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HomeMy WebLinkAboutNC0063614_Draft Permit_20171115Water Resources ENVIRONMENTAL QUALITY Mr Shannon Becker, President Aqua North Carolina, Inc 202 Mackenan Court Cary, NC 27511 November 15, 2017 -1 ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Interim Director - Subject: Draft NPDES Permit NCO063614 Wildwood Green WWTP Wake County Class WW -2 Dear Permittee: The Division has reviewed your request to renew the subject permit. Please review this draft carefully to ensure your thorough understanding of the information, conditions, and requirements it contains. The draft permit includes the following significant changes from the existing permit: ➢ Section A. (7.) has been added to require electronic submission of effluent data. Federal regulations require electronic submittal of all discharge monitoring reports (DMRs). ➢ Regulatory citations have been added to the permit. ➢ An updated outfall map has been included. With this notification, the Division will solicit public comment on this draft permit by publishing a notice in newspapers having circulation in the general Wake 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 any questions concerning this permit, please contact Emily Phillips at (919) 807-6479. cc: NPDES files Sinc ly, dy3 Emily Phillips Compliance and Expedited Permitting Unit State of North Carolina I Environmental Quality I Water Resources 1617 Mail Service Center I Raleigh, NC 27699-1617 919 807 6300 919-807-6389 FAX https•//deq nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits Permit NCO063614 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 Wildwood Green Subdivision WWTP Gleneagles Drive northwest of Raleigh Wake County to receiving waters designated as an unnamed tributary to Lower Barton Creek in the Neuse 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 January 31, 2023. Signed this day. DRAFT Linda Culpepper Interim Director, Division of Water Resources By Authority of the Environmental Management Commission Page i of 10 Permit NCO063614 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge, are hereby revoked. The exclusive authority to operate this facility arises under this permit. The authority to operate the facility under previously issued permits bearing this number is no longer effective. The conditions, requirements, terms and provisions of this permit authorizing discharge under the NPDES govern discharges from this facility. AQUA North Carolina, Inc. is hereby authorized to: 1. Continue to operate an 0.100 MGD extended aeration package WWTP which includes: • Bar screen • Aeration basin • Clarifier • Chemical phosphorus removal • Tertiary filters • Flow meter • Ultraviolet disinfectant • Effluent pumps • Back-up power generator The facility is located at Wildwood Green Subdivision Wastewater Treatment Plant, on Gleneagles Drive, northwest of Raleigh, Wake County, and 2. Discharge from said treatment works at the location specified on the attached map into an unnamed tributary to Lower Barton Creek, currently classified WS -IV; NSW waters in sub -basin 03-04-01 of the Neuse River Basin. Permit NCO063614 Part I. A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B .0400 et seq., 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 number 001. Such discharges shall be limited and monitored5 by the Permittee as specified below: Page 1 of 10 EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Monthly Daily Measurement Sample Sample EFFLUENT CHARACTERISTICS Parameter Code Average Maximum Frequency Type Location' Flow (MGD) 50050 0 250 Continuous Recorder Influent or Effluent Total Monthly Flow (MG) 82220 Monitor & Report Monthly Recorded or Calculated Effluent BOD, 5 -Day (20 Deg C) (mg/L) 16.0 24.0 Weekly Composite Effluent (April 1 -October 31) C0310 BOD, 5 -Day (20 Deg C) (mg/L) 300 45.0 Weekly Composite Effluent (November 1- March 31) C0310 Total Suspended Solids (mg/L) C0530 300 450 Weekly Composite Effluent NH3 as N (mg/L) 2 0 100 Weekly Composite Effluent (April 1 -October 31) C0610 NH3 as N (mg/L) 4 0 20.0 Weekly Composite Effluent (November 1- March 31) C0610 Fecal Coliform (#/100 mL) 200 400 Weekly Grab Effluent (geometric mean) 31616 Total Residual Chlorine (TRC) (Ng/L) 2 22 2/Week Grab Effluent 50060 Temperature (°C) 00010 Daily (5/Week) Grab Effluent Dissolved Oxygen (mg/L) 00300 Daily Average > 5 0 mg/L 3/Week Grab Effluent pH 00400 Not < 6 0 nor > 9 0 3/Week Grab Effluent Standard Units Total Kjeldahl Nitrogen (mg/L) C0625 Monitor & Report, mg/L 2/Month Composite Effluent NO2-N + NO3-N (mg/L) C0630 Monitor & Report, mg/L 2/Month Composite Effluent N Load4 QM600 Monitor & Report, Ib/mo Monthly Calculated Effluent Monitor & Report, Ib/yr Annually Calculated Effluent QY600 Total Nitrogen (TN) (mg/L) 3 C0600 8 0 (annua5average) 2/Month Composite Effluent Total Phosphorus (mg/L) C0665 1.0 (annua0average) 2/Month Composite Effluent emperature (°C) 00010 Weekly Grab Upstream & Downstream Dissolved Oxygen (mg/L) 00300 Weekly Grab Upstream & Downstream Page 1 of 10 Permit NCO063614 Footnotes 1. Upstream: At least 100 feet upstream from the outfall. Downstream: At NCSR 1831. 2 Total Residual Chlorine limits and monitoring requirements apply only if chlorine is used in the treatment process. See Special Condition A. (4 ) for instructions should the facility's permitted UV disinfection system fail and an alternate means of disinfection is required. 3. For a given wastewater sample, TN = TKN + NO2-N + NO3-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively. 4. TN Load is the mass quantity of Total Nitrogen discharged in a given period of time. See also Special Condition A. (2.), Calculation of TN Loads. 5. The Permittee shall submit discharge monitoring reports electronically using the Division's eDMR system [see A. (7.)]. There shall be no discharge of floating solids or visible foam in other than trace amounts. A.(2.) CALCULATION OF TOTAL NITROGEN LOADS [G.S. 143-215.1(b)] a. The Permittee shall calculate monthly and annual TN Loads as follows: Monthly TN Load (pounds/month) = TN x TMF x 8.34 where TN = average Total Nitrogen concentration (mg/L) of the composite samples collected during the month TMF = Total Monthly Flow of wastewater discharged during the month (MG/month) = conversion factor, from (mg/L x MG) to pounds u. Annual TN Load (pounds/year) = Sum of the 12 Monthly TN Loads for the calendar year b. The Permittee shall report monthly Total Nitrogen results (mg/L and pounds/month) in the discharge monitoring report for that month and shall report each year's annual results (pounds/year) in the December report for that year. A.(3.) ANNUAL LIMITS FOR TOTAL NITROGEN [G.S. 143-215.1(b)] a. Total Nitrogen (TN) allocations and TN Load limits for NPDES dischargers in the Neuse __River basin apply on a calendar year basis. b. For any given calendar year, the Permittee shall be in compliance with the annual TN Load limit in this Permit if: i. the Permittee's annual TN discharge is less than or equal to its TN Load limit, or n. the Permittee is a co -permittee member of a TN compliance association. C. If the Permittee is not a co -permittee member of a TN compliance association and the Permittee's cumulative annual TN discharge exceeds the effective TN Load limit in this permit at any point during the calendar year, the Permittee is in violation of its TN Load limit, and each day of a continuing violation shall constitute a separate violation. d. The TN Load limit in this Permit (if any) may be modified as the result of allowable changes in the Permittee's TN allocation. 1. Allowable changes include those resulting from purchase of TN allocation from the Wetlands Restoration Fund; purchase, sale, trade, or lease of allocation between the Permittee and other dischargers; regionalization; and other transactions approved by the Division. Page 2 of 10 Permit NC0063614 ii. The Permittee may request a modification of the TN Load limit in this Permit to reflect allowable changes in its TN allocation. Upon receipt of timely and proper application, the Division will modify the permit as appropriate and in accordance with state and federal program requirements. iii. Changes in TN limits become effective on January 1 of the year following permit modification. The Division must receive application no later than August 31 for changes proposed for the following calendar year. iv. Application shall be sent to: NCDEQ/DWR/NPDES Attn: Neuse River Basin Coordinator 1617 Mail Service Center Raleigh, NC 27699-1617 e. If the Permittee is a member and co -permittee of an approved TN compliance association, its TN discharge during that year is governed by that association's group NPDES permit and the TN limits therein. i. The Permittee shall be considered a Co -Permittee Member for any given calendar year in which it is identified as such in Appendix A of the association's group NPDES permit. ii. Association roster(s) and members' TN allocations will be updated annually and in accordance with state and federal program requirements. iii. If the Permittee intends to join or leave a compliance association, the Division must be notified of the proposed action in accordance with the procedures defined in the association's NPDES permit. (A) Upon receipt of timely and proper notification, the Division will modify the permit as appropriate and in accordance with state and federal program requirements. (B) Membership changes in a compliance association become effective on January 1 of the year following modification of the association's permit. The TN monitoring and reporting requirements in this Permit remain in effect until expiration of this Permit and are not affected by the Permittee's membership in a compliance association. A.(4.) TOTAL NITROGEN ALLOCATIONS [G.S. 143-215.1(b)] a. The following table lists the Total -Nitrogen (TN) allocation(s) assigned to, acquired by, -or transferred to the Permittee in accordance with the Neuse River nutrient management rule (T15A 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. Page 3 of 10 TN ALLOCATION' ALLOCATION SOURCE DATE STATUS TYPE Estuary Discharge (Iblyr) (Iblyr) Base Assigned by Rule 12/7/1997, 202 2,022 Active (T15A NCAC 02B 0234) 1 4/1/2003 TOTAL 1 202 2,022 Page 3 of 10 Permit NCO063614 Footnote: 1. Transport Factor = 10% b. Any addition, deletion, or modification of the listed allocation(s) (other than to correct typographical errors) or any change to Active 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.(5.) 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 72 %. The permit holder shall perform at a minimum, quarterly 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 20 10) 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 following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -December 2010) or subsequent versions. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR -1) for the months in which tests were performed, using the parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT -3 (original) is to be sent to the following address: Attention: North Carolina Division of Water Resources _— Water Sciences Section/Aquatic Toxicology Branch 1621 Mail Service Center Raleigh, NC 27699-1621 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, Page 4 of 10 Permit NCO063614 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, monitoring will be required during the following month. 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. Should any test data from this monitoring requirement 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, minimum control organism reproduction, 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. (6.) TEMPORARY MEANS OF DISINFECTION [NCGS 143-215.1(a)] a. In the event that the wastewater treatment plant's ultraviolet (UV) disinfection system should fail, underperform, or otherwise be removed from effective service, the permittee or his agent should immediately inform the Surface Water Protection Section staff of the Raleigh Regional Office of this development and discuss temporary, alternate means for disinfection of the effluent. b. If chlorine compounds are used as temporary means of disinfection, the total residual chlorine (TRC) concentration of the effluent must be monitored daily while this method of disinfection is in use and TRC values must be reported on the discharge monitoring report. TRC in the effluent may not exceed the permit limit; therefore, dechlorination methods may also be necessary to ensure protection of water quality in the receiving - stream. -- - _-- C. 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. d. Use of a disinfection system other than the permitted UV system during circumstances not deemed as emergency and/or temporary (replacement of lamps, lamp cleaning or maintenance, etc.) will be considered a violation of the terms of this permit. A. (7.) 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): Page 5 of 10 Permit NCO063614 • 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. (5.1 (all 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 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 mailing address above. See "How to Request a Waiver from Electronic Reporting" section 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. Page 6 of 10 Permit NCO063614 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 appropnate 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-npde s-electronic-reportmg-rule Electronic submissions must start by the dates listed in the "Reporting Requirements" section above. 3. How to Request a Waiver from Electronic Reportingg 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://deg.nc.gov/abou /divisions/water-resources/edmr 4. Signatory -Requirements [Supplements Section B. (11.) (b) -and Supersedes Section B. 11. d 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://deg.nc.gov/about/divisions/­water-resources/edmr Page 7 of 10 Permit NCO063614 Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following certification [40 CFR 122.221. 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 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 10 ,?�i ____/ / Q roA j; ' Or / 3 / M � avrrNNi1T TRI in ti ' NCO063614 — Wildwood Green WWTP AQUA North Carolina Latitude: 359 54'47" Longitude: 782 40'50" H LIC: 03020201 Sub -Basin: 03-04-01 Stream Class: WS -IV; NSW Receiving Stream: UT to Lower Barton Creek 00 D riehi•id ye -Pak 11�11 rED�. Facility.... Location North Wake County Map not to scale Water Resources ENVIRONMENTAL QUALITY November 15, 2017 MEMORANDUM To: Allen Hardy NC DEQ / DWR / Public Water Supply Raleigh Regional Office From: Emily Phillips NPDES Unit Subject: Review of Draft NPDES Permit NCO063614 Wildwood Green WWTP Wake County ROY COOPER Govennoi MICHAEL S REGAN Secretary LINDA CULPEPPER Interim Du ec(ai Please indicate below your agency's position or viewpoint on the draft permit and return this form by December 15, 2017 (email acceptable). If you have any questions on the draft permit, please contact me at 919-807-6391 or via e-mail [sarah.phillips@ncdenr.gov]. RESPONSE: (Check one) ❑Concur with the issuance of this permit provided the facility is operated and maintained properly, the stated effluent limits are met, prior to discharge, and the discharge does not contravene the designated water quality standards. ❑ Concurs with issuance of the above permit, provided the following conditions are met: — ❑ Opposes the issuance of the above permit, based on reasons stated below, or attached Signed Date: State of North Carolina I Environmental Quality I Water Resources 1617 Mail Service Center I Raleigh, NC 27699-1617 919 807 6300 919-807-6389 FAX https.Hdeq nc gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-pennits FACT SHEET EXPEDITED - PERMIT RENEWAL NCO063614 — Class 2 Basic Information for Expedited Permit Renewals Permit Writer/Date Emily Phillips / NPDES / November 8, 2017 Permit Number - Class NC0063614 — Class 2 Flow 0.100 MGD [1892 people] Owner AQUA North Carolina, Inc. Facility Name Wildwood Green WWTP Type of Waste 100 % domestic Basin Name/Sub-basin number Neuse River Basin / 03-04-01 Receiving Stream UT to Lower Barton Creek [segment 27-16-(1)] Stream Classification in Permit WS -IV; NSW Does permit need Daily Max NH3 limits? No Does permit need TRC limits/language? No Does permit have toxicity testing? Yes Does permit have Special Conditions? Yes Does permit have instream monitoring? Yes, DO & Temperature Is the stream impaired (on 303(d) list)? No Any obvious compliance concerns? No Any permit MODS since last permit? No Requests for Renewal Received July 25, 2017 New expiration date January 31, 2023 Changes to current permit? Updated map, added eDMR language, & added regulatory citations Data Review -- Reviewed BIMS data from 2012 through present Numerous aquatic toxicity limit enforcements. Aquatic toxicity violation which proceeded to NOV Also, a couple of violations for daily maximums for Fecal Coliform and quarterly average for Phosporus, which all proceeded to NOVs.