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Home My WebLink AboutNC0081426_Compliance Evaluation Inspection_20180628 Y �' 5 ROY COOPER Governor MICHAEL S.REGAN Secretary Water Resources # LINDA CULPEPPER Environmental Quality Interim Director • June 28,2018 Mr. Steven Drew,Director Water Resources Department City of Greensboro P.O. Box 3136 Greensboro,NC 27402-3136 RECEIVE®/DENRIDWR JUL 1 0 2018 SUBJECT: Compliance Evaluation Inspection N.L.Mitchell WTP Discharge—City of Greensboro Water Resources NPDES Permit No.NC0081426 Permitting Section Guilford County Dear Mr. Drew: On June 25, 2018, Jenny Graznak and Kelli Park of this office met with Larry Nance,Earl Green,Ali Khan, and Dell Harney to perform a Compliance Evaluation Inspection on the permitted wastewater discharge from the N.L. Mitchell Water Treatment Plant. The inspection findings are detailed below and an inspection checklist is attached. 1.Permit The current permit became effective April 24,2017 and will expire June 30,2021.A copy of the permit was available for review during the inspection. 2. Self-Monitoring Program Due to the ongoing construction at this facility, all wastewater has been routed to sanitary sewer since 2015. The facility still completes discharge monitoring reports (DMRs)with no data. 3. Flow Measurement The permit requires continuous flow recording and annual calibration of the flow measuring device. When discharging,the daily effluent flow values reported on the DMRs are measured using an in-line totalizing meter on the decant line. This meter is typically calibrated every six months by City staff. 4. Operations and Maintenance The Operator in Responsible Charge (ORC) for this facility is Larry Nance. Construction is currently underway at the Mitchell WTP to upgrade the water treatment facility. The facility plans to start discharging wastewater again within the next 6 months. 5. Facility Site Review The treatment components for the filter backwash wastewater treatment system consist of the following: a transfer basin with three pumps, dechlorination with calcium thiosulfate,a single settling basin with four floating decanters and a water spray pump for chlorine dissipation, in-line totalizing flow meter, and effluent discharge line. <:->"-Nothing Compares . State of North Carolina I Environmental Quality 450 W.Hanes Mill Road,Suite 300,Winston-Salem,North Carolina 27105 Phone:336-776-98001 FAX:336-776-9797 6.Effluent/Receiving Waters The system is permitted to discharge into North Buffalo Creek, classified as WS-V; NSW waters in the Cape Fear River Basin. Should you have any questions concerning this report,please contact Jenny Graznak or me at(336) 776-9800. Sincerely, AL kit-72Stif Sherri V.Knight,PE Regional Supervisor Water Quality Regional,Operations Section Division of Water Resources Attachments: Inspection Report cc: Larry Nance Jr, (Larry.Nance@greensboro-nc.gov) NPDES Unit Central Files WSRO V,, i� 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 I,,, I 2 [5 I 3 I NC0081426 111 12 L 18/06/25 117 18 tILL1 19 [ j 201 I 21111 1 1 1 1 1 111 I m 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 1 166 Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA Reserved 671 I 70 Li 71 L LJ I 72 I N I 731 I 1 74 79 1 1 1 1 1 1 180 Section B:FacilityiData Name and Location of Facility Inspected(For Industrial Users discharging to POTW,also include Entry Time/Date Permit Effective Date POTW name and NPDES permit Number) 10'OOAM 18/06/25 17/06/01 N.L Mitchell WTP 1041 Battleground Ave Exit Time/Date Permit Expiration Date 11 30AM 18/06/25 21/06/30 Greensboro NC 274088322 Name(s)of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data /// Larry S Nance/ORC/336-373-7660/ ' Name,Address of Responsible Official/Title/Phone and Fax Number . Contacted Barry K Parsons,PO Box 3136 Greensboro NC 274023136/1336-373-7643/ No Section C.Areas Evaluated During Inspection(Check only those areas evaluated) II Permit • Records/Reports El 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 Jen er F Graznak WSRO WQ//336-771-5000/ (o[g (2c. M Signature of Management Q A ReviewerAgency/Office/Phone and Fax Numbers Date ALY e., 6 l/! /7 a EPA Form 3560-3(Rev 9-94)Previous editions are obsolete Page# 1 .1 NPDES yr/mo/day Inspection Type (Cont.) 1 31 NC0081426 I11 121 18/06/25 117 18 11 Section D:Summary of Finding/Comments tAttach additional sheets of narrative and checklists as necessary) 1. Permit The current permit became effective April 24, 2017 and will expire June 30, 2021.A copy of the permit was available for review during the inspection. 2. Self-Monitoring Program Due to the ongoing construction at this facility, all wastewater has been routed to sanitary sewer since 2015. The facility still completes discharge monitoring reports (DMRs)with no data. 3. Flow Measurement The permit requires continuous flow recording and annual calibration of the flow measuring device. When discharging,the daily effluent flow values reported on the DMRs are measured using an in-line totalizing meter on the decant line. This meter is typically calibrated every six months by City staff. 4. Operations and Maintenance The Operator in Responsible Charge (ORC)for this facility is Larry Nance. Construction is currently , underway at the Mitchell WTP to upgrade the water treatment facility. The facility plans to start discharging wastewater again within next 6 months. 5. Facility Site Review The treatment components for the filter backwash wastewater treatment system consist of the following: a transfer basin with three pumps, dechlorination with calcium thiosulfate, a single settling basin with four floating decanters and a water spray pump for chlorine dissipation, in-line totalizing flow meter, and effluent discharge line. 6. Effluent/Receiving Waters The system is permitted to discharge into North Buffalo Creek, classified as WS-V; NSW waters in the Cape Fear River Basin. Page# 2 Permit: NC0081426 Owner-Facility: N.L Mitchell WTP Inspection Date: 06/25/2018 Inspection Type: Compliance Evaluation Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new 0 0 • 0 application? • Is the facility as described in the permit'? • ❑ ❑ 0 #Are there any special conditions for the permit'? ❑ U ❑ ❑ Is access to the plant site restricted to the general public? • 0 0 0 Is the inspector granted access to all areas for inspection? • 0 0 0 Comment: A copy of the permit was available for review during the inspection. Record Keeping Yes No NA NE Are records kept and maintained as required by the permit'? • 0 ❑ 0 Is all required information readily available, complete and current'? • 0 ❑ 0 Are all records maintained for 3 years(lab. reg. required 5 years)? • ❑ 0 0 Are analytical results consistent with data reported on DMRs? • 0 ❑ 0 Is the chain-of-custody complete? 0 ❑ I 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? 0 0 • ❑ (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? • 0 0 ❑ Is the ORC certified at grade equal to or higher than the facility classification'? • 0 0 0 Is the backup operator certified at one grade less or greater than the facility classification'? • 0 0 ❑ 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'? 0 ❑ • 0 Comment: Due to the ongoing construction at this facility, all wastewater has been routed to sanitary sewer since 2015. The facility still completes discharge monitoring reports (DMRs)with no data. Page# 3