Loading...
HomeMy WebLinkAboutWA-1141_13374_G_NORR_20200320_MRP RQST ROY COOPER Governor MICHAEL S. REGAN Secretary MICHAEL SCOTT Director State of North Carolina | Environmental Quality | Waste Management Washington Regional Office | 943 Washington Square Mall | Washington, NC 27889 | (252) 946-6481 March 20, 2020 North East Oil Company, Inc c/o Lars Simonsen, Registered Agent Post Office Box 848 Edenton, NC 27932 Re: Notice of Regulatory Requirements 15A NCAC 2L .0407(c) [Intermediate Risk] Risk-based Assessment and Corrective Action For Petroleum Underground Storage Tanks Gurganus Mobil 277 US Highway 64 West, Plymouth, NC Washington County Incident Number: 13374 Risk Classification: Intermediate Ranking: I 185 D Dear Mr. Simonsen: The UST Section, Division of Waste Management, Department of Environmental Quality (Department) is in receipt of the Soil Excavation and Ground Water Monitoring Report dated February 17, 2020, which documents the results of a targeted excavation in November 2019 and a limited ground water sampling event on January 27, 2020. The limited excavation targeted non-aqueous phase liquids (or NAPL) trapped in the soil above and just below the top of the water table in what is known as the ‘smear zone’. Approximately 736.14 tons of highly contaminated soil was removed during this event. The subsequent groundwater sampling event found no measurable NAPL in the replacement monitoring wells installed in the excavation footprint for the first time since April 2008. Sampling at each of the new wells did document concentrations of petroleum constituents dissolved in the groundwater above the cleanup standards defined in Title 15A of the North Carolina Administrative Code (NCAC) Subchapter 2L .0202. However, only MW-3R and MW-4R demonstrated dissolved concentrations at levels that were above the Intermediate Risk classification thresholds defined in Title 15A NCAC 2L .0406(2). As such, this site remains Intermediate Risk. A gauging and groundwater sampling event to evaluate NAPL rebound and/or dissolved phase concentrations for at least the four replacement wells should be scheduled in the 3rd quarter of 2020, with a report submitted no later than October 31, 2020. Effective October 1, 2004, the Department 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 2L .0405) must be preapproved if State Trust Fund reimbursement is anticipated. To comply with this requirement, a completed Preapproval/Claim Authorization Form encompassing the scope of work described above must be received in this office prior to the start of any tasks for which you intend to seek reimbursement. Upon completion of any 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 a failure to meet the statute of limitations on claiming a completed task can result if the work is not completed in a timely fashion or if claims are not submitted immediately following work completion. 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 (919) 707-8171. If you have questions regarding the information contained in this letter, please contact me at the address or telephone number listed below. Sincerely, Jared M. Edwards Hydrogeologist Washington Regional Office UST Section, Division of Waste Management, NCDEQ cc: North East Oil Co, Inc. - Mr. Lars Simonsen, Registered Agent (electronic copy) Geological Resources, Inc., Mr. William Regenthal (electronic copy) Washington Regional Office | 943 Washington Square Mall | Washington, NC 27889 | (252) 946-6481