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Home My WebLink AboutNC0066516_Permit (Issuance)_20230811DocuSign Envelope ID: 1CDB5CC5-DB2A-4CO8-82F9-3548AE36ABOD ROY COOPER Governor ELIZABETH S. BISER Secretary RICHARD E. ROGERS, JR. Director Ms. Heather Adams Assistant Public Utilities Director Town of Fuquay-Varina 134 N. Main Street Fuquay-Varina, North Carolina 27526 Dear Ms. Adams: NORTH CAROLINA Environmental Quality August 11, 2023 Subject: NPDES Permit Minor Modification Permit NCO066516 Terrible Creek WWTP Grade IV Biological WPCS Wake County SIC Code 4952 Division personnel have reviewed and approved your application for a minor modification of the subject permit. We are forwarding you the new Section A. (L) Effluent Limitations and Monitoring Requirements page with footnotes. You should replace your existing Effluent Limitations and Monitoring Requirements sheet with this revised page, effective 9/l/2023. This permit revision is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). DWR guidance regarding the reduction of monitoring frequencies in permits for exceptionally performing facilities is for NPDES permits only and do not apply to reclaimed water permits. Please contact the Non -Discharge Permitting Unit if you are interested in obtaining similar monitoring frequency reductions related to reclaimed water use. The changes made in this permit modification include: • M nitoring frequency reductions for BOD5, TSS, Ammonia and Fecal Coliform from daily to twice per week. • M dified footnote # 12 and added footnote # 13 to the above parameters specifying spacing of sampling during the week. Accordingly, we hereby forward the minor permit modification on Pages 3 and 4 of 19 with modified text highlighted. Please insert the changed pages into your permit. D E Q �J North Carolina Department of Environmental Quality I Division of Water Resources v 512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611 NoarHcaaouNa 919.707.9000 oepanmem or En.iroemeemi auMi� DocuSign Envelope ID: 1CDB5CC5-DB2A-4CO8-82F9-3548AE36ABOD Please note that this permit is not transferable except after notice to the Division. The Division may require modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain other permits which may be required by the Division of Water Resources or any other Federal, State, or Local governmental regulations. If you have any questions concerning this permit, please contact Gary Perlmutter at (919) 707- 3611 or via email at gary.perlmutter@deq.nc.gov. Sincerely, Do'c'ulSiigne'd by* `' • .�'e.' I ` E U AukhJ C�Ith C464531431644FE... for Richard E. Rogers Jr., Director Division of Water Resources, NCDEQ Hardcopy: NPDES Files eCopy: US EPA Region 4 DWR/Winston Salem Regional Office/Water QualityNanessa Manuel D E Q�� 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 NORTH CAROLINA — 919.707.9000 Dep dmem of F-Irons W Dual DocuSign Envelope ID: 1CDB5CC5-DB2A-4CO8-82F9-3548AE36ABOD Permit NC0066516 Part I A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (3.0 MGD) [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade IV Biological Water Pollution Control System [15A NCAC 08G .0302] a. During the period beginning upon the effective date and lasting until expansion above 3.0 MGD or expiration, the Permittee is authorized to discharge treated wastewater through Outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below: EFFLUENT CHARACTERISTICS Parameter Code DISCHARGE LIMITATIONS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow 50050 3.0 MGD Continuous Recording Influent or Effluent Total Monthly Flow (MG) 82220 Monitor and Report Monthly Recorded or Calculated Effluent BOD, 5-day, 20°C Summer 3,4,12 C0310 5.0 mg/L 7.5 mg/L 2/week 13 Composite Influent & Effluent BOD, 5-day, 20°C Winter 3,4,12 C0310 10.0 mg/L 15.0 mg/L 2/week 13 Composite Influent & Effluent Total Suspended Solids3,12 C0530 30.0 mg/L 45.0 mg/L 2/week 13 Composite Influent & Effluent NH3 as N (Summer)4 C0610 1.0 mg/L 3.0 mg/L 2/week 13 Composite Effluent NH3 as N (Winter)4 C0610 2.0 mg/L 6.0 mg/L 2/week 13 Composite Effluent Dissolved Oxygen 00300 Daily average >_ 5.0 mg/L Daily Grab Effluent Fecal Coliform12 31616 200/100ml- I 400/100ml- I 2/week 13 Grab Effluent pH 00400 Between 6.0 and 9.0 s.u. Daily Grab Effluent Temperature 00010 Monitor and Report Daily Grab Effluent Conductivity 00094 Monitor and Report Daily Grab Effluent Total Phosphorus5 C0665 2.0 mg/L (Quarterly Average)5 Weekly Composite Effluent TKN (mg/L)6 00625 Monitor and Report Weekly Composite Effluent NO2 + NO3 (mg/L)6 00630 Monitor and Report Weekly Composite Effluent TN (mg/L)6 C0660 Monitor and Report Weekly Composite Effluent Total Nitrogen Loads 4Y600 Monitor and Report (pounds/month) Monthly Calculated Effluent 68,489 pounds per year Annually Calculated Effluent Total Copper 01042 15.7 tag/L 22.4 tag/L Monthly Composite Effluent Total Zinc 01092 Monitor and Report Quarterly Composite Effluent Chronic Toxicity$ TGP3B Monitor and Report Quarterly Composite Effluent Temperature 00010 Monitor and Report Footnote 9 Grab U, D Conductivity 00094 Monitor and Report Footnote 9 Grab U, D Dissolved Oxygen 00300 Monitor and Report Footnote 9 Grab U, D Fecal Coliform 31616 Monitor and Report Footnote 9 Grab U, D Total Hardness [as CaCO3] m /L 10 00900 Monitor and Report p Quarterly Composite Effluent Effluent Pollutant Scan NC01 Monitor and Report I Footnote 11 1 Footnote 111 Effluent All footnotes are listed on the following page. DocuSigned by: l�l t(�t at M.OVkkuh C464631431644FE.- Page 3 of 14 for Richard E. Rogers, Director Date: August 11, 2023 DocuSign Envelope ID: 1CDB5CC5-DB2A-4CO8-82F9-3548AE36ABOD Permit NCO066516 Footnotes: 1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR application system [see A. (9.)]. 2. U: Upstream at least 100 feet from the outfall. D: Downstream at NCSR 2751. 3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85% removal). 4. Summer is defined as the period from April 1 through October 31, while winter is defined as November 1 through March 31. 5. The quarterly average for total phosphorus shall be the average of composite samples collected weekly during the calendar quarter (January -March, April -June, July -September, October -December). 6. 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. 7. This is the mass quantity of Total Nitrogen discharged in a given period of time. See condition A. (3.). Compliance with this limit shall be determined in accordance with Special Condition A. (4.) of this permit. 8. Chronic Toxicity (Ceriodaphnia) P/F at 90% with testing in March, June, September and December (see condition A. (6.)). 9. Sample collected three times per week during June 1 through September 30 and once per week October 1 through May 31. Monitoring for upstream and downstream are provisionally waived based upon membership in the Lower Neuse River Basin Association (LNBA). If at anytime during the term of this permit, membership in the LNBA is terminated, the Division shall be notified immediately, and in -stream monitoring shall immediately be conducted as stipulated in this permit. 10. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals (cadmium, copper, lead, nickel, silver, and zinc). 11. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit [see A. (7.)]. 12. The Permittee can request reduction in monitoring frequencies to twice per week with three years of satisfactory data per the Monitoring Frequency Reduction Review Guidance for exceptionally performing facilities. The Permittee has requested a reduction in monitoring. 13. Twice per week sampling must occur on any two non-consecutive days during the calendar week. b. There shall be no discharge of floating solids or visible foam in other than trace amounts. EADocuSigned bny:�`' •.�'e.' I`Ul 1� khRh' C�I.'b C464531431644FE... Page 4 of 14 for Richard E. Rogers, Director Date: August 11, 2023