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Home My WebLink AboutNC0026123_Draft Permit_20180501 ROY COOPER Governor MICHAEL S. REGAN Secretary Water Resources LINDA CULPEPPER Environmental Quality Interim Director May 1, 2018 John N. Ogburn, III City of Asheboro P.O. Box 1106 146 N Church Street Asheboro,NC 27204 Subject: Draft NPDES Permit Renewal Permit NC0026123 Asheboro WWTP, Grade IV Randolph County SIC Code 4952 Dear Mr. Ogburn: Enclosed with this letter is a copy of the draft NPDES permit renewal for your facility. Please review this draft carefully to ensure thorough understanding of the requirements and conditions it contains. There are several changes from the existing permit, including the following: • Regulatory citations have been added to the permit. • Parameter characteristic codes have been added in Section A. (1.). —Effluent Limitations and Monitoring Requirements. • An updated outfall map with instream monitoring station locations has been included. • Ammonia-Nitrogen (NH3-N) limitations have been decreased, based on wasteload allocation (WLA) calculation. Limitations for NH3-N are based on protection of aquatic life utilizing an EPA ammonia chronic criterion of 1.0 mg/L (summer) and 1.8 mg/L (winter). The WLA results yielded NH3-N limitations that are more stringent than in the current permit, as tabulated below: Existing Proposed Summer Winter Summer Winter Monthly Average 2.0 mg/L 4.0 mg/L 1.0 mg/L 1.8 mg/L Weekly Average 6.0 mg/L 12.0 mg/L 3.0 mg/L 5.4 mg/L Nothing Compares.. State of North Carolina I Environmental Quality 1611 Mail Service Center I Raleigh,North Carolina 27699-1611 919-707-9000 • Instream Conductivity monitoring has been added to the permit, based on the presence of an industrial pretreatment program as specified in Instream Conductivity and Fecal Coliform Monitoring Guidance(NCDWQ internal memo,2002).However,the Permittees' sampling requirement for this parameter is conditionally waived as long as the Permittee is a member of the Upper Cape Fear River Basin Association. • The NC 2007-2014 Water Quality Standard(WQS)Triennial Review was approved by the NC Environmental Management Committee (EMC) on November 13, 2014. The US EPA subsequently approved the WQS revisions on April 6,2016 with some exceptions.The NC Division of Water Resources NPDES Permitting Unit is required to implement the new dissolved metal standards in all permits public noticed after April 6, 2016. The new standards for most metals include acute standards. Further, the freshwater standards for several metals are expressed as the dissolved form of the metals, and seven metals have hardness-dependent equations. As a result, the NPDES Permitting Unit will need site- specific effluent hardness data and instream hardness data, upstream of the discharge, for each facility monitoring these metals in order to calculate permit limitations. Effluent hardness sampling has been added to this permit at a quarterly monitoring frequency. Upstream hardness sampling has not been added, in recognition of the receiving stream's 7Q10s of 0 cfs, which renders upstream hardness measurements irrelevant in dissolved metals calculations. See Section A. (1.). • As part of the NC 2007-2014 WQS Triennial Review, the Total Chromium WQS was removed and replaced with trivalent chromium (Chromium III) WQS and hexavalent chromium (Chromium VI) WQS. Total Chromium is made up of hexavalent and trivalent forms. The reasonable potential analysis using Asheboro's Total Chromium effluent data showed potential to violate the new Chromium VI standard. As a result, Total Chromium limits were removed from the permit; quarterly monitoring of Total Chromium and Chromium VI were added to the permit. Sampling for hexavalent chromium and total chromium together will ascertain if hexavalent chromium is present in the total chromium samples and thus the effluent. If sampling for hexavalent chromium indicates that hexavalent chromium is not present (i.e. non-detectable concentrations at the lower reporting level of the procedure)after two years of sampling,then the limits and monitoring requirements for hexavalent chromium in Section A. (1.) can be reduced or removed upon request. See Section A. (1.), Footnote 6. • Currently,EPA is allowing an action level for Chloride,but at the next permit renewal this may not be the case.Your passing record for toxicity tests indicate that a limit for chloride is not necessary at this time, but this may change in the future. Please note that your allowable concentration for Chloride is 230 mg/L. Your effluent average from January 2014 through December 2017 was 166 mg/L; and a reasonable potential analysis found a reasonable potential to exceed the allowable concentration. As a result, quarterly monitoring for Chloride in conjunction with toxicity tests is maintained in the permit. • A monthly average limit of 5.0 µg/L and a daily maximum limit of 22.0 µg/L for Cyanide have been added to the permit and samples shall be taken monthly. Results of a reasonable potential analysis on submitted data indicated a reasonable potential to exceed the instream Page 2 of 5 water quality standards. A footnote has been added to the effluent limitations sheet stating that the Division will consider all values reported below 10 µg/L to be compliant due to difficulties in quantifying cyanide in wastewater,but the Permittee shall submit all Cyanide values reported by a NC-certified laboratory, even if values are less than 10 µg/L. See Section A. (1.). • Quarterly monitoring for Total Zinc has been removed from the permit.Review of the data revealed no reasonable potential to exceed water quality standards. Quarterly monitoring shall be maintained per the facility's pretreatment Long Term Monitoring Program (LTMP). • Effluent Mercury data were reviewed from May 2012 to May 2017. The Permittee tested effluent for Total Mercury using EPA test Method 1631E throughout this period. In accordance with the 2012 Mercury TMDL NPDES Guidance,the Permittee needs to show annual average effluent concentrations below the Water Quality Based Effluent Limitation (WQBEL) of 12.0 ng/L and no exceedance of the Technology Based Effluent Limitation (TBEL) of 47 ng/L. A review of the data showed the annual averages were below the WQBEL and all data were below the TBEL; therefore, no mercury limitation is required. As a result of the TMDL evaluation, the limits and monitoring of mercury have been removed from Section A. (1.). Sampling for mercury will be conducted during the three (3) effluent pollutant scans [see Section A. (3.)] as well as the pretreatment LTMP using EPA Method 1631E. Fifty-one(51)out of 71 low level effluent mercury samples collected were over 1 ng/L.As a result, a Mercury Minimization Plan (MMP) requirement has been added in this permit renewal. See Section A. (4.). Please note that the Permittee shall develop and implement a MMP during this permit term.The MMP shall be developed within 180 days of the NPDES Permit Effective Date, 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(https://deq.nc.gov/document/nc-model-mercury-minimization-plan- dwr-npdes-swp-2013 0801). • A monthly average limit of 31.6 µg/L for Bromodichloromethane has been added to the permit and samples shall be taken monthly. Results of a reasonable potential analysis on submitted data indicated a reasonable potential to exceed the instream water quality standards. • Review of submitted effluent data showed all samples for Total Silver to be less than detection at 5 µg/L. In accordance with 15A NCAC 2B .0500, all test procedures must produce detection and reporting levels that are below the permit discharge requirements and all data generated must be reported to the approved detection level or lower reporting level of the procedure. Currently, DWR's laboratory identifies the Practical Quantification Limit for Total Silver at< 1.0 µg/L.The allowable discharge concentration for Total Silver at your facility is 0.06 µg/L as a monthly average. The Division recommends that the Permittee improves and implements "clean" sampling techniques, and analyzes Total Page 3 of 5 Silver to the lower reporting level of the procedure. Quarterly monitoring for Total Silver has been added to the permit. • A monthly average limit of 149 pg/L for 1,4-Dioxane has been added to the permit. 1,4- Dioxane is listed as a likely human carcinogen by the EPA.A basinwide survey of the Cape Fear River has found elevated concentrations of 1,4-Dioxane just downstream of the Asheboro WWTP discharge. To allow time and actions toward meeting the new 1,4- Dioxane limits, a three (3) year compliance schedule has been added to the permit with annual milestones. See Section A. (6.). Three effluent samples collected since December 2017, using EPA Method 624.1, have exceeded the allowable discharge limitation of 149 µg/L. Therefore, a limit and monitoring for 1,4-dioxane has been added to the permit. • Some of the wording has changed in Section A. (2.) — Chronic Toxicity Permit Limit; please review each paragraph carefully. • Section A. (3.) — Effluent Pollutant Scan has been modified to include the three specific years in which the Effluent Pollutant Scans shall be performed (2019, 2020, and 2021). In addition, at the end of the Special Condition, 2nd species Toxicity Testing Requirements for municipal permit renewals per Federal Regulations [40 CFR 122.21(j)(5)] have been added. • Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015. The requirement to continue reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application has been added to your final NPDES permit. See Section A. (7.). For information on eDMR, registering for eDMR and obtaining an eDMR user account, please visit the following web page: http://deq.nc.gov/about/divisions/water- resources/edmr. For more information on EPA's final NPDES Electronic Reporting Rule, please visit the following web site: https://www.federalregister.gov/documents/2015/10/22/2015- 24954/national-pollutant-discharge-elimination-system-npdes-electromc-reporting-rule. The NPDES Standard Conditions (Parts II, III, and IV) are not included with this draft. They can be found at the following link if you would like to review them in conjunction with this draft permit. http://ncdenr.s3.amazonaws.com/s3 fs- public/Water%20Quality/Surface%20Water%20Protection/NPDES/MISC/NPDES%20Standard %20Conditions-Boilerplate-DWR-SWP-NPDES-20150410.pdf Please note that the receiving stream is listed as impaired for Copper on North Carolina's Final 2014 303(d)Impaired Waters List.Addressing impaired waters is a high priority with the Division, Page 4 of 5 and instream data will continue to be evaluated. If there is noncompliance with permitted effluent limits and the stream impairment can be attributed to your facility, then mitigative measures may be required. Concurrent with this notification the Division is publishing a notice in a newspaper having circulation in the general Randolph County area, soliciting public comments on this draft permit. Please provide any written comments you may have to the following: NCDEQ/DWR, NPDES Permitting Branch, 1617 Mail Service Center,Raleigh,NC 27699-1617 no later than 30 days after receipt of this draft permit. Following the 30-day public comment period,the Division will review all pertinent comments and take appropriate action prior to issuing a final permit. If you have questions concerning this draft permit,please call me at(919) 807-6385 or by email at gary.perlmutter@ncdenr.gov. Sincerely, 0.7L I:14 Gary Perlmutter, Environmental Senior Specialist NPDES Complex Permitting Unit Hardcopy: NPDES Files eCopy: US EPA Region 4 DWR/Winston-Salem Regional Office/Water Quality Operations DWR/Wastewater Operator Certification Group/Maureen Kinney DWR/WSS/Aquatic Toxicology Branch/Susan Meadows DWR/Ecosystems Branch/Mark Vander Bourgh City of Asheboro/Water Resources Director/Michael D. Rhoney,PE o Page 5 of 5 Permit NC0026123 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provisions 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 City of Asheboro is hereby authorized to discharge wastewater from a facility located at the Asheboro Wastewater Treatment Plant 1032 Bonkemeyer Drive Asheboro, NC 27203 Randolph County to receiving waters designated as Hasketts 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 Nova This permit and authorization to discharge shall expire at midnight on September 30, 2022. Signed this day Month'xx, 2018. DRAFT Linda Culpepper, Interim Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 14 Permit NC0026123 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked, and as of this 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 City of Asheboro is hereby authorized to: 1. Continue to operate and maintain the 9.0 MGD wastewater treatment plant with a discharge through Outfall 001, consisting of the following components: • Influent pump station with automatic bar screens and grit removal • Influent ultrasonic flow meter /` • Influent composite sampler /' • Flow splitter box#1 • Seven(7)primary clarifiers; one(1) circular rated for 3.0 MGD, six(6)rectangular rated 1.0 MGD each • Trickling filter mixing/transfer pump basin , • Three (3)trickling filters, 140 feet diameter • Recirculation box/valve vault and circulation pump basin#1 • Four(4) secondary clarifiers; 27,024 cu. ft. each , • Recirculation pump basin#2 • Nitrification mixing/trainsfer pump basin • Flow splitter box#2 • Two (2)nitrification basins with mixing basin and blowers; 2,000,000 gallons each • Flow splitter box#3 • Magnesium hydroxide chemical'addition system • Three(3) final clarifiers; 70,333 cu. ft. each • Polymer chemical addition system • One (1)Parkson Dynasand continuous flow tertiary filter • Chlorine contact chamber with sodium hypochlorite addition for disinfection • Sodium bisulfite addition for dichlorination • Effluent flow meter • Effluent composite sampler • Cascade aeration basin • Two (2) sludge digesters; 401,900 gallons each • Drying beds, 105 ft. x 450 ft. total • Sludge dewatering presses, thickener tanks, lime stabilization system, and solids storage • Standby power generation This facility is located at the Asheboro WWTP, 1032 Bonkemeyer Drive, Asheboro, in Randolph County. 2. Discharge from said treatment works via Outfall 001, at the location specified on the attached map into Hasketts Creek currently classified C waters in the Cape Fear River Basin. Page 2 of 14 Permit NC0026123 PART I A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.] a. During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge treated municipal and industrial wastewater from outfall 001 of this Grade IV facility. Such discharges shall be limited and monitored' by the Permittee as specified below: PARAMETER CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Parameter Code Monthly Weekly Daily Measurement Sample Sample Average Average Maximum Frequency Type Location 2 Flow 50050 9 0 MGD Continuous Recording Influent or Effluent BOD5(20°C)3 Influent and (April 1 October 31) 80082 5 0 mg/L 7 5 mg/L Daily Composite Effluent BOD5(20°C)3 Influent and 80082 10 0 mg/L 15 0 mg/L Daily Composite (November 1 -March 31) Effluent Total Suspended Solids C0530 30 0 mg/L 45 0 mg/L DailyComposite Influent and g g p (TSS)3 Effluent Ammonia(NH3 as N) (April 1 October 31) C0610 1 0 mg/L 3 0 mg/L Daily Composite Effluent Ammonia(NH3 as N) (November 1 March 31) C0610 1 8 mg/L 5 4 mg/L Daily Composite Effluent Dissolved Oxygen(DO) 00300 Daily Average>6 0 mg/L Daily Grab Effluent pH 00400 Between 6 0 and 9.0 standard units Daily Grab Effluent Fecal Coliform 31616 200/100 mL 400/100 mL Daily Grab Effluent (geometric mean) Total Residual Chlorine 50060 17 pg/L Daily Grab Effluent (TRC)4 Temperature(°C) 00010 Monitor and Report Daily Grab Effluent Conductivity(pmhos/cm) 00094 Monitor and Report Daily Grab Effluent Total Hardness[as CaCO3 00900 Monitor and Report QuarterlyComposite Effluent or(Ca+Mg)](mg/L)5 p p Total Chromium(pg/L) 01034 Monitor and Report Quarterly Composite Effluent Chromium VI(Ng/L)6 01032 Monitor and Report Quarterly Composite Effluent Total Kjeldahl Nitrogen 00625 Monitor and Report Monthly Composite Effluent (TKN)(mg/L) Nitrate/Nitrite Nitrogen (NO3+NO2)(mglL) 00630 Monitor and Report Monthly Composite Effluent Page 3 of 14 Permit NC0026123 PARAMETER CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Parameter code Monthly Weekly Daily Measurement Sample Sample Average Average Maximum Frequency Type Location2 Total Nitrogen [TN=(NO2+NO3)+TKN] C0600 Monitor and Report Monthly Calculated Effluent (mg/L) Total Phosphorus(mg/L) C0665 Monitor and Report Quarterly Composite Effluent Dibromochloromethane / (pg/L) 32150 Monitor and Report / ,Quarterly Grab Effluent Bromodichloromethane 38693 31 6 pg/L ///' Monthly Grab Effluent Chlorides(mg/L)7 00940 Monitor and Report Quarterly Composite Effluent Total Copper(pg/L) 01042 Monitor and Report Quarterly Composite Effluent Total Cyanide 8 00720 5 0 Ng/L22 0 pg/L / ,Monthly Grab Effluent Total Silver(pg/L)9 01077 Monitor and Report Quarterly Composite Effluent 1,4-Dioxane 82388 149 pg/L 10 Monthly Grab Effluent Chronic Toxicity 11 TGP3B Cenodaphnia Pass/Fail at 90%effluent Quarterly Composite Effluent Effluent Pollutant Scan NC01 Monitor and Report" ,7 , Footnote 12 Footnote 12 Effluent Dissolved Oxygen(mg/L)13 00300 Monitor and Report ' Variable 14 Grab U, D1,D2 Temperature(°C)13, 00010 Monitor and Report Variable 14 Grab U, D1,D2 Conductivityy(pmhos/cm)13 00094 Monitor and Report Variable 14 Grab U, D1, D2 Footnotes: 1. Submit discharge monitoring reports electronically using the NC DWR's eDMR application system. See Section A. (7.). , 2 U = approximately 80'0 feet upstream of the discharge; D1 = downstream at NCSR 2128; and D2 = downstream m the Deep River at'NCSR 2261. 3. The monthly average effluent BODS and TSS concentrations shall not exceed 15% of the respective influent value(85%removal). /" 4. The Division shall consider all effluent TRC values reported below 50 µg/L 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 µg/L. 5. Effluent Total Hardness sampling shall be conducted in conjunction with testing for hardness-dependent metals (cadmium, chromium, copper, lead,mckel, silver and zinc). 6. If Chromium VI is not detected (i.e non-detectable concentrations below the lower reporting level of the procedure) after two years of sampling, the Permittee may request DWR to reduce or remove monitoring requirements for Chromium VI in Section A. (1.). 7. Chlorides will be monitored in conjunction with Chronic Toxicity tests. 8. Due to difficulties quantifying cyanide in a wastewater matrix, the Division shall consider all values reported below 10 µg/L to be "compliant" with this permit However, the Permittee shall submit to DWR all values Page 4 of 14 Permit NC0026123 reported by a North Carolina-certified test method (even if values fall below 10 µg/L), and the Permittee shall consider all reported values when calculating averages, if any, as required by this permit. 9 The Permittee should review and implement clean sampling techniques for Total Silver The reporting laboratory should test to the lower reporting level of the procedure. 10. This limit becomes effective [within three (3) years of the effective date of this permit]. The Permittee shall follow the compliance schedule detailed in Section A. (6). 11. Whole Effluent Toxicity samples shall be collected dunng the months of March, June, September, and December. See Section A. (2) 12 The Permittee shall preform three Effluent Pollutant Scans during the term of this permit. See Section A. (3.). 13. The Permittee has deferred receiving-stream sampling to the Upper Cape Fear River Basin Association by memorandum of agreement (MOA). Should this MOA terminate for any reason, the Permittee shall immediately inform the Division in writing and immediately resume instream monitoring in accordance with this permit. 14. Instream samples shall be collected three times per week from June 1 through September 30, and once per week from October 1 through May 31. b. There shall be no discharge of floating solids or visible foam in other than trace amounts. Page 5 of 14 Permit NC0026123 A. (2.) CHRONIC TOXICITY PERMIT LIMIT (Quarterly)—9.0 MGD [15A NCAC 02B.0200 et seq.] The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 90%. The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or subsequent versions. The tests will be performed during the months of March, June, September and December. These months signify the first month of each three-month toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be obtained during representative effluent discharge and 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 Chronic Value (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-December 2010) 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, using the parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the following address: NC DEQ/DWR Water Sciences Section/Aquatic Toxicology Branch 1621 Mail Service Center Raleigh,NC 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Water 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. 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 Water 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. Assessment of toxicity compliance is based on the toxicity Page 6 of 14 Permit NC0026123 testing quarter, which is the three-month time interval that begins on the first day of the month in which toxicity testing is required by this permit and continues until the final day of the third month. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Resources indicate potential impacts to the receiving stream, this permit may be re-opened and modified to include alternate monitoring requirements or limits. 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. Page 7 of 14 Permit NC0026123 A. (3.) EFFLUENT POLLUTANT SCAN (Municipal POTWs) [NCGS 143-215.1 (b)] 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: 2019, 2020, and 2021. 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) C0610 1,2-dichloroethane 32103 Bis(2-chloroethoxy)methane 34278 Chlonne(total residual,TRC) 50060 Trans-1,2-dichloroethylene 34546 Bis(2-chloroethyl)ether 34273 Dissolved oxygen 00300 1,1-dichloroethylene 34501 Bis(2-chloroisopropyl)ether 34283 Nitrate 00620 1,2-dichloropropane 34541 Bis(2-ethylhexyl)phthalate 39100 Nitrate 00615 1,3-dichloropropylene,/ 77163 4-bromophenyl phenyl ether 34636 Kjeldahl nitrogen 00625 Ethylbenzene / - 34371 Butyl benzyl phthalate 34292 Oil and grease 00556 Methyl bromide / 34413 2-chloronaphthalene 34581 Phosphorus C0665 Methyl chlonde 34418 4-chlorophenyl phenyl ether 34641 Total dissolved solids 70295 Methylene chlonde ., 3442 / Chrysene 34320 Hardness 00900 1,1,2,2-tetrachloroethane, 81549 Di-n-butyl phthalate 39110 Antimony 01097 ,Tetrachloroethylene 34475, Di-n-octyl phthalate 34596 Arsenic 01002 Toluene , 34010 Dibenzo(a,h)anthracene 34556 Beryllium 01012 1,1,1-tnchloroethane 34506 1,2-dichlorobenzene 34536 Cadmium 01027 1,1,2-trichloroethane ` 34511 1,3-dichlorobenzene 34566 Chromium ,01034 Tnchloraethylene 39180 , 1,4-dichlorobenzene 34571 Copper /7 01042 Vinyl chlonde 39175 3,3-dichlorobenzidine 34631 Lead 01051 Acid-extractable compounds , Diethyl phthalate 34336 Mercury(Method 1631E) COMER r P-chloro-m-cresol 34452 Dimethyl phthalate 34341 Nickel 01067 /' 2-chlorophenol 34586 2,4-dinitrotoluene 34611 Selenium 01147 /2,4-dichlorophenol 34601 2,6-dinitrotoluene C0626 Silver 01077 2,4-dimethylphenol 34606 1,2-diphenylhydrazine 34346 Thallium 01059 4,6-dinitro-o-cresol -/ 34657 Fluoranthene C0376 Zinc 01092 2,4-dinitrophenol 34616 Fluorene 34381 Cyanide 00720 2-nitrophenol 34591 Hexachlorobenzene C0700 Total phenolic compounds 32730 4-nitrophenol 34646 Hexachlorobutadiene 39702 Volatile organic compounds Pentachlorophenol 39032 Hexachlorocyclo-pentadiene 34386 Acrolein 34210 Phenol 34694 Hexachloroethane 34396 Acrylonitrile 34215 / 2,4,6-tnchlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403 Benzene 34030 Base-neutral compounds Isophorone 34408 Bromofomi 32104 Acenaphthene 34205 Naphthalene 34696 Carbon tetrachlonde 32102 Acenaphthylene 34200 Nitrobenzene 34447 Chlorobenzene 34301 Anthracene CO220 N-nitrosodi-n-propylamine 34428 Chlorodibromomethane 34306 Benzidine 39120 N-nitrosodimethylamine 34438 Chloroethane 85811 Benzo(a)anthracene 34526 N-nitrosodiphenylamine 34433 2-chloroethyl vinyl ether 34576 Benzo(a)pyrene 34247 Phenanthrene 34461 Chloroform 32106 3,4 benzofluoranthene 34230 Pyrene 34469 Dichlorobromomethane 32101 Benzo(ghi)perylene 34521 1,2,4-tnchlorobenzene 34551 1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242 Page 8 of 14 Permit NC0026123 Reporting. Test results shall be reported electronically via eDMR or on DWR Form — DMR-PPA1 (or on a form approved by the Director) by December 31st of each designated sampling year. The report shall be submitted to the following address: NC DEQ / DWR / Central Files, 1617 Mail Service Center, Raleigh,North Carolina 27699-1617. Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal facilities that are subject to the Effluent Pollutant Scan requirements listed above are also subject to additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5) and EPA Municipal Application Form 2A. The US EPA requires four (4) toxicity tests for a test organism other than the test species currently required in this permit. The second species tests should be conducted either quarterly for a 12-month period prior to submittal of the permit renewal application, or four tests performed at least annually in the four and one-half year period prior to the application. The second species tests must be multiple concentration (5 concentrations plus the control). These tests shall be performed for acute or chronic toxicity, whichever is specified in this permit. POTWs performing NPDES chronic Ceriodaphnia testing should perform chronic Fathead minnow testing. POTWs performing NPDES acute Fathead Minnow testing should perform acute Ceriodaphnia testing. POTWs performing NPDES chronic Mysid shrimp testing should perform chronic Silverside Minnow testing. The second species toxicity test results shall be filed with the Aquatic Toxicology Branch at the following address: NC DEQ/DWR Water Sciences Section/Aquatic Toxicology Branch 1621 Mail Service Center Raleigh,North Carolina 27699-1621 Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the additional toxicity tests and reporting requirements. Results should also be summarized in Part E (Toxicity Testing Data) of EPA Municipal Application Form 2A, when submitting the permit renewal application to the NPDES Permitting Unit. Page 9 of 14 Permit NC0026123 A. (4.) MERCURY MINIMIZATION PLAN (MMP) [NCGS 143-215.1 (b)] The Permittee shall develop and implement a mercury minimization plan during this permit term. The MMP shall be developed within 180 days of the permit effective date, 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 (https://deq.nc.gov/document/nc-model-mercury- mimmization-plan-dwr-npdes-swp-20130801). 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. Performance of the Mercury Minimization Plan will meet the requirements of the TMDL (Total Maximum Daily Load) for mercury approved by USEPA on October 12, 2012, unless and until a Waste Load Allocation specific to this facility is developed and this NPDES permit is amended to require further actions to address the Waste Load Allocation. A. (5.) NUTRIENT RE-OPENER [NCGS 143-215.1 (b)] Pursuant to N.C. General Statutes Section 143-215.1 and the implementing rules found in the North Carolina Administrative Code at 15A NCAC 2H.0112 (b) (1) and 2H.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 purpose of 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. In addition, the results of water quality modeling may require that limits for total nitrogen and total phosphorus be imposed in this permit upon renewal. Page 10 of 14 Permit NC0026123 A. (6.) SCHEDULE OF COMPLIANCE FOR 1,4-DIOXANE LIMITATIONS [G.S. 143-215 1(b)] 1. Within one (1) year from the effective day of the permit, the Permittee shall submit to the Division of Water Resources a Corrective Action Plan summanzmg the strategy or actions to be taken to achieve compliance with the 1,4-Dioxane limitation listed in Section A. (1.), which includes specific dates for completion or implementation of each action. 2. Within two (2) years from the effective date of the permit, the Permittee shall submit a report to the Division summarizing actions taken during the previous year to achieve compliance with the 1,4-Dioxane limitation. The actions shall be m accordance with the Corrective Action Plan submitted and approved by DWR 3. The Permittee shall achieve compliance with the 1,4-Dioxane limitation specified in Section A. (1.) within three(3)years of the effective date of this permit. Upon approval of the Corrective Action Plan by the Division, the report and actions become an enforceable part of this permit. Any modifications to the schedule shall be requested to the Division at least ninety (90) days before the deadline.Modifications to the schedule in excess of four(4)months will be subject to public notice. Corrective Action Plan and Reports shall include the owner's name, NPDES permit number and Permittee contact person, and shall be submitted to. (1) NCDEQ/Division of Water Quality (2) NCDEQ/Division of Water Quality NPDES Permitting Winston-Salem Regional Office 1617 Mail Service Center 450 West Hanes Mill Road, Suite 300 Raleigh,NC 27699-1617 Winston-Salem,NC 27105 Page 11 of 14 Permit NC0026123 A. (7.) ELECTRONIC REPORTING OF MONITORING REPORTS [NCGS 143-215.1 (b)] Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015. NOTE: This Section supplements or supersedes the following sections within Part II of this permit (Standard Conditions for NPDES Permits): • Section B. (11.) Signatory Requirements • Section D. (2.) Reporting • Section D. (6.) Records Retention • Section E. (5.) Monitoring Reports 1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)1 The Permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report(eDMR) Internet application. Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with EPA's ,Cross-Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all discharge monitoring data to the state electronically using eDMR and will be required to complete'the eDMR submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR to the following address: NC DEQ/DWR/Water Quality Permitting Section Attn: Central Files 1617 Mail Service Center Raleigh,North Carolina 27699-1617 If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being physically located in an area where less than 10 percent of the households have broadband access, then a temporary waiver"from the NPDES electronic reporting requirements may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address above. See"How to Request a Waiver from Electronic Reporting" section below. Regardless of the submission method, the first DMR is due on the last day of the month following the issuance of the permit or in the case of a new facility, on the last day of the month following the commencement of discharge. Starting on December 21, 2020, the permittee must electronically report the following compliance monitoring data and reports, when applicable: Page 12 of 14 Permit NC0026123 • Sewer Overflow/Bypass Event Reports; • Pretreatment Program Annual Reports; and • Clean Water Act(CWA) Section 316(b)Annual Reports. The Permittee may seek an electronic reporting waiver from the Division (see "How to Request a Waiver from Electronic Reporting" section below). 2. Electronic Submissions hi accordance with 40 CFR 122.41(1)(9), the permittee must/identify the initial recipient at the time of each electronic submission. The permittee should use the EPA's website resources to identify the initial recipient for the electronic submission. Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity (EPA or the state authorized by EPA to implement the NPDES program) that is the designated entity for receiving electronic NPDES data [see 40 CFR 127.2(b)]. EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each type of electronic submission and for each state. Instructions on how to access and use the appropriate electronic reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting Rule is found at: https//www.federalregister.gov/documents/2015/10/22/2015- 24954/national-pollutant-discharge-ehmmation-system-npdes-electronic-reporting-rule Electronic submissions must start by the dates listed in the"Reporting Requirements" section above. 3. How to Request a Waiver from Electronic Reporting The Permittee may seek a temporary electronic reporting waiver from the Division. To obtain an electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to the Division. Requests for temporary electronic reporting waivers must be submitted in writing to the Division for written approval at least sixty (60) days prior to the date the facility would be required under this permit to begin submitting monitoring data and reports. The duration of a temporary waiver shall not exceed 5 years and shall thereupon expire. At such time,monitoring data and reports shall be submitted electronically to the Division unless the permittee re-applies for and is granted a new temporary electronic reporting waiver by the Division. Approved electronic reporting waivers are not transferrable. Only permittees with an approved reporting waiver request may submit monitoring data and reports on paper to the Division for the period that the approved reporting waiver request is effective. Information on eDMR and the application for a temporary electronic reporting waiver are found on the following web page: http://deq.nc.gov/about/divisions/water-resources/edmr Page 13 of 14 Permit NC0026123 4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)1 All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II, Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting purposes. For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and login credentials to access the eDMR system. For more information on North Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit the following web page: http://deq.nc.gov/about/divisions/water-resources/edmr Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED: "I certify, under penalty of law, that this document and'all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief true, accurate, and complete I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." 5. Records Retention [Supplements Section D. (6.)1 The Permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These records or copies shall be maintained for a period of at least 3 years from the date of the report. This period may be extended by request of the Director at any time [40 CFR 122.41]. Page 14 of 14