MO-3724_9705_CA_RMR_202306302023

Intended for North Carolina Department of Environmental Quality Underground Storage Tank Section
Raleigh, North Carolina

Prepared by
Ramboll US Consulting, Inc. and REUS Geologists, P.C.

Date
June 2023

Prepared on Behalf of:
The Davey Tree Expert Company

SITE CLOSURE REPORT
6039 MCDANIEL LANE, CHARLOTTE,
NORTH CAROLINA

Incident No. 9705

© 2023 Ramboll

Doc ID / Version

Ramboll
4245 North Fairfax Drive
Suite 700
Arlington, VA 22203
USA

T [phone]
F [phone]
https://ramboll.com

SITE CLOSURE REPORT
6039 MCDANIEL LANE, CHARLOTTE, NORTH CAROLINA

Project name The Davey Tree Company, Charlotte, NC
Recipient North Carolina Department of Environmental Quality
Document type Site Closure Report
Date June 2023

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Contents
1. EXECUTIVE SUMMARY 2
2. INTRODUCTION 3
2.1 Organization of Report 3
3. APRIL 2023 GROUNDWATER MONITORING
RESULTS 4
3.1 Groundwater Gauging Results 4
3.2 Groundwater Sample Collection and Analysis 4
3.3 Groundwater Analytical Results 4
4. CONCLUSIONS AND REQUEST FOR CLOSURE 6
5. REFERENCES 7

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CERTIFICATION
I, Sarah Stoneking, a Licensed Geologist for REUS Geologists of North Carolina, PC, do certify that
the information contained in this report is correct and accurate to the best of my knowledge.

REUS Geologists of North Carolina, PC is licensed to practice geology in North Carolina. The
certification number of the company or corporation is 00080.

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1. EXECUTIVE SUMMARY
At the request of the North Carolina Department of Environmental Quality (NCDEQ) Underground
Storage Tank (UST) Section, and on behalf of The Davey Tree Expert Company, (“Davey”), REUS
Geologists of North Carolina, PC and Ramboll US Consulting, Inc. (collectively, “Ramboll”)
conducted supplemental soil remediation activities at the property located at 6039 McDaniel Lane,
Charlotte, Mecklenburg County, North Carolina (the “site”; Figure 1.1). The soil remediation
activities were conducted to further address Petroleum Release Incident No. 9705, relating to a
historical release of petroleum documented during UST closure activities at the site on October 6,
1992, and a more recently issued Notice of Regulatory Requirements (NORR) by NCDEQ on
February 8, 2022. Work was completed in accordance with the remediation plan issued by
Ramboll on August 11, 2022 and approved by NCDEQ on August 15, 2022. The 2022 remedial
activities included the collection of additional pre-remediation soil data to assist in pre-
characterizing soils for off-site disposal and to make visual observations regarding soil quality, the
excavation and off-site disposal of additional petroleum impacted soils at depth, the addition of
oxidant to the open excavation, site restoration activities, and the collection of two rounds of
post-remediation groundwater data. Approximately 824 tons of petroleum impacted soil was
excavated from the base of the excavation and disposed off-site. Clean overburden soils were
stockpiled and subsequently returned to the excavation. Prior to backfilling the excavation,
approximately 3,000 pounds (lbs.) of ORC-Advanced® and approximately 3,200 lbs. of
PersulfOx® were applied to the base of the excavation and mixed into soil using the excavator
bucket. Post excavation groundwater monitoring results indicate no constituents in groundwater
at concentrations exceeding the North Carolina Gross Contamination Levels (GCLs).

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2. INTRODUCTION
2.1 Organization of Report
Given the numerous activities performed at the site and the lengthy duration of site investigation
and remediation, this Site Closure Report does not seek to repeat information included in prior
submittals to NCDEQ, but rather, to focus on the recently completed activities. For ease, provided
below is a summary of key information requirements and the location where the required
information can be found.

UST Closure Requirement Report Section/Previous Report(s)
Site History and Characterization Comprehensive Site Assessment (CSA)
Addendum, Ramboll, 2022
Site Assessment Information Site Characterization Report, Froehling &
Robertson (F&R) Inc., 1992
CSA, F&R, 1994
Semi-Annual Monitoring Report, F&R, 1996-1999
Free Product Recovery Report, F&R, 2002
Groundwater Monitoring Report, F&R, 2004
CSA Addendum, Ramboll, 2022
Soil Remediation and First Post-Remediation
Groundwater Monitoring Event
Soil Cleanup Report, REUS Geologists, P.C., 2022
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3. APRIL 2023 GROUNDWATER MONITORING RESULTS
As specified within the August 2022 Remediation Plan, two rounds of post-remediation
groundwater monitoring were conducted at the site to document the effectiveness of the
supplemental soil remediation activities. The first round of groundwater monitoring results was
summarized in the Soil Cleanup Report dated December 2022. Summarized below, are the
second round of post-remediation groundwater monitoring results.

3.1 Groundwater Gauging Results
WSSI collected depth to water measurements at each of the monitoring wells (MW-1, RW-1R,
RW-2, MW-2, MW-3, MW-4A, RW-4, MW-5, MW-5A, MW-7A, MW-9, MW-9A, MW-10, and MW-
10A). An electronic oil-water interface probe was used to measure the depth to water below top
of the well casing to the nearest 0.01 foot and evaluate the potential presence of light non-
aqueous phase liquid (LNAPL or “free product”); no free product was detected. Depth to water
was observed to range from 26.45 to 30.93 feet below the top of the well casings with elevations
ranging from 779.90 to 783.90 feet above mean sea level (ft amsl); see Table 3.1. Groundwater
elevation data indicate shallow groundwater flow beneath the site to the northeast, which is
generally consistent with prior determinations; see Figure 3.1 for a potentiometric surface from
the April 21, 2023 gauging event.
3.2 Groundwater Sample Collection and Analysis
Groundwater samples were collected from monitoring wells RW-1R, RW-2, MW-2, MW-9A and
MW-10A using a bladder pump in accordance with low-flow sampling procedures on April 27,
2023. Water quality parameters, including pH, dissolved oxygen (DO), temperature, specific
conductance, and turbidity were monitored and recorded. To document quality assurance/quality
control (QA/QC), one equipment rinse blank, one field duplicate sample, and one trip blank were
also submitted for laboratory analysis.

Groundwater samples were collected into laboratory-provided containers, labeled, packaged on
ice, and shipped under chain-of-custody procedures to Pace Analytical National laboratory located
in Mount Juliet, Tennessee for analysis of previously detected VOCs (benzene, 1,2-dichloroethane,
1,2-dibromoethane, ethylbenzene, methyl tert-butyl ether (MTBE), naphthalene, toluene, m&p-
xylenes, and o-xylene (collectively total xylenes) by USEPA method 8260 and volatile petroleum
hydrocarbons (VPH) using Massachusetts Department of Environmental Protection (MADEP)
method.
3.3 Groundwater Analytical Results
Analytical results for detected constituents in groundwater are summarized Table 3.2. Complete
laboratory analytical data sheets are included as Appendix 1. Measured concentrations of detected
constituents in groundwater were compared to the NCDEQ Groundwater Standards, and the
NCDEQ gross contamination levels (GCLs). Results are summarized below.
VOCs
Each of the eight target VOCs was detected in site groundwater. Exceedances of the NCDEQ
Groundwater Standards were observed for one or more samples for benzene, ethylbenzene,
xylenes, MTBE, 1,2-dichloroethane, and naphthalene. Toluene and 1,2-dibromoethane were not
detected at concentrations exceeding the Groundwater Standard. No VOCs were detected at
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concentrations exceeding established GCLs. Figure 3.2 presents pre-excavation and post-
excavation concentrations of benzene in groundwater1.
VPH
Aliphatic VPH (C05-C08) were detected in four (4) of five (5) groundwater samples at
concentrations ranging from 152 to 7,890 micrograms per liter (µg/L) as compared to the NCDEQ
Groundwater Standard of 400 µg/L. Aliphatic VPH (C09-C12) were detected in three of five
groundwater samples at concentrations ranging from 82.6 to 2,830 µg/L as compared to the
NCDEQ Groundwater Standard of 700 µg/L. Aromatic VPH (C09-C10) were detected in three of
five groundwater samples at concentrations ranging from 414 to 1,840 µg/L, as compared to the
NCDEQ Groundwater Standard of 200 µg/L.

1 Ramboll notes that, although groundwater impacts above the 15A NCAC 2L groundwater standards
potentially extend off-site to the north/northeast, the adjacent off-site property owner repeatedly ignored
requests from Ramboll and NCDEQ for access thus, NCDEQ concluded that the adjacent off-site property
owner would be responsible for any migration of impacts onto that property.
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4. CONCLUSIONS AND REQUEST FOR CLOSURE
Ramboll, with support from WSSI, completed two post-excavation groundwater monitoring events
at the site in early November 2022 and in late April 2023. Based on the following site conditions,
the site qualifies for classification as a low-risk site.
 Detected concentrations of petroleum constituents in groundwater are below the NCDEQ
GCLs.
 An updated sensitive receptor survey did not identify receptors of concern. The nearest
downgradient potable water well is located approximately 0.88 miles from the site.
 No free product was detected at the site.
 Previously collected soil vapor and sub-slab vapor sample results do not indicate a
potential vapor intrusion concern for the on-site building or nearby off-site structures to
the north.
On behalf of The Davey Tree Company, Ramboll, with support from WSSI, performed additional
supplemental soil remediation activities at the site, including excavation and off-site disposal of
additional petroleum-affected soils, application of soil oxidation amendments, and subsequent
performance of two rounds of post remediation groundwater monitoring that document the
success of remediation activities. Both rounds of post-remediation groundwater monitoring
document that measured concentrations of petroleum constituents are below the GCLs. As
discussed in prior reports, although certain constituents remain present in groundwater at
concentrations exceeding the 15A NCAC 2L groundwater standards, an updated sensitive receptor
review did not identify complete exposure pathways, thus current site conditions do not pose an
unacceptable risk to site or surrounding area receptors.
Based on the above, Ramboll is petitioning for NCDEQ to issue a “No Further Action” status for the
site.
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5. REFERENCES
DeBruhl Environmental Excavating. (1992, October 28). Written Report for UST Closure.
Froeling & Robertson, Inc. (1992, November 30). Findings Report, Initial Site Characterization
Conducted on Davey Tree Company Site.
Froehling & Robertson, Inc. (1994, February 16). Comprehensive Site Assessment Conducted on
Davey Tree Expert Company Site.
Froeling & Robertson, Inc. (1996, March 12). Corrective Action Plan, The Davey Tree Expert
Company Site.
North Carolina Department of Environment, Health, and Natural Resources (1993, January 27).
Pollution Incident/U.S.T. Leak Reporting Form.
North Carolina Department of Environment, Health and Natural Resources (1996, July 18).
Division of Water Quality Site Priority Ranking, Davey Tree Expert Company.
North Carolina Groundwater Contamination Incident Management (1993, December 1). Site
Priority Ranking System.
North Carolina Underground Storage Tank Section (2010, December 1). Risk, Rank and
Abatement Rating Form, Davey Tree Experts.
NCDEQ (2021, June 16). Notice of Regulatory Requirements 15A NCAC 2L, 0407(d) Risk-based
Assessment and Corrective Action for Petroleum Underground Storage Tanks.
NCDEQ (2021, September 3). Request for Property Access 6161 McDaniel Lane, Charlotte,
Mecklenburg County.
NCDEQ (2022, February 8). Notice of Regulatory Requirements 6039 McDaniel Lane, Charlotte,
North Carolina.
NCDEQ (2022, August 15). Notice of Regulatory Requirements 15A NCAC 2L .0407 (Remediation
Plan Approval).
Ramboll (2021, May 28). Updated Sensitive Receptor Survey and Comprehensive Groundwater
Monitoring Event.
Ramboll (2022, January 27). Site Characterization Update Summary.
Ramboll (2022, August 11). Letter response to Notice of Regulatory Requirements (February 8,
2022) (Remediation Plan).
Ramboll (2022, December). Soil Cleanup Report.
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TABLES

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FIGURES

SITE LOCATIONCHARLOTTE, NORTH CAROLINAPROJECT: 169000XXXX | DATED: 1/14/2022 | DESIGNER: GOVERNBMFIGURE 1.1
RAMBOLL AMERICASENGINEERING SOLUTIONS INC
Service Layer Credits: Copyright:© 2013 National Geographic Society, i-cubed
0 4,0002,000 Feet
LAST SAVE: 3:39:57 PM!á(N
The Davey Tree Expert Company6039 McDaniel LaneCharlotte, North CarolinaV:\Office-Ops\Davey CSA\Figures\Figure xxx Site Location.mxdMap Scale: 1:1:20,000; Map Center: 80°45'47"W 35°16'0"N
KEY MAP
t
Property Boundary
!(
!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<MW-6
MW-7
RW-3
MW-8
MW-6A
MW-2A
MW-5
RW-4
751.59
MW-2
751.66
MW-1
754.33
MW-10
751.34
MW-9A
752.63
MW-4A
752.02
MW-1A
MW-9
752.73 RW-2
751.98
MW-3
751.51
MW-5A
754.75
MW-7A
750.32
MW-10A
751.27
RW-1/RW-1R
752.60 7527537517547
5
2
7
5
3
7
5
1
75
4
Notes
Groundwater levels were gauged on April 21,
2021. Wells that were located and gauged but
not ultimately sampled for groundwater
include MW-4A, RW-3, and RW-4.
Groundwater elevations are shown in ft. amsl.
All locations are approximate.
Wells were gauged using a water/oil interface
probe, free product was not detected.
amsl - above mean sea level.
ft. - foot.
MW - monitoring well.
RW - recovery well.
UST - underground storage tank.PROJECT: 1690021505 | DATED: 6/23/2023 | DESIGNER: MBAUERC:\Users\MBAUER\Documents\GIS\davey charlotte.aprx\3_Potentiometric Surface April 2021Service Layer Credits: World Imagery: NC CGIA, Maxar, Microsoft; Mecklenburg County GIS Open Data Portal.
0 5025
Feet
RAMBOLL US CONSULTING, INC.
A RAMBOLL COMPANY
FIGURE 3.1
The Davey Tree Expert Company
6039 McDaniel Lane
Charlotte, North Carolina
!Ñ<Monitoring Wells
Approximate Former Location of
USTs
Site Boundary
Potentiometric Surface Contour
GROUNDWATER
POTENTIOMETRIC SURFACE
(April 2023)
!á(N
Shallow Groundwater
Flow Direction
!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<!Ñ<MW-2
MW-9A
MW-9
RW-2
MW-3
MW-5A
MW-7A
MW-1A
MW-10A
RW-1/RW-1R
!(
Notes:
Groundwater samples were analyzed for the
presence of select volatile organic
compounds (VOCs) by USEPA method 8260
and for volatile petroleum hydrocarbons
(VPH) by the Massachusetts Department of
Environmental Protection (MADEP) VPH
Method; only detected benzene
concentrations are shown.
Concentrations that exceed the NCDEQ
Groundwater Standard are boldfaced.
Concentrations that exceed the NCDEQ GCL
are shaded in grey.
All locations are approximate.
Units are in micrograms per liter (μg/L).
/ - analyte concentration followed by field
duplicate value.
< - Benzene was not detected at the analytical
reporting limit detected.
GCL - Gross Contaminant Level.
MW - monitoring well.
NCDEQ - North Carolina Department of
Environmental Quality.
RW - recovery well.
Groundwater results for April 2021 are
reflective of pre-remediation conditions.PROJECT: 1690021505 | DATED: 6/23/2023 | DESIGNER: MBAUERC:\Users\MBAUER\Documents\GIS\davey charlotte.aprx\4_Detections in GroundwaterService Layer Credits: World Imagery: NC CGIA, Maxar, Microsoft; Mecklenburg County GIS Open Data Portal.
0 5025
Feet
RAMBOLL US CONSULTING, INC.
A RAMBOLL COMPANY
FIGURE 3.2
The Davey Tree Expert Company
6039 McDaniel Lane
Charlotte, North Carolina
Site Boundary
Approximate Former Location of USTs
Monitoring Wells!Ñ<FIGURE 3.2
SUMMARY OF BENZENE IN
GROUNDWATER
2021-2023
!á(N
1 μg/l Benzene - NCDEQ Groundwater
1 μg/l Benzene - Unknown Extent
04/21 11/22 4/23
3,880 4,130 126
MW-10A
04/21 11/22 4/23
7,530 3,030/3,200 195 / 207
RW-1 / RW-1R
MW-1A
04/21
<1.00
MW-3
04/21
<1.00
MW-5A
04/21
<1.00
MW-7A
04/21
<1.00
MW-9
04/21
<1.00
11/22 4/23
<1.00 <1.00
MW-9A
MW-2
04/23
2,310
04/21 11/22 4/23
38.1 36.1 37.9
RW-2
Approximate Excavation Boundary
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APPENDIX 1

April 2023 Groundwater Laboratory Analytical Data
Report

ANALYTICAL REPORT
May 04, 2023
EEE Consulting, Inc
Sample Delivery Group:L1609939
Samples Received:04/27/2023
Project Number:32329.01
Description:Groundwater
Site:DAVEY CHARLETTE
Report To:Jeffrey Fisher
201 Church Street SE
Blacksburg, VA 24060
Entire Report Reviewed By:
May 04, 2023
[Preliminary Report]
John Hawkins
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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May 04, 2023
John Hawkins
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EEE Consulting, Inc 32329.01 L1609939 05/04/23 15:14 1 of 18
TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
MW-9A L1609939-01 5
RW-2 L1609939-02 6
MW-2 L1609939-03 7
MW-10A L1609939-04 8
RW-1R L1609939-05 9
DUP-1 L1609939-06 10
FB L1609939-07 11
Qc: Quality Control Summary 12
Volatile Petroleum Hydrocarbons by Method MADEPV 12
Volatile Organic Compounds (GC/MS) by Method 8260B 14
Gl: Glossary of Terms 16
Al: Accreditations & Locations 17
Sc: Sample Chain of Custody 18
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-9A L1609939-01 GW Josh Hepler 04/25/23 11:20 04/27/23 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Petroleum Hydrocarbons by Method MADEPV WG2050838 1 04/28/23 16:16 04/28/23 16:16 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2051142 1 04/29/23 10:39 04/29/23 10:39 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
RW-2 L1609939-02 GW Josh Hepler 04/25/23 12:33 04/27/23 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Petroleum Hydrocarbons by Method MADEPV WG2050838 5 04/28/23 20:05 04/28/23 20:05 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2051142 25 04/29/23 14:56 04/29/23 14:56 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-2 L1609939-03 GW Josh Hepler 04/25/23 15:05 04/27/23 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Petroleum Hydrocarbons by Method MADEPV WG2050838 1 04/28/23 17:21 04/28/23 17:21 ACG Mt. Juliet, TN
Volatile Petroleum Hydrocarbons by Method MADEPV WG2051949 1 05/02/23 23:36 05/02/23 23:36 ADM Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2051142 1 04/29/23 10:59 04/29/23 10:59 DWR Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2052603 25 05/03/23 02:52 05/03/23 02:52 ADM Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-10A L1609939-04 GW Josh Hepler 04/25/23 16:12 04/27/23 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Petroleum Hydrocarbons by Method MADEPV WG2050838 1 04/28/23 17:54 04/28/23 17:54 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2052603 5 05/03/23 03:12 05/03/23 03:12 ADM Mt. Juliet, TN
Collected by Collected date/time Received date/time
RW-1R L1609939-05 GW Josh Hepler 04/25/23 17:32 04/27/23 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Petroleum Hydrocarbons by Method MADEPV WG2050838 1 04/28/23 18:27 04/28/23 18:27 ACG Mt. Juliet, TN
Volatile Petroleum Hydrocarbons by Method MADEPV WG2051949 5 05/03/23 00:08 05/03/23 00:08 ADM Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2051142 1 04/29/23 11:19 04/29/23 11:19 DWR Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2052603 25 05/03/23 03:32 05/03/23 03:32 ADM Mt. Juliet, TN
Collected by Collected date/time Received date/time
DUP-1 L1609939-06 GW Josh Hepler 04/25/23 17:37 04/27/23 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Petroleum Hydrocarbons by Method MADEPV WG2050838 1 04/28/23 19:00 04/28/23 19:00 ACG Mt. Juliet, TN
Volatile Petroleum Hydrocarbons by Method MADEPV WG2051949 5 05/03/23 00:41 05/03/23 00:41 ADM Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2051142 25 04/29/23 15:35 04/29/23 15:35 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
FB L1609939-07 GW Josh Hepler 04/25/23 17:00 04/27/23 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Petroleum Hydrocarbons by Method MADEPV WG2050838 1 04/28/23 19:32 04/28/23 19:32 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2051142 1 04/29/23 10:19 04/29/23 10:19 DWR Mt. Juliet, TN
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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CASE NARRATIVE
All sample aliquots were received at the correct temperature, in the proper containers, with the
appropriate preservatives, and within method specified holding times, unless qualified or notated within
the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples
have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control
are within established criteria except where addressed in this case narrative, a non-conformance form
or properly qualified within the sample results. By my digital signature below, I affirm to the best of my
knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the
quality of the data have been identified by the laboratory, and no information or data have been
knowingly withheld that would affect the quality of the data.
[Preliminary Report]
John Hawkins
Project Manager
Project Narrative
Due to multiple preparation procedures, calculated analytes are not reported in the quality control samples for EPH and VPH
Methods.

1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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John Hawkins
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 01
L1609939
MW-9A
Collected date/time: 04/25/23 11:20
Volatile Petroleum Hydrocarbons by Method MADEPV
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Unadjusted C5-C8 Aliphatics U 33.3 100 1 04/28/2023 16:16 WG2050838
Unadjusted C9-C12 Aliphatics U 33.3 100 1 04/28/2023 16:16 WG2050838
Unadjusted C9-C10 Aromatics U 33.3 100 1 04/28/2023 16:16 WG2050838
Adjusted C5-C8 Aliphatics U 33.3 100 1 04/28/2023 16:16 WG2050838
Adjusted C9-C12 Aliphatics U 33.3 100 1 04/28/2023 16:16 WG2050838
Total VPH U 66.7 200 1 04/28/2023 16:16 WG2050838
Benzene U 1.67 5.00 1 04/28/2023 16:16 WG2050838
Toluene U 1.67 5.00 1 04/28/2023 16:16 WG2050838
Ethylbenzene U 1.67 5.00 1 04/28/2023 16:16 WG2050838
m&p-Xylenes U 3.33 10.0 1 04/28/2023 16:16 WG2050838
o-Xylene U 1.67 5.00 1 04/28/2023 16:16 WG2050838
Methyl tert-butyl ether U 1.67 5.00 1 04/28/2023 16:16 WG2050838
Naphthalene U 1.67 5.00 1 04/28/2023 16:16 WG2050838
(S) 2,5-Dibromotoluene(FID)96.9 70.0-130 04/28/2023 16:16 WG2050838
(S) 2,5-Dibromotoluene(PID)100 70.0-130 04/28/2023 16:16 WG2050838
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/29/2023 10:39 WG2051142
Toluene U 0.278 1.00 1 04/29/2023 10:39 WG2051142
Ethylbenzene U 0.137 1.00 1 04/29/2023 10:39 WG2051142
Total Xylenes U 0.174 3.00 1 04/29/2023 10:39 WG2051142
Methyl tert-butyl ether U 0.101 1.00 1 04/29/2023 10:39 WG2051142
1,2-Dichloroethane U 0.0819 1.00 1 04/29/2023 10:39 WG2051142
1,2-Dibromoethane U 0.126 1.00 1 04/29/2023 10:39 WG2051142
Naphthalene U J4 1.00 5.00 1 04/29/2023 10:39 WG2051142
(S) Toluene-d8 101 80.0-120 04/29/2023 10:39 WG2051142
(S) 4-Bromofluorobenzene 107 77.0-126 04/29/2023 10:39 WG2051142
(S) 1,2-Dichloroethane-d4 93.3 70.0-130 04/29/2023 10:39 WG2051142
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 02
L1609939
RW-2
Collected date/time: 04/25/23 12:33
Volatile Petroleum Hydrocarbons by Method MADEPV
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Unadjusted C5-C8 Aliphatics 2030 167 500 5 04/28/2023 20:05 WG2050838
Unadjusted C9-C12 Aliphatics 3330 167 500 5 04/28/2023 20:05 WG2050838
Unadjusted C9-C10 Aromatics 1540 167 500 5 04/28/2023 20:05 WG2050838
Adjusted C5-C8 Aliphatics 1980 167 500 5 04/28/2023 20:05 WG2050838
Adjusted C9-C12 Aliphatics 337 167 500 5 04/28/2023 20:05 WG2050838
Total VPH 6900 333 1000 5 04/28/2023 20:05 WG2050838
Benzene 39.6 8.35 25.0 5 04/28/2023 20:05 WG2050838
Toluene U 8.35 25.0 5 04/28/2023 20:05 WG2050838
Ethylbenzene 889 8.35 25.0 5 04/28/2023 20:05 WG2050838
m&p-Xylenes 1030 16.7 50.0 5 04/28/2023 20:05 WG2050838
o-Xylene 25.5 8.35 25.0 5 04/28/2023 20:05 WG2050838
Methyl tert-butyl ether 17.0 J 8.35 25.0 5 04/28/2023 20:05 WG2050838
Naphthalene 375 8.35 25.0 5 04/28/2023 20:05 WG2050838
(S) 2,5-Dibromotoluene(FID)94.3 70.0-130 04/28/2023 20:05 WG2050838
(S) 2,5-Dibromotoluene(PID)94.8 70.0-130 04/28/2023 20:05 WG2050838
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 37.9 2.35 25.0 25 04/29/2023 14:56 WG2051142
Toluene U 6.95 25.0 25 04/29/2023 14:56 WG2051142
Ethylbenzene 982 3.43 25.0 25 04/29/2023 14:56 WG2051142
Total Xylenes 956 4.35 75.0 25 04/29/2023 14:56 WG2051142
Methyl tert-butyl ether 7.33 J 2.53 25.0 25 04/29/2023 14:56 WG2051142
1,2-Dichloroethane 5.90 J 2.05 25.0 25 04/29/2023 14:56 WG2051142
1,2-Dibromoethane U 3.15 25.0 25 04/29/2023 14:56 WG2051142
Naphthalene 226 J4 25.0 125 25 04/29/2023 14:56 WG2051142
(S) Toluene-d8 96.3 80.0-120 04/29/2023 14:56 WG2051142
(S) 4-Bromofluorobenzene 110 77.0-126 04/29/2023 14:56 WG2051142
(S) 1,2-Dichloroethane-d4 89.6 70.0-130 04/29/2023 14:56 WG2051142
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 03
L1609939
MW-2
Collected date/time: 04/25/23 15:05
Volatile Petroleum Hydrocarbons by Method MADEPV
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Unadjusted C5-C8 Aliphatics 4760 33.3 100 1 04/28/2023 17:21 WG2050838
Unadjusted C9-C12 Aliphatics 1570 33.3 100 1 04/28/2023 17:21 WG2050838
Unadjusted C9-C10 Aromatics 414 33.3 100 1 05/02/2023 23:36 WG2051949
Adjusted C5-C8 Aliphatics 2270 33.3 100 1 04/28/2023 17:21 WG2050838
Adjusted C9-C12 Aliphatics U 33.3 100 1 04/28/2023 17:21 WG2050838
Total VPH 6740 66.7 200 1 05/02/2023 23:36 WG2051949
Benzene 1480 1.67 5.00 1 04/28/2023 17:21 WG2050838
Toluene 29.7 1.67 5.00 1 04/28/2023 17:21 WG2050838
Ethylbenzene 138 1.67 5.00 1 04/28/2023 17:21 WG2050838
m&p-Xylenes 384 3.33 10.0 1 04/28/2023 17:21 WG2050838
o-Xylene 177 1.67 5.00 1 04/28/2023 17:21 WG2050838
Methyl tert-butyl ether 95.8 1.67 5.00 1 04/28/2023 17:21 WG2050838
Naphthalene 58.4 1.67 5.00 1 04/28/2023 17:21 WG2050838
(S) 2,5-Dibromotoluene(FID)116 70.0-130 04/28/2023 17:21 WG2050838
(S) 2,5-Dibromotoluene(FID)120 70.0-130 05/02/2023 23:36 WG2051949
(S) 2,5-Dibromotoluene(PID)107 70.0-130 04/28/2023 17:21 WG2050838
(S) 2,5-Dibromotoluene(PID)110 70.0-130 05/02/2023 23:36 WG2051949
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 2310 2.35 25.0 25 05/03/2023 02:52 WG2052603
Toluene 22.1 0.278 1.00 1 04/29/2023 10:59 WG2051142
Ethylbenzene 127 3.43 25.0 25 05/03/2023 02:52 WG2052603
Total Xylenes 537 4.35 75.0 25 05/03/2023 02:52 WG2052603
Methyl tert-butyl ether 156 2.53 25.0 25 05/03/2023 02:52 WG2052603
1,2-Dichloroethane 194 2.05 25.0 25 05/03/2023 02:52 WG2052603
1,2-Dibromoethane U 0.126 1.00 1 04/29/2023 10:59 WG2051142
Naphthalene 20.4 J4 1.00 5.00 1 04/29/2023 10:59 WG2051142
(S) Toluene-d8 97.8 80.0-120 04/29/2023 10:59 WG2051142
(S) Toluene-d8 108 80.0-120 05/03/2023 02:52 WG2052603
(S) 4-Bromofluorobenzene 111 77.0-126 04/29/2023 10:59 WG2051142
(S) 4-Bromofluorobenzene 101 77.0-126 05/03/2023 02:52 WG2052603
(S) 1,2-Dichloroethane-d4 84.5 70.0-130 04/29/2023 10:59 WG2051142
(S) 1,2-Dichloroethane-d4 105 70.0-130 05/03/2023 02:52 WG2052603
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 04
L1609939
MW-10A
Collected date/time: 04/25/23 16:12
Volatile Petroleum Hydrocarbons by Method MADEPV
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Unadjusted C5-C8 Aliphatics 279 33.3 100 1 04/28/2023 17:54 WG2050838
Unadjusted C9-C12 Aliphatics 121 33.3 100 1 04/28/2023 17:54 WG2050838
Unadjusted C9-C10 Aromatics U 33.3 100 1 04/28/2023 17:54 WG2050838
Adjusted C5-C8 Aliphatics 152 33.3 100 1 04/28/2023 17:54 WG2050838
Adjusted C9-C12 Aliphatics 82.6 J 33.3 100 1 04/28/2023 17:54 WG2050838
Total VPH 400 66.7 200 1 04/28/2023 17:54 WG2050838
Benzene 116 1.67 5.00 1 04/28/2023 17:54 WG2050838
Toluene U 1.67 5.00 1 04/28/2023 17:54 WG2050838
Ethylbenzene 16.7 1.67 5.00 1 04/28/2023 17:54 WG2050838
m&p-Xylenes 7.99 J 3.33 10.0 1 04/28/2023 17:54 WG2050838
o-Xylene 9.52 1.67 5.00 1 04/28/2023 17:54 WG2050838
Methyl tert-butyl ether U 1.67 5.00 1 04/28/2023 17:54 WG2050838
Naphthalene 15.9 B 1.67 5.00 1 04/28/2023 17:54 WG2050838
(S) 2,5-Dibromotoluene(FID)95.7 70.0-130 04/28/2023 17:54 WG2050838
(S) 2,5-Dibromotoluene(PID)96.5 70.0-130 04/28/2023 17:54 WG2050838
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 126 0.471 5.00 5 05/03/2023 03:12 WG2052603
Toluene U 1.39 5.00 5 05/03/2023 03:12 WG2052603
Ethylbenzene 11.3 0.685 5.00 5 05/03/2023 03:12 WG2052603
Total Xylenes 9.63 J 0.870 15.0 5 05/03/2023 03:12 WG2052603
Methyl tert-butyl ether 0.736 J 0.505 5.00 5 05/03/2023 03:12 WG2052603
1,2-Dichloroethane 4.65 J 0.409 5.00 5 05/03/2023 03:12 WG2052603
1,2-Dibromoethane U 0.630 5.00 5 05/03/2023 03:12 WG2052603
Naphthalene 7.60 J 5.00 25.0 5 05/03/2023 03:12 WG2052603
(S) Toluene-d8 109 80.0-120 05/03/2023 03:12 WG2052603
(S) 4-Bromofluorobenzene 98.4 77.0-126 05/03/2023 03:12 WG2052603
(S) 1,2-Dichloroethane-d4 104 70.0-130 05/03/2023 03:12 WG2052603
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 05
L1609939
RW-1R
Collected date/time: 04/25/23 17:32
Volatile Petroleum Hydrocarbons by Method MADEPV
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Unadjusted C5-C8 Aliphatics 10100 33.3 100 1 04/28/2023 18:27 WG2050838
Unadjusted C9-C12 Aliphatics 2090 33.3 100 1 04/28/2023 18:27 WG2050838
Unadjusted C9-C10 Aromatics 1540 167 500 5 05/03/2023 00:08 WG2051949
Adjusted C5-C8 Aliphatics 7890 33.3 100 1 04/28/2023 18:27 WG2050838
Adjusted C9-C12 Aliphatics 914 33.3 100 1 04/28/2023 18:27 WG2050838
Total VPH 13700 333 1000 5 05/03/2023 00:08 WG2051949
Benzene 1210 1.67 5.00 1 04/28/2023 18:27 WG2050838
Toluene 144 1.67 5.00 1 04/28/2023 18:27 WG2050838
Ethylbenzene 511 1.67 5.00 1 04/28/2023 18:27 WG2050838
m&p-Xylenes 94.7 3.33 10.0 1 04/28/2023 18:27 WG2050838
o-Xylene 191 1.67 5.00 1 04/28/2023 18:27 WG2050838
Methyl tert-butyl ether 94.4 1.67 5.00 1 04/28/2023 18:27 WG2050838
Naphthalene 213 1.67 5.00 1 04/28/2023 18:27 WG2050838
(S) 2,5-Dibromotoluene(FID)130 70.0-130 04/28/2023 18:27 WG2050838
(S) 2,5-Dibromotoluene(FID)96.1 70.0-130 05/03/2023 00:08 WG2051949
(S) 2,5-Dibromotoluene(PID)103 70.0-130 04/28/2023 18:27 WG2050838
(S) 2,5-Dibromotoluene(PID)96.6 70.0-130 05/03/2023 00:08 WG2051949
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 1950 2.35 25.0 25 05/03/2023 03:32 WG2052603
Toluene 146 6.95 25.0 25 05/03/2023 03:32 WG2052603
Ethylbenzene 470 3.43 25.0 25 05/03/2023 03:32 WG2052603
Total Xylenes 240 4.35 75.0 25 05/03/2023 03:32 WG2052603
Methyl tert-butyl ether 118 2.53 25.0 25 05/03/2023 03:32 WG2052603
1,2-Dichloroethane 125 2.05 25.0 25 05/03/2023 03:32 WG2052603
1,2-Dibromoethane 4.83 0.126 1.00 1 04/29/2023 11:19 WG2051142
Naphthalene 115 J 25.0 125 25 05/03/2023 03:32 WG2052603
(S) Toluene-d8 92.0 80.0-120 04/29/2023 11:19 WG2051142
(S) Toluene-d8 107 80.0-120 05/03/2023 03:32 WG2052603
(S) 4-Bromofluorobenzene 112 77.0-126 04/29/2023 11:19 WG2051142
(S) 4-Bromofluorobenzene 101 77.0-126 05/03/2023 03:32 WG2052603
(S) 1,2-Dichloroethane-d4 81.2 70.0-130 04/29/2023 11:19 WG2051142
(S) 1,2-Dichloroethane-d4 106 70.0-130 05/03/2023 03:32 WG2052603
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 06
L1609939
DUP-1
Collected date/time: 04/25/23 17:37
Volatile Petroleum Hydrocarbons by Method MADEPV
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Unadjusted C5-C8 Aliphatics 10800 33.3 100 1 04/28/2023 19:00 WG2050838
Unadjusted C9-C12 Aliphatics 2330 33.3 100 1 04/28/2023 19:00 WG2050838
Unadjusted C9-C10 Aromatics 1840 167 500 5 05/03/2023 00:41 WG2051949
Adjusted C5-C8 Aliphatics 8460 33.3 100 1 04/28/2023 19:00 WG2050838
Adjusted C9-C12 Aliphatics 2830 33.3 100 1 04/28/2023 19:00 WG2050838
Total VPH 15000 333 1000 5 05/03/2023 00:41 WG2051949
Benzene 1240 1.67 5.00 1 04/28/2023 19:00 WG2050838
Toluene 116 1.67 5.00 1 04/28/2023 19:00 WG2050838
Ethylbenzene 563 1.67 5.00 1 04/28/2023 19:00 WG2050838
m&p-Xylenes 98.9 3.33 10.0 1 04/28/2023 19:00 WG2050838
o-Xylene 192 1.67 5.00 1 04/28/2023 19:00 WG2050838
Methyl tert-butyl ether 94.2 1.67 5.00 1 04/28/2023 19:00 WG2050838
Naphthalene 245 1.67 5.00 1 04/28/2023 19:00 WG2050838
(S) 2,5-Dibromotoluene(FID)128 70.0-130 04/28/2023 19:00 WG2050838
(S) 2,5-Dibromotoluene(FID)94.7 70.0-130 05/03/2023 00:41 WG2051949
(S) 2,5-Dibromotoluene(PID)99.4 70.0-130 04/28/2023 19:00 WG2050838
(S) 2,5-Dibromotoluene(PID)94.9 70.0-130 05/03/2023 00:41 WG2051949
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 2070 2.35 25.0 25 04/29/2023 15:35 WG2051142
Toluene 129 6.95 25.0 25 04/29/2023 15:35 WG2051142
Ethylbenzene 576 3.43 25.0 25 04/29/2023 15:35 WG2051142
Total Xylenes 246 4.35 75.0 25 04/29/2023 15:35 WG2051142
Methyl tert-butyl ether 138 2.53 25.0 25 04/29/2023 15:35 WG2051142
1,2-Dichloroethane 111 2.05 25.0 25 04/29/2023 15:35 WG2051142
1,2-Dibromoethane 5.50 J 3.15 25.0 25 04/29/2023 15:35 WG2051142
Naphthalene 131 J4 25.0 125 25 04/29/2023 15:35 WG2051142
(S) Toluene-d8 101 80.0-120 04/29/2023 15:35 WG2051142
(S) 4-Bromofluorobenzene 110 77.0-126 04/29/2023 15:35 WG2051142
(S) 1,2-Dichloroethane-d4 95.0 70.0-130 04/29/2023 15:35 WG2051142
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 07
L1609939
FB
Collected date/time: 04/25/23 17:00
Volatile Petroleum Hydrocarbons by Method MADEPV
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Unadjusted C5-C8 Aliphatics 58.9 J 33.3 100 1 04/28/2023 19:32 WG2050838
Unadjusted C9-C12 Aliphatics 49.4 J 33.3 100 1 04/28/2023 19:32 WG2050838
Unadjusted C9-C10 Aromatics U 33.3 100 1 04/28/2023 19:32 WG2050838
Adjusted C5-C8 Aliphatics 58.4 J 33.3 100 1 04/28/2023 19:32 WG2050838
Adjusted C9-C12 Aliphatics 45.9 J 33.3 100 1 04/28/2023 19:32 WG2050838
Total VPH 108 J 66.7 200 1 04/28/2023 19:32 WG2050838
Benzene U 1.67 5.00 1 04/28/2023 19:32 WG2050838
Toluene U 1.67 5.00 1 04/28/2023 19:32 WG2050838
Ethylbenzene U 1.67 5.00 1 04/28/2023 19:32 WG2050838
m&p-Xylenes U 3.33 10.0 1 04/28/2023 19:32 WG2050838
o-Xylene 2.19 J 1.67 5.00 1 04/28/2023 19:32 WG2050838
Methyl tert-butyl ether U 1.67 5.00 1 04/28/2023 19:32 WG2050838
Naphthalene 8.38 B 1.67 5.00 1 04/28/2023 19:32 WG2050838
(S) 2,5-Dibromotoluene(FID)89.0 70.0-130 04/28/2023 19:32 WG2050838
(S) 2,5-Dibromotoluene(PID)90.1 70.0-130 04/28/2023 19:32 WG2050838
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/29/2023 10:19 WG2051142
Toluene 0.467 J 0.278 1.00 1 04/29/2023 10:19 WG2051142
Ethylbenzene 0.190 J 0.137 1.00 1 04/29/2023 10:19 WG2051142
Total Xylenes 1.16 J 0.174 3.00 1 04/29/2023 10:19 WG2051142
Methyl tert-butyl ether U 0.101 1.00 1 04/29/2023 10:19 WG2051142
1,2-Dichloroethane U 0.0819 1.00 1 04/29/2023 10:19 WG2051142
1,2-Dibromoethane U 0.126 1.00 1 04/29/2023 10:19 WG2051142
Naphthalene U J4 1.00 5.00 1 04/29/2023 10:19 WG2051142
(S) Toluene-d8 98.5 80.0-120 04/29/2023 10:19 WG2051142
(S) 4-Bromofluorobenzene 109 77.0-126 04/29/2023 10:19 WG2051142
(S) 1,2-Dichloroethane-d4 96.1 70.0-130 04/29/2023 10:19 WG2051142
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG2050838
Volatile Petroleum Hydrocarbons by Method MADEPV L1609939-01,02,03,04,05,06,07
Method Blank (MB)
(MB) R3919493-3 04/28/23 15:43
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Unadjusted C5-C8 Aliphatics U 33.3 100
Unadjusted C9-C12 Aliphatics U 33.3 100
Unadjusted C9-C10 Aromatics U 33.3 100
Adjusted C5-C8 Aliphatics U 33.3 100
Adjusted C9-C12 Aliphatics U 33.3 100
Total VPH U 66.7 200
Benzene U 1.67 5.00
Toluene U 1.67 5.00
Ethylbenzene U 1.67 5.00
m&p-Xylenes U 3.33 10.0
o-Xylene U 1.67 5.00
Methyl tert-butyl ether U 1.67 5.00
Naphthalene 2.25 J 1.67 5.00
(S) 2,5-Dibromotoluene(FID)95.9 70.0-130
(S) 2,5-Dibromotoluene(PID)96.5 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3919493-1 04/28/23 13:32 • (LCSD) R3919493-2 04/28/23 14:05
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Unadjusted C5-C8 Aliphatics 1200 1370 1310 114 109 70.0-130 4.48 50
Unadjusted C9-C12 Aliphatics 1400 1480 1430 106 102 70.0-130 3.44 50
Unadjusted C9-C10 Aromatics 200 233 226 117 113 70.0-130 3.05 50
Total VPH 2800 3080 2970 110 106 70.0-130 3.64 50
Benzene 200 190 183 95.0 91.5 70.0-130 3.75 50
Toluene 200 191 185 95.5 92.5 70.0-130 3.19 50
Ethylbenzene 200 193 186 96.5 93.0 70.0-130 3.69 50
m&p-Xylenes 400 405 392 101 98.0 70.0-130 3.26 50
o-Xylene 200 194 189 97.0 94.5 70.0-130 2.61 50
Methyl tert-butyl ether 200 200 198 100 99.0 70.0-130 1.01 50
Naphthalene 200 210 204 105 102 70.0-130 2.90 50
(S) 2,5-Dibromotoluene(FID) 96.9 98.3 70.0-130
(S) 2,5-Dibromotoluene(PID) 98.4 99.6 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2051949
Volatile Petroleum Hydrocarbons by Method MADEPV L1609939-03,05,06
Method Blank (MB)
(MB) R3920167-3 05/02/23 18:33
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Unadjusted C9-C10 Aromatics U 33.3 100
Total VPH U 66.7 200
(S) 2,5-Dibromotoluene(FID)93.7 70.0-130
(S) 2,5-Dibromotoluene(PID)95.3 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3920167-1 05/02/23 16:22 • (LCSD) R3920167-2 05/02/23 16:55
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Unadjusted C9-C10 Aromatics 200 215 221 108 111 70.0-130 2.75 50
Total VPH 2800 2800 3010 100 108 70.0-130 7.23 50
(S) 2,5-Dibromotoluene(FID) 111 101 70.0-130
(S) 2,5-Dibromotoluene(PID) 107 100 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2051142
Volatile Organic Compounds (GC/MS) by Method 8260B L1609939-01,02,03,05,06,07
Method Blank (MB)
(MB) R3919960-3 04/29/23 08:28
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Benzene U 0.0941 1.00
Toluene U 0.278 1.00
Ethylbenzene U 0.137 1.00
Xylenes, Total U 0.174 3.00
Methyl tert-butyl ether U 0.101 1.00
1,2-Dichloroethane U 0.0819 1.00
1,2-Dibromoethane U 0.126 1.00
Naphthalene U 1.00 5.00
(S) Toluene-d8 95.2 80.0-120
(S) 4-Bromofluorobenzene 107 77.0-126
(S) 1,2-Dichloroethane-d4 94.5 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3919960-1 04/29/23 07:10 • (LCSD) R3919960-2 04/29/23 07:29
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Benzene 5.00 5.66 5.89 113 118 70.0-123 3.98 20
Toluene 5.00 5.11 5.10 102 102 79.0-120 0.196 20
Ethylbenzene 5.00 5.24 5.28 105 106 79.0-123 0.760 20
Xylenes, Total 15.0 13.5 14.0 90.0 93.3 79.0-123 3.64 20
Methyl tert-butyl ether 5.00 5.89 5.91 118 118 68.0-125 0.339 20
1,2-Dichloroethane 5.00 5.14 5.31 103 106 70.0-128 3.25 20
1,2-Dibromoethane 5.00 4.96 5.00 99.2 100 80.0-122 0.803 20
Naphthalene 5.00 2.49 2.84 49.8 56.8 54.0-135 J4 13.1 20
(S) Toluene-d8 100 97.1 80.0-120
(S) 4-Bromofluorobenzene 114 109 77.0-126
(S) 1,2-Dichloroethane-d4 93.1 91.9 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2052603
Volatile Organic Compounds (GC/MS) by Method 8260B L1609939-03,04,05
Method Blank (MB)
(MB) R3920413-4 05/03/23 00:40
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Benzene U 0.0941 1.00
Toluene U 0.278 1.00
Ethylbenzene U 0.137 1.00
Xylenes, Total U 0.174 3.00
Methyl tert-butyl ether U 0.101 1.00
1,2-Dichloroethane U 0.0819 1.00
1,2-Dibromoethane U 0.126 1.00
Naphthalene U 1.00 5.00
(S) Toluene-d8 111 80.0-120
(S) 4-Bromofluorobenzene 96.8 77.0-126
(S) 1,2-Dichloroethane-d4 108 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3920413-1 05/02/23 23:19 • (LCSD) R3920413-2 05/02/23 23:39
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Benzene 5.00 5.06 5.38 101 108 70.0-123 6.13 20
Toluene 5.00 4.65 4.63 93.0 92.6 79.0-120 0.431 20
Ethylbenzene 5.00 4.47 4.91 89.4 98.2 79.0-123 9.38 20
Xylenes, Total 15.0 13.5 13.5 90.0 90.0 79.0-123 0.000 20
Methyl tert-butyl ether 5.00 4.52 4.93 90.4 98.6 68.0-125 8.68 20
1,2-Dichloroethane 5.00 4.77 4.93 95.4 98.6 70.0-128 3.30 20
1,2-Dibromoethane 5.00 4.23 4.49 84.6 89.8 80.0-122 5.96 20
Naphthalene 5.00 3.50 3.91 70.0 78.2 54.0-135 11.1 20
(S) Toluene-d8 110 103 80.0-120
(S) 4-Bromofluorobenzene 102 96.6 77.0-126
(S) 1,2-Dichloroethane-d4 104 109 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
RDL Reported Detection Limit.
Rec.Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
Dilution
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
B The same analyte is found in the associated blank.
J The identification of the analyte is acceptable; the reported value is an estimate.
J4 The associated batch QC was outside the established quality control range for accuracy.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
Alabama 40660 Nebraska NE-OS-15-05
Alaska 17-026 Nevada TN000032021-1
Arizona AZ0612 New Hampshire 2975
Arkansas 88-0469 New Jersey–NELAP TN002
California 2932 New Mexico ¹TN00003
Colorado TN00003 New York 11742
Connecticut PH-0197 North Carolina Env375
Florida E87487 North Carolina ¹DW21704
Georgia NELAP North Carolina ³41
Georgia ¹923 North Dakota R-140
Idaho TN00003 Ohio–VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
Iowa 364 Pennsylvania 68-02979
Kansas E-10277 Rhode Island LAO00356
Kentucky ¹ ⁶KY90010 South Carolina 84004002
Kentucky ²16 South Dakota n/a
Louisiana AI30792 Tennessee ¹ ⁴2006
Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
Maryland 324 Utah TN000032021-11
Massachusetts M-TN003 Vermont VT2006
Michigan 9958 Virginia 110033
Minnesota 047-999-395 Washington C847
Mississippi TN00003 West Virginia 233
Missouri 340 Wisconsin 998093910
Montana CERT0086 Wyoming A2LA
A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789
A2LA – ISO 17025 ⁵1461.02 DOD 1461.01
Canada 1461.01 USDA P330-15-00234
EPA–Crypto TN00003
ACCREDITATIONS & LOCATIONS

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