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Home My WebLink AboutNC0026271_Regional Office Historical File Pre 2018 (42)A7nA.!1�1- NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman Governor Director Secretary March 19, 2012 - Mr. David Robinette, Public Works Director Town of Taylorsville 67 Main Avenue Drive Taylorsville, NC 28681 Subject: Compliance Evaluation Inspection Taylorsville WWTP NPDES Permit No. NCO26271 Alexander County, North Carolina Dear Mr. Robinette: Enclosed please find a copy of the Compliance Evaluation Inspection Report for the inspection conducted at the subject facility on March 15, 2012 by Ms. Donna Hood and Mr. John Lesley of this Office. The facility staff should be commended for the overall condition of the wastewater treatment plant at the time of the inspection. The report, should be self-explanatory; however, should you have any questions concerning this report, please do not hesitate to contact Ms. Hood or me at (704) 663-1699. Sincerely, Robert B. Krebs Surface Water Protection Regional Supervisor Enclosure DH Mooresville Regional Office Location: 610 East Center Ave., Suite 301 Mooresville, NC 28115 Phone: (704) 663-16991 Fax: (704) 663-60401 Customer Service:1-877-623-6748 Internet: www.ncwaterauality.org NorthCarolina Naturally An Equal Opportunity 1 Affirmative Action Employer — 501% Recycled110% Post Consumer paper I— 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 2 151 31 NCO026271 111 121 12/03/15 117 181 C I 191 S I 20I 1I Remarks 211111111111111111 1111111111II 11111111 111111111116 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA -- ------------Reserved------- — 72I N 73I 75I I I I I I 800 1 70141 671 2711 1 W Li 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) 09:45 AM 12/03/15 10/05/01 Taylorsville WWTP Exit Time/Date Permit Expiration Date Minnigan Ln Taylorsville NC 28681 11:55 AM 12/03/15 15/03/31 Name(s) of Onsite kepresentative(s)fTitles(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 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 Sig tur (s) of Inspec r s) Agency/Office/Phone and Fax Numbers Date Donna Hood MRO WQ//704-663-1699 Ext.2193/ 31�5I�W11- John E Lesley MRO WQ!/704-663-1699 Ext.2198/ f Management QA Revi +;tier Agency/Office/Phone and Fax Numbers tte- nat�Al 1 F arciacco }—MRO WQ/1704-663-1699 Ext.22041 EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 NPDES yr/mo/day Inspection Type. 3 NCO026271 111 12, 12/03/15 117 181 Cl 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: 03/15/2012 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? ■ 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 n Comment: The permit is effective from 05/01/2010 to 03/31/2015. 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 Judge, and other that are applicable? Comment: The facility appeared well maintained and operated at the time of the inspection. For optimal operation, the faciltiy maintains a MLSS of approximately 6500 mg/I. Wasting rates are administered with the optimal MLSS in mind. Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? ■ ❑ n 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 ❑ Are analytical results consistent with data reported on DMRs? ■ n n n Is the chain -of -custody complete? ■ n 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 Is the ORC visitation log available and current? ■ ❑ n n Is the ORC certified at grade equal to or higher than the facility classification? ■ ❑ n n Is the backup operator certified at one grade less or greater than the facility classification? ■ n n n Page # 3 Permit: NCO026271 Inspection Date: , 03115/2012 Record Keeping Is a copy of the current NPDES permit available on site? Facility has copy of previous year's Annual Report on file for review? Owner -Facility: Taylorsville WWTP Inspection Type: Compliance Evaluation Comment: Records for January 2011-December 2011 were reviewed for the inspection. No violations were reported for the review period. Transcription errors for TSS on 11/15 and 11/16 were noted during the data review. An amended DMR for November 2011 was submitted at the time of the inspection. After submittal of the amended DMR to Raleigh per standard DMR submittal procedures, no further action is necessary. Laboratory Are field parameters performed by certified personnel or laboratory? Are all other parameters(excluding field parameters) performed by a certified lab? # 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)? Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees? Incubator (BOD) set to 20.0 degrees Celsius +/-1.0 degrees? Comment: The faciltiy is performing on -site analyses under field laboratory certification #5062. Water Tech labs, #50, performs all other necessary analyses. Aerobic Digester Is the capacity adequate? Is the mixing adequate? Is the site free of excessive foaming in the tank? # Is the odor acceptable? # Is tankage available for properly waste sludge? Comment: The digesters are not aerated. Sludge is land applied under permit WQ0006906. Currently, Southern Soil Builders is performing land application of the sludge. Chemical Feed Is containment adequate? Is storage adequate? Are backup pumps available? Is the site free of excessive leaking? Yes No NA NE ■ n n n ■nnn Yes No NA NE ■ n n n ■ n n n ■nnn ■nnn nn■n nn■0 Yes No NA NE ■ n n n ■ n n n ■ n n n ■ n n n ■ n n n Yes No NA NE ■nnn ■nnn ■nnn. ■nnn Page # 4 Permit: NCO026271 owner - Facility: Taylorsville WWTP Inspection Date: 03/15/2012 Inspection Type: Compliance Evaluation Chemical Feed Yes No NA NE Comment: A new lime slurry feed tank has been installed for alkalinity addition to the waste stream. Secondary containment for the silo is piped to discharge on the ground near the plant office. This should be monitored closely and covered in the spill response plan for the wastewater treatment plant. 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 El Are all pumps present? ■ ❑ n n Are all pumps operable? n n n ■ Are float controls operable? Is SCADA telemetry available and operational? ■ n n n Is audible and visual alarm available and operational? n n n ■ Comment: Bar Screens Yes No NA NE Type of bar screen n a.Manual b.Mechanical ■ Are the bars adequately screening debris? ■ n Is the screen free of excessive debris? ■ n n n Is disposal of screening in compliance? ■ n ❑ n Is the unit in good condition? ■ n n n Comment: A new mechanical bar screen has been installed. Additional curbing was also installed to prevent run-off of screening supernate onto the ground or into the storm drains. All supernate has been appropriately channeled back into the waste stream. Screenings are disposed of by GDS, Inc. Grit Removal Yes No NA NE Type of grit removal n a.Manual b.Mechanical ■ Is the grit free of excessive organic matter? ■ El ❑ n Is the grit free of excessive odor? ■ n ❑ n Page # 5 C Permit: NCO026271 Inspection Date: 03/15/2012 r--a+ o,,..,., 1 # Is disposal of grit in compliance? Owner - Facility: Taylorsville WWTP Inspection Type: Compliance Evaluation Comment: A new grit removal system has been installed. Additional curbing was also installed to prevent run-off of grit supernate onto the ground or into the storm drains. All supernate has been appropriately channeled back into the waste stream. Grit is disposed of by GDS, Inc. Aeration Basins Mode of operation Type of aeration system Is the basin free of dead spots? Are surface aerators and mixers operational? Are the diffusers operational? Is the foam the proper color for the treatment process? Does the foam cover less than 25% of the basin's surface? Is the DO level acceptable? Is the DO level acceptable?(1.0 to 3.0 mg/1) Comment: Both aeration basins were in use at the time of the inspection. 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'% of the sidewall depth) Yes No NA NE ■nnn Yes No NA NE Ext. Air Diffused ■nnn nn■n ■ n n n ■nnn ■nnn ■ n n n ■nnn Yes No NA NE ■nnn n ■ n n ■nnn n n n ■nnn ■nnn ■ n n n ■nnn ■nnn ■nnn ■nnn Comment: Some floating sludge was visible on the day of the inspection but did not appear to negatively impact the clarifer effluent. Disinfection -Gas Yes No NA NE Page # 6 Permit: NCO026271 Owner - Facility: Taylorsville WWTP Inspection Date: 03/15/2012 Inspection Type: Compliance Evaluation Disinfection -Gas Yes No NA NE Are cylinders secured adequately? ■ n ,n. n Are cylinders protected from direct sunlight? ■ rl n n Is there adequate reserve supply of disinfectant? ■ n n n Is the level of chlorine residual acceptable? ■ 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 n ■ If yes, then is there a Risk Management Plan on site? n n ■ n If yes, then what is the EPA twelve digit ID Number? (1000- - ) If yes, then when was the RMP last updated? Comment: The chlorine contact chamber is pumped several times a year to maintain minimal solids in the basin. De -chlorination Yes No NA NE Type of system ? Gas Is the feed ratio proportional to chlorine amount (1 to 1)? ■ o n n ■ n n n Is storage appropriate for cylinders? # Is de -chlorination substance stored away from chlorine containers? ■ n n n Comment: Are the tablets the proper size and type? Are tablet de -chlorinators operational? Number of tubes in use? Comment: The ventilation fan for the sulfur dioxide building was in questionable condition. Please investigate the reliability of the kick start fan motor and replace it if necessary. 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? nn■n nn■n Yes No NA NE Page # 7 Permit: NC0026271 Inspection Date: 03/15/2012 Owner - Facility: Taylorsville WWTP Inspection Type: Compliance Evaluation Standby Power Is there an emergency agreement with a fuel vendor for extended run on back-up power? Is the generator fuel level monitored? Comment: The on -site generator was exercised per preset schedule during the inspection. 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: The effluent flow meter was last calibrated by Johnston Controls, Inc on September 14, 2011. Influent Sampling # Is composite sampling flow proportional? Is sample collected above side streams? Is proper volume collected? Is the.tubing clean? # 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? Comment: Effluent Sampling Is composite sampling flow proportional? Is sample collected below all treatment units? Is proper volume collected? 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 sampler tubing on the pump should be replaced immediately. Effluent Pipe Is right of way to the outfall properly maintained? Are the receiving water free of foam other than trace amounts and other debris? Yes No NA NE ■nnn ■nnn Yes No NA NE ■ n n n ■nnn ■ n n n ■nnn Yes No NA NE n n n ■ ■ n n n n n n ■ nnn■ ■nnn ■ n n n Yes No NA NE nnn■ ■nnn nnn® n■nn ■nnn ■nnn Yes No NA .NE ■nnn nnn■ Page # 8 C Permit: NC0026271 Inspection Date: 03/15/2012 Effluent Pipe If effluent (diffuser pipes are required) are they operating properly? Comment: Owner - Facility: Taylorsville WWTP Inspection Type: Compliance Evaluation Yes No NA NE Page # 9