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Home My WebLink AboutDEQp00022262Mr. Michael C. Wicker, PE Page 2 NC-DEHNR, Fayetteville Office May 30, 1995 Given the short time period between the start-up of the BCH Energy Project (July 1995) and the NPDES renewal application submittal (November 1995), in lieu of an actual permit modification, your office may consider sending a letter of non -objection to DuPont to discharge the BCH treatment chemicals until issuance of the renewed NPDES Permit. If you should have any questions regarding this matter, please feel free to call me at (910) 678-1155. Michael E. Johnson Environmental Coordinate 2 � w 2 Enclosures Division of Environmental Management June 22, 1995 MEMORANDUM To: Greg Nizich From: Melissa Rosebrock Through: Matt Matthews 0' Subject: Chemical Additive Use at DuPont Company - Fayetteville Works NPDES# NC0003573 (002) Bladen County We have reviewed the proposed biocidal and water treatment additives submitted for approval by the referenced facility. As the facility currently operates this discharge with a chronic toxicity monitoring requirement and limit (downstream of the 001 and 002 convergence), the whole effluent toxicity st should provide validation that chronic toxicity of the effluent is acceptable. Therefore, approval om this office is not necessary. If I can provide you with further information, please call me at (919) 33- 2136. N attachment °p Ul r cc: Central files Michael Wicker - FRO Environmental Sciences Branch Water Quality Section DIVISION OF ENVIRONMENTAL MANAGEMENT June 14, 1995 �u1::WE To: Melissa Rosebrock Aquatic Toxicology From: Greg Nizich(,,5 jJ NPDES Permits Group Subject: Biocide Evaluation Dupont - Fayetteville. NPDES Permit # NC0003573 Bladen County Please review the attached Biocide worksheets for review of the following additives: U BETZ Cor -Trot 778P BETZ Bio -Trot 88P ✓6006 M~ BETZ Balanced Polymer 54400 BETZ OPTI-MEEN BETZ Continuum 29000 All additives would be discharged from utfa11002 which does not have a WET test. If you need any additional information from the ac ity, you can call Mike Johnson at 910- 678-1155. No LC50 data is available for the Continuum product - Mike was not sure if it is a biocide or other type of additive. Please advise if additional information is needed. Facility Name: DuPont Comyanv - Favetteville Works- NPDES #: NC nnng573 BIOCIDE/CHEMICAL TREATMENT WORKSHEET -FORM 101 The following calculations are to be performed on any "biocidal products ultimately discharged to the surface waters of North Carolina. This worksheet must be completed separately for each biocidal product in use. This worksheet is to be returned with all appropriate data entered into the designated areas with calculations performed as indicated. I. Facility Name DuPont Coomyany - Fayetteville Works NPDES # NC 0003573/ML ML County Bladen Receiving Stream Cape Fear River _7010 797 (cfs) (All above information supplied by the Division of Environmental Management) What is the Average Daily Discharge (A.D.D.) volume of the water handling systems to the receiving water body? A.D.D. = 12.2 (in M.G.D.) Please calculate the Instream Waste Concentration (IWC in percent) of this discharge using the daAentered above. v C (A.D.D.) X 100 _ (12.2 ) X 100 = 2. IWC =- (7Q10)(0.646) ( 791 )(0.646) + (A.D.D.) CO This value (IWC) represents the waste concentration to the receiving stream during low flow condition( H. What is the name of the whole product chemical treatment proposed for use in the discharge identified in Part I? 3,e l Cer- /-- / '��'f Please list the active ingredients and percent composition: �oP✓.`m7��% % n t r % What feed or dosage rate (D.R.) is used in this application? The units must be converted to grams of whole product used per day. D.R.= 31,4 grams/day D.E.M. Form 101 (7/92) 1 Facility Name: DuPont Company Fayetteville Works NPDES #: NC 0003573 Estimate total volume of the water handling system between entry of biocidal product and NPDES discharge point. On an attached sheet please provide justification for this estimate (system volume, average cycles per blowdown, holding lagoon size, etc.) . Volume= 0.16 million gallons What is the pH of the handling system prior to biocide addition? If unknown, enter N/A. 6-9 What is the decay rate (D.K.) of the product? If unknown, assume no decay (D.K.=O)- and proceed to asterisk. The degradation must be stated at pH level within 1/2 pH standard unit within handling system. Enter the hall life (Half Life is the time required for the initial product to degrade to half of its original concentration). Please provide copies of the sources of this data. H.L. = unknown Days The decay rate is equal to H1L X 0.69 = 0 - =Decay Rate (D.K.) Calculate degradation factor (D.F.). This is the first order loss coefficient. D.F. _. (A. D. ) + (D.K.) (12.2 )' +`( 0 76 (Volume} ( 0.16 ) Calculate Steady State Discharge Concentration: 0 3 �- ) //0 < �y Dischg Conc. _ (D.R.) ( 'T = 0, mg/I (D. F.)(Volume)(3785) - ( 76 ) ( 0.16 ) (3 78 5 ) Calculate concentration of biocide instream during low flow conditions. (Receiving Stream Concentration) (Dischg. Conc.) x (IWC%) (A aelP7 ) x ( 2.3 ) _ �. Qa!J4�)- mg/I 100 - 100 - Receiving Stream Concentration III. Calculate regulated limitation. List all LC50 data available for the whole product according to the following columns. (Note that units should be in mg/1). Please provide copies of the sources of this data. Organism RQtwll9w 7i-aw[ ay�u�a agti� D.E.M. Form 101 (7/92) 2 Test Duration LC50 (m2gt) /�"Gtli' �• J Facility Name: DuPont Company - Fayetteville Works NPDES #: NC 0003573 Choose the lowest LC50 listed above: Enter the LC50: X0.,3 H+9Z -If the half life (H.L.) is less than 4 days, perform the following calculation. Regulated Limitation = 0.05 x LC50 = Mg/l If the half Life (H.L.) is greater than 4 days or unknown, perform the following calculation. Regulated Limitation = 0.01 x LC50 = a. DG -3 mg/I Choose the appropriate regulated limitation from the calculations immediately above and place in this blank: From Part II enter the receiving stream concentration: d Ddd�l mg/liter �J m z IV. Analysis. ; If the receiving stream concentration is greater than the calculated regulated limitation, then this�iociA is unacceptable for use. Person in Responsible Charge D.E.M. Form 101 (7/92) 3 Date BETZ ORATORIES, INC. 4636 SOMERTON�ROAD, TREVOSE, PA 19053 PRODUCT: COR-TROL 778-P AQUATIC TOXICOLOGY August 19, 1994 Rainbow Trout 96 Hour Static Acute Bioassay LC50: 6.3 mg/L No Effect Level: 3.7 Fathead Minnow 96 Hour Static Renewal Bioassay LC50: 8-:2 mg/L No Effect Level: 3.1 Daphnia magna 48 Hour Static Renewal Bioassay LC50: 8.7 mg/L No Effect Level: 4.9 BIODEGRADATION COD (mg/gm): 47 Calculated TOC lculated BOD -5 m): 27 BOD -28 (mg/gm): 27 Calculated Closed Bottle Test % Degradation in 28 days: 83 Calculated Zahn-Wellens Test % Degradation in 28 days: 65 Calculated MAMMALIAN TOXICOLOGY Oral LD50 RAT: >5,000 MG/KG - Note - ESTIMATED VALUE Dermal LD50 RABBIT: >5,000 MG/KG Note - ESTIMATED VALUE Facility Name: DuPont Company - Fayetteville Works NPDES #: NC non'1573 BIOCIDE/CHEMICAL TREATMENT WORKSHEET -FORM 101 The following calculations are to be performed on any biocidal products ultimately discharged to the surface waters of North Carolina. This worksheet must be completed separately for each biocidal product in use. This worksheet is to be. returned with all appropriate data entered into the designated areas with calculations performed as indicated. I. Facility Name DuPont Company - Fayetteville Works NPDES # NC 0003573 County Bladen Receiving Stream Cape Fear River 7Q10 791 (cfs) (All above information supplied by the Division of Environmental Management) What is the Average Daily Discharge (A.D.D.) volume of the water handling systems to the receiving water body? A.D.D. = 12.2 (in M.G.D.) Please calculate the Instream Waste Concentration (IWC in percent) of this discharge using the data enfer'ed above. i IWC = (A.D.D.) X 100 = (12.2) X 100 - 2.3 46 791 0.64 + A.D.D.) (7Q10)(0.6 ) ( ) ( ) ( C— C= This value (IWC) represents the waste concentration to the receiving stream during low flowditics. ' CO ko > i 11. What is the name of the whole product chemical treatment proposed for use in the discharge hIntifieg n Part I? '8457-9 �Z3,o -Tal P @ Please list the active ingredients and percent composition: 1 bravo -� -�i%va-sS-c�kr A/r% What feed or dosage rate (D.R.) is used in this application? The units must be converted to grams of whole product used per day. D.R.= 224 d grams/day D.E.M. Form 101 (7/92) Facility Name: DuPont Company - Fayetteville Works NPDES #: NC 0003573 Estimate total volume of the water handling system between entry of biocidal product and NPDES discharge point. On an attached sheet please provide justification for this estimate (system volume, average cycles per blowdown, holding lagoon size, etc.) . Volume= 0.16 million gallons What is the pH of the handling system prior to biocide addition? If unknown, enter WA. 6-9 What is the decay rate (D.K.) of the product? If unknown, assume no decay (D.K.=O) and proceed to asterisk. The degradation must be stated at pH level within 1/2 pH standard unit within handling system. Enter the half life (Half Life is the time required for the initial product to degrade to half of its original concentration). Please provide copies of the sources of this data. H.L. = Unknown Days The decay rate is equal to H1L.X 0.69 = 0 =Decay Rate (D.K.) Calculate degradation factor (D.F.). This is the first order loss coefficient. D.F. =(A. D. D.) + (D.K.) - (12.2 ).+ ( 0 ) _ 76 (Volume) - ( 0.16 ) Calculate Steady State Discharge Concentration: (D.R.) ( 22� ) _ Dischg Conc. _ (D.F.)(Volume)(3785) _ ( 76 ) ( 0.16 ) (3 7 8 5) �� mg/I Calculate concentration of biocide instream during low flow conditions. (Receiving Stream Concentration} (Discha. Conc.) x (IWC%) x ( 2.3 ) _ �� 100 = 100 - mg�l Receiving Stream Concentration III. Calculate regulated limitation. List all LC50 data available for the whole product according to the following columns. (Note that units should be in mg/1). Please provide copies of the sources of this data. p--�Crganism I �aiwkw I !/M74" D.E.M. Form 101 (7/92) 2 Test Duration �fl-G�v LC50(mrA G. Y7 2,19 0.4Sr Facility Name: DuPont Company - Fayetteville Works NPDES #: NC 0003573 Choose the lowest LC50 listed above: Enter the LC50: G< *S- -11 S•fl the half life (H.L.) is less than 4 days, perform the following calculation. Regulated Limitation = 0.05 x LC50 = TTV If the half life (H.L.) is greater than 4 days or unknown, perform the following calculation. Regulated Limitation = 0.01 x LC50 = 0, 004 � mg/I Choose the appropriate regulated limitation from the calculations immediately above and place in this blank: 0, &^6,OJr mg/liter From Part II enter the receiving stream concentration: O, 00/ � mg/liter IV. Analysis. , Y If the receiving stream concentration is greater than the calculated regulated limitation, then this biocide is unacceptable for use. M /��cG�ae l � �oLjllSo� Signature Person in Responsible Charge D.E.M. Form 101 (7/92) 3 Date BETZ LABORATORIES, INC. 4636 SOMERTON ROAD, TREVOSE, PA 19053 PRODUCT: BIO-TROL 88P AQUATIC TOXICOLOGY Rainbow Trout 96 Hour Static Acute Bioassay LC50: .87 mg/L Fathead Minnow 96 Hour Static Acute Bioassay LC50: 2..19 mg/L Daphnia magna 48 Hour Static Acute Bioassay. LC50: .45 mg/L Sheepshead Minnow 96 Hour Static Acute Bioassay LC50: 19.5 mg/L August 19, 1994 BIODEGRADATION NO DATA AVAILABLE MAMMALIAN TOXICOLOGY Oral LD50 RAT: 578 MG/KG Note - 600 MG/KG PER ALT. SOURCE; DEHALOGENATED BYPRODUCT RAT ORAL LD50: >4,000 MG/KG Dermal LD50 RABBIT: >2,000 MG/KG . Note - ALTERNATE SOURCE CONCURS Inhalation LC50 RAT: 1.88 MG/L/4HR Note - >3.2 MG/L/4HR AT 100 PPM (NO DEATHS) PER ALTERNATE SOURCE Skin Irritation Score RABBIT: 6.1 Note - 6.98 PER ALTERNATE SOURCEr REVERSIBLE; DEHALOGENATED BYPRODUCT SCORE: 0.8 Eye Irritation Score RABBIT: 103 - Note - 14 DAY-IRREVERSIBLE-MAX.AT DAY 3; DEHALOGENATED BYPRODUCT SCORE: 12.8 -REVERSIBLE 90 Day Feed -Study RAT: NO DATA Note - DEHALOGENATED BYPRODUCT 90 -DAY ORAL LD50: >2,000 •Facility Name: DuPont Company - Fayetteville Works NPDES #: NC nnn357' BIOCIDE/CHEMICAL TREATMENT WORKSHEET -FORM 101 The following calculations are to be performed on any biocidal products ultimately discharged to the surface waters of North Carolina. This worksheet must be completed separately for each biocidal product in use. This worksheet is to be returned with all appropriate data entered into the designated areas with calculations performed as indicated. Facility Name DuPont Company - Fayetteville Works NPDES # NC 0003573 County Bladen Receiving Stream Cape Fear River 7010 791 (CfS) (All above information supplied by the Division of Environmental Management) What is the Average Daily Discharge (A.D.D.) volume of the water handling systems to the receiving water body? FAIIII10 12.2 (in M.G.D.) Please calculate the Instream Waste Concentration (IWC in percent) of this discharge using the data entered above. (A.D.D.) X 100 = (12 . �) X 100 _ 2.3 . s IWC — (7Q10)(0.646) ( 791 )(0.646) + (A.D.D.) v t C This value (IWC) represents the waste concentration to the receiving stream during low flow�jnditg'ns J _ II. What is the name of the whole product chemical treatment proposed for use in the dischargentifid in -Part pp r- '66% �a�auc 7��YeyS4G Please list the active ingredients and percent composition: YlQ r A A",614T n/.0 �11i-4- K�G % M What feed or dosage rate (D.R.) is used in this application? The units must be converted to grams of whole product used per day. D.R.= 6�99.7 grams/day D.E.M. Form 101 (7/92) 1 Facility Name: DuPont Company - Fayetteville Works NPDES #: NC 0003573 Estimate total volume of the water handling system between entry of biocidal product and NPDES discharge point. On an attached sheet please provide justification for this estimate (system volume, average cycles per blowdown, holding lagoon size, etc.) Volume= 0.16 million gallons What is the pH of the handling system prior to biocide addition? If unknown, enter N/A. 6-9 What is the decay rate (D.K.) of the product? If unknown, assume no decay (D.K.=O) and proceed to asterisk. The degradation must be stated at pH level within 1/2 pH standard unit within handling system. Enter the half life (Half Life is the time required for the initial product to degrade to half of its original concentration). Please provide copies of the sources of this data. H.L. = Unknown Days The decay rate is equal to H 1 L. X 0.69 = 0 =Decay Rate (D.K.) Calculate degradation factor (D.F.). This is the first order loss coefficient. D.F. =A( D. D.) + (D.K.) - (12.2 )'+ ( 0 ) _. 76 (Volume) - ( 0.16 ) Calculate Steady State Discharge Concentration: Dischg Conc. _ (D.R.) _ ( �q, ;7 ) (D.F.)(Volume)(3785) - ( 76 ) ( 0.16 ) (3 7 8 5 ) Calculate concentration of biocide instream during low flow conditions. (Receiving Stream Concentration) 0.00/S mg/I _(Dischg. Conc.) x (IWC%) ( 0.01" ) x ( 2.3 ) _ �, DODD,3 100 = 100 - mg/I Receiving Stream Concentration III. Calculate regulated limitation. List all LC50 data available for the whole product according to the following columns. (Note that units should be in mg/1). Please provide copies of the sources of this data. Organism Test Duration LC50 (nxA OAALAri �2- MAIha. �t `r�- > ZED > �000 D.E.M. Form 101 (7/92) 2 Facility Name: DuPont Company - Fayetteville Works NPDES #: NC 0003573 Choose the lowest LC50 listed above: Enter the LC50: i 201:V -11 the half life (H.L.) is less than 4 days, perform the following calculation. Regulated Limitation = 0.05 x LC50 - —mg/I ff the half rde (H.L.) is greater than 4 days or unknown, perform the following calculation. Regulated Limitation - 0.01 x LC50 = > 2 d mg/1 Choose the appropriate regulated limitation from the calculations immediately above and place in this blank: i 20 mg/liter From Part II enter the receiving stream concentration: �v 0,0000-3-5 mg/liter c. IV. Analysis. ' . � �� If the receiving stream concentration is greater than the calculated regulated limitation, then tl:bio4e is cr; � unacceptable for use. lq;k-44e l " 0;A1 f.So A-- Person in Responsible Charge D.E.M. Form 101 (7/92) 3 AM BETZ LABORATORIES, INC. 4636 SOMERTON ROAD, TREVOSE, PA 19053 PRODUCT: BALANCED POLYMER 54401 AQUATIC TOXICOLOGY August 19, 1994 Daphnia magna 48 Hour Static Screen PH of test solutions were adjusted to a level o - 0* Mortality: 2000 mg/L f 6 9. Fathead Minnow 96 Hour Static Screen with 48 -Hour PH Of. test solutions were adjusted to a level Ronewai 0� Mortality: 2000 mq�L f 6 9' BIODEGRADATION COD (mg/gm); 93 Calculated TOC (mg/gm); 28 Calculated BOD-5-(mg/gm); 0 Calculated BOD -28 (mg/gm): 0 Calculated Closed Bottle Test % Degradation in 28 days: 2 Calculated Zahn-Wellens Test % Degradation in 28 day's: s> ays: 0 Calculated ` MAMMALIAN TOXICOLOGY Oral LD50 RAT: >5,000 MG/KG Note ESTIMATED VALUE Dermal LD50 RABBIT: >5,000 MG/KG • Note - ESTIMATED VALUE Facility Name: DuPont Company - Fayetteville Works NPDES #: NC non'1571 BIOCIDE/CHEMICAL TREATMENT WORKSHEET -FORM 101 The following calculations are to be performed on any biocidal products ultimately discharged to the surface waters of North Carolina. This worksheet must be completed separately for each biocidal product in use. This worksheet is to be returned with all appropriate data entered into the designated areas with calculations performed as indicated. Facility Name DuPont Company - Fayetteville Works NPDES # NC 0003573 County Bladen Receiving Stream Cape Fear River 7010 791 (cfS) (All above information supplied by the Division of Environmental Management) What is the Average Daily Discharge (A.D.D.) volume of the water handling systems to the receiving water body? A.D.D. = 12.2 (in M.G.D.) Please calculate the Instream Waste Concentration (IWC in percent) of this discharge using the data entered above. rn S 04 (A.D.D.) X 100 _ (12.2) X 100 = 2 ./Z IWC = - 791 0.64 . + A.D.D.} (7010)(0.646} ( ) ( ) ( . `1 This value (IWC) represents the waste concentration to the receiving stream during low flow crsDltiitior-4.,.y - - II. What is the name of the whole product chemical treatment proposed for use in the discharge identified in -Part 19- Sc- 7"12- O'er, - MLEiY Please list the active ingredients and percent composition: P��;xlbiv, C C/0 a of x e- % !"tOY)7 6:1tG % What feed or dosage rate (D.R.) is used in this application? The units must be converted to grams of whole -product used/ rpeer day. l D.R.= 1. 4 grams/day D.E.M. Form 101 (7/92) Facility Name: DuPont Company - Fayetteville Works NPDES #: NC 0003573 Estimate total volume of the water handling system between entry of biocidal product and NPDES discharge point. On an attached sheet please provide justification for this estimate (system volume, average cycles per blowdown, holding lagoon size, etc.) Volume= 0.16 million gallons What is the pH of the handling system prior to biocide addition? If unknown, enter N/A. 6-9 What is the decay rate (D.K.) of the product? If unknown, assume no decay (D.K.=O) and proceed to asterisk. The degradation must be stated at pH level within 1/2 pH standard unit within handling system. Enter the half life (Half Life is the time required for the initial product to degrade to half of its original concentration). Please provide copies of the sources of this data. H.L. = Unknown Days The decay rate is equal to H1L X 0.69 = 0 =Decay Rate (D.K.) Calculate degradation factor (D.F.). This is the first order loss coefficient. r' D.F. = AS D.D.) + (D.K.) - (12.2 ) + ( 0 ) _. 76 (Volume) - ( 0.16 ) 1 Calculate Steady State Discharge Concentration: Dischg Conc. _ (D.R.) - ( /7, ) - 0. (JOD _mg/I (D.F.)(Volume)(3785) - ( 76 ) ( 0.16 ) (3 7 8 5) - Calculate concentration of biocide instream during low flow conditions. (Receiving Stream Concentration) ischg. Conc.) x (IWC0Q (O,aoo�) x ( 2. ) _ U. 100 100 ODpOh i mg/I = - Receiving Stream Concentration III. Calculate regulated limitation. List all LC50 data available for the whole product according to the following columns. (Note that units should be in mg/1). Please provide copies of the sources of this data. Organism Test Duration LC50 (mgm DRPffi U M,44N-4 Me >54) R/NBokJ r949 7-0 yid > /DO D.E.M. Form 101 (7/92) 2 Facility Name: DuPont Company - Fayetteville Works NPDES #: NC 0003573 Choose the lowest LC50 listed above: Enter the LC50:Ntg�L- •ff the half life (H.L.) is less than 4 days, perform the following calculation. Regulated Limitation = 0.05 x LC50 = mg/l If the half life (H.L.) is greater than 4 days or unknown, perform the following calculation. Regulated Limitation = 0.01 x LC50 =>d. J mg/I Choose the appropriate regulated Lrdtation from the calculations immediately above and place in this blank: ,�' d* 5 mg/liter From Part II enter the receiving stream concentration: 045MO2mg/liter IV. Analysis. If the receiving stream concentration is greater than tl'e calculated regulated limitation, then this bio�1, e s y unacceptable for use. n - Person in Responsible Charge I.E.M. Form 101 (7/92) 3 Date BETZ LABORATORIES, INC. 4636 SOMERTON ROAD, TREVOSE, PA 19053 PRODUCT: OPTI-MEEN SERIES PROPOSED AQUATIC TOXICOLOGY Daphnia magna 48 Hour Static Screen .0% Mortality: 50 mg/L Rainbow Trout 48 Hour Static Screen 1004 Mortality: 500 mg/L 0$ Mortality: 100 BIODEGRADATION COD (mg/gM): 733 Calculated TOC (mg/gm): 287 Calculated BOD -5 (mg/gm): 2 Calculated BOD -28 (mg/gm); 187 Calculated Closed Bottle Test % Degradation in 28 days: Zahn-Wellens Test % Degradation in 28 days: r MAMMALIAN TOXICOLOGY 37 Calculated 47 Calculated August 19, 1994 Oral LD50 RAT: 675 MG/KG Note - ESTIMATED VALUE Dermal LD50 RABBIT: ago MG/KG } Note - ESTIMATED VALUE Eye'Irritation Score RABBIT: CORROSIVE Note - 15% CYCLOHEXYL,AMINE SCORE:101, + CONSTANT IRRITATION, +I -RINSING, Skin Irritation Score - _ Note - EPA CATEGOR�iITCORROSIVE; DOT 60 MINUTES BUT NOT 3 MI X181 CORROSIVE IN NUTES� Facility Name: DuPont Company - Fayetteville Works NPDES #: NC nnnis7-i BIOCIDE/CHEMICAL TREATMENT WORKSHEET -FORM 101 The following calculations are to be performed on any biocidal products ultimately discharged to the surface waters of North Carolina. This worksheet must be completed separately for each biocidal product in use. This worksheet is to be returned with all appropriate data entered into the designated areas with calculations performed as indicated. Facility Name DuPont Company - Fayetteville Works NPDES # NC 0003573 County Bladen Receiving Stream Cape Fear River 7Q10 7g1 (cfs) (All above information supplied by the Division of Environmental Management) What is the Average Daily Discharge (A.D.D.) volume of the water handling systems to the receiving water body? A.D.D. = - 12.2 (in M.G.D.) Please calculate the Instream Waste Concentration (IWC in percent) of this discharge using the data�@ntered n above. o (A.D.D.) X 100 (12.Z ) X 100 _ 2.3 c z. IWC (7Q10)(0.646) - ( 791 )(0.646) + (A.D.D.) - CO %� cr _ This value (IWC) represents the waste concentration to the receiving stream during low flow conditions�- 1 What is the name of the whole product chemical treatment proposed for use in the discharge identified in- Fart`J? .B4 -7.Z CaAt Alz Os - Please list the active ingredients and percent composition: Pr,:c�a✓y 4cr Y 1a�e C'! *ref^ LtoSD`1a� 5 What feed or dosage rate (D.R.) is used in this application? The units must be converted to grams of whole product used per day. D.R.= 1w'-33 grams/day D.E.M. Form 101 (7/92) Facility Name: DuPont Company - Fayetteville Works NPDES #: NC 0003573 Estimate total volume of the water handling system between entry of biocidal product and NPDES discharge point. On an attached sheet please provide justification for this estimate (system volume, average cycles per blowdown, holding lagoon size, etc.) Volume= 0.16 million gallons What is the pH of the handling system prior to biocide addition? If unknown, enter N/A. 6-9 What is the decay rate (D.K.) of the product? If unknown, assume no decay (D.K.=O) and proceed to asterisk. The degradation must be stated at pH level within 1/2 pH standard unit within handling system. Enter the hali life (Half Life is the time required for the initial product to degrade to half of its original concentration). Please provide copies of the sources of this data. H.L. = Unknown Days The decay rate is equal to HiL X 0.69 = 0 =Decay Rate (D.K.) r� Calculate degradation factor (D.F.). This is the first order loss coefficient. 1). F. -(A.D. D.) + (D.K.) - (12.2 } + ( 0 } = 76 (Volume) - ( 0.16 ) Calculate Steady State Discharge Concentration: (D.R.) ( 1633 ) Dischg Conc. _ (D.F.)(Volume)(3785) _ ( 76 ) ( 0.16 ) (3 78 5) _ �� 0—:F-5mg/f Calculate concentration of biocide instream during low flow conditions. (Receiving Stream Concentration) 1Dischg. Conc.) x (IWC%)__ (o•d35) x ( 2.3 ) _ G ODDS/ rng/t 100 100 Receiving Stream Concentration III. Calculate regulated limitation. List all LC50 data available for the whole product according to the following columns. (Note that units should be in mg/1) Please provide copies of the sources of this data. Test Duration D.E.M. Form 101 (7/92) 2 LC50(mg/1) Aj:�awz ? 1 pe-�/L Facility Name: DuPont Company - Fayetteville Works NPDES #: NC 0003573 Choose the lowest LC50 listed above: Enter the LC50: > hrg/L- •fi the hag Gfe (H.L.) is less than 4 days, perform the following calculation. Regulated Limitation = 0.05 x LC50 = mg/I If the half Gfe (H.L.) is greater than 4 days or unknown, perform the following calculation. Regulated Limitation = 0.01 x LC50 = -> d. 6/ mg/1 Choose the appropriate regulated limitation from the calculations immediately above and place in this blank: 1> 0 G/ mg/liter From Part II enter the receiving stream concentration: mg/liter v IV. Analysis. a.� 0 5... If the receiving stream concentration is greater than the calculated regulated limitation, then tft1�'bioe is unacceptable for use. cin 3 !'llGl�P [ � J 6GIltfOYL � Person in Responsible Charge D.E.M. Form 101 (7/92) 3 Date BETZ LABORATORIES, INC. 4636 SOMERTON ROAD, TREVOSE, PA 19053 PRODUCT: CONTINUUM 29000 SERIES PROPOSED August 19 1994 AQUATIC TOXICOLOGY NO DATA AVAILABLE BIODEGRADATION _ COD (mg/gm): 212 Calculated TOC (mg/gm): 81 Calculated BOD -5 (mg/gm): 3 Calculated BOD -28 (mg/qm): 13 Calculated Closed Bottle Test % Degradation in 28 days: 0 Calculated Zahn-Wellens Test $ Degradation in 28 days: 6 Calculated MAMMALIAN TOXICOLOGY Oral LD50 RAT: 4,800 MG/KG Note - ESTIMATED VALUE Dermal LD50 RABBIT: >5,000 MG/KG Note - ESTIMATED VALUE AM NPDES PERMIT NO. NC0003573 ADDENDUM TO D.E.M. FORM 101 Estimation of total volume of the water handling system between entry of biocidal product and NPDES discharge point: Basis: Discharge from BCH Energy Project enters the DuPont non -contact wastewater conveyance ditch and flows to Outfall 002. Conveyance Ditch Volume = 5 ft x 2 ft x 2200 ft = 22,000 fO = 165,000 gallons N