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Home My WebLink AboutNC0026646_Permit (Issuance)_20201019DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F ROY COOPER Governor MICHAEL S. REGAN Secretary S. DANIEL SMITH Director Mr. Kent Scott, ORC Town of Pilot Mountain 124 West Main Street Pilot Mountain, North Carolina 27041 Dear Mr. Scott: NORTH CAROLINA Environmental Quality October 19, 2020 Subject: Final NPDES Permit Renewal Permit NCO026646 Pilot Mountain WWTP Surry County Grade II/IIl Biological WPCS SIC Code 4952 Division personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are forwarding the attached NPDES 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 changes were made to the permit sent to you on September 8, 2020: • The three years for Primary Pollutant Scan monitoring have been adjusted to 2022, 2023, and 2024 [see A. (5.)]. • The notation concerning the Electronic Reporting Rule — Phase 2 Extension has been revised to extend the Phase 2 deadline from December 21, 2020, to December 21, 2025. The current compliance date will be extended if the implementation date is extended as a final regulation change in the Federal Register [see A. (6.)]. The final permit maintains the following significant changes identified in the letter sent on September 8, 2020: • Regulatory citations have been added to the permit. • Based on review of effluent data that showed multiple weekly limit exceedences and high individual values, Fecal Coliform monitoring has been increased to 2/week at 0.5 MGD, to be sampled on consecutive days [See A. (1.)]. Based on review of effluent data that showed no detections of oil and grease, monitoring for oil and grease has been removed from the permit [See A. (1.) and A. (2)]. Based on the reasonable potential analysis (RPA) showing no reasonable potential to violate state water quality standards, but the maximum predicted value was > 50% of the allowable concentration with multiple relatively high values, monitoring for Total Copper at 0.5 MGD have been increased from quarterly to monthly [See A. (1.)]. North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617 NORIr cuaoi o.w�rm m em�mnmemn w+\ /� 919.707.9000 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F • Based on the RPA showing reasonable potential to violate state water quality standards, total copper limits have been added to the permit at the 1.5 MGD flow tier and the quarterly monitoring requirement has been changed to monthly monitoring [See A. (2.)]. • Based on the RPA showing no reasonable potential to violate state water quality standards, the monitoring requirement for zinc has been removed from the permit [See A. (1.) and A. (2•)]• • 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 and instream hardness sampling, upstream of the discharge, have been added to the permit at a monitoring frequency of quarterly [See A. (L) and A. (2.)]. • Based on DWR Instream Conductivity Monitoring Guidance, the facility discharges 100% domestic wastewater so instream conductivity monitoring has been removed from the permit [See A. (L) and A. (2.)]. • Based on DWR Instream Fecal Coliform Monitoring Guidance, since the facility discharges to waters that are neither impaired for fecal coliform nor Class B waters, fecal coliform has been removed from instream monitoring requirements [See A. (L) and A.(2.)]. • Some of the wording has changed in Special Condition A. (3.), Chronic Toxicity Permit Limit, to include both 0.5 and 1.5 MGD flow tiers and to allow for electronic submittal of test results. As a result, the special condition for Chronic Toxicity Permit Limit at 1.5 MGD has been removed from the permit. Please review each paragraph carefully of the combined special condition carefully. • Special Condition A. (5.) has been modified to update the specific three years in which the Effluent Pollutant Scan shall be performed: 2021, 2022, and 2023. In addition, some of the wording has changed to allow for electronic submittal of effluent pollutant scans and second species toxicity results. Please read each paragraph carefully. Parameter codes have been added to the Effluent Limitations and Monitoring Requirements, and the Effluent Pollutant Scans special conditions [See A. (L), A.(2.), and A.(5.)]. • Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports. 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 NPDES permit [See A. (6.)]. 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 demand is made, this decision shall be final and binding. Page 2 of 3 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F 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 Resources or any other Federal, State, or Local governmental regulations. If you have any questions concerning this permit, please contact Gary Perlmutter at (919) 707- 3611 or via email at gary.perlmutter(ancdenr.gov. Sincerely, DocuSiyned b�y�: ` ..'''' r V WkkkU IJ C464531431644FE... for S. Daniel Smith, Director Division of Water Resources, NCDEQ Hardcopy: NPDES Files Central Files eCopy: US EPA Region 4 DWR/Winston-Salem Regional Office/Water Quality/Lon Snider DWR/Ecosystems Branch/Mark Vander Borgh DWR/Aquatic Toxicology Branch/Cindy Moore Page 3 of 3 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NCO026646 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, the Town of Pilot Mountain is hereby authorized to discharge wastewater from a facility located at the Pilot Mountain Wastewater Treatment Plant (WWTP) 601 Lynchburg Road Pilot Mountain Surry County to receiving waters designated as the Ararat River in the Yadkin -Pee Dee 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 December 1, 2020. This permit and authorization to discharge shall expire at midnight on February 28, 2025. Signed this day October 19, 2020. Wh C464531431644FE... for S. Daniel Smith, Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NC0026646 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. The Town of Pilot Mountain is hereby authorized to: 1. Continue to operate an existing 1.5 MGD (at a reduced flow of 0.5 MGD) extended aeration facility that includes the following components: ➢ Influent pump station ➢ Manual Bar Screen ➢ Oxidation ditch ➢ Two clarifiers ➢ Chlorine disinfection ➢ Step re -aeration ➢ Aerated sludge holding unit This facility is located at the Pilot Mountain WWTP, on Lynchburg Road near Pilot Mountain in Surry County. 2. Upon receiving written authorization from the Division of Water Resources, increase flow and operate facility at 1.5 MGD design flow. 3. Discharge from said treatment works at the location specified on the attached map into the Ararat River, which is classified as C waters in the Yadkin -Pee Dee River Basin. Page 2 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NC0026646 Part I A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.5 MGD) [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade II Biological Pollution Control System 115A NCAC 08G .0302] a. Beginning upon the effective date of the permit and lasting until the Division grants written authorization to increase the facility's flow limit or until permit expiration, the Permittee is authorized to discharge treated municipal wastewater from Outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below: EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Monthly Weekly Daily Measurement Sample Sample Parameter Code Average Average Maximum Frequency Type Location 4 Flow 3 50050 0.5 MGD Continuous RecordingInfluent or Effluent BOD, 5-day, 20°C 4 C0310 30.0 mg/L 45.0 mg/L Weekly Composite Influent & Effluent Total Suspended Solids (TSS) 4 C0530 30.0 mg/L 45.0 mg/L Weekly Composite Influent & Effluent NH3-N (Apr 1 - Oct 31) C0610 28.6 mg/L 35.0 mg/L Weekly Composite Effluent NH3-N (Nov 1 - Mar 31) Monitor and Report Weekly Composite Effluent Dissolved Oxygen (DO) 00300 Daily Average >_ 5 mg/L Weekly Grab Effluent Fecal Coliform (geometric mean) 31616 200/100 mL 400/100 mL 2/Weekly 5 Grab Effluent Temperature 00010 Monitor and Report Daily Grab Effluent Total Nitrogen (NO2+ NO3 + TKN) CO600 Monitor and Report Monthly Composite Effluent Total Phosphorus C0665 Monthly Composite Effluent pH 00400 Between 6.0 and 9.0 standard units Weekly Grab Effluent Total Hardness (as CaCO3) (mg/L) B 00900 Monitor and Report p Quarter) Y Composite P Effluent Total Copper 01042 Monitor and Report Monthly Composite Effluent Chronic Toxicity 7 THP3B Monitor and Report Quarterly Composite Effluent Total Residual Chlorine 8 50060 28 Ng/L 2/week Grab Effluent Total Hardness (as CaCO3) (mg/L) 9 00900 Monitor and Report P Quarter) Y Grab U stream P Dissolved Oxygen (DO) 00300 Variable 2 Grab U & D 2 Temperature 00010 Variable 1 Grab U & D 2 Footnotes: 1. The Permittee shall submit discharge monitoring reports electronically using NCDWR's eDMR application system; see Section A. (6.). 2. U = Upstream at least 100 feet from the outfall. D = Downstream approximately 0.4 miles at NCSR 2044. Stream samples shall be collected weekly from October 1 through May 30, and 3/week from June 1 through September 30. Instream monitoring for DO and Temperature is provisionally waived in light of the Permittee's participation in the Yadkin -Pee Page 3 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NCO026646 Dee River Basin Association (YPDRBA). Instream monitoring shall be immediately reinstated and the Division shall be notified immediately should the Permittee end its participation in the YPDRBA. 3. When the most recent 12-month flow average is 90% of permitted flow (0.45 MGD), permittee shall send written request to DWR to operate under the 1.5 MGD permit effluent page. 4. The monthly average effluent BOD5 and TSS concentrations shall not exceed 15% of the respective influent value (85% removal). 5. Fecal Coliform shall be sampled on 2 consecutive days per week. 6. Effluent Hardness sampling should be in conjunction with testing for hardness -dependent metals (copper). 7. Whole Effluent Toxicity will be monitored using the Pass/Fail Ceriodaphnia dubia at 1% effluent. Samples shall be taken in January, April, July, and October; see A. (3.). 8. The facility shall monitor TRC when using chlorination for disinfection. 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. 9. The Permittee shall sample instream hardness, upstream of the facility's discharge. The sample shall be representative of the hardness in the receiving stream. If the Permittee is a member of the Monitoring Coalition Program, sampling for instream hardness may be waived as long as the Monitoring Coalition agrees to sample hardness at the nearest upstream location, at a minimum frequency of quarterly, and the Permittee has obtained approval from DWR - NPDES Permitting Unit that the upstream station being monitored by the Coalition is representative of the receiving stream for this discharge. The Permittee is responsible for submitting instream hardness test results with its permit renewal application package. If Coalition membership is cancelled or the Coalition terminates instream hardness sampling at the approved station, the Permittee will immediately notify the Division and resume sampling for instream hardness, upstream of its discharge. b. There shall be no discharge of floating solids or visible foam in other than trace amounts. Page 4 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NCO026646 A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (1.5 MGD) [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade III Biological Pollution Control System [15A NCAC 08G .0302] a. Beginning upon written authorization by the Division to increase flow to 1.5 MGD and lasting until expiration, the Permittee is authorized to discharge treated municipal wastewater from Outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below: EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Monthly Weekly Daily Measurement Sample Sample Parameter Code Average Average Maximum Frequency Type Location 2 Flow 50050 1.5 MGD Continuous RecordingInfluent or Effluent BOD, 5-day, 20°C 3 C0310 30.0 mg/L 45.0 mg/L 3/week Composite Influent & Effluent Total Suspended Solids (TSS) 3 C0530 30.0 mg/L 45.0 mg/L 3/week Composite Influent & Effluent NH3-N (Apr 1 - Oct 31) C0610 28.6 mg/L 35.0 mg/L 3/week Composite Effluent NH3-N (Nov 1 - Mar 31) Monitor and Report 3/week Composite Effluent Dissolved Oxygen (DO) 00300 Daily Average >_ 5 mg/L 3/week Grab Effluent Fecal Coliform (geometric mean) 31616 200/100 mL 400/100 mL 3/week Grab Effluent Temperature 00010 Monitor and Report Daily Grab Effluent Total Nitrogen Total NO3 + TKN) C0600 Monitor and Report Weekly Composite Effluent Total Phosphorus C0665 Weekly Composite Effluent pH 00400 Between 6.0 and 9.0 standard units 3/week Grab Effluent Total Hardness (as CaCO3) (mg/L) 4 00900 Monitor and Report P Quarter) Y Composite P Effluent Total Copper 01042 286 Ng/L 313 Ng/L Monthly Composite Effluent Chronic Toxicity 6 THP3B Monitor and Report Quarterly Composite Effluent Total Residual Chlorine 6 50060 1 1 28 Ng/L 3/week Grab Effluent Effluent Pollutant Scan NC01 Monitor and Report Footnote 7 Footnote 7 Effluent Total Hardness (as CaCO3) 00900 Monitor and Report Quarterly Grab Upstream 8 Dissolved Oxygen (DO) 00300 Variable 2 Grab U & D 2 Temperature 00010 Variable 2 Grab U & D 2 Footnotes: l . The Permittee shall submit discharge monitoring reports electronically using NCDWR's eDMR application system; see Section A. (6.). 2. U = Upstream at least 100 feet from the outfall. D = Downstream approximately 0.4 miles at NCSR 2044. Stream samples shall be collected weekly from October I through May 30, and 3/week from June 1 through September 30. Instream monitoring for DO and Temperature is provisionally waived in light of the Permittee's participation in the Yadkin -Pee Dee River Basin Association (YPDRBA). Instream monitoring shall be immediately reinstated and the Division shall be notified immediately should the Permittee end its participation in the YPDRBA. Page 5 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NCO026646 3. The monthly average effluent BODS and TSS concentrations shall not exceed 15% of the respective influent value (85% removal). 4. Effluent Hardness sampling should be in conjunction with testing for hardness -dependent metals (copper). 5. Whole Effluent Toxicity will be monitored using the Pass/Fail Ceriodaphnia dubia at 1% effluent. Samples shall be taken in January, April, July, and October; see A. (3.). 6. The facility shall monitor TRC when using chlorination for disinfection. 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. 7. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit; see A. (5.). 8. The Permittee shall sample instream hardness, upstream of the facility's discharge. The sample shall be representative of the hardness in the receiving stream. If the Permittee is a member of the Monitoring Coalition Program, sampling for instream hardness may be waived as long as the Monitoring Coalition agrees to sample hardness at the nearest upstream location, at a minimum frequency of quarterly, and the Permittee has obtained approval from DWR - NPDES Permitting Unit that the upstream station being monitored by the Coalition is representative of the receiving stream for this discharge. The Permittee is responsible for submitting instream hardness test results with its permit renewal application package. If Coalition membership is cancelled or the Coalition terminates instream hardness sampling at the approved station, the Permittee will immediately notify the Division and resume sampling for instream hardness, upstream of its discharge. b. There shall be no discharge of floating solids or visible foam in other than trace amounts. Page 6 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NCO026646 A. (3.) CHRONIC TOXICITY PERMIT LIMIT (Quarterly) [15A NCAC 02B .0200] The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 1% at 0.5 MGD and 3% at 1.5 MGD. 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 January, April, July and October. 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 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 electronically using the Division's eDMR system for the months in which tests were performed, using the parameter code TGP311 for the pass/fail results and THP313 for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the following address: North Carolina Division of Water Resources Water Sciences Section/Aquatic Toxicology Branch 1621 Mail Service Center Raleigh, NC 27699-1621 Or, results can be sent to the email, ATF onns.ATB(a)ncdenr.gov. 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. 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 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. Page 7 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NC0026646 If the Permittee monitors any pollutant more frequently than 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 Form 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. A. (4.) EFFLUENT MERCURY ANALYSIS [NCGS 143-215.1(b)] The Permittee shall provide one effluent mercury analysis, using EPA Method 1631E, in conjunction with the next permit renewal application. The analysis should be taken within 12 months prior to the application date. Any additional mercury effluent mercury measurement conducted from the effective date of this permit and up to the application date shall be submitted with the renewal application. Page 8 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F ii� 11-110MITOZ1:7 A. (5.) EFFLUENT POLLUTANT SCAN (1.5 MGD) [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: 2022, 2023, and 2024. 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 Trans- 1,2-dichloroethylene 34546 Bis (2-chloroethyl) ether 34273 Chlorine (total residual, TRC) 50060 1,1-dichloroethylene 34501 Bis (2-chloroisopropyl) ether 34283 Dissolved oxygen 00300 1,2-dichloropropane C0541 Bis (2-ethylhexyl) phthalate C0100 Nitrate I Nitrite 00630 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 chloride 34418 4-chlorophenyl phenyl ether 34641 Total dissolved solids 70295 Methylene chloride 34423 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-trichloroethane 34506 1,2-dichlorobenzene 34536 Cadmium 01027 1,1,2-trichloroethane 34511 1,3-dichlorobenzene 34566 Chromium C0034 Trichloroethylene 39180 1,4-dichlorobenzene 34571 Copper 01042 Vinyl chloride 39175 3,3-dichlorobenzidine 34631 Lead 01051 Acid -extractable compounds: Diethyl phthalate 34336 Mercury (Method 1631E) COMER 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 C0702 Volatile organic compounds: Pentachlorophenol 39032 Hexachlorocyclo-pentadiene 34386 Acrolein 34210 Phenol 34694 Hexachloroethane 34396 Acrylonitrile 34215 2,4,6-tdchlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403 Benzene 34030 Base -neutral compounds: Isophorone 34408 Bromoform 32104 Acenaphthene 34205 Naphthalene 34696 Carbon tetrachloride 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 C0526 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-tichlorobenzene C0551 1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242 1,2-dichloroethane 32103 Bis (2-chloroethoxy) methane 34278 Reporting. Test results shall be reported electronically using the Division's eDMR system or on DWR Form DMR-PPA-1(or on a form approved by the Director) by December 31" of each designated Page 9 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NC0026646 sampling year. The Permittee must at least report completion of the test in the eDMR system by entering 66 1" or "Y" for parameter code NCO - Annual Pollutant Scan. If utilizing the DWR Form submit to the following address: NC DEQ/DWR/NPDES Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. Or the form may be uploaded at: https://edocs.deg.nc.gov/Fonns/NPDES WW-EDMR-Supplemental- Form 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 122.210)(5). The US EPA requires four (4) toxicity tests for a test organism other than the test species currently required in this permit. The multiple 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. These tests shall be performed for acute or chronic toxicity, whichever is specified in this permit. The multiple species toxicity test results shall be filed with the Aquatic Toxicology Branch at the following address: North Carolina Division of Water Resources Water Sciences Section/Aquatic Toxicology Branch 1621 Mail Service Center Raleigh, North Carolina 27699-1621 Or, results can be sent to the email: ATFon ns.ATB@a ncdenr.gov. 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 10 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NCO026646 A. (6.) ELECTRONIC REPORTING - DISCHARGE MONITORING REPORTS [G.S. 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 special condition 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. Reaortin¢ Requirements ISuaersedes Section D. (2.) and Section E. (5.) (01 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. The eDMR system may be accessed at: https://deg.nc.gov/about/divisions/water-resources/edmr. 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 following address: NC DEQ / Division of Water Resources / Water Quality Permitting Section ATTENTION: Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 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: • Sewer Overflow/Bypass Event Reports; • Pretreatment Program Annual Reports; and Page 11 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NC0026646 • Clean Water Act (CWA) Section 316(b) Annual Reports. ➢ NPDES Electronic Reporting Rule — Phase 2 Extension. EPA is proposing to extend the Phase 2 deadline from December 21, 2020 until at least December 21, 2025. The current compliance date will be extended if the implementation date is extended as a final regulation change in the federal register. 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 In 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.federalreizister. gov/documents/2015/ 10/22/2015-24954/national-pollutant-discharpe- elimination-system-nodes-electronic-reportinR-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: Page 12 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F Permit NC0026646 http://deq.nc.gov/about/divisions/Water-resources/edmr. 4. Sienatory Requirements fSuaalements Section B. (11.) (b) and Supersedes Section B. (11.) (d)l 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. (I 1.)(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://deg.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: V 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 fSuaalements Section D. (6.)l 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 13 of 14 DocuSign Envelope ID: CO24B283-A77F-4674-B741-7F49A55E7B4F c q t,u • Outfall001 Permit NCO026646 i Pilot Mountain WW t e r' y 't i� V� r i ►MIN Nl 9I �,U, 11 C •' t Town of Pilot Mountain WWTP — NCO026646 Facility Location (Map not to scale) Receiving Stream: Ararat River Stream Class: C Drainage Basin: Yadkin Pee Dee River Basin Sub -Basin: 03-07-03 N Permitted Flow: 0.5 MGD HUC: 03040101 State Grid/USGS Quad: F16SE/ Siloam Latitude 36' 21' S9" N Longitude: 80° 32' 33" W Page 14 of 14