MO_88110_88110_CA_O_20200529_Letters to Duffey & Lots 6 & 7b

.;acobs
May 29, 2020
Delivered via email (ndlnestoro0ool.com)
Mr. and Mrs. Nicholas Nestora
1247 Middlecrest Drive NW
Concord, North Carolina 28027
Subject: Results from Recent Soil Vapor Monitoring
Plantation Pipe Line Company
Poplar Tent Road Site
NCDEQ Groundwater Incident No. 88110
Dear Mr. and Mrs. Nestora,
14120 Ballantyne Corporate Place, Suite 200
Charlotte, North Carolina 28277
United States
T +1.704.544.4040
F +1.704.544.4041
www.jacobs.com
Thank you for allowing us to conduct semiannual soil vapor monitoring activities on your property in
April 2020 on behalf of Plantation Pipe Line Company (Plantation). The purpose of this letter is to provide
a summary of the monitoring activities conducted on your property, along with a summary of the
analytical results.
April 2020 Monitoring Activities
On April 14, 2020, Jacobs sent you an email requesting access to your property to collect samples from
soil vapor monitoring points SV-10R2, SV-12R, and SV-13R (see attached figure). On April 22, 2020, leak
checks were conducted on soil vapor monitoring points SV-10R2, SV-12R, and SV-13R prior to collecting
a vapor sample. These soil vapor monitoring points passed the leak check and were purged with an electric
sampling pump prior to sample collection. Soil vapor samples were then collected using vacuum canisters
and sampling syringes with charcoal tubes. The samples were submitted to Eurofins TestAmerica in
Knoxville, Tennessee for analysis of benzene, toluene, ethylbenzene, and xylenes (BTEX), naphthalene,
and 2-methylnaphthalene.
Analytical Results
The analytical data from the April 22, 2020, monitoring event are summarized in Table 1, and the
complete laboratory report is included in Attachment A. When reviewing the laboratory analytical report,
please note the sample identifications for your soil vapor monitoring points are SV-10R2-042220,
SV-12R-042220, and SV-13R-042220. Data from historical monitoring events are shown in Table 2.
The analytical results show that the samples collected in April 2020 were significantly lower than North
Carolina Department of Environmental Quality (NCDEQ) and U.S. Environmental Protection Agency (EPA)
regulatory screening criteria, as shown in Table 1. The purpose of these soil gas criteria is to "screen" site
data to help identify areas, contaminants, and conditions that may require further evaluation or attention.

Mr. and Mrs. Nicholas Nestora
May 29, 2020
Page 2
The results of the April 2020 monitoring event are generally consistent with the results of the previous
monitoring events. As shown in Table 2, some variability is apparent when comparing the data from the
historical monitoring events. In general, soil vapor monitoring results are expected to vary due to several
factors, including seasonal temperature changes, changes in barometric pressure, changes in water table
elevations, changes in subsurface conditions due to precipitation prior to a monitoring event, changes in
subsurface conditions due to operation of the remediation system, and variations in the contaminant
source concentrations. Also, because the soil vapor monitoring points have been replaced (SV-10R was
replaced by SV-10R2 in 2014, SV-12 was replaced by SV-12R in 2012, and SV-13 was replaced by
SV-13R in 2014), they are currently installed in slightly different locations compared to the original
monitoring points.
Soil Vapor Monitoring Plan
The next semiannual monitoring event is planned for October 2020. A Jacobs representative will contact
you separately to coordinate this monitoring event.
As discussed in the Meeting Summary and Rebound Monitoring Plan Letter that Jacobs submitted to
NCDEQ on May 30, 2019, the biosparging and soil vapor extraction (SVE) systems were turned off at the
end of April 2019 for rebound monitoring.
Thank you for your assistance and we apologize for any inconvenience this sampling program may cause.
Please feel free to contact me at 704.543.3285 or Jerry Aycock with Plantation at 770.751.4165 if you
have any questions about the monitoring results. The NCDEQ is an additional resource to discuss aspects
of the site and our monitoring activities. Ms. Trudy Beverly is the NCDEQ case manager and can be
contacted at 704.663.1699 concerning this site (NCDEQ Incident #88110).
Again, thank you for your cooperation.
Sincerely,
Mike Skeean, P.E.
Senior Project Manager
Copies to: Jerry Aycock, Plantation (via email)
Trudy Beverly, North Carolina Department of Environmental Quality (via email and FTP)
Brian Pace, Laureldale LLC (via email)
File — Jacobs
Attachments:
Table 1 — Soil Vapor Analytical Results (April 2020)
Table 2 — Historical Soil Vapor Analytical Results (October 2007 through April 2020)
Figure 1 — Biosparging/SVE System As -Built
Attachment A — Analytical Laboratory Report

Tables

Table 1. Soil Vapor Analytical Results (April 2020)
Poplar Tent Road Site
Plantation Pipe Line Company
Concord, Cabarrus County, North Carolina
Ci7
N
d LO
C
i+ d
Date Collected
d—
c 0
y r
26
C
.0 O
r
X O
d
5` O
R
O
mO
Sample ID
~
C"
~o
I
~5'~
R H
H(MM/DD/YYYY)
C4 C
W
Z
=
Pg/m3
SV-10R2-042220
04/22/2020
0.26 J
ND <4.5
ND <3.5
ND <3.5
ND <3.5
ND <2.13
ND <3.23
SV-12R-042220
04/22/2020
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
ND <2.13
ND <3.23
SV-13R-042220
04/22/2020
0.49 J
ND <4.5
ND <3.5
1.4 J
0.77 J
ND <2.13
ND <3.23
Soil Gas Screening Criteria'
120
34800
374
695
695
20.9
NS
Soil Gas Screening Criteria
120
35000
370
700
700
21
NS
Notes:
' February 2018 North Carolina Department of Environmental Quality Division of Waste Management Residential Vapor Intrusion Screening Levels for Sub -Slab and
Exterior Soil Gas (SGSL) based on an attenuation factor of 0.03. https://files.nc.gov/ncdeq/Waste%20Management/DWM/SF/RiskBasedRemediation/Feb2018_Res_VISLs.pdf
2 EPA Vapor Intrusion Screening Levels (VISL) Calculator (AF = 0.03), TRL = 10-5 or THQ = 0.2, accessed June 19, 2019. https://epa-visl.ornl.gov/cgi-bin/visl_search
3 The method detection limit is presented for samples analyzed by TO-17 in April 2020.
Bold text with gray highlighting indicates exceedance of one or more screening criteria
< = Indicates value is less than the shown reporting limit
pg/m3 = micrograms per cubic meter
AF = attenuation factor
EPA = U.S. Environmental Protection Agency
J = estimated value
ND = not detected
NS = no soil gas screening criteria available
TRL = Target Risk Level
THQ = Target Hazard Quotient
Page 1 of 1

Table 2. Historical Soil Vapor Analytical Results (October 2007 through April 2020)
Poplar Tent Road Site
Plantation Pipe Line Company
Concord, Cabarrus County, North Carolina
Sample ID
Date Collected
(MM/DD/YYYY)
d
m"
0 6
.0 O
s
W
T �
Q O
£
X O
c-
m
s 6
m
Z
m
s p
m
Z
t 0
N ,�
c
d
t p
N
c
�
42 O
X
Ng/m3
SV-10
10/3/2007
ND < 2.2
0.57 J
0.25 J
0.64 J
0.25
J
2.3
NA
1.2 J
NA
0.89 J
SV-10-DUP
10/3/2007
ND < 2.4
1.1 J
0.31 J
0.57 J
0.31
J
ND < 2.4
NA
0.57 J
NA
0.88 J
SV-10
11/28/2007
ND < 1.8
1.6 J
0.68 J
2.0 J
0.71
J
ND < 1.8
NA
ND < 1.8
NA
2.71 J
SV-10R-111612
11/16/2012
32.4
32.5
981
18.3 J
39.1
ND < 3.84
2.7 J
ND < 4.26
ND < 1.7
57.4
SV-10R-0304131
03/04/2013
29 B
19 B
910
4.9 J
22
ND < 2.6
ND < 2.5
ND < 74
ND < 2.5
NA
SV-10R-0304132
03/04/2013
37.7
25.1
848
7.86 J
30.6
15.2
ND < 2.5
ND < 11.7
1.5 J
38.4
SV-10R2-092514
9/25/2014
1.6
3.5
1.1 J
2.0
ND < 1.9
NA
ND < 2.5 J
NA
ND < 2.5 J
NA
SV-10R2-041718
04/17/2018
0.22
1.2
ND <0.62
ND <0.62
ND <0.62
NA
3.3
NA
7.4
NA
SV-10R2-050318
05/03/2018
ND <0.17
0.39 J
ND <0.80
0.21 J
ND <0.80
NA
ND <2.5
NA
ND <2.5
NA
SV-10R2-101718
10/17/2018
0.34 J
0.73 J
0.18 J
0.99 J
0.26
J
NA
ND <2.5
NA
6.4
NA
SV-10R2-042419
04/24/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <9.4 J
NA
ND <4.2 J
NA
SV-10R2-101719
10/17/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <1.7
NA
ND <2.6
NA
SV-10R2-042220
04/22/2020
0.26 J
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <2.1
NA
ND <3.2
NA
SV-12
10/2/2007
ND < 2.2
0.28 J
0.22 J
0.57 J
0.25
J
ND < 2.2
NA
ND < 4.4
NA
0.82 J
SV-12
11/28/2007
0.4 J
1.9
0.84 J
2.7 J
1.0
J
ND < 1.8
NA
ND < 1.8
NA
3.7 J
SV-12R-111612
11/16/2012
ND < 2.14
18.9
7.77 J
7.73 J
ND < 2.92
ND < 3.52
7.8 J
ND < 3.90
ND < 1.8
9.63 J
SV-12R-0304131
03/04/2013
ND < 0.2
ND < 0.27
0.17 J
ND < 0.27
0.013
J
ND < 0.27
ND < 2.5
ND < 1.4
ND < 2.5
NA
SV-12R-0304132
03/04/2013
0.825
0.805 J
ND < 0.963
0.676 J
0.337
J
ND < 1.16
ND < 2.4
ND < 2.58
1.5 J
1.02 J
SV-12R-080513
8/5/2013
0.052 J
0.39
0.027 J
0.061 J
0.028
J
0.061 J
ND < 2.5
ND < 0.74
ND < 2.5
NA
SV-12R-022714
02/27/2014
0.057 J
0.14 J
0.025 J1
0.081 J
0.038
J
0.020 J
ND < 2.5
ND < 0.14 X1
ND < 2.5
NA
SV-12R-092314
09/23/2014
0.039 J
0.11 J
ND < 0.16
0.038 J
0.016
J
NA
ND < 2.5
NA
ND < 2.5
NA
SV-12R-042815
04/28/2015
ND < 0.15
ND < 0.75
ND < 0.75
ND < 0.75
ND < 0.75
NA
ND < 2.5 R
NA
ND < 2.5 R
NA
SV-12R-101315
10/13/2015
ND <0.14
ND <0.70
ND <0.70
ND <0.70
ND <0.70
NA
ND < 2.5
NA
ND < 2.5
NA
SV12R-121015
12/10/2015
ND <0.64
ND <0.64
ND <0.64
ND <1.3
ND <0.64
NA
NA
NA
I NA
NA
SV-12R-022916
02/29/2016
0.26
3.4
ND <0.70
0.45 J
ND <0.70
NA
5.0
NA
6.9
NA
SV-12R-041116
04/11/2016
ND <0.14
0.38 J
ND <0.71
ND <0.71
ND <0.71
NA
ND <2.5
NA
ND <2.5
NA
SV-12R-062716
06/27/2016
0.15 J
0.36 J
ND <0.77
ND <0.77
ND <0.77
NA
ND <2.5
NA
ND <2.5
NA
SV-12R-101816
10/18/2016
ND <0.16
0.54 J
ND <0.79
ND <0.79
ND <0.79
NA
ND <2.5
NA
I ND <2.5
NA
SV-12R-041817
04/18/2017
ND <0.15
ND <0.74
ND <0.74
ND <0.74
ND <0.74
NA
ND <2.5
NA
ND <2.5
NA
SV-12R-100917
10/09/2017
0.12 J
2.1
ND <0.75
ND <0.75
ND <0.75
NA
1.8 J
NA
0.6 J
NA
SV-12R-041718
04/17/2018
ND <0.14
0.36 J
0.31 J
1.4
0.65
J
NA
ND <2.5
NA
ND <2.5
NA
SV-12R-101718
10/17/2018
0.15 J
0.46 J
0.33 J
3.6 J
0.66
J
NA
ND <2.5
NA
6.1
NA
SV-12R-042419
04/24/2019
ND <2.6
ND <4.5
ND <3.5
2.9 J
1.5
J
NA
ND <9.4 J
NA
ND <4.2 J
NA
SV-12R-101719
10/17/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <1.7
NA
ND <2.6
NA
SV-12R-042220
04/22/2020
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <2.1
NA
ND <3.2
NA
SV-13
10/02/2007
1.2 J
0.75 J
0.57 J1
1.5 J
0.60
J
ND < 2.4
NA
ND < 4.7
NA
NA
SV-13
11/28/2007
ND < 1.8
2.10
0.95 J
2.8 J
1.10
J
ND < 1.8
NA
ND < 1.8
NA
NA
SV-13R-092314
09/23/2014
0.23
0.43
0.27 J
ND < 1.4
ND < 1.4
NA
ND < 2.5
NA
ND < 2.5
NA
SV-13R-042815
04/28/2015
0.16
ND < 0.78
ND < 0.78
ND < 0.78
ND < 0.78
NA
1.3 J
NA
0.7 J
NA
SV-13R-101315
10/13/2015
0.11 J
1.5
ND <0.66
1 ND <0.66
ND <0.66
NA
ND < 2.5
NA
ND < 2.5
NA
SV-13R-101718
10/17/2018
0.64
5.3
1.6 J
15
2.8
NA
ND <2.5
NA
ND <2.5
NA
SV-13R-042220
04/22/2020
0.49 J
ND <4.5
ND <3.5
1.4 J
0.77
J
NA
ND <2.1
NA
ND <3.2
NA
Soil Gas Screening Criteria
120
34800
374
695
695
21
21
NS
NS
695
Soil Gas Screening Criteria°
120
35000
370
700
700
21
21
NS
NS
700
Notes:
1 Sample analyzed at ALS Environmental
2 Sample analyzed at ASL/Eurofins Air Toxics
3 February 2018 North Carolina Department of Environmental Quality Division of Waste Management Residential Vapor Intrusion Screening Levels for Sub -Slab and
Exterior Soil Gas (SGSL) based on an attenuation factor of 0.03. https://files.nc.gov/ncdeq/Waste%20Management/DWM/SF/RiskBasedRemediation/Feb2018_Res_VISLs.pdf
4 EPA Vapor Intrusion Screening Levels (VISL) Calculator (AF = 0.03), TRL = 10-5 or THQ = 0.2, accessed June 19, 2019. https://epa-visl.ornl.gov/cgi-bin/visl_search
'The method detection limit is presented for samples analyzed by TO-17.
Bold text with gray highlighting indicates exceedance of one or more screening criteria
< = Indicates value is less than the shown reporting limit
pg/m3 = micrograms per cubic meter
AF = attenuation factor
B = analyte detected in both the sample and associated method blank
EPA = U.S. Environmental Protection Agency
J = estimated value
NA = not analyzed
ND = not detected
NS = no soil gas screening criteria available
R = data were rejected during validation
TRL = Target Risk Level
THQ = Target Hazard Quotient
X = excluded. Preferred analytical method for 2-Methyl naphthalene is TO-17. See case narrative in laboratory report.
Page 1 of 1

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KinderMorgan\358526PoplarTent\Reports\Groundwater Monitoring Reports\2018 Annual Report\Figures\CADD

Attachment A
Laboratory Analytical Report

.;acobs
Memorandum
14120 Ballantyne Corporate Place, Suite 200
Charlotte, North Carolina 28277
United States
T +1.704.544.4040
F +1.704.544.4041
www.jacobs.com
Subject Data Validation Summary — Plantation Pipe Line Poplar Tent Road Site Soil Vapor
Project Name Plantation Pipe Line Poplar Tent Road Site
Attention Kelly Gutowski/CLT, Jacobs
Mike Skeean/CLT, Jacobs
From Tiffany Davis/GNV, Jacobs
Date May 18, 2020
Copies to Juan Acaron/GNV, Jacobs
1. Introduction
The purpose of this memorandum is to present the results of the data validation process for the soil vapor
samples collected at the Plantation Pipe Line Company (PPL) Poplar Tent Road Site located in Concord,
North Carolina. The samples were collected in April 2020.
Samples were submitted to Eurofins TestAmerica, Knoxville in Tennessee for the following analyses:
• TO15 SIM Volatiles
• TO17 VolatiLes
These data were validated for compliance with the analytical method requirements. This process included
a review of these data to assess the accuracy, precision, and completeness based upon procedures
described in guidance documents such as the Environmental Protection Agency (EPA) National Functional
Guidelines for Organic Data Review (EPA 2017) and the USEPA, Compendium of Methods for the
Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA 1999). The Quality
assurance/quality control (QA/QC) summary forms and data reports were reviewed and the resulting
findings are documented within each subsection that follows.
During the data validation, if QA/QC parameters were not within the acceptance limits, associated sample
results were appended with a primary qualifying flag that indicated a possible anomaly with these data.
The qualifying flags originated during the data review and validation processes. This qualification also
included the use of secondary sub -qualifier flags. The secondary qualifiers provide the reasoning behind
the assignment of a qualifier to these data. The definitions of the primary qualifiers are presented below.

Data Validation Summary — Plantation Pipe Line Poplar Tent Road Site Soil Vapor
2. Validation Flag Definitions
The following primary qualifiers were used to qualify the data:
[=]: Detected. The analyte was analyzed for and detected at the concentration shown.
[J]: Estimated. The analyte was present but the reported value may not be accurate or precise.
[U]: Undetected. The analyte was analyzed for but not detected above the method detection limit.
[UJ]: Detection limit estimated. The analyte was analyzed for but qualified as not detected; the detection
Limit is estimated.
[R]: Rejected. The data are not useable.
[X]: Excluded. Data were not used due to another value being more appropriate.
3. Organic Parameters
3.1 Quality Control Review
The following list represents the QA/QC measures that were reviewed during the data quality evaluation
procedure for organic data:
• Holding Times. The holding times are evaluated to verify that samples were extracted and analyzed
within holding times.
• Blank samples. Method blank samples were provided for this project. Blank samples enable the
reviewer to determine if an analyte may be attributed to sampling or laboratory procedures, rather
than environmental contamination from site activities.
• Surrogate Recoveries. A surrogate compound is added to each sample and the recovery is used to
monitor lab performance and possible matrix interference.
• Lab Control Sample (LCS). These samples are a "controlled matrix", such as humidified nitrogen, in
which target compounds have been added prior to extraction/analysis. The recoveries serve as a
monitor of the overall performance of each step during the analysis, including sample preparation.
• Matrix Spike/Matrix Spike Duplicate (MS/MSD) Samples. Spike recovery is used to evaluate potential
matrix interferences, as well as accuracy. Precision information is also determined by calculating the
reproducibility between the recoveries of each spiked parameter.
• Field Duplicate Samples. These samples are collected to determine precision between a native and its
duplicate. This information can only be determined when target compounds are detected.
4. Volatile Organic Compound Analyses
The QA/QC parameters for VOC analyses by EPA Methods TO-15 and TO-17 for all samples were within
acceptable control limits with the exceptions listed below. A brief overview of the data evaluation follows:
4.1 Holding Times (and Sample Receipt)
All holding time requirements were met.

Data Validation Summary — Plantation Pipe Line Poplar Tent Road Site Soil Vapor
4.2 Analytical Blanks
No target analytes were detected in the blanks.
4.3 Recoveries — Surrogates, MS/MSD, LCS/LCSD
Surrogates and LCS/LCSD recoveries all met acceptance criteria. A MS/MSD set was not collected for this
event.
4.4 Field Duplicates
Duplicate field samples were collected and submitted to the laboratory for analysis. There are two
conditions under which the native and field duplicate are deemed outside acceptance criteria. For
condition one, if a result for the native and field duplicate are less than five times the reporting limit, the
two results must be within one times the reporting limit to meet acceptance criteria. In condition two, if the
result is greater than five times the reporting limit, the two results must agree to within 20 percent relative
percent difference to meet acceptance criteria. All acceptance criteria were met.
5. PARCC
Precision is defined as the agreement between duplicate results, and was estimated by comparing
duplicate LCS recoveries, and field duplicate sample results. The precision between the native and field
duplicate sample results for all analyses were within acceptable criteria indicating that the sample matrix
did not interfere with the overall analytical process.
Accuracy is a measure of the agreement between an experimental determination and the true value of the
parameter. In the case of organic analysis, each of the samples were spiked with a surrogate compound
with a known concentration before preparation. The surrogate data provides a measure of the matrix
effects as they may affect accuracy and precision of the analytical method. The LCS results demonstrate
accuracy of the method. Spike recoveries were within the method acceptance limits, showing no evidence
of matrix interferences that affect the usability of the data.
Representativeness criteria are a qualitative measure of the degree to which sample data accurately and
precisely represent a characteristic environmental condition. Representativeness is a subjective parameter
and is used to evaluate the efficacy of the sampling plan design. Representativeness was demonstrated by
providing full descriptions in the project scoping documents of the sampling techniques and the rationale
used for selecting sampling locations.
Comparability is another qualitative measure designed to express the confidence with which one data set
may be compared to another. Factors that affect comparability are sample collection and handling
techniques, sample matrix type, and analytical method. Comparability is limited by the other PARCC
parameters because data sets can be compared with confidence only when precision and accuracy are
known. Data from this investigation are comparable with other previous data collected at the site due to
the laboratories use of EPA or appropriate methods to analyze the samples and supported by the results
of the laboratory's analytical reports.
Completeness is defined as the percentage of measurements that are judged to be valid compared to the
total number of measurements made. There were no data rejected and or seen as not usable due to
quality control or sampling issues.

Data Validation Summary — Plantation Pipe Line Poplar Tent Road Site Soil Vapor
6. Conclusion
A review of the laboratory's analytical data submitted regarding the investigation of PPL Poplar Tent Road
soil vapor sampling event in April 2020 by Jacobs has been completed. The validation demonstrated that
the analytical systems were in control at the time of sample analyses and all data results can be used in
the decision -making process as qualified by the data validation process.

urofins
Environment Testing
America
ANALYTICAL REPORT
Eurofins TestAmerica, Knoxville
5815 Middlebrook Pike
Knoxville, TN 37921
Tel: [phone]
Laboratory Job ID: 140-18934-1
Client Project/Site: Poplar Tent Road
CH2M Hill, Inc.
14120 Ballantyne Corporate Place
Suite 200
Charlotte, North Carolina 28277
Attn: Mike Skeean
Authorized for release by.
51812020 10:55:22 AM
Jamie McKinney, Senior Project Manager
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC and 2009 TNI requirements for accredited
parameters, exceptions are noted in this report. This report may not be reproduced except in full,
and with written approval from the laboratory. For questions please contact the Project Manager
at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Table of Contents
Laboratory Job ID: 140-18934-1
CoverPage ..............................................
1
Table of Contents .........................................
2
Definitions/Glossary.......................................
3
Case Narrative ...........................................
4
Detection Summary ........................................
5
Client Sample Results ......................................
6
Default Detection Limits ....................................
9
Surrogate Summary .......................................
10
QC Sample Results ........................................
11
QC Association Summary ...................................
12
Lab Chronicle ............................................
13
Certification Summary ......................................
15
Method Summary .........................................
16
Sample Summary .........................................
17
Chain of Custody ..........................................
18
Receipt Checklists .........................................
20
Eurofins TestAmerica, Knoxville
Page 2 of 20 5/8/2020

Definitions/Glossary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Qualifiers
Air - GUMS VOA
Qualifier Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Glossary
Abbreviation 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
%R Percent Recovery
CFL Contains Free Liquid
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)
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
PQL Practical Quantitation Limit
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)
Job ID: 140-18934-1
Eurofins TestAmerica, Knoxville
Page 3 of 20 5/8/2020

Case Narrative
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-18934-1
Laboratory: Eurofins TestAmerica, Knoxville
Narrative
Job ID: 140-18934-1
0
Job Narrative
140-18934-1
Comments
No additional comments.
Receipt
The samples were received on 4/24/2020 8:30 AM; the samples arrived in good condition, properly preserved and, where required, on ice
Air - GC/MS VOA
Methods TO 14A, TO 15 LL, TO-14A, TO-15: EPA methods TO-14A and TO-15 specify the use of humidified "zero air" as the blank reagent
for canister cleaning, instrument calibration and sample analysis. Ultra -high purity humidified nitrogen from a cryogenic reservoir is used
in place of "zero air" by Eurofins TestAmerica Knoxville.
Methods TO 14A, TO 15 LL, TO-14A, TO-14A Low, TO-15: The Initial Calibration for Methylene Chloride did not meet the %RSD criterion
specified in the standard operating procedure for average response factor. An linear calibration model was selected which met the
acceptance criterion for coefficient of determination (r2) at 0.998 and the read back criteria for the individual calibration points. (ICIS
140-39179/9)
Methods TO 15 LL, TO-15: Although the BFB is flagged as outside control limits for TO-14 on batch 140-39269, the results are within limits
for TO-15, which is required for this project.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Eurofins TestAmerica, Knoxville
Page 4 of 20 5/8/2020

Detection Summary
Client: CH21VI Hill, Inc.
Job ID: 140-18934-1
Project/Site: Poplar Tent Road
Client Sample ID: SV-12R-042220
Lab Sample ID: 140-18934-1
ENo Detections.
Client Sample ID: SV-13R-042220
Lab Sample ID: 140-18934-2
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.15
J
0.80
0.080
ppb v/v
1 TO 15 LL Total/NA
m-Xylene & p-Xylene 0.31
J
0.80
0.29
ppb v/v
1 TO 15 LL Total/NA
o-Xylene 0.18
J
0.80
0.15
ppb v/v
1 TO 15 LL Total/NA
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.49
J
2.6
0.26
ug/m3
1 TO 15 LL Total/NA
m-Xylene & p-Xylene 1.4
J
3.5
1.3
ug/m3
1 TO 15 LL Total/NA
o-Xylene 0.77
J
3.5
0.65
ug/m3
1 TO 15 LL Total/NA
Client Sample ID: SV-10R2-042220
Lab Sample ID: 140-18934-3
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.080
J
0.80
0.080
ppb v/v
1 TO 15 LL Total/NA
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.26
J
2.6
0.26
ug/m3
1 TO 15 LL Total/NA
Client Sample ID: SV-14R-042220
Lab Sample ID: 140-18934-4
ENo Detections.
Client Sample ID: SV-5R-042220
Lab Sample ID: 140-18934-5
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.088
J
0.80
0.080
ppb v/v
1 TO 15 LL Total/NA
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.28
J
2.6
0.26
ug/m3
1 TO 15 LL Total/NA
Client Sample ID: SV-5RD-042220
Lab Sample ID: 140-18934-6
ENo Detections
This Detection Summary does not include radiochemical test results.
Eurofins TestAmerica, Knoxville
Page 5 of 20 5/8/2020

Client Sample Results
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-18934-1
Client Sample ID: SV-12R-042220 Lab Sample ID: 140-18934-1
Date Collected: 04/22/20 09:15 Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte
Result Qualifier
RL
MDL
Unit D Prepared
Benzene
ND
0.80
0.080
ppb v/v
Ethylbenzene
ND
0.80
0.13
ppb v/v
Toluene
ND
1.2
0.78
ppb v/v
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
o-Xylene
ND
0.80
0.15
ppb v/v
Analyzed Dil Fac
04/27/20 14:42
1
U
04/27/20 14:42
1
04/27/20 14:42
1
04/27/20 14:42
1
04/27/20 14:42
1
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed
Dil Fac
Benzene
ND
2.6
0.26
ug/m3
04/27/20 14:42
1
Ethylbenzene
ND
3.5
0.56
ug/m3
04/27/20 14:42
1
Toluene
ND
4.5
2.9
ug/m3
04/27/20 14:42
1
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
04/27/20 14:42
1
o-Xylene
ND
3.5
0.65
ug/m3
04/27/20 14:42
1
Surrogate
%Recovery Qualifier
Limits
Prepared Analyzed
Dil Fac
4-Bromofluorobenzene (Surr)
98
60 - 140
04127120 14:42
1
Client Sample ID: SV-13R-042220
Lab Sample ID: 140-18934-2
Date Collected: 04/22/20 12:20
Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Method: TO 15 LL - Volatile Organic Compounds
in Ambient Air, Low Concentration (GC/MS)
Analyte Result
Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene 0.15
J
0.80
0.080
ppb v/v
04/27/20 15:24 1
Ethylbenzene ND
0.80
0.13
ppb v/v
04/27/20 15:24 1
Toluene ND
1.2
0.78
ppb v/v
04/27/20 15:24 1
m-Xylene & p-Xylene 0.31
J
0.80
0.29
ppb v/v
04/27/20 15:24 1
o-Xylene 0.18
J
0.80
0.15
ppb v/v
04/27/20 15:24 1
Analyte Result
Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene 0.49
J
2.6
0.26
ug/m3
04/27/20 15:24 1
Ethylbenzene ND
3.5
0.56
ug/m3
04/27/20 15:24 1
Toluene ND
4.5
2.9
ug/m3
04/27/20 15:24 1
m-Xylene & p-Xylene 1.4
J
3.5
1.3
ug/m3
04/27/20 15:24 1
o-Xylene 0.77
J
3.5
0.65
ug/m3
04/27/20 15:24 1
Surrogate %Recovery
Qualifier
Limits
Prepared Analyzed Dil Fac
4-Bromofluorobenzene (Surr) 103
60 - 140
04127120 15:24 1
Client Sample ID: SV-10R2-042220
Lab Sample ID: 140-18934-3
Date Collected: 04/22/20 13:24
Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte Result Qualifier RL MDL Unit D Prepared
Analyzed
Dil Fac
Benzene
0.080 J
0.80
0.080
ppb v/v
04/27/20 16:54
1
Ethylbenzene
ND
0.80
0.13
ppb v/v
04/27/20 16:54
1
Toluene
ND
1.2
0.78
ppb v/v
04/27/20 16:54
1
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
04/27/20 16:54
1
o-Xylene
ND
0.80
0.15
ppb v/v
04/27/20 16:54
1
Eurofins TestAmerica, Knoxville
Page 6 of 20 5/8/2020

Client Sample Results
Client: CH2M Hill, Inc.
Job ID: 140-18934-1
Project/Site: Poplar Tent Road
Client Sample ID: SV-10R2-042220
Lab Sample ID: 140-18934-3
Date Collected: 04/22/20 13:24
Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Analyte Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene 0.26 J
2.6
0.26
ug/m3
04/27/2016:54 1
Ethylbenzene ND
3.5
0.56
ug/m3
04/27/2016:54 1
Toluene ND
4.5
2.9
ug/m3
04/27/2016:54 1
m-Xylene & p-Xylene ND
3.5
1.3
ug/m3
04/27/20 16:54 1
o-Xylene ND
3.5
0.65
ug/m3
04/27/2016:54 1
Surrogate %Recovery Qualifier
Limits
Prepared Analyzed Dil Fac
4-Bromofluorobenzene (Surr) 98
60 - 140
04127120 16:54 1
Client Sample ID: SV-14R-042220
Lab Sample ID: 140-18934-4
Date Collected: 04/22/20 14:01
Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte Result Qualifier RL MDL Unit D Prepared
Analyzed
Dil Fac
Benzene
ND
0.80
0.080
ppb v/v
04/27/20 17:37
1
Ethylbenzene
ND
0.80
0.13
ppb v/v
04/27/20 17:37
1
Toluene
ND
1.2
0.78
ppb v/v
04/27/20 17:37
1
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
04/27/20 17:37
1
o-Xylene
ND
0.80
0.15
ppb v/v
04/27/20 17:37
1
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene
ND
2.6
0.26
ug/m3
04/27/20 17:37 1
Ethylbenzene
ND
3.5
0.56
ug/m3
04/27/20 17:37 1
Toluene
ND
4.5
2.9
ug/m3
04/27/20 17:37 1
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
04/27/20 17:37 1
o-Xylene
ND
3.5
0.65
ug/m3
04/27/20 17:37 1
Surrogate
%Recovery Qualifier
Limits
Prepared Analyzed Dil Fac
4-Bromofluorobenzene (Surr)
103
60 - 140
04127120 17:37 1
Client Sample ID: SV-5R-042220
Lab Sample ID: 140-18934-5
Date Collected: 04/22/20 14:54
Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte
Result
Qualifier
RL
MDL
Unit D Prepared
Analyzed
Dil Fac
Benzene
0.088
J
0.80
0.080
ppb v/v
04/27/20 18:20
1
Ethylbenzene
ND
0.80
0.13
ppb v/v
04/27/20 18:20
1
Toluene
ND
1.2
0.78
ppb v/v
04/27/20 18:20
1
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
04/27/20 18:20
1
o-Xylene
ND
0.80
0.15
ppb v/v
04/27/20 18:20
1
Analyte
Result
Qualifier
RL
MDL
Unit D Prepared
Analyzed
Dil Fac
Benzene
0.28
J
2.6
0.26
ug/m3
04/27/20 18:20
1
Ethylbenzene
ND
3.5
0.56
ug/m3
04/27/20 18:20
1
Toluene
ND
4.5
2.9
ug/m3
04/27/20 18:20
1
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
04/27/20 18:20
1
o-Xylene
ND
3.5
0.65
ug/m3
04/27/20 18:20
1
Eurofins TestAmerica, Knoxville
Page 7 of 20 5/8/2020

Client Sample Results
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-18934-1
Client Sample ID: SV-5R-042220 Lab Sample ID: 140-18934-5
Date Collected: 04/22/20 14:54 Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Surrogate %Recovery Qualifier Limits
4-Bromofluorobenzene (Surr) 99 60 - 140
Client Sample ID: SV-5RD-042220
Date Collected: 04/22/20 14:54
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Prepared Analyzed Dil Fac
04127120 18:20 1 F1
Lab Sample ID: 140-18934-6
Matrix: Air
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte
Result Qualifier
RL
MDL
Unit D Prepared
Benzene
ND
0.80
0.080
ppb v/v
Ethylbenzene
ND
0.80
0.13
ppb v/v
Toluene
ND
1.2
0.78
ppb v/v
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
o-Xylene
ND
0.80
0.15
ppb v/v
Analyte
Result Qualifier
RL
MDL
Unit D Prepared
Benzene
ND
2.6
0.26
ug/m3
Ethylbenzene
ND
3.5
0.56
ug/m3
Toluene
ND
4.5
2.9
ug/m3
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
o-Xylene
ND
3.5
0.65
ug/m3
Surrogate %Recovery Qualifier Limits
4-Bromofluorobenzene (Surr) 103 60 - 140
Analyzed Dil Fac
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
Analyzed
Dil Fac
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
Prepared Analyzed Dil Fac
04127120 19:02 1
Eurofins TestAmerica, Knoxville
Page 8 of 20 5/8/2020

Default Detection Limits
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-18934-1
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte
RL
MDL
Units
Benzene
0.080
0.0080
ppb v/v
Benzene
0.26
0.026
ug/m3
Ethylbenzene
0.080
0.013
ppb v/v
Ethylbenzene
0.35
0.056
ug/m3
m-Xylene & p-Xylene
0.080
0.029
ppb v/v
m-Xylene & p-Xylene
0.35
0.13
ug/m3
o-Xylene
0.080
0.015
ppb v/v
o-Xylene
0.35
0.065
ug/m3
Toluene
0.12
0.078
ppb v/v
Toluene
0.45
0.29
ug/m3
Eurofins TestAmerica, Knoxville
Page 9 of 20 5/8/2020

Surrogate Summary
Client: CH2M Hill, Inc.
Job ID: 140-18934-1
Project/Site: Poplar Tent Road
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Matrix: Air
Prep Type: Total/NA
Percent Surrogate Recovery (Acceptance Limits)
BFB
Lab Sample ID Client Sample ID
(60-140)
140-18934-1 SV-12R-042220
98
140-18934-2 SV-13R-042220
103
140-18934-3 SV-10R2-042220
98
140-18934-4 SV-14R-042220
103
140-18934-5 SV-5R-042220
99
140-18934-6 SV-5RD-042220
103
LCS 140-39269/1009 Lab Control Sample
103
MB 140-39269/11 Method Blank
98
Surrogate Legend
BFB = 4-Bromofluorobenzene (Surr)
Eurofins TestAmerica, Knoxville
Page 10 of 20 5/8/2020

QC Sample Results
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-18934-1
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Lab Sample ID: MB 140-39269/11
Client Sample ID: Method Blank
Matrix: Air
Prep Type: Total/NA
Analysis Batch: 39269
MB MB
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene
ND
0.080
0.0080
ppb v/v
04/27/20 13:57 1
Ethylbenzene
ND
0.080
0.013
ppb v/v
04/27/20 13:57 1
Toluene
ND
0.12
0.078
ppb v/v
04/27/20 13:57 1
m-Xylene & p-Xylene
ND
0.080
0.029
ppb v/v
04/27/20 13:57 1
o-Xylene
ND
0.080
0.015
ppb v/v
04/27/20 13:57 1
MB
MB
Analyte
Result
Qualifier
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
Benzene
ND
0.26
0.026
ug/m3
04/27/20 13:57
1
Ethylbenzene
ND
0.35
0.056
ug/m3
04/27/20 13:57
1
Toluene
ND
0.45
0.29
ug/m3
04/27/20 13:57
1
m-Xylene & p-Xylene
ND
0.35
0.13
ug/m3
04/27/20 13:57
1
o-Xylene
ND
0.35
0.065
ug/m3
04/27/20 13:57
1
MB
MB
Surrogate
%Recovery
Qualifier
Limits
Prepared
Analyzed
Dil Fac
4-Bromofluorobenzene (Surr)
98
60 -
140
04/27/20 13
1
Lab Sample ID: LCS 140-39269/1009
Client
Sample ID:
Lab Control Sample
Matrix: Air
Prep Type: Total/NA
Analysis Batch: 39269
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier
Unit
D %Rec
Limits
Benzene
1.00
1.07
ppb v/v
107
70 -130
Ethylbenzene
1.00
1.06
ppb v/v
106
70 -130
Toluene
1.00
1.08
ppb v/v
108
70 -130
m-Xylene & p-Xylene
2.00
2.16
ppb v/v
108
70 -130
o-Xylene
1.00
1.09
ppb v/v
109
70 -130
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier
Unit
D %Rec
Limits
Benzene
3.2
3.41
ug/m3
107
70 -130
Ethylbenzene
4.3
4.59
ug/m3
106
70 -130
Toluene
3.8
4.07
ug/m3
108
70 -130
m-Xylene & p-Xylene
8.7
9.37
ug/m3
108
70 -130
o-Xylene
4.3
4.73
ug/m3
109
70 -130
LCS LCS
Surrogate
%Recovery Qualifier
Limits
4-Bromofluorobenzene (Surr)
103
60 - 140
Eurofins TestAmerica, Knoxville
Page 11 of 20 5/8/2020

QC Association Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-18934-1
Air - GUMS VOA
Analysis Batch: 39269
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method Prep Batch
140-18934-1
SV-12R-042220
Total/NA
Air
TO 15 LL
140-18934-2
SV-13R-042220
Total/NA
Air
TO 15 LL
140-18934-3
SV-10R2-042220
Total/NA
Air
TO 15 LL
140-18934-4
SV-14R-042220
Total/NA
Air
TO 15 LL
140-18934-5
SV-5R-042220
Total/NA
Air
TO 15 LL
140-18934-6
SV-5RD-042220
Total/NA
Air
TO 15 LL
MB 140-39269/11
Method Blank
Total/NA
Air
TO 15 LL
LCS 140-39269/1009
Lab Control Sample
Total/NA
Air
TO 15 LL
Eurofins TestAmerica, Knoxville
Page 12 of 20 5/8/2020

Lab Chronicle
Client: CH21VI Hill, Inc.
Job ID: 140-18934-1
Project/Site: Poplar Tent Road
Client Sample ID: SV-12R-042220
Lab Sample ID: 140-18934-1
Date Collected: 04/22/20 09:15
Matrix: Air
Date Received: 04/24/20 08:30
F Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 mL 39269 04/27/20 14:42 S1K TAL KNX
Instrument ID: MG
Client Sample ID: SV-13R-042220
Lab Sample ID: 140-18934-2
Date Collected: 04/22/20 12:20
Matrix: Air
Date Received: 04/24/20 08:30
Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 mL 39269 04/27/20 15:24 S1K TAL KNX
Instrument ID: MG
Client Sample ID: SV-10R2-042220
Lab Sample ID: 140-18934-31
Date Collected: 04/22/20 13:24
Matrix: Air W
Date Received: 04/24/20 08:30
Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 mL 39269 04/27/20 1654 S1K TAL KNX
Instrument ID: MG
Client Sample ID: SV-14R-042220
Lab Sample ID: 140-18934-4
Date Collected: 04/22/20 14:01
Matrix: Air
Date Received: 04/24/20 08:30
Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 ­mL 39269 04/27/20 17:37 S1K TAL KNX
Instrument ID: MG
Client Sample ID: SV-5R-042220
Lab Sample ID: 140-18934-5
Date Collected: 04/22/20 14:54
Matrix: Air
Date Received: 04/24/20 08:30
F Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 mL 39269 04/27/20 18:20 S1K TAL KNX
Instrument ID: MG
Client Sample ID: SV-5RD-042220
Lab Sample ID: 140-18934-6
Date Collected: 04/22/20 14:54
Matrix: Air
Date Received: 04/24/20 08:30
Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 ­mL 39269 04/27/20 19:02 S1K TAL KNX
Instrument ID: MG
Eurofins TestAmerica, Knoxville
Page 13 of 20 5/8/2020

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-18934-1
Client Sample ID: Method Blank Lab Sample ID: MB 140-39269/11
Date Collected: N/A Matrix: Air
Date Received: N/A
Batch Batch
Dil
Initial
Final Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount Number
or Analyzed
Analyst
Lab
Total/NA Analysis TO 15 LL
1
500 mL
500 mL 39269
04/27/20 13:57
S1K
TAL KNX
Instrument ID: MG
Client Sample ID: Lab Control Sample
Lab Sample ID: LCS
140-39269/1009
Date Collected: N/A
Matrix: Air
Date Received: N/A
Batch Batch
Dil
Initial
Final Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount Number
or Analyzed
Analyst
Lab
Total/NA Analysis TO 15 LL
1
500 mL
500 mL 39269
04/27/20 11:07
S1K
TAL KNX
Instrument ID: MG
Laboratory References:
TAL KNX = Eurofins TestAmerica, Knoxville, 5815 Middlebrook
Pike, Knoxville, TN 37921, TEL [phone]
Page 14 of 20
Eurofins TestAmerica, Knoxville
5/8/2020

Accreditation/Certification Summary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Laboratory: Eurofins TestAmerica, Knoxville
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority
Program
Identification Number
Expiration Date
AFCEE
N/A
ANAB
Dept. of Defense ELAP
L2311
02-13-22
ANAB
Dept. of Energy
L2311.01
02-13-22
ANAB
ISO/IEC 17025
L2311
02-13-22
ANAB
ISO/IEC 17025
L2311
02-14-22
Arkansas DEQ
State
88-0688
06-16-20
California
State
2423
06-30-20
Colorado
State
TN00009
02-28-21
Connecticut
State
PH-0223
09-30-21
Florida
NELAP
E87177
06-30-20
Georgia (DW)
State
906
12-11-22
Hawaii
State
NA
12-11-21
Kansas
NELAP
E-10349
11-01-20
Kentucky (DW)
State
90101
01-01-21
Louisiana
NELAP
83979
07-02-20
Louisiana (DW)
State
LA019
12-31-20
Maryland
State
277
03-31-21
Michigan
State
9933
12-11-22
Nevada
State
TN00009
07-31-20
New Hampshire
NELAP
299919
01-17-21
New Jersey
NELAP
TN001
06-30-20
New York
NELAP
10781
03-31-21
North Carolina (DW)
State
21705
07-31-20
North Carolina (WW/SW)
State
64
12-31-20
Ohio VAP
State
CL0059
08-28-20
Oklahoma
State
9415
09-01-20
Oregon
NELAP
TN I O189
01-02-21
Pennsylvania
NELAP
68-00576
12-31-20
Tennessee
State
02014
12-11-22
Texas
NELAP
T104704380-18-12
08-31-20
US Fish & Wildlife
US Federal Programs
058448
07-31-20
USDA
US Federal Programs
P330-19-00236
08-20-22
Utah
NELAP
TN00009
07-31-20
Virginia
NELAP
460176
09-15-20
Washington
State
C593
01-19-21
West Virginia (DW)
State
9955C
01-01-21
West Virginia DEP
State
345
04-30-20
Wisconsin
State
998044300
08-31-20
Job ID: 140-18934-1
Eurofins TestAmerica, Knoxville
Page 15 of 20 5/8/2020

Method Summary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Method Method Description Protocol
TO 15 LL Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) EPA
Protocol References:
EPA = US Environmental Protection Agency
Laboratory References:
TAL KNX = Eurofins TestAmerica, Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL [phone]
F
Job ID: 140-18934-1
Laboratory
TAL KNX
L
Eurofins TestAmerica, Knoxville
Page 16 of 20 5/8/2020

Sample Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-18934-1
Lab Sample ID
Client Sample ID
Matrix
Collected
Received
Asset ID
140-18934-1
SV-12R-042220
Air
04/22/2 009:15
04/24/2 008.30
Air Canister (1-Liter) #34001135
140-18934-2
SV-13R-042220
Air
04/22/20 12:20
04/24/20 08:30
Air Canister (1-Liter) #34000942
140-18934-3
SV-10R2-042220
Air
04/22/20 13:24
04/24/20 08:30
Air Canister (1-Liter) #11035
140-18934-4
SV-14R-042220
Air
04/22/20 14:01
04/24/20 08:30
Air Canister (1-Liter) #11766
140-18934-5
SV-5R-042220
Air
04/22/20 14:54
04/24/20 08:30
Air Canister (1-Liter) #11492
140-18934-6
SV-5RD-042220
Air
04/22/20 14:54
04/24/20 08:30
Air Canister (1-Liter) #11826
7
M
Eurofins TestAmerica, Knoxville
Page 17 of 20 5/8/2020

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Page 19 of 20
5/8/2020

Gauge ID:
Date:
G5
4/24/2020
TestAmerica Knoxville - Air Canister Initial Pressure Check
Analyst
Sample ID
Asset #
Cleaning
Job
Cert
Size
(L)
Pressure @
Receipt
(-in Hg or +psig)
Time
Comments
BRS
140-18934-a-1
34001135
18639
B
1
-4.7
11:39
BRS
140-18934-a-2
34000942
18639
B
1
1 -3.5
11:40
BRS
140-18934-a-3
11035
18639
B
1
-1.2
11:41
BRS
140-18934-a-4
11766
18639
B
1
-4.5
11:42
BRS
140-18934-a-5
11492
18639
B
1
-5.4
11:43
BRS
140-18934-a-6
11826
18639
B
1
-5.4
11:44
❑ Receiving —Air Can —Calve Open (NCM # )
❑ Air - Can P -24 to -25 " - Flow Contr. Works (NCM# )
❑ Air - Can P -24 to -25 " - Flow Contr. Faulty (NCM# )
❑ Air - Can P Out -26" - Flow Contr. Works (NCM# )
❑ Air - Can P Out -26" - Flow Comr. Faulty (NCM# )
❑ Air - Can P Low -24 to -25 " - Grab Sample (NCM# )
❑ Air - Can P Low -26 "- Grab Sample (NCM# )
16
I EARBMAIMAII�
Page 20 of 20
MS038 r14, 6/19/15
5/8/2020

urofins Environment Testing
America
ANALYTICAL REPORT
Eurofins TestAmerica, Knoxville
5815 Middlebrook Pike
Knoxville, TN 37921
Tel: [phone]
Laboratory Job ID: 140-19046-1
Laboratory Sample Delivery Group: WO 1910445
Client Project/Site: Poplar Tent Road
Foi
CH2M Hill, Inc.
14120 Ballantyne Corporate Place
Suite 200
Charlotte, North Carolina 28277
Attn: Mike Skeean
C
Authorized for release by:
51812020 3:59:56 PM
Jamie McKinney, Senior Project Manager
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC and 2009 TNI requirements for accredited
parameters, exceptions are noted in this report. This report may not be reproduced except in full,
and with written approval from the laboratory. For questions please contact the Project Manager
at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Table of Contents
Laboratory Job ID: 140-19046-1 F
SDG: WO 1910445
U
CoverPage ..............................................
1
Table of Contents .........................................
2
Definitions/Glossary.......................................
3
Case Narrative ...........................................
4
Detection Summary ........................................
5
Client Sample Results ......................................
6
Surrogate Summary .......................................
8
QC Sample Results ........................................
9
QC Association Summary ...................................
10
Lab Chronicle ............................................
11
Method Summary .........................................
13
Sample Summary .........................................
14
Chain of Custody ..........................................
15
Eurofins TestAmerica, Knoxville
Page 2 of 15 5/8/2020

Definitions/Glossary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Qualifiers
Subcontract
Qualifier Qualifier Description
U COMPOUND ANALYZED FOR BUT NOT DETECTED ABOVE THE DETECTION LIMIT
Glossary
Abbreviation 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
%R Percent Recovery
CFL Contains Free Liquid
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)
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
PQL Practical Quantitation Limit
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)
Job ID: 140-19046-1
SDG: WO 1910445
Eurofins TestAmerica, Knoxville
Page 3 of 15 5/8/2020

Case Narrative
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-19046-1
Laboratory: Eurofins TestAmerica, Knoxville
Narrative
Job Narrative
140-19046-1
Job ID: 140-19046-1
SDG: WO 1910445
Receipt
The samples were received on 5/8/2020 3:16 PM; the samples arrived in good condition, properly preserved, and where required, on ice.
The temperature of the cooler at receipt time was
SUBCONTRACTING
The following analysis was subcontracted to Eurofins Air Toxics, Inc.:
T017 - naphthalene and 2-methyl naphthalene
Department Subcontract Lab non -Sister Lab
No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Eurofins TestAmerica, Knoxville
Page 4 of 15 5/8/2020

Detection Summary
Client: CH2M Hill, Inc. Job ID: 140-19046-1
Project/Site: Poplar Tent Road SDG: WO 1910445
Client Sample ID: SV-12R-042220 Lab Sample ID: 140-19046-1
ENo Detections.
Client Sample ID: SV-13R-042220 Lab Sample ID: 140-19046-2
ENo Detections.
Client Sample ID: SV-10R2-042220 Lab Sample ID: 140-19046-3
ENo Detections.
Client Sample ID: SV-14R-042220 Lab Sample ID: 140-19046-4
ENo Detections.
Client Sample ID: SV-5R-042220 Lab Sample ID: 140-19046-5 C
ENo Detections.
Client Sample ID: SV-5RD-042220 Lab Sample ID: 140-19046-6
INo Detections
This Detection Summary does not include radiochemical test results.
Eurofins TestAmerica, Knoxville
Page 5 of 15 5/8/2020

Client Sample Results
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Client Sample ID: SV-12R-042220
Date Collected: 04/22/20 09:38
Date Received: 05/08/20 15:16
Job ID: 140-19046-1
SDG: WO 1910445
Lab Sample ID: 140-19046-1
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
2-METHYLNAPHTHALENE ND U 25 3.2 UG/M3 04/27/2014:01 04/27/2014:01 1 !—
NAPHTHALENE ND U 25 2.1 UG/M3 04/27/2014:01 04/27/2014:01 1
Surrogate %Recovery Qualifier Limits Prepared Analyzed DY Fac
NAPHTHALENE-D8 75 50 - 150 04127120 14:01 04127120 14:01 1
Client Sample ID: SV-13R-042220
Date Collected: 04/22/20 12:24
Date Received: 05/08/20 15:16
Lab Sample ID: 140-19046-2
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte
Result
Qualifier
RL
MDL Unit D Prepared
Analyzed
Dil Fac
2-METHYLNAPHTHALENE
ND
U
25
3.2 UG/M3 04/27/2015:27
04/27/2015:27
1
NAPHTHALENE
ND
U
25
2.1 UG/M3 04/27/2015:27
04/27/2015:27
1
Surrogate
%Recovery
Qualifier
Limits
Prepared
Analyzed
Dil Fac
NAPHTHALENE-D8
69
50 - 150
04127120 15:27
04127120 15:27
1
Client Sample ID: SV-10R2-042220
Date Collected: 04/22/20 11:47
Date Received: 05/08/20 15:16
Lab Sample ID: 140-19046-3
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
2-METHYLNAPHTHALENE ND U 25 3.2 UG/M3 04/27/2016:55 04/27/2016:55 1
NAPHTHALENE ND U 25 2.1 UG/M3 04/27/2016:55 04/27/2016:55 1
Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac
NAPHTHALENE-D8 75 50 - 150 04/27120 16:55 04127120 16:55 1
Client Sample ID: SV-14R-042220
Date Collected: 04/22/20 14:11
Date Received: 05/08/20 15:16
Lab Sample ID: 140-19046-4
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte Result Qualifier
RL
MDL Unit D Prepared
Analyzed
Dil Fac
2-METHYLNAPHTHALENE ND U
25
3.2 UG/M3 04/27/2018:22
04/27/2018:22
1
NAPHTHALENE ND U
25
2.1 UG/M3 04/27/2018:22
04/27/2018:22
1
Surrogate %Recovery Qualifier
Limits
Prepared
Analyzed
Dil Fac
NAPHTHALENE-D8 72
50 - 150
04127120 18:22
04127120 18:22
1
Client Sample ID: SV-5R-042220
Date Collected: 04/22/20 15:11
Date Received: 05/08/20 15:16
Method: TO17 - General Subcontract Method
Analyte Result Qualifier
2-METHYLNAPHTHALENE ND U
NAPHTHALENE ND U
Surrogate
NAPHTHALENE-D8
RL MDL Unit
25 3.2 UG/M3
25 2.1 UG/M3
%Recovery Qualifier Limits
67 50-150
Lab Sample ID: 140-19046-5
Matrix: Air
D Prepared Analyzed Dil Fac
04/27/2019:49 04/27/2019:49 1
04/27/2019:49 04/27/2019:49 1
Prepared Analyzed Dil Fac
0412712019:49 0412712019:49 1
Eurofins TestAmerica, Knoxville
Page 6 of 15 5/8/2020

Client Sample Results
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Client Sample ID: SV-5RD-042220
Date Collected: 04/22/20 15:15
Date Received: 05/08/20 15:16
Job ID: 140-19046-1
SDG: WO 1910445
Lab Sample ID: 140-19046-6
Matrix: Air
Method: T017 - General Subcontract Method
Analyte
Result
Qualifier
RL
MDL Unit D Prepared
Analyzed
Dil Fac
2-METHYLNAPHTHALENE
ND
U
25
3.2 UG/M3 04/27/20 21:15
04/27/20 21:15
1 !—
NAPHTHALENE
ND
U
25
2.1 UG/M3 04/27/20 21:15
04/27/20 21:15
1
Surrogate
%Recovery
Qualifier
Limits
Prepared
Analyzed
Dil Fac
NAPHTHALENE-D8
72
50 - 150
04127120 21:15
04127120 21:15
1
F
F
Eurofins TestAmerica, Knoxville
Page 7 of 15 5/8/2020

Surrogate Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Method: T017 - General Subcontract Method
Matrix: Air
I
NPT
Lab Sample ID
Client Sample ID
(50-150)
140-19046-1
SV-12R-042220
75
140-19046-2
SV-13R-042220
69
140-19046-3
SV-10R2-042220
75
140-19046-4
SV-14R-042220
72
140-19046-5
SV-5R-042220
67
140-19046-6
SV-5RD-042220
72
Surrogate Legend
NPT = NAPHTHALENE-D8
Method: T017 - General Subcontract Method
Matrix: AIR
NPT
Lab Sample ID
Client Sample ID
(50-150)
2004484-07A
Method Blank
81
2004484-09A
Lab Control Sample
79
2004484-09AA
Lab Control Sample Dup
79
Surrogate Legend
NPT = NAPHTHALENE-D8
Job ID: 140-19046-1
SDG: WO 1910445
Prep Type: Total/NA
Percent Surrogate Recovery (Acceptance Limits)
Prep Type: Total/NA
Percent Surrogate Recovery (Acceptance Limits)
Eurofins TestAmerica, Knoxville
Page 8 of 15 5/8/2020

QC Sample Results
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Method: T017 - General Subcontract Method
Lab Sample ID: 2004484-07A
Matrix: AIR
Analysis Batch: 11042702
Blank Blank
Analyte Result Qualifier RL MDL Unit
2-METHYLNAPHTHALENE ND U 25 UG/M3
NAPHTHALENE ND U 25 UG/M3
Blank Blank
Job ID: 140-19046-1
SDG: WO 1910445
Client Sample ID: Method Blank
Prep Type: Total/NA
Prep Batch: 11042702_P
D Prepared Analyzed Dil Fac
04/27/2012:33 04/27/2012:33 1
04/27/2012:33 04/27/2012:33 1
Surrogate
%Recovery Qualifier Limits
Prepared Analyzed DY Fac
NAPHTHALENE-D8
81 50 - 150
04127120 12:33 04127120 12:33 1
Lab Sample ID: 2004484-09A
Client Sample ID: Lab Control Sample
C
Matrix: AIR
Prep Type: Total/NA
Analysis Batch: 11042702
Prep Batch: 11042702_P
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier
Unit D %Rec Limits
2-METHYLNAPHTHALENE
100
107
UG/M3 107 70-130
NAPHTHALENE
100
102
UG/M3 102 70-130
LCS LCS
Surrogate
%Recovery Qualifier
NAPHTHALENE-D8
79
Lab Sample ID: 2004484-09AA
Matrix: AIR
Analysis Batch: 11042702
Analyte
2-METHYLNAPHTHALENE
NAPHTHALENE
LCS Dup LCS Dup
Surrogate
%Recovery Qualifier
NAPHTHALENE-D8
79
Limits
50-150
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Prep Batch: 11042702 P
Spike
LCS Dup
LCS Dup %Rec. RPD
Added
Result
Qualifier Unit D %Rec Limits RPD Limit
100
ill
UG/M3 ill 70 -130 3.7 25
100
102
UG/M3 102 70-130 0 25
Limits
50-150
Eurofins TestAmerica, Knoxville
Page 9 of 15 5/8/2020

QC Association Summary
Client: CH21VI Hill, Inc.
Job ID: 140-19046-1
Project/Site: Poplar Tent
Road
SDG: WO 1910445
Subcontract
Analysis Batch: 11042702
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
140-19046-1
SV-12R-042220
Total/NA
Air
T017
11042702—P
140-19046-2
SV-13R-042220
Total/NA
Air
T017
11042702 P
140-19046-3
SV-10R2-042220
Total/NA
Air
T017
11042702_P
140-19046-4
SV-14R-042220
Total/NA
Air
T017
11042702 P
140-19046-5
SV-5R-042220
Total/NA
Air
T017
11042702 P
140-19046-6
SV-5RD-042220
Total/NA
Air
T017
11042702 P
2004484-07A
Method Blank
Total/NA
AIR
T017
11042702 P
2004484-09A
Lab Control Sample
Total/NA
AIR
T017
11042702_P
2004484-09AA
Lab Control Sample Dup
Total/NA
AIR
T017
11042702_P
Prep Batch: 11042702_P
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
140-19046-1
SV-12R-042220
Total/NA
Air
NONE
140-19046-2
SV-13R-042220
Total/NA
Air
NONE
140-19046-3
SV-10R2-042220
Total/NA
Air
NONE
140-19046-4
SV-14R-042220
Total/NA
Air
NONE
140-19046-5
SV-5R-042220
Total/NA
Air
NONE
140-19046-6
SV-5RD-042220
Total/NA
Air
NONE
2004484-07A
Method Blank
Total/NA
AIR
NONE
2004484-09A
Lab Control Sample
Total/NA
AIR
NONE
2004484-09AA
Lab Control Sample Dup
Total/NA
AIR
NONE
Eurofins TestAmerica, Knoxville
Page 10 of 15 5/8/2020

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-19046-1
SDG: WO 1910445
Client Sample ID: SV-12R-042220 Lab Sample ID: 140-19046-1
Date Collected: 04/22/20 09:38 Matrix: Air
Date Received: 05/08/20 15:16
Batch
Batch
Prep Type Type
Method Run
Total/NA Prep
NONE
Total/NA Analysis
T017
Instrument ID:
Client Sample ID: SV-13R-042220
Date Collected: 04/22/20 12:24
Date Received: 05/08/20 15:16
Batch Batch
Prep Type Type Method Run
Total/NA Prep NONE
Total/NA Analysis T017
Instrument ID:
Client Sample ID: SV-10R2-042220
Date Collected: 04/22/20 11:47
Date Received: 05/08/20 15:16
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
1 11042702 04/27/2014:01 Eurofins
_P
1 11042702 04/27/2014:01 SU Eurofins
L-du adulpiu mi: 1'*U- Iyu-Fv-c
Matrix: Air
Dil Initial
Final Batch
Prepared
F
Factor Amount
Amount Number
or Analyzed Analyst
Lab M
1
11042702
04/27/2015:27
Eurofins
_P
1
11042702
04/27/2015:27 SU
Eurofins
Lab Sample ID: 140-19046-3
Matrix: Air C
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Prep NONE
1
11042702
04/27/2016:55
Eurofins
_P
Total/NA Analysis T017
1
11042702
04/27/2016:55
SU
Eurofins
Instrument ID:
Client Sample ID: SV-14R-042220
Lab Sample
ID: 140-19046-4
Date Collected: 04/22/20 14:11
Matrix: Air
Date Received: 05/08/20 15:16
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Prep NONE
1
11042702
04/27/2018:22
Eurofins
_P
Total/NA Analysis T017
1
11042702
04/27/2018:22
SU
Eurofins
Instrument ID:
Client Sample ID: SV-5R-042220 Lab Sample ID: 140-19046-5
Date Collected: 04/22/20 15:11 Matrix: Air
Date Received: 05/08/20 15:16
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Prep NONE 1 11042702 04/27/2019:49 Eurofins
_P
Total/NA Analysis T017 1 11042702 04/27/2019:49 SU Eurofins
Instrument ID:
Page 11 of 15
Eurofins TestAmerica, Knoxville
5/8/2020

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-19046-1
SDG: WO 1910445
Client Sample ID: SV-5RD-042220 Lab Sample ID: 140-19046-6
Date Collected: 04/22/20 15:15 Matrix: Air
Date Received: 05/08/20 15:16
Batch
Batch
Prep Type Type
Method Run
Total/NA Prep
NONE
Total/NA Analysis
T017
Instrument ID:
Client Sample ID: Method Blank
Date Collected: N/A
Date Received: N/A
Batch Batch
Prep Type Type Method Run
Total/NA Prep NONE
Total/NA Analysis T017
Instrument ID:
Client Sample ID: Lab Control Sample
Date Collected: N/A
Date Received: N/A
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
1 11042702 04/27/20 21:15 Eurofins
_P
1 11042702 04/27/20 21:15 SU Eurofins
L-du adlmpiu iu. Zvu-+'+o-+-UIM
Matrix: AIR
Dil Initial
Final Batch
Prepared
Factor Amount
Amount Number
or Analyzed
Analyst Lab m
1
11042702
04/27/2012:33
Eurofins
_P
1
11042702
04/27/2012:33
SU Eurofins
Lab Sample ID: 2004484-09A
Matrix: AIR C
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method
Run Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Prep NONE
1
11042702
04/27/20 09:39
Eurofins
_P
Total/NA Analysis T017
1
11042702
04/27/20 09:39
SU
Eurofins
Instrument ID:
Client Sample ID: Lab Control Sample Dup
Lab
Sample ID:
2004484-09AA
Date Collected: N/A
Matrix: AIR
Date Received: N/A
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method
Run Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Prep NONE
1
11042702
04/27/2010:22
Eurofins
_P
Total/NA Analysis T017
1
11042702
04/27/2010:22
SU
Eurofins
Instrument ID:
Laboratory References:
Eurofins = Eurofins Air Toxics, 180 Blue Ravine Road, Suite B, Folsom, CA 95630
Page 12 of 15
Eurofins TestAmerica, Knoxville
5/8/2020

Method Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Method Method Description Protocol
Subcontract T017 - naphthalene and 2-methylnaphthalene None
Protocol References:
None = None
Laboratory References:
Eurofins = Eurofins Air Toxics, 180 Blue Ravine Road, Suite B, Folsom, CA 95630
F
Job ID: 140-19046-1
SDG: WO 1910445
Laboratory
Eurofins
L
Eurofins TestAmerica, Knoxville
Page 13 of 15 5/8/2020

Sample Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-19046-1
SDG: WO 1910445
Lab Sample ID
Client Sample ID
Matrix
Collected
Received Asset ID
140-19046-1
SV-12R-042220
Air
04/22/20 09:38
05/08/20 15:16
140-19046-2
SV-13R-042220
Air
04/22/2012:24
05/08/2015:16
140-19046-3
SV-10R2-042220
Air
04/22/2011:47
05/08/2015:16
140-19046-4
SV-14R-042220
Air
04/22/2014:11
05/08/2015:16
140-19046-5
SV-5R-042220
Air
04/22/2015:11
05/08/2015:16
140-19046-6
SV-5RD-042220
Air
04/22/2015:15
05/08/2015:16
Eurofins TestAmerica, Knoxville
Page 14 of 15 5/8/2020

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5/8/2020

.;acobs
May 29, 2020
Delivered via email (wilsoda(@amail.com)
Mr. and Mrs. Derek Wilson
1243 Middlecrest Drive NW
Concord, North Carolina 28027
Subject: Results from Recent Soil Vapor Monitoring
Plantation Pipe Line Company
Poplar Tent Road Site
NCDEQ Groundwater Incident No. 88110
Dear Mr. and Mrs. Wilson,
14120 Ballantyne Corporate Place, Suite 200
Charlotte, North Carolina 28277
United States
T +1.704.544.4040
F +1.704.544.4041
www.jacobs.com
Thank you for allowing us to conduct semiannual soil vapor monitoring activities on your property in
April 2020 on behalf of Plantation Pipe Line Company (Plantation). The purpose of this letter is to provide
a summary of the monitoring activities conducted on your property, along with a summary of the
analytical results.
April 2020 Monitoring Activities
On April 14, 2020, Jacobs sent you an email requesting access to your property to collect samples from
soil vapor monitoring points SV-5R and SV-14R (see attached figure). On April 22, 2020, leak checks were
conducted on each soil vapor monitoring point prior to collecting a vapor sample. Both soil vapor
monitoring points passed the leak check and were purged with an electric sampling pump prior to sample
collection. Soil vapor samples were then collected using vacuum canisters and sampling syringes with
charcoal tubes. The samples were submitted to Eurofins TestAmerica in Knoxville, Tennessee for analysis
of benzene, toluene, ethylbenzene, and xylenes (BTEX), naphthalene, and 2-methylnaphthalene.
Analytical Results
The analytical data from the April 22, 2020, monitoring event are summarized in Table 1, and the
complete laboratory report is included in Attachment A. When reviewing the laboratory analytical report,
please note the sample identifications for your soil vapor monitoring points are SV-5R-042220 and
SV-14R-042220. Duplicate samples were collected from soil vapor monitoring point SV-5R as part of a
standard practice to measure field and laboratory precision, as well as to provide an indication of the
comparability of the results. The duplicate sample identification is SV-5RD-042220. Data from historical
monitoring events are shown in Table 2.
The analytical results show that the samples collected in April 2020 were significantly lower than North
Carolina Department of Environmental Quality (NCDEQ) and U.S. Environmental Protection Agency (EPA)

Mr. and Mrs. Derek Wilson
May 29, 2020
Page 2
regulatory screening criteria, as shown in Table 1. The purpose of these soil gas criteria is to "screen" site
data to help identify areas, contaminants, and conditions that may require further evaluation or attention.
The results of the April 2020 monitoring event are generally consistent with the results of the previous
monitoring events. As shown in Table 2, some variability is apparent when comparing the data from the
historical monitoring events. In general, soil vapor monitoring results are expected to vary due to several
factors, including seasonal temperature changes, changes in barometric pressure, changes in water table
elevations, changes in subsurface conditions due to precipitation prior to a monitoring event, changes in
subsurface conditions due to operation of the remediation system, and variations in the contaminant
source concentrations.
Soil Vapor Monitoring Plan
The next semiannual monitoring event is planned for October 2020. A Jacobs representative will contact
you separately to coordinate this monitoring event.
As discussed in the Meeting Summary and Rebound Monitoring Plan letter that Jacobs submitted to
NCDEQ on May 30, 2019, the biosparging and soil vapor extraction (SVE) systems were turned off at the
end of April 2019 for rebound monitoring.
Thank you for your assistance and we apologize for any inconvenience this sampling program may cause.
Please feel free to contact me at 704.543.3285 or Jerry Aycock with Plantation at 770.751.4165 if you
have any questions about the monitoring results. The NCDEQ is an additional resource to discuss aspects
of the site and our monitoring activities. Ms. Trudy Beverly is the NCDEQ case manager and can be
contacted at 704.663.1699 concerning this site (NCDEQ Incident #88110).
Again, thank you for your cooperation.
Sincerely,
Mike Skeean, P.E.
Senior Project Manager
Copies to: Jerry Aycock, Plantation (via email)
Trudy Beverly, North Carolina Department of Environmental Quality (via email and FTP)
Brian Pace, Laureldale LLC (via email)
File — Jacobs
Attachments:
Table 1 — Soil Vapor Analytical Results (April 2020)
Table 2 — Historical Soil Vapor Analytical Results (October 2007 through April 2020)
Figure 1 — Biosparging/SVE System As -Built
Attachment A — Analytical Laboratory Report

Tables

Table 1. Soil Vapor Analytical Results (April 2020)
Poplar Tent Road
Plantation Pipe Line Company
Concord, Cabarrus County, North Carolina
C
N iF
d
C iFN
c
c
Sample ID
Date Collected
d r
c 0
y r
0
C r
0
X O
d
>` O
R
O
r M
w 0
(MM/DD/YYYY)
CO
0
'5 �
I✓
Xo �
N C
w
z
Ng/m3
SV-5R-042220
04/22/2020
0.28 J
ND <4.5
ND <3.5
ND <3.5
ND <3.5
ND <2.14
ND <3.24
SV-5RD-042220�
04/22/2020
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
ND <2.14
ND <3.24
SV-14R-042220
04/22/2020
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
ND <2.14
ND <3.24
Soil Gas Screening Criteria
120
34,800
374
695
695
20.9
NS
Soil Gas Screening Criteria
120
34,800
374
695
695
21
NS
Notes:
Duplicate sample collected from SV-5R.
2 February 2018 North Carolina Department of Environmental Quality Division of Waste Management Residential Vapor Intrusion Screening Levels for Sub -Slab and
Exterior Soil Gas (SGSL) based on an attenuation factor of 0.03. https://files.nc.gov/ncdeq/Waste%20Management/DWM/SF/RiskBasedRemediation/Feb2018_Res_VISLs.pdf
3 EPA Vapor Intrusion Screening Levels (VISL) Calculator (AF = 0.03), TRL = 10-5 or THQ = 0.2, accessed June 19, 2019. https://epa-visl.ornl.gov/cgi-bin/visl_search
4 The method detection limit is presented for samples analyzed by TO-17 in April 2020.
Bold text with gray highlighting indicates exceedance of one or more screening criteria
< = Indicates value is less than the shown reporting limit
pg/m3 = micrograms per cubic meter
AF = attenuation factor
EPA = U.S. Environmental Protection Agency
J = estimated value
ND = not detected
NS = no soil gas screening criteria available
THQ = Target Hazard Quotient
TRL = Target Risk Level
Page 1 of 1

Table 2. Historical Soil Vapor Analytical Results (October 2007 through April 2020)
Poplar Tent Road Site
Plantation Pipe Line Company
Concord, Cabarrus Countv, North Carolina
Sample ID
Date Collected
(MM/DD/YYYY)
C
c 0
d F
m-
C
2 O
o r
-
d
N C
n 0
�, r
t
w
T i..
K O
a�
�-
y
5, O
X r
o-
= 0
a~
C
z
= O
a
,�
z
R_
" O
Q
N R
c
t (7 1�
d y O
a
N 0
_
00
,�, r
T
X
Pg/m3
SV-05-100307
10/3/2007
ND < 2.4
0.6
J
ND < 2.4
0.6 J
ND < 2.4
ND < 2.4
NA
0.49 J
NA
3.0 J
SV-5
11/27/2007
ND < 1.9
11
2.9
8.5
3.0
ND < 1.9
NA
ND < 1.9
NA
11.5
SV-5R-111612
11/16/2012
ND<2.36
7.86
J
ND<3.20
ND<6.40
ND<3.20
ND<3.87
4.8
ND<4.29
ND<2.1
ND<3.20
SV-5R-D-1116121
11/16/2012
ND < 2.45
6.67
J
ND < 3.33
18.3 J
4.33
J
ND < 4.03
7.3 J
6.33 J
ND < 2.2
22.6 J
SV-5R-0304132
03/04/2013
ND < 0.23
0.14
J, B
ND < 0.30
ND < 0.30
0.016
J
ND < 0.30
ND < 2.50
ND < 1.50
ND < 2.50
NA
SV-5RD-0304131'2
03/04/2013
ND < 0.22
0.25
J, B
0.021 J
0.054 J
0.024
J
ND < 0.29
ND < 2.50
ND < 1.40
ND < 2.50
NA
SV-5R-0304133
03/04/2013
ND < 1.66
1.20
J
ND < 2.26
0.663 J
ND < 2.26
ND < 2.73
ND < 2.40
ND < 6.03
ND < 2.40
ND < 6.80
SV-5RD-0304131'3
03/04/2013
ND < 1.76
0.556
J
ND < 2.39
ND < 4.77
ND < 2.39
ND < 2.89
ND < 2.40
ND < 6.39
1.0 J
ND < 7.20
SV-5R-080513
8/5/2013
0.071 J
0.30
0.029 J
0.11 J
0.085
J
0.085 J
ND < 2.5
ND < 0.77
ND < 2.5
NA
SV-5RD-080513'
8/5/2013
0.071 J
0.26
0.020 J
0.049 J
0.03
J
0.039 J
ND < 2.5
ND < 0.82
ND < 2.5
NA
SV-5R-022714
02/27/2014
0.091 J
0.28
0.048 J
0.19
0.087
J
0.056 J
ND < 2.5
0.18 X
ND < 2.5
NA
SV-5RD-022714'
02/27/2014
0.13
0.27
0.052 J
0.18
0.082
J
0.049 J
ND < 2.5
ND < 0.16 X
ND < 2.5
NA
SV-5R-092314
09/23/2014
0.039 J
0.11
J
ND < 0.15
0.035 J
0.015
J
NA
ND < 2.5
NA
ND < 2.5
NA
SV-5RD-092314'
09/23/2014
0.14 J
0.054
J
ND < 0.14
0.026 J
ND < 0.14
J
NA
ND < 2.5
NA
ND < 2.5
NA
SV-5R-042815
04/28/2015
ND<0.16
ND<0.81
ND < 0.81
ND<0.81
ND<0.81
NA
ND < 2.5 R
NA
ND < 2.5 R
NA
SV-5RD-042815'
04/28/2015
0.25
0.27
J
ND<0.78
ND<0.78
ND<0.78
NA
ND < 2.5 R
NA
ND < 2.5 R
NA
SV-5R-101315
10/13/2015
62 J
ND <360
150 J
440
160
J
NA
ND <2.5
NA
ND <2.5
NA
SV-5RD-101315'
10113/2015
ND <68
ND <340
150 J
430
180
J
NA
ND <2.5
NA
ND <2.5
NA
SV5R-121015
12/10/2015
91
ND <86
480
2,400
2,100
NA
NA
NA
NA
NA
SV5RD-121015'
12/10/2015
120
ND <87
600
2,900
2,600
NA
NA
NA
NA
NA
SV-5R-022916
02/29/2016
5.1 J
ND <3.5
57 J
340 J
510
J
NA
3.1
NA
3.0
NA
SV-5RD-022916'
02/29/2016
12 J
4.2
J
140 J
820 J
1,200
J
NA
2.0 J
NA
2.1 J
NA
SV-5R-041116
04/11/2016
21
ND <42
320
1,700
1,600
NA
2.2 J
NA
ND <2.5
NA
SV-5RD-041116'
04/11/2016
21
ND < 38
310
1,700
1,600
NA
2.3 J
NA
ND < 2.5
NA
SV-5R-062716
06/27/2016
1.2
1.2
17
110
260
D
NA
1.1 J
NA
ND < 2.5
NA
SV-5RD-062716'
06/27/2016
0.90
0.57
J
16
110
250
D
NA
1.5 J
NA
0.77 J
NA
SV-5R-090716
09/07/2016
0.17 J
1.3
ND <0.89
ND <0.89
ND <0.89
NA
ND <2.5
NA
0.64 J
NA
SV-5RD-090716'
09107/2016
ND <0.20
0.54
J
ND <1.0
ND <1.0
ND <1.0
NA
ND <2.5
NA
0.45 J
NA
SV-5R-101816
10/18/2016
ND <0.15
0.30
J
ND <0.76
ND <0.76
ND <0.76
NA
ND <2.5
NA
ND <2.5
NA
SV-5RD-101816'
10118/2016
ND <0.15
ND <0.74
ND <0.74
ND <0.74
ND <0.74
NA
ND <2.5
NA
ND <2.5
NA
SV-5R-041817
04/18/2017
ND <7.5
ND <37
13 J
97
130
NA
ND <2.5
NA
0.44 J
NA
SV-5RD-041817'
04118/2017
ND <7.3
ND <36
13 J
100
140
NA
ND <2.5
NA
ND < 2.5
NA
SV-5R-100917
10/09/2017
ND <0.73
1.4
J
1.8 J
14
27
NA
2.0 J
NA
0.63 J
NA
SV-5RD-100917
10/09/2017
ND <0.75
ND <3.8
1.9 J
14
27
NA
1.6 J
NA
ND < 2.5
NA
SV-5R-041718
04/17/2018
ND <7.3
ND <36
ND <36
ND <36
12
NA
ND <2.5
NA
5.0
NA
SV-5RD-041718'
04117/2018
NA
NA
NA
NA
NA
NA
ND <2.5
NA
4.9
NA
SV-5R-101718
10/17/2018
NA
NA
NA
NA
NA
NA
ND <2.5
NA
3.5
NA
SV-5RD-101718'
10117/2018
NA
NA
NA
NA
NA
NA
ND <2.5
NA
3.1
NA
SV-5R-101918
10/19/2018
ND <7.6
5.6 J
ND <39
ND <83
5.9 J
NA
NA
NA
NA
NA
SV-5RD-101918'
10119/2018
ND <8.0
ND <42
ND <42
ND <88
ND <42
NA
NA
NA
NA
NA
SV-5R-042419
04/24/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
280 J
NA
34 J
NA
SV-5RD-042419'
04/24/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
260 J
NA
32 J
NA
SV-5R-071019
07/10/2019
NA
NA
NA
NA
NA
NA
ND <1.7
NA
ND <2.6
NA
SV-5RD-071019'
07110/2019
NA
NA
NA
NA
NA
NA
ND <1.7
NA
ND <2.6
NA
SV-5R-101719
10/17/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <1.7
NA
ND <2.6
NA
SV-5RD-101719'
10/17/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <1.7
NA
ND <2.6
NA
SV-5R-042220
04/22/2020
0.28 J
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <2.1
NA
ND <3.2
NA
SV-5RD-042220'
04/22/2020
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <2.1
NA
ND <3.2
NA
SV-14-100307
10/3/2007
ND < 2.3
0.3
J
ND < 2.3
ND < 4.7
ND < 2.3
4.0
NA
1.3 J
NA
ND < 7
SV-14
11/28/2007
ND < 1.8
1.4
J
0.53 J
1.5 J
0.56
J
ND < 1.8
NA
ND < 1.8
NA
2.06 J
SV-14R-111612
11/16/2012
ND < 0.89
ND < 1.05
1.50 J
4.15 J
ND < 1.21
ND < 1.47
4.6
ND < 1.63
ND < 1.7
5.30 J
SV-14R-0304132
03/04/2013
ND < 0.21
0.27
J, B
0.016 J
0.059 J
0.046
J
0.12 J
ND < 2.50
ND < 1.40
ND < 2.50
NA
SV-14R-0304133
03/04/2013
0.679 J
0.521
J
ND < 1.99
ND < 3.98
ND < 1.99
ND < 2.4
ND < 2.40
ND < 5.32
2.4 J
ND < 5.96
SV-14R-080513
8/5/2013
0.054 J
0.40
0.054 J
0.23
0.18
J
0.13 J
ND < 2.5
0.98
ND < 2.5
NA
SV-14R-022714
2/27/2014
0.084 J
0.24
0.042 J
0.13 J
0.18
J
0.035 J
ND < 2.5
0.15 X
ND < 2.5
NA
SV-14R-092314
09/23/2014
0.024 J
0.073
J
ND < 0.14
0.034 J
0.013
J
NA
ND < 2.5
NA
ND < 2.5
NA
SV-14R-042815
04/28/2015
ND<0.13
ND<0.66
ND < 0.66
ND<0.66
ND<0.66
NA
ND < 2.5 R
NA
0.50 J
NA
SV-14R-101315
10/13/2015
ND <0.14
1.7
ND <0.70
ND <0.70
ND <0.70
NA
ND <2.5
NA
ND <2.5
NA
SV14R-121015
12/10/2015
ND <170
ND <170
ND <170
ND <330
ND <170
NA
NA
NA
NA
NA
SV-14R-022916
02/29/2016
ND <0.13
0.31
J
ND <0.65
ND <0.65
ND <0.65
NA
2.3 J
NA
2.6
NA
SV-14R-041116
04/11/2016
ND <0.15
0.70
J
ND <0.73
ND <0.73
ND <0.73
NA
ND <2.5
NA
ND <2.5
NA
SV-14R-062716
06/27/2016
0.15 J
0.31
J
ND <0.84
ND <0.84
ND <0.84
NA
ND <2.5
NA
I ND <2.5
NA
SV-14R-101816
10/18/2016
ND <0.16
ND <0.80
ND <0.80
2.8
1.0
NA
ND <2.5
NA
I ND <2.5
NA
Page 1 of 2

Table 2. Historical Soil Vapor Analytical Results (October 2007 through April 2020)
Poplar Tent Road Site
Plantation Pipe Line Company
Concord, Cabarrus County, North Carolina
C I
Co
c
N
m
d N
C
c
N
c
,-.
� c
� c
,-.
�
Date Collected
c 6
O
C
n 0
TO
5d, O
X
(7
17
w°' :R
Yd Y(p
N
Sample ID
d �-
o
t
o
C
: a
N
: a
Fr
N
m(MM/DDYYYY) rO
w
Z
,c
Z
R
c
X
Pg/m3
SV-14R-041817
04/18/2017
ND <0.14
ND <0.69
ND <0.69
ND <0.69
ND <0.69
NA
ND <2.5
NA
ND <2.5
NA
SV-14R-100917
10/09/2017
ND <0.15
0.33 J
ND <0.77
ND <0.77
ND <0.77
NA
2.0 J
NA
0.65 J
NA
SV-14R-041718
04/17/2018
ND <0.15
0.59 J
ND <0.76
ND <0.76
ND <0.76
NA
NA
NA
NA
NA
SV-14RD-0417184
04/17/2018
ND <0.15
ND <0.74
ND <0.74
ND <0.74
ND <0.74
NA
NA
NA
NA
NA
SV-14R-050318
05/03/2018
0.14 J
0.86
ND <0.85
1.8 J
1.0
NA
ND <2.5
NA
ND <2.5
NA
SV-14RD-0503184
05/03/2018
0.23
3.6
0.40 J
1.5 J
0.55 J
NA
ND <2.5
NA
ND <2.5
NA
SV-14R-101718
10/17/2018
0.19 J
0.16 J
ND <2.3
ND <5.0
ND <2.4
NA
ND <2.5
NA
2.3 J
NA
SV-14R-042419
04/24/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <9.4 J
NA
ND <4.2 J
NA
SV-14R-101719
10/17/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <1.7
NA
ND <2.6
NA
SV-14R-042220
04/22/2020
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
ND <2.1
NA
ND <3.2
NA
Soil Gas Screening Criteria5
120
34800
374
695
695
20.9
20.9
INS
INS
695
Soil Gas Screening Criteria
1 120
35000
370
700
700
1 21
1 21
INS
NS
700
Notes:
Duplicate sample collected from SV-5R
2 Sample analyzed at AILS Environmental
3 Sample analyzed at ASL/Eurofins Air Toxics
° Duplicate sample collected from SV-14R
s February 2018 North Carolina Department of Environmental Quality Division of Waste Management Residential Vapor Intrusion Screening Levels for Sub -Slab and
Exterior Soil Gas (SGSL) based on an attenuation factor of 0.03. https://files.nc.gov/ncdeq[Waste % 20Management/DWM/SF/RiskBasedRemediation/Feb2Q18_Res_VISLs.pdf
e EPA Vapor Intrusion Screening Levels (VISL) Calculator (AF = 0.03), TRL = 10-5 or THQ = 0.2, accessed June 19, 2019. https://epa-visl.ornl.gov/cgi-bin/visl_search
7The method detection limit is presented for samples analyzed by TO-17.
Bold text with gray highlighting indicates exceedance of one or more screening criteria
< = Indicates value is less than the shown reporting limit
pg/m3 = micrograms per cubic meter
AF = attenuation factor
B = analyte detected in both the sample and associated method blank
D = reported result is from a dilution
EPA = U.S. Environmental Protection Agency
J = estimated value
NA = not analyzed
ND = not detected
INS = no soil gas screening criteria available
R = data were rejected during validation
THQ = Target Hazard Quotient
TRL = Target Risk Level
X = excluded. Preferred analytical method for 2-Methylnaphthalene is TO-17. See case narrative in laboratory report.
Page 2 of 2

Figure

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r s
EQUIPMENT BUILDING
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I I I
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I
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I
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BIOSPARGING WELL
BIOSPARGING WELL
FORMER
DPE WELLS
298
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304'
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\)
216'
SCREEN
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298'
SCREEN
RW-12, RW-13 AND
514'
TOTAL
602'
60'
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DEPTH FROM
ENTRY POINT
14
60'
DEPTH FROM
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F
F F -F F F -F
LOT 6 1 .:>':; .. LOT
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SV-
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sv
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20' SIDE
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V PRE 6
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VAULT
BIOSPARGING
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18" DEPTH
p V
V-10R SV- ,SVE--,
1 0
14 SVE-3
DEEP VERTICAL
BIOSPARGING WELLS
71'-74' DEPTH
14W-704.
\\
t k 1 \
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MIDDLECREST DRF IOSPA GENGICAL WELLS
/4� 60'PUBLIC R/I VEYANCE TRENCHPIPING
LEGEND
SANITARY SEWER MANHOLE
FIRE HYDRANT
CURB INLET
CONCRETE CURB
LIGHT POLE
CONCRETE
®
WOOD WALKWAY
- — —
- PROPERTY LINE
RIGHT OF WAY
— —
— SANITARY SEWER
—"'—
WATERLINE
-------
STORM SEWER
EXISTING 26" U/G GASOLINE LINE
— °—°—°—
°— EXISTING 10" U/G FIBER OPTIC LINE
EXISTING 14" U/G DIESEL FUEL LINE
——"°F—
UNDERGROUND ELECTRIC
> +
OVERHEAD ELECTRIC
TREE LINE
(qMW-8
SHALLOW MONITORING WELL
Q�MW-BD
DEEP MONITORING WELL
®MW-BT
TRANSITION ZONE MONITORING WELL
OPZ-9
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SURFACE WATER SAMPLING LOCATION
°❑
RECOVERY WELL
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DPE ANGLED WELL
QO SV-5R
SOIL VAPOR MONITORING POINT
SVE-2 ❑
VERTICAL SVE WELL
19
SVE ACCESS VAULT
■
SOURCE AREA SVE WELL
VERTICAL BIOSPARGING WELL
CONVEYANCE PIPING ASSOCIATED WITH
THE BIOSPARGING SYSTEM
CONVEYANCE PIPING ASSOCIATED WITH
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++++++++++++++++++++++++
SCREEN ED I NTERVAL
-+++++++++++++++++++++#+
= = = =
INSTALLATION VIA HDD
o�
0 30 60
I I I
APPROXIMATE SCALE IN FEET
Figure 1. Biosparging/SVE System As -Built
Poplor Tent Road Site
120
Plantation Pipe Line Company ON
Concord, North Carolina
KinderMorgan\358526PoplarTent\Reports\Groundwater Monitoring Reports\2018 Annual Report\Figures\CADD

Attachment A
Laboratory Analytical Report

.;acobs
Memorandum
14120 Ballantyne Corporate Place, Suite 200
Charlotte, North Carolina 28277
United States
T +1.704.544.4040
F +1.704.544.4041
www.jacobs.com
Subject
Data Validation Summary — Plantation Pipe Line Poplar Tent Road Site Soil Vapor
Project Name
Plantation Pipe Line Poplar Tent Road Site
Attention
Kelly Gutowski/CLT, Jacobs
Mike Skeean/CLT, Jacobs
From
Tiffany Davis/GNV, Jacobs
Date May 18, 2020
Copies to Juan Acaron/GNV, Jacobs
1. Introduction
The purpose of this memorandum is to present the results of the data validation process for the soil vapor
samples collected at the Plantation Pipe Line Company (PPL) Poplar Tent Road Site located in Concord,
North Carolina. The samples were collected in April 2020.
Samples were submitted to Eurofins TestAmerica, Knoxville in Tennessee for the following analyses:
• TO15 SIM Volatiles
• TO17 VolatiLes
These data were validated for compliance with the analytical method requirements. This process included
a review of these data to assess the accuracy, precision, and completeness based upon procedures
described in guidance documents such as the Environmental Protection Agency (EPA) National Functional
Guidelines for Organic Data Review (EPA 2017) and the USEPA, Compendium of Methods for the
Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA 1999). The Quality
assurance/quality control (QA/QC) summary forms and data reports were reviewed and the resulting
findings are documented within each subsection that follows.
During the data validation, if QA/QC parameters were not within the acceptance limits, associated sample
results were appended with a primary qualifying flag that indicated a possible anomaly with these data.
The qualifying flags originated during the data review and validation processes. This qualification also
included the use of secondary sub -qualifier flags. The secondary qualifiers provide the reasoning behind
the assignment of a qualifier to these data. The definitions of the primary qualifiers are presented below.

Data Validation Summary — Plantation Pipe Line Poplar Tent Road Site Soil Vapor
2. Validation Flag Definitions
The following primary qualifiers were used to qualify the data:
[=]: Detected. The analyte was analyzed for and detected at the concentration shown.
[J]: Estimated. The analyte was present but the reported value may not be accurate or precise.
[U]: Undetected. The analyte was analyzed for but not detected above the method detection limit.
[UJ]: Detection limit estimated. The analyte was analyzed for but qualified as not detected; the detection
Limit is estimated.
[R]: Rejected. The data are not useable.
[X]: Excluded. Data were not used due to another value being more appropriate.
3. Organic Parameters
3.1 Quality Control Review
The following list represents the QA/QC measures that were reviewed during the data quality evaluation
procedure for organic data:
• Holding Times. The holding times are evaluated to verify that samples were extracted and analyzed
within holding times.
• Blank samples. Method blank samples were provided for this project. Blank samples enable the
reviewer to determine if an analyte may be attributed to sampling or laboratory procedures, rather
than environmental contamination from site activities.
• Surrogate Recoveries. A surrogate compound is added to each sample and the recovery is used to
monitor lab performance and possible matrix interference.
• Lab Control Sample (LCS). These samples are a "controlled matrix", such as humidified nitrogen, in
which target compounds have been added prior to extraction/analysis. The recoveries serve as a
monitor of the overall performance of each step during the analysis, including sample preparation.
• Matrix Spike/Matrix Spike Duplicate (MS/MSD) Samples. Spike recovery is used to evaluate potential
matrix interferences, as well as accuracy. Precision information is also determined by calculating the
reproducibility between the recoveries of each spiked parameter.
• Field Duplicate Samples. These samples are collected to determine precision between a native and its
duplicate. This information can only be determined when target compounds are detected.
4. Volatile Organic Compound Analyses
The GA/QC parameters for VOC analyses by EPA Methods TO-15 and TO-17 for all samples were within
acceptable control limits with the exceptions listed below. A brief overview of the data evaluation follows:
4.1 Holding Times (and Sample Receipt)
All holding time requirements were met.

Data Validation Summary — Plantation Pipe Line Poplar Tent Road Site Soil Vapor
4.2 Analytical Blanks
No target analytes were detected in the blanks.
4.3 Recoveries — Surrogates, MS/MSD, LCS/LCSD
Surrogates and LCS/LCSD recoveries all met acceptance criteria. A MS/MSD set was not collected for this
event.
4.4 Field Duplicates
Duplicate field samples were collected and submitted to the laboratory for analysis. There are two
conditions under which the native and field duplicate are deemed outside acceptance criteria. For
condition one, if a result for the native and field duplicate are less than five times the reporting limit, the
two results must be within one times the reporting limit to meet acceptance criteria. In condition two, if the
result is greater than five times the reporting limit, the two results must agree to within 20 percent relative
percent difference to meet acceptance criteria. All acceptance criteria were met.
5. PARCC
Precision is defined as the agreement between duplicate results, and was estimated by comparing
duplicate LCS recoveries, and field duplicate sample results. The precision between the native and field
duplicate sample results for all analyses were within acceptable criteria indicating that the sample matrix
did not interfere with the overall analytical process.
Accuracy is a measure of the agreement between an experimental determination and the true value of the
parameter. In the case of organic analysis, each of the samples were spiked with a surrogate compound
with a known concentration before preparation. The surrogate data provides a measure of the matrix
effects as they may affect accuracy and precision of the analytical method. The LCS results demonstrate
accuracy of the method. Spike recoveries were within the method acceptance limits, showing no evidence
of matrix interferences that affect the usability of the data.
Representativeness criteria are a qualitative measure of the degree to which sample data accurately and
precisely represent a characteristic environmental condition. Representativeness is a subjective parameter
and is used to evaluate the efficacy of the sampling plan design. Representativeness was demonstrated by
providing full descriptions in the project scoping documents of the sampling techniques and the rationale
used for selecting sampling locations.
Comparability is another qualitative measure designed to express the confidence with which one data set
may be compared to another. Factors that affect comparability are sample collection and handling
techniques, sample matrix type, and analytical method. Comparability is limited by the other PARCC
parameters because data sets can be compared with confidence only when precision and accuracy are
known. Data from this investigation are comparable with other previous data collected at the site due to
the laboratories use of EPA or appropriate methods to analyze the samples and supported by the results
of the laboratory's analytical reports.
Completeness is defined as the percentage of measurements that are judged to be valid compared to the
total number of measurements made. There were no data rejected and or seen as not usable due to
quality control or sampling issues.

Data Validation Summary — Plantation Pipe Line Poplar Tent Road Site Soil Vapor
6. Conclusion
A review of the laboratory's analytical data submitted regarding the investigation of PPL Poplar Tent Road
soil vapor sampling event in April 2020 by Jacobs has been completed. The validation demonstrated that
the analytical systems were in control at the time of sample analyses and all data results can be used in
the decision -making process as qualified by the data validation process.

urofins
Environment Testing
America
ANALYTICAL REPORT
Eurofins TestAmerica, Knoxville
5815 Middlebrook Pike
Knoxville, TN 37921
Tel: [phone]
Laboratory Job ID: 140-18934-1
Client Project/Site: Poplar Tent Road
CH2M Hill, Inc.
14120 Ballantyne Corporate Place
Suite 200
Charlotte, North Carolina 28277
Attn: Mike Skeean
Authorized for release by.
51812020 10:55:22 AM
Jamie McKinney, Senior Project Manager
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC and 2009 TNI requirements for accredited
parameters, exceptions are noted in this report. This report may not be reproduced except in full,
and with written approval from the laboratory. For questions please contact the Project Manager
at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Table of Contents
Laboratory Job ID: 140-18934-1
CoverPage ..............................................
1
Table of Contents .........................................
2
Definitions/Glossary.......................................
3
Case Narrative ...........................................
4
Detection Summary ........................................
5
Client Sample Results ......................................
6
Default Detection Limits ....................................
9
Surrogate Summary .......................................
10
QC Sample Results ........................................
11
QC Association Summary ...................................
12
Lab Chronicle ............................................
13
Certification Summary ......................................
15
Method Summary .........................................
16
Sample Summary .........................................
17
Chain of Custody ..........................................
18
Receipt Checklists .........................................
20
Eurofins TestAmerica, Knoxville
Page 2 of 20 5/8/2020

Definitions/Glossary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Qualifiers
Air - GUMS VOA
Qualifier Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Glossary
Abbreviation 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
%R Percent Recovery
CFL Contains Free Liquid
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)
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
PQL Practical Quantitation Limit
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)
Job ID: 140-18934-1
Eurofins TestAmerica, Knoxville
Page 3 of 20 5/8/2020

Case Narrative
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-18934-1
Laboratory: Eurofins TestAmerica, Knoxville
Narrative
Job ID: 140-18934-1
0
Job Narrative
140-18934-1
Comments
No additional comments.
Receipt
The samples were received on 4/24/2020 8:30 AM; the samples arrived in good condition, properly preserved and, where required, on ice
Air - GC/MS VOA
Methods TO 14A, TO 15 LL, TO-14A, TO-15: EPA methods TO-14A and TO-15 specify the use of humidified "zero air" as the blank reagent
for canister cleaning, instrument calibration and sample analysis. Ultra -high purity humidified nitrogen from a cryogenic reservoir is used
in place of "zero air" by Eurofins TestAmerica Knoxville.
Methods TO 14A, TO 15 LL, TO-14A, TO-14A Low, TO-15: The Initial Calibration for Methylene Chloride did not meet the %RSD criterion
specified in the standard operating procedure for average response factor. An linear calibration model was selected which met the
acceptance criterion for coefficient of determination (r2) at 0.998 and the read back criteria for the individual calibration points. (ICIS
140-39179/9)
Methods TO 15 LL, TO-15: Although the BFB is flagged as outside control limits for TO-14 on batch 140-39269, the results are within limits
for TO-15, which is required for this project.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Eurofins TestAmerica, Knoxville
Page 4 of 20 5/8/2020

Detection Summary
Client: CH21VI Hill, Inc.
Job ID: 140-18934-1
Project/Site: Poplar Tent Road
Client Sample ID: SV-12R-042220
Lab Sample ID: 140-18934-1
ENo Detections.
Client Sample ID: SV-13R-042220
Lab Sample ID: 140-18934-2
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.15
J
0.80
0.080
ppb v/v
1 TO 15 LL Total/NA
m-Xylene & p-Xylene 0.31
J
0.80
0.29
ppb v/v
1 TO 15 LL Total/NA
o-Xylene 0.18
J
0.80
0.15
ppb v/v
1 TO 15 LL Total/NA
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.49
J
2.6
0.26
ug/m3
1 TO 15 LL Total/NA
m-Xylene & p-Xylene 1.4
J
3.5
1.3
ug/m3
1 TO 15 LL Total/NA
o-Xylene 0.77
J
3.5
0.65
ug/m3
1 TO 15 LL Total/NA
Client Sample ID: SV-10R2-042220
Lab Sample ID: 140-18934-3
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.080
J
0.80
0.080
ppb v/v
1 TO 15 LL Total/NA
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.26
J
2.6
0.26
ug/m3
1 TO 15 LL Total/NA
Client Sample ID: SV-14R-042220
Lab Sample ID: 140-18934-4
ENo Detections.
Client Sample ID: SV-5R-042220
Lab Sample ID: 140-18934-5
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.088
J
0.80
0.080
ppb v/v
1 TO 15 LL Total/NA
Analyte Result
Qualifier
RL
MDL
Unit
Dil Fac D Method Prep Type
Benzene 0.28
J
2.6
0.26
ug/m3
1 TO 15 LL Total/NA
Client Sample ID: SV-5RD-042220
Lab Sample ID: 140-18934-6
ENo Detections
This Detection Summary does not include radiochemical test results.
Eurofins TestAmerica, Knoxville
Page 5 of 20 5/8/2020

Client Sample Results
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-18934-1
Client Sample ID: SV-12R-042220 Lab Sample ID: 140-18934-1
Date Collected: 04/22/20 09:15 Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte
Result Qualifier
RL
MDL
Unit D Prepared
Benzene
ND
0.80
0.080
ppb v/v
Ethylbenzene
ND
0.80
0.13
ppb v/v
Toluene
ND
1.2
0.78
ppb v/v
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
o-Xylene
ND
0.80
0.15
ppb v/v
Analyzed Dil Fac
04/27/20 14:42
1
U
04/27/20 14:42
1
04/27/20 14:42
1
04/27/20 14:42
1
04/27/20 14:42
1
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed
Dil Fac
Benzene
ND
2.6
0.26
ug/m3
04/27/20 14:42
1
Ethylbenzene
ND
3.5
0.56
ug/m3
04/27/20 14:42
1
Toluene
ND
4.5
2.9
ug/m3
04/27/20 14:42
1
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
04/27/20 14:42
1
o-Xylene
ND
3.5
0.65
ug/m3
04/27/20 14:42
1
Surrogate
%Recovery Qualifier
Limits
Prepared Analyzed
Dil Fac
4-Bromofluorobenzene (Surr)
98
60 - 140
04127120 14:42
1
Client Sample ID: SV-13R-042220
Lab Sample ID: 140-18934-2
Date Collected: 04/22/20 12:20
Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Method: TO 15 LL - Volatile Organic Compounds
in Ambient Air, Low Concentration (GC/MS)
Analyte Result
Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene 0.15
J
0.80
0.080
ppb v/v
04/27/20 15:24 1
Ethylbenzene ND
0.80
0.13
ppb v/v
04/27/20 15:24 1
Toluene ND
1.2
0.78
ppb v/v
04/27/20 15:24 1
m-Xylene & p-Xylene 0.31
J
0.80
0.29
ppb v/v
04/27/20 15:24 1
o-Xylene 0.18
J
0.80
0.15
ppb v/v
04/27/20 15:24 1
Analyte Result
Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene 0.49
J
2.6
0.26
ug/m3
04/27/20 15:24 1
Ethylbenzene ND
3.5
0.56
ug/m3
04/27/20 15:24 1
Toluene ND
4.5
2.9
ug/m3
04/27/20 15:24 1
m-Xylene & p-Xylene 1.4
J
3.5
1.3
ug/m3
04/27/20 15:24 1
o-Xylene 0.77
J
3.5
0.65
ug/m3
04/27/20 15:24 1
Surrogate %Recovery
Qualifier
Limits
Prepared Analyzed Dil Fac
4-Bromofluorobenzene (Surr) 103
60 - 140
04127120 15:24 1
Client Sample ID: SV-10R2-042220
Lab Sample ID: 140-18934-3
Date Collected: 04/22/20 13:24
Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte Result Qualifier RL MDL Unit D Prepared
Analyzed
Dil Fac
Benzene
0.080 J
0.80
0.080
ppb v/v
04/27/20 16:54
1
Ethylbenzene
ND
0.80
0.13
ppb v/v
04/27/20 16:54
1
Toluene
ND
1.2
0.78
ppb v/v
04/27/20 16:54
1
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
04/27/20 16:54
1
o-Xylene
ND
0.80
0.15
ppb v/v
04/27/20 16:54
1
Eurofins TestAmerica, Knoxville
Page 6 of 20 5/8/2020

Client Sample Results
Client: CH2M Hill, Inc.
Job ID: 140-18934-1
Project/Site: Poplar Tent Road
Client Sample ID: SV-10R2-042220
Lab Sample ID: 140-18934-3
Date Collected: 04/22/20 13:24
Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Analyte Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene 0.26 J
2.6
0.26
ug/m3
04/27/2016:54 1
Ethylbenzene ND
3.5
0.56
ug/m3
04/27/2016:54 1
Toluene ND
4.5
2.9
ug/m3
04/27/2016:54 1
m-Xylene & p-Xylene ND
3.5
1.3
ug/m3
04/27/20 16:54 1
o-Xylene ND
3.5
0.65
ug/m3
04/27/2016:54 1
Surrogate %Recovery Qualifier
Limits
Prepared Analyzed Dil Fac
4-Bromofluorobenzene (Surr) 98
60 - 140
04127120 16:54 1
Client Sample ID: SV-14R-042220
Lab Sample ID: 140-18934-4
Date Collected: 04/22/20 14:01
Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte Result Qualifier RL MDL Unit D Prepared
Analyzed
Dil Fac
Benzene
ND
0.80
0.080
ppb v/v
04/27/20 17:37
1
Ethylbenzene
ND
0.80
0.13
ppb v/v
04/27/20 17:37
1
Toluene
ND
1.2
0.78
ppb v/v
04/27/20 17:37
1
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
04/27/20 17:37
1
o-Xylene
ND
0.80
0.15
ppb v/v
04/27/20 17:37
1
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene
ND
2.6
0.26
ug/m3
04/27/20 17:37 1
Ethylbenzene
ND
3.5
0.56
ug/m3
04/27/20 17:37 1
Toluene
ND
4.5
2.9
ug/m3
04/27/20 17:37 1
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
04/27/20 17:37 1
o-Xylene
ND
3.5
0.65
ug/m3
04/27/20 17:37 1
Surrogate
%Recovery Qualifier
Limits
Prepared Analyzed Dil Fac
4-Bromofluorobenzene (Surr)
103
60 - 140
04127120 17:37 1
Client Sample ID: SV-5R-042220
Lab Sample ID: 140-18934-5
Date Collected: 04/22/20 14:54
Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte
Result
Qualifier
RL
MDL
Unit D Prepared
Analyzed
Dil Fac
Benzene
0.088
J
0.80
0.080
ppb v/v
04/27/20 18:20
1
Ethylbenzene
ND
0.80
0.13
ppb v/v
04/27/20 18:20
1
Toluene
ND
1.2
0.78
ppb v/v
04/27/20 18:20
1
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
04/27/20 18:20
1
o-Xylene
ND
0.80
0.15
ppb v/v
04/27/20 18:20
1
Analyte
Result
Qualifier
RL
MDL
Unit D Prepared
Analyzed
Dil Fac
Benzene
0.28
J
2.6
0.26
ug/m3
04/27/20 18:20
1
Ethylbenzene
ND
3.5
0.56
ug/m3
04/27/20 18:20
1
Toluene
ND
4.5
2.9
ug/m3
04/27/20 18:20
1
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
04/27/20 18:20
1
o-Xylene
ND
3.5
0.65
ug/m3
04/27/20 18:20
1
Eurofins TestAmerica, Knoxville
Page 7 of 20 5/8/2020

Client Sample Results
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-18934-1
Client Sample ID: SV-5R-042220 Lab Sample ID: 140-18934-5
Date Collected: 04/22/20 14:54 Matrix: Air
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Surrogate %Recovery Qualifier Limits
4-Bromofluorobenzene (Surr) 99 60 - 140
Client Sample ID: SV-5RD-042220
Date Collected: 04/22/20 14:54
Date Received: 04/24/20 08:30
Sample Container: Summa Canister 1 L
Prepared Analyzed Dil Fac
04127120 18:20 1 F1
Lab Sample ID: 140-18934-6
Matrix: Air
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte
Result Qualifier
RL
MDL
Unit D Prepared
Benzene
ND
0.80
0.080
ppb v/v
Ethylbenzene
ND
0.80
0.13
ppb v/v
Toluene
ND
1.2
0.78
ppb v/v
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
o-Xylene
ND
0.80
0.15
ppb v/v
Analyte
Result Qualifier
RL
MDL
Unit D Prepared
Benzene
ND
2.6
0.26
ug/m3
Ethylbenzene
ND
3.5
0.56
ug/m3
Toluene
ND
4.5
2.9
ug/m3
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
o-Xylene
ND
3.5
0.65
ug/m3
Surrogate %Recovery Qualifier Limits
4-Bromofluorobenzene (Surr) 103 60 - 140
Analyzed Dil Fac
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
Analyzed
Dil Fac
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
04/27/20 19:02
1
Prepared Analyzed Dil Fac
04127120 19:02 1
Eurofins TestAmerica, Knoxville
Page 8 of 20 5/8/2020

Default Detection Limits
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-18934-1
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Analyte
RL
MDL
Units
Benzene
0.080
0.0080
ppb v/v
Benzene
0.26
0.026
ug/m3
Ethylbenzene
0.080
0.013
ppb v/v
Ethylbenzene
0.35
0.056
ug/m3
m-Xylene & p-Xylene
0.080
0.029
ppb v/v
m-Xylene & p-Xylene
0.35
0.13
ug/m3
o-Xylene
0.080
0.015
ppb v/v
o-Xylene
0.35
0.065
ug/m3
Toluene
0.12
0.078
ppb v/v
Toluene
0.45
0.29
ug/m3
Eurofins TestAmerica, Knoxville
Page 9 of 20 5/8/2020

Surrogate Summary
Client: CH2M Hill, Inc.
Job ID: 140-18934-1
Project/Site: Poplar Tent Road
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Matrix: Air
Prep Type: Total/NA
Percent Surrogate Recovery (Acceptance Limits)
BFB
Lab Sample ID Client Sample ID
(60-140)
140-18934-1 SV-12R-042220
98
140-18934-2 SV-13R-042220
103
140-18934-3 SV-10R2-042220
98
140-18934-4 SV-14R-042220
103
140-18934-5 SV-5R-042220
99
140-18934-6 SV-5RD-042220
103
LCS 140-39269/1009 Lab Control Sample
103
MB 140-39269/11 Method Blank
98
Surrogate Legend
BFB = 4-Bromofluorobenzene (Surr)
Eurofins TestAmerica, Knoxville
Page 10 of 20 5/8/2020

QC Sample Results
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-18934-1
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Lab Sample ID: MB 140-39269/11
Client Sample ID: Method Blank
Matrix: Air
Prep Type: Total/NA
Analysis Batch: 39269
MB MB
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene
ND
0.080
0.0080
ppb v/v
04/27/20 13:57 1
Ethylbenzene
ND
0.080
0.013
ppb v/v
04/27/20 13:57 1
Toluene
ND
0.12
0.078
ppb v/v
04/27/20 13:57 1
m-Xylene & p-Xylene
ND
0.080
0.029
ppb v/v
04/27/20 13:57 1
o-Xylene
ND
0.080
0.015
ppb v/v
04/27/20 13:57 1
MB
MB
Analyte
Result
Qualifier
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
Benzene
ND
0.26
0.026
ug/m3
04/27/20 13:57
1
Ethylbenzene
ND
0.35
0.056
ug/m3
04/27/20 13:57
1
Toluene
ND
0.45
0.29
ug/m3
04/27/20 13:57
1
m-Xylene & p-Xylene
ND
0.35
0.13
ug/m3
04/27/20 13:57
1
o-Xylene
ND
0.35
0.065
ug/m3
04/27/20 13:57
1
MB
MB
Surrogate
%Recovery
Qualifier
Limits
Prepared
Analyzed
Dil Fac
4-Bromofluorobenzene (Surr)
98
60 -
140
04/27/20 13
1
Lab Sample ID: LCS 140-39269/1009
Client
Sample ID:
Lab Control Sample
Matrix: Air
Prep Type: Total/NA
Analysis Batch: 39269
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier
Unit
D %Rec
Limits
Benzene
1.00
1.07
ppb v/v
107
70 -130
Ethylbenzene
1.00
1.06
ppb v/v
106
70 -130
Toluene
1.00
1.08
ppb v/v
108
70 -130
m-Xylene & p-Xylene
2.00
2.16
ppb v/v
108
70 -130
o-Xylene
1.00
1.09
ppb v/v
109
70 -130
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier
Unit
D %Rec
Limits
Benzene
3.2
3.41
ug/m3
107
70 -130
Ethylbenzene
4.3
4.59
ug/m3
106
70 -130
Toluene
3.8
4.07
ug/m3
108
70 -130
m-Xylene & p-Xylene
8.7
9.37
ug/m3
108
70 -130
o-Xylene
4.3
4.73
ug/m3
109
70 -130
LCS LCS
Surrogate
%Recovery Qualifier
Limits
4-Bromofluorobenzene (Surr)
103
60 - 140
Eurofins TestAmerica, Knoxville
Page 11 of 20 5/8/2020

QC Association Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-18934-1
Air - GUMS VOA
Analysis Batch: 39269
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method Prep Batch
140-18934-1
SV-12R-042220
Total/NA
Air
TO 15 LL
140-18934-2
SV-13R-042220
Total/NA
Air
TO 15 LL
140-18934-3
SV-10R2-042220
Total/NA
Air
TO 15 LL
140-18934-4
SV-14R-042220
Total/NA
Air
TO 15 LL
140-18934-5
SV-5R-042220
Total/NA
Air
TO 15 LL
140-18934-6
SV-5RD-042220
Total/NA
Air
TO 15 LL
MB 140-39269/11
Method Blank
Total/NA
Air
TO 15 LL
LCS 140-39269/1009
Lab Control Sample
Total/NA
Air
TO 15 LL
Eurofins TestAmerica, Knoxville
Page 12 of 20 5/8/2020

Lab Chronicle
Client: CH21VI Hill, Inc.
Job ID: 140-18934-1
Project/Site: Poplar Tent Road
Client Sample ID: SV-12R-042220
Lab Sample ID: 140-18934-1
Date Collected: 04/22/20 09:15
Matrix: Air
Date Received: 04/24/20 08:30
F Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 mL 39269 04/27/20 14:42 S1K TAL KNX
Instrument ID: MG
Client Sample ID: SV-13R-042220
Lab Sample ID: 140-18934-2
Date Collected: 04/22/20 12:20
Matrix: Air
Date Received: 04/24/20 08:30
Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 mL 39269 04/27/20 15:24 S1K TAL KNX
Instrument ID: MG
Client Sample ID: SV-10R2-042220
Lab Sample ID: 140-18934-31
Date Collected: 04/22/20 13:24
Matrix: Air W
Date Received: 04/24/20 08:30
Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 mL 39269 04/27/20 1654 S1K TAL KNX
Instrument ID: MG
Client Sample ID: SV-14R-042220
Lab Sample ID: 140-18934-4
Date Collected: 04/22/20 14:01
Matrix: Air
Date Received: 04/24/20 08:30
Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 ­mL 39269 04/27/20 17:37 S1K TAL KNX
Instrument ID: MG
Client Sample ID: SV-5R-042220
Lab Sample ID: 140-18934-5
Date Collected: 04/22/20 14:54
Matrix: Air
Date Received: 04/24/20 08:30
F Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 mL 39269 04/27/20 18:20 S1K TAL KNX
Instrument ID: MG
Client Sample ID: SV-5RD-042220
Lab Sample ID: 140-18934-6
Date Collected: 04/22/20 14:54
Matrix: Air
Date Received: 04/24/20 08:30
Batch Batch
Dil Initial
Final Batch Prepared
Prep Type Type Method
Run Factor Amount
Amount Number or Analyzed Analyst Lab
Total/NA Analysis TO 15 LL
1 50 mL
500 ­mL 39269 04/27/20 19:02 S1K TAL KNX
Instrument ID: MG
Eurofins TestAmerica, Knoxville
Page 13 of 20 5/8/2020

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-18934-1
Client Sample ID: Method Blank Lab Sample ID: MB 140-39269/11
Date Collected: N/A Matrix: Air
Date Received: N/A
Batch Batch
Dil
Initial
Final Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount Number
or Analyzed
Analyst
Lab
Total/NA Analysis TO 15 LL
1
500 mL
500 mL 39269
04/27/20 13:57
S1K
TAL KNX
Instrument ID: MG
Client Sample ID: Lab Control Sample
Lab Sample ID: LCS
140-39269/1009
Date Collected: N/A
Matrix: Air
Date Received: N/A
Batch Batch
Dil
Initial
Final Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount Number
or Analyzed
Analyst
Lab
Total/NA Analysis TO 15 LL
1
500 mL
500 mL 39269
04/27/20 11:07
S1K
TAL KNX
Instrument ID: MG
Laboratory References:
TAL KNX = Eurofins TestAmerica, Knoxville, 5815 Middlebrook
Pike, Knoxville, TN 37921, TEL [phone]
Page 14 of 20
Eurofins TestAmerica, Knoxville
5/8/2020

Accreditation/Certification Summary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Laboratory: Eurofins TestAmerica, Knoxville
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority
Program
Identification Number
Expiration Date
AFCEE
N/A
ANAB
Dept. of Defense ELAP
L2311
02-13-22
ANAB
Dept. of Energy
L2311.01
02-13-22
ANAB
ISO/IEC 17025
L2311
02-13-22
ANAB
ISO/IEC 17025
L2311
02-14-22
Arkansas DEQ
State
88-0688
06-16-20
California
State
2423
06-30-20
Colorado
State
TN00009
02-28-21
Connecticut
State
PH-0223
09-30-21
Florida
NELAP
E87177
06-30-20
Georgia (DW)
State
906
12-11-22
Hawaii
State
NA
12-11-21
Kansas
NELAP
E-10349
11-01-20
Kentucky (DW)
State
90101
01-01-21
Louisiana
NELAP
83979
07-02-20
Louisiana (DW)
State
LA019
12-31-20
Maryland
State
277
03-31-21
Michigan
State
9933
12-11-22
Nevada
State
TN00009
07-31-20
New Hampshire
NELAP
299919
01-17-21
New Jersey
NELAP
TN001
06-30-20
New York
NELAP
10781
03-31-21
North Carolina (DW)
State
21705
07-31-20
North Carolina (WW/SW)
State
64
12-31-20
Ohio VAP
State
CL0059
08-28-20
Oklahoma
State
9415
09-01-20
Oregon
NELAP
TN I O189
01-02-21
Pennsylvania
NELAP
68-00576
12-31-20
Tennessee
State
02014
12-11-22
Texas
NELAP
T104704380-18-12
08-31-20
US Fish & Wildlife
US Federal Programs
058448
07-31-20
USDA
US Federal Programs
P330-19-00236
08-20-22
Utah
NELAP
TN00009
07-31-20
Virginia
NELAP
460176
09-15-20
Washington
State
C593
01-19-21
West Virginia (DW)
State
9955C
01-01-21
West Virginia DEP
State
345
04-30-20
Wisconsin
State
998044300
08-31-20
Job ID: 140-18934-1
Eurofins TestAmerica, Knoxville
Page 15 of 20 5/8/2020

Method Summary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Method Method Description Protocol
TO 15 LL Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) EPA
Protocol References:
EPA = US Environmental Protection Agency
Laboratory References:
TAL KNX = Eurofins TestAmerica, Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL [phone]
F
Job ID: 140-18934-1
Laboratory
TAL KNX
L
Eurofins TestAmerica, Knoxville
Page 16 of 20 5/8/2020

Sample Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-18934-1
Lab Sample ID
Client Sample ID
Matrix
Collected
Received
Asset ID
140-18934-1
SV-12R-042220
Air
04/22/2 009:15
04/24/2 008.30
Air Canister (1-Liter) #34001135
140-18934-2
SV-13R-042220
Air
04/22/20 12:20
04/24/20 08:30
Air Canister (1-Liter) #34000942
140-18934-3
SV-10R2-042220
Air
04/22/20 13:24
04/24/20 08:30
Air Canister (1-Liter) #11035
140-18934-4
SV-14R-042220
Air
04/22/20 14:01
04/24/20 08:30
Air Canister (1-Liter) #11766
140-18934-5
SV-5R-042220
Air
04/22/20 14:54
04/24/20 08:30
Air Canister (1-Liter) #11492
140-18934-6
SV-5RD-042220
Air
04/22/20 14:54
04/24/20 08:30
Air Canister (1-Liter) #11826
7
M
Eurofins TestAmerica, Knoxville
Page 17 of 20 5/8/2020

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Page 18 of 20 5/8/2020

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Page 19 of 20
5/8/2020

Gauge ID:
Date:
G5
4/24/2020
TestAmerica Knoxville - Air Canister Initial Pressure Check
Analyst
Sample ID
Asset #
Cleaning
Job
Cert
Size
(L)
Pressure @
Receipt
(-in Hg or +psig)
Time
Comments
BRS
140-18934-a-1
34001135
18639
B
1
-4.7
11:39
BRS
140-18934-a-2
34000942
18639
B
1
1 -3.5
11:40
BRS
140-18934-a-3
11035
18639
B
1
-1.2
11:41
BRS
140-18934-a-4
11766
18639
B
1
-4.5
11:42
BRS
140-18934-a-5
11492
18639
B
1
-5.4
11:43
BRS
140-18934-a-6
11826
18639
B
1
-5.4
11:44
❑ Receiving —Air Can —Calve Open (NCM # )
❑ Air - Can P -24 to -25 " - Flow Contr. Works (NCM# )
❑ Air - Can P -24 to -25 " - Flow Contr. Faulty (NCM# )
❑ Air - Can P Out -26" - Flow Contr. Works (NCM# )
❑ Air - Can P Out -26" - Flow Comr. Faulty (NCM# )
❑ Air - Can P Low -24 to -25 " - Grab Sample (NCM# )
❑ Air - Can P Low -26 "- Grab Sample (NCM# )
16
I EARBMAIMAII�
Page 20 of 20
MS038 r14, 6/19/15
5/8/2020

urofins Environment Testing
America
ANALYTICAL REPORT
Eurofins TestAmerica, Knoxville
5815 Middlebrook Pike
Knoxville, TN 37921
Tel: [phone]
Laboratory Job ID: 140-19046-1
Laboratory Sample Delivery Group: WO 1910445
Client Project/Site: Poplar Tent Road
Foi
CH2M Hill, Inc.
14120 Ballantyne Corporate Place
Suite 200
Charlotte, North Carolina 28277
Attn: Mike Skeean
C
Authorized for release by:
51812020 3:59:56 PM
Jamie McKinney, Senior Project Manager
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC and 2009 TNI requirements for accredited
parameters, exceptions are noted in this report. This report may not be reproduced except in full,
and with written approval from the laboratory. For questions please contact the Project Manager
at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Table of Contents
Laboratory Job ID: 140-19046-1 F
SDG: WO 1910445
U
CoverPage ..............................................
1
Table of Contents .........................................
2
Definitions/Glossary.......................................
3
Case Narrative ...........................................
4
Detection Summary ........................................
5
Client Sample Results ......................................
6
Surrogate Summary .......................................
8
QC Sample Results ........................................
9
QC Association Summary ...................................
10
Lab Chronicle ............................................
11
Method Summary .........................................
13
Sample Summary .........................................
14
Chain of Custody ..........................................
15
Eurofins TestAmerica, Knoxville
Page 2 of 15 5/8/2020

Definitions/Glossary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Qualifiers
Subcontract
Qualifier Qualifier Description
U COMPOUND ANALYZED FOR BUT NOT DETECTED ABOVE THE DETECTION LIMIT
Glossary
Abbreviation 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
%R Percent Recovery
CFL Contains Free Liquid
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)
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
PQL Practical Quantitation Limit
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)
Job ID: 140-19046-1
SDG: WO 1910445
Eurofins TestAmerica, Knoxville
Page 3 of 15 5/8/2020

Case Narrative
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-19046-1
Laboratory: Eurofins TestAmerica, Knoxville
Narrative
Job Narrative
140-19046-1
Job ID: 140-19046-1
SDG: WO 1910445
Receipt
The samples were received on 5/8/2020 3:16 PM; the samples arrived in good condition, properly preserved, and where required, on ice.
The temperature of the cooler at receipt time was
SUBCONTRACTING
The following analysis was subcontracted to Eurofins Air Toxics, Inc.:
T017 - naphthalene and 2-methyl naphthalene
Department Subcontract Lab non -Sister Lab
No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Eurofins TestAmerica, Knoxville
Page 4 of 15 5/8/2020

Detection Summary
Client: CH2M Hill, Inc. Job ID: 140-19046-1
Project/Site: Poplar Tent Road SDG: WO 1910445
Client Sample ID: SV-12R-042220 Lab Sample ID: 140-19046-1
ENo Detections.
Client Sample ID: SV-13R-042220 Lab Sample ID: 140-19046-2
ENo Detections.
Client Sample ID: SV-10R2-042220 Lab Sample ID: 140-19046-3
ENo Detections.
Client Sample ID: SV-14R-042220 Lab Sample ID: 140-19046-4
ENo Detections.
Client Sample ID: SV-5R-042220 Lab Sample ID: 140-19046-5 C
ENo Detections.
Client Sample ID: SV-5RD-042220 Lab Sample ID: 140-19046-6
INo Detections
This Detection Summary does not include radiochemical test results.
Eurofins TestAmerica, Knoxville
Page 5 of 15 5/8/2020

Client Sample Results
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Client Sample ID: SV-12R-042220
Date Collected: 04/22/20 09:38
Date Received: 05/08/20 15:16
Job ID: 140-19046-1
SDG: WO 1910445
Lab Sample ID: 140-19046-1
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
2-METHYLNAPHTHALENE ND U 25 3.2 UG/M3 04/27/2014:01 04/27/2014:01 1 !—
NAPHTHALENE ND U 25 2.1 UG/M3 04/27/2014:01 04/27/2014:01 1
Surrogate %Recovery Qualifier Limits Prepared Analyzed DY Fac
NAPHTHALENE-D8 75 50 - 150 04127120 14:01 04127120 14:01 1
Client Sample ID: SV-13R-042220
Date Collected: 04/22/20 12:24
Date Received: 05/08/20 15:16
Lab Sample ID: 140-19046-2
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte
Result
Qualifier
RL
MDL Unit D Prepared
Analyzed
Dil Fac
2-METHYLNAPHTHALENE
ND
U
25
3.2 UG/M3 04/27/2015:27
04/27/2015:27
1
NAPHTHALENE
ND
U
25
2.1 UG/M3 04/27/2015:27
04/27/2015:27
1
Surrogate
%Recovery
Qualifier
Limits
Prepared
Analyzed
Dil Fac
NAPHTHALENE-D8
69
50 - 150
04127120 15:27
04127120 15:27
1
Client Sample ID: SV-10R2-042220
Date Collected: 04/22/20 11:47
Date Received: 05/08/20 15:16
Lab Sample ID: 140-19046-3
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
2-METHYLNAPHTHALENE ND U 25 3.2 UG/M3 04/27/2016:55 04/27/2016:55 1
NAPHTHALENE ND U 25 2.1 UG/M3 04/27/2016:55 04/27/2016:55 1
Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac
NAPHTHALENE-D8 75 50 - 150 04/27120 16:55 04127120 16:55 1
Client Sample ID: SV-14R-042220
Date Collected: 04/22/20 14:11
Date Received: 05/08/20 15:16
Lab Sample ID: 140-19046-4
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte Result Qualifier
RL
MDL Unit D Prepared
Analyzed
Dil Fac
2-METHYLNAPHTHALENE ND U
25
3.2 UG/M3 04/27/2018:22
04/27/2018:22
1
NAPHTHALENE ND U
25
2.1 UG/M3 04/27/2018:22
04/27/2018:22
1
Surrogate %Recovery Qualifier
Limits
Prepared
Analyzed
Dil Fac
NAPHTHALENE-D8 72
50 - 150
04127120 18:22
04127120 18:22
1
Client Sample ID: SV-5R-042220
Date Collected: 04/22/20 15:11
Date Received: 05/08/20 15:16
Method: TO17 - General Subcontract Method
Analyte Result Qualifier
2-METHYLNAPHTHALENE ND U
NAPHTHALENE ND U
Surrogate
NAPHTHALENE-D8
RL MDL Unit
25 3.2 UG/M3
25 2.1 UG/M3
%Recovery Qualifier Limits
67 50-150
Lab Sample ID: 140-19046-5
Matrix: Air
D Prepared Analyzed Dil Fac
04/27/2019:49 04/27/2019:49 1
04/27/2019:49 04/27/2019:49 1
Prepared Analyzed Dil Fac
0412712019:49 0412712019:49 1
Eurofins TestAmerica, Knoxville
Page 6 of 15 5/8/2020

Client Sample Results
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Client Sample ID: SV-5RD-042220
Date Collected: 04/22/20 15:15
Date Received: 05/08/20 15:16
Job ID: 140-19046-1
SDG: WO 1910445
Lab Sample ID: 140-19046-6
Matrix: Air
Method: T017 - General Subcontract Method
Analyte
Result
Qualifier
RL
MDL Unit D Prepared
Analyzed
Dil Fac
2-METHYLNAPHTHALENE
ND
U
25
3.2 UG/M3 04/27/20 21:15
04/27/20 21:15
1 !—
NAPHTHALENE
ND
U
25
2.1 UG/M3 04/27/20 21:15
04/27/20 21:15
1
Surrogate
%Recovery
Qualifier
Limits
Prepared
Analyzed
Dil Fac
NAPHTHALENE-D8
72
50 - 150
04127120 21:15
04127120 21:15
1
F
F
Eurofins TestAmerica, Knoxville
Page 7 of 15 5/8/2020

Surrogate Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Method: T017 - General Subcontract Method
Matrix: Air
I
NPT
Lab Sample ID
Client Sample ID
(50-150)
140-19046-1
SV-12R-042220
75
140-19046-2
SV-13R-042220
69
140-19046-3
SV-10R2-042220
75
140-19046-4
SV-14R-042220
72
140-19046-5
SV-5R-042220
67
140-19046-6
SV-5RD-042220
72
Surrogate Legend
NPT = NAPHTHALENE-D8
Method: T017 - General Subcontract Method
Matrix: AIR
NPT
Lab Sample ID
Client Sample ID
(50-150)
2004484-07A
Method Blank
81
2004484-09A
Lab Control Sample
79
2004484-09AA
Lab Control Sample Dup
79
Surrogate Legend
NPT = NAPHTHALENE-D8
Job ID: 140-19046-1
SDG: WO 1910445
Prep Type: Total/NA
Percent Surrogate Recovery (Acceptance Limits)
Prep Type: Total/NA
Percent Surrogate Recovery (Acceptance Limits)
Eurofins TestAmerica, Knoxville
Page 8 of 15 5/8/2020

QC Sample Results
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Method: T017 - General Subcontract Method
Lab Sample ID: 2004484-07A
Matrix: AIR
Analysis Batch: 11042702
Blank Blank
Analyte Result Qualifier RL MDL Unit
2-METHYLNAPHTHALENE ND U 25 UG/M3
NAPHTHALENE ND U 25 UG/M3
Blank Blank
Job ID: 140-19046-1
SDG: WO 1910445
Client Sample ID: Method Blank
Prep Type: Total/NA
Prep Batch: 11042702_P
D Prepared Analyzed Dil Fac
04/27/2012:33 04/27/2012:33 1
04/27/2012:33 04/27/2012:33 1
Surrogate
%Recovery Qualifier Limits
Prepared Analyzed DY Fac
NAPHTHALENE-D8
81 50 - 150
04127120 12:33 04127120 12:33 1
Lab Sample ID: 2004484-09A
Client Sample ID: Lab Control Sample
C
Matrix: AIR
Prep Type: Total/NA
Analysis Batch: 11042702
Prep Batch: 11042702_P
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier
Unit D %Rec Limits
2-METHYLNAPHTHALENE
100
107
UG/M3 107 70-130
NAPHTHALENE
100
102
UG/M3 102 70-130
LCS LCS
Surrogate
%Recovery Qualifier
NAPHTHALENE-D8
79
Lab Sample ID: 2004484-09AA
Matrix: AIR
Analysis Batch: 11042702
Analyte
2-METHYLNAPHTHALENE
NAPHTHALENE
LCS Dup LCS Dup
Surrogate
%Recovery Qualifier
NAPHTHALENE-D8
79
Limits
50-150
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Prep Batch: 11042702 P
Spike
LCS Dup
LCS Dup %Rec. RPD
Added
Result
Qualifier Unit D %Rec Limits RPD Limit
100
ill
UG/M3 ill 70 -130 3.7 25
100
102
UG/M3 102 70-130 0 25
Limits
50-150
Eurofins TestAmerica, Knoxville
Page 9 of 15 5/8/2020

QC Association Summary
Client: CH21VI Hill, Inc.
Job ID: 140-19046-1
Project/Site: Poplar Tent
Road
SDG: WO 1910445
Subcontract
Analysis Batch: 11042702
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
140-19046-1
SV-12R-042220
Total/NA
Air
T017
11042702—P
140-19046-2
SV-13R-042220
Total/NA
Air
T017
11042702 P
140-19046-3
SV-10R2-042220
Total/NA
Air
T017
11042702_P
140-19046-4
SV-14R-042220
Total/NA
Air
T017
11042702 P
140-19046-5
SV-5R-042220
Total/NA
Air
T017
11042702 P
140-19046-6
SV-5RD-042220
Total/NA
Air
T017
11042702 P
2004484-07A
Method Blank
Total/NA
AIR
T017
11042702 P
2004484-09A
Lab Control Sample
Total/NA
AIR
T017
11042702_P
2004484-09AA
Lab Control Sample Dup
Total/NA
AIR
T017
11042702_P
Prep Batch: 11042702_P
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
140-19046-1
SV-12R-042220
Total/NA
Air
NONE
140-19046-2
SV-13R-042220
Total/NA
Air
NONE
140-19046-3
SV-10R2-042220
Total/NA
Air
NONE
140-19046-4
SV-14R-042220
Total/NA
Air
NONE
140-19046-5
SV-5R-042220
Total/NA
Air
NONE
140-19046-6
SV-5RD-042220
Total/NA
Air
NONE
2004484-07A
Method Blank
Total/NA
AIR
NONE
2004484-09A
Lab Control Sample
Total/NA
AIR
NONE
2004484-09AA
Lab Control Sample Dup
Total/NA
AIR
NONE
Eurofins TestAmerica, Knoxville
Page 10 of 15 5/8/2020

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-19046-1
SDG: WO 1910445
Client Sample ID: SV-12R-042220 Lab Sample ID: 140-19046-1
Date Collected: 04/22/20 09:38 Matrix: Air
Date Received: 05/08/20 15:16
Batch
Batch
Prep Type Type
Method Run
Total/NA Prep
NONE
Total/NA Analysis
T017
Instrument ID:
Client Sample ID: SV-13R-042220
Date Collected: 04/22/20 12:24
Date Received: 05/08/20 15:16
Batch Batch
Prep Type Type Method Run
Total/NA Prep NONE
Total/NA Analysis T017
Instrument ID:
Client Sample ID: SV-10R2-042220
Date Collected: 04/22/20 11:47
Date Received: 05/08/20 15:16
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
1 11042702 04/27/2014:01 Eurofins
_P
1 11042702 04/27/2014:01 SU Eurofins
L-du adulpiu mi: 1'*U- Iyu-Fv-c
Matrix: Air
Dil Initial
Final Batch
Prepared
F
Factor Amount
Amount Number
or Analyzed Analyst
Lab M
1
11042702
04/27/2015:27
Eurofins
_P
1
11042702
04/27/2015:27 SU
Eurofins
Lab Sample ID: 140-19046-3
Matrix: Air C
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Prep NONE
1
11042702
04/27/2016:55
Eurofins
_P
Total/NA Analysis T017
1
11042702
04/27/2016:55
SU
Eurofins
Instrument ID:
Client Sample ID: SV-14R-042220
Lab Sample
ID: 140-19046-4
Date Collected: 04/22/20 14:11
Matrix: Air
Date Received: 05/08/20 15:16
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Prep NONE
1
11042702
04/27/2018:22
Eurofins
_P
Total/NA Analysis T017
1
11042702
04/27/2018:22
SU
Eurofins
Instrument ID:
Client Sample ID: SV-5R-042220 Lab Sample ID: 140-19046-5
Date Collected: 04/22/20 15:11 Matrix: Air
Date Received: 05/08/20 15:16
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Prep NONE 1 11042702 04/27/2019:49 Eurofins
_P
Total/NA Analysis T017 1 11042702 04/27/2019:49 SU Eurofins
Instrument ID:
Page 11 of 15
Eurofins TestAmerica, Knoxville
5/8/2020

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-19046-1
SDG: WO 1910445
Client Sample ID: SV-5RD-042220 Lab Sample ID: 140-19046-6
Date Collected: 04/22/20 15:15 Matrix: Air
Date Received: 05/08/20 15:16
Batch
Batch
Prep Type Type
Method Run
Total/NA Prep
NONE
Total/NA Analysis
T017
Instrument ID:
Client Sample ID: Method Blank
Date Collected: N/A
Date Received: N/A
Batch Batch
Prep Type Type Method Run
Total/NA Prep NONE
Total/NA Analysis T017
Instrument ID:
Client Sample ID: Lab Control Sample
Date Collected: N/A
Date Received: N/A
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
1 11042702 04/27/20 21:15 Eurofins
_P
1 11042702 04/27/20 21:15 SU Eurofins
L-du adlmpiu iu. Zvu-+'+o-+-UIM
Matrix: AIR
Dil Initial
Final Batch
Prepared
Factor Amount
Amount Number
or Analyzed
Analyst Lab m
1
11042702
04/27/2012:33
Eurofins
_P
1
11042702
04/27/2012:33
SU Eurofins
Lab Sample ID: 2004484-09A
Matrix: AIR C
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method
Run Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Prep NONE
1
11042702
04/27/20 09:39
Eurofins
_P
Total/NA Analysis T017
1
11042702
04/27/20 09:39
SU
Eurofins
Instrument ID:
Client Sample ID: Lab Control Sample Dup
Lab
Sample ID:
2004484-09AA
Date Collected: N/A
Matrix: AIR
Date Received: N/A
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method
Run Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Prep NONE
1
11042702
04/27/2010:22
Eurofins
_P
Total/NA Analysis T017
1
11042702
04/27/2010:22
SU
Eurofins
Instrument ID:
Laboratory References:
Eurofins = Eurofins Air Toxics, 180 Blue Ravine Road, Suite B, Folsom, CA 95630
Page 12 of 15
Eurofins TestAmerica, Knoxville
5/8/2020

Method Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Method Method Description Protocol
Subcontract T017 - naphthalene and 2-methylnaphthalene None
Protocol References:
None = None
Laboratory References:
Eurofins = Eurofins Air Toxics, 180 Blue Ravine Road, Suite B, Folsom, CA 95630
F
Job ID: 140-19046-1
SDG: WO 1910445
Laboratory
Eurofins
L
Eurofins TestAmerica, Knoxville
Page 13 of 15 5/8/2020

Sample Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-19046-1
SDG: WO 1910445
Lab Sample ID
Client Sample ID
Matrix
Collected
Received Asset ID
140-19046-1
SV-12R-042220
Air
04/22/20 09:38
05/08/20 15:16
140-19046-2
SV-13R-042220
Air
04/22/2012:24
05/08/2015:16
140-19046-3
SV-10R2-042220
Air
04/22/2011:47
05/08/2015:16
140-19046-4
SV-14R-042220
Air
04/22/2014:11
05/08/2015:16
140-19046-5
SV-5R-042220
Air
04/22/2015:11
05/08/2015:16
140-19046-6
SV-5RD-042220
Air
04/22/2015:15
05/08/2015:16
Eurofins TestAmerica, Knoxville
Page 14 of 15 5/8/2020

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5/8/2020

.;acobs
May 29, 2020
Delivery via email
Stephen and Teresa Duffey
11092 Poplar Tent Road
Huntersville, NC 28078
Subject: April 2020 Water Well Sampling Results
Poplar Tent Road Site, Concord, North Carolina
NCDEQ Groundwater Incident No. 88110
Dear Mr. and Mrs. Duffey,
14120 Ballantyne Corporate Place, Suite 200
Charlotte, North Carolina 28277
United States
T +1.704.S44.4040
F +1.704.544.4041
www.jacobs.com
As you are aware, Jacobs, working on behalf of Plantation Pipe Line Company (Plantation), has been
monitoring groundwater in the area of your property as part of a Corrective Action Plan (CAP) required by
the North Carolina Department of Environmental Quality (NCDEQ) in response to a turbine fuel release
that occurred in April 1976. As part of this monitoring, samples were collected in April 2020 from the
water supply well located on your property. For the purposes of our monitoring activities, we have
designated this well as WSW-13.
The samples were analyzed by SGS North America, Inc. of Scott, Louisiana and Eurofins TestAmerica of
Pittsburgh, Pennsylvania for benzene, toluene, ethylbenzene, xylenes (BTEX), and naphthalene using
U.S. Environmental Protection Agency (EPA) Method 8260B. The BTEX and naphthalene compounds are
found in petroleum products and serve as an indicator of petroleum contamination in the environment.
The following is a summary of the April 2020 analytical results:
The samples collected on April 22, 2020, from well WSW-13, did not contain detectable
concentrations of BTEX or naphthalene.
Copies of the validated laboratory analytical reports are attached for your review (Attachment A). When
reviewing the attached laboratory reports, please refer to the results associated with Sample ID WSW-13.
If you have any questions or wish to discuss any matter involving these results or Plantation's monitoring
in the area, please do not hesitate to contact Mr. Jerry Aycock with Plantation at 770.751.4165.
Regards
_��/CO�&O
Mike Skeean, P.E.
Senior Project Manager
N.C. Professional Engineer, License No. 030914

Stephen and Teresa Duffey
May 29, 2020
Page 2
Copies to: Jerry Aycock, Plantation (via email)
Trudy Beverly, North Carolina Department of Environmental Quality (via email and FTP)
William F. Pilkington, D.P.A, Cabarrus County Health Director/Cabarrus Health Alliance
(via email)
David Troutman, R.S., Environmental Health/Cabarrus Health Alliance (via email)
File — Jacobs
Attachment:
Attachment A — Laboratory Analytical Report

Attachment A
Laboratory Analytical Report

.;acobs
Memorandum
14120 Ballantyne Corporate Place, Suite 200
Charlotte, North Carolina 28277
United States
T +1.704.544.4040
F +1.704.544.4041
www.jacobs.com
Subject Data Validation Summary - Plantation Pipe Line Poplar Tent Road Site
Project Name Plantation Pipe Line Poplar Tent Road Site
Attention Kelly Gutowski/CLT, Jacobs
Mike Skeean/CLT, Jacobs
From Tiffany Davis/GNV, Jacobs
Date May 18, 2020
Copies to Juan Acaron/GNV, Jacobs
1. Introduction
The purpose of this memorandum is to present the results of the data validation process for the water
supply well samples collected at the Plantation Pipe Line Company (PPL) Poplar Tent Road. The samples
were collected in April 2020.
Samples were submitted to SGS North America Inc. in Scott, Louisiana and Test America Laboratories in
Pittsburgh, Pennsylvania for the following analyses:
• SW8260B Volatile Organic Compounds (VOCs)
These data were validated for compliance with the analytical method requirements. This process included
a review of these data to assess the accuracy, precision, and completeness based upon procedures
described in guidance documents such as the Environmental Protection Agency (EPA) National Functional
Guidelines for Organic Data Review (EPA 2017). The Quality assurance/quality control (QA/QC) summary
forms and data reports were reviewed and the resulting findings are documented within each subsection
that follows.
During the data validation, if QA/QC parameters were not within the acceptance limits, associated sample
results were appended with a primary qualifying flag that indicated a possible anomaly with these data.
The qualifying flags originated during the data review and validation processes. This qualification also
included the use of secondary sub -qualifier flags. The secondary qualifiers provide the reasoning behind
the assignment of a qualifier to these data. The definitions of the primary qualifiers are presented below.
2. Validation Flag Definitions
The following primary qualifiers were used to qualify the data:
[_]: Detected. The analyte was analyzed for and detected at the concentration shown.
[J]: Estimated. The analyte was present but the reported value may not be accurate or precise.

Data Validation Summary — Plantation Pipe Line Poplar Tent Road Site
[U]: Undetected. The analyte was analyzed for but not detected above the method detection limit.
[UJ]: Detection limit estimated. The analyte was analyzed for but qualified as not detected; the detection
Limit is estimated.
[R]: Rejected. The data are not useable.
[X]: Excluded. Data were not used due to another value being more appropriate.
3. Organic Parameters
3.1 Quality Control Review
The following list represents the QA/QC measures that were reviewed during the data quality evaluation
procedure for organic data:
• Holding Times. The holding times are evaluated to verify that samples were extracted and analyzed
within holding times.
• Blank samples. Method blank and trip blank samples were provided for this project. Blank samples
enable the reviewer to determine if an analyte may be attributed to sampling or laboratory
procedures, rather than environmental contamination from site activities.
• Surrogate Recoveries. Surrogate Compounds are added to each sample and the recoveries are used to
monitor lab performance and possible matrix interference.
• Lab Control Sample (LCS). These samples are a "controlled matrix", laboratory reagent water, in which
target compounds have been added prior to extraction/analysis. The recoveries serve as a monitor of
the overall performance of each step during the analysis, including sample preparation.
• Matrix Spike/Matrix Spike Duplicate (MS/MSD) Samples. Spike recovery is used to evaluate potential
matrix interferences, as well as accuracy. Precision information is also determined by calculating the
reproducibility between the recoveries of each spiked parameter.
• Field Duplicate Samples. These samples are collected to determine precision between a native and its
duplicate. This information can only be determined when target compounds are detected.
4. Volatile Organic Compound Analyses
The QA/QC parameters for VOC analyses by SW-846 8260B for all samples were within acceptable control
Limits with the exceptions listed below. A brief overview of the data evaluation follows.
4.1 Holding Time
All holding time requirements were met.
4.2 Field Duplicates
Duplicate field samples were collected and submitted to the laboratory for analysis. There are two
conditions under which the native and field duplicate are deemed outside acceptance criteria. For
condition one, if a result for the native and field duplicate are less than five times the reporting limit, the
two results must be within one times the reporting limit to meet acceptance criteria. In condition two, if the
result is greater than five times the reporting limit, the two results must agree to within 20 percent relative
percent difference to meet acceptance criteria. No field duplicates were included in this data set.

Data Validation Summary — Plantation Pipe Line Poplar Tent Road Site
4.3 Recoveries - Surrogate, MS/MSD and LCS/LCSD
Surrogates, MS/MSD, and LCS/LCSD recoveries all met acceptance criteria with the exception of
naphthalene for spiked sample WSW-13. Naphthalene exhibited a high recovery in the MSD for SDG
J105052-1. Sample result was not detected, therefore no data were affected.
4.4 Analytical Blanks
No target analytes were detected in the blanks.
5. PARCC
Precision is defined as the agreement between duplicate results, and was estimated by comparing
duplicate MS recoveries, and field duplicate sample results. The precision between the duplicate and MS
recoveries were within acceptable criteria indicating no matrix interference.
Accuracy is a measure of the agreement between an experimental determination and the true value of the
parameter. Each of the samples were spiked with a surrogate compound with a known concentration
before preparation. The surrogate and MS/MSD data provides a measure of the matrix effects as they may
affect accuracy and precision of the analytical method. The LCS results demonstrate accuracy of the
method. Spike recoveries were mostly within the method acceptance limits, showing no evidence of matrix
interferences that affect the usability of the data.
Representativeness criteria are a qualitative measure of the degree to which sample data accurately and
precisely represent a characteristic environmental condition. Representativeness is a subjective parameter
and is used to evaluate the efficacy of the sampling plan design. Representativeness was demonstrated by
providing full descriptions in the project scoping documents of the sampling techniques and the rationale
used for selecting sampling locations.
Completeness is defined as the percentage of measurements that are judged to be valid compared to the
total number of measurements made. There were no data rejected and or seen as not usable due to
quality control or sampling issues.
Comparability is another qualitative measure designed to express the confidence with which one data set
may be compared to another. Factors that affect comparability are sample collection and handling
techniques, sample matrix type, and analytical method. Comparability is limited by the other PARCC
parameters because data sets can be compared with confidence only when precision and accuracy are
known. Data from this investigation are comparable with other previous data collected at the site due to
the laboratories use of EPA or appropriate methods to analyze the samples and supported by the results
of the laboratory's analytical reports.
6. Conclusion
A review of the analytical data submitted regarding the investigation of PPL Poplar Tent Road sampling
event in April 2020 by Jacobs has been completed. The validation demonstrated that the analytical
systems were in control and all data results can be used in the decision -making process.

ffm
Scott, LA
The results set forth herein are provided by SGS North America Inc. a-Hl ydcopy 2. 0
Automated Report
Technical Report for
Kinder Morgan
CHMHNCC: PPL/Poplar Tent Road (Water Wells), Concord, NC
SGS Job Number: LA63399
Sampling Date: 04/22/20
Report to:
Jacobs CH2M
14120 Ballantyne Corporate Place
Charlotte, NC 28277
mike. skeean@jacobs. com; kelly. gutowski@jacobs.
ATTN: Mike Skeean
Total number of pages in report: 15
Ac Fp
Ar .
Test results contained within this data package meet the requirements Ron Benj a illl n
of the National Environmental Laboratory Accreditation Program Lab Director
and/or state specific certification programs as applicable.
Client Service contact: Ralph Frye 337-237-4775
Certifications: LDEQ(2048), LDHH(LA150012), AR(14-045-04), AZ(AZ0805), FL(E87657), IL(200082), KY(#31),
NC(487), SC(73004001), NJ(LA007), TX(T104704186-18-16), WV(257)
This report shall not be reproduced, except in its entirety, without the written approval of SGS.
Test results relate only to samples analyzed.
SGS North America Inc. • 500 Ambassador Caffery • Scott, LA 70583 • tel: [phone]
SGS is the sole authority for authorizing edits or modifications to this document. Please share your ideas about
Unauthorized modification of this report is strictly prohibited. how we can serve you better at:
Review standard terms at: http://www.sgs.com/en/terms-and-conditions [e-mail]
1 of 15
LA63399

Sections:
Table of Contents
-I-
Section1: Sample Summary...................................................................................................
3
Section2: Summary of Hits....................................................................................................
4
Section3: Sample Results........................................................................................................
5
3.1: LA63399-1: WSW-13...................................................................................................
6
3.2: LA63399-2: TBO1-042220...........................................................................................
7
Section4: Misc. Forms............................................................................................................
8
4.1: Chain of Custody...........................................................................................................
9
Section 5: MS Volatiles - QC Data Summaries.....................................................................
12
5.1: Method Blank Summary................................................................................................
13
5.2: Blank Spike/Blank Spike Duplicate Summary..............................................................
14
5.3: Matrix Spike/Matrix Spike Duplicate Summary...........................................................
15
W,

SGS North America Inc.
Sample Summary
Kinder Morgan
Job No: LA63399
CHMHNCC: PPL/Poplar Tent Road (Water Wells), Concord, NC
Sample Collected Matrix Client
Number Date Time By Received Code Type Sample I D
This report contains results reported as ND = Not detected. The following applies:
Organics ND = Not detected above the RL
LA63399-1 04/22/20 09:40 TS 04/25/20 AQ Water WSW-13
LA63399-ID 04/22/20 09:40 TS 04/25/20 AQ Water Dup/MSD WSW-13
LA63399-IS 04/22/20 09:40 TS 04/25/20 AQ Water Matrix Spike WSW-13
LA63399-2 04/22/20 00:00 TS 04/25/20 AQ Trip Blank Water TBO1-042220
6 3of15
LA63399

Summary of Hits Page 1 of 1
Job Number: LA63399
Account: Kinder Morgan
Project: CHMHNCC: PPL/Poplar Tent Road (Water Wells), Concord, NC
Collected: 04/22/20
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
No hits reported in this sample.
LA63399-2 TBOI-042220
No hits reported in this sample.
6 4of15
LA63399

i
SGS
Scott, LA
Section 3
Sample Results
Report of Analysis
6 5of15
LA63399

SGS North America Inc.
Report of Analysis
Client Sample ID: WSW-13
Lab Sample ID: LA63399-1 Date Sampled: 04/22/20
Matrix: AQ - Water Date Received: 04/25/20
Method: SW846 8260B Percent Solids: n/a
Project: CHMHNCC: PPL/Poplar Tent Road (Water Wells), Concord, NC
Page 1 of 1 j
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2X0102764.D 1 04/29/20 08:03 LS n/a n/a V2X4221
Run #2
Purge Volume
Run # 1 5.0 ml
Run #2
Purgeable Aromatics, Naphthalene
CAS No.
Compound
Result
RL
Units Q
71-43-2
Benzene
ND
1.0
ug/l
108-88-3
Toluene
ND
1.0
ug/l
100-41-4
Ethylbenzene
ND
1.0
ug/l
1330-20-7
Xylene (total)
ND
2.0
ug/1
91-20-3
Naphthalene
ND
5.0
ug/l
CAS No.
Surrogate Recoveries
Run# 1
Run# 2
Limits
17060-07-0
1,2-Dichloroethane-D4
97%
81-120%
2037-26-5
Toluene-D8
104%
93-105%
460-00-4
4-Bromofluorobenzene
103%
89-107%
ND = Not detected
RL = Reporting Limit
E = Indicates value exceeds calibration range
J = Indicates an estimated value
B = Indicates analyte found in associated method blank
N = Indicates presumptive evidence of a compound
6 6of15
LA63399

SGS North America Inc.
Report of Analysis
Client Sample ID: TBOl-042220
Lab Sample ID: LA63399-2 Date Sampled: 04/22/20
Matrix: AQ - Trip Blank Water Date Received: 04/25/20
Method: SW846 8260B Percent Solids: n/a
Project: CHMHNCC: PPL/Poplar Tent Road (Water Wells), Concord, NC
Page 1 of 1 N
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2XO102763.D 1 04/29/20 07:39 LS n/a n/a V2X4221
Run #2
Purge Volume
Run # 1 5.0 ml
Run #2
Purgeable Aromatics, Naphthalene
CAS No.
Compound
Result
RL
Units Q
71-43-2
Benzene
ND
1.0
ug/l
108-88-3
Toluene
ND
1.0
ug/l
100-41-4
Ethylbenzene
ND
1.0
ug/l
1330-20-7
Xylene (total)
ND
2.0
ug/1
91-20-3
Naphthalene
ND
5.0
ug/l
CAS No.
Surrogate Recoveries
Run# 1
Run# 2
Limits
17060-07-0
1,2-Dichloroethane-D4
93%
81-120%
2037-26-5
Toluene-138
107%
93-105%
460-00-4
4-Bromofluorobenzene
105%
89-107%
ND = Not detected
RL = Reporting Limit
E = Indicates value exceeds calibration range
J = Indicates an estimated value
B = Indicates analyte found in associated method blank
N = Indicates presumptive evidence of a compound
6 7of15
LA63399

ffm
Scott, LA
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
• Chain of Custody
1
Section 4
6 8of15
LA63399

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LA63399

SGS Sample Receipt Summary
Job Number: LA63399 Client: JACOBS
Date / Time Received: 4/25/2020 8:40:00 AM Delivery Method:
Cooler Temps (Initial/Adjusted): #1: (1.8/1.8): DV462
Cooler Security Y or N
Y or N
1. Custody Seals Present: ❑d
❑
3. COC Present: 2 ❑
2. Custody Seals Intact: W
❑
4. Smpl Dates/Time OK W ❑
Cooler Temperature
Y or N
1. Temp criteria achieved:
❑�
❑
2. Thermometer ID:
DV462;
3. Cooler media:
Ice (direct contact)
4. No. Coolers:
1
Quality Control Preservation
Y
or N N/A
1. Trip Blank present / cooler:
0
❑ ❑
2. Trip Blank listed on CDC:
0
❑ ❑
3. Samples preserved properly:
W11
❑
4. VOCs headspace free:
0
❑ ❑
Fed Ex
Project: POPLAR TENT
Airbill Xs: 4920 6966 1404
Sample Integrity - Documentation
1. Sample labels present on bottles:
2. Container labeling complete:
3. Sample container label / COC agree:
Sample Integrity - Condition
1. Sample recvd within HT:
2. All containers accounted for:
3. Condition of sample:
Sample Integrity - Instructions
1. Analysis requested is clear:
2. Bottles received for unspecified tests
3. Sufficient volume recvd for analysis:
4. Compositing instructions clear:
5. Filtering instructions clear:
Y or N
❑� ❑
o ❑
❑� ❑
Y or N
❑� ❑
o ❑
Intact
Y or N N/A
❑� ❑
❑ 0
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❑ ❑ ❑O
❑ ❑ ❑J
LA63399: Chain of Custody
Page 3 of 3
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11 of 15
LA63399

i
SGS
Scott, LA
Section 5
MS Volatiles
QC Data Summaries
Includes the following where applicable:
• Method Blank Summaries
• Blank Spike Summaries
• Matrix Spike and Duplicate Summaries
� 12 of 15
LA63399

Method Blank Summary Page 1 of 1
Job Number: LA63399
Account: KINDERGA Kinder Morgan
Project: CHMHNCC: PPL/Poplar Tent Road (Water Wells), Concord, NC
Sample
File ID
DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
V2X4221-MB2
2X0102745.D
1
04/29/20
LS
n/a
n/a
V2X4221
The QC reported here applies to the following samples:
LA63399-1, LA63399-2
CAS No.
Compound
Result
RL Units Q
71-43-2
Benzene
ND
1.0 ug/l
100-41-4
Ethylbenzene
ND
1.0 ug/l
91-20-3
Naphthalene
ND
5.0 ug/l
108-88-3
Toluene
ND
1.0 ug/l
1330-20-7
Xylene (total)
ND
2.0 ug/l
CAS No.
Surrogate Recoveries
Limits
17060-07-0
1,2-Dichloroethane-D4
93%
81-120%
2037-26-5
Toluene-D8
101%
93-105%
460-00-4
4-Bromofluorobenzene
100%
89-107%
Method: SW846 8260B
� 13 of 15
LA63399

Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number: LA63399
Account: KINDERGA Kinder Morgan
Project: CHMHNCC: PPL/Poplar Tent Road (Water Wells), Concord, NC
Sample
File ID
DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
V2X4221-BS1
2X0102742.D
1
04/28/20
LS
n/a
n/a
V2X4221
V2X4221 -BSD 1
2X0102743.D
1
04/28/20
LS
n/a
n/a
V2X4221
The QC reported here applies to the following samples: Method: SW846 8260B
LA63399-1, LA63399-2
Spike
BSP BSP
BSD
BSD
Limits
CAS No.
Compound
ug/l
ug/l %
ug/1
%
RPD
Rec/RPD
71-43-2
Benzene
20
21.4 107
20.6
103
4
82-119/11
100-41-4
Ethylbenzene
20
20.3 102
18.1
91
11
82-120/11
91-20-3
Naphthalene
20
21.7 109
18.7
94
15
60-137/15
108-88-3
Toluene
20
20.0 100
18.7
94
7
82-118/12
1330-20-7
Xylene (total)
60
60.8 101
54.4
91
11
82-122/11
CAS No.
Surrogate Recoveries
BSP
BSD
Limits
17060-07-0
1,2-Dichloroethane-D4
100%
100%
81-120%
2037-26-5
Toluene-D8
105%
104%
93-105%
460-00-4
4-Bromofluorobenzene
103%
103%
89-107%
* = Outside of Control Limits.
6 14 of 15
LA63399

Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1
Job Number: LA63399
Account: KINDERGA Kinder Morgan
Project: CHMHNCC: PPL/Poplar Tent Road (Water Wells), Concord, NC
Sample
File ID
DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
LA63399-1MS
2X0102766.D
2
04/29/20
LS
n/a
n/a
V2X4221
LA63399-1MSD
2X0102767.D
2
04/29/20
LS
n/a
n/a
V2X4221
LA63399-1
2X0102764.D
1
04/29/20
LS
n/a
n/a
V2X4221
The QC reported here applies to the following samples: Method: SW846 8260B
LA63399-1, LA63399-2
LA63399-1
Spike
MS MS
Spike
MSD
MSD
Limits
CAS No.
Compound
ug/l Q
ug/l
ug/l %
ug/l
ug/l
%
RPD
Rec/RPD
71-43-2
Benzene
ND
40
39.3 98
40
35.3
88
11
41-155/14
100-41-4
Ethylbenzene
ND
40
34.0 85
40
30.7
77
10
50-147/15
91-20-3
Naphthalene
ND
40
33.3 83
40
33.3
83
0
30-153/24
108-88-3
Toluene
ND
40
32.7 82
40
30.3
76
8
40-153/15
1330-20-7
Xylene (total)
ND
120
101 84
120
94.4
79
7
46-154/15
CAS No.
Surrogate Recoveries
MS
MSD
LA63399-1
Limits
17060-07-0
1,2-Dichloroethane-D4
99%
102%
97%
81-120%
2037-26-5
Toluene-D8
102%
104%
104%
93-105%
460-00-4
4-Bromofluorobenzene
101%
102%
103%
89-107%
* = Outside of Control Limits.
6 15 of 15
LA63399

urofins Environment Testing
America
ANALYTICAL REPORT
Eurofins TestAmerica, Pittsburgh
301 Alpha Drive
RIDC Park
Pittsburgh, PA 15238
Tel: [phone]
Laboratory Job ID: 180-105052-1
Client Project/Site: Poplar Tent Road
Foi
CH2M Hill, Inc.
14120 Ballantyne Corporate Place
Suite 200
Charlotte, North Carolina 28277
Attn: Mike Skeean
C
Authorized for release by:
511112020 10:40:32 AM
Jamie McKinney, Senior Project Manager
[phone]
[e-mail]
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.
PA Lab ID: 02-00416

Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Table of Contents
Laboratory Job ID: 180-105052-1
CoverPage ..............................................
1
Table of Contents .........................................
2
Case Narrative ...........................................
3
Definitions/Glossary.......................................
4
Certification Summary ......................................
5
Sample Summary .........................................
7
Method Summary .........................................
8
Lab Chronicle ............................................
9
Client Sample Results ......................................
10
QC Sample Results ........................................
11
QC Association Summary ...................................
13
Chain of Custody ..........................................
14
Receipt Checklists .........................................
15
Eurofins TestAmerica, Pittsburgh
Page 2 of 15 5/11/2020

Case Narrative C
Client: CH2M Hill, Inc. Job ID: 180-105052-1
Project/Site: Poplar Tent Road
Job ID: 180-105052-1
Laboratory: Eurofins TestAmerica, Pittsburgh
Narrative
Job Narrative
180-105052-1
Comments
No additional comments.
Receipt
The samples were received on 4/25/2020 9:30 AM; the samples arrived in good condition, properly preserved and, where required, on ice
The temperature of the cooler at receipt was 2.11 C.
GC/MS VOA
Method 8260B: The matrix spike duplicate (MSD) recoveries for analytical batch 180-314487 were outside control limits. Sample matrix
interference is suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits.
Method 8260B: Internal standard (ISTD) response for TBA-d9 for the following method blank was outside acceptance criteria: (MB
180-314487/5). This ISTD does not correspond to any of the requested target compounds; therefore, the data have been reported.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Eurofins TestAmerica, Pittsburgh
Page 3 of 15 5/11 /2020

Definitions/Glossary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Qualifiers
GUMS VOA
Qualifier Qualifier Description
F1 MS and/or MSD recovery exceeds control limits.
Glossary
Job ID: 180-105052-1
0
Abbreviation 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
%R Percent Recovery
CFL Contains Free Liquid
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)
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
PQL Practical Quantitation Limit
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)
Eurofins TestAmerica, Pittsburgh
Page 4 of 15 5/11 /2020

Accreditation/Certification Summary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Laboratory: Eurofins TestAmerica, Pittsburgh
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Job ID: 180-105052-1
Authority
Program
Identification Number
Expiration Date
Arkansas DEQ
State
19-033-0
06-27-20
California
State
2891
04-30-20 *
Connecticut
State
PH-0688
09-30-20
Florida
NELAP
E871008
06-30-20
Georgia
State
PA 02-00416
04-30-20 *
Illinois
NELAP
004375
06-30-20
Kansas
NELAP
E-10350
01-31-21
Kentucky (UST)
State
162013
04-30-20 *
Kentucky (WW)
State
KY98043
12-31-20
Louisiana
NELAP
04041
06-30-20
Maine
State
PA00164
03-06-22
Minnesota
NELAP
042-999-482
12-31-20
Nevada
State
PA00164
07-31-20
New Hampshire
NELAP
2030
04-05-21
New Jersey
NELAP
PA005
06-30-20
New York
NELAP
11182
04-01-21
North Carolina (WW/SW)
State
434
01-01-21
North Dakota
State
R-227
04-30-20 *
Oregon
NELAP
PA-2151
02-06-21
Pennsylvania
NELAP
02-00416
04-30-21
Rhode Island
State
LAO00362
12-31-20
South Carolina
State
89014
04-30-20 *
Texas
NELAP
T104704528
03-31-21
US Fish & Wildlife
US Federal Programs
058448
07-31-20
USDA
Federal
P-Soil-01
06-26-22
USDA
US Federal Programs
P330-16-00211
06-26-22
Utah
NELAP
PA001462019-8
05-31-20
Virginia
NELAP
10043
09-15-20
West Virginia DEP
State
142
02-01-21
Wisconsin
State
998027800
08-31-20
* Accreditation/Certification renewal pending - accreditation/certification considered valid.
Eurofins TestAmerica, Pittsburgh
Page 5 of 15 5/11 /2020

Accreditation/Certification Summary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Laboratory: Eurofins TestAmerica, Knoxville
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Job ID: 180-105052-1
Authority
Program
Identification Number
Expiration Date
AFCEE
N/A
ANAB
Dept. of Defense ELAP
L2311
02-13-22
ANAB
Dept. of Energy
L2311.01
02-13-22
ANAB
ISO/IEC 17025
L2311
02-13-22
ANAB
ISO/IEC 17025
L2311
02-14-22
Arkansas DEQ
State
88-0688
06-16-20
California
State
2423
06-30-20
Colorado
State
TN00009
02-28-21
Connecticut
State
PH-0223
09-30-21
Florida
NELAP
E87177
06-30-20
Georgia (DW)
State
906
12-11-22
Hawaii
State
NA
12-11-21
Kansas
NELAP
E-10349
11-01-20
Kentucky (DW)
State
90101
01-01-21
Louisiana
NELAP
83979
07-02-20
Louisiana (DW)
State
LA019
12-31-20
Maryland
State
277
03-31-21
Michigan
State
9933
12-11-22
Nevada
State
TN00009
07-31-20
New Hampshire
NELAP
299919
01-17-21
New Jersey
NELAP
TN001
06-30-20
New York
NELAP
10781
03-31-21
North Carolina (DW)
State
21705
07-31-20
North Carolina (WW/SW)
State
64
12-31-20
Ohio VAP
State
CL0059
08-28-20
Oklahoma
State
9415
09-01-20
Oregon
NELAP
TN I O189
01-02-21
Pennsylvania
NELAP
68-00576
12-31-20
Tennessee
State
02014
12-11-22
Texas
NELAP
T104704380-18-12
08-31-20
US Fish & Wildlife
US Federal Programs
058448
07-31-20
USDA
US Federal Programs
P330-19-00236
08-20-22
Utah
NELAP
TN00009
07-31-20
Virginia
NELAP
460176
09-15-20
Washington
State
C593
01-19-21
West Virginia (DW)
State
9955C
01-01-21
West Virginia DEP
State
345
05-01-21
Wisconsin
State
998044300
08-31-20
Eurofins TestAmerica, Pittsburgh
Page 6 of 15 5/11 /2020

Sample Summary
Client: CH21VI Hill, Inc. Job ID: 180-105052-1
Project/Site: Poplar Tent Road
Lab Sample ID Client Sample ID Matrix Collected Received Asset ID
180-105052-1 WSW-13 Water 04/22/20 09:40 04/25/20 09:30
180-105052-2 TB01-042220 Water 04/22/20 00:00 04/25/20 09:30
C
0
Eurofins TestAmerica, Pittsburgh
Page 7 of 15 5/11 /2020

Method Summary
Client: CH2M Hill, Inc.
Job ID: 180-105052-1
Project/Site: Poplar Tent Road
Method Method Description
Protocol Laboratory
EPA 8260B Volatile Organic Compounds (GC/MS)
SW846 TAL PIT
5030B Purge and Trap
SW846 TAL PIT
Protocol References:
SW846 ='Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates.
Laboratory References:
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
Eurofins TestAmerica, Pittsburgh
Page 8 of 15 5/11 /2020

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 180-105052-1
Client Sample ID: WSW-13 Lab Sample ID: 180-105052-1
Date Collected: 04/22/20 09:40 Matrix: Water
Date Received: 04/25/20 09:30
Batch Batch Dil Initial
Prep Type Type Method Run Factor Amount
Total/NA Analysis EPA 8260E 1 5 mL
Instrument ID: CHHP10
Client Sample ID: TB01-042220
Date Collected: 04/22/20 00:00
Date Received: 04/25/20 09:30
Final Batch Prepared
Amount Number or Analyzed Analyst Lab
5 mL 314487 05/04/20 10:50 PJJ TAL PIT
Lab Sample ID: 180-105052-2
Matrix: Water
n
- V
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis EPA 8260E 1 5 mL 5 mL 314487 05/04/20 10:23 PJJ TAL PIT
Instrument ID: CHHP10
Laboratory References:
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
Analyst References:
Lab: TAL PIT
Batch Type: Analysis
PJJ = Patrick Journet
Page 9 of 15
Eurofins TestAmerica, Pittsburgh
5/11 /2020

Client Sample Results
Client: CH2M Hill, Inc.
Job ID: 180-105052-1
Project/Site: Poplar Tent Road
Client Sample ID: WSW-13
Lab Sample ID: 180-105052-1
Date Collected: 04/22/20 09:40
Matrix: Water
Date Received: 04/25/20 09:30
Method: EPA 8260B - Volatile Organic Compounds
(GC/MS)
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Ethylbenzene
ND
5.0
2.2
ug/L
05/04/2010:50 1
Benzene
ND
5.0
2.0
ug/L
05/04/2010:50 1
m,p-Xylene
ND
5.0
1.9
ug/L
05/04/2010:50 1
Naphthalene
ND F1
5.0
3.9
ug/L
05/04/2010:50 1
o-Xylene
ND
5.0
2.4
ug/L
05/04/2010:50 1
Toluene
ND
5.0
1.7
ug/L
05/04/2010:50 1
Surrogate
%Recovery Qualifier
Limits
Prepared Analyzed Dil Fac
1,2-Dichloroethane-d4 (Surr)
76
53- 150
05104120 10:50 1
4-Bromofluorobenzene (Surr)
77
54 - 125
05104120 10:50 1
Dibromofluoromethane (Surr)
79
55 - 150
05104120 10:50 1
Toluene-d8 (Surr)
81
63 - 127
05104120 10:50 1
Client Sample ID: TB01-042220
Lab Sample ID: 180-105052-2
Date Collected: 04/22/20 00:00
Matrix: Water
Date Received: 04/25/20 09:30
Method: EPA 8260B - Volatile Organic Compounds
(GC/MS)
C
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Ethylbenzene
ND
5.0
2.2
ug/L
05/04/2010:23 1
Benzene
ND
5.0
2.0
ug/L
05/04/2010:23 1
m,p-Xylene
ND
5.0
1.9
ug/L
05/04/2010:23 1
Naphthalene
ND
5.0
3.9
ug/L
05/04/2010:23 1
o-Xylene
ND
5.0
2.4
ug/L
05/04/2010:23 1
Toluene
ND
5.0
1.7
ug/L
05/04/2010:23 1
Surrogate
%Recovery Qualifier
Limits
Prepared Analyzed Dil Fac
1,2-Dichloroethane-d4 (Surr)
75
53- 150
05104120 10:23 1
4-Bromofluorobenzene (Surr)
78
54 - 125
05104120 10:23 1
Dibromofluoromethane (Surr)
82
55 - 150
05104120 10:23 1
Toluene-d8 (Surr)
84
63 - 127
05104120 10:23 1
Eurofins TestAmerica, Pittsburgh
Page 10 of 15 5/11/2020

QC Sample Results
Client: CH2M Hill, Inc.
Job ID: 180-105052-1
Project/Site: Poplar Tent Road
Method: EPA 8260B - Volatile Organic Compounds (GC/MS)
Lab Sample ID: MB 180-314487/5
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 314487
MB MB
Analyte
Result Qualifier
RL
MDL Unit
D Prepared
Analyzed Dil Fac
Ethylbenzene
ND
5.0
2.2 ug/L
05/04/20 09:56 1
Benzene
ND
5.0
2.0 ug/L
05/04/20 09:56 1
m,p-Xylene
ND
5.0
1.9 ug/L
05/04/20 09:56 1
Naphthalene
ND
5.0
3.9 ug/L
05/04/20 09:56 1
o-Xylene
ND
5.0
2.4 ug/L
05/04/20 09:56 1
Toluene
ND
5.0
1.7 ug/L
05/04/20 09:56 1
MB MB
F
Surrogate
%Recovery Qualifier
Limits
Prepared
Analyzed Dil Fac
1,2-Dichloroethane-d4 (Surr)
86
53- 150
05104120 09:56 1
ED
4-Bromofluorobenzene (Surr)
87
54 - 125
05104120 09:56 1
Dibromofluoromethane (Surr)
87
55 - 150
05104120 09:56 1
LToluene-d8 (Surr)
89
63 - 127
05104120 09:56 1
Lab Sample ID: LCS 180-314487/3
Client
Sample ID:
Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 314487
Spike
LCS
LCS
%Rec.
Analyte
Added
Result
Qualifier
Unit
D %Rec
Limits
Ethylbenzene
10.0
10.1
ug/L
101
73 -127
Benzene
10.0
9.69
ug/L
97
72 -118
m,p-Xylene
10.0
10.2
ug/L
102
73 -125
Naphthalene
10.0
14.6
ug/L
146
10 -150
o-Xylene
10.0
10.2
ug/L
102
72 -124
Toluene
10.0
9.63
ug/L
96
69 -125
LCS
LCS
Surrogate
%Recovery
Qualifier
Limits
1,2-Dichloroethane-d4 (Surr)
100
53 -150
4-Bromofluorobenzene (Surr)
99
54 -125
Dibromofluoromethane (Surr)
101
55 -150
Toluene-d8 (Surr)
97
63 - 127
Lab Sample ID: 180-105052-1 MS
Client
Sample ID: WSW-13
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 314487
Sample
Sample
Spike
MS
MS
%Rec.
Analyte
Result
Qualifier
Added
Result
Qualifier
Unit
D %Rec
Limits
Ethylbenzene
ND
10.0
11.1
ug/L
111
73 -127
Benzene
ND
10.0
10.9
ug/L
109
72 -118
m,p-Xylene
ND
10.0
10.7
ug/L
107
73-125
Naphthalene
ND
F1
10.0
13.7
ug/L
137
10-150
o-Xylene
ND
10.0
11.1
ug/L
ill
72 -124
Toluene
ND
10.0
10.5
ug/L
105
69 -125
MS
MS
Surrogate
%Recovery
Qualifier
Limits
1,2-Dichloroethane-d4 (Surr)
106
53- 150
4-Bromofluorobenzene (Surr)
104
54 - 125
Dibromofluoromethane (Surr)
110
55 - 150
Eurofins TestAmerica, Pittsburgh
Page 11 of 15 5/11/2020

QC Sample Results
Client: CH2M Hill, Inc.
Job ID: 180-105052-1
Project/Site: Poplar Tent Road
Method: EPA 8260B - Volatile Organic Compounds (GC/MS) (Continued)
Lab Sample ID: 180-105052-1 MS
Client Sample ID: WSW-13
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 314487
MS MS
Surrogate
%Recovery Qualifier
Limits
Toluene-d8 (Surr)
97
63 - 127
Lab Sample ID: 180-105052-1 MSD
Client Sample ID: WSW-13
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 314487
E
Sample Sample
Spike
MSD MSD
%Rec. RPD
Analyte
Result Qualifier
Added
Result Qualifier
Unit
D %Rec
Limits RPD Limit
Ethylbenzene
ND
10.0
10.5
ug/L
105
73 -127 6 20
Benzene
ND
10.0
10.0
ug/L
100
72 -118 8 20
m,p-Xylene
ND
10.0
10.2
ug/L
102
73-125 5 20 m
Naphthalene
ND F1
10.0
16.6 F1
ug/L
166
10-150 19 35
o-Xylene
ND
10.0
10.3
ug/L
103
72 -124 8 20
Toluene
ND
10.0
9.50
ug/L
95
69 -125 10 20
MSD MSD
Surrogate
%Recovery Qualifier
Limits
E:
1,2-Dichloroethane-d4 (Surr)
98
53- 150
4-Bromofluorobenzene (Surr)
89
54 - 125
Dibromofluoromethane (Surr)
91
55 - 150
Toluene-d8 (Surr)
86
63 - 127
Eurofins TestAmerica, Pittsburgh
Page 12 of 15 5/11/2020

QC Association Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 180-105052-1
GC/MS VOA
Analysis Batch: 314487
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method Prep Batch
180-105052-1
WSW-13
Total/NA
Water
EPA 8260B
180-105052-2
TB01-042220
Total/NA
Water
EPA 8260B
MB 180-314487/5
Method Blank
Total/NA
Water
EPA 8260B
LCS 180-314487/3
Lab Control Sample
Total/NA
Water
EPA 8260B
180-105052-1 MS
WSW-13
Total/NA
Water
EPA 8260B
180-105052-1 MSD
WSW-13
Total/NA
Water
EPA 8260B
Eurofins TestAmerica, Pittsburgh
Page 13 of 15 5/11/2020

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Page 14 of 15
5/11 /2020

Login Sample Receipt Checklist
Client: CH2M Hill, Inc.
Job Number: 180-105052-1
Login Number: 105052
List Number: 1
Creator: Watson, Debbie
Question
List Source: Eurofins TestAmerica, Pittsburgh
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey
N/A
meter.
The cooler's custody seal, if present, is intact.
True
Sample custody seals, if present, are intact.
True
The cooler or samples do not appear to have been compromised or
True
tampered with.
Samples were received on ice.
True
Cooler Temperature is acceptable.
True
Cooler Temperature is recorded.
True
COC is present.
True
COC is filled out in ink and legible.
True
COC is filled out with all pertinent information.
True
Is the Field Sampler's name present on COC?
True
There are no discrepancies between the containers received and the COC.
True
Samples are received within Holding Time (excluding tests with immediate
True
HTs)
Sample containers have legible labels.
True
Containers are not broken or leaking.
True
Sample collection date/times are provided.
True
Appropriate sample containers are used.
True
Sample bottles are completely filled.
True
Sample Preservation Verified.
True
There is sufficient vol. for all requested analyses, incl. any requested
True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is
True
<6mm (1/4").
Multiphasic samples are not present.
True
Samples do not require splitting or compositing.
True
Residual Chlorine Checked.
N/A
Eurofins TestAmerica, Pittsburgh
Page 15 of 15 5/11/2020

Beverly, Trudy
From: Skeean, Mike/CLT <[e-mail]>
Sent: Tuesday, June 9, 2020 11:07 AM
To: Beverly, Trudy
Subject: RE: [External] RE: Plantation's Poplar Tent Road Site - Meeting on May 20, 2020
111911NMOMernal email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
�[e-mail]
Ok, thank you!
Mike
From: Beverly, Trudy <[e-mail]>
Sent: Tuesday, June 9, 2020 11:04 AM
To: Skeean, Mike/CLT <[e-mail]>
Subject: RE: [External] RE: Plantation's Poplar Tent Road Site - Meeting on May 20, 2020
Hey Mike,
Yesterday was my first day back from leave and was crazy. I did receive the soil vapor results and the water supply well
sampling documents. Ron and I have discussed the site. Plantation has permission to move the remediation system to
another site under the condition that the remaining area of concern continues to be addressed. The annual report due
date has been extended until July 31, 2020.
Have a great day,
Trudy
Trudy Beverly, L.G.
Hydrogeologist, Division of Waste Management
North Carolina Department of Environmental Quality
UST Section, Mooresville Regional Office
+nr�
704.235.2182 (Office)
Trudy.Beverlykncdenn gov
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
Office Mailing Address:
610 East Center Avenue, Suite 301
Mooresville, NC 28115
Branch's Underground Storage Tanks Website Address: ht_pt s://deg.nc.gov/about/divisions/waste-management/ust
Branch's Above Ground Storage Tanks Website Address: https://deq.nc.gov/about/divisions/waste-management/ust/ast-program
INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES:
httns://dea.ne. gov/about/divisions/waste-management/waste-management-rules-data/waste-management-gis-mans
File Review Procedures:
htips://deq.nc. gov/about/divisions/waste-management/ust/file-review-procedures#mooresville-regional-office
ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche):
https: //deq.nc. gov/about/divisions/waste-management/laserfiche
Document Submittal & UST File Names for Laserfiche Policies:
httys:Hfiles.ne.izov/ncdea/Waste%2OManasement/DWM/UST/W hatsNew/Final-Electronic-Document-Submittal-Policy.pdf
https:Hfiles.nc.gov/ncdeq/Waste%20Management/D WM/UST/Corrective%2OAction/UST%20file%20names%20for%2OLaserfiche.docx
From: Skeean, Mike/CLT [mailto:[e-mail]
Sent: Tuesday, June 9, 2020 10:57 AM

To: Beverly, Trudy <[e-mail]>
Subject: [External] RE: Plantation's Poplar Tent Road Site - Meeting on May 20, 2020
External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
[e-mail]
Hi Trudy.
I hope all is well. I was just reviewing some emails and noticed that I hadn't heard back regarding your concurrence with
Plantation moving the remediation system off site and our request to submit the annual report by the end of July. I had
received an out of office message when I submitted the analytical results letters at the end of May, so you might still be
away from work. I look forward to hearing back from you on these items.
Thanks very much.
Mike
From: Skeean, Mike/CLT
Sent: Friday, May 22, 2020 10:20 AM
To: Beverly, Trudy <[e-mail]>
Cc: Jerry Aycock (Jerry Aycock@ kindermorgan.com) <Jerry Aycock@ kindermorgan.com>; Jessica Toll
(Jessica toll@ kindermorgan.com) <jessica toll@ kindermorgan.com>; [e-mail]; [e-mail]; Brian
Pace <[e-mail]>; [e-mail]; Debbie Nestora <[e-mail]>;
Pam [e-mail]; Corporate Environmental Group<[e-mail]>
Subject: Plantation's Poplar Tent Road Site - Meeting on May 20, 2020
Trudy,
Thank you for meeting with me on Wednesday to discuss the rebound monitoring results and proposed path forward at
Plantation's Poplar Tent Road Site.
The information we covered regarding rebound monitoring results will be presented in the next Annual Monitoring
Report. We typically submit the Annual Monitoring Report by the end of September; however, your recent letter dated
April 3, 2020, requested the report by May 31, 2020. As we discussed, we are requesting an extension to submit the
report by the end of July. An extension request is attached.
As discussed, the biosparging and soil vapor extraction system has worked extremely well to address the large-scale
impacts over the last four years but is no longer the right fit to address the remaining few areas of dissolved -phase
concentrations, namely near MW-3 and MW-10. Plantation has an opportunity to relocate this system to another one of
their critical sites in North Carolina where it would be more beneficial than at this site. As we discussed, Plantation
intends to continue to address the remaining areas of contamination using an alternate approach, as discussed below.
Would you please reply with your concurrence to remove the system from the site? The system conveyance piping and
electrical service will remain in place in case focused biosparging is determined to be the best alternative to address
remaining contaminant concentrations in the future.
Prior to the next semiannual monitoring event in October, we plan to prepare and submit an updated, proposed
monitoring plan to right -size the gauging and sampling efforts for the current conditions. The plan will likely present a
reduction in the number of wells to gauge and sample, the addition of natural attenuation parameters for select wells,
an update to the soil vapor monitoring program on Lots 6 and 7, an update to the surface water monitoring program,
and an update to the water supply well monitoring program on the adjacent (Duffey) property. Plantation will evaluate
the additional data collected over the course of approximately one year and will formulate a path forward that could
include longer -term monitored natural attenuation or a focused remedial approach for the MW-3 and/or MW-10 areas.

I appreciate your time and the candid discussion regarding our options as we take the next steps toward site closure. It
was good to see you during our virtual meeting! Hopefully we'll have a chance to catch up in person soon.
Thank you,
Mike
Mike Skeean, P.E. Jacobs fiacobs.coml I Senior Project Manager
0:+1.704.543.3285 M:+1.704.206.0869 I mike.skeean(cDoacobs.com
14120 Ballantyne Corporate Place, Suite 200 1 Charlotte, NC 28277 1 USA
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