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Home My WebLink AboutNC0029033_Draft Permit_20240528ROY COOPER Governor ELIZABETH S. B1SER Secretary RICHARD E. ROGERS, JR. Director Ms. Erika L. Bailey, PE Assistant Director City of Raleigh P.O. Box 590 Raleigh, North Carolina 27602 Dear Ms. Bailey: NORTH CAROLINA Environmental Quality May 28, 2024 Subject: Draft NPDES Permit Modification Permit NCO029033 Neuse River RRF Wake County Grade IV Biological WPCS SIC Code 4952 The Division of Water Resources staff has reviewed your March 27, 2024 request for modification of the Neuse River RRF's NPDES permit to revise the City's Total Nitrogen loading limitation to reflect the transfer of allocation from International Paper Company (NC0003191) to your permit. Your total nitrogen allocation is increased from 687,373 lb/year lb/yr to 717,373 lb/yr, reflecting the transfer of 30,000 lb/yr. Enclosed with this letter is a copy of the Draft NPDES permit modification for your facility, with revisions to Section A.(1.) Effluent Limitations and Monitoring Requirements [Page 3] and Special Condition A.(6.) Total Nitrogen Allocations [Page 7]. Please review this draft modification carefully to ensure thorough understanding of the requirements and conditions it contains. 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 except that agency and division names have been updated. The latest version 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 circulation in the general Wake County area, soliciting public comments on this draft permit. Please provide any written comments you may have to the following: NCDEQ/DWR, NPDES Permitting Branch, 1617 Mail Service Center, Raleigh, NC 27699-1617 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 call me at (919) 707-3609 or by email at nick.coco@deq.nc.gov. Sincerely, �USIgned by: E4?0OA4FBFCA14FD l..e. ... Nick Coco, P NPDES Municipal Permitting Unit Hardcopy: NPDES Files Ecopy: US EPA Region 4 DWR/Raleigh Regional Office/Water Quality/Scott Vinson & Vanessa Manuel DWR/Basin Planning Branch/Nora Deamer North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611 4�� 919.707.9000 Permit NCO029033 PART A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] a. Beginning on the effective date of this permit and lasting until permit 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 LIMITATIONS MONITORING REQUIREMENTS PARAMETER Monthly Weekly Daily Measurement Sample Sample Parameter Code Avera a Averacie Maximum Frequency Type Z Flow 50050 75.0 Continuous Recording I or E Total Monthly Flow, 82220 MG/month Monitor and Report Monthly Recorded or Calculated I or E BOD5 (20°C) 3 tYJ310 5.0 mg/L 7.5 mg/L 2/Week4 Composite I and E (April 1 - October 31) BOD5 (20*C) 3 C0310 10.0 mg/L 15.0 mg/L 2/Week4 Composite I and E (November 1 - March 31) Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L 2/Week4 Composite I and E Ammonia (NH3 as N) C0610 1.0 mg/L 3.0 mg/L 2/Week-4 Composite E (April 1 - October 31) Ammonia (NH3 as N) C0610 2.0 mg/L 6.0 mg/L 2/Week4 Composite E (November 1 - March 31) Dissolved Oxygen 00300 Daily Average >_ 5.0 mg/L Daily Grab E Fecal Coliform 31616 200/100 mL 400/100 mL 2/Week4 Grab E (geometric mean) Temperature, °C 00010 1 Daily Grab E pH 00400 Between 6.0 and 9.0 standard units Daily Grab E TKN (mg/L) 5 00625 Monitor and Report Weekly Composite E NO3-N + NO2-N (mg/L) 5 00630 Monitor and Report Weekly Composite E TN (mg/L) 5 C0600 Monitor and Report Weekly Composite E TN Loadwwry 6 QM600 Monitor and Report (lb/mo) Monthly Calculated E QY600 Monitor and Report (lb/yr) Annually Calculated E TN LoadTotai 6 QY600 687,373 Ib/vear (eff. through 12/31/24) Annually Calculated E 717.373 lb/year (effective 111/20251 Total Phosphorus C0665 2.0 mg/L (quarterly average) 7 Weekly Composite E Total Hardness [as 00900 CaC031, mg/L8 Monitor and Report p Quarterly Q y Composite E Chronic Toxicity9 TGP3B See Note 9 Quarterly Composite E Effluent Pollutant Scan NC01 Monitor and Report Footnote 10 E Total Hardness [as 00900 Monitor and Report p uarterl Q y Grab U CaC031, mg/L" Footnotes: 1. The Permittee shall submit discharge monitoring reports electronically using NC DWWs eDMR application system. See Special Condition A.(9.). 2. Sample Locations: I - Influent, E - Effluent, U - Upstream. See Condition A.(2.) of this permit for instream monitoring requirements. 3. The monthly average effluent B0135 and TSS concentrations shall not exceed 15% of the respective influent value (85% removal). 4. 2/ Week sampling must occur on any two non-consecutive days during the calendar week. 5. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively. 6. TN Loads shall be calculated as prescribed in Condition A.(3.) and A.(5.) of this permit, and compliance with the TN limit shall be determined according to Conditions A.(4.) and (5.). Page 3 of 13 Michael Montebello, NPDES Branch Chief Modification Effective Date: Month xx, 2024 f 0 -Tins010101-M10.1.1 A.(6.) TOTAL NITROGEN ALLOCATIONS [G.S. 143-215.1(b)] a. The following table lists the Total Nitrogen (TN) allocations assigned to, acquired by, or transferred to the Permittee in accordance with the Neuse River nutrient management rule (1`15A NCAC 02B .0234) and the status of each as of permit issuance. For compliance purposes, this table does not supersede any TN limit(s) established elsewhere in this permit or in the NPDES permit of a compliance association of which the Permittee is a Co-Permittee Member. ALLOCATION AMOUNT 1 ALLOCATION SOURCE DATE STATUS TYPE Estuary Discharge (lb/yr) (lb/yr) Base Assigned by Rule 12/7/1997, 337,895 675,790 Active J15A NCAC 02B .0234) 4/1/2003 Connection of Bobby L. Supplemental Murray Plantation Inn WWTP 253 506 Active NCO027570 Supplemental Connection of Falls Village 61 121 Active WWTp NCO046230 Supplemental Connection of Neuse Crossing 1/14/2008 3,033 6,066 Active WWTP NCO064408 Supplemental Purchase from SGWASA, 6/12/2012 2,445 4,890 Active NCO026824 Supplemental Purchase from International 3 19 2024 15.000 00� Active Paper Company, NC0003191 _30 TOTAL 348,687 717,373 Footnote: 1. Transport Factor = 50% b. Any addition, deletion, or modification of the listed allocations (other than typographical errors) or any change in 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.(7.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) [15A NCAC 02B .0200 et seq.] The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 54%. The permit holder shall perform at a minimum, agu rterlU 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 February, May, August, and November. 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 Page 7 of 13 Michael Montebello, NPDES Branch Chief Modification Effective Date: Month xx, 2024