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HomeMy WebLinkAboutNC0089737_Application_20180720 McGill ASSOCIATES July 20, 2018 RECEIVED/DENR/DWR Ms. Brianna Young JUL 2 4 2018 Environmental Senior Specialist Department of Environmental Quality Water Resources Division of Water Resources Permitting Section Compliance and Expedited Permitting Unit 1617 Mail Service Center Raleigh,North Carolina 27699-1617 RE: Water Treatment Plant Upgrade Town of Franklin NPDES Application Permit#NC0089737 Macon County Dear Ms. Young: I have received your review letter dated June 8,2018 for the NPDES permit application for the Town of Franklin Water Treatment Plant, NPDES Permit NC0089737. I am providing and enclosing the following additional information as requested per your letter: Item 1: You requested an updated flow schematic for the Water Treatment Plant and the NPDES permit sampling point to be included. Attached is the updated schematic. The red flow lines and arrows represents raw and finished water through the WTP. The green lines and flow arrows represent the wastewater flow.Note that the NPDES sampling point will be the outlet of the second lagoon prior to discharge to Cartoogehaye Creek. Item#2: I am enclosing the test results for the wastewater discharge from the WTP. This sample for testing was taken from the lagoons as previously discussed given the fact that there is no discharge from the facility at this time. The testing for the aquatic toxicity using Ceriodaphnia dubia at 90% effluent is underway and will be completed in the next 30 days. Once I obtain those results I will get them to you. 55 Broad Street P.O. Box 2259 ph: 828.252.0575 Asheville,North Carolina 28801 Asheville,North Carolina 28802 f. 828.252.2518 www.megillengineers.com Item#3 I am enclosing an email from John Curtis Weaver at USGS which has the information requested on low flows in Cartoogehaye Creek at the discharge location. USGS determined the drainage area at the discharge location to be 46 square miles. The Estimated Annual average 7Q10 discharge is 20.2 cfs and the 30Q2 discharge is 39.1 cfs with an annual average discharge of 110 cfs. Item#4: With reference to the EAA request I will be forwarding to you a letter from the Town of Franklin in the next week which addresses their position as to accepting water from the WTP wastewater flow into the town's wastewater collection and treatment system. A copy of the draft letter I enclosed. The previous information submitted with the EAA included a comparison of the cost for discharge to the town's WWTP,but did not include this letter. I am also in the process of amending and supplementing the information in the EAA related to alternative B for land disposal and will be including information for subsurface (septic drain field) and drip irrigation. Dr. Bob Rubin from NC State is assisting me with this evaluation to provide supplemental information. Once I receive the additional information I will forward it to you. In the meantime,if there are any questions please give me a call at 828-252-0575 or email at keith.webb@mcgillengineers.com. Sincerely, McGIL ASSOCIATES, P.A. Clad A KEITH WEBB, P.E. Vice President-Principal Attachments CC; Summer Woodard—Franklin Nathanael Moore—Franklin w/attachment Rob Hartsell—Franklin J.Meliski-McGill Associates w/attachment 15.00359/Franklin WTP/NPDES/by20july18-npdes response ROY COOPER • • = MICHAEL S. REGAN .SPC12![.;1 LINDA CULPEPPER Water Resources r+rrr.t+„rn.ETlo ENVIRONMENTAL QUALITY June 8,2018 CERTIFIED MAIL 7016 2140 0000 4371 1391 RETURN RECEIPT REQUESTED Ms. Summer Woodard Town of Franklin PO Box 1479 Franklin,NC 28744-1479 Subject: Request for Additional Information NPDES New Permit Application Town of Franklin WTP NPDES Permit NC0089737 Macon County Dear Ms, Woodard: The Division has reviewed your application,received on November 14,2017,for a new NPDES permit NC0089737.To enable us to complete our review in accordance with N.C.G.S. 143-215.1 and 15A NCAC 2H.0105,we need additional or revised information regarding your discharge: 1. The schematic provided with the application should show the proposed sampling point,the outfall, and the flow of the discharge through the property all the way to the discharge point The updated information received by the Division is unclear as to where the proposed sampling point will be located. Please Indicate where the proposed sampling point will be along with the outfall location. 2. As stated in the previous additional information request,all new applicants are required to provide an analysis of the source water.The information provided t©the Division is incomplete. As this is an existing water treatment plant, a complete analysis of the proposed discharge is required for the following parameters:Aluminum,Arsenic,Barium,Beta Particles, Calcium,Chloride, Copper,Iron,Magnesium,Manganese,Ammonia-Nitrogen, Nitrogen-Nitrate+Nitrite,Total Phosphorus, Total Nitrogen[TN='TKN+(Nitrites +Nitrates)],Total Dissolved Solids,Total Suspended Solids,Zinc,Lead,pH,Radium 226& 228(pCi/L), and three(3)aquatic toxicity tests using Ceriodaphnia rdubia at 90%effluent concentration,or estimated dilution,or perform a multi-concentration test.The results for all samples tested should be submitted to the Division for review. If you have questions regarding the appropriate test methods for the toxicity tests,please contact Susan Meadows with the Aquatic Toxicology Branch at 919-743-8439 or susan.meadows®ncdenr.gov. 3. The previous additional information request asked for information from US Geological Survey staff regarding 7Q10, 30Q2,and Qave]age at the location of Outfall 001,located at State of North Carolina I Environmental Quality f Water Resources 1617 Mall service Center I Raleigh,North Carolina 27699-1617 919 807 6300 Ms.Summer Woodard June 8,2018 Latitude: 35°09' 44"N,Longitude: 83°26' 13"W(per the application). The updated information received by the Division was not from the requested staff member.Please contact the following staff member with the US Geological Survey to obtain the most recent receiving stream flow data: J. Curtis Weaver, Hydrologist,PE USGS North Carolina Water Science Center 3916 Sunset Ridge Road Raleigh,NC 27607 Phone:(919) 571-4043 // Fax:(919)571-4041 E-mail address--jcweaver@usgs.gov Internet address--http://nc.water.usgs.gov/ 4. Step 3 of the EAA requires alternatives be evaluated.Two of the alternatives required by the EAA to be evaluated are connecting to an existing WWTP(Alternative A)and land application(Alternative B). Materials provided have stated that connecting to an existing WWTP(Alternative A)is not a feasible alternative.Alternative A(1)(b)states:"Provide a preliminary indication of flow acceptance from existing municipal or private WWTPs under consideration for connection.If a municipal or private WWTP cannot accept the wastewater, include a letter documenting such and consider this alternative technologically infeasible." This letter has not been submitted to justify an existing WWTP not accepting the wastewater. Alternative B requires that a subsurface system(septic drain field)and drip irrigation be evaluated.These alternatives were not evaluated. Please submit the required information for Alternatives A and B. If no response is received within 60 calendar days[per 15A NCAC 2H.0107(b)],the application will be returned. If you have any questions,please contact Brianna Young of my staff at 919-807- 6333 or via email at brianna.young@ncdenr.gov. Sincerely, John Hennessy,Supervisor Compliance and Expedited Permitting Unit cc: NPDES Permit Files Central Files DWR/ARO/WQROPS ec: Keith Webb,McGill Engineers[Keith.Webb@Mcgillengineers.com] ITEM#1 INFORMATION r DISCHARGE POINT EFFLUENT DISCHARGE " PLAN 47, NOT TO SCALE ALUM SLUDGE LAGOON #2 4b• ,:, ALUM SLUDGE LAGOON #1 RAW WATER • PUMP STATION NPDES SAMPLING POINT (SUMP IN OUTLET WEIR STRUCTURE) FLOW EO. TANK a HIGH SERVICE PUMP STATIONt I (WATER TO 'ZDISTRIBUTION . a SYSTEM) a SED. . \ SINS t; 1 FILTER BUILDING E N ACTIFLO PRETREATMENT NBUILDING LEGEND N RAW/ FINISHED WATER W Z WITH FLOW DIRECTION 0 TP WASTEWATER FLOW 3 WWITH FLOW DIRECTION FINISHED WATER o TO DISTRIBUTION ri • 1 WATER TREATMENT PLANT OB NO. 15.00359 ,� �� DETE. APRIL.2018 FIGURE NPDES PERMIT APPLICATION DESIGNEDBn MC GADDBr BW DESIGN REVIEWWATER TREATMENT PLANT . g. A S S O C I A T E S TOWN OF FRANKLIN CONST.REVIEW SCHEMATIC I. ENGINEERING PLANNING FINANCP. FILENAME Schema,'''''' . ',i'''.2'246'' �...,�,'M.�.. MACON COUNTY, NORTH CAROLINA Rev,sea.awg ITEM#2 INFORMATION PO Box 7565 J k R#44,2,' .N. ., Asheville, NC 28802 `= Phone: (828)350-9364 C'1 "`� ` Fax: (828)350-9368 Environmental Testing Solutions,Inc. Certificate of Analysis Project name: Town of Franklin Project number: 180622.500 Collection date: 21-Jun-18 Date received: 21-Jun-18 Sample identification: Sludge Lagoon-Grab Sample number: 160033 Parameter Method Result RL Units Date Analyst Footnotes Analyzed Dissolved Solids SM 2540 C 35 10 mg/L 22-Jun-18 KEK Solids,Total Suspended SM 2540 D 7.6 5.0 mg/L 27-Jun-18 KEK Chloride,Total SM 4500 Cl 7.0 1.0 mg/L 22-Jun-18 KEK Ammonia Nitrogen SM 4500 NH3 H <0.10 0.10 mg/L 28-Jun-18 KEK pH SM 4500 H+B 7.0 S.U. 22-Jun-18 KEK 2 Nitrate+Nitrite as N SM4500-NO3 H <0.10 0.10 mg/L 2-Jul-18 REH 1 Total Phosphorus 200.7 <0.0020 0.020 mg/L 6-Jul-18 MEC 1 Total Kjeldahl Nitrogen 351.2 0.18 0.10 mg/L 5-Jul-18 SEB 1 Total Nitrogen Calculation 0.18 0.10 mg/L 5-Jul-18 SEB 1 Aluminum, 200.7 0.38 0.050 mg/L 6-Jul-18 MEC 1 Arsenic 200.8 <0.010 0.010 mg/L 29-Jun-18 MLR 1 Barium 200.7 <0.010 0.010 mg/L 6-Jul-18 MEC 1 Calcium 200.7 1.5 0.050 mg/L 6-Jul-18 MEC 1 Copper 200.8 <0.001 0.001 mg/L 29-Jun-18 MLR 1 Iron 200.7 <0.050 0.050 mg/L 6-Jul-18 MEC 1 Lead 200.8 <0.005 0.005 mg/L 29-Jun-18 MLR 1 Magnesium 200.7 0.87 0.050 mg/L 6-Jul-18 MEC 1 Manganese 200.8 0.089 0.005 mg/L 29-Jun-18 MLR 1 Zinc 200.8 <0.010 0.010 mg/L 29-Jun-18 MLR 1 Footnotes: RL=Reporting Limit. Values are reported down to the Reporting Limit only. 1. Analyzed by Rogers&Callcott Environmental. 2. Sample analzyed outside hold time,per client request. Date reviewed: Oq-13. O NC Certification Number: 600 Data reviewed by: Kelley E.Keenan SC Certification Number: 99053 NC Drinking Water Certification Number: 37786 Signature: This report should not be reproduced,exept in its entirety,without the written consent of Environmental Testing Solutions,Inc The results in this report relate only to the samples submitted for analysis 8r _" Rogers &Caticott Btali � �'#i'� 11 ENVIRONMENTAL APigs"O South Carolina Greenville Laboratory Identification 23105 South Carolina Columbia Laboratory Identification 40572 Certificate of Analysis North Carolina Laboratory Certification Number 27 North Carolina Drinking Water Lab Number 45710 NELAP Utah Certificate Number SC000042014-1 Georgia Drinking Water Lab ID 880 Client Environmental Testing Solutions Project: Franklin WTP Kelley E Keenan Work Order: 8061129 351 Depot St. Received: 06/27/2018 10.00 Asheville,NC 28801-4310 Sample Number Sample Description Matrix Sampled Type 8061129-01 Franklin WTP Sludge Lagoon Wastewater 06/21/18 11 50 Grab PO Box 5655 1 Greenville,SC 29606 426 Fan-forest Way : Greenville.SC 29607 1 main 864.232.1556 i fax 864.232.6140 rage rsandcallcott.com an employee-owned company 07/11/2018 07 03 This report may not be reproduced,except in full,without written permission from Rogers&Callcott,Inc Page 2 of 9 4- fit im,- �_1 '1 Rogers &Callcott v ;_- .,,„ ENVIRONMENTAL Environmental Testing Solutions Project: Franklin WTP 351 Depot St. Work Order: 8061129 Asheville,NC 28801-4310 Reported: 07/11/18 07:03 Sample Data Sample Number 8061129-01 Sample Description Franklin WTP Sludge Lagoon collected on 06/21/18 11.50 Reporting Parameter Result Limit Units DF Analyzed Method Flag Analyst Batch General Chemistry Parameters Nitrate-Nitrite as N ND 0.10 mg/L 1.00 07/02/18 11.55 SM 4500NO3H-2011 REN B8G0020 Total Kjeldahl Nitrogen 0.18 0 10 mg/L 1 00 07/05/18 13.19 EPA351 2 SEB B8G0148 Total Nitrogen(TKN+Nitrate+Nitnte) 0.18 0 10 mg/L 1 00 07/05/18 13.19 Calculation SEB B8G0254 Total Metals Aluminum 0.38 0.050 mg/L 1.00 07/06/18 15.57 EPA2007 MEC B8G0073 Arsenic ND 0.010 mg/L 100 06/29/18 15.49 EPA2008 MLR B8F1232 Barium ND 0.010 mg/L 1 00 07/06/18 15.57 EPA 200.7 MEC B8G0073 Calcium 1.5 0.050 mg/L 1.00 07/06/18 15 57 EPA 200.7 MEC B8G0073 Copper ND 0.001 mg/L 1.00 06/29/18 15 49 EPA200.8 MLR B8F1232 Iron ND 0 050 mg/L 1.00 07/06/18 15.57 EPA 200 7 MEC B8G0073 Lead ND 0 005 mg/L 1.00 06/29/18 15:49 EPA 200 8 MLR B8F1232 Magnesium 0.87 0.050 mg/L 1.00 07/06/18 15:57 EPA2007 MEC B8G0073 Manganese 0.089 0.005 mg/L 1.00 06/29/18 15 49 EPA200 8 MLR B8F1232 Total Phosphorus as P ND 0.020 mg/L 1 00 07/06/18 15 57 EPA 200 7 MEC B8G0073 Zinc ND 0 010 mg/L 1 00 06/29/18 15 49 EPA 200 8 MLR B8F1232 PO Box 5655 : Greenville,SC 29606 t 426 Fairforest Way ! Greenville,SC 29607 I main 864.232 1556 ( fax 864.232.6140 rogersandcal lcott.com an employee-owned company 07/11/2018 07 03 This report may not be reproduced,except in full,without wi men permission from Rogers&Callcott,Inc Page 3 of 9 * _ Rogers &Cattcott r 1 p1''�' J-r-i ENVIRONMENTAL �_..-1_7aJ i-�_1 Environmental Testing Solutions Project. Franklin WTP 351 Depot St. Work Order. 8061129 Asheville,NC 28801-4310 Reported: 07/11/18 07:03 General Chemistry Parameters Quality Control Summary Reporting Spike Source %REC RPD Parameter Result Limit Units Level Result %REC Limits RPD Limit Flags Batch B8G0020-General Prep-Wet Chem KL Blank(B8G0020-BLK1) Nitrate-Nitrite as N ND 0 10 mg/L LCS(B8G0020-BS1) Nitrate-Nitrite as N 2 03 0 10 mg/L 2 00 101 85-115 Matrix Spike(B8G0020-MS1) Source:8061129-01 Nitrate-Nitrite as N 1 20 0 10 mg/L 1 25 ND 92 75-125 Matrix Spike Dup(B8G0020-MSD1) Source:8061129-01 Nitrate-Nitrite as N 1 22 0 10 mg/L 1 25 ND 93 75-125 1 20 Batch B8G0148-EPA 351.2-TKN Blank(B8G0148-BLK1) Total Kjeldahl Nitrogen ND 0 10 mg/L LCS(B8G0148-BS1) Total Kjeldahl Nitrogen 2 86 0 10 mgt 3 00 95 90-110 PO Box 5655 1 Greenville.SC 29606 i 426 Fairforesc Way 1 Greenville,SC 29607 ; main 864.232.1556 I fax 864.232.6140 rogersandcallcott.com an employec-ownd company 07/11/1018 07 03 This report may not be reproduced,except in full,without written permission from Rogers&Callcott,Inc Page 4 of 9 itfj� ,_ Rogers &Caltcott k°�;_D-1-�-`l: ENVIRONMENTAL Environmental Testing Solutions Project: Franklin WTP 351 Depot St. Work Order: 8061129 Asheville,NC 28801-4310 Reported: 07/11/18 07:03 Total Metals Quality Control Summary Reporting Spike Source %REC RPD Parameter Result Limit Units Level Result %REC Limits RPD Limit Flags Batch B8F1232-EPA 200.8 Blank(B8F1232-BLK1) Arsenic ND 0 010 mg/L Copper ND 0 001 mg/L Lead ND 0 005 mg/L Manganese ND 0 005 mg/L Zinc ND 0 010 mg/L LCS(B8F1232-BS1) Arsenic 0 203 0 010 mg/L 0 200 101 85-115 Copper 0 196 0 001 mg/L 0.200 98 85-115 Lead 0 191 0 005 mg/L 0 200 95 85-115 Manganese 0 195 0 005 mg/L 0 200 98 85-115 Zinc 0 209 0 010 mg/L 0 200 105 85-115 Batch B8G0073-EPA 200.7 Mod Blank(B8G0073-BLK1) Aluminum ND 0.050 mg/L Barium ND 0 010 mg/L Calcium ND 0.050 mg/L Iron ND 0 050 mg/L Magnesium ND 0 050 mg/L Total Phosphorus as P ND 0 020 mg/L LCS(B8G0073-BS1) Aluminum 0 49 0.050 mg/L 0 500 98 85-115 Barium 0 485 0 010 mg/L 0 500 97 85-115 Calcium 0 49 0 050 mg/L 0 500 99 85-115 Iron 0.490 0 050 mg/L 0 500 98 85-115 Magnesium 0 50 0 050 mg/L 0 500 100 85-115 Total Phosphorus as P 0 503 0 020 mg/L 0 500 101 85-115 PO Box 5655 ' Greenville,SC 29606 1426 Fairforest Way 1 Greenville,SC 29607 1 main 864.232.1556 I fax 864.232.6140 rogersandcallcott.com an employee-owned company 07/11/2018 07 03 This report may not be reproduced,except in full,without written permission f om Rogers&Callcott,Inc Page 5 of 9 - Rogers &Caticott ENVIRONMENTAL. Environmental Testing Solutions Project: Franklin WTP 351 Depot St. Work Order: 8061129 Asheville,NC 28801-4310 Reported: 07/11/18 07:03 Sample Preparation Data Parameter Batch Sample ID Prepared Analyst EPA 200.7 M Digestion EPA 200 7 Mod B8G0073 8061129-01 07/03/2018 10-59 MEC EPA 200.8 Metal Digestion EPA2008 B8F1232 8061129-01 06/29/2018 08:29 MLR PO Box 5655 ' Greenville.SC 29606 ' 426 Fairforest Way Greenville,SC 29607 { main 864.2321556 ' fax 864.232,6140 rogersandcalicott.com an employee-owned company 07/11/2018 07 03 This report may not be reproduced,except in fill,without written permission from Rogers&Callcott,Inc Page 6 of 9 q , Rogers &Cat[c tt a _ _ ENVIRONMENTAL Environmental Testing Solutions Project: Franklin WTP 351 Depot St. Work Order: 8061129 Asheville,NC 28801-4310 Reported: 07/11/18 07:03 Data Qualifiers and Definitions ND Analyte NOT DETECTED at or above the reporting limit NR Not reported RPD Relative Percent Difference PO Box 5655 ' Greenville,SC 29606 ; 426 Fairforest Way Greenville,SC 29607 I main 864.232.1556 1 fax 864.232.6140 rogersandcallcott.com .e..,..�._._..,.,.._.-..m,�,,,_.,.,.Q ..�....y.m� ..._.. a,....,,..�.��._._.�.....�..aw_,�,�,..._......,...., .,.,_..N_. ....m....,......,...._.a.,..._,.......,._.......: .,.. ..._..,...—.....m...._ „ an employee owned company 07/11/2018 07 03 This report may not be reproduced,except in full,without written permission from Rogers&Callcott,Inc Page 7 of 9 ITEM#3 INFORMATION From:Weaver,John<jcweaver@usgs.gov> Sent:Tuesday,June 19,2018 11:46 AM To:John Vilas<john.vilas@mcgillengineers.com> Cc:John C Weaver<jcweaver@usgs.gov> Subject:Response from USGS concerning...Re:[EXTERNAL]zero flow restriction determination Franklin,NC WTP Mr.Vilas, In response to your inquiry about the low-flow characteristics(7010,300,2,average annual discharge)for a location on Cartoogechaye Creek in vicinity of Franklin in Macon County,the following information is provided: A check of the low-flow files here at the USGS South Atlantic Water Science Center(Raleigh office)does not indicate a previous low-flow determination for the point of interest,identified by the lat/long coordinates(35 09 44 N//83 2613 W)you provided via email dated June 12,2018. No USGS discharge records are likewise known to exist for the point of interest. In the absence of site-specific discharge records sufficient for a low-flow analysis,estimates of low-flow characteristics at ungaged locations are determined by assessing a range in the low-flow yields(expressed as flow per square mile drainage area,of cfsm)at nearby sites where such estimates have previously been determined. A basin delineation completed using the online USGS StreamStats application for North Carolina (http://water usgs gov/osw/streamstats/north carohna html)indicates the drainage area for the point of interest(35.16231,-83.43703 NAD83)is 46 sgini. For streams in Macon County,low-flow characteristics published by the USGS are provided in the following reports: (1)The first is a statewide report completed in the early 1990's. It is USGS Water-Supply Paper 2403,"Low-flow characteristics of streams in North Carolina"(Giese and Mason,1993). An online version of the report is available at http//pubs usgs gov/wsp/2403/report pdf The report provides the low-flow characteristics(based on data through 1988)via regional relations and at-site values for sites with drainage basins between 1 and 400 sqmi and not considered or known to be affected by regulation and/or diversions. (2)The second is a statewide report published in March 2015. It is USGS Scientific Investigations Report 2015-5001,"Low-flow characteristics and flow-duration statistics for selected USGS continuous-record streamgaging stations in North Carolina through 2012" (Weaver,2015). The report is available online at http//pubs.usgs gov/sir/2015/5001/. The report provides updated low-flow characteristics and flow-duration statistics for 266 active(as of 2012 water year)and discontinued streamgages across the state where a minimum of 10 climatic years discharge records were available for flow analyses. Inspection of the above reports indicates the presence of eight(8)nearby selected USGS partial-record sites(5)and continuous-record streamgages(3)in general vicinity of the point of interest where low-flow characteristics were published. Among these 8 sites,the low- flow discharge yields for the indicated flow statistics are as follows: Annual 7Q10 low-flow yields==>from 0.37 to 0.83 cfsm(average about 0.52 cfsm,median about 0 44 cfsm) Annual 3002 low-flow yields==>from 0.68 to about 1.4 cfsm(average about 0.95 cfsm,median about 0.86 cfsm) Average annual discharge yields==>from about 2.4 to 3.9 cfsm(average about 3.0 cfsm,median about 2.7 cfsm) Among the three nearby continuous-record streamgages is an active site on Cartoogechaye Creek near Franklin(station id 03500240, drainage area 57.1 sqmi)located downstream from the point of interest and having long-term period of record since June 1961. For the purposes of these flow estimates,it was judged appropriate and reasonable to apply the 71010 and 3002 low-flow yields(0.44 and 0.85 cfsm,respectively)and the average annual discharge yield(2.4 cfsm)from the Cartoogechaye streamgage to compute the low-flow discharges and annual average discharge at the point of interest. Application of these yields to the drainage area(46 sqmi)for the point of interest results in the following estimated discharges: Annual 7Q10.discharge==>20.2 cfs , Annual 3002 discharge==>39.1 cfs Average annual discharge==>110 cfs Please note the estimated flows are provided in units of cubic feet per second(cfs). Please understand the information provided in this message is based on a preliminary assessment and considered provisional,subject to revision pending further analyses. Hope this information is helpful. Thank you. Curtis Weaver 5. Curtis Weaver, Hydrologist, PE Email:icweaver(alusas.aov USGS South Atlantic Water Science Center Online:https://www.usas.aov/centers/sa-water North Carolina-South Carolina-Georgia 3916 Sunset Ridge Road Raleigh,NC 27607 Phone:(919)571-4043 // Fax:(919)571-4041 ITEM#4 INFORMATION July 5, 2018 Ms. Brianna Young Environmental Senior Specialist Department of Environmental Quality Division of Water Resources Compliance and Expedited Permitting Unit 1617 Mail Service Center Raleigh,North Carolina 27699-1617 RE: Water Treatment Plant Upgrade Town of Franklin NPDES Application Permit#NC0089737 Macon County Dear Ms.Young: The Town of Franklin has had discussions with our consultant, McGill Associates, concerning the acceptance of wastewater generated from the town's water treatment plant(WTP) at the town's wastewater treatment plant(WWTP) as an alternative for the treatment and disposal of wastewater from the WTP. The Town of Franklin WWTP has a design capacity of 1.65 MGD. Like many towns we continue to have challenges with our sewer collection system to reduce inflow and infiltration(UI) into the system. These higher flows during or immediately following,rainfall events presents challenges to the town to adequately treat the wastewater collected at the existing WWTP. The section of the town's wastewater collection system located relatively close to the WTP is undersized and inadequate to accept the amount of flow projected from the WTP. Major improvements will be required to the sewer collection system to accept flow from the WTP. With the limited capacity of the town's WWTP and the undersized wastewater collection system near the WTP the Town of Franklin will not accept the wastewater generated from the water treatment plant at the town's WWTP. Acceptance of this flow will require investment of capital funds to make improvements to the town's wastewater collection and treatment system and will result in increased annual operational cost to the town. Should you have any questions please let me know. Sincerely, Town of Franklin. Nathanael Moore, P.E. Town Engineer CC: Summer Woodard—Franklin Rob Hartsell—Franklin M.Keith Webb,PE—McGill Associates