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Home My WebLink AboutNC0020591_Compliance Evaluation Inspection_20230317ROY COOPER Governor ELIZABETH S. BISER Secretary RICHARD E. ROGERS, JR. Director Andy Smith City of Statesville Post Office Box I I I I Statesville, NC 28677 SUBJECT: Compliance Evaluation Inspection NORTH CAROLINA Environmental Quality March 17, 2023 City of Statesville/Third Creek WWTP NPDES Permit No. NCO020591 Iredell County Dear Mr. Smith: Enclosed is a copy of the Compliance Evaluation Inspection (CEI) Report for the inspection conducted at the subject facility on March 9, 2023, by Mr. Wes Bell of this Office. Please advise the facility's Operator -in -Responsible Charge (ORC) of our findings by forwarding the enclosed report. 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, DocuSigned by: A wNN,uft F161 FB69A2D84A3... Andrew H. Pitner, P.G. Assistant Regional Supervisor Water Quality Regional Operations Section Mooresville Regional Office Division of Water Resources, NCDEQ Enclosure: Inspection Report Cc: NPDES Program Files - Laserfiche DEQ� 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 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 u 3 I NCO020591 111 121 23/03/09 I17 18 LC] I 19 I s I 20L] 21111I 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 r6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved ------------------- 67 2.0 701d I 71 I„ I 72 I r., I 71 I 74 79 I I I I I I I80 L—I ty L-1 I I 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 Dermit Number) 09:10AM 23/03/09 20/02/01 Third Creek WWTP 444 Third Creek Rd Exit Time/Date Permit Expiration Date Statesville NC 28687 11:40AM 23/03/09 24/03/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Scott Austin/ORC/704-878-3438/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Ron Smith,PO Box 1111 Statesville NC 286871111//704-878-3584/ 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 Dispo: Facility 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) of Inspector(s) Agency/Office/Phone and Fax Numbers Date DocuSigned by: Wes Bell D"� DWR/MRO WQ/704-663-1699 Ext.2192/ 3/16/2023 EA61696D90=437... VG* ewer Agency/Office/Phone and Fax Numbers Date Signature of Mana[7F161FB69A2D84A3.. Andrew Pitne4 u`' H P'-bftR/MRO WQ/704-663-1699 Ext.2180/ 3/16/2023 . EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type NCO020591 I11 12I 23/03/09 117 18 i c i Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# Permit: NCO020591 Owner -Facility: Third Creek WWTP Inspection Date: 03/09/2023 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 ❑ ❑ ■ ❑ 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? ■ ❑ ❑ ❑ Comment: The City implements a Division -approved Industrial Pretreatment Program. The last compliance evaluation inspection at this facility was performed by DWR staff on 1 /26/2021. 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? ■ ❑ ❑ ❑ 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: NCO020591 Inspection Date: 03/09/2023 Owner -Facility: Third Creek WWTP Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Comment: The records reviewed durinq the inspection were organized and well maintained. Discharge Monitoring Reports (eDMRs) were reviewed from February 2022 through January 2023. No effluent limit and/or monitoring violations were reported. The Permittee must ensure that the annual WWTP performance report is submitted no later than sixty (60) days following the selected time period (calendar or fiscal year). 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: Influent and effluent (including field) analyses are performed under the City's on -site certified laboratory (Certification #181). Pace Analytical Services, Meritech Labs and Statesville Analytical have all been contracted to provide analytical support. 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? Comment: The subject permit requires influent BOD and TSS composite samples. Effluent Sampling 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)? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ Page# 4 Permit: NCO020591 Owner -Facility: Third Creek WWTP Inspection Date: 03/09/2023 Inspection Type: Compliance Evaluation Effluent Sampling Yes No NA NE Comment: The subject permit requires composite and grab effluent samples. Upstream / Downstream Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type, 0 ❑ ❑ ❑ and sampling location)? Comment: The Division has conditionally waived the instream monitoring requirements due to the City's participation in the Yadkin -Pee Dee River Basin Association. 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: The wastewater treatment facility appeared to be properly operated and well Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ maintained. The facility staff incorporate a comprehensive process control program with all measurements being documented and maintained on -site. Detailed operatio & maintenance records are also maintained on -site. The facility is also equipped with a SCADA system to assist the wastewater staff in treatment plant operations. 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: Pump Station - Influent 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? Yes No NA NE ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 5 Permit: NCO020591 Owner -Facility: Third Creek WWTP Inspection Date: 03/09/2023 Inspection Type: Compliance Evaluation Pump Station - Influent Yes No NA NE Is audible and visual alarm available and operational? ❑ ❑ 0 ❑ Comment: 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: Screenings and grit are disposed at a permitted landfill. Oxidation Ditches Yes No NA NE Are the aerators operational? 0 ❑ ❑ ❑ 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? 0 ❑ ❑ ❑ Is the DO level acceptable? 0 ❑ ❑ ❑ Are settleometer results acceptable (> 30 minutes)? 0 ❑ ❑ ❑ Is the DO level acceptable?(1.0 to 3.0 mg/1) 0 ❑ ❑ ❑ Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes) 0 ❑ ❑ ❑ Comment: Both oxidation ditches were operational and in service. Each oxidation ditch is equipped with anaerobic and anoxic cells. 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? ■ ❑ ❑ ❑ 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? ■ ❑ ❑ ❑ Is the site free of excessive floating sludge? ■ ❑ ❑ ❑ Is the drive unit operational? 0 ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? M ❑ ❑ ❑ Page# 6 Permit: NCO020591 Owner -Facility: Third Creek WWTP Inspection Date: 03/09/2023 Inspection Type: Compliance Evaluation Secondary Clarifier Yes No NA NE Is the overflow clear of excessive solids/pin floc? 0 ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) ■ ❑ ❑ ❑ Comment: Both secondary clarifiers were operational: however, only one clarifier was in operation due to low influent flows. Pumps-RAS-WAS Yes No NA NE Are pumps in place? ■ ❑ ❑ ❑ Are pumps operational? 0 ❑ ❑ ❑ Are there adequate spare parts and supplies on site? 0 ❑ ❑ ❑ Comment: Disinfection -Liquid Yes No NA NE Is there adequate reserve supply of disinfectant? 0 ❑ ❑ ❑ (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? 0 ❑ ❑ ❑ Is the contact chamber free of growth, or sludge buildup? 0 ❑ ❑ ❑ Is there chlorine residual prior to de -chlorination? 0 ❑ ❑ ❑ Comment: Flow Measurement - Effluent 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 flow meter is calibrated twice per year and was last calibrated on 10/26/2022 by Diversified Integration, Inc. 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 ❑ ❑ ❑ Are the tablets the proper size and type? ❑ ❑ 0 ❑ Page# 7 Permit: NCO020591 Inspection Date: 03/09/2023 De -chlorination Owner -Facility: Third Creek WWTP Inspection Type: Compliance Evaluation Yes No NA NE Comment: Aqueous sodium bisulfite is used for dechlorination. Post aeration is provided via surface aeration following dechlorination. 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? 0 ❑ ❑ ❑ If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ ■ ❑ Comment: The effluent appeared clear with no floatable solids or foam. The receiving stream did not appear to be negatively impacted. Fish were observed at the effluent discharge -. AT 11 Aerobic Digester 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: Both aerobic digesters were operational and in service. Solids Handling Equipment 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Comment: Both belt filter presses are operational; however, no dewatering was occurring during the inspection. Dewatered bio-solids are transported (by City staff) to the City's Fourth Creek WWTP for distribution (via lime stabilization) under Permit No. WQ0006245 or land application (Class B product) under Permit No. WQ0014543. Page# 8 Permit: NCO020591 Inspection Date: 03/09/2023 Owner - Facility: Third Creek WWTP 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 facility is equipped with two backup generators. The generators are tested under load every ten (10) days and serviced quarterly by Power Generation & Control. The City also participates in a Load Management Program. Page# 9