MO-88110_88110_G_C_20190530_Jacobs & UST Section Meeting Summary & Rebound Monitoring Plan

JACOBS
May 30, 2019
Delivered via Email (trudy.bever1y(@ncdenr.goy, ron.taraban(d)ncdenr.gov)
Ms. Trudy Beverly and Mr. Ron Taraban
North Carolina Department of Environmental Quality
Division of Waste Management
Underground Storage Tank Section
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115
Subject: Meeting Summary and Rebound Monitoring Plan
Plantation Pipe Line Company
Poplar Tent Road Site
Concord, Cabarrus County, North Carolina
NCDEQ Groundwater Incident No. 88110
Dear Ms. Beverly and Mr. Taraban,
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 meeting with me on April 30, 2019 to discuss the Plantation Pipe Line Company
(Plantation) Poplar Tent Road Site. During the meeting, we reviewed the site history and remediation
progress to date and agreed on a proposed path forward which includes turning off the biosparging and
soil vapor extraction systems for approximately one year to monitor for the potential rebound of petroleum
constituents in groundwater during static conditions. As requested, Jacobs, on behalf of Plantation, has
prepared a supplemental monitoring plan, presented below, to monitor groundwater concentrations in key
monitoring wells on a quarterly basis while the remediation systems are not operating.
As we discussed, Plantation has made significant progress regarding remediation at the site. The
frequency of occurrence and thickness of light nonaqueous phase liquid (LNAPL) in monitoring wells has
been reduced from accumulations of up to five feet of LNAPL in 29 wells, historically, to zero detections of
LNAPL during the October 2018 and April 2019 monitoring events. Similarly, the concentrations of
dissolved -phase petroleum constituents have decreased significantly, and there were no exceedances of
the North Carolina Groundwater Quality Standards (NCGWQS) in samples collected in April 2018. In
October 2018, only benzene was detected, in one well (MW-10), at a concentration of 1.2 micrograms per
liter (µg/L), which is slightly above the NCGWQS of 1 µg/L. Additionally, there have been no exceedances
of soil gas screening criteria in soil vapor samples collected from monitoring points located on Lots 6 and
7 since April 2016.
As we agreed, the remediation system was turned off on May 1, 2019, and will be maintained throughout
the rebound study. Jacobs will conduct monthly site security inspections during the rebound monitoring
period.
In addition to the regularly -scheduled semiannual and annual monitoring events planned for October
2019 and April 2020, respectively, Plantation proposes to collect additional groundwater samples from six
key monitoring wells (MW-2, MW-3, MW-8D, MW-9, MW-10, and PZ-12, as shown on Figure 1) on a
quarterly basis in July 2019 and January 2020. During the quarterly monitoring events, groundwater
Jacobs Engineering Group Inc.

Ms. Trudy Beverly and Mr. Ron Taraban
May 30, 2019
Page 2 of 2
JACO BS¶
elevations and dissolved oxygen concentrations will be measured from each of the six listed monitoring
wells, and groundwater samples will be collected using HydraSleeve samplers and analyzed for benzene,
toluene, ethylbenzene, xylenes, and naphthalene by U.S. Environmental Protection Agency Method
8260B. A quarterly data submittal, consisting of a cover letter and the validated laboratory report, will be
submitted to NCDEQ, as well as the additional recipients of this communication, about 30 days after
sample collection. Since the remediation system is now shut down, the first quarterly data submittal will
be combined with the next Annual Monitoring Report, which is scheduled for submittal in August 2019.
Plantation and Jacobs appreciate the positive feedback that you provided during the meeting. If you have
any questions on the proposed monitoring plan or need additional information, please call me at
704.543.3285, or Jerry Aycock with Plantation at 770.751.4165.
Regards,
-)W,4 �ky)izeo-fc
Mike Skeean, P.E.
Project Manager
Copies to: Mr. Jerry Aycock, P.E., PPL—AO (via electronic transmittal)
Ms. Jessica Toll, Esq., PPL—LKWD (via electronic transmittal)
Mr. Ric Morton, Esq., WCSR (via electronic transmittal)
Ms. Susan Cooper, Esq., WCSR (via electronic transmittal)
Mr. Brian Pace, Laureldale, LLC (via electronic transmittal)
Mr. and Mrs. Derek Wilson, Property owner of Lot 6 (via electronic transmittal)
Mr. and Mrs. Nicholas Nestora, Property owner of Lot 7 (via electronic transmittal)
Mrs. Pam Mercer (via electronic transmittal)
Mr. Edward Perez, D.R. Horton, Inc. (via electronic transmittal)
Mr. Jason Goldstein, Amec Foster Wheeler (via electronic transmittal)
Attachment:
Figure 1 — Biosparging/SVE System As -Built

Figure

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TRENCH DRAIN \\
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LOCATION OF HBg
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o - - —
z
MW-1 T
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HORIZONTAL
BIOSPARGING WELL
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514'
TOTAL
60'
DEPTH FROM
ENTRY POINT
OR ZO T L
BIOSPARGING WELL
304'
RISER
298'
SCREEN
602'
TOTAL
60'
DEPTH FROM
ENTRY POINT
FORMER DPE WELLS
OPERATING AS SVE
(RW-7,RW-15,RW-16,
RW-12, RW-13 AND
SVE / BIOSPARGING
CONVEYANCE LINES ►j.
(HDD UTILITY BORE) \ DRAINAGEWAY
430' TOTAL
21.5' MAX. DEPTH
II \MW-11 SVE/BIOSPARGING
\\\ �W-11D
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ACCESS \
VAULT
\\ \ \ SV-16A `
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PZ-5 —
a LOT 6 LOT 7
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V,N
HORIZONTAL SOIL
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EXTRACTION WELL
18' RISER
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136' TOTAll
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frNJ P,191
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SURVEY BY TAYLOR WISEMAN & TAYLOR
20' SD
I
-4D
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CONVEYANCE LINES
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BIOSPARGING
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18" 1 DEPTH
DEEP VERTICAL
BIOSPARGING WELLS
7,1'-74' DEPTH _
MW-70 '
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MIDDLECREST DRIVE IIIWARGING
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SANITARY SEWER MANHOLE
FIRE HYDRANT
CURB INLET
CONCRETE CURB
Y
LIGHT POLE
CONCRETE
WOOD WALKWAY
— —
— PROPERTY LINE
-----
RIGHT OF WAY
— SANITARYSEWER
""—
WATERLINE
--------
STORM SEWER
EXISTING 26" U/G GASOLINE LINE
—°—°—G°—
EXISTING 10" U/G FIBER OPTIC LINE
EXISTING 14" U/G DIESEL FUEL LINE
UNDERGROUND ELECTRIC
OVERHEAD ELECTRIC
TREE LINE
SMW-8
SHALLOW MONITORING WELL
Q�MW-80
DEEP MONITORING WELL
®MW-8T
TRANSITION ZONE MONITORING WELL
OPZ-9
PIEZOMETER
+SW-101
SURFACE WATER SAMPLING LOCATION
❑°
RECOVERY WELL
— + —
DPE ANGLED WELL
4SV-5R
SOIL VAPOR MONITORING POINT
SVE-2 ❑
VERTICAL SVE WELL
SVE ACCESS VAULT
■
SOURCE AREA SVE WELL
VERTICAL BIOSPARGING WELL
CONVEYANCE PIPING ASSOCIATED WITH
THE BIOSPARGING SYSTEM
CONVEYANCE PIPING ASSOCIATED WITH
THE SVE SYSTEM
SCREENEDINTERVAL
=
INSTALLATION VIA HDD
/ MW-19D
1 \
/0 30 60 120
APPROXIMATE SCALE IN FEET
Figure 1. Biosparging/SVE System As -Built
Poplar Tent Rood Site
Plantation Pipe Line Company JACOBS®
Concord, North Carolina
KinderMorgan\358526PoplarTent\Reports\Groundwater Monitoring Reports\2018 Annual Report\Figures\CADD\FigureOl-BS-SVE-AsBuilt_Revl.dwg

Beverly, Trudy
From: Beverly, Trudy
Sent: Thursday, May 30, 2019 3:48 PM
To: Skeean, Mike/CLT; Taraban, Ron
Cc: [e-mail]; Jessica Toll
[e-mail]); [e-mail]; [e-mail];
Brian Pace; [e-mail]; Debbie Nestora; [e-mail];
Ed Perez; Corporate Environmental Group; [e-mail]
Subject: RE: [External] Plantation's Poplar Tent Road Site - Meeting Summary and
Rebound Monitoring Plan
Received.
Thank you,
Trudy
Ile DE
NORhI CARQLIN1a i
k1-11
Department of Environmental Quality
Tr* Z , L..%.
LET S q Momen. : Rqe and Offim
(7" 23S,21i2 (O
Tlr6illdy■ ��
L-rnail correspondence to and from this address is subject to the
North Carolina Public Recxxds Law and may be disclased to third parties.
Office Mailing Address:
610 East Center Avenue, Suite 301
Mooresville, NC 28115
Branch's Underground Storage Tanks Website Address: https:Hdeq.nc.gov/about/divisions/waste-management/ust
Branch's Above Ground Storage Tanks Website Address: https:Hdeq.nc.gov/about/divisions/waste-management/ust/ast-
program
INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES:
https://deg.nc.gov/about/divisions/waste-management/waste-management-rules-data/waste-mana eg ment- ig s maps
File Review Procedures:
https:Hdeq.nc. gov/about/divisions/waste-management/ust/file-review-procedures#mooresville-regional-office
ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche):
hlt2s:Hedocs.deq.nc.gov/\VasteManagement/Search.asp
gov/\VasteManagement/Search.aspx
Document Submittal & UST File Names for Laserfiche Policies:
hllps:Hfiles.nc. gov/ncdeq/Waste%2OManagement/DWM/UST/Corrective%2OAction/Electronic%2ODocument%2OSubmittal
%20Memo%2OUpdate.pdf
https:Hfiles.nc. gov/ncdeq/Waste%20Management/DWM/UST/Corrective%2OAction/UST%20file%20names%20for%2OLas
erfiche.docx
From: Skeean, Mike/CLT [mailto:[e-mail]]
Sent: Thursday, May 30, 2019 3:46 PM

To: Beverly, Trudy <[e-mail]>; Taraban, Ron <[e-mail]>
Cc: [e-mail]; Jessica Toll ([e-mail])
<[e-mail]>; [e-mail]; [e-mail]; Brian Pace
<[e-mail]>; [e-mail]; Debbie Nestora <[e-mail]>;
[e-mail]; Ed Perez <[e-mail]>; Corporate Environmental Group
<[e-mail]>; [e-mail]
Subject: [External] Plantation's Poplar Tent Road Site - Meeting Summary and Rebound Monitoring Plan
External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
Fechment to [e-mail]
Ms. Beverly, Mr. Taraban,
Please find attached a meeting summary from our meeting on April 30, 2019, and a rebound monitoring plan for
Plantation's Poplar Tent Road Site.
Please let me know if you have any questions or would like to discuss further.
Thank you,
Mike
Mike Skeean, P.E.
Jacobs
Project Manager I Global Environmental Solutions
704.543.3285
704.206.0869 mobile
mike.skeeanCa)iacobs.com
14120 Ballantyne Corporate Place
Suite 200
Charlotte, NC 28277
www.wacobs.com
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