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HomeMy WebLinkAboutNC0082759_20180404_Draft Permit ROY COOPER Governw N .K MICHAEL S REGAN Sea etary LINDA CULPEPPER Water Resources Interni Director ENVIRONMENTAL QUALITY April 4, 2018 Mr. Marion Workman, President Orange Alamance Water System PO Box 187 Mebane,NC 27302-0187 Subject: Draft NPDES Permit NC0082759 Orange-Alamance Water System WTP Class PC-1 Orange County Dear Mr. Workman: 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: > Language has been added in Section A. (1) and as Section A. (3)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. > Outfall map has been updated. > Language has been updated on the Supplement to Permit Cover Sheet per the current water treatment plant strategy. > The stream classification and segment number have been updated based on the NC Surface Water Classifications website. > Parameter codes and units of measure have been added in Section A. (1). > Monitoring frequency for turbidity has been decreased to monthly per the current water treatment plant guidance. > Monitoring for Total Iron has been removed per the current water treatment plant guidance. > Limits have been added for Total Copper and monitoring has been increased to monthly based on a reasonable potential to exceed water quality standards. > Quarterly Total Hardness monitoring and associated footnotes have been added in Section A. (1) per the current water treatment plant strategy. > The footnote stating monitoring should be performed in conjunction with toxicity testing was removed in Section A. (1) as this is no longer required. > The toxicity footnote has been updated in Section A. (1). > The instream waste concentration(IWC)has been updated in Sections A. (1) and A. (2)based on the most recent reject flow information. > Language in Section A. (2)has been updated. 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 With this notification, the Division will solicit public comment on this draft permit by publishing a notice in newspapers having circulation in the general Orange 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 919-807-6333, or via e-mail [Brianna.Young@ncdenr.gov]. Sincerely, B Young )- Y Compliance and Expedited Permitting Unit cc: NPDES Files ec: Raleigh Regional Office Wastewater Operator Certification Group WSS/Aquatic Toxicology Branch DWR/Public Water Supply Permit NC0082759 Class PC-1 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 provision 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, the Orange-Alamance Water System, Inc. is hereby authorized to discharge wastewater from a facility located at the Orange-Alamance Water System WTP 2101 US Hwy 70 East Efland Orange County to receiving waters designated as the Eno River in the Neuse River Basin in accordance with effluent limitations, monitoring requirements, and other applicable 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. Linda Culpepper Interim Director, Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 8 Permit NC0082759 Class PC-1 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. The Orange-Alamance Water System is hereby authorized to: 1. Continue to operate a Conventional water treatment plant with a discharge of wastewaters from filter-backwash. This water treatment plant currently has a design potable flowrate of 0.9 MGD and a maximum, monthly average wastewater discharge of approximately 0.0284 MGD. This facility is located at 2101 US Highway 70 East in Efland in Orange County. Water and wastewater treatment consists of: • Alum • Polymer • Potassium Permanganate • Caustic(as needed) • Sedimentation basin • Filtration • Chlorination • Dechlorination with calcium thiosulfate • Primary and secondary lagoons 2. Discharge from said treatment works at the location specified on the attached map into the Eno River [Stream Segment: 27-2-(5.5)], a waterbody currently classified WS-II; NSW, HQW, CA waters [HUC: 0302020103] in subbasm 03-04-01 in the Neuse River Basin. Page 2 of 8 Permit NC0082759 Class PC-1 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 this permit and lasting until expiration,the Permittee is authorized to discharge filter backwash from outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below: EFFLUENT CHARACTERISTIC LIMITS MONITORING REQUIREMENTS Parameter Code Monthly Daily Measurement Sample ' Sample Average Maximum Frequency Type Location Flow(MGD) 50050 Continuous Recording Effluent Total Suspended Solids C0530 30 mg/L 45 mg/L 2/Month Grab Effluent pH 00400 >—6 0 and s 9.0 s.0 2/Month Grab Effluent Total Residual Chlonne2 50060 28 pg/L 2/Month Grab Effluent Turbidity(NTU) 00070 Monitor&Report Monthly Grab Effluent Total Copper 01042 49 59 pg/L 57.23 pg/L Monthly Grab Effluent Aluminum(pg/L) 01105 Monitor&Report Quarterly Grab Effluent Fluonde(pg/L) 00951 Monitor&Report Quarterly Grab Effluent Manganese(pg/L) 01055 Monitor&Report Quarterly Grab Effluent Ammonia Nitrogen(mg/L) C0610 Monitor&Report Quarterly Grab Effluent Total Phosphorus(TP) (mg/L) C0665 Monitor&Report Quarterly Grab Effluent Total Nitrogen (TN) (mg/L) C0600 Monitor&Report Quarterly Grab Effluent Hardness—Total as 00900 Monitor&Report Quarterly Grab Effluent [CaCO3 or(Ca+Mg)]3 Hardness—Total as 00900 Monitor&Report Quarterly Grab Upstream [CaCO3 or(Ca+Mg)]4 Whole Effluent Toxicity Monitoring 5 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. Limit and monitor only if facility adds chlorine to water that is eventually discharged.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. 3. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals (cadmium, copper, lead, nickel, silver, and zinc). 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 mstream hardness may be waived as long as the Monitoring coalition agrees 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 submitting mstream hardness test results with its permit renewal application package If Coalition 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. Page 3 of 8 Permit NC0082759 Class PC-1 5 Chronic toxicity monitoring required at 8%effluent concentration during the months of January,April,July, and October. See Section A. (2)for more information. All samples collected should be from a representative discharge event. There shall be no discharge of floating solids or visible foam in other than trace amounts. Page 4 of 8 Permit NC0082759 Class PC-1 A. (2) CHRONIC TOXICITY 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 8 %. The testing shall be performed as a Ceriodaphnia dubia 7-day pass/fail test. The tests will be performed during the months of January,April,July,and October. 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 on the Effluent Discharge Monitonng Form(MR-1) for the month m which it was performed,using the parameter code TGP3B. Additionally,DWR Form AT-1 (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 and accurate and include all supporting chemical/physical measurements 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"m 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. 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 monitonng 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. Page 5 of 8 Permit NC0082759 Class PC-1 A. (3) ELECTRONIC REPORTING OF MONITORING REPORTS [NCGS 143-215.1 (b)] Federal regulations require electronic submittal of all discharge monitonng reports(DMRs)and program reports. The fmal 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)l The permittee shall report discharge monitonng data electronically usmg 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 submittmg one signed original and a copy of the computer printed eDMR 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 ,'` 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 mailmg address above. See"How to Request a Waiver from Electronic Reportmg"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 reportmg waiver from the Division(see"How to Request a Waiver from Electromc Reportmg"section below). Page 6 of 8 Permit NC0082759 Class PC-1 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 mitral 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 receivmg 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-ehmination- system-npdes-electronic-reporting-rule Electronic submissions must start by the dates listed m 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 obtam 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 cert fy, 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 " Page 7 of 8 Permit NC0082759 Class PC-1 5. Records Retention [Supplements Section D. (6.)1 The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. 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Orange-Alamance Water System WTP 46.4014100.01 [ ./. • NPDES Permit NC0082759 A (ow Facility '�/1� �l��I►��rt* 4 Facility Location ~mij��� `� Receiving Stream: Eno River Stream Class:WS-II; NSW, HOW, CA - scale not shown 1PSOI Stream Segment: 27-2-(5.5) Sub-Basin#:03-04-01 River Basin: Neuse HUC:0302020103 SCALE USGS Quad:Efland County:Orange 1:24,000 36.08333°,-79.14028°