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Home My WebLink AboutNC0046302_Permit Issuance_20121220LF NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Mr. Michael R. Amos Town of Mayodan Water Treatment Plant 210 West Main Street Mayodan, NC 27027 Division of Water Quality Charles Wakild, P.E. Director December 20, 2012 Subject: Issuance of NPDES Permit NCO046302 Town of Mayodan WTP Rockingham County Dear Mr. Amos: Dee Freeman Secretary Division personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). This final permit includes no significant changes from the draft permit sent to you on October 24, 2612. If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding. Please note that this permit is not transferable except after notice to the Division. The Division may require modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain other permits which may be required by the Division of Water Quality or permits required by the Division of Land Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that may be required. If you have any questions concerning this permit, please contact Bob Sledge at telephone number (919) 807- 6398, or via e-mail at bob.sledge@ncdenr.gov. Sincerely, W,,ram l `' �r I/( �r Charles "Wakild, P.E. cc: Central Files Winston-Salem Regional Office/Surface Water Protection Section NPDES File 1617 Mail Service Center, Ralegh, North Carolina 27699-1617 One Location: 512 N. Salisbury St Raleigh, North Carolina 27604 NorthCarolina Phone: 91M07-63001 FAX: 919-607-6492 /ftur�ll� Internetw .nmaterquality.org �Li An Equal Opportunity 1Alfim�ative Action Employer Permit NCO046302 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY c TMI I 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, the Town of Mayodan is hereby authorized to discharge wastewater from a facility located at the Mayodan WTP 500 East Roach Street Mayodan Rockingham County to receiving waters designated as an unnamed tributary to the Mayo River in the Roanoke River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, H, III and IV hereof. This permit shall become effective February 1, 2013. This permit and authorization to discharge shall expire at midnight on May 31, 2017. Signed this day December 20, 2012. Charles Wakild, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit NC0046302 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 Town of Mayodan is hereby authorized to: 1. Discharge decanted conventional water treatment plant filter backwash and filter wastewater from two alternately utilized settling lagoons, with dechlorination prior to discharge. The facility is located at the Mayodan Water Treatment Facility, at 500 East Roach Street, in Mayodan, in Rockingham County. 2. Discharge from said treatment works at the location specified on the attached map into an Unnamed Tributary to the Mayo River, classified WS-1V CA waters in the Roanoke River Basin. Permit NCO046302 j. .S > W2 •• „ ` � �� f r t��4 \``�J/J///// �� \J�V`/ 1, •' l . 8 .. ��Y 1 /=.. � e�� I �J�I��• \\ ; 1'• T .. ?; /'� i 1� J�a 1 } •� 2,53 ^ K May y )\ f 7t ••_ i f __ Y 1 \1✓Jf 69 Quad: B19NW-Mayodan, NC Latitude: 36°25'18" N NCO046302 Longitude: 79°58'04" W ti Facility Y r Location Stream Class: WS-IV CA Town of Mayodan WTP dcat Subbasin: 030202 Receiving Stream: UT to Mayo River Rockingham County Permit NCO046302 A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: EFF 'Y NT�CHARACTERIST,ICSf z Parar�efF ;.ocle LIM TS� MQI hTOR[NGf REQUIRE{�LENTS;: Monh ;� e�� {Daily, ■�++ n m. "Measdreme if Y ..Fre ` ue�nc ` r`Ie T e Sa `� Sample Q . ca ion Flow 50050 Weekly Instantaneous Effluent Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L 21month Grab Effluent pH 00400 z 6.0 s.u. and _< 9.0 s.u. 21month Grab Effluent Total Residual Chlorines 50060 17 pg/L 2/month Grab Effluent Turbidity 00070 21month Grab Effluent Aluminum 01105 Quarterly2 Grab Effluent Total iron 01045 Quarterly2 Grab Effluent Total Copper 01042 Quarterly2 Grab Effluent Manganese 01055 Quarterly2 Grab Effluent Whole Effluent ToAcity Monitoring3 TGA3B Quarterly Grab Effluent Footnotes: 1. 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 µme• 2.. Monitoring should be performed in conjunction with toxicity testing. 3. Ceriodaphnia dubia 48 hour acute pass/fail test @ 90% concentration. See Condition A. (2.) for toxicity'testing requirements. Toxicity testing should be performed during the months of March, June, September and December, and sampling should coincide with sampling for parameters covered by footnote 2. All samples collected should be of a representative discharge. There shall be no floating solids or foam in other than trace amounts. Permit NCO046302 A. (2.) ACUTE TOXICITY PASS/FAIL MONITORING (QUARTERLY) The permittee shall conduct acute toxicity tests on a quarterlX basis using protocols defined in the North Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A Single Effluent Concentration" (Revised December 2010 or subsequent versions). The monitoring shall be performed as a Ceriodaphnia dubia 48 hour static test. The effluent concentration at which there may be at no time significant acute mortality is 90% (defined as treatment two in the procedure document). Effluent samples for self -monitoring purposes must be obtained during representative effluent discharge below all waste treatment. 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. All,toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGA3B. Additionally, DWQ Form AT-2 (original) is to be sent to the following address: Attention: North Carolina Division of Water Quality Environmental Sciences Section 1621 Mail Service Center Raleigh, North Carolina 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Environmental 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" in the comment area of the form. The report shall be submitted to the Environmental 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 until such time that a single test is passed. Upon submission of a valid test, this monthly test requirement will revert to quarterly in the months specified above. 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 either these monitoring requirements or tests performed by the North Carolina Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. Should it be determined by the North Carolina Division of Water Quality that the facility's discharge frequency and duration enable chronic sampling according to either the North Carolina Ceriodaphnia Chronic Whole Effluent Toxicity Procedure or to Section 8.3, in Methods EPA-821-R-02-013, the permit may be re -opened and modified to include chronic toxicity tests. FACT SHEET FOR EXPEDITED PERMIT RENEWALS This form must be completed by Permit Writers for all expedited permits which do not require full Fact Sheets. Expedited permits are generally simple 100% domestics (e.g., schools, mobile home parks, etc) that can be administratively renewed with minor changes, but can include facilities with more complex issues (Special Conditions, 303(d) listed water, toxicity testing, instream monitoring, compliance concerns). Basic Information for Expedited Permit Renewals Permit Writer/Date Bob Sledge 12/20/2012 Permit Number NC0046302 Facility Name Town of Ma odan WTP Basin Name/Sub-basin number Roanoke 03-02-02 Receiving Stream UT to Mao River Stream Classification in Permit WS-IV CA Does permit need Daily Max NH3 limits? No Does permit need TRC limits/language? Added Footnote Does permit have toxicity testing? 48 hour acute ass/fail cerioda hnia added Does permit have Special Conditions? No Does permit have instream monitoring? No Is the stream impaired on 303 d fist)? No Any obvious compliance concerns? No Any permit mods since lastpermit? No Current expiration date 5/31 /2012 New expiration date 5/31/2017 Comments received on Draft Permit? Yes. See below The North Carolina Wildlife Resources Commission (Shari Bryant) commented on the draft permit. Its comments noted the historical presence of endangered, threatened and significantly rare species in the Mayo River. The NCWRC's concerns about the discharge were primarily with regard to chlorine in the effluent. As a result, the NCWRC recommends the facility either move to a non -discharge option for wastewater treatment or install dechlorination or settling basins to reduce chlorine in the effluent. In response to the NCWRC's concerns, it should be noted that the facility does use settling basins for its filter backwash. It also uses dechlorination prior to discharge. Reported effluent values for TRC have been compliant with the terms of the NPDES permit. Because of the way the wastewater is managed, flow volume from the facility is typically very small. In the past, the WTP staff has considered the connection of the WTP discharge to the Town's wastewater collection system. The matter was put on hold upon the hiring of a new town manager, but now that he's become settled in the position, the idea will be floated again. This information has been communicated to Ms. Bryant. It is recommended the permit be issued as drafted. Sledge, Bob From: Bryant. Shari L. Sent: Friday, December 21, 2012 9:26 AM To: Sledge, Bob Subject: RE: NC0085626 Madison WTP; Rockingham Co Bob, Our concerns have been addressed regarding these WTPs. Thanks for responding to our concerns. I hope you have a Merry Christmas and a Happy New Year too. Shari Bryant N.C. Wildlife Resources Commission P.O. Box 129 Sedalia, NC 27342-0129 336.449.7625 sharl.brvant@ncwildlife.orR f Get NC Wildlife Update -- news including season dates, bag limits, legislative updates and more -- delivered to your inbox from the N.C. Wildlife Resources Commission. From: Sledge, Bob Sent: Friday, December 21, 2012 8:32 AM To: Bryant, Shari L. Subject: RE: NC0085626 Madison WTP; Rockingham Co Hi Shari, Merry Christmas and Happy New Year to you and yours. I wanted to follow up with you regarding the NPDES permits for the Madison and Mayodan Water Treatment Plants. For both of these facilities, the primary concern expressed in your memos regarded the potential toxic effects of chlorine in the discharge on aquatic life in the receiving streams. Your recommendations were (1) they pursue a non - discharge option, or (2) use dechlorination or settling basins. I'd responded earlier regarding Mayodan. This facility does use settling basins for its backwash water and basin cleaning. It also uses tablet dechlorination for the low volume of flow that is discharged. Reported chlorine residual has always been compliant since they've been required to monitor for the parameter. The Madison WTP also uses settling basins for its filter backwash and basin cleaning operations. It does not use dechlorination at this time. I spoke to the operator there, who told me it wasn't installed because there is no need. Their basins allow for enough detention time that the chlorine volatilizes before it has to be discharged. This seems very reasonable; they're only receiving the chlorine from the potable water that's used to backwash. It's not like a WWTP where chlorine addition is one of the final processes before discharge. Reported chlorine values for this plant are uniformly low also. Both WTPs are looking into tying into the Town of Mayodan's wastewater collection system. Based on the current situations at the WTP's, we are planning to issue the permits as drafted. I hope the discussion above addresses the WRC's concerns. Perhaps we will soon see both of these discharge eliminated. 1 i I Please call or reply if you have any questions. Thank you, Bob From: Bryant, Shari L. Sent: Wednesday, November 14, 2012 10:23 AM To: Sledge, Bob Subject NC0085626 Madison WTP; Rockingham Co Bob, Please find attached our comments on the subject permit renewal. Thanks. Shari Bryant N.C. Wildlife Resources Commission P.O. Box 129 Sedalia, NC 27342-0129 336.449.7625 shari.bryant@ncwildlife.ort? Get NC Wildlife Update — news including season dates, bag limits, legislative updates and more -- delivered to your Inbox from the N.C. Wildlife Resources Commission. Emx! eonwpon&wco W and tram this sender is suhina to the N.C. Rutim Records Lmv and mny be diaUosod to ttuid paities. 2 Sledge, Bob From: Thomas, Mike Sent: Friday, October 19, 20121:47 PM To: Sledge, Bob Subject: Mayodan WTP Bob, No harm done. I am in agreement that if they are not getting a discharge then they should consider it no flow. I was unaware that they were sampling at the end of the lagoon. Thanks Mike S. Thomas NC DENR Division of Water Quality 585 Waughtown Street Winston-Salem, NC 27107 (336)772-5000 Fax (336) 771-4630 E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. Sledge, Bob From: Bryant, Shari L. Sent: Wednesday, November 14, 2012 10:27 AM To: Sledge, Bob Subject: RE: NC0046302 Mayodan WTP. Rockingham Co. Bob, Yes, that is good to know. Thanks for responding so quickly. O Shari Bryant N.C. Wildlife Resources Commission P.O. Box 129 Sedalia, NC 27342-0129 336.449.7625 shari.bryant@ncwildlife.ortz Get NC Wildlife Update -- news including season dates, bag limits, legislative updates and more — delivered to your Inbox from the N.C. Wildlife Resources Commission. ..._................._.............__......................._._......_............_.............__._..._._.._.........__......_..............._......................................._......._.......................................__._....._......._...._._..._.................................................. From: Sledge, Bob Sent: Wednesday, November 14, 201210:24 AM To: Bryant, Shari L. Subject: RE: NC0046302 Mayodan WTP, Rockingham Co. Hi Shari, Thank you for the comments. Hopefully this will ease your mind a bit with regard to this discharge. The facility already has dechlorination in place. The chlorine residual measured in the discharge is usually very low. The way they manage the facility and the lagoons on site leads to them discharging only small volumes of wastewater, usually described as "a trickle," even by our own inspectors. In the past, because of the low volume of the discharge, the Town has looked into connecting this discharge to the Town's wastewater collection system. The Town has experienced some recent changes in its management. As a result, the matter of connection has fallen off the radar as the Town deals with other issues, but it will be reconsidered in the future. I'll update the facility description in the permit to note they do dechlorinate. Bob .... _...... ............... ..... __ .. __ ._ . ................ --_ _ ..._ ........ .. _ .._....._._.. ..... From: Bryant, Shari L. Sent: Wednesday, November 14, 2012 9:46 AM To: Sledge, Bob Subject: NC0046302 Mayodan WTP, Rockingham Co. Bob, Please find attached our comments on the subject permit renewal. Thanks. Shari Bryant N.C. Wildlife Resources Commission P.O. Box 129 Sedalia, NC 27342-0129 336.449,7625 shari.bryant@ncwildlife.org Get NC Wildlife Update — news including season dates, bag limits, legislative updates and more — delivered to your Inbox from the N.C. Wildlife Resources Commission. Emad conttspondence to and from thiv semdoi la subject to t4tr N.C. PuU;r Recor da Law and may be dssclosed to this d parties. 1 1 2 0 North Carolina Wildlife Resources Commission Gordon Myers, Executive Director MEMORANDUM TO: Bob Sledge, Surface Water Protection Section —Point Source Branch Division of Water Quality FROM: Shari L. Bryant, Piedmont Region Coordinator Habitat Conservation Program DATE: 14 November 2012 SUBJECT: Draft NPDES Permit for Mayodan Water Treatment Plant, Rockingham County, NPDES Permit No. NC0046302 Biologists with the North Carolina Wildlife Resources Commission have reviewed the subject document. Our comments are provided in accordance with provisions of the Clean Water Act of 1977 (as amended), Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667e), North Carolina General Statutes (G.S. 113-131 et seq.), and North Carolina Administrative Code 15A NCAC 10I.0102. The Town of Mayodan has applied for a renewal of their NPDES permit to discharge filter backwash wastewater to an unnamed tributary to the Mayo River in the Roanoke River Basin. According to the public notice, Total Residual Chlorine is currently water quality limited. There are records for the federal and state endangered James spinymussel (Pleurobema collina) and Roanoke logperch (Percina rex); the federal species of concern and state endangered green floater (Lasmigona subviridis); the state threatened bigeye jumprock (Moxostoma ariommum); the state special concern notched rainbow (Villosa constricta) and riverweed darter (Etheostoma podostemone); and the state significantly rare Roanoke hogsucker (Hypentelium roanokense) in Mayo River. Also the Significant Natural Heritage Area — Mayo River Aquatic Habitat — is located in this section of the Mayo River. Chlorine is acutely toxic and can form secondary compounds that are detrimental to aquatic life. Valenti (2006) concluded the impact of long term exposure to low doses of chlorine may impact juvenile mussels and reduce the chance of them being recruited to the reproducing population. Due to the presence of several rare and sensitive species in Mayo River, we offer the following recommendations to minimize impacts to aquatic resources. 1. Use a non -discharge option for filter backwash wastewater. Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • Raleigh, NC 27699-1721 Telephone: (919) 707-0220 • Fax: (919) 707-0028 Page 2 14 November 2012 Mayodan WTP NPDES Permit No. NCO046302 2. If non -discharge is not an option, then use dechlorination or settling basins to further reduce or eliminate chlorine in the discharge water. Thank you for the opportunity to comment on this permit renewal. If we can be of further assistance, please contact our office at (336) 449-7625 or shari.bryant a,ncwildlife.org. Literature cited Valenti, T.W., D.S. Cherry, R.J. Currie, R.J. Neves, J.W. Jones, R. Mair, and C.M. Kane. 2006. Chlorine toxicity to early life stages of freshwater mussels (Bivalvia: Unionidae). Environmental Toxicology and Chemistry, 25(9):2512-2518. ec: Rob Nichols, WRC 7 ' M CDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Charles Waitild, P.E. Dee Freeman Governor Director secretary October 24, 2012 MEMORANDUM To: Lisa Edwards, P.E. NC DENR / DWR / P`liTS Regional Engineer Winston-Salem Regional Office From: Bob Sled geO Compliance & Expedited Permitting Unit a 1 Subject: Review of Draft NPDES Permit NCO046302 Town of Mayodan, Water Treatment Plant Rockingham County Please indicate below your agency's position or viewpoint on the draft permit and return this form by November 21, 2012. If you have any questions on the draft permit, please contact me at (919) 807- 6398 or via e-mail at bob.stedge@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. F] 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: 1617 Mali Service Center, Raleigh, North Carolina 27699.1617 Location; 512 N. Salisbury St Raleigh, {forth Carolina 27604 1NaA p�lCa rohna Phone: 919-807�63001 FAX: 919-807�492 ��Internetwww.ncwaterquallty orgj/ An Equd OpporWIty I Aflirmative Acgon Employer �/ 0he iarthouillk laruii'iit EDEN Min NEWS The Messenger Advertising Affidavit NCDENR/DWQ/POINT SOURCE BRANCH 1617 MAIL SERVICE CENTER RALEIGH, NC 27699-1617 P.O. Box 2157 Reidsville, NC 27323-2157 (336)349-4331 Date Category Description Ad Size 1013112012 Legal Notices Public Notice Public Notice North Carolina Environmental Management commissfon/NPOES Unit 1617 Mail service Center. Raleigh, NC 27699.1617 Notice Of intent Wastewater Permit issue a mentNComm Commission Proprolina oses toeissule a wastewater discharge permit to the pe listed below. Written comments regarc proposed permit will be accepted until after the publish date of this notice. Th for of the NC Division of Water Quality may hold a public hearing should there I nificant degree. of public interest. Plez er on nng .,.,.--- -. f Madison requested renewal of per- 526 for the Madison WTP in Rocking- y; this permitted discharge is filter water to an unnamed tributary to Island Creek in the Roanoke River ayodan requested renewal of Onty; th sh permitted disWarge -h wastewater to an unnamed Mayo River in the Roanoke Riv- 1 x39L Publisher of the Reidsville Rev Account Number 3390343 Date October 31, 2012 This is to certify that the attached Public Notice was published by the Reidsville Rev in the State of North Carolina, on the following dates: 10/31/2012 The First insertion being given ... 10/31/2012 Newspaper reference: 0002814016 Sworn to and subscribed before me this Notary Public Supervisor SARAH D.GENTRY jrNotary Public UI I Commonwealth of Virginia State of w Reg,#320673 ' if' ldy Commlulon EMplraa Jan. 31.2013 My Commission expires THIS IS NOT A BILL. PLEASE PAY FROM INVOICE. THANK YOU MPY0 Lj I ?k 14- - 0 'nx Permit Number: a a n TFacility Name: PC 00 y 6 3 0 2 Type of WTP: Conventional Greensand Filter Reverse Osmosis Person Contacted: M 1 J1 Q*f-' i Amo s 3 3 C Y Q7 - 3 M Date/Time: Lco ahlIs'n r 1 rid present in water used to backwash filters? If no, what is source water is used . Does the facility use zinc orthophosphate as a corrosion inhibitor? Yes No Does the facility use chloramines as an alternate form of disinfection? Yes No Yes rNo) Highest Reported Monthly Average Flow over past three years: U . 07 6 ,,I MGD " a`"'i DrJc 4r3e Is effluent flow to receiving stream Continuous or Intermittent. How Intermittent. '1 1 /� a fft�le, Receiving Stream: 1 7 a MGX o K i V e K 7Q 10 Flow: Source: �s�► �,a� e - !,� a IWC: �G a Discharge to NSW waters? (SO Discharge to water supply waters? Is the stream impaired/on 303d list? Any oNo\4-�O -5 , -r Yes No S S Yes No If yes, for what? Q ��. ►�,� h r� o1e AS i�C 7J 0� C h !( A A ly r �d7 Mayodan WTP REASONABLE POTENTIAL ANALYSIS Outfall 001 NCOO463O2 ow = n_nnnl mcm Acute: NO WQS Fluoride NC 1800 FW(7Q l Os) ug/L 0 0 N/A _ _ Chronic:---- 1,800.0 — --------------------------- Acute: 33.8 Lead NC 25 F W(7Q 10s) 33.8 ug/L 0 0 N/A _ _ _ _ _ Chroni_c:----- 25.0 -- --------------------------- Acute: NO WQS Mercury NC 12 FW(7Q10s) 0.5 ng/L 0 0 N/A --------------------------- Acute: NO WQS Molybdenum NC 2000 HH(7Q1Os) ug/L 0 0 N/A __ _ Chronic:----2,000.0 — --------------------------- Acute: 261.0 Nickel NC 88 FW(7QIOs) 261 ug/L 0 0 N/A __ _ _:----- 8_ _ Chronic8.0 -- --------------------------- Acute: 56.0 Selenium NC 5 FW(7QlOs) 56 ug/L 0 0 N/A __ _ _ _ Chronic:----- _ 5.0 -- --------------------------- Acute: 1.230 Silver (AL) NC 0.06 FW(7Q1 Os) 1.23 ug/L 0 0 N/A Chronic: _ _-----0.060-- --------------------------- Acute: 67.0 Zinc (AL) NC 50 FW(7Q 1 Os) 67 ug/L 0 0 N/A _ _ _0.0 _ Chronic:----- 5-- --------------------------- Iron NC lOOO FW(7QlOs) µg/l 153 111 3,154.00000 Acute: NO WQS _ Maintain monitoring at Quarterly frequency --------------------------- Chronic:--- 1000_.00000 1 values > Allowable Cw Acute: 0 0 N/A ----------- ronic: ------- ------------------- Acute: 0 0 N/A ----------- Chronic: -------------------------- Acute: 0 0 N/A ----------- Chronic: ------------- -------------- NC0046302 2011 RPA-Freshwater.xlsm, rpa Page 2 of 2 10/18/2012 TOWN OF MAYODAN 210 W. MAIN STREET • MAYODAN, N.C. 27027 • (336) 427-0241 FAX (336) 427-7592 i November 14, 2011 Mrs. Dina Sprinkle NC DENR / DWQ / Point Source Branch 1617 Mail Service Center Raleigh, NC 27699-1617 Subject: Renewal Notice NPDES NC0046302 Mayodan WTP Rockingham County The Town of Mayodan is requesting renewal of NPDES NC0046302. There are currently no changes at the facility. Sincerely, Michael R. Amos NPDES ORC NOV 15 2011 NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants Mail the complete application to: N. C. Department of Environment and Natural Resources Division of Water Quality / NPDES Unit 1617 Mail Service Center, Raleigh, NC 27699-1617 NPDES Permit Number INCO046302 If you are completing this form in computer use the TAB key or the up - down arrows to move from one field to the next. To check the boxes, click your mouse on top of the box Otherwise, please print or type. 1. Contact Information: Owner Name Town of Mayodan Facility Name Mayodan Water Treatment Plant Mailing Address 210 W. Main Street City Mayodan State / Zip Code NC/27027 Telephone Number (336)427-3339 Fax Number (336)427-7592 e-mail Address mayowtp@triad.twcbc.com 2. Location of facility producing discharge: Check here if same as above ❑ Street Address or State Road 500 E. Roach Street City Mayodan State / Zip Code NC/27027 County Rockingham 3. Operator Information: Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the Operator in Responsible Charge or ORC) Name Town of Mayodan Mailing Address 210 W. Main Street City Mayodan State / Zip Code NC/27027 Telephone Number (336)427-3339 Fax Number (336)427-7592 N O V 15 7011 IL 4. Ownership Status: DENR-WATER QU POINT SOURCE Bf Federal ❑ State ❑ Private ❑ Pu 5. Type of treatment plant: Pagel of 3 C-WTP 03/05 NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants ® Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by filtration and disinfection) ❑ Ion Exchange (Sodium Cycle Cationic ion exchange) ❑ Green Sand Filter (No sodium recharge) ❑ Membrane Technology (RO, nanofiltration) Check here if the treatment process also uses a water softener ❑ 6. Description of source water(s) (i.e. groundwater, surface water) Surface Water ?. Describe the treatment process(es) for the raw water: Conventional treatment: Alum coagulation, flocculation and sedimentation, followed by filtration and disinfection. S. Describe the wastewater and the treatment process(es) for wastewater generated by the facility: Wastewater is produced by wasting the settled solids and filter backwash solids to the wastewater lagoons. Wastewater is allowed to settle in lagoons with no chemical treatment, however, dechlor tablets are used to dechlorinate effluent prior to discharging into receiving stream. 9. Number of separate discharge points: 1 Outfall Identification number(s) 10. Frequency of discharge: Continuous ❑ Intermittent If intermittent: Days per week discharge occurs: 7 Duration: varies 11. Plant design potable flowrate 3.0 MGD Backwash or reject flow 6.2 MGD 12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including latitude and longitudeft Unknown tributary of Mayo river, Latitude 36 25' 18" Longitude 79 58' 04" 13. Please list all water treatment additives, including cleaning chemicals or disinfection treatments, that have the potential to be discharged. Page 2 of 3 C-WTP 03/05 NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants Alum Sodium Hydroxide Chlorine Polyphosphate Poly Aluminum Chloride PAC (seasonal) 14. Is this facility located on Indian country? (check one) Yes ❑ No 15. Additional Information: Provide a schematic of flow through the facility, include flow volumes at all points in the treatment process, and point of addition of chemicals. Solids Handling Plan 16. NEW Applicants Information needed in addition to items 1-15: > New applicants must contact a permit coordinator with the NCDENR Customer Service Center. Was the Customer Service Center contacted? ❑ Yes ❑ No Analyses of source water collected Engineering Alternative Analysis Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a water quality model. 17. Applicant Certification I certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief such information is true, complete, and accurate. Michael R. Amos ORC Printed name of Person Signing Title /y— Date North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false statement representation, or certification in any application, record, report, plan, or other document files or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or monitoring device or method required to be operated or maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than 5 years, or both, for a similar offense.) Page 3 of 3 C-WTP 03/05 Mayodan WTP Schematic Flash Milt Alum & Sodium hydroxide SEL PAC (seasonal) Flushed & Cleaned quarterly Lagoon #2 Currently No Floccculation discharge. Basins Flushed & Cleaned quarterly. Lagoon #1 Currently Sedimentation In Use Basins Dechlor Flushed weekly tablets used Cleaned quarterly. prior to discharge. n NPDES �I 0046302 Multimedia Filters Pre -Chlorine Added Backwash Solids. Daily discharge. HI Clearwell Tank Sodium Hydroxide, Polyphosphate, & Post Chlorine added upstream of this tank. Mayo River High Level Storage Tank Drinking Water Raw Pump Station 9 Mayodan Water Treatment Plant Solids Handling Plan NPDES NCO046302 Land Application # WQ0002672 Every 2-3 years or as needed, solids from the lagoon are pumped out by McGill Environmental Systems and removed from site. Solids are then composted.