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Home My WebLink AboutNC0021733_NC0021733 Compliance Evaluation Inspection Report_20230622EPA United States Environmental Protection Agency 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 Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 N 52 NC0021733 23/05/18 C S31112171819 20 21 66 Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved------------------- N67707172 73 74 75 80 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) Marshall WWTP Blannahassett Is Rd Marshall NC 28753 Entry Time/Date Permit Effective Date Exit Time/Date Permit Expiration Date 10:00AM 23/05/18 22/07/01 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Donald G Byers/ORC// Other Facility Data 12:00PM 23/05/18 26/09/30 Name, Address of Responsible Official/Title/Phone and Fax Number Donald G Byers,238 Brown Rd Pisgah Forest NC 287689622//828-577-9916/Contacted No 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 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 Mara G Chamlee DWR/ARO WQ/828-296-4500/ Daniel J Boss DWR/ARO WQ/828-296-4658/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page#1 DocuSign Envelope ID: 1685E2AD-BBBD-4410-B7E3-81874D080621 NPDES yr/mo/day 23/05/18 Inspection Type C3111218 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Mara Chamlee and Daniel Boss, with the Asheville Regional Office, conducted a Compliance Evaluation Inspection of the Town of Marshall WWTP on May 18, 2023. This inspection was conducted to determine whether the facility is being operated and maintained in compliance with NPDES Permit No. NC0021733. Mr. Don Byers (ORC, Byers Environmental) was present and assisted with the inspection. The following items were noted during the inspection: 1. Permit - The permit includes UV disinfection as the primary method, however at present the UV is no longer functional and the primary method being used at the facility is liquid chlorination and dechlorination. Additionally, the permit includes drying beds which are also no longer functional at the facility. The following compliance issues were noted during the inspection: 1. Oxidation Ditches - High solids throughout the plant is resulting in undesirable high settleability. After 30 minutes the settleometer read 960 mL out of 1000 mL and therefore settleabilty was 4%. The following violations were noted during the inspection: 1. Secondary Clarifier - The plow arm at the bottom of the clarifier is broken and not operational. This is causing very high solids throughout the plant resulting in maintanance and operational difficulties . NC0021733 17 (Cont.) Page#2 DocuSign Envelope ID: 1685E2AD-BBBD-4410-B7E3-81874D080621 Permit:NC0021733 Inspection Date:05/18/2023 Owner - Facility: Inspection Type: Marshall WWTP Compliance Evaluation 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? # Are there any special conditions for the permit? Is access to the plant site restricted to the general public? Is the inspector granted access to all areas for inspection? The UV units listed on the permit are no longer operational and should be removed from the permit. The liquid chlorination that is listed as the backup disinfection system on the permit is the primary disinfection system. See summary for details. Comment: 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? Process controls analyzed include pH, DO, sludge judge, settleability, and MLSS. MLSS is evaluated every few months and Mr. Byers indicated that it was last read a couple months ago in the 8-10,000 range. Mr. Byers also indicated that both aerators and the RAS pumps had been replaced in June 2018. Comment: 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? 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? Page#3 DocuSign Envelope ID: 1685E2AD-BBBD-4410-B7E3-81874D080621 Permit:NC0021733 Inspection Date:05/18/2023 Owner - Facility: Inspection Type: Marshall WWTP Compliance Evaluation Record Keeping Yes No NA NE 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? Comment: Influent Sampling Yes No NA NE # 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? The influent sampler was last calibrated May 2023. The refrigerated sample read 2 degrees Celsius at the time of the inspection. Comment: Bar Screens Yes No NA NE 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? Mr. Byers indicated that the bar screen is cleaned daily and that the screenings are disposed of in a dumpster on site. The bar screen was replaced in 2009. Comment: Oxidation Ditches Yes No NA NE 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? Page#4 DocuSign Envelope ID: 1685E2AD-BBBD-4410-B7E3-81874D080621 Permit:NC0021733 Inspection Date:05/18/2023 Owner - Facility: Inspection Type: Marshall WWTP Compliance Evaluation Oxidation Ditches Yes No NA NE Are settleometer results acceptable (> 30 minutes)? Is the DO level acceptable?(1.0 to 3.0 mg/l) Are settelometer results acceptable?(400 to 800 ml/l in 30 minutes) Settleability was undesirably high in the oxidation ditches as the settleometer read 960 mL out of 1000 mL after 30 minutes. See summary for details. Comment: Secondary 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? 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 ¼ of the sidewall depth) The sludge blanket was undesirably high. At the time of the inspection, the sludge judge measured 10.5 ft out of a 12 ft deep clarifier. Mr. Byers indicated that the plow arm at the bottom of the clarifier has a broken shear pin and is not operational, causing the high sludge blanket. See summary for details. Comment: 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: Disinfection-Liquid Yes No NA NE Is there adequate reserve supply of disinfectant? (Sodium Hypochlorite) Is pump feed system operational? Page#5 DocuSign Envelope ID: 1685E2AD-BBBD-4410-B7E3-81874D080621 Permit:NC0021733 Inspection Date:05/18/2023 Owner - Facility: Inspection Type: Marshall WWTP Compliance Evaluation Disinfection-Liquid Yes No NA NE Is bulk storage tank containment area adequate? (free of leaks/open drains) 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? The permit lists UV disinfection as the primary method and liquid as the backup. However, the plant is operating with liquid chlorination (12.5% chlorine) and dechlorination as the primary methods of disinfection. 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? # Is de-chlorination substance stored away from chlorine containers? Comment: Are the tablets the proper size and type? Are tablet de-chlorinators operational? Number of tubes in use? Comment: 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 flow meter? The flow meter was last calibrated on May 16, 2023 by K.D.T. Service Technologies.Comment: 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? The effluent pipe is subaqueous. The right of way to the outfall was overgrown, and therefore inspectors did not access the effluent pipe to assess the recieving waters. Comment: Effluent Sampling Yes No NA NE Page#6 DocuSign Envelope ID: 1685E2AD-BBBD-4410-B7E3-81874D080621 Permit:NC0021733 Inspection Date:05/18/2023 Owner - Facility: Inspection Type: Marshall WWTP Compliance Evaluation 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)? The composite sampler refridgerator temperature read 3.5 degrees Celsius at the time of the inspection. Comment: Solids Handling Equipment Yes No NA NE Is the equipment operational? Is the chemical feed equipment operational? 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? The permit includes drying beds which are no longer in use at the facility.Comment: Standby Power Yes No NA NE 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? Mr. Byers indicated that the generator automatically exercises once per week and that approximately every three months it is tested by interrupting the primary power source. He stated that there is not an emergency fuel agreement, however in the case of such an emergency they would be in contact with the fuel vendor. Comment: Page#7 DocuSign Envelope ID: 1685E2AD-BBBD-4410-B7E3-81874D080621