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Home My WebLink AboutNC0062855_WWTP Inspection_20150423NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor April 23, 2015 Town of Robbins Jeffery A.Sheffield, Town Manager P. O. Box 296 Robbins, NC 27325 SUBJECT: 3/24/2015 Compliance Evaluation Inspection Town of Robbins Robbins WWTP Permit No: NC0062855 Moore County Dear Mr. Sheffield: Donald R. van der Vaart Secretary Enclosed please find a copy of the Bioassay Compliance Evaluation Inspection form from the inspection conducted, on 3/24/2015 and 3/26/2015: The. Bioassay Compliance Evaluation Inspection was conducted by Mark Brantley, Environmental Senior Specialist, of the Fayetteville Regional Office. The cooperation and assistance by Jeremy Monroe, facility operator, was greatly appreciated. The facility was found to be in. Compliance with permit NC0062855. As a reminder, preservation of the Waters of the State can only be achieved through consistent NPDES Permit compliance. Comments > A Whole Effluent Toxicity test was collected at Outfall 001 from the Robbins WWTP's 24-hour composite equipment on March 24,.2015 and March 26, 2015 for use in a chronic Ceriodaphnia dubia pass/fail toxicity test. These samples were sent to the Division of Water Resources (AT) Laboratory (located on Reedy Creek Road. in Raleigh). The results of this test have not been released at this time. Results will be forwarded to the Town at a later time. > The Division of Water Resources would like to commend the Town for removing the trees that could potentially have caused structural damage to the facility and operational problems with equipment. This office understands that the Town is planning to use the water reuse system since leaf material and pine straw in the system will no longer be a problem.. > The grit removal system is currently offline due to the high cost to rehab the system: The introduction of sand and. grit into the waste treatment system can cause unnecessary wear and tear on pumps which can cause costly repairs. If enough grit and sand is allowed to enter the system then the amount of available treatment volume can be reduced. This item was also mentioned in the inspection letter dated August 15, 2014. Fayetteville Regional Office 225 Green Street, Suite 714, Fayetteville, North Carolina 28301-5095 Main Phone: 910-433-3300 1 Internet: http://www.ncdenr.gov An Equal Opportunity \ Affirmative Action Employer— Made in part by Recycled Paper Mr. Sheffield Page 2 April 22, 2015 > The aeration system for the large digester has been out of service for some time. This issue has been mentioned in previous inspection letters dated May 25, 2012, January 7, 2013, and August 15, 2015. Currently the little digester is capable of handling the WWTP sludge. > There are 4 blower units for treatment trains Land 2. At the time of the inspection 3 of the blowers were operational. The fourth blower has been out service for an extended period of time. > Maintenance logs and the ORC log were up to date at the time of the inspection. > Laboratory records were compared to the monthly report for November 2014 andno transcription errors were found at that time. . > The decanting valves on the little digester are becoming difficult to operate. Please repair or replace these valves as necessary. > Currently treatment train #1 is being used as an equalization basin for the caustic liquid that leaked from the storage tank. Facility staff is slowing adding this material into the active treatment unit to dispose of the material and avoid a plant upset. 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. Sincerely, Mark Brantley Environmental Senior Specialist Division of Water Resources Water Quality Regional Operations Section cc: Tommy F Gibbons, ORC Central Files Fa ye Files; United States Environrnental Protection Agency EPA 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 u 2 I5 J 3 I NC0062855 . I11 .'12 I 15/03/24 117 Type 18 [2I Lill Inspector Fac Type 19 I G I 2011 21 iliiiiiiili1 i11 iiiiilii iIiiiil ill iiiI r6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA 67 I I 701� 1 71 1n 1 72 1 rJ .1 LJ LJ Reserved 731 I 174 75I 1 . - __ _ :. I' _i -. i, i. I180 . Section B: FaciliittyJData Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) ' Robbins WWTP Sewer Plant Rd Robbins NC 27325 Entry Time/Date 10:30AM • 15/03/24 Permit Effective Date 13/04/01 Exit Time/Date 12:45PM. 15/03/24 Permit Expiration Date 16/03/31 Name(s) of Onsite Representative(s)Ttles(s)/Phone and Fax Number(s) /// Tommy F Gibbons/ORC/910-948-3063/ Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Rodney L IGser, //910-948-3063/ ' 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 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 MarkBrantley �% FRO WQ//910-433-3300 Ext.727/' s Signature of Management Q A Reviewer , Agency/Office/Phone and Fax Numbers Date Ar lii F} nif 916 RO WQ//910-433-3300 Ext.72E _ ? EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 1 NPDES NC0062855 111 121 yr/mo/day 15/03/24 117 Inspection Type 181Li (Cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Comments ❑ A Whole Effluent Toxicity test was collected at Outfall 001 from the Robbins VVWTP's 24-hour composite equipment on March 24, 2015 and March 26, 2015 for use in a chronic Ceriodaphnia dubia pass/fail toxicity test. These samples were sent to the Division of Water Resources (AT) Laboratory (located on Reedy Creek Road in Raleigh). The results of this test have not been released at this time. Results will be forwarded to the Town at a later time. ❑ The Division of Water Resources would like to commend the Town for removing the trees that could potentially have caused structural damage to the facility and operational problems with equipment. This office understands that the Town is planning to use the water reuse system since leaf material and pine straw in the system will no longer be a problem. O The grit removal system is currently offline due to the high cost to rehab the system. The introduction of sand and grit into the waste treatment system can cause unnecessary wear and tear on pumps which can cause costly repairs. If enough grit and sand is allowed to enter the system then the amount of available treatment volume can be reduced. This item was also mentioned in in the inspection letter dated August 15, 2014. O The aeration system for the large digester has been out of service for some time. This issue has been mentioned in previous inspection letters dated May 25, 2012, January 7, 2013, and August 15, 2015. Currently the little digester is capable of handling the WWTP sludge. ❑ There are 4 blower units for treatment trains 1 and 2. At the time of the inspection 3 of the blowers were operational.. The fourth blower has been out service for an extended period of time. ❑ Maintenance logs and the ORC log were up to date at the time of the inspection. ❑ Laboratory records were compared to the monthly report for November 2014 and no transcription were found at that time. ❑ The decanting valves on the little digester are becoming difficult to operate. Please repair or replace these valves as necessary. O Currently treatment train #1 is being used an equalization basin for the caustic liquid that leaked from the storage tank. Facility staff is slowing adding this material into the active treatment unit to dispose of the material and avoid a plant upset. Page# 2 Permit: NC0062855 Owner - Facility: Robbins WVVTP Inspection Date: 03/24/2015 Inspection Type: Compliance Evaluation Operations &Maintenance Is the plant generally clean with acceptable housekeeping? Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: Permit (If the present permit expires in 6 months or less). Has the permittee submitted a new application? Is the facility as described in the permit? # Are there any special conditions for the permit? Is access to the plant site restricted to the general public? Is the inspector granted access to all areas for inspection? Comment: Record Keeping Are records kept and maintained as required by the permit? Is all required information readily available, complete and current? Are all records maintained for 3 years (lab. reg. required 5 years)? Are analytical results consistent with data reported on DMRs? 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? Has the facility submitted Its annual compliance report to users and DWQ? (If the facility is = or> 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift?: Is the ORC visitation log available and current? Is the ORC •certified at grade equal to or higher than the facility classification? Is the backup operator certified at one grade less or greater than the facility classification? Is a copy of the current NPDES permit available on site? Yes. No NA NE 11`❑ ❑0 1 ❑ ❑ ❑ Yes No NA NE ❑ ❑•❑ ❑ ❑ I ❑ ▪ ❑ ❑ ❑ Yes No NA NE 11 ❑ ❑ ❑ 11❑ ❑ ❑ IN 0 ❑'❑- III 0 ❑ ❑ .:❑ 0 0 0❑. 0 II ❑ ❑ ❑ ❑ ❑ 1 ❑ M ❑ ❑ I1z ❑ ❑ ❑ 11000 Page# 3 Permit: NC0062855 Owner - Facility: 'Robbins VWVTP Inspection Date: 03/24/2015 Inspection Type: Compliance Evaluation Record Keeping Facility has copy of previous year's Annual Report on file for review? 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: 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: Chemical Feed Is containment adequate? Is storage adequate? Are backup pumps available? Is the site free of excessive leaking? Comment: Pump Station - Influent Is the pump wet well free of bypass lines or structures? Is the wet well free of excessive grease? Are all pumps present? Are all pumps operable? Are float controls operable? Is SCADA telemetry available and operational? Is audibleandvisual alarm available and operational? Yes No NA . NE .▪ ❑ ❑ ❑ Yes No NA NE. ' DOD .❑ ❑ ❑ • ❑ 0 0 ❑ ❑ II ❑ Yes No NA NE • ❑ ❑ ❑ ‚ DOD ❑ ❑'❑ ❑ ❑ ❑ MI ❑ ❑ ❑'. Yes No NA NE 11❑ ❑ ❑ III❑ ❑ ❑ • ❑ ❑ ❑ II 0 ❑ ❑ Yes No NA NE ❑ ❑ ❑ IN ❑ ❑ ❑ ' ODD' • .'❑. ❑ ❑ • o ❑ i .❑ ❑:❑ ❑ 0 ❑! Page# 4 Permit: NC0062855 Owner - Facility: Robbins VWVfP Inspection Date: 03/24/2015 Inspection Type: Compliance Evaluation Pump Station - Influent Yes No NA NE Comment: Pump Station --Effluent Is the pump wet well free of bypass lines or structures? Are all pumps present? Are all pumps operable? Are float controls operable? Is SCADA telemetry available and operational? Is audible and visual alarm available and operational? Comment: Bar Screens Type of bar screen a.Manual b.Mechanical_ Are the bars adequately screening debris? Is the screen free of -excessive debris? Is disposal of screening in compliance? Is the unit in good condition? Comment: 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. • .❑ ❑.❑ ▪ ❑ ❑ ❑ NI ❑ ❑ ❑ II• ❑ ❑ ❑ • ❑ ❑ • ❑ ❑ ❑ • Yes No NA NE • ❑ ❑ ❑ IN ❑.❑ 0 In.❑ 0 ❑ II El .❑ ❑ Yes No NA NE - • ❑ ❑ ❑ • ❑ ❑ ❑ 11 :❑ ❑ .❑ 11 ❑ .❑ ❑ .. IN .:0 ❑ ❑ ❑.❑0. ▪ Cl ❑ ❑ • ❑ ❑ 0 11❑ ❑ ❑ 11 ❑ ❑ ❑ Page# 5 Permit: NC0062855 Inspection Date: 03/24/2015 Owner - Facility: Robbins WWfP Inspection Type: Compliance Evaluation Secondary Clarifier Yes No NA NE 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) Comment: 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: 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? Yes No NA NE Ext. Air Diffused ❑ ❑ ❑ ❑ ❑ ® ❑ ® ❑ ❑ ❑ ® ❑ ❑ ❑ ® ❑ ❑ ❑ ® ❑ ❑ ❑ ® ❑ ❑ ❑ Yes No NA NE 1 ❑ ❑ ❑ ® ❑ ❑ ❑ ® ❑ ❑ ❑ O 00111 ® ❑ ❑ ❑ ❑ ❑ ❑ II 1 ❑ ❑ ❑ Yes No NA NE Liquid ® ❑ ❑ ❑ MI ❑ ❑ ❑ ® ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ ® ❑ Page# 6 Permit: NC0062855 Inspection Date: 03/24/2015 Owner - Facility: Robbins WJVfP Inspection Type: Compliance Evaluation De -chlorination Yes No NA NE Comment: Disinfection -Liquid Is there adequate reserve supply of disinfectant? (Sodium Hypochlorite) Is pump feed system operational? Is bulk storage tank containment area adequate? (free of leaks/open drains) 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? 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: Upstream / Downstream Sampling Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? Yes No NA NE MOOD - DOD MOOD • ❑ ❑ ❑ ' DOD MOOD Yes No NA NE O 0110 MOOD - DOD ■ ❑ ❑ ❑ MOOD • ❑• ❑ ❑ Yes No NA NE ▪ ❑ ❑ ❑ 1. ❑ ❑ ❑ ❑ ❑ ❑• ▪ ❑ ❑ ❑ MOOD MOOD Yes No NA NE ■ ❑ ❑ ❑ Page# 7 ponnu mu006285Owner ' nnbbmovm^VTp Inspection Date: noxmuo o Inspection Type: Compliance Evaluation Upstream I Downstream Samplinq Yes No -NA NE Comment: