WS-8525_37896_G_NORR_20230307_MMPE&Sampling

North Carolina Department of Environmental Quality | Division of Waste Management
Guilford County Environmental Health | 400 West Market Street | Suite 300 |
Greensboro, NC 27401 | [phone]

March 7, 2023

Marcia Hawkins
Rex Oil Company
1000 Lexington Ave.
Thomasville, NC 27360

Re: Notice of Regulatory Requirements
15A NCAC 02L .0110(c) [High Risk]
Risk-based Assessment and Corrective Action
For Petroleum Underground Storage Tanks

Twin Roads Rex
1011 Liberty Road
Guilford County
Incident Number: 37896
Risk Classification: High
Ranking: H-622-D

Dear Ms. Hawkins:

The report received on September 29, 2022 has been reviewed by the UST Section, Division of Waste
Management, Winston-Salem Regional Office. The risk posed by the discharge or release at the subject site
is classified by the Department of Environmental Quality as high, as stipulated under Title 15A NCAC 02L
.0406. The land use at the site is classified as residential. Title 15A NCAC 02L .0407(a) requires you to
notify the Department of any changes that might affect the risk or land use classifications that have been
assigned.
The review indicates that corrective action is necessary to remediate environmental contamination. Title
15A NCAC 02L .0407(c) [High Risk] requires you to comply with the assessment and cleanup requirements
of Title 15A NCAC 02N .0706, Title15A NCAC 02L .0106(c), Title 15A NCAC 02L .0110, and Title 15A
NCAC 02L .0111. The following list details work being required by this Notice:
• Conduct one 96-hour Mobile Multi-Phase Extraction (MMPE) event to reduce light non-aqueous
phase liquid (LNAPL) and dissolved phase groundwater contamination.

• Complete a comprehensive groundwater sampling event, inclusive of monitoring wells and nearby
water supply wells (WSW-2, WSW-5, WSW-6, & WSW-15).

• Submit Groundwater Monitoring Report prepared in accordance with these requirements and the
most recent version of the UST Section Assessment Guidelines to this office within 90 days of this
Notice.
For additional reference, please refer to the most recent version of the Guidelines for Site Checks, Tank
Closures, and Initial Response and Abatement. Report requirements can be found in the most recent version
Page 2 of 2
37896
March 7, 2023

North Carolina Department of Environmental Quality | Division of Waste Management
Guilford County Environmental Health | 400 West Market Street | Suite 300 |
Greensboro, NC 27401 | [phone]

of the Comprehensive Appendices for Correction Guidelines. Reports must contain the information
specified in the report template presented in Appendix A of the Guidelines.
Failure to comply in the manner and time specified may result in the assessment of civil penalties
and/or the use of other enforcement mechanisms.
The Department of Environmental Quality requires that all work not determined to be an emergency
response or associated with risk assessment (i.e., the Limited Site Assessment Report, per Title 15A NCAC
02L .0405) must be preapproved if State Trust Fund reimbursement is anticipated. To comply with this
requirement, a completed Preapproval/Claim Authorization Form, encompassing the required remedial
activities, must be received in this office within 14 days of the date of this letter. Upon completion of the
preapproved activities, you should submit your claim promptly. Reimbursement funds are budgeted based
on completed preapprovals, but delays in reimbursement or even denial due to exceeding the statute of
limitations on claiming eligible costs can result where claims are not submitted immediately following work
completion.
Because a release or discharge has been confirmed, a Licensed Geologist or a Professional Engineer,
certified by the State of North Carolina, is required to prepare and certify all reports submitted to the
Department in accordance with 15A NCAC 02L .0103(e) and 02L .0111(e) if required.
If you have any questions regarding trust fund eligibility or reimbursement from the Commercial Leaking
Petroleum Underground Storage Tank Cleanup Fund, please contact the UST Section Trust Fund Branch
at [phone]. If you have any questions regarding the actions that must be taken or the rules mentioned
in this letter, please contact Jordan Lerew at [phone] or at the address listed below.

Sincerely,

James W. Brown
Regional Supervisor
Winston-Salem Regional Office
UST Section, Division of Waste Management, NCDEQ

cc: Guilford County Department of Health and Human Services
Rae Brown, Geological Resources, Inc., [e-mail]