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Home My WebLink AboutNC0023353_NPDES Draft Permit_20061025Mr. Timothy F. Frush Public Works Director Town of White Lake 1879 White Lake Drive Dear Mr. Frush: October 25, 2006 ENR-FRO IV 2 6 2006 Michael F. Easley, Governor State of North. Carolina William G. Ross, Jr., Secretary Department of Environment and Natural Resources Alan W. Klimek, P.E., Director Division of Water Quality Subject Draft NPDES Permit Permit No. NC0023353 White Lake WWTP Bladen County A draft copy of NPDES permit NC0023353 is attached to this letter for your review and comment. Please review the draft carefully to ensure thorough understanding of the permit conditions. Please be advised that the following changes have been incorporated into the permit renewal: - ➢ Your expiration date for this permit has been changed to January 31, 2012. > A daily maximum total residual chlorine (TRC) limit has been added to this permit, and will become effective 18 months after the permit effective date. This time period is allowed in order for the facility to budget and design/construct a dechlorination unit or alternative disinfection'unit . Refer to attached TRC Memo. Submit any comments to me no later than thirty days following your receipt of the draft. Comments should be sent to the address listed at the bottom of this page. If no adverse comments are received from the public or from you, this permit will likely be issued within two months. If you have any questions or comments concerning this draft permit, contact me at 919-733-5083 Ext. 520. Sincerely, Frances Candelaria NPDES Unit cc: NPDES Unit Fayettedille-Regi—d at-Office/Surface Water Protecriorp North Carolina Division of Water Quality (919) 733-5083, Ext.510 1617 Mail Service Center FAX (919) 733-0719 Raleigh, North Carolina 27699-1617, On the Internet at http://h2o.enr.state.nc.us/ Permit NC0023353 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, the Town of White Lake is hereby authorized to discharge wastewater: from a facility located at the White Lake WWTP NCSR 1515.,_._. Bladen County to receiving waters designated as an unnamed tributary to Colly 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 Month XX, XXXX. This permit and authorization to discharge shall expire at midnight on January 31, 2012. Signed this day. Alan W. Klimek, P.E.; Director, Division of Water Quality By Authority of the Environmental Management Commission 7 • Permit NC0023353 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 underthe permit conditions, requirements, terms, and provisions included herein. The Town of White Lake is hereby authorized to: 1. Continue to operate an existing 0.8 MGD wastewater treatment facility with the following components: • Bar screen • Vortex grit removal chamber • Effluent meter • Two floating aerator units • Chlorine/dechlorination contact chamber • Chart recorder • Vacuum regulators and gages • Backup generator This facility is located near White Lake off NCSR 1515 at the White Lake WWTP in Bladen County. 2. Discharge from said treatment works at the location specified on the attached map into an unnamed tributary to Colly Creek, classified C-Swamp waters in the Cape Fear River Basin. • ��,s -` _._. • - • I r Sandpits z. a� `�� 0 -i`i 7us • . - i5--1 ,Radio -- l\ [Tower Norris m,`' B .\ '� ,_—�` 1 • '� 1 • I is 1 81 I '/ ``\ \p� • ^- . •• X ♦\\\ L BM M CS j •:d1 0 - BM 82 Dyson •Cem • . Cem a . - • .._.,..---. —) : 76. \„......_______"? • ' �1 White Lake - - • -• ea 1 \ , p....:::7.::::":. I / • � Sewage - Disposal .BMf9 ' \Pond . `� W _ _c�' `_ __ -r -.N-- _ — -: — ��• � — :: • ' •`, �1: • • =- .— :, -- ,Y _.`- = r- _ . ' Town of White Bladen County Map I25NW Lake WWTP•�. �/ • Latitude: 34 38'10"NC0023353 Longitude: °20'30" White Lake WWTP Cl Stream Class: C-Swamp1;" Facility 3 ,s s u xk• Location Subbasin: 30620 . USGS Quad: White Lake, N.C. Receiving Stream: UT Colly Creek _. North 1 . SCALE 1.24000 ' Permit NC0023353 A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below •.EFFLUENT•y: - - . " CHARACTERISTICS '..' ; LIMITS :-. MONITORING REQUIREMENTS MonthlyWeekly"Measurement . Average _ . Average . :Frequency`•' , Sample'T p e_:. :1.. Sample Location`''''" Flow 0.8 MGD Continuous Recording Influent or Effluent BOD, 5-day (20°C) 2 30.0 mg/L 45.0 mg/L Weekly Composite Effluent Total Suspended Solids 90.0 mg/L 135.0 mg/L Weekly Composite Effluent NH3 as N Weekly Composite Effluent Dissolved 0xygen3 Weekly Grab Effluent, Upstream & Downstream Fecal Coliform (geometric mean) 200 / 100 ml 400/100 ml Weekly Grab Effluent Total Residual Chlorines 17 µgIL 21Week Grab Effluent Temperature (°C) Weekly Grab _ Effluent, Upstream & Downstream - Total Nitrogen (NO2+NO3+TKN) Quarterly Composite Effluent Total Phosphorus Quarterly Composite Effluent pH4 Weekly Grab Effluent Footnotes: - 1. Upstream = at NC Highway 41 on CollyCreek. Downstream = at least 100 feet downstream from the outfall or at the mouth of the canal. Instream samples shall be collected weekly from April 1 through October 31 and monthly from November 1 through March 31. 2. The monthly average effluent BOD5 concentration shall not exceed 35% of the respective influent value (65% removal). 3. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 rng/L. 4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. 5. The TRC limit will become effective on July 1, 2008 (18 months after the permit effective date), while monitoring is required beginning on the permit effective date. There shall be no discharge of floating solids or visible foam in other than trace amounts. A. (2.) PERMIT RE -OPENER: SUPPLEMENTARY NUTRIENT MONITORING Pursuant to N.C. General Statutes Section 143-215.1 and the implementing rules found in Title 15A of the North Carolina Administrative Code, Subchapter 02H, specifically, 15A NCAC 02H.0112(b)(1) and 02H.0114(a), and Part II, Sections B.12. and B.13. of this Permit, the Director of DWQ 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. TO: ATA .NCDENR NPDES Unit Staff Michael F. Easley Govemor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E., Director Division of Water Quality June 19, 2003 FROM:. David A. Goodrich �6:( NPDES Unit Supervisor SUBJECT: Total Residual Chlorine Policy for NPDES permits Every three years the State is required by the Clean Water Act to review its surface water quality standards and classifications, determine if changes are needed and to make any necessary changes. This review process is referred to as the "triennial review." Public hearings were held to solicit comments for the 2000-2003 Triennial Review of surface water quality standards during the summer of 2002. The Hearing Officer's recommendations were presented before the state's Environmental Management Commission on October 10, 2002. The Hearing Officer's recommended changes included modifications to the existing standards for Arsenic, Cyanide, Methylene Blue Active Substances (MBAS) and Total Residual Chlorine (TRC). The Hearing Officer also recommended the addition of a standard for Methyl Tert-Butyl Ether (MTBE). ' • - All of the Hearing Officer's proposed changes were adopted with the exception of MTBE. The changes took effect - on April 1, 2003. This memo documents the changes to the NPDES permitting policy for TRC limits. Total Residual Chlorine (TRC) Previously, TRC had an Action Level Standard, except in designated Trout waters. The Triennial Review changes modified the TRC Action Level Standard to an Aquatic Life Standard of 17 µg/L. The Aquatic Life Standard will remain for designated Trout waters. Aquatic Life Standard 17 µg/L (freshwater only) Trout Waters —17 µg/L Revised TRC Policy TRC limits will be assigned to permit renewals and all new permits issued after April 1,-2003., > Facilities that do not use chlorine will not receive a TRC limit; however, the presence of a chlorine back-up system to augment UV or other disinfection requires a TRC limit. • -• . •• - ➢ Facilities discharging to streams with a 7Q10 <0.05 cfs (zero -flow streams) will receive a limit of 17 µg/L. > Limits will be capped at 28 µg/L to protect against acute impacts. It is likely that many facilities will need to add .dechlorination (or use another means of disinfection) to comply with the new TRC standard. Therefore, a compliance schedule of 18 months from the effective date of the permit may be added to any TRC limit added during' the current permit renewal. This time period is allowed in order for the - facility to budget and design/construct the dechlorination and/or alternative disinfection systern(s). The NPDES Unit has promulgated minimum design criteria in order to expedite permitting of dechlorination equipment. cc: Coleen Sullins Regional Office Supervisors (Dechlorination guidance attached) Shannon Langley • ORIGINAL