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HomeMy WebLinkAboutNC0086070_Issuance of Permit_20110930 1 A V ,� �.7�� A A b NCDENR North Carolina Department'of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H.Sullins Dee Freeman Governor Director Secretary September 30,2011 Mr. Doyle Freeman,Manager Henderson County Utilities Department 100 N.King Street,Suite 210 Hendersonville, North Carolina 28792 Subject: Issuance of NPDES Permit No.NCO086070 Western Justice Academy WWTP—PC-2 Henderson County Dear Mr. Freeman: 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). The following modifications in the June 22,2011 draft permit remain in the final permit: • Modifying existing Single Effluent Limits page to Two Effluent limits pages with Phased Effluent flows; o A(1)0.010 MGD with BOD limits of Monthly Average 30.0 mg/L and Weekly Average 45.0 mg/L NH3as N Summer limits of Monthly Average 7.0 mg/L and Weekly Average 18.0 mg/L NH3 as N Winter limits of Monthly Average 20.0 mg/L and Weekly Average 35.0 mg/L o A(2.)0.030 MGD • Addition of Permit Reporting Condition A(3); o Provide the flowing stream flow data for Lewis Creek at your discharge point o 7010s(cfs) o 7Q10w(cfs) 0 30Q2(ds)and o Average stream flows(cfs) • Footnotes have been modified or deleted. • Instream monitoring for Fecal Coliform and Dissolved Oxygen have not been deleted. Please note that Lewis Creek is listed as an impaired waterbody on the North Carolina 303(d)Impaired Waters List. . Addressing impaired waters is a high priority for the Division, and instream data will continue to be evaluated. If there is continual noncompliance with your effluent limits,or if stream impairment can be attributed to your facility's discharge, mitigative measures may be required. Also please note Permit Reporting Condition A (33 which requires your submittal of requested information by October 29,2011. 1617 Mal service Center,Ralegh,Nath Carolina 27699-1617 Location:512 N.Salisbury St.Raleigh,Nath Carolina 27604 Plane:919-807-63871 FAK 919-607.64951 Custaner Service:1-877-623-6748 Noe Carolina Internet:h1tp1/portal.nucdenr.agMreWwgftarne atCaroh; An Equal OpporU*1 Af wdM Adbn Empbw 1 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 Guerra at telephone number(919)807-6387. nee ly, Coleen H.Sullins Enclosure: NPDES Permit NC0086070 cc: Asheville Regional Office/Surface Water Protection—Surface Water Section,Supervisor Central files NPDES Unit A Permit NCO086070 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY PERMIT 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, Henderson County Utilities Department is hereby authorized to discharge treated wastewater from a facility located at the Western Justice Academy WWTP 3973 Chimney Rock Road / US Highway 64 Edneyville Henderson County to receiving waters designated as Lewis Creek in the French Broad River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV hereof. This permit shall become effective November 1, 2011. This permit and authorization to discharge shall expire at midnight on November 30, 2015. Signed this day September 30, 2011. Co H.Sullins, Director D10i'sion of Water Quality By Authority of the Environmental Management Commission Permit NCO086070 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge, are hereby superseded and, as of this issuance, any previously issued permit describing this treatment facility or 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 described herein. Henderson County Utilities Department is hereby authorized to: 1. Continue to operate an existing 0.030 MGD extended aeration wastewater treatment plant consisting of the following treatment components: • Bar screen and pumps • Inlet flow control splitter box • Flow equalization basin (7,300 gallon) • Dual aeration basins (53,000 gallons total) designed to operate in series or parallel with dual (250 scfm) blowers • Dual clarifiers ( 2,430 gallons each) with return sludge • Pre-filter tablet chlorinator • Dual multi-media (sand & anthracite) tertiary filters (with a minimum of 10 sq ft each) • Clearwell ( 3,124 gallon) • Post aeration with audible and visual alarms • Continuous recording flow meter • Tablet chlorinator • Chlorine contact chamber (625 gallon) • Tablet dechlorinator • Composite sampler • Aerobic digester (5,000 gallon) • Effluent pump station. 2. This facility is located at the Western Justice Academy WWTP, 3973 Chimney Rock Road / US Highway 64, in Henderson County. 3. Discharge from said treatment works at the location specified on the attached map into Lewis Creek, classified C-Trout waters in the French Broad River Basin. �dney�iIleW #t14 J l � t ` • �rli 1 !i r T+ 44 0 t LHT 1850 .F !! • r0 WWTP ` + =40 ' . � 2 f i '` • �e�ax� 1 T+1851� 'a i. e►rr� .sr X11,0, 2164 t I t � s�•a= :east►• 41 11 IF 0 4 3- Outfall 001 1 CO l /� • • a BL` E RIDGES �\ 4941* f4lt r, � to + Henderson County Utilities Department Facility . : Western Justice Academy WWTP Location Latitude: 35'23'32" N State Grid: Bat Cave not to scale Longitude: 82'20'26" W Permitted Flow: (0.010 8 0.030 MGD) Receiving Stream:Lewis Creek Stream Class: C-Trout ]� J I FNPDES Permit No. NCO086070 Drainage Basin: French Broad River Basin Sub-Basin: 04-03-02/06010105 North orth Henderson County t • • Permit NCO086070 y A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning on the effective date of this permit and lasting until flow exceeds 0.010 MGD (Monthly Average), the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and.monitored by the Permittee as specified below: EFFLUENT _ : LIMITS_ -MONITORING -CHARACTERISTICS_.__ ---:----------_____�_�..----—_-__ . __. --REQUIREMENTS---- Monthly Weekly Daily Measurement Sample Sample _ . Average Average Maximum , Frequency_ Type Location' 50050-Flow0.010 MGD Continuous RecordingInfluent or Effluent 50060-Total Residual Chlorine2 28.0 ug/L 2/Week Grab Effluent 00310-BOD, 5-day Influent and (200C)3 30.0 mg/L 45.0 mg/L Weekly Composite Effluent 00530-Total Suspended Influent and Solids 30.0 mg/L 45.0 mg/L Weekly Composite Effluent 00610-NH3 as N 7.0 mg/L 18.0 mg/L Weekly Composite Effluent (April 1 –Oct 31) 00610-NH3 as N 20.0 mg/L• 35.0 mg/L Weekly Composite Effluent (Nov 1 –March 31) 00300-Dissolved Oxygen Weekly Grab Effluent 00300-Dissolved Oxygen Weekly Grab Upstream & Downstream 31616-Fecal ColiformEffluent, (geometric mean) 200/100 ml 400/100ml Weekly Grab Upstream A Downstream 00010-Temperature (OC) Daily Grab Effluent 00010-Temperature Upstream S (OC) Weekly Grab Downstream 00400-pH Between 6.0 and 9.0 s.u. Weekly Grab Effluent 00600-Total Nitrogen Semi-Annually Composite Effluent (NO2.NO3.TKN) 00665-Total Semi-Annually Composite Effluent Phosphorus ootnotes: 1. Upstream=50 feet above the discharge point,Downstream=0.5 miles downstream of discharge point. 2. The Division shall consider all effluent TRC values reported below 50 ug/L to be in compliance with the permit. However,the Permittee shall continue to recons and submit all values reported by a North Carolina certified laboratory (including field certified),even if these values fall below 50 ug/L. 3. The monthly average effluent BOD5 and Total Suspended Solids concentration shall not exceed 15%of the respective influent value(85%removal). There shall be no discharge of floating solids or visible foam in other than trace amounts. a Permit NC00186070 A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning when the flows exceed 0.010 MGD (Monthly Average) 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: EFFLUENT , LIMITS MONITORING CHARACTERISTICS __ _.___ .......__ _____�.---:-_ - ----:- ---. - _-___.. ___..____REQUIREMENTS- -- Monthly Weekly Daily Measurement Sample Sample Average Average Maximum Frequency T e Location' 50050-Flow 0.030 MGD Continuous Recordin Influent or Sample] Effluent 50060-Total Residual Chlorine2 28.0 ug/L 2/Week Grab Effluent 00310-BOD,5-day (20°C)35.0 mg/L 7.5 mg/L Weekly Composite Influent and (April 1-Oct 31 Effluent 00310-BOD,5-day (200C)3 10.0 mg/L 15.0 mg/L Weekly Composite Influent and Nov 1 -March 31 Effluent 00530-Total 3 30.0 mg/L 45.0 mg/L Weekly Composite Influent and Suspended Solids Effluent 00610-NH3 as N 2.0 mg/L 6.0 mg/L Weekly Composite Effluent (April 1 —Oct 31) 00610-NH3 as N 4.0 mg/L 12.0 mg/L Weekly Composite Effluent (Nov 1 —March 31) 00300-Dissolved Oxygen Weekly Grab Effluent 00300-Dissolved Oxygen Weekly Grab Upstream& Downstream 31616-Fecal Coliform Effluent (geometric mean) 200/100 ml 400/100ml Weekly Grab Upstream& Downstream 00010-Temperature (°C) Daily Grab Effluent 00010-Temperature Weekly Grab Upstream& °C Downstream 00400-pH Between 6.0 and 9.0 s.u. Weekly Grab Effluent 00600-Total Nitrogen Semi-Annually Composite Effluent NO +NO +TKN 00665-Total Semi-Annually Composite Effluent Phosphorus Footnotes: 1. Upstream=50 feet above the discharge point,Downstream=0.5 miles downstream of discharge point. 2. The Division shall consider all effluent TRC values reported below 50 ug/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 ug/L. 3. The monthly average effluent BOD5 and Total Suspended Solids concentration shall not exceed 15%of the respective Influent value (85%removal). There shall be no discharge of floating solids or visible foam in other than trace amounts. Permit NCO086070 r A. (3.) PERMIT REPORTING CONDITION s' Within thirty(30)days of permit issuance,permittee is required to submit,to the Division of Water Quality, U .: datafrom the USGS reflecting the following flow parameters for Lewis Creek at your discharge.=--,-- . 2.=7Q10w(cfs) "'• _ _ __ Y 3. 3002(cfs),and ~ � 4. Average stream flows(ds) . - ._ � _ .+, � - Y; . r•. is ei IL I . v � '2 !, - k .. �~t 1•..11 � 'y t4 ► '`r' .r :,•r7 �' ., ('., f �; �Iq, ry_ .•j ',f.. +'1 t:,lti•a. x �' �.. t v-,���•�Y'tii:.r€.i:+_•rzt4>L�. _ �tm-,r��•_. . .. %'Ettt•�., i�'•�-..,;.:�c�*?•'_.>.: ,.......df'..•_��.�r,..1�i'"\�+.'i ,q :�r 'V IL-c a'_f�_s.. NCbENRIDWQ/NPDES TimesmNews 32002513 Notification of Intent to Issue a NPDES Wastewater Permit A PART Or The NewYork-Times ' $141.63 Company PUBLIC'NOTICE North Carolina CERTIFICATION OF PUBLICATION Environmental Management Commission/ June 27,2011 NPDES Unit, 1617 Mail Service Center, I,Jan Sullivan,affirming the following under the penalties of Raleigh, 17 g g P 27699-1617 perjury state: Notice of Intent to I am employed by Times-News,a subsidiary of the New York Issue a NPDES Wastewater Permit Times Company. Times-News,a daily newspaper of general circulation printed and published in the city of Hendersonville, The North Carolina En- county of Henderson,and state of North Carolina. I hereby vironmental Manage- ment certi that the advertisement annexed hereto was published in pose Commission pro- certify P poses to issue a the editions of The Times-News on the following date or dates: NPDES wastewater dis- charge permit to the person(s) listed below. 06/25/11 Written comments re- garding the proposed permit will be accepted until 30 days after the publish date of this no- tice. The Director of the NC Division of Water Quality (DWQ) may hold a public hearing should And that the said newspaper in which such notice,paper, there be a significant document,or legal advertisement was published was,at the time degree of public inter- of each and every publication,a newspaper meeting all of the est. Please mail com- requirements and qualifications of Section 1-597 of the General menand/or i tion r requests to DWQ a- at Statutes of North Carolina and was a qualified newspaper within the above address. In- the meaning of Section 1-597 of the General Statutes of North terested persons may Carolina. visit the DWQ at 512 N. Salisbury Street, Ra- leigh, NC to review in- This 27th day of June,2011. formation on file. Addi- tional information on NPDES permits and this notice may be found on (Signed) CL-K, our website: http:Hportal.ncdenr.org Sworn to and bscribed before me,this 27th day of June, web/wq/swp/ps/npdes/c 2011. alendar, or by calling (919)807-6304. "OL'00 ro—h /'J. Q,_� Notary Public Henderson County Utili- Deborah H. Owen ties requested renewal of permit NCO086070 for Western Justice SPH H Jf WF � Academy i Henderson O �\ ,/ dischCounargeis this permitted tre ted �•���0 '% domestic wastewater to Q t P�b11c Lewis Creek, French Nota Y n County _ 1717 Four Seasons Blvd. Hendersonville, NI Broad River Basin. My corn e150 bXp`tes P. O. Box 490 • Hendersonville, NC 287 (s/25) rnlssion os►o�120 =�,' 828/692-0505 • FAX 828/692-2319 • 828/6 44 0"`\,.�' www.hendersonvillenews.com N000067332 n'T'H IC1P�\""�' NC 2010 Integrated ReportCategories 4 and 5 Impaired Waters A11,13,123 Waters in NC are in Category 5-303(d)List for Mercury due,to statewide fish consumption advice for several fish species ; #U—Number AU Name AU Description LengthArea AU_Units Classification_ Category;Parameter Reason for Rating Use Category Collection Year 303(d)year _- �French Broad River Basin Headwaters French Broad River Watershed 0601010501 drench Broad River Basin French Broad River Subbasin 06010105 French Broad River Basin Headwaters French Broad River Watershed. 0601010501 , Q 6-2-(0.5)b West Fork French From Above trout farms to below trout farm 0.6 FW Miles B;Tr Broad River 5 Ecological/biological Integrity Benthos Fair Bioclassification Aquatic Life 2001 1998 tench Broad River Basin , Davidson River-French Broad River Watershed 0601010502 u Q 6-34(15.5) Davidson River From Avery Creek to Olin Corporation 2.7 FW Miles WS-V,B;Tr Water Supply Dam 5 Low pH Standard Violation Aquatic Life 2008 2008 tench Broad River Basin Mud Creek Watershed 0601010503 . — W .. .,..s. a,x . ,, ,."-.. . — _ Q 6-55-8-1a Bat Fork From source to State Route 1779 4.8 FW Miles C 5 Ecological/biological Integrity Benthos Poor Bioclassification Aquatic Life 1989 1998 Q 6-55$-11b Bat Fork From State Route 1779 to Johnson 1.5 FW Miles C Drainage Ditch 5 EcologicaVbiological Integrity FishCom Poor Bioclassification Aquatic Life 2002 1998 Q 6-55-11-(1)a Clear Creek From source to Laurel Creek 2.7 FW Miles B;Tr 5 Ecological/biological Integrity Benthos Poor Bioclassification Aquatic Life 2001 2000 Q 6-55-11-(1)c Clear Creek From Puncheon Camp Creek to Lewis Creek 2.1 FW Miles B;Tr 5 Ecological/biological Integrity Benthos Poor Bioclassification Aquatic Life 2001 2000 g Ecological/biological Integrity FishCom Fair Bioclassification Aquatic Life 2001 2000 Q 6-55-8-21b Devils Fork From first unnamed tributary west of State 2.7 FW Miles C Route 1006 to Johnson Drainage Ditch 5 Ecological/biological Integrity Benthos Poor Bioclassification Aquatic Life 2000 2006 Q 6-55-11-6 Lewis Creek From source to Clear Creek 3.8 FW Miles C;Tr 5 Ecological/biological Integrity Benthos Fair Bioclassification Aquatic Life 2006 2008 Q 6-55b Mud Creek From State Route 1125 to Little Mud Creek 1.9 FW Miles C 5 Ecological/biological Integrity Benthos Fair Bioclassification Aquatic Life 2007 1998 S Ecological/biological Integrity FisbCom Poor Bioclassification Aquatic Life 2002 1998 Q 6-55c Mud Creek From Little Mud Creek to Byers Creek 11.0 FW Miles C 5 Ecologla"lological Integrity Benthos Fair Bioclassification Aquatic Life 2000 2006 5 Ecological/biological Integrity FlshCom Fair Bioclassification Aquatic Life 2002 2006 NC 2010 Integrated Report Category 4 and 5 303(d)List EPA Approved Aug 31,201 9/20/2010 Page 31 of 145 • DENR/DWQ FACT SHEET FOR NPDES PERMIT DEVELOPMENT NPDES No. NCO086070 Facility Information Applicant/Facility Name: Western Justice Academy WWTP Applicant Address: 100 N. King Street, Suite 210, Hendersonville NC 27371 Facility Address: 3973 Chimney Rock Road/US HWY 64, Henderson, NC Permitted Flow New Phased Flow addition of two effluent pages A. 1 0.010 MGD and A.(2)-0.03 OMGD Type of Waste: Domestic Facility/Permit Status: Class II/Active; Renewal County: Henderson Count Miscellaneous Receiving Stream: Lewis Creek Regional Office: Asheville ARO Stream Classification: C-Trout State Grid/USGS Bat Cave Quad: 303(d)Listed? Yes Permit Writer: Bob Guerra Subbasin: 04-03-02 Date: June 22,2011 Drainage Area(mi2): 4.7 s7Q10 (cfs) Assumed 0.0 cfs. Will require facility to generate and submit 7Q10. w7Q10(cfs) Assumed 1.9 cfs.Will require facility to generate and submit w7Q10. Lat. 35023'32"N Long. 82020'33"W IWC (%): Facility will determine and submit BACKGROUND The Henderson County Utilities Department has requested renewal of its NPDES permit NCO028916 for the Western Justice Academy WWTP which has a design flow of 0.03 MGD. The WWTP discharges into Lewis Creek, Class C-Trout water, in the French Broad River Basin. The facility treats domestic waste only and has no industrial dischargers. RECEIVING STREAM INFORMATION This facility is located in Subbasin 04-03-02 and discharges to Lewis Creek, classified C-Trout waters in the French Broad River Basin. The receiving stream is listed on the 2010 303(d) list as impaired. Historically, there have been no 7Q10 values available for stream flows to determine limits for the Western Justice discharge. As of this renewal no additional flow information has been submitted by the facility. Facility will be required to submit flow data during this permit renewal to formulate science based limits at all flow levels. PERMIT RENEWAL SUBMITTAL Permittee submitted a June 9, 2010 letter requesting changes to permit. Increase BOD limits to 45 mg/L daily max, 30 mg/L monthly average. (In 2011 facility submitted the same request for limits to be changed which was denied by DWQ.): • Eliminate upstream/downstream FC and DO sampling • Revise Summer NH3 and N limits to 10 mg/L monthly Avg and 35 mg/L daily max • Revise Winter NH3 and N limits to 25 mg/L monthly Avg and 35 mg/L daily max. The rational utilized by the facility in this limit change request indicates this discharge point is within 0.5 miles of NCO088056 Blacksmith Run which has different permit limits for these parameters which do not characterize a discharge to a zero flow stream.. Fact Sheet NPDES NCO028916 Renewal Page I LIMITS DEVELOPMENT: +. Existing zero flow denotation is a policy decision made on 11/7/1997 and based on information . presented during 9-26-97 public hearing for this facility which stated that unauthorized water diversions from farmers and agricultural practices were drying up Lewis Creek. This information and policy decision generated the 5 &2 limits with 5 mg/I DO and 17 ug/L TRC placed in the first permit, to ensure the maximum level of treatment. These limits have been incorporated in each subsequent permit renewal until this renewal. ARO indicates that the assumption of unauthorized water diversions was not documented and that agricultural practices have changed since the permit was issued. ARO also agrees that CO should reevaluate the facilities request at this time. Model run by Jackie Nowell using 1.2 ds as 7Q10 value and utilizing reduced flows at 0.010 MGD predicated compliance from Western Justice. Two effluent pages A. (1)at 0.010 MGD and A. (2).At 0.030 MGD will be incorporated into this permit renewal. Facility will be required to submit new science based (USGS)flow data for all flows which will be utilized in conjunction with the Blacksmith and Western Justice renewals in 2016. PERMIT LIMIT COMPLIANCE Since the permit was renewed in 2006, the facility has received six(6) NOV's for Monitoring Frequency violations and five (5) NOV's for BOD5 violations. DMR DATA(2006-2010) DMR data from January 2006 through July 2010 was reviewed. Monthly and weekly averages for conventional parameters are summarized below. Effluent Characteristics 7 Monthly Average Flow 0.001962 MGD BOD, 5-day, 20° C 2.930 mg/L Total Suspended Solids 2.175 mg/L NH3 as N 0.206 mg/L Fecal Coliform (geometric mean) 6.831 #/100ml Total Residual Chlorine DAILY MAX= 15.670 u/L This facility also collects data for total nitrogen, total phosphorus, temperature (effluent and Instream) pH, dissolved oxygen. INSTREAM MONITORING Upstream Site: At least 50 feet above the outfall; Downstream site: Approx. 0.5 miles from the outfall. A review of instream data for DO and Temperature indicated no elevated values for these parameters. It is recommended that instream sampling for Temperature and DO be removed from this permit. A review of instream data for Fecal Coliform indicates elevated downstream readings for sampling events during this permit cycle. It is recommended that instream monitoring for Fecal Coliform be continued at the existing frequency. Fact Sheet NPDES NCO028916 Renewal Page 2 l . INSPECTION/CORRESPONDENCE FILES (2006-2010) The ARO has conducted five (3) Inspections during this permit cycle with no reported compliance issues. Facility appeared to be well operated and maintained during 8-25-2010 inspection. SUMMARY OF PROPOSED CHANGES In keeping with Division policies, the following changes will be incorporated into the permit: • Two effluent pages reflecting Phased flows have been added • A. (1) 0.010 MGD with • BOD limits of Monthly Average 30.0 mg/L and Weekly Average 45.0 mg/L • NH3 as N Summer limits of Monthly Average 6.0 mg/L and Weekly Average 18.0 mg/L • NH3 as N Winter limits of Monthly Average 17.0 mg/L and Weekly Average 35.0 mg/L • A. (2.) 0.030 MGD • BOD Summer limits of Monthly Average 5.0 mg/L and Weekly Average 7.50 mg/L • BOD Winter limits of Monthly Average 10.0 mg/L and Weekly Average 15.0 mg/L • NH3 as N Summer limits of Monthly Average 2.0 mg/L and Weekly Average 6.0 mg/L • NH3 as N Winter limits of Monthly Average 4.0 mg/L and Weekly Average,12.0 mg/L • Footnote has been added to include new TRC Language. PROPOSED SCHEDULE FOR PERMIT ISSUANCE Draft Permit to Public Notice: June 22, 2011 Permit Scheduled to Issue: August 22, 2011 NPDES DIVISION CONTACT If you have questions regarding any of the above information or on the attached permit, please contact Bob Guerra at(919) 807-6387 or by email at bob.guerra(a-ncdenr.gov. Regional Office Comments NAME' DATE' r- Fact Sheet NPDES NCO028916 Renewal Page 3 Guerra, Bob From: Doyle Freeman[dfreeman@hendersoncountync.org] Sent: Tuesday,June 14,20118:46 AM To: Guerra,Bob Subject: FW: Initial response from USGS concerning low-flow estimate for Lewis Creek...Re: 7Q10 info Mr. Querra: Below is the response from USGS for the 7Q10 request for Lewis Creek. Thanks, Oayre Freemam Manarr Henderson County utilities Cane Creek Seww gSteeist3D� Nodh King Street—SS MOulk 210 Hendersonville,NC 28792 Phone 8286946W8 Fax 82869466194-661 dtreem a @hendersoncouwtync.ag All&-mail c omespondermeto andtrom tNs address is 9*ectto the North Carolina Puklic R a orris Law,whah may resat in monitoring and disclosure to third padies. From: John C Weaver jmailto:jcweaver@tusgs.4ov1 Sent: Wednesday,June 08, 20113:49 PM To: Doyle Freeman Cc: Curds Weaver; William F Hazell Subject: Initial response from USGS concerning low-flow estimate for Lewis Creek...Re: 7Q10 info Mr. Freeman, In response to your inquiry about the 7Q10 low-flow statistic for a location on Lewis Creek at U.S. Highway 64 near Edneyville in Henderson County,the following initial response is provided: A check of the low-flow files here at the USGS North Carolina Water Science Center does not indicate a previous determination for your specific point of interest on Lewis Creek at U.S. Highway 64 near Edneyville. In the absence of discharge records sufficient for a low-flow analysis,estimates of low-flow discharges are determined by assessing a range of low-flow yields(expressed as flow per square mile drainage area,of cfsm)at nearby locations where low-flow discharges have been determined. A preliminary assessment of available information at nearby locations where low-flow discharges were published in a statewide low-flow report for North Carolina(Giese and Mason, 1993;available online at http://pubs.er.usgs.gov/#search:advance/page=l/pape size=100/series cd=WSP/report number--2403:0)indicates the 7Q10 low-flow yields for streams in vicinity of Edneyville range from about 0.3 to about 0.7 cfsm (average between 0.4 and 0.5). The regional relations presented in the above-referenced report for Hydrologic Area 10 indicate that a 7Q10 low-flow yield (using a drainage area 5 sqmi and mean annual runoff at 1.5 cfsm)is 0.24 cfsm. A preliminary drainage area of 4.6 sqmi was determined for your point of interest using the online StreamStats application available for the upper French Broad River basin (http:/twater.usgs.gov/osw/streamstats/north carolina.htmi). Applying the range of above yields to this drainage area provides the 7Q10 flow estimates in units of cubic feet per second(cfs): 1 r from'about f.4 to about 3.2 cfs(average about 2.1 cis) Please note the estimated discharges and regional relations presented in the report are based on data ending during the late 1980's and do not reflect the occurrence of recent droughts,which have resulted in decreased low-flow statistics at some USGS gaging stations. Please understand this information is based on a preliminary assessment. Further analyses would be needed to confirm the initial assessment,and a fee of$250 per site is required for completion of a more in-depth assessment and formal determination of estimates. If you want us to complete a more in-depth assessment, please let me know and we'll proceed from there. The assessment would be completed within four weeks,and the response would be made via email with an invoice mailed separately via regular mail following the provision of estimates. Hope this information is helpful. Please call if you have questions. Thank you. Curtis Weaver 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 Mobile:(919)830-6235 E-mail address—icweaver(a�usgs.gov Internet address—http://ne.water.usgs.gov/ From: William F HazWVWRD/USGS/DOI To: John C Weaver/WRD/USGS/DOICUSGS Date: 06/03/201101:29 PM Subject: 7010 Info Curtis, I received a call from Doyle Freeman, Henderson County Cane Creek Sewer District,828-694-6608. He is looking for low flow info on Lewis Cr just us of US 64 nr Edneyville,NC. I told him I would forward this request to you and you would contact him. Thank you. Bill Hazell William F. Hazell U.S.Geological Survey 44 Buck Shoals Road,Suite A-2 Arden, North Carolina 28704 828-684-5905 ext 5 828-684-5772 fax 828-778-8505 cell 2 Blacksmith Run WWTP(NC0088056)and NC Western Justice Academy(NC0086070) jmn Level B model runs on receiving stream- Lewis Creek FRB02 Lewis Creek impaired for biological integrity 2010 303(d) list Ran models to determine if Lewis Creek is protected for DO standard and NH3 toxicity with both dischargers included. Previous models had been run on this segment of Lewis Creek but dischargers were modeled individually. (Note attached email from B. Sledge that will explain the background of the dischargers). Upon permit renewal, Western Justice requested that their limits be relaxed and be made equal to Blacksmith Run WWTP. Existing limits of Western Justice are tertiary(5/2/6)for protection of nearly zero flow stream situation caused by farmer irrigation. Blacksmith's limits were developed without the low flow situation as a concern and are based on oxygen consumption and NH3 toxicity(30/10(s) and 30/25 (w), no effluent DO limit). 1St modeling scenario- Both dischargers at existing limits. Historical headwater 7810 flow of 1.2 cfs was used at Western Justice, based on current information that the sandbagging of stream that caused zero/low flow conditions upstream are no longer in practice. Result: Instream DO of 6 mg/I is protected downstream, however stream profile indicates that NH3 toxicity criteria of 4.5 mg/I is exceeded instream below the Blacksmith Run discharge. 2"d scenario—Dischargers at equivalent limits(BODS=30,NH3 tox=10.8, DO =5). This is what Western Justice requested. Result: Instream DO of 6 mg/I is protected downstream, however stream profile indicates that NH3 toxicity criteria of 4.5 mFJI is still exceeded and is higher than in the scenario#1 Y model run., �rJ' 3'd scenario-\If Western Justice existing tertiary limits remain the same,there is still a problem instream with NH3. What must Blacksmith Run's's new NH3 limit be to protect instream NH3 toxicity? ` I If NH3 limitis reduced to 8 mg/I from the existing 10.8 mg/I. Result: Instream DO of 6 mg/I is protected yJ downstream, and NH3 toxicity criteria of 4.5 mA/1 is no longer exceeded downstream of Blacksmith Run. 4th scenario—If Western Justice and Blacksmith run are given equivalent limits that will protect both DO and NH3 toxicity? Limits of BODS =30 mg/I, NH3 tox= 6 mg/I (summer)and NH3 tox= 17 mg/I (winter)and no effluent DO limit. Western Justice limits will be less stringent and Blacksmith Run must have a more stringent s&w NH3 limits. Recommend that scenarios 3&4 be evaluated with the recognition that that Lewis Creek is on impaired stream list for biological integrity and EPA's review of the permit renewal. At the minimum, Blacksmith Run's existing NH3 limits need to be re-evaluated. 6/1/2011 IWC Calculations Western Justice Academy WWTP Assume upstream TRC level =0 NCO086072 Assume upstream Fecal level =0 Prepared BY: RLG Check Box if WTP Facility ❑ Enter Design Flow(MGD): 0.010 Enter Upstream NH3-N Level(mg/L): L Enter s7Q10(cfs): 1.200 Enter w7Q10 cfs : 1.900 Total Residual Chlorine Ammonia(NH3 as N) Daily MAX (summer) 35.0 mg/L 7010(CFS) 1.2 7Q10(CFS) 1.2 DESIGN FLOW(MGD) 0.01 DESIGN FLOW(MGD) 0.01 DESIGN FLOW (CFS) 0.0155 DESIGN FLOW(CFS) 0.0155 STREAM STD(UG/L) 17.0 STREAM STD(MG/L) IVAI UPS BACKGROUND LEVEL(1 0 UPS BACKGROUND LEVEL(1 0.220 IWC(%) 1.28 IWC(%) 1.28 Allowable Conc.(ug/1) 28 Allowable Conc.(mg/1) NOT REQUIRED Ammonia(NH3 as N) (winter) 7Q10(CFS) 1.9 Fecal Limit 200/100ml DESIGN FLOW (MGD) 0.01 (If DF>331;Monitor) DESIGN FLOW (CFS) 0.0155 (If DF<331;Limit) STREAM STD(MG/L) 9.02 Dilution Factor(DF) 78.42 UPS BACKGROUND LEVEL(I 0.220 IWC(%) 0.81 Allowable Conc.(mg/1) NOT REQUIRED 6/1/2011 / Do V�w rp N Q F 2 O `y M g t aA Cy Ilk x U _ A r y31c � •o � ,.. � � � aHS wpqzaE rz. U U A s 016 r N Q, a A E d v 2 m n �& > > CL c U lot o �C Yco OD CD Z p CC7 U O N O T m O C m a i r O Q Z '0 m O tp tw Cp , to m z = � a` z 8 � � � U � = o � co «� LD � gg e� o oU O Z G.�t, �i 3 U .. c�" a wwa r� �1A � U a; U &0 UaCc� ci U .9 10, 10 Nl� to fo P' ,y\� Qu1� 0.03M6� t i' 2 I r �i ..•- i _� d ��/ y � _ - -- Y �/ � �� ' 'y�f V 9,� /� � �� �y AIC Gf 0A-A�a� t f ti VAO AI-O-j A.�Z vi ZIP— v � 41twi. �[r L wi (3cyt-3.5' - y6� t�f�peszz et 1 -- .11 103 40, N40 ode 03 V\�� if /e 1 1 0.30 7 .58 3 .39 2 .52 1.32 , 1 1 0.35 7 .57 3 .35 2 .48 1.33 1 1 0 .40 7 .57 3 .32 2 .44 1.35 1 1 0.45 7 .57 3 .29 2 .41 1.36 1 1 0.50 7 .56 3 .25 2 .37 1.37 1 2 0.50 7 .33 7 .07 6 .54 1.51 1 2 0.60 7 .25 6 .91 6 .35 1 .53 1 2 0 .70 7 .19 6 .76 6 .16 1 .56 1 2 0 .80 7 .13 6.61 5 .99 1.58 1 2 0.90 7 .08 6 .46 5 .81 1.61 1 2 1.00 7 .04 6 .32 5 .65 1 .63 1 2 1.10 7 .01 6.19 5 .49 1 .66 1 2 1.20 6.99 6.06 5 .34 1 .68 1 2 1 .30 6.97 5.93 5 .19 1.71 1 2 1 .40 6.95 5.81 5.05 1.73 1 2 1.50 6.94 5.69 4 .91 1.76 1 2 1.60 6.93 5.58 4 .78 1.78 1 2 1.70 6.93 5 .47 4.65 1.81 Seg # Reach # Seg Mi D.O. CBOD NBOD Flow 1 1 0 .00 7 .62 3 .60 2 .75 1.25 1 1 0.05 7 .61 3 .57 2 .71 1.26 1 1 0 . 10 7 .60 3 .53 2 .67 1.27 1 1 0 .15 7 .59 3 .49 2 .63 1 .28 1 1 0 .20 7 .59 3 .46 2 .59 1 .30 1 1 0 .25 7 .58 3 .42 2 .55 1.31 1 1 0 .30 7 .58 3 .39 2 .52 1.32 1 1 0 .35 7 .57 3 .35 2 .48 1.33 1 1 0.40 7 .57 3 .32 2 .44 1 .35 1 1 0 .45 7 .57 3 .29 2 .41 1.36 1 1 0 .50 7 .56 3 .25 2 .37 1.37 1 2 0.50 7 .33 7 .07 6 .54 1.51 1 2 0.60 7 .25 6 .91 6 .35 1.53 1 2 0.70 7 .19 6 .76 6 .16 1.56 1 2 0 . 80 7 .13 6 .61 5 .99 1.58 1 2 0 .90 7 .08 6 .46 5 .81 1. 61 1 2 1.00 7 .04 6 .32 5 .65 1.63 1 2 1 .10 7 .01 6 .19 5 .49 1.66 1 2 1 .20 6 .99 6 .06 5 .34 1.68 1 2 1.30 6 .97 5 .93 5 .19 1.71 1 2 1.40 6 .95 5 .81 5 .05 1.73 1 2 1.50 6 .94 5 .69 4 .91 1. 76 1 2 1.60 6 .93 5 .58 4 .78 1.78 1 2 1.70 6 .93 5 .47 4 .65 1.81 Seg # Reach # Seg Mi D.O. CBOD i NBOD Flow 1 1 0 .00 7.62 3 .60 2 .75 1.25 1 1 0 .05 7 .61 3 .57 2 .71 1.26 1 1 0 .10 7 .60 3 .53 2 .67 1.27 1 1 0 .15 7 .59 3 .49 2 .63 1.28 1 1 0 .20 7.59 3 .46 2 .59 1.30 1 1 0 .25 7 .58 3 .42 2 .55 1.31 1 1 0 .30 7 .58 3 .39 2 .52 1.32 1 1 0 .35 7.57 3 .35 2 .48 1.33 1 1 0 .40 7.57 3 .32 2 .44 1 .35 1 1 0.45 7.57 3 .29 2 .41 1 .36 1 1 0 .50 7 .56 3 .25 2 .37 1.37 1 2 0.50 7 .33 7 .07 6.54 1.51 1 2 0 .60 7 .25 6 .91 6.35 1.53 1 2 0.70 7.19 6.76 6.16 1.56 1 2 0.80 7.13 6 .61 5.99 1 .58 1 2 0 .90 7.08 6 .46 5 .81 1.61 • SUMMER LEWIS CR DISCH. W/ EXISTING' LIMITS ---------- MODEL RESULTS ---------- ischarger : WESTERN JUSTICE ACADEMY eceiving Stream : LEWIS CREEK ------------------------ he End D.O. is- 7.00 Mg/1- be End CBOD is 4.67 mg/1. 'he End NBOD is 3.89 Mg/l. --- .---------------- WLA WLA WLA CBOD NBOD DO Waste Flow DO Min Reach # (m9/1 ( /1) (mg/1) mgd) (mg/1) Milepoint ---------- -- --------- ------- ----) - -- 3egment 1 ;x.95 1.10 2 5.00 0.03000 7.50 9.00 Reach 1 45.00 48.00 0.00 0.08900 Reach 2 *** MODEL SUMMARY DATA *** Discharger : WESTERN JUSTICE ACADEMY Subbasin 040302 Receiving Stream : LEWIS CREEK Stream Class: C TR Summer 7Q10 : 1.2 Winter 7Q10 1.8 Design Temperature: 23.0 ILKd Ka Ka mile ( ft/mil VELfpsTY l DEPTH idesignl X20° ldesignl X20° IdeK' I -------------------------------------------------------------------------------- Segment 1 0.50 6.40 0.129 0.82 0.26 0.23 1.58 1.48 0.38 Reach 1 -------------------------------------------------------------------------------- Segment 1 1.20 6.40 0.144 0.88 0.26 0.23 1.77 1.65 0.38 Reach 2 -------------------------------------------------------------------------------- l w cfsl mg/l l m9'/1 l mg/1 I Segment 1 Reach 1 Waste 0.046 7.500 9.000 5.000 Headwaters 1.200 2 .000 1.000 7.720 Tributary 0.000 2 .000 1.000 7.720 * Runoff 0.250 2 .000 1.000 7.720 Segment 1 Reach 2 Waste 0.138 45.000 48.000 0.000 Tributary 0.000 2.000 1.000 7.720 * Runoff 0.250 2.000 1.000 7.720 * Runoff flow is in cfs/mile SUMMER LEWIS CR DISCH. W/ EXISTING LIMITS Seg # Reach # Seg Mi D.O. CBOD NBOD Flow 1 1 0 . 00 7 . 62 2 . 21 1 . 30 1 . 25 1 1 0 . 05 7 . 63 2 . 19 1 .28 1 . 26 1 1 0 . 10 7 . 64 2 .17 1 . 27 1 . 27 1 1 0 . 15 7 . 65 2 . 16 1 . 26 1 .28 1 1 0 . 20 7 . 66 2 . 14 1 .24 1 . 30 1 1 0 . 25 7 . 67 2 . 13 1 .23 1 . 31 1 1 0 . 30 7 . 68 2 . 12 1 . 22 1 . 32 1 1 0 . 35 7 . 69 2 . 10 1 .20 1 . 33 1 1 0 .40 7 . 70 2 . 09 1 . 19 1 . 35 1 1 0 .45 7 . 71 2 . 07 1 . 18 1 .36 1 1 0 . 50 7 . 72 2 .06 1 . 17 1 .37 1 2 0 . 50 7 . 02 5 . 98 5 .45 1 . 51 1 2 0 . 60 6 . 99 5 . 85 5 . 29 1 . 53 1 2 0 . 70 6 . 98 5 . 73 5 . 14 1 . 56 1 2 0 . 80 6 . 97 5 .61 4 . 99 1 . 58 1 2 0 . 90 6 . 96 5 .49 4 .85 1 . 61 1 2 1 . 00 6 . 95 5 .37 4 . 71 1 . 63 1 2 1 . 10 6 . 95 5 . 26 4 .58 1 . 66 1 2 1 . 20 6 . 96 5 . 16 4 .46 1 . 68 1 2 1 .30 6 . 96 5 . 05 4 .34 1 . 71 1 2 1 .40 6 . 97 4 . 96 4 .22 1 . 73 1 2 1 . 50 6 . 98 4 . 86 4 . 11 1 . 76 1 2 1 . 60 6 . 99 4 . 77 4 . 00 1 . 78 1 2 1 . 70 7 . 00 4 . 67 3 . 89 1 . 81 Seg # Reach # Seg Mi D.O. CBOD NBOD Flow • SUMMER LEWIS CR. DISCH W/ EQUIV LMTS & LOWER NH3 LMTS TO MEET TOX ---------- MODEL RESULTS ---------- Discharger : WESTERN JUSTICE ACADEMY Receiving Stream : LEWIS CREEK ----------- --------------------------------------- -- ------ - ----------- The End D.O. is 7 . 01 mg/1 . The End CBOD is 5 .47 mg/l . The End NBOD is 2 . 84 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 6 . 82 0 .50 2 Reach 1 45 . 00 26 . 00 0 .00 0 . 03000 Reach 2 45 . 00 26 .00 0 .00 0 . 08900 N►�3 " � pA *** MODEL SUMMARY DATA *** Discharger : WESTERN JUSTICE ACADEMY Subbasin 040302 Receiving Stream : LEWIS CREEK Stream Class: C TR Summer 7Q10 : 1.2 Winter 7Q10 1.8 Design Temperature: 23.0 ILi t% El ` ELI DiKao fps ft Iesgnl X20Iignl X20mile IdeKN ------------ ----------------------------------------------------------- Segment 1 0.50 6.40 0.129 0.82 0.26 0.23 1.58 1.48 0.38 Reach 1 -------------------------------------------------------------------------------- Segment 1 1.20 6 .40 0.144 0.88 0.26 0.23 1.77 1.65 0.38 Reach 2 -------------------------------------------------------------------------------- Z I cfsFlow CBOD I mg/1 I m9/l I mg/l I Segment 1 Reach 1 Waste 0.046 45.000 26.000 0 .000 Headwaters 1.200 2 .000 1.000 7 .720 Tributary 0.000 2 .000 1.000 7 .720 * Runoff 0.250 2 .000 1.000 7 .720 Segment 1 Reach 2 Waste 0.138 1 45.000 26.000 0.000 Tributary 0.000 2.000 1.000 7.720 * Runoff 0.250 2 .000 1.000 7 .720 *, Runoff flow is in cfs/mile SUMMER LEWIS CR. DISCH W/ EQUIV LMTS & LOWER NH3 LMTS TO MEET TOX Seg # Reach # Seg Mi D.O. CBOD NBOD Flow 1 1 0.00 7.43 3.60 1.93 1.25 1 1 0.05 7.44 3.57 1.91 1.26 1 1 0.10 7.45 3 .53 1.88 1.27 1 1 0.15 7.45 3.49 1.85 1.28 1 1 0.20 7.46 3.46 1.83 1.30 1. 1 . 0.25 7.47 3 .42 1.81 1.31 1 1 0.30 7.47 3 .39 1.78 1.32 1 1 0.35 7.48 3.35 1.76 1.33 1 1 0.40 7.49 3 .32 1.74 1.35 1 1 0.45 7.49 3 .29 1.71 1.36 1 1 0.50 7.50 3.25 1.69 1.37 1 2 0.50 6.82 7.07 3.91 1.51 1 2 0.60 6.82 6.91 3.80 1.53 1 2 0.70 6.83 6.76 3.70 1.56 1 2 0.80 6.84 6.61 3.60 1.58 1 2 0.90 6.86 6.46 3.50 1.61 1 2 1.00 6.87 6.32 3.41 1.63 1 2 1.10 6.89 6.19 3.32 1.66 1 2 1.20 6.91 6.06 3.23 1.68 1 2 1.30 6.93 5.93 3.15 1.71 1 2 1.40 6.95 5.81 3.07 1.73 1 2 1.50 6.97 5.69 2.99 1.76 1 2 1.60 6.99 5.58 2.91 1.78 1 2 1.70 7.01 5.47 2.84 1.81 Seg # Reach # Seg Mi D.O. CBOD NBOD Flow • tWINTER- LEWIS CR. DISCH. W/ EQUIV LMTS & LOWER NH3 FOR TOX (WINTER) -- ---------- MODEL RESULTS ---------- Discharger : WESTERN JUSTICE ACADEMY Receiving Stream : LEWIS CREEK ---------------------------------------------------------------------- The End D.O. is 9.50 mg/l. The End CBOD is 4.56 mg/1. The End NBOD is 5.69 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 9.06 0.50 2 Reach 1 45.00 76.50 0.00 0.03000 Reach 2 45.00 76.50 0.00 0.08900 N�� *** MODEL SUMMARY DATA *** Discharger : WESTERN JUSTICE ACADEMY Subbasin 040302 Receiving Stream : LEWIS CREEK Stream Class: C TR Summer 7Q10 : 1.2 Winter 7Q10 1.8 Design Temperature: 12.0 ILmile I ft/miI VELOCITY fI DEPTH IdeVign.l X20° Idesignl @200 IdesignKd Ka Ka l ------------ ----------------------------------------------------------- Segment 1 0.50 6.40 0.174 0.87 0.16 0.24 1.68 2.00 0.16 Reach 1 -------------------------------------------------------------------------------- Segment 1 1.20 6.40 0.193 0.92 0.16 0.24 1.87 2 .23 0.16 Reach 2 -------------------------------------------------------------------------------- IFlo cfsw I mg/1 I Mg/1 I mg/l I Segment 1 Reach 1 Waste 0.046 45 .000 76.500 0.000 Headwaters 1.800 2 .000 1.000 9.700 Tributary 0.000 2 .000 1.000 9.700 * Runoff 0.440 2 .000 1.000 9.700 Segment 1 Reach 2 Waste 0.138 1 45.000 76.500 0.000 Tributary 0 .000 2 .000 1.000 9.700 * Runoff 0 .440 2.000 1.000 9.700 * Runoff flow is in cfs/mile WINTER LEWIS CR. DISCH. W/ EQUIV LMTS & LOWER NH3 FOR TOX (WINTER) Seg # Reach # Seg Mi ( D.O. CBOD NBOD Flow 1 1 0.00 9.46 3.08 2 .90 1.85 1 1 0.05 9.48 3.06 2.87 1.87 1 1 0.10 9.50 3.04 2 .84 1.89 1 1 0.15 9.53 3.02 2.81 1.91 1 1 0.20 9.55 3.00 2.78 1.93 1 1 0.25 9.57 2.98 2.76 1.96 1 1 0.30 9.59 2.96 2.73 1.98 1 1 0.35 9.61 2.94 2.70 2.00 1 1 0.40 9.63 2.92 2.68 2.02 1 1 0.45 9.65 2.90 2.65 2 .04 1 1 0.50 9.67 2.89 2.62 2 .07 1 2 0.50 9.06 5.52 7.25 2.20 1 2 0.60 9.11 5.42 7.09 2.25 1 2 0.70 9.15 5.33 6.94 2.29 1 2 0.80 9.20 5.24 6.79 2 .34 1 2 0.90 9.24 5.15 6.65 2.38 1 2 1.00 9.28 5.07 6.51 2.42 1 2 1.10 9.31 4.99 6.38 2.47 1 2 1.20 9.35 4.91 6.26 2.51 1 2 1.30 9.38 4.84 6.13 2.56 1 2 1.40 9.41 4.76 6.02 2.60 1 2 1.50 9.44 4.69 5.90 2 .64 1 2 1.60 9.47 4.63 5.79 2.69 1 2 1.70 9.50 4.56 5.69 2.73 Seg # Reach # Seg Mi D.O. CBOD NBOD Flow • Western Justice Academy Residual Chlorine Ammonia as NH3 (summer) 7Q10(CFS) 1.2 7010(CFS) 1.2 DESIGN FLOW(MGD) 0.03 DESIGN FLOW(MGD) 0.03 DESIGN FLOW(CFS) 0.0465 DESIGN FLOW(CFS) 0.0465 STREAM STD(UG/L) 17.0 STREAM STD(MG/L) 1.0 UPS BACKGROUND LEVEL(l 0 UPS BACKGROUND LEVEL 0.22 IWC(%) 3.73 IWC(%) 3.73 Allowable Concentration(ugj 455.71 Allowable Concentration(m 21.13 Ammonia as NH3 (winter) 7Q10(CFS) 1.8 Fecal Limit 200/100ml DESIGN FLOW(MGD) 0.03 Ratio of 25.8 :1 DESIGN FLOW(CFS) 0.0465 STREAM STD(MG/L) 1.8 UPS BACKGROUND LEVEL 0.22 IWC(%) 2.52 Allowable Concentration(m 62.96 NCO086070 12/1/2010 ` Lewis Creek dischargers WWTP Residual Chlorine Ammonia as NH3 (summer) 7010(CFS) 1.2 7010(CFS) 1.2 DESIGN FLOW(MGD) 0.119 DESIGN FLOW(MGD) 0.119 DESIGN FLOW(CFS) 0.18445 DESIGN FLOW(CFS) 0.18445 STREAM STD(UG/L) 17.0 STREAM STD(MG/L) 1.0 UPS BACKGROUND LEVEL(1 0 UPS BACKGROUND LEVEL 0.22 IWC(%) 13.32 IWC(%) 13.32 Allowable Concentration(up 127.60 Allowable Concentration(m 6.07 Ammonia as NH3 (winter) 7010(CFS) 1.8 Fecal Limit 2001100ml DESIGN FLOW(MGD) 0.119 Ratio of 6.51 DESIGN FLOW(CFS) 0.18445 STREAM STD(MG/L) 1.8 UPS BACKGROUND LEVEL 0.22 IWC(%) 9.29 Allowable Concentration(m 17.22 NC0086070 and NC0088056 12/3/2010