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Home My WebLink AboutNC0024937_Compliance Evaluation Inspection_20200915 (3)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 NCO024937 I11 121 20/09/01 I17 18LB] 19 I s I 201 I 6 211IIIII 111111III II III III1 I I IIIII IIIIIIIII II J Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved ------------------- 67 2.0 701d I 71 l� I 72 I r., I 71 I 74 79 L—I L-1 I I I I I I I I I80 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) 09:12AM 20/09/01 17/10/01 Charlotte -Sugar Creek WWTP 5301 Closeburn Rd Exit Time/Date Permit Expiration Date Charlotte NC 28217 12:10PM 20/09/01 22/05/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data William McDonald Allen/ORC/704-553-2121/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Jacqueline A Jarrell,5100 Brookshire Blvd Charlotte NC 28216/Operations Chief/704-336-4460/7043365081 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 Wes Bell cusigned by: DWR/MRO WQ/704-663-1699 Ext.2192/ 9/14/2020 2 re& E�: 96D90=437... Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date W. Corey Basinger DWR/Division of Water Quality/704-235-2194/ EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. DocuSigned by: ' 9/15/2020 AlaccsalAFvazs... Page# NPDES yr/mo/day Inspection Type NC0024937 I11 12I 20/09/01 117 18 IBI Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) On -Site Representatives: The following Charlotte Water personnel were in attendance during the inspection: Billy Allen/ORC, Donna Slachciak/Backup ORC, Joseph Lockler/Operations Manager and Muriel Steele/Water Quality Program Specialist. Page# Permit: NCO024937 Owner -Facility: Charlotte -Sugar Creek WWTP Inspection Date: 09/01/2020 Inspection Type: Bioassay Compliance 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: Charlotte Water has comDleted the Reliabilitv Imarovements Proiect at the wastewater treatment facility. Charlotte Water implements a Division approved Industrial Pretreatment Program. The last compliance evaluation inspection at this facility was performed by DWR staff on 3/15/18. 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 was being properly operated and well maintained. Charlotte Water staff incorporate a commendable process control program with all measurements being documented and maintained on -site. The wastewater staff has access to eiaht SCADA stations located throuahout the Dlant site. 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 operatc ❑ ❑ ❑ on each shift? Page# 3 Permit: NCO024937 Owner -Facility: Charlotte -Sugar Creek WWTP Inspection Date: 09/01/2020 Inspection Type: Bioassay Compliance Record Keeping Yes No NA NE Is the ORC visitation log available and current? 0 ❑ ❑ ❑ Is the ORC certified at grade equal to or higher than the facility classification? 0 ❑ ❑ ❑ Is the backup operator certified at one grade less or greater than the facility classification' M ❑ ❑ ❑ Is a copy of the current NPDES permit available on site? 0 ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? 0 ❑ ❑ ❑ Comment: The records reviewed durina the insDection were oraanized and well maintained. Discharae Monitoring Reports (eDMRs) were reviewed for the period July 2019 through June 2020. All monitoring frequencies were correct. A weekly average effluent CBOD violation was reported in February 2020. The Division has previously addressed this violation through the issuance of a Notice of Deficiency (NOD). 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 analyses (including field) are performed under the Charlotte Water Environmental Services Laboratory Certification #192. ETT Environmental and R&A Labs have also been contracted to perform chronic toxicity analyses. 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 subject permit requires influent CBOD and TSS composite samples. Weekly sampler aliquot verifications are performed and documented. Effluent Sampling Is composite sampling flow proportional? Yes No NA NE ■ ❑ ❑ ❑ Page# 4 Permit: NCO024937 Owner -Facility: Charlotte -Sugar Creek WWTP Inspection Date: 09/01/2020 Inspection Type: Bioassay Compliance Effluent Sampling Yes No NA NE Is sample collected below all treatment units? 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 the facility sampling performed as required by the permit (frequency, sampling type 0 ❑ ❑ ❑ representative)? Comment: The subject permit requires grab and composite effluent samples. Weekly sampler aliquot verifications are Derformed and documented. Bar Screens Yes No NA NE Type of bar screen a.Manual ❑ b.Mechanical Are the bars adequately screening debris? 0 ❑ ❑ ❑ Is the screen free of excessive debris? 0 ❑ ❑ ❑ Is disposal of screening in compliance? 0 ❑ ❑ ❑ Is the unit in good condition? 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: 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? M ❑ ❑ ❑ Are all pumps present? 0 ❑ ❑ ❑ Page# 5 Permit: NCO024937 Inspection Date: 09/01/2020 Equalization Basins Owner -Facility: Charlotte -Sugar Creek WWTP Inspection Type: Bioassay Compliance Yes No NA NE Are all pumps operable? 0 ❑ ❑ ❑ Are float controls operable? 0 ❑ ❑ ❑ Are audible and visual alarms operable? ❑ ❑ 0 ❑ # Is basin size/volume adequate? 0 ❑ ❑ ❑ Comment: The facility is equipped with two 20 MG equalization basins (both operational). 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 ❑ ❑ ❑ OT,1,IT-Tin Flow Measurement - Influent 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 influent flow meter is calibrated twice per year and was last calibrated on 7/7/2020 by ExDert Services International. LLC. Primary 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 sludge blanket level acceptable? 0 ❑ ❑ ❑ Page# 6 Permit: NCO024937 Inspection Date: 09/01/2020 Owner -Facility: Charlotte -Sugar Creek WWTP Inspection Type: Bioassay Compliance Primary Clarifier Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth) Comment: All four primaries were operational; however, only three were in service. Yes No NA NE ■ ❑ ❑ ❑ Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Diffused Is the basin free of dead spots? 0 ❑ ❑ ❑ 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: Five of six aeration basins were in service. One of the aeration basins was not in service due to repairs to the oxic recycle piping system. Anoxic zones (equipped with mixers) and oxic recycle piping systems were installed in all aeration basins as part of the Reliability Improvements Project. Significant reductions in both chemical usage (magnesium hydroxide) and nutrient levels have resulted from these additions. Foam coverage was greater than 25% in the aeration basins; however, no foam carryover was observed in the secondaries. Chemical Feed Is containment adequate? Is storage adequate? Are backup pumps available? Is the site free of excessive leaking? Comment: Secondary Clarifier Is the clarifier free of black and odorous wastewater? 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 7 Permit: NC0024937 Inspection Date: 09/01/2020 Secondary Clarifier Is the site free of excessive floating sludge? Is the drive unit operational? Owner -Facility: Charlotte -Sugar Creek WWTP Inspection Type: Bioassay Compliance Is the return rate acceptable (low turbulence)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth) Comment: All four secondaries were operational and in service. Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ 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? 0 ❑ ❑ ❑ Comment: Primary and waste activated sludges are pumped to the McAlpine Creek WWTP for continued treatment and processing. Filtration (High Rate Tertiary) Yes No NA NE Type of operation: Down flow Is the filter media present? 0 ❑ ❑ ❑ Is the filter surface free of clogging? 0 ❑ ❑ ❑ Is the filter free of growth? 0 ❑ ❑ ❑ Is the air scour operational? ❑ ❑ ❑ Is the scouring acceptable? ❑ ❑ ❑ Is the clear well free of excessive solids and filter media? 0 ❑ ❑ ❑ Comment: All ten tertiary filters were operational and in service. Disinfection - UV Yes No NA NE Are extra UV bulbs available on site? 0 ❑ ❑ ❑ Are UV bulbs clean? 0 ❑ ❑ ❑ Is UV intensity adequate? 0 ❑ ❑ ❑ Is transmittance at or above designed level? 0 ❑ ❑ ❑ Is there a backup system on site? 0 ❑ ❑ ❑ Is effluent clear and free of solids? 0 ❑ ❑ ❑ Comment: Page# 8 Permit: NCO024937 Owner -Facility: Inspection Date: 09/01/2020 Inspection Type: Charlotte -Sugar Creek WWTP Bioassay Compliance 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 effluent flow meter is calibrated twice per year and was last calibrated on 7/8/2020 by 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? ❑ ❑ 0 ❑ Comment: The effluent appeared clear with no floatable solids and foam (entrained air) following cascade post aeration. DWR and Charlotte Water staff split effluent chronic toxicity samples on 9/1/2020 and 9/3/2020. The facility passed the effluent chronic toxicity test performed by the DWR/Aauatic Toxicitv Unit's Laboratorv. The testina results are included with this report. Standby Power Yes No NA NE Is automatically activated standby power available? 0 ❑ ❑ ❑ Is the generator tested by interrupting primary power source? M ❑ ❑ ❑ Is the generator tested under load? 0 ❑ ❑ ❑ Was generator tested & operational during the inspection? ❑ ❑ ❑ 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 facility is equipped with three backup generators. The on -site staff activate the backup generator(s) prior to storm events. The generators are serviced quarterly by a contracted company (Carolina Cat). Page# 9