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Home My WebLink AboutNC0039594_Compliance Evaluation Inspection_20191029ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Todd Herms, Town Manager Town of Maiden 19 North Main Avenue Maiden, North Carolina 28650 Dear Mr. Herms: NORTH CAROLINA Environmental Quality October 29, 2019 Subject: Compliance Evaluation Inspection Town of Maiden WWTP NPDES Permit No. NCO039594 Catawba County Enclosed is a copy of the Compliance Evaluation Inspection Report for the inspection conducted at the subject facility on October 24, 2019, by Mr. Wes Bell of this Office. Please inform the facility's Operator -in -Responsible Charge (ORC) of our findings by forwarding a copy of the enclosed report. The report should be self-explanatory; however, should you have any questions concerning this report, please do not hesitate to contact Mr. Bell at (704) 235-2192 or at wes.bell@ncdenr.gov. Sincerely, EDocu Signed by: �s 44W ii P44,f4 F161FB69A2D84A3... for W. Corey Basinger, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ Enclosure: Inspection Report D Q � North Carolina Department of Environmental Quality I Division of Water Resources Mooresville Regional Office 1 610 East Center Avenue, Suite 301 1 Mooresville, North Carolina 28115 NORTH CAROLINA Da"MoM a enWmn�bl mwnq 704,663.1699 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 I 2 IF I 3 I NCO039594 111 12 I 19/10/24 I17 18 I S i 19 i G i 201 I 211111 I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I II I I I I I f6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved ------------------- 67 2.0 70 Id I 71 [.. I 72 73 L_LJ74 751 I I I I I I I80 I —I u 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 oermit Number) 09:35AM 19/10/24 17/07/01 Maiden WWTP 2090 W Finger St Exit Time/Date Permit Expiration Date Maiden NC 28650 01:00PM 19/10/24 20/07/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Timothy Ray Hedrick/ORC/828-428-5032/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Todd Herms,19 N Main Ave Maiden NC 28650/Town Manager/828-428-5000/8284285017 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 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 signedd by: DWR/MRO WQ/704-663-1699 Ext.2192/ 10/29/2019 2 r6 Wes Bell �`,'c'.D90CC343T Signature of Manag menPffVN9VdVer Agency/Office/Phone and Fax Numbers Date 44" H P 10. 29.19 Andrew Pitner R/MRO WQ/704-663-1699 Ext.2180/ F161FB69A2D84A3... EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type NC0039594 I11 121 19/10/24 117 18 ICI Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) On -site Representatives: The following Town personnel were in attendance during the inspection: Tim Hedrick/ORC, Chris Bagshaw/Backup ORC and Jeff Schronce/Operator-Maintenance. Page# Permit: NCO039594 Owner - Facility: Maiden WWTP Inspection Date: 10/24/2019 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? E ❑ ❑ ❑ 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 facility description will need to be updated during the next permit renewal process to remove blowers from the SBR tanks line item. Aeration is provided in the SBR tanks by surface aerators; however, blowers are used for the aerobic digesters. The last compliance evaluation inspection by DWR staff was performed on 10/17/17. 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? 0 ❑ ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? 0 ❑ ❑ ❑ Are analytical results consistent with data reported on DMRs? 0 ❑ ❑ ❑ Is the chain -of -custody complete? 0 ❑ ❑ ❑ 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? ❑ ❑ ❑ 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? ❑ ❑ ❑ Page# 3 Permit: NCO039594 Inspection Date: 10/24/2019 Record Keeping Owner - Facility: Maiden WWTP Inspection Type: Compliance Evaluation Yes No NA NE Comment: The records reviewed durina the inspection were oraanized and well maintained. Discharae Monitoring Reports (eDMRs) were reviewed for the period September 2018 throuqh August 2019. No effluent limit violations were reported and all monitoring frequencies were correct. Revised July and August 2019 eDMRs will be submitted to correct a fecal coliform result. In addition, a March 2019 eDMR will be revised to correct an effluent silver result (incorrectly reported by contracted lab). The ORC and staff must continue to ensure that the contracted labs use the 1.0 ua/L detection level for silver. 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 0 ❑ ❑ ❑ 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: On -site field analyses (dissolved oxygen, pH, temperature, conductivity, TRC) are performed under the Town's laboratory certification #5532. Water Tech Labs and R&A Labs have also been contracted to provide analytical support. The ORC and staff must ensure to report effluent total residual chlorine (TRC) values down to the lowest standard verified on the TRC meter (currently 15 ug/L based on the 4/4/19 annual curve verification). Influent Sampling Yes No NA NE # Is composite sampling flow proportional? 0 ❑ ❑ ❑ Is sample collected above side streams? 0 ❑ ❑ ❑ Is proper volume collected? 0 ❑ ❑ ❑ 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 sampling performed according to the permit? 0 ❑ ❑ ❑ Comment: The subiect permit requires composite BOD and TSS and influent samples. The sampler temperature was less than four degrees Celsius and collecting 120 mi. aliquots at the time of the inspection. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? 0 ❑ ❑ ❑ Is sample collected below all treatment units? 0 ❑ ❑ ❑ Is proper volume collected? 0 ❑ ❑ ❑ Page# 4 Permit: NCO039594 Owner - Facility: Maiden WWTP Inspection Date: 10/24/2019 Inspection Type: Compliance Evaluation Effluent Sampling Yes No NA NE 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)? Comment: The subiect permit reauires composite and arab effluent samDles. The sampler temperature was less than four degrees Celsius and collecting 250 mi. aliquots at the time of the inspection. The ORC and staff must ensure that all dissolved oxygen measurements on the effluent are reported on the applicable eDMR. Upstream / Downstream Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type, and 0 ❑ ❑ ❑ sampling location)? Comment: Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? 0 ❑ ❑ ❑ 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 facility appeared to be properly operated and well maintained. Process control measurements were being documented and maintained on -site. 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? Comment: Screenings and grit are disposed at the County Landfill by a contracted company. Flow Measurement - Influent # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 5 Permit: NCO039594 Inspection Date: 10/24/2019 Flow Measurement - Influent Owner - Facility: Maiden WWTP Inspection Type: Compliance Evaluation (If units are separated) Does the chart recorder match the flow meter? Yes No NA NE ❑ ❑ ■ ❑ Comment: The flow meter is calibrated annuallv and was last calibrated on 11/12/18 by Clearwater. This Office requests as part of the next annual flow meter calibration (by contracted company), a comparison of the head measurements from the current measurement location to the standardized head measurement location (2/3 distance in converging section from throat). A copy of this comparison/verification should be submitted to this Office once completed. 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: 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? 0 ❑ ❑ ❑ Are all pumps present? 0 ❑ ❑ ❑ Are all pumps operable? 0 ❑ ❑ ❑ Are float controls operable? 0 ❑ ❑ ❑ Is SCADA telemetry available and operational? 0 ❑ ❑ ❑ Is audible and visual alarm available and operational? ❑ ❑ 0 ❑ Comment: The telemetry type alarm system (high level) functioned properly during the on -site test. Sequencinq Batch Reactors Yes No NA NE Type of operation: Duplex 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? ❑ ❑ 0❑ The operator understands and can explain the process? ❑ ❑ ❑ Comment: Both SBR tanks were operational and in service. Each SBR is equipped with two surface aerators and a decanter. One of the aerators was in the process of being repaired. Page# 6 Permit: NC0039594 Owner - Facility: Maiden WWTP Inspection Date: 10/24/2019 Inspection Type: Compliance Evaluation Sequencing Batch Reactors Yes No NA NE 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? 0 ❑ ❑ ❑ Are float controls operable? 0 ❑ ❑ ❑ Are audible and visual alarms operable? ❑ ❑ 0 ❑ # Is basin size/volume adequate? 0 ❑ ❑ ❑ Comment: Disinfection -Liquid Yes No NA NE Is there adequate reserve supply of disinfectant? 0 ❑ ❑ ❑ (Sodium Hypochlorite) Is pump feed system operational? 0 ❑ ❑ ❑ Is bulk storage tank containment area adequate? (free of leaks/open drains) 0 ❑ ❑ ❑ Is the level of chlorine residual acceptable? 0 ❑ ❑ ❑ Is the contact chamber free of growth, or sludge buildup? 0 ❑ ❑ ❑ Is there chlorine residual prior to de -chlorination? 0 ❑ ❑ ❑ Comment: De -chlorination Yes No NA NE Type of system ? Liquid Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ 0 ❑ Is storage appropriate for cylinders? ❑ ❑ 0 ❑ # Is de -chlorination substance stored away from chlorine containers? 0 ❑ ❑ ❑ Comment: Are the tablets the proper size and type? ❑ ❑ 0 ❑ Are tablet de -chlorinators operational? ❑ ❑ 0 ❑ Number of tubes in use? Comment: Effluent Pipe Yes No NA NE Page# 7 Permit: NC0039594 Inspection Date: 10/24/2019 Owner - Facility: Maiden WWTP Inspection Type: Compliance Evaluation 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? ❑ ❑ 0 ❑ Comment: The effluent appeared clear with no floatable solids or foam. Aerobic Digester 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: Both aerobic digesters were operational and in service. Bio-solids are transported (by WWTP staff) to the Regional Compost Facility located in Hickory, N.C. for continued treatment and disposal. Standby Power Yes No NA NE Is automatically activated standby power available? 0 ❑ ❑ ❑ Is the generator tested by interrupting primary power source? 0 ❑ ❑ ❑ Is the generator tested under load? 0 ❑ ❑ ❑ Was generator tested & operational during the inspection? 0 ❑ ❑ ❑ Do the generator(s) have adequate capacity to operate the entire wastewater site? 0 ❑ ❑ ❑ Is there an emergency agreement with a fuel vendor for extended run on back-up power? 0 ❑ ❑ ❑ Is the generator fuel level monitored? 0 ❑ ❑ ❑ Comment: The generator is exercised weekly and placed under load monthly. The generator is tested/serviced twice per year by a contracted company (Clark Power Services). Page# 8