MO-28174_47433_CA_O_20200921_Tank Inspection Report

Cedar Rock
ENVIRONMENTAL
September 21, 2020
Mr. Tim Cool
4411 Bellwood Lane
Charlotte, NC 28270
CEDAR ROCK ENVIRONMENTAL, P.C.
107 Pioneer Trail
Graham, NC 27253
[phone]
Reference: Inspection of an underground storage tank (UST) located at 4411 Bellwood
Lane, Charlotte, North Carolina
Cedar Rock Project # 304022590
Dear Mr. Cool:
Cedar Rock Environmental, P. C. (Cedar Rock) performed a site inspection on September 21, 2020
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 1965 which is most likely when
the UST would have been installed.
An inactive UST was observed to be located perpendicular to and centered approximately 17.0
feet off the northernmost foundation wall of the house and about 51.0 feet west of the northeastern
foundation corner of the house. The fill and vent pipes of the UST were observed to be intact.
The depth to the top of the UST is approximately 28 inches below land surface (bls). The UST
has a length of about 72 inches with a diameter of approximately 47 inches and a capacity of about
550 gallons. The UST was measured to contain approximately 31 gallons of fluid. White flagging
was installed to mark the ends of the UST. 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.
No copper fuel delivery/return lines, petroleum odors or stains were observed in the crawlspace
from the rear crawlspace entry, however, the crawlspace had been sealed which limited inspection.
Once the orientation of the UST was determined, a soil boring was performed beneath the northern
end of the UST using a 3.25-inch diameter stainless steel hand auger. The boring was advanced
to a depth of approximately 6.5 feet bls. A strong petroleum odor was observed in the soils from
a depth of approximately 5.7 to 6.5 bls suggesting significant leakage from the UST has occurred.
No soil discoloration was observed. The native soil underlying the UST consists of a light orange
brown micaceous sandy silt.
The property currently uses a municipal water supply, however, an inactive water supply well is
reported to exist somewhere on the property. The location of the well could not be determined as
there was no above grade wellhead. It is likely the well is within 150 feet of the petroleum release.
In such case, the property would be classified as "High Risk" by the State. The exact location of
the well needs to be determined as soon as possible as it factors into the decisions made for
resolving the petroleum release. Based on the topography of the property regarding suitable drill

Mr. Tim Cool
September 21, 2020
Page 2
sites for installing a well, it appears the well would be located within 150 feet of the petroleum
release. In such case, the property would be classified as `High Risk".
Based on the results of this investigation, significant contamination of the soils underlying 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. Upon your request, Cedar Rock will submit a UST-61 form to satisfy
the State's notification requirement for the release.
Currently, the property cannot be legally conveyed until a Notice of Residual Petroleum (NRP) is
filed with the Mecklenburg County Register of Deeds office pursuant to NCGS 143B- 279.11
(d). The NRP would 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. Further, the State will not issue a Notice of
No Further Action (NFA) letter to officially close out the release incident for High Risk properties
wherein soil or groundwater contamination exceeding applicable standards remains onsite. If the
property is High Risk, it would be reclassified as "Low Risk" if the well is properly abandoned.
If reclassified to Low Risk and an NRP approved, the DEQ would issue a "Conditional" 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, performing Public Notification and abandoning the
inactive onsite water supply well would not be required if all soil contamination exceeding
applicable standards is removed.
The State currently will require initial abatement or remedial action regarding the release of heating
oil from a UST on a High Risk property. Further, 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. There also
exists a potential for further environmental impact to the property from continued leakage from
the UST.
Assuming the property is classified as High Risk, an NFA letter can be obtained in two different
scenarios. Scenario One requires the removal of the UST and all associated contaminated soil
exceeding applicable standards. Scenario Two requires reclassifying the property to Low Risk by
abandoning the supply well, filing an NRP, and performing the Public Notification task.
Cedar Rock can remove the UST including 15 tons of contaminated soil for a charge of $8,500.00
plus $1.25 per gallon of recovered fluids. Tonnage in excess of 15 tons will be an added charge
at the rate of $125.00 per ton. Based on the observed soil contamination, it is estimated that at
least 20 tons of contaminated soil will require removal. This would include appropriate
environmental assessment, reporting, and site restoration. All work performed would be in
accordance with the recommended practices and procedures outlined in the Underground Storage

Mr. Tim Cool
September 21, 2020
Page 3
Tank Section Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement,
Change 9 (February 1, 2019), published by the North Carolina Department of Environmental
Quality, Division of Waste Management, UST Section.
In the event the property is classified as Low Risk, Cedar Rock can properly abandon the UST for
a charge of $3,100.00 plus $1.25 per gallon of recovered fluids. 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 to bare metal. Preparing and filing the NRP and performing the Public
Notification requirement will cost an additional $1,250.00. Cedar Rock would not be responsible
for locating or abandonment of the supply well. A certified well driller will need to locate and
abandon the well and produce a well abandonment record to document that the abandonment was
done properly if the well is located within 150 feet of the petroleum release.
Attached is an invoice for the site inspection. 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.
Sincerely,
0�Ct
Robert A. Payne, N.C. Licensed Geologist #0970
Attachment

Beverly, Trudy
From: Beverly, Trudy
Sent: Tuesday, December 22, 2020 11:04 AM
To: [e-mail]'
Subject: RE: [External] Tim Cool Property reports
Received.
Trudy
Trudy Beverly, L.G.
D
IE �1
Hydrogeologist, Division of Waste Management
_ North Carolina Department of Environmental Quality
Q�
LF Pa.rI n. of Lnorun,w 0MOT ` UST Section, Mooresville Regional Office
704.235.2182 (Office)
Trudy. B everlykncdenn 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: ht_pt s://deg.nc.gov/about/divisions/waste-management/ust
Branch's Above Ground Storage Tanks Website Address: hgps:Hdeg.nc.gov/about/divisions/waste-management/ust/ast-program
INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES:
httns://deu.nc. gov/about/divisions/waste-management/waste-management-rules-data/waste-management-gis-mans
File Review Procedures:
ht_pt s://deq.nc.gov/about/divisions/waste-management/ust/file-review-procedures#mooresville-regional-office
ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche):
htt2s://deg.nc.gov/about/divisions/waste-mana2ement/laserfiche
Document Submittal & UST File Names for Laserfiche Policies:
httys:Hfiles.nc.eov/nedea/Waste%2OMana2ement/DWM/UST[WhatsNew/Final-Electronic-Document-Submittal-Policy.odf
https:Hfiles.nc.gov/ncdeg/Waste%2OManagement/D WM/UST/Corrective%2OAction/UST%20file%20names%20for%2OLaserfiche.docx
From: [e-mail] [mailto:[e-mail]]
Sent: Tuesday, December 22, 2020 10:59 AM
To: Beverly, Trudy <[e-mail]>
Subject: [External] Tim Cool Property reports
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Reports for the Tim Cool Property attached.
Damien