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Home My WebLink AboutNC0085120_Compliance Evaluation Inspection_20221005ROY COOPER Governor ELIZABETH S. BISER Secretary RICHARD E. ROGERS, JR. Director Jason Collinsworth, Maintenance Manager Lowes Companies, Inc. 711 Tomlin Mill Road Statesville, NC 28625 SUBJECT: Compliance Evaluation Inspection Lowes RDC 960 WWTP NPDES Permit No. NC00085120 Iredell County Dear Mr. Collinsworth: NORTH CAROLINA Environmental Quality October 5, 2022 Enclosed is a copy of the Compliance Evaluation Inspection (CEI) Report for the inspection conducted at the subject facility on October 4, 2022, 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. Enclosure: Inspection Report Cc: NPDES Program Files - Laserfiche DILLORIN _E Sincerely, DocuSigned by: Ft1.1440/ H 1%.1444 F161 FB69A2D84A3... Andrew H. Pitner, P.G. Assistant Regional Supervisor Water Quality Regional Operations Section Mooresville Regional Office Division of Water Resources, NCDEQ North Carolina Department of Environmental Quality I Division of Water Resources Mooresville Regional Office 1610 East Center Avenue. Suite 301 1 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 1 IN Code I 2 IL NPDES yr/mo/day Inspection Type Inspector Fac I 3 I NC0085120 111 121 22/10/04 117 18110 19 I S I 201 Type 21IIIIII IIIIIIIIIIIIIIIIII I IIIIII IIIIIIIIIII P6 Inspection 67I2.0 Work Days Facility Self -Monitoring I 70I4 Evaluation Rating I 71IN B1 I 72 QA I N I 731 I I I Reserved 74 751 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 permit Number) Iredell Distribution Center WWTP 711 Tomlin Mill Rd Olin NC 28660 Entry Time/Date 09:18AM 22/10/04 Permit Effective Date 19/05/01 Exit Time/Date 12:OOPM 22/10/04 Permit Expiration Date 24/03/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Madeline Kay McIntyre/ORC/704-876-8500/ William L Gregory//704-876-8500 / Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Tim Grady,711 Tomlin Mill Rd Statesville NC 28625//704-876-8500/ 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 -Docusigned by: DWR/MRO WQ/704-663-1699 Ext.2192/ 10/5/2022 '-A61696D9OCC3437... Signature of Mana Andrew Pitner eeCiftcC'A"FUfewer Agency/Office/Phone and Fax Numbers Date Ar"',uv H PR/MRO WQ/704-663-1699 Ext.2180/ 10/5/2022 '-F161FB69A2D84A3... EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 1 NPDES yr/mo/day 31 NC0085120 111 121 22/10/04 I17 Inspection Type 18 [j 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# 2 Permit: NC0085120 Inspection Date: 10/04/2022 Owner - Facility: Iredell Distribution Center 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 last compliance evaluation inspection at this facility was performed by DWR staff on 8/18/20. 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 • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • • ❑ ❑ ❑ ❑ ❑ • ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ • ❑ Comment: The records reviewed during the inspection were organized and well maintained. Discharge Monitoring Reports (eDMRs) were reviewed from September 2021 through August 2022. No effluent limit violations were reported and all monitoring frequencies were correct. Page# 3 Permit: NC0085120 Inspection Date: 10/04/2022 Owner - Facility: Iredell Distribution Center WWTP Inspection Type: Compliance Evaluation 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 field analyses (dissolved oxygen, pH, and temperature) are performed under Lowes' field laboratory certification #5016. Statesville Analytical has also been contracted to provide analytical support. The ORC and staff must ensure the temperature measuring device (pH or dissolved oxygen meter) used for compliance is verified (and documented) against a NIST traceable temperature -measuring device every twelve months. One of the pH buffers had expired; however, a new buffer was available on -site for meter calibration prior to the next compliance sampling event. All effluent samples must be properly preserved (on ice, etc.) within fifteen minutes of sample collection. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? ❑ El • El Is sample collected below all treatment units? • ❑ El El Is proper volume collected? • El El El Is the tubing clean? ❑ El • ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 El El • El degrees Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type • El El El representative)? Comment: The subject permit requires effluent grab samples. 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 MODE 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 are being performed and documented. Bar Screens Type of bar screen a.Manual Yes No NA NE • Page# 4 Permit: NC0085120 Inspection Date: 10/04/2022 Owner - Facility: Iredell Distribution Center WWTP Inspection Type: Compliance Evaluation Bar Screens Yes No NA NE 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: • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Equalization Basins Yes No NA NE 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? • ❑ ❑ ❑ Comment: The facility is equipped with three equalization/surge tanks; however, only two were in service. Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Diffused Is the basin free of dead spots? • ❑ ❑ ❑ Are surface aerators and mixers operational? ❑ ❑ • ❑ Are the diffusers operational? • ❑ ❑ ❑ Is the foam the proper color for the treatment process? ■ ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? • ❑ ❑ ❑ Is the DO level acceptable? • ❑ ❑ ❑ Is the DO level acceptable?(1.0 to 3.0 mg/I) • ❑ ❑ ❑ Comment: Aqueous lime and soda ash are added to the aeration basin to maintain appropriate alkalinity/pH levels. Secondary Clarifier Is the clarifier free of black and odorous wastewater? • Yes No NA NE ❑ ❑ ❑ Page# 5 Permit: NC0085120 Inspection Date: 10/04/2022 Owner - Facility: Iredell Distribution Center WWTP Inspection Type: Compliance Evaluation Secondary Clarifier Yes No NA NE Is the site free of excessive buildup of solids in center well of circular clarifier? Are weirs level? Is the site free of weir blockage? Is the site free of evidence of short-circuiting? Is scum removal adequate? Is the site free of excessive floating sludge? Is the drive unit operational? Is the return rate acceptable (low turbulence)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) Comment: 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 • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ Comment: The flow meter is calibrated twice per year and was last calibrated on 8/10/22 by Clearwater. The ORC and staff must ensure that the totalizer readings are recorded on a 24-hr. basis. Disinfection - UV Are extra UV bulbs available on site? Are UV bulbs clean? Is UV intensity adequate? Is transmittance at or above designed level? Is there a backup system on site? Is effluent clear and free of solids? Comment: Pump Station - Effluent Is the pump wet well free of bypass lines or structures? Are all pumps present? Are all pumps operable? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 6 Permit: NC0085120 Inspection Date: 10/04/2022 Owner - Facility: Iredell Distribution Center WWTP Inspection Type: Compliance Evaluation Pump Station - Effluent Yes No NA NE Are float controls operable? • ❑ ❑ ❑ Is SCADA telemetry available and operational? ❑ El • El Is audible and visual alarm available and operational? • ❑ ❑ ❑ 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: The effluent appeared clear with no floatable solids or foam. The receiving stream did not appear to be negatively impacted. Aerobic Digester Yes No NA NE Is the capacity adequate? ■ ❑ ❑ ❑ Is the mixing adequate? • El ❑ ❑ Is the site free of excessive foaming in the tank? • El El El # Is the odor acceptable? • ❑ ❑ ❑ # Is tankage available for properly waste sludge? ■ El El El Comment: Myers Septic Service has been contracted for the removal and disposal of sludge. 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 tested under load (automatic) on a weekly basis. The on -site maintenance staff periodically services the generator. Page# 7