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Home My WebLink AboutNC0003450_Compliance Evaluation Inspection_20201130DocuSign Envelope ID: 62FEFE47-OB77-4075-9964-F1919823B817 ROY COOPER Governor MICHAEL S. REGAN Secretary S. DANIEL SMITH Director Brent M Dean Town of Wallace 316 E Murray St Wallace, NC 28466 Subject: Dear Mr. Dean, NORTH CAROLINA Environmental Quality November 30, 2020 NPDES Compliance Inspection Report Wallace WWTP NPDES Permit No. NC0003450 Duplin County A compliance inspection of the Town of Wallace Wastewater Treatment Plant was conducted on November 30, 2020, to verify that the facility is operating in compliance with the conditions and limitations specified in NPDES Permit NC0003450. The DWR would like to thank the Town's staff for their time, assistance, and expertise provided during the inspection. There were no compliance issues observed during the inspection and therefore, a response to this inspection report is not required. The Endings and comments noted during this inspection are provided in the enclosed copy of the "Water Compliance Inspection Report". If you have any questions concerning this report, you may contact the inspector at (910) 796-7215 or via email at chad.cobumkncdenr.gov . Sincerely, DDocuSigned by: Tom 7F141E73B6F3456... Tom Tharrington, Assistant Regional Supervisor Water Quality Regional Operations Section Wilmington Regional Office Division of Water Resources, NCDEQ Enclosure Cc: Wilmington Regional Office Files Laserfiche D E Qbi�� North Carolina Department of Environmental Quality I Division of Water Resources Washington Regional Office 1 943 Washington Square Mall I Washington, North Carolina 27889 vOry rN Cx:40:.itiA � N. a I E�.w��WQa A� /� 252.946.6481 DocuSign Envelope ID: 62FEFE47-OB77-4075-9964-F1919823B817 United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 Water Compliance Inspection Report 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 IN I 2 u 3 I NC0003450 I11 121 20/11/30 I17 18I � I 19 I s I 20L] 21111I I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I II I I I I I r6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved ------------------- 67 I 72 I ni I 71 I 74 79 I I I I I I I80 701 I 71 I LL -1 I I LJ Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include Entry Time/Date Permit Effective Date POTW name and NPDES Dermit Number) 09:OOAM 20/11/30 18/12/01 Wallace Regional WWTP 851 Old Wilmington Rd Exit Time/Date Permit Expiration Date Wallace NC 28466 11:00AM 20/11/30 23/01/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Lisa Hodges Cottle/ORC/910-285-5927/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Brent M Dean,316 E Murray St Wallace NC 28466/Public Services Director/910-285-2812/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit 0 Flow Measurement Operations & Maintenar Records/Reports Self -Monitoring Progran 0 Sludge Handling Dispo: Facility Site Review Effluent/Receiving Wate Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signat g9rS'9"ilSr,(s) Agency/Office/Phone and Fax Numbers Date CeP8" Tyler G Benson �� 6LIA V1, DWR/WIRO WQ/910-796-7336/ 11/30/2020 Chad Coburn °o �uSig°nedby: DWR/WIROWQ/910-796-7379/ 11/30/2020 p/ � p �wu ( 8237FC6EDFCC4A3... Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date DocuSigned by: Tom Tharringt n 'Cuµ �-cc�. WR/WIRO WQ/ - - / 11/30/2020 "- 7F141 E73B6F3456... EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# DocuSign Envelope ID: 62FEFE47-OB77-4075-9964-F1919823B817 NPDES yr/mo/day Inspection Type NC0003450 I11 12I 20/11/30 117 18 i c i Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) This facility appears to be well run and maintained. The staff continues to manage several engineering design issues and equipment problems. The majority of the damages that occurred after Hurricane Florence have been repaired and the UV disinfection system is back online. Envirochem in Wilmingtor is still being used for lab analyses and Triple S is the currently contractor for sludge handling and disposal. Page# DocuSign Envelope ID: 62FEFE47-OB77-4075-9964-F1919823B817 Permit: NC0003450 Owner -Facility: Wallace Regional WWTP Inspection Date: 11/30/2020 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 ❑ ❑ 0 ❑ application? Is the facility as described in the permit? 0 ❑ ❑ ❑ # Are there any special conditions for the permit? ❑ 0 ❑ ❑ Is access to the plant site restricted to the general public? 0 ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? 0 ❑ ❑ ❑ Comment: The current permit expires on 01/31/23. Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? 0 ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ ❑ ❑ Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: The staff analyze PH, DO, temperature, and MLSS on site. MLSS typically runs between 2200-2500 mg/L. Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? 0 ❑ ❑ ❑ Is all required information readily available, complete and current? 0 ❑ ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? 0 ❑ ❑ ❑ Are analytical results consistent with data reported on DMRs? 0 ❑ ❑ ❑ Is the chain -of -custody complete? 0 ❑ ❑ ❑ 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 operatc ❑ ❑ ❑ 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? ❑ ❑ ❑ Page# 3 DocuSign Envelope ID: 62FEFE47-OB77-4075-9964-F1919823B817 Permit: NC0003450 Owner -Facility: Wallace Regional WWTP Inspection Date: 11/30/2020 Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Facility has copy of previous year's Annual Report on file for review? 0 ❑ ❑ ❑ Comment: Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? 0 ❑ ❑ ❑ Is flow meter calibrated annually? 0 ❑ ❑ ❑ Is the flow meter operational? 0 ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ MEI Comment: Both influent and effluent flow meters were calibrated in May 2020 by John Glover of Glover and Associates. Pump Station - Influent Is the pump wet well free of bypass lines or structures? Is the wet well free of excessive grease? 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: All four pumps are currently working but only 3 are needed at a time. Influent Sampling # Is composite sampling flow proportional? Is sample collected above side streams? 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 sampling performed according to the permit? Yes No NA NE ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ ■ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ Comment: Refrigerator was at 4 degrees Celsius during the inspection. Between 175-225 mL collected each time. Standby Power Is automatically activated standby power available? Yes No NA NE ■ ❑ ❑ ❑ Page# 4 DocuSign Envelope ID: 62FEFE47-OB77-4075-9964-F1919823B817 Permit: NC0003450 Inspection Date: 11/30/2020 Owner -Facility: Wallace Regional WWTP Inspection Type: Compliance Evaluation Standby Power Is the generator tested by interrupting primary power source? Is the generator tested under load? Was generator tested & operational during the inspection? Do the generator(s) have adequate capacity to operate the entire wastewater site? Is there an emergency agreement with a fuel vendor for extended run on back-up power? Is the generator fuel level monitored? Comment: The qenerator is test each Thursday at 2pm under load. 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ■ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE EJ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ Comment: The grit removal system was not operational during the visit and has not been for a few years now. The ORC will be requesting funding in the upcoming budget to repair it and get i Bar Screens Yes No NA NE Type of bar screen a.Manual ❑ b.Mechanical Are the bars adequately screening debris? 0 ❑ ❑ ❑ Is the screen free of excessive debris? 0 ❑ ❑ ❑ Is disposal of screening in compliance? 0 ❑ ❑ ❑ Is the unit in good condition? M ❑ ❑ ❑ Comment: Sequencing Batch Reactors Yes No NA NE Type of operation: Duplex Is the reactor effluent free of solids? 0 ❑ ❑ ❑ Does minimum fill time correspond to the peak hour flow rate of the facility? ❑ ❑ ❑ Is aeration and mixing cycled on and off during fill? 0 ❑ ❑ ❑ Page# 5 DocuSign Envelope ID: 62FEFE47-OB77-4075-9964-F1919823B817 Permit: NC0003450 Inspection Date: 11/30/2020 Sequencing Batch Reactors The operator understands and can explain the process? Owner -Facility: Wallace Regional WWTP Inspection Type: Compliance Evaluation Yes No NA NE ■ ❑ ❑ ❑ Comment: Reactors 1 & 3 are currently operable. #2 is down for maintenance at this time. The facility continues to have problems with the decanters and engineering design. The ORC appears to be making due as best as is possible. Aerobic Digester 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: Two sludge thickening basins are in use after the aerobic digester. Equalization Basins Is the basin aerated? Is the basin free of bypass lines or structures to the natural environment? Is the basin free of excessive grease? Are all pumps present? Are all pumps operable? Are float controls operable? Are audible and visual alarms operable? # Is basin size/volume adequate? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE ❑ ❑ ■ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ■ Comment: The equalization basin at this facility is post aeration. There had been issues in the pas with some solids getting into the EQ basin due to problems with the decanter on SBR 2. Filtration (High Rate Tertiary) Type of operation: Is the filter media present? Is the filter surface free of clogging? Is the filter free of growth? Is the air scour operational? Is the scouring acceptable? Is the clear well free of excessive solids and filter media? Comment: Yes No NA NE Cross flow ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ Page# 6 DocuSign Envelope ID: 62FEFE47-OB77-4075-9964-F1919823B817 Permit: NC0003450 Inspection Date: 11/30/2020 Owner -Facility: Wallace Regional WWTP Inspection Type: Compliance Evaluation Disinfection - UV Yes No NA NE Are extra UV bulbs available on site? 0 ❑ ❑ ❑ Are UV bulbs clean? ❑ ❑ ❑ Is UV intensity adequate? 0 ❑ ❑ ❑ Is transmittance at or above designed level? 0 ❑ ❑ ❑ Is there a backup system on site? 0 ❑ ❑ ❑ Is effluent clear and free of solids? 0 ❑ ❑ ❑ Comment: Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? 0 ❑ ❑ ❑ Is flow meter calibrated annually? 0 ❑ ❑ ❑ Is the flow meter operational? 0 ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ 0 ❑ Comment: Both influent and effluent flow meters were calibrated in May 2020 by John Glover of Glover and Associates. Pump Station - Effluent Yes No NA NE Is the pump wet well free of bypass lines or structures? ❑ ❑ ❑ Are all pumps present? 0 ❑ ❑ ❑ Are all pumps operable? 0 ❑ ❑ ❑ Are float controls operable? ❑ ❑ ❑ Is SCADA telemetry available and operational? 0 ❑ ❑ ❑ Is audible and visual alarm available and operational? ❑ ❑ ❑ Comment: All four pumps are currently working but only 3 are needed at a time Effluent Sampling Yes No NA NE Is composite sampling flow proportional? 0 ❑ ❑ ❑ Is sample collected below all treatment units? 0 ❑ ❑ ❑ Is proper volume collected? 0 ❑ ❑ ❑ Is the tubing clean? 0 ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees 0 ❑ ❑ ❑ Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type 0 ❑ ❑ ❑ representative)? Page# 7 DocuSign Envelope ID: 62FEFE47-OB77-4075-9964-F1919823B817 Permit: NC0003450 Inspection Date: 11/30/2020 Effluent Sampling Owner -Facility: Wallace Regional WWTP Inspection Type: Compliance Evaluation Yes No NA NE Comment: Refrigerator was at 4 degrees Celsius during the inspection. Between 250-275 mL collected each time. Upstream / Downstream Sampling Is the facility sampling performed as required by the permit (frequency, sampling type, an( sampling location)? Comment: Effluent Pipe 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: Yes No NA NE ■ ❑ ❑ ❑ Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Page# 8