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Home My WebLink AboutNCS000548_Duke Marshall Steam Station IR_20260325 JOSH STEIN Mm Governor D.REID WILSON - Secretary �, = WILLIAM E.TOBY VINSON,JR. Director NORTH CAROLINA Environmental Quality March 25, 2026 Duke Energy Carolinas LLC Attention: Zachary Hall 525 S Tryon Street Charlotte, NC 28202 Mail Code: DEP-36 A Subject: Compliance Evaluation Inspection Marshall Steam Station Catawba County, North Carolina NPDES Permit Number—NCS000548 Dear Mr. Hall, Enclosed, please find a copy of the Compliance Evaluation Inspection Report for the inspection conducted at Marshall Steam Station on March 12, 2026. As a result of the inspection, the site was found to be compliant with the conditions outlined in the NCS000548 permit. The report provides detailed findings, including additional comments and observations made during the inspection. While the report is intended to be self-explanatory, please do not hesitate to reach out if you have any questions or need further clarification. Jason Moffitt may be reached at (336) 776-9723 or via email at Jason.Moffitt@deq.nc.gov. As part of this inspection,a copy of your facility's permit summary report is enclosed.This summary reflects the current permit and contact information on file with our Stormwater Program. Please review it carefully and verify that all listed contacts and facility details are accurate. To update any information, please visit the Stormwater Program website listed below: https://www.deq.nc.gov/about/divisions/energy-mineral-and-land-resources/stormwater/stormwater- program/npdes-industrial-program The"How to Update Permit Data"section of the website includes access instructions and forms for updating your permit contact information. Questions regarding permit updates should be directed toward our North Carolina Department of Environmental Quality I Division of Energy,Mineral,and Land Resources Mooresville Regional Office 1 610 East Center Avenue,Suite 3011 Mooresville,North Carolina 28115 704-235-2100 Duke Energy Carolinas LLC NPDES Permit: NCS000548 March 25, 2026 Page 2 of 2 Stormwater Program staff at (919) 707-9220. Maintaining accurate permit information ensures proper communication regarding stormwater compliance requirements. Sincerely, DocuSigned by: 4 4A35D6602602438... Jerry W. Eplin, PE Regional Engineer Land Quality Section Encl: Inspection Report NPDES Stormwater Permit Summary Compliance Inspection Report Permit:NCS000548 Effective: 04/01/21 Expiration: 03/31/26 Owner: Duke Energy Carolinas LLC SOC: Effective: Expiration: Facility: Marshall Steam Station County: Catawba NC Hwy 150 Region: Mooresville Terrell NC 28682 Contact Person:Robert Wylie Title: Environmental Project Manager Phone: 704-382-4669 Directions to Facility: System Classifications: SWNC, Primary ORC: Certification: Phone: Secondary ORC(s): On-Site Representative(s): Related Permits: NC0004987 Duke Energy Carolinas LLC-Marshall Steam Station Inspection Date: 03/12/2026 Entry Time 10:30AM Exit Time: 01:10PM Primary Inspector:Jason Moffitt Phone: 336-776-9800 Secondary Inspector(s): Michael Woodring Reason for Inspection: Routine Inspection Type: Compliance Evaluation Permit Inspection Type: Stormwater Discharge, Individual Facility Status: 0 Compliant ❑ Not Compliant Question Areas: Storm Water (See attachment summary) Page 1 of 4 Permit: NCS000548 Owner-Facility:Duke Energy Carolinas LLC Inspection Date: 03/12/2026 Inspection Type:Compliance Evaluation Reason for Visit: Routine Inspection Summary: On March 12, 2026,this site was inspected by Land Quality Staff of the Winston-Salem and Mooresville Regional Offices to evaluate compliance with the NPDES Industrial Stormwater Program, documentation, and implementation of the Stormwater Pollution Prevention Plan (SWPPP). The facility was found to be in compliance at the time of inspection.To help maintain compliance moving forward, the following recommendations are provided: 1.Copies of the SWPPP should be maintained on-site and be available to the Division upon request. These records or copies shall be maintained for a period of at least five (5)years. This period may be extended at the request of the Director at any time in accordance with 40 CFR 122.41. Records provided showed the SWPPP was last updated and reviewed in July of 2025. 2. All aspects of the SWPPP should be reviewed and updated on an annual basis. The permittee shall amend the SWPPP whenever there is a change in design, construction, operation, site drainage, maintenance, or configuration of the physical features which may have a significant effect on the potential for the discharge of pollutants to surface waters. 3. Qualitative monthly monitoring reports were provided for review during the inspection. Records have been reviewed by Lar Quality Staff of the WSRO and MRO for the past 5 years and found to be complaint with requirements including monitoring and documentation for the SWPPP. 4. Documents were observed by Land Quality Staff of the WSRO and MRO of containment spaces on site for vehicle maintenance areas, categorized into tables labeling the total amounts of usage of new oils and hydraulic fluids actively maintained. Recommendations were made by DEMLR to continue to maintain records and use of these areas on a monthly basis, and certify the amounts stored annually. 5. Continue implementing employee training and provide on an annual basis for facility personnel responsible for operations that have the potential to contaminate stormwater runoff. The training shall be documented by the date, signature, and printed or typed name of each employee trained. Signatures may be original or electronic. Overall Recommendation: The facility is currently compliant. Please continue to implement the above recommendations and follow all rules and regulations in accordance with NPDES Individual Industrial Permit NCS000548 to support ongoing compliance. If you have any questions,feel free to contact me via email at jason.moffitt@deq.nc.gov or by phone at 336-776-9723. Page 2 of 4 Permit: NCS000548 Owner-Facility:Duke Energy Carolinas LLC Inspection Date: 03/12/2026 Inspection Type:Compliance Evaluation Reason for Visit: Routine Stormwater Pollution Prevention Plan Yes No NA NE Does the site have a Stormwater Pollution Prevention Plan? 0 ❑ ❑ ❑ #Does the Plan include a General Location (USGS)map? 0 ❑ ❑ ❑ #Does the Plan include a"Narrative Description of Practices"? 0 ❑ ❑ ❑ #Does the Plan include a detailed site map including outfall locations and drainage areas? 0 ❑ ❑ ❑ #Does the Plan include a list of significant spills occurring during the past 3 years? 0 ❑ ❑ ❑ #Has the facility evaluated feasible alternatives to current practices? 0 ❑ ❑ ❑ #Does the facility provide all necessary secondary containment? 0 ❑ ❑ ❑ #Does the Plan include a BMP summary? 0 ❑ ❑ ❑ #Does the Plan include a Spill Prevention and Response Plan (SPRP)? 0 ❑ ❑ ❑ #Does the Plan include a Preventative Maintenance and Good Housekeeping Plan? 0 ❑ ❑ ❑ #Does the facility provide and document Employee Training? 0 ❑ ❑ ❑ #Does the Plan include a list of Responsible Party(s)? 0 ❑ ❑ ❑ #Is the Plan reviewed and updated annually? 0 ❑ ❑ ❑ #Does the Plan include a Stormwater Facility Inspection Program? 0 ❑ ❑ ❑ Has the Stormwater Pollution Prevention Plan been implemented? 0 ❑ ❑ ❑ Comment: See Summary. Qualitative Monitoring Yes No NA NE Has the facility conducted its Qualitative Monitoring? 0 ❑ ❑ ❑ Comment: Qualitative monthly monitoring reports were provided for review by Duke Energy representatives during the time of inspection. Records have been reviewed by Land Quality Staff of the WSRO and MRO for the past 5 years and found to be complaint with requirements including monitoring and documentation for the SWPPP. Analytical Monitoring Yes No NA NE Has the facility conducted its Analytical monitoring? 0 ❑ ❑ ❑ #Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? 0 ❑ ❑ ❑ Comment: Documents were observed by Land Quality Staff of the WSRO and MRO of containment spaces on site for vehicle maintenance areas, categorized into tables labeling the total amounts of usage of new oils and hydraulic fluids actively maintained. Permit and Outfalls Yes No NA NE #Is a copy of the Permit and the Certificate of Coverage available at the site? 0 ❑ ❑ ❑ #Were all outfalls observed during the inspection? 0 ❑ ❑ ❑ #If the facility has representative outfall status, is it properly documented by the Division? ❑ 0 ❑ ❑ #Has the facility evaluated all illicit(non stormwater)discharges? ❑ ❑ ❑ Page 3 of 4 Permit: NCS000548 Owner-Facility:Duke Energy Carolinas LLC Inspection Date: 03/12/2026 Inspection Type:Compliance Evaluation Reason for Visit: Routine Comment: Stormwater runoff has been redirected from outfall SWO12A in December of 2020 through regrading of the former laydown yard drainage area and abandonment of the single collection box. Records were received from Duke Energy for the removal request of this outfall from the permit on October 02, 2025. Sampling from stormwater discharge outfall (SDO) SWO08 collection method has been moved upgradient of the original discharge pipe due to inability to collect samples from the riverbank. Samples shall be collected at all stormwater discharge outfalls (SDO)that discharge stormwater associated with industrial activity. If DEMLR has issued a representative outfall status approval letter, then the oermittee shall collect samples from all SDOs in accordance with the ROS approval letter. Please ensure records correspond with Division of Energy, Minerals, and Land Resources for monitoring points specified in this General Permit, and any changes have written notification to and approval by our office. Page 4 of 4 NC Division of Energy, Mineral and Land Resources NPDES Stormwater Permit Summary NC DEMLR has the following information in our Permit Database for your permit as of 3/24/2026. Permit Number: NCS000548 Permit Status: Active Permit Type: Stormwater Discharge, Individual Facility Name: Marshall Steam Station Facility Addressi: NC Hwy 150 Facility Address2: City,State&Zip: Terrell, NC 28682 Owner Information Details: MUST submit a Change of Name/Ownership form to DEMLR to make any changes to this Owner information. (Click Here for "Change of Name/Ownership"Form) Owner Name: Duke Energy Carolinas LLC Owner Type: Non-Government Owner Type Group: Organization *** Legally Responsible for Permit *** (Responsible corporate officer/principle executive officer or ranking elected official/general partner or proprietor; or any other person with delegated signatory authority from the legally responsible person.) Owner Affiliation: Zachary Hall Title: Addressi: 525 S Tryon St Address2: Mail Code D E P-36 A City,State&Zip: Charlotte, NC 28202 Work Phone: 980-373-8166 Fax: Email Address: zachary.hall@duke-energy.com *** Permit Annual Fee Billing *** Billing Month: February Invoice Number Invoice Date Invoice Due Date Invoice Amount Invoice Status Owner Contact Person(s) 3/25/2026 Page 1 NC Division of Energy, Mineral and Land Resources NPDES Stormwater Permit Summary NC DEMLR has the following information in our Permit Database for your permit as of 3/24/2026. Contact Name Title Address Phone Fax Email Henry A Botkins, 1385 Dukeville Rd, Salisbury, NC 28146 704-630-3019 Jr Ronnie 175 Steam Plant Rd, Mt Holly, NC 28120 812-554-1155 Goodman Lori Tollie 2500 Fairfax Rd, Greensboro, NC 27407 336-854-4916 lori.tollie@duke-ene rgy.com Steve Cahoon 3000 Spring Forest Rd, Raleigh, NC 919-546-7457 919-546-4409 steve.cahoon@duk 27616 e-energy.com Gregory 3195 Pine Hall Rd, Belews Creek, NC 704-264-9879 gregory.mcelmurry McElmurry 27009 @duke-energy.com Jonathan Wise 400 S Church St, Charlotte, NC 28202 980-373-8631 Cynthia Winston 410 S Wilmington St, Raleigh, NC 27602 919-546-5538 cynthia.winston@d uke-energy.com Randy N Veltri 518 Cone Mill Ct, Matthews, NC 28104 704-577-5807 Elizabeth Glenn 526 S Chruch St, Charlotte, NC 980-373-0530 elizabeth.glenn@du 28201-1002 ke-energy.com Kevin S Johnson 526 S Chruch St, Charlotte, NC 704-382-0961 ksjohnson@duke-e 28201-1002 nergy.com W J McCabe 526 S Chruch St, Charlotte, NC 28201-1002 Mayur Patel 526 S Church St, Ec-I 08-Q, Charlotte, 704-382-2381 mayur.patel@duke- NC 28202 energy.com Rodney Gaddy VP Administrative 550 S Tryon St, Charlotte, NC 28202 704-382-5591 Rodney.Gaddy@du Services ke-energy.com Eric Rouse 550 S Tryon St, Charlotte, NC 28202 980-373-2436 Steve D Hodges 573 Duke Power Rd, Mooresboro, NC 828-657-2000 828-657-2060 28114 Paul Draovitch PO Box 1006, Mail Code E C 13 K, 980-373-0408 Paul.Draovitch@du Charlotte, NC 28201-1006 ke-energy.com Travis Sinclair PO Box 1007, Charlotte, NC 704-382-6920 704-382-8614 travis.sinclair@duke 28201-1007 -energy.com Robert E Taylor Project Manager, St-30d PO Box 1007, Charlotte, NC 704-382-6227 retaylor@duke-ene Corporate Real Estate 28201 rgy.com Services Leo A Furlong, III Std-30 PO Box 1007, Charlotte, NC 980-373-4911 704-382-4119 leo.furlong@duke-e 28201 nergy.com Facility Contact Person(s) Contact Name Title Address Phone Fax Email Rick Roper Station Manager 8320 E NC 150 Hwy,Terrell, NC 28682 828-478-7600 Permit Contact Person(s) Contact Name Title Address Phone Fax Email Scott La Sala 8329 E NC Hwy 150,Terrell, NC 28682 828-478-7820 Joseph.LaSala@duk e-energy.com Robert Wylie Environmental Project PO Box 1006, Mail Code E C 13 K, 704-382-4669 Robert.Wylie@duke- Manager Charlotte, NC 28201-1006 energy.com Permit Billing Contact(s) Contact Name Title Address Phone Fax Email Cynthia Winston 410 S Wilmington St, Raleigh, NC 27602 919-546-5538 cynthia.winston@du ke-energy.com 3/25/2026 Page 2 NC Division of Energy, Mineral and Land Resources NPDES Stormwater Permit Summary NC DEMLR has the following information in our Permit Database for your permit as of 3/24/2026. Person(s) with Delegated Signatory Authority Type Contact Name Title Address Phone Fax Email Person(s) with Electronic Signature Authority Type Contact Name Title Address Phone Fax Email Outfalls 3/25/2026 Page 3 NC Division of Energy, Mineral and Land Resources NPDES Stormwater Permit Summary NC DEMLR has the following information in our Permit Database for your permit as of 3/24/2026. Outfall #: 002 Outfall Description: graveled storage area, into intake canal Outfall Lattitude: 35.605000 Outfall Longitude: -80.959720 Represented by Outfall: Stormwater: 100 % Industrial: Stream Waterbody Basin Waterbody Name Index Number Classification Catawba CATAWBA RIVER(Lake Norman below elevation 760) 11-(75) WS-IV,B;CA Outfall #: 003 Outfall Description: graveled storage area, into intake canal Outfall Lattitude: 35.603060 Outfall Longitude: -80.960560 Represented by Outfall: Stormwater: 100 % Industrial: Stream Waterbody Basin Waterbody Name Index Number Classification Catawba CATAWBA RIVER(Lake Norman below elevation 760) 11-(75) WS-IV,B;CA Outfall #: 007 Outfall Description: switchyard &railyard, into intake canal Outfall Lattitude: 35.599440 Outfall Longitude: -80.964170 Represented by Outfall: Stormwater: 100 % Industrial: Stream Waterbody Basin Waterbody Name Index Number Classification Catawba CATAWBA RIVER(Lake Norman below elevation 760) 11-(75) WS-IV,B;CA Outfall #: 008 Outfall Description: east of powerhouse, into intake canal Outfall Lattitude: 35.598330 Outfall Longitude: -80.963890 Represented by Outfall: % Stormwater: % Industrial: Stream Waterbody Basin Waterbody Name Index Number Classification Catawba CATAWBA RIVER(Lake Norman below elevation 760) 11-(75) WS-IV,B;CA Outfall #: 011 Outfall Description: water tank area, into discharge canal Outfall Lattitude: 35.595280 Outfall Longitude: -80.964720 Represented by Outfall: % Stormwater: 100 % Industrial: Stream Waterbody Basin Waterbody Name Index Number Classification Catawba CATAWBA RIVER(Lake Norman below elevation 760) 11-(75) WS-IV,B;CA 3/25/2026 Page 4 NC Division of Energy, Mineral and Land Resources NPDES Stormwater Permit Summary NC DEMLR has the following information in our Permit Database for your permit as of 3/24/2026. Outfall #: 012 Outfall Description: areas N &W of FGD, into intake canal Outfall Lattitude: 35.597500 Outfall Longitude: -80.963060 Represented by Outfall: Stormwater: 100 % Industrial: Stream Waterbody Basin Waterbody Name Index Number Classification Catawba CATAWBA RIVER(Lake Norman below elevation 760) 11-(75) WS-IV,B;CA Outfall #: 012A Outfall Description: FGD vegetated yard, into intake canal Outfall Lattitude: 35.598890 Outfall Longitude: -80.963060 Represented by Outfall: Stormwater: 100 % Industrial: Stream Waterbody Basin Waterbody Name Index Number Classification Catawba CATAWBA RIVER(Lake Norman below elevation 760) 11-(75) WS-IV,B;CA Outfall #: 022 Outfall Description: FGD access road area,to discharge canal Outfall Lattitude: 35.595560 Outfall Longitude: -80.964440 Represented by Outfall: Stormwater: 100 % Industrial: Stream Waterbody Basin Waterbody Name Index Number Classification Catawba CATAWBA RIVER(Lake Norman below elevation 760) 11-(75) WS-IV,B;CA Outfall #: 025 Outfall Description: Fill area, SW pond, ind. landfill Outfall Lattitude: 35.619170 Outfall Longitude: -80.960560 Represented by Outfall: Stormwater: 100 % Industrial: Stream Waterbody Basin Waterbody Name Index Number Classification Catawba CATAWBA RIVER(Lake Norman below elevation 760) 11-(75) WS-IV,B;CA Outfall #: 026 Outfall Description: SW basin draining 199 ac in NW of site Outfall Lattitude: 35.615000 Outfall Longitude: -80.961390 Represented by Outfall: % Stormwater: 100 % Industrial: Stream Waterbody Basin Waterbody Name Index Number Classification Catawba CATAWBA RIVER(Lake Norman below elevation 760) 11-(75) WS-IV,B;CA 3/25/2026 Page 5