DSHW-2024-007740

Deq submit <[e-mail]>
Salt Lake City facility - DRAFT 2023 Annual Groundwater Monitoring report
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Kehs, John P [US] (CO) <[e-mail]>Thu, Aug 8, 2024 at 11:23 AM
To: "[e-mail]" <[e-mail]>
Cc: "[e-mail]" <[e-mail]>, Andrew Riemer <[e-mail]>
Hello, please find aached the 2023 Annual Groundwater Monitoring Report for the Northrop Grumman facility
located at 2211 West North Temple, Salt Lake City, Utah.

Thanks,

JOHN KEHS | Project Manager
Remediation Program
Northrop Grumman | Corporate Office
O: 410-765-9143 | C: 410-227-0850 | [e-mail]

2024-0807_Salt_Lake_City_2023_annual_gw_report.pdf
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8/9/24, 3:51 PM State of Utah Mail - Salt Lake City facility - DRAFT 2023 Annual Groundwater Monitoring report
https://mail.google.com/mail/b/AEoRXRQqZIKQ6NQvDl3XBe3pTFWUnfVmr4ux7H4QcCpv325qF0J0/u/0/?ik=adf9d5e615&view=pt&search=all&permt…1/1

Results of 2023 Annual Groundwater
Monitoring
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah

August 7, 2024

Prepared for:

Northrop Grumman Systems Corporation
Post Office Box 1693
Baltimore, Maryland 21203

Prepared by:

Stantec Consulting Services, Inc
1165 Scheuring Road
De Pere, Wisconsin 54115

RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING

This document entitled Results of 2023 Annual Groundwater Monitoring was prepared by Stantec
Consulting Services Inc. (“Stantec”) for the account of Northrop Grumman Systems Corporation (the
“Client”). Any reliance on this document by any third party is strictly prohibited. The material in it
reflects Stantec’s professional judgment of the scope, schedule and other limitations stated in the
document and in the contract between Stantec and the Client. The opinions in the document are
based on conditions and information existing at the time the document was published and do not
consider any subsequent changes. In preparing the document, Stantec did not verify information
supplied to it by others. Any use which a third party makes of this document is the responsibility of
such third party. Such third party agrees that Stantec shall not be responsible for costs or damages
of any kind, if any, suffered by it or any other third party as a result of decisions made or actions taken
based on this document.

Prepared by
(signature)
Andrew Riemer

Approved by
(signature)
Chris Maxwell, P.G.

RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING

Table of Contents
EXECUTIVE SUMMARY ............................................................................................................... I
1.0 INTRODUCTION AND BACKGROUND ........................................................................... 1
1.1 SITE LOCATION ............................................................................................................... 1
1.2 HISTORICAL SITE INVESTIGATIONS ............................................................................ 1
1.3 SUBSURFACE GEOLOGY AND HYDROLOGY .............................................................. 1
2.0 MONITORING WELL GAUGING AND SAMPLING ......................................................... 3
2.1 GROUNDWATER LEVEL GAUGING ............................................................................... 3
2.2 GROUNDWATER PURGING, SAMPLING, AND ANALYSIS ........................................... 3
2.3 QUALITY ASSURANCE AND QUALITY CONTROL ........................................................ 4
3.0 DATA PRESENTATION ................................................................................................... 5
3.1 LABORATORY ANALYTICAL RESULTS ......................................................................... 5
3.2 DATA USABILITY ASSESSMENT .................................................................................... 5
3.2.1 Data Review .................................................................................................... 5
3.2.2 Sample Handling Procedures .......................................................................... 5
3.2.3 Groundwater Laboratory Analytical Procedures .............................................. 5
3.2.4 Data Reconciliation .......................................................................................... 6
4.0 SUMMARY AND RECOMMENDATIONS ........................................................................ 7
5.0 REFERENCES .................................................................................................................. 8
LIST OF TABLES
Table 1 Monitoring Well Construction Details
Table 2 Monitoring Well Groundwater Elevations
Table 3 Monitoring Well Analytical Results for VOCs in Groundwater
Table 4 Analytical Results for Nickel in Groundwater

LIST OF FIGURES
Figure 1 Site Location Map
Figure 2 Historic Site Layout and Sample Locations
Figure 3 Well Locations

LIST OF APPENDICES
Appendix A 2023 Annual Groundwater Sampling Field Data Sheets
Appendix B Laboratory Analytical Data Report
RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING
i

Executive Summary
This report presents the results of the 2023 annual groundwater sampling event conducted by
Stantec Consulting Services, Inc (Stantec) at the Northrop Grumman Systems Corporation
(Northrop Grumman) facility located at 2211 West North Temple in Salt Lake City, Utah (the Site).
Sampling was performed consistent with the requirements of the February 1993 Stipulation and
Consent Agreement (Agreement) entered between Litton Systems, Inc. (Litton) and the Utah
Department of Environmental Quality (UDEQ). The Site location is shown on Figure 1. A Site
layout plan is shown on Figure 2.
On May 9, 2017, UDEQ provided written approval of the Final Human Health Risk Assessment
(Stantec, 2017) for the Site. The groundwater constituents of concern are select volatile organic
compounds (VOCs) and dissolved nickel. The constituents of concern in groundwater are not
currently migrating from the Site above drinking water standards (DWSs). Consistent with the
approved risk assessment, the remedial approach for groundwater is long-term monitoring and
institutional controls.
Northrop Grumman submitted a recommended annual groundwater monitoring program in April
2022, indicating that wells not utilized in the monitoring program would be decommissioned.
UDEQ provided written approval of this approach in a July 2022 letter correspondence. A
fieldwork notification summarizing the schedule and list of wells to be decommissioned as part of
the updated program was submitted to UDEQ in February 2023. Site monitoring wells not
included in the current annual groundwater monitoring program were properly abandoned in
March 2023 following guidance in UDEQ Division of Solid and Hazardous Waste Management –
2014-017974 Attachment VI-2: Permanent Abandonment of Monitoring Wells. A technical memo
detailing the well decommissioning efforts will be submitted to UDEQ as a separate document. A
Site Management Plan (SMP) was submitted to UDEQ in October 2023 which includes a current
annual groundwater monitoring program. The SMP is currently under UDEQ review.
The monitoring completed for the 2023 annual event is consistent with the Agreement and the
updated program, and analytical results are generally consistent with previous sampling events.
VOC and dissolved nickel impacted groundwater present beneath the Site building is not
migrating from the Site. The groundwater impacts are generally limited to the Site Building
footprint.

RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING
August 7, 2024
1 | Page

1.0 INTRODUCTION AND BACKGROUND
1.1 SITE LOCATION
The facility is located at 2211 West North Temple in Salt Lake City, Utah (the Site). The Site is
bounded by North Temple to the north and south, 2200 W to the east, and 2400 W to the west.
The Site location is shown on Figure 1.
1.2 HISTORICAL SITE INVESTIGATIONS
The property was vacant open space prior to purchase by Litton Systems, Inc. (Litton) in the early
1950’s. Litton was purchased by Northrop Grumman in 2001. The property was subsequently
renamed as the Northrop Grumman Guidance and Electronics Company, Inc. in 2007 which has
been subsequently renamed as Northrop Grumman Systems Corporation. The footprint of the
original building constructed by Litton in the early 1950’s is shown on Figure 2. There have been
three significant additions to the Site building since original building construction, including recent
expansions in 2009 and 2010.
Volatile organic compounds (VOCs) are present in soil and groundwater beneath the Site building
extending to depths of approximately 50 to 60 feet below ground surface (bgs). Dissolved nickel
is present in shallow groundwater in one area beneath the Site building (former Flex Lab). The
area of groundwater affected by VOCs and dissolved nickel does not extend off-Site in the
downgradient direction. No impacts are present in the regional confined aquifer.
1.3 SUBSURFACE GEOLOGY AND HYDROLOGY
The Results of 2006 Annual Groundwater Monitoring and Additional Subsurface Investigations
(SECOR, December 2007) provides discussion regarding the Site geology and hydrology.
The information was based primarily on cone penetrometer (CPT) soundings advanced during
the 2006 and 2007 investigations, which extended to depths of approximately 120 feet bgs at the
Site (i.e., to the underlying regional aquifer). The 2008 and 2009 investigations presented in the
Results of 2008 Annual Groundwater Sampling and 2008/2009 Supplemental Remedial
Investigations (Stantec, January 2010) included continuous core boreholes at similar locations as
several of the CPT soundings using sonic drilling methods for the purpose of installing monitoring
wells. The findings of the continuous core boreholes were like data reported in the CPT
soundings. The geologic and hydrologic information summarized below is consistent with the
December 2007 and January 2010 reports.
• The upper 50 feet of sediment beneath the Site consists primarily of silt and sandy silt,
with some clay and fine sand. These sediments generally represent the regional upper
unconfined aquifer and include the Shallow Zone and A Zone as referenced in this report.
Depth to groundwater at the Site in the unconfined aquifer typically ranges from 3 to 5 feet
bgs, based on data collected from existing monitoring wells MW-1 to MW-11.
Groundwater flow direction at the Site in the unconfined aquifer is generally to the north
and northwest.
• Fine-grained soil underlies the Shallow and A Zones, consisting mostly of clay and silt, but
also including interbeds of sandy silt, silty sand, and fine sand. These materials are
referred to in this report as the B Zone, and reportedly vary in thickness regionally. Site
data indicate the B Zone locally extends to a depth of approximately 100 feet bgs.
RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING
August 7, 2024
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Groundwater flow direction as measured in monitoring wells installed in the sandy
sediments of the B Zone is historically to the north and northwest.
• The regional confined aquifer underlies the B Zone, and consists of sand, gravelly sand,
and sandy gravel. The regional aquifer is referred to in historic reports as the C Zone.
Regionally and locally (i.e., in monitoring wells at the Site), groundwater in the confined
aquifer exhibits artesian conditions (i.e., groundwater will naturally flow to the surface from
a well that penetrates the aquifer). Groundwater flow direction at the Site in the confined
aquifer is to the northwest.
RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING
August 7, 2024
3 | Page

2.0 MONITORING WELL GAUGING AND SAMPLING
The current annual groundwater sampling program, as approved by the UDEQ in the Agreement,
consists of annual sampling from monitoring wells MW-4 and MW-5. Due to surface damage,
monitoring well MW-5 was decommissioned in March 2023 and replaced with well MW-5R
(installed within five feet of former monitoring well MW-5). Groundwater samples were collected
from monitoring wells MW-2, MW-4, and MW-5R for the 2023 annual event; the addition of MW-
2 is consistent with the updated program approved by UDEQ (Stantec, April 2022). Well locations
are illustrated on Figure 3. The following sections detail the 2023 annual groundwater purging
and sampling activities.
2.1 GROUNDWATER LEVEL GAUGING
Prior to purging and sampling, depth to groundwater and total well depth were measured from the
top of well casing for MW-2, MW-4, and MW-5R using a water level indicator graduated to 0.01-
foot. Depth to groundwater measurements and surveyed wellhead top-of-casing elevations were
used to calculate groundwater surface elevations for each well. Depth to groundwater and total
well depth measurements for the 2023 monitoring event are provided in the field data sheets in
Appendix A. Table 1 lists monitoring well construction details; Table 2 presents groundwater
elevation data for the Site.
2.2 GROUNDWATER PURGING, SAMPLING, AND ANALYSIS
Prior to 2005, annual groundwater sampling at the Site was conducted by purging three well
volumes prior to sample collection. Technical guidance documents published by UDEQ and
others suggest that low-flow sampling is the preferred method to provide representative
groundwater quality data for VOCs. Low-flow purge and sampling has been used for all sampling
events at the Site, beginning with the 2005 annual sampling event. The methods are detailed in
the Results of 2005 Annual Groundwater Sampling and Additional Subsurface Investigations
(SECOR, 2006), and summarized herein.
Low-flow sampling was completed using ¼-inch inside diameter tubing and a peristaltic pump set
at the minimum pump speed to maintain water flow. A YSI water parameter meter with flow-
through cell was used for field measurements of dissolved oxygen, oxidation-reduction potential,
pH, specific conductance, and temperature. Groundwater sampling was completed once field
parameters measured by the YSI had stabilized to within approximately ten percent (10%) for
three consecutive measurements. Groundwater stabilization is provided on field data sheets
(Appendix B).
Approximately 3.5 to 5.5 gallons of groundwater was purged from each well using the low-flow
sampling method. Purged groundwater was containerized for characterization and disposal by
Northrop Grumman.
For VOC analysis, a minimum of three 40-milliliter (mL) glass vials were filled with groundwater
from the wells and capped with a Teflon®-lined cap. Groundwater samples were collected in vials
containing hydrochloric acid preservative and were filled to eliminate headspace and bubbles
prior to sealing the caps.
For dissolved nickel analysis, a 250-mL polytetrafluoroethylene (PTFE) container was filled with
groundwater from monitoring wells MW-4 and MW-5R and capped with a Teflon®-lined cap.
Groundwater samples were field filtered using an in-line 0.45-micron cartridge filter attached to
RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING
August 7, 2024
4 | Page

the peristaltic pump and tubing set. The groundwater samples were collected in bottles containing
nitric acid and were filled to eliminate headspace prior to sealing the caps.
Groundwater samples collected for VOCs and dissolved nickel were placed in an ice-filled,
insulated cooler and delivered with a trip blank and temperature blank under chain-of-custody
(COC) protocol to the Eurofins Environment Testing (Eurofins) laboratory in Arvada, Colorado (a
Utah-certified laboratory). Groundwater samples were analyzed by Eurofins for VOCs by United
States Environmental Protection Agency (US EPA) Method 8260B and dissolved nickel by US
EPA Method 6020A. VOC analytical data is summarized on Table 3; dissolved nickel analytical
data is summarized on Table 4.
2.3 QUALITY ASSURANCE AND QUALITY CONTROL
Analytical data were evaluated for accuracy and precision based on field and laboratory quality
assurance/quality control (QA/QC) performance. A blind duplicate sample was collected from
monitoring well MW-2 and analyzed for VOCs. Both the primary and duplicate sample results are
presented in Table 3. These data indicate appropriate analytical accuracy and precision for the
sampling event.
The laboratory QA/QC includes checking adherence to holding times. Holding times are
established by the US EPA and refer to the maximum allowable time to pass between sample
collection and analysis by the laboratory. All analyses were performed within the holding times
specified by the US EPA.
The analytical program included laboratory control spikes and method blanks. The results were
within the prescribed range of acceptable limits for analytical accuracy. The laboratory analytical
data report is included in Appendix B.

RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING
August 7, 2024
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3.0 DATA PRESENTATION
The following presents the results of the 2023 annual monitoring event.
3.1 LABORATORY ANALYTICAL RESULTS
MW-4 and MW-5R are located down gradient of the Site Building near the property boundary and
are included in the required annual monitoring program specified in the Agreement.
Concentrations of 1,1-dichloroethane (DCA) and 1,1,2-trichloro-1,2,2-trifluoroethane (Freon 113)
were detected in the groundwater sample from MW-4 at concentrations below federal drinking
water standards (DWS). Concentrations of benzene, chloroform, 1,1-DCA, Freon 113, and vinyl
chloride were detected in the groundwater sample from MW-5R at concentrations below federal
DWS; 1,1-dichloroethene (DCE) was detected at a concentration slightly above the respective
federal DWS. Dissolved nickel was detected at both wells. These VOC and dissolved nickel
results are consistent with historic sampling events.
The groundwater sample collected from up-gradient well MW-2 contained 1,1-DCE and TCE at
concentrations above federal DWS. These concentrations are consistent with historic analytical
results dating back to 2005. 1,1-DCA, 1,2-DCA, cis-1,2-DCE, and vinyl chloride were reported at
concentrations below federal DWS. VOCs detected at MW-2 are attributed to an historic up-
gradient off-Site source. Laboratory analytical data for groundwater samples collected since 2005
are presented on Tables 3 and 4.
3.2 DATA USABILITY ASSESSMENT
Assessment of data usability is the overall process of evaluating the degree of confidence with
which data may be used and relied upon.
3.2.1 Data Review
Following receipt of the final laboratory reports, laboratory data were subjected to an internal data
review process. No corrective actions were noted in the final laboratory reports.
3.2.2 Sample Handling Procedures
Review of field notes, chain-of-custody documentation, and laboratory sample acceptance forms
indicates that all samples were collected at ambient temperature, placed on ice, and received by
the laboratory within the following US EPA-established hold times:
• A 14-day hold-time for VOC analysis under US EPA Method 8260B; and
• A 48-hour hold-time for dissolved nickel analysis under US EPA Method 6020B.
3.2.3 Groundwater Laboratory Analytical Procedures
Review of final laboratory reports for the 2023 sampling event indicates that there were no
laboratory modifications to US EPA Methods. The laboratory conformed to method requirements
for continuing instrument calibration, spike, and surrogate analysis and reporting of relative
percent difference (RPD). There were no detections of target compounds reported in the
laboratory method blanks during the analysis which would indicate instrument carryover between
sample runs. The following data qualifier was noted by the laboratory:
• A ‘J’ qualifier was used in the laboratory report to indicate reported results for multiple
detected analytes at MW-2, MW-4, and MW-5R were less than the reporting limit (RL), but
RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING
August 7, 2024
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greater than or equal to the method detection limit (MDL). The concentrations were
reported as approximate values.
3.2.4 Data Reconciliation
A description of corrective measures performed by the laboratory are provided in the laboratory
analytical data report, included as Attachment B. The results remain consistent with historic data.
Stantec concludes that the data presented in this report are acceptable for their intended use in
reporting the concentrations of VOCs and dissolved nickel in groundwater.
RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING
August 7, 2024
7 | Page

4.0 SUMMARY AND RECOMMENDATIONS
Data collected during the remedial investigations implemented since 2005 indicate multiple areas
of the Site Building where releases of VOCs have occurred. In addition to the Former Clarifier
and Solvent Piping Area, these locations include the Freon Storage and Underground Piping Area
and the Northern Interior Portion of the Site Building. Dissolved nickel is present in shallow
groundwater beneath the Site building in one isolated area (former Flex Lab). The fine-grained
nature of the Site soil, particularly the B Zone sediments, has limited vertical and lateral migration
of impacts. The vertical extent of VOCs is limited to the upper 70 feet of sediment, with most
VOCs limited to the uppermost 50 to 60 feet.
The data collected during the 2023 annual groundwater monitoring event are consistent with the
Site Conceptual Model presented in the Results of 2008 Groundwater Sampling and
Supplemental Investigations (Stantec, 2009) and further refined in the Results of 2008 Annual
Groundwater Sampling and 2008/2009 Supplemental Remedial Investigations (Stantec, January
2010).
The upward hydraulic gradient at the Site further limits the potential for further vertical migration.
There is no current impact or likely future impact to C Zone groundwater, which is the regional
confined aquifer. The lateral extent of soil and groundwater affected by VOCs, primarily Freon
113, is limited to the footprint of the Site Building. No VOCs or dissolved nickel in groundwater
are migrating from the Site above federal DWS.
Analytical results from the 2023 groundwater sampling event are consistent with previous
sampling events and continue to support these conclusions. Based on this data, Stantec
recommends that one additional annual groundwater sampling event be performed in the fourth
calendar quarter of 2024. If the results from this event remain consistent with previous events,
Northrop Grumman intends to recommend no further groundwater monitoring be conducted as
part of the long-term site management plan.

RESULTS OF 2023 ANNUAL GROUNDWATER MONITORING
August 7, 2024
8 | Page

5.0 REFERENCES
SECOR, 2006, Results of 2005 Annual Groundwater Sampling and Additional Subsurface
Investigations.
SECOR, September 2006, Work Plan to Conduct Supplemental Remedial Investigations.
SECOR, December 2007, Results of 2006 Annual Groundwater Monitoring and Additional
Subsurface Investigations.
SECOR, 2008, Results of 2007 Annual Groundwater Sampling.
SECOR, October 2008, Work Plan for Installation of Additional Soil Borings and Monitoring Wells.
Stantec Consulting Services Inc, 2009, Results of 2008 Groundwater Sampling and Supplemental
Investigations.
Stantec Consulting Services Inc, January 2010, Results of 2008 Annual Groundwater Sampling
and 2008/2009 Supplemental Remedial Investigations.
Stantec Consulting Services Inc, January 2013, Sub-Slab Soil Vapor Sampling Report, Northrop
Grumman Guidance and Electronics Company, Inc., 2211 West North Temple, Salt Lake City.
Stantec Consulting Services Inc, April 2013, Indoor Air Sampling and Analysis Plan, Northrop
Grumman Guidance and Electronics Company, Inc. 2211 West North Temple, Salt Lake City.
Stantec Consulting Services Inc, January 2014, Indoor/Outdoor Air and Sub-Slab Soil Gas
Sampling Report, Northrop Grumman Guidance and Electronics Company, Inc., 2211 West North
Temple, Salt Lake City.
Stantec Consulting Services Inc, March 2015, Draft Preliminary Risk Assessment Report,
Northrop Grumman Systems Corporation, 2211 West North Temple, Salt Lake City.
Stantec Consulting Services Inc, February 2016a, Technical Memo: Results of Total and
Dissolved Metals Analysis for Groundwater Samples Collected from Existing Site Monitoring
Wells, Northrop Grumman Systems Corporation, 2211 West North Temple, Salt Lake City.
Stantec Consulting Services Inc, February 2016b, Technical Memo: Results of Shallow Soil and
Groundwater Assessment in the Immediate Vicinity of a Former Acid Neutralization Unit, Northrop
Grumman Systems Corporation, 2211 West North Temple, Salt Lake City.
Stantec Consulting Services Inc, March 2017, Final Human Health Risk Assessment, Northrop
Grumman Systems Corporation, 2211 West North Temple, Salt Lake City.
Stantec Consulting Services Inc, April 2022, Recommended Groundwater and Indoor Air
Monitoring Program Under the Site Management Plan – Northrop Grumman Systems
Corporation, 2211 West North Temple, Salt Lake City, Utah.
Stantec Consulting Services Inc, February 2023, Fieldwork Notice – Monitoring Well and Soil
Vapor Monitoring Point Decommissioning – Northrop Grumman Systems Corporation, 2211 West
North Temple, Salt Lake City, Utah.
Stantec Consulting Services Inc, October 2023, Recommended Groundwater and Indoor Air
Monitoring Programs under the Site Management Plan, Northrop Grumman Systems
Corporation, 2211 West North Temple, Salt Lake City, Utah.
Tables
TABLE 1
Monitoring Well Construction Details
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Boring Well Screen Screen Screen TOC
Depth Diameter Top Bottom Length Elevation
(feet bgs)(inches)(feet bgs)(feet bgs)(feet)(feet AMSL)
MW-1 4/29/1993 3/22/2023 14 2 3 13 10 4221.56 NM NM
MW-2 4/29/1993 -13.5 2 3.5 13.5 10 4224.71 7449838.109 1514706.523
MW-3 4/29/1993 3/21/2023 13.5 2 3.5 13.5 10 4220.94 NM NM
MW-4 5/3/1993 -14.5 2 3.5 13.5 10 4224.01 7450004.636 1514261.989
MW-5 5/3/1993 3/23/2023 15.5 2 3.5 14.5 11 4221.31 NM NM
MW-5R 4/26/2023 -15 2 3.5 13.5 10 4224.13 7449999.528 1514122.418
MW-6 5/4/1993 3/21/2023 40 2 29.5 39.5 10 4221.24 NM NM
MW-7 8/17/2005 -16 1 5 15 10 NM NM NM
MW-8 8/18/2005 3/24/2023 16 1 5 15 10 NM NM NM
MW-9 8/19/2005 -16 1 5 15 10 NM NM NM
MW-10 8/19/2005 3/24/2023 12 1 2 12 10 NM NM NM
MW-11 10/3/2005 -12 1 2 12 10 NM NM NM
MW-12A 12/12/2008 3/22/2023 2 30 40 10 4224.35 7449872.159 1513998.033
MW-12B 12/12/2008 3/22/2023 2 53 63 10 4224.49 7449872.337 1513998.148
MW-13A 11/7/2008 3/21/2023 2 30 40 10 4223.83 7449997.559 1514268.345
MW-13B 11/7/2008 3/21/2023 2 65 70 5 4223.81 7449997.576 1514268.596
MW-13C 11/7/2008 3/22/2023 117 4 105 115 10 4224.08 7449997.900 1514256.747
MW-14A 11/6/2008 3/21/2023 2 34 44 10 4224.51 7449994.848 1514573.833
MW-14B 11/6/2008 3/21/2023 2 63 68 5 4224.47 7449994.764 1514574.027
MW-14C 11/5/2008 3/22/2023 127 4 120 125 5 4224.54 7449994.836 1514565.231
MW-15C 11/8/2008 3/22/2023 116 4 100 110 10 4223.45 7449550.867 1514318.167
Notes:
bgs = below ground surface
TOC = Top of Casing
AMSL = above mean sea level
NM = not measured
77
72
Well/
Boring ID
Installation
Date Northing Easting
63
Decommissioning
Date
Page 1 of 1
TABLE 2
Monitoring Well Groundwater Elevations
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
10/6/1993 NM NM
2/8/1994 5.63 4215.93
11/16/1995 4.95 4216.61
5/24/1996 4.38 4217.18
11/26/1996 4.35 4217.21
5/30/1997 3.69 4217.87
5/4/1998 4.25 4217.31
11/30/1998 5.28 4216.28
11/2/1999 5.38 4216.18
11/1/2000 4.24 4217.32
11/1/2001 4.37 4217.19
11/1/2002 5.45 4216.11
10/16/2003 5.27 4216.29
11/4/2004 4.37 4217.19
10/24/2005 4.92 4216.64
10/31/2006 5.08 4216.48
11/7/2007 4.99 4216.57
12/12/2008 NM NM
7/15/2009 4.50 4217.06
11/17/2009 5.55 4216.01
10/25/2010 4.87 4216.69
12/12/2011 5.75 4215.81
10/29/2012 5.33 4216.23
11/19/2013 3.46 4218.10
5/23/2014 5.18 4216.38
11/19/2014 5.96 4215.60
8/27/2015 5.03 4216.53
10/12/2015 5.41 4216.15
10/16/2015 5.54 4216.02
11/3/2016 5.74 4215.82
11/15/2017 5.88 4215.68
12/7/2018 5.40 4216.16
12/16/2019 4.78 4216.78
12/15/2020 5.98 4215.58
Notes:
AMSL = above mean sea level
NM = not measured
bgs = below ground surface
Groundwater
Elevation
(feet AMSL)
Well No.Date
Depth to
Groundwater
(feet bgs)
MW-1
Page of 1 of 10
TABLE 2
Monitoring Well Groundwater Elevations
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Groundwater
Elevation
(feet AMSL)
Well No.Date
Depth to
Groundwater
(feet bgs)
10/6/1993 3.57 4218.55
2/8/1994 4.50 4217.62
11/16/1995 4.27 4217.85
5/24/1996 3.35 4218.77
11/26/1996 3.90 4218.22
5/30/1997 3.00 4219.12
5/4/1998 3.40 4218.72
11/30/1998 4.44 4217.68
11/2/1999 4.04 4218.08
11/1/2000 3.69 4218.43
11/1/2001 4.15 4217.97
11/1/2002 4.54 4217.58
10/16/2003 4.40 4217.72
11/4/2004 3.35 4218.77
10/19/2005 4.04 4218.08
10/31/2006 4.45 4217.67
11/7/2007 4.23 4217.89
12/12/2008 4.40 4217.72
7/15/2009 3.63 4218.49
11/16/2009 4.60 4217.52
10/25/2010 3.85 4218.27
12/12/2011 4.44 4217.68
10/29/2012 3.81 4218.31
11/19/2013 4.01 4218.11
5/23/2014 3.37 4218.75
11/19/2014 4.35 4217.77
8/27/2015 3.41 4218.71
5/12/2016 3.40 4218.72
11/3/2016 4.17 4217.95
11/15/2017 4.51 4217.61
12/7/2018 3.94 4218.18
12/16/2019 3.42 4218.70
12/15/2020 4.70 4217.42
1/12/2022 3.41 4218.71
12/6/2022 4.06 4218.06
11/9/2023 4.09 4220.62
Notes:
AMSL = above mean sea level
NM = not measured
bgs = below ground surface
MW-2
Page of 2 of 10
TABLE 2
Monitoring Well Groundwater Elevations
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Groundwater
Elevation
(feet AMSL)
Well No.Date
Depth to
Groundwater
(feet bgs)
10/6/1993 3.04 4217.90
2/8/1994 2.95 4217.99
11/16/1995 2.51 4218.43
5/24/1996 1.90 4219.04
11/26/1996 2.72 4218.22
5/30/1997 1.72 4219.22
5/4/1998 1.86 4219.08
11/30/1998 2.85 4218.09
11/2/1999 2.67 4218.27
11/1/2000 2.14 4218.80
11/1/2001 2.38 4218.56
11/1/2002 2.77 4218.17
10/16/2003 2.75 4218.19
11/4/2004 2.20 4218.74
10/24/2005 2.86 4218.08
10/31/2006 2.91 4218.03
11/7/2007 2.86 4218.08
12/12/2008 NM NM
7/15/2009 2.10 4218.84
11/16/2009 3.15 4217.79
10/25/2010 2.51 4218.43
12/12/2011 3.56 4217.38
10/29/2012 2.73 4218.21
11/19/2013 2.40 4218.54
5/23/2014 2.68 4218.26
11/19/2014 3.39 4217.55
8/27/2015 2.35 4218.59
5/12/2016 2.38 4218.56
11/3/2016 2.93 4218.01
11/15/2017 3.50 4217.44
12/7/2018 2.91 4218.03
12/16/2019 2.52 4218.42
12/15/2020 3.82 4217.12
12/6/2022 2.98 4217.96
Notes:
AMSL = above mean sea level
NM = not measured
bgs = below ground surface
MW-3
Page of 3 of 10
TABLE 2
Monitoring Well Groundwater Elevations
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Groundwater
Elevation
(feet AMSL)
Well No.Date
Depth to
Groundwater
(feet bgs)
10/6/1993 4.50 4217.00
2/8/1994 5.43 4216.07
11/16/1995 5.14 4216.36
5/24/1996 4.52 4216.98
11/26/1996 4.83 4216.67
5/30/1997 3.86 4217.64
5/4/1998 4.32 4217.18
11/30/1998 5.12 4216.38
11/2/1999 4.65 4216.85
11/1/2000 4.28 4217.22
11/1/2001 4.37 4217.13
11/1/2002 5.02 4216.48
10/16/2003 4.95 4216.55
11/4/2004 3.40 4218.10
10/20/2005 4.77 4216.73
10/30/2006 5.04 4216.46
11/7/2007 5.01 4216.49
12/9/2008 5.07 4216.43
7/15/2009 4.08 4217.42
11/17/2009 5.27 4216.23
10/25/2010 2.38 4219.12
12/14/2011 5.15 4216.35
10/29/2012 4.74 4216.76
11/19/2013 4.31 4217.19
5/23/2014 4.39 4217.11
11/19/2014 5.19 4216.31
8/27/2015 3.92 4217.58
10/12/2015 5.91 4215.59
10/16/2015 4.96 4216.54
11/3/2016 4.89 4216.61
11/16/2017 5.02 4216.48
12/10/2018 4.84 4216.66
12/16/2019 4.20 4217.30
12/16/2020 5.21 4216.29
1/14/2022 4.61 4216.89
12/6/2022 4.78 4216.72
11/9/2023 4.86 4219.15
Notes:
AMSL = above mean sea level
NM = not measured
bgs = below ground surface
MW-4
Page of 4 of 10
TABLE 2
Monitoring Well Groundwater Elevations
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Groundwater
Elevation
(feet AMSL)
Well No.Date
Depth to
Groundwater
(feet bgs)
10/6/1993 4.26 4217.05
2/8/1994 5.40 4215.91
11/16/1995 5.28 4216.03
5/24/1996 4.86 4216.45
11/26/1996 4.96 4216.35
5/30/1997 4.11 4217.20
5/4/1998 4.62 4216.69
11/30/1998 5.58 4215.73
11/2/1999 5.17 4216.14
11/1/2000 5.01 4216.30
11/1/2001 5.13 4216.18
11/1/2002 5.71 4215.60
10/16/2003 5.31 4216.00
11/4/2004 4.81 4216.50
10/20/2005 5.35 4215.96
10/31/2006 5.56 4215.75
11/7/2007 5.50 4215.81
12/9/2008 5.56 4215.75
7/15/2009 4.98 4216.33
11/16/2009 5.75 4215.56
10/25/2010 5.16 4216.15
12/12/2011 5.81 4215.50
10/29/2012 5.45 4215.86
11/19/2013 4.48 4216.83
5/23/2014 5.39 4215.92
11/19/2014 5.80 4215.51
8/27/2015 4.45 4216.86
5/12/2016 4.31 4217.00
11/3/2016 5.63 4215.68
11/16/2017 5.66 4215.65
12/10/2018 5.60 4215.71
12/16/2019 5.38 4215.93
12/16/2020 5.85 4215.46
1/14/2022 5.38 4215.93
12/6/2022 5.59 4215.72
11/9/2023 5.70 4218.43
Notes:
AMSL = above mean sea level
NM = not measured
bgs = below ground surface
MW-5
MW-5R
Page of 5 of 10
TABLE 2
Monitoring Well Groundwater Elevations
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Groundwater
Elevation
(feet AMSL)
Well No.Date
Depth to
Groundwater
(feet bgs)
10/6/1993 4.43 4216.81
2/8/1994 NM NM
11/16/1995 NM NM
5/24/1996 NM NM
11/26/1996 NM NM
5/30/1997 NM NM
5/4/1998 NM NM
11/30/1998 NM NM
11/2/1999 NM NM
11/1/2000 NM NM
11/1/2001 NM NM
11/1/2002 NM NM
10/16/2003 NM NM
11/4/2004 4.50 4216.74
10/20/2005 4.56 4216.68
10/31/2006 4.50 4216.74
11/7/2007 4.61 4216.63
12/9/2008 4.63 4216.61
7/15/2009 4.30 4216.94
11/17/2009 4.28 4216.96
10/25/2010 4.41 4216.83
12/12/2011 4.13 4217.11
10/29/2012 4.71 4216.53
11/19/2013 4.50 4216.74
11/19/2014 4.64 4216.60
8/27/2015 4.65 4216.59
5/12/2016 5.63 4215.61
11/3/2016 4.81 4216.43
11/15/2017 4.55 4216.69
12/7/2018 4.72 4216.52
12/16/2019 5.00 4216.24
12/15/2020 4.97 4216.27
12/6/2022 4.45 4216.79
Notes:
AMSL = above mean sea level
NM = not measured
bgs = below ground surface
MW-6
Page of 6 of 10
TABLE 2
Monitoring Well Groundwater Elevations
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Groundwater
Elevation
(feet AMSL)
Well No.Date
Depth to
Groundwater
(feet bgs)
3/19/2009 7.20 4217.15
7/16/2009 5.07 4219.28
11/17/2009 5.20 4219.15
10/25/2010 5.03 4219.32
12/12/2011 4.82 4219.53
10/29/2012 5.08 4219.27
11/19/2013 4.86 4219.49
11/19/2014 5.15 4219.20
8/27/2015 4.96 4219.39
10/12/2015 5.34 4219.01
10/16/2015 12.61 4211.74
5/12/2016 5.09 4219.26
11/3/2016 5.15 4219.20
12/7/2018 4.98 4219.37
12/16/2019 5.15 4219.20
12/15/2020 4.74 4219.61
3/19/2009 1.89 4222.60
7/16/2009 1.17 4223.32
11/17/2009 1.52 4222.97
10/25/2010 1.38 4223.11
12/12/2011 1.05 4223.44
10/29/2012 1.55 4222.94
11/19/2013 1.63 4222.86
11/19/2014 1.69 4222.80
8/27/2015 1.53 4222.96
5/12/2016 1.39 4223.10
11/3/2016 1.87 4222.62
11/15/2017 1.96 4222.53
12/10/2018 2.58 4221.91
12/16/2019 3.25 4221.24
12/15/2020 2.16 4222.33
1/14/2022 5.51 4218.98
Notes:
AMSL = above mean sea level
NM = not measured
bgs = below ground surface
MW-12A
MW-12B
Page of 7 of 10
TABLE 2
Monitoring Well Groundwater Elevations
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Groundwater
Elevation
(feet AMSL)
Well No.Date
Depth to
Groundwater
(feet bgs)
12/12/2008 4.69 4219.14
7/16/2009 4.55 4219.28
11/17/2009 4.81 4219.02
10/25/2010 4.58 4219.25
12/12/2011 4.52 4219.31
10/29/2012 4.82 4219.01
11/19/2013 4.64 4219.19
11/19/2014 4.82 4219.01
8/27/2015 5.54 4218.29
5/12/2016 6.27 4217.56
11/3/2016 7.28 4216.55
11/16/2017 5.19 4218.64
12/7/2018 4.90 4218.93
12/16/2019 5.45 4218.38
12/16/2020 4.95 4218.88
1/13/2022 8.12 4215.71
12/6/2022 5.70 4218.13
12/12/2008 0.78 4223.03
7/16/2009 0.34 4223.47
11/17/2009 0.57 4223.24
10/25/2010 0.35 4223.46
12/14/2011 -0.15 4223.96
10/29/2012 0.47 4223.34
11/19/2013 0.50 4223.31
11/19/2014 0.35 4223.46
8/27/2015 0.34 4223.47
5/12/2016 0.70 4223.11
11/3/2016 0.95 4222.86
11/16/2017 0.89 4222.92
12/7/2018 1.26 4222.55
12/16/2019 1.88 4221.93
12/16/2020 0.98 4222.83
1/13/2022 4.45 4219.36
12/6/2022 1.49 4222.32
Notes:
AMSL = above mean sea level
NM = not measured
bgs = below ground surface
MW-13A
MW-13B
Page of 8 of 10
TABLE 2
Monitoring Well Groundwater Elevations
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Groundwater
Elevation
(feet AMSL)
Well No.Date
Depth to
Groundwater
(feet bgs)
12/12/2008 -2.43 4226.60
11/17/2009 -3.07 4227.24
10/25/2010 -3.13 4227.30
12/12/2011
11/19/2013
5/23/2014 -3.09 4227.26
11/19/2014 -3.04 4227.21
8/31/2015 -2.82 4226.99
12/12/2008 3.87 4220.64
7/16/2009 4.00 4220.51
11/17/2009 3.97 4220.54
10/25/2010 4.01 4220.50
12/12/2011 3.55 4220.96
10/29/2012 3.91 4220.60
11/19/2013 3.64 4220.87
11/19/2014 4.05 4220.46
8/27/2015 3.73 4220.78
11/3/2016 5.72 4218.79
11/16/2017 3.93 4220.58
12/7/2018 5.13 4219.38
12/16/2019 4.43 4220.08
12/15/2020 4.10 4220.41
1/13/2022 5.10 4219.41
Notes:
AMSL = above mean sea level
NM = not measured
bgs = below ground surface
Paved over with new asphalt
Paved over with asphalt
MW-14A
MW-13C
Page of 9 of 10
TABLE 2
Monitoring Well Groundwater Elevations
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Groundwater
Elevation
(feet AMSL)
Well No.Date
Depth to
Groundwater
(feet bgs)
12/12/2008 2.21 4222.26
7/16/2009 0.38 4224.09
11/17/2009 0.69 4223.78
10/25/2010 0.54 4223.93
12/12/2011 0.01 4224.46
10/29/2012 0.65 4223.82
11/19/2013 0.51 4223.96
11/19/2014 0.62 4223.85
8/27/2015 0.52 4223.95
11/3/2016 0.71 4223.76
11/15/2017 1.91 4222.56
12/7/2018 1.86 4222.61
12/16/2019 1.65 4222.82
12/15/2020 0.96 4223.51
1/13/2022 4.61 4219.86
12/12/2008 -3.93 4228.76
11/17/2009 -3.96 4228.79
10/26/2010 -3.85 4228.68
12/12/2011 -4.95 4229.78
10/29/2012 -3.57 4228.40
11/19/2013 -3.62 4228.45
11/19/2014 -4.14 4228.97
8/31/2015 -4.03 4228.86
12/12/2008 -4.20 4227.65
11/17/2009 -5.06 4228.51
10/25/2010 -5.03 4228.48
12/12/2011 -6.14 4229.59
10/29/2012 -4.73 4228.18
11/19/2013 -4.88 4228.33
11/19/2014 -5.29 4228.74
8/31/2015 -5.32 4228.77
Notes:
AMSL = above mean sea level
NM = not measured
bgs = below ground surface
MW-14B
MW-14C
MW-15C
Page of 10 of 10
TABLE 3
Monitoring Well Analytical Results for VOCs in Groundwater
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Acetone Benzene
Bromo-
dichloro-
methane
Carbon
Disulfide
Chloro-
ethane
Chloro-
form
Dichloro-
difluoro-
methane
1,1-DCA 1,2-DCA 1,1-DCE cis-1,2-
DCE
1,4
Dioxane
Ethyl-
benzene MEK Methylene
Chloride PCE 1,1,1-
TCA
1,1,2-
TCA TCE Freon 113 Toluene Vinyl
Chloride
m&p-
Xylene
o-
Xylene
Xylenes,
Total
MW-1 10/24/2005 <2.93 <0.142 0.59 J <0.130 <0.317 6.5 NA 2.1 <0.108 0.23 J <0.187 NA <0.142 <2.44 <0.231 <0.201 <0.140 <0.238 <0.166 4.8 <0.163 <0.239 <0.246 <0.120 NR
10/19/2005 12 <0.142 <0.120 0.69 J <0.317 <0.185 NA 13 0.67 J 32 4.9 NA <0.142 <2.44 <0.231 7.8 0.035 J <0.238 3.6 16 <0.163 <0.239 <0.246 <0.120 NR
10/31/2006 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 45 <2.0 220 6.8 NA <2.0 <10 <2.0 10 <2.0 <2.0 12 6.6 <2.0 4.8 NR NR <2.0
11/7/2007 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 11 <2.0 31 9.7 NA <2.0 <10 <2.0 16 <2.0 <2.0 8.50 <2.0 <1.0 <1.0 NR NR <2.0
12/18/2008 <2.0 0.07 J <0.50 <0.50 <0.50 0.1 J <0.50 16 0.56 48 6.6 200 <0.50 <2.0 <0.50 18 0.5 J 0.4 J 7.1 15 0.04 J 0.93 NR NR 1.5
12/18/2008
(BDS-3 duplicate)<2.0 0.07 J <0.50 <0.50 <0.50 0.1 J <0.50 16 0.54 43 6.7 190 <0.50 <2.0 <0.50 18 0.52 <0.50 7.2 15 0.03 J 0.91 NR NR 1.2
11/16/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 20 <2.0 67 6.2 250 <2.0 <10 <2.0 12 <2.0 <2.0 7.4 9.1 <2.0 <1.0 NR NR <2.0
12/13/2011 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 16.8 <2.00 71.0 4.97 210 <2.00 <10.0 <2.00 12.3 <2.00 <2.00 6.29 6.94 <2.00 <1.00 NR NR <2.00
10/29/2012 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 41.1 <2.00 149 9.20 392 <2.00 <10.0 <2.00 2.73 <2.00 <2.00 5.11 <2.00 <2.00 <1.00 NR NR 8.47
11/20/2013 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 9.94 <2.00 44.4 3.53 125 <2.00 <10.0 <2.00 8.21 <2.00 <2.00 4.04 3.67 <2.00 <1.00 NR NR <2.00
11/19/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 13.1 <2.00 61.5 4.58 220 <2.00 <10.0 <2.00 7.75 <2.00 <2.00 5.23 <2.00 <2.00 <1.00 NR NR <2.00
8/27/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 28.0 <2.00 117 5.89 363 <2.00 <10.0 <2.00 10.4 <2.00 <2.00 7.19 <2.00 <2.00 <1.00 NR NR <2.00
11/3/2016 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 8.44 <2.00 34.0 4.88 NR <2.00 <10.0 <2.00 12.5 <2.00 <2.00 10.6 <2.00 <2.00 <1.00 NR NR <2.00
11/15/2017 NR <5.0 <5.0 NR <5.0 <5.0 <5.0 6.2 <5.0 25 3.9 J NR <5.0 NR <5.0 15 <5.0 <5.0 6.7 NR <5.0 <5.0 <5.0 <5.0 NR
11/15/2017 (Dup-1)NR <5.0 <5.0 NR <5.0 <5.0 <5.0 6.3 <5.0 24 3.1 J NR <5.0 NR <5.0 14 <5.0 <5.0 6.1 NR <5.0 <5.0 <5.0 <5.0 NR
12/7/2018 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 13.0 0.43 J 57 5.7 NR <0.10 NR <0.35 23 <0.19 <0.31 14 NR <0.25 0.91 J <0.18 <0.10 NR
12/7/2018 (Dup-01)NR <0.13 <0.14 NR <0.34 <0.12 <0.16 13.0 0.47 J 61 5.9 NR <0.10 NR <0.35 23 <0.19 <0.31 14 NR <0.25 0.98 J <0.18 <0.10 NR
12/16/2019 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 9.2 0.33 J 40 4.6 NR <0.10 NR <0.35 47 0.23 J <0.31 17 NR <0.25 0.58 J <0.18 <0.10 NR
12/16/2019 (Dup-01)NR <0.13 <0.14 NR <0.34 <0.12 <0.16 9.4 0.35 J 39 4.8 NR <0.10 NR <0.35 47 0.24 J <0.31 18 NR <0.25 0.58 J <0.18 <0.10 NR
12/15/2020 NR <2.5 <2.5 NR <5.0 1.8 J <5.0 4.9 <2.5 17 3.0 NR <2.5 NR <5.0 22 <2.5 <2.5 10 NR <2.5 <2.5 <2.5 <2.5 NR
12/15/2020 (DUP-01)NR <2.5 <2.5 NR <5.0 1.8 J <5.0 4.8 <2.5 19 3.1 NR <2.5 NR <5.0 23 <2.5 <2.5 10 NR <2.5 <2.5 <2.5 <2.5 NR
1/13/2022 NR <2.5 <2.5 NR <5.0 <5.0 <5.0 11.0 <2.5 50 4.3 NR <2.5 NR <5.0 9.7 <2.5 <2.5 12 NR <2.5 <2.5 <2.5 <2.5 NR
1/13/2022 (DUP-01)NR <2.5 <2.5 NR <5.0 <5.0 <5.0 12.0 <2.5 50 4.8 NR <2.5 NR <5.0 8.4 <2.5 <2.5 9.6 NR <2.5 <2.5 <2.5 <2.5 NR
12/6/2022 NR <5.0 <5.0 NR <10 <10 <10 18 <5.0 39 5.6 NR <5.0 NR <10 <5.0 <5.0 <5.0 1.9 J NR <5.0 <5.0 <5.0 <5.0 NR
11/9/2023 <6.6 <0.31 NR <0.63 <1.4 <0.36 <0.96 23 0.54 J 80 5.8 NR <0.30 <6.0 <0.94 0.92 J <0.39 <0.27 6.3 <0.73 <0.32 1.8 J <0.36 <0.33 <0.33
11/09/2023 (DUP-01)<6.6 <0.31 NR 1.5 J <1.4 <0.36 <0.96 25 <0.54 42 6.0 NR <0.30 <6.0 <0.94 0.74 J <0.39 <0.27 2.9 <0.73 <0.32 1.7 J <0.36 <0.33 <0.33
MW-3 10/24/2005 <2.93 <0.142 <0.120 <0.130 <0.317 <0.185 NA <0.186 <0.108 <0.151 <0.187 NA <0.142 <2.44 <0.231 <0.201 <0.140 <0.238 <0.166 0.27 J <0.163 <0.239 <0.246 <0.120 NR
NE 5 80 NE NE 80 NE NE 5 7 70 NE 700 NE 5 5 200 5 5 NE 1,000 2 NE NE 10,000
Notes:
µg/L = micrograms per liter
DCA = dichloroethane
DCE = dichloroethene
MEK = methyl ethyl ketone
PCE = tetrachloroethene
TCA = trichloroethane
TCE = trichloroethene
Freon 113 = 1,1,2-trichloro-1,2,2,-trifluoroethane
<2.93 = indicates result is reported below the laboratory limit of detection
J = indicates the reported result is less than the reporting limit but greater than or equal to the method detection limit
NR = not reported
NA = not analyzed
E = indicates the reported result is estimated
B = indicates the reported analyte was also detected in the method blank at concentrations between the method detection limit and reporting limit
d = The reporting limits were raised due to high analyte concentrations.
US EPA = United States Environmental Protection Agency
MCL = Maximum Contaminant Level
NE = not established
Bold text indicates concentration exceeds the US EPA MCL.
MW-7 also contains 1,1,2,2-Trichloroethane on October 31, 2006 at 2.6 µg/L.
MW-10 also contains Dibromochloromethane on November 22, 2013 at 2.23 µg/L.
MW-14B also contains 1,3-Dichlorobenzene on January 14, 2022 at 0.11 g/L (J qualifier)
MW-2
US EPA MCLs (May 2020)
Well No.Date
Analysis by Method 8260B (in µg/L)
Page 1 of 7
TABLE 3
Monitoring Well Analytical Results for VOCs in Groundwater
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Acetone Benzene
Bromo-
dichloro-
methane
Carbon
Disulfide
Chloro-
ethane
Chloro-
form
Dichloro-
difluoro-
methane
1,1-DCA 1,2-DCA 1,1-DCE cis-1,2-
DCE
1,4
Dioxane
Ethyl-
benzene MEK Methylene
Chloride PCE 1,1,1-
TCA
1,1,2-
TCA TCE Freon 113 Toluene Vinyl
Chloride
m&p-
Xylene
o-
Xylene
Xylenes,
Total
Well No.Date
Analysis by Method 8260B (in µg/L)
10/20/2005 <2.93 <0.142 <0.120 <0.130 <0.317 0.29 J NA <0.186 <0.108 <0.151 <0.187 NA <0.142 <2.44 <0.231 <0.201 <0.140 <0.238 <0.166 <0.147 <0.163 <0.239 <0.246 <0.120 NR
10/30/2006 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 NA <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
11/7/2007 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 NA <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/9/2008 <2.0 <0.50 <0.50 <0.50 <0.50 0.05 J <0.50 0.2 J <0.50 0.08 J <0.50 <30 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 0.3 J 0.03 J <0.50 NR NR <0.50
11/18/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
10/26/2010 <10 <2.0 <2.0 <2.0 <2.0 2.11 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/14/2011 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
10/30/2012 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2013 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/28/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/3/2016 <10.0 <2.00 <5.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 NR <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/16/2017 NR <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 NR
12/10/2018 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/17/2019 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.11 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/16/2020 NR <2.5 <2.5 NR <5.0 <5.0 <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 NR <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 <2.5 <2.5 <2.5 NR
1/14/2022 NR <0.50 <0.50 NR <1.0 <1.0 <1.0 <0.50 <0.50 <0.50 <0.50 NR <0.50 NR <1.0 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 NR
12/6/2022 NR <5.0 <5.0 NR <10 <10 37 1.5 J <5.0 <5.0 <5.0 NR <5.0 NR <10 <5.0 <5.0 <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 NR
11/9/2023 <6.6 <0.31 NR <0.63 <1.4 <0.36 <0.96 0.29 J <0.54 <0.23 <0.32 NR <0.30 <6.0 <0.94 <0.40 <0.39 <0.27 <0.30 2.5 J <0.32 <0.51 <0.36 <0.33 <0.33
10/20/2005 <2.93 <0.142 <0.120 <0.130 <0.317 7.9 NA 2.3 <0.108 1.5 <0.187 NA <0.142 <2.44 <0.231 <0.201 <0.140 <0.238 <0.166 3.0 <0.163 <0.239 <0.246 <0.120 NR
10/31/2006 <10 <2.0 <2.0 <2.0 <2.0 7.1 <2.0 <2.0 <2.0 <2.0 <2.0 NA <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
11/7/2007 <10 <2.0 <2.0 <2.0 <2.0 2.1 <2.0 3.4 <2.0 2.3 <2.0 NA <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
11/07/2007
(BDS-1 duplicate)<10 <2.0 <2.0 <2.0 <2.0 2.0 <2.0 3.3 <2.0 2.4 <2.0 NA <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/9/2008 <2.0 0.06 J <0.50 0.07 JB <0.50 2.5 0.90 6.2 <0.50 3.3 <0.50 30 J <0.50 <2.0 <0.50 <0.50 0.3 J <0.50 <0.50 3.7 0.1 J <0.50 NR NR 0.1 J
12/09/2008
(BD-1 duplicate)<2.0 0.05 J <0.50 <0.50 <0.50 2.9 <0.50 6.9 <0.50 4.1 <0.50 32 <0.50 <2.0 <0.50 <0.50 0.3 J <0.50 <0.50 4.8 0.04 J 0.2 J NR NR <0.50
11/16/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 7.2 <2.0 6.4 <2.0 43 J <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 7.4 <2.0 <1.0 NR NR <2.0
10/26/2010 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 7.34 <2.0 8.17 <2.0 36 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/13/2011 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 8.13 <2.00 10.1 <2.00 93.9 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 3.00 <2.00 <1.00 NR NR <2.00
10/29/2012 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 3.31 <2.00 4.20 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2013 <10.0 <2.00 <2.00 <2.00 <2.00 15.1 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 2.59 <2.00 3.73 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/27/2015 <10.0 <2.00 <2.00 <2.00 <2.00 2.11 <2.00 2.54 <2.00 2.88 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/3/2016 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 2.78 <2.00 3.35 <2.00 NR <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/16/2017 NR <1.0 <1.0 NR <1.0 0.60 J 2.3 2.7 <1.0 3.3 <1.0 NR <1.0 NR <1.0 <1.0 <1.0 <1.0 <1.0 NR <1.0 <1.0 <1.0 <1.0 NR
12/10/2018 NR <0.13 <0.14 NR <0.34 0.71 J <0.16 2.6 <0.22 2.9 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/17/2019 NR <0.13 <0.14 NR <0.34 0.61 J <0.16 1.8 <0.22 1.9 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/16/2020 NR <2.5 <2.5 NR <5.0 <5.0 <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 NR <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 <2.5 <2.5 <2.5 NR
1/14/2022 NR <0.50 <1.0 NR <1.0 1.0 1.1 1.8 <0.50 1.7 <0.50 NR <0.50 NR <1.0 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 NR
12/6/2022 NR <0.50 <0.50 NR <1.0 0.67 J 2.9 1.5 <0.50 2.0 <0.50 NR <0.50 NR <1.0 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 NR
12/6/2022 (DUP-01)NR <0.50 <0.50 NR <1.0 0.66 J 3.0 1.5 <0.50 2.2 <0.50 NR <0.50 NR <1.0 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 NR
11/9/2023 <6.6 0.46 J NR <0.63 <1.4 0.51 J <0.96 8.0 <0.54 7.3 <0.32 NR <0.30 <6.0 <0.94 <0.40 <0.39 <0.27 <0.30 1.6 J <0.32 0.51 J <0.36 <0.33 <0.33
NE 5 80 NE NE 80 NE NE 5 7 70 NE 700 NE 5 5 200 5 5 NE 1,000 2 NE NE 10,000
Notes:
µg/L = micrograms per liter
DCA = dichloroethane
DCE = dichloroethene
MEK = methyl ethyl ketone
PCE = tetrachloroethene
TCA = trichloroethane
TCE = trichloroethene
Freon 113 = 1,1,2-trichloro-1,2,2,-trifluoroethane
<2.93 = indicates result is reported below the laboratory limit of detection
J = indicates the reported result is less than the reporting limit but greater than or equal to the method detection limit
NR = not reported
NA = not analyzed
E = indicates the reported result is estimated
B = indicates the reported analyte was also detected in the method blank at concentrations between the method detection limit and reporting limit
d = The reporting limits were raised due to high analyte concentrations.
US EPA = United States Environmental Protection Agency
MCL = Maximum Contaminant Level
NE = not established
Bold text indicates concentration exceeds the US EPA MCL.
MW-7 also contains 1,1,2,2-Trichloroethane on October 31, 2006 at 2.6 µg/L.
MW-10 also contains Dibromochloromethane on November 22, 2013 at 2.23 µg/L.
MW-14B also contains 1,3-Dichlorobenzene on January 14, 2022 at 0.11 g/L (J qualifier)
MW-4
US EPA MCLs (May 2020)
MW-5
MW-5R
Page 2 of 7
TABLE 3
Monitoring Well Analytical Results for VOCs in Groundwater
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Acetone Benzene
Bromo-
dichloro-
methane
Carbon
Disulfide
Chloro-
ethane
Chloro-
form
Dichloro-
difluoro-
methane
1,1-DCA 1,2-DCA 1,1-DCE cis-1,2-
DCE
1,4
Dioxane
Ethyl-
benzene MEK Methylene
Chloride PCE 1,1,1-
TCA
1,1,2-
TCA TCE Freon 113 Toluene Vinyl
Chloride
m&p-
Xylene
o-
Xylene
Xylenes,
Total
Well No.Date
Analysis by Method 8260B (in µg/L)
10/20/2005 <2.93 <0.142 <0.120 <0.130 <0.317 <0.185 NA <0.186 <0.108 <0.151 <0.187 NA <0.142 <2.44 <0.231 <0.201 <0.140 <0.238 <0.166 <0.147 <0.163 <0.239 <0.246 <0.120 NR
11/7/2007 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 NA <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/9/2008 <2.0 0.03 J <0.50 0.5 JB <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <30 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.2 J <0.50 NR NR 0.2 J
8/18/2005 14,000 NA NA NA 290 <3.7 NA 1,000 NA 1,800 NA NA 25 81 J 260 NA 300 NA 3.7 J 39,000 57 31 94 34 NR
10/25/2005 <2.93 0.25 J 2.2 <0.130 210 E <0.185 NA 550 J <0.108 830 J 1.3 NA 17 110 33 <0.201 28 <0.238 1.9 18,000 29 22 65 27 NR
10/31/2006 39 <2.0 <2.0 <2.0 100 <2.0 <2.0 210 <2.0 520 <2.0 NA 13 28 8.4 <2.0 23 <2.0 <2.0 1,300 20 20 NR NR 70
10/31/2006
(BD-1 duplicate)36 <2.0 <2.0 <2.0 100 <2.0 <2.0 230 <2.0 540 <2.0 NA 13 28 8.4 <2.0 23 <2.0 <2.0 1,500 20 20 NR NR 70
11/19/2009 8,700 <2.0 <2.0 <2.0 92 <2.0 <2.0 800 <2.0 1,900 <2.0 740 21 71 6.0 <2.0 200 <2.0 <2.0 24,000 15 8.2 NR NR 120
11/19/2009
(BDS-2 duplicate)8,200 <2.0 <2.0 <2.0 20 <2.0 <2.0 780 <2.0 1,300 <2.0 480 21 72 2.6 <2.0 200 <2.0 <2.0 24,000 16 13 NR NR 120
12/14/2011 21.9 <2.00 <2.00 27.9 95.3 <2.00 <2.00 345 <2.00 314 <2.00 494 22.9 14.7 5.87 <2.00 3.85 <2.00 <2.00 6,040 10.8 3.98 NR NR 127
12/14/2011
(BDS-2 duplicate)15.8 <2.00 <2.00 69.8 97.1 <2.00 <2.00 333 <2.00 307 <2.00 479 27.5 14.4 3.42 <2.00 3.64 <2.00 <2.00 6,060 10.5 4.62 NR NR 124
10/30/2012 <2.00 <2.00 <2.00 10.6 61.0 <2.00 <2.00 96.4 <2.00 148 <2.00 346 11.4 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 6.54 2.52 NR NR 44.0
10/30/2012
(BDS-1 duplicate)<2.00 <2.00 <2.00 13.8 79.2 <2.00 <2.00 97.6 <2.00 155 <2.00 305 13.0 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 7.05 2.55 NR NR 50.8
11/22/2013 <10.0 <2.00 <2.00 18.8 19.9 <2.00 <2.00 34.3 <2.00 81.7 <2.00 134 3.91 <10.0 <2.00 <2.00 2.66 10.2 <2.00 <2.00 2.84 6.97 NR NR 13.7
11/22/2013
(BDS-2 duplicate)<10.0 <2.00 <2.00 21.6 18.5 <2.00 <2.00 34.0 <2.00 79.8 <2.00 128 3.68 <10.0 <2.00 <2.00 2.75 13.4 <2.00 <2.00 2.68 6.85 NR NR 13.1
11/21/2014 88.6 <2.00 <2.00 19.8 <2.00 <2.00 <2.00 39.7 <2.00 60.4 <2.00 130 2.38 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 173 <2.00 3.49 NR NR 2.11
11/21/2014
(BDS-2 duplicate)516 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 72.8 <2.00 87.6 <2.00 162 2.20 <10.0 8.33 <2.00 <2.00 <2.00 <2.00 830 <2.00 <1.00 NR NR 2.17
8/28/2015 574 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 99.4 <2.00 119 <2.00 394 3.32 12.2 71.8 <2.00 14.6 <2.00 <2.00 1,300 4.08 <1.00 NR NR 4.61
8/28/2015
(BDS-1 duplicate)295 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 108 <2.00 125 <2.00 182 2.80 <10.0 9.75 <2.00 <2.00 <2.00 <2.00 583 2.21 2.51 NR NR 2.69
8/18/2005 240 NA NA NA <1.6 <0.93 NA 420 NA 56 NA NA 1.5 J <12 2.2 J NA 12 NA <0.83 210 4.3 J <1.2 3.6 J 2.6 J NR
8/18/2005
(QA/QC-1 Duplicate)300 NA NA NA <1.6 <0.93 NA 570 NA 87 NA NA 1.6 J <12 2.8 J NA 14 NA <0.83 220 7.3 <1.2 4.8 J 2.9 J NR
10/30/2006 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 410 <2.0 61 <2.0 NA <2.0 <10 <2.0 <2.0 2.5 <2.0 <2.0 190 <2.0 14 NR NR 8.1
NE 5 80 NE NE 80 NE NE 5 7 70 NE 700 NE 5 5 200 5 5 NE 1,000 2 NE NE 10,000
Notes:
µg/L = micrograms per liter
DCA = dichloroethane
DCE = dichloroethene
MEK = methyl ethyl ketone
PCE = tetrachloroethene
TCA = trichloroethane
TCE = trichloroethene
Freon 113 = 1,1,2-trichloro-1,2,2,-trifluoroethane
<2.93 = indicates result is reported below the laboratory limit of detection
J = indicates the reported result is less than the reporting limit but greater than or equal to the method detection limit
NR = not reported
NA = not analyzed
E = indicates the reported result is estimated
B = indicates the reported analyte was also detected in the method blank at concentrations between the method detection limit and reporting limit
d = The reporting limits were raised due to high analyte concentrations.
US EPA = United States Environmental Protection Agency
MCL = Maximum Contaminant Level
NE = not established
Bold text indicates concentration exceeds the US EPA MCL.
MW-7 also contains 1,1,2,2-Trichloroethane on October 31, 2006 at 2.6 µg/L.
MW-10 also contains Dibromochloromethane on November 22, 2013 at 2.23 µg/L.
MW-14B also contains 1,3-Dichlorobenzene on January 14, 2022 at 0.11 g/L (J qualifier)
MW-6
MW-7
MW-8
US EPA MCLs (May 2020)
Page 3 of 7
TABLE 3
Monitoring Well Analytical Results for VOCs in Groundwater
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Acetone Benzene
Bromo-
dichloro-
methane
Carbon
Disulfide
Chloro-
ethane
Chloro-
form
Dichloro-
difluoro-
methane
1,1-DCA 1,2-DCA 1,1-DCE cis-1,2-
DCE
1,4
Dioxane
Ethyl-
benzene MEK Methylene
Chloride PCE 1,1,1-
TCA
1,1,2-
TCA TCE Freon 113 Toluene Vinyl
Chloride
m&p-
Xylene
o-
Xylene
Xylenes,
Total
Well No.Date
Analysis by Method 8260B (in µg/L)
8/19/2005 380 NA NA NA 160 <1.9 NA 440 NA 690 NA NA 16 <24 3.9 J NA 540 NA 1.7 J 3,800 18 <2.4 65 24 NR
10/30/2006 <10 <2.0 <2.0 <2.0 15 <2.0 <2.0 43 <2.0 88 <2.0 NA <2.0 <10 <2.0 <2.0 9.1 <2.0 <2.0 2.4 2.1 4.2 NR NR <2.0
12/14/2011 <10.0 <2.00 <2.00 86.8 101 <2.00 <2.00 233 <2.00 353 <2.00 214 26 <10.0 <2.00 <2.00 212 <2.00 <2.00 1,020 7.12 3.14 NR NR 109
10/30/2012 43.8 <2.00 <2.00 10.6 64.8 <2.00 <2.00 122 <2.00 232 <2.00 128 20.2 <10.0 2.85 <2.00 7.65 <2.00 <2.00 506 5.94 7.03 NR NR 53.7
11/22/2013 <10.0 <2.00 <2.00 3.10 <2.00 10.4 <2.00 4.99 <2.00 10.8 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 3.24 <2.00 <2.00 10.2 <2.00 <1.00 NR NR <2.00
11/21/2014 <10.0 <2.00 <2.00 14.9 <2.00 <2.00 <2.00 23.4 <2.00 39.7 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 23.2 <2.00 3.57 NR NR <2.00
8/28/2015 <10.0 <2.00 <2.00 5.30 <2.00 <2.00 <2.00 41.2 <2.00 55.1 <2.00 108 2.29 <10.0 <2.00 <2.00 6.36 <2.00 <2.00 101 <2.00 2.25 NR NR 2.87
8/19/2005 <2.93 NA NA NA 3.7 1.3 NA 11 NA 23 NA NA <0.142 <2.44 1.1 NA 0.62 J NA 0.29 J 4.8 0.47 J 0.64 J <0.246 <0.120 NR
10/30/2006 <10 <2.0 <2.0 <2.0 24 <2.0 <2.0 32 <2.0 110 <2.0 NA <2.0 <10 <2.0 <2.0 3.4 <2.0 <2.0 <2.0 3.1 4.6 NR NR <2.0
10/30/2012 <10.0 <2.0 <2.0 2.10 <2.0 <2.0 <2.0 85.0 <2.0 203 <2.0 164 6.92 <10.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 6.18 11.6 NR NR 23.3
11/22/2013 <10.0 <2.00 5.64 <2.00 <2.00 14.9 <2.00 <2.00 <2.00 2.42 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/21/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 8.71 <2.00 19.8 <2.00 64.6 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 3.45 NR NR <2.00
8/28/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 13.6 <2.00 28.4 <2.00 75.3 <2.00 <10.0 <2.00 <2.00 5.54 <2.00 <2.00 319 <2.00 1.15 NR NR <2.00
10/25/2005 <2.93 <0.142 <0.120 <0.130 <0.317 <0.185 NA 63 <0.108 13 <0.187 NA 30 12 <0.231 <0.201 81 <0.238 <0.166 12,000 1.8 <0.239 120 51 NR
10/31/2006 6,300 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 23 <2.0 <2.0 <2.0 NA 15 180 6,400 <2.0 20 <2.0 <2.0 2,800 3.2 1.2 NR NR 90
11/19/2009 8,400 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 34 <2.0 5.0 <2.0 <50 220 17 <2.0 <2.0 33 <2.0 <2.0 1,500 7.5 <1.0 NR NR 690
12/14/2011 11,800 <2.00 <2.00 51.7 <2.00 <2.00 <2.00 10.5 <2.00 <2.00 <2.00 <50.0 355 19.9 3.50 <2.00 22.4 <2.00 <2.00 1,180 5.2 <1.00 NR NR 887
10/30/2012 <10.0 <2.00 <2.00 8.39 <2.00 <2.00 <2.00 32.7 <2.00 13.4 <2.00 <50.0 291 <10.0 <2.00 <2.00 20.0 <2.00 <2.00 1,980 3.70 <1.00 NR NR 930
11/22/2013 d <5,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <25,000 <1,000 <5,000 <1,000 <1,000 <1,000 <1,000 <1,000 47,200 <1,000 <500 NR NR <1,000
11/21/2014 16.5 <2.00 <2.00 43.4 <2.00 <2.00 <2.00 8.67 <2.00 17.4 <2.00 <50.0 21.0 <10.0 <2.00 <2.00 33.3 <2.00 <2.00 4,690 <2.00 <1.00 NR NR 23.8
8/28/2015 4,950 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 50.6 <2.00 133 <2.00 <50.0 11.3 <10.0 <2.00 <2.00 83.6 <2.00 <2.00 23,300 2.91 <1.00 NR NR 9.41
3/19/2009 75 <2.0 <2.0 <2.0 <2.0 2.2 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 62 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 <2.0 <2.0 <2.0
11/18/2009 110 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 15 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
10/26/2010 61 <2.0 <2.0 9.8 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/13/2011 <10.0 <2.00 <2.00 7.52 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
10/29/2012 34.4 <2.00 <2.00 2.87 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2013 19.8 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2014 16.1 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/27/2015 11.6 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
3/19/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 <2.0 <2.0 <2.0
11/18/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
10/26/2010 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/13/2011 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
10/29/2012 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2013 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/27/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/4/2016 <10.0 <2.00 <5.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 NR <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/15/2017 NR <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 NR
12/10/2018 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/16/2019 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/15/2020 NR <2.5 <2.5 NR <5.0 <5.0 <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 NR <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 <2.5 <2.5 <2.5 NR
NE 5 80 NE NE 80 NE NE 5 7 70 NE 700 NE 5 5 200 5 5 NE 1,000 2 NE NE 10,000
Notes:
µg/L = micrograms per liter
DCA = dichloroethane
DCE = dichloroethene
MEK = methyl ethyl ketone
PCE = tetrachloroethene
TCA = trichloroethane
TCE = trichloroethene
Freon 113 = 1,1,2-trichloro-1,2,2,-trifluoroethane
<2.93 = indicates result is reported below the laboratory limit of detection
J = indicates the reported result is less than the reporting limit but greater than or equal to the method detection limit
NR = not reported
NA = not analyzed
E = indicates the reported result is estimated
B = indicates the reported analyte was also detected in the method blank at concentrations between the method detection limit and reporting limit
d = The reporting limits were raised due to high analyte concentrations.
US EPA = United States Environmental Protection Agency
MCL = Maximum Contaminant Level
NE = not established
Bold text indicates concentration exceeds the US EPA MCL.
MW-7 also contains 1,1,2,2-Trichloroethane on October 31, 2006 at 2.6 µg/L.
MW-10 also contains Dibromochloromethane on November 22, 2013 at 2.23 µg/L.
MW-14B also contains 1,3-Dichlorobenzene on January 14, 2022 at 0.11 g/L (J qualifier)
MW-11
MW-12B
US EPA MCLs (May 2020)
MW-12A
MW-9
MW-10
Page 4 of 7
TABLE 3
Monitoring Well Analytical Results for VOCs in Groundwater
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Acetone Benzene
Bromo-
dichloro-
methane
Carbon
Disulfide
Chloro-
ethane
Chloro-
form
Dichloro-
difluoro-
methane
1,1-DCA 1,2-DCA 1,1-DCE cis-1,2-
DCE
1,4
Dioxane
Ethyl-
benzene MEK Methylene
Chloride PCE 1,1,1-
TCA
1,1,2-
TCA TCE Freon 113 Toluene Vinyl
Chloride
m&p-
Xylene
o-
Xylene
Xylenes,
Total
Well No.Date
Analysis by Method 8260B (in µg/L)
12/16/2008 <2.0 0.1 J <0.50 <0.50 <0.50 0.77 <0.50 0.2 J <0.50 <0.50 <0.50 <30 0.07 J <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 1.5 0.2 J <0.50 NR NR 1.0
11/20/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
10/26/2010 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/13/2011 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
10/30/2012 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2013 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/28/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/4/2016 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 NR <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/16/2017 NR <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 NR
12/7/2018 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/17/2019 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/16/2020 NR <2.5 <2.5 NR <5.0 <5.0 <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 NR <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 <2.5 <2.5 <2.5 NR
1/13/2022 NR <2.5 <2.5 NR <5.0 <5.0 <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 NR <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 <2.5 <2.5 <2.5 NR
12/16/2008 <2.0 0.04 J <0.50 0.3 JB 0.96 0.65 <0.50 <0.50 <0.50 <0.50 <0.50 <30 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 0.60 0.07 J <0.50 NR NR <0.50
11/18/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
10/26/2010 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/13/2011 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
12/13/2011
(BDS-1 duplicate)<10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
10/30/2012 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2013 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/28/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/4/2016 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 NR <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/16/2017 NR <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 NR <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 NR
12/7/2018 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/17/2019 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.11 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/16/2020 NR <2.5 <2.5 NR <5.0 <5.0 <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 NR <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 <2.5 <2.5 <2.5 NR
1/13/2022 NR <0.50 <0.50 NR <1.0 <1.0 <1.0 <0.50 <0.50 <0.50 <0.50 NR <0.50 NR <1.0 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 NR
12/16/2008 <2.0 <0.50 <0.50 0.1 JB <0.50 0.2 J <0.50 <0.50 <0.50 <0.50 <0.50 <30 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.04 J <0.50 NR NR <0.50
11/17/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 3.7 <2.0 <1.0 NR NR <2.0
10/25/2010 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
5/23/2014 <10.0 <2.00 <2.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/31/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
NE 5 80 NE NE 80 NE NE 5 7 70 NE 700 NE 5 5 200 5 5 NE 1,000 2 NE NE 10,000
Notes:
µg/L = micrograms per liter
DCA = dichloroethane
DCE = dichloroethene
MEK = methyl ethyl ketone
PCE = tetrachloroethene
TCA = trichloroethane
TCE = trichloroethene
Freon 113 = 1,1,2-trichloro-1,2,2,-trifluoroethane
<2.93 = indicates result is reported below the laboratory limit of detection
J = indicates the reported result is less than the reporting limit but greater than or equal to the method detection limit
NR = not reported
NA = not analyzed
E = indicates the reported result is estimated
B = indicates the reported analyte was also detected in the method blank at concentrations between the method detection limit and reporting limit
d = The reporting limits were raised due to high analyte concentrations.
US EPA = United States Environmental Protection Agency
MCL = Maximum Contaminant Level
NE = not established
Bold text indicates concentration exceeds the US EPA MCL.
MW-7 also contains 1,1,2,2-Trichloroethane on October 31, 2006 at 2.6 µg/L.
MW-10 also contains Dibromochloromethane on November 22, 2013 at 2.23 µg/L.
MW-14B also contains 1,3-Dichlorobenzene on January 14, 2022 at 0.11 g/L (J qualifier)
MW-13B
MW-13A
MW-13C
US EPA MCLs (May 2020)
Page 5 of 7
TABLE 3
Monitoring Well Analytical Results for VOCs in Groundwater
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Acetone Benzene
Bromo-
dichloro-
methane
Carbon
Disulfide
Chloro-
ethane
Chloro-
form
Dichloro-
difluoro-
methane
1,1-DCA 1,2-DCA 1,1-DCE cis-1,2-
DCE
1,4
Dioxane
Ethyl-
benzene MEK Methylene
Chloride PCE 1,1,1-
TCA
1,1,2-
TCA TCE Freon 113 Toluene Vinyl
Chloride
m&p-
Xylene
o-
Xylene
Xylenes,
Total
Well No.Date
Analysis by Method 8260B (in µg/L)
12/17/2008 <2.0 0.63 <0.50 1.2 B <0.50 2.3 <0.50 0.1 J <0.50 0.09 J <0.50 <30 0.1 J <2.0 0.2 J <0.50 <0.50 <0.50 <0.50 <0.50 20 <0.50 NR NR 1.7
11/17/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
10/27/2010 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/13/2011 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
10/30/2012 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2013 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/31/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/3/2016 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 NR <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/16/2017 NR <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 NR
12/7/2018 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.10 NR <0.35 <0.35 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/17/2019 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/15/2020 NR <2.5 <2.5 NR <5.0 <5.0 <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 NR <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 <2.5 <2.5 <2.5 NR
1/13/2022 NR <2.5 <2.5 NR <5.0 <5.0 <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.6 NR <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 <2.5 <2.5 <2.5 NR
12/17/2008 2 J 0.3 J <0.50 1.6 B <0.50 1.6 <0.50 0.03 J <0.50 <0.50 <0.50 <30 0.1 J <2.0 0.2 J <0.50 <0.50 <0.50 <0.50 <0.50 0.3 J <0.50 NR NR 1.3
12/17/2008
(BDS-2 duplicate)<2.0 0.3 J <0.50 0.5 JB <0.50 0.98 <0.50 <0.50 <0.50 <0.50 <0.50 <30 0.2 J <2.0 0.1 J <0.50 <0.50 <0.50 <0.50 <0.50 0.4 J <0.50 NR NR 0.92
11/17/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
10/26/2010 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/13/2011 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
10/30/2012 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2013 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/31/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/3/2016 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 NR <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/15/2017 NR <5.0 <5.0 NR <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 NR <5.0 NR <5.0 <5.0 <5.0 <5.0 <5.0 NR <5.0 <5.0 <5.0 <5.0 NR
12/7/2018 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/17/2019 NR <0.13 <0.14 NR <0.34 <0.12 <0.16 <0.10 <0.22 <0.14 <0.10 NR <0.10 NR <0.35 <0.10 <0.19 <0.31 <0.13 NR <0.25 <0.22 <0.18 <0.10 NR
12/15/2020 NR <2.5 <2.5 NR <5.0 <5.0 <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 NR <5.0 <2.5 <2.5 <2.5 <2.5 NR <2.5 <2.5 <2.5 <2.5 NR
1/13/2022 NR <0.50 <0.50 NR <1.0 <1.0 <1.0 <0.50 <0.50 <0.50 <0.50 NR <0.50 NR <1.0 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 NR
12/18/2008 <2.0 <0.50 <0.50 0.07 JB <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <30 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.03 J <0.50 NR NR <0.50
11/17/2009 <10 <2.0 <2.0 3.3 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
11/17/2009
(BDS-1 duplicate)<10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
10/26/2010 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
12/13/2011 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
10/30/2012 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2013 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/31/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
NE 5 80 NE NE 80 NE NE 5 7 70 NE 700 NE 5 5 200 5 5 NE 1,000 2 NE NE 10,000
Notes:
µg/L = micrograms per liter
DCA = dichloroethane
DCE = dichloroethene
MEK = methyl ethyl ketone
PCE = tetrachloroethene
TCA = trichloroethane
TCE = trichloroethene
Freon 113 = 1,1,2-trichloro-1,2,2,-trifluoroethane
<2.93 = indicates result is reported below the laboratory limit of detection
J = indicates the reported result is less than the reporting limit but greater than or equal to the method detection limit
NR = not reported
NA = not analyzed
E = indicates the reported result is estimated
B = indicates the reported analyte was also detected in the method blank at concentrations between the method detection limit and reporting limit
d = The reporting limits were raised due to high analyte concentrations.
US EPA = United States Environmental Protection Agency
MCL = Maximum Contaminant Level
NE = not established
Bold text indicates concentration exceeds the US EPA MCL.
MW-7 also contains 1,1,2,2-Trichloroethane on October 31, 2006 at 2.6 µg/L.
MW-10 also contains Dibromochloromethane on November 22, 2013 at 2.23 µg/L.
MW-14B also contains 1,3-Dichlorobenzene on January 14, 2022 at 0.11 g/L (J qualifier)
MW-14A
MW-14C
MW-14B
US EPA MCLs (May 2020)
Page 6 of 7
TABLE 3
Monitoring Well Analytical Results for VOCs in Groundwater
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Acetone Benzene
Bromo-
dichloro-
methane
Carbon
Disulfide
Chloro-
ethane
Chloro-
form
Dichloro-
difluoro-
methane
1,1-DCA 1,2-DCA 1,1-DCE cis-1,2-
DCE
1,4
Dioxane
Ethyl-
benzene MEK Methylene
Chloride PCE 1,1,1-
TCA
1,1,2-
TCA TCE Freon 113 Toluene Vinyl
Chloride
m&p-
Xylene
o-
Xylene
Xylenes,
Total
Well No.Date
Analysis by Method 8260B (in µg/L)
12/18/2008 <2.0 <0.50 <0.50 0.1 JB <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <30 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.05 J <0.50 NR NR <0.50
11/17/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
10/25/2010 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 NR NR <2.0
1/30/2009 <10 <2.0 <2.0 <2.0 4.9 <2.0 <2.0 40 <2.0 <2.0 3.8 230 <2.0 <10 <2.0 28 4.9 <2.0 18 3,500 <2.0 13 <2.0 <2.0 <2.0
3/4/2009 13 <2.0 <2.0 <2.0 3.7 <2.0 240 110 <2.0 88 6.1 260 <2.0 <10 <2.0 80 7.2 <2.0 34 6,700 <2.0 5.4 <2.0 <2.0 <2.0
1/30/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 3.1 <2.0 <2.0 <2.0 <50 <2.0 <10 <2.0 <2.0 <2.0 <2.0 <2.0 8,500 <2.0 <1.0 <2.0 <2.0 <2.0
3/4/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 8.8 10 <2.0 34 <2.0 <50 <2.0 <10 <2.0 27 8.7 <2.0 2.2 2,300 <2.0 <1.0 <2.0 <2.0 <2.0
02/19/09 b <43 <5.2 <2.1 <9.8 <3 <2.4 <2.2 <1.5 <2.1 <1.5 <3.3 <180 <1.4 <33 <2.5 <1.8 <1.1 <1.7 <1.1 <2.1 <7.5 <1.6 <11 <1.2 <3
02/20/09 b <43 <5.2 <2.1 <9.8 <3 <2.4 <2.2 <1.5 <2.1 <1.5 <3.3 <180 <1.4 <33 <2.5 <1.8 <1.1 <1.7 <1.1 <2.1 <7.5 <1.6 <11 <1.2 <3
2/20/2009 <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <50 0.2 J <10 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 <2.0 <2.0 <2.0
02/23/09b <86 <10 <4.2 <20 <6 <4.8 8 J <3 <4.2 <3 <6.6 <350 <2.8 <66 <5 <3.6 8 J <3.4 <2.2 670 <15 <3.2 <22 <2.4 <6
02/24/09 b <2,200 <260 <100 <490 <150 <120 <110 <75 <100 <75 <160 <8,900 <70 <1,600 <120 <90 <55 <85 <55 <100 <380 <80 <540 <60 <150
02/24/09 b <43 <5.2 <2.1 <9.8 <3 <2.4 <2.2 <1.5 <2.1 <1.5 <3.3 <180 <1.4 <33 <2.5 <1.8 <1.1 <1.7 <1.1 <2.1 <7.5 <1.6 <11 <1.2 <3
02/21/09 b <86 <10 <4.2 <20 <6 <4.8 <4.4 <3 <4.2 <3 <6.6 <350 <2.8 <66 <5 <3.6 <2.2 <3.4 <2.2 <4.2 <15 <3.2 <22 <2.4 <6
02/21/09 b <860 <100 <42 <200 <60 <48 <44 <30 <42 <30 <66 <3,500 <28 <660 <50 <36 <22 <34 <22 <42 <150 <32 <220 <24 <60
02/23/09 b <220 <26 <10 <49 <15 <12 <11 <7.5 <10 <7.5 <16 <890 <7 <160 <12 <9 <5.5 <8.5 <5.5 <10 <38 <8 <54 <6 <15
12/12/2011 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
10/30/2012 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
12/12/11 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
10/30/2012
(BDS-2 duplicate)<10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2013 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/19/2013
(BDS-1 duplicate)<10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2014 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
11/20/2014
(BDS-1 duplicate)<10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/31/2015 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
8/31/2015
(BDS-2 duplicate)<10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <50.0 <2.00 <10.0 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <1.00 NR NR <2.00
NE 5 80 NE NE 80 NE NE 5 7 70 NE 700 NE 5 5 200 5 5 NE 1,000 2 NE NE 10,000
Notes:
µg/L = micrograms per liter
DCA = dichloroethane
DCE = dichloroethene
MEK = methyl ethyl ketone
PCE = tetrachloroethene
TCA = trichloroethane
TCE = trichloroethene
Freon 113 = 1,1,2-trichloro-1,2,2,-trifluoroethane
<2.93 = indicates result is reported below the laboratory limit of detection
J = indicates the reported result is less than the reporting limit but greater than or equal to the method detection limit
NR = not reported
NA = not analyzed
E = indicates the reported result is estimated
B = indicates the reported analyte was also detected in the method blank at concentrations between the method detection limit and reporting limit
d = The reporting limits were raised due to high analyte concentrations.
US EPA = United States Environmental Protection Agency
MCL = Maximum Contaminant Level
NE = not established
Bold text indicates concentration exceeds the US EPA MCL.
MW-7 also contains 1,1,2,2-Trichloroethane on October 31, 2006 at 2.6 µg/L.
MW-10 also contains Dibromochloromethane on November 22, 2013 at 2.23 µg/L.
MW-14B also contains 1,3-Dichlorobenzene on January 14, 2022 at 0.11 g/L (J qualifier)
MW-15C
US EPA MCLs (May 2020)
Page 7 of 7
TABLE 4
Monitoring Well Analytical Results for Nickel in Groundwater
Northrop Grumman Systems Corporation
2211 West North Temple
Salt Lake City, Utah
Well No.Date Analysis Type Nickel
(Analysis by Method 6010C)
Nickel
(Analysis by Method
6020A/6020B)
8/27/2015 Total NA 0.00509
8/27/2015 Dissolved NA <0.00200
10/16/2015 Total NA <0.00200
10/16/2015 Dissolved NA <0.00200
8/27/2015 Total NA 0.00770
5/12/2016 Dissolved NA 0.00243
8/28/2015 Total 0.00646 0.00657
5/12/2016 Dissolved NA <0.0200
8/28/2015 Total 0.856 0.861
10/16/2015 Total NA 0.125
10/16/2015 Dissolved NA 0.141
11/16/2017 Dissolved NA 0.25
12/10/2018 Dissolved NA 0.35
12/17/2019 Dissolved NA 0.025
12/16/2020 Dissolved NA 0.93
1/14/2022 Dissolved NA 0.54
12/6/2022 Dissolved NA 0.63
11/9/2023 Dissolved NA 0.600
8/27/2015 Total NA 0.0141
5/12/2016 Dissolved NA 0.140
11/16/2017 Dissolved NA 0.098
12/10/2018 Dissolved NA 0.062
12/17/2019 Dissolved NA 0.028
12/16/2020 Dissolved NA <0.0020
1/14/2022 Dissolved NA 0.091
12/6/2022 Dissolved NA 0.032
MW-5R 11/9/2023 Dissolved NA 0.0016 J
8/27/2015 Total NA 0.00641
5/12/2016 Dissolved NA <0.00200
11/20/2015 Total NA 0.0118
11/20/2015 Dissolved NA 0.00488
11/20/2015 Total NA 0.0149
11/20/2015 Dissolved NA <0.00200
11/20/2015 Total NA 0.00257
11/20/2015 Dissolved NA <0.00200
11/20/2015 Total NA 0.00628
11/20/2015 Dissolved NA <0.00200
11/20/2015 Total NA 0.00372
11/20/2015 Dissolved NA <0.00200
8/27/2015 Total NA 0.0172
5/12/2016 Dissolved NA 0.0128
8/27/2015 Total NA <0.00200
5/12/2016 Dissolved NA <0.00200
8/28/2015 Total 0.0161 0.0160
5/12/2016 Dissolved NS <0.00200
8/28/2015 Total <0.00500 <0.00200
5/12/2016 Dissolved NA <0.00200
MW-13C 8/31/2015 Total NA <0.00200
MW-15C 8/31/2015 Total NA <0.00200
12/16/2015 Total NA 0.971
12/16/2015 Dissolved NA 0.0189
12/17/2015 Total NA 0.821
12/17/2015 Dissolved NA 0.0217
Notes:
Concentrations reported in micrograms per liter (mg/L)
< = indicates concentration reported below the laboratory limit of detection
NA = not analyzed
MW-9
MW-1
MW-2
MW-3
MW-6
MW-7
MW-8
MW-5
MW-4
CL-03
CL-05
MW-10
MW-11
MW-12A
MW-12B
MW-13A
MW-13B
Page 1 of 1

Figures

PHONE: [phone] JOB NUMBER:DRAWN BY:CHECKED BY:APPROVED BY:193709721 TH AR CM
SITE LOCATION MAP
FIGURE:
DATE:02/28/20
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Tool
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O & R
Women
Men
SMT Stores
Wave Solder
Coating Lobby Guard
MW-13C
MW-13AMW-13B
MW-15C
MW-12A
MW-14C
MW-12B
MW-14BMW-14A
MW-10
MW-5
MW-6
MW-4
MW-1
MW-3
MW-2
SB-6
SB-5
SB-4
SB-7SB-9
SB-10
SB-11SB-12
SB-13
SB-14
SB-3SB-1
SB-2
SB-40
SB-41
SB-42
SB-43
SB-44 SB-45
SB-39SB-37
SB-38
SB-36
SB-46
SB-47
SB-48
SB-49
SB-50
SB-52
SB-51
SB-30
SB-31
SB-32
SB-33
SB-34
SB-35 SB-53
SB-54
SB-55
SB-56
SB-22
SB-57
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SB-17
SB-16
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MW-9
MW-7
MW-11
MW-8
SP-5
SP-2
VP-1
SP-1
SP-7 SP-6
SP-8
TP-2 TP-1
SP-9
TP-3
SP-3
VP-2VP-3
SP-4
VP-4
SB-15
PHONE: [phone] JOB NUMBER:DRAWN BY:CHECKED BY:APPROVED BY:19379721 TH AR CM
HISTORICAL SITE LAYOUT AND
SAMPLE LOCATIONS
FIGURE:
DATE:02/28/20
2FOR:NORTHGROP GRUMMAN SYSTEMSCORPORATION2211 W. NORTH TEMPLESALT LAKE CITY, UTAH
U:
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!(Soil Boring by Others (1992)
!(Boring by Secor (2005/2006)
&Geotechnical Boring
&<1" Monitoring Well by Secor (2005)
(&<2" Monitoring Well (1993)
!A 2" and 4" Monitoring Well by Stantec (2008)
x Soil Boring and Grab Groundwater Sample Location
ED Soil Test Pit and Grab Groundwater Sample Location
>(Soil Gas Sample Location (June 2009)ª!CPT Soundings (SECOR, 2007)
Chemical Dispensing Pre 1979 to 1983
Clarifier Pre 1979 to 1934
Current Water Treatment Area 1994 to Present
Freon Tanks and Chem Storage Area 1986 to 1994
Freon Tanks and Chem Storage Area pre 1979 to 1986
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Instrument
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/FTE
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Facilities
Weld
Shop Reliability Material Stores
Tool
Crib
Stores
O & R
Women
Men
SMT Stores
Wave Solder
Coating Lobby Guard
MW-4
MW-2
MW-9
MW-7
MW-11
MW-5R
MW-13C
MW-13A
MW-13B
MW-15C
MW-12A
MW-14C
MW-12B
MW-14B
MW-14A
MW-10
MW-5
MW-6
MW-1
MW-3
MW-8
JOB NUMBER:DRAWN BY:CHECKED BY:APPROVED BY:193709721 AR CM
FIGURE:
DATE:07/11/23
3
FOR:
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Legend
&<1" Monitoring Well by Secor (2005)
(&<2" Monitoring Well (1993)
!A 2" and 4" Monitoring Well by Stantec (2008)
&>Decommissioned Monitoring Well
Chemical Dispensing Pre 1979 to 1983
Clarifier Pre 1979 to 1934
Current Water Treatment Area 1994 to Present
Freon Tanks and Chem Storage Area 1986 to 1994
Freon Tanks and Chem Storage Area pre 1979 to 1986
BRM
NORTHGROP GRUMMAN SYSTEMSCORPORATION2211 W. NORTH TEMPLESALT LAKE CITY, UTAH1165 SCHEURING ROADDE PERE WISCONSIN 54115PHONE: [phone]

Appendix A

Appendix B

ANALYTICAL REPORT
PREPARED FOR
Attn: Andrew Riemer
Stantec Consulting Corporation
1165 Scheuring Road
De Pere, Wisconsin 54115
Generated 11/27/2023 9:24:50 AM
JOB DESCRIPTION
Northrop Grumman, Utah 193708049
JOB NUMBER
280-184418-1
See page two for job notes and contact information.
Arvada CO 80002
4955 Yarrow Street
Eurofins Denver
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Eurofins Denver
Eurofins Denver is a laboratory within TestAmerica Laboratories, Inc., a company within Eurofins Environment Testing Group of Companies
Job Notes
This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the
samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this
page.
The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the
methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written
approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager.
Authorization
Generated
11/27/2023 9:24:50 AM
Authorized for release by
Megan McElheny, Project Manager I
[e-mail]
[phone]
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Table of Contents
Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Laboratory Job ID: 280-184418-1
Page 3 of 37
Eurofins Denver
11/27/2023
Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
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Definitions/Glossary
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Qualifiers
GC/MS VOA
Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Qualifier
Metals
Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Qualifier
Glossary
These commonly used abbreviations may or may not be present in this report.
¤Listed under the "D" column to designate that the result is reported on a dry weight basis
Abbreviation
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins Denver
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Case Narrative
Client: Stantec Consulting Corporation Job ID: 280-184418-1
Project/Site: Northrop Grumman, Utah 193708049
Job ID: 280-184418-1
Laboratory: Eurofins Denver
Narrative
Job Narrative
280-184418-1
Receipt
The samples were received on 11/10/2023 9:50 AM. Unless otherwise noted below, the samples arrived in good condition, and where
required, properly preserved and on ice. The temperature of the cooler at receipt was 4.4º C.
GC/MS VOA
Method 8260D: For Method 8260, the method blank associated with analytical batch 280-634903 contained Acetone greater than one-half
the reporting limit (RL) (15 ug/L) at 11.9 ug/L. The samples were not re-analyzed because Acetone is a common laboratory contaminate
and the associated samples were non-detect for Acetone. The sample results have been qualified and reported.
Method 8260D: For Method 8260, the continuing calibration verification (CCV) associated with batch 280-634903 recovered above the
upper control limit (20%) for Vinyl chloride at 21%. The samples associated with this CCV were non-detects for the affected analytes;
therefore, the data have been reported. All target analytes are within 20% in the CCV. The associated samples are impacted: MW-4
(280-184418-2), MW-5R (280-184418-3), TRIP BLANK (280-184418-5) and (CCV 280-634903/2).
Method 8260D: The following sample(s) was collected in a properly preserved vial; however, the pH of 6 was outside the required criteria
of <2 when verified by the laboratory. The samples were analyzed outside the 7-day holding time specified for unpreserved samples but
within the 14-day holding time specified for preserved samples: MW-2 (280-184418-1) and DUP-01 (280-184418-4).
No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Metals
No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.
General Chemistry
No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.
Eurofins Denver
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Detection Summary
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Client Sample ID: MW-2 Lab Sample ID: 280-184418-1
1,2-Dichloroethane
RL
1.0 ug/L
MDL
0.54
Analyte Result Qualifier Unit Dil Fac D Method Prep Type
Total/NA1J0.54 8260D
Tetrachloroethene 1.0 ug/L0.40 Total/NA10.92 J 8260D
cis-1,2-Dichloroethene 1.0 ug/L0.32 Total/NA15.8 8260D
Ethyl ether 2.0 ug/L0.35 Total/NA10.90 J 8260D
Vinyl chloride 2.0 ug/L0.51 Total/NA11.8 J 8260D
1,1-Dichloroethane 1.0 ug/L0.22 Total/NA1238260D
1,1-Dichloroethene 1.0 ug/L0.23 Total/NA1808260D
Trichloroethene 1.0 ug/L0.30 Total/NA16.3 8260D
1,2-Dichloroethene, Total 1.0 ug/L0.32 Total/NA15.8 8260D
Client Sample ID: MW-4 Lab Sample ID: 280-184418-2
1,1-Dichloroethane
RL
1.0 ug/L
MDL
0.22
Analyte Result Qualifier Unit Dil Fac D Method Prep Type
Total/NA1J0.29 8260D
1,1,2-Trichloro-1,2,2-trifluoroethane 3.0 ug/L0.73 Total/NA12.5 J 8260D
Nickel 3.0 ug/L0.83 Dissolved16006020B
Client Sample ID: MW-5R Lab Sample ID: 280-184418-3
Chloroform
RL
1.0 ug/L
MDL
0.36
Analyte Result Qualifier Unit Dil Fac D Method Prep Type
Total/NA1J0.51 8260D
Benzene 1.0 ug/L0.31 Total/NA10.46 J 8260D
Vinyl chloride 2.0 ug/L0.51 Total/NA10.51 J 8260D
1,1-Dichloroethane 1.0 ug/L0.22 Total/NA18.0 8260D
1,1-Dichloroethene 1.0 ug/L0.23 Total/NA17.3 8260D
1,1,2-Trichloro-1,2,2-trifluoroethane 3.0 ug/L0.73 Total/NA11.6 J 8260D
Trihalomethanes, Total 1.0 ug/L0.36 Total/NA10.51 J 8260D
Total BTEX 1.0 ug/L0.30 Total/NA10.46 J 8260D
Nickel 3.0 ug/L0.83 Dissolved11.6 J 6020B
Client Sample ID: DUP-01 Lab Sample ID: 280-184418-4
Tetrachloroethene
RL
1.0 ug/L
MDL
0.40
Analyte Result Qualifier Unit Dil Fac D Method Prep Type
Total/NA1J0.74 8260D
cis-1,2-Dichloroethene 1.0 ug/L0.32 Total/NA16.0 8260D
Ethyl ether 2.0 ug/L0.35 Total/NA10.99 J 8260D
Vinyl chloride 2.0 ug/L0.51 Total/NA11.7 J 8260D
Carbon disulfide 2.0 ug/L0.63 Total/NA11.5 J 8260D
1,1-Dichloroethane 1.0 ug/L0.22 Total/NA1258260D
1,1-Dichloroethene 1.0 ug/L0.23 Total/NA1428260D
Trichloroethene 1.0 ug/L0.30 Total/NA12.9 8260D
1,2-Dichloroethene, Total 1.0 ug/L0.32 Total/NA16.0 8260D
Client Sample ID: TRIP BLANK Lab Sample ID: 280-184418-5
Tetrahydrofuran
RL
7.0 ug/L
MDL
2.0
Analyte Result Qualifier Unit Dil Fac D Method Prep Type
Total/NA1J2.1 8260D
Eurofins Denver
This Detection Summary does not include radiochemical test results.
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Method Summary
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method Method Description LaboratoryProtocol
SW8468260DVolatile Organic Compounds by GC/MS EET DEN
SW8466020BMetals (ICP/MS)EET DEN
SW8463005APreparation, Total Recoverable or Dissolved Metals EET DEN
SW8465030BPurge and Trap EET DEN
Protocol References:
SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates.
Laboratory References:
EET DEN = Eurofins Denver, 4955 Yarrow Street, Arvada, CO 80002, TEL [phone]
Eurofins Denver
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Sample Summary
Client: Stantec Consulting Corporation Job ID: 280-184418-1
Project/Site: Northrop Grumman, Utah 193708049
Lab Sample ID Client Sample ID Matrix Collected Received
280-184418-1 MW-2 Water 11/09/23 11:05 11/10/23 09:50
280-184418-2 MW-4 Water 11/09/23 12:25 11/10/23 09:50
280-184418-3 MW-5R Water 11/09/23 13:35 11/10/23 09:50
280-184418-4 DUP-01 Water 11/09/23 00:00 11/10/23 09:50
280-184418-5 TRIP BLANK Water 11/09/23 00:00 11/10/23 09:50
Eurofins Denver
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Client Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: SW846 8260D - Volatile Organic Compounds by GC/MS
Lab Sample ID: 280-184418-1Client Sample ID: MW-2
Matrix: WaterDate Collected: 11/09/23 11:05
Date Received: 11/10/23 09:50
RL MDL
ND 1.0 0.30 ug/L 11/22/23 07:02 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Ethylbenzene
1.0 0.36 ug/L 11/22/23 07:02 1NDStyrene
2.0 0.63 ug/L 11/22/23 07:02 1NDcis-1,3-Dichloropropene
2.0 0.65 ug/L 11/22/23 07:02 1NDtrans-1,3-Dichloropropene
1.0 0.53 ug/L 11/22/23 07:02 1NDN-Propylbenzene
1.0 0.48 ug/L 11/22/23 07:02 1NDn-Butylbenzene
1.0 0.21 ug/L 11/22/23 07:02 1ND4-Chlorotoluene
1.0 0.39 ug/L 11/22/23 07:02 1ND1,4-Dichlorobenzene
1.0 0.40 ug/L 11/22/23 07:02 1NDEthylene Dibromide
2.0 0.17 ug/L 11/22/23 07:02 1ND3-Chloro-1-propene
1.0 0.54 ug/L 11/22/23 07:02 10.54 J1,2-Dichloroethane
20 4.5 ug/L 11/22/23 07:02 1NDAcrylonitrile
3.0 0.94 ug/L 11/22/23 07:02 1NDVinyl acetate
5.0 0.98 ug/L 11/22/23 07:02 1ND4-Methyl-2-pentanone (MIBK)
1.0 0.37 ug/L 11/22/23 07:02 1ND1,3,5-Trimethylbenzene
1.0 0.40 ug/L 11/22/23 07:02 1NDBromobenzene
1.0 0.31 ug/L 11/22/23 07:02 1NDMethylcyclohexane
1.0 0.32 ug/L 11/22/23 07:02 1NDToluene
1.0 0.42 ug/L 11/22/23 07:02 1NDChlorobenzene
7.0 2.0 ug/L 11/22/23 07:02 1NDTetrahydrofuran
2.0 0.16 ug/L 11/22/23 07:02 1NDHexane
1.0 0.44 ug/L 11/22/23 07:02 1NDCyclohexane
1.0 0.58 ug/L 11/22/23 07:02 1ND1,2,4-Trichlorobenzene
2.0 0.62 ug/L 11/22/23 07:02 1NDChlorodibromomethane
1.0 0.40 ug/L 11/22/23 07:02 10.92 JTetrachloroethene
1.0 0.45 ug/L 11/22/23 07:02 1NDsec-Butylbenzene
1.0 0.38 ug/L 11/22/23 07:02 1ND1,3-Dichloropropane
1.0 0.32 ug/L 11/22/23 07:02 15.8cis-1,2-Dichloroethene
1.0 0.37 ug/L 11/22/23 07:02 1NDtrans-1,2-Dichloroethene
5.0 0.25 ug/L 11/22/23 07:02 1NDMethyl tert-butyl ether
2.0 0.36 ug/L 11/22/23 07:02 1NDm-Xylene & p-Xylene
1.0 0.33 ug/L 11/22/23 07:02 1ND1,3-Dichlorobenzene
1.0 0.57 ug/L 11/22/23 07:02 1NDCarbon tetrachloride
1.0 0.42 ug/L 11/22/23 07:02 1ND1,1-Dichloropropene
5.0 1.7 ug/L 11/22/23 07:02 1ND2-Hexanone
1.0 0.38 ug/L 11/22/23 07:02 1ND2,2-Dichloropropane
2.0 0.35 ug/L 11/22/23 07:02 10.90 JEthyl ether
1.0 0.58 ug/L 11/22/23 07:02 1ND1,1,1,2-Tetrachloroethane
15 6.6 ug/L 11/22/23 07:02 1NDAcetone
1.0 0.36 ug/L 11/22/23 07:02 1NDChloroform
1.0 0.31 ug/L 11/22/23 07:02 1NDBenzene
1.0 0.39 ug/L 11/22/23 07:02 1ND1,1,1-Trichloroethane
5.0 2.4 ug/L 11/22/23 07:02 1NDBromomethane
2.0 0.75 ug/L 11/22/23 07:02 1NDChloromethane
5.0 2.6 ug/L 11/22/23 07:02 1NDIodomethane
1.0 0.34 ug/L 11/22/23 07:02 1NDDibromomethane
1.0 0.40 ug/L 11/22/23 07:02 1NDChlorobromomethane
4.0 1.4 ug/L 11/22/23 07:02 1NDChloroethane
2.0 0.51 ug/L 11/22/23 07:02 11.8 JVinyl chloride
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Client Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued)
Lab Sample ID: 280-184418-1Client Sample ID: MW-2
Matrix: WaterDate Collected: 11/09/23 11:05
Date Received: 11/10/23 09:50
RL MDL
ND 2.0 0.94 ug/L 11/22/23 07:02 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Methylene Chloride
2.0 0.63 ug/L 11/22/23 07:02 1NDCarbon disulfide
2.0 1.2 ug/L 11/22/23 07:02 1NDBromoform
1.0 0.39 ug/L 11/22/23 07:02 1NDDichlorobromomethane
1.0 0.22 ug/L 11/22/23 07:02 1231,1-Dichloroethane
1.0 0.23 ug/L 11/22/23 07:02 1801,1-Dichloroethene
2.0 0.57 ug/L 11/22/23 07:02 1NDTrichlorofluoromethane
3.0 0.96 ug/L 11/22/23 07:02 1NDDichlorodifluoromethane
3.0 0.73 ug/L 11/22/23 07:02 1ND1,1,2-Trichloro-1,2,2-trifluoroethane
1.0 0.52 ug/L 11/22/23 07:02 1ND1,2-Dichloropropane
15 6.0 ug/L 11/22/23 07:02 1ND2-Butanone (MEK)
1.0 0.27 ug/L 11/22/23 07:02 1ND1,1,2-Trichloroethane
1.0 0.30 ug/L 11/22/23 07:02 16.3Trichloroethene
5.0 1.6 ug/L 11/22/23 07:02 1NDMethyl acetate
1.0 0.21 ug/L 11/22/23 07:02 1ND1,1,2,2-Tetrachloroethane
2.0 0.70 ug/L 11/22/23 07:02 1ND1,2,3-Trichlorobenzene
2.0 1.2 ug/L 11/22/23 07:02 1NDHexachlorobutadiene
2.0 0.63 ug/L 11/22/23 07:02 1NDNaphthalene
1.0 0.33 ug/L 11/22/23 07:02 1NDo-Xylene
1.0 0.34 ug/L 11/22/23 07:02 1ND2-Chlorotoluene
1.0 0.37 ug/L 11/22/23 07:02 1ND1,2-Dichlorobenzene
1.0 0.15 ug/L 11/22/23 07:02 1ND1,2,4-Trimethylbenzene
5.0 1.8 ug/L 11/22/23 07:02 1ND1,2-Dibromo-3-Chloropropane
2.5 0.86 ug/L 11/22/23 07:02 1ND1,2,3-Trichloropropane
3.0 0.86 ug/L 11/22/23 07:02 1NDEthyl methacrylate
1.0 0.42 ug/L 11/22/23 07:02 1NDtert-Butylbenzene
1.0 0.36 ug/L 11/22/23 07:02 1NDIsopropylbenzene
1.0 0.43 ug/L 11/22/23 07:02 1ND4-Isopropyltoluene
1.0 0.33 ug/L 11/22/23 07:02 1NDXylenes, Total
1.0 0.32 ug/L 11/22/23 07:02 15.81,2-Dichloroethene, Total
2.0 0.63 ug/L 11/22/23 07:02 1ND1,3-Dichloropropene, Total
1.0 0.36 ug/L 11/22/23 07:02 1NDTrihalomethanes, Total
1.0 0.30 ug/L 11/22/23 07:02 1NDTotal BTEX
1,2-Dichloroethane-d4 (Surr)113 70 -127 11/22/23 07:02 1
Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery
Dibromofluoromethane (Surr)112 11/22/23 07:02 177-120
Toluene-d8 (Surr)100 11/22/23 07:02 180-125
4-Bromofluorobenzene (Surr)99 11/22/23 07:02 178-120
Lab Sample ID: 280-184418-2Client Sample ID: MW-4
Matrix: WaterDate Collected: 11/09/23 12:25
Date Received: 11/10/23 09:50
RL MDL
ND 1.0 0.30 ug/L 11/21/23 20:45 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Ethylbenzene
1.0 0.36 ug/L 11/21/23 20:45 1NDStyrene
2.0 0.63 ug/L 11/21/23 20:45 1NDcis-1,3-Dichloropropene
2.0 0.65 ug/L 11/21/23 20:45 1NDtrans-1,3-Dichloropropene
1.0 0.53 ug/L 11/21/23 20:45 1NDN-Propylbenzene
1.0 0.48 ug/L 11/21/23 20:45 1NDn-Butylbenzene
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Client Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued)
Lab Sample ID: 280-184418-2Client Sample ID: MW-4
Matrix: WaterDate Collected: 11/09/23 12:25
Date Received: 11/10/23 09:50
RL MDL
ND 1.0 0.21 ug/L 11/21/23 20:45 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
4-Chlorotoluene
1.0 0.39 ug/L 11/21/23 20:45 1ND1,4-Dichlorobenzene
1.0 0.40 ug/L 11/21/23 20:45 1NDEthylene Dibromide
2.0 0.17 ug/L 11/21/23 20:45 1ND3-Chloro-1-propene
1.0 0.54 ug/L 11/21/23 20:45 1ND1,2-Dichloroethane
20 4.5 ug/L 11/21/23 20:45 1NDAcrylonitrile
3.0 0.94 ug/L 11/21/23 20:45 1NDVinyl acetate
5.0 0.98 ug/L 11/21/23 20:45 1ND4-Methyl-2-pentanone (MIBK)
1.0 0.37 ug/L 11/21/23 20:45 1ND1,3,5-Trimethylbenzene
1.0 0.40 ug/L 11/21/23 20:45 1NDBromobenzene
1.0 0.31 ug/L 11/21/23 20:45 1NDMethylcyclohexane
1.0 0.32 ug/L 11/21/23 20:45 1NDToluene
1.0 0.42 ug/L 11/21/23 20:45 1NDChlorobenzene
7.0 2.0 ug/L 11/21/23 20:45 1NDTetrahydrofuran
2.0 0.16 ug/L 11/21/23 20:45 1NDHexane
1.0 0.44 ug/L 11/21/23 20:45 1NDCyclohexane
1.0 0.58 ug/L 11/21/23 20:45 1ND1,2,4-Trichlorobenzene
2.0 0.62 ug/L 11/21/23 20:45 1NDChlorodibromomethane
1.0 0.40 ug/L 11/21/23 20:45 1NDTetrachloroethene
1.0 0.45 ug/L 11/21/23 20:45 1NDsec-Butylbenzene
1.0 0.38 ug/L 11/21/23 20:45 1ND1,3-Dichloropropane
1.0 0.32 ug/L 11/21/23 20:45 1NDcis-1,2-Dichloroethene
1.0 0.37 ug/L 11/21/23 20:45 1NDtrans-1,2-Dichloroethene
5.0 0.25 ug/L 11/21/23 20:45 1NDMethyl tert-butyl ether
2.0 0.36 ug/L 11/21/23 20:45 1NDm-Xylene & p-Xylene
1.0 0.33 ug/L 11/21/23 20:45 1ND1,3-Dichlorobenzene
1.0 0.57 ug/L 11/21/23 20:45 1NDCarbon tetrachloride
1.0 0.42 ug/L 11/21/23 20:45 1ND1,1-Dichloropropene
5.0 1.7 ug/L 11/21/23 20:45 1ND2-Hexanone
1.0 0.38 ug/L 11/21/23 20:45 1ND2,2-Dichloropropane
2.0 0.35 ug/L 11/21/23 20:45 1NDEthyl ether
1.0 0.58 ug/L 11/21/23 20:45 1ND1,1,1,2-Tetrachloroethane
15 6.6 ug/L 11/21/23 20:45 1NDAcetone
1.0 0.36 ug/L 11/21/23 20:45 1NDChloroform
1.0 0.31 ug/L 11/21/23 20:45 1NDBenzene
1.0 0.39 ug/L 11/21/23 20:45 1ND1,1,1-Trichloroethane
5.0 2.4 ug/L 11/21/23 20:45 1NDBromomethane
2.0 0.75 ug/L 11/21/23 20:45 1NDChloromethane
5.0 2.6 ug/L 11/21/23 20:45 1NDIodomethane
1.0 0.34 ug/L 11/21/23 20:45 1NDDibromomethane
1.0 0.40 ug/L 11/21/23 20:45 1NDChlorobromomethane
4.0 1.4 ug/L 11/21/23 20:45 1NDChloroethane
2.0 0.51 ug/L 11/21/23 20:45 1NDVinyl chloride
2.0 0.94 ug/L 11/21/23 20:45 1NDMethylene Chloride
2.0 0.63 ug/L 11/21/23 20:45 1NDCarbon disulfide
2.0 1.2 ug/L 11/21/23 20:45 1NDBromoform
1.0 0.39 ug/L 11/21/23 20:45 1NDDichlorobromomethane
1.0 0.22 ug/L 11/21/23 20:45 10.29 J1,1-Dichloroethane
1.0 0.23 ug/L 11/21/23 20:45 1ND1,1-Dichloroethene
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Client Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued)
Lab Sample ID: 280-184418-2Client Sample ID: MW-4
Matrix: WaterDate Collected: 11/09/23 12:25
Date Received: 11/10/23 09:50
RL MDL
ND 2.0 0.57 ug/L 11/21/23 20:45 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Trichlorofluoromethane
3.0 0.96 ug/L 11/21/23 20:45 1NDDichlorodifluoromethane
3.0 0.73 ug/L 11/21/23 20:45 12.5 J1,1,2-Trichloro-1,2,2-trifluoroetha
ne
1.0 0.52 ug/L 11/21/23 20:45 1ND1,2-Dichloropropane
15 6.0 ug/L 11/21/23 20:45 1ND2-Butanone (MEK)
1.0 0.27 ug/L 11/21/23 20:45 1ND1,1,2-Trichloroethane
1.0 0.30 ug/L 11/21/23 20:45 1NDTrichloroethene
5.0 1.6 ug/L 11/21/23 20:45 1NDMethyl acetate
1.0 0.21 ug/L 11/21/23 20:45 1ND1,1,2,2-Tetrachloroethane
2.0 0.70 ug/L 11/21/23 20:45 1ND1,2,3-Trichlorobenzene
2.0 1.2 ug/L 11/21/23 20:45 1NDHexachlorobutadiene
2.0 0.63 ug/L 11/21/23 20:45 1NDNaphthalene
1.0 0.33 ug/L 11/21/23 20:45 1NDo-Xylene
1.0 0.34 ug/L 11/21/23 20:45 1ND2-Chlorotoluene
1.0 0.37 ug/L 11/21/23 20:45 1ND1,2-Dichlorobenzene
1.0 0.15 ug/L 11/21/23 20:45 1ND1,2,4-Trimethylbenzene
5.0 1.8 ug/L 11/21/23 20:45 1ND1,2-Dibromo-3-Chloropropane
2.5 0.86 ug/L 11/21/23 20:45 1ND1,2,3-Trichloropropane
3.0 0.86 ug/L 11/21/23 20:45 1NDEthyl methacrylate
1.0 0.42 ug/L 11/21/23 20:45 1NDtert-Butylbenzene
1.0 0.36 ug/L 11/21/23 20:45 1NDIsopropylbenzene
1.0 0.43 ug/L 11/21/23 20:45 1ND4-Isopropyltoluene
1.0 0.33 ug/L 11/21/23 20:45 1NDXylenes, Total
1.0 0.32 ug/L 11/21/23 20:45 1ND1,2-Dichloroethene, Total
2.0 0.63 ug/L 11/21/23 20:45 1ND1,3-Dichloropropene, Total
1.0 0.36 ug/L 11/21/23 20:45 1NDTrihalomethanes, Total
1.0 0.30 ug/L 11/21/23 20:45 1NDTotal BTEX
1,2-Dichloroethane-d4 (Surr)114 70 -127 11/21/23 20:45 1
Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery
Dibromofluoromethane (Surr)111 11/21/23 20:45 177-120
Toluene-d8 (Surr)100 11/21/23 20:45 180-125
4-Bromofluorobenzene (Surr)95 11/21/23 20:45 178-120
Lab Sample ID: 280-184418-3Client Sample ID: MW-5R
Matrix: WaterDate Collected: 11/09/23 13:35
Date Received: 11/10/23 09:50
RL MDL
ND 1.0 0.30 ug/L 11/21/23 21:05 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Ethylbenzene
1.0 0.36 ug/L 11/21/23 21:05 1NDStyrene
2.0 0.63 ug/L 11/21/23 21:05 1NDcis-1,3-Dichloropropene
2.0 0.65 ug/L 11/21/23 21:05 1NDtrans-1,3-Dichloropropene
1.0 0.53 ug/L 11/21/23 21:05 1NDN-Propylbenzene
1.0 0.48 ug/L 11/21/23 21:05 1NDn-Butylbenzene
1.0 0.21 ug/L 11/21/23 21:05 1ND4-Chlorotoluene
1.0 0.39 ug/L 11/21/23 21:05 1ND1,4-Dichlorobenzene
1.0 0.40 ug/L 11/21/23 21:05 1NDEthylene Dibromide
2.0 0.17 ug/L 11/21/23 21:05 1ND3-Chloro-1-propene
1.0 0.54 ug/L 11/21/23 21:05 1ND1,2-Dichloroethane
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Client Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued)
Lab Sample ID: 280-184418-3Client Sample ID: MW-5R
Matrix: WaterDate Collected: 11/09/23 13:35
Date Received: 11/10/23 09:50
RL MDL
ND 20 4.5 ug/L 11/21/23 21:05 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Acrylonitrile
3.0 0.94 ug/L 11/21/23 21:05 1NDVinyl acetate
5.0 0.98 ug/L 11/21/23 21:05 1ND4-Methyl-2-pentanone (MIBK)
1.0 0.37 ug/L 11/21/23 21:05 1ND1,3,5-Trimethylbenzene
1.0 0.40 ug/L 11/21/23 21:05 1NDBromobenzene
1.0 0.31 ug/L 11/21/23 21:05 1NDMethylcyclohexane
1.0 0.32 ug/L 11/21/23 21:05 1NDToluene
1.0 0.42 ug/L 11/21/23 21:05 1NDChlorobenzene
7.0 2.0 ug/L 11/21/23 21:05 1NDTetrahydrofuran
2.0 0.16 ug/L 11/21/23 21:05 1NDHexane
1.0 0.44 ug/L 11/21/23 21:05 1NDCyclohexane
1.0 0.58 ug/L 11/21/23 21:05 1ND1,2,4-Trichlorobenzene
2.0 0.62 ug/L 11/21/23 21:05 1NDChlorodibromomethane
1.0 0.40 ug/L 11/21/23 21:05 1NDTetrachloroethene
1.0 0.45 ug/L 11/21/23 21:05 1NDsec-Butylbenzene
1.0 0.38 ug/L 11/21/23 21:05 1ND1,3-Dichloropropane
1.0 0.32 ug/L 11/21/23 21:05 1NDcis-1,2-Dichloroethene
1.0 0.37 ug/L 11/21/23 21:05 1NDtrans-1,2-Dichloroethene
5.0 0.25 ug/L 11/21/23 21:05 1NDMethyl tert-butyl ether
2.0 0.36 ug/L 11/21/23 21:05 1NDm-Xylene & p-Xylene
1.0 0.33 ug/L 11/21/23 21:05 1ND1,3-Dichlorobenzene
1.0 0.57 ug/L 11/21/23 21:05 1NDCarbon tetrachloride
1.0 0.42 ug/L 11/21/23 21:05 1ND1,1-Dichloropropene
5.0 1.7 ug/L 11/21/23 21:05 1ND2-Hexanone
1.0 0.38 ug/L 11/21/23 21:05 1ND2,2-Dichloropropane
2.0 0.35 ug/L 11/21/23 21:05 1NDEthyl ether
1.0 0.58 ug/L 11/21/23 21:05 1ND1,1,1,2-Tetrachloroethane
15 6.6 ug/L 11/21/23 21:05 1NDAcetone
1.0 0.36 ug/L 11/21/23 21:05 10.51 JChloroform
1.0 0.31 ug/L 11/21/23 21:05 10.46 JBenzene
1.0 0.39 ug/L 11/21/23 21:05 1ND1,1,1-Trichloroethane
5.0 2.4 ug/L 11/21/23 21:05 1NDBromomethane
2.0 0.75 ug/L 11/21/23 21:05 1NDChloromethane
5.0 2.6 ug/L 11/21/23 21:05 1NDIodomethane
1.0 0.34 ug/L 11/21/23 21:05 1NDDibromomethane
1.0 0.40 ug/L 11/21/23 21:05 1NDChlorobromomethane
4.0 1.4 ug/L 11/21/23 21:05 1NDChloroethane
2.0 0.51 ug/L 11/21/23 21:05 10.51 JVinyl chloride
2.0 0.94 ug/L 11/21/23 21:05 1NDMethylene Chloride
2.0 0.63 ug/L 11/21/23 21:05 1NDCarbon disulfide
2.0 1.2 ug/L 11/21/23 21:05 1NDBromoform
1.0 0.39 ug/L 11/21/23 21:05 1NDDichlorobromomethane
1.0 0.22 ug/L 11/21/23 21:05 18.01,1-Dichloroethane
1.0 0.23 ug/L 11/21/23 21:05 17.31,1-Dichloroethene
2.0 0.57 ug/L 11/21/23 21:05 1NDTrichlorofluoromethane
3.0 0.96 ug/L 11/21/23 21:05 1NDDichlorodifluoromethane
3.0 0.73 ug/L 11/21/23 21:05 11.6 J1,1,2-Trichloro-1,2,2-trifluoroetha
ne
1.0 0.52 ug/L 11/21/23 21:05 1ND1,2-Dichloropropane
15 6.0 ug/L 11/21/23 21:05 1ND2-Butanone (MEK)
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Client Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued)
Lab Sample ID: 280-184418-3Client Sample ID: MW-5R
Matrix: WaterDate Collected: 11/09/23 13:35
Date Received: 11/10/23 09:50
RL MDL
ND 1.0 0.27 ug/L 11/21/23 21:05 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
1,1,2-Trichloroethane
1.0 0.30 ug/L 11/21/23 21:05 1NDTrichloroethene
5.0 1.6 ug/L 11/21/23 21:05 1NDMethyl acetate
1.0 0.21 ug/L 11/21/23 21:05 1ND1,1,2,2-Tetrachloroethane
2.0 0.70 ug/L 11/21/23 21:05 1ND1,2,3-Trichlorobenzene
2.0 1.2 ug/L 11/21/23 21:05 1NDHexachlorobutadiene
2.0 0.63 ug/L 11/21/23 21:05 1NDNaphthalene
1.0 0.33 ug/L 11/21/23 21:05 1NDo-Xylene
1.0 0.34 ug/L 11/21/23 21:05 1ND2-Chlorotoluene
1.0 0.37 ug/L 11/21/23 21:05 1ND1,2-Dichlorobenzene
1.0 0.15 ug/L 11/21/23 21:05 1ND1,2,4-Trimethylbenzene
5.0 1.8 ug/L 11/21/23 21:05 1ND1,2-Dibromo-3-Chloropropane
2.5 0.86 ug/L 11/21/23 21:05 1ND1,2,3-Trichloropropane
3.0 0.86 ug/L 11/21/23 21:05 1NDEthyl methacrylate
1.0 0.42 ug/L 11/21/23 21:05 1NDtert-Butylbenzene
1.0 0.36 ug/L 11/21/23 21:05 1NDIsopropylbenzene
1.0 0.43 ug/L 11/21/23 21:05 1ND4-Isopropyltoluene
1.0 0.33 ug/L 11/21/23 21:05 1NDXylenes, Total
1.0 0.32 ug/L 11/21/23 21:05 1ND1,2-Dichloroethene, Total
2.0 0.63 ug/L 11/21/23 21:05 1ND1,3-Dichloropropene, Total
1.0 0.36 ug/L 11/21/23 21:05 10.51 JTrihalomethanes, Total
1.0 0.30 ug/L 11/21/23 21:05 10.46 JTotal BTEX
1,2-Dichloroethane-d4 (Surr)112 70 -127 11/21/23 21:05 1
Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery
Dibromofluoromethane (Surr)110 11/21/23 21:05 177-120
Toluene-d8 (Surr)100 11/21/23 21:05 180-125
4-Bromofluorobenzene (Surr)95 11/21/23 21:05 178-120
Lab Sample ID: 280-184418-4Client Sample ID: DUP-01
Matrix: WaterDate Collected: 11/09/23 00:00
Date Received: 11/10/23 09:50
RL MDL
ND 1.0 0.30 ug/L 11/22/23 07:22 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Ethylbenzene
1.0 0.36 ug/L 11/22/23 07:22 1NDStyrene
2.0 0.63 ug/L 11/22/23 07:22 1NDcis-1,3-Dichloropropene
2.0 0.65 ug/L 11/22/23 07:22 1NDtrans-1,3-Dichloropropene
1.0 0.53 ug/L 11/22/23 07:22 1NDN-Propylbenzene
1.0 0.48 ug/L 11/22/23 07:22 1NDn-Butylbenzene
1.0 0.21 ug/L 11/22/23 07:22 1ND4-Chlorotoluene
1.0 0.39 ug/L 11/22/23 07:22 1ND1,4-Dichlorobenzene
1.0 0.40 ug/L 11/22/23 07:22 1NDEthylene Dibromide
2.0 0.17 ug/L 11/22/23 07:22 1ND3-Chloro-1-propene
1.0 0.54 ug/L 11/22/23 07:22 1ND1,2-Dichloroethane
20 4.5 ug/L 11/22/23 07:22 1NDAcrylonitrile
3.0 0.94 ug/L 11/22/23 07:22 1NDVinyl acetate
5.0 0.98 ug/L 11/22/23 07:22 1ND4-Methyl-2-pentanone (MIBK)
1.0 0.37 ug/L 11/22/23 07:22 1ND1,3,5-Trimethylbenzene
1.0 0.40 ug/L 11/22/23 07:22 1NDBromobenzene
1.0 0.31 ug/L 11/22/23 07:22 1NDMethylcyclohexane
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Client Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued)
Lab Sample ID: 280-184418-4Client Sample ID: DUP-01
Matrix: WaterDate Collected: 11/09/23 00:00
Date Received: 11/10/23 09:50
RL MDL
ND 1.0 0.32 ug/L 11/22/23 07:22 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Toluene
1.0 0.42 ug/L 11/22/23 07:22 1NDChlorobenzene
7.0 2.0 ug/L 11/22/23 07:22 1NDTetrahydrofuran
2.0 0.16 ug/L 11/22/23 07:22 1NDHexane
1.0 0.44 ug/L 11/22/23 07:22 1NDCyclohexane
1.0 0.58 ug/L 11/22/23 07:22 1ND1,2,4-Trichlorobenzene
2.0 0.62 ug/L 11/22/23 07:22 1NDChlorodibromomethane
1.0 0.40 ug/L 11/22/23 07:22 10.74 JTetrachloroethene
1.0 0.45 ug/L 11/22/23 07:22 1NDsec-Butylbenzene
1.0 0.38 ug/L 11/22/23 07:22 1ND1,3-Dichloropropane
1.0 0.32 ug/L 11/22/23 07:22 16.0cis-1,2-Dichloroethene
1.0 0.37 ug/L 11/22/23 07:22 1NDtrans-1,2-Dichloroethene
5.0 0.25 ug/L 11/22/23 07:22 1NDMethyl tert-butyl ether
2.0 0.36 ug/L 11/22/23 07:22 1NDm-Xylene & p-Xylene
1.0 0.33 ug/L 11/22/23 07:22 1ND1,3-Dichlorobenzene
1.0 0.57 ug/L 11/22/23 07:22 1NDCarbon tetrachloride
1.0 0.42 ug/L 11/22/23 07:22 1ND1,1-Dichloropropene
5.0 1.7 ug/L 11/22/23 07:22 1ND2-Hexanone
1.0 0.38 ug/L 11/22/23 07:22 1ND2,2-Dichloropropane
2.0 0.35 ug/L 11/22/23 07:22 10.99 JEthyl ether
1.0 0.58 ug/L 11/22/23 07:22 1ND1,1,1,2-Tetrachloroethane
15 6.6 ug/L 11/22/23 07:22 1NDAcetone
1.0 0.36 ug/L 11/22/23 07:22 1NDChloroform
1.0 0.31 ug/L 11/22/23 07:22 1NDBenzene
1.0 0.39 ug/L 11/22/23 07:22 1ND1,1,1-Trichloroethane
5.0 2.4 ug/L 11/22/23 07:22 1NDBromomethane
2.0 0.75 ug/L 11/22/23 07:22 1NDChloromethane
5.0 2.6 ug/L 11/22/23 07:22 1NDIodomethane
1.0 0.34 ug/L 11/22/23 07:22 1NDDibromomethane
1.0 0.40 ug/L 11/22/23 07:22 1NDChlorobromomethane
4.0 1.4 ug/L 11/22/23 07:22 1NDChloroethane
2.0 0.51 ug/L 11/22/23 07:22 11.7 JVinyl chloride
2.0 0.94 ug/L 11/22/23 07:22 1NDMethylene Chloride
2.0 0.63 ug/L 11/22/23 07:22 11.5 JCarbon disulfide
2.0 1.2 ug/L 11/22/23 07:22 1NDBromoform
1.0 0.39 ug/L 11/22/23 07:22 1NDDichlorobromomethane
1.0 0.22 ug/L 11/22/23 07:22 1251,1-Dichloroethane
1.0 0.23 ug/L 11/22/23 07:22 1421,1-Dichloroethene
2.0 0.57 ug/L 11/22/23 07:22 1NDTrichlorofluoromethane
3.0 0.96 ug/L 11/22/23 07:22 1NDDichlorodifluoromethane
3.0 0.73 ug/L 11/22/23 07:22 1ND1,1,2-Trichloro-1,2,2-trifluoroethane
1.0 0.52 ug/L 11/22/23 07:22 1ND1,2-Dichloropropane
15 6.0 ug/L 11/22/23 07:22 1ND2-Butanone (MEK)
1.0 0.27 ug/L 11/22/23 07:22 1ND1,1,2-Trichloroethane
1.0 0.30 ug/L 11/22/23 07:22 12.9Trichloroethene
5.0 1.6 ug/L 11/22/23 07:22 1NDMethyl acetate
1.0 0.21 ug/L 11/22/23 07:22 1ND1,1,2,2-Tetrachloroethane
2.0 0.70 ug/L 11/22/23 07:22 1ND1,2,3-Trichlorobenzene
2.0 1.2 ug/L 11/22/23 07:22 1NDHexachlorobutadiene
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Client Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued)
Lab Sample ID: 280-184418-4Client Sample ID: DUP-01
Matrix: WaterDate Collected: 11/09/23 00:00
Date Received: 11/10/23 09:50
RL MDL
ND 2.0 0.63 ug/L 11/22/23 07:22 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Naphthalene
1.0 0.33 ug/L 11/22/23 07:22 1NDo-Xylene
1.0 0.34 ug/L 11/22/23 07:22 1ND2-Chlorotoluene
1.0 0.37 ug/L 11/22/23 07:22 1ND1,2-Dichlorobenzene
1.0 0.15 ug/L 11/22/23 07:22 1ND1,2,4-Trimethylbenzene
5.0 1.8 ug/L 11/22/23 07:22 1ND1,2-Dibromo-3-Chloropropane
2.5 0.86 ug/L 11/22/23 07:22 1ND1,2,3-Trichloropropane
3.0 0.86 ug/L 11/22/23 07:22 1NDEthyl methacrylate
1.0 0.42 ug/L 11/22/23 07:22 1NDtert-Butylbenzene
1.0 0.36 ug/L 11/22/23 07:22 1NDIsopropylbenzene
1.0 0.43 ug/L 11/22/23 07:22 1ND4-Isopropyltoluene
1.0 0.33 ug/L 11/22/23 07:22 1NDXylenes, Total
1.0 0.32 ug/L 11/22/23 07:22 16.01,2-Dichloroethene, Total
2.0 0.63 ug/L 11/22/23 07:22 1ND1,3-Dichloropropene, Total
1.0 0.36 ug/L 11/22/23 07:22 1NDTrihalomethanes, Total
1.0 0.30 ug/L 11/22/23 07:22 1NDTotal BTEX
1,2-Dichloroethane-d4 (Surr)115 70 -127 11/22/23 07:22 1
Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery
Dibromofluoromethane (Surr)112 11/22/23 07:22 177-120
Toluene-d8 (Surr)98 11/22/23 07:22 180-125
4-Bromofluorobenzene (Surr)97 11/22/23 07:22 178-120
Lab Sample ID: 280-184418-5Client Sample ID: TRIP BLANK
Matrix: WaterDate Collected: 11/09/23 00:00
Date Received: 11/10/23 09:50
RL MDL
ND 1.0 0.30 ug/L 11/21/23 18:21 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Ethylbenzene
1.0 0.36 ug/L 11/21/23 18:21 1NDStyrene
2.0 0.63 ug/L 11/21/23 18:21 1NDcis-1,3-Dichloropropene
2.0 0.65 ug/L 11/21/23 18:21 1NDtrans-1,3-Dichloropropene
1.0 0.53 ug/L 11/21/23 18:21 1NDN-Propylbenzene
1.0 0.48 ug/L 11/21/23 18:21 1NDn-Butylbenzene
1.0 0.21 ug/L 11/21/23 18:21 1ND4-Chlorotoluene
1.0 0.39 ug/L 11/21/23 18:21 1ND1,4-Dichlorobenzene
1.0 0.40 ug/L 11/21/23 18:21 1NDEthylene Dibromide
2.0 0.17 ug/L 11/21/23 18:21 1ND3-Chloro-1-propene
1.0 0.54 ug/L 11/21/23 18:21 1ND1,2-Dichloroethane
20 4.5 ug/L 11/21/23 18:21 1NDAcrylonitrile
3.0 0.94 ug/L 11/21/23 18:21 1NDVinyl acetate
5.0 0.98 ug/L 11/21/23 18:21 1ND4-Methyl-2-pentanone (MIBK)
1.0 0.37 ug/L 11/21/23 18:21 1ND1,3,5-Trimethylbenzene
1.0 0.40 ug/L 11/21/23 18:21 1NDBromobenzene
1.0 0.31 ug/L 11/21/23 18:21 1NDMethylcyclohexane
1.0 0.32 ug/L 11/21/23 18:21 1NDToluene
1.0 0.42 ug/L 11/21/23 18:21 1NDChlorobenzene
7.0 2.0 ug/L 11/21/23 18:21 12.1 JTetrahydrofuran
2.0 0.16 ug/L 11/21/23 18:21 1NDHexane
1.0 0.44 ug/L 11/21/23 18:21 1NDCyclohexane
1.0 0.58 ug/L 11/21/23 18:21 1ND1,2,4-Trichlorobenzene
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Client Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued)
Lab Sample ID: 280-184418-5Client Sample ID: TRIP BLANK
Matrix: WaterDate Collected: 11/09/23 00:00
Date Received: 11/10/23 09:50
RL MDL
ND 2.0 0.62 ug/L 11/21/23 18:21 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Chlorodibromomethane
1.0 0.40 ug/L 11/21/23 18:21 1NDTetrachloroethene
1.0 0.45 ug/L 11/21/23 18:21 1NDsec-Butylbenzene
1.0 0.38 ug/L 11/21/23 18:21 1ND1,3-Dichloropropane
1.0 0.32 ug/L 11/21/23 18:21 1NDcis-1,2-Dichloroethene
1.0 0.37 ug/L 11/21/23 18:21 1NDtrans-1,2-Dichloroethene
5.0 0.25 ug/L 11/21/23 18:21 1NDMethyl tert-butyl ether
2.0 0.36 ug/L 11/21/23 18:21 1NDm-Xylene & p-Xylene
1.0 0.33 ug/L 11/21/23 18:21 1ND1,3-Dichlorobenzene
1.0 0.57 ug/L 11/21/23 18:21 1NDCarbon tetrachloride
1.0 0.42 ug/L 11/21/23 18:21 1ND1,1-Dichloropropene
5.0 1.7 ug/L 11/21/23 18:21 1ND2-Hexanone
1.0 0.38 ug/L 11/21/23 18:21 1ND2,2-Dichloropropane
2.0 0.35 ug/L 11/21/23 18:21 1NDEthyl ether
1.0 0.58 ug/L 11/21/23 18:21 1ND1,1,1,2-Tetrachloroethane
15 6.6 ug/L 11/21/23 18:21 1NDAcetone
1.0 0.36 ug/L 11/21/23 18:21 1NDChloroform
1.0 0.31 ug/L 11/21/23 18:21 1NDBenzene
1.0 0.39 ug/L 11/21/23 18:21 1ND1,1,1-Trichloroethane
5.0 2.4 ug/L 11/21/23 18:21 1NDBromomethane
2.0 0.75 ug/L 11/21/23 18:21 1NDChloromethane
5.0 2.6 ug/L 11/21/23 18:21 1NDIodomethane
1.0 0.34 ug/L 11/21/23 18:21 1NDDibromomethane
1.0 0.40 ug/L 11/21/23 18:21 1NDChlorobromomethane
4.0 1.4 ug/L 11/21/23 18:21 1NDChloroethane
2.0 0.51 ug/L 11/21/23 18:21 1NDVinyl chloride
2.0 0.94 ug/L 11/21/23 18:21 1NDMethylene Chloride
2.0 0.63 ug/L 11/21/23 18:21 1NDCarbon disulfide
2.0 1.2 ug/L 11/21/23 18:21 1NDBromoform
1.0 0.39 ug/L 11/21/23 18:21 1NDDichlorobromomethane
1.0 0.22 ug/L 11/21/23 18:21 1ND1,1-Dichloroethane
1.0 0.23 ug/L 11/21/23 18:21 1ND1,1-Dichloroethene
2.0 0.57 ug/L 11/21/23 18:21 1NDTrichlorofluoromethane
3.0 0.96 ug/L 11/21/23 18:21 1NDDichlorodifluoromethane
3.0 0.73 ug/L 11/21/23 18:21 1ND1,1,2-Trichloro-1,2,2-trifluoroethane
1.0 0.52 ug/L 11/21/23 18:21 1ND1,2-Dichloropropane
15 6.0 ug/L 11/21/23 18:21 1ND2-Butanone (MEK)
1.0 0.27 ug/L 11/21/23 18:21 1ND1,1,2-Trichloroethane
1.0 0.30 ug/L 11/21/23 18:21 1NDTrichloroethene
5.0 1.6 ug/L 11/21/23 18:21 1NDMethyl acetate
1.0 0.21 ug/L 11/21/23 18:21 1ND1,1,2,2-Tetrachloroethane
2.0 0.70 ug/L 11/21/23 18:21 1ND1,2,3-Trichlorobenzene
2.0 1.2 ug/L 11/21/23 18:21 1NDHexachlorobutadiene
2.0 0.63 ug/L 11/21/23 18:21 1NDNaphthalene
1.0 0.33 ug/L 11/21/23 18:21 1NDo-Xylene
1.0 0.34 ug/L 11/21/23 18:21 1ND2-Chlorotoluene
1.0 0.37 ug/L 11/21/23 18:21 1ND1,2-Dichlorobenzene
1.0 0.15 ug/L 11/21/23 18:21 1ND1,2,4-Trimethylbenzene
5.0 1.8 ug/L 11/21/23 18:21 1ND1,2-Dibromo-3-Chloropropane
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Client Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued)
Lab Sample ID: 280-184418-5Client Sample ID: TRIP BLANK
Matrix: WaterDate Collected: 11/09/23 00:00
Date Received: 11/10/23 09:50
RL MDL
ND 2.5 0.86 ug/L 11/21/23 18:21 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
1,2,3-Trichloropropane
3.0 0.86 ug/L 11/21/23 18:21 1NDEthyl methacrylate
1.0 0.42 ug/L 11/21/23 18:21 1NDtert-Butylbenzene
1.0 0.36 ug/L 11/21/23 18:21 1NDIsopropylbenzene
1.0 0.43 ug/L 11/21/23 18:21 1ND4-Isopropyltoluene
1.0 0.33 ug/L 11/21/23 18:21 1NDXylenes, Total
1.0 0.32 ug/L 11/21/23 18:21 1ND1,2-Dichloroethene, Total
2.0 0.63 ug/L 11/21/23 18:21 1ND1,3-Dichloropropene, Total
1.0 0.36 ug/L 11/21/23 18:21 1NDTrihalomethanes, Total
1.0 0.30 ug/L 11/21/23 18:21 1NDTotal BTEX
1,2-Dichloroethane-d4 (Surr)113 70 -127 11/21/23 18:21 1
Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery
Dibromofluoromethane (Surr)109 11/21/23 18:21 177-120
Toluene-d8 (Surr)102 11/21/23 18:21 180-125
4-Bromofluorobenzene (Surr)98 11/21/23 18:21 178-120
Method: SW846 6020B - Metals (ICP/MS) - Dissolved
Lab Sample ID: 280-184418-2Client Sample ID: MW-4
Matrix: WaterDate Collected: 11/09/23 12:25
Date Received: 11/10/23 09:50
RL MDL
600 3.0 0.83 ug/L 11/17/23 08:58 11/19/23 13:18 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Nickel
Lab Sample ID: 280-184418-3Client Sample ID: MW-5R
Matrix: WaterDate Collected: 11/09/23 13:35
Date Received: 11/10/23 09:50
RL MDL
1.6 J 3.0 0.83 ug/L 11/17/23 08:58 11/19/23 13:21 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Nickel
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Surrogate Summary
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS
Prep Type: Total/NAMatrix: Water
Lab Sample ID Client Sample ID (70-127)(77-120)(80-125)(78-120)
DCA DBFM TOL BFB
113 112 100 99280-184418-1
Percent Surrogate Recovery (Acceptance Limits)
MW-2
114 111 100 95280-184418-2 MW-4
112 110 100 95280-184418-3 MW-5R
115 112 98 97280-184418-4 DUP-01
113 109 102 98280-184418-5 TRIP BLANK
113 112 101 96LCS 280-634903/4 Lab Control Sample
112 110 101 97LCS 280-634924/4 Lab Control Sample
113 110 101 97LCSD 280-634903/5 Lab Control Sample Dup
112 109 99 98LCSD 280-634924/5 Lab Control Sample Dup
111 109 100 98MB 280-634903/9 Method Blank
111 111 99 96MB 280-634924/9 Method Blank
Surrogate Legend
DCA = 1,2-Dichloroethane-d4 (Surr)
DBFM = Dibromofluoromethane (Surr)
TOL = Toluene-d8 (Surr)
BFB = 4-Bromofluorobenzene (Surr)
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS
Client Sample ID: Method BlankLab Sample ID: MB 280-634903/9
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634903
RL MDL
Ethylbenzene ND 1.0 0.30 ug/L 11/21/23 16:56 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResultQualifier
ND 0.361.0 ug/L 11/21/23 16:56 1Styrene
ND 0.632.0 ug/L 11/21/23 16:56 1cis-1,3-Dichloropropene
ND 0.652.0 ug/L 11/21/23 16:56 1trans-1,3-Dichloropropene
ND 0.531.0 ug/L 11/21/23 16:56 1N-Propylbenzene
ND 0.481.0 ug/L 11/21/23 16:56 1n-Butylbenzene
ND 0.211.0 ug/L 11/21/23 16:56 14-Chlorotoluene
ND 0.391.0 ug/L 11/21/23 16:56 11,4-Dichlorobenzene
ND 0.401.0 ug/L 11/21/23 16:56 1Ethylene Dibromide
ND 0.172.0 ug/L 11/21/23 16:56 13-Chloro-1-propene
ND 0.541.0 ug/L 11/21/23 16:56 11,2-Dichloroethane
ND 4.520 ug/L 11/21/23 16:56 1Acrylonitrile
ND 0.943.0 ug/L 11/21/23 16:56 1Vinyl acetate
ND 0.985.0 ug/L 11/21/23 16:56 14-Methyl-2-pentanone (MIBK)
ND 0.371.0 ug/L 11/21/23 16:56 11,3,5-Trimethylbenzene
ND 0.401.0 ug/L 11/21/23 16:56 1Bromobenzene
ND 0.311.0 ug/L 11/21/23 16:56 1Methylcyclohexane
ND 0.321.0 ug/L 11/21/23 16:56 1Toluene
ND 0.421.0 ug/L 11/21/23 16:56 1Chlorobenzene
ND 2.07.0 ug/L 11/21/23 16:56 1Tetrahydrofuran
ND 0.162.0 ug/L 11/21/23 16:56 1Hexane
ND 0.441.0 ug/L 11/21/23 16:56 1Cyclohexane
ND 0.581.0 ug/L 11/21/23 16:56 11,2,4-Trichlorobenzene
ND 0.622.0 ug/L 11/21/23 16:56 1Chlorodibromomethane
ND 0.401.0 ug/L 11/21/23 16:56 1Tetrachloroethene
ND 0.451.0 ug/L 11/21/23 16:56 1sec-Butylbenzene
ND 0.381.0 ug/L 11/21/23 16:56 11,3-Dichloropropane
ND 0.321.0 ug/L 11/21/23 16:56 1cis-1,2-Dichloroethene
ND 0.371.0 ug/L 11/21/23 16:56 1trans-1,2-Dichloroethene
ND 0.255.0 ug/L 11/21/23 16:56 1Methyl tert-butyl ether
ND 0.362.0 ug/L 11/21/23 16:56 1m-Xylene & p-Xylene
ND 0.331.0 ug/L 11/21/23 16:56 11,3-Dichlorobenzene
ND 0.571.0 ug/L 11/21/23 16:56 1Carbon tetrachloride
ND 0.421.0 ug/L 11/21/23 16:56 11,1-Dichloropropene
ND 1.75.0 ug/L 11/21/23 16:56 12-Hexanone
ND 0.381.0 ug/L 11/21/23 16:56 12,2-Dichloropropane
ND 0.352.0 ug/L 11/21/23 16:56 1Ethyl ether
ND 0.581.0 ug/L 11/21/23 16:56 11,1,1,2-Tetrachloroethane
11.9 J 6.615 ug/L 11/21/23 16:56 1Acetone
ND 0.361.0 ug/L 11/21/23 16:56 1Chloroform
ND 0.311.0 ug/L 11/21/23 16:56 1Benzene
ND 0.391.0 ug/L 11/21/23 16:56 11,1,1-Trichloroethane
ND 2.45.0 ug/L 11/21/23 16:56 1Bromomethane
ND 0.752.0 ug/L 11/21/23 16:56 1Chloromethane
ND 2.65.0 ug/L 11/21/23 16:56 1Iodomethane
ND 0.341.0 ug/L 11/21/23 16:56 1Dibromomethane
ND 0.401.0 ug/L 11/21/23 16:56 1Chlorobromomethane
ND 1.44.0 ug/L 11/21/23 16:56 1Chloroethane
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Method BlankLab Sample ID: MB 280-634903/9
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634903
RL MDL
Vinyl chloride ND 2.0 0.51 ug/L 11/21/23 16:56 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResultQualifier
ND 0.942.0 ug/L 11/21/23 16:56 1Methylene Chloride
ND 0.632.0 ug/L 11/21/23 16:56 1Carbon disulfide
ND 1.22.0 ug/L 11/21/23 16:56 1Bromoform
ND 0.391.0 ug/L 11/21/23 16:56 1Dichlorobromomethane
ND 0.221.0 ug/L 11/21/23 16:56 11,1-Dichloroethane
ND 0.231.0 ug/L 11/21/23 16:56 11,1-Dichloroethene
ND 0.572.0 ug/L 11/21/23 16:56 1Trichlorofluoromethane
ND 0.963.0 ug/L 11/21/23 16:56 1Dichlorodifluoromethane
ND 0.733.0 ug/L 11/21/23 16:56 11,1,2-Trichloro-1,2,2-trifluoroethane
ND 0.521.0 ug/L 11/21/23 16:56 11,2-Dichloropropane
ND 6.015 ug/L 11/21/23 16:56 12-Butanone (MEK)
ND 0.271.0 ug/L 11/21/23 16:56 11,1,2-Trichloroethane
ND 0.301.0 ug/L 11/21/23 16:56 1Trichloroethene
ND 1.65.0 ug/L 11/21/23 16:56 1Methyl acetate
ND 0.211.0 ug/L 11/21/23 16:56 11,1,2,2-Tetrachloroethane
ND 0.702.0 ug/L 11/21/23 16:56 11,2,3-Trichlorobenzene
ND 1.22.0 ug/L 11/21/23 16:56 1Hexachlorobutadiene
ND 0.632.0 ug/L 11/21/23 16:56 1Naphthalene
ND 0.331.0 ug/L 11/21/23 16:56 1o-Xylene
ND 0.341.0 ug/L 11/21/23 16:56 12-Chlorotoluene
ND 0.371.0 ug/L 11/21/23 16:56 11,2-Dichlorobenzene
ND 0.151.0 ug/L 11/21/23 16:56 11,2,4-Trimethylbenzene
ND 1.85.0 ug/L 11/21/23 16:56 11,2-Dibromo-3-Chloropropane
ND 0.862.5 ug/L 11/21/23 16:56 11,2,3-Trichloropropane
ND 0.863.0 ug/L 11/21/23 16:56 1Ethyl methacrylate
ND 0.421.0 ug/L 11/21/23 16:56 1tert-Butylbenzene
ND 0.361.0 ug/L 11/21/23 16:56 1Isopropylbenzene
ND 0.431.0 ug/L 11/21/23 16:56 14-Isopropyltoluene
ND 0.331.0 ug/L 11/21/23 16:56 1Xylenes, Total
ND 0.321.0 ug/L 11/21/23 16:56 11,2-Dichloroethene, Total
ND 0.632.0 ug/L 11/21/23 16:56 11,3-Dichloropropene, Total
ND 0.361.0 ug/L 11/21/23 16:56 1Trihalomethanes, Total
ND 0.301.0 ug/L 11/21/23 16:56 1Total BTEX
1,2-Dichloroethane-d4 (Surr)111 70 -127 11/21/23 16:56 1
MB MB
Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery
109 11/21/23 16:56 1Dibromofluoromethane (Surr)77 -120
100 11/21/23 16:56 1Toluene-d8 (Surr)80 -125
98 11/21/23 16:56 14-Bromofluorobenzene (Surr)78 -120
Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-634903/4
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634903
Ethylbenzene 50.0 47.3 ug/L 95 76 -121
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
Styrene 50.0 47.6 ug/L 95 79 -120
Eurofins Denver
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-634903/4
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634903
cis-1,3-Dichloropropene 50.0 48.3 ug/L 97 75 -120
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
trans-1,3-Dichloropropene 50.0 53.1 ug/L 106 66 -127
N-Propylbenzene 50.0 45.2 ug/L 90 73 -127
n-Butylbenzene 50.0 43.5 ug/L 87 69 -130
4-Chlorotoluene 50.0 47.3 ug/L 95 74 -124
1,4-Dichlorobenzene 50.0 48.1 ug/L 96 76 -119
Ethylene Dibromide 50.0 48.6 ug/L 97 81 -118
3-Chloro-1-propene 50.0 54.8 ug/L 110 57 -136
1,2-Dichloroethane 50.0 56.9 ug/L 114 61 -130
Acrylonitrile 500 571 ug/L 114 65 -133
Vinyl acetate 100 116 ug/L 116 61 -139
4-Methyl-2-pentanone (MIBK)200 213 ug/L 106 56 -135
1,3,5-Trimethylbenzene 50.0 45.3 ug/L 91 73 -127
Bromobenzene 50.0 50.4 ug/L 101 75 -122
Methylcyclohexane 50.0 47.8 ug/L 96 58 -136
Toluene 50.0 53.5 ug/L 107 68 -127
Chlorobenzene 50.0 47.7 ug/L 95 78 -118
Tetrahydrofuran 100 115 ug/L 115 50 -139
Hexane 50.0 44.1 ug/L 88 52 -139
Cyclohexane 50.0 51.8 ug/L 104 57 -134
1,2,4-Trichlorobenzene 50.0 47.7 ug/L 95 73 -124
Chlorodibromomethane 50.0 43.6 ug/L 87 71 -122
Tetrachloroethene 50.0 48.8 ug/L 98 72 -127
sec-Butylbenzene 50.0 44.3 ug/L 89 72 -127
1,3-Dichloropropane 50.0 50.7 ug/L 101 80 -118
cis-1,2-Dichloroethene 50.0 52.0 ug/L 104 69 -126
trans-1,2-Dichloroethene 50.0 49.4 ug/L 99 66 -129
Methyl tert-butyl ether 50.0 58.5 ug/L 117 70 -127
m-Xylene & p-Xylene 50.0 49.1 ug/L 98 76 -122
1,3-Dichlorobenzene 50.0 48.7 ug/L 97 76 -121
Carbon tetrachloride 50.0 48.5 ug/L 97 60 -133
1,1-Dichloropropene 50.0 55.2 ug/L 110 64 -133
2-Hexanone 200 186 ug/L 93 58 -134
2,2-Dichloropropane 50.0 52.6 ug/L 105 57 -140
Ethyl ether 50.0 54.6 ug/L 109 66 -129
1,1,1,2-Tetrachloroethane 50.0 46.6 ug/L 93 74 -121
Acetone 200 231 ug/L 116 50 -137
Chloroform 50.0 55.2 ug/L 110 68 -128
Benzene 50.0 55.1 ug/L 110 69 -126
1,1,1-Trichloroethane 50.0 53.4 ug/L 107 62 -132
Bromomethane 50.0 54.0 ug/L 108 25 -163
Chloromethane 50.0 57.6 ug/L 115 43 -142
Iodomethane 50.0 53.0 ug/L 106 37 -145
Dibromomethane 50.0 55.6 ug/L 111 68 -129
Chlorobromomethane 50.0 54.6 ug/L 109 71 -130
Chloroethane 50.0 59.0 ug/L 118 52 -144
Vinyl chloride 50.0 60.5 ug/L 121 53 -141
Methylene Chloride 50.0 54.4 ug/L 109 64 -128
Carbon disulfide 50.0 51.4 ug/L 103 56 -128
Eurofins Denver
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-634903/4
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634903
Bromoform 50.0 42.6 ug/L 85 57 -125
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
Dichlorobromomethane 50.0 51.2 ug/L 102 67 -126
1,1-Dichloroethane 50.0 54.6 ug/L 109 66 -130
1,1-Dichloroethene 50.0 53.2 ug/L 106 62 -130
Trichlorofluoromethane 50.0 57.3 ug/L 115 57 -144
Dichlorodifluoromethane 50.0 47.8 ug/L 96 26 -152
1,1,2-Trichloro-1,2,2-trifluoroetha
ne
50.0 54.7 ug/L 109 60 -137
1,2-Dichloropropane 50.0 54.1 ug/L 108 68 -127
2-Butanone (MEK)200 221 ug/L 110 53 -135
1,1,2-Trichloroethane 50.0 53.4 ug/L 107 72 -128
Trichloroethene 50.0 46.4 ug/L 93 70 -125
Methyl acetate 100 111 ug/L 111 59 -133
1,1,2,2-Tetrachloroethane 50.0 48.8 ug/L 98 72 -122
1,2,3-Trichlorobenzene 50.0 47.4 ug/L 95 70 -127
Hexachlorobutadiene 50.0 43.1 ug/L 86 69 -133
Naphthalene 50.0 48.1 ug/L 96 63 -129
o-Xylene 50.0 47.9 ug/L 96 77 -120
2-Chlorotoluene 50.0 46.5 ug/L 93 75 -123
1,2-Dichlorobenzene 50.0 47.8 ug/L 96 77 -121
1,2,4-Trimethylbenzene 50.0 46.0 ug/L 92 74 -124
1,2-Dibromo-3-Chloropropane 50.0 41.3 ug/L 83 58 -122
1,2,3-Trichloropropane 50.0 47.5 ug/L 95 74 -123
Ethyl methacrylate 50.0 46.9 ug/L 94 69 -126
tert-Butylbenzene 50.0 43.8 ug/L 88 72 -126
Isopropylbenzene 50.0 46.7 ug/L 93 70 -127
4-Isopropyltoluene 50.0 43.6 ug/L 87 74 -127
1,2-Dichloroethane-d4 (Surr)70 -127
Surrogate
113
LCS LCS
Qualifier Limits%Recovery
112Dibromofluoromethane (Surr)77 -120
101Toluene-d8 (Surr)80 -125
964-Bromofluorobenzene (Surr)78 -120
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-634903/5
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634903
Ethylbenzene 50.0 44.2 ug/L 88 76 -121 7 20
Analyte
LCSD LCSD
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits LimitRPD
RPD
Styrene 50.0 44.1 ug/L 88 79 -120 8 20
cis-1,3-Dichloropropene 50.0 45.1 ug/L 90 75 -120 7 20
trans-1,3-Dichloropropene 50.0 50.0 ug/L 100 66 -127 6 20
N-Propylbenzene 50.0 44.2 ug/L 88 73 -127 2 20
n-Butylbenzene 50.0 41.6 ug/L 83 69 -130 5 20
4-Chlorotoluene 50.0 46.2 ug/L 92 74 -124 2 20
1,4-Dichlorobenzene 50.0 45.4 ug/L 91 76 -119 6 20
Ethylene Dibromide 50.0 44.9 ug/L 90 81 -118 8 20
3-Chloro-1-propene 50.0 51.4 ug/L 103 57 -136 6 20
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-634903/5
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634903
1,2-Dichloroethane 50.0 53.0 ug/L 106 61 -130 7 20
Analyte
LCSD LCSD
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits LimitRPD
RPD
Acrylonitrile 500 525 ug/L 105 65 -133 8 20
Vinyl acetate 100 104 ug/L 104 61 -139 11 23
4-Methyl-2-pentanone (MIBK)200 190 ug/L 95 56 -135 11 20
1,3,5-Trimethylbenzene 50.0 44.9 ug/L 90 73 -127 1 20
Bromobenzene 50.0 48.4 ug/L 97 75 -122 4 20
Methylcyclohexane 50.0 45.1 ug/L 90 58 -136 6 21
Toluene 50.0 50.4 ug/L 101 68 -127 6 20
Chlorobenzene 50.0 45.1 ug/L 90 78 -118 6 20
Tetrahydrofuran 100 101 ug/L 101 50 -139 13 20
Hexane 50.0 41.8 ug/L 84 52 -139 5 23
Cyclohexane 50.0 49.3 ug/L 99 57 -134 5 32
1,2,4-Trichlorobenzene 50.0 43.9 ug/L 88 73 -124 8 20
Chlorodibromomethane 50.0 39.6 ug/L 79 71 -122 9 20
Tetrachloroethene 50.0 46.1 ug/L 92 72 -127 6 20
sec-Butylbenzene 50.0 42.9 ug/L 86 72 -127 3 20
1,3-Dichloropropane 50.0 46.8 ug/L 94 80 -118 8 20
cis-1,2-Dichloroethene 50.0 49.3 ug/L 99 69 -126 5 20
trans-1,2-Dichloroethene 50.0 46.9 ug/L 94 66 -129 5 20
Methyl tert-butyl ether 50.0 54.2 ug/L 108 70 -127 8 20
m-Xylene & p-Xylene 50.0 46.5 ug/L 93 76 -122 5 20
1,3-Dichlorobenzene 50.0 45.9 ug/L 92 76 -121 6 20
Carbon tetrachloride 50.0 45.9 ug/L 92 60 -133 5 20
1,1-Dichloropropene 50.0 52.2 ug/L 104 64 -133 6 20
2-Hexanone 200 164 ug/L 82 58 -134 12 21
2,2-Dichloropropane 50.0 48.9 ug/L 98 57 -140 7 22
Ethyl ether 50.0 49.8 ug/L 100 66 -129 9 20
1,1,1,2-Tetrachloroethane 50.0 44.0 ug/L 88 74 -121 6 20
Acetone 200 213 ug/L 107 50 -137 8 21
Chloroform 50.0 51.4 ug/L 103 68 -128 7 20
Benzene 50.0 52.2 ug/L 104 69 -126 5 20
1,1,1-Trichloroethane 50.0 50.5 ug/L 101 62 -132 6 20
Bromomethane 50.0 47.7 ug/L 95 25 -163 12 40
Chloromethane 50.0 52.6 ug/L 105 43 -142 9 20
Iodomethane 50.0 48.4 ug/L 97 37 -145 9 38
Dibromomethane 50.0 51.6 ug/L 103 68 -129 7 20
Chlorobromomethane 50.0 51.2 ug/L 102 71 -130 6 20
Chloroethane 50.0 52.5 ug/L 105 52 -144 12 30
Vinyl chloride 50.0 53.1 ug/L 106 53 -141 13 25
Methylene Chloride 50.0 51.0 ug/L 102 64 -128 6 20
Carbon disulfide 50.0 49.2 ug/L 98 56 -128 4 20
Bromoform 50.0 38.6 ug/L 77 57 -125 10 20
Dichlorobromomethane 50.0 47.7 ug/L 95 67 -126 7 20
1,1-Dichloroethane 50.0 51.7 ug/L 103 66 -130 6 20
1,1-Dichloroethene 50.0 49.6 ug/L 99 62 -130 7 21
Trichlorofluoromethane 50.0 52.5 ug/L 105 57 -144 9 28
Dichlorodifluoromethane 50.0 42.5 ug/L 85 26 -152 12 21
1,1,2-Trichloro-1,2,2-trifluoroetha
ne
50.0 51.5 ug/L 103 60 -137 6 23
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-634903/5
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634903
1,2-Dichloropropane 50.0 51.1 ug/L 102 68 -127 6 20
Analyte
LCSD LCSD
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits LimitRPD
RPD
2-Butanone (MEK)200 198 ug/L 99 53 -135 11 20
1,1,2-Trichloroethane 50.0 50.1 ug/L 100 72 -128 6 20
Trichloroethene 50.0 43.9 ug/L 88 70 -125 6 20
Methyl acetate 100 101 ug/L 101 59 -133 9 20
1,1,2,2-Tetrachloroethane 50.0 46.6 ug/L 93 72 -122 4 20
1,2,3-Trichlorobenzene 50.0 43.3 ug/L 87 70 -127 9 20
Hexachlorobutadiene 50.0 42.0 ug/L 84 69 -133 3 20
Naphthalene 50.0 42.4 ug/L 85 63 -129 13 21
o-Xylene 50.0 45.0 ug/L 90 77 -120 6 20
2-Chlorotoluene 50.0 45.2 ug/L 90 75 -123 3 20
1,2-Dichlorobenzene 50.0 45.2 ug/L 90 77 -121 6 20
1,2,4-Trimethylbenzene 50.0 43.5 ug/L 87 74 -124 5 20
1,2-Dibromo-3-Chloropropane 50.0 37.2 ug/L 74 58 -122 10 21
1,2,3-Trichloropropane 50.0 47.3 ug/L 95 74 -123 0 20
Ethyl methacrylate 50.0 42.3 ug/L 85 69 -126 10 20
tert-Butylbenzene 50.0 41.8 ug/L 84 72 -126 5 20
Isopropylbenzene 50.0 43.7 ug/L 87 70 -127 7 20
4-Isopropyltoluene 50.0 41.8 ug/L 84 74 -127 4 20
1,2-Dichloroethane-d4 (Surr)70 -127
Surrogate
113
LCSD LCSD
Qualifier Limits%Recovery
110Dibromofluoromethane (Surr)77 -120
101Toluene-d8 (Surr)80 -125
974-Bromofluorobenzene (Surr)78 -120
Client Sample ID: Method BlankLab Sample ID: MB 280-634924/9
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634924
RL MDL
Ethylbenzene ND 1.0 0.30 ug/L 11/22/23 05:17 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResultQualifier
ND 0.361.0 ug/L 11/22/23 05:17 1Styrene
ND 0.632.0 ug/L 11/22/23 05:17 1cis-1,3-Dichloropropene
ND 0.652.0 ug/L 11/22/23 05:17 1trans-1,3-Dichloropropene
ND 0.531.0 ug/L 11/22/23 05:17 1N-Propylbenzene
ND 0.481.0 ug/L 11/22/23 05:17 1n-Butylbenzene
ND 0.211.0 ug/L 11/22/23 05:17 14-Chlorotoluene
ND 0.391.0 ug/L 11/22/23 05:17 11,4-Dichlorobenzene
ND 0.401.0 ug/L 11/22/23 05:17 1Ethylene Dibromide
ND 0.172.0 ug/L 11/22/23 05:17 13-Chloro-1-propene
ND 0.541.0 ug/L 11/22/23 05:17 11,2-Dichloroethane
ND 4.520 ug/L 11/22/23 05:17 1Acrylonitrile
ND 0.943.0 ug/L 11/22/23 05:17 1Vinyl acetate
ND 0.985.0 ug/L 11/22/23 05:17 14-Methyl-2-pentanone (MIBK)
ND 0.371.0 ug/L 11/22/23 05:17 11,3,5-Trimethylbenzene
ND 0.401.0 ug/L 11/22/23 05:17 1Bromobenzene
ND 0.311.0 ug/L 11/22/23 05:17 1Methylcyclohexane
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Method BlankLab Sample ID: MB 280-634924/9
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634924
RL MDL
Toluene ND 1.0 0.32 ug/L 11/22/23 05:17 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResultQualifier
ND 0.421.0 ug/L 11/22/23 05:17 1Chlorobenzene
ND 2.07.0 ug/L 11/22/23 05:17 1Tetrahydrofuran
ND 0.162.0 ug/L 11/22/23 05:17 1Hexane
ND 0.441.0 ug/L 11/22/23 05:17 1Cyclohexane
ND 0.581.0 ug/L 11/22/23 05:17 11,2,4-Trichlorobenzene
ND 0.622.0 ug/L 11/22/23 05:17 1Chlorodibromomethane
ND 0.401.0 ug/L 11/22/23 05:17 1Tetrachloroethene
ND 0.451.0 ug/L 11/22/23 05:17 1sec-Butylbenzene
ND 0.381.0 ug/L 11/22/23 05:17 11,3-Dichloropropane
ND 0.321.0 ug/L 11/22/23 05:17 1cis-1,2-Dichloroethene
ND 0.371.0 ug/L 11/22/23 05:17 1trans-1,2-Dichloroethene
ND 0.255.0 ug/L 11/22/23 05:17 1Methyl tert-butyl ether
ND 0.362.0 ug/L 11/22/23 05:17 1m-Xylene & p-Xylene
ND 0.331.0 ug/L 11/22/23 05:17 11,3-Dichlorobenzene
ND 0.571.0 ug/L 11/22/23 05:17 1Carbon tetrachloride
ND 0.421.0 ug/L 11/22/23 05:17 11,1-Dichloropropene
ND 1.75.0 ug/L 11/22/23 05:17 12-Hexanone
ND 0.381.0 ug/L 11/22/23 05:17 12,2-Dichloropropane
ND 0.352.0 ug/L 11/22/23 05:17 1Ethyl ether
ND 0.581.0 ug/L 11/22/23 05:17 11,1,1,2-Tetrachloroethane
ND 6.615 ug/L 11/22/23 05:17 1Acetone
ND 0.361.0 ug/L 11/22/23 05:17 1Chloroform
ND 0.311.0 ug/L 11/22/23 05:17 1Benzene
ND 0.391.0 ug/L 11/22/23 05:17 11,1,1-Trichloroethane
ND 2.45.0 ug/L 11/22/23 05:17 1Bromomethane
ND 0.752.0 ug/L 11/22/23 05:17 1Chloromethane
ND 2.65.0 ug/L 11/22/23 05:17 1Iodomethane
ND 0.341.0 ug/L 11/22/23 05:17 1Dibromomethane
ND 0.401.0 ug/L 11/22/23 05:17 1Chlorobromomethane
ND 1.44.0 ug/L 11/22/23 05:17 1Chloroethane
ND 0.512.0 ug/L 11/22/23 05:17 1Vinyl chloride
ND 0.942.0 ug/L 11/22/23 05:17 1Methylene Chloride
ND 0.632.0 ug/L 11/22/23 05:17 1Carbon disulfide
ND 1.22.0 ug/L 11/22/23 05:17 1Bromoform
ND 0.391.0 ug/L 11/22/23 05:17 1Dichlorobromomethane
ND 0.221.0 ug/L 11/22/23 05:17 11,1-Dichloroethane
ND 0.231.0 ug/L 11/22/23 05:17 11,1-Dichloroethene
ND 0.572.0 ug/L 11/22/23 05:17 1Trichlorofluoromethane
ND 0.963.0 ug/L 11/22/23 05:17 1Dichlorodifluoromethane
ND 0.733.0 ug/L 11/22/23 05:17 11,1,2-Trichloro-1,2,2-trifluoroethane
ND 0.521.0 ug/L 11/22/23 05:17 11,2-Dichloropropane
ND 6.015 ug/L 11/22/23 05:17 12-Butanone (MEK)
ND 0.271.0 ug/L 11/22/23 05:17 11,1,2-Trichloroethane
ND 0.301.0 ug/L 11/22/23 05:17 1Trichloroethene
ND 1.65.0 ug/L 11/22/23 05:17 1Methyl acetate
ND 0.211.0 ug/L 11/22/23 05:17 11,1,2,2-Tetrachloroethane
ND 0.702.0 ug/L 11/22/23 05:17 11,2,3-Trichlorobenzene
ND 1.22.0 ug/L 11/22/23 05:17 1Hexachlorobutadiene
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Method BlankLab Sample ID: MB 280-634924/9
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634924
RL MDL
Naphthalene ND 2.0 0.63 ug/L 11/22/23 05:17 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResultQualifier
ND 0.331.0 ug/L 11/22/23 05:17 1o-Xylene
ND 0.341.0 ug/L 11/22/23 05:17 12-Chlorotoluene
ND 0.371.0 ug/L 11/22/23 05:17 11,2-Dichlorobenzene
ND 0.151.0 ug/L 11/22/23 05:17 11,2,4-Trimethylbenzene
ND 1.85.0 ug/L 11/22/23 05:17 11,2-Dibromo-3-Chloropropane
ND 0.862.5 ug/L 11/22/23 05:17 11,2,3-Trichloropropane
ND 0.863.0 ug/L 11/22/23 05:17 1Ethyl methacrylate
ND 0.421.0 ug/L 11/22/23 05:17 1tert-Butylbenzene
ND 0.361.0 ug/L 11/22/23 05:17 1Isopropylbenzene
ND 0.431.0 ug/L 11/22/23 05:17 14-Isopropyltoluene
ND 0.331.0 ug/L 11/22/23 05:17 1Xylenes, Total
ND 0.321.0 ug/L 11/22/23 05:17 11,2-Dichloroethene, Total
ND 0.632.0 ug/L 11/22/23 05:17 11,3-Dichloropropene, Total
ND 0.361.0 ug/L 11/22/23 05:17 1Trihalomethanes, Total
ND 0.301.0 ug/L 11/22/23 05:17 1Total BTEX
1,2-Dichloroethane-d4 (Surr)111 70 -127 11/22/23 05:17 1
MB MB
Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery
111 11/22/23 05:17 1Dibromofluoromethane (Surr)77 -120
99 11/22/23 05:17 1Toluene-d8 (Surr)80 -125
96 11/22/23 05:17 14-Bromofluorobenzene (Surr)78 -120
Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-634924/4
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634924
Ethylbenzene 50.0 48.3 ug/L 97 76 -121
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
Styrene 50.0 48.8 ug/L 98 79 -120
cis-1,3-Dichloropropene 50.0 48.7 ug/L 97 75 -120
trans-1,3-Dichloropropene 50.0 53.4 ug/L 107 66 -127
N-Propylbenzene 50.0 44.7 ug/L 89 73 -127
n-Butylbenzene 50.0 43.2 ug/L 86 69 -130
4-Chlorotoluene 50.0 46.4 ug/L 93 74 -124
1,4-Dichlorobenzene 50.0 48.1 ug/L 96 76 -119
Ethylene Dibromide 50.0 48.5 ug/L 97 81 -118
3-Chloro-1-propene 50.0 53.6 ug/L 107 57 -136
1,2-Dichloroethane 50.0 56.3 ug/L 113 61 -130
Acrylonitrile 500 573 ug/L 115 65 -133
Vinyl acetate 100 114 ug/L 114 61 -139
4-Methyl-2-pentanone (MIBK)200 209 ug/L 105 56 -135
1,3,5-Trimethylbenzene 50.0 45.5 ug/L 91 73 -127
Bromobenzene 50.0 50.0 ug/L 100 75 -122
Methylcyclohexane 50.0 43.3 ug/L 87 58 -136
Toluene 50.0 53.0 ug/L 106 68 -127
Chlorobenzene 50.0 48.7 ug/L 97 78 -118
Tetrahydrofuran 100 110 ug/L 110 50 -139
Eurofins Denver
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-634924/4
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634924
Hexane 50.0 40.3 ug/L 81 52 -139
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
Cyclohexane 50.0 48.1 ug/L 96 57 -134
1,2,4-Trichlorobenzene 50.0 47.3 ug/L 95 73 -124
Chlorodibromomethane 50.0 44.0 ug/L 88 71 -122
Tetrachloroethene 50.0 48.0 ug/L 96 72 -127
sec-Butylbenzene 50.0 44.1 ug/L 88 72 -127
1,3-Dichloropropane 50.0 51.9 ug/L 104 80 -118
cis-1,2-Dichloroethene 50.0 51.6 ug/L 103 69 -126
trans-1,2-Dichloroethene 50.0 49.8 ug/L 100 66 -129
Methyl tert-butyl ether 50.0 58.2 ug/L 116 70 -127
m-Xylene & p-Xylene 50.0 50.4 ug/L 101 76 -122
1,3-Dichlorobenzene 50.0 49.1 ug/L 98 76 -121
Carbon tetrachloride 50.0 46.4 ug/L 93 60 -133
1,1-Dichloropropene 50.0 53.6 ug/L 107 64 -133
2-Hexanone 200 189 ug/L 95 58 -134
2,2-Dichloropropane 50.0 51.4 ug/L 103 57 -140
Ethyl ether 50.0 53.5 ug/L 107 66 -129
1,1,1,2-Tetrachloroethane 50.0 47.5 ug/L 95 74 -121
Acetone 200 227 ug/L 114 50 -137
Chloroform 50.0 54.5 ug/L 109 68 -128
Benzene 50.0 54.5 ug/L 109 69 -126
1,1,1-Trichloroethane 50.0 51.4 ug/L 103 62 -132
Bromomethane 50.0 45.7 ug/L 91 25 -163
Chloromethane 50.0 55.8 ug/L 112 43 -142
Iodomethane 50.0 50.5 ug/L 101 37 -145
Dibromomethane 50.0 55.3 ug/L 111 68 -129
Chlorobromomethane 50.0 55.2 ug/L 110 71 -130
Chloroethane 50.0 55.8 ug/L 112 52 -144
Vinyl chloride 50.0 57.9 ug/L 116 53 -141
Methylene Chloride 50.0 53.6 ug/L 107 64 -128
Carbon disulfide 50.0 51.5 ug/L 103 56 -128
Bromoform 50.0 43.2 ug/L 86 57 -125
Dichlorobromomethane 50.0 51.0 ug/L 102 67 -126
1,1-Dichloroethane 50.0 54.6 ug/L 109 66 -130
1,1-Dichloroethene 50.0 51.3 ug/L 103 62 -130
Trichlorofluoromethane 50.0 54.1 ug/L 108 57 -144
Dichlorodifluoromethane 50.0 43.0 ug/L 86 26 -152
1,1,2-Trichloro-1,2,2-trifluoroetha
ne
50.0 49.6 ug/L 99 60 -137
1,2-Dichloropropane 50.0 54.0 ug/L 108 68 -127
2-Butanone (MEK)200 223 ug/L 112 53 -135
1,1,2-Trichloroethane 50.0 53.8 ug/L 108 72 -128
Trichloroethene 50.0 46.8 ug/L 94 70 -125
Methyl acetate 100 111 ug/L 111 59 -133
1,1,2,2-Tetrachloroethane 50.0 49.6 ug/L 99 72 -122
1,2,3-Trichlorobenzene 50.0 46.3 ug/L 93 70 -127
Hexachlorobutadiene 50.0 42.3 ug/L 85 69 -133
Naphthalene 50.0 45.7 ug/L 91 63 -129
o-Xylene 50.0 47.9 ug/L 96 77 -120
Eurofins Denver
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-634924/4
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634924
2-Chlorotoluene 50.0 46.3 ug/L 93 75 -123
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
1,2-Dichlorobenzene 50.0 48.3 ug/L 97 77 -121
1,2,4-Trimethylbenzene 50.0 45.9 ug/L 92 74 -124
1,2-Dibromo-3-Chloropropane 50.0 41.3 ug/L 83 58 -122
1,2,3-Trichloropropane 50.0 49.6 ug/L 99 74 -123
Ethyl methacrylate 50.0 47.2 ug/L 94 69 -126
tert-Butylbenzene 50.0 43.3 ug/L 87 72 -126
Isopropylbenzene 50.0 46.0 ug/L 92 70 -127
4-Isopropyltoluene 50.0 43.4 ug/L 87 74 -127
1,2-Dichloroethane-d4 (Surr)70 -127
Surrogate
112
LCS LCS
Qualifier Limits%Recovery
110Dibromofluoromethane (Surr)77 -120
101Toluene-d8 (Surr)80 -125
974-Bromofluorobenzene (Surr)78 -120
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-634924/5
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634924
Ethylbenzene 50.0 46.9 ug/L 94 76 -121 3 20
Analyte
LCSD LCSD
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits LimitRPD
RPD
Styrene 50.0 47.8 ug/L 96 79 -120 2 20
cis-1,3-Dichloropropene 50.0 48.2 ug/L 96 75 -120 1 20
trans-1,3-Dichloropropene 50.0 53.4 ug/L 107 66 -127 0 20
N-Propylbenzene 50.0 46.4 ug/L 93 73 -127 4 20
n-Butylbenzene 50.0 44.3 ug/L 89 69 -130 3 20
4-Chlorotoluene 50.0 47.8 ug/L 96 74 -124 3 20
1,4-Dichlorobenzene 50.0 48.0 ug/L 96 76 -119 0 20
Ethylene Dibromide 50.0 47.6 ug/L 95 81 -118 2 20
3-Chloro-1-propene 50.0 56.2 ug/L 112 57 -136 5 20
1,2-Dichloroethane 50.0 57.5 ug/L 115 61 -130 2 20
Acrylonitrile 500 559 ug/L 112 65 -133 3 20
Vinyl acetate 100 113 ug/L 113 61 -139 1 23
4-Methyl-2-pentanone (MIBK)200 208 ug/L 104 56 -135 0 20
1,3,5-Trimethylbenzene 50.0 46.8 ug/L 94 73 -127 3 20
Bromobenzene 50.0 49.8 ug/L 100 75 -122 0 20
Methylcyclohexane 50.0 45.2 ug/L 90 58 -136 4 21
Toluene 50.0 53.8 ug/L 108 68 -127 1 20
Chlorobenzene 50.0 47.5 ug/L 95 78 -118 3 20
Tetrahydrofuran 100 107 ug/L 107 50 -139 3 20
Hexane 50.0 41.8 ug/L 84 52 -139 4 23
Cyclohexane 50.0 49.3 ug/L 99 57 -134 3 32
1,2,4-Trichlorobenzene 50.0 50.0 ug/L 100 73 -124 6 20
Chlorodibromomethane 50.0 42.2 ug/L 84 71 -122 4 20
Tetrachloroethene 50.0 48.4 ug/L 97 72 -127 1 20
sec-Butylbenzene 50.0 45.1 ug/L 90 72 -127 2 20
1,3-Dichloropropane 50.0 50.1 ug/L 100 80 -118 4 20
Eurofins Denver
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-634924/5
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634924
cis-1,2-Dichloroethene 50.0 52.2 ug/L 104 69 -126 1 20
Analyte
LCSD LCSD
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits LimitRPD
RPD
trans-1,2-Dichloroethene 50.0 50.1 ug/L 100 66 -129 1 20
Methyl tert-butyl ether 50.0 57.8 ug/L 116 70 -127 1 20
m-Xylene & p-Xylene 50.0 49.4 ug/L 99 76 -122 2 20
1,3-Dichlorobenzene 50.0 50.0 ug/L 100 76 -121 2 20
Carbon tetrachloride 50.0 48.2 ug/L 96 60 -133 4 20
1,1-Dichloropropene 50.0 54.3 ug/L 109 64 -133 1 20
2-Hexanone 200 181 ug/L 90 58 -134 5 21
2,2-Dichloropropane 50.0 52.5 ug/L 105 57 -140 2 22
Ethyl ether 50.0 53.3 ug/L 107 66 -129 0 20
1,1,1,2-Tetrachloroethane 50.0 46.8 ug/L 94 74 -121 1 20
Acetone 200 223 ug/L 112 50 -137 2 21
Chloroform 50.0 55.4 ug/L 111 68 -128 2 20
Benzene 50.0 55.6 ug/L 111 69 -126 2 20
1,1,1-Trichloroethane 50.0 53.9 ug/L 108 62 -132 5 20
Bromomethane 50.0 48.8 ug/L 98 25 -163 7 40
Chloromethane 50.0 56.9 ug/L 114 43 -142 2 20
Iodomethane 50.0 53.7 ug/L 107 37 -145 6 38
Dibromomethane 50.0 55.9 ug/L 112 68 -129 1 20
Chlorobromomethane 50.0 56.0 ug/L 112 71 -130 1 20
Chloroethane 50.0 57.4 ug/L 115 52 -144 3 30
Vinyl chloride 50.0 61.4 ug/L 123 53 -141 6 25
Methylene Chloride 50.0 54.6 ug/L 109 64 -128 2 20
Carbon disulfide 50.0 53.2 ug/L 106 56 -128 3 20
Bromoform 50.0 41.0 ug/L 82 57 -125 5 20
Dichlorobromomethane 50.0 50.5 ug/L 101 67 -126 1 20
1,1-Dichloroethane 50.0 55.2 ug/L 110 66 -130 1 20
1,1-Dichloroethene 50.0 51.7 ug/L 103 62 -130 1 21
Trichlorofluoromethane 50.0 57.2 ug/L 114 57 -144 6 28
Dichlorodifluoromethane 50.0 46.1 ug/L 92 26 -152 7 21
1,1,2-Trichloro-1,2,2-trifluoroetha
ne
50.0 52.3 ug/L 105 60 -137 5 23
1,2-Dichloropropane 50.0 55.5 ug/L 111 68 -127 3 20
2-Butanone (MEK)200 220 ug/L 110 53 -135 2 20
1,1,2-Trichloroethane 50.0 54.7 ug/L 109 72 -128 2 20
Trichloroethene 50.0 46.4 ug/L 93 70 -125 1 20
Methyl acetate 100 110 ug/L 110 59 -133 1 20
1,1,2,2-Tetrachloroethane 50.0 49.7 ug/L 99 72 -122 0 20
1,2,3-Trichlorobenzene 50.0 48.8 ug/L 98 70 -127 5 20
Hexachlorobutadiene 50.0 44.6 ug/L 89 69 -133 5 20
Naphthalene 50.0 49.2 ug/L 98 63 -129 7 21
o-Xylene 50.0 48.6 ug/L 97 77 -120 1 20
2-Chlorotoluene 50.0 47.5 ug/L 95 75 -123 2 20
1,2-Dichlorobenzene 50.0 49.0 ug/L 98 77 -121 1 20
1,2,4-Trimethylbenzene 50.0 46.6 ug/L 93 74 -124 1 20
1,2-Dibromo-3-Chloropropane 50.0 40.8 ug/L 82 58 -122 1 21
1,2,3-Trichloropropane 50.0 48.0 ug/L 96 74 -123 3 20
Ethyl methacrylate 50.0 46.2 ug/L 92 69 -126 2 20
tert-Butylbenzene 50.0 44.2 ug/L 88 72 -126 2 20
Eurofins Denver
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QC Sample Results
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
Method: 8260D - Volatile Organic Compounds by GC/MS (Continued)
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-634924/5
Matrix: Water Prep Type: Total/NA
Analysis Batch: 634924
Isopropylbenzene 50.0 46.8 ug/L 94 70 -127 2 20
Analyte
LCSD LCSD
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits LimitRPD
RPD
4-Isopropyltoluene 50.0 44.4 ug/L 89 74 -127 2 20
1,2-Dichloroethane-d4 (Surr)70 -127
Surrogate
112
LCSD LCSD
Qualifier Limits%Recovery
109Dibromofluoromethane (Surr)77 -120
99Toluene-d8 (Surr)80 -125
984-Bromofluorobenzene (Surr)78 -120
Method: 6020B - Metals (ICP/MS)
Client Sample ID: Method BlankLab Sample ID: MB 280-634284/1-A
Matrix: Water Prep Type: Total Recoverable
Analysis Batch: 634582 Prep Batch: 634284
RL MDL
Nickel ND 3.0 0.83 ug/L 11/17/23 08:58 11/19/23 12:17 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResultQualifier
Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-634284/2-A
Matrix: Water Prep Type: Total Recoverable
Analysis Batch: 634582 Prep Batch: 634284
Nickel 40.0 39.8 ug/L 100 85 -119
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
Eurofins Denver
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QC Association Summary
Job ID: 280-184418-1Client: Stantec Consulting Corporation
Project/Site: Northrop Grumman, Utah 193708049
GC/MS VOA
Analysis Batch: 634903
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
Water 8260D280-184418-2 MW-4 Total/NA
Water 8260D280-184418-3 MW-5R Total/NA
Water 8260D280-184418-5 TRIP BLANK Total/NA
Water 8260DMB 280-634903/9 Method Blank Total/NA
Water 8260DLCS 280-634903/4 Lab Control Sample Total/NA
Water 8260DLCSD 280-634903/5 Lab Control Sample Dup Total/NA
Analysis Batch: 634924
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
Water 8260D280-184418-1 MW-2 Total/NA
Water 8260D280-184418-4 DUP-01 Total/NA
Water 8260DMB 280-634924/9 Method Blank Total/NA
Water 8260DLCS 280-634924/4 Lab Control Sample Total/NA
Water 8260DLCSD 280-634924/5 Lab Control Sample Dup Total/NA
Metals
Prep Batch: 634284
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
Water 3005A280-184418-2 MW-4 Dissolved
Water 3005A280-184418-3 MW-5R Dissolved
Water 3005AMB 280-634284/1-A Method Blank Total Recoverable
Water 3005ALCS 280-634284/2-A Lab Control Sample Total Recoverable
Analysis Batch: 634582
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
Water 6020B 634284280-184418-2 MW-4 Dissolved
Water 6020B 634284280-184418-3 MW-5R Dissolved
Water 6020B 634284MB 280-634284/1-A Method Blank Total Recoverable
Water 6020B 634284LCS 280-634284/2-A Lab Control Sample Total Recoverable
Eurofins Denver
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Lab Chronicle
Client: Stantec Consulting Corporation Job ID: 280-184418-1
Project/Site: Northrop Grumman, Utah 193708049
Client Sample ID: MW-2 Lab Sample ID: 280-184418-1
Matrix: WaterDate Collected: 11/09/23 11:05
Date Received: 11/10/23 09:50
Analysis 8260D MD11/22/23 07:021 EET DEN634924
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Client Sample ID: MW-4 Lab Sample ID: 280-184418-2
Matrix: WaterDate Collected: 11/09/23 12:25
Date Received: 11/10/23 09:50
Analysis 8260D MD11/21/23 20:451 EET DEN634903
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Prep 3005A 634284 11/17/23 08:58 MSM EET DENDissolved50 mL 50 mL
Analysis 6020B 1 634582 11/19/23 13:18 LMT EET DENDissolved
Client Sample ID: MW-5R Lab Sample ID: 280-184418-3
Matrix: WaterDate Collected: 11/09/23 13:35
Date Received: 11/10/23 09:50
Analysis 8260D MD11/21/23 21:051 EET DEN634903
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Prep 3005A 634284 11/17/23 08:58 MSM EET DENDissolved50 mL 50 mL
Analysis 6020B 1 634582 11/19/23 13:21 LMT EET DENDissolved
Client Sample ID: DUP-01 Lab Sample ID: 280-184418-4
Matrix: WaterDate Collected: 11/09/23 00:00
Date Received: 11/10/23 09:50
Analysis 8260D MD11/22/23 07:221 EET DEN634924
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Client Sample ID: TRIP BLANK Lab Sample ID: 280-184418-5
Matrix: WaterDate Collected: 11/09/23 00:00
Date Received: 11/10/23 09:50
Analysis 8260D MD11/21/23 18:211 EET DEN634903
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Laboratory References:
EET DEN = Eurofins Denver, 4955 Yarrow Street, Arvada, CO 80002, TEL [phone]
Eurofins Denver
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Accreditation/Certification Summary
Client: Stantec Consulting Corporation Job ID: 280-184418-1
Project/Site: Northrop Grumman, Utah 193708049
Laboratory: Eurofins Denver
Unless otherwise noted, all analytes for this laboratory were covered under each accreditation/certification below.
Authority Program Identification Number Expiration Date
Utah NELAP CO000262019-11 07-31-24
The following analytes are included in this report, but the laboratory is not certified by the governing authority. This list may include analytes
for which the agency does not offer certification.
Analysis Method Prep Method Matrix Analyte
8260D Water 1,2-Dichloroethene, Total
8260D Water Xylenes, Total
Eurofins Denver
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Login Sample Receipt Checklist
Client: Stantec Consulting Corporation Job Number: 280-184418-1
Login Number: 184418
Question Answer Comment
Creator: Little, Matthew L
List Source: Eurofins Denver
List Number: 1
N/ARadioactivity wasn't checked or is </= background as measured by a survey
meter.
TrueThe cooler's custody seal, if present, is intact.
TrueSample custody seals, if present, are intact.
TrueThe cooler or samples do not appear to have been compromised or
tampered with.
TrueSamples were received on ice.
TrueCooler Temperature is acceptable.
TrueCooler Temperature is recorded.
TrueCOC is present.
TrueCOC is filled out in ink and legible.
TrueCOC is filled out with all pertinent information.
TrueIs the Field Sampler's name present on COC?
TrueThere are no discrepancies between the containers received and the COC.
TrueSamples are received within Holding Time (excluding tests with immediate
HTs)
TrueSample containers have legible labels.
TrueContainers are not broken or leaking.
TrueSample collection date/times are provided.
TrueAppropriate sample containers are used.
TrueSample bottles are completely filled.
N/ASample Preservation Verified.
TrueThere is sufficient vol. for all requested analyses, incl. any requested
MS/MSDs
TrueContainers requiring zero headspace have no headspace or bubble is
<6mm (1/4").
TrueMultiphasic samples are not present.
TrueSamples do not require splitting or compositing.
N/AResidual Chlorine Checked.
Eurofins Denver
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