MO-28067_47337_CA_RPTS_20200827_Tank Inspection Report

Cedar Rock
ENVIRONMENTAL
August 27, 2020
Ms. Evelyn Cardenas
7323 Ritter Drive
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 1335 Lake Way Drive,
Charlotte, North Carolina
Cedar Rock Project # 300922590
Dear Ms. Cardenas:
Cedar Rock Environmental, P. C. (Cedar Rock) performed a site inspection on August 25, 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 1973 which is most likely when the UST was installed.
An inactive UST was observed to be located perpendicular to and centered approximately 6.8 feet off the
western foundation wall and about 14.5 feet north of the southwestern foundation corner of the house. Both
the fill and vent pipes of the UST were observed to be intact. The depth to the top of the UST is
approximately 18 inches below land surface (bls). The UST has a length of about 62 inches with a diameter
of approximately 33.3 inches and a capacity of about 270 gallons. The UST was measured to contain
approximately 47 gallons of fluid. White flagging was installed to mark the ends of the UST. No other
USTs used for storing heating oil were discovered on the property 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 in the crawlspace to be cut and crimped about one foot off the foundation wall adjacent to
the UST. 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 eastern end of the tank
using a 3.25-inch diameter stainless steel hand auger. The boring was advanced to a depth of approximately
5.5 feet bls, about 1.3 feet below the bottom of the UST. A moderate to strong petroleum odor and local
discoloration was observed in the soils from a depth of approximately 4.0 to 5.5 feet bls suggesting
significant leakage from the UST has occurred. The native soil underlying the UST consists of a bluish
green brown sandy silt. One soil sample, CR-1, was collected at the base of the boring and can be submitted
for laboratory analysis, if required.
The property is currently serviced by a municipal water supply however, an inactive water supply well is
located approximately 68 feet southeast of the petroleum release. Because this well is within 150 feet of
the release, the property would be classified as "High Risk" by the State. No other wells were identified
within 150 feet of the release.
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

Ms. Evelyn Cardenas
August 27, 2020
Page 2
State as the "Responsible Party" for any State required action relating to the UST leakage. Upon request
by the property owner, 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 14313- 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 within 150
feet of the UST. 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 such as this wherein soil or groundwater
contamination exceeding applicable standards remains onsite. The property would be reclassified as "Low
Risk" if the inactive water supply well within 150 feet of the release were properly abandoned. Once
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, abandoning the inactive water supply well and completing Public Notification 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.
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", abandoning the inactive water 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 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. Please keep
in mind that attempting to remove the UST and all contaminated soils exceeding applicable standards
carries some financial risk because if all the contamination cannot be removed (i.e. if the contamination
extends deeper than our excavation equipment can reach), the State may require abandonment of the water
supply well, filing an NRP and performing Public Notification before issuing an NFA letter.
In the event the property can be reclassified to "Low Risk", another option would be 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,
pressure wash 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 $3,100.00 plus

Ms. Evelyn Cardenas
August 27, 2020
Page 3
$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. Cedar Rock would not be responsible for properly
abandoning the water supply well.
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,
Robert A. Payne, N.Cricensed Geologist #0970
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Beverly, Trudy
From: Beverly, Trudy
Sent: Wednesday, September 9, 2020 8:05 AM
To: [e-mail]
Subject: RE: [External] UST-61 form submission for the Richard Davis Property, 1335 Lake Way
Drive, Charlotte
Received.
Trudy
Trudy Beverly, L.G.
D-�IE Hydrogeologist, Division of Waste Management
North Carolina Department of Environmental Quality
IFepnrlren[ol Gma'nn mental4w
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://deg.nc.gov/about/divisions/waste-management/ust
Branch's Above Ground Storage Tanks Website Address: hit2s://deq.nc.gov/about/divisions/waste-management/ust/ast-program
INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES:
httns://dea.nc. gov/about/divisions/waste-management/waste-management-rules-data/waste-management-gis-mans
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):
fts://deq.nc.gov/about/divisions/waste-manaizement/laserfiche
Document Submittal & UST File Names for Laserfiche Policies:
htti)s:Hfiles.ne.izov/nedeafWaste%2OMana2ement/DWM/UST[WhatsNew/Final-Electronic-Document-Submittal-Policv.l)df
https:Hfiles.nc.gov/ncdeq/Waste%20Management/D WM/UST/Corrective%2OAction/UST%2Ofilc%20names%20for%2OLaserfiche.docx
From: [e-mail] [mailto:[e-mail]]
Sent: Wednesday, September 9, 2020 7:18 AM
To: Beverly, Trudy <[e-mail]>
Subject: [External] UST-61 form submission for the Richard Davis Property, 1335 Lake Way Drive, Charlotte
External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
report.spam@nc.l?ov
Hi Trudy
UST-61 and inspection report for this site attached. I included an image from Polaris 3G and marked in the approximate
UST and well locations.
Thanks
Damien Callaghan
Cedar Rock Environmental