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HomeMy WebLinkAboutNC0077143_technical Correction_20100625North Carolina Beverly Eaves Perdue Governor Ms. Lisa Smith -Perri General Manager West Carteret Water Corporation P.O. Box 849 Newport, North Carolina 28570 r NCDENR Department of Environment and Division of Water Quality Colleen H. Sullins Director June 25, 20 10 SUBJECT: NPDES PERMIT CORRECTION West Carteret WTP Carteret County PERMIT NO: NCO077143 Dear Ms. Smith -Perri: Natural Resources Division staff has discovered an error on the Whole Effluent Toxicity Testing page of the above - referenced permit. It should have been monitoring only, with no limit. Dee Freeman Secretary While correcting the Toxicity language, the footnote 3 on A.(L) Effluent Limitations and Monitoring Requirements was corrected, and the flow limit was removed in accordance with our current Permitting Strategy for Water treatment Plants. Enclosed is the modified permit. Please note that the parameter code has been changed for reporting on DMRs. All other terms and conditions contained in the original permit remain unchanged and in full effect. This permit correction is issued pursuant to the requirements of North Carolina General Statutes 143-215.1 and the Memorandum of Agreement between North Carolina and the U. S. Environmental Protection Agency. These changes are considered Minor Modifications in accordance with 15A NCAC 02H .0114 (b) (7) and do not require a fee or public notice. If you have any questions or comments, please do not hesitate to contact Jim McKay at (919) 807- 6404, or by email at James.McKay@ncdenr.gov. Enclosure cc: Central rues NPDES Unit Files Wilmington Regional Office - via email Aquatic Toxicity / John Giorgino - via email 1617 Mail Service Center, Ralegh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Ralegh, North Carolina 27604 Phone: 919-807-63001 FAX: 91 M07-64921 Customer Service: 1-877-623-6748 Internet v .navatemualitv.om - An Equal Opportunity 1 Afirma6ve Action Employer NorthCarolina Naturally a Permit NCO077143 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 West Carteret Water Corporation is hereby authorized to discharge wastewater from a facility located at the West Carteret WTP 4104 NC Highway 24 Carteret County to receiving waters designated as the East Prong Sanders Creek in the White Oak 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 July 1, 2010. This permit and authorization to discharge shall expire at midnight on July 31, 2012. Signed this day June 25, 2010. jl en H. Sullins, Director vision of Water Quality By Authority of the Environmental Management Commission i Permit NCO077143 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. The West Carteret Water Corporation is hereby authorized to: 1. Continue to operate a drinking -water treatment plant with a discharge of color - removal and softener backwash wastewater. This facility is located east of the Bogue Community on NC Highway 24 at the West Carteret WTP in Carteret County. 2. Discharge from said treatment works located east of the bogue Community on NC Highway 24 at the West Carteret WTP in Carterest County, at the location specified on the attached map into the East Prong Sanders Creek, classified SA HQW waters in the White Oak River Basin. Quad: Salter Path, N.C. N C 0 0 7 71 4 3 Facility Latitude: 34°42'44" Location Longitude:76°59'26" West Carteret Water Corporation Stream Class: SA - HQW WTP Subbasin: 03-05-01 Receiving Stream: East Prong Sanders Creek O�Ott7t SCALE 1024000 r .l r +Permit .NCO077143 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 filter backwash from outfall 001. Such discharges shall be limited and monitored -by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING. REQUIREMENTS .. , . . Monthly Average Daily Maximum Measurement Frequency :.: Sample Type Sample Location Flow Weekly Estimate Effluent Temperature 1/Month Grab Effluent Salinity 1/Month Grab Effluent Conductivity 1/Month Grab Effluent Dissolved Oxygen 1/Month Grab Effluent Total Dissolved Solids 1/Month Grab Effluent Total Suspended Solids 20.0 mg/L 30.0 mg/L 2/Month Grab Effluent Total Copper 1/Month Composite Effluent Total Chloride 1/ Month Composite Effluent Total Iron 1/Month Composite Effluent Total Manganese 1/Month Composite Effluent Total Lead 1/Month Composite Effluent Total Zinc 1/Month Composite Effluent Ammonia Nitrogen 1/ Month Composite Effluent Total Nitrogen (TN) 1/Month Composlte Effluent Total Phosphorus (TP) 1/Month Composite Effluent pH1 2/Month Grab Effluent Total Residual Chlodne2 13 µg/L Weekly Grab Effluent Whole Effluent Toxicity3 Quarterly Composite Effluent Footnotes: 1. The pH shall not be less than 6.8 standard units nor greater than 8.5 standard units 2. The Division shall consider all effluent TRC values reported below 50 ug/ 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 ug/ 1. 3. Acute 24-hour Pass/Fail (Mysid Shrimp) at 90%; January, April, July and October; refer to Special Condition A (2). All samples collected should be from a representative discharge event. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. 1 4 I ° , . Permit NCO077143 A. (2.) ACUTE TOXICITY MONITORING (QUARTERLY) The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A Single Effluent Concentration" (Revised -July, 1992 or subsequent versions) . The monitoring shall be performed as a Mysid Shrimp (Mysidopsis Bahia) 24 hbur static test. The- effluent concentration at which there may be at no time significant acute mortality is 90% (defined as treatment two in the procedure document). Effluent samples for self -monitoring purposes must be obtained during representative effluent discharge below all waste treatment. The tests will be performed during the months of January, April, July, and October. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGE3E. Additionally, DWQ Form AT-2 (original) is to be sent to the following address: Attention: North Carolina Division of Water Quality Environmental Sciences Section 1621 Mail Service Center Raleigh, North Carolina 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in association with the toxicity tests, as well as all dose/response data. 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 domment 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, then monthly monitoring will begin immediately. Upon submission of a valid test, this monthly test requirement will revert to quarterly in the months specified above. Should any test data from either these monitoring requirements 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 then 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. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival 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.