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Home My WebLink AboutNC0026271_Regional Office Historical File Pre 2018 (39)A1 NCDENR North Carolina Department of Environment and Natura Division of Water Resources Water Quality Regional Operations Section Pat MCC rory Thomas A. Reeder Governor Director December 20, 2013 Mr. David Robinette, Public Works Director Town of.Taylorsville 67 Main Avenue Drive Taylorsville, North Carolina 28681 Fi-LUF= Resources Subject: Compliance Evaluation Inspection Town of Taylorsville WWTP NPDES Permit No. NCO026271 Alexander County Dear Mr. Robinette: John E. Skvarla, III Secretary Enclosed please find a copy of the Compliance Evaluation Inspection report for the inspection conducted at the subject facility on December 5, 2013, by Ms. Marcia Allocco and Mr. Wes Bell of this office. Please ensure that a copy of the enclosed report is forwarded to the facility's Operator -in - Responsible -Charge (ORC). Thank you for your efforts to comply with the requirements of your permit. This report should be self- explanatory; however, should you have any questions concerning the report, please do not hesitate to contact me at (704) 235-2204 or marcia.allocco@ncdenr.gov. Sincerely, Marcia Allocco, MS Environmental Senior Specialist Water Quality Regional Operations cc: Point Source Branch MA Mooresville Regional Office Location: 610 East Center Ave., Suite 301 Mooresville, NC 28115 Phone: (704) 663-16991 Fax: (704) 663.6040 \ Customer Service: 1-877-623-6748 Internet: http://portal,ncdenr.org/weblwq An Equal Opportunity \ Affirmative Action Employer - 30% Recycled/10% Post Consumer paper NorthCarolina Naturally United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 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 INI 2 15 I 31 NCO026271 111 121 13/12/05 117 18I C I 19I S I 20I I. Remarks 2111111111IIIIIIII I I I I I I I I IIIIIIIIIIIIIIII11111116 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA — -------Reserved---------- 67I 1.5 169 70141 711 N I 721 NJ 73I I' 74 751 I I I I I I 180 L� 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) Taylorsville WWTP 09:35 AM 13/12/05 10/05/01 Exit Time/Date Permit Expiration Date Minnigan Ln Taylorsville NC 28681 11:40 AM 13/12/05 15/03/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Steve Brian Eades/ORC/828-632-5280/ Name, Address of Responsible Official/Tifle/Phone and Fax Number Contacted David Matthew Robinette,67 Main Ave Dr Taylorsville NC 28681/Public Works Director/828-632-2218/ 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 Wes Bell MRO WQ//704-663-1699 Ext.2192/ Marcia Allocco _ MRO WQ//704-663-1699 Ext.2204/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 NPDES yr/mo/day 3I NCO026271 I11 ' 12I 13/12/05 117 Inspection Type 18I CI . Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page # 2 Permit: NCO026271 Owner - Facility: Taylorsville WWTP Inspection Date: 12/05/2013 1 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 application? n n ■ Is the facility as described in the permit? ■ n n ❑ # Are there any special conditions for the permit? n ■ n n Is access to the plant site restricted to the general public? ■ n n n Is the inspector granted access to all areas for inspection? ■ n ❑ n Comment: The current permit was issued on May 1, 2010, and expires on March 31, 2015. The WWTP was last inspected (compliance evaluation inspection) on March 15, 2012. Operations $ Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? ■ ❑ n n Does the facility analyze process control parameters, for ex: MLSS., MCRT, Settleable Solids, pH, DO, Sludge ■ n n n Judge, and other that are applicable? Comment: Thefacilityappeared to be properly operated and well maintained. The ORC and staff have incorporated an extensive process controlr program. The facility is equipped with a SCADA system and dissolved oxygen and pH PLC controllers are installed in the aeration basins for process control. Pump Station - Influent Yes No NA NE Is the pump wet well free of bypass lines or structures? ■ n n n Is the wet well free of excessive grease? ■ n n n Are all pumps present? ■ n n n Are all pumps operable? ■ ❑ ❑ n Are float controls operable? n n ■ Is SCADA telemetry available and operational? ■ Cl Cl n Is audible and visual alarm available and operational? n n ■ Comment: There is a high-level alarm installed in the influent pump station but it cannot be manually activated. Pump station would flow via gravity if pumps were to fail; SCADA tied to pump station. Rar Rr-rppns Yes No NA NE Type of bar screen a.Manual ■ b.Mechanical ■ Are the bars adequately screening debris? ■ ❑ ❑ n Page # 3 Permit: NCO026271 Owner -Facility: Taylorsville WWTP Inspection Date: 12/05/2013 Inspection Type: Compliance Evaluation Q ,. C........,� Yps Nn No NF Is the screen free of excessive debris? ■ n n n Is disposal of screening in compliance? ■ n n n Is the unit in good condition? ■ n n ri Comment: h..:a 0...�.... ,..� Vey M_ IJA KIP Type of grit removal a.Manual n b.Mechanical ■ Is the grit free of excessive organic matter? ■ n n n Is the grit free of excessive odor? - ■ ❑ n n # Is disposal of grit in compliance? ■ n n ❑ Comment: Influent Sampling Yes No NA NE # Is composite sampling flow proportional? , ■ ❑ n n Is sample collected above side streams? ■ n n n Is proper volume collected? ■ ❑ Is the tubing clean? ■ n ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ■ n n n Is sampling performed according to the permit? ■ n ❑ ❑ Comment: ' The ORC and staff must ensure that they conduct and document aliquot verifications (100-mL per aliquot minimum) on the composite samplers (influent and effluent) on a periodic basis. Any maintenance or repairs performed on the samplers e.g. tubing replacement should also be documented. The influent composite sampler was collecting 150 mL per aliquot when tested; the thermometer within the refrigerated sampler was 2 degrees C. Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? ❑ ■ n Is flow meter calibrated annually? ■ n n ❑ Is the flow meter operational? ■ n n n (If units are separated) Does the chart recorder match the flow meter? n n n ■ Page # 4 f Permit: NCO026271 owner - Facility: Taylorsville WWTP Inspection Date: 12/05/2013 Inspection Type:, Compliance, Evaluation Flow Measurement - Influent Yes No NA NE Comment: The flow meter is calibrated/verified once per year and was last calibrated/verified on 1/21/13 by Johnston, Inc. Aeration Basins Yes No NA NE Ext. Air Mode of operation Diffused Type of aeration system Is the basin free of dead spots? ■ ❑ n n Are surface aerators and mixers operational? ■ ❑ n Are the diffusers operational? ■ ❑ ❑ n Is the foam the proper color for the treatment process? ■ ❑ fl 0 Does the foam cover less than 25% of the basin's surface? ■ n n n Is the DO level acceptable? ■ Cl❑ Is the DO level acceptable?(1.0 to 3.0 mg/1)' ■ n ❑ fl Comment: The MLSS was —5,000 mg/L during the inspection. Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? ■ rl ❑ fl Is the site free of excessive buildup of solids in center well of circular clarifier? ■ n El n Are weirs level? ■ Q ❑ fl Is the site free of weir blockage? ■ n Is the site free of evidence of short-circuiting? ■ n ■nnn Is scum removal adequate? Is the site free of excessive floating sludge? ■ E, ❑ I] Is the drive unit operational? ■ f,] Is the return rate acceptable (low turbulence)? ■ ❑ n 0 Is the overflow clear of excessive solids/pin floc? ■nnn Is the sludge blanket level acceptable? (Approximately % of the sidewall depth) ■ 0 0 Q Comment: There was some grease noted on clarifier #1. Yes No NA NE Disinfection -Gas ■nnn Are cylinders secured adequately? Are cylinders protected from direct sunlight? ■ ❑ Q ❑ Is there adequate reserve supply of disinfectant? ■ 0 El Page # 5 Permit: NCO026271 Inspection Date: 12/05/2013 Owner - Facility: Taylorsville WWTP Inspection Type: Compliance Evaluation 11 Disinfection -Gas Yes No NA NE Is the level of chlorine residual acceptable? ■ n n n Is the contact chamber free of growth,_or sludge buildup? ■ n ❑ n Is there chlorine residual prior to de -chlorination? ■ n n n Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? n ■ n n If yes, then is there a Risk Management Plan on site? n n ■ 0 If yes, then what is the EPA twelve digit ID Number? (1000- - ) If yes, then when was the RMP last updated? Comment: The chlorination and dechlorination systems were serviced on 1/15/13 by Piedmont Chlorinator Sales and Service, Inc. De -chlorination Yes No NA NE Type of system ? Gas Is the feed ratio proportional to chlorine amount (1 to 1)? n n n ■ Is storage appropriate for cylinders? ■ n n n # Is de -chlorination substance stored away from chlorine containers? n n n Are the tablets the proper size and type? n n ■ n Comment: Sulfer dioxide is used for disinfection. Are tablet de -chlorinators operational? n n ■ n Number of tubes in use? Comment: Aerobic Digester Yes No NA NE Is the capacity adequate? ■ n n n Is the mixing adequate? n n n ■. Is the site free of excessive foaming in the tank? ■ n ❑ n # Is the odor acceptable? ■ n n n # Is tankage available for properly waste sludge? ■ n n n Comment: Three of the four digesters were empty during the inspection. Residuals are land applied by Southern Soil Builders under WQ0006906. Chemical Feed Yes No NA NE Is containment adequate? moo n Is storage adequate? ■ n ❑ n Page # 6 Permit: NC0026271 Inspection Date: 12/05/2013 Owner - Facility: Taylorsville WWTP Inspection Type: Compliance Evaluation Chemical Feed Yes No NA NE Are backup pumps available? n ❑ 0 ■ Is the site free of excessive leaking? ■ ❑ r1 ❑ Comment: The facility was recently equipped with a permanent lime slurry feed tank for alkalinity addition to add in waste treatment. Standby Power Yes No NA NE Is automatically activated standby power available? ■ Q 0 Is the generator tested by interrupting primary power source? ■ Q ■ ❑ 0 Q Is the generator tested under load? Was generator tested & operational during the inspection? ■ ❑ n Do the generator(s) have adequate capacity to operate the entire wastewater site? ■ n Cl Is there an emergency agreement with a fuel vendor for extended run on back-up power? ■ fl ■ n fl 0 Is the generator fuel level monitored? Comment: The generator powers the entire WWTP should power be interrupted. The generator is auto cycled once per week and placed under load a few times per year. The generator is serviced annually and was last serviced by Carolina CAT on 117/13. Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? ■ n CT Is flow meter calibrated annually? ■ El ❑ El ■❑nn Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? nnnn i Comment: The flow meter is calibrated/verified once per year and was last calibrated/verified on 1/21/13 by Johnston, Inc. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? ■ ❑ is sample collected below all treatment units? ■nnn is proper volume collected? ■nnn Is the tubing clean? # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ■ n n n Is the facility sampling performed as required by the permit (frequency, sampling type representative)? ■ Q n 0 Page # 7 Permit: NCO026271 Inspection Date: 12/05/2013 Owner - Facility: Taylorsville WWTP Inspection Type: Compliance Evaluation Effluent Sampling Yes No NA NE Comment: The ORC and staff must ensure that they conduct and document aliquot verifications (100-mL per aliquot minimum) on the composite samplers (influent and effluent) on a periodic basis. Any maintenance or repairs performed on the samplers e.g. tubing replacement should also be documented. The influent composite sampler was collecting 190 mL per aliquot when tested; the thermometer within the refrigerated sampler was 5 degrees C. Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? ■ n n n Are the receiving water free of foam other than trace amounts and other debris? n n ❑ ■ If effluent (diffuser pipes are required) are they operating properly? n n ■ n Comment: Laboratory Yes No NA NE Are field parameters performed by certified personnel or laboratory? ■ n n n Are all other parameters(excluding field parameters) performed by a certified lab? ■ n n n # Is the facility using a contract lab? ■ n n n . # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ■ n n n Incubator.(Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees? n n ■ Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? n n ■ n Comment: On -site analyses (pH and TRC) are performed under field laboratory certification #5062 (Town of Taylorsville). Water Tech Labs, Inc. (Certification #50) performs all remaining permit -required effluent analyses and Research and Analytical Laboratories has been contracted for WET testing. The field instrumentation used on site appeared to be properly calibrated and documented; daily calibration/verification data is entered in the ORC log book. The field instrumentation is calibrated annually by Water Tech labs, Inc. All instrumentation was calibrated in January 2013. Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? ■ ❑ ❑ n Is all required information readily available, complete and current? ■ n ❑ n Are all records maintained for 3 years (lab. reg. required 5 years)? ■ n 00 Are analytical results consistent with data reported on DMRs? ■ n n n Is the chain -of -custody complete? ■ n 00 Dates, times and location of sampling ■ Name of individual performing the sampling ■ Page # 8 Permit: NCO026271 Owner - Facility: Taylorsville WWTP Inspection Date: 12/05/2013 inspection Type: Compliance Evaluation \I- \IA AIC Record Keeping 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 2417 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? Comment: The permittee's records were organized and well maintained and records requested during the inspection were readily available. DMRs were reviewed for the period October 2012 through September 2013. No limit violations were reported and all monitoring frequencies were correct. The submitted DMRs have noted Water Tech Labs, Inc. (laboratory certification #50)'as the certified laboratory. used for permit required analytical support. Please add the Town of•Taylorsville and Research and Analytical Laboratories as certified laboratories on future DMR submissions. The permittee has been using parameter code 00094 to report effluent conductivity concentrations; the correct parameter code is 000095. The 2012 annual report was reviewed on site; sent to users on 7/30/13. Page # 9