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Home My WebLink AboutNC0065480_Draft Permit_20190710 ROY COOPER f Governor t MICHAEL S. REGAN Secretary LINDA CULPEPPER •gip Director NORTH CAROLINA Environmental Quality July 10, 2019 Mr. Shannon Becker Aqua North Carolina, Inc. 202 Mackenan Court Cary,North Carolina 27511 Subject:DRAFT Permit Modification NPDES PERMIT NC0065480 Beau Rivage Plantation WWTP Grade II Biological WPCS [15A NCAC 08G .0302] New Hanover County Dear Mr. Becker: The Division has reviewed your request to modify the subject permit. Enclosed with this letter is a copy of the draft permit modification for your facility. Please review the draft very carefully to ensure thorough understanding of the conditions and requirements it contains. Summary of modifications to the existing permit: • The list of facility components on Supplement to Cover Page has been updated to include the components listed in your April 8, 2019 request for modification. • The appropriate HUC has been added to the outfall description on Supplement to Cover Page • The effluent table designated as"lasting until expansion above 0.100 MGD"has been removed. Limits for 0.200 MGD were put in place on June 1, 2018. • Due to addition of UV disinfection,the TRC footnote(footnote 2 for effluent tables in A.(1.),A.(2.), and A.(3.))was modified to specify that TRC Limit and Monitoring Requirements apply only if chlorine is added to disinfect. Please note that the Cape Fear River is listed as an impaired waterbody on the North Carolina 303(d) Impaired Waters List. Addressing impaired waters is a high priority with the Division, and instream data will continue to be evaluated. If there is noncompliance with permitted effluent limits and stream impairment can be attributed to your facility,then mitigative measures may be required. Please note that Cape Fear River is also a primary nursery area. Primary Nursery Areas, as defined by the Marine Fisheries Commission, are those areas in the estuarine system where initial post-larval development takes place. These areas are usually located in the uppermost sections of a system where populations are uniformly very early juveniles. The Division of Marine Fisheries is responsible for Q North Carolina Department of Environmental Quality I Division of Water Resources 1617 Mail Service Center I Raleigh,North Carolina 27699-1617 919-707-9125 preserving, protecting and developing Primary Nursery Areas for commercially important finfish and shellfish. With this notification, the Division will solicit public comment on this draft permit by publishing a notice in newspapers having circulation in the general Onslow 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 questions concerning the draft,please contact me via email at [emily.delduco@ncdenr.gov] or call 919-707-9125. Sincerely, Emily DelDuco Environmental Specialist II NPDES Program cc: NPDES files Permit NC0065480 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, Aqua North Carolina, Inc. is hereby authorized to discharge wastewater from a facility located at the Beau Rivage Plantation 6606 River Road Wilmington New Hanover County to receiving waters designated as the Cape Fear River in the Cape Fear River Basin in accordance with effluent limits, monitoring requirements, and other conditions set forth in Parts I, II, III and IV hereof. This permit shall become effective;---2019. This permit and authorization to discharge shall expire at midnight on August 31, 2022. Signed this day . DRAFT Linda Culpepper Director,Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 9 Permit NC0065480 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. Aqua North Carolina, Inc.is herebyauthorized to: q 1) Continue to operate an existing 0.200 MGD wastewater treatment facility (package plant) that includes the following components: • Mechanical fine screen with backup manual bar screen • 70,000—gallon aerated flow equalization tank(two 35,000-gallon chambers)with two flow EQ blowers • Flow control box • Two 100,000-gallon integrated fixed film activated sludge (IFAS) treatment trains with one 25,000-gallon aerated sludge holding/digesting/thickening tanks per train • 3 activated sludge process blowers • 3 sludge tank mixing and aeration blowers • 2 clarifiers • 2 clarifier air lift blowers • 2 tertiary fixed cloth media filters with automatic backwash controls • UV disinfection • 180 kW standby generator • Sodium hydroxide chemical feed system with duplex chemical feed pumps • Liquid chlorination system • De-chlorination system • Flow meter • Post-aeration • Cellular telemetry The facility is located at 6606 River Road, Wilmington, NC, at Beau Rivage Plantation in New Hanover County. 2) After receiving an A to C from the Division of Water Resources, upgrade the facility not to exceed 0.300 MGD. 3) After receiving an A to C from the Division of Water Resources, upgrade the facility not to exceed 0.500 MGD. 4) Discharge from said treatment works at the location specified on the attached map into the Cape Fear River,currently classified SC PNA waters in sub-basin 03-06-17(HUC: 030300050702)of the Cape Fear River Basin. Page 2 of 9 Permit NC0065480 Part I. A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS-0.2 MGD [15 NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade II Biological WPCS [15A NCAC 08G .0302] During the period beginning on the effective date of this permit and lasting until expansion above 0.200 MGD or until expiration, the permittee is authorized to discharge treated wastewater from outfall 001. Such discharges shall be limited and monitored'by the permittee as specified below: EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Monthly Daily Measurement Sample Sample eDMR Code Average Maximum Frequency Type Location Flow 0.200 MGD Continuous Recorder Influent or Effluent 50050 BOD,5-Day(20 Deg.C)-Summer* 5.0 mg/L 7.5 mg/L Weekly Composite Effluent 00310 BOD,5-Day(20 Deg.C)-Winter* 10.0 mg/L 15.0 mg/L Weekly Composite Effluent 00310 Total Suspended Solids 15.0 mg/L 22.5 mg/L Weekly Composite Effluent 00530 Nitrogen,Ammonia Total(as N)-Summer* 2.0 mg/L 10.0 mg/L Weekly Composite Effluent 00610 Nitrogen,Ammonia Total(as N)-Winter* 4.0 mg/L 20.0 mg/L Weekly Composite Effluent 00610 Total Residual Chlorine2 13.0 µg/L 2/Weekly Grab Effluent 50060 Temperature(°C) Weekly Grab Effluent 00010 Dissolved Oxygen Daily average>5.0 mg/L Weekly Grab Effluent 00300 pH >6.8 and<8.5 Weekly Grab Effluent 00400 Standard Units Phosphorus,Total(as P) Quarterly Composite Effluent 00665 Nitrogen,Total(as N)3 Quarterly Composite Effluent 00600 Enterococci,colony forming units 35/100m1 276/100 nil Weekly Grab Effluent 61211 (geom.mean) *Summer: April 1 —October 31 *Winter: November 1—March 31 Footnotes: 1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system[see A.(5)]. 2. Limit and monitoring requirements apply only if chlorine is added to disinfect. 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. 3. Total Nitrogen (TN) = TKN + NO3-N + NO2-N, where TKN is Total Kjeldahl Nitrogen and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively. All samples must be collected from a typical discharge event. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. Page 3 of 9 Permit NC0065480 A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS- 0.3 MGD [15 NCAC 02B .0400 et seq.,02B .0500 et seq.] Grade II Biological WPCS [15A NCAC 08G .0302] During the period beginning upon expansion to 0.300 MGD and lasting until expansion above 0.300 MGD or until expiration,the permittee is authorized to discharge treated wastewater from outfall 001. Such discharges shall be limited and monitored'by the permittee as specified below: EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Monthly Daily Measurement Sample Sample eDMR Code Average Maximum Frequency Type Location Flow 0.300 MGD Continuous Recorder Influent or 50050 Effluent BOD,5-Day(20 Deg.C)-Summer* 5.0 mg/L 7.5 mg 1_ Weekly Composite Effluent 00310 BOD,5-Day(20 Deg.C)-Winter* 10.0 mg/L 15.0 mg 1. Weekly Composite Effluent 00310 Total Suspended Solids 10.0 mg/L 15.0 mg/L Weekly Composite Effluent 00530 Nitrogen,Ammonia Total(as N)- Summer* 2.0 mg/L 10.0 mg,L. Weekly Composite Effluent 00610 Nitrogen,Ammonia Total(as N)-Winter* 00610 4.0 mg/L 20.0 mg/L Weekly Composite Lftluent Total Residual Chlorine 2 13.0 µg/L 2/Weekly Grab Effluent 50060 Temperature(°C) Weekly Grab Effluent 00010 Dissolved Oxygen Daily average>5.0 mg/L Weekly Grab Effluent 00300 pH >6.8 and<8.5 Weekly Grab Effluent 00400 Standard Units Phosphorus,Total (as P) 00665 Quarterly Composite Effluent Nitrogen,Total(as N)3 Quarterly Composite Effluent 00600 Enterococci,colony forming units 35/100m1 276/100 ml Weekly Grab Effluent 61211 (geom.mean) *Summer: April 1—October 31 *Winter: November 1—March 31 Footnotes: 1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system[see A.(5)]. 2. Limit and monitoring requirements apply only if chlorine is added to disinfect.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. 3. Total Nitrogen (TN) =TKN + NO3-N + NO2-N, where TKN is Total Kjeldahl Nitrogen and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively. All samples must be collected from a typical discharge event. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. Page 4 of 9 Permit NC0065480 A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS- 0.5 MGD [15 NCAC 02B .0400 et seq.,02B .0500 et seq.] Grade II Biological WPCS [15A NCAC 08G .0302] During the period beginning upon expansion above 0.300 MGD and lasting until expiration, the permittee is authorized to discharge treated wastewater from outfall 001. Such discharges shall be limited and monitored' by the permittee as specified below: EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Monthly Daily Measurement Sample Sample eDMR Code Average Maximum Frequency Type Location Flow Influent or 0.500 MGD Continuous Recorder 50050 Effluent BOD,5-Day(20 Deg.C)-Summer* 5.0 mg/L 7.5 mg/L Weekly Composite Effluent 00310 BOD,5-Day(20 Deg.C)-Winter* 00310 10.0 mg/L 15.0 mg/L Weekly Composite Effluent Total Suspended Solids 10.0 mg/L 15.0 mg/L Weekly Composite Effluent 00530 Nitrogen,Ammonia Total(as N)-Summer* 2.0 mg/L 10.0 mg/L Weekly Composite Effluent 00610 Nitrogen,Ammonia Total(as N)-Winter*00610 4.0 mg/L 20.0 mg/L Weekly Composite Effluent Total Residual Chlorine 2 13.0 µg/L 2/Weekly Grab Effluent 50060 Temperature(°C) 00010 Weekly Grab Effluent Dissolved Oxygen Daily average>5.0 mg/L Weekly Grab Effluent 00300 pH >6.8 and<8.5 00400 Standard Units Weekly Grab Effluent Phosphorus,Total(as P) 00665 Quarterly Composite Effluent Nitrogen,Total(as N)3 Quarterly Composite Effluent 00600 Enterococci,colony forming units 35/100mI 276/100 ml Weekly Grab Effluent 61211 (geom.mean) *Summer: April 1—October 31 *Winter: November 1—March 31 Footnotes: 1.The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system[see A.(5)]. 2. Limit and monitoring requirements apply only if chlorine is added to disinfect. 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. 3.Total Nitrogen(TN)=TKN+NO3-N+NO2-N,where TKN is Total Kjeldahl Nitrogen and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively. All samples must be collected from a typical discharge event. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. Page 5 of 9 Permit NC0065480 A. (4.) PERMIT RE-OPENER: SUPPLEMENTARY NUTRIENT MONITORING/TMDL IMPLEMENTATION [NCGS 143-215.1 (b)] Pursuant to N.C. General Statutes Section 143-215.1 and the implementing rules found in the North Carolina Administrative Code at 15A NCAC 2H.0112 (b) (1) and 2H.0114 (a) and Part II sections B- 12 and B-13 of this permit, the Director of DWR may reopen this permit to require supplemental nutrient monitoring of the discharge. The purpose of the additional monitoring will be to support water quality modeling efforts within the Cape Fear River Basin and shall be consistent with a monitoring plan developed jointly by the Division and affected stakeholders.In addition,the results of water quality modeling may require that limits for total nitrogen and total phosphorus be imposed in this permit upon renewal. 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. (5.) 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 The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application. Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with EPA's Cross-Media Electronic Reporting Regulation (CROMERR),permittees will be required to submit all discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR to the following address: NC DENR/Division of Water Resources/Water Quality Permitting Section ATTENTION: Central Files 1617 Mail Service Center Raleigh,North Carolina 27699-1617 Page 6 of 9 Permit NC0065480 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 p �'Y eP g � 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 Request Waiver from Electronic Reporting" section the mailing address above. See"How to qu aep g 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). 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: http://www2.epa.gov/compliance/final-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. Page 7 of 9 Permit NC0065480 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 4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) li 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. lam aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." 5. Records Retention [Supplements Section D. (6.)1 The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These records or copies shall be maintained for a period of at least 3 years from the date of the report. This period may be extended by request of the Director at any time [40 CFR 122.41]. 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