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Aquatic Resources (AR) RAI AR-7 WF3 1998_WF3 LPDES Fact Sheet and Rationale for Draft LPDES Permit
	ML17037C997
Person / Time
Site:	Waterford
Issue date:	02/07/2017
From:	; Entergy Operations
To:	Keegan E; Division of License Renewal
	ELAINE KEEGAN, NRR/DLR, 415-8517
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LPDES PERMIT NO. LA0007374 LPDES FACT SHEET and RATIONALE FOR THE DRAFT LOUISIANA POLLUTANT DISCHARGE ELIMINATION SYSTEM (LPDES) PERMIT TO DISCHARGE TO WATERS OF LOUISIANA I. Company/Facility Name: Entergy Operations, Inc.

Waterford 3 Steam Electric Station Post Office Box B Killona, Louisiana 70066 II. Issuing Office: Louisiana Department of Environmental Quality (LDEQ)

Office of Water Resources Post Office Box 82215 Baton Rouge, Louisiana 70884-2215 III. Prepared By: Elizabeth A. Ballard Industrial Permits Section Water Pollution Control Division Phone #: 504-765-0543 Fax #: 504-765-0635 Date Prepared: July 22, 1998 IV. Permit Action/Status:

A. Reason For Permit Action:

Proposed reissuance of an expired Louisiana Pollutant Discharge Elimination System (LPDES) permit for a 5-year term following regulations promulgated at LAC 33:IX.2365/40 CFR 122.46*.

In order to ease the transition from NPDES to LPDES permits, dual regulatory references are provided where applicable. The LAC references are the legal references while the 40 CFR references are presented for informational purposes only. In most cases, LAC language is based on and is identical to the 40 CFR language. 40 CFR Parts 401-402, and 404-471 have been adopted by reference at LAC 33:IX.2533 and will not have dual references. In addition, state standards (LAC Chapter 11) will not have dual references.

LAC 33:IX Citations: Unless otherwise stated, citations to LAC 33:IX refer to promulgated regulations listed at Louisiana Administrative Code, Title 33, Part IX.

40 CFR Citations: Unless otherwise stated, citations to 40 CFR refer to promulgated regulations listed at Title 40, Code of Federal Regulations in accordance with the dates specified at LAC 33:IX.2531, 2533, and 2301.F.

B. NPDES permit - NPDES permit effective date: May 20, 1991 NPDES permit expiration date: May 19, 1996 EPA has not retained enforcement authority.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 2 C. LWDPS permit - Louisiana Stream Control Commission letter dated WP4832 September 27, 1973 D. LWDPS permit - Class I Sanitary General Permit LAG530192 Authorization date: April 29, 1998 Permit expiration date: November 18, 2002 F. Original application received on November 17, 1995, with revised applications received on February 25, 1998, an addendum received on June 15, 1998, and a letter with revised flow diagram received on July 29, 1998.

V. Facility Information:

A. Location - LA Highway 18 (River Road) in Killona (11/4 miles west of the intersection of LA Highway 3142, and LA Highway 18), St. Charles Parish B. Applicant Activity -

According to the application, Entergy Waterford 3 Steam Electric Station is a nuclear fueled steam electric generating station with a net output of 1,104 megawatts (MWe).

This Office does not have authority to regulate radioactive materials in water discharge permits. Jurisdiction for regulation of these materials is held by the Nuclear Regulatory Commission (NRC) under the Atomic Energy Act, 42 U.S.C. 2021, et seq.

Therefore, the permittee must comply with radiation standards established and regulated by the NRC. Furthermore, this permit will not address those radiation standards.

C. Technology Basis - (40 CFR Chapter 1, Subchapter N/Parts 401-402, and 404-471 have been adopted by reference at LAC 33:IX.2533)

Guideline Reference Steam Electric Power Generating Point Source Category 40 CFR 423 Max 30 Day Average Continuous Flow - 1,346 MGD Other sources of technology based limits:

LA0007374 Certification of NPDES Permit Modification, dated 6/16/95, by Percy V. Harris (LDEQ)

LA0007374 EPA Fact Sheet public noticed on June 3, 1995 LA0007374 NPDES Permit effective 5/20/91, and modification effective on July 21, 1995 LDEQ Stormwater Guidance, letter dated 6/17/87, from J. Dale Givens (LDEQ) to Myron Knudson (EPA Region 6)

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 3 Final Environmental Statement, Louisiana Power & Light Co.(LP&L), September 1981 Demonstration Under Section 316(a) of the CWA, Louisiana Power &

Light Co., April 1979 Hydrologic and Quality Characteristics of the Lower Mississippi River, Technical Report Number 5 LDEQ Sanitary General Permits Best Professional Judgement using:

Letter from LDEQ to Entergy dated 6/23/98 Letter from Entergy to LDEQ dated 6/13/97 Letter from LDEQ to Entergy dated 8/26/96 Letter from EPA Region 6 to Entergy dated 4/16/96 Letter from EPA Region 6 to Entergy dated 1/23/96 Letter from Entergy to EPA Region 6 dated 10/25/94 Letter from Entergy to LDEQ dated 9/9/94 Letter from EPA Region 6 to LP&L dated 5/30/85 Letter from LP&L to EPA Region 6 dated 3/1/85 D. Fee Rate -

1. Fee Rating Facility Type: Major

2. Complexity Type: V

3. Wastewater Type: I

4. SIC code: 4911 E. Continuous Facility Effluent Flow (Max 30-Day) - 1,346 MGD VI. Receiving Waters:

Mississippi River (Outfall 001):

1. TSS (15%), mg/L: 25.0

2. Average Hardness, mg/L CaCO3: 149.70

3. Critical Flow, cfs: 141,955

4. Mixing Zone Fraction: 0.333

5. Harmonic Mean Flow, cfs: 366,748

6. River Basin: Mississippi River, Segment No. 070301

7. Designated Uses:

The designated uses are primary contact recreation, secondary contact recreation, fish and wildlife propagation, and drinking water supply.

Information based on the following: Water Quality Management Plan, Volume 5A, 1994; LAC 33:IX Chapter 11;/Recommendation(s) from the Engineering Section. Hardness and 15% TSS data come from monitoring station 58010321 on the Mississippi River listed in Hardness and TSS Data for All LDEQ Ambient Stations for the Period of Record as of March 1998, LeBlanc.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 4 40 Arpent Canal thence to Lac Des Allemands (Outfalls 004 & 005):

1. River Basin: Barataria Basin, Segment No. 020202

2. Designated Uses:

The designated uses are primary contact recreation, secondary contact recreation, and fish and wildlife propagation.

VII. Outfall Information:

Outfall 001 A. Type of wastewater - the continuous discharge from the turbine condenser cooling system to the Mississippi River. The turbine condenser cooling system receives once-through non-contact cooling water from the Mississippi River that flows through the main condenser, the steam generator blowdown heat exchangers, and the turbine building closed cooling heat exchanger. Previously monitored low volume discharges from Internal Outfalls 101 (former 01A), 201 (former 01B), 301 (former 01C), 401 (former 01D), 501, 601, 701, 801, and 901 also exit the facility via Outfall 001.

B. Location - at the point of discharge from the turbine condenser cooling system where the once-through non-contact cooling water, and the previously monitored effluents discharge prior to entering the Mississippi River at Latitude 2959'47", Longitude 9028'8",

+129.5 M.A.H.P.

C. Treatment - treatment of once-through non-contact cooling water consists of:

- intake screening

- chlorination, when required

- LDEQ approved mussels treatment, when required

- addition of dispersant/polymer, when required D. Flow - Continuous, (Max 30-Day) 1,346 MGD.

E. Receiving waters - Mississippi River F. Basin and segment - Mississippi River Basin, Segment 070301 G. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 5 PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand <2.0 <2.0 ---

Chemical Oxygen Demand 46.1 46.1 ---

Total Organic Carbon 6.7 6.7 ---

Total Suspended Solids 269 269 ---

Ammonia (as N) <0.05 <0.05 ---

Temperature (Winter) 21.1C 29.7C ---

(Summer) 41.1C 42.7C ---

pH (Standard Units) NA NA ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Color (nM Units) BA BA ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) BA BA ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease <5.0 <5.0 ---

Phosphorous, Total as (P) BA BA ---

Radioactivity:

Alpha, Total (pCi/L) 0.0129 0.0129 ---

Beta, Total (pCi/L) 4.2 4.2 ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) 84.2 84.2 ---

Sulfide (as S) BA BA ---

Sulfite (as SO3) BA BA ---

Surfactants <0.1 <0.1 ---

Aluminum (Total) BA BA ---

Barium (Total) <0.2 <0.2 ---

Boron (Total) 0.111 0.111 ---

Cobalt (Total) BA BA ---

Iron (Total) 0.795 0.795 ---

Magnesium (Total) BA BA ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) BA BA 60 Arsenic (Total) <10 <10 10 Beryllium (Total) <5 <5 5 Cadmium (Total) <1 <1 1 Chromium (Total) <10 <10 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 6 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) <10 <10 10 Lead (Total) <3 <3 5 Mercury (Total) <0.2 <0.2 0.2 Molybdenum (Total) BA BA 30 Nickel (Total) Freshwater <40 <40 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <2 <2 2 Thallium (Total) <10 <10 10 Zinc (Total) 25.2 25.2 20 Cyanide (Total) <10 <10 10 Phenolics, Total Recoverable (4AAP) <50 <50 5 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acrolein <10 <10 50 Acrylonitrile <10 <10 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform <5 <5 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane BA BA 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene <5 <5 10 1,1,1-Trichloroethane <5 <5 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 7 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane BA BA 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <10 <10 10 2,4-Dichlorophenol <10 <10 10 2,4-Dimethylphenol <10 <10 10 4,6-Dinitro-o-Cresol <50 <50 50 2,4-Dinitrophenol <50 <50 50 2-Nitrophenol <10 <10 20 4-Nitrophenol <50 <50 50 p-Chloro-m-Cresol <10 <10 10 Pentachlorophenol <50 <50 50 Phenol <10 <10 10 2,4,6-Trichlorophenol <10 <10 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <10 <10 10 Acenaphthylene <10 <10 10 Anthracene <10 <10 10 Benzidine <30 <30 50 Benzo(a)anthracene <10 <10 10 Benzo(a)pyrene <10 <10 10 3,4-Benzofluoranthene <10 <10 10 Benzo(ghi)perylene <10 <10 20 Benzo(k)fluoranthene <10 <10 10 Bis(2-chloroethoxy) Methane <10 <10 10 Bis(2-chloroethyl) Ether <10 <10 10 Bis(2-chloroisopropyl) Ether <10 <10 10 Bis(2-ethylhexyl) Phthalate <10 <10 10 4-Bromophenyl Phenyl Ether <10 <10 10 Butylbenzyl Phthalate <10 <10 10 2-Chloronaphthalene <10 <10 10 4-Chlorophenyl Phenyl Ether <10 <10 10 Chrysene <10 <10 10 Dibenzo(a,h)anthracene <10 <10 20 1,2-Dichlorobenzene <10 <10 10 1,3-Dichlorobenzene <10 <10 10 1,4-Dichlorobenzene <10 <10 10 3,3'-Dichlorobenzidine <20 <20 50 Diethyl Phthalate <10 <10 10 Dimethyl Phthalate <10 <10 10 Di-n-Butyl Phthalate <10 <10 10 2,4-Dinitrotoluene <10 <10 10 2,6-Dinitrotoluene <10 <10 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 8 Di-n-octyl Phthalate <10 <10 10 1,2-Diphenylhydrazine <10 <10 20 Fluoranthene <10 <10 10 Fluorene <10 <10 10 Hexachlorobenzene <10 <10 10 Hexachlorobutadiene <10 <10 10 Hexachlorocyclopentadiene <10 <10 10 Hexachloroethane <10 <10 20 Indeno(1,2,3-cd)pyrene <10 <10 20 Isophorone <10 <10 10 Naphthalene <10 <10 10 Nitrobenzene <10 <10 10 n-Nitrosodimethylamine <20 <20 50 n-Nitrosodi-n-Propylamine <10 <10 20 n-Nitrosodiphenylamine <10 <10 20 Phenanthrene <10 <10 10 Pyrene <10 <10 10 1,2,4-Trichlorobenzene <10 <10 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 9 Internal Outfall 101 (Former 01A)

A. Type of wastewater - the intermittent internal discharge from the liquid waste management system to Final Outfall 001 via the turbine condenser cooling system. The liquid waste management system receives low volume wastewater from the following sources, including but not limited to: the turbine and reactor building equipment and floor drains, primary plant water makeup, laboratory drains, and other low volume wastewater sources as defined in 40 CFR 423.

B. Location - at the point of discharge from the liquid waste management system prior to combining with the waters of Final Outfall 001 at Latitude 2959'40", Longitude 9028'16".

C. Treatment - treatment of these low volume wastewaters consists of:

- filtering/screening

- cationic and anionic polymer injection

- ion exchange

- neutralization/pH adjustment, when required

- distillation, when required D. Flow - Intermittent, (Max 30-Day) 0.0129 MGD E. Receiving waters - Discharge to Outfall 001 F. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand <10.0 <10.0 ---

Chemical Oxygen Demand 38.0 38.0 ---

Total Organic Carbon 10 10 ---

Total Suspended Solids 17.4 28.3 ---

Ammonia (as N) 3.0 3.0 ---

Temperature (Winter) NA NA ---

(Summer) NA NA ---

pH (Standard Units) 6.04 8.98 ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 10 Chlorine, Total Residual BA BA ---

Color (nM Units) 15.0 15.0 ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) 7.3 7.3 ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease 5.91 11.4 ---

Phosphorous, Total as (P) 0.44 0.44 ---

Radioactivity:

Alpha, Total (pCi/L) 259 259 ---

Beta, Total (pCi/L) 84,000 84,000 ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) 2.0 2.0 ---

Sulfide (as S) BA BA ---

Sulfite (as SO3) BA BA ---

Surfactants <0.1 <0.1 ---

Aluminum (Total) <0.5 <0.5 ---

Barium (Total) <0.2 <0.2 ---

Boron (Total) 598 1,425 ---

Cobalt (Total) BA BA ---

Iron (Total) <1.0 <1.0 ---

Magnesium (Total) <1.0 <1.0 ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) <600 <600 60 Arsenic (Total) <10 <10 10 Beryllium (Total) <50 <50 5 Cadmium (Total) <1 <1 1 Chromium (Total) <2 <2 10 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) <100 <100 10 Lead (Total) <31 <31 5 Mercury (Total) 3.9 3.9 0.2 Molybdenum (Total) <100 <100 30 Nickel (Total) Freshwater <400 <400 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <2 <2 2 Thallium (Total) <10 <10 10 Zinc (Total) <200 <200 20 Cyanide (Total) 25 25 10 Phenolics, Total Recoverable (4AAP) 14 14 5

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 11 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acrolein BA BA 50 Acrylonitrile BA BA 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform 15 15 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane <10 <10 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene BA BA 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane <10 <10 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <5 <5 10 2,4-Dichlorophenol <5 <5 10 2,4-Dimethylphenol <5 <5 10 4,6-Dinitro-o-Cresol <25 <25 50 2,4-Dinitrophenol <25 <25 50 2-Nitrophenol <5 <5 20 4-Nitrophenol <25 <25 50 p-Chloro-m-Cresol <5 <5 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 12 Pentachlorophenol <20 <20 50 Phenol <5 <5 10 2,4,6-Trichlorophenol <5 <5 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <5 <5 10 Acenaphthylene <5 <5 10 Anthracene <5 <5 10 Benzidine <50 <50 50 Benzo(a)anthracene <5 <5 10 Benzo(a)pyrene <5 <5 10 3,4-Benzofluoranthene <5 <5 10 Benzo(ghi)perylene <5 <5 20 Benzo(k)fluoranthene <5 <5 10 Bis(2-chloroethoxy) Methane <5 <5 10 Bis(2-chloroethyl) Ether <5 <5 10 Bis(2-chloroisopropyl) Ether BA BA 10 Bis(2-ethylhexyl) Phthalate 6.8 6.8 10 4-Bromophenyl Phenyl Ether <5 <5 10 Butylbenzyl Phthalate <5 <5 10 2-Chloronaphthalene <5 <5 10 4-Chlorophenyl Phenyl Ether <5 <5 10 Chrysene <5 <5 10 Dibenzo(a,h)anthracene <5 <5 20 1,2-Dichlorobenzene <5 <5 10 1,3-Dichlorobenzene <5 <5 10 1,4-Dichlorobenzene <5 <5 10 3,3'-Dichlorobenzidine <10 <10 50 Diethyl Phthalate <5 <5 10 Dimethyl Phthalate <5 <5 10 Di-n-Butyl Phthalate <5 <5 10 2,4-Dinitrotoluene <5 <5 10 2,6-Dinitrotoluene <5 <5 10 Di-n-octyl Phthalate <5 <5 10 1,2-Diphenylhydrazine BA BA 20 Fluoranthene <5 <5 10 Fluorene <5 <5 10 Hexachlorobenzene <5 <5 10 Hexachlorobutadiene <5 <5 10 Hexachlorocyclopentadiene <5 <5 10 Hexachloroethane <5 <5 20 Indeno(1,2,3-cd)pyrene <5 <5 20 Isophorone <5 <5 10 Naphthalene <5 <5 10 Nitrobenzene <5 <5 10 n-Nitrosodimethylamine BA BA 50 n-Nitrosodi-n-Propylamine <25 <25 20 n-Nitrosodiphenylamine <5 <5 20

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 13 Phenanthrene <5 <5 10 Pyrene <5 <5 10 1,2,4-Trichlorobenzene <5 <5 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available Internal Outfall 201 (Former 01B)

A. Type of wastewater - the intermittent internal discharge from the boron management system to Final Outfall 001 via the turbine condenser cooling system. The boron management system concentrates and recovers boron from low volume wastewaters for reuse within the plant. The boron management system receives low volume wastewater from the following sources, including but not limited to: the turbine and reactor building equipment and floor drains, primary plant water makeup, laboratory drains, and other low volume wastewater sources as defined in 40 CFR 423.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 14 B. Location - at the point of discharge from the boron management system prior to combining with the waters of Final Outfall 001 at Latitude 2959'40", Longitude 9028'16".

C. Treatment - treatment of these low volume wastewaters consists of:

- filtering/screening

- ion exchange

- neutralization/pH adjustment, when required

- distillation, when required D. Flow - Intermittent, (Max 30-Day) 0.0134 MGD E. Receiving waters - Discharge to Outfall 001 F. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand <10.0 <10.0 ---

Chemical Oxygen Demand <1.0 <1.0 ---

Total Organic Carbon <1.0 <1.0 ---

Total Suspended Solids <4.0 <4.0 ---

Ammonia (as N) <0.1 <0.1 ---

Temperature (Winter) NA NA ---

(Summer) NA NA ---

pH (Standard Units) 6.05 7.71 ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Color (nM Units) <5.0 <5.0 ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) <0.1 <0.1 ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease 5.5 9.2 ---

Phosphorous, Total as (P) <0.25 <0.25 ---

Radioactivity:

Alpha, Total (pCi/L) 0.5 0.5 ---

Beta, Total (pCi/L) 875 875 ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) <1.0 <1.0 ---

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 15 Sulfide (as S) BA BA ---

Sulfite (as SO3) BA BA ---

Surfactants BA BA ---

Aluminum (Total) <0.25 <0.25 ---

Barium (Total) <0.1 <0.1 ---

Boron (Total) 1,391 1,614 ---

Cobalt (Total) BA BA ---

Iron (Total) NA NA ---

Magnesium (Total) <0.5 <0.5 ---

Manganese (Total) <0.05 <0.05 ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) <300 <300 60 Arsenic (Total) <10 <10 10 Beryllium (Total) <25 <25 5 Cadmium (Total) <1 <1 1 Chromium (Total) <2 <2 10 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) <50 <50 10 Lead (Total) <31 <31 5 Mercury (Total) <0.2 <0.2 0.2 Molybdenum (Total) <50 <50 30 Nickel (Total) Freshwater <200 <200 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <2 <2 2 Thallium (Total) <10 <10 10 Zinc (Total) <100 <100 20 Cyanide (Total) 10 10 10 Phenolics, Total Recoverable (4AAP) <10 <10 5 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acrolein BA BA 50 Acrylonitrile BA BA 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 16 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform <5 <5 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane <10 <10 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene BA BA 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane <10 <10 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <5 <5 10 2,4-Dichlorophenol <5 <5 10 2,4-Dimethylphenol <5 <5 10 4,6-Dinitro-o-Cresol <25 <25 50 2,4-Dinitrophenol <25 <25 50 2-Nitrophenol <5 <5 20 4-Nitrophenol <25 <25 50 p-Chloro-m-Cresol <5 <5 10 Pentachlorophenol <20 <20 50 Phenol <5 <5 10 2,4,6-Trichlorophenol <5 <5 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <5 <5 10 Acenaphthylene <5 <5 10 Anthracene <5 <5 10 Benzidine <50 <50 50 Benzo(a)anthracene <5 <5 10 Benzo(a)pyrene <5 <5 10 3,4-Benzofluoranthene <5 <5 10 Benzo(ghi)perylene <5 <5 20

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 17 Benzo(k)fluoranthene <5 <5 10 Bis(2-chloroethoxy) Methane <5 <5 10 Bis(2-chloroethyl) Ether <5 <5 10 Bis(2-chloroisopropyl) Ether BA BA 10 Bis(2-ethylhexyl) Phthalate <5 <5 10 4-Bromophenyl Phenyl Ether <5 <5 10 Butylbenzyl Phthalate <5 <5 10 2-Chloronaphthalene <5 <5 10 4-Chlorophenyl Phenyl Ether <5 <5 10 Chrysene <5 <5 10 Dibenzo(a,h)anthracene <5 <5 20 1,2-Dichlorobenzene <5 <5 10 1,3-Dichlorobenzene <5 <5 10 1,4-Dichlorobenzene <5 <5 10 3,3'-Dichlorobenzidine <10 <10 50 Diethyl Phthalate <5 <5 10 Dimethyl Phthalate <5 <5 10 Di-n-Butyl Phthalate <5 <5 10 2,4-Dinitrotoluene <5 <5 10 2,6-Dinitrotoluene <5 <5 10 Di-n-octyl Phthalate <5 <5 10 1,2-Diphenylhydrazine BA BA 20 Fluoranthene <5 <5 10 Fluorene <5 <5 10 Hexachlorobenzene <5 <5 10 Hexachlorobutadiene <5 <5 10 Hexachlorocyclopentadiene <5 <5 10 Hexachloroethane <5 <5 20 Indeno(1,2,3-cd)pyrene <5 <5 20 Isophorone <5 <5 10 Naphthalene <5 <5 10 Nitrobenzene <5 <5 10 n-Nitrosodimethylamine BA BA 50 n-Nitrosodi-n-Propylamine <25 <25 20 n-Nitrosodiphenylamine <5 <5 20 Phenanthrene <5 <5 10 Pyrene <5 <5 10 1,2,4-Trichlorobenzene <5 <5 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 18 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available Internal Outfall 301 (Former 01C)

A. Type of wastewater - the intermittent internal discharge of filter flush water from the primary water treatment system to Final Outfall 001 via the turbine condenser cooling system. The primary water treatment system filters river water for various plant uses.

The filters of this system are flushed periodically with untreated river water to remove solids trapped in the filter beds.

B. Location - at the point of discharge from the primary water treatment system prior to combining with the waters of Final Outfall 001 at Latitude 2959'40", Longitude 9028'16".

C. Treatment - filter/screening

- separation

- polymer injection, when required D. Flow - Intermittent, (Max 30-Day) 0.0029 MGD E. Receiving waters - Discharge to Outfall 001 F. Effluent Data -Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L)

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 19 30-Day Max Daily Max Biochemical Oxygen Demand 33.5 33.5 ---

Chemical Oxygen Demand <5.0 <5.0 ---

Total Organic Carbon 4.4 4.4 ---

Total Suspended Solids 46 46 ---

Ammonia (as N) 0.828 0.828 ---

Temperature (Winter) NA NA ---

(Summer) NA NA ---

pH (Standard Units) 7.30 7.90 ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Color (nM Units) 25 25 ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) 1.28 1.28 ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease BA BA ---

Phosphorous, Total as (P) 0.53 0.53 ---

Radioactivity:

Alpha, Total (pCi/L) BA BA ---

Beta, Total (pCi/L) BA BA ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) 79.1 79.1 ---

Sulfide (as S) <0.02 <0.02 ---

Sulfite (as SO3) <2.0 <2.0 ---

Surfactants <0.04 <0.04 ---

Aluminum (Total) 0.478 0.478 ---

Barium (Total) <0.2 <0.2 ---

Boron (Total) BA BA ---

Cobalt (Total) BA BA ---

Iron (Total) 0.716 0.716 ---

Magnesium (Total) 15.0 15.0 ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) BA BA 60 Arsenic (Total) <10 <10 10 Beryllium (Total) <5 <5 5 Cadmium (Total) <1 <1 1 Chromium (Total) <10 <10 10 Chromium (3+) NA NA 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 20 Chromium (6+) NA NA 10 Copper (Total) <10 <10 10 Lead (Total) <3 <3 5 Mercury (Total) <0.2 <0.2 0.2 Molybdenum (Total) BA BA 30 Nickel (Total) Freshwater <40 <40 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <2 <2 2 Thallium (Total) <10 <10 10 Zinc (Total) 85.1 85.1 20 Cyanide (Total) <10 <10 10 Phenolics, Total Recoverable (4AAP) <50 <50 5 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acrolein <10 <10 50 Acrylonitrile <10 <10 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform 35.9 35.9 10 Dichlorobromomethane 16.3 16.3 10 Dichlorodifluoromethane BA BA 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene <5 <5 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 21 Trichloroethylene <5 <5 10 Trichlorofluoromethane BA BA 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <10 <10 10 2,4-Dichlorophenol <10 <10 10 2,4-Dimethylphenol <10 <10 10 4,6-Dinitro-o-Cresol <50 <50 50 2,4-Dinitrophenol <50 <50 50 2-Nitrophenol <10 <10 20 4-Nitrophenol <50 <50 50 p-Chloro-m-Cresol <10 <10 10 Pentachlorophenol <50 <50 50 Phenol <10 <10 10 2,4,6-Trichlorophenol <10 <10 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <10 <10 10 Acenaphthylene <10 <10 10 Anthracene <10 <10 10 Benzidine <30 <30 50 Benzo(a)anthracene <10 <10 10 Benzo(a)pyrene <10 <10 10 3,4-Benzofluoranthene <10 <10 10 Benzo(ghi)perylene <10 <10 20 Benzo(k)fluoranthene <10 <10 10 Bis(2-chloroethoxy) Methane <10 <10 10 Bis(2-chloroethyl) Ether <10 <10 10 Bis(2-chloroisopropyl) Ether <10 <10 10 Bis(2-ethylhexyl) Phthalate <10 <10 10 4-Bromophenyl Phenyl Ether <10 <10 10 Butylbenzyl Phthalate <10 <10 10 2-Chloronaphthalene <10 <10 10 4-Chlorophenyl Phenyl Ether <10 <10 10 Chrysene <10 <10 10 Dibenzo(a,h)anthracene <10 <10 20 1,2-Dichlorobenzene <10 <10 10 1,3-Dichlorobenzene <10 <10 10 1,4-Dichlorobenzene <10 <10 10 3,3'-Dichlorobenzidine <20 <20 50 Diethyl Phthalate <10 <10 10 Dimethyl Phthalate <10 <10 10 Di-n-Butyl Phthalate <10 <10 10 2,4-Dinitrotoluene <10 <10 10 2,6-Dinitrotoluene <10 <10 10 Di-n-octyl Phthalate <10 <10 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 22 1,2-Diphenylhydrazine <10 <10 20 Fluoranthene <10 <10 10 Fluorene <10 <10 10 Hexachlorobenzene <10 <10 10 Hexachlorobutadiene <10 <10 10 Hexachlorocyclopentadiene <10 <10 10 Hexachloroethane <10 <10 20 Indeno(1,2,3-cd)pyrene <10 <10 20 Isophorone <10 <10 10 Naphthalene <10 <10 10 Nitrobenzene <10 <10 10 n-Nitrosodimethylamine <20 <20 50 n-Nitrosodi-n-Propylamine <10 <10 20 n-Nitrosodiphenylamine <10 <10 20 Phenanthrene <10 <10 10 Pyrene <10 <10 10 1,2,4-Trichlorobenzene <10 <10 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available Internal Outfall 401 (Former 01D)

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 23 A. Type of wastewater - the intermittent internal discharge of steam generator blowdown and other low volume wastewaters to Final Outfall 001 via the turbine condenser cooling system. In addition to steam generator blowdown, low volume wastewater from other sources as defined in 40 CFR 423 are discharged from this outfall.

B. Location - at the point of discharge from the secondary steam plant system prior to combining with the waters of Final Outfall 001 at Latitude 2959'41", Longitude 9028'15".

C. Treatment - treatment of these wastewaters consists of:

- filtration

- ion exchange

- neutralization/pH adjustment, when required D. Flow - Intermittent, (Max 30-Day) 0.72 MGD E. Receiving waters - Discharge to Outfall 001 F. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand <2.0 <2.0 ---

Chemical Oxygen Demand <5.0 <5.0 ---

Total Organic Carbon <1.0 <1.0 ---

Total Suspended Solids 4.14 4.14 ---

Ammonia (as N) 0.086 0.086 ---

Temperature (Winter) NA NA ---

(Summer) NA NA ---

pH (Standard Units) 6.30 8.06 ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Color (nM Units) BA BA ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) BA BA ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease BA BA ---

Phosphorous, Total as (P) BA BA ---

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 24 Radioactivity:

Alpha, Total (pCi/L) NA NA ---

Beta, Total (pCi/L) NA NA ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) <10.0 <10.0 ---

Sulfide (as S) BA BA ---

Sulfite (as SO3) BA BA ---

Surfactants <0.1 <0.1 ---

Aluminum (Total) BA BA ---

Barium (Total) BA BA ---

Boron (Total) BA BA ---

Cobalt (Total) BA BA ---

Iron (Total) BA BA ---

Magnesium (Total) BA BA ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) BA BA 60 Arsenic (Total) <10 <10 10 Beryllium (Total) <5 <5 5 Cadmium (Total) <1 <1 1 Chromium (Total) <10 <10 10 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) <10 <10 10 Lead (Total) <3 <3 5 Mercury (Total) <0.2 <0.2 0.2 Molybdenum (Total) BA BA 30 Nickel (Total) Freshwater <40 <40 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <2 <2 2 Thallium (Total) <10 <10 10 Zinc (Total) <20 <20 20 Cyanide (Total) <10 <10 10 Phenolics, Total Recoverable (4AAP) <50 <50 5 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acrolein <10 <10 50 Acrylonitrile <10 <10 50

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 25 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform <5 <5 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane BA BA 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene <5 <5 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane BA BA 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <10 <10 10 2,4-Dichlorophenol <10 <10 10 2,4-Dimethylphenol <10 <10 10 4,6-Dinitro-o-Cresol <50 <50 50 2,4-Dinitrophenol <50 <50 50 2-Nitrophenol <10 <10 20 4-Nitrophenol <50 <50 50 p-Chloro-m-Cresol <10 <10 10 Pentachlorophenol <50 <50 50 Phenol <10 <10 10 2,4,6-Trichlorophenol <10 <10 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <10 <10 10 Acenaphthylene <10 <10 10 Anthracene <10 <10 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 26 Benzidine <30 <30 50 Benzo(a)anthracene <10 <10 10 Benzo(a)pyrene <10 <10 10 3,4-Benzofluoranthene <10 <10 10 Benzo(ghi)perylene <10 <10 20 Benzo(k)fluoranthene <10 <10 10 Bis(2-chloroethoxy) Methane <10 <10 10 Bis(2-chloroethyl) Ether <10 <10 10 Bis(2-chloroisopropyl) Ether <10 <10 10 Bis(2-ethylhexyl) Phthalate 23.4 23.4 10 4-Bromophenyl Phenyl Ether <10 <10 10 Butylbenzyl Phthalate <10 <10 10 2-Chloronaphthalene <10 <10 10 4-Chlorophenyl Phenyl Ether <10 <10 10 Chrysene <10 <10 10 Dibenzo(a,h)anthracene <10 <10 20 1,2-Dichlorobenzene <10 <10 10 1,3-Dichlorobenzene <10 <10 10 1,4-Dichlorobenzene <10 <10 10 3,3'-Dichlorobenzidine <20 <20 50 Diethyl Phthalate <10 <10 10 Dimethyl Phthalate <10 <10 10 Di-n-Butyl Phthalate <10 <10 10 2,4-Dinitrotoluene <10 <10 10 2,6-Dinitrotoluene <10 <10 10 Di-n-octyl Phthalate <10 <10 10 1,2-Diphenylhydrazine <10 <10 20 Fluoranthene <10 <10 10 Fluorene <10 <10 10 Hexachlorobenzene <10 <10 10 Hexachlorobutadiene <10 <10 10 Hexachlorocyclopentadiene <10 <10 10 Hexachloroethane <10 <10 20 Indeno(1,2,3-cd)pyrene <10 <10 20 Isophorone <10 <10 10 Naphthalene <10 <10 10 Nitrobenzene <10 <10 10 n-Nitrosodimethylamine <20 <20 50 n-Nitrosodi-n-Propylamine <10 <10 20 n-Nitrosodiphenylamine <10 <10 20 Phenanthrene <10 <10 10 Pyrene <10 <10 10 1,2,4-Trichlorobenzene <10 <10 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 27 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available Internal Outfall 501 A. Type of wastewater - the intermittent internal discharge from Auxiliary Component Cooling Water Basin A to Final Outfall 001 via the turbine condenser cooling system. Low volume wastewater sources contributing to the flow monitored at this outfall include, but are not limited to, auxiliary component cooling water, component cooling water, Mississippi River water used for flow testing, and stormwater.

B. Location - at the point of discharge from Auxiliary Component Cooling Water Basin A prior to combining with the waters of Final Outfall 001 at Latitude 2959'44", Longitude 9028'13".

C. Treatment - treatment of these low volume wastewaters consists of:

- sedimentation

- neutralization/pH adjustment, when required

- side stream ionization, when required

- filtration, when required D. Flow - Intermittent, (Max 30-Day) 0.26 MGD E. Receiving waters - Discharge to Outfall 001

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 28 F. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand <2.0 <2.0 ---

Chemical Oxygen Demand 26.0 26.0 ---

Total Organic Carbon 7.0 7.0 ---

Total Suspended Solids 4.3 4.3 ---

Ammonia (as N) <0.1 <0.1 ---

Temperature (Winter) NA NA ---

(Summer) NA NA ---

pH (Standard Units) 7.47 7.71 ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Color (nM Units) 15.0 15.0 ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) 0.9 0.9 ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease <1.0 <1.0 ---

Phosphorous, Total as (P) 2.5 2.5 ---

Radioactivity:

Alpha, Total (pCi/L) 0.5 0.5 ---

Beta, Total (pCi/L) 11.0 11.0 ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) 11.0 11.0 ---

Sulfide (as S) BA BA ---

Sulfite (as SO3) BA BA ---

Surfactants BA BA ---

Aluminum (Total) 0.09 0.09 ---

Barium (Total) <0.02 <0.02 ---

Boron (Total) 0.2 0.2 ---

Cobalt (Total) BA BA ---

Iron (Total) 0.5 0.5 ---

Magnesium (Total) 0.5 0.5 ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 29 METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) <50 <50 60 Arsenic (Total) <3 <3 10 Beryllium (Total) <4 <4 5 Cadmium (Total) <1 <1 1 Chromium (Total) 10 10 10 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) 20 20 10 Lead (Total) 6 6 5 Mercury (Total) 2.0 2.0 0.2 Molybdenum (Total) <10 <10 30 Nickel (Total) Freshwater <40 <40 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <0.5 <0.5 2 Thallium (Total) <5 <5 10 Zinc (Total) 1,720 1,720 20 Cyanide (Total) <10 <10 10 Phenolics, Total Recoverable (4AAP) <10 <10 5 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acrolein BA BA 50 Acrylonitrile BA BA 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform <5 <5 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane <10 <10 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 30 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene BA BA 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane <10 <10 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <5 <5 10 2,4-Dichlorophenol <5 <5 10 2,4-Dimethylphenol <5 <5 10 4,6-Dinitro-o-Cresol <50 <50 50 2,4-Dinitrophenol <50 <50 50 2-Nitrophenol <5 <5 20 4-Nitrophenol <50 <50 50 p-Chloro-m-Cresol <5 <5 10 Pentachlorophenol <50 <50 50 Phenol <5 <5 10 2,4,6-Trichlorophenol <5 <5 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <5 <5 10 Acenaphthylene <5 <5 10 Anthracene <5 <5 10 Benzidine <50 <50 50 Benzo(a)anthracene <5 <5 10 Benzo(a)pyrene <5 <5 10 3,4-Benzofluoranthene <5 <5 10 Benzo(ghi)perylene <5 <5 20 Benzo(k)fluoranthene <5 <5 10 Bis(2-chloroethoxy) Methane <5 <5 10 Bis(2-chloroethyl) Ether <5 <5 10 Bis(2-chloroisopropyl) Ether <5 <5 10 Bis(2-ethylhexyl) Phthalate <5 <5 10 4-Bromophenyl Phenyl Ether <5 <5 10 Butylbenzyl Phthalate <5 <5 10 2-Chloronaphthalene <5 <5 10 4-Chlorophenyl Phenyl Ether <5 <5 10 Chrysene <5 <5 10 Dibenzo(a,h)anthracene <5 <5 20 1,2-Dichlorobenzene <5 <5 10 1,3-Dichlorobenzene <5 <5 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 31 1,4-Dichlorobenzene <5 <5 10 3,3'-Dichlorobenzidine <5 <5 50 Diethyl Phthalate <5 <5 10 Dimethyl Phthalate <5 <5 10 Di-n-Butyl Phthalate <5 <5 10 2,4-Dinitrotoluene <5 <5 10 2,6-Dinitrotoluene <5 <5 10 Di-n-octyl Phthalate <5 <5 10 1,2-Diphenylhydrazine <5 <5 20 Fluoranthene <5 <5 10 Fluorene <5 <5 10 Hexachlorobenzene <5 <5 10 Hexachlorobutadiene <5 <5 10 Hexachlorocyclopentadiene <5 <5 10 Hexachloroethane <5 <5 20 Indeno(1,2,3-cd)pyrene <5 <5 20 Isophorone <5 <5 10 Naphthalene <5 <5 10 Nitrobenzene <5 <5 10 n-Nitrosodimethylamine <5 <5 50 n-Nitrosodi-n-Propylamine <5 <5 20 n-Nitrosodiphenylamine <5 <5 20 Phenanthrene <5 <5 10 Pyrene <5 <5 10 1,2,4-Trichlorobenzene <5 <5 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 32 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available Internal Outfall 601 A. Type of wastewater - the intermittent internal discharge from Auxiliary Component Cooling Water Basin B to Final Outfall 001 via the turbine condenser cooling system. Low volume wastewater sources contributing to the flow monitored at this outfall include, but are not limited to, auxiliary component cooling water, component cooling water, Mississippi River water used for flow testing, and stormwater.

B. Location - at the point of discharge from Auxiliary Component Cooling Water Basin B prior to combining with the waters of Final Outfall 001 at Latitude 2959'44", Longitude 9028'13".

C. Treatment - treatment of these low volume wastewaters consists of:

- sedimentation

- neutralization/pH adjustment, when required

- side stream ionization, when required

- filtration, when required D. Flow - Intermittent, (Max 30-Day) 0.26 MGD E. Receiving waters - Discharge to Outfall 001 F. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand <2.0 <2.0 ---

Chemical Oxygen Demand 26.0 26.0 ---

Total Organic Carbon 7.0 7.0 ---

Total Suspended Solids 4.3 4.3 ---

Ammonia (as N) <0.1 <0.1 ---

Temperature (Winter) NA NA ---

(Summer) NA NA ---

pH (Standard Units) 7.47 7.71 ---

(min) (max)

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 33 PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Color (nM Units) 15.0 15.0 ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) 0.9 0.9 ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease <1.0 <1.0 ---

Phosphorous, Total as (P) 2.5 2.5 ---

Radioactivity:

Alpha, Total (pCi/L) 0.5 0.5 ---

Beta, Total (pCi/L) 11.0 11.0 ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) 11.0 11.0 ---

Sulfide (as S) BA BA ---

Sulfite (as SO3) BA BA ---

Surfactants BA BA ---

Aluminum (Total) 0.09 0.09 ---

Barium (Total) <0.02 <0.02 ---

Boron (Total) 0.2 0.2 ---

Cobalt (Total) BA BA ---

Iron (Total) 0.5 0.5 ---

Magnesium (Total) 0.5 0.5 ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) <50 <50 60 Arsenic (Total) <3 <3 10 Beryllium (Total) <4 <4 5 Cadmium (Total) <1 <1 1 Chromium (Total) 10 10 10 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) 20 20 10 Lead (Total) 6 6 5 Mercury (Total) 2.0 2.0 0.2 Molybdenum (Total) <10 <10 30 Nickel (Total) Freshwater <40 <40 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <0.5 <0.5 2 Thallium (Total) <5 <5 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 34 Zinc (Total) 1,720 1,720 20 Cyanide (Total) <10 <10 10 Phenolics, Total Recoverable (4AAP) <10 <10 5 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acrolein BA BA 50 Acrylonitrile BA BA 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform <5 <5 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane <10 <10 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene BA BA 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane <10 <10 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <5 <5 10 2,4-Dichlorophenol <5 <5 10 2,4-Dimethylphenol <5 <5 10 4,6-Dinitro-o-Cresol <50 <50 50

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 35 2,4-Dinitrophenol <50 <50 50 2-Nitrophenol <5 <5 20 4-Nitrophenol <50 <50 50 p-Chloro-m-Cresol <5 <5 10 Pentachlorophenol <50 <50 50 Phenol <5 <5 10 2,4,6-Trichlorophenol <5 <5 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <5 <5 10 Acenaphthylene <5 <5 10 Anthracene <5 <5 10 Benzidine <50 <50 50 Benzo(a)anthracene <5 <5 10 Benzo(a)pyrene <5 <5 10 3,4-Benzofluoranthene <5 <5 10 Benzo(ghi)perylene <5 <5 20 Benzo(k)fluoranthene <5 <5 10 Bis(2-chloroethoxy) Methane <5 <5 10 Bis(2-chloroethyl) Ether <5 <5 10 Bis(2-chloroisopropyl) Ether <5 <5 10 Bis(2-ethylhexyl) Phthalate <5 <5 10 4-Bromophenyl Phenyl Ether <5 <5 10 Butylbenzyl Phthalate <5 <5 10 2-Chloronaphthalene <5 <5 10 4-Chlorophenyl Phenyl Ether <5 <5 10 Chrysene <5 <5 10 Dibenzo(a,h)anthracene <5 <5 20 1,2-Dichlorobenzene <5 <5 10 1,3-Dichlorobenzene <5 <5 10 1,4-Dichlorobenzene <5 <5 10 3,3'-Dichlorobenzidine <5 <5 50 Diethyl Phthalate <5 <5 10 Dimethyl Phthalate <5 <5 10 Di-n-Butyl Phthalate <5 <5 10 2,4-Dinitrotoluene <5 <5 10 2,6-Dinitrotoluene <5 <5 10 Di-n-octyl Phthalate <5 <5 10 1,2-Diphenylhydrazine <5 <5 20 Fluoranthene <5 <5 10 Fluorene <5 <5 10 Hexachlorobenzene <5 <5 10 Hexachlorobutadiene <5 <5 10 Hexachlorocyclopentadiene <5 <5 10 Hexachloroethane <5 <5 20 Indeno(1,2,3-cd)pyrene <5 <5 20 Isophorone <5 <5 10 Naphthalene <5 <5 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 36 Nitrobenzene <5 <5 10 n-Nitrosodimethylamine <5 <5 50 n-Nitrosodi-n-Propylamine <5 <5 20 n-Nitrosodiphenylamine <5 <5 20 Phenanthrene <5 <5 10 Pyrene <5 <5 10 1,2,4-Trichlorobenzene <5 <5 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available Internal Outfall 701 A. Type of wastewater - the intermittent internal discharge of cooling tower blowdown and low volume wastewaters from Dry Cooling Tower Sump #1 to Final Outfall 001 via the turbine condenser cooling system. In addition to the wet cooling tower blowdown, low volume wastewater from various sources as defined in 40 CFR 423 are discharged from this outfall. Low volume wastewater sources contributing to this monitored flow include, but are not limited to, wet cooling tower leakage, auxiliary component cooling

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 37 water, component cooling water, and stormwater. Previously monitored effluent from the Yard Oil Separator System (Internal Outfall 104) is infrequently discharged through this outfall as a result of maintenance activities. Optional discharge to Final Outfall 004 via the plant drainage ditches may occur during periods when the circulating water system is unavailable.

B. Location - at the point of discharge from Dry Cooling Tower Sump

1 prior to combining with the waters of Final Outfall 001 or Final Outfall 004 at Latitude 2959'44", Longitude 9028'13".

C. Treatment - treatment of these wastewaters consists of:

- sedimentation

- neutralization/pH adjustment, when required

- side stream ionization, when required

- filtration, when required D. Flow - Intermittent, (Max 30-Day) 0.01 MGD E. Receiving waters - Discharge to Outfall 001 or the optional discharge to Outfall 004 F. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand <2.0 <2.0 ---

Chemical Oxygen Demand 26.0 26.0 ---

Total Organic Carbon 7.0 7.0 ---

Total Suspended Solids 4.3 4.3 ---

Ammonia (as N) <0.1 <0.1 ---

Temperature (Winter) NA NA ---

(Summer) NA NA ---

pH (Standard Units) 7.47 7.71 ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Color (nM Units) 15.0 15.0 ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) 0.9 0.9 ---

Organic Nitrogen, Total as (N) BA BA ---

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 38 Oil and Grease <1.0 <1.0 ---

Phosphorous, Total as (P) 2.5 2.5 ---

Radioactivity:

Alpha, Total (pCi/L) 0.5 0.5 ---

Beta, Total (pCi/L) 11.0 11.0 ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) 11.0 11.0 ---

Sulfide (as S) BA BA ---

Sulfite (as SO3) BA BA ---

Surfactants BA BA ---

Aluminum (Total) 0.09 0.09 ---

Barium (Total) <0.02 <0.02 ---

Boron (Total) 0.2 0.2 ---

Cobalt (Total) BA BA ---

Iron (Total) 0.5 0.5 ---

Magnesium (Total) 0.5 0.5 ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) <50 <50 60 Arsenic (Total) <3 <3 10 Beryllium (Total) <4 <4 5 Cadmium (Total) <1 <1 1 Chromium (Total) 10 10 10 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) 20 20 10 Lead (Total) 6 6 5 Mercury (Total) 2.0 2.0 0.2 Molybdenum (Total) <10 <10 30 Nickel (Total) Freshwater <40 <40 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <0.5 <0.5 2 Thallium (Total) <5 <5 10 Zinc (Total) 1,720 1,720 20 Cyanide (Total) <10 <10 10 Phenolics, Total Recoverable (4AAP) <10 <10 5 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L)

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 39 30-Day Max Daily Max Acrolein BA BA 50 Acrylonitrile BA BA 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform <5 <5 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane <10 <10 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene BA BA 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane <10 <10 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <5 <5 10 2,4-Dichlorophenol <5 <5 10 2,4-Dimethylphenol <5 <5 10 4,6-Dinitro-o-Cresol <50 <50 50 2,4-Dinitrophenol <50 <50 50 2-Nitrophenol <5 <5 20 4-Nitrophenol <50 <50 50 p-Chloro-m-Cresol <5 <5 10 Pentachlorophenol <50 <50 50 Phenol <5 <5 10 2,4,6-Trichlorophenol <5 <5 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 40 Acenaphthene <5 <5 10 Acenaphthylene <5 <5 10 Anthracene <5 <5 10 Benzidine <50 <50 50 Benzo(a)anthracene <5 <5 10 Benzo(a)pyrene <5 <5 10 3,4-Benzofluoranthene <5 <5 10 Benzo(ghi)perylene <5 <5 20 Benzo(k)fluoranthene <5 <5 10 Bis(2-chloroethoxy) Methane <5 <5 10 Bis(2-chloroethyl) Ether <5 <5 10 Bis(2-chloroisopropyl) Ether <5 <5 10 Bis(2-ethylhexyl) Phthalate <5 <5 10 4-Bromophenyl Phenyl Ether <5 <5 10 Butylbenzyl Phthalate <5 <5 10 2-Chloronaphthalene <5 <5 10 4-Chlorophenyl Phenyl Ether <5 <5 10 Chrysene <5 <5 10 Dibenzo(a,h)anthracene <5 <5 20 1,2-Dichlorobenzene <5 <5 10 1,3-Dichlorobenzene <5 <5 10 1,4-Dichlorobenzene <5 <5 10 3,3'-Dichlorobenzidine <5 <5 50 Diethyl Phthalate <5 <5 10 Dimethyl Phthalate <5 <5 10 Di-n-Butyl Phthalate <5 <5 10 2,4-Dinitrotoluene <5 <5 10 2,6-Dinitrotoluene <5 <5 10 Di-n-octyl Phthalate <5 <5 10 1,2-Diphenylhydrazine <5 <5 20 Fluoranthene <5 <5 10 Fluorene <5 <5 10 Hexachlorobenzene <5 <5 10 Hexachlorobutadiene <5 <5 10 Hexachlorocyclopentadiene <5 <5 10 Hexachloroethane <5 <5 20 Indeno(1,2,3-cd)pyrene <5 <5 20 Isophorone <5 <5 10 Naphthalene <5 <5 10 Nitrobenzene <5 <5 10 n-Nitrosodimethylamine <5 <5 50 n-Nitrosodi-n-Propylamine <5 <5 20 n-Nitrosodiphenylamine <5 <5 20 Phenanthrene <5 <5 10 Pyrene <5 <5 10 1,2,4-Trichlorobenzene <5 <5 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 41 Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available Internal Outfall 801 A. Type of wastewater - the intermittent internal discharge of cooling tower blowdown and low volume wastewaters from Dry Cooling Tower Sump #2 to Final Outfall 001 via the turbine condenser cooling system. In addition to the wet cooling tower blowdown, low volume wastewater from various sources as defined in 40 CFR 423 are discharged from this outfall. Low volume wastewater sources contributing to this monitored flow include, but are not limited to, wet cooling tower leakage, auxiliary component cooling water, component cooling water, and stormwater. Previously monitored effluent from the Yard Oil Separator System (Internal Outfall 104) is infrequently discharged through this outfall as a result of maintenance activities. Optional discharge to Final Outfall 004 via the plant drainage ditches may occur during periods when the circulating water system is unavailable.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 42 B. Location - at the point of discharge from Dry Cooling Tower Sump

2 prior to combining with the waters of Final Outfall 001 or Final Outfall 004 at Latitude 2959'44", Longitude 9028'13".

C. Treatment - treatment of these wastewaters consists of:

- sedimentation

- neutralization/pH adjustment, when required

- side stream ionization, when required

- filtration, when required D. Flow - Intermittent, (Max 30-Day) 0.01 MGD E. Receiving waters - Discharge to Outfall 001 or the optional discharge to Outfall 004 F. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand <2.0 <2.0 ---

Chemical Oxygen Demand 26.0 26.0 ---

Total Organic Carbon 7.0 7.0 ---

Total Suspended Solids 4.3 4.3 ---

Ammonia (as N) <0.1 <0.1 ---

Temperature (Winter) NA NA ---

(Summer) NA NA ---

pH (Standard Units) 7.47 7.71 ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Color (nM Units) 15.0 15.0 ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) 0.9 0.9 ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease <1.0 <1.0 ---

Phosphorous, Total as (P) 2.5 2.5 ---

Radioactivity:

Alpha, Total (pCi/L) 0.5 0.5 ---

Beta, Total (pCi/L) 11.0 11.0 ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) 11.0 11.0 ---

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 43 Sulfide (as S) BA BA ---

Sulfite (as SO3) BA BA ---

Surfactants BA BA ---

Aluminum (Total) 0.09 0.09 ---

Barium (Total) <0.02 <0.02 ---

Boron (Total) 0.2 0.2 ---

Cobalt (Total) BA BA ---

Iron (Total) 0.5 0.5 ---

Magnesium (Total) 0.5 0.5 ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) <50 <50 60 Arsenic (Total) <3 <3 10 Beryllium (Total) <4 <4 5 Cadmium (Total) <1 <1 1 Chromium (Total) 10 10 10 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) 20 20 10 Lead (Total) 6 6 5 Mercury (Total) 2.0 2.0 0.2 Molybdenum (Total) <10 <10 30 Nickel (Total) Freshwater <40 <40 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <0.5 <0.5 2 Thallium (Total) <5 <5 10 Zinc (Total) 1,720 1,720 20 Cyanide (Total) <10 <10 10 Phenolics, Total Recoverable (4AAP) <10 <10 5 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acrolein BA BA 50 Acrylonitrile BA BA 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 44 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform <5 <5 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane <10 <10 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene BA BA 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane <10 <10 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <5 <5 10 2,4-Dichlorophenol <5 <5 10 2,4-Dimethylphenol <5 <5 10 4,6-Dinitro-o-Cresol <50 <50 50 2,4-Dinitrophenol <50 <50 50 2-Nitrophenol <5 <5 20 4-Nitrophenol <50 <50 50 p-Chloro-m-Cresol <5 <5 10 Pentachlorophenol <50 <50 50 Phenol <5 <5 10 2,4,6-Trichlorophenol <5 <5 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <5 <5 10 Acenaphthylene <5 <5 10 Anthracene <5 <5 10 Benzidine <50 <50 50 Benzo(a)anthracene <5 <5 10 Benzo(a)pyrene <5 <5 10 3,4-Benzofluoranthene <5 <5 10 Benzo(ghi)perylene <5 <5 20

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 45 Benzo(k)fluoranthene <5 <5 10 Bis(2-chloroethoxy) Methane <5 <5 10 Bis(2-chloroethyl) Ether <5 <5 10 Bis(2-chloroisopropyl) Ether <5 <5 10 Bis(2-ethylhexyl) Phthalate <5 <5 10 4-Bromophenyl Phenyl Ether <5 <5 10 Butylbenzyl Phthalate <5 <5 10 2-Chloronaphthalene <5 <5 10 4-Chlorophenyl Phenyl Ether <5 <5 10 Chrysene <5 <5 10 Dibenzo(a,h)anthracene <5 <5 20 1,2-Dichlorobenzene <5 <5 10 1,3-Dichlorobenzene <5 <5 10 1,4-Dichlorobenzene <5 <5 10 3,3'-Dichlorobenzidine <5 <5 50 Diethyl Phthalate <5 <5 10 Dimethyl Phthalate <5 <5 10 Di-n-Butyl Phthalate <5 <5 10 2,4-Dinitrotoluene <5 <5 10 2,6-Dinitrotoluene <5 <5 10 Di-n-octyl Phthalate <5 <5 10 1,2-Diphenylhydrazine <5 <5 20 Fluoranthene <5 <5 10 Fluorene <5 <5 10 Hexachlorobenzene <5 <5 10 Hexachlorobutadiene <5 <5 10 Hexachlorocyclopentadiene <5 <5 10 Hexachloroethane <5 <5 20 Indeno(1,2,3-cd)pyrene <5 <5 20 Isophorone <5 <5 10 Naphthalene <5 <5 10 Nitrobenzene <5 <5 10 n-Nitrosodimethylamine <5 <5 50 n-Nitrosodi-n-Propylamine <5 <5 20 n-Nitrosodiphenylamine <5 <5 20 Phenanthrene <5 <5 10 Pyrene <5 <5 10 1,2,4-Trichlorobenzene <5 <5 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 46 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available Internal Outfall 901 A. Type of wastewater - the intermittent internal discharge of metal cleaning wastewaters from internal components of plant equipment to Final Outfall 001 via the turbine condenser cooling system.

Metal cleaning wastewaters (both chemical and non-chemical) result from the cleaning washes/rinses of various plant equipment components including, but not limited to, the steam generator, the cooling water heat exchangers, and piping.

B. Location - at the point of discharge from the mobile cleaning process unit(s) prior to combining with the waters of Final Outfall 001 at Latitude 2959'47", Longitude 9028'8".

C. Treatment - treatment of these wastewaters consists of:

- chemical precipitation

- neutralization

- sedimentation

- pre-aeration, when required

- flocculation, when required

- ion exchange, when required D. Flow - Intermittent, (Max 30-Day) 0.36 MGD E. Receiving waters - Discharge to Outfall 001 F. Effluent Data - not available, new outfall

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 47 Outfall 004 A. Type of wastewater - the intermittent discharge from the plant drainage ditch system to 40 Arpent Canal. Outfall 004 is a new outfall that consolidates Outfalls 04A and 04B from former NPDES Permit LA0007374. Most of the effluent monitored at this outfall is 85% stormwater runoff. Besides stormwater, potable water from the fire water system, maintenance wastewaters including, but not limited to: hydrostatic test water, air conditioning condensate, low volume wastewaters from various sources as defined in 40 CFR 423, and previously monitored effluents exit the facility via Outfall 004. Low volume sources contributing wastewater to this outfall include, but are not limited to, reverse osmosis reject water and demineralized water. The plant drainage ditch system receives treated discharge from the yard oil separator system (Internal Outfall 104), untreated vehicle wash wastewater (Internal Outfall 204), and during maintenance activities discharges from Dry Cooling Tower Sump #1 (Internal Outfall 701) and Dry Cooling Tower Sump #2 (Internal Outfall 801).

B. Location - at the point of discharge from the plant drainage ditch system where the plant stormwater runoff, the previously monitored effluents, and other infrequently discharged low volume wastewaters discharge at Latitude 2959'19", Longitude 9028'25" prior to entering 40 Arpent Canal.

C. Treatment - none.

D. Flow - Intermittent, (Max 30-Day) 0.784 MGD E. Receiving waters - 40 Arpent Canal thence to Lac Des Allemands F. Basin and segment - Barataria Basin, Segment 020202 G. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand <2.0 <2.0 ---

Chemical Oxygen Demand <5.0 <5.0 ---

Total Organic Carbon 3.7 3.7 ---

Total Suspended Solids 7.0 7.0 ---

Ammonia (as N) 0.230 0.230 ---

Temperature (Winter) NA NA ---

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 48 (Summer) NA NA ---

pH (Standard Units) 6.88 8.30 ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Color (nM Units) 15.0 15.0 ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) 0.614 0.614 ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease <5.9 <5.9 ---

Phosphorous, Total as (P) 0.186 0.186 ---

Radioactivity:

Alpha, Total (pCi/L) NA NA ---

Beta, Total (pCi/L) NA NA ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) 38.7 38.7 ---

Sulfide (as S) <1.0 <1.0 ---

Sulfite (as SO3) <2.0 <2.0 ---

Surfactants <0.04 <0.04 ---

Aluminum (Total) 0.415 0.415 ---

Barium (Total) <0.2 <0.2 ---

Boron (Total) NA NA ---

Cobalt (Total) BA BA ---

Iron (Total) 0.795 0.795 ---

Magnesium (Total) 11.3 11.3 ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) BA BA 60 Arsenic (Total) BA BA 10 Beryllium (Total) <5 <5 5 Cadmium (Total) BA BA 1 Chromium (Total) <10 <10 10 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) <10 <10 10 Lead (Total) BA BA 5 Mercury (Total) <0.2 <0.2 0.2 Molybdenum (Total) <10 <10 30 Nickel (Total) Freshwater <40 <40 40 Nickel (Total) Marine NA NA 5

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 49 Selenium (Total) BA BA 5 Silver (Total) BA BA 2 Thallium (Total) BA BA 10 Zinc (Total) 39.2 39.2 20 Cyanide (Total) <10 <10 10 Phenolics, Total Recoverable (4AAP) <50 <50 5 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acrolein <10 <10 50 Acrylonitrile <10 <10 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform <5 <5 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane BA BA 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene BA BA 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane BA BA 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <10 <10 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 50 2,4-Dichlorophenol <10 <10 10 2,4-Dimethylphenol <10 <10 10 4,6-Dinitro-o-Cresol <25 <25 50 2,4-Dinitrophenol <25 <25 50 2-Nitrophenol <10 <10 20 4-Nitrophenol <25 <25 50 p-Chloro-m-Cresol <10 <10 10 Pentachlorophenol <25 <25 50 Phenol <10 <10 10 2,4,6-Trichlorophenol <10 <10 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <10 <10 10 Acenaphthylene <10 <10 10 Anthracene <10 <10 10 Benzidine <30 <30 50 Benzo(a)anthracene <10 <10 10 Benzo(a)pyrene <10 <10 10 3,4-Benzofluoranthene <10 <10 10 Benzo(ghi)perylene <10 <10 20 Benzo(k)fluoranthene <10 <10 10 Bis(2-chloroethoxy) Methane <10 <10 10 Bis(2-chloroethyl) Ether <10 <10 10 Bis(2-chloroisopropyl) Ether <10 <10 10 Bis(2-ethylhexyl) Phthalate <10 <10 10 4-Bromophenyl Phenyl Ether <10 <10 10 Butylbenzyl Phthalate <10 <10 10 2-Chloronaphthalene <10 <10 10 4-Chlorophenyl Phenyl Ether <10 <10 10 Chrysene <10 <10 10 Dibenzo(a,h)anthracene <10 <10 20 1,2-Dichlorobenzene <10 <10 10 1,3-Dichlorobenzene <10 <10 10 1,4-Dichlorobenzene <10 <10 10 3,3'-Dichlorobenzidine <20 <20 50 Diethyl Phthalate <10 <10 10 Dimethyl Phthalate <10 <10 10 Di-n-Butyl Phthalate <10 <10 10 2,4-Dinitrotoluene <10 <10 10 2,6-Dinitrotoluene <10 <10 10 Di-n-octyl Phthalate <10 <10 10 1,2-Diphenylhydrazine <10 <10 20 Fluoranthene <10 <10 10 Fluorene <10 <10 10 Hexachlorobenzene <10 <10 10 Hexachlorobutadiene <10 <10 10 Hexachlorocyclopentadiene <10 <10 10 Hexachloroethane <10 <10 20

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 51 Indeno(1,2,3-cd)pyrene <10 <10 20 Isophorone <10 <10 10 Naphthalene <10 <10 10 Nitrobenzene <10 <10 10 n-Nitrosodimethylamine <10 <10 50 n-Nitrosodi-n-Propylamine <10 <10 20 n-Nitrosodiphenylamine <10 <10 20 Phenanthrene <10 <10 10 Pyrene <10 <10 10 1,2,4-Trichlorobenzene <10 <10 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available Internal Outfall 104 (Former 002)

A. Type of wastewater - the intermittent internal discharge from the yard oil separator system to Final Outfall 004 via a plant drainage ditch. Wastewater sources contributing to the flow monitored at Outfall 104 include auxiliary boiler blowdown, stormwater, and low volume wastewaters from various sources as

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 52 defined by 40 CFR 423. Low volume sources contributing wastewater to this outfall include, but are not limited to, secondary water system drains, system leakage, auxiliary boiler sumps, turbine building equipment and floor drains, turbine building floor wash downs, and laboratory drains. Optional discharge to Internal Outfall 701 or 801 may occur during maintenance periods.

B. Location - at the point of discharge from the yard oil separator system prior to combining with the waters of Final Outfall 004 or Internal Outfall 701 or Internal Outfall 801 at Latitude 2959'37", Longitude 9028'15".

C. Treatment - treatment of these wastewaters consists of:

- sedimentation

- flotation

- oil/water separation

- polymer injection, when required

- neutralization/pH adjustment, when required

- flocculation, when required

- filtration, when required D. Flow - Intermittent, (Max 30-Day) 0.0221 MGD E. Receiving waters - Discharge to Outfall 004, with option to discharge to either Internal Outfall 701, or Internal Outfall 801 during maintenance activities.

F. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand <2.0 <2.0 ---

Chemical Oxygen Demand 9.1 9.1 ---

Total Organic Carbon 3.0 3.0 ---

Total Suspended Solids 23.9 29.6 ---

Ammonia (as N) 0.197 0.197 ---

Temperature (Winter) NA NA ---

(Summer) NA NA ---

pH (Standard Units) 6.62 8.24 ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 53 Color (nM Units) 10 10 ---

Fecal Coliform (col/100 mL) BA BA ---

Fluoride BA BA ---

Nitrate-Nitrite (N) 0.05 0.05 ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease 10.1 18.5 ---

Phosphorous, Total as (P) 0.23 0.23 ---

Radioactivity:

Alpha, Total (pCi/L) 0.05 0.05 ---

Beta, Total (pCi/L) 0.01 0.01 ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) <10.0 <10.0 ---

Sulfide (as S) <0.020 <0.020 ---

Sulfite (as SO3) <2.0 <2.0 ---

Surfactants <0.1 <0.1 ---

Aluminum (Total) <0.2 <0.2 ---

Barium (Total) <0.2 <0.2 ---

Boron (Total) BA BA ---

Cobalt (Total) BA BA ---

Iron (Total) 0.249 0.249 ---

Magnesium (Total) <5.0 <5.0 ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) BA BA 60 Arsenic (Total) <10 <10 10 Beryllium (Total) <5 <5 5 Cadmium (Total) <1 <1 1 Chromium (Total) <10 <10 10 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) <10 <10 10 Lead (Total) <3 <3 5 Mercury (Total) <0.2 <0.2 0.2 Molybdenum (Total) <50 <50 30 Nickel (Total) Freshwater <40 <40 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <2 <2 2 Thallium (Total) <10 <10 10 Zinc (Total) 84.5 84.5 20 Cyanide (Total) <10 <10 10 Phenolics, Total Recoverable (4AAP) <50 <50 5

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 54 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acrolein <10 <10 50 Acrylonitrile <10 <10 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform <5 <5 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane BA BA 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride <5 <5 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene <5 <5 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane BA BA 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <10 <10 10 2,4-Dichlorophenol <10 <10 10 2,4-Dimethylphenol <10 <10 10 4,6-Dinitro-o-Cresol <50 <50 50 2,4-Dinitrophenol <50 <50 50 2-Nitrophenol <10 <10 20 4-Nitrophenol <50 <50 50 p-Chloro-m-Cresol <10 <10 10 Pentachlorophenol <50 <50 50

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 55 Phenol <10 <10 10 2,4,6-Trichlorophenol <10 <10 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <10 <10 10 Acenaphthylene <10 <10 10 Anthracene <10 <10 10 Benzidine <30 <30 50 Benzo(a)anthracene <10 <10 10 Benzo(a)pyrene <10 <10 10 3,4-Benzofluoranthene <10 <10 10 Benzo(ghi)perylene <10 <10 20 Benzo(k)fluoranthene <10 <10 10 Bis(2-chloroethoxy) Methane <10 <10 10 Bis(2-chloroethyl) Ether <10 <10 10 Bis(2-chloroisopropyl) Ether <10 <10 10 Bis(2-ethylhexyl) Phthalate <10 <10 10 4-Bromophenyl Phenyl Ether <10 <10 10 Butylbenzyl Phthalate <10 <10 10 2-Chloronaphthalene <10 <10 10 4-Chlorophenyl Phenyl Ether <10 <10 10 Chrysene <10 <10 10 Dibenzo(a,h)anthracene <10 <10 20 1,2-Dichlorobenzene <10 <10 10 1,3-Dichlorobenzene <10 <10 10 1,4-Dichlorobenzene <10 <10 10 3,3'-Dichlorobenzidine <20 <20 50 Diethyl Phthalate <10 <10 10 Dimethyl Phthalate <10 <10 10 Di-n-Butyl Phthalate <10 <10 10 2,4-Dinitrotoluene <10 <10 10 2,6-Dinitrotoluene <10 <10 10 Di-n-octyl Phthalate <10 <10 10 1,2-Diphenylhydrazine <10 <10 20 Fluoranthene <10 <10 10 Fluorene <10 <10 10 Hexachlorobenzene <10 <10 10 Hexachlorobutadiene <10 <10 10 Hexachlorocyclopentadiene <10 <10 10 Hexachloroethane <10 <10 20 Indeno(1,2,3-cd)pyrene <10 <10 20 Isophorone <10 <10 10 Naphthalene <10 <10 10 Nitrobenzene <10 <10 10 n-Nitrosodimethylamine <20 <20 50 n-Nitrosodi-n-Propylamine <10 <10 20 n-Nitrosodiphenylamine <10 <10 20 Phenanthrene <10 <10 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 56 Pyrene <10 <10 10 1,2,4-Trichlorobenzene <10 <10 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available Internal Outfall 204 (New Outfall)

A. Type of wastewater - the intermittent internal discharge of vehicle wash wastewater.

B. Location - at the point of discharge from the area where vehicles will be washed prior to combining with the waters of Final Outfall 004.

C. Treatment - none.

D. Flow - Intermittent.

E. Receiving waters - Discharge to Outfall 004.

F. Effluent Data - not available, new outfall.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 57 Outfall 005 A. Type of wastewater - the intermittent discharge from the Entergy Energy Education Center sewage treatment plant to 40 Arpent Canal.

In addition to the sanitary wastewater, a de minimis discharge from the HVAC unit enters the sewage treatment plant.

B. Location - at the point of discharge from the sewage treatment plant prior to combining with the waters of the 40 Arpent Canal at Latitude 2958'53", Longitude 9028'35".

C. Treatment - a package sewage treatment plant with chlorination used for disinfection.

D. Flow - Intermittent, (Max 30-Day) 0.0018 MGD.

E. Receiving waters - 40 Arpent Canal thence to Lac Des Allemands F. Basin and segment - Barataria Basin, Segment 020202 G. Effluent Data - The following is a summary of the effluent characteristics reported in the revised permit application (EPA Form 2C) received on June 15, 1998.

POLLUTANT EFFLUENT PART A (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Biochemical Oxygen Demand 28.0 28.0 ---

Chemical Oxygen Demand 56.9 56.9 ---

Total Organic Carbon 18.6 18.6 ---

Total Suspended Solids 24 27 ---

Ammonia (as N) 17.9 17.9 ---

Temperature (Winter) NA NA ---

(Summer) NA NA ---

pH (Standard Units) 7.20 8.27 ---

(min) (max)

PART B (mg/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Bromide BA BA ---

Chlorine, Total Residual BA BA ---

Color (nM Units) 25 25 ---

Fecal Coliform (col/100 mL) <2.0 <2.0 ---

Fluoride BA BA ---

Nitrate-Nitrite (N) 3.77 3.77 ---

Organic Nitrogen, Total as (N) BA BA ---

Oil and Grease <5.60 <5.60 ---

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 58 Phosphorous, Total as (P) 2.8 2.8 ---

Radioactivity:

Alpha, Total (pCi/L) BA BA ---

Beta, Total (pCi/L) BA BA ---

Radium, Total (pCi/L) BA BA ---

Radium 226, Total (pCi/L) BA BA ---

Sulfate (as SO4) 1,510 1,510 ---

Sulfide (as S) <1.0 <1.0 ---

Sulfite (as SO3) <2.0 <2.0 ---

Surfactants <0.04 <0.04 ---

Aluminum (Total) BA BA ---

Barium (Total) BA BA ---

Boron (Total) BA BA ---

Cobalt (Total) BA BA ---

Iron (Total) BA BA ---

Magnesium (Total) BA BA ---

Manganese (Total) BA BA ---

Tin (Total) BA BA ---

Titanium (Total) BA BA ---

METALS, CYANIDE & TOTAL PHENOL(g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Antimony (Total) BA BA 60 Arsenic (Total) <10 <10 10 Beryllium (Total) <5 <5 5 Cadmium (Total) 0.161 0.161 1 Chromium (Total) <10 <10 10 Chromium (3+) NA NA 10 Chromium (6+) NA NA 10 Copper (Total) 118 118 10 Lead (Total) <3 <3 5 Mercury (Total) <0.2 <0.2 0.2 Molybdenum (Total) BA BA 30 Nickel (Total) Freshwater <40 <40 40 Nickel (Total) Marine NA NA 5 Selenium (Total) <5 <5 5 Silver (Total) <1 <1 2 Thallium (Total) <10 <10 10 Zinc (Total) <20 <20 20 Cyanide (Total) 19 19 10 Phenolics, Total Recoverable (4AAP) <50 <50 5 DIOXIN (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2,3,7,8-TCDD BA BA 0.00001 VOLATILE COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 59 Acrolein <10 <10 50 Acrylonitrile <10 <10 50 Benzene <5 <5 10 Bis(Chloromethyl)Ether BA BA 10 Bromoform <5 <5 10 Carbon Tetrachloride <5 <5 10 Chlorobenzene <5 <5 10 Chlorodibromomethane <5 <5 10 Chloroethane <10 <10 50 2-Chloroethylvinylether <5 <5 10 Chloroform 19.7 19.7 10 Dichlorobromomethane <5 <5 10 Dichlorodifluoromethane BA BA 10 1,1-Dichloroethane <5 <5 10 1,2-Dichloroethane <5 <5 10 1,1-Dichloroethylene <5 <5 10 1,2-Dichloropropane <5 <5 10 1,3-Dichloropropylene <5 <5 10 Ethylbenzene <5 <5 10 Methyl Bromide [Bromomethane] <10 <10 50 Methyl Chloride [Chloromethane] <10 <10 50 Methylene Chloride 13.9 13.9 20 1,1,2,2-Tetrachloroethane <5 <5 10 Tetrachloroethylene <5 <5 10 Toluene <5 <5 10 1,2-trans-Dichloroethylene BA BA 10 1,1,1-Trichloroethane <5 <5 10 1,1,2-Trichloroethane <5 <5 10 Trichloroethylene <5 <5 10 Trichlorofluoromethane BA BA 10 Vinyl Chloride <10 <10 10 ACID COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max 2-Chlorophenol <10 <10 10 2,4-Dichlorophenol <10 <10 10 2,4-Dimethylphenol <10 <10 10 4,6-Dinitro-o-Cresol <25 <25 50 2,4-Dinitrophenol <25 <25 50 2-Nitrophenol <10 <10 20 4-Nitrophenol <25 <25 50 p-Chloro-m-Cresol <10 <10 10 Pentachlorophenol <25 <25 50 Phenol <10 <10 10 2,4,6-Trichlorophenol <10 <10 10 BASE/NEUTRAL COMPOUNDS (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Acenaphthene <10 <10 10

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 60 Acenaphthylene <10 <10 10 Anthracene <10 <10 10 Benzidine <30 <30 50 Benzo(a)anthracene <10 <10 10 Benzo(a)pyrene <10 <10 10 3,4-Benzofluoranthene <10 <10 10 Benzo(ghi)perylene <10 <10 20 Benzo(k)fluoranthene <10 <10 10 Bis(2-chloroethoxy) Methane <10 <10 10 Bis(2-chloroethyl) Ether <10 <10 10 Bis(2-chloroisopropyl) Ether <10 <10 10 Bis(2-ethylhexyl) Phthalate <10 <10 10 4-Bromophenyl Phenyl Ether <10 <10 10 Butylbenzyl Phthalate <10 <10 10 2-Chloronaphthalene <10 <10 10 4-Chlorophenyl Phenyl Ether <10 <10 10 Chrysene <10 <10 10 Dibenzo(a,h)anthracene <10 <10 20 1,2-Dichlorobenzene <10 <10 10 1,3-Dichlorobenzene <10 <10 10 1,4-Dichlorobenzene <10 <10 10 3,3'-Dichlorobenzidine <20 <20 50 Diethyl Phthalate <10 <10 10 Dimethyl Phthalate <10 <10 10 Di-n-Butyl Phthalate <10 <10 10 2,4-Dinitrotoluene <10 <10 10 2,6-Dinitrotoluene <10 <10 10 Di-n-octyl Phthalate <10 <10 10 1,2-Diphenylhydrazine <10 <10 20 Fluoranthene <10 <10 10 Fluorene <10 <10 10 Hexachlorobenzene <10 <10 10 Hexachlorobutadiene <10 <10 10 Hexachlorocyclopentadiene <10 <10 10 Hexachloroethane <10 <10 20 Indeno(1,2,3-cd)pyrene <10 <10 20 Isophorone <10 <10 10 Naphthalene <10 <10 10 Nitrobenzene <10 <10 10 n-Nitrosodimethylamine <10 <10 50 n-Nitrosodi-n-Propylamine <10 <10 20 n-Nitrosodiphenylamine <10 <10 20 Phenanthrene <10 <10 10 Pyrene <10 <10 10 1,2,4-Trichlorobenzene <10 <10 10 PESTICIDES (g/L, UNLESS STATED) MQL (g/L) 30-Day Max Daily Max Aldrin BA BA 0.05

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 61 Alpha-BHC BA BA 0.05 Beta-BHC BA BA 0.05 Gamma-BHC [Lindane] BA BA 0.05 Delta-BHC BA BA 0.05 Chlordane BA BA 0.2 4,4'-DDT BA BA 0.1 4,4'-DDE [p,p-DDX] BA BA 0.1 4,4'-DDD [p,p-TDE] BA BA 0.1 Dieldrin BA BA 0.1 Alpha-Endosulfan BA BA 0.1 Beta-Endosulfan BA BA 0.1 Endosulfan Sulfate BA BA 0.1 Endrin BA BA 0.1 Endrin Aldehyde BA BA 0.1 Heptachlor BA BA 0.05 Heptachlor Epoxide BA BA 0.05 PCB-1242 BA BA 1.0 PCB-1254 BA BA 1.0 PCB-1221 BA BA 1.0 PCB-1232 BA BA 1.0 PCB-1248 BA BA 1.0 PCB-1260 BA BA 1.0 PCB-1016 BA BA 1.0 Toxaphene BA BA 5.0 BA - Believed Absent NA - Not Available VIII. Proposed Permit Limits:

The specific effluent limitations and/or conditions will be found in the draft permit. Development and calculation of permit limits are detailed in the Permit Limit Rationale section below.

Summary of Proposed Changes From the Current NPDES Permit:

A. Final Outfall 001:

1. Increase the instantaneous daily maximum temperature limit from 110F to 118F.

9

2. Increase the daily maximum heat limit from 8.5 x 10 BTU/hr 9

to 9.5 x 10 BTU/hr.

3. Change the acute freshwater whole effluent toxicity biomonitoring frequency from quarterly to once per year.

B. Internal Outfall 101 (Former 01A):

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 62

1. Only daily maximum reporting of flow in MGD rather than the daily average flow limit of 0.0288 MGD is proposed due to the intermittent nature of the wastestream.

2. Only daily maximum limitations are proposed due to the intermittent nature of the wastestream.

C. Internal Outfall 201 (Former 01B):

1. Only daily maximum reporting of flow in MGD rather than the daily average flow limit of 0.0288 MGD is proposed due to the intermittent nature of the wastestream.

2. Only daily maximum limitations are proposed due to the intermittent nature of the wastestream.

D. Internal Outfall 301 (Former 01C):

1. Only daily maximum reporting of flow in MGD is proposed due to the intermittent nature of the wastestream.

2. Change the reporting requirement for clarifying agents.

E. Internal Outfall 401 (Former 01D):

1. Only daily maximum reporting of flow in MGD is proposed due to the intermittent nature of the wastestream.

2. Only daily maximum limitation for Total Suspended Solids is proposed due to the intermittent nature of the wastestream.

3. Establish daily maximum limitation for oil and grease (O&G) at 20 mg/l.

4. Establish monitoring frequency of 1/week for TSS, Oil &

Grease, and pH, when discharging.

F. Internal Outfall 501 (New Outfall):

1. Add Internal Outfall 501 for the intermittent discharge from Auxiliary Component Cooling Water Basin A to Final Outfall 001 via the turbine condenser cooling system.

2. The daily maximum reporting of flow in MGD is proposed due to the intermittent nature of the wastestream.

3. Establish daily maximum limitation for total organic carbon (TOC) at 50 mg/l.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 63

4. Establish daily maximum limitation for total suspended solids (TSS) at 100 mg/l.

5. Establish daily maximum limitation for oil and grease (O&G) at 20 mg/l.

6. Establish limitation for pH of not less than 6.0 standard units nor greater than 9.0 standard units.

7. Establish monitoring frequency of 1/week for TOC, TSS, Oil &

Grease, and pH, when discharging.

G. Internal Outfall 601 (New Outfall):

1. Add Internal Outfall 601 for the intermittent discharge from Auxiliary Component Cooling Water Basin B to Final Outfall 001 via the turbine condenser cooling system.

2. The daily maximum reporting of flow in MGD is proposed due to the intermittent nature of the wastestream.

3. Establish daily maximum limitation for total organic carbon (TOC) at 50 mg/l.

4. Establish daily maximum limitation for total suspended solids (TSS) at 100 mg/l.

5. Establish daily maximum limitation for oil and grease (O&G) at 20 mg/l.

6. Establish limitation for pH of not less than 6.0 standard units nor greater than 9.0 standard units.

7. Establish monitoring frequency of 1/week for TOC, TSS, Oil &

Grease, and pH, when discharging.

H. Internal Outfall 701 (New Outfall):

1. Add Internal Outfall 701 for the intermittent discharge of cooling tower blowdown and low volume wastewaters from Dry Cooling Tower Sump #1 and the occasional discharge of previously monitored effluent from Internal Outfall 104 to Final Outfall 001 via the turbine condenser cooling system or Final Outfall 004.

2. The daily maximum reporting of flow in MGD is proposed due to the intermittent nature of the wastestream.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 64

3. Establish daily maximum limitation for total organic carbon (TOC) at 50 mg/l.

4. Establish daily maximum limitation for total suspended solids (TSS) at 100 mg/l.

5. Establish daily maximum limitation for oil and grease (O&G) at 20 mg/l.

6. Establish limitation for pH of not less than 6.0 standard units nor greater than 9.0 standard units.

7. Establish daily maximum limitation for free available chlorine (FAC) at 0.5 mg/l, when discharging cooling tower blowdown.

8. Establish daily maximum limitation for total chromium at 0.2 mg/l, when discharging cooling tower blowdown.

9. Establish daily maximum limitation for total zinc at 1.0 mg/l, when discharging cooling tower blowdown.

10. Establish monitoring frequency of 1/month for TOC, TSS, Oil

& Grease, pH, FAC, total chromium, and total zinc, when discharging.

I. Internal Outfall 801 (New Outfall):

1. Add Internal Outfall 801 for the intermittent discharge of cooling tower blowdown and low volume wastewaters from Dry Cooling Tower Sump #2 and the occasional discharge of previously monitored effluent from Internal Outfall 104 to Final Outfall 001 via the turbine condenser cooling system or Final Outfall 004.

2. The daily maximum reporting of flow in MGD is proposed due to the intermittent nature of the wastestream.

3. Establish daily maximum limitation for total organic carbon (TOC) at 50 mg/l.

4. Establish daily maximum limitation for total suspended solids (TSS) at 100 mg/l.

5. Establish daily maximum limitation for oil and grease (O&G) at 20 mg/l.

6. Establish limitation for pH of not less than 6.0 standard units nor greater than 9.0 standard units.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 65

7. Establish daily maximum limitation for free available chlorine (FAC) at 0.5 mg/l, when discharging cooling tower blowdown.

8. Establish daily maximum limitation for total chromium at 0.2 mg/l, when discharging cooling tower blowdown.

9. Establish daily maximum limitation for total zinc at 1.0 mg/l, when discharging cooling tower blowdown.

10. Establish monitoring frequency of 1/month for TOC, TSS, Oil

& Grease, pH, FAC, total chromium, and total zinc, when discharging.

J. Internal Outfall 901 (New Outfall):

1. Add Internal Outfall 901 for the intermittent, mobile discharge of metal cleaning wastewaters from internal components of plant equipment to Final Outfall 001 via the turbine condenser cooling system.

2. The daily maximum reporting of flow in MGD is proposed due to the intermittent nature of the wastestream.

3. Establish daily maximum limitation for total suspended solids (TSS) at 100 mg/l.

4. Establish daily maximum limitation for oil and grease (O&G) at 20 mg/l.

5. Establish limitation for pH of not less than 6.0 standard units nor greater than 9.0 standard units.

6. Establish daily maximum limitation for total copper at 1.0 mg/l.

7. Establish daily maximum limitation for total iron at 1.0 mg/l.

8. Establish monitoring frequency of 1/week for TSS, Oil &

Grease, pH, total copper, and total iron, when discharging.

K. Final Outfall 004 (New Outfall):

1. Add Final Outfall 004 for the intermittent discharge from the plant drainage ditch system to 40 Arpent Canal and the occasional discharge from Internal Outfall 701 and Internal Outfall 801.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 66

2. The daily maximum reporting of flow in MGD is proposed due to the intermittent nature of the wastestream.

3. Establish daily maximum limitation for total organic carbon (TOC) at 50 mg/l.

4. Establish daily maximum limitation for oil and grease (O&G) at 15 mg/l.

5. Require discharge limits for total suspended solids (TSS) of 100 mg/l for daily maximum, when discharging low volume wastewaters during maintenance activities.

6. Establish limitation for pH of not less than 6.0 standard units nor greater than 9.0 standard units.

7. Establish monitoring frequency for TOC, O&G, and pH at once per quarter.

8. Establish monitoring frequency for TSS at once per quarter, when discharging low volume wastewaters.

L. Internal Outfall 104 (Former 002):

1. Add an optional flow path for occasional discharges from the yard oil separator system to Dry Cooling Tower Sump #1 (Internal Outfall 701) and/or Dry Cooling Tower Sump #2 (Internal Outfall 801) as a result of maintenance activities.

2. Only daily maximum limitations are proposed due to the intermittent nature of the wastestream.

3. Change the monitoring frequency for TSS, O&G, and pH to once per month.

M. Internal Outfall 204 (New Outfall):

1. Add Internal Outfall 204 for the intermittent discharge of vehicle wash wastewaters to Final Outfall 004.

2. The monthly average and daily maximum reporting of flow in MGD is proposed.

3. Establish limitations for chemical oxygen demand (COD) at 200 mg/l and 300 mg/l, monthly average and daily maximum respectively.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 67

4. Establish daily maximum limitation for total suspended solids (TSS) at 45 mg/l.

5. Establish daily maximum limitation for oil and grease (O&G) at 15 mg/l.

6. Establish limitation for pH of not less than 6.0 standard units nor greater than 9.0 standard units.

7. Establish inventory requirement for the soaps and/or detergents used.

8. Establish monitoring frequency for COD, TSS, O&G, and pH at once per quarter.

N. Final Outfall 005 (New Outfall):

1. Add Final Outfall 005 for the intermittent discharge from the Entergy Energy Education Center sewage treatment plant to 40 Arpent Canal.

2. The weekly average reporting of flow in MGD is proposed due to the intermittent nature of the wastestream.

3. Establish weekly average limitation for total suspended solids (TSS) at 45 mg/l.

4. Establish weekly average limitation for biological oxygen demand (5 days) (BOD5) at 45 mg/l.

5. Establish weekly average limitation for fecal coliform at 400 colonies/100 ml.

6. Establish limitation for pH of not less than 6.0 standard units nor greater than 9.0 standard units.

7. Establish monitoring frequency for TSS, pH, BOD5, and fecal coliform at once per six months.

O. Part II:

1. Specify that the 126 priority pollutants as listed in 40 CFR 423 Appendix A, other than total chromium and total zinc, will not be detected in the effluent in accordance with 40 CFR 423.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 68 IX. Permit Limit Rationale:

The following section sets forth the principal facts and the significant factual, legal, methodological, and policy questions considered in preparing the draft permit. Also set forth are any calculations or other explanations of the derivation of specific effluent limitations and conditions, including a citation to the applicable effluent limitation guideline or performance standard provisions as required under LAC 33:IX.2361/40 CFR Part 122.44 and reasons why they are applicable or an explanation of how the alternate effluent limitations were developed.

A. TECHNOLOGY-BASED VERSUS WATER QUALITY STANDARDS-BASED EFFLUENT LIMITATIONS AND CONDITIONS Following regulations promulgated at LAC 33:IX.2361.L.2.b/40 CFR Part 122.44(l)(2)(ii), the draft permit limits are based on either technology-based effluent limits pursuant to LAC 33:IX.2361.A/40 CFR Part 122.44(a) or on State water quality standards and requirements pursuant to LAC 33:IX.2361.D/40 CFR Part 122.44(d), whichever are more stringent.

B. TECHNOLOGY-BASED EFFLUENT LIMITATIONS AND CONDITIONS Regulations promulgated at LAC 33:IX.2361.A/40 CFR Part 122.44(a) require technology-based effluent limitations to be placed in LPDES permits based on effluent limitations guidelines where applicable, on best professional judgement (BPJ) in the absence of guidelines, or on a combination of the two.

The permittee is subject to Best Practicable Control Technology Currently Available (BPT) and Best Available Technology Economically Achievable (BAT) effluent limitation guidelines listed below:

Manufacturing Operation Guideline Steam Electric Power Generating Point Source Category 40 CFR 423 Outfall 001 This outfall is the continuous discharge from the turbine condenser cooling system to the Mississippi River. The turbine condenser cooling system receives once-through non-contact cooling water from the Mississippi River that flows through the main condenser, the steam generator blowdown heat exchangers, and the turbine building closed cooling heat exchanger.

Previously monitored discharges from Internal Outfalls 101 (former 01A), 201 (former 01B), 301 (former 01C), 401 (former 01D), 501, 601, 701, 801, and 901 also are discharged via Outfall 001. The combined flow volume of these intermittent internal outfalls (estimated at 1.65 MGD) is significantly less than the maximum 30 day average flow of the once-through non-contact cooling water through Outfall 001 (1,346 MGD). The effluent limitations proposed for Outfall 001 in the draft LPDES permit are as follows:

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 69 Parameter Monthly Daily Average Maximum Flow Report 1,518 MGD Temperature (F) Report 118F Heat N/A 9.5 x 109 BTU/Hour Boron N/A 0.2 mg/l Total Residual Chlorine N/A 211 lbs/day Flow The flow limitation of 1,518 MGD for daily maximum at Outfall 001 is retained from the current NPDES permit. This maximum daily flow limit was requested by Louisiana Power and Light Company (LP&L, predecessor to Entergy) in a letter to EPA Region 6 dated March 1, 1985. This letter requested an increase in the daily maximum flow of the once-through non-contact cooling water from the limit of 1,445 MGD then in effect to 1,518 MGD which LP&L described as the "maximum hydraulic capability" of the turbine condenser cooling system. This request was granted in a letter from EPA Region 6 to LP&L dated May 30, 1985.

Discharge flow is to be determined from calibrated pumping curves or calculated using appropriate heat balance methodology.

Boron The current NPDES permit established a calculated daily maximum discharge limit of 0.2 mg/l for boron at Outfall 001. The fact sheet for this NPDES permit stated this boron limitation was based on BPJ since boron is for reactivity control in the reactor. The limit is retained on the same basis.

Total Residual Chlorine The current NPDES permit established daily maximum discharge limits of 211 lbs/day and 0.2 mg/l for total residual chlorine (TRC) at Outfall 001. The limit is based on 40 CFR 423.13(b)(1)(BAT). Since the discharge from Outfall 001 is continuous and not significantly variable, only the mass limitation is continued.

Site-Specific Consideration Temperature and Heat In an application addendum submitted June 15, 1998, the permittee requested that the temperature and heat discharge limits included in the current NPDES permit, 110F and 8.5 x 109 BTU/Hour, be increased to 118 F and 9.5 x 109 BTU/Hour, respectively, or removed from the new permit entirely.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 70 The permittee bases the request for an increase in temperature and heat discharge limits on a planned "power uprate" to be implemented in the near future at Waterford 3. On August 26, 1996, this Office issued a letter of no objection to the permittees request for a power uprate. However, the permit limitations and conditions in the current permit were not adjusted to accommodate a power uprate and compliance with those limitations was still required. Current limits can not be met with a production increase, especially during months when customer demand for electricity is high. This increase in the megawatt output of the facility will result in more waste heat that will need to be transferred from the turbine condenser to the once-through non-contact cooling water. Because the turbine condenser cooling system will continue to operate within its current hydraulic capability, the removal of this additional waste heat will result in higher discharge temperatures for the once-through non-contact cooling water.

Due to the Nuclear Regulatory Commission (NRC) approved design of the plant itself, full power operation, following a power uprate, would result in an increase in temperature and heat discharged in once-through non-contact cooling water. The following is an explanation of how this occurs.

Thermal energy is generated from the nuclear fuel inside a reactor.

Reactor coolant is circulated inside the reactor coolant system to carry that thermal energy to the secondary coolant via a non-contact steam generator. Steam produced from the steam generator drives the turbine-generator producing electricity. Exhaust steam from the outlet of the turbine is condensed by the non-contact cooling water in the circulating water system. Approximately one-third of the heat produced by the reactor is absorbed by the non-contact cooling water in the circulating water system which discharges through Outfall 001 to the Mississippi River. Therefore to increase the electrical output, the thermal energy produced by the reactor must increase proportionally to the increase of electricity. As a result of the increase in reactor thermal power, more heat is absorbed by the non-contact cooling water in the circulating water system.

Both the temperature and heat limitations included in the current permit are technology-based limitations. 40 CFR 423 promulgated as commanded by Section 304 of the Clean Water Act did not establish temperature or heat limitations.

Therefore, best professional judgment (BPJ) was used by EPA, Region VI, to establish the Best Available Technology (BAT), economically achievable, for the current temperature and heat limitations contained in the NPDES permit.

9 The heat limit currently in effect, 8.5 x 10 BTU/Hour, resulted from the Demonstration under Section 316(a) of the Clean Water Act submitted by LP&L in April 1979. On page 35 of this document, LP&L requested that EPA establish 8.5 x 109 BTU/Hour as an alternative thermal limitation for Waterford 3. An internal EPA Region 6 memo dated August 24, 1979 discussed the EPA review of this 316(a) demonstration. In this memo, the EPA reviewer concurred with LP&Ls conclusion that the alternative thermal limitation "adequately

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 71 regulates the amount of heat discharged to the Mississippi River from this facility such that it protects the balanced indigenous population". However, the EPA reviewer continued "although the demonstration requests no maximum thermal limitation be placed in the permit, I recommend an instantaneous thermal maximum of 110 F be placed in the permit to further insure protection of the aquatic species". The 110 F stems from a maximum instantaneous heat discharge of 8.5 x 109 BTU/Hour, an instantaneous flow rate of 1,000 MGD for the once-through non-contact cooling water, and a typical maximum stream temperature of 86 F.

The definition of a British thermal unit (BTU) is the amount of heat required to raise the temperature of one pound of water one degree Fahrenheit at or near 39.2F. Ignoring the slight variation in thermal conductivity of water due to its ambient temperature, the temperature increase of the cooling water conveying the waste heat from the turbine condenser can be estimated by dividing the waste heat in BTU/hour by the cooling water flow in pounds per hour (lbs/hour).

The conversion of the cooling water flow from MGD to lbs/hour is accomplished as follows:

[(1,000 x 106 gal/day) x (8.337 lbs/gal)] [24 hr/day] = 347,375,000 lbs/hour Dividing the alternative heat limit by the converted cooling water flow yields:

(8.5 x 109 BTU/Hour) (347,375,000 lbs/hour) = 24.5F Adding this to the typical maximum stream temperature produces the following discharge temperature:

86F + 24.5F = 110.5F or approximately 110F Applying the same methodology for a heat limit of 9.5 x 109 BTU/Hour and a maximum fresh water stream temperature of 90F (specified in LAC 33:IX.1113.C.4) produces a discharge temperature of approximately 118F.

Using a flow of 1,000 MGD in these calculations is reasonable because the long term average flow for Outfall 001 is 1,085 MGD according to the permit application.

To further ensure attainment of LAC 33:IX.1113.C.4.b.i.(a), the 5F allowable rise of temperature above ambient was applied at the edge of the mixing zone.

Appendix A illustrates that a violation of the above citation would not occur with a discharge limitation for temperature at 118F.

The Demonstration under Section 316(a) of the Clean Water Act classified the Mississippi River near Waterford 3 as "an area of low potential impact for

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 72 thermal discharges". This classification resulted from: (1) the determination that this stretch of the Mississippi River was not "unique" for any shellfish, fish, or wildlife; and (2) the realization that most of the cross-sectional area available for flow in the river would be unaffected by the thermal plume.

Therefore, the indigenous population of shellfish, fish, and wildlife, which are present in abundance in areas away from Waterford 3, either would have ample opportunity to pass by the facility without encountering elevated stream temperatures or would only experience the higher temperatures for such brief periods that no deleterious effects would result.

The 316(a) demonstration found that no threatened or endangered species were present near Waterford 3. The species that were present also were abundant in other areas of the Mississippi River. The study also determined that no special fish spawning habitat existed near the facility.

The 316(a) demonstration documented thermal model results for various flow and temperature conditions reflecting seasonal variations in this stretch of the Mississippi River. The models accounted for the historically calibrated thermal discharges for the nearby Waterford 1 and 2 and Little Gypsy steam electric generating plants, as well as for the 8.5 x 109 BTU/Hour anticipated for Waterford 3. A worst case scenario of an extreme low flow of 100,000 cubic feet per second (cfs) was modeled in the study. This minimum flow in the lower Mississippi River is maintained by the Old River Control Structure operated by the U.S. Army Corps of Engineers and is less than the 7Q10 flow for this segment of the river (141,955 cfs). Under this worst case, extreme low flow situation, the model determined that less than 15% of the cross-sectional area of the river would experience temperature increases of 5 F.

This thermal plume also stayed near the surface of the river extending no deeper than 10 feet.

In the Final Environmental Statement Related to the Operation of Waterford Steam Electric Station, Unit No. 3, the Nuclear Regulatory Commission (NRC) documented model studies conducted by their staff to independently confirm the results presented by LP&L in the 316(a) demonstration. Using a different model, the NRC produced results that were "generally in agreement" with those presented by LP&L. The NRC model produced a slightly larger combined thermal plume or mixing zone, but the environmental statement concluded that operation of Waterford 3 would be "in compliance with the Louisiana Water Quality Criteria relating to temperature". With all three plants operating at peak loads during extreme low flow conditions, an adequate zone of passage (83% of the river cross-sectional area) will still remain for aquatic species to pass by facilities without entering the combined thermal mixing zone. Species entering the mixing zone probably would pass through it in one hour or less, minimizing the impact of the elevated temperatures. Also natural ambient river surface temperatures above 86 F should only occur about 2.5% of the time.

Applying the percentage increase of thermal discharge at Waterford 3 to the model worst case, extreme low flow thermal plume should provide a conservative

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 73 estimate of the combined thermal mixing zone that would result from the planned power uprate. This should be very conservative due to Waterford 3 contributing less heat to the river than Waterford 1 and 2 and Little Gypsy combined. Increasing the heat discharge to 9.5 x 109 BTU/Hour from 8.5 x 109 BTU/Hour constitutes a 12% gain. Applying this proportional gain to the worst case combined thermal plume (17% of river cross-sectional area) yields an anticipated combined thermal mixing zone of 19%. This leaves approximately 81% of the river flow unaffected by the temperature increase after the Waterford 3 power uprate, even under extreme low flow conditions.

LAC 33:IX.1115.C.7 specifies the mixing zone for streams with 7Q10 flow greater than 100 cfs as either 100 cfs or 1/3 of the flow, whichever is greater. The anticipated thermal mixing zone of 19% is substantially less than 33% of cross-sectional area or 1/3 of the flow. Therefore, the increased heat discharge and temperature limits requested for Outfall 001 are expected to meet Louisiana Water Quality Criteria for temperature.

In response to this Office's concern expressed in the August 26, 1996 letter, the combined thermal discharges from Waterford 1 and 2, Waterford 3, and Little Gypsy were evaluated in respect to the cooling tower operations of a downstream facility, Union Carbide. This facility is 1.6 river miles down from Waterford 3. In 1971, the U.S. Department of Interior, Geological Survey in cooperation with Louisiana Department of Public Works, prepared Hydrologic and Quality Characteristics of the Lower Mississippi River, Technical Report Number 5. The purpose of the report was to further an understanding of the hydrologic and quality characteristics of the lower Mississippi River, including the effects of industrial development on water quality and the ability of the river to assimilate wastes. In evaluating the effects of heated effluent, the report states "Very little vertical mixing occurred because the heated water was less dense and floated on the surface."

Because the heated water is less dense than the cooler ambient river water, the combined thermal mixing zone remains near the surface. As mentioned earlier, the worst case thermal plume extends no more than about 10 feet deep.

Since the intake structure for Union Carbide is 3 feet below mean sea level, no rise in temperature above ambient would be detected. Additionally, Union Carbide's cooling water enters the facility via an internal canal. This canal would effectively return river water to ambient temperature prior to entering the facility's cooling system.

Technology to achieve the current limitations for temperature and heat does exist through the use of cooling towers. However, that technology is not economically achievable for Waterford 3. This facility is regulated by the NRC and any change in the operation or equipment must be approved by that agency. For the relatively small increase in temperature and heat caused by the power uprate, modifying the plant itself is not economically justified.

In conclusion, this permit proposes to increase the temperature to 118F and heat to 9.5 x 109 BTU/hour as requested by the permittee.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 74 Internal Outfalls In accordance with 40 CFR 122.56(b)(1)(ii), the following is an explanation for the establishment of Internal Outfalls 101, 201, 301, 401, 501, 601, 701, 801, 901, 104, and 204. Certain permit effluent limitations at the point of discharge are impractical because at the final discharge point the wastes at the point discharge are so diluted as to make monitoring impracticable. pH must be monitored internally at the outfalls internal to Outfall 001 because the design of the plant does not allow for the measurement to be taken prior to entering the Mississippi River. Therefore, in accordance with 40 CFR 122.46(h)(2) the internal outfalls described below are established.

Internal Outfall 101 (Former 01A) - Liquid Waste Management System This outfall is the intermittent internal discharge from the liquid waste management system to Final Outfall 001 via the turbine condenser cooling system. The liquid waste management system receives low volume wastewater from the following sources, including but not limited to: the turbine and reactor building equipment and floor drains, primary plant water makeup, laboratory drains, and other low volume wastewater sources as defined in 40 CFR 423. The effluent limitations proposed for Outfall 101 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L Flow, MGD N/A Report Total Suspended Solids N/A 100 Oil and Grease N/A 20 Boron N/A Report pH, standard units 6.0 (min) 9.0 (max)

Flow The permittee has requested to change the daily average flow limitation from 0.0288 MGD to Report. The daily average flow limitation of 0.0288 MGD at Internal Outfall 101 (former 01A) is in the current NPDES permit. This average daily flow limit was requested by LP&L in a letter to EPA Region 6 dated March 1, 1985. This letter requested an increase in the daily average flow of the liquid waste management system from the limit of 0.0093 MGD then in effect to 0.0288 MGD which LP&L described as necessary "to accommodate efficient operation of the plant". This request was granted in a letter from EPA Region 6 to LP&L dated May 30, 1985.

The permittee contends that this flow limit at Internal Outfall 101 unnecessarily restricts plant operations without adding to the quality of the discharges from the facility. Because discharges from the liquid waste management system occur in batches and each batch requires monitoring prior to

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 75 discharge, all the effluent conveyed past Internal Outfall 101 meets the discharge criteria specified in the permit, regardless of flow quantity.

Given that a power uprate at Waterford 3 will require additional operation of the liquid waste management system to support the increased generation of electricity, the permittees request to remove the daily average flow limit of 0.0288 MGD is granted. Discharge flow is totalized when the discharge occurs.

Total Suspended Solids The current NPDES permit established a daily average discharge limit of 30 mg/l and a daily maximum discharge limit of 100 mg/l for total suspended solids at Internal Outfall 101 (former 01A). Since the flow to this outfall is intermittent only the daily maximum limitation is continued from the current permit. This limit is based on 40 CFR 423.12(b)(3)(BPT).

Oil and Grease The current NPDES permit established a daily average discharge limit of 15 mg/l and a daily maximum discharge limit of 20 mg/l for oil and grease at Internal Outfall 101 (former 01A). Since the flow to this outfall is intermittent only the daily maximum limitation is continued from the current permit. This limit is based on 40 CFR 423.12(b)(3)(BPT).

Boron The current NPDES permit established Report for both the daily average discharge limit and daily maximum discharge limit for boron at Internal Outfall 101 (former 01A). Since the flow to this outfall is intermittent only the daily maximum reporting requirement is continued from the current permit.

This requirement is based on the current permit.

pH The current NPDES permit established a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Outfall 101 (former 01A). These limits are based on 40 CFR 423.12(b)(1)(BPT) and are retained from the current permit.

Internal Outfall 201 (Former 01B) - Boron Management System This outfall is the intermittent internal discharge from the boron management system to Final Outfall 001 via the turbine condenser cooling system. The boron management system concentrates and recovers boron from low volume wastewaters for reuse within the plant. The boron management system receives low volume wastewater from the following sources, including but not limited to: the turbine and reactor building equipment and floor drains, primary plant water makeup, laboratory drains, and other low volume wastewater sources

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 76 as defined in 40 CFR 423. The effluent limitations proposed for Internal Outfall 201 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L Flow, MGD N/A Report Total Suspended Solids N/A 100 Oil and Grease N/A 20 Boron N/A Report pH, standard units 6.0 (min) 9.0 (max)

Flow The permittee has requested to change the daily average flow limitation from 0.0288 MGD to Report. The daily average flow limitation of 0.0288 MGD at Internal Outfall 201 (former 01B) is included in the current NPDES permit.

This average daily flow limit was requested by LP&L in a letter to EPA Region 6 dated March 1, 1985. This letter requested an increase in the daily average flow of the boron management system from the limit of 0.0144 MGD then in effect to 0.0288 MGD which LP&L described as necessary "to accommodate efficient operation of the plant". This request was granted in a letter from EPA Region 6 to LP&L dated May 30, 1985.

The permittee contends that this flow limit at Internal Outfall 201 unnecessarily restricts plant operations without adding to the quality of the discharges from the facility. Because discharges from the boron management system occur in batches and each batch requires monitoring prior to discharge, all the effluent conveyed past Internal Outfall 201 meets the discharge criteria specified in the permit, regardless of flow quantity.

Given that a power uprate at Waterford 3 will require additional operation of the boron management system to support the increased generation of electricity, the permitees request to remove the daily average flow limit of 0.0288 MGD is granted. Discharge flow is totalized when the discharge occurs.

Total Suspended Solids The current NPDES permit established a daily average discharge limit of 30 mg/l and a daily maximum discharge limit of 100 mg/l for total suspended solids at Internal Outfall 201 (former 01B). Since the flow to this outfall is intermittent only the daily maximum limitation is continued from the current permit. This limit is based on 40 CFR 423.12(b)(3)(BPT).

Oil and Grease The current NPDES permit established a daily average discharge limit of 15 mg/l and a daily maximum discharge limit of 20 mg/l for oil and grease at Internal Outfall 201 (former 01B). Since the flow to this outfall is

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 77 intermittent only the daily maximum limitation is continued from the current permit. This limit is based on 40 CFR 423.12(b)(3)(BPT).

Boron The current NPDES permit established Report for both the daily average discharge limit and daily maximum discharge limit for boron at Internal Outfall 201 (former 01B). Since the flow to this outfall is intermittent only the daily maximum reporting requirement is continued from the current permit.

This requirement is based on the current permit.

pH The current NPDES permit established a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Internal Outfall 201 (former 01B). These limits are based on 40 CFR 423.12(b)(1)(BPT) and are retained from the current permit.

Internal Outfall 301 (Former 01C) - Filter Flush System This outfall is the intermittent internal discharge of filter flush water from the primary water treatment system to Final Outfall 001 via the turbine condenser cooling system. The primary water treatment system filters river water for various plant uses. The filters of this system are flushed periodically with untreated river water to remove solids trapped in the filter beds. The effluent limitations proposed for Internal Outfall 301 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum Flow, MGD N/A Report Clarifying Agents Used Flow The current NPDES permit required the daily average flow and daily maximum flow to be reported at Internal Outfall 301 (former 01C). Since the flow to this outfall is intermittent, the daily maximum flow is to be reported.

Discharge flow is totalized when the discharge occurs.

Clarifying Agents Used The current NPDES permit specified the recording of the monthly amount of clarifying agents used at Internal Outfall 301 (former 01C). This requirement is continued from the current permit. However, no reporting on Discharge Monitoring Reports (DMRs) will be required. The permittee is required to keep these monthly records onsite, available to DEQ or EPA anytime or upon request.

The draft permit establishes a permit requirement for the onsite maintenance of this information in Part I.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 78 Internal Outfall 401 (Former 01D) - Low Volume Wastewaters This outfall is the intermittent internal discharge of steam generator blowdown and other low volume wastewaters to Final Outfall 001 via the turbine condenser cooling system. In addition to steam generator blowdown, low volume wastewater from other sources as defined in 40 CFR 423 are discharged from this outfall. The effluent limitations proposed for Internal Outfall 401 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L Flow, MGD N/A Report Total Suspended Solids N/A 100 Oil and Grease N/A 20 pH, standard units 6.0 (min) 9.0 (max)

Flow The current NPDES permit requires the daily average flow and daily maximum flow to be reported at Internal Outfall 401 (former 01D). Since the flow to this outfall is intermittent, only the daily maximum flow is to be reported.

Discharge flow is totalized when the discharge occurs during periods of blowdown. When low volume wastewaters are discharged, the flow must be estimated.

Total Suspended Solids The current NPDES permit established a daily average discharge limit of 30 mg/l and a daily maximum discharge limit of 100 mg/l for total suspended solids at Internal Outfall 401 (former 01D). Since the flow to this outfall is intermittent the daily maximum limitation is continued from the current permit. This limit are based on 40 CFR 423.12(b)(3)(BPT).

Oil and Grease This draft permit establishes a daily maximum discharge limit of 20 mg/l for oil and grease at Internal Outfall 401. This limit is based on 40 CFR 423.12(b)(3)(BPT).

pH The current NPDES permit established a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Internal Outfall 401 (former 01D). These limits are based on 40 CFR 423.12(b)(1)(BPT) and are retained from the current permit.

Internal Outfall 501 - Auxiliary Component Cooling Water Basin A

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 79 Plant systems have been modified to allow effluent from the auxiliary component cooling water basins to be directly discharged via the turbine condenser cooling system, leaving the facility through Final Outfall 001.

This new outfall monitors the intermittent internal discharge from Auxiliary Component Cooling Water Basin A to Final Outfall 001 via the turbine condenser cooling system. Low volume wastewater sources contributing to the flow monitored at this outfall include, but are not limited to, auxiliary component cooling water, component cooling water, Mississippi River water, and stormwater. The effluent limitations proposed for Internal Outfall 501 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L Flow, MGD N/A Report Total Organic Carbon N/A 50 Total Suspended Solids N/A 100 Oil and Grease N/A 20 pH, standard units 6.0 (min) 9.0 (max)

Flow This draft permit requires the daily maximum flow to be reported at Internal Outfall 501 by estimating using best engineering judgement. This requirement is based on 40 CFR 122.44(i)(1)(iii).

Total Organic Carbon This draft permit establishes a daily maximum discharge limit of 50 mg/l for total organic carbon at Internal Outfall 501. Total Organic Carbon is established because stormwater could be discharged via this outfall. The limitation is based on BPJ in accordance with this Office's guidance on stormwater, letter dated 6/17/87, from J. Dale Givens (LDEQ) to Myron Knudson (EPA Region 6).

Total Suspended Solids This draft permit establishes a daily maximum discharge limit of 100 mg/l for total suspended solids at Internal Outfall 501. This limit is based on 40 CFR 423.12(b)(3)(BPT). When the circulating water flow test is performed, TSS is not limited due to Mississippi River water being used for this test. This test is infrequently done, historically only during times of refueling outages.

Oil and Grease

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 80 This draft permit establishes a daily maximum discharge limit of 20 mg/l for oil and grease at Internal Outfall 501. This limit is based on 40 CFR 423.12(b)(3)(BPT).

pH This draft permit establishes a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Internal Outfall 501. These limits are based on 40 CFR 423.12(b)(1)(BPT).

Internal Outfall 601 - Auxiliary Component Cooling Water Basin B Plant systems have been modified to allow effluent from the auxiliary component cooling water basins to be directly discharged via the turbine condenser cooling system, leaving the facility through Final Outfall 001.

This new outfall monitors the intermittent internal discharge from Auxiliary Component Cooling Water Basin B to Final Outfall 001 via the turbine condenser cooling system. Low volume wastewater sources contributing to the flow monitored at this outfall include, but are not limited to, auxiliary component cooling water, component cooling water, Mississippi River water, and stormwater. The effluent limitations proposed for Internal Outfall 601 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L Flow, MGD N/A Report Total Organic Carbon N/A 50 Total Suspended Solids N/A 100 Oil and Grease N/A 20 pH, standard units 6.0 (min) 9.0 (max)

Flow This draft permit requires the daily maximum flow to be reported at Internal Outfall 601 by estimating using best engineering judgement. This requirement is based on 40 CFR 122.44(i)(1)(iii).

Total Organic Carbon This draft permit establishes a daily maximum discharge limit of 50 mg/l for total organic carbon at Internal Outfall 501. Total Organic Carbon is established because stormwater could be discharged via this outfall. The limitation is based on BPJ in accordance with this Office's guidance on stormwater, letter dated 6/17/87, from J. Dale Givens (LDEQ) to Myron Knudson (EPA Region 6).

Total Suspended Solids

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 81 This draft permit establishes a daily maximum discharge limit of 100 mg/l for total suspended solids at Internal Outfall 601. This limit is based on 40 CFR 423.12(b)(3)(BPT). When the circulating water flow test is performed, TSS is not limited due to Mississippi River water being used for this test. This test is infrequently done, historically only during times of refueling outages.

Oil and Grease This draft permit establishes a daily maximum discharge limit of 20 mg/l for oil and grease at Internal Outfall 601. This limit is based on 40 CFR 423.12(b)(3)(BPT).

pH This draft permit establishes a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Internal Outfall 601. These limits are based on 40 CFR 423.12(b)(1)(BPT).

Internal Outfall 701 - Dry Cooling Tower Sump #1 Plant systems have been modified to allow effluent from the dry cooling tower sumps to be directly discharged via the turbine condenser cooling system, leaving the facility through Final Outfall 001.

This outfall monitors the intermittent internal discharge which is comprised of greater than 85% stormwater, in addition to cooling tower blowdown and low volume wastewaters from Dry Cooling Tower Sump #1 to Final Outfall 001 via the turbine condenser cooling system or to Final Outfall 004 via the plant drainage ditches. In addition to the wet cooling tower blowdown, low volume wastewater from various sources as defined in 40 CFR 423 are discharged from this outfall. Low volume wastewater sources contributing to this monitored flow include, but are not limited to, wet cooling tower leakage, auxiliary component cooling water, component cooling water, and stormwater. Previously monitored effluent from the Yard Oil Separator System (Internal Outfall 104) is infrequently discharged through this outfall as a result of maintenance activities. The effluent limitations proposed for Internal Outfall 701 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L Flow, MGD N/A Report Total Organic Carbon N/A 50 Total Suspended Solids N/A 100 Oil and Grease N/A 20 Free Available Chlorine N/A 0.5 Chromium, Total N/A 0.2 Zinc, Total N/A 1.0

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 82 pH, standard units 6.0 (min) 9.0 (max)

Flow This draft permit requires the daily maximum flow to be reported at Internal Outfall 701 by estimating using best engineering judgement. This requirement is based on 40 CFR 122.44(i)(1)(iii).

Total Organic Carbon This draft permit establishes a daily maximum discharge limit of 50 mg/l for total organic carbon at Internal Outfall 501. Total Organic Carbon is established because stormwater is discharged via this outfall. The limitation is based on BPJ in accordance with this Office's guidance on stormwater, letter dated 6/17/87, from J. Dale Givens (LDEQ) to Myron Knudson (EPA Region 6).

Total Suspended Solids This draft permit establishes a daily maximum discharge limit of 100 mg/l for total suspended solids at Internal Outfall 701. This limit is based on 40 CFR 423.12(b)(3)(BPT).

Oil and Grease This draft permit establishes a daily maximum discharge limit of 20 mg/l for oil and grease at Internal Outfall 701. This limit is based on 40 CFR 423.12(b)(3)(BPT).

Free Available Chlorine This draft permit establishes a daily maximum discharge limit of 0.5 mg/l for free available chlorine at Internal Outfall 701, when the discharge includes cooling tower blowdown. This limit is based on 40 CFR 423.13(d)(1)(BAT).

Total Chromium This draft permit establishes a daily maximum discharge limit of 0.2 mg/l for total chromium at Internal Outfall 701, when the discharge includes cooling tower blowdown. This limit is based on 40 CFR 423.13(d)(1)(BAT).

Total Zinc This draft permit establishes a daily maximum discharge limit of 1.0 mg/l for total zinc at Internal Outfall 701, when the discharge includes cooling tower blowdown. This limit is based on 40 CFR 423.13(d)(1)(BAT).

pH

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 83 This draft permit establishes a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Internal Outfall 701. These limits are based on 40 CFR 423.12(b)(1)(BPT).

Internal Outfall 801 - Dry Cooling Tower Sump #2 Plant systems have been modified to allow effluent from the dry cooling tower sumps to be directly discharged via the turbine condenser cooling system, leaving the facility through Final Outfall 001.

This outfall monitors the intermittent internal discharge which is comprised of greater than 85% stormwater, in addition to cooling tower blowdown and low volume wastewaters from Dry Cooling Tower Sump #2 to Final Outfall 001 via the turbine condenser cooling system or to Final Outfall 004 via the plant drainage ditches. In addition to the wet cooling tower blowdown, low volume wastewater from various sources as defined in 40 CFR 423 are discharged from this outfall. Low volume wastewater sources contributing to this monitored flow include, but are not limited to, wet cooling tower leakage, auxiliary component cooling water, component cooling water, and stormwater. Previously monitored effluent from the Yard Oil Separator System (Internal Outfall 104) is infrequently discharged through this outfall as a result of maintenance activities. The effluent limitations proposed for Internal Outfall 801 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L Flow, MGD N/A Report Total Organic Carbon N/A 50 Total Suspended Solids N/A 100 Oil and Grease N/A 20 Free Available Chlorine N/A 0.5 Chromium, Total N/A 0.2 Zinc, Total N/A 1.0 pH, standard units 6.0 (min) 9.0 (max)

Flow This draft permit requires the daily maximum flow to be reported at Internal Outfall 801 by estimating using best engineering judgement. This requirement is based on 40 CFR 122.44(i)(1)(iii).

Total Organic Carbon This draft permit establishes a daily maximum discharge limit of 50 mg/l for total organic carbon at Internal Outfall 501. Total Organic Carbon is established because stormwater is discharged via this outfall. The limitation is based on BPJ in accordance with this Office's guidance on stormwater, letter dated 6/17/87, from J. Dale Givens (LDEQ) to Myron Knudson (EPA Region 6).

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 84 Total Suspended Solids This draft permit establishes a daily maximum discharge limit of 100 mg/l for total suspended solids at Internal Outfall 801. This limit is based on 40 CFR 423.12(b)(3)(BPT).

Oil and Grease This draft permit establishes a daily maximum discharge limit of 20 mg/l for oil and grease at Internal Outfall 801. This limit is based on 40 CFR 423.12(b)(3)(BPT).

Free Available Chlorine This draft permit establishes a daily maximum discharge limit of 0.5 mg/l for free available chlorine at Internal Outfall 801, when the discharge includes cooling tower blowdown. This limit is based on 40 CFR 423.13(d)(1)(BAT).

Total Chromium This draft permit establishes a daily maximum discharge limit of 0.2 mg/l for total chromium at Internal Outfall 801, when the discharge includes cooling tower blowdown. These limits are based on 40 CFR 423.13(d)(1)(BAT).

Total Zinc This draft permit establishes a daily maximum discharge limit of 1.0 mg/l for total zinc at Internal Outfall 801, when the discharge includes cooling tower blowdown. These limits are based on 40 CFR 423.13(d)(1)(BAT).

pH This draft permit establishes a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Internal Outfall 801. These limits are based on 40 CFR 423.12(b)(1)(BPT).

Internal Outfall 901 - Metal Cleaning Wastewater This new mobile outfall monitors the intermittent internal discharge of metal cleaning wastewaters from internal components of plant equipment to Final Outfall 001 via the turbine condenser cooling system. Metal cleaning wastewaters (both chemical and non-chemical) result from the cleaning washes/rinses of various plant equipment components including, but not limited to, the steam generator and the cooling water heat exchangers and piping. The effluent limitations proposed for Internal Outfall 901 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 85 Flow, MGD N/A Report Total Suspended Solids N/A 100 Oil and Grease N/A 20 Copper, Total N/A 1.0 Iron, Total N/A 1.0 pH, standard units 6.0 (min) 9.0 (max)

Flow This draft permit requires the daily maximum flow to be reported at Internal Outfall 901 by estimating using best engineering judgement. This requirement is based on 40 CFR 122.44(i)(1)(iii).

Total Suspended Solids This draft permit establishes a daily maximum discharge limit of 100 mg/l for total suspended solids at Internal Outfall 901. These limits are based on 40 CFR 423.12(b)(5)(BPT).

Oil and Grease This draft permit establishes a daily maximum discharge limit of 20 mg/l for oil and grease at Internal Outfall 901. These limits are based on 40 CFR 423.12(b)(5)(BPT).

Total Copper This draft permit establishes a daily maximum discharge limit of 1.0 mg/l for total copper at Internal Outfall 901. These limits are based on 40 CFR 423.12(b)(5)(BPT).

Total Iron This draft permit establishes a daily maximum discharge limit of 1.0 mg/l for total iron at Internal Outfall 901. These limits are based on 40 CFR 423.12(b)(5)(BPT).

pH This draft permit establishes a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Internal Outfall 901. These limits are based on 40 CFR 423.12(b)(1)(BPT).

Outfall 004 - Stormwater Outfall 004 is a new outfall that consolidates Outfalls 04A and 04B from the current NPDES Permit LA0007374. Most of the effluent monitored at this outfall is 85% stormwater runoff. Besides stormwater, potable water from the fire water system, maintenance wastewaters including, but not limited to:

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 86 hydrostatic test water, air conditioning condensate, low volume wastewaters from various sources as defined in 40 CFR 423, and previously monitored effluents exit the facility via Outfall 004. Low volume sources contributing wastewater to this outfall include, but are not limited to, reverse osmosis reject water and demineralized water. The plant drainage ditch system receives treated discharge from the yard oil separator system (Internal Outfall 104), untreated vehicle wash wastewater (Internal Outfall 204) and during maintenance activities discharges from Dry Cooling Tower Sump #1 (Internal Outfall 701) and Dry Cooling Tower Sump #2 (Internal Outfall 801).

The effluent limitations proposed for Outfall 004 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L Flow, MGD N/A Report Total Organic Carbon N/A 50 Total Suspended Solids N/A 100 Oil and Grease N/A 15 pH, standard units 6.0 (min) 9.0 (max)

Flow This draft permit requires the daily maximum flow to be reported at Outfall 004 by estimating using best engineering judgement. This requirement is based on 40 CFR 122.44(i)(1)(iii) and the current permit.

Total Organic Carbon This draft permit establishes a daily maximum discharge limit of 50 mg/l for total organic carbon at Outfall 004. Total Organic Carbon is established because stormwater is discharged via this outfall. The limitation is based on BPJ in accordance with this Office's guidance on stormwater, letter dated 6/17/87, from J. Dale Givens (LDEQ) to Myron Knudson (EPA Region 6).

Total Suspended Solids This draft permit establishes a daily maximum discharge limit of 100 mg/l for total suspended solids at Outfall 004, when the discharge includes low volume wastewaters as defined by 40 CFR 423 (excludes Mississippi River water that accumulates in the condenser water boxes). This limit is based on 40 CFR 423.12(b)(3)(BPT) and the current permit.

Oil and Grease This draft permit establishes a daily maximum discharge limit of 15 mg/l for oil and grease at Outfall 004. The limitation is based on BPJ in accordance with this Office's guidance on stormwater, letter dated 6/17/87, from J. Dale Givens (LDEQ) to Myron Knudson (EPA Region 6).

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 87 pH This draft permit establishes a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Outfall 004.

These limits are based on 40 CFR 423.12(b)(1)(BPT) and the current permit.

Internal Outfall 104 (Formerly 002) - Yard Oil Separator This outfall is currently Outfall 002. It is being redesignated Internal Outfall 104 because it exits the facility through Final Outfall 004 via a plant drainage ditch. It is the intermittent internal discharge from the yard oil separator system. Occasionally monitored effluent from the yard oil separator system is discharged to Dry Cooling Tower Sump #1 (Internal Outfall 701) or Dry Cooling Tower Sump #2 (Internal Outfall 801) as a result of maintenance activities. Wastewater sources contributing to the flow monitored at Outfall 104 include auxiliary boiler blowdown, stormwater, and low volume wastewaters from various sources as defined by 40 CFR 423. Low volume sources contributing wastewater to this outfall include, but are not limited to, secondary water system drains, system leakage, auxiliary boiler sumps, turbine building equipment and floor drains, turbine building floor wash downs, and laboratory drains. The effluent limitations proposed for Internal Outfall 104 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L Flow, MGD N/A Report Total Suspended Solids N/A 100 Oil and Grease N/A 20 pH 6.0 (min) 9.0 (max)

Flow This draft permit requires the daily maximum flow to be reported at Internal Outfall 104 by estimating using best engineering judgement. This requirement is based on 40 CFR 122.44(i)(1)(iii) and the current permit.

Total Suspended Solids This draft permit establishes a daily maximum discharge limit of 100 mg/l for total suspended solids at Internal Outfall 104. This limit is based on 40 CFR 423.12(b)(3)(BPT) and the current permit.

Oil and Grease This draft permit establishes a daily maximum discharge limit of 20 mg/l for oil and grease at Internal Outfall 104. This limit is based on 40 CFR 423.12(b)(3)(BPT) and the current permit.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 88 pH This draft permit establishes a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Outfall 004.

These limits are based on 40 CFR 423.12(b)(1)(BPT) and the current permit.

Internal Outfall 204 (New Outfall) - Vehicle Wash Wastewater This outfall is the intermittent internal discharge from the area where vehicles will be externally washed. The effluent limitations proposed for Internal Outfall 204 in the draft LPDES permit are as follows:

Parameter Monthly Daily Average Maximum mg/L mg/L Flow, MGD Report Report Chemical Oxygen Demand 200 300 Total Suspended Solids N/A 45 Oil and Grease N/A 15 pH 6.0 (min) 9.0 (max)

Flow This draft permit requires the daily maximum flow to be reported at Internal Outfall 204 by estimating using best engineering judgement. This requirement is based on 40 CFR 122.44(i)(1)(iii).

Chemical Oxygen Demand This draft permit establishes a monthly average discharge limit of 200 mg/l and a daily maximum discharge limit of 300 mg/l for chemical oxygen demand at Internal Outfall 204. This limit is based on LAG750000, the general permit for exterior vehicle wash wastewater, effective on July 1, 1998.

Total Suspended Solids This draft permit establishes a daily maximum discharge limit of 45 mg/l for total suspended solids at Internal Outfall 204. This limit is based on LAG75000, the general permit for exterior vehicle wash wastewater, effective on July 1, 1998.

Oil and Grease This draft permit establishes a daily maximum discharge limit of 15 mg/l for oil and grease at Internal Outfall 204. This limit is based on LAG750000, the general permit for exterior vehicle wash wastewater, effective on July 1, 1998.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 89 pH This draft permit establishes a minimum discharge limit of 6.0 standard units and a maximum discharge limit of 9.0 standard units for pH at Internal Outfall 204. This limit is based on LAG75000, the general permit for exterior vehicle wash wastewater, effective on July 1, 1998.

Soaps and/or Detergents This draft permit specifies an inventory record of soaps and/or detergents following the provision in Part III.C.3. The quantity and types of all soaps and/or detergents used during the sampling month shall be recorded. Records of the quantity and types of soaps and/or detergents used shall be retained for three (3) years. Additionally, a Material Safety Data Sheet for each material used shall be retained. No DMR reporting shall be required.

Outfall 005 - Energy Education Center Sewage Treatment Plant This outfall is currently permitted by LAG530192 It is the intermittent discharge from the Entergy Energy Education Center sewage treatment plant to 40 Arpent Canal. In addition to the sanitary wastewater, a de minimis discharge from the HVAC unit enters the sewage treatment plant. The effluent limitations proposed for Outfall 005 are transferred from the general permit to this draft LPDES permit. The limitations are as follows:

Parameter Monthly Weekly Average Average mg/L mg/L Flow, MGD N/A Report BOD5 N/A 45 TSS N/A 45 Fecal Coliform colonies/100 ml N/A 400 pH, Std. Units 6.0 (min) 9.0 (max)

C. WATER QUALITY-BASED EFFLUENT LIMITATIONS Technology-based effluent limitations were screened against state water quality numerical standard based limits by following guidance procedures established in the Permitting Guidance Document for Implementing Louisiana Surface Water Quality Standards, LDEQ, October 30, 1995. Calculations, results, and documentation are given in Appendix B.

The following pollutants received water quality based effluent limits:

None Minimum quantification levels (MQL's) for state water quality numerical standards-based effluent limitations are set at the values listed in the

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 90 Permitting Guidance Document for Implementing Louisiana Surface Water Quality Standards, LDEQ, October 30, 1995. They are also listed in Part II of the permit.

The nearest drinking water intake, St. Charles Parish Number 2, is located on the east bank at 125.1 M.A.H.P., 4.4 miles downstream from the discharge point. According to a fax received on 9/26/96 from Leslie Lemon of the Department of Health and Hospitals, Office of Public Health, there have been no toxic exceedences of drinking water Maximum Contaminant Levels at this drinking water intake. Nearby potable water industrial intakes include Union Carbide Corporation.

D. Biomonitoring Requirements It has been determined that there may be pollutants present in the effluent which may have the potential to cause toxic conditions in the receiving stream. The State of Louisiana has established a narrative criteria which states, "toxic substances shall not be present in quantities that alone or in combination will be toxic to plant or animal life." The Office of Water Resources requires the use of the most recent EPA biomonitoring protocols.

Whole effluent biomonitoring is the most direct measure of potential toxicity which incorporates both the effects of synergism of effluent components and receiving stream water quality characteristics. Biomonitoring of the effluent is, therefore, required as a condition of this permit to assess potential toxicity. See Appendix C for the permittee's biomonitoring history and biomonitoring frequency recommendation. The biomonitoring procedures stipulated as a condition of this permit for Outfall 001 are as follows:

TOXICITY TESTS FREQUENCY Acute static renewal 48-hour once per year definitive toxicity test using Daphnia pulex Acute static renewal 48-hour once per year definitive toxicity test using fathead minnow (Pimephales promelas)

Toxicity tests shall be performed in accordance with protocols described in the latest revision of the "Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms." The stipulated test species are appropriate to measure the toxicity of the effluent consistent with the requirements of the State water quality standards. The biomonitoring frequency has been established to reflect the likelihood of ambient toxicity and to provide data representative of the toxic potential of the facility's discharge in accordance with regulations promulgated at LAC 33:IX.2369/40 CFR Part 122.48.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 91 Results of all dilutions as well as the associated chemical monitoring of pH, temperature, hardness, dissolved oxygen, conductivity, and alkalinity shall be documented in a full report according to the test method publication mentioned in the previous paragraph. The permittee shall submit a copy of the first full report to this Office. The full report and subsequent reports are to be retained for three (3) years following the provisions of Part III.C.3 of this permit. The permit requires the submission of certain toxicity testing information as an attachment to the Discharge Monitoring Report.

This permit may be reopened to require effluent limits, additional testing, and/or other appropriate actions to address toxicity if biomonitoring data show actual or potential ambient toxicity to be the result of the permittee's discharge to the receiving stream or water body. Modification or revocation of the permit is subject to the provisions of LAC 33:IX.2407/40 CFR 124.5.

Accelerated or intensified toxicity testing may be required in accordance with Section 308 of the Clean Water Act.

Dilution Series The permit requires five (5) dilutions in addition to the control (0%

effluent) to be used in the toxicity tests. These additional effluent concentrations shall be 56%, 42%, 32%, 24%, and 18%. The low-flow effluent concentration (critical dilution) is defined as 42% effluent.

E. MONITORING FREQUENCIES Regulations require permits to establish monitoring requirements to yield data representative of the monitored activity [LAC 33:IX.2369/40 CFR 122.48(b)] and to assure compliance with permit limitations [LAC 33:IX.2361.I./40 CFR 122.44(I)]. The following section(s) explain the rationale for the monitoring frequencies stated in the draft permit. See outfall information for associated outfalls concerning the type of wastewaters in Section VII.

Outfall 001 Monitoring frequencies for all effluent characteristics, except the biomonitoring which was discussed above in Section IX.D, are retained from the current permit. Flow, Temperature (F), and Heat (BTU/hour) are continuous with a sample type of record. Boron is calculated daily. Total Residual Chlorine is measured once per week by grab sample, during periods of chlorination.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 92 Internal Outfall 101 (Former 01A) - Liquid Waste Management System Monitoring frequencies for all effluent characteristics are retained from the current permit. Flow, TSS, Oil and Grease, Boron, and pH are once per batch.

Flow is totalized by a flow meter not estimated as the current permit states.

Therefore this permit proposes to change the sample type for flow to totalized. Sampling for TSS, Oil and Grease, Boron, and pH are by grab sampling.

Internal Outfall 201 (Former 01B) - Boron Management System Monitoring frequencies for all effluent characteristics are retained from the current permit. Flow, TSS, Oil and Grease, Boron, and pH are once per batch.

Flow is totalized by a flow meter not estimated as the current permit states.

Therefore this permit proposes to change the sample type for flow to totalized. Sampling for TSS, Oil and Grease, Boron, and pH are by grab sampling.

Internal Outfall 301 (Former 01C) - Filter Flush System Flow is totalized weekly by a flow meter not estimated as the current permit states. Therefore this permit proposes to change the sample type for flow to totalized. The monthly recording based on an inventory calculation of the clarifying agents used is retained from the current permit. However, no DMR reporting is required. This permit proposes a requirement for the permittee to maintain these records onsite.

Internal Outfall 401 (Former 01D) - Low Volume Wastewaters The measurement frequency and sample type for flow, TSS, Oil and Grease, and pH are retained from the current permit. Flow is daily by a totalized sample type. TSS, Oil and Grease, and pH are by a grab sample.

Internal Outfall 501 - Auxiliary Component Cooling Water Basin A This permit proposes a monitoring frequency of once per week for all parameters, when discharging. The sample type for flow is estimate and the sample type for TOC, TSS, Oil and Grease, and pH are by a grab sample.

During circulating water flow testing, sampling for TSS is not required (when Mississippi River water is used for the flow test).

Internal Outfall 601 - Auxiliary Component Cooling Water Basin B This permit proposes a monitoring frequency of once per week for all parameters, when discharging. The sample type for flow is estimate and the sample type for TOC, TSS, Oil and Grease, and pH are by a grab sample.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 93 During circulating water flow testing, sampling for TSS is not required (when Mississippi River water is used for the flow test).

Internal Outfall 701 - Dry Cooling Tower Sump #1 This outfall is comprised of greater than 85% stormwater, therefore this permit proposes a monitoring frequency of once per month for all parameters, when discharging. The sample type for flow is estimate and the sample type for TOC, TSS, Oil and Grease, Free Available Chlorine, Total Chromium, Total Zinc, and pH are by a grab sample. Free Available Chlorine, Total Chromium, and Total Zinc are analyzed when the discharge includes cooling tower blowdown.

Internal Outfall 801 - Dry Cooling Tower Sump #2 This outfall is comprised of greater than 85% stormwater, therefore this permit proposes a monitoring frequency of once per month for all parameters, when discharging. The sample type for flow is estimate and the sample type for TOC, TSS, Oil and Grease, Free Available Chlorine, Total Chromium, Total Zinc, and pH are by a grab sample. Free Available Chlorine, Total Chromium, and Total Zinc are analyzed when the discharge includes cooling tower blowdown.

Internal Outfall 901 - Metal Cleaning Wastewater This permit proposes a monitoring frequency of once per week for all parameters, when discharging. The sample type for flow is estimate and the sample type for TSS, Oil and Grease, Total Copper, Total Iron, and pH are by a grab sample.

Outfall 004 - Stormwater This permit proposes a monitoring frequency for all parameters of once per quarter, when discharging. The sample type for flow is estimate and the sample type for TOC, Oil and Grease, TSS, and pH are by a grab sample.

Internal Outfall 104 - Yard Oil Separator This permit proposes a monitoring frequency of once per month for all parameters, when discharging. The sample type for flow is estimate and the sample type for TSS, Oil and Grease, and pH is by a grab sample.

Internal Outfall 204 - Vehicle Wash Wastewater The monitoring frequency of vehicle wash wastewater follows LDEQ's vehicle wash wastewater general permit. The monitoring frequency is once per quarter for all parameters, when discharging. The sample type for flow is estimate and the sample type for COD, TSS, Oil and Grease, pH, and soaps and/or detergents is by grab sample.

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 94 Outfall 005 - Energy Education Center Sewage Treatment Plant All parameters will be monitored once per six months based on monitoring frequencies established for similar discharges. The sample type for flow is estimate and the sample type for BOD5, TSS, Fecal Coliform, and pH is by a grab sample.

X. Endangered Species:

The receiving waterbody, Subsegment 070301 of the Mississippi River Basin is not listed in Section II.2 of the Implementation Strategy as requiring consultation with the U.S. Fish and Wildlife Service (FWS). This strategy was submitted with a letter dated September 26, 1997 from Fruge (FWS) to Aydell (LDEQ). Therefore, in accordance with the Memorandum of Understanding between the LDEQ and the FWS, no further informal (Section 7, Endangered Species Act) consultation is required. It was determined that the issuance of the LPDES permit is not likely to have an adverse effect on any endangered or candidate species or the critical habitat. The effluent limitations established in the permit ensure protection of aquatic life and maintenance of the receiving water as aquatic habitat.

XI. Historic Sites:

The discharge is from an existing facility location, which does not include an expansion on undisturbed soils. Therefore, there should be no potential effect to sites or properties on or eligible for listing on the National Register of Historic Places, and in accordance with the "Memorandum of Understanding for the Protection of Historic Properties in Louisiana Regarding LPDES Permits" no consultation with the Louisiana State Historic Preservation Officer is required.

XII. Tentative Determination:

On the basis of preliminary staff review, the Department of Environmental Quality has made a tentative determination to reissue a permit for the discharge described in the application.

XIII. Variances:

No requests for variances have been received by this Office.

XIV. Public Notices:

Upon publication of the public notice, a public comment period shall begin on the date of publication and last for at least 30 days thereafter. During this period, any interested persons may submit written comments on the draft permit and may request a public hearing to clarify issues involved in the permit decision at this Office's address on the first page of the fact sheet. A

Fact Sheet and Rationale for Entergy, Waterford 3 Steam Electric Station LA0007374 Page 95 request for a public hearing shall be in writing and shall state the nature of the issues proposed to be raised in the hearing.

Public notice published in:

ST. CHARLES HERALD-GUIDE of Boutte Office of Water Resources Public Notice Mailing List

Appendix A Appendix B Appendix C

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