DSHW-2023-004021 - 0901a068811de4f6

Deq submit <[e-mail]>
Site Characterization Report for SLC Station Center (DWMRC Facility ID No. UTCA-
0023)
1 message
Dean, Daniel <[e-mail]>Thu, Apr 20, 2023 at 9:14 AM
To: "[e-mail]" <[e-mail]>
Cc: "Brad M. Lauchnor" <[e-mail]>, Paige Walton <[e-mail]>, Michael Brehm
<[e-mail]>, Joel Sim <[e-mail]>, brees <[e-mail]>, "Gessert, Erik"
<[e-mail]>, "Austin, Amy B" <[e-mail]>
Brad,
The University of Utah and Terracon have prepared the attached Site Characterization Report for
the SLC Station Center site (DWMRC Facility ID No. UTCA-0023, formerly WRR Industries Inc.).
As noted in the report and our previous phone conversations, this investigation identified VOC
impacts in soil gas and groundwater that were not evaluated by the previous investigations and
require further characterization. We are currently preparing a new work plan that will detail the
additional sampling required to fully characterize the site. Let me know if you have any question or
comments regarding the findings presented in the Site Characterization Report.
Thanks,
Daniel Dean, PG
Investigation and Remediation Group Manager I Environmental Services
6949 S High Tech Dr #100 I Midvale, UT 84047
D 385.337.5971 I M
[e-mail] I Terracon.com
Terracon provides environmental, facilities, geotechnical, and materials consulting engineering services delivered with
responsiveness, resourcefulness, and reliability.
State of Utah Mail - Site Characterization Report for SLC Station Center (DWMRC Facility ID No. UTCA-0023)
DSHW-2023-004021
Private and confidential as detailed here (www.terracon.com/disclaimer). If you cannot access the hyperlink, please e-mail
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61217142 SLC Station Center Site Characterization Report FINAL Signed.pdf
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State of Utah Mail - Site Characterization Report for SLC Station Center (DWMRC Facility ID No. UTCA-0023)
Facilities |Environmental |Geotechnical | Materials 1
Site Characterization
Report
SLC Station Center
550 and 570 West 400 South
Salt Lake City, Salt Lake County, Utah
April 18, 2023 | Terracon Project No. 61217142
Prepared for:
University of Utah and
University of Utah Research Foundation
Salt Lake City, UT
6949 South High Tech Drive
Midvale, Utah 84057
P [phone]
Terracon.com
Facilities |Environmental |Geotechnical | Materials i
April 18, 2023
Utah Department of Environmental Quality
Division of Waste Management and Radiation Control
P.O. Box 144880
Salt Lake City, UT 84114-4880
Attn: Doug Hansen
Division Director
E:[e-mail]
P: [phone]
Re:Site Characterization Report
SLC Station Center
550 & 570 West 400 South
Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142
Dear Mr. Hansen:
On behalf of the University of Utah Research Foundation, Terracon is pleased to provide this
Site Characterization Report (SCR) for the above-referenced site. The SCR provides a
summary of the previous investigations and remedial actions at the site (performed by
others), details the results of the current investigatory activities that were performed by
Terracon, and provides an updated Conceptual Site Model (CSM) detailing the current
understanding of the spatial and phase distribution of the contamination at the site.
If needed, please contact our office at [phone] regarding this submittal.
Sincerely,
Terracon Consultants, Inc.
Daniel Dean Erik Gessert
Group Manager Authorized Project Reviewer
Cc: Brad Lauchnor, Paige Walton, Michael Brehm, Joel Sim, Bill Rees
Site Characterization Report
SLC Station Center | Salt Lake City, Utah
April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental |Geotechnical | Materials ii
TABLE OF CONTENTS
1.0 INTRODUCTION ........................................................................... 1
1.1 Site Description ....................................................................................... 1
1.2 Site History and Summary of Previous Assessment and Corrective Action ........ 2
2.0 SITE CHARACTERIZATION SCOPE AND METHODS ............................ 4
2.1 Standard of Care ...................................................................................... 4
2.2 Sampling Scope ....................................................................................... 4
2.3 Sampling Methods .................................................................................... 6
3.0 SITE CHARACTERIZATION RESULTS ............................................... 9
3.1 Groundwater Data Summary ................................................................... 10
3.2 Soil Gas Data Summary .......................................................................... 11
3.3 HRSC Survey Data Summary ................................................................... 12
4.0 DATA QUALITY ASSESSMENT....................................................... 12
4.1 Precision ............................................................................................... 13
4.2 Bias and Accuracy .................................................................................. 14
4.3 Representativeness ................................................................................ 15
4.4 Comparability ........................................................................................ 16
4.5 Completeness ........................................................................................ 17
4.6 Sensitivity ............................................................................................. 17
5.0 UPDATED CONCEPTUAL SITE MODEL ............................................ 18
5.1 Geologic and Hydrogeologic Information and Setting .................................. 18
5.2 Chlorinated Solvent Properties and Phased Spatial Distribution .................... 19
5.3 Environmental Concerns Verification ......................................................... 22
6.0 CONCLUSION ............................................................................ 23
7.0 REFERENCES ............................................................................. 24
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April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials iii
APPENDICES
Appendix A Exhibits
Exhibit 1 Topographic Site Map
Exhibit 2 Groundwater and Soil Vapor Sampling Locations
Exhibit 3 Corrective Action Activities Performed by Others
Exhibit 4 Groundwater Surface Elevation Map
Exhibit 5 PCE in Groundwater
Exhibit 6 TCE in Groundwater
Exhibit 7 Cis-1,2-Dichloroethene in Groundwater
Exhibit 8 PCE in Soil Gas
Exhibit 9 TCE in Soil Gas
Exhibit 10 HRSC Survey: Lateral Extent of XSD Signal Response
Exhibit 11 HRSC Survey: XSD Cross Sections
Exhibit 12 HRSC Survey: HPT Cross Section
Appendix B Tables
Table C1 VOCs in Groundwater
Table C2 VOCs in Soil Gas
Table C3 MW-1 Historical Groundwater Data
Table C4 MW-2 Historical Groundwater Data
Table C5 MW-3 Historical Groundwater Data
Table C6 MW-4 Historical Groundwater Data
Table C7 MW-5 Historical Groundwater Data
Table C8.1 Duplicate Pair–VOCs in Groundwater
Appendix C Eagle Synergistic HRSC Survey Report
Appendix D Laboratory Reports
Site Characterization Report
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April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental |Geotechnical | Materials 1
1.0 INTRODUCTION
Terracon Consultants, Inc. (Terracon) has completed a Site Characterization Assessment
(site investigation) at the SLC Station Center site (site) located at 550 and 570 West 400
South, Salt Lake City, Utah (Exhibit 1). This site investigation was completed per the
Additional Site Characterization Work Plan (ASCW; Terracon 2022b) dated July 21, 2022,
and the Salt Lake County Brownfields Assessment Sampling and Analysis Plan (SAP;
Terracon 2022b), dated September 8, 2022. This site investigation was conducted to
address data gaps identified in the ASCW and SAP, as required, to determine whether the
site meets the Utah Department of Environmental Quality, Division of Waste Management
and Radiation Control’s (DWMRC) requirements for risk-based closure per Utah
Administrative Code (UAC) R315-101.
1.1 Site Description
The SLC Station Center site is comprised of 1.89-acres of land currently owned by the
University of Utah Research Foundation (University). The site comprises seven parcels
consisting of the addresses, Salt Lake County Assessor Parcel Numbers (APNs), and land
uses listed below:
Address APN Acres Use
550 W. 400 South 15-01-302-012 0.14 Storage Building/Outdoor storage
yard
550 W. 400 South 15-01-302-011 0.14 Outdoor storage yard
570 W. 400 South 15-01-302-007 0.63 Former ZCMI Carriage
House/Outdoor storage yard
570 W. 400 South 15-01-302-013 0.16 Outdoor storage yard
570 W. 400 South 15-01-302-010 0.18 Former auto repair shop
570 W. 400 South 15-01-302-009 0.16 Office/warehouse building
570 W. 400 South 15-01-302-008 0.48 Office/warehouse building
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Exhibit 1 (Appendix A) presents the site location on a portion of the USGS topographic
map.
1.2 Site History and Summary of Previous Assessment and
Corrective Action
The site has a long history of industrial uses including automobile and heavy equipment
repair, heating plants, a paint shop, a landscaping and erosion control contractor, and other
miscellaneous industrial-type clients from the early 1900s through 2022. The site was most
recently occupied by WRR Industries, Inc., a landscaping and erosion control contractor.
The buildings on the property were used for office space and dry storage of miscellaneous
new and old stock materials such as auto parts, landscaping equipment, vehicle storage,
and diesel truck repair bays.
Terracon Consultants, Inc. (Terracon) completed Phase I Environmental Site Assessments
(ESA) at the site in 2018 and 2021 (Terracon 2018; Terracon 2021). The Phase I ESAs
identified multiple Recognized Environmental Conditions (RECs) including a long history of
industrial use and the presence of sumps, staining, oil-water separators, leaking drums, and
adjacent sites with known contamination (Quality Plating).
To evaluate conditions associated with the identified RECs, Terracon performed a Limited
Site Investigation in 2017 (LSI; Terracon 2017). The 2017 LSI involved advancement of
eight boreholes to 15 feet below ground surface (bgs) to evaluate on-site soil and
groundwater impacts from the historical industrial uses of the site and adjacent properties
(B-1 through B-8 on Exhibit 2). Four of the borings were advanced inside the existing
warehouse structure to evaluate potential contamination within the building footprint as
follows:
the bay door on 400 South to evaluate potential off-site impacts and the interior
warehouse space (boring B-6)
a floor drain and oil/water separator identified in the open warehouse space (borings
B-7 and B-8, respectively)
an oil/water separator in the northern part of the building (boring B-3).
The additional four borings were advanced within the yard to evaluate potential
contamination in outdoor areas of the site as follows:
two drum storage areas with visible staining (borings B-2 and B-4)
near the southeastern-adjoining Quality Plating property (boring B-5)
at the northeast corner of the building down-gradient of two interior sumps (boring
B-1).
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The LSI results indicated that a portion of on-site groundwater was impacted by the
presence of several dissolved-phase chlorinated volatile organic compounds (VOCs)
including tetrachloroethene (PCE), trichloroethene (TCE), cis-1,2-dichloroethene (DCE),
trans-1,2-dichloroethene (trans-1, 2 DCE), and vinyl chloride (VC). The highest
concentration of PCE was present at boring B-3 at a concentration of 34.1 mg/L which
indicated the potential presence of dense non-aqueous phase liquid (DNAPL). The source of
the contaminants was not identified, but the highest concentrations of PCE at boring B-3
were located near an oil-water separator in the northeastern portion of the site. The LSI did
not identify VOC impacts in site soils. The LSI identified nominal petroleum impacts in site
soils and groundwater and did not identify metals impacts in site soils and groundwater
(Terracon 2017).
Additional site investigation was subsequently performed by Environmental Contractors
Incorporated (ECI) during 2018. ECI installed seven additional soil borings (B-9 through B-
15 on Exhibit 2) in March 2018 and August 2018 to further define the horizontal extent of
groundwater VOC contamination (ECI 2018). Five monitoring wells (MW-1 through MW-5 on
Exhibit 2) were subsequently installed by ECI (ECI 2020).
ECI engaged DWMRC to provide remediation oversight in September 2018. Multiple
remedial Work Plans and Corrective Action Plans were prepared by ECI and submitted to
DWMRC. Structural demolition, soil removal, and groundwater remediation was
subsequently conducted by ECI at the site from 2018 to 2021 (Exhibit 3) per the DWMRC-
approved plans.
The lean-to structure located south of the former boiler room was demolished.
The concrete floor of the former boiler room, the oil/water separator, and associated
soil to a depth of approximately 12 feet bgs were removed.
A groundwater extraction trench and stacked-tray air stripper were operated in the
northeast area of the site from April 2019 through November 2019 (ECI 2020).
From March 2020 to July 2020 approximately 8,066 pounds of 97% remediation-
grade crystalline potassium permanganate (KMnO4) ~4% solution was added to
extracted groundwater and re-injected via trenches and eight soil borings (ECI
2020).
From June 2021 to October 2021 approximately 4,630 pounds of ~4% KMnO4
solution was added to extracted groundwater and re-injected via 14 soil borings
(ECI 2022).
ECI’s groundwater remediation activities generally appeared to reduce VOC concentrations
in site groundwater. However, PCE, TCE, and VC were reported above EPA Maximum
Contaminant Levels (MCLs) in site groundwater during ECI’s final sampling event conducted
in September 2021 (ECI 2022) as summarized below:
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SLC Station Center | Salt Lake City, Utah
April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials 4
PCE was reported at concentrations of 0.01 mg/L and 11.1 mg/L at MW-2 and MW-
3, respectively, which exceeded the MCL of 0.005 mg/L
TCE was reported at a concentration of 0.0466 mg/L at MW-2, which exceeded the
MCL of 0.005 mg/L
VC was reported at concentrations of 0.055 mg/L, 0.0162 mg/L and 0.0079 mg/L at
MW-2, MW-3, and MW-4, respectively, which exceeded the MCL of 0.002 mg/L.
ECI’s September 2021 groundwater sampling results indicated that PCE concentration
rebound occurred at MW-3, suggesting an ongoing source of PCE contamination. PCE
concentrations at MW-3 were reported at <0.001 mg/L in July 2021, increased to 18.4 mg/L
in August 2021, then declined to 11.1 mg/L in September 2021 (Table C5). TCE at MW-3
experienced concentration rebound from July 2021 to August 2021, rising from <0.001
mg/L to 5.75 mg/L, and then declining to <0.001 mg/L in September 2021 (Table C5). VC
concentrations rebounded at MW-2, MW-3, and MW-4 in August 2021 and/or September
2021 (Table C4 through Table C6).
Detectable concentrations of additional VOC compounds were reported in MW-1, MW-2,
MW-3, MW-4, and MW-5 in September 2021 (ECI 2022). However, the VOC concentrations
were below MCLs.
ECI did not evaluate VOC concentrations in soil gas.
2.0 SITE CHARACTERIZATION SCOPE AND
METHODS
The following sections detail the scope and methods of the site characterization sampling
that was conducted by Terracon in January 2023 and February 2023 to investigate the data
gaps identified in the ASCW and SAP.
2.1 Standard of Care
Terracon’s services were performed in a manner consistent with generally accepted
practices of the profession undertaken in similar studies in the same geographical area
during the same time period. Terracon makes no warranties, either express or implied,
regarding the findings, conclusions, or recommendations. Please note that Terracon does
not warrant the work of laboratories, regulatory agencies, or other third parties supplying
information used in the preparation of this report.
2.2 Sampling Scope
Field sampling consisted of the following data collection:
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SLC Station Center | Salt Lake City, Utah
April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials 5
Groundwater Sampling: One sample was collected from each of the five existing
monitoring wells for analysis of VOCs to assess current conditions in groundwater at
the site (last sampled in September 2021).
Soil Gas Sampling: Soil gas samples were collected from twelve locations within
the known plume boundary for analysis of VOCs to assess VOC impacts in soil gas
originating from VOCs in groundwater at the site. Five of the soil gas samples were
co-located with the existing monitoring wells and the remaining seven soil gas
sample locations were distributed between the monitoring well locations.
High-Resolution Site Characterization Survey: A High-Resolution Site
Characterization (HRSC) survey was performed using Membrane Interface Probe-
Hydraulic Profiling Tool (MIHPT) technology (Section 2.3.4) to further assess the
horizontal and vertical extent of contamination and identify ongoing source areas.
Sixteen MIHPT borings were advanced at the site.
Table 1 below provides a summary description of the sample locations, sample types,
laboratory analyses, and sampling rationale. Exhibit 2 shows the locations of the
monitoring wells and soil gas sampling locations.Exhibit 10 shows the locations of the
HRSC survey borings.
TABLE 1
SUMMARY OF SAMPLING LOCATIONS
Sample
Location Rationale Sample
Locations Sample Matrix Analytes
Monitoring
Wells
Determine current VOC
groundwater concentrations in
existing monitoring wells
5 Groundwater VOCs
Soil Gas
Probes
Determine VOC concentrations in
soil gas 12 Soil Gas VOCs
HRSC
Survey
MIHPT borings to assess the
horizontal and vertical extent of
soil and groundwater VOC
contamination and identify
ongoing source areas
16 Soil and
Groundwater
VOCs
(qualitative field
analysis)
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SLC Station Center | Salt Lake City, Utah
April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials 6
2.3 Sampling Methods
2.3.1 Utility Clearance and Drilling Activities
The public utility location service (Blue Stakes of Utah) was notified at least 48 hours prior
to commencing drilling activities. A private utility location service was used to locate
potential utilities and other subsurface obstacles in the immediate vicinity of each boring
location.
Soil gas probe installation services were performed by Utah-licensed well driller Direct Push
Services. Terracon environmental personnel directed and supervised the soil gas probe
installation.
2.3.2 Groundwater Sampling
Groundwater samples were collected using low-flow sampling methods following the
procedures detailed in Terracon Standard Operating Procedure (SOP) 12,Groundwater
Monitoring Well Sampling. Groundwater samples were dispensed directly into laboratory-
supplied sample containers and analyzed for VOCs via United States Environmental
Protection Agency (EPA) Method 8260B.
Prior to sampling, Terracon personnel measured the static groundwater level in each well to
the nearest 0.01-foot at the top of the well casing. Terracon personnel surveyed the top-of-
casing elevations for monitoring wells MW-1, MW-2, and MW-3 to determine the
groundwater flow direction and develop a potentiometric surface map for the southeastern
portion of the site (Exhibit 4).
2.3.3 Soil Gas Sampling
Soil gas samples were collected following the procedures detailed in Terracon SOP 9,Soil-
gas/Vacuum Probe Installation, and Terracon SOP 9A,Soil Gas Sampling. Soil gas sampling
was conducted by using a direct-push drill rig to advance borings to an approximate depth
of 5 feet bgs followed by the installation of soil gas probes. The probes consisted of a 6-inch
long stainless steel disposable screen anchored to polyethylene tubing that extends to the
surface. A one-foot, 10–20 silica sand pack was placed around the probe and the remainder
of the anulus was filled with hydrated bentonite chips. Care was taken to ensure adequate
hydration of the chips to avoid air flow through the bentonite. Due to interior drill rig access
limitations, a sub-slab Vapor Pin® was installed in lieu of a soil gas probe at one soil gas
sampling location (sample location SV-4,Exhibit 2)
The soil gas probes were allowed to equilibrate for a minimum of 24 hours prior to
sampling. Prior to sample collection, Terracon conducted leak detection tests at each sample
location. The first test evaluated the sample train for leaks by conducting a shut-in test on
the sample train after it was fully assembled. The shut-in test was conducted by closing the
valve to the gas probe and applying a vacuum to the closed sample train while monitoring
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April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials 7
the pressure on an inline vacuum gauge for one minute. If the sample train held a constant
vacuum pressure, the sample train was deemed to be airtight. Following the shut-in test,
the air that was evacuated from the sample train to generate the vacuum was purged.
A second leak detection test was conducted by introducing helium gas at a concentration
between 15 and 20 percent into a sampling shroud placed over the probe. If helium is
measured in the sampling train at a concentration of greater than 7,500 parts per million
(ppm) it will indicate there was potential breakthrough in the sampling train and all
connections will be re-examined and tightened where necessary and re-tested.
The soil gas samples were collected in laboratory-supplied, batch-certified clean 1,000 mL
Summa® canisters, using new Teflon® tubing and a flow regulator that restricted flow to no
more than 200 mL per minute. Soil gas samples were analyzed for VOCs via EPA Method
TO-15. Following the collection of the samples, the soil gas probes were left in place to allow
for additional sample collection in the future, if necessary.
2.3.4 High Resolution Site Characterization Survey
A HRSC survey was performed using MIHPT technology to assess the horizontal and vertical
occurrence of VOC contamination in soil and groundwater and identify possible ongoing
source areas (i.e., sorbed-phase or residual DNAPL). A team of HRSC specialists, direct-
push drilling rig, and a command center vehicle housing all applicable technologies and
equipment were deployed to perform the HRSC survey at the site.
The MIHPT probe is a logging tool that indicates volatile hydrocarbon and solvent
contamination, soil electrical conductance, and hydraulic indicators of formation
permeability. An inert carrier gas is continually swept behind a heated membrane in the
probe, delivering diffused VOCs to a series of detectors in the command center vehicle. The
detectors each respond to different analyte properties, which allows for differentiation of
contaminants (i.e., volatile petroleum hydrocarbons or chlorinated solvents) and provides
the ability to map out the contaminant plume from source to extent. The MIHPT system
features multiple membrane interface detectors, sensors, and tools to assess subsurface
characteristics and VOC occurrence, including:
Electrical Conductivity (EC) sensor: The EC sensor creates a log of EC versus depth.
The EC of soil varies with soil grain size and a correlation can be made to soil type
relative to the EC. Broadly, sandy soils correlate to lower EC values, and EC
increases as soil grain size decreases to silt and clay-sized particles.
Hydraulic Profiling Tool (HPT): The HPT creates a log of the relative formation
permeability versus depth by injecting clean water at a constant flow rate through
the direct push rods and into adjacent soil via an injection port on the side of the
probe. Sensors record the flow rate and back pressure which are used to estimate
hydraulic conductivity relative to depth. The hydraulic conductivity values estimated
by the HPT are useful in understanding zones within the subsurface exhibiting higher
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or lower relative permeabilities. Understanding soil permeability can aid in the
understanding of contaminant transport, storage, and flux.
Photoionization Detector (PID): The PID responds to VOCs (i.e., petroleum
hydrocarbons and chlorinated solvents) and creates a log versus depth. Response is
measured in microvolts (µV) and can be used as a semi-quantitative method to
compare VOC intensity along both the vertical profile of an individual boring and
relative to other boring locations.
Flame Ionization Detector (FID): The FID responds to combustible VOCs only (i.e.,
petroleum hydrocarbons). Response is measured in µV and can be used as a semi-
quantitative method to compare petroleum hydrocarbon intensity along both the
vertical profile of an individual boring and relative to other boring locations.
Halogen Specific Detector (XSD): The XSD responds only to halogenated compounds
(i.e., chlorinated solvents). This detector creates a log of halogenated response
versus depth. Response is measured in µV and can be used as a semi-quantitative
method to compare halogenated compound intensity along both the vertical profile
of an individual boring and relative to separate boring locations.
This VOC contamination, lithology, and hydraulic conductivity data was captured every inch
the tooling was advanced and utilized in real time by field personnel to determine the next
boring locations.
Sixteen MIHPT borings were advanced to depths ranging from 33 feet bgs to 53 feet bgs. A
daily HRSC field report was generated by the contractor for review by Terracon. This report
included all preliminary data, boring locations completed, and quality control results.
Electronic data files were also transmitted to Terracon daily for data management purposes
and to optimize subsequent testing locations (Appendix C).
After the field characterization was completed, the HRSC survey data deliverables were used
to develop a three-dimensional (3-D) model of the plume (Exhibit 10 through Exhibit 12).
2.3.5 Field QA/QC Samples
Field duplicates were collected at rate of 10 percent with one trip blank (laboratory-supplied
blank) per sample shipment. One trip blank and one duplicate groundwater VOC sample
were collected. Field duplicate samples and trip blanks are not applicable to soil gas
sampling and were not collected.
The original sample and corresponding duplicate samples are provided below:
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Groundwater Samples
Sample ID Duplicate ID Analytes
MW-1 DUP-1 VOCs
2.3.6 Equipment Decontamination
Clean disposable, single-use sampling equipment was used to conduct the groundwater and
soil gas sampling and was properly disposed of after each use. Drilling equipment was
cleaned using a high-pressure washer prior to beginning the project and between soil gas
probe locations.
MIPHT equipment was decontaminated using a three-bucket approach once all rods and the
probe are removed from each borehole. Wet rods were rinsed, washed with Alconox, then
rinsed again.
2.3.7 Site Restoration
MIPHT borings were backfilled with granular bentonite and hydrated with culinary water.
Soil gas probes were left in place to allow for additional future sampling, if needed.
3.0 SITE CHARACTERIZATION RESULTS
The following sections summarize the laboratory analytical sample and HRSC survey results.
Groundwater sample results are presented in Exhibit 5 through Exhibit 7. Soil gas sample
results are presented in Exhibit 8 through Exhibit 9. HRSC survey results are presented in
Exhibit 10 through Exhibit 12. A summary of the laboratory analytical results is provided
in Table C1 through C2 (Appendix B). A copy of the Eagle Synergistic HRSC Survey Report
is provided in Appendix C. Copies of the analytical reports and sample chain-of-custody
records are provided in Appendix D.
Groundwater samples (including field duplicates and trip blanks) were placed in iced coolers
and shipped under chain-of-custody protocols via overnight courier to Pace Analytical
National Center for Testing and Innovation (Pace National) in Mt. Juliet, Tennessee (a Utah-
Certified Laboratory). Soil gas samples were shipped under chain-of-custody protocols via
overnight courier to Pace National in Mt. Juliet, Tennessee (a Utah-Certified Laboratory).
Laboratory samples were delivered to the analytical laboratory within holding times for all
analytical methods.
Laboratory samples were analyzed using the following methods:
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SLC Station Center | Salt Lake City, Utah
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TABLE 2
ANALYTICAL METHOD SUMMARY
Parameter Matrix Analytical Method No. of
Samples1
VOCs Groundwater SW-846 8260B 6
VOCs Soil Gas TO-15 12
1Includes field duplicate samples.
Constituent concentrations in groundwater were compared to EPA Maximum Contaminant
Levels (MCLs), Utah Ground Water Quality Protection Standards (UGWQS; UAC-R317-6-
2.1), and EPA Target Groundwater Concentration (TGC) Vapor Intrusion Screening Levels
(VISLs) for Residential and Commercial use scenarios. Constituent concentrations in soil gas
samples were compared to EPA Target Sub-Slab and Near-source Soil Gas Concentration
(TSSNSGC) VISLs for Residential and Commercial scenarios.
3.1 Groundwater Data Summary
Five groundwater samples and one field duplicate were analyzed for VOCs (Exhibit 5
through Exhibit 7, Table C1).Groundwater samples were reported at concentrations
exceeding the following thresholds and screening levels:
PCE:
o PCE exceeded 1 mg/L at MW-1
o PCE exceeded the EPA MCL, UGWQS, and/or EPA VISL Commercial TGC at
MW-1, MW-2, and MW-3
TCE:
o TCE exceeded 1 mg/L at MW-3
o TCE exceeded the EPA MCL, UGWQS, and/or EPA VISL Commercial TGC at
MW-1, MW-2, and MW-3
o TCE exceeded the EPA VISL Residential TGC at MW-5
DCE:
o DCE exceeded 1 mg/L at MW-2 and MW-3
o DCE exceeded the EPA MCL and UGWQS for DCE at MW-1, MW-2, and MW-3
Site Characterization Report
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April 18, 2023 | Terracon Project No. 61217142
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VC:
o VC exceeded the EPA MCL, UGWQS, and/or EPA VISL Commercial TGC at MW-
1, MW-2, MW-3, and MW-5
o VC exceeded the EPA VISL Residential TGC at MW-4
Laboratory Method Detection Limits exceeded one or more screening values for the VOC
compounds acrolein, acrylonitrile, bromodichloromethane, carbon tetrachloride, chloroform,
1,2-dibromo-3-chloropropane, 1,2-dibromoethane, hexachloro-1,2-butadiene, and
naphthalene (Table C1).
3.2 Soil Gas Data Summary
Twelve soil gas samples were analyzed for VOCs (Exhibit 8 through Exhibit 9, Table C2).
Soil gas samples exceeded the following thresholds and screening levels:
PCE:
o PCE exceeded the EPA VISL Commercial TSSNSGC at SV-5, SV-7, SV-10, and
SV-12.
o PCE exceeded the EPA VISL Residential TSSNSGC at SV-1, SV-2, SV-3, and
SV-8.
TCE:
o TCE exceeded the EPA VISL Commercial TSSNSGC by more than one order of
magnitude at SV-3 and SV-8.
o TCE exceeded the EPA VISL Commercial TSSNSGC at SV-1, SV-3, SV-4, SV-5,
SV-7, SV-8, SV-10, and SV-12.
o TCE exceeded the EPA VISL Residential TSSNSGC at SV-2, SV-6, SV-9, and
SV-11.
Chloroform:
o Chloroform exceeded the EPA VISL Commercial TSSNSGC at SV-3 and SV-8.
o Chloroform exceeded the EPA VISL Residential TSSNSGC for chloroform at
SV-7.
Benzene: Benzene exceeded the EPA VISL Residential TSSNSGC at SV-12.
Laboratory Method Detection Limits exceeded one or more screening values for the VOC
compounds 1,3-butadiene, 1,2-dibromoethane, hexachloro-1,2-butadiene, and naphthalene
(Table C2).
PCE and TCE concentrations in soil gas at sample locations SV-5 and SV-7 suggests that a
preferential pathway for migration of vapor-phase contamination exists near the southern
site boundary.
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3.3 HRSC Survey Data Summary
A HRSC survey was performed at the site which consisted of advancing sixteen MIHPT
borings throughout exterior areas of the eastern portion site (Exhibit 10 through Exhibit
12).The XSD responses results suggest that a large and previously undocumented
extension of the chlorinated solvent plume is present in groundwater on the northern
portion of the site. These previously undocumented chlorinated solvent impacts in
groundwater extend to depths of at least 45 feet bgs in apparent silt and silty clay soils.
Additionally, in the previously known plume area, the HRSC survey results indicate that the
screen intervals for existing monitoring wells MW-1, MW-2, and MW-3 are too shallow to
fully intercept the depth intervals where the highest XSD responses were recorded. Thus,
the groundwater sample results from MW-1, MW-2, and MW-3 may not be fully
representative of maximum chlorinated solvent concentrations in groundwater at these
locations.
XSD responses from MIHPT boring M-15 (Exhibit 10) indicate that high concentrations of
chlorinated solvents are present above the groundwater table in soil at this location. This
indicates that location M-15 and/or areas west of M-15 inside the existing building may
represent a potential source area for the release.
At this time, the highest XSD responses recorded by the MIPHT borings cannot be directly
correlated to concentrations of specific chemical compounds (i.e., PCE or TCE). However,
based on calibration checks that were performed throughout the HRSC survey using known
standards, the highest XSD responses likely correlate to total chlorinated solvent
concentrations between 5 mg/L and 10 mg/L which exceeds PCE and/or TCE concentrations
measured in the existing monitoring wells during the January 2023 sampling event.
Detector responses that could suggest the presence of petroleum contamination (i.e.,
correlated PID and FID responses) were not observed in any of the MIHPT borings. A copy
of the HRSC survey report is provided in Appendix C.
4.0 DATA QUALITY ASSESSMENT
Laboratory analytical data was subject to internal reduction and validation prior to external
release of the data, as detailed in the laboratory’s Quality Assurance Manual. Following
receipt of the laboratory analytical results by Terracon, the data were reviewed to evaluate
compliance with Data Quality Indicators (DQIs) outlined in Sections D1, D2, and D3 of the
Brownfields Quality Assurance Project Plan (QAPP) (Terracon 2022a).
Documentation provided with the laboratory analytical results reports included case
narratives; analytical data with minimum method detection limits (MDLs) and reported
detection limits (RDLs) reporting limits listed for all analyses; surrogate recoveries for gas
chromatography/mass spectroscopy (GC/MS) analyses with laboratory control limits; chain-
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of-custody records; and a quality control summary including method blanks, matrix
spike/matrix spike duplicates (MS/MSD) with control limits, laboratory control samples and
duplicates (LCS/LCSD) with control limits; and application of data qualifiers where
warranted.
Assessment of the DQIs for Precision, Bias and Accuracy, Representativeness,
Comparability, Completeness, and Sensitivity are presented in the following subsections.
4.1 Precision
Precision was evaluated on the basis of relative percent difference (RPD) as a measure of
reproducibility between LCS/LCSD pairs and MS/MSD pairs (analytical precision) and
between field samples and field duplicate samples (field precision).
The RPD is calculated to evaluate precision using the following equation.
RPD =𝑿𝟎−𝑿𝟎
ቀ𝑿𝟎+𝑿𝟎
𝟎ቁ
𝒙𝟎𝟎𝟎Where X1 and X2 are the reported concentrations of the
samples being evaluated.
4.1.1 Analytical Precision
A summary of the Quality Control assessment for analytical precision is presented below.
Laboratory Sets L1576151 and L1577035 (Groundwater Samples):
o The RPDs for the LCS/LCSD pairs were within the laboratory control limits. A
MS/MSD sample was not analyzed from this data set.
Laboratory Set L1577012 (Soil Gas Samples):
o The RPDs for the LCS/LCSD pairs were within the laboratory control limits. A
MS/MSD sample was not analyzed from this data set.
Based on the results of the RPD analyses of the LCS/LCSD samples and the evaluation
provided above,analytical precision is considered within control for Laboratory Sets
L1576151, L1577035, and L1577012. Although MS/MSD samples were not analyzed for
these data sets, other DQIs were within control. This is not anticipated to affect the usability
of this data or the conclusions of this report.
4.1.2 Field Precision
One field duplicate groundwater sample was collected and analyzed. Collection of field
duplicates does not apply to soil gas sampling. A summary of the Quality Control
assessment for field precision is presented below.
Per the QAPP, analytical results for original samples and field duplicate pairs that are less
than five times the laboratory’s RDL in the analytical reports were considered within control
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if the difference between the sample concentration and its duplicate was less than two times
the RDL. When analytical results for the original sample and the field duplicate pairs are
greater than five times the RDL the duplicate pair was considered within control when the
RPDs for the field duplicate pairs were within the QAPP’s control limits (25% for
groundwater samples).
Laboratory Set L1576151 (Groundwater Samples): One duplicate groundwater
sample pair was run for VOCs. The duplicate pairs are considered within control as all
the analytes achieved the requirements listed above (Table C8.1).
Based on the results of the RPD analyses of the field duplicate sample pairs and the
evaluation provided above,field precision is considered within control for Laboratory
Set L1576151.
4.2 Bias and Accuracy
Bias and Accuracy were evaluated through a review of the method blanks, trip blanks,
percent recoveries for LCS/LCSD, and percent recoveries for MS/MSD summaries provided
by the laboratory. Method blanks and trip blanks were considered within control (i.e.,
accuracy) if the constituents analyzed were less than the analytical method reporting limits.
LCS/LCSD and MS/MSD analyses were considered within control if the percent recoveries
were within the laboratory’s established limits (i.e.,bias). A summary of the Quality Control
assessment for Bias and Accuracy is presented below.
Laboratory Sets L1576151 and L1577035 (Groundwater Samples):
o Accuracy–Method Blank: All analytes in the method blanks were less than
the laboratory RDLs.
o Accuracy–Trip Blank: All analytes in the trip blank were less than the
laboratory RDLs.
o Surrogate Recoveries:Surrogate recoveries were within control.
o Bias–LCS/LCSD Percent Recoveries:The LCS and LCSD for chloromethane
(Batch WG1989060) and the LCSD for tetrachloroethene (Batch WG1990087)
were above the established quality control range for accuracy. A J4 value was
assigned to this data. Results for chloromethane in the affected samples were
not detected above RDLs or applicable screening levels despite this high bias,
and chloromethane is not considered a contaminant of concern at the site.
Multiple samples exceeded regulatory screening levels for tetrachloroethene.
They are considered to exceed these levels despite the high bias. As a result,
the percent recoveries for these analytes being outside of the laboratory’s
control limits is not anticipated to affect the usability of the data.
o Bias–MS/MSD Percent Recoveries:A MS/MSD sample was not analyzed
for these data sets.
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Laboratory Set L1577012 (Soil Gas Samples):
o Accuracy–Method Blank: All analytes in the method blanks were less than
the laboratory RDLs.
o Accuracy–Trip Blank: A trip blank was not submitted for the soil gas
analysis.
o Surrogate Recoveries:Surrogate recoveries were within control.
o Bias–LCS/LCSD Percent Recoveries:The percent recoveries in the
LCS/LCSD were within the laboratory’s control limits.
o Bias–MS/MSD Percent Recoveries:A MS/MSD sample was not analyzed
for this data set.
Bias and Accuracy are considered within control for Laboratory Sets L1576151,
L1577035, and L1577012. Some minor exceptions exist but are not expected to have an
impact on the usability of the results. Although MS/MSD samples were not analyzed for
these data sets, other DQIs were within control. This is not anticipated to affect the usability
of this data or the conclusions of this report.
4.3 Representativeness
Representativeness is a qualitative parameter most concerned with proper design and
execution of the sampling program to produce data that accurately and precisely represent
environmental conditions. Selection of analytical methods, sampling methods, and locations
representative of the media sampled were set forth in the ASCW and SAP.
Representativeness in the field was achieved by implementing the approved ASCW and SAP
and using appropriate sampling methods, sample containers, sample handling, and
preservation methods.Representativeness in the laboratory was achieved by using the
proper analytical procedures, meeting sample holding times, and analyzing and assessing
laboratory QA/QC samples.
Field Representativeness
Sampling was conducted in general accordance with the ASCW and SAP and associated
Standard Operating Procedures. The following deviations from the ASCW and SAP occurred
during the sampling event.
The soil gas probe for soil gas sample SV-4 was replaced with a sub-slab Vapor
Pin™ due to drill rig access issues. It is unlikely that this minor change had a
significant effect on data quality.
The groundwater sample from monitoring well MW-2 was broken by the laboratory
during handling and noted. MW-2 was re-sampled five days later (Lab Report
L1577035). It is unlikely that this difference in sampling dates had a significant
effect on data quality.
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Laboratory Representativeness
Sample analyses followed the analytical methods listed in the ASCW and SAP or equivalent
EPA-approved variations of the listed methods.
Sample analyses followed the analytical methods listed in the ASCW and SAP or
equivalent EPA-approved methods or variations of the listed methods; and were
analyzed within method-specified holding times.
The analyte concentration for 2-propanol in soil gas sample SV-1 (Batch
WG1992097) exceeded the upper limit of the calibration range of the instrument
established by the initial calibration (ICAL). The fact that the calibration failed, 2-
proponal was detected at least three orders of magnitude higher in this sample than
any other sample collected from the site, and that 2-propanol is not considered a
contaminant of concern at the site based on historical use of the site indicates that
this data should be rejected. This is not expected to affect the usability of the
remaining data or conclusions of this report.
Representativeness is considered within control.
4.4 Comparability
Comparability is a qualitative term expressing the confidence with which one data set can
be compared to another. The comparability goal was achieved using standardized sampling
procedures in accordance with the SAP and QAPP, use of standardized and approved
laboratory analytical methods, and reporting the analytical results in appropriate and
consistent units.
Sampling was conducted in general accordance with the ASCW and SAP and
associated SOP. Deviations from the ASCW and SAP occurred during the sampling
event and are discussed in Section 4.3.
Sample analyses followed the analytical methods listed in the ASCW and SAP,
equivalent approved methods, or variations of the listed methods.
The units of measure reported by the laboratory were consistent with the units of
measure used by the regulatory screening levels.
The number of field duplicates specified in the approved ASCW and SAP was at
least 10% of the field samples.
o Groundwater Samples
VOCs: One field groundwater duplicate for five groundwater samples or
20%, which exceeds to 10% goal.
Comparability is considered within control.
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4.5 Completeness
Completeness is the ratio of valid measurements to the number of planned measurements,
expressed as a percentage, and the completeness goal for the project is 90%. The sampling
program is deemed to meet the DQIs for valid measurements. The samples collected were
submitted and analyzed by the laboratory according to the chain-of-custody. Additionally,
the data collection followed the procedures and requirements as described in the approved
QAPP, SAP, and ASCW. The data are considered usable as qualified. The analytical
completeness for this sampling event was 100%.
The SAP detailed six groundwater samples (including field duplicates) and twelve soil
gas samples, all of which were properly collected and analyzed by the laboratory.
Although one analyte (2-proponal) for one soil gas sample (SV-1) was rejected, the
sample completeness was well above the 90% threshold.
With acknowledgement of qualified results for the analytes listed above, the
analytical data are acceptable for their intended use to evaluate constituent
concentrations compared to applicable regulatory screening levels.
4.6 Sensitivity
Sensitivity refers to the capability of a method or instrument to discriminate between
measurement responses representing different levels of the variable of interest. The
sensitivity goal is for RDLs to be below comparative screening levels, which vary
considerably by analyte and in value and applicability. Overall, the level of sensitivity was
sufficient to allow the identification of soil and groundwater constituents above applicable
regulatory screening levels.
Laboratory Sets L1576151 and L1577035 (Groundwater Samples):
o VOCs: The RDLs were all less than the EPA VISLs and MCLs, as applicable, for
analytes reported as less than the RDL. The only exceptions to this were
acrolein, acrylonitrile, bromodichloromethane, carbon tetrachloride,
chloroform, 1,2-dibromo-3-chloropropane, 1,2-dibromoethane, hexachloro-
1,2-butadiene, and naphthalene which exceeded at least one of these
screening levels in at least one sample. None of these groundwater samples
had detections of these analytes or are considered contaminants of concern at
the site. Hence, this sensitivity issue for groundwater samples is not
anticipated to affect the conclusions of this report.
Laboratory Set L1577012 (Soil Gas Samples):
o The RDLs were all less than the EPA VISLs, as applicable, for analytes
reported as less than the RDL. The only exceptions to this were 1,3-
butadiene, 1,2-dibromoethane, hexachloro-1,2-butadiene, and naphthalene.
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None of these groundwater samples had detections of these analytes or are
considered contaminants of concern at the site. Hence, this sensitivity issue
for groundwater samples is not anticipated to affect the conclusions of this
report.
The DQIs for Sensitivity were achieved. As such,Sensitivity was deemed acceptable.
5.0 UPDATED CONCEPTUAL SITE MODEL
This update to the conceptual site model (CSM) refines the initial CSM that was presented in
the ASCW and presents the current understanding of the release based on the
physicochemical properties of the contaminants of concern in combination with the most
recently collected site-specific data. The goals of the updated CSM are to:
Identify the contaminants of concern, their relative subsurface distribution, and
related environmental concerns associated with the release.
Define the remedial goals associated with the environmental concerns.
Identify informational data gaps and appropriate next steps.
The subsections identified below are core components to the updated CSM.
5.1 Geologic and Hydrogeologic Information and Setting
Near-surface soils consist of sandy gravel fill material to a depth of approximately 1 to 3.5
feet bgs. Up to 15 feet bgs the fill materials are underlain by native silt and silty clay that is
occasionally interbedded with thin silty sand and poorly-graded sand layers (Terracon
2017). HPT data from the HRSC survey indicates that silts and silty clays predominate to
depths of up to 53 feet bgs.
Groundwater is present at a depth of approximately 8–9 feet bgs in the existing monitoring
wells. Groundwater flow is in a southerly direction with a shallow hydraulic gradient of
approximately 0.01 feet/foot (Exhibit 4).
Surficial geologic units are underlain by sediments deposited within Lake Bonneville which
range from sand and gravel to silt and clay. The silts and clays generally represent
sediments deposited during deep water conditions away from canyon mouths and the
mountain front, while lake-deposited sand and gravel generally represent near-shore
sediments and deltaic deposits near canyon mouths (UGS 2009). Fine-grained silt and clay
deposits are expected to occur below surficial deposits at the site as the nearest canyon
mouth/mountain front depositional area is located approximately two miles to the northeast
at the mouth of City Creek Canyon.
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Alluvial and lacustrine sediments of considerable thickness underlie the Lake Bonneville
deposits. Estimates of the total thickness of unconsolidated Quaternary deposits in the Salt
Lake Valley range from approximately 130 feet to as much as 2,000 feet (Wong et al.
2002), depending on the proximity to the deepest part of the basin. Below this, semi-
consolidated and consolidated sediments extend to a depth of up to 8,500 feet, below which
bedrock is found (Wong et al. 2002).
The basin-fill aquifer system in the Salt Lake Valley includes a confined aquifer in the central
and northern parts of the basin (where the site is located), a deep unconfined aquifer
between the confined aquifer and the mountains, and a shallow unconfined aquifer overlying
the artesian confined aquifer (UGS 2009). The confining layer is between 40 and 100 feet
thick, and the top of the layer is between 50 and 150 feet below the land surface (UGS
2009). The shallow unconfined aquifer overlies the confining layer and is composed
primarily of fine-grained sediments that are only slightly more permeable than the confining
layer; in some areas it is difficult to differentiate between the two (UGS 2009). The shallow
unconfined aquifer yields little water, and the water is generally of low quality (UGS 2009).
5.2 Chlorinated Solvent Properties and Phased Spatial Distribution
5.2.1 Chlorinated Solvent Physical and Chemical Properties
PCE is a chlorinated ethene that is currently and has historically been used as a solvent in
dry cleaning, textile processing, and metal cleaning operations. Under ambient conditions
PCE will readily evaporate and generate PCE vapor. PCE is identified to be a probable human
carcinogen and short-term exposure to high concentrations may affect the central nervous
system. PCE has a density of 1.622 grams per cubic centimeter (g/cm3), which is greater
than the density of water, indicating immiscible PCE will ‘sink’ below the groundwater
surface, and is classified as a DNAPL.
PCE has a chemical formula of C2Cl4 and consists of double bonded carbon atoms saturated
with chlorines. Pure PCE released into the subsurface can exist in four distinct phases that
present unique risks to receptors: pure-phase (i.e., DNAPL), sorbed-phase, dissolved-phase,
and vapor-phase.
In the dissolved phase, the sequential replacement of chlorine atoms with hydrogen atoms
may occur under natural groundwater conditions and results in the formation of breakdown
products that themselves are environmental contaminants of concern and include TCE
(C2HCl3), DCE (C2H2Cl2), and VC (C2H3Cl). In the subsurface, PCE and related breakdown
products are considered recalcitrant contaminants because of their density, mobility in the
aqueous phase, high toxicity, and general lack of omnipresent natural degraders.
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5.2.2 Sorbed-Phase Contaminants of Concern and Spatial Distribution
Source area identification and an understanding of contaminant migration through the
subsurface and into the water-bearing zone are critical components of the CSM as sorbed-
phase or residual DNAPL and may result in persistent sources of dissolved-phase and vapor-
phase impacts.
The previous investigations conducted by Terracon and ECI did not report PCE and/or TCE
impacts in soil above applicable screening levels and no definitive source area was identified
for the release. Structural demolition and associated soil removal conducted by ECI (Section
1.2) was conducted for assessment purposes and not to address a specific known source
area. MIHPT data from the HRSC survey indicates that a mass of sorbed-phase chlorinated
solvent contamination exists in soil above the groundwater table at location M-15 (Exhibit
10). The western boundary of this sorbed-phase contamination was not fully delineated and
appears to extend underneath the existing building. The sorbed-phase contamination in soil
above the groundwater table at location M-15 is the most probable source area for the PCE
release identified to date.
Additional characterization is required to fully delineate the extents of the sorbed-phase
contamination and probable release area and to determine PCE and TCE concentrations in
soil at this location.
5.2.3 Dissolved-Phase Chemicals of Concern and Spatial Distribution
Five monitoring wells, MW-1 through MW-5, are currently present at the site (Exhibit 2).
All five monitoring wells have a total depth of 17 feet bgs and are screened from 7-17 feet
bgs. Historically, maximum dissolved-phase chlorinated solvent impacts were reported at
and in the vicinity of MW-3 (Exhibit 2), and concentrations have been observed to decrease
to the south.
However, HRSC survey results indicate that a much larger and deeper mass of dissolved-
phase chlorinated solvent contamination is present north of MW-3 (Exhibit 10 through
Exhibit 12), and that, based on the XSD response, chlorinated solvent concentrations in
this part of the plume are likely to be higher than the concentrations present in the MW-3
groundwater sample collected in January 2023 (Section 3.1;Exhibit 5 through Exhibit 7;
Table C1). The lateral extents of dissolved-phase chlorinated solvent contamination to the
west, north, and east appear to have been defined by the HRSC survey but need to be
confirmed with quantitative sampling, particularly at depths deeper than the previous
investigation sampling (Terracon 2017; ECI 2018) and deeper than the existing monitoring
wells (15 feet bgs and 17 feet bgs, respectively). The lateral extents of dissolved-phase
chlorinated solvent contamination south of the site have not been defined.
The on-site vertical extent of dissolved-phase chlorinated solvent impacts appears to have
been fully delineated by the HRSC survey, but needs to be confirmed with quantitative
sampling. As noted, PCE is a DNAPL with a density greater than water; therefore, DNAPL
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will sink below the water table until an aquitard is reached. While no definitive aquitard was
identified, fine-grained low-permeability Lake Bonneville sediments (Section 5.1) appear to
be acting as an aquitard and impeding the downward migration of DNAPL and/or dissolved-
phase contamination. The off-site vertical extent of dissolved-phase chlorinated solvent
impacts has not been defined.
Additional site characterization is required to assess dissolved-phase concentrations of
chlorinated solvents throughout the site at depths greater than 17 feet bgs, and off-site to
the south to at least 30 feet bgs.
5.2.4 Vapor-Phase Contaminants of Concern and Spatial Distribution
Soil gas sampling (Section 3.2; Exhibit 8 through Exhibit 9;Table C2) has confirmed that
chlorinated solvent impacts are present in soil gas at concentrations that exceed EPA
TSSNSGC VISLs. Further, PCE and TCE concentrations in soil gas at sample locations SV-5
and SV-7 indicate that a preferential pathway for migration of vapor-phase contamination
exists near the southern site boundary.
The lateral extents of soil gas contamination have not been defined and additional soil gas
sampling is required to fully delineate soil gas impacts north, south, east, and west of the
locations sampled during this investigation, which may include off-site locations. The soil
gas probes sampled during this investigation were left in place to allow for additional
sampling if warranted.
5.2.5 DNAPL Spatial Distribution
DNAPL has not been identified during assessment activities to date. However, the reported
dissolved-phase PCE concentrations suggest that DNAPL may be present or was previously
present in the subsurface. PCE has a solubility of 200,000 µg/L in groundwater at 25 degrees
centigrade (groundwater temperatures measured during January 2023 groundwater sampling
were no higher than 15 degrees centigrade) and DNAPL sources may be present at 1% of
solubility or 2,000 µg/L. PCE concentrations near the suspected source area have been
reported at a maximum concentration of 34,100 µg/L (boring B-3; Terracon 2017) and were
reported at 11,100 µg/L in September 2021 (MW-3; ECI 2022), both of which exceed the
1% PCE solubility threshold.
XSD responses recorded by the HRSC survey do not confirm the presence of DNAPL,
however, the deeper and larger mass identified during the survey is not yet associated with
empirical data. The additional site characterization that is required to assess dissolved-
phase concentrations of PCE and TCE (Section 5.3.3) at the locations and depth intervals
identified by the HRSC survey should provide the necessary data to determine if DNAPL is
present.
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5.3 Environmental Concerns Verification
Chlorinated solvent-impacted groundwater and soil gas have been identified at
concentrations that are either above applicable regulatory standards or at concentrations
that require additional investigation or action. Chlorinated-solvent impacted soil is suspected
based on the results of the HRSC survey. This section of the updated CSM will describe the
location where the concerns exist, identify points of exposure (POEs), evaluate exposure
pathways (EPs), and identify the remedial goals and targeted treatment areas to address
the identified concerns.
5.3.1 Chlorinated Solvent-Impacted Soil
HRSC survey data indicates that chlorinated solvent-impacted soil is present above the
groundwater table at and in the vicinity of MIHPT boring M-15 (Exhibit 10). The chlorinated
solvent-impacted soil present at location M-15 likely represents a source area for the
release and may be currently contributing to ongoing dissolved-phase chlorinated solvent
impacts in groundwater.
5.3.2 Chlorinated Solvent-Impacted Groundwater
PCE and/or TCE-impacted groundwater at or above MCLs and VISLs has been confirmed to
currently exist at the site (Section 3.1). Terracon conducted a search of Utah Department of
Environmental Quality (UDEQ) records for public water system facilities and did not identify
domestic or municipal groundwater supply wells within one mile downgradient of the site.
Additionally, Groundwater Permits or Water Rights Points of Diversion were not identified
within one-half mile downgradient of the site. The PCE-impacted groundwater does not appear
to present a threat to downgradient groundwater users.
The nearest surface water body is the Jordan River, located approximately one mile to the
west and downgradient of the site. Based on distance from the site, the PCE and/or TCE-
impacted groundwater does not appear to present a threat to the identified surface water
bodies.
5.3.3 Chlorinated Solvent-Impacted Soil Gas
PCE and TCE-impacted soil gas has been confirmed to currently exist at the site (Section
3.2). Limited soil gas impacts also exist for benzene and chloroform; however, relative to
PCE and TCE, the concentrations of these compounds pose minimal risk to current and
potential site receptors.
5.3.4 Remedial Goals
The University’s current remedial goal for the site is achievement of risk-based closure per
UAC R315-101. The feasibility of achieving this remedial goal is contingent upon further
evaluation of the release and the data gaps identified herein.
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5.3.5 Informational Data Gaps
Terracon’s evaluation of the historical site data, historical remedial activities performed to
date, and site data from the current investigation has identified multiple data gaps that
require further assessment to achieve both a risk-based closure and the University’s goals
for the site.
Identified informational data gaps include the following:
Source Area Delineation: Additional characterization is required to fully delineate
the extents of the probable source area for the release identified at and west of
HRSC survey boring M-15.
VOC Concentrations in Soil: Additional characterization is required to determine
chlorinated solvent concentrations in soil at and in the vicinity of HRSC survey
boring M-15.
VOC Concentrations in Groundwater: Additional characterization is required to
determine quantitative chlorinated solvent concentrations in groundwater at the
locations and depth intervals identified by the HRSC survey that have not been
evaluated by the current and/or previous investigations. This includes groundwater
throughout the site at depths greater than 17 feet bgs, and off-site to the south to
at least 30 feet bgs.
VOC Concentrations in Soil Gas: Additional site characterization is required to
fully delineate soil gas impacts north, south, east, and west of the locations sampled
during this investigation, which may include off-site locations. Re-sampling some of
the current soil gas sampling locations may be warranted to confirm the initial
results, particularly at sample locations SV-4, SV-5, and SV-7.
Risk Evaluation: After all the required data collection described above is complete,
a risk evaluation will need to be performed that identifies the POEs and EPs, and
calculates the risk levels (i.e., Total Cancer Risk and Total Hazard Quotient) present
at the site.
Addressing the above identified informational data gaps will work to further define the CSM
and the understanding of chlorinated solvent impacts in the subsurface and maximize the
value and efficiency of future remedial efforts.
6.0 CONCLUSION
Based on the most recent investigations, the nature and extent of VOC contamination in
soil, groundwater, and soil gas at the site has not been fully characterized and defined and
the chlorinated solvent occurrences exceed UAC R315-101 criteria for risk-based closure.
Additional sampling of soil, groundwater, and soil gas is required to fully characterize the
Site Characterization Report
SLC Station Center | Salt Lake City, Utah
April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials 24
nature and extent of chlorinated solvent impacts at the site, develop a remedial design, and
achieve the University’s goal of achieving a risk-based closure for the site.
7.0 REFERENCES
Environmental Contractors Incorporated (ECI) 2018. Phase I Pilot Test Work Plan, W.R.R.
Industries, Inc., 570 West 400 South, Salt Lake City, Utah, Salt Lake County, Utah, DWMRC
Facility Identification No UTCA-0023.October 8, 2018.
Environmental Contractors Incorporated (ECI) 2020. Corrective Action Summary Report,
W.R.R. Industries, Inc., 570 West 400 South, Salt Lake City, Utah, Salt Lake County, Utah,
DWMRC Facility Identification No UTCA-0023.October 1, 2020.
Environmental Contractors Incorporated (ECI) 2022. Phase II Corrective Action Summary
Report Version 5.0, W.R.R. Industries, Inc., 570 West 400 South, Salt Lake City, Utah, Salt
Lake County, Utah, DWMRC Facility Identification No UTCA-0023.April 14, 2022.
Terracon 2017. Limited Site Investigation, 217 Development LC, 570 West 400 South, Salt
Lake City, Salt Lake County, Utah.December 15, 2017.
Terracon 2018. Phase I Environmental Site Assessment, WRR Industries, 570 West 400
South, Salt Lake City, Salt Lake County, Utah.January 3, 2018.
Terracon 2021. Phase I Environmental Site Assessment, SLC Station Center, 550 and 570
West 400 South, Salt Lake City, Salt Lake County, Utah.June 24, 2021.
Terracon 2022a. Community-Wide Quality Assurance Project Plan, Salt Lake Brownfields
Coalition Assessments, EPA Cooperative Agreement No. 95811800, Salt Lake County, Utah.
February 8, 2022.
Terracon 2022b. Additional Site Characterization Work Plan, Proposed SLC Station Center,
550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah.July 21, 2022.
Terracon 2022c. Sampling and Analysis Plan, Former WRR Building (Proposed SLC Station
Center) 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah. EPA
Cooperative Agreement No. 95811800.September 9, 2022.
Utah Department of Environmental Quality, Division of Waste management and Radiation
Control (DWMRC) 2022.Division Comments on Groundwater Remediation Results.February
7.
Utah Geological Survey (UGS). 2009.Ground-Water Quality Classification For The Principle
Basin-Fill Aquifer, Salt Lake Valley, Salt Lake County, Utah.
Wong, I., Silva, W., Wright, D., Olig, S., Ashland, F., Gregor, N., Christenson, G.,
Pechmann, J., Thomas, P., Dober, M., and Gerth, R. 2002.Ground-shaking map for a
Site Characterization Report
SLC Station Center | Salt Lake City, Utah
April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials 25
magnitude 7.0 earthquake on the Wasatch fault, Salt Lake City, Utah, metropolitan area.
Utah Geological Survey Miscellaneous Publication MP 02-05, 50 p., Utah Geological Survey
Public Information Series 76.
Site Characterization Report
SLC Station Center | Salt Lake City, Utah
April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials
APPENDIX A
Exhibits
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Exhibit
terracon.com(801) 545-8500
6949 South High Tech Dr,
Midvale, UT 84047
Reviewed By:
Drawn By:
Jun 2022
Date:
61217496
Project No.:
SLC Station Center
550 and 570 West 400 South
Salt Lake City, Utah
Topographic Site Map
1
DMD
SJH
DATA SOURCES:
ESRI - Basemaps
0 4,000 8,0002,000
FeetSite Boundary
Project Mngr:
Approved By:
Ch ecked By:
Drawn By:
Project No.
Scale:
Date:
File No.
EXHIBIT
6949 South High Tech Dr Midvale, UT 84047
terracon.comPH. [phone]
erracon
Explore with us
R C v y L g R
March 2023
AS SHOWN
61217142DD
BPT
DD
ERG
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R C v y C
11
depth is feet below ground surface
Project Mngr:
Approved By:
Ch ecked By:
Drawn By:
Project No.
Scale:
Date:
File No.
EXHIBIT
6949 South High Tech Dr Midvale, UT 84047
terracon.comPH. [phone]
erracon
Explore with us
March 2023
AS SHOWN
61217142DD
BPT
DD
ERG
12
HRSC Survey - HPT Cross Section
Site Characterization Report
SLC Station Center | Salt Lake City, Utah
April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials 2
APPENDIX B
Tables
Table C1 - VOCs in Groundwater
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte CAS Method Units MCL VISL
Residential
VISL
Commercial UGWQS Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL
ACETONE 67-64-1 8260B mg/l NE 22500 94500 NE <0.0500 0.0113 0.05 <1.00 0.226 1 <0.0500 0.0113 0.05
ACROLEIN 107-02-8 8260B mg/l NE 0.00418 0.0176 NE <0.0500 0.00254 0.05 <1.00 0.0508 1 <0.0500 0.00254 0.05
ACRYLONITRILE 107-13-1 8260B mg/l NE 0.00732 0.032 NE <0.0100 0.000671 0.01 <0.200 0.0134 0.2 <0.0100 0.000671 0.01
BENZENE 71-43-2 8260B mg/l 0.005 0.00159 0.00693 0.005 0.000141 J 0.0000941 0.001 <0.0200 0.00188 0.02 0.000134 J 0.0000941 0.001
BROMOBENZENE 108-86-1 8260B mg/l NE 0.62 2.6 NE <0.00100 0.000118 0.001 <0.0200 0.00236 0.02 <0.00100 0.000118 0.001
BROMODICHLOROMETHANE 75-27-4 8260B mg/l 0.08 0.000876 0.00382 NE <0.00100 0.000136 0.001 <0.0200 0.00272 0.02 <0.00100 0.000136 0.001
BROMOFORM 75-25-2 8260B mg/l 0.08 0.117 0.51 NE <0.00100 0.000129 0.001 <0.0200 0.00258 0.02 <0.00100 0.000129 0.001
BROMOMETHANE 74-83-9 8260B mg/l NE 0.0174 0.073 NE <0.00500 0.000605 0.005 <0.100 0.0121 0.1 <0.00500 0.000605 0.005
N-BUTYLBENZENE 104-51-8 8260B mg/l NE NE NE NE <0.00100 0.000157 0.001 <0.0200 0.00314 0.02 <0.00100 0.000157 0.001
SEC-BUTYLBENZENE 135-98-8 8260B mg/l NE NE NE NE <0.00100 0.000125 0.001 <0.0200 0.0025 0.02 <0.00100 0.000125 0.001
TERT-BUTYLBENZENE 98-06-6 8260B mg/l NE NE NE NE <0.00100 0.000127 0.001 <0.0200 0.00254 0.02 <0.00100 0.000127 0.001
CARBON TETRACHLORIDE 56-23-5 8260B mg/l 0.005 0.000415 0.00181 0.005 <0.00100 0.000128 0.001 <0.0200 0.00256 0.02 <0.00100 0.000128 0.001
CHLOROBENZENE 108-90-7 8260B mg/l 0.1 0.41 1.72 0.1 <0.00100 0.000116 0.001 <0.0200 0.00232 0.02 <0.00100 0.000116 0.001
CHLORODIBROMOMETHANE 124-48-1 8260B mg/l 0.08 NE NE NE <0.00100 0.00014 0.001 <0.0200 0.0028 0.02 <0.00100 0.00014 0.001
CHLOROETHANE 75-00-3 8260B mg/l NE 23 96.5 NE <0.00500 0.000192 0.005 <0.100 0.00384 0.1 <0.00500 0.000192 0.005
2-CHLOROETHYL VINYL ETHER 111-75-8 8260B mg/l NE NE NE NE <0.0500 0.000575 0.05 <1.00 0.0115 1 <0.0500 0.000575 0.05
CHLOROFORM 67-66-3 8260B mg/l 0.08 0.000814 0.00355 NE <0.00500 0.000111 0.005 <0.100 0.00222 0.1 <0.00500 0.000111 0.005
CHLOROMETHANE 74-87-3 8260B mg/l NE 0.26 1.09 NE <0.00250 J4 0.00096 0.003 <0.0500 0.0192 0.05 <0.00250 J4 0.00096 0.0025
2-CHLOROTOLUENE 95-49-8 8260B mg/l NE NE NE NE <0.00100 0.000106 0.001 <0.0200 0.00212 0.02 <0.00100 0.000106 0.001
4-CHLOROTOLUENE 106-43-4 8260B mg/l NE NE NE NE <0.00100 0.000114 0.001 <0.0200 0.00228 0.02 <0.00100 0.000114 0.001
1,2-DIBROMO-3-CHLOROPROPANE 96-12-8 8260B mg/l 0.0002 0.0000281 0.00034 0.0002 <0.00500 0.000276 0.005 <0.100 0.00552 0.1 <0.00500 0.000276 0.005
1,2-DIBROMOETHANE 106-93-4 8260B mg/l 5E-05 0.000176 0.000769 0.00005 <0.00100 0.000126 0.001 <0.0200 0.00252 0.02 <0.00100 0.000126 0.001
DIBROMOMETHANE 74-95-3 8260B mg/l NE 0.124 0.521 NE <0.00100 0.000122 0.001 <0.0200 0.00244 0.02 <0.00100 0.000122 0.001
1,2-DICHLOROBENZENE 95-50-1 8260B mg/l 0.6 2.66 11.2 0.6 <0.00100 0.000107 0.001 <0.0200 0.00214 0.02 <0.00100 0.000107 0.001
1,3-DICHLOROBENZENE 541-73-1 8260B mg/l NE NE NE NE <0.00100 0.00011 0.001 <0.0200 0.0022 0.02 <0.00100 0.00011 0.001
1,4-DICHLOROBENZENE 106-46-7 8260B mg/l 0.075 0.00259 0.0113 0.075 <0.00100 0.00012 0.001 <0.0200 0.0024 0.02 <0.00100 0.00012 0.001
DICHLORODIFLUOROMETHANE 75-71-8 8260B mg/l NE 0.00744 0.0312 NE <0.00500 0.000374 0.005 <0.100 0.00748 0.1 <0.00500 0.000374 0.005
1,1-DICHLOROETHANE 75-34-3 8260B mg/l NE 0.00764 0.0334 NE <0.00100 0.0001 0.001 <0.0200 0.002 0.02 0.000238 J 0.0001 0.001
1,2-DICHLOROETHANE 107-06-2 8260B mg/l 0.005 0.00224 0.00978 0.005 <0.00100 0.0000819 0.001 <0.0200 0.00164 0.02 <0.00100 0.0000819 0.001
1,1-DICHLOROETHENE 75-35-4 8260B mg/l 0.007 0.195 0.821 0.007 0.000349 J 0.000188 0.001 <0.0200 0.00376 0.02 0.00265 0.000188 0.001
CIS-1,2-DICHLOROETHENE 156-59-2 8260B mg/l 0.07 NE NE 0.07 0.393 0.00252 0.02 1.42 0.00252 0.02 1.27 0.0063 0.05
TRANS-1,2-DICHLOROETHENE 156-60-5 8260B mg/l 0.1 0.109 0.457 0.1 0.00715 0.000149 0.001 0.0155 J 0.00298 0.02 0.0152 0.000149 0.001
1,2-DICHLOROPROPANE 78-87-5 8260B mg/l 0.005 0.00658 0.0287 0.005 <0.00100 0.000149 0.001 <0.0200 0.00298 0.02 <0.00100 0.000149 0.001
1,1-DICHLOROPROPENE 563-58-6 8260B mg/l NE NE NE NE <0.00100 0.000142 0.001 <0.0200 0.00284 0.02 <0.00100 0.000142 0.001
1,3-DICHLOROPROPANE 142-28-9 8260B mg/l NE NE NE NE <0.00100 0.00011 0.001 <0.0200 0.0022 0.02 <0.00100 0.00011 0.001
CIS-1,3-DICHLOROPROPENE 10061-01-5 8260B mg/l NE NE NE NE <0.00100 0.000111 0.001 <0.0200 0.00222 0.02 <0.00100 0.000111 0.001
TRANS-1,3-DICHLOROPROPENE 10061-02-6 8260B mg/l NE NE NE NE <0.00100 0.000118 0.001 <0.0200 0.00236 0.02 <0.00100 0.000118 0.001
2,2-DICHLOROPROPANE 594-20-7 8260B mg/l NE NE NE NE <0.00100 0.000161 0.001 <0.0200 0.00322 0.02 <0.00100 0.000161 0.001
DI-ISOPROPYL ETHER 108-20-3 8260B mg/l NE 6.97 29.3 NE <0.00100 0.000105 0.001 <0.0200 0.0021 0.02 <0.00100 0.000105 0.001
ETHYLBENZENE 100-41-4 8260B mg/l 0.7 0.00349 0.0152 0.7 <0.00100 0.000137 0.001 <0.0200 0.00274 0.02 <0.00100 0.000137 0.001
HEXACHLORO-1,3-BUTADIENE 87-68-3 8260B mg/l NE 0.000303 0.00132 NE <0.00100 0.000337 0.001 <0.0200 0.00674 0.02 <0.00100 0.000337 0.001
L1576151-01 L1577035-01 L1576151-02
MW-1 MW-2 MW-3
1/12/2023 1/17/2023 01/12/2023Date Collected
Lab Sample ID
Client Sample ID
Page 1 of 4
Table C1 - VOCs in Groundwater
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte CAS Method Units MCL VISL
Residential
VISL
Commercial UGWQS Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL
L1576151-01 L1577035-01 L1576151-02
MW-1 MW-2 MW-3
1/12/2023 1/17/2023 01/12/2023Date Collected
Lab Sample ID
Client Sample ID
ISOPROPYLBENZENE 98-82-8 8260B mg/l NE 0.887 3.73 NE <0.00100 0.000105 0.001 <0.0200 0.0021 0.02 <0.00100 0.000105 0.001
P-ISOPROPYLTOLUENE 99-87-6 8260B mg/l NE NE NE NE <0.00100 0.00012 0.001 <0.0200 0.0024 0.02 <0.00100 0.00012 0.001
2-BUTANONE (MEK)78-93-3 8260B mg/l NE 2240 9410 NE <0.0100 0.00119 0.01 <0.200 0.0238 0.2 <0.0100 0.00119 0.01
METHYLENE CHLORIDE 75-09-2 8260B mg/l 0.005 0.763 9.23 0.005 <0.00500 0.00043 0.005 <0.100 0.0086 0.1 <0.00500 0.00043 0.005
4-METHYL-2-PENTANONE (MIBK)108-10-1 8260B mg/l NE 555 2330 NE <0.0100 0.000478 0.01 <0.200 0.00956 0.2 <0.0100 0.000478 0.01
METHYL TERT-BUTYL ETHER 1634-04-4 8260B mg/l NE 0.45 1.97 NE <0.00100 0.000101 0.001 <0.0200 0.00202 0.02 <0.00100 0.000101 0.001
NAPHTHALENE 91-20-3 8260B mg/l NE 0.00459 0.0201 NE <0.00500 0.001 0.005 <0.100 0.02 0.1 <0.00500 0.001 0.005
N-PROPYLBENZENE 103-65-1 8260B mg/l NE 2.43 10.2 NE <0.00100 0.0000993 0.001 <0.0200 0.00199 0.02 <0.00100 0.0000993 0.001
STYRENE 100-42-5 8260B mg/l 0.1 9.28 39 0.1 <0.00100 0.000118 0.001 <0.0200 0.00236 0.02 <0.00100 0.000118 0.001
1,1,1,2-TETRACHLOROETHANE 630-20-6 8260B mg/l NE 0.00371 0.0162 NE <0.00100 0.000147 0.001 <0.0200 0.00294 0.02 <0.00100 0.000147 0.001
1,1,2,2-TETRACHLOROETHANE 79-34-5 8260B mg/l NE 0.00323 0.0141 NE <0.00100 0.000133 0.001 <0.0200 0.00266 0.02 <0.00100 0.000133 0.001
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 8260B mg/l NE 0.242 1.02 NE <0.00100 0.00018 0.001 <0.0200 0.0036 0.02 <0.00100 0.00018 0.001
TETRACHLOROETHENE 127-18-4 8260B mg/l 0.005 0.0149 0.0652 0.005 1.1 J4 0.006 0.02 0.0845 0.006 0.02 0.38 J4 0.015 0.05
TOLUENE 108-88-3 8260B mg/l 1 19.2 80.7 1 <0.00100 0.000278 0.001 <0.0200 0.00556 0.02 <0.00100 0.000278 0.001
1,2,3-TRICHLOROBENZENE 87-61-6 8260B mg/l NE NE NE NE <0.00100 0.00023 0.001 <0.0200 0.0046 0.02 <0.00100 0.00023 0.001
1,2,4-TRICHLOROBENZENE 120-82-1 8260B mg/l 0.07 0.0359 0.151 0.07 <0.00100 0.000481 0.001 <0.0200 0.00962 0.02 <0.00100 0.000481 0.001
1,1,1-TRICHLOROETHANE 71-55-6 8260B mg/l 0.2 7.42 31.1 0.2 <0.00100 0.000149 0.001 <0.0200 0.00298 0.02 <0.00100 0.000149 0.001
1,1,2-TRICHLOROETHANE 79-00-5 8260B mg/l 0.005 0.00521 22.8 0.005 <0.00100 0.000158 0.001 <0.0200 0.00316 0.02 <0.00100 0.000158 0.001
TRICHLOROETHENE 79-01-6 8260B mg/l 0.005 0.00119 0.00743 0.005 0.221 0.0038 0.02 0.0388 0.0038 0.02 1.82 0.0095 0.05
TRICHLOROFLUOROMETHANE 75-69-4 8260B mg/l NE NE NE NE <0.00500 0.00016 0.005 <0.100 0.0032 0.1 <0.00500 0.00016 0.005
1,2,3-TRICHLOROPROPANE 96-18-4 8260B mg/l NE 0.0223 0.0937 NE <0.00250 0.000237 0.003 <0.0500 0.00474 0.05 <0.00250 0.000237 0.0025
1,2,4-TRIMETHYLBENZENE 95-63-6 8260B mg/l NE 0.248 1.04 NE <0.00100 0.000322 0.001 <0.0200 0.00644 0.02 <0.00100 0.000322 0.001
1,2,3-TRIMETHYLBENZENE 526-73-8 8260B mg/l NE 0.351 1.47 NE <0.00100 0.000104 0.001 <0.0200 0.00208 0.02 <0.00100 0.000104 0.001
1,3,5-TRIMETHYLBENZENE 108-67-8 8260B mg/l NE 0.175 0.733 NE <0.00100 0.000104 0.001 <0.0200 0.00208 0.02 <0.00100 0.000104 0.001
VINYL CHLORIDE 75-01-4 8260B mg/l 0.002 0.000147 0.00245 0.002 0.00456 0.000234 0.001 0.0712 0.00468 0.02 0.00672 0.000234 0.001
XYLENES, TOTAL 1330-20-7 8260B mg/l 10 0.385 1.62 10 <0.00300 0.000174 0.003 <0.0600 0.00348 0.06 <0.00300 0.000174 0.003
J: The identification of the analyte is acceptable; the reported value is an estimate.
J4: The associated batch QC was above the established quality control range for accuracy.
Blue italicized non-detect results (e.g.,<0.0100 ) exceed one or more of the screening levels.
UGWQS:Utah Ground Water Quality Standards.
NE:Not Established.<:Less than Reported Detection Limit (RDL).mg/l:Milligrams per liter.
Bold value exceeds Method Detection Limit (MDL). Color shaded value exceeds screening level.
EPA VISL: Target Groundwater Concentration (TGC) Vapor Intrusion Screening Level (VISL); April 2022.
Qualifiers (Q):
EPA MCL: Environmental Protection Agency Maximum Contaminant Level for drinking water (May 2022).
Page 2 of 4
Table C1 - VOCs in Groundwater
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte CAS Method Units MCL VISL
Residential
VISL
Commercial UGWQS
ACETONE 67-64-1 8260B mg/l NE 22500 94500 NE
ACROLEIN 107-02-8 8260B mg/l NE 0.00418 0.0176 NE
ACRYLONITRILE 107-13-1 8260B mg/l NE 0.00732 0.032 NE
BENZENE 71-43-2 8260B mg/l 0.005 0.00159 0.00693 0.005
BROMOBENZENE 108-86-1 8260B mg/l NE 0.62 2.6 NE
BROMODICHLOROMETHANE 75-27-4 8260B mg/l 0.08 0.000876 0.00382 NE
BROMOFORM 75-25-2 8260B mg/l 0.08 0.117 0.51 NE
BROMOMETHANE 74-83-9 8260B mg/l NE 0.0174 0.073 NE
N-BUTYLBENZENE 104-51-8 8260B mg/l NE NE NE NE
SEC-BUTYLBENZENE 135-98-8 8260B mg/l NE NE NE NE
TERT-BUTYLBENZENE 98-06-6 8260B mg/l NE NE NE NE
CARBON TETRACHLORIDE 56-23-5 8260B mg/l 0.005 0.000415 0.00181 0.005
CHLOROBENZENE 108-90-7 8260B mg/l 0.1 0.41 1.72 0.1
CHLORODIBROMOMETHANE 124-48-1 8260B mg/l 0.08 NE NE NE
CHLOROETHANE 75-00-3 8260B mg/l NE 23 96.5 NE
2-CHLOROETHYL VINYL ETHER 111-75-8 8260B mg/l NE NE NE NE
CHLOROFORM 67-66-3 8260B mg/l 0.08 0.000814 0.00355 NE
CHLOROMETHANE 74-87-3 8260B mg/l NE 0.26 1.09 NE
2-CHLOROTOLUENE 95-49-8 8260B mg/l NE NE NE NE
4-CHLOROTOLUENE 106-43-4 8260B mg/l NE NE NE NE
1,2-DIBROMO-3-CHLOROPROPANE 96-12-8 8260B mg/l 0.0002 0.0000281 0.00034 0.0002
1,2-DIBROMOETHANE 106-93-4 8260B mg/l 5E-05 0.000176 0.000769 0.00005
DIBROMOMETHANE 74-95-3 8260B mg/l NE 0.124 0.521 NE
1,2-DICHLOROBENZENE 95-50-1 8260B mg/l 0.6 2.66 11.2 0.6
1,3-DICHLOROBENZENE 541-73-1 8260B mg/l NE NE NE NE
1,4-DICHLOROBENZENE 106-46-7 8260B mg/l 0.075 0.00259 0.0113 0.075
DICHLORODIFLUOROMETHANE 75-71-8 8260B mg/l NE 0.00744 0.0312 NE
1,1-DICHLOROETHANE 75-34-3 8260B mg/l NE 0.00764 0.0334 NE
1,2-DICHLOROETHANE 107-06-2 8260B mg/l 0.005 0.00224 0.00978 0.005
1,1-DICHLOROETHENE 75-35-4 8260B mg/l 0.007 0.195 0.821 0.007
CIS-1,2-DICHLOROETHENE 156-59-2 8260B mg/l 0.07 NE NE 0.07
TRANS-1,2-DICHLOROETHENE 156-60-5 8260B mg/l 0.1 0.109 0.457 0.1
1,2-DICHLOROPROPANE 78-87-5 8260B mg/l 0.005 0.00658 0.0287 0.005
1,1-DICHLOROPROPENE 563-58-6 8260B mg/l NE NE NE NE
1,3-DICHLOROPROPANE 142-28-9 8260B mg/l NE NE NE NE
CIS-1,3-DICHLOROPROPENE 10061-01-5 8260B mg/l NE NE NE NE
TRANS-1,3-DICHLOROPROPENE 10061-02-6 8260B mg/l NE NE NE NE
2,2-DICHLOROPROPANE 594-20-7 8260B mg/l NE NE NE NE
DI-ISOPROPYL ETHER 108-20-3 8260B mg/l NE 6.97 29.3 NE
ETHYLBENZENE 100-41-4 8260B mg/l 0.7 0.00349 0.0152 0.7
HEXACHLORO-1,3-BUTADIENE 87-68-3 8260B mg/l NE 0.000303 0.00132 NE
Date Collected
Lab Sample ID
Client Sample ID
Result Q MDL RDL Result Q MDL RDL
<0.0500 0.0113 0.05 <0.0500 0.0113 0.05
<0.0500 0.00254 0.05 <0.0500 0.00254 0.05
<0.0100 0.000671 0.01 <0.0100 0.000671 0.01
<0.00100 0.0000941 0.001 <0.00100 9.41E-05 0.001
<0.00100 0.000118 0.001 <0.00100 0.000118 0.001
<0.00100 0.000136 0.001 <0.00100 0.000136 0.001
<0.00100 0.000129 0.001 <0.00100 0.000129 0.001
<0.00500 0.000605 0.005 <0.00500 0.000605 0.005
<0.00100 0.000157 0.001 <0.00100 0.000157 0.001
<0.00100 0.000125 0.001 <0.00100 0.000125 0.001
<0.00100 0.000127 0.001 <0.00100 0.000127 0.001
<0.00100 0.000128 0.001 <0.00100 0.000128 0.001
<0.00100 0.000116 0.001 <0.00100 0.000116 0.001
<0.00100 0.00014 0.001 <0.00100 0.00014 0.001
<0.00500 0.000192 0.005 <0.00500 0.000192 0.005
<0.0500 0.000575 0.05 <0.0500 0.000575 0.05
<0.00500 0.000111 0.005 <0.00500 0.000111 0.005
<0.00250 J4 0.00096 0.003 <0.00250 J4 0.00096 0.0025
<0.00100 0.000106 0.001 <0.00100 0.000106 0.001
<0.00100 0.000114 0.001 <0.00100 0.000114 0.001
<0.00500 0.000276 0.005 <0.00500 0.000276 0.005
<0.00100 0.000126 0.001 <0.00100 0.000126 0.001
<0.00100 0.000122 0.001 <0.00100 0.000122 0.001
<0.00100 0.000107 0.001 <0.00100 0.000107 0.001
<0.00100 0.00011 0.001 <0.00100 0.00011 0.001
<0.00100 0.00012 0.001 <0.00100 0.00012 0.001
<0.00500 0.000374 0.005 <0.00500 0.000374 0.005
<0.00100 0.0001 0.001 <0.00100 0.0001 0.001
<0.00100 0.0000819 0.001 <0.00100 8.19E-05 0.001
<0.00100 0.000188 0.001 0.000299 J 0.000188 0.001
0.000308 J 0.000126 0.001 0.0412 0.000126 0.001
<0.00100 0.000149 0.001 0.00184 0.000149 0.001
<0.00100 0.000149 0.001 <0.00100 0.000149 0.001
<0.00100 0.000142 0.001 <0.00100 0.000142 0.001
<0.00100 0.00011 0.001 <0.00100 0.00011 0.001
<0.00100 0.000111 0.001 <0.00100 0.000111 0.001
<0.00100 0.000118 0.001 <0.00100 0.000118 0.001
<0.00100 0.000161 0.001 <0.00100 0.000161 0.001
<0.00100 0.000105 0.001 <0.00100 0.000105 0.001
<0.00100 0.000137 0.001 <0.00100 0.000137 0.001
<0.00100 0.000337 0.001 <0.00100 0.000337 0.001
L1576151-03 L1576151-04
MW-4 MW-5
01/12/2023 01/12/2023
Page 3 of 4
Table C1 - VOCs in Groundwater
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte CAS Method Units MCL VISL
Residential
VISL
Commercial UGWQS
NE 22500 94500 NE
Date Collected
Lab Sample ID
Client Sample ID
ISOPROPYLBENZENE 98-82-8 8260B mg/l NE 0.887 3.73 NE
P-ISOPROPYLTOLUENE 99-87-6 8260B mg/l NE NE NE NE
2-BUTANONE (MEK)78-93-3 8260B mg/l NE 2240 9410 NE
METHYLENE CHLORIDE 75-09-2 8260B mg/l 0.005 0.763 9.23 0.005
4-METHYL-2-PENTANONE (MIBK)108-10-1 8260B mg/l NE 555 2330 NE
METHYL TERT-BUTYL ETHER 1634-04-4 8260B mg/l NE 0.45 1.97 NE
NAPHTHALENE 91-20-3 8260B mg/l NE 0.00459 0.0201 NE
N-PROPYLBENZENE 103-65-1 8260B mg/l NE 2.43 10.2 NE
STYRENE 100-42-5 8260B mg/l 0.1 9.28 39 0.1
1,1,1,2-TETRACHLOROETHANE 630-20-6 8260B mg/l NE 0.00371 0.0162 NE
1,1,2,2-TETRACHLOROETHANE 79-34-5 8260B mg/l NE 0.00323 0.0141 NE
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 8260B mg/l NE 0.242 1.02 NE
TETRACHLOROETHENE 127-18-4 8260B mg/l 0.005 0.0149 0.0652 0.005
TOLUENE 108-88-3 8260B mg/l 1 19.2 80.7 1
1,2,3-TRICHLOROBENZENE 87-61-6 8260B mg/l NE NE NE NE
1,2,4-TRICHLOROBENZENE 120-82-1 8260B mg/l 0.07 0.0359 0.151 0.07
1,1,1-TRICHLOROETHANE 71-55-6 8260B mg/l 0.2 7.42 31.1 0.2
1,1,2-TRICHLOROETHANE 79-00-5 8260B mg/l 0.005 0.00521 22.8 0.005
TRICHLOROETHENE 79-01-6 8260B mg/l 0.005 0.00119 0.00743 0.005
TRICHLOROFLUOROMETHANE 75-69-4 8260B mg/l NE NE NE NE
1,2,3-TRICHLOROPROPANE 96-18-4 8260B mg/l NE 0.0223 0.0937 NE
1,2,4-TRIMETHYLBENZENE 95-63-6 8260B mg/l NE 0.248 1.04 NE
1,2,3-TRIMETHYLBENZENE 526-73-8 8260B mg/l NE 0.351 1.47 NE
1,3,5-TRIMETHYLBENZENE 108-67-8 8260B mg/l NE 0.175 0.733 NE
VINYL CHLORIDE 75-01-4 8260B mg/l 0.002 0.000147 0.00245 0.002
XYLENES, TOTAL 1330-20-7 8260B mg/l 10 0.385 1.62 10
J: The identification of the analyte is acceptable; the reported value is an estimate.
J4: The associated batch QC was above the established quality control range for accuracy.
Blue italicized non-detect results (e.g.,<0.0100 ) exceed one or more of the screening levels.
UGWQS:Utah Ground Water Quality Standards.
NE:Not Established.<:Less than Reported Detection Limit (RDL).mg/l:Milligrams per liter.
Bold value exceeds Method Detection Limit (MDL). Color shaded value exceeds screening level.
EPA VISL: Target Groundwater Concentration (TGC) Vapor Intrusion Screening Level (VISL); April 2022.
Qualifiers (Q):
EPA MCL: Environmental Protection Agency Maximum Contaminant Level for drinking water (May 2022).
Result Q MDL RDL Result Q MDL RDL
L1576151-03 L1576151-04
MW-4 MW-5
01/12/2023 01/12/2023
<0.00100 0.000105 0.001 <0.00100 0.000105 0.001
<0.00100 0.00012 0.001 <0.00100 0.00012 0.001
<0.0100 0.00119 0.01 <0.0100 0.00119 0.01
<0.00500 0.00043 0.005 <0.00500 0.00043 0.005
<0.0100 0.000478 0.01 <0.0100 0.000478 0.01
<0.00100 0.000101 0.001 <0.00100 0.000101 0.001
<0.00500 0.001 0.005 <0.00500 0.001 0.005
<0.00100 0.0000993 0.001 <0.00100 9.93E-05 0.001
<0.00100 0.000118 0.001 <0.00100 0.000118 0.001
<0.00100 0.000147 0.001 <0.00100 0.000147 0.001
<0.00100 0.000133 0.001 <0.00100 0.000133 0.001
<0.00100 0.00018 0.001 <0.00100 0.00018 0.001
0.00178 J4 0.0003 0.001 0.000659 J J4 0.0003 0.001
<0.00100 0.000278 0.001 <0.00100 0.000278 0.001
<0.00100 0.00023 0.001 <0.00100 0.00023 0.001
<0.00100 0.000481 0.001 <0.00100 0.000481 0.001
<0.00100 0.000149 0.001 <0.00100 0.000149 0.001
<0.00100 0.000158 0.001 <0.00100 0.000158 0.001
0.000473 J 0.00019 0.001 0.00141 0.00019 0.001
<0.00500 0.00016 0.005 <0.00500 0.00016 0.005
<0.00250 0.000237 0.003 <0.00250 0.000237 0.0025
<0.00100 0.000322 0.001 <0.00100 0.000322 0.001
<0.00100 0.000104 0.001 <0.00100 0.000104 0.001
<0.00100 0.000104 0.001 <0.00100 0.000104 0.001
0.00136 0.000234 0.001 0.00659 0.000234 0.001
<0.00300 0.000174 0.003 <0.00300 0.000174 0.003
Page 4 of 4
Table C2 - VOCs in Soil Gas
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte CAS Method Units VISL
Residential
VISL
Commercial Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL
ACETONE 67-64-1 TO-15 µg/m3 1070000 4510000 <2.97 1.39 2.97 <2.97 1.39 2.97 <29.7 13.9 29.7 37.5 1.39 2.97
ALLYL CHLORIDE 107-05-1 TO-15 µg/m3 15.6 68.1 <0.626 0.357 0.626 <0.626 0.357 0.626 <6.26 3.57 6.26 <0.626 0.357 0.626
BENZENE 71-43-2 TO-15 µg/m3 12 52.4 1.42 0.228 0.639 1.5 0.228 0.639 <0.639 0.228 0.639 <0.639 0.228 0.639
BENZYL CHLORIDE 100-44-7 TO-15 µg/m3 1.91 8.34 <1.04 0.311 1.04 <1.04 0.311 1.04 <1.04 0.311 1.04 <1.04 0.311 1.04
BROMODICHLOROMETHANE 75-27-4 TO-15 µg/m3 2.53 11 <1.34 0.471 1.34 <1.34 0.471 1.34 <1.34 0.471 1.34 <1.34 0.471 1.34
BROMOFORM 75-25-2 TO-15 µg/m3 85.1 372 <6.21 0.757 6.21 <6.21 0.757 6.21 <6.21 0.757 6.21 <6.21 0.757 6.21
BROMOMETHANE 74-83-9 TO-15 µg/m3 174 730 <0.776 0.381 0.776 <0.776 0.381 0.776 <7.76 3.81 7.76 <0.776 0.381 0.776
1,3-BUTADIENE 106-99-0 TO-15 µg/m3 3.12 13.6 <4.43 0.23 4.43 <4.43 0.23 4.43 <44.3 2.3 44.3 <4.43 0.23 4.43
CARBON DISULFIDE 75-15-0 TO-15 µg/m3 24300 102000 <0.622 0.317 0.622 <0.622 0.317 0.622 <6.22 3.17 6.22 1.33 0.317 0.622
CARBON TETRACHLORIDE 56-23-5 TO-15 µg/m3 15.6 68.1 37.9 0.461 1.26 <1.26 0.461 1.26 <12.6 4.61 12.6 <1.26 0.461 1.26
CHLOROBENZENE 108-90-7 TO-15 µg/m3 1740 7300 <0.924 0.385 0.924 <0.924 0.385 0.924 <0.924 0.385 0.924 <0.924 0.385 0.924
CHLOROETHANE 75-00-3 TO-15 µg/m3 348000 1460000 <0.528 0.263 0.528 <0.528 0.263 0.528 <5.28 2.63 5.28 <0.528 0.263 0.528
CHLOROFORM 67-66-3 TO-15 µg/m3 4.07 17.8 <0.973 0.349 0.973 <0.973 0.349 0.973 29.3 3.49 9.73 <0.973 0.349 0.973
CHLOROMETHANE 74-87-3 TO-15 µg/m3 3130 13100 <0.413 0.213 0.413 <0.413 0.213 0.413 <4.13 2.13 4.13 <0.413 0.213 0.413
2-CHLOROTOLUENE 95-49-8 TO-15 µg/m3 NE NE <1.03 0.427 1.03 <1.03 0.427 1.03 <1.03 0.427 1.03 <1.03 0.427 1.03
CYCLOHEXANE 110-82-7 TO-15 µg/m3 209000 876000 1.2 0.259 0.689 <0.689 0.259 0.689 <6.89 2.59 6.89 <0.689 0.259 0.689
CHLORODIBROMOMETHANE 124-48-1 TO-15 µg/m3 NE NE <1.70 0.618 1.7 <1.70 0.618 1.7 <1.70 0.618 1.7 <1.70 0.618 1.7
1,2-DIBROMOETHANE 106-93-4 TO-15 µg/m3 0.156 0.681 <1.54 0.554 1.54 <1.54 0.554 1.54 <1.54 0.554 1.54 <1.54 0.554 1.54
1,2-DICHLOROBENZENE 95-50-1 TO-15 µg/m3 6950 29200 <1.20 0.77 1.2 <1.20 0.77 1.2 <1.20 0.77 1.2 <1.20 0.77 1.2
1,3-DICHLOROBENZENE 541-73-1 TO-15 µg/m3 NE NE 136 1.09 1.2 <1.20 1.09 1.2 <1.20 1.09 1.2 3.16 1.09 1.2
1,4-DICHLOROBENZENE 106-46-7 TO-15 µg/m3 8.51 37.2 <1.20 0.335 1.2 <1.20 0.335 1.2 <1.20 0.335 1.2 <1.20 0.335 1.2
1,2-DICHLOROETHANE 107-06-2 TO-15 µg/m3 3.6 15.7 <0.810 0.283 0.81 <0.810 0.283 0.81 <0.810 0.283 0.81 <0.810 0.283 0.81
1,1-DICHLOROETHANE 75-34-3 TO-15 µg/m3 58.5 256 <0.802 0.29 0.802 <0.802 0.29 0.802 <8.02 2.9 8.02 <0.802 0.29 0.802
1,1-DICHLOROETHENE 75-35-4 TO-15 µg/m3 6950 29200 53.5 0.302 0.793 <0.793 0.302 0.793 <7.93 3.02 7.93 <0.793 0.302 0.793
CIS-1,2-DICHLOROETHENE 156-59-2 TO-15 µg/m3 NE NE <0.793 0.311 0.793 <0.793 0.311 0.793 404 3.11 7.93 <0.793 0.311 0.793
TRANS-1,2-DICHLOROETHENE 156-60-5 TO-15 µg/m3 NE NE 9.35 0.267 0.793 <0.793 0.267 0.793 <7.93 2.67 7.93 <0.793 0.267 0.793
1,2-DICHLOROPROPANE 78-87-5 TO-15 µg/m3 25.3 110 <0.924 0.351 0.924 <0.924 0.351 0.924 <0.924 0.351 0.924 27.5 0.351 0.924
CIS-1,3-DICHLOROPROPENE 10061-01-5 TO-15 µg/m3 NE NE <0.908 0.313 0.908 <0.908 0.313 0.908 <0.908 0.313 0.908 <0.908 0.313 0.908
TRANS-1,3-DICHLOROPROPENE 10061-02-6 TO-15 µg/m3 NE NE <0.908 0.331 0.908 <0.908 0.331 0.908 <0.908 0.331 0.908 <0.908 0.331 0.908
1,4-DIOXANE 123-91-1 TO-15 µg/m3 18.7 81.8 <0.721 0.3 0.721 <0.721 0.3 0.721 <0.721 0.3 0.721 <0.721 0.3 0.721
ETHANOL 64-17-5 TO-15 µg/m3 NE NE 19.2 0.5 2.36 24.9 0.5 2.36 26 5 23.6 30.5 0.5 2.36
ETHYLBENZENE 100-41-4 TO-15 µg/m3 37.4 164 1.51 0.362 0.867 3.8 0.362 0.867 1.71 0.362 0.867 <0.867 0.362 0.867
4-ETHYLTOLUENE 622-96-8 TO-15 µg/m3 NE NE <0.982 0.384 0.982 <0.982 0.384 0.982 <0.982 0.384 0.982 <0.982 0.384 0.982
TRICHLOROFLUOROMETHANE 75-69-4 TO-15 µg/m3 NE NE 1.85 0.46 1.12 6.69 0.46 1.12 <11.2 4.6 11.2 15.8 0.46 1.12
L1577012-04
Client Sample ID SV-1 SV-2 SV-3 SV-4
Lab Sample ID L1577012-01 L1577012-02 L1577012-03
01/16/2023Date Collected 01/16/2023 01/16/2023 01/16/2023
Page 1 of 6
Table C2 - VOCs in Soil Gas
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte CAS Method Units VISL
Residential
VISL
Commercial Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL
L1577012-04
Client Sample ID SV-1 SV-2 SV-3 SV-4
Lab Sample ID L1577012-01 L1577012-02 L1577012-03
01/16/2023Date Collected 01/16/2023 01/16/2023 01/16/2023
DICHLORODIFLUOROMETHANE 75-71-8 TO-15 µg/m3 3480 14600 <0.989 0.678 0.989 <0.989 0.678 0.989 <9.89 6.78 9.89 <0.989 0.678 0.989
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 TO-15 µg/m3 174000 730000 <1.53 0.608 1.53 <1.53 0.608 1.53 <15.3 6.08 15.3 1.9 0.608 1.53
1,2-DICHLOROTETRAFLUOROETHANE 76-14-2 TO-15 µg/m3 NE NE <1.40 0.622 1.4 <1.40 0.622 1.4 <14.0 6.22 14 <1.40 0.622 1.4
HEPTANE 142-82-5 TO-15 µg/m3 13900 58400 1.42 0.425 0.818 1.18 0.425 0.818 <0.818 0.425 0.818 <0.818 0.425 0.818
HEXACHLORO-1,3-BUTADIENE 87-68-3 TO-15 µg/m3 4.25 18.6 <6.73 1.12 6.73 <6.73 1.12 6.73 <6.73 1.12 6.73 <6.73 1.12 6.73
N-HEXANE 110-54-3 TO-15 µg/m3 24300 102000 2.22 0.726 2.22 <2.22 0.726 2.22 <22.2 7.26 22.2 <2.22 0.726 2.22
ISOPROPYLBENZENE 98-82-8 TO-15 µg/m3 13900 58400 <0.983 0.382 0.983 <0.983 0.382 0.983 <0.983 0.382 0.983 <0.983 0.382 0.983
METHYLENE CHLORIDE 75-09-2 TO-15 µg/m3 3380 40900 <0.694 0.34 0.694 <0.694 0.34 0.694 <6.94 3.4 6.94 <0.694 0.34 0.694
METHYL BUTYL KETONE 591-78-6 TO-15 µg/m3 1040 4380 <5.11 0.544 5.11 <5.11 0.544 5.11 <5.11 0.544 5.11 <5.11 0.544 5.11
2-BUTANONE (MEK)78-93-3 TO-15 µg/m3 174000 730000 <3.69 0.24 3.69 <3.69 0.24 3.69 <36.9 2.4 36.9 <3.69 0.24 3.69
4-METHYL-2-PENTANONE (MIBK)108-10-1 TO-15 µg/m3 104000 438000 <5.12 0.313 5.12 <5.12 0.313 5.12 <5.12 0.313 5.12 <5.12 0.313 5.12
METHYL METHACRYLATE 80-62-6 TO-15 µg/m3 24300 102000 <0.819 0.359 0.819 <0.819 0.359 0.819 <0.819 0.359 0.819 3.15 0.359 0.819
METHYL TERT-BUTYL ETHER 1634-04-4 TO-15 µg/m3 360 1570 2.7 0.233 0.721 <0.721 0.233 0.721 <7.21 2.33 7.21 <0.721 0.233 0.721
NAPHTHALENE 91-20-3 TO-15 µg/m3 2.75 12 <3.30 1.83 3.3 <3.30 1.83 3.3 <3.30 1.83 3.3 <3.30 1.83 3.3
2-PROPANOL 67-63-0 TO-15 µg/m3 6950 29200 R E 13 61.5 <3.07 0.649 3.07 <30.7 6.49 30.7 12.7 0.649 3.07
PROPENE 115-07-1 TO-15 µg/m3 104000 438000 <2.15 0.16 2.15 <2.15 0.16 2.15 <21.5 1.6 21.5 <2.15 0.16 2.15
STYRENE 100-42-5 TO-15 µg/m3 34800 146000 <0.851 0.335 0.851 <0.851 0.335 0.851 <0.851 0.335 0.851 <0.851 0.335 0.851
1,1,2,2-TETRACHLOROETHANE 79-34-5 TO-15 µg/m3 1.61 7.05 <1.37 0.511 1.37 <1.37 0.511 1.37 <1.37 0.511 1.37 <1.37 0.511 1.37
TETRACHLOROETHENE 127-18-4 TO-15 µg/m3 360 1570 978 11.1 27.2 678 0.553 1.36 492 0.553 1.36 39.6 0.553 1.36
TETRAHYDROFURAN 109-99-9 TO-15 µg/m3 69500 292000 1.5 0.216 0.59 <0.590 0.216 0.59 <5.90 2.16 5.9 <0.590 0.216 0.59
TOLUENE 108-88-3 TO-15 µg/m3 174000 730000 9.57 0.328 1.88 6.33 0.328 1.88 17.8 0.328 1.88 <1.88 0.328 1.88
1,2,4-TRICHLOROBENZENE 120-82-1 TO-15 µg/m3 69.5 292 <4.66 1.1 4.66 <4.66 1.1 4.66 <4.66 1.1 4.66 <4.66 1.1 4.66
1,1,1-TRICHLOROETHANE 71-55-6 TO-15 µg/m3 174000 730000 <1.09 0.4 1.09 <1.09 0.4 1.09 <10.9 4 10.9 1.41 0.4 1.09
1,1,2-TRICHLOROETHANE 79-00-5 TO-15 µg/m3 5.85 25.6 <1.09 0.422 1.09 <1.09 0.422 1.09 <1.09 0.422 1.09 <1.09 0.422 1.09
TRICHLOROETHENE 79-01-6 TO-15 µg/m3 15.9 99.7 120 0.364 1.07 94.8 0.364 1.07 2380 3.64 10.7 185 0.364 1.07
1,2,4-TRIMETHYLBENZENE 95-63-6 TO-15 µg/m3 2090 8760 1.55 0.375 0.982 1.45 0.375 0.982 <0.982 0.375 0.982 <0.982 0.375 0.982
1,3,5-TRIMETHYLBENZENE 108-67-8 TO-15 µg/m3 2090 8760 <0.982 0.382 0.982 <0.982 0.382 0.982 <0.982 0.382 0.982 <0.982 0.382 0.982
2,2,4-TRIMETHYLPENTANE 540-84-1 TO-15 µg/m3 NE NE 1.92 0.621 0.934 <0.934 0.621 0.934 <9.34 6.21 9.34 <0.934 0.621 0.934
VINYL CHLORIDE 75-01-4 TO-15 µg/m3 5.59 92.9 <0.511 0.243 0.511 <0.511 0.243 0.511 <5.11 2.43 5.11 <0.511 0.243 0.511
VINYL BROMIDE 593-60-2 TO-15 µg/m3 2.92 12.8 <0.875 0.373 0.875 <0.875 0.373 0.875 <8.75 3.73 8.75 <0.875 0.373 0.875
VINYL ACETATE 108-05-4 TO-15 µg/m3 6950 29200 9.01 0.408 0.704 <0.704 0.408 0.704 <7.04 4.08 7.04 <0.704 0.408 0.704
XYLENES, TOTAL 1330-20-7 TO-15 µg/m3 3480 14600 10.9 0.586 2.61 21.2 0.586 2.61 7.21 0.586 2.61 <2.61 0.586 2.61
M&P-XYLENE 1330-20-7 TO-15 µg/m3 3480 14600 8.15 0.585 1.73 14.2 0.585 1.73 5.77 0.585 1.73 <1.73 0.585 1.73
O-XYLENE 95-47-6 TO-15 µg/m3 3480 14600 2.71 0.359 0.867 6.98 0.359 0.867 1.42 0.359 0.867 <0.867 0.359 0.867
Blue italicized non-detect results (e.g.,<0.0100 ) exceed one or more of the screening levels.
E: The analyte concentration exceeds the upper limit of the calibration range of the instrument established
by the initial calibration (ICAL).
Bold value exceeds Method Detection Limit (MDL). Color shaded value exceeds screening level.
Qualifiers (Q):
EPA VISL: Environmental Protection Agency Target Sub-Slab and Near-source Soil Gas Concentration
NA: Not Applicable.NE:Not Established.<:Less than Reported Detection Limit (RDL).µg/m3:
micrograms per cubinc meter.R: Result was rejected from the dataset on QA/QC grounds.
Page 2 of 6
Table C2 - VOCs in Soil Gas
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte CAS Method Units VISL
Residential
VISL
Commercial
ACETONE 67-64-1 TO-15 µg/m3 1070000 4510000
ALLYL CHLORIDE 107-05-1 TO-15 µg/m3 15.6 68.1
BENZENE 71-43-2 TO-15 µg/m3 12 52.4
BENZYL CHLORIDE 100-44-7 TO-15 µg/m3 1.91 8.34
BROMODICHLOROMETHANE 75-27-4 TO-15 µg/m3 2.53 11
BROMOFORM 75-25-2 TO-15 µg/m3 85.1 372
BROMOMETHANE 74-83-9 TO-15 µg/m3 174 730
1,3-BUTADIENE 106-99-0 TO-15 µg/m3 3.12 13.6
CARBON DISULFIDE 75-15-0 TO-15 µg/m3 24300 102000
CARBON TETRACHLORIDE 56-23-5 TO-15 µg/m3 15.6 68.1
CHLOROBENZENE 108-90-7 TO-15 µg/m3 1740 7300
CHLOROETHANE 75-00-3 TO-15 µg/m3 348000 1460000
CHLOROFORM 67-66-3 TO-15 µg/m3 4.07 17.8
CHLOROMETHANE 74-87-3 TO-15 µg/m3 3130 13100
2-CHLOROTOLUENE 95-49-8 TO-15 µg/m3 NE NE
CYCLOHEXANE 110-82-7 TO-15 µg/m3 209000 876000
CHLORODIBROMOMETHANE 124-48-1 TO-15 µg/m3 NE NE
1,2-DIBROMOETHANE 106-93-4 TO-15 µg/m3 0.156 0.681
1,2-DICHLOROBENZENE 95-50-1 TO-15 µg/m3 6950 29200
1,3-DICHLOROBENZENE 541-73-1 TO-15 µg/m3 NE NE
1,4-DICHLOROBENZENE 106-46-7 TO-15 µg/m3 8.51 37.2
1,2-DICHLOROETHANE 107-06-2 TO-15 µg/m3 3.6 15.7
1,1-DICHLOROETHANE 75-34-3 TO-15 µg/m3 58.5 256
1,1-DICHLOROETHENE 75-35-4 TO-15 µg/m3 6950 29200
CIS-1,2-DICHLOROETHENE 156-59-2 TO-15 µg/m3 NE NE
TRANS-1,2-DICHLOROETHENE 156-60-5 TO-15 µg/m3 NE NE
1,2-DICHLOROPROPANE 78-87-5 TO-15 µg/m3 25.3 110
CIS-1,3-DICHLOROPROPENE 10061-01-5 TO-15 µg/m3 NE NE
TRANS-1,3-DICHLOROPROPENE 10061-02-6 TO-15 µg/m3 NE NE
1,4-DIOXANE 123-91-1 TO-15 µg/m3 18.7 81.8
ETHANOL 64-17-5 TO-15 µg/m3 NE NE
ETHYLBENZENE 100-41-4 TO-15 µg/m3 37.4 164
4-ETHYLTOLUENE 622-96-8 TO-15 µg/m3 NE NE
TRICHLOROFLUOROMETHANE 75-69-4 TO-15 µg/m3 NE NE
Client Sample ID
Lab Sample ID
Date Collected
Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL
59.6 1.39 2.97 49 1.39 2.97 45.6 1.39 2.97 <2.97 1.39 2.97
<0.626 0.357 0.626 <0.626 0.357 0.626 <0.626 0.357 0.626 <0.626 0.357 0.626
8.56 0.228 0.639 4.38 0.228 0.639 5.46 0.228 0.639 2.54 0.228 0.639
<1.04 0.311 1.04 <1.04 0.311 1.04 <1.04 0.311 1.04 <1.04 0.311 1.04
<1.34 0.471 1.34 <1.34 0.471 1.34 <1.34 0.471 1.34 3.76 0.471 1.34
<6.21 0.757 6.21 <6.21 0.757 6.21 <6.21 0.757 6.21 <6.21 0.757 6.21
<0.776 0.381 0.776 <0.776 0.381 0.776 <0.776 0.381 0.776 <0.776 0.381 0.776
<4.43 0.23 4.43 <4.43 0.23 4.43 <4.43 0.23 4.43 <4.43 0.23 4.43
7.81 0.317 0.622 3.14 0.317 0.622 5.57 0.317 0.622 <0.622 0.317 0.622
<1.26 0.461 1.26 <1.26 0.461 1.26 <1.26 0.461 1.26 <1.26 0.461 1.26
<0.924 0.385 0.924 <0.924 0.385 0.924 <0.924 0.385 0.924 <0.924 0.385 0.924
<0.528 0.263 0.528 <0.528 0.263 0.528 <0.528 0.263 0.528 <0.528 0.263 0.528
1.25 0.349 0.973 2.85 0.349 0.973 5.21 0.349 0.973 27.4 0.349 0.973
<0.413 0.213 0.413 <0.413 0.213 0.413 <0.413 0.213 0.413 <0.413 0.213 0.413
<1.03 0.427 1.03 <1.03 0.427 1.03 <1.03 0.427 1.03 <1.03 0.427 1.03
<0.689 0.259 0.689 <0.689 0.259 0.689 <0.689 0.259 0.689 <0.689 0.259 0.689
<1.70 0.618 1.7 <1.70 0.618 1.7 <1.70 0.618 1.7 <1.70 0.618 1.7
<1.54 0.554 1.54 <1.54 0.554 1.54 <1.54 0.554 1.54 <1.54 0.554 1.54
<1.20 0.77 1.2 <1.20 0.77 1.2 <1.20 0.77 1.2 <1.20 0.77 1.2
<1.20 1.09 1.2 <1.20 1.09 1.2 <1.20 1.09 1.2 <1.20 1.09 1.2
<1.20 0.335 1.2 <1.20 0.335 1.2 <1.20 0.335 1.2 <1.20 0.335 1.2
<0.810 0.283 0.81 <0.810 0.283 0.81 <0.810 0.283 0.81 <0.810 0.283 0.81
<0.802 0.29 0.802 <0.802 0.29 0.802 <0.802 0.29 0.802 <0.802 0.29 0.802
<0.793 0.302 0.793 <0.793 0.302 0.793 <0.793 0.302 0.793 <0.793 0.302 0.793
0.84 0.311 0.793 <0.793 0.311 0.793 <0.793 0.311 0.793 2.65 0.311 0.793
2.45 0.267 0.793 <0.793 0.267 0.793 <0.793 0.267 0.793 0.971 0.267 0.793
<0.924 0.351 0.924 <0.924 0.351 0.924 <0.924 0.351 0.924 <0.924 0.351 0.924
<0.908 0.313 0.908 <0.908 0.313 0.908 <0.908 0.313 0.908 <0.908 0.313 0.908
<0.908 0.331 0.908 <0.908 0.331 0.908 <0.908 0.331 0.908 <0.908 0.331 0.908
<0.721 0.3 0.721 <0.721 0.3 0.721 <0.721 0.3 0.721 <0.721 0.3 0.721
5.45 0.5 2.36 4.92 0.5 2.36 25.5 0.5 2.36 4.22 0.5 2.36
22.5 0.362 0.867 6.59 0.362 0.867 7.8 0.362 0.867 2.21 0.362 0.867
1.35 0.384 0.982 3.61 0.384 0.982 2.89 0.384 0.982 <0.982 0.384 0.982
1.22 0.46 1.12 1.16 0.46 1.12 <1.12 0.46 1.12 31.5 0.46 1.12
SV-5 SV-6 SV-7 SV-8
L1577012-05 L1577012-06 L1577012-07 L1577012-08
01/16/2023 01/16/2023 01/16/2023 01/16/2023
Page 3 of 6
Table C2 - VOCs in Soil Gas
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte CAS Method Units VISL
Residential
VISL
Commercial
3 1070000 4510000
Client Sample ID
Lab Sample ID
Date Collected
DICHLORODIFLUOROMETHANE 75-71-8 TO-15 µg/m3 3480 14600
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 TO-15 µg/m3 174000 730000
1,2-DICHLOROTETRAFLUOROETHANE 76-14-2 TO-15 µg/m3 NE NE
HEPTANE 142-82-5 TO-15 µg/m3 13900 58400
HEXACHLORO-1,3-BUTADIENE 87-68-3 TO-15 µg/m3 4.25 18.6
N-HEXANE 110-54-3 TO-15 µg/m3 24300 102000
ISOPROPYLBENZENE 98-82-8 TO-15 µg/m3 13900 58400
METHYLENE CHLORIDE 75-09-2 TO-15 µg/m3 3380 40900
METHYL BUTYL KETONE 591-78-6 TO-15 µg/m3 1040 4380
2-BUTANONE (MEK)78-93-3 TO-15 µg/m3 174000 730000
4-METHYL-2-PENTANONE (MIBK)108-10-1 TO-15 µg/m3 104000 438000
METHYL METHACRYLATE 80-62-6 TO-15 µg/m3 24300 102000
METHYL TERT-BUTYL ETHER 1634-04-4 TO-15 µg/m3 360 1570
NAPHTHALENE 91-20-3 TO-15 µg/m3 2.75 12
2-PROPANOL 67-63-0 TO-15 µg/m3 6950 29200
PROPENE 115-07-1 TO-15 µg/m3 104000 438000
STYRENE 100-42-5 TO-15 µg/m3 34800 146000
1,1,2,2-TETRACHLOROETHANE 79-34-5 TO-15 µg/m3 1.61 7.05
TETRACHLOROETHENE 127-18-4 TO-15 µg/m3 360 1570
TETRAHYDROFURAN 109-99-9 TO-15 µg/m3 69500 292000
TOLUENE 108-88-3 TO-15 µg/m3 174000 730000
1,2,4-TRICHLOROBENZENE 120-82-1 TO-15 µg/m3 69.5 292
1,1,1-TRICHLOROETHANE 71-55-6 TO-15 µg/m3 174000 730000
1,1,2-TRICHLOROETHANE 79-00-5 TO-15 µg/m3 5.85 25.6
TRICHLOROETHENE 79-01-6 TO-15 µg/m3 15.9 99.7
1,2,4-TRIMETHYLBENZENE 95-63-6 TO-15 µg/m3 2090 8760
1,3,5-TRIMETHYLBENZENE 108-67-8 TO-15 µg/m3 2090 8760
2,2,4-TRIMETHYLPENTANE 540-84-1 TO-15 µg/m3 NE NE
VINYL CHLORIDE 75-01-4 TO-15 µg/m3 5.59 92.9
VINYL BROMIDE 593-60-2 TO-15 µg/m3 2.92 12.8
VINYL ACETATE 108-05-4 TO-15 µg/m3 6950 29200
XYLENES, TOTAL 1330-20-7 TO-15 µg/m3 3480 14600
M&P-XYLENE 1330-20-7 TO-15 µg/m3 3480 14600
O-XYLENE 95-47-6 TO-15 µg/m3 3480 14600
Blue italicized non-detect results (e.g.,<0.0100 ) exceed one or more of the screening levels.
E: The analyte concentration exceeds the upper limit of the calibration range of the instrument established
by the initial calibration (ICAL).
Bold value exceeds Method Detection Limit (MDL). Color shaded value exceeds screening level.
Qualifiers (Q):
EPA VISL: Environmental Protection Agency Target Sub-Slab and Near-source Soil Gas Concentration
NA: Not Applicable.NE:Not Established.<:Less than Reported Detection Limit (RDL).µg/m3:
micrograms per cubinc meter.R: Result was rejected from the dataset on QA/QC grounds.
Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL
SV-5 SV-6 SV-7 SV-8
L1577012-05 L1577012-06 L1577012-07 L1577012-08
01/16/2023 01/16/2023 01/16/2023 01/16/2023
2.39 0.678 0.989 2.33 0.678 0.989 2.15 0.678 0.989 2.05 0.678 0.989
<1.53 0.608 1.53 <1.53 0.608 1.53 <1.53 0.608 1.53 <1.53 0.608 1.53
<1.40 0.622 1.4 <1.40 0.622 1.4 <1.40 0.622 1.4 <1.40 0.622 1.4
4.99 0.425 0.818 2.86 0.425 0.818 3.62 0.425 0.818 1.13 0.425 0.818
<6.73 1.12 6.73 <6.73 1.12 6.73 <6.73 1.12 6.73 <6.73 1.12 6.73
<2.22 0.726 2.22 <2.22 0.726 2.22 <2.22 0.726 2.22 <2.22 0.726 2.22
1.04 0.382 0.983 <0.983 0.382 0.983 <0.983 0.382 0.983 <0.983 0.382 0.983
<0.694 0.34 0.694 <0.694 0.34 0.694 <0.694 0.34 0.694 <0.694 0.34 0.694
<5.11 0.544 5.11 <5.11 0.544 5.11 <5.11 0.544 5.11 <5.11 0.544 5.11
14.3 0.24 3.69 6.75 0.24 3.69 9.94 0.24 3.69 <3.69 0.24 3.69
<5.12 0.313 5.12 <5.12 0.313 5.12 <5.12 0.313 5.12 <5.12 0.313 5.12
<0.819 0.359 0.819 <0.819 0.359 0.819 <0.819 0.359 0.819 <0.819 0.359 0.819
<0.721 0.233 0.721 <0.721 0.233 0.721 <0.721 0.233 0.721 <0.721 0.233 0.721
<3.30 1.83 3.3 <3.30 1.83 3.3 <3.30 1.83 3.3 <3.30 1.83 3.3
<3.07 0.649 3.07 <3.07 0.649 3.07 17.9 0.649 3.07 <3.07 0.649 3.07
<2.15 0.16 2.15 <2.15 0.16 2.15 <2.15 0.16 2.15 <2.15 0.16 2.15
<0.851 0.335 0.851 <0.851 0.335 0.851 <0.851 0.335 0.851 <0.851 0.335 0.851
<1.37 0.511 1.37 <1.37 0.511 1.37 <1.37 0.511 1.37 <1.37 0.511 1.37
4190 55.3 136 342 0.553 1.36 2200 5.53 13.6 551 0.553 1.36
<0.590 0.216 0.59 2.42 0.216 0.59 2.4 0.216 0.59 <0.590 0.216 0.59
15.6 0.328 1.88 12.6 0.328 1.88 16 0.328 1.88 6.37 0.328 1.88
<4.66 1.1 4.66 <4.66 1.1 4.66 <4.66 1.1 4.66 <4.66 1.1 4.66
1.12 0.4 1.09 <1.09 0.4 1.09 <1.09 0.4 1.09 <1.09 0.4 1.09
<1.09 0.422 1.09 <1.09 0.422 1.09 <1.09 0.422 1.09 <1.09 0.422 1.09
777 3.64 10.7 18.2 0.364 1.07 296 0.364 1.07 1970 3.64 10.7
6.09 0.375 0.982 21.1 0.375 0.982 15.6 0.375 0.982 2.78 0.375 0.982
3.77 0.382 0.982 11.8 0.382 0.982 8.93 0.382 0.982 1.43 0.382 0.982
1.85 0.621 0.934 1.1 0.621 0.934 <0.934 0.621 0.934 1.68 0.621 0.934
<0.511 0.243 0.511 <0.511 0.243 0.511 <0.511 0.243 0.511 <0.511 0.243 0.511
<0.875 0.373 0.875 <0.875 0.373 0.875 <0.875 0.373 0.875 <0.875 0.373 0.875
<0.704 0.408 0.704 <0.704 0.408 0.704 <0.704 0.408 0.704 <0.704 0.408 0.704
120 0.586 2.61 40.1 0.586 2.61 47.3 0.586 2.61 12.2 0.586 2.61
91.5 0.585 1.73 30.7 0.585 1.73 36.7 0.585 1.73 9.19 0.585 1.73
28 0.359 0.867 9.28 0.359 0.867 10.7 0.359 0.867 2.97 0.359 0.867
Page 4 of 6
Table C2 - VOCs in Soil Gas
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte CAS Method Units VISL
Residential
VISL
Commercial
ACETONE 67-64-1 TO-15 µg/m3 1070000 4510000
ALLYL CHLORIDE 107-05-1 TO-15 µg/m3 15.6 68.1
BENZENE 71-43-2 TO-15 µg/m3 12 52.4
BENZYL CHLORIDE 100-44-7 TO-15 µg/m3 1.91 8.34
BROMODICHLOROMETHANE 75-27-4 TO-15 µg/m3 2.53 11
BROMOFORM 75-25-2 TO-15 µg/m3 85.1 372
BROMOMETHANE 74-83-9 TO-15 µg/m3 174 730
1,3-BUTADIENE 106-99-0 TO-15 µg/m3 3.12 13.6
CARBON DISULFIDE 75-15-0 TO-15 µg/m3 24300 102000
CARBON TETRACHLORIDE 56-23-5 TO-15 µg/m3 15.6 68.1
CHLOROBENZENE 108-90-7 TO-15 µg/m3 1740 7300
CHLOROETHANE 75-00-3 TO-15 µg/m3 348000 1460000
CHLOROFORM 67-66-3 TO-15 µg/m3 4.07 17.8
CHLOROMETHANE 74-87-3 TO-15 µg/m3 3130 13100
2-CHLOROTOLUENE 95-49-8 TO-15 µg/m3 NE NE
CYCLOHEXANE 110-82-7 TO-15 µg/m3 209000 876000
CHLORODIBROMOMETHANE 124-48-1 TO-15 µg/m3 NE NE
1,2-DIBROMOETHANE 106-93-4 TO-15 µg/m3 0.156 0.681
1,2-DICHLOROBENZENE 95-50-1 TO-15 µg/m3 6950 29200
1,3-DICHLOROBENZENE 541-73-1 TO-15 µg/m3 NE NE
1,4-DICHLOROBENZENE 106-46-7 TO-15 µg/m3 8.51 37.2
1,2-DICHLOROETHANE 107-06-2 TO-15 µg/m3 3.6 15.7
1,1-DICHLOROETHANE 75-34-3 TO-15 µg/m3 58.5 256
1,1-DICHLOROETHENE 75-35-4 TO-15 µg/m3 6950 29200
CIS-1,2-DICHLOROETHENE 156-59-2 TO-15 µg/m3 NE NE
TRANS-1,2-DICHLOROETHENE 156-60-5 TO-15 µg/m3 NE NE
1,2-DICHLOROPROPANE 78-87-5 TO-15 µg/m3 25.3 110
CIS-1,3-DICHLOROPROPENE 10061-01-5 TO-15 µg/m3 NE NE
TRANS-1,3-DICHLOROPROPENE 10061-02-6 TO-15 µg/m3 NE NE
1,4-DIOXANE 123-91-1 TO-15 µg/m3 18.7 81.8
ETHANOL 64-17-5 TO-15 µg/m3 NE NE
ETHYLBENZENE 100-41-4 TO-15 µg/m3 37.4 164
4-ETHYLTOLUENE 622-96-8 TO-15 µg/m3 NE NE
TRICHLOROFLUOROMETHANE 75-69-4 TO-15 µg/m3 NE NE
Client Sample ID
Lab Sample ID
Date Collected
Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL
<2.97 1.39 2.97 <2.97 1.39 2.97 <2.97 1.39 2.97 18.2 1.39 2.97
<0.626 0.357 0.626 <0.626 0.357 0.626 <0.626 0.357 0.626 <0.626 0.357 0.626
1.16 0.228 0.639 <0.639 0.228 0.639 <0.639 0.228 0.639 15 0.228 0.639
<1.04 0.311 1.04 <1.04 0.311 1.04 <1.04 0.311 1.04 <1.04 0.311 1.04
<1.34 0.471 1.34 <1.34 0.471 1.34 <1.34 0.471 1.34 <1.34 0.471 1.34
<6.21 0.757 6.21 <6.21 0.757 6.21 <6.21 0.757 6.21 <6.21 0.757 6.21
<0.776 0.381 0.776 <0.776 0.381 0.776 <0.776 0.381 0.776 <0.776 0.381 0.776
<4.43 0.23 4.43 <4.43 0.23 4.43 <4.43 0.23 4.43 <4.43 0.23 4.43
<0.622 0.317 0.622 <0.622 0.317 0.622 <0.622 0.317 0.622 14.8 0.317 0.622
<1.26 0.461 1.26 <1.26 0.461 1.26 <1.26 0.461 1.26 <1.26 0.461 1.26
<0.924 0.385 0.924 <0.924 0.385 0.924 <0.924 0.385 0.924 <0.924 0.385 0.924
<0.528 0.263 0.528 <0.528 0.263 0.528 <0.528 0.263 0.528 <0.528 0.263 0.528
<0.973 0.349 0.973 <0.973 0.349 0.973 <0.973 0.349 0.973 1.86 0.349 0.973
<0.413 0.213 0.413 <0.413 0.213 0.413 <0.413 0.213 0.413 <0.413 0.213 0.413
<1.03 0.427 1.03 <1.03 0.427 1.03 <1.03 0.427 1.03 <1.03 0.427 1.03
<0.689 0.259 0.689 <0.689 0.259 0.689 <0.689 0.259 0.689 7.96 0.259 0.689
<1.70 0.618 1.7 <1.70 0.618 1.7 <1.70 0.618 1.7 <1.70 0.618 1.7
<1.54 0.554 1.54 <1.54 0.554 1.54 <1.54 0.554 1.54 <1.54 0.554 1.54
<1.20 0.77 1.2 <1.20 0.77 1.2 <1.20 0.77 1.2 <1.20 0.77 1.2
<1.20 1.09 1.2 <1.20 1.09 1.2 <1.20 1.09 1.2 <1.20 1.09 1.2
<1.20 0.335 1.2 <1.20 0.335 1.2 <1.20 0.335 1.2 <1.20 0.335 1.2
<0.810 0.283 0.81 <0.810 0.283 0.81 <0.810 0.283 0.81 <0.810 0.283 0.81
<0.802 0.29 0.802 <0.802 0.29 0.802 <0.802 0.29 0.802 <0.802 0.29 0.802
<0.793 0.302 0.793 <0.793 0.302 0.793 <0.793 0.302 0.793 <0.793 0.302 0.793
<0.793 0.311 0.793 2.2 0.311 0.793 <0.793 0.311 0.793 4.64 0.311 0.793
<0.793 0.267 0.793 <0.793 0.267 0.793 <0.793 0.267 0.793 <0.793 0.267 0.793
<0.924 0.351 0.924 <0.924 0.351 0.924 <0.924 0.351 0.924 <0.924 0.351 0.924
<0.908 0.313 0.908 <0.908 0.313 0.908 <0.908 0.313 0.908 <0.908 0.313 0.908
<0.908 0.331 0.908 <0.908 0.331 0.908 <0.908 0.331 0.908 <0.908 0.331 0.908
<0.721 0.3 0.721 <0.721 0.3 0.721 <0.721 0.3 0.721 <0.721 0.3 0.721
60 0.5 2.36 30.7 0.5 2.36 29 0.5 2.36 4.47 0.5 2.36
3.2 0.362 0.867 <0.867 0.362 0.867 <0.867 0.362 0.867 11.4 0.362 0.867
<0.982 0.384 0.982 <0.982 0.384 0.982 <0.982 0.384 0.982 3.32 0.384 0.982
1.96 0.46 1.12 20.7 0.46 1.12 13.5 0.46 1.12 1.23 0.46 1.12
SV-11 SV-12SV-9 SV-10
L1577012-11 L1577012-12L1577012-09 L1577012-10
01/16/2023 01/16/202301/16/2023 01/16/2023
Page 5 of 6
Table C2 - VOCs in Soil Gas
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte CAS Method Units VISL
Residential
VISL
Commercial
3 1070000 4510000
Client Sample ID
Lab Sample ID
Date Collected
DICHLORODIFLUOROMETHANE 75-71-8 TO-15 µg/m3 3480 14600
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 TO-15 µg/m3 174000 730000
1,2-DICHLOROTETRAFLUOROETHANE 76-14-2 TO-15 µg/m3 NE NE
HEPTANE 142-82-5 TO-15 µg/m3 13900 58400
HEXACHLORO-1,3-BUTADIENE 87-68-3 TO-15 µg/m3 4.25 18.6
N-HEXANE 110-54-3 TO-15 µg/m3 24300 102000
ISOPROPYLBENZENE 98-82-8 TO-15 µg/m3 13900 58400
METHYLENE CHLORIDE 75-09-2 TO-15 µg/m3 3380 40900
METHYL BUTYL KETONE 591-78-6 TO-15 µg/m3 1040 4380
2-BUTANONE (MEK)78-93-3 TO-15 µg/m3 174000 730000
4-METHYL-2-PENTANONE (MIBK)108-10-1 TO-15 µg/m3 104000 438000
METHYL METHACRYLATE 80-62-6 TO-15 µg/m3 24300 102000
METHYL TERT-BUTYL ETHER 1634-04-4 TO-15 µg/m3 360 1570
NAPHTHALENE 91-20-3 TO-15 µg/m3 2.75 12
2-PROPANOL 67-63-0 TO-15 µg/m3 6950 29200
PROPENE 115-07-1 TO-15 µg/m3 104000 438000
STYRENE 100-42-5 TO-15 µg/m3 34800 146000
1,1,2,2-TETRACHLOROETHANE 79-34-5 TO-15 µg/m3 1.61 7.05
TETRACHLOROETHENE 127-18-4 TO-15 µg/m3 360 1570
TETRAHYDROFURAN 109-99-9 TO-15 µg/m3 69500 292000
TOLUENE 108-88-3 TO-15 µg/m3 174000 730000
1,2,4-TRICHLOROBENZENE 120-82-1 TO-15 µg/m3 69.5 292
1,1,1-TRICHLOROETHANE 71-55-6 TO-15 µg/m3 174000 730000
1,1,2-TRICHLOROETHANE 79-00-5 TO-15 µg/m3 5.85 25.6
TRICHLOROETHENE 79-01-6 TO-15 µg/m3 15.9 99.7
1,2,4-TRIMETHYLBENZENE 95-63-6 TO-15 µg/m3 2090 8760
1,3,5-TRIMETHYLBENZENE 108-67-8 TO-15 µg/m3 2090 8760
2,2,4-TRIMETHYLPENTANE 540-84-1 TO-15 µg/m3 NE NE
VINYL CHLORIDE 75-01-4 TO-15 µg/m3 5.59 92.9
VINYL BROMIDE 593-60-2 TO-15 µg/m3 2.92 12.8
VINYL ACETATE 108-05-4 TO-15 µg/m3 6950 29200
XYLENES, TOTAL 1330-20-7 TO-15 µg/m3 3480 14600
M&P-XYLENE 1330-20-7 TO-15 µg/m3 3480 14600
O-XYLENE 95-47-6 TO-15 µg/m3 3480 14600
Blue italicized non-detect results (e.g.,<0.0100 ) exceed one or more of the screening levels.
E: The analyte concentration exceeds the upper limit of the calibration range of the instrument established
by the initial calibration (ICAL).
Bold value exceeds Method Detection Limit (MDL). Color shaded value exceeds screening level.
Qualifiers (Q):
EPA VISL: Environmental Protection Agency Target Sub-Slab and Near-source Soil Gas Concentration
NA: Not Applicable.NE:Not Established.<:Less than Reported Detection Limit (RDL).µg/m3:
micrograms per cubinc meter.R: Result was rejected from the dataset on QA/QC grounds.
Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL Result Q MDL RDL
SV-11 SV-12SV-9 SV-10
L1577012-11 L1577012-12L1577012-09 L1577012-10
01/16/2023 01/16/202301/16/2023 01/16/2023
<0.989 0.678 0.989 <0.989 0.678 0.989 <0.989 0.678 0.989 2.25 0.678 0.989
<1.53 0.608 1.53 <1.53 0.608 1.53 <1.53 0.608 1.53 <1.53 0.608 1.53
<1.40 0.622 1.4 <1.40 0.622 1.4 <1.40 0.622 1.4 <1.40 0.622 1.4
3.04 0.425 0.818 <0.818 0.425 0.818 <0.818 0.425 0.818 22.9 0.425 0.818
<6.73 1.12 6.73 <6.73 1.12 6.73 <6.73 1.12 6.73 <6.73 1.12 6.73
<2.22 0.726 2.22 <2.22 0.726 2.22 <2.22 0.726 2.22 13.8 0.726 2.22
<0.983 0.382 0.983 <0.983 0.382 0.983 <0.983 0.382 0.983 <0.983 0.382 0.983
<0.694 0.34 0.694 <0.694 0.34 0.694 <0.694 0.34 0.694 <0.694 0.34 0.694
<5.11 0.544 5.11 <5.11 0.544 5.11 <5.11 0.544 5.11 <5.11 0.544 5.11
<3.69 0.24 3.69 <3.69 0.24 3.69 <3.69 0.24 3.69 4.22 0.24 3.69
<5.12 0.313 5.12 <5.12 0.313 5.12 <5.12 0.313 5.12 <5.12 0.313 5.12
<0.819 0.359 0.819 <0.819 0.359 0.819 <0.819 0.359 0.819 <0.819 0.359 0.819
<0.721 0.233 0.721 <0.721 0.233 0.721 <0.721 0.233 0.721 <0.721 0.233 0.721
<3.30 1.83 3.3 <3.30 1.83 3.3 <3.30 1.83 3.3 <3.30 1.83 3.3
<3.07 0.649 3.07 <3.07 0.649 3.07 <3.07 0.649 3.07 <3.07 0.649 3.07
<2.15 0.16 2.15 <2.15 0.16 2.15 <2.15 0.16 2.15 3.08 0.16 2.15
<0.851 0.335 0.851 <0.851 0.335 0.851 <0.851 0.335 0.851 <0.851 0.335 0.851
<1.37 0.511 1.37 <1.37 0.511 1.37 <1.37 0.511 1.37 <1.37 0.511 1.37
66.1 0.553 1.36 978 5.53 13.6 85.5 0.553 1.36 3400 5.53 13.6
<0.590 0.216 0.59 <0.590 0.216 0.59 <0.590 0.216 0.59 <0.590 0.216 0.59
12.6 0.328 1.88 2.42 0.328 1.88 <1.88 0.328 1.88 127 0.328 1.88
<4.66 1.1 4.66 <4.66 1.1 4.66 <4.66 1.1 4.66 <4.66 1.1 4.66
<1.09 0.4 1.09 <1.09 0.4 1.09 <1.09 0.4 1.09 1.16 0.4 1.09
<1.09 0.422 1.09 <1.09 0.422 1.09 <1.09 0.422 1.09 <1.09 0.422 1.09
21.5 0.364 1.07 148 0.364 1.07 60.5 0.364 1.07 140 0.364 1.07
1.32 0.375 0.982 <0.982 0.375 0.982 <0.982 0.375 0.982 4.51 0.375 0.982
<0.982 0.382 0.982 <0.982 0.382 0.982 <0.982 0.382 0.982 7.07 0.382 0.982
<0.934 0.621 0.934 <0.934 0.621 0.934 <0.934 0.621 0.934 177 0.621 0.934
<0.511 0.243 0.511 <0.511 0.243 0.511 <0.511 0.243 0.511 <0.511 0.243 0.511
<0.875 0.373 0.875 <0.875 0.373 0.875 <0.875 0.373 0.875 <0.875 0.373 0.875
<0.704 0.408 0.704 <0.704 0.408 0.704 <0.704 0.408 0.704 <0.704 0.408 0.704
18.5 0.586 2.61 <2.61 0.586 2.61 <2.61 0.586 2.61 72.9 0.586 2.61
13.3 0.585 1.73 <1.73 0.585 1.73 <1.73 0.585 1.73 55.9 0.585 1.73
5.12 0.359 0.867 <0.867 0.359 0.867 <0.867 0.359 0.867 16.8 0.359 0.867
Page 6 of 6
Table C3 - MW-1 Historical Groundwater Data
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1
11/21/2019 1/9/2020 2/27/2020 5/20/2020 7/27/2020 9/2/2020 3/2/2021 6/22/2021 7/26/2021 8/31/2021 9/28/2021 1/12/2023
Analyte CAS Method Units MCL VISL
Residential
VISL
Commercial UGWQS Result Result Result Result Result Result Result Result Result Result Result Result
CIS-1,2-DICHLOROETHENE 156-59-2 8260B mg/l 0.07 NE NE 0.07 <0.0125 0.187 1.19 NA 0.537 <0.0010 <0.001 1.87 0.0012 <0.001 <0.001 0.393
TETRACHLOROETHENE 127-18-4 8260B mg/l 0.005 0.0149 0.0652 0.005 0.0211 0.0071 0.003 NA 0.953 0.0047 <0.001 0.381 <0.001 0.0614 <0.001 1.1
TRICHLOROETHENE 79-01-6 8260B mg/l 0.005 0.00119 0.00743 0.005 0.0239 0.0152 0.015 NA 1.87 <0.0010 <0.001 0.627 <0.001 0.0004 <0.001 0.221
VINYL CHLORIDE 75-01-4 8260B mg/l 0.002 0.000147 0.00245 0.002 <0.0125 <0.0125 0.006 NA 0.002 <0.0010 <0.001 0.0413 <0.001 <0.001 <0.001 0.00456
All pre-2023 results collected by others.
NE:Not Established.<:Less than Reported Detection Limit (RDL).mg/l:Milligrams per liter.
Bold value exceeds Method Detection Limit (MDL). Color shaded value exceeds screening level.
EPA VISL: Target Groundwater Concentration (TGC) Vapor Intrusion Screening Level (VISL); April 2022.
EPA MCL: Environmental Protection Agency Maximum Contaminant Level for drinking water (May 2022).
NA:Not Analyzed
Date Collected
Sample Location
UGWQS:Utah Ground Water Quality Standards.
Page 1 of 1
Table C4 - MW-2 Historical Groundwater Data
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2
11/21/2019 1/9/2020 2/27/2020 5/20/2020 7/27/2020 9/2/2020 3/2/2021 6/22/2021 7/26/2021 8/31/2021 9/28/2021 1/12/2023
Analyte CAS Method Units MCL VISL
Residential
VISL
Commercial UGWQS Result Result Result Result Result Result Result Result Result Result Result Result
CIS-1,2-DICHLOROETHENE 156-59-2 8260B mg/l 0.07 NE NE 0.07 1.92 1.54 0.0065 NA 2.84 2.29 4.00 2.94 <0.001 <0.001 <0.001 1.42
TETRACHLOROETHENE 127-18-4 8260B mg/l 0.005 0.0149 0.0652 0.005 8.53 3.79 0.064 NA 0.0758 0.0363 0.0009 0.0011 <0.001 0.003 0.01 0.0845
TRICHLOROETHENE 79-01-6 8260B mg/l 0.005 0.00119 0.00743 0.005 7.52 3.48 0.0107 NA 1.31 0.715 0.225 0.188 <0.001 0.112 0.0466 0.0388
VINYL CHLORIDE 75-01-4 8260B mg/l 0.002 0.000147 0.00245 0.002 0.009 0.0071 <0.0050 NA 0.0087 0.0129 0.0578 0.116 <0.001 0.0528 0.055 0.0712
All pre-2023 results collected by others.
UGWQS:Utah Ground Water Quality Standards.
NE:Not Established.<:Less than Reported Detection Limit (RDL).mg/l:Milligrams per liter.
Bold value exceeds Method Detection Limit (MDL). Color shaded value exceeds screening level.
Sample Location
Date Collected
EPA VISL: Target Groundwater Concentration (TGC) Vapor Intrusion Screening Level (VISL); April 2022.
EPA MCL: Environmental Protection Agency Maximum Contaminant Level for drinking water (May 2022).
NA:Not Analyzed
Page 1 of 1
Table C5 - MW-3 Historical Groundwater Data
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3
11/21/2019 1/9/2020 2/27/2020 5/20/2020 7/27/2020 9/2/2020 3/2/2021 6/22/2021 7/26/2021 8/31/2021 9/28/2021 1/12/2023
Analyte CAS Method Units MCL VISL
Residential
VISL
Commercial UGWQS Result Result Result Result Result Result Result Result Result Result Result Result
CIS-1,2-DICHLOROETHENE 156-59-2 8260B mg/l 0.07 NE NE 0.07 <0.0125 0.55 <0.0050 NA 0.764 0.985 0.742 0.803 <0.001 <0.001 <0.001 1.27
TETRACHLOROETHENE 127-18-4 8260B mg/l 0.005 0.0149 0.0652 0.005 <0.0125 12.4 0.0063 NA 0.0426 1.58 0.162 0.166 <0.001 18.4 11.1 0.38
TRICHLOROETHENE 79-01-6 8260B mg/l 0.005 0.00119 0.00743 0.005 <0.0125 2.14 0.0138 NA 0.25 3.97 3.11 2.95 <0.001 5.75 <0.001 1.82
VINYL CHLORIDE 75-01-4 8260B mg/l 0.002 0.000147 0.00245 0.002 <0.0125 <0.0125 <0.0050 NA <0.0050 0.0026 0.0024 0.005 <0.001 0.0016 0.0162 0.00672
All pre-2023 results collected by others.
UGWQS:Utah Ground Water Quality Standards.
NE:Not Established.<:Less than Reported Detection Limit (RDL).mg/l:Milligrams per liter.
Bold value exceeds Method Detection Limit (MDL). Color shaded value exceeds screening level.
Sample Location
Date Collected
EPA VISL: Target Groundwater Concentration (TGC) Vapor Intrusion Screening Level (VISL); April 2022.
EPA MCL: Environmental Protection Agency Maximum Contaminant Level for drinking water (May 2022).
NA:Not Analyzed
Page 1 of 1
Table C6 - MW-4 Historical Groundwater Data
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
MW-4 MW-4 MW-4 MW-4 MW-4 MW-4 MW-4 MW-4 MW-4 MW-4 MW-4 MW-4
11/21/2019 1/9/2020 2/27/2020 5/20/2020 7/27/2020 9/2/2020 3/2/2021 6/22/2021 7/26/2021 8/31/2021 9/28/2021 1/12/2023
Analyte CAS Method Units MCL VISL
Residential
VISL
Commercial UGWQS Result Result Result Result Result Result Result Result Result Result Result Result
CIS-1,2-DICHLOROETHENE 156-59-2 8260B mg/l 0.07 NE NE 0.07 NA NA 0.0227 0.0154 0.0691 0.0513 0.0099 0.0057 <0.001 <0.001 0.0033 0.000308
TETRACHLOROETHENE 127-18-4 8260B mg/l 0.005 0.0149 0.0652 0.005 NA NA 0.0702 0.0011 0.0025 0.0009 0.0079 0.0066 0.0024 0.0054 0.0021 0.00178
TRICHLOROETHENE 79-01-6 8260B mg/l 0.005 0.00119 0.00743 0.005 NA NA 0.0278 0.0022 0.0114 0.0017 0.018 0.0081 0.0019 0.0034 0.0027 0.000473
VINYL CHLORIDE 75-01-4 8260B mg/l 0.002 0.000147 0.00245 0.002 NA NA <0.0050 0.028 0.0018 0.0017 0.0012 0.0021 <0.001 <0.001 0.0079 0.00136
All pre-2023 results collected by others.
UGWQS:Utah Ground Water Quality Standards.
NE:Not Established.<:Less than Reported Detection Limit (RDL).mg/l:Milligrams per liter.
Bold value exceeds Method Detection Limit (MDL). Color shaded value exceeds screening level.
Sample Location
Date Collected
EPA VISL: Target Groundwater Concentration (TGC) Vapor Intrusion Screening Level (VISL); April 2022.
EPA MCL: Environmental Protection Agency Maximum Contaminant Level for drinking water (May 2022).
NA:Not Analyzed
Page 1 of 1
Table C7 - MW-5 Historical Groundwater Data
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
MW-5 MW-5 MW-5 MW-5 MW-5 MW-5 MW-5 MW-5 MW-5 MW-5 MW-5 MW-5
11/21/2019 1/9/2020 2/27/2020 5/20/2020 7/27/2020 9/2/2020 3/2/2021 6/22/2021 7/26/2021 8/31/2021 9/28/2021 1/12/2023
Analyte CAS Method Units MCL VISL
Residential
VISL
Commercial UGWQS Result Result Result Result Result Result Result Result Result Result Result Result
CIS-1,2-DICHLOROETHENE 156-59-2 8260B mg/l 0.07 NE NE 0.07 NA NA NA 0.0526 0.0201 0.0136 0.0851 0.0442 0.0227 0.0489 0.0601 0.0412
TETRACHLOROETHENE 127-18-4 8260B mg/l 0.005 0.0149 0.0652 0.005 NA NA NA 0.0016 0.0086 0.012 0.0009 0.0009 0.0007 0.0006 0.0005 0.000659
TRICHLOROETHENE 79-01-6 8260B mg/l 0.005 0.00119 0.00743 0.005 NA NA NA 0.0031 0.0113 0.0121 0.004 0.0028 0.0038 0.0024 0.0022 0.00141
VINYL CHLORIDE 75-01-4 8260B mg/l 0.002 0.000147 0.00245 0.002 NA NA NA 0.0083 0.003 0.0049 0.0035 0.002 <0.001 0.0012 0.0016 0.00659
All pre-2023 results collected by others.
UGWQS:Utah Ground Water Quality Standards.
NE:Not Established.<:Less than Reported Detection Limit (RDL).mg/l:Milligrams per liter.
Bold value exceeds Method Detection Limit (MDL). Color shaded value exceeds screening level.
Sample Location
Date Collected
EPA VISL: Target Groundwater Concentration (TGC) Vapor Intrusion Screening Level (VISL); April 2022.
EPA MCL: Environmental Protection Agency Maximum Contaminant Level for drinking water (May 2022).
NA:Not Analyzed
Page 1 of 1
Table C8.1 - Duplicate Pair–VOCs in Groundwater
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte Method Units Result Q High
Limit
High
Limit
Type
Dilution
Factor Result Q High
Limit
High
Limit
Type
Dilution
Factor Results  5 x RDL?RPD
RPD Within
+/- 25%
for Groundwater?
ACETONE 8260B mg/l
ND 0.05
RDL 1
ND 0.05
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
ACROLEIN 8260B mg/l
ND 0.05
RDL 1
ND 0.05
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
ACRYLONITRILE 8260B mg/l
ND 0.01
RDL 1
ND 0.01
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
BENZENE 8260B mg/l
0.000141 J 0.001
RDL 1
0.00015 J 0.001
RDL 1
No, Original and Duplicate results < 5 x RDL, RPD not calculated.Field Duplicate pair
within control because the difference between the Original and Duplicate sample
results was less than RDL.
BROMOBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
BROMODICHLOROMETHANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
BROMOFORM 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
BROMOMETHANE 8260B mg/l
ND 0.005
RDL 1
ND 0.005
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
N-BUTYLBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
SEC-BUTYLBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
TERT-BUTYLBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
CARBON TETRACHLORIDE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
CHLOROBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
CHLORODIBROMOMETHANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
CHLOROETHANE 8260B mg/l
ND 0.005
RDL 1
ND 0.005
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
Original Sample Duplicate Sample
Date Collected 1/12/2023 1/12/2023
Lab Sample ID L1576151-01 L1576151-05
Client Sample ID MW-1 DUP-1
Page 1 of 5
Table C8.1 - Duplicate Pair–VOCs in Groundwater
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte Method Units Result Q High
Limit
High
Limit
Type
Dilution
Factor Result Q High
Limit
High
Limit
Type
Dilution
Factor Results  5 x RDL?RPD
RPD Within
+/- 25%
for Groundwater?
Original Sample Duplicate Sample
Date Collected 1/12/2023 1/12/2023
Lab Sample ID L1576151-01 L1576151-05
Client Sample ID MW-1 DUP-1
2-CHLOROETHYL VINYL ETHER 8260B mg/l
ND 0.05
RDL 1
ND 0.05
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
CHLOROFORM 8260B mg/l
ND 0.005
RDL 1
ND 0.005
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
CHLOROMETHANE 8260B mg/l
ND J4 0.0025
RDL 1
ND J4 0.0025
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
2-CHLOROTOLUENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
4-CHLOROTOLUENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,2-DIBROMO-3-CHLOROPROPANE 8260B mg/l
ND 0.005
RDL 1
ND 0.005
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,2-DIBROMOETHANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
DIBROMOMETHANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,2-DICHLOROBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,3-DICHLOROBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,4-DICHLOROBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
DICHLORODIFLUOROMETHANE 8260B mg/l
ND 0.005
RDL 1
ND 0.005
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,1-DICHLOROETHANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,2-DICHLOROETHANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,1-DICHLOROETHENE 8260B mg/l
0.000349 J 0.001
RDL 1
0.000374 J 0.001
RDL 1
No, Original and Duplicate results < 5 x RDL, RPD not calculated.Field Duplicate pair
within control because the difference between the Original and Duplicate sample
results was less than RDL.
CIS-1,2-DICHLOROETHENE 8260B mg/l 0.393 0.02 RDL 20 0.362 0.02 RDL 20 Yes, RPD calculated 8.2%Yes
Page 2 of 5
Table C8.1 - Duplicate Pair–VOCs in Groundwater
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte Method Units Result Q High
Limit
High
Limit
Type
Dilution
Factor Result Q High
Limit
High
Limit
Type
Dilution
Factor Results  5 x RDL?RPD
RPD Within
+/- 25%
for Groundwater?
Original Sample Duplicate Sample
Date Collected 1/12/2023 1/12/2023
Lab Sample ID L1576151-01 L1576151-05
Client Sample ID MW-1 DUP-1
TRANS-1,2-DICHLOROETHENE 8260B mg/l 0.00715 0.001 RDL 1 0.00732 0.001 RDL 1 Yes, RPD calculated 2.3%Yes
1,2-DICHLOROPROPANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,1-DICHLOROPROPENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,3-DICHLOROPROPANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
CIS-1,3-DICHLOROPROPENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
TRANS-1,3-DICHLOROPROPENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
2,2-DICHLOROPROPANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
DI-ISOPROPYL ETHER 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
ETHYLBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
HEXACHLORO-1,3-BUTADIENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
ISOPROPYLBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
P-ISOPROPYLTOLUENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
2-BUTANONE (MEK)8260B mg/l
ND 0.01
RDL 1
ND 0.01
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
METHYLENE CHLORIDE 8260B mg/l
ND 0.005
RDL 1
ND 0.005
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
4-METHYL-2-PENTANONE (MIBK)8260B mg/l
ND 0.01
RDL 1
ND 0.01
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
METHYL TERT-BUTYL ETHER 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
Page 3 of 5
Table C8.1 - Duplicate Pair–VOCs in Groundwater
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte Method Units Result Q High
Limit
High
Limit
Type
Dilution
Factor Result Q High
Limit
High
Limit
Type
Dilution
Factor Results  5 x RDL?RPD
RPD Within
+/- 25%
for Groundwater?
Original Sample Duplicate Sample
Date Collected 1/12/2023 1/12/2023
Lab Sample ID L1576151-01 L1576151-05
Client Sample ID MW-1 DUP-1
NAPHTHALENE 8260B mg/l
ND 0.005
RDL 1
ND 0.005
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
N-PROPYLBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
STYRENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,1,1,2-TETRACHLOROETHANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,1,2,2-TETRACHLOROETHANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,1,2-TRICHLOROTRIFLUOROETHANE8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
TETRACHLOROETHENE 8260B mg/l 1.1 J4 0.02 RDL 20 1.02 J4 0.02 RDL 20 Yes, RPD calculated 7.5%Yes
TOLUENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,2,3-TRICHLOROBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,2,4-TRICHLOROBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
Page 4 of 5
Table C8.1 - Duplicate Pair–VOCs in Groundwater
SLC Station Center - 550 and 570 West 400 South, Salt Lake City, Salt Lake County, Utah
Terracon Project No. 61217142 Task 4.4
Analyte Method Units Result Q High
Limit
High
Limit
Type
Dilution
Factor Result Q High
Limit
High
Limit
Type
Dilution
Factor Results  5 x RDL?RPD
RPD Within
+/- 25%
for Groundwater?
Original Sample Duplicate Sample
Date Collected 1/12/2023 1/12/2023
Lab Sample ID L1576151-01 L1576151-05
Client Sample ID MW-1 DUP-1
1,1,1-TRICHLOROETHANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,1,2-TRICHLOROETHANE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
TRICHLOROETHENE 8260B mg/l 0.221 0.02 RDL 20 0.205 0.02 RDL 20 Yes, RPD calculated 7.5%Yes
TRICHLOROFLUOROMETHANE 8260B mg/l
ND 0.005
RDL 1
ND 0.005
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,2,3-TRICHLOROPROPANE 8260B mg/l
ND 0.0025
RDL 1
ND 0.0025
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,2,4-TRIMETHYLBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,2,3-TRIMETHYLBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
1,3,5-TRIMETHYLBENZENE 8260B mg/l
ND 0.001
RDL 1
ND 0.001
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
VINYL CHLORIDE 8260B mg/l
0.00456 0.001
RDL 1
0.00481 0.001
RDL 1
No, Original and Duplicate results < 5 x RDL, RPD not calculated.Field Duplicate pair
within control because the difference between the Original and Duplicate sample
results was less than RDL.
XYLENES, TOTAL 8260B mg/l
ND 0.003
RDL 1
ND 0.003
RDL 1
No, Original and Duplicate both < RDL, RPD not calculated.Field Duplicate pair within
control because the difference between the Original and Duplicate sample RDLs was
less than RDL.
Qualifiers (Q):
J: The identification of the analyte is acceptable; the reported value is an estimate.
J4: The associated batch QC was above the established quality control range for accuracy.
mg/l:Milligrams per liter.
RDL - Laboratory reported detection limit.
RPD - Relative Percent Difference was calculated when analyte concentrations are greater than or equal to five times the RDL. QA/QC RPD Goal is less than 25% for groundwater samples.
For analytes reported at concentrations less than five times the RDL, the QA/QC Goal is the difference between the sample and its duplicate is less than RDL for groundwater samples.
Page 5 of 5
Site Characterization Report
SLC Station Center | Salt Lake City, Utah
April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials 3
APPENDIX C
Eagle Synergystic HRSC Survey Report

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Eagle Synergistic
Optimizing Technologies, LLC

Specializing in High Resolution Site Characterization Technology

Daniel Dean
Terracon
[e-mail]
801-915-5541

RE:
570 W 400 S
Salt Lake City, UT
Project # 22.131

Dan,

Below is a comprehensive report detailing the HRSC investigative services conducted at your Salt Lake City site. It
includes an overview of logistics, individual logs, cross-sections of data, as well as a data synopsis.

Please let us know if you have any questions or requests and feel free to contact us anytime.

We strive to ensure that our client’s expectations are met and exceeded in all aspects. We look forward to working
with you again in the future.

Thank you,

Janet L Castle, PG, President
[e-mail]
Eagle Synergistic
751 Pine Ridge Rd #100
Golden, CO 80403
Direct: 720-475-0022
Office: 303-305-7783
www.EagleSynergistic.com
Locations Nationwide: CO, TX, CA, GA, PA, IL
WOSB

Project #22.131
COMPREHENSIVE REPORT
2/14/2023

570 W 400 S
Salt Lake City, UT
Map Data: Google, © 2023

Page | i

Table of Contents
Project Overview ............................................................................................................................................................ 1
Project Summary ........................................................................................................................................................ 1
Personnel: .................................................................................................................................................................. 1
Site Access: ................................................................................................................................................................ 1
HRSC Boring Locations ................................................................................................................................................. 2
Detector Interpretation ................................................................................................................................................... 3
Understanding EC and HPT data ................................................................................................................................... 4
EC (Electrical Conductivity): ....................................................................................................................................... 4
HPT Pressure ............................................................................................................................................................. 4
Understanding MIP Detectors ........................................................................................................................................ 5
Photo Ionization Detector (PID) .................................................................................................................................. 5
Flame Ionization Detector (FID) .................................................................................................................................. 5
Halogen Specific Detector (XSD) ............................................................................................................................... 6
HRSC Data Overview .................................................................................................................................................... 7
Lithology: .................................................................................................................................................................... 7
Interpretation .............................................................................................................................................................. 7
Quality Assurance .......................................................................................................................................................... 8
Individual Logs ............................................................................................................................................................ 9
Example Log (for reference) ....................................................................................................................................... 9
MIP OVERLAYS (Common Scale) – EC (mS/m) and HPT Pressure (PSI) .............................................................. 10
XSD (µV) and PID (µV)............................................................................................................................................. 12
XSD (µV) and EC (mS/m) ......................................................................................................................................... 14
XSD (µV) and HPT Pressure (psi) ............................................................................................................................ 16
MIP Cross Section Map ............................................................................................................................................... 18
MIP Cross Sections A - A’ ............................................................................................................................................ 19
EC (mS/m) With XSD (µV) ....................................................................................................................................... 19
XSD (µV) With PID (µV) ........................................................................................................................................... 20
MIP Cross Sections B - B’ ............................................................................................................................................ 21
EC (mS/m) With XSD (µV) ....................................................................................................................................... 21
XSD (µV) With PID (µV) ........................................................................................................................................... 22
Next Steps ................................................................................................................................................................... 23

Page | 1

PROJECT OVERVIEW
Project Summary
Between February 7 and February 9, Eagle Synergistic worked with Terracon to complete an
HRSC investigation of an industrial property in Salt Lake City, UT. Direct Push Technology
(DPT) services were provided by Eagle Synergistic. This investigation involved advancing 16
Membrane Interface Probe (MIP) borings to depths ranging from approximately 32-52 feet
below ground surface (bgs). The MIP was run in conjunction with the electrical conductivity
dipole (EC) and the Hydraulic Profiling Tool (HPT). Collectively, this probe configuration is
referred to as the MIHPT. The investigation had two objectives: The first objective was to
identify a suspected DNAPL/ chlorinated solvent source area. The second objective was to
delineate the chlorinated plume vertically and horizontally.

Personnel:
Eagle Synergistic
Drew Semivan
Harry Jordan
Daniel Traen
Terracon Daniel Dean

Site Access:
For the purposes of this investigation, the site was generally accessible. The investigation area
was limited to the exterior eastern half of the property, which was an open space with gravel, dirt,
asphalt or concrete surface, depending on the location.

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HRSC BORING LOCATIONS

Boring locations are based on estimated field measurements and are subject to change pending collection of GPS locations.
- XSD

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DETECTOR INTERPRETATION
Typical standard MIP configurations use three gas phase detectors: a photo-ionization detector
(PID), flame-ionization (FID) and a halogen specific detector (XSD). The PID responds to
compounds which have an ionization potential of 10.6eV or less. These compounds include
both chlorinated and non-chlorinated hydrocarbons. The FID will respond when organic
compounds are present in the carrier gas stream at high enough concentration to combust in
the flame, which increases the flames ionization voltage. The XSD responds only to
halogenated compounds which are made up of chlorinated (most common halogenated
environmental contaminant), brominated and fluorinated compounds. Based upon which
detector or detector series a contaminant responds, we can determine if the contaminants are
halogenated, or petroleum based.
Chlorinated compounds such as trichloroethylene and perchloroethylene are detected by the
XSD and PID and respond in a similar profile. This is typical of common double bonded
chlorinated compounds which have an ionization potential below 10.6 eV. Single-bonded
chlorinated compounds such as chloroform, methylene chloride and 1,1,1,-trichloroethane have
an ionization potential above 10.6 eV, which results in a higher response on the XSD but will not
be detected by the PID.
Standard MIP systems can identify compound families and determine general compound
classes. The only sure way of determining contaminant concentration from MIP responses is to
take confirmation soil and/or groundwater samples for laboratory analysis. After obtaining the
results, the actual concentrations can be compared to the MIP detector responses and
concentrations may be estimated across the site.
In general, higher HPT pressure values indicate more compact soil. Likewise, higher EC values
indicate smaller grain size, increased pore-fluid conductivity, or higher compaction. HPT is
simply measuring the pressure required to maintain a set flow of water injected into the side-wall
soil. The EC is measuring how readily an electrical current can pass through the soil. A tighter,
more compact soil will display higher values than a looser, less compact soil.
Generally, EC values and HPT pressure should trend together. When the EC reads a lower
value (coarser-grained material (e.g., sand or gravel)) the HPT pressure tends to generally read
lower in that interval as the sand/gravel will accept the injected water with ease. When the EC
reads a higher value (finer-grained material, (e.g., silts and clays) HPT pressure tends to read
higher. In tight, impermeable clays, HPT pressure can often reach 110 pounds per square inch
(PSI), the system maximum pressure, while EC values may range from 10-400 milli Siemens
per meter (mS/m).
This report, and the information contained herein, consists solely of qualitative information
provided to the recipient for its own independent use. Eagle Synergistic will not provide to the
recipient or owner(s) of the subject property any recommendations related to this report or any
information contained herein, and Eagle Synergistic hereby disclaims all responsibility related to
the same.

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UNDERSTANDING EC AND HPT DATA
EC (Electrical Conductivity):
• Soil conductivity, in general, varies with grain size.
• Fine-grained soils, such as silts or clays, tend to produce higher EC signals than coarse-
grained sands and gravels.
• The EC can also detect salts, metals, etc.

HPT Pressure
As shown in the figure below, water from a supply tank (A) is pumped by a pump (B) housed
within the HPT controller at a set flow rate through the trunkline (D) and into the formation after
passing through the injection screen (F). HPT system injection pressure measurements are
made using a downhole pressure transducer (E). Use of a transducer in the downhole position
allows measurement of the injection pressure at the HPT screen only and excludes frictional
losses through the flow tube of the HPT trunkline. The downhole transducer position is also
necessary for making hydrostatic pressure measurements at the probe.

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UNDERSTANDING MIP DETECTORS
During normal MIHPT operation, the general detection limit of most compounds is around 1ppm. For ppb
concentrations, the Low -Level MIHPT configuration is recommended. Contact Eagle Synergistic for further details.
Photo Ionization Detector (PID)
The PID uses ultraviolet radiation to ionize molecules in the effluent of the MIP carrier gas stream for
analyte detection. The PID is a non-destructive detector and can therefore be used in series with other
detector types. For a compound to be detected by a PID the chemical must have an ionization potential
below the electron voltage of the PID lamp. The most common PID lamp used with the MIP is 10.6eV.
The PID is generally used for detection of aromatic hydrocarbons such as benzene and toluene and
double bonded chlorinated compounds such as trichloroethylene and perchloroethylene.
Flame Ionization Detector (FID)
The FID uses a hydrogen/air flame to produce ions and electrons that can conduct electricity through the
flame. A potential is applied across the burner tip and the collector electrode. The resulting current is then
amplified and recorded. The FID will respond to any organic compound at a large enough concentration.
The FID has a lower sensitivity to common VOC analytes compared to the PID or XSD, and typically
serves as a confirmation detector run in tandem with the PID and XSD. It is, however, the primary
detector for mapping methane impacts since methane does not show up on the other detectors.

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Halogen Specific Detector (XSD)
The XSD operates in an oxidative state that converts halogenated organics into free halogen atoms.
These halogen (X) atoms are adsorbed onto the activated platinum surface of the detector probe
assembly resulting in an increased thermionic emission. This emission current comprised of free
electrons, negative and positive ions which provides a corresponding voltage that is measured via an
electrometer circuit in the detector controller. The XSD is a destructive detector used for the detection
of total halogenated VOCs in the MIP system.

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HRSC DATA OVERVIEW
Lithology:
From surface to ~10’ bgs, many borings displayed variable EC/HPT responses. Some locations,
e.g., MIP-02 and MIP-07, displayed anomalous EC values beyond those seen at other
locations; this is likely due to the presence of metallic debris in the shallow fill at these locations.
Below approximately 10’ bgs, most borings displayed a similar EC/HPT profile: Generally, an
area of lower permeability is seen from 10-15’bgs. This clayey interval is often punctuated by
several more-permeable intervals of lower HPT pressure. HPT/EC values below are consistent
with generally interbedded clays and silts.

Interpretation
Lower magnitude, but significant, PID/XSD responses were observed across much of the
southern investigation area. Many of these impacts were observed between 15 and 25’ bgs.
Moving north, beyond the historic remedial injection area, higher magnitude PID/XSD responses
were observed at increasingly shallow depths. MIP-12 and MIP-13 displayed the highest
magnitude XSD responses across the greatest vertical extent. MIP-15 also displayed significant
XSD response and was notably the highest magnitude response observed above the known
groundwater table. Western delineation of MIP-15 could not be completed due to utility clearance
concerns within the building. Many of these elevated XSD responses coincided with areas of
increased EC and/or HPT pressure, indicating a potential relationship between lithology and
presence of chlorinated compounds.
It is also worth noting that significant FID responses were observed in every boring below
approximately 20’ bgs. These FID responses were generally not accompanied by PID responses,
potentially indicating the presence of methane. Per discussion with D. Dean, this is not uncommon
for the area.

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QUALITY ASSURANCE
All probes contain an electrical conductivity dipole, which is tested for performance prior to the
tooling being advanced. The dipole is tested using a low-value resistor and a high-value
resistor, and the results for this test are presented with each boring log. 
HPT ports and transducers are tested for performance prior to advancement using a reference
tube, which allows the static pressure of a 6-in water column to be measured. We ensure that
the transducer reads this value within a reasonable margin of error. This test is performed at the
beginning and end of each boring, and the results are included.
Membrane Interface Probes and the necessary gas chromatograph detectors are tested
simultaneously using site-specific chemical standards of known concentrations. These
standards are determined and mixed before work begins. Testing involves heating the MIP
probe while it is at the surface and placing the standard directly onto the membrane.
The contaminant then passes through the membrane and is carried into the chromatograph,
where it is picked up by the various detectors, (PID, FID, XSD). For this site, Eagle Synergistic’s
field specialists used standards of 1, 10, and 100 ppm of TCE. The response from each detector
is recorded to ensure they are within the operating range. Additionally, the “trip time” (the time it
takes for the contaminant to travel from the membrane to the gas chromatograph) is also
recorded. 
These QA/response tests are completed before and after each individual boring to ensure that
the system is functioning correctly and responding well to the site-specific contaminant of
concern. All QA/response logs are automatically compiled by the software and are available at
the client’s request.
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Individual Logs
Please refer to Attachment A for individual scale logs.
Example Log (for reference)
The following logs and overlays may contain descriptive text boxes to help with interpretations of your HRSC data. Contact Eagle Synergistic for additional interpretations.
Lower Pressure
indicates higher
permeability
A relative rise in
detector signal
indicates presence
of VOCs
Higher EC
indicates finer-
grained material
Lower EC
indicates coarser-
grained material
Higher Pressure
indicates lower
permeability
Descriptive text boxes are general
interpretations only. Refer to Eagle
Synergistic for further analysis of HRSC data.

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MIP OVERLAYS (Common Scale) – EC (mS/m) and HPT Pressure (PSI)
(Pg. 1 of 2)

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(Pg. 2 of 2)

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XSD (µV) and PID (µV)
(Pg. 1 of 2)
- Corresponding PID/XSD responses indicating presence of halogenated compounds.

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(Pg. 2 of 2)
- Corresponding PID/XSD responses indicating presence of halogenated compounds.
Largest XSD responses of this investigation:

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XSD (µV) and EC (mS/m)
(Pg. 1 of 2)

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Pg (2 of 2)

Potential relationship between lithology
and presence of halogenated compounds

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XSD (µV) and HPT Pressure (psi)
Pg (1 of 2)

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Pg (2 of 2)

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MIP CROSS SECTION MAP

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MIP CROSS SECTIONS A - A’
EC (mS/m) With XSD (µV)

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XSD (µV) With PID (µV)

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MIP CROSS SECTIONS B - B’
EC (mS/m) With XSD (µV)

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XSD (µV) With PID (µV)
Note: The PID scale above has been adjusted to enlarge the responses seen in MIP-06 and MIP-01.
As a result, the large response seen in MIP-03 is clipped. The magnitude of that response is 4.69e5.

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NEXT STEPS

For further data please refer back to the individual logs, daily reports, and overlays. For
additional explanations on your project, we would like to present via webinar or in person.
Eagle Synergistic specializes in 3D visualizations, we are happy to complete 3D models to help
visualize lithology, hydrogeologic and contaminant properties.
For the next step please send additional soil and/or groundwater samples and we will correlate
with the MIP data completed on site. We are happy to include correlation sampling data within
the presentation.

From all of us at Eagle Synergistic, we look forward to working with you again!

Site Characterization Report
SLC Station Center | Salt Lake City, Utah
April 18, 2023 | Terracon Project No. 61217142
Facilities |Environmental | Geotechnical | Materials 4
APPENDIX D
Laboratory Reports
ANALYTICAL REPORT
January 18, 2023
Terracon - Salt Lake City, UT
Sample Delivery Group:L1576151
Samples Received:01/14/2023
Project Number:61217142-4.4
Description:WRR/SLC Station
Report To:Daniel Dean
6949 South High Tech Drive
Midvale, UT 84047
Entire Report Reviewed By:
January 18, 2023
[Preliminary Report]
Chris Ward
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be
reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace
Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and
ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided,
and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 1 of 24
January 18, 2023
Chris Ward
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 1 of 24
TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
MW-1 L1576151-01 5
MW-3 L1576151-02 7
MW-4 L1576151-03 9
MW-5 L1576151-04 11
DUP-1 L1576151-05 13
TB L1576151-06 15
Qc: Quality Control Summary 17
Volatile Organic Compounds (GC/MS) by Method 8260B 17
Gl: Glossary of Terms 22
Al: Accreditations & Locations 23
Sc: Sample Chain of Custody 24
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-1 L1576151-01 GW Emma Rodgers 01/12/23 11:30 01/14/23 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG1989060 1 01/15/23 21:51 01/15/23 21:51 JAH Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG1990087 20 01/17/23 17:59 01/17/23 17:59 ADM Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-3 L1576151-02 GW Emma Rodgers 01/12/23 13:00 01/14/23 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG1989060 1 01/15/23 22:12 01/15/23 22:12 JAH Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG1990087 50 01/17/23 18:21 01/17/23 18:21 ADM Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-4 L1576151-03 GW Emma Rodgers 01/12/23 14:15 01/14/23 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG1989060 1 01/15/23 22:32 01/15/23 22:32 JAH Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG1990087 1 01/17/23 16:10 01/17/23 16:10 ADM Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-5 L1576151-04 GW Emma Rodgers 01/12/23 15:05 01/14/23 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG1989060 1 01/15/23 22:53 01/15/23 22:53 JAH Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG1990087 1 01/17/23 16:32 01/17/23 16:32 ADM Mt. Juliet, TN
Collected by Collected date/time Received date/time
DUP-1 L1576151-05 GW Emma Rodgers 01/12/23 09:00 01/14/23 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG1989060 1 01/15/23 23:14 01/15/23 23:14 JAH Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG1990087 20 01/17/23 18:43 01/17/23 18:43 ADM Mt. Juliet, TN
Collected by Collected date/time Received date/time
TB L1576151-06 GW Emma Rodgers 01/12/23 00:00 01/14/23 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG1989060 1 01/15/23 17:23 01/15/23 17:23 JAH Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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CASE NARRATIVE
Unless qualified or notated within the narrative below, all sample aliquots were received at the correct
temperature, in the proper containers, with the appropriate preservatives, and within method specified
holding times. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental
samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality
Control are within established criteria except where addressed in this case narrative, a
non-conformance form or properly qualified within the sample results. By my digital signature below, I
affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the
potential to affect the quality of the data have been identified by the laboratory, and no information or
data have been knowingly withheld that would affect the quality of the data.
[Preliminary Report]
Chris Ward
Project Manager
Volatile Organic Compounds (GC/MS) by Method 8260B
The associated batch QC was above the established quality control range for accuracy.
Batch Lab Sample ID Analytes
WG1989060 (LCS) R3881772-1, (LCSD) R3881772-2,
L1576151-01, 02, 03, 04, 05, 06
Chloromethane
WG1990087 (LCSD) R3882054-2, L1576151-01, 02,
03, 04, 05
Tetrachloroethene
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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Chris Ward
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 01
L1576151
MW-1
Collected date/time: 01/12/23 11:30
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
Acetone U 0.0113 0.0500 1 01/15/2023 21:51 WG1989060
Acrolein U 0.00254 0.0500 1 01/15/2023 21:51 WG1989060
Acrylonitrile U 0.000671 0.0100 1 01/15/2023 21:51 WG1989060
Benzene 0.000141 J 0.0000941 0.00100 1 01/15/2023 21:51 WG1989060
Bromobenzene U 0.000118 0.00100 1 01/15/2023 21:51 WG1989060
Bromodichloromethane U 0.000136 0.00100 1 01/15/2023 21:51 WG1989060
Bromoform U 0.000129 0.00100 1 01/15/2023 21:51 WG1989060
Bromomethane U 0.000605 0.00500 1 01/15/2023 21:51 WG1989060
n-Butylbenzene U 0.000157 0.00100 1 01/15/2023 21:51 WG1989060
sec-Butylbenzene U 0.000125 0.00100 1 01/15/2023 21:51 WG1989060
tert-Butylbenzene U 0.000127 0.00100 1 01/15/2023 21:51 WG1989060
Carbon tetrachloride U 0.000128 0.00100 1 01/15/2023 21:51 WG1989060
Chlorobenzene U 0.000116 0.00100 1 01/15/2023 21:51 WG1989060
Chlorodibromomethane U 0.000140 0.00100 1 01/15/2023 21:51 WG1989060
Chloroethane U 0.000192 0.00500 1 01/15/2023 21:51 WG1989060
2-Chloroethyl vinyl ether U 0.000575 0.0500 1 01/15/2023 21:51 WG1989060
Chloroform U 0.000111 0.00500 1 01/15/2023 21:51 WG1989060
Chloromethane U J4 0.000960 0.00250 1 01/15/2023 21:51 WG1989060
2-Chlorotoluene U 0.000106 0.00100 1 01/15/2023 21:51 WG1989060
4-Chlorotoluene U 0.000114 0.00100 1 01/15/2023 21:51 WG1989060
1,2-Dibromo-3-Chloropropane U 0.000276 0.00500 1 01/15/2023 21:51 WG1989060
1,2-Dibromoethane U 0.000126 0.00100 1 01/15/2023 21:51 WG1989060
Dibromomethane U 0.000122 0.00100 1 01/15/2023 21:51 WG1989060
1,2-Dichlorobenzene U 0.000107 0.00100 1 01/15/2023 21:51 WG1989060
1,3-Dichlorobenzene U 0.000110 0.00100 1 01/15/2023 21:51 WG1989060
1,4-Dichlorobenzene U 0.000120 0.00100 1 01/15/2023 21:51 WG1989060
Dichlorodifluoromethane U 0.000374 0.00500 1 01/15/2023 21:51 WG1989060
1,1-Dichloroethane U 0.000100 0.00100 1 01/15/2023 21:51 WG1989060
1,2-Dichloroethane U 0.0000819 0.00100 1 01/15/2023 21:51 WG1989060
1,1-Dichloroethene 0.000349 J 0.000188 0.00100 1 01/15/2023 21:51 WG1989060
cis-1,2-Dichloroethene 0.393 0.00252 0.0200 20 01/17/2023 17:59 WG1990087
trans-1,2-Dichloroethene 0.00715 0.000149 0.00100 1 01/15/2023 21:51 WG1989060
1,2-Dichloropropane U 0.000149 0.00100 1 01/15/2023 21:51 WG1989060
1,1-Dichloropropene U 0.000142 0.00100 1 01/15/2023 21:51 WG1989060
1,3-Dichloropropane U 0.000110 0.00100 1 01/15/2023 21:51 WG1989060
cis-1,3-Dichloropropene U 0.000111 0.00100 1 01/15/2023 21:51 WG1989060
trans-1,3-Dichloropropene U 0.000118 0.00100 1 01/15/2023 21:51 WG1989060
2,2-Dichloropropane U 0.000161 0.00100 1 01/15/2023 21:51 WG1989060
Di-isopropyl ether U 0.000105 0.00100 1 01/15/2023 21:51 WG1989060
Ethylbenzene U 0.000137 0.00100 1 01/15/2023 21:51 WG1989060
Hexachloro-1,3-butadiene U 0.000337 0.00100 1 01/15/2023 21:51 WG1989060
Isopropylbenzene U 0.000105 0.00100 1 01/15/2023 21:51 WG1989060
p-Isopropyltoluene U 0.000120 0.00100 1 01/15/2023 21:51 WG1989060
2-Butanone (MEK)U 0.00119 0.0100 1 01/15/2023 21:51 WG1989060
Methylene Chloride U 0.000430 0.00500 1 01/15/2023 21:51 WG1989060
4-Methyl-2-pentanone (MIBK)U 0.000478 0.0100 1 01/15/2023 21:51 WG1989060
Methyl tert-butyl ether U 0.000101 0.00100 1 01/15/2023 21:51 WG1989060
Naphthalene U 0.00100 0.00500 1 01/15/2023 21:51 WG1989060
n-Propylbenzene U 0.0000993 0.00100 1 01/15/2023 21:51 WG1989060
Styrene U 0.000118 0.00100 1 01/15/2023 21:51 WG1989060
1,1,1,2-Tetrachloroethane U 0.000147 0.00100 1 01/15/2023 21:51 WG1989060
1,1,2,2-Tetrachloroethane U 0.000133 0.00100 1 01/15/2023 21:51 WG1989060
1,1,2-Trichlorotrifluoroethane U 0.000180 0.00100 1 01/15/2023 21:51 WG1989060
Tetrachloroethene 1.10 J4 0.00600 0.0200 20 01/17/2023 17:59 WG1990087
Toluene U 0.000278 0.00100 1 01/15/2023 21:51 WG1989060
1,2,3-Trichlorobenzene U 0.000230 0.00100 1 01/15/2023 21:51 WG1989060
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 01
L1576151
MW-1
Collected date/time: 01/12/23 11:30
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
1,2,4-Trichlorobenzene U 0.000481 0.00100 1 01/15/2023 21:51 WG1989060
1,1,1-Trichloroethane U 0.000149 0.00100 1 01/15/2023 21:51 WG1989060
1,1,2-Trichloroethane U 0.000158 0.00100 1 01/15/2023 21:51 WG1989060
Trichloroethene 0.221 0.00380 0.0200 20 01/17/2023 17:59 WG1990087
Trichlorofluoromethane U 0.000160 0.00500 1 01/15/2023 21:51 WG1989060
1,2,3-Trichloropropane U 0.000237 0.00250 1 01/15/2023 21:51 WG1989060
1,2,4-Trimethylbenzene U 0.000322 0.00100 1 01/15/2023 21:51 WG1989060
1,2,3-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 21:51 WG1989060
1,3,5-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 21:51 WG1989060
Vinyl chloride 0.00456 0.000234 0.00100 1 01/15/2023 21:51 WG1989060
Xylenes, Total U 0.000174 0.00300 1 01/15/2023 21:51 WG1989060
(S) Toluene-d8 108 80.0-120 01/15/2023 21:51 WG1989060
(S) Toluene-d8 106 80.0-120 01/17/2023 17:59 WG1990087
(S) 4-Bromofluorobenzene 103 77.0-126 01/15/2023 21:51 WG1989060
(S) 4-Bromofluorobenzene 94.1 77.0-126 01/17/2023 17:59 WG1990087
(S) 1,2-Dichloroethane-d4 90.6 70.0-130 01/15/2023 21:51 WG1989060
(S) 1,2-Dichloroethane-d4 89.9 70.0-130 01/17/2023 17:59 WG1990087
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 6 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 6 of 24
SAMPLE RESULTS - 02
L1576151
MW-3
Collected date/time: 01/12/23 13:00
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
Acetone U 0.0113 0.0500 1 01/15/2023 22:12 WG1989060
Acrolein U 0.00254 0.0500 1 01/15/2023 22:12 WG1989060
Acrylonitrile U 0.000671 0.0100 1 01/15/2023 22:12 WG1989060
Benzene 0.000134 J 0.0000941 0.00100 1 01/15/2023 22:12 WG1989060
Bromobenzene U 0.000118 0.00100 1 01/15/2023 22:12 WG1989060
Bromodichloromethane U 0.000136 0.00100 1 01/15/2023 22:12 WG1989060
Bromoform U 0.000129 0.00100 1 01/15/2023 22:12 WG1989060
Bromomethane U 0.000605 0.00500 1 01/15/2023 22:12 WG1989060
n-Butylbenzene U 0.000157 0.00100 1 01/15/2023 22:12 WG1989060
sec-Butylbenzene U 0.000125 0.00100 1 01/15/2023 22:12 WG1989060
tert-Butylbenzene U 0.000127 0.00100 1 01/15/2023 22:12 WG1989060
Carbon tetrachloride U 0.000128 0.00100 1 01/15/2023 22:12 WG1989060
Chlorobenzene U 0.000116 0.00100 1 01/15/2023 22:12 WG1989060
Chlorodibromomethane U 0.000140 0.00100 1 01/15/2023 22:12 WG1989060
Chloroethane U 0.000192 0.00500 1 01/15/2023 22:12 WG1989060
2-Chloroethyl vinyl ether U 0.000575 0.0500 1 01/15/2023 22:12 WG1989060
Chloroform U 0.000111 0.00500 1 01/15/2023 22:12 WG1989060
Chloromethane U J4 0.000960 0.00250 1 01/15/2023 22:12 WG1989060
2-Chlorotoluene U 0.000106 0.00100 1 01/15/2023 22:12 WG1989060
4-Chlorotoluene U 0.000114 0.00100 1 01/15/2023 22:12 WG1989060
1,2-Dibromo-3-Chloropropane U 0.000276 0.00500 1 01/15/2023 22:12 WG1989060
1,2-Dibromoethane U 0.000126 0.00100 1 01/15/2023 22:12 WG1989060
Dibromomethane U 0.000122 0.00100 1 01/15/2023 22:12 WG1989060
1,2-Dichlorobenzene U 0.000107 0.00100 1 01/15/2023 22:12 WG1989060
1,3-Dichlorobenzene U 0.000110 0.00100 1 01/15/2023 22:12 WG1989060
1,4-Dichlorobenzene U 0.000120 0.00100 1 01/15/2023 22:12 WG1989060
Dichlorodifluoromethane U 0.000374 0.00500 1 01/15/2023 22:12 WG1989060
1,1-Dichloroethane 0.000238 J 0.000100 0.00100 1 01/15/2023 22:12 WG1989060
1,2-Dichloroethane U 0.0000819 0.00100 1 01/15/2023 22:12 WG1989060
1,1-Dichloroethene 0.00265 0.000188 0.00100 1 01/15/2023 22:12 WG1989060
cis-1,2-Dichloroethene 1.27 0.00630 0.0500 50 01/17/2023 18:21 WG1990087
trans-1,2-Dichloroethene 0.0152 0.000149 0.00100 1 01/15/2023 22:12 WG1989060
1,2-Dichloropropane U 0.000149 0.00100 1 01/15/2023 22:12 WG1989060
1,1-Dichloropropene U 0.000142 0.00100 1 01/15/2023 22:12 WG1989060
1,3-Dichloropropane U 0.000110 0.00100 1 01/15/2023 22:12 WG1989060
cis-1,3-Dichloropropene U 0.000111 0.00100 1 01/15/2023 22:12 WG1989060
trans-1,3-Dichloropropene U 0.000118 0.00100 1 01/15/2023 22:12 WG1989060
2,2-Dichloropropane U 0.000161 0.00100 1 01/15/2023 22:12 WG1989060
Di-isopropyl ether U 0.000105 0.00100 1 01/15/2023 22:12 WG1989060
Ethylbenzene U 0.000137 0.00100 1 01/15/2023 22:12 WG1989060
Hexachloro-1,3-butadiene U 0.000337 0.00100 1 01/15/2023 22:12 WG1989060
Isopropylbenzene U 0.000105 0.00100 1 01/15/2023 22:12 WG1989060
p-Isopropyltoluene U 0.000120 0.00100 1 01/15/2023 22:12 WG1989060
2-Butanone (MEK)U 0.00119 0.0100 1 01/15/2023 22:12 WG1989060
Methylene Chloride U 0.000430 0.00500 1 01/15/2023 22:12 WG1989060
4-Methyl-2-pentanone (MIBK)U 0.000478 0.0100 1 01/15/2023 22:12 WG1989060
Methyl tert-butyl ether U 0.000101 0.00100 1 01/15/2023 22:12 WG1989060
Naphthalene U 0.00100 0.00500 1 01/15/2023 22:12 WG1989060
n-Propylbenzene U 0.0000993 0.00100 1 01/15/2023 22:12 WG1989060
Styrene U 0.000118 0.00100 1 01/15/2023 22:12 WG1989060
1,1,1,2-Tetrachloroethane U 0.000147 0.00100 1 01/15/2023 22:12 WG1989060
1,1,2,2-Tetrachloroethane U 0.000133 0.00100 1 01/15/2023 22:12 WG1989060
1,1,2-Trichlorotrifluoroethane U 0.000180 0.00100 1 01/15/2023 22:12 WG1989060
Tetrachloroethene 0.380 J4 0.0150 0.0500 50 01/17/2023 18:21 WG1990087
Toluene U 0.000278 0.00100 1 01/15/2023 22:12 WG1989060
1,2,3-Trichlorobenzene U 0.000230 0.00100 1 01/15/2023 22:12 WG1989060
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 7 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 7 of 24
SAMPLE RESULTS - 02
L1576151
MW-3
Collected date/time: 01/12/23 13:00
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
1,2,4-Trichlorobenzene U 0.000481 0.00100 1 01/15/2023 22:12 WG1989060
1,1,1-Trichloroethane U 0.000149 0.00100 1 01/15/2023 22:12 WG1989060
1,1,2-Trichloroethane U 0.000158 0.00100 1 01/15/2023 22:12 WG1989060
Trichloroethene 1.82 0.00950 0.0500 50 01/17/2023 18:21 WG1990087
Trichlorofluoromethane U 0.000160 0.00500 1 01/15/2023 22:12 WG1989060
1,2,3-Trichloropropane U 0.000237 0.00250 1 01/15/2023 22:12 WG1989060
1,2,4-Trimethylbenzene U 0.000322 0.00100 1 01/15/2023 22:12 WG1989060
1,2,3-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 22:12 WG1989060
1,3,5-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 22:12 WG1989060
Vinyl chloride 0.00672 0.000234 0.00100 1 01/15/2023 22:12 WG1989060
Xylenes, Total U 0.000174 0.00300 1 01/15/2023 22:12 WG1989060
(S) Toluene-d8 107 80.0-120 01/15/2023 22:12 WG1989060
(S) Toluene-d8 108 80.0-120 01/17/2023 18:21 WG1990087
(S) 4-Bromofluorobenzene 102 77.0-126 01/15/2023 22:12 WG1989060
(S) 4-Bromofluorobenzene 96.0 77.0-126 01/17/2023 18:21 WG1990087
(S) 1,2-Dichloroethane-d4 92.1 70.0-130 01/15/2023 22:12 WG1989060
(S) 1,2-Dichloroethane-d4 89.8 70.0-130 01/17/2023 18:21 WG1990087
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 8 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 8 of 24
SAMPLE RESULTS - 03
L1576151
MW-4
Collected date/time: 01/12/23 14:15
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
Acetone U 0.0113 0.0500 1 01/15/2023 22:32 WG1989060
Acrolein U 0.00254 0.0500 1 01/15/2023 22:32 WG1989060
Acrylonitrile U 0.000671 0.0100 1 01/15/2023 22:32 WG1989060
Benzene U 0.0000941 0.00100 1 01/15/2023 22:32 WG1989060
Bromobenzene U 0.000118 0.00100 1 01/15/2023 22:32 WG1989060
Bromodichloromethane U 0.000136 0.00100 1 01/15/2023 22:32 WG1989060
Bromoform U 0.000129 0.00100 1 01/15/2023 22:32 WG1989060
Bromomethane U 0.000605 0.00500 1 01/15/2023 22:32 WG1989060
n-Butylbenzene U 0.000157 0.00100 1 01/15/2023 22:32 WG1989060
sec-Butylbenzene U 0.000125 0.00100 1 01/15/2023 22:32 WG1989060
tert-Butylbenzene U 0.000127 0.00100 1 01/15/2023 22:32 WG1989060
Carbon tetrachloride U 0.000128 0.00100 1 01/15/2023 22:32 WG1989060
Chlorobenzene U 0.000116 0.00100 1 01/15/2023 22:32 WG1989060
Chlorodibromomethane U 0.000140 0.00100 1 01/15/2023 22:32 WG1989060
Chloroethane U 0.000192 0.00500 1 01/15/2023 22:32 WG1989060
2-Chloroethyl vinyl ether U 0.000575 0.0500 1 01/15/2023 22:32 WG1989060
Chloroform U 0.000111 0.00500 1 01/15/2023 22:32 WG1989060
Chloromethane U J4 0.000960 0.00250 1 01/15/2023 22:32 WG1989060
2-Chlorotoluene U 0.000106 0.00100 1 01/15/2023 22:32 WG1989060
4-Chlorotoluene U 0.000114 0.00100 1 01/15/2023 22:32 WG1989060
1,2-Dibromo-3-Chloropropane U 0.000276 0.00500 1 01/15/2023 22:32 WG1989060
1,2-Dibromoethane U 0.000126 0.00100 1 01/15/2023 22:32 WG1989060
Dibromomethane U 0.000122 0.00100 1 01/15/2023 22:32 WG1989060
1,2-Dichlorobenzene U 0.000107 0.00100 1 01/15/2023 22:32 WG1989060
1,3-Dichlorobenzene U 0.000110 0.00100 1 01/15/2023 22:32 WG1989060
1,4-Dichlorobenzene U 0.000120 0.00100 1 01/15/2023 22:32 WG1989060
Dichlorodifluoromethane U 0.000374 0.00500 1 01/15/2023 22:32 WG1989060
1,1-Dichloroethane U 0.000100 0.00100 1 01/15/2023 22:32 WG1989060
1,2-Dichloroethane U 0.0000819 0.00100 1 01/15/2023 22:32 WG1989060
1,1-Dichloroethene U 0.000188 0.00100 1 01/15/2023 22:32 WG1989060
cis-1,2-Dichloroethene 0.000308 J 0.000126 0.00100 1 01/17/2023 16:10 WG1990087
trans-1,2-Dichloroethene U 0.000149 0.00100 1 01/15/2023 22:32 WG1989060
1,2-Dichloropropane U 0.000149 0.00100 1 01/15/2023 22:32 WG1989060
1,1-Dichloropropene U 0.000142 0.00100 1 01/15/2023 22:32 WG1989060
1,3-Dichloropropane U 0.000110 0.00100 1 01/15/2023 22:32 WG1989060
cis-1,3-Dichloropropene U 0.000111 0.00100 1 01/15/2023 22:32 WG1989060
trans-1,3-Dichloropropene U 0.000118 0.00100 1 01/15/2023 22:32 WG1989060
2,2-Dichloropropane U 0.000161 0.00100 1 01/15/2023 22:32 WG1989060
Di-isopropyl ether U 0.000105 0.00100 1 01/15/2023 22:32 WG1989060
Ethylbenzene U 0.000137 0.00100 1 01/15/2023 22:32 WG1989060
Hexachloro-1,3-butadiene U 0.000337 0.00100 1 01/15/2023 22:32 WG1989060
Isopropylbenzene U 0.000105 0.00100 1 01/15/2023 22:32 WG1989060
p-Isopropyltoluene U 0.000120 0.00100 1 01/15/2023 22:32 WG1989060
2-Butanone (MEK)U 0.00119 0.0100 1 01/15/2023 22:32 WG1989060
Methylene Chloride U 0.000430 0.00500 1 01/15/2023 22:32 WG1989060
4-Methyl-2-pentanone (MIBK)U 0.000478 0.0100 1 01/15/2023 22:32 WG1989060
Methyl tert-butyl ether U 0.000101 0.00100 1 01/15/2023 22:32 WG1989060
Naphthalene U 0.00100 0.00500 1 01/15/2023 22:32 WG1989060
n-Propylbenzene U 0.0000993 0.00100 1 01/15/2023 22:32 WG1989060
Styrene U 0.000118 0.00100 1 01/15/2023 22:32 WG1989060
1,1,1,2-Tetrachloroethane U 0.000147 0.00100 1 01/15/2023 22:32 WG1989060
1,1,2,2-Tetrachloroethane U 0.000133 0.00100 1 01/15/2023 22:32 WG1989060
1,1,2-Trichlorotrifluoroethane U 0.000180 0.00100 1 01/15/2023 22:32 WG1989060
Tetrachloroethene 0.00178 J4 0.000300 0.00100 1 01/17/2023 16:10 WG1990087
Toluene U 0.000278 0.00100 1 01/15/2023 22:32 WG1989060
1,2,3-Trichlorobenzene U 0.000230 0.00100 1 01/15/2023 22:32 WG1989060
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 9 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 9 of 24
SAMPLE RESULTS - 03
L1576151
MW-4
Collected date/time: 01/12/23 14:15
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
1,2,4-Trichlorobenzene U 0.000481 0.00100 1 01/15/2023 22:32 WG1989060
1,1,1-Trichloroethane U 0.000149 0.00100 1 01/15/2023 22:32 WG1989060
1,1,2-Trichloroethane U 0.000158 0.00100 1 01/15/2023 22:32 WG1989060
Trichloroethene 0.000473 J 0.000190 0.00100 1 01/17/2023 16:10 WG1990087
Trichlorofluoromethane U 0.000160 0.00500 1 01/15/2023 22:32 WG1989060
1,2,3-Trichloropropane U 0.000237 0.00250 1 01/15/2023 22:32 WG1989060
1,2,4-Trimethylbenzene U 0.000322 0.00100 1 01/15/2023 22:32 WG1989060
1,2,3-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 22:32 WG1989060
1,3,5-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 22:32 WG1989060
Vinyl chloride 0.00136 0.000234 0.00100 1 01/15/2023 22:32 WG1989060
Xylenes, Total U 0.000174 0.00300 1 01/15/2023 22:32 WG1989060
(S) Toluene-d8 107 80.0-120 01/15/2023 22:32 WG1989060
(S) Toluene-d8 106 80.0-120 01/17/2023 16:10 WG1990087
(S) 4-Bromofluorobenzene 102 77.0-126 01/15/2023 22:32 WG1989060
(S) 4-Bromofluorobenzene 96.9 77.0-126 01/17/2023 16:10 WG1990087
(S) 1,2-Dichloroethane-d4 91.9 70.0-130 01/15/2023 22:32 WG1989060
(S) 1,2-Dichloroethane-d4 90.1 70.0-130 01/17/2023 16:10 WG1990087
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 10 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 10 of 24
SAMPLE RESULTS - 04
L1576151
MW-5
Collected date/time: 01/12/23 15:05
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
Acetone U 0.0113 0.0500 1 01/15/2023 22:53 WG1989060
Acrolein U 0.00254 0.0500 1 01/15/2023 22:53 WG1989060
Acrylonitrile U 0.000671 0.0100 1 01/15/2023 22:53 WG1989060
Benzene U 0.0000941 0.00100 1 01/15/2023 22:53 WG1989060
Bromobenzene U 0.000118 0.00100 1 01/15/2023 22:53 WG1989060
Bromodichloromethane U 0.000136 0.00100 1 01/15/2023 22:53 WG1989060
Bromoform U 0.000129 0.00100 1 01/15/2023 22:53 WG1989060
Bromomethane U 0.000605 0.00500 1 01/15/2023 22:53 WG1989060
n-Butylbenzene U 0.000157 0.00100 1 01/15/2023 22:53 WG1989060
sec-Butylbenzene U 0.000125 0.00100 1 01/15/2023 22:53 WG1989060
tert-Butylbenzene U 0.000127 0.00100 1 01/15/2023 22:53 WG1989060
Carbon tetrachloride U 0.000128 0.00100 1 01/15/2023 22:53 WG1989060
Chlorobenzene U 0.000116 0.00100 1 01/15/2023 22:53 WG1989060
Chlorodibromomethane U 0.000140 0.00100 1 01/15/2023 22:53 WG1989060
Chloroethane U 0.000192 0.00500 1 01/15/2023 22:53 WG1989060
2-Chloroethyl vinyl ether U 0.000575 0.0500 1 01/15/2023 22:53 WG1989060
Chloroform U 0.000111 0.00500 1 01/15/2023 22:53 WG1989060
Chloromethane U J4 0.000960 0.00250 1 01/15/2023 22:53 WG1989060
2-Chlorotoluene U 0.000106 0.00100 1 01/15/2023 22:53 WG1989060
4-Chlorotoluene U 0.000114 0.00100 1 01/15/2023 22:53 WG1989060
1,2-Dibromo-3-Chloropropane U 0.000276 0.00500 1 01/15/2023 22:53 WG1989060
1,2-Dibromoethane U 0.000126 0.00100 1 01/15/2023 22:53 WG1989060
Dibromomethane U 0.000122 0.00100 1 01/15/2023 22:53 WG1989060
1,2-Dichlorobenzene U 0.000107 0.00100 1 01/15/2023 22:53 WG1989060
1,3-Dichlorobenzene U 0.000110 0.00100 1 01/15/2023 22:53 WG1989060
1,4-Dichlorobenzene U 0.000120 0.00100 1 01/15/2023 22:53 WG1989060
Dichlorodifluoromethane U 0.000374 0.00500 1 01/15/2023 22:53 WG1989060
1,1-Dichloroethane U 0.000100 0.00100 1 01/15/2023 22:53 WG1989060
1,2-Dichloroethane U 0.0000819 0.00100 1 01/15/2023 22:53 WG1989060
1,1-Dichloroethene 0.000299 J 0.000188 0.00100 1 01/15/2023 22:53 WG1989060
cis-1,2-Dichloroethene 0.0412 0.000126 0.00100 1 01/15/2023 22:53 WG1989060
trans-1,2-Dichloroethene 0.00184 0.000149 0.00100 1 01/15/2023 22:53 WG1989060
1,2-Dichloropropane U 0.000149 0.00100 1 01/15/2023 22:53 WG1989060
1,1-Dichloropropene U 0.000142 0.00100 1 01/15/2023 22:53 WG1989060
1,3-Dichloropropane U 0.000110 0.00100 1 01/15/2023 22:53 WG1989060
cis-1,3-Dichloropropene U 0.000111 0.00100 1 01/15/2023 22:53 WG1989060
trans-1,3-Dichloropropene U 0.000118 0.00100 1 01/15/2023 22:53 WG1989060
2,2-Dichloropropane U 0.000161 0.00100 1 01/15/2023 22:53 WG1989060
Di-isopropyl ether U 0.000105 0.00100 1 01/15/2023 22:53 WG1989060
Ethylbenzene U 0.000137 0.00100 1 01/15/2023 22:53 WG1989060
Hexachloro-1,3-butadiene U 0.000337 0.00100 1 01/15/2023 22:53 WG1989060
Isopropylbenzene U 0.000105 0.00100 1 01/15/2023 22:53 WG1989060
p-Isopropyltoluene U 0.000120 0.00100 1 01/15/2023 22:53 WG1989060
2-Butanone (MEK)U 0.00119 0.0100 1 01/15/2023 22:53 WG1989060
Methylene Chloride U 0.000430 0.00500 1 01/15/2023 22:53 WG1989060
4-Methyl-2-pentanone (MIBK)U 0.000478 0.0100 1 01/15/2023 22:53 WG1989060
Methyl tert-butyl ether U 0.000101 0.00100 1 01/15/2023 22:53 WG1989060
Naphthalene U 0.00100 0.00500 1 01/15/2023 22:53 WG1989060
n-Propylbenzene U 0.0000993 0.00100 1 01/15/2023 22:53 WG1989060
Styrene U 0.000118 0.00100 1 01/15/2023 22:53 WG1989060
1,1,1,2-Tetrachloroethane U 0.000147 0.00100 1 01/15/2023 22:53 WG1989060
1,1,2,2-Tetrachloroethane U 0.000133 0.00100 1 01/15/2023 22:53 WG1989060
1,1,2-Trichlorotrifluoroethane U 0.000180 0.00100 1 01/15/2023 22:53 WG1989060
Tetrachloroethene 0.000659 J J4 0.000300 0.00100 1 01/17/2023 16:32 WG1990087
Toluene U 0.000278 0.00100 1 01/15/2023 22:53 WG1989060
1,2,3-Trichlorobenzene U 0.000230 0.00100 1 01/15/2023 22:53 WG1989060
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 11 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 11 of 24
SAMPLE RESULTS - 04
L1576151
MW-5
Collected date/time: 01/12/23 15:05
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
1,2,4-Trichlorobenzene U 0.000481 0.00100 1 01/15/2023 22:53 WG1989060
1,1,1-Trichloroethane U 0.000149 0.00100 1 01/15/2023 22:53 WG1989060
1,1,2-Trichloroethane U 0.000158 0.00100 1 01/15/2023 22:53 WG1989060
Trichloroethene 0.00141 0.000190 0.00100 1 01/17/2023 16:32 WG1990087
Trichlorofluoromethane U 0.000160 0.00500 1 01/15/2023 22:53 WG1989060
1,2,3-Trichloropropane U 0.000237 0.00250 1 01/15/2023 22:53 WG1989060
1,2,4-Trimethylbenzene U 0.000322 0.00100 1 01/15/2023 22:53 WG1989060
1,2,3-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 22:53 WG1989060
1,3,5-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 22:53 WG1989060
Vinyl chloride 0.00659 0.000234 0.00100 1 01/15/2023 22:53 WG1989060
Xylenes, Total U 0.000174 0.00300 1 01/15/2023 22:53 WG1989060
(S) Toluene-d8 108 80.0-120 01/15/2023 22:53 WG1989060
(S) Toluene-d8 107 80.0-120 01/17/2023 16:32 WG1990087
(S) 4-Bromofluorobenzene 103 77.0-126 01/15/2023 22:53 WG1989060
(S) 4-Bromofluorobenzene 100 77.0-126 01/17/2023 16:32 WG1990087
(S) 1,2-Dichloroethane-d4 91.1 70.0-130 01/15/2023 22:53 WG1989060
(S) 1,2-Dichloroethane-d4 86.2 70.0-130 01/17/2023 16:32 WG1990087
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 12 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 12 of 24
SAMPLE RESULTS - 05
L1576151
DUP-1
Collected date/time: 01/12/23 09:00
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
Acetone U 0.0113 0.0500 1 01/15/2023 23:14 WG1989060
Acrolein U 0.00254 0.0500 1 01/15/2023 23:14 WG1989060
Acrylonitrile U 0.000671 0.0100 1 01/15/2023 23:14 WG1989060
Benzene 0.000150 J 0.0000941 0.00100 1 01/15/2023 23:14 WG1989060
Bromobenzene U 0.000118 0.00100 1 01/15/2023 23:14 WG1989060
Bromodichloromethane U 0.000136 0.00100 1 01/15/2023 23:14 WG1989060
Bromoform U 0.000129 0.00100 1 01/15/2023 23:14 WG1989060
Bromomethane U 0.000605 0.00500 1 01/15/2023 23:14 WG1989060
n-Butylbenzene U 0.000157 0.00100 1 01/15/2023 23:14 WG1989060
sec-Butylbenzene U 0.000125 0.00100 1 01/15/2023 23:14 WG1989060
tert-Butylbenzene U 0.000127 0.00100 1 01/15/2023 23:14 WG1989060
Carbon tetrachloride U 0.000128 0.00100 1 01/15/2023 23:14 WG1989060
Chlorobenzene U 0.000116 0.00100 1 01/15/2023 23:14 WG1989060
Chlorodibromomethane U 0.000140 0.00100 1 01/15/2023 23:14 WG1989060
Chloroethane U 0.000192 0.00500 1 01/15/2023 23:14 WG1989060
2-Chloroethyl vinyl ether U 0.000575 0.0500 1 01/15/2023 23:14 WG1989060
Chloroform U 0.000111 0.00500 1 01/15/2023 23:14 WG1989060
Chloromethane U J4 0.000960 0.00250 1 01/15/2023 23:14 WG1989060
2-Chlorotoluene U 0.000106 0.00100 1 01/15/2023 23:14 WG1989060
4-Chlorotoluene U 0.000114 0.00100 1 01/15/2023 23:14 WG1989060
1,2-Dibromo-3-Chloropropane U 0.000276 0.00500 1 01/15/2023 23:14 WG1989060
1,2-Dibromoethane U 0.000126 0.00100 1 01/15/2023 23:14 WG1989060
Dibromomethane U 0.000122 0.00100 1 01/15/2023 23:14 WG1989060
1,2-Dichlorobenzene U 0.000107 0.00100 1 01/15/2023 23:14 WG1989060
1,3-Dichlorobenzene U 0.000110 0.00100 1 01/15/2023 23:14 WG1989060
1,4-Dichlorobenzene U 0.000120 0.00100 1 01/15/2023 23:14 WG1989060
Dichlorodifluoromethane U 0.000374 0.00500 1 01/15/2023 23:14 WG1989060
1,1-Dichloroethane U 0.000100 0.00100 1 01/15/2023 23:14 WG1989060
1,2-Dichloroethane U 0.0000819 0.00100 1 01/15/2023 23:14 WG1989060
1,1-Dichloroethene 0.000374 J 0.000188 0.00100 1 01/15/2023 23:14 WG1989060
cis-1,2-Dichloroethene 0.362 0.00252 0.0200 20 01/17/2023 18:43 WG1990087
trans-1,2-Dichloroethene 0.00732 0.000149 0.00100 1 01/15/2023 23:14 WG1989060
1,2-Dichloropropane U 0.000149 0.00100 1 01/15/2023 23:14 WG1989060
1,1-Dichloropropene U 0.000142 0.00100 1 01/15/2023 23:14 WG1989060
1,3-Dichloropropane U 0.000110 0.00100 1 01/15/2023 23:14 WG1989060
cis-1,3-Dichloropropene U 0.000111 0.00100 1 01/15/2023 23:14 WG1989060
trans-1,3-Dichloropropene U 0.000118 0.00100 1 01/15/2023 23:14 WG1989060
2,2-Dichloropropane U 0.000161 0.00100 1 01/15/2023 23:14 WG1989060
Di-isopropyl ether U 0.000105 0.00100 1 01/15/2023 23:14 WG1989060
Ethylbenzene U 0.000137 0.00100 1 01/15/2023 23:14 WG1989060
Hexachloro-1,3-butadiene U 0.000337 0.00100 1 01/15/2023 23:14 WG1989060
Isopropylbenzene U 0.000105 0.00100 1 01/15/2023 23:14 WG1989060
p-Isopropyltoluene U 0.000120 0.00100 1 01/15/2023 23:14 WG1989060
2-Butanone (MEK)U 0.00119 0.0100 1 01/15/2023 23:14 WG1989060
Methylene Chloride U 0.000430 0.00500 1 01/15/2023 23:14 WG1989060
4-Methyl-2-pentanone (MIBK)U 0.000478 0.0100 1 01/15/2023 23:14 WG1989060
Methyl tert-butyl ether U 0.000101 0.00100 1 01/15/2023 23:14 WG1989060
Naphthalene U 0.00100 0.00500 1 01/15/2023 23:14 WG1989060
n-Propylbenzene U 0.0000993 0.00100 1 01/15/2023 23:14 WG1989060
Styrene U 0.000118 0.00100 1 01/15/2023 23:14 WG1989060
1,1,1,2-Tetrachloroethane U 0.000147 0.00100 1 01/15/2023 23:14 WG1989060
1,1,2,2-Tetrachloroethane U 0.000133 0.00100 1 01/15/2023 23:14 WG1989060
1,1,2-Trichlorotrifluoroethane U 0.000180 0.00100 1 01/15/2023 23:14 WG1989060
Tetrachloroethene 1.02 J4 0.00600 0.0200 20 01/17/2023 18:43 WG1990087
Toluene U 0.000278 0.00100 1 01/15/2023 23:14 WG1989060
1,2,3-Trichlorobenzene U 0.000230 0.00100 1 01/15/2023 23:14 WG1989060
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 05
L1576151
DUP-1
Collected date/time: 01/12/23 09:00
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
1,2,4-Trichlorobenzene U 0.000481 0.00100 1 01/15/2023 23:14 WG1989060
1,1,1-Trichloroethane U 0.000149 0.00100 1 01/15/2023 23:14 WG1989060
1,1,2-Trichloroethane U 0.000158 0.00100 1 01/15/2023 23:14 WG1989060
Trichloroethene 0.205 0.00380 0.0200 20 01/17/2023 18:43 WG1990087
Trichlorofluoromethane U 0.000160 0.00500 1 01/15/2023 23:14 WG1989060
1,2,3-Trichloropropane U 0.000237 0.00250 1 01/15/2023 23:14 WG1989060
1,2,4-Trimethylbenzene U 0.000322 0.00100 1 01/15/2023 23:14 WG1989060
1,2,3-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 23:14 WG1989060
1,3,5-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 23:14 WG1989060
Vinyl chloride 0.00481 0.000234 0.00100 1 01/15/2023 23:14 WG1989060
Xylenes, Total U 0.000174 0.00300 1 01/15/2023 23:14 WG1989060
(S) Toluene-d8 109 80.0-120 01/15/2023 23:14 WG1989060
(S) Toluene-d8 109 80.0-120 01/17/2023 18:43 WG1990087
(S) 4-Bromofluorobenzene 104 77.0-126 01/15/2023 23:14 WG1989060
(S) 4-Bromofluorobenzene 95.4 77.0-126 01/17/2023 18:43 WG1990087
(S) 1,2-Dichloroethane-d4 91.1 70.0-130 01/15/2023 23:14 WG1989060
(S) 1,2-Dichloroethane-d4 91.1 70.0-130 01/17/2023 18:43 WG1990087
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 14 of 24
SAMPLE RESULTS - 06
L1576151
TB
Collected date/time: 01/12/23 00:00
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
Acetone U 0.0113 0.0500 1 01/15/2023 17:23 WG1989060
Acrolein U 0.00254 0.0500 1 01/15/2023 17:23 WG1989060
Acrylonitrile U 0.000671 0.0100 1 01/15/2023 17:23 WG1989060
Benzene U 0.0000941 0.00100 1 01/15/2023 17:23 WG1989060
Bromobenzene U 0.000118 0.00100 1 01/15/2023 17:23 WG1989060
Bromodichloromethane U 0.000136 0.00100 1 01/15/2023 17:23 WG1989060
Bromoform U 0.000129 0.00100 1 01/15/2023 17:23 WG1989060
Bromomethane U 0.000605 0.00500 1 01/15/2023 17:23 WG1989060
n-Butylbenzene U 0.000157 0.00100 1 01/15/2023 17:23 WG1989060
sec-Butylbenzene U 0.000125 0.00100 1 01/15/2023 17:23 WG1989060
tert-Butylbenzene U 0.000127 0.00100 1 01/15/2023 17:23 WG1989060
Carbon tetrachloride U 0.000128 0.00100 1 01/15/2023 17:23 WG1989060
Chlorobenzene U 0.000116 0.00100 1 01/15/2023 17:23 WG1989060
Chlorodibromomethane U 0.000140 0.00100 1 01/15/2023 17:23 WG1989060
Chloroethane U 0.000192 0.00500 1 01/15/2023 17:23 WG1989060
2-Chloroethyl vinyl ether U 0.000575 0.0500 1 01/15/2023 17:23 WG1989060
Chloroform U 0.000111 0.00500 1 01/15/2023 17:23 WG1989060
Chloromethane U J4 0.000960 0.00250 1 01/15/2023 17:23 WG1989060
2-Chlorotoluene U 0.000106 0.00100 1 01/15/2023 17:23 WG1989060
4-Chlorotoluene U 0.000114 0.00100 1 01/15/2023 17:23 WG1989060
1,2-Dibromo-3-Chloropropane U 0.000276 0.00500 1 01/15/2023 17:23 WG1989060
1,2-Dibromoethane U 0.000126 0.00100 1 01/15/2023 17:23 WG1989060
Dibromomethane U 0.000122 0.00100 1 01/15/2023 17:23 WG1989060
1,2-Dichlorobenzene U 0.000107 0.00100 1 01/15/2023 17:23 WG1989060
1,3-Dichlorobenzene U 0.000110 0.00100 1 01/15/2023 17:23 WG1989060
1,4-Dichlorobenzene U 0.000120 0.00100 1 01/15/2023 17:23 WG1989060
Dichlorodifluoromethane U 0.000374 0.00500 1 01/15/2023 17:23 WG1989060
1,1-Dichloroethane U 0.000100 0.00100 1 01/15/2023 17:23 WG1989060
1,2-Dichloroethane U 0.0000819 0.00100 1 01/15/2023 17:23 WG1989060
1,1-Dichloroethene U 0.000188 0.00100 1 01/15/2023 17:23 WG1989060
cis-1,2-Dichloroethene U 0.000126 0.00100 1 01/15/2023 17:23 WG1989060
trans-1,2-Dichloroethene U 0.000149 0.00100 1 01/15/2023 17:23 WG1989060
1,2-Dichloropropane U 0.000149 0.00100 1 01/15/2023 17:23 WG1989060
1,1-Dichloropropene U 0.000142 0.00100 1 01/15/2023 17:23 WG1989060
1,3-Dichloropropane U 0.000110 0.00100 1 01/15/2023 17:23 WG1989060
cis-1,3-Dichloropropene U 0.000111 0.00100 1 01/15/2023 17:23 WG1989060
trans-1,3-Dichloropropene U 0.000118 0.00100 1 01/15/2023 17:23 WG1989060
2,2-Dichloropropane U 0.000161 0.00100 1 01/15/2023 17:23 WG1989060
Di-isopropyl ether U 0.000105 0.00100 1 01/15/2023 17:23 WG1989060
Ethylbenzene U 0.000137 0.00100 1 01/15/2023 17:23 WG1989060
Hexachloro-1,3-butadiene U 0.000337 0.00100 1 01/15/2023 17:23 WG1989060
Isopropylbenzene U 0.000105 0.00100 1 01/15/2023 17:23 WG1989060
p-Isopropyltoluene U 0.000120 0.00100 1 01/15/2023 17:23 WG1989060
2-Butanone (MEK)U 0.00119 0.0100 1 01/15/2023 17:23 WG1989060
Methylene Chloride U 0.000430 0.00500 1 01/15/2023 17:23 WG1989060
4-Methyl-2-pentanone (MIBK)U 0.000478 0.0100 1 01/15/2023 17:23 WG1989060
Methyl tert-butyl ether U 0.000101 0.00100 1 01/15/2023 17:23 WG1989060
Naphthalene U 0.00100 0.00500 1 01/15/2023 17:23 WG1989060
n-Propylbenzene U 0.0000993 0.00100 1 01/15/2023 17:23 WG1989060
Styrene U 0.000118 0.00100 1 01/15/2023 17:23 WG1989060
1,1,1,2-Tetrachloroethane U 0.000147 0.00100 1 01/15/2023 17:23 WG1989060
1,1,2,2-Tetrachloroethane U 0.000133 0.00100 1 01/15/2023 17:23 WG1989060
1,1,2-Trichlorotrifluoroethane U 0.000180 0.00100 1 01/15/2023 17:23 WG1989060
Tetrachloroethene U 0.000300 0.00100 1 01/15/2023 17:23 WG1989060
Toluene U 0.000278 0.00100 1 01/15/2023 17:23 WG1989060
1,2,3-Trichlorobenzene U 0.000230 0.00100 1 01/15/2023 17:23 WG1989060
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 15 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 15 of 24
SAMPLE RESULTS - 06
L1576151
TB
Collected date/time: 01/12/23 00:00
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
1,2,4-Trichlorobenzene U 0.000481 0.00100 1 01/15/2023 17:23 WG1989060
1,1,1-Trichloroethane U 0.000149 0.00100 1 01/15/2023 17:23 WG1989060
1,1,2-Trichloroethane U 0.000158 0.00100 1 01/15/2023 17:23 WG1989060
Trichloroethene U 0.000190 0.00100 1 01/15/2023 17:23 WG1989060
Trichlorofluoromethane U 0.000160 0.00500 1 01/15/2023 17:23 WG1989060
1,2,3-Trichloropropane U 0.000237 0.00250 1 01/15/2023 17:23 WG1989060
1,2,4-Trimethylbenzene U 0.000322 0.00100 1 01/15/2023 17:23 WG1989060
1,2,3-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 17:23 WG1989060
1,3,5-Trimethylbenzene U 0.000104 0.00100 1 01/15/2023 17:23 WG1989060
Vinyl chloride U 0.000234 0.00100 1 01/15/2023 17:23 WG1989060
Xylenes, Total U 0.000174 0.00300 1 01/15/2023 17:23 WG1989060
(S) Toluene-d8 109 80.0-120 01/15/2023 17:23 WG1989060
(S) 4-Bromofluorobenzene 102 77.0-126 01/15/2023 17:23 WG1989060
(S) 1,2-Dichloroethane-d4 89.4 70.0-130 01/15/2023 17:23 WG1989060
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 16 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 16 of 24
QUALITY CONTROL SUMMARYWG1989060
Volatile Organic Compounds (GC/MS) by Method 8260B L1576151-01,02,03,04,05,06
Method Blank (MB)
(MB) R3881772-4 01/15/23 13:25
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
Acetone U 0.0113 0.0500
Acrolein U 0.00254 0.0500
Acrylonitrile U 0.000671 0.0100
Benzene U 0.0000941 0.00100
Bromobenzene U 0.000118 0.00100
Bromodichloromethane U 0.000136 0.00100
Bromoform U 0.000129 0.00100
Bromomethane U 0.000605 0.00500
n-Butylbenzene U 0.000157 0.00100
sec-Butylbenzene U 0.000125 0.00100
tert-Butylbenzene U 0.000127 0.00100
Carbon tetrachloride U 0.000128 0.00100
Chlorobenzene U 0.000116 0.00100
Chlorodibromomethane U 0.000140 0.00100
Chloroethane U 0.000192 0.00500
2-Chloroethyl vinyl ether U 0.000575 0.0500
Chloroform U 0.000111 0.00500
Chloromethane U 0.000960 0.00250
2-Chlorotoluene U 0.000106 0.00100
4-Chlorotoluene U 0.000114 0.00100
1,2-Dibromo-3-Chloropropane U 0.000276 0.00500
1,2-Dibromoethane U 0.000126 0.00100
Dibromomethane U 0.000122 0.00100
1,2-Dichlorobenzene U 0.000107 0.00100
1,3-Dichlorobenzene U 0.000110 0.00100
1,4-Dichlorobenzene U 0.000120 0.00100
Dichlorodifluoromethane U 0.000374 0.00500
1,1-Dichloroethane U 0.000100 0.00100
1,2-Dichloroethane U 0.0000819 0.00100
1,1-Dichloroethene U 0.000188 0.00100
cis-1,2-Dichloroethene U 0.000126 0.00100
trans-1,2-Dichloroethene U 0.000149 0.00100
1,2-Dichloropropane U 0.000149 0.00100
1,1-Dichloropropene U 0.000142 0.00100
1,3-Dichloropropane U 0.000110 0.00100
cis-1,3-Dichloropropene U 0.000111 0.00100
trans-1,3-Dichloropropene U 0.000118 0.00100
2,2-Dichloropropane U 0.000161 0.00100
Di-isopropyl ether U 0.000105 0.00100
Ethylbenzene U 0.000137 0.00100
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 17 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1989060
Volatile Organic Compounds (GC/MS) by Method 8260B L1576151-01,02,03,04,05,06
Method Blank (MB)
(MB) R3881772-4 01/15/23 13:25
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
Hexachloro-1,3-butadiene U 0.000337 0.00100
Isopropylbenzene U 0.000105 0.00100
p-Isopropyltoluene U 0.000120 0.00100
2-Butanone (MEK)U 0.00119 0.0100
Methylene Chloride U 0.000430 0.00500
4-Methyl-2-pentanone (MIBK)U 0.000478 0.0100
Methyl tert-butyl ether U 0.000101 0.00100
Naphthalene U 0.00100 0.00500
n-Propylbenzene U 0.0000993 0.00100
Styrene U 0.000118 0.00100
1,1,1,2-Tetrachloroethane U 0.000147 0.00100
1,1,2,2-Tetrachloroethane U 0.000133 0.00100
1,1,2-Trichlorotrifluoroethane U 0.000180 0.00100
Tetrachloroethene U 0.000300 0.00100
Toluene U 0.000278 0.00100
1,2,3-Trichlorobenzene U 0.000230 0.00100
1,2,4-Trichlorobenzene U 0.000481 0.00100
1,1,1-Trichloroethane U 0.000149 0.00100
1,1,2-Trichloroethane U 0.000158 0.00100
Trichloroethene U 0.000190 0.00100
Trichlorofluoromethane U 0.000160 0.00500
1,2,3-Trichloropropane U 0.000237 0.00250
1,2,4-Trimethylbenzene U 0.000322 0.00100
1,2,3-Trimethylbenzene U 0.000104 0.00100
1,3,5-Trimethylbenzene U 0.000104 0.00100
Vinyl chloride U 0.000234 0.00100
Xylenes, Total U 0.000174 0.00300
(S) Toluene-d8 108 80.0-120
(S) 4-Bromofluorobenzene 103 77.0-126
(S) 1,2-Dichloroethane-d4 89.5 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3881772-1 01/15/23 11:43 • (LCSD) R3881772-2 01/15/23 12:03
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
Acetone 0.0250 0.0193 0.0201 77.2 80.4 19.0-160 4.06 27
Acrolein 0.0250 0.0208 0.0201 83.2 80.4 10.0-160 3.42 26
Acrylonitrile 0.0250 0.0225 0.0224 90.0 89.6 55.0-149 0.445 20
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 11:07 18 of 24
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142-4.4 L1576151 01/18/23 13:13 18 of 24
QUALITY CONTROL SUMMARYWG1989060
Volatile Organic Compounds (GC/MS) by Method 8260B L1576151-01,02,03,04,05,06
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3881772-1 01/15/23 11:43 • (LCSD) R3881772-2 01/15/23 12:03
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
Benzene 0.00500 0.00483 0.00441 96.6 88.2 70.0-123 9.09 20
Bromobenzene 0.00500 0.00439 0.00414 87.8 82.8 73.0-121 5.86 20
Bromodichloromethane 0.00500 0.00481 0.00448 96.2 89.6 75.0-120 7.10 20
Bromoform 0.00500 0.00384 0.00389 76.8 77.8 68.0-132 1.29 20
Bromomethane 0.00500 0.00221 0.00197 44.2 39.4 10.0-160 11.5 25
n-Butylbenzene 0.00500 0.00429 0.00399 85.8 79.8 73.0-125 7.25 20
sec-Butylbenzene 0.00500 0.00448 0.00419 89.6 83.8 75.0-125 6.69 20
tert-Butylbenzene 0.00500 0.00469 0.00435 93.8 87.0 76.0-124 7.52 20
Carbon tetrachloride 0.00500 0.00449 0.00423 89.8 84.6 68.0-126 5.96 20
Chlorobenzene 0.00500 0.00524 0.00493 105 98.6 80.0-121 6.10 20
Chlorodibromomethane 0.00500 0.00499 0.00473 99.8 94.6 77.0-125 5.35 20
Chloroethane 0.00500 0.00470 0.00439 94.0 87.8 47.0-150 6.82 20
2-Chloroethyl vinyl ether 0.0250 0.0201 0.0200 80.4 80.0 51.0-160 0.499 20
Chloroform 0.00500 0.00464 0.00424 92.8 84.8 73.0-120 9.01 20
Chloromethane 0.00500 0.0120 0.0108 240 216 41.0-142 J4 J4 10.5 20
2-Chlorotoluene 0.00500 0.00452 0.00417 90.4 83.4 76.0-123 8.06 20
4-Chlorotoluene 0.00500 0.00445 0.00414 89.0 82.8 75.0-122 7.22 20
1,2-Dibromo-3-Chloropropane 0.00500 0.00435 0.00443 87.0 88.6 58.0-134 1.82 20
1,2-Dibromoethane 0.00500 0.00523 0.00511 105 102 80.0-122 2.32 20
Dibromomethane 0.00500 0.00517 0.00481 103 96.2 80.0-120 7.21 20
1,2-Dichlorobenzene 0.00500 0.00486 0.00464 97.2 92.8 79.0-121 4.63 20
1,3-Dichlorobenzene 0.00500 0.00483 0.00453 96.6 90.6 79.0-120 6.41 20
1,4-Dichlorobenzene 0.00500 0.00474 0.00433 94.8 86.6 79.0-120 9.04 20
Dichlorodifluoromethane 0.00500 0.00611 0.00558 122 112 51.0-149 9.07 20
1,1-Dichloroethane 0.00500 0.00470 0.00433 94.0 86.6 70.0-126 8.19 20
1,2-Dichloroethane 0.00500 0.00448 0.00436 89.6 87.2 70.0-128 2.71 20
1,1-Dichloroethene 0.00500 0.00562 0.00481 112 96.2 71.0-124 15.5 20
cis-1,2-Dichloroethene 0.00500 0.00518 0.00486 104 97.2 73.0-120 6.37 20
trans-1,2-Dichloroethene 0.00500 0.00532 0.00489 106 97.8 73.0-120 8.42 20
1,2-Dichloropropane 0.00500 0.00466 0.00431 93.2 86.2 77.0-125 7.80 20
1,1-Dichloropropene 0.00500 0.00526 0.00464 105 92.8 74.0-126 12.5 20
1,3-Dichloropropane 0.00500 0.00495 0.00473 99.0 94.6 80.0-120 4.55 20
cis-1,3-Dichloropropene 0.00500 0.00489 0.00467 97.8 93.4 80.0-123 4.60 20
trans-1,3-Dichloropropene 0.00500 0.00488 0.00470 97.6 94.0 78.0-124 3.76 20
2,2-Dichloropropane 0.00500 0.00492 0.00442 98.4 88.4 58.0-130 10.7 20
Di-isopropyl ether 0.00500 0.00417 0.00401 83.4 80.2 58.0-138 3.91 20
Ethylbenzene 0.00500 0.00530 0.00481 106 96.2 79.0-123 9.69 20
Hexachloro-1,3-butadiene 0.00500 0.00422 0.00387 84.4 77.4 54.0-138 8.65 20
Isopropylbenzene 0.00500 0.00492 0.00447 98.4 89.4 76.0-127 9.58 20
p-Isopropyltoluene 0.00500 0.00467 0.00423 93.4 84.6 76.0-125 9.89 20
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1989060
Volatile Organic Compounds (GC/MS) by Method 8260B L1576151-01,02,03,04,05,06
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3881772-1 01/15/23 11:43 • (LCSD) R3881772-2 01/15/23 12:03
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
2-Butanone (MEK)0.0250 0.0222 0.0225 88.8 90.0 44.0-160 1.34 20
Methylene Chloride 0.00500 0.00498 0.00456 99.6 91.2 67.0-120 8.81 20
4-Methyl-2-pentanone (MIBK)0.0250 0.0233 0.0229 93.2 91.6 68.0-142 1.73 20
Methyl tert-butyl ether 0.00500 0.00500 0.00481 100 96.2 68.0-125 3.87 20
Naphthalene 0.00500 0.00391 0.00392 78.2 78.4 54.0-135 0.255 20
n-Propylbenzene 0.00500 0.00446 0.00409 89.2 81.8 77.0-124 8.65 20
Styrene 0.00500 0.00496 0.00460 99.2 92.0 73.0-130 7.53 20
1,1,1,2-Tetrachloroethane 0.00500 0.00495 0.00464 99.0 92.8 75.0-125 6.47 20
1,1,2,2-Tetrachloroethane 0.00500 0.00466 0.00458 93.2 91.6 65.0-130 1.73 20
1,1,2-Trichlorotrifluoroethane 0.00500 0.00591 0.00512 118 102 69.0-132 14.3 20
Tetrachloroethene 0.00500 0.00565 0.00515 113 103 72.0-132 9.26 20
Toluene 0.00500 0.00492 0.00456 98.4 91.2 79.0-120 7.59 20
1,2,3-Trichlorobenzene 0.00500 0.00320 0.00325 64.0 65.0 50.0-138 1.55 20
1,2,4-Trichlorobenzene 0.00500 0.00427 0.00417 85.4 83.4 57.0-137 2.37 20
1,1,1-Trichloroethane 0.00500 0.00505 0.00459 101 91.8 73.0-124 9.54 20
1,1,2-Trichloroethane 0.00500 0.00517 0.00493 103 98.6 80.0-120 4.75 20
Trichloroethene 0.00500 0.00515 0.00464 103 92.8 78.0-124 10.4 20
Trichlorofluoromethane 0.00500 0.00520 0.00480 104 96.0 59.0-147 8.00 20
1,2,3-Trichloropropane 0.00500 0.00526 0.00516 105 103 73.0-130 1.92 20
1,2,4-Trimethylbenzene 0.00500 0.00466 0.00430 93.2 86.0 76.0-121 8.04 20
1,2,3-Trimethylbenzene 0.00500 0.00437 0.00412 87.4 82.4 77.0-120 5.89 20
1,3,5-Trimethylbenzene 0.00500 0.00454 0.00420 90.8 84.0 76.0-122 7.78 20
Vinyl chloride 0.00500 0.00512 0.00454 102 90.8 67.0-131 12.0 20
Xylenes, Total 0.0150 0.0150 0.0138 100 92.0 79.0-123 8.33 20
(S) Toluene-d8 106 107 80.0-120
(S) 4-Bromofluorobenzene 101 101 77.0-126
(S) 1,2-Dichloroethane-d4 93.1 91.9 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1990087
Volatile Organic Compounds (GC/MS) by Method 8260B L1576151-01,02,03,04,05
Method Blank (MB)
(MB) R3882054-5 01/17/23 10:15
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
cis-1,2-Dichloroethene U 0.000126 0.00100
Tetrachloroethene U 0.000300 0.00100
Trichloroethene U 0.000190 0.00100
(S) Toluene-d8 106 80.0-120
(S) 4-Bromofluorobenzene 98.0 77.0-126
(S) 1,2-Dichloroethane-d4 88.0 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3882054-1 01/17/23 08:27 • (LCSD) R3882054-2 01/17/23 08:48
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
cis-1,2-Dichloroethene 0.00500 0.00505 0.00547 101 109 73.0-120 7.98 20
Tetrachloroethene 0.00500 0.00569 0.00671 114 134 72.0-132 J4 16.5 20
Trichloroethene 0.00500 0.00524 0.00588 105 118 78.0-124 11.5 20
(S) Toluene-d8 106 107 80.0-120
(S) 4-Bromofluorobenzene 101 100 77.0-126
(S) 1,2-Dichloroethane-d4 88.9 87.3 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
RDL Reported Detection Limit.
Rec.Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
Dilution
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
J The identification of the analyte is acceptable; the reported value is an estimate.
J4 The associated batch QC was outside the established quality control range for accuracy.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
Alabama 40660 Nebraska NE-OS-15-05
Alaska 17-026 Nevada TN000032021-1
Arizona AZ0612 New Hampshire 2975
Arkansas 88-0469 New Jersey–NELAP TN002
California 2932 New Mexico ¹TN00003
Colorado TN00003 New York 11742
Connecticut PH-0197 North Carolina Env375
Florida E87487 North Carolina ¹DW21704
Georgia NELAP North Carolina ³41
Georgia ¹923 North Dakota R-140
Idaho TN00003 Ohio–VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
Iowa 364 Pennsylvania 68-02979
Kansas E-10277 Rhode Island LAO00356
Kentucky ¹ ⁶KY90010 South Carolina 84004002
Kentucky ²16 South Dakota n/a
Louisiana AI30792 Tennessee ¹ ⁴2006
Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
Maryland 324 Utah TN000032021-11
Massachusetts M-TN003 Vermont VT2006
Michigan 9958 Virginia 110033
Minnesota 047-999-395 Washington C847
Mississippi TN00003 West Virginia 233
Missouri 340 Wisconsin 998093910
Montana CERT0086 Wyoming A2LA
A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789
A2LA – ISO 17025 ⁵1461.02 DOD 1461.01
Canada 1461.01 USDA P330-15-00234
EPA–Crypto TN00003
ACCREDITATIONS & LOCATIONS

¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable
* Not all certifications held by the laboratory are applicable to the results reported in the attached report.
* Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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ANALYTICAL REPORT
January 23, 2023
Terracon - Salt Lake City, UT
Sample Delivery Group:L1577012
Samples Received:01/18/2023
Project Number:61217142
Description:SLC Station Center
Report To:Daniel Dean
6949 South High Tech Drive
Midvale, UT 84047
Entire Report Reviewed By:
January 23, 2023
[Preliminary Report]
Chris Ward
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be
reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace
Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and
ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided,
and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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January 23, 2023
Chris Ward
Project Manager
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 5
Sr: Sample Results 6
SV-1 L1577012-01 6
SV-2 L1577012-02 8
SV-3 L1577012-03 10
SV-4 L1577012-04 12
SV-5 L1577012-05 14
SV-6 L1577012-06 16
SV-7 L1577012-07 18
SV-8 L1577012-08 20
SV-9 L1577012-09 22
SV-10 L1577012-10 24
SV-11 L1577012-11 26
SV-12 L1577012-12 28
Qc: Quality Control Summary 30
Volatile Organic Compounds (MS) by Method TO-15 30
Gl: Glossary of Terms 38
Al: Accreditations & Locations 39
Sc: Sample Chain of Custody 40
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
SV-1 L1577012-01 Air Emma Rodgers 01/16/23 10:38 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 13:18 01/19/23 13:18 DAH Mt. Juliet, TN
Volatile Organic Compounds (MS) by Method TO-15 WG1992097 20 01/20/23 16:58 01/20/23 16:58 SDS Mt. Juliet, TN
Collected by Collected date/time Received date/time
SV-2 L1577012-02 Air Emma Rodgers 01/16/23 12:55 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 13:47 01/19/23 13:47 DAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
SV-3 L1577012-03 Air Emma Rodgers 01/16/23 15:41 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 14:15 01/19/23 14:15 CEP Mt. Juliet, TN
Volatile Organic Compounds (MS) by Method TO-15 WG1992084 10 01/20/23 12:41 01/20/23 12:41 CEP Mt. Juliet, TN
Collected by Collected date/time Received date/time
SV-4 L1577012-04 Air Emma Rodgers 01/16/23 12:55 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 14:43 01/19/23 14:43 DAH Mt. Juliet, TN
Volatile Organic Compounds (MS) by Method TO-15 WG1992097 1 01/20/23 12:58 01/20/23 12:58 DAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
SV-5 L1577012-05 Air Emma Rodgers 01/16/23 13:25 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 15:12 01/19/23 15:12 DAH Mt. Juliet, TN
Volatile Organic Compounds (MS) by Method TO-15 WG1992097 10 01/20/23 17:29 01/20/23 17:29 SDS Mt. Juliet, TN
Volatile Organic Compounds (MS) by Method TO-15 WG1992518 100 01/21/23 22:24 01/21/23 22:24 DBB Mt. Juliet, TN
Collected by Collected date/time Received date/time
SV-6 L1577012-06 Air Emma Rodgers 01/16/23 12:05 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 15:40 01/19/23 15:40 DAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
SV-7 L1577012-07 Air Emma Rodgers 01/16/23 12:25 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 16:09 01/19/23 16:09 DAH Mt. Juliet, TN
Volatile Organic Compounds (MS) by Method TO-15 WG1992097 10 01/20/23 17:59 01/20/23 17:59 SDS Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
SV-8 L1577012-08 Air Emma Rodgers 01/16/23 14:22 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 16:38 01/19/23 16:38 DAH Mt. Juliet, TN
Volatile Organic Compounds (MS) by Method TO-15 WG1992097 10 01/20/23 18:29 01/20/23 18:29 SDS Mt. Juliet, TN
Collected by Collected date/time Received date/time
SV-9 L1577012-09 Air Emma Rodgers 01/16/23 12:10 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 17:06 01/19/23 17:06 DAH Mt. Juliet, TN
Volatile Organic Compounds (MS) by Method TO-15 WG1992097 1 01/20/23 13:30 01/20/23 13:30 DAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
SV-10 L1577012-10 Air Emma Rodgers 01/16/23 13:25 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 17:34 01/19/23 17:34 DAH Mt. Juliet, TN
Volatile Organic Compounds (MS) by Method TO-15 WG1992097 10 01/20/23 18:59 01/20/23 18:59 SDS Mt. Juliet, TN
Collected by Collected date/time Received date/time
SV-11 L1577012-11 Air Emma Rodgers 01/16/23 13:56 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 18:03 01/19/23 18:03 DAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
SV-12 L1577012-12 Air Emma Rodgers 01/16/23 16:07 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (MS) by Method TO-15 WG1991333 1 01/19/23 18:31 01/19/23 18:31 DAH Mt. Juliet, TN
Volatile Organic Compounds (MS) by Method TO-15 WG1992097 10 01/20/23 19:29 01/20/23 19:29 SDS Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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CASE NARRATIVE
Unless qualified or notated within the narrative below, all sample aliquots were received at the correct
temperature, in the proper containers, with the appropriate preservatives, and within method specified
holding times. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental
samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality
Control are within established criteria except where addressed in this case narrative, a
non-conformance form or properly qualified within the sample results. By my digital signature below, I
affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the
potential to affect the quality of the data have been identified by the laboratory, and no information or
data have been knowingly withheld that would affect the quality of the data.
[Preliminary Report]
Chris Ward
Project Manager
Volatile Organic Compounds (MS) by Method TO-15
The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration (ICAL).
Batch Lab Sample ID Analytes
WG1992097 L1577012-01 2-Propanol
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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Chris Ward
Project Manager
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SAMPLE RESULTS - 01
L1577012
SV-1
Collected date/time: 01/16/23 10:38
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 ND ND 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 0.445 1.42 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 ND ND 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 6.02 37.9 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 0.349 1.20 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 22.7 136 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 13.5 53.5 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 2.36 9.35 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 10.2 19.2 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 0.349 1.51 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.330 1.85 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 ND ND 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 0.348 1.42 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 ND 2.22 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 ND ND 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 0.749 2.70 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 25.0 61.5 6280 15400 E 20 WG1992097
Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 4.00 27.2 144 978 20 WG1992097
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 0.508 1.50 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 2.54 9.57 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 6 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 6 of 43
SAMPLE RESULTS - 01
L1577012
SV-1
Collected date/time: 01/16/23 10:38
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 0.200 1.07 22.4 120 1 WG1991333
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 0.315 1.55 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 0.411 1.92 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 2.56 9.01 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 2.51 10.9 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 1.88 8.15 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 0.625 2.71 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 97.7 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 95.3 WG1992097
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 7 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 7 of 43
SAMPLE RESULTS - 02
L1577012
SV-2
Collected date/time: 01/16/23 12:55
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 ND ND 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 0.470 1.50 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 ND ND 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 13.2 24.9 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 0.876 3.80 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 1.19 6.69 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 ND ND 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 0.289 1.18 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 ND ND 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 ND ND 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG1991333
Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 0.200 1.36 99.9 678 1 WG1991333
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 1.68 6.33 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 8 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 8 of 43
SAMPLE RESULTS - 02
L1577012
SV-2
Collected date/time: 01/16/23 12:55
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 0.200 1.07 17.7 94.8 1 WG1991333
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 0.296 1.45 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 ND ND 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 4.88 21.2 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 3.27 14.2 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 1.61 6.98 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 96.8 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 9 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 9 of 43
SAMPLE RESULTS - 03
L1577012
SV-3
Collected date/time: 01/16/23 15:41
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 12.5 29.7 ND ND 10 WG1992084
Allyl chloride 107-05-1 76.53 2.00 6.26 ND ND 10 WG1992084
Benzene 71-43-2 78.10 0.200 0.639 ND ND 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 2.00 7.76 ND ND 10 WG1992084
1,3-Butadiene 106-99-0 54.10 20.0 44.3 ND ND 10 WG1992084
Carbon disulfide 75-15-0 76.10 2.00 6.22 ND ND 10 WG1992084
Carbon tetrachloride 56-23-5 154 2.00 12.6 ND ND 10 WG1992084
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 2.00 5.28 ND ND 10 WG1992084
Chloroform 67-66-3 119 2.00 9.73 6.01 29.3 10 WG1992084
Chloromethane 74-87-3 50.50 2.00 4.13 ND ND 10 WG1992084
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 2.00 6.89 ND ND 10 WG1992084
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 2.00 8.02 ND ND 10 WG1992084
1,1-Dichloroethene 75-35-4 96.90 2.00 7.93 ND ND 10 WG1992084
cis-1,2-Dichloroethene 156-59-2 96.90 2.00 7.93 102 404 10 WG1992084
trans-1,2-Dichloroethene 156-60-5 96.90 2.00 7.93 ND ND 10 WG1992084
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 12.5 23.6 13.8 26.0 10 WG1992084
Ethylbenzene 100-41-4 106 0.200 0.867 0.394 1.71 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 2.00 11.2 ND ND 10 WG1992084
Dichlorodifluoromethane 75-71-8 120.92 2.00 9.89 ND ND 10 WG1992084
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 2.00 15.3 ND ND 10 WG1992084
1,2-Dichlorotetrafluoroethane 76-14-2 171 2.00 14.0 ND ND 10 WG1992084
Heptane 142-82-5 100 0.200 0.818 ND ND 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 6.30 22.2 ND ND 10 WG1992084
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 2.00 6.94 ND ND 10 WG1992084
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 12.5 36.9 ND ND 10 WG1992084
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 2.00 7.21 ND ND 10 WG1992084
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 12.5 30.7 ND ND 10 WG1992084
Propene 115-07-1 42.10 12.5 21.5 ND ND 10 WG1992084
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 0.200 1.36 72.5 492 1 WG1991333
Tetrahydrofuran 109-99-9 72.10 2.00 5.90 ND ND 10 WG1992084
Toluene 108-88-3 92.10 0.500 1.88 4.73 17.8 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 10 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 10 of 43
SAMPLE RESULTS - 03
L1577012
SV-3
Collected date/time: 01/16/23 15:41
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 2.00 10.9 ND ND 10 WG1992084
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 2.00 10.7 445 2380 10 WG1992084
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 ND ND 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 2.00 9.34 ND ND 10 WG1992084
Vinyl chloride 75-01-4 62.50 2.00 5.11 ND ND 10 WG1992084
Vinyl Bromide 593-60-2 106.95 2.00 8.75 ND ND 10 WG1992084
Vinyl acetate 108-05-4 86.10 2.00 7.04 ND ND 10 WG1992084
Xylenes, Total 1330-20-7 106.16 0.600 2.61 1.66 7.21 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 1.33 5.77 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 0.328 1.42 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 97.5 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 98.0 WG1992084
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 11 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 11 of 43
SAMPLE RESULTS - 04
L1577012
SV-4
Collected date/time: 01/16/23 12:55
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 15.8 37.5 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 ND ND 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 0.427 1.33 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 0.526 3.16 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 5.96 27.5 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 16.2 30.5 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 ND ND 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 2.81 15.8 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 ND ND 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 0.248 1.90 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 ND ND 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 ND ND 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 ND ND 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 0.770 3.15 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 1.25 3.07 5.15 12.7 1 WG1991333
Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 0.200 1.36 5.83 39.6 1 WG1991333
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 ND ND 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 12 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 12 of 43
SAMPLE RESULTS - 04
L1577012
SV-4
Collected date/time: 01/16/23 12:55
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 0.260 1.41 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 0.200 1.07 34.5 185 1 WG1992097
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 ND ND 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 ND ND 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 ND ND 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 ND ND 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 ND ND 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 96.9 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 96.9 WG1992097
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 13 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 13 of 43
SAMPLE RESULTS - 05
L1577012
SV-5
Collected date/time: 01/16/23 13:25
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 25.1 59.6 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 2.68 8.56 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 2.51 7.81 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 0.257 1.25 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 0.212 0.840 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 0.617 2.45 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 2.89 5.45 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 5.20 22.5 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 0.276 1.35 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.217 1.22 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.484 2.39 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 1.22 4.99 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 ND ND 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 0.211 1.04 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 4.85 14.3 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG1991333
Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 20.0 136 617 4190 100 WG1992518
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 4.14 15.6 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 14 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 14 of 43
SAMPLE RESULTS - 05
L1577012
SV-5
Collected date/time: 01/16/23 13:25
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 0.206 1.12 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 2.00 10.7 145 777 10 WG1992097
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 1.24 6.09 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 0.768 3.77 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 0.397 1.85 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 ND ND 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 27.6 120 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 21.1 91.5 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 6.47 28.0 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 110 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 99.4 WG1992097
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 94.7 WG1992518
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 15 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 15 of 43
SAMPLE RESULTS - 06
L1577012
SV-6
Collected date/time: 01/16/23 12:05
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 20.6 49.0 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 1.37 4.38 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 1.01 3.14 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 0.586 2.85 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 2.61 4.92 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 1.52 6.59 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 0.735 3.61 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.207 1.16 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.471 2.33 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 0.699 2.86 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 ND ND 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 2.29 6.75 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG1991333
Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 0.200 1.36 50.4 342 1 WG1991333
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 0.822 2.42 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 3.35 12.6 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 16 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 16 of 43
SAMPLE RESULTS - 06
L1577012
SV-6
Collected date/time: 01/16/23 12:05
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 0.200 1.07 3.39 18.2 1 WG1991333
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 4.30 21.1 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 2.40 11.8 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 0.235 1.10 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 ND ND 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 9.23 40.1 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 7.09 30.7 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 2.14 9.28 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 106 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 17 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 17 of 43
SAMPLE RESULTS - 07
L1577012
SV-7
Collected date/time: 01/16/23 12:25
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 19.2 45.6 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 1.71 5.46 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 1.79 5.57 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 1.07 5.21 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 13.5 25.5 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 1.80 7.80 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 0.589 2.89 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 ND ND 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.434 2.15 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 0.884 3.62 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 ND ND 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 3.37 9.94 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 1.25 3.07 7.27 17.9 1 WG1991333
Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 2.00 13.6 324 2200 10 WG1992097
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 0.814 2.40 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 4.26 16.0 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 18 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 18 of 43
SAMPLE RESULTS - 07
L1577012
SV-7
Collected date/time: 01/16/23 12:25
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 0.200 1.07 55.3 296 1 WG1991333
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 3.17 15.6 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 1.82 8.93 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 ND ND 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 10.9 47.3 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 8.47 36.7 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 2.47 10.7 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 98.4 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 99.3 WG1992097
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 19 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 19 of 43
SAMPLE RESULTS - 08
L1577012
SV-8
Collected date/time: 01/16/23 14:22
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 ND ND 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 0.795 2.54 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 0.560 3.76 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 ND ND 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 5.62 27.4 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 0.668 2.65 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 0.245 0.971 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 2.24 4.22 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 0.510 2.21 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 5.60 31.5 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.414 2.05 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 0.277 1.13 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 ND ND 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 ND ND 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG1991333
Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 0.200 1.36 81.2 551 1 WG1991333
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 1.69 6.37 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 20 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 20 of 43
SAMPLE RESULTS - 08
L1577012
SV-8
Collected date/time: 01/16/23 14:22
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 2.00 10.7 368 1970 10 WG1992097
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 0.567 2.78 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 0.291 1.43 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 0.359 1.68 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 ND ND 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 2.80 12.2 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 2.12 9.19 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 0.684 2.97 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 109 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 98.7 WG1992097
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 21 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 21 of 43
SAMPLE RESULTS - 09
L1577012
SV-9
Collected date/time: 01/16/23 12:10
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 ND ND 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 0.364 1.16 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 ND ND 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 31.8 60.0 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 0.737 3.20 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.349 1.96 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 ND ND 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 0.743 3.04 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 ND ND 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 ND ND 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG1991333
Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 0.200 1.36 9.73 66.1 1 WG1991333
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 3.34 12.6 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 22 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 22 of 43
SAMPLE RESULTS - 09
L1577012
SV-9
Collected date/time: 01/16/23 12:10
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 0.200 1.07 4.01 21.5 1 WG1992097
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 0.268 1.32 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 ND ND 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 4.25 18.5 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 3.07 13.3 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 1.18 5.12 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 107 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 101 WG1992097
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 23 of 43
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 23 of 43
SAMPLE RESULTS - 10
L1577012
SV-10
Collected date/time: 01/16/23 13:25
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 ND ND 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 ND ND 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 ND ND 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 0.556 2.20 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 16.3 30.7 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 ND ND 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 3.68 20.7 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 ND ND 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 ND ND 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 ND ND 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 ND ND 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG1991333
Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 2.00 13.6 144 978 10 WG1992097
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 0.643 2.42 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 24 of 43
SAMPLE RESULTS - 10
L1577012
SV-10
Collected date/time: 01/16/23 13:25
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 0.200 1.07 27.7 148 1 WG1991333
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 ND ND 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 ND ND 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 ND ND 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 ND ND 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 ND ND 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 97.2 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 94.1 WG1992097
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 25 of 43
SAMPLE RESULTS - 11
L1577012
SV-11
Collected date/time: 01/16/23 13:56
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 ND ND 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 ND ND 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 ND ND 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 15.4 29.0 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 ND ND 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 2.41 13.5 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 ND ND 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 ND ND 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 ND ND 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 ND ND 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG1991333
Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 0.200 1.36 12.6 85.5 1 WG1991333
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 ND ND 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 26 of 43
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SAMPLE RESULTS - 11
L1577012
SV-11
Collected date/time: 01/16/23 13:56
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 0.200 1.07 11.3 60.5 1 WG1991333
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 ND ND 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 ND ND 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 ND ND 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 ND ND 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 ND ND 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 101 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 08:44 27 of 43
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Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 27 of 43
SAMPLE RESULTS - 12
L1577012
SV-12
Collected date/time: 01/16/23 16:07
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 7.64 18.2 1 WG1991333
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG1991333
Benzene 71-43-2 78.10 0.200 0.639 4.71 15.0 1 WG1991333
Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG1991333
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG1991333
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG1991333
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG1991333
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG1991333
Carbon disulfide 75-15-0 76.10 0.200 0.622 4.74 14.8 1 WG1991333
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG1991333
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG1991333
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG1991333
Chloroform 67-66-3 119 0.200 0.973 0.383 1.86 1 WG1991333
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG1991333
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG1991333
Cyclohexane 110-82-7 84.20 0.200 0.689 2.31 7.96 1 WG1991333
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG1991333
1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG1991333
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG1991333
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG1991333
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG1991333
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG1991333
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG1991333
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG1991333
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 1.17 4.64 1 WG1991333
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG1991333
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG1991333
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG1991333
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG1991333
1,4-Dioxane 123-91-1 88.10 0.200 0.721 ND ND 1 WG1991333
Ethanol 64-17-5 46.10 1.25 2.36 2.37 4.47 1 WG1991333
Ethylbenzene 100-41-4 106 0.200 0.867 2.63 11.4 1 WG1991333
4-Ethyltoluene 622-96-8 120 0.200 0.982 0.677 3.32 1 WG1991333
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.218 1.23 1 WG1991333
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.455 2.25 1 WG1991333
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG1991333
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG1991333
Heptane 142-82-5 100 0.200 0.818 5.59 22.9 1 WG1991333
Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG1991333
n-Hexane 110-54-3 86.20 0.630 2.22 3.91 13.8 1 WG1991333
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG1991333
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG1991333
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG1991333
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 1.43 4.22 1 WG1991333
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG1991333
Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG1991333
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG1991333
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG1991333
2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG1991333
Propene 115-07-1 42.10 1.25 2.15 1.79 3.08 1 WG1991333
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG1991333
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG1991333
Tetrachloroethylene 127-18-4 166 2.00 13.6 501 3400 10 WG1992097
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG1991333
Toluene 108-88-3 92.10 0.500 1.88 33.8 127 1 WG1991333
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG1991333
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 28 of 43
SAMPLE RESULTS - 12
L1577012
SV-12
Collected date/time: 01/16/23 16:07
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 0.214 1.16 1 WG1991333
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG1991333
Trichloroethylene 79-01-6 131 0.200 1.07 26.2 140 1 WG1991333
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 0.918 4.51 1 WG1991333
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 1.44 7.07 1 WG1991333
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 37.9 177 1 WG1991333
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG1991333
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG1991333
Vinyl acetate 108-05-4 86.10 0.200 0.704 ND ND 1 WG1991333
Xylenes, Total 1330-20-7 106.16 0.600 2.61 16.8 72.9 1 WG1991333
m&p-Xylene 1330-20-7 106 0.400 1.73 12.9 55.9 1 WG1991333
o-Xylene 95-47-6 106 0.200 0.867 3.88 16.8 1 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 110 WG1991333
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 100 WG1992097
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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Terracon - Salt Lake City, UT 61217142 L1577012 01/23/23 10:29 29 of 43
QUALITY CONTROL SUMMARYWG1991333
Volatile Organic Compounds (MS) by Method TO-15 L1577012-01,02,03,04,05,06,07,08,09,10,11,12
Method Blank (MB)
(MB) R3882552-3 01/19/23 09:47
MB Result MB Qualifier MB MDL MB RDL
Analyte ppbv ppbv ppbv
Acetone U 0.584 1.25
Allyl Chloride U 0.114 0.200
Benzene U 0.0715 0.200
Benzyl Chloride U 0.0598 0.200
Bromodichloromethane U 0.0702 0.200
Bromoform U 0.0732 0.600
Bromomethane U 0.0982 0.200
1,3-Butadiene U 0.104 2.00
Carbon disulfide U 0.102 0.200
Carbon tetrachloride U 0.0732 0.200
Chlorobenzene U 0.0832 0.200
Chloroethane U 0.0996 0.200
Chloroform U 0.0717 0.200
Chloromethane U 0.103 0.200
2-Chlorotoluene U 0.0828 0.200
Cyclohexane U 0.0753 0.200
Dibromochloromethane U 0.0727 0.200
1,2-Dibromoethane U 0.0721 0.200
1,2-Dichlorobenzene U 0.128 0.200
1,3-Dichlorobenzene U 0.182 0.200
1,4-Dichlorobenzene U 0.0557 0.200
1,2-Dichloroethane U 0.0700 0.200
1,1-Dichloroethane U 0.0723 0.200
1,1-Dichloroethene U 0.0762 0.200
cis-1,2-Dichloroethene U 0.0784 0.200
trans-1,2-Dichloroethene U 0.0673 0.200
1,2-Dichloropropane U 0.0760 0.200
cis-1,3-Dichloropropene U 0.0689 0.200
trans-1,3-Dichloropropene U 0.0728 0.200
1,4-Dioxane U 0.0833 0.200
Ethanol U 0.265 1.25
Ethylbenzene U 0.0835 0.200
4-Ethyltoluene U 0.0783 0.200
Trichlorofluoromethane U 0.0819 0.200
Dichlorodifluoromethane U 0.137 0.200
1,1,2-Trichlorotrifluoroethane U 0.0793 0.200
1,2-Dichlorotetrafluoroethane U 0.0890 0.200
Heptane U 0.104 0.200
Hexachloro-1,3-butadiene U 0.105 0.630
n-Hexane U 0.206 0.630
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1991333
Volatile Organic Compounds (MS) by Method TO-15 L1577012-01,02,03,04,05,06,07,08,09,10,11,12
Method Blank (MB)
(MB) R3882552-3 01/19/23 09:47
MB Result MB Qualifier MB MDL MB RDL
Analyte ppbv ppbv ppbv
Isopropylbenzene U 0.0777 0.200
Methylene Chloride U 0.0979 0.200
Methyl Butyl Ketone U 0.133 1.25
2-Butanone (MEK)U 0.0814 1.25
4-Methyl-2-pentanone (MIBK)U 0.0765 1.25
Methyl Methacrylate U 0.0876 0.200
MTBE U 0.0647 0.200
Naphthalene U 0.350 0.630
2-Propanol U 0.264 1.25
Propene U 0.0932 1.25
Styrene U 0.0788 0.200
1,1,2,2-Tetrachloroethane U 0.0743 0.200
Tetrachloroethylene U 0.0814 0.200
Tetrahydrofuran U 0.0734 0.200
Toluene U 0.0870 0.500
1,2,4-Trichlorobenzene U 0.148 0.630
1,1,1-Trichloroethane U 0.0736 0.200
1,1,2-Trichloroethane U 0.0775 0.200
Trichloroethylene U 0.0680 0.200
1,2,4-Trimethylbenzene U 0.0764 0.200
1,3,5-Trimethylbenzene U 0.0779 0.200
2,2,4-Trimethylpentane U 0.133 0.200
Vinyl chloride U 0.0949 0.200
Vinyl Bromide U 0.0852 0.200
Vinyl acetate U 0.116 0.200
Xylenes, Total U 0.135 0.600
m&p-Xylene U 0.135 0.400
o-Xylene U 0.0828 0.200
(S) 1,4-Bromofluorobenzene 101 60.0-140
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3882552-1 01/19/23 08:49 • (LCSD) R3882552-2 01/19/23 09:19
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ppbv ppbv ppbv %%%%%
Acetone 3.75 3.96 3.94 106 105 70.0-130 0.506 25
Allyl Chloride 3.75 3.89 3.84 104 102 70.0-130 1.29 25
Benzene 3.75 3.43 3.44 91.5 91.7 70.0-130 0.291 25
Benzyl Chloride 3.75 3.61 3.54 96.3 94.4 70.0-152 1.96 25
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1991333
Volatile Organic Compounds (MS) by Method TO-15 L1577012-01,02,03,04,05,06,07,08,09,10,11,12
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3882552-1 01/19/23 08:49 • (LCSD) R3882552-2 01/19/23 09:19
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ppbv ppbv ppbv %%%%%
Bromodichloromethane 3.75 3.58 3.58 95.5 95.5 70.0-130 0.000 25
Bromoform 3.75 3.75 3.68 100 98.1 70.0-130 1.88 25
Bromomethane 3.75 3.79 3.80 101 101 70.0-130 0.264 25
1,3-Butadiene 3.75 3.69 3.65 98.4 97.3 70.0-130 1.09 25
Carbon disulfide 3.75 4.04 3.99 108 106 70.0-130 1.25 25
Carbon tetrachloride 3.75 3.54 3.56 94.4 94.9 70.0-130 0.563 25
Chlorobenzene 3.75 3.48 3.50 92.8 93.3 70.0-130 0.573 25
Chloroethane 3.75 3.84 3.82 102 102 70.0-130 0.522 25
Chloroform 3.75 3.59 3.56 95.7 94.9 70.0-130 0.839 25
Chloromethane 3.75 3.75 3.78 100 101 70.0-130 0.797 25
2-Chlorotoluene 3.75 3.44 3.43 91.7 91.5 70.0-130 0.291 25
Cyclohexane 3.75 3.60 3.56 96.0 94.9 70.0-130 1.12 25
Dibromochloromethane 3.75 3.71 3.72 98.9 99.2 70.0-130 0.269 25
1,2-Dibromoethane 3.75 3.56 3.58 94.9 95.5 70.0-130 0.560 25
1,2-Dichlorobenzene 3.75 3.52 3.48 93.9 92.8 70.0-130 1.14 25
1,3-Dichlorobenzene 3.75 3.59 3.58 95.7 95.5 70.0-130 0.279 25
1,4-Dichlorobenzene 3.75 3.62 3.61 96.5 96.3 70.0-130 0.277 25
1,2-Dichloroethane 3.75 3.37 3.33 89.9 88.8 70.0-130 1.19 25
1,1-Dichloroethane 3.75 3.53 3.52 94.1 93.9 70.0-130 0.284 25
1,1-Dichloroethene 3.75 3.83 3.75 102 100 70.0-130 2.11 25
cis-1,2-Dichloroethene 3.75 3.56 3.57 94.9 95.2 70.0-130 0.281 25
trans-1,2-Dichloroethene 3.75 3.80 3.76 101 100 70.0-130 1.06 25
1,2-Dichloropropane 3.75 3.51 3.52 93.6 93.9 70.0-130 0.284 25
cis-1,3-Dichloropropene 3.75 3.62 3.63 96.5 96.8 70.0-130 0.276 25
trans-1,3-Dichloropropene 3.75 3.61 3.56 96.3 94.9 70.0-130 1.39 25
1,4-Dioxane 3.75 3.86 3.87 103 103 70.0-140 0.259 25
Ethanol 3.75 4.18 4.11 111 110 55.0-148 1.69 25
Ethylbenzene 3.75 3.49 3.46 93.1 92.3 70.0-130 0.863 25
4-Ethyltoluene 3.75 3.61 3.58 96.3 95.5 70.0-130 0.834 25
Trichlorofluoromethane 3.75 3.80 3.83 101 102 70.0-130 0.786 25
Dichlorodifluoromethane 3.75 3.76 3.76 100 100 64.0-139 0.000 25
1,1,2-Trichlorotrifluoroethane 3.75 3.82 3.82 102 102 70.0-130 0.000 25
1,2-Dichlorotetrafluoroethane 3.75 3.78 3.76 101 100 70.0-130 0.531 25
Heptane 3.75 3.58 3.62 95.5 96.5 70.0-130 1.11 25
Hexachloro-1,3-butadiene 3.75 3.40 3.38 90.7 90.1 70.0-151 0.590 25
n-Hexane 3.75 3.64 3.63 97.1 96.8 70.0-130 0.275 25
Isopropylbenzene 3.75 3.52 3.51 93.9 93.6 70.0-130 0.284 25
Methylene Chloride 3.75 3.71 3.72 98.9 99.2 70.0-130 0.269 25
Methyl Butyl Ketone 3.75 4.20 4.22 112 113 70.0-149 0.475 25
Methyl Ethyl Ketone 3.75 3.65 3.67 97.3 97.9 70.0-130 0.546 25
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1991333
Volatile Organic Compounds (MS) by Method TO-15 L1577012-01,02,03,04,05,06,07,08,09,10,11,12
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3882552-1 01/19/23 08:49 • (LCSD) R3882552-2 01/19/23 09:19
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ppbv ppbv ppbv %%%%%
4-Methyl-2-pentanone (MIBK)3.75 3.80 3.85 101 103 70.0-139 1.31 25
Methyl Methacrylate 3.75 3.54 3.57 94.4 95.2 70.0-130 0.844 25
MTBE 3.75 3.60 3.59 96.0 95.7 70.0-130 0.278 25
Naphthalene 3.75 4.09 4.11 109 110 70.0-159 0.488 25
2-Propanol 3.75 4.13 4.14 110 110 70.0-139 0.242 25
Propene 3.75 3.25 3.24 86.7 86.4 64.0-144 0.308 25
Styrene 3.75 3.49 3.47 93.1 92.5 70.0-130 0.575 25
1,1,2,2-Tetrachloroethane 3.75 3.57 3.55 95.2 94.7 70.0-130 0.562 25
Tetrachloroethylene 3.75 3.48 3.53 92.8 94.1 70.0-130 1.43 25
Tetrahydrofuran 3.75 3.67 3.73 97.9 99.5 70.0-137 1.62 25
Toluene 3.75 3.50 3.51 93.3 93.6 70.0-130 0.285 25
1,2,4-Trichlorobenzene 3.75 3.67 3.72 97.9 99.2 70.0-160 1.35 25
1,1,1-Trichloroethane 3.75 3.51 3.53 93.6 94.1 70.0-130 0.568 25
1,1,2-Trichloroethane 3.75 3.45 3.47 92.0 92.5 70.0-130 0.578 25
Trichloroethylene 3.75 3.47 3.49 92.5 93.1 70.0-130 0.575 25
1,2,4-Trimethylbenzene 3.75 3.73 3.64 99.5 97.1 70.0-130 2.44 25
1,3,5-Trimethylbenzene 3.75 3.59 3.56 95.7 94.9 70.0-130 0.839 25
2,2,4-Trimethylpentane 3.75 3.64 3.63 97.1 96.8 70.0-130 0.275 25
Vinyl chloride 3.75 3.79 3.78 101 101 70.0-130 0.264 25
Vinyl Bromide 3.75 3.91 3.92 104 105 70.0-130 0.255 25
Vinyl acetate 3.75 3.00 2.90 80.0 77.3 70.0-130 3.39 25
Xylenes, Total 11.3 10.8 10.8 95.6 95.6 70.0-130 0.000 25
m&p-Xylene 7.50 7.23 7.19 96.4 95.9 70.0-130 0.555 25
o-Xylene 3.75 3.59 3.59 95.7 95.7 70.0-130 0.000 25
(S) 1,4-Bromofluorobenzene 99.4 101 60.0-140
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1992084
Volatile Organic Compounds (MS) by Method TO-15 L1577012-03
Method Blank (MB)
(MB) R3882919-3 01/20/23 09:33
MB Result MB Qualifier MB MDL MB RDL
Analyte ppbv ppbv ppbv
Acetone U 0.584 1.25
Allyl Chloride U 0.114 0.200
Bromomethane U 0.0982 0.200
1,3-Butadiene U 0.104 2.00
Carbon disulfide U 0.102 0.200
Carbon tetrachloride U 0.0732 0.200
Chloroethane U 0.0996 0.200
Chloroform U 0.0717 0.200
Chloromethane U 0.103 0.200
Cyclohexane U 0.0753 0.200
1,1-Dichloroethane U 0.0723 0.200
1,1-Dichloroethene U 0.0762 0.200
cis-1,2-Dichloroethene U 0.0784 0.200
trans-1,2-Dichloroethene U 0.0673 0.200
Ethanol U 0.265 1.25
Trichlorofluoromethane U 0.0819 0.200
Dichlorodifluoromethane U 0.137 0.200
1,1,2-Trichlorotrifluoroethane U 0.0793 0.200
1,2-Dichlorotetrafluoroethane U 0.0890 0.200
n-Hexane U 0.206 0.630
Methylene Chloride U 0.0979 0.200
2-Butanone (MEK)U 0.0814 1.25
MTBE U 0.0647 0.200
2-Propanol U 0.264 1.25
Propene U 0.0932 1.25
Tetrahydrofuran U 0.0734 0.200
1,1,1-Trichloroethane U 0.0736 0.200
Trichloroethylene U 0.0680 0.200
2,2,4-Trimethylpentane U 0.133 0.200
Vinyl chloride U 0.0949 0.200
Vinyl Bromide U 0.0852 0.200
Vinyl acetate U 0.116 0.200
(S) 1,4-Bromofluorobenzene 96.6 60.0-140
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1992084
Volatile Organic Compounds (MS) by Method TO-15 L1577012-03
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3882919-1 01/20/23 08:35 • (LCSD) R3882919-2 01/20/23 09:05
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ppbv ppbv ppbv %%%%%
Acetone 3.75 3.81 4.20 102 112 70.0-130 9.74 25
Allyl Chloride 3.75 3.86 3.85 103 103 70.0-130 0.259 25
Bromomethane 3.75 3.78 3.78 101 101 70.0-130 0.000 25
1,3-Butadiene 3.75 3.60 3.62 96.0 96.5 70.0-130 0.554 25
Carbon disulfide 3.75 4.25 4.21 113 112 70.0-130 0.946 25
Carbon tetrachloride 3.75 3.63 3.58 96.8 95.5 70.0-130 1.39 25
Chloroethane 3.75 3.82 3.70 102 98.7 70.0-130 3.19 25
Chloroform 3.75 3.52 3.48 93.9 92.8 70.0-130 1.14 25
Chloromethane 3.75 3.71 3.66 98.9 97.6 70.0-130 1.36 25
Cyclohexane 3.75 3.47 3.44 92.5 91.7 70.0-130 0.868 25
1,1-Dichloroethane 3.75 3.47 3.41 92.5 90.9 70.0-130 1.74 25
1,1-Dichloroethene 3.75 3.72 3.77 99.2 101 70.0-130 1.34 25
cis-1,2-Dichloroethene 3.75 3.44 3.46 91.7 92.3 70.0-130 0.580 25
trans-1,2-Dichloroethene 3.75 3.81 3.82 102 102 70.0-130 0.262 25
Ethanol 3.75 4.09 3.98 109 106 55.0-148 2.73 25
Trichlorofluoromethane 3.75 3.86 3.84 103 102 70.0-130 0.519 25
Dichlorodifluoromethane 3.75 3.78 3.71 101 98.9 64.0-139 1.87 25
1,1,2-Trichlorotrifluoroethane 3.75 3.87 3.90 103 104 70.0-130 0.772 25
1,2-Dichlorotetrafluoroethane 3.75 3.75 3.75 100 100 70.0-130 0.000 25
n-Hexane 3.75 3.52 3.54 93.9 94.4 70.0-130 0.567 25
Methylene Chloride 3.75 3.70 3.74 98.7 99.7 70.0-130 1.08 25
Methyl Ethyl Ketone 3.75 3.55 3.56 94.7 94.9 70.0-130 0.281 25
MTBE 3.75 3.47 3.46 92.5 92.3 70.0-130 0.289 25
2-Propanol 3.75 4.11 4.10 110 109 70.0-139 0.244 25
Propene 3.75 3.14 3.11 83.7 82.9 64.0-144 0.960 25
Tetrahydrofuran 3.75 3.58 3.54 95.5 94.4 70.0-137 1.12 25
1,1,1-Trichloroethane 3.75 3.54 3.51 94.4 93.6 70.0-130 0.851 25
Trichloroethylene 3.75 3.42 3.42 91.2 91.2 70.0-130 0.000 25
2,2,4-Trimethylpentane 3.75 3.54 3.50 94.4 93.3 70.0-130 1.14 25
Vinyl chloride 3.75 3.82 3.75 102 100 70.0-130 1.85 25
Vinyl Bromide 3.75 3.90 3.91 104 104 70.0-130 0.256 25
Vinyl acetate 3.75 2.97 2.97 79.2 79.2 70.0-130 0.000 25
(S) 1,4-Bromofluorobenzene 99.4 99.6 60.0-140
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1992097
Volatile Organic Compounds (MS) by Method TO-15 L1577012-01,04,05,07,08,09,10,12
Method Blank (MB)
(MB) R3882974-3 01/20/23 09:44
MB Result MB Qualifier MB MDL MB RDL
Analyte ppbv ppbv ppbv
2-Propanol U 0.264 1.25
Tetrachloroethylene U 0.0814 0.200
Trichloroethylene U 0.0680 0.200
(S) 1,4-Bromofluorobenzene 96.1 60.0-140
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3882974-1 01/20/23 08:41 • (LCSD) R3882974-2 01/20/23 09:14
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ppbv ppbv ppbv %%%%%
2-Propanol 3.75 3.68 3.88 98.1 103 70.0-139 5.29 25
Tetrachloroethylene 3.75 4.26 4.34 114 116 70.0-130 1.86 25
Trichloroethylene 3.75 4.17 4.25 111 113 70.0-130 1.90 25
(S) 1,4-Bromofluorobenzene 100 104 60.0-140
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1992518
Volatile Organic Compounds (MS) by Method TO-15 L1577012-05
Method Blank (MB)
(MB) R3883193-3 01/21/23 08:13
MB Result MB Qualifier MB MDL MB RDL
Analyte ppbv ppbv ppbv
Tetrachloroethylene U 0.0814 0.200
(S) 1,4-Bromofluorobenzene 94.6 60.0-140
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3883193-1 01/21/23 07:11 • (LCSD) R3883193-2 01/21/23 07:43
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ppbv ppbv ppbv %%%%%
Tetrachloroethylene 3.75 4.41 4.38 118 117 70.0-130 0.683 25
(S) 1,4-Bromofluorobenzene 103 101 60.0-140
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
ND Not detected at the Reporting Limit (or MDL where applicable).
RDL Reported Detection Limit.
Rec.Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
Dilution
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
E The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial
calibration (ICAL).
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
Alabama 40660 Nebraska NE-OS-15-05
Alaska 17-026 Nevada TN000032021-1
Arizona AZ0612 New Hampshire 2975
Arkansas 88-0469 New Jersey–NELAP TN002
California 2932 New Mexico ¹TN00003
Colorado TN00003 New York 11742
Connecticut PH-0197 North Carolina Env375
Florida E87487 North Carolina ¹DW21704
Georgia NELAP North Carolina ³41
Georgia ¹923 North Dakota R-140
Idaho TN00003 Ohio–VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
Iowa 364 Pennsylvania 68-02979
Kansas E-10277 Rhode Island LAO00356
Kentucky ¹ ⁶KY90010 South Carolina 84004002
Kentucky ²16 South Dakota n/a
Louisiana AI30792 Tennessee ¹ ⁴2006
Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
Maryland 324 Utah TN000032021-11
Massachusetts M-TN003 Vermont VT2006
Michigan 9958 Virginia 110033
Minnesota 047-999-395 Washington C847
Mississippi TN00003 West Virginia 233
Missouri 340 Wisconsin 998093910
Montana CERT0086 Wyoming A2LA
A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789
A2LA – ISO 17025 ⁵1461.02 DOD 1461.01
Canada 1461.01 USDA P330-15-00234
EPA–Crypto TN00003
ACCREDITATIONS & LOCATIONS

¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable
* Not all certifications held by the laboratory are applicable to the results reported in the attached report.
* Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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ANALYTICAL REPORT
January 19, 2023
Terracon - Salt Lake City, UT
Sample Delivery Group:L1577035
Samples Received:01/18/2023
Project Number:61217142
Description:SLC Station Center
Report To:Daniel Dean
6949 South High Tech Drive
Midvale, UT 84047
Entire Report Reviewed By:
January 19, 2023
[Preliminary Report]
Chris Ward
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be
reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace
Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and
ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided,
and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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January 19, 2023
Chris Ward
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
MW-2 RESAMPLE L1577035-01 5
Qc: Quality Control Summary 7
Volatile Organic Compounds (GC/MS) by Method 8260B 7
Gl: Glossary of Terms 11
Al: Accreditations & Locations 12
Sc: Sample Chain of Custody 13
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-2 RESAMPLE L1577035-01 GW Sarah Hamilton 01/17/23 11:20 01/18/23 12:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG1991376 20 01/19/23 11:45 01/19/23 11:45 JBE Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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CASE NARRATIVE
Unless qualified or notated within the narrative below, all sample aliquots were received at the correct
temperature, in the proper containers, with the appropriate preservatives, and within method specified
holding times. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental
samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality
Control are within established criteria except where addressed in this case narrative, a
non-conformance form or properly qualified within the sample results. By my digital signature below, I
affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the
potential to affect the quality of the data have been identified by the laboratory, and no information or
data have been knowingly withheld that would affect the quality of the data.
[Preliminary Report]
Chris Ward
Project Manager
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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Chris Ward
Project Manager
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SAMPLE RESULTS - 01
L1577035
MW-2 RESAMPLE
Collected date/time: 01/17/23 11:20
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
Acetone U 0.226 1.00 20 01/19/2023 11:45 WG1991376
Acrolein U 0.0508 1.00 20 01/19/2023 11:45 WG1991376
Acrylonitrile U 0.0134 0.200 20 01/19/2023 11:45 WG1991376
Benzene U 0.00188 0.0200 20 01/19/2023 11:45 WG1991376
Bromobenzene U 0.00236 0.0200 20 01/19/2023 11:45 WG1991376
Bromodichloromethane U 0.00272 0.0200 20 01/19/2023 11:45 WG1991376
Bromoform U 0.00258 0.0200 20 01/19/2023 11:45 WG1991376
Bromomethane U 0.0121 0.100 20 01/19/2023 11:45 WG1991376
n-Butylbenzene U 0.00314 0.0200 20 01/19/2023 11:45 WG1991376
sec-Butylbenzene U 0.00250 0.0200 20 01/19/2023 11:45 WG1991376
tert-Butylbenzene U 0.00254 0.0200 20 01/19/2023 11:45 WG1991376
Carbon tetrachloride U 0.00256 0.0200 20 01/19/2023 11:45 WG1991376
Chlorobenzene U 0.00232 0.0200 20 01/19/2023 11:45 WG1991376
Chlorodibromomethane U 0.00280 0.0200 20 01/19/2023 11:45 WG1991376
Chloroethane U 0.00384 0.100 20 01/19/2023 11:45 WG1991376
2-Chloroethyl vinyl ether U 0.0115 1.00 20 01/19/2023 11:45 WG1991376
Chloroform U 0.00222 0.100 20 01/19/2023 11:45 WG1991376
Chloromethane U 0.0192 0.0500 20 01/19/2023 11:45 WG1991376
2-Chlorotoluene U 0.00212 0.0200 20 01/19/2023 11:45 WG1991376
4-Chlorotoluene U 0.00228 0.0200 20 01/19/2023 11:45 WG1991376
1,2-Dibromo-3-Chloropropane U 0.00552 0.100 20 01/19/2023 11:45 WG1991376
1,2-Dibromoethane U 0.00252 0.0200 20 01/19/2023 11:45 WG1991376
Dibromomethane U 0.00244 0.0200 20 01/19/2023 11:45 WG1991376
1,2-Dichlorobenzene U 0.00214 0.0200 20 01/19/2023 11:45 WG1991376
1,3-Dichlorobenzene U 0.00220 0.0200 20 01/19/2023 11:45 WG1991376
1,4-Dichlorobenzene U 0.00240 0.0200 20 01/19/2023 11:45 WG1991376
Dichlorodifluoromethane U 0.00748 0.100 20 01/19/2023 11:45 WG1991376
1,1-Dichloroethane U 0.00200 0.0200 20 01/19/2023 11:45 WG1991376
1,2-Dichloroethane U 0.00164 0.0200 20 01/19/2023 11:45 WG1991376
1,1-Dichloroethene U 0.00376 0.0200 20 01/19/2023 11:45 WG1991376
cis-1,2-Dichloroethene 1.42 0.00252 0.0200 20 01/19/2023 11:45 WG1991376
trans-1,2-Dichloroethene 0.0155 J 0.00298 0.0200 20 01/19/2023 11:45 WG1991376
1,2-Dichloropropane U 0.00298 0.0200 20 01/19/2023 11:45 WG1991376
1,1-Dichloropropene U 0.00284 0.0200 20 01/19/2023 11:45 WG1991376
1,3-Dichloropropane U 0.00220 0.0200 20 01/19/2023 11:45 WG1991376
cis-1,3-Dichloropropene U 0.00222 0.0200 20 01/19/2023 11:45 WG1991376
trans-1,3-Dichloropropene U 0.00236 0.0200 20 01/19/2023 11:45 WG1991376
2,2-Dichloropropane U 0.00322 0.0200 20 01/19/2023 11:45 WG1991376
Di-isopropyl ether U 0.00210 0.0200 20 01/19/2023 11:45 WG1991376
Ethylbenzene U 0.00274 0.0200 20 01/19/2023 11:45 WG1991376
Hexachloro-1,3-butadiene U 0.00674 0.0200 20 01/19/2023 11:45 WG1991376
Isopropylbenzene U 0.00210 0.0200 20 01/19/2023 11:45 WG1991376
p-Isopropyltoluene U 0.00240 0.0200 20 01/19/2023 11:45 WG1991376
2-Butanone (MEK)U 0.0238 0.200 20 01/19/2023 11:45 WG1991376
Methylene Chloride U 0.00860 0.100 20 01/19/2023 11:45 WG1991376
4-Methyl-2-pentanone (MIBK)U 0.00956 0.200 20 01/19/2023 11:45 WG1991376
Methyl tert-butyl ether U 0.00202 0.0200 20 01/19/2023 11:45 WG1991376
Naphthalene U 0.0200 0.100 20 01/19/2023 11:45 WG1991376
n-Propylbenzene U 0.00199 0.0200 20 01/19/2023 11:45 WG1991376
Styrene U 0.00236 0.0200 20 01/19/2023 11:45 WG1991376
1,1,1,2-Tetrachloroethane U 0.00294 0.0200 20 01/19/2023 11:45 WG1991376
1,1,2,2-Tetrachloroethane U 0.00266 0.0200 20 01/19/2023 11:45 WG1991376
1,1,2-Trichlorotrifluoroethane U 0.00360 0.0200 20 01/19/2023 11:45 WG1991376
Tetrachloroethene 0.0845 0.00600 0.0200 20 01/19/2023 11:45 WG1991376
Toluene U 0.00556 0.0200 20 01/19/2023 11:45 WG1991376
1,2,3-Trichlorobenzene U 0.00460 0.0200 20 01/19/2023 11:45 WG1991376
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 01
L1577035
MW-2 RESAMPLE
Collected date/time: 01/17/23 11:20
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte mg/l mg/l mg/l date / time
1,2,4-Trichlorobenzene U 0.00962 0.0200 20 01/19/2023 11:45 WG1991376
1,1,1-Trichloroethane U 0.00298 0.0200 20 01/19/2023 11:45 WG1991376
1,1,2-Trichloroethane U 0.00316 0.0200 20 01/19/2023 11:45 WG1991376
Trichloroethene 0.0388 0.00380 0.0200 20 01/19/2023 11:45 WG1991376
Trichlorofluoromethane U 0.00320 0.100 20 01/19/2023 11:45 WG1991376
1,2,3-Trichloropropane U 0.00474 0.0500 20 01/19/2023 11:45 WG1991376
1,2,4-Trimethylbenzene U 0.00644 0.0200 20 01/19/2023 11:45 WG1991376
1,2,3-Trimethylbenzene U 0.00208 0.0200 20 01/19/2023 11:45 WG1991376
1,3,5-Trimethylbenzene U 0.00208 0.0200 20 01/19/2023 11:45 WG1991376
Vinyl chloride 0.0712 0.00468 0.0200 20 01/19/2023 11:45 WG1991376
Xylenes, Total U 0.00348 0.0600 20 01/19/2023 11:45 WG1991376
(S) Toluene-d8 104 80.0-120 01/19/2023 11:45 WG1991376
(S) 4-Bromofluorobenzene 99.3 77.0-126 01/19/2023 11:45 WG1991376
(S) 1,2-Dichloroethane-d4 95.9 70.0-130 01/19/2023 11:45 WG1991376
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1991376
Volatile Organic Compounds (GC/MS) by Method 8260B L1577035-01
Method Blank (MB)
(MB) R3882517-3 01/19/23 09:52
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
Acetone U 0.0113 0.0500
Acrolein U 0.00254 0.0500
Acrylonitrile U 0.000671 0.0100
Benzene U 0.0000941 0.00100
Bromobenzene U 0.000118 0.00100
Bromodichloromethane U 0.000136 0.00100
Bromoform U 0.000129 0.00100
Bromomethane U 0.000605 0.00500
n-Butylbenzene U 0.000157 0.00100
sec-Butylbenzene U 0.000125 0.00100
tert-Butylbenzene U 0.000127 0.00100
Carbon tetrachloride U 0.000128 0.00100
Chlorobenzene U 0.000116 0.00100
Chlorodibromomethane U 0.000140 0.00100
Chloroethane U 0.000192 0.00500
2-Chloroethyl vinyl ether U 0.000575 0.0500
Chloroform U 0.000111 0.00500
Chloromethane U 0.000960 0.00250
2-Chlorotoluene U 0.000106 0.00100
4-Chlorotoluene U 0.000114 0.00100
1,2-Dibromo-3-Chloropropane U 0.000276 0.00500
1,2-Dibromoethane U 0.000126 0.00100
Dibromomethane U 0.000122 0.00100
1,2-Dichlorobenzene U 0.000107 0.00100
1,3-Dichlorobenzene U 0.000110 0.00100
1,4-Dichlorobenzene U 0.000120 0.00100
Dichlorodifluoromethane U 0.000374 0.00500
1,1-Dichloroethane U 0.000100 0.00100
1,2-Dichloroethane U 0.0000819 0.00100
1,1-Dichloroethene U 0.000188 0.00100
cis-1,2-Dichloroethene U 0.000126 0.00100
trans-1,2-Dichloroethene U 0.000149 0.00100
1,2-Dichloropropane U 0.000149 0.00100
1,1-Dichloropropene U 0.000142 0.00100
1,3-Dichloropropane U 0.000110 0.00100
cis-1,3-Dichloropropene U 0.000111 0.00100
trans-1,3-Dichloropropene U 0.000118 0.00100
2,2-Dichloropropane U 0.000161 0.00100
Di-isopropyl ether U 0.000105 0.00100
Ethylbenzene U 0.000137 0.00100
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1991376
Volatile Organic Compounds (GC/MS) by Method 8260B L1577035-01
Method Blank (MB)
(MB) R3882517-3 01/19/23 09:52
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
Hexachloro-1,3-butadiene U 0.000337 0.00100
Isopropylbenzene U 0.000105 0.00100
p-Isopropyltoluene U 0.000120 0.00100
2-Butanone (MEK)U 0.00119 0.0100
Methylene Chloride U 0.000430 0.00500
4-Methyl-2-pentanone (MIBK)U 0.000478 0.0100
Methyl tert-butyl ether U 0.000101 0.00100
Naphthalene U 0.00100 0.00500
n-Propylbenzene U 0.0000993 0.00100
Styrene U 0.000118 0.00100
1,1,1,2-Tetrachloroethane U 0.000147 0.00100
1,1,2,2-Tetrachloroethane U 0.000133 0.00100
1,1,2-Trichlorotrifluoroethane U 0.000180 0.00100
Tetrachloroethene U 0.000300 0.00100
Toluene U 0.000278 0.00100
1,2,3-Trichlorobenzene U 0.000230 0.00100
1,2,4-Trichlorobenzene U 0.000481 0.00100
1,1,1-Trichloroethane U 0.000149 0.00100
1,1,2-Trichloroethane U 0.000158 0.00100
Trichloroethene U 0.000190 0.00100
Trichlorofluoromethane U 0.000160 0.00500
1,2,3-Trichloropropane U 0.000237 0.00250
1,2,4-Trimethylbenzene U 0.000322 0.00100
1,2,3-Trimethylbenzene U 0.000104 0.00100
1,3,5-Trimethylbenzene U 0.000104 0.00100
Vinyl chloride U 0.000234 0.00100
Xylenes, Total U 0.000174 0.00300
(S) Toluene-d8 104 80.0-120
(S) 4-Bromofluorobenzene 98.8 77.0-126
(S) 1,2-Dichloroethane-d4 96.6 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3882517-1 01/19/23 08:55 • (LCSD) R3882517-2 01/19/23 09:14
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
Acetone 0.0250 0.0293 0.0323 117 129 19.0-160 9.74 27
Acrolein 0.0250 0.0155 0.0154 62.0 61.6 10.0-160 0.647 26
Acrylonitrile 0.0250 0.0292 0.0289 117 116 55.0-149 1.03 20
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1991376
Volatile Organic Compounds (GC/MS) by Method 8260B L1577035-01
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3882517-1 01/19/23 08:55 • (LCSD) R3882517-2 01/19/23 09:14
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
Benzene 0.00500 0.00529 0.00538 106 108 70.0-123 1.69 20
Bromobenzene 0.00500 0.00463 0.00499 92.6 99.8 73.0-121 7.48 20
Bromodichloromethane 0.00500 0.00543 0.00568 109 114 75.0-120 4.50 20
Bromoform 0.00500 0.00521 0.00529 104 106 68.0-132 1.52 20
Bromomethane 0.00500 0.00629 0.00513 126 103 10.0-160 20.3 25
n-Butylbenzene 0.00500 0.00479 0.00513 95.8 103 73.0-125 6.85 20
sec-Butylbenzene 0.00500 0.00488 0.00516 97.6 103 75.0-125 5.58 20
tert-Butylbenzene 0.00500 0.00494 0.00529 98.8 106 76.0-124 6.84 20
Carbon tetrachloride 0.00500 0.00536 0.00522 107 104 68.0-126 2.65 20
Chlorobenzene 0.00500 0.00504 0.00528 101 106 80.0-121 4.65 20
Chlorodibromomethane 0.00500 0.00560 0.00584 112 117 77.0-125 4.20 20
Chloroethane 0.00500 0.00553 0.00481 111 96.2 47.0-150 13.9 20
2-Chloroethyl vinyl ether 0.0250 0.0260 0.0267 104 107 51.0-160 2.66 20
Chloroform 0.00500 0.00512 0.00520 102 104 73.0-120 1.55 20
Chloromethane 0.00500 0.00427 0.00452 85.4 90.4 41.0-142 5.69 20
2-Chlorotoluene 0.00500 0.00486 0.00512 97.2 102 76.0-123 5.21 20
4-Chlorotoluene 0.00500 0.00470 0.00497 94.0 99.4 75.0-122 5.58 20
1,2-Dibromo-3-Chloropropane 0.00500 0.00527 0.00547 105 109 58.0-134 3.72 20
1,2-Dibromoethane 0.00500 0.00531 0.00553 106 111 80.0-122 4.06 20
Dibromomethane 0.00500 0.00533 0.00540 107 108 80.0-120 1.30 20
1,2-Dichlorobenzene 0.00500 0.00508 0.00528 102 106 79.0-121 3.86 20
1,3-Dichlorobenzene 0.00500 0.00494 0.00530 98.8 106 79.0-120 7.03 20
1,4-Dichlorobenzene 0.00500 0.00492 0.00510 98.4 102 79.0-120 3.59 20
Dichlorodifluoromethane 0.00500 0.00343 0.00336 68.6 67.2 51.0-149 2.06 20
1,1-Dichloroethane 0.00500 0.00500 0.00513 100 103 70.0-126 2.57 20
1,2-Dichloroethane 0.00500 0.00529 0.00534 106 107 70.0-128 0.941 20
1,1-Dichloroethene 0.00500 0.00478 0.00483 95.6 96.6 71.0-124 1.04 20
cis-1,2-Dichloroethene 0.00500 0.00516 0.00519 103 104 73.0-120 0.580 20
trans-1,2-Dichloroethene 0.00500 0.00499 0.00505 99.8 101 73.0-120 1.20 20
1,2-Dichloropropane 0.00500 0.00526 0.00544 105 109 77.0-125 3.36 20
1,1-Dichloropropene 0.00500 0.00513 0.00540 103 108 74.0-126 5.13 20
1,3-Dichloropropane 0.00500 0.00520 0.00558 104 112 80.0-120 7.05 20
cis-1,3-Dichloropropene 0.00500 0.00541 0.00552 108 110 80.0-123 2.01 20
trans-1,3-Dichloropropene 0.00500 0.00477 0.00496 95.4 99.2 78.0-124 3.91 20
2,2-Dichloropropane 0.00500 0.00585 0.00545 117 109 58.0-130 7.08 20
Di-isopropyl ether 0.00500 0.00498 0.00497 99.6 99.4 58.0-138 0.201 20
Ethylbenzene 0.00500 0.00506 0.00524 101 105 79.0-123 3.50 20
Hexachloro-1,3-butadiene 0.00500 0.00517 0.00518 103 104 54.0-138 0.193 20
Isopropylbenzene 0.00500 0.00487 0.00514 97.4 103 76.0-127 5.39 20
p-Isopropyltoluene 0.00500 0.00492 0.00520 98.4 104 76.0-125 5.53 20
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG1991376
Volatile Organic Compounds (GC/MS) by Method 8260B L1577035-01
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3882517-1 01/19/23 08:55 • (LCSD) R3882517-2 01/19/23 09:14
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
2-Butanone (MEK)0.0250 0.0297 0.0307 119 123 44.0-160 3.31 20
Methylene Chloride 0.00500 0.00523 0.00515 105 103 67.0-120 1.54 20
4-Methyl-2-pentanone (MIBK)0.0250 0.0264 0.0268 106 107 68.0-142 1.50 20
Methyl tert-butyl ether 0.00500 0.00541 0.00537 108 107 68.0-125 0.742 20
Naphthalene 0.00500 0.00459 0.00462 91.8 92.4 54.0-135 0.651 20
n-Propylbenzene 0.00500 0.00484 0.00510 96.8 102 77.0-124 5.23 20
Styrene 0.00500 0.00488 0.00516 97.6 103 73.0-130 5.58 20
1,1,1,2-Tetrachloroethane 0.00500 0.00526 0.00535 105 107 75.0-125 1.70 20
1,1,2,2-Tetrachloroethane 0.00500 0.00530 0.00541 106 108 65.0-130 2.05 20
1,1,2-Trichlorotrifluoroethane 0.00500 0.00501 0.00476 100 95.2 69.0-132 5.12 20
Tetrachloroethene 0.00500 0.00544 0.00578 109 116 72.0-132 6.06 20
Toluene 0.00500 0.00511 0.00548 102 110 79.0-120 6.99 20
1,2,3-Trichlorobenzene 0.00500 0.00475 0.00454 95.0 90.8 50.0-138 4.52 20
1,2,4-Trichlorobenzene 0.00500 0.00491 0.00485 98.2 97.0 57.0-137 1.23 20
1,1,1-Trichloroethane 0.00500 0.00521 0.00533 104 107 73.0-124 2.28 20
1,1,2-Trichloroethane 0.00500 0.00530 0.00562 106 112 80.0-120 5.86 20
Trichloroethene 0.00500 0.00533 0.00544 107 109 78.0-124 2.04 20
Trichlorofluoromethane 0.00500 0.00540 0.00503 108 101 59.0-147 7.09 20
1,2,3-Trichloropropane 0.00500 0.00539 0.00559 108 112 73.0-130 3.64 20
1,2,4-Trimethylbenzene 0.00500 0.00486 0.00511 97.2 102 76.0-121 5.02 20
1,2,3-Trimethylbenzene 0.00500 0.00482 0.00502 96.4 100 77.0-120 4.07 20
1,3,5-Trimethylbenzene 0.00500 0.00482 0.00511 96.4 102 76.0-122 5.84 20
Vinyl chloride 0.00500 0.00447 0.00452 89.4 90.4 67.0-131 1.11 20
Xylenes, Total 0.0150 0.0152 0.0159 101 106 79.0-123 4.50 20
(S) Toluene-d8 100 103 80.0-120
(S) 4-Bromofluorobenzene 97.3 97.2 77.0-126
(S) 1,2-Dichloroethane-d4 99.3 99.5 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
RDL Reported Detection Limit.
Rec.Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
Dilution
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
J The identification of the analyte is acceptable; the reported value is an estimate.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
Alabama 40660 Nebraska NE-OS-15-05
Alaska 17-026 Nevada TN000032021-1
Arizona AZ0612 New Hampshire 2975
Arkansas 88-0469 New Jersey–NELAP TN002
California 2932 New Mexico ¹TN00003
Colorado TN00003 New York 11742
Connecticut PH-0197 North Carolina Env375
Florida E87487 North Carolina ¹DW21704
Georgia NELAP North Carolina ³41
Georgia ¹923 North Dakota R-140
Idaho TN00003 Ohio–VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
Iowa 364 Pennsylvania 68-02979
Kansas E-10277 Rhode Island LAO00356
Kentucky ¹ ⁶KY90010 South Carolina 84004002
Kentucky ²16 South Dakota n/a
Louisiana AI30792 Tennessee ¹ ⁴2006
Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
Maryland 324 Utah TN000032021-11
Massachusetts M-TN003 Vermont VT2006
Michigan 9958 Virginia 110033
Minnesota 047-999-395 Washington C847
Mississippi TN00003 West Virginia 233
Missouri 340 Wisconsin 998093910
Montana CERT0086 Wyoming A2LA
A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789
A2LA – ISO 17025 ⁵1461.02 DOD 1461.01
Canada 1461.01 USDA P330-15-00234
EPA–Crypto TN00003
ACCREDITATIONS & LOCATIONS

¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable
* Not all certifications held by the laboratory are applicable to the results reported in the attached report.
* Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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