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Home My WebLink AboutNC0036269_Site Visit_20170321Water Resources Environmental Quality March 21, 2017 Mr. T. Mark Fowler, Director Water and Sewer Authority of Cabarrus County Post. Office Box 428 Concord, NC 28026-0428 SUBJECT: Compliance Evaluation Inspection . Rocky River WWTP NPDES Permit NCO036269 Cabarrus County, NC Dear Mr. Fowler: ROY COOPER Governor MICHAEL S. REGAN Secretary S. JAY ZIMMERMAN Director RECEIVEDINCDEQIDWR MAR 2 8 2017 WaterQuality pemiltting Section On March 15, 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) 235-2204 or roberto.scheller@n.cdenr.gov. Sincerely, W -I -Q C-,-e_W. Corey Basinger, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ Enclosed cc: John Ritchie, ORC, email: jritchie@wsacc.org •Wastewater Branch File State of North Carolina I Environmental Quality 1611 Mail Service Center I Raleigh, North Carolina 27699-1611 919-707-9000 r United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 EPA OMB No. 2040-0057 Water Compliance Inspection Reporf-""'" --"-- " ApProvaiezpines8--3f-08 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 IN 1 2 15 1 3 I NCO036269 I11 12 17/03/15 17 18 i CJ 191 S 1 20 L 21111 1 I I I I I III 111 I I I I I I I I I I I I I I I I I I I I 11 I I I I Lf Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved -- 67 70 Id I 71 80 LJ lJI 72 NJ 73 I -751 I I I I 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 permit Number) 10:33AM 17/03/15 ' 13/12/01 Rocky River WWrP Exit Time/Date permit Expiration Date PO Box 428 01:23PM 17/03/15 18/10/31 " Concord NC 280260428 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data /// John Walter Ritchie/ORC/704-788-4164/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Travis M Fowler,6400 Breezy Ln Concord NC 28025/Facilities Director/704-788-4164/ 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 J�Ro o Sch ler MRO WQ//252-946-6481/ Signature of Management A vi r Agency/Office/Phone and Fax Numbers Date W. Corey Basinger • MRO WQ//704-235-2194/ L � EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type 31 NCO036269 I11 12I 17/03/15 117 18 Ici Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# Permit: NCO036269 Owner -Facility: RockyRiverWWTP Inspection Date: 03/16/2017 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 ❑ ❑ M ❑ application? 0 ❑ ❑ ❑ Is the facility as described in the permit? M •❑ .❑ ❑ # Are there any special conditions for the permit? M ❑ ❑ ❑ Is access to the plant site restricted to the general public? M ❑ ❑ El Is the inspector granted access to all areas for inspection? 0 ❑ ❑ ❑ Comment: Current permit issued on December 1, 2013 and expires on October 31, 2018. Facility description has left out*the use of dechlorination and should be added next permit reissue. 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? M ❑ ❑ ❑ 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 2417 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? 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? 0 ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? ❑ ❑ ❑ Comment: Records and reports were well organized and maintained. DMR's were reviewed from October 2015 through November 2016 with no reported violations noted during the review period. Laboratory Yes No NA NE Page# 3 Permit: NCO036269 Owner - Facility: Rocky River WWTP Inspection Date: 03/15/2017 Inspection Type: Compliance Evaluation #177. Pollutant scan and toxicity farmed out to contaract laboratories. Instruments used for field analyses Laboratory Yes No NA NE Are field parameters performed by certified personnel or laboratory? ❑ ❑ ❑ 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)? ❑ Is the tubing clean? M ❑ Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees? Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? ❑ ❑ ❑ M ❑ ❑ ❑ M Comment: Influent and effluent analyses performed by WSACC's certified laboratory #177. Pollutant scan and toxicity farmed out to contaract laboratories. Instruments used for field analyses appeared to be properly calibrated and documented. Influent Sampling Yes No NA NE # Is composite sampling flow proportional? M ❑ ❑ ❑ Is sample collected above side streams? 0 ❑ ❑ ❑ Is proper volume collected? 0 ❑ ❑ ❑ Is the tubing clean? M ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees ❑ ❑ ❑ Celsius)? Is sampling performed according to the permit? M ❑ ❑ ❑ Comment: At time of inspection influent sampler temperature was noted at 1 degrees Celsius. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? M ❑ ❑ ❑ Is sample collected below all treatment units? 0 ❑ ❑ ❑ Is proper volume collected? 0 ❑ ❑ ❑ 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: At time of inspection effluent sampler temperature was noted at 2 degrees Celsius. Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? M ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable M ❑ ❑ ❑_ Solids, pH, DO, Sludge Judge, and other that are applicable? Page# 4 Permit: NCO036269 Owner -Facility: Rocky RiverVWVfP Inspection Date: 03/15/2017 Inspection Type: Compliance Evaluation Operations & Maintenance Yes No NA NE Comment: A 30 minute settleable test was conducted on Step I and Step II aeration tanks. Step I settled to 340 ml/I and Step II settled to 300 ml/I. MLSS appeared to settle out well with a clear liquid above sludge blanket. Facility is equiped with SCADA system to monitor treatment process. Bar Screens 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? Yes No NA NE Comment: Facility has a total of six (6) mechanical bar screens with 4 located at the main lift station and 2 located at the headworks. Pump Station - Influent Is the pump wet well free of bypass lines or structures? Is the wet well free of excessive grease? Are all pumps present? Are all pumps operable? Are float controls operable? Is SCADA telemetry available and operational? Is audible and visual alarm available and operational? Comment: Grit Removal Type of grit removal a.Manual b.Mechanical Is the grit free of excessive organic matter? Is the grit free of excessive odor? # 1 d' I f 't ' 1' 0 Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ E ❑ Yes No NA NE E El El E]■ El 1:1 E]s Isposa o grl In comp lance.. M ❑ ❑ ❑ Comment: Headworks is equipped with dual grit removal systems and classifiers. Screenings and _grit are disposed of at landfill. Page# 5 ■❑❑❑. M ❑ ❑ ❑ M ❑ ❑ ❑ 0 ❑ ❑ ❑ Comment: Facility has a total of six (6) mechanical bar screens with 4 located at the main lift station and 2 located at the headworks. Pump Station - Influent Is the pump wet well free of bypass lines or structures? Is the wet well free of excessive grease? Are all pumps present? Are all pumps operable? Are float controls operable? Is SCADA telemetry available and operational? Is audible and visual alarm available and operational? Comment: Grit Removal Type of grit removal a.Manual b.Mechanical Is the grit free of excessive organic matter? Is the grit free of excessive odor? # 1 d' I f 't ' 1' 0 Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ E ❑ Yes No NA NE E El El E]■ El 1:1 E]s Isposa o grl In comp lance.. M ❑ ❑ ❑ Comment: Headworks is equipped with dual grit removal systems and classifiers. Screenings and _grit are disposed of at landfill. Page# 5 Permit NCO036269 Owner - Facility: Rocky River WWTP Inspection Date: 03/15/2017 Inspection Type: Compliance Evaluation Generated on-site M ❑ ❑ Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? ❑ ❑ ❑ ❑ Is flow meter calibrated annually? ❑ ❑ ❑ ❑ Is the flow meter operational? M ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? M ❑ ❑ ❑ Comment: Influent flow meter calibrated monthly by WSACC instrumentation group. Primary 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? Is the site free of excessive floating sludge? Is the drive unit operational? Is the sludge blanket level acceptable? Is the sludge blanket level acceptable? (Approximately % of the sidewall depth) Comment: Pure Oxygen Type of pure oxygen system Is there a back-up source for the system? Are mixers operational? Are samples port/points easily accessible? Yes NoNANE ■ ❑ ❑ ❑ M ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ M ❑ 1:11:1 ■ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ Yes No NA NE Generated on-site M ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: It was noted that one of the Step I areation tanks was down for maintenance at time of inspection. Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? M ❑ ❑ ❑ Is the site free of excessive buildup of solids in center well of circular clarifier? ❑ ❑ ❑ Are weirs level? M ❑ ❑ ❑ Is the site free of weir blockage? M ❑ ❑ ❑ Is the site free of evidence of short-circuiting? E ❑ ❑ ❑ Is scum removal adequate? M ❑ ❑ ❑ Page# 6 Permit: NC0036269 Owner - Facility: Rocky River WWTP Inspection Date: 03/15/2017 Inspection Type: Compliance Evaluation Secondary Clarifier .. Yes No NA NE Is the site free of excessive floating sludge? M ❑ 1111 Is the drive unit operational? M ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? M ❑ ❑ ❑ Is the overflow clear of excessive solids/pin floc? E ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately Y4 of the sidewall depth) ❑ ❑ ❑ 0 Comment: At time of inspection effluent from secondary clarifiers was clear with few suspended solids. Pumps -RAS -WAS Are pumps in place? Are pumps operational? Are there adequate spare parts and supplies on site? Comment: Facility is equipped with five (5) RAS screw pumps. 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: Flow meter calibrated monthly. Disinfection -Liquid Is there adequate reserve supply of disinfectant? (Sodium Hypochlorite) Is pump feed system operational? Is bulk storage tank containment area adequate? (free of leaks/open drains) Is the level of chlorine residual acceptable? Is the contact chamber free of growth, or sludge buildup? Is there chlorine residual prior to de -chlorination? Yes No NA NE M ❑ ❑ ❑ M ❑ ❑ ❑ ❑'❑ ❑ ■ M ❑ ❑ ❑ ■ ❑ ❑ ❑ M ❑ ❑ ❑ ❑ ❑ M .❑ Yes No NA NE • ❑ ❑ ❑ • El ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: SCADA system is used to monitor chlorination/dechlorination levels. Aqueous sodium bisulfite is used for dechlorination. De -chlorination Yes No NA NE Type of system ? Liquid Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ M ❑ Page# 7 Permit: NC0036269 Owner - Facility: Rocky River WVVTP Inspection Date: 03/15/2017 Inspection Type: Compliance Evaluation De -chlorination Yes No NA NE Is storage appropriate for cylinders? ❑ ❑ M ❑ # Is de -chlorination substance stored away from chlorine containers? ❑ ❑ M ❑ Comment: Are the tablets the proper size and type? ❑ ❑ M ❑ Are tablet de -chlorinators operational? ❑ ❑ 0 ❑ Number of tubes in use? Comment: Aqueous Sodium Bisulfite is uesd for dechlorination. 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? ❑ ❑ M ❑ Comment:- At time of inspection effluent was clear with no visible suspended solids. Receiving stream did not appear to be negatively impacted. Chemical Feed Is containment adequate? Is storage adequate? Are backup pumps available? Is the site free of excessive leaking? Comment: 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: Generator is tested weekly and serviced quarterly by contracted company. Solids Handling Equipment Yes No NA NE ■ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ M ❑ ❑ ❑ ■ ❑ ❑ ❑ M ❑ ❑ ❑ M ❑ ❑ ❑ Yes No NA NE Page# 8 Permit: NC0036269 Owner -Facility: RockyRiverWWTP Inspection Date: 03/15/2017 Inspection Type: Compliance Evaluation Solids Handling Equipment Yes No NA NE Is the equipment operational? 0 ❑ ❑ ❑ Is the chemical feed equipment operational? N ❑ ❑ ❑ Is storage adequate? 0 ❑ ❑ ❑ Is the site free of high level of solids in filtrate from filter presses or vacuum filters? ❑ ❑ 0 ❑ Is the site free of sludge buildup on belts and/or rollers of filter press? ❑ ❑ M ❑ Is the site free of excessive moisture in belt filter press sludge cake? ❑ ❑ 0 ❑ The facility has an approved sludge management plan? 0 ❑ ❑ ❑ Comment: Facility has two (2) gravity thickners, sludge receiving station, two (2) centrifuges, and an incenerator. Facility also has two ash basins for ash storage. Page# 9