MO-29011_48204_CA_O_20220106_UST Inspection

Cedar Rock
ENVIRONMENTAL
January 6, 2022
Mr. Don Hemby
520 Sweet Peach Lane
Fort Mill, SC 29715
CEDAR ROCK ENVIRONMENTAL, P.C.
107 Pioneer Trail
Graham, NC 27253
[phone]
Reference: Inspection of an underground storage tank (UST) located at 706 Pearl Avenue,
Kannapolis, North Carolina
Cedar Rock Project # 334822590
Dear Mr. Hemby:
Cedar Rock Environmental, P. C. (Cedar Rock) performed a site inspection on January 5, 2022 at the above
referenced location. The purpose of the inspection was to determine if the UST previously used for storing
heating oil had leaked causing significant contamination of the underlying soils. It is our understanding the
residence was built in 1948 which is most likely when the UST was installed.
An inactive UST was observed to be located as shown in the Site Sketch. Both the fill and vent pipes of
the UST were observed to be intact, however, the fill pipe had a makeshift cap and the vent pipe was missing
its cap. The depth to the top of the UST is approximately 24 inches below land surface (bls). The UST has
a length of about 92 inches with a diameter of approximately 41 inches and a capacity of about 560 gallons.
The UST was measured to contain approximately 79 gallons of fluid. White flagging was installed to mark
the ends of the UST (see Photo). No other USTs on the property were discovered using a metal detector to
survey the outside perimeter of the residence where USTs are usually located. Two copper fuel
delivery/return lines were observed extending about 15 feet into the crawlspace where they were open-
ended and disconnected to the inactive furnace. No petroleum odor or staining was observed in the
crawlspace.
Once the orientation of the UST was determined, a soil boring was performed at the northern end of the
UST using a 3.25-inch diameter stainless steel hand auger. The soil boring was advanced to a depth of
approximately 5.4 feet bls, about the bottom of the UST. A strong petroleum odor and discoloration was
observed in the soils from a depth of approximately 4.5 to 5.4 feet bls suggesting significant leakage from
the UST has occurred. Fluid was observed in the base of the boring. The soils at the base of the boring
consist of a discolored brownish gray micaceous silty coarse sand. One soil sample, CR-1, was collected
from the base of the boring and can be submitted for laboratory analysis, if required.
The property is currently serviced by a municipal water supply. No water supply wells were observed
within 150 feet of the petroleum release. For this reason, the property should be classified as "Low Risk"
by the State.
Based on the results of this investigation, significant contamination of the soils surrounding the UST has
been confirmed. Current law (NCGS 143-215.85 (a) and (b)) requires that any significant release of
petroleum be immediately reported to the North Carolina Department of Environmental Quality (DEQ),
Division of Waste Management, Mooresville Regional Office (704-663-1699). According to State law,
upon reporting the release, the current property owner where a release is discovered is identified by the
State as the "Responsible Party" for any State required action relating to the UST leakage. Cedar Rock will
submit a UST-61 form to satisfy the State's notification requirement for the release upon request by the

Mr. Don Hemby
January 6, 2022
Page 2
property owner.
Currently, the property cannot be legally conveyed until a Notice of Residual Petroleum (NRP) is filed with
the Cabarrus County Register of Deeds office pursuant to NCGS 14313- 279.11 (d). The NRP will contain
applicable land use restrictions to minimize the risk of exposure to existing contamination. The land use
restrictions prohibit any disturbance of site soils within a specified radius of the estimated extent of soil
contamination and prohibit the future operation or installation of any water supply wells on the
property. Once classified as "Low Risk" and upon approval of the NRP, the DEQ will issue a "Conditional"
Notice of No Further Action (NFA) letter to formally close out the release incident. The "Conditional"
provision in the NFA letter will be removed upon receiving a certified copy of the filed NRP and
the completion of Public Notification requirements. Filing the NRP and performing Public Notification
would not be required if all soil contamination exceeding applicable standards has been removed.
The State currently will not require initial abatement or remedial action of the soils regarding the release of
heating oil from a UST on a "Low Risk" property, however, they will require removal of the tank contents
and properly cleaning the tank interior to abate the petroleum release. Once the presence of the UST and
confirmed contaminated soil is disclosed to other interested parties as required by State law, future buyers,
homeowner's insurance providers, or lenders may also require initial abatement and/or remedial actions
relating to the UST prior to making any commitments towards the property.
Currently, the presence of the soil contamination does not appear to pose any known health risk. Attempting
to remove the UST and associated contaminated soils is costly, would be disruptive to the property, and
may not result in a clean closure. For these reasons, we recommend the in -place abandonment of the UST.
The tank abandonment would consist of exposing a portion of the UST by hand excavation, cutting a hole
about two feet in diameter on the topside of the UST, removing all tank and fuel line contents, cleaning of
the tank interior, and filling the tank with an excavatable flowable fill cement slurry. A summary report
signed by a licensed geologist would be generated that would include photographs of each step of the
abandonment process, including a photograph of the interior of the UST to show the UST was properly
cleaned. Cedar Rock can provide this service for a charge of $3,300.00 plus $1.25 per gallon of recovered
fluids. Preparing and filing the NRP and performing the Public Notification requirement will cost an
additional $1,250.00.
Included with this report is our invoice. We appreciate the opportunity to be of service to you. If you have
any questions regarding the content of this report, please call me at 336-376-0394.
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Sincerely,
# NC.
Robert A. Payne, N.C�icensed Geologist #0970 =L
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Attachment

Mr. Don Hemby
January 6, 2022
Page 3
N
8 ft
Site Sketch. Not to scale. Sketch used for reference purposes only.
Photo. View of the UST location. Both ends of the UST are marked with white flags.

Beverly, Trudy
From: Beverly, Trudy
Sent: Friday, January 7, 2022 11:05 AM
To: [e-mail]
Subject: RE: [External] UST-61 form submission for the Donald Hemby Property, 706 Pearl Ave, Kannapolis,
Cabarrus Co.
Received.
Trudy
Trudy Beverly, L.G.
Hydrogeologist, Division of Waste Management
Q4 North Carolina Department of Environmental Quality
1°", UST Section, Mooresville Regional Office
704.235.2182 (Office)
Trudy.Beverly a,ncdenr.gou
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: h_ptt s://deg.nc.gov/about/divisions/waste-management/ust/ast-program
INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES:
httns://deo.nc. eov/about/divisions/waste-manaeement/waste-manaeement-rules-data/waste-manaeement-eis-macs
File Review Procedures:
hops: //deq.ne. gov/about/divisions/waste-management/ust/file-review-procedures#mooresville-regional-office
ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche):
hit 2s://deg.nc.gov/about/divisions/Waste-management/laserfiche
Document Submittal & UST File Names for Laserfiche Policies:
https:Hfiles.nc.gov/nedeg/Waste%2OManagement/DWM/UST/W hatsNew/Final-Electronic-Document-Submittal-Policy.pdf
hops://files.nc. eov/ncdeq/Waste%20Management/DWM/UST/Corrective%2OAction/UST%2Ofile%20names%20for%2OLaserfiche.docx
From: [e-mail] [mailto:[e-mail]]
Sent: Friday, January 7, 2022 11:01 AM
To: Beverly, Trudy <[e-mail]>
Subject: [External] UST-61 form submission for the Donald Hemby Property, 706 Pearl Ave, Kannapolis, Cabarrus Co.
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Hi Trudy
UST-61 form and a copy of our inspection report attached for a release at the above address.
Thanks
Damien Callaghan
Cedar Rock Environmental