HomeMy WebLinkAboutWS-29702_48827_CA_TCR_20230120CEDAR ROCK ENVIRONMENTAL, P.C.
107 Pioneer Trail
Graham, NC 27253
(336) 376-0394
January 20, 2023
Mr. Richard Needham
P. O. Box 10241
Greensboro, NC 27404
RE: Underground Storage Tank (UST) Closure Assessment Report
1126 Westridge Road, Greensboro, North Carolina
Cedar Rock Project Number 354122590
Dear Mr. Needham:
Cedar Rock Environmental, P.C. (Cedar Rock) is pleased to submit this report describing activities
and results for the in-place abandonment of the onsite UST located at 1126 Westridge Road in
Greensboro, North Carolina. The UST abandonment was performed on January 20, 2023.
Included in this report are project documents consisting of a disposal manifest and photographic
documentation. This report should be kept with other documents pertaining to the residential
property.
Soil contamination was detected beneath the UST during a site inspection performed on November
2, 2022. The release was reported to the Department of Environmental Quality (DEQ) using a
UST-61 form on January 10, 2023. Although the State no longer requires further assessment of
the contamination, the State does require the filing of a Notice of Residual Petroleum (NRP) prior
to conveying the property to another party. The NRP includes land use restrictions prohibiting
any disturbance of site soils within a specified radius of the estimated extent of soil contamination
and prohibits the use or installation of any water supply wells on the property. Cedar Rock filed
the NRP on January 13, 2023. The DEQ issued a Conditional Notice of No Further Action (NFA)
letter on January 13, 2023. Upon receipt of proof that the local officials and adjacent property
owners have been notified of the release by receiving a copy of the Conditional NFA letter, and
that the NRP has been filed, the DEQ will reissue the NFA letter with no conditions to officially
close out the petroleum release incident.
Enclosed is an invoice for this work effort. If you have any questions, please do not hesitate to
contact me at 336-376-0394. Thank you for your consideration of Cedar Rock to provide you with
this service.
Sincerely,
Robert A. Payne, L.G.
President
Attachments
Cedar Rock
ENVIRONMENTAL
UNDERGROUND STORAGE TANK
CLOSURE ASSESSMENT REPORT FOR
1126 WESTRIDGE ROAD
GREENSBORO, NORTH CAROLINA
Prepared for:
Mr. Richard Needham
Greensboro, North Carolina
Prepared by:
Cedar Rock Environmental, P.C.
107 Pioneer Trail
Graham, North Carolina
_____________________
Robert A. Payne, L.G.
President
January 20, 2023
CR #354122590
i
TABLE OF CONTENTS
Section Page No.
1.0 INTRODUCTION 1
2.0 PROJECT 1
FIGURE
1 Site Map
APPENDICES
A Fluid Disposal Manifest
B Photographic Documentation
ii
I hereby certify this 20th day of January 2023 that this report was prepared by me or under my
direct supervision.
Robert A. Payne, L.G.
Geologist
1
1.0 INTRODUCTION
Cedar Rock Environmental, P.C. (Cedar Rock) was contacted by Mr. Richard Needham of
Greensboro, North Carolina to abandon in-place an underground storage tank (UST) located at
1126 Westridge Road in Greensboro, North Carolina. The UST was first inspected on November
2, 2022.
An inactive UST was discovered to be located as shown in the Site Map. Neither the fill nor vent
pipes to the UST were observed. The depth to the top of the UST is approximately 16 inches
below land surface (bls). The UST has a length of about 74 inches with a diameter of
approximately 46 inches and a capacity of about 550 gallons. The contents of the UST could not
be determined as there was no access available to the interior of the tank, however, based on
sounding with a probing rod, the tank does not appear to be full. White flagging was installed to
mark both ends of the UST (see Photo 1). 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
basement extending up from the concrete floor about 4 feet. One of the lines was open-ended and
the other valved closed. No petroleum odor or staining was observed in the basement.
Once the orientation of the UST was determined, a soil boring was performed at the northeastern
end of the tank using a 3.25-inch diameter stainless steel hand auger. The boring was advanced to
a depth of approximately 5.25 feet bls, about the bottom of the UST. A strong petroleum odor was
observed in the soils from a depth of approximately 4.0 to 5.25 feet bls suggesting significant
leakage from the UST has occurred. The soils at the base of the boring consist of a reddish orange
silt.
2.0 PROJECT
The in-place abandonment of the UST was performed on January 20, 2023. The abandonment
consisted of the hand excavation of the soils overlying the center of the UST to expose the topside
of the tank. A hole approximately 1.5 feet in diameter was then cut on the top of the UST to allow
for removal of the tank contents, cleaning and visual inspection of the UST interior, and subsequent
filling. The UST was measured to contain approximately 124 gallons of fluids. The tank was
pressure washed to remove all residual petroleum sludge. Vacuum was applied to the fuel lines in
an attempt to remove residual fuel. The fuel lines were removed from the basement area.
Approximately 154 gallons of fluid and sludge (including rinsate) were removed from the UST.
The fluid disposal manifest for the tank contents is included in Appendix A.
After the interior of the UST was cleaned, the tank was then entirely filled with an excavatable
flowable fill cement slurry. Once filled, the exposed portion of the UST was then covered with
site soils (see Appendix B - Photographic Documentation).
FIGURE
SITE MAP
PROJECT: ____________________________CEDAR ROCK
ENVIRONMENTAL, P. C.SITE MAP
INCIDENT #: __________________________
LOCATION: ___________________________
___________________________
CRE PROJECT NUMBER: _______________
FILENAME: ____________________
VERSION DATE: ________________
: T1 = 550-Gallon UST
Ethel C. Fulton Revocable Trust Property
48827
1126 Westridge Road
Greensboro, Guilford Co.
354122590
3541-Fig1.tcw
N
FIGURE 1
0 5 10 20
1 inch = 10 feet
T1
House
Porch
Deck
1/20/2023
APPENDIX A
FLUID DISPOSAL MANIFEST
APPENDIX B
PHOTOGRAPHIC DOCUMENTATION
Photo 1. View of the UST site prior to abandonment activities.
Photo 2. View of the UST interior prior to the removal of tank contents.
Photo 3. View of the UST interior after the removal of UST contents and
pressure wash cleaning of the tank interior.
Photo 4. View of the UST being filled with flowable fill cement slurry.
Photo 5. View of the UST after filling with flowable fill cement slurry.
Photo 6. View of the UST site after the completion of abandonment activities.