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Home My WebLink AboutNC0039578_PERMIT ISSUANCE_20130509NPDES DOCUMENT SCANNINO COVER SHEET NPDES Permit: NC0039578 TWSA WWTP #1 Document Type: ;`Permit Issuance ' Wasteload Allocation Authorization to Construct (AtC) Permit Modification Complete File - Historical Correspondence Instream Assessment (67b) Environmental Assessment (EA) Permit History Document Date: May 9, 2013 This document is Printed on reuse paper - ignore any content on the reverse side • er r NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Pat McCrory Charles Wakild, P. E. Governor Director May 9, 2013 Mr. Stan Bryson, Wastewater plant Operations Superintendent Tuckaseigee Water and Sewer Authority 1246 West Main St. Sylva, NC 28779 Dear Mr. Bryson: John E. Skvarla, III Secretary Subject: Final NPDES Permit Renewal Permit NCO039578 Jackson County Class III Facility Division personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are forwarding the attached NPDES discharge 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 U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). The following modifications in the March 12, 2013 draft are included in the final permit: • The mercury limit was removed from the permit. The additional information that was submitted with your comments demonstrates five years of mercury monitoring with no exceedances of the TBEL. If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such a demand is made, this permit shall be final and binding. Please take notice that this permit is not transferable. The Division may require modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain other permits, which may be required by the Division 1617 Mail Service Center, Ralegh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: 919-807-63001 FAX: 919-807-6492 Internal: www.ncwatemuality ora An Equal Opponun41 Afinnatwe Action Employer NorthCarolina Naturally Tuckaseigee Water and Sewer Authority May 9, 2013 Page 2 of 2 of Water Quality, or permits required by the Division of Land Resources, Coastal Area Management Act, or any other Federal or Local governmental permits may be required. If you have any questions or need additional information, please contact Ms. Teresa Rodriguez at telephone number (919) 807-6387. Sincerely, Charles Wakild, P.E. cc: NPDES Files Central Files EPA Region 4 Asheville Regional Office / Surface Water Protection Section (e-copy) Aquatic Toxicology Unit (e-copy) Permit NCO039578 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY 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, Tuckaseigee Water and Sewer Authority is hereby authorized to discharge wastewater from a facility located at the TWSA WWTP #1 River Road (NCSR 1359) South of Sylva Jackson County to receiving waters designated as the Tuckasegee River in the Little Tennessee 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, 2013. This permit and authorization to discharge shall expire at midnight on October 31, 2017. Signed this day May 9, 2013. 6��K Charles Wakild, P. E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit NC0039578 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. Tuckaseigee Water and Sewer Authority is hereby authorized to: 1. Continue to operate an existing 3.5-MGD wastewater treatment plant consisting of the following unit processes: • Mechanical bar screen • Aerated grit removal • Dual sequencing batch reactors • Dual post equalization basins • Chlorination • Dechlorination • Post aeration basin • Two aerobic digesters • Belt filter press • Sludge dryer system • Backup emergency generator The above facilities are located at the TWSA WWTP #1 on River Road (NCSR 1359), south of Sylva in Jackson County. 2. Discharge from said treatment works at the location specified on the attached map into the Tuckasegee River, which is classified C-Trout waters in the Little Tennessee River Basin. 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C-Trout not to scale North NPDES Permit No. NC0039578 JacksonCountv 63-14'21" W &Dlea ELQ- 06010203 ad: 1.iolermueaauRivaBasin Sub -Bad,: 04-04-02 Permit NCO039578 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: PARAMETER LIMITS MONITORING REQUIREMENTS Monthly Avera a Weekly Average Daily Maximum Measurement Frequency Sample Ty e Sample Location Flow 3.5 MGD Continuous Recording Influent Effluent BOD, 5-day (200C)' 30.0 mg/L 45.0 mg/L Daily Composite Influent & Effluent Total Suspended Solids' 30.0 mg/L 45.0 mg/L Daily Composite Influent & Effluent NH3 as N (April 1 — October 31 .9 224 m /L 35.0 m /L 9 Daily Composite Effluent NH3 as N (November 1 — March 31 Daily Composite Effluent Fecal Coliform (geometric mean 200 / 100 mL 400 / 100 mL Daily Grab Effluent Temperature (°C) Daily Grab Effluent Dissolved Oxygen Daily Grab Effluent pH > 6.0 and < 9.0 standard units Daily Grab Effluent Total Residual Chlorine2 28 µg/L Daily Grab Effluent Total Nitrogen NO2 + NO3 + TKN Quarterly Composite Effluent Total Phosphorus Quarterly Composite Effluent Total Copper3 Quarterly Composite Effluent Total Zinc3 Quarterly Composite Effluent Total Silveri Quarterly Composite Effluent Chronic Toxicity4 Quarterly Composite Effluent Scan Effluent Pollutant Monitor and Report Footnote 5 Footnote .5 Effluent Notes: 1. The monthly average effluent BOD5 and Total Suspended Solids (TSS) concentrations shall not exceed 15 percent of the respective influent value (85 percent removal). 2. The facility shall report all effluent TRC values reported by a NC certified laboratory including field certified. However, effluent values below 50 pg/ L will be treated as zero for compliance purposes. 3. Toxicant sampling should be conducted on the same date that chronic toxicity testing is performed. 4. See A. (3) for Whole Effluent Toxicity testing requirements. 5. The permittee shall perform three effluent pollutant scans during the term of this permit [see A. (4)]. There shall be no discharge of floating solids or foam visible in other than trace amounts. Permit NCO039578 A. (2) SPECIAL CONDITION FOR SEWER LINE CONNECTIONS Sewer lines serving more than one building, crossing property under separate ownership, or crossing rights of way, shall not be made tributary to the collection system serving this facility unless a permit for the construction and operation of the tributary line has been issued by the Division. A. (3) 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 3.5%. The permit holder shall perform at a minimum,guarlerlu 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 February, May, August and November. 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. If reporting pass/fail results using the parameter code TGP3B, DWQ Form AT-1 (original) is sent to the below address. If reporting Chronic Value results using the parameter code THP3B, DWQ Form AT-3 (original) is to be sent to the following address: NC DENR / DWQ /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, 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. Permit NC0039578 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 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 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, 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. Permit NCO039578 A. (4) 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: 2014, 2015, and 2016. 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) Trans-1,2-dichloroethylene Bis(2-chloroethyl) ether Chlorine (total residual, TRC) 1, 1 -dichloroethylene Bis (2-chloroisopropyl) ether Dissolved oxygen 1,2-dichloropropane Bis(2-ethylhexyl) phthalate Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether Kjeldahl nitrogen Ethylbenzene Butyl benzyl phthalate Oil and grease Methyl bromide 2-chloronaphthalene Phosphorus Methyl chloride 4-chlorophenyl phenyl ether Total dissolved solids Methylene chloride Chrysene Hardness 1,1,2,2-tetrachloroethane Di-n-butyl phthalate Antimony Tetrachloroethylene Di-n-octyl phthalate Arsenic Toluene Dibenzo(a,h)anthracene Beryllium 1, 1, 1 -trichloroethane 1,2-dichlorobenzene Cadmium 1,1,2-trichloroethane 1,3-dichlorobenzene Chromium Trichloroethylene 1,4-dichlorobenzene Copper Vinyl chloride 3,3-dichlorobenzidine Lead Acid -extractable compounds: Diethyl phthalate Mercury (EPA Method 1631E) P-chloro-m-cresol Dimethyl phthalate Nickel 2-chlorophenol 2,4-dinitrotoluene Selenium 2,4-dichlorophenol 2,6-dinitrotoluene Silver 2,4-dimethylphenol 1,2-diphenylhydrazine Thallium 4,6-dinitro-o-cresol Fluoranthene Zinc 2,4-dinitrophenol Fluorene Cyanide 2-nitrophenol Hexachlorobenzene Total phenolic compounds 4-nitrophenol Hexachlorobutadiene Volatile organic compounds: Pentachlorophenol Hexachlorocyclo-pentadiene Acrolein Phenol Hexachloroethane Acrylonitrile 2,4,6-trichlorophenol Indeno(1,2,3-cd)pyrene Benzene Base -neutral compounds: Isophorone Bromoform Acenaphthene Naphthalene Carbon tetrachloride Acenaphthylene Nitrobenzene Chlorobenzene Anthracene N-nitrosodi-n-propylamine Chlorodibromomethane Benzidine N-nitrosodimethylamine Chloroethane Benzo(a)anthracene N-nitrosodiphenylamine 2-chloroethylvinylether Benzo(a)pyrene Phenanthrene Chloroform 3,4 benzofluoranthene Pyrene Dichlorobromomethane Benzo(ghi)perylene 1,2,4-trichlorobenzene 1,1-dichloroethane Benzo(k)fluoranthene 1,2-dichloroethane Bis(2-chloroethoxy) methane Reporting: Test results shall be reported on DWQ Form -A MR-PPA1 (or in a form approved by the Director) by December 31-t of each designated sampling year. The report shall be submitted to the Permit NCO039578 following address: NC DENR / DWQ / Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. A. (5) Mercury Minimization Plan (MMP) The permittee will develop and implement a mercury minimization plan during the term of this permit. The MMP shall be developed 180 days from the effective day of the permit, 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 (http://portal.ncdenr.org/web/wq/`swp/ps/npdes, under 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. Tuckaseigee Water & Sewer Authority Serving Jackson County 1246 West Main Street Sylva, NC 28779 Ph. (828) 586-5189 April 12, 2013 Fax (828) 631-9089 Attn: Teresa Rodriguez NPDES Program NCDENR/DWQ 1617 Mail Service Center Raleigh NC 27699-1617 Subject: Mercury Limit/Mercury Management Plan Permit # NC0039578 TWSA Plant #1 Jackson County Dear Ms Rodriguez, The TWSA is in receipt of the draft permit for our TWSA I proposed mercury limit and the development of a mercury to make the following comments. A review of the data shows that one relatively high mercury level (159 ng/I) was reported in 2008. The analysis since then have been as follows: (2009- 14.4 ng/1), (2010- 6.7 ng/1), (2011- 14.6 ng/1), (2012- < 0.50 ng/1) and 2013- 4.35 ng/I. These five most recent analysis results in an average of 8.1 ng/l. A review of the data submitted in the 2007 permit renewal shows an avg concentration of 5 ng/I of mercury. Given this data, it would seem that the analysis obtained in 2008 was uncharacteristic of the effluent and given the low levels of mercury in the most recent analysis, 1 submit that a limit is not needed. Additionally, with these low levels it would be difficult to implement an MMP and to quantify any reduction in total mercury discharged. The TWSA respectfully submits that the mercury limit and the MMP requirement be dropped from the proposed permit. Sincerel (�y� Stan Bryson Wastewater Plant Operations Superintendent Tuckaseigee Water and Sewer Authority IP I �nD l� f�l� W N xc: Mr Dan Harbaugh, Executive Director, TWSA w -- 7 � 1/ North ASI-IEVI= CITIZEN TIMES VOICE OF T11E MOUNTAINS • GrIZEN-TIMES.com AFFIDAVIT OF PUBLICATION BUNCOMBE COUNTY SS. NORTH CAROLINA Before the undersigned, a Notary Public of said County and State, duly commissioned, qualified and authorized by law to administer oaths, personally appeared Velene Fagan, who, being first duly sworn, deposes and says: that she is the Legal Billing Clerk of The Asheville Citizen -Times, engaged in publication of a newspaper known as The Asheville Citizen -Times, published, issued, and entered as first class mail in the City of Asheville, in said County and State; that she is authorized to make this affidavit and sworn statement; that the notice or other legal advertisement, a true copy of which is attached hereto, was published in The Asheville Citizen -Times on the following date: March 17"i, 2013. And that the said = newspaper in which said notice, paper, document or legal advertisement was published was, at the time of each and every publication, a newspaper meeting all of the requirements and qualifications of Section 1-597 of the General Statues of North Carolina and was a qualified newspaper within the meaning of Section 1-597 of the General Statues of North Carolina. Signed this 18"i, day of March. 2013 Sworn to and subscribed before me the 18°i day of March, 2013, _ My Co+ission expires the 51h day of October, 20 ,Y iv:) I riot Y (828) 232-5830 1 (828) 253-5092 FAX 14 0. HENRY AVE. I P.O. BOX 2090 1 ASHEVILLE, NC 28802 1 (800) 800-4204-� PUBLIC ¢) GAmErr DENR/DWQ FACT SHEET FOR NPDES PERMIT DEVELOPMENT NPDES No. NCO039578 Facility Information Applicant/Facility Name:' Tuckaseigee Water and Sewer Authority/Plant #I Applicant Address: 1246 West Main Street, S Iva, NC 28779 Facility Address: 1871 North River Rd., S Iva, NC 28779 Permitted Flow 3.5 MGD Type of Waste: 100 % domestic Facility/Permit Status: Class III/Renewal County: Jackson Miscellaneous Receiving Stream: Tuckasegee River Regional Office: Ashville Stream Classification: C; Tr State Grid / USGS Quad: F6SW, S Iva South 303(d) Listed?.. Yes Permit Writer: Teresa Rodriguez FIUC: 06010203 Date: Drainage Area (mi2): 286 I,at. 35° 20' S9" N Long. 83° 14' 21" W - Summer 7Q10 (cfs) 149.6 Winter 7Q10_(cfs) 184.1 Average Flow (cfs): 635 30Q2 cfs : 273.9 IWC,(%): 3.5 SUMMARY The Tuckaseigee Water and Sewer Authority (TWSA) currently operates a Class III WWTP with a permitted flow of 3.5 MGD. The plant was upgraded from 1.5 MGD to 3.5 MGD in 2011. The existing 3.5 MGD WWTP consists of: mechanical bar screen, aerated grit removal system, sequencing batch reactors (SBR), dual post equalization basins, chlorine contact basin with chlorine gas chlorination system, sulfur dioxide gas dechlorination system, post aeration basin, effluent Parshall flume, two aerobic digesters, belt filter press, sludge dryer system and emergency generaor. The facility was under SOC from 2005 to February 2012 with relaxed limits for BOD, TSS and fecal coliform. The facility has no violation of permit limits since the SOC expired. The Town submitted a renewal application on September 20, 2010. Form 2-A was used. The permit application was deemed complete. RECEIVING STREAM This facility discharges to Tuckasegee River in the Little Tennessee River Basin, classified C - Trout waters, HUC 06010203. This segment of the Tuckasegee River is impaired for fecal coliform from Savanah Creek to a UT 0.3 miles upstream of Yellow Bird Creek. The permit includes fecal coliform limits. Fact Shect NPDES NC0039578 Permit Renewal Page I DMR DATA REVIEW AND VEFIFICATION OF EXISTING CONDITIONS The permit includes limits for BOD, TSS, NH3N (summer only), Fecal Coliform TRC, pH, effluent toxicity (Chronic, Pass/Fail, 3.5%) and requires monitoring for Total Nitrogen, Total Phosphorus, Temperature, NH3N (winter), Cadmium, Copper, Silver, Zinc and Priority Pollutants. DMR data after the expiration of the SOC (2/2012) were reviewed for permit compliance. There has been no limits violations since March 2012. Table 1. Data Summary .,Flow,, : BOD' TSS± Fecal Coliform 'Ammonia TRC rTemp ,aTN (MGD) :(mg/1) ' (mg/L) /100 ml (mg/I) (Ng/1) :. (C°) mg/!' mg/I Average 0.763 11.2 7.2 17 4.3 < 20 19.7 16.6 1.85 Max 1.541 49.4 27.2 6000 27 38 26.3 30.5 3.6 Reasonable Potential Analysis: A reasonable potential analysis was performed for copper, zinc and silver. See attached RPA table for results and monitoring changes recommendations. Instream Monitoring: The permit does not require instream monitoring. Priority Pollutant Analysis (PPAI: The application includes the results of four priority pollutant analyses. Cyanide, mercury, zinc, copper and total phenolic compounds were detected in the PPA. These parameters were detected below allowable concentrations. Among the organic volatile compounds chloroethane was detected. There is no state or EPA criterion for chloroethane. Mercury Evaluation: A mercury evaluation was conducted in accordance with the Permitting Guidance developed for the implementation of the statewide Mercury TMDL to determine the need for a limit and Mercury Minimization Plan (MMP). The current permit did not require mercury monitoring. The application included data for mercury based on 4 PPAs. The average concentration reported was 47 ng/1 and the maximum concentration was 159 ng/l. Based on dilution the allowable concentration for mercury is 341 ng/l. Neither the maximum nor the average is greater than the calculated allowable concentration based on dilution (WQBEL). The maximum concentration detected is greater than the TBEL of 47 ng/l, therefore a TBEL of 47 ng/1 will be added to the permit. The limit will be effective one year before the permit expires. Facilities requiring a permit limit and discharging above 2 MGD are required to implement a MMP. The permittee has 180 days after the permit issued to develop the MMP. Aquatic Toxicity Testing Permit requires chronic toxicity, ceriodaphnia dubia, 3.5 %, the months of February, May, August, and November. The facility consistently passed the toxicity tests. Limits and Monitoring Requirements Current limits and monitoring conditions, as well as the basis for the limits are summarized in Table 2. Fact Sheet NPDES NC0039578 Permit Renewal Page 2 Table 2. Current Limits and Proposed Changes Parameter,,. Current Lim -it, Basis _ ' , , Proposed changes BOD/TSS 30/45 mg/I Secondary treatment limits No change monthly/weekly 15A 2B .0400 Fecal Coliform 200/400 ADD ml WQBEL, 15A NCAC 2B No change monthly/weekly .0200 TRC 28 µg/I daily max WQBEL, 15A NCAC 2B No change .0200 Ammonia 22.4/35 mg DWQ policy, Ammonia No change monthly/weekly toxicity (summer only) pH >6 and <9 SU WQBEL, 15A NCAC 2B No change .0200 Temperature Daily monitoring DWQ policy No change Chronic Toxicity P/F at 3.5% DWQ policy No change Total Nitrogen Quarterly DWQ policy No change monitoring Total Quarterly DWQ policy No change Phosphorus monitoring Total Copper Quarterly State WQ standards, T15A No change monitoring 213 .0200 and DWQ policy Total Zinc Quarterly State WQ standards No change monitoring Total Silver Quarterly State WQ standards No change monitoring Total Mercury 47 ng/I annual TBEL, MercuryTMDL Add limit based on MercuryTMDL limit implementation plan Priority Annual 40 CFR 122 Sampling frequency modified to Pollutant Scan three scans WQBEL —Water Quality Based Effluent Limit TBEL — Technology Based Effluent Limit PROPOSED CHANGES Eliminate effluent page for 1.5 MGD. The facility started operating the 3.5 MGD plant in 2011. Add an annual TBEL limit for mercury of 47 ng/L This limit will be effective in the last year of the permit. Add a special condition to the permit with the requirement for a MMP. PROPOSED SCHEDULE FOR PERMIT ISSUANCE Draft Permit to Public Notice: March 12, 2013 Permit Scheduled to Issue: May 6, 2013 FactShect NPDES NCO039778 Permit Renewal Page 3 NPDES DIVISION CONTACT If you have questions regarding any of the above information or on the attached permit, please contact Teresa Rodriguez at 919-807-6387. NAME: ��C�DATE: 5 1"%13 REGIONAL OFFICE COMMENTS TE: SUPERVISOR: DATE: Fact Sheet NPDF.S NCO039578 Permit Renewal Page 4 TWSA REASONABLE POTENTIAL ANALYSIS Outfall 001 NC0039578 Qw = 3.5 MGD Qw (MCD)= IQ I OS(efs)= 7QI OS (cfs)= 7QIOW (cfs)— 30Q2 (cfs) _ Avg. Stream Flow, QA (cfs)= Receiving Stream: 3.50 W WTP/WTP Class: III 121.28 IWC a IQIOS = 4.28% 149.00 IWC n 7QIOS= 3.51% 184.00 IWC(3a 7Q10W= 2.86% 2.00 IWC@30Q2= 73.06% 273.00 IWC@QA= 1.95% Tuscl aseigee River Stream Class: c Tr CHRONIC TEST CONCENTRATION = 3.5 PARAMETER STANDARDS & CRITERIA (2) N REASONABLE POTENTIAL RESULTS RECOMMENDED ACTION TYPE (1) NC WQS / Applied Y2 FAV / a q De[. Max Pred Allowable Cw Chronic Standard Acute ❑ Cw Acute: 170.6 No change Copper (AL) NC 7 FW(7QIOs) 7.3 ug/L 21 20 115 ___ _ _ _ __ _ _ _ __ _ _ ___ _ __ Chronic: 199.4 _ No value > Allowable Cr - Acute: 28738 No change - Slwer(Ay NC 0.06 FW(7QIOs) 1.23 ug/L 27 0 3.175 _ _ _ _ _ — --Chronic. _ - ____ ---- ------------ ---- 1,709 ' 26 value(s)> Allowable Cw - Acute: 1,565.4 No cahnge Zinc (AL) NC 50 FW(7QIOs) 67 ug/L 21 21 270.3 _ _ _ _ ___ _ --- - _ _ - _ -- _ _ ---'. -- --_ - — __ Chronic: No value> Allowable Cw Acute: 0 0 N/A _ —_—_-_—_—_—_—_—_—___—___— _—Chronic:— Acute'. - - -. 0 0 N/A Acute: - 0 0 N/A - _—_-_—_-_—_—_—_,—_—_—_—____ Chronic: Acute: ---- — Chronic:-------- "-_ ---- 39578 RPA 2013.xism, rpa Page 1 of 1 3/11/2013 REASONABLE POTENTIAL ANALYSIS 9 Copper (AL) 17 Silver (AL) 18 Zinc (AL) Date Data BDL=I/2DL Results s • Data Dala BDL=II2DL Results • • Data BDL=1/2DL Results 1 12.7 12.7 Std Dev. 9.1651 _ _ 1 ` '- ` _ < { `5' 2.5 Sid Dev. 0.4330 __Date _ 1 - - - 80.9 80.9 Sid Dev. 28.6076 2 - ` 10.1 10.1 Mean 11,9262 2,- <'. ,, ;5 2.5 Mean 24167 21=' -- 122, 122 Mean 88.9190 3- "9.7 9.7 C.V. 0.7685 3-. <' 5 2.5 C.V. 0.1792 3 _ 80. 80 C.V. 03217 4 7.9 7.9 n 21 4: 5. 2.5 n 27 4;` 82.9 82.9 n 21 5_.. ` .. 9.2 9.2 51. - c' -51 2.5 5;':.- .., `-.75' 75 fi '17 11 Mull Factor = 2.73 6" 5, 2.5 Mull Factor = 1.27 6 95! 95 Mull Factor = 1.59 7 - - 13.5 13.5 Max. Value 42.3 ug/L 7 - 5'. 2.5 Max. Value 2.500 ug/L 7 •.-- -94.5' 94.5 Max. Value 170.0 ug/L 8 10.4 10.4 Max. Fred Cw 115.5 ug/L 8- . 5. 2.5 Max. Fred Cw 3.175 ug/L 8 81.4: 81.4 Max. Pred Cw 270.3 ug/L 9 < ` 0.5 0.25 9- S 2.5 9--- == 55.4'I 55 4 10 9.2 9.2 _ 10 -: - 5 2.5 10. 56.2' 56,2 11 31.7' 31.7 _ 11 ':..- '< -5:: 2.5 11' -> 95.9 -` 95.9 12 . ' "' 42.3 42.3 12 - c "' 5' 2.5 12 137. 137 13 5.2 5.2 13 5 2.5 13 "" 70.7 70.7 14 17.7 173 14 ,. < 5: 2.5 14 - 91, 91 15 .. - 5.3 5.3 15 ... "'- - c " 0.5, 0.25 15 "'. .' 75.2' 75.2 16 - 6.4' 6.4 16 `... a 5 2.5 16 - 102 102 17 10.3 10.3 17 =° 5. 2,5 17r '' - s'89.2: 89.2 is- 8A 8.4 is.51 2.5 18 -' 34.6' 34.6 19 8.6 8.6 19 5 2.5 19 - 170 170 20 10.3 10.3 20 ' - 5 2.5 20 - 89.2. 89.2 21 "---10.3 10.3 21 -` - < 51 2.5 21-' '" .' - -89.2 89.2 22 - 22 - - 5' 2.5 22 23 - 23 < - 5' 2,5 23 24 24 '' _ 5 2.5 24'--'," 25 - 25 5 2.5 25-- 26 26 -- =- - 5' 2.5 26 27 27 2 5I 2.5 27 28 - _ 28 28"-: 29 - 29. 29 - 32 32 32 - •' 33 .:. : ,. 33, v r 33 39578 RPA 2013.Asm, data 1 - 3/11/2013 2012 North Carolina 303(d) List -Category 5 Little Tennessee River Basm' x 10-digit Watershed- ' ,0601020204Alarka,Creek-Little Tennessee.'River, >.AU.Number... Name._ - Description =,.- ". _ - .Length or. Area Units_ Classification Category Category Rating Use Reason for Rating Parameter Year > 2-27-1 lotla Branch From source to lotla Creek 2.4 FW Miles C 5 5 Impaired Recreation Standard Violation Fecal Coliform (recreation) 2012 12-digit.Subwatershed 060102020404 Tellico Creek -Little Tennessee Riw - `- > 2-33 Bradley Creek From source to Little Tennessee River 3.7 FW Miles C;Tr 5 5 Impaired Recreation Standard Violation Fecal Coliform (recreation) 2012 > 2-40b Tellico Creek From 100 m downstream of Sugar Cove Creek to Teague Creek 1.0 FW Miles C;Tr 5 5 Impaired Aquatic Life Fair Bioclassification Ecological/biological Integrity Benthos 2012 Little Tennessee River Basin 8-digit Subbasin 06010203. Tuckasegee River nnessee River Basin 10 cligit Watershed 0601020303 :`, '' . Middle Tuckasegee"River 12-digit Subwatershed 060102030304�M Conley Creek-Tuckasegee Rive > 2-79-(38) Tuckasegee River From Dillsboro Dam to Mack Town Branch 0.7 FW Miles C 5 5 Impaired Recreation Standard Violation Fecal Coliform (recreation) 2008 " - 12-digitSubwatershed " ° ". 060102030302 ` - ' - ' ' "' - `` "' Headwaters Scott Creel - > 2-79-39-5-1 Sugarloaf Creek From source to Soapstone Creek 1.8 FW Miles C 5 5 Impaired Aquatic Life Fair Bioclassification Ecological/biological Integrity Benthos 2010 12-digit,Subwatershed ^ - d 060102030301 ,, _ ';' '_ ,, .. Savannah Creek > 2-79-36 Savannah Creek From source to Tuckasegee River 13.4 FW Miles C;Tr 5 5 Impaired Recreation Standard Violation Fecal Coliform (recreation) 2008 12-digit:Subwatershed 060102030303 - - Scott Creek-Tuckasegee Rive " , > 2-79-(35.5)a Tuckasegee River From Savannah Creek to UT 0.3 miles upstream of Yellow Bird Creek 1.4 FW Miles C;Tr 5 5 Impaired Recreation Standard Violation Fecal Coliform (recreation) 2008 Friday, August 24, 2012 Approved by EPA August 10, 2012 Page 49 of 170 2012 North Carolina 303(d) List -Category 5 Tennessee Rive -Basin : 10-digit Watershed 0601020303 >*` MiddleTuckasegee River-, YUM611 -- Name . •'- . } v� Description " _ _ .' Length of Area nits _ Category ll 'Classification • C Category Rating Use Reason for Rating Parameter Year > 2-79-(35.5)b Tuckasegee River From LIT 0.3 miles upstream of yellow Bird Creek to Dillsboro Dam 0.5 FW Miles C;Tr 5 5 Impaired Recreation Standard Violation Fecal Coliform (recreation) 2008 > 2-79-39 Scott Creek From source to Tuckasegee River 15.3 FW Miles C;Tr 5 S Impaired Recreation Standard Violation Fecal Coliform (recreation) 2008 _ittleTennesseeRiver Basin 10=digit Watershed'_.-.0601020304- Lower Tuckasegee River' 12-digit 5ubwatershed "- 060102030405. - Fontana Lake-Tuckasegee Rive , > 2-(78)a Tuckasegee River Arm From Lemmons Creek to Peachtree Creek 170.6 FW Acres C 5 of Fontana Lake, Little Tennessee River, below elevation 1708 MSL 5 Impaired Recreation Standard Violation Fecal Coliform (recreation) 2008 Little Tennessee River Basin 8-digit Subbasirr 06010204' _ Lower Little Tennessee River Ate Tennessee Riverl3asln" 10-digit Watershed 0601020401 - Cheoah River - - �12-digitsubwatershed - 060102040106! - - - Santeetlah Lake > 2-190-(3.5) Cheoah River From the Town of Robbinsville's proposed water supply intake, to 1.4 FW Miles C;Tr 5 Mountain Creek 15 Impaired Aquatic Life Standard Violation Turbidity 2012 Lumber River Basin ~ 8-digit Subbasirr 03040203' �' Lumber River Lumber Rni'er Basin-' 10-digit Watershed 0304020304 .- _ Bear Swamp -Lumber River a 12-digit Subwatershed - - 030402030403 `�' -� - °' - MIWBranch-Lumber Rive > 14-6 Mill Branch From source to Lumber River 4.8 FW Miles C 5 5 Impaired Aquatic Life Fair Bioclassification Ecological/biological Integrity Benthos 2008 Friday, August 24, 2012 Approved by EPA August 10, 2012 Page 50 of 170