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Home My WebLink AboutNC0024333_Compliance Evaluation Inspection_20190130Roy COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Russell Colbath, PE Director of Water Resources City of Monroe Post Office Box 69 Monroe, NC 28111 Dear Mr. Colbath: NORTH CAROLINA Environmental Quality January 30, 2019 SUBJECT: Compliance Evaluation Inspection Monroe WWTP NPDES Permit NCO024333 Union County, NC On January 22, 2019, Roberto Scheller of this Office conducted a compliance inspection at the subject facility. This inspection was conducted as a Compliance Evaluation Inspection (CEI) to insure compliance with permit requirements and conditions. We wish to thank the operating staff for assistance regarding this inspection. The enclosed report should be self-explanatory; however, should you have any questions, please do not hesitate to contact myself or Roberto Scheller at (704) 235-2204 or roberto.scheller(a)ncdenr.gov. Sincerely, DocuSigned by: A14CC681AF27425... W. Corey Basinger, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ Enclosure: CEI Report Laserfiche cc: Kyle Ketchum, ORC, email: kketchum@monroenc.org D Q 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 NORTH CAROLINA � o.namremor �w.c�giuuei� /`� 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 I 2 15 I 3 I NCO024333 111 12 I 19/01/22 I17 18 I S I 19 LG] I 201 I 211111 1 1 1 1 1 111 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 111 1 1 1 1 1 166 Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved------------------- 67 70 I g 71 I tyI 72 I r l 73 � I I 74 751 1 1 1 1 1 1 180 uI 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 oermit Number) 10:30AM 19/01/22 14/09/01 Monroe WWTP 775 Treeway Dr Exit Time/Date Permit Expiration Date Monroe NC 28110 01:06PM 19/01/22 19/01/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Kyle P Ketchum/ORC/704-282-4612/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Russell G Colbath,PO Box 69 Monroe NC 28111/Water Resources Director/704-282-4624/7042825764 No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenance Records/Reports Self-Monitoring Program Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters 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: Roberto SchellerES�L MRO WQ//252-946-6481/ 1/29/2019 91 C2A007838943E... Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date W. Corey Basinger Division of Water Quality//704-2; EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. DocuSigned by: •1/30/2019 AlaccsalAFvazs... Page# NPDES yr/mo/day Inspection Type NCO024333 111 121 19/01/22 1 17 18 JCJ Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# Permit: NCO024333 Owner - Facility: Monroe WWTP Inspection Date: 01/22/2019 Inspection Type: Compliance Evaluation Yes No NA NE Are records kept and maintained as required by the permit? 0 ❑ Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new 0 ❑ ❑ ❑ application? 0 ❑ ❑ ❑ 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: Current permit became effective September 1, 2014 and expires at midnight on Jaunary 31, 2019. 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 analysis are stored on computer that has daily back-up. 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? 0 ❑ ❑ ❑ Has the facility submitted its annual compliance report to users and DWQ? 0 ❑ ❑ ❑ (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator 0 ❑ ❑ ❑ on each shift? 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? ❑ ❑ ❑ Is a copy of the current NPDES permit available on site? ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? 0 ❑ ❑ ❑ Comment: All records reviewed were current and available for inspection. E-DMR's and laboratory analysis are stored on computer that has daily back-up. Operations & Maintenance Is the plant generally clean with acceptable housekeeping? ■ ❑ ❑ ❑ Page# 3 Permit: NCO024333 Owner - Facility: Monroe WWTP Inspection Date: 01/22/2019 Inspection Type: Compliance Evaluation Operations & Maintenance Yes No NA NE Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable 0 ❑ ❑ ❑ Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: Plant appeared to be well kept. Process control records for treatment process were reviewed and are up to date. Pump Station - Effluent Yes No NA NE Is the pump wet well free of bypass lines or structures? ❑ ❑ ❑ ❑ 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: Pumps in influent pump station have been replaced. At time of inspection pumps appeared to be operating properly. Equalization Basins 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? Yes No NA NE ❑ ❑ ■ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ 1:11:1 • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ ■ ■ ❑ ❑ ❑ Comment: Berm of equalization basin was inspected for erosion, burrowing animals and trees. The berm appeared to be well vegetated and mowed. No erosion or burrowing amimals were noted on berm at time of inspection. Saplings noted in previous inspection have been removed. 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 ❑ ❑ ❑ Page# 4 Permit: NCO024333 Inspection Date: 01/22/2019 Bar Screens Is disposal of screening in compliance? Is the unit in good condition? Owner - Facility: Monroe WWTP Inspection Type: Compliance Evaluation Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Comment: Facility has installed two new rotary fine screens. Screening debris is disposed of in landfill. 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 E ❑ ❑ ❑ Celsius)? ❑ ❑ Is the DO level acceptable? ❑ ❑ Is sampling performed according to the permit? 0 ❑ ❑ ❑ Comment: At time of inspection influent sampler was recorded at 3 degrees Celsius. Aeration Basins Yes No NA NE Mode of operation Ext. Air ❑ ❑ Type of aeration system Diffused 0 ❑ 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: 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? 0 ❑ ❑ ❑ Page# 5 Permit: NCO024333 Owner - Facility: Monroe WWTP Are pumps in place? 0 ❑ Inspection Date: 01/22/2019 Inspection Type: Compliance Evaluation Are pumps operational? 0 ❑ Secondary Clarifier Yes No NA NE Is the drive unit operational? 0 ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? 0 ❑ ❑ ❑ Is the overflow clear of excessive solids/pin floc? M ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth) ❑ ❑ ❑ 0 Comment: At time of inspection effluent going over weirs was clear with few visible solids. 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: 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? ❑ ❑ ❑ 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? ❑ ❑ ❑ 0 Comment: Pumps have been replaced in backwash basin that pump to EQ basin. Disinfection -Gas Yes No NA NE Are cylinders secured adequately? 0 ❑ ❑ ❑ Are cylinders protected from direct sunlight? 0 ❑ ❑ ❑ Is there adequate reserve supply of disinfectant? 0 ❑ ❑ ❑ 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 Does the Stationary Source have more than 2500 lbs of Chlorine (CAS No. 7782-50-5)? E ❑ ❑ ❑ If yes, then is there a Risk Management Plan on site? 0 ❑ ❑ ❑ If yes, then what is the EPA twelve digit ID Number? (1 000--) 1000 001 10435 If yes, then when was the RMP last updated? 03/15/2018 Page# 6 Permit: NCO024333 Inspection Date: 01/22/2019 Disinfection -Gas Comment: Owner - Facility: Monroe WWTP Inspection Type: Compliance Evaluation De -chlorination Type of system ? Is the feed ratio proportional to chlorine amount (1 to 1)? 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 Gas ❑ ❑ ❑ ❑ ❑ ❑ ■ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ Comment: Facility uses 1 -ton cylinders of Sulfer-Dioxide for de -chlorination. Facility is planning to upgrade chlorine and de -chlorination systems. Are tablet de -chlorinators operational? ❑ ❑ 0 ❑ Number of tubes in use? Comment: 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 • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Facility is equipped with two effluent composite samplers. At time of inspection effluent sampler #1 was recorded at 1 degree Celsius. Effluent sampler #2 was recorded at 4 degrees Celsius. 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: Effluent flow meter was last calibrated on December 13, 2018. Effluent Pipe I01111111►[•71'!II_m►1M • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE Page# 7 Permit: NCO024333 Inspection Date: 01/22/2019 Owner - Facility: Monroe WWTP 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? 0 ❑ ❑ ❑ If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ 0 ❑ Comment: This facility has cascading step aeration before discharging into Richardson Creek. Small amount of foam was being generated at point of discharge but disipated within 80 feet of discharge point. 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: Facility has 2 sludge thickner tanks and 3 aerobic digesters. 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 • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ 1:11:1 1[TM►rem ►/_m►1=111111 • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ Comment: Belt thickner was not in operation at time of inspection. Large amounts of dewatered sludge was being stock piled due to fields being too wet to land apply. Additional drying beds may be used for sludge storage until land application is possible. It is recommended that a cover structure to protect dewatered sludge from rain be looked into. Drying Beds Is there adequate drying bed space? Is the sludge distribution on drying beds appropriate? Are the drying beds free of vegetation? # Is the site free of dry sludge remaining in beds? Is the site free of stockpiled sludge? Is the filtrate from sludge drying beds returned to the front of the plant? 1[-41111111►[•7►/_m►1M ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ■ ❑ ❑ ❑ Page# 8 Permit: NCO024333 Owner - Facility: Monroe WWTP Inspection Date: 01/22/2019 Inspection Type: Compliance Evaluation Drying Beds Yes No NA NE # Is the sludge disposed of through county landfill? 0 ❑ ❑ ❑ # Is the sludge land applied? 0 ❑ ❑ ❑ (Vacuum filters) Is polymer mixing adequate? 0 ❑ ❑ ❑ Comment: Old drying beds may be used for dewatered sludge storage until land application is possible. It is recommended that the old drying beds be inspected for structural integrity and operational underdrains before being placed in use. 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: New generator is to be placed on site to replace older generators. Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Page# 9