Loading...
HomeMy WebLinkAboutNC0059200_Wasteload Allocation_19940225t G car�r� t T cL J &) cvw AS V U—LA Gc: L t_ NPDES WASTE LOAD ALLOCATION PERMIT NO.: NC0059200 PERMI'1"1'BE NAME: FACILITY NAME: Carolina Investment Group Carolina Investment Group Facility Status: Existing Permit Status: Renewal Major Minor Pipe No.: 001 Design Capacity: 0.04 MGD Domestic (% of Flow): 100 % Industrial (% of Flow): Comments: Refer : Basinwide / Streamline WLA File Completed By Permits & Engineering At Front Of Subbasin RECEIVING STREAM: unnamed tributary to Thorpe Lake Hurricane Creek Class: B Sub -Basin: 04-04-02 Reference USGS Quad: G6NW (please attach) County: Jackson Regional Office: Asheville Regional Office Previous Exp. Date: 6/30/94 Treatment Plant Class: Not built. Classification changes within three miles: No change within three miles. Requested by: Prepared by: Reviewed by: Ma4k Wiggins l✓ o 34 / 44.5 (n)52, Ca_ W0. Date: 2/21/90 Date: - cet •e,Y Ll, I°t5Lj 9 0/31/ h0-8-r\ Date:. c /1 Modeler Date Rec. # eks (212,193 rlrl 00 Drainage Area (m' 2 ) r) , zt� Avg. Streamflow (cfs): 7Q10 (cfs) 0.1 Winter 7Q10 (cfs) 0 . f 5 30Q2 (cfs) 0.7.0 Toxicity Limits: IWC % Acute/Chronic Instream Monitoring: Parameters P€ imueq,,dosfs vee4- n,ti,1g Upstream / Location Downstream ✓ Location A Lox . 1 OD � FA0Vf cU SCI AR6Q FrintYr1, VNNAVArk'1 'in,tlpdt-ARH -*o �kaepc 1 Ak Effluent Characteristics Summer Winter BOD5 (mg/1) 15.0 zS-G NH3-N (mg/1) Li • C 4 • o D.O. (mg/I) 5• o S. C) TSS (mg/1) 3v 30 F. Col. (/100 ml) z d o z o o pH (SU) - ct <, . er RE3,puAL ciA.',o9,rdc (M li' 22.0 7...8.0 Pko*p1,02.-US ( MO/\ Man11+ R Ftiotat-Ay 4_ N CT W Q ".I i rvkc 7,0 Fvv1M1 r+'6h : M. 6 niv+c, o ,• SCALE 1:24 000 0 1 MILE t..Y.=4... I 0 7000)FEET 1 0 1 KILOMETER • % '.�-'`ter-'f , �;... r ��� / ,� } BM LHT 1553C 3510 ..__i , ` ,•r Kit•'`,•; �� .%, • r▪ -, ; -rY 443 / i.�. % . / \ 't \ 1}'ii' -� till _i. :ti_J� /.�f r\ • 1:. /. _1f�J v1 ' M�� ROAD CLASSIFICATION LIGHT -DUTY ROAD. HARD OR IMPROVED SURFACE - SECONDARY HIGHWAY HARD SURFACE UNIMPROVED ROAD Map # G6NW Sub -basin 40402 Stream Class WS-III & B HQ* Discharge Codes 05 06 Receiving Stream UT to Thorpe Lake/Hurricane Creek Design Q 0.02 MGD Permit expires 11/30/02 CONTOUR INTERVAL 40 FEET Trillium Links & Village NC0059200 Jackson County Page 1 Note for Farrell Keough From: Mack Wiggins Date: Feb, 161994 4:11 PM Subject: RE: Carolina Investment Group To: Farrell Keough Farrell I submited a WLA back on 12/16/93. Its a 100% domestic renewal. Process to streamline. Thanks, MACK. From: Farrell Keough on Wed, Feb 16, 1994 3:05 PM Subject: RE: Carolina Investment Group To: Mack Wiggins can I streamline this? (I'm out of the office until tomorrow) From: Carla Sanderson on Feb, 16 1994 7:17 AM Subject: Carolina Investment Group To: Farrell Keough Farrell - Please check with Mack on this WLA to see if it should have been on the stream line list Z(1-2-/11 ThtkAcii. wJ w.E- AiklitsemN, NO'pR,6blex,., wI is'bimok,(tNt Facility Name: NPDES No.: Type of Waste: Facility Status: Permit Status: Receiving Stream: Stream Classification: Subbasin: County: Regional Office: Requestor: Date of Request: Topo Quad: FACT SHEET FOR WASTELOAD ALLOCATION Carolina Investment Group NC0059200 Domestic - 100% Existing Renewal unnamed tributary to Thorpe Lake WS-III (correction) 04-04-02 Jackson Asheville Wiggins 12/20/93 G6NW Wasteload Allocation Summary (approach taken, correspondence with region, Facility has constru limit was applied. Plea Request # 7700 Stream Characteristic: USGS # Date: Drainage Area (mi2): Summer 7Q10 (cfs): Winter 7Q10 (cfs): Average Flow (cfs): 30Q2 (cfs): IWC (%): 03.5074.9125 1989 0.210 0.13 0.15 0.74 0.24 32.3 % nbt discharged. Facilities exist for dechlorination, thus the 28.0141 comment as to facilities ability to meet this limit. Special Schedule Requirements and additional comments from Reviewers: Recommended by: Reviewed by Instream Assessment: Date: Regional Supervisor: Date: Permits & Engineering: Date: Farrell Keough Date: 1N Fe110.4e41LY, RETURN TO TECHNICAL SERVICES BY: 2 CONVENTIONAL PARAMETERS Existing Limits: Monthly Average Summer Winter Wasteflow (MGD): 0.04 BOD5 (mg/1): 15.0 25.0 NH3N (mg/1): 3.0 6.0 DO (mg/1): 5.0 5.0 TSS (mg/1): 30 30 Fecal Coliform (/100 ml): 200 200 pH (SU): 6 - 9 6 - 9 Residual Chlorine (14/1): monitor monitor Oil & Grease (mg/1): nr nr TP (mg/1): monitor monitor TN (mg/1): monitor monitor Recommended Limits: Monthly Average Summer Winter WQorEL Wasteflow (MGD): 0.04 BOD5 (mg/1): 15.0 25.0 WQ NH3N (mg/1): 3.0 6.0 WQ DO (mg/1): 5.0 5.0 WQ DO TSS (mg/1): 30 30 Fecal Coliform (/100 ml): 200 200 pH (SU): 6 - 9 6 - 9 Residual Chlorine (14/1): 28.0 28.0 WQ Oil & Grease (mg/1): nr nr TP (mg/1): monitor monitor TN (mg/1): monitor monitor Limits Changes Due To: Parameter(s) affected: Residual Chlorine facility on cusp of 'new and existing' rules and has dechlorination capabilities. x_ Parameter(s) are water quality limited. For some parameters, the available load capacity of the immediate receiving water will be consumed. This may affect future water quality based effluent limitations for additional dischargers within this portion of the watershed. OR No parameters are water quality limited, but this discharge may affect future allocations. 3 INSTREAM MONITORING REQUIREMENTS Upstream Location: approximately 100' feet above discharge point Downstream Location: at mouth of unnamed tributary to Thorpe Lake Parameters: Temperature, dissolved oxygen, fecal coliform, conductivity Special instream monitoring locations or monitoring frequencies: MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS Adequacy of Existing Treatment Has the facility demonstrated the ability to meet the proposed new limits with existing treatment facilities? Yes No If no, which parameters cannot be met? Would a "phasing in" of the new limits be appropriate? Yes No If yes, please provide a schedule (and basis for that schedule) with the regional office recommendations: If no, why not? Special Instructions or Conditions Wasteload sent to EPA? (Major) (Y or N) (If yes, then attach updated evaluation of facility, including toxics spreadsheet, modeling analysisif modeled at renewal, and description of how it fits into basinwide plan) Additional Information attached? (Y or N) If yes, explain with attachments. Facility Name: Permit Number: Engineer: Subbasin: Recieving Stream: USGS quad #: Request Number: Date: Expiration date: Carolina Investment Group NC0059200 Wiggins 04-04-02 unnamed tributary to Thorpe Lake G6NW 7700 12/20/93 6/30/94 Existing WLA checked: Staff Report: Topo checked: USGS Flows confirmed: PIRF / APAMS: IWC Spreadsheet: Stream Classification: Nutrient Sensitivity: lnstream Data: x x x nr nr x na 03.5074.9125 '89 ws -III&B discharge is into an impoundment facility not yet built Brief of WLA Analysis Previous WLA's 1984: facility first received a Permit with secondary limits and a dissolved oxygen limit of 5.0 mg/I. 1989: two wasteloads were sent out during this review. The first was based on a model of the facility with secondary limits. It looks as if the second wasteload analysis was done in an attempt to deal with the eutrophication problems that might arise due to this discharge. The modeling analysis for nutrients at that time involved breaking up of the impoundment into equal segments, (in this case 200' segments) and modeling accordingly. Unfortunately, this method bases its units, (Le. Reaches) on arbitrary distinctions and uses velocities, (calculated as though this was a stream) as the other variable. Converting this information to our present Nutrient SOP, we have the below residence times, (all well under the 14 day retention time). 1991: letter received from Tom Massie about proposed discharge. Letter states that the East Fork of the Tuckasegee, (tributary to Thorpe Lake) is already designated as HQW, due to water withdrawals by Western Carolina University, and this may reflect future plans for West Fork area and tributaries to Thorpe Lake; as of yet this is not designated HQW. Massie requests we require better than secondary limits as well a stand-by power. — After checking with the Classifications group, I have determined that this waterbody is in fact a WS-III & B. 1994: the facility has been recently built with dechlorination capabilities as well as tertiary filters. I have called the Region to see if the addition of a chlorine limit is achievable by the facility. using Mike Scoville's notes, (1989 WLA) and our current nutrients to impoundments SOP: cross sectional yesldence Emil width (ft / ave) depth (ft / ave) area 30Q2 velocity lima R 1 100 2.33 233 0.24 0.00103 — 0.01 days R2 300 6.99 2097 0.24 0.0001144 — 0.1 days R3 * 575 11.65 6698.75 0.24 0.0000358 — 0.3 days R4 * 900 16.31 14,679 0.24 0.00001635 - 0.7 days * R3 and R4 was omitted due to influences of dispersion, flow through lake, turbulent boundary, etc., [per Scoville's notes] Staff Report Mentions that Thorpe Lake will probably become HQW and this discharge is within 1/2 mile of the lake, but does not have an IWC of over 50%. Per a mail message from Ruth, (9 / 10 / 93) IWC should be ignored and we should drop the safety factor requirement as well as the toxicity test requirement. Residual Chlorine 7010 (cfs) Design Flow (mgd) Design now (cfs) Stream Std (µg/l) Upstream bkgrd level (µg/l) IWC (%) Allowable Concentration (µg/l) Allowable Concentratbn (nsgll) Fecal Limit Ratio of 2.1 :1 0.1 0.04 0.062 17 0 32.3% 52.6 0.053 200/100m1 0.1 0.04 0.062 1 0.22 32.3% 2.6 0.2 0.04 0.062 1.8 0.22 29.2% 5.6 Ammonia as NH3 (summer) 7010 (cfs) Design Flow (mgd) Design Flow (cfs) Stream Std (mg/1) Upstream bkgrd level (mg/I) IWC (%) Allowable Concentration (mg/1) Ammonia as NH3 (winter) 7010 (cfs) Design Flow (mgd) Design Flow (cfs) Stream Std (mg/I) Upstream bkgrd level (mg/I) IWC (%) Allowable Concentration (mg/l) . Si Tom L. Massie Box 41 Macktown Road Sylva, North Carolina 28779 June 7, 1990 Mr. Dale Overcash DEHNR Division of Environmental Management Post Office Box 27687 Raleigh, North Carolina 27611-7687 Dear Mr. Overcash: \1 ON .. ;,. ~,, JUN131990 I wish to provide some input into a wastewater discharge permit for the Communities of Signal Ridge, owned by Carolina Investment Group, for 120,000 gpd into North Creek. I own property on Norton Creek approximately 1.5 miles below the discharge point where the creek empties into Lake Thorpe. Let me say first, I am not opposed to issuance of a permit; however, I would like to see several additional measures required for this and other discharge permits for Norton Creek. The additional measures are things which are above the normal requirements for a Class C watershed as Norton Creek is currently designated. The "extras" include emergency backup power supply to prevent discharge of untreated wastes directly into the stream and lake during power outages; a requirement for tertiary filtra- tion instead of just secondary treatment; and consideration of reduced effluent limits (i.e., 15/15 limits vs standard 30/30 limits). My rationale for these addi- tions are as follows: While Norton Creek currently is designated a Class C Trout Stream, DEHNR is already considering requests to designate Lake Thorpe as High Quality Waters (HQW). This designation is logical since Lake Thorpe and tributaries compose the west fork of the Tuckasegee River, and the East Fork has already been designated HQW by the Environmental Management Commission this spring. Western Carolina University uses the Tuckasegee River as its potable water source, below the convolution of the East and West Forks. Discussions with individuals in the Asheville Regional Office Water Quality Section reveal that preliminary test results indicate that Lake Thorpe meets the threshhold criteria for HQW status. If this happens, then all tributaries of the lake must meet the same more stringent requirements of HQW's for all waste- water discharge permits. Requiring "Signal Ridge" to do so before construction pro- tects the public and saves the developers the expense of retro-fitting the facility. The requests for emergency power sources, tertiary filtration, and reduced limits will bring the plant into compliance with the more stringent guidelines. Additionally, several sociological factors are involved with the issuance of this permit. There has been significant public opposition to wastewater discharge per- mits in the Glenville and Cashier's areas in the recent past. Requirement of these extra precautions can significantly placate public opposition, while indicating community interest and promoting goodwill on the developer's behalf. Misconceptions as to the effect on recreational activities like swimming and fishing, can be abated z 1 .. • JUN 1 1990 Page Two 1'ijti..:; June 7, 1990 through more stringent requirements beyond secondary treatment. As a final request, I ask your office to consider more stringent requirements on all wastewater discharge permits considered in the future on tributaries of Lake Thorpe. These requirements may depend upon the designation of Lake Thorpe as a HQW, but do not have to. Consideration of uniformly applying such recommendations as I have made to all existing permits which have not been constructed to date as a prerequisite of permit renewal or authorization to construct would be appreciated and prudent. Thank you for this opportunity to comment on this project. Tom L. Massie