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HomeMy WebLinkAboutNC0064378_Draft Permit_20230516 43- ROY COOPER 4 +i Governor ee- 11 ELIZABETH S.BISER t..`.o.:* Secretory ®, �" RICHARD E.ROGERS,JR. NORTH CAROLINA Director Environmental Quality May 16, 2023 Mr. Tony Konsul Carolina Water Service, Inc. of NC 4944 Parkway Plaza Blvd, Suite 375 Charlotte,NC 28217 Subject: Draft NPDES Permit NC0064378 Willowbrook WWTP Grade WW-2 Biological WPCS Wake County Dear Permittee: The Division has reviewed your request to renew the subject permit. Enclosed with this letter is a copy of the draft permit for your facility. 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: > Ammonia limits have been recalculated for the 0.03 MGD flow phase. In July 2016 the NPDES program began implementation of revised ammonia criteria based upon the potential for toxic impacts from ammonia [see attached memorandum]. Previously, some 100% domestic discharges were allowed to choose an effluent toxicity test instead of an ammonia limit. That option is no longer available. As those permits are received for renewal (or major modification), ammonia limits will be calculated as per the 2016 memo and implemented. The effluent toxicity test will be removed, as it was only in those permits in lieu of an ammonia limit. The ammonia limits will take effect in 2028 to allow your facility time to make any necessary modifications to meet the limits • A reopener condition for the Neuse River has been added at Part I. A. (4). - ➢ Electronic data submission requirements have been updated. Beddingfield Creek is listed as an impaired stream on North Carolina's 303 (d) list. Currently, the stream does not meet all water quality standards. If the limitations in the current permits for facilities discharging to Beddingfield Creek do not result in improved water quality,removal of discharges may be necessary for the health of the stream. We will continue to monitor compliance at your facility. If noncompliance with your permit's effluent limits is shown to be a direct cause of stream degradation, the Division will recommend removal of your facility's discharge. Part III of your permit requires you to"continually evaluate all wastewater disposal alternatives and pursue the most environmentally sound alternative of the reasonably cost-effective alternatives"to Q' t Nort512 Noh CarolinarthSalisburyDepartmentStreet of1617 EnvironMailmentSeal QiceuaCelity i DivisioRaleighn of WaterNorthCarolResourcina 27es ry nter , 699-1617 � 919.707.9000 Page 2 of 2 NPDES Permit NC0064378 surface water discharge. Such an evaluation may help you find an alternative to surface water discharge that is more appropriate for your facility. 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. 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 at the e-mail address below 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 at charles.weaver(ancdenr.gov. Sincerely, 7t"/14- / Environmental Specialist II NPDES Compliance and Expedited Permitting Permit NC0064378 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. Carolina Water Service, Inc. of NC is hereby authorized to discharge wastewater from a facility located at the Willowbrook Subdivision WWTP 3623 Willow Tree Lane Clayton Wake County to receiving waters designated as an unnamed tributary to Beddingfield 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 March 31,2028. If the permittee intends to continue to discharge at the facility beyond the term of this permit, a renewal application must be submitted no later than October 3, 2027(180 days before the expiration of this permit). Signed this day ort- if.A . 4tivAtt '' Richard E. Rogers, Jr., Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 11 Permit NC0064378 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. Carolina Water Service, Inc. of NC is hereby authorized to: 1. Continue to operate an existing 0.03 MGD wastewater treatment system that includes the following components: • Bar screen • Surge Tank—7,500 gallons • Diffused aeration basin—36,000 gallons • Clarifier— 11,000 gallons • Cloth media tertiary filters • UV disinfection system • Back up chlorination and dichlorination system • Sludge holding tank—5,000 gallons This facility is located northwest of Clayton(3623 Willow Tree Lane) at the Willowbrook Subdivision WWTP in Wake County. 2. After receiving an Authorization to Construct permit from the Division, construct and operate additional treatment units for treatment of up to 0.06 MGD of wastewater, and 3. Discharge from said treatment works at the location specified on the attached map into an unnamed tributary to Beddingfield Creek, currently classified C-NSW waters in sub-basin 03-04-02, Stream Index 27-37 [HUC: 030202011103], in the Neuse River Basin. Page 2 of 11 Permit NC0064378 Part I Grade WW-2 Water Pollution Control System [15A NCAC 08G.0302] A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS—0.03 MGD [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] During the period beginning on the effective date of this permit and lasting until expansion above 0.03 MGD or expiration,the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited, monitored,and reported' by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Daily Measurement Sample Sample Parameter Code Average Maximum Frequency Type Location2 Flow 50050 0.03 MGD L Continuous Recording Influent or Effluent Total Monthly Flow 82220 Monitor&Report Monthly Calculated Effluent BOD, 5-day(20°C) C0310 15.0 mg/L 22.5 mg/L Weekly Grab Effluent (April 1—October 31) BOD, 5-day(20°C) C0310 29.0 mg/L 43.5 mg/L Weekly Grab Effluent (November 1—March 31) Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L Weekly Grab Effluent NH3 as N C0610 10.0 mg/L 35.0 mg/L Weekly Grab Effluent (April 1—October 31) NH3 as N C0610 20.0 mg/L 35.0 mg/L Weekly Grab Effluent (November 1—March 31) NH3 as N3 C0610 2.0 mg/L 10.0 mg/L Weekly Grab Effluent (April 1—October 31) NH3 as N3 C0610 4.0 mg/L 20.0 mg/L Weekly Grab Effluent (November 1—March 31) Dissolved Oxygen 00300 Daily average > 5.0 mg/L Weekly Grab Effluent Fecal Coliform 200/100 ml 400/100 ml Weekly Grab Effluent (geometric mean) 31616 Total Residual Chlorine4 50060 17 pg/L 2/Week Grab Effluent Temperature(°C) 00010 Daily Grab Effluent > 6.0 and < 9.0 Standard pH 00400 Units Weekly Grab Effluent TKN (mg/L) 00625 Monitor&Report Weekly Composite Effluent NO2-N + NO3-N (mg/L) 00630 Monitor&Report Weekly Composite Effluent TN (mg/L)5 C0600 Monitor&Report Weekly Composite Effluent Monitor&Report TN Load6 QM600 (pounds/month) Monthly Calculated Effluent QY600 Monitor&Report Annually Calculated Effluent (pounds/year) Total Phosphorus C0665 Monitor&Report 2/Month Grab Effluent Combined radium-226&radium 2286 5 pCu/I (annual average) Quarterly5 Grab Effluent 11503 Alpha emitters(including radium-226, but 15 Cu I(annual average) 5 excluding radon&uranium)6 82077 p / 9 ) Quarterly Grab Effluent Page 3 of 11 Permit NC0064378 Beta emitters(gross beta activity; excluding potassium-40&other naturally occurring 50 pCu/L(annual average) Quarterly5 Grab Effluent radionuclides)' 03520 Uranium' 22708 30 pg/L(weekly average) Quarterly5 Grab Effluent Dissolved Oxygen 00300 Weekly Grab U&D Temperature(°C) 00010 Weekly Grab U&D Footnotes: 1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system [see A. (6.)]. 2. U=at least 50 feet upstream from the outfall. D=at least 300 feet below the outfall. 3. Limits take effect 1/1/2028. 4. Limit and monitoring requirements apply only if chlorine is used. 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. 5. For a given wastewater sample, TN=TKN +NO2-N+NO3-N, where TN is Total Nitrogen and TKN is Total Kjeldahl Nitrogen,and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively. 6. TN Load is the mass load of Total Nitrogen discharged in a given period of time [see A.(3.)]. 7. Sampling frequency will increase to monthly should any one sample exceed four times the average annual activity level. The permittee shall notify the Raleigh Regional Office in writing,should this occur. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. Page 4of11. Permit NC0064378 A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS-0.06 MGD [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] During the period beginning upon expansion to 0.06 MGD and lasting until expiration,the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited,monitored,and reported' by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Daily Measurement Sample Sample Parameter Code Average Maximum Frequency Type Lpcation2 Flow 50050 0.06 MGD Continuous Recording Influent or Effluent Total Monthly Flow Monitor&Report Monthly Calculated Effluent BOD, 5-day(20°C) C0310 5.0 mg/Lm (April 1—October 31) 7.5 mg/L Weekly Composite Effluent BOD,5-day(20°C) C0310 /L 15.0 /L 10.0 m (November 1—March 31) g Weekly Composite Effluent Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L Weekly Composite Effluent NH3 as N L0610 2.0 mg/L 10.0 mg/L Weekly Composite Effluent (April 1-October 31) _ NH3 as N C0610 4.0 mg/L 20.0 mg/L Weekly Composite Effluent (November 1—March 31) Dissolved Oxygen 00300 Daily average > 5.0 mg/L Weekly Grab Effluent Fecal Coliform 31616 200/100 ml 400/100 ml Weekly Grab Effluent (geometric mean) Total Residual Chlorin& 50060 17 pg/L 2/Week Grab Effluent Temperature(°C) 00010 Daily Grab Effluent pH 00400 >6.0 and < 9.0 Standard Units Weekly Grab Effluent TKN(mg/L) 00625 Monitor&Report Weekly Composite Effluent NOrN + NO3-N(mg/L) 00630 Monitor&Report Weekly Composite Effluent TN(mg/L)4 C0600 Monitor&Report Weekly Composite Effluent Monitor&Report TN Load5 QM600 (pounds/month) Monthly Calculated Effluent QY600 Monitor& Report Annually Calculated Effluent (pounds/year) Total Phosphorus C0665 Monitor&Report 2/Month Composite Effluent Combined radium-226&radium-2286 5 pCu/1 Quarterlys Grab Effluent 11503 Alpha emitters(including radium-226, but 15 pCu/I Quarterly5 Grab Effluent excluding radon&uranium)6 82077 Beta emitters(gross beta activity; excluding potassium-40&other naturally occurring 50 pCu/L Quarterly5 Grab Effluent radionuclides)6 03520 Uranium6 22708 30 pg/L Quarterly5 Grab Effluent Dissolved Oxygen 00300 Weekly Grab U&D Temperature(°C) 00010 Weekly Grab U& D Please see Footnotes to this table on the next page. Page 5 of 11 Permit NC0064378 Footnotes: 1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system [see A.(6.)]. 2. U=at least 50 feet upstream from the outfall. D=at least 300 feet below the outfall. 3. Limit and monitoring requirements apply only if chlorine is used. 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. For a given wastewater sample,TN=TKN+NOz N+NO3 N,where TN is Total Nitrogen and TKN is Total Kjeldahl Nitrogen and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively. 5. TN Load is the mass load of Total Nitrogen discharged in a given period of time [see A.(3.)]. 6. Sampling frequency will increase to monthly should any one sample exceed four times the average annual activity level.The penmittee should notify the Raleigh Regional Office in writing,should this occur. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. A.(3.) CALCULATION OF TOTAL NITROGEN LOADS [G.S. 143-215.1(b)] a. The Permittee shall calculate monthly and annual TN Loads as follows: i. Monthly TN Load(pounds/month)=TN x TMF x 8.34 Where: TN= average TN concentration(mg/L)of the composite samples collected during the month TMF= Total Monthly Flow of wastewater discharged during the month(MG/month) 8.34= conversion factor,from(mg/L x MG)to pounds ii. Annual TN Load(pounds/year)=Sum of the 12 Monthly TN Loads for the calendar year b. The Penmittee 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. (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 .0713)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 6 of 11 Permit NC0064378 ALLOCATION AMOUNT(1) ALLOCATION TYPE SOURCE DATE Estuary Discharge STATUS (pounds/year) (pounds/year) Base Assigned by Rule 12/7/1997; 607 1,213 Active (T15A NCAC 02B.0713) 4/1/2003 TOTAL 607 1,213 Active Footnote: 1. Transport Factor=50% 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) PERMIT RE-OPENER: NUTRIENT MANAGEMENT [NCGS 143-215.1 (b)] a) Pursuant to N.C. General Statues Section 143-215.1 and implementing rules found in Title 15A of North Carolina Administrative Code, Subchapter 02H, specifically, 15A NCAC 02H.0112(b)(1)and 02H.0114(a),and Part II,Sections B.12 and B.13.of this Permit,the Director of DWR may reopen this permit to require nutrient management measures for the discharge. The results of water quality monitoring,modelling or other evaluations may require that conditions for total nitrogen and total phosphorus control be imposed on this permit. b) 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. (6) 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)] Page 7 of 11 Permit NC0064378 The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report(eDMR)intemet 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 I 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. 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). 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)]. Page 8 of 11 Permit NC0064378 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. 3. How to Request a Waiver from Electronic Reporting The pennittee 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://deq.nc.gov/about/divisions/water-resources/edmr 4. 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 Page 9 of 11 Permit NC0064378 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." 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. Thisperiod maybe extended byrequest of the Director at anytime [40 CFR P q 122.41]. Page 10 of 11 ii \I (2...„,..„,.----;-_--„z___----....:\ ,,,,_ V,/ ,,-..,Nsi it---1,--.N., ip, yip-.1 * , 4,-- ----• -. .,..j/f-i--- \:•,. .„ \\..?/ ---___,-- .-.,,..3.)) r, /1 . \(( p_21-,-,isif : \ \ . 1,:ts ;)- ..,,--------.,,,),1\,, i4., -__ip •) 9 (,----,7,:f-._d, t% • ), . , ,Th -\„, ts ,,,,,,, . . , , I , , ,, ,,,:, , .., 1 _ ..„, 1 \ .. ) . )teAsis ‘Ayd,-.. ,(L----,\,-,„1—,.‘-\L ' l 1\ „`,1,\,\ (\,0 , ‘ ____ -- C Li) 041 t,--e, , . ,..i_. •, ., : , . : .,-, .,, c, . ---........-.) lE�.4.111M1 haVet, filb , i '. 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N // 1 3 \\71 4\,?for' ''''''›dt\. *14h:..4: (---:)‘211 (, (0 \ ).4-,,J ___)' 1{117 dit. .1" fir7411111:A\jaki:‘:\N s.'iii‘ ('-'1/ 11,10/4/.41441r )0 r ,-, --'- .'• '4,1„t.......!_..........eyV WW1") .(''',..,..1141114.„‘,71J,i Mr. , illodeprAlIe-t\ ' \ •: , N‘,‘..,./ / ‘ , * :-. 7_,..4 ,4111 ., ', lw.,,,,,.„. n , 7; ,,f 7 >IN, ,,, ,N,\, 11_----- )\ _ Lt A , _ . ,. . r-� • w---- •.,y.�-. i / i ce. • Carolina Water Service, Inc. of NC Facility Willowbrook WWTP J X Location County: Wake Stream Class: C-NSW (not to scale) Receiving Stream: UT to Beddingfield Creek Sub Basin:03 04 02 ., Latitude: 35°41'08" Stream Index:27-37 Longitude: 78°30'01" HUC#: 030202011103 NORTH NPDES Permit NC0064378 Page 11 of 11 1