The URL can be used to link to this page

Home My WebLink AboutNC0021504_NPDES Permit Renewal_20090109e W AT 9QG r n William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality January 9, 2009 MEMORANDUM Michael F. Easley, Governor To: Jacquelyn Nowell Environmental Senior Specialist Western NPDES Section Through: Belinda Henson, Water Quality Regional Supervisor 44140 (A4144,-ra Fayetteville Regional Office From: Mark Brantley, Environmental Chemist Fayetteville Regional Office r' SUBJECT: Minor NPDES Permit Renewal Town of Biscoe Biscoe WWTP NPDES Permit No. NC 0021504 Montgomery County Please find below, regional comments for the subject minor pe> init renewal. Applicant is not requesting modification of the facility or increasing flow at this time. A rating sheet is not attached as no modifications were made to this facility during the previous permit cycle. A review of compliance data did not reveal any significant or repetitive violations. Based on the last NPDES Compliance Inspection, there are no outstanding repairs or modifications of the treatment works necessary at this time. No special conditions, limitations, or monitoring is suggested at this time. Based on the above infoiniation, the Fayetteville Regional Office recommends reissuance in keeping with the current basin wide strategy. Cc: Central Files :OdFile�; One NorthCarolina A)atiim/l f North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone (919) 733-7015 Internet: www.ncwaterquality.org Location: 512 N. Salisbury St. Raleigh, NC 27604 Fax (919) 733-2496 An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper Customer Service 1-877-623-6748 United States Environmental Protection Agency E P n Washington, D.C. 20460 Water Compliance Inspection Report . Form Approved. 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 1 I NI 2 1 51 31 NC0021504 1 11 121 08/12/17 1 17 Type Inspector Fac Type 181 CI 191 SI 201 1 11111111 1111 11166 Remarks 211111 1111 1111 1 1 1 1 ] 1 1 1 1111 III 11111 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved 671 1 69 701 31 711 NI 721 N 1 731 1 1 74 751 1 1 1 1 1 1 1 80 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) Biscoe WWTP Off NCSR 1556 Biscoe NC 27209 Entry Time/Date 10:00 AM 08/12/17 Permit Effective Date 05/12/01 Exit Time/Date 12:10 PM 08/12/17 Permit Expiration Date 09/06/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Sammy Ray Stewart/ORC/910-428-4112/ Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted James F Blake,110 W Main St Biscoe NC 27209//910-428-4112/ 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 Mark BrantleyFRO WQ//910-433-3300 Ext.727/ _ _O /d�'' - �401,-4---- Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date Belinda S Henson ifl4o.1 FRO WQ//910-433-3300 Ext.726/ 1 -- CI —09 EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 31 NPDES NC0021504 111 121 yr/mo/day 08/12/17 117 Inspection Type 18ICI (cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Comments • Facility was clean and neat at the time of the inspection. Records and logbooks were reviewed and appeared to be well kept. The Division of Water Quality would like to make the following suggestions in order to maintain or improve the operation at the WWTP: 1. Please consider installing an automatic step -bar screen. This type of screen can remove smaller pieces of debris better than the current bar screen. This would further improve water quality by preventing pieces of plastic, rags, bubble gum wrappers, and associated debris from passing through the WWTP and being discharged into the receiving stream. By removing these items at the headworks of the plant it should prevent the pumps from becoming clogged with debris. Another advantage of this system is that it cleans itself as needed versus the current system of -hand cleaning when an operator is on shift. 2. Another item the town needs to consider is the installation of a second clarifier. The current clarifier is performing its job, however, it is aging and will need some maintenance work done in the future. It would benefit the town to a have a second clarifier in operation to minimize any disruptions in the WWTP and possibly prevent NPDES limit violations. 3. The drying bed retaining wall is starting to become brittle and crack due to its age and normal wear and tear. Please consider repairing this wall in the near future to possibly avoid more costly repairs at a later date. If this wall were to fail during a sludge application event it would allow sludge to spill out onto the ground possibly making its way to water of the state causing an illegal discharge. Repair costs and clean up cost to the spill would greatly out weigh the cost of a preventive maintenance job. Please refer to the enclosed inspection report for additional observations and comments. If you or your staff have any questions, please call me at 910-433-3327. Page # 2 Permit: NC0021504 Owner - Facility: Biscoe WWTP Inspection Date: 12/17/2008 Inspection Type: Compliance Evaluation 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 ia Judge, and other that are applicable? Comment: Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new application? ® n ❑ ❑ Is the facility as described in the permit? • ❑ El ❑ # Are there any special conditions for the permit? n n p n Is access to the plant site restricted to the general public? ■ n ❑ n Is the inspector granted access to all areas for inspection? ■ ❑ ❑ n Comment: Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? ■ n 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 .n Are analytical results consistent with data reported on DMRs? ■ n n n Is the chain -of -custody complete? ■ ❑ ❑ ❑ 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 ❑ Has the facility submitted its annual compliance report to users and DWQ? • 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 ❑ ❑ Is the backup operator certified at one grade less or greater than the facility classification? • n n 0 Is a copy of the current NPDES permit available on site? ■ n ❑ ❑ Page # 3 Permit: NC0021504 Owner - Facility: Biscoe WWTP Inspection Date: 12/17/2008 Inspection Type: Compliance Evaluation Record Keeping Facility has copy of previous year's Annual Report on file for review? Comment: 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? If effluent (diffuser pipes are required) are they operating properly? Comment: 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: Drying Beds Is there adequate drying bed space? Is the sludge distribution on drying beds appropriate? Are the drying beds free of vegetation? # Is the site free of dry sludge remaining in beds? Is the site free of stockpiled sludge? Is the filtrate from sludge drying beds returned to the front of the plant? # Is the sludge disposed of through county landfill? # Is the sludge land applied? (Vacuum filters) Is polymer mixing adequate? Comment: The retaining wall around the drying beds has become brittle and has started cracking in spots. No leaks at the time of the inspection. Bar Screens Type of bar screen a.Manuai b.Mechanical Are the bars adequately screening debris? Yes No NA NE ■ nnn Yes No NA NE ■ nnn ■ n n n n n■n Yes No NA NE ■ nnn ■ nnn• ■ nnn n n■n Yes No NA NE ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn n n®n n nmin Yes No NA NE ■ n ■ nnn Page # 4 Permit: NC0021504 Owner - Facility: Biscoe WWTP Inspection Date: 12/17/2008 Inspection Type: Compliance Evaluation Bar Screens Is the screen free of excessive debris? Is disposal of screening in compliance? Is the unit in good condition? Comment: The manual bar screen is removing large debris from the waste stream adequately however the WWTP would benefit greatly from an automatic barscreen. The automatic screens would be more efficient because they can remove smaller particles from the waste stream 24 hrs a day where as a manual screen is only cleaned a few times a day by hand. 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'/4 of the sidewall depth) Comment: 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/I) Yes No NA NE ■ nnn ■ nnn ■nnn Yes No NA NE ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn Yes No NA NE Ext. Air Surface ■ nnn ■ nnn nn®n ■ nnn ■ nnn ■ nnn ■ nnn Page # 5 Permit: NC0021504 Owner - Facility: Biscoe WWTP Inspection Date: 12/17/2008 Inspection Type: Compliance Evaluation Aeration Basins Comment: Disinfection -Gas . Are cylinders secured adequately? Are cylinders protected from direct sunlight? Is there adequate reserve supply of disinfectant? Is the level of chlorine residual acceptable? Is the contact chamber free of growth, or sludge buildup? Is there chlorine residual prior to de -chlorination? Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? If yes, then is there a Risk Management Plan on site? If yes, then what is the EPA twelve digit ID Number? (1000- - ) If yes, then when was the RMP last updated? Comment: De -chlorination Type of system ? Is the feed ratio proportional to chlorine amount (1 to 1)? Is storage appropriate for cylinders? # Is de -chlorination substance stored away from chlorine containers? Comment: •Are the tablets the proper size and type? Are tablet de -chlorinators operational? Number of tubes in use? Comment: Pumps-RAS-WAS Are pumps in place? Are pumps operational? Are there adequate spare parts and supplies on site? Comment: Laboratory Are field parameters performed by certified personnel or laboratory? Yes No NA NE Yes No NA NE ■ nnn ■ nnn ■ nnn minnn ■ nnn ■ nnn nn■n nnon Yes No NA NE Gas ■ nnn min nn ■ nnn nn■n El gi Yes No NA NE ■ nnn ■ nnn nnn■. Yes No NA NE ■ nnn Page # 6 Permit: NC0021504 Owner - Facility: Biscoe WWTP - Inspection Date: 12/17/2008 Inspection Type: Compliance Evaluation 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: 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: Yes No NA NE ■ nnn ■ nnn nnn■ nnon DD•O Yes No NA NE nn■n ■ nnn ■ .nnn ■ nnn ■ nnn ■ nnn Yes No NA NE nn•n ■ nnn ■ nnn ■ nnn ■ nnn ■ nnn Page # 7