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HomeMy WebLinkAboutNC0086797_Draft Permit_20231113ROY COOPER Governor ELIZABETH S. BISER Secretary RICHARD E. ROGERS, JR. Dfrector Delane Jackson, Town Manager Town of River Bend 45 Shoreline Drive New Bern, NC 28562 Mr. Jackson: NORTH CAROLINA Environmental Quality November 14, 2023 Subject: Draft NPDES Permit NCO086797 Town of River Bend WTP 1 & 2 Grade I Physical/Chemical WPCS Craven County Attached with this letter is a copy of the Draft NPDES permit renewal for the Town's WTPs. Please review this draft carefully to ensure a thorough understanding of the requirements and conditions it contains. There are a few changes in the draft attached here from the existing permit. These changes and other considerations are summarized below. • Regulatory Citations - Language has been added where necessary in the permit to provide regulatory citations for permit requirements. This includes updates to citations that have been changed with recent rule revisions. • Electronic Reporting - Permit language has been modified to be consistent with the finalization of federal requirements for electronic reporting. • Duration of Flow - This parameter has been added as a monitoring parameter for reporting in the eDMR system. This parameter has been maintained separately in the past but should be reported along with other Discharge Monitoring data in the electronic system. • Supplement to Permit Cover Sheet — In this section of the permit the potable flow rate and monthly average wastewater discharge have been updated for each WTP. • Nutrient Management Re -Opener — A Special Condition [A.(3.)] has been added to the permit to address re -opening of the permit for the potential inclusion of additional nutrient control requirements. • Whole Effluent Toxicity — The special condition language for this condition has been updated including the addition of an electronic submittal option for the AT-2 form. • Map Update — Permit map information has been updated including outfall . 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. North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 NORTH WOONA DeFa nemnlEnvi---i0- 919.707.9000 Delano Jackson Town of River Bend WWTP Page 2 Concurrent with this notification the Division is publishing a notice in a newspaper having general circulation in the Craven 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 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(&deq.nc.gov or at (919) 707-3629. 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: Brandon Mills — Town of River Bend - electronic NPDES Files - electronic Washington Regional Office / Water Quality — electronic Operator Certification Program/Jeffrey Talbott — electronic Aquatic Toxicity Branch / Cindy Moore and Molly Nicholson - electronic Draft Permit NCO086797 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 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 River Bend is hereby authorized to discharge wastewater from a facility located at the Town of River Bend WTP 1 & 2 Shoreline Drive, River Bend Craven County to receiving waters designated as Plantation Canal from Outfall 001 and as unnamed tributary to Plantation Canal from Outfall 002 in the Neuse River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, and III hereof. This permit shall become effective This permit and authorization to discharge shall expire at midnight on May 31, 2028. 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 December 3, 2027 (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 9 Draft Permit NCO086797 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. Town of River Bend is hereby authorized to: Continue to operate a Water Treatment Plant (WTP#1) with a discharge of treated backwash/rinse wastewater from Sand Filtration units through Outfall 001. This water treatment plant currently has a design potable flow rate of 0.60 MGD and a maximum, monthly average wastewater discharge of 0.014 MGD. This facility is located at Town of River Bend WTP#I, 52 Shoreline Dr., River Bend in Craven County and water and wastewater treatment consist of: • Raw well water caustic addition systems • Raw well air injection systems • One (1) 8 ft. diameter sand filter tank • One (1) 10 ft. diameter sand filter tank • Potable water ortho phosphate addition system • Potable water chlorination system • Wastewater dechlorination system • 5,000-gallon backwash/rinse wastewater settling basin with pump • Effluent meter 2. Continue to operate a Water Treatment Plant (WTP#2) with a discharge of treated backwash/rinse wastewater from Sand Filtration units through Outfall 002. This water treatment plant currently has a design potable flow rate of 0.35 MGD and a maximum, monthly average wastewater discharge of 0.011 MGD. This facility is located at Town of River Bend WTP#2, 27 Shoreline Dr., River Bend in Craven County and water and wastewater treatment consist of. • Raw well water caustic addition system • Raw well air injection system • Two (2) 4.5 ft. diameter sand filter tanks • Two (2) 6 ft. diameter sand filter tanks • Potable water ortho phosphate addition system • Potable water chlorination system • Wastewater dechlorination system • 5,000-gallon backwash/rinse wastewater settling basin with pump • Effluent meter 3. Discharge from said treatment works at the locations specified on the attached map, Outfall 001 into Plantation Canal and Outfall 002 into an unnamed tributary to Plantation Canal, both receiving streams draining to the Trent River [Stream Index: 27-101-(31)], and classified SB Swamp, NSW waters in sub -basin 03-04-11 [HUC: 030202040302] of the Neuse River Basin. Page 2 of 9 Draft Permit NCO086797 PART I. A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS -DRAFT [15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.] Grade I Physical / Chemical WPCS [15A NCAC 08G .0306] During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge treated sand filtration backwash/rinse wastewater from Outfalls 001 and 002. Such discharges shall be limited and monitored' by the Permittee as specified below for each outfall: EFFLUENT CHARACTERISTICS eDMR CODES EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Monthly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow', MGD 50050 2/Month Instantaneous Effluent Duration of Flow Hours 81381 2/Month Instantaneous Effluent Total Suspended Solids TSS C0310 30 mg/L 45 mg/L 2/Month Grab Effluent Total Residual Chlorines TRC 50060 13 µg/L 2/Month Grab Effluent H 00400 >6.8 and < 8.5 Standard Units 2/Month Grab Effluent Turbidity, NTU 00070 Monitor & Report 2/Month Grab Effluent Total Manganese, /L 01055 Monitor & Report Quarterly Grab Effluent Total Nitrogen a (TN), mg/ L C0600 Monitor & Report Semi-annual Grab Effluent Total Phosphorus, m /L C0665 Monitor & Report Semi-annual Grab Effluent Acute WET testing TGE3E See Footnote 5 Quarterly Grab Effluent Footnotes: 1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR application system [see A. (4)]. 2. For instantaneous flow monitoring, the duration of the discharge must be reported in addition to the total flow. 3. 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. 4. TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N + NO2-N are Nitrate and Nitrite Nitrogen respectively. 5. Whole Effluent Toxicity (WET) testing - testing ofMysidopsis bahia shall be performed as 24-day pass/fail test at 90% effluent concentration, during March, June, September and December [See A. (2.)]. All samples collected must be from a representative discharge event. There shall be no discharge of floating solids or visible foam in other than trace amounts. Page 3 of 9 Draft Permit NCO086797 A. (2.) ACUTE TOXICITY PASS/FAIL LIMIT (QUARTERLY) [15A NCAC 02B .0500 et seq. 15A NCAC 02B .0200 et seq.] The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North Carolina Procedure Document entitled "Pass/Fail Methodology for Determining Acute Toxicity In A Single Effluent Concentration" (Revised December 2010, or subsequent versions). The monitoring shall be performed as a Mysid Shrimp (Mysidopsis bahia) 24-hour static test. The effluent concentration at which there may be at no time significant acute mortality is 90% (defined as treatment two in the procedure document). 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. Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will revert to quarterly in the months specified above. All toxicity testing results required as part of this permit condition will be entered electronically using the Division's eDMR system for the month in which it was performed, using the parameter code TGE3E. Additionally, DWR Form AT-2 (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, ATForms.ATBkdeq.nc.gov. 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, then monthly monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will revert to quarterly in the months specified above. 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. Page 4 of 9 Draft Permit NCO086797 Should any test data from either these monitoring requirements 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 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. (3.) PERMIT RE -OPENER: NUTRIENT MANAGEMENT [NCGS 143-215.1 (b)] a) Pursuant to N.C. General Statues Section 143-215.1 and implementing rules found in Title 15A of North Carolina Administrative Code, Subchapter 02H, specifically, 15A NCAC 02H.0112(b)(1) and 02H.0114(a), and Part II, Sections B.12 and B.13. of this Permit, the Director of DWR may reopen this permit to require nutrient management measures for the discharge. The results of water quality monitoring, modelling or other evaluations may require that conditions for total nitrogen and total phosphorus control be imposed on this permit. b) The Division may, upon written notification to the permittee, re -open this permit in order to incorporate or modify effluent limits, monitoring and reporting requirements, and other permit conditions when it deems such action is necessary to implement TMDL(s) approved by the USEPA. A. (4.) ELECTRONIC REPORTING OF 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. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)l 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 Page 5 of 9 Draft Permit NC0086797 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. 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. 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: Page 6 of 9 Draft Permit NC0086797 https://www.federalre ig ster.gov/documents/20l5/lO/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 temporary electronic reporting waiver are found on the following web page: hLtp://deq.nc.gov/about/divisions/water-resources/edmr 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. (I 1.)(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: hqp://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: 7 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 Page 7 of 9 Draft Permit NCO086797 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.)] 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 8 of 9 CATEWOOP 8R t ROCKL.EQGd y lap yu # -+ -or_ w+ r Town of River Bend River Bend WTPs 1 & 2 Receiving Stream: Trent River Stream Class: SB; Sw; NSW River Basin: Neuse Sub -Basin: 03-04-011 Outfall 1 Latitude: 35' 04' 27" Outfall 2 Latitude: 35' 04' 31" Longitude: 77' 08' 43" Longitude: 77' 09' 10" Discharge to: Plantation Canal Discharge to: UT to Plantation Canal Stream Segment 27-101-(31) HUM 030202040302 Grid/Quad: G30SW/Pollocksville County: Craven . _j q Cl- 1tY W Ap Business 13' F Plantation Canal 'Crent Woods a` W6 Facility LOCATION (not to scale) NPDES Permit NCO086797 Page 8 of 9