MO_88110_88110_CA_O_20191111_Letter to Wilson Residents (Lot 6)

JACOBS
November 11, 2019
Delivered via Email ([e-mail])
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 Plantation Pipe Line Company's representatives (Jacobs) to conduct semiannual
soil vapor monitoring activities on your property in October 2019. 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.
October 2019 Monitoring Activities
On October 10, 2019, 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 October 17, 2019, 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, xylenes (BTEX), naphthalene, and 2-methyl naphthalene.
Analytical Results
The analytical data from the October 17, 2019 monitoring event are attached to this letter and are
summarized in Table 1. When reviewing the laboratory analytical report, please note the sample
identifications for your soil vapor monitoring points are SV-5R-101719, and SV-14R-101719. 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-101719. Data from historical monitoring events are shown in
Table 2.
The analytical results show that the samples collected in October 2019 were significantly lower than North
Carolina Department of Environmental Quality (NCDEQ) and United States Environmental Protection
Agency (USEPA) regulatory screening criteria, as shown in Table 1. The purpose of these soil gas criteria
is for "screening" site data to help identify areas, contaminants, and conditions that may require further
evaluation or attention.
Jacobs Engineering Group Inc.

Mr. and Mrs. Derek Wilson
November 11, 2019 JACOBS
Page 2 of 2
The results of the October 2019 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 April 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 SVE systems were turned off at the end of April 2019 for
rebound monitoring through April 2020.
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 USPS)
Brian Pace, Laureldale LLC (via email)
File —Jacobs
Attachments:
Table 1 — Soil Vapor Analytical Results (October 2019)
Table 2 — Historical Soil Vapor Analytical Results (October 2007 through October 2019)
Figure 1 — Biosparging/SVE System As -Built
Analytical Laboratory Report

Tables

Table 1
Soil Vapor Analytical Results (October 2019)
Poplar Tent Road
Plantation Pipe Line Company
Concord, Cabarrus County, North Carolina
C L19
= v
N
LCl
C
c
h
aD
c
%+ ti
Date Collected
G>
c 0
y
0
r
0
r
X O
G1 r
�' O
M
O
t M r
°' O
Sample ID
(MM/DD/YYYY)
m
�
>+
t
a
X
0
Q.
a
LU
Z
C
p /m3
SV-5 R-101719
10/17/2019
ND <2.6
N D <4.5
ND <3.5
ND <3.5
ND <3.5
ND <1.74
ND <2.64
SV-5RD-1017191
10/17/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
ND <1.74
ND <2.64
SV-14R-101719
10/17/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
ND <1.74
ND <2.64
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.
2February 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
3USEPA 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
4The method detection limit is presented for samples analyzed by TO-17 in October 2019.
< - Indicates value is less than the shown reporting limit
pg/m3 - micrograms per cubic meter
J - estimated value
ND - not detected
NS - no soil gas screening criteria available
AF - Attenuation Factor
TRL - Target Risk Level
THQ - Target Hazard Quotient
USEPA - United States Environmental Protection Agency
Bold text with gray highlighting indicates exceedance of one or more screening criteria

Table 2
Historical Soil Vapor Analytical Results (October 2007 through October 2019)
Poplar Tent Road Site
Plantation Pipe Line Company
Concord, Cabarrus County, North Carolina
Sample ID
Date Collected
(MM/DD/YYYY)
v
C ll1
O1 rl
C O
v
co
y
C ll1
y .y
3 O
o
~
v
I
N IA
c
O
r
{y
w
N Ill
x 0
c
£'
C Ill
5' O
x
v
L O
a ;,
m
Z
a
_
s O
a F
,
Z
v
T Ol
y r
? CL
N m
C
v
T Ol
y r O
? c F-
N m
C
^
O IA
a p
w
y
x
µg/ms
SV-05-100307
10/3/2007
ND < 2.4
0.6
J
ND < 2.4
0.6 1
ND < 2.4
ND < 2.4
NA
0.49 1
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 1
4.33
il
ND < 4.03
7.3 J
6.33 J
ND < 2.2
22.6 J
SV-5R-030413Z
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'Z
03/04/2013
ND < 0.22
0.25
J, B
0.021 J
0.054 1
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 1
0.085
J
0.085 J
ND < 2.5
ND < 0.77
ND < 2.5
NA
SV-5RD-0805131
8/5/2013
0.071 J
0.26
0.020 J
0.049 1
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-0227141
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.S
NA
ND < 2.5
NA
SV-5RD-0923141
09/23/2014
0.14 J
0.054
J
ND < 0.14
0.026 1
ND < 0.14
J
NA
ND < 2.5
NA
ND < 2.5
NA
SV-5R-04281S
04/28/2015
ND<0.16
ND<0.81
ND<0.81
ND<0.81
ND<0.81
NA
ND<2.S R
NA
ND<2.5 R
NA
SV-5RD-0428151
04/28/2015
0.2S
0.27
J
ND<0.78
ND<0.78
ND<0.78
NA
ND<2.S R
NA
ND<2.5 R
NA
SV-5R-10131S
10/13/2015
62 J
ND <360
150 J
440
160
J
NA
ND <2.5
NA
ND <2.5
NA
SV-5RD-1013151
10/13/2015
ND <68
ND <340
150 1
430
180
1
NA
ND <2.S
NA
ND <2.5
NA
SV5R-121015
12/10/2015
91
ND <86
480
2,400
2,100
NA
NA
NA
NA
NA
SV5RD-1210151
12/10/2015
120
ND <87
600
2,900
2,600
NA
NA
NA
NA
NA
SV-5R-022916
02/29/2016
5.1 1
ND <3.5
57 J
340 J
510
J
NA
3.1
NA
3.0
NA
SV-5RD-0229161
02/29/2016
12 1
4.2
J
140 1
820 1
1,200
1
NA
2.0 1
NA
2.1 J
NA
SV-5R-041116
04/11/2016
21
ND<42
320
1,700
1,600
NA
2.2 1
NA
ND<2.5
NA
SV-5RD-0411161
04/11/2016
21
ND < 38
310
1,700
1,600
NA
2.3 1
NA
ND < 2.5
NA
SV-5R-062716
06/27/2016
1.2
1.2
17
110
260
D
NA
1.1 1
NA
ND < 2.5
NA
SV-5RD-0627161
06/27/2016
0.90
0.57
J
16
110
250
D
NA
1.5 1
NA
0.77 J
NA
SV-5R-090716
09/07/2016
0.17 1
1.3
ND <0.89
ND <0.89
ND <0.89
NA
ND <2.5
NA
0.64 J
NA
SV-5RD-0907161
09/07/2016
ND <0.20
0.54
J
ND <1.0
ND <1.0
ND <1.0
NA
ND <2.5
NA
0.45 1
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-1018161
10/18/2016
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 1
97
130
NA
ND <2.5
NA
0.44 1
NA
SV-5RD-0418171
04/18/2017
ND <7.3
ND <36
13 1
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 1
14
27
NA
2.0 1
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-0417181
04/17/2018
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-1017181
10/17/2018
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-1019181
10/19/2018
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 1
NA
34 J
NA
SV-5RD-0424191
04/24/2019
ND <2.6
ND <4.5
ND <3.5
ND <3.5
ND <3.5
NA
260 1
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-0710191
07/10/2019
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-1017191
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-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 1
NA
ND < 7
SV-14
11/28/2007
ND < 1.8
1.4
J
0.53 J
1.5 1
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 Ji
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 1
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 .11
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 1
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-12101S
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
1 2.3 J1
NA
1 2.6
NA
SV-14R-041116
04/11/2016
ND <0.15
0.70
1
ND <0.73
ND <0.73
ND <0.73
NA
I ND <2.5
1 NA
ND <2.5
NA

Table 2
Historical Soil Vapor Analytical Results (October 2007 through October 2019)
Poplar Tent Road Site
Plantation Pipe Line Company
Concord, Cabarrus County, North Carolina
C 111
Ifl
N Ln
N
Date Collected
c 0
3 0
o
a 0
x 0
7' 0
x
L 0
a~
0
°' 0
r
d+ O
...
d 0
Sample ID
(MM/DD/YYYY)
a
`°
~
> r
r
a H
£'
r
°'
m
n v
m
a
e i C
2 a 2
e.i C
, r
W
Z
Z
C
C
X
µg/ms
SV-14R-062716
06/27/2016
0.15 J
0.31 1
ND <0.84
ND <0.84
ND <0.84
NA
ND <2.5
NA
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
ND <2.5
NA
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 1
NA
0.65 1
NA
SV-14R-041718
04/17/2018
ND <0.15
0.591
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
0.14J
0.86
ND<0.85
1.81
1.0
NA
ND<2.5
NA
ND<2.5
NA
SV-14RD-0503194
05/03/2018
0.23
3.6
0.40 J
1.51
0.55 J
I NA
ND <2.5
NA
ND <2.5
NA
SV-14R-101718
10/17/2018
0.191
0.161
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
l Gas Screening Criteria5
120
34800
374
695
695
20.9
20.9
NS
NS
695
l Gas Screening Criteria'
LO
120
35000
370
700
700
21
21
NS
NS
700
Notes:
'Duplicate sample collected from SV-5R
2 Sample analyzed at AILS Environmental
3aample analyzed at ASL/Eurofins Air Toxics
°Duplicate sample collected from SV-14R
5February 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://fiiles.nc.gov/ncdeq/Waste%2OManagement/DWM/SF/RiskBasedRemediation/Feb2O18_Res_VISLs.pdf
6USEPA Vapor Intrusion Screening Levels (VISL) Calculator (AF = 0.03). TRL = 10-5 or THQ = 0.2, accessed June 19, 2019. https://epa-visi.orni.gov/cgi-bin/visl_search
'The method detection limit is presented for samples analyzed by TO-17.
< - Indicates value is less than the shown reporting limit.
pg/m3 - micrograms per cubic meter
D - reported result is from a dilution
J - estimated value
R - data was rejected during validation
x - excluded. Preferred analytical method for 2-Methylnaphthalene is TO-17. See case narrative in laboratory report.
ND - not detected
NS - no soil gas screening criteria available
B - Analyte detected in both the sample and associated method blank
NA - not analyzed
AF - Attenuation Factor
TRL - Target Risk Level
THQ - Target Hazard Quotient
USEPA - United States Environmental Protection Agency
Id text with gray highlighting indicates exceedance of one or more screening criteria

Figure

WF TREED /_
1,000 GALLON
/ / // / // / / /
\
IOU 4%� 7I7ANSEORMER
f 4\��
STORAGE TANK
/MW-12
/
CONRETE PAD
I II /
MW-13
a BuO T
BIOSPARGING AND SVE
I II / II I SVE / BIOSPARGING
I
r s
EQUIPMENT BUILDING
I II a III CONVEYANCE LINES
I (HDD UTILITY BORE)
I II
HOUSE U
SVE/BIOSPARGING
CONVEYANCE LINES
I II
I I I
430' 1 TOTAL
I /
\
/ TRENCH
I Iq III III 21.5' j MAX. DEPTH
1 36'
CM11 --, Hrcc,ti
I I
I
• ..:�.. WALNUT
., TREE O
r---------
I I
II
�iiii
-1
-
---�
�,/ D
- - I
DRAIN
C-2UNDERGROUND,
�—
=_ _— —
'a
IOSPARGING I
MW-11D
I A
ONVEYANCE LINE
rc,
6" PLASTIC I
T+�\�\ \ \ \ _
C-1
RENCHI
/
UNDERGROUND I
DRAIN
OUTLET
\\ \ \
\\
PZ-14\� \ \\��ePZ
\\
I
GATE " • GRAVEL
EXISTING DPE TRENCH
_ ,
_ DRIVE I
`
`y_ 4
HBS-1-
\\\ SV-16A
\\ \ \\ -15
O_
-'��-------------- - 1 --- -------------
- --------
_ — — — — — ——Si�15B-
-
sv-15 _ 6T •
- — J� — —
- --- - \ -�F
-
_ _ 6
— �T31— -
----_-----------
----------
" ---------------
-----------
-----------�� �\
W 9_P
M -
R 11 .or
�
Mw_IO
LOCATION OF ° HBS2 ---- I R 1
r ,
/ — 1976 RELEASE _ RW-9 l 11 p 17
% F-F F MW-Fl —F _F —F i� - RW-1
- — — _
-------------------
,' MW-1T------------ P—Q---- _ - _ -
R
HORIZONTAL
I
HORIZONTAL
I
I
-
BIOSPARGING WELL
BIOSPARGING WELL
FORMER
DPE WELLS
298
RISER
304'
RISER
OPERATING AS SVE
\)
216'
SCREEN
(RW-7,RW-15,RW-16,
298'
SCREEN
RW-12, RW-13 AND
514'
TOTAL
602'
60'
TOTAL
DEPTH FROM
ENTRY POINT
14
60'
DEPTH FROM
ENTRY POINT
F
F F -F F F -F
LOT 6 1 .:>':; .. LOT
1+
SV-
/ \ NNW-B
1
It
sv
��
HORIZONTAL SOIL
VAPOR
EXTRACTION WELL
20' SIDE
18RISER
120' SCREEN
y
4/
\
136' TOTAL
/J •-�
/4/
T-13' DEPTH
>1\m
w M`ppLE 103
E 0t)
V PRE 6
SURVEY BY TAYLOR WISEMAN & TAYLOR
DRAINAGEWAY
SVE / BIOSPARGING
TRENCH (TO SVE
CONVEYANCE LINES
ACCESS
CLEAN OUTSNERTICAL.
VAULT
BIOSPARGING
\ WELLS)
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 \
DEEP V
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
— F -- F —
° — 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
PIEZOMETER
+SW--101
SURFACE WATER SAMPLING LOCATION
°❑
RECOVERY WELL
+ -
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
THE SVE SYSTEM
++++++++++++++++++++++++
SCREEN ED I NTERVAL
-+++++++++++++++++++++#+
= = = =
INSTALLATION VIA HDD
o�
0 30 60 120
APPROXIMATE SCALE IN FEET
Figure 1. Biosparging/SVE System As -Built
Poplor Tent Road Site
Plantation Pipe Line Company JACOBS®
Concord, North Carolina
KinderMorgan\358526PoplarTent\Reports\Groundwater Monitoring Reports\2018 Annual Report\Figures\CADD

Analytical Laboratory Report

JACOBS
Memorandum
14120 Ballantyne Corporate Place, Suite 200
Charlotte, North Carolina 28277
United States
T +1.704.544.4040
F +1.704.544.4041
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
November 4, 2019
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 on October 17, 2019.
Samples were submitted to Eurofins TestAmerica, Knoxville in Tennessee for the following analyses:
• T015 SIM Volatiles
• T017 Volatiles
These data for Sample Delivery Groups (SDGs) J17050 and J17112 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.
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.

JACOBS' Data Validation Summary- Plantation Pipe Line Poplar Tent Road Site Soil Vapor
[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.
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.

Data Validation Summary— Plantation Pipe Line Poplar Tent Road Site Soil Vapor JACOBS
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 VOC 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.
6. Conclusion
A review of the laboratory's analytical data submitted regarding the investigation of PPL Poplar Tent Road
soil vapor sampling event in October 2019 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
TestAmerica
ANALYTICAL REPORT
Eurofins TestAmerica, Knoxville
5815 Middlebrook Pike
Knoxville, TN 37921
Tel: [phone]
Laboratory Job ID: 140-17050-1
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.
1013012019 5:12:29 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: 140-17050-1
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 10/30/2019

Definitions/Glossary
Client: CH21VI Hill, Inc. Job ID: 140-17050-1
Project/Site: Poplar Tent Road
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
a 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)
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, Knoxville
Page 3 of 20 10/30/2019

Case Narrative
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-17050-1
Laboratory: Eurofins TestAmerica, Knoxville
Narrative
Job ID: 140-17050-1
0
Job Narrative
140-17050-1
Comments
No additional comments.
Receipt
The samples were received on 10/18/2019 10:00 AM; the samples arrived in good condition, properly preserved and, where required, on
ice.
Air - GC/MS VOA
Methods 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.
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 10/30/2019

Detection Summary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Client Sample ID: SV-12R-101719
ENo Detections.
Client Sample ID: SV-10R2-101719
INo Detections.
Client Sample ID: SV-14R-101719
LNo Detections.
Client Sample ID: SV-5R-101719
ENo Detections.
Client Sample ID: SV-5RD-101719
1 No Detections.
This Detection Summary does not include radiochemical test results.
F
Job ID: 140-17050-1
Lab Sample ID: 140-17050-1
Lab Sample ID: 140-17050-2
Lab Sample ID: 140-17050-3
Lab Sample ID: 140-17050-4
Lab Sample ID: 140-17050-5
Page 5 of 20
Eurofins TestAmerica, Knoxville
10/30/2019

Client Sample Results
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-17050-1
Client Sample ID: SV-12R-101719 Lab Sample ID: 140-17050-1
Date Collected: 10/17/19 11:44 Matrix: Air
Date Received: 10/18/19 10:00
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
10/21/19 23:26
1
u
10/21/19 23:26
1
10/21/19 23:26
1
10/21/19 23:26
1
10/21/19 23:26
1
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed
Dil Fac
Benzene
ND
2.6
0.26
ug/m3
10/21/19 23:26
1
Ethylbenzene
ND
3.5
0.56
ug/m3
10/21/19 23:26
1
Toluene
ND
4.5
2.9
ug/m3
10/21/19 23:26
1
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
10/21/19 23:26
1
o-Xylene
ND
3.5
0.65
ug/m3
10/21/19 23:26
1
Surrogate
%Recovery Qualifier
Limits
Prepared Analyzed
Dil Fac
4-Bromofluorobenzene (Surr)
96
60 - 140
10121119 23:26
1
Client Sample ID: SV-10R2-101719 Lab Sample ID: 140-17050-2
Date Collected: 10/17/19 14:51 Matrix: Air
Date Received: 10/18/19 10:00
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
Analyte
Benzene
Ethylbenzene
Toluene
m-Xylene & p-Xylene
o-Xylene
Surrogate
4-Bromofluorobenzene (Surr)
Analyzed Dil Fac
10/22/19 00:13 1
10/22/19 00:13 1
10/22/19 00:13 1
10/22/19 00:13 1
10/22/19 00:13 1
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed
Dil Fac
ND
2.6
0.26
ug/m3
10/22/19 00:13
1
ND
3.5
0.56
ug/m3
10/22/19 00:13
1
ND
4.5
2.9
ug/m3
10/22/19 00:13
1
ND
3.5
1.3
ug/m3
10/22/19 00:13
1
ND
3.5
0.65
ug/m3
10/22/19 00:13
1
%Recovery Qualifier
Limits
Prepared Analyzed
Dil Fac
95
60 - 140
10122119 00:13
1
Client Sample ID: SV-14R-101719 Lab Sample ID: 140-17050-3
Date Collected: 10/17/19 15:10 Matrix: Air
Date Received: 10/18/19 10:00
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
10/22/19 00:59
1
Ethylbenzene
ND
0.80
0.13
ppb v/v
10/22/19 00:59
1
Toluene
ND
1.2
0.78
ppb v/v
10/22/19 00:59
1
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
10/22/19 00:59
1
o-Xylene
ND
0.80
0.15
ppb v/v
10/22/19 00:59
1
Eurofins TestAmerica, Knoxville
Page 6 of 20 10/30/2019

Client Sample Results
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-17050-1
Client Sample ID: SV-14R-101719 Lab Sample ID: 140-17050-3
Date Collected: 10/17/19 15:10 Matrix: Air
Date Received: 10/18/19 10:00
Sample Container: Summa Canister 1 L
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed
Dil Fac
Benzene
ND
2.6
0.26
ug/m3
10/22/19 00:59
1
Ethylbenzene
ND
3.5
0.56
ug/m3
10/22/19 00:59
1
Toluene
ND
4.5
2.9
ug/m3
10/22/19 00:59
1
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
10/22/19 00:59
1
o-Xylene
ND
3.5
0.65
ug/m3
10/22/19 00:59
1
Surrogate
%Recovery Qualifier
Limits
Prepared Analyzed
Dil Fac
C
4-Bromofluorobenzene (Surr)
94
60 - 140
10122119 00:59
1
Client Sample ID: SV-5R-101719 Lab Sample ID: 140-17050-4
Date Collected: 10/17/19 15:59 Matrix: Air
Date Received: 10/18/19 10:00
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
10/22/19 01:47
1
10/22/19 01:47
1
10/22/19 01:47
1
10/22/19 01:47
1
10/22/19 01:47
1
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene
ND
2.6
0.26
ug/m3
10/22/19 01:47 1
Ethylbenzene
ND
3.5
0.56
ug/m3
10/22/19 01:47 1
Toluene
ND
4.5
2.9
ug/m3
10/22/19 01:47 1
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
10/22/19 01:47 1
o-Xylene
ND
3.5
0.65
ug/m3
10/22/19 01:47 1
Surrogate
%Recovery Qualifier
Limits
Prepared Analyzed Dil Fac
4-Bromofluorobenzene (Surr)
99
60 - 140
10122119 01:47 1
Client Sample ID: SV-5RD-101719
Lab Sample ID: 140-17050-5
Date Collected: 10/17/19 15:59
Matrix: Air
Date Received: 10/18/19 10:00
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
10/22/19 02:34
1
Ethylbenzene
ND
0.80
0.13
ppb v/v
10/22/19 02:34
1
Toluene
ND
1.2
0.78
ppb v/v
10/22/19 02:34
1
m-Xylene & p-Xylene
ND
0.80
0.29
ppb v/v
10/22/19 02:34
1
o-Xylene
ND
0.80
0.15
ppb v/v
10/22/19 02:34
1
Analyte
Result Qualifier
RL
MDL
Unit D Prepared
Analyzed
Dil Fac
Benzene
ND
2.6
0.26
ug/m3
10/22/19 02:34
1
Ethylbenzene
ND
3.5
0.56
ug/m3
10/22/19 02:34
1
Toluene
ND
4.5
2.9
ug/m3
10/22/19 02:34
1
m-Xylene & p-Xylene
ND
3.5
1.3
ug/m3
10/22/19 02:34
1
o-Xylene
ND
3.5
0.65
ug/m3
10/22/19 02:34
1
Eurofins TestAmerica, Knoxville
Page 7 of 20 10/30/2019

Client Sample Results
Client: CH21VI Hill, Inc. Job ID: 140-17050-1
Project/Site: Poplar Tent Road
Client Sample ID: SV-5RD-101719 Lab Sample ID: 140-17050-5
Date Collected: 10/17/19 15:59 Matrix: Air
Date Received: 10/18/19 10:00
Sample Container: Summa Canister 1 L
Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac
4-Bromofluorobenzene (Surr) 99 60 - 140 10122119 02:34 1
Eurofins TestAmerica, Knoxville
Page 8 of 20 10/30/2019

Default Detection Limits
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-17050-1
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 10/30/2019

Surrogate Summary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-17050-1
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Matrix: Air Prep TVDe: Total/NA
BFB
Lab Sample ID
Client Sample ID
(60-140)
140-17050-1
SV-12R-101719
96
140-17050-2
SV-10R2-101719
95
140-17050-3
SV-14R-101719
94
140-17050-4
SV-5R-101719
99
140-17050-5
SV-5RD-101719
99
LCS 140-34462/1002
Lab Control Sample
97
MB 140-34462/4
Method Blank
90
Surrogate Legend
BFB = 4-Bromofluorobenzene (Surr)
Percent Surrogate Recovery (Acceptance Limits)
0
Eurofins TestAmerica, Knoxville
Page 10 of 20 10/30/2019

QC Sample Results
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-17050-1
Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)
Lab Sample ID: MB 140-34462/4
Client Sample ID: Method Blank
Matrix: Air
Prep Type: Total/NA
Analysis Batch: 34462
MB MB
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Benzene
ND
0.080
0.0080
ppb v/v
10/21/19 11:26 1
Ethylbenzene
ND
0.080
0.013
ppb v/v
10/21/19 11:26 1
Toluene
ND
0.12
0.078
ppb v/v
10/21/19 11:26 1
m-Xylene & p-Xylene
ND
0.080
0.029
ppb v/v
10/21/19 11:26 1
o-Xylene
ND
0.080
0.015
ppb v/v
10/21/19 11:26 1
Analyte
Benzene
Ethylbenzene
Toluene
m-Xylene & p-Xylene
o-Xylene
MB MB
Result Qualifier
ND
ND
ND
ND
ND
MB MB
Surrogate %Recovery Qualifier
4-Bromofluorobenzene (Surr) 90
Lab Sample ID: LCS 140-34462/1002
Matrix: Air
Analysis Batch: 34462
Analyte
Benzene
Ethylbenzene
Toluene
m-Xylene & p-Xylene
o-Xylene
Analyte
Benzene
Ethylbenzene
Toluene
m-Xylene & p-Xylene
o-Xylene
RL
MDL
Unit
D Prepared Analyzed Dil Fac
0.26
0.026
ug/m3
10/21/19 11:26 1
0.35
0.056
ug/m3
10/21/19 11:26 1
0.45
0.29
ug/m3
10/21/19 11:26 1
0.35
0.13
ug/m3
10/21/19 11:26 1
0.35
0.065
ug/m3
10/21/19 11:26 1
Limits
Prepared Analyzed Dil Fac
60 - 140
10/21/19 11:26 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike
Added
1.00
1.00
1.00
2.00
1.00
Spike
Added
3.2
4.3
3.8
8.7
4.3
LCS LCS
Surrogate %Recovery Qualifier Limits
4-Bromofluorobenzene (Surr) 97 60 - 140
LCS
Result
LCS
Qualifier
Unit
D %Rec
%Rec.
Limits
0.831
ppb v/v
83
70 -130
0.865
ppb v/v
86
70 -130
0.895
ppb v/v
90
70 -130
1.71
ppb v/v
86
70 -130
0.887
ppb v/v
89
70 -130
LCS
LCS
%Rec.
Result
Qualifier
Unit
D %Rec
Limits
2.65
ug/m3
83
70 -130
3.76
ug/m3
86
70 -130
3.37
ug/m3
90
70 -130
7.44
ug/m3
86
70 -130
3.85
ug/m3
89
70 -130
Page 11 of 20
Eurofins TestAmerica, Knoxville
10/30/2019

QC Association Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-17050-1
Air - GUMS VOA
Analysis Batch: 34462
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method Prep Batch
140-17050-1
SV-12R-101719
Total/NA
Air
TO 15 LL
140-17050-2
SV-10R2-101719
Total/NA
Air
TO 15 LL
140-17050-3
SV-14R-101719
Total/NA
Air
TO 15 LL
140-17050-4
SV-5R-101719
Total/NA
Air
TO 15 LL
140-17050-5
SV-5RD-101719
Total/NA
Air
TO 15 LL
MB 140-34462/4
Method Blank
Total/NA
Air
TO 15 LL
LCS 140-34462/1002
Lab Control Sample
Total/NA
Air
TO 15 LL
Eurofins TestAmerica, Knoxville
Page 12 of 20 10/30/2019

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Client Sample ID: SV-12R-101719
Date Collected: 10/17/19 11:44
Date Received: 10/18/19 10:00
Job ID: 140-17050-1
Lab Sample ID: 140-17050-1
Matrix: Air
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 34462 10/21/19 23:26 S1K TAL KNX
Instrument ID: MR
Client Sample ID: SV-10R2-101719
Date Collected: 10/17/19 14:51
Date Received: 10/18/19 10:00
Batch Batch
Prep Type Type Method
Total/NA Analysis TO 15 LL
Instrument ID: MR
Client Sample ID: SV-14R-101719
Date Collected: 10/17/19 15:10
Date Received: 10/18/19 10:00
Batch Batch
Prep Type Type Method
Total/NA Analysis TO 15 LL
Instrument ID: MR
Client Sample ID: SV-5R-101719
Date Collected: 10/17/19 15:59
Date Received: 10/18/19 10:00
Lab Sample ID: 140-17050-2
Matrix: Air
Dil Initial Final Batch Prepared
Run Factor Amount A- --mount Number or Analyzed Analyst Lab
1 50 mL 500 mL 34462 10/22/19 00:13 S1 K TAL KNX
Lab Sample ID: 140-17050-3 m
Matrix: Air
Dil
Run Factor
Initial
Amount
Final
Amount
Batch
Number
Prepared
or Analyzed Analyst Lab
1
50 mL
500 ­mL
34462
10/22/19 00:59 S-1—K TAL KNX
L
Batch Batch
Prep Type Type Method Run
Total/NA Analysis TO 15 LL
Instrument ID: MR
Client Sample ID: SV-5RD-101719
Date Collected: 10/17/19 15:59
Date Received: 10/18/19 10:00
F Batch Batch
Prep Type Type Method Run
Total/NA Analysis TO 15 LL
Instrument ID: MR
Client Sample ID: Method Blank
Date Collected: N/A
Date Received: N/A
Lab Sample ID: 140-17050-4
Matrix: Air
FR-
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
1 50 mL 500 ­mL 34462 10/22/19 01:47 S1 K TAL KNX
Lab Sample ID: 140-17050-5
Matrix: Air
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
1 50 mL 500 mL 34462 10/22/19 02:34 S1 K TAL KNX
Lab Sample ID: MB 140-34462/4
Matrix: Air
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 34462 10/21/19 11:26 S 1 K TAL KNX
Instrument ID: MR
Eurofins TestAmerica, Knoxville
Page 13 of 20 10/30/2019

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-17050-1
Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-34462/1002
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 34462 10/21/19 09:50 S1K TAL KNX
Instrument ID: MR
Laboratory References:
TAL KNX = Eurofins TestAmerica, Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL [phone]
Eurofins TestAmerica, Knoxville
Page 14 of 20 10/30/2019

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
02-14-22
ANAB
Dept. of Energy
L2311.01
02-14-22
ANAB
ISO/IEC 17025
L2311
02-13-22
Arkansas DEQ
State
2423
06-16-20
California
State
2423
06-30-20
Colorado
State
TN00009
02-29-20
Connecticut
State
PH-0223
09-30-21
Florida
NELAP
E87177
06-30-20
Georgia (DW)
State
906
04-13-20
Hawaii
State
NA
04-13-20
Kansas
NELAP
E-10349
10-31-19
Kentucky (DW)
State
90101
12-31-19
Louisiana
NELAP
83979
06-30-20
Louisiana
NELAP
83979
06-30-20
Louisiana (DW)
State
LA019
12-31-19
Maryland
State
277
03-31-20
Michigan
State
9933
04-13-20
Nevada
State
TN00009
07-31-20
New Hampshire
NELAP
2999
01-17-20
New Hampshire
NELAP
299919
01-17-20
New Jersey
NELAP
TN001
06-30-20
New York
NELAP
10781
03-31-20
North Carolina (DW)
State
21705
07-31-20
North Carolina (WW/SW)
State
64
12-31-19
North Carolina (WW/SW)
State Program
64
12-31-19
Ohio VAP
State
CL0059
08-28-20
Oklahoma
State
9415
09-01-20
Oregon
NELAP
TN I O189
01-01-20
Pennsylvania
NELAP
68-00576
12-31-19
Tennessee
State
02014
04-13-20
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
01-19-20
West Virginia (DW)
State
9955C
12-31-19
West Virginia DEP
State
345
04-30-20
Wisconsin
State
998044300
08-31-20
Job ID: 140-17050-1
Eurofins TestAmerica, Knoxville
Page 15 of 20 10/30/2019

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: 140-17050-1
Laboratory
TAL KNX
L
Eurofins TestAmerica, Knoxville
Page 16 of 20 10/30/2019

Sample Summary
Client: CH21VI Hill, Inc.
Job ID: 140-17050-1
Project/Site: Poplar Tent Road
Lab Sample ID Client Sample ID
Matrix
Collected
Received
Asset ID
140-17050-1 SV-12R-101719
Air
10/17/19 11:44
10/18/19 10:00
Air Canister (I-Liter)#34002420
140-17050-2 SV-10R2-101719
Air
10/17/19 14:51
10/18/19 10:00
Air Canister (I-Liter)#11885
140-17050-3 SV-14R-101719
Air
10/17/19 15:10
10/18/19 10:00
Air Canister (I-Liter)#11540
140-17050-4 SV-5R-101719
Air
10/17/19 15:59
10/18/19 10:00
Air Canister (1-Liter) #11871
140-17050-5 SV-5RD-101719
Air
10/17/19 15:59
10/18/19 10:00
Air Canister (I-Liter)#11726
14
Eurofins TestAmerica, Knoxville
Page 17 of 20 10/30/2019

I
V
0
c
Y
N Y
E•• O
a N N
in cc M c8, M
co
63
0 N U
W
u O o X
Lu uCO Y� a u_
E
y
£
N41N
G
OU
Z
Q
U
m
z
E
a
C9
(6
U
uo.
`�
(uollues selou ul hpaeds sseeld) a0410
seo 114pOel
_
OAS) uolloealx3 aodeA lloS
C�
i
SUE) IIuSICY
gelS-goS
v
NWIN
AM JUslgwV/jlV aoopul
I adi( a�tlale
`
p�
(uolloas selou ul Ajpeds eseeld) J0410
K/96 Vd3
v,
9t,W0 W1SV
z-
i •�
09Z Vd3
�_
•--y /
0E Vd3
(�
WIS 9VO1
,
G
(lanai MO / paepuelS) 96/17 of
>
>
�
m
�❑
��-TNT
��
V
a
D
!n
d
O
a� a
ti c
°
f
CT
\✓
'v 'd
''a's
E
E
0
N
w w
U
Ma
f
y E x a
o
E-"
"1i1e3
A
c c�
s
vN
_LO
�U1'
E
`
c
N;=
cva
ya
T-
E o
l(i
`T
�T
N
(
°
Fes-
n
�)
wFvim+
�
m
O
`o_
`o_
F-
F
F
US
waas
N
y
o
j
E
c
c
a
•R
w
LL
c
s
M
l'/O
A
Fs
:.j1
'C a
't awl
11
U
V)SIR
v
s
E
V
c S
0
l
`n
a
otl
zzIN
..J
E
a
0
T
e
4b
-
E�+-
c
E
CL EL
c
'El]"
a
E
o
�%��
J
1
1
y S
c
ar
d
c
J
CL
O.
C
O
'�O
L
Q
O`
O_-
iL
G
CEO
t�
c
¢U
au
aina
ti
to:
)
Page 18 of 20
10/30/2019

-d
rn N
C4 '�
A
O
d
y
d
y
•�
ei is
Z
x
a�aWdI'm
r•
o
U
UU
d
d
U
d
cUA°
a
Ri
ZZ
U
�'
q
oO
a.
o
a
o
+•+
a y
q
o
�
a.
c�
a
Cd
°
o
a
O
d
o
ed
a
lw 'L� i.
•p 'O
14 H Z
.d r:
Z �
rai
z
L.
q
`{
4Oq^,
q
uUUU
U*ci
�UUU
U
iti
d
°oU
as
00o
�
O5
g000.O
ex
�UU
000
urn
v�U
0to000
U
❑�❑❑
r.
❑U❑�❑❑U❑❑❑❑❑❑v❑❑❑❑
❑
❑❑s❑❑❑
❑❑
z
e
z
r
ai
•�
d
b;
.�
aqi
�
�
�
•�
C,
^_
�
c•
'c�
o,
a'
�
chi
�'
n
U
u•
U
9,"
w^
q
w°
O
°0
U
aQi
O
ai
�.•
�'�'
t'
cv
cOd
c�
q o
O
+�v+
�„
a
'b
�
O
is
W
O
S1
N
N
°
U N
o
F.
.cd
y
t�/�
•�+
w
�.
N
Q,
p
N
W
`"
avi
y
^
?
0 00 ^-
3
p
° A O�
`r.
dO
N
N
° U
N
N
ti Qvi
CO
�+
N
CO
N
N
N
b bA
O
O.
N
CV
.M .,q.
�t U
vi
t\
00
O\
.-�
.-�
�-r
.-�
r-+
V1
.-�
�G H
.--� C�.
l�
•--i
00
.--i
Oi
.--i
N
W
M
Page 19 of 20
10/30/2019

Gauge ID:
Date:
G5
10/19/2019
TestAmerica Knoxville - Air Canister Initial Pressure Check
Analyst
Sample ID
Asset #
Cleaning
Job
Cert
Size
(L)
Pressure @
Receipt
(-in Hg or +psig)
Time
Comments
BKK
140-17050-A-1
34002420
16760
B
1
-4.5
11:35
BKK
140-17050-A-2
11885
16621
B
1
1 -1.3
11:36
BKK
140-17050-A-3
11540
16760
B
1
-4.8
11:37
BKK
140-17050-A-4
11871
16760
B
1
-6.0
11:38
BKK
140-17050-A-5
11726
16760
B
1
-5.5
11:39
❑ 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
101113MIl.UM
Page 20 of 20
MS038 r14, 6/19/15
10/30/2019

urofins �
Environment Testing
TestAmerica
ANALYTICAL REPORT C
Eurofins TestAmerica, Knoxville
5815 Middlebrook Pike
Knoxville, TN 37921
Tel: [phone]
Laboratory Job ID: 140-17112-1
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
't_ 0- �4c? r
Authorized for release by:
1012412019 2:51:19 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: 140-17112-1 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 .......................................
7
QC Sample Results ........................................
8
QC Association Summary ...................................
9
Lab Chronicle ............................................
10
Method Summary .........................................
12
Sample Summary .........................................
13
Chain of Custody ..........................................
14
Eurofins TestAmerica, Knoxville
Page 2 of 14 10/24/2019

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)
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: 140-17112-1
SDG: WO 1910445
Eurofins TestAmerica, Knoxville
Page 3 of 14 10/24/2019

Case Narrative
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-17112-1
Laboratory: Eurofins TestAmerica, Knoxville
Narrative
Job ID: 140-17112-1
SDG: WO 1910445
0
Job Narrative
140-17112-1
Comments
No additional comments.
Receipt
The samples were received on 10/18/2019 9:45 AM; the samples arrived in good condition, properly preserved and, where required, on
ice.
T017
A sampling volume of 0.250 L was used to convert ng to ug/m3 for the associated Lab BLank.
No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.
Eurofins TestAmerica, Knoxville
Page 4 of 14 10/24/2019

Detection Summary
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Client Sample ID: SV-12R-101719
ENo Detections.
Client Sample ID: SV-14R-101719
INo Detections.
Client Sample ID: SV-10R2-101719
LNo Detections.
Job ID: 140-17112-1
SDG: WO 1910445
Lab Sample ID: 140-17112-1
Lab Sample ID: 140-17112-2
Lab Sample ID: 140-17112-3
Client Sample ID: SV-5R-101719 Lab Sample ID: 140-17112-4
ENo Detections.
Client Sample ID: SV-5RD-101719 Lab Sample ID: 140-17112-5 F
ENo Detections.
F
This Detection Summary does not include radiochemical test results.
Eurofins TestAmerica, Knoxville
Page 5 of 14 10/24/2019

Client Sample Results
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Client Sample ID: SV-12R-101719
Date Collected: 10/17/19 11:59
Date Received: 10/18/19 09:45
Job ID: 140-17112-1
SDG: WO 1910445
Lab Sample ID: 140-17112-1
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
2-METHYLNAPHTHALENE ND U 20 2.6 UG/M3 10/18/1912:45 10/18/1912:45 1.00
NAPHTHALENE ND U 20 1.7 UG/M3 10/18/1912:45 10/18/1912:45 1.00
Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac
NAPHTHALENE-D8 91 50 - 150 10118119 12:45 10118119 12:45 1.00
Client Sample ID: SV-14R-101719
Date Collected: 10/17/19 13:02
Date Received: 10/18/19 09:45
Lab Sample ID: 140-17112-2
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte
Result
Qualifier
RL
MDL Unit D Prepared
Analyzed
Dil Fac
2-METHYLNAPHTHALENE
ND
U
20
2.6 UG/M3 10/18/1914:33
10/18/1914:33
1.00
NAPHTHALENE
ND
U
20
1.7 UG/M3 10/18/1914:33
10/18/1914:33
1.00
Surrogate
%Recovery
Qualifier
Limits
Prepared
Analyzed
Dil Fac
NAPHTHALENE-D8
80
50 - 150
10118119 14:33
10118119 14:33
1.00
Client Sample ID: SV-10R2-101719
Date Collected: 10/17/19 15:24
Date Received: 10/18/19 09:45
Lab Sample ID: 140-17112-3
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
2-METHYLNAPHTHALENE ND U 20 2.6 UG/M3 10/18/1913:51 10/18/1913:51 1.00
NAPHTHALENE ND U 20 1.7 UG/M3 10/18/1913:51 10/18/1913:51 1.00
Surrogate %Recovery Qualifier Limits Prepared Analyzed DY Fac
NAPHTHALENE-D8 84 50 - 150 10118119 13:51 10118119 13:51 1.00
Client Sample ID: SV-5R-101719
Date Collected: 10/17/19 16:09
Date Received: 10/18/19 09:45
Lab Sample ID: 140-17112-4
Matrix: Air
Method: TO17 - General Subcontract Method
Analyte Result Qualifier
RL
MDL Unit D Prepared
Analyzed
Dil Fac
2-METHYLNAPHTHALENE ND U
20
2.6 UG/M3 10/18/1915:15
10/18/1915:15
1.00
NAPHTHALENE ND U
20
1.7 UG/M3 10/18/1915:15
10/18/1915:15
1.00
Surrogate %Recovery Qualifier
Limits
Prepared
Analyzed
Dil Fac
NAPHTHALENE-D8 78
50 - 150
10118119 15:15
10118119 15:15
1.00
Client Sample ID: SV-5RD-101719
Date Collected: 10/17/19 16:18
Date Received: 10/18/19 09:45
Method: TO17 - General Subcontract Method
Analyte Result Qualifier
2-METHYLNAPHTHALENE ND U
NAPHTHALENE ND U
Surrogate
NAPHTHALENE-D8
RL MDL Unit
20 2.6 UG/M3
20 1.7 UG/M3
%Recovery Qualifier Limits
87 50-150
Lab Sample ID: 140-17112-5
Matrix: Air
D Prepared Analyzed Dil Fac
10/18/19 15:57 10/18/19 15:57 1.00
10/18/19 15:57 10/18/19 15:57 1.00
Prepared Analyzed Dil Fac
10118119 15:57 10118119 15:57 1.00
Eurofins TestAmerica, Knoxville
Page 6 of 14 10/24/2019

Surrogate Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Method: T017 - General Subcontract Method
Matrix: Air
ATHALEN
Lab Sample ID Client Sample ID (50-150)
Job ID: 140-17112-1
SDG: WO 1910445
Prep Type: Total/NA
Percent Surrogate Recovery (Acceptance Limits)
140-17112-1 SV-12R-101719
91
140-17112-2 SV-14R-101719
80
140-17112-3 SV-10R2-101719
84
140-17112-4 SV-5R-101719
78
140-17112-5 SV-5RD-101719
87
Surrogate Legend
C
NAPHTHALENE-D8 = NAPHTHALENE-D8
Method: T017 - General Subcontract Method
Matrix: AIR
Prep Type: Total/NA
Percent Surrogate Recovery (Acceptance Limits)
ATHALEN
Lab Sample ID Client Sample ID
(50-150)
1910445-06A Method Blank
90
1910445-08A Lab Control Sample
90
1910445-08AA Lab Control Sample Dup
92
Surrogate Legend
NAPHTHALENE-D8 = NAPHTHALENE-D8
Eurofins TestAmerica, Knoxville
Page 7 of 14 10/24/2019

QC Sample Results
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Method: T017 - General Subcontract Method
Lab Sample ID: 1910445-06A
Matrix: AIR
Analysis Batch: 11101801
Blank Blank
Analyte Result Qualifier RL MDL Unit
2-METHYLNAPHTHALENE ND U 20 UG/M3
NAPHTHALENE ND U 20 UG/M3
Blank Blank
Job ID: 140-17112-1
SDG: WO 1910445
Client Sample ID: Method Blank
Prep Type: Total/NA
Prep Batch: 11101801_P
D Prepared Analyzed Dil Fac
10/18/19 11:29 10/18/19 11:29 1.00
10/18/19 11:29 10/18/19 11:29 1.00
Surrogate
%Recovery Qualifier Limits
Prepared Analyzed Dil Fac
NAPHTHALENE-D8
90 50 - 150
10118119 11:29 10118119 11:29 1.06
Lab Sample ID: 1910445-08A
Client Sample ID: Lab Control Sample
C
Matrix: AIR
Prep Type: Total/NA
Analysis Batch: 11101801
Prep Batch: 11101801_P
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier
Unit D %Rec Limits
2-METHYLNAPHTHALENE
100
95
UG/M3 95 70-130
NAPHTHALENE
100
93
UG/M3 93 70-130
LCS LCS
Surrogate
%Recovery Qualifier
NAPHTHALENE-D8
90
Lab Sample ID: 1910445-08AA
Matrix: AIR
Analysis Batch: 11101801
Analyte
2-METHYLNAPHTHALENE
NAPHTHALENE
LCS Dup LCS Dup
Surrogate
%Recovery Qualifier
NAPHTHALENE-D8
92
Limits
50-150
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Prep Batch: 11101801 P
Spike
LCS Dup
LCS Dup %Rec. RPD
Added
Result
Qualifier Unit D %Rec Limits RPD Limit
100
94
UG/M3 94 70-130 1.0 25
100
92
UG/M3 92 70-130 1.1 25
Limits
50-150
Eurofins TestAmerica, Knoxville
Page 8 of 14 10/24/2019

QC Association Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Subcontract
Analysis Batch: 11101801
Lab Sample ID
Client Sample ID
140-17112-1
SV-12R-101719
140-17112-2
SV-14R-101719
140-17112-3
SV-10R2-101719
140-17112-4
SV-5R-101719
140-17112-5
SV-5RD-101719
1910445-06A
Method Blank
1910445-08A
Lab Control Sample
1910445-08AA
Lab Control Sample Dup
Prep Batch: 11101801_P
Lab Sample ID
Client Sample ID
140-17112-1
SV-12R-101719
140-17112-2
SV-14R-101719
140-17112-3
SV-10R2-101719
140-17112-4
SV-5R-101719
140-17112-5
SV-5RD-101719
1910445-06A
Method Blank
1910445-08A
Lab Control Sample
1910445-08AA
Lab Control Sample Dup
F
Job ID: 140-17112-1
SDG: WO 1910445
Prep Type
Matrix
Method
Prep Batch
Total/NA
Air
T017
11101801—P
Total/NA
Air
T017
11101801 P
Total/NA
Air
T017
11101801 P
Total/NA
Air
T017
11101801 P
Total/NA
Air
T017
11101801 P
Total/NA
AIR
T017
11101801 P
Total/NA
AIR
T017
11101801_P
Total/NA
AIR
T017
11101801_P
Prep Type
Matrix
Method
Prep Batch
Total/NA
Air
NONE
Total/NA
Air
NONE
Total/NA
Air
NONE
Total/NA
Air
NONE
Total/NA
Air
NONE
Total/NA
AIR
NONE
Total/NA
AIR
NONE
Total/NA
AIR
NONE
Eurofins TestAmerica, Knoxville
Page 9 of 14 10/24/2019

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-17112-1
SDG: WO 1910445
Client Sample ID: SV-12R-101719 Lab Sample ID: 140-17112-1
Date Collected: 10/17/19 11:59 Matrix: Air
Date Received: 10/18/19 09:45
Batch
Batch
Prep Type Type
Method Run
Total/NA Prep
NONE
Total/NA Analysis
T017
Instrument ID:
Client Sample ID: SV-14R-101719
Date Collected: 10/17/19 13:02
Date Received: 10/18/19 09:45
Batch Batch
Prep Type Type Method Run
Total/NA Prep NONE
Total/NA Analysis T017
Instrument ID:
Client Sample ID: SV-10R2-101719
Date Collected: 10/17/19 15:24
Date Received: 10/18/19 09:45
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
1 11101801 10/18/1912:45 Eurofins
_P
1.00 11101801 10/18/1912:45 SU Eurofins
Ldu Jdfitple ILJ: I'FU- I / I IL-L
Matrix: Air
Dil Initial
Final Batch
Prepared
F
Factor Amount
Amount Number
or Analyzed Analyst
Lab M
1
11101801
10/18/1914:33
Eurofins
_P
1.00
11101801
10/18/1914:33 SU
Eurofins
Lab Sample ID: 140-17112-3
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
11101801
10/18/1913:51
Eurofins
_P
Total/NA Analysis T017
1.00
11101801
10/18/1913:51
SU
Eurofins
Instrument ID:
Client Sample ID: SV-5R-101719
Lab Sample
ID: 140-17112-4
Date Collected: 10/17/19 16:09
Matrix: Air
Date Received: 10/18/19 09:45
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
11101801
10/18/1915:15
Eurofins
_P
Total/NA Analysis T017
1.00
11101801
10/18/1915:15
SU
Eurofins
Instrument ID:
Client Sample ID: SV-5RD-101719 Lab Sample ID: 140-17112-5
Date Collected: 10/17/19 16:18 Matrix: Air
Date Received: 10/18/19 09:45
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 11101801 10/18/1915:57 Eurofins
_P
Total/NA Analysis T017 1.00 11101801 10/18/1915:57 SU Eurofins
Instrument ID:
Page 10 of 14
Eurofins TestAmerica, Knoxville
10/24/2019

Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-17112-1
SDG: WO 1910445
Client Sample ID: Method Blank Lab Sample ID: 1910445-06A
Date Collected: N/A Matrix: AIR
Date Received: N/A
Batch
Batch
Prep Type Type
Method Run
Total/NA Prep
NONE
Total/NA Analysis
T017
Instrument ID:
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
1 11101801 10/18/1911:29 Eurofins
_P
1.00 11101801 10/18/1911:29 SU Eurofins
Client Sample ID: Lab Control Sample
Date Collected: N/A
Date Received: N/A
Batch Batch Dil Initial
Prep Type Type Method Run Factor Amount
Total/NA Prep NONE 1
Total/NA Analysis T017 1.00
Instrument ID:
Client Sample ID: Lab Control Sample Dup
Date Collected: N/A
Date Received: N/A
L-dri adrnpiu iu: iy iuwfa-uom
Matrix: AIR
Final Batch Prepared F
Amount Number or Analyzed Analyst Lab M
11101801 10/18/19 09:23 Eurofins
_P
11101801 10/18/19 09:23 SU Eurofins
Lab Sample ID: 1910445-08AA
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
11101801
10/18/1910:05 Eurofins
_P
Total/NA Analysis T017
1.00
11101801
10/18/1910:05 SU Eurofins
Instrument ID:
Laboratory References:
Eurofins = Eurofins Air Toxics, 180 Blue Ravine Road,
Suite B, Folsom, CA 95630
Page 11 of 14
Eurofins TestAmerica, Knoxville
10/24/2019

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: 140-17112-1
SDG: WO 1910445
Laboratory
Eurofins
L
Eurofins TestAmerica, Knoxville
Page 12 of 14 10/24/2019

Sample Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-17112-1
SDG: WO 1910445
Lab Sample ID
Client Sample ID
Matrix
Collected
Received Asset ID
140-17112-1
SV-12R-101719
Air
10/17/19 11:59
10/18/19 09:45
140-17112-2
SV-14R-101719
Air
10/17/19 13:02
10/18/19 09:45
140-17112-3
SV-10R2-101719
Air
10/17/19 15:24
10/18/19 09:45
140-17112-4
SV-5R-101719
Air
10/17/19 16:09
10/18/19 09:45
140-17112-5
SV-5RD-101719
Air
10/17/19 16:18
10/18/19 09:45
Eurofins TestAmerica, Knoxville
Page 13 of 14 10/24/2019

CD
M
CD
cr
cr
0-
<
C
1
i
(D
a
^�gsN
fY
1
F
:
CD
m
--41 CD
-�
p
�
(D€(D(D
7J
(
17
Q
Q
Q
N
�
p*1
�
b]
Q
�n
_0
c
m
c�
m
CD
m
m
(D
3
m
3
(D
3'CD
the
(:t
CD
Ed°i
F�
CD
Vi
CL
d,
:
_
s
D
0
0
0
0
O
`0
p
0
a m
ncp
O
[D N
o
>
S
((DD
6
N
D
T
In
—
C
I
0
r
m
CL
cmamv a
+t
0
♦ I
O
m
z
o
X
3
f7C]NOgS7il:
ro m-o T-
e„
=r 0- - -i
cu
CD � W
n
�� 3 c 0
N
o
u mao�m
�c m m2L0 W
-6 8 0
-
m m n Z
�
§
cc p
y
ro
0
ID
' J_j B� p Q O p 0m�'o a
tD' IDm
Z
o
4*:
OmW'< a.
"—" 3
3
O
m Q2.4Q
ep
oR m� m
CD
M,!±
5
0,cn
-�
`A00 W
ID m —fQ
..
....
O
CL
\
c
7p �
sm :3n
CD CL m
c° a
n
m
c
C
-
� © m
©gin
s
s
Q❑❑ �'�''
o p C
-�
Z --
N'
(o.o'
I" n m
(D
O
—
a
❑
❑
❑
❑
❑
❑
❑
❑
❑
❑
I Indoor Air
ca c
a CO cn
C
i =1
❑
❑
❑
❑
L
❑
❑
G
❑
I ❑
I outdoor Air
F
C-
Soil Vapor - t
©o®o©ram®a®a
Page 4 of
O m
o 03