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HomeMy WebLinkAboutNC0021474_Regional Office Historical File Pre 2016ppppppp- IAL NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Donald R. van der Vaart Governor Secretary July 6, 2015 Mr. David Cheek, City Manager City of Mebane 106 E. Washington Street Mebane, North Carolina 27302 Subject: Compliance Evaluation Inspection NPDES Permit No. NCO021474 City of Mebane Wastewater Treatment Plant Alamance County Dear Mr. Cheek: Jenny Graznak of this office performed a Compliance Evaluation Inspection at the Mebane Wastewater Treatment Plant in Alamance County on July 1, 2015. Dennis Hodge, Operator in Responsible Charge (ORC), was present for the inspection. This type of inspection consists of two basic parts: an in -office review of facility files and self -monitoring data and an on -site inspection of the facility. This particular inspection evaluated nine (9) areas, and observations from each area are addressed below: 1. Permit The permit became effective on July 1, 2014 and will expire on May 31, 2019. 2. Self -Monitoring Program A review of the monthly Discharge Monitoring Reports (DMRs) for the period of June 2014 through May 2015 showed that all parameters were sampled and analyzed per the requirements of the permit. Limit violations were noted on the DMR for March 2015, resulting from a high flow event due to ice and snow melt. These violations were addressed in previous correspondence from this office. 3. Laboratory The plant's on -site laboratory (#138) is certified for the following permit parameters: Total Residual Chlorine, Fecal Coliform, Conductivity, Dissolved Oxygen, Total Phosphorus, pH, Total Suspended Solids, and Temperature. R & A Laboratories analyzes Metals and BOD, while Meritech, Inc. analyzes Nutrients plus Ammonia, and Chronic Toxicity. 4. Flow Measurement Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated quarterly by Instrument Specialists, Inc. Verification of the last calibration event, which occurred June 2015, was available during the inspection. 5. Sludge Handling and Disposal The plant has two aerobic digesters. Synagro visits the facility quarterly with a sludge press. Dewatered sludge cakes are then transported to the McGill compost facility in New Hill, North Carolina. 450 West Hanes Mill Road, Suite 300, Winston-Salem, NC 27105 Phone: 336-776-98001 Internet: www.ncwater.org An Equal Opportunity 1 Affirmative Action Employer - Made in part by recycled paper 6. Operations & Maintenance Anthony Bowes and Amy Varinoski are Back -Up ORCs. Operation and maintenance at the facility appear to be excellent. The plant operates a preventative maintenance database via Hach JOB Cal. Maintenance staff issues work orders once per month and more frequently for repairs. A SCADA system is used to monitor some operations at the plant, such as process control parameters. Mr. Hodges can access this information from this iPhone. The facility has installed a new generator, which is capable of running the entire plant and is exercised weekly under load. 7. Facility Site Review Plant influent is screened and metered for reporting purposes. The plant includes two large aerations basins, which were both in use at the time of inspection. The plant also includes three clarifiers, a tertiary filtration system (Aqua Mini Disk with Cloth Media Filter designed by Aqua -Aerobic Systems, Inc.), liquid chlorination, and liquid dechlorination. 8. Records/Reports The DMRs, files, operators' logs, and lab data are maintained according to the permit. A copy of this data was available for review during the inspection. Plant data and records are very well organized and maintained. 9. Effluent/Receiving Waters The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. The facility was found to be in compliance with NPDES Permit No. NC0021474. We appreciate the City's efforts to comply with the requirements of this permit. Please refer to the attached report for specific details from the inspection. If you have any questions concerning this report, please contact Ms. Graznak or me at (336) 776-9800. Sincerely, k�sherri V. Knight, P.E., Assistant Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDENR cc: Central Files WSRO ppppppp- United States Environmental Protection Agency Form Approved. EPA Washington, D C 20460 OMB No. 2040-0057 Water Compliance Inspection Report Approval expires 6-31-96 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 IN 1 2 �--[5 ] 3 I NCO021474 I11 12 15/07/01 17 18 L C J 19 1 G 201 u1 =I 211 1 1 1 11 1 1 1 1 11 I 1 1 1 I 1 1 1 1 1 1 1 1 1 I I I I I I I I I I I I I I I f 6 Inspection Work Days Facility Self -Monitoring Evaluation Rating 131 QA --------- —-------- Reserved --- -------- 67 70 [_j 71 LJ 72 LJ ,,j 73I I ]74 75 111 1 11180 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 permit Number) 10:OOAM 15/07/01 14/07/01 Mebane WWTP Exit Time/Date Permit Expiration Date 635 Corregidor Rd Mebane NC 27302 01:30PM 15/07/01 19/05/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Dennis James Hodge/ORC/919-304-9215/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Linda R Holt,106 E Washington St Mebane NC 27302H919-563-6141/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit 0 Flow Measurement Operations & Maintenance Records/Reports Self -Monitoring Program N Sludge Handling Disposal 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 Jennifer F Graznak WSRO WQ//336-771-5000/ '7/b/a 01S 9!41,' / _ ft . Management Signature of Q A Reviewer Agency/Office/Phone and Fax Numbers Date 0 EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type (Cont.) 31 NCO021474 �11 12 15/07/01 17 18 I c I Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) 1. Permit The permit became effective on July 1, 2014 and will expire on May 31, 2019. 2. Self -Monitoring Program A review of the monthly Discharge Monitoring Reports (DMRs) for the period of June 2014 through May 2015 showed that all parameters were sampled and analyzed per the requirements of the permit. Limit violations were noted on the DMR for March 2015, resulting from a high flow event due to ice and snow melt. These violations were addressed in previous correspondence from this office. 3. Laboratory The plant's on -site laboratory (#138) is certified for the following permit parameters: Total Residual Chlorine, Fecal Coliform, Conductivity, Dissolved Oxygen, Total Phosphorus, pH, Total Suspended Solids, and Temperature. R & A Laboratories analyzes Metals and BOD, while Meritech, Inc. analyzes Nutrients plus Ammonia, and Chronic Toxicity. 4. Flow Measurement Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated quarterly by Instrument Specialists, Inc. Verification of the last calibration event, which occurred June 2015, was available during the inspection. 5. Sludge Handling and Disposal The plant has two aerobic digesters. Synagro visits the facility quarterly with a sludge press. Dewatered sludge cakes are then transported to the McGill compost facility in New Hill, North Carolina. 6. Operations & Maintenance Anthony Bowes and Amy Varinoski are Back -Up ORCs. Operation and maintenance at the facility appear to be excellent. The plant operates a preventative maintenance database via Hach JOB Cal. Maintenance staff issues work orders once per month and more frequently for repairs. A SCADA system is used to monitor some operations at the plant, such as process control parameters. Mr. Hodges can access this information from this iPhone. The facility has installed a new generator, which is capable of running the entire plant and is exercised weekly under load. 7. Facility Site Review Plant influent is screened and metered for reporting purposes. The plant includes two large aerations basins, which were both in use at the time of inspection. The plant also includes three clarifiers, a tertiary filtration system (Aqua Mini Disk with Cloth Media Filter designed by Aqua -Aerobic Systems, Inc.), liquid chlorination, and liquid dechlorination. 8. Records/Reports The DMRs, files, operators' logs, and lab data are maintained according to the permit. A copy of this data was available for review during the inspection. Plant data and records are very well organized and maintained. 9. Effluent/Receiving Waters The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. Page# ppppppp- Permit: NCO021474 Owner -Facility: Mebane vwVTP Inspection Date: 07/01/2015 Inspection Type: Compliance Evaluation Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? M ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ ❑ ❑ Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: Operation and maintenance at the facility appear to be excellent. Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new ❑ ❑ 0 ❑ application? Is the facility as described in the permit? 0 ❑ ❑ ❑ # Are there any special conditions for the permit? ❑ 0 ❑ ❑ Is access to the plant site restricted to the general public? 0 ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? 0 ❑ ❑ ❑ Comment: The permit became effective on July 1 2014 and will expire on May 31, 2019. Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? M ❑ ❑ ❑ 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? ❑ ❑ ❑ 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? 0 ❑ ❑ ❑ Has the facility submitted its annual compliance report to users and DWQ? M ❑ ❑ ❑ (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator ❑ ❑ 0 ❑ on each shift? Is the ORC visitation log available and current? 0 ❑ ❑ ❑ Is the ORC certified'at grade equal to or higher than the facility classification? 0 ❑ ❑ ❑ Is the backup operator certified at one grade less or greater than the facility classification? M ❑ ❑ ❑ Is a copy of the current NPDES permit available on site? ❑ ❑ ❑ Page# 3 Permit: NC0021474 Owner - Facility: Mebane WWTP Inspection Date: 07/01/2015 Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Facility has copy of previous year's Annual Report on file for review? ❑ ❑ ❑ Comment: 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? ❑ ❑ N ❑ Comment: The effluent appeared clear with no visible solids. 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? 0 ❑ ❑ ❑ # Is tankage available for properly waste sludge? 0 ❑ ❑ ❑ 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? 0 ❑ ❑ ❑ Is the unit in good condition? 0 ❑ ❑ ❑ Comment: 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 ❑ ❑ ❑ Is the site free of evidence of short-circuiting? 0 ❑ ❑ ❑ Page# 4 ppppppp- Permit: NCO021474 Owner - Facility: Mebane VWVTP Inspection Date: 07/01/2015 Inspection Type: Compliance Evaluation Secondary Clarifier Yes No NA NE Is scum removal adequate? E ❑ ❑ ❑ Is the site free of excessive floating sludge? 0 ❑ ❑ ❑ Is the drive unit operational? N ❑ ❑ ❑ 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 Y, of the sidewall depth) ❑ ❑ ❑ Comment: Aeration Basins Yes No NA NE Mode of operation Type of aeration system Surface Is the basin free of dead spots? 0 ❑ ❑ ❑ Are surface aerators and mixers operational? M ❑ ❑ ❑ Are the diffusers operational? ❑ ❑ N ❑ 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: De -chlorination Yes No NA NE Type of system ? Liquid Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ E ❑ ❑ Is storage appropriate for cylinders? ❑ ❑ E ❑ # Is de -chlorination substance stored away from chlorine containers? ❑ N ❑ ❑ Are the tablets the proper size and type? ❑ ❑ 0 ❑ Comment: Liquid sodium bisulfate Are tablet de -chlorinators operational? ❑ ❑ 0 ❑ Number of tubes in use? Comment: Disinfection -Liquid Yes No NA NE Is there adequate reserve supply of disinfectant? 0 ❑ ❑ ❑ Page# 5 Permit: NCO021474 Owner - Facility: Mebane WWTP Inspection Date: 07/01/2015 Inspection Type: Compliance Evaluation Disinfection -Liquid Yes No NA NE (Sodium Hypochlorite) Is pump feed system operational? M ❑ ❑ ❑ Is bulk storage tank containment area adequate? (free of leaks/open drains) 0 ❑ ❑ ❑ 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: Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? 0 ❑ ❑ ❑ Is flow meter calibrated annually? 0 ❑ ❑ ❑ Is the flow meter operational? 0 ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ M ❑ Comment: Verification of the last calibration event, which occurred June 2015, was available during the inspection. Page# 6 _& �' NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor June 12, 2015 Mr. David Cheek, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: Notice of Violation (NOV-2015-LV-0371) NPDES Permit No. NCO021474 City of Mebane Wastewater Treatment Plant Alamance County Dear Mr. Cheek: Donald R. van der Vaart Secretary A review of the self -monitoring report for the month of March 2015 revealed the following violations of permit limits: Parameter Date Limit Value Reported Value Limit Type Biochemical March 2 — 6, 15 mg/I 52.6 mg/I Weekly Average Oxygen Demand 2015 Exceeded Biochemical March 2015 10 mg/1 14.8 mg/I Monthly Average Oxygen Demand Exceeded According to documentation from the plant operator, these violations occurred during a high flow event from ice and snow melt. Thank you for your attention to this matter. Remedial actions should be taken to correct the cause of these violations. Unresolved violations may lead to the assessment of civil penalties. If you have any questions or require any additional information, please contact Jenny Graznak or me at (336) 776-9800. Cc: WSRO Central Files Sincerely, ZJ Sherri V. Knight, P.E., Assistant Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDENR 450 West Hanes Mill Road, Suite 300, Winston-Salem, NC 27105 Phone: 336-776-98001 Internet: www,ncwater.org An Equal Opportunity 1 Affirmative Action Employer — Made in part by recycled paper NPDES PERMIT NO.: NCO021474 PERMIT VERSION: 4.0 PERMIT STATUS: Active FACILITY NAME: Mebane WWTP CLASS: WW-4. COUNTY: Alamance OWNER NAME: City of Mebane ORC: Dennis James Hodge ORC CERT NUMBER: 8754 GRADE: WW-4. ORC HAS CHANGED: No eDMR PERIOD: 03-2015 (March 2015) VERSION: 1.0 STATUS: Processed SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO EB Ea 6 f E E F < .5 s O Ems°' F O y O e °u a z°. 50050 00010 00400 50060 C0310 C0610 C0530 31616 00300 Continuous S X week S X week S X week S X week 2 X week 2 X week S X week S X week Continuous Grab Grab Grab Composite Composite Composite Grab Grab FLOW I TEMP-C PH CHLORINE BOD - Cone I NH3-N - Cone TSS - Cone FEC COLI DO 2400 Hrs 2400 1 Hrs Y/B/N an d deg c su u 1 mg/1 mg/1 m 1 #/loom] Mgt] 1 1 1.372 2 1011 25.02 700 10.0 Y 2.07 10 6.9 < 15 244 30 8.9 3 940 23.48 640 10.6 Y 2.181 11 6.9 < 15 14.2 2.1 3.9 12 9.2 4 741 22.02 640 10.6 IY 1 1.623 11 7 < 15 3 < 1 18.7 5 914 25.55 635 10.7 Y 1.553 14 7.1 < 15 4.8 2.2 3.4 5 8.8 6 924 24.17 635 10.7 Y 3.221 l0 6.8 < 15 7 195 9.6 7 1 1.757 8 1 1.514 9 1011 25.02 700 10.0 ly 1 1.335 12 7.1 < 15 3.9 1 8.8 10 918 23.12 645 10.6 Y 1.36 13 7 < 15 3.3 1.7 3.4 < 1 9.2 11 920 24.03 645 10.6 Y 1.29 I5 17 < 15 4.6 1 8.7 12 1001 24.68 1645 10.6 Y 1.276 15 7.1 < 15 14 1.1 4.3 3 9 13 912 23.18 618 10.8 B 11.308 14 7.2 < 15 4.4 11 9.3 14 1.241 15 1.392 16 842 24.10 700 10.0 Y 1.262 13 7.1 < 15 3 < 1 9.1 17 926 24.73 628 1 10.7 Y 1.253 13 7.1 < 15 2.9 0.6 3.8 < 1 8.8 18 935 24.15 635 10.7 Y 1.228 14 7.1 < 15 2.4 3 2 9.2 19 924 23.82 1650 10.5 Y 1 11,214 13 7.2 < 15 2.9 3.88 1 9.7 20 956 24.53 618 10.8 B 1.586 112 7.1 < 15 4.6 1 9 9.8 21 1.593 22 1.295 23 1009 25.72 700 10.0 Y 1.285 14 7.1 < 15 2.8 < I 8.9 24 925 23.27 636 10.6 Y 1.247 13 7.1 < 15 5.1 0.4 3.1 4 9.5 25 842 23.28 640 10.6 Y 1.161 14 7.1 < 15 13.7 1 9.3 26 844 24.03 635 10.7 Y 1.352 15 7.2 < 15 3.5 1.6 3.1 3 8.3 27 1859 24.25 700 10.0 B 1.439 16 7.2 < 15 4.2 15 18.5 28 1.699 29 1.329 30 930 24.73 700 10.0 Y 1.208 12 7.1 < 15 13.6 3 9.5 31 842 123.20 637 10.6 Y 1.303 14 17.1 < 15 3.7 0.8 4.2 < 1 9 Monthly Average Limit: 2.5 10 4 30 200 Monthly Average: 1482 13.0909 7.0682 0 14.8 1.6 3.58 2.85 19.0818 Daily Maximum: 3.221 16 7.2 0 244 13.88 4.3 195 9.8 Daily Minimum: 1161 110 6.8 10 12.4 0.4 3 0 8.3 Monthly Avg % Removal (85 % ): RECEIVED a N.C. Dept. 01, EINR MAY 20115 W. NSTCN-SALEM REGIOPJAL OFFICE W. NSTCN-SALEM REGIOPJAL OFFICE PDMR Review Record Facility- PP7 bL" COL Permit No.: N'(-Q0 �? I L�~] q Pipe No.: MonthNear: M c—k-k Monthly Average Violations 0I)►5 Parameter Permit Limit DMR Value % Over Limit Action 10 ►, l L I I ._ �f �3 "�o Weekly/Daily Violations Parameter Permit Limit Limit Type DMR Value % Over Limit Action 7SDIatte- (/ - z Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Action Other Violations/Staff Remarks: See- att CT� el'VW I --P'Z!5� P C .-}-►��t-, -Pf 0)-, WLKJ1 a Ll Supervisor Remarks: ov NOV- �o � S—LV-037 Completed by: eYI VV Date: Assistant Regional Supervisor Sign Off: YVUV Date: toit Is Regional Supervisor Sign Off: Date: Graznak, Jenny From: Graznak, Jenny Sent: Tuesday, April 07, 2015 4:01 PM To: 'Dennis Hodge' Subject: RE: Mebane WWTP Thanks for the email, Dennis. Jenny Graznak NCDENR Division of Water Resources Winston-Salem Regional Office 450 W. Hanes Mill Road, Suite 300, Winston-Salem, NC 27105 Main Phone: (336) 776-9800 Direct Phone: (336) 776-9692 www.ncwater.org Email correspondence to and from this address may be subject to the NC Records Law and may be disclosed to third parties. From: Dennis Hodge[mailto:dhodge@cityofinebane.com] Sent: Tuesday, April 07, 2015 10:56 AM To: Graznak, Jenny Cc: Basinger, Corey; David Cheek Subject: RE: Mebane WWTP Good Morning Jenny, Hope you're doing well and had an enjoyable Easter. I wanted to follow up on the March 4, 2015 email. The commercial laboratory analytical results for the BOD effluent composite sample collected from March 1 to March 2, 2015 was 244.0 mg/L. The analytical results for the BOD effluent composite sample for the next day was 4.22 mg/L. The average BOD for the rest of the month excluding the 244.0 mg/L was <4.0 mg/L. However, for the month it looks like the BOD average is going to be around 20-21 mg/L. So, both the weekly average and the monthly average will be exceeded for the month of March. If you have any questions or comments please contact me. We will reference both emails when we submit the March DMR. Have a great week. Thanks, Dennis Dennis J. Hodge W"asleivtzler Director Positively Charming Water Resources 106 E Washington Street Mebane, NC 27302 0 336-906-5583 www.citvofinebane.com E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. Ve & e 4 4 " pa-4 i6m ae weu ai as 6+e4m* aiat we rf/ mpa .Lew c*0 a& .cull is. " q. n From: Graznak, Jenny[mailto:jenny.graznak@ncdenr.gov] Sent: Wednesday, March 04, 2015 8:40 AM To: Dennis Hodge Subject: RE: Mebane WWTP Hi Dennis, I'll put a copy of this email in the Mebane file. Thanks for letting us know. Take care. Jenny Graznak NCDENR Division of Water Resources Winston-Salem Regional Office 450 W. Hanes Mill Road, Suite 300, Winston-Salem, NC 27105 Main Phone: (336) 776-9800 Direct Phone: (336) 776-9692 www.ncwater.org Email correspondence to and from this address may be subject to the NC Records Law and may be disclosed to third parties. From: Dennis Hodge [mailto:dhodge@cityofinebane.com] Sent: Tuesday, March 03, 2015 7:14 PM To: Graznak, Jenny Subject: Mebane WWTP Good afternoon Jenny, I hope you're doing well. I wanted to let you know about an incident at the Mebane's WWTP. Last Sunday, March 1, 2015 our on -call operator received a high influent flow alarm from the plant. When he came in to check it the influent flow was peaking at around 4.5 MG. The high flow was due to ice and snow melting and entering the City's collection system. One of our clarifiers was overloaded for a short period due to the high flow coupled with one clarifier being temporarily off-line for scheduled gear drive rehabilitation. We were able to divert half of the flow into our spare aeration basin which eliminated the overload conditions. During the high flow the clarifier lost some suspended solids. Within an hour the plant was back to normal as we continued diverting half of the flow to the spare basin overnight. The results are not in but we will probably have an elevated effluent composite BOD result for that 24 hour period. If you have any questions or need additional information please contact me. MONITORING REPORT(MR) VIOLATIONS for: Report Date: 06/30/15 Page: 1 of 1 PERMIT: NCO021474 FACILITY: City of Mebane -Mebane WWTP COUNTY: Alamance REGION: Winston-Salem Limit Violation MONITORING OUTFALL/ VIOLATION UNIT OF CALCULATED REPORT PPI LOCATION PARAMETER DATE FREQUENCY MEASURE LIMIT VALUE Over VIOLATION TYPE VIOLATION ACTION 09 _ 2014 001 Effluent BOD, 5-Day (20 Deg. C) - 09/06/14 5 X week mg/I 7.5 9.18 22.4 Weekly Average No Action, BPJ Concentration Exceeded 03 _ 2015 001 Effluent BOD, 5-Day (20 Deg. C) - 03/07/15 5 X week mg/I 15 52.6 250.7 Weekly Average Proceed to NOV Concentration Exceeded 03 - 2015 001 Effluent BOD, 5-Day (20 Deg. C) - 03/31 /15 5 X week mg/I 10 14.8 48 Monthly Average Proceed to NOV Concentration Exceeded 08 - 2014 001 Effluent Chlorine, Total Residual 08/05/14 5 X week ug/I 17 38 123.5 Daily Maximum No Action, BPJ Exceeded 01 -2015 001 Effluent Chlorine, Total Residual 01/27/15 5 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ Exceeded Graznak, Jenny From: Dennis Hodge <dhodge@cityofinebane.com> Sent: Tuesday, April 07, 2015 10:56 AM To: Graznak, Jenny Cc: Basinger, Corey; David Cheek Subject: RE: Mebane WWTP Good Morning Jenny, Hope you're doing well and had an enjoyable Easter. I wanted to follow up on the March 4, 2015 email. The commercial laboratory analytical results for the BOD effluent composite sample collected from March 1 to March 2, 2015 was 244.0 mg/L. The analytical results for the BOD effluent composite sample for the next day was 4.22 mg/L. The average BOD for the rest of the month excluding the 244.0 mg/L was <4.0 mg/L. However, for the month it looks like the BOD average is going to be around 20-21 mg/L. So, both the weekly average and the monthly average will be exceeded for the month of March. If you have any questions or comments please contact me. We will reference both emails when we submit the March DMR. Have a great week. Thanks, Dennis Dennis J. Hodge Wrrsteivuicr Director- eOane Positively Charming Water Resources 106 E Washington Street Mebane, NC 27302 G 336-906-5583 www.cityofinebane.com E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. "9t' w *4 4 " 9mdto" 4 draw de a*& od aw Awe& 1pe gist aw 4wova Am woo rAat ftw ra. " q. 7tmom From: Graznak, Jenny[mailto;jenny.graznak(aOncdenr.gov] Sent: Wednesday, March 04, 2015 8:40 AM To: Dennis Hodge Subject: RE: Mebane WWTP Hi Dennis, I'll put a copy of this email in the Mebane file. Thanks for letting us know. Take care. Jenny Graznak NCDENR Division of Water Resources Winston-Salem Regional Office 450 W. Hanes Mill Road, Suite 300, Winston-Salem, NC 27105 Main Phone: (336) 776-9800 Direct Phone: (336) 776-9692 www.ncwater.org Email correspondence to and from this address may be subject to the NC Records Law and may be disclosed to third parties. From: Dennis Hodge[mailto:dhodge@cityofinebane.com] Sent: Tuesday, March 03, 2015 7:14 PM To: Graznak, Jenny Subject: Mebane WWTP Good afternoon Jenny, I hope you're doing well. I wanted to let you know about an incident at the Mebane's WWTP. Last Sunday, March 1, 2015 our on -call operator received a high influent flow alarm from the plant. When he came in to check it the influent flow was peaking at around 4.5 MG. The high flow was due to ice and snow melting and entering the City's collection system. One of our clarifiers was overloaded for a short period due to the high flow coupled with one clarifier being temporarily off-line for scheduled gear drive rehabilitation. We were able to divert half of the flow into our spare aeration basin which eliminated the overload conditions. During the high flow the clarifier lost some suspended solids. Within an hour the plant was back to normal as we continued diverting half of the flow to the spare basin overnight. The results are not in but we will probably have an elevated effluent composite BOD result for that 24 hour period. If you have any questions or need additional information please contact me. Thanks, Dennis Dennis J. Hodge Weistewtiler Director _.r e6aKe PUsi;.,., 1, Churrning Water Resources 106 E Washington Street Mebane, NC 27302 Gramak, Jenny From: Dennis Hodge <dhodge@cityofinebane.com> Sent: Tuesday, March 03, 2015 7:14 PM To: Graznak, Jenny Subject: Mebane WWTP Good afternoon Jenny, I hope you're doing well. I wanted to let you know about an incident at the Mebane's WWTP. Last Sunday, March 1, 2015 our on -call operator received a high influent flow alarm from the plant. When he came in to check it the influent flow was peaking at around 4.5 MG. The high flow was due to ice and snow melting and entering the City's collection system. One of our clarifiers was overloaded for a short period due to the high flow coupled with one clarifier being temporarily off-line for scheduled gear drive rehabilitation. We were able to divert half of the flow into our spare aeration basin which eliminated the overload conditions. During the high flow the clarifier lost some suspended solids. Within an hour the plant was back to normal as we continued diverting half of the flow to the spare basin overnight. The results are not in but we will probably have an elevated effluent composite BOD result for that 24 hour period. If you have any questions or need additional information please contact me. Thanks, Dennis Dennis J. Hodge Wastewater Director Ne6wte Pasitivelg Charming Water Resources 106 E Washington Street Mebane, NC 27302 19 336-906-5583 www.cityofinebane.com E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. "9t ra &4 4 9" 9°1ro"""4 Oros ae &0 4 wx &x*&o yc Aft in rfiwom ifm doo da wwN ra. " q, 7490" DMR Review Record Facility: MQ���i I lP (,L( Permit No.: ( y � q Pipe No.: MonthNear: �C Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit Action Weekly/Daily Violations Date Parameter Permit Limit Limit To DMR Value % Over Limit Action 12 ,-7, 5 au q. 19 Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Action Violations/Staff Remarks: - IV-) C�eZj tr, �a s-&vey L6-,�-Dcj, - i' (� �� e : L C� � 1eJ � c�-� i t' 6 b-kv"r LJJ�, r" s c1. supervisor Remarks: Completed by:y ���y �, cam" `�F� Date: Assistant Regional Supervisor Sign Off: v "' "" Date: Lei y Regional Supervisor Sign Off: Date: EFFLUENT t NPDES PERMIT NO. NC 0021474 DISCHARGE NO: 1 MONTH September YEAR 2014 FACILITY NAME MEBANE WASTEWATER TREATMENT FACILITY CLASS 4 COUNTY ALAMANCE OPERATOR IN RESPONSIBLE CHARGE (ORC) Dennis Hodge GRADE 4 PHONE 919-563-6141 CERTIFIED LABORATORIES (1) MEBANE (2) MERITECH INC. (3) R&A LABORATORY, Inc. CHECK BOX IF ORC HAS CHANGED () PERSONS COLLECTING SAMPLES 0PERAT11 j ... L Mail ORIGINAL and ONE COPY to: ATTN: Central Files NC DENR/DIV OF WATER QUALITY WATER QUALITY SECTION 1617 MAIL SERVICE CENTER NOV RALEIGH, NC 27699 - 1617 u 411110 NOV 12 2M OA &""� Aq -,1S ,W ;G (SIGN OF OPEATOR IN RESPONSIBLE CHARGE) DATE ' BY THIS SIG ATURE I CERTIFY THAT THIS REPORT IS ACCURATE AND COMPLETE TO THE BEST OF MY KNOWLEDGE 50050 00010 00400 50060 00310 00610 100530 31616 00300 00600 00665 01034 01042 71900 D A T E Oper Arrival Time Oper Time On Site ORC On Site FLOW Temp Celsius Daily pH Daily Resd CL Daily BOD5 20 C Daily NH3 2/wk TSS 2/wk FECAL COLI (geo mean) D.O. Daily Total Nitrogen 1/wk Total P 1/wk Total Cr NA Total Cu Hg Eff Inf X_ Daily Rate Hrs Hrs Y/N MGD C SU UG/L MG/L MG/L MG/L #/100ML MG/L MG/L MG/L j UG/L UG/L UG/L 1 1.007 2 645 10.6 Y 1.040 25 7.3 <15 28.0 11.00 >2420 7.8 3 6251 10.8 Yj 1.044 25 7.1 <15 8.1 2.20 4.3 <1.0 7.8 7.28 1.24 4 6301 10.7 YJ 1.109 25 7.2 <15 3.3 0.20 2 7.8 0.19 5 6201 10.8 131 1.129 251 7.2 <15 2.9 < .1 <2.5 10 7.8 0.13 6 1 1 1.153 3.6 <.1 7 1 1 0.995 8 6351 10.7 YJ 1.041 24 7.2 ' <15 3.5 0.40 86 8.0 0.24 9 1 6301 10.7 YJ 1.341 23 7.2 <15 3.1 0.50 <2.5 6 8.0 0.23 CENTRAL 101 6271 10.7 YJ 1.124 23 7.3 <15 < 2.01 0.10 15 7.91 2.53 0.171 DV' R SECTI 11 650 10.5 YJ 1.101 23 7.3 <15 2.61 0.30 <2.5 25 8.01 0.30 12 615 10.9 BI 1.127 24 7.3 <15 2.7 0.30 10 7.71 0.29 13 1.147 14 1.043 15 7001 10.0 Y 1.043 22 7.3 <15 3.4 0.70 <1.0 8.2 0.29 16 630;10. Y 1.084 22 7.3 <15 3.4 0.30 <5.0 2 8.1 0.36 17 625 Y 1.120 23 7.3 <15 3.1 0.50 12 8.1 1.05 0.39 18 615 B 1.091 23 7.3 <15 3.7 0.40 <5.0 4 8.0 0.64 19 610 B 1.104 22 7.3 <15 3.8 0.30 6 8.1 0.38 20 1.055 21 1.043 22 23 645 6301 6 10.7 Y Y 1.064 1.068 22 21 7.3 7.3 <15 <15 4.1 5.21 1.00 1.00 <5.0 1 2 8.1 8.3 1.63 1.70 N.0 `�� 24 630 10.71 Y 1.094 20 7.2 <15 < 2.0 0.40 3 8.4 3.48 1.64 25 620 10.8 B. 1.271 21 7.1 <15 2.9 1.60 <5.0 10 8.2 1.52 26 620 10.8 B 1.130 21 7.2 <15 3.2 0.50 2 8.1 1.25 Redo al Office 27 1.108 28 1.080 29 650 10.5 Y 1.021 21 7.2 <15 4.7 2.10 <1.0 7.9 1.35 30 635 10.7 Y 1.191 22 7.1 <15 < 2.0 1.10 <2.5 1 7.8 0.40 31 AVERAGE 1.099 23 0 4.3 1.132 0.47 6 8.0 3.59 0.72 MAXIMUM 1.341 25 7.3 <15 28.0 11.00 4.25 >2420 8.4 7.28 1.70 MINIMUM 0.995 20 7.1 <15 < 2.0 < .1 <2.5 <1.0 7.7 1.05 0.13 TOTAL FLOW 32.968 Grab Grab Grab Comp Comp Comp Grab Grab Comp Comp Comp Comp Grab Monthly Limit Apr - Oct 2.5 6-9 1 17 5 2 30 200 > 6.0 Monthly Limit Nov- Mal10 1 4 '4 =S N MONITORING REPORT(MR) VIOLATIONS for: Report Date: 12/08/14 Page: 1 of 2 1 PERMIT: NCO021474 FACILITY: City of Mebane - Mebane WWTP COUNTY: Alamance REGION: Winston-Salem Limit Violation MONITORING OUTFALU LOCATION PARAMETER VIOLATION FREQUENC UNIT OF LIMIT CALCULATED VALUE % VIOLATION TYPE VIOLATION ACTION REPORT PPI DATE MEASURE Over 04 -2014 001 Effluent BOD, 5-Day (20 Deg. C) - 04/12/14 5 X week mg/I 7.5 8.28 10.4 Weekly Average Proceed to NOD Concentration Exceeded 08 _ 2013 001 Effluent Chlorine, Total Residual 08/01/13 5 X week ug/I 17 38 123.5 Daily Maximum No Action, BPJ Exceeded 08 _ 2013 001 Effluent Chlorine, Total Residual 08/02/13 5 X week ug/I 17 41 141.2 Daily Maximum No Action, BPJ Exceeded 08 -2013 001 Effluent Chlorine, Total Residual 08/06/13 5 X week ug/I 17 34 100 Daily Maximum No Action, BPJ Exceeded 08 -2013 001 Effluent Chlorine, Total Residual 08/12/13 5 X week ug/I 17 38 123.5 Daily Maximum No Action, BPJ Exceeded 08 - 2013 001 Effluent Chlorine, Total Residual 08/13/13 5 X week ug/I 17 41 141.2 Daily Maximum No Action, BPJ Exceeded 08 - 2013 001 Effluent Chlorine, Total Residual 08/15/13 5 X week ug/I 17 34 100 Daily Maximum No Action, BPJ Exceeded 08 - 2013 001 Effluent Chlorine, Total Residual 08/19/13 5 X week ug/I 17 44 158.8 Daily Maximum No Action, BPJ Exceeded 08 - 2013 001 Effluent Chlorine, Total Residual 08/27/13 5 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ Exceeded 11 _ 2013 001 Effluent Chlorine, Total Residual 11/14/13 5 X week ug/I 17 44 158.8 Daily Maximum No Action, BPJ Exceeded 01 _2014 001 Effluent Chlorine, Total Residual 01/06/14 5 X week ug/I 17 47 176.5 Daily Maximum No Action, BPJ Exceeded 01 _2014 001 Effluent Chlorine, Total Residual 01/08/14 5 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ Exceeded 02 _ 2014 001 Effluent Chlorine, Total Residual 02/20/14 5 X week ug/I 17 44 158.8 Daily Maximum No Action, BPJ Exceeded 03 _ 2014 001 Effluent Chlorine, Total Residual 03/10/14 5 X week ug/I 17 46 170.6 Daily Maximum No Action, BPJ Exceeded MONITORING REPORT(MR) VIOLATIONS for: Report Date: 12/08/14 Page: 2 of 2 04 _ 2014 001 Effluent Chlorine, Total Residual 04/30/14 5 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ Exceeded 01 _2014 001 Effluent Coliform, Fecal MF, M-FC 01/04/14 5 X week #/100ml 400 489.45 22.4 Weekly Geometric Mean Proceed to NOV Broth,44.5C Exceeded 7E` rg �. V00 j Chartered in 1 RR 1 City of Mebane Wastewater Collection and Treatment Facility For the Fiscal Year July 1, 2013 - June 30, 2014 iAw 0Qa U co Cbarnered ie zRal ' City of Mebane Wastewater Collection and Treatment Facility For the Fiscal Year July 1, 2013 — June 30, 2014 Introduction This report is produced in compliance with House Bill 1160 passed by the General Assembly of the State of North Carolina requiring that all entities that own or operate wastewater collection and treatment systems make an Annual Report available to their customers. This report must include information regarding how well the system operated, what violations occurred, and other pertinent information. This report complies with these requirements. The City of Mebane operates a wastewater treatment facility and a sewage collection system that collects and transports the sewage to the facility. Following are the professionals designated by the state as the "Operator in Responsible Charge" (ORC) of the respective systems and permits for the systems: City of Mebane Wastewater Treatment Facility 635 Corregidor Road Phone (919) 563-6141 NPDES Permit No. - NCO021474 Land Application of Residual Solids (503) Permit No. - W00004033 Operator in Responsible Charge (ORC) — Dennis J. Hodge Mebane Public Works Sewage Collection System 636 Corregidor Road Phone (919) 563-3401 Collection System Permit No. W00500081 Operator in Responsible Charge (ORC) — Charlie Wayne Pore We certify under penalty of law that this report is complete and accurate to the best of our knowledge. Copies Will be available at the Wastewater Treatment plant, Public Works Building, City Hall, and on the City of Mebane website, www.citvoftnebane.com/. 0Qa U co Cbarnered ie zRal ' City of Mebane Wastewater Collection and Treatment Facility For the Fiscal Year July 1, 2013 — June 30, 2014 Introduction This report is produced in compliance with House Bill 1160 passed by the General Assembly of the State of North Carolina requiring that all entities that own or operate wastewater collection and treatment systems make an Annual Report available to their customers. This report must include information regarding how well the system operated, what violations occurred, and other pertinent information. This report complies with these requirements. The City of Mebane operates a wastewater treatment facility and a sewage collection system that collects and transports the sewage to the facility. Following are the professionals designated by the state as the "Operator in Responsible Charge" (ORC) of the respective systems and permits for the systems: City of Mebane Wastewater Treatment Facility 635 Corregidor Road Phone (919) 563-6141 NPDES Permit No. - NCO021474 Land Application of Residual Solids (503) Permit No. - W00004033 Operator in Responsible Charge (ORC) — Dennis J. Hodge Mebane Public Works Sewage Collection System 636 Corregidor Road Phone (919) 563-3401 Collection System Permit No. W00500081 Operator in Responsible Charge (ORC) — Charlie Wayne Pore We certify under penalty of law that this report is complete and accurate to the best of our knowledge. Copies Will be available at the Wastewater Treatment plant, Public Works Building, City Hall, and on the City of Mebane website, www.citvoftnebane.com/. City of Mebane Annual Report - Page 2 System Overview Every day an average of one million gallons of sewage is generated in our homes, commercial establishments, and industries that must be collected, transported, and treated to very stringent standards before it is released back into our environment through our waterways. This service is provided by the City and is funded almost entirely from the user charges that are paid monthly by our customers. The sewage collection and wastewater treatment facility of the City of Mebane begins with over 4,500 connections that serve homes, commercial establishments, and industries. Nearly all of the sewage or wastewater that is generated by customers flows by gravity through sewers that range from 6 to 16 inches in diameter. Mebane operates over 76 miles of these gravity sewer lines. During this reporting period, over 4.0 miles of these lines were cleaned and inspected. As the lines leave neighborhoods they increase in size to accommodate the flows that are collected from the many areas that are served. These sewers generally follow terrain to take advantage of gravity flow but at certain points pumping stations are used to transfer the flow to different basins. The City currently operates 15 pumping stations that range in capacity from 13 to 2000 gallons per minute. The purpose of the collection system is to transport the wastewater to the wastewater treatment facility so it can be processed and returned to our waterways with minimal environmental impact. The wastewater treatment facility is permitted to process up to 2.5 million gallons of wastewater per day. The wastewater treatment facility is complex, using physical, chemical, and biological processes to treat the wastewater. The wastewater is screened to remove large suspended materials, but the heart of the plant is a biological process that uses bacterial cultures to remove most of the suspended and dissolved wastes that are produced within the City. This biological, activated sludge process is sensitive to temperature, high flows produced by rainfall leaking into sewers, and toxic discharges that can be produced by industries or even homes. This sensitivity makes the wastewater facility susceptible to process upsets that can result in exceeding limitations permitted by regulatory authorities. The permitting of treated wastewater discharges is based on a "7 0 10" stream flow, or the lowest seven day stream flow expected every ten years. However permit limits that are issued to protect the stream at low flow (less assimilation), apply 24 hours per day and 365 days per year. Since Mebane's limits are calculated for discharging to a small stream, our limitations are extremely stringent North Carolina has some of the most strict stream standards in the country. Mebane WWTP discharge constitutes over 90% of the stream only at the lowest stream -flows. However, when periods of rain create high stream flows and make treatment plant operations difficult, the treatment facility must continue to be compliant with dry weather limitations. The City of Mebane's treatment plant operates under a NPDES permit, or National Pollutant Discharge Elimination System permit. The NPDES permit includes monitoring requirements and discharge limitations, some of which vary with seasons and have different maximums for daily values, weekly averages, monthly averages, and quarterly averages. Some limitations protect streams from oxygen depletion, such as biochemical oxygen demand (BOD) and ammonia -nitrogen (which exerts oxygen demand over a delayed yet prolonged basis). Some limitations are to protect aquatic life in the receiving stream, such as metals like cadmium or mercury or other pollutants like fluoride or chlorine. Since aquatic life is more sensitive than humans to some pollutants, some limitations are as low as 12 parts per trillion' and in many cases are lower than drinking water standards. To help comprehend how small one part per trillion is: One part per trillion corresponds to one minute in 2,000,000 years, or a single penny in $10,000,000,000. City of Mebane Annual Report — Page 3 Compliance with the permit requires that our laboratory must conduct over 4,000 tests per year all of which must meet the NPDES permit requirements. To accidentally drop a sample or not analyze it within a specified period can result in a violation. There are some pollutants such as fluoride, mercury, and cadmium that the operators of the wastewater treatment facility have no control over and can only be regulated through controlling the discharges of industry and households. There are also times that maintenance on major equipment needs to be performed that can cause exceedances as well. During the 2013-2014 fiscal year, the Water Resources Department treated over 489 million gallons and returned it to our streams. We are proud of the outstanding performance of the facility that was made possible by the dedicated efforts of the professionals who operate, maintain, and conduct tests for the facility. During this period the wastewater treatment facility experienced two exceedances of the NPDES permit. These were reported to the State of North Carolina in compliance with reporting regulations and are summarized in Table 1. All exceedances were addressed as expeditiously as possible and the situations causing them were addressed and rectified immediately. There were no environmental impacts associated with these exceedances. Wastewater flow amounts are summarized in Table 2. Table 1: Wastewater Treatment Facility Date Parameter Number of Exceedances Exceedance Type December 2013 Fecal Coliform One Weekly Average April 2014 BOD One Weekly Average Table 2: Wastewater Flows Summary of Wastewater Flows MG (Million Gallons) Jui 1, 2012 — June 30, 2013 Average MG per day Total MG July 1.346 41.733 August 1.454 45.088 September 1.246 37.371 October 1.225 37.973 November 1.133 33.988 December 1.362 42.225 January 1.440 44.628 February 1.438 40.263 March 1.586 49.178 April 1.444 43.305 May 1.274 39.500 June 1.127 33.819 Total Year MG 489.072 Average Da MG 1.340 Collection System Performance The City of Mebane operates a sewage collection system comprised of 76 miles of gravity line, over 700 manholes, 15 pump stations, and over 12 miles of pressurized sewage force main. If sewage escapes from the collection system for whatever reason and reaches a surface water body in an amount exceeding 1,000 gallons, it must be reported to the news media. In addition, all spills of any volume reaching a water body must be reported to the State. A list of sewage spills is included in Table 3. City of Mebane Annual report — Page 4 Collection system sewage spills, known as sanitary sewer overflows (SSO) can occur for many reasons. Tree roots can enter sewer lines or foreign objects can be dropped into manholes or sewers causing obstructions. Rainwater can also find its way into sewers overloading lines and pump stations. In addition, pump stations can fail for mechanical or electrical reasons. Fats, Oils, and Grease (FOG) from households, restaurants, and commercial establishments can also cause obstructions in the sewer system resulting in SSOs. A byproduct of cooking, FOG comes from meat, fats, lard, oil, shortening, butter, margarine, food scraps, sauces, and dairy products. When washed down the drain, FOG sticks to the insides of sewer pipes. Over time, FOG can build-up, block entire pipes, and lead to serious problems. To prevent any undue introduction of FOG into the wastewater collection system, the City of Mebane implements a FOG Policy designed to educate and enforce the proper disposal of FOG within the City. The FOG policy is intended for all customers (residents, restaurants, and commercial establishments) that discharge wastewater into the City's sanitary sewer with the aim of preventing grease related SSOs. Within the FOG Policy, food service establishments are required to install and properly maintain an appropriately sized grease trap or interceptor. While food service establishments typically deal with larger volumes of FOG than residents, everyone must do their part to prevent the introduction of FOG into the sewer system. To learn more about FOG, its impacts on the sewer system, and its proper disposal, please download the City's FOG Factsheet at www.cityofinebane.com/wastewater.asp. Table 3: Collection System Sewage Spills Date Location Approximate Gallons Probable Cause 11/21/13 Manhole at South First & West Roosevelt 325 Grease 12/27/13 Spring Forest at Deerfield 250 Grease 6M14 Fieldstone PS' 1,350 PS; Equipment Failure 'PS — Pumping Station Summary The City of Mebane is proud given that the age of our treatment facility and collection system our permit exceedances have been minimal. Circumstances, such as weather and vandalism, are beyond the control of collection system and wastewater treatment facility staff. Therefore, despite the dedicated efforts of these individuals, it can often be difficult to avoid spills and exceedances of the NPDES permit. The City's ultimate goal is to have no permit exceedances or sewage spills. We want to provide the best possible service to our customers while being fiscally responsible and good stewards of our environment. If more information is desired please contact our staff at 919-304-9215. 1 O- Chartered in i SF m City of Mebane Wastewater Collection and Treatment Facility For the Fiscal Year July 1, 2013 - June 30, 2014 City of Mebane Wastewater Treatment Facility 635 Corregidor Road, Mebane, NC Phone (919) 304-9215 NPDES Permit No. NC0021474 Residuals Application Permit No. WO0004033 Operator in Responsible Charge (ORC) — Dennis Hodge Mebane Wastewater Collection System 636 Corregidor Road Phone (919) 563-3401 Collection System Permit No. W00500081 Operator in Responsible Charge (ORC) — Charlie Wayne Pore I certify, under penalty of law, that this report is complete and accurate to the best of my knowledge. I further certify that this report has been made available to the users or customers of the narrlpd systems and that those users have been notified of its availability. )ennik J. Hodge 3stew ter Director City of Mebane August 28, 2014 Date FMA NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor August 5, 2014 Mr. David Cheek, City Manager City of Mebane 106 E. Washington Street Mebane, North Carolina 27302 Subject: Compliance Evaluation Inspection NPDES Permit No. NCO021474 City of Mebane Wastewater Treatment Plant Alamance County Dear Mr. Cheek: John E. Skvada, III Secretary Jenny Graznak of this office performed a Compliance Evaluation Inspection at the Mebane Wastewater Treatment Plant in Alamance County on July 31, 2014. Dennis Hodge, Operator in Responsible Charge (ORC), was present for the inspection. This type of inspection consists of two basic parts: an in -office review of facility files and self -monitoring data and an on -site inspection of the facility. This particular inspection evaluated nine (9) areas, and observations from each area are addressed below: 1. Permit The permit became effective on July 1, 2014 and will expire on May 31, 2019. The facility had a copy of the current permit available on site during the inspection. 2. Self -Monitoring Program A review of the monthly Discharge Monitoring Reports (DMRs) for the period of June 2013 through May 2014 showed that all parameters were sampled and analyzed per the requirements of the permit. Limit violations were noted on the DMRs for January and April 2014. These violations were addressed in previous correspondence from this office. 3. Laboratory The plant's on -site laboratory (#138) is certified for the following permit parameters: Total Residual Chlorine, Fecal Coliform, Conductivity, Dissolved Oxygen, Total Phosphorus, pH, Total Suspended Solids, and Temperature. All lab data, chain of custody forms, confirmation of meter calibrations, and thermometer verification were available during the, inspection. Amy Varinoski is the Lab Supervisor, and Amanda Hill is the Lab Technician. R &, A Laboratories analyzes Metals and BOD, while Meritech, Inc. analyzes Nutrients plus Ammonia, and Chronic Toxicity. 4. Flow Measurement Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated quarterly by Instrument Specialists, Inc. Verification of the last calibration event, which occurred on June 30, 2014, was available during the inspection. 585 Waughtown Street, Winston-Salem, North Carolina 27107 Phone: 336-771-50001 Internet: www.nodenr.gov An Equal Opportunity t Affirmative Action Employer — Made in part by recycled paper 5. Sludge Handling and Disposal The plant has two aerobic digesters. Approximately four times per year, Synagro brings a press on site to create sludge cakes, which are then transported to the McGill compost facility in New Hill, North Carolina. The land application permit will likely be rescinded since the facility has not land applied residuals since 2009 and has no current plans to do so. Application fields have been transferred to Burlington and Durham programs. 6.Operations & Maintenance Anthony Bowes and Amy Varinoski are Back -Up ORCs. Operation and maintenance at the facility appear to be excellent. The plant operates a preventative maintenance database via Hach JOB Cal. Maintenance staff issues work orders once per month and more frequently for repairs. A SCADA system is used to monitor some operations at the plant, such as process control parameters. Mr. Hodge can access this information from this iPhone. Since an ice storm in March 2014, the facility has been renting a generator from Gregory Poole to keep on the premises in case of power failure. The generator is exercised once per week. 7. Facility Site Review Plant influent is screened and metered for reporting purposes. The plant includes two large aerations basins, which were both in use at the time of inspection. The plant also includes three clarifiers, a new tertiary filtration system (installed December 2013), chlorination, and dechlorination. A small building contains the tanks of liquid hypochlorite and liquid sodium bisulfate. The new filtration system is called the Aqua Mini Disk with Cloth Media Filter designed by Aqua -Aerobic Systems, Inc. Only two of its four basins were in service during the inspection. 8. Records/Reports The DMRs, files, operators' logs, and lab data are maintained according to the permit. A copy of this data was available for review during the inspection. Plant data and. records are very well organized and maintained. 9. Effluent/Receiving Waters The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. The facility was found to be in compliance with NPDES Permit No. NC0021474. We appreciate the City's efforts to comply with the requirements of this permit. Please refer to the attached report for specific details from the inspection. If you have any questions concerning this report, please contact Ms. Graznak or me at (336) 771-5000. Sincerely, Sherri V. Knight, P.E., Assistant Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDENR cc: Central Files WSRO United Stales Ernironnwtal Protection Agency Form Approved. IrPA WaM gl°n, D.C. 20460 OMB No. 204041057 Water Compliance Inspection Report Approval expires 831-98 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 1 NCO021474 111 12 14/07/31 17 18 ICI 19 I s I 20 21111111 11II11111111111111 1 111111 11111111111 r Inspection Work Days Facility Sep Mondmirg Evaluation Rating 81 QA Reserved— 67 70Ia I 71 L� I 72 L w i 731 1 I74 76 LJ LJ 1 1 I 80 Section B:FacilityData 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 Numbert 09:OOAM 14107/31 14/07/01 Mebane WWTP 635 Corregidor Rd Exit TimelDate Permit Expiration Date Mebane NC 27302 12:30PM 14/07/31 19105/31 Name(s) of Onsite Representative(syTitles(syPhone and Fax Number(s) Other Facility Data I# David S Cheek/clty mgr/919-563-5901 / Dennis James HodgWORC/919-304-9215/ Name, Address of Responsible Official/Title/Phone and Fax Number Linda R Hoit,106 E Washington St Mebane NC 27302//919-569-614 V Contacted No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit N Flow Measurement Operations & MaintenancE Records(Reports Self-Mongoring Program 0 Sludge Handling Disposal 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 Slgnature(s) or Inspector(s) Agency/OfAce/Phone and Fax Numbers Date Jennifer1F Graznak , WSRO WQ//336-771-5000/ Signature of Management 0 A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 35603 (Rev 9-94) Previous editions are obsolete. J Page# NPDES yrhno/day rnspecOm Type 31 NCO021474 I11 12 1=7/81 117 18 Ici J (Cc Section R Summary of Rnding/Comments (Attach additional sheets of narrative and checklists as necessary) 1. Permit The permit became effective on July 1, 2014 and will expire on May 31, 2019. The facility had a copy of the current permit available on site during the inspection. 2. Self -Monitoring Program A review of the monthly Discharge Monitoring Reports (DMRs) for the period of June 2013 through May 2014 showed that all parameters were sampled and analyzed per the requirements of the permit Limit violations were noted on the DMRs for January and April 2014. These violations were addressed in previous correspondence from this office. 3. Laboratory The planfs on -site laboratory (#138) is certified for the following permit parameters: Total Residual Chlorine, Fecal Coliform, Conductivity, Dissolved Oxygen, Total Phosphorus, pH, Total Suspended Solids, and Temperature. All lab data, chain of custody forms, confirmation of meter calibrations, and thermometer verification were available during the inspection. Amy Varinoski is the Lab Supervisor, and Amanda Hill is. the Lab Technician. R & A Laboratories analyzes Metals and BOD, while Merdech, Inc. analyzes Nutrients plus Ammonia, and Chronic Toxicity. 4. Flow Measurement Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated quarterly by Instrument Specialists, Inc. Verification of the last calibration event, which occurred on June 30, 2014, was available during the inspection. 5. Sludge Handling and Disposal The plant has two aerobic digesters. Approximately four times per year, Synagro brings a portable belt press on site to create sludge cakes, which are then transported to the McGill compost facility in New Hill, North Carolina. The land application permit will likely be rescinded since the facility has not land applied residuals since 2009 and has no current plans to do so. Application fields have been transferred to Burlington and Durham programs. 6.Operations & Maintenance Anthony Bowes and Amy Varinoski are Back -Up ORCs. Operation and maintenance at the facility appear to be excellent. The plant operates a preventative maintenance database via Hach JOB Cal. Maintenance staff issues work orders once per month and more frequently for repairs. A SCADA system is used to monitor some operations at the plant, such as process control parameters. Mr. Hodges can access this information from this iPhone. Since an ice storm in March 2014, the facility has been renting a generator from Gregory Poole to keep on the premises in case of power failure. The generator is exercised once per week. 7. Facility Site Review Plant influent is screened and metered for reporting purposes. The plant includes two large aerations basins, which were both in use at the time of inspection. The plant also includes three clarifiers, a new tertiary filtration system (installed December 2013), chlorination, and dechlorination. A mall building contains the tanks of liquid hypochlorite and liquid sodium bisulfate. The new filtration system is called the l@ua Mini Disk with Cloth Media Filter designed by Aqua -Aerobic Systems, Inc. Only two of its four basins -*We lit service during tho41.nspection. 8. Records/Reports The DMRs, files, operators' logs, and lab data are maintained according to the permit. A copy of this Page# ► Permit NCO021474 Inspection Dab: 07/31/2014 owner - Facility: Mebane WWTP inspection Type: Compliance Evaluation data was available for review during the inspection. Plant data and records are very well organized and maintained. 9. Effluent/Receiving Waters The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. in -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. Lee Page!# Permit: NCO021474 inspoclan Data: 07/31/2014 owner - Fad tp: Mebane WWTP Inspection Typo: 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: Operation and maintenance at the facility appear to be excellent. 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 br 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 ❑ ❑ E ❑ Comment: The permit became effective on July 1. 2014 and will expire on May 31, 2019. The facility had a copy of the current permit available on site during the inspection Record Keeping Yes No NA WE Are records kept and maintained as required by the permit? ❑ ❑ ❑ Is all required information readily available, complete and current? ❑ 011, Are all records maintained for 3 years (lab, reg. required 5 years)? 0 ❑ 110 Are analytical results consistent with data reported on DMRs? 0 ❑ ❑ ❑ Is the chain -of -custody complete? ■ ❑ ❑ ❑ Dates, tines and location of sampling Naas 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? No 130 (If the facility Is = or > 5 MGD pwmttted flow) Do they operate 2417 with a certified operator ❑ ❑ E ❑ on each shift? is the ORC visitation log available and current? 0131111 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# 4 NCO021474 Owner-FadUty: Mebane wwTP 07/3112014 inspection Vim: Compllance Evaluation ina Yes No NA NE Facility has copy of previous year's Annual Report on file for review? Comment: Effluent Pipe 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? Comment: The effluent appeared clear with no visible solids. Flow Measurement - Influent # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? of units are separated) Does the chart recorder match the flow meter? Yes No NA NE Yes No NA NE Comment: Verification of the last calibration event which occurred on June 30 2014 was available during the inspection. Aerobic Diaester Is the capacity adequate? Yes No NA NE Comment: Verification of the last calibration event which occurred on June 30 2014 was available during the inspection. Aerobic Diaester Is the capacity adequate? ■ ❑ ❑ ❑ Is the mixing adequate? M ❑ ❑ ❑ Is the site tree of excessive foaming in the tank? M ❑ ❑ ❑ # is the odor acceptable? 0000 # Is tankage available for properly waste sludge? 0000 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? M El ❑ ❑ is the unit in good condition? Page# 5 Permit: NCO021474 Inspection Date: 07/31/2014 Bar Screens Comment: Secondary Clarifier Is the clarifier free of black and odorous wastewater? Owner - Facility: Mebane WWTP Inspection "type: Compliance Evaluation 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: Aeration Basins Mode of operation Type of aeration system 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/I) Yes No NA NE Yes No NA NE Surface ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Comment; Facility maintains DO less than 1.0 mg/I in aeration basins for denitnfication project. Filtration (High Rate Tertiary) Type of operation. Is the filter media present? Is the filter surface free of clogging? Is the filter free of growth? Yes No NA NE Up flow ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ❑ Page*# 6 Pr Permit: NCO021474 Inspection Daft: 07/31/2014 owner - Facigty: Mebane WWTP Inspection type: Compliance Evaluation Filtration (High Rate Tertiary) Yes No NA NE Is the air scour operational? M ❑ ❑ ❑ Is the scouring acceptable? 0 ❑ ❑ ❑ Is the clear well free of excessive solids and filter media? 0 ❑ ❑ ❑ Comment: The new filtration system is called the Aqua Mini Disk with Cloth Media Filter designed by Aqua Aerobic Systems, Inc. Installed December 2013 De -chlorination Yes No NA NE Type of system ? Liquid 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: Liquid sodium bisulfate Are tablet de -chlorinators operational? ❑ ❑ ❑ Number of tubes in use? Comment: - Standby Power Yes No NA NE Is automatically activated standby power available? 0 ❑ ❑ ❑ is the generator tested by Interrupting primary power source? 0 ❑ ❑ ❑ Is the generator tested under load? M ❑ ❑ ❑ Was generator tested & operational during the Inspection? ❑0 ❑ ❑ 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? 0 ❑ ❑ ❑ Is the generator fuel level monitored? 0 ❑ ❑ ❑ Comment: Since an ice storm in March 2014 the facility has been renting a generator from Grecory Poole to keep on the premises in case of Dower failure. A new -generator will likely be purchased for the facility in the next year. Disinfection -Liquid Yes No NA NE is there adequate reserve supply of disinfectant? 0 ❑ 110 (Sodium Hypochlorite) Is purrs feed system operational? 00011 Is bulk storage tank containment area adequate? (free of leaks/open drains) 0 ❑ ❑ ❑ is the level of chlorine residual acceptable? 001111 Pager# 7 Permit-. NCO021474 Inspection Dail: 07/31/2014 Disinfection -Liquid Is the contact chamber free of growth, or sludge buildup? Is there chlorine residual prior to de -chlorination? Comment: Owner - Facility: Mebane W WTP inspection Type: Compliance Evaluation Effluent SamWina 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)? Comment: Thermometer inside refirneration unit read 4 degrees. Upstream / Downstream Samplina Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? Comment: Yes No NA NE ❑❑❑■ ❑ ❑ ❑ Yes No NA NE ■ ■ ■ 00110 ■ ■ ■ ■ ■ ■ 01100 ■ ■ ■ Yes No NA NE ■❑❑❑ Page# 8 MONITORING REPORT(MR) VIOLATIONS for: Report Date: 07/30/14 Page 1 of 2 Permit i ,r>i NlRs Between 6 and ,'01 l Region Violation Category,ear Program Category Facility Name ` - Param Name r;, County. Subbasm tit Violation Action s° Major Minor PERMIT: NC0021414 FACILITY: City of Mebane - Mebane WWTP COUNTY: Atamance REGION: Winston-Salem Limit Violation MONI I OHING OU I FALU LOCATION NAHAMILItH VIOLA I ION rHtflutivC UNIT OF UMiI CALCULATED VALUE % Over VIOLATION TYPE VIOLA710NACTION HtNOHI 04 - 2014 PH 001 Effluent BOO, 5-Day (20 Deg. C) - DAIL 04/12/14 5 X week MEASURE mg/l 7.5 8.28 10.4 Weekly Average Proceed DNOD Concentration Exceeded 07-2013 001 Effluent Chlorine, Total Residual 07/18/13 5 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ Exceeded 07 -2013 001 Effluent Chlorine, Total Residual 07/23/13 5 X week ug/I 17 34 100 Daily Maximum No Action, BPJ Exceeded 07 - 2013 001 Effluent Chlorine, Total Residual 07/29/13 5 X week ug/I 17 47 176.5 Daily Maximum No Action, BPJ Exceeded 08-2013 001 Effluent Chlorine, Total Residual 08101/13 5 X week ug/I 17 38 123.5 Daily Maximum No Action, BPJ Exceeded 08 -2013 001 Effluent Chlorine, Total Residual 08/02/13 5 X week ug/I 17 41 141.2 Daily Maximum No Action, BPJ Exceeded 08-2013 001 Effluent Chlorine, Total Residual 08/06/13 5 X week ug/I 17 34 100 Daily Maximum No Action, BPJ Exceeded 08 - 2013 001 Effluent Chlorine, Total Residual 08112/13 5 X week ug/I 17 38 123.5 Daily Maximum No Action, BPJ Exceeded 08-2013 001 Effluent Chlorine, Total Residual 08/13/13 5 X week ug/I 17 41 141.2 Daily Maximum No Action, BPJ Exceeded 08 - 2013 001 Effluent Chlorine, Total Residual 08/15/13 5 X week ug/I 17 34 100 Daily Maximum No Action, BPJ Exceeded 08 - 2013 001 Effluent Chlorine, Total Residual 08/19/13 5 X week ug/I 17 44 158.8 Daily Maximum No Action, BPJ Exceeded 08-2013 001 Effluent Chlorine, Total Residual 08/27/13 5 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ Exceeded 11 - 2013 001 Effluent Chlorine, Total Residual 11/14/13 5 X week ug/I 17 44 158.8 Daily Maximum No Action, 0PJ Exceeded 01 -2014 001 Effluent Chlorine, Total Residual 01/06114 5 X week ug/I 17 47 176.5 Daily Maximum No Action, BPJ Exceeded MONITORING REPORT(MR) VIOLATIONS for: Permit MRs Between 6 - and 5 Region: % Facility Name Param Name;, County:}� Major Minor. 01.2014 001 Effluent Chlorine, Total Residual 0101/14 5 X week 02 _ 2014 001 Effluent Chlorine, Total Residual 02/20/14 5 X week 03 - 2014 001 Effluent Chlorine, Total Residual 03/10/14 5 X week 04 - 2014 001 Effluent Chlorine, Total Residual 04/30/14 5 X week 01 _ 2014 001 Effluent Coliforrn, Fecal MF, M-FC 01/04/14 5 X week Broth,44.5C Report Date 07 30! 14 Page 2 of 2 Violation Category, :. ;t,,;:, Program Category.,*,,, 5ubbasin Violation Action- � lg/1 17 30 76.5 Dairy Maximum No Action, BPJ Exceeded ig/1 17 44 158.8 Daily Maximum No Action, BPJ Exceeded ig/1 17 46 170.6 Daily Maximum No Action, BPJ Exceeded jg/l 17 21 23.5 Daily Maximum No Action, BPJ 00ml 400 489.45 22.4 Exceeded Weekly Geometric Mean =Prceedt, Exceeded David S. Cheek City Manager Glendel Stephenson Mayor 106 East Washington Street Mebane, North Carolina 27302 (919) 563-5901 July 22, 2014 Wastewater Branch Water Quality Permitting Section Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Subject: Delegation of Signature Authority Mebane W WTP NPDES Number NCO021474 To Whom It May Concern: Council Ed Hooks, Mayor Pro Tem Tim Bradley Everette Greene Patty Philipps Jill Auditori By notice of this letter, I hereby delegate signatory authority to Dennis Hodge, Wastewater Director for all permit applications, discharge monitoring reports, and other information relating to the operations at the Mebane WWTP as required by all applicable federal, state, and local environmental agencies specifically with the requirements for signatory authority as specified in I SA NCAC 2B.0506. If you have any questions regarding this letter, please feel free to contact me at 919-563-5901. erely, avid S. Cheek City Manager cc: Winston-Salem Regional Office, Water Quality Permitting Section Chartered in 1881 SEWER OVERFLOW (SSO) 24 HOUR REPORT INCIDENT #: 2013 EPORTED: i \ R PORTED: �'o� AM REPORTED BY NAME:REPORTE M PHONE #:D BY �\� [ ©O J ` BY NAMEREPORT : \� FACILITY OR SYSTEM NAME: WW COLLECTION WQCs SYSTEM PERMIT#: NQt 4&s COUNTY: DATE SSO c p STARTED: v ` w\ TIME SSO STARTED: I <AM DATE SSO STOPPED: Jo TIME SSO STOPPED: PM LOCATION OF SSO: TOTAL \\ VOLUME: V VOLUME TO \ (� SUR. WATER: \ WATER BODY: ESTIMATED FISH KILL: PRIMARY CAUSE OF SSO (CHECK ONE): SEVERE NATURAL CONDITION I&I VANDALISM PIPE FAILURE (BREAK) GREASE DEBRIS IN LINE POWER OUTAGE ROOTS OTHER (EXPLAIN BELOW) EQUIPMENT FAILURE (PUMP STATION, ETC - EXPLAIN BELOW) REMARKS: pprppp, Mickey, Mike From: Mickey, Mike Sent: Monday, June 09, 2014 4:19 PM To: 'rmaness@cityofinebane.com' Subject: 24 Hour Report Info Attachments: SSO - 24 hour reporting info.pdf Ronnie — Per Greg Barts request, please find a copy of the 24 hour reporting form that we use to collect initial information on SSO's. In regards to the incident Greg reported today (overflow from containment box at WWTP), we consider any spill inside the WWTP fence to be a bypass and not an SSO. Bypasses are reported under the NPDES permit per Part II.E.4(b)(2). This event will not be entered into the SSO database. Holler back if any questions. Thanks, Mike. Mike Mickey Mike.MickevCui)NCDENR.eov NC Division of Water Resources 585 Waughtown Street Winston-Salem, NC 27107 Phone: (336) 771-4962 FAX: (336) 771-4630 E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. PPPPPPP, A&A NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor April 9, 2014 Mr. Dennis J. Hodge Wastewater Director City of Mebane 106 E. Washington St. Mebane, NC 27302 John E. Skvarla, III Secretary Subject: Draft NPDES Permit Renewal Permit No. NCO021474 Mebane WWTP Alamance County Facility Class IV Dear Mr. Hodge: Enclosed with this letter is a copy of the draft renewal permit for your facility which includes the revisions required by Senate Bill 810 and the recently adopted Senate Bill 515. This draft permit is different than the previous drafts sent to you in 2012. Please review the draft very carefully to ensure thorough understanding of the conditions and requirements it contains. The draft permit contains the following significant changes from your current permit: The City of Mebane's request for reduced sampling for NH3-N and TSS, from daily to twice per week, in accordance with the Reduction of Monitoring Frequencies in NPDES Permits for Exceptionally Performing Facilities (Oct. 22, 2012) was approved and the draft permit revised accordingly. These reduced frequencies will remain in effect so long as the City's facility continues to demonstrate exceptional treatment performance. The requirement to begin reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application has been added to your NPDES permit. [See Special Condition A. (11.)] For information on eDMR, registering for eDMR and obtaining an eDMR user account, please visit the following web page: http://portal.ncdenr.org/web/wq/admin/boWipu/edmr. For information on EPA's proposed NPDES Electronic Reporting Rule, please visit the following website: http://www2.epa. ova /compliance/proposed-npdes-electronic-reporting-rule. • The permit expiration date was changed to May 31, 2019 to allow five years before permit renewal. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Phone: 919-807-63001 Internet: www rlmaterquality.org An Equal Opportunity 1 Affirmative Action Employer — Made in part by recycled paper Mr. Dennis J. Hodge, Wastewater Director qqqq April 9, 2014 Page 2 of 3 • An annual discharge load limit of 40,225 pounds per year (lb/yr) for total nitrogen has been added to the permit in accordance with the Jordan Lake Nutrient Management Strategy rules. Footnote #10 in Special Condition A.(L) specifies an effective date of calendar year 2019 for the total nitrogen limit, consistent with Session Law 2013-395 (Senate Bill 515). • Effluent limitations and monitoring for Fluoride and Chloride were removed from the permit because no reasonable potential to violate surface Water Quality Standard's (WQS) for these parameters was found. • Effluent monitoring for Total Copper was removed from the permit because no reasonable potential to violate WQS's was found. • An evaluation of Total Zinc effluent data showed a reasonable potential to violate WQS. Since the WQS for Total Zinc is an action level standard, monitoring for Zinc was maintained in the permit, at a reduced frequency of quarterly to coincide with toxicity testing. • In accordance with the NPDES Implementation of the Statewide Mercury TMDL, five years of mercury data was evaluated. The annual averages were less than both the calculated Water Quality Based Effluent Limit and the Technology Based Effluent Limit. As a result, the Total Mercury limit was removed and monitoring was reduced to the three annual Effluent Pollutant Scans. • In accordance with the 2012 Statewide Mercury TMDL, the requirement to perform a Mercury Minimization Plan (MMP) was added to the permit. See MMP Special Condition A.(12.). Please note that the MMP shall be developed within 180 days of the NPDES Permit effective date. A sample MMP was developed through a stakeholder review process and has been placed on the Division website for guidance at: http://j2ortal.ncdenr.org/web/wq/swp/ps/npdes. • In accordance with Federal Regulations 40 CFR Part 122 a schedule of compliance containing annual milestones outlining the steps the City of Mebane will take to comply with the Jordan Lake Wastewater Discharge Rule was added under Special Condition A.(4.). • Special Condition A. (5.) Nitrogen Optimization has been updated to note the submission of the plan by the City of Mebane. • Some of the wording has changed in Special Condition A. (7), Chronic Toxicity Permit Limit, please review each paragraph carefully. • Special Condition A. (8.) on the Effluent Pollutant Scan now designates the three years in which the scans are to be performed (2015, 2016, and 2017) and that mercury must be sampled using EPA Method 1631 E. Please review this draft carefully to ensure thorough understanding of the information, conditions, and requirements contained therein. At this time, the Division is soliciting public comment on this draft as required by the EPA by publishing a notice in newspapers of general circulation in the Alamance County area. Please provide any comments you have regarding the draft permit to this office no later than May 16, 2014. Following the 30-day public comment period, the Division will review all pertinent comments and take appropriate action prior to issuing a final NPDES permit. nnis J. pri19, 2014 PPage 3 of 3 Hodge, Wastewater Director If you have questions concerning the draft permit for your facility, please contact me by e-mail Oulie.grzyb@ncdenr.gov) or call me at (919) 807-6389. Respectfully, Julie A. Grzyb Environmental Engineer, NPDES Wastewater Division of Water Resources, NCDENR Enclosure: NPDES Permit NC0021474 (Draft permit) cc: NPDES Unit e-copy: EPA, Region IV Winston-Salem Regional Office / Surface Water Protection Section Steve Reid, Wastewater Operator Certification & Training Eric Hudson, Winston Salem Regional Office/DWR/Public Water Supply Section Susan Meadows, Aquatic Toxicity Branch Carrie Ruhlman, Ecosystems Branch Steve Kroger, Ecosystem Branch Sarah Bass, PERC, Water Quality Permitting ppppppp- Permit No. NC0021474 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER UNDER ATIONAL POLLUTANT DISCHARGE ELIlVIIN ON SYSTEM In compliance with the provisions of North Caroli<IGI�Statute 143-215.1, d and regulations promulgated and adopted by the ina Environmental Commission, and the Federal Water Pollution Coname the .94 $MCity ofA� is hereby authorized to discharge wasteXCo%M%61K1997) facility 1 at the Mebane atme635 standards to receiving waters ated as Mo _ s Creek e Cape Fear River Basin in accordance with efflu to ' re ements, and other conditions set forth in Parts I, II, III,.; ,�V hereo This 04Wt shall become eflftye ... . .......... ....XXXX, 2014. This permit authorization' scharge shall expire at midnight on .................................May 31, 2019. Signed this day.....: .XXXX, 2014. Thomas A. Reeder, Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 12 Permit No. I'N SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein, is hereby authorized to: 1. The City of Mebane Continue to operate an existing 2.5 MGD wastewater Wastewater Treatment Plant, on 635 Corrigidor Road Alamance County, and consisting of: -14 • influent bar screen grit chamber dual aeration basins three final clarifiers chlorine contact chamber dechlorination aerobic sludge 2. Discharge from s Moadams Creek, w at the Mebane A Mebane, Eied on the attached map into the in the Cape Fear River Basin. Page 2 of 12 Permit No. NCO021474 PART I A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (a.) During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored) by the Permittee as specified below: Flow 2.5 MGD Continuous cording Influent or Effluent Total Monthly Flow (MG) Monitor & Report Monthl > Rec. or Calc. Effluent BOD, 5 day, 200C A nl 1 -October 31 3 (P )" S.0 mg/L 7.5 mg/L _ omposite Influent & Effluent BOD, 5 day, 20°C (November 1 - March 31) 10.0 mg/L 15.0 mg/L , Daily . ite Influent & Effluent Total Suspended Solids 3 30.0 mg/L 45.0 mg/L ,. wice per week Com Influent & Effluent NH3 as N (April 1 October 31) 2.0 mg/L 6.0 mg/L AA Twice per ek Composite Effluent NH3 as N (November 1 -March 31) 4.0 mg/L 12.0 mg/L Twic � eek Composite Effluent Dissolved Oxygen 4 1 A& lawily Grab Effluent pHs Grab Effluent Temperature (°C) Grab Effluent Fecal Coliform (geometric mean) 200/100ml- 400/100 Daily s Grab Effluent Total Residual Chlorine 6 17 Grab Grab Effluent Effluent Conductivity (pmhos/cm) Daiif TKN Monit eport (Mgw Weekly Composite Effluent NO3-N + NO2-N Moni Report (mg/L . Weekly Composite Effluent Total Nitrogen, (TN)' M (mg/L) Weekly Composite Effluent TN Load 8,9 0 5 IMW Monthly Annually Calculated Effluent Total Pho TP Lo' ' itor & Report (mg/L) z on eport (lb/mo) [QM665] r Y665 Weekly Composite Effluent Monthly Annually Calculated Effluent Total Quarterly Composite Effluent Chronic T a lZ Quarterly Composite Effluent Effluent Pollut L n 13 Monitor & Report Footnote 13 Footnote 13 Effluent All footnotes are liste&* the following page. Page 3 of 12 Permit No. 1 Footnotes: 1. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring reports electronically using NC DWR's eDMR application system. See Special Condition A. (11.). 2. See Special Condition A. (2.) for instream sampling locations and requirements. Instream monitoring requirements may be provisionally waived per Condition A. (2.). 3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85% removal). 4. The daily average dissolved oxygen effluent concentration shall not be less th 6.0 mg/L. 5. The pH shall not be less than 6.0 standard units nor greater than 9.0 standar 6. The Division shall consider all effluent total residual chlorine values rep low 50 µg/L to be in compliance with the permit. However, the Permittee shall continue t and submit all values reported by a North Carolina certified laboratory (including field certified), values fall below 50 µg/L. 7. TN = TKN + NO3-N + NO2-N, where TN is total nitrogen, TKN is : Kjel 'trogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.=at 8. TN or TP Load is the mass quantity of Total Nitrogen or P orus discharged in n period of time. See Special Condition A. (10.), Calculation of Total Nitr. r Total Phosphorus Loa 9. Compliance with mass limits shall be determined in ance with Special Condition Annual Limits for Total Nitrogen or Total Phosphorus. 10. Per the Jordan Lake Wastewater Discharge Rule (15A N 2B . s modified by North Carolina Session Laws 2011-394 (HB119) and 2013-395 (SB515), the a Total Nitrogen limit shall be effective beginning with calendar year 2019, unle - ermittee has re by December 31, 2019, an authorization - to -construct permit for construction, inst'" Iteration of atment works for purposes of complying with this limit, in which case th i effective g with calendar year 2021. See special condition A. (4.) on the TN Complia ' ched 11. Total Zinc shall be sampled in n'unction wiironic p g 12. Chronic Toxicity (Cerioda 90% with �'f' anuar;k "_ , July and October (see Special Condition A. (7.)). 13. The permittee shall m three Ef t Pollu ns during the term of this permit. (See Special Condition A. (b.) There shall be no disc h f 1 oam in other than trace amounts. R A A.(2.) EAM MON I EQUIREMENTS (a.) Dissolved Oxygen ab 3Meek (June -Sept) 1Meek (October - May) U, D1, D2, D3 Temperature Grab 3/Week (June -Sept) 1/Week (October- May) U, D1, D2, D3 Fecal Coliform Grab 3Meek (June -Sept) 1/Week (October - May) U, D1, D2, D3 Conductivity Grab 3/Week (June -Sept) 1/Week (October- May) U, D1, D2, D3 SAMPLE LOCATIONS U - Upstream 100 feet of discharge, D1- Downstream at NCSR 1940, Moadams Creek, D2 - Downstream at Back Creek at NCSR 1940 (June - Sept only) D3 - Downstream at Back Creek at NC Highway 54. Page 4 of 12 Permit No. NCO021474 ppppppp (Continued A. (2.) INSTREAM MONITORING REQUIREMENTS (b.) Instream monitoring requirements in this NPDES permit shall be provisionally waived so long as the Permittee remains a member of the Upper Cape Fear River Basin Association and the Association continues to function as approved by the Division and Environmental Management Commission. If the Permittee does not participate in the Association or if the Association ceases to function, the instream monitoring requirements in this permit become effective immediately; and the Division may reopen this permit by administrative letter to establish additional instream monitoring requirements, it deems necessary to adequately character e effects of the discharges on water quality in the receiving stream. WrF A.(3.) NUTRIENT ALLOCATIONS (a.) The following table lists the Total Nitrogen (TN) and Phosphorus allocations assigned to, acquired by, or transferred to the Permittee in a ' ce with the Jor ake nutrient management rule (T15A NCAC 02B .0270) and s of each as of perrru ance. For compliance purposes, this table does not sup any TN4orhmit establis ewhere in this permit or in the NPDES permit of a comp li ssocia'which the Per e is a Co- Permittee Member. To itrogen Al Base Assi le 8/ t 40,225 Active (T10) J� TOTAL 1," 22,526 40,225 Active Footnote: 4 V � a% (1) Nitrogen *' ort Fact Total Allocation B Assig Rule 18111I09 2,781 5,056 I Active (T15AB 0270) TOTAL I 2,781 I 5,056 I Active Footnote' < '4� * (1) Phospho a nsport Factor = 55% (b.) Any addition, deletion, or modification of the listed allocation(s) (other than to correct typographical errors) or any change from Reserved to Active status of any of the listed allocations shall be considered a major modification of this permit and shall be subject to the public review process afforded such modifications under state and federal rules. Page 5 of 12 Permit No. N A.(4.) TOTAL NITROGEN COMPLIANCE SCHEDULE (a.) The permittee shall comply with the TN Load limit specified in Condition A. (1.) in accordance with the following schedule: April 30, 2015: Evaluate and submit a report to DWR on the need and interest in establishing a compliance trading association for Jordan Lake. April 30, 2016: Submit a nutrient removal optimization report to DWR for the Mebane WWTP April 30, 2017: Submit a nutrient compliance plan to DWR f ew and approval. The plan should project and accommodate anti cl loadings through 2027. April 30, 2018: Submit a nutrient removal optimizati: or WR for the Mebane WWTP` January 1, 2019/2021: Beginning with CY2019, y with total nitrogen is the TN Load limit listed in Condition xcept that, if the permitte ires an authorization-to-construc t require meet that limit, all comply with the limit no later than 1. . J' All submissions shall be sent to: NCDOW DWR/ NP roarams flake W 1617 RING REOPENER Pursuant to N.C. GenNWtatute Section 143-215.1 and the implementing rules found in Title 15A of the North Carolina Administrative Code, Subchapter 2H, specifically, 15A NCAC 2H.0112(b) (1) and 2H.0114(a), and Part II, Sections B-12 and B-13 of this permit, the Director of DWR may reopen this permit to require supplemental nutrient monitoring of the discharge. The additional monitoring will be to support water quality modeling efforts within the Cape Fear River Basin, and shall be consistent with a monitoring plan developed jointly by the Division and affected stakeholders. Page 6 of 12 ppppp Permit No. NCO021474 A.(7.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 90%. The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or subsequent versions. The tests will be performed during the months of January, April, July, and October. These months signify the first month of each three month toxicity testing quarter assigned to the facility. Effluent sampling for this testing ry st be obtained during representative effluent discharge and shall be performed at the NPDES ed final effluent discharge below all treatment processes. If the test procedure performed as the first test of any single qu is in a failure or ChV below the permit limit, then multiple -concentration testing s p ` ed at a minimum, in each of the two following months as described in "North o 'a Phase onic Whole Effluent Toxicity Test Procedure" (Revised -December 2010) or s ent versions All toxicity testing results required as part of this per dition will be entere e Effluent Discharge Monitoring Form (MR-1) for the months ' ch tests were performed, the parameter code TGP313 for the pass/fail results and THP313 for onic V „ Additionally, Form AT-3 (original) is to be sent to the following address: Attention North Carolin on of Water Resources er Sciences Service leig Caro 6'k,,- 99-1621 51 Completed Aquatic Toxicity Test Forms sha iled w Ater ces Section no later than 30 days after the end of the rep �° m iod for or Test data shall be compl, ° cura lude all sting chemical/ physical measurements and all concentration/ respo . ,and be ied by 1' atory supervisor and ORC or approved designate signature. 1 and c e of the e nt toxicity sample must be measured and reported if chlorine is e I ed fo of th ste stream. Should there discha r0m ring a month in which toxicity monitoring is required, ill c to the informati located at the top of the aquatic toxicity (AT) test form ' g the am it number, pipe number, county, and the month/year of the rep the notation o Flo the comment area of the form. The report shall be submitted to the r Sciences Sec tio the a cited above. Should tfi" mittee fail to for during a month in which toxicity monitoring is required, monitoring e required d g the following month. Assessment of toxicity compliance is based on the toxicity tes uarter, w is the three month time interval that begins on the first day of the month in which t ` � " , to s required by this permit and continues until the final day of the third month. Should any rom this monitoring requirement or tests performed by the North Carolina Division of " Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. If the Permittee monitors any pollutant more frequently than required by this permit, the results of such monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT Form submitted. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring. Page 7 of 12 A.(8.) EFFLUENT POLLUTANT SCAN Permit No. N "44 (a.) The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One scan must be performed in each of the following years: 2015, 2016, and 2017. Analytical methods shall be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are present in concentrations greater than applicable standards and criteria. Samples should be collected with one quarterly toxicity test each year, and must represent seasonal variation [i.e. do not sample in the same quarter every year]. Unless otherwise indicated, metals shall be analyzed as "total recoverable." Ammonia (as N) Chlorine (total residual, TRC) Dissolved oxygen Nitrate/ Nitrite Total Kjeldahl nitrogen Oil and grease Total Phosphorus Total dissolved solids Hardness Antimony Arsenic Beryllium Cadmium Chromium Copper Lead Mercury (EPA Method 1631E) Nickel Selenium Silver' Thallium Zinc Cyanide Total Dhensfic.,comoou Trans-1,2-dichloroethylene 1,1-dichloroethylene 1,2-dichloropropane 1,3-dichloropropylene Ethylbenzene Methyl bromide Methyl chloride 3 Methylene chlor' ' 1,1,2,2-tetrac ane Tetrachlor ene Toluene tip. 1,1,1-trichloroeth .,.` P Wf s Pentachlorophenol Fin " Phenol lonitrile'� s �� 2,4,6-trichlorophenol Chloroethane Chloroform Dichlorobromomethane 1,1-dichloroethane 1,2-dichloroethane Acenaphthene Acenaphthylene Anthracene Benzidine Benzo(a)anthracene Benzo(a)pyrene 3,4 benzofluoranthene Benzo(ghi)perylene Benzo(k)fluoranthene Bis (2-chloroethoxy) methane (2-chloroethyl) ether -chloroisopropyl) ether (2-ethylhexyl) phthalate ,omophenyl phenyl ether V1 benzyl phthalate 1 phenyl ether Di-n-butyl Di-n-octyl 1,2-dichlorobenzene 1,3-dichlorobenzene 1,4-dichlorobenzene 3,3-dichlorobenzidine Diethyl phthalate bimethyl phthalate 2,4-dinitrotoluene 2,6-dinitrotoluene 1,2-diphenylhydrazine Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclo-pentadiene Hexachloroethane Indeno(1,2,3-cd) pyrene Isophorone Naphthalene Nitrobenzene N-nitrosodi-n-propylamine N-nitrosodimethylamine N-nitrosodiphenylamine Phenanthrene Pyrene 1,2,4-trichlorobenzene (b.) Reporting. Test results shall be reported on DWR Form- A MR-PPA1(or in a form approved by the Director) by December 31st of each designated sampling year. The report shall be submitted to the following address: NCDENR/DWR/Central Files,1617 Mail Service Center, Raleigh, North Carolina 27699-1617. Page 8 of 12 1pppppp- Permit No. NC0021474 ANNUAL LIMITS FOR TOTAL NITROGEN OR TOTAL PHOSPHORUS (a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits for NPDES dischargers in the Jordan Lake watershed are annual limits and apply on a calendar year basis. (b.) For any given calendar year, the Permittee shall be in compliance with the annual TN (or TP) Load limit in this Permit if: (i.) the Permittee's annual TN (or TP) Load is less than or equal to the effective limit, or (ii.) the Permittee is a Co-Permittee Member of a compliance association. (c.) The TN (or TP) Load limit in this Permit may be modified as the rest; f allowable changes in the Permittee's allocations. "ffiUM= (i.) Allowable changes include those resulting from purcha (or TP) allocation from an authorized mitigation banker, the Ecosystem Enhanc I am, or other source allowed under applicable regulations; purchase, sale; _ de, or of allocation between the Permittee and other dischargers; regionaliz ;and other tr ons approved by the Division. i (ii.) The Perrnittee may request a modificatio e TN (or TP) Load limit' Permit to reflect allowable changes in its allocatio ez (A) Upon receipt of timely and proper ap appropriate and in accordance with state (B) Changes in TN (or TP) come effecti permit modification. Thel ust recf changes proposed for the w' a Any requests for modification sho be sen " ENR/ D . S A rdan La tershi x' 161 it Servic ter Ral NC 276 d 17 (d.) If the Permittee is 'A 1 of a eivavear. its Jim -its therein. :vision will modify the permit as program requirements. nary 1 of the year following cation no later than August 31 for Coordinator approved compliance association on January that year are governed by that association's OPThe Permitt ll be 'dered a Co-Permittee Member for any given calendar year in qk which it is iden as s Appendix A of the association's group NPDES permit. (ii sociation roster d me ' ers' TN and TP allocations will be updated annually and in dance with st� d federal program requirements. R (iii.) If mittee in to join or leave a compliance association, the Division must be notifie e ed action in accordance with the procedures defined in the associati S permit. (A) Upon ript of timely and proper notification, the Division will modify the permit as appropriate and in accordance with state and federal program requirements. (B) Membership changes in a compliance association become effective on January 1 of the year following modification of the association's permit. (e.) The TN and TP monitoring and reporting requirements in this Permit remain in effect throughout the term of the Permit and are not affected by the Permittee's membership in a compliance association. Page 9 of 12 Permit No. N 4RR A.(10.) CALCULATION OF TOTAL NITROGEN OR TOTAL PHOSPHORUS LOADS (a.) The Permittee shall calculate monthly and annual TN Loads as follows: (i.) Monthly TN (or TP) Load (lb/mo) = TN (or TP) x TMF x 8.34 where: TN or TP = the average Total Nitrogen or Total Phosphorus concentration (mg/ L) of the composite samples collected during the month TMF = the Total Monthly Flow of wastewater discharged during the month (MG/mo) 8.34 = conversion factor, from (mg/L x MGM � ����unds (ii.) Annual TN (or TP) Load (lb/yr) = Sum of the 12 year (b.) The Permittee shall report monthly Total Nitrogen lb/ mo) in the appropriate discharge monitoring re calendar year's results (lb/yr) with the Decemb A.(11.) ELECTRONIC REPORTING OF DISCITAM Proposed federal regulations require electronic submittal and specify that, if a state does not estab stem to r submit DMRs electronically to the Envird Wtect that these regulations will be adopted and NOTE: This special condition 1 permit (Standard Conditio • Section B. (11) u " ory Req • Section D. (2. -' ` orting • Section D. (6) ds Rete • Section E. (5.) M in TP) Loads for the calendar Vital Phospho ults (mg/ Land )r each month an report ort each for that year. ;t RING REPO irge monitoring reports (DMRs) submittals, then permittees must ,(EPA). The Division anticipates Wa in late 2013. within Part II of this (a.) eRe'" edes" n D. (2.) and Section E.(5.) (a)] gno 1 "+2 s fromte effective date of this permit, the permittee shall begin discharg for to electronically using the NC DWR's Electronic Discharge Report ( pplication. Mo .,,I results obta , during the previous month(s) shall be summarized for each month and sub d electro y using eDMR. The eDMR system allows permitted facilities to enter monitorin an t DMRs electronically using the internet. Until such time that the state's eDMR" n is compliant with EPA's Cross -Media Electronic Reporting Regulation (CROMERR), pe ees will be required to submit all discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR to the following address: NC DENR / DWR / Information Processing Unit ATTENTION: Central Files / eDMR 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Page 10 of 12 1pppppp� Permit No. NCO021474 (Continued, A.(11.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being physically located in an area where less than 10 percent of the households have broadband access, then a temporary waiver from the NPDES electronic reporting requirements may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address above. Requests for temporary waivers from the NPDES electronic reporting requirements must be submitted in writing to the Division for written approval at least si 00) days prior to the date the facility would be required under this permit to begin using e Temporary waivers shall be valid for twelve (12) months and shall thereupon expire. A" ` time, DMRs shall be submitted electronically to the Division unless the permitted a : s for and is granted a new temporary waiver by the Division. Information on eDMR and application for a reporting requirements is found on the folic http://portal.ncdenr.org/web/wq/ Regardless of the submission method, the first I following the issuance of the permit or in the case following the commencement ofe. (b.) Signatory Requirements [Suppleme All eDMRs submitted to the permit is ' Part II, Section B. (11.) . < x a duly ate n, and Part II, Section B. (1 _ g eDMR reportine ses s.. For eDMR su ions, the account and to entia Carolina's eDMR s� we ion. Any p` following ce :ATION WIL 91.31=24 from theIM ES electronic page: edmr d the last day of the month cility, on the last day of the month 1.) (b) a persedes Section B. (11.) (d)] ;be z by a person described in e o that person as described in on, m delegated signatory authority for nitting the DMR must obtain an eDMR user stem. For more information on North obtaining an eDMR user account, please wq/ admin/bog/ ipu/ edmr zb ' g an electronic DMR using the state's eDMR system shall Lion FR 122.22]. NO OTHER STATEMENTS OF ACCEPTED: "I certify, r penalty "o, that this document and all attachments were prepared under my direction or supervisirit cco with a system designed to assure that qualified personnel properly gather and evaluate the in submitted. Based on my inquiry of the person or persons who manage the system, or those persons di y responsible forgathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." (c.) Records Retention [Supplements Section D. (6.)] The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These records or copies shall be maintained for a period of at least 3 years from the date of the report. This period may be extended by request of the Director at any time [40 CFR 122.411. Page 11 of 12 A.(12.) MERCURY MINIMIZATION PLAN (MMP) Permit N"qq o. N The permittee shall develop and implement a mercury minimization plan during this permit term. The MMP shall be developed within 180 days of the NPDES Permit Effective Date, and shall be available for inspection on -site. A sample MMP was developed through a stakeholder review process and has been placed on the Division website for guidance (hU://12ortal.ncdenr.org/web/wq/swp/12s/npdes, under Model Mercury Minimization Plan). The MMP should place emphasis on identification of mercury contributors and goals for reduction. Results shall be summarized and submitted with the next permit renewal. Page 12 of 12 PPPPPP"' DENR/DWR FACT SHEET FOR NPDES PERMIT DEVELOPMENT NPDES No. NCO21474 Facility Information Appucant/Facility Name: City of Mebane / Mebane WWTP Applicant;Address; 106 E. Washington St, Mebane, NC 27302 Facility Address: 635 Corrigidor Road, Mebane, NC 27302 ; Permitted -Flow 2.5 MGD { Type of Waste: Municipal (domestic and industrial) :._., Facihty/Permit Status: Class 4 / Renewal r rr�r� r Counfy: _ fr, t Alamance 1Vliscellaneous Receiving Stream. Moadams Creek Regional Office: Wmsn Salem r Stream Classification: WS-V; NSW State -Grid / USGS Quad: Mebane% C21SE 303(d) Listed? ;, No >Permit Writer: Julie Grzyb Subbasin/HUC# - 030602/030^QUQ204 Date: ' 4/8/2014 Drainage Area (nu2): 0.9fr``" Lat. 36° 05' 26" N Long. 79° 17' 14" W Summed 7Q10{(cfs) 0.0*aW Waiter 7Q10 0.0 Average Flow IWC (%): 90 `l SUMMARY r rff Ft �? a rr rr fir' r r \ rfr`r ��r •r .r i ff�fr �,.,,�-,.fj r�. This renewal'nixoxi was"iflgtnally subii d on November 29, 2010. Since then the Jordan La WastewEL?scharg`�rRule was modified by Session Laws 2011-394 (HB119) and 2013-30� SB515). This p f it was t i revised and re -drafted to include these modifications f f< . =� and`a cotxl'_Xtartce schedule`r�ti;#lining fide actions the City will take to comply with annual total �Fr,�, r-T nitrogen taRg'#" S. listed in NP1� S Permit NC0021474. rF :a The City of Mebatfperatea 2.5 MGD wastewater treatment. The treatment plant serves 10,000 persons in the Q-aft A Mebane. The facility consists of a bar screen, grit chamber, ri.-s. aeration basin, three clbikfiers, two sand filters, chlorine contact basin, sulfur dioxide dechlorination, rotary drum thickener, sludge holding tank and two aerobic digesters. The City has made operational changes to comply with the Jordan Lake Nutrient Rules and will continue to closely evaluate whether these operational changes will be sufficient or if additional changes will be needed to comply. The existing permit limits for the Mebane WWTP are: Flow = 2.5 MGD BOD5 = 5 mg/1 (summer); 10 mg/l (winter) NH3 = 2 mg/1(summer); 4 mg/1(winter) Fact Sheet NPDES NCO021474 n--.. , DO-- 6 mg/l TSS = 30 mg/l Fecal Coliform = 200/100m1(mo. avg.); 400/100ml (wk. avg.) TRC=17 ug/1(da. max.) pH=6.0SU to9.0SU Chronic toxicity at 90% - quarterly testing in Jan Apr Jul Oct Total Phosphorus load limit of 5056 lb/year (eff. January 1, 2010) Monitoring and reporting for Total Nitrogen. Weekly limits for fluoride and mercury. Twice per month monitoring for copper, chloride and zinc. PRETREATMENTfr The City has an approved pretreatment program with two (2)Jibn caggrical S1Us and two (2) rw r r categorical industrial users (AKG of America, General Electri,'..SRI Sur{l,Express, and Sandvik) . The permitted flow for the pretreatment progiain is 0:0675 MGD t is r�� �r� ate. recommended that the City continue to implement_. a approved pretreatme Xtong term monitoring program (LTMP). 2010 PERMIT MODIFICATION In July 2010, Mebane's permit was modified along with 13 ofie;dischargers based on the Jordan Reservoir Wastewater Discharge Re' q fir ements (T15A 1 (C`-,,C 02B..0270) establishing annual mass phosphorus limits for these falifssrkecome effectiv'with calendar year 2010. Although the effective date of the permit mdr� ,Mcatio m ugustA, 2010, the new phosphorus :fY t t.-. ift.+ limits of 5,056 lb/yr became effective January T %20- -O'by iU 4 applied to calendar year 2010 in its entirety. The 2010 modified feriitaJ.so inc'ded nutrient a1ation tables for total nitrogen and total phosphorus. The phosphorusfallacon/.:.limit wasapplied in 2010 as noted above. The nitrogen allQtXQt Was listec%010,iowev$TZe annual load limit of 40,2251b/yr has been added to th2s renewalrPtit wi lr effective date of calendar year 2019. Attached is the Jordan T ;ake factsheet frtiri? `t}�ie 2010 10 , - t modification. Note page 5 which lists the allocation :::;= tables fog=a7_discharzers ircludin� th_Mebane WWTP. Moadams Creek•"` riot listea-;,' the 2012 303 (d) Impaired Streams List or the draft 2014 .--:;:• Impaired Streams li§t e', stream was formerly classified as C NSW, but was reclassified to WS-V; NSW effective Aftust 11, 2009. This reclassification was for all C NSW and B NSW waters upstream of the dam at B. Everett Jordan Reservoir. However, in accordance with Senate Bill 810 adopted on July 16, 2012, facilities discharging to WS-V streams located in the Jordan Reservoir watershed are not subject to water quality standards set out in 15A NCAC 2B .0218(3)(e) through (3)(h) except under certain conditions. Fact Sheet NPDES NCO021474 Paee 2 WpOnj7y16,2012 the NC Governor signed Senate Bill 810 which included the following clarification on WS-V waters: SECTION 12.1. Rules adopted by the Environmental Management Commission pursuant to S.L. 2009-216 and S.L. 2009-486 to nnplement nutrient nianagenient strategies for the B. Everett Jordan Reservoir and the Falls of the Neuse Reseivoir watersheds shall not be interpreted to apply surface water quality standards set out in 15A NCAC 2B .0218(3)(e) tiirougli (3)01) to waters designated in the inutrient management niles as «rS-V except wliere: (i) the designation of WS-V is associated with a water supply intake ttsed by an industry to supply drinking water for tlieir employees; or (ii) standards set out in 15A NCAC 02B .0218(3)(e) througli (3)(h) are violated at the upstream boundary of waters within those watersheds that are classified as WS-II, WS-III, or WS-IV. This section sliall not be construed to alter the nutrient reduction requirements set out in 15A NCAC 213 .0262(5) or 15A NCAC 2B .0275(3). Based on this bill, water quality standards for a stream applied to the Mebane WWTP and its discharge into M and (ii) in Section 12.1 (above) are not met in this insti TOXICITY TESTING: »r.•, Existing limit: Chronic limit at 90 /° Cerioda hnia Pass January, April, July, and October. From January 2009 to December 2013, the faity has passed a Recommendation: Continuation of Chromic��Iimit at January, April, July and October. Overall, compliance.. permit cycle. 1) TT violation was issued; mercury have bee A total re$1 purposes. -;i exception of permit limits chlorine re any re reported use minor 664( e last as a *#6t--,supply will not be .reek bed se;.the conditions (i) Quarterly testing conducted in ty tests. terly testing in uts= the permit `% as been achieved by the facility during this rr.-j an e iteedance of tl t � n2rcury limit in June 2009 and a notice of st violation ifthere have been no other exceedances of the f {�� -- Z r ... � l� one exi��tce of the fluoride limit in 2010, however there sits a-Ahat time. 3) There were some apparent exceedances of the owei �&A-he_current EPA approved compliance level for TRC is 50 ted vale less than 50 ug/l are considered zero for compliance values were not considered to be limit violations. With the littions, the Mebane WWTP has been in compliance with most Lewal in 2006. Current Parameters: Dissolved Oxygen, Temperature, Fecal Coliform and Conductivity Recommended Parameters: Dissolved Oxygen, Temperature, Fecal Coliform, Conductivity Upstream: Upstream 100 feet of discharge D1: Downstream at NCSR 1940, Moadams Creek D2: Downstream at Back Creek at NCSR 1936 D3: Downstream at Back Creek at Highway 54 Mebane is a member of the Upper Cape Fear River Basin Association (UCFRBA) and therefore individual instream monitoring requirements are waived as long as the City is a member. Fact Sheet NPDES NCO021474 ---- I The memorandum of agreement between the UCFRBA and DWQ was renewed May 1, 2010 and is effective until April 30, 2015. The UCFRBA conducts instream monitoring for its membership and compiles data for review and evaluation. A review of data for station B1350000- Moadams Creek at Corrigidor Road upstream of discharge near Mebane, indicated only elevated iron and fecal coliform values. All other field parameters, metals and nutrients were below water quality standards. The station downstream of Mebane's WWTP, B1380000 — Moadams Creek at SR 1940 Gibson Road near Florence Town, also showed elevated iron and fecal values, with other parameters below water quality standards. PERMIT DEVELOPMENT: NuMTEN CONTROL REQUIREMENTS The Mebane WWTP is subject to nutrient controls estab] Wastewater Discharge Requirements rule (T15A NCAC all affected dischargers in the watershed were modified; f; limits . Although the effective date of the permit m90 fi phosphorus limits of 5,056 lb/yr became calendar year 2010 in its entirety. The modified permits did not include linut., rule, were to become effective with calerid .ram, passed two bills that extended the complia" nutrient -related improvements by the end c dates to 2019/2021. The annual load limit of with an effective date of:calerrdar=:year 2019. Reservoir �13 .0270). In Jlll•Yi' c =&tal lish ann-dZ .lion was August 1 1, 201Q;by rule and for Total Nitro; :near 2016. The for 0, the permits for }ss phosphorus Pr•. ?010. the new hich, under the wastewater feral Assembly has since li'sthat acquired ATCs for Ir extended the 2016/2018 added to this renewal permit The 2010 modified *ii tti~ also inc) iied nutrient 4-location tables for total nitrogen and total phosphorus. Attached is the Jgrc�a ,Lt,'.fr ake. ictsheeom the 2010 permit modification. Note d { page 5 whic i_ s f.::,. #�i :allocaii� tables fora113 s+chargers including the Mebane WWTP. ...::_... in discharge onitoriWreports and Effluent Pollutant Scans from 2011 through 2013 were ev&ated and a R6onable Potential Analysis (RPA) conducted for detected levels of Chloride, F ,P- Mo, and 2Wsee RPA attached). Ag, As, Cd, Chloride, Cr, Cu, CN, F, Ni, Mo, Pb, Se, and Zn wil] remain as assigned monitoring parameters under the City's Long Term Pretreatment Programs.;;,;. >' • Effluent samphsg data for As, Cd, Cr, Cu, CN, Ni, Se, and Ag were all less than detection levels. Per RPS guidance as a non -detect Cu monitoring will be removed from Section A.(1.). Effluent sampling data for Chloride, F, Pb, showed no reasonable potential to exceed WQS limits.Their predicted concentration value was between 50% and 100% of the limit. Per RPA guidance as parameters monitoring in the pretreatment program, Chloride and F monitoring will be removed from Section A.(1.). Mo showed no potential to exceed the WQS limit. The predicted value was less than 50% of the limit. Per RPA guidance no further action will be required. Fact Sheet NPDES NCO021474 Pan 4 OPPPPP,,, • Effluent sampling data for Zinc showed reasonable potential to violate Water Quality Standards. Since Zinc has an action level standard effluent data is reviewed in conjunction with toxicity testing. Zinc monitoring will remain in the permit at a reduced frequency of quarterly in Section A.(1.) to coincide with toxicity testing. MERCURY LIMITATION DEVELOPMENT Effluent Mercury Data - Mebane WWTP Year 2009 2010 2011 2012 2013 # of Samples 31 53 52 52 .;: 53 Annual Average, ng/L 3.3 1.7 1.2 2.5;r'`' 2.2 Maximum Value, ng/L 45.20 5.61 3.23 :>'`4:7• 6.40 TBEL, ng/L 47,22 WQBEL, ng/L 12.0 Per the Division guidelines for implementing the data was evaluated. Annual averages for all _# Quality Based Effluent Limitation of 12.0 ng/L (TBEL) of 47 ng/L. In accordance with the im TMDL, the City is required to develQp� and v continue to monitor for mercury as part' sfEffl In December 2012 the City of M reductions for total suspe>W, reviewed (2011-2013){fok�each Effluent Analysis S . Re ammonia -nitrogen were grate the TMDL, five years"ffercury effluent wer;,sz less than the a7lfwable Water ec rsology Based Effluent Limitation tzt of the 2012 Statewide Mercury Mercury Minimization Plan and submitEe4 darts re'06' t monitoring frequency and ammgA a-nitroge�i 'three years of effluent data was ;ter and a sQ)unary on the analysis is attached and titled - monitoring ;e ; :uencies for total suspended solids and d q)R a reviei, emonstrating long-term treatment o�"ftftimitations (<50%). date to May 31, 2019 to allow five years before permit An al dischai load limit of 40,225 pounds per year (lb/yr) for total nitrogen has beenWded,V`the permit in accordance with the Jordan Lake Nutrient Manageni fif-Stiategy rules. Footnote #10 in Special Condition A.(1.) specifies an effective dale of calendar year 2019 for the total nitrogen limit, consistent with Session Law 2013-395 (Senate Bill 515). • Effluent limitations and monitoring for Fluoride and Chloride were removed from the permit because no reasonable potential to violate surface WQS's for these parameters was found. The City will continue to monitor these parameters as part of their Long Term Pretreatment Program. • Effluent monitoring for Total Copper was removed from the permit because no reasonable potential to violate surface WQS's for this parameter was found. Fact Sheet NPDES NC0021474 D--- [ Based on evaluation of submitted data, the weekly average limit for mercury w'IR removed because the annual averages were less than the WQBEL and the TBEL. Also, the maximum value did not exceed the TBEL. In accordance with the implementation of the 2012 Statewide Mercury TMDL, the City is required to develop and implement a Mercury M?nimi7ation Plan and continue to monitor for mercury as part of its Effluent Pollutant Scans. • An evaluation of Total Zinc effluent data showed a reasonable potential to violate WQS. Since the WQS for Total Zinc is an action level standard, monitoring for Total Zinc was maintained in the permit, at a reduced frequency cf quarterly to coincide with toxicity testing. • The monitoring frequencies for total suspended reduced from daily to twice per week based on a treatment performance at levels consistently belc • Minor language has been modified in In addition, a new paragraph regardu paragraph from the end of the conditj • Please note the following in Special Condition; 1) Language updated to note- hree scans must and 2) mercury must be sampl_edusing EPA D • In accordance with Federal ReN�. a it containing annual milestones outum. comply with the Jordan Lake Wasfi_'y Condition A ) `f • Special C6eftion A. (5)r Nitrogen O • �r submission ofYieplanfayythe City of Part 1 Draffrex ii 'to Public N0 ce- AX ri1.9, 2014 (estimate) Permit Sclld to Issue: _ : June 2, 2014 (estimate) ammonia -nitrogen were onstrating long-term i .gations (<50%). Chronic 'T'ocity Permit Limit. 'S 1 l had been a� (second Pollutarif Scan: during the permit cycle Rchedule of compliance of Mebane will take to was added under Special has been updated to note the If you have questiorisregarfling any of the above information or on the attached permit, please contact Julie Grzyb at`(9:119) 807-6389. NAME: DATE: REGIONAL OFFICE COMMENTS Fact Sheet NPDES NCO021474 Page 6 F Graznak, Jenny From: Dennis Hodge <dhodge@cityofinebane.com> Sent: Tuesday, April 22, 2014 6:00 PM To: Graznak, Jenny Subject: RE: Mebane Storm Event Good afternoon Jenny, I hope you guys had a great Easter weekend. Ours was a little wet but it was still nice to be able to spend a little extra time with my family. I just wanted to give you an update concerning the rain event that occurred April 7 & 8. We have since received the BOD data for that weekend and it appears that we have exceeded our weekly average of 7.5 mg/L. Our average for the week is going to be a little over 8.0 mg/L. On the worst day our TSS was 21.2 mg/L which probably caused our BOD to be around 17.0 mg/L. Other than the BOD it looks like all other parameters were met for the week. If you have any questions, as always do not hesitate to call. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.cityofmebane.com E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Dennis Hodge Sent: Thursday, April 10, 2014 3:12 PM To: ienny.graznak0ncdenr.gov Subject: Mebane Storm Event Good Morning Jenny, Hope your day is going well. I'm following up on the phone message that I left you on Tuesday of this week. On Monday the Mebane area received 2 inches of rain over about 8 hours. This caused a huge increase in the incoming flow to the WWTP. Based on our flow meter measurements our influent flow peaked at over 8 MG for about 2-3 hours. Our 24 hour flow for Monday was just under 3.7 MGD. Our new effluent filters are designed for a peak flow of 8.0 MG so they were overwhelmed with the additional flow. The effluent TSS for the day was around 21.2 mg/L and the day following was 7.17 mg/L. The fecal coliform was >2419.6 colonies/100 mis for Monday and 49 colonies/100 mis for Tuesday. Considering the amount of water that came through the plant responded better than I expected. If you have any questions or need more information don't hesitate to contact me. Have a great weekend! Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.cityofinebane.com E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. /t o447v''% #Pw do va O6 OTC Aww&m* da Nye Afkom Am*o a&&a �. � rpr Pat McCrory Governor S' ILP WIFA 7 �� NCDENR North Carolina Department of Environment and Natural Resources July 11, 2014 Mr. David Cheek, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: Notice of Deficiency (NOD-2014-LV-0066) NPDES Permit No. NCO021474 City of Mebane Wastewater Treatment Plant Alamance County Dear Mr. Cheek: John E. Skvarla, III Secretary A review of the self -monitoring report for the month of April 2014 revealed the following violation of permit limits: Parameter Date Limit Value Reported Value Limit Type Biochemical April 7 through 7.5 mg/I 8.28 mg/I Weekly Average Oxygen April 11, 2014 Exceeded Demand Thank you for your attention to this matter. Remedial actions should be taken to correct the cause(s) of this violation. Unresolved violations may lead to the issuance of a Notice of Violation and/or assessments of civil penalties. If you have any questions or require any additional information, please contact Jenny Graznak at (336) 771-5000 or at jienny.graznak@ncdenr.gov. Cc: WSRO Central Files Sincerely, Sherri V. Knight, P.E., Assistant Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDENR Division of Water Resources, Winston-Salem Regional Office 585 Waughtown Street, Winston-Salem, North Carolina 27107 Phone: 336-771-50001 Internet: www.ncwater.org An Equal Opportunity 1 Affirmative Action Employer — Made in part by recycled paper EFFLUENT NPDES PERMIT NO. NC 0021474 DISCHARGE NO: 1 MONTH April YEAR 2014 FACILITY NAME MEBANE WASTEWATER TREATMENT FACILITY CLASS 4 COUNTY ALAMANCE OPERATOR IN RESPONSIBLE CHARGE (ORC) Dennis Hodge GRADE 4 PHONE 919-563-6141 CERTIFIED LABORATORIES (1) MEBANE (2) MERITECH INC. (3) R&A LABORATORY, Inc. CHECK BOX IF ORC HAS CHANGED O PERSONS COLLECTIIN .tS.�t~iV . a: i a �••.' � a � �..,-�� �: (�•f?�'.Ut. qF k�PdF'1 a �`. Mail ORIGINAL and ONE COPY to: ATTN: Central Files Y"$) NC DENR/DIV OF WATER QUALITY MAY 2u14 b^linstun-Salem S fl WATER QUALITY SECTION r rLI (SIGNATURE OF 01 R LE C ARGE) DATE 1617 MAIL SERVICE CENTER yDW(,),/80G BY THIS SIGNATURE I RTIFY THAT THIS REPORT IS ACCURATE RALEIGH, NC 27699 -1617 AND COMPLETE TO THE BEST OF MY KNOWLEDGE 50050 00010 00400 50060 00310 00610 00530 31616 00300 00600 00665 01034 01042 71900 D A T E Oper Arrival Time Oper Time On Site ORC On Site FLOW Temp Celsius Daily pH Daily Resd CL Daily BODS 20 C Daily NH3 Daily TSS Daily FECAL COLI (geo .mean) D.O. Daily Total Nitrogen 1/wk Total P 1/wk Total Cr NA Total Cu 2/mth• Hg Eff Inf X_ Daily Rate Hrs Hrs Y/N MGD C SU UG/L MG/L MG/L MG/L #1100ML MG/L MG/L MG/L UG/L UG/L UG/L 1 700 10.0 Y 1.271 13 7.0 <15 5.9 0.84 3.5 32 9.0 0.39 0.00178 2 620 10.8 Y 1.228 14 7.0 <15 3.1 0.90 4.4 28 8.7 3.00 0.48 <2.0 3 625 10.8 Y 1.217 15 7.0 <15 3.9 1.44 4.2 31 8.8 0.66 4 614 10.9 B 1.239 15 7.1 <15 4.0 1.23 3.7 4 8.4 0.57 5 1.255 6 1.176 7 700 10.0 Y 1.197 13 6.9 <15 10.6 0.45 8.9 >2420 7.6 0.45 8 630 10.7 Y 3.615 14 6.8 <15 17.6 2.53 21.2 49 8.6 1.20 9 620 10.8 Y 1.848 14 6.8 <15 5.2 0.17 7.2 17 8.7 1.87 0.43 10 625 10.8 Y 1.457 14 6.8 <15 4.0 1.67 6.2 1 8.6 0.87 0.00277 11 618 10.8 B 1.379 15 6.8 <15 4.01 0.38 5.9 5 8.6 0.43 12 1.333 13 1.243 14 700 10.0 Y 1.281 17 6.8 <15 5.3 0.57 5.6 20 8.2 0.49 15 615 10.9 Y 1.367 18 6.8 <15 2.1 0.55 3.8 30 7.5 0.47 16 620 10.8 Y 2.233 14 6.8 <15 2.9 0.73 <2.5 <1.0 9.0 2.05 0.56 <2.0 17 615 10.9 Y 1.493 13 6.8 <15 2.9 < A <2.5 1 9.1 0.30 0.00144 18 1.367 p 19 1.686 20 1.695 21 615 10.9 B 1.372 14.10 6.8 <15 4.3 0.32 2.7 1 8.9 0.44 22 700 10.0 Y 1.324 15 6.9 <15 3.0 0.56 2.7 10 8.6 0.45 23 618 10.8 Y 1.312 16 6.9 <15 3.2 0.22 <2.5 2 8.6 1.84 0.44 < 5.0 <2.0 24 620 10.8 Y 1.244 15.00 7.0 <15 2.5 0.15 <2.5 6 8.8 0.34 0.00156 25 618 10.8 B 1.244 15 6.9 <15 3.2 0.14 <2.5 5 8.9 0.77 26 1.348 27 1.217 28 653 10.5 Y 1.164 17 6.9 <15 3.4 0.82 <2.5 <1.0 8.5 1.14 0.00216 29 617 10.8 Y 1.242 16 7.2 <15 2.6 1.04 <2.5 6 8.7 1.08 30 620 10.8 Y 1.258 17 7.3 21 3.0 0.30 <2.5 488 8.4 2.59 0.93 31 AVERAGE 1.444 15 1 4.6 0.714 3.80 10 8.6 2.27 0.61 < 5.0 <2.0 0.00194 MAXIMUM 3.615 18 7.3 21 17.6 2.53 21.20 >2420 9.1 3.00 1.20 < 5.0 <2.0 0.00277 MINIMUM 1.164 13 6.8 <15 2.1 < .1 <2.5 <1.0 7.5 1.84 0.30 < 5.0 <2.0 0.00144 TOTAL FLOW 43.305 Grab Grab Grab Comp Comp Comp Grab Grab Comp Comp Comp Comp Grab Monthly Limit Apr - Oct2.5 6 - 9 17 5 2 30 200 > 6.0 0.012 Monthly Limit Nov- Ma 10 4 UtM corm MK-1 (vluu) r1litFV y. M�wwv Parameter DMR Review Record Permit No.: NCCOo-11%y- Pipe No.: Monthly Average Violations Permit Limit DMR Value Weeklv/Daily Violations Month[Year: Action Date Parameter Permit Limit Limit Type DMR Value % Over Limit Action -7.5 -,,�A Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Action Other Violations/Staff RemArks: v?V- aye; is--� �M��--+e�,��� s (��—� hey►-� f y��o(3 t /,At (y - NbV 4� Supervisor Remarks: ^ � () n — �� `, 1 _ L—u _C)0 �42 Completed by: J�Alr\ Nt> Assistant Regional Supervisor Sign Off: Regional Supervisor Sign Off: Date:61 Date: Date: A VA NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor April 9, 2014 Mr. David Cheek, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: Notice of Violation (NOV-2014-LV-0171) NPDES Permit No. NCO021474 City of Mebane Wastewater Treatment Plant Alamance County Dear Mr. Cheek: John E. Skvarla, III Secretary A review of the self -monitoring report for the month of January 2014 revealed the following violation of permit limits: Parameter Date Limit Value Reported Value Limit Type Fecal coliform December 30, 2013 400#/100ml 489.45#/100ml Weekly Average thru Exceeded January 3, 2014 Thank you for your attention to this matter. Remedial actions should be taken to correct the cause(s) of this violation. Unresolved violations may lead to the assessment of civil penalties. If you have any questions or require any additional information, please contact Jenny Graznak at (336) 771-5000 or at ienny.graznak@ncdenr.eov. Cc: WSRO Central Files Sincerely, X14U4.1t. -Y. Sherri V. Knight, P.E., Assistant Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDENR Division of Water Resources, Winston-Salem Regional Office 585 Waughtown Street, Winston-Salem, North Carolina 27107 Phone: 336-771-50001 Internet: www.ncwater.org An Equal Opportunity 1 Affirmative Action Employer— Made in part by recycled paper DMR Review Record 1 PaeiriiG'GutiO �Uvv ► T Permit No.: NCCC)Q I i Pipe No.: Monthftar:JQ�, Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit Action eekl ,Daily Violations Date Parameter Permit Limit Limit Type DMR Value % Over Limit Action Monitorinq Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Action er Violations/Staff Remarks: rc 0 Cv I clUe --{� -F a (. aoL Supervisor Remarks: RV NcN-PIq LV-01-71 Completed by: ►-� %�1lL Date: 114 /-,10 Assistant Regional Supervisor Sign Off: Date: Regional Supervisor Sign Off: Date: FV VNPDESERMIT EFFLUENT F719 Z011 NO. NC 0021474 DISCHARGE NO: 1 MONTH December YEAR 2013 FACILITY NAME MEBANE WASTEWATER TREATMENT FACILITY CLASS 4 COUNTY KALAMANCE OPERATOR IN RESPONSIBLE CHARGE (ORC) Dennis Hodge GRADE 4 PHONE 919-563-6141 CERTIFIED LABORATORIES (1) MEBANE (2) MERITECH INC. (3) R&A LABORATORY, Inc. CHECK BOX IF ORC HAS CHANGED PERSONS COLLECTING SAMPLES OPERATORS -OEM. adlika e; w M1l ^ A Mail ORIGINAL and ONE COPY to: r1FE8 ATTN: Central Files 0 3 2014ECEI FEB��Ci �. 2�'S;1 1 ,4f .Dept. NC DENR/DIV OF WATER QUALITY WATER QUALITY SECTION r ' "' (SIGNATURE OF OPEATOR IN RESPONSIBLE CHARGE) 1617 MAIL SERVICE CENTER " w'' '� BY THIS SIGNATURE I CERTIFY THAT THIS REPORT ISACC, RALEIGH, NC 27699 -1617 AND COMPLETE TO THE BEST OF MY KNOWLEDGq VED of ENR I/Vinston-5alem 50050 00010 00400 50060 00310 00610 00530 31616 00300 00600 00665 01034 01042 71900 D A T E Oper Arrival Time Oper Time On Site ORC On Site FLOW Temp Celsius Daily pH Daily Resd CL Daily BOD5 20 C Daily NH3 Daily TSS Daily FECAL COLI (geo mean) D.O. Daily Total Nitrogen 1/wk Total P 1/wk Total Cr NA Total Cu 2/mth Hg Eff Inf X_ Daily Rate Hrs Hrs Y/N MGD C SU UG/L MG/L MG/L MG/L #/100ML MG/L MG/L MG/L UG/L UG/L UG/L 1 1.052 2 700 10.0 Y 1.072 12 7.1 <15 3.8 2.301 4.7 5 9.1 0.45 3 6051 11.0 Y 1.126 13 7.2 <15 6.7 1.20 5.3 7 8.6 0.73 0.00224 4 605 11.0 Y 1.095 14 7.2 <15 4.4 2.20 6.8 4 8.8 4.23 1.28 <2.0 5 605 11.0 Y 1.068 16 7.2 <15 5.6 2.10 4.9 <1.0 8.7 1.09 6 605 11.0 B 1.021 18 7.3 <15 5.1 1.50 5.0 <1.0 8.3 0.95 7 1.351 8 1.108 9 700j 10.0 Y 1.100 13 7.2 <15 7.0 1.20 7.3 152 9.4 0.48 10 600 11.0 Y 1.757 14 7.1 <15 4.2 1.40 3.2 548 8.2 0.38 11 610 10.9 Y 1.798 12 7.0 <15 5.5 2.40 5.5 15 9.2 4.54 0.68 0.00161 12 610 10.9 Y 1.269 12 7.1 <15 < 2.0 0.70 2.9 4 9.4 0.39 13 610 10.9 B 1.053 11 7.1 <15 < 2.0 1.80 3.1 1 9.5 0.50 14 1.193 15 1.781 16 616 10.8 Y 1.328 12 7.0 <15 3.2 1.50 6.0 2 9.5 0.55 17 610 10.9 Y 1.148 12 7.1 <15 2.1 1.10 3.4 2 9.5 0.50 0.00115 18 610 10.9 Y 1.244 12 7.2 <15 4.6 1.60 7.6 35 9.2 3.76 0.64 <2.0 19 637 10.6 Y 1.068 11 7.2 <15 2.5 1.20 3.3 5 9.4 0.71 20 610 10.9 B 1.218 12 7.2 <15 < 2.0 1.40 4.7 10 9.5 1.10 21 1.140 22 j 1.097 23 612 10.9 B 1.575 18 7.1 <15 5.5 2.80 5.4 222 8.3 4.00 1.59 24 2.710 25 1.429 26 1115 1.0 Y 1.059 27 615 10.9 Y 1.183 11 7.2 <15 3.3 1.30 5.0 8 9.8 0.21 0.00165 28 1.206 <2.78 29 1.466 3.1 30 600 11.0 B 2.965 13 6.9 <15 < 2.0 2.10 6.2 >2420 9.1 1.40 311 6201 10.81 B 1.546 12 7.1 <15 6.6 0.30 5.1 104 9.5 2.54 0.69 0.00268 AVERAGE 1.362 13 0 3.7 1.584 4.66 13 9.1 3.81 0.75 <2.0 0.00187 MAXIMUM 2.965 18 7.3 <15 7.0 2.80 7.55 >2420 9.8 4.54 1.59 <2.0 0.00268 MINIMUM 1.021 11 6.9 <15 < 2.0 0.30 <2.78 <1.0 8.2 2.54 0.21 <2.0 0.00115 TOTAL FLOW 42.226 Grab Grab Grab Comp Comp Comp Grab Grab Comp Comp Comp Comp Grab Monthly Limit Apr - Oct 2.5 6-9 17 5 2 30 200 > 6.0 0.012 Monthly Limit Nov- Mai I 1 10 4 DEM Form MR-1 (9/00) EFFLUENT # 'qqN NP" DES'PERMIT NO. NC 0021474 DISCHARGE NO: 1 MONTH January YEAR 2014 FACILITY NAME MEBANE WASTEWATER TREATMENT FACILITY CLASS 4 COUNTY ALAMANCE OPERATOR IN RESPONSIBLE IVED is Hodge GRADE 4 PHONE 919-563-6141 CERTIFIED LABORATORIES N.C.Dept. ofENR (1) IY EBANE (2) MERITECH INC. (3) R&ALABORATORY CHECK BOX IF ORC HAS CHAh GED AM 0 12014 PER ONS COLLECTING SAMPLES OPERA N%4 Mail ORIGINAL and ONE COPY S MAR 2 4 2014 cr- ATTN: Central Files '-. _-- 2 0 2M NC DENR/DIV OF WATER QUALITY MAR 0 5 2014 q WATER QUALITY SECTION SIGNA RE OF OR IN RESPONSIBLE CHARGE) DATE 1617 MAIL SERVICE CENTER CENTRAL F1Lai' THIS SIGNATUR I CERTIFY THAT THIS REPORT IS ACCURATE RALEIGH, NC 27699 -1617 QWQIB®G AND COMPL E TO THE BEST OF MY KNOWLEDGE 50050 00010 00400 50060 00310 00610 00530 31616 00300 00600 00665 01034 01042 71900 D A T E Oper Arrival Time Oper Time On Site ORC On Site FLOW Temp Celsius Daily pH Daily Resd CL Daily BOD5 20 C Daily NH3 Daily TSS Daily FECAL COLI (geo mean) D.O. Daily Total Nitrogen 1/wk Total P 1/wk Total Cr NA Total Cu 2/mth Hg Eff Inf X Daily Rate Hrs j Hrs Y/N MGD C SU UG/L MG/L MG/L MG/L #/100ML MG/L MG/L MG/L UG/L UG/L UG/L 1 1.395 0jq 2 r-615 11.0 Y 1.167 11 7.2 <15 5.2 1.40 4.3 623 9.2 0.51 3 10.9 Y 1.539 11 7.1 <15 3.8 1.70 3.7 366 9.4 0.86 4 • 1.346 5 1.219 6 700 10.0 Y 1.463 12 7.0 47 5.3 1.40 5.0 343 8.4 0.72 7 605 11.0 Y 1.867 9 7.2 <15 3.9 1.40 4.6 6 10.4 1.15 0.00218 8 605 11.01 Y 1.385 9 7.1 30 3.9 0.30 3.3 32 10.0 4.96 0.68 <2.0 9 610 10.9 Y 1.385 10 7.1 <15 2.4 1.00 3.4 691 9.8 10 620 10.8 B 1.333 11 7.2 <15 3.3 0.80 4.6 23 9.8 0.97 11 2.277 12 3.707 13 700 10.0 Yj 1.737 12 6.8 <15 5.9 0.30 8.9 12 9.1 0.59 14 610 10.9 Yj 1.555 13 7.0 <15 4.7 1.30 6.8 6 8.7 1.12 15 605 11.0 Yj 1.838 12 7.0 <15 4.5 2.10 6.7 4 8.9 3.76 0.52 0.00206 16 605 11.0 Yj 1.494 12 7.1 <15 2.3 0.70 5.1 2 9.5 0.36 17 800 9.0 BI 1.355 111 7.1 <15 < 2.0 0.50 4.4 2 9.6 1 0.38 18 1.375 19 1.246 20 HV 1.181 L Dl3 21 6631 10.51 Y 1.1711 10.90 7.1 <15 6.3 1.30 5.9 <2 9.4 0.53 0.00193 22 615 10.9 Y 1.226 10 7.2 <15 5.2 0.40 2.9 66 10.1 2.54 0.50 <2.0 23 610 10.9 Y 1.153 9 7.2 <15 4.3 0.20 2.9 43 10.1 0.51 24 618 10.8 B 1.155 8.10 7.2 115 3.7 0.30 3.6 6 10.5 0.70 25 1 1 1.178 26 1.171 27 700 10.0 Y 1.144 10 7.2 <15 4.0 1.90 4.5 2 9.5 1.34 281 6201 10.8 Y 1.180 101 7.2 <15 4.4 1.80 4.4 4 9.9 1.24 29 615 10.9 Y 1.115 8 7.2 <15 4.0 1.24 3.6 <2 10.5 3.37 1.25 < 5.0 <2.0 0.00221 30 615 10.9 Y 1.114 7 7.2 <15 3.1 1.60 4.8 2 10.5 1.95 31 612 10.9 B 1.157 8 7.1 <15 2.8 1.20 3.3 48 9.9 1.51 AVERAGE 1.440 10 4 3.9 1.088 4.581 16 9.7 3.66 0.87 < 5.0 <2.0 0.00210 MAXIMUM 3.707 13 7.2 47 6.3 2.10 8.86 691 10.5 4.96 1.95 < 5.0 <2.0 0.00221 MINIMUM 1.114 7 6.8 <15 < 2.0 0.20 2.9 <2 8.4 2.54 0.36 < 5.0 <2.0 0.00193 TOTAL FLOW 44.628 Grab Grab i Grab Comp Comp Comp Grab Grab Comp Comp Comp Comp Grab Monthly Limit Apr - Oct2.5 6-9 17 5 2 30 200 > 6.0 0.012 Monthly Limit Nov- Ma 10 4 Licro roan mR-i taiw) Graznak, Jenny From: Dennis Hodge <dhodge@cityofinebane.com> Sent: Thursday, April 10, 2014 3:12 PM To: Graznak, Jenny Subject: Mebane Storm Event Good Morning Jenny, Hope your day is going well. I'm following up on the phone message that I left you on Tuesday of this week. On Monday the Mebane area received 2 inches of rain over about 8 hours. This caused a huge increase in the incoming flow to the WWTP. Based on our flow meter measurements our influent flow peaked at over 8 MG for about 2-3 hours. Our 24 hour flow for Monday was just under 3.7 MGD. Our new effluent filters are designed for a peak flow of 8.0 MG so they were overwhelmed with the additional flow. The effluent TSS for the day was around 21.2 mg/L and the day following was 7.17 mg/L. The fecal coliform was >2419.6 colonies/100 mis for Monday and 49 colonies/100 mis for Tuesday. Considering the amount of water that came through the plant responded better than I expected. If you have any questions or need more information don't hesitate to contact me. Have a great weekend! Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.ci!yofmebane.com E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. '~It la odt 4 9i eap 9mOfOK4 �ww de me e6 01a4­l Oe 94t we dame- Arow deo 94t f*w ta. " �. '%taruwac PPFFF, P aznak, Jenny From: Dennis Hodge <dhodge@cityofinebane.com> Sent: Wednesday, March 12, 2014 6:37 PM To: Graznak, Jenny Subject: RE: NCDENR - NPDES Forms & Documents Attachments: 03122014MebaneStorm Response.pdf Hey Jenny, I hope you've made it through flurry of phone calls. As per our conversation on Monday, March 10, 2014 1 am attaching the Bypass/Upset Form. As you are aware Alamance County experienced a major storm event on March 6 & 7, 2014. Including the ice and sleet our area received 3.1 inches of precipitation. The WWTP lost power around 3:00 AM on March 7, 2014. Our back-up power generator initiated immediately maintaining power throughout the plant. Around 3:00 AM on March 8 our generator stopped generating full power. We called in emergency electrical and generator personnel and they started working around 6:15AM. We were able to get the generator back up around 12:00 PM. From 9:30 to 12:00 we used a small generator to power our chemical feed pumps in order to feed sodium hypochlorite and bisulfite before being discharged. There was a period from 3:00 to 9:30 that chlorination and dechlorination was not being feed because of the generator power outage. In the course of the event until around 7:15 PM Sunday the generator shut down two other times for shorter periods. One being around 1:15 AM to 6:15 AM and the other around 4:15 PM to 7:15 PM. During these periods an additional 671,700 gallons was discharged without chemical addition. Because our plant has been acclimated to run under low dissolved oxygen conditions the effect to the biological treatment process appeared to be minimal. Results from samples taken from the discharge of our disc filters were: 3/8/14 Composite —TSS 18.0 mg/L, *NH3N 0.8 mg/L 3/9/14 Composite —TSS 3.8 mg/L, *NH3N 2.4 mg/L Effluent samples: 3/10/14 Composite —TSS 14.5 mg/L,* NH3N 5.4 mg/L Grab - Fecal coliform 1.0 colonies/100 mis 3/11/14 Composite — TSS 5.1 mg/L,* NH3N 1.6 mg/L Grab - Fecal coliform 46.2 colonies/100m1s *Using Hach test kit The plant rented a portable generator on Sunday that was installed and placed in service at 7:15PM. Duke Power was back on line around 2:00 PM Monday. Mebane is keeping the portable generator on line until we install a new generator that we are currently working with vendors to purchase. If you have any questions please do not hesitate to call me. Have a great evening. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.cityofmebane.com From: Graznak, Jenny[mailto:jenny.graznak@ncdenr.gov] Sent: Monday, March 10, 2014 1:41 PM To: Dennis Hodge Subject: NCDENR - NPDES Forms & Documents Dennis — the bypass form we discussed earlier can be found on this website under the Discharge Monitoring Reports section: http://Portal.ncdenr.org/web/wq/swp/ps/npdes/forms Also, SSOs (and other types of spills) occurring outside normal business hours may be reported to the Division of Emergency Management at telephone number (800) 858-0368. Thanks! Jenny Graznak E-mail Address: Lnny.graznak@ncdenr.�ov NCDENR Division of Water Resources Winston-Salem Regional Office 585 Waughtown Street, Winston-Salem, NC 27107 (336) 771-4960; fax (336) 771-4630 www.ncwaterguality.org E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. EMPFF, aF WNA' .Q QG� Form WWTP-BYPASS/UPSET r Treatment Plant (WWTP) Bypass/Upset Reporting Form 5 Day Report o PART This form shall be submitted to the appropriate DWQ Regional Office wi&Wn five days of the first knowledge of the unanticipated bypass or upset. Permit Number: Ile �/0 �� Facility: + W 44W AWL Owner: L City: (Always use treatment plant permit number) Incident #: Region: Ivj5AP County: *Iel- e SPECIFIC location of the treatment units bypassed or/where the upset occurred in the facility: Was the WWTP compliant with permit requirements? OYes 0 No Were samples taken during bypass? OYes ❑ No Incident Start Dt: 0-M-19H Time: *lid -Al_ (mm-dd-yyyy) (hh.mm AWPM) Estimated volume of the bypass/upset: 1 Describe how the volume was determined: 11 BLInknown Mnknown Incident End Dt: 03 `004*1Y Time: (mm-dd-yyyy) (hh:mm AWPM) r. gallons Weather conditions during bypass/upset event: f}'G+foYs 3� ! OvJ2 Did bypass/upset reach surface waters? Wes C] No OUnknown Volume reached surface waters (gallons): Surface water name: Did the bypass/upset result in fish kill? OYes tirNo OUnknown If YES, estimated number of fish killed: SPECIFIC cause(s) of the bypass/upset: To'r- SriyM "% IiQk+I o�► a. .� A G Person submitting Signature: Telephone: As a representative for the responsible party. ! certify that the information contained in this report is true and aerate to the best of my knowledge. Is -1 (.0 1d Ct 0 IP - 5S,40 3 Title: as,ku Zi r ' Any additional information desired to be submitted should be sent to the appropriate Division Regional Office within five (5) days of first knowledge of the bypass with reference to the incident number (the incident number is only generated when electronic entry of this form is completed, if used). WWTP-BypaestUpset Form October 17, 2011 Page 1 Graznak, Jenny From: Darrell Russell <drussell@awck.com> Sent: Wednesday, March 12, 2014 4:55 PM To: Graznak, Jenny Cc: Dennis Hodge (dhodge@cityofinebane.com) Subject: City of Mebane -Final FIlter Replacement Authorization to Construct No 021474A01 Good afternoon Jenny, As required under the subject Authorization to Construct, notice is required to be given to the Regional Office at the time of completion. The filters have been tested and we now consider them complete. If you would like to make an inspection of these facilities, please contact Dennis Hodge at the Mebane WWTP and he will gladly assist you. Thank you for your assistance and if you have any questions, please let me know. Darrell Russell, P.E. Alley, Williams, Carmen & King, Inc. Engineers and Architects Tel. 336-260-5449 Email-drussell@awck.com LTIKWJ NCDEE R North Carolina Department of Environment and Natural Resources Division of Water Resources Water Quality Programs Pat McCrory Thomas A, Reeder Governor Director August 16, 2013 Mr. David Cheek, City Manager City of Mebane 106 E. Washington Street Mebane, North Carolina 27302 Subject: Compliance Evaluation Inspection NPDES Permit No. NCO021474 City of Mebane Wastewater Treatment Plant Alamance County Dear Mr. Cheek: John E. Skvarla, III Secretary Jenny Graznak of this office performed a Compliance Evaluation Inspection at the Mebane WWTP in Alamance County on August 14, 2013. Dennis Hodge, Operator in Responsible Charge (ORC), was present for the inspection. This type of inspection consists of two basic parts: an in - office review of facility files and self -monitoring data and an on -site inspection of the facility. This particular inspection evaluated nine (9) areas, and observations from each area are addressed below: 1. Permit The City of Mebane's permit expired on May 31, 2011. A draft of the new permit was released on August 15, 2012. However, the final version of the permit has not yet been issued by the Division. Please continue to operate under your old permit until the new permit is issued. 2. Self -Monitoring Program A review of the self -monitoring data submitted for the period of June 2012 through May 2013 showed that all parameters were sampled and analyzed per the requirements of the permit except for Dissolved Oxygen and Temperature on the December 2012 Discharge Monitoring Report (DMR) due to an oversight. Limit violations were noted on the DMRs for September and October 2012 as well as January and April 2013. These violations were addressed in previous correspondence from this office. Please see the attached list of the City's violations during this time period. 3. Laboratory The plant's on -site laboratory (#138) is certified for the following permit parameters: Total Residual Chlorine, Fecal Coliform, Conductivity, Dissolved Oxygen, Total Phosphorus, pH, Total Suspended Solids, and Temperature. All lab data, chain of custody forms, confirmation of meter calibrations, and thermometer verification were available during the inspection. Amy Varinoski is the Lab Supervisor, and Amanda Hill is the Lab Technician. R & A Laboratories analyzes Metals, BOD, Ammonia, and Fluoride for the plant. Meritech, Inc. analyzes all other Nutrients, Mercury, and Chronic Toxicity. North Carolina Division of Water Resources, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-5000 \ FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: www.ncwaterquality.org NorthCarolina An Equal Opportunity \ Affirmative Action Employer ��q 4. Flow Measurement Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated quarterly by Instrument Specialists, Inc. Verification of the last calibration event, which occurred on June 14, 2013, was available during the inspection. 5. Sludge Handlinq and Disposal The plant has two sludge digesters. Approximately four times per year, Synagro brings a portable belt press on site to create sludge cakes, which are then transported to the McGill compost facility in New Hill, North Carolina. Synagro removes approximately 550,000 to 600,000 gallons from the sludge digesters during each press event. 6. Operations & Maintenance Dennis Hodge is the ORC, and Anthony Bowes and Amy Varinoski are Back -Up ORCs. Operation and maintenance at the facility appear to be excellent. The plant operates a preventative maintenance database: Hach JOB Cal. Maintenance staff issues work orders once per month and more frequently for repairs, etc. A SCADA system is used to monitor some operations at the plant, such as process control parameters. The plant has a 250-kW generator that can operate the entire plant except the digesters. The generator is run once per month under load and once per week for maintenance purposes. 7. Facility Site Review Plant influent is screened and metered. The plant includes two large aerations basins. Only one is currently used as for aeration with six 2-speed surface aerators. The other basin is used to hold filtrate from the sludge press that is gradually fed back into the plant. This basin was used for sludge storage in the past, but it is being gradually pumped down by Synagro so that it will eventually provide additional capacity for the plant and can act as an equalization basin during significant rain events. The plant also includes three clarifiers, two sand filters (soon to be replaced), chlorination, and dechlorination. A small building contains the tanks of liquid chlorine and liquid sodium bisulfate. 8. Records/Reports The DMRs, files, operators' logs, and lab data are maintained according to the permit. A copy of this data was available for review during the inspection. Plant data and records are very well organized and maintained. 9. Effluent/Receivinq Waters The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. The facility was found to be in compliance with NPDES Permit No. NC0021474. We appreciate the City's efforts to comply with the requirements of this permit. Please refer to the attached report for specific details from the inspection. If you have any questions concerning this report, please contact Ms. Graznak or me at (336) 771-5000. Sincerely, r W. Corey Basinger Regional Supervisor Surface Water Protection Section cc: WSRO — SWP Central Files — SWP ppppppp, CITY OF MEBANE NCO021474 MONITORING REPORT VIOLATIONS JUNE 2012 — MAY 2013 Parameter Date Permit Limit Reported Violation Type Violation Value Action Total Residual September 7, 17 ug/I 67 ug/I Daily Maximum Notice of Chlorine 2012 Exceeded Deficiency Biochemical October 22-26, 7.76 mg/I 7.5 mg/I Weekly Average Notice of Oxygen 2012 Exceeded Violation Demand Biochemical October 2012 5.4 mg/I 5 mg/I Monthly Average Notice of Oxygen Exceeded Violation Demand Temperature December 15, 5 x week 4 x week Frequency Violation Notice of 2012 Deficiency Dissolved December 15, 5 x week 4 x week Frequency Violation Notice of Oxygen 2012 Deficiency Ammonia January 28-31, 12 mg/I 14.25 mg/I Weekly Average Notice of Nitrogen 2013 Exceeded Violation Ammonia January 2013 4.0 mg/l 6.9 mg/I Monthly Average Notice of Nitrogen Exceeded Violation Biochemical April 1-5, 2013 7.5 mg/I 9.38 mg/I Weekly Average Notice of Oxygen Exceeded Violation Demand Ppr- Pppp- United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 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 LI 2 I s I 31 NCO021474 111 121 13/08/14 117 18I C I 19I S I 20 I U Remarks 21111111111111111111IIIIII1111IIIIIIII IIIIIIIIIII6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ----------------Reserved------------- — 671 169 70IJ 71 U 72I N 73L1J 74 75I III I I 1180 —! 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 permit Number) 09:30 AM 13/08/14 10/08/01 Mebane WWTP Exit Time/Date Permit Expiration Date 635 Corregidor Rd Mebane NC 27302 12:00 PM 13/08/14 11/05/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data /// Dennis James Hodge/ORC/919-304-9215/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Linda R Holt,106 E Washington St Mebane NC 27302//919-563-6141/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenance Records/Reports Self -Monitoring Program Sludge Handling Disposal 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 Jennifer F Graznak WSRO WQ//336-771-5000/ 81t61*,Y3 p �� �[.� �- .4 X' Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date Dom-- • (47 4w 2413 EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 NPDES yr/mo/day 3 1 NC0021474 111 121 13/08/14 117 Inspection Type 18U C ",qqq (cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) 1. Permit The City of Mebane's permit expired on May 31, 2011. A draft of the new permit was released on August 15, 2012. However, the final version of the permit has not yet been issued by the Division. Please continue to operate under your old permit until the new permit is issued. 2. Self -Monitoring Program A review of the self -monitoring data submitted for the period of June 2012 through May 2013 showed that all parameters were sampled and analyzed per the requirements of the permit except for Dissolved Oxygen and Temperature on the December 2012 Discharge Monitoring Report (DMR) due to an oversight. Limit violations were noted on the DMRs for September and October 2012 as well as January and April 2013. These violations were addressed in previous correspondence from this office. Please see the attached list of the City's violations during this time period. 3. Laboratory The plant's on -site laboratory (#138) is certified for the following permit parameters: Total Residual Chlorine, Fecal Coliform, Conductivity, Dissolved Oxygen, Total Phosphorus, pH, Total Suspended Solids, and Temperature. All lab data, chain of custody forms, confirmation of meter calibrations, and thermometer verification were available during the inspection. Amy Varinoski is the Lab Supervisor, and Amanda Hill is the Lab Technician. R & A Laboratories analyzes Metals, BOD, Ammonia, and Fluoride for the plant. Meritech, Inc. analyzes all other Nutrients, Mercury, and Chronic Toxicity. 4. Flow Measurement Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated quarterly by Instrument Specialists, Inc. Verification of the last calibration event, which occurred on June 14, 2013, was available during the inspection. 5. Sludge Handling and Disposal The plant has two sludge digesters. Approximately four times per year, Synagro brings a portable belt press on site to create sludge cakes, which are then transported to the McGill compost facility in New Hill, North Carolina. Synagro removes approximately 550,000 to 600,000 gallons from the sludge digesters during each press event. 6. Operations & Maintenance Dennis Hodge is the ORC, and Anthony Bowes and Amy Varinoski are Back -Up ORCs. Operation and maintenance at the facility appear to be excellent. The plant operates a preventative maintenance database: Hach JOB Cal. Maintenance staff issues work orders once per month and more frequently for repairs, etc. A SCADA system is used to monitor some operations at the plant, such as process control parameters. The plant has a generator that can operate the entire plant except the digesters. The generator is run once per month under load and once per week for maintenance purposes. Page # 2 pppppp, Permit: NCO021474 Owner - Facility: Mebane WWTP Inspection Date: 08/14/2013 Inspection Type: Compliance Evaluation 7. Facility Site Review Plant influent is screened and metered. The plant includes two large aerations basins. Only one is currently used as for aeration with six 2-speed surface aerators. The other basin is used to hold filtrate from the sludge press that is gradually fed back into the plant. This basin was used for sludge storage in the past, but it is being gradually pumped down by Synagro so that it will eventually provide additional capacity for the plant and can act as an equalization basin during significant rain events. The plant also includes three clarifiers, two sand filters (soon to be replaced), chlorination, and dechlorination. A small building contains the tanks of liquid chlorine and liquid sodium bisulfate. 8. Records/Reports The DMRs, files, operators' logs, and lab data are maintained according to the permit. A copy of this data was available for review during the inspection. Plant data and records are very well organized and maintained. 9. Effluent/Receiving Waters The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. Page # 3 "�q Permit: NCO021474 Inspection Date: 08/14/2013 Owner - Facility: Mebane 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 Solids, pH, DO, Sludge ■ ❑ ❑ ❑ Judge, and other that are applicable? Comment: Operation and maintenance at the facility appear to be excellent. 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? ■ ❑ ❑ ❑ Comment: The City of Mebane's permit expired on May 31, 2011. A draftof the new permit was released on August 15, 2012, however, the final version of the permit has not yet been issued . 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 # 4 Permit: NCO021474 Inspection Date: 08/14/2013 Owner - Facility: Mebane WWTP Inspection Type: Compliance Evaluation Record Keeping Is a copy of the current NPDES permit available on site? Facility has copy of previous year's Annual Report on file for review? Comment: Effluent Pipe 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? Comment: The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. 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? Comment: Verification of the last calibration, which occurred on June 14, 2013, was available during the inspection. Aerobic Digester 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? Comment: r2-- L------ Type of bar screen ■❑❑❑ n❑❑■ Yes No NA NE Yes No NA NE a.Manual ❑ b.Mechanical ■ Are the bars adequately screening debris? ■ ❑ ❑ ❑ Is the screen free of excessive debris? ■ ❑ ❑ ❑ Is disposal of screening in compliance? ■ ❑ ❑ ❑ Page # 5 -4,qqq Permit: NCO021474 Owner - Facility: Mebane WWTP Inspection Date: 08/14/2013 Inspection Type: Compliance Evaluation Bar Screens Yes No NA NE Is the unit in good condition? ■ ❑ ❑ ❑ 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? ■ ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? ■ ❑ ❑ ❑ Is the overflow clear -of excessive solids/pin floc? ■ ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately Y. of the sidewall depth) ❑ ❑ ❑ ■ Comment: Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Surface 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/1) ❑ ❑ ■ ❑ Comment: DO in aeration is typically less than 1.0 in most areas of basin. Plant has been working with NCSU to determine why they achieve denitrification with such a low DO. Possibly because of different zones within basin created by surface aerators and their running time, etc. Funding for this project got pulled because of budget cuts. Filtration (High Rate Tertiary) Yes No NA NE Page # 6 Permit: NCO021474 Owner - Facility: Mebane WWTP Inspection Date: 08/14/2013 Inspection Type: Compliance Evaluation Filtration (High Rate Tertiary) Yes No NA NE Type of operation: Up flow Is the filter media present? ■ Q 0 0 Is the filter surface free of clogging? ■ ❑ Is the filter free of growth? ■ ID ❑ Q Is the air scour operational? Q Is the scouring acceptable? ■ ❑ ❑ Is the clear well free of excessive solids and filter media? ■ ❑ 0 Comment: The sand filters will be upgraded soon. De -chlorination Yes No NA NE Type of system ? Liquid Li q Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ Q ❑ ■ Is storage appropriate for cylinders? ■ n Q El # Is de -chlorination substance stored away from chlorine containers? 0 ■ Q 0 Are the tablets the proper size and type? 00013 Comment: A small building contains the tanks of liquid chlorine and liquid sodium bisulfate. Are tablet de -chlorinators operational? 0 ❑ ■ Q Number of tubes in use? Comment: . Standby Power Yes No NA NE Is automatically activated standby power available? 0110 O Is the generator tested by interrupting primary power source? ■ Q ❑ ❑ Is the generator tested under load? ■ ❑ ❑ Q Was generator tested & operational during the inspection? ❑ ■ O 0 Do the generator(s) have adequate capacity to operate the entire wastewater site? ❑ ■ ❑ Q Is there an emergency agreement with a fuel vendor for extended run on back-up power? ■ Q ❑ ❑ Is the generator fuel level monitored? ■ 0 O 0 Comment: The plant has a 250-kW generator that can operate the entire plant except the digesters. The generator is run once per month under load and once per week for maintenance purposes. Page # 7 Permit: NCO021474 Inspection Date: 08/14/2013 Owner - Facility: Mebane WWTP Inspection Type: Compliance Evaluation Disinfection -Liquid Is there adequate reserve supply of disinfectant? (Sodium Hypochlorite) Is pump feed system operational? Is bulk storage tank containment area adequate? (free of leaks/open drains) 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: A dark brown film was present in chlorine contact chamber on day of inspection. ORC thought it might be manganese. Currently running tests to determine what it is. Effluent Sampling 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)? Comment: The thermometer in the effluent sampler refrigerator read 4 degrees C. (0 degrees C in influent sampler refrigerator) Yes No NA NE Upstream / Downstream Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? ■ ❑ ❑ Q Comment: In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. Page # 8 Z .� NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Pat McCrory Charles Wakild, P.E. John E. Skvarla, III Governor Director Secretary May 29, 2013 RECEIVED y N.C. Dept. of ENR Mr. David Cheek, City Manager JUN. 0 5 -2013 City of Mebane Wtn.ton•saism 106 E. Washington St. Regional; office Mebane, North Carolina 27302 SUBJECT: Authorization to Construct No. 021474AOI City of Mebane Mebane WWTP Dear Mr. Cheek: A Permit Application package for an Authorization to Construct (ATC) Permit was received May 24, 2013, by the Division of Water Quality (Division). This Authorization to Construct Permit is issued based solely upon the North Carolina Licensed Professional Engineer's certification and the Applicant's certification of the ATC Permit Application package. The Division has waived the technical review of the plans, specifications, calculations and other supporting documentation included in the subject ATC Permit Application package. Note that the ATC Permit Application package may be subject to a Division audit. This ATC results in no increase in design or permitted capacity of the existing 2.5 MGD Mebane WWTP and is hereby issued for the construction of the following specific modifications: Replacement of the existing cell #1 filters with four (4) new cloth media disk filters able to treat a peak flow of 7.5 MGD, in conformity with the project plans, specifications, and other supporting documentation comprising the ATC Permit Application package. This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No. NCO021474 issued July 9, 2011, and shall be subject to revocation unless the wastewater treatment facilities are constructed in accordance with the conditions and limitations specified in Permit No. NC000021474. It is the Owner's responsibility to ensure that the as -constructed project meets the requirements of all applicable regulations and statutes, the ATC Permit Application package, and all of the requirements contained herein. Failure to comply may result in penalties in accordance with North Carolina General Statute § 143-215.6A through § 143-215.6C. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: 919-807-63001 FAX: 919-807-6492 Internet: www.ncwaterguality.oro One NorthCarolina ;Vaturally An Equal Opportunity 1 Affirmative Action Employer Mr. David Cheek May 29, 2013 Page 2 The sludge generated from these treatment facilities must be disposed of in accordance with G.S. 143-215.1 and in a manner approved by the Division. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by the Division, such as the construction of additional or replacement wastewater treatment or disposal facilities. The Winston-Salem Regional Office, telephone number (336) 771-5000, shall be notified at least forty-eight (48) hours in advance of operation of the installed facilities so that an on site inspection can be made. Such notification to the regional supervisor shall be made during the normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays. Upon completion of construction and prior to operation of this permitted facility, a certification must be received from a Professional Engineer certifying that the permitted facility has been installed in accordance with the NPDES Permit and the ATC Permit Application package. Mail the Certification to: Infrastructure Finance Section, DWQ/DENR, 1633 Mail Service Center, Raleigh, NC 27699-1633. Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater treatment facilities. The operator must hold a certificate of the type and grade at least equivalent to or greater than the classification assigned to the wastewater treatment facilities by the Certification Commission. The Permittee must also employ a certified back-up operator of the appropriate type and grade to comply with the conditions of T15A:8G.0202. The ORC of the facility must visit each Class I facility at least weekly and each Class II, III and IV facility at least daily, excluding weekends and holidays, must properly manage the facility, must document daily operation and maintenance of the facility, and must comply with all other conditions of T15A:8G.0202. A copy of the project plans and specifications shall be maintained on file by the Permittee for the life of the facility. During the construction of the proposed additions/modifications, the Permittee shall continue to properly maintain and operate the existing wastewater treatment facilities at all times, and in such a manner, as necessary to comply with the effluent, limits specified in the NPDES Permit. You are reminded that it is mandatory for the project to be constructed in accordance with the North Carolina Sedimentation Pollution Control Act, and when applicable, the North C Mr. David Cheek May 29, 2013 Page 3 Carolina Dam Safety Act. In addition, the specifications must clearly state what the contractor's responsibilities shall be in complying with these Acts. Prior to entering into any contract(s) for construction, the recipient must have obtained all applicable permits from the State. The issuance of this ATC does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. If you have any questions or need additional information, please contact Seth Robertson, P.E. at telephone number (919) 707-9175. Sincerely, Charles Wakild, P.E. MM: sr cc: Darrell L. Russell, P.E., Alley, Williams & King, Inc., PO Box 1179, Bulington, NC 27215 Alamance County Health Department DWQ Winston -Salem Regional Office, Surface Water Protection DWQ, Point Source Branch, NPDES Program Michelle McKay, E.I. ATC File City of Mebane Mebane WWTP Authorization to Construct No. 021474A01 Issued May 29, 2013 Engineer's Certification I, , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the modifications and improvements to the Mebane Wastewater Treatment Plant, located in Alamance County, hereby state that, to the best of my abilities, due care and diligence was used in the observation of the following construction: Replacement of the existing cell #1 filters with four (4) new cloth media disk filters able to treat a peak flow of 7.5 MGD, in conformity with the project plans, specifications, and other supporting documentation comprising the ATC Permit Application package. I certify that the construction of the above referenced project was observed to be built within substantial compliance, intent and in conformity with all applicable regulations and statutes and the project plans, specifications, and other supporting documentation comprising the Authorization to Construct Permit Application package. Signature Date Registration No. Mail this Certification to: Attn: Michelle McKay, E.I. Infrastructure Finance Section DENR/DWQ 1633 Mail Service Center Raleigh, NC 27699-1633 11 Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Thursday, May 23, 2013 1:10 PM To: Graznak, Jenny Cc: Basinger, Corey; Hudson, Gary Subject: RE: Mebane WWTP Good afternoon Jenny, I wanted update you guys as to the status of the April weekly BOD exceedance at the Mebane WWTP. As we reported we exceeded the weekly maximum BOD for the first week in April. The monthly average for April for effluent BOD is 4.5 mg/L. In accordance with our original email (see below) Mebane has taken the following actions in dealing with the cause of the exceedance: 1. Required that The Liggett Group apply for an Industrial User Permit (IUP). The application has been sent to them and they are required to return it by July 31, 2013. 2. In the interim Mebane has required Liggett to submit a "Letter of Acceptance" to continue to discharge until their IUP is issued. 3. Issued a Notice of Significant Noncompliant and a civil penalty of $200.000 against The Liggett Group. 4. The Liggett Group will also be included in Mebane's next Public Notification of Permittees in Significant Non Compliance typically posted in January. Since the occurrence in April there has been no other episodes causing our plant any problems. If you have questions please do not hesitate to call. All correspondence concerning this matter will be included in the submittal of the April 2013 DMR. Have a great weekend and holiday! Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.ci!yofmebane.com From: Dennis Hodge Sent: Monday, April 22, 2013 2:08 PM To: jenny.graznak@ncdenr.gov Cc: corey.basinger@ncdenr.gov; gary.hudson@ncdenr.gov Subject: Mebane WWTP Good afternoon Jenny, 7160" 1 I know that we have discussed this previously but I wanted to follow up with an email concerning the episode with the high strength waste coming into the Mebane WWTP. We have received the result of the effluent BOD sample for 4/5/2013. The results, as reported by Mebane's contract laboratory were 29.3 mg/L, well over our limit of 5.0 mg/L. The effluent BOD weekly average for the first week in April is 9.37 mg/L, which is over the weekly limit of 7.5 mg/L. At approximately 15:45 on Thursday afternoon, 4/4/2013, in -line DO meters in the aeration basin indicated a sharp decline in DO concentrations from —1.0ppm to —0.3ppm, indicating that the plant was receiving a high -strength waste. In order to overcome this drop in DO, all aerators were switched to full -rime, high speed operation. As well, in an attempt to mitigate the effect of the high -strength waste, operations staff diverted a portion of the influent flow from the aeration basin to the POTW's off-line aeration basin. The following morning, composite samples collected at the Influent (4/4/13, 8:14 through 4/5/13, 8:20) and from the Fieldstone Lift -station trunk line, where several of our industries are located, (4/4/13, 13:40 through 4/5/13, 11:03) were analyzed for COD resulting in 828mg/L and 1,480mg/L respectively. These results showed roughly double the typical COD concentration in the Influent and approximately 3.5 times the typical COD concentration from the trunk line. Upon receipt of these COD results, the Pretreatment Coordinator contacted industrial users whose wastestreams discharge to the Fieldstone Lift -station to determine the volume and characteristics of their discharges over the previous 48-hours. While awaiting reply from the LUs, pretreatment and laboratory staff collected grab samples at various locations in the industrial park that discharge to Fieldstone in an attempt to identify the source of the high -strength waste. COD analyses from these grab samples were inconclusive. At 16:48 the Pretreatment Coordinator received an email from Liggett Group, indicating that the facility had discharged an estimated 400 gallons of propylene glycol on Thursday afternoon between the hours of 12:00 and 14:00. Based on the literature values for COD of propylene glycol and the discharge volume reported by Liggett, the Wastewater Director and Pretreatment Coordinator were fairly certain that this was the primary source of the high -strength waste received at the POTW. Therefore, the Wastewater Director and Pretreatment Coordinator met with representatives from Liggett Group the following Tuesday morning to discuss the incident at the WWTP, the circumstances surrounding the discharge of propylene glycol from Liggett, and the protocol for any future discharges from the facility. Although the facility has not previously been permitted, it was decided to move forward with the issuance of an Industrial User Permit. As well, enforcement action will be taken against the facility in accordance with the City's Enforcement Response Plan. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.ci!yofinebane.com Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Monday, April 22, 2013 2:09 PM To: Graznak, Jenny Cc: Basinger, Corey; Hudson, Gary Subject: Mebane WWTP Good afternoon Jenny, I know that we have discussed this previously but I wanted to follow up with an email concerning the episode with the high strength waste coming into the Mebane WWTP. We have received the result of the effluent BOD sample for 4/5/2013. The results, as reported by Mebane's contract laboratory were 29.3 mg/L, well over our limit of 5.0 mg/L. The effluent BOD weekly average for the first week in April is 9.37 mg/L, which is over the weekly limit of 7.5 mg/L. At approximately 15:45 on Thursday afternoon, 4/4/2013, in -line DO meters in the aeration basin indicated a sharp decline in DO concentrations from—1.0ppm to—0.3ppm, indicating that the plant was receiving a high -strength waste. In order to overcome this drop in DO, all aerators were switched to full-time, high speed operation. As well, in an attempt to mitigate the effect of the high -strength waste, operations staff diverted a portion of the influent flow from the aeration basin to the POTW's off-line aeration basin. The following morning, composite samples collected at the Influent (4/4/13, 8:14 through 4/5/13, 8:20) and from the Fieldstone Lift -station trunk line, where several of our industries are located, (4/4/13, 13:40 through 4/5/13, 11:03) were analyzed for COD resulting in 828mg/L and 1,480mg/L respectively. These results showed roughly double the typical COD concentration in the Influent and approximately 3.5 times the typical COD concentration from the trunk line. Upon receipt of these COD results, the Pretreatment Coordinator contacted industrial users whose wastestreams discharge to the Fieldstone Lift -station to determine the volume and characteristics of their discharges over the previous 48-hours. While awaiting reply from the IUs, pretreatment and laboratory staff collected grab samples at various locations in the industrial park that discharge to Fieldstone in an attempt to identify the source of the high -strength waste. COD analyses from these grab samples were inconclusive. At 16:48 the Pretreatment Coordinator received an email from Liggett Group, indicating that the facility had discharged an estimated 400 gallons of propylene glycol on Thursday afternoon between the hours of 12:00 and 14:00. Based on the literature values for COD of propylene glycol and the discharge volume reported by Liggett, the Wastewater Director and Pretreatment Coordinator were fairly certain that this was the primary source of the high -strength waste received at the POTW. Therefore, the Wastewater Director and Pretreatment Coordinator met with representatives from Liggett Group the following Tuesday morning to discuss the incident at the WWTP, the circumstances surrounding the discharge of propylene glycol from Liggett, and the protocol for any future discharges from the facility. Although the facility has not previously been permitted, it was decided to move forward with the issuance of an Industrial User Permit. As well, enforcement action will be taken against the facility in accordance with the City's Enforcement Response Plan. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.cityofmebane.com PPV City of Mebane Wastewater Treatment Facility 106 E. Washington Street Mebane, NC 27302 February 27, 2013 W. Corey Basinger, Regional Supervisor North Carolina Department of Environment And Natural Resources Division of Water Quality Surface Water Protection Section 585 Waughtown Street Winston-Salem, NC 27107 RECEIVED N.C. Dept. of ENR MAR 0 5 2013 Winston-Salem Regional Office Subject: City of Mebane Wastewater Treatment Plant NPDES Permit No. NCO021474 Alamance County Dear Mr. Basinger: pf Mel N H� J',L 1 orth C a�0 Ch-t—d in ins] As has been reported through correspondence with your staff, the City of Mebane Wastewater Treatment Plant experienced extreme weather conditions during January 2013. These conditions caused the plant to exceed both the Weekly and Monthly Average NPDES permit limit for NH3-N. Mebane's responses to these exceedences was emailed to the Winston-Salem Regional Office (WSRO) and is summarized as follows: The facility exceeded its Weekly Average NPDES limit for NH3-N for the week of January 28, 2013 with an average of 14.25 mg/L and its Monthly Average NPDES limit for NH3-N for the month of January 2013 with an average of 6.90 mg/L. Per correspondence with both Jenny Graznak and Gary Hudson of the WSRO, the facility experienced heavy rainfall amounts of greater than 4 inches during the week of January 13'b . This resulted in higher than normal flows for the week and in peak flows of greater than 5.3MG for approximately six hours on ThursdaZ, January 17' . Also on Thursday the total plant flow was 3.631 MGD. On Friday, January 18 the total plant flow was 2.379 MGD. This rainfall event coincided with a 30n drop in ambient temperature which resulted in a decline in the aeration basin water temperature from 17"C on Monday, January 14`h to approximately 10"C by Sunday, January 2e resulting in partial loss of nitrification at the plant. On Sunday, January 2&, plant personnel conducting process control analyses for NH3-N using a Hach Ammonia Testing Kit noted that effluent ammonia levels were increasing at the facility. Process control analyses, confirmed later by commercial laboratory analyses, showed that these levels continued to increase to a maximum of 16.10 mg/L on Monday, January 28 b. During this time period, dissolved oxygen, pH and SRT levels in the basin were maintained at 2.0 mg/L, 7.0 SU, and 20 days respectively. On Wednesday and Thursday, January 23`d and 20, the plant was reseeded with approximately 9,000 gallons of activated sludge from the City of Graham and the City of Burlington wastewater plants. Also, 10 pounds of specially formulated nitrifiers from Novozymes were added to the aeration basin. PPV On Thursday, January 24t° and Monday, January 28 h, a nitrification inhibition test and a reactor study were conducted by plant personnel. Based on data collected during these studies, it was determined that the most probable inhibition to restarting nitrification at the facility was the low water temperature. This conclusion is supported by standard activated sludge literature as well Dr. Frances del los Reyes III, environmental professor at NC State, and Tom Johnston, wastewater specialist from CH2MHILL. Tuesday and Wednesday, January 29`h and 30'h saw an increase in ambient temperature to 70"F resulting in an increase in aeration basin water temperature. Plant personnel began supplementing the influent alkalinity with the addition of a hydrated lime slurry on Wednesday, January 3&. The combination of these favorable conditions resulted in a response by the nitrifiers and the week of January 28t` saw a decline in effluent ammonia levels. Ultimately full nitrification resumed in the aeration system and the Effluent NH3-N on February 761 was 2.60mg/L and has continued to decline. As of February 19'h the Monthly Average Effluent NH3-N was 3.43 mg/L. The City of Mebane appreciates the understanding and assistance of your staff during this period. A copy of this letter as well as the related emails is included with the January 2013 DMR submittal to Raleigh. Also, I have included a copy of page of the Effluent DMR for January. If you have any questions or need additional information please contact me. Sincerely, Dennis JFodge Wastewater Director City of Mebane 919-304-9215 dhod eg (cr�,cityofinebane.com cc: David Cheek, Mebane City Manager EFFLUENT VFV NPDES PERMIT NO. NC 0021474 DISCHARGE NO: 1 MONTH January YEAR 2013 FACILITY NAME MEBANE WASTEWATER TREATMENT FACILITY CLASS 4 COUNTY ALAMANCE OPERATOR IN RESPONSIBLE CHARGE (ORC) Dennis Hodge GRADE 4 PHONE 919-563-6141 CERTIFIED LABORATORIES (1) MEBANE (2) MERITECH INC. (3) R&ALABORATORY, Inc. CHECK BOX IF ORC HAS CHANGED () PERSONS COLLECTING SAMPLES OPERATORS 4,1� ?-- 20 -?-Q 13 (SIGNATURE OF tPEATOR IN RESPONSIBLE CHARGE) DATE BY THIS SIGNATUR I CERTIFY THAT THIS REPORT IS ACCURATE AND COMPLETE TO THE BEST OF MY KNOWLEDGE 50050 00010 00400 50060 00310 00610 00530 31616 00300 00600 00665 01034 01042 71900 D A T E Oper Arrival Time Oper Time On Site ORC On Site FLOW Temp Celsius Daily pH Daily Resd CL Daily BOD5 20 C Daily NH3 Daily TSS Daily FECAL COLI (geo mean) D.O. Daily Total Nitrogen 1/wk Total P 1/wk Total Cr NA Total Cu 2/mth Hg Eff _ Inf X_ Daily Rate Hrs Hrs Y/N MGD C SU UG/L MG/L MG/L MG/L #/100ML MG/L MG/L MG/L UG/L UG/L UG/L 1 1.109 2 700 10.0 Y 1.222 13 .9 <15 8.0 4.76 6.9 4 9.4 0.29 3 555 11.5 Y 1.315 13 7.0 <15 4.8 2.82 5.6 <2.0 9.7 10.04 0.25 <2.0 4 555 11.5 Y 1.127 11 7.0 <15 4.2 1.32 3.5 5 9.9 0.19 0.00293 5 1.138 6 1.012 7 700 10.0 Y 1.091 11 7.1 <15 3.8 2.36 6.1 <2.0 10.1 0.29 8 600 11.0 Y 1.071 11 7.1 <15 4.6 1.34 4.6 4 10.1 0.26 9 600 11.0 Y 1.041 12 7.1 <15 3.5 0.43 5.1 2.0 10.0 3.67 0.22 0.00310 10 555 11.5 Y 1.086 13 7.1 <15 6.1 3.08 5.6 <2.0 9.9 0.76 11 625 10.8 B 1.109 13 7.1 43 6.1 4.41 5.7 4 9.7 0.38 121 1.077 13 1.072 14 700 10.0 Y 1.109 16 7.1 <15 5.6 6.85 8.1 <2.0 9.1 0.56 15 555 11.5 Y 1.590 15 6.9 <15 8.8 2.75 10.5 4 9.0 0.38 16 555 11.5 Y 1.356 13 6.9 <15 3.7 3.81 6.0 27 9.2 10.51 0.24 < 5.0 <2.0 0.00469 17 555 11.5 Y 1.846 14 6.8 38 5.3 0.72 8.6 59 8.0 0.28 18 700 10.0 Y 3.631 12 6.5 <15 23.1 5.69 26.0 12 9.0 0.77 19 2.379 1201 1.636 21 1.290 t 22 700 10.0 Y 1.387 Ill 17.0 <15 5.2 8.20 8.2 8 10.2 0.32 23 555 11.5 Y 1.164 91 7.1 <15 2.9 11.10 7.2 63 10.6 18.46 0.26 24 550 11.5 Y 1.132 9.00 7.3 <15 4.9 14.10 6.1 58 10.8 0.23 25 600 10.3 Y 1.094 8 7.2 <15 3.4 14.20 6.1 9 10.8 0.28 0.00257 26 1.056 27 1.128 28 700 10.0 Y 1.107 9 7.2 <15 4.4 16.10 8.2 42 10.4 0.28 29 545 11.6 Y 1.183 12 7.1 <15 2.7 14.90 5.2 4 10.1 0.24 0.00100 30 540 11.6 Y 1.149 15 7.0 <15 3.5 13.40 6.2 4 8.9 22.76 0.24 <2.0 31 545 11.6 Y 1.284 15 7.1 <15 6.6 12.60 6.6 7 8.8 0.20 AVERAGE 1.322 12 7.3 4 5.8 6.902 7.42 7 9.7 13.09 0.33 < 5.0 <2.0 0.00286 MAXIMUM 3.631 16 43 23.1 16.10 26.00 63 10.8 22.76 0.77 < 5.0 <2.0 0.00469 MINIMUM 1.012 8 6.5 <15 2.7 0.43 3.5 <2.0 8.0 3.67 0.19 < 5.0 <2.0 0.00100 TOTAL FLOW 40.991 Grab Grab Grab Comp Comp Comp Grab Grab Comp Comp Comp Comp Grab Monthly Limit Apr - Oc 2.5 6-9 17 5 2 30 200 > 6.0 0.012 Monthly Limit Nov- Marl 10 r 4 UtM 1-orm MK-1 tV/UU) Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Thursday, February 21, 2013 8:38 AM To: Graznak, Jenny Cc: Basinger, Corey; Hudson, Gary Subject: Mebane WWTP Good Morning Jenny, Hope you're doing well. Just wanted to let you know that Mebane is back in compliance with our ammonia. At this point in February our ammonia average is below 4.0 mg/L. For January the final results are: Ammonia Monthly Average — 6.90 mg/L Ammonia Weekly Average - 11.90 mg/L for the 3rd week Ammonia Weekly Average - 14.25 mg/L for the 4th week Maximum Daily Ammonia - 16.25 mg/L One day, Jan. 28th All other parameters were in compliance. Thanks for your assistance through all of this. I will include all of Mebane's correspondence concerning the exceedences along with the January 2013 DMR submittal. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.cityof mebane.com PV RECEIVED As-•, N.C. Dept. of ENR �6- JAN 2 4 2013 NCDENR North Carolina Department of Environment and Natural Resources �NPgsonnal Off ice Division of Water Quality Pat McCrory Charles Wakild, P.E. John E. Skvarla, III Governor Director Secretary January 23, 2013 Frank Clifton, County Manager Orange County 200 South Cameron Street Hillsborough, NC 27278 Subject: Permit No. WQ0036077 Modification Buckhorn Mebane EDD Sewer Improvements Wastewater Collection System Extension Orange County Dear Mr. Clifton: In accordance with your permit application received January 10, 2013, we are forwarding herewith Permit No. WQ0036077 dated January 23, 2013, to Orange County for the construction and operation of the subject wastewater collection system extension. This permit shall be effective from the date of issuance until rescinded, shall void permit number WQ0036077 issued August 21, 2012, and shall be subject to the conditions and limitations as specified therein. This cover letter shall be considered a part of this permit and is, therefore, incorporated therein by reference. This modification grants a variance as described in permit condition 12. Please pay particular attention to: a) Permit Condition 3 that requires the wastewater collection facilities be properly operated and maintained in accordance with 15A NCAC 02T .0403 or any individual system -wide collection system permit issued to the Permittee, and b) Permit Condition 6 that requires Engineering Certification prior to operation of this collection system extension. c) Permit condition 12 which describes the granting of a variance to the Minimum Design Criteria. Permitting of this project does not constitute an acceptance of any part of the project that does not meet 15A NCAC 02T, the Division of Water Quality's (Division) Gravity Sewer Minimum Design Criteria adopted February 12, 1996 as applicable; and the Division's Minimum Design Criteria for the Fast - Track Permitting of Pump Stations and Force Mains adopted June 1, 2000, as applicable, unless specifically mentioned herein. Division approval is based on acceptance of the certification provided by a North Carolina -licensed Professional Engineer in the application. It shall be the Permittee's responsibility to ensure that the as -constructed project meets the appropriate design criteria and rules. Failure to comply may result in penalties in accordance with North Carolina General Statute §143- 215.6A through §143-215.6C, construction of additional or replacement wastewater collection facilities, and/or referral of the North Carolina -licensed Professional Engineer to the licensing board. In accordance with the provisions of Article amended, and other applicable Laws, Rules County for the construction and operation of: 21 of Chapter 143, General Statutes of North Carolina, as , and Regulations, permission is hereby granted to Orange One No thCarolina 11VW 11r1711Y North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone (919) 791-4200 Customer Service Internet: www.ncwaterqualdy.org 1628 Mail Service Center Raleigh, NC 27699-1628 FAX (919) 788-7159 877-623-6748 An Equal Opportunity/Affirmative Action Employer - - Recycled paper, contains 30% post consumer fiber Orange County Page 2 January 23, 2013 • Approximately 9,017 linear feet of 18-inch gravity sewer, and • Approximately 6,210 linear feet of 12-inch gravity sewer, and • Approximately 685 linear feet of 8-inch gravity sewer, and • A 500 GPM @ 139' TDH pump station with a minimum of duplex pumps, on -site audible and visual high water alarms, and an on -site generator with automatic transfer switch, and • Approximately 12,928 linear feet of 10-inch force main To serve future development as part of the Buckhorn Mebane Economic Development District project, and the discharge of no additional gallons per day (flows will be allocated in future permits for connections to this line) of collected domestic and/or commercial wastewater into the City of Mebane's existing sewerage system, pursuant to the modification application received January 10, 2013, and in conformity with 15A NCAC 02T; the Division's Gravity Sewer Minimum Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as applicable; and other supporting data subsequently filed and approved by the Department of Environment and Natural Resources and considered a part of this permit. The sewage and wastewater collected by this system shall be treated in the City of Mebane Wastewater Treatment Facility, Permit number NC0021474, before being discharged to the receiving stream. This permit shall become voidable unless the agreement between the City of Mebane and the County of Orange for the collection and final treatment of wastewater is in full force and effect. Any wastewater flow made tributary to this wastewater collection system extension prior to completion of the Engineer's Certification shall be considered a violation of the permit and shall subject the Permittee to appropriate enforcement actions. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within 30 days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of North Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. Unless such demands are made, this permit shall be final and binding. If you have any questions or require any additional information regarding this permit, please contact Barry Herzberg, Division of Water Quality, Raleigh Regional Office, at (919) 791-4200, or by e-mail to barry.herzberg@ncdenr.gov. Sincerely, for Charles Wakild, P.E., Di Division of Water Quality by S. Daniel Smith Surface Water Quality Supervisor, Raleigh Regional Office cc: Orange County Health Department Mark Lacy, PE; Hobbs Upchurch & Assoc., PO Box 1737. Southern Pines, NC 28388 Robert Wilson, Mebane City Manager, 106 E. Washington Street, Mebane, NC 27302 RRO SWP Corey Basinger, WSRO Central Files PERCS (electronic copy) `�F w�rF9 PV ALT4 OO' NCDENR NORTH CAROLINA p ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES RALEIGH WASTEWATER COLLECTION SYSTEM EXTENSION PERMIT This permit shall be effective from the date of issuance until rescinded and shall be subject to the following specified conditions and limitations: 1. This permit shall become voidable unless the wastewater collection facilities are constructed in accordance with the conditions of this permit; 15A NCAC 02T; the Division of Water Quality's (Division) Gravity Sewer Minimum Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as applicable; and other supporting materials unless specifically mentioned herein. 2. This permit shall be effective only with respect to the nature and volume of wastes described in the application and other supporting data. 3. The wastewater collection facilities shall be properly maintained and operated at all times. The Permittee shall maintain compliance with an individual system -wide collection system permit for the operation and maintenance of these facilities as required by 15A NCAC 02T .0403. If an individual permit is not required, the following performance criteria shall be met as provided in 15A NCAC 02T .0403: a. The sewer system shall be effectively maintained and operated at all times to prevent discharge to land or surface waters, and any contravention of the groundwater standards in 15A NCAC 02L .0200 or the surface water standards in 15A NCAC 02B .0200. b. A map of the sewer system shall be developed and shall be actively maintained. c. An operation and maintenance plan shall be developed and implemented. d. Pump stations that are not connected to a telemetry system shall be inspected every day (i.e. 365 days per year). Pump stations that are connected to a telemetry system shall be inspected at least once per week. e. High -priority sewer lines shall be inspected at least once per every six-month period of time. f. A general observation of the entire sewer system shall be conducted at least once per year. g. Inspection and maintenance records shall be maintained for a period of at least three years. h. Overflows and bypasses shall be reported to the appropriate Division regional office in accordance with 15A NCAC 02B .0506(a), and public notice shall be provided as required by North Carolina General Statute § 143-215.1 C. 4. This permit shall not be transferable. In the event there is a desire for the wastewater collection facilities to change ownership, or there is a name change of the Permittee, a formal permit request shall be submitted to the Division accompanied by documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request shall be considered on its merits and may or may not be approved. 5. Construction of the gravity sewers, pump stations, and force mains shall be scheduled so as not to interrupt service by the existing utilities nor result in an overflow or bypass discharge of wastewater to the surface waters of the State. 6. Per 15A NCAC 02T .0116, upon completion of construction and prior to operation of these permitted facilities, the completed Engineering Certification form attached to this permit shall be submitted with the required supporting documents to the address provided on the form. A complete certification is one where the form is fully executed and the supporting documents are provided as applicable. Gravity sewers installed below the minimum required slope per the Division's Gravity Sewer Minimum Design Criteria shall not be acceptable and shall not be certified until corrected. If there is an unforeseen obstacle in the field where all viable solutions have been examined, a slope variance can be requested from the Division with firm supporting documentation. This shall be done through a permit modification with fee. Such variance requests will be evaluated on a case -by -case basis. Resolution of such request shall be evident prior to completing and submitting the construction certification. 7. A copy of the construction record drawings shall be maintained on file by the Permittee for the life of the wastewater collection facilities. 8. Failure to abide by the conditions and limitations contained in this permit; 15A NCAC 02T; the Division's Gravity Sewer Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -Track Permitting of Pump Station and Force Mains adopted June 1, 2000 as applicable; and other supporting materials may subject the Permittee to an enforcement action by the Division, in accordance with North Carolina General Statutes §143- 215.6A through §143-215.6C. 9. In the event that the wastewater collection facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement facilities. 10. The issuance of this permit shall not exempt the Permittee from complying with any and all statutes, rules, regulations, or ordinances that may be imposed by other government agencies (local, state and federal) which have jurisdiction, including but not limited to applicable river buffer rules in 15A NCAC 02B .0200, erosion and sedimentation control requirements in 15A NCAC Ch. 4 and under the Division's General Permit NCG010000, and any requirements pertaining to wetlands under 15A NCAC 02B .0200 and 15A NCAC 02H .0500. 11. Noncompliance Notification: The Permittee shall verbally report to a water quality staff member at the Raleigh Regional Office, telephone number 919-791-4200, as soon as possible, but in no case more than 24 hours or on the next working day, following the occurrence or first knowledge of the occurrence of either of the following: a. Any process unit failure, due to known or unknown reasons, that renders the facility incapable of adequate wastewater transport, such as mechanical or electrical failures of pumps, line blockage or breakage, etc.; or b. Any failure of a pumping station or sewer line resulting in a by-pass directly to receiving waters without treatment of all or any portion of the influent to such station or facility. Initial voice mail messages or faxed information shall not be considered as the initial verbal report. Overflows and spills occurring outside normal business hours may also be reported to the Division of Emergency Management at telephone number (800) 858-0368 or (919) 733-3300. Persons reporting any of the above occurrences shall file a spill report by completing Part I of Form CS- V'SSO (or the most current Division approved form), within five days following first knowledge of the occurrence. This report shall outline the actions taken or proposed to ensure that the problem does not recur. The Director. Division of Water Quality, may take enforcement action for SSO's that are required to be reported to the Division unless it is demonstrated that: 1. The discharge was caused by severe natural conditions and there were no feasible alternatives to the discharge; or 2. The discharge was exceptional, unintentional, temporary, and caused by factors beyond the reasonable control of the Permittee and/or owner, and the discharge could not have been prevented by the exercise of reasonable control. 12. A variance has been granted to allow sewers to be installed in wetlands and wetland setbacks in accordance with the Draft Alternate Design Criteria for Minimum Separation for Sewer Systems to Wetlands, [15A NCAC 2T .0305(f)]. These areas will be considered high priority lines. High - priority lines must be inspected by the Permittee at least once every six months. Documentation of such inspections shall be maintained for a minimum of three years. Permit issued this the 23rd Day of January 2013.. Permit Number WQ0036077 Orange County Buckhorn Mebane EDD Sewer Improvements NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION �12le, �f for Charles Wakild, P.E., Director Division of Water Quality by authority of The Environmental Management Commission by S. Daniel Smith Surface Water Quality Supervisor Raleigh Regional Office FAST TRACK ENGINEERING CERTIFICATION Permit Number W00036077 Modification Orange County Buckhorn Mebane EDD Sewer Improvements January 23, 2013 Complete and submit this form (NO SUBSTITUTES) to the Raleigh Regional Office together with the following: • One copy of the project record drawings (plan & profile views of sewer lines) of the wastewater collection system extension. • Supporting design calculations (selected pumps, system curve, operating point, available storage if portable generator(s) or storage greater than longest past three year outage reliability option selected) for any pump stations permitted as part of this project. Changes to the project should be clearly identified on the record drawings or in written summary form. Permit modifications are required for any changes resulting in non-compliance with this permit, regulations or minimum design criteria. This proiect shall not be considered complete nor allowed to operate until the Division has received this Engineer's Certification and all required supporting documentation. It is highly recommended that this certification be sent in a manner that provides proof of receipt by the Division. The Division does not acknowledge receipt of Fast Track Engineering Certifications! ENGINEERS CERTIFICATION ❑ Partial ❑ Final I, as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (❑ periodically, ❑ weekly, ❑ full time) the construction of the subject project for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance of this permit; 15A NCAC 02T; the Division of Water Quality's (Division) Gravity Sewer Minimum Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as applicable; and other supporting materials. North Carolina Professional Engineer's Seal, signature, and date: .......................................................................................................... SEND THIS FORM & SUPPORTING DOCUMENTATION WITH REQUIRED ATTACHMENTS TO THE FOLLOWING ADDRESS RALEIGH REGIONAL OFFICE 1628 MAIL SERVICE CENTER RALEIGH NC 27699-1628 :........................................................................................................: The Permittee is responsible for tracking all partial certifications up until a final certification is received. Any wastewater flow made tributary to the wastewater collection system extension prior to completion of this Engineer's Certification shall be considered a violation of the permit and shall subject the Permittee to appropriate enforcement actions. DWQ use only: Flow from this project is tributary to: Mebane Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Thursday, February 07, 2013 10:44 AM To: Graznak, Jenny Cc: Basinger, Corey; Hudson, Gary Subject: Mebane Correction Hey Jenny, I need to make a correction to my email from yesterday. The ammonia in the effluent has decreased to 3-4 mg/L based on the composite samples. I was looking at the grab sample data for the effluent of the aeration basin, which has been as low as 05 mg/L. But even the 3-4 mg/L is so much better than where we were. Sorry for any confusion. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.cityofinebane.com Pf,raznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Wednesday, February 06, 2013 12:38 PM To: Graznak, Jenny Cc: Basinger, Corey; Hudson, Gary Subject: Mebane WWTP Good Morning Jenny, Hope you're doing well. Finally, our plant appears to be recovering from the ammonia issues. Last Thursday, January 30, we started adding a hydrated lime slurry to the influent. This is something that is not typically needed at our plant but we figured it wouldn't hurt to try to gain more alkalinity and a slightly higher pH. It appears that with higher temperatures for two days last week (70° on 1/29 & 1/30) the addition of the lime, and the slightly increasing outside temperatures during the past week, the nitrifiers started responding. Since last week our ammonia levels in the effluent have decreased from around 14.0 mg/L to around 2.0 mg/L today. We will continue to make adjustments as needed and I'll keep you informed as to our results. Thanks again for your assistance. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.cityofinebane.com Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Wednesday, January 30, 2013 11:02 AM To: Graznak, Jenny Cc: Basinger, Corey Subject: Mebane -December 2012 DMR Good Morning Jenny, I just wanted to follow up on our telephone conversation from yesterday(December 29, 2012). As I informed you then, during my routine check of the December 2012 DMR I realized that we missed recording the results from the analysis for effluent dissolved oxygen and temperature for December 13, 2012 due to an operator oversight. As our track record shows this rarely happens at Mebane. We have, as of January 29, 2013, implemented a check system that should prevent this occurrence in the future. We, the ORC and/or the backup ORC's, are meeting before lunch each day to insure that all daily permit limitation criteria has been completed. Along with this we have created a check -off form to further verify that all analysis has been completed and recorded. Also, during December we had an unusually high effluent BOD(19.4 mg/L) result on December 20. When looking back at data it appears that we may have had a pass through that was undetected. The influent BOD for that period was 441 mg/L. During the day of the occurrence we didn't notice anything unusual in the operation or process control at the plant. Although the results did not cause us to exceed the weekly or monthly BOD averages we have implemented a trunk line sampling program to try to determine where any stronger than normal wastes may be originating. We are also analyzing COD on our influent and trunk lines daily. Thank you again for assistance and if you need further details please feel free to contact me. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.ci!yofinebane.com Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Monday, January 28, 2013 8:41 PM To: Graznak, Jenny Cc: Basinger, Corey Subject: Mebane Update Hey Jenny, I just wanted to give you another update on the ammonia status at Mebane. We still have just partial nitrification. With the expected increase in temperature this week causing the subsequent warming of our plant's aeration basin maybe we will increase the rate of nitrification. I performed another reactor study today to compare the actual temperature effects on the basin and the potential to increase our nitrification. One reactor(RI) was maintained at a temperature of 8.5-10.2°C to reflect our aeration basin, while the other reactor(R2) was allowed to warm with the ambient temperature of the lab, which eventually reached a temperature of 20°C. The starting ammonia for both reactors was 12.0 mg/L. After 9 hours R1 decreased to 11.0 mg/L, virtually no nitrification, while R2 decreased to 2.5 mg/L. Like the reactor shows, I am of the opinion that that until our temperature warms we may continue to struggle with nitrification. From most of the experts, operators, and literature that I've consulted with this seems to be the case. If you have a technical assistance individual or group that can offer additional assistance please advise. Thanks again for working with us. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.cityofinebane.com Gramak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Tuesday, January 29, 2013 12:48 PM To: Hudson, Gary Cc: Smith, George; Graznak, Jenny; Basinger, Corey Subject: Mebane WWTP Good Afternoon Gary, I'm not sure whether or not Jenny Graznak has mentioned anything to you about Mebane and our nitrification problem. Mebane's wastewater treatment plant is only at about fifty percent of our nitrification removal. During the week of January 131h Mebane received 4" of rain and the associated runoff. Over 2" of rain occurred during Thursday along with snow and ice at the end of the rain. This event caused us to have peak flows of greater than 5.3MG for at least six hours on Thursday. The water temperature in the aeration basin decreased from a high of 17"C on Monday to around 10°C by Sunday. Between the rain and the temperature drop and all of the other measures that we took to keep sludge in the plant our nitrification rate started decreasing on Sunday and continued to where we are now. We have reseeded with sludge from Burlington and Graham plants and introduced nitrifiers from Novozymes but no enhancement of treatment yet. We've had Dr. Reyes from NC State as well as a wastewater specialist from CH2MHILL look at the plant. The general consensus is, as well as the literature, that until our water temperature warms up considerably we will continue to struggle. If you or your associates have any recommendations please offer them. If you need to visit or you need additional information please let me know. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.cityofinebane.com Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Wednesday, January 23, 2013 9:43 PM To: Graznak, Jenny Cc: Basinger, Corey Subject: City of Mebane Wastewater Treatment Plant Hey Jenny, I trust you're doing well. I'm ready for some warm weather! And so is my plant. Per our telephone conversations of today (Wednesday) and last week, the rain and the cold have cause increased operation difficulties. Last week Mebane received 4 inches of rain Tuesday, Wednesday, and Thursday with the bulk of it, 2 inches, coming on Thursday between 10:OOAM and 9:OO13M. Along with this the ambient temperature dropped thirty degrees from Tuesday to Thursday night. On Thursday our peak flows were in excess of 5.32MGD for over seven hours. Through adjusting valves, aeration rates, and utilizing all available tankage we were able to keep the level of the sludge blankets from going over the weirs thereby keeping the microorganisms in the system. The total suspended solids (TSS) analyzed from our effluent composite sample for that period was 26.0 mg/L. We are waiting for the results for the BOD and ammonia analysis from our commercial lab. By Saturday it seemed as if everything was getting back to normal, or at least normal for winter for us. However, on Sunday our ammonia, which had been below 2.0 mg/L since Friday, according to our Hach Ammonia Testing Kit, started rising. Again, using data from our Hach kit the ammonia continued to rise from 5.0 mg/L on Sunday afternoon to a high presently of 12.0 mg/L. We have maintained our Dissolved Oxygen above 2.0 mg/L, pH above 7.0 SU, and SRT at 20 days. We received some activated sludge from a local municipality today and will be receiving more on Thursday. We have also ordered nitrifiers from Novozymes that should be here also on Thursday. It will take some time to repopulate the nitrifiers to the level to properly remove the ammonia to within permit limits as our basin water temperature is at 9°C. If you or your staff have any additional suggestions please feel free to offer them. In addition, if you have a technical specialist on staff they are welcome to offer assistance. Tomorrow Dr. Reyes from NC State will be here as well as a wastewater professional engineer from CH2MHILL. Our staff is working diligently to overcome this issue. We know that nitrifiers do not thrive in cold temperatures but we think that we are doing all that we can and enlisting the aid of all to solve this problem. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.cityofinebane.com Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Thursday, January 24, 2013 9:59 PM To: Graznak, Jenny Cc: Basinger, Corey Subject: Mebane WWTP Hey Jenny, I wanted to give you an update of Mebane's wastewater status. After looking at all of the samples from last week it appears that we are compliant with all weekly effluent average limitations as well as monthly averages thus far. For this week we still have only partial nitrification. The results from our HACH Ammonia test kit are still around 14.0 mg/L. We have had approximately 9,000 of activated sludge delivered from neighboring municipalities and have added 10 pounds of Novozymes' specially formulated nitrifiers. We also performed a nitrification inhibition test. Using two reactors, one reactor was filled with Mebane's aeration basin mixed liquor while the other had Mebane's mixed liquor along with the purchased nitrifiers. After two hours both reactors had reduced the beginning ammonia of 12.0-14.0 mg/L down to 8.0 mg/L. By the end of four hours the ammonia in the AB only reactor was 4.0 mg/L and the AB with nitrifiers added was at 2.0 mg/L. This inhibition study was performed in the laboratory where the temperature is much warmer. It appears that there is no inhibition, at least at this time, in our aeration basin other than temperature. Dr. Reyes, environmental professor at NC State as well as the Ton Johnston, wastewater specialist from CH2MHILL, observed as well, that until our water temperature warms up the nitrifiers will continue to struggle to reproduce as well as perform adequate nitrification for our system. Thank you for your understanding and if you can offer other suggestions we are certainly open to them. If you want to discuss this further don't hesitate to contact me through my cell or email. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile www.ci!yofmebane.com WDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Pat McCrory Charles Wakild, P.E. John E. Skvarla, III Governor Director Secretary January 17, 2013 Mr. David Cheek, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: NOTICE OF VIOLATION (NOV-2013-LV-0046) NPDES Permit No. NCO021474 City of Mebane WWTP Alamance County Dear Mr. Cheek: A review of the October 2012 Discharge Monitoring Report (DMR) revealed a violation of the following parameter: Parameter Date Reported Value Permit Limit Violation Type Biochemical Oct 22-26, 2012 7.76 mg/I 7.5 mg/I Weekly Average Oxygen Demand Exceeded Biochemical Oct 2012 5.4 mg/I 5 mg/I Monthly Average Oxygen Demand Exceeded Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that violations of your NPDES permit could subject you to enforcement action by this Division with the possible assessment of civil penalties. If you have any questions or require any additional information, please contact Jenny Graznak at (336) 771-4960 (ienny.graznak(Q_ncdenr.gov) or myself at (336) 771-4963 (corey.basingerancdenr.gov). Sincerely, W. Corey Basinger Regional Supervisor Surface Water Protection Section cc: Central Files — SWP WSRO — SWP North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service:1-877-623-6748 Internet: www.ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer Nne orthCarolina Naturallrf PPPPPPP, Cover Sheet from Staff Member to Regional Supervisor DNIR Review Record Facility: 4c he-P W wTy Permit/Pipe No.: N CC6 ,;� 14D y Month/Year a+ 2-012— Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit Weekly/Daily Violations Date Parameter Permit Limit/Tvpe DMR Value % Over Limit C� oil Monitoring, Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Violations Completed by: VI" ��Z �-�— Date: I is Reg,ional Water Quality Date: `/ Supervisor Signoff: o� -2,0t3_ LV- 00 (o Pat McCrory Governor AL J,A NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Charles Wakild, P. E. John E. Skvarla, III Director Secretary April 24, 2013 CERTIFIED MAIL NO. 7011 1570 0001 8546 2750 RETURN RECEIPT REQUESTED Mr. David Cheek, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: Notice of Violation and Recommendation for Enforcement NOV-2013-LV-0270 NPDES Permit No. NCO021474 City of Mebane WWTP Alamance County Dear Mr. Cheek: A review of the Discharge Monitoring Report (DMR) for January 2013 revealed violations of the following parameters: Parameter Date Permit Limit Reported Value Violation Type Ammonia January 28-31, 12 mg/I —+4mg/I Weekly Average Nitrogen 2013 �� 13_7� Exceeded F Ammonia January 2013 4.0 mg/I 6.9 mg/I Monthly Average Nitrogen Exceeded A Notice of Violation/Notice of Recommendation for Enforcement (NOWNRE) is being issued for the noted violation of North Carolina General Statute (G.S.) 143-215.1 and NPDES Permit No. NC00 Pursuant to G.S. 143-215.6A, a civil penalty of not more than twenty-five thousand dollars ($25,000.00) may be assessed against any person who violates or fails to act in accordance with the terms, conditions, or requirements of any permit issued pursuant to G.S. 143-215.1. If you wish to provide additional information regarding the noted violation, request technical assistance, or discuss overall compliance please respond in writing within ten (10) days after receipt of this Notice. A review of your response will be considered along with any information provided on the Discharge Monitoring Report. You will then be notified of any civil penalties that may be assessed regarding the violations. If no response is received in this Office within the 10-day period, a civil penalty assessment may be prepared. Remedial actions, if not already implemented, should be taken to correct any problems. The Division of Water Quality may pursue enforcement actions for this and any additional violations. If the violations are of a continuing nature, not related to operation and/or maintenance problems, and North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 One Phone: 336-771-50001 FAX: 336-77146301 Customer Service:1-877-623-6748 NorthCarohna Internet: www.ncwaterquality.org Aaturatlrf An Equal Opportunity 1 Affirmative Action Employer you anticipate remedial construction activities, then you may wish to consider applying for a Order by Consent. If you have questions concerning this matter, please do not hesitate to contact Jenny Graznak or me at (336) 771-5000. Sincerely, M N W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality cc: Point Source Branch SWP — Central Files WSRO Files Cover Sheet from Staff Member to Regional Supervisor DNIR Review Record Facility: dL Permit/Pipe No.: Month/Year P^araTTmeter M nthl Average Violations Permit Limit DMR Value Over Limit 7,-Q, 5 We kly aily Violations Date Parameter Permit LimidTvpe DMR Value % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Vi u Ntr)v : j� lvoj� -4�, ebb twej�- ,, t-_�,, ) -11 No -TPG d�A NOV J0G) wcr9-� N C U Completed by: Date: Regional Water Quality • Supervisor Sianoff: Date: �' 7�v 1-3 A EFFLUENT S PERMIT NO. NC 0021474 MAR 2 LjSgq,*`,ZGE NO: 1 MONTH January YEAR 2013 ACILITY NAME MEBANE WASTEWATER TREATMENT FACILITY CLASS 4 COUNTY A .AMANCE OPERATOR IN RESPONSIBLE CHARGE (ORC) Dennis Hodge GRADE 4 PHONE 919-563-6141 CERTIFIED LABORATORIES (1) MEBANE (2) MERITECH INC. (3) R&ALABORATOR�, ,-Y1q,.;1 CHECK BOX IF ORC HAS CHANGED PERSONS COLLECTING SAMPLES OPERATORS Pht. drama 231 k MAD Oi h3 v� 20i3 _ .,.. ,. (SIGNATURE OF PEATOR IN RESPONSIBLE CHARGE) DA BY THIS SIGNATUR I CERTIFY THAT THIS REPORT IS ACCURATE AND COMPLETE TO THE BEST OF MY KNOWLEDGE 50050 00010 00400 50060 00310 00610 00530 31616 00300 00600 00665 01034 101042 71900 D A T E Oper Arrival Time Oper Time On Site ORC On Site FLOW Temp Celsius Daily pH Daily Resd CL Daily BODS 20 C Daily NH3 Daily TSS Daily FECAL COLI (geo mean) D.O. Daily Total Nitrogen 1/wk Total P 1/wk Total Cr NA Total Cu 2/mth Hg Eff Inf X_ Daily Rate Hrs Hrs Y/N MGD C SU UG/L MG/L MG/L MG/L #/100ML MG/L MG/L MG/L UG/L UG/L UG/L 1lidew 1.109 2 700 10.0 1 Y 1.222 13 .9 <15 8.0 4.76 6.9 4 9.4 0.29 3 555 11.5 Y 1.315 13 7.0 <15 4.8 2.82 5.6 <2.0 9.7 10.04 0.25 <2.0 4 555 11.5 Y 1.127 11 7.0 <15 4.2 1.32 3.5 5 9.9 0.19 0.00293 5 1.138 6 1.012 7 700 10.0 Y 1.091 11 7.1 <15 3.8 2.36 6.1 <2.0 10.1 0.29 8 600 11.0 Y 1.071 11 7.1 <15 4.6 1.34 4.6 4 10.1 0.26 9 600 11.0 Y 1.041 12 7.1 <15 3.5 0.43 5.1 2.0 10.0 3.67 0.22 0.00310 10 555 11.5 Y 1.086 13 7.1 <15 6.1 3.08 5.6 <2.0 9.9 0.76 11 625 10.8 B 1.109 13 7.1 43 6.1 4.41 5.71 4 9.7 0.38 12 1.077 13 1.072 14 700 10.0 Y 1.109 16 7.1 <15 5.6 6.85 8.1 <2.0 9.1 0.56 15 555 11.5 Y 1.590 15 6.91 <15 8.8 2.75 10.5 4 9.0 0.38 16 555 11.5 Y 1.356 13 6.9 <15 3.7 3.81 6.0 27 9.2 10.51 0.24 < 5.0 <2.0 0.00469 17 555 11.5 Y 1.846 14 6.8 38 5.3 0.72 8.6 59 8.0 0.28 18 700 10.0 Y 3.631 12 6.5 <15 23.1 5.69 26.0 12 9.0 0.77 19 2.379 20 1.636 21 1.290 ^' 22 700 10.0 Y 1.387 Ill 17.0 <15 5.2 8.20 8.2 8 10.2 0.32 + 23 555 11.5 Y 1.164 9 7.1 <15 2.9 11.10 7.2 63 10.6 18.46 0.26 24 550 11.5 Y 1.132 9.00 7.3 <15 4.9 14.10 6.1 58 10.8 0.23 25 600 10.3 Y 1.094 8 7.2 <15 3.4 14.20 6.1 9 10.8 0.28 0.00257 26 1.056 27 1.128 28 700 10.0 Y 1.107 9 7.2 <15 4.4 16.10 8.2 42 10.4 0.28 29 545 11.6 Y 1.183 12 7.1 <15 2.7 14.90 5.2 4 10.1 0.24 0.00100 30 540 11.6 Y 1.149 15 7.0 <15 3.5 13.40 6.21 4 8.9 22.76 0.24 <2.0 31 545 11.6 Y 1.284 15 7.11 <15 6.6 12.60 6.6 7 8.8 0.20 AVERAGE 1.322 12M 4 5.8 6.902 7.42 7 9.7 13.09 0.33 < 5.0 <2.0 0.00286 MAXIMUM 3.631 16 7.3 43 23.1 16.10 26.00 63 10.8 22.76 0.77 < 5.0 <2.0 0.00469 MINIMUM 1.012 8 6.5 <15 2.7 0.43 3.5 <2.0 8.0 3.67 0.19 < 5.0 <2.0 0,00100 TOTAL FLOW 40.991 Grab Grab Grab Comp Comp Comp Grab Grab Comp Comp Comp Comp Grab Monthly Limit Apr - Oct 2.5 6-9 17 5 2 30 200 > 6.0 0.012 Monthly Limit Nov- Ma 10 4 vim rvnn rvm-I kvivv) Pat McCrory Governor ��) NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Thomas A. Reeder John E. Skvarla, III Acting Director Secretary July 3, 2013 Mr. David Cheek, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: Notice of Violation (NOV-2013-LV-0397) NPDES Permit No. NCO021474 City of Mebane Wastewater Treatment Plant Alamance County Dear Mr. Cheek: A review of the self -monitoring report for the month of April 2013 revealed the following violations of permit limits: Parameter Date Limit Value Reported Value Limit Type BOD April 1-5, 2013 7.5 mg/I 9.38 mg/I Weekly Average Exceeded Thank you for your attention to this matter. Remedial actions should be taken to correct the cause(s) of this violation. Unresolved violations may lead to the assessment of civil penalties. If you have any questions or require any additional information, please contact Jenny Graznak at (336) 771-5000 or at iennv.araznak�ncdenr.gov. Sincerely, W. Corey Basinger Regional Supervisor Surface Water Protection Section cc: SWP — Central Files WSRO Files North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-77146301 Customer Service: 1-877-623-6748 Internet: www.ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer NorthCarolina Natura!!Y Cover Sheet from Staff Member to Regional Supervisor DMR Review Record a Facility: � d-kP PermitlPipe No.:Month/Year .NC:�D�� Ari 020 uU V-" Monthly Average Violations Parameter Permit Limit DMR Value eekl wily Violations Date Parameter Permit Limiffype DMR Value 13OD Over Limit % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequencv Values Reported # of Violations Other Violations _ Joy v► ao 3 -- �yo 4,4 Dec_ N o7 Av 4,egi Completed by: J WVAV 6 Regional Water Quality Supervisor Signoff: ��� Date: -7 a01 700 Date: __ I *V1%.0 I ms ; .., JUNQ6 ®®�� ' t J!.! Q 6 ?.Q13 2Qt3 EFFLUENT NPDES PERMIT NO. NC 0021474 DISCHARGE NO: 1 MONTH April YEAR 2013 FACILITY NAME MEBANE WASTEWATER TREATMENT FACILITY CLASS 4 COUNTY ALAMANCE OPERATOR IN RESPONSIBLE CHARGE (ORC) Dennis Hodge GRADE 4 PHONE 9i5563.61-_ CERTIFIED LABORATORIES (1) MEBANE (2) MERITECH INC. (3) R&A?LABORa$ lii : CHECK BOX IF ORC HAS CHANGED () PERSONS COLLECTING SAMPLES OPERATORS Mail ORIGINAL and ONE COPY to: ATTN: Central Files NC DENR/DIV OF WATER QUALITY 4,1h `9 '°' dies" e WATER QUALITY SECTION (SI ATU OPEATOR IN RESPONSIBLE CHARGE) DATE 1617 MAIL SERVICE CENTER BY THIS SIGN TURE I CERTIFY THAT THIS REPORT IS ACCURATE RALEIGH, NC 27699 -1617 AND C MPLETE TO THE BEST OF MY KNOWLEDGE D A T E Oper Arrival Time I Oper Time On Site ORC On Site 50050 00010 00400 50060 00310 00610 00530 31616 00300 00600 00665 01034 01042 71900 FLOW Temp Celsius Daily pH I Daily Resd CL Daily BOD5 20 C Daily NH3 Daily TSS Daily FECAL COLI (geo mean) D.O. Daily Total Nitrogen 1/wk Total P 1/wk Total Cr NA Total Cu 2/mth Hg Eff _ Inf X_ Daily Rate Hrs Hrs Y/N MGD C SU UG/L MG/L MG/L MG/L #/100ML MG/L MG/L MG/L UG/L UG/L UG/L 1 700 10.0 Y 1.349 14 7.2 <15 5.8 1.70 8.9 2 8.9 0.68 2 550 11.5 Y 1.284 14 7.1 28 5.9 1.60 6.8 <2.0 9.3 0.65 0.00282 3 555 11.5 Y 1.140 13 7.1 <15 3.1 1.40 4.8 <2.0 9.7 13.90 0.28 <2.0 4 630 10.7 B 1.110 12 7.2 <15 2.8 0.60 3.4 <2.0 9.5 0.24 5 6301 10.7 B 1.681 12 7.3 <15 29.3 1.20 4.4 3 9.4 0.32 6 1.439 9 7 1.176 8 700 10.0 Y 1.093 14 7.3 <15 4.4 0.70 4.4 <2.0 8.8 0.20 9 555 11.5 Y 1.199 16 7.5 <15 2.6 0.40 4.4 6 8.9 0.23 101 555 11.51 Y 1.185 17 7.4 <151 2.9 0.50 5.3 <2.0 8.4 10.58 0.32 0.00187 11 600 11.0 Y 1.169 18 7.3 <15 3.5 0.80 4.5 <2.0 8.2 0.43 12 630 10.7 B 1.238 19 7.2 <15 4.6 0.40 6.8 100 6.4 0.56 13 1.838 14 1.286 15 700 10.0 Y 1.236 16 7.2 <15 3.7 0.20 6.9 <2.0 8.4 0.49 161 555 11.5 Y 1.233 17 7.3 <15 3.3 0.10 4.8 1 8.5 0.60 17 555 11.5 Y 1.226 18 7.4 <15 2.7 0.11 5.7 9 8.2 4.85 0.51 < 5.0 <2.0 18 600 11.0 Y 1.214 18 7.3 <15 2.8 < .1 4.4 188 8.2 0.81 0.00218 19 630 10.7 B 1.151 19 7.4 <15 3.9 < .1 6.7 <2.0 8.0 1.00 20 1.373 21 1.182 221 700 10.0 Y 1.227 14 7.3 <15 2.4 < .1 4.6 <2.0 8.8 0.85 23 550 11.5 Y 1.190 15 7.4 <15 < 2.0 < .1 3.5 18 8.7 0.23 0.00285 24 550 11.5 Y 11.132 15.50 7.4 <15 2.5 < .1 4.6 30 8.6 6.45 0.84 25 550 11.5 Y 1.092 17 7.4 <15 2.2 < .1 4.7 <2.0 8.6 0.93 26 630 10.71 B 1.0601 16 7.4 <15 2.1 < .1 4.31 4 8.71 0.80 27 1.055 28 1.053 29 700 10.0 Y 1.601 16 7.3 <15 4.4 0.30 5.6 570 7.5 0.94 30 550 11.5 Y 1.355 17 7.3 <15 3.1 0.10 3.9 2 8.5 0.40 31 AVERAGE 1.252 16 1 4.5 0.460 5.15 6 8.5 8.95 0.56 < 5.0 <2.0 0.00243 MAXIMUM 1.838 19 7.5 28 29.3 1.70 8.92 570 9.7 13.90 1.00 < 5.0 <2.0 0.00285 MINIMUM 1.053 12 7.1 <15 <2.0 < .1 3.4 <2.0 6.4 4.85 0.20 < 5.0 <2.0 0.00187 TOTAL FLOW 37.567 Grab Grab Grab Comp Comp Comp Grab Grab Comp Comp Comp Comp Grab Monthly Limit Apr - Oc 2.5 6-9 17 1 5 2 30 200 > 6.0 0.012 Monthly Limit Nov- Mal I I 1 10 4 UCM corm MK-1 taiuu/ Pr 1� NC®EN North Carolina Department of Environment and Division of Water Quality Beverly Eaves Perdue Charles Wakild, P.E. Governor Director May 8, 2012 Mr. Robert Wilson, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: NOTICE OF VIOLATION (NOV-2012-LV-0243) NPDES Permit No. NCO021474 City of Mebane WWTP Alamance County Dear Mr. Wilson: Natural Resources Dee Freeman Secretary A review of the February 2012 Discharge Monitoring Report (DMR) revealed a violation of the following parameter: Parameter Date Reported Value Permit Limit Fecal coliform 2/6-10/2012 995.64 # / 100ml 400 # / 100ml Remedial actions should be taken to correct the cause(s) of this violation. The violations described above should be abated immediately and properly resolved. Thank you for your attention to this matter. This office requires that the violations as described above be properly resolved. Unresolved violations may lead to the issuance of a Notice of Violation and/or assessments of civil penalties. If you have any questions or require any additional information, please contact Jenny Graznak at (336) 771-4960 (]enny.graznak-ncdenr.gov) or myself at (336) 771-4963 (corey.basinger(Dncdenr.gov). Sincerely, W. Corey Basinger Regional Supervisor Surface Water Protection Section cc: Central Files — SWP WSRO — SWP North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-77146301 Customer Service: 1-877-623-6748 Internet: www.ncwaterquality.org NorthCarolina An Equal Opportunity 1 Affirmative Action Employer EFFLUENT RECENE N.C.Dept NPDES PERMIT NO. NC O021474 DISCHARGE NO: 1 MONTH February EAR 12Y 04 2012 FACILIT,' NAME MEBANE WASTEWATER TREATMENT FACILITY CLASS 4 COUNTY A ANCVinston-Salem OPERATOR IN RESPONSIBLE CHARGE (ORC) Dennis Hodge GRADE 4 PHONE 9 3 6�flgiortal Office CERTIFIED LABORATORIES (1) MEBANE (2) MERITECH INC. (3) R&A LABORATORY, Inc. CHECK BOX IF ORC HAS CHANGED O PERSONS COLLECTING SAMPLES OPERATORS __-M ail ORIGINAL and ONE COPYto: ATTN: Central Files NCDEI•iP/DIVOFWATERQUALITY WATER.ODUALITYSECTION a1 4r z, (SIGNATURE OF OF 1617 MAIL SERVICE CENTER BY THIS SIGNATURE I RALEIGH NC 27699 -1617 AND COMPLE1 03 ,, Urz IN htCSruNSltiLt UHARGE� - DATE =RTIFY THAT THIS REPORT IS ACCURATE TO THE BEST OF MY KNOWLEDGE 50050 00010 00400 50060 00310 00610 00530 31616 00300 00600 00665 01034 01 442 7 9900 FLOW D A Oper ',.-,,per Arrival -1 irne jORC iOn Eff _ Inf X Temp Celsius Resd BOD5 NH3 TSS FECAL D.O. Total Total Total Total T Time 'i.=rI Site Daily pH CL 20 C COLI Nitrogen P Cr Cu E :_;ile i Rate Daily Daily Daily Daily ! Daily Daily (geo mean) Daily 1 Jwk 1/wk NA 2/mth Hrs Hrs 700 10.0 YJN MGD ' C SU - UGJL MGJL MG/L - - MG/L - -- VNIAL MGJL MG/L MG/L UG/L UGJL _ - Yi 1.103 ----- 12 7.1 <15 6.7 0.13 7.0 9.9 9.80 <2.0 2 700 10.0; Y 1.081. 14 7.0 <15 6.8 0.12' 9.3 _245 222 - 9.9 3 700' 10.0 _ Y 1.066 13 -- 7.0 33 5.6 0.13 6.5 _ 1 9.7 4 1.005 - - 5 1.075 6 -- 700 10.0 Y 1.060 12 7.0 <15 8.3 0.59 16.7 52 9.8 - 7 _ 700 1Off Y 1.059 11 7.1 <15 9.3 0.24 11.9 4,500 10.2 3.85 8 7001- 10.0. ---Y 1.077 11 6.9 <15 8.1 0.13 9.9 2,600 9.9 9.41 2.90 9 700 10.0 Y 1.034 11 7.0 <15 6.2 0.11 8.2 1,167 9.9 2.50 10 _ 700' _ 1 O.Oi Y 1.026 11 6.9 <15 6.1 0.11 7.6 1,378 10.4 2.75 3.10 11 --- 1.006 12 1.000 13 700, 10.0; Y 0.976 9 7.0 <15 9.0 0.78 11.0 2 10.6 14 700, 10.0! Y 1.064 11 7.2 22 8.1 0.61 13.5 4 10.0 5.80 5 70T 10.01 Y _ 1.082 12 7.0 39 7.4 0.64 12.6 Z 10.0 2.52 3.70 2.95 6 700u 10.0 Y i-_ 1.029 13 7.1 46 6.3 0.79 7.1 2 9.5 7 0 1 7001 10.01 .. YI- - 700, - 10.01 - - Y� 700 10.0 Y1 -- -- -- j -- 1.165 -- 13 ----- --- --- -------- 2.15 7.1 - <15 5.4 0.83 - 7.3 - 2 - -- 9.0 -- - --- 1.55 1.038 _1.010 - 1.319 - 1.341 11 - 7.0 44 ---26 4.9 _3.14 6.9 3 10.3 0.89 11.20 7.0 5.4 2.85 - -9.1 _ 2 9.6 --- 0.52 2 700.00 10.0! 1.202 12 7.0<15 4.8 2.05 7.1 _ 2 9.2 4.01 0.42 3 7001 10.0; Y 1.142 14 7.1 <15 4.5 1.75 5.6 2 9.5 0.44 4 10.0 Y _1.137 15.70 7.2 <15 4.1 4.22 5.2 2 8.4 0.33 5 1.283 6 1.178 7 _ _ 700' 10.0: Y , 0.958 11 7.1 <15 4.6 1.59 5.4 2 9.8 8 7 0. 0:10.0 Y _ 1.188 13 7.0 <15 3.9 1.65 3.6 2 9.5 0.25 9 70ii 10.01 Y 1.125 13 7.0 <15 4.3 2.55 4.8 2 9.0 3.88 0.25 0.24 1 AVERAGE 1.098 12 10 6.2 1.191 8.39 14 9.7 5.92 MAXIMUt.1 -- _- - 1 341 16 _ 7.2 46 9.3 4.22 16.70 4,500 10.6 9.80 MINIMUM 0.958 9 6.9 <15 3.9 0.11 3.6 1 8.4 2.52 - --- -- TOTAL FLOW - - --- 31.829 Grab Grab Grab Comp Comp Comp Grab Grab I Comp Ivlonill LirndApr-Od 2.5 6 0 9 17 1 5 --- 2 30 20> 6 0 Y- - - - - -- Monthi ; h it Nov Mar:'10 4 r _ L- - - DEM F- - rn, r:4R-1 (9/00) - - <2.0 <2.0 Hg UG/L 0.00287 0.00378 0.00250 0.001 1.92 <2.0 0.00276 5.80 <2.0 0.00378 0.24 <2.0 0.00, 89 mp Comp Comp Grab I 0.012 Pr Cover Sheet from Staff Member to Regional Supervisor DMR Review Record Facility: HCWIwT- Per r t/Pipe No.:-,wRm-I 'Month/Year �- Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit Date Date eel)cl aily Violations Parameter Permit Limit/TvT)e DMR Value % Over Limit t PC on -� w 0� Monitoring Frequency Violations Parameter Permit Frequency Values Reported # of Violations Other Violations bk 'o l0t 1 . Completed by: Date: S ZL-) Regional Water Quality 8 Supervisor Signoff: Date: Z0�?i v ppppppr, A"Tr NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Pat McCrory Charles Wakild, P.E. John E. Skvarla, III Governor Director Secretary December 19, 2012 Mr. David Cheek, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: NOTICE OF DEFICIENCY — Effluent Limitations Case # NOD-2013-MV-0032 NPDES Permit No. NCO021474 — City of Mebane WWTP Alamance County Dear Mr. Cheek: A review of the December 2012 Discharge Monitoring Report (DMR) revealed the following deficiency: Parameter Date Required Reported Violation Type Fre ency Frequency Temperature Sept 13, 2012 5 x week 4 x week Frequency Violation Dissolved Oxygen Sept 13, 2012 5 x week 4 x week Frequency Violation The Operator verified that this deficiency was due to an oversight and that these results were not recorded. Remedial actions should be taken to correct the cause(s) of this violation. This office requires that the violations as described above be properly resolved. Unresolved violations may lead to the. issuance of a Notice of Violation and/or assessments of civil penalties. If you have any questions or require any additional information, please contact Jenny Graznak at (336) 771-4960 (ienny.graznak _ncdenr.gov) or myself at (336) 771-4963 (corey.basinger@ncdenr.gov). Thank you for your attention to this matter. Sincerely, W. Corey Basinger Regional Supervisor Surface Water Protection Section cc: Central Files — SWP WSRO — SWP North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service:1-877-623-6748 Internet: www.ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer NorthCarohna Naturally PPPPPPP, Cover Sheet from Staff Member to Regional Supervisor DNIR Review Record Facility: bebqj,04 (4 T Permit/Pipe No.: NCOMa1y4-y Month/Year DC _2d/2- Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit Weekly/Daily Violations Date Parameter Permit LimiVTvpe DMR Value % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequencv Values Reported # of Violations Q- t2 1D0 Dai l x L4 Completed by:y& \ �`� Date: -?,L(o 113- Regional Water Quality .y�� d" Supervisor SiQnoff: Date: � EFFLUENT A PCrnST N0P. NC O021474 DISCHARGE NO:1 MONTH December FEB R FACILITYNAME MEBANE WASTEWATER TREATMENT FACILITY CLASS 4 COUNTY ALAMANCE OPERATOR IN RESPONSIBLE CHARGE (ORC) Dennis Hodge GRADE 4 PHONE 919-56;6ti14,1 CERTIFIED LABORATORIES (1) MEBANE (2) MERITECH INC. (3) R&A LABO IInc. CHECK BOX IF ORC HAS CHANGED O PERSONS COLLECTING SAMPLES RQEPEM ORS N C De t of END Mail ORIGINAL and ONE COPY to: ATTN: Central Files NC DENR/DIV OF WATER QUALITY WATER QUALITY SECTION 1617 MAIL SERVICE CENTER RALEIGH, NC 27699 -1617 REUEIVE FEES ©4 2013 CENTRAL F) (SIGNATURE 0 OF �W(a�HIS SIGNATURE I AND COMPLEI p. MAR 0 4 2013 _ '-� � iR IN RI CHARGE) DATE -IFY THAT THIS REPORT IS ACCURATE THE BEST OF MY KNOWLEDGE 50050 00010 00400 50060 00310 00610 00530 31616 00300 00600 00665 01034 01042 71900 D A T E Oper Arrival Time Oper Time On Site ORC On Site FLOW Temp Celsius Daily pH Daily Resd CL Daily BOD5 20 C Daily NH3 Daily TSS Daily FECAL COLI (geo mean) D.O. Daily Total Nitrogen 1/wk Total P 1/wk Total Cr NA Total Cu 2/mth Hg Eff _ Inf X Daily Rate Hrs Hrs Y/N MGD C SU UG/L MG/L MG/L MG/L #/100ML MG/L MG/L MG/L UG/L UG/L UG/L 1 1.085 2 0.999 3 700 10.0 Y 0.972 15 7.1 <15 4.0 2.03 6.1 -4 2 8.9 0.30 4 555 11.5 Y 1.033 16 6.9 <15 < 2.0 4.00 5.2 4 8.9 0.28 5 555 11.5 Y 1.132 16 7.0 <15 4.4 1.64 5.2 12 8.5 4.51 0.22 <2.0 6 555 11.5 Y 1.024 15 7.0 <15 4.5 1.52 5.0 3 8.9 0.23 0.00218 7 630 10.7 B 1.015 14 7.0 <15 5.1 0.57 4.3 350 9.0 0.19 8 1.128 550 9 0.971 10 630 10.7 B 1.022 17 6.9 <15 5.1 0.57 6.4 55 7.5 0.35 11 700 10.0 Y 1.118 17 7.01 <15 5.7 3.97 12 8.3 0.38 12 550 11.5 Y 1.054 15 7.1 <15 6.9 1.27 _8.2 9.1 320 8.9 7.02 0.44 131 5501 11.5 Y 1.013 7.0 <15 7.2 0.55 10.1 444 0.43 0.00206 14 555 11.5 Y 1.067 12 7.0 <15 5.6 0.37 4.3 4,000 9.1 0.21 15 0.927 16 1.010 17 630 10.7 B 1.199 15 6.9 <15 5.5 0.91 7.4 1,264 7.7 0.40 18 700 10.0 Y 1.020 16 6.9 <15 8.3 0.20 5.6 39 8.2 0.27 19 550 11.5 Y 1.109 14 7,01 <15 3.6 0.38 3.6 17 8.3 3.18 0.21 <2.0 20 600 11.0 Y 1.043 13 7.11 <15 19.4 1.42 4.0 4 8.5 0.23 0.00267 21 600 11.0 Y 1.297 13.60 7.01 <15 5.2 0.96 6.2 5 8.5 0.28 22 1.074 23 1.037 24 p Ir dA 01 1.023 25 ® Am 1.000 , 26 0.887 <15 10.2 2.84 18.6 12 27 600 11. Y 1.992 12 6.8 9.1 0.59 28 555 11.5 Y 1.177 11 6.9 <15 4.5 0.28 5.4 2 9.6 8.28 0.25 0.00234 291 1.182 30 1.084 311 6301 10.7 B 0.998 10 7.0 <15 3.9 4.67 7.8 < 2 9.7 0.38 AVERAGE 1.087 14 0 6.1 1.564 6.79 31 8.7 5.75 0.31 <2.0 0.00231 MAXIMUM 1.992 17 7.1 <15 19.4 4.67 18.60 4,000 9.7 8.28 0.59 <2.0 0.00267 MINIMUM 0.887 10 6.8 <15 < 2.0. 0.20 3.6 2 7.5 3.18 0.19 <2.0 0.00206 TOTAL FLOW 33.692 Grab Grab Grab Comp Comp Comp Grab Grab Comp Camp Comp Comp Grab Monthly Limit Apr- Oct 2.5 6-9 17 5 2 30 200 > 6.0 0.012 Monthly Limit Nov Mar 10 4 UGM VUlltl IYIR-I pfuu) NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Charles Wakild, P.E. Dee Freeman Governor Director Secretary December 19, 2012 Mr. Robert Wilson, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: NOTICE OF DEFICIENCY — Effluent Limitations Case # NOD-2012-LV-0132 NPDES Permit No. NCO021474 — City of Mebane WWTP Alamance County Dear Mr. Wilson: A review of the September 2012 Discharge Monitoring Report (DMR) revealed a violation of the following parameter: Parameter Date Reported Value Permit Limit Violation Type Total Residual Chlorine (TRC Sept 7, 2012 17 ug/1 67 ug/I Daily Maximum Exceeded Remedial actions should be taken to correct the cause(s) of this violation. The violations described above should be abated immediately and properly resolved. Thank you for your attention to this matter. This office requires that the violations as described above be properly resolved. Unresolved violations may lead to the issuance of a Notice of Violation and/or assessments of civil penalties. If you have any questions or require any additional information, please contact Jenny Graznak at (336) 771-4960 (jenny.graznak0_)ncdenr.gov) or myself at (336) 771-4963 (corey.basingerd_ncdenr.gov). Sincerely, W. Corey Basinger Regional Supervisor Surface Water Protection Section cc: Central Files — SWP WSRO — SWP North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-77146301 Customer Service:1-877-623-6748 Internet: www.ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer None rthCarolina Naturally Cover Sheet from Staff Member to Regional Supervisor 1' �DNIR Review Record Facility: he-(q t" Wwl' Permit/Pipe No.: a� -1 Month/Year 2-012-- Monthly Average Violations Parameter Pemvt Limit DMR Value % Over Limit Date Parameter Date Weekly 1 iolations Permit Limit/Tvj2e DMR Value J�z.k It 6-7 Monitoring Frequency Violations % Over Limit Parameter Permit Frequencv Values Reported # of Violations Violations ,�n/-I _ w "/Zo 12 — NOV 50D S /20 12 vy\ Completed by:Date: Regional Water Quality Supervisor Signoff: Date: DI) 0�3 �'- Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Thursday, November 15, 2012 9:59 AM To: Graznak, Jenny Cc: Basinger, Corey Subject: FW: Mebane Wastewater Facility Good Morning Jenny, I hope everything is going well. It's hard to believe that the holiday season is upon us so quickly. I wanted to let you know that we have exceeded our permit limitation for effluent BOD during October 2012. I've attached this email to the one that I sent in May of this year explaining the operating strategy that we are using at the plant. It has been achieving the desired results, increased total nitrogen removal, but it is not without other consequences at times. For the week of October 22-26, 2012 Mebane exceeded our weekly effluent BOD limitation of 7.5 mg/L. Our average for the week was 7.76 mg/L. The higher results for this week also cause us to exceed our monthly BOD average of 5.0 mg/L. The monthly average for October 2012 is 5.44 mg/L. The following week the BOD numbers were below the permitted limits and thus far in November the BOD has been below the permitted limits. In looking at some of our SCADA for the weekend before the exceeedances it appears that the influent BOD may have been elevated leading to lower dissolved oxygen levels in our aeration basin. We are now collecting composite samples from the influent on weekends as well as holidays to determine if there is increased loadings during these periods. We will be analyzing both COD and Ammonia Nitrogen as both have an associated oxygen demand. On another note, because of what we have been doing with this type of treatment, we have been asked to enter into a research project to study how the nutrient removal process at Mebane is working. Dr. Francis de los Reyes III of the Department of Civil, Construction and Environmental Engineering at North Carolina State University has been awarded a grant from the NC Rural Economic Development Center to study this along with the Global Technology Team at CH2MHILL and the City of Mebane. It is anticipated that the study will officially begin in January 2013 lasting for at least one year. Again, thanks for your department's understanding and willingness to work with us. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile From: Dennis Hodge [mailto:dhodge@cityofinebane.com] Sent: Wednesday, May 09, 2012 5:25 PM To: 'corey.basinger@ncdenr.gov' Cc: rwilson@cityofinebane.com; Tony Bowes (tbowes@cityofinebane.com); Amy Varinoski (avarinoski@cityofinebane.com) Subject: Mebane Wastewater Facility Good Afternoon Corey, I trust you're doing well. I wanted to follow-up my telephone message from this morning. As we discussed last month, the Mebane wastewater facility has been involved in different operating schemes for our plant waste stream. This was, in part, driven by low dissolved oxygen (D.O.) levels in our aeration basin in the during the warmer months in the past several years. During these periods, even though the D.O. levels were below the prescribed industry standard of 1.0 to 2.0 mg/L the plant was able to nitrify to well below our permit limit (2.0 mg/L). We also noticed that, at times, our nitrate levels were lower than expected as well as an increase in our alkalinity due to unintended denitrification. As we were operating in this manner we started researching the different denitrification processes and discovered simultaneous nitrification-denitrification was occurring in our plant. Further research led us to the discovery of the anammox (anaerobic ammonium oxidation) process. I won't go into all of the details of either process but both are driven by lower D.O levels. In a conventional Biological Nutrient Removal (BNR) process several various strains of bacteria are used to convert nitrogen compounds from the wastewater into nitrogen gas, some of which require quite a bit of oxygen as well as the addition of carbon. In the anammox process nitrogen compounds are converted directly into nitrogen gas without the need to supply as much oxygen and no addition of carbon. As Mebane is affected by the Jordan Lake rules and will have a Total Nitrogen effective in 2016 we are looking at different methods for nitrogen removal. At this time this method looks promising. So, the point of this information is to say, that while implementing some of the necessary changes Mebane may have occasional effluent permit limitation exceedances. While we don't expect huge exceedances there may be some. For instance, in April, during the first week, our BOD weekly average was exceeded. The average was 8.16 mg/L with the limitation being 7.5 mg/L. Also, the monthly average was exceeded. The average was 6.17 mg/L with the limitation being 5.0 mg/L. As we got into the last week the BOD average was back down to 4.03 mg/L. We will be installing D.O. probes and control equipment to enhance our process in the next two months. We are installing mixers this week to ensure adequate mixing while we cycle our aerators on and off. In addition, last week one of our three clarifiers had to be taken off line for contracted repairs. The drive train had been leaking oil and needed to be rebuilt. The contractor removed the drive and took it off site for the rebuild. The drive should be reinstalled the latter part of next week. As this is the larger of our three clarifiers there is the potential for BOD exceedances due to it being off line. Thanks Corey for your understanding and willingness to work with the City. Have a great day and please respond so that I'll know you received this. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile � EF PV A140* AUG. NCDENR North Carolina Department of Environment and Natural Resour eS Division of Water Quality Beverly Eaves Perdue Charles Wakild, P.E. Dee Freeman Governor Director Secretary August 21, 2012 Frank Clifton, County Manager Orange County 200 South Cameron Street Hillsborough, NC 27278 Subject: Permit No. WQ0036077 Buckhorn Mebane EDD Sewer Improvements Wastewater Collection System Extension Orange County Dear Mr. Clifton: In accordance with your permit application received July 31, 2012, we are forwarding herewith Permit No. WQ0036077 dated August 21, 2012, to Orange County for the construction and operation of the subject wastewater collection system extension. This permit shall be effective from the date of issuance until rescinded and shall be subject to the conditions and limitations as specified therein. This cover letter shall be considered a part of this permit and is, therefore, incorporated therein by reference. Please pay particular attention to: a) Permit Condition 3 that requires the wastewater collection facilities be properly operated and maintained in accordance with 15A NCAC 02T .0403 or any individual system -wide collection system permit issued to the Permittee, and b) Permit Condition 6 that requires Engineering Certification prior to operation of this collection system extension. Permitting of this project does not constitute an acceptance of any part of the project that does not meet 15A NCAC 02T; the Division of Water Quality's (Division) Gravity Sewer Minimum Design Criteria adopted February 12, 1996 as applicable; and the Division's Minimum Design Criteria for the Fast - Track Permitting of Pump Stations and Force Mains adopted June 1, 2000, as applicable, unless specifically mentioned herein. Division approval is based on acceptance of the certification provided by a North Carolina -licensed Professional Engineer in the application. It shall be the Permittee's responsibility to ensure that the as -constructed project meets the appropriate design criteria and rules. Failure to comply may result in penalties in accordance with North Carolina General Statute §143- 215.6A through §143-215.6C, construction of additional or replacement wastewater collection facilities, and/or referral of the North Carolina -licensed Professional Engineer to the licensing board. In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina, as amended, and other applicable Laws, Rules, and Regulations, permission is hereby granted to Orange County for the construction and operation of: North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone (919) 791-4200 Internet: www.ncwaterquality.org 1628 Mail Service Center Raleigh, NC 27699-1628 FAX (919) 788-7159 An Equal Opportunity/Affirmative Action Employer —- Recycled paper, contains 30% post consumer fiber oy` NCarolina Customer Service 877-623-6748 Orange County Page 2 August 21, 2012 C • Approximately 8,995 linear feet of 18-inch gravity sewer, and • Approximately 6,290 linear feet of 12-inch gravity sewer, and • Approximately 2,140 linear feet of 8-inch gravity sewer, and • A 500 GPM @. 139' TDH pump station with a minimum of duplex pumps, on -site audible and visual high water alarms, and an on -site generator with automatic transfer switch, and • Approximately 12,928 linear feet of 10-inch force main To serve future development as part of the Buckhorn Mebane Economic Development District project, and the discharge of no additional gallons per day (flows will be allocated in future permits for connections to this line) of collected domestic and/or commercial wastewater into the City of Mebane's existing sewerage system, pursuant to the application received July. 31, 201.2, and in conformity with 15A NCAC 02T; the Division's Gravity Sewer Minimum Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as applicable; and other supporting data subsequently filed and approved by the Department of Environment and Natural Resources and considered a part of this permit. The sewage and wastewater collected by this system shall be treated in the City of Mebane Wastewater Treatment Facility, Permit number NC0021474, before being discharged to the receiving stream.' This permit shall become voidable unless the agreement between the City of Mebane and the County of Orange for the collection and final treatment of wastewater is in full force and effect. Any wastewater flow made tributary to this wastewater collection system extension prior to completion of the Engineer's Certification shall be considered a violation of the permit and shall subject the Permittee to appropriate enforcement actions. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within 30 days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150E of North Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. Unless such demands are made, this permit shall be final and binding. If you have any questions or require any additional information regarding this permit, please contact Barry Herzberg, Division of Water Quality, Raleigh Regional Office, at (919) 791-4200, or by e-mail to barry. herzberg@ncdenr.gov. Sincerely D, 121' /. for Charles Wakild, P.E., Dire or Division of Water Quality by S. Daniel Smith Surface Water Quality Supervisor Raleigh Regional Office cc: Orange County Health Department Bill Lester, Jr., PE; Hobbs Upchurch & Assoc., PO Box 1737, Southern Pines, NC 28388 Robert Wilson, Mebane City Manager, 106 E. Washington Street, Mebane, NC 27302 RRO SWP Corey Basinger, WSRO Central Files LWKWA \of NV A rEA NCDENR NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES RALEIGH WASTEWATER COLLECTION SYSTEM EXTENSION PERMIT This permit shall be effective from the date of issuance until rescinded and shall be subject to the following specified conditions and limitations: This permit shall become voidable unless the wastewater collection facilities are constructed in accordance with the conditions of this permit; 15A NCAC 02T; the Division of Water Quality's (Division) Gravity Sewer Minimum Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as applicable; and other supporting materials unless specifically mentioned herein. 2. This permit shall be effective only with respect to the nature and volume of wastes described in the application and other supporting data. 3. The wastewater collection facilities shall be properly maintained and operated at all times. The Permittee shall maintain compliance with an individual system -wide collection system permit for the operation and maintenance of these facilities as required by 15A NCAC 02T .0403. If an individual permit is not required, the following performance criteria shall be met as provided in 15A NCAC 02T .0403: a. The sewer system shall be effectively maintained and operated at all times to prevent discharge to land or surface waters, and any contravention of the groundwater standards in 15A NCAC 02L .0200 or the surface water standards in 15A NCAC 02B .0200. b. A map of the sewer system shall be developed and shall be actively maintained. c. An operation and maintenance plan shall be developed and implemented. d. Pump stations that are not connected to a telemetry system shall be inspected every day (i.e. 365 days per year). Pump stations that are connected to a telemetry system shall be inspected at least once per week. e. High -priority sewer lines shall be inspected at least once per every six-month period of time. f. A general observation of the entire sewer system shall be conducted at least once per year. g. Inspection and maintenance records shall be maintained for a period of at least three years. h. Overflows and bypasses shall be reported to the appropriate Division regional office in accordance with 15A NCAC 02B .0506(a), and public notice shall be provided as required by North Carolina General Statute §143-215.1C. 4. This permit shall not be transferable. In the event there is a desire for the wastewater collection facilities to change ownership, or there is a name change of the Permittee, a formal permit request shall be submitted to the Division accompanied by documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this' request shall be considered on its merits and may or may not be approved. 5. Construction of the gravity sewers, pump stations, and force mains shall be scheduled so as not to interrupt service by the existing utilities nor result in an overflow or bypass discharge of wastewater to the surface waters of the State. 6. Per 15A NCAC 02T .0116, upon completion of construction and prior to operation of these permitted facilities, the completed Engineering Certification form attached to this permit shall be submitted with the required supporting documents to the address provided on the form. A complete certification is one where the form is fully executed and the supporting documents are provided as applicable. Gravity sewers installed below the minimum required slope per the Division's Gravity Sewer Minimum Design Criteria shall not be acceptable and shall not be certified until corrected. If there is an unforeseen obstacle in the field where all viable solutions have been examined, a slope variance can be requested from the Division with firm supporting documentation. This shall be done through a permit modification with fee. Such variance requests will be evaluated on a case -by -case basis. Resolution of such request shall be evident prior to completing and submitting the construction certification. 7. A copy of the construction record drawings shall be maintained on file by the Permittee for the life of the wastewater collection facilities. 8. Failure to abide by the conditions and limitations contained in this permit; 15A NCAC 02T; the Division's Gravity Sewer Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -Track Permitting of Pump Station and Force Mains adopted June 1, 2000 as applicable; and other supporting materials may subject the Permittee to an enforcement action by the Division, in accordance with North Carolina General Statutes §143- 215.6A through §143-215.6C. 9. In the event that the wastewater collection facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement facilities. 10. The issuance of this permit shall not exempt the Permittee from complying with any and all statutes, rules, regulations, or ordinances that may be imposed by other government agencies (local, state and federal) which have jurisdiction, including but not limited to applicable river buffer rules in 15A NCAC 026 .0200, erosion and sedimentation control requirements in 15A NCAC Ch. 4 and under the Division's General Permit NCG010000, and any requirements pertaining to wetlands under 15A NCAC 02B .0200 and 15A NCAC 02H .0500. 11. Noncompliance Notification: The Permittee shall verbally report to a water quality staff member at the Raleigh Regional Office, telephone number 919-791-4200, as soon as possible, but in no case more than 24 hours or on the next working day, following the occurrence or first knowledge of the occurrence of either of the following: a. Any process unit failure, due to known or unknown reasons, that renders the facility incapable of adequate wastewater transport, such as mechanical or electrical failures of pumps, line blockage or breakage, etc.; or b. Any failure of a pumping station or sewer line resulting in a by-pass directly to receiving waters without treatment of all or any portion of the influent to such station or facility. Initial voice mail messages or faxed information shall not be considered as the initial verbal report. Overflows and spills occurring outside normal business hours may also be reported to the Division of Emergency Management at telephone number (800) 858-0368 or (919) 733-3300. Persons reporting any of the above occurrences shall file a spill report by completing Part I of Form CS- VrOS (or the most current Division approved form), within five days following first knowledge of the cc rrence. This report shall outline the actions taken or proposed to ensure that the problem doe not recur. The Director, Division of Water Quality, may take enforcement action for SS 's that are required to be reported to the Division unless it is demonstrated that: The discharge was caused by severe natural conditions and there were no feasible alternatives to the discharge; or The discharge was exceptional, unintentional, temporary, and caused by factors beyond the reasonable control of the Permittee and/or owner, and the discharge could not have been prevented by the exercise of reasonable control. Permit is�ued this the 21 st Day of August 2012. Permit umber W00036077 Orange ounty Buckho n Mebane EDD Sewer Improvements NORTH AROLINA ENV[RONMENTA ANAGEM T COMMISSION 2 for Charl s Wakild, P.E., Director Division of Water Quality by authonty of The Environmental Management Commission by S. Da iel Smith Surface ater Quality Supervisor Raleigh Z,"e gional Office FAST TRACK ENGINEERING CERTIFICATION Permit Number WQ0036077 Orange County Buckhorn Mebane EDD Sewer Improvements August 21, 2012 Complete and submit this form (NO SUBSTITUTES) to the Raleigh Regional Office together with the following: • One copy of the project record drawings (plan & profile views of sewer lines) of the wastewater collection system extension. • Supporting design calculations (selected pumps, system curve, operating point, available storage if portable generator(s) or storage greater than longest past three year outage reliability option selected) for any pump stations permitted as part of this project. Changes to the project should be clearly identified on the record drawings or in written summary form. Permit modifications are required for any changes resulting in non-compliance with this permit, regulations or minimum design criteria. This project shall not be considered complete nor allowed to operate until the Division has received this Engineer's Certification and all required supportina documentation. It is hiahly recommended that this certification be sent in a manner that provides proof of receipt by the Division. The Division does not acknowledge receipt of Fast Track Enaineerina Certifications! ENGINEER'S CERTIFICATION ❑ Partial ❑ Final as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (❑ periodically, ❑ weekly, ❑ full time) the construction of the subject project for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance of this permit; 15A NCAC 02T; the Division of Water Quality's (Division) Gravity Sewer Minimum Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as applicable; and other supporting materials. North Carolina Professional Engineer's Seal, signature, and date: .SEND THIS FORM & SUPPORTING DOCUMENTATION WITH REQUIRED ATTACHMENTS TO THE FOLLOWING ADDRESS RALEIGH REGIONAL OFFICE 1628 MAIL SERVICE CENTER RALEIGH NC 27699-1628 The Permittee is responsible for tracking all partial certifications up until a final certification is received. Any wastewater flow made tributary to the wastewater collection system extension prior to completion of this Engineer's Certification shall be considered a violation of the permit and shall subject the Permittee to appropriate enforcement actions. DWQ use only: Flow from this project is tributary to: Mebane NCDENR North Carolina Department of Environment and Natural Division of Water Quality Beverly Eaves Perdue Charles Wakild, P.E. Governor Director August 24, 2012 Mr. Robert Wilson, City Manager City of Mebane 106 E. Washington Street Mebane, North Carolina 27302 Resources Subject: Compliance Evaluation Inspection — NPDES Permit No. NCO021474 City of Mebane Wastewater Treatment Plant Alamance County Dear Mr. Wilson: Dee Freeman Secretary Jenny Graznak of this office performed a Compliance Evaluation Inspection at the Mebane WWTP in Alamance County on August 22, 2012. Dennis Hodge, Operator in Responsible Charge (ORC), was present for the inspection. This type of inspection consists of two basic parts: an in - office review of facility files and self -monitoring data and an on -site inspection of the facility. This particular inspection evaluated nine (9) areas, and observations from each area are addressed below: 1. Permit The permit became expired May 31, 2011. A draft of the new permit was issued by Division of Water Quality on August 15, 2012. Please provide written comments on this draft no later than September 24, 2012. 2. Self -Monitoring Program A review of.the self -monitoring data submitted for the period June 2011 through May 2012 showed that all parameters were sampled and analyzed per the requirements of the permit. Limit violations were noted in the Monitoring Reports for February 2012 (Fecal Coliform) as well as April and May 2012 (Biochemical Oxygen Demand). These violations were addressed in previous correspondence from this office. 3. Laboratory The plant's on -site laboratory (#138) is certified for the following permit parameters: Residual Chlorine, Fecal Coliform, Conductivity, Dissolved Oxygen, Total Phosphorus, pH, Total Suspended Residue, and Temperature. All lab data, chain of custody forms, confirmation of meter calibrations, and thermometer verification were available during the inspection. Amy Vadnoski is the Lab Supervisor, and Amanda Hill is the Lab Technician. R & A Laboratories analyzes Metals, BOD, Ammonia, Nutrients other than Total Phosphorus, and Fluoride samples for the plant. Meritech, Inc. analyzes Mercury and Toxicity samples. 4. Flow Measurement Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated on an annual basis by Instrument Specialists, Inc. Verification of calibration was available during the inspection. According to documentation, the last calibration event occurred on June 1, 2012. North Carolina Division of Water Quality Winston-Salem Regional Office I Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 One Phone: 336-771-50001 FAX: 336-771-46301 Customer Service:1-877-623-6748 NorthCarolina Internet: www.ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer L " 5. Sludge Handling and Disposal The plant has two sludge digesters. Approximately four times per year, Synagro brings a portable belt press on site to create sludge cakes, which are then transported to the McGill compost facility in New Hill, North Carolina. Synagro removes approximately 600,000 gallons from the sludge digesters during each press event. 6. Operations & Maintenance Dennis Hodge is the ORC, and Anthony Bowes and Amy Varinoski are Back -Up ORCs. No major concerns were noted with respect to operation and maintenance of the facility. The plant operates a preventative maintenance computer program called Hach JOB Cal. The maintenance staff issues work orders once per month and more frequently for repairs, etc. A SCADA system is used to monitor and control some operations at the plant, including pump stations. The plant has a generator that will operate the entire plant except the digesters. The generator is run once per month under load and once per week for maintenance purposes. 7. Facility Site Review Influent is screened and metered. The plant includes two large aerations basins. Only one is currently used as an aeration basin and has six 2-speed surface aerators and two new solar mixers. The other basin is used to hold filtrate from the sludge press and is gradually fed back into the plant. The plant consists of three clarifiers, two sand filters, chlorination, and dechlorination. A small building was recently added to house the tanks of liquid chlorine and liquid sodium bisulfate. 8. Records/Reports The Discharge Monitoring Reports (DMRs), files, operators' logs, and lab data are maintained according to the permit. A copy of this data was available for review during the inspection. Plant data and records are very well organized and maintained. 9. Effluent/Receiving Waters The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. During her site visit, Ms. Graznak also performed a Stormwater Inspection at the South Mebane WWTP. The facility holds General Stormwater Permit No. NCG110025 under the National Pollutant Discharge Elimination System (NPDES) to discharge Stormwater from "Treatment Works." The Stormwater Pollution Prevention Plan (SPPP) is current and complete. Operations staff perform the semi-annual visual monitoring at each of the plant's three stormwater discharge outfalls. Each of the three outfalls is properly labeled and showed no signs of issues or problems. The facility was found to be in compliance with NPDES Permit No. NCO021474 and NPDES General Permit No. NCG110025. Please refer to the attached report for specific details from the inspection. If you have any questions concerning this report, please contact Ms. Graznak or me at (336) 771-5000. Sincerely, �k\_Aa� 1111 W. Corey Basinger Regional Supervisor Surface Water Protection Section cc: WSRO — SWP Central Files — SWP United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 Water C.rlmploance Inspection Rppnrt 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 INI 2 5I 31 NCO021474 111 121 12/08/22 117 181 C I 19I S I 20IJ I Remarks 21111111111111111111111111 111111111111 111111111116 Inspection Work Days Facility Self -Monitoring Evaluation Rating 131 QA ------------- ---------- Reserved ----------- --------- 67I 169 70131 71 U 72 U 73 LU 74 751 I I I I I 11 80 �-+ 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 permit Number) 09:30 AM 12/08/22 10/08/01 Mebane WWTP Exit Time/Date Permit Expiration Date 635 Corregidor Rd Mebane NC 27302 12:00 PM 12/08/22 11/05/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data /// Dennis James Hodge/ORC/919-304-9215/ Name, Address of Responsible OfficialfTitle/Phone and Fax Number Contacted Linda R Holt,106 E Washington St Mebane NC 27302H919-563-6141/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenance Records/Reports Self -Monitoring Program Sludge Handling Disposal 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 Jennifer F Graznak WSRO WQ//336-771-5000/ $ /v4 /12— 61 V Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date v iCa'& ay I3- EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 Permit: NCO021474 Inspection Date: 08/2212012 Owner - Facility: Mebane 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 Solids, pH, DO, Sludge ■ ❑ ❑ ❑ Judge, and other that are applicable? Comment: Ds. H. (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: The permit became expired May 31, 2011. A draft of the new permit was issued by Division of Water Quality on August 15, 2012. Please provide written comments on this draft no later than September 24, 2012. 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? Is the backup operator certified at one grade less or greater than the facility classification? Yes No NA NE ■ ❑ ❑ ❑ Page # 4 Permit: NCO021474 Owner -Facility: Mebane WWTP Inspection Date: 08/22/2012 Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Is a copy of the current NPDES permit available on site? ■ ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? ■ 0 0 I] Comment: A review of the self -monitoring data submitted for the period June 2011 through May 2012 showed that all parameters were sampled and analyzed per the requirements of the permit. 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? ❑ ❑ ■ ❑ Comment: The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. Flow Measurement - Influent 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? Comment: Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated by Instrument Specialists, Inc. The last calibration event occurred on June 1, 2012. ems. e....,.,..� 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: 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? Yes No NA NE n ■ Yes No NA NE ■nn❑ ■■nn Page # 5 Permit: NCO021474 Inspection Date: 08/22/2012 Secondary Clarifier Are weirs level? Is the site free of weir blockage? Is the site free of evidence of short-circuiting? Is scum removal adequate? Owner - Facility: Mebane WWTP Inspection Type: Compliance Evaluation 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'/, of the sidewall depth) Comment: Plant is gradually emptying and cleaning all three clarifiers. Largest one was cleaned in 2012. Aeration Basins Mode of operation Type of aeration system 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/1) Comment: Plant added two new solar mixers. 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? Comment: Are the tablets the proper size and type? Are tablet de -chlorinators operational? Yes No NA NE Yes No NA NE Ext. Air Yes No NA NE Liquid ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ Page # 6 PPIPPP". Permit: NCO021474 Inspection Date: 08/22/2012 De -chlorination Number of tubes in use? Comment: Standby Power Is automatically activated standby power available? Owner - Facility: Mebane WWTP Inspection Type: Compliance Evaluation 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: The plant has a generator that will operate the entire plant except the digesters. Disinfection -Liquid Is there adequate reserve supply of disinfectant? .(Sodium Hypochlorite) Is pump feed system operational? Is bulk storage tank containment area adequate? (free of leaks/open drains) 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: Effluent Sampling 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)? Comment: Effluent sampler is an ISCO 3710. Temperatuer was set for 2 degrees. Yes No NA NE Yes No NA NE Yes No NA NE Yes No NA NE ■❑❑❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■❑❑❑ Page # 7 Permit: NCG110025 SOC: County: Alamance Region: Winston-Salem Compliance Inspection Report Effective: 06/01/08 Expiration: 05/31/13 Owner: City of Mebane Effective: Expiration: Facility: Mebane City-WWTP 701 Corrigidor Rd Contact Person: Michael Hite Directions to Facility: System Classifications: Primary ORC: Secondary ORC(s): On -Site Representative(s): Related Permits: Title: Inspection Date: 08/22/2012 Entry Time: 09:30 AM Primary Inspector: Jennifer F Graznak Secondary Inspector(s): Elon College NC 27244 Phone: 919-563-6141 Certification: Exit Time: 12:00 PM Phone: Phone: 336-771-5000 Reason for Inspection: Routine Inspection Type: Compliance Evaluation Permit Inspection Type: Municipal WWTP > 1 MGD, Stormwater Discharge, COC Facility Status: ■ Compliant ❑ Not Compliant Question Areas: Storm Water (See attachment summary) Page: 1 Permit: NCG110025 Owner - Facility: City of Mebane Inspection Date: 08/22/2012 Inspection Type: Compliance Evaluation Reason for Visit: Routine Stormwater Pollution Prevention Plan Yes No NA NE Does the site have a Stormwater Pollution Prevention Plan? ■ ❑ ❑ ❑ # Does the Plan include a General Location (USGS) map? ■ ❑ ❑ ❑ # Does the Plan include a "Narrative Description of Practices"? ■ ❑ ❑ ❑ # Does the Plan include a detailed site map including outfall locations and drainage areas? ■ ❑ ❑ ❑ # Does the Plan include a list of significant spills occurring during the past 3 years? ■ ❑ ❑ ❑ # Has the facility evaluated feasible alternatives to current practices? ■ ❑ ❑ ❑ # Does the facility provide all necessary secondary containment? ■ ❑ ❑ n # Does the Plan include a BMP summary? ■ ❑ ❑ ❑ # Does the Plan include a Spill Prevention and Response Plan (SPRP)? ■ ❑ ❑ ❑ # Does the Plan include a Preventative Maintenance and Good Housekeeping Plan? ■ ❑ ❑ ❑ # Does the facility provide and document Employee Training? ■ ❑ ❑ ❑ # Does the Plan include a list of Responsible Party(s)? ■ ❑ ❑ ❑ # Is the Plan reviewed and updated annually? ■ ❑ ❑ ❑ # Does the Plan include a Stormwater Facility Inspection Program? ■ ❑ n ❑ Has the Stormwater Pollution Prevention Plan been implemented? ■ ❑ ❑ ❑ Comment: The SPPP is regularly updated. Qualitative Monitoring Yes No NA NE Has the facility conducted its Qualitative Monitoring semi-annually? ■ ❑ ❑ ❑ Comment: The last monitoring events took place on May 5, 2012 and October 11, 2011. Permit and Outfalls Yes No NA NE # Is a copy of the Permit and the Certificate of Coverage available at the site? ■ ❑ ❑ ❑ # Were all outfalls observed during the inspection? ■ ❑ ❑ ❑ # If the facility has representative outfall status, is it properly documented by the Division? ❑ ❑ ■ ❑ # Has the facility evaluated all illicit (non stormwater) discharges? ■ ❑ ❑ ❑ Comment: All three outfalls were labeled. No issues or problems were noted. Page: 3 A" NCDENR North Carolina Department of Environment and Natural ResourceE Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary August 8, 2011 Mr. Robert Wilson, City Manager City of Mebane 106 E. Washington Street Mebane, North Carolina 27302 Subject: Compliance Evaluation Inspection — NPDES Permit No. NCO021474 City of Mebane Wastewater Treatment Plant Alamance County Dear Mr. Wilson: Jenny Graznak of this office performed a Compliance Evaluation Inspection at the Mebane WWTP in Alamance County on August 3, 2011. Dennis Hodge, Operator in Responsible Charge (ORC), was present for the inspection. This type of inspection consists of two basic parts: an in -office review of facility files and self -monitoring data and an on -site inspection of the facility. This particular inspection evaluated nine (9) areas, and observations from each area are addressed below: 1. Permit The permit became effective November 1, 2006 and expired May 31, 2011. The new permit has not been issued by Division of Water Quality yet, so you should continue to operate according to the old permit. 2. Self -Monitoring Program A review of the self -monitoring data submitted for the period July 2010 through May 2011 showed that all parameters were sampled and analyzed per the requirements of the permit. There were no violations of permit limits during this time period. 3. Laboratory The plant's on -site laboratory (#138) is certified for the following permit parameters: Residual Chlorine, Fecal Coliform, Conductivity, Dissolved Oxygen, Total Phosphorus, pH, Total Suspended Residue, and Temperature. All lab data, chain of custody forms, confirmation of meter calibrations, and thermometer verification were available during the inspection. Amy Varinoski is the Lab Supervisor and Amanda Hill is the Lab Technician. R & A Laboratories analyzes Metals, BOD, Ammonia, Nutrients other than Total Phosphorus, and Fluoride samples for the plant. Meritech, Inc. analyzes Mercury and Toxicity samples. 4. Flow Measurement Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated on a quarterly basis by Instrument Specialists, Inc. Verification of calibration was available during the inspection. According to documentation, the last calibration event occurred on June 23, 2011. A new influent flow meter was installed on January 31, 2011. North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-77146301 Customer Service:1-877.623-6748 Internet: www.ncwaterquality.org NorthCarolina Natura!!b An Equal Opportunity 1 Affirmative Action Employer 5. Sludge Handling and Disposal The plant has two sludge digesters. Approximately four times per year, Synagro brings a portable belt press on site to create sludge cakes, which are then transported to the McGill compost facility in New Hill, North Carolina. Synagro removes approximately 600,000 gallons from the sludge digesters during each press event, the last one occurring July 13-22, 2011. 6. Operations & Maintenance Dennis Hodge is the ORC, and Tony Bowes and Amy Varinoski (both Grade III) are Back -Up ORCs. No major concerns were noted with respect to operation and maintenance of the facility. The plant operates a preventative maintenance computer program. The maintenance staff issues work orders once per month and more frequently for repairs, etc. A SCADA system is used to monitor and control some operations at the plant, including pump stations. The plant has a generator that will operate the entire plant aside from the digesters. The generator is run once per month under load and once per week for maintenance purposes. 7. Facility Site Review Influent is screened and metered. The plant includes two large aerations basins. Only one is currently used as an aeration basin and has six 2-speed surface aerators. Four of these aerators run constantly, and the other two operate on timer to assist in nitrate removal (off at night). The other basin is used to hold filtrate from the sludge press and is gradually fed back into the plant. The plant consists of three clarifiers, two sand filters, chlorine gas feed, chlorine contact chamber, and a sulfur dioxide basin. Alum is added for phosphorus removal on an as - needed basis, usually during the summer months. There is a surge tank at the influent. The plant recently switched from gas chlorination and dechorination to liquid chlorine and sodium bisulfate. 8. Records/Reports The Discharge Monitoring Reports (DMRs), files, operators' logs, and lab data are maintained according to the permit. A copy of this data was available for review during the inspection. Plant data and records are very well organized and maintained. 9. Effluent/Receiving Waters The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. The facility was found to be in compliance with NPDES Permit No. NC0021474. Please refer to the attached report for specific details from the inspection. If you have any questions concerning this report, please contact Mrs. Graznak or me at (336) 771-5000. Sincerely, W. Corey Basinger Regional Supervisor Surface Water Protection Section cc: WSRO — SWP Central Files — SWP '41 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 NI 2 15 31 NCO021474 111 121 11/08/03 117 181CI 191 SI 201 J -! 4_ Remarks 21111111111111111111111111111111111111IIIIIIII1116 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved 71 I I 721 NJ 73 lJJ 74 751 I I I I I I 180 67 I 169 70 U J u Section B: FacilityData 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) 09:30 AM 11/08/03 10/06/01 Mebane WWTP Exit Time/Date Permit Expiration Date 635 Corregidor Rd Mebane NC 27302 11:00 AM 11/08/03 11/05/31 Name(s) of Onsite Representative(s)/Tities(s)/Phone and Fax Number(s) Other Facility Data Dennis James Hodge/ORC/919-304-9215/ Name, Address of Responsible OfficiaUTitle/Phone and Fax Number Contacted Linda R Holt,106 E Washington St Mebane NC 27302//919-563-6141/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement operations & Maintenance Records/Reports Self -Monitoring Program Sludge Handling Disposal 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 Jennifer F Graznak WSRO WQ//336-771-5000/ 4J Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date Az bo7cfe, 1)44 - co;120 EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 NPDES yr/mo/day Inspection Type (cont.) 1 3I NC0021474 I11 12I 11/08/03 I17 18ICI Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) 1. Permit The permit became effective November 1, 2006 and expired May 31, 2011. The new permit has not been issued by Division of Water Quality yet, so you should continue to operate according to the old permit. 2. Self -Monitoring Program A review of the self -monitoring data submitted for the period July 2010 through May 2011 showed that all iolations of parameters were sampled and analyzed per the requirements of the permit. There were no v permit limits during this time period. 3. Laboratory The plant's on -site laboratory (#138) is certified for the following permit parameters: Residual Chlorine, Fecal Coliform, Conductivity, Dissolved Oxygen, Total Phosphorus, pH, Total Suspended Residue, and Temperature. All lab data, chain of custody forms, confirmation of meter calibrations, and thermometer verification were available during the inspection. Amy Varinoski is the Lab Supervisor and Amanda Hill is the Lab Technician. R & A Laboratories analyzes Metals, BOD, Ammonia, Nutrients other than Total Phosphorus, and Fluoride samples for the plant. Meritech, Inc. analyzes Mercury and Toxicity samples. 4. Flow Measurement Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated on a quarterly basis by Instrument Specialists, Inc. Verification of calibration was available during the inspection. According to documentation, the last calibration event occurred on June 23, 2011. A new influent flow meter was installed on January 31, 2011. 5. Sludge Handling and Disposal The plant has two sludge digesters. Approximately four times per year, Synagro brings a portable belt press on site to create sludge cakes, which are then transported to the McGill compost facility in New Hill, North Carolina. Synagro removes approximately 600,000 gallons from the sludge digesters during each press event, the last one occurring July 13-22, 2011. 6. Operations & Maintenance Dennis Hodge is the ORC, and Tony Bowes and Amy Varinoski (both Grade III) are Back -Up ORCs. No major concerns were noted with respect to operation and maintenance of the facility. The plant operates a preventative maintenance computer program. The maintenance staff issues work orders once per month and more frequently for repairs, etc. A SCADA system is used to monitor and control some operations at the plant, including pump stations. The plant has a generator that will operate the entire plant aside from the digesters. The generator is run once per month under load and once per week for maintenance purposes. 7. Facility Site Review Influent is screened and metered. The plant includes two large aerations basins. Only one is currently used as an aeration basin and has six 2-speed surface aerators. Four of these aerators run constantly, and the other two operate on timer to assist in nitrate removal (off at night). The other basin is used to hold filtrate from the sludge press and is gradually fed back into the plant. The plant consists of three clarifiers, two sand filters, chlorine gas feed, chlorine contact chamber, and a sulfur dioxide basin. Alum is added for phosphorus removal on an as -needed basis, usually during the summer months. There is a surge tank at the influent. The plant recently switched from gas chlorination and dechorination to liquid chlorine and sodium bisulfate. Page # 2 Permit: NC0021474 Owner - Facility: Mebane wWTP Inspection Date: 08/03/2011 Inspection Type: Compliance Evaluation 8. Records/Reports The Discharge Monitoring Reports (DMRs), files, operators' logs, and lab data are maintained according to the permit. A copy of this data was available for review during the inspection. Plant data and records are very well organized and maintained. 9. Effluent/Receiving Waters The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. Page # 3 Permit: NCO021474 Owner - Facility: Mebane VVVVTP Inspection Date: 08/03/2011 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 Solids, pH, DO, Sludge ■ Q 0 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? ■ ❑ ❑ Q Is the facility as described in the permit? ■ Q O ❑ # Are there any special conditions for the permit? Q ■ Q Is access to the plant site restricted to the general public? ■ ❑ Q O Is the inspector granted access to all areas for inspection? ■ ❑ ❑ 0 Comment: The permit expired May 31, 2011. The new permit has not been issued by DWQ yet, so you should continue to operate according to the old permit. Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? ■ Q C3 Q Is all required information readily available, complete and current? ■ ❑ Q Q Are all records maintained for 3 years (lab. reg. required 5 years)? ■ Q Q ❑ Are analytical results consistent with data reported on DMRs? ■ ❑ Q 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? ■ n ❑ Q Has the facility submitted its annual compliance report to users and DWQ? ■ n n C1 (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? ❑ ❑ ■ 0 Is the ORC visitation log available and current? ■ n n n Is the ORC certified at grade equal to or higher than the facility classification? ■ ❑ fl f] Is the backup operator certified at one grade less or greater than the facility classification? ■ n n n Page # 4 Permit: NCO021474 Inspection Date: 08/03/2011 Owner - Facility: Mebane V W rP Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Is a copy of the current NPDES permit available on site? ■ O 0 O Facility has copy of previous year's Annual Report on file for review? ■ 0 ❑ O Comment: Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? ■ ❑ ❑ El Are the receiving water free of foam other than trace amounts and other debris? ■ Q ❑ Cl If effluent (diffuser pipes are required) are they operating properly? ❑ 0 ■ El Comment: Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? ■ ❑ Q ❑ Is flow meter calibrated annually? ■ Q 0 Q Is the flow meter operational? ■ Q 0 0 (If units are separated) Does the chart recorder match the flow meter? ■ 11 ❑ Q Comment: Anew influent flow meter was installed on January 31, 2011. Aerobic Digester Yes No NA NE Is the capacity adequate? ■ Q ❑ 0 Is the mixing adequate? ■ ❑ ❑ Q Is the site free of excessive foaming in the tank? ■ 0 O 11 # Is the odor acceptable? ■ Q 0 0 # Is tankage available for properly waste sludge? ■ 0 0 Comment: Bar Screens Yes No NA NE Type of bar screen a.Manual Q b. Mechanical ■ Are the bars adequately screening debris? ■ n Q ❑ Is the screen free of excessive debris? ■ Q 0 0 Is disposal of screening in compliance? ■ Q Q Q Is the unit in good condition? ■ n Q n Comment: Page # 5 Permit: NCO021474 Owner -Facility: Mebane WWTP Inspection Date: 08/03/2011 Inspection Type: Compliance Evaluation 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? Is the return rate acceptable (low turbulence)? Is the overflow Gear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately % of the sidewall depth) Comment: Aeration Basins Mode of operation Type of aeration system 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/1) Comment: 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? Comment: Yes No NA NE Ext. Air Surface Yes No NA NE Liquid ■❑❑❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Page # 6 Permit: NC0021474 Inspection Date: 08/03/2011 Owner -Facility: Mebane VWVTP Inspection Type: Compliance Evaluation De -chlorination Yes No NA NE Are the tablets the proper size and type? ❑ ❑ ■ ❑ Are tablet de -chlorinators operational? ❑ ❑ ■ ❑ Number of tubes in use? Comment: Disinfection -Liquid Yes No NA NE Is there adequate reserve supply of disinfectant? ■ ❑ ❑ ❑ (Sodium Hypochlorite) Is pump feed system operational? ❑ ❑ ❑ ■ Is bulk storage tank containment area adequate? (free of leaks/open drains) ■ ❑ ❑ ❑ Is the level of chlorine residual acceptable? ■ Q ❑ ❑ Is the contact chamber free of growth, or sludge buildup? ■ ❑ ❑ ❑ Is there chlorine residual prior to de -chlorination? ■ ❑ ❑ ❑ 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)? ■ ❑ ❑ ❑ Comment: Upstream / Downstream Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? ■ ❑ ❑ ❑ Comment: In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. Page # 7 PPPPPF, NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Governor Director August 12, 2010 Mr. Dennis Hodge City of Mebane 106 E. Washington Street Mebane, NC 27302 SUBJECT: Chronic Effluent Toxicity Test Results Mebane WWTP NPDES Permit NC00021474/001 Alamance County Dear Mr. Hodge, Dee Freeman Secretary The attached memorandum summarizes the test results of a bioassay performed at Mebane's WWTP during the week of July 19th, 2010. The test used Ceriodaphnia dubia as the test organism. The test result was a pass in an effluent concentration of 90%. The test information is found in the attached memorandum. Should you have any questions, please contact me at (336) 771-4957. Sincerely, i*fer Carter Environmental Specialist Winston-Salem Regional Office Division of Water Quality cc: WSRO Files SWP Central Files North Carclina Division of Waier Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-4630'� Customer Service: 1-877-623-6748 Internet: wvm;.ncwaterquaiity.org NorthCarohna Naturally An Equal Opportunity' Affirmaiive Action Employer Division of Water Quality August 4, 2010 MEMORANDUM To: Steve Tedder Surface Water Protection, WSRO Through: Cindy A. Moore Supervisor, Aquatic Toxicology Unit From: Carol Hollenkamp C Quality Assurance Officer, Aquatic Toxicology Unit Subject: Whole effluent toxicity test results Mebane WWTP NPDES Permit # NC0021474/001 Alamance County The aquatic toxicity test using flow proportional composite samples of effluent discharged from Mebane WWTP has been completed. Mebane WWTP has an effluent discharge permitted that is 2.5 million gallons per day (MGD) entering Moadams Creek (7Q10 of 0.0 CFS). Whole effluent samples were collected on July 13 and July 16 by Amy Vannoski (facility representative) and transferred by Mike Mickey (DWQ) for use in a chronic Ceriodaphnia dubia pass -fail toxicity test. The test using these samples resulted in a pass. Toxicity test information follows. Test Type 3-Brood Ceriodaphnia dubia chronic pass fail Test Concentrations 90% Test Result Pass Control Survival 100% Control Mean Reproduction 26.6 neonates Test Treatment Survival 100% Treatment Mean Reproduction 25.4 neonates First Sample pH 7.10 SU First Sample Conductivity 557 micromhos/em First Sample Total Residual Chlorine <0.1 mg/L Second Sample pH 7.00 SU Second Sample Conductivity 464 micromhos/cm Second Sample Total Residual Chlorine <0.1 mg/L Test results for the above samples indicate that the effluent would not be predicted to have water quality impacts on receiving water. These samples were split and sent to Meritech for testing. The chronic Ceriodaphnia dubia pass fail test run by Meritech also passed at 90% test concentration. Please contact us if further effluent toxicity monitoring is desired. We may be reached at (919) 743-8401. Basin: CPF02 cc: Central Files Jenifer Carter, WSRO Aquatic Toxicology Unit Cnvtronmencat ociences oecuur, SAMPLE COLLECTION FO ARO FRO MRO RRO WaRO WiRO�WS` RO I Facility/Water Body NPDES # 1 NC 1 0 1 0 �-L/167 zl Outfall # �i County Basin/Sub-basin P U Receiving Stream Collector(s) (print) Grab F1 Composite Date Began Time B 17 //S// e an Date End Time End /6 / l� �� Sampling Site����U���t Description Container: �L (1 gal) PE cubitainer ❑Other (describe) # of containers % Chlorinated: [✓]'`Yes ❑ No Collected on Ice: [i�'�Yes ❑ No Shipped on Ice: es ❑ No Method of Shipment: Courier [' Bus ❑ Staff ❑ Other (explain): _ t .. 'f_!1 _Il / 1-415 1', 1 1%.114 iCPP rPvPrcP fnr arlrlitinnal transfers) 1JaMl/L1111G Vl L1 a11311.1 U I Comments: )-\)C "Sp lit" sample, s litting lab name: `RN``t��� "Pack sample with su icient ice to maintain temperature oj u.0 to 4.0 L' unto uettver w H. u j- U Collector(s) Signature: l l �'� � V� �GL'���' Date: For Lab Use Only: ATU Sample No. Temperature @ receipt, °C Rcd on Ice RECEIVED date time by from CONDUCTIVITY, mhos/cm - µmhos/cm date time by TRC, mg/L, date time by F Lab Comments: Iship samples - am les to: DWQ/Environmental Sciences Branch Aquatic Toxicology Unit Mail Service Center 1621 Raleigh, NC 27699-1621 ESB Courier 4: 520101 Street address 4401 Reedy Creek Road Raleigh, NC 27607 phone: (919) 733-2136 P�CDiv. Of Water Quality Region O�iICITY SAMPLE COLLECTION FO ARO FRO MRO RRO WaRO WiRO SRO Facility/Water Bodyo- NPDES # I NC 1 0 1 0 / M Outfall # County I 1- 1e4'- %I7 4 n C e Basin/Sub-basin v CZ Receiving Stream I oada mS Collector(s) (print) Grab Composite Date Sampling Site ,�f"i (1e ✓l Description aSamples per Hour for E Hours Date End Time End Container: K4L (1 gal) PE cubitainer ❑Other (describe) # of containers_ Chlorinated: E 1?Ves ❑ No Collected on Ice: Q Yes ❑ No Shipped on Ice: Z Yes ❑ No Method of Shipment: Courierg Bus ❑ Staff 0 Other (expl)O�Q! 1 ) nata/t;— of trancfar to �c3aiaanrr• t1Y /ri rl� h,n✓ ai�fo / 6\� kee rP.vP.rSP. fhr ndditlnnal tram SferSi Comments: &-77c z> Al iV 7 I 12 "Split' sample, splitting lab name: Q Ak *.*Pack sample with sufficient ice to maintain temperature of 0.0 to 4. 0"C until delive to ATV Lab * * Collector(s) %,,,,, Sienature: I�GI Jjl7 U�,%�i-� Date: 7 /U ATU Temperature Red Sample No. @ receipt, °C on Ice RECEIVED CONDUCTIVITY, TRC, date mhos/cm - µmhos/cm mg/L time date date by time time from by by Lab Comments: IShip samples to: DWQ/Environmental Sciences Branch Aquatic Toxicology Unit Mail Service Center 1621 Street address: 4401 Reedy Creek Road Raleigh, NC 27699-1621 Raleigh, NC 27607 ESB Courier #: 520101 phone: (919) 733-2136 PPFFr' 1 4 - 0 rh NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Charles Wakild, P. E. Governor Director August 15, 2012 Mr. Dennis J. Hodge Wastewater Director City of Mebane 106 E. Washington St. Mebane, NC 27302 Subject: Draft NPDES Permit Permit No. NCO021474 Mebane WWTP Facility Class IV Alamance County Dear Mr. Hodge: Dee Freeman Secretary The Division of Water Quality (DWQ) has drafted a NPDES Permit for the above referenced facility. The permit authorizes the City of Mebane to discharge up to 2.5 MGD of treated wastewater from the Mebane WWTP to the Moadams Creek, a class WS-V NSW water in the Cape Fear River Basin. The permit includes discharge limitations/or monitoring for flow, BOD5, ammonia nitrogen, total suspended solids, dissolved oxygen, total residual chlorine, fecal coliform, total nitrogen, total phosphorus, fluoride, copper, zinc, and mercury, along with other parameters. Please be aware that with the adoption of the Jordan Lake Nutrient Management Strategy rules, there was a reclassification of Moadams Creek to a WS-V stream. In accordance with Senate Bill 810 adopted on July 16, 2012, facilities discharging to WS-V streams located in the Jordan Reservoir watershed are not subject to water quality standards set out in 15A NCAC 2B .0218(3)(e) through (3)(h) except under certain conditions. A review of data has indicated that the Mebane WWTP does not meet any of those conditions. The following procedure has been implemented by DWQ: Total residual chlorine (TRC) compliance level changed to 50 ugLl. Effective March 1, 2008, the Division received EPA approval to allow a 50ug/1 TRC compliance level. This change is due to analytical difficulties with TRC measurements. Facilities will still be required to report actual results on their monthly discharge monitoring report (DMR) submittals, but for compliance 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: 919-807-6300 \ FAX: 919-807-6492 \ Customer Service: 1-877-623-6748 Internet: www.ncwaterguality.org An Equal Opportunity 1 Affirmafive Action Employer one NhCarohna Mr. Hodge August 15, 2012 Page 2 of 3 purposes, all TRC values below 50 ug/1 will be treated as zero. A footnote regarding this has been added to the effluent page. The following modifications were made to the draft permit: • An annual load limit of 40,225 pounds per year (lb/yr) for total nitrogen has been added to the permit based on implementation of the Jordan Lake Nutrient Management rules. There is an explanatory footnote (#9) to the effluent page that denotes the effective date of calendar year 2016 for the total nitrogen limit. & • The monitoring frequency for fluoride has been reduced to monthly based on Rsvised Division procedures. The mon y average and daily maximum limits of 1.8 mg/1 for fluoride will remain in the permit. • Based on evaluation of submitted data, the weekly average limit for mercury has removed because there is no reasonable potential to exceed the water quality standard. Quarterly monitoring for mercury will remain in the permit. • The monitoring frequency for total copper, total zinc and chloride was reduced to quarterly based on an evaluation of submitted data. • Minor language has been modified in condition A.4. Chronic Toxicity Permit Limit. In addition, a new paragraph regarding data submittal had been added (second paragraph from the end of the condition). • Please note the following in Special Condition A.S. Effluent Pollutant Scan: 1) Language updated to note three scans must be completed during the permit cycle, 2) mercury must be sampled using EPA Method 1631E; 3) DWQ Water Quality Section has been corrected to the Surface Water Protection Section. Special Condition A. 9. Nitrogen Optimization has been updated to note the submission of the plan by the City of Mebane in 2010. At this time, the Division is submitting a notice to the newspapers of general circulation in Alamance County, inviting comments from you or your representative, the public and other agencies on the draft permit. The notice should be published on or about August 22, 2012. Following a 30-day comment period, we will review all pertinent comments received and take appropriate action on the permit issuance. rp 7r.odge August 15, 2012 Page 3 of 3 Please provide written comments on the draft permit no later than September 24, 2012. If you have any questions, please contact me at (919) 807-6386 or jackie.nowell@ncdenr.gov Respectfully, Jacquelyn M. Nowell NPDES Complex Permitting Unit Attachments cc: Winston Salem Regional Office/Surface Water Protection Section (ecopy) Winston Salem Regional Office/ DWR/ Public Water Supply (ecopy) Steve Reid (ecopy) PERCS/Attu: Sarah Morrison (ecopy) EPA Region IV/Attu: Karrie-Jo Shell Aquatic Toxicology (ecopy) ESS/Carrie Ruhlman (ecopy) NPDES File Permit No. NC0021474 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE E ATION SYSTEM In compliance with the provisions of North Ci and regulations promulgated and adopted by Commission, and the Federal Water Pollution is hereby authorized to discharge to receiving in accordanci Parts I, II, III, This permit shall become of Me Zeral Statute 143 4 1, other lawful standards Carolina Enviro 1 1 Management ct, as annded, the at the Fear River Basin requirements, and other conditions set forth in ...................................................................................... xxxxxxxxxxxxxx. This permit and authorization to discharge shall expire at midnight on ................................ May 31, 2016. Signed this day ......................... xxxxxxxxxxxx. DRAFT Charles Wakild, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit No. NC0021474 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. is hereby authorized to: 1. The City of Mebane Continue to operate an existing 2.5 MGD wastewater Wastewater Treatment Plant, on 635 Corrigidor Ro d Alamance County, and consisting of: • influent bar screen • grit chamber • dual aeration basins • three final clarifiers • sand filters • chlorine contact chamber • dechlorination • aerobic sludge d<t�rel 2. Discharge from saidMoadams C w lity located at the Mebane southwest of Mebane, specified on the attached map into the ors in the Cape Fear River Basin. Permit No. NCO021474 A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS -DRAFT During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: 01"m Flow 2.5 MGD Continuous Recording Influent or Effluent Total Monthly Flow (MG) Monitor & Report Mon Rec. or Calc. Influent or Effluent BOD, 5 day, 20°C (April 1 -October 31) Z 5.0 mg/L 7.5 mg/L Composite Influent & Effluent BOD, 5 day, 20°C (November 10.0 mg/L 15.0 mg/L Composite Influent & Effluent 1 - March 31) Total Suspended SolidsZ 30.0 mg/L 45.0 mg/L Daily Daily Composite iposite Influent & Effluent Effluent NH3 as N 2.0 mg/L 6.0 mg/L (April 1 - October 31) NH3 as N (November 1 -March 31) 4.0 mg/L 12.0 mg/L Co Effluent Dissolved Oxygen dMily Grab Effluent pH _T&Paily Grab Effluent Temperature (°C) Grab Effluent Fecal Coliform 2 00QOmL 400/10 Dai Grab Effluent (geometric mean) Total Residual Chlorines Ji 17 I Grab Effluent Conductivity- Monitcft Report (mg Grab Effluent TKN Weekly Composite Effluent NO3-N + NO2-N on' rt (mg/L)` Weekly Composite Effluent Total Nitrogen, L) Weekly Composite Effluent TN Load 7 e �� onito = ort (lb/m 0° ` Monthly Calculated Effluent 40,2 rp9 [QY6 Annually Total Phospho '%k Mon 4Weport Weekly Composite Effluent TP Load �,8 Mon Repo o) [QM665] Monthly Calculated Effluent 61b/yr 65] Annually Fluoride : 1.8 mg/L', :.; 1.8 mg/L Monthly Composite Effluent Total Mercury10 Quarterly Grab Effluent Total Copper3.AM Quarterly Composite Effluent Total Zinc Quarterly Composite Effluent Chloride Quarterly Composite Effluent Chronic Toxicity 11 Quarterly Composite Effluent Effluent Pollutant Scan lZ Monitor & Report Footnote 10 Footnote 10 Effluent All footnotes are listed on the following page. -"�qPermit No. NC0021474 Footnotes: 1. See Special Condition A. (2.) for instream sampling locations and requirements. Instream monitoring requirements may be provisionally waived per Condition A. (3.). 2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15 % of the respective influent value (85% removal). 3. The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/L. 4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. 5. The Division shall consider all effluent total residual chlorine values reported below 50 µg/1 to be in compliance with the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 jig/I. 6. TN = TKN + NO3-N + NO2-N, where TN is total nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively. k 7. TN or TP Load is the mass quantity of Total Nitrogen or Phosphorus d' d in a given period of time. See Special Condition A. (8.), Calculation of Total Nitrogen or Total Phosphorus 8. Compliance with mass limits shall be determined in accordance ndition A. (7.), Annual Limits for Total Nitrogen or Total Phosphorus. 9. Per the Jordan Lake Wastewater Discharge Rule (15A NCA Y .0270) as mo y North Carolina Session Law 2011- 394 (HB119), the annual mass Total Nitrogen limit shall ve beginning wi dar year 2016, unless the discharger has received by December 31, 2016, an auth on -to -construct permit uction, installation, or alteration of the treatment works for purposes of compl ith this limit, in which ca limit shall be effective beginning with calendar year 2018. fi 10. Mercury samples shall be analyzed using EP, Method 1631E 11. Chronic Toxicity (Ceriodaphnia) P/F at 90% ting in Janua' my and October (see cial Condition A. (4.)). 12. The permittee shall perform three Effluent ns during th of this permit. (See Special Condition A. (5.)). There shall be no discharge of floating s s . le fo ther than trace amounts. A.(2.) INSTREAM SAMPLE LECATIONS 1. U-U Highway 54. F0 hLe-SepM 1Meek (October- May) U, D1, D2, D3 t) 1Meek (October- May) U, D1, D2, D3 (June — 1Meek (October — May) U, D1, D2, D3 (June —Seat) 1/Week (October — Mav) U, D1, D2, D3 100 feet ischarge, D1- Downstream at NCSR 1940, Moadams Creek, D2 - 6. n ILpackAWk at NCSR 1936, and D3 - Downstream at Back Creek at NC A.(3.) PROVISIONAL WAIVER OF INSTREAM MONITORING REQUIREMENTS Instream monitoring requirements in this NPDES permit shall be provisionally waived so long as the Permittee remains a member of the Upper Cape Fear River Basin Association and the Association continues to function as approved by the Division and Environmental Management Commission. If the Permittee does not participate in the Association or if the Association ceases to function, the instream monitoring requirements in this permit become effective immediately; and the Division may reopen this permit by administrative letter to establish additional instream monitoring requirements, it deems necessary to adequately characterize the effects of the discharges on water quality in the receiving stream. ppppppp, Permit No. NC0021474 A.(4.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 90%. The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The tests will be performed during the months of January, April, July, and October. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. If the test procedure performed as the first test of any single results in a failure or ChV below the permit limit, then multiple -concentration testin a performed at a minimum, in each of the two following months as described in "Nort a Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or su a sions. The chronic value for multiple concentration tests w highest concentration having no detectable impaj concentration that does have a detectable impair "detectable impairment," collection methods, expo specified in the "North Carolina Phase II Chronic N1 February 1998) or subsequent versions' f All toxicity testing results required as pa p4 r. Discharge Monitoring Form (MR-1) for th n pass/fail results using the p eter code B, D address. If reporting Chr esults us the (original) is to be sent t ollow ddress 1621 Complete . n atic Toxi I st F than 30 da ter the end o� e Test data shall mplete, acc concentration/re a data, an designate signature.' 1 residual reported if chlorine is�e� ed fa ''determined" g the geometric mean of the of reproduction . rvival and the lowest of reproduction or �J al. The definition of 4iegmes� d further ' tical methods are w fl oxicity Test dure" (Revised- * , DWQ Form AT-3 Sciences Section sha=iiod e With the Environmental Sciences Section no later r for which the report is made. incl 1 supporting chemical/physical measurements and all -ertifie y laboratory supervisor and ORC or approved Lsiine of the effluent toxicity sample must be measured and nfection of the waste stream. Should there be no discharfrom the facility during a month in which toxicity monitoring is required, the permittee will c' ete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Section at the address cited above. Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required during the following month. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. If the Permittee monitors any pollutant more frequently than required by this permit, the results of such monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT Forms submitted. Permit No. NC0021474 NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring. pppppp" Permit No. NC0021474 A.(5.) EFFLUENT POLLUTANT SCAN The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One scan must be performed in each of the following years: 2013, 2014, and 2015. Analytical methods shall be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are present in concentrations greater than applicable standards and criteria. Samples should be collected with one quarterly toxicity test each year, and must represent seasonal variation [i.e. do not sample in the same quarter every year]. Unless otherwise indicated, metals shall be analyzed as "total recoverable." Ammonia (as N) Chlorine (total residual, TRC) Dissolved oxygen Nitrate/ Nitrite Total Kjeldahl nitrogen Oil and grease Total Phosphorus Total dissolved solids Hardness Antimony Arsenic Beryllium Cadmium Chromium Copper Lead Mercury (EPA Nickel Selenium Silver Zinc Total Acrolein Acrylonitrile *. Benzene Bromoform r� Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane 2-chloroethylvinyl ether Chloroform Dichlorobromomethane 1,1-dichloroethane 1,2-dichloroethane Trans-1,2-dichloroethylene 1,1-dichloroethylene 1,2-dichloropropane 1,3-dichloropropy Ethylbenzene Methyl bromidW Methyl chlo Methyle _d 1,1,2,2-te oro Tetrachloro' I 2,4,6-trichlorophenol Acenaphthene Acenaphthylene Anthracene Benzidine Benzo(a)anthracene Benzo(a)pyrene 3,4 benzofluoranthene Benzo(ghi)perylene Benzo(k)fluoranthene Bis (2-chloroethoxy) methane Bis (2-chloroethyl) ether Bis (2-chloroisopropyl) ether Bis (2-ethylhexyl) phthalate 4-bromophenyl phenyl ether Butyl benzyl phthalate 2-chloronaphthalene chlorophenyl phenyl ether 1 phthalate 1,3-dichlorobenzene 1,4-dichlorobenzene 3,3-dichlorobenzidine Diethyl phthalate Dimethyl phthalate 2,4-dinitrotoluene 2,6-dinitrotoluene 1,2-diphenylhydrazine Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclo-pentadiene Hexachloroethane Indeno (1,2,3-cd) pyrene Isophorone Naphthalene Nitrobenzene N-nitrosodi-n-propylamine N-nitrosodimethylamine N-nitrosodiphenylamine Phenanthrene Pyrene 1,2,4-trichlorobenzene Reporting. Test results shall be reported on DWQ Form- A MR-PPA1(or in a form approved by the Director) by December 31st of each designated sampling year. The report shall be submitted to the following address: NCDENR/DWQ/Central Files,1617 Mail Service Center, Raleigh, North Carolina 27699-1617. "N4 Permit No. NC0021474 A.(6.) NUTRIENT ALLOCATIONS (a.) The following table lists the Total Nitrogen (TN) and Total Phosphorus (TP) allocations assigned to, acquired by, or transferred to the Permittee in accordance with the Jordan Lake nutrient management rule (T15A NCAC 02B .0270) and the status of each as of permit issuance. For compliance purposes, this table does not supersede any TN or TP limit established elsewhere in this permit or in the NPDES permit of a compliance association of which the Permittee is a Co- Permittee Member. Total Nitrogen Allocation (b.) .ered a 1 such ppppppp, Permit No. NC0021474 A.(7.) ANNUAL LIMITS FOR TOTAL NITROGEN OR TOTAL PHOSPHORUS (a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits for NPDES dischargers in the Jordan Lake watershed are annual limits and apply on a calendar year basis. (b.) For any given calendar year, the Permittee shall be in compliance with the annual TN (or TP) Load limit in this Permit if: (i.) the Permittee's annual TN (or TP) Load is less than or equal to the effective limit, or (ii.) the Permittee is a Co-Permittee Member of a compliance association. (c.) The TN (or TP) Load limit in this Permit may be modified as the result of allowable changes in the Permittee's allocations. (i.) Allowable changes include those resulting from p "`e of TN (or TP) allocation from an authorized mitigation banker, the Ecosystem E ent Program, or other source allowed under applicable regulations; purcha e, or lease of allocation between the Permittee and other dischargers, re 4 ation; an r transactions approved by the Division. (ii.) The Permittee may request a modific of the TN (or TP) Loa it in this Permit to reflect allowable changes in its allocatio (A) Upon receipt of timely d proper ap Division wiII9Wify the permit as appropriate and in ac e with state deral program requirements. (B) Changes in TN (or TP) e effecti January 1 of the year following permit modification. The a sio receiv ication no later than August 31 for changes. osed for the llow, dar ,. (iii.) Any requests on shou es N R/ D ES Pro s Attn rdan Lak : 'atershed Coordinator 6 rvice er s 699 (d.) If ittee is a ber -permi approved compliance association on January 1 of a n year, its T TP arges duruig that year are governed by that association's group S permit an limi ein. (i.) The P "` ee shall be dere Co-Permittee Member for any given calendar year in which it ntified as h in Appendix A of the association's group NPDES permit. (ii.) Association ""'g (s) embers' TN and TP allocations will be updated annually and in accordance wi federal program requirements. (iii.) If the Permittee in _s to join or leave a compliance association, the Division must be notified of the proposed action in accordance with the procedures defined in the association's NPDES permit. (A) Upon receipt of timely and proper notification, the Division will modify the permit as appropriate and in accordance with state and federal program requirements. (B) Membership changes in a compliance association become effective on January 1 of the year following modification of the association's permit. (e.) The TN and TP monitoring and reporting requirements in this Permit remain in effect throughout the term of the Permit and are not affected by the Permittee's membership in a compliance association. Permit No. NC0021474 A.(8.) CALCULATION OF TOTAL NITROGEN OR TOTAL PHOSPHORUS LOADS (a.) The Permittee shall calculate monthly and annual TN Loads as follows: (b.) (i.) Monthly TN (or TP) Load (lb/mo) = TN (or TP) x TMF x 8.34 where: TN or TP = the average Total Nitrogen or Total Phosphorus concentration (mg/L) of the composite samples collected during the month TMF = the Total Monthly Flow of wastewater discharged during the month (MG/mo) 8.34 = conversion factor, from (mg/LAG) to pounds (ii.) Annual TN (or TP) Load (lb/yr) = Sum of the 1 year } TN (or TP) Loads for the calendar The Permittee shall report monthly Total Nitro d Total lb/mo) in the appropriate discharge monito ' port for each: calendar year's results (lb/yr) with the De r report for that A.(9.) NITROGEN OPTIMIZATIO On February 5, 2010, the City of Meba wastewater discharges. It is expected continue to evaluate its treatment facia reduce nitrogen discharges roces: us results (mg/L and and shall report each imize the reduction of nitrogen in its will implement these measures and 6sses to make reasonable efforts to -215.1 AWthe implementing rules found in Title 15A of ter specifica11y,15A NCAC 2H.0112(b) (1) and I the Director of DWQ may reopen this !itorin the charge. The additional monitoring will within the Cape Fear River Basin, and shall be consistent ike Division and affected stakeholders. ppppl09:50 9195636144 1p PAGE 02/02 of W A Te,9 State of North Carolina `p� OG Department of Environment and Natural Resources Pr Division of Water Quality o Flow Tracking/Acceptance for Sewer Extension Permit Applications (FTSE—1.0/07) Project Applicant Name: City of Mebane Project Name for which flow is being requested: NA More than one F7SE-10/07 may be required./or a single project if the owner of the WWTP is not responsible for all pump stations along the route of the proposed wastewater flow, I. Complete this section only if you are the owner of the wastewater treatment plant. a. WWTP Facility Name: City of Mebane WWTP b. WWTP Facility Permit 4: NCO021474 c. WWTP facility's permitted flow d. Estimated obligated flow not yet tributary to the e. WWTP facility's actual avg. flow f. Total flow for this specific request g. Total actual and obligated flows to the facility h. Percent of permitted flow used All. flows are in MOD 2.50 WWTP 0.717 1.0 NA 1.807 72.3 II. Complete this section for each. pump station you are responsible for along the route of this proposed wastewater flow. List pump stations located between the project connection point and the WWTP Pump Station Name Approx. Capacity, MGD Approx. Current Avg. (Finn/Design) Daily Flow, MGD 111. Certification, Statement: I, Dennis Hodae , certify that, to the best of my knowledge, the addition of the volume of wastewater to be permitted in this project has been evaluatedalong the route to the receiving wastewater treatment facility and that the flow from this project is not anticipated to cause any capacity related sanitary sewer overflows or overburden any downstream pump station en route to the receiving treatment plant under normal circumstances. This analysis has been performed in accordance with local established po ides and. procedures using the best available data. This certification applies to those items listed above if ections I and JI for which J am the responsible party. Signature of this form indicates Signing tt TO IF�f ZP� 11--Q Signature 07/12/2012 Date PPPPP2P- 09:50 9195636144 106 E. Washington Street Mebane, NC 27302 919-304.9215 (office) 919-663-6144 (fax) dhodge@cAyoftwbane.com FaX To: Steve Mauney From: Dennis Hodge Fax 336--771-4630 Page(s) to follovw. 1 Phone: Datec07MG12012 Re: cc: PAGE 01/02 O urgent O For Review O Please Comment O Please Reply O Please Recycle Good Morning Steve, Here is Mebane's FTSE for the first semi-annual period of 2012. Contact me with questions. Thanks, Dennis 01/12/2012 16:54 9195636144 PAGE 02/02 State of North Carolina Department of Environment and Natural Resources Division of Water Quality Flow Tracking/Acceptance for Sewer Extension Permit Applications (FTSE—10/07) Project Applicant Name: City of Mebane Project Name for which flow is being requested: NA More than one FTSE-10/07 maybe required,for a single project if the owner of the WWTP is not responsible for all pump stations along the route of the proposed wastewaterflow, I. Complete this section only if you are the owner of the wastewater treatment plant. a. WWTP Facility Name: City of Mebane WWTP b. WWTP Facility Permit #: NCO021474 .AlI flows are in. MGD c. WWTP facility's permitted flow 2.50 d. Estimated obligated flow not yet tributary to the WWTP 0.717 e. WWTP facility's actual avg. flow 1.09 Total flow for this specific request N,A. g. Total actual and obligated flows to the facility 1.807 h,. Percent of permitted flow used 72.3 II. Complete this section, for each ptunp station you are responsible for along the route of this proposed wastewater flow. List pump stations located between the project connection point and the WWTP Pump Station Name Approx. Capacity, MGD Approx. Current Avg. (Firm/Design) Daily Flow, MGD III. Certification Statement: I, Dennis Hodge , certify that, to the best of my knowledge, the addition of the volume of wastewater to be permitted in this project b.as been evaluated along the route to the receiving wastewater treatment facility and that the flow from this project is not anticipated to cause any capacity related sanitary sewer overflows or overburden any downstream pump station en route to the receiving treatmern plant under normal circumstances. This analysis has been performed in accordance with local established policies and procedures using the best available data.. This certification applies to those items listed above in Sectis I and. 11 for which I am the responsible party. Signature of this form indicates acceptance of O ;s�*a�tc^ter flow. - 2-- 2 Signing OfjScia S arure Date 01/12/2012 16:54 9195636144 PAGE 01/02 106 E, Washington Street Mebane, NC 27302 919304-9215 (office) 919-563.6144 (fait) dhodgeGOP mabanexotn Fax To: Steve Mauney From: Dennis Hodge FIM 336-771.48M Page(s) to follow: 1 Phone: Date: 01 M 212012 Re: cc: 17 Urgent 13 For Review 0 Please Comment O Plows Reply ❑ Please Recycle Good Afternoon Steve, Here is Mebane's FTSE for the 4th quarter 2011. Contact the with questions. Thanks, Dennis 10/1//1011 14:11 yI'JWDib144 rr-iac uci uc State of North Carolina Department of Environment and Natural Resources Division of Water Quality Flow Tracking/Acccptance for Sewer Extension Permit Applications (FTSE --1 0/07) Project Applicant Name: _o ► '1Gi� G Project Name for which flow is bung requested: More than one !•' . &IO/O7 may be rcqu rad for n stnglc project !f the on)ner ofelie RWP it no! respoatible jor all PUMP stodwu along the route of the proposed wastewaterJloiv. I Complete this section only if you are the owner of the wastewater treatment plant a. WWTP Facility Name: —_�/°' ��V b. WW'IPFacility Permit #: /VG 00di-Y � c, WWTP facility's pcnnitted flow All flows are in MGD a , s'p d. Estimated obligated flow not yet tributary to the WWTP 0; 7_! 7 e. WWTP facility's actual avg. flow, p 5j f. Total flow for this specific request g. Total actual and obligated flows to the facility �� 7S h. Percent of permitted flow used IL Complete this section for each ptunp station you are responsible for along the route of this Proposed wastewater flow. List pump stations located between the project connection point and the WWTP Pump Station Name Approx. Capacity, MGD Approx. Current Avg, (FimOcsign) Daily Flow, MGD JII,. Ce fica.,tiion�Statement: i, �GvItk. 2 /SOt1 , certify that, to the best of m knowledge'', Y � , tbo addition of the volume of wastewater to be permitted in Otis project has been evaluated along the route to the receiving wastewater treatment facility and that the flow from this project is not anticipalcd to cause'any capacity related sanitary sewer overflows or overburden any downstream pump station en route to the receiving treatment plant under normal circumstances. This analysis has been performed in accordance with local established policies and procedures Ming the best available data. This certif;ectio» applies to those items listed above in Sections I and JJ for which I, am the responsible paiiy. Signature of Us form indicates a,"M(ancen of thykwastowater slow. Signalurc 0-t`7-11 lb/1 //"Lull 14:11 WJ!3bJb144 PAGE 01/02 106 E. Washington Street Mebane, NC 27302 910-304-9216 (offioe) 919.5W-6144 (fax) dhod"Oyo"OWnexom Fax To: Steve Mauney From: Dennis Hodge Fax 336-771 d6M page(s) to toiiow: l Phone: Date: 10-17.2011 Re: cc: O Urgent O For Review O Please Comment O Pleas Reply ❑ Please Recycle Good Morning Steve, Here is Mebane's FTSE for the 3rd quarter 2011. Contact me with questions. Thanks, Dennis 07/23/2009 08:10 9195636144 PAGE 02/02 p�- WArFR State of North Carolina AOG Department of Environment and Natural Resources 114 r Division of Water Quality o -Mc Flow Tracking/Acceptance for Sewer Extension Permit Applications (FTSE .-10/07) Project Applicant Name: Pi-ojoct Name for which flow is being requested: IVA More than one FTSE-10107 may be repuurad for a single project if the owner, of 1/te AIYTP it not responsible for all pump stations along the route of the ptvopo.sed wastewater flow I. Complete this section only if you are the owner of the Nvastcwatcr treatment plant. a. WWI? Facility Name. � t o�^�?��'&h-e. A 4-V 71 b. WWTP Facility Permit #: AIC 00,41Y All flows are in MGD C. WWTP facility's permitted flour d. Estimated obligated flow not yet t6butary to the WWTP e. WWTP facility's actual avg. flow , I o 1 f. Total flow for this specific request g. Total actual and obligated flows to the facility 1�3v h. Percent of permitted .Oow used Rot. pLf 11. Complete this section for each ptunp station you are responsible for along d)c route of this proposed wastewater flow - List pump stations located between the project connection point and the WWTP Pump Station Name Approx. Ca* paeity, MGD Approx. Current Avg. (Finn/Design) Daily Flow, MGD IIL. Cell fication Staten- t: 1, I �• S , certify that, to the best of my knowledge, the addition of the volume of wastewater to be permitted in this project has been evaluated along the route to the receiving wastewater treatment facility and that the flow from this project is not anticipated to eause'any capacity related sanitary sewer overflows or overburden any downstream pump station en rottle to the receiving treatment plant under nonnal circumstances. This analysis has been performed in accordance with local established policies and procedw.-cs using the best available data. This eertificatio» applies to those items listed above in Sections I and 11 for which I am the responsible party. Signnturc of this form indicates teeeRtanceAof th(wastcwaler.flow. al Signantre 7• Zi •O°/ U I/ 13/ zuutj bpi: lb yly5bJb144 PAGE 01/02 106 E. Washington Street Mebane, NC 27302 919-304-9215 (office) 919-563.6144 (fax) dhW9 e@tityofineba n e. com Fax To: Steve Mauney From: Dennis Hodge Fax: 336-7714630 Pages: 2 Phone: Date: Re: Quarterly FTSE CC: ❑ Urgent ❑ For Review O Please ConmmM O Please Reply O Please Recycle Good Morning Steve, Here is the 2" d quarter FTSE for Mebane. If you have questions please contact me. Thanks, Dennis MN/16/2009 08:17 9195636144 0F waT �Rp� r PAGE 02/02 State of North Carolina Departmeat of Environment and Natural Resources Division of Water Quality Flow Tracking/Acceptance for Sewer Extension Permit Applications (FTSL •-10/07) Project Applicaut Name: —(el -u o � Ll;A&I-e- -. Project Name for which flow is being requested: More than one FTS6-10/07 may be required for a single project if the owner of the I?WTP is not responsible for all pump slations along the route of the proposed wastewaterflow- I. Complete this section only if you are �the owner of the wastewater treatment plant. a_ W WTP Facility Name; b. WWTP Facility Permit #: _ 16 ar.? All flows are in MGD c. WWTP facility's permitted flow d. Estimated obligated flow not yet tributary to the WWTP e. WWTP facility's actual avg. flow _l. ! 2 2 f. Total flow for this specific request NA- g. Total actual and obligated) flows to the facility h. Percent of permitted ,flow used 9• 9 w It. Complete this section for each pump station you are responsible for along the route of this proposed wastewater flow. List pump stations located between the project connection point and the WWTP Pump Station Namc Approx. Capacity, MGD Approx. Current Avg. (Film/Design) Daily Flow, MGD IJL CeM,fication !Eatem t: "�!l%1 so , certify that, to the best of my knowledge, the addition of the volume of wastewater to be permitted in this project has been evaluated along the route to the receiving wastewater treatment facility and that the flow from this project is not anticipated to cause any capacity related sanitary sewer overflows or overburden any downshcann pump station en mute to the =--iving treatment plant under normal circumstances. ] his analysis has been performed in accordance with local established policies and procedures using the best available data. 'ibis certification applies to those items listed above in Sections I and 11 for which I am the responsible panty. Signature of this form indicates geeeAtwue,,of this,wastcwater.tlow, SigniYYgCWcia1 Signajurt' 17:12 9195636144 PAGE 02/02 State of North Carolina Department of Environment and Natural Resources Division of Water Quality Flow Tracking/Acceptance for Sewer Extension Permit Applications (FTSL t 0/07) Project Applicant Name: 19 f— -- Prolect Name for which flow is being requested: _____IV More Ilion one M. C-10/07 mety be required for a single project if the of nuer of the W IfTP is not respoxsible. for all pump stations along the route of the proposes' fvaste►vater- flow. I. Complete this section only if you arje�the owner of the wastewater treatment plant. a. W WTP Facility Name: �o!" b. WWTP Facility Perntittf: _ K Ova/q All flows are in MGD c. WWTP facility's permitted flow a •S D d. Pstimatcd obligated flow not yet tributary to the WW TP e, W WTP Facility's actual avg. flow �. o sS f. Total flow for tWs specific request A— g. Total actual and obligated flows to the facility a . ?IS-? h. Percent of permitted ,how used 90.: 3 1L Complete this section for each pump station you arc responsible for along the route of this proposed wastewater flow. List pump stations located between the project connection point and the WWTP Pump Station Name Approx. Capacity, MOD Approx. Current Avg. (Firm/Design) Daily Slow, MGD Jll. * Cert'fication Statetn t: 1, t So , certify that, to the best of my knowledge, the addition of the volume of wastewater to be permitted in this project has been evaluated along the route to the receiving Wastewatcr treatment facility and that the flow from this project is not anticipated to cause any capacity related sanitary sewer overflows or overburden any downstream pump station en route to the receiving treatment plant under nonnal circumstances. This analysis has been perfornned in accordance atith local established policies and proccdures using the best available data. This certification applies to those items listed above in Sections J and tl for which I rim the responsible party. Signature of this fonn indicates k"Vanceftof thikwatitewater.flow. 4 �'^.mom, 01-W-wA North Beverly Eaves Perdue Governor rk). NCDENR Carolina Department of Environment and Division of Water Quality Charles Wakild, P.E. Director July 10, 2012 Mr. Robert Wilson, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: NOTICE OF VIOLATION (NOV-2012-LV-0349) NPDES Permit No. NCO021474 City of Mebane WWTP Alamance County Dear Mr. Wilson: Natural Resources Dee Freeman Secretary A review of the April 2012 Discharge Monitoring Report (DMR) revealed a violation of the following parameter: Parameter Date Reported Value Permit Limit Violation Type Biochemical 4/2-5/2012 8.175 mg/I 7.5 mg/I Weekly Average Oxygen Demand Exceeded Biochemical April 2012 6.18 mg/I 5 mg/I Monthly Average Oxygen Demand Exceeded Remedial actions should be taken to correct the cause(s) of this violation. The violations described above should be abated immediately and properly resolved. Thank you for your attention to this matter. This office requires that the violations as described above be properly resolved. Unresolved violations may lead to the issuance of a Notice of Violation and/or assessments of civil penalties. If you have any questions or require any additional information, please contact Jenny Graznak at (336) 771-4960 (Ienny.graznakancdenr.gov) or myself at (336) 771-4963 (corev.basinger(Dncdenr.gov). Sincerely, W. Corey Basinger Regional Supervisor Surface Water Protection Section cc: Central Files — SWP WSRO — SWP North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-77146301 Customer Service:1-877-623-6748 Internet: www.ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer Nne orthCarolina Naturally EFFLUENT NPDES PERMIT NO. NC O021474 DISCHARGE NO:1 MONTH April YEAR 2012/ FACILITY NAME MEBANE WASTEWATER TREATMENT FACILITY CLASS 4 COUNTY A i OPERATOR IN RESPONSIBLE CHARGE (ORC) Dennis Hodge GRADE 4 PHONE 919-56 CERTIFIED LABORATORIES (1) MEBANE (2) MERITECH INC. (3) R&A LABORA CHECK BOX IF ORC HAS CHANGED O PERSONS COLLECTING SAMPLES OPERATORS Mail ORIGINAL and ONE COPY to: ATTN: Central Files NC DENR/DIV OF WATER QUALITY WATER QUALITY SECTION 1617 MAIL SERVICE CENTER RALEIGH, NC 27699 -1617 3A 141 !; -z r m (SIGNATURE40F 0 E TOR IN RESPONSIBLE CHARGE) / DA1 BY THIS SIGNATURE kCjRTIFY THAT THIS REPORT IS ACCURATE AND COMPLE 0 THE BEST OF MY KNOWLEDGE 50050 00010 00400 50060 00310 00610 00530 31616 00300 00600 00665 01034 01042 71900 D A T E Oper Arrival Time Oper Time On Site ORC On Site FLOW Temp Celsius Daily pH Daily Resd CL Daily BOD5 20 C Daily NH3 Daily TSS Daily FECAL COLI (geo mean) D.O. Daily Total Nitrogen 1/wk Total P 1/wk Total Cr NA Total Cu 2/mth Hg Eff _ Inf_X_ Daily Rate Hrs Hrs Y/N MGD C SU UG/L MG/L MG/L MG/L #/100ML MG/L MG/L MG/L UG/L UG/L UG/L 1 1.149 2 700 10.0 Y 1.039 18 7.1 <15 10.6 0.80 _ 6.6 5.3 4211 -- 2, _ 9.0 9.6 _0.35 3 700 10.0 Y 1.056 17 7.1 <15 9.3 0.16 0.30 0.00497 4 700 10.0 Y 1.057 18 7.2 <15 6.9 0.37 5.2 21 _ 9.1 3.36 0.38 <2.0 5 700 10.0 Y 1.083 19 7.2 <15 5.9 2.28F 5.1 2 9.4 1.85 6 1100 1.1 Y 1.109 7 1.047 - 8 0.981 - - 9 700 10.0 Y 0.921 15 7.3 <15 7.6 0.19 7.5 10 10.0 0.37 10 700 10.0 Y 1.124 16 7.2 <15 6.6 0.67 4.2 < 2 9.8 0.41 11 700 10.0 Y 1.054 15 7.2 <15 6.8 1.96 4.0 < 2 9.4 6.07 0.44 < 5.0 <2.0 12 700 10.0 Y 1.029 14 7.2 <15 5.2 0.24 4.1 200 9.7 0.33 0.00647 13 700 10.0 B 1.035 15 7.2 <15 5.5 < .1 3.7 113 9.7 0.40 14 1.034 15 YS l • Y 1.033 16 700 10.0 B 0.925 18 7.3 42 9.2 2.17 8.1 < 2 9.4 1.93 17 700 10.0 B 1.130 19 7.2 41 5.6 3.78 7.1 < 2 8.9 2.15 16 700 10.0 B 1.009 19 7.2 <15 8.9 2.87 8.5 2 8.6 6.03 1.72 <2.0 19 700 10.0 Y 1.068 17 7.2 <15 6.0 0.89 5.6 340 9.1 _ 2.19 20 700 10.0 Y 1.090 17 7.2 <15 4.2 0.25 4.0 < 2 8.9 2.45 0,00247 21 1.143 22 1.084 - -- - 23 700 10.0 Y 1.318 16 7.0 <15 4.6 1.10 6.0 2 8.6 1.18 0.00279 24 25 700 700 10.0 10.0 Y Y 1.226 1.047 14.20 15 7.0 6.9 <15 <15 4.9 3.0 0.36 0.77 3.8 4.2, 3.5 144 < 21 8 9.6 9.0 8.7 0.45 6.94 0.53 26 700 10.0 Y 1.083 16 7.0 <15 3.7 0.17 0.52 27 700 10.0 Y 1.220 18 7.0 <15 4.0 0.26 4.0 2 8.2 0.29 28 1.029 29 1.021 30 700 10.0 Y 1.093 19 7.1 <15 5.0 0.67 5.9 2 8.5 1.00 31 AVERAGE 1.075 17 4 6.2 0.997 5.31 6 9.2 5.60 0.96 < 5.0 <2.0 0.00418 MAXIMUM 1.318 19 7.3 42 10.6 3.78 8.45 340 10.0 6.94 2.45 < 5.0 <2.0 0.00647 MINIMUM 0.921 14 6.9 <15 3.0 <.1 3.5 2 8.2 3.36 0.29 <5.0 <2.0 0.00247 TOTAL FLOW 32.237 Grab Grab Grab Comp Comp Comp Grab Grab Comp Comp Comp Comp Grab Monthly Limit Apr -Oct 2.5 6-9 17 5 2 30 200 >6.0 0.012 Monthly Limit Nov- Mar 1 10 1 4 DEM Form MR-1 (9/00) Cover Sheet from Staff Member to Regional Supervisor n DMR Review Record Facility: ��eb� wLUfF Perrnit/Pipe No.: NC00 a ( -iMonth/Year 6onthlAverage Violations Parameter Permit Limit DMR Value % Over Limit 0eek]/Daily Violations Date Parameter Permit Limit/Tvpe DMR Value % Over Limit � a-5 ^7 5 � I L 8 1-7 5 � Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Violations Completed by: JeVIVAsi LZi,�r C_ Regional Water Quality Supervisor Signoff: o Date:L"-:--' Date: / d ZO c Z---., WSRO MONTHLY DMR VIOLATIONS REPORT FOR: Almmnnrn NCO021474 Mebane WWTP Limit Violation Average BOD, 5-Day (20 Deg. C) - Milligrams Exceeded 2012 4 001 Concentration 04-30-2012 5 X week per Liter 5 6.18 23.5 Weekly Average BOD, 5-Day (20 Deg C) - Milligrams Exceeded 2012 4 001 Concentration 04-07-2012 5 X week per Liter 7.5 8.17 8.999999 PV A f NCDENR North Carolina Department of Environment and Natural Division of Water Quality Beverly Eaves Perdue Charles Wakild, P.E. Governor Director August 23, 2012 Mr. Robert Wilson, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: NOTICE OF VIOLATION (NOV-2012-LV-0435) NPDES Permit No. NCO021474 City of Mebane WWTP Alamance County Dear Mr. Wilson: Resources Dee Freeman Secretary A review of the May 2012 Discharge Monitoring Report (DMR) revealed a violation of the following parameter: Parameter Date Reported Value Permit Limit Violation Type Biochemical April 30-May 4 8.1 mg/I 7.5 mg/I Weekly Average Oxygen Demand Exceeded Biochemical May 7-May11 8.94 mg/I 7.5 mg/I Weekly Average Oxygen Demand Exceeded Biochemical May 14-May 18 9.76 mg/I 7.5 mg/I Weekly Average Oxygen Demand Exceeded Biochemical May 2012 7.8 mg/I 5 mg/I Monthly Average I Oxygen Demand Exceeded Remedial actions should be taken to correct the cause(s) of this violation. The violations described above should be abated immediately and properly resolved. Thank you for your attention to this matter. This office requires that the violations as described above be properly resolved. Unresolved violations may lead to the issuance of a Notice of Violation and/or assessments of civil penalties. If you have any questions or require any additional information, please contact Jenny Graznak at (336) 771-4960 or myself at (336) 771-4963 (corey.basinger .ncdenr.gov). Sincerely, W. Corey Basinger Regional Supervisor Surface Water Protection Section cc: Central Files — SWP WSRO — SWP North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: www.ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer NorthCarofina Naturally RECEIVED N.C. Dept. of ENR EFFLUENT NPDES PEF MIT NO. W mvton .4aiukilC 002147 4 DISCHARGE NO:1 MONTH May YEAR 2012 FACILITYNAME_._.. a ASTEW, TERTREATMENTFACILITY CLASS 4COUNTY ALAMANCE OPERATOR IN RESPONSIBLE CHARGE (ORC) Dennis Hodge GRADE 4 PHONE 919-563-6141 CERTIFIED LABORATORIES (1) MEBANE (2) MERITECH INC. (3) R&A LABORATORY, Inc. CHECK BOX IF ORC HAS CHANGED () PV'§bNS COLLECTING SAMPLES OPERATORS , { Mail ORIGINAL and ONE COPY to: ATTN: Central Files NC DENR/DIV OF WATER QUALITY WATER QUALITY SECTION 1617 MAIL SERVICE CENTER RALEIGH, NC 27699 -1617 (SIGNA1 BYTHIS SIG AND OPEATOR IN RESPONSIBLE CHARGE) DATE LE I CERTIFY THAT THIS REPORT IS ACCURATE -ETE TO THE BEST OF MY KNOWLEDGE 50050 00010 00400 50060 00310 00610 00530 31616 00300 00600 00665 01034 01042 71900 D A T E Oper Arrival Time Oper Time On Site ORC On Site FLOW Temp Celsius Daily pH Daily Resd CL Daily BOD5 20 C Daily NH3 Daily TSS Daily FECAL COLI (geo mean) D.O. Daily Total Nitrogen 1Mrk Total P 1Avvk Total Cr NA Total Cu 2/mth Hg Eff _ InL X_ Daily Rate Hrs Hrs Y/N MGD C SU UG/L MG/L MG/L MG/L #/100ML MG/L MG/L MG/L UG/L UG/L UG/L 1 700 10.0 Y 1.025 20 7.0 <15 10.6 0.41 8.2 75 8.2 1.20 2 700 10.0 Y 1.199 21 7.0 <15 10.7 0.29 8.5j 204 8.4j 8.96 1.20 <2.0 3 700 10.0 Y 1.015 21 7.1 <15 7.1 0.65 6.6 9 8.0 1.62 0.00379 4 700 10.0 Y 1.083 21 7.0 <15 7.1 1.25 8.2 2 7.7 1.13 5 2030 1.0 Y 1.019 6 1.583 7 700 10.0 Y 1.226 20 6.8 <15 15.0 0.74 16.1 79 8.2 0.63 8 700 10.0 Y 1.095 20 6.9 <15 5.6 0.16 5.1 15 8.4 0.25 9 700 10.0 Y 1.120 21 7.0 <15 7.2 1.37 7.3 172 8.3 6.89 0.36 10 700 10.0 Y 1.304 19 6.8 <15 11.9 2.31 8.1 35 we 0.35 0.00135 11 700 10.0 Y 1.054 18 6.8 <15 5.0 0.22 4.7 4 9.0 0.19 12 0.968 13 1.095 14 700 10.0 Y 1.000 19 6.9 <15 7.6 1.19 6.7 28 8.5 0.38 15 700 10.0 Y 1.748 20 6.6 <15 20.9 2.01 19.0 90 8.8 0.67 16 700 10.0 Y 1.286 21 6.7 <15 12.1 0.32 7.4 64 8.7 7.84 0.26 <2.0 17 700 10.0 Yj 1.062 21 6.8 <15 4.5 0.25 5.2 5 8.4 0.28 0.00280 18 700 10.0 Y 1.109 21 6.9 <15 3.7 0.23 5.9 4 9.0 0.30 19 1.210 20 0.039 21 700 10.0 Y 0.953 19.90 7.2 <15 8.5 0.50 8.8 71 8.8 1.14 22 700.00 10.0 Y 1.104 21 6.9 <15 9.5 0.65 7.3 B8 8.5 1.78 23 700 10.0 Y 1.429 21 7.0 <15 6.3 1.78 6.7 7 8.5 10.48 1.76 24 10.0 B 1.193 20.90 7.0 <15 5.4 0.77 6.2 43 8.4 1.89 0.00172 25 640 10.6 Y 1.107 22 7,0j <15 4.9 1.03 5.0 2 8.6 2.25 26 1.051 27 0.974 28 1 0.928 1710v 29 700 10.0 Y 1.012. 23 7.0 <15 3.3 1.76 3.3 1 8.1 2.60 30 700 10.0 Y 1.116 23 6.9 <15 2.4 0.74 3.5 3 8.0 11.38 3.03 <2.0 31 700 10.0 B 1.113 22 7.0 <15 3.0 0.36 <2.5 59 8.1 3.35 AVERAGE 1.130 21 0 7.8 0.863 7.26 17 8.4 9.11 1.21 <2.0 0.00242 MAXIMUM 1.748 23 7.2 <15 20.9 2.31 19.00 204 9.0 11.38 3.35 <2.0 0.00379 MINIMUM 0.839 18 6.6 <15 2.4 0.16 <2.5 1 7.7 6.89 1 0.19 <2.0 0.00135 TOTAL FLOW 35.020 Grab Grab Grab Comp Comp Comp Grab Grab Comp Comp Comp Comp Grab Monthly Limit Apr- Oct 2.5 6-9 17 5 2 30 200 > 6.0 0.012 Monthly Limit Nov- Mar 1 10 4 DEM Form MR-1 (9/UU) IPV DMR Review Record Cover Sheet from Staff Member to Regional Supervisor Facility: MC'J� 001-P Permit/Pipe No.: WWo-( % MonthNear �Z Z0( Monthly Average Violations Parameter Pemiit Limit DMR Value % Over Limit Weekl /Daily Violations Date Parameter Permit Limit/Type DMR Value % Over Limit Monitoring Frequency Violations Date Parameter Permit Freauencv Values Reported # of Violations Oth Violations a ao(a — N& ui o (a3i©-yl r 12-0(2 — KyOV viol n 09-C 46AW 2-v Completed by: J . Regional Water Quality Supervisor SiQnoff: 61V-4 OVA Date: 16 ( Date: J Z Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com) Sent: Friday, May 25, 2012 10:54 AM To: Graznak, Jenny Cc: Basinger, Corey Subject: Mebane WWTP Good Morning Jenny, I just wanted to follow-up our recent telephone conversations. As we've discussed, Mebane had to take one of our clarifiers off line for scheduled maintenance on April 30, 2012. This is our larger clarifier that receives 50% of our plant flow. In order to minimize as much as possible total suspended solids(TSS) from exiting the clarifiers we started adding poly aluminum chloride and polymer to aid in settling. But, because of the usual average daily flows of 1.1 MG and the design of the clarifiers being 1.2 MGD the chemical addition didn't remove as much of the TSS as we would have liked. To further complicate matters we had a rain event on May 5th that exceeded 2.2 inches in less than an hour with a maximum flow of 5.0 MG and a rain event May 14 and 15 of 1.4 inches with a maximum plant flow of 4.0 MG. Typically, our plant can handle these flows with minimum problems but because of the clarifier being off-line we were unable to handle it as well. The clarifier was put back into service on May 17th but because of the additional flow through the two clarifiers our sand filters were overloaded with solids that we are still in the process of removing. Neither of these events caused us to exceed our TSS limitation but we have exceeded our BOD weekly maximum limitation for three weeks (8.11 mg/L, 8.93 mg/L, and 9.75 mg/L, respectively). While cleaning the filters we have had to bypass them off and on since Monday, May 21st. We hope to have them back fully on-line today. If you have any questions please do not hesitate to contact me. Thanks and have a great weekend. Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile Graznak, Jenny From: Dennis Hodge [dhodge@cityofinebane.com] Sent: Thursday, May 10, 2012 7:51 AM To: Basinger, Corey Cc: Graznak, Jenny Subject: FW: Mebane Wastewater Facility Good Morning Corey, In the previous email I failed to include that we have been adding poly aluminum chloride and polymer during the absence of our third clarifier. This is an aid to minimize the total suspended solids leaving the clarifier which is typically the cause, in our case, for the elevated BOD. Thanks again for your understanding. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile From: Dennis Hodge [maiIto: dhodge@cityofinebane.com] Sent: Wednesday, May 09, 2012 5:25 PM To: 'corey.basinger@ncdenr.gov' Cc: rwilson@cityofinebane.com; Tony Bowes (tbowes@cityofinebane.com); Amy Varinoski (avarinoski@cityofinebane.com) Subject: Mebane Wastewater Facility Good Afternoon Corey, I trust you're doing well. I wanted to follow-up my telephone message from this morning. As we discussed last month, the Mebane wastewater facility has been involved in different operating schemes for our plant waste stream. This was, in part, driven by low dissolved oxygen (D.O.) levels in our aeration basin in the during the warmer months in the past several years. During these periods, even though the D.O. levels were below the prescribed industry standard of 1.0 to 2.0 mg/L the plant was able to nitrify to well below our permit limit (2.0 mg/Q. We also noticed that, at times, our nitrate levels were lower than expected as well as an increase in our alkalinity due to unintended denitrification. As we were operating in this manner we started researching the different denitrification processes and discovered simultaneous nitrification-denitrification was occurring in our plant. Further research led us to the discovery of the anammox (anaerobic ammonium oxidation) process. I won't go into all of the details of either process but both are driven by lower D.O levels. In a conventional Biological Nutrient Removal (BNR) process several various strains of bacteria are used to convert nitrogen compounds from the wastewater into nitrogen gas, some of which require quite a bit of oxygen as well as the addition of carbon. In the anammox process nitrogen compounds are converted directly into nitrogen gas without the need to supply as much oxygen and no addition of carbon. As Mebane is affected by the Jordan Lake rules and will have a Total Nitrogen effective in 2016 we are looking at different methods for nitrogen removal. At this time this method looks promising. So, the point of this information is to say, that while implementing some of the necessary changes Mebane may have occasional effluent permit limitation exceedances. While we don't expect huge exceedances there may be some. For instance, in April, during the first week, our BOD weekly average was exceeded. The average was 8.16 mg/L with the limitation being 7.5 mg/L. Also, the monthly average was exceeded. The average was 6.17 mg/L with the limitation being 5.0 mg/L. As we got into the last week the BOD average was back down to 4.03 mg/L. We will be installing D.O. probes and control equipment to enhance our process in the next two months. We are installing mixers this week to ensure adequate mixing while we cycle our aerators on and off. In addition, last week one of our three clarifiers had to be taken off line for contracted repairs. The drive train had been leaking oil and needed to be rebuilt. The contractor removed the drive and took it off site for the rebuild. The drive should be reinstalled the latter part of next week. As this is the larger of our three clarifiers there is the potential for BOD exceedances due to it being off line. Thanks Corey for your understanding and willingness to work with the City. Have a great day and please respond so that I'll know you received this. Thanks, Dennis Dennis J. Hodge Wastewater Director, City of Mebane 919-304-9215 office 336-906-5583 mobile ppppppp City of Meban a Wastewater Treatment► Facility > 31 x 106 F. Washington Street ..� :��,�. Mebane, NC 27302 - ch—t... d in 1 Ks I August 29, 2011 N.C.Dept. of ENR FEB 2 8 2012 NC DENR/DWQ Winston-Salem Water Quality Section Re ional Office 1617 Mail Service Center Raleigh, NC 27699-1617 Attn: System Performance Annual Report Dear Sir/Madam: Please find enclosed three (3) copies of the City of Mebane's 2010-2011 Annual Wastewater Treatment and Collection System Report. A public notice has been sent to the local newspaper to be posted directing the public to the location of the annual report. The report has been made available to the public at City Hall, Public Works Department, and at the Wastewater Treatment plant. The report is also available on the City's website hgp://www.cityofinebane.com/. If you have any questions please contact me at 919-304-9215 or at the email address listed. Dennis J�odge Wastewat Director City of Mebane 919-304-9215 dhodge(@cityofinebane.com �L5 V AUG 30 2011 I sr� ppr",pppp- Chartered its t %s 1 ID ":::R7 -OW AUG 3 0 2011 City of Mebane Wastewater Collection and Treatment Facility For the Fiscal Year July 7, 2010 -June 30, 2011 ppppppp- Of Me' j Chartered in last City of Mebane Wastewater Collection and Treatment Facility For the Fiscal Year July 1, 2010 — June 30, 2011 Introduction This report is produced in compliance with House Bill 1160 passed by the General Assembly of the State of North Carolina requiring that all entities that own or operate wastewater collection and treatment systems make an Annual Report available to their customers. This report must include information regarding how well the system operated, what violations occurred, and other pertinent information. This report complies with these requirements. The City of Mebane operates a wastewater treatment facility and a sewage collection system that collects and transports the sewage to the facility. Following are the professionals designated by the state as the "Operator in Responsible Charge" (ORC) of the respective systems and permits for the systems: City of Mebane Wastewater Treatment Facility 635 Corregidor Road Phone (919) 563-6141 NPDES Permit No. - NCO021474 Land Application of Residual Solids (503) Permit No. - WQ0004033 Operator in Responsible Charge (ORC) — Dennis J. Hodge Mebane Public Works Sewage Collection System 636 Corregidor Road Phone (919) 563-3401 Collection System Permit No. WQC500081 Operator in Responsible Charge (ORC) — James Jobe We certify under penalty of law that this report is complete and accurate to the best of our knowledge. Copies will be available at the Wastewater Treatment plant, Public Works Building, City Hall, and on the City of Mebane website, www.citvofinebane.com/. ppppppp, City of Mebane Annual Report - Page 2 System Overview Every day an average of one million gallons of sewage is generated in our homes and industries that must be collected, transported, and treated to very stringent standards before it is released back into our environment through our waterways. This service is provided by the city and is funded almost entirely from the user charges that are paid monthly by our customers The sewage collection and wastewater treatment facility of the City of Mebane begins with over 3000 connections that serve homes, commercial establishments, and industries. Nearly all of the sewage or wastewater that is generated by customers flows by gravity through sewers that range from-6-to 16 inches -in --- diameter. Mebane operates over 76 miles of these gravity sewer lines. During this reporting period, over 11.75 miles of these lines were cleaned and inspected. As the lines leave neighborhoods they increase in size to accommodate the flows that are collected from the many areas that are served. These sewers generally follow terrain to take advantage of gravity flow but at certain points pumping stations are used to transfer the flow to different basins. The city currently operates 15 pumping stations that range in capacity from 13 to 2000 gallons per minute. The purpose of the collection system is to transport the wastewater to the wastewater treatment facility so it can be processed and returned to our waterways with minimal environmental impact. The wastewater treatment facility is permitted to process up to 2.5 million gallons of wastewater per day. The wastewater treatment facility is complex, using physical, chemical, and biological processes to treat the wastewater. The wastewater is screened to remove large suspended materials, but the heart of the plant is a biological process that uses bacterial cultures to remove most of the suspended and dissolved wastes that are produced within the city. This biological process using activated sludge is sensitive to temperature, high flows produced by rainfall leaking into sewers, and toxic discharges that can be produced by industries or even homes. This sensitivity makes the wastewater facility susceptible to process upsets that can result in exceeding limitations permitted by regulating authorities. The permitting of treated wastewater discharges is based on a "7 Q 10" stream flow, or the lowest seven day stream flow expected every ten years. However permit limits that are issued to protect the stream at low flow (less dilution), apply 24 hours per day and 365 days per year. Since Mebane's limits are calculated for discharging to a small stream, our limitations are extremely stringent. North Carolina has some of the most strict stream standards in the country. Mebane WWTP discharge constitutes over 90% of the stream only at the lowest stream -flows. However, when periods of rain create high stream flows and make treatment plant operations difficult, the treatment facility must continue to be compliant with dry weather limitations. The City of Mebane's treatment plant operates under a NPDES permit, or National Pollutant Discharge Elimination System permit. The NPDES permit includes monitoring requirements and discharge limitations, some of which vary with seasons and have different maximums for daily values, weekly averages, monthly averages, and quarterly averages. Some limitations protect streams from oxygen depletion, such as biochemical oxygen demand (BOD) and ammonia -nitrogen (which exerts oxygen demand over a delayed yet prolonged basis). Some limitations are to protect aquatic life in the receiving stream, such as metals like cadmium or mercury or other pollutants like fluoride or chlorine. Since aquatic life is more sensitive than humans to some pollutants, some limitations are as low as 12 parts per trillion* and in many cases are lower than drinking water standards. * To help comprehend how small one part per trillion is: One part per trillion corresponds to one minute in 2,000,000 years, or a single penny in $10,000,000,000. PPPPPPP- City of Mebane Annual Report — Page 3 Compliance with the permit requires that our laboratory must conduct over 4,000 tests per year all of which must meet the NPDES permit requirements. To accidentally drop a sample or not analyze it within a specified period can result in a violation. There are some pollutants such as fluoride, mercury, and cadmium that the operators of the wastewater treatment facility have no control over and can only be regulated through controlling the discharges of industry and households. During the 2010-2011 fiscal year the Water Resources Department treated over 378 million gallons and -- _retumed it_to our_streams' We are prou&of the outstandinc-performance-ef the=faces-that-was reads gossib4= _ by the dedicated efforts of the professionals who operate, maintain, and conduct tests for the facility. During this period the wastewater treatment facility experienced no violations of the NPDES permit during this reporting period. This was reported to the State of North Carolina in compliance with reporting regulations and is summarized in Table 1. Wastewater flow amounts are summarized in Table 2. Table 1: Wastewater Treatment Facility Date Parameter Number of Violations Violation Type July 2010-June 20111 None Table 2: Wastewater Flows Summary of Wastewater Flows MG (Million Gallons) Jul 1, 2010 — June 30, 2011 Average MG per day Total MG July 0.991 30.719 August 1.020 31.630 September 0.980 29.388 October 0.918 28.445 November 0.941 28.225 December 1.042 32.289 January 1.032 32.002 February 1.008 28.211 March 1.229 38.112 April 1.190 35.711 May 1.077 33.374 June 1.008 30.247 Total Year MG 378.353 Average Da MG 1.036 ppr7ppp- City of Mebane Annual report — Page 4 Collection System Performance The City of Mebane operates a sewage collection system comprised of 76 miles of gravity line, over 700 manholes, 15 pump stations, and over 12 miles of pressurized sewage force main. If sewage escapes from the collection system for whatever reason and reaches a surface water body in an amount exceeding 1,000 gallons, it must be reported to the news media. In addition, all spills of any volume reaching a water body must be reported to the State. -- - o ec ion sys em ssewage spills can occur�or many reasons Tree _roots can _enter _the sewer lines obstructing_ _ well as foreign objects that canes_ d[ooned into manholes or eewere-+�arnwa�-c��� � W��o���� -- -- overloadino -stations.Hump stations can failor mechanical or electrical reasons. Mebane, like most cities, has experienced heavy rains causing incidents of discharge of wastewater from our collection system. A list of sewage spills is included in Table 3. There were no observed environmental impacts from any of these incidents. Table 3: Collection System Sewage Spills Date Location Approximate Gallons Probable Cause 09/03/2010 Briarwood Drive 300 Household Grease 12/02/2010 General Electric PS 600 Force main break PS — Pumping Station Summary The City of Mebane is proud given that the age of our treatment facility and collection system our permit violations have been minimal. Circumstances, such as weather and vandalism, are beyond the control of collection system and wastewater treatment facility staff. Therefore, despite the dedicated efforts of these individuals, it can often be difficult to avoid spills and violations of the NPDES permit. The City's ultimate goal is to have no permit violations or sewage spills. We want to provide the best possible service to our customers while being fiscally responsible as well as being good stewards of our environment. If more information is desired please contact our staff at 919-304-9215. ppppppp- City of Mebane Wastewater Collection and Treatment Facility For the Fiscal Year July 1, 2010 — June 30, 2011 City of Mebane Wastewater Treatment Facility Corregidor Road, Mebane, NC Phone (919) 563-6141 NPDES Permit No. NC0021474 Residuals Application Permit No. WQ0004033 Operator in Responsible Charge (ORC) — Dennis Hodge Mebane Wastewater Collection System 635 636 Corregidor Road Phone (919) 563-3401 Collection System Permit No. WQC500081 Operator in Responsible Charge (ORC) — James Jobe I, certify, under penalty of law, that this report is complete and accurate to the best of my knowledge. I further certify that this report has been made available to the users or customers of the named systems and that those users have been notified of its availability. Date Wastewater Director City of Mebane Water Pollution Control System Operator Designation Form WPCSOCC NCAC 15A 8G .0201 Permittee Owner/Officer Name: Nt4 MailinM��e, gAddressk1I d/� I City: State: R, Zip:2,71ol Email address: lr IiV G lS Phone #: (A (-1) 57o 3 40 1 `-F Facility Name: 6, D �/ p Permit #: 14 G 0,-2 / q 7 L/ ! SUBMIT A SEPARATE FORM FOR EACH TYPE OF SYSTEM! Facility Type & Grade: Grade Biological WWTP _Tz� Physical/Chemical Collection System Operator in Responsible Charge (ORC) Print Full Name: Grade Surface Irrigation N/A Land Application N/A Certificate Type / Grad Number: 810 . Ww " �7S `T Work Phone #: A Iq ) 30� - q off. /.5 Signature:C Date: (o/ /Li ! / "I certify that I agree to my de\iignation as the Operator in Responsible Charge for the facility noted. l understand and will abide by the rules and regulations pertaining to the responsibilities of the ORC as set forth in 15A NCAC 08G .0204 and failing to do so can result in Disciplinary Actions by the Water Pollution Control System Operators Certification Commission." Back -Up Operator in Responsible Charge (BU ORC) Print Full Name: V Certificate qlagree a /Grade /Number` b - ' Work Phone #: ��)021 Signature: � V Date: / "I certify that my designation as a Back-up Operator in Responsible Charge for the facility noted. I understand and will abide by the rules and regulations pertaining to the responsibilities of the BU ORC as set forth in 15A NCAC 08G .0205 and failing to do so can result in Disciplinary Actions by the Water Pollution Control System Operators Certification Commission." ................................................................................................................................................... Mail or Fax to: WPCSOCC 1618 Mail Service Center Raleigh, NC 27699-1618 Fax: 919/733-1338 (See next page for designation of additional back-up operators. Designation of more than one back-up operator is optional.) Revised 1-2010 ,ditional Back-up ORC designations Facility Name: ( � �jt/ / Permit #: Aa POAI V 7� 7' Back -Up Operator in Responsible Charge(BUORC) / Print Full Name: An 0 k-) V _J V- 0 Y11 Certificate Signature: owe, S �i g q'13 E'g l Work Phone #: 19/9 ) 3,o g ',9 2 169 Date: 4 — ILI — // "I certify thIA agrVningg-3to designation as a Back-up for in Responsible Charge for the facility noted. I understand and will abide by the rules and regulations pe the responsibilities of the BU ORC asset forth in 15A NCAC 08G .0205 and failing to do so can result in Disciplinary Actions by the Water Pollution Control System Operators Certification Commission." .................................................................................................................................................. Back -Up Operator in Responsible Charge (BU ORC) Print Full Name: Certificate Type / Grade / Number: Signature: Work Phone #: Date: "I certify that I agree to my designation as a Back-up Operator in Responsible Charge for the facility noted. I understand and will abide by the rules and regulations pertaining to the responsibilities of the BU ORC as set forth in 15A NCAC 08G .0205 and failing to do so can result in Disciplinary Actions by the Water Pollution Control System Operators Certification Commission." ................................................................................................................................................ Back -Up Operator in Responsible Charge (BU ORC) Print Full Name: Certificate Type / Grade / Number: Signature: Work Phone #: Date: "I certify that I agree to my designation as a Back-up Operator in Responsible Charge for the facility noted. I understand and will abide by the rules and regulations pertaining to the responsibilities of the BU ORC as set forth in 15A NCAC 0813 .0205 and failing to do so can result in Disciplinary Actions by the Water Pollution Control System Operators Certification Commission." ................................................................................................................................................. Back -Up Operator in Responsible Charge (BU ORC) Print Full Name: Certificate Type / Grade / Number: Signature: Work Phone #: Date: "1 certify that I agree to my designation as a Back-up Operator in Responsible Charge for the facility noted. I understand and will abide by the rules and regulations pertaining to the responsibilities of the BU ORC as set forth in 15A NCAC 08G .0205 and failing to do so can result in Disciplinary Actions by the Water Pollution Control System Operators Certification Commission." ..................................................................................................................................................... Revised 1-2010 RECEIVED N.C. Deot of ENR •� �— MAY 2 4 201, WDENR Winston-Salem North Carolina Department of Environment and Natural Resources Regional Office Beverly Eaves Perdue Governor Mr. Dennis Hodge Wastewater Director, City of Mebane 106 E. Washington St. Mebane, North Carolina 27302 Dear Mr. Hodge: Division of Water Quality Coleen H. Sullins Dee Freeman Director Secretary May 10, 2011 Subject: Speculative Limits for Mebane WWTP Mebane, North Carolina NCO021474 Alamance County Cape Fear River Basin Class IV Facility This letter provides speculative effluent limits for a flow increase of 0.49 MGD to the existing Mebane Wastewater Treatment Plant which has a permitted flow of 2.5 MGD for a future expanded flow of 2.99 MGD. The Division received the speculative limits request in a letter dated April 18, 2011 from Hazen and Sawyer. Please recognize that speculative limits may change based on future water quality initiatives, and it is highly recommended that the applicant verify the speculative limits with the Division's NPDES Unit prior to any engineering design work. The applicant will also need to justify a flow expansion of 0.49 MGD over its' planning period, as part of the Engineering Alternatives Analysis. Receiving Stream. This facility discharges to MoAdams Creek, a class C-NSW waterbody in the Cape Fear River Basin. Waters with this classification have a best usage for aquatic life propagation and maintenance of biological integrity, wildlife, secondary recreation and agriculture. This receiving water has a zero 7Q10 (summer and winter) and a 30Q2 flow of 0.075 cfs. MoAdams Creek is not listed as an impaired waterbody on the 2010 303(d) impaired Waters List. There are no specific permitting strategies for MoAdams Creek in the Cape Fear River Basinwide Water Quality Plan. MoAdams Creek drains into Back Creek, then to Haw River and Jordan Lake, and ultimately drains into the Cape Fear River A review of upstream/ downstream data for the Mebane POTW discharge to MoAdams Creek for 2008 through 2010 indicates that D.O. values downstream of the discharge are almost always higher than upstream D.O., indicating a positive impact on the stream. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St, Raleigh, North Carolina 27604 One Phone: 919-807-63001 FAX: 919-807-64951 Customer Service: 1-877-623-6748 NofthCarolina Internet: www.ncwaterquality.org �aturallr� An Equal Opportunity 1 Affirmative Action Employer Speculative Effluent Limits. Based on Division review of receiving stream conditions, speculative effluent limits for the proposed expansion to 2.99 MUD are presented 1n Table I. These speculative limits were developed 1n accordance with the North Carolina Administrative Code, the Cape Fear Basinwide plan, and the Jordan Reservoir Wastewater Discharge Requirements for nutrients. A complete evaluation of these limits and monitoring requirements for metals and other toxicants, as well as potential instream monitoring requirements will be addressed upon receipt of a formal NPDES permit application. Some features of the speculative limit development include the following: • Nutrient Limits. Since the creek is in the Jordan Lake Watershed, the Mebane WWTP is subject to the Jordan Reservoir Wastewater Discharge Requirements for nutrients. An allocation of 40,225 pounds of Total Nitrogen discharged per year, and 5,056 pounds of Total Phosphorus discharged per year have been established. These are fixed allocations and do not increase for increased discharge. They represent concentrations of 4.4 mg/ L of TN and 0.6 mg/ L of TP at 2.99 MGD. • BOD Limits. BOD limits of 5.0 mg/ L are retained from the February 2, 2006 Speculative Effluent Limits letter as representing Best Available Technology. • NH3 Limits. Ammonia limits of 1.0 mg/ L Monthly Average (Summer) and 1.8 mg/ L Monthly Average (Winter) are retained from the February 2, 2006 Speculative Effluent Limits letter as representing Best Available Technology. • Total Residual Chlorine (TRC). In order to protect MoAdams Creek from chlorine toxicity, the existing TRC limit of 17 µg/ L has been retained. Table 1. Speculative Effluent Limits for Mebane WWTP NCO021474 (Proposed Expansion to 2.99 MGD) z; `F,, r rrr >G> . y� nT a�rONs Mnthly fiiy Daily Ave��ge� ��iverage Maumum . � Flow 2.99 MGD BOD, 5-day, 20°C (Summer) 5.0 mg/L 7.5 mg/L BOD, 5-day, 20°C (Winter) 10.0 mg/L 15.0 mg/L Total Suspended Solids 30.0 mg/L 45.0 mg/L NH3 as N (Summer) 1.0 mg/L 3.0 mg/L NH3 as N (Winter) 1.8 mg/L 5.4 mg/L Fecal Coliform 200/100mL 400/100mL (geometric mean) The daily effluent dissolved oxygen Dissolved Oxygen concentration shall not be less than 6.0 mg/L. pH ?6.0 S.U. / 59.0 S.U. Total Residual Chlorine 1 1 17 µg/L Total Nitrogen Allocation of 40,225 pounds per year Total Phosphorus Allocation of 5,056 pounds per year Quarterly Chronic Toxicity (Ceriodaphnia) at 90% Footnotes: (Summer): April 1- October 31 (Winter): November 1 - March 31 Page 2 En ing eering Alternatives Analysis (EAA). Please note that the Division cannot guarantee that an NPDES permit will be issued with these speculative limits. Final decisions can only be made after the Division receives and evaluates a formal permit application for the proposed discharge. In accordance with the North Carolina General Statutes, the practicable wastewater treatment and disposal alternative with the least adverse impact on the environment is required to be implemented. Therefore, as a component of all NPDES permit applications for new or expanding flow, a detailed engineering alternatives analysis (EAA) must be prepared. The EAA must thoroughly justify requested flows, and provide an analysis of potential wastewater treatment alternatives. A copy of Division guidance for preparing EAA documents is attached State Environmental Policy Act (SEPA) EA/ EIS Requirements. A SEPA EA/ EIS document must be prepared for all projects that 1) need a permit; 2) use public money or affect public lands; and 3) might have a potential to significantly impact the environment. For existing discharges, significant impact is defined as an expansion of > 500,000 gpd additional flow. Since your proposed facility expansion is for < 500,000 gpd flow, you do not have to prepare a SEPA document that evaluates the potential for impacting the quality of the environment. If you have any additional questions about these limits or NPDES permitting requirements, feel free to contact Jim McKay at (919) 807-6404. Sincerely, t� om Belnick Supervisor, Complex NPDES Permitting Unit Attachment: EAA Guidance Document cc: (without attachment) • US Fish and Wildlife Service/ Ecological Services, PO Box 33726, Raleigh, NC 27636-3726 Attn: Sara Myers • NCWRC, Inland Fisheries, 1721 Mail Service Center, Raleigh, NC, 27699-1721 Attn: Fred Harris • Winston-Salem Regional Office/Surface Water Protection Section • Central Files • NPDES Permit Files/ NCO021474 • Kathy Stecker/ Modeling TMDL Unit— Via email • Hannah Stallings — Via email • Jennie Atkins, Ph.D. — Via email • Hazen and Sawyer P.C./ 401 WestChase Blvd. Suite 5001 Raleigh, NC 27607/ Attn: Mr. Ronald L. Taylor, P.E. Page 3 Ak• • RECEIVED A N.C. Dept. of EN- NCDENR JUN 2 2 2011 North Carolina Department of Environment and Natural Resources Winston-Sai( Division of Water Quality Regional °` Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary June 16, 2011 138 Ms. Amy Varinoski Mebane WWTP Laboratory 106 E. Washington Street Mebane, NC 27302 Dear Ms. Varinoski: Your letter received on May 25, 2011, by electronic mail concerning corrective actions for your analytical procedures has been reviewed. The quality control measures, taken in reference to the findings cited in the April 28, 2011 inspection report are acceptable. Please continue to follow all approved methods, rules and regulations. Thank you again for your cooperation during the inspection. Contact us at (919) 733 — 3908 Ext.249 if you have any questions or need additional informati regarding our requirements. Sinc reeJ� ,� � Adams / Section Cc: Gary Francies Winston Salem Regional Office DENR DWQ Laboratory Section NC Wastewater/Groundwater Laboratory Certification Branch 1623 Mail Service Center, Raleigh, North Carolina 27699-1623 Location: 4405 Reedy Creek Road. Ralegh, North Carolina 27607-6445 Phone: 919-733-3908 \ FAX: 919-733-6241 Internet: www.dwgiab.org An Equal Opportunity \ Affirmative Action Employer Customer Service: 1$77-623-6748 www.ncwaterquality.org Nne orthCarohna Natura!!Y Cover Sheet from Staff Member to Regional Supervisor DMR Review Record Facility: 92 Permit/Pipe No.: NO Month/Year Monthly Average Violations Parameter Permit Limit DMR Value % Over Linit o Weekly/Daily Violations Date Parameter Permit Limit/Tvpe DMR Value % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Violations Completed by: h ird` Date: Regional Water Quality Supervisor Signoff: — Date: 01 �� MONITORING REPORT(MR) VIOLATIONS for: Permit: % MRs Between: 5-2010 and 5-2010 Region: Winston-Salem Facility Name: % Param Name: % County: % Major Minor: % Report Date: 08/06/10 Page: 1 Violation Category: Limit Violation Program Category: NPDFS Subbasin: % Violation Action: None PERMIT: NCO021474 FACILITY: City of Mebane - Mebane WWTP COUNTY: Alamance REGION: Winston-Salem Limit Violation MONITORING OUTFALL / REPORT PPI 05 -2010 001 VIOLATION UNIT OF LOCATION PARAMETER DATE FREQUENCY MEASURE Effluent BOD, 5-Day (20 Deg. C) - 05/31/10 5 X week mg/I Concentration CALCULATED LIMIT VALUE % OVER LIMIT 5 5.42 8.5 VIOLATION TYPE VIOLATION ACTION Monthly Average Exceeded None PERMIT: NCO026689 FACILITY: Town of Denton - Denton WWTP COUNTY: Davidson REGION: Winston-Salem Limit Violation MONITORING OUTFALL / REPORT PPI LOCATION PARAMETER 05 -2010 001 Effluent BOD, 5-Day (20 Deg. C) - Concentration 05 -2010 001 Effluent BOD, 5-Day (20 Deg. C) - Concentration VIOLATION UNIT OF CALCULATED DATE FREQUENCY MEASURE LIMIT VALUE %OVER LIMIT 05/29/10 3 X week mg/I 7.5 8.53 13.78 05/31/10 3 X week mg/I 5 6.16 23.23 VIOLATION TYPE VIOLATION ACTION Weekly Average Exceeded None Monthly Average Exceeded None Pr M���� NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary September 20, 2010 Mr. Robert Wilson, City Manager City of Mebane 106 E. Washington Street Mebane, NC 27302 Subject: Compliance Evaluation Inspection — NPDES Permit No. NCO021474 City of Mebane Wastewater Treatment Plant Alamance County Dear Mr. Wilson: Jenny Graznak and Mike Thomas of this office performed a Compliance Evaluation Inspection at the Mebane WWTP in Alamance County on September 16, 2010. Dennis Hodge, Operator in Responsible Charge (ORC), was present for the inspection. This type of inspection consists of two basic parts: an in -office review of facility files and self -monitoring data and an on -site inspection of the facility. This particular inspection evaluated nine (9) areas, and observations from each area are addressed below: 1. Permit The permit became effective November 1, 2006 and expires May 31, 2011. A copy of the most recent edition of the permit, which includes new nutrient standards, was available during the inspection. You should receive information regarding the renewal of this permit in the coming months. 2. Self -Monitoring Program A review of the self -monitoring data submitted for the period May 2009 through June 2010 showed that all parameters were sampled and analyzed per the requirements of the permit. The only violation of permit limits during this time period occurred in June 2009 as an exceedance of the weekly mercury limit. 3. Laboratory The plant's on -site laboratory (#138) is certified for the following permit parameters: Residual Chlorine, Fecal Coliform, Conductivity, Dissolved Oxygen, Total Phosphorus, pH, Total Suspended Residue, and Temperature. All lab data, chain of custody forms, confirmation of meter calibrations, and thermometer verification were available during the inspection. Amy Varinosky is the Lab Supervisor and has been on staff since August 2009. R & A Laboratories analyzes Metals, BOD, Ammonia, Nutrients other than Total Phosphorus, and Fluoride samples for the plant. Meritech, Inc. analyzes Mercury and Toxicity samples. 4. Flow Measurement Influent flow is measured with a Parshall flume and an ultrasonic flow meter, which is calibrated on a quarterly basis by Instrument Specialists, Inc. Verification of calibration was available North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 One Phone: 336-771-5000 \ FAX: 336-771-4630 \ Customer Service: 1-877-623-6748 NorthCarolina Internet: www.ncwaterquality.org a " atum ly An Equal Opportunity \ Affirmative Action Employer �/ y 'IN during the inspection. According to documentation, the last calibration event occurred on June 4, 2010. 5. Sludge Handling and Disposal The plant has two sludge digesters. Approximately four times per year, Synagro brings a portable belt press on site to create sludge cakes, which are then transported to the McGill compost facility in New Hill. Synagro removes approximately 600,000 gallons from the sludge digesters during each press event. 6. Operations & Maintenance Dennis Hodge is the ORC and Morgan Turner is Back -Up ORC. Tony Bowes (Grade II) is also an operator at the plant. No major concerns were noted with respect to operation and maintenance of the facility. The plant operates a preventative maintenance computer program. The maintenance staff issues work orders once per month and more frequently for repairs, etc. A SCADA system is used to monitor and control some operations at the plant, including pump stations. The plant has a generator that will operate the entire plant aside from the digesters. The generator is run once per month under load and once per week for maintenance purposes. 7. Facility Site Review Influent is screened and metered. The plant includes two large aerations basins. Only one is currently used as an aeration basin and has six 2-speed surface aerators that run on timer. The other basin is not currently being used. The plant consists of three clarifiers, two sand filters, chlorine gas feed, chlorine contact chamber, and a sulfur dioxide basin. Alum is added for phosphorus removal on an as -needed basis, usually during the summer months. There is a surge tank at the influent. There is a proposed upgrade for the facility in order to meet the new nutrient standards. The upgrade will increase capacity from 2.5 MGD to 2.99 MGD. 8. Records/Reports The Discharge Monitoring Reports (DMRs), files, operators' logs, and lab data are maintained according to the permit. A copy of this data was available for review during the inspection. Plant data and records are very well organized and maintained. 9. Effluent/Receiving Waters The effluent is discharged into Moadams Creek in the Cape Fear River Basin. The effluent appeared clear with no visible solids. In -stream monitoring requirements have been waived as long as the City of Mebane remains a member of the Upper Cape Fear River Basin Association. The facility was found to be in compliance with NPDES Permit No. NC0021474. Please refer to the attached report for specific details from the inspection. If you have any questions concerning this report, please contact Mrs. Graznak or me at (336) 771-5000. Sincerely, Steve W. Tedder Regional Supervisor Surface Water Protection Section cc: WSRO - SWP Central Files - SWP United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 Water Compliance Inspection Report Approval expires8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 I NI 2 15I 31 N00021474 111 121 10/09/16 117 18I CI 19I SI 20II Remarks 211111111111111111111111111111111111111111111111]6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ----- ----- - — —Reserved-------- ---- I 14 751 I I I I I I I80 671 169 70131 711 I 72INI 71 L+— 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 permit Number) 09:00 AM 10/09/16 10/08/01 Mebane WWTP Exit Time/Date Permit Expiration Date 635 Corregidor Rd Mebane NC 27302 10:30 AM 10/09/16 11/05/31 Name(s) of Onsite Rep resentative(s)ITitles(s)/Phone and Fax Number(s) Other Facility Data Dennis James Hodge/ORC/919-304-9215/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Liuda Z—H4J�t,106 E Washington St Mebane NC 27302//919-563-6141/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenance Records/Reports Self -Monitoring Program Sludge Handling Disposal 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 Jennifer F Graznak WSRO WQ//336-771-5000/ ? Signature of Managem Q A Agency/Office/Phone and Fax Numbers Date ::��Reviewe A�Z _ EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 Permit: NCO021474 Inspection Date: 09/16/2010 Owner - Facility: Mebane WWTP Inspection Type: Compliance Evaluation "IN Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? ■ 0 0 0 Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ n 0 ❑ 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? n n ■ n Is the facility as described in the permit? ■ n n n # Are there any special conditions for the permit? n ■ n n Is access to the plant site restricted to the general public? ■ n n n Is the inspector granted access to all areas for inspection? ■ n ❑ n Comment: The permit and expires May 31, 2011. You should receive information regarding the renewal of this permit in the coming months. Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? ■ n n n Is all required information readily available, complete and current? ■ n n n Are all records maintained for 3 years (lab. reg. required 5 years)? ■ n n n Are analytical results consistent with data reported on DMRs? ■ n n n Is the chain -of -custody complete? ■ n n n 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? ■ n n n Has the facility submitted its annual compliance report to users and DWQ? ■ n n n (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? n Cl ■ n Is the ORC visitation log available and current? ■ n n n Is the ORC certified at grade equal to or higher than the facility classification? ■ n Cl n Is the backup operator certified at one grade less or greater than the facility classification? ■ n n n Page # 4 Orr Permit: NC0021474 Inspection Date: 09/16/2010 Owner - Facility: Mebane WWTP Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Is a copy of the current NPDES permit available on site? ■ 11 O Facility has copy of previous year's Annual Report on file for review? ■ n n n Comment: Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? ■ n In n Are the receiving water free of foam other than trace amounts and other debris? ■ n n n If effluent (diffuser pipes are required) are they operating properly? n n ■ n Comment: Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? ■ n n n Is flow meter calibrated annually? ■ n n n Is the flow meter operational? ■ n n n (If units are separated) Does the chart recorder match the flow meter? ■ n n n Comment: Aerobic Digester Yes No NA NE Is the capacity adequate? ■ n n n Is the mixing adequate? ■ In n n Is the site free of excessive foaming in the tank? ■ n n n # Is the odor acceptable? ■ n n n # Is tankage available for properly waste sludge? ■ n n n Comment: Bar Screens Yes No NA NE Type of bar screen a. Manual n b.Mechanical ■ Are the bars adequately screening debris? ■ n n n Is the screen free of excessive debris? ■ n In n Is disposal of screening in compliance? ■ n n n Is the unit in good condition? ■ n Cl n Comment: Page # 5 Permit: NCO021474 Owner - Facility: Mebane WWTP Inspection Date: 09/16/2010 Inspection Type: Compliance Evaluation Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? ■ n n 0 Is the site free of excessive buildup of solids in center well of circular clarifier? ■ n n n Are weirs level? ■ n n n Is the site free of weir blockage? ■ n n n Is the site free of evidence of short-circuiting? ■ n n n Is scum removal adequate? ■ n n n Is the site free of excessive floating sludge? ■ n n n Is the drive unit operational? ■ n n n Is the return rate acceptable (low turbulence)? ■ ❑ n Is the overflow clear of excessive solids/pin Floc? ■ n n n Is the sludge blanket level acceptable? (Approximately'/. of the sidewall depth) n n n ■ Comment: Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Surface Is the basin free of dead spots? ■ n n n Are surface aerators and mixers operational? ■ n n n Are the diffusers operational? n n ■ n Is the foam the proper color for the treatment process? ■ n n n Does the foam cover less than 25% of the basin's surface? ■ n n n Is the DO level acceptable? n n n ■ Is the DO level acceptable?(1.0 to 3.0 mg/1) n n n ■ Comment: Standby Power Yes No NA NE Is automatically activated standby power available? ■ n n n Is the generator tested by interrupting primary power source? ■ n n n Is the generator tested under load? ■ n n n Was generator tested & operational during the inspection? n n n ■ Do the generator(s) have adequate capacity to operate the entire wastewater site? ■ n n n Page # 6 Permit: NCO021474 Inspection Date: 09/16/2010 Owner - Facility: Mebane wWTP Inspection Type: Compliance Evaluation Standby Power Yes No NA NE Is there an emergency agreement with a fuel vendor for extended run on back-up power? ■ 13 n Is the generator fuel level monitored? ■ n n n Comment: Disinfection -Gas Yes No NA NE Are cylinders secured adequately? ■ n n n Are cylinders protected from direct sunlight? ■ n n n Is there adequate reserve supply of disinfectant? ■ n n n Is the level of chlorine residual acceptable? ■ n n n Is the contact chamber free of growth, or sludge buildup? ■ n n n Is there chlorine residual prior to de -chlorination? n n n ■ Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? n n n ■ If yes, then is there a Risk Management Plan on site? n n n ■ If yes, then what is the EPA twelve digit ID Number? (1 000--_� If yes, then when was the RMP last updated? Comment: In the upcoming upgrade of the plant, the gas chlorination system will change to liquid. Laboratory Yes No NA NE Are field parameters performed by certified personnel or laboratory? ■ n n n Are all other parameters(excluding field parameters) performed by a certified lab? ■ n n n # Is the facility using a contract lab? ■ n n n # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ■ n n n Incubator (Fecal Coliform) set to 44.5 degrees Celsius4-/- 0.2 degrees? n n n Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? n n n ■ Comment: Aside from the plant at the laboratory, the plant uses the services of Meritech and R&R Labs. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? ■ n n n Is sample collected below all treatment units? ■ n n n Is proper volume collected? ■ n n n Is the tubing clean? ■ n n n Page # 7 Permit: NC0021474 Inspection Date: 09/16/2010 Owner - Facility: Mebane WWTP Inspection Type: Compliance Evaluation Effluent Sampling # 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: Yes No NA NE ■ ❑ ❑ ❑ ■❑❑n Page # 8 Cover Sheet from Staff Member to Regional Supervisor DMR Review Record Facility: K �,,W VNTIFF Pern-WPipe No.: OID2I q-7 q Month/YearJA N Zo I O Monthly Average Violations Parameter Permit Limit DMR Value Over Limit Weekly Violations Date Parameter Permit Limit/ Fvpe DMR Value % Over Lirrit 'F7 vi de ile c;"_, . Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Violations Completed by: � G ReEional Water Quality Supervisor Signoff: Y Date: 3 I Date: �� �D DEPARTMENT OF THE ARMY WILMINGTON DISTRICT, CORPS OF ENGINEERS 69 DARLINGTON AVENUE WILMINGTON, NORTH CAROLINA 28403-1343 REPLY TO ATTENTION OF, March 12, 2010 Regulatory Division Action ID No. 2010-00427 Mr. Robert Wilson City of Mebane 106 E. Washington Street Mebane, North Carolina 27302 Dear Mr. Wilson: RECEIVEO Nc, Dept. of ENR MAR 15 2010 �Insrc,n-Salem iagicnal OfficP Reference is made to your letter of February 19, 2010 and the attached project area map for the City of Mebane -Wastewater Treatment Plant Upgrade. The correspondence describes the proposed upgrades of the City of Mebane Wastewater Treatment Plant to meet the new nutrient standards and expanding treatment capacity from 2.5 MGD to 2.99 MGD. It also includes the potential installation of flood prevention measures due to portions of the existing site being included in a designated floodway and flood hazard areas depicted by FEMA Flood Insurance Rate Map #3710981500j, dated September 6, 2006. The letter requested a review of the proposed work, including the identification of issues or objections that may need to be addressed. We have reviewed the subject documents and determined that, based upon the information provided and available maps, construction of the proposed work appears likely to result in impacts to jurisdictional waters of the United States which are subject to our regulatory authority pursuant to Section 404 of the Clean Water Act. Please note, however, that the report submitted with your letter did not include data forms or other information necessary to verify the size and type of wetlands or streams present within the project area. Also lacking from the report was an estimate of the amount of impacts, temporary or permanent, proposed for the project. The type of Department of the Army (DA) authorization required (i.e., general or individual permit) will be determined by the location, type, and extent of jurisdictional area impacted by the project, and by the project design and construction limits. However, based on the information provided it appears that this work might be permitted via the guidelines of Nationwide Permit #12: Utility Line Activity. Nationwide Permit #12 allows for the construction, maintenance, or repair of utility lines, such as the proposed sewer facilities and any access roads needed for the proposed work as long as the Nationwide Permit Conditions and Wilmington District Regional Permit Conditions are met. Some of these conditions to consider include: 1. The construction of the line cannot result in a change in the preconstruction contours of the site. 2. Any exposed slopes and stream banks must be stabilized immediately upon completion of the utility line crossing of each waterbody. 3. Only the minimal amount of impacts to a wetland or stream is authorized. 4. Permanent impacts cannot cause the loss of greater than '/z acre of waters of the U.S. Permanent impacts include any wetland functions or values that are adversely affected including, but not limited to, the conversion of one type of wetland to another within the permanently maintained right- of-way, or the installation of permanent access roads. In areas where the existing sewer line contains a permanently maintained right-of-way and the size of this area does not change after the installation of the new line, no permanent impacts will be assessed. In areas where the new line will be relocated within a wetland, no permanent impacts will be assessed if the old maintained line will be replanted with native species found in adjacent areas of the wetland. 5. Mitigation will be required if permanent impacts are greater than 1/10 acre of wetland impacts, or 150 linear feet of stream impacts. 6. Pre -notification is required if mechanized land clearing is: proposed within a forested wetland for the utility line right-of-way; if over 500 linear feet of waters of the U.S. will be impacted (temporary or permanent); if the line is placed within a jurisdictional wetland and will run parallel to a stream, if impact to 1/10 acre of wetland or streams will be permanently impacted; or if impervious surfaces would be used on access roads. Once again, we recommend that more detailed information regarding the presence wetlands and the expected impacts within the project corridor be performed and submitted to our office for review. Should you have any further questions related to DA permits for this project, please contact me at 919-554-4884, extension 35. Sincerely, Steve Kichefski Regulatory Specialist Raleigh Field Office 2 DEPARTMENT OF THE ARMY WILMINGTON DISTRICT, CORPS OF ENGINEERS 69 DARLINGTON AVENUE WILMINGTON, NORTH CAROLINA 28403-1343 REPLY TO ATTENTION OF: March 12, 2010 Regulatory Division Action ID No. 2010-00423 Mr. Robert Wilson City of Mebane 106 E. Washington Street Mebane, North Carolina 27302 Dear Mr. Wilson: Reference is made to your letter of February 19, 2010 and the attached project area map for the City of Mebane -Forest Ridge Lift Station Replacement. The .correspondence describes the proposed replacement of the Forest Ridge Lift Station and the proposed installation of approximately 14,000 linear feet of forced sewer line to serve existing and approved developments in the service area. The letter requested a review of the proposed work, including the identification of issues or objections that may need to be addressed. We have reviewed the subject documents and determined that, based upon the information provided and available maps, construction of the proposed work appears likely to result in impacts to jurisdictional waters of the United States which are subject to our regulatory authority pursuant to Section 404 of the Clean Water Act. Please note, however, that the report submitted with your letter did not include data forms or other information necessary to verify the size and type of wetlands or streams present within the project area. Also lacking from the report was an estimate of the amount of impacts, temporary or permanent, proposed for the project. The type of Department of the Army (DA) authorization required (i.e., general or individual permit) will be determined by the location, type, and extent of jurisdictional area impacted by the project, and by the project design and construction limits. However, based on the information provided it appears that this work might be permitted via the guidelines of Nationwide Permit 412: Utility Line Activity. Nationwide Permit #12 allows for the construction, maintenance, or repair of utility lines, such as the proposed sewer facilities and any access roads needed for the proposed work as long as the Nationwide Permit Conditions and Wilmington District Regional Permit Conditions are met. Some of these conditions to consider include: 1. The construction of the line cannot result in a change in the preconstruction contours of the site. 2. Any exposed slopes and stream banks must be stabilized immediately upon completion of the utility line crossing of each waterbody. 3. Only the minimal amount of impacts to a wetland or stream is authorized. 4. Permanent impacts cannot cause the loss of greater than '/2 acre of waters of the U.S. Permanent impacts include any wetland functions or values that are adversely affected including, but not limited to, the conversion of one type of wetland to another within the permanently maintained right-of-way, or the installation of permanent access roads. In areas where the existing sewer line contains a permanently maintained right-of-way and the size of this area does not change after the installation of the new line, no permanent impacts will be assessed. In areas where the new line will be relocated within a wetland, no permanent impacts will be assessed if the old maintained line will be replanted with native species found in adjacent areas of the wetland. 5. Mitigation will be required if permanent impacts are greater than 1/10 acre of wetland impacts, or 150 linear feet of stream impacts. 6. Pre -notification is required if mechanized land clearing is: proposed within a forested wetland for the utility line right-of-way; if over 500 linear feet of waters of the U.S. will be impacted (temporary or permanent); if the line is placed within a jurisdictional wetland and will run parallel to a stream; if impact to 1/10 acre of wetland or streams will be permanently impacted; or if impervious surfaces would be used on access roads. Once again, we recommend that more detailed information regarding the presence wetlands and the expected impacts within the project corridor be performed and submitted to our office for review. Should you have any further questions related to DA permits for this project, please contact me at 919-554-4884, extension 35. Sincerely, Steve Kichefski Regulatory Specialist Raleigh Field Office PJ DENR/ DWQ FACT SHEET FOR NPDES PERMIT DEVELOPMENT NPDES No. NCO021474 Facility Information A licant Facilit Name: City of Mebane- Mebane WWTP Applicant Address: 106 East Washington St. Mebane, N.C. 27278 Facility Address: 701 Corregidor Road Mebane, N.C. Permitted Flow 2.5 MGD Type of Waste: Domestic and industrial Facility/Permit Status: Renewal Facility Classification IV County: Alamance Miscellaneous Receiving Stream: Moadams Creek Regional Office: Winston-Salem Stream Classification: C NSW USGS To o Quad: C21SE/Mebane, N.C. 303 d Listed?: No Permit Writer: Jackie Nowell Subbasin: 03-06-02 Date: March 13,/*601 Drainage Area mil : 0.9 P. E Cl! 1'' N.C. D. ' w MAR Summer 7Q 10 cfs 0.0` Winter 7Q10 (cfs): 0.0 Average Flow cfs : 0.8 IWC % : 90 Primary SIC Code: 4952 N r E 7 20ril 1 ,ti Regional ilrG�'':!; SUMMARY OF FACILITY INFORMATION AND WASTELOAD ALLOCATION RegiC nal The City of Mebane has requested renewal of the Mebane WWTP. The 2.5-MGD WWTP discharges into Moadams Creek (a tributary to Back Creek), a class C NSW stream, in CPF02 subbasin. Moadams Creek is not listed on North Carolina's 2000 303(d) list. It is a zero flow stream that is a tributary to Back Creek. In 1996 the Cape Fear River Basin management plan recommended that no new discharges should be permitted in this watershed and existing discharges should conduct an engineering alternatives and economic analysis including connection to a regional facility. If there were no alternatives, then BOD5 = 5 mg/l, NH3 = 2 mg/1, and DO = 6 mg/l would be recommended. Upon expansion to 2.5 MGD, the Mebane WWTP was required to meet tertiary limits. There are no use support or biological ratings for Moadams Creek, however Back Creek has a use support rating of fully supporting. CFR basin plan states that low DO levels have been detected in Moadams and Back Creeks downstream of the Mebane WWTP. It has been difficult to survey the creeks due to hurricane and drought effects on the biological communities in the streams. However the absence of stoneflies does indicate water quality problems in the Back Creek watershed. Mebane currently has an active pretreatment program with Long Term Monitoring Program. There are eight significant industrial users discharging to the system. The facility has an average industrial flow of 0.179 MGD. The permitted industrial flow is 0.2026 MGD. (Mebane's application indicates that their industries are permitted for 0.3026 MGD however one user permitted for 0.100 MGD was scheduled to close in December 2000. SIUs - for Mebane WWTP are as follows: • AKG of America - heat exchanges - 0.012 MGD - continuous flow • A.O. Smith Electrical Products - electric motors - 0.0051 MGD- continuous flow • Armacell - foam pipe installation - 0.010 MGD- continuous flow • GKN Automotive - front wheel drive assembly - 0.052 MGD - continuous flow • General Electric - control panels - 0.012 MGD - continuous flow • Sandvik Coromant- tool holders - 0.0025 MGD - continuous flow l,,ice Mebane WWTP Fact Sheet NPDES Renewal Page 1 • Sterile Recoveries- hospital gowns, drapes, stainless equipment - 0.080 MGD - continuous flow • Walter Kidde- fire extinguishers - 0.029 MGD - continuous flow • Tristar Hosiery- athletic socks - 0.100 MGD - continuous flow - CLOSED IN 12/2000 Existing Effluent Limits @ 2.5 MGD Qw = 2.5 MGD BOD5 = 5 mg/1 (summer) BOD5 = 10 mg/1 (winter) NH3 = 2.0 mg/1 (summer) NH3 = 4.0 mg/1 (winter) DO = 6 mg/1 TSS = 30 mg/1 Fecal Coliform = 200/ 100m1 TRC = 17 ug/1 pH = 6-9 SU Total Phosphorus = 2 mg/1 Cadmium = 5.4 ug/1 (daily max.); 2.3 ug/1 (weekly avg.) Fluoride = 1.8 mg/1 (daily max.) Mercury = 0.048 mg/1 (daily max.); 0.012 ug/1 (weekly avg.) ** the weekly avg. limit will be dropped and only a daily max. limit of 0.012 will be given, if appropriate. Monthly monitoring for copper, chloride, TN and zinc Chronic Toxicity P/F @ 90%; January April July October TOXICITY TESTING: Current Requirement: Chronic Toxicity P/F @ 90%; January April July October The Mebane WWTP has consistently passed the toxicity test since 1997. No FAILS reported to present. Recommend renewal of chronic toxicity test @ 90%. COMPLIANCE SUMMARY: Facility has maintained an excellent compliance record since 1997. There have been no NOVs or exceedances of permitted limits. Mebane has passed all compliance evaluation inspections. For January 2001, Qw = 0. 893 MGD (approximately 36% of capacity), BOD5=2.77 mg/1, NH3=0.18 mg/l, TSS=2.9 mg/l, TN=3.1 mg/ and TP=2.15 mg/l. One exeee ane f "'- Ta In 2000, Avg. Qw = 1.048 MGD (approximately 42% of capacity), BOD5=2.22 mg/l, NH3=0.4 mg/l, TSS=2.9 mg/1, TN=7.7 mg/ and TP=1.56 mg/l. In 1999, Avg. Qw = 1.042 MGD (approximately 42% of capacity), BOD5=2.34 mg/l, NH3=0.22 mg/l, TSS=3.2 mg/l, TN=10.3 mg/ and TP=1.28 mg/1. In 1998, Avg. Qw = 1.026 MGD (approximately 41% of capacity), BOD5=2.5 mg/l, NH3=0.21 mg/l, TSS=2.5 mg/l, TN=6.9 mg/ and TP=1.36 mg/1. CORRESPONDENCE REVIEW: 10/ 13/00 -CEI -SATISFACTORY 4/28/00 - PRETREATMENT PROGRAM AUDIT - OVERALL PROGRAM IS SATISFACTORY 2/22/99 - PRETREATMENT COMPLIANCE INSPECTION - OVERALL PROGRAM IS SATISFACTORY 10/29/98 - CEI - DUCKWEED IN CLARIFIERS, TERTIARY FILTERS, AND CHLORINE CONTACT BASIN; CONTINUOUS SLUDGE WASTING FROM CLARIFIERS INSTREAM MONITORING: Mebane is a participant in the Upper Cape Fear River Basin Association and the coordinated instream monitoring effort. Individual instream monitoring requirements for DO, temperature, conductivity, and fecal coliform have been waived from the Mebane permit effective April 6, 2000. A review of instream monitoring data prior to April 2000 - Facility sampled 100 yards above the effluent and at NCSR 1940 at Moadams Creek. April and May 2000 fecal data had values that exceeded the 200/ 100ml standard however the lab did not meet the quality control, Mebane WWTP Fact Sheet NTIDFIS Relimal P;1 ;:w 2 counts <20 or >60/pad. June 1999, upstream DO values we.., — or below 5 mg/1 on 7 of 15 sampling days. In July 1999, upstream DO values were below 5 mg/l on 9 of 12 sampling days. The upstream DO average was 4.8 mg/l. The substandard DO values ranged from 3.4 mg/1 to 4.7 mg/l. In August 1999, the upstream DO average was 3.6 mg/l, the minimum value was 2.7 mg/l and the maximum value was 5.0 mg/l. In September 1999, average upstream DO was 5.7 mg/l, however there was a minimum value of 3.3 mg/1 reported. Only 3 of 12 samples were at or below 5 mg/l. It should be noted that in all these months, the downstream DO values were all well above 5 mg/1 ranging from 8.4 - 8.9 mg/1. Will recommend continuation of waiver of instream monitoring for dissolved oxygen and temperature while Mebane is a member of the Upper Cape Fear River Basin Association. PROPOSED CHANGES: The following modifications have been made to the permit: • Deletion of effluent limitations for cadmium and mercury. Modify monitoring frequency to quarterly for both parameters. • Addition of monthly cyanide monitoring. RPA was done with 12 data values from 1998 - 2000. Analysis indicated that cyanide should be limited based on a 30 ug/1 data value in Nov. 1999. Investigated further the DMR with this cyanide sample. Comments submitted by the Town reported that the pH in this sample was 12 when received at lab, but 7.0 prior to analysis. Consulted with Jim Meyers of DWQ Lab, he said that cyanide is very volatile and needs to be in a basic state. If the pH had lowered by the time of analysis, the level of Cn was probably underestimated and was higher than 30 ug/l before analysis. The plant was probably hit by a slug of cyanide, which has long since gone through, if sample was in Nov. 99. A review of influent data for that day reported cyanide <5 ug/l. This creates some uncertainty about the validity of the 30-ug/l data value. Based on this uncertainty, will request monthly monitoring for cyanide. The Town can request that cyanide monitoring be reevaluated if they report twelve months of below detection. • Chloride monitoring has been changed to 2/month based on results of RPA analysis that predicts chloride levels to exceed the allowable concentration. In addition, chloride monitoring was changed based on the class IV facility rating, • Modify monitoring frequency from 3/week to daily for BODS, TSS, NH3, DO, Fecal coliform, pH, and TRC based on Mebane being a Class IV facility (NCAC 2B .0508). Recommended ver WSRO. PROPOSED SCHEDULE FOR PERMIT ISSUANCE: Draft Permit to Public Notice: 03 / 21 / 2001 Permit Scheduled to Issue: 05/25/2001 STATE CONTACT: If you have any questions on any of the above information or on the attached permit, please contact Jackie Nowell at (919) 733-5083 ext. 512. NAME: A44-4 DATE: Mebane WWTP Fact Sheet NPDES Renewal Page 3 REGIONAL OFFICE COMMENT: NAME: DATE: -��' NPDES SUPERVISOR COMMENT: NAME: mebalic WW'rP act Shect NPDES Renewal Rmw 4 State of North Carolina Department of Environment and Natural Resources Division of Water Quality Michael F. Easley, Governor William G. Ross, Jr., Secretary Kerr T. Stevens, Director e�� NCDENR March 21, 2001 Mr. Michael Hite City of Mebane 106 East Washington St. Mebane, North Carolina 27278 Subject: Draft NPDES Permit Permit No. NCO021474 Mebane WWTP Alamance County Dear Mr. Hite: The Division has drafted a NPDES permit for the above referenced facility. The following modifications have been made to the permit: • The effluent limitations for cadmium and mercury will be dropped based on evaluation of the reasonable potential analysis. Cadmium and mercury will now be monitored quarterly at the same time as the chronic toxicity test. • Monthly effluent monitoring for cyanide will be added based on evaluation of the reasonable potential analysis. Mebane can request reevaluation of monitoring requirements after twelve months, if all data values are below detection. • Effluent monitoring for chloride has been increased to twice per month from monthly based on the class IV plant rating. • The monitoring frequencies for BOD5, TSS, NH3, dissolved oxygen, fecal coliform, pH and total residual chlorine have been modified from 3 per week to daily based on Mebane's rating as a Class IV facility (NCAC 2B .0508). • Mebane is a participant in the Upper Cape Fear River Basin Association and is a part of the environmental monitoring plan. Individual instream monitoring has been waived from the NPDES permit. In the event that Mebane should leave the Association, instream monitoring for dissolved oxygen, conductivity and temperature will be reinstated. Instream fecal coliform monitoring will be discontinued based on revised DWQ procedure. ■ Please note that this facility discharges to nutrient sensitive water (NSW) and may already have total phosphorus limits as a result of the NSW strategy. In 1997 the Clean Water Responsibility Act (House Bill 515) was enacted, with the intent to strengthen the control of nutrients from all discharges to NSW waters. Facilities permitted to discharge > 500,000 gallons per day, and any new or expanding facilities, will be subject to nutrient limitations for total nitrogen and total phosphorus according to House Bill 515 requirements. The nutrient limitations are effective January 1, 2003, unless a compliance extension was received and approved by the Division. If an extension was not received/approved, the nutrient limits appear in this permit. If an extension was approved, the nutrient limits will be deferred until results of the nutrient response modeling effort are completed. Please note that modeling results may result in limits lower than those mandated by House Bill 515. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone 919-733-5083/FAX 919-733-0719 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper Please note that you have until April 28, 2001 to send written comments on this draft permit to my attention. If you have any questions regarding this matter, please contact me at (919) 733-5083, extension 512. Si erely, acq n M. Nowe I NP Unit cc: Winston Salem Regional Office / Water Quality Section Point Source Compliance /Enforcement Unit NPDES Unit/Permit File Aquatic Toxicology Unit Roosevelt Childress, EPA Region IV Pe..,.., No. NCO021474 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, City of Mebane is hereby authorized to discharge wastewater from a facility located at Mebane Wastewater Treatment Plant 701 Corregidor Road (SR 1997) southwest of Mebane Alamance County to receiving waters designated as MoAdams Creek in the Cape Fear River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV hereof. This permit shall become effective This permit and authorization to discharge shall expire at midnight on May 31, 2006 Signed this day Kerr T. Stevens, Director Division of Water Quality By Authority of the Environmental Management Commission ppppp- mit No. NC0021474 SUPPLEMENT TO PERMIT COVER SHEET City of Mebane is hereby authorized to: Continue to operate an existing 2.5 MGD wastewater treatment facility consisting of influent bar screen, grit chamber, dual 1,117,000 gallon aeration basins, three clarifiers, sand filters, gas chlorination, chlorine contact chamber, dechlorination, aerobic sludge digestors, located at Mebane Wastewater Treatment Plant, on 701 Corregidor Road (NCSR 1997), southwest of Mebane, Alamance County, and 2. Discharge from said treatment works at the location specified on the attached map into the MoAdams Creek, which is classified C-NSW waters in the Cape Fear River Basin. MlEaj= VIP �,) it Y"* (i Facility Information Latitude: 36'05'20- Sub -Basin: 03-06-02 Longitude: 79'17'15" Quad #: C21SE Stream Class: C-NSW Receiving Stream: Moadams Creek Permitted Flow: 2.5 MGD -gab Facility Location Mebane WWTP NCO021474 Alamancr- Cminty A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Permit No. NCO021474 During the period on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall(s) serial number 001. Such discharges shall be limited and monitored by the Permittee as specified below: BOD, 5 d BOD, 5 d Total Sus -RR3 as NFFA as I Total Phos 1 through October 31 LIMITS or) y; verage Weey _ at y axlmum =Measurer Average Freauer or Notes: 1 Sample locations: E - Effluent, I - Influent, U - Upstream, D - Downstream, for instream sampling locations, see Supplement to Effluent Limitations Page A (2). Instream monitoring requirements may be provisionally waived per Condition A (3). 2 The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal). 3 The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/I. 4 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. 5 Compliance shall be based upon a quarterly average of weekly samples. 6 Chronic Toxicity (Ceriodaphnia) P/F at 90%; January, April, July and October; See Supplement to Effluent Limitations Page A (4). There shall be no discharge of floating solids or visible foam in other than trace amounts. Permit NCO021474 SUPPLEMENT TO EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SPECIAL CONDITIONS A. (2) INSTREAM MONITORING REQUIREMENTS Parameter Sample Type Frequency Frequency Dissolved Oxygen Grab 3/Wk (June —Sept) 1/Wk (October — May) Conductivity Grab 3/Wk (June —Sept) 1/Wk (October— May) Fecal Coliform Grab 3/Wk (June —Sept) 1/Wk (October — May) SAMPLE LOCATIONS 1. U —Upstream 100 feet of discharge 2. D = D1, D2, and D3; D1 — Downstream at NCSR 1940, Moadams Creek, D2 — Downstream at Back Creek at NCSR 1936, D3 — Downstream at Back Creek at NC Highway 54 A. (3) PROVISIONAL WAIVER OF INSTREAM MONITORING REQUIREMENTS Instream monitoring requirements in this NPDES permit shall be provisionally waived so long as the Permittee remains a member of the Upper Cape Fear River Basin Association and the Association continues to function as approved by the Division and Environmental Management Commission. If the Permittee does not participate in the Association or if the Association ceases to function, the instream monitoring requirements in this permit become effective immediately; and the Division may reopen this permit by administrative letter to establish additional instream monitoring requirements, it deems necessary to adequately characterize the effects of the discharges on water quality in the receiving stream. PPPPPP' SUPPLEMENT TO r:rTLu rn r Lama a ra a av,. -3 AND MONITORING REQUIREMENTS SPECIAL CONDITIONS A (4). CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 90 %. The permit holder shall perform at a minimum,guarterlU monitoring using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The tests will be performed during the months of January, April, July, and October. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. If the test procedure performed as the first test of any single quarter results in a failure or ChV below the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The chronic value for multiple concentration tests will be determined using the geometric mean of the highest concentration having no detectable impairment of reproduction or survival and the lowest concentration that does have a detectable impairment of reproduction or survival. The definition of "detectable impairment," collection methods, exposure regimes, and further statistical methods are specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to the following address: Attention: Environmental Sciences Branch North Carolina Division of Water Quality 1621 Mail Service Center Raleigh, North Carolina 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete, accurate, include all supporting chemical/physical measurements and all concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Branch at the address cited above. Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required during the following month. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring. CC: Permits and Engineering Technical Support Branch Alamance County Health Dept. Central Files WSRO SOC PRIORITY PROJECT: Yes No X If Yes, SOC No. To: Permits and Engineering Unit Water Quality Section Attention: Charles Alvarez Date: 30 June 1995 NPDES STAFF REPORT AND RECOMMENDATION County Alamance Permit No. NC0021474 PART I - GENERAL INFORMATION 1. Facility and Address: City of Mebane WWTP 106 East Washington Street Mebane, NC 27302 2. Date of Investigation: 29 June 1995 3. Report Prepared by: W. Corey Basinger Environmental Engineer 4. Persons Contacted and Telephone Number: * Ms. Linda Holt, Pretreatment Coordinator (919) 563-6141 5. Directions to Site: From Mebane, take 3rd Street (NCSR 1962) southwest of town and turn right onto Corrigidor Street. The WWTP is 1/2 mile on Corrigidor Street. 6. Discharge Point(s), List for all discharge points: Latitude: 360 05' 20" Longitude: 790 17" 15' U.S.G.S. Quad No. C-21 SE U.S.G.S. Quad Name Mebane 7. Site size and expansion area consistent with application? _X_ Yes No If No, explain: PDES Permit Staff Report 2. Residuals handling and utilization/disposal scheme: a. If residuals are being land applied, please specify DEM Permit No. WO0004033. Residuals Contractor AMSCO, Inc. Telephone No. 910-766-0328 b. Residuals stabilization: PSRP X PFRP Other c . Landf ill: d. Other disposal/utilization scheme (Specify): 3. Treatment plant classification (attach completed rating sheet) . cc -Ass 73 4. SIC Code (s) : 4952 Primary 01 Secondary 02 Main Treatment Unit Code: 0 2 1 x 3 PART III - OTHER PERTINENT INFORMATION 1. Is this facility being constructed with Construction Grant Funds or are any public monies involved. (municipals only)? N/A 2. Special monitoring or limitations (including toxicity) requests: None at this time. 3. Alternative Analysis Evaluation: Has the facility evaluated all of the non -discharge options available. Please provide regional perspective for each option evaluated. N/A Spray Irrigation: Connection to Regional Sewer System: Subsurface: Other disposal options: Topography (relationship to flood plain included): WWTP is located adjacent to Moadams Creek. 9. Location of nearest dwelling: Greater than 1000 feet. 10. Receiving stream or affected surface waters: Moadams Creek a. Classification: Class C-NSW b. River Basin and Subbasin No.: 03-06-02 C. Describe receiving stream features and pertinent downstream uses: Commercial/Agricultural Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS 1. a. Volume of Wastewater to be permitted: 2.5 MGD (Ultimate Design Capacity) b. What is the current permitted capacity of the Waste Water Treatment facility? 2.5 MGD C. Actual treatment capacity of the current facility (current design capacity)? 2.5 MGD d. Date(s) and construction activities allowed by previous Authorizations to Construct issued in the previous two years. Project # CS370572-03 March 2, 1994 This authorization consists of the addition of two (2) sludge aeration units with associated piping and pumps in the existing 50 ft diameter digestor, installation of a 4,500 GPM emergency effluent pump to prevent excessive rise in water levels in the chlorine contact tank and final filters, and other electrical control equipment. e. Please provide a description of existing or substantially constructed wastewater treatment facilities; The facility currently consists of a bar screen, grit chamber, two (2) aeration basins, three (3) clarifiers, sand filters, chlorine contact chamber, aerobic digestion, and dechlorination. f. Please provide a description of proposed wastewater treatment facilities. N/A g. Possible toxic impacts to surface waters: None known. h. Pretreatment Program (POTWs only): in development approved X should be required not needed PDES Permit Staff Report PART IV - EVALUATION AND RECO1rMENDATIONS The City of Mebane has applied for renewal of NPDES Permit No. NC0021474, which covers the Mebane WWTP. During the recent inspection, no problems were noted with operation and/or maintenance. Also, all recently constructed equipment was operating properly. WSRO recommends reissuance of this permit in accordance with Division guidelines. Environmenta Enginee Q" s4w� er Qual' Regional Supervisor I/— + V Date �-� -z-0 I, Date 6.4 Fil Ch to-iri• _ - � � �'�` lt.. � y�•�t� A --� 'k5 '�•`-�.-•Q... "tb ILl _ f.:7 - •:'!. r'. 'es- �+ � � is , t �• 1 Sl t .I H R 1. M 4 .4i/ .,�•'\ S .•-i i - �,'� ��' I � yri`.�„ r• � ' .l � �. �*s) ,tr. .r +� tom- I �"r i� i . y. WT • r a J iso an , �' -� i � \l, \l �•. G j. _ :.^, / r-._'• %•� I .� - •� i .. � � , Icy If EK Q.5 oZd ZDAI 0-1 -�F ✓.s �i o n/ (o C0 r. )� 9/ g rail ��t r ,1116'.. , e»� CQ V 1 CLASSIFICATION Owner or Contacl Mailing Address' IQLA County: Telephone:`a tg - 3 - A Present Classification' New Facility__ Existing Facility.._ NPDES Per. No. NCOo? t 4-44-Nondisc. Per. No-WQ,Q__ Health DeptPer No.__ Rated by: � ^�+P4 Telephone: %-�+I- -Y,26A DateJ!4dae&9 Reviewed by: Health Dept Telephone: Regional Office Telephone: 2 ?_ 67 Central Office Telephone: ORC:" �lk�JE Grade: Telephone: Check Classification(s): _ Subsurface SprM Irrigation „__ Land Applica ton lion: Circle One I II oil N Total Points ' - % Wastewater Classifica ( ) :!_ �� � _ •I� : � : 1=� �.►IG!. ��. 1:.. =►1 ...1 �. _ _ • uU� .. _ ./ �. ►I� r'fi:: ::.�.h !ll!.► '.: .!l= _•i� -: /Ice .i0:1 : 1!_► .•I SUMU114FACE C ASSIPICATI ON (check an units that apply) 1`__septic tanks 2,__tuimP tank s`__siPhon or Pump-dosing.systems 4"_118nd Nter 5. 9rease trapInterceptor s-oiinwater "Pan sore 7`_9ravtty subsurface treatment and dispoaat: ate -pressure Subsurface treatment and disposai: SPRAY PF*ATI0N CLASSIFICATION (check all units that apply) 1.prelimineq treatment (definition no. 32 ) X --iagoons 5`_septic tanks 4,,—__pumP tanks 5.__,_PumPs a"__sand tiller 7.9rease trapAnterceptor 8,__011/water $*Pandora 4`__disintection addition for nutrient/algae control 1o.chemisi 11,__SVay irrigation of wastewater In addition to the above Classifications, of wastewater in excess of thess components shall be rated using the point rating system and will require an operator with an appropriate dual certification. LJkND ApPLiCATIONlRESIDUALS CLASSIFICATION (Applies only to permit holder) 1.__�Vnd application of biosolids, residuals or contaminated sots on a designated 911e. WASTEWATER TRFAT1riBa FACKM CLASSIFICATION The following systems Shan be assigned a ass 1 classification. IMIMM the flow is of a signbkcant quantity or the technology is unusually co x, to require consideration by the Commission on a case -by -case basis: (Check / Appropriate) 1_- Owwater Separator Systems consisting only of physical separation, pumps and dispose$ g.Septic Tank/Sand Filler Systems consisting only of septic tanks, dosing apparslus, pumps,sand fibers, disinfection and direct dschargs: nary tMaime . lagoons. pumps, disinfection. necessary chemist treatment fora. —lagoon Systems consisting only of pre algae or nutrient control, snd direct discharge: 4, Closed -bop Recycle Systems; air -sir in carbon adsorption- disinfection 5_ —Groundwater Remediatbn Systems consisting only of otVwater separator, pumps, aipp g. and dksposal: $, __Aquacunure operations with discharge to surface walars: 7_ _Water Plant sludge handling and back -wash water treatment: a. —Seafood processing consisting of screening and disposd P. —Single-family discharging systems. with the exception of Aerobic Treatment Units, win be classified it permitted after Joy 1. 1993 or it upon Inspection by the Division. It IS found that the system is not being adequately operaiod or maintained- Such systems wiil be notified of the classification or reclassification by the Commission. in writing• Dwing scale is used i( (2) .(3) (4) (5) (6) ting wastewater treatment facilities: cle appropriate points) ITEM POINTS fs'dvsirlal Pratr"mers LkAs or Industrial Pretraatmert Program (see dafk>Jtton No. �).--__--_-- M GN FLOW OF PLANT IN gpd (rot applkabie to nonraruamkuud cooing waters, slrdge handing fadtaiee for water purti"tion planes, lotaly cbssd rycie "Orra(sss definition W. 11), and facil"t ow"isting onty CO Item (4)(d) or Items (4)(d) and (11xd)J 0 - 20,000. _ —»t 2 20.001 - 60,000 ----- -- - 3 60.001 100.000. 4 100,001 250,000 250.001 - 500,000.. — —---•••S 500,001 - 1,000,000.. 1.000,001 - l,000,000_— 2,t100.001 (and up) rate 1 point addabnal for each 200.000 Wd We Illy up b a auimwm of Design Flow (gedLZ►ADD Pf;a1MNAR1' UNfTSrPROCESSES (tw deiribn t4o.22) 1 (a) BarScreere-- (b) Or Mechanical Screen, tudic Servant or Corrvrilnuting Devices f" —'4D (c) an Removal i.' or or A GA Rerr+ovai Dwicicsrated FµbwL newriihpical (f) Or Itstrumerted Flow Moaazrrarrent — i 2 -- (g) (h) Preasrailon.---_-- -- -- _2 (t divert Flow Equaftatbn._..._—__ara2 (1) Graate or Oil Segtora - GravIty Mechanical..— _— - --- Dtcsdved Air Flotation _ _ _a (�) Prechbrinatlon.____� —' PRIAARYTREITMEN7 UNITS'PfOCESSl3 (a) Septic Tank (ace definition No. 43) (b) Imhoff Tank— (c) (d) Primary Ctarille.rs. — Settling Ponds or Setting Tanks for Inorganic Non -toxic Matortab (sludge handling facQhias for water purffication plant, sand, gravel, store, and other minv,g opararlons except recrealbnai activhies such &s earn 2 NDAWTREATME or gold--_— 7 LUTSPROCESSES SEOC (a) carbonaceous Sups �0 (1) AoratbnFBph Purity Oxygen sysin _ _ Dmusad Air�3�J Mechanical Air System (fixed, GoaikV or rotor) Separate Skidge R&seration. -- (8j Trh*JN Rter 7 High Rate. Standard Rate_ —S Packed--- (li) Dlologhcat Aerated Mar or Aeratad Biological Filter __ __ 10 (N) Aerated Lagoons._....— (v) Rotating Biological Cortactors__________- --—_...-•10 9 (vi) Sand Fillers -krtermMant biological Recirculating biological -3 M) Slabillmion Lagoons ---- ----- -- (lot) Single gage syttam for combined carbonaceous removal of BOD and nitrogerout removal Mrtfication (tee definhion No. 12)(Poires for this Item have to be in addition to tarn (5)(a)(i) through utlllzlnp the azlended &station process (sits ddtnhion No.U) _ -- utnizing other than the extended aeration process. (s) Nutriers add'..tions to enhance BOO -)addition. (:1) Biological Culture (-Super Bugs — --- (b) Nitrogenous Stage �0 (i) Aeration - High Purity Oxygen system 0 Dlffucad Air _—t a Mechanical Air System (fixed, floating or rotor)— So-araie Sludge Rsaerr ion._... --_ _...-.---- (p) Trickling Flier -High Rate. S Standard Rate...— — - -- - - --- Packed Biological Aerated Flher or Aerated Biological FIItor. 10 Iv) Rotating Biological Ev) Sand Fitter - keermtrert Recirculating biological 01) TERTiARYORADVANCED TREATMENT WfTSrPROCFSSFS (a) Activated Carbon Beds - whhout carbon regeneration-._ _ 16 whh carbon regeneration....._— - (b) Powdered or Granular AcOvaled Carbon Food - without carbon rageneratlon with carbon regeneration_ e) AM •tripping.....—._...-------- . d) Denhrfficailon Process_—_.— e) Elect . _.....-5 1) Foam Separation—.-------- — -- ------•^- ' • _" ' . a p) (h) ion Land Application of Treated Enivort (tee definhion No. 22b) (not appncablo for sand. gravel atom and other ttmtlar mining oparations) by high rate Infiltration ---- --� We Phosphorous Removal by Blotogicx Processes (See daftnhlon No. 24)M f �) Poflshing Ponds without aerattom j whhaeratlon— — ..- ----------� (a) (9) (10) doused or mechancal.. - _• (m) Reverse Osmoais.._..».­_Y» _ (n) Sand or f4ixe is Filters - tow rate..—_ Ngh rate _--___» »...__ (o) Tnatmert pre for removal of metat or eyaNde..... (p) treatment processes for removal of toxic mnated" other than metal or cyanide» SLJDGE TREATtvtB•IT (a) Sludge Digestion Tank - Haated (anaarobic) _ »t Aerobic — ._ —_ 5 Unheated (b) Sludge Stabilization (chemical or tfemul).. _—_-------_ . — - _ »_._ —_—.. — — — — 5 / (c) Sludge Drying Beds - Gravity— (d)Vacuum Assisted.-- _w —�------------------ -- (d) Sludge (a) Sludge Condhiorer (chemical or thermal) 1C (f) Sludge Thickener (gravity).. _ _....» ........------- .--- (g) Dissolved Air Flotation Unh (not applicable to a unk rated as (h) Sludge Gas Utilization (Including pas storage).. 2 (1) Sludge Holding Tank - Aerated.... _ -•5 ()) Sludge incinerator (not including activated carbon ngereration)._» .._______ _ . _— —_ _ ».»_ .10 (k) Vacuum Filter, Centrifuge, or Rher Press or other similar dewaering devices. RESIDUALS UTILIZATIOWDISPOSAL (including hcirwrated ash) (a) Lagoons..... .................. .......... ......... .......... __._»._..____—__--_-._2 (b) Land Application (surface and subsurface) (see definition 22a) by contracting to a land application operator or landfill operator who holds the land _ application _ permit or landfill permit........._ .............. ..... ...»...»..» .__. _ _. ... _... (c) Dedicated Landfill(burial) by the pennhtee of the wastewater treatment facility- (a) Chlorination --__...---_._--_--_ --- ..-----__..._..._—._...—____ (b) (d) Radiation......_.._....._.. ...»......._......__.. »....._._ _...».. —._ .._.»_.»_ _._ _.»._____5 CHEMICAL ADDITION SYSTEM(S) ( see definition No. tot) (rot applicable to chemical additions rated as kern (3)Q). (5)(a)(xU. 16)(a)• (6)(b), (y)(b). (7)(s), (oat), (9)(b) or (o)(c) 6 Points each: List --- ---------.w----_— --_-------------- — ----^ _---_-----_-5 I41SCELI-ANEOUS WTSrPPOCESSES (a) Holding Ponds, Holding Tanks or Settling Ponds for Organic or Toxic Materials Including wastes from mining operations containing nitrogen or phosphorus compounds in amounts significantly greater than is common for domestic waste water...»..._._... ... -....... ._...»......—...».... _—.. ......_._—. »»....».__ ______A (b) Effluent Flow Equalization (not applicable to storage basic which are Inherent In land application systems)-- 2 (c) Stage Discharge (rot applicable to storage baslns Inherort in land apprication systems) S (d) Pumps ....... _—--- __».._--_--__--..._.—...__--_--� (a) Stand -By Power (f) Thermal Pollution Cortrol TOTAL------ CLASSFiCATI N CtrsI ... _.--___—..._..._.._.—_.—__...__—�_--. --_ _ _ _6 25 Points Class 11._ _ _ .....—.26-50 Points Points Class N »___. _-- . — ... » _ -. 66 Up Points Facilities having a rating of one through four pofrtts• Induslve, do not require a oertffiod operator. Faculties having an adlvaied sludge process will be as<Sgred a minimum classiliadbn of Class IL Fatuities having treatment prooesses for the removal of metal or cyanide will be assigned a minimum classification of Class iL Facilities having treatment processas for the bktiogical eomovat of phosphorus will be assigned a minimum ciassificatbn of Class Ill. A004 DEFNiTIONS The following definitionts char apply throughout this Subchapter. (1) Activated Carbon Beds. A physical/chemical method for reducing soluble organic material from wastewater sffluert; The column -type beds used in this method will have a flow rate varying from two to eight gallons per minute per square toot and may be ehher upflow or downflow carbon beds. Carbon may or may not be regenerated on the wastewater treatment plant she; (2) Aerated Lagoons. A basin In which all solids are matntaied In suspension and by which biolog;cal oxidation or organic matter Is reduced through aMcia0y accelerated transfer of oxygen on a flow -through basis; (3) Aeration. A process of bringing about intimate contact between air or high purity oxygen In a liquid by spraying, agitation or difluslonAU) Extended Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 16 hours. (4) Agrlcuhuratly managed she. Any she on which a crop is produced, managed, and harvested (Crop includes grasses, grains. Uses, aic.); (5) Air Stripping. A process by which the ammonium Ion Is first converted to dissolved ammonia (pH adjustment) with the ammonia then released to the atmosphere by physical means; or other similar processes which remove petroleum products such as benzene, toluene, and xylona; (6) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide exlremofy high temperatures which volatilize and oxidize the absorbed Impurities; (7) Carbonaceous Stage. A stage of wastewater treatment deslgned to achieve 'secondary' effluent Omits; (8) Centrifuge. A mechanical oevlcs in winch centrtfugal force Is used to separate solids from ifqulds or to separate liquids of dffarert donslSor (9) Chemical Addhlon Systems- The addition of chemical(s) to wastewater al an application point for purposes of Improving solids removal, pH adjusimwa. alkalinity control, etc.; the capablthy to experiment with different chemicals and different application points to achieve a specific rmuh will be considered one system; the capabilty to add chemical(s) to dual units will be rated as one system; capability to add a chemical at a ditfsrart application points for different purposes will result In the systems being rated as separate systems; (10) Chemical Sludge Conditioning. The addhion of a chemical compound such as am, aortic chloride, or a polymer to wet sludgs to aulescs the mass prior to Its application to a dewalsring device; (11) Closed Cycle Systems. Use of holding ponds on holding tanks for containment of wastewater containing inorganic, non-loxic materials from sand, graveL crushed stone or other similar operations. Such systems shalt carry a maximum of two points regardless of pumping faclihies or any other appurtenances; (12) Combined Removat of Carbonaceous BOD and Nitrogenous Removal by Nitrification.. A single stage system required to achieve pormh etfiuert limbs an BOD and ammonla ntrogen within the same biological reactor, (13) Dechlorinailon. The partial or compiwo reduction of residual chlorine in a liquid by any chemical or physical process; (14) Donhrilicatlon Process. The conversion of nitrate -nitrogen to rdtrogen pas; ■ Complete items 1, 2, and 3. Also complete item 4 if Restricted Delivery is desired. ■ Print your name and address on the reverse so that we can return the card to you. ■ Attach this card to the back of the mailpiece, or on the front if space permits. 1. Article Addressed to: Mr. David Cheek, Manager City of Mebane I06 E. Washington Street Mebane, NC 27302 OOr3 -LV -r 70 7011 1570 0001 8546 2750 A. Signature X O 1 _ ❑ Agent Y �LI Addressee ive b Pnnt N C. a of e e D. Is delivery address different from item 1? U Yes If YES, enter delivery address below: fp(No 3. Se a Type Dorcertmed Mail 0 Express Mail ❑ Registered ❑ Return Receipt for Merchandise ❑ Insured Mail ❑ C.O.D. 4. Restricted Delivery? (Extra Fee) ❑ Yes UNITED STATES POSTAL SERVICE First -Class Mail Postage & Fees Paid \ LISPS Permit No. G-10 • Sender: Please print your name, address, and ZIP+4 in this box • NCDENR - Division of Water Quality 1J. C7 585 Waughtown Street Winston-Salem, NC 27107 II ! t t,. !�;ll;ii ; t I;,! III ''�;; I•ii; ;