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HomeMy WebLinkAboutNC0087602_Return_20020416NPDES DOCUMENT SCANNING COVER SHEET NPDES Permit: NC0087602 Whittier WWTP Document Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) Permit Modification Complete File - Historical Engineering Alternatives (EAA) Correspondence Owner Name Change i .Return Instream Assessment (67b) Speculative Limits Environmental Assessment (EA) Document Date: April 16, 2002 This document is pririted on reuse paper - ignore a rty coiiterit on the resrerse side 4 Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Gregory J. Thorpe, Ph.D. Acting Director April 16, 2002 Mr. George Rogers P.O. Box 368 Whittier, North Carolina 27511 Subject: Engineering Alternative Analysis Return Whittier Sanitary District NPDES Permit NC0087602 Dear Mr. Rogers: The Engineering Alternatives Analysis submitted for the proposed Whittier Sanitary District Wastewater Treatment Plant is being returned by the Division because it lacks required components. The following is a list of information and questions that were raised during the EAA review: • The Engineering Alternatives Analysis report states that the two existing treatment systems permitted under NC0000264 and NC0074250 will be eliminated with the construction of one centralized WWTP. Documentation is needed from the owners of these wastewater treatment systems confirming the intention to connect to the proposed WWTP and close the existing systems. • All new facilities are required to provide a soil analysis, characterization and loading recommendations developed by a licensed soil scientist. The soil was not identified and the assumption of the application rate of 0.05 GPD/SF was not explained. • The projected population growth for 2023 was based on a 3% growth rate. The actual growth rate based on the Census is 1.1 %. Why is the 3.3 % an appropriate growth rate and the how are the expected flows projections attainable? • The EAA report mentions that several septic systems are failing or have the possibility of failing in the future. It also mentions that funds from the North Carolina Rural Economic Development have been obtained for a project, but there is no information or description of the project. Is this project providing funds to repair the septic systems? • The report should contain a scaled map showing the necessary improvements and new facilities required for the connection to the Town of Bryson City. Has the Whittier Sanitary District approached the Town of Bryson City regarding regionalization and expected user fees? Provide documentation from the Town of Bryson City agreeing to the possibility or the denial of this alternative. • A description and diagram of the proposed treatment system including disinfection were not included. • On the cost estimate for the drip and spray irrigation systems a description is needed of the components under drip and spray irrigation systems and the itemized cost. 1617 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1617 - TELEPHONE 919-733-5083/FAX 919-733-0719 AN EQUAL OPPORTUNITY AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/ 10% POST -CONSUMER PAPER VISIT US ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES Whittier Sanitary District Permit No. NC0087602 Page 2 If you wish to resubmit the application this additional information must be included in the application package. If you have any questions, please call me at (919) 733-5083, extension 595. Sincerely, 7/7,;(,, P4d/L--. David A. Goodrich NPDES Unit Supervisor cc: NPDES Unit. Central Files Asheville Regional Office Randal Hintz, P.E. — McGill Associates P.O. Box 2259 Asheville, NC 28802 wA rF Michael F. Easley, Governor William G. Ross Jr., Secretary r _ ` y North Carolina Department of Environment and Natural Resources Gregory J. Thorpe, Ph.D. Acting Director Division of Water Quality September 19, 2001 George Rogers, Chairman Whittier Sanitary District P.O. Box 850 Bryson City, North Carolina 28713 Subject: Speculative Limits Request Whittier Sanitary District Jackson County Dear Mr. Rogers: This letter is in response to your request for speculative effluent limits for a proposed discharge to the Tuckasegee River at the location of the existing discharge for the Jackson County Industrial Wastewater Treatment Facility. The Whittier Sanitary District is proposing to eliminate the waste treatment plants under permits NC0000264 and NCO074250 and build a new treatment plant with a capacity of 0.250 MGD. The permitted capacity for each existing plant is 0.005 MGD. A flow justification for the 0.250 MGD shall be submitted with the Engineering Alternatives Analysis (EAA) when applying for the permit (guidance is attached). The speculative limits were developed based on our understanding of the proposal in addition to our understanding of present environmental conditions at the proposed discharge location. The Division of Water Quality (Division) can not guarantee that an NPDES permit will be issued at the proposed location. Final decisions can only be made after the Division receives and evaluates a formal permit application for the proposed discharge and after the public has an opportunity to comment on the project. Speculative Effluent Limits The low flow data used for the development of the limits was the following: Average flow 940 cfs Summer 7Q 10 '- 212.9 cfs Winter 7Q1O 254.7 cfs Annual 30Q2 380.8 cfs Based on the available information, tentative limits for the proposed discharge to the Tuckasegee River near Whittier at a flow of 0.25 MGD are attached. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone (919) 733-5083 FAX (919) 733-0719 An Equal Opportunity Affirmative Action Employer Visit us on the INTERNET CO www.enr.state.nc.us The explanation for the effluent monitoring requirements follows: BOD5 and Total Suspended Solids (TSS) and Fecal Coliform - The BOD5 and TSS limits are standard for secondary treatment of municipal wastewater. Fecal Coliform, pH - The limits for fecal coliform bacteria and pH represent water quality standards for Class B waters (T15A NCAC 2B .0219). Total Residual Chlorine (TRC) — A limit is required for all new treatment plants using chlorine for effluent disinfection. NHS as N, Total Nitrogen and Total Phosphorus - Monitoring for these parameters is required to evaluate and protect water quality in the receiving stream. Please be advised that the limits and monitoring frequencies on the attached pages were based on the information presented in the speculative limits request. In addition, it was assumed that the proposed WWTP will be a Class II facility. This assumption was used to develop an estimate of the monitoring frequencies that would be required for each parameter. A complete evaluation of these limits and monitoring frequencies in addition to monitoring requirements for metals and other toxicants will be addressed upon receipt of a formal NPDES permit application. By copy of this letter the Division is communicating to the US Fish and Wildlife Service and the North Carolina Wildlife Resources Commission the intent of Whittier Sanitary District to expand the discharge to the Tuckasegee River. Should you have any questions or if you need any additional information, please feel free to contact Teresa Rodriguez (919) 733-5083, extension 595. Enclosure cc: Central Files Asheville Regional Office NPDES Unit USFWS, Tom Augspurger NCWRC, Owen Anderson Sincerely, David A Goodrich NPDES Unit Supervisor — P.O. Box 33726 Raleigh, North Carolina 27636-3726 — 20830 Great Smokey Mountains Expressway Waynesville, North Carolina 28786 A. (1) SPECULATIVE LIMITATIONS AND MONITORING REQUIREMENTS The following table presents speculative limits and associated monitoring requirements for the proposed WWTP for Whittier Sanitary District. Preparation of these limits does not guarantee that the Division will issue a NPDES permit. In addition, it does not guarantee that these limits will remain unchanged if a permit is issued to Whittier Sanitary District. A complete evaluation of these limits and monitoring frequencies in addition to monitoring requirements for metals and other toxicants will be addressed upon receipt of a formal NPDES permit application. During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall(s) serial number 001. Such discharges shall be limited and monitored by the Permittee as specified below: EFFLUENT CHARACTERISTICS _ _ ; _LIMITS = MONITORING _ REQUIREMENTS Monthly _ _ _A1 er"age - Weekly : Average : =' Daily _Maximum :.._Frequency... .Saneple _ Type. Sample .Location' _ -_Measurement _ Flow 0.250 MGD Continuous Recording I or E BOD, 5-day, 20°C 2 30.0 mg/1 45.0 mg/1 Weekly Composite .\"`,0\ .'- Total Suspended Residue2 p 30.0 mg/1 45.0 mg/1 Weekly Composite r , `' ,..., • 4 ,, < `., pH3 Weekly i rice r"'.,`,�' ,.� -,s \\ Fecal Coliform (geometric mean) 200/100 ml 400/100 ml Weekly Grab \\ `\ f.- _ \ \\, \,\`, W+ `,�\ , \ \ \ \ , Total Residual Chlorine4 28 1 µg / Monthl. ••--� \ ..� Y: • ` 't ab `\ `\ , f E ` \� \\-= E , NH3 as N <\` \ ?r/MQkitlx \ ��\�� \ ih o ite`l , 4� p 1 E Total Nitrogen (NO2+NO3+TKN) _ \\ \` \ \2./yew,'\ (pfliposite E Total Phosphorus c"\" , > ,----• r \% ‘, ;\\\ 4Jyear \;,,.= S11 posite E Notes: \• \ t\\ \ \\ 1 • Sample locations E - Effluent, I ; f ue l;, U - Upstre�an ;,D" — Downstream. Instream monitoring requirements to be detern*ed, uOn appiicatjb i.receipt: 2. The monthly average effl\uebt B905\ancl\XbtaI Suspended Residue concentrations shall not exceed 85% of the respective influent,value,(0% removal required). 3. The pH-sk al1,n' t be,:le s--tti�- 6 0 standard units nor greater than 9.0 standard units. 4. Monitori'ngyequirement applies only if chlorine is used for disinfection. There shall be no discharge of floating solids or visible foam in other than trace amounts. Whittier Sanitary District Speculative Limits Notes NPDES permit num: NC0000264 and NC0074250 Owner: Mr. George Rogers Whittier Sanitary District P.O. Box 850 Bryson City Jackson County Requested by: McGill & Asscoiates P.O. Box 2259 Asheville, NC 28802 Summary: The Whittier Sanitary District requested speculative limits for a proposed discharge. This new WWTP would replace the two wastewater treatment systems permitted under NC0000264 and NC0074250. Actual flow: 0.005 MGD each (total combined flow is 0.010 MGD) Proposed Flow: 0.250 MGD Stream Information: River Basin: Little Tennessee Average flow: 940 cfs . Stream: Tuckasegge River Summer 7Q10: 212.9 cfs Sub -basin: 04-04-02 Winter 7Q10: 254.7 cfs Classification: B Annual 30Q2: 380.8 cfs Basin Plan: The Tuckasegee River in Jackson County is rated as excellent for taxa richness values and bioclassifications. Proposed limits: Limits are effluent limited. A Level B model was developed, secondary limits will protect for summer and winter conditions. Parameter Monthly Average Weekly Average Daily Maximum Flow 0.25 MGD BODS 30 mg/1 45mg/1 TSS 30 mg/1 45mg/1 pH 6-9 TRC 28 Ag/I Fecal Coliform 200 /100 ml 400/100 ml NH3 as N Monitor only Total Phosphorus Total Nitrogen Regional Office correspondence: ARO recommends coliform limits. The ARO performed an inspection on March 2001 at the Jackson County Development Corp. facility (NC0000264). The inspection report indicates operational and compliance problems. SUMMER Discharger : WITTIER Receiving Stream : TUSCKEEGEE MODEL RESULTS The End D.O. is 7.13 mg/l. The End CBOD is 2.06 mg/l. The End NBOD is 1.14 mg/1. WLA WLA WLA DO Min CBOD NBOD DO Waste Flow (mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd) Segment 1 7.04 0.00 1 Reach 1 45.00 90.00 0.00 0.25000 *** MODEL SUMMARY DATA *** Discharger Receiving Stream . Summer 7Q10 Design Temperature: WITTIER TUSCKEEGEE 212.9 28.0 LENGTH SLOPE VELOCITY mile ft/mi fps Subbasin Stream Class: B Winter 7Q10 : 254.0 DEPTH Kd Kd Ka Ka KN ft design @20° design @20° design Segment 1 Reach 1 0.40 6.40 1.103 3.64 0.37 0.25 7.39 6.21 0.56 Flow cfs Segment 1 Reach 1 Waste Headwaters Tributary * Runoff 0.388 219.000 0.000 0.000 CBOD NBOD D.O. mg/1 mg/1 mg/1 45.000 90.000 0.000 2.000 1.000 7.050 2.000 1.000 7.050 2.000 1.000 7.050 * Runoff flow is in cfs/mile I Seg # I Reach # ( Seg Mi I D.O. CBOD I NBOD I Flow I 1 1 0.00 7.04 2.08 1.16 219.39 1 1 0.04 7.05 2.07 1.16 219.39 1 1 0.08 7.06 2.07 1.15 219.39 1 1 0.12 7.07 2.07 1.15 219.39 1 1 0.16 7.08 2.07 1.15 219.39 1 1 0.20 7.09 2.07 1.15 219.39 1 1 0.24 7.09 2.07 1.15 219.39 1 1 0.28 7.10 2.06 1.15 219.39 1 1 0.32 7.11 2.06 1.15 219.39 1 1 0.36 7.12 2.06 1.14 219.39 1 1 0.40 7.13 2.06 1.14 219.39 Seg # I Reach # I Seg Mi 1 D.O. I CBOD I NBOD I Flow I IWC Calculations Owner Whittier Sanitary District Facility Proposed WWTP Prepared By: Teresa Rodriguez, NPDES Unit Enter Design Flow (MGD): Enter s7Q10(cfs): Enter w7Q10 (cfs): 0.25 212.9 254.7 Residual Chlorine 7Q10 (CFS) DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (UG/L) UPS BACKGROUND LEVEL (1 IWC (%) Allowable Conc. (ug/I) Fecal Limit (If DF >331; Monitor) (If DF <331; Limit) Dilution Factor (DF) NPDES Servor/Current Versions/IWC 212.9 0.25 0.3875 17.0 0 0.18 9357 Ammonia (NH3 as N) (summer) 7Q10 (CFS) DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (MG/L) UPS BACKGROUND LEVEL IWC (%) Allowable Conc. (mg/I) Ammonia (NH3 as N) (winter) 7Q10 (CFS) Not Required DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (MG/L) 550.42 UPS BACKGROUND LEVEL IWC (%) Allowable Conc. (mg/I) 212.9 0.25 0.3875 1.0 0.22 0.18 429.5 254.7 0.25 0.3875 1.8 0.22 0.15 1040.3 11/14/01 LEVEL B MODEL INFORMATION Facility Information Facility Name Whittier Sanitary District NPDES No. Type of wastewater Domestic/Industrial Facility status New Receiving stream Tuckasegee (Little Tennessee River basin) Stream classification B Subbasin 40402 County Jackson Regional Office Asheville Topo Quad F5NE (Whittier) Flow Informaiton USGS # 351060200 Date of flow estimate Drainage Area (m12) 376 Summer7Q10 (cfs) 212.9 Winter7Q10 (cfs) 254.7 Average flow (cfs) 940 30Q2 (cfs) 380.8 !WC at discharge (%) 0.18 Cummulative IWC (%) Model Input Information Reach 1 Length of reach (mi) 0.4 Incremental length 0.04 Waste characteristics Flow (MGD) 0.25 CBOD (mg/0 60 NBOD (mg/I) 90 DO (mg/0 Runoff charactericstics s7Q10 (cfs/mi) 0 QA (cfs/mi) 0 CBOD (mg/!) NBOD (mg/I) DO (mg/l) Tributary characteristics s7Q 10 (cfs/mi) QA (cfs/mi) CBOD (mg/I) NBOD (mg/I) DO (mg/I) Slope (ft/mi) 6.4 File name: Whittier LEVEL B MODEL INFORMATION /). Facility Information v Facility Name , Whittier Sanitary District NPDES No. Type of wastewater Domestic/Industrial Facility status New Receiving stream Tuckasegee (Little Tennessee River basin) Stream classification B — 7 1� Subbasin0402----"" County Jackson Regional Office Asheville Topo Quad F5NE (Whittier) Flow Informaiton USGS # 351060200 Date of flow estimate Drainage Area (mil) 376 Summer7Q 10 (cfs) 212.9 Winter7Q10 (cfs) 254.7 Average flow (cfs) 940 30Q2 (cfs) 380.8 IWC at discharge (%) 0.18 Cummulative 1WC (%) Model Input Information Reach 1 Length of reach (mi) 0.4 Incremental length 0.04 Waste characteristics Flow (MGD) 0.25 CBOD (mg/I) 60 NBOD (mg/I) 90 DO (mg/I) ; 6, Runoff charactericstics �--� s7Q 10 (cfs/mi) 0 QA (cfs/mi) 0 CBOD (mg/1) NBOD (mg/I) DO (mg/I) Tributary characteristics s7Q 10 (cfs/mi) - QA (cfs/mi) CBOD (mg/1) NBOD (mg/I) DO (mg/!) Slope (ft/mi) 6.4 File name: Whittier Discharger Receiving Stream : Summer 7Q10 Design Temperature: *** MODEL SUMMARY DATA *** WITTIER TUSCKEEGEE 212.9 28.0 frcfX6Qc1C1OCLat3 Subbasin : Stream Class: B-T!) Winter 7Q10 : 254.0 LENGTH SLOPE VELOCITY DEPTH Kd Kd Ka Ka KN mile ft/mi fps ft design @20° design @20° design Segment 1 Reach 1 0.40 6.40 1.103 3.64 0.37 0.25 7.39 6.21 0.56 Flow cfs Segment 1 Reach 1 Waste Headwaters Tributary * Runoff 0.388 219.000 0.000 0.000 CBOD NBOD D.O. mg/1 mg/1 mg/1 45.000 90.000 0.000 2.000 1.000 7.050 2.000 1.000 7.050 2.000 1.000 7.050 * Runoff flow is in cfs/mile SUMMER Discharger : WITTIER Receiving Stream : TUSCKEEGEE MODEL RESULTS The End D.O. is 7.13 mg/1. The End CBOD is 2.06 mg/l. The End NBOD is 1.14 mg/l. WLA WLA WLA DO Min CBOD NBOD DO Waste Flow (mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd) Segment 1 7.04 0.00 1 Reach 1 45.00 90.00 0.00 0.25000 SUMMER Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD 1 1 0.00 7.04 2.08 1.16 1 1 0.04 7.05 2.07 1.16 1 1 0.08 7.06 2.07 1.15 1 1 0.12 7.07 2.07 1.15 1 1 0.16 7.08 2.07 1.15 1 1 0.20 7.09 2.07 1.15 1 1 0.24 7.09 2.07 1.15 1 1 0.28 7.10 2.06 1.15 1 1 0.32 7.11 2.06 1.15 1 1 0.36 7.12 2.06 1.14 1 1 0.40 7.13 2.06 1.14 Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD Flow I 219.39 219.39 219.39 219.39 219.39 219.39 219.39 219.39 219.39 219.39 219.39 Flow I �O r`CR f(/COQ i� (04 Michael F. Easley, Govemor Q William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Gregory J. Thorpe, Ph.D. Acting Director "' Division of Water Quality September 27, 2001 Mr. Michael Bolt, Chair Water Quality Monitoring Watershed Association of the Tuckasegee River PO Box 320 Whittier, NC 28789 Dear Mr. Bolt: • I am writing in response to your correspondence dated May 23, 2001, addressed to Mr. Forrest Westall, and copied to me regarding the proposed wastewater treatment plant on the Tuckasegee River. I have discussed its contents with Teresa Rodriguez of the Division of Water Quality (DWQ) Central Office NPDES Unit and Kevin Barnett of the DWQ Asheville Regional Office. Ms. Rodriguez informed me that speculative permit limits have been requested for a proposed discharge to the Tuckasegee River at the location of the existing discharge for the Jackson County Industrial Wastewater Treatment Facility. The Whittier Sanitary District is proposing to eliminate the waste treatment plants under permits NC0000264 and NC0074250 (0.005 MGD each) and build a new treatment plant with a capacity of 0.250 MGD. The request from the Watershed Association for the Tuckasegee River for reclassification of this portion of the Tuckasegee River from Class C to Class B Tr has been received (along with a similar request from the Tuckaseigee Chapter of Trout Unlimited) and is currently being processed by DWQ. Your concerns have been discussed with both Ms. Rodriguez and Mr. Barnett and both are aware of the intent to pursue reclassification. A copy of your correspondence and the request for reclassification have been placed in the NPDES permit file for this proposed project and will be considered when an application for this proposed facility is reviewed by DWQ. Thank you for your concern about water quality in the Tuckasegee River watershed. Sincerely, Callie L. Dobson Little Tennessee River Basin Planner CC: Forest Westall, DWQ ARO David Goodrich, DWQ NPDES Boyd Devane, DWQ Planning • N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 (919) 733-7015 Customer Service 1 800 623-7748 Watershed Association of the Tuckasegee River May 23, 2001 Mr. Forrest Westall Michael Bolt N.C. DWQ Regional Supervisor P.O. Box 320 59 Woodfin Place Whittier Asheville, N.C. 28801 N.C. 28789 Dear Mr. Westall, Yesterday evening I attended a public meeting in Whittier, N.C., regarding the proposed construction of a .25 mgd wastewater treatment plant there on the Tuckasegee River. The contract engineers, McGill and Associates outlined their plans for the project and stated that they had applied to NCDWQ's David Goodrich for speculative NPDES permit limits. Their design for the plant will include disinfection by chlorination. This section of the river has greatly improved in water quality and has been identified as habitat for the endangered Appalachian Elktoe Mussel. The Watershed Association of the Tuckasegee River has been in discussion with Callie Dobson, N.C. DWQ Little Tennessee River Basin Planner about having it reclassified from class 'C' to class `B' Trout waters. We would prefer that the proposed plant use ultra violet disinfection and we would like to see low limits set for NPDES permit parameters such as BOD, TSS, NH3, TRC etc., combined with quarterly toxicity testing which would be appropriate for a class `B' trout receiving stream. I would be most grateful for your attention to this matter prior to the issuance of speculative NPDES permit limits. Sincerely, 8..4_ Michael Bolt Chair, Water Quality Monitoring, WATR Enclosures cc: Callie Dobson, NCDWQ Kevin Barnett, NCDWQ David Wheeler, President WATR Robert Ferguson, Secretary WATR Mark Cantrell, USFWS Ms.Callie Dobson Basin Planner N.C. Dept. of the Environment and Natural Resources Division of Water Quality 1617 Mail Service Center Raleigh, N.C. 27899 Dear Ms. Dobson, The Tuckaseigee Chapter of Trout Unlimited would like to request a reclassification of the Tuckaseigee River from a Class C Water to a Class B Trout Water. Thank you for your consideration. If you have any questions, or if we can help with this process in any way, please let me know. My phone number is (828) 586-2942 and my e-mail address is jcmkdeweese@aoLcain. Sincerely, Jerry DeWeese President, Tuckaseigee Chapter Trout Unlimited W A T Michael F. Easley, Governor Q William G. Ross Jr., Secretary 0 7 North Carolina Department of Environment and Natural Resources r —I Gregory J. Thorpe, Ph.D. 0 Acting Director Division of Water Quality George Rogers, Chairman Whittier Sanitary District P.O. Box 850 Bryson City, North Carolina 28713 September 19, 2001 Subject: Speculative Limits Request Whittier Sanitary District Jackson County Dear Mr. Rogers: This letter is in response to your request for speculative effluent limits for a proposed discharge to the Tuckasegee River at the location of the existing discharge for the Jackson County Industrial Wastewater Treatment Facility. The Whittier Sanitary District is proposing to eliminate the waste treatment plants under permits NC0000264 and NC0074250 and build a new treatment plant with a capacity of 0.250 MGD. The permitted capacity for each existing plant is 0.005 MGD. A flow justification for the 0.250 MGD shall be submitted with the Engineering Alternatives Analysis (EAA) when applying for the permit (guidance is attached). The speculative limits were developed based on our understanding of the proposal in addition to our understanding of present environmental conditions at the proposed discharge location. The Division of Water Quality (Division) can not guarantee that an NPDES permit will be issued at the proposed location. Final decisions can only be made after the Division receives and evaluates a formal permit application for the proposed discharge and after the public has an opportunity to comment on the project. Speculative Effluent Limits The low flow data used for the development of the limits was the following: Average flow 940 cfs Summer 7Q10 212.9 cfs Winter 7Q10 254.7 cfs Annual 30Q2 380.8 cfs Based on the available information, tentative limits for the proposed discharge to the Tuckasegee River near Whittier at a flow of 0.25 MGD are attached. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone (919) 733-5083 FAX (919) 733-0719 An Equal Opportunity Affirmative Action Employer Visit us on the INTERNET @ www.enr.state.nc.us The explanation for the effluent monitoring requirements follows: BOD5 and Total Suspended Solids (TSS) and Fecal Coliform - The BOD5 and TSS limits are standard for secondary treatment of municipal wastewater. Fecal Coliform, pH - The limits for fecal coliform bacteria and pH represent water quality standards for Class B waters (T15A NCAC 2B .0219). Total Residual Chlorine (TRC) — A limit is required for all new treatment plants using chlorine for effluent disinfection. NH3 as N, Total Nitrogen and Total Phosphorus - Monitoring for these parameters is required to evaluate and protect water quality in the receiving stream. Please be advised that the limits and monitoring frequencies on the attached pages were based on the information presented in the speculative limits request. In addition, it was assumed that the proposed WWTP will be a Class II facility. This assumption was used to develop an estimate of the monitoring frequencies that would be required for each parameter. A complete evaluation of these limits and monitoring frequencies in addition to monitoring requirements for metals and other toxicants will be addressed upon receipt of a formal NPDES permit application. By copy of this letter the Division is communicating to the US Fish and Wildlife Service and the North Carolina Wildlife Resources Commission the intent of Whittier Sanitary District to expand the discharge to the Tuckasegee River. Should you have any questions or if you need any additional information, please feel free to contact Teresa Rodriguez (919) 733-5083, extension 595. Enclosure cc: Central Files Asheville Regional Office NPDES Unit USFWS, Tom Augspurger NCWRC, Owen Anderson — Sincerely, -'6, /lbw i David A Goodrich NPDES Unit Supervisor — P.O. Box 33726 Raleigh, North Carolina 27636-3726 20830 Great Smokey Mountains Expressway Waynesville, North Carolina 28786 A. (1) SPECULATIVE LIMITATIONS AND MONITORING REQUIREMENTS The following table presents speculative limits and associated monitoring requirements for the proposed WWTP for Whittier Sanitary District. Preparation of these limits does not guarantee that the Division will issue a NPDES permit. In addition, it does not guarantee that these limits will remain unchanged if a permit is issued to Whittier Sanitary District. A complete evaluation of these limits and monitoring frequencies in addition to monitoring requirements for metals and other toxicants will be addressed upon receipt of a formal NPDES permit application. During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall(s) serial number 001. Such discharges shall be limited and monitored by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Frequency Sample Type Sample Location' Flow 0.250 MGD Continuous Recording I or E BOD, 5-day, 20°C 2 30.0 mg/1 45.0 mg/1 Weekly Composite -,-',E,1. Total Suspended Residue2 30.0 mg/1 45.0 mg/1 Weekly Composite , ...4;1. �. ' , pHs Weekly Ckrab %' .� • , • E` . ', ',, Fecal Coliform (geometric mean) 200/100 mi 400/100 ml Weekly Grab• • ', • ••\", '. E •s `, '\ • Total Residual Chlorine4 28 µg/1 Monthly ^.` , , •,• •:Grab ', •s ,, '• s.' E NH3 as N •; .', 2/MQnth '\ •., Composite ` E Total Nitrogen (NO2+NO3+TKN) ‘• '- ,2/year. '•` • Composite E Total Phosphorus , , - , �, .; �2/year ' `Composite E Notes: 1. Sample locations E - Effluent, I Influent, I —Upstream,:D — Downstream. Instream monitoring requirements to be determined upon •application receipt. 2. The monthly average effluent BOD5•and Total Suspended Residue concentrations shall not exceed 85% of the respective influentvalue (85a10 removal required). 3. The pH shall not be less -than 6.0 standard units nor greater than 9.0 standard units. 4. Monitoring requirement applies only if chlorine is used for disinfection. There shall be no discharge of floating solids or visible foam in other than trace amounts. a Whittier Sanitary District Speculative Limits Notes NPDES permit num: NC0000264 and NC0074250 Owner: Mr. George Rogers Whittier Sanitary District P.O. Box 850 Bryson City Jackson County Requested by: McGill & Asscoiates P.O. Box 2259 Asheville, NC 28802 Summary: The Whittier Sanitary District requested speculative limits for a proposed discharge. This new WWTP would replace the two wastewater treatment systems permitted under NC0000264 and NC0074250. Actual flow: 0.005 MGD each (total combined flow is 0.010 MGD) Proposed Flow: 0.250 MGD Stream Information: River Basin: Little Tennessee Average flow: 940 cfs Stream: Tuckasegge River Summer 7Q10: 212.9 cfs Sub -basin: 04-04-02 Winter 7Q10: 254.7 cfs Classification: B Annual 30Q2: 380.8 cfs Basin Plan: The Tuckasegee River in Jackson County is rated as excellent for taxa richness values and bioclassifications. Proposed limits: Limits are effluent limited. A Level B model was developed, secondary limits will protect for summer and winter conditions. Parameter Monthly Average Weekly Average Daily Maximum Flow 0.25 MGD BOD5 30 mg/1 45mg/1 TSS 30 mg/1 45mg/1 pH 6-9 TRC 28 µg/1 Fecal Coliform 200 /100 ml 400/100 ml NH3 as N Monitor only Total Phosphorus Total Nitrogen Regional Office correspondence: ARO recommends coliform limits. The ARO performed an inspection on March 2001 at the Jackson County Development Corp. facility (NC0000264). The inspection report indicates operational and compliance problems. Whittier Spec Limits Notes 08/21/01 Page 1 of 1 Teresa Rodriguez LEVEL B MODEL INFORMATION Facility Information Facility Name Whittier Sanitary District NPDES No. Type of wastewater Domestic/Industrial Facility status New Receiving stream Tuckasegee (Little Tennessee River basin) Stream classification B Subbasin 40402 County Jackson Regional Office Asheville Topo Quad F5NE (Whittier) Flow Informaiton USGS # 351060200 Date of flow estimate Drainage Area (mil) 376 Summer7Q10.(cfs) 212.9 Winter7Q10 (cfs) 254.7 Average flow (cfs) 940 30Q2 (cfs) 380.8 !WC at discharge (%) _ __ 0.18 Cummulative IWC (%) Model Input Information Reach 1 Length of reach (mi) 0.4 Incremental length 0.04 Waste characteristics Flow (MGD) 0.25 CBOD (mg/I) 60 NBOD (mg/I) 90 DO (mg/I) Runoff charactericstics s7Q 10 (cfs/mi) 0 QA (cfs/mi) 0 CBOD (mg/l) NBOD (mg/I) DO (mg/I) Tributary characteristics s7Q10 (cfs/mi) QA (cfs/mi) CBOD (mg/I) NBOD (mg/I) DO (mg/I) Slope (ft/mi) 6.4 File name: Whittier SUMMER Discharger : WITTIER Receiving Stream : TUSCKEEGEE MODEL RESULTS The End D.O. is 7.13 mg/1. The End CBOD is 2.06 mg/l. The End NBOD is 1.14 mg/1. WLA WLA WLA DO Min CBOD NBOD DO Waste Flow (mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd) Segment 1 7.04 0.00 1 Reach 1 45.00 90.00 0.00 0.25000 SUMMER Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I 1 1 0.00 7.04 2.08 1.16 219.39 1 1 0.04 7.05 2.07 1.16 219.39 1 1 0.08 7.06 2.07 1.15 219.39 1 1 0.12 7.07 2.07 1.15 219.39 1 1 0.16 7.08 2.07 1.15 219.39 1 1 0.20 7.09 2.07 1.15 219.39 1 1 0.24 7.09 2.07 1.15 219.39 1 1 0.28 7.10 2.06 1.15 219.39 1 1 0.32 7.11 2.06 1.15 219.39 1 1 0.36 7.12 2.06 1.14 219.39 1 1 0.40 7.13 2.06 1.14 219.39 I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow *** MODEL SUMMARY DATA *** Discharger : WITTIER Subbasin .• Receiving Stream : TUSCKEEGEE Stream Class: .,8 Summer 7Q10 : 212.9 Winter 7Q10 : 254.0 Design Temperature: 28.0 LENGTH SLOPE VELOCITY DEPTH Kd Kd Ka Ka KN mile ft/mi fps ft design @20° design @20° design Segment 1 Reach 1 0.40 6.40 1.103 3.64 0.37 0.25 7.39 6.21 0.56 Flow cfs Segment 1 Reach 1 Waste Headwaters Tributary * Runoff 0.388 219.000 0.000 0.000 CBOD NBOD D.O. mg/1 mg/1 mg/1 45.000 90.000 0.000 2.000 1.000 7.050 2.000 1.000 7.050 2.000 1.000 7.050 * Runoff flow is in cfs/mile Zc�1u G�c �c c5on C/ c, ;? &t,c t - /P%'ory o so d ,2 5 At/ G(i.s chter 2GccRaour Cv-katter 4,60), Au„, T Yiscikar, S - 0-fr / -.�' t— c2. -- - cry, --f_. z �Rur' 2 iO `gyj s1 q to = 5. q 2 as (5)(\ w 7Q 10= 1 cf s 3a9a • !Llolcf7 (0s3 s roc, ! 000) Dis dwelt 'DA 37(0, rni 2 q = 910els 37Q ro = .2/Q. 9 cis w?(Pro 3 a5i.7 c<s 30R a - 3 f(D . F -�: --- Facility: NPDES#: Receiving Stream: Comment(s): Low Flow Record Station Number: Hydrologic Area Number: Drainage Area Low Flow Record Station: Qave Low Flow Record Station: s7Q10 Low Flow Record Station: w7Q10 Low Flow Record Station: 30Q2 Low Flow Record Station: Drainage Area New Site: MAR New Site: Qave per Report Equation: s7Q10 per Report Equation: w7Q10 per Report Equation: 30Q2 per Report Equation: tuckagee river gage number not available 03.5110.5000 HA10 347 763.40 cfs 198.00 cfs 236.00 cfs 353.00 cfs must be < 400 sq. miles 376 2.5 Drainage Area Ratio: [ new DA / Da at gage Weighted Ratio: Over -ride Inappropriate Site (y ): 940 cfs 156.02 cfs 221.21 cfs 323.36 cfs Continue 1.08 : 1 Continue 0.97 : 1 Drainage Area New Site: MAR New Site: Weighted Qave per Report Equation: Weighted s7Q10 per Report Equation: Weighted w7Q10 per Report Equation: Weighted 30Q2 per Report Equation: II 376 2.5 940 cfs 212.92 cfs 254.76 cfs 380.85 cfs Facility: NPDES#: Receiving Stream: tuckagee river Comment(s): gage number not available Low Flow Record Station Number. Hydrologic Area Number Drainage Area Low Flow Record Station: Qave Low Flow Record Station: s7Q1 0 Low Flow Record Station: w7Q10 Low Flow Record Station: 3002 Low Flow Record Station: Drainage Area New Site: MAR New Site: Qave per Report Equation: s7Q10 per Report Equation: w7Q10 per Report Equation: 30Q2 per Report Equation: 03.5110.5000 HA10 347 763.40 cfs 198.00 cfs 236.00 cfs 353.00 cfs must be < 400 sq. miles 400 2.5 1000 cfs 166.09 cfs 235.18 cfs 344.00 cfs Continue Drainage Area Ratio: 1.15 : 1 [ new DA / Da at gage Continue Weighted Ratio: 0.95 :1 Over -ride Inappropriate Site (y ): Drainage Area New Site: 400 MAR New Site: 2.5 Weighted Qave per Report Equation: 1000 cfs Weighted s7Q10 per Report Equation: 225.08 cfs Weighted w7Q10 per Report Equation: 270.17 cfs Weighted 30Q2 per Report Equation: 403.71 cfs C� eo n Lei C Facility: NPDES#: Receiving Stream: Comment(s): Low Flow Record Station Number: Hydrologic Area Number: Drainage Area Low Flow Record Station: Qave Low Flow Record Station: s7Q10 Low Flow Record Station: w7Q10 Low Flow Record Station: 30Q2 Low Flow Record Station: Drainage Area New Site: MAR New Site: Qave per Report Equation: s7Q10 per Report Equation: w7Q10 per Report Equation: 30Q2 per Report Equation: Wittier Sanitary District Spec Tuckaseegee gage number not available 03.5106.1000 HA10 13.50 miles squared 33.80 cfs must be < 400 sq. miles 13.50 sq. miles 2.5 cfs/miles squared Drainage Area Ratio: [ new DA/ Da at gage Weighted Ratio: Over -ride Inappropriate Site (y ): 34 cfs 5.42 cfs 8.21 cfs 11.61 cfs Continue 1.00:1 Continue 1.00:1 Drainage Area New Site: MAR New Site: Weighted Qave per Report Equation: Weighted s7Q10 per Report Equation: Weighted w7Q10 per Report Equation: Weighted 30Q2 per Report Equation: u 13.50 miles squared 2.5 cfs/miles squared 34 cfs no input from above no input from above no input from above IWC Calculations Owner Whittier Sanitary District Facility Proposed WWTP Prepared By: Teresa Rodriguez, NPDES Unit [nter Design Flow (MGD): Enter s7Q10(cfs): Enter w7Q10 (cfs): 0.25 212.9 254.7 Residual Chlorine 7Q10 (CFS) DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (UG/L) UPS BACKGROUND LEVEL (l IWC (%) Allowable Conc. (ug/l) Fecal Limit (If DF >331; Monitor) (If DF <331; Limit) Dilution Factor (DF) NPDES Servor/Current Versions/IWC 212.9 0.25 0.3875 17.0 0 0.18 9357 Ammonia (NH3 as N) (summer) 7Q10 (CFS) DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (MG/L) UPS BACKGROUND LEVEL IWC (%) Allowable Conc. (mg/I) Ammonia (NH3 as N) (winter) 7Q10 (CFS) Not Required DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (MG/L) 550.42 UPS BACKGROUND LEVEL IWC (%) Allowable Conc. (mg/I) 212.9 0.25 0.3875 1.0 0.22 0.18 429.5 254.7 0.25 0.3875 1.8 0.22 0.15 1040.3 6/21/01 NC DENR - DIVISON OF WATER QUALITY 2B . 0300 .0303 LITTLE TENNESSEE RIVER BASIN Classification Name of Stream Description Class Date Index No. Unnamed Tributary to From source to Sylva Water WS-I HQW 08/03/92 2 79-39-11-2.5-(1) Fisher Creek Supply Intake Unnamed Tributary to From Sylva Water Supply C Tr 07/01/73 2 79-39-11-2.5-(2) Fisher Creek Intake to Fisher Creek Dills Creek From source to Fisher Creek C 08/03/92 2 79-39-11-3 Unnamed Tributary to From source to Sylva Water WS-I HQW 08/03/92 2-79-39-11-3-1-(1) Dills Creek Supply Intake Unnamed Tributary to From Sylva Water Supply C 08/03/92 2-79-39-11-3-1-(2) Dills Creek Intake to Dills Creek Monteith Branch From source to Scott Creek C 07/01/61 2 79-39-12 Kitchin Branch From source to Scott Creek C 07/01/61 2-79-39-13 Allens Branch From source to Scott Creek C 09/01/74 2-79-39-14 Cope Creek From source to Scott Creek C Tr 07/01/73 2-79-39-15 Dills Branch From source to Scott Creek C 09/01/74 2-79-39-16 Mack Town Branch From source to Tuckasegee C 07/01/61 2-79-40 River Tuckasegee River From Mack Town Branch to 3 09/01/96 2-79 (40.5) Cochran Branch Long Branch From source to Tuckasegee C 07/01/61 2-79-41 River Mince Branch From source to Long Branch C 07/01/61 2-79-41-1 Dicks Creek From source to Tuckasegee C Tr 07/01/61 2-79-42 River West Fork Dicks From source to Dicks Creek C 07/01/61 2-79-42-1 Creek Ned Branch From source to West Fork C 07/01/61 2-79-42-1-1 Dicks Creek Big Branch From source to West Fork C 07/01/61 2-79-42-1-2 Dicks Creek Buckeye Branch From source to West Fork C 07/01/61 2-79-42-1-3 Dicks Creek East Fork Dicks From source to Dicks Creek C 07/01/61 2-79-42-2 Creek Schoolhouse Branch From source to Dicks Creek C Tr 07/01/61 2-79-42-3 Laurel Branch From source to Tuckasegee C 07/01/61 2-79-43 River Barkers Creek From source to Tuckasegee C Tr 07/01/61 2-79-44 River West Fork Barkers From source to Barkers Creek C 07/01/61 2-79-44-1 Creek Middle Fork Barkers From source to Barkers Creek C 07/01/61 2-79-44-2 Creek East Fork Barkers From source to Barkers Creek C 07/01/61 2-79-44-3 Creek 27 WHITTIER SANITARY DISTRICT PO BOX 850 BRYSON CITY, NC 28713 July 3, 2001 Mr. David Goodrich North Carolina Department of Environment, Health and Natural Resources Division of Water Quality 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Dear Mr. Goodrich: CD Cr) J CL RE: Whittier Sanitary District Request for Speculative Effluent Limitations On behalf of the Whittier Sanitary District, this letter is to inform you that the District has authorized McGill Associates, P.A. of Asheville, North Carolina to request speculative effluent limitations for a discharge to the Tuckaseigee River. Further, as the design for this facility is completed, we intend to submit an application package for an NPDES discharge to construct this facility. Your review, assistance and cooperation in these efforts on this very important project are greatly appreciated. If you have any questions, please do not hesitate to call me. Sincerely, WHITTIER SANITARY DISTRICT George Rogers, Chairman cc: Steve Eller, Southwestern Commission Randy Hintz, McGill Associates 7:0-zot — 4,4 ApXoLat,Siti Mc G 1 SSOCI A TES March 8, 2001 Mr. David Goodrich) North Carolina Department of Environment, Health and Natural Resources Division of Water Quality Post Office Box 29535 Raleigh, North Carolina 27626-0535 Dear Mr. Goodrich: rn m cn A-4 Al f7 rn m � CO O :O D Cr— "r ) RE: Whittier Sanitary District Request for Speculative Effluent Limitations CD On the behalf of the Wittier Sanitary District, we are requesting speculative effluent limitations for a discharge to the Tuckaseegee River. As indicated on the enclosed portion of the Whittier USGS Quadrangle map, we are considering the elimination of the existing wastewater treatment facility serving the Jackson County Industrial Park (currently permitted for 5,000 GPD under NPDES permit # NC0000264) and constructing a new facility within the industrial park that would have a capacity of 250,000 GPD. The influent wastewater is expected to be typical municipal wastewater. This project would also eliminate an additional existing wastewater treatment facility in the area serving Gateway Chevron and Gateway Factory Housing (also currently permitted for 5,000 GPD under NPDES permit # NC0074250) We appreciate your prompt assistance with this very important issue. If you have any questions, please do not hesitate to call me. Sincerely, McGILL ASSOCIATES, P.A. RANDALL D. HINT , .E. Project Engineer Enclosure Engineering • Planning • Finance McGill Associates. P.A. • Y.U. liox 259, :Ishrrille. NC 2NS02 • 5 Broad Street. Aahrrillr, NC 2Rh01 828-252-0575 • FAX S2S-252-25IS 3923 ..Cove .II 630 000 FEET 30 h' ' u •