MO-6731_27502_G_NORR_20191212_Notice of Regulatory Requirements

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
MICHAEL SCOTT
Director
Service Distributing Company, Inc.
Post Office Box 310
Albemarle, NC 28002
Attn: Robert E. Gresham
Dear Mr. Gresham:
NORTH CAROLINA
Environmental Quality
December 12, 2019
Re: Notice of Regulatory Requirements
15A NCAC 2L .0407(b)
Risk -based Assessment and Corrective Action
for Petroleum Underground Storage Tanks
Servco No. 00311
24 North Church Street, Concord
Cabarrus County
Incident Number: 27502
Risk Classification: High
The UST Section, Division of Waste Management (DWM), Mooresville Regional Office (MRO)
received the November 15, 2019 Groundwater Sampling Letter Report on November 19, 2019. The
report recommending incident closure through a Notice of Residual Petroleum and issuance of a No
Further Action for the incident was reviewed and approved on November 20, 2019. The paper report
copies will be maintained in the MRO. The electronic copies have been loaded to the DWM's electronic
document storage system (Laserfiche).
The report states:
• Excel obtained groundwater samples from monitoring wells MW-8, MW-9 and MW-IOR on
November 1, 2019.
• Laboratory analytical data indicates that overall dissolved phase hydrocarbon constituents
continues to occur at the site and are decreasing with some seasonal fluctuations. Remaining
constituent levels exceed NCAC 2L standards for all three monitoring wells for various
constituents and at MW-1 OR exceed NCAC 2B standards for toluene.
• Review of the current data indicates that the predominant groundwater flow at the site is in a
northeasterly direction.
• Based on previous receptor surveys completed by ECEA, there is one water supply well utilized
for irrigation purposes only and located approximately 170 feet upgradient of the release source
D_E Q�
North Carolina Department of Environmental Quality I Division of Waste Management
Mooresville Regional Office 1 610 East Center Avenue, Suite 301 1 Mooresville, North Carolina 28115
704.663.1699

area. The closest surface water body appears to be an unnamed tributary of Three Mile Branch
located approximately 500 feet north of the subject property based on a review of the USGS
topographic maps. It appears the surface water is classified as class "C" surface water. Based on
the presence of the irrigation well located within 250 feet of the source area, the site is ranked as a
"High" risk site.
The soil and groundwater remediation system, consisting of a soil vapor extraction and air sparge
system was started on June 28, 2010. Based on the TA dated September 13, 2018 Excel shut the
system down on September 27, 2018.
Current laboratory analytical data indicates that overall dissolved phase hydrocarbon constituents
Per this Notice of Regulatory Requirements:
• Sample monitoring wells MW-8, MW-9, and MW-10R for the May 2020 sampling event.
• The remediation system can remain off. The AS/SVE remediation system must be properly
maintained and the switch ready in case future use is necessary.
• The next monitoring report is due prior to June 1, 2020 (letter report).
If you have any questions regarding the actions that must be taken or the rules mentioned in this
letter, please contact me by email at [e-mail] or telephone at [phone].
Sincerely,
6 I'll Feu+
Trudy Beverly, L.G.
Hydrogeologist
Mooresville Regional Office
UST Section, Division of Waste Management, NCDEQ
cc: Mike Stanforth & Donna Farris, Excel Civil & Environmental Associates, PLLC (via email)
Mike Downs, Cabarrus County Manager (via email)
Chrystal Swinger, Cabarrus County Health Department (via email)
Ed Watson, NCDEQ-Division of Water Quality -Regional Operations Section (via email)
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North Carolina Department of Environmental Quality I Division of Waste Management
Mooresville Regional Office 1 610 East Center Avenue, Suite 301 1 Mooresville, North Carolina 28115
704.663.1699

Beverly, Trudy
From: Beverly, Trudy
Sent: Thursday, December 12, 2019 9:42 AM
To: Mike Stanforth; Donna Farris; Mike Downs; Chrystal Swinger; Watson, Edward
M
Subject: Servco No. 00311 - UST Incident #27502 — Notice of Regulatory Requirements
Attachments: MO-6731_27502_G_NORR_20191212_Notice of Regulatory Requirements.pdf
Please see the attached Notice of Regulatory Requirements letter for Servco No. 00311 located at 24 North
Church Street in Concord, Cabarrus County, North Carolina (Incident #27502).
Trudy
Trudy Beverly, L.G.
Hydrogeologist, Division of Waste Management
North Carolina Department of Environmental Quality
UST Section, Mooresville Regional Office
704.235.2182 (Office)
Trudy. B everlykncdenr. gov
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
Office Mailing Address:
610 East Center Avenue, Suite 301
Mooresville, NC 28115
Branch's Underground Storage Tanks Website Address: https://deq.nc.gov/about/divisions/waste-management/ust
Branch's Above Ground Storage Tanks Website Address: https://deq.nc.gov/about/divisions/waste-management/ust/ast-prog am
INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES:
https://deo.nc. eov/about/divisions/waste-manaeement/waste-manaeement-rules-data/waste-manaeement-eis-mans
File Review Procedures:
https://deq.nc. gov/about/divisions/waste-manaaement/ust/file-review-procedures#mooresville-regional-office
ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche):
httns://deo.nc. eov/about/divisions/waste-manaeement/laserfiche
Document Submittal & UST File Names for Laserfiche Policies:
htips://files.nc. gov/ncdeq/W aste°/`2OMana,gement/D WM/UST/Corrective%2OAction/Electronic%2ODocument%2OSubmittal%2OMemo%2OUpdate.pdf
https:Hfiles.nc. gov/ncdeq/Waste%2OManagement/DWM/UST/Corrective%2OAction/UST%2Ofile%20namcs%20for%2OLaserfiche.docx