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Home My WebLink AboutNC0036269_Inspection_20180809I Va rer Resources ENVIRONMENTAL GUAJITY August 9, 2018 Mr. T. Mark Fowler, Director Water and Sewer Authority of Cabarrus County 232 Davidson Highway Concord, NC 28027 SUBJECT: Compliance Sampling Inspection Rocky River WWTP NPDES Permit NCO036269 Cabarrus County, NC Dear Mr. Fowler: ROY COOPER 07047 M11 MICE-L-5LEL S- REOAN Sec�ef�- LLNDA CULPEPPER beerim.Direefor On August 7, 2018, Roberto Scheller of this Office conducted a compliance inspection at the subject facility. This inspection was conducted as a Compliance Sampling Inspection (CSI) to insure compliance with permit requirements and conditions. Samples were collected for Chronic Toxicity on August 7th and 9th, 2018. Results of the chronic toxicity tests will be forwarded under a separate cover. 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@ncdenr.gov. Sincerely, DocuSigned by: A�ww H P;z� for F161 FB69A2D84A3... W. Corey Basinger, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ Enclosed cc: John Ritchie, ORC, email: jritchie@wsacc.org State of North Carolina I Environmental Quality I Water Resources 610 East Center Avenue, Suite 301, Mooresville, NC 28115 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 1 2 15 I 3 I NCO036269 111 12 I 18/08/07 I17 18 Li] 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 70Iq I 71 72n, 73I i74 751 I I I 1 80 u ItI 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) 08:58AM 18/08/07 13/12/01 Rocky River WWTP 232 Davidson Hwy Exit Time/Date Permit Expiration Date Concord NC 28027 11:55AM 18/08/07 18/10/31 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,232 Davidson Hwy Concord NC 280270428//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 DocuSigned by: Roberto SchellerES�L MRO WQ//252-946-6481/ 8/9/2018 91 C2A007838943E... Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers DocuSigned by: Date *-. w H pal-ft 8/8/18 Andrew Pitner MRO WQ//704-663-1699 Ext.21 E F161 1`1369AMUA3... EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type N C 0036269 111 121 18/08/07 1 17 18 ISI Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# Permit: NCO036269 Owner -Facility: Rocky River WWTP Yes No NA NE Are records kept and maintained as required by the permit? 0 ❑ Inspection Date: 08/07/2018 Inspection Type: Compliance Sampling ❑ Is all required information readily available, complete and current? 0 ❑ ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? 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 is for the continued operation of the subject wastewater treatment facility with provision for flow increase. Permit was issued on December 1, 2013 and expires on Transported COCs October 31. 2018. Are DMRs complete: do they include all permit parameters? ❑ 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 labatory analysis reports are stored on S Drive. Review period was from 07/2017 through Name of individual performing the sampling 06/2018. No permit limit violations were reported during subject review period. 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 operator ❑ ❑ ❑ 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? ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? 0 ❑ ❑ ❑ Comment: Records and reports were well organized and readily available for review. E -DMR and labatory analysis reports are stored on S Drive. Review period was from 07/2017 through 06/2018. No permit limit violations were reported during subject review period. Page# 3 Permit: NCO036269 Owner -Facility: Rocky River WWTP Inspection Date: 08/07/2018 Inspection Type: Compliance Sampling Yes No NA NE # Is composite sampling flow proportional? 0 ❑ 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)? 0 ❑ ❑ ❑ 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: At time of inspection samDle refreaerator was recorded at 2 dearees Celsius. Influent and effluent analyses performed by on -site laboratory Certification #177. Metals, toxicity and pollutant scan performed by contract labs Enviro 1 Cert # 0010, Meritech Cert # 165, R&A Cert # 0034. 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: At time of subject inspection facility appeared to be very well maintained and operated. 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)? 0 ❑ ❑ ❑ Is sampling performed according to the permit? 0 ❑ ❑ ❑ Comment: At timeof inspection influent sampler temperature was recorded at 2 degrees Celsius. Bar Screens Yes No NA NE Type of bar screen a.Manual ❑ b.Mechanical 0 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 ❑ ❑ ❑ Page# 4 Permit: NCO036269 Inspection Date: 08/07/2018 Bar Screens Owner -Facility: Rocky River WWTP Inspection Type: Compliance Sampling Comment: Two mechanical bar screens are located at headworks of facility. 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? # Is disposal of grit in compliance? Yes No NA NE Yes No NA NE EJ 0 ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Comment: Headworks equipped with dual grit removal systems and classifiers. Screenings and grit is disposed of at landfill. 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 ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately '/, of the sidewall depth) ❑ ❑ ❑ ❑ Comment: Pure Oxygen Yes No NA NE Type of pure oxygen system Generated on-site Is there a back-up source for the system? 0 ❑ ❑ ❑ Are mixers operational? 0 ❑ ❑ ❑ Are samples port/points easily accessible? 0 ❑ ❑ ❑ Comment: Secondary Clarifier Yes No NA NE Page# 5 Permit: NCO036269 Inspection Date: 08/07/2018 Owner -Facility: Rocky River WWTP Inspection Type: Compliance Sampling 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? Is the site free of excessive floating sludge? Is the drive unit operational? Is the return rate acceptable (low turbulence)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately 1/4 of the sidewall depth) Comment: At time of inspection sludge blanket in #8 secondary clarifier measures 6-8 inches. Yes No NA NE ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ Chemical Feed Yes No NA NE Is containment adequate? 0 ❑ ❑ ❑ Is storage adequate? 0 ❑ ❑ ❑ Are backup pumps available? 0 ❑ ❑ ❑ Is the site free of excessive leaking? 0 ❑ ❑ ❑ Comment: 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: Facility is equipped with five (5) RAS screw pumps. 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)? Page# 6 Permit: NC0036269 Owner -Facility: Rocky River WWTP Inspection Date: 08/07/2018 Inspection Type: Compliance Sampling Effluent Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type 0 ❑ ❑ ❑ representative)? Comment: At time of inspection effluent sampler was recorded at 3 degrees Celsius. 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? ❑ ❑ ❑ 0 Is the contact chamber free of growth, or sludge buildup? 0 ❑ ❑ ❑ Is there chlorine residual prior to de -chlorination? 0 ❑ ❑ ❑ Comment: De -chlorination Yes No NA NE Type of system ? Liquid ❑ ❑ Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ ❑ ❑ Is storage appropriate for cylinders? ❑ ❑ 0 ❑ # Is de -chlorination substance stored away from chlorine containers? ❑ ❑ 0 ❑ Comment: Are the tablets the proper size and type? ❑ ❑ ❑ ❑ Are tablet de -chlorinators operational? ❑ ❑ ❑ ❑ Number of tubes in use? Comment: Sodium Bisulfite is used for dechlorination. Standby Power Yes No NA NE Is automatically activated standby power available? 0 ❑ ❑ ❑ Is the generator tested by interrupting primary power source? 0 ❑ ❑ ❑ Is the generator tested under load? 0 ❑ ❑ ❑ Was generator tested & operational during the inspection? ❑ ❑ ❑ 0 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: Generator is tested weekly. Page# 7 Permit: NC0036269 Inspection Date: 08/07/2018 Owner -Facility: Rocky River WWTP Inspection Type: Compliance Sampling 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 was clear with no visible suspended solids. Receiving stream ❑ Is the site free of high level of solids in filtrate from filter presses or vacuum filters? (Rocky River in the Yadkin -Pee Dee River Basin,) had high flow with extremely turbid water. ❑ 0 There was no foam or floating solids at point of discharge. Is the site free of sludge buildup on belts and/or rollers of filter press? ❑ ❑ Solids Handling Equipment Yes No NA NE Is the equipment operational? 0 ❑ ❑ ❑ Is the chemical feed equipment operational? 0 ❑ ❑ ❑ 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? ❑ ❑ 0 ❑ Is the site free of excessive moisture in belt filter press sludge cake? ❑ ❑ 0 ❑ The facility has an approved sludge management plan? 0 ❑ ❑ ❑ Comment: Solids handling equipment include (2) gravity thickners, solid and liquid sludge receiving stations, (2) centrifuges (in operation at time of inspection) biosolids go into incenerator for final disposal. Ash is placed in one of two on-site ash basins for storage. Page# 8