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Home My WebLink AboutNC0025071_Compliance Evaluation Inspection_20211008R.OY COOPER. Governor ELIZABETH S. BISER Secretary S. DANIEL SMITH Director NORTH CAROLINA Environmental Quality October 8, 2021 Melinda Ward, Utilities Superintendent City of Eden P.O. Box 70 Eden, NC 27289 SUBJECT: Compliance Evaluation Inspection Mebane Bridge WWTP NPDES Permit No. NC0025071 Rockingham County Dear Ms. Ward, On August 5, 2021, Gary Hudson of this office met with Chris Powell to perform a Compliance Evaluation Inspection at the above referenced 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 Gary Hudson or me at (336) 776-9800 or by email at gary.hudson@ncdenr.gov or lon.snider@ncdenr.gov. Sincerely, F1t), DocuSiiggned by: l . Jn.IAhr45B49E225C94EA... Lon Snider Regional Supervisor Water Quality Regional Operations Division of Water Resources Attachments: EPA Water Compliance Inspection Report cc: WSRO NORTH D E D.psrtmem of Envimnmomni au.i` North Carolina Department of Environmental Quality Division of Water Resources Winston-Salem Regional Office 450 West Hanes Mill Road, Suite 300 I Winston-Salem, North Carolina 27105 336.776.9800 United States Environmental Protection Agency E PA 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 1 IN 21IIIIII Code NPDES yr/mo/day Inspection I 2 I5 I 3 I NC0025071 111 121 21/08/05 117 Type 181 IIIIIIIIIII Inspector Fac Type 19I S I 201 IIIIIIIIIIIIIIIIII I IIIIII P6 Inspection 671 Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved I 70I I 711 172 I N I 731 I 74 71 I I I I I I I I 180 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES oermit Number) Mebane Bridge WWTP 204 Mebane Bridge Rd Eden NC 27288 Entry Time/Date 09:OOAM 21/08/05 Permit Effective Date 21/05/01 Exit Time/Date 12:OOPM 21/08/05 Permit Expiration Date 26/04/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Christopher Ray Powell/ORC/336-627-1009/ Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Melinda S Ward,PO Box 70 Eden NC 272890070//336-627-1009/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenar Records/Reports Self -Monitoring Progran Sludge Handling DispoFacility Site Review 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 Gary Hudson DWR/Division of Water Quality/336-776-9694/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date rDocuSigned by: t- T. StiAcr 145B49E225C94EA... EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 1 3I NPDES yr/mo/day NC0025071 111 121 21/08/05 117 Inspection Type 18 [j (Cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) *The WWTP appeared to be very well operated and maintained. The WWTP staff uses a target mean cell residence time (MCRT) to adjust sludge wasting rates, which varies between summer and winter months. *The current permit became effective May 1, 2021 and will expire April 30, 2026. *WWTP staff as well as the laboratory staff do a very good job of keeping records of all plant data. *The influent composite sampler is set up using constant time/constant volume. The facility recently installed a BCR CleanB Biosolids dewatering system and it appears to be very effective. *AII the secondary clarifiers were clean and well maintained. Page# 2 Permit: NC0025071 Inspection Date: 08/05/2021 Owner - Facility: Mebane Bridge WWTP Inspection Type: 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 II ❑ ❑ ❑ Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: The WWTP appeared to be very well operated and maintained. The WWTP staff uses a target mean cell residence time (MCRT) to adjust sludge wasting rates, which varies between summer and winter months. Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new El ❑ • El 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: The current permit became effective May 1, 2021 and will expire April 30, 2026. 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • • • Page# 3 Permit: NC0025071 Inspection Date: 08/05/2021 Owner - Facility: Mebane Bridge WWTP Inspection Type: Compliance Evaluation Record Keeping 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? Facility has copy of previous year's Annual Report on file for review? Yes No NA NE • ❑ ❑ ❑ ▪ El El El • ❑ ❑ ❑ Comment: WWTP staff as well as the laboratory staff do a very good job of keeping records of all plant data. Flow Measurement - Influent # 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ▪ ❑ ❑ ❑ Comment: The influent composite sampler is set up using constant time/constant volume. Solids Handling Equipment Yes No NA NE Is the equipment operational? • ❑ ❑ ❑ Is the chemical feed equipment operational? • El El El Is storage adequate? • El El El Is the site free of high level of solids in filtrate from filter presses or vacuum filters? • ❑ ❑ ❑ Is the site free of sludge buildup on belts and/or rollers of filter press? ■ ❑ ❑ ❑ Is the site free of excessive moisture in belt filter press sludge cake? • El El El The facility has an approved sludge management plan? • El El El Comment: The facility recently installed a BCR CleanB Biosolids dewatering system and it appears to be very effective. Aerobic Digester Yes No NA NE Is the capacity adequate? El ❑ • El Is the mixing adequate? El El • El Is the site free of excessive foaming in the tank? El El • El # Is the odor acceptable? El El • El # Is tankage available for properly waste sludge? El ❑ • El Comment: Secondary Clarifier Is the clarifier free of black and odorous wastewater? Yes No NA NE Page# 4 Permit: NC0025071 Inspection Date: 08/05/2021 Owner - Facility: Mebane Bridge WWTP Inspection Type: Compliance Evaluation Secondary Clarifier Yes No NA NE 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) Comment: All the secondary clarifiers were clean and well maintained. • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 5