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Home My WebLink AboutNC0032662_Inspection_20181101NORTH CAROL NA ROY COOPER Envrranrh#1t1G1 QUdlfly G&V 01tw MICHAEL S. REGAL Secr�rary LfNDA CULPEPPER In redm D,'rsctor 1 November 2018 Mr. Jason Brown, City Manager City of Claremont Post Office Box 446 Claremont, North Carolina 28610 Subject: Compliance Evaluation Inspection City of Claremont/North WWTP NPDES Permit No. NCO032662 Catawba County Dear Mr. Brown: Enclosed is a copy of the Compliance Evaluation Inspection Report for the inspection conducted at the subject facility on October 24, 2018, 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. Should you have any questions concerning this letter, please do not hesitate to contact Mr. Bell at (704) 235-2192, or via email at wes.bell@ncdenr.gov. Enclosure: Inspection Report Sincerely, DocuSigned by: A4-014tW H PZU" F 161 FB69A2D84A3... For W. Corey Basinger, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ EQ.:> "-mr North Carolina Department of Environmental Quality I Division of Water Resources 610 East Center Avenue I Suite 301I Mooresville, North Carolina 28115 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 1 2 15 I 3 I NCO032662 111 12 I 18/10/24 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 71 [.. I 72 73 L_LJ74 751 I I I I I I I80 u 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) 09:10AM 18/10/24 16/01/01 North WWTP Centennial Blvd Exit Time/Date Permit Expiration Date Claremont NC 28610 10:20AM 18/10/24 20/07/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Kenneth Joseph Twardzik/ORC/828-228-9638/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Jason A Brown,PO Box 446 Claremont NC 28610/City Manager/828-466-7255/ 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 cuSigned by: Wes Bell Be& MRO WQ//704-663-1699 Ext.2192/ 11/1/2018 E�: 96D90CC3437... S' need b �% kievie�er Agency/Office/Phone and Fax Numbers Date Signature of ManagrX,t" H MRO Andrew Pitner WQ//704-663-1699 Ext.21 11/1/18 1`161 FB69AMUA3... EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type NCO032662 I11 121 18/10/24 117 18 JCJ Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# Permit: NCO032662 Owner - Facility: North WWTP Inspection Date: 10/24/2018 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 last compliance evaluation inspection was performed at the facility on 8/8/17 by DWR staff. 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)? ❑ ❑ ❑ Are analytical results consistent with data reported on DMRs? 0 ❑ ❑ ❑ 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? ❑ ❑ ❑ 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: The records reviewed during the inspection were organized and well maintained. Discharge Monitoring Reports (eDMRs) were reviewed for the period September 2017 through August 2018. No effluent limit violations were reported and all monitoring frequencies were correct. Laboratory Yes No NA NE Page# 3 Permit: NCO032662 Owner - Facility: North WWTP Inspection Date: 10/24/2018 Inspection Type: Compliance Evaluation 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: Influent and effluent analvses (includina field oarameters) are Derformed under the Citv of Hickory's Regional Laboratory Certification #203. Pace Analytical Services, Inc. and ETT Environmental, Inc. (toxicity) have also been contracted to provide analytical support. The ORC must ensure to perform post -analysis calibration checks on the dissolved oxygen, PH, and total residual chlorine meters following field analyses at multiple sites. Post -analysis calibration checks must be performed in accordance with the NC Wastewater/Groundwater laboratory certification approved procedures for the analyses of dissolved oxygen, pH, and total residual chlorine. The pH meter's temperature measuring deviated more than four degrees Celsius from the NIST traceable thermometer during the verification process. The ORC and staff can still use the probe to measure PR however, the temperatures cannot be used for compliance monitoring. 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 Dermit reauires influent BOD and TSS composite samDles. The sampler was collecting 250 ml. aliquots and the internal ambient temperature was below zero degrees Celsius. The ORC and staff perform (and document) multiple aliquot verifications/calibrations during each month. The ORC and staff must ensure that the actual internal sampler temperatures (influent and effluent) are documented and not <6 degrees Celsius. 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 ❑ ❑ ❑ Is the tubing clean? 0 ❑ ❑ ❑ Page# 4 Permit: NCO032662 Inspection Date: 10/24/2018 Effluent Sampling Owner - Facility: North WWTP Inspection Type: Compliance Evaluation Yes No NA NE # 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 ❑ ❑ ❑ representative)? Comment: The subject permit requires composite and grab effluent samples. The sampler was collecting 160 mi. aliquots and the internal ambient temperature was four degrees Celsius. The ORC and staff perform (and document) multiple aliquot verifications/calibrations during 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. The ORC and staff implement a comprehensive process control program with all measuremets being properly 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 are ultimately disposed into a permitted landfill. Aeration Basins Mode of operation Type of aeration system Is the basin free of dead spots? Yes No NA NE El ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE Ext. Air Diffused ■ ❑ ❑ ❑ Page# 5 Permit: NCO032662 Inspection Date: 10/24/2018 Owner - Facility: North WWTP Inspection Type: Compliance Evaluation Aeration Basins Yes No NA NE Are surface aerators and mixers operational? 0 ❑ ❑ ❑ Are the diffusers operational? 0 ❑ ❑ ❑ Is the foam the proper color for the treatment process? 0 ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? ❑ ❑ 0 ❑ Is the DO level acceptable? 0 ❑ ❑ ❑ Is the DO level acceptable?(1.0 to 3.0 mg/1) ❑ ❑ 0 ❑ Comment: The 0.040 MGD train is equipped with diffused aeration and the 0.060 MGD train is equipped with mechanical and diffused aeration. Soda ash is added on an as -needed basis to maintain appropriate alkalinity/pH levels. 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)? 0 ❑ ❑ ❑ Is the overflow clear of excessive solids/pin floc? 0 ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) 0 ❑ ❑ ❑ Comment: Disinfection -Gas Yes No NA NE Are cylinders secured adequately? 0 ❑ ❑ ❑ Are cylinders protected from direct sunlight? 0 ❑ ❑ ❑ Is there adequate reserve supply of disinfectant? 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 ❑ ❑ ❑ Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? ❑ ❑ 0 ❑ If yes, then is there a Risk Management Plan on site? ❑ ❑ 0 ❑ If yes, then what is the EPA twelve digit ID Number? (1000- Page# 6 Permit: NC0032662 Inspection Date: 10/24/2018 Disinfection -Gas If yes, then when was the RMP last updated? Comment: Owner - Facility: North WWTP Inspection Type: Compliance Evaluation 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? Yes No NA NE Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ Comment: The flow meter is calibrated twice per year and was last calibrated on 7/17/18 by Diversified Integration. De -chlorination Yes No NA NE Type of system ? Gas 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 Is right of way to the outfall properly maintained? 0 ❑ ❑ ❑ 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 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 ❑ ❑ ❑ Page# 7 Permit: NC0032662 Inspection Date: 10/24/2018 Aerobic Digester # Is tankage available for properly waste sludge? Owner - Facility: North WWTP Inspection Type: Compliance Evaluation Yes No NA NE ■ ❑ ❑ ❑ Comment: Wastewater solids in the aerated sludge holding tanks are transported to the Hickory Regional Compost Facility for further processing and disposal (Class A — compost). Page#