
B7-S-042319
21-25
04/23/2019 14:10
19.8
13.5
13.1
< 0.55
B8-042419
21-25
04/24/2019 10:45
6.0
0.94 J
<0.17
< 0.11
B9-042419
21-25
04/24/2019 10:20
43.10
24.40
25.10
4.4 J
BIO-042319
21-25
04/23/2019 13:20
13.9
20.0
117
< 0.55
Bll-042419
21-25
04/24/2019 12:20
5.6
1.0
<0.17
< 0.11
B12-D-042419
41-45
04/24/2019 13:05
<0.22
<0.17
<0.17
< 0.11
B12-S-042419
21-25
04/24/2019 12:45
28.9
12.1
10.3
0.13 J
B13-042319
21-25
04/23/2019 13:00
54.6
48.4
182
< 0.11
B14-042419
21-25
04/24/2019 11:10
2.8
<0.17
<0.17
< 0.11
B15-D-042319
41-45
04/23/2019 11:30
0.84 J
0.20 J
9.1
< 0.11
B15-S-042319
21-25
04/23/2019 11:00
<0.22
<0.17
<0.17
< 0.11
B16-042319
21-25
04/23/2019 07:40
2.2
<0.17
<0.17
< 0.11
B17-042319
21-25
04/23/2019 08:10
13.6
1.0
<0.17
< 0.11
B18-D-042319
41-45
04/23/2019 08:40
1.1
<0.17
<0.17
< 0.11
B18-S-042319
21-25
04/23/2019 09:05
17.8
10.7
29.5
< 0.11
B19-D-042319
41-45
04/23/2019 09:40
6.5
4.3
7.1
< 0.11
B19-S-042319
21-25
04/23/2019 10:05
1.6
<0.17
<0.17
< 0.11
B20-042319
21-25
04/23/2019 10:40
<0.22
<0.17
<0.17
< 0.11
B21-042419
21-25
04/24/2019 13:40
0.28 J
<0.17
<0.17
0.18 J
Maximum Contaminant Level
5
5
70
2
Notes:
Hg/L: micrograms per liter
<: indicates analyte was not detected above the method detection limit
J: indicates that analyte concentration is estimated
#/ #: sample result/ duplicate result
Bold results indicate concentrations detected above the method detection limit (MDL)
Grey shading indicates concentrations above the maximum contaminant level (MCL)
-------
Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
May 06, 2019
Matt Sugar
JACOBS
2300 Main St.
Suite 325
Kansas City, MO 64108
RE: Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Dear Matt Sugar:
Enclosed are the analytical results for sample(s) received by the laboratory on April 24, 2019. The
results relate only to the samples included in this report. Results reported herein conform to the most
current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where
applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Angie Brown
angie.brown@pacelabs.com
1(913)563-1402
Project Manager
Enclosures
cc: Artie Wickham, Jacobs
REPORT OF LABORATORY ANALYSIS
^ORAt0^
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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Pace Analytical Services, LLC
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Lenexa, KS 66219
(913)599-5665
CERTIFICATIONS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Kansas Certification IDs
9608 Loiret Boulevard, Lenexa, KS 66219
Arkansas Drinking Water
Missouri Certification Number: 10090
WY STR Certification #: 2456.01
Arkansas Certification #: 19-016-0
Arkansas Drinking Water
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ceAnalytical
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Florida: Cert E871149 SEKS WET
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Kansas Field Laboratory Accreditation: # E-92587
Missouri Certification: 10070
Missouri Certification Number: 10090
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
SAMPLE SUMMARY
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Lab ID Sample ID Matrix Date Collected Date Received
60300753001
B16-042319
Water
04/23/19
07:40
04/24/19 08:25
60300753002
B17-042319
Water
04/23/19
08:10
04/24/19 08:25
60300753003
B18-D-042319
Water
04/23/19
08:40
04/24/19 08:25
60300753004
B18-S-042319
Water
04/23/19
09:05
04/24/19 08:25
60300753005
B19-D-042319
Water
04/23/19
09:40
04/24/19 08:25
60300753006
B19-S-042319
Water
04/23/19
10:05
04/24/19 08:25
60300753007
B20-042319
Water
04/23/19
10:40
04/24/19 08:25
60300753008
B15-S-042319
Water
04/23/19
11:00
04/24/19 08:25
60300753009
B15-D-042319
Water
04/23/19
11:30
04/24/19 08:25
60300753010
B13-042319
Water
04/23/19
13:00
04/24/19 08:25
60300753011
B10-042319
Water
04/23/19
13:20
04/24/19 08:25
60300753012
B7-D-042319
Water
04/23/19
13:45
04/24/19 08:25
60300753013
B7-S-042319
Water
04/23/19
14:10
04/24/19 08:25
60300753014
B3-042319
Water
04/23/19
14:30
04/24/19 08:25
60300753015
B2-S-042319
Water
04/23/19
15:00
04/24/19 08:25
60300753016
B2-D-042319
Water
04/23/19
15:40
04/24/19 08:25
60300753017
TB01-042319
Water
04/23/19
08:20
04/24/19 08:25
ceAnalytical
www.pacelabs.oom
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 3 of 31
-------
iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
SAMPLE ANALYTE COUNT
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Analytes
Lab ID
Sample ID
Method
Analysts
Reported Laboratory
60300753001
B16-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753002
B17-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753003
B18-D-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753004
B18-S-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753005
B19-D-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753006
B19-S-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753007
B20-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753008
B15-S-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753009
B15-D-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753010
B13-042319
EPA 5030B/8260
EMD, PGH
8 PASI-K
60300753011
B10-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753012
B7-D-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753013
B7-S-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753014
B3-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753015
B2-S-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753016
B2-D-042319
EPA 5030B/8260
PGH
8 PASI-K
60300753017
TB01-042319
EPA 5030B/8260
PGH
8 PASI-K
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 4 of 31
-------
Pace Analytical Services, LLC
ice Analytical"
www.psc8ta6s.oom (913)599-5665
SUMMARY OF DETECTION
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Lab Sample ID Client Sample ID
Method Parameters Result Units Report Limit Analyzed Qualifiers
60300753001
B16-042319
EPA 5030B/8260
Tetrachloroethene
2.2
ug/L
1.0
04/27/19 03:09
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 03:09
60300753002
B17-042319
EPA 5030B/8260
Tetrachloroethene
13.6
ug/L
1.0
04/27/19 03:23
EPA 5030B/8260
Trichloroethene
1.0
ug/L
1.0
04/27/19 03:23
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 03:23
60300753003
B18-D-042319
EPA 5030B/8260
Tetrachloroethene
1.1
ug/L
1.0
04/27/19 03:38
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 03:38
60300753004
B18-S-042319
EPA 5030B/8260
cis-1,2-Dichloroethene
29.5
ug/L
1.0
04/27/19 03:52
EPA 5030B/8260
Tetrachloroethene
17.8
ug/L
1.0
04/27/19 03:52
EPA 5030B/8260
Trichloroethene
10.7
ug/L
1.0
04/27/19 03:52
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 03:52
60300753005
B19-D-042319
EPA 5030B/8260
cis-1,2-Dichloroethene
7.1
ug/L
1.0
04/27/19 04:06
EPA 5030B/8260
Tetrachloroethene
6.5
ug/L
1.0
04/27/19 04:06
EPA 5030B/8260
Trichloroethene
4.3
ug/L
1.0
04/27/19 04:06
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 04:06
60300753006
B19-S-042319
EPA 5030B/8260
Tetrachloroethene
1.6
ug/L
1.0
04/27/19 04:21
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 04:21
60300753007
B20-042319
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 04:35
60300753008
B15-S-042319
EPA 5030B/8260
Preservation pH
5.0
0.10
04/27/19 04:49
60300753009
B15-D-042319
EPA 5030B/8260
cis-1,2-Dichloroethene
9.1
ug/L
1.0
04/27/19 05:03
EPA 5030B/8260
Tetrachloroethene
0.84 J
ug/L
1.0
04/27/19 05:03
EPA 5030B/8260
Trichloroethene
0.20J
ug/L
1.0
04/27/19 05:03
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 05:03
60300753010
B13-042319
EPA 5030B/8260
cis-1,2-Dichloroethene
182
ug/L
5.0
05/01/19 16:44
EPA 5030B/8260
Tetrachloroethene
54.6
ug/L
1.0
04/27/19 05:17
EPA 5030B/8260
Trichloroethene
48.4
ug/L
1.0
04/27/19 05:17
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 05:17
60300753011
B10-042319
EPA 5030B/8260
cis-1,2-Dichloroethene
117
ug/L
5.0
04/27/19 06:29
EPA 5030B/8260
Tetrachloroethene
13.9
ug/L
5.0
04/27/19 06:29
EPA 5030B/8260
Trichloroethene
20.0
ug/L
5.0
04/27/19 06:29
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 06:29
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 5 of 31
-------
Pace Analytical Services, LLC
ice Analytical"
www.psc8ta6s.oom (913)599-5665
SUMMARY OF DETECTION
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Lab Sample ID Client Sample ID
Method Parameters Result Units Report Limit Analyzed Qualifiers
60300753012
B7-D-042319
EPA 5030B/8260
cis-1,2-Dichloroethene
0.99J
ug/L
1.0
04/27/19 05:32
EPA 5030B/8260
Tetrachloroethene
1.0J
ug/L
1.0
04/27/19 05:32
EPA 5030B/8260
Trichloroethene
0.21 J
ug/L
1.0
04/27/19 05:32
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 05:32
60300753013
B7-S-042319
EPA 5030B/8260
cis-1,2-Dichloroethene
13.1
ug/L
5.0
04/27/19 06:43
EPA 5030B/8260
Tetrachloroethene
19.8
ug/L
5.0
04/27/19 06:43
EPA 5030B/8260
Trichloroethene
13.5
ug/L
5.0
04/27/19 06:43
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 06:43
60300753014
B3-042319
EPA 5030B/8260
cis-1,2-Dichloroethene
0.21 J
ug/L
1.0
04/27/19 05:46
EPA 5030B/8260
Tetrachloroethene
2.9
ug/L
1.0
04/27/19 05:46
EPA 5030B/8260
Trichloroethene
1.9
ug/L
1.0
04/27/19 05:46
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 05:46
60300753015
B2-S-042319
EPA 5030B/8260
cis-1,2-Dichloroethene
2.6
ug/L
1.0
04/27/19 06:00
EPA 5030B/8260
Tetrachloroethene
5.4
ug/L
1.0
04/27/19 06:00
EPA 5030B/8260
Trichloroethene
2.9
ug/L
1.0
04/27/19 06:00
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 06:00
60300753016
B2-D-042319
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 06:15
60300753017
TB01-042319
EPA 5030B/8260
Preservation pH
1.0
0.10
04/27/19 02:55
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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PROJECT NARRATIVE
Project:
1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Method: EPA 5030B/8260
Description: 8260 MSV
Client: UPRR_Jacobs (KC office)
Date: May 06, 2019
General Information:
17 samples were analyzed for EPA5030B/8260. All samples were received in acceptable condition with any exceptions noted below or
on the chain-of custody and/orthe sample condition upon receipt form (SCUR) attached at the end ofthis report.
pH: Post-analysis pH measurement indicates insufficient VOA sample preservation.
• B15-S-042319 (Lab ID: 60300753008)
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Initial Calibrations (including MS Tune as applicable):
All criteria were within method requirements with any exceptions noted below.
Continuing Calibration:
All criteria were within method requirements with any exceptions noted below.
Internal Standards:
All internal standards were within QC limits with any exceptions noted below.
Surrogates:
All surrogates were within QC limits with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below.
Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below.
QC Batch: 581226
A matrix spike/matrix spike duplicate was not performed due to insufficient sample volume.
Additional Comments:
Analyte Comments:
QC Batch: 581226
1e: Sample was diluted due to the presence of high levels of sediment in the vials.
B10-042319 (Lab ID: 60300753011)
• 4-Bromofluorobenzene (S)
B7-S-042319 (Lab ID: 60300753013)
• 4-Bromofluorobenzene (S)
This data package has been reviewed for quality and completeness and is approved for release.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B16-042319
Lab ID:
60300753001
Collected:
04/23/19 07:40
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 03:09
156-59-2
Tetrachloroethene
2.2
ug/L
1.0
0.22 1
04/27/19 03:09
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 03:09
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 03:09
75-01-4
Surrogates
4-Bromofluorobenzene (S)
98
%
80-120
1
04/27/19 03:09
460-00-4
1,2-Dichloroethane-d4 (S)
104
%
77-122
1
04/27/19 03:09
17060-07-0
Toluene-d8 (S)
100
%
80-120
1
04/27/19 03:09
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 03:09
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B17-042319
Lab ID:
60300753002
Collected:
04/23/19 08:10
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 03:23
156-59-2
Tetrachloroethene
13.6
ug/L
1.0
0.22 1
04/27/19 03:23
127-18-4
Trichloroethene
1.0
ug/L
1.0
0.17 1
04/27/19 03:23
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 03:23
75-01-4
Surrogates
4-Bromofluorobenzene (S)
96
%
80-120
1
04/27/19 03:23
460-00-4
1,2-Dichloroethane-d4 (S)
100
%
77-122
1
04/27/19 03:23
17060-07-0
Toluene-d8 (S)
100
%
80-120
1
04/27/19 03:23
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 03:23
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B18-D-042319
Lab ID:
60300753003
Collected:
04/23/19 08:40
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 03:38
156-59-2
Tetrachloroethene
1.1
ug/L
1.0
0.22 1
04/27/19 03:38
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 03:38
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 03:38
75-01-4
Surrogates
4-Bromofluorobenzene (S)
97
%
80-120
1
04/27/19 03:38
460-00-4
1,2-Dichloroethane-d4 (S)
100
%
77-122
1
04/27/19 03:38
17060-07-0
Toluene-d8 (S)
101
%
80-120
1
04/27/19 03:38
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 03:38
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B18-S-042319
Lab ID:
60300753004
Collected:
04/23/19 09:05
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
29.5
ug/L
1.0
0.17 1
04/27/19 03:52
156-59-2
Tetrachloroethene
17.8
ug/L
1.0
0.22 1
04/27/19 03:52
127-18-4
Trichloroethene
10.7
ug/L
1.0
0.17 1
04/27/19 03:52
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 03:52
75-01-4
Surrogates
4-Bromofluorobenzene (S)
96
%
80-120
1
04/27/19 03:52
460-00-4
1,2-Dichloroethane-d4 (S)
100
%
77-122
1
04/27/19 03:52
17060-07-0
Toluene-d8 (S)
101
%
80-120
1
04/27/19 03:52
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 03:52
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B19-D-042319
Lab ID:
60300753005
Collected:
04/23/19 09:40
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
7.1
ug/L
1.0
0.17 1
04/27/19 04:06
156-59-2
Tetrachloroethene
6.5
ug/L
1.0
0.22 1
04/27/19 04:06
127-18-4
Trichloroethene
4.3
ug/L
1.0
0.17 1
04/27/19 04:06
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 04:06
75-01-4
Surrogates
4-Bromofluorobenzene (S)
99
%
80-120
1
04/27/19 04:06
460-00-4
1,2-Dichloroethane-d4 (S)
98
%
77-122
1
04/27/19 04:06
17060-07-0
Toluene-d8 (S)
97
%
80-120
1
04/27/19 04:06
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 04:06
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B19-S-042319
Lab ID:
60300753006
Collected:
04/23/19 10:05
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 04:21
156-59-2
Tetrachloroethene
1.6
ug/L
1.0
0.22 1
04/27/19 04:21
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 04:21
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 04:21
75-01-4
Surrogates
4-Bromofluorobenzene (S)
97
%
80-120
1
04/27/19 04:21
460-00-4
1,2-Dichloroethane-d4 (S)
105
%
77-122
1
04/27/19 04:21
17060-07-0
Toluene-d8 (S)
98
%
80-120
1
04/27/19 04:21
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 04:21
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B20-042319
Lab ID:
60300753007
Collected:
04/23/19 10:40
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 04:35
156-59-2
Tetrachloroethene
ND
ug/L
1.0
0.22 1
04/27/19 04:35
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 04:35
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 04:35
75-01-4
Surrogates
4-Bromofluorobenzene (S)
96
%
80-120
1
04/27/19 04:35
460-00-4
1,2-Dichloroethane-d4 (S)
102
%
77-122
1
04/27/19 04:35
17060-07-0
Toluene-d8 (S)
102
%
80-120
1
04/27/19 04:35
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 04:35
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
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Pace Analytical Services, LLC
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Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B15-S-042319
Lab ID:
60300753008
Collected:
04/23/19 11:00
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No. Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 04:49
156-59-2
Tetrachloroethene
ND
ug/L
1.0
0.22 1
04/27/19 04:49
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 04:49
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 04:49
75-01-4
Surrogates
4-Bromofluorobenzene (S)
99
%
80-120
1
04/27/19 04:49
460-00-4
1,2-Dichloroethane-d4 (S)
100
%
77-122
1
04/27/19 04:49
17060-07-0
Toluene-d8 (S)
99
%
80-120
1
04/27/19 04:49
2037-26-5
Preservation pH
5.0
0.10
0.10 1
04/27/19 04:49
PH
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B15-D-042319
Lab ID:
60300753009
Collected:
04/23/19 11:30
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
9.1
ug/L
1.0
0.17 1
04/27/19 05:03
156-59-2
Tetrachloroethene
0.84J
ug/L
1.0
0.22 1
04/27/19 05:03
127-18-4
Trichloroethene
0.20J
ug/L
1.0
0.17 1
04/27/19 05:03
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 05:03
75-01-4
Surrogates
4-Bromofluorobenzene (S)
98
%
80-120
1
04/27/19 05:03
460-00-4
1,2-Dichloroethane-d4 (S)
104
%
77-122
1
04/27/19 05:03
17060-07-0
Toluene-d8 (S)
101
%
80-120
1
04/27/19 05:03
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 05:03
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B13-042319
Lab ID:
60300753010
Collected:
04/23/19 13:00
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
182
ug/L
5.0
0.90
5
05/01/19 16:44
156-59-2
Tetrachloroethene
54.6
ug/L
1.0
0.22
1
04/27/19 05:17
127-18-4
Trichloroethene
48.4
ug/L
1.0
0.17
1
04/27/19 05:17
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11
1
04/27/19 05:17
75-01-4
Surrogates
4-Bromofluorobenzene (S)
95
%
80-120
1
04/27/19 05:17
460-00-4
1,2-Dichloroethane-d4 (S)
102
%
77-122
1
04/27/19 05:17
17060-07-0
Toluene-d8 (S)
101
%
80-120
1
04/27/19 05:17
2037-26-5
Preservation pH
1.0
0.10
0.10
1
04/27/19 05:17
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B10-042319
Lab ID:
60300753011
Collected:
04/23/19 13:20
Received: 04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
117
ug/L
5.0
0.85
5
04/27/19 06:29
156-59-2
Tetrachloroethene
13.9
ug/L
5.0
1.1
5
04/27/19 06:29
127-18-4
Trichloroethene
20.0
ug/L
5.0
0.85
5
04/27/19 06:29
79-01-6
Vinyl chloride
ND
ug/L
5.0
0.55
5
04/27/19 06:29
75-01-4
Surrogates
4-Bromofluorobenzene (S)
96
%
80-120
5
04/27/19 06:29
460-00-4 1 e
1,2-Dichloroethane-d4 (S)
96
%
77-122
5
04/27/19 06:29
17060-07-0
Toluene-d8 (S)
99
%
80-120
5
04/27/19 06:29
2037-26-5
Preservation pH
1.0
0.10
0.10
5
04/27/19 06:29
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B7-D-042319
Lab ID:
60300753012
Collected:
04/23/19 13:45
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
0.99J
ug/L
1.0
0.17 1
04/27/19 05:32
156-59-2
Tetrachloroethene
1.0J
ug/L
1.0
0.22 1
04/27/19 05:32
127-18-4
Trichloroethene
0.21J
ug/L
1.0
0.17 1
04/27/19 05:32
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 05:32
75-01-4
Surrogates
4-Bromofluorobenzene (S)
94
%
80-120
1
04/27/19 05:32
460-00-4
1,2-Dichloroethane-d4 (S)
101
%
77-122
1
04/27/19 05:32
17060-07-0
Toluene-d8 (S)
100
%
80-120
1
04/27/19 05:32
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 05:32
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 19 of 31
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B7-S-042319
Lab ID:
60300753013
Collected:
04/23/19 14:10
Received: 04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
13.1
ug/L
5.0
0.85
5
04/27/19 06:43
156-59-2
Tetrachloroethene
19.8
ug/L
5.0
1.1
5
04/27/19 06:43
127-18-4
Trichloroethene
13.5
ug/L
5.0
0.85
5
04/27/19 06:43
79-01-6
Vinyl chloride
ND
ug/L
5.0
0.55
5
04/27/19 06:43
75-01-4
Surrogates
4-Bromofluorobenzene (S)
96
%
80-120
5
04/27/19 06:43
460-00-4 1 e
1,2-Dichloroethane-d4 (S)
102
%
77-122
5
04/27/19 06:43
17060-07-0
Toluene-d8 (S)
100
%
80-120
5
04/27/19 06:43
2037-26-5
Preservation pH
1.0
0.10
0.10
5
04/27/19 06:43
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 20 of 31
-------
iceAnalytical
www.pacelabs.oom
Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B3-042319
Lab ID:
60300753014
Collected:
04/23/19 14:30
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
0.21J
ug/L
1.0
0.17 1
04/27/19 05:46
156-59-2
Tetrachloroethene
2.9
ug/L
1.0
0.22 1
04/27/19 05:46
127-18-4
Trichloroethene
1.9
ug/L
1.0
0.17 1
04/27/19 05:46
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 05:46
75-01-4
Surrogates
4-Bromofluorobenzene (S)
97
%
80-120
1
04/27/19 05:46
460-00-4
1,2-Dichloroethane-d4 (S)
102
%
77-122
1
04/27/19 05:46
17060-07-0
Toluene-d8 (S)
101
%
80-120
1
04/27/19 05:46
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 05:46
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 21 of 31
-------
iceAnalytical
www.pacelabs.oom
Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B2-S-042319
Lab ID:
60300753015
Collected:
04/23/19 15:00
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
2.6
ug/L
1.0
0.17 1
04/27/19 06:00
156-59-2
Tetrachloroethene
5.4
ug/L
1.0
0.22 1
04/27/19 06:00
127-18-4
Trichloroethene
2.9
ug/L
1.0
0.17 1
04/27/19 06:00
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 06:00
75-01-4
Surrogates
4-Bromofluorobenzene (S)
96
%
80-120
1
04/27/19 06:00
460-00-4
1,2-Dichloroethane-d4 (S)
104
%
77-122
1
04/27/19 06:00
17060-07-0
Toluene-d8 (S)
100
%
80-120
1
04/27/19 06:00
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 06:00
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 22 of 31
-------
iceAnalytical
www.pacelabs.oom
Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: B2-D-042319
Lab ID:
60300753016
Collected:
04/23/19 15:40
Received:
04/24/19 08:25
Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 06
15
156-59-2
Tetrachloroethene
ND
ug/L
1.0
0.22 1
04/27/19 06
15
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 06
15
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 06
15
75-01-4
Surrogates
4-Bromofluorobenzene (S)
95
%
80-120
1
04/27/19 06
15
460-00-4
1,2-Dichloroethane-d4 (S)
101
%
77-122
1
04/27/19 06
15
17060-07-0
Toluene-d8 (S)
101
%
80-120
1
04/27/19 06
15
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 06
15
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 23 of 31
-------
iceAnalytical
www.pacelabs.oom
Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Sample: TB01-042319
Lab ID:
60300753017
Collected:
04/23/19 08:20
Received:
04/24/19 08:25 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 02:55
156-59-2
Tetrachloroethene
ND
ug/L
1.0
0.22 1
04/27/19 02:55
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/27/19 02:55
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/27/19 02:55
75-01-4
Surrogates
4-Bromofluorobenzene (S)
96
%
80-120
1
04/27/19 02:55
460-00-4
1,2-Dichloroethane-d4 (S)
103
%
77-122
1
04/27/19 02:55
17060-07-0
Toluene-d8 (S)
99
%
80-120
1
04/27/19 02:55
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/27/19 02:55
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 24 of 31
-------
iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
QUALITY CONTROL DATA
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
QC Batch: 581226 Analysis Method: EPA 5030B/8260
QC Batch Method: EPA5030B/8260 Analysis Description: 8260 MSV Water 10 mL Purge
Associated Lab Samples: 60300753001, 60300753002, 60300753003, 60300753004, 60300753005, 60300753006, 60300753007,
60300753008, 60300753009, 60300753010, 60300753011, 60300753012, 60300753013, 60300753014,
60300753015, 60300753016, 60300753017
METHOD BLANK: 2385115
Associated Lab Samples:
Matrix: Water
60300753001, 60300753002, 60300753003, 60300753004, 60300753005, 60300753006, 60300753007,
60300753008, 60300753009, 60300753010, 60300753011, 60300753012, 60300753013, 60300753014,
60300753015, 60300753016, 60300753017
Blank Reporting
Parameter
Units
Result
Limit
MDL
Analyzed
cis-1,2-Dichloroethene
ug/L
ND
1.0
0.17
04/27/19 02:41
Tetrachloroethene
ug/L
ND
1.0
0.22
04/27/19 02:41
Trichloroethene
ug/L
ND
1.0
0.17
04/27/19 02:41
Vinyl chloride
ug/L
ND
1.0
0.11
04/27/19 02:41
1,2-Dichloroethane-d4 (S)
%
100
77-122
04/27/19 02:41
4-Bromofluorobenzene (S)
%
98
80-120
04/27/19 02:41
Toluene-d8 (S)
%
101
80-120
04/27/19 02:41
Qualifiers
LABORATORY CONTROL SAMPLE: 2385116
Spike LCS LCS % Rec
Parameter
Units
Cone.
Result
% Rec
Limits
cis-1,2-Dichloroethene
ug/L
20
21.1
105
80-120
Tetrachloroethene
ug/L
20
20.6
103
77-121
Trichloroethene
ug/L
20
23.3
117
80-121
Vinyl chloride
ug/L
20
20.4
102
46-162
1,2-Dichloroethane-d4 (S)
%
97
77-122
4-Bromofluorobenzene (S)
%
98
80-120
Toluene-d8 (S)
%
100
80-120
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 05/06/2019 01:52 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 25 of 31
-------
iceAnalytical
www.pacelabs.oom
Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
QUALITY CONTROL DATA
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
QC Batch: 582037
QC Batch Method: EPA5030B/8260
Associated Lab Samples: 60300753010
Analysis Method:
Analysis Description:
EPA 5030B/8260
8260 MSV Water 10 mL Purge
METHOD BLANK: 2388606
Associated Lab Samples: 60300753010
Parameter
Matrix: Water
Units
Blank
Result
Reporting
Limit
MDL
Analyzed
Qualifiers
cis-1,2-Dichloroethene
1,2-Dichloroethane-d4 (S)
4-Bromofluorobenzene (S)
Toluene-d8 (S)
ug/L
%
%
%
ND
104
101
99
1.0
77-122
80-120
80-120
0.15
05/01/19 14:05
05/01/19 14:05
05/01/19 14:05
05/01/19 14:05
LABORATORY CONTROL SAMPLE: 2388607
Spike LCS LCS % Rec
Parameter Units Cone. Result % Rec Limits Qualifiers
cis-1,2-Dichloroethene ug/L 20 18.7 93 80-120
1,2-Dichloroethane-d4 (S) % 104 77-122
4-Bromofluorobenzene (S) % 102 80-120
Toluene-d8 (S) % 98 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2388608 2388609
MS MSD
60300890001 Spike Spike MS MSD MS MSD % Rec Max
Parameter
Units
Result Cone.
Cone.
Result
Result
% Rec
% Rec
Limits RPD
RPD
cis-1,2-Dichloroethene
ug/L
ND 200
200
184
180
92
90
43-152 2
30
1,2-Dichloroethane-d4 (S)
%
106
105
77-122
4-Bromofluorobenzene (S)
%
100
102
80-120
Toluene-d8 (S)
%
100
99
80-120
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 05/06/2019 01:52 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 26 of 31
-------
veAnalytical
www.pacelabs.oom
Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
QUALIFIERS
Project:
1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL-Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
PASI-K Pace Analytical Services - Kansas City
BATCH QUALIFIERS
Batch: 581226
[M5] A matrix spike/matrix spike duplicate was not performed for this batch due to insufficient sample volume.
ANALYTE QUALIFIERS
1e
PH
Sample was diluted due to the presence of high levels of sediment in the vials.
Post-analysis pH measurement indicates insufficient VOA sample preservation.
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 27 of 31
-------
iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: 1555-13 Gl NE-SOLV DIRECT PUSH
Pace Project No.: 60300753
Lab ID
Sample ID
QC Batch Method
QC Batch
60300753001
B16-042319
EPA 5030B/8260
581226
60300753002
B17-042319
EPA 5030B/8260
581226
60300753003
B18-D-042319
EPA 5030B/8260
581226
60300753004
B18-S-042319
EPA 5030B/8260
581226
60300753005
B19-D-042319
EPA 5030B/8260
581226
60300753006
B19-S-042319
EPA 5030B/8260
581226
60300753007
B20-042319
EPA 5030B/8260
581226
60300753008
B15-S-042319
EPA 5030B/8260
581226
60300753009
B15-D-042319
EPA 5030B/8260
581226
60300753010
B13-042319
EPA 5030B/8260
581226
60300753010
B13-042319
EPA 5030B/8260
582037
60300753011
B10-042319
EPA 5030B/8260
581226
60300753012
B7-D-042319
EPA 5030B/8260
581226
60300753013
B7-S-042319
EPA 5030B/8260
581226
60300753014
B3-042319
EPA 5030B/8260
581226
60300753015
B2-S-042319
EPA 5030B/8260
581226
60300753016
B2-D-042319
EPA 5030B/8260
581226
60300753017
TB01-042319
EPA 5030B/8260
581226
Analytical Method
Analytical
Batch
Date: 05/06/2019 01:52 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 28 of 31
-------
/*^c<
face Analytical
/ • m" • • i" ¦ • com
Sample Condition Upon Receipt
UO#:60300753
60300753
Client Name
Courier: FedExp' UPS ~ VIA ~ Clay ~ PEX ~ ECID Pace ~ Xroads ~ Client ~ Other ~
Tracking #: Pace Shipping Label Used? Yes ~ No^ia^
Custody Seal on Cooler/Box Present: Yespf No ~ Seals intact: YeSyEf' No ~
Packing Material: Bubble Wrap ~ Bubble Bags^* Foam ~ None ~ Other ~
Thermometer Used: Type of Ice: Blue None
Cooler Temperature (°C): As-read Ji 7 Corr. Factor g Corrected Q)7
Date and initials of person
examining contents: - // ?ij / /eft"
Chain of Custody present: JZfYes UNo Un/a
/
Chain of Custody relinquished ^Yes Qno CIn/a
Samples arrived within holding time Dno Dn/a
Short Hold Time analyses (<72hr): DYes CUn/a
Rush Turn Around Time requested: DYes £21\io Dn/a
Sufficient volume: J^Yes Dno Dn/a
Correct containers used: ^fVes Dno Dn/a
Pace containers used: 0Yes Dno Dn/a
/
Containers intact: .IzfYes Dno Dn/a
'Jnpreserved 5035A / TX1005/1006 soils frozen in 48hrs? DYes Dno ^Jm/a
/
Filtered volume received for dissolved tests? DYes Dno s0n/a
Sample labels match COC: Date / time / ID / analyses j2>Yes UlNo Dn/a
Samples contain multiple phases? Matrix: DYes 0Ho Dn/a
Containers requiring pH preservation in compliance? DYes Dno jZfhi/A
{HNOa, H2SO4, HCI<2; NaOH>9 Sulfide, NaOH>10 Cyanide)
(Exceptions: VGA, Micro, O&G, KS TPH, OK-DRO)
List sample IDs, volumes, lot #'s of preservative and the
date/time added.
Cyanide water sample checks:
Lead acetate strip turns dark? (Record only) DYes Dno
Potassium iodide test strip turns blue/purple? (Preserve) DYes Dno
Trip Blank present: j^Yes Dno Dn/a
Headspace in VOA vials ( >6mm) DYes ffio Dn/a
Samples from USDA Reaulated Area: State DYes Dno 9^/a
Additional labels attached to 5035A / TX1005 vials in the field? DYes LlNo fro/A
Client Notification/ Resolution:
Person Contacted:
Comments/ Resolution
Copy COC to Client?
Date/Time:
Field Data Required? Y / N
Project Manager Review:
Date:
F-KS-C-003-Rev.11, February 28, 2018
Page 29 of 31
-------
CHAIN-OF-CUSTODY / Analytical Request Document
/ Pace Analytical C^irvof-CiKtody Is a LEGAL DOCUMENT- All relevant fields must be completed accurately.
Section A
Required Client Information:
Section B
Require ^?o -i In «rr~3i on:
Section C
I Page:
nPRK Jacobs
325
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r. To »laiTOj!>-
Copy To. Artie Wick ham
UPRR SysDat
Crd« no 1555-13
svin Peterburs
' Quote
REGULATORY AGENCY
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" PCRA
DRINKING WATER
OTHER
V-nrr?"'-"'! ,,y-T-7rr *•¦¦¦?¦
yflss-.&s ,?¦ '/S-s ,
Project Name
1555-13 Grndlsid
(Requested Due Date/TAT:
Project Number
Pace Profile »:
12397 line 1
Sits Locations
STATE;,
NE
Section D
Required Client Information
(A-Z, 0-9 /
Sample IDs MUST 8E UNIQUE
MATRjX.
CODE
TEft OvV
WT
¦=R WW
. ... .....
P
SOiUSOL
0 SL
OIL
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W'PE
wp
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COMPOSITE
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Preservatives
2|d
Z3 •£'
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Pace Analytical *
CHA1N-0F-CUST0DY / Analytical Request Document
The Chain-of-Custody is a LEGAL DOCUMENT. All relevant fields must be completed accurately.
Section A
Rmjjj whent information:
Section B
Required Project information
"important Note: By signing this form you are accepting Pace's NET 30 day payment terms and agreeing to fate charges of 1.5% per month for any invoices not paid within 30 days.
F-ALL.-Q-020rev.08, 12-0ct-2007
-------
Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
May 07, 2019
Matt Sugar
JACOBS
2300 Main St.
Suite 325
Kansas City, MO 64108
RE: Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Dear Matt Sugar:
Enclosed are the analytical results for sample(s) received by the laboratory on April 25, 2019. The
results relate only to the samples included in this report. Results reported herein conform to the most
current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where
applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Angie Brown
angie.brown@pacelabs.com
1(913)563-1402
Project Manager
Enclosures
cc: Artie Wickham, Jacobs
REPORT OF LABORATORY ANALYSIS
^ORAt0^
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without the written consent of Pace Analytical Services, LLC.
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CERTIFICATIONS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Kansas Certification IDs
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Arkansas Drinking Water
Missouri Certification Number: 10090
WY STR Certification #: 2456.01
Arkansas Certification #: 19-016-0
Arkansas Drinking Water
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Kansas/NELAP Certification #: E-10116
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REPORT OF LABORATORY ANALYSIS
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SAMPLE SUMMARY
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Lab ID Sample ID Matrix Date Collected Date Received
60300880001
TB01-042419
Water
04/24/19 08:25
04/25/19 08:50
60300880002
B6-042419
Water
04/24/19 08:25
04/25/19 08:50
60300880003
B1-042419
Water
04/24/19 08:55
04/25/19 08:50
60300880004
B5-042419
Water
04/24/19 09:35
04/25/19 08:50
60300880005
B4-042419
Water
04/24/19 09:55
04/25/19 08:50
60300880006
B9-042419
Water
04/24/19 10:20
04/25/19 08:50
60300880007
FD01-042419
Water
04/24/19 08:00
04/25/19 08:50
60300880008
B8-042419
Water
04/24/19 10:45
04/25/19 08:50
60300880009
B14-042419
Water
04/24/19 11:10
04/25/19 08:50
60300880010
B11-042419
Water
04/24/19 12:20
04/25/19 08:50
60300880011
B12-S -042419
Water
04/24/19 12:45
04/25/19 08:50
60300880012
B12-D-042419
Water
04/24/19 13:05
04/25/19 08:50
60300880013
B21-042419
Water
04/24/19 13:40
04/25/19 08:50
60300880014
EB01-042419
Water
04/24/19 14:00
04/25/19 08:50
60300880015
IDW01-042419
Water
04/24/19 14:20
04/25/19 08:50
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REPORT OF LABORATORY ANALYSIS
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SAMPLE ANALYTE COUNT
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Analytes
Lab ID
Sample ID
Method
Analysts
Reported Laboratory
60300880001
TB01-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880002
B6-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880003
B1-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880004
B5-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880005
B4-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880006
B9-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880007
FD01-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880008
B8-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880009
B14-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880010
B11-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880011
B12-S -042419
EPA 5030B/8260
PGH
8 PASI-K
60300880012
B12-D-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880013
B21-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880014
EB01-042419
EPA 5030B/8260
PGH
8 PASI-K
60300880015
IDW01-042419
EPA 5030B/8260
PGH
8 PASI-K
REPORT OF LABORATORY ANALYSIS
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Pace Analytical Services, LLC
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SUMMARY OF DETECTION
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Lab Sample ID Client Sample ID
Method Parameters Result Units Report Limit Analyzed Qualifiers
60300880001
TB01-042419
EPA 5030B/8260
Preservation pH
1.0
0.10
04/29/19 22:03
60300880002
B6-042419
EPA 5030B/8260
cis-1,2-Dichloroethene
18.2
ug/L
5.0
04/29/19 22:17
EPA 5030B/8260
Tetrachloroethene
29.8
ug/L
5.0
04/29/19 22:17
EPA 5030B/8260
Trichloroethene
17.0
ug/L
5.0
04/29/19 22:17
EPA 5030B/8260
Preservation pH
1.0
0.10
04/29/19 22:17
60300880003
B1-042419
EPA 5030B/8260
Tetrachloroethene
2.0J
ug/L
5.0
04/29/19 22:31
EPA 5030B/8260
Vinyl chloride
0.78J
ug/L
5.0
04/29/19 22:31
EPA 5030B/8260
Preservation pH
1.0
0.10
04/29/19 22:31
60300880004
B5-042419
EPA 5030B/8260
cis-1,2-Dichloroethene
1.1
ug/L
1.0
04/29/19 22:46
EPA 5030B/8260
Tetrachloroethene
6.4
ug/L
1.0
04/29/19 22:46
EPA 5030B/8260
Trichloroethene
2.5
ug/L
1.0
04/29/19 22:46
EPA 5030B/8260
Preservation pH
1.0
0.10
04/29/19 22:46
60300880005
B4-042419
EPA 5030B/8260
Tetrachloroethene
1.1
ug/L
1.0
04/29/19 23:00
EPA 5030B/8260
Preservation pH
1.0
0.10
04/29/19 23:00
60300880006
B9-042419
EPA 5030B/8260
cis-1,2-Dichloroethene
24.6
ug/L
5.0
04/29/19 23:14
EPA 5030B/8260
Tetrachloroethene
40.4
ug/L
5.0
04/29/19 23:14
EPA 5030B/8260
Trichloroethene
22.2
ug/L
5.0
04/29/19 23:14
EPA 5030B/8260
Preservation pH
1.0
0.10
04/29/19 23:14
60300880007
FD01-042419
EPA 5030B/8260
cis-1,2-Dichloroethene
25.1
ug/L
5.0
04/29/19 23:28
EPA 5030B/8260
Tetrachloroethene
43.1
ug/L
5.0
04/29/19 23:28
EPA 5030B/8260
Trichloroethene
24.4
ug/L
5.0
04/29/19 23:28
EPA 5030B/8260
Vinyl chloride
4.4J
ug/L
5.0
04/29/19 23:28
EPA 5030B/8260
Preservation pH
1.0
0.10
04/29/19 23:28
60300880008
B8-042419
EPA 5030B/8260
Tetrachloroethene
6.0
ug/L
1.0
04/29/19 23:42
EPA 5030B/8260
Trichloroethene
0.94 J
ug/L
1.0
04/29/19 23:42
EPA 5030B/8260
Preservation pH
1.0
0.10
04/29/19 23:42
60300880009
B14-042419
EPA 5030B/8260
Tetrachloroethene
2.8
ug/L
1.0
04/29/19 23:56
EPA 5030B/8260
Preservation pH
1.0
0.10
04/29/19 23:56
60300880010
B11-042419
EPA 5030B/8260
Tetrachloroethene
5.6
ug/L
1.0
04/30/19 00:10
EPA 5030B/8260
Trichloroethene
1.0
ug/L
1.0
04/30/19 00:10
EPA 5030B/8260
Preservation pH
1.0
0.10
04/30/19 00:10
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
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SUMMARY OF DETECTION
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Lab Sample ID Client Sample ID
Method Parameters Result Units Report Limit Analyzed Qualifiers
60300880011
B12-S-042419
EPA 5030B/8260
cis-1,2-Dichloroethene
10.3
ug/L
1.0
04/30/19 00:25
EPA 5030B/8260
Tetrachloroethene
28.9
ug/L
1.0
04/30/19 00:25
EPA 5030B/8260
Trichloroethene
12.1
ug/L
1.0
04/30/19 00:25
EPA 5030B/8260
Vinyl chloride
0.13J
ug/L
1.0
04/30/19 00:25
EPA 5030B/8260
Preservation pH
1.0
0.10
04/30/19 00:25
60300880012
B12-D-042419
EPA 5030B/8260
Preservation pH
1.0
0.10
04/30/19 00:39
60300880013
B21-042419
EPA 5030B/8260
Tetrachloroethene
0.28J
ug/L
1.0
04/30/19 00:53
EPA 5030B/8260
Vinyl chloride
0.18J
ug/L
1.0
04/30/19 00:53
EPA 5030B/8260
Preservation pH
1.0
0.10
04/30/19 00:53
60300880014
EB01-042419
EPA 5030B/8260
Preservation pH
1.0
0.10
04/30/19 01:07
60300880015
IDW01-042419
EPA 5030B/8260
cis-1,2-Dichloroethene
0.56J
ug/L
1.0
04/30/19 01:22
EPA 5030B/8260
Tetrachloroethene
0.39J
ug/L
1.0
04/30/19 01:22
EPA 5030B/8260
Preservation pH
1.0
0.10
04/30/19 01:22
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
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PROJECT NARRATIVE
Project:
1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Method: EPA 5030B/8260
Description: 8260 MSV
Client: UPRR_Jacobs (KC office)
Date: May 07, 2019
General Information:
15 samples were analyzed for EPA5030B/8260. All samples were received in acceptable condition with any exceptions noted below or
on the chain-of custody and/orthe sample condition upon receipt form (SCUR) attached at the end ofthis report.
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Initial Calibrations (including MS Tune as applicable):
All criteria were within method requirements with any exceptions noted below.
Continuing Calibration:
All criteria were within method requirements with any exceptions noted below.
Internal Standards:
All internal standards were within QC limits with any exceptions noted below.
Surrogates:
All surrogates were within QC limits with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below.
Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below.
Additional Comments:
Analyte Comments:
QC Batch: 581604
1e: Sample was diluted due to the presence of high levels of sediment in the vials.
B1-042419 (Lab ID: 60300880003)
• 4-Bromofluorobenzene (S)
B6-042419 (Lab ID: 60300880002)
• 4-Bromofluorobenzene (S)
B9-042419 (Lab ID: 60300880006)
• 4-Bromofluorobenzene (S)
FD01-042419 (Lab ID: 60300880007)
• 4-Bromofluorobenzene (S)
MS (Lab ID: 2386704)
• 4-Bromofluorobenzene (S)
REPORT OF LABORATORY ANALYSIS
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Pace Analytical Services, LLC
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Lenexa, KS 66219
(913)599-5665
PROJECT NARRATIVE
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Method: EPA 5030B/8260
Description: 8260 MSV
Client: UPRR_Jacobs (KC office)
Date: May 07, 2019
Analyte Comments:
QC Batch: 581604
1e: Sample was diluted due to the presence of high levels of sediment in the vials.
• MSD (Lab ID: 2386705)
• 4-Bromofluorobenzene (S)
This data package has been reviewed for quality and completeness and is approved for release.
ceAnalytical
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REPORT OF LABORATORY ANALYSIS
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iceAnalytical
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Pace Analytical Services, LLC
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Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: TB01-042419
Lab ID:
60300880001
Collected:
04/24/19 08:25
Received:
04/25/19 08:50 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/29/19 22:03
156-59-2
Tetrachloroethene
ND
ug/L
1.0
0.22 1
04/29/19 22:03
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/29/19 22:03
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/29/19 22:03
75-01-4
Surrogates
4-Bromofluorobenzene (S)
101
%
80-120
1
04/29/19 22:03
460-00-4
1,2-Dichloroethane-d4 (S)
102
%
77-122
1
04/29/19 22:03
17060-07-0
Toluene-d8 (S)
100
%
80-120
1
04/29/19 22:03
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/29/19 22:03
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
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ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B6-042419
Lab ID:
60300880002
Collected:
04/24/19 08:25
Received: 04/25/19 08:50
Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
18.2
ug/L
5.0
0.85
5
04/29/19 22
17
156-59-2
Tetrachloroethene
29.8
ug/L
5.0
1.1
5
04/29/19 22
17
127-18-4
Trichloroethene
17.0
ug/L
5.0
0.85
5
04/29/19 22
17
79-01-6
Vinyl chloride
ND
ug/L
5.0
0.55
5
04/29/19 22
17
75-01-4
Surrogates
4-Bromofluorobenzene (S)
100
%
80-120
5
04/29/19 22
17
460-00-4 1 e
1,2-Dichloroethane-d4 (S)
99
%
77-122
5
04/29/19 22
17
17060-07-0
Toluene-d8 (S)
102
%
80-120
5
04/29/19 22
17
2037-26-5
Preservation pH
1.0
0.10
0.10
5
04/29/19 22
17
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 10 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
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ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B1-042419
Lab ID:
60300880003
Collected:
04/24/19 08:55
Received: 04/25/19 08:50 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
5.0
0.85
5
04/29/19 22:31
156-59-2
Tetrachloroethene
2.0J
ug/L
5.0
1.1
5
04/29/19 22:31
127-18-4
Trichloroethene
ND
ug/L
5.0
0.85
5
04/29/19 22:31
79-01-6
Vinyl chloride
0.78J
ug/L
5.0
0.55
5
04/29/19 22:31
75-01-4
Surrogates
4-Bromofluorobenzene (S)
96
%
80-120
5
04/29/19 22:31
460-00-4 1 e
1,2-Dichloroethane-d4 (S)
102
%
77-122
5
04/29/19 22:31
17060-07-0
Toluene-d8 (S)
100
%
80-120
5
04/29/19 22:31
2037-26-5
Preservation pH
1.0
0.10
0.10
5
04/29/19 22:31
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 11 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B5-042419
Lab ID:
60300880004
Collected:
04/24/19 09:35
Received:
04/25/19 08:50 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
1.1
ug/L
1.0
0.17 1
04/29/19 22:46
156-59-2
Tetrachloroethene
6.4
ug/L
1.0
0.22 1
04/29/19 22:46
127-18-4
Trichloroethene
2.5
ug/L
1.0
0.17 1
04/29/19 22:46
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/29/19 22:46
75-01-4
Surrogates
4-Bromofluorobenzene (S)
99
%
80-120
1
04/29/19 22:46
460-00-4
1,2-Dichloroethane-d4 (S)
100
%
77-122
1
04/29/19 22:46
17060-07-0
Toluene-d8 (S)
100
%
80-120
1
04/29/19 22:46
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/29/19 22:46
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 12 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
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ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B4-042419
Lab ID:
60300880005
Collected:
04/24/19 09:55
Received:
04/25/19 08:50 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/29/19 23:00
156-59-2
Tetrachloroethene
1.1
ug/L
1.0
0.22 1
04/29/19 23:00
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/29/19 23:00
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/29/19 23:00
75-01-4
Surrogates
4-Bromofluorobenzene (S)
99
%
80-120
1
04/29/19 23:00
460-00-4
1,2-Dichloroethane-d4 (S)
99
%
77-122
1
04/29/19 23:00
17060-07-0
Toluene-d8 (S)
99
%
80-120
1
04/29/19 23:00
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/29/19 23:00
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B9-042419
Lab ID:
60300880006
Collected:
04/24/19 10:20
Received: 04/25/19 08:50
Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
24.6
ug/L
5.0
0.85
5
04/29/19 23
14
156-59-2
Tetrachloroethene
40.4
ug/L
5.0
1.1
5
04/29/19 23
14
127-18-4
Trichloroethene
22.2
ug/L
5.0
0.85
5
04/29/19 23
14
79-01-6
Vinyl chloride
ND
ug/L
5.0
0.55
5
04/29/19 23
14
75-01-4
Surrogates
4-Bromofluorobenzene (S)
99
%
80-120
5
04/29/19 23
14
460-00-4 1 e
1,2-Dichloroethane-d4 (S)
100
%
77-122
5
04/29/19 23
14
17060-07-0
Toluene-d8 (S)
102
%
80-120
5
04/29/19 23
14
2037-26-5
Preservation pH
1.0
0.10
0.10
5
04/29/19 23
14
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 14 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: FD01-042419
Lab ID:
60300880007
Collected:
04/24/19 08:00
Received: 04/25/19 08:50 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
25.1
ug/L
5.0
0.85
5
04/29/19 23:28
156-59-2
Tetrachloroethene
43.1
ug/L
5.0
1.1
5
04/29/19 23:28
127-18-4
Trichloroethene
24.4
ug/L
5.0
0.85
5
04/29/19 23:28
79-01-6
Vinyl chloride
4.4J
ug/L
5.0
0.55
5
04/29/19 23:28
75-01-4
Surrogates
4-Bromofluorobenzene (S)
97
%
80-120
5
04/29/19 23:28
460-00-4 1 e
1,2-Dichloroethane-d4 (S)
105
%
77-122
5
04/29/19 23:28
17060-07-0
Toluene-d8 (S)
98
%
80-120
5
04/29/19 23:28
2037-26-5
Preservation pH
1.0
0.10
0.10
5
04/29/19 23:28
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 15 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B8-042419
Lab ID:
60300880008
Collected:
04/24/19 10:45
Received:
04/25/19 08:50 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/29/19 23:42
156-59-2
Tetrachloroethene
6.0
ug/L
1.0
0.22 1
04/29/19 23:42
127-18-4
Trichloroethene
0.94J
ug/L
1.0
0.17 1
04/29/19 23:42
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/29/19 23:42
75-01-4
Surrogates
4-Bromofluorobenzene (S)
99
%
80-120
1
04/29/19 23:42
460-00-4
1,2-Dichloroethane-d4 (S)
101
%
77-122
1
04/29/19 23:42
17060-07-0
Toluene-d8 (S)
100
%
80-120
1
04/29/19 23:42
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/29/19 23:42
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 16 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B14-042419
Lab ID:
60300880009
Collected:
04/24/19 11:10
Received:
04/25/19 08:50 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/29/19 23:56
156-59-2
Tetrachloroethene
2.8
ug/L
1.0
0.22 1
04/29/19 23:56
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/29/19 23:56
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/29/19 23:56
75-01-4
Surrogates
4-Bromofluorobenzene (S)
98
%
80-120
1
04/29/19 23:56
460-00-4
1,2-Dichloroethane-d4 (S)
101
%
77-122
1
04/29/19 23:56
17060-07-0
Toluene-d8 (S)
100
%
80-120
1
04/29/19 23:56
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/29/19 23:56
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 17 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B11-042419
Lab ID:
60300880010
Collected:
04/24/19 12:20
Received:
04/25/19 08:50
Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/30/19 00
10
156-59-2
Tetrachloroethene
5.6
ug/L
1.0
0.22 1
04/30/19 00
10
127-18-4
Trichloroethene
1.0
ug/L
1.0
0.17 1
04/30/19 00
10
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/30/19 00
10
75-01-4
Surrogates
4-Bromofluorobenzene (S)
98
%
80-120
1
04/30/19 00
10
460-00-4
1,2-Dichloroethane-d4 (S)
100
%
77-122
1
04/30/19 00
10
17060-07-0
Toluene-d8 (S)
102
%
80-120
1
04/30/19 00
10
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/30/19 00
10
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 18 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B12-S-042419
Lab ID:
60300880011
Collected:
04/24/19 12:45
Received:
04/25/19 08:50 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
10.3
ug/L
1.0
0.17 1
04/30/19 00:25
156-59-2
Tetrachloroethene
28.9
ug/L
1.0
0.22 1
04/30/19 00:25
127-18-4
Trichloroethene
12.1
ug/L
1.0
0.17 1
04/30/19 00:25
79-01-6
Vinyl chloride
0.13J
ug/L
1.0
0.11 1
04/30/19 00:25
75-01-4
Surrogates
4-Bromofluorobenzene (S)
98
%
80-120
1
04/30/19 00:25
460-00-4
1,2-Dichloroethane-d4 (S)
101
%
77-122
1
04/30/19 00:25
17060-07-0
Toluene-d8 (S)
99
%
80-120
1
04/30/19 00:25
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/30/19 00:25
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 19 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B12-D-042419
Lab ID:
60300880012
Collected:
04/24/19 13:05
Received:
04/25/19 08:50 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/30/19 00:39
156-59-2
Tetrachloroethene
ND
ug/L
1.0
0.22 1
04/30/19 00:39
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/30/19 00:39
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/30/19 00:39
75-01-4
Surrogates
4-Bromofluorobenzene (S)
99
%
80-120
1
04/30/19 00:39
460-00-4
1,2-Dichloroethane-d4 (S)
101
%
77-122
1
04/30/19 00:39
17060-07-0
Toluene-d8 (S)
102
%
80-120
1
04/30/19 00:39
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/30/19 00:39
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 20 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: B21-042419
Lab ID:
60300880013
Collected:
04/24/19 13:40
Received:
04/25/19 08:50 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/30/19 00:53
156-59-2
Tetrachloroethene
0.28J
ug/L
1.0
0.22 1
04/30/19 00:53
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/30/19 00:53
79-01-6
Vinyl chloride
0.18J
ug/L
1.0
0.11 1
04/30/19 00:53
75-01-4
Surrogates
4-Bromofluorobenzene (S)
97
%
80-120
1
04/30/19 00:53
460-00-4
1,2-Dichloroethane-d4 (S)
104
%
77-122
1
04/30/19 00:53
17060-07-0
Toluene-d8 (S)
98
%
80-120
1
04/30/19 00:53
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/30/19 00:53
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 21 of 29
-------
iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: EB01-042419
Lab ID:
60300880014
Collected:
04/24/19 14:00
Received:
04/25/19 08:50
Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
ND
ug/L
1.0
0.17 1
04/30/19 01
07
156-59-2
Tetrachloroethene
ND
ug/L
1.0
0.22 1
04/30/19 01
07
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/30/19 01
07
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/30/19 01
07
75-01-4
Surrogates
4-Bromofluorobenzene (S)
99
%
80-120
1
04/30/19 01
07
460-00-4
1,2-Dichloroethane-d4 (S)
102
%
77-122
1
04/30/19 01
07
17060-07-0
Toluene-d8 (S)
101
%
80-120
1
04/30/19 01
07
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/30/19 01
07
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 22 of 29
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iceAnalytical
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Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
ANALYTICAL RESULTS
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Sample: IDW01-042419
Lab ID:
60300880015
Collected:
04/24/19 14:20
Received:
04/25/19 08:50
Matrix: Water
Report
Parameters
Results
Units
Limit
MDL DF
Prepared
Analyzed
CAS No.
Qual
8260 MSV
Analytical Method: EPA5030B/8260
cis-1,2-Dichloroethene
0.56J
ug/L
1.0
0.17 1
04/30/19 01
22
156-59-2
Tetrachloroethene
0.39J
ug/L
1.0
0.22 1
04/30/19 01
22
127-18-4
Trichloroethene
ND
ug/L
1.0
0.17 1
04/30/19 01
22
79-01-6
Vinyl chloride
ND
ug/L
1.0
0.11 1
04/30/19 01
22
75-01-4
Surrogates
4-Bromofluorobenzene (S)
97
%
80-120
1
04/30/19 01
22
460-00-4
1,2-Dichloroethane-d4 (S)
102
%
77-122
1
04/30/19 01
22
17060-07-0
Toluene-d8 (S)
98
%
80-120
1
04/30/19 01
22
2037-26-5
Preservation pH
1.0
0.10
0.10 1
04/30/19 01
22
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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Lenexa, KS 66219
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QUALITY CONTROL DATA
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
QC Batch: 581604 Analysis Method: EPA 5030B/8260
QC Batch Method: EPA5030B/8260 Analysis Description: 8260 MSV Water 10 mL Purge
Associated Lab Samples: 60300880001, 60300880002, 60300880003, 60300880004, 60300880005, 60300880006, 60300880007,
60300880008, 60300880009, 60300880010, 60300880011, 60300880012, 60300880013, 60300880014,
60300880015
METHOD BLANK: 2386696
Matrix: Water
Associated Lab Samples:
60300880001, 60300880002, 60300880003, 60300880004, 60300880005, 60300880006, 60300880007,
60300880008, 60300880009, 60300880010, 60300880011, 60300880012, 60300880013, 60300880014,
60300880015
Blank Reporting
Parameter
Units
Result
Limit
MDL
Analyzed
cis-1,2-Dichloroethene
ug/L
ND
1.0
0.17
04/29/19 21
49
Tetrachloroethene
ug/L
ND
1.0
0.22
04/29/19 21
49
Trichloroethene
ug/L
ND
1.0
0.17
04/29/19 21
49
Vinyl chloride
ug/L
ND
1.0
0.11
04/29/19 21
49
1,2-Dichloroethane-d4 (S)
%
101
77-122
04/29/19 21
49
4-Bromofluorobenzene (S)
%
100
80-120
04/29/19 21
49
Toluene-d8 (S)
%
101
80-120
04/29/19 21
49
Qualifiers
LABORATORY CONTROL SAMPLE: 2386697
Spike LCS LCS % Rec
Parameter
Units
Cone.
Result
% Rec
Limits
cis-1,2-Dichloroethene
ug/L
20
20.4
102
80-120
Tetrachloroethene
ug/L
20
19.5
97
77-121
Trichloroethene
ug/L
20
22.1
110
80-121
Vinyl chloride
ug/L
20
21.8
109
46-162
1,2-Dichloroethane-d4 (S)
%
101
77-122
4-Bromofluorobenzene (S)
%
100
80-120
Toluene-d8 (S)
%
100
80-120
Qualifiers
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2386704 2386705
Parameter
Units
60300880003
Result
MS
Spike
Cone.
MSD
Spike
Cone.
MS
Result
MSD
Result
MS
% Rec
MSD
% Rec
% Rec
Limits
RPD
Max
RPD
cis-1,2-Dichloroethene
ug/L
ND
100
100
99.7
103
100
103
43-152
3
30
Tetrachloroethene
ug/L
2.0J
100
100
94.7
95.2
93
93
62-134
0
33
Trichloroethene
ug/L
ND
100
100
102
104
102
104
61-148
2
25
Vinyl chloride
ug/L
0.78J
100
100
102
108
101
107
35-185
5
29
1,2-Dichloroethane-d4 (S)
%
98
102
77-122
4-Bromofluorobenzene (S)
%
99
99
80-120
Toluene-d8 (S)
%
100
100
80-120
Preservation pH
1.0
1.0
1.0
0
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 05/07/2019 04:46 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 24 of 29
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Pace Analytical Services, LLC
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Lenexa, KS 66219
(913)599-5665
QUALIFIERS
Project:
1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL-Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
PASI-K Pace Analytical Services - Kansas City
ANALYTE QUALIFIERS
1 e Sample was diluted due to the presence of high levels of sediment in the vials.
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 25 of 29
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iceAnalytical
www.pacelabs.oom
Pace Analytical Services, LLC
9608 Loiret Blvd.
Lenexa, KS 66219
(913)599-5665
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: 1555-13 GRNDISLD NE-SOLV DIREC
Pace Project No.: 60300880
Lab ID
Sample ID
QC Batch Method
QC Batch
60300880001
TB01-042419
EPA 5030B/8260
581604
60300880002
B6-042419
EPA 5030B/8260
581604
60300880003
B1-042419
EPA 5030B/8260
581604
60300880004
B5-042419
EPA 5030B/8260
581604
60300880005
B4-042419
EPA 5030B/8260
581604
60300880006
B9-042419
EPA 5030B/8260
581604
60300880007
FD01-042419
EPA 5030B/8260
581604
60300880008
B8-042419
EPA 5030B/8260
581604
60300880009
B14-042419
EPA 5030B/8260
581604
60300880010
B11-042419
EPA 5030B/8260
581604
60300880011
B12-S -042419
EPA 5030B/8260
581604
60300880012
B12-D-042419
EPA 5030B/8260
581604
60300880013
B21-042419
EPA 5030B/8260
581604
60300880014
EB01-042419
EPA 5030B/8260
581604
60300880015
IDW01-042419
EPA 5030B/8260
581604
Analytical Method
Analytical
Batch
Date: 05/07/2019 04:46 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 26 of 29
-------
Paci
UO#:60300880
/ Pace Analytical
wawv petcoMas con»
Sample Condition Upon Receipt
60300680
(M
Client Name:
Courier: FedEx UPS ~ VIA ~ Clay ~ PEX ~ ECI ~ Pace ~ Xroads ~ Client ~ Other ~
Tracking #: VU Z1H5 Pace Shipping Label Used? Yes 0 No ~
Custody Seal on Cooler/Box Present: Yes 0^ No ~ Seals intact: Yes-£f No ~
Packing Material; Bubble Wrap ~ Bubble Bags 0^ Foam ~ None ~ Other ~
Thermometer Used: T'2^% Type of Ice: Blue None
Cooler Temperature
(°C): As-read Ji- V Corr. Factor — 9 Sulfide, NaOH>10 Cyanide)
(Exceptions. VOA, Micro, O&G. KS 7PH OK-DRO)
~ Yes ~»
Ofj/A
List sample IDs, volumes, lot #'s of preservative and the
date/time added.
Cyanide water sample checks
Lead acetate strip turns dark? (Record only)
Potassium iodide test strip turns blue/purple? (Preserve)
~ Yes Dm
~ Yes am
Trip Blank present
0Yes DNo
~ N/A
Headspace in VOA vials ( >6mm):
~ Yes 0No
~ n/a
Samples from USDA Requlated Area: State:
~ Yes QNo
•0N/A
Additional labels attached to 5035A / TX1005 vials in the field?
~ Yes HNo
An/a
Client Notification/ Resolution:
Person Contacted:
Comments/ Resolution
Copy COC to Client? Y / N
Date/Time:
Field Data Required?
Y / N
Project Manager Review:
Date:
F-KS-C-003-Rev.11, Febrffl^S/Wl^
-------
z?.ceAnalytical *
CHA1N-0F-CUST0DY / Analytical Request Document
The Chain-of-Custody is a LEGAL DOCUMENT. Ail relevant fields must be completed accurately.
Section ft
Required Client Information:
Section B
>d Project Information:
Section C
'Important Note: By signing this form you are accepting Pace's NET 30 day payment terms and agreeing to laie charges of 1.5% per month „
F-ALl-Q-020rev 08, 12~Oct~20Q7
-------
S2,
CHAIN-OF-CUSTODY / Analytical Request Document
Analytica/ " The Chain~of~Custody is a LEGAL DOCUMENT, Al! relevant fields must be completed accurately.
Section A
Required Client Information:
Section B
Required Project Information:
Section C
Invoice Information:
Z 2_
i irany: UPRR_JaCObS
Report To: Matt Sugar
Attam (. Kevin Peterburs
aadrwa 2300 Main St Ste 325
copy To: Artie Wickham
L ompany Name: UPRR
REGULATORY AGENCY
Kansas City, MO 64108
UPRR SyoDat
/-" ress:
. - -
r- - r— ¦ .
cr , , T-
Purcnase Order No: 1555-13-RevO
r usr
r RCRA
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Fax:
Prcj-a Namp 1555-13 Gmdlsld NE-Sok Direct Push Inv
Manaqer
Site Location
NE
< --'i1': 'J-if/"/, *%'-
f-' ' '//.ft-'A->' 'vA',%
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Requested Due Date/TAT:
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STATE:
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/•A''vy ///•/,' -y-/'*'/
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Section D
Required Client Information
WT
LtCNKiN'o
WATER
WASTE WATER WW
PRODUCT P
SOIUSOLI0 SL
OIL
OL
(A-Z,
IDs Ml
feZ.\ -
COLLECTED
<
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CD
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UJ
Q uj
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^ 5 i"
X "
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<
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Preservatives
o
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X X
x ^
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03 03
Requested Analysis Filtered (YIN)
1 UJ
8,
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Pace Project Noi Lab I.D.
10
11
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JFLAG/MDLs REQUIRED f\
ADDITIONAL COMMENTS
RELINQUISHED BY / AFFILIATION
ACCEPTED BY / AFFILIATION
DATE
TIME
SAMPLE CONDITIONS
SAMPLER NAME AND SIGNATURE
PRINT Name of SAMPLER;
SIGNATURE of SAMPLER;
DATE Signed
(MM/PD/YY):
•important Note; By signing this form you are accepting Pace's NET 30 day payment terms and agreeing to fate charges of 1 5% per month for any invoices nol paid wrthin 30 days.
F-ALL-Q-020rev 08, 12-0ct-2007
-------
Memorandum
May 15, 2019
To:
Matt Sugar
Ref. No.: 11183954-95-06-1555
From:
Y
Jeffrey Cloud/eew/250-NF
Tel:
206-914-3141
cc:
Artie Wickham, Jesse Orth, Julie Lidstone
Subject: Analytical Results and Reduced Validation of Reports 60300753 and 60300880
Direct Push Investigation
Union Pacific Railroad (UPRR) - Solvent Site
Grand Island, Nebraska
April 2019
1. Introduction
This document details a reduced validation of analytical results for groundwater samples collected in support
of the Direct Push Investigation at the Solvent Site in Grand Island, Nebraska during April 2019. Samples
were submitted to Pace Analytical Services, located in Lenexa, Kansas. A sample collection and analysis
summary is presented in Table 1. A summary of the analytical methodology is presented in Table 2. The
validated analytical results are summarized in Table 3.
Standard GHD report deliverables were submitted by the laboratory. The final results and supporting quality
assurance/quality control (QA/QC) data were assessed. Evaluation of the data was based on information
obtained from the chain of custody forms, finished report forms, method blank data, recovery data from
surrogate spikes, laboratory control samples, matrix spikes and field QC samples.
The QA/QC criteria by which these data have been assessed are outlined in the analytical method
referenced in Table 2 and applicable guidance from the document entitled "USEPA Contract Laboratory
Program National Functional Guidelines for Superfund Organic Methods Data Review",
USEPA 540-R-08-01, June 2008 subsequently referred to as the "Guidelines" in this Memorandum.
2. Sample Holding Time and Preservation
The sample holding time criterion and sample preservation requirements for the analysis are summarized in
the method. The sample chain of custody documents and analytical reports were used to determine sample
holding times. All samples were prepared and analyzed within the required holding times.
All sample containers were properly preserved, delivered on ice and stored by the laboratory at the required
temperature (0-6°C) with the exception of one sample container received by the laboratory with a pH outside
GHD
4550 Kruse Way Suite 300 Lake Oswego OR 97035 USA
T971 925 3756 W www.ghd.com
ISO 9001
-------
of the acceptable limit resulting in a reduced holding time. The sample was analyzed within the reduced
holding time and the associated sample results were not impacted. No qualification of the data was deemed
necessary.
3. Laboratory Method Blank Analyses
Method blanks are prepared from a purified matrix and analyzed with investigative samples to determine the
existence and magnitude of sample contamination introduced during the analytical procedures.
For this study, laboratory method blanks were analyzed at a minimum frequency of 1 per 20 investigative
samples and/or 1 per analytical batch.
All method blank results were non-detect, indicating that laboratory contamination was not a factor for this
investigation.
4. Surrogate Spike Recoveries
In accordance with the method employed, all samples, blanks, and QC samples analyzed for organics are
spiked with surrogate compounds prior to sample analysis. Surrogate recoveries provide a means to
evaluate the effects of laboratory performance on individual sample matrices.
All samples submitted for volatile organic compound (VOC) analysis were spiked with the appropriate
number of surrogate compounds prior to sample analysis.
Surrogate recoveries were assessed against the control limits. All surrogate recoveries met the associated
criteria.
5. Laboratory Control Sample Analyses
Laboratory control samples (LCS) are prepared and analyzed as samples to assess the analytical
efficiencies of the method employed, independent of sample matrix effects.
For this study, LCS were analyzed at a minimum frequency of 1 per 20 investigative samples and/or 1 per
analytical batch.
The LCS contained all analytes of interest. All LCS recoveries were within associated control limits,
demonstrating acceptable analytical accuracy.
6. Matrix Spike/Matrix Spike Duplicate Analyses
To evaluate the effects of sample matrices on the preparation process, measurement procedures, and
accuracy of a particular analysis, samples are spiked with a known concentration of the analyte of concern
GHD 11183954Memo-250
2
-------
and analyzed as matrix spike/matrix spike duplicate (MS/MSD) samples. The RPD between the MS and
MSD is used to assess analytical precision. MS/MSD analyses were performed as specified in Table 1.
The MS/MSD samples were spiked with the analytes of interest. All percent recoveries and RPD values were
within the associated control limits, demonstrating acceptable analytical accuracy and precision.
7. Field QA/QC Samples
The field QA/QC consisted of two trip blank samples, one equipment blank sample and one field duplicate
sample set.
Trip Blank Sample Analysis
To evaluate contamination from sample collection, transportation, storage, and analytical activities, two trip
blanks were submitted to the laboratory for analysis. All results were non-detect for the analytes of interest.
Equipment Blank Sample Analysis
To assess field decontamination procedures, ambient conditions at the site, and cleanliness of sample
containers, one equipment blank was submitted for analysis, as identified in Table 1. All results were
non-detect for the analytes of interest.
Field Duplicate Sample Analysis
To assess the analytical and sampling protocol precision, one field duplicate sample was collected and
submitted "blind" to the laboratory, as specified in Table 1. The RPDs associated with the duplicate sample
must be less than 50 percent. If the reported concentration in both the investigative sample and its duplicate
are less than five times the reporting limit (RL), the evaluation criterion is one times the RL value.
All field duplicate results were within acceptable agreement, demonstrating acceptable sampling and
analytical precision.
8. Analyte Reporting
Non-detect data were reported down to the laboratory's method detection limit (MDL) for each analyte.
Positive analyte detections less than the RL but greater than the MDL were reported as estimated (J) in
Table 3. Non-detect results were presented as non-detect at the MDL in Table 3.
9. Conclusion
Based on the assessment detailed in the foregoing, the summarized data are acceptable without
qualification.
GHD 11183954Memo-250
3
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Page 1 of 1
Table 1
Sample Collection and Analysis Summary
Direct Push Investigation
Union Pacific Railroad (UPRR) - Solvent Site
Grand Island, Nebraska
April 2019
Analysis/Parameters
Sample
Identification
Location
Matrix
Collection
Date
(mm/dd/yyyy)
Collection
Time
(hr:min)
VOCs
Comments
B1-042419
B2-S-042319
B2-D-042319
B3-042319
B4-042419
B5-042419
B6-042419
B7-D-042319
B7-S-042319
B8-042419
B9-042419
FD01-042419
B10-042319
B11-042419
B12-S-042419
B12-D-042419
B13-042319
B14-042419
B15-S-042319
B15-D-042319
B16-042319
B17-042319
B18-D-042319
B18-S-042319
B19-D-042319
B19-S-042319
B20-042319
B21-042419
EB01-042419
TB01-042319
TB01-042419
B1
B2
B2
B3
B4
B5
B6
B7
B7
B8
B9
B9
B10
B11
B12
B12
B13
B14
B15
B15
B16
B17
B18
B18
B19
B19
B20
B21
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
04/24/2019
04/23/2019
04/23/2019
04/23/2019
04/24/2019
04/24/2019
04/24/2019
04/23/2019
04/23/2019
04/24/2019
04/24/2019
04/24/2019
04/23/2019
04/24/2019
04/24/2019
04/24/2019
04/23/2019
04/24/2019
04/23/2019
04/23/2019
04/23/2019
04/23/2019
04/23/2019
04/23/2019
04/23/2019
04/23/2019
04/23/2019
04/24/2019
04/24/2019
04/23/2019
04/24/2019
08:55
15:00
15:40
14:30
09:55
09:35
08:25
13:45
14:10
10:45
10:20
13:20
12:20
12:45
13:05
13:00
11:10
11:00
11:30
07:40
08:10
08:40
09:05
09:40
10:05
10:40
13:40
14:00
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
MS/MSD
FD (B9-042419)
Equipment Blank
Trip Blank
Trip Blank
Notes:
FD - Field Duplicate sample of sample in parenthesis
MS/MSD - Matrix Spike/Matrix Spike Duplicate
VOCs - Volatile Organic Compounds
- Not Applicable
GHD 11183954Memo-250-Tbls
-------
Page 1 of 1
Table 2
Analytical Methods
Direct Push Investigation
Union Pacific Railroad (UPRR) - Solvent Site
Grand Island, Nebraska
April 2019
Parameter
Method
Matrix
Volatile Organic Compounds (VOCs)
SW-846 8260
0)
Water
Notes:
0)
- SW-846 - "Test Methods for Evaluating Solid Waste, Physical/Chemical Methods", SW-846,
Third Edition, 1986, with subsequent revisions
GHD 11183954Memo-250-Tbls
-------
Table 3
Page 1 of 3
Analytical Results Summary
Direct Push Investigation
Union Pacific Railroad (UPRR) - Solvent Site
Grand Island, Nebraska
April 2019
Location ID: B1 B2 B2 B3 B4 B5 B6 B7 B7 B8
Sample Name: B1-042419 B2-D-042319 B2-S-042319 B3-042319 B4-042419 B5-042419 B6-042419 B7-D-042319 B7-S-042319 B8-042419
Sample Date: 04/24/2019 04/23/2019 04/23/2019 04/23/2019 04/24/2019 04/24/2019 04/24/2019 04/23/2019 04/23/2019 04/24/2019
Parameters Unit
Volatile Organic Compounds
cis-1,2-Dichloroethene
|jg/L
<0.85
<0.17
2.6
0.21 J
<0.17
1.1
18.2
0.99 J
13.1
<0.17
Tetrachloroethene
|jg/L
2.0 J
<0.22
5.4
2.9
1.1
6.4
29.8
1.0 J
19.8
6.0
Trichloroethene
|jg/L
<0.85
<0.17
2.9
1.9
<0.17
2.5
17.0
0.21 J
13.5
0.94 J
Vinyl chloride
|jg/L
0.78 J
<0.11
<0.11
<0.11
<0.11
<0.11
<0.55
<0.11
<0.55
<0.11
GHD 11183954Memo-250-Tbls
-------
Table 3
Page 2 of 3
Analytical Results Summary
Direct Push Investigation
Union Pacific Railroad (UPRR) - Solvent Site
Grand Island, Nebraska
April 2019
Location ID:
Sample Name:
Sample Date:
Parameters Unit
Volatile Organic Compounds
cis-1,2-Dichloroethene |jg/L
Tetrachloroethene |jg/L
Trichloroethene |jg/L
Vinyl chloride |jg/L
B9 B9 B10
B9-042419 FD01-042419 B10-042319
04/24/2019 04/24/2019 04/23/2019
Duplicate
24.6 25.1 117
40.4 43.1 13.9
22.2 24.4 20.0
<0.55 4.4 J <0.55
B11 B12 B12
B11-042419 B12-D-042419 B12-S-042419
04/24/2019 04/24/2019 04/24/2019
<0.17 <0.17 10.3
5.6 <0.22 28.9
1.0 <0.17 12.1
<0.11 <0.11 0.13 J
B13 B14 B15
B13-042319 B14-042419 B15-D-042319
04/23/2019 04/24/2019 04/23/2019
182 <0.17 9.1
54.6 2.8 0.84 J
48.4 <0.17 0.20 J
<0.11 <0.11 <0.11
GHD 11183954Memo-250-Tbls
-------
Table 3
Page 3 of 3
Analytical Results Summary
Direct Push Investigation
Union Pacific Railroad (UPRR) - Solvent Site
Grand Island, Nebraska
April 2019
Location ID: B15 B16 B17 B18 B18 B19 B19 B20 B21
Sample Name: B15-S-042319 B16-042319 B17-042319 B18-D-042319 B18-S-042319 B19-D-042319 B19-S-042319 B20-042319 B21-042419
Sample Date: 04/23/2019 04/23/2019 04/23/2019 04/23/2019 04/23/2019 04/23/2019 04/23/2019 04/23/2019 04/24/2019
Parameters Unit
Volatile Organic Compounds
cis-1,2-Dichloroethene |jg/L
Tetrachloroethene |jg/L
Trichloroethene |jg/L
Vinyl chloride |jg/L
<0.17 <0.17 <0.17
<0.22 2.2 13.6
<0.17 <0.17 1.0
<0.11 <0.11 <0.11
<0.17 29.5 7.1
1.1 17.8 6.5
<0.17 10.7 4.3
<0.11 <0.11 <0.11
<0.17 <0.17 <0.17
1.6 <0.22 0.28 J
<0.17 <0.17 <0.17
<0.11 <0.11 0.18 J
Notes:
< - Not detected at the associated reporting limit
J - Estimated concentration
GHD 11183954Memo-250-Tbls
------- |