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Home My WebLink AboutNC0026441_Compliance Evaluation Inspection_20171218r. J 3 ,� Water Resources ENVIRONMENTAL QUALITY December 5, 2017 Bryan Thompson, Town Manager Town of Siler City 311 North Second Avenue Siler City, NC 27344 ROY COOPER MICHAEL S REGAN 1r�,rlur r LINDA CULPEPPER hael,m Nue[ I l RECEIVED/DENR/DWR DEC A 8 2017 Water Resources Permitting Section Subject: Compliance Evaluation Inspection Siler City WWTP NPDES Permit No NCO026441 Chatham County Dear Mr. Thompson: On November 14, 2017, Jason Robinson of the Raleigh Regional Office (RRO) conducted a compliance evaluation inspection of the subject facility. The assistance provided by Mr Chris McCorquodale, Operator in Responsible Charge (ORC) was appreciated The inspection report is attached. The following observations were made: 1. The facility is currently permitted to discharge up to 4.0 MGD into Loves Creek, a class -C water in the Cape Fear River Basin Current flows average approximately 1.75 MGD. The current permit expires on May 31, 2019. A request for a permit renewal should be submitted at least 180 days prior to the expiration of the current permit 2 The plant is classified as a WW -4 wastewater facility. Mr Chris McCorquodale is designated as the primary Operator in Responsible Charge (ORC), and is a WW -4. Mr. Richard Lineberry is designated as the backup Operator (bORC), is also a WW -4. Daily operation log books are detailed and are kept on-site going back at least five years. The facility is certified for analyzing BOD, Fecal, TRC, pH Temp Ammonia, DO (Certification #132) Log books were kept and showed that incubators are kept at acceptable temperatures pH buffers were within dates Calibration logs were present. All other parameters are analyzed by Meritech, Inc Lab results, chain -of -custody forms, and DMRS were complete and organized. June DMR data was compared to lab bench sheets; no data transcription errors were noted. Samples were observed to be kept at proper temperature. 4. The permit lists the following units (Comments are provided for some of these units): • Automatic and manual bar screens • Grit Collection Unit • Influent Pump Station — Four Pumps • Filter Backwash Holding Station • DAF Unit Division of Water Resources, Raleigh Regional Office, Water Quality Operations Section www ncwaterquality org 1628 Mad Seance Center, Raleigh, NC 27699-1628 Phone (919) 791-4200 Location 3800 Barrett Drive, Raleigh, NC 27609 Fax (919) 788-7159 • Four Equalization Basins — Only used during high flows/emergencies. None were in �. operation during the time of the inspection • Sludge Transfer Station • Lime Tower • Dual oxidation ditches • Alum feed station — Alum at the splitter box upstream of the clarifiers • Dual Secondary Clarifiers — Sludge blanket tested in one at approximately 1.5 feet. Clarifier is 16 feet deep. • Four Tertiary Filters • Chlorine Contact Chamber • Sulfur Dioxide addition (Dechlorination) • Solids removal area (screened and separated; trucked offsite as byproduct). Synagro hauls sludge from the facility every 2-3 months. Hauling records were reviewed. 5. The right of way to the outfall was properly maintained. The effluent appeared clear and free of solids There were no visible detrimental impacts to the receiving stream. This facility was found to be compliant with NPDES permit conditions as a result of this inspection The plant is well maintained and documentation was found to be detailed, organized, and complete. If you have any questions regarding the attached reports or any of the findings, please contact Jason Robinson at: (919) 791-4200 (or email Jason.t robmson@ncdenr.gov). Si�ce�ely, / Danny S ith Regional Supervisor Raleigh Regional Office ATTACHMENTS Compliance Inspection Report Cc: Central Files w/attachment Raleigh Regional Office Chris McCorquodale• 15 Siler City, NC 27344 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 1 3 I NCO026441 I11 121 17/11/14 I17 18 I r l 19 I S 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------ 180 67 70 L_ 1 I 71 L_j 72 j 73 I I74 751 I I I I I 11 LJti L I I 1 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) 01 30PM 17/11/14 14/06/01 Stier City WWTP 198 Utility Dr Exit Time/Date Permit Expiration Date Siler City NC 27344 03 30PM 17/11/14 19/05/31 Name(s) of Onsite Rep resentative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data /// Christopher Michael McCorquodale/ORC/919-742-4581/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Bryan Thompson,PO Box 769 Siler City NC 27344/Town Manager/919-742-473119196633874 Yes Section C Areas Evaluated During Inspection (Check only those areas evaluated) ■ Permit ® Flow Measurement ® Operations & Maintenance ® Records/Reports Sludge Handling Disposal ® 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 Jason T Ro i son RRO WQ/// L ignatu of Manageme Q A Reviewer Agency/ ffice/Phon`e and Fax umbe Date l,/ ?72 EPA Form 3543 (Rev 9-94) Previous editions are obsolet/ Page# 10 Permit NCO026441 Owner - Facility Siler City VVVVTP Inspection Date 11/14/2017 Inspection Type Compliance Evaluation Yes No NA NE (If the present permit expires in 6 months or less) Has the permittee submitted a new ❑ 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? Is the facility as described in the permit? ❑ ❑ ❑ # 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)? Is the inspector granted access to all areas for inspection? ® ❑ ❑ Incubator (Fecal Coliform) set to 44 5 degrees Celsius+/- 0 2 degrees? ® ❑ ❑ ❑ Incubator (BOD) set to 20 0 degrees Celsius +/- 1 0 degrees? ® ❑ ❑ ❑ Comment Facility analyzes for BOD, Fecal Chlorine TSS. Ammonia pH Temp Other parameters ❑ analyzed by Mentech Operations & Maintenance Yes No NA NE 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 Permit Yes No NA NE (If the present permit expires in 6 months or less) Has the permittee submitted a new ❑ ❑ M ❑ application? ® ❑ ❑ ❑ Is the facility as described in the permit? ® ❑ ❑ ❑ # Are there any special conditions for the permit? ❑ ® ❑ ❑ Is access to the plant site restricted to the general public? ® ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? ® ❑ ❑ ❑ Comment Record Keeping Yes No NA NE 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? a ❑ ❑ ❑ Is the chain -of -custody complete? M ❑ ❑ ❑ Dates, times and location of sampling It Name of individual performing the sampling ❑ Results of analysis and calibration ❑ Dates of analysis ❑ Page# 3 Permit NCO026441 Owner -Facility Siler CityWWTP Is the pump wet well free of bypass lines or structures? ® ❑ Inspection Date 11/14/2017 Inspection Type Compliance Evaluation Is the wet well free of excessive grease? ❑ ❑ Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? ■ ❑ ❑ ❑ Is flow meter calibrated annually? 0 ❑ ❑ ❑ Is the flow meter operational? ® ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ M ❑ Comment Calibrated on 9/19/17 Pump Station - Influent Yes No NA NE 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 4 Influent pumps that pump to oxidation ditches or can be diverted to egulllzatlon basin Equalization Basins Yes No NA NE Is the basin aerated? ® ❑ ❑ ❑ Is the basin free of bypass lines or structures to the natural environment? ® ❑ ❑ ❑ Is the basin free of excessive grease? ❑ ❑ 0 ❑ Are all pumps present? ® ❑ ❑ ❑ Are all pumps operable? ❑ ❑ ❑ ❑ Are float controls operable? ❑ ❑ ❑ ❑ Are audible and visual alarms operable? ❑ ❑ ❑ # Is basin size/volume adequate? 0 ❑ ❑ ❑ Comment The plant has four basins that can be used for eaulllzatlon dunna larae storms and other emergencies None were being used at the time of the Inspection Oxidation Ditches Yes No NA NE Are the aerators operational? IS ❑ ❑ ❑ Are the aerators free of excessive solids build up? N ❑ ❑ ❑ # Is the foam the proper color for the treatment process? 11 ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? M ❑ ❑ ❑ Is the DO level acceptable? 0 ❑ ❑ ❑ Page# 5 Permit NCO026441 Owner - Facility Siler City VWVTP Yes No NA NE Type of system ? Gas ❑ Inspection Date 11/14/2017 Inspection Type Compliance Evaluation ❑ Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ Disinfection -Gas Yes No NA NE Is the level of chlorine residual acceptable? ❑ ❑ ❑ N Is the contact chamber free of growth, or sludge buildup? ■ ❑ ❑ ❑ Is there chlorine residual prior to de -chlorination? ❑ ❑ ❑ ■ Does the Stationary Source have more than 2500 lbs of Chlorine (CAS No 7782-50-5)? ❑ ❑ ❑ N If yes, then is there a Risk Management Plan on site? ❑ ❑ ❑ N If yes, then what is the EPA twelve digit ID Number? (1000-_ _) If yes, then when was the RMP last updated? Comment De -chlorination Yes No NA NE Type of system ? Gas ❑ ❑ ❑ 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? ❑ ❑ ® ❑ Comment Use Sulfur Dioxide Are tablet de -chlorinators operational? ❑ ❑ ® ❑ Number of tubes in use? Comment Aerobic Digester Yes No NA NE Is the capacity adequate? ❑ ❑ ❑ Is the mixing adequate? ® ❑ ❑ ❑ Is the site free of excessive foaming in the tank? ❑ ❑ ❑ # Is the odor acceptable? 11 ❑ ❑ ❑ # Is tankage available for properly waste sludge? 0 ❑ ❑ ❑ Comment Two circular aerobic digesters Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintai , ed? El 1:1 El Are the receiving water free of foam other tha In trace amounts and other debris? E ElEl F-1 If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ E ❑ Comment Page# 7