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HomeMy WebLinkAboutNC0072877_Inspection_20000214.•i.41,�IL_Lt aI(Pf°0 NORTH CAROLINA DEPARTMENT OF FA +. ENVIRONMENT AND NATURAL RESOURCES` FAYETTEVILLE REGIONAL OFFICE February 14, 2000 The Honorable William Wilson Mayor, Town of Newton Grove PO Box 4 Newton Grove, NC 28366 SUBJECT: Compliance Evaluation Inspection Town of Newton Grove Wastewater Treatment Plant NPDES Permit No. NC0072877 Sampson County Dear Mr. Wilson: Enclosed is a copy of the Compliance Evaluation Inspection conducted February 8, 2000. 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 inspection 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 do not hesitate to contact me at 910-486-1541. Sincerely, Ai Belinda S. Henson Environmental Chemist /bsh Enclosures 225 GREEN STREET, SUITE 714, FAYETTEVILLE, NORTH CAROLINA 28301-5043 PHONE 910-486-1541 FAX 910-486-0707 AN EQUAL OPPORTUNITY /AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/1 O% POST -CONSUMER PAPER NPDES COMPLIANCE INSPECTION REPORT North Carolina Division of Water Quality Fayetteville Regional Office Section A National Data System Coding Transaction Code: N NPDES NO. NC0072877 Date: 000208 Inspection Type: C Inspector: S Facility Type: 1 Reserved: Facility Evaluation Rating: 4 BI: N QA: N Reserved. Section B: Facility Data Name and Location of Facility Inspected: Town of Newton Grove WWTP Entry Time: 9:35am Permit Effective Date: 960901 Exit Time/Date: 12:30pm/000208 Permit Expiration Date: 010731 Name(s), Title(s) of On -Site Representative(s): Jim Ballance (Certified Grade III) - "ORC" Phone Number(s): (910)594-0827 Name, Title and Address of Responsible Official Mr. William Wilson, Mayor PO Box 4 Newton Grove, NC 28366 Contacted: yes Section C: Areas Evaluated During Inspection S = Satisfactory, M = Marginal, U = Unsatisfactory, N = Not Evaluated, N/A = Not Applicable Permit: S Records/Reports: S Facility Site Review: S Flow Measurement: S Laboratory:,. S. Effluent/Receiving Waters: S Pretreatment: N/A Compliance Schedule: N/A Self -Monitoring Program: S Operation &:Maintenance: S Sludge Disposal: S Other: Section D. Summary of Findings/Comments: 1. The manual Bar Screen was operational. All screenings are disposed of through the county landfill. 2. The Equalization Basin assists in stabilization of wastewater before it flows to the oxidation ditch. Return sludge from the clarifier is added to the basin. 3. The Oxidation Ditch appeared to be adequately treating the wastewater. 4. The Clarifier appeared to have some pin floc not excessiveTin the effluent as it flowed over the weirs. The sludge depth appeared to be approximately three (3) feet with a tank depth of ten (10) feet. 5. The Tertiary Filters were observed to be operational with some grease balls floating on the surface. The grease balls are skimmed from the water surface each day and properly disposed of. 6. Ultraviolet light is used as disinfection. Ultraviolet light lamps are cleaned every 2-3 weeks. An intensity lamp indicator revealed a reading of three(3) with a range, of 0-7. Zero (0) means no disinfection occurring. 7. The effluent appeared to be free of solids. 8. The effluent outfall was not easily accessible due to falling of trees from previous storms. The "ORC" commented that this area would be cleared in the future for accessibility. 9. The Aerobic Digester was observed to be operational. A quantity of up to 10,000 gallons of sludge is wasted weekly. Sludge is land applied monthly to permitted land. An amount of 7 % acres surrounding the wastewater facility is owned by the town and this area is used for sludge disposal. This facility has a total of 44 'Y2 acres permitted for land application of sludge. The "ORC" is responsible for implementing the land application permit. 10. The effluent flow meter was calibrated September 22, 1999 by Instrumentation Services, Inc. It is advisable that the flow meter calibration document contain the % error before and after calibration in the future by the technician. 11. The following NPDES permit required parameters are analyzed on site by facility staff: pH, Temperature, Dissolved Oxygen. All other required parameters are analyzed by a contract laboratory "Vann Laboratories." 12. A compliance evaluation analysis report for the period January through December 1999 did not reveal any monthly violations. A weekly violation for Fecal Coliform was noted for the month of February 1999 and a NOV was sent to the facility. 13. Laboratory records were reviewed for the months January through June 1999 and compared to Discharge Monitoring Records. Data appeared to be correctly reported. 14. The NPDES permit was available upon request. -continued- 15. 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 commenced or data shall be entered onto the monitoring report form on 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, 2000 at 9:OOAM and the sample is withdrawn from the composite sampler on Wednesday, February 9, 2000 at 9:OOAM; the day with the greater number of hours in it is Tuesday, February 8, 2000. B. If the composite sample is started on Tuesday, February 8, 2000 at 6:OOPM and the sample is withdrawn from the composite sampler on Wednesday, February 9, 2000 at 6:OOPM; the day with the greater number of hours in it is Wednesday, February 9, 2000. Name and Signature of Inspector Agency/Office/Telephone Date Belinda S. Henson 4-''° DENR/Fayetteville/(910)486-1541 ' 1 - b 6 Name and Signature of Reviewer Paul E. Rawls Action Taken Agency/Office/Telephone Date DENR/Fayetteville/(910)48 6-1541 Regulatory Office Use Only Compliance Status _Noncompliance _Compliance 0 ,I Date Section D: Summary of Findings/Comments Brief Facility Description: Town of Newton Grove operates a 0.200 MGD WWTP consisting of a manual bar screen, equalization basin, circular one rotor aerated oxidation ditch, twenty foot diameter clarifier, sludge pump station, tertiary filter consisting of eighteen individual cells, automatic backwash traveling bridge, ultraviolet disinfection, cascade post aeration, ultrasonic open Channel flow meter with totalizer and an aerobic sludge digester FACILITY SITE REVIEW es No N/A 1. Treatment units properly operated and maintained. No N/A 2. Standby power or other equivalent provision provided. No 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 ®e No N/A b. State approval for sludge disposal received. 43iM ED No N/A 5. All treatment units other than backup units in service. No N/A 6. Sufficient sludge disposed of to maintain treatment process equilibrium. ED No N/A 7. Adequate number of qualified operators on staff. No N/A 8. Established procedures available for training new employees. ED No N/A 9. Adequate spare parts and supplies inventory maintained. Yes CID N/A 10. a. Hydraulic overflows and/or organic overloads experienced Yes No b. Untreated bypass discharge occurs during power failure Yes No 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. es No N/A 12. Plant is generally clean, free from open trash areas. No N/A Yes No Yes N/A %` No N/A Yes No (STA) Yes No N/A Yes No N/A Yes No Yes No N/A Yes No N/A Yes No N/A Yes No N/A Yes No N/A Yes No N/A Yes No N/A Yes No N/A Yes No N/A Yes No Yes No N/A Yes No N/A Yes No N/A Yes No N/A Yes No N/A Yes No N/A Yes No N/A Yes No G.L. Yes No N/A Yes No N/A Yes No N/A Yes No N/A Page 2 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: a. Excessive gas bubbles b. Black and odorous wastewater c. Poor suspended solids removed d. Excessive buildup of solids in center well of circular clarifier e. Weirs level f. Weir blockage g. Evidence of short circuiting h. Lack of adequate scum removal I. Excessive floating sludge j. Broken sludge scraper. 16. Trickling Filter: Trickling filter ponding(indicating clogged media) Leak at center column of trickling filter's distribution arms Uneven distribution of flow on trickling filter surface Uneven or discolored growth Excessive sloughing of growth Odor Clogging of trickling filter's distribution arm orifices Filter flies, worms, or snails. a. b. c. d. e. f. g• h. 17. Rotating Biological Contactors (RBC): a. Development of white biomass on rotating biological contactor media Excessive sloughing of growth Excessive breakage of rotating disks or shafts in RBC units Excessive breakage of paddles on brush aerators Shaft, bearing, drive gear, or motor failure on disk or brush aerators. b. c. d. e. Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Qop N/A No T/A N/A N/A (Igjb N/A No No No �' No N/A No N/A No N/A Yes ® N/A Yes ®o N/A Yes N/A Yes N/A Yes N/A Yes No N/A Yes (too) N/A Yes N/A Yes ) N/A Yes eci2 N/A Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes ® N/A N/A GEO N/A N/A N/A N/A No No No No No No No No N/A N/A N/A N/A N/A N/A N/A Page 3 18. Activated Sludge Basins/OxidationDitches: a. Dead spots b. Failure of surface aerators c. Air rising in clumps d. Dark foam or bad color e. Thick billows of white, sudsy foam f. Air rising unevenly g. Excessive air leaks in compressed air piping. 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. Secondary Clarifier: a. Excessive gas bubbles on surface b. Unlevel overflow weirs Weir blockage Evidence of short circuiting Excessive buildup of solids in center well of circular clarifier eXct.c. V Z c. d. e. f. g• h. I. J. Pin floc in overflow SC z vtCr Ineffective scum rake Floating sludge on surface Excessive high sludge blanket Clogged sludge withdrawal ports on secondary clarifier. 21. Filtration: Filter surface clogging Short filter run Gravel displacement of filter media Loss of filter media during backwashing Recycled filter backwash water in excess of 5 percent Formation of mudballs in filter media. a. b. c. d. e. f. 22. Chlorination Unit: a. Sludge buildup in contact chamber b. Gas bubbles c. Floating scum and/or solids d. Inadequate ventilation of chlorine feeding room 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. and storage area Yes) No N/A 23. Ultraviolet radiation disinfection present and in use. Yes No NI Yes No N/A Yes No N/A Yes Yes Yes Yes Yes Yes Yes N/A N/A N/A No 40> No(/) No N/A No N/A Yes No VA-) Yes No (j? Yes No (-,N---/A..) Yes No '.NIA Yes No (L/2 Cress) No N/A (Yes No N/A Yes No Yes No N/A Yes No N/A Yes No N/A Yes No (N/A.) Yes No N/A Yes No N/A Page 4 24. Dechlorination: a. Improper storage of sulfur dioxide cylinders b. Inadequate ventilation of sulfur dioxide feeding room c. Automatic sulfur dioxide feed or feedback control not operating properly. 25. Aerobic Digester: a. Excessive foaming in tank b. Noxious odor c. Mechanical aeration failure d. Clogging of diffusers. 26. Anaerobic Digester: a. Floating cover tilting b. Gas burner inoperative c. . Supernatant has a sour odor. 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 filter cake 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. Yes N/A Yes (lD N/A Yes �o N/A Yes to) N/A Yes N/A Yes ® N/A Yes (SZO N/A Yes N/A Yes No Ca) Yes(M)N/A Yes N/A Yes No N/A Page 5 30. Plant Effluent: a. Excessive suspended solids, turbidity, foam, grease, scum, color, and other macroscopic particulate matter present b. Potential toxicity (dead fish, dead plant at discharge) c. Outfall discharge line easily accessible. 31. Flow Measurement: a. Improper placement of flow measurement device b. Flow totalizer not calibrated c. Buildup of solids in flume or weir d. Broken or cracked flume or weir e. Improperly functioning magnetic flowmeter f. Clogged or broken stilling wells g. Weir plate edge corroded or damaged h. System not capable of measuring maximum flow I. Flow measurement error greater than +/- 10%. 32. Sampling: No N/A a. Sampling and analysis completed on parameters specified by permit e_s'No N/A b. Samples refrigerated during compositing =rc' ) No N/A c. Composite sample temperatures maintained at less than or equal to 4 degrees Celsius during sampling d. Contract laboratory used for sample analysis. No N/A (~Yes No N/A es `y No N/A No N/A Yes No N/A No N/A es No N/A �'�'es) No N/A es' No N/A CYZ:§) No N/A 1. RECORDKEEPING AND REPORTING Records and reports maintained as required by permit. 2. All required information available, complete, and current. 3. Records maintained for 3 years and all sludge records maintained for 5 years. 4. Analytical results consistent with data reported on DMRs. 5. Sampling and analyses data adequate and include: a. Dates, times, and location of sampling b. Name of individual performing sampling c. Results of analyses and calibration d. Dates of analyses e. Name of person performing analyses. Yes No N/A 'es) No N/A No N/A Yes :No N/A Yes No N/A CesJ'No N/A Yes No Yes No (- TsD No N/A Yes No N/A CfesJNo N/A hes `'No N/A es No N/A Revised 10/1/99 by Belinda Henson Page 6 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: a. 0 & M Manual b. "As -built" engineering drawings c. Schedules and dates of equipment maintenance repairs d. Equipment data cards. 9. Permittee is meeting compliance schedule. 10. DMRs complete and include all NPDES permit required parameters. 11. ORC visitation logs available and current. 12. ORC certified at a level equal to or greater than the classification of the wastewater facility. 13. Current copy of the complete NPDES permit on site. 14. Facility description verified as contained in NPDES permit. INSPECTION REPORT UPDATE OPTION: TRX: 5IF KEY: NC0072877INSCEI 000208 SYSMSG: *** DATA ADDED SUCCESSFULLY *** PERMIT--- NC0072877 REG/COUNTY-- 06 SAMPSON FACILITY-- NEWTON GROVE, TOWN OF - WWTP LOC-- NEWTON GROVE INS TYPE CEI NEXT PLANNED INSPECTION INSPECTED BY: DATE: 000208 HSB REPORT INSPECTION DMR RESPONSE RECEIVED DATE STATUS STATUS DUE DATE DATE 000214 C C COMMENTS: