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Home My WebLink AboutNC0073741_Compliance Evaluation Inspection_20240212DocuSign Envelope ID: 03DD845E-A4A2-4656-9A7D-F3D556D746E1 ROY COOPER Co,ernor ELIZABETH S. BISER Secretary RICHARD E. ROGERS, JR. Director o-`"` sreve4 l��QWM'�a NORTH CAROLINA Environmental Quality SENT VIA ELECTRONIC MAIL ONL Y.• NO HARD COPY WILL BE MAILED. February 12, 2024 Aubrey Deaver A&D Water Service Inc Email: admaint@comporium.net SUBJECT: Compliance Inspection Report Mountain Valley WWTP NPDES WW Permit No. NCO073741 Henderson County Dear Permittee: The North Carolina Division of Water Resources conducted an inspection of the Mountain Valley WWTP on 1/25/2024. This inspection was conducted to verify that the facility is operating in compliance with the conditions and limitations specified in NPDES WW Permit No. NC0073741. The findings and comments noted during this inspection are provided in the enclosed copy of the inspection report entitled "Compliance Inspection Report". There were no significant issues or findings noted during the inspection and therefore, a response to this inspection report is not required. If you should have any questions, please do not hesitate to contact Rachel Rose with the Water Quality Regional Operations Section in the Asheville Regional Office at 828-296-4500 or via email at rachel.rose@deq.nc.gov. ATTACHMENTS: Inspection Report Ec: Laserfiche Sincerely, Ev DocuSigned by: SACE19D3940C494... Rachel Rose, Environmental Specialist Water Quality Regional Operations Section Asheville Regional Office Division of Water Resources, NCDEQ D_EQ� firth[arollna9egartmenlofFm9ronmrntalQualhVlDivlsWnaFWaterResaurcrs Ash,v11k Rc9i—IMcc12090U.5.HVghwayX I1 wanna—. North C 11na 28TT6 ou.s.nwo.xv..w o.iNJ-� 62&296.45C0 DocuSign Envelope ID: 03DD845E-A4A2-4656-9A7D-F3D556D746E1 United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 Water Compliance Inspection Report 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 IN 1 2 u 3 I NC0073741 I11 121 24/01/25 I17 18I � I 19 I s I 20L] 21111I I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I II I I I I I r6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved ------------------- 67 I 72 I n, I 71 I 74 79 I I I I I I I80 701 I 71 I LL -1 I I LJ Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include Entry Time/Date Permit Effective Date POTW name and NPDES Dermit Number) 10:OOAM 24/01/25 21/01/01 Mountain Valley WWTP NCSR 1171 Exit Time/Date Permit Expiration Date Etowah NC 28729 11:OOAM 24/01/25 25/11/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Vincent L Edwards/ORC/828-674-2680/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Patty Carland,117 Kira Ln Hendersonville NC 287391407H828-890-4810/ Yes Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit 0 Flow Measurement Operations & Maintenar 0 Records/Reports Self -Monitoring Progran 0 Sludge Handling Dispo: Effluent/Receiving Wate 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 Rachel Rose Docusignedby: DWR/ARO WQ/828-296-4500/ 2/12/2024 Ev SACE19D3940C494... Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date 2/12/2024 FpDII"Si,"Idby: atait t J56SS EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# DocuSign Envelope ID: 03DD845E-A4A2-4656-9A7D-F3D556D746E1 NPDES yr/mo/day Inspection Type (Cont.) NCO073741 I11 12I 24/01/25 117 18 ici cJ Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Rachel Rose, with the Asheville Regional Office (ARO), met with Vincent Edwards (ORC) to conduct a Compliance Evaluation Inspection on January 25, 2024 for the Mountain Valley WWTP. This inspection was conducted to determine whether the facility is being operated and maintained in compliance with NPDES Permit No. NC0073741. The following items were noted during the inspection: Operations and Maintenance: The gate between the aeration basin and the aerobic digester had evidence of untreated sewage spilling over the edge of the WWTP. Measures should be taken to ensure none of the untreated wastewater leaves the facility until properly treated. Secondary Clarifier: The sludge blanket in both clarifiers was high and there was a significant amount of grease that reaches the weirs even with twice per week cleaning of the weirs. Continue to distribute the Fats, Oil, and Grease flyers to educate owners within the subdivision that they should not be dumping their grease down the drain. Disinfection/De-chlorination: The tubes for both the chlorination and de -chlorination tablets were degrading at the time of the inspection and should be replaced. Page# DocuSign Envelope ID: 03DD845E-A4A2-4656-9A7D-F3D556D746E1 Permit: NCO073741 Inspection Date: 01/25/2024 Owner -Facility: Mountain Valley WWTP Inspection Type: Compliance Evaluation 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: 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? Yes No NA NE ❑ ❑ ■ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Comment: The process controls analyzed are settleable solids, PH, and DO. See summary for details. Record Keeping Yes No NA NE 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? Page# 3 DocuSign Envelope ID: 03DD845E-A4A2-4656-9A7D-F3D556D746E1 Permit: NCO073741 Owner -Facility: Mountain Valley WWTP Inspection Date: 01/25/2024 Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Is a copy of the current NPDES permit available on site? 0 ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? ❑ ❑ N ❑ Comment: Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Diffused Is the basin free of dead spots? 0 ❑ ❑ ❑ Are surface aerators and mixers operational? ❑ ❑ 0 ❑ Are the diffusers operational? 0 ❑ ❑ ❑ Is the foam the proper color for the treatment process? ■ ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? 0 ❑ ❑ ❑ Is the DO level acceptable? ❑ ❑ ❑ Is the DO level acceptable?(1.0 to 3.0 mg/1) ❑ ❑ ❑ ■ Comment: The diffusers are on 24/7. The settleability was recorded at approximately 70% or 300 mL/1000 mL at the time of the inspection. 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) Yes No NA NE ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ Comment: The sludge blanket in both clarifiers measured to be at 5 ft. out of 9 ft. of water at the time of the inspection. The weirs are cleaned twice per week depending on the grease levels entering the facility; however, there is a significant amount of solids that make it to the weirs. See summary for details. Page# 4 DocuSign Envelope ID: 03DD845E-A4A2-4656-9A7D-F3D556D746E1 Permit: NCO073741 Inspection Date: 01/25/2024 Owner -Facility: Mountain Valley WWTP Inspection Type: Compliance Evaluation Aerobic Digester Yes No NA NE Is the capacity adequate? 0 ❑ ❑ ❑ Is the mixing adequate? ❑ ❑ ❑ Is the site free of excessive foaming in the tank? ■ ❑ ❑ ❑ # Is the odor acceptable? S ❑ ❑ ❑ # Is tankage available for properly waste sludge? 0 ❑ ❑ ❑ Comment: The facilitv wastes one to two times per month and the diffusers turn on when the facility is wasting. The facility was not wasting at the time of the inspection. The digester is pumped every 3-4 months. The last pumping service was done on January 22, 2024 by ACL Pumping. Disinfection -Tablet Yes No NA NE Are tablet chlorinators operational? 0 ❑ ❑ ❑ Are the tablets the proper size and type? 0 ❑ ❑ ❑ Number of tubes in use? 2 Is the level of chlorine residual acceptable? ❑ ❑ ❑ Is the contact chamber free of growth, or sludge buildup? 0 ❑ ❑ ❑ Is there chlorine residual prior to de -chlorination? ❑ ❑ ❑ Comment: The solids in the contact chamber are pumped back into the aeration basin weekly. See summary for details. De -chlorination Yes No NA NE Type of system ? Tablet Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ 0 ❑ Is storage appropriate for cylinders? ❑ ❑ 0 ❑ # Is de -chlorination substance stored away from chlorine containers? 0 ❑ ❑ ❑ Comment: Are the tablets the proper size and type? 0 ❑ ❑ ❑ Are tablet de -chlorinators operational? ■ ❑ ❑ ❑ Number of tubes in use? 2 Comment: See summary for details. Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? ■ ❑ ❑ ❑ Is flow meter calibrated annually? 0 ❑ ❑ ❑ Is the flow meter operational? 0 ❑ ❑ ❑ Page# 5 DocuSign Envelope ID: 03DD845E-A4A2-4656-9A7D-F3D556D746E1 Permit: NCO073741 Owner -Facility: Mountain Valley WWTP Inspection Date: 01/25/2024 Inspection Type: Compliance Evaluation Flow Measurement - Effluent Yes No NA NE (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ 0 ❑ Comment: The flow meter was last calibrated on June 6, 2023 by Laboratory Instrument Services. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? ❑ ❑ ❑ Is sample collected below all treatment units? 0 ❑ ❑ ❑ 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: The permanent effluent composite sampler was broken at the time of the inspection and there are plans to fix the permanent composite sampler. The ORC uses a portable composite sample to take the effluent samples which was not hooked up at the time of the inspection. 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? 0 ❑ ❑ ❑ If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ 0 ❑ 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: A portable generator is available through A & D water Service as needed. Yes No NA NE ❑ ■ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ Page# 6