MO-29960_49046_CA_CLO_20230614_UST Abandonment Report

Cedar Rock
ENVIRONMENTAL
June 14, 2023
Ms. Cynthia Schwartz
2154 N. Pollard Street
Arlington, VA 22207
CEDAR ROCK ENVIRONMENTAL, P.C.
107 Pioneer Trail
Graham, NC 27253
[phone]
RE: Underground Storage Tank (UST) Closure Assessment Report
421 Rensselaer Avenue, Charlotte, North Carolina
Cedar Rock Project Number 366622590
Dear Ms. Schwartz:
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 421 Rensselaer Avenue in
Charlotte, North Carolina. The UST abandonment was performed on June 14, 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 June 7,
2023. The release was reported to the Department of Environmental Quality (DEQ) using a UST-
61 form on June 7, 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 June 8, 2023. The DEQ should issue a Conditional Notice of No Further Action (NFA)
letter within the next few days. 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 336-684-2734. Thank you for your consideration of Cedar Rock to provide you with
this service.
Sincerely,
w�ct
Robert A. Payne, L G.
President
Attachments

UNDERGROUND STORAGE TANK
CLOSURE ASSESSMENT REPORT FOR
421 RENSSELAER AVENUE
CHARLOTTE, NORTH CAROLINA
Prepared for:
Ms. Cynthia Schwartz
Arlington, Virginia
Prepared by:
Cedar Rock Environmental, P.C.
107 Pioneer Trail
Graham, North Carolina
Robert A. Payne, L.G.
President
June 14, 2023
CR #366622590

Section
TABLE OF CONTENTS
1.0 INTRODUCTION
2.0 PROJECT
FIGURE
Site Map
APPENDICES
A Fluid Disposal Manifest
B Photographic Documentation
Page No.

I hereby certify this 14th day of June 2023 that this report was prepared by me or under my
direct supervision. ..&#"
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Robert A. Payne, L.G
Geologist
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1.0 INTRODUCTION
Cedar Rock Environmental, P.C. (Cedar Rock) was contacted by Ms. Cynthia Schwartz of
Arlington, Virginia to abandon in -place an underground storage tank (UST) located at 421
Rensselaer Avenue in Charlotte, North Carolina. The UST was first inspected on June 7, 2023.
An inactive UST was observed to be located as shown in the Site Map. Both the fill and vent pipes
of the UST were observed to be intact, however, the vent pipe was missing its cap. The depth to
the top of the UST is approximately 20 inches below land surface (bls). The UST has a length of
about 92 inches with a diameter of approximately 41.25 inches and a capacity of about 560 gallons.
The UST was observed to be dry containing no fluids. White flagging was installed to mark the
ends of the UST (see Photo 1). 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
basement/crawlspace, however, the crawlspace had plastic on the floor.
Once the orientation of the UST was determined, a soil boring was performed at the northeastern
end of the UST using a 3.25-inch diameter stainless steel hand auger. The soil boring was
advanced to a depth of approximately 5.5 feet bls, about 0.4 feet below the bottom of the UST. A
strong petroleum odor and discoloration was observed in the soils from a depth of approximately
4.5 to 5.5 feet bls suggesting significant leakage from the UST has occurred. The native soils
underlying the UST consist of an orange, brown sandy silt.
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.
2.0 PROJECT
The in -place abandonment of the UST was performed on June 14, 2023. The abandonment
consisted of the hand excavation of the soils overlying the northeastern end 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 tank was pressure washed to remove all residual petroleum sludge.
Vacuum was applied to the fuel lines in an attempt to remove any residual oil in the lines.
Approximately 40 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).
1

FIGURE
SITE MAP

1 inch = 10 feet
PROJECT: Revocable Trust Property CEDAR ROCK
INCIDENT#: 49046 ENVIRONMENTAL, P. C.
LOCATION: 421 Rensselaer Avenue
T1 = 560-Gallon UST
L-----J
SITE MAP
Charlotte, Mecklenburg Co. FILENAME: 3666-Figl.tcw
CRE PROJECT NUMBER: 366622590VERSION DATE: 6/14/2023
FIGURE 1

APPENDIX A
FLUID DISPOSAL MANIFEST

MATERIAL
MANIFEST
EMERGENCY PHONE NO
[phone]
Name
Street Address
DESCRIPTION OF MATERIALS
TERRA
POST OFFICE BOX 357
HIGH POINT, NC 27261
NOVA
TEL [phone]
FAX [phone]
GENERATOR INFORMATION
Mailing Address
Manifest Document No.
Page of
Zebra Job No.
EPA ID No.
one No.
Contact
USDOT Proper Shipping Name
HMI (Complete All Items for Hazardous Materials)
Hazard
Class or Div
UN / NA
ID No.
Packing
Group
Containers
Qty. Type
Total
Quantity
Unit
Wt./Vol.
a.
b.
C.
ADDITIONAL INFORMATION
ERG No.
Zebra Profile Code
Facility Use
a.
b.
C.
GENERATOR'S CERTIFICATION
This is to certify that the above -described materials are properly classified, described, packaged, marked and labeled, and are in
proper condition for transportation according to the applicable regulations of the Department of Transportation. 1 further certify that
none of the materials described above are a hazardous waste as defined by EPA 40 CFR Part 261 or any applicable state law, and
unless specifically identified above, the materials contain less than 1, 000 ppm total halogens and do not contain quantifiable levels
(2 ppm) of PCBs as defined by EPA 40 CFR Parts 279 and 761.
TRANSPORTER INFORMATION
Transporter TN Solutions, Inc.
I hereby acknowledge receipt of the above -described materials for transport
from the generator site listed above.
Address
901 East Springfield Road
High Point, NC 27263
Signature Shipment Date
I hereby acknowledge receipt of the above -described materials were received
from the generator site and were transported to the facility listed below.
Transporter or NC0991302669
Unit No.
EPA ID No.
Signature Delivery Date
Phone [phone]
FACILITY INFORMATION
Facility
TN Solutions, Inc.
I hereby acknowledge receipt of the materials covered by this manifest
except for any discrepancy noted below.
Address
901 East Springfield Road
High Point, NC 27263
signature Receipt Date
Discrepancies / Routing Codes / Handing Methods
Facility or
EPA ID No.
NCO991302669
a.
Phone
[phone]
b.
Contact
gill Hunter
C.
ORIGINAL - Facility Retain COPY 2 - Return to Generator COPY 3 - Transporter Retain COPY 4 - Generator Retain

APPENDIX B
PHOTOGRAPHIC DOCUMENTATION

Photo 1. View of the UST site prior to abandonment activities.
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Photo 2. View of the UST interior prior to the removal of tank contents.

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Photo 3. View of the UST interior after the removal of UST contents and
pressure wash cleaning of the tank interior.
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Photo 4. View of the UST being filled with flowable fill cement slurry.

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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.

Beverly, Trudy
From: Beverly, Trudy
Sent: Thursday, June 22, 2023 6:52 AM
To: Damien Callaghan
Cc: Josiah Payne
Subject: RE: [External] Conditional NFA letter request - Patricia Cowden Boyd Revocable Trust Property,
Incident #49046
Received.
Trudy
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Trudy Beverly, L.G.
Hydrogeologist, Division of Waste Management
North Carolina Department of Environmental Quality
UST Section, Mooresville Regional Office
704.235.2182 (Office)
Trudy. BeverlyL&deq.nc.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:Hdeg.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:
https://deg.nc.gov/about/divisions/waste-management/waste-management-rules-data/waste-mana eg ment- ig s=mates
File Review Procedures:
https: //deq.nc. gov/about/divisions/waste-management/ust/file-review-procedures#mooresville-regional-office
ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche):
https://deq.nc.gov/about/divisions/waste-manaizement/laserfiche
Document Submittal & UST File Names for Laserfiche Policies:
https://files.nc.¢ov/ncdea/Waste%20Mana¢ement/D WM/UST/W hatsNew/Final-Electronic-Document-Submittal-Policv.ndf
https:Hfiles.nc.gov/ncdeq/Waste%20Management/DWM/UST/Corrective%2OAction/UST%20file°/a20names°/`20for%2OLaserfiche.docx
From: Damien Callaghan <[e-mail]>
Sent: Thursday, June 22, 2023 6:25 AM
To: Beverly, Trudy <[e-mail]>
Cc: Josiah Payne <[e-mail]>
Subject: [External] Conditional NFA letter request - Patricia Cowden Boyd Revocable Trust Property, Incident #49046
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hi Trudy
The UST at this site was abandoned on June 14, 2023. I've attached a copy of our abandonment report. Could you send
Josiah and myself a copy of the conditional NFA letter so we can complete the public notice requirement?
Thanks

Damien Callaghan
Cedar Rock Environmental