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Home My WebLink AboutNC0085812_Compliance Evaluation Inspection_20170310Y Water Resources - Environmental Quality March 10, 2017 Mr. Edward Goscicki, PE . Union County Department of Public Works 500 North Main .Street,. Suite 600 Monroe, NC 28112 SUBJECT: Compliance Evaluation Inspection Grassy Branch WWTP NPDES Permit NCO085812 Union County, NC Dear Mr. Goscicki: ROY COOPER Governor MICHAEL S. REGAN S. JAY ZIMMERMAN . Director 7 N 7 water Quality permitting Spction On March 8, 2017, 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. At the time of inspection facility appeared to be well maintained and operated. We.wish to thank you and 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=2.204 or roberto.scheller@ncdenr.gov. Sincerely, W. Corey Basinger, Regional Supervisor Water Quality Regional'Operations Section Division of Water Resources., NCDEQ Enclosed cc: Wastewater Branch File State of North Carolina I Environmental Quality 1611 Mail Service Center I Raleigh, North Carolina27699-1611 919-707-9000 United States Environmental Protection Agency Form Approved. D Q Washington, D.C. 20460 EPA t ^ OMB No. 2040-0057 Water C07 pliarlce IrlSpectlOn Report —` ' "" `^ -Approval expires a-31-98 ---- -- Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 2 Is 1 3 I NCO08581z I11 12 17/03/08 17 18I I 19 I ! I 201 211 I I I I I I I I I I I l l l l l l l l l l l l 1 I I I I I I I I I I 11 I 1 I I I i66 I Inspection Work Days Facility Self -Monitoring Evaluation Rating B1' QA -- Reserved- 67 70 1, 1 71 � 72 1 �, 1 73I 1 I74 75 80 L_I LJ l_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 permit Number) 09:50AM 17/03/08 13/12/01 Grassy Branch WWTP Exit Time/Date Permit Expiration Date Old Fish Rd 11:42AM 17/03/08 18/10/31 Monroe NC 28111 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other.Facility Data Danny L Smith/ORC// Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Edward Goscicki,500 N Main St -Ste 500 Monroe NC 281124730/Public Works No Directorf704-296-4212/7042964232 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 Inspectors) Agency/Office/Phone and Fax Numbers Date Roberto Scheller MRO WQ//252-946-6481/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date W. Corey Basinger MRO WQ//704-235-2194/ EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 2,.2®/-21, NPDES yr/mo/day Inspection Type 1 31 NCO085812 il1 12I 17/03/08 117 18ICI Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# e Permit: NCO085812 Owner -Facility: Grassy Branch WWTP Inspection Date: 03/08/2017 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? ❑ M ❑ ❑ # Are there any special conditions for the permit? ❑ 0 ❑ ❑ Is access to the plant site restricted to the general public? M ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? M ❑ ❑ ❑ Comment: Facility has added lime chemical feed to treatment works that should be indicated on permit in next permit cycle. The current permit expires October 31, 2018. 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 CDCs 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ M ❑ ❑ ❑ M ❑ ❑ ❑ Comment: Records were well kept and avalible for review. It was noted that DMRs, Labatory Analysis, and COC's are being kept at Crooked Creek UW1(fP. M ❑ ❑ ❑ M ❑ ❑ ❑ ❑ ❑ ■ ❑ Is the ORC visitation log available and current? 0 ❑ ❑ ❑ Is the ORC certified at grade equal to or higher than the facility classification? M ❑ ❑ ❑ Is the backup operator certified at one grade less or greater than the facility classification? 0 ❑ ❑ ❑ 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: Records were well kept and avalible for review. It was noted that DMRs, Labatory Analysis, and COC's are being kept at Crooked Creek UW1(fP. Operations & Maintenance Is the plant generally clean with acceptable housekeeping? Yes No NA NE M ❑ ❑ ❑ Page# 3 ' Permit: NC0085812 Owner - Facility. Grassy Branch WWTP Inspection Date: 03/08/2017 Inspection Type: Compliance Evaluation Operations & Maintenance Yes No NA NE Does the facility analyze process control, parameters, for ex: MLSS, MCRT, Settleable -Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: 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 • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ . M ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ 0 ❑ Comment: At time of inspection the influent sampler temperature was noted at 2 degrees Celsius. Effluent sampler temperature recorded at 5 degrees Celsius. It was noted that effluent sample had just previously been removed. Bar Screens Yes No NA NE 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: Influent Sampling # Is composite sampling flow proportional? Is sample collected above side streams? 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 sampling performed according tothe permit? Comment: M El • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes. No NA NE ■ ❑ ❑ ❑ M ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ M ❑ ❑ ❑ Page# 4 Permit: NCO085812 Owner -Facility: Grassy Branch WWTP Is the basin aerated? E ❑ Inspection Date: 03/08/2017 Inspection Type: Compliance Evaluation Is the basin free of bypass lines or structures to the natural environment? N ❑ Influent Sampling Yes No NA NE Chemical Feed Yes No NA NE Is containment adequate? N ❑ ❑ ❑ Is storage adequate? 0 ❑ ❑ ❑ Are backup pumps available? N ❑ ❑ ❑ Is the site free of excessive leaking? N ❑ ❑ ❑ Comment: Equalization Basins Yes No NA NE Is the basin aerated? E ❑ ❑ ❑ Is the basin free of bypass lines or structures to the natural environment? N ❑ ❑ ❑ Is the basin free of excessive grease? N ❑ ❑ ❑ Are all pumps present? 0 ❑ ❑ ❑ Are all pumps operable? N ❑ ❑ ❑ Are float controls operable? E ❑ ❑ ❑ Are audible and visual alarms operable? ❑ ❑ ❑ ❑ # Is basin size/volume adequate? 0 ❑ ❑ ❑ Comment: 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? ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? E ❑ ❑ ❑ Is the DO level acceptable? N ❑ ❑ ❑ Is the DO level acceptable?(1.0 to 3.0 mg/1) N ❑ ❑ ❑ Comment: ORC reported that DO levels in aeration basin were too high when 2 blower were ran and too low when one blower was ran. it is planned to adjust blower run speed to help blance DO levels in aeration basin. Pumps -RAS -WAS Yes No,NA NE Page# 5 Permit NC0085812 Owner -Facility: Grassy BranchWWfP Is the clarifier free of black and odorous wastewater? E ❑ Inspection Date: 03/08/2017 Inspection Type: Compliance Evaluation Is the site free of excessive buildup of solids in center well of circular clarifier? E ❑ Pumps -RAS -WAS Yes No NA NE Are pumps in place? 0 ❑ ❑ ❑ Are pumps operational? 0 ❑ ❑ El Are there adequate spare parts and supplies on site? ❑ ❑ ❑ M Comment: RAS and WAS pumps are air lift pumps. Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? E ❑ ❑ ❑ Is the site free of excessive buildup of solids in center well of circular clarifier? E ❑ ❑ ❑ 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? ❑ ❑ ❑ ❑ Is the site free of excessive floating sludge? 0 ❑. ❑ ❑ Is the drive unit operational? M ❑ ❑ ❑ 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 '/< of the sidewall depth) 0 ❑ ❑ ❑ Comment: At time of inspection effluent from secondary clarifiers was clear with few suspended solids. Filtration (High Rate Tertiary) Yes No NA NE Type of operation: Down flow Is the filter media present? ❑ ❑ ❑ .Is the filter surface free of clogging? M ❑ ❑ ❑ Is the filter free of growth? E ❑ ❑ ❑ Is the air scour operational? ❑ ❑ ❑ N Is the scouring acceptable? ❑ ❑ ❑ M Is the clear well free of excessive solids and filter media? 0 ❑ ❑ ❑ Comment: At time of inspection the filter appeared to be well operated and maintained. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? M ❑ ❑ ❑ Is sample collected below all treatment units? M ❑ ❑ ❑ Is proper volume collected? 0 ❑ ❑ ❑ Page# 6 Q Permit: NCO085812 Owner- Facility: Grassy Branch WWTP Inspection Date: 03/08/2017 Inspection Type: Compliance Evaluation Effluent Sampling Yes No NA NE Is the tubing clean? M ❑ ❑ ❑ # Is proper temperature set for sample storage"(kept at less than or equal to 6.0 degrees M ❑ ❑ ❑ Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type 0 ❑ ❑ ❑ representative)? Comment: Both influent and effluent samplers appeared to be clean and well maintained. Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? 0 ❑ ❑ ❑ Is flow meter calibrated annually? ❑ ❑ ❑ Is the flow meter operational? M ❑ ❑ ❑ (If units are'separated) Does the chart recorder match the flow meter? ❑ ❑ ❑ Comment: Flow meter calibrated by CITI LLC of Charlotte NC. The flow meter was last calibrated on 1/23/2017. Disinfection - UV Yes No NA NE Are extra UV bulbs available on site? ❑ ❑ ❑ 0 Are UV bulbs clean? M ❑ ❑ ❑ Is UV intensity adequate? ❑ ❑ ❑ 0, Is transmittance at or above designed level? ❑ ❑ ❑ '0 Is there a backup system on site? ❑ 0 ❑ElIs effluent clear and free of solids? ❑ E] 0 Comment: Uv disinfection consist of 3 banks of UV lamps with 2 bulbs per bank Bulbs are changed annually. Standby Power Yes No NA NE Is automatically activated standby power available? 0 ❑ ❑ ❑ Is the generator tested by interrupting primary power source? ❑ ❑ ❑ N Is the generator tested under load? ❑ ❑ ❑ 0 Was generator tested & operational during the inspection? ❑ ❑ ❑ M 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 ❑ ❑J ❑ Comment: Page# 7 C Permit: NCO085812 Owner -Facility: Grassy Branch WWTP Inspection Date: 03/08/2017 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: At time of inspection effluent at point of discharge was clear with no visible suspended solids and only trace amount of foam. Effluent discharges into Crooked Creek which is listed on North Carolina 303(d) list of impaired waters. Page# 8