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HomeMy WebLinkAboutWA-1121_13273_G_NORR_20221108_DW INSTALL ROY COOPER Governor ELIZABETH S. BISER Secretary MICHAEL SCOTT Director North Carolina Department of Environmental Quality | Division of Waste Management | UST Section Washington Regional Office | 943 Washington Square Mall | Washington, NC 27889 | (252) 946-6481 November 8, 2022 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) [High Risk] Risk-based Assessment and Corrective Action For Petroleum Underground Storage Tanks Hak’s Store 901 Washington St (NC Hwy 32), Plymouth, NC Washington County Incident Number: 13273 Risk Classification: High Ranking: H 0190 D Dear Mr. Simonsen: This Notice of Regulatory Requirement is a supplement to the Notice sent by the Underground Storage Tank (UST) Section, Division of Waste Management, Department of Environmental Quality (Department) on October 26, 2022, in response to the proposed corrective action alternative presented in the October 13, 2022, Ground Water Monitoring Report. As referenced in the prior Notice, the UST Section has evaluated the proposal and seeks additional information related to the site risk prior to authorizing a formal Corrective Action Feasibility Study for the various proposed injection compounds. To that end, the Department directs you to install a type III telescoping deep monitoring well between the core of the contaminant plume and the active Town of Plymouth - Public Water Supply Well #1 (screened from 146’ to 185’ below ground surface) located ~400’ north of the site. Please note that this supply well has been tracked as ‘PWS-2’ in the site reports owning to the presence of a closer supply well at the time the release was detected: Town of Plymouth - Public Water Supply Well #2, ~175’ east of the site, which was listed as ‘PWS-1’ due to proximity. This deep monitoring well should have an outer casing set into the first apparent confining or semi- confining layer encountered in the surficial aquifer, with the inner boring advanced until the top of the potential confining unit for the Castle Hayne aquifer is reached. The boring logs previously provided for deep monitoring well MW-31 indicate that a ‘gray silty stiff clay’ was reached at ~100’ below ground surface (bgs) at that location. Hydrogeologic logs from the Division of Water Resources Plymouth Station well (K 17A) and Plymouth Fertilizer Plant well (J 16N) project the start of the Castle Hayne Confining Unit to be between ~80 and 100’ bgs in this area. If possible, the installation and sampling of this deep well should be conducted along with the 1st quarter 2023 sampling event directed in the Department’s prior Notice, to be included in the same report requested for submittal no later than April 28, 2023. If additional time is needed to coordinate appropriate equipment for this drilling effort, please notify the Department of your intended schedule. Effective October 1, 2004, 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 2L .0405) must be preapproved if reimbursement from the Commercial Leaking Petroleum Underground Storage Tank Cleanup Fund (Trust Fund) 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 Trust Fund, please contact the Trust Fund Branch at (919) 707-8171. If you have questions regarding the information contained in this letter, please contact me at the address, telephone number, or email listed below. Sincerely, Jared M. Edwards Environmental Program Consultant - Washington Region UST Section, Division of Waste Management, NCDEQ (252) 948-3949 / jared.edwards@ncdenr.gov cc: Geological Resources, Inc. – William Regenthal, Ethan Rogerson (electronic copy) Washington Regional Office | 943 Washington Square Mall | Washington, NC 27889 | (252) 946-6481