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Home My WebLink AboutNCG110054_COMPLETE FILE - HISTORICAL_20130607STORMWATER DIVISION CODING SHEET NCG PERMITS PERMIT NO. /V DOC TYPE 2S HISTORICAL FILE ❑ MONITORING REPORTS DOC DATE ❑ a n 13 D fa D r7 YYYYMMDD A � �Mja NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor Triangle W WTP Attn: Glen E. Whisler, County Engineer 120 E Parrish St., Ist Floor Durham, NC 27701 Division of Water Quality Charles Wakild, P. E. Director June T. 2013 John E. Skvarla, III Secretary Subject: NPDES Stormwater Permit Coverage Renewal COC 4NCG 110054 Dear Permittee: In response to your renewal application for continued coverage under Stormwater General Permit NCG 110000, the Division of Water Quality (DWQ) is forwarding herewith the reissued Certificate of Coverage and stormwater General Permit. This permit is reissued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between the state of North Carolina and the U.S. Environmental Protection Agency, dated October 15, 2007 (or as subsequently amended.) The following information is included with your permit package: • A new Certificate of Coverage + A copy of the stormwater General Permit + A copy of a Technical Bulletin for the General Permit • Copies of the Discharge Monitoring Report (DMR) Form • Copies of the Annual Discharge Monitoring Report Form (if applicable) • Copies of the Qualitative Monitoring Report Form The General Permit authorizes discharges of stormwater only, and it specifies your obligations with respect to stormwater discharge controls, management, monitoring, and record keeping. Please review the new permit to familiarize yourself with all changes in the reissued permit. Significant changes to the General Permit are outlined in the attached Technical Bulletin. Your coverage under the General Permit is transferable only through the specific action of DWQ. This permit does not affect the legal requirements to obtain other permits which may be required by DENR, nor does it relieve the perrnittee from responsibility for compliance with any other applicable federal, state, or local law, rule, standard, ordinance, order, judgment, or decree. If you have any questions regarding this permit package please contact the DWQ Stormwater Permitting Unit at 919-807-6300. Sincerely, fbr Charles Wakild, P.E. cc: DWQ Central Files Stormwater Permitting Unit Files 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 Internet: www.ngwatergualily.go An Equal Opportunity 1 Affirmative Action Employer None rthCarolina Naturally Certificate of Coverage http://portal.ncdenr.org/web/wq/ws/su/permit-renewal J \ STATE O1= NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY GENERAL PERMIT No. NCG1I0000 CERTIFICATE OF COVERAGE No. NCG110054 STORM WATER NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision of North Carolina Generai 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, Durham County is hereby authorized to discharge stormwater from a facility located at "Triangle W W'I'P 5926 NC Hwy 55 E Durham Durham County to receiving waters designated as Northeast Creek, class WS-IV;NSW water(s) in the Cape Fear River Basin(s) in accordance with the stormwater pollution management requirements, monitoring and reporting requirements, and other conditions set forth in Parts I, 11, 111 and IV of General Permit No. NCG 1 10000 as attached. This certificate of coverage shall become effective June 1, 2013. This Certificate of Coverage shall remain effective for the duration of the General Permit. Signed this day June 1, 2013. for Charles Wakild, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission of 1 5/23/2013 9:28 AM Atli 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 18, 2012 Mr. Joseph Pearce, P.E. Utility Division Manager Durham County 5926 NC Hwy 55 E Durham, NC 27713 Subject: Compliance Evaluation Inspection Triangle WWTP Permit No. NCO026051 and.NCG 110054 Durham County Dear Mr. Pearce: On November 27, 2012, Cheng Zhang of the Raleigh Regional Office (RRO) conducted a compliance evaluation inspection of the subject facility. The assistance provided by you and Mr. Bob Stewart, the wastewater superintendent and operator in responsible charge (ORC) of the facility, was appreciated as it facilitated the inspection process. The inspection report is attached. The following observations were made: Triangle WWTP is permitted to discharge at a rate of 12.0 MGD and consist of: mechanical fine screens, mechanical grit removal, Parshall flume, three 5-stage biological nutrient removal (BNR) trains, four secondary clarifiers, five tertiary sand filters, post aeration ultraviolet disinfection, sludge lagoons, waste and return activated sludge pumping system, methanol, potassium hydroxide, and sodium hypochlorite storage and feed systems. The plant discharges to Northeast Creek, a Class WS-IV NSW water in the Cape Fear River basin. All primary, secondary, and tertiary treatment and post -treatment processes, especially the BNR system, were in good operational condition. One of the three BNR trains and two of the four clarifiers and was not in use because of low flow. The chemical feed systems for methanol, sodium aluminate, potassium hydroxide were all functioning well. 2. Sludge from the lagoon was removed recently. Construction of the sludge storage, dewatering, and loading facility was slightly behind schedule at the time of inspection. Once the construction is completed, the lagoon will serve as backup storage for wasted sludge. I Three standby power generators are tested under load monthly. The generators will be activated automatically when primary power is out. The generators have capacity to operate th�e0tire facility during nower outrage. North Carolina Division of Water Quality 1628 Mail service Center Raleigh, NC 27699-1628 Phone (9t9) 791.4200 Customer service intemet: www.nmaterquality,org Location; 3,900 Barrett Drive Raleigh, NC 27609 Fax (9t9) 788-7159 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer— 50% Recycled/] 0% Post Consumer Paper tVf� Trian'gle WWTP — Durham County Permit No. NCO0260512 and NCG 110054 Compliance Evaluation Inspection 4, The ORC maintains a daily logbook. Lab results, chain -of -custody forms, and DMRs were complete and current, kept in good order and ready for review. August 2012 DMR data were compared to lab bench sheets; no data transcription errors were noted during the inspection. 5. The right of way to the outfall was well maintained. The effluent was observed to be clear and free of solids. No visible impacts were noted immediately downstream the effluent pipe. 6. Field lab parameter (Certificate No. 671) calibration and analysis records were reviewed during the inspection. 7. A compliance evaluation inspection for the NPDES stormwater permit (No. NCGI 10054) was also conducted. The facility has developed and implemented a Stormwater Pollution Prevention Plan (SPPP), which includes all required components. All stormwater discharge outfalls were observed; these outfalls and the right-of-way were well maintained. Please be reminded to conduct annual employee training and second stormwater qualitative monitoring before the end of 2012. The overall condition of Triangle WWTP is compliant with Division standards. If you have any questions regarding the attached reports or any of the findings, please contact Cheng Zhang at: (919) 791-4200 (or email: cheng.zhang-,,0ncdenr.trov). Sincerely, Cheng Zhang Environmental Specialist Attachments Compliance Inspection Reports Cc: Central Files w/attachment Raleigh Regional Office w/attachment Rob Stewart — ORC w/attachment Durham County j i Permit: NCG110054 SOC: County: Durham Region: Raleigh Compliance Inspection Report Effective: 06/01/08 Expiration: 05/31/13 Owner: Durham County Effective: Expiration: Facility: Triangle WWTP 5926 NC Hwy 55 E Contact Person: Joseph R Pearce Directions to Facility: System Classifications: Primary ORC: Secondary ORC(s): On -Site Representative(s): Related Permits: Inspection Date: 1112712012 Primary Inspector: Chang Zhang Secondary Inspector(s): Title: Director Certification Durham NC 27701 Phone: 919-201-3356 Entry Time: 01:00 PM Exit Time: 03:30 PM Phone: Phone: 919-791-4200 Reason for Inspection: Routine Inspection Type: Compliance Evaluation Permit Inspection Type: Municipal WWTP > 1 MGD, Stormwater Discharge, COC Facility Status: ■ Compliant Q Not Compliant Question Areas: Storm Water (See attachment summary) Page: 1 Permit: NCG110054 Owner - Facility: Durham County Inspection Date: 11/27/2012 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? # floes 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? # 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? Has the Stormwater Pollution Prevention Plan been implemented? Comment: Employee training will be conducted by the end of 2012. Qualitative Monitoring Has the facility conducted its Qualitative Monitoring semi-annually? Yes No NA NE ■❑❑❑ Comment: Second qualitative monitoring will be conducted by the end of 2012, Analytical Monitoring Yes No NA NE Has the facility conducted its Analytical monitoring? ❑ ❑ ■ ❑ # Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ❑ ■ ❑ Comment: 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: Page: 3 ALT, EEFF 1� NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coieen H. Sullins Dee Freeman Governor Director Secretary December 7, 2011 Mr. Joseph Pearce, P.E. Utility Division Manager Durham County 5926 NC Hwy 55 E Durham, NC 27713 Subject: Compliance Evaluation Inspection Triangle WWTP Permit No. NCO026051 and NCG 110054 Durham County Dear Mr. Pearce: On November 21, 2011, I, Cheng Zhang of the Raleigh. Regional Office (PRO) conducted a compliance evaluation inspection of the subject facility. The assistance provided by you and Mr. Bob Stewart, the wastewater superintendent and operator in responsible charge (ORC) of the facility, was appreciated as it facilitated the inspection process. The inspection report is attached.. The following observations were made: Triangle WWTP is permitted to discharge at a rate of 12.0 MGD and consist of- mechanical fine screens, mechanical grit removal, Parshall flume, three 5-stage biological nutrient removal (BNR) trains, four secondary clarifiers, five tertiary sand filters, post aeration ultraviolet disinfection, sludge lagoons, waste and return activated sludge pumping system, methanol, potassium hydroxide, and sodium hypochlorite storage and feed systems. The plant discharges to Northeast Creek, a Class WS-IV NSW water in the Cape Fear River basin. 1. All primary, secondary, and tertiary treatment and post -treatment processes, especially the BNR system, were in good operational condition. One of the three BNR trains and two of the four clarifiers and was not in use because of low flow. The chemical feed systems for methanol, sodium aluminate, potassium hydroxide were all Functioning well. 2. Waste activated sludge is pumped to the sludge lagoon, from which a contractor dredges and treats the sludge with a belt press. 3. Three standby power generators are tested under load monthly. The generators will be activated automatically when primary power is out. The generators have capacity to operate the entire facility during power outrage. North Carolina Division of Water Quality 1628 Mail Service Center Raleigh, NC 27699-1028 Phone (919) 791-4200 Customer Service Intemet: nuw.nc%vaterquality,org Location; 3800 Barrett Drive Raleigh, NC 27609 F�LX (919) 798-7159 1-977-623-6748 An Equal Opponunity/Affirmative action Employer —50%RceycUll0°/ Post Consumer Paper L Triangle WWTP — Durham County Permit No. NCO0260512 and NCG 110054 Compliance Evaluation Inspection 4. The ORC maintains a daily logbook. Lab results, chain -of -custody forms, and DMRs were complete and current, kept in good order and ready for review. July 2011 DMR data were compared to lab bench sheets, no data transcription errors were noted during the inspection. The right of way to the outfall was well maintained. The effluent was observed to be clear and free of solids. No visible impacts were noted immediately downstream the effluent pipe. 6. I also conducted a compliance evaluation inspection for the NPDES stormwater permit (No. NCG 110054). The facility has developed and implemented a Stormwater Pollution Prevention Plan (SPPP), which includes all required components. I observed all stormwater discharge outfalls, these outfalls and the right-of-way were well maintained. The overall condition of Triangle WWTP is compliant with Division standards. if you have any questions regarding the attached reports or any of the findings, please contact Cheng Zhang at: (919) 791-4200 (or email: chengzhang&cderingov). Sincerely, Cheng Zhang Environmental Specialist Attachments Compliance inspection Reports Cc: Central Files w/attachment Raleigh Regional Office w/attachment Rob Stewart — ORC wlattachment Durham County i 1. Compliance Inspection Report Permit: NCGI10054 Effective: 06/01/08 Expiration: 05/31/13 Owner: Durham County SOC: Effective: Expiration: Facility: Triangle WWTP County: Durham 5926 NC Hwy 55 E Region: Raleigh Durham NC 27701 Contact Person: Joseph R Pearce Title: Director Phone: 919-201-3356 Directions to Facility: System Classifications: Primary ORC: Certification: Phone: Secondary ORC(s): On -Site Representative(s): Related Permits: Inspection Date: 11121/2011 Entry Time: 09:00 AM Exit Time: 12:00 PM Primary Inspector: Cheng Zhang Phone: 919-791-4200 Secondary Inspector(s): Reason for Inspection: Routine Inspection Type: Compliance Evaluation Permit Inspection Type: Municipal WWTP > 1MGD, Stormwater Discharge, COC Facility Status: ■ Compliant ❑ Not Compliant Question Areas: Storm Water (See attachment summary) Page: 1 Permit: NCG110054 owner -Facility: Durham County Inspection Date: 11/21/2011 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? ■ ❑ ❑ ❑ # 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? ■ ❑ ❑ ❑ Has the Stormwater Pollution Prevention Plan been implemented? ■ ❑ ❑ ❑ Comment: Qualitative Monitoring Yes No NA NE Has the facility conducted its Qualitative Monitoring semi-annually? ■ ❑ ❑ ❑ Comment: Analytical Monitoring Yes No NA. NE Has the facility conducted its Analytical monitoring? ❑ ❑ ■ ❑ # Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ODE ❑ Comment: Permit and Outfalls Yes No NA NE # Is a copy of the Permit and the Certificate of Coverage available at the site? ■ ❑ ❑ ❑ # Were all outfalis 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: Page: 3 North Carolina Beverly Eaves Perdue Governor Mr. Glen Whisler, F.E. 120 E. Parrish Street, I" Floor Durham, NC 27701 NIFAA AN, ' j;A' R�ng MT�Fm 2;= a __ 1/';U / 0 NC®ENR Department of Environment and Natural Resources Division of Water Quality Coleen H. Sullins Director January 12, 2010 Subject: Compliance Evaluation Inspection Durham County Triangle Wastewater Treatment Plant (WWTP) NPDES Permit Number NCO026051 Siormwater Permit Number NCG 110054 Durham County Dear Mr. Whisler: Dee Freeman Secretary On January 7, 2010, Mrs. Mandy Hall and Ms. Vicki Webb of the Raleigh Regional Office conducted a compliance evaluation inspection of the Triangle WWTP with the assistance of Mrs. Stephanie Brixey, compliance manager, Mr. Tony Mencome, superintendent of the facility, Mr. Rob Stewart, operator in responsible charge (ORC), and Mr, Joe Pearce, Utility Division Manager. Their help was appreciated as it facilitated the inspection process. The following observations were made: I. The Durham County is authorized to discharge wastewater from the facility located at Durham County Triangle WWTP, 5926 NC Highway 55, in Durham County. The permit expires April 30, 2011. The facility discharges into the receiving waters designated as Northeast Creek, a stream classified as WS-IV, nutrient sensitive water (NSW) waters within the Cape Fear River Basin. 2. The Triangle WWTP is permitted to discharge at a rate of 12 MGD and consists of: mechanical fine screens, mechanical grit collection unit, influent pump station, parshall flume, three 5-stage BNR trains, four secondary clarifiers, five tertiary filters, UItraviolet disinfection, post aeration, sludge lagoons, waste and return activated sludge pumping system, and methanol, potassium hydroxide, and sodium hypochlorite storage and feed systems. 3. Chlorine, Dissolved Oxygen, pH, and Temperature are analyzed in-house. All other parameters are analyzed by Meritech Laboratories. 4, A file review of the plant records indicated that all records are being kept as required. A comparison of the April 2009 and August 2009 DMRs indicated no discrepancies. .One hCaroli na Natimallty North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone (919) 791-4200 Customer Service Internet: www.ncwaterquality.org 1628 Mail Service Center Raleigh, NC 27699.1628 FAX (919) 788-7159 877-623.6748 An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper Durham County Triangle WWTP NC0026051 and-NCG I' 10054 ' ' Durham County' , r '' 5. " The plant and laboratory was very clean and well maintained. No operational or maintenance issues were noted. Visitation and operations logs were reviewed and found to be complete and satisfactory. 6. A compliance evaluation inspection was also conducted of the facility's Stormwater Permit NCG110054 during the January 71h visit. All of the facility's stormwater outfalls were observed during the inspection. The facility has installed several berms at the Headworks to prevent overspray and excess washdown water from entering Outfall 005. This has complied with the feasible alternative practices in the SW Permit. In addition, the area downstream of Outfall 002 has become inundated due to beaver dams. This property is located on the periphery of the Army Corps of Engineers property. Contact Eric Alsmeyer with the Corps at 919-554-4884 regarding removal of the beavers. All outfalls were in excellent condition. 7. The stormwater pollution prevention plan (SP3) was reviewed. It contained all the required components and met all requirements. Qualitative and quantitative inspection records were available for review and found to be complete and acceptable. The overall conditions of the Durham County Triangle WWTP are compliant with Division standards. If you have questions regarding the attached report or any of my findings, please contact Vicki Webb at: (919) 791-4200 (or email: vicki.webb c .ncdenr. ov}. Sincerely Vicki Webb Environmental Specialist Cc: (RRO-SWP files Central Files Compliance Inspection Report Permit: NCG110054 Effective: 06/01/08 Expiration: 05/31/13 Owner: Durham County SOC: Effective: Expiration: Facility: Triangle WWTP County: Durham 5926 NC Hwy 55 E Region: Raleigh Durham NC 27701 Contact Person: Joseph R Pearce Title: Phone: 919-201-3356 Directions to Facility: System Classifications: Primary ORC: Certification: Phone: Secondary ORC(s): On -Site Representative(s): Related Permits: Inspection Date: 01/0712010 Entry Time: 09:17 AM Exit Time: 11:56 AM Primary Inspector: Vicki Webb 2^� 1� 5�-- -L r Phone: Secondary Inspector(s): Mandy Hall;b 0 Phone: Reason for Inspection: Routine ' l 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: NCG110054 Owner • Facility: Durham County Inspection Date: 01/07/2010 Inspection Type: Compliance Evaluation Reason for Visit: Routine Inspection Summary: Page: 2 Permit: NCG110054 Owner -Facility: Durham County Inspection Date: 01/07/2010 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? ■ ❑ ❑ ❑ # 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? ■ ❑ ❑ ❑ Has the Stormwater Pollution Prevention Plan been implemented? ■ ❑ ❑ ❑ Comment: Qualitative Monitoring Yes No NA NE Has the facility conducted its Qualitative Monitoring semi-annually? ■ ❑ Cl ❑ Comment: Analytical Monitoring Yes. No NA NE Has the facility conducted its Analytical monitoring? ❑ ❑ ■ ❑ # Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ❑ ■ ❑ Comment: 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 Page: 3 AAZA NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Mr. Glen Whisler, P.E. Engineering Department 120 E. Parrish Street, I" Floor Durham, NC 27701 Division of Water Quality Coleen H. Sullins Director August 24, 2009 SUBJECT: Stormwater Compliance Evaluation Inspection Durham Triangle W WTP Permit No: NCGI 10054 Durham County Dear Mr. Whisler: Dee Freeman Secretary On June 18, 2009, Mack Wiggins and Mandy Hall of the North Carolina Division of Water Quality, Surface Water Protection Section, Raleigh Regional Office, conducted a stormwater compliance evaluation inspection of the Durham Triangle, at 5926 NC Highway 55 E. The assistance offered by Mr. Joseph Pearce, Utility Division Manager, Mr. Tony Mencome, Wastewater Superintendent and Back-up ORC, Mr. Andy Lambeth, Project Manager and Mr. Boyd McKenzie, Collection ORC and Maintenance Manager was appreciated. The facility was found to be in Compliance with General Permit NCI 10000 at the time of this inspection. I. The following observations were made during the stormwater inspection: 1. The Stormwater Pollution Prevention Plan for this facility contained all the components as required by NCGI 10000. The facility must continue to aggressively implement the plan. 2. The facility has seven stormwater outfalls. Qualitative monitoring was performed at the stormwater outfalls as required by NCG 110000. Continue to monitor your outfaIls. Qualitative monitoring must be conducted during the fall months (September - November), and during the spring months (April -June) and recorded on the attached forms provided by DWQ. 3. Analytical monitoring is not required at this facility. The facility does not have any vehicle maintenance activity and does not use more than 55 gallons of new motor oil per month when averaged over a calendar year. 4. All chemicals are stored in the secondary containment as required. 5. The facility had improved their mapping to include aerial photographs with location overlays. one NhCarolma Naturally North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone (919) 791-4200 Customer Service Internet: www.ncwaterquality.org 1628 Mail Service Center Raleigh, NC 27699-1628 FAX (919) 788-7159 877-623-6748 An Equal Opportunity/Affirmative Action Employer — 50% Recycled110°k Post Consumer Paper Mr. Gl&lWliisle`r�*7 V I r C e 'of Durliam��:' ountyl August 2 2 II. Stormwater outfall observations: From visual inspections, most stormwater outfalls were in good condition. Stormwater outfall 001 had some standing water which was clear with little turbidity. Thanks for your cooperation during the inspection. If you or your staff have any questions, please call me at (919)791-4200. Sincerely, ack Wiggins Environmental Specialist Raleigh Regional Office Cc' Durham County Health Department Central Files �R FilS3 Permit: NCG110054 SOC: County: Durham Region: Raleigh Compliance Inspection Report Effective: 06/01/08 Expiration: 05/31/13 Owner: Durham County Effective: Expiration: Facility: Triangle WWTP 5926 NC Hwy 55 E Contact Person: Joseph R Pearce Directions to Facility: System Classifications: Primary ORC: Secondary ORC(s): On -Site Representative(s): Related Permits: Title: Inspection Date: 0611812009 Entry Time: 11:30 AM Primary Inspector: Mack K Wiggins M Ll iA/ Secondary Inspector(s): Durham NC 27701 Phone: 919-201-3356 Certification: Exit Time: 06:00 PM Phone: Phone: 919-791-4200 Reason for Inspection: Routine Inspection Type: Stormwater Permit Inspection Type: Municipal WWTP > 1MGD, Stormwater Discharge, COC Facility Status, ■ Compliant ❑ Not Compliant Question Areas:. E Storm Water (See attachment summary) Page: 1 Permit: NCG110054 Owner -Facility: Durham County Inspection Date: O6/1812009 Inspection Type: Stormwater Inspection Summary: Reason for Visit: Routine Page: 2 Permit: NCG110054 Owner - Facility: Durham County Inspection Date: 06/18/2009 Inspection Type: Stormwater 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"? ■ n n n # Does the Plan include a detailed site map including outfall locations and drainage areas? ■ n n n # Does the Plan include a list of significant spills occurring during the past 3 years? ■ n n ❑ # Has the facility evaluated feasible alternatives to current practices? ■ n ❑ n # 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? ■ n n n # Does the Plan include a list of Responsible Party(s)? ■ ❑ n ❑ # Is the Plan reviewed and updated annually? ■ n n n # Does the Plan include a Stormwater Facility Inspection Program? ■ ❑ ❑ ❑ Has the Stormwater Pollution Prevention Plan been implemented? ■ D ❑ ❑ Comment: Less than 9 % of the plant site is impervious. The plant site in 93 acres. Qualitative Monitoring Yes No NA NE Has the facility conducted its Qualitative Monitoring semi-annually? ■ ❑ n ❑ Comment: Recommend that the ORC use the qualitative monitoring forms provided by the DWQ. Analytical Monitoring Yes No NA NE Has the facility conducted its Analytical monitoring? ❑ ■ ❑ n # Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ■ ❑ ❑ Comment: The facility does not use more than 55 gallons of new motor oil when averaged over a calendar year. The site does not do any vehical maintenance. Permit and Outfalls Yes No NA NE # Is a copy of the Permit and the Certificate of Coverage available at the site? ■ n n ❑ # Were all outfalls observed during the inspection? ■ r1 fl ❑ # If the facility has representative outfall status, is it properly documented by the Division? n ❑ ■ ❑ # Has the facility evaluated all illicit (non stormwater) discharges? ■ ❑ ❑ ❑ Page: 3 Permit: NCG110054 Owner -Facility: Durham County Inspection bate: 0611 B12009 Inspection Type: Stormwater Reason for Visit: Routine Comment: Generally most stormwater outfalls were in good condition, Stormwater outfall 001 had standing water which was clear with little turbidity. Stormwater outfall 003 was plugged at the time of the inspection. Please clear stormwater outfall 003. Page: 4 f COUNTY OF DURHAM ENGINEERING DEPARTMENT October 20, 2008 RETURN RECEIPT REQUESTED CERTIFIED MAIL 4 7002 0860 0008 6301 8601 Mack Wiggins, Environmental Specialist Division of Water Quality -Raleigh Regional Office Water Quality Section 1628 Mail Service Center Raleigh, NC 27699-1628 Re: Stormwater Compliance Evaluation Inspection Triangle Wastewater Treatment Plant (TWWTP) Permit No.: NCG110054 — Durham County Dear Mr. Wiggins: jfir= i�7 EL �, �•�� {�� I I• OCT 2 4 2M8 fDENR RAi_EiG,1 OFf10i;+ On August 2, 2008, Durham County staff and United Water staff participated in a stormwater compliance system inspection with you. On September 25, 2008, we received the stormwater compliance inspection system report. This report requests that we respond to items 1 through 4 of section I1 within 30 days of our receipt of this report. I have had our contractor, United Water, prepare this response, see attachment. If you have any questions regarding this response, please feel free to contact me at 919- 560-7992. Sincerely, PJosePearce, P.E. ision Manager Encls: cc: Glenn Vance, TWWTP ORC — United Water Richard Simms, Project Manager JRP/jld 120 E. Parrish Street, Law Bldg., Ist Floor, Durham, N,C. 27701 (919) 560-0735 Fax (919) 560-0740 Equal Employment/Affirmative Action Employer ° United 0 October 16, 2008 Water SUCZ Mr. Joseph R. Pearce, P.I. Utility Division Manager, Durham County 5926NC Hwy 55 East Durham, North Carolina 27713-4481 Subject: SWP3 Compliance Inspection Dear Mr. Pearce; United Water Hydro Management LLC Triangle Wastewater Treatment Plant 5296 NC Highway 55 East Durham, North Carolina 27713 telephone 919 544-8280 facsimile 919 544-8590 C7 OCT 2 4 Z2 E DENR RALEIGH RCGICi�,L OFFICE I On August 2, 2008, Mr. Mack Wiggins of the North Carolina Division of Water Quality, Surface Water Protection Section, Raleigh Regional Office, conducted a stormwater compliance evaluation inspection of our facility. As a result of the SWP3 compliance inspection there were several observations made that needed to be addressed within our Stormwater Pollution Prevention Plan. Please note our response for each one of the observations made. "These were: • Observation #I: Documentation of any spill and corrective actions taken to mitigate spill impacts when they occur. Response: Section 4.2 of our Plan addressees this observation and is updated regularly. • Observation 42: The Stormwater Pollution Prevention Plan must be reviewed and updated annually. Response: Section 6.2 of our Plan addresses this observation, however, the word annually has been inserted into the language to further clarify our current practice of annual updates, see attachment # 1. • Observation #3: The plan must addresslincltide a feasibility study, whereby the possible elimination or reduction of exposure of pollutants to stormwater is assessed. Response: Roadway weep holes for stormwater collection system have had plugs placed within them. This will capture any small spill and can be opened after cleanup. • Observation 44: The plan must show employee signatures. Employee signature document that the employee has received training for spill response, cleanup procedures and preventive maintenance. Response: Section 5.3 of our Plan addressees this observation, however, at the time of this inspection the latest documentation was not copied into the Plan. The original training documents are kept in a separate file near the operations area of the administrative building. This oversight has been corrected and moving forward greater emphasis will be placed on keeping the documents in both places, see attachment #2. Should you have any questions, comments or require additional information, please do not hesitate to contact me. S Frankie Olin }the United Watyt Project Manager, Triangle WWTP Attachments 1. Copy of page where manual insertion was made to include the word "annually". "]'his will be formalized during our next review. 2. Copy of training sign in list. cc: Mr. Richard Simms, Utility Project Manager Durham County Triangle Wastewater Treatment Facility Storm Water Pollution Prevention Plan 6.0 ANNUAL SITE COMPLIANCE EVALUATION & PLAN REVISIONS ATTACHMENT 01 6.1 ANNUAL SITE COMPLIANCE EVALUATION Triangle WWTP must conduct an Annual Site Compliance Evaluation of the storm water management practices in use. The objective of the evaluation is to assess the .overall effectiveness of this SWP3 and to modify and improve the SWP3, as appropriate. This annual evaluation is conducted by Triangle Wastewater Treatment Facility's SWP3 Team and typically occurs during the fourth quarter of each year. The evaluation includes the following elements: • Inspect storm water drainage areas for evidence of pollutants entering the drainage system; • Ensure the drainage area delineations remain accurate and the figures are updated, as necessary; • Assess whether improvements to BMPs or additional control measures are needed; and • Revise the list of significant materials, industrial activities and potential pollutant sources, as necessary. The Annual Site Compliance Inspection form contained in Appendix G will be used to record the findings of the evaluation. Completed inspection forms will be maintained in Appendix G of this SWP3. 6.2 PLAN REVISIONS Based on the findings of the Annual Site Compliance Evaluation, the SWP3 must be revised annually to reflect current conditions. Necessary facility changes will be implemented as soon as practical. Facility changes in design, construction, operations or maintenance that may impact the potential for storm water pollutants will also require the SWP3 to be amended. Once the SWP3 is revised, it must be signed by the Operations Manager. Section 1.3 Facility Certification will be re -certified with each SWP3 revision. This SWP3 is retained with the storm water records in the Triangle WWTP central files. �.°United Water United Water it$" Name of Training Coordinator: TRAINING DOCUMENTATION FORM Page 1 of 2 Phone Number: PIease complete the form in its entirety and forward to your local Human Resource Department. For all safety training, a copy of the Training Documentation Form must be kept on site in the safety training rile for five years. To be completed by Human Resources Title of Training Session: 08 Stormwater COURSE CODE: SESSION ID: Category: (please check one) ❑ Internal ❑ External ❑ 01 General/Business Skills: training or learning that facilitates learning at work, i.e., team skills, communications, etc. CEU: (if applicable) ® 02 Technical/Job-specific: training or learning that lead to improved job -specific skills and capabilities Course Description: ❑ 03 Management Development ❑ 04 Safety/Quality ❑ 05 Computer ❑ 06 Customer Service ❑ 07 Continuing Education ❑ 08 Suez University Course Prerequisites: (if applicable) ❑ 09 Personal Development: promotes, continuous learning, i.e., Dale Carnegie, project team participation, etc. ❑ 10 Other Primary Delivery Method: (please check one) Materials Used: (please check all that apply) Date of Training: 4/15/08 N Instructor Led ❑ TVNCR Time: {$am-0700 ❑ On -the -,lob Training ❑ Flip Charts Durationn:: 1.0 hr ❑ Computer Based ❑ Audio ®Handouts El Workbooks Cost per student: (e.g. training space, materials, ❑ Video ❑ Other (please specify) food, lodging, facilitator fee} ❑ Self Stud Training Location: (please include address) Instructor Name: Vendor: Reason for Training: TWWTP GV ❑ New Information ❑ Recertification Phone/Fax: Vendor Address: ® Refresher ❑ Career Development ❑ Skill Development ❑ OSHA Requirement 01/30/02 HSF-001 Retain safety training documentation on site for five years. TJnitedWater �$' TRAINING DOCUMENTATION FORM •. Page 2 or 08 Stormwater Employee ID Name Signature.. G V,C �. 2- S 17 01/30/02 HSF-001 Retain safety training documentation on site for five years. Postal (DomesticCERTIFIED MAIL-r. RECEIPT ru For delivery Information visit our website at wwwxspsxom�p r� 1 0 F F I C I A L UE 4' Postage $ M Certified Fee fl Retum Receipt Fee Postmark E3 (Endorsement Required) Here O Restricted Delivery Fee E3 iEndorsement Required) M L1 Total MR. JOSEPH PEARCE, UTILITY DIVISION MANAGER C:1 ENGINEERING DEPT. — COUNTY OF DURHAM ro ent , 120 E. PARRISH STREET, 1ST FLOOR M DURHAM, NC 27701 p STORMWATER.CELNCG110054.DURHAM.Co Street, or PO 9124/08.MAILED. 9/24/08.SWP.WIGGINS PS Form :0r August 2006 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. Article Addressed to: MR. JOSEPH PEARCE, UTILITY DNISiON MANAGER ENGINEERING DEPT. — COUNTY OF DURHAM 120 E. PARRISH STREET, 1ST FLOOR DURHAM, NC 277.01 STORMWATER.CEI.NCG110054.DURHAM.CO. 9124108.MAILED. 9124108.SWP WIGGINS A Sign turn I X , ,tJf/ ❑ Agent ❑ Addressee eceived bWrirlired Ne J C. Date of Delivery L. D. is delivery address different from item 1? ❑ Yes If YES, enter delivery address below: ❑ No ti 3. Service Type JIM Certified Mail ❑ Express Mail © Registered 12 Aetum Receipt for Merchandise ❑ Insured Mail ❑ C.O.D. 4. Restricted Delivery? (Extra Fee) ❑ Yes 2. Article Number (r7008 0500 QQQQ 3917; 2415 'iarrsler from service laben P5 Form 3811, February 2004 Domestic Return Receipt 102595-02-M-1540 UNITED STS'PS��,�tt�3EFiVECE�h:':' Sender: Please print your name, address, and ZIP+4 in this box • [LP 1Ii ; iRaleigh Regional Office w Surface Water Protection i$q 1628 Mail Service Center i b tW aikpvl!!td Raleigh, NC 27699 U jj E�imlrei�dfL uaEResdrre! o �. Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Coleen H. Sullins, Director Division of Water Quality September 24, 2008 CERTIFIED MAIL RETURN RECEIPT REQUESTED 7008 0500 0000 3917 2415 Mr, Joseph R. Pearce, Utility Division Manager Engineering Department County of Durham 120 E. Parrish Street, I" Floor Durham, North Carolina 27701 SUBJECT: Stormwater Compliance Evaluation Inspection Durham Triangle W WTP Permit No: NCG 110054 Durham County Dear Mr. Pearce: On August 2, 2008, Mack Wiggins of the North Carolina Division of Water Quality, Surface Water Protection Section, Raleigh Regional Office, conducted a stormwater compliance evaluation inspection of the Durham Triangle, at 5926 NC Highway 55 E. Your assistance and cooperation was very helpful and appreciated during the inspection process. I. The following observations were made during the stormwater inspection: The Stormwater Pollution Prevention Plan for this facility contained all the components as required by NCGI I0000. The facility must continue to aggressively implement the plan. 2. Qualitative monitoring was performed at the stormwater outfalls as required by NCG 110000. Continue to monitor your outfalls. Qualitative monitoring must be conducted during the fall months (September -November), and during the spring months (April -June) and recorded on the forms provided by DWQ. 3. Analytical monitoring is not required at this facility. The facility does not have any vehicle maintenance activity and does not use more than 55 gallons of new motor oil per month when averaged over a calendar year. 4. All chemicals are stored in the secondary containment as required. Raleigh Regional office 1628 Mail Service Center phone (919) 571-4700 Water Quality Section Raleigh, NC 27699-1628 facsimile (919) 571-4718 Customer Service 1-800-623-7748 jan NCDENR Mr. Joseph Pearce, P•E., Utility Division Manager Page 2 ti II. Please note the Stormwater Pollution Prevention Plan must address the following: 1. Documentation of any spill and corrective actions taken to mitigate spill impacts when they occur. 2. The Stormwater Pollution Prevention Plan must be reviewed and updated annually. 3. The plan must address/include a feasibility study, whereby the possible elimination or reduction of exposure of pollutants to stormwater is assessed. 4. The plan must show employee signatures. Employee signature document that the employee has received training for spill response, cleanup procedures and preventive maintenance. Please respond to items I through 4 of section I1 within 30 days of receipt of this letter. Thanks for your cooperation during the inspection. If you or your staff have any questions, please call me at (919)791-4200. Sincerely, �lL Mack Wiggins Environmental Specialist Surface Water Protection cc: Central Files RRO File Compliance Inspection Report Permit: NCG110054 Effective: 06/01/08 Expiration: 05/31/13 Owner: Durham County SOC: Effective: Expiration: Facility: Triangle WWfP County: Durham 5926 NC Hwy 55 E Region. Raleigh Durham NC 27701 Contact Person. Joseph R Pearce Title: Phone: 919-201-3356 Directions to Facility: System Classifications: Primary ORC: Secondary ORC(s): On -Site Representative(s): Related Permits: Certification: Phone: Inspection Date: 09/02/2008 Entry Time: 12:00 PM Exit Time: 06:00 PM Primary Inspector: Mack K Wiggins 41X-A) Phone: 919-791-4200 Secondary Inspector(s): ' Reason for Inspection: Routine Inspection Type: Stormwater Permit Inspection Type: Municipal VWVrP > 1 MGD, Stormwater Discharge, COC Facility Status: ■ Compliant 0 Not Compliant Question Areas: 0 Storm Water (See attachment summary) Page: 1 Permit: NCG110054 Owner -Facility: Durham County Inspection Date: 09/02/2008 Inspection Type: Stormwater Reason for Visit: Routine Inspection Summary: Page: 2 .+ Permit: NCG110054 Owner -Facility: Durham County Inspection Date: 09/02/2008 Inspection Type: Stormwater Stormwater Pollution Prevention Plan 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? # 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? Has the Stormwater Pollution Prevention Plan been implemented? Reason for VIsIt; Routine Comment: The plant site is 93 acres. Less than 9% of the plant site is impervious. When spills occur the SWPPP need to address corrective actions taken to mitigate spill impacts. The plan need to address that the SWPPP will be reviewed updated annually. The SWPPP need to state that a feasibility study will always be conducted. The Plan needs to show employee signatures which received training in spill response, cleanup procedures and preventative maintenance. Qualitative Monitoring Has the facility conducted its Qualitative Monitoring semi-annually? Comment: The ORC must use the state monitoring forms provided when conducting qualitative monitoring. Analytical Monitoring Has the facility conducted its Analytical monitoring? # Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? Comment: The facility does not have any vehicle maintenance activity and does not use more than 55 gallons of new motor oil when averaged over a calendar year. Permit and Outfalls # Is a copy of the Permit and the Certificate of Coverage available at the site? Yes No NA N E ■000 Yes No NA NE ❑ ❑ ■ ❑ 1=000 Yes No NA NE ■000 Page: 3 N Permit: NCG110054 Owner -Facility: Durham County Inspection Date: 09/02/2008 Inspection Type: 5lormwater Reason for Visit: Routine # Were all outfalls observed during the inspection? ■❑D0 # If the facility has representative outfall status, is it properly documented by the Division? 0 D ■ D # Has the facility evaluated all illicit (non stormwater) discharges? Comment: The faciity has five outfalls. All outfall locations are clear and accessible for monitoring. ■ ❑ n 0 Page: 4 Michael E. Easley, Govcrnor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Coleen H. Sullins, Director Division of Water Quality March 7, 2008 Ms. Vickie Dudiek NC National Guard 4105 Reedy Creek Road �4 . MAC 112Q0$ Raleigh, NC 27607-6410 I DUO, u,; ..: Subject: No -Exposure Certification NCGNE0382 NC National Guard -Durham 801 Stadium Drive, Durham, NC Durham County Dear Ms. Dudick: The Division has reviewed your submittal of the No -Exposure Certification for Exclusion from NPDES Stormwater Permitting form. Based on your submittal and signed certification of no exposure at the above referenced facility, the Division is granting your conditional exclusion from permitting as provided for under 40 CFR 126.22(g), which is incorporated by reference in North Carolina regulations. We are also hereby rescinding your current Certificate of Coverage NCG080542. Please note that by our acceptance of your no -exposure certification, you are obligated to maintain no - exposure conditions at your facility. If conditions change such that your facility can no longer qualify for a no - exposure exclusion, you are obligated to immediately obtain NPDES permit coverage for your stormwater discharge. Otherwise, the discharge becomes subject to enforcement as an un-permitted discharge. Your conditional no -exposure exclusion expires in five years (February 28, 2013). At that time you must re -certify with the Division, or obtain NPDES permit coverage for any stormwater discharges from your facility. Your conditional exclusion from permitting does. not affect your facility's legal requirements to obtain environmental permits that may be required under other federal, state, or local regulations or ordinances. If you have any questions or need further information, please contact Sarah Young at (919) 733-5083, ext. 502, or at sarah.young@ncmail.net. cc: Raleigh Regional Office -Ron Boone Sincerely, ORIGINAL SIGNED BY KEN PICKLE for Coleen H. Sullins DWQ Central Files — wlattachments Stormwater Permitting Unit Files Fran McPherson -Budget Office;, NCGO80542 Permit File WtMRA N. C. Division of Water Quality 1617 Mail Service Center Raleigh, North Carolina 27699-1617 (919) 733-7015 Customer Service 1-877-623-6748 Michael F. Easley, Governor • / William G. Ross Jr., Secretary North CarZina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality Mr. Chuck Hill Utility Division Manager Durham County Engineering Department 120 East Parrish St., Suite 100 Durham, NC 27701 Dear Mr, Mill: June 13, 2003 i -r Subject: General Permit No. NCG110000 - - Triangle Wastewater Treatment Facility COC NCG1 t0054 Durham County In accordance with your application for a discharge permit received on March 11, 2003 we are forwarding herewith the subject certificate of coverage to discharge under the subject state — NPDES general permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215 .1 and the Memorandum of Agreement between North Carolina and the US Environmental Protection agency dated May 9, 1994 (or as subsequently amended). Please take notice that this certificate of coverage is not transferable except after notice to the Division of Water Quality. The Division of Water Quality may require modification or revocation and reissuance of the certificate of coverage. This permit does not affect the legal requirements to obtain other permits which may be required by the Division of Water Quality or permits required by the Division of Land Resources, Coastal Area Management Act or any other Federal or Local governmental permit that may be required. If you have any questions concerning this permit, please contact Aisha Lau at telephone number (919) 733-5083 ext. 578. Sincerely, ORIGINAL SIGNED BY WILLIAM G. MILLS Alan W. Klimek, P.E. cc: Raleigh Regional Office Central Files Stormwater and General Permits Unit Files N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699.1617 (919) 733.7015 AMA ND Customer Service 1 800 623-7748 y STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY GENERAL PERMIT NO. NCG110000 CERTIFICATE OF COVERAGE No. NCGI10054 STORMWATER DISCHARGES 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, Durham County Engineering Department is hereby authorized to discharge stormwater from a facility located at Triangle Wastewater Treatment Facility 5926 Highway 55 East Durham Durham County to receiving waters designated as Northeast Creek, a class WSIV NSW stream in the Cape Fear River Basin in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, IV, V and VI of General Permit No. NCG 110000 as attached. This Certificate of Coverage shall become effective June 13, 2003. This Certificate of Coverage shall remain in effect for the duration of the General Permit. Signed this day June 13, 2003. ORIGINAL SIGNED BY ,• WiL LIAM C. MILLS Alan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission 7 e 3 MsDos 4e— VLZ o w1ro ilb .0 u., 1997, Maptech, fflg ava