DERR-2025-003804

Facilities | Environmental | Geotechnical | Materials i
Cover Page
Sampling and Analysis Plan
Schovaers Electronics
22 South Jeremy Street
Salt Lake City, Salt Lake County, Utah
EPA Cooperative Agreement #96897201
EPA ACRES IDs #199723
Salt Lake County Brownfields Assessment Grant
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
Prepared for:
Salt Lake County, Utah
2001 S. State Street, Suite S2-100
Salt Lake City, Utah
Facilities | Environmental | Geotechnical | Materials ii
Sampling And Analysis Plan Approval Sheet (A1)
Salt Lake County Brownfields Assessment Grant
EPA Cooperative Agreement No. 96897201
Schovaers Electronics
22 South Jeremy Street
Salt Lake City, Salt Lake County, Utah
April 4, 2025
Approved By
Terracon Project Manager
Date:
Signature
Benjamin B. Bowers
Printed Name
Terracon Project QA/QC Officer
Date:
Signature
Andrew Turner
Printed Name
Salt Lake County (Grantee) Approval:
Date:
Signature
Rachel Boyett
U.S. EPA Project Manager/QA Officer Approval:
Date:
Signature
Kate Gregory__________________________
Printed Name
05/14/2025
Rachel Boyett 05/14/2025
1ate -UeJoUy 05/14/2025
Facilities | Environmental | Geotechnical | Materials iii
Table Of Contents
Sampling And Analysis Plan Approval Sheet (A1) ...................................... ii
Distribution List (A3) ............................................................................. v
List of Acronyms and Abbreviations ....................................................... vi
1.0 Project Management (A) ................................................................. 1
1.1 Project Task/Organization (A4) ..................................................................... 1
1.2 Problem Definition/Background (A5) .............................................................. 1
2.0 Project Background ........................................................................ 3
2.1 Summary of Impacts ................................................................................... 4
2.2 Project/Task Description (A6) ....................................................................... 6
2.3 Quality Objectives and Criteria (A7) ............................................................... 9
2.4 Specialized Training (A8)............................................................................ 12
2.5 Documentation and Records (A9) ................................................................ 12
3.0 Data Generation/Acquisition (B) ..................................................... 12
3.1 Sampling Process Design (B1) .................................................................... 12
3.2 Sampling Methods (B2) .............................................................................. 15
3.3 Sample Handling and Custody (B3) ............................................................. 15
3.4 Analytical Methods (B4) ............................................................................. 16
3.5 Quality Control (B5) .................................................................................. 16
3.6 Instrument/Equipment Testing, Inspection, and Maintenance (B6) .................. 16
3.7 Instrument/Equipment Calibration and Frequency (B7) .................................. 16
3.8 Inspection/Acceptance of Supplies and Consumables (B8) .............................. 16
3.9 Use of Existing Data (Non-direct Measurements) (B9) .................................... 16
3.10 Data Management (B10) ............................................................................ 16
4.0 Assessment And Oversight (C) ....................................................... 16
4.1 Assessments and Response Actions (C1) ...................................................... 16
4.2 Reports to Management (C2) ...................................................................... 16
5.0 Data Validation And Usability (D) ................................................... 17
5.1 Data Review, Verification, and Validation (D1) .............................................. 17
5.2 Verification and Usability Methods (D2) ........................................................ 17
6.0 References .................................................................................. 17
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Appendices
Appendix A: Exhibits
Exhibit 1 Topographic Site Overview
Exhibit 2 Soil Exceedance Map
Exhibit 3 Groundwater Exceedance Map
Exhibit 4 Soil Vapor Exceedance Map
Exhibit 5 Proposed Investigation and Remediation Locations
Appendix B: Tables
Table 1A Screening Levels for Contaminants of Concern—VOCs
Table 1B VISLs for VOCs in Soil Gas
Table 1C VISLs for VOCs in Indoor Air
Table 1D Screening Levels for Contaminants of Concern - ACM
Table 2 Analytical Method Summary
Table 3 Summary of Sample Locations
Appendix C: Previous Sampling Event Results
Table 4A Metals and pH in Soil
Table 4B Volatile Organic Compounds in Soil
Table 4C Dissolved Metals in Groundwater
Table 4D Volatile Organic Compounds in Groundwater
Table 4E Volatile Organic Compounds in Soil Vapor
Appendix D: Terracon Standard Operating Procedures (SOPs)
E2140 Indoor Air Sample Collection
No.2005 Asbestos Bulk Sample Collection
Facilities | Environmental | Geotechnical | Materials v
Distribution List (A3)
Kate Gregory
Brownfields Project Manager
U.S. EPA Region 8
Mail Code: 8LCT-BR
1595 Wynkoop Street
Denver, CO 80202-1129
[phone]
[e-mail]
Joseph Katz
Utah Department of Environmental
Quality/Division of Environmental
Response and Remediation
Project Manager
P.O. Box 144840
Salt Lake City, UT 84114-4840
[phone]
[e-mail]
Rachel Boyett
Salt Lake County
Program Manager
Office of Regional Development
2001 South State Street S2-100
Salt Lake City, UT 84114
[phone]
[e-mail]
Benjamin B. Bowers
Consultant Grant Manager
Terracon Consultants, Inc.
6952 South High Tech Drive, Suite B
Midvale, UT 84047
[phone]
[e-mail]
Andrew Turner
Consultant QA/QC Officer
Terracon Consultants, Inc.
6952 South High Tech Drive, Suite B
Midvale, UT 84047
[phone]
[e-mail]
Rebecca King
Environmental Laboratory: Pace Analytical
Laboratory Quality Assurance Director
12065 Lebanon Road
Mt. Juliet, Tennessee 37207
[phone]
[e-mail]
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List of Acronyms and Abbreviations
ACM Asbestos Containing Materials
APN Assessor Parcel Number
bgs below ground surface
DERR Division of Environmental Response and Remediation
DQI Data Quality Indicators
DQO Data Quality Objectives
DRO Diesel Range Organics
DTW Depth-To-Water
US EPA United States Environmental Protection Agency
ESA Environmental Site Assessment
GIS Geographic Information System
GRO Gasoline Range Organics
ISL Initial Screening Level
LSI Limited Site Investigation
MCL Maximum Contaminant Level
MDL Method Detection Limit
mg/kg milligrams per kilogram (or parts per million)
mg/l milligrams per liter (or parts per million)
NELAP National Environmental Laboratory Accreditation Program
PAH Polycyclic Aromatic Hydrocarbons
PID photoionization detector
PFAS Per-and Polyfluoroalkyl Substances
QA Quality Assurance
QAPP Quality Assurance Project Plan
QC Quality Control
RCRA Resource Conservation and Recovery Act
RL Laboratory Reporting Limit a.k.a. practicable quantification limit
RSL Regional Screening Level
SAP Sampling and Analysis Plan
SOP Standard Operating Procedure
TGC Target Groundwater Concentration
Tier 1 Tier 1 Screening Level
TOC Top-Of-Casing
TPH Total Petroleum Hydrocarbons
TRPH Total Recoverable Petroleum Hydrocarbons
TSSNSGC Target Sub-Slab and Near-source Soil Gas Concentration
DEQ Utah Department of Environmental Quality
UST Underground Storage Tank
VISL Vapor Intrusion Screening Level for Residential and Commercial use scenarios
VOC Volatile Organic Compounds
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
Facilities | Environmental | Geotechnical | Materials 1
This document is not a stand-alone quality assurance document and relies on the EPA-
approved documents referenced, consistent with EPA Region 8 QA Document Review
Crosswalk instructions.
1.0 Project Management (A)
1.1 Project Task/Organization (A4)
Salt Lake County (County) is responsible for overall implementation of the Schovaers
Electronics Property Brownfields Assessment Project. Terracon Consultants, Inc. (Terracon)
will perform and coordinate site assessment activities that will include a Phase II
Environmental Site Assessment (Phase II ESA) at the site located at 22 South Jeremy Street
in Salt Lake City, Utah herein referenced collectively as the “site.” Identification of key
personnel involved in the Salt Lake County Brownfields Grant project is provided in Section
A4 of the Community-Wide Quality Assurance Project Plan (QAPP; Terracon, 2024a).
Pertinent areas of this Sampling and Analysis Plan (SAP) as they relate to greater detail or
reference in the United States Environmental Protection Agency (US EPA)-approved QAPP,
are indicated by QAPP designations in parentheses in section headers.
1.2 Problem Definition/Background (A5)
A Brownfield is a real property; the expansion, redevelopment, or reuse of which may be
complicated by the real or potential presence of a hazardous substance, pollutant, or
contaminant. Salt Lake County (the Grantee) is a recipient of an US EPA community-wide
assessment grant for a 104(k) Assessment to inventory, characterize, assess, and conduct
cleanup planning along with public outreach activities for eligible Brownfield sites located
within the County boundaries, including, but not limited to metro townships, incorporated
cities, and unincorporated areas. The Brownfield Assessment Grant program helps evaluate
select County properties that have an established history of petroleum and/or hazardous
substance impacts where significant uncertainty exists due to real or perceived
contamination and will benefit from Brownfield grant funds to support a range of
environmental assessment work and cleanup planning projects.
The grantee plans to repurpose the property for retail/commercial or light industrial use to
increase neighborhood vibrancy along the new Folsom Trail.
Multiple investigations were conducted at the site as follows:
Phase I Environmental Assessment, Salt Lake Redevelopment Agency Blight Study,
North Temple Street Corridor Blight Study Area N4
South Temple to 100 South and 800 West to 900 West, Salt Lake City, Utah
Sampling and Analysis Plan
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April 4, 2025 | Terracon Project No. 61237386 Task 3.16
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Dated: June 21, 2010
Prepared by: Wasatch Environmental, Inc.
For: Lewis Young Robertson & Burningham, Inc.
Phase I Environmental Assessment, Schovaers Electronics
22 South Jeremy Street, Salt Lake City, Salt Lake County, Utah
Dated: August 31, 2015
Prepared by: Terracon
For: Redevelopment Agency of Salt Lake City
Asbestos and Hazardous Materials Survey, North Temple Brownfields Assessment, EPA
Cooperative Agreement No. 96809601, Hazardous Substance Grant for Redevelopment
Agency of Salt Lake City, Schovaers Electronics Facility
22 South Jeremy Street, Salt Lake City, Utah
Dated: January 18, 2016
Prepared by: Terracon
For: Redevelopment Agency of Salt Lake City
Phase II Environmental Assessment, North Temple Brownfields Assessment, EPA
Cooperative Agreement No. 96809601, Hazardous Substance Grant for Redevelopment
Agency of Salt Lake City, Schovaers Electronics Facility
22 South Jeremy Street, Salt Lake City, Utah
Dated: February 8, 2016
Prepared by: Terracon
For: Redevelopment Agency of Salt Lake City
Phase I Environmental Assessment, Schovaers Electronics
22 South Jeremy Street, Salt Lake City, Salt Lake County, Utah
Dated: February 14, 2018
Prepared by: Terracon
For: Salt Lake County
Phase II Environmental Assessment (Final), Salt Lake County Brownfields Assessment,
EPA Cooperative Agreement No. 96835701, Hazardous Materials and Petroleum Grant
for Salt Lake County, Schovaers Electronics
22 South Jeremy Street, Salt Lake City, Salt Lake County, Utah
Dated: January 9, 2019
Prepared by: Terracon
For: Salt Lake County
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
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Phase I Environmental Assessment
22 South Jeremy Street, Salt Lake City, Salt Lake County, Utah
Dated: July 8, 2022
Prepared by: Terracon
For: Redevelopment Agency of Salt Lake City
This SAP pertains to and sets forth the site assessment activities and field sampling
locations designed to further evaluate the real or potential presence of hazardous
substances, pollutants, and contaminants at the site. A topographic overview of the site is
depicted on Exhibit 1 (Appendix A). Previous sample event soil, groundwater, and soil vapor
exceedance maps are depicted on Exhibits 2, 3, and 4 (Appendix A)and sample results are
provided in Appendix C. The proposed Phase II ESA sampling locations are detailed on
Exhibit 5 (Appendix A). This SAP includes a discussion of specific site objectives, site
description, and details regarding site-specific field sampling. It is designed to be used in
conjunction with the above-referenced Community-Wide QAPP. The QAPP describes data
collection procedures, analytical testing, quality assurance/quality control (QA/QC)
activities, and data evaluation processes to ensure that appropriate levels of data quality
are obtained for field sampling, testing, and analytical activities.
2.0 Project Background
The site is located at 22 South Jeremy Street, Salt Lake City, Utah (Exhibit 1; Appendix A).
The site is an approximate 0.34-acre parcel of land (Parcel ID. 15-02-204-007-0000), which
is currently owned by Salt Lake City Redevelopment Agency (SLCRDA). The site contains an
approximate 6,000 square-foot (sq-ft) structure that is currently vacant. An approximately
306 sq-ft wood, concrete block, and concrete slab on grade loading dock is attached to the
north portion of the structure. An approximately 55 sq-ft wooden shed is located adjacent to
the west of the loading dock. An approximately 672 sq-ft wooden garage is located in the
northwest portion of the site, adjacent to the west-adjacent building (Exhibit 5; Appendix A).
The site was used as an electroplating facility from 1977 to 2017 and was surrounded by
other industrial facilities, including a decorative plating company, an autobody shop, a
forge, and a chemical company. A railroad was formerly located adjacent to the south of the
site in the present-day Folsom Trail alignment.
The former Schovaers site in the target area of the SLCRDA’s “North Temple Project Area.”
With its industrial nature and many derelict sites, the target area has struggled
economically and environmentally for decades. It encompasses some of Salt Lake City’s
most socioeconomically underserved communities, with numerous properties affected by
contaminants associated with hazardous substances, particulate matter, and petroleum.
Once cleaned up and repurposed, the former Schovaers site will be a catalytic development
that furthers the City’s and community’s goal of transforming the area into a walkable,
Sampling and Analysis Plan
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mixed-use district. The site is adjacent to the Folsom Trail—a rails-to-trails project recently
completed by Salt Lake City—which connects the Jordan River Parkway and North Temple
Project Area to downtown Salt Lake City.
Historical Information
The site was developed for residential use from at least 1898 through the mid-1940s, when
the residences were demolished. The current commercial structure was constructed in 1956.
The building was originally occupied by an electrical supply company, then a wholesale
upholstery business prior to Schovaers Electronics occupying the building from 1977
through April 2017. The building was occupied by an appliance store from 2019 through
2022, after which it has remained vacant.
Soil, groundwater, and soil vapor impacts above US EPA and Utah Department of
Environmental Quality (DEQ) regulatory standards for metals and volatile organic
compounds (VOCs) were identified during previous site investigations. Figures showing the
soil, groundwater and soil vapor exceedances from previous site investigations are depicted
on Exhibits 2, 3, and 4 (Appendix A). Additionally, previous sample results for soil,
groundwater, and soil vapor are provided in Appendix C.
Surrounding properties of historical or current environmental concern include documented
hexavalent chromium and 1,1,1, trichlororethane (TCA) impacts at the former north-
adjacent metal plating facility; potential impacts associated with the former south-adjacent
railroad operation, laundry equipment sales, and automotive repair facilities; former
northeast-adjacent chemical, soap, and laboratory facilities; a forge operated on the east-
adjacent property; and flooring and recycling facilities operated adjacent to the west.
2.1 Summary of Impacts
A general summary of impacts identified in previous assessments conducted at the site are
described below.
Soils
Arsenic was reported at concentrations above the EPA Industrial Regional Screening Level
(RSL) in soil samples collected from the site at depths ranging from 1 to 11 feet below
ground surface(bgs). The majority of the arsenic concentrations appeared typical of arsenic
concentrations encountered within the Salt Lake Valley; however, one sample near the
interior plating room sump appeared indicative of metal contamination. Trichloroethene
(TCE) was reported in one sample collected from the same sampling location adjacent to the
sump at a concentration above the US EPA Industrial RSL. A map showing the soil
exceedance sample locations is depicted in Exhibit 2 (Appendix A).
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Groundwater
Concentrations of TCE in multiple groundwater samples located in the southwest and west
portions of the site exceeded the US EPA Maximum Contaminant Level (MCL) and Target
Groundwater Concentration (TGC) Vapor Intrusion Screening Level (VISL) for a Commercial
exposure scenario. Additional groundwater samples located in the same general area also
exceeded the US EPA Tapwater RSL or TGC VISL for a residential exposure scenario.
Dissolved arsenic and hexavalent chromium were reported in groundwater samples at
concentrations above the US EPA Tapwater RSLs but below their respective US EPA MCLs. A
map showing the groundwater exceedance sample locations is depicted in Exhibit 3
(Appendix A).
Soil Vapor
Concentrations of TCE in each of the soil vapor samples collected from the site exceeded the
US EPA Commercial and/or Residential VISLs. Naphthalene was reported in one sub-slab
vapor sample at a concentration above the US EPA Commercial VISL and in another sub-
slab vapor sample at a concentration above the US EPA Residential VISL. A map showing
the commercial soil vapor exceedance sample locations is depicted in Exhibit 4 (Appendix A).
Based on the US EPA regulatory screening criteria changes as of November 2024, some of
the previously-defined constituents of concern no longer exceed the applicable regulatory
criteria. This information is necessary to develop and guide remediation actions and cleanup
plans.
Asbestos in Building Materials Re-Inspection
Terracon conducted an asbestos and hazardous materials survey report for the site dated
January 16, 2016. Asbestos containing material (ACM) was identified in following building
materials at the site:
White gypsum board wall system (front office)—2,207 square feet
White gypsum board wall system (back production areas)—9,400 square feet
Green and white 9 inches by 9 inches floor tile and associated black mastic—1,100
square feet
Blue floral pattern vinyl sheet flooring and black mastic—82 square feet
White windowpane glazing—266 linear feet
Gray corrugated cement panel roofing—335 square feet
Black roofing lashing/penetration tar—330 square feet
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
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2.1.1 Regulatory Standards and Criteria
The laboratory analytical results will be compared to regulatory guidance and standards
compliant with Section A7.2 of the QAPP.
Groundwater sample results will be compared to the following regulatory guidance and
standards:
US EPA Maximum Contaminant Levels (MCLs)
US EPA Target Groundwater Concentrations (TGC), Vapor Intrusion Screening Level
(VISL) for Residential and Commercial use scenarios
Sub-slab vapor sample results will be compared to the following regulatory guidance and
standards:
US EPA Target Sub-Slab and Near-source Soil Gas Concentrations (TSSNSGC) VISLs
for Residential and Commercial use scenarios
Indoor air samples will be compared to the following regulatory guidance and standards:
US EPAs Indoor Air values for Residential and Commercial exposure scenarios
Samples of building materials will be collected (if required) for asbestos analysis and will be
compared to the following regulatory guidance and standards:
Asbestos Hazard Emergency Response Act (AHERA) protocols, with comparison of
results to regulatory guidance and standards at U.S. EPA 40 CFR Part 60 Subpart M
(Asbestos NESHAP) and Utah Department of Environmental Quality, Division of Air
Quality standards at UAC R307-801.
The tables in (Appendix B)itemize the screening levels to be used for comparisons for each
media to support project decisions regarding cleanup planning for redevelopment.
2.2 Project/Task Description (A6)
The proposed Scope of Services described in this SAP are intended to gather the necessary
data to evaluate the current environmental impacts and risks to site users from
contaminants in groundwater, soil gas, indoor air quality, and asbestos containing building
materials at the site. Potential redevelopment at the site may include retail/commercial or
light industrial use, utilizing the current building.
2.2.1 Groundwater Sampling
To evaluate the current concentrations of VOCs in groundwater at the site, groundwater
samples will be collected from the installed two-inch PVC monitoring wells. Groundwater is
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
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expected to flow generally toward the southwest, although previous investigations in the
area by others have estimated flow directions ranging from southerly to northwesterly.
Groundwater flow direction will be evaluated under this SAP.
2.2.2 Soil Vapor/Indoor Air Sampling
To assess the current potential for vapor intrusion into the building and aid in the
appropriate design to mitigate vapor intrusion, sub-slab vapor and indoor air sampling will
be conducted inside the building. Exhibit 5 (Appendix A) shows the proposed soil gas and
indoor air sampling locations.
2.2.3 Asbestos Re-inspection
Terracon will mobilize a State of Utah-certified asbestos building inspector to conduct an
asbestos reinspection of the building. Terracon will review and update the previous report
(Terracon report and project number AL127481-4C Dated January 16, 2016), as necessary
by an inspector who is certified according to R307-801-6 and working for a company
certified according to R307-801-5 which may include, sampling suspect materials not
included in the 2016 report, and / or identifying ACM that may no longer present in the
building. The reinspection will be conducted as required by US EPA regulation 40 CFR Part
61, National Emission Standards for Hazardous Air Pollutants (NESHAP), and the State of
Utah Department of Environmental Quality, DAQ Asbestos Rule. Suspect materials will be
physically assessed for friability and evidence of damage or degradation. Samples of each
suspect ACM not included in the previous report will be collected for laboratory analysis.
Bulk sample collection will be conducted in accordance with the sampling protocols outlined
in EPA 40 CFR 763.86.
Sample collection will result in some isolated damage to the building materials; however,
attempts will be made to limit such damage to the extent necessary for sample collection.
Terracon will not perform sampling that requires destructive activities such as knocking
holes in walls, dismantling equipment, or removing protective coverings. Sampling will not
include suspect materials that cannot be safely reached with available ladders or man-lifts.
2.2.4 Project Schedule
The tentative project schedule is provided in the table below. Actual dates may vary
depending on subcontractor availability
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
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Activity Planned Start Planned Completion
Groundwater, vapor and
asbestos re-inspection
sampling
Within 3 weeks following SAP
approval
Within 10 days following
start of sampling
Laboratory analyses Within 1–2 days following
sampling completion
Within 10-15 days
following start of
laboratory analyses
Report preparation Within 1 week following receipt
of analytical results
Within 4 weeks following
receipt of analytical
results
US EPA and DEQ
review of report
Within 2 weeks of receipt of draft
report
Within 3 weeks after
receipt of draft report
Issue final report Within 1 week of receipt of US EPA/DEQ comments on draft
report
*No field work will be conducted until formal EPA approval of the SAP is received from the agency and
documented.
2.2.5 Field Work and Sample Collection
Field sampling will include the installation of five, two-inch PVC monitoring wells ranging in
depth from approximately 15 to 20 feet bgs with 10-foot, 0.010-inch machine slotted
screens to allow for the collection of groundwater samples. Four sub-slab vapor pins and
four indoor air samples will be collected inside the on-site structure to allow for the
collection of soil gas and indoor air samples.
Field duplicates will be collected at a rate of 10 percent (groundwater only) with one trip
blank (laboratory-supplied blank). Boring logs and field notes will be recorded during the
fieldwork. Soil cores will be field screened with a photoionization detector (PID) to assess
potential volatile organic vapors. If elevated PID reading are encountered during the field
screening of soil cores, opportunistic soil samples for VOCs may be collected as determined
by the field staff. Exhibit 5 (Appendix A) depicts the approximate proposed groundwater,
sub-slab vapor, and indoor air sampling locations.
Work will be conducted commensurate with the requirements outlined in the approved
QAPP. Before mobilizing to the site to begin assessment activities, the property access
agreement will be executed with the property owner, and the public utility location service
(Blue Stakes of Utah) will be notified at least 72 hours before commencing drilling activities.
In addition, a private utility location service will be used to locate potential utilities and/or
other subsurface obstacles at and near the proposed drilling locations.
The following is a list of the contaminants of concern being analyzed at each boring location:
Groundwater Samples:
VOCs: Five groundwater samples will be analyzed for VOCs.
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Sub-Slab Vapor and Indoor Air Samples:
VOCs: Four sub-slab vapor samples and four indoor air samples for VOCs will be collected
from the on-site structure.
Asbestos Materials Re-Inspection
Asbestos samples are not anticipated to be collected and analyzed in association with the
re-inspection asbestos survey of the structure, as no known newbuilding material have been
added to the structure since the previous asbestos sampling survey was performed at the
site in 2016. However, if new building material is identified in the structure, asbestos bulk
samples will need to be collected. Terracon anticipates no more than 9 bulk sample
collections to be collected (if needed) during this assessment.
A laboratory accredited by the National Voluntary Laboratory Accreditation Program
(NVLAP), will analyze bulk material samples by visual estimation using Polarized Light
Microscopy (PLM). If PLM results merit re-analysis by the more quantitative point-counting
technique, additional analysis by this method will be conducted per NESHAP requirements.
2.3 Quality Objectives and Criteria (A7)
As discussed in the QAPP, Data Quality Objectives (DQOs) have been developed for
sampling and analysis activities. DQOs identify the level of quality that the data must meet
to provide a sound basis for decision-making activities during the project.
2.3.1 DQOs—Groundwater, Soil Vapor, Indoor Air Sampling, and
Asbestos in building Materials
State the Problem:
Previous investigations have indicated the presence of impacted soil, groundwater,
and soil gas relating to former plating operations conducted at the site. Sampling of
groundwater, soil gas vapors, and indoor air quality is required to guide future
remedial actions at the site.
Before a portion of the plating room wall can be demolished and redevelopment can
begin, updated information is needed regarding ACM that may be present in the
existing structures.
Identify the decisions:
Samples of groundwater, soil gas vapor, and indoor air will be collected for
laboratory analysis. Analytical data will be compared to relevant screening levels to
determine what actions may be needed to support cleanup planning for
redevelopment.
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An updated assessment will be conducted to assess whether the site structures
contain ACM that may require abatement or specialized management prior to
implementation of the remediation event and redevelopment.
Identify inputs to the decision:
Analytical results will be obtained from the analysis of the samples for applicable
chemicals of concern as detailed in Section 2.0 Data Generation/ Acquisition (B) of
this SAP. Certified Inspectors will conduct visual assessments of the buildings to
identify materials suspected of being ACM.
Define the boundary of the project:
The boundary of the study area is the area identified as approximately 0.34 acres of
land located at 22 South Jeremy Street in Salt Lake City, Utah. The site is further
identified as Salt Lake County Parcel ID 15-02-204-007-0000. The site contains a
warehouse building that was constructed in 1956 and is approximately 6,000 square
feet in size, constructed of concrete block walls, brick, and slab on grade concrete
floors. An approximately 306 square-foot (sq-ft) wood, concrete block, and concrete
slab on grade, loading dock is attached to the north portion of the building. An
approximately 55 sq-ft wooden shed is located adjacent to the west of the loading
dock. An approximately 672 sq-ft wooden garage is located in the northwest portion
of the site, adjacent to the west-adjacent building. A site diagram is shown in
Exhibit 5 (Appendix A).
Develop the decision rule:
Data generated during this investigation will be compared to applicable screening
levels outlined in Section 1.2.3. This evaluation will allow for the update and
development of the remedial action plan.
Specify limits on decision errors:
Sampling locations are biased towards locations where impacts are known or
suspected based on previous site investigations and where current information is
required to finalized the remedial action plan. Decision errors will also be controlled
by laboratory MDLs that are lower than the corresponding screening levels for
various media as detailed in (Appendix B) of this SAP. For a small percentage of
analytes, cases may arise where a screening level is below the lowest practically
attainable MDL and a “non-detect” value is reported. In such cases, the relative
degree of uncertainty will be stated with consideration of the presence or absence of
other associated analytes within the same sample.
Optimize the design for obtaining data:
The proposed sampling locations and analytical program have been selected to
update the current concentrations of environmental impacts previously identified on
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the property based on previous sample data collected from the site. This information
is necessary to develop and guide remediation actions and cleanup plans.
The proposed sampling and analytical program have been selected to identify new
ACM in building materials within the structure. This information is necessary to
support development of abatement plans.
2.3.2 Performance/Measurement Criteria
Performance and measurement criteria are detailed in Section A7 of the QAPP. Data quality
indicators (DQIs) will be used to evaluate the performance and measurement criteria in
terms of precision (analytical and/or total measurement error determination), accuracy,
completeness, representativeness, and comparability. Concentrations of the parameters of
interest are anticipated to range from levels below the method detection limits to
concentrations that exceed the screening levels.
2.3.3 Comparative Screening Levels
Tables in Appendix B itemize the screening levels to be used for comparisons for each media
to support project decisions regarding cleanup planning for redevelopment.
For comparison of detected analytes that have multiple screening levels, the order of
precedence of comparative screening levels will vary by media, contaminant type, and
applicability. The detection limits for the media will be in accordance with the established
analytical methods. The analytical methods for each contaminant type are summarized in
Table 2 (Appendix B). Pace Analytical will perform the groundwater analyses. H&P Mobile
Geochemistry (H&P) is expected to perform the soil gas and indoor air sample analyses.
If asbestos sample analysis is needed, analytical results for suspect ACM bulk building
materials will be evaluated to support project decisions regarding the potential need for
additional investigation, abatement, or materials management/disposal as part of
subsequent demolition and site redevelopment activities. Suspect ACM is identified as non-
ACM if the initial laboratory analysis using PLM evaluates the asbestos content as “none
detected,” or if a subsequent point count of the material initially evaluated as greater than
“none detected” by PLM analysis shows that the material contains 1% or less asbestos. The
NESHAP Standard specifies that if the asbestos content of a sample is less than 10%, the
asbestos content of the sample must either be verified by “point counting,” or the material
must be classified as ACM. Point counting is a process of examining materials under a
polarizing microscope, using an eyepiece reticule that superimposes a grid of points over
the field of view; 400 points are examined. If PLM results are less than 10%, the samples
will be submitted for point counting or classified as ACM.
Table 1D (Appendix B) itemizes the screening levels to be used for comparisons for ACM to
support project decisions regarding cleanup planning for redevelopment. The detection
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
Facilities | Environmental | Geotechnical | Materials 12
limits for building material samples will be in accordance with the established analytical
methods provided in Table 2 (Appendix B).Eurofins EMLab P&K Analytical Testing
Laboratories (EMLab P&K) will perform the ACM testing. A copy of EMLab P&K’s Quality
Assurance Manual are provided in Appendix D.
2.4 Specialized Training (A8)
Details of training and certification requirements are provided in Section A8 of the QAPP. A
DEQ-certified UST Groundwater and Soil Sampler will collect the groundwater samples for
sites where underground petroleum storage tanks are known or suspected.
Training and certification applicable to the scope of this SAP pertaining to asbestos include
the requirement that the Terracon personnel who collect samples of potential asbestos-
containing material will be Certified Asbestos Building Inspectors as required by Utah
Division of Air Quality Rules at UAC R307-801.
2.5 Documentation and Records (A9)
Details of documentation and recording procedures are provided in Section A9 of the QAPP.
3.0 Data Generation/Acquisition (B)
3.1 Sampling Process Design (B1)
The sampling strategy for groundwater, soil gas, indoor air, and ACM has been designed to
assess the current concentrations of contamination at the site and to provide guidance for
the planned future remedial actions at the site.
The exact location of each boring will be dictated by drilling and equipment access,
constraints, and safety. It has been assumed that all boring locations will be accessible. In
instances where locations are hindered by subsurface utilities or other obstacles not
anticipated, relocation and Geographic Information System (GIS) documentation will be
generated, the reason for re-location will be documented, and new GIS coordinates will be
generated for the relocated boring.
Groundwater, soil vapor, and indoor air samples will be analyzed for select regulated
contaminants as shown on Table 3 (Appendix B).
Groundwater samples will be collected from each of the monitoring wells for analysis
of VOCs.
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
Facilities | Environmental | Geotechnical | Materials 13
Sub-slab vapor samples will be collected from each of the soil gas probes for
analysis of VOCs by EPA Method TO-15.
Indoor air samples will be collected from inside the on-site structure and will be
analyzed for VOCs by EPA Method TO-15.
Groundwater Sampling
A baseline groundwater sampling event will be conducted prior to implementation of
remedial actions. The data will be used to assess existing groundwater conditions and the
potential for off-site migration of TCE-impacted groundwater.
Five, two-inch PVC monitoring wells will be installed using a direct push drill rig for
groundwater monitoring purposes. The monitoring wells will be installed to depths ranging
from approximately 15 to 20 feet bgs with 10-foot, 0.010-inch machine slotted screens. The
monitoring well annulus will be backfilled with 10/20 silica sand up to one foot above the
screened interval, followed by a hydrated bentonite seal up to the well vault. Flush-mount,
traffic-rated well vaults will be installed in concrete at the ground surface. The wells will be
developed by removing at least three well volumes at least 24 hours after installation, and
the top-of-casings will be surveyed. Boring logs and field notes will be recorded during the
fieldwork. Soil samples will be field screened with a PID to assess potential volatile organic
vapors. If elevated PID reading are encountered during the field screening of soil cores,
opportunistic soil samples for VOCs may be collected as determined by the field staff.. Grab
groundwater samples will be collected using new, disposable bailers. Samples will be
delivered to a Utah-certified analytical laboratory within holding times. Groundwater
samples will be analyzed for VOCs by US EPA Method 8260. Laboratory analytical quality
control procedures are detailed in the approved QAPP.
The proposed monitoring well locations are depicted on Exhibit 5 (Appendix A). A
description of the proposed sample locations, sample types, sample naming convention, and
laboratory analyses is presented in Table 3 (Appendix B). Field duplicates will be collected at
a rate of 10 percent per analyte with one trip blank (laboratory-supplied blank) per sample
shipment.
Soil cuttings will be disposed on the ground surface within the site boundaries if evidence of
free-phase liquids is not observed. Based on the trichloroethene detection exceeding the
MCL in previous groundwater samples at the site, development water will be containerized
and properly disposed and/or characterized prior to disposal.
Depth-to-groundwater will be measured prior to sample collection for assessment of the
groundwater gradient. Sampling procedures will follow Terracon Standard Operating
Procedures (SOPs) included in the Quality Assurance Project Plan. Groundwater top-of-
casing (TOC) elevations will be surveyed, and depth-to-water (DTW) measurements will be
collected to determine relative groundwater elevations and groundwater flow direction.
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
Facilities | Environmental | Geotechnical | Materials 14
Sub-Slab Soil Vapor
A baseline vapor sampling event will be conducted prior to implementation of remedial
actions. The data will be used to assess current vapor conditions and the potential for vapor
intrusion.
Four sub-slab vapor pins will be installed within the building. The vapor points will be
completed with a Vapor PinTM assembly consisting of a permanent flush-mount stainless
steel barb fitting with a silicone sleeve to seal the hole. The sub-slab vapor points will be
allowed to equilibrate at least twenty-four hours prior to sample collection. Each sample will
be collected over a an approximate 5-minute period using individually-certified, 1-liter
Summa™ stainless steel canisters supplied by H&P, or an equivalent Utah-certified
analytical laboratory. The sub-slab vapor samples will be analyzed for VOCs by EPA Method
TO-15.
Indoor Air Samples
Four indoor air samples, co-located with vapor pin sample locations, will be collected for
assessment of VOCs in ambient indoor air. The canister sample inlets will be placed within a
typical breathing zone height of approximately three to five feet above the floor. The
ambient air samples will be collected over a 24-hour period using a flow-control device
affixed to an individually-certified, 6-liter capacity, Summa stainless steel canister supplied
by H&P, or an equivalent Utah-certified analytical laboratory. The indoor air samples will be
analyzed for VOCs by US EPA Method TO-15.
Asbestos Sampling (If needed)
Asbestos samples are not anticipated to be collected and analyzed in association with the
re-inspection asbestos survey of the structure, as no known newbuilding material have been
added to the structure since the previous asbestos sampling survey was performed at the
site in 2016. However, if new building material is identified in the structure, asbestos bulk
samples will need to be collected. Terracon anticipates no more than 9 bulk sample
collections to be collected (if needed) during this assessment.
Field sampling procedures for regulated building materials that are not included in the US
EPA-approved QAPP will be performed in accordance with this section of the SAP and in
accordance with the appropriate Terracon SOPs provided in Appendix D of this SAP. Building
materials in or on the on-site structures may be sampled to evaluate the potential presence
of ACM. The Utah-certified Asbestos Inspector will conduct a visual assessment of the
buildings to identify whether new suspect materials have been added since the first
inspection, such as wall systems, ceilings, floor tiles, sheet vinyl flooring, and mastics,
surfacing materials, Transite®, etc. Suspect materials will be physically assessed for friability
and evidence of damage or degradation. Samples of suspect ACM may be collected for
confirmation laboratory analysis. Bulk sample collection will be conducted in general
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
Facilities | Environmental | Geotechnical | Materials 15
accordance with the sampling protocols outlined in US EPA 40 CFR Part 763 Subpart E
763.86, AHERA.
The proposed sampling locations are depicted on Exhibit 5 (Appendix A). A description of
the proposed sample locations, sample types, sample naming convention, and laboratory
analyses is presented in Table 3 (Appendix B). Field duplicates will be collected at a rate of
10 percent (not applicable for soil gas) with one trip blank (laboratory-supplied blank) per
sample shipment (VOCs only).
Any deviations from this SAP will be evaluated in terms of their effect on data usability. The
degree of sample deviation beyond the acceptance limit will be evaluated for its potential
effect on data usability, contribution to the quality of the reduced and analyzed data, and on
decision-making for the project. The final report to EPA and UDEQ DERR will include a
discussion of any data usability effects due to deviations from the SAP or QA goals
summarized by the Consultant QA/QC Officer.
3.2 Sampling Methods (B2)
3.2.1 Groundwater Sampling
Five groundwater samples will be collected from monitoring wells MW-1 through MW-5
following the procedures detailed in SOP 12,Groundwater Monitoring Well Sampling,
provided in Appendix B of the US EPA-approved QAPP.
3.2.2 Sub-Slab Vapor Sampling
Four sub-slab vapor samples will be collected following the procedures detailed in Terracon
SOP E.2128,Sub-Slab Vapor Sampling in Appendix B of the US EPA-approved QAPP.
3.2.3 Indoor Air Quality Sampling
Four indoor air samples will be collected following the procedures detailed in Terracon SOP
E.2140,Indoor Air Sampling (Appendix D).
3.2.4 Asbestos Sampling
It is not anticipated that asbestos sample collection will be required during the re-inspection
survey. However, should sample collection be required, samples will be collected following
the procedures detailed in Terracon SOP No. 2005,Asbestos Bulk Sample Collection
(Appendix D).
3.3 Sample Handling and Custody (B3)
Details of sample handling and custody requirements are provided in Section B3 of the
QAPP.
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
Facilities | Environmental | Geotechnical | Materials 16
3.4 Analytical Methods (B4)
Details for analytical method requirements are provided in Section B4 of the QAPP.
3.5 Quality Control (B5)
Details for quality control requirements are provided in Section B5 of the QAPP.
3.6 Instrument/Equipment Testing, Inspection, and Maintenance (B6)
Requirements for instrument and equipment testing, inspection, and maintenance are
provided in Section B6 of the QAPP.
3.7 Instrument/Equipment Calibration and Frequency (B7)
Requirements for instrument and equipment calibration and frequency are provided in
Section B7 of the QAPP.
3.8 Inspection/Acceptance of Supplies and Consumables (B8)
Details for inspection and acceptance of supplies and consumables are provided in Section
B8 of the QAPP.
3.9 Use of Existing Data (Non-direct Measurements) (B9)
Details for use of existing data are provided in Section B9 of the QAPP.
3.10 Data Management (B10)
Details for data management are provided in Section B10 of the QAPP.
4.0 Assessment And Oversight (C)
4.1 Assessments and Response Actions (C1)
Details for assessment and response actions are provided in Section C1 of the QAPP.
4.2 Reports to Management (C2)
Reporting requirements are provided in Section C2 of the QAPP.
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
Facilities | Environmental | Geotechnical | Materials 17
5.0 Data Validation And Usability (D)
5.1 Data Review, Verification, and Validation (D1)
The Terracon Project Manager will be responsible for data management on this project.
Details for data review, verification, and validation requirements are provided in Sections
D1, D2, and D3 in the QAPP.
5.2 Verification and Usability Methods (D2)
Data collected during this project will be collected in accordance with this SAP and the
QAPP. Details for data verification, validation, and usability methods are provided in
Sections D2 and D3 in the QAPP.
6.0 References
Terracon, 2024a. Community-Wide Quality Assurance Project Plan, Salt Lake County
Coalition Assessment Grant, EPA Cooperative Agreement No. 96897201. February 14,
2024.
Phase I Environmental Assessment, Salt Lake Redevelopment Agency Blight Study,
North Temple Street Corridor Blight Study Area N4
South Temple to 100 South and 800 West to 900 West, Salt Lake City, Utah
Dated: June 21, 2010
Prepared by: Wasatch Environmental, Inc.
For: Lewis Young Robertson & Burningham, Inc.
Phase I Environmental Assessment, Schovaers Electronics
22 South Jeremy Street, Salt Lake City, Salt Lake County, Utah
Dated: August 31, 2015
Prepared by: Terracon
For: Redevelopment Agency of Salt Lake City
Asbestos and Hazardous Materials Survey, North Temple Brownfields Assessment, EPA
Cooperative Agreement No. 96809601, Hazardous Substance Grant for Redevelopment
Agency of Salt Lake City, Schovaers Electronics Facility
22 South Jeremy Street, Salt Lake City, Utah
Dated: January 18, 2016
Prepared by: Terracon
For: Redevelopment Agency of Salt Lake City
Sampling and Analysis Plan
Schovaers Electronics | Salt Lake City, Utah
April 4, 2025 | Terracon Project No. 61237386 Task 3.16
Facilities | Environmental | Geotechnical | Materials 18
Phase II Environmental Assessment, North Temple Brownfields Assessment, EPA
Cooperative Agreement No. 96809601, Hazardous Substance Grant for Redevelopment
Agency of Salt Lake City, Schovaers Electronics Facility
22 South Jeremy Street, Salt Lake City, Utah
Dated: February 8, 2016
Prepared by: Terracon
For: Redevelopment Agency of Salt Lake City
Phase I Environmental Assessment, Schovaers Electronics
22 South Jeremy Street, Salt Lake City, Salt Lake County, Utah
Dated: February 14, 2018
Prepared by: Terracon
For: Salt Lake County
Phase II Environmental Assessment (Final), Salt Lake County Brownfields Assessment,
EPA Cooperative Agreement No. 96835701, Hazardous Materials and Petroleum Grant
for Salt Lake County, Schovaers Electronics
22 South Jeremy Street, Salt Lake City, Salt Lake County, Utah
Dated: January 9, 2019
Prepared by: Terracon
For: Salt Lake County
Phase I Environmental Assessment
22 South Jeremy Street, Salt Lake City, Salt Lake County, Utah
Dated: July 8, 2022
Prepared by: Terracon
For: Redevelopment Agency of Salt Lake City

APPENDIX A: EXHIBITS

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Exhibit
terracon.comPH. 801-545-8500
6952 S High Tech Dr, Ste B
Midvale, UT
Reviewed By:
Drawn By:
Dec 2024
Date:
61247165
Project No.:
Schovaers Electronics
22 South Jeremy Street
Salt Lake City, Utah
Topographic Site Overview
1
ABA
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DATA SOURCES:
ESRI - Basemaps
0 4,000 8,0002,000
Feet
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Approximate Site Boundary
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Exhibit
terracon.comPH. 801-545-8500
6952 S High Tech Dr, Ste B
Midvale, UT
Reviewed By:
Drawn By:
Dec 2024
Date:
61247165
Project No.:
Schovaers Electronics
22 South Jeremy Street
Salt Lake City, Utah
Soil Exceedance Map
ABA
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DATA SOURCES:
ESRI - Basemaps
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SE-SB-08
SE-SB-09
SE-SB-10
SE-SB-11 SE-SB-12 SE-SB-13
SE-SB-14
SE-SB-15
SE-SB-16
SE-SB-17
SE-SB-18
SE-SB-19
SE-SB-20SE-SB-21
SE-SB-22
SE-SB-23
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Approximate Site Boundary
Soil Exceedances
Exceeds Backround Arsenic Concentration and Industrial RSL Ior Trichloroethene
Arsenic was reported aEove the Industrial RSL in most samples however, the concentrations were typical oI arsenic
concentrations generally encountered in Salt Lake County.
2
2015
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Exhibit
terracon.comPH. 801-545-8500
6952 S High Tech Dr, Ste B
Midvale, UT
Reviewed By:
Drawn By:
Dec 2024
Date:
61247165
Project No.:
Schovaers Electronics
22 South Jeremy Street
Salt Lake City, Utah
Soil Vapor Exceedance Map
ABA
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DATA SOURCES:
ESRI - Basemaps
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Sub Slab Vapor Exceedances
Exceeds Commercial VISL for Naphthalene
Exceeds Commercial VISL for Trichloroethene
4

APPENDIX B: TABLES

(mg/kg)(mg/kg) (mg/L) (mg/kg)(mg/L)(mg/kg)(mg/L) (mg/L)(mg/kg) (ug/L)(µg/L) (µg/L)
67-64-1 Acetone 70,000 1,100,000 18 -- -- -- -- -- 0.01 11.3 22,500,000 94,500,000
107-13-1 Acrylonitrile 0.25 1.1 0.00005 -- -- -- -- -- 0.00179 0.671 7.32 32.0
71-43-2 Benzene 1.2 5.1 0.00046 0.2 0.005 0.9 0.3 0.005 0.00027 0.0941 1.59 6.93
108-86-1 Bromobenzene 290 1800 0.062 -- -- -- -- -- 0.000284 0.118 620 2,600
75-27-4 Bromodichloromethane 0.29 1.3 0.00013 -- -- -- -- 0.08 0.000254 0.136 0.876 3.82
75-25-2 Bromoform 19 86 0.0033 -- -- -- -- 0.08 0.000424 0.129 117 510
74-83-9 Bromomethane 6.8 30 0.0075 -- -- -- -- -- 0.00134 0.605 17.4 73
104-51-8 n-Butylbenzene 3,900 58,000 1 -- -- -- -- -- 0.000258 0.157 -- --
135-98-8 sec-Butylbenzene 7,800 120,000 2 -- -- -- -- -- 0.000201 0.125 -- --
98-06-6 tert-Butylbenzene 7,800 120,000 0.69 -- -- -- -- -- 0.000206 0.127 -- --
56-23-5 Carbon tetrachloride 0.65 2.9 0.00046 -- -- -- -- 0.005 0.000328 0.128 0.415 1.81
108-90-7 Chlorobenzene 280 1,300 0.078 -- -- -- -- 0.1 0.000212 0.116 410 1,720
124-48-1 Chlorodibromomethane 8.3 39 0.00087 -- -- -- -- 0.08 0.000373 0.14 -- --
75-00-3 Chloroethane 14,000 57,000 21 -- -- -- -- -- 0.000946 0.192 23,000 96,500
67-66-3 Chloroform 0.32 1.4 0.00022 -- -- -- -- 0.08 0.000229 0.111 0.814 3.55
74-87-3 Chloromethane 110 460 0.19 -- -- -- -- -- 0.000375 0.96 260 1,090
95-49-8 2-Chlorotoluene 1,600 23,000 0.24 -- -- -- -- -- 0.000301 0.106 -- --
106-43-4 4-Chlorotoluene 1,600 23,000 0.25 -- -- -- -- -- 0.00024 0.114 -- --
96-12-8 1,2-Dibromo-3-Chloropropane 0.0053 0.064 3.3E-07 -- -- -- -- 0.0002 0.00105 0.000276 0.176 0.769
106-93-4 1,2-Dibromoethane 0.036 0.16 0.0000075 -- -- -- -- 0.00005 0.000343 0.000126 124 521
74-95-3 Dibromomethane 24 99 0.0083 -- -- -- -- -- 0.000382 0.000122 2,660 11,200
95-50-1 1,2-Dichlorobenzene 1,800 9,300 0.3 -- -- -- -- 0.6 0.000305 0.000107 2.59 11.3
106-46-7 1,4-Dichlorobenzene 2.6 11 0.00048 -- -- -- -- 0.075 0.000226 0.12 2.59 11.3
75-71-8 Dichlorodifluoromethane 87 370 0.2 -- -- -- -- -- 0.000713 0.374 7.44 31.2
75-34-3 1,1-Dichloroethane 3.6 16 0.0028 -- -- -- -- -- 0.000199 0.1 7.64 33.4
107-06-2 1,2-Dichloroethane 0.46 2 0.00017 -- -- -- -- 0.005 0.000265 0.0819 2.24 9.78
75-35-4 1,1-Dichloroethene 230 1,000 0.28 -- -- -- -- 0.007 0.000303 0.188 195 821
156-59-2 cis-1,2-Dichloroethene 63 370 0.036 -- -- -- -- 0.07 0.000235 0.126 -- --
156-60-5 trans-1,2-Dichloroethene 70 300 0.36 -- -- -- -- 0.1 0.000264 0.149 0.109 0.457
78-87-5 1,2-Dichloropropane 2.5 11 0.00085 -- -- -- -- 0.005 0.000358 0.149 -- --
142-28-9 1,3-Dichloropropane 1,600 23,000 0.37 -- -- -- -- -- 0.000279 0.11 -- --
108-20-3 Di-isopropyl ether 2,200 9,400 1.5 -- -- -- -- -- 0.000248 0.105 6,970 29,300
100-41-4 Ethylbenzene 5.8 25 0.0015 5 0.7 23 4 0.7 0.000297 0.137 3.49 15.2
87-68-3 Hexachloro-1,3-butadiene 1.2 5.3 0.00014 -- -- -- -- -- 0.000342 0.337 0.303 1.32
98-82-8 Isopropylbenzene (Cumene)1,900 9,900 0.45 -- -- -- -- -- 0.000243 0.105 887 3,730
78-93-3 2-Butanone (MEK)27,000 190,000 5.6 -- -- -- -- -- 0.00468 0.119 2,240,000 9,410,000
75-09-2 Methylene Chloride 57 1,000 0.011 -- -- -- -- 0.005 0.001 0.43 763 9,230
108-10-1 4-Methyl-2-pentanone (MIBK)33,000 140,000 6.3 -- -- -- -- -- 0.00188 0.478 555,000 2,330,000
1634-04-4 Methyl tert-butyl ether 47 210 0.014 0.3 0.2 0.3 0.2 -- 0.000212 0.101 450 1,970
91-20-3 Naphthalene 2 8.6 0.00012 51 0.7 51 0.7 -- 0.001 1.0 4.59 20.1
103-65-1 n-Propylbenzene 3,800 24,000 0.66 -- -- -- -- -- 0.000206 0.0993 2,430 10,200
100-42-5 Styrene 6,000 35,000 1.2 -- -- -- -- 0.1 0.000234 0.118 9,280 39,000
630-20-6 1,1,1,2-Tetrachloroethane 2 8.8 0.00057 -- -- -- -- -- 0.000264 0.147 3.71 16.2
79-34-5 1,1,2,2-Tetrachloroethane 0.6 2.7 0.000076 -- -- -- -- -- 0.000365 0.133 3.23 14.1
76-13-1 1,1,2-Trichlorotrifluoroethane 6,700 28,000 10 -- -- -- -- -- 0.000365 0.18 242 1020
127-18-4 Tetrachloroethene 24 100 0.011 -- -- -- -- 0.005 0.000276 0.3 14.9 65
108-88-3 Toluene 4,900 47,000 1.1 9 1 25 3 1 0.000434 0.278 19,200 80,700
87-61-6 1,2,3-Trichlorobenzene 63 930 0.007 -- -- -- -- -- 0.000306 0.23 -- --
120-82-1 1,2,4-Trichlorobenzene 24 110 0.0012 -- -- -- -- 0.07 0.000388 0.481 35.9 151
71-55-6 1,1,1-Trichloroethane 8,100 36,000 8 -- -- -- -- 0.2 0.000286 0.149 7,420 31,100
79-00-5 1,1,2-Trichloroethane 1.1 5 0.00028 -- -- -- -- 0.005 0.000277 0.158 5.21 22.8
79-01-6 Trichloroethene 0.94 6 0.00049 -- -- -- -- 0.005 0.000279 0.19 1.19 7.43
75-69-4 Trichlorofluoromethane 23,000 350,000 5.2 -- -- -- -- -- 0.000382 0.16 -- --
96-18-4 1,2,3-Trichloropropane 0.0051 0.11 7.5E-07 -- -- -- -- -- 0.000741 0.237 22.3 93.7
95-63-6 1,2,4-Trimethylbenzene 300 1,800 0.056 -- -- -- -- -- 0.000211 0.104 351 1,470
526-73-8 1,2,3-Trimethylbenzene 340 2,000 0.055 -- -- -- -- -- 0.000287 0.322 248 1,040
108-67-8 1,3,5-Trimethylbenzene 270 1,500 0.06 -- -- -- -- -- 0.000266 0.104 175 733
75-01-4 Vinyl chloride 0.059 1.7 0.000019 -- -- -- -- 0.002 0.000291 0.234 0.147 2.45
1330-20-7 Xylenes, Total 580 2,500 0.19 142 10 142 10 10 0.000698 0.174 385 1,620
NA TRPH -- -- -- 1,000 10 10,000 10 -- 33 853 -- --
NA TPH-GRO -- -- -- 150 1 1,500 10 -- 0.1 108 -- --
NA TPH-DRO -- -- -- 500 1 5,000 10 -- 0.769 24.7 -- --
CAS – Chemical Abstracts Service. NA - Not Applicable. MDL - Laboratory Method Detection Limit. -- Not Established.
EPA RSL – EPA Regional Screening Level.
DEQ-DERR - Utah Department of Environmental Quality-Division of Environmental Response.
EPA MCL - EPA Maximum Contaminant Level. EPA VISL – Vapor Intrusion Screening Level Target Ground Water Conc. @ TCR = 1E-06 and THQ = 1.
mg/kg – milligrams per kilogram. mg/L – milligrams per liter. µg/L - micrograms per liter.
EPA VISL Target
Groundwater
Concentration
Residential
EPA VISL Target
Groundwater
Concentration
Commercial
Utah DEQ-DERR Tier 1Utah DEQ-DERR ISL
Soil GW
TABLE 1A
SCREENING LEVELS FOR CONTAMINANTS OF CONCERN - VOCs
GW
MDL
(Soil)EPA MCL MDL
(Water)SoilCAS# Parameter
EPA RSL Soil
Resident
EPA RSL Soil
Industrial
EPA RSL
Tapwater
EPA
Residential
VISL
TSSNSGC
EPA
Commercial
VISL
TSSNSGC
µg/m3 µg/m3
71-55-6 1,1,1-Trichloroethane 174,000 730,000 2.2
79-34-5 1,1,2,2-Tetrachloroethane 1.61 7.05 2.8
630-20-6 1,1,1,2-Tetrachloroethane 12.6 55.2 2.8
79-00-5 1,1,2-Trichloroethane 5.85 25.6 2.2
76-13-1 1,1,2-Trichlorotrifluoroethane (F113) 174,000 730,000 3.1
75-34-3 1,1-Dichloroethane 58.5 256 1.6
75-35-4 1,1-Dichloroethene 138 578 1.6
120-82-1 1,2,4-Trichlorobenzene 69.5 292 7.5
95-63-6 1,2,4-Trimethylbenzene 2,090 8,760 2
106-93-4 1,2-Dibromoethane (EDB) 0.156 0.681 3.1
95-50-1 1,2-Dichlorobenzene 6,950 29,200 2.4
107-06-2 1,2-Dichloroethane (EDC) 3.6 15.7 1.6
78-87-5 1,2-Dichloropropane 25.3 110 1.9
108-67-8 1,3,5-Trimethylbenzene 2,090 8,760 2
541-73-1 1,3-Dichlorobenzene -- -- 2.4
106-46-7 1,4-Dichlorobenzene 8.51 37.2 2.4
78-93-3 2-Butanone (MEK) 174,000 730,000 2.4
591-78-6 2-Hexanone (MBK) 1,040 4,380 3.3
622-96-8 4-Ethyltoluene -- -- 2
108-10-1 4-Methyl-2-pentanone (MIBK) 104,000 438,000 3.3
71-43-2 Benzene 12 52.4 0.6
75-27-4 Bromodichloromethane 2.53 11 2.7
75-25-2 Bromoform 85.1 372 4.2
74-83-9 Bromomethane 174 730 1.6
75-15-0 Carbon disulfide 24,300 102,000 1.3
56-23-5 Carbon tetrachloride 15.6 68.1 1.3
108-90-7 Chlorobenzene 1,740 7,300 1.9
75-00-3 Chloroethane 139,000 584,000 1.1
67-66-3 Chloroform 4.07 17.8 1
74-87-3 Chloromethane 3,130 13,100 0.8
156-59-2 cis-1,2-Dichloroethene 1,390 5,840 1.6
10061-01-5 cis-1,3-Dichloropropene -- -- 1.8
124-48-1 Dibromochloromethane -- -- 3.5
75-71-8 Dichlorodifluoromethane (F12) 3,480 14,600 4
76-14-2 Dichlorotetrafluoroethane (F114) -- -- 2.8
100-41-4 Ethylbenzene 37.4 164 1.8
87-68-3 Hexachlorobutadiene 4.25 18.6 10.7
179601-23-1 m,p-Xylene 3,480 14,600 1.8
75-09-2 Methylene chloride (Dichloromethane) 3,380 40,900 1.4
95-47-6 o-Xylene 3,480 14,600 1.8
100-42-5 Styrene 34800 146,000 1.7
127-18-4 Tetrachloroethene 360 1,570 2.8
108-88-3 Toluene 174,000 730,000 3.1
156-60-5 trans-1,2-Dichloroethene 1,390 5,840 1.6
10061-02-6 trans-1,3-Dichloropropene -- -- 1.8
79-01-6 Trichloroethene 15.9 99.7 2.2
75-69-4 Trichlorofluoromethane (F11) -- -- 2.3
75-01-4 Vinyl chloride 5.59 92.9 0.5
EPA Vapor Intrusion Screening Level (VISL) Target Sub-Slab and Near-source Soil Gas Concentration (TSSNSGC), assuming
a target risk for carcinogens of 1.00E-06 and a target hazard quotient for non-carcinogens of 1.
MDL - Method Detection Limit (per H&P Mobile Geochemistry, Inc.).
VOCs - Volatile Organic Compounds.
TABLE 1B
VAPOR INTRUSION SCREENING LEVELS (VISLs) FOR VOCs IN SOIL GAS
CAS No. Parameter
MDL
(µg/m3)
CAS - Chemical Abstract Service, (µg/m3) - micrograms per cubic meter, -- Not Established.
EPA Residential
Target Indoor Air
Concentration
EPA Commercial
Target Indoor Air
Concentration
ug/m3 ug/m3
71-55-6 1,1,1-Trichloroethane 5,210 21,900 0.06
79-34-5 1,1,2,2-Tetrachloroethane 0.0484 0.211 0.07
630-20-6 1,1,1,2-Tetrachloroethane 0.379 1.66 0.07
79-00-5 1,1,2-Trichloroethane 0.175 0.767 0.06
76-13-1 1,1,2-Trichlorotrifluoroethane (F113) 5,210 21,900 0.08
75-34-3 1,1-Dichloroethane 1.75 7.67 0.04
75-35-4 1,1-Dichloroethene 4.13 17.3 0.04
120-82-1 1,2,4-Trichlorobenzene 2.09 8.76 0.08
95-63-6 1,2,4-Trimethylbenzene 62.6 263 0.05
106-93-4 1,2-Dibromoethane (EDB) 0.00468 0.0204 0.08
95-50-1 1,2-Dichlorobenzene 209 876 0.06
107-06-2 1,2-Dichloroethane (EDC) 0.108 0.472 0.05
78-87-5 1,2-Dichloropropane 0.759 3.31 0.05
108-67-8 1,3,5-Trimethylbenzene 62.6 263 0.05
541-73-1 1,3-Dichlorobenzene -- -- 0.06
106-46-7 1,4-Dichlorobenzene 0.255 1.11 0.06
78-93-3 2-Butanone (MEK) 521 21,900 0.12
591-78-6 2-Hexanone (MBK) 31.3 131 0.17
622-96-8 4-Ethyltoluene -- -- 0.05
108-10-1 4-Methyl-2-pentanone (MIBK) 3,130 13,100 0.08
71-43-2 Benzene 0.36 1.57 0.03
75-27-4 Bromodichloromethane 0.0759 0.331 0.07
75-25-2 Bromoform 2.55 11.1 0.1
74-83-9 Bromomethane 5.21 21.9 0.12
75-15-0 Carbon disulfide 730 3,070 0.03
56-23-5 Carbon tetrachloride 0.468 2.04 0.06
108-90-7 Chlorobenzene 52.1 219 0.1
75-00-3 Chloroethane 4,170 17,500 0.13
67-66-3 Chloroform 0.122 0.533 0.05
74-87-3 Chloromethane 93.9 394 0.04
156-59-2 cis-1,2-Dichloroethene 41.7 175 0.04
10061-01-5 cis-1,3-Dichloropropene -- -- 0.05
124-48-1 Dibromochloromethane -- -- 0.09
75-71-8 Dichlorodifluoromethane (F12) 104 438 0.1
76-14-2 Dichlorotetrafluoroethane (F114) -- -- 0.07
100-41-4 Ethylbenzene 1.12 4.91 0.04
87-68-3 Hexachlorobutadiene 0.128 0.557 0.21
179601-23-1 m,p-Xylene 104 438 0.06
75-09-2 Methylene chloride (Dichloromethane) 101 1,230 0.05
95-47-6 o-Xylene 104 438 0.04
100-42-5 Styrene 1,040 4,380 0.04
127-18-4 Tetrachloroethene 10.8 47.2 0.07
108-88-3 Toluene 5,210 21,900 0.08
156-60-5 trans-1,2-Dichloroethene 41.7 175 0.04
10061-02-6 trans-1,3-Dichloropropene -- -- 0.05
79-01-6 Trichloroethene 0.478 2.99 0.08
75-69-4 Trichlorofluoromethane (F11) -- -- 0.06
75-01-4 Vinyl chloride 0.168 2.79 0.03
EPA Vapor Intrusion Screening Level (VISL) Target Indoor Air Concentration, assuming a target risk for carcinogens of 1.00E-06 and a
target hazard quotient for non-carcinogens of 1.
MDL - Method Detection Limit (per H&P Mobile Geochemistry, Inc.)
VOCs - Volatile Organic Compounds
TABLE 1C
VAPOR INTRUSION SCREENING LEVELS (VISLs) FOR VOCs IN INDOOR AIR
CAS No. Parameter
MDL
(ug/m3)
CAS - Chemical Abstract Service, (µg/m3) - micrograms per cubic meter, -- Not Established.
Method
Detection
Limits
Bulk
(%) (%) (%) (%)
Asbestos Various* >1.0 >1.0 <1.0** <1.0
EPA = Environmental Protection Agency
AHERA = Asbestos Hazard Emergency Response Act
NESHAP = National Emissions Standards for Hazardous Air Pollutants
OSHA = Occupational Safety and Health Administration
% = percent
TABLE 1D
SCREENING LEVELS FOR CONTAMINANTS OF CONCERN - ACM
Analyte CAS No.
EPA AHERA EPA NESHAP OSHA
* Various CAS Numbers based on mineral type (12001-28-4, 12001-29-5, 12172-73-5, 1332-21-4, 14567-73-8)
** Trace levels of asbestos (<1.0%) will be managed in accordance with OSHA Regulation 1926.1101
VOCs Groundwater 8260B 40 ml vial glass, HCl, 4°C 14 days 0.01 to 0.000212 mg/l
Asbestos Bulk Building Material
EPA Methods: 600/M4-82-020
and 600/R-93/116 NA NA <1%
VOCs Soil Vapor TO-15 1L Summa, none 30 days 0.5 to 10.7 ug/m3
VOCs Indoor Air TO-15 6L Summa, none 30 days 0.03 to 0.17 ug/m3
NA - Not Applicable
ug/m3 = micrograms per cubic meter
MDL - Method Detection Limit
VOCs - Volatile Organic Compounds
TABLE 2
ANALYTICAL METHOD SUMMARY
Matrix
(Solid/Liquid/Gas)Parameter Analytical Method
Sample container/
preservative Holding Time Laboratory Method
Detection Limit (MDL)
mg/kg - milligrams per kilogram, mg/l - milligrams per liter
Sample Location Rationale Sample Interval Sample Matrix Analytes
MW-1 through MW-5 Characterization of
groundwater impacts
First occurrence of
groundwater
(approximately
10 to 12 feet bgs)
Groundwater VOCs
VP-1 through VP-4 (Vapor Pin) and
IA-1 through IA-4 (Indoor Air )
Assess VOC concentrations in
sub-slab vapor and indoor air
prior to VIMS design
Indoor ambient and
below the floor slab
Sub-slab Vapor and
Indoor Air VOCs
bgs - below ground surface
MW - Monitoring Well
VP - Vapor Point
IA - Indoor Air
VOCs - Volatile Organic Compounds by EPA Method 8260 for groundwater and by EPA Method TO-15 for soil vapor samples.
TABLE 3
SUMMARY OF SAMPLE LOCATIONS
PFAS - Perfluoroalkyl and Polyfluoroalkyl Substances

APPENDIX C: PREVIOUS SAMPLING EVENT
RESULTS

Table 4A - Metals and pH in Soil
Schovaers Electronics - 22 South Jeremy Street, Salt Lake City, Utah
Terracon Project No. 61247165
Method Analyte CAS # Units
Residential RSL1 Industrial RSL2 Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q
6010B ANTIMONY 7440-36-0 mg/kg 31 470 <0.75 <0.75 <0.75 1.82 J <0.75 <0.75 <0.75 1.93 J <0.75 1.27 J 0.897 J
6010B ARSENIC 7440-38-2 mg/kg 0.68 3 4.62 8.77 8.47 8.33 17.5 10 16.5 15.2 12.4 15.1 11.8
6010B BERYLLIUM 7440-41-7 mg/kg 160 2300 1.11 0.761 0.851 0.641 0.742 0.228 J 0.887 1.46 0.525 0.561 0.427
6010B CADMIUM 7440-43-9 mg/kg 7.1 100 0.285 J 0.736 0.251 J 0.87 0.181 J 0.403 J 0.0943 J 0.408 J 0.481 J 1.52 1.05
6010B CHROMIUM 7440-47-3 mg/kg 120000 1800000 13.4 13 8.71 13.8 13.7 5.96 14.8 6.66 11.6 16.4 8.48
3060A/7
196A
CHROMIUM,
HEXAVALENT 18540-29-9 mg/kg 0.95 20 1.71 J 3.25 11.3 18.4 J6 1.13 J <0.64 4.14 <0.64 0.993 J <0.64 <0.64
6010B COPPER 7440-50-8 mg/kg 3100 47000 56.6 48.4 39.6 44.5 37.3 19.6 58.6 49.8 22.2 48.7 42.3
6010B LEAD 7439-92-1 mg/kg 200 800 36.7 127 45.2 129 41.7 14.5 31.7 194 56 252 290
7471A MERCURY 7439-97-6 mg/kg 7.1 30 0.025 J 0.18 0.025 0.171 0.0186 J 0.0213 J 0.116 0.414 0.142 0.971 1.84
6010B NICKEL 7440-02-0 mg/kg 1400 17000 16.2 14.5 14 13.2 16.1 5.45 23.5 5.63 10.2 17.4 7.36
6010B SELENIUM 7782-49-2 mg/kg 390 5800 <0.74 <0.74 <0.74 <0.74 1.27 J <0.74 1.4 J <0.74 <0.74 <0.74 <0.74
6010B SILVER 7440-22-4 mg/kg 390 5800 <0.28 <0.28 <0.28 4.11 <0.28 <0.28 <0.28 <0.28 <0.28 <0.28 <0.28
6010B THALLIUM 7440-28-0 mg/kg 0.78 12 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65
6010B ZINC 7440-66-6 mg/kg 23000 350000 86.3 97.6 61.6 138 80.4 27.1 91.6 92.7 71 209 182
9045D pH NE su NE NE 8.41 7.83 7.52 8.20 8.06 8.28 8.17 8.6 8.5 8.22 8.47
1 - Environmental Protection Agency Regional Screening Levels for Residential soil (November 2024; Target Hazard Quotient=1, Target Risk=10 -6).
2 - Environmental Protection Agency Regional Screening Levels for Industrial soils (November 2024; Target Hazard Quotient=1, Target Risk=10 -6).
Bold values were reported above laboratory reporting limit. Italicized values indicate reporting limits above the Screening Levels.
CAS: Chemical Abstracts Service, mg/kg: milligrams per kilogram, NA: not analyzed, NE: not established, su: standard unit.
< : Not reported at or above the indicated analytical reporting limit
Q: Qualifiers -
J: The identification of the analyte is acceptable; the reported value is an estimate.
J3: The associated batch QC was outside the established quality control range for precision.
J6: The sample matrix interfered with the ability to make any accurate determination; spike value is low.
O1: The analyte failed the method required serial dilution test and/or subsequent post-spike criteria. These failures indicate matrix interference.
T8: Sample(s) received past/too close to holding time expiration.
11/11/2015
SE-SB-07
1-2 FT
11/12/2015
SE-SB-10
0.5-1 FT
L800774-02
11/12/2015
L800774-17
11/11/201511/11/2015
SE-SB-06
5-5.5 FT
11/11/201511/11/2015
SE-SB-11
1-1.5 FT
L800774-14 L800774-26
SE-SB-09
1-2 FT
11/12/2015
L800774-11
Client Sample ID
Date Collected
SE-SB-01
1- 2 FT
SE-SB-02
1-2 FT
11/11/2015
SE-SB-05
5-6.5 FT
11/11/2015
SE-SB-08
0.5-1.5 FT
11/12/2015
SE-SB-03
1.5-2 FT
SE-SB-04
1-2 FT
Lab Sample ID L800774-32L800774-05 L800774-23L800774-08 L800774-20 L800774-29
Page 1 of 3
Table 4A - Metals and pH in Soil
Schovaers Electronics - 22 South Jeremy Street, Salt Lake City, Utah
Terracon Project No. 61247165
Method Analyte CAS # Units
Residential RSL1 Industrial RSL2
6010B ANTIMONY 7440-36-0 mg/kg 31 470
6010B ARSENIC 7440-38-2 mg/kg 0.68 3
6010B BERYLLIUM 7440-41-7 mg/kg 160 2300
6010B CADMIUM 7440-43-9 mg/kg 7.1 100
6010B CHROMIUM 7440-47-3 mg/kg 120000 1800000
3060A/7
196A
CHROMIUM,
HEXAVALENT 18540-29-9 mg/kg 0.95 20
6010B COPPER 7440-50-8 mg/kg 3100 47000
6010B LEAD 7439-92-1 mg/kg 200 800
7471A MERCURY 7439-97-6 mg/kg 7.1 30
6010B NICKEL 7440-02-0 mg/kg 1400 17000
6010B SELENIUM 7782-49-2 mg/kg 390 5800
6010B SILVER 7440-22-4 mg/kg 390 5800
6010B THALLIUM 7440-28-0 mg/kg 0.78 12
6010B ZINC 7440-66-6 mg/kg 23000 350000
9045D pH NE su NE NE
Client Sample ID
Date Collected
Lab Sample ID
Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q
<0.75 <0.75 <0.75 <0.75 NA NA NA NA <0.810 <0.875 <0.853 <1.00
10.1 7.1 5.87 5.05 NA NA NA NA 6.25 1.6 J 17.5 5.62
0.493 1.09 0.616 0.86 NA NA NA NA 0.335 0.135 J 0.544 1.04
0.761 0.657 0.426 J 0.435 J NA NA NA NA 0.303 J 0.294 J 2.16 0.597 J
10.5 22.2 11.1 13.2 NA NA NA NA 11.6 6.72 17.7 23.4
1.75 J 7.18 2.65 1.76 J <0.702 1.16 J 0.844 J <0.779 <0.692 <0.747 1.5 J 0.855 J
53.3 43.6 41 55.2 NA NA NA NA 10.3 10.8 49 55.5
140 44 45.2 41.1 NA NA NA NA 12.4 7.31 299 29.7
0.386 0.057 0.044 0.0144 J NA NA NA NA 0.0189 J 0.00652 J 0.26 0.0163 J
10.6 26.9 15.2 16.1 NA NA NA NA 8.82 5.03 10.1 21.9
<0.74 <0.74 <0.74 <0.74 NA NA NA NA 1.07 J 0.944 J <0.842 <0.988
<0.28 <0.28 <0.28 <0.28 NA NA NA NA <0.303 <0.327 <0.319 <0.374
<0.65 <0.65 <0.65 <0.65 NA NA NA NA <0.702 <0.758 <0.739 <0.868
118 109 64 72.7 NA NA NA NA 33.9 18.5 210 92
8.89 8.13 8.83 8.31 NA NA NA NA 8.48 T8 8.31 T8 8.01 T8 8.19 T8
1 - Environmental Protection Agency Regional Screening Levels for Residential soil (November 2024; Target Hazard Quotient=1, Target Risk=10 -6).
2 - Environmental Protection Agency Regional Screening Levels for Industrial soils (November 2024; Target Hazard Quotient=1, Target Risk=10 -6).
Bold values were reported above laboratory reporting limit. Italicized values indicate reporting limits above the Screening Levels.
CAS: Chemical Abstracts Service, mg/kg: milligrams per kilogram, NA: not analyzed, NE: not established, su: standard unit.
< : Not reported at or above the indicated analytical reporting limit
Q: Qualifiers -
J: The identification of the analyte is acceptable; the reported value is an estimate.
J3: The associated batch QC was outside the established quality control range for precision.
J6: The sample matrix interfered with the ability to make any accurate determination; spike value is low.
O1: The analyte failed the method required serial dilution test and/or subsequent post-spike criteria. These failures indicate matrix interference.
T8: Sample(s) received past/too close to holding time expiration.
L800774-35
11/11/201511/12/2015 11/11/2015
SE-SB-19
(8)
05/17/2018 05/17/2018
SE-SB-16
(2.5)
SE-SB-16
(5)
SE-SB-17
(2.5)
SE-SB-17
(5)
SE-SB-18
(3)
11/11/2015 05/17/2018 05/17/201805/17/2018 05/17/2018 05/17/2018 05/17/2018
SE-SB-12
1-1.5 FT
SE-SB-14
1-2 FT
SE-SB-18
(8)
SE-SB-13
1-2 FT
SE-SB-15
1-2 FT
L995461-21 L995461-22 L995461-23 L995461-24L800774-41 L800774-44
SE-SB-19
(4)
L995461-15L995461-18 L995461-19 L995461-16L800774-38
Page 2 of 3
Table 4A - Metals and pH in Soil
Schovaers Electronics - 22 South Jeremy Street, Salt Lake City, Utah
Terracon Project No. 61247165
Method Analyte CAS # Units
Residential RSL1 Industrial RSL2
6010B ANTIMONY 7440-36-0 mg/kg 31 470
6010B ARSENIC 7440-38-2 mg/kg 0.68 3
6010B BERYLLIUM 7440-41-7 mg/kg 160 2300
6010B CADMIUM 7440-43-9 mg/kg 7.1 100
6010B CHROMIUM 7440-47-3 mg/kg 120000 1800000
3060A/7
196A
CHROMIUM,
HEXAVALENT 18540-29-9 mg/kg 0.95 20
6010B COPPER 7440-50-8 mg/kg 3100 47000
6010B LEAD 7439-92-1 mg/kg 200 800
7471A MERCURY 7439-97-6 mg/kg 7.1 30
6010B NICKEL 7440-02-0 mg/kg 1400 17000
6010B SELENIUM 7782-49-2 mg/kg 390 5800
6010B SILVER 7440-22-4 mg/kg 390 5800
6010B THALLIUM 7440-28-0 mg/kg 0.78 12
6010B ZINC 7440-66-6 mg/kg 23000 350000
9045D pH NE su NE NE
Client Sample ID
Date Collected
Lab Sample ID
Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q
<0.886 <0.910 <0.839 J6 <0.981 <0.977 <0.834 <0.814 <0.956 <0.811 <0.875
11.9 9.83 5.74 52.9 8.78 6.05 3.63 21.4 3.46 20.8
0.457 0.524 0.622 0.78 1.38 0.612 0.351 1.24 0.353 0.666
0.278 J 0.44 J 1.27 2.53 0.331 J 0.819 0.378 J 1.05 0.43 J 1.11
14.2 15.4 15 19.3 31.1 16.3 20.3 28.2 14 15.1
<0.756 <0.776 <0.716 <0.837 <0.834 <0.712 <0.694 0.918 J <0.692 <0.747
J3 J6
O1
13.9 34.6 13.7 101 66.5 25.6 9.94 64.3 11.5 112
11.6 19.2 51.8 508 51.5 143 30.6 62.8 36.5 295
0.0155 J 0.0122 J 0.0836 1.42 0.0769 0.674 0.0509 0.026 0.0278 0.991
11.2 12.9 17.1 10.6 25.4 11 8.44 39.4 9.15 9.93
<0.874 2.53 1.75 J 1.16 J <0.964 <0.823 <0.803 1.87 J <0.800 1.06 J
<0.331 <0.340 <0.313 0.439 J <0.365 <0.311 <0.304 <0.357 <0.303 0.778 J
<0.768 <0.788 <0.727 <0.850 <0.847 <0.723 <0.705 <0.828 <0.703 <0.759
31.4 49.1 94 J6 280 126 99.5 41.1 111 52.4 135
8.71 T8 8.37 T8 8.43 T8 7.64 T8 8.69 T8 10.7 T8 8.63 T8 8.18 T8 7.98 T8 7.61 T8
1 - Environmental Protection Agency Regional Screening Levels for Residential soil (November 2024; Target Hazard Quotient=1, Target Risk=10 -6).
2 - Environmental Protection Agency Regional Screening Levels for Industrial soils (November 2024; Target Hazard Quotient=1, Target Risk=10 -6).
Bold values were reported above laboratory reporting limit. Italicized values indicate reporting limits above the Screening Levels.
CAS: Chemical Abstracts Service, mg/kg: milligrams per kilogram, NA: not analyzed, NE: not established, su: standard unit.
< : Not reported at or above the indicated analytical reporting limit
Q: Qualifiers -
J: The identification of the analyte is acceptable; the reported value is an estimate.
J3: The associated batch QC was outside the established quality control range for precision.
J6: The sample matrix interfered with the ability to make any accurate determination; spike value is low.
O1: The analyte failed the method required serial dilution test and/or subsequent post-spike criteria. These failures indicate matrix interference.
T8: Sample(s) received past/too close to holding time expiration.
L995461-08
SE-SB-24
(3)
SE-SB-24
(7)
SE-SB-20
(3)
SE-SB-20
(11)
SE-SB-21
(3) SE-SB-21 (7)
SE-SB-22
(3)
05/17/2018 05/17/201805/17/2018 05/17/2018 05/17/2018 05/17/2018 05/17/2018 05/17/2018
SE-SB-23
(10)
05/17/2018 05/17/2018
SE-SB-22
(7)
SE-SB-23
(3)
L995461-07L995461-01 L995461-02 L995461-04 L995461-05 L995461-09 L995461-10L995461-12 L995461-13
Page 3 of 3
Table 4B - Volatile Organic Compounds in Soil
Schovaers Electronics - 22 South Jeremy Street, Salt Lake City, Utah Lake City, Utah
Terracon Project No. 61241765
Analyte (Method 8260B)CAS # Units
Residential RSL1 Industrial RSL2 UDEQ ISL3 Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q Result
(mg/kg)Q
ACETONE 67-64-1 mg/kg 70000 1100000 NE <0.05 <0.05 <0.05 <0.05 J3, J5 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05
ACRYLONITRILE 107-13-1 mg/kg 0.25 1.1 NE <0.00895 <0.00895 <0.00895 <0.00895 J3 <0.00895 <0.00895 <0.00895 <0.00895 <0.00895 <0.00895 <0.00895 <0.00895 <0.00895 <0.00895 <0.00895
BENZENE 71-43-2 mg/kg 1.2 5.1 0.2 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135 <0.00135
BROMOBENZENE 108-86-1 mg/kg 290 1800 NE <0.00142 <0.00142 <0.00142 <0.00142 <0.00142 <0.00142 <0.00142 <0.00142 <0.00142 <0.00142 <0.00142 <0.00142 <0.00142 <0.00142 <0.00142
BROMODICHLOROMETHANE 75-27-4 mg/kg 0.29 1.3 NE <0.00127 <0.00127 <0.00127 <0.00127 <0.00127 <0.00127 <0.00127 <0.00127 <0.00127 <0.00127 <0.00127 <0.00127 <0.00127 <0.00127 <0.00127
BROMOFORM 75-25-2 mg/kg 19 86 NE <0.00212 <0.00212 <0.00212 <0.00212 <0.00212 <0.00212 <0.00212 <0.00212 <0.00212 <0.00212 <0.00212 <0.00212 <0.00212 <0.00212 <0.00212
BROMOMETHANE 74-83-9 mg/kg 6.8 30 NE <0.0067 <0.0067 <0.0067 <0.0067 <0.0067 <0.0067 <0.0067 <0.0067 <0.0067 <0.0067 <0.0067 <0.0067 <0.0067 <0.0067 <0.0067
N-BUTYLBENZENE 104-51-8 mg/kg 3900 58000 NE <0.00129 <0.00129 <0.00129 <0.00129 <0.00129 <0.00129 <0.00129 <0.00129 <0.00129 <0.00129 <0.00129 <0.00129 <0.00129 <0.00129 <0.00129
SEC-BUTYLBENZENE 135-98-8 mg/kg 7800 120000 NE <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
TERT-BUTYLBENZENE 98-06-6 mg/kg 7800 120000 NE <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103
CARBON TETRACHLORIDE 56-23-5 mg/kg 0.65 2.9 NE <0.00164 <0.00164 <0.00164 <0.00164 <0.00164 <0.00164 <0.00164 <0.00164 <0.00164 <0.00164 <0.00164 <0.00164 <0.00164 <0.00164 <0.00164
CHLOROBENZENE 108-90-7 mg/kg 280 1300 NE <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106
CHLORODIBROMOMETHANE 124-48-1 mg/kg 8.3 39 NE <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186
CHLOROETHANE 75-00-3 mg/kg 5400 23000 NE <0.00473 <0.00473 <0.00473 <0.00473 <0.00473 <0.00473 <0.00473 <0.00473 <0.00473 <0.00473 <0.00473 <0.00473 <0.00473 <0.00473 <0.00473
2-CHLOROETHYL VINYL ETHER 110-78-8 mg/kg NE NE NE <0.0117 J4 <0.0117 <0.0117 <0.0117 <0.0117 <0.0117 <0.0117 <0.0117 J4 <0.0117 J4 <0.0117 <0.0117 <0.0117 <0.0117 <0.0117 <0.0117
CHLOROFORM 67-66-3 mg/kg 0.32 1.4 NE <0.00114 <0.00114 <0.00114 <0.00114 <0.00114 <0.00114 <0.00114 <0.00114 <0.00114 <0.00114 <0.00114 <0.00114 <0.00114 <0.00114 <0.00114
CHLOROMETHANE 74-87-3 mg/kg 110 460 NE <0.00188 <0.00188 <0.00188 <0.00188 <0.00188 <0.00188 <0.00188 <0.00188 <0.00188 <0.00188 <0.00188 <0.00188 <0.00188 <0.00188 <0.00188
2-CHLOROTOLUENE 95-49-8 mg/kg 1600 23000 NE <0.0015 <0.0015 <0.0015 <0.0015 <0.0015 <0.0015 <0.0015 <0.0015 <0.0015 <0.0015 <0.0015 <0.0015 <0.0015 <0.0015 <0.0015
4-CHLOROTOLUENE 106-43-4 mg/kg 1600 23000 NE <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012
1,2-DIBROMO-3-CHLOROPROPANE 96-12-8 mg/kg 0.0053 0.064 NE <0.00525 <0.00525 <0.00525 <0.00525 J3 <0.00525 <0.00525 <0.00525 <0.00525 <0.00525 <0.00525 <0.00525 <0.00525 <0.00525 <0.00525 <0.00525
1,2-DIBROMOETHANE 106-93-4 mg/kg 0.036 0.16 NE <0.00172 <0.00172 <0.00172 <0.00172 <0.00172 <0.00172 <0.00172 <0.00172 <0.00172 <0.00172 <0.00172 <0.00172 <0.00172 <0.00172 <0.00172
DIBROMOMETHANE 74-95-3 mg/kg 24 99 NE <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191
1,2-DICHLOROBENZENE 95-50-1 mg/kg 1800 9300 NE <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152
1,3-DICHLOROBENZENE 541-73-1 mg/kg NE NE NE <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012
1,4-DICHLOROBENZENE 106-46-7 mg/kg 2.6 11 NE <0.00113 <0.00113 <0.00113 <0.00113 <0.00113 <0.00113 <0.00113 <0.00113 <0.00113 <0.00113 <0.00113 <0.00113 <0.00113 <0.00113 <0.00113
DICHLORODIFLUOROMETHANE 75-71-8 mg/kg 87 370 NE <0.00356 <0.00356 <0.00356 <0.00356 <0.00356 <0.00356 <0.00356 <0.00356 <0.00356 <0.00356 <0.00356 <0.00356 <0.00356 <0.00356 <0.00356
1,1-DICHLOROETHANE 75-34-3 mg/kg 3.6 16 NE <0.000995 <0.000995 <0.000995 <0.000995 <0.000995 <0.000995 <0.000995 <0.000995 <0.000995 <0.000995 <0.000995 <0.000995 <0.000995 <0.000995 <0.000995
1,2-DICHLOROETHANE 107-06-2 mg/kg 0.46 2 NE <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132
1,1-DICHLOROETHENE 75-35-4 mg/kg 4.8 20 NE <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152 <0.00152
CIS-1,2-DICHLOROETHENE 156-59-2 mg/kg 63 370 NE <0.00118 <0.00118 <0.00118 <0.00118 <0.00118 <0.00118 <0.00118 <0.00118 <0.00118 <0.00118 <0.00118 <0.00118 <0.00118 <0.00118 <0.00118
TRANS-1,2-DICHLOROETHENE 156-60-5 mg/kg 70 300 NE <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132
1,2-DICHLOROPROPANE 78-87-5 mg/kg 2.5 11 NE <0.00179 <0.00179 <0.00179 <0.00179 <0.00179 <0.00179 <0.00179 <0.00179 <0.00179 <0.00179 <0.00179 <0.00179 <0.00179 <0.00179 <0.00179
1,1-DICHLOROPROPENE 75-35-4 mg/kg 4.8 20 NE <0.00158 <0.00158 <0.00158 <0.00158 <0.00158 <0.00158 <0.00158 <0.00158 <0.00158 <0.00158 <0.00158 <0.00158 <0.00158 <0.00158 <0.00158
1,3-DICHLOROPROPANE 142-28-9 mg/kg 1600 23000 NE <0.00104 <0.00104 <0.00104 <0.00104 <0.00104 <0.00104 <0.00104 <0.00104 <0.00104 <0.00104 <0.00104 <0.00104 <0.00104 <0.00104 <0.00104
CIS-1,3-DICHLOROPROPENE 10061-01-5 mg/kg NE NE NE <0.00131 <0.00131 <0.00131 <0.00131 <0.00131 <0.00131 <0.00131 <0.00131 <0.00131 <0.00131 <0.00131 <0.00131 <0.00131 <0.00131 <0.00131
TRANS-1,3-DICHLOROPROPENE 10061-02-6 mg/kg NE NE NE <0.00134 <0.00134 <0.00134 <0.00134 <0.00134 <0.00134 <0.00134 <0.00134 <0.00134 <0.00134 <0.00134 <0.00134 <0.00134 <0.00134 <0.00134
2,2-DICHLOROPROPANE 594-20-7 mg/kg NE NE NE <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014
DI-ISOPROPYL ETHER 108-20-3 mg/kg 2200 9400 NE <0.00124 <0.00124 <0.00124 <0.00124 <0.00124 <0.00124 <0.00124 <0.00124 <0.00124 <0.00124 <0.00124 <0.00124 <0.00124 <0.00124 <0.00124
ETHYLBENZENE 100-41-4 mg/kg 5.8 25 5 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148 <0.00148
HEXACHLORO-1,3-BUTADIENE 87-68-3 mg/kg 1.2 5.3 NE <0.00171 <0.00171 <0.00171 <0.00171 <0.00171 <0.00171 <0.00171 <0.00171 <0.00171 <0.00171 <0.00171 <0.00171 <0.00171 <0.00171 <0.00171
ISOPROPYLBENZENE 98-82-8 mg/kg 1900 9900 NE <0.00122 <0.00122 <0.00122 <0.00122 <0.00122 <0.00122 <0.00122 <0.00122 <0.00122 <0.00122 <0.00122 <0.00122 <0.00122 <0.00122 <0.00122
P-ISOPROPYLTOLUENE 99-87-6 mg/kg 170 1100 NE <0.00102 <0.00102 <0.00102 <0.00102 <0.00102 <0.00102 <0.00102 <0.00102 <0.00102 <0.00102 <0.00102 <0.00102 <0.00102 <0.00102 <0.00102
1,4-DIOXANE 123-91-1 mg/kg 5.3 24 NE <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186 <0.00186
2-BUTANONE (MEK) 78-93-3 mg/kg 27000 190000 NE <0.0234 <0.0234 <0.0234 <0.0234 J3 <0.0234 <0.0234 <0.0234 <0.0234 <0.0234 <0.0234 <0.0234 <0.0234 <0.0234 <0.0234 <0.0234
METHYLENE CHLORIDE 75-09-2 mg/kg 57 1000 NE 0.0073 J <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.0063 J 0.00703 J <0.005 <0.005 <0.005 <0.005 <0.005 <0.005
4-METHYL-2-PENTANONE (MIBK) 108-10-1 mg/kg 33000 140000 NE <0.0094 <0.0094 <0.0094 <0.0094 J3 <0.0094 <0.0094 <0.0094 <0.0094 <0.0094 <0.0094 <0.0094 <0.0094 <0.0094 <0.0094 <0.0094
METHYL TERT-BUTYL ETHER 1634-04-4 mg/kg 47 210 0.3 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106
NAPHTHALENE 91-20-3 mg/kg 2 8.6 51 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005
N-PROPYLBENZENE 103-65-1 mg/kg 3800 24000 NE <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103 <0.00103
STYRENE 100-42-5 mg/kg 6000 35000 NE <0.00117 <0.00117 <0.00117 <0.00117 <0.00117 <0.00117 <0.00117 <0.00117 <0.00117 <0.00117 <0.00117 <0.00117 <0.00117 <0.00117 <0.00117
1,1,1,2-TETRACHLOROETHANE 630-20-6 mg/kg 2 8.8 NE <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132 <0.00132
1,1,2,2-TETRACHLOROETHANE 79-34-5 mg/kg 0.6 2.7 NE <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 mg/kg 6700 28000 NE <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182 <0.00182
TETRACHLOROETHENE 127-18-4 mg/kg 24 100 NE <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138
TOLUENE 108-88-3 mg/kg 4900 47000 9 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217 <0.00217
1,2,3-TRICHLOROBENZENE 87-61-6 mg/kg 63 930 NE <0.00153 <0.00153 <0.00153 <0.00153 <0.00153 <0.00153 <0.00153 <0.00153 <0.00153 <0.00153 <0.00153 <0.00153 <0.00153 <0.00153 <0.00153
1,2,4-TRICHLOROBENZENE 120-82-1 mg/kg 24 110 NE <0.00194 <0.00194 <0.00194 <0.00194 <0.00194 <0.00194 <0.00194 <0.00194 <0.00194 <0.00194 <0.00194 <0.00194 <0.00194 <0.00194 <0.00194
1,1,1-TRICHLOROETHANE 71-55-6 mg/kg 8100 36000 NE <0.00143 <0.00143 <0.00143 <0.00143 <0.00143 <0.00143 <0.00143 <0.00143 <0.00143 <0.00143 <0.00143 <0.00143 <0.00143 <0.00143 <0.00143
1,1,2-TRICHLOROETHANE 79-00-5 mg/kg 1.1 5 NE <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138 <0.00138
TRICHLOROETHENE 79-01-6 mg/kg 0.94 6 NE <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 0.00545 J <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014
TRICHLOROFLUOROMETHANE 75-69-4 mg/kg 23000 350000 NE <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191 <0.00191
1,2,3-TRICHLOROPROPANE 96-18-4 mg/kg 0.0051 0.11 NE <0.0037 <0.0037 <0.0037 <0.0037 J3 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037
1,2,4-TRIMETHYLBENZENE 95-63-6 mg/kg 300 1800 NE 0.00153 J <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 0.00164 J <0.00106 <0.00106 0.00198 J <0.00106 <0.00106 <0.00106 <0.00106
1,2,3-TRIMETHYLBENZENE 526-73-8 mg/kg 340 2000 NE <0.00144 <0.00144 <0.00144 <0.00144 <0.00144 <0.00144 <0.00144 <0.00144 <0.00144 <0.00144 <0.00144 <0.00144 <0.00144 <0.00144 <0.00144
1,3,5-TRIMETHYLBENZENE 108-67-8 mg/kg 270 1500 NE <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133
VINYL CHLORIDE 75-01-4 mg/kg 0.059 1.7 NE <0.00146 <0.00146 <0.00146 <0.00146 <0.00146 <0.00146 <0.00146 <0.00146 <0.00146 <0.00146 <0.00146 <0.00146 <0.00146 <0.00146 <0.00146
XYLENES, TOTAL 1330-20-7 mg/kg 580 2500 142 <0.00349 <0.00349 <0.00349 <0.00349 <0.00349 <0.00349 <0.00349 0.00615 J <0.00349 <0.00349 <0.00349 <0.00349 <0.00349 <0.00349 <0.00349
¹ Environmental Protection Agency Regional Screening Levels for Residential soil (November 2024; Target Hazard Quotient=1, Target Risk=10-6).
² Environmental Protection Agency Regional Screening Levels for Industrial soils (November 2024; Target Hazard Quotient=1, Target Risk=10-6).
³ Utah Department of Environmental Quality Initial Screening Level for petroleum hydrocarbons in soil.
Bold values were reported above laboratory reporting limit. Italicized values indicate reporting limits above the Screening Levels.
CAS: Chemical Abstracts Service, mg/kg: milligrams per kilogram, NA: not analyzed, NE: not established
< : Not reported at or above the indicated analytical reporting limit
Q: Qualifiers J: The identification of the analyte is acceptable; the reported value is an estimate.
J3: The associated batch QC was outside the established quality control range for precision. J4: The associated batch QC was outside the established quality control range for accuracy.
* 1,2-dichloropropane or trichloroethylene was reported at a concentration close to its regulatory screening levels in this sample. As these constituents were outside of their control limits for Precision in the field duplicate pair, their
analytical results are considered qualified and may not be acceptable for comparison to the screening levels.
11/12/2015 11/12/2015 11/11/201511/11/2015 11/11/2015 11/12/2015 11/12/2015 11/12/201511/11/2015 11/11/2015 11/11/2015 11/11/2015 11/11/2015
Lab Sample ID
Client Sample ID
Date Collected
SE-SB-01
10-10.5 FT
SE-SB-02
10-10.5 FT
SE-SB-03
10-10.5 FT
SE-SB-04
10-10.5 FT
SE-SB-05
10-11.5 FT
SE-SB-06
12.5-13 FT
SE-SB-07
10-10.5 FT
SE-SB-08
9.5-10.5 FT
11/11/2015
SE-SB-09
14-14.5 FT
SE-SB-10
8.5-9 FT
L800774-30 L800774-33 L800774-36 L800774-39 L800774-42 L800774-45
SE-SB-11
9.5-10 FT
SE-SB-12
10-10.5 FT
SE-SB-13
10-10.5 FT
11/11/2015
SE-SB-14
10-10.5 FT
L800774-03 L800774-06 L800774-09 L800774-12 L800774-15 L800774-18 L800774-21 L800774-24 L800774-27
SE-SB-15
10-10.5 FT
Page 1 of 2
Table 4B - Volatile Organic Compounds in Soil
Schovaers Electronics - 22 South Jeremy Street, Salt Lake City, Utah Lake City, Utah
Terracon Project No. 61241765
Analyte (Method 8260B)CAS # Units
Residential RSL1 Industrial RSL2 UDEQ ISL3
ACETONE 67-64-1 mg/kg 70000 1100000 NE
ACRYLONITRILE 107-13-1 mg/kg 0.25 1.1 NE
BENZENE 71-43-2 mg/kg 1.2 5.1 0.2
BROMOBENZENE 108-86-1 mg/kg 290 1800 NE
BROMODICHLOROMETHANE 75-27-4 mg/kg 0.29 1.3 NE
BROMOFORM 75-25-2 mg/kg 19 86 NE
BROMOMETHANE 74-83-9 mg/kg 6.8 30 NE
N-BUTYLBENZENE 104-51-8 mg/kg 3900 58000 NE
SEC-BUTYLBENZENE 135-98-8 mg/kg 7800 120000 NE
TERT-BUTYLBENZENE 98-06-6 mg/kg 7800 120000 NE
CARBON TETRACHLORIDE 56-23-5 mg/kg 0.65 2.9 NE
CHLOROBENZENE 108-90-7 mg/kg 280 1300 NE
CHLORODIBROMOMETHANE 124-48-1 mg/kg 8.3 39 NE
CHLOROETHANE 75-00-3 mg/kg 5400 23000 NE
2-CHLOROETHYL VINYL ETHER 110-78-8 mg/kg NE NE NE
CHLOROFORM 67-66-3 mg/kg 0.32 1.4 NE
CHLOROMETHANE 74-87-3 mg/kg 110 460 NE
2-CHLOROTOLUENE 95-49-8 mg/kg 1600 23000 NE
4-CHLOROTOLUENE 106-43-4 mg/kg 1600 23000 NE
1,2-DIBROMO-3-CHLOROPROPANE 96-12-8 mg/kg 0.0053 0.064 NE
1,2-DIBROMOETHANE 106-93-4 mg/kg 0.036 0.16 NE
DIBROMOMETHANE 74-95-3 mg/kg 24 99 NE
1,2-DICHLOROBENZENE 95-50-1 mg/kg 1800 9300 NE
1,3-DICHLOROBENZENE 541-73-1 mg/kg NE NE NE
1,4-DICHLOROBENZENE 106-46-7 mg/kg 2.6 11 NE
DICHLORODIFLUOROMETHANE 75-71-8 mg/kg 87 370 NE
1,1-DICHLOROETHANE 75-34-3 mg/kg 3.6 16 NE
1,2-DICHLOROETHANE 107-06-2 mg/kg 0.46 2 NE
1,1-DICHLOROETHENE 75-35-4 mg/kg 4.8 20 NE
CIS-1,2-DICHLOROETHENE 156-59-2 mg/kg 63 370 NE
TRANS-1,2-DICHLOROETHENE 156-60-5 mg/kg 70 300 NE
1,2-DICHLOROPROPANE 78-87-5 mg/kg 2.5 11 NE
1,1-DICHLOROPROPENE 75-35-4 mg/kg 4.8 20 NE
1,3-DICHLOROPROPANE 142-28-9 mg/kg 1600 23000 NE
CIS-1,3-DICHLOROPROPENE 10061-01-5 mg/kg NE NE NE
TRANS-1,3-DICHLOROPROPENE 10061-02-6 mg/kg NE NE NE
2,2-DICHLOROPROPANE 594-20-7 mg/kg NE NE NE
DI-ISOPROPYL ETHER 108-20-3 mg/kg 2200 9400 NE
ETHYLBENZENE 100-41-4 mg/kg 5.8 25 5
HEXACHLORO-1,3-BUTADIENE 87-68-3 mg/kg 1.2 5.3 NE
ISOPROPYLBENZENE 98-82-8 mg/kg 1900 9900 NE
P-ISOPROPYLTOLUENE 99-87-6 mg/kg 170 1100 NE
1,4-DIOXANE 123-91-1 mg/kg 5.3 24 NE
2-BUTANONE (MEK) 78-93-3 mg/kg 27000 190000 NE
METHYLENE CHLORIDE 75-09-2 mg/kg 57 1000 NE
4-METHYL-2-PENTANONE (MIBK) 108-10-1 mg/kg 33000 140000 NE
METHYL TERT-BUTYL ETHER 1634-04-4 mg/kg 47 210 0.3
NAPHTHALENE 91-20-3 mg/kg 2 8.6 51
N-PROPYLBENZENE 103-65-1 mg/kg 3800 24000 NE
STYRENE 100-42-5 mg/kg 6000 35000 NE
1,1,1,2-TETRACHLOROETHANE 630-20-6 mg/kg 2 8.8 NE
1,1,2,2-TETRACHLOROETHANE 79-34-5 mg/kg 0.6 2.7 NE
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 mg/kg 6700 28000 NE
TETRACHLOROETHENE 127-18-4 mg/kg 24 100 NE
TOLUENE 108-88-3 mg/kg 4900 47000 9
1,2,3-TRICHLOROBENZENE 87-61-6 mg/kg 63 930 NE
1,2,4-TRICHLOROBENZENE 120-82-1 mg/kg 24 110 NE
1,1,1-TRICHLOROETHANE 71-55-6 mg/kg 8100 36000 NE
1,1,2-TRICHLOROETHANE 79-00-5 mg/kg 1.1 5 NE
TRICHLOROETHENE 79-01-6 mg/kg 0.94 6 NE
TRICHLOROFLUOROMETHANE 75-69-4 mg/kg 23000 350000 NE
1,2,3-TRICHLOROPROPANE 96-18-4 mg/kg 0.0051 0.11 NE
1,2,4-TRIMETHYLBENZENE 95-63-6 mg/kg 300 1800 NE
1,2,3-TRIMETHYLBENZENE 526-73-8 mg/kg 340 2000 NE
1,3,5-TRIMETHYLBENZENE 108-67-8 mg/kg 270 1500 NE
VINYL CHLORIDE 75-01-4 mg/kg 0.059 1.7 NE
XYLENES, TOTAL 1330-20-7 mg/kg 580 2500 142
Lab Sample ID
Client Sample ID
Date Collected
Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q
0.0177 J J3 0.0211 J <0.0156 J3 <0.0183 J3 <0.0162 J3 <0.0166 J3 <0.0153 J3 <0.0191 J3 <0.0178 J3 0.0169 J J3 0.023 J J3 <0.0175 J3 <0.0175 J3 0.0417 J3
<0.00205 <0.00222 <0.00216 <0.00254 <0.00224 <0.00230 <0.00213 <0.00265 <0.00247 <0.00211 <0.00206 <0.00242 <0.00242 <0.00224
<0.000432 <0.000467 <0.000455 <0.000534 <0.000472 <0.000485 <0.000448 0.0178 <0.000521 <0.000445 <0.000434 <0.000510 <0.000511 0.0103
<0.00113 <0.00123 <0.00119 <0.00140 <0.00124 <0.00127 <0.00118 <0.00146 <0.00137 <0.00117 <0.00114 <0.00134 <0.00134 <0.00124
<0.000851 <0.000919 <0.000896 <0.00105 <0.000931 <0.000956 <0.000882 0.46 <0.00103 <0.000876 <0.000855 <0.00100 <0.00101 <0.000929
<0.00646 <0.00698 <0.00680 <0.00798 <0.00706 <0.00725 <0.00669 <0.00837 <0.00779 <0.00665 <0.00649 <0.00762 <0.00764 <0.00705
<0.00400 <0.00432 <0.00421 <0.00494 <0.00437 <0.00449 <0.00414 <0.00518 <0.00482 <0.00411 <0.00401 <0.00472 <0.00473 <0.00436
<0.00415 <0.00448 <0.00437 <0.00513 <0.00453 <0.00466 <0.00430 0.0067 J <0.00500 <0.00427 <0.00417 <0.00489 <0.00490 <0.00453
<0.00273 <0.00295 <0.00288 <0.00338 <0.00299 <0.00307 <0.00283 <0.00354 <0.00330 <0.00281 <0.00275 <0.00322 <0.00322 <0.00299
<0.00167 <0.00181 <0.00176 <0.00207 <0.00183 <0.00188 <0.00173 <0.00217 <0.00202 <0.00172 <0.00168 <0.00198 <0.00198 0.00191 J
<0.00117 <0.00126 <0.00123 <0.00144 <0.00128 <0.00131 <0.00121 <0.00152 <0.00141 <0.00120 <0.00117 <0.00138 <0.00137 <0.00127
<0.000619 <0.000669 <0.000652 <0.000765 <0.000677 <0.000695 <0.000641 <0.000802 <0.000746 <0.000637 <0.000622 <0.000730 <0.000731 <0.000676
<0.000486 <0.000525 <0.000512 <0.000601 <0.000531 <0.000546 <0.000504 <0.000630 <0.000586 <0.000500 <0.000488 <0.000574 <0.000574 <0.000530
<0.00117 <0.00126 <0.00123 <0.00144 <0.00128 <0.00131 <0.00121 <0.00152 <0.00141 <0.00120 <0.00117 <0.00138 <0.00137 <0.00127
NA NA NA NA NA NA NA NA NA NA NA NA NA NA
<0.000448 <0.000484 <0.000472 <0.000554 <0.000490 <0.000503 <0.000464 0.0117 <0.000541 0.000929 J <0.000450 <0.000529 <0.000530 0.00185 J
<0.00150 <0.00162 <0.00158 <0.00186 <0.00164 <0.00169 <0.00156 <0.00195 <0.00181 <0.00155 <0.00151 <0.00177 <0.00177 <0.00163
<0.000994 <0.00107 <0.00105 <0.00123 <0.00109 <0.00112 <0.00103 <0.00129 <0.00120 <0.00102 <0.000998 <0.00117 <0.00117 <0.00108
<0.00122 J4 <0.00132 <0.00129 J4 <0.00151 J4 <0.00133 J4 <0.00137 J4 <0.00126 J4 <0.00158 J4 <0.00147 J4 <0.00126 J4 <0.00123 J4 <0.00144 J4 <0.00144 J4 <0.00133 J4
<0.00551 <0.00595 <0.00580 <0.00681 <0.00602 <0.00619 <0.00571 <0.00714 <0.00664 <0.00567 <0.00553 <0.00650 <0.00651 <0.00601
<0.000567 <0.000613 <0.000597 <0.000701 <0.000620 <0.000637 <0.000588 <0.000735 <0.000684 <0.000584 <0.000570 <0.000669 <0.000671 <0.000619
<0.00108 <0.00117 <0.00114 <0.00134 <0.00118 <0.00121 <0.00112 <0.00140 <0.00130 <0.00111 <0.00109 <0.00127 <0.00128 <0.00118
<0.00157 <0.00169 <0.00165 <0.00194 <0.00171 <0.00176 <0.00162 <0.00203 <0.00189 <0.00161 <0.00157 <0.00185 <0.00185 <0.00170
<0.00184 <0.00198 <0.00193 <0.00227 <0.00201 <0.00206 <0.00190 <0.00238 <0.00221 <0.00189 <0.00184 <0.00217 <0.00217 <0.00201
0.00421 J 0.00442 J 0.00278 J 0.00281 J <0.00233 0.00286 J 0.00426 J 0.00402 J 0.00371 J 0.00361 J 0.003 J 0.00381 J 0.00604 J 0.00416 J
<0.000884 <0.000954 <0.000931 <0.00109 <0.000966 <0.000992 <0.000915 <0.00114 <0.00107 <0.000910 <0.000888 <0.00104 <0.00104 <0.000964
<0.000621 <0.000671 <0.000654 <0.000768 <0.000679 <0.000697 <0.000643 <0.000804 <0.000749 <0.000639 <0.000624 <0.000733 <0.000733 <0.000678
<0.000513 <0.000554 J4 <0.000540 <0.000634 <0.000561 <0.000576 <0.000532 0.00105 J <0.000619 <0.000528 <0.000515 <0.000605 0.00115 J <0.000560
<0.000540 <0.000583 <0.000569 <0.000668 <0.000590 <0.000606 <0.000560 <0.000700 <0.000651 <0.000556 <0.000543 <0.000637 <0.000638 <0.000589
<0.000746 <0.000805 <0.000785 <0.000921 <0.000815 <0.000837 <0.000772 <0.000965 <0.000899 <0.000767 <0.000749 <0.000879 <0.000881 <0.000813
<0.00155 <0.00167 <0.00163 <0.00191 <0.00169 <0.00173 <0.00160 <0.00200 <0.00186 <0.00159 <0.00155 <0.00182 <0.00183 <0.00168
<0.00137 <0.00148 <0.00144 <0.00170 <0.00150 <0.00154 <0.00142 2.11 * <0.00165 0.0574 <0.00138 <0.00162 <0.00162 0.0699
<0.000756 <0.000817 <0.000796 <0.000935 <0.000827 <0.000849 <0.000783 <0.000979 <0.000912 <0.000779 <0.000760 <0.000892 <0.000894 <0.000825
<0.00189 <0.00204 <0.00199 <0.00234 <0.00207 <0.00212 <0.00196 <0.00245 <0.00228 <0.00195 <0.00190 <0.00223 <0.00223 <0.00207
<0.000733 <0.000791 <0.000771 <0.000905 <0.000801 <0.000822 <0.000759 <0.000948 <0.000883 <0.000754 <0.000736 <0.000864 <0.000865 <0.000799
<0.00165 <0.00179 <0.00174 <0.00204 <0.00181 <0.00186 <0.00171 <0.00214 <0.00199 <0.00170 <0.00166 <0.00195 <0.00195 <0.00180
<0.000857 <0.000925 <0.000902 <0.00106 <0.000936 <0.000962 <0.000887 <0.00111 <0.00103 <0.000882 <0.000860 <0.00101 <0.00101 <0.000935
<0.000378 <0.000408 <0.000398 <0.000467 <0.000413 <0.000425 <0.000392 <0.000489 <0.000456 <0.000389 <0.000380 <0.000446 <0.000447 <0.000413
<0.000573 <0.000618 <0.000603 <0.000708 <0.000626 <0.000643 <0.000593 0.0238 <0.000690 <0.000589 <0.000575 <0.000676 <0.000676 0.0135
<0.0137 <0.0148 <0.0144 <0.0170 <0.0150 <0.0154 <0.0142 <0.0178 <0.0165 <0.0141 <0.0138 <0.0162 <0.0162 <0.0149
<0.000932 <0.00101 <0.000982 <0.00115 <0.00102 <0.00105 <0.000966 0.00856 <0.00112 <0.000960 <0.000936 <0.00110 <0.00110 0.00401
<0.00252 <0.00272 <0.00265 <0.00311 <0.00275 <0.00283 <0.00261 0.0173 <0.00303 <0.00259 <0.00253 <0.00297 <0.00297 0.00895
NA NA NA NA NA NA NA NA NA NA NA NA NA NA
<0.0135 <0.0146 <0.0142 <0.0167 <0.0148 <0.0152 <0.0140 <0.0175 <0.0163 <0.0139 <0.0136 <0.0159 <0.0160 <0.0147
<0.00717 <0.00775 <0.00755 <0.00887 <0.00784 <0.00805 <0.00743 <0.00928 <0.00865 <0.00738 <0.00720 <0.00846 <0.00848 <0.00783
<0.0108 <0.0117 <0.0114 <0.0134 <0.0118 <0.0121 <0.0112 <0.0140 <0.0130 <0.0111 <0.0109 <0.0127 <0.0128 <0.0118
<0.000319 <0.000344 <0.000336 <0.000394 <0.000348 <0.000358 <0.000330 <0.000413 <0.000384 <0.000328 <0.000320 <0.000376 <0.000376 <0.000348
<0.00337 <0.00364 <0.00355 <0.00417 <0.00368 <0.00378 <0.00349 0.11 <0.00406 0.00948 J <0.00339 <0.00398 <0.00398 0.042
<0.00128 <0.00138 <0.00134 <0.00158 <0.00139 <0.00143 <0.00132 0.0106 <0.00154 <0.00131 <0.00128 <0.00150 <0.00150 0.00734
<0.00295 <0.00319 <0.00311 <0.00365 <0.00322 <0.00331 <0.00306 <0.00382 <0.00356 <0.00304 <0.00296 <0.00348 <0.00348 <0.00322
<0.000540 <0.000583 <0.000569 <0.000668 <0.000590 <0.000606 <0.000560 <0.000700 <0.000651 <0.000556 <0.000543 <0.000637 <0.000638 <0.000589
<0.000421 <0.000455 <0.000444 <0.000521 <0.000461 <0.000473 <0.000436 <0.000545 <0.000508 <0.000434 <0.000423 <0.000497 <0.000498 <0.000460
<0.000729 <0.000788 <0.000768 <0.000901 <0.000797 <0.000819 <0.000755 <0.000944 <0.000879 <0.000751 <0.000732 <0.000860 <0.000861 <0.000796
<0.000756 <0.000817 <0.000796 <0.000935 <0.000827 <0.000849 <0.000783 0.00908 <0.000912 <0.000779 <0.000760 <0.000892 <0.000894 <0.000825
0.00325 J <0.00146 0.00315 J 0.0028 J 0.00444 J 0.00329 J 0.00311 J 0.112 <0.00163 0.0172 0.00273 J 0.00388 J 0.00748 0.0848
<0.000675 <0.000729 <0.000711 <0.000835 <0.000738 <0.000758 <0.000699 <0.000875 <0.000814 <0.000695 <0.000678 <0.000797 <0.000798 <0.000736
<0.00521 <0.00562 <0.00548 <0.00644 <0.00569 <0.00585 <0.00539 <0.00675 <0.00628 <0.00536 <0.00523 <0.00614 <0.00616 <0.00568
<0.000297 <0.000321 <0.000313 <0.000367 <0.000325 <0.000334 <0.000308 0.00692 <0.000358 <0.000306 <0.000298 <0.000351 <0.000350 <0.000324
<0.000954 <0.00103 <0.00100 <0.00118 <0.00104 <0.00107 <0.000988 <0.00124 <0.00115 <0.000982 <0.000958 <0.00113 <0.00113 <0.00104
0.0135 <0.000467 0.00783 <0.000534 0.000714 J 0.00142 0.0114 45.2 0.0214 0.986 *0.0196 0.0143 0.00915 1.54 *
<0.000540 <0.000583 <0.000569 <0.000668 <0.000590 <0.000606 <0.000560 <0.000700 <0.000651 <0.000556 <0.000543 <0.000637 <0.000638 <0.000589
<0.00551 <0.00595 <0.00580 <0.00681 <0.00602 <0.00619 <0.00571 <0.00714 <0.00664 <0.00567 <0.00553 <0.00650 <0.00651 <0.00601
0.00196 J <0.00135 0.00234 J <0.00155 <0.00137 <0.00141 <0.00130 0.108 0.00179 J 0.0102 0.00159 J 0.00192 J 0.00403 J 0.0577
<0.00124 <0.00134 <0.00131 <0.00154 <0.00136 <0.00139 <0.00129 0.0534 <0.00150 0.00425 J <0.00125 <0.00147 0.00161 J 0.0262
<0.00117 <0.00126 <0.00123 <0.00144 <0.00128 <0.00131 <0.00121 0.0324 <0.00141 0.00309 J <0.00117 <0.00138 <0.00137 0.0196
<0.000738 <0.000797 <0.000777 <0.000912 <0.000807 <0.000828 <0.000764 <0.000956 <0.000890 <0.000760 <0.000741 <0.000871 <0.000872 <0.000805
<0.00516 <0.00558 <0.00544 <0.00638 <0.00564 <0.00580 <0.00535 0.309 <0.00623 0.0301 <0.00519 <0.00609 0.00856 0.212
¹ Environmental Protection Agency Regional Screening Levels for Residential soil (November 2024; Target Hazard Quotient=1, Target Risk=10-6).
² Environmental Protection Agency Regional Screening Levels for Industrial soils (November 2024; Target Hazard Quotient=1, Target Risk=10-6).
³ Utah Department of Environmental Quality Initial Screening Level for petroleum hydrocarbons in soil.
Bold values were reported above laboratory reporting limit. Italicized values indicate reporting limits above the Screening Levels.
CAS: Chemical Abstracts Service, mg/kg: milligrams per kilogram, NA: not analyzed, NE: not established
< : Not reported at or above the indicated analytical reporting limit
Q: Qualifiers J: The identification of the analyte is acceptable; the reported value is an estimate.
J3: The associated batch QC was outside the established quality control range for precision. J4: The associated batch QC was outside the established quality control range for accuracy.
L995461-04 L995461-10 L995461-07 L995461-08
05/17/2018 05/17/2018 05/17/2018 05/17/2018
SE-SB-24
(3)
SE-SB-24
(7)
SE-SB-23
(3) SE-SB-23 (10)
L995461-05
SE-SB-22
(3)
L995461-15
05/17/2018 05/17/2018
SE-SB-19
(8)
SE-SB-20
(3)
L995461-16 L995461-12
SE-SB-22
(7)
L995461-09
SE-SB-18
(3) SE-SB-20 (11)
SE-SB-18
(8)
SE-SB-19
(4)
* 1,2-dichloropropane or trichloroethylene was reported at a concentration close to its regulatory screening levels in this sample. As these constituents were outside of their control limits for Precision in the field duplicate pair, their analytical
results are considered qualified and may not be acceptable for comparison to the screening levels.
05/17/2018
SE-SB-21
(3)
SE-SB-21
(7)
L995461-01 L995461-02
05/17/2018 05/17/201805/17/2018 05/17/2018 05/17/2018 05/17/2018 05/17/2018
L995461-13L995461-18 L995461-19
Page 2 of 2
Table 4C - Dissolved Metals in Groundwater
Schovaers Electronics - 22 South Jeremy Street, Salt Lake City, Utah
Terracon Project No. 61247165
L800774-01
SE-SB-01
11/11/2015
Method Analyte CAS # Units
EPA
Tapwater
RSL
EPA
MCL Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q
6020 ANTIMONY 7440-36-0 mg/l 0.0078 0.006 0.000748 J 0.00483 0.00094 J <0.00021 0.000916 J 0.00124 J 0.000543 J <0.00021 0.000371 J 0.000457 J 0.000477 J
6020 ARSENIC 7440-38-2 mg/l 0.000052 0.01 0.00383 0.00526 0.0015 J 0.00158 J 0.00182 J 0.00203 0.00147 J 0.000981 J 0.00712 0.000928 J 0.00405
6010B BERYLLIUM 7440-41-7 mg/l 0.025 0.004 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007
6010B CADMIUM 7440-43-9 mg/l 0.0018 0.005 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007
6010B CHROMIUM 3 7440-47-3 mg/l 22 0.1 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014 <0.0014
7199 CHROMIUM,
HEXAVALENT 18540-29-9 mg/l 0.00011 NE <0.00015 0.0002 J <0.00015 0.0002 J 0.0004 J 0.0002 J 0.0003 J <0.00015 <0.00015 <0.00015 <0.00015
6010B COPPER 7440-50-8 mg/l 0.8 1.3 <0.0053 <0.0053 <0.0053 <0.0053 <0.0053 <0.0053 <0.0053 <0.0053 <0.0053 <0.0053 <0.0053
6020 LEAD 7439-92-1 mg/l 0.010 0.010 0.000251 J 0.000313 J <0.00024 <0.00024 <0.00024 <0.00024 <0.00024 <0.00024 0.000402 J 0.000263 J <0.00024
7470A MERCURY 7439-97-6 mg/l 0.00063 0.002 <0.000049 <0.000049 <0.000049 0.0000493 J <0.000049 <0.000049 <0.000049 <0.000049 <0.000049 <0.000049 <0.000049
6010B NICKEL4 7440-02-0 mg/l 0.39 NE 0.00566 J 0.00702 J 0.00556 J <0.0049 0.00539 J 0.00819 J 0.00718 J <0.0049 <0.0049 0.00752 J 0.00577 J
6010B SELENIUM 7782-49-2 mg/l 0.1 0.05 <0.0074 <0.0074 0.0101 <0.0074 <0.0074 <0.0074 <0.0074 <0.0074 <0.0074 <0.0074 <0.0074
6010B SILVER 7440-22-4 mg/l 0.094 NE <0.0028 <0.0028 <0.0028 <0.0028 <0.0028 <0.0028 <0.0028 <0.0028 <0.0028 <0.0028 <0.0028
6020 THALLIUM 7440-28-0 mg/l 0.0002 0.002 <0.00019 <0.00019 <0.00019 <0.00019 <0.00019 <0.00019 <0.00019 <0.00019 <0.00019 <0.00019 <0.00019
6010B ZINC 7440-66-6 mg/l 6 NE 0.0141 J 0.0168 J <0.0059 <0.0059 <0.0059 <0.0059 <0.0059 <0.0059 <0.0059 <0.0059 <0.0059
FM pH NE su
NE NE 6.41 6.51 6.29 6.31 6.36 6.49 6.66 6.44 6.43 6.41 6.65
¹ Environmental Protection Agency Regional Screening Levels for Tapwater (November 2024; Target Hazard Quotient=1, Target Risk=10 -6).
² Environmental Protection Agency Maximum Contaminant Level (November 2024; Target Hazard Quotient=1, Target Risk=10 -6).
³ EPA Tapwater RSL is for Chromium III (soluble salts)
4 EPA Tapwater RSL is for Nickel Oxide.
Bold values were reported above laboratory reporting limit. Italicized values indicate reporting limits above the Screening Levels.
CAS: Chemical Abstracts Service. FM: field measure. mg/l: milligrams per liter. NE: not established. su: standard unit.
< : Not reported at or above the indicated analytical reporting limit
Q: Qualifiers -
J: The identification of the analyte is acceptable; the reported value is an estimate.
J6: The sample matrix interfered with the ability to make any accurate determination; spike value is low.
11/12/2015
L800774-04 L800774-07 L800774-10 L800774-13 L800774-16 L800774-19
11/11/2015 11/11/2015 11/11/2015 11/11/2015 11/11/2015
SE-SB-02 SE-SB-03 SE-SB-04 SE-SB-05 SE-SB-06 SE-SB-07 SE-SB-08 SE-SB-11
L800774-22 L800774-25 L800774-28 L800774-31Lab Sample ID
Client Sample ID
Date Collected
SE-SB-09 SE-SB-10
11/11/2015 11/12/2015 11/12/2015 11/12/2015
Page 1 of 2
Table 4C - Dissolved Metals in Groundwater
Schovaers Electronics - 22 South Jeremy Street, Salt Lake City, Utah
Terracon Project No. 61247165
Method Analyte CAS # Units
EPA
Tapwater
RSL
EPA
MCL
6020 ANTIMONY 7440-36-0 mg/l 0.0078 0.006
6020 ARSENIC 7440-38-2 mg/l 0.000052 0.01
6010B BERYLLIUM 7440-41-7 mg/l 0.025 0.004
6010B CADMIUM 7440-43-9 mg/l 0.0018 0.005
6010B CHROMIUM 3 7440-47-3 mg/l 22 0.1
7199 CHROMIUM,
HEXAVALENT 18540-29-9 mg/l 0.00011 NE
6010B COPPER 7440-50-8 mg/l 0.8 1.3
6020 LEAD 7439-92-1 mg/l 0.010 0.010
7470A MERCURY 7439-97-6 mg/l 0.00063 0.002
6010B NICKEL4 7440-02-0 mg/l 0.39 NE
6010B SELENIUM 7782-49-2 mg/l 0.1 0.05
6010B SILVER 7440-22-4 mg/l 0.094 NE
6020 THALLIUM 7440-28-0 mg/l 0.0002 0.002
6010B ZINC 7440-66-6 mg/l 6 NE
FM pH NE su
NE NE
Lab Sample ID
Client Sample ID
Date Collected
Result Q Result Q Result Q Result Q Result Q 0 Q Result Q Result Q Result Q Result Q Result Q
0.000279 J 0.00112 J 0.000428 J 0.000991 J <0.000754 <0.000754 <0.000754 <0.000754 <0.000754 0.000851 J <0.000754
0.0013 J 0.00418 0.00191 J 0.00175 J 0.00114 J 0.00376 <0.000250 0.000283 J 0.000637 J 0.00111 J 0.000613 J
<0.0007 <0.0007 <0.0007 <0.0007 <0.000700 <0.000700 <0.000700 <0.000700 <0.000700 <0.000700 <0.000700
<0.0007 <0.0007 <0.0007 <0.0007 <0.000700 <0.000700 <0.000700 <0.000700 <0.000700 <0.000700 <0.000700
<0.0014 <0.0014 <0.0014 <0.0014 <0.00140 <0.00140 <0.00140 0.00164 J <0.00140 <0.00140 <0.00140
0.0002 J <0.00015 <0.00015 <0.00015 0.0000234 J <0.0000200 0.000116 0.000096 0.0000857 0.000217 0.0000572 J J6
<0.0053 <0.0053 <0.0053 <0.0053 <0.00530 <0.00530 <0.00530 <0.00530 <0.00530 <0.00530 <0.00530
0.00026 J 0.000274 J 0.000255 J <0.00024 0.000256 J <0.000240 0.000388 J <0.000240 <0.000240 <0.000240 <0.000240
<0.000049 <0.000049 <0.000049 <0.000049 <0.0000490 <0.0000490 <0.0000490 <0.0000490 <0.0000490 <0.0000490 <0.0000490
<0.0049 <0.0049 <0.0049 <0.0049 0.00707 J <0.00490 0.00590 J <0.00490 <0.00490 <0.00490 0.00531 J
<0.0074 <0.0074 <0.0074 <0.0074 <0.00740 <0.00740 <0.00740 <0.00740 <0.00740 <0.00740 <0.00740
<0.0028 <0.0028 <0.0028 <0.0028 <0.00280 <0.00280 <0.00280 <0.00280 <0.00280 <0.00280 <0.00280
<0.00019 <0.00019 <0.00019 <0.00019 <0.000190 <0.000190 <0.000190 <0.000190 <0.000190 <0.000190 <0.000190
<0.0059 0.00704 J <0.0059 <0.0059 0.0203 J 0.0167 J 0.0219 J 0.00948 J 0.0155 J 0.0193 J 0.0225 J
6.68 6.31 6.35 6.13 7 7 7 7 7 7 7
¹ Environmental Protection Agency Regional Screening Levels for Tapwater (November 2024; Target Hazard Quotient=1, Target Risk=10 -6).
² Environmental Protection Agency Maximum Contaminant Level (November 2024; Target Hazard Quotient=1, Target Risk=10 -6).
³ EPA Tapwater RSL is for Chromium III (soluble salts)
4 EPA Tapwater RSL is for Nickel Oxide.
Bold values were reported above laboratory reporting limit. Italicized values indicate reporting limits above the Screening Levels.
CAS: Chemical Abstracts Service. FM: field measure. mg/l: milligrams per liter. NE: not established. su: standard unit.
< : Not reported at or above the indicated analytical reporting limit
Q: Qualifiers -
J: The identification of the analyte is acceptable; the reported value is an estimate.
J6: The sample matrix interfered with the ability to make any accurate determination; spike value is low.
L800774-40 L800774-43
SE-SB-14 SE-SB-15
11/11/2015 11/11/201511/12/2015 11/11/2015
SE-SB-12 SE-SB-13
L800774-34 L800774-37
05/17/2018 05/17/201805/17/2018 05/17/2018 05/17/2018 05/17/2018 05/17/2018
L995461-06 L995461-11
SE-SB-17 SE-SB-18 SE-SB-19 SE-SB-20 SE-SB-21 SE-SB-22 SE-SB-23
L995461-25 L995461-20 L995461-17 L995461-14 L995461-03
Page 2 of 2
Table 4D - Volatile Organic Compounds in Groundwater
Schovaers Electronics - 22 South Jeremy Street, Salt Lake City, Utah
Terracon Project No. 61247165
Analyte (Method 8260B) CAS # Units
EPA RSL
Tapwater1
EPA
MCL2
Utah
ISL3
EPA TGC
Residential
VISL4
EPA TGC
Commercial
VISL5 Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q
ACETONE 67-64-1 mg/l 18 NE NE NE NE <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
ACROLEIN 107-02-8 mg/l 0.000042 NE NE 0.00418 0.0176 <0.00887 <0.00887 J5 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887
ACRYLONITRILE 107-13-1 mg/l 0.000052 NE NE 0.00732 0.032 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187
BENZENE 71-43-2 mg/l 0.00046 0.005 0.005 0.00159 0.00693 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331
BROMOBENZENE 108-86-1 mg/l 0.062 NE NE 0.62 2.6 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352
BROMODICHLOROMETHANE 75-27-4 mg/l 0.00013 0.08 NE 0.000876 0.00382 <0.00038 <0.00038 <0.00038 <0.00038 <0.00038 <0.00038 <0.00038 <0.00038 <0.00038 <0.00038
BROMOFORM 75-25-2 mg/l 0.0033 0.08 NE 0.117 0.51 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469
BROMOMETHANE 74-83-9 mg/l 0.0075 NE NE 0.0174 0.073 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866
N-BUTYLBENZENE 104-51-8 mg/l 1 NE NE NE NE <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361
SEC-BUTYLBENZENE 135-98-8 mg/l 2 NE NE NE NE <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365
TERT-BUTYLBENZENE 98-06-6 mg/l 0.69 NE NE NE NE <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399
CARBON TETRACHLORIDE 56-23-5 mg/l 0.00046 0.005 NE 0.000415 0.00181 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379
CHLOROBENZENE 108-90-7 mg/l 0.078 0.1 NE 0.41 1.72 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348
CHLORODIBROMOMETHANE 124-48-1 mg/l 0.00087 0.08 NE NE NE <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327
CHLOROETHANE 75-00-3 mg/l 8.3 NE NE 9.19 38.6 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453
2-CHLOROETHYL VINYL ETHER 110-75-8 mg/l NE NE NE NE NE <0.00301 <0.00301 J3, J6 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301
CHLOROFORM 67-66-3 mg/l 0.00022 0.08 NE 0.000814 0.00355 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324
CHLOROMETHANE 74-87-3 mg/l 0.19 NE NE 0.26 1.09 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276
2-CHLOROTOLUENE 95-49-8 mg/l 0.24 NE NE NE NE <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375
4-CHLOROTOLUENE 106-43-4 mg/l 0.25 NE NE NE NE <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351
1,2-DIBROMO-3-CHLOROPROPANE 96-12-8 mg/l 3.34E-07 0.0002 NE 0.0000281 0.00034 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133
1,2-DIBROMOETHANE 106-93-4 mg/l 0.0000075 0.00005 NE 0.000176 0.000769 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381
DIBROMOMETHANE 74-95-3 mg/l 0.0083 NE NE 0.124 0.521 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346
1,2-DICHLOROBENZENE 95-50-1 mg/l 0.3 0.6 NE 2.66 11.2 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349
1,3-DICHLOROBENZENE 541-73-1 mg/l NE NE NE NE NE <0.00022 <0.00022 <0.00022 <0.00022 <0.00022 <0.00022 <0.00022 <0.00022 <0.00022 <0.00022
1,4-DICHLOROBENZENE 106-46-7 mg/l 0.00048 0.075 NE 0.00259 0.0113 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274
DICHLORODIFLUOROMETHANE 75-71-8 mg/l 0.2 NE NE 0.00744 0.0312 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551
1,1-DICHLOROETHANE 75-34-3 mg/l 0.0028 NE NE 0.00764 0.0334 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259
1,2-DICHLOROETHANE 107-06-2 mg/l 0.00017 0.005 NE 0.00224 0.00978 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361
1,1-DICHLOROETHENE 75-35-4 mg/l 0.0082 0.007 NE 0.00387 0.0163 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398
CIS-1,2-DICHLOROETHENE 156-59-2 mg/l 0.025 0.07 NE 0.25 1.05 <0.00026 <0.00026 <0.00026 <0.00026 <0.00026 <0.00026 0.0192 <0.00026 <0.00026 <0.00026
TRANS-1,2-DICHLOROETHENE 156-60-5 mg/l 0.068 0.1 NE 0.109 0.457 <0.000396 <0.000396 <0.000396 <0.000396 <0.000396 <0.000396 0.000412 J <0.000396 <0.000396 <0.000396
1,2-DICHLOROPROPANE 78-87-5 mg/l 0.00085 0.005 NE 0.00658 0.0287 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306
1,1-DICHLOROPROPENE 563-58-6 mg/l NE NE NE NE NE <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352
1,3-DICHLOROPROPANE 142-28-9 mg/l 0.37 NE NE NE NE <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366
CIS-1,3-DICHLOROPROPENE 10061-01-5 mg/l NE NE NE NE NE <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418
TRANS-1,3-DICHLOROPROPENE 10061-02-6 mg/l NE NE NE NE NE <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419
2,2-DICHLOROPROPANE 594-20-7 mg/l NE NE NE NE NE <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321
DI-ISOPROPYL ETHER 108-20-3 mg/l 1.5 NE NE 6.97 29.3 <0.00032 <0.00032 <0.00032 <0.00032 <0.00032 <0.00032 <0.00032 <0.00032 <0.00032 <0.00032
ETHYLBENZENE 100-41-4 mg/l 0.0015 0.7 0.7 0.00349 0.0152 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384
HEXACHLORO-1,3-BUTADIENE 87-68-3 mg/l 0.00014 NE NE 0.000303 0.00132 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256
ISOPROPYLBENZENE 98-82-8 mg/l 0.45 NE NE 0.887 3.73 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326
P-ISOPROPYLTOLUENE 99-87-6 mg/l 0.021 NE NE 0.0928 0.39 <0.00035 <0.00035 <0.00035 <0.00035 <0.00035 <0.00035 <0.00035 <0.00035 <0.00035 <0.00035
1,4-DIOXANE 123-91-1 mg/l 0.00046 NE NE 2.86 12.5 <0.000597 <0.000597 <0.000597 <0.000597 <0.000597 <0.000597 <0.000597 <0.000597 <0.000597 <0.000597
2-BUTANONE (MEK) 78-93-3 mg/l 5.6 NE NE 2240 9410 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393
METHYLENE CHLORIDE 75-09-2 mg/l 0.011 0.005 NE 0.763 9.23 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
4-METHYL-2-PENTANONE (MIBK) 108-10-1 mg/l 6.3 NE NE 555 2330 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214
METHYL TERT-BUTYL ETHER 1634-04-4 mg/l 0.014 NE 0.2 0.45 1.97 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367
NAPHTHALENE 91-20-3 mg/l 0.00012 NE 0.7 0.00459 0.0201 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
N-PROPYLBENZENE 103-65-1 mg/l 0.66 NE NE 2.43 10.2 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349
STYRENE 100-42-5 mg/l 1.2 0.1 NE 9.28 39 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307
1,1,1,2-TETRACHLOROETHANE 630-20-6 mg/l 0.00057 NE NE 0.00371 0.0162 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385
1,1,2,2-TETRACHLOROETHANE 79-34-5 mg/l 0.000076 NE NE 0.00323 0.0141 <0.00013 <0.00013 <0.00013 <0.00013 <0.00013 <0.00013 <0.00013 <0.00013 <0.00013 <0.00013
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 mg/l 10 NE NE 0.242 1.02 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303
TETRACHLOROETHENE 127-18-4 mg/l 0.011 0.005 NE 0.0149 0.0652 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372
TOLUENE 108-88-3 mg/l 1.1 1.0 1.0 19.2 80.7 <0.00078 <0.00078 <0.00078 <0.00078 <0.00078 <0.00078 <0.00078 <0.00078 <0.00078 <0.00078
1,2,3-TRICHLOROBENZENE 87-61-6 mg/l 0.007 NE NE NE NE <0.00023 <0.00023 <0.00023 <0.00023 <0.00023 <0.00023 <0.00023 <0.00023 <0.00023 <0.00023
1,2,4-TRICHLOROBENZENE 120-82-1 mg/l 0.0012 0.07 NE 0.0359 0.151 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355
1,1,1-TRICHLOROETHANE 71-55-6 mg/l 8 0.2 NE 7.42 31.1 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319
1,1,2-TRICHLOROETHANE 79-00-5 mg/l 0.00028 0.005 NE 0.00521 0.0228 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383
TRICHLOROETHENE 79-01-6 mg/l 0.00049 0.005 NE 0.00119 0.00743 <0.000398 <0.000398 0.00487 0.00727 0.00739 0.0255 0.0109 <0.000398 <0.000398 0.000917 J
TRICHLOROFLUOROMETHANE 75-69-4 mg/l 5.2 NE NE NE NE <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012
1,2,3-TRICHLOROPROPANE 96-18-4 mg/l 0.00000075 NE NE 0.0223 0.0937 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807
1,2,4-TRIMETHYLBENZENE 95-63-6 mg/l 0.056 NE NE 0.248 1.04 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373
1,2,3-TRIMETHYLBENZENE 526-73-8 mg/l 0.055 NE NE 0.351 1.47 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321
1,3,5-TRIMETHYLBENZENE 108-67-8 mg/l 0.06 NE NE 0.175 0.733 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387
VINYL CHLORIDE 75-01-4 mg/l 0.000019 0.002 NE 0.000147 0.00245 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259
XYLENES, TOTAL 1330-20-7 mg/l 0.19 10 10 0.385 1.62 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106
1 Environmental Protection Agency Regional Screening Levels for Tapwater (November 2024; Target Hazard Quotient=1, Target Risk=10-6).
2 Environmental Protection Agency Maximum Contaminant Level (November 2024; Target Hazard Quotient=1, Target Risk=10-6).
3 Utah Department of Environmental Quality Initial Screening Level (isl)
4 Environmental Protection Agency Residential Target Groundwater Concentration (May 2018; Target Hazard Quotient=1, Target Risk=10-6).
5 Environmental Protection Agency Industrial Target Groundwater Concentration (May 2018; Target Hazard Quotient=1, Target Risk=10-6).
Bold values were reported above laboratory reporting limit. Italicized values indicate reporting limits above the Screening Levels.
CAS: Chemical Abstracts Service, mg/l: milligrams per liter, NA: not analyzed, NE: not established
< : Not reported at or above the indicated analytical reporting limit
Q: Qualifiers -
J: The identification of the analyte is acceptable; the reported value is an estimate.
J3: The associated batch QC was outside the established quality control range for precision.
J5: The sample matrix interfered with the ability to make any accurate determination; spike value is high.
J6: The sample matrix interfered with the ability to make any accurate determination; spike value is low.
SE-SB-07 SE-SB-08 SE-SB-09 SE-SB-10
L800774-19 L800774-22 L800774-25 L800774-28
11/11/2015 11/11/2015 11/11/2015Date Collected 11/12/201511/11/2015 11/11/2015 11/11/2015 11/11/2015 11/12/2015
Lab Sample ID
SE-SB-04 SE-SB-05 SE-SB-06
L800774-10 L800774-13 L800774-16
SE-SB-01 SE-SB-02 SE-SB-03Client Sample ID
L800774-01 L800774-04 L800774-07
11/12/2015
Page 1 of 2
Table 4D - Volatile Organic Compounds in Groundwater
Schovaers Electronics - 22 South Jeremy Street, Salt Lake City, Utah
Terracon Project No. 61247165
Analyte (Method 8260B) CAS # Units
EPA RSL
Tapwater1
EPA
MCL2
Utah
ISL3
EPA TGC
Residential
VISL4
EPA TGC
Commercial
VISL5
ACETONE 67-64-1 mg/l 18 NE NE NE NE
ACROLEIN 107-02-8 mg/l 0.000042 NE NE 0.00418 0.0176
ACRYLONITRILE 107-13-1 mg/l 0.000052 NE NE 0.00732 0.032
BENZENE 71-43-2 mg/l 0.00046 0.005 0.005 0.00159 0.00693
BROMOBENZENE 108-86-1 mg/l 0.062 NE NE 0.62 2.6
BROMODICHLOROMETHANE 75-27-4 mg/l 0.00013 0.08 NE 0.000876 0.00382
BROMOFORM 75-25-2 mg/l 0.0033 0.08 NE 0.117 0.51
BROMOMETHANE 74-83-9 mg/l 0.0075 NE NE 0.0174 0.073
N-BUTYLBENZENE 104-51-8 mg/l 1 NE NE NE NE
SEC-BUTYLBENZENE 135-98-8 mg/l 2 NE NE NE NE
TERT-BUTYLBENZENE 98-06-6 mg/l 0.69 NE NE NE NE
CARBON TETRACHLORIDE 56-23-5 mg/l 0.00046 0.005 NE 0.000415 0.00181
CHLOROBENZENE 108-90-7 mg/l 0.078 0.1 NE 0.41 1.72
CHLORODIBROMOMETHANE 124-48-1 mg/l 0.00087 0.08 NE NE NE
CHLOROETHANE 75-00-3 mg/l 8.3 NE NE 9.19 38.6
2-CHLOROETHYL VINYL ETHER 110-75-8 mg/l NE NE NE NE NE
CHLOROFORM 67-66-3 mg/l 0.00022 0.08 NE 0.000814 0.00355
CHLOROMETHANE 74-87-3 mg/l 0.19 NE NE 0.26 1.09
2-CHLOROTOLUENE 95-49-8 mg/l 0.24 NE NE NE NE
4-CHLOROTOLUENE 106-43-4 mg/l 0.25 NE NE NE NE
1,2-DIBROMO-3-CHLOROPROPANE 96-12-8 mg/l 3.34E-07 0.0002 NE 0.0000281 0.00034
1,2-DIBROMOETHANE 106-93-4 mg/l 0.0000075 0.00005 NE 0.000176 0.000769
DIBROMOMETHANE 74-95-3 mg/l 0.0083 NE NE 0.124 0.521
1,2-DICHLOROBENZENE 95-50-1 mg/l 0.3 0.6 NE 2.66 11.2
1,3-DICHLOROBENZENE 541-73-1 mg/l NE NE NE NE NE
1,4-DICHLOROBENZENE 106-46-7 mg/l 0.00048 0.075 NE 0.00259 0.0113
DICHLORODIFLUOROMETHANE 75-71-8 mg/l 0.2 NE NE 0.00744 0.0312
1,1-DICHLOROETHANE 75-34-3 mg/l 0.0028 NE NE 0.00764 0.0334
1,2-DICHLOROETHANE 107-06-2 mg/l 0.00017 0.005 NE 0.00224 0.00978
1,1-DICHLOROETHENE 75-35-4 mg/l 0.0082 0.007 NE 0.00387 0.0163
CIS-1,2-DICHLOROETHENE 156-59-2 mg/l 0.025 0.07 NE 0.25 1.05
TRANS-1,2-DICHLOROETHENE 156-60-5 mg/l 0.068 0.1 NE 0.109 0.457
1,2-DICHLOROPROPANE 78-87-5 mg/l 0.00085 0.005 NE 0.00658 0.0287
1,1-DICHLOROPROPENE 563-58-6 mg/l NE NE NE NE NE
1,3-DICHLOROPROPANE 142-28-9 mg/l 0.37 NE NE NE NE
CIS-1,3-DICHLOROPROPENE 10061-01-5 mg/l NE NE NE NE NE
TRANS-1,3-DICHLOROPROPENE 10061-02-6 mg/l NE NE NE NE NE
2,2-DICHLOROPROPANE 594-20-7 mg/l NE NE NE NE NE
DI-ISOPROPYL ETHER 108-20-3 mg/l 1.5 NE NE 6.97 29.3
ETHYLBENZENE 100-41-4 mg/l 0.0015 0.7 0.7 0.00349 0.0152
HEXACHLORO-1,3-BUTADIENE 87-68-3 mg/l 0.00014 NE NE 0.000303 0.00132
ISOPROPYLBENZENE 98-82-8 mg/l 0.45 NE NE 0.887 3.73
P-ISOPROPYLTOLUENE 99-87-6 mg/l 0.021 NE NE 0.0928 0.39
1,4-DIOXANE 123-91-1 mg/l 0.00046 NE NE 2.86 12.5
2-BUTANONE (MEK) 78-93-3 mg/l 5.6 NE NE 2240 9410
METHYLENE CHLORIDE 75-09-2 mg/l 0.011 0.005 NE 0.763 9.23
4-METHYL-2-PENTANONE (MIBK) 108-10-1 mg/l 6.3 NE NE 555 2330
METHYL TERT-BUTYL ETHER 1634-04-4 mg/l 0.014 NE 0.2 0.45 1.97
NAPHTHALENE 91-20-3 mg/l 0.00012 NE 0.7 0.00459 0.0201
N-PROPYLBENZENE 103-65-1 mg/l 0.66 NE NE 2.43 10.2
STYRENE 100-42-5 mg/l 1.2 0.1 NE 9.28 39
1,1,1,2-TETRACHLOROETHANE 630-20-6 mg/l 0.00057 NE NE 0.00371 0.0162
1,1,2,2-TETRACHLOROETHANE 79-34-5 mg/l 0.000076 NE NE 0.00323 0.0141
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 mg/l 10 NE NE 0.242 1.02
TETRACHLOROETHENE 127-18-4 mg/l 0.011 0.005 NE 0.0149 0.0652
TOLUENE 108-88-3 mg/l 1.1 1.0 1.0 19.2 80.7
1,2,3-TRICHLOROBENZENE 87-61-6 mg/l 0.007 NE NE NE NE
1,2,4-TRICHLOROBENZENE 120-82-1 mg/l 0.0012 0.07 NE 0.0359 0.151
1,1,1-TRICHLOROETHANE 71-55-6 mg/l 8 0.2 NE 7.42 31.1
1,1,2-TRICHLOROETHANE 79-00-5 mg/l 0.00028 0.005 NE 0.00521 0.0228
TRICHLOROETHENE 79-01-6 mg/l 0.00049 0.005 NE 0.00119 0.00743
TRICHLOROFLUOROMETHANE 75-69-4 mg/l 5.2 NE NE NE NE
1,2,3-TRICHLOROPROPANE 96-18-4 mg/l 0.00000075 NE NE 0.0223 0.0937
1,2,4-TRIMETHYLBENZENE 95-63-6 mg/l 0.056 NE NE 0.248 1.04
1,2,3-TRIMETHYLBENZENE 526-73-8 mg/l 0.055 NE NE 0.351 1.47
1,3,5-TRIMETHYLBENZENE 108-67-8 mg/l 0.06 NE NE 0.175 0.733
VINYL CHLORIDE 75-01-4 mg/l 0.000019 0.002 NE 0.000147 0.00245
XYLENES, TOTAL 1330-20-7 mg/l 0.19 10 10 0.385 1.62
Date Collected
Lab Sample ID
Client Sample ID
Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q Result Q
<0.01 <0.01 <0.01 <0.01 <0.01 <0.0100 <0.0100 <0.0100 <0.0100 <0.0100 <0.0100 <0.0100
<0.00887 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887 <0.00887
<0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187 <0.00187
<0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331 <0.000331
<0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352
<0.00038 <0.00038 <0.00038 <0.00038 <0.00038 <0.000380 <0.000380 <0.000380 <0.000380 <0.000380 <0.000380 <0.000380
<0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469 <0.000469
<0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866 <0.000866
<0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361
<0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365 <0.000365
<0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399 <0.000399
<0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379 <0.000379
<0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348 <0.000348
<0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327 <0.000327
<0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453 <0.000453
<0.00301 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301 <0.00301
<0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324 <0.000324
<0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276 <0.000276
<0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375 <0.000375
<0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351 <0.000351
<0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133 <0.00133
<0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381 <0.000381
<0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346 <0.000346
<0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349
<0.00022 <0.00022 <0.00022 <0.00022 <0.00022 <0.000220 <0.000220 <0.000220 <0.000220 <0.000220 <0.000220 <0.000220
<0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274 <0.000274
<0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551 <0.000551
<0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259
<0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361 <0.000361
<0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398 <0.000398
<0.00026 <0.00026 0.000367 J <0.00026 <0.00026 <0.000260 <0.000260 <0.000260 <0.000260 <0.000260 <0.000260 <0.000260
<0.000396 <0.000396 <0.000396 <0.000396 <0.000396 <0.000396 <0.000396 <0.000396 <0.000396 <0.000396 <0.000396 <0.000396
<0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306 <0.000306
<0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352 <0.000352
<0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366 <0.000366
<0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418 <0.000418
<0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419 <0.000419
<0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321
<0.00032 <0.00032 <0.00032 <0.00032 <0.00032 <0.000320 <0.000320 <0.000320 <0.000320 <0.000320 <0.000320 <0.000320
<0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384 <0.000384
<0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256 <0.000256
<0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326 <0.000326
<0.00035 <0.00035 <0.00035 <0.00035 <0.00035 <0.000350 <0.000350 <0.000350 <0.000350 <0.000350 <0.000350 <0.000350
<0.000597 <0.000597 <0.000597 <0.000597 <0.000597 NA NA NA NA NA NA NA
<0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393 <0.00393
<0.001 <0.001 <0.001 <0.001 <0.001 <0.00100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00100
<0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214 <0.00214
<0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367 <0.000367
<0.001 <0.001 <0.001 <0.001 <0.001 <0.00100 J3 <0.00100 J3 <0.00100 J3 <0.00100 J3 <0.00100 J3 <0.00100 J3 <0.00100 J3
<0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349 <0.000349
<0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307 <0.000307
<0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385 <0.000385
<0.00013 <0.00013 <0.00013 <0.00013 <0.00013 <0.000130 <0.000130 <0.000130 <0.000130 <0.000130 <0.000130 <0.000130
<0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303 <0.000303
<0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372 <0.000372
<0.00078 <0.00078 <0.00078 <0.00078 <0.00078 <0.000412 <0.000412 <0.000412 <0.000412 <0.000412 <0.000412 <0.000412
<0.00023 <0.00023 <0.00023 <0.00023 <0.00023 <0.000230 J3 <0.000230 J3 <0.000230 J3 <0.000230 J3 <0.000230 J3 <0.000230 J3 <0.000230 J3
<0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355 <0.000355
<0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319 <0.000319
<0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383 <0.000383
0.000542 J <0.000398 <0.000398 <0.000398 <0.000398 0.0195 0.00251 <0.000398 0.000834 J 0.0766 0.00888 0.0107
<0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.00120 <0.00120 <0.00120 <0.00120 <0.00120 <0.00120 <0.00120
<0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807 <0.000807
<0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373 <0.000373
<0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321 <0.000321
<0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387 <0.000387
<0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259 <0.000259
<0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106 <0.00106
1 Environmental Protection Agency Regional Screening Levels for Tapwater (November 2024; Target Hazard Quotient=1, Target Risk=10-6).
2 Environmental Protection Agency Maximum Contaminant Level (November 2024; Target Hazard Quotient=1, Target Risk=10-6).
3 Utah Department of Environmental Quality Initial Screening Level (isl)
4 Environmental Protection Agency Residential Target Groundwater Concentration (May 2018; Target Hazard Quotient=1, Target Risk=10-6).
5 Environmental Protection Agency Industrial Target Groundwater Concentration (May 2018; Target Hazard Quotient=1, Target Risk=10-6).
Bold values were reported above laboratory reporting limit. Italicized values indicate reporting limits above the Screening Levels.
CAS: Chemical Abstracts Service, mg/l: milligrams per liter, NA: not analyzed, NE: not established
< : Not reported at or above the indicated analytical reporting limit
Q: Qualifiers -
J: The identification of the analyte is acceptable; the reported value is an estimate.
J3: The associated batch QC was outside the established quality control range for precision.
J5: The sample matrix interfered with the ability to make any accurate determination; spike value is high.
J6: The sample matrix interfered with the ability to make any accurate determination; spike value is low.
L995461-06 L995461-11
SE-SB-17 SE-SB-18 SE-SB-19 SE-SB-20 SE-SB-21 SE-SB-22 SE-SB-23
L995461-25 L995461-20 L995461-17 L995461-14 L995461-03
11/12/2015 11/12/2015 05/17/2018 05/17/201811/11/2015 11/11/2015 11/11/2015
L800774-43
SE-SB-11 SE-SB-12 SE-SB-13 SE-SB-14 SE-SB-15
L800774-31 L800774-34 L800774-37 L800774-40
05/17/2018 05/17/201805/17/2018 05/17/2018 05/17/2018
Page 2 of 2
Analyte (Method TO-15)CAS #Units EPA VISL:
Residential 1
EPA VISL:
Commercial 2 Result Q Result Q Result Q Result Q
ACETONE 67-64-1 ug/m3 NE NE 312 E 24.3 233 35.7
ALLYL CHLORIDE 107-05-1 ug/m3 15.6 68.1 <1.25 <1.25 <1.25 <1.25
BENZENE 71-43-2 ug/m3 12 52.4 <1.28 <1.28 <1.28 <1.28
BENZYL CHLORIDE 100-44-7 ug/m3 1.91 8.34 <2.08 <2.08 <2.08 <2.08
BROMODICHLOROMETHANE 75-27-4 ug/m3 2.53 11 <2.68 <2.68 <2.68 <2.68
BROMOFORM 75-25-2 ug/m3 85.1 372 <12.4 <12.4 <12.4 <12.4
BROMOMETHANE 74-83-9 ug/m3 174 730 <1.55 <1.55 <1.55 <1.55
1,3-BUTADIENE 106-99-0 ug/m3 3.12 13.6 <8.85 <8.85 <8.85 <8.85
CARBON DISULFIDE 75-15-0 ug/m3 NE NE <1.24 <1.24 <1.24 <1.24
CARBON TETRACHLORIDE 56-23-5 ug/m3 15.6 68.1 <2.52 <2.52 <2.52 <2.52
CHLOROBENZENE 108-90-7 ug/m3 1740 7300 <1.85 <1.85 <1.85 <1.85
CHLOROETHANE 75-00-3 ug/m3 139000 584000 <1.06 <1.06 <1.06 <1.06
CHLOROFORM 67-66-3 ug/m3 4.07 17.8 <1.95 <1.95 <1.95 <1.95
CHLOROMETHANE 74-87-3 ug/m3 3130 13100 <0.826 <0.826 <0.826 <0.826
2-CHLOROTOLUENE 95-49-8 ug/m3 NE NE <2.06 <2.06 <2.06 <2.06
CYCLOHEXANE 110-82-7 ug/m3 209000 876000 <1.38 <1.38 <1.38 <1.38
CHLORODIBROMOMETHANE 124-48-1 ug/m3 NE NE <3.40 <3.40 <3.40 <3.40
1,2-DIBROMOETHANE 106-93-4 ug/m3 0.156 0.681 <3.08 <3.08 <3.08 <3.08
1,2-DICHLOROBENZENE 95-50-1 ug/m3 6950 29200 <2.40 <2.40 <2.40 <2.40
1,3-DICHLOROBENZENE 541-73-1 ug/m3 NE NE <2.40 <2.40 <2.40 <2.40
1,4-DICHLOROBENZENE 106-46-7 ug/m3 8.51 37.2 <2.40 <2.40 <2.40 <2.40
1,2-DICHLOROETHANE 107-06-2 ug/m3 3.6 15.7 <1.62 <1.62 <1.62 <1.62
1,1-DICHLOROETHANE 75-34-3 ug/m3 58.5 256 <1.60 <1.60 <1.60 <1.60
1,1-DICHLOROETHENE 75-35-4 ug/m3 138 578 <1.59 <1.59 <1.59 <1.59
CIS-1,2-DICHLOROETHENE 156-59-2 ug/m3 1390 5840 <1.59 <1.59 <1.59 <1.59
TRANS-1,2-DICHLOROETHENE 156-60-5 ug/m3 1390 5840 <1.59 <1.59 <1.59 <1.59
1,2-DICHLOROPROPANE 78-87-5 ug/m3 25.3 110 <1.85 <1.85 <1.85 <1.85
CIS-1,3-DICHLOROPROPENE 10061-01-5 ug/m3 NE NE <1.82 <1.82 <1.82 <1.82
TRANS-1,3-DICHLOROPROPENE 10061-02-6 ug/m3 NE NE <1.82 <1.82 <1.82 <1.82
1,4-DIOXANE 123-91-1 ug/m3 18.7 81.8 <1.44 <1.44 6.34 <1.44
ETHANOL 64-17-5 ug/m3 NE NE 138 40 52.9 38.4
ETHYLBENZENE 100-41-4 ug/m3 37.4 164 1.9 <1.73 11 <1.73
4-ETHYLTOLUENE 622-96-8 ug/m3 NE NE 4.97 3.86 14.6 4.44
TRICHLOROFLUOROMETHANE 75-69-4 ug/m3 NE NE <2.25 <2.25 <2.25 <2.25
DICHLORODIFLUOROMETHANE 75-71-8 ug/m3 3480 NE <1.98 2 <1.98 1.98
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 ug/m3 174000 730000 <3.07 <3.07 <3.07 <3.07
1,2-DICHLOROTETRAFLUOROETHANE 76-14-2 ug/m3 NE NE <2.80 <2.80 <2.80 <2.80
HEPTANE 142-82-5 ug/m3 13900 58400 1.99 1.71 1.79 <1.64
HEXACHLORO-1,3-BUTADIENE 87-68-3 ug/m3 4.25 18.6 <13.5 <13.5 <13.5 <13.5
N-HEXANE 110-54-3 ug/m3 24300 102000 <1.41 <1.41 <1.41 <1.41
ISOPROPYLBENZENE 98-82-8 ug/m3 13900 NE <1.97 <1.97 14.5 <1.97
METHYLENE CHLORIDE 75-09-2 ug/m3 3380 40900 1.98 2.04 7.01 2.94
METHYL BUTYL KETONE 591-78-6 ug/m3 1040 4380 <10.2 <10.2 11.2 <10.2
2-BUTANONE (MEK)78-93-3 ug/m3 174000 730000 43.4 <7.37 5190 20.8
4-METHYL-2-PENTANONE (MIBK)108-10-1 ug/m3 104000 438000 <10.2 <10.2 137 <10.2
METHYL METHACRYLATE 80-62-6 ug/m3 24300 102000 <1.64 <1.64 <1.64 <1.64
METHYL TERT-BUTYL ETHER 1634-04-4 ug/m3 360 NE <1.44 <1.44 <1.44 <1.44
NAPHTHALENE 91-20-3 ug/m3 2.75 12 <6.60 7.24 24.4 <6.60
2-PROPANOL 67-63-0 ug/m3 6950 29200 205 55.4 49.3 36.5
PROPENE 115-07-1 ug/m3 104000 438000 <1.38 <1.38 3.28 <1.38
STYRENE 100-42-5 ug/m3 34800 NE <1.70 <1.70 <1.70 <1.70
1,1,2,2-TETRACHLOROETHANE 79-34-5 ug/m3 1.61 7.05 <2.75 <2.75 <2.75 <2.75
TETRACHLOROETHENE 127-18-4 ug/m3 360 1570 <2.72 <2.72 <2.72 <2.72
TETRAHYDROFURAN 109-99-9 ug/m3 69500 292000 5.51 4.04 11.7 5.82
TOLUENE 108-88-3 ug/m3 174000 NE 2.71 2.07 15 2.73
1,2,4-TRICHLOROBENZENE 120-82-1 ug/m3 69.5 292 <9.33 <9.33 <9.33 <9.33
1,1,1-TRICHLOROETHANE 71-55-6
µg/m3 174000 730000 6.59 <2.18 <2.18 3.55
1,1,2-TRICHLOROETHANE 79-00-5 µg/m3 5.85 25.6 <2.18 <2.18 <2.18 <2.18
TRICHLOROETHENE 79-01-6
µg/m3 15.9 99.7 498 17.1 3050 1070
1,2,4-TRIMETHYLBENZENE 95-63-6
µg/m3 2090 8760 6.83 5.43 59.6 6.62
1,3,5-TRIMETHYLBENZENE 108-67-8
µg/m3 2090 8760 2.57 <1.96 21.4 2.35
2,2,4-TRIMETHYLPENTANE 540-84-1 µg/m3 NE NE <1.87 <1.87 <1.87 <1.87
VINYL CHLORIDE 75-01-4
µg/m3 5.59 92.9 <1.02 <1.02 <1.02 <1.02
VINYL BROMIDE 593-60-2
µg/m3 6.24 27.3 <1.75 <1.75 <1.75 <1.75
VINYL ACETATE 108-05-4
µg/m3 6950 29200 <1.41 <1.41 <1.41 <1.41
M&P-XYLENE 106-42-3 µg/m
3 6960 NE 8.83 6.84 96.3 7.68
O-XYLENE 95-47-6
µg/m3 3480 14600 3.3 2.58 27.9 2.9
1,1-DIFLUOROETHANE 75-37-6
µg/m3 1390000 5840000 <1.08 <1.08 2.44 2.12
Bold values were reported above laboratory reporting limit. Italicized values indicate reporting limits above the Screening Levels.
CAS: Chemical Abstracts Service. µg/m3: micrograms per cubic meter. < : Not reported at or above the indicated analytical reporting limit.
Q: Qualifiers
E: The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration.
Table 4E - Volatile Organic Compounds in Soil Vapor
Schovaers Electronics 22 South Jeremy Street, Salt Lake City, Utah
Terracon Project No. 61247165
L995391-02L995391-03 L995391-04
¹ Environmental Protection Agency Target Sub-Slab and Near-source Soil Gas Concentration (TSSNSGC) Residential Vapor Intrusion
Screening Level (VISL) (November 2024; Target Hazard Quotient=1, Target Risk=10-6).
² Environmental Protection Agency Target Sub-Slab and Near-source Soil Gas Concentration (TSSNSGC) Commercial/Industrial Vapor
Intrusion Screening Level (VISL) (November 2024; Target Hazard Quotient=1, Target Risk=10-6).
SE-VP-4
05/18/2018
Lab Sample ID
Client Sample ID
Date Collected
SE-VP-3SE-VP-1 SE-VP-2
05/18/201805/18/2018 05/18/2018
L995391-01
Page 1 of 1

APPENDIX D: TERRACON SOPS
1

STANDARD OPERATING PROCEDURES
E.2140
INDOOR AIR SAMPLING

OBJECTIVE AND APPLICATION
This SOP describes the equipment and techniques for collection of time-integrated air samples
in depressurized sampling canisters.

The purpose of this SOP is to provide general guidance and recommended standard practices for
collecting indoor air samples. Many states have vapor encroachment, vapor intrusion and/or
soil vapor sampling guidance documents with specific requirements or recommended
procedures for soil vapor sampling. State specific requirements and guidance supersede this
guidance document and Terracon personnel should adhere to the most current state-specific
guidance when conducting soil vapor investigations. If state-specific requirements are less
stringent than the procedures described below, it is recommended that the procedures in this
guidance be used.

EQUIPMENT
 Level D PPE
 As appropriate - new inert sample tubing [¼ inch outside diameter (OD)] to
connect to sampling canister: Teflon, Teflon-lined, Nylaflow or similar. The use
of polyethylene tubing commonly used for groundwater sampling or vinyl tubing
is discouraged. Tubing can be used to collect indoor air samples in the event the
canister cannot be placed in the breathing zone or the sampling location is not
easily accessible such as a sump or crawlspace.
 Laboratory-provided vacuum sampling canister with vacuum gauge and flow
regulator set to desired sampling time (e.g., 24 hours, 8 hours)
 ¼ inch Swagelock nut
 ¼ inch Ferrule
 ¼ inch Spacer nut
 Moisture filter
 6-inch section of ¼-inch OD Teflon tubing
 9/16-inch wrench
 Photoionization detector (PID) with appropriate lamp
 Field Notebook
 Chain of Custody

PROCEDURE
1. Don appropriate PPE.

2. Conduct building assessment to identify condition of floors, openings or
cracks in floor, presence of basement or crawlspace, type and status of
heating, cooling and ventilation systems and potential internal sources of
2

contamination such as household cleaners or hazardous materials, recently
picked up dry cleaning, etc. Determine if occupants smoke or engage in
hobbies that would use paints, solvents and/or other contaminants. If
possible occupants should remove and/or refrain from using potential VOC
containing products/sources at least 48 hours prior to and during sampling,
if possible. Note weather conditions at time of sampling.

3. Set up sampling canister or tubing in the breathing zone (i.e., 3 to 6 feet
from floor). Samples are typically collected from lowest livable area in the
center of the room, away from doors and windows.

4. Attach a moisture filter to the sampling canister using laboratory
instructions, which generally involves removal of the brass cap from the top
of the canister. Connect about 6 inches of ¼-inch Teflon or similar tubing to
top of sampling canister. Place ferrule on ¼-inch Teflon tubing, followed by
spacer nut and Swagelock nut. Hand-tighten nut to top of canister and then
lightly tighten using a 9/16-inch wrench. Do not overtighten. Connect
moisture filter to end of Teflon tubing and connect additional tubing, as
appropriate.

5. To begin sampling, open valve on sampling canister and record canister
vacuum. Initial vacuum reading should be approximately 30 inches of
mercury of vacuum. If canister is not under full vacuum, do not use canister
for sample collection. Record time sample collection began.

6. Close sampling canister valve after the designated sampling time has
passed. Record the time sampling was completed and the final vacuum
reading on the canister.

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SOPs\SOP #50 Bulk Asbestos Sample Collection.doc Page 1 of 2
Standard Operating Procedures
No. 2005

Title: Asbestos Bulk Sample Collection

Application: Guidelines for proper handling and collection of bulk ACM samples for
laboratory analysis

Equipment: Sample bags (zip lock or whirlpak)
Utility knife
Disposable gloves
Computer (if appropriate)
Material Inventory Forms
Sample Analysis and Chain of Custody Forms
Inspection Report Form
Sample Location Drawing

Procedure:
1. Prior to heading out into the field, the field technician will verify all
appropriate equipment and forms are collected. A decision will be
made, along with the project manager, whether or not Liesch’s
computer program will be used or if it makes sense to use just the
computer forms.

2. Use appropriate PPE and use new disposable gloves when handling
each sample.

3. Bulk asbestos samples will be collected in accordance with Asbestos
Hazard Emergency Response Act (AHERA) regulations. Samples will
be itemized room by room using Liesch’s Material Inventory Forms.
Information recorded on the forms for e ach sample will include
quantity, materials condition

4. Samples will be packaged in a sealable (zip -lock or whirlpak) plastic
bag and labeled corresponding to the entry on the Material Inventory
Form. The Chain-of -Custody form will be filled out and inclu ded with
the package of samples delivered to the lab. A copy of the COC will
be maintained after delivery of the samples to the lab.

5. Upon completion of the building inspection, complete an Asbesto s
Building Inspection Report for each comprehensive AHERA style
inspection. Separate logs are to be completed for each different
project . This form documents inspection dates, inspectors, location of
survey, hours worked, square feet surveyed, problems encountered
during the survey and inaccessible locations.

6. Upon completion of the building inspection, a drawing depicting
floors, areas, rooms, room numbers and sample locations will be
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SOPs\SOP #50 Bulk Asbestos Sample Collection.doc Page 2 of 2
prepared. Sample labels and locations shall correspond to those
included in the Material Inventory Form.