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Home My WebLink AboutNC0020605_Complaince Evaluation Inspection_20180219February 19, 2018 Michael Allen, Tarboro WWTP Supervisor Town of Tarboro P O Box 220 Tarboro, NC 27886 Subject Compliance Evaluation Inspection Tarboro WWTP NPDES Permit No NCO020605 Edgecombe County Dear Mr Allen ROY COOPER (7,0ve'Jln, MICHAEL S REGATN 4ecl etai l LINDA CULPEPPER h7t,171)i Drrccuu Mitch Hayes of the Raleigh Regional Office conducted the subject inspection on February 15, 2018 Your assistance with this inspection was appreciated Below is a list of findings developed from the inspection and review of the permit 1 The subject permit became effective March 1, 2016 and will expire September 30, 2019 Permit renewal is required within six months of permit expiration date 2 The 5 0 MGD WWTP is composed of the following units influent pump station, manual bar screen, mechanical grit removal, splitter box, three primary clarifiers, two (2) trickling filters, four (4) secondary clarifiers, chlorine gas disinfection, chlorine contact tank, liquid dechlorination, cascade aeration, two (2) mechanical aeration sludge basins; an anoxic zone sludge basin, a diffused aeration sludge basin, sludge aeration holding lagoon, twelve (12) sludge drying beds, three (3) anaerobic digesters; three (3) aerobic digesters, sludge truck loading station, and an on -site generator 3 At the time of inspection, one primary clarifier was not in operation due to repairs being made to a bent scum trough One mixer was out of service in the aerobic digester and aerated sludge holding basin One trickling filter was being operated due to low inflow Sludge blankets in the secondary clarifiers are kept at two feet in the two smaller clarifiers and three feet in the larger clarifiers Effluent appeared clear with no foaming at the cascade aerator Class B biosolids are land applied by Granville Farms under Land Application permit WQ0002047 There was no sludge in the drying beds The on -site generator is operated once a week under load 4 The laboratory was checked in a cursory manner All instruments, meters, probes, photometric cells are maintained in good condition Temperatures on all equipment are checked against an MIST thermometer. All standards, reagents and consumables used are within expiration dates The influent sampler box was 4 5 degrees C and the effluent sampler box was 5 degrees C The fecal coliform bath was 44 5 degrees C and the BOD incubator was 20 0 degrees C A calibration log for all meters is kept up to date Flow meters are calibrated once a quarter The last calibration was done January 31, 2018 cornpares �.. Division of Water Re6ources, Raleigh Regional Office, Water Quality Operations Section http //portal ncdenr org/web/wq/ap9 1628 Mail Service Center, Raleigh, NC 27699-1628 Phone (919) 791-4200 Location 3800 Barrett Drive Raleigh, vC 27609 Fax (919) 788-7159 5 Discharge Monitoring Reports (DMR's) for the period August 2015 through December 2017 were reviewed for compliance with permit limit and monitoring requirements There were no violations for the period 6 Commercial lab results, chain of custody records, and bench sheets were compared with data submitted on the DMR for December 2017 No discrepancies were noted Tarboro WWTP laboratory analyses fecal coliform, pH, total suspended solids, dissolved oxygen, ammonia, TRC, BOD, COO, and settleable solids Environment One analyses TP, TKN, NO2-N + NO3-N, and metals Pace Analytical analyses toxicity and the annual pollutant scan I want to thank you again for your assistance with this inspection If you have any questions about this letter or the inspection, please contact Mitch Hayes at 919 791 4261 or by email at Sincerely, Danny Smith,/Regional Supervisor Raleigh Regional Operations Section Raleigh Regional Office Division of Water Resources, NC DEQ cc permit, central files United States Environmental Protection Agency Form Approved Washington, D C 20460 EPA 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 1 2 15 I 3 I NCO020605 111 121 18/02/15 I17 18 I C l 19 I G I ' 201 21111111 111111111 11 1 11 1111 I 1 11111 111111111 11 l66 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ------ ------------ -- Reserved --- —---- --------- 67 72 Lj, _LI I80 73 L75I I I I I I 70 [—] 71 it 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 permit Number) 10 30AM 18/02/15 16/03/01 Tarboro WWTP US Hwy 64 Bypass Exit Time/Date Permit Expiration Date Tarboro NC 27886 11 30AM 18/02/15 19/09/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data /// Kevin Ray Peaden/ORC/252-641-4253/ Michael Allen//252-641-4251 / Michael Glenn Allen/ORC/252-641-4251/ Name, Address of Responsible Official/Title/Phone and Fax Number - Contacted Michael AIIen,PO Box 220 Tarboro NC 278860220//252-641-4251/2526414230 Yes Section C Areas Evaluated During Inspection (Check only those areas evaluated) ® Permit ® Flow Measurement ® Operations & Maintenance ® Records/Reports ® Self -Monitoring Program ® Sludge Handling Disposal ® 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 Mitchell S Hayes RRO WQ//919-791-4200/ /V r ra)tu,,o',fMana,, ement evlewer Agency/Office/Phone and Fax Numbers Date av/ EPA Form? 60-3 (Rev 9-94) Previous editions are obsolete Page# 11 NPDES yr/mo/day Inspection Type (Cont) 31 NCO020605 I11 121 18/02/15 117 18 1 r 11-1 Section D Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) The 5 0 MGD WWTP Is composed of the following units Influent pump station, manual bar screen, mechanical grit removal, splatter box, three primary clarifiers, two (2) trickling filters, four (4) secondary clarifiers, chlorine gas disinfection, chlorine contact tank, liquid dechlorinatlon, cascade aeration, two (2) mechanical aeration sludge basins, an anoxic zone sludge basin, a diffused aeration sludge basin, sludge aeration holding lagoon, twelve (12) sludge drying beds, three (3) anaerobic digesters, three (3) aerobic digesters, sludge truck loading station, and an on -site generator At the time of inspection, one primary clarlfle, was not In operation due to repairs being made to a bent scum trough One mixer was out of service Ir the aerobic digester and aerated sludge holding basin One trickling filter was being operated due to low Inflow Sludge blankets in the secondary clarifiers are kept at two feet In the two smaller clarifiers and three feet In the larger clarifiers Effluent appeared clear with no foaming at the cascade aerator Class B biosolids are land applied by Granville Farms under Land Application permit W00002047 There was no sludge in the drying beds The on -site generator Is operated once a week under load The laboratory was checked In a cursory manner All instruments, meters, probes, photometric cells are maintained In good condition Temperatures on all equipment are checked against an NIST thermometer All standards, reagents and cons,_Imables used are within expiration dates The Influent sampler box was 4 5 degrees C and the effluent sampler box was 5 degrees C The fecal collform bath was 44 5 degrees C and the BOD Incubator was 20 0 degrees C A calibration log for all meters Is kept up to date Flow meters are calibrated once a quarter The last calibration was done January 31, 2018 Discharge Monitoring Reports (DMR's) for the period August 2015 through December 2017 were reviewed for compliance with permit limit and monitoring requirements There were no violations for the period Commercial lab results, chain of custody records, and bench sheets were compared with data submitted on the DMR for December 2017 No diEcrepancles were noted Tarboro WWTP laboratory analyses fecal collform, pH, total suspended solids, dissolved oxygen, ammonia, TRC, BOD, COD, and settleable solids Environment One analyses TP, TKN, NO2-N + NO3-N, and metals Pace Analytical analyses toxicity and the annual pollutant scan Page# 2 P Permit NCO020605 Owner - Facility Tarboro VWVTP Inspection Date 02/1512018 Inspection Type 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? M ❑ ❑ ❑ # 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? M ❑ ❑ ❑ Comment There are no special conditions 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? ® ❑ ❑ ❑ 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? 11 ❑ ❑ ❑ Has the facility submitted its annual compliance report to users and DWQ? IN ❑ ❑ ❑ (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator M ❑ ❑ ❑ on each shift? Is the ORC visitation log available and current? IN❑ ❑ ❑ Is the ORC certified at grade equal to or higher than the facility classification? W ❑ ❑ ❑ Is the backup operator certified at one grade less or greater than the facility classification? M ❑ ❑ ❑ Is a copy of the current NPDES permit available on site? M ❑ ❑ ❑ Page# 3 Permit NC0020605 Owner - Facility Tarboro VWVTP Inspection Date 0211512018 Inspection Type Compliance Evaluation Record Keeping Yes No NA NE Facility has copy of previous year's Annual Report on file for review? ■ ❑ ❑ ❑ Comment December 2017 data checked and found no descripances in data transcription 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 Effluent appeared clear with no foam entering the Tar River Flow Measurement - Influent Yes No NA NE # 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? ® ❑ ❑ ❑ Comment Flow meter is calibrated quarterly Last calibration was 01 31 2018 Flow Measurement - Effluent Yes No NA NE # 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 Tlow meter? E ❑ ❑ ❑ Comment Flow meter is calibrated guarterl Aerobic Digester Yes No NA NE IN ❑ ❑ ❑ Is the capacity adequate? 12 ❑ ❑ ❑ Is the mixing adequate? Is the site free of excessive foaming in the tank? 11 ❑ ❑ ❑ # Is the odor acceptable? ig ❑ ❑ # Is tankage available for properly waste sludge? E ❑ ❑ ❑ Comment One mixer was not in service Anaerobic Digester Yes No NA NE Type of operation Fixed cover Page# 4 A / Permit NCO020605 Inspection Date 02/15/2018 Owner - Facility Tarboro WVVTP Inspection Type Compliance Evaluation Anaerobic Digester Yes No NA NE Is the capacity adequate? 0 ❑ ❑ ❑ # Is gas stored on site? ❑ ❑ . ❑ Is the digester(s) free of tilting covers? ❑ ❑ 0 ❑ Is the gas burner operational? ❑ ❑ 0 ❑ Is the digester heated? ❑ ❑ 0 ❑ Is the temperature maintained constantly? ❑ ❑ 0 ❑ Is tankage available for properly waste sludge? 0 ❑ ❑ ❑ Comment Digesters are operating at ambient temperatures Drying Beds Yes No NA NE Is there adequate drying bed space? ® ❑ ❑ ❑ Is the sludge distribution on drying beds appropriate? ❑ ❑ 0 ❑ Are the drying beds free of vegetation? 0 ❑ ❑ ❑ # Is the site free of dry sludge remaining In beds? 0 ❑ ❑ ❑ Is the site free of stockpiled sludge? 0 ❑ ❑ ❑ Is the filtrate from sludge drying beds returned to the front of the plant? 0 ❑ ❑ ❑ # Is the sludge disposed of through county landfill? ❑ 0 ❑ ❑ # Is the sludge land applied? ® ❑ ❑ ❑ (Vacuum filters) Is polymer mixing adequate? ❑ ❑ 0 ❑ Comment Class B Sludge Is land applied by Granville Farms Pump Station - Influent Yes No NA NE Is the pump wet well free of bypass lines or structures? 0 ❑ ❑ ❑ Is the wet well free of excessive grease? M ❑ ❑ ❑ Are all pumps present? H ❑ ❑ ❑ Are all pumps operable? IN ❑ ❑ ❑ Are float controls operable? M ❑ ❑ ❑ Is SCADA telemetry available and operational? ❑ ❑ N ❑ Is audible and visual alarm available and operational? ❑ ❑ ❑ Is Comment Bar Screens Yes No NA NE Type of bar screen Page# 5 Permit NC0020605 Inspection Date 0211512018 Owner - Facility Tarboro WVVTP Inspection Type Compliance Evaluation Bar Screens Yes No NA NE a Manual i b Mechanical ❑ Are the bars adequately screening debris? 0 ❑ ❑ ❑ Is the screen free of excessive debris? 0 ❑ ❑ ❑ Is disposal of screening In compliance? ® ❑ ❑ ❑ Is the unit in good condition? ® ❑ ❑ ❑ Comment Grit Removal Yes No NA NE 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 Primary 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? E ❑ ❑ ❑ Is scum removal adequate? 0 ❑ ❑ ❑ Is the site free of excessive floating sludge? M ❑ ❑ ❑ Is the drive unit operational? E ❑ ❑ ❑ Is the sludge blanket level acceptable? H ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately'/< of the sldewall depth) ❑ ❑ ❑ Comment Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? IN ❑ ❑ ❑ Is the site free of excessive buildup of solids in center well of circular clarifier? E ❑ ❑ ❑ Page# 6 1 Permit NCO020605 Owner - Facility Tarboro VVWTP Inspection Date 02/15/2018 Inspection Type Compliance Evaluation Secondary Clarifier Yes No NA NE Are weirs level? ❑ ❑ ❑ i 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? i ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? 0 ❑ ❑ ❑ Is the overflow clear of excessive solids/pin floc? ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) ® ❑ ❑ ❑ Comment weirs are covered preventing Inspection Disinfection -Gas Yes No NA NE Are cylinders secured adequately? ® ❑ ❑ ❑ Are cylinders protected from direct sunlight? ® ❑ ❑ ❑ Is there adequate reserve supply of disinfectant? ® ❑ ❑ ❑ 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? ® ❑ ❑ ❑ Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No 7782-50-5)? ❑ ❑ ® ❑ If yes, then is there a Risk Management Plan on site? ❑ ❑ ® ❑ If yes, then what is the EPA twelve digit ID Number? (1 000--� If yes, then when was the RMP last updated? Comment De -chlorination Yes No NA NE Type of system ? Liquid Is the feed ratio proportional to chlorine amount (1 to 1)? ® ❑ ❑ ❑ Is storage appropriate for cylinders? ❑ ❑ 11 ❑ # Is de -chlorination substance stored away from chlorine containers? K ❑ ❑ ❑ Are the tablets the proper size and type? ❑ ❑ IN ❑ Comment Powdered Sodium metabisulphite is made into a solution and stored Into two large vessels Are tablet de-chlonnators operational? ❑ ❑ ❑ Number of tubes in use? Page# 7 Permit NC0020605 owner -Facility Tarboro WVVTP Inspection Date 02/15/2018 Inspection Type Compliance Evaluation De -chlorination Yes No NA NE Comment Standby Power Yes No NA NE Is automatically activated standby power available? N ❑ ❑ ❑ Is the generator tested by Interrupting primary po'Ner 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 Generator is operated under load once a week Pumps-RAS-WAS Yes No NA NE ®❑ ❑ ❑ Are pumps in place? ❑ ® ❑ ❑ Are pumps operational? Are there adequate spare parts and supplies on site? ® ❑ ❑ ❑ Comment One out of three pumps were operational Laboratory Yes No NA NE Are field parameters performed by certified personnel or labcratory? 9 ❑ ❑ Are all other parameters(excluding field parameters) performed by a certified lab? 9 ❑ ❑ ❑ ❑ ❑ ❑ # Is the facility using a contract lab? # Is proper temperature set for sample storage (kept at less than or equal to 6 0 degrees 11 ❑ ❑ ❑ Celsius)? El El El Incubator (Fecal Coliform) set to 44 5 degrees Celsius+/- 0 2 degrees? Incubator (BOD) set to 20 0 degrees Celsius +/- 1 0 degrees? Is ❑ ❑ ❑ Comment Tarboro VWVFP laboratory analyses fecal conform pH total suspended solids dissolved oxVqen, ammonia TRC BOD COD and settleable solids Environment One analyses TP, TKN NO2 N + NO3 N and metals Pace Anaiviical analyses toxicity and the annual pollutant scan Disinfection -Liquid Yes No NA NE Is there adequate reserve supply of disinfectant? ❑ ❑ 2 ❑ (Sodium Hypochlorite) Is pump feed system operational? IM ❑ ❑ ❑ Is bulk storage tank containment area adequate? (free of leaks/open drains) N ❑ ❑ ❑ Page# Permit NCO020605 Inspection Date 02/15/2018 Owner - Facility Tarboro VWVTP Inspection Type Compliance Evaluation Disinfection -Liquid Is the level of chlorine residual acceptable? Is the contact chamber free of growth, or sludge buildup? Is there chlorine residual prior to de-chlonnatlon? Comment Chlorine gas Is used for disinfection 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? Comment Effluent Sampling 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 Yes No NA NE ® ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE Yes No NA NE Page# 9