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HomeMy WebLinkAboutNC0081825_Inspection_20010731Department of Environment arid Natural Resources Division of Water Quality Fayetteville Regional Office Michael F. Easley, Governor William G. Ross, Jr., Secretary Kerr T. Stevens, Director July 3, 2001 The Honorable Joe Estridge Mayor, Town of Ansonville PO Box 437 Ansonville, NC 28007 SUBJECT: Compliance Evaluation Inspection Town of Ansonville Wastewater. Treatment Plant NPDES Permit No. NC0081825 Anson County Dear Mayor Estridge: NCDENR Enclosed is a copy of the Compliance Evaluation Inspection report for the inspection conductedJune 26, 2001. As part of the inspection, a tour of the Wastewater Treatment Plant was conducted. All observations and recommendations are in Part D. Summary of Findings/Comments of this report. The priority of all wastewater treatment facilities should be complete compliance with the NPDES permit which will ensure the best quality effluent discharged to our receiving streams. Please review the attached report. If you or your staff have any questions or comments do not hesitate to contact me at 910-486-1541. • Don Register Environmental Technician DR/bs. Enclosures visc: rBelindaiHerrtson 225 GREEN STREET - SUITE 714 / SYSTEL BUILDING / FAYETTEVILLE, NC 28301-5043 • PHONE (910) 486-154r FAX (910) 486-0707 W WW.ENR•STATE.NC.US/ENR/ AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER- 50% RECYCLED/10% POST CONSUMER PAPER DENR TOLL FREE HOTLINE: 1-877-623-6748 NPDES COMPLIANCE INSPECTION REPORT North Carolina Division of Water Quality Fayetteville Regional Office Section A. National Data System Coding Transaction Code: N NPDES NO.. NC0081825 Date: 010626 Inspection Type: B Inspector: S Facility Type: 1 Reserved: Facility Evaluation Rating: 4 BI: D QA: N Reserved: Section B: Facility Data Name and Location of Facility Inspected: Town of Ansonville Entry Time: 12:30 PM. ' Permit Effective Date: 980701 Exit Time/Date: 2:30 PM / 010626 Permit Expiration Date: 030630 Name(s), Title(s) of On -Site Representative(s): Daniel Wilson (Certified Grade II) - ORC and Utility Director Preston Lewis (Certified Grade III) - Back -Up ORC, Anson County Phone Number(s): 704-826-8404 / 704-695-5682 (mobile) Name, Title and Address of Responsible Official: Mayor Joe Estridge PO Box 437 Ansonville, NC 28007 Section C: Areas Evaluated During Inspection Contacted: No (S = Satisfactory, M = Marginal, U = Unsatisfactory, N = Not Evaluated, N/A = Not Applicable) RecordslRep taCl y Sitee rie : ?tawMeasremer ora <Nretr.:eg.... ..................... p►tan: a SCne. Dllit Mi l ro upera, nnamtenance : SI.i Qge jsp0'sel Section D: Summary of Findings/Comments: 1. The manual bar screen was operational. The screenings are disposed of through the County landfill.. 2. The aeration basin appeared to be aerating adequately. 3. Disinfection of the effluent occurs through ultraviolet light. Chlorine tablets are used as a backup method of disinfection. An Authorization to Construct must be submitted to NC DENR / DWQ for the addition of a chorination- dechlorination system. A suggestion from this office would be to check the detention time of the effluent from where chlorine is added to where samples are collected. The detention time for chlorinated effluent must be at least thirty minutes to assist in eliminating fecal coliform violations. Hobbs and Upchurch is designing a liquid dechlorination system to replace the ultraviolet disinfection (to be constructed 2002). This office highly recommends that a telemetry system to monitor the blowers at the WWTP be considered for the coming year. Monthly violations occurred during the month of March could have been prevented with a telemetry system. Because the WWTP is not manned seven days per week, 24 hours per day, this alarm system can easily pay for itself by eliminating power/equipment failure resulting in no or fewer assessments for permit violations. 4. The effluent appeared to be free of solids. 5. The effluent outfall is located approximately two (2) miles from the facility to the Pee Dee River. 6. Various area railings, piping and etc., appeared to paint worn from the surfaces. These areas are scheduled to be painted in the 2001-2002 fiscal year. 7. Sludge disposal is through pumping and hauling to the Anson County WWTP. 8. The NPDES Permit and Operator Log were available upon request. 9. The effluent flow meter was calibrated December 11, 2000, by Nix, Purser and Associates, Inc. It is advisable that the flow meter calibration document contain the % error before and after calibration in the future by the technician. 10. The following NPDES permit required parameters are analyzed on site: pH, Temperature, Dissolved Oxygen and Residual Chlorine. All other parameters are analyzed by Pace Analytical Laboratory. 11. A compliance evaluation analysis report for the period April 2000 through March 2001 revealed the following violations: June - Fecal Coliform (monthly violation) June, July, August - BOD (monthly violation) June, July - TSS (monthly violation) • Majority of the non-compliance were due to Premiere Fibers oil discharge. Problem was corrected by Pretreatment Section from this office.. Fiber is now categorical industry. Process control is judged by the two (2) clarifier returns. The final clarifier blanket and the thickness of the return determines the wasting. 12. Laboratory records were reviewed for the period December 2000 and January 2001. All data appeared to be accurately reported when compared to Discharge Monitoring Reports (DMR). As a reminder, all less than (<) or greater than (>) signs should be reported on the DMRs as stated on laboratory reports, Section D: Summary of Findings/Comments (continued): 13. All Operations and Maintenance manuals for this facility should be on site to assist in repairs and maintenance. 14. As a reminder as per our Administrative Code Section: 15A NCAC 2B.0506(b)(3)(F)(I) - the date on which collection of composite samples is commended or data shall be entered into the monitoring report form is the date that has the greater number of hours in it. The following examples will assist you in understanding the reporting date: a. If the composite sample is started on Tuesday, February 8, at 9:00 AM and the sample is withdrawn from the composite sampler on Wednesday, February 9, at 9:00 AM; the day with the greater number of hours in it is Tuesday, February 8. b. If the composite sample is started on Tuesday, February 8, at 6:00 PM and the sample is withdrawn from the composite sampler on Wednesday, February 9, at 6:00 PM; the day with the greater number of hours in it is Wednesday, February 9. Name and Signature of Inspector Don Register Name and Signature of Review Paul Rawls Action Taken Agency/Office/Telephone Date DENR/Fayetteville/910-486-1541 gency/OfficelTelephone DENR/Fayetteville/910-486-1541 Regulatory Office Use Only Compliance Status _Noncompliance _Compliance 7-//-0 Date '6( 1� Date Section D. Summary of Findings/Comments Brief Facility Description: Town of'Ansonville's WWTP consists of an aerated equalization chamber, aeration chambers, conical bottom clarifiers, chlorine contact 'chamber, ultraviolet disinfec- tion and aerated sludgeholding chamber FACILITY SITE REVIEW is No N/A 1. Treatment units properly operated and maintained. 1:50 No N/A 2. • Standby power or other equivalent provision provided. Yes ct N/A 3. Adequate alarm system for power or equipment failure available. 4. Sludge disposal procedures appropriate: No N/A a. Disposal of sludge according to regulations es No N/A b. State approval for sludge disposal received. No N/A 5. All treatment units other than backup units in service. Cl) No N/A 6. Sufficient sludge disposed of to maintain treatment process equilibrium. No N/A 7. Adequate number of qualified operatorson staff. tca No N/A 8. Established procedures available for training new employees. No N/A 9. Adequate spare parts and supplies inventory maintained. C) No N/A 10. a. Hydraulic overflows and/or organic overloads experienced Yes es) N/A b. Untreated bypass discharge occurs during power failure Yes N/A . c. Untreated overflows occurred since last inspection. No N/A 11. Plant has general safety structures such as rails' around or covers over tanks, pits, or wells. GI No N/A 12. Plant is generally clean, free from open trash areas. No N/A Yes No Mk Yes VT N/A No N/A Yes No �I�A Yes No N/A Yes No N/A 13. Screening: a. Manual b. Mechanical c. Buildup of debris . d. Screenings properly disposed of. 14. Grit Removal: a. Excessive organic content in the grit chamber b. Excessive odors . . c. Grit properly disposed of. 15. Primary, clarifier: Yes No t/ a: Excessive gas bubbles Yes No N/A b. Black and odorous wastewater _ Yes No N/A C. Poor suspended solids removed - Yes No N/A . d. Excessive buildup of solids in center well of circular clarifier Yes No N/A e. Weirs level Yes No N/A . f. Weir blockage Yes No N/A . g. Evidence of short circuiting Yes No N/A h. Lack of adequate scum removal Yes No N/A. i. Excessive floating ,sludge Yes No N/A • j. Broken sludge scraper. 16. Trickling Filter: - Yes No a. Trickling -filter ponding(indicating clogged media) Yes No. N/A b. Leak at center column of trickling filter's distribution arms Yes No N/A c. Uneven distribution of flow on trickling filter surface Yes No N/A d.. Uneven or discolored growth Yes No N/A e. Excessive sloughing, of `growth Yes No N/A f. Odor Yes No N/A. g:. ' Clogging of trickling filter's distribution arm orifices Yes No N/A h:Filter flies, worms, or snails. Page 2 Yes No Yes No N/A Yes No N/A 'Yes No N/A Yes . No N/A 17. Rotating Biological Contactors (RBC): a. Development, of white biomass on rotating' biological contactor media b. Excessive sloughing of growth c. Excessive breakage of rotating disks or shafts in RBC units d. Excessive breakage of paddles on brush aerators . e. Shaft, bearing, drive gear, or motor failure on disk or brush aerators. Page 3 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes . Yes Yes Yes Yes Yes N/A No Z4I N/A N/A io N/A N/A N/A No No N/A No N/A No N/A isra N/A N/A N/A a N/A No 09 N/A • No Ot No N/A /►n;* 0 ED N/A N/A 18. Activated Sludge Basins/Oxidation Ditches: Dead spots Failure of surface aerators Air rising in clumps Dark foam or bad color Thick billows of white, sudsy foam Air rising unevenly Excessive air leaks in compressed air piping. a. b. c. e. f. g• 19. Stabilization Ponds/Lagoons: a: Excessive weeds. including duckweed in stabilization ponds b. Dead fish or aquatic organisms c. Buildup of solids around influent pipe. , d. Excessive scum on surface. 20. 21. No ctL No N/A No N/A No N/A No :N/A No N/A No No No No. No No No No N/A N/A N/A N/A N/A N/A N/A 22. • Secondary Clarifier: . a. Excessive gas bubbles on surface b. Unlevel overflow weirs. c. Weir blockage d. Evidence of short circuiting e. Excessive buildup of solids in center well of circular clarifier f. Pin floc in overflow . g. Ineffective scum rake h. Floating sludge on surface i. Excessive high sludge blanket .• j. Clogged sludge withdrawal ports.on secondary clarifier. Filtration: a. Filter surface clogging . b. • Short filter run • c. Gravel displacement -of filter media d. Loss of filter media during backwashing e. Recycled filter backwash water in excess of 5 percent f. Formation of mudballs in filter media. Chlorination Unit: . a. Sludge buildup in contact chamber b. Gas bubbles c. Floating scum and/or solids • d.. Inadequate ventilation of chlorine feeding rooni,and storage area e. NIOSH-approved 30 minute air pack - f.. All standing chlorine cylinders chained in place g. All personnel trained in the use of chlorine h. Improper chlorine feed, storage, and reserve supply. Page 4 No N/A 23. Ultraviolet radiation disinfection present and in use. 24: Dechlorination: Yes No a. Improper storage of sulfur dioxide cylinders Yes No N/A b. Inadequate ventilation of sulfur dioxide feeding room Yes . No N/A c. Automatic sulfur dioxide feed or feedback control not operating properly. 25. Aerobic Digester: Yes j® N/A a. Excessive foaming in tank Yes fa N/A b. Noxious odor Yes ISM N/A • c. Mechanical aeration failure Yes at. N/A d. Clogging of diffusers. 26. Anaerobic Digester: a. Floating cover tilting b. Gas bumer inoperative c. Supernatant has a sour odor. Yes No 41/9 Yes No N/A Yes No N/A. Yes No lam' Yes No N/A Yes No N/A Yes No N/A Yes . No N/A la, No N/A Yes No N/A Yes No Yes No N/A Yes No N/A Yes No N/A Yes No Yes No N/A Yes No N/A 27. Sludge Drying and/or disposal:. a. Poor sludge distribution on drying beds b. Vegetation in drying beds c. Dry sludge remaining in drying beds d: Dry sludge stored on site e. Filtrate from sludge drying beds returned to front of plant f. 'Approved disposal site for the sludge g. Sludge land. applied. 28. Filter Press: • a. High level of solids in filtrate from filter presses.or vacuum filters b. Thin filtercake caused by poor' dewatering c. Sludge buildup on belts and/or rollers of filter press d. Excessive moisture in belt filter press sludge cake. . 29. Polishing Ponds or Tanks: a. Objectionable odor, excessive foam, floating solids, or oil sheens on water surface b.. Solids or scum accumulations in tank or at side of pond c. Evidence of bypassed polishing ponds ;or tanks because of low capacity. Page 5 30. Plant Effluent: Yes ED N/A a. Excessive suspended solids, turbidity, foam, grease, scum, color, and other macroscopic particulate matter present Yes 1`D N/A b. Potential toxicity (dead fish, dead plant at discharge) Yes I�o N/A c. Outfall discharge line easily accessible. 31. Flow Measurement: Yes CO N/A a. Improper placement of flow measurement device Yes Cbt N/A b. Flow totalizer not calibrated Yes CM N/A c. Buildup of solids in flume or weir Yes Q� N/A d. Broken or cracked flume or weir Yes No tg3 e. Improperly functioning magnetic flowmeter Yes No. VD f. Clogged or broken stilling wells Yes a .N/A g. Weir plate edge corroded or damaged Yes L® N/A h. System not capable of measuring maximum flow Yes No N/A i. Flow measurement error greater than +/- 10%. 32. Sampling: (Z3 No N/A a. Sampling and analysis completed on parameters specified by permit /e No N/A b. Samples refrigerated during.compositing 'e No N/A c. Composite sample temperatures maintained at less than or equal to 4 degrees Celsius during sampling e No N/A d. Contract laboratory used for sample analysis. RECORDKEEPING AND REPORTING No N/A 1. Records and reports maintained as required by permit. C No N/A 2. All required information available, complete, and current. es No N/A 3. Records maintained for 3.years and all sludge records maintained for 5 years. No N/A 4. Analytical results consistent with data reported on DMRs. 5. Sampling and analyses data adequate and include: 1 No N/A a. Dates, times, and location of sampling Nallo N/A b. Name of individual performing sampling. © No N/A c. Results of analyses and calibration No N/A d. Dates of analyses Ee No N/A e. Name of person performing analyses. 4 Page 6 No N/A No N/A (T) No N/A 6. Monitoring records adequate and include: a. Monitoring charts kept for 3 years b. Flowmeter calibration records kept for 3 years. 7. Laboratory equipment calibration and maintenance records adequate. 8. Plant records adequate and include: Yes N/A a. 0 & M Manual la) No N/A b. "As -built" engineering drawings Yes ED N/A c. Schedules and dates of equipment maintenance repairs Yes No (ig) d. Equipment data cards. 9. Permittee is meeting compliance schedule. Yes No No N/A 10. DMRs complete and include all NPDES permit required parameters.. (ga. No N/A 11. ORC visitation logs available and current. tr24 No N/A 12. ORC certified at a level equal to or greater than the classification of the wastewater facility. J' No N/A 13. Current copy of the complete NPDES permit,on site. No N/A 14. Facility,description verified as contained in NPDES permit. Revised 10/1/99 by Belinda Henson INSPECTION REPORT UPDATE OPTION:TRX: 5IF KEY: NC0081825INSCEI 010626 SYSMSG: *** DATA ADDED SUCCESSFULLY *** PERMIT--- NC0081825 REG/COUNTY-- 06 ANSON FACILITY-- ANSONVILLE, TOWN - WWTP LOC-- ANSONVILLE INS TYPE CEI NEXT PLANNED INSPECTION. INSPECTED BY: DATE: 010626 RD REPORT INSPECTION DMR RESPONSE RECEIVED DATE STATUS STATUS DUE DATE DATE 010703 C C COMMENTS: