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HomeMy WebLinkAboutNC0020061_Draft Permit_20200224 ROY COOPER STATE Governor d °r�•; MICHAEL S. REGAN Secretary S. DANIEL SMITH 5l � / Director N1 !!s'• / YY •a NORTH CAROLINA Environmental Quality February 24, 2020 Ms. Sherry W. Freeman, Secretary Town of Spring Hope P.O. Box 87 Spring Hope,NC 27882-0087 Subject: Draft NPDES Permit NC0020061 Spring Hope WWTP Nash County Grade I Biological WPCS Dear Permittee: The Division has reviewed your request to renew the subject permit. Please review this draft carefully to ensure your thorough understanding of the information,conditions,and requirements it contains. The draft permit includes the following significant changes from the existing permit: • Section A. (6.)has been updated to require electronic submission of effluent data reports(DMRs). Federal regulations require electronic submittal of all discharge monitoring. • An updated outfall map has been included. With this notification,the Division will solicit public comment on this draft permit by publishing a notice in newspapers having circulation in the general Davidson County area,per EPA requirements.Please provide your comments,if any,to me no later than 30 days after receiving 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 any questions concerning this permit,please contact Emily Phillips at emily.phillipsAncdenr.gov or(919)707-3621. Sincerely, Emily Phillips Compliance and Expedited Permitting Unit cc: NPDES files State of North Carolina I Environmental Quality I Water Resources 1617 Mail Service Center I Raleigh,NC 27699-1617 919-807-6300 919-807-6389 FAX https://deq.nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits Permit NC0020061 Grade I Biological Water Pollution Control System[15A NCAC 08G.0302] 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 Town of Spring Hope from a facilitylocated at the is herebyauthorized to discharge wastewater g Spring Hope WWTP NC Highway 581 Spring Hope Nash County to receiving waters designated as the Tar River in the Tar-Pamlico 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 This permit and authorization to discharge shall expire at midnight on October 31, 2024. Signed this day S. Daniel Smith, Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 9 Permit NC0020061 Grade I Biological Water Pollution Control System[15A NCAC 08G.0302] 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 Spring Hope is hereby authorized to: 1. Continue to operate a 0.40 MGD wastewater package treatment system with the following components: • Mechanical and manual bar screens • Manual grit removal • Influent ultrasonic flow meter • 2 -Aeration chambers • 2 - Circular clarifiers • 1 -Aerobic digester • 2 -Tertiary clarifiers (previously secondary clarifiers from old WWTP) • Chlorination equipment • Cascade aeration • De-chlorination equipment This facility is located at the Spring Hope WWTP in Spring Hope on NC Highway 581 in Nash County. 2. Discharge from said treatment works at the location specified on the attached map into the Tar River, currently classified WS-V; NSW waters in sub-basin 03-03-02 of the Tar-Pamlico River Basin. Page 2 of 9 Permit NC0020061 Grade I Biological Water Pollution Control System[15A NCAC 08G .0302] PART I. A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below: EFFLUENT LIMITS MONITORING REQUIREMENTS CHARACTERISTICS Monthly Average Weekly Measurement Sample Sample Parameter Codes Average Frequency Type Location Flow 0.40 MGD Continuous Recording Influent or Effluent 50050 BOD, 5-day(20°C)2 30.0 mg/L 45.0 mg/L Weekly Composite Influent&Effluent C0310 Total Suspended Solids2 30.0 mg/L 45.0 mg/L Weekly Composite Influent&Effluent C0530 NH3 as N 2/Month Composite Effluent C0610 Fecal Coliform (geometric mean) 200/100 ml 400/100 ml Weekly Grab Effluent 31616 Total Residual Chlorine3 Daily Maximum 28 µg/L 2/Week Grab Effluent 50060 Temperature(°C) Daily Grab Effluent 00010 Total Nitrogen (NO2-N+NO3-N+TKN) Monitor&Report Weekly Composite Effluent C0600 TN Load 4 Monitor&Report(Ib/mo) Monthly Calculated QY600 5,705 1 bs/year Effluent Annually Calculated QM600 (effective 1/1/2016)5 Nitrate/Nitrite Nitrogen (NO2-N+NO3-N) Weekly Composite Effluent C0630 Total Kjeldahl Nitrogen (TKN) Weekly Composite Effluent C0625 Total Phosphorus Weekly Composite Effluent C0665 TP Load 4 Monitor&Report(lb/mo) Monthly Calculated QY665 1,031 1bs/year Effluent Annually Calculated QM665 (effective 1/1/12016)5 Total Mercury6 Monitor&Report within last 12 1/Cycle Grab Effluent COMER months of permit cycle pH Not less than 6.0 S. U. nor Weekly Grab Effluent 00400 greater than 9.0 S. U. Page 3 of 9 Permit NC002006I Grade I Biological Water Pollution Control System[15A NCAC 08G.0302] Footnotes: 1. The Permittee shall submit discharge monitoring reports electronically using the Division's eDMR system [see A.(6.)]. 2. The monthly average effluent GODS and Total Suspended Solids concentrations shall not exceed 15%of the respective influent value(85%removal). 3. Total Residual Chlorine monitoring is required only if chlorine or chlorine derivative is added during the treatment process. The Division shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with the permit. However,the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory(including field certified),even if these values fall below 50 µg/l. 4. TN or TP Load is the mass quantity of Total Nitrogen or Total Phosphorus discharged in a given period of time. See Special Condition A.(2.)Calculation of TN or TP Loads. 5. Compliance with mass limits shall be determined in accordance with Special Condition A.(3.)Annual Limits for Total Nitrogen or Total Phosphorus. 6. Based on the completion and approval of the N.C. Statewide mercury total Maximum Daily Load(TMDL),the permit now requires one mercury analysis,using EPA Method 1631 E,which must be completed within the twelve(12)months prior to the next permit renewal. This requirement is included on the effluent page and in the new Special Condition A.(5.). THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. A.(2.) CALCULATION OF TOTAL NITROGEN AND TOTAL PHOSPHORUS LOADS [G.S. 143-215.1(b)] (a.) The Permittee shall calculate monthly and annual TN Loads as follows: (i.) Monthly TN(or TP) Load(lb/mo)=TN(or TP) x TMF x 8.34 where: TN or TP = the average Total Nitrogen or Total Phosphorus concentration(mg/L)of the composite samples collected during the month TMF = the Total Monthly Flow of wastewater discharged during the month(MG/mo) 8.34 = conversion factor,from(mg/L x MG)to pounds (ii.) Annual TN(or TP)Load(lb/yr)= Sum of the 12 Monthly TN(or TP)Loads for the calendar year (b.) The Permittee shall report monthly Total Nitrogen and Total Phosphorus results(mg/L and lb/mo)in the appropriate discharge monitoring report for each month and shall report each calendar year's results(lb/yr)with the December report for that year. A.(3.) ANNUAL LIMITS FOR TOTAL NITROGEN OR TOTAL PHOSPHORUS [G.S. 143-215.1(b)] (a.) Total Nitrogen(TN)and Total Phosphorus(TP)allocations and load limits for NPDES dischargers in the Tar-Pamlico River basin are annual limits and apply on a calendar year basis. (b.) For any given calendar year,the Permittee shall be in compliance with the annual TN(or TP) Load limit in this Permit if: (i.) the Permittee's annual TN(or TP)Load is less than or equal to the effective limit, or Page 4 of 9 Permit NC0020061 Grade I Biological Water Pollution Control System[15A NCAC 08G.0302] (ii.) the Permittee is a Co-Permittee Member of a compliance association. (c.) If the Permittee is not a co-permittee member of a compliance association and the Permittee's cumulative annual TN(or TP)discharge exceeds the effective TN(or TP)Load limit in this permit at any point during the calendar year,the Permittee is in violation of its TN(or TP)Load limit for the remainder of the calendar year,and each day of continuing violation shall constitute a separate violation. Compliance with annual limits shall be determined separately for each calendar year,and an exceedance in one year does not carry forward to subsequent years. (d.) The TN(or TP)Load limit in this Permit(if any)may be modified as the result of allowable changes in the Permittee's allocations. (i.) Allowable changes include those resulting from purchase of TN(or TP)allocation from an authorized mitigation banker,the Ecosystem Enhancement Program, or other source allowed under applicable regulations;purchase, sale,trade,or lease of allocation between the Permittee and other dischargers; and other transactions approved by the Division and consistent with the Tar-Pamlico River Basin Association Agreement,as revised. (ii.) The Permittee may request a modification of the TN(or TP)Load limit in this Permit to reflect allowable changes in its allocation(s).Upon receipt of timely and proper application, the Division will modify the permit as appropriate and in accordance with state and federal program requirements. (iii.) Changes in TN(or TP)limits become effective on January 1 of the year following permit modification.The Division must receive application no later than August 31 for changes proposed for the following calendar year. (iv.) Application shall be sent to: NCDWR/Wastewater Permits Branch Attn: Tar-Pamlico River Basin Coordinator 1617 Mail Service Center Raleigh,NC 27699-1617 (e.) If the Permittee is a member and co-permittee of an approved compliance association on January 1 of a given year, its TN and TP discharges during that year are governed by that association's group NPDES permit and the limits therein. (i.) The Permittee shall be considered a Co-Permittee Member for any given calendar year in which it is identified as such in Appendix A of the association's group NPDES permit. (ii.) Association roster(s)and members'TN and TP allocations will be updated annually and in accordance with state and federal program requirements. (iii.) If the Permittee intends to join or leave a compliance association,the Division must be notified of the proposed action in accordance with the procedures defined in the association's NPDES permit. (A) Upon receipt of timely and proper notification,the Division will modify the permit as appropriate and in accordance with state and federal program requirements. (B) Membership changes in a compliance association become effective on January 1 of the year following modification of the association's permit. (f.) The TN and TP monitoring and reporting requirements in this Permit remain in effect throughout the term of the Permit and are not affected by the Permittee's membership in a compliance association. Page 5 of 9 Permit NC0020061 Grade I Biological Water Pollution Control System[15A NCAC 08G.0302] A.(4.) NUTRIENT ALLOCATIONS [G.S. 143-215.1(b)] (a.) Total Nitrogen(TN)and Total Phosphorus(TP)allocations represent the maximum TN and TP loads that a discharger or group of dischargers is potentially allowed under the Tar-Pamlico nutrient management strategy.Allocations are not enforceable limits but are the basis for TN and TP limits established in individual or group NPDES permits. (b.) The allocations originally assigned to the Tar-Pamlico Basin Association members total 889,274 lb/yr kg/yr)TN and 160 372 (404,274 lb/yr(73,060 kg/yr)TP.These group allocations have been divided among the members in proportion to the maximum permitted flow in each member's permit; that is, Individual Allocatian(TN or Ti')= lmdividual Permitted Flow(MOD) x GroupAllocation,TPBA Total Permitted Flow,TPBA(MGD) (TN or TP) For the purposes of this distribution, individual permitted flows for the Association members are those in effect as of July 2014 and result in a Total Permitted Flow of 62.495 MGD. (c.) The following table lists, for information purposes only,the TN and TP allocations assigned to, acquired by, or transferred to the Permittee in accordance with the Tar-Pamlico River Basin Phase IV Agreement. Applicable TN or TP limits are established in the Effluent Limitations conditions of this permit or in the NPDES permit of a compliance association of which the Permittee is a Co-Permittee Member. ALLOCATION SOURCE DATE ALLOCATION AMOUNT(1) STATUS TYPE (Ib/yr) (kg/yr) Tar-Pamlico River Total Nitrogen Basin Phase IV 7/9/2015 123,456 345,678 Active Agreement Tar-Pamlico River Total Phosphorus Basin Phase IV 7/9/2015 2,816 5,632 Active Agreement (d.) Any addition,deletion, or modification of the listed allocation(s)(other than to correct typographical errors)or any change from Reserve to Active status of any of the listed allocations shall be considered a major modification of this permit and shall be subject to the public review process afforded such modifications under state and federal rules. A. (5.) EFFLUENT MERCURY ANALYSIS [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] The Permittee shall provide one effluent mercury analysis, using EPA Method 1631 E, in conjunction with the next permit renewal application. The analysis should be taken within 12 months prior to the application date. Any additional effluent mercury measurements conducted from the effective date of this permit and up to the application date shall also be submitted with the renewal application. If the result of the mercury analysis is not provided with the application, the application may be returned as incomplete and the Permittee considered non-compliant. Page 6 of 9 Permit NC0020061 Grade I Biological Water Pollution Control System[15A NCAC 08G.0302] 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 fmal 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. 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. The eDMR system may be accessed at: https://deq,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 • 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). Page 7 of 9 Permit NC0020061 Grade I Biological Water Pollution Control System[15A NCAC 08G.0302] 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.federalregister.gov/documents/2015/10/22/2015-24954/national-pollutant- discharge-elimination-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 temporaryelectrons electronic reporting waiver are found on the following web page: http://deq.nc.gov/about/divisions/water-resources/edmr 4. Siviatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) 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 Page 8 of 9 Permit NC0020061 Grade I Biological Water Pollution Control System[15A NCAC 08G.0302] 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. lam aware that there are significant penalties for submitting false information, including the possibility offines and imprisonment for knowing violations." 5. Records Retention [Supplements Section D. (6.)] 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 9 of 9 I j)„. 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Latitude: 35°54' 19" Longitude: 78°06'46" NORTH NPDES Permit: NC0020061