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Home My WebLink AboutNC0001422_Revised Groundwater Monitoring Plan_20160808 4 PAT MCCRORY Governor IN DONALD R. VAN DER VAART ~ Secretary Water Resources ENVIRONMENTAL QUALITY S. JAY ZIMMERMAN Director August 8, 2016 CERTIFIED MAIL7015 1520 0000 7838 2388 RETURN RECEIPT REQUESTED Allen A. Clare Duke Energy, Inc. L. V. Sutton Energy Complex 801 Sutton Steam Plant Road Wilmington,NC 28401 Subject: Revised Groundwater Monitoring Plan for NPDES Permit NC0001422 L. V. Sutton Energy Complex Dear Mr. Clare: Attached is the revised Groundwater Monitoring Plan for the subject facility. The Division of Water Resources has revised section 3(1) to allow for a 60-day submittal period of the compliance well testing results. If you have any questions, please contact the DWR's Wilmington Regional Office at 910-796-7215. Sincerely, Debra J. Watts, Supervisor AFO and Groundwater Protection Branch Water Quality Regional Operations Section Enclosure: Groundwater Monitoring Plan(8/8/16) cc: WIRO WQROS(w/enclosure) Sergei Chernikov-DWR Complex NPDES Permitting Unit(w/enclosure) John Toepfer—Duke Energy(410 South Wilmington Street/NC15,Raleigh,NC 27601) (w/enclosure) WQROS Central File(w/enclosure) State of North Carolina I Environmental Quality I Water Resources 1611 Mail service Center I Raleigh,North Carolina 27699-1611 919 707 9000 4 • GROUNDWATER MONITORING PLAN The permittee shall conduct groundwater monitoring as may be required to determine the compliance of this NPDES pennitted facility with the current groundwater Standards found under 15A NCAC 2L.0200. 1. WELL CONSTRUCTION a. Monitoring wells shall be constructed in accordance with 15A NCAC 02C .0108 (Standards of Construction for Wells Other than Water Supply) and any other jurisdictional laws and regulations pertaining to well construction. b. Monitoring wells must be constructed by a North Carolina Certified Well Contractor, the property owner, or the property lessee according to General Statutes 87-98.4.If the construction is not performed by a certified well contractor, the property owner or lessee, provided they are a natural person, must physically perform the actual well construction activities. c. Within 30 days of completion of well construction,a completed Well Construction Record(Form GW-1) must be submitted for each compliance monitoring well to Division of Water Resources, Water Quality Regional Operations Section (WQROS), 1636 Mail Service Center,Raleigh,NC 27699-1636. d. The Wilmington Regional Office, telephone number (910) 796-7215, shall approve the location of new compliance monitoring wells prior to installation. The regional office shall be notified at least 48 hours prior to the construction of any compliance monitoring well and such notification to the WQROS regional supervisor shall be made from 8:00 a.m. until 5:00 p.m. on Monday through Friday,excluding State Holidays. e. All monitoring wells shall be regularly maintained. Such maintenance shall include ensuring that the well caps are rust-free and locked at all times,the outer casing is upright and undamaged, and the well does not serve as a conduit for contamination. f. If the Permittee intends to abandon a compliance monitoring well either temporarily or permanently, the Permittee shall justify the abandonment and request approval from the WQROS Regional Office within 30 business days prior to initiating abandonment procedures. g. Monitoring wells shall be abandoned in accordance with 15A NCAC 02C .0113 (Abandonment of Wells). Within 30 days of completion of well abandonment, a completed Well Abandonment Record(Form GW-30)must be submitted for each monitoring well to WQROS, 1636 Mail Service Center,Raleigh,NC 27699-1636. 2. MAPS a. Updated maps shall be provided within 60 days when any of the following occur. i. Compliance monitoring wells are added or deleted from the plan. ii. The facility operation changes that would require a change in the waste boundary,compliance boundary,or property line. b. If the map is updated,the Permittee shall submit two original copies of a site map with an appropriate scale to easily identify all features overlaid on the most recent aerial photograph. At a minimum, the map shall include the following information: i. The location and identity of each monitoring well. ii. The location of major components of the waste disposal system. iii. The location of property boundaries within 500 feet of the disposal areas. iv. The elevation of the top of the well casing(i.e., measuring point)relative to a common datum. vi. The depth of water below the measuring point at the time the measuring point is established. NC0001422—Sutton Groundwater Monitoring Plan Page 1 of 3 August 8,2016 4 MONITORING PARAMETERS FREQUENCY WELLS Laboratory Parameters Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium MW-SC,MW-7C, Cobalt Chromium Copper Iron MW-11,MW-12, Lead Magnesium Manganese Molybdenum MW-19,MW-21C, Mercury Nickel Potassium Selenium MW-22B,MW-22C, MW-23B,MW-23C, Sodium Strontium Thallium Vanadium MW-24R-B,MW-24R-C, Zinc Chloride Sulfate Alkalinity March,June, MW-27B,MW-28B, Total Dissolved Total October MW-28C,MW-31C, Bicarbonate Carbonate Solids Suspended MW-32C,MW-33C, Solids MW-37B,MW-37C Field Parameters Turbidity pH Temperature Specific Conductance Dissolved Oxidation Oxygen Reduction Water level Potential NC0001422—Sutton Groundwater Monitoring Plan Page 3 of 3 August 8,2016