DERR-2025-009408

SITE INSPECTION
ANALYTICAL RESULTS REPORT
Bradshaw Auto
Utah County, Utah
UTN000821042
June 2025
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Bradshaw Auto – UTN00821042
SITE INSPECTION
ANALYTICAL RESULTS REPORT
Bradshaw Auto
Utah County, Utah
UTN000821042
Utah Department of Environmental Quality
Division of Environmental Response and Remediation
Prepared by: Michael Swistak
Approved: ____________________________________________ Date: ________
Michael Swistak, Project Manager
Approved: ____________________________________________ Date: ________
Tom Daniels, Site Assessment Section Manager
Approved: _____________________________________________ Date: ________
Ryan Dunham, Site Assessment Manager, EPA Region
06/12/2025
06/12/2025
06/12/2025
Table of Contents
1.0 INTRODUCTION ................................................................................................................................................... 1
2.0 OBJECTIVES.......................................................................................................................................................... 1
3.0 SITE DESCRIPTION .............................................................................................................................................. 2
3.1 SITE LOCATION AND DESCRIPTION ......................................................................................................................2
3.2 SITE HISTORY AND PREVIOUS WORK ...................................................................................................................2
4.0 FIELD ACTIVITIES ............................................................................................................................................. ..4
4.1 SITE INSPECTION WORK PLAN FIELD ACTIVITIES .............................................................................................. ...4
5.0 DEVIATIONS FROM THE WORK PLAN ......................................................................................................... ..5
6.0 WASTE/SOURCE CHARACTERISTICS ............................................................................................................ ..6
6.1 WASTE/SOURCE PROPERTIES ............................................................................................................................. ..6
6.2 WASTE/SOURCE SAMPLE LOCATIONS ................................................................................................................ ..6
6.3 WASTE/SOURCE DATA ASSESSMENT ...................................................................................................................7
7.0 GROUNDWATER PATHWAY ............................................................................................................................. 8
7.1 HYDROGEOLOGY ............................................................................................................................................... ..8
7.2 GROUNDWATER EXPOSURE TARGETS ................................................................................................................ ..8
7.3 GROUNDWATER SAMPLE LOCATIONS ................................................................................................................ ..9
7.4 GROUNDWATER ANALYTICAL RESULTS ............................................................................................................ ..9
7.5 GROUNDWATER EXPOSURE PATHWAY CONCLUSIONS....................................................................................... 10
8.0 SURFACE WATER PATHWAY ......................................................................................................................... 11
8.1 HYDROLOGY ...................................................................................................................................................... 11
8.2 SURFACE WATER EXPOSURE TARGETS AND CONCLUSIONS .............................................................................. 11
9.0 SOIL EXPOSURE PATHWAY ............................................................................................................................ 12
9.1 GEOLOGY .......................................................................................................................................................... 12
9.2 SOIL EXPOSURE TARGETS AND CONCLUSIONS .................................................................................................. 12
10.0 SOIL VAPOR/SUBSURFACE INTRUSION PATHWAY ................................................................................ 13
10.1 SOIL VAPOR BACKGROUND ............................................................................................................................. 13
10.2 SOIL VAPOR EXPOSURE TARGETS ................................................................................................................... 13
10.3 SOIL VAPOR INTRUSION SAMPLE LOCATIONS.................................................................................................. 13
10.4 SOIL GAS ANALYTICAL RESULTS .................................................................................................................... 14
10.7 SOIL VAPOR/SUBSURFACE INTRUSION EXPOSURE PATHWAY CONCLUSIONS .................................................. 15
11.0 AIR PATHWAY ................................................................................................................................................. 16
11.1 METEOROLOGY ............................................................................................................................................... 16
11.2 AIR EXPOSURE PATHWAY TARGETS AND CONCLUSIONS ................................................................................. 16
12.0 DATA QUALITY ............................................................................................................................................... 16
12.1 DATA QUALITY ASSESSMENT .......................................................................................................................... 16
12.2 DATA QUALITY OBJECTIVES ........................................................................................................................... 17
13.0 SUMMARY AND CONCLUSIONS .................................................................................................................. 18
14.0 REFERENCES .................................................................................................................................................... 20
Site Inspection – Analytical Results Report
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LIST OF FIGURES
Figure 1 Site Location Map
Figure 2 Detailed Site Location Map
Figure 3 Groundwater Analytical Results Map
Figure 4 Soil Gas Analytical Results Map
LIST OF TABLES
Table 1 Sample Locations, Descriptions, and Rationale
Table 2 Summary of Groundwater Analytical Results
Table 3 Summary of Soil Gas Analytical Results
Table 4 Data Quality Concerns, Adjustments, and Qualifications
Table 5 Data Quality Objectives
LIST OF APPENDICES
Appendix A Bradshaw Auto Site Inspection Work Plan
Appendix B Bradshaw Site Inspection Field Notes
Appendix C Consent for Access to Property Form
Appendix D EPA START SI Sampling Support Trip Report
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1.0 INTRODUCTION
Under authority of the Comprehensive Environmental Response, Compensation, and Liability
Act (CERCLA) of 1980, the Superfund Amendments and Reauthorization Act (SARA) of 1986,
in accordance with the National Oil and Hazardous Substances Pollution Contingency Plan
(NCP), and through a Cooperative Agreement with the U.S. Environmental Protection Agency,
Region 8 (EPA), the Utah Department of Environmental Quality (UDEQ) Division of
Environmental Response and Remediation (DERR) has prepared this Site Inspection (SI)
Analytical Results Report (ARR) for Bradshaw Auto, UTN000821042 (herein referred to as the
“Site”) in Utah County, Utah.
This PA was initiated because chlorinated solvents, including tetrachloroethene (PCE),
trichloroethene (TCE), cis-1,2-dichloroethene (cis-1,2-DCE) and vinyl chloride (VC), were
detected in groundwater at the Site beginning in 1995. These hazardous substances were
identified through a Phase I Environmental Site Assessment (ESA), conducted by the
environmental consulting firm Wasatch Environmental on behalf of the property owners
(Swistak, 2021). DERR completed the PA in March of 2021 and recommended further
investigation of the Site through a formal Site Investigation (SI). Additional groundwater and
soil gas samples were collected and analyzed as part of this SI in June of 2023. The purpose of
this report is to present new data, summarize pertinent results from previous studies, identify
potentially hazardous conditions, describe data gaps, and determine the most appropriate next
steps that can be taken to protect human health and the environment at the Site.
2.0 OBJECTIVES
The objectives of the sampling performed at the Site were to determine the source and extent of
contamination that could pose a threat to human health and the environment. The findings
contained herein serve as a record of hazardous materials identified within samples from the Site
and provide a basis upon which to determine the appropriateness of continued management
under CERCLA, or including it within another cleanup program or authority. This report
presents new data from groundwater and soil gas samples, along with limited data from previous
investigations. The objectives of the sampling associated with this SI were to:
●Provide a narrative summary of the accumulated information into an SI ARR;
●Identify and assess all contributing sources of contamination at the Site;
●Identify the levels of chlorinated solvents in groundwater and soil gas near
businesses and homes near potential source areas;
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●Identify potential targets that may be affected by Site contamination, as well as
other targets that may be impacted by the migration of the contaminants via the
suspected exposure pathways;
●Determine if continued assessment work under CERCLA is warranted.
3.0 SITE DESCRIPTION
Information pertaining to the history and current status of the Site was obtained from the
Preliminary Assessment – Bradshaw Auto (Swistak, 2021), several historical environmental
investigations, and various field observations.
3.1 Site Location and Description
The Site is located in the east central portion of the Utah Lake Valley, SW ¼ , Section 1,
Township 7S, Range 2E, Salt Lake Base Meridian (Figure 1). The Site's latitude and longitude is
40°14'3.69"N and 111°40'0.08"W (Appendix D). The Site is located in the central portion of the
city block, northeast of the 500 West and Center Street intersection in Provo, Utah. The area
surrounding the Site is primarily commercial. Adjacent properties to the Site include an
apartment building to the east, a Mountain America Credit Union to the north, an Autoglass store
and Self Help building to the northeast, a Fresh Market grocery store to the west across from 500
West, and a series of small businesses located in historic buildings located on the north side of
Center Street. The adjacent properties surrounding the Site are presented in Figure 2.
3.2 Site History and Previous Work
Provo Foundry and Machine Company first purchased the property in 1919 and operated until
1922. In 1922, Superior Motor Company purchased the property and operated until 1946. In
1950 a new building in which Bradshaw Auto operated was constructed. In 1971 the Bradshaw
Investment Corporation purchased the property via a Warranty Deed from the Provo City
Corporation and operated an automotive service facility for approximately 20 years. The
building since then has been demolished and the Site is vacant.
Chlorinated solvents and petroleum hydrocarbons were released at the Site through a sump drain
located within the former auto service building. Over many years, spent solvents from their
operations were discharged into this sump, which was located on the south side of the property.
The sump was made from masonry blocks that were not cemented together with mortar, and was
not connected to the local sanitary sewer system. In 1995 and 1996 Wasatch Environmental
decommissioned the sump and historic storm water drainage system at the Site during an
excavation.
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The property was purchased by First Interstate Bank of Utah N.A., which subsequently merged
with Wells Fargo Bank of Utah N.A.. Wells Fargo held the title to the property in trust to various
beneficiaries from 1987 to 2003. Wells Fargo retained the services of Wasatch Environmental as
part of joining the Voluntary Cleanup Program (VCP) in 1997. Work performed as a part of the
VCP included installation of monitoring wells, groundwater sampling, indoor and outdoor air
sampling, soil sampling, installation of a density driven convection remediation system, and a
soil excavation of the Bradshaw Auto property. In 2003 a new part-owner of the property,
Drukman Properties LLC, was brought into the VCP agreement for the Site. A closure plan was
never completed and the VCP agreement for the Site was terminated in 2014. Wasatch
Environmental submitted the following reports as part of the VCP:
●Phase I Environmental Site Assessment (May, 1995).
●Report of Liquid and Sludge Removal/Disposal, Decommissioning of the Sump and
Drain System, and Limited Subsurface Investigation (February, 1996).
●Report of Additional Subsurface Investigation (July, 1996).
●Voluntary Cleanup Program Application (October, 1996).
●Groundwater Monitoring Report (November, 1996).
●Groundwater Monitoring Report (September, 1997).
●Addendum Letter to Voluntary Cleanup Application (November, 1997).
●Groundwater Monitoring Report (June, 1999).
●Installation of Density Driven Convection (DDC) Remediation System (2000).
●Final Corrective Action Plan (December, 2000)
●Groundwater Monitoring Report (July, 2001).
●Ambient Air Sampling Provo Furniture Store Report (January, 2002)
●Groundwater Monitoring Report (May, 2002).
●DDC System Shut Down (July, 2002).
●Remediation Air Sampling Report (October, 2002).
These previous studies identified tetrachloroethene (PCE), trichloroethene (TCE), cis-1,2-
dichloroethene (cis-1,2-DCE), vinyl chloride (VC), naphthalene, and other compounds within
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groundwater samples (Table 1). Notably, the 1996 Wasatch Environmental Report of Additional
Subsurface Investigation identified TCE within groundwater at a concentration of 31,000 µg/L,
which is much higher than the EPA Maximum Contaminant Level (MCL; 5 µg/L) for drinking
water (Wasatch Environmental, 1997). PCE was also detected above its MCL (5 µg/L) at an
elevated value of 28,000 µg/L during a subsequent groundwater sampling event conducted by
Wasatch Environmental in 1999 (Table 1). Cis-1,2-DCE, vinyl chloride, and trans-1,2-DCE were
also detected at levels above respective MCLs (cis 1,2-DCE MCL: 70 µg/L, vinyl chloride
MCL: 2 µg/L, trans-1,2-DCE MCL: 100 µg/L) at numerous points around the Site during
multiple sampling events. Ambient air samples taken downgradient from the contaminant source
outside the former Provo Furniture Store detected numerous contaminants; however, none of
them exceeded commercial RSLs. Cleanup of the on-Site contaminants met cleanup standards
and further remedial action was no longer pursued; however, contamination may have migrated
off-Site and the extent of contamination has not been fully investigated.
4.0 FIELD ACTIVITIES
Sampling activities for this ARR was conducted from June 29 to June 29, 2023. The sampling
activities conducted during the EPA-approved Site Inspection Work Plan ‒ Bradshaw Auto
(SIWP) (Appendix A, Swistak, 2022) were coordinated by Michael Swistak, a DERR Project
Manager. All sampling activities were documented in the Bradshaw Site Inspection Field Notes
(Appendix B). A Consent for Access to Property form (Appendix C) was signed by private
property owners prior to the sampling event to allow DERR to perform groundwater and soil gas
sampling. Right-of-way permits were completed and approved by Provo City to allow for
sampling on Provo City property. Chain-of-Custody forms and sample documentation were
prepared using SCRIBE software by the EPA START contractor. A description of the sampling
activities is reported in the Bradshaw Auto SI Sampling Support Trip Report (Appendix D).
4.1 Site Inspection Work Plan Field Activities
Sampling activities for the SIWP included:
●The advancement of eight borings using direct-push technology (DPT) to five feet
below ground surface (bgs) for the collection of nine soil gas samples, including
one field duplicate; and
●The advancement of three borings using DPT to groundwater for the collection of
four groundwater samples, including a field duplicate; and
●The collection of seven groundwater samples from an existing network of
permanent monitoring wells.
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Soil gas samples were collected from a depth of five feet bgs. A six-inch stainless-steel screen
implant attached to Teflon tubing was lowered into the borehole with tubing extended to the
surface. The borehole was filled with sand pack around the screen with the remaining annular
space filled with bentonite up to the surface. The screens and tubing were left to equilibrate with
the surrounding vadose zone for 24 hours. The tubing was purged prior to sample collection with
vacuum canisters with one-hour regulators.
Groundwater samples were collected directly below the top of the water table from temporary
wells installed with DPT. Depth to groundwater was measured with an electronic water level
indicator and was approximately nine feet bgs at the Site. Samples were collected through
disposable, Teflon-lined, high-density polyethylene tubing using a peristaltic pump. Prior to
sampling, each temporary well was purged until groundwater was transparent. Groundwater
samples collected from permanent monitoring wells on Site were collected utilizing low flow
sampling with a peristaltic pump connected to 0.25-inch-diameter Teflon tubing; prior to
sampling each monitoring well was purged three times the casing volume before sample
collection began.
5.0 DEVIATIONS FROM THE WORK PLAN
Deviations from the EPA-approved Site Inspection Work Plan ‒ Bradshaw Auto (Swistak, 2022)
include the following:
●UDEQ and START were not granted property access to several sample locations
(BA_SG_07 and BA_MW1 through BA_MW3) and samples were not collected
from these locations.
●BA_MW10 and BA_MW11 were not sampled because the wells could not be
located and are assumed to be abandoned or destroyed.
●Groundwater samples were not collected from BA_TW_01, BA_TW_05, and
BA_TW_BACKGROUND due to difficult subsurface drilling conditions that
prevented the installation of these temporary wells; refusal was reached with the
Geoprobe above the water table at around 10 feet below ground surface(bgs) at
these locations.
●An unmarked irrigation line was found near the proposed location for samples
BA_SG_03 and BA_TW_03; field crews were unable to locate an alternate
sample location nearby that were free of utility markings and these samples were
not collected due to safety concerns.
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The changes to the SIWP did not alter the ability of this SI ARR to sufficiently describe
conditions at the Site.
6.0 WASTE/SOURCE CHARACTERISTICS
6.1 Waste/Source Properties
Volatile organic compounds (VOCs)‒‒including PCE, TCE, 1,1-DCE, cis-1,2-DCE, trans-1,2-
DCE, vinyl chloride, and benzene‒‒are the primary contaminants of concern at the Site. These
substances are highly volatile, producing hazardous vapors that can migrate upwards from
groundwater and soil into homes and businesses. Additionally, PCE, TCE, 1,1-DCE, cis-1,2-
DCE, trans-1,2-DCE, and vinyl chloride are dense non-aqueous phase liquids (DNAPLs)‒‒
liquids denser than and immiscible in water that tend to migrate downwards in groundwater and
flow through rock and sediments that normally impede fluid flow, making them very difficult to
remove from the groundwater system.
TCE, 1,1-DCE, cis-1,2-DCE, trans-1,2-DCE, and vinyl chloride are partial degradation products
that are produced as PCE breaks down under anaerobic conditions in the subsurface (Watts 2006;
Minnesota Pollution Control Agency 2006). TCE and vinyl chloride are more hazardous than
PCE alone and will continue to increase in concentration as PCE degrades. These chlorinated
solvents are highly toxic chemicals that are known to have effects on organ functions, fetal
development, and immune and nervous system function. Exposure to vapors may result in
headaches, nausea, unconsciousness, and death at high concentrations (ATSDR 2011a; 2011b;
2020a; 2020b; 2014). PCE, TCE, and vinyl chloride are known carcinogens (ATSDR 2020a;
2020b; 2014).
Benzene is a widely used chemical used to manufacture plastics, rubber goods, lubricants, dyes,
and detergents, and is found in gasoline, oil, and cigarette smoke (ATSDR 2015). There may be
several sources contributing to benzene contamination at the Site, including: leaking USTs,
leaking vehicles, and surficial spills of hydrocarbons and other chemicals at nearby dry cleaning
and/or automotive repair facilities. Breathing in high levels of benzene can result in dizziness,
confusion, unconsciousness, or even death. Long-term exposure can cause anemia, excessive
bleeding, and can affect the immune system. Benzene is a known carcinogen that can cause
leukemia (ATSDR 2015).
6.2 Waste/Source Sample Locations
Groundwater, subsurface soil, soil gas, indoor air, and outdoor air samples were collected at
potential source areas and nearby homes and businesses in order to determine contaminant
source areas, establish background concentrations, and assess the risk of exposure to residents
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and employees. Sample locations, descriptions, and rationale information are summarized in
Table 1 and described in further detail in sections 7.3, and 10.3 of this report. Sample locations
are shown in Figures 3 and 4. Photographs of sample locations can be found in Appendix D.
6.3 Waste/Source Data Assessment
Pertinent EPA guidance indicates that analytical results from field samples should be compared
to those from background samples in order to determine observed contamination in soils or an
observed release in other media. Samples are identified as contaminated if they significantly
exceed background concentrations. This determination is made using two criteria:
•If a substance is not detected in the background sample, the concentration of the
substance in the sample must equal or exceed the sample quantitation limit (SQL)—the
lowest concentration at which an analyte is both proven present and measured reliably; or
•If the background sample concentration equals or exceeds the SQL, the sample must
exceed the background concentration by at least three times (U.S. EPA 1990).
In this SI, if an analyte was shown to be present in groundwater using either of the above criteria,
the results for the sample were compared to U.S. EPA Regional Screening Levels (RSLs)
calculated using a Target Cancer Risk of 10-6 and a Hazard Quotient of 1.0. If an analyte was
shown to be present in soil gas gas using either of the above criteria, the results for the sample
were compared to U.S. EPA Vapor Intrusion Screening Level target sub-slab and near-source
soil gas concentrations (VISLs) calculated using a Target Cancer Risk of 10-6 and a Hazard
Quotient of 1.0 for non-cancer effects. This allows for direct comparison of contaminant
concentrations to their residential and commercial VISL concentrations.
For the groundwater exposure pathway, RSLs have Tapwater benchmarks and Maximum
Contaminant Level (MCL) benchmarks, which are drinking water standards. For the soil and air
exposure pathways, RSLs have Residential and Industrial benchmarks. For indoor air, results
will be compared to Residential RSLs; for outdoor air results, results will be compared to
Industrial RSLs. Similarly, VISLs have residential and commercial benchmarks. Exceeding a
given benchmark does not constitute a confirmed threat to human or environmental health;
rather, exceeding a benchmark is an indication that a sampling location might warrant further
consideration along other site-specific factors.
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7.0 GROUNDWATER PATHWAY
7.1 Hydrogeology
The principal groundwater reservoir is composed of three confined aquifers: a shallow artesian
aquifer in deposits of the Pleistocene age, a deep artesian aquifer in the deposits of the
Pleistocene age, and an artesian aquifer in deposits of Tertiary and Quaternary age. The aquifers
typically are separated by confining beds which vary in thickness. These confining beds usually
cause a substantial difference in the hydrostatic pressure between aquifers resulting in vertical
movement of water from one aquifer to another. The shallow artesian aquifer ranges in thickness
from 10 to 150 feet and is thickest towards the mountains and thinnest near Utah Lake. This
aquifer and the deep artesian aquifer in the deposits of Pleistocene age are separated by a
confining layer 20 to 200 feet thick. The deep artesian aquifer generally includes more than one
water-bearing zone separated by fine-grained material. The total thickness of the aquifer ranges
from 50 to 200 feet. The artesian aquifer in deposits of Tertiary and Quaternary age includes
several water-bearing zones and confining layers. This aquifer has been penetrated by few
groundwater wells but is generally assumed to be at least 600 feet thick and consists of layers of
semi-consolidated materials (UDNR, 1985).
The Site is located in an area of groundwater discharge; indicating the general flow of
groundwater is upwards towards the surface and entering into surface water bodies (AGRC,
2017). The groundwater flow direction at the Site is assumed to follow the general topography
and flow to the south. The depth to groundwater at the Site is approximately ten feet bgs
(Appendix D).
7.2 Groundwater Exposure Targets
There are 16 active municipal drinking water supply wells located within a four-mile radius of
the Site serving three water supply systems with a total user population of 214,927 (U.S. Census
Bureau, 2019; Swistak, 2021). The municipal groundwater well closest to the Site is Provo
City’s utilities well, located upgradient about 0.63 miles north-northwest of the Site. The total
completed depth of this well is approximately 700 feet bgs. There are no downgradient (south)
municipal drinking water supply wells within a four-mile radius of the Site (Appendix A).
While there are municipal drinking water wells in close proximity to the Site, there is a low
likelihood of drinking water exposure. Groundwater contamination is unlikely to reach these
wells due to them being upgradient from the Site, as well as being hundreds of feet deep. It is
also unlikely because the Site is situated in a groundwater discharge zone. In a discharge zone an
upward hydraulic gradient exists within the confined basin-fill aquifers, resulting in springs,
diffuse seepage, and flowing wells. This upward hydraulic gradient restricts the downward
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movement of contaminants making the deeper aquifer, where the municipal wells draw water
from, less susceptible to shallow groundwater contamination.
There are 1,455 approved underground Points of Diversion (PODs) located within four miles of
the Site (Figure 4). Of these, 68 list “domestic” as at least one of the well uses. The closest four
of the downgradient PODs are located 900 to 1400 feet to the south and southwest (Utah
Division of Water Rights, 2021). There are numerous PODs located downgradient of the Site
within a half mile radius. The Site and associated contaminants of concern are not in any
wellhead protection zones.
7.3 Groundwater Sample Locations
Groundwater samples were collected from an existing monitoring well network located around
the former Bradshaw Auto facility (BA_MW4, BA_MW5, BA_MW7, BA_MW7, BA_MW8,
BA_MW13S/BA_MW3D, and BA_MW14) and from temporary monitoring wells (BA_TW_02,
BA_TW_02DUP, BA_TW_04, BA_TW_06). These locations are shown in Figure 3 along with
a subset of analytical results. The analytes selected for this subset were either detected at the Site
previously or were detected at one or more sampling locations during this SI. Boring logs and
depths to groundwater are recorded in Appendix D. Analytical results and sampling depths are
shown in Table 2.
7.4 Groundwater Analytical Results
Each groundwater sample was analyzed for VOCs (Table 2). Analytical results include the
following:
•BA_MW4: Detected analytes were all below RSLs.
•BA_MW5: 1,2-Dibromoethane [0.11 (J) µg/L] was detected above the EPA MCL. All
other analytes were below RSLs.
•BA_MW7: Detected analytes did were all below RSLs.
•BA_MW8: Detected analytes were all below RSLs.
•BA_MW13S: PCE [0.14 (J-) µg/L] was detected above the EPA MCL. All other analytes
were below RSLs.
•BA_MW13D: PCE [270 (J-) µg/L] and TCE [74 (J-) µg/L] were detected above their
respective EPA MCL. All other analytes were below RSLs.
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•BA_MW14: PCE [350 (J-) µg/L] and TCE [6 (J-) µg/L] were detected above their
respective EPA MCL. All other analytes were below RSLs.
•BA_TW_02: PCE [78 (J-) µg/L] and TCE [5.5 (J-) µg/L] were detected above their
respective EPA MCL. All other analytes were below RSLs.
•BA_TW_02DUP: PCE [70 (J-) µg/L] and TCE [5.1 (J-) µg/L] were detected above their
respective EPA MCL. All other analytes were below RSLs.
•BA_TW_04: Detected analytes were all below RSLs.
•BA_TW_06: PCE [5.7 (J-) µg/L] and TCE [24 (J-) µg/L] were detected above their
respective EPA MCL. All other analytes were below RSLs.
7.5 Groundwater Exposure Pathway Conclusions
Previous environmental investigations at the Site indicate the presence of a contaminated
groundwater plume that is migrating off-Site. Previous remedial actions at the Site, conducted by
Wasatch Environmental as part of the UDEQ VCP, lowered on-Site contamination to acceptable
levels; however, the off-Site contamination was never pursued or investigated further. A former
dry-cleaning facility may also have operated in the 1960s directly south of the Site, located at
449 West Center Street, and may have contributed contamination to the same groundwater plume
(Figure 2).
Groundwater data from this SI suggests that chlorinated solvent contamination originates from
the former Bradshaw Auto Facility and migrates south along the hydraulic gradient as far as
sample BA_TW_06 on W 100 S Street. Samples BA_MW13S and BA_MW13D were collected
from a nested well at depths of 17’ bgs and 25’ bgs, respectively. MW13D had significantly
higher levels of TCE and PCE, indicating that chlorinated solvent contamination is migrating
downward through the water column at the Site. Sample intervals and concentrations throughout
other samples collected during this SI are consistent with the notion that contaminants are
migrating downward through the water column (Table 2). A background sample was unable to
be taken due to unfavorable drilling conditions; groundwater samples were only able to be
compared to their appropriate screening levels as a result.
Elevated concentrations of PCE in groundwater were detected in samples throughout the Site,
with the highest levels in sample BA_MW_14, which is located immediately downgradient from
the Site. PCE contamination decreases in samples further downgradient from the Site
(BA_TW_02, BA_TW_04), but then increases at BA_TW_06. This may be a result of the
former dry-cleaning facility, Deluxe Cleaners & OK Laundry, situated between these sample
locations. Another supporting piece of evidence for contamination being present as a result of
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this former dry-cleaning facility is that TCE concentrations at BA_TW_06 are the highest
detected across the Site. TCE is the first degradation product that is produced as PCE breaks
down during reductive dichlorination. The former dry-cleaning facility in question operated
during the 1960s, 10 years prior to Bradshaw Auto, which would allow PCE to have more time
to break down and degrade into TCE. Given TCEs elevated presence in BA_TW_06 and the
operational period of the former dry-cleaner, it is plausible that there are multiple sources
contributing to the same groundwater plume.
The groundwater plume identified at the Site contains chlorinated solvents at levels exceeding
the MCL and/or Tapwater RSL benchmark. Known drinking water resources are up-gradient and
outside the range of this contamination. Groundwater contamination is unlikely to reach these
wells due to them being upgradient from the Site, as well as being hundreds of feet deep. It is
also unlikely because the Site is situated in a groundwater discharge zone (Cederberg, 2009). In a
discharge zone an upward hydraulic gradient exists within the confined basin-fill aquifers,
resulting in springs, diffuse seepage, and flowing wells (Cederberg, 2009). This upward
hydraulic gradient restricts the downward movement of contaminants making the deeper aquifer,
where the municipal wells draw water from, less susceptible to shallow groundwater
contamination. There are downgradient PODs that may be impacted by contamination at the Site;
however, due to the Site being in an urban area, most water users are likely connected to the
municipal water supply and not reliant on private domestic PODs (Swistak, 2021). Exposure to
contaminants via the groundwater pathway is unlikely, but not impossible; however, the primary
concern is that contaminants are migrating and may volatilize and expose targets via the soil
vapor intrusion pathway. These concerns are addressed in section 10.5.
8.0 SURFACE WATER PATHWAY
8.1 Hydrology
The Site is situated in downtown Provo in Utah Valley at an elevation of ~4,551 feet above mean
sea level on ground with a very gentle southwestward slope. Surface water at the Site is largely
captured by an engineered urban stormwater system that routes water to Provo Bay‒‒about two
miles to the west.
8.2 Surface Water Exposure Targets and Conclusions
There are no surface water streams, canals, or lakes within ~1.1 miles of the Site and no surface
derived drinking water sources within 4 miles (Utah Division of Water Rights, 2021). Surface
water from the Site follows a canal system that flows for approximately 2 miles before entering
the Provo Bay (Swistak, 2021). The Site and surrounding areas do not fall within any known
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Bradshaw Auto – UTN00821042
flood hazard area (FEMA, 2021). There are sensitive environments approximately 2 miles from
the Site. These environments include palustrine, low perennial riverine, and lacustrine limnetic
environments (Appendix A). The likelihood of exposure via surface water is low because surface
water at the Site is extremely ephemeral and not likely to interact with contaminant sources. No
surface water samples were taken at or around the Site as part of this ARR.
The Site is largely developed and paved over by concrete and other impermeable surfaces that
are conductive to overland flow during rain events. These areas are discontinuously fragmented
by lawns and greenspaces where surface water cannot easily infiltrate the ground surface and
recharge the shallow aquifer. It is unlikely that surface water provides a migration and exposure
pathway at the Site because surface water is extremely ephemeral and not likely to interact with
contaminant sources.
9.0 SOIL EXPOSURE PATHWAY
9.1 Geology
The Site lies in the northern portion of Utah Valley which is near the eastern margin of the basin
and range physiographic province. Utah Valley is a graben formed by normal faulting during the
Tertiary and Quaternary times. At the eastern boundary of the graben, which was formed by the
faulting along the Wasatch fault zone, the Wasatch Range has been uplifted as much as 7,000
feet. The western boundary of the graben is the Utah Lake fault zone, which extends under Utah
Lake, from Santaquin to Saratoga Springs and probably northward to the Jordan Narrows area.
The sediments found in Utah Valley consist of predominantly unconsolidated lacustrine, alluvial
fan, and fluvial deposits of Quaternary age. The maximum depth of these deposits is unknown
(UDNR, 1985).
A soil survey of Utah Valley by the United States Department of Agriculture, Soil Conservation
Service found the soils consist of a combination of Layton fine sandy loams, Provo Bay peaty
silt loams, and McBeth silt loams. Layton fine sandy loam is generally found on one to six
percent slopes and is described as well-drained and rapidly permeable. Runoff is slow, water
erosion is slight, and wind erosion is moderate. Provo Bay peaty silt loam consists of deep, very
poorly drained, strongly calcareous, nearly level soils. They are found in low-lying areas on the
valley bottoms. The McBeth silt loam is found on zero to one percent slopes and is described as
poorly drained. Runoff is slow and there is no erosion hazard (USDA, 1972).
9.2 Soil Exposure Targets and Conclusions
There is no evidence that chlorinated solvents are present in uncovered surface soils at the Site.
The vicinity of the Site is largely paved, vegetated, or landscaped. The nearest residence is
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Bradshaw Auto – UTN00821042
approximately 50 feet west of the Site and the population within one-quarter mile of the Site is
560 people (U.S. Census Bureau, 2019). There are seven businesses located to the south of the
former Bradshaw Auto facility on Center Street, as well as an apartment complex adjacent and to
the west of the Site. No soil samples were collected during at or around the Site as part of this
ARR.
10.0 SOIL VAPOR/SUBSURFACE INTRUSION PATHWAY
10.1 Soil Vapor Background
Contaminants within soils or groundwater, especially VOCs, can manifest as vapor in the
interstitial spaces between sediment grains and amongst soil particles. These volatile compounds
can then migrate upwards through soils and building materials, potentially affecting indoor air
quality and exposing individuals who live and work in the vicinity to dangerous chemicals in the
air that they breathe.
10.2 Soil Vapor Exposure Targets
Approximately 560 people live within a one-quarter mile radius of the Site (U.S. Census Bureau,
2019). There are seven businesses located directly to the south of the former Bradshaw Auto
facility on Center Street, as well as an apartment complex adjacent and to the west of the Site.
The people working and living in these properties could be exposed to subsurface vapor
intrusion. Most notable of these properties, the former Provo Furniture Store, is located directly
downgradient of the former Bradshaw Auto facility. The former Provo Furniture Store is
currently occupied by four new businesses. To the south of the Site, past Center Street, are more
businesses and residences that also may be impacted by contamination at the Site.
10.3 Soil Vapor Intrusion Sample Locations
During the SIWP, soil gas samples were collected from soil borings located near the former
Bradshaw Auto Facility (BA_SG_08 and BA_SG_07), from soil borings located downgradient
and south of Center Street (BA_SG_01, BA_SG_02/BA_SG_02DUP, BA_SG_04, BA_SG_05,
and BA_SG_06), and from a soil boring upgradient to establish background concentrations
(BA_SG_Background). These locations are shown in Figure 4 along with a subset of analytical
results. The analytes selected for this subset were either detected at the Site previously or were
detected at one or more sampling locations during this SI. Boring logs and depths to groundwater
are recorded in Appendix D.
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Bradshaw Auto – UTN00821042
10.4 Soil Gas Analytical Results
Each soil gas sample was analyzed for VOCs (Table 3). Analytical results include the following:
•BA_SG_01: 1,3-Butadiene [12 µg/m3] and Chloroform [5.0 µg/m3] were detected above
their respective EPA Residential VISL, however neither meet the observed release
criteria based on the background concentration. All other analytes did not qualify as
observed releases and were below EPA VISLs.
•BA_SG_02: Chloroform [22 (J) µg/m3] was detected above the EPA Commercial VISL,
however it did not meet the observed release criteria based on the background
concentration. All other analytes did not qualify as observed releases and were below
EPA VISLs.
•BA_SG_02DUP: Chloroform [12 (J) µg/m3] was detected above the EPA Residential
VISL, however it did not meet the observed release criteria based on the background
concentration. All other analytes did not qualify as observed releases and were below
EPA VISLs.
•BA_SG_04: 1,3-Butadiene [7.5 µg/m3] and Chloroform [9.5 µg/m3] were both detected
above their respective EPA Residential VISLs, however neither meet the observed
release criteria based on the background concentration. All other analytes did not qualify
as observed releases and were below EPA VISLs.
•BA_SG_05: 1,3-Butadiene [180 µg/m3] was detected above its EPA Commercial VISL,
Benzene [36 µg/m3] was detected above its EPA Residential VISLs, however neither
meet the observed release criteria based on the background concentration. All other
analytes did not qualify as observed releases and were below EPA VISLs.
•BA_SG_06: 1,3-Butadiene [29 µg/m3] and TCE [410 µg/m3] were detected above their
respective EPA Commercial VISLs; Benzene [27 µg/m3], PCE [720 µg/m3], and
Chloroform [12 µg/m3] were detected above their respective EPA Residential VISLs;
however, 1,3-Butadiene, Benzene, and Chloroform did not meet the observed release
criteria based on the background concentration. All other analytes did not qualify as
observed releases and were below EPA VISLs.
•BA_SG_08: 1,3-Butadiene [17 µg/m3] and PCE [3,700 µg/m3] were detected above their
respective EPA Commercial VISLs; Benzene [46 µg/m3] was detected above its EPA
Residential VISL; however 1,3-Butadiene and Benzene did not meet the observed release
criteria based on the background concentration. All other analytes did not qualify as
observed releases and were below EPA VISLs.
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•BA_SG_09: 1,3-Butadiene [20 µg/m3] was detected above its EPA Commercial VISL;
Benzene [34 µg/m3] was detected above its EPA Residential VISL; however, neither
meet the observed release criteria based on the background concentration. All other
analytes did not qualify as observed releases and were below EPA VISLs.
•BA_SG_Background: 1,3-Butadiene [47 µg/m3] was detected above its EPA
Commercial VISL. Benzene [27 µg/m3] and Chloroform [8.9 µg/m3] were detected above
their respective EPA Residential VISLs. Chloroform is widespread in the environment as
a result of the chlorination of drinking water, wastewater, and swimming pools. All other
analytes were below EPA VISLs.
10.7 Soil Vapor/Subsurface Intrusion Exposure Pathway Conclusions
A previous environmental investigation at the Site in 2001 identified the presence of PCE and
TCE in indoor air samples collected from the former Provo Furniture Store (Swistak, 2021).
Since this indoor air sampling event, no further indoor air samples have been collected from the
property. The Provo Furniture Store has now been divided into multiple businesses and the risk
of soil vapor intrusion at these businesses may still be present.
In this SI, soil gas samples had detections of PCE above EPA VISLs in BA_SG_08, located next
to the former Bradshaw Auto facility, and BA_SG_06, which is the furthest down gradient
sample collected during this SI. Sample BA_SG_06 was the only sample with detections of TCE
above the EPA VISL.
PCE and TCE were detected in samples collected downgradient of the Site along Center Street
(BA_SG_01, BA_SG_02/BA_SG_02DUP, and BA_SG_04) at concentrations below screening
levels. The minimal detection of chlorinated solvents in these samples may suggest that the
impacts of soil vapor intrusion may be confined to an area that is closer in proximity to the Site.
However, the increase in PCE and TCE concentrations in BA_SG_06 suggests that the threat of
SVI increases near W 100 S Street, and potentially further south into a residential area.
BA_SG_06 is the only sample with significantly elevated levels of TCE, which further suggests
that the former dry-cleaning facility at 449 West Center Street, discussed in section 7.5, may be
another contributor of contamination to the groundwater plume found at the Site.
Areas of the Site appear to have a risk of exposure to contaminants via the soil vapor intrusion
pathway. Elevated levels in close proximity to the Site present potential indoor air impacts to
nearby businesses. Elevated levels at BA_SG_06 also present potential indoor air impacts to
residential homes directly downgradient of the sample location. Additional soil gas and indoor
air sampling may be necessary to fully understand the impact and extent of the SVI pathway at
the Site.
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11.0 AIR PATHWAY
11.1 Meteorology
The Site is located in a semi-arid continental climate (Eubanks et al. 1979). The Site receives
moderate annual precipitation. Data from the Provo Brigham Young University weather
monitoring station indicates the average precipitation is 19.63 inches per year with a normal
monthly high of 2.16 inches in May and a normal monthly low of 0.84 inches in July (WRCC
2016). The two-year 24-hour rainfall is 1.53 inches (NOAA, 2016). The daytime temperatures
fluctuate throughout the year with temperatures reaching an average high of 93°F in July and a
low of 38.7°F in January (WRCC, 2016).
11.2 Air Exposure Pathway Targets and Conclusions
The area near the Bradshaw Auto facility is covered with a mix of asphalt, concrete, and grass
with both commercial and residential properties near the Site. There is little opportunity for Site
wastes to expose persons through air. There are approximately 560 people living within one-
quarter of a mile of the Site and are approximately 140,769 persons living within a four-mile
radius (U.S. Census Bureau, 2019). The nearest home is located approximately 50 feet to the east
of the Site. There does not appear to be an immediate threat to human health at the Site via the
air exposure pathway based on the available information. The two ambient air samples collected
outside of the Provo Furniture Store by Wasatch Environmental showed detections of various
contaminants during both sampling events in 2001, with only benzene values exceeding RSLs
(Appendix A). These air samples were taken next to a busy road, so while exposure via the air
pathway is possible, detections of benzene may be a result of passing by vehicles. No additional
air samples were collected as part of this ARR.
12.0 DATA QUALITY
12.1 Data Quality Assessment
The Bradshaw Auto SI Sampling Support Trip Report (Appendix D) includes laboratory
analytical results and Stage 2A data validation for all samples collected. These samples were
collected in accordance with methods outlined in the DERR Quality Assurance Program Plan
and relevant EPA guidance documents. All data quality concerns, adjustments, and qualifications
are summarized in Table 4.
The QA/QC samples collected as part of this SI included the collection of field duplicate samples
for all matrices, and a matrix spike/matrix spike duplicate and a field blank samples collected for
groundwater samples.
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Field duplicates act to estimate the precision of sampling and laboratory analysis. The analytical
results for field duplicates are compared for relative percent difference (RPD) between the two
samples. The RPD is calculated as follows:
RPD = Absolute difference between duplicate results x 100 = %
Mean of duplicate results
Generally, an RPD of 20% is considered acceptable for water samples and an RPD of 30% is
acceptable for soil gas samples. The RPD for groundwater duplicate samples ranged from 0‒16%
for all detected analytes except carbon disulfide (87%), which is a common laboratory
contaminant (Table 2). The RPD for soil gas duplicate samples ranged from 24-78% for detected
analytes (Table 3), which exceeds acceptable criteria. There were inconsistencies in the final
vacuum pressures for BA_SG_02 and BA_SG_02DUP; however, it may not have been a great
enough inconsistency to impact the RPDs to this extent (Appendix D). The RPD for propene,
chloroform, TCE, and PCE exceeded the QAPP and therefor were qualified as estimated values
(flagged J). All other soil gas samples, except BA_SG_01, had acceptable start and end times
and start and end vacuum pressures, indicating that these sample results may more closely
represent soil gas conditions during the time of sampling. Despite mentioned data issues with
BA_SG_02 and BA_SG_02DUP, sample results can still be used to make informed decisions at
the Site.
A field trip blank was collected to accompany groundwater samples. Chloromethane was
detected in samples. This suggests that this analyte may have been introduced to samples in the
laboratory.
12.2 Data Quality Objectives
The Data Quality Objectives outlined in Table 5 sought to answer the following questions:
•Are soil vapors near properties presenting a threat of soil vapor intrusion?
•Is groundwater contamination migrating off Site?
•Is further sampling necessary to evaluate the extent of contamination and exposure
targets?
Data from this SI indicates that there is an additional source of chlorinated solvents to the
groundwater plume originating from the Site. Portions of the Site appear to present a risk of soil
vapor intrusion, particularly the south portion of the Site near residential homes; additional soil
gas and/or indoor air sampling may be necessary to confidently assess the risk at properties
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Bradshaw Auto – UTN00821042
proximal to the contaminant source areas. Groundwater data suggests that there is a groundwater
plume extending from the former Bradshaw Auto facility downgradient to the southernmost
sample point at BA_TW_06, potentially influenced by additional contamination from the former
dry-cleaning facility at 449 West Center Street.
13.0 SUMMARY AND CONCLUSIONS
A Preliminary Assessment of the Bradshaw Auto was initiated because chlorinated solvents were
detected in groundwater at the Site starting in 1995 as a result of improper handling of spent
solvents at a former auto service building. Additional investigations and cleanup efforts were
conducted by Wasatch Environmental at the Site on behalf of the property owners as part of the
VCP program at UDEQ. These investigations and cleanup efforts did not address off-Site
contamination that resulted from the operational history at the Site. The Preliminary Assessment
was completed in 2021 recommending additional off-Site sampling be conducted.
For this Site Inspection, groundwater and soil gas samples were collected near potential source
areas and residential areas in order to determine if upgradient sources are contributing to
chlorinated solvent contamination at the Site and assess the risk of exposure to human health at
nearby residential and commercial properties. No surface water, soil, or indoor air samples were
collected during this Site Inspection. The potential for exposure via the surface water and soil
pathways are minimal. The potential for exposure to contaminants via the indoor air pathway
may be possible, however, that will be assessed during future work at the Site to evaluate SVI.
Groundwater samples from this SI suggest that chlorinated solvent contamination originates
from the former Bradshaw Auto Facility, migrating southward along the hydraulic gradient.
Elevated levels of PCE and TCE were detected throughout the Site. The highest level of TCE in
groundwater was detected at the furthest downgradient sample, potentially indicating that a
former dry-cleaning operation situated at 449 West Center Street may be influencing the
groundwater plume that originated from the former Bradshaw Auto Site. There are numerous
points of diversion downgradient from the Site that may have impacted groundwater. Exposure
to groundwater contamination at the Site is not likely; however, it is possible. The existence of a
groundwater plume also poses soil vapor intrusion issues. Additional groundwater sampling may
be necessary to delineate the southern extent of the groundwater plume.
Soil gas samples collected during the SI detected PCE and TCE above VISLs near the former
Bradshaw Auto Facility and further downgradient. Elevated PCE and TCE levels suggest a risk
of SVI near the Site, potentially extending into residential areas at the southern portion of the
Site. Additional soil gas and indoor air sampling may be necessary to fully assess the extent and
impact of the SVI pathway at the Site.
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This SI concludes that the primary pathway of concern at the Site is the soil vapor intrusion
pathway through the volatilization of chlorinated solvents in shallow groundwater. Most of the
residential and commercial areas in the area appear to have a low risk of exposure via soil vapor
intrusion due to low chlorinated solvent detections in groundwater and soil gas; however, there
may be a risk of exposure to properties on top of or adjacent to areas where detections of
chlorinated solvents were elevated. Chlorinated solvent data fluctuates throughout the year due
to a variety of factors, but data collected during this SI indicates that exposure via the SVI
pathway is possible.
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14.0 REFERENCES
AGRC, 2017; Utah Automated Geographic Reference Center; Groundwater Recharge Discharge Areas
shapefile, SGID10.GEOSCIENCE.Aquifer_RechargeDichargeAreas; accessed in ArcGIS.
ATSDR. 2011a. “ToxFAQs for 1,1-Dichloroethene.” 2011.
https://wwwn.cdc.gov/TSP/ToxFAQs/ToxFAQsDetails.aspx?faqid=721&toxid=130.
———. 2011b. “ToxFAQs for 1,2-Dichloroethene.” 2011.
https://wwwn.cdc.gov/TSP/ToxFAQs/ToxFAQsDetails.aspx?faqid=463&toxid=82.
———. 2014. “ToxFAQs for Vinyl Chloride.” 2014.
https://wwwn.cdc.gov/TSP/ToxFAQs/ToxFAQsDetails.aspx?faqid=281&toxid=51.
———. 2015. “ToxFAQs for Benzene.” 2015.
https://wwwn.cdc.gov/TSP/ToxFAQs/ToxFAQsDetails.aspx?faqid=38&toxid=14.
———. 2020a. “ToxFAQs for Tetrachloroethylene (PERC).” 2020.
https://wwwn.cdc.gov/TSP/ToxFAQs/ToxFAQsDetails.aspx?faqid=264&toxid=48.
———. 2020b. “ToxFAQs for Trichloroethylene (TCE).” 2020.
https://wwwn.cdc.gov/TSP/ToxFAQs/ToxFAQsDetails.aspx?faqid=172&toxid=30.
Federal Emergency Management Agency (FEMA). 2021. “Digital Flood Insurance Rate Map.”
Washington D.C.: Federal Emergency Management Agency.
Minnesota Pollution Control Agency. 2006. “Guidelines: Natural Attenuation of Chlorinated Solvents in
Ground Water,” 51.
NOAA, 2016; National Oceanic and Atmospheric Agency; Point Precipitation Frequency Estimates,
Provo BYU Station; accessed via website http://hdsc.nws.noaa.gov
Swistak, M. 2021. “Preliminary Assessment – Bradshaw Auto” Utah DERR
Swistak, M. 2022. “Site Inspection Work Plan – Bradshaw Auto” Utah DERR
UDNR, 1985; State of Utah Department of Natural Resources; Ground-water Resources of Northern
Utah Valley, Utah, Technical Document 80; Clark, D.W., and C. L. Appel.
U.S. Census Bureau. 2019. “Census Profile: Provo, UT.” Census Reporter, 2019.
http://censusreporter.org/profiles/16000US4962470-provo-ut/.
USDA, 1972; Soil Survey of Utah County, Utah; United States Department of Agriculture/Soil
Conservation Service, Issued January 1972.
U.S. EPA. 1990. “Hazard Ranking System: Final Rule (40 CFR Part 300).” Federal Register 55 51532–
667.
Site Inspection – Analytical Results Report
Bradshaw Auto – UTN00821042
Utah Division of Water Rights. 2021. “Utah Points of Diversion, Utah State Geographic Information
Database (GIS) Layer Name: Utah_Points_of_Diversion-shp.”
FIGURES
!
Figure 1Site Location MapBradshaw Auto44 N 500 WProvo, UT
Prepared By:Michael Swistak Date:
Reference Scale:Map Scale:
1/26/2021
$)
UTN00082104
1:60,000 1 inch = 5,000 feet02,250 4,500 6,750 9,0001,125 Feet
Subject Property
@A
@A@A
@A
@A @A
@A @A
@A
@A
@A
@A
#*
MW1
MW2
MW8MW7
MW6MW5
MW4 MW1A
MW10
MW3
Center Street
Apartment Building
Autoglass Shop
Mountain AmericaCredit Union
Former BradshawAuto Service
Sump
MW11
MW13S MW14
S 500 W St
W 100 N
W 100 S
N 400 W St
Figure 2Detailed Site Location MapBradshaw Auto44 N 500 WProvo, UT
Prepared By:Michael Swistak Date:
Reference Scale:Map Scale:
6/11/2025
$UTN00082104
1:1600 1 inch = 133 feet06012018024030Feet
Legend
@A Monitoring W ell
Former Facility
Subject Property Boundary
#*Suspected Additional Source Area
@A
@A@A
@A
@A @A
@A @A
@A
"J
@A
@A
@A
@A
!(
!(!(
Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA,USGS, AeroGR ID, IGN, and the GIS User Community
Figure 3Groundwater Analytical Results MapBradshaw Auto44 N 500 WProvo, UT
Prepared By:Michael Swistak Date:
Reference Scale:Map Scale:
12/9/2024
$UTN00082104
1:1600 1 inch = 133 feet06012018024030Feet
Legend
!(Temporary Monitoring Well
@A Monitoring Well (sampled)
@A Monitoring Well (not sampled)
"J Deep Monitoring Well
Former Facility
Subject Property Boundary
1,1-Dichl oroethene NDBenzeneNDcis-1,2-Dichl oroethene NDPCENDtrans-1,2-Dichl oroethene NDTCENDVinyl Chloride ND
BA_MW4
1,1-Dichloroe thene 0.17 [J] ug/LBenzeneNDcis-1,2-Dichloroethene 0.21 [J-] ug/LPCENDtrans-1,2-Di chloroe thene 0.13 [J] ug/LTCENDVinyl Chlori de ND
BA_MW5
1,1-Dichloroethene NDBenzeneNDcis-1,2-Di chloroethene NDPCE0.15 [J-] ug/Ltrans-1,2-Di chloroethene NDTCENDVinyl Chlori de ND
BA_MW7
1,1-Dichl oroethene NDBenzeneNDcis-1,2-Dichloroethe ne NDPCE0.29 [J-] ug/Ltrans-1,2-Dichl oroethene NDTCENDVinyl Chloride ND
BA_MW8
1,1-Dichloroethene ND / 0.13 [J] ug/LBenzeneND / ND cis-1,2-Dichloroethene ND / ND PCE 14 [J-] / 270 [J-] ug/Ltrans-1,2-Dichloroethene ND / 0.13 [J] ug/LTCEND / 74 [J-] ug/LVinyl Chloride
BA_MW13S / BA_MW13D
1,1-Dichl oroethene NDBenzeneNDcis-1,2-Dichloroethe ne 0.61 ug/LPCE350 [J-] ug/Ltrans-1,2-Dichl oroethene NDTCE6 [J-] ug/LVinyl Chloride ND
BA_MW14
1,1-Dichloroethene 0.16 [J-] / 0.18 [J-] ug/LBenzeneND / ND ci s-1,2-Dichloroethene ND / ND PCE 78 [J-] / 70 [J-] ug/Ltrans-1,2-Dichloroe thene ND / ND TCE 5.5 [J-] / 5.1 [J-] ug/LVinyl Chloride 0.39[J] / 0.46 [J] ug/L
BA_TW_02 / BA_TW_02DUP 1,1-Di chloroe thene NDBenzeneNDcis-1,2-Dichl oroethene 1.6 ug/LPCE4.3 [J-] ug/Ltrans-1,2-Dichloroethene NDTCE3.1 [J-] ug/LVinyl Chloride ND
BA_TW_04
1,1-Dichloroethene 0.13 [J] ug/LBenzeneNDcis-1,2-Dichloroethe ne 23 ug/LPCE57 [J-] ug/Ltrans-1,2-Dichloroe thene 0.8 ug/LTCE24 [J-] ug/LVinyl Chloride 0.14 [J] ug/L
BA_TW_06
@A
@A@A
@A
@A @A
@A @A
@A
"J
@A
@A
@A
#*
#*
#*#*#*
#*
#*
#*
MW1
MW2
MW8MW7
MW6MW5
MW4 MW1A
MW10
MW3
Center Street
Apartment Building
Autoglass Shop
Mountain AmericaCredit Union
Former BradshawAuto Service
Sump
MW11
MW13S MW14
S
5
0
0

W

S
t
W 100 N
W 100 S
N
4
0
0

W

S
t
Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA,USGS, AeroGRID, IGN, and the GIS User Community
Figure 4Soil Gas Analytical Results MapBradshaw Auto44 N 500 WProvo, UT
Prepared By:Michael Swistak Date:
Reference Scale:Map Scale:
6/11/2025
$UTN00082104
1:1600 1 inch = 133 feet06012018024030Feet
1,1-Dichloroethene NDBenzene11 ug/m3cis-1,2-Dichloroethene NDPCE6.1 ug/m3trans-1,2-Dichloroethene NDTCENDVinyl Chloride ND
BA_SG_01
1,1-Dichloroethene NDBenzene7.1 ug/m3cis-1,2-Dichloroethene NDPCE220 ug/m3trans-1,2-Dichloroethene NDTCE3.5Vinyl Chloride ND
BA_SG_04
1,1-Dichloroethene NDBenzene36 ug/m3cis-1,2-Dichloroethene NDPCE57 ug/m3trans-1,2-Dichloroethene NDTCE0.64 [J] ug/m3Vinyl Chloride 2.2 [J] ug/m3
BA_SG_05
1,1-Dichloroethene NDBenzene27 ug/m3cis-1,2-Dichloroethene 2.4 [J] ug/m3PCE720 ug/m3trans-1,2-Dichloroethene 0.73 [J] ug/m3TCE410 ug/m3Vinyl Chloride 0.75 [J] ug/m3
BA_SG_06
1,1-Dichloroethene ND / NDBenzene3.3 [J] ug/m3 / 2.3 [J]ug/m3cis-1,2-Dichloroethene ND / NDPCE250 [J] ug/m3 / 110 [J] ug/m3trans-1,2-Dichloroethene ND / NDTCE6.5 [J] ug/m3 / 3.3 [J] ug/m3Vinyl Chloride ND / ND
BA_SG_02 / BA_SG_02DUP
1,1-Dichloroethene NDBenzene46 ug/m3cis-1,2-Dichloroethene NDPCE3,700 ug/m3trans-1,2-Dichloroethene NDTCE0.69 [J] ug/m3Vinyl Chloride 1.2 [J] ug/m3
BA_SG_08
1,1-Dichloroethene NDBenzene34 ug/m3cis-1,2-Dichloroethene NDPCE100 ug/m3trans-1,2-Dichloroethene NDTCENDVinyl Chloride 1.3 [J] ug/m3
BA_SG_09
1,1-Dichloroethene NDBenzene27 ug/m3cis-1,2-Dichloroethene NDPCE3.7 ug/m3trans-1,2-Dichloroethene NDTCENDVinyl Chloride 0.96 [J]
BA_SG_Background
Legend
#*Soil Gas Sample Locations
@A Monitoring Well (sampled)
@A Monitoring Well (not sampled)
Former Facility
Subject Property Boundary
Former Furniture Store
TABLES
FieldSample No.
BA_SG_01 Soil Gas Summa Canister Right of Way Identify exposure concentration
BA_SG_02 Soil Gas Summa Canister Right of Way Identify exposure concentration
BA_SG_02DUP Soil Gas Summa Canister Right of Way Identify exposure concentration Field Duplicate
BA_SG_03 Soil Gas Summa Canister Right of Way Identify exposure concentration
BA_SG_04 Soil Gas Summa Canister Right of Way Identify exposure concentration
BA_SG_05 Soil Gas Summa Canister Right of Way Identify exposure concentration Lab Duplicate
BA_SG_06 Soil Gas Summa Canister Right of Way Identify exposure concentration
BA_SG_07 Soil Gas Summa Canister Apartment Building Identify exposure concentration
BA_SG_08 Soil Gas Summa Canister Pioneer Book Store Identify exposure concentration
BA_SG_09 Soil Gas Summa Canister Rent-A-Center (Right of Way)Identify exposure concentration
BA_SG_Background Soil Gas Summa Canister Right of Way Background Sample
BA_TW_01 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_TW_02 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_TW_02DUP Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration Field Duplicate
BA_TW_03 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_TW_04 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_TW_05 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration Lab Duplicate
BA_TW_06 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_TW_Background Groundwater 40 mL Amber Glass Vial Right of Way Background Sample
BA_MW2 Groundwater 40 mL Amber Glass Vial Bradshaw Auto Identify exposure concentration
BA_MW4 Groundwater 40 mL Amber Glass Vial Royal Nails Identify exposure concentration
BA_MW5 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_MW5DUP Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration Field Duplicate
BA_MW7 Groundwater 40 mL Amber Glass Vial Rent-A-Center (Right of Way)Identify exposure concentration
BA_MW8 Groundwater 40 mL Amber Glass Vial Apartment Building Identify exposure concentration
BA_MW10 Groundwater 40 mL Amber Glass Vial Alley (Provo City Corp.)Identify exposure concentration
BA_MW11 Groundwater 40 mL Amber Glass Vial Apartment Building Identify exposure concentration
BA_MW13S Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_MW14 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_MW14DUP Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration Field Duplicate
QA/QC
Table 1
Sample Collection Summary
Bradshaw Auto
Matrix Container¹Location Rationale
Bradshaw Auto SI Sampling Support
2083‐2303‐07
Table 2
Analytical Results ‐ Groundwater (validated)
4
CAS No.EPA MCLa
1,1,1‐Trichloroethane 71‐55‐6 200 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,1,2,2‐Tetrachloroethane 79‐34‐5 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,1,2‐Trichloro‐1,2,2‐trifluoroethane 76‐13‐1 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,1,2‐Trichloroethane 79‐00‐5 5.0 0.50 U 0.11 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,1‐Dichloroethane 75‐34‐3 NE 0.50 U 0.11 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,1‐Dichloroethene 75‐35‐4 7.0 0.50 U 0.17 J 0.50 U 0.50 U 0.50 U 0.13 J 0.50 U 0.16 J 0.18 J 0.50 U 0.13 J
1,2,3‐Trichlorobenzene 87‐61‐6 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2,3‐Trichloropropane 96‐18‐4 NE 0.50 U 0.16 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2,4‐trichlorobenzene 120‐82‐1 70 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2,4‐Trimethylbenzene 95‐63‐6 NE 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
1,2‐Dibromo‐3‐chloropropane 96‐12‐8 0.20 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2‐Dibromoethane 106‐93‐4 0.05 0.50 U 0.11 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2‐Dichlorobenzene 95‐50‐1 600 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2‐Dichloroethane 107‐06‐2 5.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2‐Dichloropropane 78‐87‐5 5.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,3,5‐Trimethylbenzene 108‐67‐8 NE 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
1,3‐Dichlorobenzene 541‐73‐1 NE 0.50 U 0.12 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,4‐Dichlorobenzene 106‐46‐7 75 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
2‐Butanone 78‐93‐3 NE 5.0 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U
2‐Hexanone 591‐78‐6 NE 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U
4‐Methyl‐2‐pentanone 108‐10‐1 NE 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U
Acetone 67‐64‐1 NE 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U
Benzene 71‐43‐2 5.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Bromochloromethane 74‐97‐5 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Bromodichloromethane 75‐27‐4 80 0.50 U 0.14 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Bromoform 75‐25‐2 80 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Bromomethane 74‐83‐9 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Carbon disulfide 75‐15‐0 NE 0.50 UJ 0.13 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.71 0.28 J 0.27 J 0.42 J
Carbon tetrachloride 56‐23‐5 5.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Chlorobenzene 108‐90‐7 100 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Chloroethane 75‐00‐3 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Chloroform 67‐66‐3 80 0.50 U 0.95 0.61 0.46 J 0.90 0.50 U 0.66 0.50 U 0.50 U 0.50 U 0.42 J
Chloromethane 74‐87‐3 NE 0.99 J 0.66 J+ 0.50 U 0.58 J+ 0.50 U 0.76 J+ 0.61 J+ 0.58 J+ 0.50 U 0.50 U 0.51 J+
cis‐1,2‐Dichloroethene 156‐59‐2 70 0.50 U 0.12 J 0.50 U 0.50 U 0.50 U 7.00 0.61 0.50 U 0.50 U 1.6 23
cis‐1,3‐Dichloropropene 10061‐01‐5 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Cyclohexane 110‐82‐7 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Dibromochloromethane 124‐48‐1 80 0.50 U 0.13 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Dichlorodifluoromethane 75‐71‐8 NE 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Ethylbenzene 100‐41‐4 700 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
Isopropylbenzene 98‐82‐8 NE 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
m,p‐Xylene 179601‐23‐1 NE 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.16 J‐0.50 UJ
Methyl acetate 79‐20‐9 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Methyl tert‐butyl Ether 1634‐04‐4 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Methylcyclohexane 108‐87‐2 NE 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
6/29/20236/29/20236/29/20236/28/20236/28/2023
H0FA8
BA_MW5
CLP Sample ID
Field Sample ID
H0FA7
BA_MW4
TD (ft. bgs.)1539
Analyte
Sample Date 6/28/2023
BA_MW14
H0FB3
BA_TW_02
H0FB0
BA_MW7
H0FC1
BA_MW13D
H0FA3
BA_MW13S
19.2
6/29/2023
BA_TW_06
H0FC3
DTW (ft. bgs.)10.211.310.29.410.1 10.9
H0FB4
BA_TW_02DUP
H0FB6
BA_TW_04
H0FB1
BA_MW8
H0FA4
2525.3517.1513.5 20252520.3
6/28/20236/28/20236/29/20236/28/2023
14.514.5141410.5
Table from Appendix D.
Bradshaw Auto SI Sampling Support
2083‐2303‐07
Table 2
Analytical Results ‐ Groundwater (validated)
5
CAS No.EPA MCLa
6/29/20236/29/20236/29/20236/28/20236/28/2023
H0FA8
BA_MW5
CLP Sample ID
Field Sample ID
H0FA7
BA_MW4
TD (ft. bgs.)1539
Analyte
Sample Date 6/28/2023
BA_MW14
H0FB3
BA_TW_02
H0FB0
BA_MW7
H0FC1
BA_MW13D
H0FA3
BA_MW13S
19.2
6/29/2023
BA_TW_06
H0FC3
DTW (ft. bgs.)10.211.310.29.410.1 10.9
H0FB4
BA_TW_02DUP
H0FB6
BA_TW_04
H0FB1
BA_MW8
H0FA4
2525.3517.1513.5 20252520.3
6/28/20236/28/20236/29/20236/28/2023
14.514.5141410.5
Methylene chloride 75‐09‐2 5.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
o‐Xylene 95‐47‐6 NE 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
Styrene 100‐42‐5 100 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
Tetrachloroethene 127‐18‐4 5.0 0.50 UJ 0.21 J‐0.15 J‐0.29 J‐14 J‐270 J‐350 J‐78 J‐70 J‐4.3 J‐5.7 J‐
Toluene 108‐88‐3 1,000 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.23 J‐0.17 J‐
trans‐1,2‐Dichloroethene 156‐60‐5 100 0.50 U 0.13 J 0.50 U 0.50 U 0.50 U 0.13 J 0.50 U 0.50 U 0.50 U 0.50 U 0.80
trans‐1,3‐Dichloropropene 10061‐02‐6 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Trichloroethene 79‐01‐6 5.0 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 74 J‐6 J‐5.5 J‐5.1 J‐3.1 J‐24 J‐
Trichlorofluoromethane 75‐69‐4 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Vinyl chloride 75‐01‐4 2.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.39 J 0.46 J 0.50 U 0.14 J
Notes:Results reported in micrograms per liter (µg/L)
a EPA Maximum Contaminant Level (TR=1E‐06, THQ=1.0)
BOLD Exceeds EPA MCL
U The analyte was analyzed for, but was not detected at or above the associated value (reporting limit)
UJ The analyte was analyzed for, but was not detected at or above the associated value (repor ng limit), which is considered approximate due to deficiencies in one or more quality control criteria
J The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample
J‐The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be biased low
NE Not Established
DTW Depth to Water
TD Total Depth
ft. bgs. Feet below ground surface
CAS No. Chemical Abstracts Service Number
CLP Contract Laboratory Program
EPA U.S. Environmental Protection Agency
Table from Appendix D.
Bradshaw Auto SI Sampling Support
2083‐2303‐07
Table 3
Analytical Results ‐ Soil Gas
2
CAS No.
EPA 
Residential 
VISLa
EPA 
Commercial 
VISLb
1,1,1‐Trichloroethane 71‐55‐6 174,000 730,000 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 U 2.8 U 2.8 U
1,1,2,2‐Tetrachloroethane 79‐34‐5 1.6 7.1 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 U 2.8 U 2.8 U
1,1,2‐Trichloroethane 79‐00‐5 5.9 26 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 U 2.8 U 2.8 U
1,1,2‐Trichlorotrifluoroethane 76‐13‐1 174,000 730,000 0.52 J 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 0.45 J 2.9 U 0.52 J
1,1‐Dichloroethane 75‐34‐3 59 256 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
1,1‐Dichloroethene 75‐35‐4 6,950 29,200 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
1,2,4‐Trichlorobenzene 120‐82‐1 70 292 5.4 U 6.8 U 5.3 U 5.9 U 5.9 U 5.4 U 5.4 UJ 5.9 UJ 5.8 U
1,2,4‐Trimethylbenzene 95‐63‐6 2,090 8,760 16 1.9 J 1.6 J 11 4.7 11 16 11 17
1,2‐Dibromoethane 106‐93‐4 0.16 0.68 2.6 U 3.2 U 2.5 U 2.8 U 2.8 U 2.5 U 2.6 U 2.8 U 2.7 U
1,2‐Dichloro‐1,1,2,2‐tetrafluoroethane (CFC 114)76‐14‐2 NE NE 2.6 U 3.2 U 2.5 U 2.8 U 2.8 U 2.5 U 2.6 UJ 2.8 UJ 2.7 U
1,2‐Dichlorobenzene 95‐50‐1 6,950 29,200 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 UJ 2.9 UJ 2.8 U
1,2‐Dichloroethane 107‐06‐2 3.6 16 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
1,2‐Dichloropropane 78‐87‐5 25 110 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 U 2.8 U 2.8 U
1,3,5‐Trimethylbenzene 108‐67‐8 2,090 8,760 5.0 3.3 U 2.6 U 3.4 1.6 J 3.6 4.5 2.6 J 5.4
1,3‐Butadiene 106‐99‐0 3.1 14 12 1.3 J 0.77 J 7.5 180 29 17 20 47
1,3‐Dichlorobenzene 541‐73‐1 NE NE 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 UJ 2.8 UJ 2.8 U
1,4‐Dichlorobenzene 106‐46‐7 8.5 37 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 UJ 2.8 UJ 2.8 U
1,4‐Dioxane 123‐91‐1 19 82 2.6 U 3.3 U 2.6 U 0.45 J 2.8 U 2.6 U 1.7 J 2.8 U 2.8 U
2‐Butanone (MEK)78‐93‐3 174,000 730,000 15 5.9 J 4.6 J 27 25 56 57 33 40
2‐Hexanone 591‐78‐6 1,040 4,380 6.7 0.92 J 1.0 J 7.0 5.9 U 6.8 10 9.2 7.0
2‐Propanol (Isopropyl Alcohol)67‐63‐0 6,950 29,200 27 1.9 J 3.0 J 37 10 31 35 24 28
4‐Ethyltoluene 622‐96‐8 NE NE 4.5 3.4 U 0.42 J 2.7 J 1.5 J 3.1 3.8 3.4 4.9
4‐Methyl‐2‐pentanone 108‐10‐1 104,000 438,000 15 1.1 J 0.74 J 14 14 13 14 25 11
Acetone 67‐64‐1 NE NE 150 65 53 200 150 360 370 190 280
Benzene 71‐43‐2 12 52 11 3.3 J 2.3 J 7.1 36 27 46 34 27
Benzyl Chloride 100‐44‐7 1.9 8.3 10 UJ 13 UJ 10 UJ 11 UJ 11 UJ 10 UJ 10 U 11 U 11 UJ
Bromodichloromethane 75‐27‐4 2.5 11 2.7 U 0.64 J 0.40 J 2.9 U 2.9 U 2.6 U 2.7 U 0.93 J 2.8 U
Bromoform 75‐25‐2 85 372 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
Bromomethane 74‐83‐9 174 730 2.5 U 3.1 U 2.5 U 0.44 J 2.7 U 2.5 U 2.5 U 0.63 J 1.9 J
Carbon Disulfide 75‐15‐0 24,300 102,000 13 7.7 8.1 13 20 20 29 29 21
Carbon Tetrachloride 56‐23‐5 16 68 2.6 U 3.2 U 2.5 U 2.8 U 2.8 U 2.5 U 2.6 U 2.8 U 2.7 U
Chlorobenzene 108‐90‐7 1,740 7,300 1.2 J 3.3 U 2.6 U 0.43 J 0.49 J 0.46 J 0.58 J‐2.8 UJ 1.4 J
Chloroethane 75‐00‐3 139,000 584,000 0.49 J 3.2 U 2.5 U 2.8 U 0.54 J 0.40 J 2.6 U 1.3 J 0.74 J
Chloroform 67‐66‐3 4.1 18 5.0 22 J 12 J 9.5 3.7 12 2.6 U 0.54 J 8.9
Chloromethane 74‐87‐3 3,130 13,100 1.5 J 1.0 J 0.77 J 2.8 U 7.2 5.9 3.1 5.9 3.5
cis‐1,2‐Dichloroethene 156‐59‐2 1,390 5,840 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.4 J 2.6 U 2.8 U 2.8 U
cis‐1,3‐Dichloropropene 10061‐01‐5 23 102 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
Cumene 98‐82‐8 13,900 58,400 1.6 J 3.3 U 2.6 U 0.93 J 0.66 J 1.2 J 1.5 J 0.73 J 2.4 J
Cyclohexane 110‐82‐7 209,000 876,000 2.5 J 6.5 U 5.1 U 1.5 J 5.6 J 8.1 15 3.4 J 9.4
Dibromochloromethane 124‐48‐1 NE NE 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
Dichlorodifluoromethane (CFC 12)75‐71‐8 3,480 14,600 2.0 J 1.6 J 1.8 J 1.8 J 1.4 J 1.8 J 2.1 J 3.7 1.8 J
Dichloromethane (Methylene Chloride)75‐09‐2 3,380 40,900 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 U 2.8 U 2.8 U
Ethyl Acetate 141‐78‐6 2,430 10,200 15 13 U 4.0 J 20 11 U 38 56 8.8 J 8.6 J
Ethylbenzene 100‐41‐4 37 164 5.1 1.9 J 1.2 J 3.1 4.6 6.4 5.1 6.7 17
Hexachlorobutadiene 87‐68‐3 4.3 19 2.6 UJ 3.3 UJ 2.6 UJ 2.9 UJ 2.8 UJ 2.6 UJ 2.6 UJ 2.8 UJ 2.8 UJ
Hexane 110‐54‐3 24,300 102,000 8.3 1.6 J 1.5 J 4.8 340 34 24 17 32
m,p‐Xylenes 179601‐23‐1 3,480 14,600 17 9.6 5.8 9.4 9.5 18 18 17 59
Methyl tert‐Butyl Ether 1634‐04‐4 360 1,570 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
Sample Date 6/27/20236/27/20236/27/20236/27/20236/27/20236/27/20236/28/20236/28/20236/27/2023
BA_SG_06 BA_SG_08 BA_SG_09 BA_SG_BACKGROUNDField Sample ID BA_SG_01 BA_SG_02 BA_SG_02DUP BA_SG_04 BA_SG_05
Analyte
Table from Appendix D.
Bradshaw Auto SI Sampling Support
2083‐2303‐07
Table 3
Analytical Results ‐ Soil Gas
3
CAS No.
EPA 
Residential 
VISLa
EPA 
Commercial 
VISLb
Sample Date 6/27/20236/27/20236/27/20236/27/20236/27/20236/27/20236/28/20236/28/20236/27/2023
BA_SG_06 BA_SG_08 BA_SG_09 BA_SG_BACKGROUNDField Sample ID BA_SG_01 BA_SG_02 BA_SG_02DUP BA_SG_04 BA_SG_05
Analyte
Naphthalene 91‐20‐3 2.8 12 0.69 J 3.4 U 2.7 U 0.84 J 2.9 U 2.7 U 0.66 J‐1.6 J‐0.99 J
n‐Heptane 142‐82‐5 13,900 58,400 5.7 3.3 U 0.54 J 3.8 180 26 9.6 12 19
o‐Xylene 95‐47‐6 3,480 14,600 6.7 3.8 2.2 J 4.0 4.1 6.6 7.4 6.3 21
Propene 115‐07‐1 104,000 438,000 78 24 J 14 J 34 1,300 130 290 160 410
Styrene 100‐42‐5 34,800 146,000 6.3 0.62 J 2.6 U 3.5 2.9 5.6 6.4 7.6 8.6
Tetrachloroethene 127‐18‐4 360 1,570 6.1 250 J 110 J 220 57 720 3,700 100 3.7
Tetrahydrofuran (THF)109‐99‐9 69,500 292,000 7.0 1.6 J 1.1 J 6.7 5.4 U 6.7 8.3 2.4 J 5.3
Toluene 108‐88‐3 174,000 730,000 29 4.1 3.5 15 27 40 39 28 39
trans‐1,2‐Dichloroethene 156‐60‐5 1,390 5,840 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 0.73 J 2.7 U 2.9 U 2.8 U
trans‐1,3‐Dichloropropene 10061‐02‐6 23 102 2.5 U 3.1 U 2.5 U 2.8 U 2.7 U 2.5 U 2.5 U 2.7 U 2.7 U
Trichloroethene 79‐01‐6 16 100 2.6 U 6.5 J 3.3 J 3.5 0.64 J 410 0.69 J 2.8 U 2.8 U
Trichlorofluoromethane 75‐69‐4 NE NE 1.5 J 0.93 J 0.92 J 1.5 J 0.82 J 1.3 J 1.7 J 2.7 J 0.93 J
Vinyl Acetate 108‐05‐4 6,950 29,200 25 U 31 U 24 U 27 U 27 U 25 U 25 U 27 U 26 U
Vinyl Chloride 75‐01‐4 5.6 93 2.5 U 3.1 U 2.5 U 2.8 U 2.2 J 0.75 J 1.2 J 1.3 J 0.96 J
Notes:Results reported in micrograms per cubic meter (µg/m3)
a EPA Residential Target Sub‐Slab and Near‐source Soil Gas Concentration (TR=1E‐06, THQ=1.0)
b EPA Commercial Target Sub‐Slab and Near‐source Soil Gas Concentration (TR=1E‐06, THQ=1.0)
BOLD Exceeds EPA RSL for Residential Air
BOLD Exceeds EPA RSL for both Residential and Industrial Air 
U The analyte was analyzed for, but was not detected at or above the associated value (reporting limit)
UJ The analyte was analyzed for, but was not detected at or above the associated value (repor ng limit), which is considered approximate due to deficiencies in one or more quality control criteria
J The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample
J‐The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be biased low
NE Not Established
CAS No. Chemical Abstracts Service Number
EPA U.S. Environmental Protection Agency
VISL Vapor Intrusion Screening Level
Table from Appendix D.
Table 4: Data Quality Concerns, Adjustments, and Qualifications
Sample Type Data Concern Analytes Data Adjustment/Qualifier
Soil Gas Samples
Soil Gas Samples
Soil Gas Samples
1,2-dichloro-1,1,2,2-tetrafluoroethane (CFC 114),
chlorobenzene, 1,3-dichlorobenzene, 1,4-
dichlorobenzene, 1,2-dichlorobenzene, 1,2,4-
trichlorobenzene, naphthalene, and
Soil Gas Samples
Soil Gas Samples
Water Samples
Nondetects qualified as U. Detects
Water Samples
1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene,
ethylbenzene, isopropylbenzene, m,p-xylene, o-
xylene,
tetrachloroethene, trichloroethene, toluene, and Nondetects qualified as UJ. Detects
Water Samples
Table 5
Data Quality Objectives
Bradshaw Auto
Problem Statement Identifying the
Decisions Decision Inputs Study Boundaries Decision Rules
Tolerance
Limits on
Errors
Optimization
of Sample
Design
Previous studies at the Bradshaw Auto Site have identified chlorinated solvents and petroleum hydrocarbons in groundwater, soil, and indoor air around the Site as a result of operations at the former facility. Remedial actions were conducted on Site as part of the Voluntary Cleanup Program (VCP); however, contamination may have migrated off Site and this was never addressed. Workers at nearby businesses may be exposed to hazardous indoor air concentrations due to subsurface vapor intrusion. Groundwater may have migrated downgradient, potentially impacting more businesses to soil vapor intrusion.
There are three principal study questions for the site: (1) Are soil vapors near properties presenting a threat of vapor intrusion? (2) Is groundwatercontaminationmigrating off Site?(3) Is furthersampling necessary to evaluate the extent of contamination and exposure targets?
Laboratory analytical data for groundwater and vapor intrusion samples will be collected to determine the potential extent of impacts to the Site and if contaminants are migrating off-site.
Comparison of analytical results against the EPA Superfund Chemical Data Matrix (SCDM) Benchmarks (Reference Dose and Cancer Risk) will be used when available (Regional Screening Levels (RSLs)).
The Site is located in downtown Provo, Utah, in a commercial business area surrounded by residential homes. Human health is the primary target of interest related to the Site. The former Bradshaw Auto automotive service facility is the source of contamination during this SI. Residential and commercial properties located near the source of contamination will be investigated to assess the risk to human health.
If contaminants are detected in indoor air, soil gas, or groundwater, samples at concentrations above SCDM values, then further evaluation of the extent of contamination would be warranted.
Judgmental sampling will be used to bias samples toward more potentially contaminated areas or areas that require further characterization.
Detection limits utilized by the laboratory are the EPA Method Detection Limit (MDL) procedures found in Title 40 Code of Federal Regulations (CFR) Parts 403.12 and136.
Groundwater, soil gas, and indoor air sample locations will be determined prior to the start of field work.
Proposed sample locations may be changed in the field due to utility locations, on-Site debris, construction activities, and remaining structures.

APPENDIX A
Bradshaw Auto Site Inspection Work Plan

SITE INSPECTION WORK PLAN

Bradshaw Auto
Utah County, Utah
UTN000821042

December, 2022

SITE INSPECTION WORK PLAN

Bradshaw Auto
Utah County, Utah
UTN000821042

Utah Department of Environmental Quality
Division of Environmental Response and Remediation

Prepared by: Michael Swistak

Approved: _______________________________________ Date: ______
Michael Swistak, UDEQ Project Manager
Approved: _______________________________________ Date: ______
Tom Daniels, UDEQ Site Assessment Section Manager
Approved: _______________________________________ Date: ______
Ryan Dunham, Site Assessment Manager, EPA Region 8

TABLE OF CONTENTS
1.0 INTRODUCTION ............................................................................................................ 1
2.0 OBJECTIVES ................................................................................................................. 1
3.0 BACKGROUND INFORMATION ................................................................................... 1
3.1 SITE LOCATION 1
3.2 SITE HISTORY AND PREVIOUS INVESTIGATIONS 2
3.3 PHYSICAL CONDITIONS 3 3.3.1 HYDROGEOLOGY .................................................................................................... 3 3.3.2 HYDROLOGY ........................................................................................................... 4 3.3.3 GEOLOGY ................................................................................................................ 4 3.3.4 METEOROLOGY ...................................................................................................... 5
4.0 PRELIMINARY PATHWAY ANALYSIS ......................................................................... 5
4.1 WASTE SOURCE CHARACTERIZATION 5
4.2 SOIL EXPOSURE PATHWAY ANALYSIS 6
4.3 SOIL VAPOR INTRUSION PATHWAY 6
4.4 GROUNDWATER EXPOSURE PATHWAY ANALYSIS 7
4.5 SURFACE WATER PATHWAY ANALYSIS 7
4.6 AIR EXPOSURE PATHWAY ANALYSIS 8
5.0 FIELD PROCEDURES ................................................................................................... 8
5.1 CONCEPT OF OPERATIONS 8 5.1.1 Schedule................................................................................................................. 8 5.1.2 SAFETY ................................................................................................................. 9 5.1.3 SITE ACCESS AND LOGISTICS ............................................................................ 9
5.2 SAMPLE LOCATIONS 9
5.3 SAMPLING METHODS 10 5.3.1 SOIL GAS SAMPLE COLLECTION AND ANALYSIS ...............................................10 5.3.2 GROUNDWATER SAMPLE COLLECTION AND ANALYSIS ...................................10
5.4 INVESTIGATION DERIVED WASTE 11
6.0 FIELD QUALITY CONTROL AND ASSURANCE PROCEDURE .................................11
7.0 CHAIN OF CUSTODY ...................................................................................................12
8.0 DATA REDUCTION, VALIDATION, AND REPORTING ...............................................12
9.0 REFERENCES ..............................................................................................................13

LIST OF FIGURES, TABLES AND APPENDICES
FIGURES:
Figure 1: Site Location Map
Figure 2: Site Map
Figure 3: Shallow Groundwater PCE Distribution Map (July 31, 2001)
Figure 4: Proposed Sample Location Map

TABLES:
Table 1: Conceptual Site Model
Table 2: Data Quality Objectives
Table 3: Sample Collection Summary
Table 4: Sample Analysis Checklist

APPENDICES:
Appendix A: Site Health and Safety Plan
Appendix B: Consent for Access to Property Form

Site Investigation Work Plan
Bradshaw Auto – UTN000821042 1

Under authority of the Comprehensive Environmental Response, Compensation and Liability
Act (CERCLA) of 1980, the Superfund Amendments and Reauthorization Act (SARA) of 1986,
and in accordance with the National Oil and Hazardous Substances Pollution Contingency Plan
(NCP), the Utah Department of Environmental Quality (UDEQ), Division of Environmental
Response and Remediation (DERR) has prepared this work plan as part of a Site Inspection
(SI) of Bradshaw Auto (SEMS EPA ID number UTN000821042) (herein referred to as the
“Site”) in Provo, Utah County, Utah. This SI will be conducted under a cooperative agreement
between the DERR and the United States Environmental Protection Agency, Region 8 (EPA).
This Work Plan describes sampling procedures that will be used to identify Site contaminants
and potential impacts to nearby business users. The DERR completed a Preliminary Assessment
(PA) for the Site in August 2021.
The findings outlined in the subsequent report will provide information to help support decisions
regarding the need for further action at the Site. The specific objectives of this SI are to:

● Collect additional Site information, including sampling data necessary to
determine if contamination is present in soil gas and groundwater.
● Identify the levels of contamination in groundwater and soil gas near businesses
and homes that are proximal to known source areas.
● Identify potential targets that may be affected by Site contamination, as well as
other targets that may be impacted by the migration of the contamination via the
suspected exposure pathways.
● Determine if continued assessment work under CERCLA or other authority is
warranted.
3.1 SITE LOCATION
The Site is located in the east central portion of the Utah Lake Valley, SW ¼ , Section 1,
Township 7S, Range 2E, Salt Lake Base Meridian (Figure 1). The Site's latitude and longitude is
40°14'3.69"N and 111°40'0.08"W. The Site is located in the central portion of the city block,
northeast of the 500 West and Center Street intersection in Provo, Utah. The area surrounding
the Site is primarily commercial. Adjacent properties to the Site include an apartment building to
the east, a Mountain America Credit Union to the north, an Autoglass store and Self Help
building to the northeast, a Fresh Market grocery store to the west across from 500 West, and a
series of small businesses located in historic buildings located on the north side of Center Street.
The adjacent properties surrounding the Site are presented in Figure 2. During a Site visit in
March of 2021, it was noted that an ongoing construction project was present downgradient
(south) of the Site (Swistak, 2021).
1.0 INTRODUCTION

BACKGROUND

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Bradshaw Auto – UTN000821042 2

3 .2 SITE HISTOR Y AND PREVIOUS INVES TIGATIONS
Provo Foundry and Machine Company first purchased the property in 1919 and operated until
1922. In 1922, Superior Motor Company purchased the property and operated until 1946. In
1950, a new building was constructed in which Bradshaw Auto operated. In 1971 the Bradshaw
Investment Corporation purchased the property via a Warranty Deed from the Provo City
Corporation and operated an automotive service facility for approximately 20 years. Since then,
the building has been demolished and the Site is vacant.
Chlorinated solvents and petroleum hydrocarbons were released at the Site through a sump drain
located within the former auto service building. Over many years, spent solvents from their
operations were discharged into this sump, which was located on the south side of the property.
The sump was made from masonry blocks that were not cemented together with mortar, and was
not connected to the local sanitary sewer system. In 1995 and 1996 Wasatch Environmental
decommissioned the sump and historic storm water drainage system at the Site during an
excavation.
The property was purchased by First Interstate Bank of Utah., which subsequently merged with
Wells Fargo Bank of Utah. Wells Fargo held the title to the property in trust to various
beneficiaries from 1987 to 2003. Wells Fargo retained the services of Wasatch Environmental as
part of joining the Voluntary Cleanup Program (VCP) in 1997. Work performed as a part of the
VCP included the installation of monitoring wells, groundwater sampling, indoor and outdoor air
sampling, soil sampling, installation of a density driven convection (DDC) remediation system,
and a soil excavation of the Bradshaw Auto property. In 2003 a new part-owner of the property,
Drukman Properties LLC, was brought into the VCP agreement for the Site. A closure plan was
never completed and the VCP agreement for the Site was terminated in 2014 due to limited
resources from the property owner (UDEQ, 2014). Wasatch Environmental submitted the
following reports as part of the VCP:
● Phase I Environmental Site Assessment (May, 1995).
● Report of Liquid and Sludge Removal/Disposal, Decommissioning of the Sump and
Drain System, and Limited Subsurface Investigation (February, 1996).
● Report of Additional Subsurface Investigation (July, 1996).
● Voluntary Cleanup Program Application (October, 1996).
● Groundwater Monitoring Report (November, 1996).
● Groundwater Monitoring Report (September, 1997).
● Addendum Letter to Voluntary Cleanup Application (November, 1997).
● Groundwater Monitoring Report (June, 1999).

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Bradshaw Auto – UTN000821042 3

● Installation of Density Driven Convection (DDC) Remediation System (2000).
● Final Corrective Action Plan (December, 2000)
● Groundwater Monitoring Report (July, 2001).
● Ambient Air Sampling Provo Furniture Store Report (January, 2002)
● Groundwater Monitoring Report (May, 2002).
● DDC System Shut Down (July, 2002).
● Remediation Air Sampling Report (October, 2002).
These previous studies identified tetrachloroethene (PCE), trichloroethene (TCE), cis-1,2-
dichloroethene (cis-1,2-DCE), vinyl chloride (VC), naphthalene, and other compounds within
groundwater samples (Swistak, 2021). Notably, the 1996 Wasatch Environmental Report of
Additional Subsurface Investigation identified TCE within groundwater at a concentration of
31,000 µg/L, which is much higher than the EPA Maximum Contaminant Level (MCL; 5 µg/L)
for drinking water (Wasatch Environmental, 1997). PCE was also detected above its MCL (5
µg/L) at an elevated value of 28,000 µg/L during a subsequent groundwater sampling event
conducted by Wasatch Environmental in 1999 (Swistak, 2021). Cis-1,2-DCE, vinyl chloride, and
trans-1,2-DCE were also detected at levels above respective MCLs (cis 1,2-DCE MCL: 70 µg/L,
vinyl chloride MCL: 2 µg/L, trans-1,2-DCE MCL: 100 µg/L) at several sampling locations over
multiple sampling events (Swistak, 2021). Ambient air samples taken downgradient from the
contaminant source outside the former Provo Furniture Store detected numerous contaminants;
however, none of them exceeded commercial RSLs (Swistak, 2021). Cleanup of the on-Site
contaminants met cleanup standards and further remedial action was no longer pursued;
however, contaminants have migrated off-Site and the extent of contamination has not been fully
investigated.
3.3 PHYSICAL CONDITIONS
3 .3.1 HYDROGEOLOGY
The principal groundwater reservoir is composed of three confined aquifers: a shallow
artesian aquifer in deposits of Pleistocene age, a deep artesian aquifer in the deposits of
Pleistocene age, and an artesian aquifer in deposits of Tertiary and Quaternary age. The aquifers
typically are separated by confining beds which vary in thickness. These confining beds usually
cause a substantial difference in the hydrostatic pressure between aquifers resulting in vertical
movement of water from one aquifer to another. The shallow artesian aquifer ranges in thickness
from 10 to 150 feet and is thickest towards the mountains and thinnest near Utah Lake. This
aquifer and the deep artesian aquifer in the deposits of Pleistocene age are separated by a
confining layer 20 to 200 feet thick. The deep artesian aquifer generally includes more than one
water-bearing zone separated by fine-grained material. The total thickness of the aquifer ranges
from 50 to 200 feet. The artesian aquifer in deposits of Tertiary and Quaternary age includes

Site Investigation Work Plan
Bradshaw Auto – UTN000821042 4

several water-bearing zones and confining layers. This aquifer has been penetrated by few
groundwater wells but is generally assumed to be at least 600 feet thick and consists of layers of
semi-consolidated materials (UDNR 1985).
The Site is located in an area of groundwater discharge; indicating the general flow
of groundwater is upwards towards the surface and entering into surface water bodies
(AGRC 2017a). The groundwater flow direction at the Site is assumed to follow the
general topography and flow to the southwest towards Provo Bay. Depth to
groundwater at the Site is approximately 12 feet bgs (Wasatch Environmental, 1999).
3 .3.2 HYDROLOGY
The topography at the Site is relatively flat with a gentle slope from the northeast to
the southwest toward present-day Utah Lake. The surface water flow reflects this trend as it
locally flows from the northeast to the southwest. (USGS 1975). The nearest perennial surface
water is the Provo River located approximately 4,500 feet northwest of the Site. From here the
Provo River flows approximately 4 miles into Utah Lake.
The surface water bodies nearest the Site are Provo Bay and Utah Lake. According to
the Utah Division of Water Quality, the waters of Utah Lake are protected for
infrequent contact recreation; warm water species of game fish and aquatic life; and
agricultural. The wetlands along the south and parts of the eastern shore of Provo Bay
are protected for migratory birds and waterfowl (DWQ 2016; AGRC 2017b). These
areas also serve as the exclusive habitat of the critically endangered June Sucker (Utah
Lake Commission 2011).
3.3.3 GEOLOGY
The Site lies in the northern portion of Utah Valley which is near the eastern margin of the
basin and range physiographic province. Utah Valley is a graben formed by normal faulting
during the Tertiary and Quaternary time. At the eastern boundary of the graben, which was
formed by the faulting along the Wasatch fault zone, the Wasatch Range has been uplifted as
much as 7,000 feet. The western boundary of the graben is the Utah Lake fault zone, which
extends under Utah Lake, from Santaquin to Saratoga Springs and probably northward to the
Jordan Narrows area. The sediments found in Utah Valley consist of predominantly
unconsolidated lacustrine, alluvial fan, and fluvial deposits of Quaternary age. The maximum
depth of these deposits is unknown (UDNR 1985). Previous drilling events at the Site
experienced layers of silt, sand, gravel, and clay to a depth of 22 feet bgs (Wasatch
Environmental, 2002).
A soil survey of Utah Valley by the United States Department of Agriculture, Soil
Conservation Service found the soils consist of a combination of Layton fine sandy loams, Provo
Bay peaty silt loams, and McBeth silt loams. Layton fine sandy loam is generally found on 1 to 6
percent slopes and is described as well-drained and rapidly permeable. Runoff is slow, water
erosion is slight and wind erosion is moderate. Provo Bay peaty silt loam consists of deep, very

Site Investigation Work Plan
Bradshaw Auto – UTN000821042 5

poorly drained, strongly calcareous, nearly level soils. They are found in low lying areas on the
valley bottoms. The McBeth silt loam is found on 0 to 1 percent slopes and is described as
poorly drained. Runoff is slow and there is no erosion hazard (USDA 1972). Previous studies
from Wasatch Environmental found a variation of silt, sand, gravel, and clay to depths of 22.5
feet below ground surface (Wasatch Environmental, 2002).
3 .3.4 METEOROLOGY
The Site is located in a semi-arid continental climate. The Site receives moderate annual
precipitation. Data from the Provo Brigham Young University weather monitoring station
indicates the average precipitation is 19.63 inches per year with a normal monthly high of 2.16
inches in May and a normal monthly low of 0.84 inches in July (WRCC, 2021). The two-year
24-hour rainfall is 1.53 inches (NOAA, 2016). The daytime temperatures fluctuate throughout
the year with temperatures reaching an average high of 93°F in July and a low of 38.7°F in
January (WRCC, 2021).
The Site resides over alluvial-fan deposits from the middle Holocene to upper Pleistocene
consisting of sand, silt, and gravel that is poorly stratified and poorly sorted; deposited at
drainage mouths (Constenius et al., 2011). On-Site soils encountered in previous studies were
described as predominantly well graded sand, gravel, and cobble to a depth of 13 or 14 feet
underlain by a silty sand (SM) layer to a depth of 31 feet (Wasatch Environmental, 1997). The
SM layer is most likely associated with a Provo River delta deposit. The silty sand layer is
underlain by interlayered silty sand (SM) and clayey silt (ML) to a depth of 40 feet (Wasatch
Environmental, 1997). The data collected by Wasatch Environmental suggests that the shallow
aquifer has a high hydraulic conductivity due to the area consisting of granular material. The
closest municipal drinking water well is 1.75 miles southeast (Swistak, 2021). Local
groundwater was encountered at 9-11 feet below ground surface (bgs) flowing to the south with
an approximate hydraulic gradient of 0.011 ft/ft (Wasatch Environmental, 1999).
4.0 PRELIMINARY PATH WAY ANALYSIS
4.1 WASTE SOURCE CHARACTERIZATION
Existing data from the former Bradshaw Auto indicates the clear presence of hazardous
chemicals in groundwater at concentrations which exceed appropriate MCL benchmark values.
Data collected during various groundwater sampling events from 1995 to 2001 detected PCE,
TCE, vinyl chloride, cis-1,2-DCE, and trans-1,2-DCE significantly above their respective MCLs
(Wasatch Environmental, 2001). This could potentially occur due to reductive dechlorination
facilitated by the presence of petroleum hydrocarbons in the groundwater. TCE, cis-1,2-DCE,
and VC are all partial degradation products that can be produced as PCE is biodegraded under
anaerobic conditions (Watts, 2006). Not only is that explanation consistent with currently
available data, it also suggests that the concentration of those degradation products, which are in
fact more hazardous than PCE alone, will continue to increase over time as the PCE continues to
degrade and breakdown.

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Bradshaw Auto – UTN000821042 6

Chlorinated solvents were found to be present in groundwater, soil, and air samples collected on
and around the Site (Swistak, 2021); however, the currently available data does not adequately
characterize the vertical and horizontal distribution of contaminants at that location. The
available data suggests that the plume has moved laterally off-site via the groundwater pathway,
however the extent is unknown and more data is required to delineate the extent of the plume.
4.2 SOIL EXPOSURE PATHW AY ANALYSIS
Several VOCs were detected within soil samples at the Site during the 1995 and 1996 sampling
events; however, none of these detections exceeded EPA RSLs (Wasatch Environmental, 1997).
Prior to the excavation of the Bradshaw property in 2000, contaminated soil at the Site may have
been present for as long as 50 years. A part of the Corrective Action Plan for Bradshaw Auto
stated that Wasatch Environmental would reduce the levels of contamination in soils to be below
EPA Region 3 residential Risk Based Concentrations (RBC) for soils by conducting an
excavation of source area material and installing/operating a DDC system. There is currently no
analytical data to show present levels of contamination in soils; however, the remediation system
was shut down in 2002 due to reaching clean up goals set for the Site.
Contaminated soils at the Site have been removed during previous remedial efforts; however,
some contamination may remain present on-Site. The soil on-Site is capped with asphalt or
concrete, or exposed to the air but fenced off to restrict access. Approximately 560 people live
within a one-quarter mile radius of the Site (U.S. Census Bureau, 2019). It is unlikely that
exposure via the soil exposure pathway is occurring through soil ingestion or inhalation of dust
particles.
4.3 SOIL VAPOR INTRUSI ON PATHWAY
PCE may migrate through the soil from source areas to nearby businesses. Current EPA
guidance recommends a vapor intrusion evaluation for businesses and residences located within
100 horizontal feet from significant soil or groundwater contamination (EPA Office of Solid
Waste and Emergency Response, 2015). Exposure via the soil vapor intrusion pathway can be
particularly a concern for persons working in a building’s basement where there is less
ventilation and vapors from the soil can accumulate. Approximately 560 people live within a
one-quarter mile radius of the Site (U.S. Census Bureau, 2019). There are seven businesses
located to the south of the former Bradshaw Auto facility on Center Street, as well as an
apartment complex adjacent and to the west of the Site. The people working and living in these
properties could be exposed to subsurface vapor intrusion. Most notable of these properties, the
former Provo Furniture Store, is located directly downgradient of the former Bradshaw Auto
facility. The former Provo Furniture Store is currently occupied by four new businesses.
PCE and TCE contamination at the former Provo Furniture store property indicate a risk of
subsurface vapor intrusion to workers at nearby businesses. With limited data on businesses
sampled for subsurface intrusion it is hard to determine the extent of how many businesses could
be exposed to hazardous contaminants. When looking at the PCE shallow groundwater data
presented in Figure 3, it is apparent that groundwater contaminants are migrating south of the

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Bradshaw Auto – UTN000821042 7

Site, potentially exposing more businesses to subsurface intrusion. Assessing the current level of
contaminants in soil gas is a priority of this work plan.
4.4 GROUNDWATER EXPOSURE PATHWAY ANALYSI S
Currently available data indicates the presence of groundwater contamination at high levels and
suggests the transport of contaminants through groundwater. The data also suggests that the
groundwater contaminants are migrating off-site; however, the vertical and lateral extent is
unknown due to lack of off-site data. During a sampling event in 2001, a set of nested wells were
sampled with one well having a screening level of 7-17 feet bgs and the other 20.5-25.5 feet bgs
(MW13S and MW13D); the shallow well had detections of PCE at 26 ug/L and the deeper well
had detections of PCE at 4,300 ug/L (Swistak, 2021). This suggests that the non-aqueous phase
liquid has likely migrated vertically within the aquifer which would account for higher
concentrations in deeper groundwater; however, there is only one monitoring well with a
screening level at this depth so it’s not possible to delineate the vertical extent of the plume.
Chlorinated solvent contamination at the Site is indicative of a chlorinated solvent groundwater
plume of poorly defined size and extent. The source of this contamination is from waste being
dumped into the sump drain of the former Bradshaw Auto. The sump was not connected to any
sanitary sewer system and was poorly consolidated, allowing contaminants to easily flow into the
subsurface.
There are 16 active municipal drinking water supply wells located within a four-mile radius of
the Site serving three water supply systems with a total user population of 214,927 (U.S. Census
Bureau, 2019). The municipal groundwater well closest to the Site is Provo’s City’s utilities
well, located upgradient about 0.63 miles north-northwest of the Site (Swistak, 2021). There are
no downgradient municipal drinking water wells, but there are private domestic drinking water
resources within the range of this contamination, but more information is needed to fully assess
the groundwater dynamics and contaminant distribution at the Site. Significant unknowns remain
as a result of sparse data.
4.5 SURFACE WATER PATH WAY ANALYSIS
Surface water at the Site flows to nearby storm drains and runs approximately 2 miles west to the
Provo Bay, which then flows ~5 miles west to Utah Lake. There are no surface water streams,
canals, or lakes within ~1.1 miles of the Site and no surface derived drinking water sources
within 4 miles (Utah Division of Water Rights, 2021). The Site and surrounding areas do not fall
within any known flood hazard area (FEMA, 2021). There are sensitive environments
approximately 2 miles from the Site. These environments include palustrine, low perennial
riverine, and lacustrine limnetic environments (Figure 5). The likelihood of exposure via surface
water is low because surface water at the Site is extremely ephemeral and not likely to interact
with contaminant sources.

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Bradshaw Auto – UTN000821042 8

4.6 AIR EXPOSURE PATHWAY ANALYSIS
The area near the Bradshaw Auto facility is covered with a mix of asphalt, concrete, and grass
with both commercial and residential properties near the Site. There is little opportunity for Site
wastes to expose persons through air. There are approximately 560 people living within one-
quarter of a mile of the Site and are approximately 140,769 persons living within a four-mile
radius (U.S. Census Bureau, 2019). The nearest home is located approximately 700 feet to the
south of Center Street. There does not appear to be an immediate threat to human health at the
Site via the air exposure pathway based on the limited available information, however it is
possible. The two ambient air samples collected outside of the Provo Furniture Store showed
detections of various contaminants during both sampling events in 2001, with only benzene
values exceeding RSLs. These air samples were taken next to a busy road, so while exposure via
the air pathway is possible, detections of benzene may be a result of passing by vehicles.
This section identifies the Site sampling concept of operations, schedule, safety, and Site access
issues.
5.1 CONCEPT OF OPERATIONS
A Site Conceptual Model (SCM)(Table 1) has been completed to evaluate the potential pathways
for contaminant migration and to assist in the selection of appropriate sampling locations. Site
sampling activities will comply with the Data Quality Objectives (Table 2) as described in the
DERR Quality Assurance Project Plan (QAPP) (DERR, 2020) and environmental sampling
collection procedures as outlined in the EPA’s Contract Laboratory Program Guidance for Field
Samplers (EPA, 2014). The scope of the investigation includes the collection of 11 soil gas
samples and 19 groundwater (Figure 4). For purposes of quality assurance/quality control
(QA/QC), at least one field duplicate sample will be collected from each matrix as an external
check on laboratory procedures. Each day of sampling, a trip blank will be included as further
QA/QC verification. Additional volumes of soil gas and groundwater will be collected for
internal laboratory QA/QC purposes. Since temporary and disposable sampling equipment will
be used at each sampling location, a rinsate sample will not be necessary. All samples will be
analyzed for VOCs.
5.1.1 SCHEDULE
Site sampling is tentatively scheduled for the Spring of 2023. Additional sampling may be
completed as needed in Fall of 2023. Sampling is contingent on the EPA’s approval of this Work
Plan. Field activities are expected to last four days depending on conditions at the Site.
Coordination with the landowners, lessees, laboratories, and the local health department is on-
going and concurrent with this Work Plan. All logistical functions will be arranged by the Project
Manager in advance of field sampling.

5.0

Site Investigation Work Plan
Bradshaw Auto – UTN000821042 9

5.1.2 SAFETY
Site sampling personnel will avoid direct dermal contact, inhalation, and ingestion with
potentially contaminated materials. Sampling will be conducted in Level D personal protective
equipment unless the Site Health and Safety Officer, upon evaluation of Site conditions, deems
an upgrade necessary. A detailed Health and Safety Plan (Appendix A) will be prepared and
reviewed with field personnel prior to the beginning of any fieldwork. A Tailgate Safety Meeting
will be conducted by all personnel prior to the start of activities on each field day. In the event of
an accident, the nearest hospital is the Utah Valley Hospital located at 1034 N 500 W, Provo,
Utah (Appendix A).
5.1.3 SITE ACCESS AND L OGISTICS
Site access will be arranged by the Project Manager. The landowners/lessees will be asked to
sign a “Consent for Access To Property” form (Appendix B) prior to sampling. Any additional
logistical functions will be arranged by the Project Manager.
5.2 SAMPLE LOCATIONS
Soil gas and groundwater samples will be collected to identify potential human exposure threats
from soil vapor intrusion. Samples will be taken downgradient from the former facility to assess
migration of the plume. Samples will be collected to fill data gaps in the Site Conceptual Model
(Table 1) and to augment the existing data. Samples will be collected near buildings less than
100 feet from an area of documented soil contamination. Sample locations are illustrated in
Figure 4 and listed in Tables 3 and 4.
Sample locations were selected near occupied structures closest to known source areas. These
structures are the most likely to be affected by contamination based on proximity to source areas
and the direction of subsurface migration. Results from these locations will help us determine if
indoor air sampling is necessary to evaluate potential workplace exposures and if additional
sampling in an extended radius is warranted to evaluate additional soil vapor/groundwater
targets. Background soil gas and groundwater samples will be located up the hydraulic gradient
from the Site.
Sample locations may be adjusted in the field because of utilities or other Site conditions that
make the proposed sampling points inaccessible. Deviations from this Work Plan will be
carefully documented in the field notes by the Project Manager and noted in the SI Analytical
Results Report.

Site Investigation Work Plan
Bradshaw Auto – UTN000821042 10

5.3 SAMPLING METHODS
Sampling will proceed according to methods outlined in the DERR CERCLA Quality Assurance
Project Plan (QAPP) of January 2020 and other relevant EPA guidance documents. All sampling
events will be recorded in a field log book. All sample collection will proceed following strict
chain-of-custody procedures. Sampling procedures are described in the sections below.
5.3.1 SOIL GAS SAMPLE COLLECTION AND ANALYSIS
For soil gas collection, the drill rig will drill down to five feet bgs. Polyethylene or Tygon tubing
will be placed down the boring and connected to an evacuated and metered SUMMA® canister.
The hole will be sealed at the surface with wet bentonite or other inert material, and the sampling
system will be purged of at least three sample chain volumes. Once purged, the canister will
collect soil gas for one hour. The valves on the sample canisters will then be closed, and each
canister will be labeled appropriately. If necessary, opportunistic soil gas samples may be taken.
Soil gas samples will be sent to the selected Contract Laboratory Program (CLP) and analyzed
for VOCs using EPA approved method TO-15 Samples will be shipped as environmental
samples via chain-of-custody EPA to an EPA registered CLP laboratory and analyzed under
Routine Analytical Servicers (RAS) for target compound list and target analyte list constituents.
Field notes will be recorded to describe every major event that occurs during sampling. Each
sample will be photographed and described in the field book.
5.3.2 GROUNDWATER SAMPLE COLLECTION AND ANLYSIS
Groundwater sampling will be taken from existing monitoring wells at the Site, as well as,
temporary wells installed by a drill rig. Groundwater sampling from the on-Site monitoring wells
will utilize low-flow sampling and purging methods. A peristaltic pump and dedicated,
disposable tubing at each sample location will be used. New high-density polyethylene (HDPE)
tubing will be used for each well, the inlet of which will be placed within the top foot of the
water column. Water quality parameters (pH, temperature, conductivity, and turbidity) will be
measured using a Horiba U-51 Multiparameter Meter (or equivalent), calibrated prior to use
according to manufacturer’s specifications. Using depth to water and total depth of well
measurements, the casing volume of water for each well will be calculated. Wells will be purged
until one of the following criteria is met:
● Groundwater quality parameters of pH, temperature, conductivity, and turbidity readings
have stabilized to within 10% over three consecutive readings. Readings will be taken
every five minutes;
● Three casing volumes have been removed; or

Site Investigation Work Plan
Bradshaw Auto – UTN000821042 11

● The well pumped no longer produces.
An adequate quantity of disposable equipment will be supplied in order to minimize the need for
field decontamination. Groundwater sample locations are located on Figure 4. The existing
monitoring well network share the same symbology; however, dark blue represents wells to be
sampled while the light blue indicates the well will not be sampled during this event. Temporary
wells have their own separate symbol.
Groundwater sample collection from temporary wells will proceed after soil gas sample
collection. Prior to drilling, blue stakes and a private utility locate will be notified to mark out the
Site. The drill rig will proceed to a depth of 25 feet and install the temporary screen at 20-25 feet
bgs. Polyethylene tubing will be lowered into the boring and a peristaltic pump will be used to
collect shallow groundwater samples; the same low flow sampling guidelines above will be used
for temporary monitoring well sampling. If necessary, opportunistic groundwater samples may
be taken.
Groundwater samples will be sent to a selected Contract Laboratory Program (CLP) and
analyzed for VOCs using EPA Method 8260D. All groundwater samples will be put in 40 mL
amber glass vials preserved with hydrochloric acid to a pH of 2 and placed in a cooler on ice to 4
degrees Celsius (4°C) after collection.
All sampling events will be recorded in a field logbook. Field conditions may necessitate a
deviation of sampling methods from those presented in this Sampling Plan. Such deviations will
be noted in the field notes and reported in the Preliminary Assessment appendices.
5.4 INVESTIGATION DE RIVED WASTE
Investigation derived waste (IDW) is not anticipated at this time. Should any IDW be collected,
it will be disposed of in accordance with appropriate local, state, and federal regulations.
Disposable sampling equipment will be removed from the Site and disposed of as a non-
hazardous waste.
Samples will be handled and preserved as per the criteria of the QAPP revised January 2020
(DERR 2020). One soil gas and one groundwater sample going for laboratory analysis will be
selected as laboratory duplicate samples. Two groundwater and one soil gas sample will be
selected as field duplicates (Table 3; Table 4).
Soil gas sample BA-SG-02DUP will be collected as a field duplicate for sample BA-SG-02.
Groundwater samples BA_TW_02DUP and BA_MW5DUP will be collected as a field
duplicates for samples BA_TW_02 and BA_MW5, respectively. Each field duplicate is collected
with another field sample and acts as an external check on the laboratory procedures and
6.0 FIELD QUALITY CO NTROL AND ASSURANCE

Site Investigation Work Plan
Bradshaw Auto – UTN000821042 12

reproducibility of the analytical data. The analytical data for the field duplicate is compared to
analytical data for the parent field sample to establish the Relative Percent Difference (RPD%)
for the two analytical results. Generally, the acceptable RPD% for soil-gas samples is 0-30%.
Chain-of-Custody forms will be prepared with the EPA approved “Scribe” software. All samples
will be collected using strict chain-of-custody procedures and submitted to an EPA Region 8
Contract Laboratory.
Data validation will be performed by an EPA contractor. At the completion of sampling, a Field
Activities Summary Report will be drafted within 14 days of sampling completion, outlining and
documenting the procedures following the sampling event. The Field Activities Summary Report
will be included in the Site Inspection Analytical Results Report (ARR) which will be prepared
following receipt of validated data from the contract laboratory and submitted to EPA Region 8
for review and approval. The analytical data in the validation package will be compared to the
appropriate benchmark values in the Superfund Chemical Data Matrix and background, or
ambient conditions. The project manager will prepare an assessment of whether the Site should
be recommended for further action through CERCLA or alternate authority. All data and
observations collected as part of this SI will be included in a draft ARR and submitted to EPA
Region 8 for review and approval.

7.0
DATA REDUCTION, VALIDATION, AND REPO

Site Investigation Work Plan
Bradshaw Auto – UTN000821042 13

AGRC, 2017a; Utah Automated Geographic Reference Center; Groundwater Recharge
Discharge Areas shapefile, SGID10.GEOSCIENCE.Aquifer_RechargeDichargeAreas;
accessed in ArcGIS.

AGRC, 2017b; Utah Automated Geographic Reference Center; US Fish and Wildlife
Service (USFWS) National Wetland Inventory (NWI) shapefile;
SGID10.WATER.WetlandsNWI, accessed in ArcGIS.

Constenius, Kurt N, Donald L. Clark, Jon K. King, and J. B. Ehler. 2011. “Interim Geologic Map
of the Provo 30' X 60' Quadrangle, Utah, Wasatch, and Salt Lake Counties, Utah.” Utah
Geological Survey, 2011, 1–1.

Federal Emergency Management Agency (FEMA). 2021. “Digital Flood Insurance Rate Map.”
Washington D.C.: Federal Emergency Management Agency.

NOAA, 2016; National Oceanic and Atmospheric Agency; Point Precipitation
Frequency Estimates, Provo BYU Station; accessed via website http://hdsc.nws.noaa.gov
Swistak, M. 2021. “Preliminary Assessment – Bradshaw Auto.” Utah DERR.
UDNR, 1985; State of Utah Department of Natural Resources; Ground-water Resources
of Northern Utah Valley, Utah, Technical Document 80; Clark, D.W., and C. L. Appel.
U.S. Census Bureau. 2019. “Census Profile: Provo, UT.” Census Reporter, 2019.
USGS; 1975; 7.5 Minute Topographic Quadrangle, Provo, Utah.
http://censusreporteer.org/profiles.16000US4962470-provo-ut/.
Utah Division of Water Rights. 2021. “Utah Points of Diversion, Utah State Geographic
Information Database (GIS) Layer Name: Utah_Points_of_Diversion-shp.”
Utah DEQ/DERR. 2014. “Re: Bradshaw Auto Parts VCP #C007 Provo, Utah.”
Utah Lake Commission, 2011; Utah Lake Commission website http://www.utahlake.gov/utah
lake-is-a-good-place-to-fish-heres-why; Blog entry by Eric Ellis on August 18, 2011.
Wasatch Environmental, Inc. 1997. Voluntary Cleanup Program Application, Bradshaw Auto.
VCP ID No. C007. https://enviro.deq.utah.gov/
Wasatch Environmental, Inc. 1999. Final Corrective Action Plan: Bradshaw Trust Property 44
North 500 West Provo, Utah. VCP ID No. C007. https://enviro.deq.utah.gov/
9.0 REFERENCES

Site Investigation Work Plan
Bradshaw Auto – UTN000821042 14

Wasatch Environmental, Inc. 2002. Status Report and Monitoring Report #6 Former Bradshaw
Auto Parts 44 North 500 West Provo, Utah. VCP IP No. C007.
https://enviro.deq.utah.gov/

Western Regional Climate Center (WRCC). 2021. “PROVO BYU, UTAH - Climate Summary.”
https://wrcc.dri.edu/cgi-bin/cliMAIN.pl?utpbyu.

FIGURES
!
Figure 1Site Location MapBradshaw Auto44 N 500 WProvo, UT
Prepared By:Michael Swistak Date:
Reference Scale:Map Scale:
1/26/2021
$)
UTN000821042
1:60,000 1 inch = 5,000 feet02,250 4,500 6,750 9,0001,125 Feet
Subject Property
@A
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@A
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@A
@A
"J
!U
!U
!U !U
!U
@A
@A
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5
43
2
MW1
B1
MW2
MW8
MW7
MW6MW5
MW4
MW1A
MW10
MW3
Center Street
Apartment Building
Autoglass Shop
Mountain AmericaCredit Union
Building
Former Furniture Store
Former BradshawAuto Service
5
Sump
MW13 S/D
MW11
MW14
Figure 2Site MapBradshaw Auto44 N 500 WProvo, UT
Prepared By:Michael Swistak Date:
Reference Scale:Map Scale:
1/28/2021
$UTN000821042
1:600 1 inch = 50 feet02040608010Feet
Legend
@A Monitoring Well
"J Deep Monitoring Well
!U SVE Well
Building
Former Facility
Subject Property Boundary
Remediation System Trenching
@A
@A@A
@A
@A @A
@A
@A
@A
@A
@A
@A
Center Street
Apartment Building
Autoglass Shop
Mountain AmericaCredit Union
Former BradshawAuto Service
Sump
51
<2.0
47<2.0
<2.0
<2.0
36
26 85
50
25
5
50
MW1A
MW2MW3
MW4
MW5 MW6
MW7 MW8
MW10
MW13S
MW11
MW14
Former Furniure Store
Figure 3Shallow Groundwater PCE Distribution MapJuly 31, 2001Bradshaw Auto44 N 500 WProvo, UTPrepared By:Michael Swistak Date:
Reference Scale:Map Scale:
12/7/2022
$UTN000821042
1:600 1 inch = 50 feet02040608010Feet
Legend
Layer
@A mw
@A mws
PCE Contour Isoconcentration (µg/L)
PCE Concentration (µg/L)
Building
Former Facility
Subject Property Boundary
NS
NS
NS
NS
36
Not Sampled
PCE MCL: 5 (µg/L)
@A
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MW8MW7
MW6MW5
MW4 MW1A
MW10
MW3
Center Street
Apartment Building
Autoglass Shop
Mountain AmericaCredit Union
Former BradshawAuto Service
Sump
MW11
MW13S MW14
S
5
0
0

W

S
t
W 100 N
W 100 S
N
4
0
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S
t
BA_SG_07
BA_SG_08BA_SG_09
BA_SG_01 BA_SG_02BA_SG_02DUP BA_SG_03 BA_SG_04BA_TW_01 BA_TW_02BA_TW_02DUP BA_TW_03 BA_TW_04
BA_SG_05
BA_TW_05
BA_TW_06
BA_SG_06
BA_SG_Background
BA_TW_Background
Figure 4Proposed Sample Location MapBradshaw Auto44 N 500 WProvo, UT
Prepared By:Michael Swistak Date:
Reference Scale:Map Scale:
12/6/2022
$UTN000821042
1:1600 1 inch = 133 feet06012018024030Feet
Legend
#0 Soil Gas Sample
!.Temporary Monitoring Well Sample
@A Monitoring Well (sampled)
@A Monitoring Well (not sampled)
"J Deep Monitoring Well

TABLES
Previous sampling events have shown elevatedlevels of chlorinated solvents in indoor air samples. Soil gas and indoor air samples will be collected to identify areas affected by vapor intrusion.
Contaminated soil has been excavated from the source location, remaining soil on Site is covered.Potential exposure only by utility digging.
Previous sampling events have shown high levels of chlorinated solvents in on-Site monitoring wells. Additional groundwater samples will be collectedto delineate the groundwater plume.
No anticipated groundwater to surface water
KEY migration.
Incomplete Pathway
Possible Complete Pathway
Complete Pathway
NOTE: All CSMs assume "worst case" scenario with all potential receptors available for possible exposure to contaminants. The status of the exposure pathway is the primary consideration that drives the type of sampling effort needed at a site.
Table 1
Bradshaw Auto
Conceptual Site Model
Volatilization
x
○
●
PCE & Hydrocarbon Releaseto Soil and Groundwater
Potentially
Impacted Media
Complete Exposure
Pathway?
Air
Soil
Surface Water
Groundwater
Notes
Leaching Volatilization
x
x
●
●

Table 2
Data Quality Objectives
Bradshaw Auto

Problem Statement Identifying the
Decisions Decision Inputs Study Boundaries Decision Rules Limits on of Sample
Previous studies at the Bradshaw Auto Site have identified chlorinated solvents and petroleum hydrocarbons in groundwater, soil, and indoor air around the Site as a result of operations at the former facility. Remedial actions were conducted on Site as part of the Voluntary Cleanup Program (VCP); however, contamination may have migrated off Site and this was never addressed. Workers at nearby businesses may be exposed to hazardous indoor air concentrations due to subsurface vapor intrusion. Groundwater may have migrated downgradient, potentially impacting more businesses to soil vapor intrusion.
There are three principal study questions for the site: (1) Are soil vapors near properties presenting a threat of vapor intrusion? (2) Is groundwater contamination migrating off Site? (3) Is further sampling necessary to evaluate the extent of contamination and exposure targets?
Laboratory analytical data for groundwater and vapor intrusion samples will be collected to determine the potential extent of impacts to the Site and if contaminants are migrating off-site. Comparison of analytical results against the EPA Superfund Chemical Data Matrix (SCDM) Benchmarks (Reference Dose and Cancer Risk) will be used when available (Regional Screening Levels (RSLs)).
The Site is located in downtown Provo, Utah, in a commercial business area surrounded by residential homes. Human health is the primary target of interest related to the Site. The former Bradshaw Auto automotive service facility is the source of contamination during this SI. Residential and commercial properties located near the source of contamination will be investigated to assess the risk to human health.
If contaminants are detected in indoor air, soil gas, or groundwater, samples at concentrations above SCDM values, then further evaluation of the extent of contamination would be warranted.
Judgmental sampling will be used to bias samples toward more potentially contaminated areas or areas that require further characterization. Detection limits utilized by the laboratory are the EPA Method Detection Limit (MDL) procedures found in Title 40 Code of Federal Regulations (CFR) Parts 403.12 and136.
Groundwater, soil gas, and indoor air sample locations will be determined prior to the start of field work. Proposed sample locations may be changed in the field due to utility locations, on-Site debris, construction activities, and remaining structures.

FieldSample No.
BA_SG_01 Soil Gas Summa Canister Right of Way Identify exposure concentration
BA_SG_02 Soil Gas Summa Canister Right of Way Identify exposure concentration
BA_SG_02DUP Soil Gas Summa Canister Right of Way Identify exposure concentration Field Duplicate
BA_SG_03 Soil Gas Summa Canister Right of Way Identify exposure concentration
BA_SG_04 Soil Gas Summa Canister Right of Way Identify exposure concentration
BA_SG_05 Soil Gas Summa Canister Right of Way Identify exposure concentration Lab Duplicate
BA_SG_06 Soil Gas Summa Canister Right of Way Identify exposure concentration
BA_SG_07 Soil Gas Summa Canister Apartment Building Identify exposure concentration
BA_SG_08 Soil Gas Summa Canister Pioneer Book Store Identify exposure concentration
BA_SG_09 Soil Gas Summa Canister Rent-A-Center (Right of Way)Identify exposure concentration
BA_SG_Background Soil Gas Summa Canister Right of Way Background Sample
BA_TW_01 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_TW_02 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_TW_02DUP Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration Field Duplicate
BA_TW_03 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_TW_04 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_TW_05 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration Lab Duplicate
BA_TW_06 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_TW_Background Groundwater 40 mL Amber Glass Vial Right of Way Background Sample
BA_MW2 Groundwater 40 mL Amber Glass Vial Bradshaw Auto Identify exposure concentration
BA_MW4 Groundwater 40 mL Amber Glass Vial Royal Nails Identify exposure concentration
BA_MW5 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_MW5DUP Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration Field Duplicate
BA_MW7 Groundwater 40 mL Amber Glass Vial Rent-A-Center (Right of Way)Identify exposure concentration
BA_MW8 Groundwater 40 mL Amber Glass Vial Apartment Building Identify exposure concentration
BA_MW10 Groundwater 40 mL Amber Glass Vial Alley (Provo City Corp.)Identify exposure concentration
BA_MW11 Groundwater 40 mL Amber Glass Vial Apartment Building Identify exposure concentration
BA_MW13S Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_MW14 Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration
BA_MW14DUP Groundwater 40 mL Amber Glass Vial Right of Way Identify exposure concentration Field Duplicate
QA/QC
Table 3
Matrix Container¹Location Rationale
Table 4. Sample Analysis Checklist
SITE NAME:Bradshaw Auto SITE ID NUMBER:UTN000821042
LOCATION:Provo PROJECT LEADER:Michael Swistak
CITY:Provo, Utah SAMPLING DATE:
Field Parameters Laboratory Analyses QA/QC Other
Sample Location Sample Type
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BA_SG_01 Soil Gas XBA_SG_02 Soil Gas XBA_SG_02DUP Soil Gas X XBA_SG_03 Soil Gas XBA_SG_04 Soil Gas XBA_SG_05 Soil Gas X XBA_SG_06 Soil Gas XBA_SG_07 Soil Gas XBA_SG_08 Soil Gas XBA_SG_09 Soil Gas X XBA_SG_Background Soil Gas XBA_TW_01 Groundwater XBA_TW_02 Groundwater XBA_TW_02DUP Groundwater XBA_TW_03 Groundwater XBA_TW_04 Groundwater XBA_TW_05 Groundwater X XBA_TW_06 Groundwater XBA_TW_Background Groundwater X XBA_MW2 Groundwater XBA_MW4 Groundwater XBA_MW5 Groundwater XBA_MW5DUP Groundwater X XBA_MW7 Groundwater XBA_MW8 Groundwater XBA_MW10 Groundwater XBA_MW11 Groundwater XBA_MW13S Groundwater XBA_MW14 Groundwater XBA_MW14DUP Groundwater X X

APPENDIX A
SITE HEALTH AND SAFETY PLAN
SITE HEALTH AND SAFETY PLAN

SITE NAME: Bradshaw Auto
ADDRESS: The site is located at 40°14'3.69"N ,
111°40'0.08"W , Provo, Utah

SITE CHARACTERISTICS

SITE DESCRIPTION & HISTORY: The Site is a former automotive service facility that operated
approximately from 1970 to 1990. Chlorinated solvents and petroleum hydrocarbons were released at the
Site through a sump drain located within the former auto service building. The building has since been
demolished and the Site excavated; the property is now a vacant lot that is covered in dirt and fenced off.

HAZARD EVALUATION

CONTAMINANTS LIKELY FOUND ON-SITE: Hydrocarbons/chlorinated solvents found in the soil and
groundwater are the most likely contaminant to be found on-Site.
ON-SITE HAZARDS: The main hazard will be trips, slips, and falls as well as traffic nearby. Workers
will use caution when navigating the property to take samples.

PRIMARY ROUTES OF EXPOSURE: Inhalation is the likeliest route of exposure; however, the risk of
exposure to on-site contaminants is low. It is also possible for groundwater contaminations to come in
contact with skin when taking groundwater samples. Using the proper PPE, such as gloves, will protect
from this exposure route.
SAFETY MEASURES

LEVEL OF PROTECTION: Level D

SAFETY EQUIPMENT:
High visibility clothing (DEQ
vests);
Safety glasses (when
Sampling Gloves

EMERGENCY CONTACTS

NEAREST HOSPITAL: Utah Valley Hospital
ADDRESS: 1034 N 500 W, Provo, UT 84604
PHONE: [phone]

DIRECTIONS: Drive north on N 500 W St for 1.0 miles. The hospital will be on the right side of the road.
LOCAL HEALTH DEPARTMENT: Utah County Health Department
CONTACT:
ADDRESS: 151 S University Ave, Provo, UT 84601
PHONE: [phone]
SIGNATURES

APPENDIX B
Bradshaw Auto Site Inspection Field Notes
FIELD ACTIVITIES REPORT
Bradshaw Auto

NOTE: The field actives describe within is notes and visual observations collected by the
UDEQ/DERR Project Manager in the field.
DATE: June 27, 2023
ON-SITE PERSONAL: Michael Swistak – UDEQ/DERR
Matt LeFemina & Jimmy – Tetra Tech
Jamie Russell & 2 other members from RMEC Environmental
WEATHER: 85°F, Sunny.

0815 Arrive on Site and meet with Tetra Tech and RMEC Environmental; went through safety
meeting.
0825 Walked the Site to show everyone the sample locations.
0900 Begin setting the drill rig up at SG-01.
0910 SG-01 implant set.
0915 Drill rig begins set up at SG-03. Skipped SG-02 because Provo City Power was finishing
their fiber line locate.
0920 The rod of the drill rig got stuck at SG-03 due to wet/moist soil.
0935 Drill rig moved to SG-04. Rod is still stuck at SG-03.
0940 Begin drilling SG-04.
0947 Setting up SG-04 implant.
0950 May have hit a water line during SG-03 drilling that has resulted in extremely wet soil.
Having a hard time getting the rod out of the ground.
0958 Started SG-01 sample collection.
1001 Setting up SG-04 implant.
1001 Started drilling SG-06.
1035 Started drilling SG-02
1045 Begin setting up SG-02 sample.
1050 City employee from the Parks Department came out and said there is no water running in
the suspected line that was “hit” at SG-03 so it is unlikely the water encountered was a
result of drilling operations.
1100 SG-02 lab didn’t send duplicate “T” for soil gas samples. Tetra Tech is going to let it sit
overnight and take the sample tomorrow once they get the “T” to take the duplicate
sample at the same time as the parent. This could potentially cause different results due to
differences in pressure stabilization times between the samples.
1102 Moved SG-03 to the east 40 feet into the parking lane.
1135 Begin drilling SG-05.
1140 Jimmy going to check on SG-01 and SG-04.
1141 SG-01 was stopped at -4in.
1145 SG-05 implant was set.
1151 SG-04 was stopped at -5in.
1200 Mobilizing over to SG-7,8,9.
1215 Set up rig at SG-09.
1216 Lunch
1300 Begin drilling SG-09.
1310 Setting up SG-09 sample.
1315 Begin drilling SG-08.
1337 Stopped SG-05.
1338 Move to background location.
1340 Tetra Tech setting up SG-08 sample.
1420 Begin drilling SG-06.
1425 Setting up SG-06 sample.
1450 Begin drilling MW-5.
1500 Set up SG-06 sample.
1505 Temp well 5 drilled and logged.
1700 Packing up.
1830 Arrive at office to unpack.

DATE: June 28, 2023
ON-SITE PERSONAL: Michael Swistak – UDEQ/DERR
Edoardo Tagliaferri – UDEQ/DERR
Matt LeFemina, – Tetra Tech
Jamie Russell & 2 other team members RMEC Environmental
WEATHER: 86°F, Sunny.

0700 Arrive at office to pack with Edoardo.
0815 Arrive at Site with Tetra Tech and RMEC.
0820 Safety meeting.
0825 Still waiting on the connector “T” for duplicate samples at SG-02.
0830 Walk site with Tetra Tech to show existing wells were going to sample.
0855 Started drilling at TW-05.
0945 Tetra Tech going to begin groundwater sampling the existing well network.
1020 Refusal at TW-05 at 10’bgs. Rig cannot get through the gravel layer with the bigger
diameter rods.
1030 Gave Tetra Tech DEQ’s peristaltic pump for sampling; theirs died on them.
1040 Cannot get TW-05. Plan is to try TW-04 and see if that works, if not going to try new
approach.
1055 Set up at TW-04.
1130 Edoardo went to Tetra Techs hotel to get the “T” for SG-02 while they continued to
groundwater sample.
1200 TW-04, well collapsing in on itself at the 10-15 food interval. Was not able to continue
down. Going to change rods and take a grab sample.
1310 Tetra Tech setting up SG-02 sample and its duplicate.
1312 Begin purging TW-04 – 3 gallons.
1327 Starting SG-02 and the duplicate.
1345 Took samples from TW-04.
1430 Moved geoprobe to TW-06 and made it to depth of 25’ bgs.
1443 SG-2 and duplicate started at 1327 and ended at 1433.
1516 Begin purging TW-06.
1530 TW-06 groundwater samples taken.
1600 Wrap up drilling.
1605 Tetra Tech continuing to sample the existing well network.
1645 Leave site.
1740 Arrive at office and unpack.

DATE: June 29, 2023
ON-SITE PERSONAL: Michael Swistak – UDEQ/DERR
Edoardo Tagliaferri – UDEQ/DERR
Matt LeFemina, – Tetra Tech
2 team members RMEC Environmental
WEATHER: 86°F, Sunny.

0730 Arrive at office to pack.
0815 On site with Tetra Tech and RMEC.
0830 Set up rig to drill the background groundwater sample.
0835 Tetra Tech begin groundwater sampling.
0845 Hit refusal on background sample at 10 feet bgs. Going to offset and retry.
0900 Begin drilling background sample location.
0910 Refusal again at background sample, this time at 5 feet bgs. RMEC does not want to
continue drilling at this location.
0930 Mobilize back over to center street.
0950 At TW-01, having issues with the soft ground. Weight of the rig is causing the rod to
come off axis, which was part of the issue the first day of sampling.
0955 Rig seems to have stabilized, however, hit refusal at 10’ bgs at TW-01. Going to move to
TW-02. Discussed drilling outside of the private utility locate boundary to still get TW-
01, however it was determined that was a no go.
1040 Begin drilling at TW-02. Made it to 25’ bgs. Going to purge 3 well volumes.
1100 Begin pumping TW-02. 21-25’ bgs is screening interval.
1150 Sample taken for TW-02 and duplicate.
1300 Packing up site.
1400 Leave for office.

APPENDIX C
Consent for Access to Property Form

1
CONSENT FOR ACCESS TO PROPERTY
Bradshaw Auto, SEMS ID#UTN000821042
Provo, Utah
Name of Owner:
Address of Owner:
Address of Property Subject to Access:
A.I, the authorized representative of the owner of the property described above
(“Owner”), consent to officers, employees, contractors, subcontractors, and other
authorized representatives of the United States Environmental Protection Agency
(“EPA”) and the Utah Department of Environmental Quality (“DEQ”) entering and
having continued access to the above referenced (“Property”) for the following
purposes:
1.Conducting field inspections and investigations;
2.Taking samples of indoor air, sub slab, and soil gas on the Property;
3.Drilling, boring, or advancing of holes for subsurface investigations; and
4.Other such actions as may be necessary to protect human health and the environment.
B.Owner understands that these actions by EPA and DEQ are undertaken pursuant to
their response and enforcement responsibilities under the Comprehensive
Environmental Response, Compensation, and Liability Act (“CERCLA”) 42 U.S.C. §
9601, et seq. Notwithstanding any provision of this Consent for Access, the DEQ and
EPA retain all of their access authorities and rights, as well as all of their rights to
require land/water use restrictions, including enforcement authorities related thereto,
under CERCLA, RCRA and any other applicable federal or State statute or regulation.
EPA, DEQ, and Owner recognize that granting access does not constitute an
admission of liability under CERCLA, RCRA, and any other applicable federal or
State statute or regulation. EPA, DEQ, and Owner retain all rights and defenses under
CERCLA, RCRA, and any other applicable federal or State statute or regulation.
Liability for damage caused by negligence is governed by applicable law. Nothing in
this Consent for Access constitutes a waiver of sovereign immunity.
C.The undersigned certifies that he/she is fully authorized to grant the access provided
herein on behalf of Owner and to execute and legally bind Owner to this document.
2

Section 19-6-304 of the Utah Code Ann. Provides that, upon request as indicated below,
the Owner may have a split sample if possible and may obtain an analysis of the sample
available. To these ends, please mark your preference below:

☐ I wish to obtain splits of all samples collected on the Property and a
receipt describing each sample taken. I understand that I must provide the
necessary sample containers to obtain these splits. The responsibility of
choosing an analytical laboratory and the cost of analysis of the splits is
solely mine.

☐ When available to DEQ, Owner wishes to obtain a copy of the final
analytical results report and laboratory data concerning the samples taken
from the Property. Indicate address where results should be sent to:

Authorized Signature:

Print Name:

Date:

Telephone Number:

Email Address:

Site Name: Bradshaw Auto Project Manager: Michael Swistak

APPENDIX D
EPA START SI Sampling Support Trip Report

Ryan Dunham
Site Assessment Manager
U.S. Environmental Protection Agency Region 8
1595 Wynkoop St.
Denver, CO 80202
Subject:
Dear Mr. Dunham:
Tetra Tech, Inc. (Tetra Tech) is pleased to submit the following letter report for the Bradshaw Auto SI Sampling
Support site in Provo, Utah County, Utah (UTN000821042). The Superfund Technical Assessment and Response
Team (START) assisted the U.S. Environmental Protection Agency (EPA) and Utah Department of
Environmental Quality (UDEQ) with assessment activities at the site from June 27 through 29, 2023.
Enclosure 1 provides figures that depict the site location and sample locations. Enclosure 2 provides tables that
summarize the sampling and analytical results. Enclosure 3 provides the photographic log. Enclosure 4 provides
the data validation reports. Enclosure 5 contains the laboratory data packages.
SITE DESCRIPTION AND BACKGROUND
The site is located in the central portion of the city block northeast of the 500 West and Center Street intersection
in Provo, Utah. Figure 1 in Enclosure 1 depicts the site location. In this report, the site is defined as the former
location of Bradshaw Auto, as shown on Figure 2 in Enclosure 1. The area surrounding the site is primarily
residential and commercial. An apartment building is to the east of the site, and commercial properties are
located to the north, northeast, west, and south (UDEQ 2022).
Between 1919 and 1950, the site changed owners several times and was used to operate numerous businesses
including Provo Foundry and Machine Company (1919-1922), Superior Motor Company (1922-1946). In 1950,
Bradshaw Auto SI Sampling Support
Provo, Utah County, Utah
EPA Contract No. 68HE0820D0001
TD No: 2083-2303-07
DTN: 1343a
January 8, 2024
Mr. Ryan Dunham
January 8, 2024
Page 2
a new building was constructed. In 1971, the Bradshaw Auto Investment Corporation purchased the property via
a warranty deed from the Provo City Corporation and operated an automotive service facility for approximately
20 years. Since then, the building has been demolished, and the site is currently vacant (UDEQ 2022).
For many years, waste products including chlorinated solvents and petroleum hydrocarbons were discharged into
a sump drain located on the south side of the property. This sump drain was constructed out of masonry blocks
that were not cemented together with mortar and was not connected to the local sanitary sewer system. In 1995
and 1996, Wasatch Environmental decommissioned the sump and associated stormwater drainage system at the
site during an excavation. In 1997, the site entered the Voluntary Cleanup Program (VCP). Under this program,
several remediation efforts were taken by Wasatch Environmental including the installation of monitoring wells,
groundwater sampling, indoor and outdoor air sampling, soil sampling, the installation of a density-driven
convection remediation system, and a soil excavation at the Bradshaw Auto property. A closure plan was never
completed and the VCP agreement for the site was terminated in 2014 due to limited resources from the property
owner (UDEQ 2022).
Previous studies performed by Wasatch Environmental as part of the VCP identified tetrachloroethene (PCE),
trichloroethene (TCE), cis-1,2-dichloroethene (cis-1,2-DCE), vinyl chloride, naphthalene, and other compounds
within groundwater samples. TCE and PCE were detected at maximum concentrations of 31,000 micrograms per
liter (µg/L) and 28,000 µg/L, respectively. These values exceed the associated EPA Maximum Contaminant
Level (MCL) for residential tap water (5 µg/L) for both compounds. Cis-1,2-DCE, vinyl chloride, and trans-1,2-
DCE were also detected at values above their respective MCLs. Following various cleanup efforts,
contamination has migrated off site and the extent of this migration is not fully known (UDEQ 2022). The plume
boundary is unknown to START at this time.
FIELD ACTIVITIES
START conducted field activities at the site from June 27 through 29, 2023. These activities consisted of soil gas
and groundwater sampling. Figure 2 in Enclosure 1 depicts the site features and sampling locations associated
with the site. The boundary of the site (former auto body shop) is depicted on Figure 2. The following
subsections provide a description of the field activities and samples collected. UDEQ staff obtained access
agreements and worked with START on site to provide guidance for sampling. Enclosure 3 contains a
photographic log that shows on-site activities.
Soil Gas Sampling
On June 27, 2023, soil gas implants were installed at eight locations chosen by UDEQ. Direct-push technology
(DPT) was used to advance pushrods to a depth of 5 feet below ground surface (bgs) at each location (Figure 2).
The pushrods were removed from each hole and a stainless-steel screened implant attached to 0.25-inch-diameter
Mr. Ryan Dunham
January 8, 2024
Page 3
Teflon tubing was inserted to each hole. An approximately 3-foot-thick sand pack was placed around each
implant and the remaining annular space was filled with hydrated granular bentonite to the surface to create a
tight seal. Each soil gas sample was collected using a batch-certified, 1-liter Summa canister affixed with a flow
controller calibrated to collect a sample over an approximately 1-hour period. Starting time and vacuum pressure
were recorded along with Summa canister and flow controller serial numbers for each sample. Ending times and
vacuum pressures were recorded after samples were collected (see Table 1 in Enclosure 2).
Soil gas samples were shipped under chain of custody via FedEx to ALS Environmental (Simi Valley,
California) for analysis of volatile organic compounds (VOC) using EPA Method TO-15. Table 2 in Enclosure 2
summarizes the analytes detected in soil gas samples. Enclosure 5 contains a copy of the laboratory data
package.
Groundwater Sampling
On June 27 and 28, 2023, START collected seven groundwater samples from an existing network of permanent
monitoring wells (BA_MW4, BA_MW5, BA_MW7, BA_MW8, BA_MW13S, BA_MW13D, and BA_MW14)
and four samples including a field duplicate (BA_TW_02, BA_TW_02DUP, BA_TW_04, and BA_TW_06)
from temporary monitoring wells that were installed during this field effort (Figure 2). Temporary monitoring
wells were installed using DPT and a 5-foot-long slotted, metal screen was installed inside of each rod and
lowered to the bottom of the well.
Prior to sampling, the depth to water and total depth of each well was measured using a water level indicator that
was decontaminated between well locations (see Table 3). Each well was purged of three times the casing
volume before sample collection began. Once the well had been purged, samples were collected using low-flow
sampling techniques with a peristaltic pump connected to 0.25-inch-diameter Teflon tubing. A matrix
spike/matrix spike duplicate sample was collected with sample BA_MW4.
Groundwater samples were shipped under chain of custody via FedEx to Chemtech Consulting Group
(Mountainside, New Jersey) for analysis of VOCs under the EPA Contract Laboratory Program (CLP).
Analytical results can be found in Table 3. Enclosure 5 contains a copy of the CLP data package.
DEVIATIONS FROM SCOPE OF WORK
START and UDEQ were not granted property access to several sample locations (BA_SG_07 and BA_MW1
through BA_MW3) and samples were not collected from these locations. BA_MW1 through BA_MW3 are
located inside the site boundary and BA_SG_07 is located east of the site boundary in the parking lot of the
neighboring apartment building. Additionally, samples BA_MW10 and BA_MW11 were not collected because
the wells could not be located and are assumed to be abandoned or destroyed. Groundwater samples were not
collected from BA_TW_01, BA_TW_05, and BA_TW_BACKGROUND due to difficult subsurface conditions
Mr. Ryan Dunham
January 8, 2024
Page 4
that prevented the installation of these temporary wells. Refusal was reached with the Geoprobe above the water
table at around 10 feet bgs at these locations. An unmarked irrigation line was found near the proposed location
for samples BA_SG_03 and BA_TW_03. Field crews were unable to locate alternate sample locations nearby
that were free of utility markings and these samples were not collected due to safety concerns.
DECONTAMINATION AND INVESTIGATION-DERIVED WASTE
Decontamination water volume was minimal and was poured onto the ground at the end of each day’s sampling
activities. Purge water was poured back into the well when sampling was complete at each location. All sampling
equipment was disposable, was removed from the site, and was disposed of as non-hazardous waste.
DATA VALIDATION
START conducted a Stage 2B data validation of the laboratory analytical results in accordance with the Tetra
Tech Quality Assurance Project Plan for Region 8 Site Assessment Task Orders, Superfund Technical
Assessment and Response Team, EPA Region 8 (Tetra Tech 2023) and EPA National Functional Guidelines for
Superfund Organic Methods Data Review (EPA 2020). Enclosure 4 provides the data validation reports.
Enclosure 5 provides a copy of the laboratory analytical data packages.
RESULTS
PCE, TCE, and 1,2-dibromoethane were detected in one or more groundwater samples above their respective
screening levels. Several analytes were also detected above both residential and commercial Vapor Intrusion
Screening Levels (VISL) in one or more soil gas samples (EPA 2023). These analytes include PCE, TCE, 1,3-
butadiene, and chloroform. Benzene exceeded the residential but not the commercial VISL. Tables 2 and 3 in
Enclosure 2 contain the full list of analytes detected in both matrices.
REFERENCES
Tetra Tech, Inc. 2023. “Quality Assurance Project Plan for Region 8 Site Assessment Task Orders, Superfund
Technical Assessment and Response Team, EPA Region 8.” Revision 4. March.
U.S. Environmental Protection Agency (EPA). 2020. “National Functional Guidelines for Superfund Organic
Methods Data Review.” November.
U.S. Environmental Protection Agency (EPA). 2023. “Vapor Intrusion Screening Level (VISL) Calculator.”
November.
Utah Department of Environmental Quality. 2022. “Site Inspection Work Plan, Bradshaw Auto, Utah County,
Utah,” UTN000821042. December.
Page 5 Mr. Ryan Dunham
January 8, 2024
CLOSING
If you have any questions concerning the findings of this report, please contact me at [phone] or by email
at [e-mail].
Sincerely,
Matt LaFemina
START V TD Manager
Enclosures (5)
cc: Didi Fung (START V Program Manager), Lauren Foster (START V Readiness Coordinator), Clayton Longest
(START V Document Control Coordinator)

ENCLOSURE 1: FIGURES

Path: \\etss706gisfs1\CORPArcGisShare\EMI\R08_STARTV\Bradshaw Auto\ArcGIS_Pro\Bradshaw Auto.aprx\Bradshaw Auto_Site Location
UTNV CO
WY
Figure 1
Site Location
Provo, Utah County, Utah
Bradshaw Auto
Date: 8/22/2023
Analyst: J. Webster
TD: 2083-2303-07
Region 8 START V
United States
Environmental
Protection Agency
Source:
Background: USA Topo Maps
Spatial Reference:
WGS 1984 Web Mercator Auxiliary Sphere
Coordinate System
Notes:
0 5
Miles
/Legend
Site Location
ENCLOSURE 2: TABLES
Bradshaw Auto SI Sampling Support
2083‐2303‐07
Table 1
Summary of Summa Canisters
1
Sample ID Canister Serial Flow Controler Serial Start Date Start Time Start Pressure (in. Hg) End Date End Time End Pressure (in. Hg)
BA_SG_01 1SS00775 OA01784 6/27/2023 9:58:00 AM ‐19 6/27/2023 11:41:00 AM ‐4
BA_SG_02 1SC00848 OA00878 6/27/2023 1:27:00 PM ‐24.5 6/27/2023 2:33:00 PM ‐7
BA_SG_02DUP 1SC00927 OA00807 6/27/2023 1:27:00 PM ‐25 6/27/2023 2:33:00 PM ‐4
BA_SG_04 1SS00168 OA00668 6/27/2023 10:06:00 AM ‐25 6/27/2023 11:51:00 AM ‐5
BA_SG_05 1SC00368 OA01291 6/27/2023 12:07:00 PM ‐24 6/27/2023 1:37:00 PM ‐5
BA_SG_06 1SS01042 OA01384 6/27/2023 3:00:00 PM ‐24 6/27/2023 4:36:00 PM ‐4
BA_SG_08 1SC00702 OA00728 6/27/2023 2:13:00 PM ‐24 6/27/2023 3:53:00 PM ‐4.5
BA_SG_09 1SS01269 OA00189 6/27/2023 1:43:00 PM ‐25 6/27/2023 3:23:00 PM ‐5
BA_SG_BACKGROUND 1SS01227 OA00033 6/27/2023 2:24:00 PM ‐26 6/27/2023 3:58:00 PM ‐5
Notes:
SG Soil Gas
DUP Field Duplicate
in. Hg Inches of Mercury
Bradshaw Auto SI Sampling Support
2083‐2303‐07
Table 2
Analytical Results ‐ Soil Gas
2
CAS No.
EPA 
Residential 
VISLa
EPA 
Commercial 
VISLb
1,1,1‐Trichloroethane 71‐55‐6 174,000 730,000 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 U 2.8 U 2.8 U
1,1,2,2‐Tetrachloroethane 79‐34‐5 1.6 7.1 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 U 2.8 U 2.8 U
1,1,2‐Trichloroethane 79‐00‐5 5.9 26 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 U 2.8 U 2.8 U
1,1,2‐Trichlorotrifluoroethane 76‐13‐1 174,000 730,000 0.52 J 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 0.45 J 2.9 U 0.52 J
1,1‐Dichloroethane 75‐34‐3 59 256 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
1,1‐Dichloroethene 75‐35‐4 6,950 29,200 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
1,2,4‐Trichlorobenzene 120‐82‐1 70 292 5.4 U 6.8 U 5.3 U 5.9 U 5.9 U 5.4 U 5.4 UJ 5.9 UJ 5.8 U
1,2,4‐Trimethylbenzene 95‐63‐6 2,090 8,760 16 1.9 J 1.6 J 11 4.7 11 16 11 17
1,2‐Dibromoethane 106‐93‐4 0.16 0.68 2.6 U 3.2 U 2.5 U 2.8 U 2.8 U 2.5 U 2.6 U 2.8 U 2.7 U
1,2‐Dichloro‐1,1,2,2‐tetrafluoroethane (CFC 114)76‐14‐2 NE NE 2.6 U 3.2 U 2.5 U 2.8 U 2.8 U 2.5 U 2.6 UJ 2.8 UJ 2.7 U
1,2‐Dichlorobenzene 95‐50‐1 6,950 29,200 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 UJ 2.9 UJ 2.8 U
1,2‐Dichloroethane 107‐06‐2 3.6 16 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
1,2‐Dichloropropane 78‐87‐5 25 110 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 U 2.8 U 2.8 U
1,3,5‐Trimethylbenzene 108‐67‐8 2,090 8,760 5.0 3.3 U 2.6 U 3.4 1.6 J 3.6 4.5 2.6 J 5.4
1,3‐Butadiene 106‐99‐0 3.1 14 12 1.3 J 0.77 J 7.5 180 29 17 20 47
1,3‐Dichlorobenzene 541‐73‐1 NE NE 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 UJ 2.8 UJ 2.8 U
1,4‐Dichlorobenzene 106‐46‐7 8.5 37 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 UJ 2.8 UJ 2.8 U
1,4‐Dioxane 123‐91‐1 19 82 2.6 U 3.3 U 2.6 U 0.45 J 2.8 U 2.6 U 1.7 J 2.8 U 2.8 U
2‐Butanone (MEK)78‐93‐3 174,000 730,000 15 5.9 J 4.6 J 27 25 56 57 33 40
2‐Hexanone 591‐78‐6 1,040 4,380 6.7 0.92 J 1.0 J 7.0 5.9 U 6.8 10 9.2 7.0
2‐Propanol (Isopropyl Alcohol)67‐63‐0 6,950 29,200 27 1.9 J 3.0 J 37 10 31 35 24 28
4‐Ethyltoluene 622‐96‐8 NE NE 4.5 3.4 U 0.42 J 2.7 J 1.5 J 3.1 3.8 3.4 4.9
4‐Methyl‐2‐pentanone 108‐10‐1 104,000 438,000 15 1.1 J 0.74 J 14 14 13 14 25 11
Acetone 67‐64‐1 NE NE 150 65 53 200 150 360 370 190 280
Benzene 71‐43‐2 12 52 11 3.3 J 2.3 J 7.1 36 27 46 34 27
Benzyl Chloride 100‐44‐7 1.9 8.3 10 UJ 13 UJ 10 UJ 11 UJ 11 UJ 10 UJ 10 U 11 U 11 UJ
Bromodichloromethane 75‐27‐4 2.5 11 2.7 U 0.64 J 0.40 J 2.9 U 2.9 U 2.6 U 2.7 U 0.93 J 2.8 U
Bromoform 75‐25‐2 85 372 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
Bromomethane 74‐83‐9 174 730 2.5 U 3.1 U 2.5 U 0.44 J 2.7 U 2.5 U 2.5 U 0.63 J 1.9 J
Carbon Disulfide 75‐15‐0 24,300 102,000 13 7.7 8.1 13 20 20 29 29 21
Carbon Tetrachloride 56‐23‐5 16 68 2.6 U 3.2 U 2.5 U 2.8 U 2.8 U 2.5 U 2.6 U 2.8 U 2.7 U
Chlorobenzene 108‐90‐7 1,740 7,300 1.2 J 3.3 U 2.6 U 0.43 J 0.49 J 0.46 J 0.58 J‐2.8 UJ 1.4 J
Chloroethane 75‐00‐3 139,000 584,000 0.49 J 3.2 U 2.5 U 2.8 U 0.54 J 0.40 J 2.6 U 1.3 J 0.74 J
Chloroform 67‐66‐3 4.1 18 5.0 22 J 12 J 9.5 3.7 12 2.6 U 0.54 J 8.9
Chloromethane 74‐87‐3 3,130 13,100 1.5 J 1.0 J 0.77 J 2.8 U 7.2 5.9 3.1 5.9 3.5
cis‐1,2‐Dichloroethene 156‐59‐2 1,390 5,840 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.4 J 2.6 U 2.8 U 2.8 U
cis‐1,3‐Dichloropropene 10061‐01‐5 23 102 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
Cumene 98‐82‐8 13,900 58,400 1.6 J 3.3 U 2.6 U 0.93 J 0.66 J 1.2 J 1.5 J 0.73 J 2.4 J
Cyclohexane 110‐82‐7 209,000 876,000 2.5 J 6.5 U 5.1 U 1.5 J 5.6 J 8.1 15 3.4 J 9.4
Dibromochloromethane 124‐48‐1 NE NE 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
Dichlorodifluoromethane (CFC 12)75‐71‐8 3,480 14,600 2.0 J 1.6 J 1.8 J 1.8 J 1.4 J 1.8 J 2.1 J 3.7 1.8 J
Dichloromethane (Methylene Chloride)75‐09‐2 3,380 40,900 2.6 U 3.3 U 2.6 U 2.9 U 2.8 U 2.6 U 2.6 U 2.8 U 2.8 U
Ethyl Acetate 141‐78‐6 2,430 10,200 15 13 U 4.0 J 20 11 U 38 56 8.8 J 8.6 J
Ethylbenzene 100‐41‐4 37 164 5.1 1.9 J 1.2 J 3.1 4.6 6.4 5.1 6.7 17
Hexachlorobutadiene 87‐68‐3 4.3 19 2.6 UJ 3.3 UJ 2.6 UJ 2.9 UJ 2.8 UJ 2.6 UJ 2.6 UJ 2.8 UJ 2.8 UJ
Hexane 110‐54‐3 24,300 102,000 8.3 1.6 J 1.5 J 4.8 340 34 24 17 32
m,p‐Xylenes 179601‐23‐1 3,480 14,600 17 9.6 5.8 9.4 9.5 18 18 17 59
Methyl tert‐Butyl Ether 1634‐04‐4 360 1,570 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 2.6 U 2.7 U 2.9 U 2.8 U
Sample Date 6/27/20236/27/20236/27/20236/27/20236/27/20236/27/20236/28/20236/28/20236/27/2023
BA_SG_06 BA_SG_08 BA_SG_09 BA_SG_BACKGROUNDField Sample ID BA_SG_01 BA_SG_02 BA_SG_02DUP BA_SG_04 BA_SG_05
Analyte
Bradshaw Auto SI Sampling Support
2083‐2303‐07
Table 2
Analytical Results ‐ Soil Gas
3
CAS No.
EPA 
Residential 
VISLa
EPA 
Commercial 
VISLb
Sample Date 6/27/20236/27/20236/27/20236/27/20236/27/20236/27/20236/28/20236/28/20236/27/2023
BA_SG_06 BA_SG_08 BA_SG_09 BA_SG_BACKGROUNDField Sample ID BA_SG_01 BA_SG_02 BA_SG_02DUP BA_SG_04 BA_SG_05
Analyte
Naphthalene 91‐20‐3 2.8 12 0.69 J 3.4 U 2.7 U 0.84 J 2.9 U 2.7 U 0.66 J‐1.6 J‐0.99 J
n‐Heptane 142‐82‐5 13,900 58,400 5.7 3.3 U 0.54 J 3.8 180 26 9.6 12 19
o‐Xylene 95‐47‐6 3,480 14,600 6.7 3.8 2.2 J 4.0 4.1 6.6 7.4 6.3 21
Propene 115‐07‐1 104,000 438,000 78 24 J 14 J 34 1,300 130 290 160 410
Styrene 100‐42‐5 34,800 146,000 6.3 0.62 J 2.6 U 3.5 2.9 5.6 6.4 7.6 8.6
Tetrachloroethene 127‐18‐4 360 1,570 6.1 250 J 110 J 220 57 720 3,700 100 3.7
Tetrahydrofuran (THF)109‐99‐9 69,500 292,000 7.0 1.6 J 1.1 J 6.7 5.4 U 6.7 8.3 2.4 J 5.3
Toluene 108‐88‐3 174,000 730,000 29 4.1 3.5 15 27 40 39 28 39
trans‐1,2‐Dichloroethene 156‐60‐5 1,390 5,840 2.7 U 3.3 U 2.6 U 2.9 U 2.9 U 0.73 J 2.7 U 2.9 U 2.8 U
trans‐1,3‐Dichloropropene 10061‐02‐6 23 102 2.5 U 3.1 U 2.5 U 2.8 U 2.7 U 2.5 U 2.5 U 2.7 U 2.7 U
Trichloroethene 79‐01‐6 16 100 2.6 U 6.5 J 3.3 J 3.5 0.64 J 410 0.69 J 2.8 U 2.8 U
Trichlorofluoromethane 75‐69‐4 NE NE 1.5 J 0.93 J 0.92 J 1.5 J 0.82 J 1.3 J 1.7 J 2.7 J 0.93 J
Vinyl Acetate 108‐05‐4 6,950 29,200 25 U 31 U 24 U 27 U 27 U 25 U 25 U 27 U 26 U
Vinyl Chloride 75‐01‐4 5.6 93 2.5 U 3.1 U 2.5 U 2.8 U 2.2 J 0.75 J 1.2 J 1.3 J 0.96 J
Notes:Results reported in micrograms per cubic meter (µg/m3)
a EPA Residential Target Sub‐Slab and Near‐source Soil Gas Concentration (TR=1E‐06, THQ=1.0)
b EPA Commercial Target Sub‐Slab and Near‐source Soil Gas Concentration (TR=1E‐06, THQ=1.0)
BOLD Exceeds EPA RSL for Residential Air
BOLD Exceeds EPA RSL for both Residential and Industrial Air 
U The analyte was analyzed for, but was not detected at or above the associated value (reporting limit)
UJ The analyte was analyzed for, but was not detected at or above the associated value (repor ng limit), which is considered approximate due to deficiencies in one or more quality control criteria
J The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample
J‐The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be biased low
NE Not Established
CAS No. Chemical Abstracts Service Number
EPA U.S. Environmental Protection Agency
VISL Vapor Intrusion Screening Level
Bradshaw Auto SI Sampling Support
2083‐2303‐07
Table 3
Analytical Results ‐ Groundwater (validated)
4
CAS No.EPA MCLa
1,1,1‐Trichloroethane 71‐55‐6 200 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,1,2,2‐Tetrachloroethane 79‐34‐5 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,1,2‐Trichloro‐1,2,2‐trifluoroethane 76‐13‐1 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,1,2‐Trichloroethane 79‐00‐5 5.0 0.50 U 0.11 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,1‐Dichloroethane 75‐34‐3 NE 0.50 U 0.11 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,1‐Dichloroethene 75‐35‐4 7.0 0.50 U 0.17 J 0.50 U 0.50 U 0.50 U 0.13 J 0.50 U 0.16 J 0.18 J 0.50 U 0.13 J
1,2,3‐Trichlorobenzene 87‐61‐6 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2,3‐Trichloropropane 96‐18‐4 NE 0.50 U 0.16 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2,4‐trichlorobenzene 120‐82‐1 70 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2,4‐Trimethylbenzene 95‐63‐6 NE 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
1,2‐Dibromo‐3‐chloropropane 96‐12‐8 0.20 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2‐Dibromoethane 106‐93‐4 0.05 0.50 U 0.11 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2‐Dichlorobenzene 95‐50‐1 600 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2‐Dichloroethane 107‐06‐2 5.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,2‐Dichloropropane 78‐87‐5 5.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,3,5‐Trimethylbenzene 108‐67‐8 NE 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
1,3‐Dichlorobenzene 541‐73‐1 NE 0.50 U 0.12 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
1,4‐Dichlorobenzene 106‐46‐7 75 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
2‐Butanone 78‐93‐3 NE 5.0 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U
2‐Hexanone 591‐78‐6 NE 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U
4‐Methyl‐2‐pentanone 108‐10‐1 NE 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U
Acetone 67‐64‐1 NE 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U 5.00 U
Benzene 71‐43‐2 5.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Bromochloromethane 74‐97‐5 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Bromodichloromethane 75‐27‐4 80 0.50 U 0.14 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Bromoform 75‐25‐2 80 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Bromomethane 74‐83‐9 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Carbon disulfide 75‐15‐0 NE 0.50 UJ 0.13 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.71 0.28 J 0.27 J 0.42 J
Carbon tetrachloride 56‐23‐5 5.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Chlorobenzene 108‐90‐7 100 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Chloroethane 75‐00‐3 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Chloroform 67‐66‐3 80 0.50 U 0.95 0.61 0.46 J 0.90 0.50 U 0.66 0.50 U 0.50 U 0.50 U 0.42 J
Chloromethane 74‐87‐3 NE 0.99 J 0.66 J+ 0.50 U 0.58 J+ 0.50 U 0.76 J+ 0.61 J+ 0.58 J+ 0.50 U 0.50 U 0.51 J+
cis‐1,2‐Dichloroethene 156‐59‐2 70 0.50 U 0.12 J 0.50 U 0.50 U 0.50 U 7.00 0.61 0.50 U 0.50 U 1.6 23
cis‐1,3‐Dichloropropene 10061‐01‐5 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Cyclohexane 110‐82‐7 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Dibromochloromethane 124‐48‐1 80 0.50 U 0.13 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Dichlorodifluoromethane 75‐71‐8 NE 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Ethylbenzene 100‐41‐4 700 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
Isopropylbenzene 98‐82‐8 NE 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
m,p‐Xylene 179601‐23‐1 NE 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.16 J‐0.50 UJ
Methyl acetate 79‐20‐9 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Methyl tert‐butyl Ether 1634‐04‐4 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Methylcyclohexane 108‐87‐2 NE 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
6/29/20236/29/20236/29/20236/28/20236/28/2023
H0FA8
BA_MW5
CLP Sample ID
Field Sample ID
H0FA7
BA_MW4
TD (ft. bgs.)1539
Analyte
Sample Date 6/28/2023
BA_MW14
H0FB3
BA_TW_02
H0FB0
BA_MW7
H0FC1
BA_MW13D
H0FA3
BA_MW13S
19.2
6/29/2023
BA_TW_06
H0FC3
DTW (ft. bgs.)10.211.310.29.410.1 10.9
H0FB4
BA_TW_02DUP
H0FB6
BA_TW_04
H0FB1
BA_MW8
H0FA4
2525.3517.1513.5 20252520.3
6/28/20236/28/20236/29/20236/28/2023
14.514.5141410.5
Bradshaw Auto SI Sampling Support
2083‐2303‐07
Table 3
Analytical Results ‐ Groundwater (validated)
5
CAS No.EPA MCLa
6/29/20236/29/20236/29/20236/28/20236/28/2023
H0FA8
BA_MW5
CLP Sample ID
Field Sample ID
H0FA7
BA_MW4
TD (ft. bgs.)1539
Analyte
Sample Date 6/28/2023
BA_MW14
H0FB3
BA_TW_02
H0FB0
BA_MW7
H0FC1
BA_MW13D
H0FA3
BA_MW13S
19.2
6/29/2023
BA_TW_06
H0FC3
DTW (ft. bgs.)10.211.310.29.410.1 10.9
H0FB4
BA_TW_02DUP
H0FB6
BA_TW_04
H0FB1
BA_MW8
H0FA4
2525.3517.1513.5 20252520.3
6/28/20236/28/20236/29/20236/28/2023
14.514.5141410.5
Methylene chloride 75‐09‐2 5.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
o‐Xylene 95‐47‐6 NE 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
Styrene 100‐42‐5 100 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ
Tetrachloroethene 127‐18‐4 5.0 0.50 UJ 0.21 J‐0.15 J‐0.29 J‐14 J‐270 J‐350 J‐78 J‐70 J‐4.3 J‐5.7 J‐
Toluene 108‐88‐3 1,000 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.23 J‐0.17 J‐
trans‐1,2‐Dichloroethene 156‐60‐5 100 0.50 U 0.13 J 0.50 U 0.50 U 0.50 U 0.13 J 0.50 U 0.50 U 0.50 U 0.50 U 0.80
trans‐1,3‐Dichloropropene 10061‐02‐6 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Trichloroethene 79‐01‐6 5.0 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 0.50 UJ 74 J‐6 J‐5.5 J‐5.1 J‐3.1 J‐24 J‐
Trichlorofluoromethane 75‐69‐4 NE 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U
Vinyl chloride 75‐01‐4 2.0 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.39 J 0.46 J 0.50 U 0.14 J
Notes:Results reported in micrograms per liter (µg/L)
a EPA Maximum Contaminant Level (TR=1E‐06, THQ=1.0)
BOLD Exceeds EPA MCL
U The analyte was analyzed for, but was not detected at or above the associated value (reporting limit)
UJ The analyte was analyzed for, but was not detected at or above the associated value (repor ng limit), which is considered approximate due to deficiencies in one or more quality control criteria
J The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample
J‐The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be biased low
NE Not Established
DTW Depth to Water
TD Total Depth
ft. bgs. Feet below ground surface
CAS No. Chemical Abstracts Service Number
CLP Contract Laboratory Program
EPA U.S. Environmental Protection Agency
ENCLOSURE 3: PHOTOGRAPHIC LOG
PHOTOGRAPH LOG
Project Name: Bradshaw Auto
Site Location: Provo, UT 84601 Project No. 2083-2303-07
Page 1 of 7

Date/Time
Taken: 6/27/2023 9:04:00 AM

Photographer: LaFemina_Matt
Latitude: 40.233662
Longitude: -111.667203
Photo
Direction:East
Category: Assessment
Photo Description: Geoprobe operations at location of sample BA_SG_01.
Photo Name: 150426.jpg
6/27/2023 10:09:00 AM

Photographer: Webster_Jimmy
Latitude: 40.233651
Longitude: -111.665993
Photo
Direction:North
Category: Assessment
Photo Description:Collection of BA_SG_04 using Summa canister.
Photo Name: 160935.jpg
PHOTOGRAPH LOG
Project Name: Bradshaw Auto
Site Location: Provo, UT 84601 Project No. 2083-2303-07
Page 2 of 7

Date/Time
Taken: 6/27/2023 12:06:00 PM

Photographer: Webster_Jimmy
Latitude: 40.233037
Longitude: -111.665775
Photo
Direction:South
Category: Assessment
Photo Description: Collection of BA_SG_05 using Summa canister.
Photo Name: 180657.jpg
6/27/2023 2:14:00 PM

Photographer: Webster_Jimmy
Latitude: 40.234209
Longitude: -111.666555
Photo
Direction:West
Category: Assessment
Photo Description:Collection of BA_SG_08 using Summa canister.
Photo Name: 201441.jpg
PHOTOGRAPH LOG
Project Name: Bradshaw Auto
Site Location: Provo, UT 84601 Project No. 2083-2303-07
Page 3 of 7

Date/Time
Taken: 6/27/2023 2:24:00 PM

Photographer: Webster_Jimmy
Latitude: 40.23549
Longitude: -111.665576
Photo
Direction:West
Category: Assessment
Photo Description: Summa canister collecting soil gas sample BA_SG_BACKGROUND.
Photo Name: 202449.jpg
6/28/2023 11:11:00 AM

Photographer: Webster_Jimmy
Latitude: 40.234287
Longitude: -111.666853
Photo
Direction:Not Applicable
Category: Assessment
Photo Description:Using a peristaltic pump to purge monitoring well MW7 before collecting sample BA_MW7.
Photo Name: 111101.png
PHOTOGRAPH LOG
Project Name: Bradshaw Auto
Site Location: Provo, UT 84601 Project No. 2083-2303-07
Page 4 of 7

Date/Time
Taken: 6/28/2023 12:18:00 PM

Photographer: Webster_Jimmy
Latitude: 40.234241
Longitude: -111.666674
Photo
Direction:Not Applicable
Category: Assessment
Photo Description: Collection of sample BA_MW4 in a 40-milliliter volatile organic analyis vial using a peristaltic pump.
Photo Name: 181852.jpg
6/28/2023 1:25:00 PM

Photographer: Webster_Jimmy
Latitude: 40.233591
Longitude: -111.666746
Photo
Direction:Northwest
Category: Assessment
Photo Description:Collection of BA_SG_02 and BA_SG_02DUP using Summa canisters connected to each other using Teflon tubing and a splitter valve.
Photo Name: 192558.jpg
PHOTOGRAPH LOG
Project Name: Bradshaw Auto
Site Location: Provo, UT 84601 Project No. 2083-2303-07
Page 5 of 7

Date/Time
Taken: 6/28/2023 1:36:00 PM

Photographer: Webster_Jimmy
Latitude: 40.233678
Longitude: -111.665972
Photo
Direction:South
Category: Assessment
Photo Description: Purging temporary well before collecting sample BA_TW_04.
Photo Name: 193637.jpg
6/28/2023 9:06:00 AM

Photographer: LaFemina_Matt
Latitude: 40.233082
Longitude: -111.665764
Photo
Direction:South
Category: Assessment
Photo Description:Geoprobe operators installing temporary well at location for sample BA_TW_05.
Photo Name: 150620.jpg
PHOTOGRAPH LOG
Project Name: Bradshaw Auto
Site Location: Provo, UT 84601 Project No. 2083-2303-07
Page 6 of 7

Date/Time
Taken: 6/28/2023 3:26:42 PM

Photographer: LaFemina_Matt
Latitude: 40.233681
Longitude: -111.666023
Photo
Direction:Northeast
Category: Assessment
Photo Description: Five-foot-long metal screen installed inside of geoprobe drill rod to collect groundwater samples from temporary well locations.
Photo Name: 152637.jpg
6/28/2023 4:28:00 PM

Photographer: LaFemina_Matt
Latitude: 40.233819
Longitude: -111.666263
Photo
Direction:Southeast
Category: Assessment
Photo Description:Purging groundwater at MW14 before collecting sample BA_MW14.
Photo Name: 222845.jpg
PHOTOGRAPH LOG
Project Name: Bradshaw Auto
Site Location: Provo, UT 84601 Project No. 2083-2303-07
Page 7 of 7

Date/Time
Taken: 6/29/2023 9:01:00 AM

Photographer: LaFemina_Matt
Latitude: 40.234293
Longitude: -111.666486
Photo
Direction:Not Applicable
Category: Assessment
Photo Description: Purge water from monitoring well MW8. Roots and grass-like sediment coming out of well. Teflon tubing got clogged several times.
Photo Name: 150132.jpg
6/29/2023 11:37:00 AM

Photographer: Webster_Jimmy
Latitude: 40.233958
Longitude: -111.666579
Photo
Direction:Not Applicable
Category: Assessment
Photo Description:Collecting sample BA_MW13D.
Photo Name: 173737.jpg
ENCLOSURE 4: DATA VALIDATION REPORT

Tetra Tech, Inc.
1560 Broadway, Suite 1400, Denver, CO 80202
Tel [phone]
www.tetratech.com

August 14, 2023

Mr. Matt LaFemina
Tetra Tech Project Manager
1560 Broadway Suite 1400
Denver, CO 80202
Subject: Data Validation Report
Bradshaw Auto SI Sampling Support
EPA Contract No.: 68HE0820D0001
Task Order/Technical Direction No.: 68HE0820F0083/2083-2303-07
Document Tracking No. 1343b

Dear Mr. LaFemina:

Tetra Tech, Inc. (Tetra Tech) is submitting this data validation report for nine air samples (including a
field duplicate sample) collected at the Bradshaw Auto Site. The samples were collected on June 27 and
June 28, 2023 and were analyzed for volatile organic compounds by ALS Environmental. The final
laboratory data package was received on July 20, 2023.

Analytical data were evaluated in general accordance with the Tetra Tech Quality Assurance Project Plan
for Region 8 Site Assessment Task Orders, Superfund Technical Assessment and Response Team, EPA
Region 8, Revision 3 (March 2023), and the EPA National Functional Guidelines (NFG) for Organic
Superfund Methods Data Review (November 2020).

No rejection of results was required for this data package. The results may be used as qualified based on
the findings of this validation effort.

If you have any questions regarding this data validation report, please contact me at [phone].

Sincerely,

Environmental Chemist
Enclosure
cc: Didi Fung, Tetra Tech Program Manager
Matt LaFemina, Tetra Tech Project Manager
Clayton Longest, Tetra Tech Project Document Control Coordinator
TO/TD File

ATTACHMENT

DATA VALIDATION REPORT
ALS ENVIRONMENTAL REPORT NO. P2303058
DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 1 of 7

Site Name Bradshaw Auto TO/TD No. 68HE0820F0083/2083-2303-07 Document Tracking No. 1343b
Data Reviewer
(name and date)
Amelia Byl
August 3, 2023
Technical Reviewer
(name and date)
Bruce Welch
August 6, 2023
Laboratory Report No. P2303058 Laboratory ALS Environmental (Simi Valley, CA)
Analyses Volatile organic compounds by EPA method TO-15
Samples and Matrix Nine air samples (including one field duplicate sample)
Collection Date(s) June 27 and 28, 2023
Field Duplicate Pairs BA_SG_02 / BA_SG_02DUP
Field QC Blanks NA

INTRODUCTION

This checklist summarizes the Stage 2B validation performed on the subject laboratory report, in accordance with the U.S. Environmental
Protection Agency (EPA) Guidance for Labeling Externally Validated Laboratory Analytical Data for Superfund Use (January 2009). Analytical data
were evaluated in general accordance with the Tetra Tech Quality Assurance Project Plan for Region 8 Site Assessment Task Orders, Superfund
Technical Assessment and Response Team, EPA Region 8, Revision 3 (March 2023), and the EPA NFG for Organic Superfund Methods Data Review
(November 2020).

OVERALL EVALUATION

No rejection of results was required for this data package. The results may be used as qualified based on the findings of this validation effort.

Data completeness:
Within
Criteria Exceedance/Notes
Y

DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 2 of 7

Sample preservation, receipt, and holding times:
Within
Criteria Exceedance/Notes
N
The sample IDs are incorrect in the laboratory report. The laboratory report and EDD used dashes in the sample IDs instead of
underscores. The PM confirmed that underscores are correct. These IDs have been corrected in this data validation checklist, the
data table, and electronic data deliverable (EDD). A revised data package was not requested from the laboratory.
While no qualifications were applied, the data user should note samples were received by the laboratory without custody seals.
The project manager stated that the flow controllers for all nine samples were set for a one-hour run time.
The samples were collected in Provo, UT, which has an approximate elevation of 4600 feet. Due to the increased elevation, the
canister start pressure is expected to be approximately -26 to -21 inches of mercury. The chain of custody (COC) form states that
the canister start pressure for samples BA_SG_02 , BA_SG_05, BA_SG_06, and BA_SG_08 were higher than the generally
acceptable range of -30 to -25 inches of mercury, but no qualifications were applied because the canister starting pressures
were within the acceptable starting pressure range adjusted for elevation.
The COC states that the starting pressure for the canister used to collect sample BA_SG_01 was -19 inches of mercury, which is
higher than the adjusted pressure acceptance range. The canister starting pressure for sample BA_SG_01 suggests a leak may
have occurred in the canister fittings which may have allowed unintended air to enter the canister prior to sampling. The
situation could result in possible contamination and dilution of the subsequently collected sample. No qualification was applied,
but the results for sample BA_SG_01 should be used with caution.

Instrument Performance Checks:
Within
Criteria Exceedance/Notes
Y

Initial Calibration:
Within
Criteria Exceedance/Notes
Y

DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 3 of 7

Continuing Calibration:
Within
Criteria Exceedance/Notes
Y

Calibration Verification:
Within
Criteria Exceedance/Notes
Y

Method blanks:
Within
Criteria Exceedance/Notes
Y

Field blanks:
Within
Criteria Exceedance/Notes
NA

Interference Check Samples (ICS) (ICP metals only):
Within
Criteria Exceedance/Notes
NA

Surrogates and labeled compounds:
Within
Criteria Exceedance/Notes
Y

DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 4 of 7

MS/MSDs:
Within
Criteria Exceedance/Notes
NA

Post digestion spikes:
Within
Criteria Exceedance/Notes
NA

Serial dilutions:
Within
Criteria Exceedance/Notes
NA

Laboratory duplicates:
Within
Criteria Exceedance/Notes
NA

Field duplicates:
Within
Criteria Exceedance/Notes
N
BA_SG_02 / BA_SG_02DUP: The relative percent difference (RPD) for propene, chloroform, trichloroethene, and
tetrachloroethene exceeded the QAPP 50% RPD limit; therefore, the sample results for these analytes were qualified as estimated
(flagged J).

DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 5 of 7

LCSs/LCSDs:
Within
Criteria Exceedance/Notes
N
P230710:
The laboratory control sample/laboratory control sample duplicate (LCS/LCSD) average percent recovery (%R) was below the QAPP
acceptance criteria of 70-130%R for 1,2-dichloro-1,1,2,2-tetrafluoroethane (CFC 114), chlorobenzene, 1,3-dichlorobenzene, 1,4-
dichlorobenzene, 1,2-dichlorobenzene, 1,2,4-trichlorobenzene, naphthalene, and hexachlorobutadiene; therefore, the results for
these compounds for the samples associated with batch P230710 (BA_SG_08 and BA_SG_09) were qualified as estimated, possibly
biased low (flagged J-/UJ).
The LCS/LCSD average percent recoveries for 1,2-dibromoethane, styrene, and 1,1,2-trichloroethane were less than the laboratory
acceptance criteria, but no qualifications were applied because the recoveries for these analytes were within the QAPP acceptance
criteria.

P230711
The LCS/LCSD average %R was below the lower QAPP acceptance criteria for benzyl chloride and hexachlorobutadiene; therefore,
the results for these compounds for the samples associated with batch P230711 (BA_SG_01, BA_SG_02, BA_SG_02DUP, BA_SG_04,
BA_SG_05, BA_SG_06, and BA_SG_BACKGROUND) were qualified as estimated, possibly low biased (flagged UJ).

Sample dilutions:
Within
Criteria Exceedance/Notes
Y
All nine samples were analyzed using 0.40-liter (L) portions. Samples BA_SG_08 and BA_SG_06 were re-analyzed using a 0.040-L
portion for tetrachloroethene. Sample BA_SG_05 was re-analyzed using a 0.040-L portion for propene. The typical sample
volume that is analyzed is 1.0-L, and the analysis of decreased sample volumes effectively dilutes the samples. While no
qualifications were applied for sample dilutions, the data user should note the increased reporting limits (RL) for sample results
reported from dilutions.
The residual canister dilution factors ranged from 1.94 to 2.46.

DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 6 of 7

Re-extraction and reanalysis:
Within
Criteria Exceedance/Notes
NA

Second column confirmation (GC and HPLC analyses only):
Within
Criteria Exceedance/Notes
NA

Internal Standards:
Within
Criteria Exceedance/Notes
Y

Analyte quantitation and MDLs/RLs:
Within
Criteria Exceedance/Notes
Y Positive results greater than the method detection limit (MDL) but less than the RL were qualified as estimated (flagged J) by the
laboratory. Non-detect sample results were qualified as non-detect (flagged U) at the RL.

Tentatively identified compounds:
Within
Criteria Exceedance/Notes
NA

Other [NA]:
Within
Criteria Exceedance/Notes
NA
DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 7 of 7

Overall Qualifications:

See results summary pages attached for changes to the laboratory qualifiers based upon this validation. The following is a list of qualifiers and
definitions that may be used for the validation of this data package:

J The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample.
J+ The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased high.
J- The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased low.
NJ The analysis indicates the presence of an analyte that has been “tentatively identified” and the associated value is the approximate
concentration of the analyte in the sample.
R The sample result is rejected as unusable due to serious deficiencies in one or more quality control criteria. The analyte may or may not
be present in the sample.
U The analyte was analyzed for, but was not detected at or above the associated value (reporting limit).
UJ The analyte was analyzed for, but was not detected at or above the associated value (reporting limit), which is considered approximate
due to deficiencies in one or more quality control criteria.

BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_01 TO-15 71-55-6 1,1,1-Trichloroethane 2.6 U 0.33 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 79-34-5 1,1,2,2-Tetrachloroethane 2.6 U 0.36 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 79-00-5 1,1,2-Trichloroethane 2.6 U 0.27 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 76-13-1 1,1,2-Trichlorotrifluoroethane 0.52 J 0.37 2.7 UG/M3 0.52 J
BA_SG_01 TO-15 75-34-3 1,1-Dichloroethane 2.7 U 0.38 2.7 UG/M3 2.7 U
BA_SG_01 TO-15 75-35-4 1,1-Dichloroethene 2.7 U 0.36 2.7 UG/M3 2.7 U
BA_SG_01 TO-15 120-82-1 1,2,4-Trichlorobenzene 5.4 U 0.64 5.4 UG/M3 5.4 U
BA_SG_01 TO-15 95-63-6 1,2,4-Trimethylbenzene 16 0.36 2.6 UG/M3 16
BA_SG_01 TO-15 106-93-4 1,2-Dibromoethane 2.6 U 0.31 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 76-14-2 1,2-Dichloro-1,1,2,2-tetrafluoroethane (CFC 114)2.6 U 0.41 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 95-50-1 1,2-Dichlorobenzene 2.7 U 0.39 2.7 UG/M3 2.7 U
BA_SG_01 TO-15 107-06-2 1,2-Dichloroethane 2.7 U 0.29 2.7 UG/M3 2.7 U
BA_SG_01 TO-15 78-87-5 1,2-Dichloropropane 2.6 U 0.33 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 108-67-8 1,3,5-Trimethylbenzene 5.0 0.38 2.6 UG/M3 5.0
BA_SG_01 TO-15 106-99-0 1,3-Butadiene 12 0.43 2.6 UG/M3 12
BA_SG_01 TO-15 541-73-1 1,3-Dichlorobenzene 2.6 U 0.39 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 106-46-7 1,4-Dichlorobenzene 2.6 U 0.40 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 123-91-1 1,4-Dioxane 2.6 U 0.31 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 78-93-3 2-Butanone (MEK)15 0.54 5.1 UG/M3 15
BA_SG_01 TO-15 591-78-6 2-Hexanone 6.7 0.33 5.4 UG/M3 6.7
BA_SG_01 TO-15 67-63-0 2-Propanol (Isopropyl Alcohol)27 1.1 5.0 UG/M3 27
BA_SG_01 TO-15 622-96-8 4-Ethyltoluene 4.5 0.42 2.7 UG/M3 4.5
BA_SG_01 TO-15 108-10-1 4-Methyl-2-pentanone 15 0.36 5.4 UG/M3 15
BA_SG_01 TO-15 67-64-1 Acetone 150 5.9 26 UG/M3 150
BA_SG_01 TO-15 71-43-2 Benzene 11 0.38 2.7 UG/M3 11
BA_SG_01 TO-15 100-44-7 Benzyl Chloride 10 U 0.59 10 UG/M3 10 UJ
BA_SG_01 TO-15 75-27-4 Bromodichloromethane 2.7 U 0.38 2.7 UG/M3 2.7 U
BA_SG_01 TO-15 75-25-2 Bromoform 2.7 U 0.54 2.7 UG/M3 2.7 U
BA_SG_01 TO-15 74-83-9 Bromomethane 2.5 U 0.36 2.5 UG/M3 2.5 U
BA_SG_01 TO-15 75-15-0 Carbon Disulfide 13 0.79 5.3 UG/M3 13
BA_SG_01 TO-15 56-23-5 Carbon Tetrachloride 2.6 U 0.36 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 108-90-7 Chlorobenzene 1.2 J 0.35 2.6 UG/M3 1.2 J
BA_SG_01 TO-15 75-00-3 Chloroethane 0.49 J 0.33 2.6 UG/M3 0.49 J
BA_SG_01 TO-15 67-66-3 Chloroform 5.0 0.35 2.6 UG/M3 5.0
BA_SG_01 TO-15 74-87-3 Chloromethane 1.5 J 0.42 2.6 UG/M3 1.5 J
BA_SG_01 TO-15 156-59-2 cis-1,2-Dichloroethene 2.6 U 0.37 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 10061-01-5 cis-1,3-Dichloropropene 2.7 U 0.41 2.7 UG/M3 2.7 U
BA_SG_01 TO-15 98-82-8 Cumene 1.6 J 0.38 2.7 UG/M3 1.6 J
BA_SG_01 TO-15 110-82-7 Cyclohexane 2.5 J 0.74 5.2 UG/M3 2.5 J
Page 1 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_01 TO-15 124-48-1 Dibromochloromethane 2.7 U 0.34 2.7 UG/M3 2.7 U
BA_SG_01 TO-15 75-71-8 Dichlorodifluoromethane (CFC 12)2.0 J 0.43 2.6 UG/M3 2.0 J
BA_SG_01 TO-15 75-09-2 Dichloromethane (Methylene Chloride)2.6 U 0.74 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 141-78-6 Ethyl Acetate 15 1.4 10 UG/M3 15
BA_SG_01 TO-15 100-41-4 Ethylbenzene 5.1 0.37 2.6 UG/M3 5.1
BA_SG_01 TO-15 87-68-3 Hexachlorobutadiene 2.6 U 0.54 2.6 UG/M3 2.6 UJ
BA_SG_01 TO-15 110-54-3 Hexane 8.3 0.54 2.6 UG/M3 8.3
BA_SG_01 TO-15 179601-23-1 m,p-Xylenes 17 0.69 5.4 UG/M3 17
BA_SG_01 TO-15 1634-04-4 Methyl tert-Butyl Ether 2.7 U 0.31 2.7 UG/M3 2.7 U
BA_SG_01 TO-15 91-20-3 Naphthalene 0.69 J 0.64 2.7 UG/M3 0.69 J
BA_SG_01 TO-15 142-82-5 n-Heptane 5.7 0.42 2.6 UG/M3 5.7
BA_SG_01 TO-15 95-47-6 o-Xylene 6.7 0.38 2.6 UG/M3 6.7
BA_SG_01 TO-15 115-07-1 Propene 78 0.64 2.6 UG/M3 78
BA_SG_01 TO-15 100-42-5 Styrene 6.3 0.42 2.6 UG/M3 6.3
BA_SG_01 TO-15 127-18-4 Tetrachloroethene 6.1 0.34 2.6 UG/M3 6.1
BA_SG_01 TO-15 109-99-9 Tetrahydrofuran (THF)7.0 0.33 4.9 UG/M3 7.0
BA_SG_01 TO-15 108-88-3 Toluene 29 0.32 2.6 UG/M3 29
BA_SG_01 TO-15 156-60-5 trans-1,2-Dichloroethene 2.7 U 0.36 2.7 UG/M3 2.7 U
BA_SG_01 TO-15 10061-02-6 trans-1,3-Dichloropropene 2.5 U 0.54 2.5 UG/M3 2.5 U
BA_SG_01 TO-15 79-01-6 Trichloroethene 2.6 U 0.35 2.6 UG/M3 2.6 U
BA_SG_01 TO-15 75-69-4 Trichlorofluoromethane 1.5 J 0.40 2.6 UG/M3 1.5 J
BA_SG_01 TO-15 108-05-4 Vinyl Acetate 25 U 5.9 25 UG/M3 25 U
BA_SG_01 TO-15 75-01-4 Vinyl Chloride 2.5 U 0.28 2.5 UG/M3 2.5 U
BA_SG_02 TO-15 71-55-6 1,1,1-Trichloroethane 3.3 U 0.41 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 79-34-5 1,1,2,2-Tetrachloroethane 3.3 U 0.46 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 79-00-5 1,1,2-Trichloroethane 3.3 U 0.33 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 76-13-1 1,1,2-Trichlorotrifluoroethane 3.3 U 0.47 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 75-34-3 1,1-Dichloroethane 3.3 U 0.48 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 75-35-4 1,1-Dichloroethene 3.3 U 0.46 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 120-82-1 1,2,4-Trichlorobenzene 6.8 U 0.80 6.8 UG/M3 6.8 U
BA_SG_02 TO-15 95-63-6 1,2,4-Trimethylbenzene 1.9 J 0.46 3.3 UG/M3 1.9 J
BA_SG_02 TO-15 106-93-4 1,2-Dibromoethane 3.2 U 0.38 3.2 UG/M3 3.2 U
BA_SG_02 TO-15 76-14-2 1,2-Dichloro-1,1,2,2-tetrafluoroethane (CFC 114)3.2 U 0.52 3.2 UG/M3 3.2 U
BA_SG_02 TO-15 95-50-1 1,2-Dichlorobenzene 3.3 U 0.49 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 107-06-2 1,2-Dichloroethane 3.3 U 0.36 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 78-87-5 1,2-Dichloropropane 3.3 U 0.41 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 108-67-8 1,3,5-Trimethylbenzene 3.3 U 0.47 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 106-99-0 1,3-Butadiene 1.3 J 0.54 3.3 UG/M3 1.3 J
BA_SG_02 TO-15 541-73-1 1,3-Dichlorobenzene 3.3 U 0.49 3.3 UG/M3 3.3 U
Page 2 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_02 TO-15 106-46-7 1,4-Dichlorobenzene 3.3 U 0.50 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 123-91-1 1,4-Dioxane 3.3 U 0.39 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 78-93-3 2-Butanone (MEK)5.9 J 0.68 6.4 UG/M3 5.9 J
BA_SG_02 TO-15 591-78-6 2-Hexanone 0.92 J 0.41 6.8 UG/M3 0.92 J
BA_SG_02 TO-15 67-63-0 2-Propanol (Isopropyl Alcohol)1.9 J 1.4 6.3 UG/M3 1.9 J
BA_SG_02 TO-15 622-96-8 4-Ethyltoluene 3.4 U 0.52 3.4 UG/M3 3.4 U
BA_SG_02 TO-15 108-10-1 4-Methyl-2-pentanone 1.1 J 0.45 6.8 UG/M3 1.1 J
BA_SG_02 TO-15 67-64-1 Acetone 65 7.4 32 UG/M3 65
BA_SG_02 TO-15 71-43-2 Benzene 3.3 J 0.47 3.3 UG/M3 3.3 J
BA_SG_02 TO-15 100-44-7 Benzyl Chloride 13 U 0.74 13 UG/M3 13 UJ
BA_SG_02 TO-15 75-27-4 Bromodichloromethane 0.64 J 0.47 3.3 UG/M3 0.64 J
BA_SG_02 TO-15 75-25-2 Bromoform 3.3 U 0.68 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 74-83-9 Bromomethane 3.1 U 0.46 3.1 UG/M3 3.1 U
BA_SG_02 TO-15 75-15-0 Carbon Disulfide 7.7 0.98 6.6 UG/M3 7.7
BA_SG_02 TO-15 56-23-5 Carbon Tetrachloride 3.2 U 0.46 3.2 UG/M3 3.2 U
BA_SG_02 TO-15 108-90-7 Chlorobenzene 3.3 U 0.44 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 75-00-3 Chloroethane 3.2 U 0.41 3.2 UG/M3 3.2 U
BA_SG_02 TO-15 67-66-3 Chloroform 22 0.44 3.3 UG/M3 22 J
BA_SG_02 TO-15 74-87-3 Chloromethane 1.0 J 0.53 3.2 UG/M3 1.0 J
BA_SG_02 TO-15 156-59-2 cis-1,2-Dichloroethene 3.3 U 0.46 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 10061-01-5 cis-1,3-Dichloropropene 3.3 U 0.51 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 98-82-8 Cumene 3.3 U 0.47 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 110-82-7 Cyclohexane 6.5 U 0.92 6.5 UG/M3 6.5 U
BA_SG_02 TO-15 124-48-1 Dibromochloromethane 3.3 U 0.43 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 75-71-8 Dichlorodifluoromethane (CFC 12)1.6 J 0.54 3.3 UG/M3 1.6 J
BA_SG_02 TO-15 75-09-2 Dichloromethane (Methylene Chloride)3.3 U 0.92 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 141-78-6 Ethyl Acetate 13 U 1.7 13 UG/M3 13 U
BA_SG_02 TO-15 100-41-4 Ethylbenzene 1.9 J 0.46 3.3 UG/M3 1.9 J
BA_SG_02 TO-15 87-68-3 Hexachlorobutadiene 3.3 U 0.68 3.3 UG/M3 3.3 UJ
BA_SG_02 TO-15 110-54-3 Hexane 1.6 J 0.68 3.3 UG/M3 1.6 J
BA_SG_02 TO-15 179601-23-1 m,p-Xylenes 9.6 0.86 6.8 UG/M3 9.6
BA_SG_02 TO-15 1634-04-4 Methyl tert-Butyl Ether 3.3 U 0.39 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 91-20-3 Naphthalene 3.4 U 0.80 3.4 UG/M3 3.4 U
BA_SG_02 TO-15 142-82-5 n-Heptane 3.3 U 0.52 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 95-47-6 o-Xylene 3.8 0.47 3.3 UG/M3 3.8
BA_SG_02 TO-15 115-07-1 Propene 24 0.80 3.3 UG/M3 24 J
BA_SG_02 TO-15 100-42-5 Styrene 0.62 J 0.53 3.3 UG/M3 0.62 J
BA_SG_02 TO-15 127-18-4 Tetrachloroethene 250 0.42 3.3 UG/M3 250 J
BA_SG_02 TO-15 109-99-9 Tetrahydrofuran (THF)1.6 J 0.41 6.2 UG/M3 1.6 J
Page 3 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_02 TO-15 108-88-3 Toluene 4.1 0.40 3.3 UG/M3 4.1
BA_SG_02 TO-15 156-60-5 trans-1,2-Dichloroethene 3.3 U 0.46 3.3 UG/M3 3.3 U
BA_SG_02 TO-15 10061-02-6 trans-1,3-Dichloropropene 3.1 U 0.68 3.1 UG/M3 3.1 U
BA_SG_02 TO-15 79-01-6 Trichloroethene 6.5 0.44 3.3 UG/M3 6.5 J
BA_SG_02 TO-15 75-69-4 Trichlorofluoromethane 0.93 J 0.50 3.2 UG/M3 0.93 J
BA_SG_02 TO-15 108-05-4 Vinyl Acetate 31 U 7.4 31 UG/M3 31 U
BA_SG_02 TO-15 75-01-4 Vinyl Chloride 3.1 U 0.35 3.1 UG/M3 3.1 U
BA_SG_02DUP TO-15 71-55-6 1,1,1-Trichloroethane 2.6 U 0.32 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 79-34-5 1,1,2,2-Tetrachloroethane 2.6 U 0.36 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 79-00-5 1,1,2-Trichloroethane 2.6 U 0.26 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 76-13-1 1,1,2-Trichlorotrifluoroethane 2.6 U 0.37 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 75-34-3 1,1-Dichloroethane 2.6 U 0.38 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 75-35-4 1,1-Dichloroethene 2.6 U 0.36 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 120-82-1 1,2,4-Trichlorobenzene 5.3 U 0.63 5.3 UG/M3 5.3 U
BA_SG_02DUP TO-15 95-63-6 1,2,4-Trimethylbenzene 1.6 J 0.36 2.6 UG/M3 1.6 J
BA_SG_02DUP TO-15 106-93-4 1,2-Dibromoethane 2.5 U 0.30 2.5 UG/M3 2.5 U
BA_SG_02DUP TO-15 76-14-2 1,2-Dichloro-1,1,2,2-tetrafluoroethane (CFC 114)2.5 U 0.41 2.5 UG/M3 2.5 U
BA_SG_02DUP TO-15 95-50-1 1,2-Dichlorobenzene 2.6 U 0.38 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 107-06-2 1,2-Dichloroethane 2.6 U 0.29 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 78-87-5 1,2-Dichloropropane 2.6 U 0.32 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 108-67-8 1,3,5-Trimethylbenzene 2.6 U 0.37 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 106-99-0 1,3-Butadiene 0.77 J 0.43 2.6 UG/M3 0.77 J
BA_SG_02DUP TO-15 541-73-1 1,3-Dichlorobenzene 2.6 U 0.39 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 106-46-7 1,4-Dichlorobenzene 2.6 U 0.40 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 123-91-1 1,4-Dioxane 2.6 U 0.31 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 78-93-3 2-Butanone (MEK)4.6 J 0.53 5.0 UG/M3 4.6 J
BA_SG_02DUP TO-15 591-78-6 2-Hexanone 1.0 J 0.32 5.3 UG/M3 1.0 J
BA_SG_02DUP TO-15 67-63-0 2-Propanol (Isopropyl Alcohol)3.0 J 1.1 5.0 UG/M3 3.0 J
BA_SG_02DUP TO-15 622-96-8 4-Ethyltoluene 0.42 J 0.41 2.7 UG/M3 0.42 J
BA_SG_02DUP TO-15 108-10-1 4-Methyl-2-pentanone 0.74 J 0.35 5.3 UG/M3 0.74 J
BA_SG_02DUP TO-15 67-64-1 Acetone 53 5.8 26 UG/M3 53
BA_SG_02DUP TO-15 71-43-2 Benzene 2.3 J 0.37 2.6 UG/M3 2.3 J
BA_SG_02DUP TO-15 100-44-7 Benzyl Chloride 10 U 0.58 10 UG/M3 10 UJ
BA_SG_02DUP TO-15 75-27-4 Bromodichloromethane 0.40 J 0.37 2.6 UG/M3 0.40 J
BA_SG_02DUP TO-15 75-25-2 Bromoform 2.6 U 0.53 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 74-83-9 Bromomethane 2.5 U 0.36 2.5 UG/M3 2.5 U
BA_SG_02DUP TO-15 75-15-0 Carbon Disulfide 8.1 0.78 5.2 UG/M3 8.1
BA_SG_02DUP TO-15 56-23-5 Carbon Tetrachloride 2.5 U 0.36 2.5 UG/M3 2.5 U
BA_SG_02DUP TO-15 108-90-7 Chlorobenzene 2.6 U 0.34 2.6 UG/M3 2.6 U
Page 4 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_02DUP TO-15 75-00-3 Chloroethane 2.5 U 0.32 2.5 UG/M3 2.5 U
BA_SG_02DUP TO-15 67-66-3 Chloroform 12 0.34 2.6 UG/M3 12 J
BA_SG_02DUP TO-15 74-87-3 Chloromethane 0.77 J 0.42 2.5 UG/M3 0.77 J
BA_SG_02DUP TO-15 156-59-2 cis-1,2-Dichloroethene 2.6 U 0.36 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 10061-01-5 cis-1,3-Dichloropropene 2.6 U 0.40 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 98-82-8 Cumene 2.6 U 0.37 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 110-82-7 Cyclohexane 5.1 U 0.73 5.1 UG/M3 5.1 U
BA_SG_02DUP TO-15 124-48-1 Dibromochloromethane 2.6 U 0.34 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 75-71-8 Dichlorodifluoromethane (CFC 12)1.8 J 0.42 2.6 UG/M3 1.8 J
BA_SG_02DUP TO-15 75-09-2 Dichloromethane (Methylene Chloride)2.6 U 0.73 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 141-78-6 Ethyl Acetate 4.0 J 1.4 10 UG/M3 4.0 J
BA_SG_02DUP TO-15 100-41-4 Ethylbenzene 1.2 J 0.36 2.6 UG/M3 1.2 J
BA_SG_02DUP TO-15 87-68-3 Hexachlorobutadiene 2.6 U 0.53 2.6 UG/M3 2.6 UJ
BA_SG_02DUP TO-15 110-54-3 Hexane 1.5 J 0.53 2.6 UG/M3 1.5 J
BA_SG_02DUP TO-15 179601-23-1 m,p-Xylenes 5.8 0.68 5.3 UG/M3 5.8
BA_SG_02DUP TO-15 1634-04-4 Methyl tert-Butyl Ether 2.6 U 0.31 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 91-20-3 Naphthalene 2.7 U 0.63 2.7 UG/M3 2.7 U
BA_SG_02DUP TO-15 142-82-5 n-Heptane 0.54 J 0.41 2.6 UG/M3 0.54 J
BA_SG_02DUP TO-15 95-47-6 o-Xylene 2.2 J 0.37 2.6 UG/M3 2.2 J
BA_SG_02DUP TO-15 115-07-1 Propene 14 0.63 2.6 UG/M3 14 J
BA_SG_02DUP TO-15 100-42-5 Styrene 2.6 U 0.42 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 127-18-4 Tetrachloroethene 110 0.33 2.6 UG/M3 110 J
BA_SG_02DUP TO-15 109-99-9 Tetrahydrofuran (THF)1.1 J 0.32 4.9 UG/M3 1.1 J
BA_SG_02DUP TO-15 108-88-3 Toluene 3.5 0.32 2.6 UG/M3 3.5
BA_SG_02DUP TO-15 156-60-5 trans-1,2-Dichloroethene 2.6 U 0.36 2.6 UG/M3 2.6 U
BA_SG_02DUP TO-15 10061-02-6 trans-1,3-Dichloropropene 2.5 U 0.53 2.5 UG/M3 2.5 U
BA_SG_02DUP TO-15 79-01-6 Trichloroethene 3.3 0.35 2.6 UG/M3 3.3 J
BA_SG_02DUP TO-15 75-69-4 Trichlorofluoromethane 0.92 J 0.39 2.5 UG/M3 0.92 J
BA_SG_02DUP TO-15 108-05-4 Vinyl Acetate 24 U 5.8 24 UG/M3 24 U
BA_SG_02DUP TO-15 75-01-4 Vinyl Chloride 2.5 U 0.28 2.5 UG/M3 2.5 U
BA_SG_04 TO-15 71-55-6 1,1,1-Trichloroethane 2.9 U 0.36 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 79-34-5 1,1,2,2-Tetrachloroethane 2.9 U 0.40 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 79-00-5 1,1,2-Trichloroethane 2.9 U 0.29 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 76-13-1 1,1,2-Trichlorotrifluoroethane 2.9 U 0.41 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 75-34-3 1,1-Dichloroethane 2.9 U 0.42 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 75-35-4 1,1-Dichloroethene 2.9 U 0.40 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 120-82-1 1,2,4-Trichlorobenzene 5.9 U 0.70 5.9 UG/M3 5.9 U
BA_SG_04 TO-15 95-63-6 1,2,4-Trimethylbenzene 11 0.40 2.9 UG/M3 11
BA_SG_04 TO-15 106-93-4 1,2-Dibromoethane 2.8 U 0.33 2.8 UG/M3 2.8 U
Page 5 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_04 TO-15 76-14-2 1,2-Dichloro-1,1,2,2-tetrafluoroethane (CFC 114)2.8 U 0.45 2.8 UG/M3 2.8 U
BA_SG_04 TO-15 95-50-1 1,2-Dichlorobenzene 2.9 U 0.43 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 107-06-2 1,2-Dichloroethane 2.9 U 0.32 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 78-87-5 1,2-Dichloropropane 2.9 U 0.36 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 108-67-8 1,3,5-Trimethylbenzene 3.4 0.42 2.9 UG/M3 3.4
BA_SG_04 TO-15 106-99-0 1,3-Butadiene 7.5 0.48 2.9 UG/M3 7.5
BA_SG_04 TO-15 541-73-1 1,3-Dichlorobenzene 2.9 U 0.43 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 106-46-7 1,4-Dichlorobenzene 2.9 U 0.44 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 123-91-1 1,4-Dioxane 0.45 J 0.34 2.9 UG/M3 0.45 J
BA_SG_04 TO-15 78-93-3 2-Butanone (MEK)27 0.59 5.6 UG/M3 27
BA_SG_04 TO-15 591-78-6 2-Hexanone 7.0 0.36 5.9 UG/M3 7.0
BA_SG_04 TO-15 67-63-0 2-Propanol (Isopropyl Alcohol)37 1.2 5.5 UG/M3 37
BA_SG_04 TO-15 622-96-8 4-Ethyltoluene 2.7 J 0.46 3.0 UG/M3 2.7 J
BA_SG_04 TO-15 108-10-1 4-Methyl-2-pentanone 14 0.39 5.9 UG/M3 14
BA_SG_04 TO-15 67-64-1 Acetone 200 6.5 28 UG/M3 200
BA_SG_04 TO-15 71-43-2 Benzene 7.1 0.42 2.9 UG/M3 7.1
BA_SG_04 TO-15 100-44-7 Benzyl Chloride 11 U 0.65 11 UG/M3 11 UJ
BA_SG_04 TO-15 75-27-4 Bromodichloromethane 2.9 U 0.42 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 75-25-2 Bromoform 2.9 U 0.59 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 74-83-9 Bromomethane 0.44 J 0.40 2.8 UG/M3 0.44 J
BA_SG_04 TO-15 75-15-0 Carbon Disulfide 13 0.86 5.8 UG/M3 13
BA_SG_04 TO-15 56-23-5 Carbon Tetrachloride 2.8 U 0.40 2.8 UG/M3 2.8 U
BA_SG_04 TO-15 108-90-7 Chlorobenzene 0.43 J 0.38 2.9 UG/M3 0.43 J
BA_SG_04 TO-15 75-00-3 Chloroethane 2.8 U 0.36 2.8 UG/M3 2.8 U
BA_SG_04 TO-15 67-66-3 Chloroform 9.5 0.38 2.9 UG/M3 9.5
BA_SG_04 TO-15 74-87-3 Chloromethane 2.8 U 0.46 2.8 UG/M3 2.8 U
BA_SG_04 TO-15 156-59-2 cis-1,2-Dichloroethene 2.9 U 0.41 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 10061-01-5 cis-1,3-Dichloropropene 2.9 U 0.45 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 98-82-8 Cumene 0.93 J 0.42 2.9 UG/M3 0.93 J
BA_SG_04 TO-15 110-82-7 Cyclohexane 1.5 J 0.81 5.7 UG/M3 1.5 J
BA_SG_04 TO-15 124-48-1 Dibromochloromethane 2.9 U 0.38 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 75-71-8 Dichlorodifluoromethane (CFC 12)1.8 J 0.47 2.9 UG/M3 1.8 J
BA_SG_04 TO-15 75-09-2 Dichloromethane (Methylene Chloride)2.9 U 0.81 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 141-78-6 Ethyl Acetate 20 1.5 11 UG/M3 20
BA_SG_04 TO-15 100-41-4 Ethylbenzene 3.1 0.41 2.9 UG/M3 3.1
BA_SG_04 TO-15 87-68-3 Hexachlorobutadiene 2.9 U 0.59 2.9 UG/M3 2.9 UJ
BA_SG_04 TO-15 110-54-3 Hexane 4.8 0.59 2.9 UG/M3 4.8
BA_SG_04 TO-15 179601-23-1 m,p-Xylenes 9.4 0.76 5.9 UG/M3 9.4
BA_SG_04 TO-15 1634-04-4 Methyl tert-Butyl Ether 2.9 U 0.34 2.9 UG/M3 2.9 U
Page 6 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_04 TO-15 91-20-3 Naphthalene 0.84 J 0.70 3.0 UG/M3 0.84 J
BA_SG_04 TO-15 142-82-5 n-Heptane 3.8 0.46 2.9 UG/M3 3.8
BA_SG_04 TO-15 95-47-6 o-Xylene 4.0 0.42 2.9 UG/M3 4.0
BA_SG_04 TO-15 115-07-1 Propene 34 0.70 2.9 UG/M3 34
BA_SG_04 TO-15 100-42-5 Styrene 3.5 0.46 2.9 UG/M3 3.5
BA_SG_04 TO-15 127-18-4 Tetrachloroethene 220 0.37 2.9 UG/M3 220
BA_SG_04 TO-15 109-99-9 Tetrahydrofuran (THF)6.7 0.36 5.4 UG/M3 6.7
BA_SG_04 TO-15 108-88-3 Toluene 15 0.35 2.9 UG/M3 15
BA_SG_04 TO-15 156-60-5 trans-1,2-Dichloroethene 2.9 U 0.40 2.9 UG/M3 2.9 U
BA_SG_04 TO-15 10061-02-6 trans-1,3-Dichloropropene 2.8 U 0.59 2.8 UG/M3 2.8 U
BA_SG_04 TO-15 79-01-6 Trichloroethene 3.5 0.39 2.9 UG/M3 3.5
BA_SG_04 TO-15 75-69-4 Trichlorofluoromethane 1.5 J 0.44 2.8 UG/M3 1.5 J
BA_SG_04 TO-15 108-05-4 Vinyl Acetate 27 U 6.5 27 UG/M3 27 U
BA_SG_04 TO-15 75-01-4 Vinyl Chloride 2.8 U 0.31 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 71-55-6 1,1,1-Trichloroethane 2.8 U 0.35 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 79-34-5 1,1,2,2-Tetrachloroethane 2.8 U 0.40 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 79-00-5 1,1,2-Trichloroethane 2.8 U 0.29 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 76-13-1 1,1,2-Trichlorotrifluoroethane 2.9 U 0.41 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 75-34-3 1,1-Dichloroethane 2.9 U 0.42 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 75-35-4 1,1-Dichloroethene 2.9 U 0.40 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 120-82-1 1,2,4-Trichlorobenzene 5.9 U 0.70 5.9 UG/M3 5.9 U
BA_SG_05 TO-15 95-63-6 1,2,4-Trimethylbenzene 4.7 0.40 2.8 UG/M3 4.7
BA_SG_05 TO-15 106-93-4 1,2-Dibromoethane 2.8 U 0.33 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 76-14-2 1,2-Dichloro-1,1,2,2-tetrafluoroethane (CFC 114)2.8 U 0.45 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 95-50-1 1,2-Dichlorobenzene 2.9 U 0.42 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 107-06-2 1,2-Dichloroethane 2.9 U 0.32 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 78-87-5 1,2-Dichloropropane 2.8 U 0.35 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 108-67-8 1,3,5-Trimethylbenzene 1.6 J 0.41 2.8 UG/M3 1.6 J
BA_SG_05 TO-15 106-99-0 1,3-Butadiene 180 0.47 2.8 UG/M3 180
BA_SG_05 TO-15 541-73-1 1,3-Dichlorobenzene 2.8 U 0.43 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 106-46-7 1,4-Dichlorobenzene 2.8 U 0.44 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 123-91-1 1,4-Dioxane 2.8 U 0.34 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 78-93-3 2-Butanone (MEK)25 0.59 5.6 UG/M3 25
BA_SG_05 TO-15 591-78-6 2-Hexanone 5.9 U 0.35 5.9 UG/M3 5.9 U
BA_SG_05 TO-15 67-63-0 2-Propanol (Isopropyl Alcohol)10 1.2 5.5 UG/M3 10
BA_SG_05 TO-15 622-96-8 4-Ethyltoluene 1.5 J 0.45 2.9 UG/M3 1.5 J
BA_SG_05 TO-15 108-10-1 4-Methyl-2-pentanone 14 0.39 5.9 UG/M3 14
BA_SG_05 TO-15 67-64-1 Acetone 150 6.4 28 UG/M3 150
BA_SG_05 TO-15 71-43-2 Benzene 36 0.41 2.9 UG/M3 36
Page 7 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_05 TO-15 100-44-7 Benzyl Chloride 11 U 0.64 11 UG/M3 11 UJ
BA_SG_05 TO-15 75-27-4 Bromodichloromethane 2.9 U 0.41 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 75-25-2 Bromoform 2.9 U 0.59 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 74-83-9 Bromomethane 2.7 U 0.40 2.7 UG/M3 2.7 U
BA_SG_05 TO-15 75-15-0 Carbon Disulfide 20 0.86 5.7 UG/M3 20
BA_SG_05 TO-15 56-23-5 Carbon Tetrachloride 2.8 U 0.40 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 108-90-7 Chlorobenzene 0.49 J 0.38 2.8 UG/M3 0.49 J
BA_SG_05 TO-15 75-00-3 Chloroethane 0.54 J 0.35 2.8 UG/M3 0.54 J
BA_SG_05 TO-15 67-66-3 Chloroform 3.7 0.38 2.8 UG/M3 3.7
BA_SG_05 TO-15 74-87-3 Chloromethane 7.2 0.46 2.8 UG/M3 7.2
BA_SG_05 TO-15 156-59-2 cis-1,2-Dichloroethene 2.8 U 0.40 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 10061-01-5 cis-1,3-Dichloropropene 2.9 U 0.44 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 98-82-8 Cumene 0.66 J 0.41 2.9 UG/M3 0.66 J
BA_SG_05 TO-15 110-82-7 Cyclohexane 5.6 J 0.80 5.6 UG/M3 5.6 J
BA_SG_05 TO-15 124-48-1 Dibromochloromethane 2.9 U 0.37 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 75-71-8 Dichlorodifluoromethane (CFC 12)1.4 J 0.47 2.8 UG/M3 1.4 J
BA_SG_05 TO-15 75-09-2 Dichloromethane (Methylene Chloride)2.8 U 0.80 2.8 UG/M3 2.8 U
BA_SG_05 TO-15 141-78-6 Ethyl Acetate 11 U 1.5 11 UG/M3 11 U
BA_SG_05 TO-15 100-41-4 Ethylbenzene 4.6 0.40 2.8 UG/M3 4.6
BA_SG_05 TO-15 87-68-3 Hexachlorobutadiene 2.8 U 0.59 2.8 UG/M3 2.8 UJ
BA_SG_05 TO-15 110-54-3 Hexane 340 0.59 2.8 UG/M3 340
BA_SG_05 TO-15 179601-23-1 m,p-Xylenes 9.5 0.75 5.9 UG/M3 9.5
BA_SG_05 TO-15 1634-04-4 Methyl tert-Butyl Ether 2.9 U 0.34 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 91-20-3 Naphthalene 2.9 U 0.70 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 142-82-5 n-Heptane 180 0.45 2.8 UG/M3 180
BA_SG_05 TO-15 95-47-6 o-Xylene 4.1 0.41 2.8 UG/M3 4.1
BA_SG_05 TO-15 115-07-1 Propene 1300 D 7.0 28 UG/M3 1300
BA_SG_05 TO-15 100-42-5 Styrene 2.9 0.46 2.8 UG/M3 2.9
BA_SG_05 TO-15 127-18-4 Tetrachloroethene 57 0.37 2.8 UG/M3 57
BA_SG_05 TO-15 109-99-9 Tetrahydrofuran (THF)5.4 U 0.36 5.4 UG/M3 5.4 U
BA_SG_05 TO-15 108-88-3 Toluene 27 0.35 2.8 UG/M3 27
BA_SG_05 TO-15 156-60-5 trans-1,2-Dichloroethene 2.9 U 0.40 2.9 UG/M3 2.9 U
BA_SG_05 TO-15 10061-02-6 trans-1,3-Dichloropropene 2.7 U 0.59 2.7 UG/M3 2.7 U
BA_SG_05 TO-15 79-01-6 Trichloroethene 0.64 J 0.39 2.8 UG/M3 0.64 J
BA_SG_05 TO-15 75-69-4 Trichlorofluoromethane 0.82 J 0.43 2.8 UG/M3 0.82 J
BA_SG_05 TO-15 108-05-4 Vinyl Acetate 27 U 6.4 27 UG/M3 27 U
BA_SG_05 TO-15 75-01-4 Vinyl Chloride 2.2 J 0.30 2.7 UG/M3 2.2 J
BA_SG_06 TO-15 71-55-6 1,1,1-Trichloroethane 2.6 U 0.32 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 79-34-5 1,1,2,2-Tetrachloroethane 2.6 U 0.36 2.6 UG/M3 2.6 U
Page 8 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_06 TO-15 79-00-5 1,1,2-Trichloroethane 2.6 U 0.26 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 76-13-1 1,1,2-Trichlorotrifluoroethane 2.6 U 0.37 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 75-34-3 1,1-Dichloroethane 2.6 U 0.38 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 75-35-4 1,1-Dichloroethene 2.6 U 0.36 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 120-82-1 1,2,4-Trichlorobenzene 5.4 U 0.64 5.4 UG/M3 5.4 U
BA_SG_06 TO-15 95-63-6 1,2,4-Trimethylbenzene 11 0.36 2.6 UG/M3 11
BA_SG_06 TO-15 106-93-4 1,2-Dibromoethane 2.5 U 0.30 2.5 UG/M3 2.5 U
BA_SG_06 TO-15 76-14-2 1,2-Dichloro-1,1,2,2-tetrafluoroethane (CFC 114)2.5 U 0.41 2.5 UG/M3 2.5 U
BA_SG_06 TO-15 95-50-1 1,2-Dichlorobenzene 2.6 U 0.39 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 107-06-2 1,2-Dichloroethane 2.6 U 0.29 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 78-87-5 1,2-Dichloropropane 2.6 U 0.32 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 108-67-8 1,3,5-Trimethylbenzene 3.6 0.38 2.6 UG/M3 3.6
BA_SG_06 TO-15 106-99-0 1,3-Butadiene 29 0.43 2.6 UG/M3 29
BA_SG_06 TO-15 541-73-1 1,3-Dichlorobenzene 2.6 U 0.39 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 106-46-7 1,4-Dichlorobenzene 2.6 U 0.40 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 123-91-1 1,4-Dioxane 2.6 U 0.31 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 78-93-3 2-Butanone (MEK)56 0.54 5.1 UG/M3 56
BA_SG_06 TO-15 591-78-6 2-Hexanone 6.8 0.32 5.4 UG/M3 6.8
BA_SG_06 TO-15 67-63-0 2-Propanol (Isopropyl Alcohol)31 1.1 5.0 UG/M3 31
BA_SG_06 TO-15 622-96-8 4-Ethyltoluene 3.1 0.42 2.7 UG/M3 3.1
BA_SG_06 TO-15 108-10-1 4-Methyl-2-pentanone 13 0.36 5.4 UG/M3 13
BA_SG_06 TO-15 67-64-1 Acetone 360 5.9 26 UG/M3 360
BA_SG_06 TO-15 71-43-2 Benzene 27 0.38 2.6 UG/M3 27
BA_SG_06 TO-15 100-44-7 Benzyl Chloride 10 U 0.59 10 UG/M3 10 UJ
BA_SG_06 TO-15 75-27-4 Bromodichloromethane 2.6 U 0.38 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 75-25-2 Bromoform 2.6 U 0.54 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 74-83-9 Bromomethane 2.5 U 0.36 2.5 UG/M3 2.5 U
BA_SG_06 TO-15 75-15-0 Carbon Disulfide 20 0.78 5.2 UG/M3 20
BA_SG_06 TO-15 56-23-5 Carbon Tetrachloride 2.5 U 0.36 2.5 UG/M3 2.5 U
BA_SG_06 TO-15 108-90-7 Chlorobenzene 0.46 J 0.35 2.6 UG/M3 0.46 J
BA_SG_06 TO-15 75-00-3 Chloroethane 0.40 J 0.32 2.5 UG/M3 0.40 J
BA_SG_06 TO-15 67-66-3 Chloroform 12 0.35 2.6 UG/M3 12
BA_SG_06 TO-15 74-87-3 Chloromethane 5.9 0.42 2.5 UG/M3 5.9
BA_SG_06 TO-15 156-59-2 cis-1,2-Dichloroethene 2.4 J 0.37 2.6 UG/M3 2.4 J
BA_SG_06 TO-15 10061-01-5 cis-1,3-Dichloropropene 2.6 U 0.41 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 98-82-8 Cumene 1.2 J 0.38 2.6 UG/M3 1.2 J
BA_SG_06 TO-15 110-82-7 Cyclohexane 8.1 0.74 5.1 UG/M3 8.1
BA_SG_06 TO-15 124-48-1 Dibromochloromethane 2.6 U 0.34 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 75-71-8 Dichlorodifluoromethane (CFC 12)1.8 J 0.43 2.6 UG/M3 1.8 J
Page 9 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_06 TO-15 75-09-2 Dichloromethane (Methylene Chloride)2.6 U 0.74 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 141-78-6 Ethyl Acetate 38 1.4 10 UG/M3 38
BA_SG_06 TO-15 100-41-4 Ethylbenzene 6.4 0.37 2.6 UG/M3 6.4
BA_SG_06 TO-15 87-68-3 Hexachlorobutadiene 2.6 U 0.54 2.6 UG/M3 2.6 UJ
BA_SG_06 TO-15 110-54-3 Hexane 34 0.54 2.6 UG/M3 34
BA_SG_06 TO-15 179601-23-1 m,p-Xylenes 18 0.69 5.4 UG/M3 18
BA_SG_06 TO-15 1634-04-4 Methyl tert-Butyl Ether 2.6 U 0.31 2.6 UG/M3 2.6 U
BA_SG_06 TO-15 91-20-3 Naphthalene 2.7 U 0.64 2.7 UG/M3 2.7 U
BA_SG_06 TO-15 142-82-5 n-Heptane 26 0.42 2.6 UG/M3 26
BA_SG_06 TO-15 95-47-6 o-Xylene 6.6 0.38 2.6 UG/M3 6.6
BA_SG_06 TO-15 115-07-1 Propene 130 0.64 2.6 UG/M3 130
BA_SG_06 TO-15 100-42-5 Styrene 5.6 0.42 2.6 UG/M3 5.6
BA_SG_06 TO-15 127-18-4 Tetrachloroethene 720 D 3.4 26 UG/M3 720
BA_SG_06 TO-15 109-99-9 Tetrahydrofuran (THF)6.7 0.33 4.9 UG/M3 6.7
BA_SG_06 TO-15 108-88-3 Toluene 40 0.32 2.6 UG/M3 40
BA_SG_06 TO-15 156-60-5 trans-1,2-Dichloroethene 0.73 J 0.36 2.6 UG/M3 0.73 J
BA_SG_06 TO-15 10061-02-6 trans-1,3-Dichloropropene 2.5 U 0.54 2.5 UG/M3 2.5 U
BA_SG_06 TO-15 79-01-6 Trichloroethene 410 0.35 2.6 UG/M3 410
BA_SG_06 TO-15 75-69-4 Trichlorofluoromethane 1.3 J 0.40 2.5 UG/M3 1.3 J
BA_SG_06 TO-15 108-05-4 Vinyl Acetate 25 U 5.9 25 UG/M3 25 U
BA_SG_06 TO-15 75-01-4 Vinyl Chloride 0.75 J 0.28 2.5 UG/M3 0.75 J
BA_SG_08 TO-15 71-55-6 1,1,1-Trichloroethane 2.6 U 0.33 2.6 UG/M3 2.6 U
BA_SG_08 TO-15 79-34-5 1,1,2,2-Tetrachloroethane 2.6 U 0.36 2.6 UG/M3 2.6 U
BA_SG_08 TO-15 79-00-5 1,1,2-Trichloroethane 2.6 U 0.27 2.6 UG/M3 2.6 U
BA_SG_08 TO-15 76-13-1 1,1,2-Trichlorotrifluoroethane 0.45 J 0.37 2.7 UG/M3 0.45 J
BA_SG_08 TO-15 75-34-3 1,1-Dichloroethane 2.7 U 0.38 2.7 UG/M3 2.7 U
BA_SG_08 TO-15 75-35-4 1,1-Dichloroethene 2.7 U 0.36 2.7 UG/M3 2.7 U
BA_SG_08 TO-15 120-82-1 1,2,4-Trichlorobenzene 5.4 U 0.64 5.4 UG/M3 5.4 UJ
BA_SG_08 TO-15 95-63-6 1,2,4-Trimethylbenzene 16 0.36 2.6 UG/M3 16
BA_SG_08 TO-15 106-93-4 1,2-Dibromoethane 2.6 U 0.31 2.6 UG/M3 2.6 U
BA_SG_08 TO-15 76-14-2 1,2-Dichloro-1,1,2,2-tetrafluoroethane (CFC 114)2.6 U 0.41 2.6 UG/M3 2.6 UJ
BA_SG_08 TO-15 95-50-1 1,2-Dichlorobenzene 2.7 U 0.39 2.7 UG/M3 2.7 UJ
BA_SG_08 TO-15 107-06-2 1,2-Dichloroethane 2.7 U 0.29 2.7 UG/M3 2.7 U
BA_SG_08 TO-15 78-87-5 1,2-Dichloropropane 2.6 U 0.33 2.6 UG/M3 2.6 U
BA_SG_08 TO-15 108-67-8 1,3,5-Trimethylbenzene 4.5 0.38 2.6 UG/M3 4.5
BA_SG_08 TO-15 106-99-0 1,3-Butadiene 17 0.43 2.6 UG/M3 17
BA_SG_08 TO-15 541-73-1 1,3-Dichlorobenzene 2.6 U 0.39 2.6 UG/M3 2.6 UJ
BA_SG_08 TO-15 106-46-7 1,4-Dichlorobenzene 2.6 U 0.40 2.6 UG/M3 2.6 UJ
BA_SG_08 TO-15 123-91-1 1,4-Dioxane 1.7 J 0.31 2.6 UG/M3 1.7 J
Page 10 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_08 TO-15 78-93-3 2-Butanone (MEK)57 0.54 5.1 UG/M3 57
BA_SG_08 TO-15 591-78-6 2-Hexanone 10 0.33 5.4 UG/M3 10
BA_SG_08 TO-15 67-63-0 2-Propanol (Isopropyl Alcohol)35 1.1 5.0 UG/M3 35
BA_SG_08 TO-15 622-96-8 4-Ethyltoluene 3.8 0.42 2.7 UG/M3 3.8
BA_SG_08 TO-15 108-10-1 4-Methyl-2-pentanone 14 0.36 5.4 UG/M3 14
BA_SG_08 TO-15 67-64-1 Acetone 370 5.9 26 UG/M3 370
BA_SG_08 TO-15 71-43-2 Benzene 46 0.38 2.7 UG/M3 46
BA_SG_08 TO-15 100-44-7 Benzyl Chloride 10 U 0.59 10 UG/M3 10 U
BA_SG_08 TO-15 75-27-4 Bromodichloromethane 2.7 U 0.38 2.7 UG/M3 2.7 U
BA_SG_08 TO-15 75-25-2 Bromoform 2.7 U 0.54 2.7 UG/M3 2.7 U
BA_SG_08 TO-15 74-83-9 Bromomethane 2.5 U 0.36 2.5 UG/M3 2.5 U
BA_SG_08 TO-15 75-15-0 Carbon Disulfide 29 0.79 5.3 UG/M3 29
BA_SG_08 TO-15 56-23-5 Carbon Tetrachloride 2.6 U 0.36 2.6 UG/M3 2.6 U
BA_SG_08 TO-15 108-90-7 Chlorobenzene 0.58 J 0.35 2.6 UG/M3 0.58 J-
BA_SG_08 TO-15 75-00-3 Chloroethane 2.6 U 0.33 2.6 UG/M3 2.6 U
BA_SG_08 TO-15 67-66-3 Chloroform 2.6 U 0.35 2.6 UG/M3 2.6 U
BA_SG_08 TO-15 74-87-3 Chloromethane 3.1 0.42 2.6 UG/M3 3.1
BA_SG_08 TO-15 156-59-2 cis-1,2-Dichloroethene 2.6 U 0.37 2.6 UG/M3 2.6 U
BA_SG_08 TO-15 10061-01-5 cis-1,3-Dichloropropene 2.7 U 0.41 2.7 UG/M3 2.7 U
BA_SG_08 TO-15 98-82-8 Cumene 1.5 J 0.38 2.7 UG/M3 1.5 J
BA_SG_08 TO-15 110-82-7 Cyclohexane 15 0.74 5.2 UG/M3 15
BA_SG_08 TO-15 124-48-1 Dibromochloromethane 2.7 U 0.34 2.7 UG/M3 2.7 U
BA_SG_08 TO-15 75-71-8 Dichlorodifluoromethane (CFC 12)2.1 J 0.43 2.6 UG/M3 2.1 J
BA_SG_08 TO-15 75-09-2 Dichloromethane (Methylene Chloride)2.6 U 0.74 2.6 UG/M3 2.6 U
BA_SG_08 TO-15 141-78-6 Ethyl Acetate 56 1.4 10 UG/M3 56
BA_SG_08 TO-15 100-41-4 Ethylbenzene 5.1 0.37 2.6 UG/M3 5.1
BA_SG_08 TO-15 87-68-3 Hexachlorobutadiene 2.6 U 0.54 2.6 UG/M3 2.6 UJ
BA_SG_08 TO-15 110-54-3 Hexane 24 0.54 2.6 UG/M3 24
BA_SG_08 TO-15 179601-23-1 m,p-Xylenes 18 0.69 5.4 UG/M3 18
BA_SG_08 TO-15 1634-04-4 Methyl tert-Butyl Ether 2.7 U 0.31 2.7 UG/M3 2.7 U
BA_SG_08 TO-15 91-20-3 Naphthalene 0.66 J 0.64 2.7 UG/M3 0.66 J-
BA_SG_08 TO-15 142-82-5 n-Heptane 9.6 0.42 2.6 UG/M3 9.6
BA_SG_08 TO-15 95-47-6 o-Xylene 7.4 0.38 2.6 UG/M3 7.4
BA_SG_08 TO-15 115-07-1 Propene 290 0.64 2.6 UG/M3 290
BA_SG_08 TO-15 100-42-5 Styrene 6.4 0.42 2.6 UG/M3 6.4
BA_SG_08 TO-15 127-18-4 Tetrachloroethene 3700 D 3.4 26 UG/M3 3700
BA_SG_08 TO-15 109-99-9 Tetrahydrofuran (THF)8.3 0.33 4.9 UG/M3 8.3
BA_SG_08 TO-15 108-88-3 Toluene 39 0.32 2.6 UG/M3 39
BA_SG_08 TO-15 156-60-5 trans-1,2-Dichloroethene 2.7 U 0.36 2.7 UG/M3 2.7 U
Page 11 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_08 TO-15 10061-02-6 trans-1,3-Dichloropropene 2.5 U 0.54 2.5 UG/M3 2.5 U
BA_SG_08 TO-15 79-01-6 Trichloroethene 0.69 J 0.35 2.6 UG/M3 0.69 J
BA_SG_08 TO-15 75-69-4 Trichlorofluoromethane 1.7 J 0.40 2.6 UG/M3 1.7 J
BA_SG_08 TO-15 108-05-4 Vinyl Acetate 25 U 5.9 25 UG/M3 25 U
BA_SG_08 TO-15 75-01-4 Vinyl Chloride 1.2 J 0.28 2.5 UG/M3 1.2 J
BA_SG_09 TO-15 71-55-6 1,1,1-Trichloroethane 2.8 U 0.35 2.8 UG/M3 2.8 U
BA_SG_09 TO-15 79-34-5 1,1,2,2-Tetrachloroethane 2.8 U 0.40 2.8 UG/M3 2.8 U
BA_SG_09 TO-15 79-00-5 1,1,2-Trichloroethane 2.8 U 0.29 2.8 UG/M3 2.8 U
BA_SG_09 TO-15 76-13-1 1,1,2-Trichlorotrifluoroethane 2.9 U 0.41 2.9 UG/M3 2.9 U
BA_SG_09 TO-15 75-34-3 1,1-Dichloroethane 2.9 U 0.42 2.9 UG/M3 2.9 U
BA_SG_09 TO-15 75-35-4 1,1-Dichloroethene 2.9 U 0.40 2.9 UG/M3 2.9 U
BA_SG_09 TO-15 120-82-1 1,2,4-Trichlorobenzene 5.9 U 0.70 5.9 UG/M3 5.9 UJ
BA_SG_09 TO-15 95-63-6 1,2,4-Trimethylbenzene 11 0.40 2.8 UG/M3 11
BA_SG_09 TO-15 106-93-4 1,2-Dibromoethane 2.8 U 0.33 2.8 UG/M3 2.8 U
BA_SG_09 TO-15 76-14-2 1,2-Dichloro-1,1,2,2-tetrafluoroethane (CFC 114)2.8 U 0.45 2.8 UG/M3 2.8 UJ
BA_SG_09 TO-15 95-50-1 1,2-Dichlorobenzene 2.9 U 0.42 2.9 UG/M3 2.9 UJ
BA_SG_09 TO-15 107-06-2 1,2-Dichloroethane 2.9 U 0.32 2.9 UG/M3 2.9 U
BA_SG_09 TO-15 78-87-5 1,2-Dichloropropane 2.8 U 0.35 2.8 UG/M3 2.8 U
BA_SG_09 TO-15 108-67-8 1,3,5-Trimethylbenzene 2.6 J 0.41 2.8 UG/M3 2.6 J
BA_SG_09 TO-15 106-99-0 1,3-Butadiene 20 0.47 2.8 UG/M3 20
BA_SG_09 TO-15 541-73-1 1,3-Dichlorobenzene 2.8 U 0.43 2.8 UG/M3 2.8 UJ
BA_SG_09 TO-15 106-46-7 1,4-Dichlorobenzene 2.8 U 0.44 2.8 UG/M3 2.8 UJ
BA_SG_09 TO-15 123-91-1 1,4-Dioxane 2.8 U 0.34 2.8 UG/M3 2.8 U
BA_SG_09 TO-15 78-93-3 2-Butanone (MEK)33 0.59 5.6 UG/M3 33
BA_SG_09 TO-15 591-78-6 2-Hexanone 9.2 0.35 5.9 UG/M3 9.2
BA_SG_09 TO-15 67-63-0 2-Propanol (Isopropyl Alcohol)24 1.2 5.5 UG/M3 24
BA_SG_09 TO-15 622-96-8 4-Ethyltoluene 3.4 0.45 2.9 UG/M3 3.4
BA_SG_09 TO-15 108-10-1 4-Methyl-2-pentanone 25 0.39 5.9 UG/M3 25
BA_SG_09 TO-15 67-64-1 Acetone 190 6.4 28 UG/M3 190
BA_SG_09 TO-15 71-43-2 Benzene 34 0.41 2.9 UG/M3 34
BA_SG_09 TO-15 100-44-7 Benzyl Chloride 11 U 0.64 11 UG/M3 11 U
BA_SG_09 TO-15 75-27-4 Bromodichloromethane 0.93 J 0.41 2.9 UG/M3 0.93 J
BA_SG_09 TO-15 75-25-2 Bromoform 2.9 U 0.59 2.9 UG/M3 2.9 U
BA_SG_09 TO-15 74-83-9 Bromomethane 0.63 J 0.40 2.7 UG/M3 0.63 J
BA_SG_09 TO-15 75-15-0 Carbon Disulfide 29 0.86 5.7 UG/M3 29
BA_SG_09 TO-15 56-23-5 Carbon Tetrachloride 2.8 U 0.40 2.8 UG/M3 2.8 U
BA_SG_09 TO-15 108-90-7 Chlorobenzene 2.8 U 0.38 2.8 UG/M3 2.8 UJ
BA_SG_09 TO-15 75-00-3 Chloroethane 1.3 J 0.35 2.8 UG/M3 1.3 J
BA_SG_09 TO-15 67-66-3 Chloroform 0.54 J 0.38 2.8 UG/M3 0.54 J
Page 12 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_09 TO-15 74-87-3 Chloromethane 5.9 0.46 2.8 UG/M3 5.9
BA_SG_09 TO-15 156-59-2 cis-1,2-Dichloroethene 2.8 U 0.40 2.8 UG/M3 2.8 U
BA_SG_09 TO-15 10061-01-5 cis-1,3-Dichloropropene 2.9 U 0.44 2.9 UG/M3 2.9 U
BA_SG_09 TO-15 98-82-8 Cumene 0.73 J 0.41 2.9 UG/M3 0.73 J
BA_SG_09 TO-15 110-82-7 Cyclohexane 3.4 J 0.80 5.6 UG/M3 3.4 J
BA_SG_09 TO-15 124-48-1 Dibromochloromethane 2.9 U 0.37 2.9 UG/M3 2.9 U
BA_SG_09 TO-15 75-71-8 Dichlorodifluoromethane (CFC 12)3.7 0.47 2.8 UG/M3 3.7
BA_SG_09 TO-15 75-09-2 Dichloromethane (Methylene Chloride)2.8 U 0.80 2.8 UG/M3 2.8 U
BA_SG_09 TO-15 141-78-6 Ethyl Acetate 8.8 J 1.5 11 UG/M3 8.8 J
BA_SG_09 TO-15 100-41-4 Ethylbenzene 6.7 0.40 2.8 UG/M3 6.7
BA_SG_09 TO-15 87-68-3 Hexachlorobutadiene 2.8 U 0.59 2.8 UG/M3 2.8 UJ
BA_SG_09 TO-15 110-54-3 Hexane 17 0.59 2.8 UG/M3 17
BA_SG_09 TO-15 179601-23-1 m,p-Xylenes 17 0.75 5.9 UG/M3 17
BA_SG_09 TO-15 1634-04-4 Methyl tert-Butyl Ether 2.9 U 0.34 2.9 UG/M3 2.9 U
BA_SG_09 TO-15 91-20-3 Naphthalene 1.6 J 0.70 2.9 UG/M3 1.6 J-
BA_SG_09 TO-15 142-82-5 n-Heptane 12 0.45 2.8 UG/M3 12
BA_SG_09 TO-15 95-47-6 o-Xylene 6.3 0.41 2.8 UG/M3 6.3
BA_SG_09 TO-15 115-07-1 Propene 160 0.70 2.8 UG/M3 160
BA_SG_09 TO-15 100-42-5 Styrene 7.6 0.46 2.8 UG/M3 7.6
BA_SG_09 TO-15 127-18-4 Tetrachloroethene 100 0.37 2.8 UG/M3 100
BA_SG_09 TO-15 109-99-9 Tetrahydrofuran (THF)2.4 J 0.36 5.4 UG/M3 2.4 J
BA_SG_09 TO-15 108-88-3 Toluene 28 0.35 2.8 UG/M3 28
BA_SG_09 TO-15 156-60-5 trans-1,2-Dichloroethene 2.9 U 0.40 2.9 UG/M3 2.9 U
BA_SG_09 TO-15 10061-02-6 trans-1,3-Dichloropropene 2.7 U 0.59 2.7 UG/M3 2.7 U
BA_SG_09 TO-15 79-01-6 Trichloroethene 2.8 U 0.39 2.8 UG/M3 2.8 U
BA_SG_09 TO-15 75-69-4 Trichlorofluoromethane 2.7 J 0.43 2.8 UG/M3 2.7 J
BA_SG_09 TO-15 108-05-4 Vinyl Acetate 27 U 6.4 27 UG/M3 27 U
BA_SG_09 TO-15 75-01-4 Vinyl Chloride 1.3 J 0.30 2.7 UG/M3 1.3 J
BA_SG_BACKGROUND TO-15 71-55-6 1,1,1-Trichloroethane 2.8 U 0.35 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 79-34-5 1,1,2,2-Tetrachloroethane 2.8 U 0.39 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 79-00-5 1,1,2-Trichloroethane 2.8 U 0.28 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 76-13-1 1,1,2-Trichlorotrifluoroethane 0.52 J 0.40 2.8 UG/M3 0.52 J
BA_SG_BACKGROUND TO-15 75-34-3 1,1-Dichloroethane 2.8 U 0.41 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 75-35-4 1,1-Dichloroethene 2.8 U 0.39 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 120-82-1 1,2,4-Trichlorobenzene 5.8 U 0.69 5.8 UG/M3 5.8 U
BA_SG_BACKGROUND TO-15 95-63-6 1,2,4-Trimethylbenzene 17 0.39 2.8 UG/M3 17
BA_SG_BACKGROUND TO-15 106-93-4 1,2-Dibromoethane 2.7 U 0.33 2.7 UG/M3 2.7 U
BA_SG_BACKGROUND TO-15 76-14-2 1,2-Dichloro-1,1,2,2-tetrafluoroethane (CFC 114)2.7 U 0.44 2.7 UG/M3 2.7 U
BA_SG_BACKGROUND TO-15 95-50-1 1,2-Dichlorobenzene 2.8 U 0.42 2.8 UG/M3 2.8 U
Page 13 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_BACKGROUND TO-15 107-06-2 1,2-Dichloroethane 2.8 U 0.31 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 78-87-5 1,2-Dichloropropane 2.8 U 0.35 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 108-67-8 1,3,5-Trimethylbenzene 5.4 0.41 2.8 UG/M3 5.4
BA_SG_BACKGROUND TO-15 106-99-0 1,3-Butadiene 47 0.46 2.8 UG/M3 47
BA_SG_BACKGROUND TO-15 541-73-1 1,3-Dichlorobenzene 2.8 U 0.42 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 106-46-7 1,4-Dichlorobenzene 2.8 U 0.43 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 123-91-1 1,4-Dioxane 2.8 U 0.33 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 78-93-3 2-Butanone (MEK)40 0.58 5.5 UG/M3 40
BA_SG_BACKGROUND TO-15 591-78-6 2-Hexanone 7.0 0.35 5.8 UG/M3 7.0
BA_SG_BACKGROUND TO-15 67-63-0 2-Propanol (Isopropyl Alcohol)28 1.2 5.4 UG/M3 28
BA_SG_BACKGROUND TO-15 622-96-8 4-Ethyltoluene 4.9 0.45 2.9 UG/M3 4.9
BA_SG_BACKGROUND TO-15 108-10-1 4-Methyl-2-pentanone 11 0.39 5.8 UG/M3 11
BA_SG_BACKGROUND TO-15 67-64-1 Acetone 280 6.3 28 UG/M3 280
BA_SG_BACKGROUND TO-15 71-43-2 Benzene 27 0.41 2.8 UG/M3 27
BA_SG_BACKGROUND TO-15 100-44-7 Benzyl Chloride 11 U 0.63 11 UG/M3 11 UJ
BA_SG_BACKGROUND TO-15 75-27-4 Bromodichloromethane 2.8 U 0.41 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 75-25-2 Bromoform 2.8 U 0.58 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 74-83-9 Bromomethane 1.9 J 0.39 2.7 UG/M3 1.9 J
BA_SG_BACKGROUND TO-15 75-15-0 Carbon Disulfide 21 0.84 5.6 UG/M3 21
BA_SG_BACKGROUND TO-15 56-23-5 Carbon Tetrachloride 2.7 U 0.39 2.7 UG/M3 2.7 U
BA_SG_BACKGROUND TO-15 108-90-7 Chlorobenzene 1.4 J 0.37 2.8 UG/M3 1.4 J
BA_SG_BACKGROUND TO-15 75-00-3 Chloroethane 0.74 J 0.35 2.7 UG/M3 0.74 J
BA_SG_BACKGROUND TO-15 67-66-3 Chloroform 8.9 0.37 2.8 UG/M3 8.9
BA_SG_BACKGROUND TO-15 74-87-3 Chloromethane 3.5 0.45 2.7 UG/M3 3.5
BA_SG_BACKGROUND TO-15 156-59-2 cis-1,2-Dichloroethene 2.8 U 0.40 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 10061-01-5 cis-1,3-Dichloropropene 2.8 U 0.44 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 98-82-8 Cumene 2.4 J 0.41 2.8 UG/M3 2.4 J
BA_SG_BACKGROUND TO-15 110-82-7 Cyclohexane 9.4 0.79 5.5 UG/M3 9.4
BA_SG_BACKGROUND TO-15 124-48-1 Dibromochloromethane 2.8 U 0.37 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 75-71-8 Dichlorodifluoromethane (CFC 12)1.8 J 0.46 2.8 UG/M3 1.8 J
BA_SG_BACKGROUND TO-15 75-09-2 Dichloromethane (Methylene Chloride)2.8 U 0.79 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 141-78-6 Ethyl Acetate 8.6 J 1.5 11 UG/M3 8.6 J
BA_SG_BACKGROUND TO-15 100-41-4 Ethylbenzene 17 0.40 2.8 UG/M3 17
BA_SG_BACKGROUND TO-15 87-68-3 Hexachlorobutadiene 2.8 U 0.58 2.8 UG/M3 2.8 UJ
BA_SG_BACKGROUND TO-15 110-54-3 Hexane 32 0.58 2.8 UG/M3 32
BA_SG_BACKGROUND TO-15 179601-23-1 m,p-Xylenes 59 0.74 5.8 UG/M3 59
BA_SG_BACKGROUND TO-15 1634-04-4 Methyl tert-Butyl Ether 2.8 U 0.33 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 91-20-3 Naphthalene 0.99 J 0.69 2.9 UG/M3 0.99 J
BA_SG_BACKGROUND TO-15 142-82-5 n-Heptane 19 0.45 2.8 UG/M3 19
Page 14 of 15
BRADSHAW AUTO AIR ANALYTICAL RESULTS SUMMARY
ALS ENVIRONMENTAL REPORT NO. P230358
Sample ID Method CAS No.Analyte Lab_Result Lab_Qual MDL RL Units VAL_Result VAL_Qual
BA_SG_BACKGROUND TO-15 95-47-6 o-Xylene 21 0.41 2.8 UG/M3 21
BA_SG_BACKGROUND TO-15 115-07-1 Propene 410 0.69 2.8 UG/M3 410
BA_SG_BACKGROUND TO-15 100-42-5 Styrene 8.6 0.45 2.8 UG/M3 8.6
BA_SG_BACKGROUND TO-15 127-18-4 Tetrachloroethene 3.7 0.36 2.8 UG/M3 3.7
BA_SG_BACKGROUND TO-15 109-99-9 Tetrahydrofuran (THF)5.3 0.35 5.3 UG/M3 5.3
BA_SG_BACKGROUND TO-15 108-88-3 Toluene 39 0.34 2.8 UG/M3 39
BA_SG_BACKGROUND TO-15 156-60-5 trans-1,2-Dichloroethene 2.8 U 0.39 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 10061-02-6 trans-1,3-Dichloropropene 2.7 U 0.58 2.7 UG/M3 2.7 U
BA_SG_BACKGROUND TO-15 79-01-6 Trichloroethene 2.8 U 0.38 2.8 UG/M3 2.8 U
BA_SG_BACKGROUND TO-15 75-69-4 Trichlorofluoromethane 0.93 J 0.43 2.7 UG/M3 0.93 J
BA_SG_BACKGROUND TO-15 108-05-4 Vinyl Acetate 26 U 6.3 26 UG/M3 26 U
BA_SG_BACKGROUND TO-15 75-01-4 Vinyl Chloride 0.96 J 0.30 2.7 UG/M3 0.96 J
Page 15 of 15

Tetra Tech, Inc.
1560 Broadway, Suite 1400, Denver, CO 80202
Tel [phone]
www.tetratech.com
September 6, 2023

Mr. Ryan Dunham
On-Scene Coordinator
U.S. Environmental Protection Agency, Region 8
Superfund and Emergency Management Division
1595 Wynkoop Street
Denver, CO 80202
Subject: Data Validation Report
Bradshaw Auto SI Sampling Support
EPA Contract No.: 68HE0820D0001
Task Order/Technical Direction No.: 68HE0820F0083 / 2083-2303-07
Document Tracking No. 1343c

Dear Mr. Dunham:
Tetra Tech, Inc. (Tetra Tech) is submitting this data validation report for 12 water samples (including 1
field duplicate sample and 1 trip blank sample) collected at the Bradshaw Auto SI Site. The samples were
collected on June 28 through June 29, 2023 and were analyzed for trace volatile organic compounds
(VOC) by Chemtech Consulting Group. The final laboratory data package was received on July 20, 2023.

Analytical data were evaluated in general accordance with the Tetra Tech Programmatic Quality
Assurance Project Plan for EPA Region 8 START V Brownfields Task Order, Superfund Technical
Assessment and Response Team (START V), EPA Region 8, Revision 4 (April 2022), and the EPA
National Functional Guidelines (NFG) for Organic Superfund Methods Data Review (November 2020).

No rejection of results was required for this data package. The results may be used as qualified based on
the findings of this validation effort.

If you have any questions regarding this data validation report, please contact me via the project manager.

Sincerely,

Environmental Chemist
Enclosure
cc: Didi Fung, Tetra Tech Program Manager
Matt LaFemina, Tetra Tech Project Manager
Clayton Longest, Tetra Tech Project Document Control Coordinator
TO/TD File
ATTACHMENT
DATA VALIDATION REPORT
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 1 of 8
Site Name Bradshaw Auto SI Sampling Support TO/TD No. 68HE0820F0083 / 2083-2303-07 Document Tracking No.
Data Reviewer
(name and date) Kayla Phye, 08/15/2023 Technical Reviewer
(name and date) Maura McAleese, 08/29/2023
Laboratory Report No. H0FA3 Laboratory Chemtech Consulting Group –
Mountainside, New Jersey
Analyses
Samples and Matrix
Collection Date(s)
Field Duplicate Pairs
Field QC Blanks
INTRODUCTION
This checklist summarizes the Stage 2B validation performed on the subject laboratory report, in accordance with the U.S. Environmental
Protection Agency (EPA) Guidance for Labeling Externally Validated Laboratory Analytical Data for Superfund Use (January 2009). Analytical data
were evaluated in general accordance with the Tetra Tech Programmatic Quality Assurance Project Plan for Emergency Response and Site
Assessment Task Orders, Superfund Technical Assessment and Response Team (START V), EPA Region 8, Revision 4 (March 2023), and the EPA
National Functional Guidelines (NFG) for Organic Superfund Methods Data Review (November 2020).
OVERALL EVALUATION
No rejection of results was required for this data package. The results may be used as qualified based on the findings of this validation effort.
DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 2 of 8

Data completeness:
Within
Criteria Exceedance/Notes
N
Both undiluted and diluted results for samples HFA4, H0FB3, H0FB4, H0FC1, and H0FC3 were reported in the data package. The
electronic data deliverable (EDD) reported one result per analyte for the affected samples. Reporting style was approved
by Region 8 EPA. Reported dilutions and multiple results are further discussed in the “Sample dilutions” and “Re-extraction
and reanalysis” sections below.
The Scribe station location for sample H0FC2 was recorded as “TripBlank” in the chain-of-custody (COC). The station location was
reported as “BA_TB” in the EDD. The station location in the EDD for this sample was manually changed to match the
station location listed on the COC during this validation effort. No qualifications were applied.

Sample preservation, receipt, and holding times:
Within
Criteria Exceedance/Notes
Y

Instrument Performance Checks:
Within
Criteria Exceedance/Notes
Y

Initial Calibration:
Within
Criteria Exceedance/Notes
Y

DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 3 of 8

Continuing Calibration:
Within
Criteria Exceedance/Notes
N
Opening CCV standard VSTD005088 percent difference (21.7%) fell outside CLP acceptance criterion (±20%) for
dibromochloromethane. All other associated samples reported the affected compounds from another analysis; therefore,
no qualifications were required.

Calibration Verification:
Within
Criteria Exceedance/Notes
Y

Method blanks:
Within
Criteria Exceedance/Notes
N
Method blank VBLK013 had a detection of tetrachloroethene between the method detection limit (MDL) and the reporting limit
(RL). The associated result in sample H0FA3 was nondetect; therefore, no qualifications were applied.
Method blank VBLK015 had a detection of methylene chloride above the RL. Associated results in samples H0FB6 and H0FC2 were
nondetect; therefore, no qualifications were applied.
Storage blank VHBLK001 associated with all samples had a detection of methylene chloride above the RL. Results in all associated
samples were nondetect for this analyte; therefore, no qualifications were applied. The storage blank also had a detection
for an unknown tentatively identified compound (TIC). No samples had detections for unknown TICs at a similar retention
time; therefore, no qualifications were applied.

DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 4 of 8

Field blanks:
Within
Criteria Exceedance/Notes
N
The trip blank (H0FC2) had a detection of chloromethane between MDL and the RL.
 Samples H0FA3, H0FB0, H0FB4, H0FB6, and H0FC2 had detections for chloromethane between the MDL and RL and,
therefore, were qualified as nondetect at the RL (flagged U).
 Samples H0FA4, H0FA7, H0FA8, H0FB1, H0FB3, H0FC1, and H0FC3 had detections for chloromethane above the RL;
therefore, these results were qualified as estimated with a possible high bias (flagged J+).
 All other samples were nondetect and therefore, were not qualified.
The trip blank also had a detection for an unknown TIC. The associated samples did not have detections for unknown TICs at similar
retentions times; therefore, no qualifications were applied.

Interference Check Samples (ICS) (ICP metals only):
Within
Criteria Exceedance/Notes
N/A

Surrogates and labeled compounds:
Within
Criteria Exceedance/Notes
N
Toluene-d8 recoveries were below QAPP limits (80-120%) for all samples. Nondetect results for all samples were qualified as
estimated (flagged UJ), and detected results were qualified as estimated with a possible low bias (flagged J-) for
1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, ethylbenzene, isopropylbenzene, m,p-xylene, o-xylene,
tetrachloroethene, trichloroethene, toluene, and styrene.
DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 5 of 8

MS/MSDs:
Within
Criteria Exceedance/Notes
Y
The percent recovery (%R) for the matrix spike (MS) and matrix spike duplicate (MSD) performed on sample H0FA7 was below
QAPP acceptance criteria for carbon disulfide, chloromethane, dichlorodifluoromethane, and methylcyclohexane. The MS
also recovered below QAPP criteria for cyclohexane.
 The average recovery for cyclohexane was within acceptance criteria; therefore, no qualifications were applied.
 Carbon disulfide, chloromethane, dichlorodifluoromethane, and methylcyclohexane were qualified as estimated with
possible low bias (flagged J- for detects and UJ for nondetects).
 The chloromethane result for the parent sample was previously qualified with a potential high bias due to the trip blank
detection; therefore, the final qualifier for this analyte and sample is estimated with no bias (flagged J).

Post digestion spikes:
Within
Criteria Exceedance/Notes
N/A

Serial dilutions:
Within
Criteria Exceedance/Notes
N/A

Laboratory duplicates:
Within
Criteria Exceedance/Notes
N/A

DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 6 of 8

Field duplicates:
Within
Criteria Exceedance/Notes
N
H0FB3 and H0FB4 exceeded QAPP RPD limit (50%) for carbon disulfide at 87% RPD. The QAPP states results are acceptable when
the absolute difference is less than the quantitation limit (identified as the contract required quantitation limit (CRQL) in
the lab report). Therefore, no qualifications were applied.

LCSs/LCSDs:
Within
Criteria Exceedance/Notes
N/A

Sample dilutions:
Within
Criteria Exceedance/Notes
Y
Sample H0FA4 was reported at a 100-fold dilution for tetrachloroethene.
Samples H0FB3 and H0FB4 were reported at a 10-fold dilution for tetrachloroethene.
Sample H0FC1 was reported at a 40-fold dilution for trichloroethene and tetrachloroethene.
Sample H0FC3 was reported at a 4-fold dilution for cis-1,2-dichloroethene and trichloroethene.

Re-extraction and reanalysis:
Within
Criteria Exceedance/Notes
Y Reanalysis was performed on samples H0FA4, H0FB3, H0FB4, H0FC1, H0FC1, H0FC3, and H0FC3 with dilutions due to high
concentrations of target compounds. Dilutions are discussed in the “Sample dilutions” section above.

Second column confirmation (GC and HPLC analyses only):
Within
Criteria Exceedance/Notes
N/A

DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 7 of 8

Internal Standards:
Within
Criteria Exceedance/Notes
Y

Analyte quantitation and MDLs/RLs:
Within
Criteria Exceedance/Notes
Y
Positive results greater than the MDL but less than the RL (identified as CRQL) were qualified as estimated by the laboratory
(flagged J). Results less than the MDL were reported as nondetect (flagged U) at the RL in the laboratory report and the
EDD. MDLs and RLs are provided in the attached analytical data table and EDD.

Tentatively identified compounds:
Within
Criteria Exceedance/Notes
N
The trip blank sample H0FC2 reported a detection for an unknown TIC eluding at 3.19 minutes. The unknown TIC result was
qualified as estimated (flagged J).
Sample H0FC3 contained a total alkanes TIC concentration at 99 minutes retention time. The total alkanes TIC was reported as
estimated (flagged NJ).

Other [none]:
Within
Criteria Exceedance/Notes
N/A

DATA VALIDATION CHECKLIST – STAGE 2B
EPA REGION 8 START CONTRACT
Page 8 of 8

Overall Qualifications:

See results summary pages attached for changes to the laboratory qualifiers based upon this validation. The following is a list of qualifiers and
definitions that may be used for the validation of this data package:

J The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample.
J+ The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased high.
J- The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased low.
NJ The analysis indicates the presence of an analyte that has been “tentatively identified” and the associated value is the approximate
concentration of the analyte in the sample.
R The sample result is rejected as unusable due to serious deficiencies in one or more quality control criteria. The analyte may or may not
be present in the sample.
U The analyte was analyzed for, but was not detected at or above the associated value (reporting limit).
UJ The analyte was analyzed for, but was not detected at or above the associated value (reporting limit), which is considered approximate
due to deficiencies in one or more quality control criteria.

BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FA3 BA_MW13S SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 75-35-4 1,1-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA3 BA_MW13S SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FA3 BA_MW13S SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FA3 BA_MW13S SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FA3 BA_MW13S SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FA3 BA_MW13S SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FA3 BA_MW13S SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 75-15-0 Carbon disulfide 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 67-66-3 Chloroform 0.90 0.40 0.50 ug/L Target 0.90
H0FA3 BA_MW13S SFAM01.1 74-87-3 Chloromethane 0.48 J 0.13 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 156-59-2 cis-1,2-Dichloroethene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA3 BA_MW13S SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FA3 BA_MW13S SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA3 BA_MW13S SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
Page 1 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FA3 BA_MW13S SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FA3 BA_MW13S SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FA3 BA_MW13S SFAM01.1 127-18-4 Tetrachloroethene 14 B 0.13 0.50 ug/L Target 14 J-
H0FA3 BA_MW13S SFAM01.1 108-88-3 Toluene 0.50 U 0.16 0.50 ug/L Target 0.50 UJ
H0FA3 BA_MW13S SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 79-01-6 Trichloroethene 0.50 U 0.28 0.50 ug/L Target 0.50 UJ
H0FA3 BA_MW13S SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA3 BA_MW13S SFAM01.1 75-01-4 Vinyl chloride 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 75-35-4 1,1-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA4 BA_MW14 SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FA4 BA_MW14 SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FA4 BA_MW14 SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FA4 BA_MW14 SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FA4 BA_MW14 SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FA4 BA_MW14 SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 75-15-0 Carbon disulfide 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 67-66-3 Chloroform 0.66 0.40 0.50 ug/L Target 0.66
H0FA4 BA_MW14 SFAM01.1 74-87-3 Chloromethane 0.61 0.13 0.50 ug/L Target 0.61 J+
H0FA4 BA_MW14 SFAM01.1 156-59-2 cis-1,2-Dichloroethene 0.61 0.098 0.50 ug/L Target 0.61
H0FA4 BA_MW14 SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
Page 2 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FA4 BA_MW14 SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA4 BA_MW14 SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FA4 BA_MW14 SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA4 BA_MW14 SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FA4 BA_MW14 SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FA4 BA_MW14 SFAM01.1 127-18-4 Tetrachloroethene 350 D 13 0.50 ug/L Target 350 J-
H0FA4 BA_MW14 SFAM01.1 108-88-3 Toluene 0.50 U 0.16 0.50 ug/L Target 0.50 UJ
H0FA4 BA_MW14 SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 79-01-6 Trichloroethene 6.0 0.28 0.50 ug/L Target 6.0 J-
H0FA4 BA_MW14 SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA4 BA_MW14 SFAM01.1 75-01-4 Vinyl chloride 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 75-35-4 1,1-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FA7 BA_MW4 SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FA7 BA_MW4 SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FA7 BA_MW4 SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FA7 BA_MW4 SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
Page 3 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FA7 BA_MW4 SFAM01.1 75-15-0 Carbon disulfide 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 67-66-3 Chloroform 0.50 U 0.40 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 74-87-3 Chloromethane 0.99 0.13 0.50 ug/L Target 0.99 J
H0FA7 BA_MW4 SFAM01.1 156-59-2 cis-1,2-Dichloroethene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 127-18-4 Tetrachloroethene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 108-88-3 Toluene 0.50 U 0.16 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 79-01-6 Trichloroethene 0.50 U 0.28 0.50 ug/L Target 0.50 UJ
H0FA7 BA_MW4 SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA7 BA_MW4 SFAM01.1 75-01-4 Vinyl chloride 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.11 J 0.094 0.50 ug/L Target 0.11 J
H0FA8 BA_MW5 SFAM01.1 75-34-3 1,1-Dichloroethane 0.11 J 0.093 0.50 ug/L Target 0.11 J
H0FA8 BA_MW5 SFAM01.1 75-35-4 1,1-Dichloroethene 0.17 J 0.11 0.50 ug/L Target 0.17 J
H0FA8 BA_MW5 SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.16 J 0.15 0.50 ug/L Target 0.16 J
H0FA8 BA_MW5 SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA8 BA_MW5 SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 106-93-4 1,2-Dibromoethane 0.11 J 0.099 0.50 ug/L Target 0.11 J
H0FA8 BA_MW5 SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FA8 BA_MW5 SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.12 J 0.098 0.50 ug/L Target 0.12 J
H0FA8 BA_MW5 SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
Page 4 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FA8 BA_MW5 SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FA8 BA_MW5 SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FA8 BA_MW5 SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FA8 BA_MW5 SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FA8 BA_MW5 SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 75-27-4 Bromodichloromethane 0.14 J 0.080 0.50 ug/L Target 0.14 J
H0FA8 BA_MW5 SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 75-15-0 Carbon disulfide 0.13 J 0.12 0.50 ug/L Target 0.13 J
H0FA8 BA_MW5 SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 67-66-3 Chloroform 0.95 0.40 0.50 ug/L Target 0.95
H0FA8 BA_MW5 SFAM01.1 74-87-3 Chloromethane 0.66 0.13 0.50 ug/L Target 0.66 J+
H0FA8 BA_MW5 SFAM01.1 156-59-2 cis-1,2-Dichloroethene 0.12 J 0.098 0.50 ug/L Target 0.12 J
H0FA8 BA_MW5 SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 124-48-1 Dibromochloromethane 0.13 J 0.11 0.50 ug/L Target 0.13 J
H0FA8 BA_MW5 SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA8 BA_MW5 SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FA8 BA_MW5 SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FA8 BA_MW5 SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FA8 BA_MW5 SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FA8 BA_MW5 SFAM01.1 127-18-4 Tetrachloroethene 0.21 J 0.13 0.50 ug/L Target 0.21 J-
H0FA8 BA_MW5 SFAM01.1 108-88-3 Toluene 0.50 U 0.16 0.50 ug/L Target 0.50 UJ
H0FA8 BA_MW5 SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.13 J 0.11 0.50 ug/L Target 0.13 J
H0FA8 BA_MW5 SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 79-01-6 Trichloroethene 0.50 U 0.28 0.50 ug/L Target 0.50 UJ
H0FA8 BA_MW5 SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FA8 BA_MW5 SFAM01.1 75-01-4 Vinyl chloride 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 75-35-4 1,1-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
Page 5 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FB0 BA_MW7 SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB0 BA_MW7 SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FB0 BA_MW7 SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FB0 BA_MW7 SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FB0 BA_MW7 SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FB0 BA_MW7 SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FB0 BA_MW7 SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 75-15-0 Carbon disulfide 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 67-66-3 Chloroform 0.61 0.40 0.50 ug/L Target 0.61
H0FB0 BA_MW7 SFAM01.1 74-87-3 Chloromethane 0.35 J 0.13 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 156-59-2 cis-1,2-Dichloroethene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB0 BA_MW7 SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FB0 BA_MW7 SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB0 BA_MW7 SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FB0 BA_MW7 SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FB0 BA_MW7 SFAM01.1 127-18-4 Tetrachloroethene 0.15 J 0.13 0.50 ug/L Target 0.15 J-
H0FB0 BA_MW7 SFAM01.1 108-88-3 Toluene 0.50 U 0.16 0.50 ug/L Target 0.50 UJ
H0FB0 BA_MW7 SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 79-01-6 Trichloroethene 0.50 U 0.28 0.50 ug/L Target 0.50 UJ
H0FB0 BA_MW7 SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB0 BA_MW7 SFAM01.1 75-01-4 Vinyl chloride 0.50 U 0.11 0.50 ug/L Target 0.50 U
Page 6 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FB1 BA_MW8 SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 75-35-4 1,1-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB1 BA_MW8 SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FB1 BA_MW8 SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FB1 BA_MW8 SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FB1 BA_MW8 SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FB1 BA_MW8 SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FB1 BA_MW8 SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 75-15-0 Carbon disulfide 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 67-66-3 Chloroform 0.46 J 0.40 0.50 ug/L Target 0.46 J
H0FB1 BA_MW8 SFAM01.1 74-87-3 Chloromethane 0.58 0.13 0.50 ug/L Target 0.58 J+
H0FB1 BA_MW8 SFAM01.1 156-59-2 cis-1,2-Dichloroethene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB1 BA_MW8 SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FB1 BA_MW8 SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB1 BA_MW8 SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
Page 7 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FB1 BA_MW8 SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FB1 BA_MW8 SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FB1 BA_MW8 SFAM01.1 127-18-4 Tetrachloroethene 0.29 J 0.13 0.50 ug/L Target 0.29 J-
H0FB1 BA_MW8 SFAM01.1 108-88-3 Toluene 0.50 U 0.16 0.50 ug/L Target 0.50 UJ
H0FB1 BA_MW8 SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 79-01-6 Trichloroethene 0.50 U 0.28 0.50 ug/L Target 0.50 UJ
H0FB1 BA_MW8 SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB1 BA_MW8 SFAM01.1 75-01-4 Vinyl chloride 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 75-35-4 1,1-Dichloroethene 0.16 J 0.11 0.50 ug/L Target 0.16 J
H0FB3 BA_TW_02 SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB3 BA_TW_02 SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FB3 BA_TW_02 SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FB3 BA_TW_02 SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FB3 BA_TW_02 SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FB3 BA_TW_02 SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FB3 BA_TW_02 SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 75-15-0 Carbon disulfide 0.71 0.12 0.50 ug/L Target 0.71
H0FB3 BA_TW_02 SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 67-66-3 Chloroform 0.50 U 0.40 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 74-87-3 Chloromethane 0.58 0.13 0.50 ug/L Target 0.58 J+
H0FB3 BA_TW_02 SFAM01.1 156-59-2 cis-1,2-Dichloroethene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
Page 8 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FB3 BA_TW_02 SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB3 BA_TW_02 SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FB3 BA_TW_02 SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB3 BA_TW_02 SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FB3 BA_TW_02 SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FB3 BA_TW_02 SFAM01.1 127-18-4 Tetrachloroethene 78 D 1.3 0.50 ug/L Target 78 J-
H0FB3 BA_TW_02 SFAM01.1 108-88-3 Toluene 0.50 U 0.16 0.50 ug/L Target 0.50 UJ
H0FB3 BA_TW_02 SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 79-01-6 Trichloroethene 5.5 0.28 0.50 ug/L Target 5.5 J-
H0FB3 BA_TW_02 SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB3 BA_TW_02 SFAM01.1 75-01-4 Vinyl chloride 0.39 J 0.11 0.50 ug/L Target 0.39 J
H0FB4 BA_TW_02DUP SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 75-35-4 1,1-Dichloroethene 0.18 J 0.11 0.50 ug/L Target 0.18 J
H0FB4 BA_TW_02DUP SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB4 BA_TW_02DUP SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FB4 BA_TW_02DUP SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FB4 BA_TW_02DUP SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FB4 BA_TW_02DUP SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FB4 BA_TW_02DUP SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FB4 BA_TW_02DUP SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
Page 9 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FB4 BA_TW_02DUP SFAM01.1 75-15-0 Carbon disulfide 0.28 J 0.12 0.50 ug/L Target 0.28 J
H0FB4 BA_TW_02DUP SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 67-66-3 Chloroform 0.50 U 0.40 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 74-87-3 Chloromethane 0.47 J 0.13 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 156-59-2 cis-1,2-Dichloroethene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB4 BA_TW_02DUP SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FB4 BA_TW_02DUP SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB4 BA_TW_02DUP SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FB4 BA_TW_02DUP SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FB4 BA_TW_02DUP SFAM01.1 127-18-4 Tetrachloroethene 70 D 1.3 0.50 ug/L Target 70 J-
H0FB4 BA_TW_02DUP SFAM01.1 108-88-3 Toluene 0.50 U 0.16 0.50 ug/L Target 0.50 UJ
H0FB4 BA_TW_02DUP SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 79-01-6 Trichloroethene 5.1 0.28 0.50 ug/L Target 5.1 J-
H0FB4 BA_TW_02DUP SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB4 BA_TW_02DUP SFAM01.1 75-01-4 Vinyl chloride 0.46 J 0.11 0.50 ug/L Target 0.46 J
H0FB6 BA_TW_04 SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 75-35-4 1,1-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB6 BA_TW_04 SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FB6 BA_TW_04 SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
Page 10 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FB6 BA_TW_04 SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FB6 BA_TW_04 SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FB6 BA_TW_04 SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FB6 BA_TW_04 SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FB6 BA_TW_04 SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 75-15-0 Carbon disulfide 0.27 J 0.12 0.50 ug/L Target 0.27 J
H0FB6 BA_TW_04 SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 67-66-3 Chloroform 0.50 U 0.40 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 74-87-3 Chloromethane 0.31 J 0.13 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 156-59-2 cis-1,2-Dichloroethene 1.6 0.098 0.50 ug/L Target 1.6
H0FB6 BA_TW_04 SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FB6 BA_TW_04 SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FB6 BA_TW_04 SFAM01.1 179601-23-1 m,p-Xylene 0.16 J 0.13 0.50 ug/L Target 0.16 J-
H0FB6 BA_TW_04 SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FB6 BA_TW_04 SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FB6 BA_TW_04 SFAM01.1 127-18-4 Tetrachloroethene 4.3 0.13 0.50 ug/L Target 4.3 J-
H0FB6 BA_TW_04 SFAM01.1 108-88-3 Toluene 0.23 J 0.16 0.50 ug/L Target 0.23 J-
H0FB6 BA_TW_04 SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 79-01-6 Trichloroethene 3.1 0.28 0.50 ug/L Target 3.1 J-
H0FB6 BA_TW_04 SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FB6 BA_TW_04 SFAM01.1 75-01-4 Vinyl chloride 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 75-35-4 1,1-Dichloroethene 0.13 J 0.11 0.50 ug/L Target 0.13 J
H0FC1 BA_MW13D SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
Page 11 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FC1 BA_MW13D SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FC1 BA_MW13D SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FC1 BA_MW13D SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FC1 BA_MW13D SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FC1 BA_MW13D SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FC1 BA_MW13D SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FC1 BA_MW13D SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 75-15-0 Carbon disulfide 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 67-66-3 Chloroform 0.50 U 0.40 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 74-87-3 Chloromethane 0.76 0.13 0.50 ug/L Target 0.76 J+
H0FC1 BA_MW13D SFAM01.1 156-59-2 cis-1,2-Dichloroethene 7.0 0.098 0.50 ug/L Target 7.0
H0FC1 BA_MW13D SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FC1 BA_MW13D SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FC1 BA_MW13D SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FC1 BA_MW13D SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FC1 BA_MW13D SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FC1 BA_MW13D SFAM01.1 127-18-4 Tetrachloroethene 270 D 5.2 0.50 ug/L Target 270 J-
H0FC1 BA_MW13D SFAM01.1 108-88-3 Toluene 0.50 U 0.16 0.50 ug/L Target 0.50 UJ
H0FC1 BA_MW13D SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.13 J 0.11 0.50 ug/L Target 0.13 J
H0FC1 BA_MW13D SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 79-01-6 Trichloroethene 74 D 11 0.50 ug/L Target 74 J-
H0FC1 BA_MW13D SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC1 BA_MW13D SFAM01.1 75-01-4 Vinyl chloride 0.50 U 0.11 0.50 ug/L Target 0.50 U
Page 12 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FC2 BA_TB SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 75-35-4 1,1-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FC2 BA_TB SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FC2 BA_TB SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FC2 BA_TB SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FC2 BA_TB SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FC2 BA_TB SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FC2 BA_TB SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 75-15-0 Carbon disulfide 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 67-66-3 Chloroform 0.50 U 0.40 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 74-87-3 Chloromethane 0.22 J 0.13 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 156-59-2 cis-1,2-Dichloroethene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FC2 BA_TB SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FC2 BA_TB SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FC2 BA_TB SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
Page 13 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FC2 BA_TB SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FC2 BA_TB SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FC2 BA_TB SFAM01.1 127-18-4 Tetrachloroethene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FC2 BA_TB SFAM01.1 108-88-3 Toluene 0.50 U 0.16 0.50 ug/L Target 0.50 UJ
H0FC2 BA_TB SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 79-01-6 Trichloroethene 0.50 U 0.28 0.50 ug/L Target 0.50 UJ
H0FC2 BA_TB SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC2 BA_TB SFAM01.1 unknown-01 unknown-01 0.63 J ug/L TIC 0.63 J
H0FC2 BA_TB SFAM01.1 75-01-4 Vinyl chloride 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 71-55-6 1,1,1-Trichloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 79-00-5 1,1,2-Trichloroethane 0.50 U 0.094 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 75-34-3 1,1-Dichloroethane 0.50 U 0.093 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 75-35-4 1,1-Dichloroethene 0.13 J 0.11 0.50 ug/L Target 0.13 J
H0FC3 BA_TW_06 SFAM01.1 87-61-6 1,2,3-Trichlorobenzene 0.50 U 0.35 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 96-18-4 1,2,3-Trichloropropane 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 120-82-1 1,2,4-trichlorobenzene 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 95-63-6 1,2,4-Trimethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FC3 BA_TW_06 SFAM01.1 96-12-8 1,2-Dibromo-3-chloropropane 0.50 U 0.21 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 106-93-4 1,2-Dibromoethane 0.50 U 0.099 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 95-50-1 1,2-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 107-06-2 1,2-Dichloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 78-87-5 1,2-Dichloropropane 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 108-67-8 1,3,5-Trimethylbenzene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FC3 BA_TW_06 SFAM01.1 541-73-1 1,3-Dichlorobenzene 0.50 U 0.098 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 106-46-7 1,4-Dichlorobenzene 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 78-93-3 2-Butanone 5.0 U 1.5 5.0 ug/L Target 5.0 U
H0FC3 BA_TW_06 SFAM01.1 591-78-6 2-Hexanone 5.0 U 0.59 5.0 ug/L Target 5.0 U
H0FC3 BA_TW_06 SFAM01.1 108-10-1 4-Methyl-2-pentanone 5.0 U 1.4 5.0 ug/L Target 5.0 U
H0FC3 BA_TW_06 SFAM01.1 67-64-1 Acetone 5.0 U 4.9 5.0 ug/L Target 5.0 U
H0FC3 BA_TW_06 SFAM01.1 71-43-2 Benzene 0.50 U 0.12 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 74-97-5 Bromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 75-27-4 Bromodichloromethane 0.50 U 0.080 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 75-25-2 Bromoform 0.50 U 0.18 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 74-83-9 Bromomethane 0.50 U 0.16 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 75-15-0 Carbon disulfide 0.42 J 0.12 0.50 ug/L Target 0.42 J
H0FC3 BA_TW_06 SFAM01.1 56-23-5 Carbon tetrachloride 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 108-90-7 Chlorobenzene 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 75-00-3 Chloroethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 67-66-3 Chloroform 0.42 J 0.40 0.50 ug/L Target 0.42 J
H0FC3 BA_TW_06 SFAM01.1 74-87-3 Chloromethane 0.51 0.13 0.50 ug/L Target 0.51 J+
H0FC3 BA_TW_06 SFAM01.1 156-59-2 cis-1,2-Dichloroethene 23 D 0.39 0.50 ug/L Target 23
H0FC3 BA_TW_06 SFAM01.1 10061-01-5 cis-1,3-Dichloropropene 0.50 U 0.11 0.50 ug/L Target 0.50 U
Page 14 of 15
BRADSHAW AUTO SI SAMPLING SUPPORT WATER ANALYTICAL RESULTS SUMMARY
CHEMTECH CONSULTING GROUP REPORT NO. H0FA3
CLP Sample ID Scribe Sample ID Method CAS No. Analyte Lab Result Lab Qual MDL RL Units Analyte Type VAL_Result VAL_Qual
H0FC3 BA_TW_06 SFAM01.1 110-82-7 Cyclohexane 0.50 U 0.19 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 124-48-1 Dibromochloromethane 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 75-71-8 Dichlorodifluoromethane 0.50 U 0.096 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 100-41-4 Ethylbenzene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FC3 BA_TW_06 SFAM01.1 98-82-8 Isopropylbenzene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FC3 BA_TW_06 SFAM01.1 179601-23-1 m,p-Xylene 0.50 U 0.13 0.50 ug/L Target 0.50 UJ
H0FC3 BA_TW_06 SFAM01.1 79-20-9 Methyl Acetate 0.50 U 0.15 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 1634-04-4 Methyl tert-butyl Ether 0.50 U 0.11 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 108-87-2 Methylcyclohexane 0.50 U 0.24 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 75-09-2 Methylene chloride 0.50 U 0.29 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 95-47-6 o-Xylene 0.50 U 0.12 0.50 ug/L Target 0.50 UJ
H0FC3 BA_TW_06 SFAM01.1 100-42-5 Styrene 0.50 U 0.14 0.50 ug/L Target 0.50 UJ
H0FC3 BA_TW_06 SFAM01.1 127-18-4 Tetrachloroethene 5.7 0.13 0.50 ug/L Target 5.7 J-
H0FC3 BA_TW_06 SFAM01.1 108-88-3 Toluene 0.17 J 0.16 0.50 ug/L Target 0.17 J-
H0FC3 BA_TW_06 SFAM01.1 E966796 Total Alkanes 0.91 0.91 NJ
H0FC3 BA_TW_06 SFAM01.1 156-60-5 trans-1,2-Dichloroethene 0.80 0.11 0.50 ug/L Target 0.80
H0FC3 BA_TW_06 SFAM01.1 10061-02-6 trans-1,3-Dichloropropene 0.50 U 0.14 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 79-01-6 Trichloroethene 24 D 1.1 0.50 ug/L Target 24 J-
H0FC3 BA_TW_06 SFAM01.1 75-69-4 Trichlorofluoromethane 0.50 U 0.13 0.50 ug/L Target 0.50 U
H0FC3 BA_TW_06 SFAM01.1 75-01-4 Vinyl chloride 0.14 J 0.11 0.50 ug/L Target 0.14 J
Page 15 of 15
ENCLOSURE 5: LABORATORY ANALYTICAL PACKAGE
To be submitted separately due to large file size.