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Home My WebLink AboutNC0073393_Inspection_20180829EPA United States Environmental Protection Agency 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 Type Inspector Fac Type 1 N 52 NC0073393 18/08/29 C S31112171819 20 21 66 Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved------------------- N67707172 73 74 75 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) Dana Hill WWTP 1010 Dana Rd Hendersonville NC 28792 Entry Time/Date Permit Effective Date Exit Time/Date Permit Expiration Date 10:00AM 18/08/29 16/02/01 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Danielle Ann Hunter/ORC/828-697-0063/ Other Facility Data 11:00AM 18/08/29 20/11/30 Name, Address of Responsible Official/Title/Phone and Fax Number Vito Montaperto,1010 Dana Rd Hendersonville NC 28792//828-692-8477/8286921759 Contacted No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenance Self-Monitoring Program Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters 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 Daniel J Boss ARO WQ//828-296-4658/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page#1 DocuSign Envelope ID: C36D71F6-1AF5-469E-8140-3943F1F09BBF 8/30/2018 8/30/2018 NPDES yr/mo/day 18/08/29 Inspection Type C3111218 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) I (Daniel Boss) conducted a Compliance Evaluation Inspection at the Dana Hill WWTP. I met with Danielle Hunter (ORC) and Juanita James (Backup ORC). Overall the plant appeared to be operating okay, but there were a few issues that should be addressed. The blower guards were not covering two of the running blowers. Ms. Hunter said that the blowers overheat when the covers are on them. Not having the guards covering the blowers is a safety hazard and needs to be corrected. The composite sampling needs to be flow proportional rather than time-based. One of the secondary clarifiers had a lot of pin floc and floating sludge. Ms. Hunter said that the skimmer for that particular clarifier can't be run for long without it causing solids to rise in the clarifier. The effluent flow meter was having issues with the LCD display. It was flashing through different screens and appeared to have a few glitches on the readout. There was no documentation for the last calibration of the flow meter. NC0073393 17 (Cont.) Page#2 DocuSign Envelope ID: C36D71F6-1AF5-469E-8140-3943F1F09BBF Permit:NC0073393 Inspection Date:08/29/2018 Owner - Facility: Inspection Type: Dana Hill WWTP Compliance Evaluation Operations & Maintenance Yes No NA NE 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 Yes No NA NE (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? The permit says that there is a post aeration tank, but no such tank exists.Comment: Pump Station - Influent Yes No NA NE 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 audible and visual alarm available and operational? One pump is out for repair.Comment: Bar Screens Yes No NA NE 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: Page#3 DocuSign Envelope ID: C36D71F6-1AF5-469E-8140-3943F1F09BBF Permit:NC0073393 Inspection Date:08/29/2018 Owner - Facility: Inspection Type: Dana Hill WWTP Compliance Evaluation Equalization Basins Yes No NA NE Is the basin aerated? Is the basin free of bypass lines or structures to the natural environment? Is the basin free of excessive grease? Are all pumps present? Are all pumps operable? Are float controls operable? Are audible and visual alarms operable? # Is basin size/volume adequate? Comment: Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Diffused 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/l) One of the aeration basins had about 30% foam covering the surface. The blowers for the aeration basins did not have the guards covering the belts and pulleys because it causes the blowers to overheat. The uncovered belts and pulleys are a safety hazard and need to be addressed. The basin DO values are typically 0.6, 1.6, and 4.0 mg/L according to Ms. Hunter. Comment: Secondary Clarifier Yes No NA NE 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? Page#4 DocuSign Envelope ID: C36D71F6-1AF5-469E-8140-3943F1F09BBF Permit:NC0073393 Inspection Date:08/29/2018 Owner - Facility: Inspection Type: Dana Hill WWTP Compliance Evaluation Secondary Clarifier Yes No NA NE Is the return rate acceptable (low turbulence)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately ¼ of the sidewall depth) The blankets were 1.5 ft or less in all 3 clarifiers. One clarifier did have a substantial amount of pin floc in it and lots of floating solids. Ms. Hunter said that was because she could only run that particular clarifier's skimmer for the time she was on site. Otherwise it would cause solids to rise in the clarifier. Comment: Disinfection-Tablet Yes No NA NE Are tablet chlorinators operational? Are the tablets the proper size and type? Number of tubes in use?2 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: De-chlorination Yes No NA NE Type of system ?Tablet 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?4 Comment: Aerobic Digester Yes No NA NE 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? Page#5 DocuSign Envelope ID: C36D71F6-1AF5-469E-8140-3943F1F09BBF Permit:NC0073393 Inspection Date:08/29/2018 Owner - Facility: Inspection Type: Dana Hill WWTP Compliance Evaluation Aerobic Digester Yes No NA NE Comment: Effluent Sampling Yes No NA NE 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)? Composite sampling is currently time based, but must be flow proportional. The tubing did not appear to be clean. Mrs. James says it is difficult to change the tubing for this sampler because the line is run underground. Comment: Flow Measurement - Effluent Yes No NA NE # 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? Mrs. James said that the meter had been calibrated last year, but there was no documentation of that calibration event at the plant. The meter readout was having issues during the inspection. The LCD display was flashing through different screens and seemed to be displaying glitches. Comment: Effluent Pipe Yes No NA NE 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? The right of way was not cleared all the way to the effluent pipe, but it was close enough that I could see the discharge. Comment: Page#6 DocuSign Envelope ID: C36D71F6-1AF5-469E-8140-3943F1F09BBF