HomeMy WebLinkAboutMO-88110_88110_CA_O_20190814_Soil Vapor Letter to Wilson Residents (Lot 6)JACOBS
August 14, 2019
Delivered via Email (wilsodg@gmail.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 Plantation Pipe Line Company's representatives (Jacobs) to conduct confirmation
soil vapor monitoring activities on your property in July 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.
July 2019 Monitoring Activities
On July 3, 2019, Jacobs sent you an email requesting access to your property to collect samples from soil
vapor monitoring point SV-5R (see attached figure). On July 10, 2019, a leak check was conducted on
soil vapor monitoring point SV-5R prior to collecting a vapor sample. The soil vapor monitoring point
passed the leak check and was purged with an electric sampling pump prior to sample collection. Soil
vapor samples were then collected using sampling syringes with charcoal tubes. The samples were
submitted to Eurofins TestAmerica in Knoxville, Tennessee for analysis of naphthalene and 2-
m ethyl naphthalene.
Analytical Results
The analytical data from the July 10, 2019 monitoring event are attached to this letter and are
summarized in Table 1. When reviewing the laboratory analytical report, please note the sample
identification for your soil vapor monitoring point is SV-5R-071019. A duplicate sample was 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-071019. Data from historical monitoring events are shown in Table 2.
The results show that naphthalene and 2-methyl naphthalene were not detected at or above their
respective laboratory reporting or method detection limits in the samples collected from SV-5R.
Jacobs Engineering Group Inc.
Mr. and Mrs. Derek Wilson
August 14, 2019 JACOBS
Page 2 of 2
Factors Influencing the Analytical Results
In general, soil vapor monitoring results are expected to vary over time 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 operating the remediation system, and variations in the contaminant source
concentrations.
An evaluation of precipitation data, vacuum monitoring data, and analytical data to date generally shows
that during and following precipitation events positive pressure and elevated concentrations are observed
in SV-5R; during drier periods, vacuum influence and relatively lower chemical concentrations are
observed. This trend suggests that the soil vapor extraction (SVE) system was positively influencing SV-
5R and the surrounding area during periods of drier weather; however, during periods of increased
precipitation, positive pressure is noted, along with elevated concentrations.
Soil Vapor Monitoring Plan
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. The next semiannual monitoring event is currently planned for
October 2019. A Jacobs representative will contact you separately to coordinate this monitoring event.
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.
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 (July 2019)
Table 2 — Historical Soil Vapor Analytical Results (October 2007 through July 2019)
Figure 1 — Biosparging/SVE System As -Built
Analytical Laboratory Report
Tables
Table 1
Soil Vapor Analytical Results (July 2019)
Poplar Tent Road
Plantation Pipe Line Company
Concord, Cabarrus County, North Carolina
C L19
= v
N
LCl
C
c
h
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 ..
C
Q.
a
W
E
f0
Z
N M
C
p /m3
SV-5R-071019
04/24/2019
NA
NA
NA
NA
NA
ND <1.7
ND <2.6
SV-5RD-0710191
04/24/2019
NA
NA
NA
NA
NA
ND <1.7
ND <2.6
Soil Gas Screening
120
34,800
374
695
695
20.9
NS
LCriteria
Soil Gas Screening Criteria3
120
1 34,800
374
1 695
695
21
NS _j
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 July 2019.
< - Indicates value is less than the shown reporting limit
pg/m3 - micrograms per cubic meter
J - estimated value
NA - not analyzed
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 July 2019)
Poplar Tent Road Site
Plantation Pipe Line Company
Concord, Cabarrus County, North Carolina
Sample ID
Collected
0CU0I A'1rl
6
y ,
~
2 6
o f
a
c
NI
6
y t,
y�
v
�
6
a
-5 6
�
c
a
o
�.
a
Z
v
O
!
m
Z
�'C
N cwa
-(MM/DD/YYYY)
C
ca
iZ
o
C
C
M
L
n1
... N
Ov
6Date
'
X
µg/ms
SV-05-100307
10/3/2007
ND < 2.4
0.6
1
ND < 2.4
0.6 J
ND < 2.4
ND < 2.4
NA
0.49 J
NA
3.0 1
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
1
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
1
ND < 3.33
18.3 J
4.33
J1
ND < 4.03
7.3 1
6.33 J
ND < 2.2
22.6 1
SV-5R-0304132
03/04/2013
ND < 0.23
0.14
1, B
ND < 0.30
ND < 0.30
0.016
1
ND < 0.30
ND < 2.50
ND < 1.50
ND < 2.50
NA
SV-5RD-0304131"
03/04/2013
ND < 0.22
0.25
1, B
0.021 1
0.054 J
0.024
1
ND < 0.29
ND < 2.50
ND < 1.40
ND < 2.50
NA
SV-5R-0304133
03/04/2013
ND < 1.66
1.20
1
ND < 2.26
0.663 1
ND < 2.26
ND < 2.73
ND < 2.40
ND < 6.03
ND < 2.40
ND < 6.80
SV-5RD-0304131"
03/04/2013
ND<1.76
0.556
1
ND<2.39
ND<4.77
ND<2.39
ND<2.89
ND<2.40
ND<6.39
1.0 1
ND<7.20
SV-5R-080S13
8/5/2013
0.071 1
0.30
0.029 1
0.11 J
0.085
1
0.085 J
ND < 2.5
ND < 0.77
ND < 2.5
NA
SV-5RD-080513'
8/5/2013
0.071 1
0.26
0.020 1
0.049 J
0.03
1
0.039 1
ND < 2.5
ND < 0.82
ND < 2.5
NA
SV-5R-022714
02/27/2014
0.091 1
0.28
0.048 1
0.19
0.087
1
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 1
0.18
0.082
1
0.049 1
ND < 2.5
ND < 0.16 X
ND < 2.5
NA
SV-5R-092314
09/23/2014
0.039 1
0.11
1
ND < 0.15
0.035 J
0.015
1
NA
ND < 2.5
NA
ND < 2.5
NA
SV-5RD-092314'
09/23/2014
0.14 1
0.054
1
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
1
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 1
440
160
1
NA
ND <2.5
NA
ND <2.5
NA
SV-5RD-101315'
10/13/2015
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-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 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
1
140 J
820 1
1,200
1
NA
2.0 J
NA
2.1 1
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
1
16
110
250
D
NA
1.5 1
NA
0.77 1
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'
09/07/2016
ND <0.20
0.54
1
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
1
ND <0.76
ND <0.76
ND <0.76
NA
ND <2.5
NA
ND <2.5
NA
SV-5RD-101816'
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.S
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'
04/18/2017
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 1
NA
SV-5RD-100917
10/09/2017
ND <0.75
ND <3.8
1.9 1
14
27
NA
1.6 1
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'
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-101718'
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
S.6 J
ND <39
ND <83
5.91
NA
NA
NA
NA
NA
SV-5RD-101918'
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 J
NA
34 1
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 1
NA
SV-5R-071019
07/10/2019
NA
NA
NA
NA
NA
NA
ND <1.7
NA
ND <2.6
NA
SV-5RD-071019'
07/10/2019
NA
NA
NA
NA
NA
NA
ND <1.7
NA
ND <2.6
NA
SV-14-100307
10/3/2007
ND<2.3
0.3
1
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
1
0.53 1
1.S J
0.56
1
ND < 1.8
NA
ND < 1.8
NA
2.06 1
SV-14R-111612
11/16/2012
ND<0.89
ND<1.05
1.50 1
4.15 1
ND<1.21
ND<1.47
4.6
ND<1.63
ND<1.7
5.30 J
SV-14R-030413Z
03/04/2013
ND < 0.21
0.27
1, B
0.016 1
0.059 J
0.046
1
0.12 J
ND < 2.50
ND < 1.40
ND < 2.50
NA
SV-14R-0304133
03/04/2013
0.679 1
0.521
1
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 1
0.40
0.054 1
0.23
0.18
1
0.13 J
ND < 2.5
0.98
ND < 2.5
NA
SV-14R-022714
2/27/2014
0.084 1
0.24
0.042 1
0.13 J
0.18
1
0.035 J
ND < 2.5
0.15 X
ND < 2.5
NA
SV-14R-092314
09/23/2014
0.024 1
0.073
1
ND < 0.14
0.034 J
0.013
1
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
1
ND <0.65
ND <0.65
ND <0.65
NA
2.3 1
NA
2.6
NA
SV-14R-041116
04/11/2016
ND <0.15
0.70
1
1ND <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
1
ND <0.84
ND <0.84
ND <0.84
INA
I 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
ND <2.5
NA
Table 2
Historical Soil Vapor Analytical Results (October 2007 through July 2019)
Poplar Tent Road Site
Plantation Pipe Line Company
Concord, Cabarrus County, North Carolina
=
m
a
w
d
d
�
C v1
Ill
N n
C
v V1
C 9ul
N
c
c
n
, c
L V1
f6
, c
L n
c
M
ate+ N
Date Collected
w rl
c 0
y rl
2 0
'i
a 0
j, rl
X D
ei
0
iy
s 0
!y
► 0
'y
v L 0
'y
v L 0
... ei
y 0
Sample ID
a
o v
> r
a
x
a~
a r
2 Q r
Q r
w
(MM/DD/YYYY)
m
~
c
6
m
N m
N m3.
�y
Z
Z
C
C
X
ire/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
0.591
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
0.14 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
0.401
1.5 J
0.551
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
2.31
NA
SV-14R-042419
04/24/2019
ND <2.6
ND <4.5
IND <3.5
IND <3.5
ND <3.5
NA
ND <9.47 1
NA
ND <4.27 1
NA
Soil Gas Screening Criteria
120
34800
374
695
695
20.9
20.9
NS
NS
695
Soil Gas Screening Criteria
120
35000
370
700
700
21
21
NS
NS
700
Notes:
Duplicate sample collected from SV-5R
2 Sample analyzed at ALS Environmental
3Sample 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://files.nc.gov/ncdeq/ Waste%20Management/DWM/SF/RiskBasedRemediation/Feb2018_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-visl.orni.gov/cgi-bin/visl_search
'The method detection limit is presented for samples analyzed by TO-17 in July 2019.
< - 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
Bold text with gray highlighting indicates exceedance of one or more screening criteria _
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CURB INLET
CONCRETE CURB
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- — —
- PROPERTY LINE
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— —
— SANITARY SEWER
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-------
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
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(qMW-8
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SURFACE WATER SAMPLING LOCATION
°❑
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+ -
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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
Project Name
Plantation Pipe Line Poplar Tent Road Site
Attention
Kelly Ramsey/CLT, Jacobs
Mike Skeean/CLT, Jacobs
From
Tiffany Davis/GNV, Jacobs
Date
July 30, 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. The samples were
collected in July 2019.
Samples were submitted to Eurofins Test America Knoxville, Tennessee for the following analyses:
• T017 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). 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.
[R]: Rejected. The data are not useable.
[X]: Excluded. Data were not used due to another value being more appropriate.
JACOBS" Data Validation Summary- Plantation Pipe Line Poplar Tent Road Site
I 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 — 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 T017 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. All field duplicate precision criteria were met.
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 Analytical Blanks
No target analytes were detected in the blanks.
Data Validation Summary— Plantation Pipe Line Poplar Tent Road Site JACOBS
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 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 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 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 soil vapor
sampling event in July 2019 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.
urofins U
Environment Testing
TestAmerica
ANALYTICAL REPORT L
Eurofins TestAmerica, Knoxville
5815 Middlebrook Pike
Knoxville, TN 37921
Tel: (865)291-3000 F
Laboratory Job ID: 140-16144-1 F
Laboratory Sample Delivery Group: WO 1907235
Client Project/Site: Poplar Tent Road
Foi
CH2M Hill, Inc.
14120 Ballantyne Corporate Place
Suite 200
Charlotte, North Carolina 28277
Attn: Mike Skeean
Authorized for release by.
712512019 4:03:39 PM
Jamie McKinney, Senior Project Manager
(865)291-3000
jamie.mckinney@testamericainc.com
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: 140-16144-1 F
SDG: WO 1907235
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 .........................................
11
Sample Summary .........................................
12
Chain of Custody ..........................................
13
Eurofins TestAmerica, Knoxville
Page 2 of 13 7/25/2019
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: 140-16144-1
SDG: WO 1907235
Eurofins TestAmerica, Knoxville
Page 3 of 13 7/25/2019
Case Narrative
Client: CH2M Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-16144-1
Laboratory: Eurofins TestAmerica, Knoxville
Narrative
Job Narrative
140-16144-1
Comments
No additional comments.
Job ID: 140-16144-1
SDG: WO 1907235
Receipt
The samples were received on 7/11/2019 9:40 AM; the samples arrived in good condition, properly preserved and, where required, on ice
Receipt Exceptions I
Sample identifications for samples SV-5R-071019 and SV-5RD-071019 were not provided on the sample tags. Identification was based
by matching the tube number between the
Chain of Custody and the sample tags.
T017
A sampling volume of 0.25 L was used to convert ng to ug/m3 for the associated Lab Blank.
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 13 7/25/2019
Detection Summary
Client: CH2M Hill, Inc. Job ID: 140-16144-1
Project/Site: Poplar Tent Road SDG: WO 1907235
Client Sample ID: SV-511-071019 Lab Sample ID: 140-16144-1
ENo Detections.
Client Sample ID: SV-5RD-071019 Lab Sample ID: 140-16144-2
ENo Detections.
This Detection Summary does not include radiochemical test results.
Eurofins TestAmerica, Knoxville
Page 5 of 13 7/25/2019
Client Sample Results
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Client Sample ID: SV-511-071019
Date Collected: 07/10/19 09:25
Date Received: 07/11/19 09:40
Job ID: 140-16144-1
SDG: WO 1907235
Lab Sample ID: 140-16144-1
Matrix: Air
Method: Local Method - General Subcontract Method
Analyte
Result
Qualifier
RL
MDL Unit D Prepared
Analyzed
Dil Fac
2-METHYLNAPHTHALENE
ND
U
20
2.6 UG/M3 07/11/19 21:27
07/11/19 21:27
1.00
NAPHTHALENE
ND
U
20
1.7 UG/M3 07/11/19 21:27
07/11/19 21:27
1.00
Surrogate
%Recovery
Qualifier
Limits
Prepared
Analyzed
DY Fac
NAPHTHALENE-D8
148
50 - 150
07111119 21:27
07111119 21:27
1.00
Client Sample ID: SV-5RD-071019
Date Collected: 07/10/19 09:28
Date Received: 07/11/19 09:40
Lab Sample ID: 140-16144-2
Matrix: Air
L
a
Method: Local Method - General Subcontract Method
Analyte
Result
Qualifier
RL
MDL Unit D Prepared
Analyzed
Dil Fac
2-METHYLNAPHTHALENE
ND
U
20
2.6 UG/M3 07/12/19 00:44
07/12/19 00:44
1.00
NAPHTHALENE
ND
U
20
1.7 UG/M3 07/12/19 00:44
07/12/19 00:44
1.00
Surrogate
%Recovery
Qualifier
Limits
Prepared
Analyzed
DU Fac
NAPHTHALENE-D8
138
50 - 150
07112119 00:44
07112119 00:44
1.00
Page 6 of 13
Eurofins TestAmerica, Knoxville
7/25/2019
Surrogate Summary
Client: CH21VI Hill, Inc. Job ID: 140-16144-1
Project/Site: Poplar Tent Road SDG: WO 1907235
Method: Local Method - General Subcontract Method
Matrix: Air Prep Type: Total/NA
Percent Surrogate Recovery (Acceptance Limits)
iTHALEN
Lab Sample ID Client Sample ID (50-150)
140-16144-1 SV-5R-071019 148
140-16144-2 SV-5RD-071019 138
Surrogate Legend
NAPHTHALENE-D8 = NAPHTHALENE-D8
Method: Local Method - General Subcontract Method
Matrix: AIR Prep Type: Total/NA
Percent Surrogate Recovery (Acceptance Limits)
-ITHALEN
Lab Sample ID Client Sample ID (50-150)
1907235-03A Method Blank 102
1907235-05A Lab Control Sample 110
1907235-05AA Lab Control Sample Dup 94
Surrogate Legend
NAPHTHALENE-D8 = NAPHTHALENE-D8
Eurofins TestAmerica, Knoxville
Page 7 of 13 7/25/2019
QC Sample Results
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Method: Local Method - General Subcontract Method
Lab Sample ID: 1907235-03A
Matrix: AIR
Analysis Batch: 11071107
Analyte
2-METHYLNAPHTHALENE
NAPHTHALENE
Blank
Blank
Result
Qualifier RL
ND
U 20
ND
U 20
Blank Blank
Surrogate %Recovery Qualifier
NAPHTHALENE-D8 102
Limits
50-150
Job ID: 140-16144-1
SDG: WO 1907235
Client Sample ID: Method Blank
Prep Type: Total/NA
Prep Batch: 11071107_P
MDL Unit D Prepared Analyzed Dil Fac
UG/M3 07/11/1913:29 07/11/1913:29 1.00
UG/M3 07/11/1913:29 07/11/1913:29 1.00
Prepared Analyzed Dil Fac
0711111913:29 0711111913:29 1.00
Lab Sample ID: 1907235-05A
Client Sample ID: Lab Control Sample
Matrix: AIR
Prep Type: Total/NA
Analysis Batch: 11071107
Prep Batch: 11071107_P
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier
Unit D %Rec Limits
2-METHYLNAPHTHALENE
100
106
UG/M3 106 70-130
NAPHTHALENE
100
110
UG/M3 110 70-130
LCS LCS
Surrogate %Recovery Qualifier Limits
NAPHTHALENE-D8 110 50 - 150
Lab Sample ID: 1907235-05AA
Client Sample ID: Lab Control Sample Dup
Matrix: AIR
Prep Type: Total/NA
Analysis Batch: 11071107
Prep Batch: 11071107 P
Spike
LCS Dup
LCS Dup %Rec. RPD
Analyte
Added
Result
Qualifier Unit D %Rec Limits RPD Limit
2-METHYLNAPHTHALENE
100
108
UG/M3 108 70-130 1.9 25
NAPHTHALENE
100
110
UG/M3 110 70-130 0 25
LCS Dup LCS Dup
Surrogate %Recovery Qualifier
Limits
NAPHTHALENE-D8 94
50 - 150
Page 8 of 13
Eurofins TestAmerica, Knoxville
7/25/2019
QC Association Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Subcontract
Analysis Batch: 11071107
Job ID: 140-16144-1
SDG: WO 1907235
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
140-16144-1
SV-5R-071019
Total/NA
Air
Local Method
140-16144-2
SV-5RD-071019
Total/NA
Air
Local Method
1907235-03A
Method Blank
Total/NA
AIR
Local Method
1907235-05A
Lab Control Sample
Total/NA
AIR
Local Method
1907235-05AA
Lab Control Sample Dup
Total/NA
AIR
Local Method
Prep Batch: 11071107_P
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
140-16144-1
SV-5R-071019
Total/NA
Air
NONE
140-16144-2
SV-5RD-071019
Total/NA
Air
NONE
1907235-03A
Method Blank
Total/NA
AIR
NONE
1907235-05A
Lab Control Sample
Total/NA
AIR
NONE
1907235-05AA
Lab Control Sample Dup
Total/NA
AIR
NONE
Prep Batch
11071107_P
11071107_P
11071107_P
11071107_P
11071107_P
Prep Batch
Eurofins TestAmerica, Knoxville
Page 9 of 13 7/25/2019
Lab Chronicle
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
F
Job ID: 140-16144-1
SDG: WO 1907235
Client Sample ID: SV-5R-071019 Lab Sample ID: 140-16144-1
Date Collected: 07/10/19 09:25 Matrix: Air
Date Received: 07/11/19 09:40
Batch
Batch
Prep Type Type
Method Run
Total/NA Prep
NONE
Total/NA Analysis
Local Method
Instrument
ID:
Client Sample ID: SV-5RD-071019
Date Collected: 07/10/19 09:28
Date Received: 07/11/19 09:40
Batch Batch
Prep Type Type Method Run
Total/NA Prep NONE
Total/NA Analysis Local Method
Instrument ID:
Client Sample ID: Method Blank
Date Collected: N/A
Date Received: N/A
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
1 11071107 07/11/19 21:27 Eurofins
_P
1.00 11071107 07/11/19 21:27 SU Eurofins
Ldu Jdfitple ILJ: I'FU- 10l4�F-L
Matrix: Air
Dil Initial
Final Batch
Prepared
F
Factor Amount
Amount Number
or Analyzed Analyst
Lab M
1
11071107
07/12/19 00:44
Eurofins
_P
1.00
11071107
07/12/19 00:44 SU
Eurofins
Lab Sample ID: 1907235-03A
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
11071107
07/11/1913:29
Eurofins
_P
Total/NA Analysis Local Method
1.00
11071107
07/11/19 13:29
SU
Eurofins
Instrument ID:
Client Sample ID: Lab Control Sample
Lab Sample ID:
1907235-05A
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
11071107
07/11/1910:11
Eurofins
_P
Total/NA Analysis Local Method
1.00
11071107
07/11/19 10:11
SU
Eurofins
Instrument ID:
Client Sample ID: Lab Control Sample Dup
Lab Sample ID: 1907235-05AA
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
11071107
07/11/1912:09
Eurofins
_P
Total/NA Analysis Local Method 1.00
11071107
07/11/19 12:09
SU Eurofins
Instrument ID:
Laboratory References:
Eurofins = Eurofins Air Toxics, 180 Blue Ravine Road„ Suite B, Folsom, CA 95630
Page 10 of 13
Eurofins TestAmerica, Knoxville
7/25/2019
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: 140-16144-1
SDG: WO 1907235
Laboratory
Eurofins
L
Eurofins TestAmerica, Knoxville
Page 11 of 13 7/25/2019
Sample Summary
Client: CH21VI Hill, Inc.
Project/Site: Poplar Tent Road
Job ID: 140-16144-1
SDG: WO 1907235
Lab Sample ID Client Sample ID Matrix Collected Received Asset ID
140-16144-1 SV-5R-071019 Air 07/10/19 09:25 07/11/19 09:40
140-16144-2 SV-5RD-071019 Air 07/10/19 09:28 07/11/19 09:40
Eurofins TestAmerica, Knoxville
Page 12 of 13 7/25/2019
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Page
13
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7/25/2019