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HomeMy WebLinkAboutNC0082384_Draft Permit_20220920 ROY COOPER Governorir ` ELIZABETH S.BISER Secretary RICHARD E.ROGERS,JR. NORTH CAROLINA Director Environmental Quality September 20,2022 Stewart Easter Public Works Director Stokes County P.O.Box 20 Danbury,NC 27016 Subject: Draft NPDES Permit NC0082384 Danbury WWTP Grade II Biological WPCS Stokes County Dear Mr.Easter: Attached 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. We understand from your renewal application that there have been no treatment system changes. There are a few changes in the draft attached here from the existing permit. These changes are summarized below. • Regulatory Citations-Language has been added where necessary in the permit to provide regulatory citations for permit requirements. • Electronic Reporting-Permit language has been modified to be consistent with the finalization of federal requirements for electronic reporting. • Map Update—Descriptive information on the permit map has been updated to locate the outfall and WWTP in accordance with the information you provided in your application. The NPDES standard conditions(Parts II,III,and IV)that are a part of the permit are not included in this draft document(cover,map,and Part I).The conditions are the same as in your current permit. The latest version of the standard conditions is available at https://bit.ly/3k5NFaL and can be viewed online or downloaded as a PDF file. Concurrent with this notification the Division is publishing a notice in a newspaper having general circulation in the Stokes County area soliciting public comments on this draft permit. Please provide any written comments you may have to me no later than 30 days after receipt of this draft permit Q NorthNorth CarolinaSalisbury DepartStreet ment of1617 EnviroMailnmentalServiceCe Quality I DivisionRaleigh.North of WaterCarolina ResouZ7rces 512 699i617 ."+��1a+;\/''� 919.7079000 Stewart Easter Danbury WWTP Page 2 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 contact me by email at bradley.bennett@ncdenr.gov. At this time,contact by email is the most effective method. If we need to set up a call to discuss any issues,we can set that up through email. Sincerely, Bradley Bennett Compliance and Expedited Permitting Unit cc: NPDES Files-electronic Winston-Salem Regional Office/Water Quality—electronic Operator Certification Program/Maureen Kinney—electronic Draft Permit NC0082384 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, Stokes County is hereby authorized to discharge wastewater from a facility located at the Danbury WWTP NC Highway 89 Danbury Stokes County to receiving waters designated as the Dan River in the Roanoke 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 February 28,2027. If the permittee intends to continue discharging at the facility beyond the term of this permit,a renewal application must be submitted no later than September 1,2026(180 days before the expiration of this permit) Signed this day Richard E Rogers,Jr.,Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 7 Draft Permit NC0082384 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 County of Stokes is hereby authorized to: 1. Continue to operate an existing 0.100 MGD wastewater treatment system with the following components: • Manual bar screen • Aerated flow equalization chamber with dual pumps • Dual aeration basins with three blowers • Dual hopper bottom clarifiers • Aerobic sludge digester • 3 module ultraviolet disinfection system • Flow measurement&recording • Duplex submersible effluent pump station The facility is located in Danbury at the Danbury WWTP on NC Highway 89 in Stokes County. 2. Discharge from said treatment works at the location specified on the attached map into the Dan River[stream ID:22-(8)],currently classified WS-V waters in sub-basin 03-02-01 [HUC: 030101030109]of the Roanoke River Basin. Page 2 of 7 Draft Permit NC0082384 PART I A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.] During the period beginning on the effective date of the permit and lasting until expiration,the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below: EFFLUENT LIMITS MONITORING REQUIREMENTS CHARACTERISTICS Monthly Weekly Measurement Sample Sample eDMR Code Average Average Frequency Type Location Flow 50050 0.100 MGD Continuous Recording Influent or Effluent BOD,5-day(20°C)' C0310 30.0 mg/L 45.0 mg/L Weekly Composite Influent&Effluent Total Suspended Solids2 C0530 30.0 mg/L 45.0 mg/L Weekly Composite Infkient&Effluent NH3 as N(mg/L) C0610 Monitor and Report Weekly Composite Effluent Fecal(geometric 31616 200/100 ml 400/100 ml Weekly Grab Effluent (geometric c mean) Total Residual Chlorine' 50060 Daily Maximum 28 ug/L 2/Week Grab Effluent Temperature(°C) 00010 Monitor and Report Daily Grab Effluent Total Nitrogen(mg/L) C0600 Monitor and Report Quarterly Composite Effluent Total Phosphorus(mg/L) C0665 Monitor and Report Quarterly Composite Effluent pH 00400 Not<6.0 nor>9.0 Weekly Grab Effluent Standard Units Footnotes: 1. The pennittee shall submit discharge monitoring reports electronically using the Division's eDMR system[see A.(2)]. 2. The monthly average effluent BOD;and Total Suspended Solids concentrations shall not exceed 15%of the respective influent value(85%removal). 3. Total Residual Chlorine shall be monitored only if Chlorine is added to the disinfection process. The Division shall consider all effluent TRC values reported below 50 ug/L to be in compliance with the permit. However,the Pemmittee 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 mg/L. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS Page 3 of 7 Draft Permit NC0082384 A.(2) ELECTRONIC REPORTING OF DISCHARGE 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 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/divisians/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. Monitoring results obtained during the previous month(s)shall be summarized for each month and reported via the eDMR system no later than the last calendar day of the month following the completed reporting period. 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. Page 4 of 7 Draft Permit NC0082384 Starting on December 21, 2025, 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). 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-rile 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 5 of 7 Draft Permit NC0082384 4. Signatory Requirements ISum:dements 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.)I 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 6 of 7 Scott.Lakc g i MEADOW Ri �S, ri - Q� — --\c7 Q �� i i% PO F l f�/' h��v DISCHARGE . I Q_, POINT _101ll (. Danbury WWTP O H'CKS_FARM RD S 900---- - 900 Dan River e: , (....\CA) r----700 /0 8L �J ` o �b 89 \/— -) ---\__,. ...j ' )oct, ('Ql�1E'lUt LCAUD/LLLH 900 U It0 4-- - IV 0 0 1 1 S La k ej_ 0' County of Stokes Facility Danbury WWTP Location Receiving Stream: Dan River Stream Class: WI-V (nnt to ar tIn River Basin: Roanoke Sub-Basin: 03-02-01 Latitude: 36`24'33" Longitude: 80`11'45" Stream Segment 22-(8) HUC#: 030101030109 ]NORTH NPDES Permit: NC0082384 Grid/Quad: B18NW/Danbury County: Stokes Page 7 of 7