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Home My WebLink AboutNC0020761_Compliance Evaluation Inspection_20211207DocuSign Envelope ID: AC89673E-BED1-4D63-82ED-D7BD5D3CEF38 United States Environmental Protection Agency EPA 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 1 21IIIIII Inspection 671 Code NPDES yr/mo/day Inspection IN I 2 I5 I 3 I NC0020761 111 121 21/12/07 117 Type 18 1 IIIIIIIIIII Inspector Fac Type 19 I S I 201 IIIIIIIIIII IIIIIII I IIIIII P6 Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved I 70I I 711 1 72 I N I 731 I 74 71 I I I I I I I I 180 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES Dermit Number) Thurman Street WWTP Thurman St North Wilkesboro NC 28659 Entry Time/Date 10:OOAM 21/12/07 Permit Effective Date 21/07/01 Exit Time/Date 12:45PM 21/12/07 Permit Expiration Date 26/06/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Scotty Dale Perry/ORC/336-838-5001/ Timothy Justin Shell/ORC/336-838-5001/ Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Scotty Dale Perry, //336-667-7129/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenar Records/Reports Sludge Handling DispoFacility Site Review Effluent/Receiving Wate 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 Patricia Lowery DWR/WSRO WQ/336-776-9691/ 12/10/2021 p- DocuSigned by: ALCia 9V19eAl Signature6oTManagement Q A Reviewer Agency/Office/Phone and Fax Numbers Date rDocuSigned by: T. 5A,acr 12/13/2021 145B49E225C94EA... EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 1 DocuSign Envelope ID: AC89673E-BED1-4D63-82ED-D7BD5D3CEF38 31 NPDES yr/mo/day NC0020761 111 121 21/12/07 I17 Inspection Type 18LI (Cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) On December 7, 2021, Tricia Lowery met with Scotty Perry (ORC) and Justin Shell (BORC) to perform Compliance Evaluation Inspection at Thurman Street WWTP (Permit #NC0020761). This inspection consisted of two parts: 1) in -office file review, and 2) on -site inspection of the treatment facility. Mr. Perry and Mr. Shell assisted with the in -office review, and escorted inspector through the facility during the on -site inspection. The attached EPA inspection form detail the areas that were evaluated with their respective comments. Overall, the facility is well maintained and operating satisfactory under permit requirements. Page# 2 DocuSign Envelope ID: AC89673E-BED1-4D63-82ED-D7BD5D3CEF38 Permit: NC0020761 Inspection Date: 12/07/2021 Owner - Facility: Thurman Street WWTP Inspection Type: Compliance Evaluation Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new MODE application? Is the facility as described in the permit? • ❑ ❑ ❑ # Are there any special conditions for the permit? El • El El Is access to the plant site restricted to the general public? • ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? • ❑ ❑ ❑ Comment: New permit issued and expires 6/30/2026. Facility had new permit on site and readily available to inspector. Record Keeping 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? Is a copy of the current NPDES permit available on site? Facility has copy of previous year's Annual Report on file for review? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: The facility is 2 MGD permitted flow, therefore no 24/7 operation is required. Review of the ORC visitation log books are satisfactory and meet permit requirements. Annual reports were readily available for inspector's review. Only one SSO for the reporting year. Page# 3 DocuSign Envelope ID: AC89673E-BED1-4D63-82ED-D7BD5D3CEF38 Permit: NC0020761 Inspection Date: 12/07/2021 Owner - Facility: Thurman Street WWTP Inspection Type: Compliance Evaluation Laboratory 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? Yes No NA NE • ❑ ❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Facility uses Meritech for Total Nitrogen, WET and Hardness testing. They have retained membership with Yadkin -Pee Dee River Basin Association to montior and test upstream and downstream locations as required in the permit. Operations & Maintenance 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: The facility is well maintained and in compliance with permit standards. Flow Measurement - Influent # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Facility meets permit requirements. Chart recorders are changed daily and kept/stored properly. Flow Measurement - Effluent # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ▪ ❑ ❑ ❑ Comment: Facility meets permit requirements. Chart recorders are changed daily and kept/stored properly. Pump Station - Influent Is the pump wet well free of bypass lines or structures? Is the wet well free of excessive grease? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 4 DocuSign Envelope ID: AC89673E-BED1-4D63-82ED-D7BD5D3CEF38 Permit: NC0020761 Inspection Date: 12/07/2021 Owner - Facility: Thurman Street WWTP Inspection Type: Compliance Evaluation Pump Station - Influent Yes No NA NE Are all pumps present? • ❑ ❑ ❑ Are all pumps operable? • ❑ ❑ ❑ Are float controls operable? • ❑ ❑ ❑ Is SCADA telemetry available and operational? ❑ ❑ • ❑ Is audible and visual alarm available and operational? • ❑ ❑ ❑ Comment: Facility meets permit requirements. Influent sampling is flow proportionate with 100m1 aliquots taken and each sampling interval. Facility does not utilize SCADA system, any alarms are sent directly by telephone system to operators (auto dialer). Bar Screens 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: Facility meets permit requirements. Grit Removal Type of grit removal a.Manual b.Mechanical Is the grit free of excessive organic matter? Is the grit free of excessive odor? # Is disposal of grit in compliance? Comment: Facility meets permit requirements. Primary Clarifier 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? Yes No NA NE • • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 5 DocuSign Envelope ID: AC89673E-BED1-4D63-82ED-D7BD5D3CEF38 Permit: NC0020761 Inspection Date: 12/07/2021 Owner - Facility: Thurman Street WWTP Inspection Type: Compliance Evaluation Primary Clarifier Is scum removal adequate? Is the site free of excessive floating sludge? Is the drive unit operational? Is the sludge blanket level acceptable? Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) Comment: Facility meets permit requirements. Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Surface 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/I) • ❑ ❑ ❑ Comment: Aeration basin did not exhibit any unusual color and had an 'earthy' odor. Lab results observed, along with visual inspection, indicates proper nitrification is occuring. Secondary Clarifier 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'/4 of the sidewall depth) Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Clarifiers did not exhibit excessive floating solids or indicate denitrification was occuring. Review of logs showed the average sludge blanket to be -2ft. Page# 6 DocuSign Envelope ID: AC89673E-BED1-4D63-82ED-D7BD5D3CEF38 Permit: NC0020761 Inspection Date: 12/07/2021 Owner - Facility: Thurman Street WWTP Inspection Type: Compliance Evaluation Secondary Clarifier Yes No NA NE Pump Station - Effluent Is the pump wet well free of bypass lines or structures? Are all pumps present? Are all pumps operable? Are float controls operable? Is SCADA telemetry available and operational? Is audible and visual alarm available and operational? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Facility meets permit requirements. Effluent sampling is flow proportionate with 100m1 aliquots taken and each sampling interval. Facility does not utilize SCADA system, any alarms are sent directly by telephone system to operators (auto dialer). Disinfection - UV Yes No NA NE Are extra UV bulbs available on site? • ❑ ❑ ❑ Are UV bulbs clean? • ❑ ❑ ❑ Is UV intensity adequate? ■ ❑ ❑ ❑ Is transmittance at or above designed level? • ❑ ❑ ❑ Is there a backup system on site? • ❑ ❑ ❑ Is effluent clear and free of solids? • ❑ ❑ ❑ Comment: UV system maintainance service conducted by Randy and Sherry Vos with Piedmont Tech. Backup generator is in place for UV system should any power failure occur. Aerobic Digester Yes No NA NE Is the capacity adequate? ■ ❑ ❑ ❑ Is the mixing adequate? • ❑ ❑ ❑ Is the site free of excessive foaming in the tank? • ❑ ❑ ❑ # Is the odor acceptable? • ❑ ❑ ❑ # Is tankage available for properly waste sludge? ■ ❑ ❑ ❑ Comment: (2) aerobic diqestors, (1) sludge thickener tank and (1) 1 million gallon holding tank. Mixing is adequate with proper storage capacity. No unusual odors detected during inspection. Solids Handling Equipment Yes No NA NE Is the equipment operational? • ❑ ❑ ❑ Is the chemical feed equipment operational? ❑ ❑ • ❑ Page# 7 DocuSign Envelope ID: AC89673E-BED1-4D63-82ED-D7BD5D3CEF38 Permit: NC0020761 Inspection Date: 12/07/2021 Owner - Facility: Thurman Street WWTP Inspection Type: Compliance Evaluation Solids Handling Equipment Is storage adequate? Is the site free of high level of solids in filtrate from filter presses or vacuum filters? Is the site free of sludge buildup on belts and/or rollers of filter press? Is the site free of excessive moisture in belt filter press sludge cake? The facility has an approved sludge management plan? Yes No NA NE • ❑ ❑ ❑ ❑ ❑ • ❑ • ❑ ❑ ❑ Comment: No chemical feed is used at this facility. Sludge management plan utlitized pump & haul from facility for use in land applications. Page# 8