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Home My WebLink AboutNC0020231_Compliance Evaluation Inspection_20210520ROY COOPER Governor DIONNE DELLI-GATTI Secretary S. DANIEL SMITH Director Mr. Jonathan Franklin Town Administrator Town of Louisburg 110 West Nash Street Louisburg, NC 27549 NORTH CAROLINA Environmental Quality May 20, 2021 Subject: Compliance Evaluation Inspection Tar River Water Reclamation Facility Permit No. NC0020231 Franklin County Dear Mr. Franklin: On March 29, 2021, Cheng Zhang of the Raleigh Regional Office (RRO) conducted a compliance evaluation inspection of the subject facility. The assistance provided by Mr. Jimmy Ellington, the operator in responsible charge (ORC), and Mr. Richard Collins, the lab supervisor, was appreciated as it facilitated the inspection process. The inspection report is attached. The following observations were made: Tar River Water Reclamation Facility is permitted to discharge at a rate of 1.37 MGD and consist of: mechanical bar screen, aerated grit/grease removal, anaerobic selector, dual oxidation ditches (BioDeniopho Process), dual secondary clarifiers, three tertiary filters, ultraviolet disinfection, cascade aeration, aerobic digesters, and ultrasonic flow meter. The plant discharges into the Tar River, a WS-V NSW waters in the Tar -Pamlico River basin. 1. At the time of inspection, permit expired on September 30, 2019. Permit was renewed on February 25, 2021, became effective on April 1, 2021 and expires on September 30, 2025. Mercury minimization plan required in the expired permit was developed and implemented. 2. A new mechanical bar screen was installed at influent pump station about two years ago. Also installed was a septic receiving station which removes debris/grits and meters septage flow. 3. The dual oxidation ditches with BioDeniopho Process have been very effective in biological nutrient removal with the modified phases. It was noted that one mixer in one of the oxidation ditches was out of service and needed to be replaced (replacement mixer was on order at the time of inspection). Solids settled well in the two clarifiers. Two of the three tertiary filters were in service. Wasted sludge is settled first in the old clarifier of the original plant before being treated in the two aerobic digesters. 4. The ORC maintains a daily logbook. Lab results, chain -of -custody forms, and Discharge 1:11 NORTH CAROLINA IleAarhnenlM Enwrpnmenlelpnnlit North Carolina Department of Environmental Quality I Division of Water Resources Raleigh Regional Office r 3800 Barrett Drive I Raleigh, North Carolina 27609 919.791.4200 Monitoring Reports (DMRs) were complete and current, kept in good order and ready for review. July and December 2020 DMR data were compared to lab bench sheets; no data transcription errors were noted during the inspection. 5. The right of way to the Outfall 001 was well maintained. The effluent was observed to be clear and free of solids. No visible impacts were noted immediately downstream the effluent pipe. 6. Field lab parameter (Certificate No. 439) calibration and analysis records were reviewed during the inspection. This facility was found to be compliant with NPDES permit conditions as a result of this inspection. If you have any questions regarding the attached reports or any of the findings, please contact Cheng Zhang at: (919) 791-4200 (or email: cheng.zhang@ncdenr.gov). Sincerely, r—DocuSigned by: Ua tAit,SSa. 1. (tawA.lAtet B2916E6AB32144F... Vanessa E. Manuel, Assistant Regional Supervisor Water Quality Regional Operations Section Raleigh Regional Office Division of Water Resources Enclosure: EPA Water Compliance Inspection Report CC: Laserfiche Jimmy Ellington — ORC (electronic copy only) 1:11 NORTH CAROLINA aea�neM of Environmental ann�i North Carolina Department of Environmental Quality I Division of Water Resources Raleigh Regional Office r 3800 Barrett Drive I Raleigh, North Carolina 27609 919.791.4200 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[ Code j 2 E NPDES yr/mo/day Inspection Type Inspector Fac 3 I NC0020231 111 121 21/03/29 117 18 [ I 191 S I 201 Type 21111111 1111111111I 1111111 I I 111111111111 66 1 Inspection 671 Work Days Facility Self -Monitoring I 7° I3 Evaluation Rating 1 711 B1 72 1 QA I N I 731 Reserved 1 74 71 I I 1 1 1 1 1 1 1 180 l Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) Tar River Water Reclamation Facility WWTP Treatment Plant Rd Off Hwy 56 Louisburg NC 27549 Entry Time/Date 10:10AM 21/03/29 Permit Effective Date 16/03/01 Exit Time/Date 12:45PM 21/03/29 Permit Expiration Date 19/09/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Jimmy Wayne Ellington/ORC/919-496-5101/ Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Billy Faulk,PO Box 468 Louisburg NC 27549//919-496-3236/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenar Records/Reports Self -Monitoring Progran Sludge Handling DispoE Facility 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) Cheng Zhang of Inspector(s) Agency/Office/Phone and Fax Numbers Date c—Docusignedby: DWR/RRO WQ/919-791-4200/ c .0�- 5/20/2021 "- D6171508E1 EC41 F... Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date IDocuSigned by: ou,SSa f. ha.tn,ltid, 5/20/2021 B2916E6AB32144F. EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 1 NPDES yr/mo/day 31 NC0020231 111 121 21/03/29 117 Inspection Type 18 [j (Cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) At the time of inspection, permit expired on September 30, 2019. Permit was renewed on February 25, 2021, became effective on April 1, 2021 and expires on September 30, 2025. Mercury minimization plan required in the expired permit was developed and implemented. Facility is permitted to discharge at a rate of 1.37 MGD and consist of: mechanical bar screen, aerated grit/grease removal, anaerobic selector, dual oxidation ditches (BioDeniopho Process), dual secondary clarifiers, three tertiary filters, ultraviolet disinfection, cascade aeration, aerobic digesters, and ultrasonic flow meter. All treatment units were operable, except for one mixer in one of two oxidation ditched needed to be replaced. Review of records did not reveal dificiencies. Page# 2 Permit: NC0020231 Inspection Date: 03/29/2021 Owner - Facility: Tar River Water Reclamation Facility WW 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: The facility analyzes MLSS, pH, DO, and sludge judge for process control. Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new El ❑ • ❑ 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? • El El El Is the inspector granted access to all areas for inspection? ■ ❑ ❑ ❑ Comment: At the time of inspection, permit expired on September 30, 2019. Permit was renewed on February 25, 2021, became effective on April 1, 2021 and expires on September 30, 2025. Mercury minimization plan required in the expired permit was developed and implemented. 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? • El ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? • El El El 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 El ❑ • ❑ operator on each shift? Is the ORC visitation log available and current? • El ❑ ❑ Is the ORC certified at grade equal to or higher than the facility classification? • ❑ ❑ ❑ Page# 3 Permit: NC0020231 Inspection Date: 03/29/2021 Owner - Facility: Tar River Water Reclamation Facility WW Inspection Type: Compliance Evaluation Record Keeping 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? Comment: Yes No NA NE • ❑ ❑ ❑ Pump Station - Influent Yes No NA NE Is the pump wet well free of bypass lines or structures? ■ ❑ ❑ ❑ Is the wet well free of excessive grease? • El El ❑ Are all pumps present? • El El El Are all pumps operable? • ❑ ❑ ❑ Are float controls operable? • El ❑ ❑ Is SCADA telemetry available and operational? • El El El Is audible and visual alarm available and operational? • El El El Comment: Three pumps with variable frequency device. Septic receiving system removes debris and grits and meters the flow of septage before being dumped into influent wetwell. 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: Time paced composite samples are collected at influent. Yes No NA NE ❑ • ❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? ❑ • ❑ ❑ Is flow meter calibrated annually? • El El El Is the flow meter operational? • El ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? El ❑ • El Comment. Calibrated on 8/27/2020. Page# 4 Permit: NC0020231 Inspection Date: 03/29/2021 Owner - Facility: Tar River Water Reclamation Facility WW Inspection Type: Compliance Evaluation Bar Screens Yes No NA NE Type of bar screen a.Manual ❑ b.Mechanical • Are the bars adequately screening debris? • El El El Is the screen free of excessive debris? • El El El Is disposal of screening in compliance? • ❑ ❑ ❑ Is the unit in good condition? • El El El Comment: Primary mechanical bar screen was installed about two years ago. 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? ■ El El El # Is disposal of grit in compliance? ■ El El El Comment: The grit/grease unit is operated manually by operators (6 times/day). Grease Removal # Is automatic grease removal present? Is grease removal operating properly? Comment: The grit/grease unit is operated manually by operators (6 times/day). Oxidation Ditches Are the aerators operational? Are the aerators free of excessive solids build up? # 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? Are settleometer results acceptable (> 30 minutes)? Is the DO level acceptable?(1.0 to 3.0 mg/I) Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes) Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 5 Permit: NC0020231 Inspection Date: 03/29/2021 Owner - Facility: Tar River Water Reclamation Facility WW Inspection Type: Compliance Evaluation Oxidation Ditches Comment: Yes No NA NE Two BioDeniopho Units (ditches) in series, each with two mixers and two rotor aerators and six phases. One mixer was out of service and needed to be replaced (replacement mixer ordered and waiting for delivery). Facility was operating with 4 phases in each ditch (two anoxic and two oxic) at the time of inspection. Nutrient Removal # Is total nitrogen removal required? # Is total phosphorous removal required? Type # Is chemical feed required to sustain process? Is nutrient removal process operating properly? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Biological ❑ • ❑ ❑ • ❑ ❑ ❑ Comment: Nitrogen and phosphorous are biologically removed without the need of chemical feed. 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: One clarifier was rehabed recently, the other will be rehabed in the near future. Weirs were covered to prevent algae growth. Sludge blanket was between 1 to 2 feet. Scam pump station with one pump. 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? Yes No NA NE Up flow • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 6 Permit: NC0020231 Inspection Date: 03/29/2021 Owner - Facility: Tar River Water Reclamation Facility WW Inspection Type: Compliance Evaluation Filtration (High Rate Tertiary) Is the scouring acceptable? Is the clear well free of excessive solids and filter media? Comment: Three Parkson filters, two in service. filters are backwashed constantly. Disinfection - UV 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 channel with two banks of UV lamps. Yes No NA NE • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ 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 RAS and one WAS pump. One larger RAS pump on site as backup. 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: Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? • ❑ ❑ ❑ Is flow meter calibrated annually? ■ ❑ ❑ ❑ Is the flow meter operational? • ❑ ❑ ❑ Page# 7 Permit: NC0020231 Inspection Date: 03/29/2021 Owner - Facility: Tar River Water Reclamation Facility WW Inspection Type: Compliance Evaluation Flow Measurement - Effluent Yes No NA NE (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ ■ ❑ Comment: Calibrated on 8/27/2020. 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: Standby Power Is automatically activated standby power available? 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? Yes No NA NE • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: The generator is capable to run about half the plant without phasing. 600-gallon diesel tank for the generator. 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: Facility analyzes field parameters, TSS, ammonia, and fecal coliform. Other parameters are analyzed by contract labs, Aerobic Digester Yes No NA NE Is the capacity adequate? ■ ❑ ❑ ❑ Is the mixing adequate? • ❑ ❑ ❑ Page# 8 Permit: NC0020231 Inspection Date: 03/29/2021 Owner - Facility: Tar River Water Reclamation Facility WW Inspection Type: Compliance Evaluation Aerobic Digester Yes No NA NE Is the site free of excessive foaming in the tank? # Is the odor acceptable? # Is tankage available for properly waste sludge? Comment: Two aerobic digesters, each was about half full at the time of inspection. Waste sludge is settled in the old secondary clarifier from the original plant, before being treated in the digesters. Drying Beds Is there adequate drying bed space? Is the sludge distribution on drying beds appropriate? Are the drying beds free of vegetation? # Is the site free of dry sludge remaining in beds? Is the site free of stockpiled sludge? Is the filtrate from sludge drying beds returned to the front of the plant? # Is the sludge disposed of through county landfill? # Is the sludge land applied? (Vacuum filters) Is polymer mixing adequate? Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ Comment: 6 drying beds are not used to dry sludge. One bed was used to hold rags from sewer pump station wet wells. Upstream / Downstream Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type, • ❑ ❑ ❑ and sampling location)? Comment. Member of Tar -Pamlico Basin Association. Page# 9