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Home My WebLink AboutNC0003425_Compliance Evaluation Inspection_20221116 North Carolina Department of Environmental Quality Division of Water Resources Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609 919.791.4200 November 16, 2022 Jessica Bednarcik Duke Energy Progress LLC 526 S. Church Street-Ec13k Charlotte, NC 28201-1002 Subject: NPDES Compliance Evaluation Inspection Roxboro Steam Electric Power Plant NPDES Permit No. NC0003425 Person County Dear Ms. Bednarcik: On November 9, 2022, Stephanie Goss, Timothy Clark, and Jim Westcott of the Raleigh Regional Office (RRO), conducted an inspection at the subject facility. The cooperation of Robert Howard, Kevin Clayton and Ryan Enoch was appreciated. Findings during the inspection were as follows: 1. The current NPDES permit was issued effective August 1, 2021 and expires on June 30, 2025. 2. The Mayo Steam Electric Generating Plant is classified PC-1 and WW-2 and is permitted to discharge wastewater from the cooling towers and circulating water system and discharged directly into Hyco Lake via Outfall 001 and the ash pond via Outfall 002, Outfall 003, Outfall 006 (with wastewater from a variety of sources drained into Internal Outfalls 002, 005, 008, 009 010, 011, 012A, 012B, and 012C). 3. The plant discharges to receiving waters designated as Hyco Lake, classified as Class B, WS-V waters in the Roanoke River Basin. 4. A review of discharge monitoring report (DMR) data for the period August 2021 through October 2022 showed all required monitoring was performed and that the facility complied with all permit limits. 5. A cursory review of laboratory and DMR data for December 2021 and April 2022 showed consistent reporting of results. 6. A cursory review of calibration logs showed acceptable calibration for the on-site parameters pH, turbidity, and temperature. 7. All domestic wastewater is treated by a package plant with chlorine tablet disinfection. The effluent from the package plant discharges to Hyco Reservoir via Outfall 003. DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CE0FE0C26 North Carolina Department of Environmental Quality Division of Water Resources Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609 919.791.4200 Page 2 of 2 8. The inspector observed all the outfalls except Internal Outfall 012A because it has not been built at the time of the inspection. No issues were found. 9. The ORC maintains a daily logbook which contains data such as the package plant observations. 10. The right of way to the outfalls were well maintained. No visible impacts were observed to Hyco Reservoir at Outfall 002 and 003. The facility is compliant with the NPDES permit conditions as a result of this inspection. If you have questions concerning this report, please contact Stephanie Goss at 919-791-4256 or stephanie.goss@ncdenr.gov. Sincerely, Vanessa E. Manuel, Assistant Regional Supervisor Water Quality Regional Operations Section Raleigh Regional Office Division of Water Resources, NCDEQ cc: Laserfiche DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CE0FE0C26 EPA United States Environmental Protection Agency Washington, D.C. 20460 Water Compliance Inspection Report Form Approved. OMB No. 2040-0057 Approval expires 8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 N 52 NC0003425 22/11/09 C S31112171819 20 21 66 Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved------------------- N67707172 73 74 75 80 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) Roxboro Steam Electric Power Plant 1700 Dunnaway Rd Semora NC 27343 Entry Time/Date Permit Effective Date Exit Time/Date Permit Expiration Date 10:00AM 22/11/09 21/08/01 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Kevin Danny Clayton/ORC/336-330-2055/ Other Facility Data 12:30PM 22/11/09 25/06/30 Name, Address of Responsible Official/Title/Phone and Fax Number William J Thacker,1700 Dunnaway Rd Semora NC 27343/Plant Manager/336-597-6101/ Contacted No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Operations & Maintenance Records/Reports Self-Monitoring Program Facility Site Review Effluent/Receiving Waters Laboratory Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s)Agency/Office/Phone and Fax Numbers Date Stephanie Goss DWR/RRO WQ/919-791-4200/ Timothy Clark DWR/RRO WQ/919-791-4234/ James Westcott DWR/RRO WQ/919-791-4247/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page#1 11/16/2022 DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CE0FE0C26 11/17/2022 NPDES yr/mo/day 22/11/09 Inspection Type C3111218 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) NC0003425 17 Page#2 DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CE0FE0C26 Permit:NC0003425 Inspection Date:11/09/2022 Owner - Facility: Inspection Type: Roxboro Steam Electric Power Plant Compliance Evaluation Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new application? Is the facility as described in the permit? # Are there any special conditions for the permit? Is access to the plant site restricted to the general public? Is the inspector granted access to all areas for inspection? Comment: Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? Is all required information readily available, complete and current? Are all records maintained for 3 years (lab. reg. required 5 years)? Are analytical results consistent with data reported on DMRs? Is the chain-of-custody complete? Dates, times and location of sampling Name of individual performing the sampling Results of analysis and calibration Dates of analysis Name of person performing analyses Transported COCs Are DMRs complete: do they include all permit parameters? Has the facility submitted its annual compliance report to users and DWQ? (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? Is the ORC visitation log available and current? Is the ORC certified at grade equal to or higher than the facility classification? Is the backup operator certified at one grade less or greater than the facility classification? Page#3 DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CE0FE0C26 Permit:NC0003425 Inspection Date:11/09/2022 Owner - Facility: Inspection Type: Roxboro Steam Electric Power Plant Compliance Evaluation Record Keeping Yes No NA NE Is a copy of the current NPDES permit available on site? Facility has copy of previous year's Annual Report on file for review? Comment: Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? Are the receiving water free of foam other than trace amounts and other debris? If effluent (diffuser pipes are required) are they operating properly? Comment: Bar Screens Yes No NA NE Type of bar screen a.Manual b.Mechanical Are the bars adequately screening debris? Is the screen free of excessive debris? Is disposal of screening in compliance? Is the unit in good condition? Comment: Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? Is the site free of excessive buildup of solids in center well of circular clarifier? Are weirs level? Is the site free of weir blockage? Is the site free of evidence of short-circuiting? Is scum removal adequate? Is the site free of excessive floating sludge? Is the drive unit operational? Is the return rate acceptable (low turbulence)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately ¼ of the sidewall depth) Comment: Page#4 DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CE0FE0C26 Permit:NC0003425 Inspection Date:11/09/2022 Owner - Facility: Inspection Type: Roxboro Steam Electric Power Plant Compliance Evaluation Secondary Clarifier Yes No NA NE Disinfection-Tablet Yes No NA NE Are tablet chlorinators operational? Are the tablets the proper size and type? Number of tubes in use?1 Is the level of chlorine residual acceptable? Is the contact chamber free of growth, or sludge buildup? Is there chlorine residual prior to de-chlorination? Comment: Laboratory Yes No NA NE Are field parameters performed by certified personnel or laboratory? Are all other parameters(excluding field parameters) performed by a certified lab? # Is the facility using a contract lab? # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees? Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? Comment: Effluent Sampling Yes No NA NE Is composite sampling flow proportional? Is sample collected below all treatment units? Is proper volume collected? Is the tubing clean? # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type representative)? Comment: Aeration Basins Yes No NA NE Mode of operation Type of aeration system Page#5 DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CE0FE0C26 Permit:NC0003425 Inspection Date:11/09/2022 Owner - Facility: Inspection Type: Roxboro Steam Electric Power Plant Compliance Evaluation Aeration Basins Yes No NA NE Is the basin free of dead spots? Are surface aerators and mixers operational? Are the diffusers operational? Is the foam the proper color for the treatment process? Does the foam cover less than 25% of the basin’s surface? Is the DO level acceptable? Is the DO level acceptable?(1.0 to 3.0 mg/l) Comment: Page#6 DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CE0FE0C26