FIFTH FIVE-YEAR REVIEW REPORT FOR
KALAMA SPECIALTY CHEMICALS SUPERFUND SITE
BEAUFORT COUNTY, SOUTH CAROLINA
V>EPA
SEPTEMBER 2023
Prepared by
U.S. Environmental Protection Agency
Region 4
Atlanta, Georgia
CAROLINE
FREEMAN
Digitally signed by
CAROLINE FREEMAN
Date: 2023.09.19 15:57:48
-04'00'
Caroline Y. Freeman, Director
Superfund & Emergency Management Division
-------
Table of Contents
LIST OF ABBREVIATIONS AND ACRONYMS iv
I. INTRODUCTION 1
Site Background 1
FIVE-YEAR REVIEW SUMMARY FORM 2
II. RESPONSE ACTION SUMMARY 4
Basis for Taking Action 4
Response Actions 4
Status of Implementation 7
Systems Operations/Operation and Maintenance (O&M) 11
III. PROGRESS SINCE THE PREVIOUS REVIEW 12
IV. FIVE-YEAR REVIEW PROCESS 15
Community Notification, Community Involvement and Site Interviews 15
Data Review 15
Site Inspection 20
V. TECHNICAL ASSESSMENT 23
QUESTION A: Is the remedy functioning as intended by the decision documents9 23
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels and RAOs used at the
time of the remedy selection still valid9 23
QUESTION C: Has any other information come to light that could call into question the
protectiveness of the remedy9 24
VI. ISSUES/RECOMMENDATIONS 25
VII. PROTECTIVENESS STATEMENT 27
VIII. NEXT REVIEW 27
APPENDIX A - REFERENCE LIST A-1
APPENDIX B - CURRENT SITE STATUS B-l
APPENDIX C - SITE CHRONOLOGY C-l
APPENDIX D - PRESS NOTICE D-l
APPENDIX E - INTERVIEW FORMS E-l
APPENDIX F - SITE INSPECTION CHECKLIST F-l
APPENDIX G - SITE INSPECTION PHOTOS G-l
APPENDIX H - DATA TABLES AND FIGURES H-l
APPENDIX I- DETAILED GROUNDWATER ARARS REVIEW TABLE 1-1
APPENDIX J - SCREENING-LEVEL RISK REVIEW J-l
APPENDIX K - 2019 DECLARATION OF INSTITUTIONAL ENVIRONMENTAL CONTROLS K-l
Tables
Table 1: Site COCs, by Media 4
Table 2: Groundwater COC Cleanup Goals 6
Table 3: Soil/Sediment COC Cleanup Goals 6
Table 4: Summary of Planned and/or Implemented Institutional Controls (ICs) 9
Table 5: O&M Costs Over the FYR Period 11
Table 6: Protectiveness Determination/Statement from the 2018 FYR Report 12
Table 7: Status of Recommendations from the 2018 FYR Report 12
ii
-------
Table 8: Annual Maximum Concentrations and Number of Wells Exceeding Cleanup Goals, Surficial
Aquifer 16
Table 9: PFBS, PFOA and PFOS Concentrations Compared to 2022 Lifetime Health Advisories 19
Table C-l: Site Chronology C-l
Table H-l: Historical Analytical Groundwater Data H-18
Table H-2: PFAS Analytical Results, November 2020 H-49
Table H-3: PFAS Analytical Results, December 2021 H-50
Table H-4: PFAS Analytical Results, June 2022 H-53
Table H-5: PFAS Data Summary from June 2021 Private Wells Sampling Report H-55
Table J-l: Residential Screening-Level Risk Review of Soil Cleanup Goals J-l
Table J-2: Industrial Screening-Level Risk Review of Soil Cleanup Goals J-2
Table J-3: Industrial Vapor Intrusion Evaluation of Groundwater Data, 2018 to 2022 J-3
Table J-4: Industrial Vapor Intrusion Evaluation of 1,2-DCA at Well CW-3 J-3
Table J-5: Screening-Level Risk Review of Maximum Concentration of PFAS Constituents J-4
Figures
Figure 1: Site Vicinity Map 3
Figure 2: Institutional Control Map 10
Figure 3: Detailed Site Map 22
Figure H-l: Well Map H-l
Figure H-2: Surficial Aquifer Potentiometric Surface Map, June 2022 H-2
Figure H-3: Bedrock Aquifer Potentiometric Surface Map, June 2022 H-3
Figure H-4: Benzene Concentrations in the Surficial Aquifer, June 2022 H-4
Figure H-5: Ethylbenzene Concentrations in the Surficial Aquifer, June 2022 H-5
Figure H-6: Xylene Concentrations in the Surficial Aquifer, June 2022 H-6
Figure H-7: 1,2-DC A Concentrations in the Surficial Aquifer, June 2022 H-7
Figure H-8: 1,2-DC A Concentrations in the Bedrock Aquifer, June 2022 H-8
Figure H-9: PFOS and PFOA Detections in the Surficial Aquifer H-9
Figure H-10: PFOS and PFOA Detections in the Bedrock Aquifer H-10
Figure H-1 1: Bedrock Potentiometric Surface Map (during pumping), June 2021 H-l 1
Figure H-12: Benzene Groundwater Screening Results, Surficial Aquifer H-l2
Figure H-l3: 1,2-DCA Groundwater Screening Results, Surficial Aquifer H-l3
Figure H-14: 1,2-DCA Groundwater Screening Results, Bedrock Aquifer H-l4
Figure H-l5: Geologic Cross-Section A-A' with 1,2-DCA Groundwater Screening Results H-15
Figure H-l6: Geologic Cross-Section B-B" with 1,2-DCA Groundwater Screening Results H-l6
Figure H-l7: Geologic Cross-Section C-C with 1,2-DCA Groundwater Screening Results H-l7
in
-------
LIST OF ABBREVIATIONS AND ACRONYMS
1,2-DCA
1,2-Dichloroethane
1,1-DCE
1,1 -Dichloroethene
1,1,1-TCA
1,1,1 -Trichl oroethane
ARAR
Applicable or Relevant and Appropriate Requirement
CERCLA
Comprehensive Environmental Response, Compensation, and Liability Act
CFR
Code of Federal Regulations
CLP
Contract Laboratory Program
COC
Contaminant of Concern
EPA
United States Environmental Protection Agency
ESD
Explanation of Significant Differences
FS
Feasibility Study
FYR
Five-Year Review
HI
Hazard Index
HQ
Hazard Quotient
IC
Institutional Control
J
Estimated Value
KSCI
Kalama Specialty Chemicals, Inc.
MCAS
Marine Corps Air Station
MCL
Maximum Contaminant Level
mg/kg
Milligrams per Kilogram
|ig/L
Micrograms per Liter
N/A
Not Applicable
NCP
National Contingency Plan
ND
Not Detected
NPL
National Priorities List
O&M
Operation and Maintenance
PFAS
Per- and Polyfluoroalkyl Substances
PFOA
Perfluorooctanoic Acid
PFOS
Perfluorooctane Sulfonic Acid
PRP
Potentially Responsible Party
RAO
Remedial Action Objective
RCRA
Resource Conservation and Recovery Act
RI
Remedial Investigation
ROD
Record of Decision
RPM
Remedial Project Manager
RSL
Regional Screening Level
SCDHEC
South Carolina Department of Health and Environmental Control
svoc
Semi-Volatile Organic Compound
UU/UE
Unlimited Use/Unrestricted Exposure
VISL
Vapor Intrusion Screening Level
VOC
Volatile Organic Compound
IV
-------
I. INTRODUCTION
The purpose of a five-year review (FYR) is to evaluate the implementation and performance of a remedy
to determine if the remedy is and will continue to be protective of human health and the environment.
The methods, findings and conclusions of reviews are documented in FYR reports such as this one. In
addition, FYR reports identify issues found during the review, if any, and document recommendations to
address them.
The U.S. Environmental Protection Agency is preparing this FYR pursuant to the Comprehensive
Environmental Response, Compensation, and Liability Act (CERCLA) Section 121, consistent with the
National Contingency Plan (NCP) (40 Code of Federal Regulations (CFR) Section 300.430(f)(4)(ii)),
and considering EPA policy.
This is the fifth FYR for the Kalama Specialty Chemicals Superfund site (the Site). The triggering action
for this statutory review is the completion date of the previous FYR. 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 (UU/UE).
The Site consists of one operable unit (OU) that encompasses the entire Site and addresses groundwater,
soil and sediment contamination. This FYR Report addresses the site wide OU (OlJ-1).
The EPA remedial project manager (RPM) Jasmin Jefferies led the FYR. Participants included the EPA
community involvement coordinator Angela Miller, Sara MacDonald and Chris Slocutn of the South
Carolina Department of Health and Environmental Control (SCDHEC), and Sabrina Foster and
Kim Johnson Chase with EPA contractor Skeo. Raytheon, the potentially responsible party (PRP), was
notified of the initiation of the FYR. The review began on 10/4/2022.
Site Background
The 50-acre Site is in the city of Beaufort in Beaufort County, South Carolina (Figure 1). The Site
includes the former Kalama Specialty Chemicals, Inc. (KSCI) manufacturing plant and the former
Benton Trailer Park, which KSCI purchased in 1980. From 1973 to 1983, the Vega Chemicals Company
and KSCI conducted operations on-site, including chemical repackaging, custom hydrogenations and
manufacture of an herbicide called Krenite. Operators disposed of the plant's wastewater on-site in
various ponds and fields. A 1979 laboratory experiment resulted in an explosion and fire, both of which
contaminated groundwater, sediment and soil.
The Site is not in use and the trailers are no longer on-site. The area is wooded, and its features include
several drainage ditches, an infiltration pond, concrete building slabs and a groundwater treatment
building. The Site is heavily forested, with dirt roads and trails throughout. About 60% of the Site's land
area (30 acres) is delineated wetlands. Surrounding land uses include residential, commercial, industrial,
agricultural and military areas. A recreation trail borders the Site to the west. Homes, a pillow factory
and a drive-in movie theater border it to the north. A gas station borders it to the east. The U.S. Marine
Corps Air Station (MCAS) Beaufort property is east and south of the Site. There is also a mobile home
community southwest of the Site and south of the neighboring concrete plant, Thomas Concrete
(formerly Coastal Concrete).
The relevant site aquifers beneath the Site include the surficial aquifer, which consists of sands and
clays, and the bedrock aquifer, which consists of sandy limestone. The bedrock aquifer is the upper
hydrogeologic unit of the regional Floridan aquifer. A non-continuous clay layer separates the surficial
1
-------
aquifer from the bedrock aquifer. Groundwater flow at the Site is affected by the groundwater treatment
system when it is operating. Before the system was active, the flow in the surficial aquifer was generally
to the northwest and flow in the limestone bedrock aquifer was generally southwest. According to the
Beaufort Jasper Water & Sewer Authority, the major source of water for the area is the Savannah River.
Most neighboring businesses and residents are connected to the public water supply and the EPA
sampled two private wells - one potable well at a residence and one production well at the Thomas
Concrete facility - in the area in 2021 (see Data Review for results).
See Appendix A for references used during this FYR, Appendix B for site status information and
Appendix C for the Site's event chronology.
FIVE-YEAR REV IEW SUMMARY FORM
Si l l. IDEM II l( A I ION
Site Name: Kalama Specialty Chemicals
EPA ID: SCD094995503
Region: 4
State: South
Carolina
City/County: Beaufort/ BEAUFORT County
SITE S I A I I S
NPL Status: Final
Multiple OlJs?
No
Has the Site achieved construction completion?
Yes
REVIEW STATES
Lead agency: EPA
Author name: Jasmin Jefferies
Author affiliation: EPA with support provided by Skeo
Review period: 10/4/2022 - 6/1/2023
Date of site inspection: 1 1/14/2022
Type of review: Statutory
Review number: 5
Triggering action date: 9/28/2018
Due date (fiveyears after triggering action date)'. 9/28/2023
2
-------
Beaufort, SO
Figure 1: Site Vicinity Map
U.S. Marine
Corps Air Station
Beaufort
^Skeo
Last Modified: 3/6/2023
A
Kalama Specialty Chemicals Superfund Site
City of Beaufort, Beaufort County, South Carolina
1
250
Disclaimer This map and any boundary lines within the map are
approximate and subject to change. The map is not a survey. The
map is for informational purposes only regarding the EPA's response
actions at the Site Map image is the intellectual property of Esri and
is used herein under license. Copyright © 2020 Esri and its
licensors. All rights reserved. Sources: Esri, Maxarthe 2018 FYR
Report and the 2022 Semi-Annual Report.
3
-------
II. RESPONSE ACTION SUMMARY
Basis for Taking Action
The 1990 remedial investigation (RI) determined that soil, sediment (especially in an "L-shaped" ditch),
and shallow groundwater were contaminated with volatile organic compounds (VOCs), semi-volatile
organic compounds (SVOCs) and metals. Table 1 lists site contaminants of concern (COCs), by media.
Table 1: Site COCs, by Media
Chemical
COC
Groundwater
Soil and
Classification
Sediment
Benzene
X
X
Toluene
-
X
Ethylbenzene
X
X
Xylenes
X
X
VOCs
1,2-Dichloroethane (1,2-
DCA)
X
X
Methylene chloride
X
X
Vinyl chloride
-
X
1.1 -Dichloroethene (1.1-
X
X
DCE)
SVOCs
Benzoic acid
..
X
Antimony
-
X
Chromium
-
X
Metals
Lead
-
X
Nickel
-
X
Mercury
-
X
Notes:
Source: Table 7-2 of the Site's 1993 Record of Decision (ROD).
"X" denotes that contaminant is a COC for the given medium.
" denotes that contaminant is not a COC for the given medium.
The Site's 1993 baseline risk assessment determined that the following scenarios exceeded the EPA's
acceptable risk levels:
• Future residential land use due to potential ingestion of groundwater.
• Land use at the time of the baseline risk assessment (trespasser exposure scenario) due to
potential ingestion of on-site sediment, soil and surface water.
Risk estimates primarily focused on human health but did provide a qualitative risk estimate for most
wildlife species found at or near the Site. The evaluation of ecological risk determined that exposure to
COC concentrations at the Site would not likely produce a significant adverse effect on terrestrial or
aquatic ecological receptors.
Response Actions
During the 1970s, contamination at the Site came to the attention of the SCDHEC, which ordered KSC1
to install a wastewater treatment system and initiate a groundwater monitoring program in 1976. The
SCDHEC discovered buried drums at the Site in 1979. In 1980, the SCDHEC issued a Consent Order to
4
-------
KSCI to study the extent of soil and groundwater contamination and design a cleanup plan. Further
inspections led to decommissioning of an inadequate pond and tile field system in 1980 and
decommissioning of a larger wastewater lagoon in 1983.
Due to soil and shallow groundwater contamination and the potential effect of these contaminants on the
deeper Floridan aquifer, the EPA proposed the Site for listing on the Superfund program's National
Priorities List (NPL) in September 1983. The EPA finalized the Site's listing on the NPL in September
1984. The EPA and the SCDHEC agreed the state would have lead responsibility for the cleanup. From
1983 to 1986, the SCDHEC pursued studies and remedial activities with KSCI under a SCDHEC
Consent Order. However, KSCI was not meeting schedules and completing work assignments. To
resolve these difficulties, the EPA's Superfund program assumed lead responsibility for cleanup in late
1986 and designated KSCI as the Site's PRP. The EPA entered into an Administrative Order on Consent
with KSCI in January 1988 to perform an RI and feasibility study (FS) at the Site with EPA oversight.
The EPA issued the Site's Record of Decision (ROD) in 1993. The ROD included the following
remedial action objectives (RAOs):
• For source control:
o Prevent or mitigate the release of contaminants that would result in groundwater
concentrations above maximum contaminant levels (MCLs).
o Reduce risks to human health associated with dermal contact or ingestion of the
contaminated soils and inhalation of soil particulates to less than 1 for chronic hazard
index (HI) and to between 1 x 10"4 and 1 x 10"6 for carcinogens,
o Reduce contaminant concentrations in the soil to levels that are safe for environmental
receptors that may contact soil contaminants.
• For groundwater control:
o Prevent off-site migration of groundwater containing contaminants above MCLs.
o Prevent ingestion of groundwater from the water table aquifer containing COCs where
the chronic hazard risk is more than 1 and the MCL is exceeded.
The EPA selected the Site's remedy to address on-site groundwater, soil and sediment contamination in
the 1993 ROD It included the following major components:
• Treatment of soil and sediment (both on the surface and in the L-shaped ditch) contaminated
with VOCs and metals by excavation with either: 1) volatilization, solidification and replacement
of soils into the excavation, or 2) as a contingency, removal of the excavated soil to a Resource
Conservation and Recovery Act (RCRA) landfill if soil characteristics and cost effectiveness
deem off-site disposal to be more feasible.
• Extraction and treatment of groundwater COCs to their respective MCLs.
• Monitoring of groundwater with more monitoring wells, including new deep wells in the
bedrock aquifer.
• Treatment of air emissions from volatilization, as needed, to meet ambient air quality standards.
Table 2 lists the 1993 ROD's groundwater cleanup goals. Table 3 lists the soil/sediment cleanup goals.
Due to the conservative nature of the health-based and the leachate models on which soil/sediment
cleanup goals are based, certain chemical-specific cleanup goals were calculated below respective
method detection limits. This is the case with the methylene chloride, benzene, vinyl chloride and
1,2-dichloroethane (1,2-DCA) soil/sediment cleanup goals. None of these compounds were detected in
soil and sediment background samples during the RI. Therefore, the soil/sediment cleanup goal for these
5
-------
chemicals is a non-detectable result obtained from analyses using validated Contract Laboratory
Program (CLP) protocol.
Table 2: Groundwater COC Cleanup Goals
Groundwater COC
ROD Cleanup Goal (jiig/L)
Benzene
5
Ethylbenzene
700
Xvlcncs
10,000
1.2-DCA
5
Methylene chloride
5
1.1-DCE
7
Notes:
Source: Table 7-2 of the Site's 1993 ROD.
Cleanup goals are based on federal and state MCLs and a
chronic HI less than 1 (most conservative value).
Hg/L = micrograms per liter
Table 3: Soil/Sediment COC Cleanup Goals
Soil/Sediment COC
ROD Cleanup Goal" (mg/kg)
Benzene
0.0073b
Toluene
4
Ethylbenzene
7
Xvlenes
60
1.2-DCA
0.0027b
Methylene chloride
0.0018b
Vinvl chloride
0.021b
1.1-DCE
0.023b
Benzoic acid
25,000
Antimonv
3
Chromium
40
Lead
500
Nickel
140
Mercury
2
Notes:
Source: Table 7-2 of the Site's 1993 ROD.
a. Cleanup goals are based on the more conservative value of
human health risks for direct contact with the contaminant or
the contaminant's leachability potential.
b.Cleanup goal was calculated below respective method
detection limits and compound was not detected in
background samples. Therefore, the cleanup goal is a non-
6
-------
detectable result obtained from analyses using validated CLP
protocol.
mg/kg = milligrams per kilogram
The 1993 ROD did not require institutional controls. In 2016, the EPA issued an Explanation of
Significant Differences (ESD) to require institutional controls as part of the remedy to restrict
groundwater use on parcels affected by contaminated groundwater.
Status of Implementation
The EPA and the PRP signed a Consent Decree in December 1994. KSCI agreed to conduct the Site's
remedial design and remedial action for soil, sediment, groundwater and air.
Soil and Sediment
PRP contractors removed contaminated soil in March and April 1996, excavating about 75 cubic yards
of soil and an additional 10 yards of other debris and disposing of it in an approved off-site RCRA
landfill. Sediment sampling found that sediment concentrations did not exceed cleanup goals.
Confirmation samples collected showed that all soil exceeding cleanup goals for COCs had been
removed. PRP contractors replaced excavated material with clean soil; vegetation now covers the areas.
Groundwater
PRP contractors completed the design of the full-scale groundwater extraction and treatment system in
spring 1997 and finished remedy construction in July 1997. Following several modifications, the system
began operating in February 1998 and was placed in stand-by mode, at the EPA's request, in
November 2021, as discussed below. The system includes several extraction wells to extract site
groundwater for treatment via air stripping. Treated effluent was discharged to the infiltration pond,
where it infiltrated into the surficial aquifer under SCDHEC Land Application Permit No. ND0076287.
Two wet air scrubber towers treat effluent air from the air strippers to control off-gas odors.
Following a 2014 remedial system evaluation, the PRP contractor implemented a pulsing groundwater
extraction strategy in September 2015 to address potential plume stagnation points and mobilize
additional contaminants. The PRP contractor submitted a technical memorandum on the pulsing strategy
data, sampling results and recommendations for a long-term pumping strategy in February 2018. The
EPA reviewed the data and determined that the pulsing strategy did not show any benefits as a long-term
remedial strategy and if implemented long term, could result in some loss of plume containment. The
system's efficacy had declined between 2013 and 2021 and had mass removal rates below design
specifications. In addition, several semiannual groundwater monitoring reports provided updates on
activities "to decrease the chances of tripping the high-level alarm." Consistent with design
specifications, the system would shut down multiple times in a year in response to high levels of
contaminants in the influent.
Additionally, sampling in November 2020, June 2021 and December 202 1 (discussed further in the Data
Review section of this FYR Report) confirmed the presence of per- and polyfluoroalkyl substances
(PFAS) in both the surficial and bedrock aquifers. In November 2021, AECOM deactivated the
groundwater extraction and treatment system, which was not designed to treat PFAS, in response to an
EPA request to "take immediate steps to treat and reduce PFAS contaminant concentrations in water
discharged to the infiltration pond." The treatment system will remain offline pending completion of the
investigation to delineate the groundwater impacts off the property and to inform the subsequent
development of remedial alternatives.
7
-------
In November 2015, the PRP contractor conducted a site investigation during which it installed three
surficial monitoring wells (MW 14-01, MW14-02 and MW 14-03) and two bedrock monitoring wells
(LW14-10 and LW14-1 1). In June 2016, the EPA requested a supplemental sampling plan to fully
delineate site-related contaminants in groundwater. The PRP contractor submitted the Groundwater
Delineation Work Plan in July 2016. The EPA approved the work plan in June 2017. The work plan has
subsequently been revised three times, most recently in 2022, in response to land access issues
preventing installation of monitoring wells on a private property west of the Site and submitting new
requests for additional monitoring well permits from the SCDHEC.
In 2021, as discussed in the 2019 revision of the Groundwater Delineation Work Plan, the PRP's
contractor, AECOM, completed 1 1 surficial aquifer borings and nine bedrock aquifer borings, as well as
six surficial aquifer monitoring wells and four bedrock aquifer monitoring wells. All borings and
monitoring wells were sampled for site COCs. Investigative efforts were delayed as a result of access
issues on neighboring properties but resumed in spring 2022. The report was issued in June 2023 and is
discussed further in the Data Review section of this FYR Report.
In 2019, AECOM performed a limited human health risk assessment for a private well used by Thomas
Concrete for non-potable, industrial uses because the well exceeds MCLs for 1,2-DC A and cis-1,2-
dichloroethylene (which is not a site COC). The well water is used only for industrial processes and
activities such as hand washing and cleaning trucks. Thomas Concrete provides bottled drinking water
to employees and there are no restrooms or showering facilities on-site. AECOM evaluated the
following exposure pathways: incidental ingestion, dermal contact, inhalation of vapors during non-
potable use, and vapor intrusion to indoor air. No unacceptable risks were found during this assessment.
Institutional Control (IC) Review
The 2016 ESD added the requirement for groundwater institutional controls to the Site's remedy.
Institutional controls were implemented in September 2019. Site parcels with institutional controls are
shown in Figure 2. The 2019 Declaration of Institutional Environmental Controls, included in Appendix K,
states "No portion of the Site will be used in violation of the following institutional controls:
1. The Site shall not be used for residential purposes. For the purposes of this subsection,
residential purposes include any dwelling (house, apartment or condominium), school,
hospital/medical clinic, nursing home/assisted living facility, daycare facility, outdoor
playground and outdoor recreation area, as well as outdoor agriculture activities.
2. No surface, groundwater or other subsurface water at, on or under the Site shall be used for
consumption by humans or animals, irrigation or any other purpose that might bring it into
contact, directly or indirectly, with humans or animals, provided that this subsection shall not
restrict environmental investigation and remediation work at the Site."
Although not required by a decision document, the 2019 Declaration of Institutional Environmental
Controls prohibits residential use of the Site, as recommended by the 2018 FYR Report.
Groundwater contamination extends off site. PRP contractor AECOM issued a technical memorandum
regarding investigations to delineate groundwater in June 2023 (discussed further in the Data Review
section of this FYR Report). The need for off-property groundwater institutional controls should
be evaluated.
8
-------
Table 4: Summary of Planned and/or Implemented Institutional Controls (ICs)
Media,
Engineered
Controls, and
Areas That Do
Not Support
UIJ/UE Based
on Current
Conditions
ICs
Needed
ICs Called
for in the
Decision
Document
s
Impacted Parcel(s)
IC
Objective
Title of IC Instrument
Implemented and
Date (or planned)
On-property
groundwater
Yes
Yes
R100 020 000 0089
0000
R100 020 000 0091
0000
Restrict
inappropriate
groundwater
use.
Declaration of
Institutional
Environmental
Controls, filed
9/17/2019, file
#2019049738, book
3794, pages 0093-0099
Off-property
groundwater
Yes
Yes
To be determined
Restrict
inappropriate
groundwater
use.3
Not yet implemented
Soil
Yes
No
R100 020 000 0089
0000
R100 020 000 0091
0000
Prohibit
residential
land use.
Declaration of
Institutional
Environmental
Controls, filed
9/17/2019, file
#2019049738, book
3794, pages 0093-0099
Notes:
a. Objective from the Site's 2016 ESD.
9
-------
Disclaimer: This map and any boundary lines within the map
are approximate and subject to change. The map Is not a
survey. The map is for informational purposes only regarding
the EPA's response actions at the Site. Map image is the
intellectual property of Esri and is used herein under license.
Copyright © 2020 Esri and its licensors. All n'ghts reserved.
Sources: Esri, Maxar, the 2018 FYR Report and the 2022
Groundwater Monitoring Report.
N Kalama Specialty Chemicals Superfund Site
k City of Beaufort, Beaufort County, South Carolina
Last Modified: 3/6/2023
Figure 2: Institutional Control Mai
U.S. Marine
Corps Air Station
Beaufort
R100 020 000 0089 0000
R100 020 000 0091 0000
Thomas
Concrete
Plant
Approximate Site Boundary
Parcels under 2019 Declaration of
Institutional Environmental Controls
1,2-DCA Concentration >5 ug/L, June
2022
10
-------
Systems Operations/Operation and Maintenance (O&M)
The PRP's contractor, AECOM, performs site O&M activities following the Site's 2016 O&M Manual.
Prior to the extraction and treatment system's deactivation in November 2021, a state licensed
wastewater treatment system operator visited the Site three to four times each week and was on call to
respond to system alarms. Operator responsibilities included inspection and maintenance of equipment,
cleaning of float switches and flow meters, changing filters, general housekeeping, recording flow
parameters, cutting grass and performing a monthly security check. When the system was operating,
groundwater influent and treatment effluent samples were collected on a monthly basis (results are
discussed in the Data Review section of this FYR Report). AECOM submits monthly O&M reports and
semi-annual groundwater monitoring reports on behalf of the PRP.
While the system is deactivated, the operator does not sample influent or effluent or perform other O&M
activities only applicable when the system is running. The operator continues to perform other O&M
activities, such as cleaning and flushing the system, mowing and security checks. O&M costs over the
FYR period are listed in Table 5.
Table 5: O&M Costs Over the FYR Period
Date Range
Total Cost (rounded to the nearest
$1,000)
2018
$175,000
2019
$168,000
2020
$162,000
2021
$141,000
2022
$88,000
11
-------
III. PROGRESS SINCE THE PREVIOUS REVIEW
This section includes the protectiveness determination and statement from the 2018 FYR Report (Table 6)
as well as the recommendations from the 2018 FYR Report and the status of those recommendations
(Table 7).
Table 6: Protectiveness Determination/Statement from the 2018 FYR Report
OH #
Protectiveness
Determination
Protectiveness Statement
1-
Sitewide
Short-term
Protective
The remedy at the Site currently protects human health and the environment
because contaminated soil and sediment were excavated and disposed of in an
off-site landfill, and groundwater extraction, treatment and monitoring are
ongoing. For the remedy to be protective over the long term, the following
actions need to be taken to ensure protectiveness:
• Complete delineation of contaminated groundw ater. Determine the
effectiveness of the remedy and whether optimizations or alternative
actions are needed to meet RAOs. Once groundwater delineation is
complete, evaluate the need for off-site groundwater institutional
controls and the potential for off-site vapor intrusion.
• Implement institutional controls.
• Modify the remedy in a decision document to require residential land
use restrictions.
• Modify the cleanup goal for xylenes in a decision document.
• Sample for PFAS and 1.4-dioxane in groundwater and take additional
action if necessarv.
Table 7: Status of Recommendations from the 2018 FYR Report
Issue
Recommendations
Current
Status
Current
Implementation
Status Description
Completio
n Date (if
applicable
)
The pump-and-treat
system may not be
effective in reaching
MCLs, and groundw ater
contamination is not fully
delineated but appears to
extend off site.
Complete delineation of
contaminated
groundwater. Determine
the effectiveness of the
remedy and whether
optimization or alternative
actions are needed to meet
RAOs. Once groundwater
delineation is complete,
evaluate the need for off-
site groundwater
institutional controls and
the potential for off-site
vapor intrusion.
Ongoing
AECOM issued the
2021/2022
Groundwater
Delineation Technical
Memorandum in June
2023. Results are
discussed in the Data
Review section of this
FYR.
Not
applicable
12
-------
Issue
Recommendations
Current
Status
Current
Implementation
Status Description
Completio
n Date (if
applicable
)
Institutional controls to
prevent groundwater use
and residential land use
are currently in draft form.
Implement institutional
controls.
Completed
The Declaration of
Institutional
Environmental
Controls restricting
groundw ater use and
residential land use
was recorded for the
two parcels that make
up the site propertv.
9/17/2019
Site decision documents
do not call for residential
land use restrictions, but
they are needed to restrict
residential land use.
Modify the remedy in a
decision document to
require residential land
use restrictions.
Ongoing
The Declaration of
Institutional
Environmental
Controls prohibits
residential land use on
the site parcels, but
residential land use
restrictions have not
been added to the site
remedy in a decision
document.
Not
applicable
The MCL of 10,000 pg/L
for total xylenes in
groundwater is not health
protective; EPA Region 4
recommends a
concentration of 3,500
(ig/L. The PRP compares
groundwater
concentrations to 3,500
(ig/L in its monitoring
reports, but the cleanup
goal has not been updated
in site decision documents.
Modify the cleanup goal
for xylenes in a decision
document.
Ongoing
The PRP currently
compares xylene to
the EPA Region 4
recommendation of
3,500 (ig/L. The EPA
is evaluating whether
to update the xylene
cleanup goal in a
decision document.
Not
applicable
It is unknown if PFAS
were used on-site, but the
potential exists due to the
1979 fire.
Sample for PFAS in
groundwater and take
more action, if necessary.
Ongoing
The EPA and
AECOM have
sampled 16 wells for
PFAS over two
sampling events.
Thirteen of the 16
wells had detections
of PFAS. The EPA
will determine next
steps after further
evaluation of
sampling data.
Not
applicable
13
-------
Issue
Recommendations
Current
Status
Current
Implementation
Status Description
Completio
n Date (if
applicable
)
The 1993 ROD identified
1.1.1 -T C A 11.1.1-
trichloroethane] at the
Site, and 1,4-dioxane was
historically used as a
stabilizer for 1.1.1-TCA. It
is unknown if 1,4-dioxane
is present in site media.
Sample for 1.4-dioxane in
groundw ater and take
additional action, if
necessary.
Completed
in June 2020,
AECOM sampled for
1.4-dioxane in three
surficial aquifer wells.
It was not detected
and was subsequently
removed from the
sampling plan.
10/2/2020
14
-------
IV. FIVE-YEAR REVIEW PROCESS
Community Notification. Community Involvement and Site Interviews
The EPA issued an online news release on October 19, 2022, to announce that the FYR was underway.
A copy of the news release is available online at https ://www. epa. gov/newsrel eases/epa-revi ew-
cleanups-45-southeast-superfund-sites and is included in Appendix D. The results of the review and the
completed FYR Report will be made available on the EPA's site profile page at
https://www.epa.gov/superfund/kalama-specialtv-chemicals. which can also be accessed online from the
Site's information repository, Beaufort County Library, located at 3 11 Scott Street in Beaufort,
South Carolina.
During the FYR process, interviews were conducted to document any perceived problems or successes
with the remedy that has been implemented to date. The interviews are summarized below. Appendix E
includes the completed interview forms.
One resident who lives near the Site was interviewed during the FYR site inspection. She was unaware
of the Site's history or current cleanup activities. Her home uses municipal water. Other nearby residents
were not available for an interview. Site inspection participants also visited the Thomas Concrete plant
next to the Site. No one was available for an interview.
A representative for the SCDHEC felt that the remedy was no longer effective in a cost-efficient and
timely manner. She expressed the need for a new FS to determine a new remedy and additionally stated
that more institutional controls will probably be needed. She felt that the additional delineation work
will have a positive effect on informing future remedy selection for the Site.
Representatives for the O&M contractor for the Site stated that investigations have delineated the extent
of COCs in groundwater, which allows for monitoring of plume stability. They noted that the
groundwater extraction and treatment system operated for about 25 years and removed at least 2,481
pounds of COCs, but that system removal rates had become asymptotic before deactivation. They
recommend optimization of the monitoring programs including the identification of wells that should be
moved from a semi-annual to an annual monitoring schedule based on their locations with respect to the
COC plumes and their historic COC concentrations.
Data Review
Data reviewed for this FYR include semi-annual groundwater data, monthly effluent sampling data
while the extraction and treatment system were operating, PFAS groundwater data from 2020, 2021 and
2022, and the Groundwater Delineation investigation completed June 2023.
Semi-Annual Groundwater Monitoring
PRP contractor AECOM samples site groundwater semi-annually. Sampled wells include surficial
aquifer monitoring wells, surficial aquifer groundwater extraction wells, bedrock aquifer monitoring
wells and an off-property bedrock aquifer industrial water supply well on the Thomas Concrete property
(CW-3). Sample analytes include site COCs and other VOCs as well as field parameters. See Figure 3
for well locations. Analytical results are in Table H-l in Appendix H.
In the surficial aquifer during the period from June 2018 to June 2022, all site COCs were detected at
concentrations that exceed their respective cleanup goals except 1,1-DCE, which was not detected.
Benzene, ethylbenzene, xylenes and 1,2-DCA contamination in the surficial aquifer appears to remain
15
-------
confined to the KSCI property. Plume maps are shown in Figures H-4, H-5, H-6 and H-7, respectively,
in Appendix H. Table 8 lists maximum concentrations of COCs in the surficial aquifer and the number
of wells with COCs exceeding their respective cleanup goals.
Table 8: Annual Maximum Concentrations and Number of Wells Exceeding Cleanup Goals,
Surficial Aquifer
Groundwater
COC
Cleanup
Goal
(ug/L)
2018
2019
2020
2021
2022:l
Benzene
5
Maximum
concentration
(Pg/L)b
(Well)
66.4
(MW-
46A)
54.9
(MW-
46A)
43.9
(MW-
46A)
60.4 J
(EX-04)
112 J
(MW-
56)
# of wells
exceeding"
1
9
6
8
6
Ethylbenzene
700
Maximum
concentration (pg/L)
(Well)
3,890
(MW-53)
4,210
(MW-53)
3,120 J
(MW-53)
2,060
(MW-
53)
1,860
(MW-
53)
# of wells exceeding
2
3
3
3
1
Xylenes
10,000/
3,500d
Maximum
concentration (pg/L)
(Well)
10,300
(MW-53)
11,400
(MW-53)
9,360 J
(MW-53)
6,000
(MW-
53)
5,430 J
(MW-
53)
# of wells exceeding
2
2
2
1
1
1.2-DCA
5
Maximum
concentration (pg/L)
(Well)
151
(MW46A)
166
(MW-
46A)
71.4
(EX-05)
82.1
(EX-05)
59.6
(MW-
46A)
# of wells exceeding
9
9
9
9
6
Methylene
chloride
5
Maximum
concentration (pg/L)
(Well)
10.5
(MW-52)
4.1 J
(EX-05)
2.3 J
(EX-05)
6.9
(EX-04)
ND
# of wells exceeding
2
0
0
1
0
1,1-DCE
7
Maximum
concentration (ng/L)
ND
ND
ND
ND
ND
# of wells exceeding
0
0
0
0
0
Notes:
a. The 2022 values include June 2022 data only, as December 2022 data were not available at the time of
this analysis.
b. Maximum concentration detected in surficial aquifer for each year.
c. The number of surficial aquifer wells exceeding the cleanup goal.
d. The 1993 ROD cleanup goal for xylenes is 10,000 pg/L. However, the 2013 FYR Report recommended a
goal of 3,500 (ig/L. Xylene concentrations have subsequently been compared to this goal.
Bold values exceed their respective cleanup goal.
16
-------
J = estimated value
ND = analyte not detected
Hg/L = micrograms per liter
In the absence of extraction and treatment system pumping, groundwater flow in the surficial aquifer is
to the south-southwest away from the infiltration pond and north-northwest across the rest of the Site.
In the bedrock aquifer, the only COC that has exceeded its cleanup goal is 1,2-DCA. In each year from
2018 to 2021, 1,2-DCA has exceeded its cleanup goal in five or six bedrock wells. In June 2022, seven
wells, one of which was a new well not previously sampled, exceeded the 1,2-DCA cleanup goal of
5 micrograms per liter (|ig/L; see Figure H-8 in Appendix H). The plume of 1,2-DC A extends off the
site property. The highest concentration of 1,2-DCA for each year in this FYR period is in LW-8. The
highest concentration in this well during this FYR period was 635 |ig/L in December 2019 and the
lowest was an estimated value of 136 |ig/L in December 2021.
Five new monitoring wells (LW-10, LW-1 1, LW-12, LW-13 and LW-14, shown in Figure 3) in the
bedrock aquifer that were developed as part of the plume investigation were included in the June 2022
semi-annual monitoring event. 1,2-DCA was not detected in LW-10, LW-1 1 and LW-12. T wo of the
wells (LW-13 and LW-14) were developed on a parcel west (downgradient) of the KSCI property. As
shown in Figure H-8 in Appendix H, the sample from LW-13, which is closer to the KSCI property, had
an estimated 1,2-DCA concentration of 246 |ig/L. 1,2-DCA was not detected in LW-14, which is
further downgradient.
When the extraction and treatment system is active, groundwater flow is influenced by localized low
groundwater elevations near LW-3, LW 14-10 and LW-9 with an apparent groundwater divide between
LW-8 and LW-2 (see Figure H-l 1 in Appendix H). In the absence of pumping for the extraction and
treatment system, groundwater flow is generally to the west and southwest and the divide is no longer
evident (see Figure H-3, Appendix H.)
The 1993 ROD identified 1,1,1-trichloroethane (1,1,1 -TCA) at the Site and 1,4-dioxane was historically
used as a stabilizer for 1,1,1 -TCA. Thus, the 2018 FYR Report recommended sampling for 1,4-dioxane.
In June 2020, AECOM sampled three surficial aquifer monitoring wells for 1,4-dioxane. It was not
detected in any of the samples and was subsequently removed from the sampling plan (detection limit
was 0.15 |ig/L). While no MCL for 1,4-dioxane has been established, EPA risk assessments indicate that
the drinking water concentration representing a 1 x 10"6 cancer risk level for 1,4-dioxane is 0.35 |ig/L.
Groundwater Delineation Investigation
During 2021 and 2022, AECOM installed 10 surficial aquifer borings for collection of vadose zone soil
samples and groundwater screening samples and 14 bedrock aquifer borings for collection of
groundwater screening samples. AECOM also installed three additional surficial aquifer monitoring
wells and five additional bedrock aquifer monitoring wells. Surficial aquifer monitoring wells and
borings were all installed on KSCI property, whereas borings and monitoring wells in the bedrock
aquifer were installed both on the KSCI property and west of the Spanish Moss trail.
As seen in Figure H-l2 in Appendix H, benzene was detected above the cleanup goal in two shallow
aquifer borings on the KSCI property near former plant operations. 1,2-DC A was also detected above
the cleanup goal in two shallow aquifer borings, one near former plant operations and the other north of
the former groundwater treatment building (see Figure H-l 3, Appendix H).
17
-------
Two bedrock aquifer borings two on the KSCI property exceeded the 1,2-DCA cleanup goal, both near
former plant areas. Four borings west of the Spanish Moss Trail also exceeded the 1,2-DC A cleanup
goal (Figure H-14, Appendix H).
Monitoring well results were included in the June 2022 semi-annual monitoring event and are discussed
above. See Figures H-4, H-7 and H-8 in Appendix H for iso-concentration maps of benzene and
1,2-DCA in the shallow aquifer and 1,2-DCA in the bedrock aquifer, respectively.
The borings and new monitoring wells installed and sampled for the groundwater delineation
investigation fully delineated the Site COCs horizontally. Geologic cross-sections with 1,2-DCA
screening sample results are shown in Figures H-15 through H-17, Appendix H. The calcareous clay at
the bottom of deeper borings did not produce much water, but the samples obtained show that the
1,2-DCA plume appears to be limited vertically by this layer.
PFAS
The 2018 FYR Report recommended sampling for PFAS, which is believed to have been sprayed over
the Site in fire-fighting foams in response to the 1979 explosion and fire. In November 2020, the EPA
and AECOM personnel sampled three surficial aquifer wells and three bedrock aquifer wells for PFAS
contamination. PFAS were detected in all wells sampled. Subsequently, in December 2021 and
June 2022, AECOM sampled an additional 12 surficial aquifer wells and six bedrock aquifer wells for
PFAS. All wells had PFAS detections except for three of the surficial aquifer wells (MW-37A on the
southern part of the site property, and MW-41 and MW-41 A, both in the northwestern part of the site
property). Of all three sampling events, the maximum detection of PFOA was 1.14 |ig/L and the
maximum detection of PFOS was 0.596 |ig/L, both in MW-46A in November 2020. Figures showing
locations of the PF AS results from both sampling events in the surficial aquifer and bedrock aquifer are
in Figure H-9 and Figure H-10, respectively, in Appendix H. Analytical results for all wells sampled in
2021 and 2022 are in Table H-2 and Table H-3, respectively, in Appendix H.
The EPA originally issued lifetime drinking water health advisories for perfluorooctanoic acid (PFOA)
and perfluorooctane sulfonic acid (PFOS) in 2016. The advisory level for the total of these substances
combined was 0.070 |ig/L and AECOM compared sampling results to these advisory levels.
In June 2022, the EPA issued updated interim lifetime health advisory levels for PFOA (0.000004 |ig/L)
and PFOS (0.00002 |ig/L), both of which are below the EPA's established minimum reporting level that
can be achieved by most laboratories. Therefore, any detection of PFOA or PFOS is considered an
exceedance of the health advisory.1 The EPA additionally issued a final health advisory for
pert!uorobutanesulfonic acid (PFBS) and its related compound potassium perfluorobutane sulfonate
together (2 |ig/L). AECOM did not sample for potassium perfluorobutane sulfonate. Table 9 compares
analytical results to the updated interim and final health advisories.
1 EPA Technical Fact Sheet: Drinking Water Health Advisories for Four PFAS (PFOA. PFOS. GenX chemicals, and PFBS):
https://www.epa.gov/svstem/files/dociimeiits/2022-06/techiiical-factsheet-foiir-PFAS.pdf.
18
-------
Table 9: PFBS, PFOA and PFOS Concentrations Compared to 2022 Lifetime Health Advisories
Weil:
Sample Date
PFBS (jig/L)
PFOA (jig/L)
PFOS
(Hg/L)
2022 lil'A Health Advisory
Levels:
2"
0.000004h
0.00002b
EX-05
November 2020
0.0551
0.124
0.0535
LW-3
November 2020
0.0739
0.0615
0.0697
LW-8
November 2020
0.0295
0.0396
0.101
LW-9
November 2020
0.0062
0.0111
0.0039 J
MW14-03
November 2020
0.0572
0.244
<0.0019
MW-46A
November 2020
0.387
1.14
0.596
LW-1
December 2021
0.282
0.134
0.452
LW-4
December 2021
0.041
0.246
0.0388
LW-5
December 2021
0.0321
0.0351
0.305
LW-6
December 2021
0.0405
0.191
0.0499
LW-10
December 2021
<0.002
<0.002
<0.002
LW-11
December 2021
0.0083
0.0087
0.177
MW-37
December 2021
0.004
<0.002
<0.002
MW-37A
December 2021
<0.002
<0.002
<0.002
MW-37B
December 2021
0.0046
0.0052
<0.002
MW-38A
December 2021
0.0032 J
<0.0021
<0.0021
MW-41
December 2021
<0.002
<0.002
<0.002
MW-41A
December 2021
<0.0021
<0.0021
<0.0021
MW-42
December 2021
<0.002
<0.002
<0.002
MW-42A
December 2021
0.008
0.0155
0.0075
MW-43
December 2021
0.049
0.0933
0.0914
MW-43A
December 2021
0.0583
0.139
0.182
MW-38
June 2022
0.0049
<0.002
<0.002
MW-38B
June 2022
0.0068
<0.002
0.0561
Notes:
Source: Table 5 and Appendix B of the June 2022 Semi-Annual Groundwater
Monitoring Report. AECOM.
a. Final lifetime health advisory level, issued June 15, 2022.
b. Interim lifetime health advisory level, issued June 15, 2022.
Bold = value exceeds lifetime health advisory level
Italics = value is below the detection limit, but it is not known if the value is above the
health advisory level
(.ig/L = micrograms per liter
J = estimated value
In June 2021, the EPA sampled a well at Thomas Concrete for PFAS.2 The well contained 0.1 |ig/L of
PFOS, 0.013 |ig/L of PFOA, both of which exceed the 2022 health advisory levels, and 0.011 |ig/L of
PFBS. Thomas Concrete uses its private well for production services; the employer provides a portalet
and bottled water to employees. A horse farm adjacent to the concrete facility uses the same well for
2 Site figures indicate three production wells at the Thomas Concrete property: CW-1, CW-2 and CW-3. The PRP's
contractor indicated that the previous business at the Site. Coastal Concrete, disconnect the piping for CW-1 and CW-2. The
wells arc still present but unusable. CW-3 is sometimes referred to as PW03 in analytical sampling data.
19
-------
watering livestock. The EPA also sampled a residential well south of the Site, which contained
0.014 |ig/L of PFOS, an estimated 0.08 |ig/L of PFOA, which also exceed the 2022 health advisories,
and an estimated 0.008 |ig/L of PFBS. The well also contained arsenic and trichloroethylene, which are
not site-related contaminants, above drinking water regional screening levels (RSL). It is unclear if
contamination in the residential well is related to the Site. SCDHEC connected the home to the public
water supply. The home is currently not occupied and the private well has not been abandoned. Full
results can be found in Table H-5 in Appendix H.
Treatment effluent
The groundwater remediation system operated at the Site from 1998 until November 2021, when it was
shut down to prevent the release of PFAS into the infiltration pond. During this FYR period, treatment
system effluent met site cleanup goals.
AECOM sampled treatment effluent for acrolein, a biocide and an intermediate in the synthesis of
acrylic acid, in June 2020 at the request of the EP A. The compound had previously been sampled for but
not in recent reports. Acrolein was not detected in the effluent.
Site Inspection
The site inspection took place on 1 1/14/2022. Participants included EPA RPM Jasmin Jefferies,
Sara MacDonald from the SCDHEC, Scott Ross with PRP contractor AECOM, and Sabrina Foster and
Kimberly Johnson Chase with EP A contractor Skeo. The purpose of the inspection was to assess the
protectiveness of the remedy. The site inspection checklist and site photographs are included in
Appendix F and Appendix G, respectively.
Site inspection participants met on the KSC1 property and proceeded to the groundwater extraction and
treatment facility. The treatment system, which consists of an air stripper, influent and effluent
equalization tanks, an infiltration pond and associated piping and pumps, has been shut down since
November 2021 while PFAS in groundwater is being studied. However, the system is still being
maintained on a weekly basis and the associated land application permit is still in effect. The treatment
building's roof has leaked in heavy rains, but the building is otherwise in good condition. Participants
checked site monitoring and extraction wells. Wells were locked and in good condition.
Participants observed "No Trespassing" signs along the Spanish Moss Trail (a recreation trail west of
the Site) and on Glass Road (north of the Site). Signs were visible and in good shape. There was no
evidence of recent trespassing. Hurricane Ian recently passed through the area; AECOM personnel
reported that there was no damage to the Site.
Site inspection participants visited the fenced infiltration pond. The fence and locked gate surrounding
the pond appeared to be in good condition. Because the extraction and treatment system was not
operating and discharging to the pond, water in the pond was low. The area surrounding the pond had
extensive evidence of use by beavers, including a lodge built under the dock. A "Keep Out" sign at the
gate to the pond clearly marks the pond as an industrial waste lagoon associated with a Superfund site.
An illegal dump site near the infiltration pond noted during the 2018 FYR site inspection has been
cleaned up and 5 tons of waste were removed.
Site inspection participants also visited the property immediately west of the Site, where new monitoring
wells and borings have been installed to fully delineate the groundwater plume. Wells on this property
were locked and in good condition.
20
-------
Participants stopped by the three homes on Glass Road near the infiltration pond to conduct community
interviews. Only one resident was available. Participants also visited the Thomas Concrete plant next to
the Site, but plant operators were not available for an interview.
21
-------
Figure 3: Detailed Site Map
Infiltration
iMl&ncjtk
Mm£H|
MW-fW/
MW;42A
rvun
MW-47A
IMVygM
j. PZ-05
liwiWilllWlieiM
iMWSw
[tlwSl
Thomas
Concrete
Plant
(Msaa
^Skeo
Last Modified: 3/6/2023
U.S. Marine
Corps Air Station
Beaufort
Disclaimer This map and any boundary lines within the map are approximate and subject to
change. The map is not a survey. The map is for informational purposes only regarding the EPA's
response actions at the Site. Map Image is the intellectual property of Esri and is used herein
under license. Copyright © 2020 Esri and its licensors. All rights reserved. Sources: Esri, Maxar,
Microsoft, Maxarthe 2018 FYR Report and the 2022 Semi-Annual Report.
Approximate Site Boundary
Groundwater Treatment Building
Extraction Well (Surficial Aquifer)
Off-Property Production Well
Bedrock Aquifer Monitoring Well
Surficial Aquifer Monitoring Well
*
22
rjfv - -
GKMKJ
N
K
Kalama Specialty Chemicals Super-fund Site
City of Beaufort, Beaufort County, South Carolina
I 1 1
0 500 1,000 Feet
-------
V. TECHNICAL ASSESSMENT
QUESTION A: Is the remedy functioning as intended by the decision documents9
Question A Summary:
The remedy is partially functioning as intended. Excavation and removal of contaminated soil and
sediment to an off-site landfill was implemented successfully. The groundwater extraction and treatment
remedy is not achieving its RAO of preventing off-property migration of groundwater containing
contaminants above MCLs. PRP contractors completed the investigation to delineate site COC plumes
in the surficial and bedrock aquifers in June 2023. Now that delineation work is complete, the EPA will
review the current remedy's effectiveness and assess potential remedial alternatives to achieve RAOs in
a reasonable timeframe more effectively. The PRP's contractor placed the groundwater extraction and
treatment system in standby mode in November 2021 in response to the EPA's request and concern about
PFAS detections. Site O&M procedures appear adequate, and the treatment system is well maintained.
The R AO of preventing ingestion of contaminated groundwater has been achieved, as site groundwater
is not in use, neighboring businesses and homes are connected to the public water supply, and water
from the private well at the Thomas Concrete facility is used for non-potable industrial purposes only.
The source control RAOs were achieved with the soil remedial action.
Institutional controls were implemented in 2019 to prevent groundwater use and residential land use (see
Appendix K). While site decision documents call for groundwater use restrictions, they do not call for
residential land use restrictions. A site decision document will need to be updated to include residential
land use restrictions as part of the EPA's selected site remedy. In addition, contaminated groundwater
extends off the site property. The need for off-property groundwater institutional controls should be
evaluated now that groundwater delineation work is completed.
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels and RAOs used at the time
of the remedy selection still valid9
Question 6 Summary:
Most of the cleanup goal s for the Site remain valid. Applicable or relevant and appropriate requirements
(ARARs) for groundwater were reviewed; there have been no changes in MCLs or state standards since
the 1993 ROD (Appendix I). The 1993 ROD did not specify chemical-specific ARARs for soil. A
screening-level risk evaluation was conducted by comparing the soil and sediment cleanup goals to the
EPA's residential and industrial regional screening levels (RSLs) (Appendix J). Cleanup goals for soil
and sediment COCs, which are based on industrial use, remain valid. Institutional controls restrict
residential land use on the site property, which would present an unacceptable risk to human health.
The MCL of 10,000 |ig/L for total xylenes is no longer considered health protective due to a change in
the EPA toxicity values (noncarcinogenic reference dose and reference concentration). Based on the
current toxicity assessment and standard drinking water exposure assumptions (including EPA Region 4
assumptions for exposure to volatilized chemicals while showering), EPA Region 4 recommends a
concentration of 3,500 |ig/L as a health-protective remedial level for total xylenes in groundwater.
Further, using the current total xylenes toxicity values and appropriate exposure inputs for tap water, a
health protective concentration of 660 |ig/L is derived for total xylenes in groundwater. The PRP
currently compares groundwater concentrations to the EPA Region 4 recommended value of 3,500 |ig/L
in monitoring reports, but the cleanup goal should also be updated in a site decision document. The
23
-------
groundwater cleanup goals for all other COCs remain valid and are protective to human health since ICs
are in place that prevent groundwater use.
PFAS were identified as a potential emerging COC for the Site in the 2018 FYR Report. From 2020
through 2022, the EPA and AECOM sampled 24 wells for PF AS. In the bedrock aquifer, eight of the
nine wells sampled exceeded EPA's 2022 updated lifetime health advisory levels for both PFOA and
PFOS. Of the 15 surficial aquifer wells sampled, seven wells exceeded the PFOA health advisory level,
and six wells exceeded the PFOS health advisory level.
A screening-level risk review (see Table J-5 in Appendix J) found maximum detected concentrations of
PFOS, PFOA and perfluorohexanesulfonic acid exceeded the EPA's n on cancer hazard quotient (HQ) of 1
(PFOS and PFOA exceeded it by more than an order of magnitude). The maximum detected
concentration of PFOA (1.14 |ig/L), the only PFAS chemical with an established screening level based
on cancer risk, fell within the EPA's cancer risk management range of 1 x 10"4 to 1 x 10"6. The Site's
groundwater extraction and treatment system is currently offline, to prevent the discharge of PFAS-
contaminated water to the infiltration pond. Following PFAS groundwater plume delineation, the EPA
will determine next steps to address PF AS-contaminated groundwater.
This FYR performed a screening-level vapor intrusion evaluation using the EPA's 2022 Vapor Intrusion
Screening Level (V1SL) calculator. It used groundwater data from this FYR period to assess the
potential effect of groundwater VOCs on indoor air in potential future structures on the property, based
on commercial/industrial uses (see Appendix J). Because institutional controls are in place that restrict
residential land use, only commercial/industrial use was evaluated. The results of the conservative
screening-level analysis show that the vapor intrusion exposure pathway may pose unacceptable risks if
a commercial building were to be constructed and occupied over the area of the Site near surficial
aquifer monitoring well MW-53 (see Figure 3). The vapor intrusion pathway should be re-evaluated
prior to any future proposed development on the site property.
As part of a 2019 limited human health risk assessment, AECOM evaluated the vapor intrusion pathway
at well CW-3 on the off-site Thomas Concrete property and did not identify any unacceptable risks. This
FYR Report repeated this evaluation because a higher concentration of 1,2-DCA was detected in
June 2022 (see Table J-4 in Appendix J). No unacceptable risks were identified.
QUESTION C : Has any other information come to light that could call into question the protectiveness
of the remedy9
No other information has come to light that could call into question the protectiveness of the remedy.
24
-------
VI. ISSUES/RECOMMENDATIONS
I ssues/Recom men dalions
GlJ(s) without Issues/Recommendations Identified in the FYR:
None.
Issues and Recommendations Identified in the FYR:
OU(s): OU-1
(Sitewide)
Issue Category: Other
Issue: Groundwater sampling has detected PFAS concentrations in groundwater
in excess of the EPA's lifetime health advisory level in both the surficial
and bedrock aquifers. The groundwater extraction and treatment system is
currently offline to prevent the discharge of PF AS-contaminated water to the
infiltration pond.
Recommendation: Following groundwater plume delineation and identification
of source area(s). evaluate remedial alternatives to address PFAS contamination
and select a remedy in a decision document.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
EPA
EPA/State
9/28/2025
OU(s): OU-1
(Sitewide)
Issue Category: Remedy Performance
Issue: Contaminant concentrations in the surficial aquifer reduced substantially while the
pump-and-treat system was in operation; however, contaminant concentrations in the
bedrock aquifer have increased in some cases. Groundwater contamination in the deep
aquifer extends off the KSCI property, and after over 20 years of groundwater extraction
and treatment, groundwater on KSCI property has not met MCLs.
Recommendation: Determine the effectiveness of the remedy and whether
optimization or alternative remedial approaches are needed to achieve RAOs.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
PRP
EPA/State
9/28/2025
25
-------
OU(s): OU-1
(Sitewide)
Issue Category: Institutional Controls
Issue: The potential exposure pathways to groundwater contamination in off-
property parcels are unknown.
Recommendation: Evaluate the need for off-property groundwater
institutional controls.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
PRP
EPA/State
9/28/2025
OU(s): OU-1
(Sitewide)
Issue Category: Monitoring
Issue: The MCL of 10,000 (ig/L for total xylenes in groundwater is not health
protective; EPA Region 4 recommends a concentration of 3,500 (ig/L. The PRP
compares groundw ater concentrations to 3,500 (ig/L in its monitoring reports, but
the cleanup goal has not been updated in site decision documents.
Recommendation: Modify the cleanup goal for xylenes in a decision document.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
EPA
EPA/State
9/28/2024
OU(s): OU-1
(Sitewide)
Issue Category: Institutional Controls
Issue: The 2019 Declaration of Institutional Environmental Controls restricts
residential land use at the Site. Site decision documents do not call for residential
land use restrictions, but they are needed to restrict residential land use.
Recommendation: Modify the remedy in a decision document to require
residential land use restrictions.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
EPA
EPA/State
9/28/2024
26
-------
VII. PROTECTIVENESS STATEMENT
Si lew idc I'roli'cliM'iii'ss Sl;ili'iiii'iil
Protectiveness Determination:
Short-term Protective
Protectiveness Statement:
The remedy at the Site currently protects human health and the environment because contaminated soil
and sediment were excavated and disposed of at an off-site landfill. While the groundw ater extraction
and treatment system is not currently operational, no known exposure pathways to contaminated
groundwater are complete. Additionally, institutional controls are in place to restrict use of groundwater
on the site property and to ensure that land use on the site property remains industrial. For the remedy to
be protective over the long term, the follow ing actions need to be taken:
• Following groundwater plume delineation, evaluate remedial alternatives to address PFAS
contamination and select a remedy in a decision document.
• Delineate the PFAS plume, coordinate with area stakeholders to identify the source(s) of PFAS
contamination and determine a remedial approach.
• Determine the effectiveness of the remedy and whether optimization or alternative remedial
approaches are needed to achieve RAOs.
• Evaluate the need for off-property groundwater institutional controls.
• Modify the cleanup goal for xylenes in a decision document.
• Modify the remedy in a decision document to require residential land use restrictions.
VIII. NEXT REVIEW
The next FYR Report for the Kalama Specialty Chemicals Superfund site is required five years from the
completion date of this review.
27
-------
APPENDIX A - REFERENCE LIST
Explanation of Significant Differences, Kalama Specialty Chemicals Superfund Site. EPA Region 4.
September 2016.
December 2018 Semi-Annual Groundwater Monitoring Report, Goodrich Corporation, Kalama
Specialty Chemicals Site. Prepared by AECOM Technical Services for Raytheon Technologies
Corporation. March 15, 2019.
December 2019 Semi-Annual Groundwater Monitoring Report, Goodrich Corporation, Kalama
Specialty Chemicals Site. Prepared by AECOM Technical Services for Raytheon Technologies
Corporation. March 31, 2020.
December 2020 Semi-Annual Groundwater Monitoring Report, Goodrich Corporation, Kalama
Specialty Chemicals Site. Prepared by AECOM Technical Services for Raytheon Technologies
Corporation. March 19, 2021.
December 2021 Semi-Annual Groundwater Monitoring Report, Goodrich Corporation, Kalama
Specialty Chemicals Site. Prepared by AECOM Technical Services for Raytheon Technologies
Corporation. May 27, 2022.
Drinking Water Health Advisories for PFAS: Face Sheet for Public Water Systems. EPA. June 2022.
Available at: www.epa.gov/svstem/files/documents/2022-06/drinking-water~ha-pfas-factsheet-water~
svstem.pdf
Field Investigation Report, United Technologies Corporation, Kalama Specialty Chemicals Site.
AECOM Technical Services. April 21, 2016
Fourth Five-Year Review Report for Kalama Specialty Chemicals Superfund Site, Beaufort County,
South Carolina. EPA Region 4. September 2018.
Groundwater Delineation Work Plan, United Technologies Corporation, Kalama Specialty Chemicals
Site. AECOM Technical Services. July 25, 2016
Groundwater Delineation Work Plan Addendum, Revision 4, Kalama Specialty Chemicals, Inc. Site,
Beaufort, South Carolina. Prepared by AECOM. June 3, 2022.
June 2019 Semi-Annual Groundwater Monitoring Report, Goodrich Corporation, Kalama Specialty
Chemicals Site. Prepared by AECOM Technical Services for Raytheon Technologies Corporation.
September 13, 2019.
June 2020 Semi-Annual Groundwater Monitoring Report, Goodrich Corporation, Kalama Specialty
Chemicals Site. Prepared by AECOM Technical Services for Raytheon Technologies Corporation.
October 2, 2020.
June 2022 Semi-Annual Groundwater Monitoring Report, Goodrich Corporation, Kalama Specialty
Chemicals Site. Prepared by AECOM Technical Services for Raytheon Technologies Corporation.
January 24, 2023.
A-l
-------
June 2022 Semi-Annual Groundwater Monitoring Report, Goodrich Corporation, Kalama Specialty
Chemicals Site. Prepared by AECOM Technical Services for Raytheon Technologies Corporation.
September 30, 2021.
Limited Human Health Risk Assessment for Kalama Specialty Chemicals Site. Prepared by AECOM.
August 30, 2019
Monthly Report, August 2022, Kalama Specialty Chemicals Site. Prepared by AECOM.
September 9, 2022.
Monthly Report, July 2022, Kalama Specialty Chemicals Site. Prepared by AECOM. August 8, 2022.
Monthly Report, June 2022, Kalama Specialty Chemicals Site. Prepared by AECOM. July 8, 2022.
Monthly Report, May 2022, Kalama Specialty Chemicals Site. Prepared by AECOM. June 10, 2022.
Monthly Report, October 2022, Kalama Specialty Chemicals Site. Prepared by AECOM.
November 7, 2022.
Monthly Report, September 2022, Kalama Specialty Chemicals Site. Prepared by AECOM.
October 10, 2022.
O&M Manual, Groundwater Remediation System, Kalama Specialty Chemicals Superfund Site,
Beaufort, South Carolina. UTC. July 2016, revised February 2017.
Private Wells Sampling Investigation Report, Kalama Specialty Chemicals Site. Laboratory Services
and Applied Science Division, EPA Region 4. August 4, 2021.
Quality Assurance Project Plan. Former Kalama Specialty Chemicals, Inc. Superfund Site, Beaufort,
South Carolina. Prepared by AECOM for Raytheon Technologies Corporation. October 2014, revised
August 2020.
Record of Decision: Kalama Specialty Chemicals, Beaufort, SC. EPA Region 4. September 28, 1993.
Remedial Construction and Initial Remedial Action, Kalama Specialty Chemical, Inc. Foster Wheeler
Environmental Corporation. March 13, 1998.
Remedial Investigation Report for Kalama Specialty Chemicals, Inc. Study Area. Prepared by Post,
Buckley, Schuh & Jernigan, Inc. December 1990.
Technical Memorandum: 2021/2022 Groundwater Delineation, Kalama Specialty Chemicals Site.
Prepared by AECOM. June 16, 2023.
A-2
-------
APPENDIX B - CURRENT SITE STATUS
- Current human exposures at the Site arc under control.
- The 2021/2022 groundwater delineation investigation confirmed that groundwater contamination has migrated
off site.
Aro \oooss;in I nsl i I u I ion ;i I Controls in Phioo"
S All O Some O None
At the time of drafting this FYR Report, all necessary institutional controls on the KSCI property for the Site are
in place. The groundwater delineation investigation conducted in 2021 and 2022, found that site COCs extend off
the KSCI property. More institutional controls may be needed for off property parcels affected by groundwater
contamination.
[~
Mas (ho KPA l)osi lor Anlicipiilod I so?
Yes M No
Mas die Silo lioon Put into Ron so'
~ Yes No
B-l
-------
APPENDIX C - SITE CHRONOLOGY
Table C-l: Site Chronology
Event
Date
Vega Chemicals operated at the Site
1973
KSCI bought Vega Chemicals
1978
Laboratory equipment caught fire and caused an on-site explosion
January 1979
The SCDHEC discovered on-site contamination
November 1, 1979
The EPA conducted a preliminary assessment
April 1. 1980
The EPA and the SCDHEC conducted site inspections
December 1, 1980
The EPA proposed the Site for listing on the NPL
September 8, 1983
The EPA finali/cd the Site's listing on the NPL
September 21, 1984
The EPA issued a Special Notice to KSCI
June 26, 1987
The EPA entered into an Administrative Order on Consent with KSCI
The PRP began the Site's RI/FS
January 13, 1988
The EPA initiated an adininistrativc/voluntarv cost recovcrv
September 27, 1991
The EPA conducted a removal assessment
August 21. 1992
The EPA conducted an ecological risk assessment
The PRP conducted a risk/health assessment
January 15, 1993
The PRP completed the RI/FS
The EPA issued the OU-1 ROD
September 28, 1993
The PRP began remedial designs for excavation and the extraction and
treatment svstem
August 9, 1994
The EPA and the PRP signed a Consent Decree
The PRP agreed to conduct the Site's remedial design and
remedial action
December 29. 1994
The PRP completed the excavation remedial design and began the
remedial action
April 1996
The PRP completed extraction and treatment system construction and
began operating it full time
February 1998
The EPA designated the Site's remedy as construction complete and
prepared the Preliminary Close-Out Report
June 29, 1999
The PRP completed the remedial action
July 30, 1999
The SCDHEC issued a land application permit to Goodrich Corporation
October 1, 2001
The EPA issued the Site's first FYR Report
April 29, 2003
The EPA issued the Site's second FYR Report
Julv 2, 2008
Hart & Hickman (PRP contractor) submitted a vapor intrusion
assessment response
December 1, 2009
The EPA issued the Site's third FYR Report
June 25, 2013
The PRP submitted an Institutional Control Implementation Plan
April 2014
The PRP submitted the 2015 Field Investigation Report
April 21. 2016
The EPA issued an ESD to include institutional controls as part of the
site reincdv
September 2016
The PRP submitted a Pulsing Strategv Technical Memorandum
February 23, 2018
The EPA issued the Site's fourth FYR Report
September 28, 2018
A Declaration of Institutional Environmental Controls is filed
September 17, 2019
Groundwater delineation investigation field work began
October 2020
PFAS is first detected in groundwater on the KSCI property in excess of
the EPA's lifetime health advisory levels
November 2020
The groundwater extraction and treatment system is deactivated in
response to the PFAS detection in groundwater
November 2021
The PRP submitted a Groundwater Delineation Technical Memorandum
confirming that groundwater COCs extend off the KSCI property
June 2023
C-l
-------
APPENDIX D - PRESS NOTICE
VIRONMENTAL PROTECTION AGENCY
NEWS RELEASE
EPA.GOV/NEWSROOM
EPA to Review Cleanups at 45 Southeast Superfund Sites
Contact Information: reqion4press@epa.gov. 404-562-8400
ATLANTA (Oct. 19, 2022)-Today, the U.S. Environmental Protection Agency (EPA) announced that
comprehensive reviews will be conducted of completed cleanup work at 45 National Priorities List (NPL)
Superfund sites in the Southeast.
The sites, located in Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and
Tennessee, will undergo a legally required Five-Year Review to ensure that previous remediation efforts at the
sites continue to protect public health and the environment.
"The Southeast Region will benefit tremendously from the full restoration of Superfund sites, which can become
valuable parts of the community landscape," said EPA Region 4 Administrator Daniel Blackmon. "The Five-
Year Review evaluations ensure that remedies put in place to protect public health remain effective overtime."
The Superfund Sites where EPA will conduct Five-Year Reviews in 2022 are listed below. The web links provide
detailed information on-site status as well as past assessment and cleanup activity. Once the Five-Year Review is
complete, its findings will be posted in a final report at https://www.epa.gov/superfund/search-superfund-five-vear-
re views.
Alabama
Alabama Army Ammunition Plant https://www.epa.oov/superfund/alabama-armv-ammunition-plant
Alabama Plating Company, Inc. https://www.epa.qov/superfund/alabama-platinq-co
Mowbray Engineering Co. https://www.epa.oov/superfund/mowbrav-enqineerinq
US NASA Marshall Space Flight Center
US Army/NASA Redstone Arsenal https://www.epa.oov/superfund/redstone-aresenal
Florida
ALARIC Area GW Plume https://www.epa.gov/superfund/alaric-area-qroundwater-plume
Beulah Landfill https://www.epa.gov/superfund/beulah-landfill
Chevron Chemical Co. (Ortho Division) https://www.epa.gov/superfund/chevron-chemical-companv
Florida Petroleum Reprocessors https://www.epa.gov/superfund/fiorida-petroleum-reprocessors
Miami Drum Services https://www.epa.gov/superfund/miami-drum-services
Pensacola Naval Air Station https://www.epa.gov/superfund/naval-air-station-pensacola
Raleigh Street Dump https://www.epa.gov/superfund/raleigh-street-dump
Taylor Road Landfill https://www.epa.gov/superfund/tavlor-road-landfiil
Tower Chemical Co. https://www.epa.gov/superfund/tower-chemical-companv
Georgia
Alternate Energy Resources Inc. https://www.epa.gov/superfund/alternate-energy-resources
Peach Orchard & Nutrition Co. Rd PCE Groundwater Plume Site https://www.epa.gov/superfund/peach-orchard-
road-pce-plume
Powersville Site https://www.epa.gov/superfund/powersville-site
T.H. Agriculture & Nutrition Co (Albany Plant) https://www.epa.gov/superfund/t-h-agriculture
Kentucky
A.L. Taylor (Valley of the Drums) https://www.epa.gov/superfund/al-tavlor-vallev-of-drums
Brantley Landfill https://www.epa.gov/superfund/brantlev-landfill
Distler Brickyard https://www.epa.gov/superfund/distler-brickvard
D-l
-------
Distler Farm https://www.epa.gov/superfun https://www.epa.aov/superfund/lee-lane-landfilld/distler-farm
Lee's Lane Landfill https://www.epa.aov/superfuncl/lee-lane-lanclfill
National Electric Coil Co./Cooper Industries https://www.epa.gov/superfund/national-electric-coil-cooper-
industries
Tri City Disposal Co. https://www.epa.qov/superfund/tri-citv-disposal
North Carolina
ABC One Hour Cleaners https://www.epa.oov/superfund/abc-one-hour-cleaners
Aberdeen Pesticide Dumps https://www.epa.gov/superfund/aberdeen-contaminated-groundwater
Benfield Industries, Inc. https://www.epa.gov/superfund/benfieM-industries
Cherry Point Marine Corps Air Station https://www.epa.gov/superfund/cherrv-point-niarine-corps
CTS of Ashville, Inc. https://www.epa.gov/superfund/cts-millsgap
GEIGY Chemical Corp (Aberdeen Plant) https://www.epa.gov/superfund/ciba-geigy-corporation
Gurley Pesticide Burial https://www.epa.gov/superfund/gurlev-pesticide-burial
North Carolina State University (Lot 86, Farm Unit #1) https://www¦epa.gov/superfund/north-carolina-state-
universitv
Sigmon's Septic Tank Service https://www.epa.gov/superfund/sigmon-septic-tank
South Carolina
Admiral Home Appliances https://www.epa.gov/superfund/admiral-home-appliances
Beau nit Corp (Circular Knit & Dyeing Plant) https://www.epa.gov/superfund/beaunit
Carolawn Inc. https://www.epa.gov/superfund/carolawn
Elmore Waste Disposal https://www.epa.gov/superfund/elmore-waste-disposal
International Minerals and Chemicals (IMC) https://www.epa.gov/superfund/imc
Kalama Specialty Chemicals https://www.epa.gov/superfund/kalama-specialtv-chemicals
Koppers Company, Inc. (Charleston Plant) https://www.epa.gov/superfund/koppers-charleston-plant
Savannah River Site (USDOE) https://www.epa.gov/superfund/savannah-river-site
SCRDI Bluff Road https://www.epa.gov/superfund/scrdi-dixiana
Tennessee
Mallory Capacitor Co. https://www.epa.gov/superfund/mallorv-capacitor
Memphis Defense Depot (DLA) https://www.epa.gov/superfund/memphis-defense-depot
Background
Throughout the process of designing and constructing a cleanup at a hazardous waste site, EPA's primary goal is
to make sure the remedy will be protective of public health and the environment. At many sites, where the remedy
has been constructed, EPA continues to ensure it remains protective by requiring reviews of cleanups every five
years. It is important for EPA to regularly check on these sites to ensure the remedy is working properly. These
reviews identify issues (if any) that may affect the protectiveness of the completed remedy and, if necessary,
recommend action(s) necessary to address them.
There are many phases of the Superfund cleanup process including considering future use and redevelopment at
sites and conducting post cleanup monitoring of sites. EPA must ensure the remedy is protective of public health
and the environment and any redevelopment will uphold the protectiveness of the remedy into the future.
The Superfund program, a federal program established by Congress in 1980, investigates and cleans up the most
complex, uncontrolled or abandoned hazardous waste sites in the country and endeavors to facilitate activities to
return them to productive use. In total, there are more than 280 Superfund sites across the Southeast.
More information:
EPA's Superfund program: https://www.epa.gov/superfund
o©<§®
D-2
-------
APPENDIX E - INTERVIEW FORMS
KALAMA SPECIALTY CHEMICALS SUPERFUND SITE
FIVE-YEAR REVIEW INTERVIEW FORM
Site Name: Kalania Specialty Chemicals
EPA ID: SCD094995503
Interviewer name:
Subject name: Sara MacDonald
Interview date: 12/15/2022
Interview location:
Interview format (circle one): In Person
Interview category: State Agency
Interviewer affiliation:
Subject affiliation: SCDHEC
Interview time: 10:30 A.M.
Phone Mail Email Other:
1. What is your overall impression of the project, including cleanup, maintenance and reuse
activities (as appropriate)9
The current chosen remediation method has reached asymptotic levels and is no longer effective
in a cost-efficient and timely manner. There are wells with no clear indications of a decreasing
trend and some have indications of a possible increasing trend. Changes to the remedial method
are needed. In addition, the site currently has no remediation occurring as the treatment system
was turned off to prevent making site conditions worse due to additional contaminants found
since the last FYR.
However, despite a nonworking system, we have completed additional delineation work that was
much needed and will have a positive impact on the Site's future chosen remedy.
2. What is your assessment of the current performance of the remedy in place at the Site9
The current chosen remediation method does not appear to be effective in a cost-efficient and
timely manner. In addition, we are now aware of additional contamination (PFAS) that was not
being treated by the system. Therefore, the chosen remedy for the Site is not working and a new
feasibility study needs to be completed to assess the best path forward to reach remedial goals for
all site COCs.
3. Are you aware of any complaints or inquiries regarding site-related environmental issues or
remedial activities from residents in the past five years9
August 12, 2019: Received an inquiry from the SCDHEC"s underground storage tank program
about a historical petroleum release at the nearby EN market gas station, located at 3076 Trask
Parkway in Beaufort, South Carolina. To move toward a conditional no further action decision
for the release, a deep bedrock well at the gas station was needed. Gave additional information
on LW-1 and other deep wells at the Site.
August 30, 2019: Received contact from Tanner Powell at Beaufort County Public Works (843-
E-l
-------
255-2735). The county had some issues with UTC3 and AECOM coming onto its property and
wanted an explanation as to why they requested access. Also informed the SCDHEC of
additional wells on its property and asked that these wells be used, as opposed to new wells
being drilled. Informed them that we do not know enough about these wells (locations, well
depths) to use them comfortably for our investigation. Beaufort County Public Works asked us
for additional information on these wells, which we do not have at this time.
September 12, 2019: Beaufort County Public Works: Talked with Chris Inglese from Beaufort
County Public Works about access to the Beaufort County property. He said that the wells on the
property were SCDHEC wells and wanted more information about them. Later found out these
wells were installed by the SCDHEC in the 1980s as part of a research project for the recharge
zone in this area.
October 16, 2019: Conducted a site visit to inspect the former Beaufort Landfill and locate
monitoring wells. Only eight monitoring wells were located - five monitoring wells and one
piezometer were installed downgradient of landfill for hydrological study. Conducted a partial
water supply well survey and located more water supply wells than indicated in SCDHEC
records. This also indicated that there are residents drinking groundwater in the area who were
not identified previously.
November 12, 2019: Conducted a windshield well survey to determine if there are possible
drinking water wells in the area. Found a number of wells and asked AECOM to confirm.4
August 8, 2021: Letter sent to residents at 49 Shanklin Rd discussing their contaminated well
results and the need for resampling. The SCDHEC organized and helped pay for this resident to
be connected to the city water system.5
December 8, 2022: A public meeting was held for the nearby site Marine Corp Air Station
Beaufort and its findings of PFAS on its site. Officials are requesting that local residents inform
them of wells that may need to be sampled.
4. Has your office conducted any site-related activities or communications in the past five years9 If
so, please describe the purpose and results of these activities.
Yes, multiple different types of activities including: working on institutional control documents,
water supply well surveys, investigation of nearby sites (Beaufort County landfill. Independent
Nail, Parker Metal, Lobeco) and how they could impact the Kalatna Specialty Chemical Site,
multiple site visits to oversee site delineation work, communication with a resident for public
water access, multiple conference calls with the EPA as well as coordinating and exchanging
information with other SCDHEC programs (Marine Corps Air Station Beaufort, Bureau of Water
3 U nitcd Technologies Corporation, now Raytheon Technologies. They had sought access to county property in support of the
groundwater delineation investigation.
4 Investigations into wells within one mile of the site resulted in sampling of two active wells, one at a residence and one at
Thomas Concrete. The residential well contained PFAS in excess of the 2016 (and 2022 updated) lifetime health advisory
levels, as well as arsenic and trichlorocthylcnc above RSLs. Arsenic and trichlorethylcnc arc not site-related contaminants.
The well at Thomas Concrete contained PF AS in excess of the 2016 (and 2022 updated) lifetime health advisory level and
1,2-DCA in excess of the drinking water RSL.
5 In March 2023, SCDHEC received confirmation that the property owners have vacated the property and plan to put the
home up for sale. The meter has yet to be plumbed to the home.
E-2
-------
land application. Bureau of Water National Pollutant Discharge Elimination System and
Underground Storage Tanks), and the usual review of O&M reports and semi-annual reports.
5. Are you aware of any changes to state laws that might affect the protectiveness of the
Site's remedy9
In May 2022, legislation (SC H.4999) was passed regarding the implementation of site-specific
cleanup goals. The SCDHEC is working toward determining how best to implement that at
affected sites.
6. Are you comfortable with the status of the institutional controls at the Site9 If not, what are the
associated outstanding issues9
Declarations of Restrictive Covenants have been recorded in the past five years. However,
further delineation has been completed and has identified additional contaminated properties that
will need institutional controls.
7. Are you aware of any changes in projected land use(s) at the Site9
I am not aware of any changes in projected land use at the Site.
8. Do you have any comments, suggestions or recommendations regarding the management or
operation of the Site's remedy9
The SCDHEC, the EPA and the PRP need to figure out as a team a path forward that will address
all site contaminants with a timely and cost-effective remedy. This may involve additional
investigation/delineation work and an FS.
9. Do you consent to have your name included along with your responses to this questionnaire in
the FYR Report9
Yes.
E-3
-------
KALAMA SPECIALTY CHEMICALS SUPERFUND SITE
FIVE-YEAR REVIEW INTERVIEW FORM
Site Name: Kalania Specialty Chemicals
EPA ID: SCD094995503
Interviewer name:
Interviewer affiliation:
Subject name: Scott Ross/Leslee Alexander
Subject affiliation: AECOM
Subject contact information: scott.ross@aecom.com lesiee.aiexander@aecom.com
Interview date: 03/31/2023
Interview time:
Interview location:
Interview format (circle one): In Person
Phone
Mail
Other:
Interview category: O&M Contractor
1. What is your overall impression of the project, including cleanup, maintenance and reuse activities
(as appropriate)9
The investigation efforts completed at the Site have delineated the extent of the COCs in
groundwater. Long-term operation of the groundwater extraction and treatment system was effective
in removing a substantial amount of contaminant mass from the subsurface and has reduced the
aerial extent of impact within the shallow groundwater, keeping the extent of impact to within the
Site property boundaries.
The areas of highest impact (including concentrations of benzene, 1,2 DC A, ethylbenzene, and
xylenes) in shallow groundwater have been delineated. Recently completed delineation efforts for
deeper groundwater (limestone aquifer) have determined that 1,2 DC A is present above its cleanup
goal in an area beneath the Site and to the southwest, beneath two adjoining properties. These
investigation efforts have increased the protectiveness of the remedy by providing comprehensive
delineation and allowing for continued monitoring of plume stability. The Site remains vacant with
no plans for redevelopment and existing land use restrictions provide protectiveness for potential
future on-site exposures.
2. What is your assessment of the current performance of the remedy in place at the Site9
The groundwater extraction and treatment system operated for approximately 25 years, focused on
reducing the intensity and extent of COCs in shallow groundwater, and removed at least 2,481
pounds of COCs. By 2013, operation of the system had significantly reduced COC concentrations in
shallow groundwater. However, despite efforts to optimize remedy performance, system mass
removal rates became asymptotic between 2013 and 2021. As of June 2022, concentrations of 1,2-
DCA, benzene, ethylbenzene, and xylenes exceed clean-up goals in shallow monitoring wells on-
site. However, the remaining concentrations are relatively minimal and have been fully delineated to
within the Site boundary.
Despite significant COC reductions in shallow groundwater, concentrations of 1,2-DCA continue to
exceed the MCL in the deeper limestone aquifer within the Site and off-Site to the southwest. Based
on historical monitoring trends and the configuration of the plume, operation of the treatment system
does not appear to represent an efficient or effective remedy for 1,2-DCA in limestone. Given the
E-4
-------
recent installation of several limestone monitoring wells at the site, further monitoring is warranted
to assess 1,2-DCA plume conditions and trends.
3. What are the findings from the monitoring data9 What are the key trends in contaminant levels that
are being documented over time at the Site9
The historic groundwater quality data are provided in Appendix B of the semi-annual monitoring
reports. The July 2022 Semi-Annual Monitoring Report is the most recent report available.
The primary COC identified in groundwater is 1,2-DCA, which exceeds the MCL in both shallow
and limestone monitoring wells at the Site. Isolated MCL exceedances of BTEX and methylene
chloride have also been detected in shallow monitoring wells.
Shallow monitoring well trends:
• Between 2000 and 2013, the treatment system operations resulted in significant decreases in
COCs in shallow groundwater, including several orders of magnitude concentration
decreases in wells EX-04, EX-05, EX-06, EX-07, EX-08, EX-09/EX-09R, EX-10, EX-1 1,
EX-12, EX-13, and MW-46A.
• By 2013, treatment system mass removal appeared to reach asymptotic conditions.
Optimization efforts, including pulsing, were implemented to improve treatment to the
degree feasible. However, COC concentrations remained relatively stable between 2013
and 2021.
• The system was deactivated in November 2021. Since November 2021, concentrations have
generally remained stable. In some cases, however, COC concentrations appear to have
decreased following system deactivation (EX-04, EX-05, EX-06, EX-09R, and EX-13).
• As of June 2022, 1,2-DC A concentrations in shallow groundwater are minimal, with MCL
exceedances (i.e., greater than 5 ug/L) observed only in wells EX-04, EX-05, EX-07, EX -08,
MW-14-03, and MW-46A. In addition, only one well (MW-46A) exhibited a concentration
of 1,2-DCA greater than 1 OX the MCL (59.6 ug/L in June 2022) and the historical 1,2-DCA
concentration trend for this well is decreasing.
• As of June 2022, benzene concentrations in shallow groundwater are minimal, with MCL
exceedances (i.e., greater than 5 ug/L) observed only in wells EX -07, EX -08, MW-14-03,
MW-46A, MW-53, and MW-56. In addition, only one well (MW-56) exhibited a
concentration of benzene greater than 1 OX the MCL (112 J ug/L in June 2022). MW-56
is a new well and further monitoring is proposed to assess benzene concentration trends in
this well.
• As of June 2022, ethylbenzene and total xylene concentrations exceed the clean-up goals of
700 ug/L and 3,500 ug/L, respectively, in only one well (MW-53). Methylene chloride and
toluene no longer exceed the MCLs in any Site wells.
• As of June 2022, 1,2-DC A, BTEX, and methylene chloride concentrations in shallow
groundwater are relatively minimal and are fully delineated within the Site boundary.
Limestone monitoring well trends:
• Prior to 2010, the only impacted limestone monitoring well with significant historical
monitoring data was LW-03. Between 2000 and 2013, 1,2-DCA concentrations in this well
gradually decreased but remained between 1 OX and 100X the MCL.
E-5
-------
• Limestone wells LW-08 and LW-09 have been monitored since 2010 and exhibit 1,2-DCA
MCL exceedances. Between 2010 and 2013, 1,2-DCA concentrations in these wells were
generally stable. Limestone wells LW-14-10 and LW-14-1 1 have been monitored since 2015
and have exhibited 1,2-DC A concentrations that exceed the MCL but are lower than in
LW-03 and appear to represent the outer northwest edge of the plume.
• Treatment system optimization efforts, including pulsing, were implemented to improve
treatment to the degree feasible. However, between 2013 and 2021, 1,2-DC A concentrations
were generally stable in LW-3, LW-8, LW-9, LW-14-10, and LW-14-1 1.
• The treatment system was deactivated in November 2021. Since November 2021, 1,2-DCA
concentrations have generally remained stable in limestone wells LW-8, LW-9, and
LW-14-10. Recent 1,2-DCA concentration decreases have been observed in LW-03 and
LW-14-1 1 but further monitoring is necessary to assess these trends.
• Several new limestone monitoring wells were installed in 2022 and sampled for the first time
in June 2022.
• As of June 2022, 1,2-DC A concentrations in limestone monitoring wells are fully delineated.
1,2-DC A impacts have been identified within the Site boundary and on properties located
southwest of the Site.
4. Is there a continuous on-site O&M presence9 If so, please describe staff responsibilities and
activities. Alternatively, please describe staff responsibilities and the frequency of site inspections
and activities if there is not a continuous on-site O&M presence.
A field technician visits the Site 2 to 3 times per week (average of 4 to 6 hrs) inspecting the system
piping, the treatment system building, and the Site perimeter and performing general security
inspections. Other field staff perform semi-annual (January and July) sampling of the monitoring
well network.
5. Have there been any significant changes in site O&M requirements, maintenance schedules or
sampling routines since start-up or in the last five years9 If so, do they affect the protective!!ess or
effectiveness of the remedy9 Please describe changes and impacts.
The treatment system was deactivated in November 2021 and has remained inactive. As discussed
above, COC concentrations in shallow and limestone monitoring wells have not increased since
system deactivation. In fact, although further monitoring is warranted, initial decreasing trends have
been observed in some wells following system deactivation (EX-04, EX-05, EX-06, EX-09R,
EX-13, LW-03, and LW-14-1 1).
Significant groundwater delineation efforts performed during the last five years have included on-
site shallow groundwater investigation activities and both on and off-Site limestone groundwater
investigation activities. These investigation efforts have increased the protectiveness of the remedy
by providing comprehensive delineation and allowing for continued monitoring of plume stability.
The Site remains vacant with no plans for redevelopment and existing land use restrictions provide
protectiveness for potential future on-site exposures.
6. Have there been unexpected O&M difficulties or costs at the Site since start-up or in the last five
years9 If so, please provide details.
E-6
-------
The treatment system was deactivated in November 2021 and has remained inactive. As such, O&M
costs for system operation have been reduced since November 2021.
As discussed above, the treatment system was deactivated because it no longer provided effective or
efficient treatment of the remaining COC impacts. System deactivation was also prompted by a
request to treat PFAS detected in the system discharge. Treatment of PFAS would require a
treatment system renovation and a new discharge permit. If required, the regulatory, logistical, and
engineering challenges associated with such a modification would qualify as an unexpected O&M
difficulty and cost.
7. Have there been opportunities to optimize O&M activities or sampling efforts9 Please describe
changes and any resulting or desired cost savings or improved efficiencies.
As discussed above, the treatment system was deactivated in November 2021 and O&M costs have
been reduced since that time. Despite deactivation, COC concentrations in shallow and limestone
monitoring wells have not increased. In fact, although further monitoring is warranted, initial
decreasing trends have been observed in some wells following system deactivation (EX-04, EX-05,
EX-06, EX-09R, EX-13, LW-03, and LW-14-11). During the same time period, completed on and
off-Site investigation efforts have provided comprehensive delineation and allow for continued
monitoring of plume stability.
8. Do you have any comments, suggestions or recommendations regarding O&M activities and
schedules at the Site9
Optimization of the monitoring program is recommended to include the identification of wells that
should be moved from a semi-annual to an annual monitoring schedule based on their locations with
respect to the COC plumes and their historic COC concentrations.
9. Do you consent to have your name included along with your responses to this questionnaire in the
FYR report9 Yes
E-7
-------
KALAMA SPECIALTY CHEMICALS SUPERFUND SITE
FIVE-YEAR REVIEW INTERVIEW FORM
Site Name: Kalama Specialty Chemicals
EPA ID: SCD094995503
Interviewer name: Sabrina Foster and Kim Chase
Interviewer affiliation: Skeo
Subject name: Resident
Subject affiliation: Resident adjacent to Site
Subject contact information: N/A
Interview date: 11/14/2023
Interview time: 3:30 P.M.
Interview location: At residence
Interview format (circle one): In Person
Phone Mail Email Other:
Interview category: Resident
1. Are you aware of the former environmental issues at the Site and the cleanup activities that have
taken place to date?
I was not aware of the Site.
2. What is your overall impression of the project, including cleanup, maintenance and reuse activities
(as appropriate)?
N/A.
3. What have been the effects of the Site on the surrounding community, if any?
N/A.
4. Have there been any problems with unusual or unexpected activities at the Site, such as emergency
response, vandalism or trespassing?
I have not noticed anything.
5. Has the EPA kept involved parties and surrounding neighbors informed of activities at the Site?
How can the EPA best provide site-related information in the future?
I was not aware of the Site. I would prefer to be emailed or texted links to site updates.
6. Do you own a private well in addition to or instead of accessing city/municipal water supplies? If so,
for what purpose(s) is your private well used?
I am on city water.
7. Do you have any comments, suggestions or recommendations regarding any aspects of the project?
I do not.
E-8
-------
APPENDIX F - SITE INSPECTION CHECKLIST
FIVE-YEAR REVIEW SITE INSPECTION CHECKLIST
I. SITE INFORMATION
Site Name: Kalama Specialty Chemicals
Date of Inspection: 11/14/2022
Location and Region: Beaufort, SC- Region 4
EPA ID: SCD094995503
Agency, Office or Company Leading the Five-Year
Review: EPA Region 4
Weather/Temperature: Fair. 60°F
Remedy Includes: (check all that apply)
~ Landfill cover/containment
~ Access controls
Institutional controls
Groundwater pump and treatment
~ Surface water collection and treatment
^ Other: excavation and off-site disposal
~ Monitored natural attenuation
~ Groundwater containment
~ Vertical barrier walls
Attachments: ^ Inspection team roster attached
Site map attached
II. INTERVIEWS (check all that apply)
1. O&M Site Manager Scott Ross and Lcslee
Alexander
Name
Interviewed ~ at site ~ at office [
Problems, suggestions Report attached: See Appendix E
Project Managers. AECOM
Title
03/31/2023
Date
| by email Phone:.
2. O&M Staff
Name Title
Interviewed ~ at site ~ at office ~ by phone Phone: _
Problems/suggestions ~ Report attached:
Date
3. 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). Fill in all that apply.
Agency SCDHEC
Contact Sara MacDonald
Name
Project
Manager
Title
1/10/2023
Date Phone
Prob le ins/suggest io ns m Report attached: Yes. See Appendix E.
Agency.
Contact
Name
Title
Date
Phone
Prob le ins/suggest io ns ~ Report attached:.
Agency
Contact
Name Title
Prob le ins/suggest io ns ~ Report attached:
Date
Phone
Agency
Contact
Name Title
Prob le ins/suggest io ns ~ Report attached:
Date
Phone
F-l
-------
Agencv
Contact
Name Title
Problems/suggestions [~~| Report attached:
Date
Phone
4.
Other Interviews (optional) ^ Report attached: Resident
III. ON-SITE DOCUMENTS AND RECORDS VERIFIED (check all that apply)
1.
O&M Documents
[3 O&M manual ~ Readily available
~ Up to date
~ N/A
13 As-built drawings Readily available
^1 Up to date
~ N/A
13 Maintenance logs ^ Readily available
^ Up to date
~ N/A
Remarks:
2.
Site-Specific Health and Safety Plan
~ Readily available
~ Up to date
Hn/a
~ Contingency plan/emergency response plan
~ Readily available
~ Up to date
0N/A
Remarks:
3.
O&M and OSHA Training Records
Remarks:
13 Readily available
13 Up to date
~ n/a
4.
Permits and Service Agreements
~ Air discharge permit
~ Readily available
~ Up to date
0N/A
13 Effluent discharge
13 Readily available
13 Up to date
~ n/a
~ Waste disposal. POTW
~ Readily available
~ Up to date
Sn/A
n Other Dcrmits:
~ Readily available
~ Up to date
0N/A
Remarks:
5.
Gas Generation Records
Remarks:
~ Readily available
~ Up to date
13 N/a
6.
Settlement Monument Records
Remarks:
~ Readily available
~ Up to date
13 N/A
7.
Groundwater Monitoring Records
Remarks:
13 Readily available
13 Up to date
~ n/a
8.
Leachate Extraction Records
~ Readily available
~ Up to date
13 N/A
Remarks:
9.
Discharge Compliance Records
~ Air ~ Readily available
~ Up to date
13 N/A
13 Water (effluent) |3 Readily available
13 Up to date
~ N/A
Remarks:
10.
Daily Access/Security Logs
~ Readily available
~ Up to date
13 N/a
F-2
-------
Remarks:
IV. O&M COSTS
1. O&M Organization
~ State in-housc ~ Contractor for state
l~l PRP in-housc ^ Contractor for PRP
~ Federal facility in-house O Contractor for Federal facility
~
2. O&M Cost Records
E3 Readily available Up to date
~ Funding nicclianisni/agrccnicnt in place ~ Unavailable
Original O&M cost estimate: Breakdown attached
Total annual cost by year for review period if available
From:
01/01/2018
To: 12/31/2018
$175,000
~ Breakdown attached
Date
Date
Total cost
From:
01/01/2019
To: 12/31/2019
$168,000
O Breakdown attached
Date
Date
Total cost
From:
01/01/2020
To: 12/31/2020
$162,000
O Breakdown attached
Date
Date
Total cost
From:
01/01/2021
To: 12/31/2021
$141,000
O Breakdown attached
Date
Date
Total cost
From:
01/01/2022
To: 12/31/2022
$88,000
O Breakdown attached
Date
Date
Total cost
3. Unanticipated or Unusually High O&M Costs during Review Period
Describe costs and reasons:
V. ACCESS AND INSTITUTIONAL CONTROLS ^ Applicable ~ N/A
A. Fencing
1. Fencing Damaged ~ Location shown on-site map [3 Gates secured ~ N/A
Remarks: Fencing is in good condition. Ponds and the water treatment building are fenced. The rest of
the Site is not fenced.
B. Other Access Restrictions
1. Signs and Other Security Measures ~ Location shown on-site map ~ N/A
Remarks: Danger and no trespassing signs at site entrances and on fencing around ponds and extraction
and treatment building. No trespassing signs along Spanish Moss trail.
C. Institutional Controls (ICs)
F-3
-------
1. Implementation and Enforcement
Site conditions imply ICs not properly implemented ~ Yes M No ~ N/A
Site conditions imply ICs not being fully enforced Q Yes m No ~ N/A
Type of monitoring (e.g., self-reporting, drive by): self-reporting
Frequency:
Responsible party/agency:
Contact
Name Title
Reporting is up to date
Reports arc verified by the lead agency
Specific requirements in deed or decision documents have been met
Violations have been reported
Other problems or suggestions: ~ Report attached
Date
Phone no.
[~l Yes
~
No
IKlN/A
l~l Yes
~
No
[x]n/a
M Yes
~
No
~ n/a
[~l Yes
No
~ n/a
2. Adequacy ~ ICs arc adequate [3 ICs arc inadequate ~ N/A
Remarks: The 1,2-DCA plume extends oil the KSCI property; more institutional controls may be needed.
D. General
1. Vandalism/Trespassing ~ Location shown on-site map No vandalism evident
Remarks:
2. Land Use Changes On-Site [3 N/A
Remarks:
3. Land Use Changes Off Site ^ N/A
Remarks:
VI. GENERAL SITE CONDITIONS
A. Roads [3 Applicable ~ N/A
1. Roads Damaged ~ Location shown on-site map Roads adequate Q N/A
Remarks:
B. Other Site Conditions
Remarks:
VII. LANDFILL COVERS ~ Applicable ^ N/A
VIII. VERTICAL BARRIER WALLS ~ Applicable (3 N/A
IX. GROUNDWATER/SURFACE WATER REMEDIES ^ Applicable ~ N/A
A. Groundwater Extraction Wells, Pumps and Pipelines ^ Applicable ~ N/A
1. Pumps, Wellhead Plumbing and Electrical
Good condition m All required wells properly operating ~ Needs maintenance ~ N/A
Remarks: The groundwater treatment system is currently offline at the EPA's request while PFAS
contamination is being assessed. However, the system is still being maintained in standby mode and
is operable.
F-4
-------
2.
Extraction System Pipelines, Valves, Valve Boxes and Other Appurtenances
^1 Good condition Q Needs maintenance
Remarks:
3.
Spare Parts and Equipment
[x] Readily available Q Good condition O Requires upgrade Q Needs to be provided
Remarks:
B. Surface Water Collection Structures, Pumps and Pipelines ~ Applicable ^ N/A
C.
Treatment System Applicable ~ N/A
1.
Treatment Train (check components that apply)
O Metals removal ~ Oil/water separation ~ Biore mediation
^1 Air stripping ~ Carbon adsorbers
n Filters:
n Additive (e.g.. chelation agent. flocculent):
n Others:
E3 Good condition ~ Needs maintenance
E3 Sampling ports properly marked and functional
E3 Sampling/maintenance log displayed and up to date
E3 Equipment properly identified
n Ouantitv of groundwater treated annuallv:
n Ouantitv of surface water treated annuallv:
Remarks: The groundwater treatment svstem is currentlv offline at the EPA's reciuest while PFAS
contamination is being assessed. However, the svstem is still being maintained in standbv mode and
is operable.
2.
Electrical Enclosures and Panels (properly rated and functional)
~ N/A E3 Good condition ~ Needs maintenance
Remarks:
3.
Tanks, Vaults, Storage Vessels
~ N/A E3 Good condition ~ Proper secondary containment ~ Needs maintenance
Remarks:
4.
Discharge Structure and Appurtenances
O N/A ^ Good condition ~ Needs maintenance
Remarks:
5.
Treatment Building)*)
O N/A ~ Good condition (esp. roof and doorw ay s) Needs repair
E3 Chemicals and equipment properly stored
Remarks: The roof has leaks, but the building is otherwise in acceptable condition.
6.
Monitoring Wells (pump and treatment remedy)
F-5
-------
Properly sccurcd/lockcd ^ Functioning ^ Routinely sampled ^ Good condition
All required wells located ~ Needs maintenance ~ n/a
Remarks:
D. Monitoring Data
1. Monitoring Data
Is routinely submitted on time Is of acceptable quality
2. Monitoring Data Suggests:
~ Groundwater plume is effectively contained ~ Contaminant concentrations arc declining
E. Monitored Natural Attenuation
1. Monitoring Wells (natural attenuation remedy)
~ Properly sccurcd/lockcd ~ Functioning O Routinely sampled O Good condition
~ All required wells located ~ Needs maintenance ^ N/A
Remarks:
X. OTHER REMEDIES
If there arc remedies applied at the site and not covered above, attach an inspection sheet describing the physical
nature and condition of any facility associated with the remedy. An example would be soil vapor extraction.
XI. OVERALL OBSERVATIONS
A. Implementation of the Remedy
Describe issues and observations relating to whether the remedy is effective and functioning as designed.
Begin with a brief statement of what the remedy is designed to accomplish (e.g., to contain contaminant
plume, minimize infiltration and gas emissions).
The remedy's objectives for soil and sediment are to prevent or mitigate the release of contaminants to
groundwater, reduce risk to human health due to contact with contaminated soils and reduce contaminant
concentrations to levels that are safe for environmental receptors. The groundwater remedy's objectives
are to prevent off-propertv migration of contaminated groundwater and prevent ingestion of groundwater
with contaminant concentrations above MCLs. The soil and sediment remedy has been successfully
implemented. However, the groundwater extraction and treatment remedy has not prevented off-propertv
migration of contaminated groundwater. Further, the system is currently offline, to prevent the spread of
PFAS. The selected remedy will be reevaluated in light ofPFAS and results of the plume delineation
^
B. Adequacy of O&M
Describe issues and observations related to the implementation and scope of O&M procedures. In
particular, discuss their relationship to the current and long-term protcctivcncss of the remedy.
O&M procedures appear to be adequate. The groundwater treatment plant, monitoring wells and
^
C. Early Indicators of Potential Remedy Problems
Describe issues and observations such as unexpected changes in the cost or scope of O&M or a high
frequency of unscheduled repairs that suggest that the protcctivcncss of the remedy may be compromised
in the future.
The plume extends off the site property. Additionally. PFAS have been detected on-site in concentrations
that exceed the EPA's lifetime health advisory level. The EPA and the PRP are investigating these
c^
D. Opportunities for Optimization
Describe possible opportunities for optimization in monitoring tasks or the operation of the remedy.
N/A
F-6
-------
APPENDIX G - SITE INSPECTION PHOTOS
O OlEMUP.!
.mental A;cW
Envirom
Site: •\ioTBt"'
EPA Coniac> P^r;
Telep'l0n . ^
Sign at entrance to Site
Kalama Specialty Chemical
• Groundwater Remediation Project
William Penn - United Techologies Corp.
Remedial Project Manager: Candice Teichert
U.S. Environmental Protection Agency
9 Remediation System Designed By:
Foster Wheeler Environmental Corporation
Remediation System Managed By:
AECOM
Groundwater treatment sign and building exterior
G-l
-------
Groundwater treatment building interior
Air strippers for the groundwater treatment system (currently turned off)
G-2
-------
Extraction well EX-08 with a monitoring well and other extraction wells in background
Monitoring wells MW-41 and MW-41A
G-3
-------
Spanish Moss Trail adjacent to the Site
Sign on the infiltration pond gate
G-4
-------
Infiltration pond
Site entrance from Glass Road
G-5
-------
Monitoring well LW-14 on a neighboring property
Mixed pine and hardwood forest on the KSCI property
G-6
-------
APPENDIX H - DATA TABLES AND FIGURES
Figure H-l: Well Map-
C5EKJQ&
CS253©
ZSaJJ&SSi)
rMwjiij
F,'-c1em
¦EXjOM
EpzI06^|
IMW321
jMWjttA
[PZ^l
EX^j
[frwge]
mwmnol
JmW-47B;
fezlail
iMW,l'4-02j
[MWr'37B]
ffhomas Concrete
Legend
Surficial Aquifer Monitoring Well Location
Bedrock Aquifer Monitoring Well Location
Piezometer Location
Extraction Well Location
Extractioi Well (Unused)
Off-site Production Well
Staff Gauge Location
Piping
Effluent 'ipeline
Ditch - Center Line
Ditch - Tap of Bank
Concrete_Surface
Property Entrance
On-Site Road
Gate
Fence
Trail
Treatment System Building
Property Lin®
Map Projection
NAD 83, South Carolina State Plane, Feet
FIPS 3900
AECOM
Site Layout Map
Kalama Specialty Chemicals Site
Beacfort, South Carolina
"] -7T— :
¦Mari ^iG.orpsJ
wHMi[Station...
6 Figure 2 of June 2022 Semi-Annual Groundwater Monitoring Report. AECOM.
H-l
-------
Figure H-2: Surficial Aquifer Potentiometric Surface Map, June 20227
Legend
iMwSY'
W'
Extraction Well (Unused)
Groundwater Elevation (ft amsl)
Surficial Polentiontetric Surface Contour (ft amsl)
Estimated Groundwater Flow Direction
Effluent Pipeline
Ditch - Cenler Line
kMW^2^
>25 621
HMpzP6.
fr/gg25lMl
BR"EX-08M
lK5j25fl|
}Ex?nWVj
t26-20]JPM
Property Entrance
«MvyJi7A7
t2'4faom'
tp&jsi
\2Sr0AJ
On-Site Road
Bfeifetationai
[P"Z?)3]
K-tf98l
fMW-47Bj
\.24'97J
[MW452I
g25T27j
[EX[04j
125*141
Treatment System Building
Property Lire
[MWj%02l
¦C2S8T
Notes:
1. ft amsl - Feet Ax»ve Mean Sea Level
2. NM - Not Measured
I^g^^SGliEaalit^
HAmw?38bH
Mt27'03l?g
Feet
1:3.600
Map Projection:
NAD 83, South Carolina State Plane. Feet
FIPS 3900
jfhomas Concrete
AECOM
10 Patewood Drive Building 6. Suite 500
Greenville. SC 29615
T: (864) 234-3000 F: (864)234-3069
Surficial Potentiometric Surface Map
Non-Pumping Conditions
June 2022
Kalama Specialty Chemicals Site
Beaufort. South Carolina
OHOJft::T S»-> I I DME | c-
60692031 I RJS I 12/23/2022 I ri9u'
Figure 3 of June 2022 Semi-Annual Groundwater Monitoring Report. AECOM.
H-2
-------
Figure H-3: Bedrock Aquifer Potentiometric Surface Map, June 20228
Legend
24.85 Groundwater Elevation (ft amsl)
Bedrock Potentiometric Surface Contour (ft amsl)
Estimated Groundwater Flow Direction
Effluent Pipeine
Ditch - Center Line
!M^ine|SorRS]
FAittStationa
¦
3"3f24?431
Treatment System Building
Notes:
1. ft amsl - Feet Above Mean Sea Level
2. NM - Not Measured
1:3.610
Map Projection;
NAD 83. South Carolina State Plane. Feet
FIPS 3900
frhomas Com
AECOM
to Patewood Drive. Building 6. Suite 500
GreenviHe.SC 29615
T: (864(234-3000 F: (864)234-3069
Bedrock Potentiometric Surface Map
June 2022
Kaiama Specialty Chemicals Site
Beaufort. South Carolina
[ PftT-OA«fr>fiv I iwff I
RJS I 12/21/2022
8 Figure 4 of June 2022 Semi-Annual Groundwater Monitoring Report. AECOM.
H-3
-------
Figure H-4: Benzene Concentrations in the Surficial Aquifer, June 2022
Legend
Surficial Aquifer Monitoring Well Location
Piezometer Location
[MWjl3]
iNsral
Extraction Well (Unused)
Infiltration! Fjondj
iMwjOAl
InsmI
Effluent Pipeline
[EX%7M
¦8T8Jn
fcNS»M
&EX-081
Kexci?
SK-.
Property Entrance
(MW-35A1
[Nsy*!S
!MWjl7ffl
iNS.T£i
iMannelg.QrF^l
FAitfStationa
it?z-:o3—
¦fNsgnl
¦MW^16Al
¦¦39/2]
|MW^47B!
IONS.
H PZ-02I
I^C^O.3'1'
MW14]02P|
Property Lre
Notes:
1. pg/L - Micrograms per Liter
2. NS - Not Sampled
l^prmefiK SjS l| F^acil ity]
[MWr38]
LiNsM
whom as Concrete
Map Projection:
NAD 83. South Carolina State Plane, Feet
FIPS 3900
AECOM
10 PalewocK) Drive. Building 6, Suit* 500
Greenville. SC 29615
T: (864) 234-3000 F; (864)234-3069
Benzene Detections
in the Surficial Aquifer
June 2022
Kalama Specialty Chemicals Site
Beaufort, South Carolina
I PBl=fe^DBr 1 — 1
RJS | 12/23/2022 |
i>ROJ^C-1 HO
60692031
9 Figure 5 of June 2022 Semi-Annual Groundwater Monitoring Report. AECOM.
H-4
-------
[MW53™Ww53Al
MNsflNSJaH
[Mwgy
¦NSM
Lex;om
bf5»jy
¦iNSli
ImwaibM
rAbandoned,
lEX'121
g"0?36l
IMWjl2l
BKjNSf
lMW-427
NS*
[EX-06J
g^36|
lExSsl
|0!5*jM
IRZQ7I
SNSM
IpzSJsJ
-Q if/
|MWSi7A1
[ns£BE
(MW516A1
¦ksj
Sbs^
MVS'!--02"
i62-7/jHfl
EX5)9R]
^253'0|
(MW-'33l
goT36la;u1
IRormej^SGIIRacji^
Concrete
Figure H-5: Ethylbenzene Concentrations in the Surficial Aquifer, June 2022
|Ma ri rie^orpsl
B»n|
m
In fi ItratiofnGofKjfc,
Legend
V Surficial Aquifer Monitoring Well Location
A Piezometer Location
# Extraction Well Location
O Extraction Well (Unused)
6g 2 June 2022 Ethylbenzene Concentration in
Groundwater (pg'L)
June 2022 Ethylbenzene Isoconcentration Contour
(MO"-)
Piping
Effluent Pipeline
Ditch - Center Line
Ditch - Top of Bank
Concrete_Surface
Property Entrance
—— On-Site Road
¦ Gate
* * Fence
- - - Trail
Treatment System Building
Property Lire
Notes:
1. pgfL- Micrograms per Liter
2. NS - Not Sampled
i
300 150 0 300
Map Projection .
NAD 83, South Carolina State Plane, Feet
FIPS 3900
AECOM
10 Palewood Drive, Building 6, Suite 500
Greenville, SC 29615
T: (864) 234-3000 F (864)234-3069
Ethylbenzene Detections
in the Surficial Aquifer
June 2022
Kalama Specialty Chemicals Site
Beaufort, South Carolina
HBBSgT VO 1 PREPAID BV 1 DOT 1 C- f
60692031 I RJS I 12 23'2022 I figure f
10 Figure 7 of June 2022 Semi-Annual Groundwater Monitoring Report, AECOM.
H-5
-------
Figure H-6: Xylene Concentrations in the Surficial Aquifer, June 202211
Legend
Surficial Aquifer Monitoring Well Location
[KM'43}
Extraction Well Location
Extraction Well (Unused)
June 2022 ~otal Xylenes Isoconcentration
Contour (pg/L)
June 2022 "olal Xylene Concentration in
Groundwater (pg/L)
Effluent Pipeline
.Mw2t2/p
|NS Tf
lEX-:06fc
£0723
Property Entrance
[MarinelGof^j
yAitfStationa
|Mwji7Al
|nsS25bB
I Af5430*J
Treatment System Building
iMW,f4tQ2l
: 1^0'JiBa
Property Lire
[PZlcTlJ
Ko72e
FmwSj!
lESufiJ
Notes:
1. pg'L - Micrograms per Liter
2. NS - Not Sampled
[^ormgi^KS^j^aglity]
HjAMg£38BM
IMW;33]
¦0>72TUJj1
|MW;37j
jaiNSJ
Feet
1:3.600
Map Projection
NAD 83, South Carolina State Plane, Feet
FIPS 3900
^Thomas Concrete
AECOM
10 Palewood Drive. Building 6, Suite 500
Greenville.SC 29615
T: (864) 234-3000 F <864)234-3069
60692031
11 Figure 8 of June 2022 Semi-Annual Groundwater Monitoring Report, AECOM.
H-6
-------
Figure H-7: 1,2-DCA Concentrations in the Surficial Aquifer, June 2022
12
12 Figure 6 of June 2022 Semi-Annual Groundwater Monitoring Report, AECOM.
H-7
-------
Figure H-8: 1,2-DCA Concentrations in the Bedrock Aquifer, June 202213
Legend
Bedrock Aqufer Monitonng Well Location
Off-site Prodjction Well
June 2022 12-DCA Concentration in
Groundwater (pg/L)
June 2022 1,2-DCA Isoconcentration Contour
(yg/L)
Effluent Pipeine
Property Entrance
IMaringigor^
BSittStatiorM
luwX-tlio]
Treatment System Building
Property Line
Notes:
1. pg(L - Micrograms per Liter
2. NS - Not Sampled
iR^^^SGjlEacjlityj
Feet
1:3.600
Map Projection:
NAD 83. South Carolina State Plane, Feet
FIPS 3900
jfhomas Concrete
AECOM
t0 Patewood Drive. Building 6, Suite 500
Greenvilte.SC 29615
T: (864) 234-3000 F (864)234-3069
1,2-DCA Detections in the Bedrock Aquifer
June 2022
Kalama Specialty Chemicals Site
Beaufort, South Carolina
I M^ARiOBV 1 1
! Sis | 12/21/2022 |
60692031
| Figure VP
13 Figure 10 of June 2022 Semi-Annual Groundwater Monitoring Report, AECOM.
H-8
-------
Figure H-9: PFOS and PFOA Detections in the Surficial Aquifer14
IriflltratiornSonfri
H|ns>
[MWjQAj
kofo021fl
[mv^bJHP
INSrAbandonedj
•JAW-42 1
^002^
JMW32A
178231
~PZ-.072
Wiix^6l
Nnsi
IEX^05wfeg
[EX£08]
[NSljf
[MW,141031
[MW5z3
INS2BB
^W47BJ
iKSKNSj
[EX%j]
MNSl
¦EX-09r|
¦3" NS
fcjfhpmas Concrete
PROJECT NO
60692031
CflSKBa .CSff
-------
Figure H-10: PFOS and PFOA Detections in the Bedrock Aquifer1516
Legend
Bedrock Aquifer Monitoring V\fell Location
ilnfiitratidn'^onal
Off-site Production Wfell
November 2020 PFOS + PFOA Concentrations in
Groundwater (pg/L)
December 2021 PFOS + PFOA Concentration in
Groundwater (pg/l_)
Yellow highlight Indicates Value Exceeds the
Lifetime Health Advisory value for PFOA + PFOS
(USEPA, November 2016)
New Effluent Pipeline
Ditch - Center Line
Property Entrance
Treatment System Building
Property Line
Marine Corps
Air Station
lormerjK SC llFaa lifi
Notes:
1. pg/L- Micrograms per Liter
2. NS - Not Sampled
Service Layer Credits (Aerial) Source Esri, Maxar, GeoEye,
Earthstar Geographies. CNE&AirbusDS, USDA, USGS,
AeroGRID, IGN, and the GIS User Community
1:3.000
Map Projection
NAD 83, South Carolina State Plane, Feet
FIPS 3900
10 Palewoott Drive, Building 6, Suile 500
GreenyillB.SC 29615
T: (664) 234-3003 F. ©64)234-3069
AECOM
Thomas Concrete,
PFOS + PFOA Deiections
In the Bedrock Aquifer
November 2020/Decernber 2021
Kalama Specialty Chemicals Site
Beaufort, South Carolina
ii",- ',v. 1——i ~ r—r—
6'»645S6 I RJS I 5/3/2022 jJJE
15 Figure 11 of December 2021 Semi-Annual Groimdwater Monitoring Report, AECOM.
16 Results are compared to 2016 lifetime health advisories. See the Data Review Section of this FYR for comparison to updated 2022 lifetime health advisories.
H-10
-------
Figure H-ll: Bedrock Potentiometric Surface Map (during pumping), June 202117
17 Figure 4 of June 2021 Semi-Annual Groundwater Monitoring Report, AECOM.
H-ll
-------
Figure H-12: Benzene Groundwater Screening Results, Surficial Aquifer
Legend
Surfcial Aculte* Delln&alton Boeing
Surfeial Awiita' Monitoring tAtal Locatcn
Pj62artT# let LutiiSori
Extract*- n Well Location
Extractor) Wnll |Umis«b|
Piping
Etluert! Dipc«ne
Dftsli - Center Line
'Irtilfratop.fioncli
Dccfi - Top cf Ban*.
OptxreaeSuifnce
Properly Entrance
On-ste ^eri
IMWgTBM
rAlq"JuTSj|
[SaSjI
¦w:35A?
|mw^51
?Sf%5jlW
IMivSEi
•WWl
Tnsalrne-il Systeer QuAdng
>-»CAS B®at*ort Properly Line
Proparty Lin*
FD- flebl Oupttcale
fvi - Ncl Instated
^ The <«nwmr8lion i» folnwwJ by it* **trpls depth n
ptNlWlMM.
2- Saitoal aquifer baring SA-1 was op-tceateO with Ikneaftys
aqute' burng LS-1
•mi,
mm
t:3.«10
Map Projection;
MAO 83 SMi*C*rdir* suu* Plane. f+«t
FlPS 39C0
AECOM
10 njlewoos Otlve,
-------
fit? ass®
Figure H-13: 1,2-DCA Groundwater Screening Results, Surficial Aquifer
Legend
SiKficial Aquifer Dalmatian Boring
SuTficiiil Aquifer ManitoHrg W«SI iocaton
Ptezometef Location
Extraction VVmH lUrusml[
Slall ftauga I c»_alcri
intiltfa;pn:Rotxli
wAfenduiw-ll
Otcti - Top of Bart*
Co«> the sample depth r>
paittnlheses.
Z. Surficial aqufer t wng 5A-1 wasCO-tocahfrd tMth Kreslor*
aqiirter honnijt s-l
HiQTmeftKSgl]
AECOM
10 PatewoMarin'e^Sorp"s^
^Piwpafonfjl
Surficial Aquifer
Groundwater Screening Results - 1.2-DCA
Kalsj-in S
-------
Figure H-14: 1,2-DCA Groundwater Screening Results, Bedrock Aquifer
lEHine^orDSl
fs&TM DCG!.Tsaji?&y?TrD?Sr
1. TheconceiHralc»fBs**!BtoIow«l bylhe samjKedeaii r>
pmitHB
2. k-mestons aQjic tanng LS»1 mm co "sa »d wti sjtIkm
aqj(e' oomg SA 1.
[Ttamas Concrete
1:3,600
M ap Prqo-ito-i
NAD S3, 3aun Cirora Sla» Pkmc, "eel
FPS380Q
CW-3
„ e -
sQ 25(93"&f-D)w
«025{10a ) ™
AECOM
•0 P^wrxtS Drin BdfSrg S, Su>» KC
Gr*«v*l* X 39»S
T: 4®44j 23-< -3CCC f M69
Marine^oip
SKiffeialion^
^ 5§1&
"^0-25 nOff) '
Limestone Aquifer
Groundwater Screening Results - 1,2-DCA
Kalama SDeceally cn«T»cals ate
Beaitoit. Sou® Cardra
i—vmmtuvr. \ snt
| Figure?
««««»
.iUSflSHL
20 Figure 6 of 2021/2022 Groundwater Delineation Technical Memorandum. AECOM
H-14
-------
Figure H-15: Geologic Cross-Section A-A' with 1,2-DCA Groundwater Screening Results21
A (Southwest) w A'(Northeast)
Horizontal DfStance (ft) horizontal Scale 1 ind* ¦ 20D reel
vertical Exaggeration = 20X
Cross Section Location Map
Legend
¦ i
¦ -1 1
\ >
mmmm
k
iPfcS
UMk
¦ •«»!,
4 JvlMlAMh' Imtlei
1 htnict l^itirlcnnnctKiwis
1
<0.31
220
Morwtonng Well Screen
Surfteial Aquifer Groundwater Level - June 2Q22
Bedrock Aquifer Groundwater Level - June 2022
1,2-OCA Concentration {M9'L) from Monitoring
Wefl - Below the MCL - June 2022
1,2-DCA Coocentrafoon (pg.'L) from Grou ndwater
Screening Location - Be^ow the MCL - 2021/2022
1,2-DCA Concentration (ppl) from Monitoring
Well - Above the MCL • June 2022
1.2-DCACunuerilratiuii (pLf/l) fium GiuursdwaiyF
Screening Location ¦ Above ihe MCL • 2021/2022
Approximate Location of 1,2-DCA Concentrations
Above ^ lfu?l
MCL - maximum con'^nirtant level
1 The MCL far 1 2-QCA is 5 pg*.
A3COM
ilPawccaltTA !•«*)(
5C»5(-
IM4S*3Ri *
C rnas Suction A-A'
21 Figure 13 of 2021/2022 Groundwater Delineation Technical Memorandum. AECOM
H-15
-------
Figure H-16: Geologic Cross-Section B-B' with 1,2-DC A Groundwater Screening Results22
B (North) B' (South)
Horizontal Distance {ft)
Horizontef Scale. 1 mat « 2D0 reel
VWiliudl EndUUf dlun - 2CX
Leq&nd
<0.31
<0.31
49.8
220
~
Morotonng Well Screen
Surf»cial Aquifer Groundwater Level - June 2022
Bedrock Aquifer Groundwater Level - June 2022
1,2-DCA Concentration {^g/L) from K4onitoring
Well - Below the MCL - June 2022
1,2-DCA Concentration fpg/L) from Groundwater
Screening Location - Bekw the MCL - 2021/2022
1,2-DCA Concentration (yj'L) from Monitoring
Well - Above the MCL ¦ June 2022
1,2 DCA Concentration (ngrt.) from Groundwater
Screening Location - Above the MCL ¦ 2021/2022
Approximate Location of 1,2-DCA Concentrations
Abova the mcl
Silty Sand (Fine - Very Fine) and/or Fine - Very Fine
Sand with Silt/Clay
Fine - Very Fine Sand, Poorfy Sorted
Well Graded Sand (Fine - Coarse) with
ShcKs/F1 033'l3
Sandy/Gravelty Limestone and/or Sand.'Gravel with
Shells and Limestone Fragements
Sandy/Gravelly Limestone Without Shells/Fossils
Clay/ Silty Clay or Fine Sand With Clay Lenses
Clay/Silty Cfay. Calcareous
Notes.
1.2-OCA -1,2-OchJcfn ethane
- micrograms pet liter
jwrnsl - jtfinufi rrwfln smsp 5sv«I
MCL - maximum conlaminan-1 level
i. The MCL lor 1,2-DCA is 5 pg/L.
_ . _ i! PWKddOM l.("i f 5H.KC
A — [DM Sw** KWIt
Grow Section B-O'
Cross Section Location Map
22 Figure 14 of 2021/2022 Groundwater Delineation Technical Memorandum. AECOM
H-16
-------
Figure H-17: Geologic Cross-Section C-C' with 1,2-DCA Groundwater Screening Results23
C (North) "' " " C' (South)
Horizontal Scale: 1 inch = 200 feet
Vertical Exaggerates = 20X
H ii i j ; i i i i ii i i | i i . i i t . i i | i ii » i ii i i | i - i i i i i i . | ii i i i i - i i | ii i imiii|i-iiiiiii | i
EDO 1,003 1.3QO (.400- 1,600 I.HCC 2KB 3.300
I lorizontal Distance (ft)
Cross Section Location Map
Legend
<0.31
220
Monrtonng Well Screen
Surteial Aquifer Groundwater Level - June 2022
Bedrock Aquifer Groundwater Level - June 2022
t ,2-OCA Concentrator* (|jg/L) from Monitoring
Well - Below the MCL - June 2022
1,2-OCA Concentration (pg/L) from Groundwater
Screening Location - Below the MCL - 2021/2022
1,2-DCA Concentration (u^'L) from Momtoring
Well - Above the MCL - June 2022
1.2-DCA Concentration <|jg^L) from Grourdwatef
Screening Location - Above ihe MCL - 2021/2022
Approximate Location of 1.2-DCA Concentrations
Ab6ve m mcl
S*lty Sand (Fine - Very Fine) and/or Fine - Very Fine
Sand with Siit'Ciay
Fine - Very Fme Sand, Poorly Sorted
Well Graded Sand (Fine - Coarse) with
Sticlla/F 033*ia
Sandy'Gravelty Limestone and/or Sand'Gravel with
Shells and Limestone Fragements
Sandy/Gravelty Limestone Without Shells.'Fossils
Clay/ Bitty Clay or Fine Sand With Clay Lenses
Ciay/Sitty Clay. Calcareous
1 2-DCA -1,2-Oichioroelhafie
Mg/L - micrograms jser liter
amsl - ahnup nrvwin ana fc»vwl
MCL - maximum conlaminanl level
1. The MCI. lor 1.2-DCA ta 5 pg.'L.
AECOM
Grow section G*C'
23 Figure 15 of 2021/2022 Groundwater Delineation Technical Memorandum. AECOM
H-17
-------
Table H-l: Historical Analytical Groundwater Data24
VOCs by EPA M
ethod 8260 (pg/L)
Well ID
Date
1
1
i
I
II
|
I
o
g
j
1,2-
Dichloroethane
I
I
II
CN
-------
VOCs by EPA Method 8260 (jjg/L)
Well ID
Date
cu
1
<
<
1
1
§ ST
m lu
Carbon Disulfide
1
I
o
O
O
Chloroethane
Chloroform
cis-1,2-
Dichloroethene
1,2-
Dichioroethane
2-Hexanone
1
c
Methylene
chloride
4-Methyl-2-
pentanone
1
=
¦/inyi chloride
Xylenes
Standard'-1'2,3-5:
1400
13
0,0042
5
560
81
100
2100
80
70
5
3,8
700
5
630
1,000
2
3,500
Oct-00
<20
<50
<50
91
<10
<5.0
<5.0
<5.0
<5.0
<5.0
670
<5.0
6,3
<5.0
<5.0
50.0
<2.0
12.0
Oct-01
20
<50
<50
56
<10
<5.0
<5.0
<5.0
<5.0
<5.0
350
<5.0
<5.0
<5.0
<5.0
25
<2.0
14
Oct-02
<20
<50
<50
37
<10
<5.0
<5.0
<5.0
<5.0
<5.0
300
<5.0
<5.0
<5.0
<5.0
22.0
<2.0
<5.0
Feb-03
26
<50
<50
28
<10
<5.0
<5.0
<5.0
<5.0
<5.0
180
<5,0
<5.0
<5.0
<5.0
12.0
<2.0
<5.0
Jun-03
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Oct-03
48
<50
<50
30
<10
<5.0
<5.0
<5.0
<5.0
<5.0
190
<5.0
<5.0
<5.0
<5.0
7 6
<2.0
<5.0
Feb-04
8?
<50
<50
88
<10
<5.0
<5.0
<5.0
<5.0
<5.0
140
<5.0
<5.0
<5.0
<5.0
17
<2.0
9.4
Jun-04
<20
<50
<50
24
<10
<5.0
<5.0
<5.0
<5.0
<5.0
130
<5.0
<5.0
<5.0
<5.0
8.2
<2.0
120.0
Oct-04
25
<50
<50
22
<10
<5.0
<5.0
<5.0
<5.0
<5.0
140
<5.0
<5.0
<5.0
<5.0
8.0
<2.0
<5.0
Feb-05
<20
<50
<50
64
<10
<5.0
<5.0
<5.0
<5.0
<5.0
130
<5.0
<5.0
<5.0
<5.0
8.1
<2.0
<5.0
Jun-05
45
<50
<50
28
<10
<5.0
<5.0
<5.0
<5.0
<5.0
140
<5.0
<5.0
<5.0
<5.0
5.4
<2.0
<5.0
Oct-05
<20
<50
<50
31
<10
<5.0
<5.0
<5.0
<5.0
<5.0
150
<5.0
<5.0
<5.0
<5.0
6.2
<2.0
5.6
Feb-OB
40
<50
<50
36
<10
<5.0
<5.0
<5.0
<5.0
<5.0
220
<5 0
<5.0
<5.0
<5.0
8.7
<2.0
9.9
Jul-08
45
<50
<50
34
<10
<5.0
<5.0
<5.0
<5.0
<5.0
130
<5.0
<5.0
<5.0
<5.0
5.9
<2.0
5.1
Nov-08
37
<50
<50
30
<10
<5.0
<5.0
<5.0
<5.0
<5.0
230
<10
<5.0
<5.0
<10
8.2
<2.0
11
May-07
46
<50
<50
33
<10
<5.0
<5.0
<5.0
<5.0
<5.0
190
<10
<5.0
<5.0
<10
7.4
<2.0
9.7
Nov-07
49
<50
<50
35
<10
<5.0
<5.0
<5.0
<5.0
<5.0
180
<10
<5.0
<5.0
<10
8.0
<2.0
7.0
May-08
48
<50
<50
45
<10
<5.0
<5.0
<5.0
<5.0
<5.0
160
<10
<5.0
<5.0
<10
8.5
<2.0
7.2
Nov-08
170
<50
<50
120
16
<5.0
<5.0
<5.0
<5.0
<5.0
100
<10
<5.0
<5.0
<10
18
<2.0
10
M ay-09
25
<100
<100
40
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
95
<5.0
2.2
<2.0
<5.0
7
<2.0
5.4
Dec-09
<10
<100
<100
25
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
73
<5.0
2.5
<2.0
<5.0
10
<2.0
6.0
Jun-10
<20
NA
NA
35
<10
<5.0
<5.0
<5.0
<5.0
<5.0
100
<10
<5,0
<5.0
<10
5.3
<2.0
6.0
Dec-10
<20
<50
<50
38
<10
<5.0
<5.0
<5.0
<5.0
<5.0
120
<10
<5.0
<5.0
<10
8.6
<2.0
9.3
Jun-11
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA.
NA
NA
NA
NA
NA
NA.
NA
EX-05
Dec-11
<50.0
NA
NA
33.3
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
59.4
<10.0
2.41
<5.00
<10.0
18.8
<1.00
6.03
May-12
<50.0
NA
NA
27.2
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
57.0
<10.0
2.89
<5.00
<10.0
20.3
<1.00
7.14
Dec-12
<50.0
NA
NA.
25.9
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
75.5
<10.0
3.17
<5.00
<10.0
15.7
<1.00
8.43
Jun-13
18.2 J
NA
NA
27.7
<50.0
0.324 J
0.898 J
<1.00
<1.00
<1.00
66.9
<10.0
2.57
<5.00
<10.0
15.2
<1.00
6.76
Dec-13
<11 UJ
NA
NA
27.8 J
<1.5 UJ
<0.2 UJ
0.73 J
<0.5 UJ
<0.31 UJ
<0.33 UJ
80.9 J
<2 UJ
2 J
<2 UJ
<1 UJ
14.3 J
<0.33 UJ
5.4 J
Jun-14
<11
NA
NA
19.2
<1.5
0.86 J
1
1.3 J
<0.31
<0.33
82.6
<2
1.7
<2
<1
18.8
<0.33
5.9
Dec-14
<21
NA
NA
27.9
<3
<0.4
1.2 J
<1
<0.62
<0.85
41.4
<4
1.4 J
<1.1
<2
18.1
<0.65
5.1 J
Jun-15
23 J
NA
NA
43.1
<1.2
3.4
1.2
<0.5
<0.3
<0.22
57.9
<2
1.S
<2
<1
17.2
<0.25
8.1
Sep-15
24.S J
NA
NA
36.1
1.4 J
<0.29
1 J
<0.5
<0.3
<0.22
55.6
<2
1.8
<2
<1
19.1
<0.25
e
Dec-15
<10
NA
NA.
4
<1.2
<0.29
<0.2
<0.5
<0.3
<0.22
115
<2
0.4 J
<2
<1
2.6
<0.25
0.82 J
Dec-15
<10
NA
NA
8.5
<1.2
0.37 J
0.38 J
3.2
<0.3
<0.22
107
<2
0.71 J
<2
<1
7.7
<0.25
2.2 J
Jun-16
61.g
NA
NA
99.8
<2.6
<0.23
<0.2
1.9 J
<0.3
<0.31
32.3
<2
2.8
<2
<1.4
15
<0.31
11.2
Dec-18
<10 UJ
NA
NA
37.8 J
<2.6 UJ
<0.23 UJ
<0.2 UJ
<0.63 UJ
<0.3 UJ
<0.31 UJ
56.4 J
<2 UJ
6.5 J
<2 UJ
<1.4 UJ
9.3 J
<0.31 UJ
15.1 J
Jun-1 ?
12.5 J
NA
NA
25.4
2.2 J
<0.53
0.47 J
<0.67
<0.3
<0.28
63.1
<2
2
10.2
<1
8.5
<0.41
9.1
Dec-17
<10
NA
NA
17.9
<2
<0.53
<0.2
<0.67
<0.3
<0.28
83.5
<2
2.8
12.1
<1
7,6
<0.41
10.2
Jun-18
15.7 J
NA
NA
32.9
<2
<0.53
0.98 J
<0.07
<0.3
<0.28
61.2
<2
1.7
2,4 J
10.5
<0.41
9.6
Dec-18
14 J
NA
NA.
32
<2
<0.53
0.85 J
<0.67
<0.3
<0.28
47.5
<2
1.2
<2
<1
8.6
<0.41
S.7
Jun-19
16.2 J
NA
NA
31.6
<2
<0 53
<0.2
<0.87
<0.3
<0.28
43.3
<2
1.5
<2
<1
8.7
<0.41
11.6
Dec-19
11.5 J
NA
NA
20.8
<2
<0.53
<0.2
<0.67
<0.3
<0.28
126
<2
2
4.1 J
<1
7
<0.41
8.2
Jun-20
14.8 J
NA
NA
26.3
<2
<0.53
<0.2
<0.67
<0.3
<0.28
71.4
<2
1.8
2.2 J
<1
7.6
<0.41
e.i
Dec-20
14.8 J
NA.
NA.
36.5
<2
<0.53
0.65 J
<0.67
<0.3
<0.28
57.2
<2
1.6
2.3 J
<1
8.7
<0.41
8.2
Jun-21
<10
NA
NA
20.5
<2
<0.53
<0.2
3.2
<0.3
<0.28
82.1
<2
3.8
<2
<1
7.5
<0.41
10.8
Dec-21
<10
NA
NA
11.7
<2
<0.53
0.48 J
<0.67 UJ
<0.3
<0.28
57.4
<2
1.9
<2
<1
8.3
<0.41
6.2
Jun-22
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
16.4
<2
0.5 J
<2 UJ
<1
<0.3
<0.41
2.3 J
H-19
-------
VOCs by EPA Method 8260 (pg/L)
Well ID
Date
Acetone
01
u
Acrolein
Benzene
2-Butanone
(MEK)
Carbon Disulfide
Chlorobenzene
Chloroethane
Chloroform
cis-1,2-
Dichioroethene
1,2-
Dichloroethane
2-Hexanone
Ethylbenzene
Methylene
chloride
4-M ethyl-2-
pentanone
Toluene
vinyl chloride
1
>.
*
Standard5-1'''0''1;
1400
13
0,0042
5
580
81
100
2100
80
70
5
3,8
700
5
630
1,000
2
3,500
Oct-QO
52
<50
<50
95
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
480
<5.0
12
<5.0
<5.0
44
<2.0
28
Oct-01
73
<50
<50
67
<10
<5.0
<5.0
<5.0
<5.0
<5.0
250
<5.0
10
<5.0
<5.0
25
<2.0
28
Qct-02
ee
<50
<50
52
<10
<5.0
<5.0
<5.0
6.7
<5.0
270
<5.0
5.4
6.8
<5.0
12
<2.0
13
Feb-03
54
<50
<50
48
<10
<5.0
<5.0
<5.0
14
<5.0
300
<5.0
6.1
12
<5.0
14.0
<2.0
19.0
Jun-03
140
<50
<50
4?
31
<5.0
<5.0
<5.0
22
<5.0
170
<5.0
9.7
10
<5.0
12
<2.0
23
Oct-03
90
<50
<50
48
<10
<5.0
<5.0
<5.0
<5.0
<5.0
310
<5.0
18
<5.0
<5.0
14
<2.0
37
Feb-04
290
<50
<50
140
13
<5,0
<5.0
<5.0
22
<5.0
260
<5.0
74.0
78
<5.0
48.0
2.1
200
Jun-04
21
<50
<50
47
<10
<5.0
<5.0
<5.0
<5.0
<5.0
190
<5.0
9.7
10
<5.0
10
<2.0
30
Oet-04
37
<50
<50
44
<10
<5.0
<5.0
<5.0
<5.0
<5.0
270
<5.0
10
7,0
<5.0
33
<2.0
34
Feb-05
240
<50
<50
160
18
<5.0
<5.0
<5.0
<5.0
<5.0
450
<5.0
49.0
23
<5.0
34.0
<2.0
140
Jun-05
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<5.0
NA
NA
<5.0
NA
<2.0
NA
Oct-O 5
NA
NA
NA
NA
NA
NA
NA
NA
NA
MA
NA
<5.0
NA
NA
<5.0
NA
<2.0
NA
Feb-06
26
<50
<50
53
<10
<5.0
<5.0
<5.0
<5.0
<5.0
180
<5.0
14.0
<5.0
<5.0
12.0
<2.0
45
Jul-08
<40
<100
<100
<10
<20
<10
<10
<10
<10
<5.0
430
<5.0
<10
<10
<5.0
<10
<2.0
16
Nov-06
<40
<100
<100
23
<20
<10
<10
<10
<10
<5.0
410
<20
34
<10
<20
14
<4.0
89
May-07
<20
<50
<50
10
<10
<5.0
<5.0
<5.0
<5.0
<5.0
290
<10
<5.0
<5.0
<10
<5.0
<2.0
18
Nov-Q7
<20
<50
<50
44
<10
<5.0
<5.0
<5.0
<5.0
<5.0
180
<10
8.5
<5.0
<10
9.2
<2.0
28
May-08
<20
<50
<50
§2
<10
<5.0
<5.0
<5.0
<5.0
<5.0
150
<10
9.5
<5.0
<10
9.5
<2.0
26
Nov-OS
<20
<50
<50
4a
<10
<5.0
<5.0
<5.0
<5.0
<5.0
41
<10
8.4
<5.0
<10
9.Q
<2.0
22
May-03
14
<100
<100
50
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
130
<5.0
9.8
<2.0
<5.0
9.7
<2.0
28.3
Dec-03
11
<100
<100
39
<5.0
<5.0
<1.0
<5.0
<1 ,Q
<1.0
100
<5.0
8.1
<2.0
<5.0
7.0
<2.0
20.1
Jun-10
<20
NA
NA
40
<10
<5.0
<5.0
<5.0
<5.0
<5.0
120
<10
9.2
<5.0
<10
6.4
<2.0
12.0
Dec-10
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
EX-06
Jun-11
<20
NA
NA
39
<10
<5.0
<5.0
<5.0
<5.0
<5.0
93
<10
8.5
<5.0
<10
9.3
<2.0
21.0
Dec-11
<50.0
NA
NA
33.8
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
69.8
<10.0
8.49
<5.00
<10.0
9.70
<1.00
18.2
M ay-12
<50.0
NA
NA
31.4
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
75.9
<10.0
8.SB
<5.00
<10.0
10.10
<1.00
20.8
Jul-13
<50.0
NA
NA
29.2
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
67,1
<10.0
7.26
5.52 6
<10.0
11.70
<1.00
20.0
Jun-14
<11
NA
NA
25.2
<1,5
0.32 J
0.64 J
<0.5
<0.31
<0.33
79.3
<2
5.8
2.3 J
<1
10.2
<0.33
16.5
Dec-14
<11
NA
NA
24.4
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
72.2
<2
5.7
<0.53
<1
9.0
<0.33
21.2
Jun-15
<10
NA
NA
25.2
<1.2
2.9
<0.2
<0.5
<0.3
<0.22
70.4
<2
5
10.8
<1
7.5
<0.25
16.1
Sep-1 5
14 J
NA
NA
21.9
1.2 J
0.5 J
<0.2 UJ
<0.5
<0.3
<0.22
57.1
<2
3.9
7.5
<1
B.4
<0.25
12.8
Dec-15
<10
NA
NA
16.6
<1.2
<0.29
0.53 J
<0.5
<0.3
<0.22
44
<2
3.6
<5.2 U
<1
7.7
<0.25
16
Dec-1 5
10.3 J
NA
NA
31.9
<1.2
0.29 J
0.7 J
<0.5
<0.3
<0.22
39.6
<2
6.5
4.2 J
10.9
<0.25
25.6
Jun-16
<10
NA
NA
16.4
<2.8
<0.23
0.58 J
<0.63
<0.3
<0.31
41.3
<2
4.4
<2
<1.4
9.7
<0.31
21.3
Dec-1 6
<10 UJ
NA
NA
52.7 J
3.1 J
<0.23 UJ
0.77 J
<0.B3 UJ
<0.3 UJ
<0.31 UJ
27,8 J
<2 UJ
2.9 J
<2 UJ
<1.4 UJ
21.8J
<0.31 UJ
12.7 J
Jun-1 7
<10
NA
NA
21.5
<2
<0.53
0.41 J
<0.67
<0.3
<0.28
34.1
<2
10.5
<2
<1
12.3
<0.41
27.8
Dec-1 7
<10
NA
NA
7.8
<2
<0.53
0.48 J
<0.67
<0.3
<0.28
34.2
<2
2.5
<2
<1
4.6
<0.41
14.4
Jun-18
<10
NA
NA
9.8
<2
<0.53
0.63 J
<0.67 UJ
<0.3
<0.28
69.1
<2
3.6
5.6
<1
7.9
<0.41
18
Dec-1 B
<10
NA
NA
9.5
<2
<0.53
<0.2
<0.67
<0.3
<0.28
52.6
<2
2.4
4.1 J
<1
5.9
<0.41
12.0
Jun-19
<10
NA
NA
8.2
<2
<0.53
<0.2
<0.67
<0.3
<0.28
32.1
<2
3
<2
<1
6.5
<0.41
17.2
Dec-1 9
<10
NA
NA
7,1
<2
<0.53
<0.2
<0.67
<0.3
<0.28
42.8
<2
3.3
2.4 J
<1
7.6
<0.41
53.6
Juri-20
<10
NA
NA
4.5
<2
<0.53
<0.2
<0.67
<0.3
<0.28
41
<2
4.5
<2
<1
5.8
<0.41
47.2
Dec-20
<10
NA
NA
4.6
<2
<0.53
0.62 J
<0.67
<0.3
<0.28
47
<2
2.4
<2
<1
6.2
<0.41
31.3
Jun-21
<10
NA
NA
6.4
<2
<0.53
<0.2
<0.67
<0.3
<0.28
70.3
<2
1.9
2.7 J
<1
3.6
<0.41
10
Dec-21
<10
NA
NA
3.2
*2
<0.53
<0.2
<0.67 UJ
<0.3
<0.28
6
<2
0.54 J
<2
<1
0.57 J
<0.41
2.3 J
Jun-22
<10
NA
NA
1.7
<2
<0.53
<0.2
<0.67
<0.3
<0.28
2.7
<2
<0.36
<2 UJ
<1
<2.3 U
<0.41
<0.72
H-20
-------
VOCs by EPA Method 8260 (}jg/L)
Weil ID
Date
c
o
h
1
Acrolein
Benzene
1,
Carbon Disulfide
Chlorobenzene
Chioroethane
Chforoforrn
ris-1,2-
Dichloroethene
" b
1
OI
3
Ethylbenzene
Methylene
chloride
-2. ^
£ c
a) J3
Toluene
0
€
1
>
1
S
andard(1i2,3J;
1400
13
0,0042
5
560
81
100
2100
80
70
5
3,8
700
5
630
1,000
2
3,500
Oct-00
91
<50
<50
180
<10
<5,0
<5.0
<5.0
<5.0
<5.0
1,000
<5,0
23
18
<5.0
89
<2.0
46
Oct-01
7B
<50
<50
74
<10
<5.0
<5.0
<5.0
<5.0
<5.0
210
<5.0
17.0
6.9
<5.0
40
<2,0
43
Oct-02
140
<50
<50
49
<10
<5.0
<5.0
<5.0
<5.0
<5.0
570
<5.0
10.0
8.6
<5.0
19
<2.0
20
Feb-03
84
<50
<50
43
<10
<5.0
<5.0
<5.0
<5.0
<5.0
560
<5.0
12
18
<5,0
20
<2.0
29
Jun-03
41
<50
<50
41
<10
<5.0
<5.0
<5.0
<5.0
<5.0
500
<5.0
15
25
<5.0
19
<2.0
36
Oct-03
37
<50
<50
36
<10
<5.0
<5.0
<5.0
<5.0
<5.0
400
<5.0
12
13
<5.0
13
<2.0
32
Feb-04
<20
<50
<50
34
<10
<5.0
<5.0
<5.0
<5.0
<5.0
350
<5.0
13
<5.0
<5.0
12
<2.0
39
Jun-04
<20
<50
<50
31
<10
<5.0
<5.0
<5.0
<5.0
<5.0
240
<5.0
11
7.9
<5.0
12
<2.0
31
Oct-04
30
<50
<50
31
<10
<5.0
<5.0
<5.0
<5.0
<5.0
420
<5.0
14
13
<5.0
14
<2.0
40
Feb-05
280
<50
<50
120
<10
<5.0
<5.0
<5.0
<5.0
<5.0
1,700
<5.0
70
75
<5.0
<5.0
<2.0
220
Jun-05
35
<50
<50
28
<10
<5.0
<5.0
<5.0
<5.0
<5.0
370
<5.0
14.0
18
<5,0
15
<2.0
40
Oct-05
<20
<50
<50
24
<10
<5.0
<5.0
11.0
<5.0
<5.0
310
<5.0
9.3
<5.0
<5.0
10
<2.0
28
Feb-08
22
<50
<50
28
<10
<5.0
<5.0
<5.0
<5.0
<5.0
320
<5.0
16.0
11
<5.0
12
<2.0
52
Jul-06
220
<50
<50
50
<10
<5.0
<5.0
<5.0
<5.0
<5.0
250
<5.0
110.0
<10
<5.0
27
<2,0
370
Nov-OB
320
<100
<100
28
2,500
<10
<10
<10
<10
<5.0
240
<20
30
<10
<20
14
<4.0
100
May-07
<20
<50
<50
23
<10
<5.0
<5.0
<5.0
<5.0
<5.0
250
<10
8.9
8.1
<10
10
<2.0
29
Ngv-07
<20
<50
<50
24
<10
<5.0
<5.0
<5,0
<5.0
<5.0
240
<10
7.1
7,0
<10
9.3
<2.0
23
M ay-08
<20
<50
<50
28
<10
<5.0
<5.0
<5.0
<5.0
<5.0
200
<10
11
6.5
<10
11
<2.0
33
Nov-08
<20
<50
<50
27
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
11
9.6
<10
12
<2.0
32
M ay-09
<10
<100
<100
23
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
160
<5.0
12
6.6
<5.0
13
<2.0
31.6
Dec-09
<10
<100
<100
14
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
120
<5.0
11
3.5
<5.0
10
<2.0
25.7
Jun-10
<20
NA
NA
14
<10
<5.0
<5.0
<5.0
<5.0
<5.0
86
<10
11
<5.0
<10
9.1
<2.0
22
Dec-10
<20
<50
<50
14
<10
<5.0
<5.0
<5.0
<5.0
<5.0
110
<10
9.8
<5.0
<10
9.2
<2.0
19
Jun-11
<20
NA
NA
11
<10
<5.0
<5.0
<5.0
<5.0
<5.0
90
<10
9.8
<5.0
<10
12
<2.0
23
EX-07
Dec-11
<50.0
NA
NA
10.9
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
68.8
<10.0
0.05
<5.00
<10.0
12.4
<1.00
16.1
May-12
<50.0
NA
NA
10.8
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
78.3
<10.0
10.2
<5.00
<10.0
14.1
<1.00
21.8
Dec-12
<50.0
NA
NA
9.60
<50.0
<1.00
<1.00
<1 00
<1.00
<1.00
72.2
<10.0
6.92
<5.00
<10.0
13.8
<1.00
17.1
Jun-13
<50.0
NA
NA
9.53
<50.0
0.378 J
0.875 J
<1.00
<1.00
<1.00
71.2
<10.0
5.59
0.829 J
<10.0
14.5
<1.00
12.8
Dec-13
<11 UJ
NA.
NA
8.8 J
<1.5 UJ
<0.2 UJ
0.93 J
<0.5 UJ
<0.31 UJ
<0.33 UJ
71.2 J
<2 UJ
3.7 J
<2 UJ
<1 UJ
15.9 J
<0.33 UJ
7.8 J
Jun-14
<11
NA
NA
8.6
<1.5
0.33 J
1.1
<0.5
<0.31
<0.33
79.1
<2
4.5
<2
<1
16.2
<0.33
10.8
Dec-14
<11
NA
NA
8.8
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
56.8
<2
4.5
<0.53
<1
19.8
<0.33
15.9
Jun-15
<10
NA
NA
9.2
<1.2
4.2
1
<0.5
<0.3
<0.22
55
<2
2.7
<2
<1
17.4
<0.25
12.4
Sep-15
<10
NA
NA
7
<1.2
72.1
1 J
<0.5
<0.3
<0.22
49.1
<2
2.4
<2
<1
18.3
<0.25
9.2
Dec-15
<10
NA
NA
6.1
<1.2
<0.37 U
0.63 J
<0.5
<0.3
0.22 J
46.6
<2
41.3
<2
<1
16.3
<0.25
119
Dec-15
12 J
NA
NA
6.5
12.5
<0.29
0.47 J
2.5
<0.3
<0.22
21.1
<2
1.7
<2
<1
23.3
<0.25
7.1
Jun-10
<10
NA
NA
13.7
<2.6
<0.23
<0.2
<0 63
<0.3
<0.31
62.7
<2
11.3
<2
<1.4
21.6
<0.31
46.8
Dec-16
<10 UJ
NA
NA
4.4 J
<2.8 UJ
<0.23 UJ
<0.2 UJ
1.3 J
<0.3 UJ
<0.31 UJ
47.4 J
<2 UJ
5.2 J
<2 UJ
<1.4 UJ
2.9 J
<0.31 UJ
12.7 J
Jun-17
<10
NA
NA
1.8
<2
<0.53
0.25 J
<0.67
<0.3
<0.28
96
<2
0.67 J
<2
<1
1.4
<0.41
1.6 J
Dec-17
<10
NA
NA
4.2
<2
<0.53
0.77 J
<0.67
<0.3
<0.28
40.2
<2
1.1
<2
<1
8.9
<0.41
8.8
Jun-1 e
<10
NA
NA
8.7
<2
<0.53
0.99 J
<0.67 UJ
<0.3
<0.28
65.5
<2
2B
<2
<1
16,9
<0.41
95.7
Dec-18
<10
NA
NA
5.2
<2
<0.53
<0.2
<0.67
<0.3
<0.28
41.8
<2
3.5
<2
<1
10,5
<0.41
40.3
Jun-19
<10
NA
NA
3
<2
<0.53
<0.2
<0.67
<0.3
<0.28
29.3
<2
2
<2
<1
4
<0.41
41.8
Dec-19
<10
NA
NA
5.9
<2
<0.53
<0.2
<0.67
<0.3
0.57 J
70.5
<2
26.9
<2
<1
11
<0.41
200
Jun-20
<10
NA
NA
4.8
<2
<0.53
<0.2
<0.67
<0.3
0.56 J
50,7
<2
31,5
<2
<1
10.7
<0.41
225
Dec-20
<10
NA
NA.
5
<2
<0.53
0.99 J
<0.67
<0.3
0.77 J
53.9
<2
22.4
<2
<1
12.2
<0.41
334 J
Jun-21
<25
NA
NA
1.8 J
<5
<1.3
<0.5
<1.7
<0.75
<0.63
27.6
<5
1.4 J
<5
<2,5
2.9
<1
32.9
Dec-21
<10 UJ
NA
NA
5.6 J
<2 UJ
<0.53 UJ
<0.2 UJ
<0.87 UJ
<0.3 UJ
<0.28 UJ
9.3 J
<2 UJ
1.5 J
<2 UJ
<1 UJ
1.6 J
<0.41 UJ
12 J
Jun-22
<10
NA
NA.
8.8 J
<2
<0.53
<0.2
<0.67
<0.3
<0.28
31.1 J
<2
1.5 J
<2 UJ
<1
<4.3 U
<0.41
60.9 J
H-21
-------
VOCs by EPA Method 8260 (pg/L)
Well ID
Date
c
o
8
I
1
8
jgj>
fe
Benzene
! e
SI
Carbon Disulfide
Chiorobenzerie
Chioroethane
Chloroform
Ol
h o
•O Q
1,2-
Dichioroethane
2-Hexanone
Ethylbenzene
Methylene
chloride
4-Methyl-2-
pentanone
Toluene
¦S
I
0
1
Kylenes
S
r
1
1400
13
0.0042
5
81
100
2100
80
70
5
3,8
700
5
$30
1,000
2
3,500
Oct-00
130
<50
<50
210
<10
<5.0
<5.0
<5.0
<5.0
<5.0
1,500
58.0
130
140
18
250
<2.0
340
Oct-01
120
<50
<50
91.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
1,100
<5.0
98
120
11
140
<2.0
270
Oct-02
160
<50
<50
m
<10
<5.0
<5.0
<5.0
<5.0
<5.0
1,100
<5.0
62
88
<5.0
90
<2.0
210
Feh-03
100
<50
<50
54
<10
<5.0
<5.0
<5.0
<5.0
<5.0
1,000
<5.0
67
100
<5.0
91
<2.0
200
Jun-03
62
<50
<50
43
<10
<5.0
<5.0
<5.0
<5.0
<5.0
750
<5.0
58
130
<5.0
68
<2.0
170
Oct-03
82
<50
<50
48
<10
<5.0
<5.0
<5.0
<5.0
<5.0
1,000
<5.0
70
98
<5.0
73
<2.0
180
Feb-04
<20
<50
<50
20
<10
<5.0
<5.0
<5.0
<5.0
<5.0
290
<5.0
69
5.8
<5.0
37
<2.0
240
Jun-04
61
<50
<50
34
<10
<5.0
<5.0
<5.0
<5.0
<5.0
630
<5.0
54
75
<5.0
59
<2.0
150
Oct-04
91
<50
<50
2®
240
<5.0
<5.0
<5.0
<5.0
<5.0
690
<5.0
45
48
<5.0
52
<2.0
140
Feb-05
370
<50
<50
110
14
<5.0
<5.0
<5.0
<5.0
<5.0
3,000
<5.0
320
340
<5.0
260
<2.0
1,000
Jun-05
46
<50
<50
38
14
<5.0
<5.0
<5.0
<5.0
<5.0
780
<5.0
78
100
<5.0
70
<2.0
220
Oct-05
140
<50
<50
34
<10
<5.0
<5.0
9.2
<5.0
<5.0
630
<5.0
53
<5.0
<5.0
51
<2.0
170
Feb-06
01
<50
<50
35
13
<5.0
<5.0
<5.0
<5.0
<5.0
830
<5.0
100
75
<5.0
84
<2.0
340
Jul-GB
<100
<50
<50
30
<10
<5.0
<5.0
<5.0
<5.0
<5.0
640
<5.0
36
48
<5.0
32
<2.0
110
Nov-06
<100
<250
<250
28
<50
<25
<25
<25
<25
<5.0
580
<50
32
51
<50
33
<10
110
May-07
45
<50
<50
17
<10
<5.0
<5.0
<5.0
<5.0
<5.0
460
<10
15
20
<10
20
<2.0
50
Nov-07
30
<50
<50
24
<10
<5.0
<5.0
<5.0
<5.0
<5.0
400
<10
26
30
<10
30
<2.0
84
M ay-08
20
<50
<50
23
<10
<5.0
<5.0
<5.0
<5.0
<5.0
260
<10
38
17
<10
33
<2.0
120
Nov-OB
24
<50
<50
28
<10
<5.0
<5.0
<5.0
<5.0
<5.0
26
<10
42
18
<10
42
<2.0
57
May-09
12
<100
<100
27
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
190
<5.0
58
13
<5.0
46
<2.0
187
Dec-09
<10
<100
<100
14
12
<5.0
<1.0
<5.0
<1.0
<1.0
93
<5.0
25
5.4
<5.0
24
<2.0
53
Jun-10
<20
NA
NA
18
<10
<5.0
<5.0
<5.0
<5.0
<5.0
110
<10
44
<5.0
<10
35
<2.0
130
EX-08
Dec-10
<20
<50
<50
19
<10
<5.0
<5.0
<5.0
<5.0
<5.0
140
<10
46
<5.0
<10
32
<2.0
140
Jun-11
<20
NA
NA
13
<10
<5.0
<5.0
<5.0
<5.0
<5.0
79
<10
34
<5.0
<10
26
<2.0
100
Dec-11
<50.0
NA
NA
11.6
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
73.9
<10.0
26.4
<5.00
<10.0
22.0
<1.00
77.1
Jul-13
<50.0
NA
NA
8.01
<50.0
<1.00
0.4 03 J
<1.00
<1.00
<1.00
56.9
<10.0
14.1
0.607 J
<10.0
17.7
<1.00
44
Jun-14
<11
NA
NA
2.6
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
136
<2
1.3
<2
<1
4.1
<0.33
4.5
Dec-14
<21
NA
NA
7.7
<3
<0.4
<0.40
<1
<0.62
<0.65
87,7
<4
13.5
<1.1
<2
19
<0.65
46.7
Jun-15
<10
NA
NA
10
<1.2
5.3
0.61 J
<0.5
<0.3
<0.22
80.7
<2
18.4
<2
<1
22
<0.25
57.1
Sep-1 5
<10
NA
NA
8.2
<1.2
<0.29
<0.2 UJ
<0.5
<0.3
<0.22
66.8
<2
31.9
<2
<1
24.2
<0.25
90.8
Dec-15
<10
NA
NA
5.9
<1.2
<0.3 U
0.62 J
<0.5
<0.3
<0.22
46.1
<2
42.4
<2
<1
10
<0.25
122
Dec-1 5
<10
NA
NA
7.9
<1.2
<0.29
0.75 J
<0.5
<0.3
0.24 J
40.5
<2
57.6
<2
<1
21.9
<0.25
164
Jun-16
<10
NA
NA
7.8
<2.8
0.37 J
<0.2
8.4
<0.3
<0.31
97.9
<2
32.1
<2
<1.4
35.6
<0.31
105
Dec-1 6
<10 UJ
NA
NA
8,3 J
<2.6 UJ
<0.23 UJ
<0.2 UJ
<0.63 UJ
<0.3 UJ
<0.31 UJ
57.1 J
<2 UJ
59.7 J
<2 UJ
<1.4 UJ
23.7 J
<0.31 UJ
164 J
Jurt-17
<10
NA
NA
7.4
<2
<0.53
<0.2
1.9 J
<0.3
<0.28
50.6
<2
35.5
<2
<1
26.9
<0.41
187
Dec-17
<10
NA
NA
8.7
<2
<0.53
<0.2
<0.67
<0.3
0.3 J
67.8
<2
86.3
<2
<1
26.3
<0.41
222
Jun-18
<10
NA
NA
11
<2
<0.53
<0.2
<0.67 UJ
<0.3
0.32 J
94.5
<2
158
<2
<1
42.7
<0.41
451
Dec-1 3
<10
NA
NA
8.2
<2
<0.53
<0.2
<0.67
<0.3
Q.34J
64
<2
93.9
<2
<1
30.9
<0.41
294
Jun-19
<20
NA
NA
8
<4
<1.1
<0.4
<1.3
<0.6
<0.55
52.1
<4
146
<4
<2
31.6
<0.82
468
Dec-1 9
<20
NA
NA
5.3
<4
<1.1
<0.4
<1.3
<0.6
<0.55
37
<4
101
<4
<2
20.5
<0.82
312
Jun-20
<20
NA
NA
5.7
<4
<1.1
<0.4
<1.3
<0.6
<0.55
39.3
<4
130
<4
<2
19.9
<0.82
445
Dec-20
<10 UJ
NA
NA
2.9
<2 UJ
<0.53 UJ
<0.2 UJ
<0.67 UJ
<0.3 UJ
<0.28 UJ
35.5
<2 UJ
6
<2 UJ
<1 UJ
2.3 J
<0.41 UJ
42.1 J
Jun-21
<10
NA
NA
5.8
<2
<0.53
<0.2
<0.67
<0.3
0.77 J
43.8
<2
SB
<2
<1
18
<0.41
361
Dee-21
<20
NA
NA
5.2
<4
<1.1
<0.4
<1.3 UJ
<0.6
<0.55
7.9
<4
117
<4
<2
11.3
<0.82
482
Jun-22
<20
NA
NA
7.1
<4
<1,1
<0.4
<1.3
<0.6
<0.55
10.6
<4
37.8
<4 UJ
<2
25 J+
<0.82
522 J
H-22
-------
VOCs by EPA Method 8260 (jig/L)
Well ID
Date
QJ
c
a
s
1
c
o
8
-------
VOCs by EPA Method 8260 (pg/L)
Well ID
Date
1
S
.¦te
n
Acrolein
as
1
o
¦S 2"
m UJ
...
Carbon Disulfide
1
c
1
o
S
o
Chioraethane
Chloroform
cis-1,2-
Dichloroethene
1,2-
Dichloroethane
2-Hexanone
Ethylbenzene
Methylene
chloride
4-M ethyl-2-
pentanone
¦|
t-
Vinyl chloride
1
>,
S
andard(,M':
1400
13
0,0042
5
560
81
100
2 WO
80
70
5
3,8
700
5
630
1,000
2
3,500
Oct-OO
330
<50
<50
1,800
15
<5.0
<5.0
<5.0
<5.0
<5.0
350
<5.0
2,100
98
28
2,300
<2.0
4,800
Oct-01
240
<50
<50
880
<10
<5.0
8.8
<5.0
<5.0
<5.0
220
<5.0
2,400
28
37
1,800
<2.0
4,500
Oct-02
190
<50
<50
500
11.0
<5.0
8.3
<5.0
<5.0
<5.0
200
<5.0
2,200
6.6
<5.0
1,000
<2.0
5,100
Feb-03
110
<50
<50
280
<10
<5.0
8.8
<5.0
<5.0
<5.0
140
<5.0
1,000
5.1
<5.0
390
<2.0
2,700
Jun-03
74
<50
<50
290
<10
7.7
<5.0
<5.0
<5.0
<5.0
120
<5.0
2,000
5.1
<5.0
750
<2.0
4,800
Oct-03
88
<50
<50
280
<10
<5.0
6.3
<5.0
<5,0
<5.0
160
<5.0
2,900
<5,0
<5.0
900
<2.0
6,100
Feb-04
<20
<50
<50
190
<10
8.0
<5.0
<5.0
<5.0
<5.0
94
<5.0
1,800
<5.0
<5.0
860
<2.0
4,800
Jun-04
84
<50
<50
170
<10
<5.0
8.8
<5.0
<5.0
<5.0
120
<5.0
1,300
<5.0
<5.0
480
<2.0
3,100
Oct-04
84
<50
<50
250
<10
<5.0
7.9
<5.0
<5.0
<5.0
140
<5.0
2,000
<5.0
<5.0
740
<2.0
4,800
Feb-Q5
<200
<500
<500
<50
<100
<50
<50
<50
<50
<5.0
<50
<5.0
1,700
<50
<5.0
130
<2.0
4,400
Jun-05
61
<50
<50
210
<10
7.8
8.7
<5.0
<5.0
<5.0
72
<5.0
2,000
<5.0
<5.0
760
<2.0
4,800
Oct-05
<20
<50
<50
180
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
2,700
<5,0
<5.0
710
<2.0
4,300
Feb-08
31
<50
100
150
<10
<5.0
<5.0
<5.0
<5.0
<5.0
19
<5.0
2,700
<5.0
<5.0
340
<2.0
6,500
Jul-08
<200
<50
<50
210
<10
<5.0
<5.0
<5.0
<5.0
<5.0
100
<5.0
2,200
<1.0
<5.0
850
<2.0
5,100
Nov-08
<400
<1,000
<1,000
170
<200
<100
<100
<100
<100
<100
120
<200
2,600
<100
<200
900
<40
6,500
May-0?
<400
<1,000
<1,000
100
<200
<100
<100
<100
<100
<100
130
<200
1,800
<100
<200
470
<40
4,400
Nov-07
<400
<1,000
<1,000
120
<200
<100
<100
<100
<100
<100
<100
<200
2,200
<100
<200
580
<40
5,200
M ay-08
<1,000
<2,500
<2,500
<250
<500
<250
<250
<250
<250
<250
<250
<500
2,600
<250
<500
870
<100
6,200
Nov-08
<400
<1,000
<1,000
130
<200
<100
<100
<100
<100
<100
<100
<200
2,500
<100
<200
850
<40
6,200
M ay-08
<400
<4,000
<4,000
120
<200
<200
<40
<200
<40
<40
<40
<200
3,500
<80
<200
800
<80
8,700
Dec-09
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Jun-10
<20
NA
NA
80
<10
<5.0
<5.0
<5.0
<5.0
<5.0
89
<10
2,100
<5.0
<10
490
<2.0
<50
Dec-10
<400
<1,000
<1,000
<100
<200
<100
<100
<100
<100
<100
<100
<200
1,900
<100
<200
370
<40
4,700
Jun-11
<2,000
NA
NA
<500
<1,000
<500
<500
<500
<500
<500
<500
<1,000
2.000
<500
<1,000
<500
<200
5,000
EX-10
Dec-11
<50.0
NA
NA
54,2
<50.0
<1.00
3.07
<1.00
<1.00
2.05
47.5
<10.0
1,570
<5.00
<10.0
320
<1.00
3,730
May-12
<50.0
NA
NA
44.2
<50.0
<1.00
3.12
<1.00
<1.00
2.15
49.2
<10.0
1,480
<5 00
<10.0
320
<1.00
3,670
Dec-12
<50.0
NA
NA
38.3
<50.0
<1.00
2.91
<1.00
<1.00
2.77
48.2
<10.0
1,190
<5.00
<10.0
155
<1.00
2,830
Jun-13
11.2 J
NA
NA
34.8
<50.0
0.492 J
2.89
<1.00
<1.00
2.50
44,2
<10.0
1,330
<5.00
<10.0
183
<1.00
3,190
Dec-13
<210 UJ
NA
NA
25.5 J
<30 UJ
<4 UJ
<4.8 UJ
<10 UJ
<8.2 UJ
<8.5 UJ
21,2 J
<40 UJ
987 J
<40 UJ
<20 UJ
136 J
<8.5 UJ
2,680 J
Jun-14
<11
NA
NA
1.3
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
1.3
<2
56.6
<2
<1
8.7
<0.33
147
Dec-14
<11
NA
NA
22
<1.5
<0.2
<0.24
0.75 J
<0.31
1.7
31,1
<2
388 J
<0.53
<1
45.1 J
<0.33
1,100 J
Jun-15
<50
NA
NA
5.9
<5.8
5.2 J
<1
<2.5
<1.5
<1.1
4 J
<10
330 J
<10
<5
21.3
<1.3
885 J
Sep-15
<10
NA
NA.
13
<1.2
1.3 J
<0.2 UJ
<0.5
<0.3
0.85 J
4.7
<2
495
<2
<1
79.3
<0.25
1,270
Dec-15
<50
NA
NA
8,7
<5.8
<1.6 U
<1
<2.5
<1.5
<1.1
4.1 J
<10
438
<10
<5
45.1
<1.3
1,120
Dec-15
10.3 J
NA
NA
8.2
14.3
<0.29
0.33 J
<0.5
<0.3
0.81 J
3.8
<2
478
<2
<1
35.4
<0.25
1,280
Jun-16
23 J
NA
NA
9.8
52
<0.23
<0.2
<0.63
<0 3
<0.31
10.9
<2
369 J
<2
<1.4
40.8
<0.31
970 J
Dec-18
<10 UJ
NA
NA
3.1 J
<2.8 UJ
<0.23 UJ
<0.2 UJ
<0.63 UJ
<0.3 UJ
<0.31 UJ
1.3 J
<2 UJ
159 J
<2 UJ
<1.4 UJ
18.9 J
<0.31 UJ
506 J
Jun-1?
<20
NA
NA
2.1
<4
<1.1
<0.4
<1.3
<0.8
0.8 J
2.2
<4
167
<4
<2
11.4
<0.82
498
Dec-17
<20
NA
NA
22,7
<4
<1.1
<0.4
<1.3
<0.8
1 J
2.9
<4
1500
5.1 J
<2
128
<0.62
3780
Jun-18
<10
NA
NA
0.92 J
<2
<0.53
<0.2
<0,87 UJ
<0.3
<0.28
<0.31
<2
65.5
<2
<1
4.6
<0.41
184
Dec-18
<10
NA
NA
12.6
<2
<0.53
<0.2
<0.07
<0.3
1.7
3.4
<2
845
<2
<1
81.2
<0.41
2,190
Jun-19
<200
NA
NA
12.4 J
<40
<11
<13
<6
<5.5
<8.2
<40
1,110
<40
<20
80.2
<8.2
2,940
Dec-19
<200
NA
NA
11 J
<40
<11
<4
<13
<6
<5.5
<8.2
<40
1,020
<40
<20
50.3
<8.2
2,770
Jun-20
<200
NA
NA
9.3 J
<40
<11
<4
<13
<6
<5.5
<8.2
<40
1,160
<40
<20
47.8
<8.2
3,260
Dec-20
<200
NA
NA
8.3 J
<40
<11
<4
<13
<6
<5.5
<8.2
<40
1,200
<40
<20
49.6
<8.2
3,750
Juri-21
<200
NA
NA
8.7 J
<40
<11
c4
<13
<6
<5.5
<8.2
<40
1,240
<40
<20
49.8
<8.2
3,360
Dec-21
<10 UJ
NA
NA
1.7 J
<2 UJ
<0.53 UJ
<0.2 UJ
<0.67 UJ
<0.3 UJ
<0.28 UJ
0.89 J
<2 UJ
23.9 J
<2.7 UJ
<1 UJ
2.8 J
<0.41 UJ
198 J
Jun-22
<10
NA
NA
3.4
3 J
0.54 J
<0.2
<0.87
<0.3
2.8
2.7
<2
69.2
<2 UJ
<1
17.9 J+
<0.41
482 J
H-24
-------
VOCs by EPA Method 8260 (pg/L)
Well ID
Date
c
a>
Acetonitrile
c
ju
Q
b
Benzene
2-Butanane
(MEK)
Carbon Disulfide
Chlorobenzene
Chloroethane
Chloroform
cis-1,2-
Dichloroethene
1,2-
Dichioroethane
2-Hexanone
Ethylbenzene
Methylene
chloride
o
f £
31
Toluene
QJ
73
1
Kylenes
S
andard'"'3':
1400
13
0,0042
5
560
81
100
2100
80
70
5
3,8
700
5
830
1,000
2
3,500
Oct-OQ
250
<50
<50
120
<10
<5.0
<5.0
<5.0
<5.0
<5.0
1,600
<5.0
180
200
1 5
130
<2.0
450
Oct-01
280
<50
<50
88
<10
9.4
6.7
<5.0
1,500
<5.0
420
<5.0
130
220
12
150
<2.0
220
Oct-02
160
<50
<50
15
10.0
<5.0
7.8
<5.0
410
<5.0
56
<5.0
31.0
110
<5.0
150
<2.0
84
Feb-03
130
<50
<50
21
<10
9.5
5.9
<5.0
610
<5.0
63
<5.0
81
180
<5.0
170
<2.0
190
Jun-03
94
<50
<50
16
<10
7.4
7.8
<5.0
370
<5.0
34
<5.0
56
190
<5.0
140
<2.0
140
Oct-03
8B
<50
<50
8.3
<10
<5.0
5.6
<5.0
190
<5.0
25
<5.0
27
88
<5.0
140
<2.0
73
Feb-04
37
<50
<50
6
<10
<5.0
5.0
<5.0
76
<5.0
14
<5.0
15
38
<5.0
87
<2.0
43
Jun-04
69
<50
<50
9
<10
<5.0
7.5
<5.0
100
<5.0
18
<5.0
31
79
<5.0
120
<2.0
90
Oct-04
42
<50
<50
<5.0
<10
<5.0
7.2
<5.0
48.0
<5.0
11
<5.0
17
32
<5.0
100
<2.0
50
Feb-05
<20
<50
<50
<5.0
<10
<5.0
7.3
<5.0
13.0
<5.0
7,5
<5.0
14.0
24
<5.0
100
<2.0
41
Jun-05
24
<50
<50
<5.0
<10
<5.0
8.0
<5.0
6.8
<5.0
<5.0
<5.0
7.2
11
<5.0
59
<2.0
23
Oct-05
31
<50
<50
<5.0
<10
<5.0
8.0
<5.0
<5.0
<5.0
<5.0
<5.0
5.B
7.7
<5.0
57
<2.0
18
Feb-06
<20
<50
<50
<5.0
<10
<5,0
8.1
<5,0
<5.0
<5,0
<5,0
<5,0
<5.0
<5.0
<5.0
50
<2.0
11
Ju!-0B
<20
<50
<50
<5.0
<10
<5.0
8.3
<5.0
<5.0
<5.0
<5.0
<5.0
6.2
<5.0
<5.0
75
<2.0
19
Nov-08
<20
<50
<50
<5.0
<10
<5.0
5.5
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
45
<2.0
6.9
M ay-07
<20
<50
<50
<5.0
<10
<5.0
5.5
<5.0
<5.0
<5.0
<5.0
<10
5.4
<5.0
<10
62
<2.0
18
Nov-0?
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
28
<2.0
<5.0
May-08
<20
<50
100
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
29
<2.0
5.5
Nov-08
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<10
<5,0
<5.0
<10
38
<2.0
8.4
M ay-09
<10
<100
<100
<1.0
<5.0
<5.0
3.8
<5.0
<1.0
<1.0
3.4
<5,0
1.6
<2.0
<5.0
32
<2.0
5.4
Dec-09
<10
<100
<100
<1.0
<5.0
<5.0
3.9
<5,0
<1.0
<1.0
3.2
<5.0
<1.0
<2.0
<5.0
B.7
<2.0
3.4
Jun-10
<20
NA
NA
7,9
<10
<5.0
<5.0
<5,0
<5.0
<5.0
18
<10
B.6
7.8
<10
29
<2.0
23
Dec-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
20
<2.0
<5,0
EX-11
Jun-11
<20
NA
NA
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
18
<2.0
<5.0
Dec-'! 1
<50.0
NA
NA
<1.00
<50.0
<1.00
2.58
<1.00
<1.00
<1.00
2.80
<10.0
<1.00
<5.00
<10.0
12.0
<1.00
<3.00
M ay-12
<50.0
NA
NA
<1.00
<50.0
<1.00
2.10
<1.00
<1.00
<1.00
2.14
<10.0
<1.00
<5.00
<10.0
11.1
<1.00
<3.00
Dec-1 2
<50.0
NA
NA
<1.00
<50.0
<1.00
1.67
<1.00
<1.00
<1.00
2.36
<10.0
<1.00
<5.00
<10.0
8.04
<1.00
<3.00
Jun-13
<50.0
NA
NA
0.259 J
<50.0
0.258 J
1,33
<1.00
<1.00
<1.00
1.82
<10.0
0.484 J
<5.00
<10.0
5.93
<1.00
1.57 J
Dec-1 3
<11 UJ
NA
NA
<0.24 UJ
<1,5 UJ
<0.2 UJ
<0.24 UJ
<0,5 UJ
<0.31 UJ
<0.33 UJ
0.72 J
<2 UJ
<0.20 UJ
<2 UJ
<1 UJ
2.1 J
<0.33 UJ
<0.86 UJ
Jun-14
<11
NA
NA
<0.24
<1.5
<0.2
0.87 J
<0.5
<0.31
<0.33
1.5
<2
<0,20
<2
<1
2.2
<0.33
<0,68
Dec-14
<11
NA
NA
<0.24
<1.5
<0.2
0.41 J
<0.5
<0.31
<0.33
0.99 J
<2
0.29 J
<0.53
<1
<1.2 U
<0.33
<0.68
Jun-15
<10
NA
NA
0.21 J
<1.2
<0.29
0.7 J
<0.5
<0.3
<0.22
1.2
<2
<0.2
<2
<1
1.4
<0.25
<0.51
Dec-1 5
<10
NA
NA
<0.2
<1.2
<0.29
0.54 J
<0.5
<0.3
<0.22
1.1
<2
0.22 J
<2
<1
1.1
<0.25
0.54 J
Jun-16
<10
NA
NA
0,31 J
<2.8
<0.23
0.84 J
<0.63
<0.3
<0.31
1.9
<2
0.69 J
<2
<1.4
2.9
<0.31
1.3 J
Dec-18
<10
NA
NA
0.22 J
<2.8
<0.23
0.72 J
<0.63
<0.3
<0.31
1.8
<2
0.81 J
<2
<1,4
0.78 J
<0.31
1.5 J
Jun-17
<10
NA
NA
<0.31
<2
<0.53
0.98 J
<0.67
<0.3
<0.28
2
<2
0.4 J
<2
<1
1.7
<0.41
1.1 J
Dec-17
<10
NA
NA
<0.31
<2
<0.53
0.47 J
<0.67
<0.3
<0.20
1.3
<2
<0.38
<2
<1
2
<0.41
<0.72
Jun-18
<10
NA
NA
<0.31
<2
<0.53
0.59 J
<0.67
<0.3
<0.28
1.4
<2
<0.38
<2
<1
2.8
<0.41
0.92 J
Dec-18
<10
NA
NA
<0.31
<2
<0.53
0.37 J
<0.67
<0.3
<0.20
1
<2
<0.38
<2
<1
1.2
<0.41
0.84 J
Jun-19
<10
NA
NA
<0.31
<2
<0.53
0.51 J
<0.67
<0.3
<0.28
1.3
<2
<0.38
<2
<1
1.1
<0.41
<0.72
Dec-19
<10
NA
NA
<0.31
<2
<0.53
0.35 J
<0.67
<0.3
<0.28
1
<2
<0.38
<2
<1
1.3
<0.41
0.88 J
Jun-20
<10
NA
NA
<0.31
<2
<0.53
0.44 J
<0.67
<0.3
<0.28
1.3
<2
<0.38
<2
<1
1.9
<0.41
<0.72
Dec-20
<10
NA
NA
<0.31
<2
<0.53
0.33 J
<0.67
<0.3
<0.28
1.1
<2
<0.36
<2
<1
1.1
<0.41
<0.72
Jun-21
<10 UJ
NA
NA
<0.31
<2
<0.53
0.4 J
<0.67
<0.3
<0.28
1.8
<2
<0,38
<2
<1
1.7
<0.41
<0.72
Dec-21
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.87 UJ
<0.3
<0.28
1
<2
<0.38
<2
<1
0.81 J
<0.41
<0.72
Jun-22
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
2.3 J
<2
0.45 J
<2 UJ
<1
<8 U
<0.41
1.4 J
H-25
-------
voc
s by EPA M
sthod 8260 (pgrt.)
Wei! ID
Date
S
I
1
1
I
If
Carbon Disulfide
I
I
J
51
J
2-Hexanone
1
Methylene
chloride
CN UJ
1!
I
h-
vinyl chloride
I
S
andard^'2,3,1
1400
13
0.0042
5
55a
100
2100
80
70
5
3,8
700
5
1,000
2
3,500
Oct-00
260
<50
<50
25
15
<5.0
12
<5,0
27
<5.0
100
<5.0
<5.0
74
<5.0
B.4
<2.0
<5.0
Oct-01
290
<50
<50
<5.0
23
<5.0
12
<5.0
31
<5.0
8.5
<5.0
<5,0
as
<5,0
63
<2.0
<5.0
Oct-02
200
<50
<50
<5.0
17
<5.0
9
<5,0
8
<5.0
<5,0
<5,0
<5.0
5.8
<5.0
170
<2.0
<5.0
Feb-03
100
<50
<50
<5.0
<10
<5.0
5.4
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
150
<2.0
16.0
Jun-03
44
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5,0
<5.0
<5,0
180
<2,0
5.3
Oct-03
50
<50
<50
<5.0
<10
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<5,0
<5.0
<5,0
<5,0
140
<2.0
<5.0
Feb-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
37
<2.0
5.3
Jun-D4
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5,0
<5.0
<5.0
<5,0
<5.0
<5.0
28
<2.0
<5,0
Oct-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<5.0
<5,0
<5,0
<5.0
43
<2.0
<5,0
Feb-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
24
<2.0
<5.0
Jun-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5,0
<5.0
<5.0
<5,0
<5.0
<5,0
<5,0
15
<2.0
<5.0
Oct-05
<20
<50
<50
<5.Q
<10
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<5,0
<5,0
<5,0
<5.0
18
<2.0
<5,0
Feb-OB
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5,0
<5.0
<5.0
<5,0
<5.0
10
<2,0
<5.0
Jui-OB
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
15
<2.0
<5.0
Nov-06
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5,0
<5.0
<5,0
<5.0
<10
<5.0
<5,0
<10
11
<2.0
<5,0
May-07
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
7.2
<2.0
<5.0
Nov-07
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5,0
<5,0
<5.0
<5.0
<10
<5,0
<5,0
<10
<5.0
<2.0
<5,0
May-08
<20
<50
<50
<5.0
<10
5.6
<5.0
<5,0
<5.0
<5.0
<5.0
<10
<5.0
<5,0
<10
5.1
<2.0
<5.0
Nov-08
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<10
<5.0
<5,0
<10
<5.0
<2.0
<5.0
May-09
<10
<100
<100
<1.0
<5.0
<5.0
<1.0
<5,0
<1.0
<1,0
<1,0
<5,0
<1,0
<2,0
<5,0
2.0
<2,0
<2.0
Dee-09
<10
<100
<100
<1.0
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
1.5
<5.0
<1.0
<2,0
<5.0
<1.0
<2.0
<3.0
Jun-10
<20
NA
NA
<5.Q
<10
<5,0
<5,0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5,0
Dec-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<10
<5.0
<5,0
<10
<5,0
<2.0
<5,0
EX-12
Jun-11
<20
NA
NA
<5.0
<10
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5,0
Dec-11
<50.0
NA
NA
<1.00
<50.0
<1,00
<1,00
<1.00
<1.00
<1.00
<1.00
<10,0
<1.00
<5.00
<10,0
<1.00
<1.00
<3.00
May-12
<50.0
NA
NA
<1.00
<50.0
<1.00
<1,00
<1.00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10,0
<1.00
<1.00
<3,00
Dec-12
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1.00
<10.0
<1,00
<5.00
<10,0
<1.00
<1.00
<3.00
Jun-1 3
<50.0
NA
NA
<1.00
<50.0
<1.00
<1,00
<1,00
<1.00
<1.00
0.262 J
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
Dec-13
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0,5
<0.31
<0.33
0.43 J
<2
<0,28
<2
<1
<0,3 U
<0.33
<0,60
Jun-14
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
<0.24
<2
<0.28
<2
<1
<0.28 U
<0.33
<0.66
Dec-14
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
0.74 J
<2
<0.28
<0.53
<1
<0.34 U
<0.33
1.3 J
Jun-1 5
<10
NA
NA
<0.2
<1.2
<0.29
<0.2
<0,5
<0,3
<0.22
0,97 J
<2
<0.2
<2
<1
<0,4
<0.25
1,2 J
Dec-15
<10
NA
NA
<0.2
<1.2
<0.29
<0.2
<0.5
<0.3
<0.22
0.71 J
<2
<0.2
<2
<1
<0.4
<0.25
0.58 J
Jun-1 e
<10
NA
NA
<0.2
<2.8
<0.23
<0,2
<0,63
<0,3
<0.31
0.7 J
<2
<0,25
<2
<1.4
0,25 J
<0.31
0,93 J
Dec-16
<10
NA
NA
<0.2
<2.8
<0.23
<0.2
<0.63
<0.3
<0.31
0.08 J
<2
<0.25
<2
<1.4
<0.2
<0.31
0.8 J
Jun-17
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.2B
1,1
<2
<0.36
<2
<1
<0.3
<0.41
0.82 J
Dec-17
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
1.2
<2
<0.36
<2
<1
<0.3
<0.41
1.7 J
Jun-1 B
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
0.75 J
<2
<0.36
<2
<1
<0.3
<0.41
3
Dec-18
<10
NA
NA
<0.31
<2
<0.53
<0,2
<0.67
<0.3
<0.28
0.81 J
<2
<0.36
<2
<1
<0.3
<0.41
3.3
Jun-19
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
0.84 J
<2
<0,36
<2
<1
<0.3
<041
1.0 J
Dec-19
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.07
<0.3
<0.28
0.89 J
<2
<0,36
<2
<1
<0.3
<0.41
2.3 J
Jun-20
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0,67
<0,3
<0.28
1,2
<2
<0.36
<2
<1
<0,3
<0.41
1,4 J
Dec-20
<10
NA
NA
<0.31
<2
<0.53
<0,2
<0.87
<0.3
<0.28
0.76 J
<2
<0,36
<2
<1
<0,3
<0.41
0,91 J
Jun-2!
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
0,5 J
<2
<0.36
<2
<1
<0.55 U
<0.41
1.8 J
Dec-21
<10
NA
NA
<0.31
<2
<0.53
<0,2
<0.67
<0.3
<0.2B
0.33 J
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Jun-22
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0,3
<0.28
<0.31
<2
<0.38
<2
<1
<2.8 U
<0.41
<0.72
H-26
-------
VOCs by EPA Method 8260 (jjg/L)
Well [D
Date
1
01
<
§
a
1
§
Benzene
2-Butanone
(MEK)
Carbon Disulfide
Chlorobenzene
Chloroethane
Chloroform
cis-1,2-
Dichloroethene
1,2-
Dichloroethane
2-Hexanone
Ethyibenzene
Methylene
chloride
4-Methyl-2-
pentanone
Toluene
Vinyl chloride
Xylenes
Standard1'1'2''"1'1:
1400
13
0,0042
5
560
81
100
2100
80
70
5
3,8
700
5
830
1,000
2
3,500
Oct-OO
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Oct-01
140
<50
<50
75
<10
<5.0
<5.0
<5.0
<5.0
<5.0
430
<5.0
180
19
10
120
<2.0
570
Oct-02
380
<50
<50
m
14.0
<5.0
<5.0
<5.0
<5.0
<5.0
§10
<5.0
130
26
<5.0
120
<2.0
460
Feb-03
54
<50
<50
37
<10
<5.0
<5.0
<5.0
<5.0
<5.0
420
<5.0
57
24
<5.0
80
<2,0
170
Juri-03
NA
NA
NA
NA
NA
NA
NA
NA
NA
<5.0
NA
NA.
NA
NA
NA
NA
NA.
NA
Oct-03
47
<50
<50
34
<10
6.6
<5.0
<5.0
<5.0
<5.0
310
<5,0
42
23
<5.0
62
<2.0
110
Feb-04
27
<50
<50
48
<10
6.6
<5.0
<5.0
<5.0
<5.0
600
<5.0
170
34
<5.0
94
<2.0
620
Jun-04
<20
<50
<50
22
<10
<5.0
<5.0
<5.0
<5.0
<5.0
81
<5.0
34
<5.0
<5.0
42
<2.0
97
Oct-04
28
<50
<50
26
<10
<5,0
<5.0
<5,0
<5.0
<5,0
280
<5.0
34
15
<5.0
50
<2,0
100
Feb-05
43
<50
<50
32
<10
<5.0
<5.0
<5.0
<5.0
<5.0
210
<5.0
130
<1.0
<5.0
83
<2.0
420
Jun-05
24
<50
<50
22
<10
<5.0
<5.0
<5.0
<5.0
<5.0
130
<5.0
29
6.5
<5.0
42
<2.0
89
Oct-05
52
<50
<50
20
<10
<5.0
<5.0
<5,0
<5,0
<5.0
110
<5.0
110
<1.0
<5.0
58
<2.0
380
Feb-06
<20
<50
<50
18
<10
<5.0
<5.0
<5.0
<5.0
<5.0
65
<5.0
28
<1.0
<5.0
38
<2.0
93
Jul-06
<20
<50
<50
25
<10
<5.0
<5.0
<5.0
<5.0
<5,0
190
<5.0
26
13
<5.0
41
<2.0
75
Nov-OB
<20
<50
<50
12
<10
<5.0
<5.0
<5.0
<5.0
<5.0
67
<10
20
<5.0
<10
29
<2.0
69
May-07
50
<50
<50
9,4
62
<5.0
<5.0
<5.0
<5.0
<5.0
50
<10
14
<5.0
<10
19
<2.0
48
Nov-07
<20
<50
<50
13
<10
<5.0
<5.0
<5.0
<5,0
<5.0
38
<10
16
<5.0
<10
27
<2,0
58
May-08
<20
<50
<50
17
<10
<5.0
<5.0
<5.0
<5.0
<5.0
23
<10
24
<5.0
<10
33
<2.0
80
Nov-08
<20
<50
<50
22
<10
<5.0
<5.0
<5.0
<5.0
<5.0
23
<10
21
<5.0
<10
35
<2.0
67
May-09
<10
<100
<100
1©
<5,0
<5.0
<1.0
<5.0
<1.0
<1.0
24
<5.0
22
<2.0
<5.0
33
<2.0
78
Dec-09
<10
<100
<100
4.0
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
11
<5.0
12
<2.0
<5,0
17
<2,0
47
Jun-10
<20
NA
NA
13
<10
<5.0
<5.0
<5.0
<5.0
<5.0
13
<10
16
<5.0
<10
25
<2,0
58
Dec-10
<20
<50
<50
10
<10
<5.0
<5.0
<5.0
<5.0
<5.0
21
<10
14
<5.0
<10
23
<2.0
50
Jun-11
<20
NA
NA
7
<10
<5,0
<5.0
<5.0
<5.0
<5.0
18
<10
13
<5.0
<10
21
<2.0
49
EX-13
Dec-11
<50,0
NA
NA
4.99
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
18.2
<10,0
10.1
<5.00
<10.0
15.9
<1.00
36.8
May-12
<50.0
NA
NA
5,67
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
32.1
<10.0
9.57
<5.00
<10.0
15.8
<1.00
31.4
Dec-12
<50.0
NA
NA
2.27
<50.0
<1.00
<1.00
<1.00
<1.00
<1,00
18.7
<10.0
7.73
<5.00
<10.0
12.0
<1.00
28.7
Jun-13
<50.0
NA
NA
1.99
<50.0
0.578 J
0.665 J
<1.00
<1.00
<1.00
17.3
<10.0
5.98
<5.00
<10.0
12.2
<1.00
28
Dec-13
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
0.31 J
<2
<0,28
<2
<1
<0.2
<0.33
<0.66
Jun-14
<11
NA
NA
1.3
<1.5
2.5
0.66 J
<0,5
<0.31
<0.33
14.1
<2
1.5
<2
<1
4,8
<0.33
4.8
Dec-14
<11
NA
NA
2.7
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
23.3
<2
6.3
<0.53
<1
18
<0.33
24.3
Jun-15
<10
NA
NA
1.4
<1.2
3,4
0.53 J
<0.5
<0.3
<0.22
28.6
<2
2.9
<2
<1
10.5
<0.25
11.7
Sep-15
<10
NA
NA
2.4
<1.2
0.89 J
<0.2
<0.5
<0.3
<0 22
23.6
<2
5.6
<2
<1
18.2
<0,25
17.8
Dec-15
<10
NA
NA
0.79 J
<1.2
<0.29
0.3BJ
<0.5
<0.3
<0.22
6.5
<2
0.99 J
<2
<1
7.7
<0.25
3.9
Dec-15
<10
NA
NA
1
<1.2
<0.29
0.39 J
<0.5
<0,3
<0.22
7.1
<2
1.8
<2
<1
8.8
<0.25
5.8
Jun-18
<10
NA
NA
3
<2.6
<0.23
<0.2
<0.63
<0.3
<0.31
47
<2
16.7
<2
<1.4
14.4
<0.31
49.3
Dec-16
<10 UJ
NA
NA
1 J
<2.6 UJ
<0.23 UJ
0.33 J
<0.63 UJ
<0,3 UJ
<0,31 UJ
7.9 J
<2 UJ
1.5 J
<2 UJ
<1.4 UJ
7.4 J
<0.31 UJ
4.7 J
Jun-1 7
<10
NA
NA
4,6
<2
<0.53
0.88 J
<0,67
<0.3
<0.28
34.8
<2
25,4
<2
<1
19,4
<0.41
73.8
Dec-17
<10
NA
NA
1.9
<2
<0.53
<0.2
<0.67
<0.3
<0.28
11.9
<2
4.8
<2
<1
11.8
<0.41
16.1
Jun-18
<10
NA
NA
2.5
<2
<0.53
<0.2
<0.67 UJ
<0.3
<0.28
28.7
<2
8.2
<2
<1
13.9
<0.41
24.1
Dec-18
<10
NA
NA
1.7
<2
<0.53
<0.2
<0.67
<0.3
<0.28
20.5
<2
3.8
<2
<1
10
<0.41
11.4
Jun-19
<10
NA
NA
1.7
<2
<0.53
<0.2
<0.67
<0.3
<0.28
14.8
<2
3.9
<2
<1
9.9
<0.41
12.7
Dec-19
<10
NA
NA
1.4
<2
<0.53
<0.2
<0.67
<0.3
<0.28
10.3
<2
3.2
<2
<1
9.1
<0.41
10.3
Jun-20
<10
NA
NA
1
<2
<0.53
<0.2
<0.67
<0,3
<0.28
9.6
<2
2.7
<2
<1
6,2
<0.41
8.3
Dec-20
<10
NA
NA
1.2
<2
<0.53
0.88 J
<0.67
<0.3
<0,28
12
<2
3.1
<2
<1
7.6
<0,41 UJ
10.5
Jun-21
<10
NA
NA
0.86 J
<2
<0.53
<0.2
<0.67 UJ
<0.3
<0.28
9.7
<2
1.8
<2
<1
5,6
<0.41
6
Dec-21
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67 UJ
<0.3
<0.28
0.97 J
<2
<0.36
<2
<1
0.34 J
<0.41
0,87 J
Jun-22
<10
NA
NA
<0.31
<2
<0.53
0.44 J
<0.67
<0.3
<0.28
2.8 J
<2
<0.36
<2 UJ
<1
<2.1 U
<0.41
2.5 J
H-27
-------
VOCs by EPA Method 8260 (jigO.)
¦8
£
I
3J
1
I ,,
jlj
.©
|
1
c
E
£
w
c 5
SI
...
.IE
a>
I
C
«u
Q
E
a
1
cr
o
1
fc
-fa: js.
1
1
2>
a
a
-I
, |
i §.
ti
© 1
1
w
c
Well 'D
Date
q
^ I.
a
,r,
^
... ..
—1 o
5 I m
n r.
o
h-
c
¦X
1400
13
. . ^ ( 5
u 10
81
100
2100
ac
5
-111
5
. 1 p}
¦/
3,500
-------
VOCs by EPA Method 8260 {\iglL)
Wei] ID
Date
c
1?
B
§
Acrolein
Benzene
2-Butanone
(MEK)
Carbon Disulfide
Chlorobenzerie
Chloroethane
Chloroform
cis-1,2-
Dichloroethene
1,2-
Dichloroethane
2-Hexanone
Ethylbenzene
Methylene
chloride
cn ai
^ o
§ ]§
Toluene
T5
O
-5
s
Kylenes
S
andardc1-2-3):
1400
13
0,0042
5
580
81
100
2100
80
70
5
3,8
700
5
630
1,000
2
3,500
Oct-OO
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
290
<5.0
<5.0
<1.0
<5.0
<5.0
<2.0
<5.0
Oct-01
<20
<50
<50
8,2
<10
<5.0
<5.0
<5.0
<5.0
<5.0
490
<5.0
<5.0
<5.0
<5.0
5.0
<2.0
<5.0
Oct-02
<20
<50
<50
7,8
<10
<5.0
<5.0
<5.0
<5.0
<5.0
680
<5.0
<5,0
<5.0
<5.0
7.1
<2.0
<5.0
Feb-03
<20
<50
<50
5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
730
<5.0
<5.0
<1.0
<5.0
<5.0
<2.0
<5.0
Jun-D3
<20
<50
<50
7,3
<10
<5.0
<5.0
<5.0
<5.0
<5.0
600
<5.0
6.7
<1.0
<5.0
<5.0
<2.0
<5.0
Oct-03
<20
<50
<50
6.3
<10
<5.0
<5.0
<5.0
<5.0
<5.0
700
<5.0
<5.0
<1.0
<5.0
5.2
<2.0
<5.0
Feb-04
<20
<50
<50
<5,0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
530
<5.0
<5.0
<1.0
<5.0
<5.0
<2,0
<5.0
Jun-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5,0
410
<5.0
<5.0
<1.0
<5.0
<5.0
<2.0
<5.0
Oct-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
520
<5.0
<5.0
<1.0
<5.0
<5.0
<2.0
<5.0
Feb-D5
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
720
<5.0
<5.0
<1.0
<5.0
<5.0
<2.0
<5.0
Jun-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
550
<5.0
<5.0
<1.0
<5.0
<5.0
<2.0
<5.0
Oct-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
500
<5.0
<5,0
<5.0
<5.0
<5.0
<2,0
<5.0
Feb-08
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
400
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jul-08
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Nov-06
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
300
<10
<5.0
<5.0
<10
<5.0
<2.0
<5,0
M ay-07
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5,0
<5.0
<5.0
300
<10
<5.0
<5.0
<10
<5.0
<2,0
<5.0
Nov-07
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
370
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
M ay-08
<40
<100
<100
<10
<20
<10
<10
<10
<10
<10
450
<20
<10
<10
<20
<10
<4.0
<10
Nov-08
<100
<250
<250
<25
<50
<25
<25
<25
<25
<25
600
<50
<25
<25
<50
<25
<10
<25
May-09
<10
<100
<100
1.0
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
550
<5.0
<1.0
<2.0
<5.0
<1.0
<2,0
1.9
Dec-09
<10
<100
<100
2.2
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
550
<5.0
<1.0
<2.0
<5.0
1.0
<2.0
1.9
Jun-10
<20
NA
NA
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
290
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Dec-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
450
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
LW-3
Jun-11
<40
NA
NA
<10
<20
<10
<10
<10
<10
<10
490
<20
<10
<10
<20
<10
<4.0
<10
Dec-11
<50.0
NA
NA
1.73
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
553
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
May-12
<50.0
NA
NA
1.45
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
432
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
Dec-12
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
345
<10.0
<1.00
<5.GO
<10.0
<1.00
<1.00
<3.00
Jun-13
<50.0
NA
NA
0,522 J
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
195
<10.0
0.280 J
<5.00
<10.0
<1.00
<1.00
0.773 J
Dec-13
<10
NA
NA
0.21 J
<3.1
<0.49
<0.2
<0.5
<0.28
<0.24
128
<2
<0.29
<2
<2.3
<0,2
<0.44
<0.5
Jun-14
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
1.3
<2
<0.28
<2
<1
<0.2
<0.33
<0.66
Dec-14
<11
NA
NA
1
<1.5
<0.2
<0.24
<0.5
<0.31
0.44 J
321
<2
1
<0.53
<1
<0.5? U
<0.33
3.2
Jun-15
<10
NA
NA
0.8BJ
<1.2
<0.29
<0.2
<0.5
<0.3
<0.22
319
<2
0.62 J
<2
<1
<0.4
<0.25
1.5 J
Dec-15
<50
NA
NA
<1
<5.8
<1.5
<1
<2.5
<1.5
<1.1
279
<10
<1
<10
<5
<2
<1.3
<2.8
Jun-1 6
<50
NA
NA
<1
<13
<1.2
<1
<3.1
<1.5
<1.6
375
<10
<1.3
<10
<7
<1
<1.8
<2.8
Dec-18
<10
NA
NA
2
<2.6
<0.23
<0.2
<0.83
<0.3
0.53 J
390
<2
0.42 J
<2
<1.4
0.83 J
<0.31
1.1 J
Jun-1?
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.87
<0.3
0.49 J
302 J
<2
<0.36
<2
<1
0.76 J
<0.41
0.99 J
Dec-17
<10
NA
NA
1.2
<2
<0.53
<0.2
<0.67
<0.3
0.33 J
289
<2
<0.36
<2
<1
0.51 J
<0.41
<0.72
Jun-18
<10
NA
NA
3.5
<2
<0.53
<0.2
<0.67 UJ
<0.3
0.8 J
403
<2
0.8 J
<2
<1
1.8
<0.41
1.7 J
Dec-18
<50
NA
NA
<1.6
<10
<2.7
<1
<3.3
<1.5
<1.4
247
<10
<1.8
<10
<5
<1.5
<2
<3.8
Jun-19
<25
NA
NA
<0.78
<5
<1.3
<0.5
<1.7
<0.75
<0.69
149
<5
<0.09
<5
<2.5
<0.75
<1
<1.8
Dec-19
32.4 J
NA
NA
<0.78
<5
<1.3
<0.5
<1.7
<0.75
<0.69
206
<5
<0.89
<5
<2,5
<0.75
<1
<1,8
Jun-20
<25
NA
NA
1.5 J
<5
<1.3
<0.5
<1.7
<0.75
<0.69
313
<5
<0.89
<5
<2.5
<0.75
<1
<1.8
Dec-20
<25
NA
NA
0.8 J
<5
<1.3
<0.5
<1,7
<0.75
<0.69
147
<5
<0.09
<5
<2.5
<0.75
<1
<1.8
Jun-21
<25
NA
NA
<0.78
<5
<1.3
<0.5
<1.7
<0.75
<0.89
121
<5
<0.89
<5
<2.5
<0.75
<1
<1.8
Dec-21
<10 UJ
NA
NA
<0.31 UJ
<2 UJ
<0.53 UJ
<0.2 UJ
<0.6? UJ
<0.3 UJ
<0.28 UJ
54.8 J
<2 UJ
<0.36 UJ
<2.4 UJ
<1 UJ
<0.3 UJ
<0.41 UJ
<0.?2 UJ
Jun-22
<10
NA
NA
<0,31
<2
<0.53
<0.2
<0.8?
<0.3
<0.28
49.8 J
<2
<0,36
<2
<1
<1.6 U
<0.41
<0.72
H-29
-------
VOCs by EPA Method 8260 (yflft.)
Well ID
Date
I
I
1
i
Si
l
I
|
|
c
h §
1
1
I
Jjj
CN *
11
1
H
1
I
CN
S
aridard(1,2,3):
1400
13
0,0042
5
560
81
100
2100
80
5
3,8
700
5
630
1,000
2
3,500
Qct-00
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-01
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-D2
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-03
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-03
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-03
<20
<50
<50
6.3
<10
<5,0
<5.0
<5.0
<5.0
<5.0
700
<5.0
<5.0
<5.0
<5.0
5.2
<2.0
<5.0
Feb-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-04
<20
<50
<50
<5.0
<10
<5,0
<5.0
<5.0
<5.0
<5.0
<5.0
<5,0
<5.0
<5.0
<5,0
<5.0
<2.0
<5.0
Oct-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5,0
Feb-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-08
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jul-06
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5,0
Nov-08
<20
<50
<50
<5.0
<10
<5,0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
M ay-07
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5,0
Nov-07
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
May-08
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
7.0
<5.0
<10
<5.0
<2.0
18
Nov-08
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
M ay-09
<10
<100
<1 00
<1.0
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<2.0
<5.0
<1.0
<2.0
<2.0
Dec-09
<10
<100
<1 00
<1.0
<5.0
<5,0
<1.0
<5.0
<1 0
<1.0
<1.0
<5,0
<1.0
<2.0
<5.0
<1.0
<2.0
<3.0
Jun-10
2S
NA
NA
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Dec-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
LW-4
Jun-11
<20
NA
NA
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Dec-11
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
May-12
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3,00
Dec-12
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
Jun-13
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1 -00
<10.0
<1.00
<5.00
<10.0
0.978 J
<1.00
<3.00
Dec-13
<10
NA
NA
<0.21
<3.1
<0.49
<0.2
<0.5
<0.26
<0.24
<0.22
<2
<0.29
<2
<2.3
<0.53 U
<0.44
<0.5
Jun-14
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0,5
<0.31
<0.33
<0.24
<2
<0,28
<2
<1
1.3
<0.33
<0,86
Dec-14
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
<0.24
<2
<0.28
<0.53
<1
<1 U
<0.33
<0.86
Jun-15
<10
NA
NA
<0,2
<1,2
<0.23
<0.2
<0.5
<0.3
<0.22
<0.2
<2
<0.2
<2
<1
1.5
<0.25
<0.51
Dec-15
<10
NA
NA
<0.2
<1.2
<0.20
<0.2
<0.5
<0.3
<0.22
<0.2
<2
<0.2
<2
<1
1.8
<0.25
<0.51
Jun-18
<10
NA
NA
<0.2
<2.8
<0.23
0.2 J
<0.63
<0.3
<0.31
<0.28
<2
<0,25
<2
<1,4
2.7
<0.31
<0,56
Dec-16
<10
NA
NA
<0.2
<2.8
<0.23
0.38 J
<0.83
<0.3
<0.31
0.31 J
<2
<0.25
<2
<1.4
4
<0.31
<0.56
Jun-17
<10
NA
NA
<0.31
<2
<0.53
<0,2
<0.8?
<0.3
<0.23
<0.31
<2
<0.38
<2
<1
4,8
<0,41
<0,72
Dec-17
<10
NA
NA
<0.31
<2
<0.53
0.45 J
<0.87
<0.3
<0.28
<0.31
<2
<0.38
<2
<1
4.2
<0.41
<0.72
Jun-18
<10
NA
NA
<0.31
<2
<0.53
0.43 J
<0.87
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
3.9
<0.41
<0.72
Dec-18
<10
NA
NA
<0.31
<2
<0.53
0.43 J
<0.87
<0.3
<0.28
<0.31
<2
<0.38
<2
<1
4.4
<0.41
<0.72
Jun-19
<10 UJ
NA
NA
<0.31 UJ
<2 UJ
<0.53 UJ
0,35 J
<0.87 UJ
<0.3 UJ
<0.20 UJ
<0.31 UJ
<2 UJ
<0.36 UJ
<2 UJ
<1 UJ
5.1 J
<0.41 UJ
<0.72 UJ
Dec-19
<10
NA
NA
<0.31
<2
<0.53
0,42 J
<0.87
<0.3
<0.28
<0.31
<2
<0.38
<2
<1
5.5
<0.41
<0.72
Jun-20
<10
NA
NA
<0,31
<2
<0.53
0.61 J
<0,87
<0.3
<0.28
0.35 J
<2
<0.38
<2
<1
9-2
<0.41
<0.72
Dec-20
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.87
<0.3
<0.28
<0,31
<2
<0.38
<2
<1
10
<0.41
<0.72
Jun-21
<10
NA
NA
<0.31
<2
<0.53
0.81 J
<0.87
<0.3
<0.28
<0.31
<2
<0.38
<2
<1
10.3
<0,41
<0.72
Dec-21
<10
NA
NA
<0.31
<2
<0.53
0.68 J
<0.87
<0.3
<0,28
<0.31
<2
<0.38
<2
<1
g.2
<0.41
<0.72
Jun-22
<10
NA
NA
<0.31
<2
<0.53
0.54 J
<0.87
<0.3
<0.28
<0.31
<2
<0.38
<2
<1
<12.3 U
<0.41
<0.72
H-30
-------
VOCs by EPA Method 8260 (jjg/L)
Well ID
Date
8
Acrolein
I
Si
I
I
1
1
II
J
1
I
Methylene
chloride
CN OS
I!
Toluene
!
1
Standard11,2,31
1400
13
0,0042
5
560
81
100
2100
B0
70
5
3.8
700
5
630
1,000
2
3,500
Oct-OO
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-O1
<20
<50
<50
<5.0
<10
<5,0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-02
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-03
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-03
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-03
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-06
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jul-06
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Nov-06
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
M ay-07
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Nov-07
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
May-08
<20
<50
<50
<5.0
<10
11
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Nov-0 8
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
M ay-09
<10
<100
<100
<1.0
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<2.0
<5.0
<1.0
<2.0
<2.0
Dec-OS
<10
<100
<100
<1.0
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<2.0
<5.0
<1.0
<2.0
<3.0
Jun-10
<20
NA
NA
<5.0
<10
<5 0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Dec-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5 0
<10
<5.0
<2.0
<5.0
Lw-e
Jun-11
<20
NA
NA
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Dec-11
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
May-12
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
Dec-12
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
Jun-13
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
Dec-13
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
<0.24
<2
<0.28
<2
<1
<0.2
<0.33
<0.66
Jun-14
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
<0.24
<2
<0 28
<2
<1
<0.2
<0.33
<0.66
Dec-14
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
<0.24
<2
<0.28
<0.53
<1
<0.2
<0.33
<0.66
Jun-15
<10
NA
NA
<0.2
<1.2
<0.29
0.3 J
<0.5
<0.3
<0.22
<0.2
<2
<0.2
<2
<1
4.4
<0.25
<0.51
Dec-15
<10
MA
NA
<0.2
<1.2
<0.29
0.44 J
<0.5
<0.3
<0.22
0.27 J
<2
<0.2
<2
<1
6
<0.25
<0.51
Jun-16
<10
NA
NA
<0.2
<2.6
<0.23
0.53 J
<0.63
<0.3
<0.31
0.29 J
<2
<0.25
<2
<1.4
7.5
<0.31
<0.56
Dec-18
<10
NA
NA
<0.2
<2.6
<0.23
0.38 J
<0.83
<0.3
<0.31
0.42 J
<2
<0.25
<2
<1 .4
5.7
<0.31
<0.56
Jun-17
<10
NA
NA
<0.31
<2
<0.53
0.52 J
<0.67
<0.3
<0.28
0.4 J
<2
<0.36
<2
<1
6.9
<0.41
<0.72
Dec-17
<10
NA
NA
<0.31
<2
<0.53
0.77 J
<0.67
<0.3
<0.28
0.38 J
<2
<0.36
<2
<1
10.8
<0.41
<0.72
Jun-18
<10
NA
NA
<0.31
<2
<0.53
1.2
<0.67 UJ
<0.3
<0.28
<0 31
<2
<0 36
<2
<1
16.3
<0.41
<0.72
Dec-18
<10
NA
NA
<0.31
<2
<0.53
1.5
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
22.6
<0.41
<0.72
Jun-19
<10 UJ
NA
NA
<0.31 UJ
<2 UJ
<0.53 UJ
1.5 J
<0.67 UJ
<0.3 UJ
<0.28 UJ
0.36 J
<2 UJ
<0.36 UJ
<2 UJ
<1 UJ
23.2 J
<0.41 UJ
<0.72 UJ
Dec-19
<10
NA
NA
<0.31
<2
<0.53
1.7
<0.67
<0.3
<0.28
<0,31
<2
<0.36
<2
<1
26.1
<0.41
<0.72
Jun-20
<10
NA
NA
<0.31
<2
<0.53
1.9
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
27.3
<0.41
<0.72
Dec-20
<10
NA
NA
<0.31
<2
<0.53
2.6
<0.67
<0.3
<0.28
<0.31
<2
<0 36
<2
<1
20
<0.41
<0.72
Jun-21
<10
NA
NA
<0.31
<2
<0.53
2.4
<0.67
<0.3
<0.28
0.33 J
<2
<0.36
<2
<1
12.5
<0.41
<0.72
Dec-21
<10
NA
NA
<0.31
<2
<0.53
1.9
<0.67 UJ
<0.3
<0.28
<0.31
<2
<0.36
<2.4 U
<1
5
<0.41
<0.72
Jun-2 2
<10
NA
NA
<0.31
<2
<0.53
2.4
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
<4.2 U
<0.41
<0.72
Jun-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Dec-20
<10
NA.
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
2.1
<0.31
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
LW-7
Jun-21
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
2.3
<0.31
<2
<0.36
<2
<1
<0.81 U
<0.41
<0.72
Dec-21
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
2.2
<0.31
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Jun-2 2
<10
NA
NA
<0.31
<2
<0.53
<0.2
1.6J +
<0 3
1.6
<0.31
<2
<0.36
<2
<1
<4.3 U
<0.41
<0.72
Ho I
-------
VOCs by EPA Method 8260 (jjg/L)
Well ID
Date
8
8
S
8
Acrolein
Benzene
2-Butanone
(MEK)
Carbon Disulfide
Chlorobenzene
Chloroethane
Chloroform
cis-1,2-
Dichloroethene
1,2-
~ichloroethane
1
s
I
Ethylbenzene
Methylene
chloride
>. o
S B
?§
Toluene
v'inyl chloride
Kylenes
Standard-1,2,33:
1400
13
0.0042
5
560
81
100
2100
80
70
5
3,8
700
5
630
1,000
2
3,500
Jun-10
<20
<50
<50
<5.0
14
<5.0
<5.0
<5.0
5.4
<5.0
220
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Dec-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
120
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Jun-11
<20
NA
NA
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
250
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Dec-11
<50.0
NA
NA
4,49
<50.0
<1.00
<1.00
<1.00
<1.00
1.05
369
<10.0
<1.00
<5.00
<10,0
3.56
<1,00
<3.00
May-12
<50.0
NA
NA
5.64
<50.0
<1,00
<1.00
<1.00
<1.00
1.20
405
<10.0
<1.00
<5.00
<10.0
3.88
<1.00
<3.00
Dec-12
<50.0
NA
NA
5.50
<50.0
<1.00
<1.00
<1.00
<1.00
1.45
481
<10.0
<1.00
<5.00
<10.0
4.12
<1.00
<3.00
Jun-13
<50.0
NA
NA
5,53
<50.0
<1.00
<1.00
<1.00
<1.00
1.20
441
<10.0
0.370 J
<5.00
<10.0
3.47
<1.00
1.51 J
Dec-13
<10
NA
NA
0.21 J
<3.1
<0.49
<0.2
<0.5
<0.26
<0.24
97.9
<2
<0.29
<2
<2.3
<0.2
<0.44
<0.5
Jun-14
<11
IMA
NA
0.31 J
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
129 J
<2
<0.28
<2
<1
<0.25 U
<0.33
<0.66
Dec-14
<11
NA
NA
0.24 J
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
79.4
<2
<0.28
<0.53
<1
<0.34 U
<0.33
<0.66
Jun-15
<10
NA
NA
5.2
<1.2
<0.29
<0.2
<0.5
<0.3
1.2
482
<2
0.62 J
<2
<1
3.5
<0.25
2.6 J
Dec-15
<50
NA
NA
3.9 J
<5.8
<1.5
<1
<2.5
<1.5
<1.1
458
<10
<1
<10
<5
3.1 J
<1.3
<2.6
LW-8
Jun-18
<50
NA
NA
4.7 J
<13
<1.2
<1
<3.1
<1.5
<1.6
489
<10
<1.3
<10
<7
3.3 J
<1.6
<2.8
Dec-16
<10
NA
NA
4.2
<2.6
<0.23
<0.2
<0.63
<0.3
0.76 J
442
<2
0.68 J
<2
<1.4
3.1
<0.31
2.1 J
Jun-17
<50
NA
NA
<1.6
<10
<2.7
<1
<3 3
<1.5
<1.4
586
<10
<1.8
<10
<5
2.4 J
<2
<3.6
Dec-17
<10
IMA
NA
2.3
<2
<0.53
<0.2
<0.67
<0.3
0.58 J
362
<2
0.49 J
<2
<1
1.6
<0.41
1.3 J
Jun-18
<10
NA
NA
4.4
<2
<0.53
<0.2
<0.67 UJ
<0.3
1.1
604
<2
0.87 J
<2
<1
2.3
<0.41
3.1
Dec-18
<100
NA
NA
<3.1
<20
<5.3
<2
<6.7
<3
<2.8
556
<20
<3.6
<20
<10
<3
<4.1
<7.2
Jun-19
<25
NA
NA
2.2 J
<5
<1.3
<0.5
<1.7
<0.75
<0.69
445
<5
<0.89
<5
<2.5
1.5 J
<1
2.1 J
Det-19
161 J
N.A
NA
<3.1
<20
<5.3
<2
<6.7
<3
<2.8
635
<20
<3.6
<20
<10
<3
<4,1
<7.2
Jun-20
<100
NA
NA
<3.1
<20
<5.3
<2
<6.7
<3
<2.8
543 J
<20
<3.6
<20
<10
<3
<4.1
<7.2
Dec-20
<100
NA
NA
<3.1
<20
<5.3
<2
<6.7
<3
<2.8
541
<20
<3.6
<20
<10
<3
<4.1
<7.2
Jun-21
<100
NA
NA
<3.1
<20
<5.3
<2
<6.7
<3
<2.8
525
<20
<3.6
<20
<10
<3
<4.1
<7.2
Dec-21
<20 UJ
NA
NA
<0.82 UJ
<4 UJ
<1.1 UJ
<0.4 UJ
<1.3 UJ
<0,8 UJ
<0.55 UJ
136 J
<4 UJ
<0.71 UJ
<4 UJ
<2 UJ
<0.8 UJ
<0.82 UJ
<1,4 UJ
Jun-22
<20
NA
NA
2.5
<4
<1.1
<0.4
<1.3
<0.6
<0.55
493 J
<4
0.73 J
<4
<2
<3.2 U
<0.82
3 J
Jun-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
8.6
<5.0
32
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Dec-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
25
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Jun-11
<20
NA
NA
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
58
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Dec-11
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
43.3
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
May-12
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
1.02
50.4
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
Dec-12
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
52.8
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
Jun-13
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
0.501 J
50.4
<10.0
<1.00
<5.00
<10.0
<1.00
<1.00
<3.00
Dec-13
<10
NA
NA
<0.21
<3.1
<0.49
<0.2
<0.5
<0.26
0.49 J
49.3
<2
<0.29
<2
<2.3
<0.2
<0.44
<0.5
LW-9
Jun-14
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
0.73 J
45.9
<2
<0.28
<2
<1
<0.32 U
<0.33
<0.66
Dec-14
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
0.47 J
32.8
<2
<0.28
<0.53
<0.26 U
<0.33
<0.66
Dec-18
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
2.7
44.5
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Jun-19
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
2.6
35.7
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Dec-19
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
2
27.4
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Jun-20
<10
NA
MA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
1.7
21.2
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Dec-20
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
1.4
14.1
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Jun-21
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
0.47 J
15.9
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Dec-21
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
12.3
<2
<0.38
<2
<1
<0.3
<0.41
<0.72
Jun-22
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
1.7
20 J+
<2
<0.36
<2
<1
<5.2 U
<0.41
<0.72
LW-10
Jun-22
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.87
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
<3.9 U
<0.41
<0.72
LW-11
Jun-22
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
3.5
<0.31
<2
<0.36
<2
<1
<1.2 U
<0.41
<0.72
LW-1 2
Jun-22
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
_ |
<0.28
<0.31
<2
<0.36
<2
<1
<2.4 U
<0.41
<0.72
LW-1 3
Jun-22
<10
NA
NA
3.5
<2
<0.53
<0.2
<0.67
<0.3
<0.28
246 J
<2
<0.36
<2
<1
<2.8 U
<0.41
<0.72
LW-14
Jun-22
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
5 '
<0.28
<0.31
<2
<0.36
<2
<1
<1.7 U
<0 41 UJ
<0.72
H-32
-------
VOCs by EPA Method 8260 (pg/L)
Well ID
Date
03
C
s
as
a
03
1
C
o
£Z
ju
O
b
Benzene
Qj
C
co w
Carbon Disulfide
Chlorobenzene
Chloroethane
Chloroform
O)
1
QJ
O
o
T— sz
(h .2
•o O
1,2-
Dichloroethane
2-Hexanone
Ethylbenzene
Methylene
chloride
4-M ethyl-2-
pentanone
Toluene
¦/iny! chloride
Xylenes
Standard'-1'2'3'1:
1400
13
0,0042
5
560
81
100
2100
80
70
5
a 5
700
5
$30
1,000
2
3,500
Dec-15
<10
NA
NA
2.7
<1.2
<0.67 U
0,32 J
<0.5
0.62 J
<0.22
33.3
<2
<0.2
<2
<1
8.2
<0.25
<0.51
Jun-16
<10 UJ
NA
NA
2.2 J
<2.6 UJ
<0.23 UJ
0,36 J
<0.63 UJ
<0.3 UJ
<0.31 UJ
25.4 J
<2 UJ
<0.25 UJ
<2 UJ
<1.4 UJ
7.8 J
<0.31 UJ
<0.56 UJ
Dec-16
<10
NA
NA
2.4
<2.8
<0.23
0.77 J
<0.83
<0.3
<0,31
23.1
<2
<0.25
<2
<1.4
23,7
<0.31
<0.56
Jun-17
<10 UJ
NA
NA
2.5 J
<2 UJ
<0.53 UJ
0.94 J
<0,87 UJ
<0.3 UJ
<0.28 UJ
25.3 J
<2 UJ
<0.38 UJ
<2 UJ
<1 UJ
22.5 J
<0,41 UJ
<0.72 UJ
Dec-17
<10
NA
NA
2.2
<2
<0.53
0.76 J
<0.87
<0,3
<0.28
22.4
<2
<0.38
<2
<1
19.1
<0.41
<0.72
Jun-18
<10
NA
NA
2.5
<2
<0.53
0.92 J
<0.87 UJ
<0,3
<0.28
25
<2
<0.38
<2
<1
19.7
<0.41
<0.72
LW14-10
De c-1B
<10
NA
NA
2.3
<2
<0.53
0.76 J
<0.87
<0.3
<0.28
24.1
<2
<0.38
<2
<1
17.2
<0.41
<0.72
Jun-19
<10
NA
NA
2.5
<2
<0.53
0.9 J
<0.87
<0.3
<0.28
22.7
<2
<0.38
<2
<1
18,5
<0.41
<0.72
Dec-19
<10 UJ
NA
NA
2.3 J
<2 UJ
<0,53 UJ
0,8 J
<0,87 UJ
<0.3 UJ
<0.28 UJ
24.3 J
<2 UJ
<0,38 UJ
<2 UJ
<1 UJ
18.2 J
<0.41 UJ
<0.72 UJ
Jun-20
<10
NA
NA
2.3
<2
<0.53
0,94 J
<0.87
<0.3
<0.28
26.7
<2
<0.38
<2
<1
22.8
<0.41
<0.72
Dec-20
<10
NA
NA
1,0
<2
<0.53
0,89 J
<0.87
<0.3
<0.28
24.3
<2
<0.38
<2
<1
22.2
<0.41
<0.72
Jun-21
<10 UJ
NA
NA
2.4
<2
<0.53
1
<0.87
<0.3
<0.28
23.7
<2
<0.38
<2
<1
17,5
<0.41
<0,72
Dec-21
<10
NA
NA
2
<2
<0.53
0,97 J
<0.87
<0.3
<0.28
22.4
<2
<0.38
<2.6 U
<1
11.8
<0.41
<0.72
Juri-22
<10
NA
NA
2.2
<2
<0.53
1
<0.87
<0.3
<0,28
21.1 J+
<2
<0.38
<2
<1
<10 U
<0.41
<0.72
Dec-15
<10 UJ
NA
NA
0.24 J
<1.2
<0.72 U
<0.2
<0.5
<0.3
<0.22
13.6
<2
<0.2
<2
<1
<0.4
<0.25
<0.51
Jun-16
<10
NA
NA
0,23 J
<2.8
<0.23
<0.2
<0.83
<0.3
<0.31
11
<2
<0,25
<2
<1,4
<0.2
<0.31
<0.56
Dec-16
<10
NA
NA
0.23 J
<2.6
<0.23
<0.2
<0.83
<0.3
<0.31
12.2
<2
<0.25
<2
<1.4
<0.2
<0.31
<0.56
Jun-1 7
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.87
<0.3
<0.28
10.2
<2
<0.38
<2
<1
<0.3
<0.41
<0.72
Dec-17
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.87
<0.3
<0.28
10
<2
<0.38
<2
<1
<0.3
<0.41
<0.72
Jun-1 B
<10
NA
NA
0.41 J
<2
<0.53
<0,2
<0.87 UJ
<0.3
<0.28
12.2
<2
<0,38
<2
<1
<0.3
<0.41
<0.72
LW14-11
De c-18
<10
NA
NA
<0.31
<2
<0,53
<0,2
<0.87
<0.3
<0.28
10.7
<2
<0.38
<2
<1
<0,3
<0,41
<0.72
Jun-19
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.87
<0.3
<0.28
8.4
<2
<0.38
<2
<1
<0.3
<0.41
<0.72
Dec-19
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.87
<0.3
<0.28
7.6
<2
<0.38
<2
<1
<0.3
<0.41
<0.72
Jun-20
<10
NA
NA
<0.31
<2
<0,53
<0,2
<0.87
<0.3
<0.28
10.4
<2
<0,38
<2
<1
<0.3
<0.41
<0.72
Dec-20
<10
NA
NA
<0.31
<2
<0,53
<0.2
<0.67
<0.3
<0.28
8.4
<2
<0.38
<2
<1
<0.3
<0.41
<0.72
Jun-21
<10 UJ
NA
NA
<0,31
<2
<0.53
<0.2
<0.87
<0.3
<0,28
7.9
<2
<0.38
<2
<1
<0.3
<0.41
<0.72
Dec-21
<10
NA
NA
<0.31
<2
<0.53
<0,2
<0.87
<0.3
<0.28
7.3
<2
<0.38
<2
<1
<0.3
<0.41
<0,72
Jun-22
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.87
<0.3
<0.28
5.0 J +
<2
<0.38
<2
<1
<8.4 U
<0.41
<0.72
Gct-00
<20
<50
<50
67
<10
<5.0
<5,0
<5.0
<5,0
<5.0
670
<5.0
<5.0
<5.0
<5.0
43.0
<2,0
8.8
Oct-01
<20
<50
<50
14
<10
<5.0
<5.0
<5.0
<5.0
<5.0
160
<5.0
<5.0
<5.0
<5.0
8.0
<2.0
<5 0
Oct-02
<20
<50
<50
6.5
<10
<5.0
<5.0
<5.0
<5,0
<5.0
80
<5.0
<5,0
<5.0
<5.0
5.3
<2.0
<5.0
Feb-03
<20
<50
<50
<5,0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
60
<5.0
<5,0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-03
<20
<50
<50
5.3
<10
<5.0
<5.0
<5,0
<5.0
<5.0
38
<5.0
<5,0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-03
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
47
<5.0
<5.0
<5.0
<5.0
<5,0
<2.0
<5.0
Feb-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
26
<5.0
<5,0
<5.0
<5.0
<5,0
<2.0
<5.0
Jun-04
<20
<50
<50
<5,0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
29
<5.0
<5.0
<5.0
<5.0
<5,0
<2.0
<5,0
MK-6
Oct-04
55
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
32
<5.0
<5.0
<5.0
<5.0
<5,0
<2.0
<5.0
Feb-05
55
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5,0
<5.0
26
<5.0
<5.0
<5.0
<5.0
<5,0
<2,0
<5.0
Jun-05
95
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
19
<5.0
<5.0
<5.0
<5.0
<5,0
<2.0
<5.0
Oct-05
130
<50
<50
<5.0
17,0
<5.0
<5.0
<5.0
<5.0
<5.0
16
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-06
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
24
<5.0
<5.0
<5.0
<5.0
8.8
<2.0
<5.0
Jui-06
Well Damaged
Nqv-06
Well Damaged
May-07
Well Damaged
Nov-07
Well Abandoned
H-33
-------
VOCs by EPA Method 8260 (pg/L)
Wei! ID
Date
c
o
s
:s
c
0
1
Acrolein
Benzene
QJ
C
O
¦§ ST
m w
Carbon Disulfide
Chlorobenzene
Chloroethane
Chloroform
ds-1,2-
Dichioroethene
1,2-
Dichiaroethane
2-Hexanone
c
H
C
e
&
Methylene
chloride
cn as
"5-. 1
f I
=¥ £
Toluene
vinyl chloride
Kylenes
S
andardc1,2,3);
1400
13
0,0042
5
560
St
100
2100
80
70
5
3,8
700
5
630
1,000
2
3,500
Oct-00
3,100
<50
<50
2,800
29
<5.0
<5.0
<5.0
<5.0
<5.0
1,500
<5.0
5,500
66
110
1,300
<2.0
18,000
Oct-01
1,400
<50
<50
1,200
<10
<5.0
<5.0
<5.0
<5.0
<5.0
1,500
<5.0
2,200
<5.0
<5.0
630
<2.0
5,800
Oct-02
900
<50
<50
390
<10
<5.0
<5.0
<5.0
<5.0
<5.0
870
<5.0
940
<5.0
<5.0
200
<2.0
3,300
Feb-03
510
<50
<50
420
<10
<5.0
<5.0
<5.0
<5.0
<5.0
870
<5.0
1,500
<5.0
<5.0
270
<2.0
2,200
Jun-03
<20
<50
<50
470
<10
<5.0
<5.0
<5.0
<5.0
<5.0
650
<5.0
2,400
<5.0
<5.0
350
<2.0
8,200
Oct-03
490
<50
<50
340
<10
<5.0
<5.0
<5.0
<5.0
<5.0
840
<5.0
1.600
<5.0
<5.0
220
<2.0
4,800
Feb-04
<20
<50
<50
140
<10
<5.0
<5.0
<5.0
<5.0
<5.0
260
<5.0
770
110
<5.0
<5.0
<2.0
2,500
Juri-04
370
<50
<50
140
<10
<5.0
<5.0
<5.0
<5.0
<5.0
560
<5.0
330
<5.0
<5.0
89
<2.0
1,000
MK-1 09
Oct-04
380
<50
<50
60
<10
<5.0
<5.0
<5.0
<5.0
<5.0
380
<5.0
280
<5.0
<5.0
<5.0
<2.0
1,000
Feb-05
410
<50
<50
180
150
<5.0
<5.0
<5.0
<5.0
<5.0
1,300
<5.0
280
<5.0
<5.0
77
<2.0
910
Jun-05
410
<50
<50
120
140
<5.0
<5.0
<5.0
<5.0
<5.0
740
<5.0
370
<5.0
<5.0
80
<2,0
1,200
Oct-05
750
<50
<50
300
<10
<5.0
<5.0
<5.0
<5.0
<5.0
1,400
<5.0
1,600
<5.0
<5.0
220
<2.0
5,300
Feb-QB
680
<500
<500
210
100
<50
<50
<50
<50
<50
1,200
<5.0
990
<50
<5,0
140
<2.0
3,400
Jul-08
<2,000
<5,000
<5,000
<500
<500
<500
<500
<500
<500
<500
1,300
<500
2,200
<500
<500
<500
<200
7.200
Nov-08
<2,000
<5,000
<5,000
<500
<1,000
<500
<500
<500
<500
<500
2,100
<1,000
3,200
<500
<1,000
<500
<200
11,000
May-07
340
<500
<500
190
<100
<50
<50
<50
<50
<50
1,900
<1 00
1,400
<50
<100
170
<20
4,600
Nov-07
Well Abandoned
Oct-00
190
<50
<50
320
18.0
<5.0
<5.0
<5.0
<5,0
<5.0
860
<5.0
82
<5.0
<5,0
220
<2.0
180
Oct-01
<20
<50
<50
160
<10
<5.0
<5.0
<5.0
<5.0
<5.0
340
<5.0
39
<5.0
<5.0
130
<2.0
68
Oct-02
<20
<50
<50
110
<10
<5.0
<5.0
<5.0
<5.0
<5.0
280
<5.0
30.0
<5.0
<5.0
110.0
<2.0
54.0
Feb-03
<20
<50
<50
120
<10
<5.0
<5.0
<5.0
<5.0
<5.0
330
<5.0
46
<5.0
<5.0
150
<2.0
81
Jun-03
<20
<50
<50
45
<10
<5.0
<5.0
<5.0
<5.0
<5.0
93
<5.0
19
<5.0
<5.0
44
<2.0
23
Oct-03
<20
<50
<50
67
<10
<5.0
<5.0
<5.0
<5.0
<5.0
190
<5.0
19
<5.0
<5.0
60
<2.0
23
Feb-04
<20
<50
<50
10
<10
<5.0
<5.0
<5.0
<5.0
<5.0
36
<5.0
7.9
<5.0
<5.0
16
<2.0
16
Jun-04
<20
<50
<50
33
<10
<5.0
<5.0
<5,0
<5.0
<5.0
71
<5,0
15
<5.0
<5.0
35
<2.0
27
MK-118
Oct-04
<20
<50
<50
8.3
<10
<5.0
<5.0
<5.0
<5.0
<5.0
89
<5.0
5.0
<5.0
<5.0
10
<2.0
7.3
Feb-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
79
<5.0
5.0
<5.0
<5.0
9
<2.0
10
Jun-05
<20
<50
<50
11
<10
<5.0
<5.0
<5.0
<5.0
<5.0
84
<5.0
7.5
<5.0
<5.0
16
<2.0
15
Oct-05
<20
<50
<50
11
<10
<5.0
<5.0
<5.0
<5.0
<5.0
63
<5.0
0.2
<5.0
<5.0
14
<2.0
15
Feb-OB
<20
<50
<50
7.6
<10
<5.0
<5.0
<5.0
<5.0
<5.0
200
<5.0
<5.0
<5.0
<5.0
8.3
<2.0
7
Jui-06
Weil Damaged
Nov-OB
Well Damaged
May-07
Well Damaged
Nov-07
Well Abandoned
Oct-OO
<20
<50
<50
30
<10
<5.0
<5.0
<5.0
<5,0
<5.0
19
<5,0
42.0
<5.0
<5.0
13
<2.0
75.0
Oct-01
<20
<50
<50
60
<10
<5.0
<5.0
<5.0
<5.0
<5.0
31
<5.0
59
<5.0
<5.0
20
<2.0
120
Oct-02
<20
<50
<50
16
<10
<5.0
<5.0
<5.0
<5.0
<5.0
9.1
<5.0
5.5
<5.0
<5.0
<5.0
<2.0
16
Feb-03
<20
<50
<50
14
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-03
<20
<50
<50
21
<10
<5.0
<5.0
<5.0
<5.0
<5.0
5.5
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-03
<20
<50
<50
20
<10
<511
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-04
<20
<50
<50
15
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-04
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
MK-1 20
Oct-04
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Feb-05
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Jun-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
5.6
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-06
<20
<50
<50
6.0
<10
<5.0
<5.0
<5,0
<5.0
<5.0
6.1
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jul-06
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Nov-OB
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
7.6
May-07
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Nov-07
Well Abandoned
H-34
-------
VOCs by EPA Method 8260 (|jg/L)
Well ID
Date
Acetone
1
o
s
=r
Acrolein
Benzene
ll
cn e-
Carbon Disulfide
Chiorobenzene
Chloroethane
Chloroform
. 1
o
— Z
A .y
D
1.2-
Dichforoethane
2-Hexanone
as
I
ffi
Methylene
chloride
2 c
>. o
f I
3 1
Toluene
v'inyl chloride
M
03
c
a>
>s
s
andard(1'2'3);
1400
13
0,0042
5
560
81
100
2700
80
70
5
3.8
700
5
630
1,000
2
3,500
Dec-15
<10
NA
NA
<0.2
<1.2
<0.63 U
<0.2
<0.5
<0.3
<0.22
<0.2
<2
<0.2
<2
<1
<0.4
<0.25
<0.51
Jun-1 B
<10
MA
NA
<0.2
<2.8
0.39 J
<0.2
<0.63
<0.3
<0.31
<0.28
<2
<0.25
<2
<1.4
<0.2
<0.31
<0.56
De c-18
<10
NA
NA
<0.2
<2.8
<0.23
<0.2
<0.63
<0.3
<0.31
<0.28
<2
<0.25
<2
<1.4
<0.2
<0.31
<0.58
Jun-1?
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
<0,31
<2
<0.36
<2
<1
<0.3
<0.41
<0,72
Dec-17
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Jun-1 B
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
MW14-01
Dec-18
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0,3
<0.28
<0.31
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Jun-1 9
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Dec-19
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Juri-20
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Dec-20
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<0.3
<0.41
<0.72
Jun-21
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Dec-21
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0,28
<0.31
<2
<0.36
<2
<1
<0.3
<0.41
<0.72
Jun-22
<10
NA
NA
0.64 J
<2
<0.53
<0.2
<0.67
<0.3
<0.28
<0.31
<2
<0.36
<2
<1
<3.3 U
<0.41
<0.72
Oec-15
<25
NA
NA
<0.5
<2.9
<1 U
<0.5
<1.3
<0.75
6.8
1.9 J
<5
272
<5
<2.5
3.2
<0.63
755
Jun-18
<50
NA
NA
<1
<13
<1.2
<1
<3.1
<1.5
<1.6
<1.4
<10
271 J
<10
<7
3.4 J
<1.6
678 J
Dec-18
19.9 J
NA
NA
0.85 J
<2.8
1.3 J
<0.2
<0.63
<0.3
3.9
3.2
<2
300
<2
<1.4
3,8
<0.31
825
Jun-1 7
18.1 J
NA
NA
0.7 J
3.3 J
<0.53
<0.2
<0.67
<0.3
3.6
2.6
<2
<0.36
<2
<1
3.1
<0.41
82.8
Dec-17
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.67
<0.3
<0.28
10
<2
0.6 J
<2
<1
<0.3
<0.41
1 J
Jun-18
<10
NA
NA
<0.31
<2
<0.53
0,33 J
<0.67 UJ
<0.3
0.31 J
<0.31
<2
1.5
<2
<1
0.38 J
<0.41
172
MW14-02
Dec-18
<20
NA
NA
<0.62
<4
<1.1
<0.4
<1.3
<0.6
1.3 J
<0.62
<4
332
<4
<2
2
<0.82
559
Jun-19
<50
NA
NA
<1.6
<10
<2.7
<1
<3.3
<1.5
2.8 J
<1.6
<10
640
<10
<5
23.1
<2
902
Dec-19
<50
NA
NA
<1.6
<10
<2.7
<1
<3 3
<1.5
<1.4
<1.8
<10
379
<10
<5
2.1 J
<2
474
Jun-20
<20
NA
NA
-------
VOCs by EPA Method 8260 (pg/L)
Date
I
!
Benzene
1
•8
£
w
Q
c
o
-e
P3
o
£
QJ
1
Chloroethane
1
1
c
cu
o
o
. E
ci s>
D
2-Hexanane
Methylene
chloride
CN 01
11
OJ
B
CO
ndard(1,2'3):
1400
13
0,0042
5
81
100
2100
80
70
5
3,8
700
5
830
1,000
2
3,500
Oct-00
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-01
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.Q
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5,0
Oct-02
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
11
<5,0
13.0
<5.0
<5.0
7.2
<2.0
36
Feb-03
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-03
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
12
<5.0
<5.0
5.5
<2.0
28
Oct-03
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Jun-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-04
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5,0
<5.0
<5.0
<2.0
<5.0
Feb-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5,0
<2.0
<5.0
Jun-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5,0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Oct-05
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5.0
Feb-06
<20
<50
<50
<5.0
<10
<5,0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5,0
<5.0
<5,0
<2.0
<5,0
Jul-08
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<2.0
<5,0
Nov-OB
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
M ay-07
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Nov-07
<20
<50
<50
<5.0
<10
9.1
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
M ay-08
<20
<50
<50
<5.0
<10
21
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
Nov-08
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
M ay-09
35
<100
<100
<1.0
<5.0
<5.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
36
<5.0
<1.0
<2.0
<2.0
Dec-09
31
<100
<100
<1.0
0.1
<5.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
62
<5.0
1.1
<2.0
<3.0
Jun-1 0
100
NA
NA
<5.0
11
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
81
<10
<5.0
<2.0
<5,0
Dec-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5,0
<10
<5,0
<2.0
<5,0
Jun-11
190
NA
NA
<5.0
18
<5.0
<5,0
<5.0
<5.0
<5.0
<5,0
<10
<5.0
110
<10
14
<2.0
<5,0
Dec-11
<50,0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1,00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10.0
8.71
<1.00
<3.00
May-12
<50.0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10.0
3.88
<1.00
<3.00
Dec-12
<50,0
NA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
<1.00
<10.0
<1.00
<5.00
<10.0
3.12
<1.00
<3,00
Jun-13
20.4 J
NA
NA
0.579 J
<50
0.259 J
1.84
<1.00
<1,00
0.352 J
<1.00
<10.0
<1.00
7.38
<10.0
10.8
<1.00
<3.00
Dec-13
<11 UJ
NA
NA
0.43 J
<1.5 UJ
<0.2 UJ
0.49 J
<0.5 UJ
<0.31 UJ
<0.33 UJ
0.57 J
<2 UJ
<0.28 UJ
<2 UJ
<1 UJ
<0.45 UJ
<0.33 UJ
<0.68 UJ
Jun-14
<11
NA
NA
0.4 J
<1.5
<0.2
0.59 J
<0.5
<0.31
<0.33
0.88 J
<2
<0.28
<2
<1
2
<0.33
<0.86
Dec-14
<11
NA
NA
0.41 J
<1.5
<0.2
0.53 J
<0.5
<0.31
<0.33
0.63 J
<2
<0.28
<0.53
<1
<3.3 U
<0.33
<0.86
Jun-1 5
<10
NA
NA
0.29 J
<1.2
<0.29
0.42 J
<0.5
<0.3
<0,22
0.81 J
<2
<0,2
<2
<1
1.4
<0.25
<0.51
Dec-15
<10
NA
NA
<0.2
<1.2
<0.28
1.8
<0.5
<0.3
<0.22
0.76 J
<2
<0,2
<2
<1
17.5
<0,25
<0.51
Jun-1 B
<10
NA
NA
0.52 J
<2.8
<0.23
2.6
<0.63
<0.3
<0.31
0,84 J
<2
<0.25
<2
<1.4
19.4
<0.31
<0,56
Dec-18
<10
NA
NA
0.45 J
<2.6
<0.23
2
<0.63
<0.3
<0.31
0.83 J
<2
<0.25
<2
<1.4
23.3
<0.31
<0.56
Jun-1 7
<10
NA
NA
0.38 J
<2
<0.53
1.8
<0.67
<0.3
<0,28
0,81 J
<2
<0.30
<2
<1
5.5
<0.41
<0,72
Dec-17
<10
NA
NA
<0.31
<2
<0.53
2.5
<0.67
<0.3
<0.28
0.74 J
<2
<0.38
<2
<1
21.3
<0.41
<0.72
Jun-1 e
<10
NA
NA
<0.31
<2
<0.53
3.1
<0.87
<0.3
<0.28
0.89 J
<2
<0.38
<2
<1
17
<0.41
<0,72
Dec-18
<10
NA
NA
<0.31
<2
<0.53
3.9
<0.67
<0.3
<0.28
0.84 J
<2
<0.38
<2
<1
38.4
<0.41
<0.72
Jun-1 9
<10
NA
NA
<0.31
<2
<0.53
2.8
<0.67
<0.3
<0.28
0.77 J
<2
<0.38
<2
<1
7,3
<0.41
<0.72
Dec-19
<10
NA
NA
<0.31
<2
<0.53
3.1
<0.67
<0.3
<0.28
0.84 J
<2
<0.38
<2
<1
17.8
<0.41
<0.72
Jun-20
<10
NA
NA
<0.31
<2
<0.53
3.5
<0.67
<0.3
<0.28
0.94 J
<2
<0.38
<2
<1
13.8
<0.41
<0.72
Dec-2Q
<10
NA
NA
<0.31
<2
<0.53
2.4
<0.67
<0.3
<0.28
0,78 J
<2
<0.38
<2
<1
7,5
<0.41
<0,72
Jun-21
<10
NA
NA
<0.31
<2
<0.53
2.7
<0.67
<0.3
<0.28
0.81 J
<2
<0.38
<2
<1
5.6
<0.41
<0.72
Dec-21
<10
NA
NA
<0.31
<2
<0.53
2
<0.67
<0.3
<0.26
0.74 J
<2
<0.38
<2
<1
3.9
<0.41
<0.72
Jun-22
<10
MA
NA
<0.31
<2
<0.53
1.7
<0.67
<0.3
<0.28
0.45 J+
<2
<0.38
<2
<1
<4.3 U
<0.41
<0.72
H-36
-------
VOCs by EPA Method 8260 (\iglL)
Wet I ID
Date
a>
I
O!
-------
VOCs by EPA Method 8260 (pg/L)
Weil ID
Date
I
s
1
b
Benzene
2-Butanone
¦MEK)
Carbon Disulfide
Chlorobenzene
Chloroethane
£
1
J
ds-1,2-
Dichloroethene
1,2-
Dichloroethane
2-Hexanone
1
Methylene
chloride
CN CP
"i. §
H 1
= §
Toluene
1
€
>
1
>.
Standard1-1,2'33:
1400
13
0,0042
5
560
81
100
2100
80
70
5
3,8
700
5
630
1,000
2
3,500
MW-37
Jun-10
<20
<50
<50
' <5.0
<10
<5.0
<5.0
<5.0
<5.0 '
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
MW-37A
Jun-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5.0
<10
<5.0
<2.0
<5.0
MVV-37B
Jun-10
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
-------
VOCs by EPA Method 8260 (fjg/L)
Weil !D
Date
1
3
n
Acrolein
Benzene
ii
Carbon Disulfide
Chlorobenzene
Chforoethane
Chloroform
cis-1,2-
Dichloroethene
1,2-
Dichloroethane
2-Hexanone
Ethylbenzene
Methylene
chloride
4-Methyi-2-
pentanone
Toluene
1
u
&
>
Kylenes
Standard^1,2'3*
1400
13
0.0042
5
560
81
100
2100
80
70
5
3.8
700
5
630
1,000
2
3,500
Jun-21
<10
NA
NA
<0.31
<2
<0.53
1.1
<0.67
<0.3
<0.28
0.52 J
<2
0.72 J
<2
<1
1.4
<0.41
2.3 J
MW-4B
Dec-21
<10
NA
NA
<0.31
<2
<0.53
<0.2
<0.87 UJ
<0.3
<0.28
0.91 J
<2
<0.3S
<2
<1
<0.3
<0.41
<0.72
(cont.)
Jun-22
<10 UJ
NA
NA
0.35 J
<2 UJ
<0.53 UJ
<0.2 UJ
<0.67 UJ
<0.3 UJ
<0.28 UJ
1.1 J
<2 UJ
<0.36 UJ
<2 UJ
<1 UJ
<1.7 U
<0.41 UJ
<0.72 UJ
Jun-22*
<25
NA
NA
<0.78
<5
<1.3
<0.5
<1.7
<0.75
<0.89
<0.78
<5
<0.89
<5 UJ
<2.5
<2 U
<1
<1.8
Oct-00
400
<50
<50
1,500
13
16
11
<5.0
<5.0
<5.0
12.000
<5.0
1.300
950
26
2,500
<2.0
3,700
Oct-01
890
<50
<50
570
<10
<5.0
8
<5.0
<5.0
<5.0
3,900
<5.0
1,600
140
93
1,700
3
3,900
Oct-02
1,500
<50
<50
270
<10
<5.0
<5.0
<5.0
<5.0
<5.0
1.200
<5.0
2.100
34
100
1,100
<2.0
5,900
Feb-03
360
<50
<50
120
<10
<5.0
<5.0
<5.0
<5 0
<5.0
600
<5.0
1,000
<5.0
54
680
<2.0
3,1 00
Jun-03
630
<50
<50
180
<10
<5.0
<5.0
<5.0
<5.0
<5.0
510
<5.0
2,000
<5.0
74
870
<2.0
5,400
Oct-03
400
<50
<50
180
<10
<5.0
<5.0
<5.0
<5.0
<5.0
660
<5.0
1,800
<5.0
76
800
<2.0
4,400
Feb-04
130
<50
<50
110
<10
42
<5.0
<5.0
<5.0
<5.0
360
<5.0
1,600
470
<5.0
<5.0
<2.0
4,900
Jun-04
120
<50
<50
270
<10
<5.0
<5.0
<5.0
<5.0
<5.0
370
<5.0
2,000
<5.0
<5.0
280
<2.0
5,600
Oct-04
160
<50
<50
160
<10
<5.0
<5.0
<5.0
<5.0
<5.0
320
<5.0
2,000
<5.0
<5.0
250
<2.0
5.500
Feb-05
130
<50
<50
55
<10
<5.0
<5.0
<5.0
<5.0
<5.0
100
<5.0
1,100
<5.0
<5.0
110
<2,0
3,200
Jun-05
120
<50
<50
95
<10
30
<5.0
<5.0
<5.0
<5.0
110
<5.0
910
<5.0
<5.0
<5.0
<2.0
2,800
Oct-05
140
<50
<50
110
<10
<5.0
<5 0
<5.0
<5.0
<5.0
160
<5.0
1,800
<5.0
<5.0
180
<2.0
5,300
Fefo-08
<100
<250
<250
<25
<50
<25
<25
<25
<25
<25
33
<5.0
710
<25
<5.0
54
<2.0
2,100
Jui-06
43
<50
<50
100
<10
<5.0
<5.0
<5.0
<5.0
<5.0
28
<5.0
520
<5.0
<5.0
220
<2.0
1,500
Nov-06
<20
<50
<50
<5.0
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<10
<5.0
<5,0
<10
<5.0
<2.0
<5.0
May-07
<100
<250
<250
36
<50
<25
<25
<25
<25
<25
28
<50
300
<25
<50
94
<10
880
Nov-07
<200
<500
<500
57
<100
<50
<50
<50
<50
<50
<50
<1 00
910
<50
<100
280
<20
2,800
May-08
<1,000
<2,500
<2,500
<250
<500
<250
<250
<250
<250
<250
300
<500
2,500
<250
<500
410
<100
7.100
Nov-08
<1,000
<2,500
<2,500
<250
<500
<250
<250
<250
<250
<250
390
<500
3,000
<250
<500
380
<100
8,300
M ay-09
<100
<1,000
<1,000
22
<50
<50
<10
<50
<10
<10
29
<50
800
<20
<50
130
<20
2,110
Dec-09
<10
<100
<100
8.3
<5.0
<1.0
<1.0
<5.0
<1.0
<1.0
13
<5.0
350
<2.0
<5.0
53
<2.0
850
Jun-1 0
<40
NA
NA
15
<10
<5,0
<5.0
<5.0
<5.0
<5.0
39
<10
490
<5.0
<10
46
<2.0
190
MW-48A
Dec-10
<200
<500
<500
<50
<100
<50
<50
<50
<50
<50
73
<100
620
<50
<100
52
<20
1,800
Jun-11
<200
NA
NA
<50
<100
<50
<50
<50
<50
<50
<50
<100
000
<50
<100
77
<20
1,900
Dec-11
<50,0
NA
NA
6.72
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
13.6
<10.0
ISO
<5.00
<10.0
64.7
<1.00
751
May-12
<50.0
IMA
NA
<1.00
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
6.54
<10.0
18.8
<5.00
<10.0
2.30
<1.00
117
Dec-12
<50.0
NA
NA
1.85
<50.0
<1.00
<1.00
<1.00
<1.00
<1.00
9.43
<10.0
51.2
<5.00
<10.0
9 52
<1.00
286
Jun-13
<50.0
NA
NA
<1.00
<50.0
0.308 J
<1.00
<1.00
<1.00
<1.00
2.42
<10.0
3.2
<5.00
<10.0
0.355 J
<1.00
12.8
Dec-13
<10
NA
NA
<0.21
<3.1
<0.48
<0.2
<0.5
<0.26
<0.24
1.8
<2
2.1
<2
<2.3
<0.4 U
<0.44
5.9
Jun-14
<11
NA
NA
0.42 J
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
3.4 J
<2
20.4
<2
<1
2.7
<0.33
85.7
Dec-14
<11
NA
NA
<0.24
<1.5
<0.2
<0.24
<0.5
<0.31
<0.33
1.1
<2
2.4
<0.53
<0.51 U
<0.33
8.6
Jun-15
<10
NA
NA
1.7
<1.2
<0.29
<0.2
<0.5
<0.3
<0.22
3,4
<2
11.4
<2
<1
1.7
<0.25
62.1
Jun-15*
<10
NA
NA
1.8
<1.2
<0.29
<0.2
<0.5
<0.3
<0.22
3.3
<2
11.3
<2
<1
1.6
<0.25
61.2
Dec-15
<10
NA
NA
40.3
<1.2
<0.29
<0.2
1.7 J
<0.3
1.9
174
<2
919
<2
<1
83.6
<0.25
2,880
Dec-15*
<10
NA
NA
38,9
<1.2
<0.29
<0.2
2.1
<0.3
2
140 J
<2
805 J
<2
<1
80.7
<0.25
2,440 J
Jun-18
<100
NA
NA
142
<28
<2.3
<2
10.8 J
<3
14.2
582
<20
4,800
<20
<14
263
<3.1
13,900
Jun-18*
<500
NA
NA
146
<130
<12
<10
<31
<15
<16
597
<1 00
4,730
<100
<70
273
<16
13.600
Dec-18
<100 UJ
NA
NA
58.2 J
<26 UJ
<2.3 UJ
<2 UJ
<6.3 UJ
<5.5 UJ
5.7 J
243 J
<20 UJ
2,100 J
<20 UJ
<14 UJ
108 J
<3.1 UJ
5,460 J
Dec-16s
<250 UJ
NA
NA
73.6 J
<64 UJ
<5 8 UJ
<5 UJ
<18 UJ
<7.5 UJ
<7.8 UJ
283 J
<50 UJ
1,890 J
108 J
<35 UJ
138 J
<7.9 UJ
4,740 J
Jun-1?
<250
NA
NA
114
<50
<13
<5
<17
<7.5
9.4 J
393
<50
4,260
<50
<25
222
<10
11,600
Jun-17*
<200
NA
NA
114
<40
<11
<4
<13
<8
9.9 J
403
<40
4,150
<40
<20
225
<8.2
11,200
Dec-17
<50
NA
NA
66,8
<10
<2.7
<1
6.6 J
<1.5
4.9 J
168
<10
1,780
<10
<5
131
2.7 J
4,210
Dec-17*
<50
NA
NA
61.3
<10
<2.7
<1
5.9 J
<1 5
4 J
156
<10
1,870
<10
<5
117
<2
4,750
Jun-18
<200
NA
NA
64.5
<40
<11
<4
<13
<8
<5.5
147
<40
2,540
<40
<20
147
<8.2
6,720
Jun-18*
<250
NA
NA
66.4
<50
<13
<5
<17
<7.5
<6.9
151
<50
2,460
<50
<25
152
<10
6,290
Dec-18
<50
NA
NA
15.3
<10
<2.7
<1
<3.3
<1.5
<1.4
46.1
<10
382
<10
<5
29.6
<2
947
H-39
-------
VOCs by EPA Method 8260 (pglL)
Well ID
Date
4J-
c
s
3>
i
sz
£
s
sz
$1
§
5
1
¦s
£
i
Q
c
1
O
l
.. £
1
a>
©
€
1
4!
5
Standard?*3*
mo
f3
0.0042
5
560
81
100
2 mo
11
3.$
700
s
&u
I i 00
2
3,500
Jun-19
NA
NA
54.9
<50
<13
<5
<17
¦r n
16®
<50
2,070
<50
<2Z
1*3
<10
6,640
Jun-19*
<250
NA
NA
54.4
<50
<13
<5
<17
162
<50
2,020
<50
<
1-9
<10
5,530
Dfr
*1R
NA
NA
6,1
<2
<0.53
<0.2
<0.8?
18,1
<2
70. B
<2
1
1 2
<0.41
179
1 H )
NA
NA
6.8
<2
<0 53
<0 2
<0.6?
17.3
<2
74.1
<2
< 1
i .2
<0 41
185
NA
NA
42-7
<50
-1?
<5
<17
69.4
<50
1,790
<50
U3
<10
5,460
MW-46A
(cont.)
i i I
NA
NA
43.9
<50
<5
<17
! "1
68.9
<50
1,930
<50
i"8
<10
5,870
Dt t I
NA
NA
30.7
<20 UJ
<2 UJ
<8.7 UJ
<
47.2
<20 UJ
m5
<20 UJ
114
^4I"
2.660
O
:ir i
NA
!MA
30.2
<40 UJ
<4 UJ
<13 UJ
,
44.®
<40 UJ
977
<40 UJ
105
2,940
1i f .1
NA
NA
2m 4
<40
<4
<13
25.8 J
<40
1.080 J
<40
,*- !i
2 1 sn
I'll
11
j in
NA
39.2
¦JC
.1
>
C
§9,6
•n
r0i
13 JJ
2r
1 2
-
:-,n
MW-47A
i 1
ib
NA
f ...
i j
c
3 J1
J .
! 1
1
U _l
-J2J
2
C 25
2
L
! _ '
0 ~h
MVV-47B
11 i
in
Nr-
N~
i j
c
J wJ
J _
1 :
i j
J . 1
- 3 2 J
o :g
2
0.22 J
! i
0 3t
11 i
<50
:n
" I
-:c
L I
_ |
_ 1
7
J
a
10
3 0
5 3
f
<0.24
1
! 1
<2
0.4? J
<2
i
i i
<11
NA
NA
I L -< >_¦
- : -
<0.24
1
1 1
<2
<0.28
<2
<1
1
i
I if, «
<11
NA
NA
<0.24
1 -
|i 1
<2
0.35 J
<0.63
1 h
-ii
III -
<10
NA
NA
0,20 J
i
1 -
' .
<2
0.2
<2
1 a
<0 25
[ IM -
<10
<10
NA
NA
NA
NA
0.42 J
0.41 J
: P
<1 29
<0 23
¦¦¦¦¦ i [
1 ¦
1 I
1 '
1 1 V.'
<2
0.21 J
0.31 j
<2
1 *
<0 25
<1 31
<0.51
<0.58
D i t
<10
NA
NA
0.39 J
: c
<1.23
1 i
1 '
<2
<0.25
<2
<
1 _
<0 3!
<0.58
MW-4S
l| ! |"
<10
NA
NA
<0.31
<0.53
i t
1 i
1 1
<2
<0.38
<2
r 1
<0.72
U f
<10
NA
NA
<0.31
<2
<0.53
...! i
1 ! "
j 1
<2
<0.36
<2
<0.41
i 1
<10
NA
NA
<0.31
<2
<0 53
1 h II
1
<2
<0.36
<2
i
<0.41
I lp>
<10
<10
NA
NA
NA
NA
<2
<0 53
<0 53
1 »
1 i
,
<2
<0.36
<0.36
<2
i
i
<041
<041
[In 1
<10
<10
NA
NA
NA
NA
<2
<2
<0 .S3
41.53
1 !
1 . ~
]
<2
<2
<0,36
<0.36
<2
1 1
<0.41
<0.41
D*t .1
i i
<10
<10
NA
NA
NA
HA
<0.31
<0 31
<2
<2
r >"
i i
,
<2
<0.36
<0.36
<2
<2
»¦ i
<0.41
<041
! ihi
<10
<10
NA
NA
NA
NA
<0 31
<0 31
<2
<2
i i
<2
<2
<0.36
<0.30
<2
, M 1
<041
<041
H-40
-------
VOCs by EPA Method 8260 ftiflll)
Well ID
D-'c
3
1
at
.§
I
s
1
iW
§
1
u ii-1
£
3
Q
1
c
1
1
s
1
£
P
w ....
at
c
0J
!
s
X
as
£
1
cn
*s
K
I
€
a>
£
ht-nn'-r 1
7400
13
QM042
5
'in
-
80
5
3,8
700
0-jV
i L I
3,500
MW-50
it '~
<10
NA
NA
v )
1 -
1
fi i
il
<0 31
<7
<0.36
<2
I 1
<0 41
<0.72
f lM
<10
NA
NA
i' 1
1
1
ii 'i
~ 11 H
i
I !
<2
<0 36
<2
-1
h '
<0.41
<0.72
1 < 1
<20
<50
<50
!
C |
- 1
- ii
-- 1!
- I
c |
<10
<5.0
<5.0
-'0
' .-c p
<2 0
-5 n
1 f
i t
<10
NA
NA
28
<2
<0 8?
<0 3
H „
<2
18
<2
<1
0.39 J
<0.4 1
5.5
it i 1
<10
NA
NA
2.7
<2
<0.8? UJ
<0.3
II
<2
2.2
<2
<1
0 4 2 J
<0.41
a.t
& 1 1
<10
NA
NA
3.8
<2
<0.S7
<0.3
j
<2
1,7
<2
<1
0.4 1 J
<0.4 1
7.8
11 L
<10
NA
NA
2 5
<2
<0 2
<0.67
<0.3
i _
<2
1.3
<2
-------
VOCs by EPA Method 8260 CpglL)
Weil ID
£U
S
1
i
J3
2
1 II
<1.00
24 9
<1.00
H
9 33
<1.00
<3.00
NA
NA
•
<1130
7 22 B
1!
*"!
<1
<1 00
<3.00
NA
NA
•
<0 5
<0 26
_
<;, ¦<
<0 44
<1 5
<11
NA
NA
•
<0.5
<0.31
<2
<1128
<2
< 1
2
<1.33
<0.60
<11
NA
NA
¦
<15
<0.31
<2
<0.28
<0.53
< 1
2
<0.33
<0.86
MW-52
Jun-15
<10
NA
NA
2.5
' 2
12 A
t
<2
1.8
57.5
< 1
3 J
<0.25
3.4
Deo-15
<10
NA
NA
2.7
¦¦¦ ; ¦'
14.7
<0.2
1i _
<2
2 2
150 J
*
J >1 J
<0.25
3.0
NA
NA
2 7
: r
18.8
<0.2
M -
<2
1.9
90,7
<
*1" \
«0.31
3.3
NA
NA
1 8 J
.Hi'
6.4 J
<
, - i1
<2 UJ
1 3 J
83.4 4
<1.
0 68 J
<0.31 UJ
2 2 J
NA
NA
2
3.8
<2
1,4
30,5
* 1
0 64 J
<0 41
2 7J
NA
NA
0.97 J
<7
1.5 J
<0.3
<2
O.SA.I
4.2 J
< 1
i ' 1
<0.41
1.4 J
<10
NA
NA
1 7
3 7
<0 3
<2
t.3
10.5
<}
! i 1
<0 41
2 2 J
<10
NA
NA
1.1
<2
2
<2
0.75 J
4.1 J
< 1
1 "tc |
<041
1.BJ
<10
NA
NA
I
<2
<0.2
<0.8?
<0.3
¦ -
<2
Q.75J
<2
«-]
1 '3 1
<0 41
1.3 J
<10
NA
NA
0.82 J
<2
<0.67
<0.3
<2
0.04 J
<2
'¦ 1
J.jJ
<0.41
1.1 J
<10
NA
NA
1 2
<2
<0.8?
<0.3
<2
0.89 J
<2
< 1
1 - !
<0 4!
1 2 J
<10
NA
NA
0 83 J
<2
<0.67
<0.3
<2
0.73 J
<2
< 1
1 J 1
<0 41
<0.72
<10
NA
NA
1 1
<2
<0.87
<0 3
0.81 J
<2
< 1
1 ~ i
<041
10
<10
NA
NA
1.2
<2
<0.67
<0:3
<2
0.67 J
<2
r 1
i: i
<0.41
0.i4 J
<10
NA
NA
2.1
<2
0.64 J
<0.87
<0.3
<2
1.2
<2
«¦ 1
¦ i1
<0 41 UJ
1.2 J
H-42
-------
VOCs by EPA Method 8260 (pg/L)
Weil ID
Date
I
V
!
1
It
Carbon Disulfide
1
I
1
cis-1,2-
Dichloroethene
2-Hexanone
s
1
Methylene
chloride
CN su
11
II
Toluene
I
I
S
andard(1'2,3);
1400
73
0,0042
5
87
100
2700
80
5
3,8
700
5
630
1,000
2
3,500
Nov-0?
<2,000
<5,000
<5,000
<500
<1,000
<500
<500
<500
<500
<500
<500
<1,000
10,000
<500
<1,000
670
<200
28,000
May-08
<4,000
<10,000
<10,000
<1,000
<2,000
<1,000
<1,000
<1,000
<1,000
<1,000
<1,000
<2,000
11,000
<1,000
<2,000
<1,000
<400
31,000
Nov-OB
<2,000
<5,000
<5,000
<500
<1,000
<500
<500
<500
<500
<500
<500
<1,000
10,000
<500
<1,000
640
<200
29,000
May-09
<400
<4,000
<4,000
280
<200
<200
<40
<200
<40
<40
60
<200
13,000
<80
<200
700
<80
31,690
Dec-09
<1,000
IMA
NA
290
<500
<250
<250
<250
<250
<250
<250
<500
10,000
<250
<500
670
<100
25,000
Dec-10
<2,000
<5,000
<5,000
<500
<1,000
<500
<500
<500
<500
<500
<500
<1,000
9,400
<500
<1,000
690
<200
27,000
Jun-11
<2,000
NA
NA
<500
<1,000
<500
<500
<500
<500
<500
<500
<1,000
10,000
<500
<1,000
790
<200
27.000
Jun-11
<4,000
NA
NA
<1,000
<2,000
<1,000
<1,000
<1,000
<1,000
<1,000
<1,000
<2,000
10,000
<1,000
<2,000
<1,000
<400
29.000
Dec-11 *
<2,500
NA
NA
206
<2,500
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<500
9,660
<250
<500
658
<50.0
25.200
May-12*
<500
NA
NA
194
<500
<10.0
<10.0
<10.0
<10.0
<10.0
28.1
<100
10,600
<50.0
<100
601
<10.0
28,400
Dec-12 *
<1B0Q
NA
NA
160
<1000
<20,0
<20.0
<20.0
<20.0
<20.0
31.8
<200
10,500
<100
<200
554
<20.0
27.300
Jun-13
53.0 J
NA
NA
145
<500
3.15 J
<10.0
<10.0
4.59 J B
<10.0
28,4
<100
10,400
3.98 J
<100
544
<10
10,100
Dec-13
<1000
NA
NA
54.1 J
<310
<49
<20
<50
<26
<24
<22
<200
6,590
<200
<230
302
<44
19,100
Dec-13
<1000
NA
NA
51.7 J
<310
<49
<20
<50
<26
<24
<22
<200
6,130
<200
<230
277
<44
17,700
Dec-14
<530
NA
NA
22.9 J
<74
40 J
<12
<25
<18
<16
19.8 J
<100
3,920 J
<27
<50
180
<18
9,250 J
Jun-15
<600
NA
NA
46.1 J
<58
<15
<10
<25
<15
<11
<10
<100
7,400
<100
<50
283
<13
20.300
Jun-1 5"
<1000
NA
NA
49.5 J
<120
<29
<20
<50
<30
<22
<20
<200
8,980
<200
<100
271
<25
19,200
Dec-15
<500
NA
NA
41.9 J
<58
<15
<10
<25
<15
<11
16.1 J
<100
7,620
<100
<50
275
<13
21,500
Dec-15s
<500
NA
NA
41.3 J
<58
<15
<10
<25
<15
<11
11.7 J
<100
7,640
<100
<50
288
<13
21.700
Jun-18
<1000
NA
NA
22.7 J
<260 UJ
<23
<20
<63
<30
<31
<28
<200
4940
<200
<140
134
<31
14400
Jun-16*
<500
NA
NA
23.2 J
<130 UJ
<12
<10
<31
<15
<16
<14
<100
4890
<100
<70
133
<18
13800
Dec-16
<1000UJ
NA
NA
22.4 J
<260 UJ
<23 UJ
<20 UJ
<03 UJ
<30 UJ
<31 UJ
<28 UJ
<200 UJ
5,410 J
<200 UJ
<140 UJ
130 J
<31 UJ
14,500 J
MW-53
Dec-18*
<1000UJ
NA
NA
26.9 J
<260 UJ
<23 UJ
<20 UJ
<63 UJ
<31 ,B UJ
<31 UJ
<28 UJ
<200 UJ
5,610 J
<200 UJ
<140 UJ
15B J
<31 UJ
15,000 J
Jun-1 7
<500
NA
NA
<1 B
<100
<27
<10
<33
<15
<14
<18
<100
3,360
<100
<50
84
<20
6.150
Jun-1 7*
<500
NA
NA
18.5 J
<100
<27
<10
<33
<15
<14
<18
<100
3,380
<100
<50
87.3
<20
9.220
Dec-17
<250
NA
NA
11.4 J
<50
<13
<5
<17
<7.5
<8.9
<7.8
<50
2,610
<50
<25
65.1
<10
7,010
Dec-17 *
<250
NA
NA
11.5 J
<50
<13
<5
<17
<7.5
<8.9
<7/8
<50
2,430
<50
<25
85
<10
6.380
Jun-18
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
2,810
<100
<50
74.3
<20
7.390
Jun-1 6B
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
2,780
<100
<50
72.3
<20
7,290
Dec-18
<500
NA
NA
<1 B
<100
<27
<10
<33
<15
<14
<18
<100
3,890
<100
<50
108
<20
10,300
Dec-18*
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<16
<100
3,880
<100
<50
99.6
<20
10,200
Jun-19
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
4,210
<100
<50
105
<20
11,400
Jun-18*
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
4,150
<100
<50
108
<20
11,300
Dec-19
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
3,100
<100
<50
67.9
<20
8.420
Dec-19s
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
3,090
<100
<50
67.1
<20
8,420
Jun-20
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<16
<100
3,120 J
<100
<50
61.9
<20
9.360 J
Jun-20*
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
3,030 J
<100
<50
59
<20
9,100 J
Dec-20
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
2,330
<100
<50
49.9 J
<20
7,420
Dec-20*
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
2,340
<100
<50
46.9 J
<20
7.460
Jun-21
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
2,060
<100
<50
<49.7 U
<20
6.000
Jun-21*
<500
NA
NA
<16
<100
<27
<10
<33
<15
<14
<18
<100
2,050
<100
<50
53.2
<20
5,860
Dec-21
<250
NA
NA
<7.8
<50
<13
<5
<17
<7.5
<8.9
<7.8
<50
1,660
<50
<25
31.8
<10
4.900
Dec-21*
<250
NA
NA
<7.0
<50
<13
<5
<17
<7.5
<6.9
<7.8
<50
1,530
<50
<25
30
<10
4,530
Jun-22
<250
NA
NA
14.3 J
<50
<13
<5
<17
<7.5
<8.9
<7,8
<50
1,860 J
<50 UJ
<25
55.8 J
<10
5,430 J
Jun-22*
<250
NA
NA
18.9 J
<50
<13
<5
<17
<7.5
<8.9
<7.8
<50
1,880 J
<50 UJ
<25
80.5 J
<10
5 .400 J
H-43
-------
VOCs by EPA Method 8280 (pg/L)
ii, 1
<1.00
<1,00
0 270 J
<5.00
<5.00
<5.00
10.4
!0.3
781
<3.00
<3 00
0 387 J
1 ipi
NA
MA
i .
<0 5
II!)
<2
<0.29
<2
<0.2
O 5
I i 1
<11
NA
NA
<1.5
<0.5
1711
<2
<0.20
<2
38
<0.86
D i
<11
NA
NA
<1.5
1.3
<0 5
J L J J
<2
0.30 J
<0.53
<0.2
<0.86
MW-54
Ll
<10
NA
NA
<1.2
<0 29
1.2
<0 5
<0,3
0 01 1
<2
<0 2
<2
<1
2.4
£0.25
<0.5!
En i "
<10
MA
MA
<1.2
<3.29
1.1
<0.5
<0.3
j ::
0 C2 J
<2
0,32 J
<2
<1
3.3
<0.25
<0.51
if r
<10
NA
NA
<2.6
1.5
<0.63
<0.3
0 05 J
<2
0.39 J
<2
<1.4
<0.31
<0.56
1 IM i
<10
NA
MA
<2.6
1.4
<0.3
IM 1
<2
0,39 J
<2
<1.4
<0.31
<0.50
11
<10
NA
NA
t 6
<0 3
<2
<0 36
<2
<1
iN | 1
<041
<0 72
' IF!
<10
NA
NA
<2
1.5
<0.3
<2
<0.36
<2
<1
1 2
<041
<0.72
! f >-
<10
NA
NA
<2
1.8
<0 3
<2
<0 36
<1
<1
0 71 J
<0.41
<0.72
Lit r !
<10
NA
NA
<2
1.5
<0.3
<2
0.39 J
<2
<1
1 1
<0.41
<0.72
L r
<10
NA
HA
<2
1.4
<0,3
<2
0.3HJ
<2
<1
0:2 I
<0.41
<0.72
C* 1 «
<10
NA
NA
<2
1.4
<0.3
<2
<0.30
<2
<1
rr ! I
<0.41
<0.72
1
<10
NA
NA
<2
1 3
<0 3
<2
<0.36
<2
<1
11 11 I
<0.41
<0.72
f thl 1
<10
NA
MA
<2
i.5
<1)3
<2
<0.3B
<2
<1
1 1
<041
<0.77,
u 1
<10
NA
NA
<2
<0.53
1.4
<0.3
<2
<0.36
<2
<1
! «.
<0.41
<0.72
pM - ]
<10
NA
NA
<2
<0.53
1.4
<0,3
<2
<0.36
<2
<1
0 0 1 1
<0.41
<0.72
11 II
<10
NA
NA
<0.31
<2
<0.53
0.98 J
<0.3
<2
<0,36
<2
<1
" 5
<0.41
<0,72
H-44
-------
VOCs by EPA Method 8260 £pg#L)
Well ID
D~'r
?
I
;
l.
1
i
]
1
1
|
©
c
1
rSi 2
1
X
I
c
,¦ ¦ c
. -
^ «
q.
a>
1
£
is
s
1
L ti ii ¦">!
j ij
1 . i y
8?
100
2 WO
IL!
, 1
700
5
-
1,000
2
3,500
MW-55
tic I
rh t'
Nr i1
M i, i"
Du ! '
Jjn ?lJ "
Dec-10
Oec-10*
jisrvl 1
Dec-11
jun- i o
Dec-16
JurM?
Dec-17
Jun»18
Deo IB
Jun-13
Dec-13
Jun-20
Deo20
Jun-21
Dec-21
Jurv22
! n
Ui
1 ii
imi
<1Q
<20
<20
<20
<20
<10
<11
<10
<10
<10
<10
<10
<10
<10
<10
<10
<10
<10
<10
<10
<10
<10
I I ill
-¦ I hi I
MA
NA
<50
<50
MA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA.
NA
NA
NA
NA
NA
NA
NA
NA
in 11
IMI
1 1 JO
1 r it
-m&U
NA
MA
<50
<50
NA
NA
NA
NA
MA
NA
NA
NA
MA
NA
NA
HA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
"-""rrrH
<100
<100
«t D
,
L J
III
ll 1
11
V
-L
<10
<10
!i
-F 1 II
-> 1II
1 H
S 1 1!
j J II
- . 1
h
<2
<2
<2
<2
<2
<2
*=2
<2
<2
<2
<2
•=100
<100
<100
<50
<5.0
<5.0
<5.0
<5.0
<5 0
-------
voc
& by EPA M
ethod 8260
M0A-)
Wei! ID
I
s
1
1
as
SU
&
I
£
§*
iui
¦s
1
o
1
r
I
i
o
q»
1
as
1
I
1
£
5
35
5
(Si
I
s
h 'c
z -
2 €
r-'s r,
T £
ai
e
I
¦s
I
-5
:
m
CO
s
"
«¦?¦» in
7400
?3
i i J
5
560
81
100
2 tOO
80
-
3,8
TOO
5
1 i 03
2
3,500
<50
~ !
<511
<10
<5.0
<5 0
<5 0
<5 0
<2
<0.30
<2
<1
<0 41
<0.72
PZ-01
<10
<10
NA
NA
<0 31
<0.31
<2
<0 53
<0.53
V : I
I ) '/
t 1
<0.3
<2
<0.36
<0.36
<2
<2
<1
<0.72
<0.72
<10
NA
<0.31
<2
<0.53
<0 2
[ u~
<0.3
"
<2
<0.3B
<2
<1
"
<0.72
<10
NA
<0.31
<2
<0,53
<0.2
<0.3
<2
<0.30
<2
<1
.
<072
<10
NA
<0.31
<2
<0.53
<0.2
<0.3
<2
<0.36
<2
c: 1
<072
<10
NA
<131
<2
O 53
c0 2
<0.3
<2
<0.30
<2
<1
<0.72
<10
NA
<0.31
1
O .S3
<0 2
<
<0.3
<2
<0.36
<2.6 U
<1
<0.41
<072
<10
NA
i!
s'0.31
J
<0.53
-------
VOCs by EPA Method 8260 ML.)
Well iD
D^p
Of
1
&
B
sr
s
s
c
M
8
i
©
£
M
s
I 1
M
C
n t
r I ¦*—
¦8
m
3
Q
c
1
B
d.i
|
1
o
*5
c
at
1
e
1
g
£
§
w
1
If
S 'fa
UJ
c
s
n
¦s
1
€
t
1
>.
X
t
-1 it -i i
1400
•
i i ^
a
at
100
z'too
SO
5
3,8
TOO
5
$30
1 1 "J
2
3.500
Mm -
<10
NA
M 1
0.29
<0 2
l
<2
<0.41
<0.72
PZ-03
Dl L
<10
NA
o;
' z
J _J
i;
-3 2
«0.3
j
17
-2
¦-3 2
-2
1
i -
<0.25
<0.5!
Dm "
<10
MA
r
n _
I _ i
i _
<0.5
<0.3
ii
I _
<2
<0.2
<2
<1
L *
<0.25
<0.51
<10
NA
r -
it
<0 .23
::..ri' r??_
<0.3
<0.28
<2
<0.25
<2
<1,4
<0.3!
en
-------
1 M> L ~ i - M i t is 11, hi is it-* ! hi i H ie ji i i, in i n'[i- els (MCLs), which are avaisa
— -r]iii I i —tun, i - t-u if i l -)[ - i-itirnatecf
Data collected prior to December 2013 is from previous consultants
Bold indicates result is greater than the applicable standard or cleanup goat are bold.
t*F - h i . i i m -water-ani^dnnkirig-water/natiorial-prirrary-drmking-vvater-reguiatians
is ii i-ftir i j - r.tr i ^ ites", effective November 2020. For non-carcmogen compounds (n), the EPA RSL has been multiplied by a
3 Record of Decision (ROD), which for these
2013 five Year Review Report (USEPA,
H-48
-------
Table H-2: PFAS Analytical Results, November 202025
Location:
EX-05
LW-3
LW-8
LW-9
MW14-03
MW-46A
EB-01
TB-01
Sample Date:
11/17/2020
11/17/2020
11118/2020
11/17/2020
11/1712020
11/17/2020
11/17/2020
-
PFAS .{EPA 537 Modified by Isotope Dilution)
Perfluorobutanoic acid
0.0527
0.0293
0.0085 J
<0.0042
0.0191
0.170
<0.0038
<0.0038
Perfluoropentanoic acid
0.214
0.103
0.0148 U
0.0032 U
0.0302
0,560
<0,0019
0,0019 J
Perfluorohexanoic acid
0.215
0.140
0 0429
0.0096 U
0.0966
0.763
<0.0019
0.0028 J
Perfluoroheptanoic acid
0.0741
0,0453
0.0078
<0.0021
0.0293
0.430
<0.0019
<0,0019
Perfluorooctanoic acid
0.124
0.0615
0.0396
0.0111
0.244
1.14
<0.0019
<0,0019
Perfluorobutanesulfonic acid
0.0551
0.0739
0.0295
0,0062
0.0572
0,387
<0.0019
<0,0019
Perfluoropentanesulfonic acid
0.0530
0.0694
0.0290
0.0047
0.0719
0.272
<0.0019
<0,0019
Perfluorohexanesutfonic acid
0.288
0.407
0.192
0,0571
0.421
2.15
<0.0019
<0.0019
Perfluoroheptanesulfonic acid
0.0083
0.0094
0.0076
<0.0021
<0,0019
0.0242
<0.0019
<0,0019
Perfluorooctanesulfonic acid
0,0535
0.0697
0.101
0.0039 J
<0.0019
0.596
<0.0019
<0,0019
6:2 Fluorotelomer sulfonate
0.197
0.0900
<0.0045
<0.0042
<0,0038
0.416
<0.0038
<0,0038
Notes:
1 1: USEPA, PFOA & PFOS Drinking Water Health Advisories Fact Sheet, May 2018,
< #: Not detected at the specified detection limit
EB: Equipment blank
J: Estimated value
PFAS: Per- and Polyfluoroalkyl substances
PFOA: Perfluorooctanoic acid
PFOS: Perfluorooctanesulfonic acid
TB: Trip blank
U: Not present above the associated level; blank contamination exists
USEPA: United States Environmental Protection Agency
This table presents the results for all PFAS detected during the November 2020 groundwater monitoring event. Sample results have been have been validated by AECOM using a
procedure that was modeled after the Data Review and Validation Guidelines for Perfluoroalkyl Substances (PFASs) Analyzed Using EPA Method 537 (USEPA, November 2018).
AH sample results reported in micrograms per liter (|jg/L).
25 Tabic B-l of June 2022 Semi-Annual Groundwater Monitoring Report, AECOM.
H-49
-------
Table H-3: PFAS Analytical Results, December 20212<> 27
Location;
USEPA
Provisional
Health
Advisory
LW-1
LW-4
LW-5
LW-6
LW-10
LW-11
MW-37
MW-37A
MW-37B
Field Sample ID:
LW-1
LW-4
LW-5
LW-6
LW-10
LW-11
MW-37
MW-37A
MW-37B
Lab Sample ID:
FA91393-15
FA91537-9A
FA91537-5A
FA91393-11A
FA81393-8A
FA91537-3A
FA91393-13
FA91393-7
FA91393-9
Sample Date:
12/7/2021
12/9/2021
12/9/2021
12/7/2021
12/7/2021
12/9/2021
12/7/2021
12/7/2021
12/7/2021
PFAS (EPA 537 Modified by Isotope Dilution)
4:2 Fluorotelomer sulfonate
NP
0.0102 J
<0.0042
<0.0042
<0.004
<0.004
<0.0042
<0.004
<0.004
<0.004
6:2 Fluorotelomer sulfonate
NP
0.254
0.237
0.0472
<0.004
<0.004
0.049
<0,004
<0.004
<0.004
8:2 Fluorotelomer sulfonate
NP
<0.004
<0.0042
0,0102 J
<0.004
<0.004
<0.0042
<0.004
<0,004
<0.004
EtFOSAA
NP
<0.004
<0,0042
<0.0042
<0.004
<0.004
<0.0042
<0.004
<0,004
<0.004
MeFOSAA
NP
<0.004
<0.0042
<0.0042
<0.004
<0.004
<0.0042
<0.004
<0,004
<0.004
Perfluorobutanesulfonic acid
NP
0.282
0.041
0.0321
0.0405
<0.002
0.0083
0.004
<0,002
0.0046
Perfluorobutanoic acid
NP
0.0659
0.0219
0.0159
0.0116
<0.004
<0.0042
<0.004
<0.004
0.0049 J
Perfluorodecanesulfonic acid
NP
<0.002
<0.0021
<0,0021
<0.002
<0.002
<0.0021
<0.002
<0.002
<0.002
Perfluorodecanoic acid
NP
<0.002
<0.0021
<0.0021
<0.002
<0.002
<0.0021
<0.002
<0.002
<0.002
Perfluorododecanotc acid
NP
<0.002
<0.0021
<0.0021
<0.002
<0.002
<0.0021
<0.002
<0.002
<0.002
Perfluoroheptanesulfonic acid
NP
0.0488
0.0152
0.0094
0.0099
<0.002
0.0044
<0.002
<0.002
<0.002
Perfluoroheptanoic acid
NP
0.119
0.0387
0.0254
0.0169
<0,002
0.0065
<0.002
<0.002
0.0049
Perfluorohexanesulfonic acid
NP
1.43
0.355
0.195
0.285
<0.002
0,0714
0.0185
<0.002
0.133
Perfluorohexanoic acid
NP
0.381
0.111
0.0533
0.0773
0.005
0.02
<0.002
<0.002
0.0074
Perfluorononanesutfonic acid
NP
<0.002
<0.0021
<0.0021
<0.002
<0.002
<0.0021
<0.002
<0.002
<0.002
Perfluorononanoic acid
NP
<0.002
<0.0021
<0.0021
<0.002
<0.002
<0.0021
<0.002
<0,002
<0.002
Perfluorooctanesulf on amide
NP
<0.004
<0.0042
<0.0042
<0.004
<0.004
<0.0042
<0.004
<0 004
<0.004
Perfluorooctanesulfonic acid (PFC
0.070
0.452
0.0388
0.305
0.0499
<0.002
0.177
<0.002
<0,002
<0.002
Perfluorooctanoic acid (PFOA)
0.070
0.134
0.246
—grj
0.191
<0.002
0.0087
<0.002
<0,002
0.0052
Perfluoropentanesulfonic acid
NP
0.283
0.0546
0.0257
0.0443
<0.002
0.0104
0.0042
<0.002
0.0077
Perfluoropentandc acid
NP
0.249
0.0645
0.0405
0.0249
0.0058
0.0135
<0.002
<0.002
0.0055
Perfluorotetradecanoic acid
NP
<0.002
<0.0021
<0.0021
<0.002
<0,002
<0.0021
<0.002
<0.002
<0.002
Perfluorotridecanoic acid
NP
<0.002
<0.0021
<0.0021
<0.002
<0,002
<0.0021
<0.002
<0,002
<0.002
Perfluoroundecandc acid
NP
<0.002
<0.0021
<0,0021
<0.002
<0.002
<0.0021
<0.002
<0.002
<0.002
26 * ^ rTV:l- ^ . .f t.. \ r,,.. ...i .O-. :.s-\ f, .I... T?. .^ f
^ I!'•». s. > 3:. |V-.. :t'» .* U !\'"!!" •s,." :'S,.P" 11111 i !(,?"• s ¦¦%'» I' *S!.% s f-!sss: !'!0 i 5'.*v* S,..V1 5! 5 v' s i| . j" !\ !\-l \.OsM!".'!s i!--s.'s's . Ij'h s" S:; o ® S::: V" il-.'.'lsl: si"s,-,;r''|sJS
H-50
-------
Location:
USEPA
Provisional
Health
Advisory
MW-38A
MW-41
MW-41A
MW-42
MW-42A
MW-43
MW-43A
Field Blank
Field Blank
Field Sample ID:
MW-38A
DUP-03
MW-41
MW-41A
MW-42
MW-42A
MW-43
MW-43A
FB-01
FIELD BLANK
Lab Sample ID:
FA91581-5
FA91581-8
FA91393-5
FAS1393-18
FAS1393-10
FA91393-12
FA91393-4
FA91393-6
FA91581-1
FA91393-17
Sample Date:
12/10/2021
12/10/2021
12/7/2021
12/7/2021
12/7/2021
12/7/2021
12/7/2021
12/7/2021
12/10/2021
12/7/2021
DUP2
FB
FB
PFAS (EPA 537 Modified by Isotope Dilution)
4:2 Fiuorotelomer sulfonate
__| <0.0042
<0.0042
<0.004
<0.0042
<0.004
<0.004
<0.004
<0,004
<0.0042
<0,004
6:2 Fiuorotelomer sulfonate
NP <0.0042
<0.0042
<0.004
<0.0042
<0.004
<0.004
0.0108 J
0.0288
<0.0042
<0,004
8:2 Fiuorotelomer sulfonate
NP <0.0042
<0.0042
<0.004
<0.0042
<0,004
<0.004
<0.004
<0.004
<0.0042
<0.004
EtFOSAA
NP <0.0042
<0.0042
<0.004
<0.0042
<0.004
<0.004
<0.004
<0.004
<0.0042
<0,004
MeFOSAA
NP <0.0042
<0.0042
<0.004
<0.0042
<0.004
<0.004
<0.004
<0.004
<0.0042
<0.004
Perfluorobutanesulfonic acid
NP 0.0031 J
0.0032 J
<0.002
<0.0021
<0.002
0,008
0.049
0.0583
<0.0021
<0,002
Perfluorobutandc acid
NP <0.0042
<0.0042
<0.004
<0.0042
<0.004
0.012
0.0199
0.0319
<0.0042
<0.004
P erf 1 u orod ecan esu If on ic acid
NP <0.0021
<0.0021
<0.002
<0.0021 UJ
<0.002
<0.002
<0.002
<0.002
<0.0021
<0,002
Perfluorodecanoic acid
NP <0.0021
<0.0021
<0.002
<0.0021
<0.002
<0.002
<0,002
<0,002
<0.0021
<0.002
Perfluorododecanoic acid
NP <0.0021
<0,0021
<0.002
<0.0021
<0.002
<0,002
<0.002
<0,002
<0.0021
<0,002
Perfluofoheptanesulfonic acid
NP <0.0021
<0.0021
<0.002
<0.0021
<0,002
<0.002
0,0061
0.0122
<0.0021
<0.002
Perfluoroheptanoic acid
NP <0.0021
<0.0021
<0.002
<0.0021
<0.002
0.011
0.0235
0.0447
<0.0021
0
Perfluorohexanesulfonic acid
NP 0.0342
0.0319
<0.002
<0.0021
0.0038 J
0,0326
0,246
0,452
<0.0021
<0,002
Perfluorohexanoic acid
NP <0.0021
<0.0021
<0.002
<0.0021
<0,002
0,0269
0.102
0.145
<0.0021
<0.002
Perfluorononartesulfonic acid
NP <0.0021
<0.0021
<0,002
<0.0021
<0.002
<0.002
<0.002
<0,002
<0.0021
<0,002
Perfluorononanoic acid
NP <0.0021
<0.0021
<0,002
<0.0021
<0.002
<0.002
'0.002
<0,002
<0.0021
<0,002
Perfluorooctanesulfon amide
NP <0.0042
<0.0042
<0,004
<0.0042
<0.004
<0.004
; 0.004
< 0.004
<0 0042
<0.004
Perfluorooctanesulfonic acid (PFC
0.070 <0.0021
<0.0021
<0.002
<0.0021
<0.002
0,0075
0.0914
0.182
<6.0021
<0,002
Perfluorooctanoic acid (PFOA)
0.070 <0.0021
<0.0021
<0.002
<0.0021
<0.002
0.0155
0,0933
0,139
<0.0021
<0.002
Perfluoropentanesulfonic acid
NP 0.0026 J
0.0029 J
<0.002
<0.0021
<0.002
0,0075
0.0472
0.0631
<0.0021
<0,002
Perfluoropentanoic acid
NP <0.0021
<0.0021
<0.002
<0.0021
<0.002
0,0335
0,0626
0.119
<0.0021
<0.002
P erf 1 u oro tetrad ecan a c acid
NP <0.0021
<0.0021
<0.002
<0.0021
<0.002
<0.002
<0.002
<0,002
<0.0021
<0.002
Perfluorotridecandc acid
NP <0.0021
<0.0021
<0,002
<0.0021 UJ
<0.002
<0.002
<0.002
<0,002
<0.0021
<0.002
Perfluoroundecandc acid
NP <0.0021
<0.0021
<0.002
<0.0021
<0.002
<0.002
<0.002
<0,002
<0.0021
<0.002
Hoi
-------
Notes:
1: USEPA, PFOA & PFOS Drinking Water Health Advisories Fact Sheet, November 2016.
2: Field duplicate of MW-38A
< #: Not detected at the specified detection limit
EtFOSAA: n-Ethyl perfluorooctanesulfonamidoacetic acid
FB: Field blank
J: Estimated value
MeFOSAA: n-Methyl perfluorooctanesulfonamidoacetc acid
NP: Not proposed
PFAS: Per- and Polyfluoroalkyl substances
PFOA: Perfluorooctanoic acid
PFOS: Perfluorooctanesulfonic acid
UJ: Not detected and the limit is estimated
USEPA: United States Environmental Protection Agency
This table presents the results for all PFAS during the December 2021 groundwater monitoring event Sample results have been have been validated by AECOM using a procedure
that was modeled after the Data Review and Validation Guidelines for Petfiuoroaikyi Substances (PFASs) Analyzed Using EPA Method 537 (USEPA, November 2018), All
sample results reported in micrograms per liter (pg/L).
Detected sample concentrations are bold. Sample concentrations that are greater than the criteria are indicated by a highlighed cell.
H-52
-------
Table H-4: PFAS Analytical Results, June 202228 29
Location:
USEPA
Provisional
Health
Advisory
MW-38
MW-38
MW-38 B
Field Blank
Field Sample ID:
MW-38
DUP-03
MW-38B
FB01
Lab Sample ID:
FA96736-4
FA96736-5
FA96736-2
FA96736-3
Sample Date:
6/21/2022
6/21/2022
6/20/2022
6/21/2022
DUP2
FB
PhAS (EPA 537 Modified by isotope Dilution)
4:2 Fluorotelomer sulfonate
NP
<0.004
<0.004
<0.004
<0.004
8:2 Fluorotelomer sulfonate
NP
<0.004
<0.004
<0.004
<0.004
8:2 Fluorotelomer sulfonate
NP
<0.004
<0.004
<0.004
<0.004
EtFOSAA
NP
<0.004
<0.004
<0.004
<0.004
MeFOSAA
NP
<0.004
<0.004
<0.004
<0.004
Perfluorobutanesulfonic acid
NP
0.0049
0.0047
0.0068
<0.002
Perfluorobutanoic acid
NP
<0.004
<0.004
<0.004
<0.004
Perfluorodecanesulfonic acid
NP
<0.002
<0.002
<0.002
<0.002
Perfluorodecanoic acid
NP
<0.002
<0.002
<0.002
<0.002
Perfluorododecanoic acid
NP
<0.002
<0.002
<0.002
<0.002
Perfluoroheptanesulfonlc acid
NP
<0.002
<0.002
<0.002
<0.002
Perfluoroheptanoic acid
NP
<0.002
<0.002
<0.002
<0.002
Perfluorohexanesulfonic acid
NP
0 0709
0 07
0.0578
<0.002
Perfluorohexanoic acid
NP
<0.002
<0.002
<0.002
<0.002
Perfluorononanesulfonic acid
NP
<0.002
<0.002
<0.002
<0.002
Perfluorononanoic acid
NP
<0.002
<0.002
<0.002
<0.002
Perfluorooctanesulfonamide
NP
<0.004
<0.004
<0.004
<0.004
Perfluorooctanesulfonic acid
0.070
<0.002
<0.002
0.0561
<0.002
Perfluorooctanoic acid
0.070
<0.002
<0.002
<0.002
<0.002
Perfluoropentanesulfonic acid
NP
0.0054
0.0054
0.0053
<0.002
Perfluoropentanoic acid
NP
<0.002
<0 002
<0.002
<0.002
Perfluorotetradecanoic acid
NP
<0.002
<0.002
<0.01
<0.002
Perfluorotridecanoic acid
NP
<0.002
<0 002
<0.002
<0.002
Perfluoroundecanoic acid
NP
<0.002
<0.002
<0.002
<0.002
28 Tabic 5 of June 2022 Semi-Annual Groundwater Monitoring Report, AECOM.
29 Results are compared to 2016 lifetime health advisories. See the Data Review Section of this FYR for comparison to updated 2022 lifetime health advisories.
H-53
-------
Notes:
1: USEPA, PFOA & PFOS Drinking Water Health Advisories Fact Sheet, May 2016.
2: Field duplicate of MW-38
< #: Not detected at the specified detection limit
EtFQSAA: n-Ethyl perfluorooctanesulfonamidoacetic acid
FB: Field blank
MeFOSAA: n-Methyl perfluorooctanesulfonamidoacetic acid
N P: Not proposed
PFAS: Per- and Polyfluoroalkyl substances
PFOA: Perfluorooctanoic acid
PFOS: Perfluorooctanesulfonic acid
USEPA: United States Environmental Protection Agency
This table presents the results for all PFAS during the June 2022 groundwater monitoring event. Sample results have been have been validated by AECOM using a procedure that
was modeled after the Data Review and Validation Guidelines for PerfluoroalkylSubstances (PFASs) Analyzed Using EPA Method 537 (USEPA, November 2018), All sample
results reported in micrograms per liter (pg/L).
Detected sample concentrations are bold. Sample concentrations that are greater than the criteria are indicated by a highlighed cell.
H-54
-------
Table H-5: PFAS Data Summary from June 2021 Private Wells Sampling Report30
Table 4 - PFAS Data Summary
Kalama Specialty Chemicals Site
Sample Dates 06/22/2021 - 06/23/2021
Analyte
USEPA
Drinking Water
Health Advisories
Units
Field Blank
49 SHANKLfN RD #1
69 PEBBLE RD
FB01
PW05
PW03
6:2FTS
NA
ng/L
9.4 U
49
36
PFBS
NA
ng/L
8.8 U
8.1 NJ.QC-ZQ-2
11
PFHpA
NA
ng/L
9.9 U
4.8 J.Q-2
4.7 J,Q-2
PFHxA
NA
ng/L
20 U
19 J.Q-2
18 J.Q-2
PFHxS
NA
ng/L
9.0 U
69
82
PFPeA
NA
ng/L
9.9 U
11
14
PFPeS
NA
ng/L
9.3 U
10
7.7 J.Q-2
PFOA
70 ng/L for combined
PFOA & PFOS
ng/L
9.9 U
8.0 J,Q-2
13
PFOS
70 ng/L for combined
PFOA & PFOS
ng/L
9.2 U
140
100
PFOA + PFOS
70 ng/L for combined
PFOA & PFOS
ng/L
148 J
113
NA - Not Available
Data Qualifiers
U - The analyte was not detected at or above the reporting limit.
J - The identification of the analyte is acceptable; the reported value is an estimate.
Q-2 - Result greater than MDL but less than MRL.
QC-7 - The relative intensities and/or ratios of the characteristic ions do not agree with the relative
intensities/ratios of the ions in the reference spectrum.
1 |ig/L = 1,000 nanograms per liter (ng/L)
6:2 FTS = Fluorotelomer sulfonate 6:2
PFHpA = Perfluoroheptanoic acid
PFHxA = Perfluorohexanoic acid,
PFHxS = Perfluorohexanesulfonate
PFPeA = Perfluoropentanoic acid
PFPeS = Perfluoropentanesulfonate
311 Source: Private Wells Sampling Investigation Report, Kalama Specialty Chemicals Site, 3090 Trask Parkway, Beaufort, South Carolina. EPA Region 4 Laboratory
Services and Applied Science Division. August 4, 2021.
H-5 5
-------
APPENDIX I- DETAILED GROUNDWATER ARARS REVIEW TABLE
CERCLA Section 12 l(d)( 1) requires that Superfund remedial actions attain "a degree of cleanup of
hazardous substance, pollutants, and contaminants released into the environment and control of further
release at a minimum which assures protection of human health and the environment." The remedial
action must achieve a level of cleanup that at least attains those requirements that are legally applicable
or relevant and appropriate. In performing the FYR for compliance with ARARs, only those ARARs
that address the protectiveness of the remedy are reviewed.
The 1993 ROD identified federal MCLs as well as South Carolina's primary drinking water regulations
MCLs as ARARs for groundwater at the Site. Groundwater ARARs and current standards are listed in
Table 1-1. There have been no changes to the federal or state standards since the 1993 ROD. The ROD
did not list any chemical-specific ARARs for soil and sediment.
Table I-1: ARAR Review for Groundwater
Groundwater COC
ARARs Listed in
Current Standards (ji|*/L)
Change
1993 ROD (fi«/L);'
EPA MCLb
SC MCLC
Benzene
5
5
5
No change
Ethvlbcnzcnc
700
700
700
No change
Xylenes
10,000
10,000
10,000
No change
1,2-DCA
5
5
5
No change
Methylene chloride
5
5
5
No change
1.1-DCE
7
7
7
No change
Notes:
a. Source: Tabic 7-2 in the Site's 1993 ROD.
b. National Primary Drinking Water Standards located here: httds://www.eDa.gov/ground-water-arid-drinking-
water/national-Drimarv-drinking-water-regulation-table (accessed 9/21/22).
c. From South Carolina primary water quality standards, available at:
lttlDs://scdliec.gov/sites/default/files/Librarv/Regulations/R.61 -68.Ddf (accessed 9/29/2022).
Hg/L = micrograms per liter
1-1
-------
APPENDIX J - SCREENING-LEVEL RISK REVIEW
This FYR conducted a screening-level risk evaluation of the soil and sediment COC cleanup goals by
comparing the cleanup goals to the EPA's residential and industrial soil RSLs (Tables J-l and J-2).
Under a residential land use scenario, the chromium cleanup goal exceeds the upper bound of the EPA's
risk management range of 1 x 10"6 to 1 x 10"4 for hexavalent chromium; however, this screening is
conservative for several reasons. It is unknown if chromium at the Site is in the trivalent or hexavalent
form. It is unlikely that all chromium present is in the more toxic hexavalent form; chromium in the
environment is typically in the trivalent form unless plating or leather tanning occurred on-site. In
addition, the hexavalent chromium carcinogenic RSL uses California EPA's carcinogenic toxicity value,
as the EPA has not yet determined that hexavalent chromium is carcinogenic through the oral route of
exposure. The lead cleanup goal also exceeds the residential lead RSL; however, residential use is not a
current or anticipated land use at the Site. To ensure long-term protectiveness, institutional controls
restricting residential land use were implemented in 2019. The cleanup goals for all contaminants
remain valid for industrial use (Table J-2).
Table J-l: Residential Screening-Level Risk Review of Soil Cleanup Goals
Soil and Sediment
COC
ROD
Residential RSL' (mg/kg)
Carcinogenic
Riskh
Noncarcinogenic
HQ'
Cleanup Goal
(mg/kj;)
1 \ 10*
Risk
HQ= 1.0
Benzene
ND (0.005)
1.2
82
4 x 10"9
0.00006
Toluene
4
—
4,900
—
0.0008
Ethylbcnzcnc
7
5.8
2,400
1 x 10"6
0.003
Xylenes
60
—
580
—
0.1
1,2-DCA
ND (0.005)
0.46
31
1 x 10"8
0.0002
Methylene chloride
ND (0.005)
57
350
9x 1011
0.00001
Vinyl chloride
ND (0.01)
0.059
60
2 x 10"7
0.0002
1,1-DCE
0.023
—
230
-
0.0001
Benzoic acid
25,000
—
250,000
-
0.1
Antimony
3
—
31
-
0.1
Trivalent chromium
40
—
120,000
—
0.0003
Hexavalent chromium
0.3
230
1 x 10 4
0.2
Lead
500
400d
—
Nickel
140
15,000
1,500
9 x 10"9
0.09
Mercury
2
—
11
—
0.2
Notes:
a. Current EPA RSLs arc available at httDs://www.eDa.gov/risk/regional-screening-levels-rsls-generic-tables
(accessed 12/09/2022). Nickel (soluble salts) and elemental mercury RSLs used.
b. The carcinogenic risks were calculated using the following equation, as RSLs arc derived based on 1 x 10~6 risk:
Carcinogenic risk = (cleanup goal ^ carcinogenic-based RSL) x 10"6.
c. The noncarcinogenic HQ was calculated using the following equation: HQ = cleanup goal ^ noncarcinogcnic-
bascd RSL.
d. The EPA has not developed carcinogenic or noncarcinogenic-based toxicity values for lead and evaluates lead
exposure using blood-lead modeling. The cleanup goal is compared directly to the blood-lead based RSL.
— = no RSL available/unable to calculate risk.
ND = calculated value below respective method detection limit. The 1993 ROD stated that non-detect results
obtained from validated contract protocol would serve as the cleanup goal. The values in parentheses arc the lowest
non-detect concentrations from Table 4-9 of the Site's 1990 Rl Report.
Bold = noncarcinogenic HQ exceeds 1.0 or carcinogenic risk exceeds 1 x 10~4.
mg/kg = milligrams per kilogram
K-l
-------
Table J-2: Industrial Screening-Level Risk Review of Soil Cleanup Goals
Soil and Sediment
COC
ROD
Industrial RSL' (mg/kg)
Carcinogenic
Risk1*
Noncarcinogenic
HQ1' '
Cleanup Goal
(m«/k«)
1 \ HI"6
Risk
HQ = 1.0
Benzene
ND (0.005)
5.1
420
1 x 10-"
0.00001
Toluene
4
—
47,000
—
0.00009
Ethylbcnzcnc
7
25
17,000
3 x 10"7
0.0004
Xylenes
60
—
2,500
—
0.02
1.2-DC A
ND (0.005)
2.0
140
3 x 10"9
0.00004
Methylene chloride
ND (0.005)
1,000
3,200
5 x 10"12
0.000002
Vinyl chloride
ND (0.01)
1.7
310
6 x 10"9
0.00003
1.1-DCE
0.023
—
1,000
-
0.00002
Benzoic acid
25,000
—
3,300,000
-
0.008
Antimony
3
—
470
-
0.006
Trivalcnt chromium
40
—
1,800,000
—
0.00002
Hcxavalcnt chromium
6.3
3,500
6 x 10"6
0.01
Lead
500
800d
—
Nickel
140
64,000
22,000
2 x 10"9
0.006
Mercury
2
—
46
—
0.04
Notes:
a. Current EPA RSLs arc available at httDs://www.eDa.gov/risk/regional-screening-levels-rsls-generic-tables
(accessed 12/09/2022). Nickel (soluble salts) and elemental mercury RSLs used.
b. The carcinogenic risks were calculated using the following equation, as RSLs arc derived based on 1 x 10~6
risk: Carcinogenic risk = (cleanup goal ^ carcinogenic-based RSL) x 10"6.
c. The noncarcinogenic HQ was calculated using the following equation: HQ = cleanup goal ^
noncarcinogenic-based RSL.
d. The EPA has not developed carcinogenic or noncarcinogenic-based toxicity values for lead and evaluates
lead exposure using blood-lead modeling. The cleanup goal is compared directly to the blood-lead based
RSL.
- = no RSL available/unable to calculate risk.
ND = calculated value below respective method detection limit. The 1993 ROD stated that non-detect results
obtained from validated contract protocol would serve as the cleanup goal. The values in parentheses arc the
lowest non-detect concentrations from Table 4-9 of the Site's 1990 Rl Report.
Bold = noncarcinogenic HQ exceeds 1.0 or carcinogenic risk exceeds 1 x 10~4.
mg/kg = milligrams per kilogram
Vapor Intrusion
Due to the presence of VOCs in groundwater, this FYR evaluated the potential for vapor intrusion to
indoor air using the EPA's V1SL calculator. The VISL calculator is an empirical model that predicts
indoor air concentrations from groundwater concentrations using conservative "generic" attenuation
factors and current toxicity information. These factors reflect worst-case conditions and do not consider
any site-specific conditions such as site soil strata, depth to water table or building properties that may
reduce the transport of vapors from groundwater through the soil column.
Groundwater data from this FYR period were used to evaluate the potential risk of vapor intrusion if the
Site were to be developed. Currently, the only building on the property is the groundwater treatment
facility. To provide a conservative vapor intrusion evaluation, the maximum-detected COC
concentrations from the monitoring wells in the surficial aquifer were entered into the EPA's V1SL
calculator. The surficial aquifer is used because this contamination would be closest to the foundation of
a future building. Because institutional controls are in place that restrict residential land use, only
commercial use was evaluated.
K-2
-------
As shown in Table J-3, the noncancer hazard quotient (HQ) is above the EPA threshold of 1 based on
commercial use for xylenes and carcinogenic risk for ethylbenzene exceeds EPA's risk management
range of 1 x 10"4 to
1 x 10"6. This finding suggests that the vapor intrusion pathway should be assessed fully, using multiple
lines of evidence, if construction of an enclosed structure is proposed near this area of the Site.
The groundwater delineation investigation confirmed that the 1,2-DCA plume extends off the KSCI
property. Vapor intrusion risk will be evaluated for off-property parcels impacted by groundwater
contamination.
Table J-3: Industrial Vapor Intrusion Evaluation of Groundwater Data, 2018 to 2022
coc
Maximum Surficial
Aquifer Concentration,
2018 to 2022 (|iig/L):'
EPA VISL Calculator'11
Commercial Use
Carcinogenic
Risk
Noncancer
HQ
Benzene
112 (MW-56. 2022)
2 x 10-'
0.2
Ethvlbcn/cnc
4,210 (MW-53, 2019)
3 x 10 4
0.3
1,2-DCA
166 (MW-46A, 2019)
2 x 10"5
0.3
1.1-DCE
ND
—
—
Methylene chloride
10.5 (MW-52, 2018)
1 x 10"9
0.0005
Xylenes
11,400 (MW-53, 2019)
—
7
Notes:
a. Source: Appendix B of the June 2022 Semi-Annual Groundwater Monitoring
Report. AECOM.
b. The EPA's VISL calculator, accessed 2/1/2023 at
ht:tDs://www.era.eov/vaDoriritmsion/vaDor-iritrasiori-screenirig-level-calailator.
c. Calculation assumes average groundwater temperature of 25°C.
Bold values denote exceedance of a 1 x 10~4 cancer risk or a noncancer HQ of 1.
- = cancer risk/HQ could not be calculated because toxicity values are not
established, or constituent was not detected.
ND = Not Detected
Hg/L = micrograms per liter
In 2019, AECOM performed a limited human health risk assessment regarding 1,2-DCA and cis-1,2-
DCE in well CW-3 at Thomas Concrete. The evaluation was conservative because the well is in the
bedrock aquifer and there is no evidence of 1,2-DCA or other VOCs in the shallow aquifer in this
location. The assessment determined that there was no unacceptable risk to workers through the vapor
intrusion pathway. This analysis used the highest detections of 1,2-DCA and cis-1,2-dichloroethylene at
the time. However, in June 2022, 1,2-DCA was slightly higher and therefore, this FYR Report repeated
this screening level risk evaluation with the higher concentration. As shown in Table J-4, carcinogenic
risk is within the EPA's risk management range and the noncancer HQ is less than 1.
Table J-4: Industrial Vapor Intrusion Evaluation of 1,2-DCA at Well CW-3
Maximum 1,2-DCA
Concentration in CW-3,
2018 to 2022 (jig/L):l
EPA VISL Calculator"1
Commercial Use
Carcinogenic Risk
Noncancer HQ
12.8 J (June 2022)
1 x 10""
0.02
K-3
-------
Notes:
a. Source: Appendix B of the June 2022 Sciiii-Aiinual Groundwater
Monitoring Report. AECOM.
b. The EPA's VISL calculator, accessed 2/1/2023 at
https://www.epa.gov/vaporintnision/vapor-intnision-screening-level-
calculator.
c. Calculation assumes average groundwater temperature of 25°C.
Hg/L = micrograms per liter
J = Estimated value
PI-AS
This FYR additionally conducted a screening-level risk evaluation of the PFAS concentrations in
groundwater by comparing the maximum detections in the 2020, 2021 and 2022 sampling events to the
EPA's tap water RSLs (Table J-5). Perfluorohexanesulfonic acid, PFOS and PFOA all exceeded EPA's
noncancer HQ of 1. PFOA concentration fell within EPA's cancer risk management range of 1 x 10"4 to
1 x 10"6. The EPA will be evaluating remedial alternatives for addressing PFAS contamination.
Table J-5: Screening-Level Risk Review of Maximum Concentration of PFAS Constituents
PFAS Constituent
Maximum
Detection'
(mjx/L)
Tap Water RSLb (jii*»/L)
Carcinogenic
Risk'
Noncarcinogcnic
HQ'1
1 \ 10"6
Risk
HQ = 1.0
Perfluorobutanesulfonic acid
0.387
—
6
—
0.06
Perfluorohexanesulfonic acid
2.15
—
0.39
—
6
Perfluorononanoic acid
ND
—
0.059
—
—
PFOS
0.596
—
0.04
—
15
PFOA
1.14
1.1
0.06
1 x 10"6
19
Notes:
a. Data source: Table 5 and Tables B-l and 5 in Appendix B of the June 2022 Sciiii-Aiinual Groundwater
Monitoring Report. AECOM.
b. Current EPA RSLs are available at https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables
(accessed 12/09/2022).
c. The carcinogenic risks were calculated using the following equation, as RSLs are derived based on 1 x 10-6
risk: Carcinogenic risk = (cleanup goal ^ carcinogenic-based RSL) x 10-6.
d. The noncarcinogcnic HQ was calculated using the following equation: HQ = cleanup goal
noncarcinogcnic-bascd RSL.
Bold values denote cxcccdance of a 1 x 10-4 cancer risk or a noncancer HQ of 1.
- = cancer risk/HQ could not be calculated because toxicity values are not established, or constituent was not
detected.
ND = Not Detected
Hg/L = niicrogranis per liter
K-4
-------
APPENDIX K- 2019 DECLARATION OF INSTITUTIONAL
ENVIRONMENTAL CONTROLS
BEAUFORT COUNTY SC - ROD
BK 3794 Pgs 0093-0099
FILE NUM 2019049738
09/17/2019 10:07:54 AM
RCPT# 948292
RECORDING FEES 25,00
Upon Recordation Return to;
Robinson, Bradshaw & Hioson, P A.
Attention. Chi is Loeb
Itll N. Tiyon Stim, Suite 1908
Charlotte, NC 3K?.4S
STATE OF SOUTH CAROLINA
DECLAMATION OF
COUNTY OF BE AUFORT INSTITUTIONAL ENVIRONMENTAL
CONTROLS
Site Name: Kalama Specialty Chemicals
EPA ID: SCDG94995503
Region: 4
State. SC
City/County: Beaufort/Beaufort County
THIS DECLAMATION OF INSTITUTIONAL ENVIRONEMNTAL CONTROLS
("Declaration") is made this jj day of »;>„ t> f <¦ , -01(>, by KALAMA SPECIALTY
CHEMICALS, INC., a Washington corporation (the "Declarant").
RECITALS
A. Declarant is the owner of two parcels of land containing a total of approximately
50 acres located at 3090 Trask Parkway in Beaufort, Beaufort County, South Carolina (the
"Site"),
B. A legal description of the Site Declarant is attached hereto as Exhibit. A and made
part hereof.
C. The Site Is shown on Exhibit 1 attached hereto and made part hereof.
D. Declarant desires to impose certain institutional controls on the Site due to the
presence of the following substances ia the groundwater under the Site: 1,2-Dichloroethane,
Benzene, Toluene, Ethylbenzene, Xylene and Methylene Chloride,
E. This Declaration shall be recorded in the Beaufort County Register of Deeds,
Declarant shall also request that the City of Beaufort Planning Department and the Beaufort
County Planning Department keep a copy of this Declaration on file.
NOW, THEREf GEE, Declarant, for itself and its successors and assigns imposes and
places the following institutional controls upon the Site and otherwise agrees as follows:
K-l
-------
1, Institutional Controls. No portion of the Site will be used in violation of the
following institutional controls.
(a) The Site shall not be used for residential purposes. For purposes of this subsection,
residential purposes include any dwelling (house, apartment or condominium), school,
hospital/medical clinic, nursing home/assisted living facility, daycare facility, outdoor
playground and outdoor recreation area, as well as outdoor agriculture activities.
(b) No surface, groundwater or other subsurface water at, on, or under the Site shall be
used for consumption by humans or animals, irrigation or any other purpose that might
bring it into contact, directly or indirectly, with humans or animals, provided that this
subsection (b) shall not restrict environmental investigation and remediation work at the
Site.
2, Amendment to Declaration, This Declaration may be amended only by a
written agreement executed by Declarant and the United States Environmental Protection
Agency.
3, Contacts. For purposes of the institutional controls set forth above, the point of
contact for Declarant shall be:
Kahuna Specialty Chemicals, Inc.
Attn: Executive Director, Remediation Programs
United Technologies Corporation
9 Farm Springs Road
Farmington, CT 06032-2568
For purposes of the institutional controls set forth above, the point of contact for the
United States Environmental Protection Agency shall be:
U.S. EPA Region 4
61 Forsyth Street
Atlanta, GA 30303
Attn: Candice Teichert, Remedial Project Manager
Declarant or the United States Environmental Protection Agency may change its point of contact
by filing an instrument in the Beaufort County Register of Deeds. The United States
Environmental Protection Agency shall provide a copy of any change of its point of contact to
the point of contact for Declarant, and Declarant shall provide a copy of any change of its point
of contact to the United States Environmental Protection Agency.
4, Binding Effect, The covenants, conditions and restrictions contained in this
Declaration shall run with the land and shall be binding on Declarant, its successors and assigns
in title to all or part of the Site, and each tenant now or hereafter leasing any part of the Site,
This Declaration shall be superior to all leases, conveyances, transfers, assignments, contracts,
mortgages, deeds of trust and other encumbrances and documents affecting all or any part of the
Site that is recorded after the recording of this Declaration. Any person or entity acquiring title
K-2
-------
to, or an interest in, any part of the Site shall acquire and hold title expressly subject to the
provisions of this Declaration.
5, Remedies for Breach. The terms and conditions of this Declaration shall be
enforceable by Declarant, the United Stales Environmental Protection Agency or the South
Carolina Department of Health & Environmental Control, or by their successors or assignees, by
an action at law or in equity. Without limiting the foregoing. Declarant may assign, in whole or
in part, any of its rights under this Declaration to any affiliate of Declarant, and to any
subsequent owner of all or any portion of the Site,
6- Severability. Invalidation of any covenant or restriction contained in this
Declaration by judgment or court order shall not affect any other provisions of this Declaration
ail of which shall remain in foil force and effect.
7, Governing Law. This Declaration has been entered into under, and shall be
construed in accordance with, the laws of the State of South Carolina.
[signature on following page]
K-3
-------
IN WITNESS WHEREOF, Declarant has executed this Declaration as of the day and year frst
above written.
Signed and delivered
In the presence of:
/I / .
/
Wi'tiies/# I Uu ^ WiL,
..J)
Witness#2;'bianam, faj*^^
DECLARANT:
KALAMA SPECIALTY CHEMICALS, INC.
.
By: < ___
NamcT?- +r~ • c r. ftu.tr "
Title: fi\r ibx'tM'T
STATE OF £J ojL ihA )
~ " ) ACKNOWLEDGMENT
COUNTY OF P [ t\ h )
I ' ^LV m« . _J- _ £yJUit l£lxl>. _ (Notary Public), do hereby certify that
KALAMA SPECIALTY CHEMICALS, INC., by -ft'ltUc. k, ftLLfK', its
» personally appeared before me this day and acknowledged the due
execution of the foregoing instrument,
'Witness my hand and seal this / / day of •. '¦: A.. 2019,
>¦'.. /, v.. y
'' N karv Publi c for , .
i • ' - f—f —
- My Commission Expires: _ t''pjjet
\Notnrinl W/l / #"»*X Nottfy Public StaSs of Florida
livoiariai aeai] \ f\S\ Jamie Lee Carmichael
> lqfv 3 My Commission GG 273809
> £*P«» 11/04C022
K-4
-------
EXHIBIT A
Legal Description of the Site
PARCEL 1:
ALL that certain piece, parcel or tract of land situate near Grays Hill in Beaufort
Township, Beaufort County, South Carolina, containing sixteen and thirty-five hundredths
(16,35) acres as shown on a plat prepared by R. D, Trogdon, Jr., R.L.S., dated October 12,
1972, by which plat said parcel or tract is shown to measure and bound as follows, to-wit:
Commencing at a concrete cornerstone on the Western edge of the right-of-way of U. S.
Highway 21 from said point of beginning S74°07'W a distance of one thousand five
hundred forty-nine and fifty hundredths (1,549.50') feet to a concrete marker on the center
of the right-of-way of the Seaboard Coast Line Railroad; tlience S68°26"40"K a distance of
one thousand two hundred eighty-seven and sixty-two hundredths (1,287.62*) feet to a
concrete marker; thence N10°47'W for a distance of one hundred (100*) feet to an iron pin;
thence N77°15'E a distance of four hundred eleven and eight tenths (411.8") feet to a
concrete marker on the Western edge of U. S. Highway 21; thence N11 °15'10"W along the
Western edge of U.S. Highway 21 a distance of seven hundred eight and twenty-three
hundredths (708.23') feet to the point of beginning.
Said property is subject to the right-of-way of the Seaboard Coast Line Railroad at the
Western portion of this lot which is triangular in shape and measures fifty and sixty-eight
hundredths (50.68') feet on its Northern side and sixty-six and ninety-three hundredths (66.93')
feet on its Southwestern side and thirty-nine and eighty-two hundredths (39.82') feet on its
Eastern side.
PARCEL 2:
All that certain piece, parcel or tract of land, with all improvements thereon, containing 36.3 acres, more or
less, situate, lying and being on Port Royal Island, in Beaufort County, South Carolina, west of the United
States Marine Corps Air Station, as shown on the plats therrof recorded in Plat Book 28 at Page 125 in the
EMC Office for Beaufort County, South Carolina
SAVE AND EXCEPT therefrom all tot certain piece, parcel or lot of land consisting of one (1) acre, more or
less, situation, lying and being on Prat Royal Island, Beaufort Township. Beaufort County, South Carolina, and
being more particularly described in that certain deed recorded in Deed Book 101 at Page 207 in said RMC
Office.
FURTHER SAVE AND EXCEPT therefrom all that certain piece, parcel or lot of land consisting of one and
four one-hundredths (1.04) acres, more or less, situate, lying and being on Port Royal Maud, Beaufort
Township, Beaufort County. South Carolina, and being more particularly described in that certain deed
recorded in Deed Book 133 at Page 198 in aid RMC Office.
K-5
-------
FURTHER SAVE AND EXCEPT therefrom all that certain piece, parcel or lot of land consisting of one and
eight-tenths (i ,8) acres, more or less, situate, lying and being on Port Royal Island, Beaufort Township,
Beaufort County, South Carolina, and being more particularly described in that certain deed recorded in Dad
Book 133 at Page 199 in said RMC Office.
TMS EI 00 020 000 0091 0000 and El00 020 000 0089 0000
TMs being property conveyed to Kalaraa Specialty Chemicals, Inc., by deeds recorded in Book
285, Page 991 and Book 34 L Page 745, each, in the Beaufort County Register of Deeds.
K-6
-------
EXHIBIT B
The Site
r —
\
•>
\
— •**•* " *«.*-« - +*-~ \
~~4— |tfC3
O^i I i i ^ t
I i } i :
\ ****** ** #L - w- - -ag»*fc
\ . ** lfc*E2—
\
rt /* MLWW \
\ U i »«(»-, '
•«c\. "4«. 0- r
Ji
L >».! ""j"
\ - ->f
\ <*-•« :, |— j
\ - "•% V I—J
«¦* «# :
\
\ ~ * »•»¦ »•¦ | 1*
\ ~\ — \ ~o \ >,
V w U--^n
^ •-- - sr:
•» #*• 17
9*41
^ wr-SB: f,
\
TBMWJN? ^ _,
srsroa \ v
bmuotg «-A n»»eR 1
-*1 - . mtam cm \
» \ jr. ^
-c
\
ft
P6WIt
KSD F*»JW
% ^T1 *"""* " ,«, J\ft
i **"*'*-rg*M&» <0 »H'/»». \
5, //¦»••~ V ^ V« »
¥, *'' *%*, •»»• **0>« "" *-.»
FGMfOt *ewra&
------- |