The URL can be used to link to this page

Home My WebLink AboutNC0026000_Compliance Evaluation Inspection_20201203DocuSign Envelope ID: B3EAFE22-6DE4-4AA2-A516-9B80E8AECF9E ROY COOPER Governor MICHAEL 5. REGAN Secretary S. DANIEL SMITH 0irecror Al Jack Leonard Town of Tabor City PO Box 655 Tabor City, NC 28463-0655 NORTH CAROLINA Environmental Quality December 14, 2020 SUBJECT: Compliance Inspection Report Tabor City WWTP NPDES WW Permit No. NCO026000 Columbus County Dear Permittee: The North Carolina Division of Water Resources conducted an inspection of the Tabor City WWTP on 12/03/2020. This inspection was conducted to verify that the facility is operating in compliance with the conditions and limitations specified in NPDES WW Permit No. NC0026000. The findings and comments noted during this inspection are provided in the enclosed copy of the inspection report entitled "Compliance Inspection Report". There were no significant issues or findings noted during the inspection and therefore, a response to this inspection report is not required. If you should have any questions, please do not hesitate to contact Helen Perez with the Water Quality Regional Operations Section in the Wilmington Regional Office at 910-796-7215 or via email at helen.perez@ncdenr.gov. Sincerely, Docu On, Signed by: 1_T,1),_,,1E73B6F345G ... Morelia Sanchez -King, Regional Supervisor Water Quality Regional Operations Section Wilmington Regional Office Division of Water Resources, NCDEQ ATTACHMENTS Cc: Stephanie Moore — electronic copy Upload to Laser fiche North Carolina Department of Environmental Quality I Division of Water Resouroes Wanungton Regbnal Dfhoe 1127 Cardinal Dn►le Extension 14hk"gton, North Caroina 28405 �- `•- ^^--� 90796-7215 DocuSign Envelope ID: B3EAFE22-6DE4-4AA2-A516-9B80E8AECF9E 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 1 2 IS I 3 I NCO026000 I11 121 20/12/03 I17 18 I,- I 19 I G I 201 21111111111111111111111111111111111111111111 f6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 CA ---------------------- Reserved ------------------- 67 701L, J I 71 Ip tyI 72 I Ln, I 73LLI74 71 I I I I I I I80 J 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:OOAM 20/12/03 15/12/01 Tabor City WWTP 244 US Hwy 701 Bypass N Exit Time/Date Permit Expiration Date Tabor City NC 28463 12:OOPM 20/12/03 19/08/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Stephanie Moore//910-617-1353 / Stephanie Moore/ORC/910-617-1353/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Al Jack Leonard,PO Box 655 Tabor City NC 284630655/Town Manager/910-653-3458/9106533970 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 Dispos Facility Site Review Compliance Schedules Effluent/Receiving Wate 0 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 Helen I Perez Docusigned by: DWR/WIRO WQ/910-796-7387/ 12/14/2020 1 D645B4A39694BE... Signature of Man Agency/Office/Phone and Fax Numbers Date Tom Tharrin tort°n" �"` ``'193WR/WIRO WQ/ - - / 12/14/2020 EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# DocuSign Envelope ID: B3EAFE22-6DE4-4AA2-A516-9B80E8AECF9E NPDES yr/mo/day Inspection Type (Cont.) 31 NCO026000 I11 12I 20/12/03 117 18 ICI Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) A routine compliance inspection of the Tabor City WWTP was conducted on December 3, 2020. The purpose of the evaluation was to verify that the facility is operating in compliance with the conditions and limitations specified in Permit NC0026000. This extended aeration plant is permitted for 1.1 MGD and currently averages 0.45 MGD. Overall maintenance of the plant has improved since last inspection. All required documentation requested was readily available. A file review of the last 12-month period indicates two violations issued: 1 NOD for weekly fecal exceedance in 6/20 and 1 NOV for weekly, monthly Ammonia and weekly fecal exceedances for 7/20. The Town of Tabor City WWTP is under a Corrective Action Plan (CAP), permit condition A.(6). An Authorization to Construct (ATC) was issued by DWR on February 15, 2019 to address some of the issues in the CAP. A construction update was received by the Wilmington Regional Office from Municipal Engineering Services on May 7, 2019 and another on the day of the inspection. Project milestones have been delayed due to discovered electrical issues, Hurricane Florence, COVID-19 isssues and lack of funds. The areas of contruction have been the new upsized force main from the influent pump station to the EQ basin and the gravity fed piping between the upper clarifier and aeration basin. The new floating aerator for the digester has been ordered and installation planned by the end of January 2021. The Town is waiting on delivery of the 4 submersible pumps and respective control panels for the influent pump station (PS). Retrofitting the existing influent PS wet well, installing the new pumps and installing the new automated valve from the influent PS to EQ basin are planned for April 2021. Currently, Phase-2 is being added to the scope of work which will include the new chlorine contact chamber and rehabilitation work for the upper clarifier. The facility is compliant with NPDES Permit NC0026000. Please review the comment sections of the inspection report for more details Page# DocuSign Envelope ID: B3EAFE22-6DE4-4AA2-A516-9B80E8AECF9E Permit: NCO026000 Owner - Facility: Tabor City WWTP Inspection Date: 12/03/2020 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 permit expired 8-31-2019. A renewal application was received by the Central Office in March 2019 and is currently under review. Compliance Schedules Yes No NA NE Is there a compliance schedule for this facility? 0 ❑ ❑ ❑ Is the facility compliant with the permit and conditions for the review period? 0 ❑ ❑ ❑ Comment: A revised CAP was received from the Town on 5/23/17and a Requested Response to DWR was recieved on 7/27/17. DWR approved an Authorization to Construct on 2/15/19. A draft milestone schedule was received from Municipal Engineering Services on 5/7/19 and a construction update on 12/3/20. 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 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? Yes No NA NE ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Page# 3 DocuSign Envelope ID: B3EAFE22-6DE4-4AA2-A516-9B80E8AECF9E Permit: NCO026000 Owner - Facility: Tabor City WWTP Inspection Date: 12/03/2020 Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Is the backup operator certified at one grade less or greater than the facility classification' 0 ❑ ❑ ❑ Is a copy of the current NPDES permit available on site? 0 ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? 0 ❑ ❑ ❑ Comment: Documentation of DMRs, COCs and lab results were readily available and complete. Operation and maintenance check lists are used for documentation of daily plant activities. Laboratory Yes No NA NE Are field parameters performed by certified personnel or laboratory? 0 ❑ ❑ ❑ Are all other parameters(excluding field parameters) performed by a certified lab? 0 ❑ ❑ ❑ # Is the facility using a contract lab? 0 ❑ ❑ ❑ # 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? ❑ ❑ 0 ❑ Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? ❑ ❑ 0 ❑ Comment: Field testina is conducted by operators under the Envirolink. Certification # 5212. and bench sheets and calibrations for the field testinq were complete. Envirochem, Certification #94, is Envirolink's contract lab. The Town uses McGill for haulinq sludge from the facility approximatele every 6 months. The Pre -Acceptance & Annual Lab Analyses for October 2020 residuals were reviewed. 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? ❑ ❑ 0 ❑ Comment: The influent flow meter was calibrated on May 20, 2020 by J.S. Dismuke Co. 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? Comment: The effluent flow meter was calibrated on May 20, 2020 DMR reporting. Standby Power Yes No NA NE ■ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ■ ❑ .S. Dismuke Co. and is used for Yes No NA NE Page# 4 DocuSign Envelope ID: B3EAFE22-6DE4-4AA2-A516-9B80E8AECF9E Permit: NCO026000 Owner - Facility: Tabor City WWTP Inspection Date: 12/03/2020 Inspection Type: Compliance Evaluation 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 • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ ■ ■ ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ Comment: The generator is auto tested weekly. The Town has a contract with Duke Energy to switch to generator power during peak times in the summer and winter. Preventive maintenance is performed once a year. 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: Process control parameters anal Pump Station - Influent include MLSS and settleable solids. 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? Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ Comment: Areas of construction consists of a new upsized force main that will feed the existinq EQ basin with flow from the upgraded influent pump station (PS). The Town is waiting on the delivery of 4 submersible pumps and respective control panels. During the month of January, construction on retrofitting the existing influent PS wet wells for the new pumping system should begin. Bar Screens Yes No NA NE Type of bar screen a.Manual b.Mechanical Are the bars adequately screening debris? 0 ❑ ❑ ❑ Page# 5 DocuSign Envelope ID: B3EAFE22-6DE4-4AA2-A516-9B80E8AECF9E Permit: NC0026000 Owner - Facility: Tabor City WWTP Inspection Date: 12/03/2020 Inspection Type: Compliance Evaluation Bar Screens Is the screen free of excessive debris? Is disposal of screening in compliance? Is the unit in good condition? Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Comment: The bar screen is cleaned manually 2 times a day. The ATC consists of the installation of a new mechanical bar screen. Grit Removal Yes No NA NE Type of grit removal a.Manual ❑ b.Mechanical Is the grit free of excessive organic matter? ❑ ❑ 0 ❑ Is the grit free of excessive odor? ❑ ❑ 0 ❑ # Is disposal of grit in compliance? 0 ❑ ❑ ❑ Comment: The grit removal system does not appear to be operable. Equalization Basins Yes No NA NE Is the basin aerated? 0 ❑ ❑ ❑ Is the basin free of bypass lines or structures to the natural environment? 0 ❑ ❑ ❑ Is the basin free of excessive grease? 0 ❑ ❑ ❑ Are all pumps present? 0 ❑ ❑ ❑ Are all pumps operable? ❑ ❑ ❑ Are float controls operable? ❑ ❑ 0 ❑ Are audible and visual alarms operable? ❑ ❑ 0 ❑ # Is basin size/volume adequate? ❑ ❑ ❑ Comment: The 2 surface aerators were not in operation. There is a manual valve to divert flow to the EQ from the influent PS. The ATC includes installation of a new automated valve. Aeration Basins Mode of operation Type of aeration system 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? Yes No NA NE Ext. Air Surface ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ ■ ❑ ❑ ❑ Page# 6 DocuSign Envelope ID: B3EAFE22-6DE4-4AA2-A516-9B80E8AECF9E Permit: NCO026000 Owner - Facility: Tabor City WWTP Inspection Date: 12/03/2020 Inspection Type: Compliance Evaluation Aeration Basins Yes No NA NE Does the foam cover less than 25% of the basin's surface? 0 ❑ ❑ ❑ Is the DO level acceptable? ❑ ❑ ❑ Is the DO level acceptable?(1.0 to 3.0 mg/I) ❑ ❑ ❑ Comment: The upper aeration basin is not in operation and is currently being used as an EQ basin during heavy rain events. The lower aeration basin was in operation and all 3 surface aerators were functionina. Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? 0 ❑ ❑ ❑ Is the site free of excessive buildup of solids in center well of circular clarifier? 0 ❑ ❑ ❑ Are weirs level? 0 ❑ ❑ ❑ Is the site free of weir blockage? 0 ❑ ❑ ❑ Is the site free of evidence of short-circuiting? 0 ❑ ❑ ❑ Is scum removal adequate? 0 ❑ ❑ ❑ Is the site free of excessive floating sludge? 0 ❑ ❑ ❑ Is the drive unit operational? 0 ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? ❑ ❑ ❑ Is the overflow clear of excessive solids/pin floc? 0 ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) ❑ ❑ ❑ Comment: The condition of the lower #2 clarifier was much improved since the last inspection in 2019. The scimmer arm was operational and the weirs are cleaned weekly. The upper #1 clarifier was not in operation. There has been work done, under the ATC, on the gravity fed piping between the upper clarifer #1 and the upper aeration basin. Aerobic Digester Yes No NA NE Is the capacity adequate? 0 ❑ ❑ ❑ Is the mixing adequate? ❑ 0 ❑ ❑ Is the site free of excessive foaming in the tank? 0 ❑ ❑ ❑ # Is the odor acceptable? 0 ❑ ❑ ❑ # Is tankage available for properly waste sludge? 0 ❑ ❑ ❑ Comment: The digester has been cleared of the vegetation and trees found durinq the last inspection. The new floatinq aerator has been ordered and waiting for delivery in the next 2-3 weeks. Installation and start up of the aerator is scheduled for the end of January 2021. Disinfection -Gas Are cylinders secured adequately? Yes No NA NE ■ ❑ ❑ ❑ Page# 7 DocuSign Envelope ID: B3EAFE22-6DE4-4AA2-A516-9B80E8AECF9E Permit: NCO026000 Owner - Facility: Tabor City WWTP Inspection Date: 12/03/2020 Inspection Type: Compliance Evaluation Disinfection -Gas 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? (1000- - ) If yes, then when was the RMP last updated? Yes No NA NE ■ ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ■ ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ Comment: The contact chamber is cleaned —every 3 months. Recently the auto switch boxes and hoses for the gas cylinders have been replaced. The ATC includes construction of a new dual channel chlorine contact chamber and replacing the gas disinfection system with a new liquid chlorination/dechlorination system. De -chlorination Yes No NA NE Type of system ? Gas Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ ❑ Is storage appropriate for cylinders? 0 ❑ ❑ ❑ # Is de -chlorination substance stored away from chlorine containers? ❑ ❑ ❑ Are the tablets the proper size and type? ❑ ❑ 0 ❑ Comment: No comment. Are tablet de -chlorinators operational? ❑ ❑ 0❑ Number of tubes in use? Comment: No comment. Effluent Sam plinq Yes No NA NE Is composite sampling flow proportional? ❑ ❑ ❑ Is sample collected below all treatment units? 0 ❑ ❑ ❑ Is proper volume collected? ❑ ❑ ❑ 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# 8 DocuSign Envelope ID: B3EAFE22-6DE4-4AA2-A516-9B80E8AECF9E Permit: NC0026000 Owner - Facility: Tabor City WWTP Inspection Date: 12/03/2020 Inspection Type: Compliance Evaluation Effluent Sam plinq Yes No NA NE Comment: The effluent composite sampler is a portable Isco unit that requires ice. It is stored at the contact chamber area under a plastic trash can for protection from the elements. The CAP lists replacement of both the influent and effluent portable units with new refrigerated models. Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? 0 ❑ ❑ ❑ Are the receiving water free of foam other than trace amounts and other debris? 0 ❑ ❑ ❑ If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ 0 ❑ Comment: A small amount of solids were observed within the discharge channel. Page# 9