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Home My WebLink AboutNC0031836_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 NORTH CAROLINA Environmental Quality March 17, 2023 SUBJECT: Compliance Evaluation Inspection City of Statesville/Fourth Creek WWTP NPDES Permit No. NCO031836 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 7, 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 NCO031836 111 121 23/03/10 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) 09:20AM 23/03/10 19/03/01 Fourth Creek WWTP 693 Bell Farm Rd Exit Time/Date Permit Expiration Date Statesville NC 28687 01:OOPM 23/03/10 23/03/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Kenneth Andrew Galloway/ORC// Stephen E Littlejohn/// 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 Doc uSigned by: Wes Bell D"� DWR/MRO WQ/704-663-1699 Ext.2192/ 3/16/2023 E A:c,96D90=437... Signature of Man a49aA�viewer Agency/Office/Phone and Fax Numbers Date Andrew Pitn r AP'�'' ' H P41WR/MRO WQ/704-663-1699 Ext.2180/ 3/16/2023 F161 FB69A2D84A3.,. EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type NCO031836 I11 12I 23/03/10 117 18 i c i Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# Permit: NCO031836 Owner -Facility: Fourth Creek WWTP Inspection Date: 03/10/2023 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 0 ❑ ❑ ❑ application? Is the facility as described in the permit? 0 ❑ ❑ ❑ # Are there any special conditions for the permit? M ❑ ❑ ❑ 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 City implements a Division -approved Industrial Pretreatment Program. The Division received the City's permit renewal package on 9/20/2022. The last compliance evaluation inspection at this facility was performed by DWR staff on 1 /28/2021. Record Keeping 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ❑ ■ Page# 3 Permit: NCO031836 Inspection Date: 03/10/2023 Owner -Facility: Fourth Creek WWTP Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Comment: The records reviewed durinq the inspection were organized and well maintained. Effluent permit limit violations were reported in April 2022 (ammonia — monthly average), May 2022 (ammonia — monthly average) and July 2022 (copper — daily maximum). The Division has separately addressed these limit violations through the issuances of either a Notice of Violation (NOV) or NOV/civil penalty assessment. 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? ■ ❑ ❑ ❑ 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? ❑ ❑ ❑ ■ Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? ❑ ❑ ❑ ■ 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 Yes No NA NE # Is composite sampling flow proportional? 0 ❑ ❑ ❑ Is sample collected above side streams? 0 ❑ ❑ ❑ Is proper volume collected? ■ ❑ ❑ ❑ Is the tubing clean? ■ ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 0 ❑ ❑ ❑ degrees Celsius)? Is sampling performed according to the permit? 0 ❑ ❑ ❑ Comment: The subject permit requires influent BOD and TSS composite samples. The sampler tubing should be cleaned and/or replaced within the near future. The ORC and staff must ensure that the maximum amount of flow in between composite samples (aliquots) does not exceed 1/24th of the total expected flow for that sampling day. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? 0 ❑ ❑ ❑ Is sample collected below all treatment units? M ❑ ❑ ❑ Is proper volume collected? 0 ❑ ❑ ❑ Is the tubing clean? 0 ❑ ❑ ❑ Page# 4 Permit: NCO031836 Inspection Date: 03/10/2023 Owner -Facility: Fourth Creek WWTP Inspection Type: Compliance Evaluation Effluent Sampling # 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. Upstream / Downstream Sampling Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE ❑ ❑ ❑ 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 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 facilitv appeared to be properly operated and well maintained. The facility staff incorporate a comprehensive process control program with all measurements being documented and maintained on -site. Detailed operation & 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: Screenings are disposed at a permitted landfill. 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 5 Permit: NCO031836 Inspection Date: 03/10/2023 Owner -Facility: Fourth Creek WWTP Inspection Type: Compliance Evaluation Pump Station - Influent Yes No NA NE 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: Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Surface Is the basin free of dead spots? 0 ❑ ❑ ❑ Are surface aerators and mixers operational? ■ ❑ ❑ ❑ 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: Both aeration basin trains were in service. Each aeration basin is equipped with six platform aerators. 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? ■ ❑ ❑ ❑ 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: All three secondary clarifiers were in service. Page# 6 Permit: NCO031836 Inspection Date: 03/10/2023 Owner -Facility: Fourth Creek WWTP Inspection Type: Compliance Evaluation Pumps-RAS-WAS Yes No NA NE Are pumps in place? 0 ❑ ❑ ❑ Are pumps operational? 0 ❑ ❑ ❑ Are there adequate spare parts and supplies on site? ■ ❑ ❑ ❑ Comment: Disinfection -Liquid Yes No NA NE Is there adequate reserve supply of disinfectant? ■ ❑ ❑ ❑ (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? ■ ❑ ❑ ❑ 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)? M ❑ ❑ ❑ Is storage appropriate for cylinders? ❑ ❑ 0 ❑ # Is de -chlorination substance stored away from chlorine containers? 0 ❑ ❑ ❑ Are the tablets the proper size and type? ❑ ❑ ■ ❑ Comment: Aqueous sodium bisulfite is used for dechlorination. Are tablet de -chlorinators operational? ❑ ❑ 0 ❑ Number of tubes in use? 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. Page# 7 Permit: NCO031836 Owner -Facility: Fourth Creek WWTP Inspection Date: 03/10/2023 Inspection Type: Compliance Evaluation 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? ❑ ❑ ■ ❑ Comment: The effluent appeared clear with trace suspended solids and no foam. Aerobic Digester Yes No NA NE Is the capacity adequate? ■ ❑ ❑ ❑ 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? ■ ❑ ❑ ❑ Comment: The aerobic digester is equipped with three platform aerators. Solids Handling Equipment Yes No NA NE Is the equipment operational? 0 ❑ ❑ ❑ Is the chemical feed equipment operational? ■ ❑ ❑ ❑ Is storage adequate? 0 ❑ ❑ ❑ Is the site free of high level of solids in filtrate from filter presses or vacuum filters? 0 ❑ ❑ ❑ 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? 0 ❑ ❑ ❑ Comment: The belt filter press was operational and in service. Dewatered bio-solids are either lime stabilized and distributed to the public under Permit No. WQ0006245 or land applied (Class B product) under Permit No. WQ0014543. 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 ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Page# 8 Permit: NCO031836 Inspection Date: 03/10/2023 Standby Power Owner -Facility: Fourth Creek WWTP Inspection Type: Compliance Evaluation Yes No NA NE Comment: The backup generator is tested under load every ten (10) days and serviced quarterly by Power Generation & Control. The City also participates in a Load Management Program. Page#