MO-1810_13400_G_C_20200819_Report Receipt Letter

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
MICHAEL SCOTT
Director
Security Oil Company
Attn: Dale Carpenter
Post Office Box 5028
Concord, NC 28027
(via email)
Dear Mr. Carpenter:
NORTH CAROLINA
Environmental Quality
August 19, 2020
Re: Acknowledgement of Report Receipt
Rocky River Grocery
7939 Rocky River Rd., Concord
Cabarrus County
Incident number: 13400
Risk Classification: High
The UST Section, Division of Waste Management (DWM), Mooresville Regional Office
(MRO) received the June 29, 2020 Monitoring Report on June 29, 2020. The report recommending
continued semi-annual monitoring (May and November) and remediation additives was reviewed and
approved on August 19, 2020. The electronic copy has been loaded to the electronic document
storage system (Laserfiche).
The report indicates:
• Free product was not detected in the on -site monitoring wells during the May 2020 sampling
event.
• MADEP aliphatic (C9-C 18) and aromatic (C9-C22) constituents exceed their respective @L
Standard at the site (MW-2A and MW-8).
• MADEP aliphatic (C9-C 18) and aromatic (C9-C22) constituent concentrations increased in
monitoring well MW-8 and decreased in MW-2A when compared to the November 2019
sampling event.
• The Naphthalene concentration in MW-8 was detected above the 2L standard during the May
2020 sampling event, an increase from the previous sampling event.
• The other dissolved phase petroleum constituent concentrations have increased in MW-8 and
decreased in MW-2A, but remain below 2L standards from the previous sampling event.
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

• Total lead was not detected in monitoring wells during the May 2020 sampling event.
Historically, there does not appear to be a correlation between the total lead detections and
petroleum constituent detections. The presence of total lead is considered to be naturally -
occurring.
• Dissolved phase petroleum constituent compound concentrations have remained non -detect
in monitoring wells MW-1, MW-4A, MW-5A, MW-6A, MW-7, DMW-1, DMW-2, and in
water supply wells WSW-3 and WSW-4.
The next semi-annual groundwater monitoring event shall occur in November 2020 with the
Groundwater Monitoring Report submittal due to this office by December 31, 2020. Please note that
sampling and correction action must be conducted in accordance with the Guidelines for Assessment
and Corrective Action for UST Releases. Failure to comply in the manner and time specified may
result in the assessment of civil penalties and/or the use of the other enforcement mechanisms.
Please note that the AS/SVE remediation system must be properly maintained and the switch
ready in case future use is necessary.
If you have any questions regarding trust fund eligibility or reimbursement from the
Commercial or Noncommercial Leaking Petroleum Underground Storage Tank Cleanup Funds,
please contact the UST Section Trust Fund Branch at [phone]. 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, / ,�
�� y, L ;6"JX
Trudy Beverly, L.G.
Hydrogeologist
Mooresville Regional Office
UST Section, Division of Waste Management, NCDEQ
cc: Mike Downs, Cabarrus County Manager (via email)
Chrystal Swinger, Cabarrus County Environmental Health (via email)
Kevin Stachura & Thomas Wittier, Shield Engineering, Inc. (via email)
pannwY*�` n�ia.nama aal�
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
704.663.1644

Beverly, Trudy
From: Beverly, Trudy
Sent: Wednesday, August 19, 2020 10:49 AM
To: 'Dale Carpenter'
Cc: 'Mike Downs'; 'Chrystal Swinger'; 'Kevin Stachura'; 'Thomas Witner'
Subject: Rocky River Grocery - UST Incident #13400 — Acknowledgement of Report Receipt
Attachments: MO-1810_13400_G_C_20200819_Report Receipt Letter.pdf
Please see the attached Acknowledgement of Report Receipt letter for Rocky River Grocery located at 7939 Rocky River
Road, Concord, Cabarrus County, North Carolina (Incident #13400).
Trudy
Trudy Beverly, L.G.
Hydrogeologist, Division of Waste Management
z: North Carolina Department of Environmental Quality
- mt � UST Section, Mooresville Regional Office
���� 704.235.2182 (Office)
Trudy. B everly(a),ncderin 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: hitps://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-proeram
INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES:
httns://deu.nc. gov/about/divisions/waste-management/waste-management-rules-data/waste-management-eis-mans
File Review Procedures:
htips:Hdeq.nc. gov/about/divisions/waste-manaaement/ust/file-review-procedures#mooresville-regional-office
ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche):
https://deq.nc.gov/about/divisions/waste-management/laserfiche
Document Submittal & UST File Names for Laserfiche Policies:
https:Hflles.nc.gov/ncdeg[Waste%20Manatiement/DWM/UST[WhatsNew/Final-Electronic-Document-Submittal-Policv.pdf
https:Hfiles.nc.gov/ncdeq/Waste%20Management/DWM/UST/Corrective%2OAction/UST%20file%20names%20for%2OLaserfiche.docx