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Home My WebLink AboutNC0065684_Draft Permit_20210927 ROY COOPER Governor ELIZABETH S. BISER Secretary A4 -;.. 1 S.DANIEL SMITH Director 4 M„d gat 017;14111.. NORTH CAROLINA Environmental Quality September 27,2021 Aqua North Carolina,Inc. Attn:Amanda Berger 202 Mackenan Court Cary,NC 275 1 1-6447 Subject: Draft NPDES Permit NC0065684 Country Wood Subdivision WWTP Union County Grade II Biological WPCS 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.(4.)has been updated to require electronic submission of effluent data reports(DMRs).Federal regulations require electronic submittal of all discharge monitoring. • 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 Union 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 emily.phillips@,ncdenr.gov. Sincerely, CDocuSigned by: fttl PLUS 8111E53CB16460471... Emily Phillips Compliance and Expedited Permitting Unit cc: NPDES files ec: M RO 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 NC0065684 Grade II Biological Water Pollution Control System[15A NCAC 08G.0302] 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 p 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 Country Woods WWTP Union County to receiving waters designated as Goose Creek in subbasin 03-07-12 of the Yadkin-Pee Dee 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 April 30, 2026. Signed this day. S. Daniel Smith,Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 8 Permit NC0065684 Grade II Biological Water Pollution Control System[15A NCAC 08G .0302] SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked, and as of this 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 hereby authorized to: 1. Continue to operate 0.48 MGD of the existing 0.67 MGD design capacity wastewater treatment facility consisting of: 0.09 MGD package plant (dual trains at 0.045 MGD each) using dual: • aeration basins • clarifiers • contact tanks with tablet chlorination and dechlorination(backup only) • aerated sludge tanks 0.10 MGD package plant(dual trains at 0.05 MGD each) using dual: • aeration basins • clarifiers • chlorine contact tanks with tablet chlorination and dechlorination (backup only) • aerated sludge tanks • one common equalization basin prior to both plants • one common tertiary filter for both dual plants (2 cells) after clarification 0.48 MGD (three trains, each 0.16 MGD) each consisting of triple: • equalization basins • aeration basins • clarifiers • chlorine contact tanks with tablet chlorination(backup only) • post aeration • dechlorination • aerated sludge tanks, and • one filter unit per train (four cells) with effluent from all treatment trains discharging through UV disinfection and a recording-type effluent flow meter, located at the Country Woods WWTP (off Hemlock Drive, northwest of Bakers) in Union County. 2. An Authorization to Operate application for a reduced design capacity to 0.48 MGD has been submitted to the Division. Upon receipt of the Engineer's Certificate for the 0.48 MGD design Page 2 of 8 Permit NC0065684 Grade II Biological Water Pollution Control System[15A NCAC 08G .0302] capacity, effluent limitations and monitoring requirements will be as specified in section A. (1). Also, upon receipt of the Engineer's Certificate the dual 0.09 MGD treatment train capacity and the dual 0.10 treatment capacity will no longer be active treatment components; and may be repurposed or decommissioned; and 3. Should you want to expand above the 0.48 MGD design capacity, you must apply for and obtain an Authorization to Construct from the Division. After receiving an Authorization to Construct approval from the Division, construct, operate, and discharge at the expanded total design treatment capacity of 0.67 MGD; and 4. Discharge from said treatment works via Outfall 001, at the location specified on the attached map into Goose Creek [13-17-18], currently classified C, located within subbasin 03-07-12 [HUC: 0304010507] of the Yadkin-Pee Dee River Basin. Page 3 of 8 Permit NC0065684 Grade II Biological Water Pollution Control System[15A NCAC 08G .0302] Part I. A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.48 MGD) [15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.] Grade II Biological Water Pollution Control System [15A NCAC 08G .0302] Beginning with the permit effective date and lasting until discharges above 0.48 MGD or expiration, whichever is sooner, the Permittee is authorized to discharge treated domestic wastewater from Outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Daily Measurement Sample Sample Parameter Code Average Maximum Frequency Type Location Flow 50050 0.48 MGD Continuous Recording Influent or Effluent SOD, 5-day, (20°C) C0310 10.0 mg/L 15.0 mg/L Weekly Composite Effluent Summer* BOD, 5-day, (20°C)-Winter* C0310 18.0 mg/L 27.0 mg/L Weekly Composite Effluent Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L Weekly Composite Effluent NH3 as N—Summer* C0610 0.5 mg/L 2.90 mg/L Weekly Composite Effluent NH3 as N— Winter* C0610 0.5 mg/L 7.15 mg/L Weekly Composite Effluent Dissolved Oxygen 00300 Daily average>5.0 mg/L Weekly Grab Effluent Temperature 00010 Weekly Grab Effluent Fecal Coliform 31616 200/100 mL 400/100 mL Weekly Grab Effluent (geometric mean) Total Residual Chlorine 3 50060 19 pg/L Weekly Grab Effluent >6.0 and <9.0 standard pH 00400 — units Weekly Grab Effluent Total Nitrogen C0600 Quarterly Composite Effluent (NO2+NO3+TKN) Total Phosphorus CO665 Quarterly Composite Effluent NH3 as N C0610 Weekly Grab Upstream&2 Downstream Temperature 00010 Weekly Grab Upstream& Downstream 2 Dissolved Oxygen 00300 Weekly Grab Upstream& Downstream 2 Total Residual Chlorine 3 50060 Weekly Grab Upstream&2 Downstream Fecal Coliform 31616 Weekly Grab Upstream&2 Downstream *Summer. April 1 —October 31 *Winter. November 1 —March 31 Footnotes: 1. The Permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR application system [see A. (4)]. Page 4 of 8 Permit NC0065684 Grade II Biological Water Pollution Control System[15A NCAC 08G .0302] 2. Upstream = approximately 100 feet above the outfall. Downstream = approximately 0.4 miles below the discharge point. 3. Total Residual Chlorine monitoring and limit effective only if chlorine compounds are used for disinfection. 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. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.67 MGD) [15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.] Grade II Biological Water Pollution Control System [15A NCAC 08G .0302] Beginning with discharges above 0.48 MGD up to 0.67 MGD and lasting until expiration, the Permittee is authorized to discharge treated domestic wastewater from Outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Daily Measurement Sample Sample Parameter Code Average Maximum Frequency Type Location Flow 50050 0.67 MGD Continuous Recording Influent or Effluent BOD, 5-day, (20°C)- C0310 10.0 mg/L 15.0 mg/L 3/Week Composite Effluent Summer* BOD, 5-day, (20°C)-Winter* C0310 18.0 mg/L 27.0 mg/L 3/Week Composite Effluent Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L 3/Week Composite Effluent NH3 as N—Summer* C0610 0.5 mg/L 2.90 mg/L 3/Week Composite Effluent NH3 as N— Winter* C0610 0.5 mg/L 7.15 mg/L 3/Week Composite Effluent Dissolved Oxygen 00300 Daily average > 5.0 mg/L 3/Week Grab Effluent Temperature 00010 3/Week Grab Effluent Fecal Coliform 31616 200/100 mL 400/100 mL 3/Week Grab Effluent (geometric mean) Total Residual Chlorine 3 50060 19 pg/L 3/Week Grab Effluent >6.0 and <9.0 standard pH 00400 — units 3/Week Grab Effluent Total Nitrogen C0600 Quarterly Composite Effluent (NO2+NO3+TKN) Total Phosphorus C0665 Quarterly Composite Effluent NH3 as N C0610 Variable4 Grab Upstream& Downstream 2 Temperature 00010 Variable' Grab Upstream&2 Downstream Dissolved Oxygen 00300 Variable 4 Grab Upstream &2 Downstream Total Residual Chlorine 3 50060 Variable 4 Grab Upstream& Downstream 2 Page 5 of 8 Permit NC0065684 Grade II Biological Water Pollution Control System[15A NCAC 08G.0302] Fecal Coliform 31616 Variable a Grab Upstream & Downstream 2 "Summer: April 1 -October 31, *Winter: November 1 -March 31 Footnotes: 1. The Permittee shall begin submitting discharge monitoring reports electronically using the NC DWR's eDMR application system[see A.(4)]. 2. Upstream = approximately 100 feet above the outfall. Downstream = approximately 0.4 miles below the discharge point. 3. Total Residual Chlorine monitoring and limit effective only if chlorine compounds are used for disinfection. 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. The Permittee shall collect stream samples 3/week during the months of June,July,August, and September; sample weekly during the remainder of the year. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS A. (3.) PERMIT REOPENER CONDITION: AMMONIA TOXICITY & NUTRIENTS [NCGS 143-215.1 (b)] This permit may be reopened to impose further controls or restrictions upon the discharge of ammonia and other nutrients to the receiving stream. Endangered species in the Goose Creek watershed exhibit a high degree of sensitivity to ammonia. Permit modification may be required in order to ensure viable aquatic habitat with regard to instream ammoni. concentrations. Studies conducted within q"e Goose Creek watershed demonstrate episodic events of elevated concentrations of nutrients (nitrogen and phosphorous). High concentrations of nutrients have the potential create conditions detrimental to overall water quality and the health of aquatic life. Permit modification may be required to include monitoring that will help ascertain the impact of the discharge with respect to instream concentrations of nutrients and to require controls on effluent nutrient concentrations should the discharge be found to be a significant contributor to elevated nutrient levels within the receiving stream. A. (4.) ELECTRONIC REPORTING - 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 Reporting Requirements [Supersedes Section D.(2.)and Section E. (5.)(a)J Page 6 of 8 Permit NC0065684 Grade II Biological Water Pollution Control System[15A NCAC 08G.0302] 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. 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). 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: https://www.federalregister.gov/documents/2015/10/22/2015-24954/national-pollutant-discharge-elimination- system-npdes-electronic-reporting-rule Electronic submissions must start by the dates listed in the"Reporting Requirements"section above. How to Request a Waiver from Electronic Reporting Page 7 of 8 Permit NC0065684 Grade II Biological Water Pollution Control System[15A NCAC 08G.0302] 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 pager http://deq.nc.gov/about/divisions/water-resources/edmr 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. (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. I am aware that there are significant penalties for submitting false information, including the possibility offines and imprisonment for knowing violations." 1. Records Retention[Supplements Section D. (6.)i 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]. li Page 8 of 8 1110:..--fivt/ rt-lie -7\ 7;-) . : `g7t7___ fc.,. atig ,„pipe ,77., ,,,,- t„...\\__ _______,_,...._ 44 .c.. r,, ___ _.. . ,." j-91-/: ii, �� ‘y % � v�, 110.9:-.-7:111:'gd %:,7 : l/- rjr..,;:/0 ' y r`,'! o 17 ,k _ . \,..__ , , 4 __ / -s . m/ • air - ' # _ : "_ ` _ � 1 ,/ Z - _\ � ..... - - ' /2- 4'1 4 1 ' '' ' k‘ if .- " t 4 its 4044.c„.... #4.,A• ----.. .„, z . , Air 44g. 1...ii _ *' � k ` �' '...//:. • 1r , i- ,y _5_ , , .7--------.4e# #.� • � ;i Nj\ t,0� �).ifry� f . �J 4 -„, . ,, ,...a r ,..\.:.- ,,,,, . (i_ ,, ` j Illy, .0. .G i. - lik, 10) ._ _ , 7 ilk% 01 2- ' -44‘Villi \ -- I • ' 41 AP' -N o,a; -( 0 - .licnby // ,;-141j .... , . ft,- .4.. • 0.. �— 1 .. (-)z, / . / a a .... • ,., 4, , .. ,... 1 .,v. ,4% 1 \ Out fall 001Jo-- (.4 o ar o '.."..-.) o ` V' 1C-. I to �% DR 11 �Y Shf ' •-_..-A Al_.. -- ' .: A„.., Pr, i► CIE r 491 ,, r s -� o0 V p RLpR Ot ' ittliti‘ ,. .),10,/\r3 41._) _, ifi-- 74 1 41 fel .4.41 --- ---\--Vicy Ait1040V Li 0 ( , * • -14 \ / _ -- ' ''"---•• V*741( fti:0 k 4 L__ I .-,_ _ . 'N\-. 41‘ 411‘ 4°- , 1 --elk '4-tg,.k ik • AZir l -`' ----, eit ILVtark I E-_,) (j\ - \ . '--- t- ./*' -\'\ /+ •.. -110 "-' - 1 o o r Ae# Z j 3',.- ' 4 , 0% • a o '\ - \i/-y )C-ulliNs7JA,41110wIP e**** Latitude: 35°07'22" NC0065684 Facilit Longitude: 80°37'12" Y Subbasin: 03-06-01 Country Wood WWTP Location Stream Class: WS-V NSW Receiving Stream: Goose Creek River Basin: Cape Fear Nat& Union County