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Home My WebLink AboutNC0021474_Compliance Evaluation Inspection_20200729ROY COOPER Governor MICHAEL S. REGAN Secretary S. DANIEL SMITH NORTH CAROLINA Director Environmental Quality July 29, 2020 City of Mebane Attn: Chris Rollins, Assistant City Manager 106 E. Washington Street Mebane, NC 27302 SUBJECT: Compliance Evaluation Inspection Mebane WWTP, NCO021474 Alamance County Dear Mr. Rollins: Ron Boone, of the NC Division of Water Resources (DWR), Winston-Salem Regional Office (WSRO), visited the Mebane WWTP on July 16th, 2020, to perform a Compliance Evaluation Inspection (CEI). The assistance and cooperation of Dennis Hodge and Amy Varinoski, was greatly appreciated. Details of the inspection are recorded on the attached EPA Water Compliance Inspection Report. You're reminded that, in accordance with NC General Statute 143-215.6A, failure to comply with all conditions of the permit subjects the City to civil penalties not to exceed $25,000.00 per violation, per day. If you have any questions or require further assistance, please contact Mr. Boone by phone at 336-776-9690, or by email at ron.boone@ncdenr.gov. You may also contact me by phone at 336-776- 9700, or by email at lon.snider@ncdenr.gov. Sin6��l;g�'dd by: 0 3 E3F B7456 Lon . m er, Regional Supervisor Water Quality Regional Operations Section Winston-Salem Regional Office Division of Water Resources, NCDEQ Attachments: EPA Water Compliance Inspection Report cc: LaserFiche D � North Carolina Department of Environmental Quality I Division of Water Resources Winston-Salem Regional Office [ 450 West Hanes Mill Road, Suite 300 I Winston-Salem, North Carolina 27105 NOh r H CAROI.IN/+ oep I, 6,1 m �ku�I o�a� /"� 336.776.9800 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 NC0021474 I11 121 20/07/16 I17 18I � I 19 I s I 201 I 211IIIII 111111III II III III1 I I IIIII IIIIIIIII II r6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved ------------------- 67 I 72 I ni I 71 I 74 79 I I I I I I I80 701 I 71 I LL -1 I I LJ 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:OOAM 20/07/16 14/07/01 Mebane WWTP 635 Corregidor Rd Exit Time/Date Permit Expiration Date Mebane NC 27302 12:OOPM 20/07/16 19/05/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Dennis James Hodge/ORC/336-906-5583/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Linda R Holt,106 E Washington St Mebane NC 27302H919-563-6141/ 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 Ron Boone DWR/WSRO WQ/336-776-9690/ DocuSigned by: o*%,Z& 2�oonel 7/29/2020 Signature of Management Q A Review by: Agency/Office/Phone and Fax Numbers Date /DocuSigned 1,Cly�n.Clk- EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type NCO021474 I11 12I 20/07/16 117 18 i c i Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) The plant was running very well and was very well maintained during the inspection. No discrepancies, deficiencies, or violations were noted. Page# Permit: NCO021474 Owner -Facility: Mebane WWTP Inspection Date: 07/16/2020 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 permit expired over a year ago. The permit renewal application was received on time. 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 ❑ M ❑ ❑ 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? M ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? M ❑ ❑ ❑ Comment: None 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? M ❑ ❑ ❑ Page# 3 Permit: NCO021474 Owner -Facility: Mebane WWTP Inspection Date: 07/16/2020 Inspection Type: Compliance Evaluation Laboratory Yes No NA NE # 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? ❑ ❑ ❑ Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? ❑ ❑ ❑ Comment: None 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: None 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 ❑ ❑ ❑ # 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: None Upstream / Downstream Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type, an( 0 ❑ ❑ ❑ sampling location)? Comment: None Bar Screens Yes No NA NE Type of bar screen Page# 4 Permit: NCO021474 Owner -Facility: Mebane WWTP Inspection Date: 07/16/2020 Inspection Type: Compliance Evaluation Bar Screens Yes No NA NE 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: None 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: Removal from grit chamber is achieved with a vacuum truck. 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? 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/I) 0 ❑ ❑ ❑ Comment: None 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 ❑ ❑ ❑ Page# 5 Permit: NC0021474 Owner -Facility: Mebane WWTP Inspection Date: 07/16/2020 Inspection Type: Compliance Evaluation Secondary Clarifier Yes No NA NE 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: None 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: None Filtration (High Rate Tertiary) Yes No NA NE Type of operation: Is the filter media present? ❑ ❑ ❑ Is the filter surface free of clogging? ❑ ❑ ❑ Is the filter free of growth? ❑ ❑ ❑ Is the air scour operational? ❑ ❑ ❑ Is the scouring acceptable? ❑ ❑ ❑ Is the clear well free of excessive solids and filter media? ❑ ❑ ❑ Comment: Filters are now cloth media filters. Disinfection -Liquid Yes No NA NE Is there adequate reserve supply of disinfectant? 0 ❑ ❑ ❑ (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? ❑ ❑ ❑ Is the contact chamber free of growth, or sludge buildup? 0 ❑ ❑ ❑ Is there chlorine residual prior to de -chlorination? ❑ ❑ ❑ Page# 6 Permit: NC0021474 Inspection Date: 07/16/2020 Disinfection -Liquid Comment: None De -chlorination Type of system ? Is the feed ratio proportional to chlorine amount (1 to 1)? Owner -Facility: Mebane WWTP Inspection Type: Compliance Evaluation Is storage appropriate for cylinders? # Is de -chlorination substance stored away from chlorine containers? Are the tablets the proper size and type? Yes No NA NE Yes No NA NE Liquid ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ Comment: Sodium Hypochlorite and Sodium Bisulfate are both in the same building with separate containment systems. Are tablet de -chlorinators operational? ❑ ❑ 0 ❑ Number of tubes in use? Comment: None Flow Measurement - Influent # 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? Comment: None The facility employs a SCADA system which records all data. Meters are calibrated quarterly. 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? Comment: None The facility employs a SCADA system which records all data. Meters are calibrated quarterly. 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? Yes No NA NE ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Page# 7 Permit: NCO021474 Inspection Date: 07/16/2020 Owner -Facility: Mebane WWTP Inspection Type: Compliance Evaluation Effluent Pipe If effluent (diffuser pipes are required) are they operating properly? Comment: None 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: None 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? Comment: None 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: None Yes No NA NE ■ ❑ ❑ ❑ Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ IY-Tvki[•7►/_90I:4 ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ Page# 8