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Home My WebLink AboutNC0026271_Regional Office Historical File Pre 2018 (47)Ai��®® NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H.,Sullins Dee Freeman_ Governor Director Secretary May 5, 2009 Mr. David M. Robinette, Public Works Director Town of Taylorsville 67 Main Avenue Drive Taylorsville, North Carolina 28681 Subject:, Compliance Evaluation Inspection Town of Taylorsville WWTP NPDES Permit No. NCO026271 Alexander County, NC Dear Mr. Robinette: Enclosed.please find a copy of the Compliance Evaluation Inspection Report for the inspection conducted at the subject facility on April 22, '2009, by Mr. Wes Bell of this Office. Please inform the facility's Operator -in -Responsible Charge of our findings by forwarding a copy of the enclosed report. It is requested that a written response be submitted to this Office by May 26, 2009 addressing the deficiency noted in the Influent Sampling Section of the report. In addition, the response should include the actions taken to address the housekeeping issues (bar screen and -lower digestor areas) and the Town's effort's to ensure the facility will be equipped with adequate composite samplers to collect flow proportional samples at appropriate preservation temperatures. In responding, please address your , comments to the attention of Ms. Marcia Allocco. The report should be self-explanatory; -however, should you have any questions concerning the report, please do not hesitate to contact Mr. Bell or me at (704) 663-1699. Sincerely, RobertB. Krebs Surface Water Protection Regional Supervisor Enclosure: Inspection Report cc: Alexander County Health Department WB Mooresville Regional Office Location: 610 East Center Ave., Suite 301 Mooresville, NC 28115 One Phone: (704) 663-16991 Fax: (704) 663-6040 1 Customer Service: 1-877-623-6748 N6ftKaro1illa Internet: www.ncwaterquality.org % An Equal Opportunity 1 Affirmative Action Employer — 50% Recycled/10% Po$t Consumer paper N/ y ` a l [f�r�yr�y/r�/ C 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 I NI 2 15I 31 NCO026271 111 121 09/04/22 117 181 CI 191 SI 20I Remarks 211 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 16 Inspection Work Days Facility Self -Monitoring Evaluation Rating 131 QA --------------------Reserved----------- — 67 I 1.5 169 70141 711 NJ 721 NJ 73 IWI 17,4 751 I I I I I I 180 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) 05/07/01 09:45 AM 09/04/22 Taylorsville WWTP Exit Time/Date Permit Expiration Date Minnigan Ln Taylorsville NC 28681 01:12 PM 09/04/22 10/03/31 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/Title/Phone and Fax Number David Matthew Robinette,67 Main Ave Dr Taylorsville NC 28681/PublicontaCted 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 / � Ext.2192/ Lf�� Wesley N Bell f MRO WQ//704-663-1699 Signature of Management Q A Revi wer Agency/Office/Phone and Fax Numbers Date r� Mar is A1 occo MRO WQ//704-663-1699 Ext.2204/ EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 NPDES yr/mo/day Inspection Type 1 3� NCO026271 I11 12I 09/04/22 1 17 18ICI 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: 04/22/2009 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 ■ n Is the facility as described in the permit?. ®❑ Q n # Are there any special conditions for the permit? ❑ n ■ fl .... _.. ___ 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 n Comment: The subject permit expires on 3/31110. 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 n Are all records maintained for 3 years (lab. reg. required 5 years)? ■ n n n Are analytical results consistent with data reported on DMRs? ■ n n n Is the chain -of -custody complete? ■ n ❑ n 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? ■ n n n Has the facility submitted its annual compliance report to users and DWQ? ■ n n n (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? n n ■ n Is the ORC visitation log available and current? ■ n n n Is the ORC certified at grade equal to or higher than the facility classification? ■ n n n Is the backup operator certified at one grade less or greater than the facility classification? ® n ❑ n Is a copy of the current NPDES permit available on site? ■ n ❑ n Facility has copy of previous year's Annual Report on file for review? ■ n n n Page # 3 Permit: NCO026271 Owner -Facility: Taylorsville VVVVTP Inspection Date: 04/22/2009 Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Comment: The records were organized and well maintained. DMRs were reviewed for the period February 08 through January 09. No effluent limit violations were reported. The facility failed to achieve 85% removal efficiency for total suspended solids in August 08 and December 08. No effluent total nitrogen or total phosphorus were reported for the third quarter of 2008; however, the inspection verified the discrepancies -- -----were transcription -errors. An-amended-DMR will be resubmitted. - - 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? ■ ❑ ❑ ❑ # Is the facility using a contract lab? ■ ❑ fl # 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? ❑ Q ■ ❑ Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? n ❑ ■ n Comment: On -site field analyses (pH, temperature,• total residual chlorine) are performed under laboratory certification #5062. Water Tech Labs (Certification #50) and R & A Laboratories (Certification #34) have also been contracted to provide analytical support. Please refer to Mr. Chet Whiting's. (Division's Laboratory Certification Unit) inspection report regarding the facility's on -site laboratory practices. Influent Sampling Yes No NA NE # Is composite sampling flow proportional? ❑ ■ ❑ ❑ ■nnn Is sample collected above side streams? ■nnn Is proper volume collected? ■ ❑ El 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 sampling performed according to the permit? n■00 Comment: Flow proportional sampling had been performed during the DMR review period; however, the facility was currently collecting time -based composite samples (140 mi. aliquot per hour). The ORC has had periodic problems with the new sampler (CF switch) and a recent problem with the- backup sampler. The temporary sampler being used by the ORC is not equipped to collect flow proportional samples and provide adequate preservation/refrigeration. The permittee'and ORC must ensure the facility is equipped with samplers (including backup samplers) capable of collecting and preserving flow proportional samples. Please be advised that the failure to monitor the influent/effluent according to the permit can subject the permittee to civil penalties. Yes No NA NE Effluent Sampling ■nnn Is composite sampling flow proportional? Page #• 4 Permit: NCO026271 Inspection Date: 04/22/2009 Effluent Sampling Is sample collected below all treatment units? Is proper volume collected? Owner -Facility: Taylorsville WWfP Inspection Type: Compliance Evaluation Is the tubing clean? # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type representative)? Comment: The ORC must ensure the present gallon interval between the collection of each composite sample (influent and effluent) is fixed at no greater than 1/24 of the expected total daily flow at the treatment system. ■ n n n ■nnn ■nnn ■nnn ----..-.- ■nnn Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? n ■ 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: Overall, the facility appeared to be properly operated and well maintained; however, the housekeeping around the bar screen, RAS pump station, and lower digester areas needed improvement. Screenings were observed on the ground (bar screen area) and a small amount of wastewater solids had accumulated on the ground adjacent to one of the lower digesters and RAS pump station. The ORC and staff must. ensure all screenings and wastewater solids are properly removed and disposed. Bar Screens Type of bar screen a.Manual n b.Mechanical ■ Are the bars adequately screening debris? ■ n n n Is the screen free of excessive debris? ■ ❑ ❑ ❑ Is disposal of screening in compliance? ■ n n n Is the unit in good condition. ■nnn Comment: Screenings are transported to the GDS Landfill in Hickory, N.C. Aeration Basins Yes No NA NE Mode of operation Ext. Air • Type of aeration system Diffused Is the basin free of dead spots? ■ n n n Are surface aerators and mixers operational? ■ n n n Are the diffusers operational? ■ n n n Page # 5 Permit: NCO026271 Owner -Facility: Taylorsville'hVVfP Inspection Date: 04/22/2009 Inspection Type: Compliance Evaluation Aeration Basins Yes No NA NE Is the foam the proper color for the treatment process? ■ Does the foam cover less than 25% of the basin's surface? ® ❑ n n Is the DO level acceptable? ■ n ❑ n Is the DO level acceptable?(1.0 to 3.0 mg/I) ■ ❑ ❑ Comment: The facility uses two aeration basins. Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? ■ Is the site free of excessive buildup of solids in center well of circular clarifier? ■ n n n . Are weirs level? ■ n n n Is the site free of weir blockage? ■ n n n Is the site free of evidence of short-circuiting? ■ n n ❑ Is scum removal adequate? ■ n n ❑ Is the site free of excessive floating sludge? ■ ❑ ❑ n Is the drive unit operational? ■ ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? ■ n n n Is the overflow clear of excessive solids/pin floc? ■ n n n Is the sludge blanket level acceptable? (Approximately % of the sidewall depth) ■ n n n Comment: The facility uses two secondary clarifiers. Disinfection -Gas Yes No NA NE Are cylinders secured adequately? ■ n n n Are cylinders protected from direct sunlight? ■ n n n Is there adequate reserve supply of disinfectant? ®n n n Is the level of chlorine residual acceptable? ■ n n n Is the contact chamber'free of growth, or sludge buildup? ■ n 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 If yes, then is there a Risk Management Plan on site? ❑ n ■ n If yes, then what is the EPA twelve digit ID Number? (1000- ) If yes, then when was the RMP last updated? Page # 6 Permit: NCO026271 Inspection Date: 04/22/2009 Owner -Facility: Taylorsville VWVTP Inspection Type: Compliance Evaluation Disinfection -Gas Yes No NA NE Comment: The facility uses two chlorine contact chamber trains. The ORC indicated that both chlorine contact chamber trains are pumped out approximately two to three times per year to minimize any buildup of solids. De -chlorination Yes No NA NE Type of system ? Gas Is the feed ratio proportional to chlorine amount. (1 to 1)? ■ ❑ n n Is storage appropriate for cylinders? ■ n n n # Is de -chlorination substance stored away from chlorine containers? ■ n ❑ n Comment: Are the tablets the proper size and type? nn■n Are tablet de -chlorinators operational? n n ■ ❑ Number of tubes in use? Comment: Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? ■ n n n Is flow meter calibrated annually? ■ n n n Is the flow meter operational? . ■ n (If units are separated) Does the chart recorder match the flow meter? n n ■ n Comment: The flow meter is calibrated annually and was last.calibrated on 12/9/08.by Johnston, Inc. 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? ■ ❑ ❑ ❑ If effluent (diffuser pipes are required) are they operating properly? n n ■ n Comment: The effluent appeared slightly turbid with trace suspended solids and no foam. The receiving stream did not appear to be negatively impacted. This Office commends the Town's efforts to clear and maintain the outfall right of way. 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 n # Is the odor acceptable? ■ n n n Page # 7 Permit: NCO026271 Inspection Date: 04/22/2009 owner - Facility: Taylorsville VwVrP Inspection Type: Compliance Evaluation Aerobic Digester # Is tankage available for properly waste sludge? ■ Q ❑ ❑ Comment: The facility uses four aerobic digesters. The sludge is lime stabilized prior to land application. Land application is performed by PLA, Inc. under the authority of Permit No. WQ0006906. 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: The backup generator is tested twice per month and put under load on a monthly basis. The backup generator powers the entire plant except for the digester blowers that are mainly used for mixing during the lime stabilization process. Page # 8 MAYOR Guy E. Barriger Town of Tay fo rs v iffe 67 Main Avenue Drive • Taylorsville, NC 28681 Phone (828) 632-2218 • FAX (828) 632-7964 May 11, 2009 COMMISSIONERS Attn: Ms. Marcia Allocco Glenn P. Deal Mooresville Regional Office Bob Phillips 610 East Center Ave. Suite 301 George B. Holleman Mooresville, NC 28115 TOWN MANAGER David_Odom-- - --- -- - — -- --—Sublect Compliance Evaluation Inspection TOWN CLERK Taylorsville WWTP Yolanda T. Prince NPDES #NC0026271 Alexander County, NC Ms. Allocco, Fft -- _ __ - _ MAY 1-2-_20-09 _ t`N V ' i Caf This letter is in response to the Compliance Evaluation Inspection report sent to me as conducted by Mr. Wes Bell on April 22, 2009. RECORD KEEPING: An ammended report for the third quarter of 2008 (July 2008 DMR) has been submitted to the state with transcription error corrected. INFLUENT SAMPLING: The faulty influent sampling (refrigerated) unit was sent to the manufactorer for repairs and has been placed back into proper operation and set to flow proportionate statis. Johnston Inc. has been contacted to check both the Influent and Effluent4- 20v flow signals (count frequentcies) to insure proper volume is being taken each 24 hour period. Also, we will insure that 1/24 limit on sampling is not exceeded. OPERATION & MAINTENANCE: The lower digester "solids" on the grassy area during inspection was due to decanter repairs the day before. It was much worse before cleaning, however; additional — efforts were made following your inspection to clean all of the areas noted in your report. If you have any questions concerning our responsive actions, please contact me at your earliest conveinience. Thank you. Sincerely, Brian Eades, WWTP ORC The Town of Taylorsville does not discriminate on the basis of race, color, national origin, sex, religion, age or disability in employment or the provision of services