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Home My WebLink AboutNC0025496_Permit (Modification)_20070302NPDES DOCUMENT SCANNING COVER SHEET isak ank ink 04 ears .4110, AIN ANIrk AIN NPDES Permit: NC0025496 Lincolnton WWTP Document Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) Permit Modification Complete File - Historical Other Speculative Limits Instream Assessment (67b) Environmental Assessment (EA) Permit History Document Date: March 2, 2007 This document is printed on reuse paper - igpciore any content on the reiterse side 01114 044 Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality March 2, 2007 Mr. James S. Rhyne City of Lincolnton P. O. Box 617 Lincolnton, NC 28093-0617 Subject: NPDES Permit Modification Permit Number NC0025496 City of Lincolnton WWTP Lincoln County Dear Mr. Rhyne: Division personnel have reviewed and approved your application for minor modification of the subject permit. Accordingly we are forwarding the attached modified permit pages. These pages should be inserted into your permit and the old ones discarded. This modification removes the effluent monitoring requirements for Aldrin, Dieldrin and 4,4 DDT. The lifting of these monitoring requirements was based upon the results of effluent sampling that indicated these compounds were not present at levels such they would be deemed parameters of concern. This modification also changes the effluent monitoring frequency for Total Silver from 2/month to quarterly. This change was based upon the results of effluent sampling conducted since the imposition of the 2/month monitoring frequency for the parameter with the latest permit renewal. All analyses have indicated no detection of silver in the effluent. Please note that quarterly monitoring for silver must be conducted during the same months when whole effluent toxicity testing is performed. Language has been modified regarding limits and monitoring for total residual chlorine and total antimony as a result of the passage of time, but the substance of those requirements remains the same as in the current permit. This modification 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 May 9, 1994 (or as subsequently amended). Now Carolina JVatura!!y North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone (919) 733-7015 Customer Service Internet: www.ncwaterquality.org Location: 512 N. Salisbury St. Raleigh, NC 27604 Fax (919) 733-2496 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper Mr. James S. Rhyne NC0025496 Modification, p. 2 March 2, 2007 Please note that this permit is not transferable except after notice to the Division. 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 of Water Quality or permits required by the Division of Land Resources, the 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 Bob Sledge at telephone number (919) 733-5083, extension 547. Sincerely, 4141. yAlan W. Klimek, P.E. �•o cc: Central Files Mooresville Regional Office/Surface Water Protection Section NPDES Unit EPA Region 4 Permit No. NC0025496 A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning on the effective date of the 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 1 CHARAGTERISTCS LIMITS - MONITORING REQUIREMENTS Monthly Average. _ Weekly �3 Average::: Daily - : Maximum Measurement Frequency . • Sample ; Type . Sample Locat!on 1 Flow 6.0 MGD Continuous Recording Influent or Effluent BODS 2 30.0 mg/L 45.0 mg/L Daily Composite Influent and Effluent Total Suspended Solids2 30.0 mg/L 45.0 mg/L Daily Composite Influent and Effluent NH3 as N 3/Week Composite Effluent Fecal Coliform 200/100 ml 400/100 ml Daily Grab Effluent pH3 Daily Grab Effluent Total Residual Chlorine4 28 pglL Daily Grab Effluent Temperature Daily Grab Effluent Conductivity Daily Grab Effluent Total Nitrogen (NO2 + NO3 + TKN) Monthly Composite Effluent Total Phosphorus • Monthly Composite Effluent Chronic Toxicity5 Quarterly Composite Effluent Total Cyanide6 22 jig/ Weekly Grab Effluent Phenols 21 Ng/L Weekly Grab • Effluent Total Copper 2/month Composite Effluent Total Silveri Quarterly Composite Effluent Total Zinc 2/month Composite Effluent Total Antimony8 52 pg/L Monthly Composite Effluent Color9 Monthly Composite Effluent Color (April 1 through October 31)10 Monthly Grab Upstream & Downstream Effluent Pollutant Scan See footnote 11 Footnotes on next page: Permit No. NC0025496 Notes: 1. Upstream = at least 100 feet upstream from the outfall. Downstream = at least 300 feet downstream from the outfall. 2. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85% removal). 3. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. 4. Requirement applies only if chlorine is added for disinfection. See A. (2). 5. Chronic Toxicity (Ceriodaphnia) P/F @ 11% with testing in March, June, September and December (see A. (3)) 6. The quantitation limit for cyanide shall be 10 pg/L (10 ppb). Levels reported less than 10 µg/L shall be considered zero for compliance purposes. 7. Monitoring for silver shall coincide with whole effluent toxicity monitoring (see note 5). 8. Monitoring requirement and limitation for total antimony may be deleted upon written notification from the permitting authority. 9. Color samples will be analyzed for ADMI color at natural pH. Samples will be analyzed by a state -certified laboratory (see A. (4) — Color Permitting Requirements). 10. Monitoring requirement may be deleted upon written notification from the permitting authority. 11. Effluent Pollutant Scan shall be conducted annually. Refer to Condition A. (5). There shall be no discharge of floating solids or visible foam in other than trace amounts. A. (2) Total Residual Chlorine The limit for total residual chlorine shall become effective upon completion of the installation of a disinfection system but no later than June 1, 2007. If a method different than chlorination/dechlorination is used, the total residual chlorine limit will not be applicable. NC0025496 City of Lincolnton Minor Permit Modification On January 9, 2007, the City of Lincolnton submitted a request for modification of the terms of its NPDES permit. Specifically, they asked that monitoring be dropped for the following parameters: Aldrin Dieldrin pesticides 4,4 DDT Total Silver The noted pesticides had been detected in Priority Pollutant Analyses submitted by the city prior to the issuance of the most recent permit renewal (November 2005). Monitoring was added to the permit because reasonable potential was shown, but the permit included provision for the facility to demonstrate these were not parameters of concern. Effluent monitoring data submitted since the effective date of the permit have shown no detection for these parameters. Therefore, the city's request has been granted and monitoring for Aldrin, Dieldrin and 4,4 DDT are removed from the permit. Effluent monitoring for Total Silver at 2/month was added in the November 2005 permit renewal because submitted data showed potential to exceed the action level for this parameter (0.06ug/L). Effluent data for Total Silver have shown no detection for the parameter since the effective date of the permit renewal. Additionally, the facility has passed each of its whole effluent toxicity tests during the same time period. However, the existing permit has no provision for the removal of monitoring for the parameter. Therefore, it is agreed that monitoring for Total Silver shall be reduced from 2/month to quarterly, with monitoring to be conducted at the same time whole effluent toxicity testing is performed. Because all reported values in the examined period of review indicated no detection of the parameters, no RPA was conducted as part of this permit modification. City of Lincolnton NC0025496 . Pesticides 12/05 -12/06 Month Day Year 39380 - Dieldrin 39300 - 4,4tDDT 39330 - Aldrin (ugll) (P,P-DDT) Iu9/L) (u9n-) 12 7 2005 <0.0050 <0.0050 <0.0050 1 11 2006 <0.0050 <0.0050 <0.0050 2 15 2006 <0.0050 <0.0050 <0.0050 3 29 2006 < 0.0050 < 0.0050 < 0.0050 4 19 2006 < 0.005 < 0.005 < 0.005 5 17 2006 <0.0050 <0.0050 <0.0050 6 6 2006 <.005 <.005 <.005 7 19 2006 < 0.0050 < 0.0050 < 0.0050 8 9 2006 <0.0050 <0.0050 <0.0050 9 20 2006 < 0.0050 < 0.0050 < 0.0050 10 4 2006 <0.0050 <0.0050 <0.0050 11 20 2006 <0.0050 <0.0050 <0.0050 12 13 2006 <0050 <0.0050 <0.0050 Pornit Veralo Facility County NC0025496 3.00 City of LIncdnton - I Lincoln NC0025490 3.00 City of Uncolnton • l Lincoln NC0025496 3.00 City of Llncolnton - l Lincoln NC0025408 3,00 City of LIncolnton - l Lincoln NC0025496 3.00 Giy o1 Uncolnton -1 Lincoln NC0025408 3.00 City of LIncdnton • l Lincoln NC0025496 3.00 City of Llncolnlon - l Lincoln NC0025486 3.00 City o1 Uncolnton -1 Lincoln NC0025496 3.00 City of Ulcotnon -1 Lincoln NC0025498 3.00 City of Uncolnton • l Lincoln NC0025408 3.00 City of LIncolnton • l Lincoln NC0025498 3.00 City of Llncolnton • l Lincoln NC0025498 3.00 City of Uncolnton - l Lincoln NC0025498 3.00 City o1 LIncointon - l Lincoln NC0025496 3.00 City of Lincolnton -1 Lincoln NC0025498 3.00 City of Uncolnlon -1 Lincoln NC0025496 3.00 City of Lincalnton -1 Lincoln NC0025496 3.00 City o1 Uncolnlon - t Uncoln NC0025498 3.00 City of Uncolnton - l Lincoln NC0025498 3.00 City of Uncolnton - l Lincoln NC0025498 3.00 City of Uncolnton -1 Uncoh NC0025496 3.00 City o1 Uncolnlon • t Lincoln NC0025496 3.00 City o1 Lincolnlon - l Lincoln NC0025496 3.00 City of Uncolnlon • t Lincoln NC0025496 3.00 City of LIncoMon - l Lincoln N00025496 3.00 City of Llncolnton • 1 Lincoln NC0025498 3.00 City of Llncolnton • l Lincoln NC0025490 3.00 City of Uncolnlon -1 Llnooln NC0025496 3.00 City of Uncolnton - l Lincoln NC0025496 3.00 City of Llncolnlon - l Lincoln N00025496 3.00 City o1 Lincolnton • l Lincoln NC0025496 3.00 City o1 Uncolnlon • 1 Lincoln NC0025498 3.00 City of Uncolnton - l Lincoln NC0025408 3.00 City of Uncolnlon - l Lincoln NC0025496 3.00 City of Uncolnton -1 Lincoln NC0025498 3.00 City of Lincotnton - l Lincoln NC0025498 3.00 City of LIncointon -1 Lincoln NC0025496 3.00 City of Uncolnton • t Lincoln NC0025496 3.00 City o1 Lincointon -I Lincoln NC0025496 3.00 City o1 Uncolnlon -1 Lincoln NC0025496 3.00 City of LincolnIon - t Lincoln NC0025498 3.00 Ciy o1 LIncohton - I Lincoln NC0025498 3.00 city of Llncointon -1 Lincoln NC0025496 3.00 City o1 Uncolnton - t Lincoln NC0025490 3.00 City o1 Uncolnton -1 Uncoln NC0025496 3.00 city of LIncolnton -1 Lincoln NC0025496 3.00 city of Uncolnton - I Lincoln Ilegion Outten Montt Day Year Comment Pruamotol Pruam Class Sample UoM Mooresville 001 1 21 2004 <2 01077 - Salvor, Total (as Ag) Metal Conposile ugA Mooresville 001 2 4 2004 3 01077 • Silver. Total (as Ag) Metal Composite u04 Mooresville 001 3 3 2004 <2 01077 - Silver, Tonal (as Ag) Metal Composite ug4 Mooresville 001 3 23 2004 <2 01077 - SINor, Total (as Ag) Metal Composite ug4 Mooresvilo 001 4 6 2004 <2 01077 -Silver, Total (as Ag) Metal Composite ugA Mooresville 001 5 12 2004 <2 01077 - Silver, Total (as Ag) Mote Conposito ugA Mooresville 001 8 9 2004 <2 01077 • Silver, Tonal (as Ag) Metal Conposlto ugA Mooresville 001 7 14 2004 <2 01077 - Silver, Total (as Ag) Metal Composite tad Mooresville 001 8 4 2004 <2 01077 -Silver, Total (as Ag) Metal Composite ugA Mooresvilo 001 0 15 2004 <2 01077 • Silver, Total (as Ag) Metal Composite ugrl Mooresville 001 10 8 2004 <2 01077 - Silver, Total (as A8) Metal Composite u94 Mooresville 001 11 17 2004<2 01077 -Silver, Teal (as Ag) Metal Conposite ugA Mooresville 001 12 15 2004 <2 01077 - SiNor. Total (as Ag) Metal Composite ugA Mooresville 001 I 12 2005 <2 01077 - Silver, Total (as Ag) Metal Conposilo ugA Mooresville 001 2 9 2005 <2 01077 - Silver, Total (as Ag) Metal Composite ugA Mooresville 001 3 9 2006 <2 01077 - Silver, Total (as Ag) Metal Conposite ug/ Mooresville 001 4 6 2005 <2 01077 -Silva. Total (ae Ag) Metal Composite tad Mooresvvile 001 6 11 2005 2 01077 - SiNor, Total (as Ag) Metal Composite ugA Mooresville 001 6 8 2005 <2 01077 - Silver, Total (as Ag) Mete Composite ugA Mooresville 001 7 13 2005 <2 01077 • Silver, Total (as Ag) Metal Composite tad Mooresville 001 8 10 2005 <2 01077 - Silver, Total (as Ag) Metal Composite ug4 Mooresville 001 9 14 2006 <2 01077 - Silvis. Total (as Ag) Mete Conposite WI Mooresville 001 10 5 2005 <2 01077 • Silver, Total (as Ag) Metal Composite ugA Mooresville 001 11 16 2005 <2 01077 • SiNor, Total (as Ag) Metal Composite ug4 Mooresvile 001 12 7 2005 <2 01077 - Silver, Total (as Ag) Mote Composite ugA Mooresville 001 12 21 2005 <2 01077 - Silver, Total (as Ag) Mete Conposito ug4 Mooresville 001 1 11 2008 <2 01077 - SiNor, Total (as Ag) Metal Conposite ug/1 Mooresvilo 001 1 25 2008 <2 01077 - Sliver. Told (as Ag) Metal Conposite ugA Mooresville 001 2 1 2006 <2 01077 - SiNer, Told (as Ag) Metal Composite tg4 Mooresville 001 2 15 2003 <2 0I077 • Silver, Total (as Ag) Metal Composite ugA Mooresvillo 001 3 1 2006 < 2 01077 • Silver, Total (as Ag) Metal Composite ugA Mooraavi le 001 3 29 2006 < 2 01077 - SiNor. Total (as Ag) Meted Corrpoeto ug4 Mooresville 001 4 5 2006 < 2 01077 - Silver, Total (as Ag) Motel Corrpoalte ugA Mooresville 001 4 19 2006 < 2 01077 -Silver. Total (as Ag) Metal Composite ugA Mooresville 001 5 3 2006 <5 01077 -Silver, Total (as Ag) Metal Composite ugA Mooresville, 001 5 17 2006 <5 01077 -Silver, Total (as Ag) Metal Composite ugA Mooresville 001 6 7 2006 <2 01077 -Silver. Total (as Ag) Metal Composite tad Mooresville 001 6 21 2006 <2 01077 - SiNOI, Total (as Ag) Metal Composite ug4 Mooresvillo 001 7 5 2006 < 2 01077 - SINot, Total (as Ag) Mete Composite ugil Mooresville 001 7 19 2008 <2 01077 -Silver. Total (as Ag) Metal Conposite ug4 Mooresvilo 001 8 9 2006 <5 01077 -Silver, Total (as Ag) Mete Composite tg4 Mooresville 001 9 8 2008 < 5 01077 -Silver, Tote (as Ag) Mete Composite ugA Mooresville 001 9 20 2008 <5 01077 - Silver, Total (as Ag) Metal Composite ug4 Mootesvile 001 10 4 2006 <5 01077 -Silver. Total (as Ag) Metal Composite ug/ Mooresville 001 10 18 2006 <5 01077 -Silver. Total (as Ag) Mete Composite 141 Mooresvillo 001 11 1 2006 <5 01077 • Silver, Total (as Ag) Mete Composite ugA Mooresville 001 11 15 2006 <5 01077 - SINot, Total (as Ag) Metal Composite ug4 Value Modlinr Cell Typo Loc Suhbasin LESSTHAN 2.8 LESSTHAN LESSTHAN LESSTHAN LESSTHAN LESSTHAN LESSTHAN LESSTHAN LESSTHAN LESSTHAN LESSTHAN LESS LESSTFW4 LESSTHAN LESSTHAN LESSTWW 2.3 LESSTHAN LESSTHAN LESSTHAN LESSTHAN LESSTHAN LESSTW W LESSTHAN DLYVALUE E8►a03-08.35 LESSTHAN DLWALUE E0tut 03-08-35 LESSTHAN DLWALUE Efflut 03-01V-35 1 I-S6THAN DLYVALUE Efllut 03-08.35 LESSTHAN OLWALUE Etats 03-08•35 LESSTHAN DLWALUE Efts 03-08-35 LESSTHAN DLWALUE EltIto 03.08.35 LESSTHAN DLWALUE Effluc 03-08-36 LESSTHAN DLWALUE EISa01-08-35 LESSTHAN DLYVALUE Eff ur 03.08.35 LESSTHAN DLWALUE Elks 03.08.35 LESSTHAN DLWALUE Plitt( 03-08-35 LESSTHAN DLWALUE EISa 03-08.35 LESSHAN DLYVALUE EBIut03-08.35 LESSTHAN DLWALUE OWE 03-08-35 LESSTHAN DLWALUE Ef0ut 03.08.35 LESSTHAN DLWALUE Eftlu(03.08.35 LESSTHAN DLYVALUE Etas 03.08.35 LESSTHAN DLWALUE Elilnt 03.08.35 LESSTHAN DLYVALUE E81ut03-08.35 LESSTHAN DLWALUE EMIR 03-08-35 LESSTHAN DLYVALUE EBIu(03.08.35 LESSTHAN DLWALUE Elttut 03.08.35 Whole Effluent Toxicity Testing Self -Monitoring Summary February 14, 2007 FACILITY REQUIREMENT YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Lake Rhodhlss - Valdese) WWTP chr lim: 4.8%; ifpf 10.5MGD chr lim 6.6% Ceri7dPF NC0041696/001 Begin 12/1/2006 Frequency Q Jan Apr Jul Oct + NonComp:Single County Burke Region: ARO Subbasin: CTB3 PF: 7.5 Special 7Q 10: 228.7 IWC(%) 4.8 Order: 2003 Pass(s) - Pass - Pass Pass - 2004 Passt - >19.2(p) >19.2(p)t >19.2(P) Pass Pass - - 2005 Pass - - Pass - - Pass - - Pass - - 2008 p - - pass - - pass - -- Pass - - 2007 Pass Lake Waccamaw WWTP chr lim: 90'/. Ceri7dPF 2003 >100 82.16 Pass - - Pass - - Pass - - Pass NC002188 1/001 Begin 7/12005 Frequency: Q Mar Jun Sep Dec + NonComp:Single 2004 - - Pass - - Pass - - Pass - - Pass County: Columbus Region: WIRO Subbasin: LUM56 2005 - - Pass - Pass - Pass - - Pass PF: 0.4 Special 2006 - - Pass - Pass --- - Pass - Pass 7Q10: 0.0 IWC(%) 100 Order: 2007 Laurinburg - Leith Creek WWTP chr lim: 31% Ceri7dPF 2003 - Pass - - Pass -- Pass - Pass NC0020656/001 Begin 11/12004 Frequency Q Feb May Aug Nov + NonComp:Single 2004 -- Pass>62(p) >82(p) Pass.>62(P)t - Pass - Pass County: Scotland Region: FRO Subbasin: LUM55 2005 -- Pass - Pass - Pass - Pass PF: 4.0 Special 2006 - Pass - Pass Pass - Fail 7Q10: 13.8 IWC(%) 31 Order: 2007 >100 10.96 Laurinburg Maxton Airport -Laurel Hill chr lim: 1.5% NC0005479/001 Begin 11/1/2004 Frequency Q Mar Jun Sep Dec County Scotland Region: FRO Subbasin: LUMSS PF: 0.3 Special 7Q10: 31.0 IWC(%) 1.5 Order: Ceri7dPF V 2003 -- Pass - Pass - Pass - Pass + NonComp:Single 2004 - - Pass - - Pass - Pass - - Pass 2005 - - Pass - - Pass - - Pass - Pass 2006 - - Pass - - Pass - - Pass - - Pass 2007 Laurinburg-Maxton Airport (LMAC) WWTP chr lim: 2.6% Ceri7dPF g 2003 - . Pau -- - Pass - - Pass -- Pass.>5.1(p) NC0044725/001 Begin 6/I2005 Frequency. Q Mar Jun Sep Dec - NonComp:Single 2004 1.84(p) - Pass.>5.2(p) - - Pass - - Pass - -- Pass County Scotland Region: FRO Subbasin: LUM51 2005 -- - Pass -- - Invalid Lato Pass Pass - - Pass PF: 2.0 Special 2006 -- - Pass - Pau - -- Pass --- Pass 7Q 10: 111.0 IWC(%) 2.72 Order: 2007 LCP Plastics, Inc. fathead 24h LC50 ac epis disc Ceri7dPF 2003 -- H H NC0036366/001 Begin 3/1/2003 Frequency: Q P/F + Feb May Aug Nov NonComp:Single 2004 -- H H County: Guilford Region: WSRO Subbasin: CPFO8 2005 -- H H PF: NA Special 2006 -- H H 7Q10: 0.00 IWC(%) 100 Omer: 2007 H H - H H H H H H H Lenoir- Gunpowder Creek WWTP chr lim: 52% Ceri7dPF 2003 - -- Pass - - Pass - - Pass - Pass NC0023736/001 Begin 1/12006 Frequency Q Mar Jun Sep Dec + NonComp:Single 2004 -- >100(p) Pass>100(p) -- - Pass,>100(P) >100(P) - Pass - Pass County. Caldwell Region: ARO Subbasin: CTB32 2005 - -- Pau -- - Pass - Pass - - Pass PF: 2.0 Special 2008 - - Pass - Pass --- Pass Pass 7Q 10: 3.0 RVC(%) 52.0 Order: 2007 Lenoir- Lower Creek WWTP chr lim: 44% Ceri7dPF 2003 -- Pass --- -- Pass - -- Pass - - Pass NC0023981/001 Begin 3/1/2005 Frequency: Q Feb May Aug Nov + NonComp: Single 2004 -- Pass>100(p) >100(p) Pass.>100(P) - <10(P) Pass - - Pass County: Caldwell Region: ARO Subbasin: CTB31 2005 -- Pass - Pass -- -- ' Pass - - Pass PF: 6.0 Special 2006 - Pass - Invalid Pass - Pass - Pass 7Q 10: 11.75 l WC(%) 44 Order: 2007 Lexington Regional WWTP Chr lim: 60% Ceri7dPF 8 2003 -- Pass - Fail 19.8,39.61' >90,39.6t Pass,39.6t 82.2 >90 Fail,>90(p) >90 NC0055786/001 Begin 11/I/2004 Frequency: Q Feb May Aug Nov + NonComp: SINGLE 2004 >90 >90(p),Pass >90(p) Pass -- - Pass - -- Pass County: Davidson Region: WSRO Subbasin: YADO7 2005 -- Pass - Pass - - Pass - Pass PF: 6.5 Special 2006 - pass - Pass - - Pass - - Pass 7Q10: 6.7 IWC(%) 60.06 Order: 2007 Lincolnton WWTP chr lim: III% Ceri7dPF 2003 - - Pass - - Pass - Pass - - Pass NC0025496/001 Begin 12/1/2005 Frequency. Q Mar Jun Sep Dec + NonComp:Single 2004 - - Pass.>40(p) >40(p) >40(P) Pass.>40(P) - - Fai >40 >40 Pass County: Lincoln Region: MRO Subbasin: CTB35 2005 - - Pass - - Pass - - Pass - - Pass PF: 6.0 Special 2006 - - Pass - - Pass - - Pass - Pass 7Q10: 77.0 1WC(%) 11.0 Order: 2007 Linville Resorts, Inc. Chr Lim: 10% Ceri7dPF 2003 Pass - - Pass - - Pass - - Pass NC0039446/001 Begin 9/12006 Frequency: Q Jan Apr Jul Oct - NonComp:Single 2004 Pass - - Pass - - Pass - - Pass County: Avery Region: ARO Subbasin: CTB30 2005 Pass - Pass - - Pass - Pass PF: 0.15 Special 2008 pass Pass - - Pass - - Invalid 7Q10: 2.1 1WC(%) 10.0 Order: 2007 It Pre 2003 Data Available LEGEND: PERM = Permit Requirement LET = Administrative Letter - Target Frequency = Monitoring frequency: Q- Quarterly; M- Monthly; BM- Bimonthly; SA- Semiannually; A- Annually; OWD- Only when discharging; D- Discontinued monitoring requirement Begin = First month required 7Q10 = Receiving stream low flow criterion (cfs) + = quarterly monitoring increases to monthly upon failure or NR Months that testing must occur - ex. Jan, Apr, Jul. Oct NonComp = Current Compliance Requirement PF = Permitted flow (MGD) IWC/. = Instream waste concentration P/F = Pass/Fail test AC = Acute CHR = Chronic Data Notation: f - Fathead Minnow; • • Ceriodaphnia sp.; my - Mysid shrimp; ChV - Chronic value; P - Mortality of stated percentage at highest concentration; at - Performed by DWQ Aquatic Tox Unit; bt - Bad test Reporting Notation: -- = Data not required; NR - Not reported Facility Activity Status: I - Inactive, N - Newly Issued(To construct); H - Active but not discharging; t-More data available for month in question; = ORC signature needed 26 CITY OF LINCOLNTON WASTEWATER TREATMENT PLANT January 9, 2007 Susan Wilson NC Division of Water Quality/NPDES Unit 1617 Mail Service Center Raleigh, NC 27699-1617 Dear Susan Wilson, The City of Lincolnton would like to formally request permit modifications to our current NPDES Permit, permit number NC0025496. The City of Lincolnton would like to request that effluent monitoring and the proposed permit limits for Aldrin, Dieldrin and 4,4 DDT be dropped from the NPDES permit. The City also requests that the effluent monitoring frequency for Silver be dropped from our NPDES permit. The City of Lincolnton has performed 12 monthly samples for Aldrin, Dieldrin and 4,4 DDT, beginning in December 2005, as required by our NPDES permit that became effective on December 1, 2005. All 12 of the monthly samples for Aldrin, Dieldrin and 4, 4 DDT resulted in being below detection level. An attached chart showing the dates of our sampling and the sampling results is included with this letter. These results were also reported on our monthly DMR reports submitted to Central Files. The cover letter with our NPDES Permit on Page 2 states that if Lincolnton can demonstrate that these pesticides are not pollutants of concern, that Lincolnton can request in writing the removal of these permit requirements. The City of Lincolnton hereby submits this letter as our demonstration and request to remove the permit requirements for Aldrin, Dieldrin and 4,4 DDT from our NPDES permit. The City of Lincolnton has performed 2 samples per month for 12 months, beginning in December 2005, for Silver. All 24 of the samples for Silver resulted i>being below detection level. An attached chart showing the date and result of each sample is included with this letter. The cover letter with our NPDES Permit states that if twelve months of data show all silver values below the detection level, the monitoring frequency can be reevaluated. The City of Lincolnton hereby submits this letter as our demonstration and request to reevaluate our Silver monitoring requirement. The City of Lincolnton requests that Silver monitoring be dropped from our NPDES permit. P.0, Box 617 • LINCOLNTON. NORTH CAROLINA 28093-0617 PHONE (704) 736-8960 • FAX (704) 732-6137 We appreciate your consideration of this matter. If you should have any questions or need any further information regarding this matter, please contact me at 704-736-8960. Sincerely, ,B. 7?Ara, James S. Rhyne Operator in Responsible Charge City of Lincolnton WWTP NPDES Permit Number NC0025496 Enclosure: (1) cc: Mike Parker, John Lesley, Don Garbrick Jeff Emory Steve Peeler Don Burkey Mooresville Regional Office Mooresville Regional Office Pease Associates City Manager City Director of Public Works and Permit Permittee Pretreatment Compliance technician CITY OF LINCOLNTON WWTP Effluent ALDRIN, DIELDRIN and 4,4 DDT Sample Results Aldrin (in pgll) Dieldrin (in pgll) 4,4 DDT (in pg/I) Sample Date 12/07/05 < 0.005 < 0.005 < 0.005 01/11/06:: ` <:0 005 :: < 0.005 " < 0.005 02/15/06 < 0.005 < 0.005 < 0.005 03/29l08::: w < 0.005; `_ :... < 0.005 '.:.:.... < 0.00_5 04/19/06 < 0.005 < 0.005 < 0.005 05117106�. : < 0005 <<0005 ` .:. < 0.005 06/06/06 < 0.005 < 0.005 < 0.005 0711:9106 ._ _ :: < 0•005 _ :: <:0005: '_ _ :_. .. <0.005._ 08/09/06 < 0.005 < 0.005 < 0.005 091201.6�_ :: :.< 0.00.5----_-- .: ;: <'0005 -_ � _.. ` <:000.5._ _ -. 10/04/06 < 0.005 < 0.005 < 0.005 120/06 <0005_._._ w ::` <0,;005:: <.0:005,_.. _.__: ,_.._T __.... - - CITY OF LINCOLNTON WWTP Effluent SILVER Results Sample Result (in mg/l) Sample Result (in mg/I) Sample Date Sample Date 12/07/05 < 0.002 06/07/06 < 0.002 1 _-.2 :: : < 0 002 : : 06121/06:: <0.002:: _. 01/11/06 < 0.002 07/05/06 < 0.002 01/25/06 ; < 0.002 :. ` - . __ 07/19/06 <:0.002 __ 02101 /06 < 0.002 08/09/06 < 0.002 02/15/. 6:_ .. <0.002:::' : 08/23/06: <=0;002 03/01 /06 < 0.002 09/06/06 < 0.005 03129/06 : < 0.002 - _ . _-.:09/20106� ' < 0 005 :__.r. 04/05/06 < 0.002 10/04/06 < 0.005 0411:9106 _<'0 002•... ...:_.....10/18/06: <':0 005 05/03/06 < 0.002 11/01/06 < 0.005 0$117/06 .: -< 0.002: 1110510E <0.005..:_. J 2007