MO-14414_14414_G_NORR_20191024_Notice of Regulatory Requirements

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
MICHAEL SCOTT
Director
Colonial Pipeline Company
Attn: John Culbreath
Post Office Box 87
Paw Creek, NC 28130
(via email)
Dear Mr. Culbreath:
NORTH CAROLINA
Environmental Quality
October 24, 2019
Re: Notice of Regulatory Requirements
15A NCAC 2L .0507(b)
Risk -based Assessment and Corrective Action
for Petroleum Aboveground Storage Tanks
and Sources
Colonial Pipeline - Kannapolis Station &
Colonial Pipeline-Kannapolis Station #2
9301 Mooresville Road, Kannapolis/Concord
Cabarrus County
Incident number: 14414 & 91340
Risk Classification: High
The UST Section, Division of Waste Management (DWM), Mooresville Regional Office
(MRO) received the October 14, 2019 Semiannual Groundwater Monitoring Report on October 15,
2019. The report recommending continued semi-annual monitoring was reviewed and approved on
October 22, 2019. The paper report copy will be maintained in the MRO. The electronic copy has
been loaded to the electronic document storage system (Laserfiche).
The report indicates:
• LNAPL was not detected in groundwater beneath the site
• Benzene was detected above 2L and 2B Standards in monitoring wells MW-6 and MW-13.
Detections of benzene in MW-6 and MW-13 are associated with historic releases at the Site.
• MW-6 is located approximately 150 feet from the nearest surface water body. Although 213
Surface Water Standards were exceeded in MW-6 and MW-13, any discharge of the
groundwater plume to surface water would not likely contravene the surface water standards
within the surface water body.
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

• C9-C 10 Aromatics and C 11-C22 Aromatic concentrations exceeded the applicable 2L
Standards in MW-24.
• Results of the water supply well sampling indicated an absence of petroleum hydrocarbon
constituents in the water supply wells with the exception of trace detections of total xylenes
and toluene in the Coren Well (DW-Coren-Influent) at concentrations below the 2L
Standards of 500 µg/L for total xylenes, and 600 µg/L for toluene. Toluene was detected at
this well in August 2017. Total xylenes have historically been non -detect in DW-Coren-
Influent. This well is served by a POE system.
Per this Notice of Regulatory Requirements:
• Continue semi-annual groundwater sampling events in February (monitoring wells) and
August (monitoring & residential water supply wells) of each year. Monitoring reports will
be due by October 31 st of each year.
• The next report shall include a water supply well a table with related ownership information,
well operational status, well usage, and access permission status in accordance with the most
recent version of the Guidelines for Initial Response and Abatement, Assessment, and
Corrective Action for Non -UST Releases of Petroleum.
• The next report shall include a table with water supply well sample results to date in
accordance with the most recent version of the Guidelines for Initial Response and
Abatement, Assessment, and Corrective Action for Non -UST Releases of Petroleum.
• The next monitoring report is due by October 31, 2020.
Please note that sampling, correction action, and reporting must be conducted in accordance
with the most recent version of the Guidelines for Initial Response and Abatement, Assessment, and
Corrective Action for Non -UST Releases of Petroleum. 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. 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 Trudy.Beverlygncdenr.gov or telephone at
[phone].
Sincerely,
� 11*1 ;61w -
Trudy Beverly, L.G.
Hydrogeologist
Mooresville Regional Office
UST Section, Division of Waste Management, NCDEQ
cc: Jeff Morrison, Colonial Pipeline Company (via email)
Mike Downs, Cabarrus County Manager (via email)
David Troutman, Cabarrus County Health Department (via email)
Andrew Street & Eric Wysong, Apex Companies, LLC (via email)
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:
Friday, October 25, 2019 12:45 PM
To:
John Culbreath
Cc:
Andrew Street; Eric Wysong; Jeff Morrison; Eric Wysong; Mike Downs; David
Troutman
Subject: Colonial Pipeline - Kannapolis Station & Colonial Pipeline-Kannapolis Station #
2 - Incident #14414 & #91340 — Notice of Regulatory Requirements
Attachments: MO-14414_14414_G_NORR_20191024_Notice of Regulatory Requirements.pdf
Please see the attached Notice of Regulatory Requirements letter for Colonial Pipeline - Kannapolis Station &
Colonial Pipeline-Kannapolis Station #2 located at 9301 Mooresville Road, Kannapolis/Concord, Cabarrus
County, North Carolina (Incident #14414 & #91340).
Trudy
Trudy Beverly, L.G.
D, E 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: hops://deg.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-program
INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES:
https://dea.nc. gov/about/divisions/waste-management/waste-management-rules-data/waste-management-gis-mans
File Review Procedures:
httDS://dca. nc. gov/about/divisions/waste-management/ust/file-review-procedures#mooresville-regional-office
ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche):
hops//cdocs.dcq.nc.,ov/WastcManagcmcnt/Scarch.aspx
Document Submittal & UST File Names for Laserfiche Policies:
hns:Hfiles.nc. gov/ncdeq/Waste%2OManagement/DWM[UST/Corrective%2OAction/Electronic%2ODocument%2OSubmittal%2OMemo%2OUpdate.pdf
https:Hfiles.nc.gov/ncdeq/Waste%20Management/DWMfUST/Corrective%2OAction/UST%2Ofile%20names%20for%2OLaserfiche.docx