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HomeMy WebLinkAboutNC0084573_Draft Permit_20210622 ROY COOPER t� �' Governor 1, DIONNE DELLI-GATTI 4t ,,l.* Secretary S.DANIEL SMITH NORTH CAROLINA Director Environmental Quality June 22, 2021 Donald Chamblee,Jr., Director of Public Works Lincoln County 115 W Main Street Lincolnton,NC 28092 Subject: Draft NPDES Permit NC0084573 Lincoln County WTP Grade I Physical Chemical WPCS Lincoln County 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: 1. Language has been updated in Section A. (1) and Section A. (3)to require electronic submission of effluent data. Federal regulations require electronic submittal of all discharge monitoring reports(DMRs). P 2. Outfall map has been updated. 3. Language on the Supplement to Permit Cover Sheet has been updated, and language about facility expansion has been added per information provided in the permit renewal application. 4. The components list has been added on the Supplement to Permit Cover Sheet. 5. The facility grade has been added in Section A. (1). 6. Added units of measure in Section A. (1). 7. Duration of discharge monitoring added in Section A. (1)per the current WTP guidance. 8. Turbidity monitoring has been reduced to monthly in Section A. (1)per current WTP guidance. 9. Updated the footnotes in Section A. (1). 10. Toxicity test in Section A. (1)and associated language in Section A. (2)have been updated per current toxicity testing guidance. 11. Former Section A. (3) about the toxicity reopener has been removed as the facility has improved compliance frequency over the last 3 years. Please note that the receiving stream is listed as impaired for PCB fish tissue advisory on the North Carolina 2018 303(d) Impaired Waters List. Addressing impaired waters is a high priority with the Division, and instream data will continue to be evaluated. If there is noncompliance with permitted effluent limits and stream impairment can be attributed to your facility, then mitigative measures may be required. Q North Carolina Department of Environmental Quality I Division of Water Resources D_E 512 North Salisbury Street 11617 Mall Service Center I Raleigh,North Carolina 27699-1617 ,�n,� mwr.nar.+.e.brorw\ /`*. 919.707.9000 The EPA approved NC 2015-2019 Water Quality Standard (WQS)Triennial Review includes new chronic and acute dissolved metal standards for most metals. Further,the freshwater standards for several metals are expressed as the dissolved form of the metals,and seven metals have hardness- dependent equations. As a result,the NPDES Permitting Unit will need site-specific effluent hardness data and instream hardness data,upstream of the discharge, for each facility monitoring these metals in order to calculate permit limitations. Effluent hardness and instream hardness sampling,upstream of the discharge,have been added to the permit at a monitoring frequency of quarterly. See Section A. (1) Effluent Limitations and Monitoring Requirements. 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 Lincoln 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 questions concerning the draft,please contact me at 919-707-3619, or via e-mail [Brianna.Young@ncdenr.gov]. Sincerely, (6114x- Brianna Young NPDES Compliance and Expedited Permitting Unit cc: NPDES Files(Laserfiche) Mooresville Regional Office Wastewater Operator Certification Group WSS/Aquatic Toxicology Branch DWR/Public Water Supply Permit NC0084573 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) 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, Lincoln County is hereby authorized to discharge wastewater from a facility located at the Lincoln County WTP 7674 Tree Farm Road Denver Lincoln County to receiving waters designated as Lake Norman(Little Creek Arm) in sub-basin 03-08-32 of the Catawba 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 31,2025. Signed this day S. Daniel Smith Director,Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 9 • Permit NC0084573 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. Lincoln County is hereby authorized to: 1. Continue to operate a conventional water treatment plant with a discharge of filter-backwash and sludge supemate wastewater. This facility has a design potable flowrate of 3.99 MGD,with a maximum,monthly average wastewater discharge of approximately 0.246 MGD. The facility is located at 7674 Tree Farm Road in Denver in Lincoln County. Water and wastewater treatment components consist of: • Rapid mix • Flocculation • Sedimentation basins • Multi-media filters • Clearwells • Thickeners • Solids dewatering Huber Screw Press • Chemical usage consists of: o Alum o Sodium hypochlorite o Sodium hydroxide o Fluoride o Orthophosphate o Sodium thiosulphate 2. Upon completion of facility expansion,operate a conventional water treatment plant with a discharge of filter-backwash and sludge supemate wastewater. This facility will have a design potable flowrate of 8.0 MGD,with a design wastewater discharge of 0.09 MGD. Water and wastewater treatment components will consist of: • Rapid mix • Flocculation • Sedimentation basins(1,000,000 gallons) • Eight(8)multi-media filters • Three(3) 1,000,000 gallon clearwells • Two(2) 189,000 gallon thickeners • Solids dewatering Huber Screw Press Page 2 of 9 Permit NC0084573 • Chemical usage consists of: o Alum o Sodium hypochlorite o Sodium hydroxide o Fluoride o Orthophosphate o Sodium thiosulphate 3. Discharge from said treatment works via Outfall 001 at the location specified on the attached map into Lake Norman(Little Creek Arm) [Stream Segment: 11-(75)], a waterbody currently classified WS-IV,B; CA in sub-basin 03-08-32 [HUC: 030501011202] of the Catawba River Basin. • Page 3 of 9 Permit NC0084573 PART I. A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.] Grade I Physical Chemical WPCS [15A NCAC 08G .0302] Beginning with the effective date of this permit and lasting until 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 CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Parameter Code Monthly Daily Measurement Sample Sample Average Maximum Frequency Type Location Flow(MGD) 50050 Monitor&Report Weekly Instantaneous Effluent Duration of Discharge 81381 Monitor&Report Weekly Recorder Effluent Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L 2/Month Grab Effluent Total Residual Chlorine 2 50060 28 pg/L 2/Month Grab Effluent pH 00400 >6.0 s.u.and<9.0 s.0 2/Month Grab Effluent Turbidity(NTU) 00070 Monitor&Report Monthly Grab Effluent Total Aluminum(pg/L) 01105 Monitor&Report Quarterly Grab Effluent Total Manganese(pg/L) 01055 Monitor&Report Quarterly Grab Effluent Total Fluoride(pg/L) 00951 Monitor&Report Quarterly Grab Effluent Total Copper(pg/L) 01042 Monitor&Report Quarterly Grab Effluent Hardness—Total as 00900 Monitor&Report QuarterlyGrab Effluent [CaCO3 or(Ca+Mg)]s(mg/L) p Hardness—Total as a 00900 Monitor&Report Quarterly Grab Upstream 5 [CaCO3 or(Ca+ Mg)] (mg/L) Total Nitrogen(mg/L) C0600 Monitor&Report Quarterly Grab Effluent (NO2+NO3+TKN) Total Phosphorus(mg/L) C0665 Monitor&Report Quarterly Grab Effluent Whole Effluent Toxicity 6 TGP3B Monitor&Report Quarterly Grab Effluent Footnotes: 1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR application system[see Section A. (3)]. 2. The Division shall consider all effluent TRC values reported below 50 pg/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 pg/L. 3. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals (copper). 4. The Permittee shall sample instream hardness,upstream of the facility's discharge. The sample shall be representative of the hardness in the receiving stream. If the Permittee is a member of the Monitoring Coalition Program,sampling for instream hardness may be waived as long as the Monitoring coalition agrees Page 4 of 9 Permit NC0084573 to sample hardness at the nearest upstream location,at a minimum frequency of quarterly,and the Permittee has obtained approval from DWR-NPDES Permitting Unit that the upstream station being monitored by the Coalition is representative of the receiving stream for this discharge.The Permittee is responsible for submittinginstream hardness test results with itspermit renewal application package.If Coalition PP P g membership is cancelled or the Coalition terminates instream hardness sampling at the approved station,the Permittee will immediately notify the Division and resume sampling for instream hardness,upstream of its discharge. 5. Upstream=50 feet upstream of the discharge point. 6. Ceriodaphnia dubia pass/fail test at 0.63%effluent during the months of March,June,September,and December[see Section A.(2)]. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. P y Page 5 of 9 Permit NC0084573 A.(2) CHRONIC TOXICITY PASS/FAIL MONITORING(QUARTERLY) [15A NCAC 02B .0500 et seq.] The permittee shall conduct quarterly chronic toxicity tests using test procedures outlined in the"North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure,"(Revised December 2010, or subsequent versions). The effluent concentration defined as treatment two in the procedure document is 0.63 %. The testing shall be performed as a Ceriodaphnia dubia 7-day pass/fail test. The tests will be performed during the months of March,June, September, and December. 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. All toxicity testing results required as part of this permit condition will be entered electronically using the Division's eDMR system for the month in which it was performed,using the parameter code TGP3B. Additionally,DWR Form AT-1 (original) is to be sent to the following address: North Carolina Division of Water Resources Water Sciences Section/Aquatic Toxicology Branch 1621 Mail Service Center Raleigh,NC 27699-1621 Or,results can be sent to the email,ATForms.ATB@ncdenr.gov. Completed Aquatic ToxicityTest Forms shall be filed with the Water Sciences Section no later than 30 P q days after the end of the reporting period for which the report is made. Test data shall be complete and accurate and include all supporting chemical/physical measurements P PP g performed in association with the toxicity tests,as well as all dose/response data. 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, 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, then monthly monitoring will begin immediately. Upon submission of a valid test,this monthly test requirement will revert to quarterly in the months specified above. Page 6 of 9 Permit NC0084573 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. (3) 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 1. Reporting Requirements [Supersedes Section D.(2.) and Section E. (5.) (a)1 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 Page 7 of 9 Permit NC0084573 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). 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)]. 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- pol lutant-discharge-el imination-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 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 Page 8 of 9 Permit NC0084573 in waiver request maysubmit monitoringdata transferrable. Only permittees with an approved reporting wa ve eq 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 f 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: "1 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.)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. This period may be extended by request of the Director at any time [40 CFR 122.41]. Page 9 of 9 . r r.� i '% I 1. • /',•-.-2-> ! k./ -, ' ' - ______ Ili_ L1 IV C )I P. l-U -- ` •.. __ ! a 1""il s Y� ` V - - l301JNDA r, �� � 61, ' 1- ?`i:� Boat ( i'.4-,:t 1 amp �\ J � r �lilt ( ,? . /`\J I! (`h ',---.:+,------) , ../ *---- ---%,....2.-.,....-- 1,44b '''''',...-----' t- .- , , . . - , L� r _ - ,_) • ? J � '` •Ct /` fr- Out#all ' 1. , yr `�- - 6?).* . . ,s,„ — s as^ ;.). �'• Facility Location ::- t,,� �- /N --/Adi,,\ ' ���7� �L-:7?j . ' , - ' -440,*? "c Wig, • e"----ti'------ .3_-'-'-:--4-.%1..\A.'..-•--• _-, ------0-1-)v -.- ---5_4-_‘, .:, 'CJ ; 1 '--,,, I-�i,'\-.'':-I i..i, ? �..1/''A., tl r.ft I:till /,�" • e. �-4c:41 /r sty e'•-- 1.411 '� , : ''' i,,'"' e (.. ' .� ( — `:r\. 7%o.N.}....) 7.,j ,,.._-___.*,.- ...,,) ( ( -.("--. .44-.-'1.74: (-7-- i --, --r'w;0----,-- --'!-6- •/ 1 Y -• ( . G t Co n ht `z013 N-' :'5 l'Geo ra hie Societ i cubed �..l� . ' e . . h1 1; t �� PY,9 ti .��e u 9 P y/� YC Lincoln County N 5•,���E� ��i+ Lincoln County WTP 4040 '. I��Ir` NPDES Permit NC0084573 t�jr':yainiai ton l�����►`I►��� �� Facility Location , ��`� Receiving Stream: Norman Lake?? Stream Class:WS-IV, B;CA scale not shown V�414 Stream Segment: 11-(75) Sub-Basin#:03-08-32 V? River Basin:Catawba HUC:030501011202 SCALE USGS Quad:Lake Norman North County: Lincoln 1:24,000 35.52917°,-80.99250°