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Home My WebLink AboutNC0039594_Compliance Evaluation Inspection_20211015ROY COOPER Governor ELIZABETH S. BISER Secretary S. DANIEL SMITH Director Todd Herms, Town Manager Town of Maiden 19 North Main Avenue Maiden, North Carolina 28650 Dear Mr. Herms: NORTH CAROLINA Environmental Quality October 15, 2021 Subject: Compliance Evaluation Inspection Town of Maiden WWTP NPDES Permit No. NC0039594 Catawba County Enclosed is a copy of the Compliance Evaluation Inspection (CEI) Report for the inspection conducted at the subject facility on October 14, 2021, by Mr. Wes Bell of this Office. Please advise the facility's Operator -in -Responsible Charge (ORC) of our findings by forwarding a copy of the enclosed report. Should you have any questions concerning this report, please do not hesitate to contact Mr. Bell at (704) 235-2192, or via email at wes.bell@ncdenr.gov. Enclosure: Inspection Report NORTH Dep®rlmont of Environmental Onolit Sincerely, —DocuSigned by: l44 44tw H Pam► F161FB69A2D84A3... fo r W. Corey Basinger, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ North Carolina Department of Environmental Quality 1 Division of Water Resources Mooresville Regional Office 1610 East Center Avenue, Suite 301 I Mooresville, North Carolina 28115 704.663.1699 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 Code 1 IN I 2 21 1 1 1 1 L 1 NPDES yr/mo/day Inspection 3 I NC0039594 111 121 21/10/14 117 Type 1810I I I 1 1 1 Inspector Fac Type 191 S I 2011 1 1 1 1 11 1 1 1 I I I 1 1 1 1 1 1 I I I I I 1 11 1 1 1 I 1 P6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved 67I2.0 I 70I4 I 71IN I 72 I N I 731 1 74 751 I I 1 I I I I I I 180 l Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES oermit Number) Maiden WWTP 2090 W Finger St Maiden NC 28650 Entry Time/Date 09:10AM 21/10/14 Permit Effective Date 21/08/01 Exit Time/Date 11:50AM 21/10/14 Permit Expiration Date 26/07/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Timothy Ray Hedrick/ORC/828-428-5032/ Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Todd Herms,19 N Main Ave Maiden NC 28650//828-428-5000/8284285017 No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenar Records/Reports Self -Monitoring Progran Sludge Handling DispoFacility 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) Wes Bell of Inspector(s) Agency/Office/Phone and Fax Numbers Date �Docusiyned by: DWR/MRO WQ/704-663-1699 Ext.2192/ 10/15/2021 "-A61696D90CC3437... Signature of Man Andrew Pitn ents�n d viewer Agency/Office/Phone and Fax Numbers Date r a 4'I cM' H P * WR/MRO WQ/704-663-1699 Ext.2180/ 10.15.21 F161F869A2D84A3, EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 1 31 NPDES yr/mo/day NC0039594 111 121 21/10/14 117 Inspection Type 18 [j 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) On -site Representatives: The following Town of Maiden personnel were in attendance during the inspection: Mr. Tim Hedrick, Mr. Chris Bagshaw and Mr. Steve Schronce. Page# 2 Permit: NC0039594 Inspection Date: 10/14/2021 Owner - Facility: Maiden WWTP 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 El El • ❑ application? Is the facility as described in the permit? • El El El # Are there any special conditions for the permit? El El • El Is access to the plant site restricted to the general public? • ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? • El El El Comment: The Town only had one SIU (CIU) that ceased the discharge of process wastewater in August 2018. The Division approved the SIU drop request on 1/2/2019 with the Town's Industrial Pretreatment Program being placed on an inactive status. The last compliance evaluation inspection at this facility was performed by DWR staff on 10/24/19. Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? • El ❑ ❑ 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? • El El El 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? ■ El ❑ ❑ Page# 3 Permit: NC0039594 Inspection Date: 10/14/2021 Owner - Facility: Maiden WWTP Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Comment: The records reviewed during the inspection were organized and well maintained. Discharge monitoring reports (eDMRs) were reviewed for the period October 2020 through September 2021. No effluent limit violations were reported and all monitoring frequencies were correct. The eDMRs from February 2021 through September 2021 will be reviewed and revised/resubmitted if applicable, to correct the effluent silver results from 5 uq/L to <5 uq/L. Laboratory 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ Comment: On -site effluent field analyses (conductivity, dissolved oxygen, pH, temperature and total residual chlorine) are performed under the Town's field laboratory certification #5532. Water Tech Labs, Inc. and Meritech (chronic toxicity) have also been contracted to provide analytical support. The actual pH check standard value (following calibration) should be recorded (instead of a check mark) for all future check standard verifications. In addition, the theorectical dissolved oxygen (DO) value and the actual DO value should be documented for the DO meter calibrations (initial and post calibration verification). 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: The subject permit requires influent BOD and TSS composite samples. The facility staff must ensure to document the monthly sampler aliquot verifications in the future. Effluent Sampling Is composite sampling flow proportional? Is sample collected below all treatment units? Is proper volume collected? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 4 Permit: NC0039594 Inspection Date: 10/14/2021 Owner - Facility: Maiden WWTP Inspection Type: Compliance Evaluation Effluent Sampling Yes No NA NE 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: The subject permit requires composite and grab effluent samples. The facility staff must ensure to document the monthly sampler aliquot verifications in the future. Upstream / Downstream Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type, ❑ ❑ ❑ and sampling location)? 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? Comment: The wastewater treatment plant appeared to be properly operated and well maintained. Process control measurements were being performed and the documentation was being maintained on -site. The facility is equipped with a telemetry type alarm notification system (Mission Control) to alert staff of selected alarm conditions. Bar Screens 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? Yes No NA NE • • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Screenings and grit are disposed at the County Landfill. The dumpster housing the bar screenings had leaked wastewater onto the asphalt driveway along the curbing. The wastewater was contained and staff indicated that the affected area would be properly cleaned up with all wastewater being properly disposed. The facility staff must ensure all leakage from this dumpster is properly disposed back into the WWTP to prevent an unpermitted discharge of wastewater into the stormwater drainage system. Page# 5 Permit: NC0039594 Inspection Date: 10/14/2021 Owner - Facility: Maiden WWTP Inspection Type: Compliance Evaluation Flow Measurement - Influent # 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 flow meter is calibrated annually and was last calibrated on 12/21/20 by Clearwater, Inc. Yes No NA NE • ❑ ❑ ❑ ❑ ❑ • ❑ 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: A grit pump was in the process of being repaired. 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? ■ ❑ ❑ ❑ Are all pumps present? • ❑ El El Are all pumps operable? • El El El Are float controls operable? • El ❑ ❑ Is SCADA telemetry available and operational? • El El El Is audible and visual alarm available and operational? ❑ ❑ • El Comment: The high water alarm system (telemetry type) operated properly during the on -site test. Sequencing Batch Reactors Type of operation: Is the reactor effluent free of solids? Does minimum fill time correspond to the peak hour flow rate of the facility? Is aeration and mixing cycled on and off during fill? The operator understands and can explain the process? Yes No NA NE Duplex ❑ ❑ • ❑ ❑ ❑ • ❑ Page# 6 Permit: NC0039594 Inspection Date: 10/14/2021 Owner - Facility: Maiden WWTP Inspection Type: Compliance Evaluation Sequencing Batch Reactors Yes No NA NE Comment: Both SBRs were in service and each train is equipped with two surface aerators (all operational). The mixed liquor suspended solids appeared to be well mixed and adequately oxygenated. 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 • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ Comment: The clarified effluent from the SBRs is conveyed to a post equalization basin prior to the chlorine contact chambers. Disinfection -Liquid Is there adequate reserve supply of disinfectant? (Sodium Hypochlorite) Is pump feed system operational? 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? Comment: Both chlorine contact chamber trains were in service. De -chlorination Type of system ? 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE Liquid ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ Page# 7 Permit: NC0039594 Inspection Date: 10/14/2021 Owner - Facility: Maiden WWTP Inspection Type: Compliance Evaluation De -chlorination Yes No NA NE 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: The effluent appeared clear with no floatable solids or foam. Yes No NA NE • ❑ ❑ ❑ Aerobic Digester Yes No NA NE Is the capacity adequate? ■ ❑ ❑ ❑ Is the mixing adequate? ■ ❑ ❑ ❑ Is the site free of excessive foaming in the tank? • ❑ El ❑ # Is the odor acceptable? • El El El # Is tankage available for properly waste sludge? • El ❑ ❑ Comment: Both aerobic digesters were operational and in service. Wastewater solids are transported (by WWTP staff) to the Regional Compost facility in Catawba County for final treatment/disposal. 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 exercised weekly and placed under load monthly. Clark Power Services has been contracted to service the generator twice per year. Page# 8