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HomeMy WebLinkAboutNC0020567_Wasteload Allocation_19930524NPDE S DOCUWENT SCANNIMS COVER SHEET NPDES Permit: NC0020567 Elkin WWTP Document Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) Permit Modification Speculative Limits Correspondence Re: Instream Assessment (67B) Environmental Assessment (EA) Permit History Document Date: May 24, 1993 M%Iga document I= priRItea o2 uae paper. - iJP2-orc any content orx the re-sreree Bide NPDES WASTE LOAD ALLOCATION PERMIT NO.: NCO0205 b7 PERMIZTEE NAME: Town of Elkin FACILITY NAME: Town of Elkin WWTP Facility Status: Existing Permit Status: Renewal Major Minor Pipe No.: 001 Design Capacity: d$? MGD �, C� M4 r) Domestic (% of Flow): 100 % Industrial (% of Flow): 0 % Comments: expand to 1.0 MGD once facilities are constructed. The construction is scheduled to be complete in Sel2tember of 1993. They have been dr oppe-�- prc, arc u•rYc ►.-� vu, RECEIVING STREAM: the Yadkin River Class: C Sub -Basin: 03-07-02 Reference USGS Quad: C15NE (please attach) County: Ste' Regional Office: Winston-Salem Regional Office Previous Exp. Date: 9/30/93 Treatment Plant Class: Class 2 Classification changes within three miles: No change in class. Requested by: Sean Goris Date: 3/30/93 Prepared by: / Date: 5 zt u. � i Reviewed by:Cl/tc (� iMrr�� Date: 5 a S3 Lbw «5 CSIWI ��� Modeler Date Rec. #. SA-u} 3 -�so q3 730 2 �'I 4 Drainage Area (mi ) Oo7 �) Avg. Streamflow (cfs): / 00 7Q10 (cfs) t7 Winter7Q10 (cfs) +C,;;,+ 30Q2 (cfs) Toxicity Limits: IWC —4 ut % Acronic Instream Monitoring: bc-5o y++% Parameters Upstream Location Downstream Location Effluent Characteristics Summer Winter BOD5 (mg/1) 30 3� NH3-N (mom) D.O. (mg/1) TSS (mg/1) 30 3U F. Col. (/100 ml) pH (SU) _ Comments: NPDES WASTE LOAD ALLOCATION PERMIT NO.: NCO020567 PERMITTEE NAME. Town of Elkin FACILITY NAME: Town of Elkin WWTP Facility Status: Existing Permit Status: Modification Major Minor Pipe No.: 001 Design Capacity: 1.0 MGD Domestic (% of Flow): 100 % Industrial (% of Flow): 0 % Comments: scheduled to be complete in September of 1993. They have been dropper pM Frt- fYff.+%o- wr,-G 1^e, L KO gi Wi �," indvb+'ric�_ VSarS . RECEIVING STREAM: the Yadkin River Class:. C Sub -Basin: 03-07-02 Reference USGS Quad: C15NE (please attach) County: Ste' Regional Office:_ Winston-Salem Regional Office Previous Exp. Date: 9/30/93 Treatment Plant Class: Class 2 Classification changes within three miles: No change in class. Requested by: Sean Goris Date: 3/30/93 Prepared by: Date: 5 u A 3 r Reviewed by: Lc�,�_ �ti _ ���. (�,1,y ? Date: rq3 Modeler # SP, End 739 ( 0d; Drainage Area (mi 2) Ig 1 4;, Avg. Streamflow (cfs): 7Q10 (cfs) 1-7 Winter 7Q10 (cfs) 30Q2 (cfs) Toxicity Limits: IWC • 41 % Acut�,Chronic Instream Monitoring: Lc50 7 -m ?a Parameters Upstream Location Downstream Location Effluent Characteristics Summer Winter BOD5 (m ) 30 -3d NH3-N (mg/1) D.O. (mg/l) TSS (mg/1) 3o 30 F. Col. (/100 ml) 2_00 Zot, pH (SU) _ LeAP It(oN11of- k013tTvie- iijE Z0 2113 Comments: RECEIVED FACT SHEET FOR WASTELOAD ALLOCATION N.C. kept. Of EH1\IR Facility Name: Elkin WWTP NPDES No.: NCO020567 Type of Waste: Domestic - 100% Facility Status: Existing Permit Status: Renewal Receiving Stream: Yadkin River Stream Classification: C Subbasin: 030702 County: Surry Regional Office: WSRO Requestor: S. Goris Date of Request: 3/30/93 Topo Quad: C15NE MAY 1 4 j993 Request # 7381 _6 Wins-'t: rj-S,:je.M Regional office Stream Characteristic: USGS # Date: Drainage Area (mi2): Summer 7Q10 (cfs): Winter 7Q10 (cfs): Average Flow (cfs): 30Q2 (cfs): IWC (%): 878 317 454 1400 0.49 69 1 M4 v) Wasteload Allocation Summary (approach taken, correspondence with region, EPA, etc.) Elkin plans to upgrade from 0.9MGD to 1 MGD. Previous permit gave limits for both of these flows. TSB recommends the same limits again. However, the pretreatment program has been dropped and the facility currently has no SIU's. Metals monitoring will not be required. The facility has had 4 flow violations and 1 BOD5 violation. Toxicity tests have showed no acute toxicity for the past four years. Elkin is not required to perform instream monitoring. A fecal coliform limit was not recommended at the 0.9 MGD flow, but the facility plans chlor/dechlor with the expansion to 1.0 MGD. Special Schedule Requirements and additional comments from Reviewers: �r��/]WMEWAK Recommended by: Zmo-w !�w jittn'- Dater s 5 Reviewed by Instream Assessment: (L1lt (!c._. Csj N _Date: Regional Supervisor: Date: s—� 5— Permits & Engineering: Date:�3 RETURN TO TECHNICAL SERVICES BY: JUN 0 6 1993 2 CONVENTIONAL PARAMETERS Existin s Limi Monthly Average Monthly Average Summer Winter Summer Winter Wasteflow (MGD): 0.9 0.9 1.0 1.0 BOD5 (mg/1): 30 30 30 30 NH3N (mg/1): DO (mg/1): TSS (mg/1): 30 30 30 30 Fecal Col. (/100 ml): 200 200 PH (SU): 6-9 6-9 6-9 6-9 Residual Chlorine (µg/1): 28 28 Toxicity testing: Qtrly Acute LC50>44% Qtrly Acute LC50>49% TP (mg/1): TN (mg/1): Recommended Limits: Monthly Average Monthly Average Summer Winter WQ or EL Summer Winter Wasteflow (MGD): 0.9 0.9 1.0 1.0 BOD5 (mg/1): 30 30 30 30 NH3N (mg/1): DO (mg/1): TSS (mg/1): 30 30 30 30 Fecal Col. (/100 ml): 200 200 PH (SU): 6-9 6-9 6-9 6-9 Residual Chlorine (µg/1): 28 28 Toxicity testing: Qtrly Acute LC50>44% Qtrly Acute LC50>49% TP (mg/1): TN (mg/1): ( Moo I Top- f�qx LEA i>) Limits Changes Due To: Change in 7Q10 data Change in stream classification Relocation of discharge Change in wasteflow Other (onsite toxicity study, interaction, etc.) Instream data New regulations/standards/procedures New facility information Parameter(s) Affected ( I -AP (K0nflT0XIfJq - _,jQQ FnR MATOO) 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. •o _X No parameters are water quality limited, but this discharge may affect future allocations. 3 INSTREAM MONITORING REQUIREMENTS Upstream Location: Downstream Location: Parameters: Special instream monitoring locations or monitoring frequencies: MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS Adcquacy of Existing Treatment Has the facility demonstrated the ability to meet the proposed new limits with existing treatment facilities? Yes No _ t' 1 If no, which parameters cannot be met? Would a "phasing in" of the new limits be appropriate? Yes No -X 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) _N (Y or N) (If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old assumptions that were made, and description of how it fits into basinwide plan) Additional Information attached? _N (Y or N) If yes, explain with attachments. AT- a m4p Facility Name 6*114 W WTP Permit # Ncx2o56? Pipe # ACUTE TOXICITY PERMIT LIMIT (QRTRLY) The permittee shall conduct acute toxicity tests on a quarter basis using protocols defined as definitive in E.P.A. Document 600/4-85/013 entitled "The Acute Toxicity of Effluents to Freshwater and Marine Organisms." The monitoring shall be performed as a Daphnia pulex or Ceriodanhnia 48 hour static test, using effluent collected as a 24 hour composite. The LC50 of this effluent using the previously stated methodology may at no time in any toxicity test be less than %. Effluent samples for self -monitoring purposes must be obtained during representative effluent discharge below all waste treatment. The first test will be performed after thirty days from the effective date of this permit during the months of Mhx 1 .1 u n>, SEEP . Dec The parameter code for this test if using Daphnia palsx is TAA3D. The parameter code for this test if using Ceriodaphnia is TAA3B. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the appropriate parameter code. Additionally, DEM Form AT-1 (original) is to be sent to the following address: Attention: Environmental Sciences Branch North Carolina Division of Environmental Management 4401 Reedy Creek Road Raleigh, N.C. 27607 Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will revert to quarterly in the months specified above. Should any test data from either these monitoring requirements or tests performed by the North Carolina Division of Environmental Management indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival and appropriate environmental controls, shall constitute an invalid test and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute noncompliance with monitoring requirements. 7Q10 30 cfs Permitted Flow n . 4 MGD IWC 0.44 % Basin & Sub -basin 030702 (Twoz�L_ Receiving Stream , %*W twee_ County Vvo*� Recommended by::��� �f • V[x64t Date '� /5 /43 QAL Daphnid 48 Version 10191 AT I MCt P Facility Name Permit # A)C0020G&7 Pipe # ACUTE TOXICITY PERMIT LIMIT (QRTRLY) The permittee shall conduct acute toxicity tests on a qua_rw_rjX basis using protocols defined as defmitive in E.P.A. Document 600/4-85/013 entitled "The Acute Toxicity of Effluents to Freshwater and Marine Organisms." The monitoring shall be performed as a Daphnia pulex or Ceriodaphnia 48 hour static test, using effluent collected as a 24 hour composite. The LC50 of this effluent using the previously stated methodology may at no time in any toxicity test be less than-&%. Effluent samples for self -monitoring purposes must be obtained during representative effluent discharge below all waste treatment. The first test will be performed after thiM d= from the effective date of this permit during the months of Q I Tk nl The parameter code for this test if using Daphnia ]nu ex is TAA3D. The parameter code for this test if using Ceriodaphnia is TAA3B. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the appropriate parameter code. Additionally, DEM Form AT-1 (original) is to be sent to the following address: Attention: Environmental Sciences Branch North Carolina Division of Environmental Management 4401 Reedy Creek Road Raleigh, N.C. 27607 Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will revert to quarterly in the months specified above. Should any test data from either these monitoring requirements or tests performed by the North Carolina Division of Environmental Management indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitorine reauirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival and appropriate environmental controls, shall constitute an invalid test and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute noncompliance with monitoring requirements. 7Q10 31-7 cfs Permitted Flow ! - MGD IWC 0.41 % Basin & Sub -basin o3o7n2 yami) Receiving Stream Acw-W Ro def- County SuCA6 Recommended by: .ZX4631e I. &Ae� Date S . QAL Daphnid 48 Version 10191 ­11­.­..1 1 1 ­(., allf 1.1, l'),13 AC11.1 I Y NJ; .17-mu; n I ary wwri, PERM AC IJM: I -050 (DAM I OR CI:Rlo) N(:(X)750Il Itcgin:l I/ol/w/ 1-*,vl-.,Y: Q DEC MAR JUN S1:11 N(.,(, 89 12.7 CIII-I-IYA'ASQUO I'ANK I?cgi,,,,!WARO 90 NOW NR 91 15.2.NON ... '/Qlo: lo.00 I IN NOW 93 NONE —TON, 80.2 P35 NONE >90 NONE >90 >90 "�j E It,) F—I'mncy: MINI ('11-111VISURRY Q A MAR JUN Slill DVC N-C p: 90 NONI PF: 1.0 Region: WSRO S"I'lla.,in: YAIX)2 91 NONF 90 NOW NONE Speed. NONE' 90 ... 7QIO: 317.0 IWC0):0A9 0,lk,: 92 ;-90' NOW 90 — 03 >90' 00- Nrl NONE' 111;k1\1 CI ]R >90 0, I'mitterx:y: Q II/F JAN APR 111,11, O(�J' 119 I-XiN I All FRO YAD10 90 PASS PASS FAIL VU- (UH S1­0 91 1 All -A!::: PAN!; PASS PASS FAIL RHo nI-, IwUcc) ,,, (It ')',' I 'AY, ;'A';); I IAS! i I I AS S F. FRSON u I [-A:;*. I A SS PASS PERM AC 1,[M:.J()% N(.'(X)3!)XOZAX)2 F—Immy: Q A MAR JUN Slill DI;(_' N C"Unly:01FROKIT ... C.nip: Region: ARO slibb.t. in: 1 Win 90 PH:0.288 Sp ... I 91 - NOW >90 ... ... >90 7Q10: 88 IWC(%):0.5 07&r. 92 ... ... >90' �90' 90* >90 EIVIRO MARKHTING, 93 >90' �90' NONE- NC(Cl IR IAM:9076 (GRAN) >90' Ile in;M/Z3192 I-',.4_ncy: Q I'll: A FUIMAYALIGNOV M-IC'unp:single 89 ... ... C11-1-ty:WAYNE, R-gi ... : WARO Scibb..,in: NFL105 90 92 ENVIIA,J) W\Vl'l, 93 NR Nn NA ... ... NR --- INS 100 CI Ili I.Jm:Hx% ,\'C(X)25402 Beg il""MI/90 Fi-olluency: Q11W 89 ... NR A MAR JUN SI-11 I)J.'C N..(,o p: C"I'llLyA IAJAFAX Rcgi .... : RRO 90 Stillha-lin; TAR04 IT: 0.50Stxcul 1QI0: 0. 11 91 Nil 9P FAII ... FAIL ... NR NR FAIL NR NR NR NR 1:11SCOPAI, DJOCJ:SJ. It I All I Ali NR 1 All FAIL NR FAIL FAIL FAIL FAIL FAIL FAIL Nit NCCkxwlq PERM C1 IR L,IM;99%(GRAB), AMM IN 211/1)4. Bcgin:03101/91 FAIL FAIL ImcIttancy: A MAR JUN SUDEC NonC—ip. C",nlly: ROCKINGI JAM 90 R-gh :WSRO slihhuimcl,vol ... FAIL NR 7QIO: 0.0 IWC(96); 100.0 0,&-, 92 PASSNR NR FAIL NR FAIL FAIL NR FRWIN WWII' 93 PAIL PASS PASS NR FAIL NR FAIL w N8 PASS FAIL ITRM AC IAM:ffn ID) 241 IR p/l. @q(",,. NCW64521 PASS IMI—n 99": ... --- -ginn:FRO '*l3NAPRAJI,0:Inp: tl 00 . ... .-.-.COUTly!IIARN—TT Special ... - ... ... 7QIO: 856 IWC(%j! Onk,: 02 PASS[ PASS[ ... ... I'TOWA) I WWII' T1 17A'si PASSI PASSI PASSi PASS( IIF , RM (:I IR J.Jlf 1% NCW71323 lk0-:04/01/93 V_Ju.nLy: P/1" MA lit) ... ... Q A DEC Rlpl SJ:J, ll;Nl)]:Ii.';()N ARO 00 SIIIIIIA-Iin: 1-1002 0 1 �N tit 7010:(EON 1 W EXXON CO.-NI(I.MA 91 1'1� , RM:211 Ilk AC MONMIWIS U-71 ID) GRAII, It'Am-owolp)l 5 J)WDIA 111) CII,11dy:)0I INN I J IN Rct; ulzo Nilt N­C.unp 00 IIF: VAR Special .11 7QIO: 0 lwc:(%): I oo.() 011ie,: 92 93 pinin- Y Pm 1989 Data Avail.ble I.FGFND: l'nc9=nCY = McaniLfWing frcqUcrWy: Q_ Quar I- I)— c,il­i,,n (.,;fx) A (1,nnimly ...... ji-inK i,jcn,._x lu"'Y.',M' M`ntljy: RM' ",... lailinn A- Annually; OWJ)_ Only witen di3eJuirging. D- r 1;.Ilmlld INlinIll'.:_ chronic test KI,1­61% N­6 Cc,i,�bvl in mvfinv - M-41.0trinm: cl.V - Chr­i, AC A., 1. C1 I R CI M,.,Il. lhol 1­linv nmsl xur Disaxitinmd Dmiloriong Cwrn�.nincc requircnIent; IS- Q Wing iridtrxn&nt study ­1 M.,,:,l D.U. -1111n.d: NR II-gi injrQna, ilv oran'led Falitily Activity 1. Re,p,jr.n.nI I - IIHIlLil-c. N'. N­ly DI; M AnTo., Active J,kjI (;,nun: bt - 21 I­tJi,IeI,nrghig; f-")r, tlai;. avi,ilill,lu r­ n­.th in I'm i m­ SIG = ORCAguallmenaccled