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HomeMy WebLinkAboutWI-28564_47809_G_NORR_20230124 North Carolina Department of Environmental Quality | Division of Waste Management Wilmington Regional Office | 127 Cardinal Drive Extension | Wilmington, NC 28405 | (910) 796-7215 January 24, 2023 RD White & Sons, Inc. Mr. Robert H. White, Registered Agent PO Box 40 Shallotte, NC 28459 Re: Notice of Regulatory Requirements – 2nd REQUEST for Information 15A NCAC 2L .0407(d) [Intermediate Risk] Risk-based Assessment and Corrective Action For Petroleum Underground Storage Tanks R D White & Sons, Inc. 4541 White Street, Shallotte, Brunswick County Incident Number: 47809 Risk Classification: Intermediate Ranking: I 085 D Dear Mr. White: As stated in the original Notice of Regulatory Request, dated February 17, 2022, the Limited Site Assessment (LSA) Report received on September 25, 2021 and the sample results received on February 7, 2022 have been reviewed by the UST Section, Division of Waste Management, Wilmington Regional Office. After review, the subject incident has been determined by the Department, in response to North Carolina General Statute (NCGS) 143-215.94E(e4), to be of sufficiently high priority to allow funding by the State Trust Fund Program. Therefore, you are directed to proceed with assessment or remediation activities as required in this Notice of Regulatory Requirements dated January 24, 2023. Specifically, you are required to complete and submit a Risk Assessment Report to the Division within 60 days of the date of this letter. The additional Assessment Report supplements the LSA through the assessment of groundwater characteristics and the risk to nearby receptors. Specifically, at a minimum, the Risk Assessment Report should include:  The installation of three horizontal extent monitoring wells and one vertical extent monitoring well. One monitoring well shall be installed upgradient of the source of contamination and two monitoring wells shall be installed downgradient of the source of contamination, as best as can be determined, and located such that groundwater flow direction and hydraulic gradient may accurately be determined. The vertical extent monitoring well shall be installed immediately downgradient of the source area of contamination, as best as can be determined. Note, the vertical extent monitoring well must not connect aquifers.  The analysis of representative soil samples collected during the construction of the monitoring wells. One soil sample must be collected in the unsaturated zone and one in the smear/saturated zone from suspected worst-case locations exhibiting visible contamination or elevated levels of volatile organic compounds based on field screening techniques. Only the suspected most contaminated soil sample in each zone from each boring should be submitted for laboratory analysis using the EPA 8015B TPH (or equivalent) appropriate for the fuel types suspected in the release.  The collection of groundwater samples from the new monitoring wells, analyzed by the appropriate method(s) for the constituents relevant to the release.  The survey of all monitoring wells and collection of potentiometric data for the completion of a potentiometric surface / groundwater elevation and flow map.  The completion of one aquifer slug test in a representative well to provide a calculation of hydraulic conductivity, transmissivity, and linear groundwater velocity. Title 15A NCAC 2L .0407(d) [Intermediate Risk] requires you to comply with the assessment and cleanup requirements of Title 15A NCAC 2N .0706 and Title15A NCAC 2L .0106(c) and 2L .0106(g). 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. 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 2L .0103(e) and 2L .0111(b). Effective October 1, 2004, the Department requires that all work following the submittal of the Limited Site Assessment Report (Title 15A NCAC 2L .0405) 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 lengthy delays in reimbursement can occur if claims are not submitted immediately following work completion Please note that before you sell, transfer, or request a “No Further Action” determination for a property that has not been remediated to below “unrestricted use” standards, you must file a Notice of Residual Petroleum ("Notice") with the Register of Deeds in the county where the property is located (NCGS 143B-279.9 and 143B-279.11). 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 any questions regarding the actions that must be taken or the rules mentioned in this letter, please contact me at the address or telephone number listed below. Sincerely, Liz Price Hydrogeologist Wilmington Regional Office UST Section, Division of Waste Management, NCDEQ cc: Brunswick County Health Department Henry Nemargut, via email correspondence RD White & Sons via email - robby@rdwhiteandsons.com Wilmington Regional Office | 127 Cardinal Drive Ext| Wilmington, NC 28405 | (910) 796-7215