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HomeMy WebLinkAboutNC0040011_Wasteload Allocation_19940517NPDES DOCUINENT SCANNING COVER SHEET NPDES Permit: NC0040011 Yanceyville WWTP Document Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) Permit Modification Complete File - Historical Engineering Alternatives (EAA) Correspondence Owner Name Change Instream Assessment (67b) Speculative Limits Environmental Assessment (EA) Document Date: May 17, 1994 Mims clbaciiiimeixt In priintecl. 021 1MBtILISIB 12/3113413X" •••• iggixax•e sarry canteitst au. the ire-sreinase isicle NPDES WASTE LOAD ALLOCATION PERMIT NO.: NC0040011 PERMITTEE NAME: FACILITY NAME: Town of Yanceyville Yanceyville WWTP Facility Status: Existing Permit Status: Renewal Major Minor Pipe No.: 001 Design Capacity: 0.45 MGD Domestic (% of Flow): 95 % Industrial (% of Flow): 5 % Comments: Plant expansion not yet completed, therefore, need WLA for 0.25 and 0.45 MGD. RECEIVING STREAM: Country Line Creek Class: C Sub -Basin: 03-02-04 Reference USGS Quad: B 21 NE County: Caswell (please attach) Regional Office: Winston-Salem Regional Office Previous Exp. Date: 3/31/94 Treatment Plant Class: Classification changes within three miles: Changes from Class WS-11 to Class C APPROXIMATELY 1 m e UPSTREAM. r 11 Requested by: Dana Bolden Prepared e0/1)7A- Reviewed by: ( fA1C(W /52.-35 L tO3 • u3c5LeL Date: 2/25/94 Date: 6 ji /9,1 Date: 51 /7 w/ Modeler Pt - Date Rec. Drainage Area: 49.4 m12 s7Q10: 1.2 cfs Type of Toxicity Test: Recommended Limit: Monitoring Schedule: Upstream Location: Downstream Location: Parameters: Wasteflow (MGD): B005 (mg/I): NH3N (mg/I): DO (mg/I): TSS (mg/I): Fecal Col. (/100 ml): pH (SU): Residual Chlorine (ji.WI): Oil & Grease (ng11): TP (mg/I): TN (mg/I): Monthly Average 0.25 30 monitor monitor 30 200 6 - 9 monitor nr monitor monitor 2,s15 Average Streamflow: 44 cfs w7Q10: 4.9 cfs 30Q2: 6.4 cfs Chronic (ceriodaphnia) Toxicity P / F 24 % for 0.25 mgd / 37 c/0 for 0.45 mgd January, April, July, and October at least 100' above outfall NC Highway 62 bridge Temperature, dissolved oxygen, fecal coliform, conductivity F005 71 fpn_ Monthly Average - Summer Winter 0.45 28 30 2.3 13 5.0 5.0 30 30 200 200 6 - 9 6 - 9 28.0 28.0 nr nr monitor monitor monitor monitor Daily Maximum Daily Max. Daily Max. Flow (MGD): 0.25 0.45 Cadmium (I.Lg/1): 8.2 5.4 Chromium (14/1): monitor [monthly] monitor [monthly] Copper (igA): monitor [monthly] monitor [monthly] Nickel (jig/1): nr nr Lead (nil): 102 68 Zinc (nil): monitor [monthly] monitor [monthly] Cyanide (j4/1): 20 14 Phenols (4g/1): nr nr Mercury (p.WI): 0.049 0.033 Silver (j.tglI): monitor [monthly] monitor [monthly] Arsenic (KA): monitor* monitor • * When facility receives a sludge permit and monitoring for these parameters are required in their LTMP, then they can send in a formal request to have the monitoring requirement dropped from their NPDES permit. There shall be no discharge of floating solids or visible foam in other than trace amounts. 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 Request # 7761 Town of Yanceyville WWTP NC0040011 Domestic - 95 % Industrial Existing Renewal Country Line Creek 03-02-04 Caswell Winston - Salem Bolden 2/28/94 B21NE - 5 % Stream Characteristic: USGS # Date: Drainage Area (m12): Summer 7Q10 (cfs): Winter 7Q10 (cfs): Average Flow (cfs): 30Q2 (cfs): IWC (%): RECEIVED N.C. Dept. of EHNR APR R 1994 Winston-Salem Regional Office 02.0752.1958 1990 49.4 1.2 4.9 44 6.4 36.8 % Wasteload Allocation Summary (approach taken, correspondence with region, EPA, etc.) .Request Region verify instream monitoring locations; downstream location in Permit is NC Highway 62 bridge. Instream monitoring reports indicate "100' downstream". Please note Arsenic monitoring requirement. When facility recieves sludge permit, ( and accompanying revised LTMP) they can request this NPDES monitoring requirement be dropped. Special Schedule Requirements and additional comments from Reviewers: Hui 6, 2 A .17. ..e. i9 -rt-v• J-r--ei--- ../ 0 0 / ----7 -cc) .44-A-1 k_o4.49 --- Recommended arra Keough 31 Date: 'ffit (YINRCii 114 Reviewed by Instream Assessment: 0(0-66,_,.kikdA.4_10-1,— Date: 4/6.° / e'l ' I Regional Supervisor: , j) aJ4-- Date: Y-2- - 7 Permits & Engineering: Date: 5-7?/ MAY 0 5 1994 RETURN TO TECHNICAL SERVICES BY: Existing Limits: Wasteflow (MGD): BOD5 (mg/1): NH3N (mg/1): DO (mg/1): TSS (mg/1): Fecal Col. (/100 ml): pH (SU): Residual Chlorine (W1): Oil & Grease (mg/1): 1? (mg/I): TN (mg/1): CONVENTIONAL PARAMETERS Monthly Average Summer Winter 0.25 30 monitor monitor 30 200 6 - 9 monitor nr monitor monitor Monthly Summer 0.45 28 2.3 5.0 30 200 6 - 9 28.0 nr monitor monitor Average Winter 30 13 5.0 30 200 6 - 9 28.0 (Da-Q. Otimi) nr monitor monitor The monthly average BOD5 concentration shall not exceed 35% of the respective influent value (65% removal). There shall be no discharge of floating solids or visible foam in other than trace amounts. Recommended Limits: Wastefiow (MGD): BOD5 (mg/1): NH3N (mg/1): DO (mg/1): TSS (mg/1): Fecal Col. (/100 ml): pH (SU): Residual Chlorine (tgA): Oil & Grease (mg/I): TP (nel): TN (me* Thp,m • is*y? „There sM11,k no It Monthly Average Summer Winter 0.25 30 monitor monitor 30 200 6 - 9 monitor nr monitor monitor OM cop tio harge\of floatin olids visib oam «er Monthly WQ/ FL Summer 0.45 EL 28 2.3 5.0 30 200 6 - 9 28.0 nr monitor monitor Limits Changes Due To: Parameter(s) Affected 0 of • influ unts. Average Winter WQ FEL 30 13 5.0 30 200 6 - 9, 28.000,9- nr monitor monitor WQ / EL WQ DO ue -moval). (explanation of any modifications to past modeling analysis including new flows, rates, field data, interacting discharges) (See page 4 for miscellaneous and special conditions, if applicable) Type of Toxicity Test: Existing Limit: Recommended Limit: Monitoring Schedule: Existing Limits Flow (MGD): Cadmium (141): Chromium (4/1): Copper (µg/l): Nickel (µW1): Lead (14/1): Zinc (gA): Cyanide (14/1): Phenols (14/1): Mercury (11g/1): Silver (µg/1): Arsenic (14/1): Recommended Limits Flow (MGD): Cadmium (Re): Chromium (4/1): Copper (p.gA): Nickel (p.gA): Lead (110): Zinc (14/1): Cyanide (µg/1): Phenols (14/1): Mercury 040: Silver (J.LgA): Arsenic (14/1): TOXICS/METALS Chronic (ceriodaphnia) Toxicity P / F 24 % for 0.25 mgd / 37 % for 0.45 mgd 24 % for 0.25 mgd / 37 % for 0.45 mgd January, April, July, and October Daily Max. 0.25 8.2 205 monitor 361 102 monitor 20 monitor 0.049 monitor monitor Daily Max. 0.45 5.4 136 monitor 239 68 monitor 14 monitor 0.033 monitor monitor Daily Max. 0.45 5.4 monitor [monthly] monitor [monthly] nr 68 monitor [monthly] 14 nr 0.033 monitor [monthly] monitor * * When facility receives a sludge permit and monitoring for these parameters are required in their LTMP, then they can send in a fonnal request to have the monitoring requirement dropped from their NPDES permit. Limits Changes: Chromium Copper, Zinc, Silver Phenols Arsenic Daily Max. 0.25 8.2 monitor [monthly] monitor [monthly] nr 102 monitor [monthly] 20 nr 0.049 monitor [monthly] monitor * WQ WQ WQ WQ WQ or EL WQ or EL WQ WQ WQ WQ monthly monitoring recommended due to predicted maximum levels just under the allowable levels -coy e b^- monthly monitoring recommended due to effluent levels in exceedence of Action Levels water body classification no longer calls for this monitoring new procedure of sharing data requirements with Pretreatment; refer asterix _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. Pre4-ta.4 mud Aj: 4th;11 pcwt at MAP -a Arsenic: these values are all below the limit requirement. Monitoring through the NPDES program will be required unless facility develops sludge monitoring program, in which case we can, (through written request) switch this monitoring to the Sludge Permit. Cadmium: influent data from Pretreatment indicates BDL values; but due to the predicted maximum from the current spreadsheet techniques a limit will be recommended. Pretreatment concurs. Chromium: the current toxics spreadsheet technique indicates that the predicted maximum concentration is just below the allowable, therefore no limit will be recommended; this parameter will be monitored through the NPDES Permit due to the need for additional data at renewal, (current SOP). Conversations with Pretreatment confirm they agree. Monthly monitoring will be recommended, based on our needs and Pretreatment recommendations. Copper: the current toxics spreadsheet technique indicates that the predicted maximum concentration is well above the allowable, therefore monitoring will be required through the NPDES Permit due to the need for additional data at renewal. (current SOP). Conversations with Pretreatment confirm they agree. Monthly monitoring will be recommended, based on our needs and Pretreatment recommendations. Cyanide: high values of this parameter will constitute a limit. Lead: influent data from Pretreatment indicates BDL values; but due to the predicted maximum from the current spreadsheet techniques a limit will be recommended. Pretreatment concurs. Mercury: due to high values in DMR's and information from Pretreatment, a limit will be required. Molybdenum: no requirement is currently applicable to this parameter, but facility should have a sludge permit and therefore monitoring will take place. Nickel: no limit will be required; we will obtain monitoring information through the LTMP Selenium: no requirement is currently applicable to this parameter, but facility should be receiving a sludge permit and therefore monitoring will take place. Silver: current spreadsheet techniques indicate that this parameter will show up well above the allowable action levels Monitoring through the NPDES Permit due to the need for additional data at renewal, (current SOP). Conversations with Pretreatment confirm they agree. Monthly monitoring will be recommended, based on our needs and Pretreatment recommendations. Zinc: the current toxics spreadsheet technique indicates that the predicted maximum concentration is well above the allowable, therefore monitoring will be required through the NPDES Permit due to the need for additional data at renewal, (current SOP). Conversations with Pretreatment confirm they agree. Monthly monitoring will be recommended, based on our needs and Pretreatment recommendations. Phenols: monitoring for this parameter was required due to the WS classification; since the waterbody is now C and DMR's indicated all BDL values, it will be dropped. Arsenic Cadmium Chromium Copper Cyanide Lead Nickel Mercury Silver Zinc Max. Pred. CW 8 23.4 135 111 67.2 358.8 -en z -11 302.4 453.6 621.6 Allowable CW 136 5.4 136 19 13.6 68 239.4 0.03 0.2 136 INSTREAM MONITORING REQUIREMENTS Upstream Location: at least 100' above outfall Downstream Location: NC Highway 62 bridge Parameters: Temperature, dissolved oxygen, fecal coliform, conductivity Special instream monitoring locations or monitoring frequencies: MISCELLANEOUS INFORMATION & SPECIAL CONDMONS Adequacy of Existing Treatment Has the facility demo9strated the ability to meet the proposed new limits with existing treatment facilities? Yes L/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 Yanceyville Waste Water Treatment Plant Permit # NC0040011 Pipe # 001 CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY) The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in: 1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay Procedure - Revised *September 1989) or subsequent versions. The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality is 24 % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform guarterkv monitoring using this procedure to establish compliance with the permit condition. The first test will be performed after thirty days from the effective date of this permit during the months of Jan., Apr., Jul., and Oct. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. 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 parameter code TGP3B. 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 this monitoring requirement 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 1.2 cfs Permitted Flow 0.25 MGD Recommended by: IWC 24 % Farrell Keough Basin & Sub -basin 03-02-04 Receiving Stream Country Line Creek County Caswell QCL PIF Version 9191 Date riaecti Ilf 4./ Facility Name Yanceyville Waste Water Treatment Plant Permit # NC0040011 Pipe # 001 CHRONIC TOXICITY PASS/FAH, PERMIT LIMIT (QRTRLY) The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in: 1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay Procedure - Revised *September 1989) or subsequent versions. The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality is 37 % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform quartertv monitoring using this procedure to establish compliance with the permit condition. The first test will be performed after thirty days from the effective date of this permit during the months of Jan., Apr., Jul., and Oct. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. 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 parameter code TGP3B. Additionally, DEM Fonn 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 this monitoring requirement 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 1.2 cfs Permitted Flow 0.45 MGD Recommended b3t..------- 4.---,--- IWC 37 % Farrell Keou i Basin & Sub -basin 03-02-04 Receiving Stream Country Line Creek County Caswell Date 1 numr-Aft, vtiq QCL PIF Version 9191 Facility Name: Permit Number: Engineer: Subbasin: Receiving Stream: USGS quad #: Request Number: Date: Expiration date: Town of Yanceyville Waste Water Treatment Plant NC0040011 Bolden 03-02-04 Country Line Creek B21NE 7761 2/28/94 3/31/94 Existing WLA checked: Staff Report: Topo checked: USGS Flows confirmed: PIRF / APAMS: 1WC Spreadsheet: Stream Classification: Nutrient Sensitivity: Instream Data: nr Brief of WLA Analysis Previous MA's 1977: Received limits of 20 and 6 for a flow of 0.125 mgd. Discharge to Jail House Branch; a tributary to Country Line Creek. 1981: In -stream assessment based on influent / effluent efficiency and flow increase to 0.2 mgd. Modeling analysis of the Jail House Branch outfall indicated instream DO problems. New modeling analysis performed with correction in flow statistics from the 1977 model. Final WLA for flow increase recommended limits of 18 (21) and 7 (12) summer (winter) limits. A time of travel study accompanies this analysis; it addresses 'an enormous amount of algae' below the outfall of the oxidation pond. A second WLA was finalized in 1981 which included a proposal for the outfall to relocate to Country Line Creek. Limits recommended for Jail House Branch were 12 (16) and 2 (5), and those recommended for Country Line Creek were 30 / 30. 1982: Facility must have been struggling to meet SOC requirements, therefore numerous instream assessments took place with small incremental flow increases. Their discharge point to Jail House Branch created many documented DO problems, but no strong evidence of relocation existed to date in the WLA files. 1984: Facility relocated to Country Line Creek and with a discharge of 0.200 mgd the facility received 30 / 30 limits. 1986: Relocation of plant not yet complete. Various SOC's and instream assessments took place. 1988: Re -issued with existing limits; new flows requested 1989 - 90: Issues of NH3-N toxicity and the WS-III classification arose. 1991: Another proposed expansion was submitted; both ammonia and chlorine limits were expected by the facility for this expansion. Speculative was sent 8 / 91 for an expansion to 0.45 mgd; limits of 24 / 2.3 / 5 were recommended. Also, possible Pretreatment and waterbody reclassification, [from WS-111to C] were addressed. Finalized WLA was for 0.25 mgd with 30 / 30 limits and no Pretreatment. 1992: Two WLA's; for 0.24 mgd [with 30 / 30 limits] and one for the expansion to 0.45 mgd with a Pretreatment program added. Conversations with Pretreatment indicate that excessive metals requirements were placed on this facility due to use of their 'permitted loading' being applied to the PIRF. This will be looked into for this review. Also, letter in file indicates change in Nickel limit due to reclassification of waterbody to C. This facility is slated for expansion and upgrade by the end of 1994; at that time they will receive more stringent limits. They only have one SW, but have had trouble with their toxicants in the past due to them. A toxic spreadsheet analysis has been run on the DMR data submitted by the facility and the results are below. Pretreatment is aware of the problems encountered by this facility and is checking on them accordingly. Due to the extensive modeling and accompanying field calibration with these models, (i.e. velocities for that area were reasonably well defined), no further modeling for this renewal is necessary. Instream monitoring location verification necessary; WLA requires NC 62 bridge and report indicates 100' downstream [noted on Fact Sheet]. When the facility develops a sludge management program, they can write in for their Arsenic monitoring to be dropped from the NPDES Permit. Facility has only had a toxicity test requirement for approximately 1 1/2 yrs and is showing consistent passing. Arsenic: these values are all below the limit requirement. Monitoring through the NPDES program will be required unless facility develops sludge monitoring program, in which case we can, (through written request) switch this monitoring to the Sludge Permit. Cadmium: influent data from Pretreatment indicates BDL values; but due to the predicted maximum from the current spreadsheet techniques a limit will be recommended. Pretreatment concurs p 1)0...40L.T. wis vjav r-t 41- c) cAtt +- VW( a( J Chromium: the current toxics spreadsheet technique indicates that the predicted maximum concentration is just below the allowable, therefore no limit will be recommended; this parameter will be monitored through the NPDES Permit due to the need for additional data at renewal, (current SOP). Conversations with Pretreatment confirm they agree. Monthly monitoring will be recommended, based on our needs and Pretreatment recommendations. Copper: the current toxics spreadsheet technique indicates that the predicted maximum concentration is well above the allowable, therefore monitoring will be required through the NPDES Permit due to the need for additional data at renewal, (current SOP). Conversations with Pretreatment confirm they agree. Monthly monitoring will be recommended, based on our needs and Pretreatment recommendations. Cyanide: high values of this parameter will constitute a limit. Lead: influent data from Pretreatment indicates BDL values; but due to the predicted maximum from the current spreadsheet techniques a limit will be recommended. Pretreatment concurs. Po6e-Hig va.Loe ttXtre`14 gA+ tt. aktA; Mercury: due to high values in DMR's and information from Pretreatment, a limit will be required. Molybdenum: no requirement is currently applicable to this parameter, but facility should have a sludge permit and therefore monitoring will take place. Nickel: no limit will be required; we will obtain monitoring information through the LTMP Selenium: no requirement is currently applicable to this parameter, but facility should be receiving a sludge permit and therefore monitoring will take place. Silver: current spreadsheet techniques indicate that this parameter will show up well above the allowable action levels Monitoring through the NPDES Permit due to the need for additional data at renewal, (current SOP). Conversations with Pretreatment confirm they agree. Monthly monitoring will be recommended, based on our needs and Pretreatment recommendations. Zinc: the current toxics spreadsheet technique indicates that the predicted maximum concentration is well above the allowable, therefore monitoring will be required through the NPDES Permit due to the need for additional data at renewal, (current SOP). Conversations with Pretreatment confirm they agree. Monthly monitoring will be recommended, based on our needs and Pretreatment recommendations. Ui6 Arsenic Cadmium Chromium Copper Cyanide Lead Nickel Mercury Silver Zinc Max. Pred. CW 8 23.4 135 111 67.2 358.8 33 302.4 453.6 621.6 Allowable CW 136 5.4 136 19 13.6 68 239.4 0.03 0.2 136 LTMP / NPDES NPDES* NPDES NPDES NPDES** NPDES NPDES LTMP NPDES NPDES** NPDES** results of Toxics Spreadsheet ( 2 / 19 / 94 ) data attached * monitoring will be required in NPDES Permit until sludge monitoring program is developed by facility **monthly monitoring will be required in NPDES Permit due to the need for additional data at renewal. (current SOP) Phenols: monitoring for this parameter was required due to the WS classification; since the waterbody is now C and DMR's indicated all BDL values, it will be dropped. SI U's Parameters of Concern Classic Hosiery, Inc. Textile fibers [ bleach and dying process; 1991 Stf Rpt 1993 data [one yews worth of data only] i• , Facility Name - YanoeyvIlle WWTP ! Parameter - ]Arsenic Parameter- .6y-an-id-e----- NPDES 0 . NC0040011 ! Standard - i.._ SOLgIl Standard - 5141 Ow (MGD) - 1125 4 7010s (cfs)- 12 i n BDL-1/2DL Actual Data RESUL'TS n BDL-1 /2DL Actual Data RESULTS /WC (%) - 24.41 i 1 3 Std Dev. 1.17 1 5 • Std Dev. 6.373 2 2.5 • Mean 2.78 2 5 ' Mean 8.523 FINAL RESULTS 3 2.5 • C.V. 0.42 3 5 • C.V. 0.748 Arsenic 4 2.5 • 4 14 MaX. Pred Cw 8 5 5 5 5 Allowable Cw 204.8 6 4 • Mult Factor - 1.------ -1:61 6 5 • Mull Factor - 1-..-2:41 7 3 Max. Value 5 1g/1 7 5 Max. Value 28 Afill Cyanide 8 5 Max. Pred Cw 8 p.g/I 8 10 Max, Pred Cw 67.2 pgil Max. Pred Cw 672 9 0.005 Allowable Cw 204.8 nil 9 10 Allowable Cw 20.5 pg/I Allowable Cw 20.5 10 3.3 10 5 ' 11 2.5 • 11 5 Copper [AL] 12 2.5 • 12 0.024 Max. Pred Cw 111 13 2.5 • 13 0.016 Alowable Cw 28.7 14 2.5 • 14 12 15 1.5 • 15 16 Lead 16 2.5 • 16 10 Max. Pred Cw 358.8 17 2.5 • 17 20 Allowable Cw 102.4 18 18 11 19 19 13 Mercury 20 20 10 MEIX. Pred Cw 302.4 21 21 15 Allowable Cw 0.05 22 22 5 23 23 5 Nickel 24 24 5 Max. Pred Cw ,..16'qZ -1-1 25 25 5 Allowable Cw 360.5 26 26 5 27 27 0.16 Silver (AL) 28 28 20 Max. Pred Cw 453.6 29 29 28 Allowable Cw 02 30 30 5 31 31 5 Cadm km 32 32 Max. Pred Cw 23.4 33 33 Allowable Cw 82 34 34 35 35 Chromium 36 36 Max. Pred Cw 135 37 37 Allowable Cw 204.8 38 38 39 39 Zinc [AL] 40 ao MaX. Prod Cw 621.6 41 41 Allowable Cw 204.8 42 42 43 43 1993 data (one years worth of data only] Parameter- reeTp.periAll Standard- 1...............1 WI ••••••••M••••••=1.11 Parameter- iiiicu-ry--"-- Standard- .._..m. 9..0121140 n BDL.1/2DL Actual Data RESULTS n BOL=1/2DL Actual Data RESULTS n 13131..1/2DL Actual Data RESULTS 1 37 Stti Dev. 10.63 1 3 Std Dev. 14.39 1 0.1 • Ski Dev. 822 2 35 Mean 13.75 2 5 Mean 6.08 2 0.1 • Mean 2.52 3 17 C.V. 0.77 3 1 • C.V. 2.37 3 0.1 • C.V. 328 4 19 4 1 • 4 0.1 • 5 31 6 1 ' 5 0.1 • f.---..-..., 6 11 Mutt Fodor . I ai a 0.1 • Mutt Fedor = 1 521 6 42 Mutt Factor -LZ:112 7 13 Max. Value 37 pg/1 7 1 • Max. Value 69 pg/1 7 0.1 • Max. Value 42 141 8 6 Max. Pred Cw 111 pg4 8 1 • Max. Prod Om 358.8 NA 8 0.1 • Max. Prod CVI 302.4 WI 9 14 Allowable Cw 28.7 pg4 9 1 • Allowable Cw 102.4 jag/1 9 0.1 • Allowable Cw 0.0 pg4 10 2.5 • 10 1 • 10 0.1 • 11 9 11 3 11 0.1 • 12 8 12 3 12 0.1 • 13 14 13 12 13 0.1 • 14 2.5 • 14 4 14 0.1 • 15 10 15 a 15 0.1 • 16 2.5 • 18 7.6 16 0.1 • 17 10 17 3 17 0.1 • 18 e 18 3 18 12 19 19 2 19 15 20 20 1 • 20 0.1 • 21 21 64 21 4 22 22 69 n 0.1 . 23 23 1 • 23 0.1 • 24 24 1 • 24 0.1 • 25 25 1 • 25 0.1 • 26 26 1 • 26 0.1 • 27 27 3 27 0.1 • 28 28 1 • 28 0.1 • 29 29 4 29 0.1 • 30 30 2 30 0.1 • 31 31 2 31 32 32 2 32 33 33 2 33 34 34 2 34 35 35 36 38 38 38 37 37 37 38 38 38 39 ea 39 40 a 40 41 41 41 42 42 42 43 43 43 Parameter- 'Lead 1 Standard- •••••=•••=1••••••141, 2g/1 1993 data [one yews worth of data only] Parameter Standar d 88jµ9/1 Parameter- Standard Parwiofer- [Cadmium Standard .240 n BDL.1/2DL Actual Data RESULTS n 1301.1/2DL Actual Data RESULTS n BDL.1/2DL Actual Data RESULTS 1 33 Std Dev. 7.99 1 2.5 ' Std Dev. 16.38 1 025 • Std Dev. 1.61 2 10 Mean 7.73 2 2.5 • Mean 9.89 2 025 • Mean 1.02 3 2.5 • C.V. 1.03 1 (E) 3 5 C.V. 1.65 3 025 • C.V. 1.57 4 2.5 • • -7...„-- Ot ' 4 2.5 • 4 025 5 11 --"-----,-‘ 6 72 5 025 6 1 • Mull Factor . : 111 8 7 Mutt Factor - 1--.1.31 6 0.25 • Mull Factor i. r-----31] 7 22 Max. Value 33 WI 7 9 Max. Vatue 72 pg/I 7 025 • Max. Value 6 pg/I s 7 Max. Pred Ow 9 2,41-38116/1 8 2.5 • Max. Pred Ow 453.6 pg/I 8 025 • Max. Pred Cw 23.4 WI 9 n Allowable Cw 380.5 p4y1 9 6 Allowable Cw 0.2 WI 9 025 • Allowable Om 82 1,4y1 10 13 10 15 10 6 11 25 11 7 11 4 12 2.5 • 12 2.5 • 12 2 13 2.5 • 13 5 13 6 14 16 14 10 14 4 15 11 15 2.5 • 15 2 16 2.6 • 18 2.5 • 16 0.25 17 2.6 • 17 2.5 • 17 0.25 18 8 18 22 18 025 19 2.5 • 19 19 0.7 20 2.5 • 20 20 1.1 21 2.5 • 21 21 025 n s n n 1.1 23 2.5 • 23 23 0.25 24 9 24 24 025 25 2.5 • 25 25 025 26 8 26 26 025 27 2.5 • 27 27 0.7 28 2.5 • 28 28 025 29 2.5 • 29 29 025 30 2.5 • 30 30 025 31 2.6 • 31 31 0.25 • 32 2.5 • 32 32 0.6 33 33 33 025 • 34 34 34 35 35 36 38 36 38 37 37 37 38 38 38 39 39 39 a 40 a 41 41 41 42 42 42 43 43 43 1993 data lone yews worth of data only] eM11.1.=••=••••••=1•0 Partunater !Chromium Standard n BDL=1/2DL 1 16 2 28 3 20 4 19 19 6 54 7 25 8 5 9 5 10 21 11 25 12 15 13 8 14 7 15 14 16 2.5 17 19 18 2.5 19 7 20 2.5 21 17 22 9 23 5 24 18 25 2.5 29 6 V 2.5 29 2.5 29 2.5 30 2.5 31 2.5 32 2.5 33 2.5 34 35 38 37 38 39 40 41 42 43 Parameter Standard SO WI Actual Data RESULTS n BDIJ.1/2DL Actual Data RESULTS Std Dev. 11.08 1 145 Std Dev. 63.81 Mean 11.74 2 114 Mean 70.00 C.V. 0.94 3 42 C.V. 0.77 4 72 103 AU Factor 6 38 Mutt Factor 2.81 Max. Value 54 mil 7 15 Max. Value 222 p6/1 Max. Pred Cw 135 pg/I 8 222 Max. Prod Cw 621.6 go Allowable eve 204.8 WI 9 61 Allowable Cw 204.8 NA 10 34 11 41 12 99 13 44 14 40 15 80 16 18 17 22 • 18 19 • 20 21 22 23 24 • 25 • 26 • 27 • 28 • • 29 30 31 32 • • 33 34 35 38 37 38 39 40 41 42 4.3 1993 data [one years worth of data only] Facilify Natne Y - NPDES 0 - anceyville WW1? i ti• NC0040011 1 Parameer - iArsentc Parameter - [Cyanide Standard - j.. 501g9/1 Ow (MOD) - 7010s (ds)- 1.2 i. n BDL-1/2DL Actual Data RESULTS n BDL-1/20L Actual Data RESULTS IWC (%) . 36.76 i 1 3 Std Dev. 1.17 1 5 • Std Dev. 6.373 2 2.5 Mean 2.78 2 5 • Mean 8.523 FINAL RESULTS 3 2.5 ' C.V. 0.42 3 5 • C.V. 0.748 Arsenic 4 2.5 • 4 14 Max. Pred Cw 8 5 5 5 5 1.61 6 5 • Mult Factor - I.---2:41 Allowable Cw 136.0 6 4 • Mult Factor - I 7 3 Max. Value 5 KO 7 5 Max. Value 25 110 Cyanide 8 5 Max. Pred Cw 5 KO 8 10 Max. Pred Cw 67.2 ugrl Max. Pred Cw 67.2 9 0.005 Allowable Cw 136.0 pg/1 9 10 Allowable Cw 13.6 ug/1 Allowable Cw 13.8 10 3.3 10 5 * 11 2.5 ' 11 5 Copper [AL] 12 2.5 • 12 0.024 MEM. Pred Cw 111 j 13 2.5 • 13 0.016 Allowable Cw 19.0 14 2.5 • 14 12 15 1.5 * 15 16 Lead 16 2.5 • 16 10 Max. Pred Cw 358.8 17 2.5 * 17 20 Allowable Cw 68.0 18 18 11 19 19 13 Mercury 20 20 10 Max. Pred Cw 302.4 21 21 15 Allowable Cw 0.03 22 22 5 23 23 5 Nickel 24 24 5 Max. Pred Cw ..arti 2 .1 25 25 5 Allowable Cw 239.4 26 26 5 27 27 0.16 Silver [AL] 28 28 20 Max. Pred Cw 453.6 29 29 28 Allowable Cw 0.2 1 30 30 5 31 31 5 Cadmium 32 32 Max. Pred Cw 23.4 33 33 Allowable Cw 5.4 34 34 35 35 Chromium 1 36 36 Max. Pred Cw 135 37 37 Allowable Cw 136.0 38 38 39 39 Zinc [AL] i 40 40 Max. Prod Cw 821.6 41 41 Allowable Cw 136.0 42 42 43 43 0.45 • 1993 data [one years worth of dala only] Parameter- 1.6; ix3-719 Standard Populate r Standard- [ n BDL.1/2DL Actual Data RESULTS n BDL.1/2DL Actual Data RESULTS n BDL.1/2DL Actual Data RESULTS 1 37 Std Dev. 10.63 1 3 Std Dev. 14.39 1 0.1 • Std Dev. 822 2 35 Mean 13.75 2 6 Mean 8.08 2 0.1 • Mean 2.52 3 17 C.V. 0.77 3 1 • C.V. 2.37 3 0.1 • C.V. 326 4 19 4 1 • 4 0.1 • 5 31 5 1 • 5 0.1 • 6 11 Mutt Fedor ... ii------31 6 0.1 • Mutt Factor . 1----5ii 6 42 AM/Factor- 1---- -ill 7 13 Max. Value 37 nil 7 1 • Max. Value 69 NA 7 0.1 • Max. Value 42 Mg 8 8 Max. Prod Cw 111 p311 8 1 • Max. Pred Cw 358.8 pg/1 8 0.1 • Max. Prod Cw 302.4 poll 9 14 Allowable Cw 19.0 RA 9 1 • Allowable Cw 68.0 µg/I 9 0.1 • Allowable Cw 0.0 µWI 10 2.5 • 10 1 • 10 0.1 • 11 9 11 3 11 0.1 • 12 8 12 3 12 0.1 ' 13 14 13 12 13 0.1 • 14 2-5 14 4 14 0.1 • 15 10 15 8 15 0.1 • 18 2.5 16 7.5 16 0.1 • 17 10 17 3 17 0.1 • 18 6 18 3 18 12 19 19 2 19 15 20 20 1 • 20 0.1 • 21 21 54 21 4 22 22 69 22 0.1 • 23 23 1 • 23 0.1 • 24 24 1 • 24 0.1 • 26 25 1 • 25 0.1 • 26 29 1 • 26 0.1 • 27 V 3 27 0.1 • 28 28 1 • 28 0.1 • 29 29 4 29 0.1 • 30 30 2 30 0.1 • 31 31 2 31 32 32 2 32 33 33 2 33 34 34 2 34 35 35 35 38 38 38 37 37 37 38 38 38 39 39 39 49 40 40 41 41 41 42 42 42 43 43 43 • 1993 data tone years worth of data only) Parameter- 1.Nickel Standar d .. %KO ••••••,1•MOM•OM.O. Parameter [Silver KJ Standard., ;911 Parameter a [C;d7iii-um--1 Standard 2 pon n BDL.1/2DL Actual Data RESULTS n BDI...1/2D1. Actual Data RESULTS n 13136.1/2DL Actual Data RESULTS • S 1 33 Std Dev. 7.99 1 2.6 • Std Dev. 16.38 1 025 td Dev. 1.61 2 10 Mean 7.73 2 2.5 • Mean 9.89 2 025 • Mean 1.02 3 2.5 • C.V. 1.03 3 5 C.V. 1.65 3 025 • C.V. 1.57 4 2.5 • 4 2.5 • 4 025 * 5 11 5 72 5 0.25 • 6 1 • Mul t Factor = r ---...,:isr Z *3 6 7 Muft Factor - 1- - "631 6 026 • Mutt Factor - r......--311 7 22 Max. Value 33 Pe 7 9 Max. Value 72 µlift 7 025 • Max. Value 6 Nyl 8 7 Max. Prod Cw gritigt WI s 2.5 ' Max. Prod Cw 453.6 Aga 8 025 • Max. Prod Cw 23.4 RA 9 22 Allowable Cw 239.4 ug/I 9 s Allowable Cw 0.2 µWI 9 0.25 • Allowable Cw 5.4 µWI 10 13 10 15 10 -r 11 25 11 7 11 4 12 2.5 • 12 2.5 • 12 2 13 2.5 . 13 5 13 Li 14 16 14 10 14 4 15 11 15 2.5 15 2 16 2.5 • 16 2.5 16 025- • 17 2.5 • 17 2.5 17 0.25 • 18 8 18 22 18 025 • 19 2.5 • 19 19 I 0.7 20 2.5 • 20 20 L1.1 21 2.5 • 21 21 025 • 22 9 22 22 1.1 23 2.5 • 23 23 0 • 24 9 24 24 025 • 25 2.5 • 25 25 025 • 26 8 26 26 025 • 27 2.5 • 27 27 0.7 28 2.5 • 28 28 025 • 29 2.5 • 29 29 025 • 30 2.5 • 30 30 025 • 31 2.5 • 31 31 025 • 32 2.5 • 32 32 E=1 33 33 33 025 • 34 34 34 35 35 35 36 38 38 37 37 37 38 38 38 39 39 39 ao 40 40 41 41 41 42 42 42 43 43 43 1993 data [one years worth of data only] Parameter. !Chromium Standard . 5.4.1011 Parameter !Zinc (AU Standard n BDL.1/2DL Actual Data RESULTS n BDL=1/2DL Actual Data RESULTS 1 16 Sid Dev. 11.08 1 146 Sid Dev. 63.81 2 26 Mean 11.74 2 114 Mean 70.00 3 20 C.V. 0.94 3 42 C.V. 0.77 4 19 4 72 5 19 5 103 s 54 Mutt Factor . 1"-"-2751 6 38 !Wulf Factor . : 2.8. 7 25 Max. Value 54 Paa 7 15 Max. Value 222 pgA 8 5 Max. Prod Cw 135 pga 8 222 Max. Prod Om 621.6 pgA 9 5 Allowable Cw 136.0 pail 9 61 Allowable Cw 138.0 pgA 10 21 10 34 11 25 11 41 12 15 12 99 13 8 13 44 14 7 14 40 15 14 16 80 16 2.5 • 16 18 17 19 17 22 18 2.5 • 18 19 7 19 20 2.5 • 20 21 17 21 22 9 22 23 5 23 24 18 24 25 2.5 • 25 • 26 0 28 V 2.5 • 27 • 28 2.6 • 28 • 29 2.5 • 29 • 30 2.5 • 30 • 31 2.5 • 31 • 32 2.6 • 32 • 33 2.5 • 33 • 34 34 35 35 38 38 37 37 38 38 39 39 40 ao 41 41 42 42 43 43 YanceyvIlle Waste Water Treatment Plant NC0040011 Upstream: 100' upstream Month Temp DO Saturation Fecal Conductivity Jan-94 Dec-93 Nov-93 Oct-93 Sep-93 Aug-93 Jul-93 Jun-93 May-93 Aix-93 Mar-93 Feb-93 5 9 13 18 20 19 25 23 21 16 10 7 13.4 11.6 9.6 8.1 7.7 8.8 7.2 7.4 8.7 10.8 12.3 13.2 105% 100% 91% 136% 85% 95% 87% 86% 98% 109% 109% 108% <10 193.5 101.5 136.5 108.5 43 47.5 21.5 85 38 82 20 0.08 0.12 0.21 0.11 0.1 0.106 0.1 0.098 0.09 0.09 0.09 0.1 Downstream: 100' downstream Temp DO Saturation Fecal Conductivity 5 9 10 16 21 20 26 22 21 16 10 7 12.7 11.2 9.5 7.5 7.1 7.6 7.1 7.2 8.3 9.8 12.0 12.7 99% 97% 84% 76% 80% 84% 88% 8234 93% 99% 108% 104% 35.5 173.5 197 2497 228.5 80 276.5 123 63 126.5 90 <10 0.08 0.09 0.34 0.15 0.104 0.14 0.1 0.12 0.1 0.09 0.1 0.11 Ammonia [2 / 4 mg/i] - Residual Chlorine - Fecal Conform instream Waste Concentrations Residual Chloiine 7010 (cfs) Design Flow (mgd) Design Flow(cfs) Stream Std (Itg/l) Upstream bkgrd level (µgA) IWC (x.) Allowable Concentration (µg.4) Allowable Coneenballon (min Fecal limit Ratio of 1.7 :1 1.2 0.45 0.696 17 0 36.7% 48.3 0.048 200/100m1 1.2 0.45 0.696 1 0.22 36.7% 2.3 4.9 0.45 0.696 1.8 0.22 12.4% 12.9 Ammonia as NH3 (surmner) 7010 (cfs) Design Flow (mgd) Design Flow (cfs) Stream Std (mg/I) Upstream bkgrd level (mg/I) IWO (%) Allowable Concentration (mg/I) 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/I)