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Home My WebLink AboutNC0075078_Compliance Evaluation Inspection_20200220ROY COOPER Governor MICHAEL S. REGAN Secretary S. DANIEL SMITH Director Mr. John C. Yates County Manager 110 North St. Wilkesboro, NC 28697 NORTH CAROLINA Environmental Quality February 20, 2020 SUBJECT: Compliance Evaluation Inspection Wilkes County Airport WWTP NPDES Permit No. NCO075078 Wilkes County Dear Mr. Hooper, On February 17, 2020, Kelli Park, of this office, met with Jimmy Martin, Operator in Responsible Charge, and Dustin Caudill, Backup Operator in Responsible Charge, to perform a Compliance Evaluation Inspection at the Wilkes County Airport wastewater treatment plant. This type of inspection consists of two basic parts: an in -office file review and an on -site inspection of the treatment facility. The attached EPA inspection form details the areas that were evaluated during this inspection. The inspection of the facility was satisfactory. If you have any questions regarding the inspection or this report, please contact Kelli Park or me at (336) 776-9800 or by email at kelli.park(a-)_ncdenr.gov or Ion. snider(a_ncdenr.gov. Sincerely, EDocu S�igfned<by: LJn l tiAl�tf 145B49B225C94BA... Lon Snider Regional Supervisor Water Quality Regional Operations Division of Water Resources Attachments: EPA Water Compliance Inspection Report cc: WSRO D � North Carolina Department of Environmental Quality I Division of Water Resources Winston-Salem Regional Office [ 450 West Hanes Mill Road, Suite 300 I Winston-Salem, North Carolina 27105 NOh �HCARO UHA ^^ •^^ma^� u�•i` r 336.776.9800 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 15 I 3 I NCO075078 111 12 I 20/02/17 I17 18 I S J 19 L G] 201 I 211111 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 f6 Inspection Work Days Facility Self -Monitoring Evaluation Rating 131 QA ---------------------- Reserved ------------------- 671 70 I I 71 I I 72 I r I 73 � 74 75I I I I I I I I80 u ty I I 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 oermit Number) 10:30AM 20/02/17 19/02/01 Wilkes County Airport 640 Wood Wallace Dr Exit Time/Date Permit Expiration Date North Wilkesboro NC 28659 11:00AM 20/02/17 23/09/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Jimmy Lee Martin/ORC/336-838-5001/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Jack Steelman,640 Wood Wallace Dr North Wilkesboro NC 28659//336-696-2000/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Operations & Maintenance Records/Reports Self -Monitoring Program 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 Kelli A Park DWR/WSRO WQ/336-776-9689/ DocuSigned by: 1�tu; Pwi.{i 2/20/2020 Signature of Management Q A Reviewer Docusigned by: Agency/Office/Phone and Fax Numbers Date 2/20/2020 1451349E225C94EA... EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type (Cont.) NCO075078 I11 121 20/02/17 117 18 ICI Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) On February 17, 2020, Kelli Park, of this office, met with Jimmy Martin, Operator in Responsible Charge, and Dustin Caudill, Backup Operator in Responsible Charge, to perform a Compliance Evaluation Inspection at the Wilkes County Airport wastewater treatment plant. This type of inspection consists of two basic parts: an in -office file review and an on -site inspection of the treatment facility. The attached EPA inspection form details the areas that were evaluated during this inspection. The inspection of the facility was satisfactory. If you have any questions regarding the inspection or this report, please contact Kelli Park or me at (336) 776-9800 or by email at kelli.park@ncdenr.gov or Ion.snider@ncdenr.gov. Page# Permit: NCO075078 Inspection Date: 02/17/2020 Owner - Facility: Wilkes County Airport 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? Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Renewal Application was sent in on 3/20/2018. The facility is currentlV operating under a draft permit. Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? 0 ❑ ❑ ❑ Is all required information readily available, complete and current? 0 ❑ ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? 0 ❑ ❑ ❑ Are analytical results consistent with data reported on DMRs? 0 ❑ ❑ ❑ Is the chain -of -custody complete? 0 ❑ ❑ ❑ 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? ❑ ❑ ❑ Page# 3 Permit: NCO075078 Inspection Date: 02/17/2020 Record Keeping Facility has copy of previous year's Annual Report on file for review? Owner - Facility: Wilkes County Airport Inspection Type: Compliance Evaluation Yes No NA NE ❑ ❑ ■ ❑ Comment: ORC is a grade 3, bORC is a grade 1. A copy of the draft permit and the previous permit are on site. Field parameters are tested there under certification number 4517, Meritech lab does the other analyses Equalization Basins Yes No NA NE Is the basin aerated? 0 ❑ ❑ ❑ Is the basin free of bypass lines or structures to the natural environment? 0 ❑ ❑ ❑ Is the basin free of excessive grease? 0 ❑ ❑ ❑ Are all pumps present? 0 ❑ ❑ ❑ Are all pumps operable? 0 ❑ ❑ ❑ Are float controls operable? 0 ❑ ❑ ❑ Are audible and visual alarms operable? ❑ ❑ 0 ❑ # Is basin size/volume adequate? 0 ❑ ❑ ❑ Comment: 2 pumps 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? 0 ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? 0 ❑ ❑ ❑ Is the DO level acceptable? 0 ❑ ❑ ❑ Is the DO level acceptable?(1.0 to 3.0 mg/1) 0 ❑ ❑ ❑ Comment: DO is maintained around 2-3 mq/L Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? 0 ❑ ❑ ❑ Is the site free of excessive buildup of solids in center well of circular clarifier? 0 ❑ ❑ ❑ Are weirs level? 0 ❑ ❑ ❑ Is the site free of weir blockage? 0 ❑ ❑ ❑ Page# 4 Permit: NCO075078 Owner - Facility: Inspection Date: 02/17/2020 Inspection Type: Wilkes County Airport Compliance Evaluation Secondary Clarifier Yes No NA NE Is the site free of evidence of short-circuiting? 0 ❑ ❑ ❑ Is scum removal adequate? 0 ❑ ❑ ❑ Is the site free of excessive floating sludge? 0 ❑ ❑ ❑ Is the drive unit operational? 0 ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? 0 ❑ ❑ ❑ Is the overflow clear of excessive solids/pin floc? 0 ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) 0 ❑ ❑ ❑ Comment: There were some floatina solids in the clarifier the day of inspection. Clarifier was pumped in March 2019. Records of pumping are kept. What is pumped gets taken to the North Wilkesboro plant. Myers septic tank service is used for pumping. Water in the clarifiers was murky 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? 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: Water in the chlorine tank was very turbid/murky at the time of inspection 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? Are the tablets the proper size and type? Comment: Water in the dechlorination tank was very turbid/murky at the time of inspection Are tablet de -chlorinators operational? Number of tubes in use? Comment: Effluent Pipe i ❑ ❑ ❑ ■ ■ ❑ ❑ ❑ ❑ ❑ ❑ ■ Yes No NA NE Tablet ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ N Yes No NA NE Page# 5 Permit: NCO075078 Inspection Date: 02/17/2020 Owner - Facility: Wilkes County Airport Inspection Type: Compliance Evaluation Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? 0 ❑ ❑ ❑ 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: The flow coming out of the pipe was very minimal at the time of inspection. All that was coming out of the pipe was a drip of water every second or so. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? ❑ ❑ 0 ❑ Is sample collected below all treatment units? 0 ❑ ❑ ❑ Is proper volume collected? 0 ❑ ❑ ❑ Is the tubing clean? ❑ ❑ 0 ❑ # 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 M ❑ ❑ ❑ representative)? Comment: Grab samples are taken from a holding tank after the dechlorination step and then put on ice. The effluent flow from the plant is measured by a water meter. There is no flow meter at the Ip ant. Laboratory Yes No NA NE Are field parameters performed by certified personnel or laboratory? 0 ❑ ❑ ❑ Are all other parameters(excluding field parameters) performed by a certified lab? 0 ❑ ❑ ❑ # Is the facility using a contract lab? 0 ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees 0 ❑ ❑ ❑ Celsius)? Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees? ❑ ❑ 0 ❑ Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? ❑ ❑ 0 ❑ Comment: Field parameters are tested there under certification number 4517, Meritech lab does the other analyses The previous inspection noted that the chlorine meter was not reading as low as their permit limit. The problem has since been fixed and the meter can now read lower than the permit limit. Flow is measured by the water meters/ water bills from all contributing sources. Page# 6