Text

Louisiana Pollutant Discharge Elimination System Permit Renewal
	ML24106A200
Person / Time
Site:	River Bend
Issue date:	04/15/2024
From:	Crawford R; Entergy Operations
To:	; Office of Nuclear Reactor Regulation, Document Control Desk
References
	RBG-48288
	Download: ML24106A200 (1)
	v • d • e

) entergy Randy Crawford Manager Regulatory Assurance 225-381-4177

RBG-48288

April 15, 2024

A TIN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Louisiana Pollutant Discharge Elimination System Permit Renewal

River Bend Station - Unit 1 NRC Docket Nos. 50-458 Renewed Facility Operating License No. NPF-47

Enclosed is a copy of the renewed Louisiana Pollutant Discharge Elimination System (LPDES) permit effective May 1, 2024. This LPDES renewal is provided as required by section 3.2 of Appendix B, Environmental Protection Plan, to Renewed Facility Operating License No. NPF-47.

This document contains no commitments.

Should you have any questions, please contact Mr. Randy Crawford, Regulatory Assurance Manager, at 225-381-4177.

Respectfully,

Randy Crawford

RC/tf

Enclosure:

Louisiana Pollutant Discharge Elimination System Permit

cc: NRC Region IV Regional Administrator - Region IV NRC Senior Resident Inspector - River Bend Station

Entergy Operations, Inc., 5485 U.S. Highway 61 N. St. Francisville, LA 70775 Enclosure

RBG-48288

Louisiana Pollutant Discharge Elimination System Permit JEFF LANDRY AURELIA s. G1ACOMETTO GOVERNOR SECRETARY ST A TE OF LOUISIANA DEPARTMENT OF ENVIRONMENTAL QUALITY OFFICE OF ENVIRONMENTAL SERVICES APR O l 2024

CERTIFIED MAIL-7022 2410 0002 3553 5818-RETURN RECEIPT REQUEST

File No.: LA004273 l Agency Interest (Al) No.: 2889 Activity No.: PER20220001

Mr. Philip Hansett Entergy Operations Inc.

River Bend Station 5485 US Highway 61 St. Francisville, LA 70775

RE: Louisiana Pollutant Discharge Elimination System (LPDES) permit to discharge cooling tower blowdown, low volume wastewaters, maintenance wastewaters, treated sanitary wastewater, metal cleaning wastewater, clarifier underflow, and hydrostatic test wastewater to the Mississippi River (via Outfalls 001 and 006) and stormwater runoff, low volume wastewaters, potable water, clarified river water, well water, air conditioning condensate, maintenance wastewaters, cooling tower drift/mist, vehicle washwater, and hydrostatic test wastewater to Grant's Bayou, thence to Alligator Bayou, thence to Thompson Creek (via Outfalls 002, 003, 004, and 005) from an existing steam electric generating facility located at 5485 U.S. Highway 61 in St. Francisville, West Feliciana Parish

Dear Mr. Hansett:

This Office has received comments from the general public in response to the public notice published in the Office of Environmental Services Public Notice Mailing List on December 14, 2023, and on the LDEQ website on December 15, 2023. There were no comments from Entergy Operations Inc. as a result of the public notice. The comments from the general public were reviewed and summarized in the attached Public Comment Response Summary.

Pursuant to the Clean Water Act (33 U.S.C. 1251 et seq.), and the Louisiana Environmental Quality Act (La.

R.S. 30:2001, et seq.), the attached LPDES permit has been issued. Provisions of this permit may be appealed in writing pursuant to La. R.S. 30:2024 (A) within 30 days of receipt of this permit. A request for a hearing must be sent to the following:

Louisiana Department of Environmental Quality Office of the Secretary Attention: Hearings Clerk, Legal Division Post Office Box 4302 Baton Rouge, Louisiana 70821-4302

Upon the effective date, this permit shall replace the previously effective LPDES permit, LA004273 I.

Pursuant to LAC 33 :IX.270 l.L.4.a, monitoring results shall be reported to the Enforcement Division through a department-approved electronic document receiving system (NetDMR). Paper DMRs or an alternative

Post Office Box 4.H3

Baton Rouge, Louisiana 70821-4313

Phone 225-219-3181

Fax 225-219-3309 www.deq.louisiana.gov Entergy Operations Inc.

RE: LA0042731, Al No. 2889 Page 2

substitute may only be utilized by the permittee if the LDEQ Enforcement Division grants a written authorization to the permittee. See the enclosed NetDMR information sheet.

Pursuant to LAC 33:IX. 1309.1, LAC 33:IX.6509.A.1 and LAC 33:1.1701, you must pay any outstanding fees to the Department. Therefore, please verify your facility's fee status by contacting LDEQ's Office of Management and Finance, Financial Services Division at (225) 219-3863 or by email at DEO-lnvoices@LA.GOV. Any outstanding fees must be remitted via a check to the Louisiana Department of Environmental Quality within thirty (30) days after the effective date of your permit. Failure to pay the full amount due in the manner and time prescribed could result in applicable enforcement actions as prescribed in the Environmental Quality Act, including, but not limited to revocation or suspension of the applicable permit, and/or a civil penalty against you.

Should you have any questions concerning any part of the permit, please contact Amy Exnicios of the Office of Environmental Services at the address on the first page, by telephone at (225) 219-3501, or by email at amy.exnicios@la.gov. To ensure that all correspondence regarding this facility is properly filed, please reference your Al No. 2889 and LP DES permit number LA004273 I on all future correspondence to this Department.

Sincerely,

~A~

Aurelia S. Giacometto Secretary

ale

Attachment(s): including final permit and NetDMR information

c: 10-W

ec: Amy Exnicios Michelle Bickham Jenniffer Sheppard Melanie Connor Water Permits Division

Ms. Evelyn Rosborough (6WQ-CA)

U.S. EPA, Region VI

Permit Compliance Unit Capital Regional Office Office of Environmental Compliance LOUISIANA DEPARTMENT OF ENVIRONMENTAL QUALITY OFFICE OF ENVIRONMENTAL SERVICES

PUBLIC COMMENTS RESPONSE

SUMMARY

LOUISIANA POLLUTANT DISCHARGE ELIMINATION SYSTEM (LPDES)

PERMIT NO. LA0042731 AGENCY INTEREST (AI) NO. 2889 ACTIVITY NO. PER2022001

ENTERGY OPERA TIO NS INC.

RIVER BEND ST A TION ST. FRANCISVILLE, WEST FELICIANA PARISH, LOUISIANA

The Louisiana Department of Environmental Quality (LDEQ), Office of Environmental Services (OES), has issued Entergy Operations Inc., River Bend Station a Louisiana Pollutant Discharge Elimination System (LPDES) permit renewal. In this Public Comments Re!1ponse Summary, the LDEQ has responded to written comments submitted during the public comment period for the draft permit. The LDEQ published a public notice regarding the draft LPDES renewal permit to discharge cooling tower blowdown, low volume wastewaters, maintenance wastewaters, treated sanitary wastewater, metal cleaning wastewater, clarifier underflow, and hydrostatic test wastewater to the Mississippi River (via Outfalls 001 and 006) and stormwater runoff, low volume wastewaters, potable water, clarified river water, well water, air conditioning condensate, maintenance wastewaters, cooling tower drift/mist, vehicle washwater, and hydrostatic test wastewater to Grant's Bayou, thence to Alligator Bayou, thence to Thompson Creek (via Outfalls 002, 003, 004, and 005) from an existing steam electric generating facility located at 5485 U. S. Highway 61 in St. Francisville, West Feliciana.

A notice of the draft water permit decision for Entergy Operations Inc., River Bend Station (River Bend), issued by the LDEQ and requesting public comment was published on the LDEQ Website on December 15, 2023. The public notice was also mailed to individuals listed in the Office of Environmental Services Public Notice Mailing List on December 14, 2023. The public notice required that comments and requests for public hearings must be received by 4:30 pm CST, Thursday, January 18, 2024. The water permit application, additional information, draft permit, and the Fact Sheet and Rationale associated with the draft water permit were available for review at the LDEQ Public Records Center in Baton Rouge and on the LDEQ permits public notice webpage. The information was also accessible to the public in the LDEQ's Electronic Document Management System (EDMS). 1

1 EOMS stands for Electronic Oocument Management System, the LOEQ's electronic repo s itory of official records that have been created or received by LOEQ. Employees and members of the public can search and retrieve documents stored in EOMS via this web application. (See hllp://rdms.dcq.louisiana.l!ov ).

Entergy Operations Inc.

River Bend Station LA004273 I, Al No. 2889 Page 2 of 16

FACILITY INFORMATION

1. Description of Facility

River Bend is a steam electric generating facility located at 5485 U. S. Highway 61 in St.

Francisville, West Felliciana Parish. 2 The applicant's mailing address is 5485 U. S.

Highway 61, St. Francisville, LA 70775.

2. Facility Operations

River Bend is a nuclear fueled steam electric generating facility in operation since 1986.

The facility includes one generating unit with a net generating capacity of approximately 978 megawatts.

The primary fuel source for the plant is enriched Uranium-235. This Office does not 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 the radiation standards established and regulated by the NRC. This LPDES permit renewal does not address radiation standards.

The primary discharge from the facility consists of cooling tower blowdown. The electric plant withdraws cooling water from a single intake structure on the Mississippi River at a maximum rate of approximately 46 million gallons per day (MGD). At the site, there are four eight-cell induced draft cooling towers that recirculate water that is pumped through the turbine condenser and service water heat exchangers, then the heated water is returned to the cooling towers. To control cooling water quality, some of the water is continually drained from the system (blowdown) and discharged at Outfall 001. Water loss in the cooling system due to evaporation and blowdown is replenished with clarified river water.

The majority of process wastewater from the plant is cooling tower blowdown, although smaller wastewater flows are mixed with the blowdown prior to discharge.

3. Permit Action

This renewal permit authorizes River Bend to discharge cooling tower blowdown, low volume wastewaters, maintenance wastewaters, treated sanitary wastewater, metal cleaning wastewater, clarifier underflow, and hydrostatic test wastewater to the Mississippi River (via Outfalls 001 and 006) and stormwater runoff, low volume wastewaters, potable water, clarified river water, well water, air conditioning condensate, maintenance wastewaters, cooling tower drift/mist, vehicle washwater, and hydrostatic test wastewater to Grant's Bayou, thence to Alligator Bayou, thence to Thompson Creek (via Outfalls 002, 003, 004, and 005).

2 See LPDES Pennit Application (EDMS Document No. I 3294077. page 21 of 461 ).

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River Bend Station LA004273 I, Al No. 2889 Page 3 of 16

This permit issuance is a renewal discharge permit for this existing facility. Through this permit action, the LDEQ authorizes River Bend to discharge wastewater in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in the permit. River Bend submitted a water permit application received May 4, 2022;3 and additional information dated June 16, 2022;4 September 14, 2022; 5 June 27, 2023;6 July 11, 2023; 7 August 16, 2023; 8 and October 19, 2023; 9 requesting a renewal LPDES permit for the discharges associated with the steam electric generating facility pursuant to the LPDES Program under the Clean Water Act, 33 U.S.C. 1251 et. seq., LA R.S. 30:2001 et.

seq.

The permit regulates the pollutants allowed to be discharged through the establishment of effluent limits and monitoring requirements for those same pollutants. Compliance with the permit limitations and monitoring requirements is expected to ensure that general and numerical water quality criteria are maintained, and thus, the discharge is not expected to cause adverse environmental effects.

As in all LPDES permits, a reopener clause has been included in the permit to allow for more stringent limitations or requirements should they be necessary in the future.

The outfalls listed below are authorized in the LPDES permit. The parameters and basis for effluent limitations for each outfall are described below: 10

Outfall 001 - the continuous discharge of cooling tower blowdown; previously monitored effluent from Internal Outfalls 101, 201, 301, 401, 501, and 60 I; and previously monitored hydrostatic test wastewater from Internal Outfall 007

Flow -Monthly average and daily maximum reporting for flow has been retained from the previous permit and are in accordance with LAC 33:IX.2707.1.1.b. Flow shall be reported continuously by recorder.

Temperature - Monthly average and daily maximum limitations have been retained from the previous permit based on BP J 11 due to the heat sources in the wastewaters. A mixing zone temperature calculation was conducted and the proposed temperature limits will not cause an impairment to the receiving stream. See Appendix A-3 of the Fact Sheet and Rationale. 12 Temperature shall be monitored continuously by recorder.

3 See EDMS Document No. 13294077.

4 See EDMS Document No. 13348078.

5 See EDMS Document No. 13469712.

6 See EDMS Document No. 13871181.

7 See EDMS Document No. 14132117.

8 See EDMS Document No. 13954594.

9 See EDMS Document No. 14028742.

10 See LPDES Draft Permit (EDMS Document No. 14081111, pages93-108 of 175).

11 BP J-Best Professional Judgement 12 EDMS Document No. 14081111, page 124 of 175.

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River Bend Station LA004273 I, Al No. 2889 Page 4 of 16

Free Available Chlorine (F AC) - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 13 423.13 (d)

(1) and (2) and 423.13 (m). FAC shall be monitored weekly by grab sample during periods of chlorination or chlorine compound usage discharged on an intermittent basis.

Total Chromium - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.13 (d) (1) and 40 CFR 423.13 (m). Total Chromium shall be monitored once annually by grab sample.

Total Zinc - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.13 (d) (I) and 40 CFR 423.13 (m). Total Zinc shall be monitored weekly by grab sample.

pH - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423. I 2(b) ( 1 ). pH shall be monitored weekly by grab sample.

Whole Effluent Toxicity (WET) Testing: Whole Effluent Acute Toxicity Testing requirements for Pimephales promelas and Daphnia pulex have been established in accordance with the Permitting Guidance Document for Implementing Louisiana Surface Water Quality Standards, LDEQ, July 5, 2022, (water quality implementation plan) 14 and are consistent with "Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms." 15

Internal Outfall 101 - the intermittent discharge of low level radioactive low volume wastewater from the liquid radwaste wastewater system (L WS); maintenance wastewaters; and previously monitored hydrostatic test wastewater from Internal Outfall 007. During maintenance activities, Internal Outfall 101 may be discharged to Outfall 001 via the cooling tower flume rather than the common discharge header. (*ll

(* 1) The permittee shall monitor all low volume wastewater sources that contribute to Outfall 101 from various locations on the property monthly when discharging.

Low volume wastewater includes equipment and building floor drain sumps, equipment washing, personnel decontamination, laboratory drains, filter press effluent, Reverse Osmosis (RO) unit wastewater, and other low volume wastewater sources as defined in 40 CFR 423.

Flow - Monthly average and daily maximum reporting for flow has been retained from the previous permit and are in accordance with LAC 33:IX.2707.1.1.b. Flow shall be estimated monthly.

13 CFR =Code of Federal Regulations 14 See EDMS Document No. I 3380688.

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River Bend Station LA004273 I, Al No. 2889 Page 5 of 16

TSS 16 - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.12 (b) (3) and 40 CFR 423.12 (b)

(12). TSS shall be monitored monthly by grab sample.

Oil & Grease - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.12 (b) (3) and 40 CFR 423.12 (b) (12). Oil & Grease shall be monitored monthly by grab sample.

Internal Outfall 201 - the intermittent discharge of treated sanitary wastewater, low volume wastewaters, maintenance wastewaters, and previously monitored hydrostatic test wastewater from Internal Outfall 007. During maintenance activities on the common discharge header, previously monitored effluent from Outfall 201 may be routed to Outfall 002

During maintenance act1v1tJes, sanitary wastewater may be combined with previously monitored hydrostatic test wastewater, wastewater from floor drains of the control building and the diesel generator oil/water separator (and other low volume wastewaters as defined in 40 CFR 423), and maintenance wastewaters. Sanitary wastewaters and wastewaters from maintenance activities are sent to the sanitary treatment system. The commingled wastewaters are monitored at Outfall 201 prior to combining with other waters at Final Outfall 001 (the common discharge header) for subsequent discharge to the Mississippi River. Additionally, during infrequent maintenance activities on the common discharge header, previously monitored effluent from Outfall 201 may be discharged to Grant's Bayou through Outfall 002.

Flow - Monthly average and daily maximum reporting for flow has been retained from the previous permit and are in accordance with LAC 33:IX.2707.I. l.b. Flow shall be estimated weekly.

BODs 17 and Fecal Coliform - Monthly average and daily maximum limitations have. been retained from the previous permit and are in accordance with current guidance for similar discharges from other facilities and the LPDES Class II Sanitary General Permit LAG540000. 18 BODs and Fecal Coliform shall be monitored quarterly by grab sample.

TSS - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with the Class II Sanitary Discharge General Permit, LAG540000. 19 Limitations for TSS for low volume wastewaters are established at 40 CFR 423.12 (b) (3) and 40 CFR 423.12 (b) (12). However, these limitations are not as stringent as the limitations for TSS contained in the Class II Sanitary General Permit.

16 TSS = Total Suspended Solids 17 80D5 = Biological Oxygen Demand 18 See EDMS Document No. 13969479.

19 See EDMS Document No. 13969479.

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Therefore, the limitations for TSS established in the current permit are based on the sanitary limits. TSS shall be monitored weekly by grab sample.

Oil & Grease - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.12 (b) (3) and 40 CFR 423.12 (b) (12). Oil & Grease shall be monitored weekly by grab sample.

Internal Outfall 301 - the intermittent discharge of mobile metal ( chemical and non-chemical) cleaning wastewater generated from cleaning processes of internal components of plant equipment

Flow - Monthly average and daily maximum reporting for flow has been retained from the previous permit and are in accordance with LAC 33:IX.2707.1.1.b. Flow shall be estimated weekly.

TSS - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.12 (b) (5) and 40 CFR 423.12 (b)

( 12). TSS shall be monitored weekly by grab sample.

Oil & Grease - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.12 (b) (5) and 40 CFR 423.12 (b) (12). Oil & Grease shall be monitored weekly by grab sample.

Total Copper - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.13 (e) and (m). Total Copper shall be monitored weekly by grab sample.

Total Iron - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.13 (e) and (m). Total Iron shall be monitored weekly by grab sample.

Internal Outfall 401 - the intermittent discharge of low volume wastewaterC*J) treatment systems and previously monitored hydrostatic test wastewater from Internal Outfall 007 to Final Outfall 001 via the common header. During maintenance activities, Internal Outfall 401 may be discharged via the cooling tower flume rather than the common discharge header. Also, during maintenance activities, reverse osmosis reject from the makeup water polishing system may be discharged via Internal Outfall 401 rather than Outfall 003

Internal Outfall 501 - the intermittent discharge of low volume wastewaters, including but not limited to, wastewaters from the mobile standby service water reverse osmosis (RO) filtration unit, standby cooling tower reject, and/or other low volume wastewaters as defined in 40 CFR 423; and previously monitored hydrostatic test wastewater from Internal Outfall 007 Entergy Operations Inc.

River Bend Station LA004273 I, Al No. 2889 Page 7 of 16

Internal Outfall 601 <* 2 l - the intermittent discharge of low volume wastewater, including but not limited to, wastewaters from the filter backwash from service water polishing and feed-and-bleed from the service water system and other low volume wastewaters as defined in 40 CFR 423; and previously monitored hydrostatic test wastewater from Internal Outfall 007

(* 1 )The low volume waste management systems receive effluent from ion exchange resin backwash and regeneration, auxiliary boiler blowdown, floor washdown, equipment washing, personnel decontamination, laboratory drains, filter press, and maintenance wastewaters and other low volume wastewater sources as defined in 40 CFR 423.

(*2)Note: This system is not normally hooked up and would be for special projects involving the service water system.

Flow - Monthly average and daily maximum reporting for flow has been retained from the previous permit and are in accordance with LAC 33:IX.2707.1.1.b. Flow shall be estimated monthly.

TSS - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with the 40 CFR 423.12 (b) (3) and 40 CFR 423.12 (b) (12). TSS shall be monitored monthly by grab sample.

Oil & Grease - Monthly average and daily maximum limitations have been retained from the previous permit and are in accordance with the 40 CFR 423.12 (b) (3) and 40 CFR 423.12 (b) (12). Oil & Grease shall be monitored monthly by grab sample.

Outfall 002 - the intermittent discharge of stormwater runoff; air conditioning condensate; potable water; clarified river water; well water; maintenance wastewaters; low volwne wastewaters as defined in 40 CFR 423, including but not limited to, bearing cooling water; and previously monitored hydrostatic test wastewater from Internal Outfall 007. During periods of maintenance activities on the common discharge header, previously monitored treated wastewater from Internal Outfall 20 l may be discharged through Outfall 002.

There are two operational scenarios for Outfall 002: ( l) discharges which do not include low volume wastewaters; and (2) discharges which include low volume wastewaters.

When discharging low volume wastewaters, additional effluent limitations and monitoring requirements apply.

Flow - Daily maximum reporting requirements have been retained from the previous permit and monthly average reporting requirements have been added and are in accordance with LAC 33:IX.2707.1.1.b. Flow shall be estimated quarterly when no low volume wastewater is being discharged through Outfall 002. Flow shall be estimated monthly when discharging low volume.

Entergy Operations Inc.

River Bend Station LA0042731, Al No. 2889 Page 8 of 16

TOC 20 - Daily maximum limitations have been retained from the previous permit and are 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) 21 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR050000. 22 TOC shall be monitored quarterly by grab sample.

Oil & Grease - Daily maximum limitations have been retained from the previous permit and are 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) 23 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR050000. 24 When low volume waste is not being discharged through Outfall 002, Oil & Grease shall be monitored quarterly by grab sample. Oil & Grease shall be monitored monthly by grab sample when discharging low volume wastewater.

Limitations for Oil & Grease for low volume wastewaters are established at 40 CFR 423.12 (b) (3). However, these limitations are not as stringent as the limitation for Oil &

Grease contained in this Office's guidance on stormwater, letter dated 6/17/87, from J.

Dale Givens (LDEQ) to Myron Knudson (EPA Region 6) 25 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR050000. 26 Therefore, the limitation for Oil & Grease established in the permit is based on the stormwater limitation.

TSS - Daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.12 (b) (3) and 40 CFR 423.12 (b) (12) and on Outfall 003 of this permit. TSS shall be monitored monthly by grab sample when discharging low volume wastewater.

pH - Daily maximum and monthly average limitations have been retained from the previous permit and are 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)27 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR050000. 28 When low volume waste is not being discharged through Outfall 002 pH shall be monitored quarterly by grab sample. Monitoring for pH shall be conducted monthly by grab sample when discharging low volume wastewater.

Outfall 003 -the intermittent discharge of stormwater runoff; maintenance wastewaters including but not limited to flushing of piping systems and vessels (including Fire

20 TOC = Total Organic Carbon 21 See EDMS Document No. 6341434.

22 See EDMS Document No. 12959823.

23 See EDMS Document No. 6341434.

24 See EDMS Document No. 12959823.

25 See EDMS Document No. 6341434.

26 See EDMS Document No. 12959823.

27 See EDMS Document No. 6341434.

28 See EDMS Document No. 12959823.

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Protection Water Supply System and Automatic Sprinkler System); low volume wastewaters; air conditioning condensate; previously monitored hydrostatic test wastewater from Internal Outfall 007; and de minimis quantities of cooling tower drift/mist

There are two operational scenarios for Outfall 003: (1) discharges which do not include low volume wastewaters; and (2) discharges which include low volume wastewaters.

When discharging low volume wastewaters, additional effluent limitations and monitoring requirements apply.

Flow - Daily maximum reporting requirements have been retained from the previous permit and monthly average reporting requirements have been added and are in accordance with LAC 33:IX.2707.1.1.b. Flow shall be estimated quarterly when no low volume wastewater is being discharged through Outfall 003. Flow shall be estimated monthly when discharging low volume wastewater.

TOC - Daily maximum limitations have been retained from the previous permit and are 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) 29 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR0S0000. 30 TOC shall be monitored quarterly by grab sample.

Oil & Grease - Daily maximum limitations have been retained from the previous permit and are 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) 31 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR050000. 32 When low volume waste is not being discharged through Outfall 003, Oil & Grease shall be monitored quarterly by grab sample. Oil & Grease shall be monitored monthly by grab sample when discharging low volume wastewater.

Limitations for Oil & Grease for low volume wastewaters are established at 40 CFR 423.12 (b) (3). However, these limitations are not as stringent as the limitation for Oil &

Grease contained in this Office's guidance on stormwater, letter dated 6/17/87, from J.

Dale Givens (LDEQ) to Myron Knudson (EPA Region 6) 33 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR050000. 34 Therefore, the limitation for Oil & Grease established in the current permit is based on the stormwater limitation.

29 See EDMS Document No. 6341434.

30 See EDMS Document No. 12959823.

31 See EDMS Document No. 6341434.

32 See EDMS Document No. 12959823.

33 See EDMS Document No. 6341434.

34 See EDMS Document No. 12959823.

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TSS - Daily maximum limitations have been retained from the previous permit and are in accordance with 40 CFR 423.12 (b) (3) and 40 CFR 423.12 (b) (12). TSS shall be monitored monthly by grab sample when discharging low volume wastewater.

Total Copper and Total Zinc -Monthly average and daily maximum reporting requirements have retained from the previous permit for data gathering purposes based on analytical data submitted with the application. Total Copper and Total Zinc shall be monitored monthly by grab sample.

pH - The current permit established a minimum discharge limitation of 6.0 standard units and a maximum limitation of 9.0 standard units 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) 35 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR0S0000.36 These limitations are retained with a monitoring frequency of quarterly by grab sample. Monitoring for pH is monthly by grab sample when discharging low volume wastewater based on the current permit and similar discharges from other industrial facilities.

Outfall 004 - the intermittent discharge of stormwater runoff from the office areas, warehouse areas, materials storage areas, and equipment/vehicle maintenance areas; maintenance wastewaters, including but not limited to, flushing of piping systems and vessels (Fire Protection Water Supply System and Automatic Sprinkler System, etc.); air conditioning condensate; potable water; previously monitored hydrostatic test wastewater from Internal Outfall 007; and previously monitored effluent from Internal Outfall 104

Outfall 005 - the intermittent discharge of stormwater runoff from the cooling tower yard, air conditioning condensate, previously monitored hydrostatic test wastewater from Internal Outfall 007, and de minimis quantities of cooling tower drift/mist

Flow - Daily maximum reporting requirements have been retained from the previous permit and monthly average reporting requirements have been added and are in accordance with LAC 33:IX.2707.1.1.b. Flow shall be estimated quarterly.

TOC - Daily maximum limitations have been retained from the previous permit and are 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) 37 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR0S0000. 38 TOC shall be monitored quarterly by grab sample.

Oil & Grease - Daily maximum limitations have been retained from the previous permit and are in accordance with this Office's guidance on stormwater, letter dated 6/17/87,

35 See EDMS Document No. 6341434.

36 See EDMS Document No. 12959823.

37 See EDMS Document No. 6341434.

38 See EDMS Document No. 12959823.

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River Bend Station LA0042731, Al No. 2889 Page 11 of 16

from J. Dale Givens (LDEQ) to Myron Knudson (EPA Region 6) 39 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR050000. 40 Oil and Grease shall be monitored quarterly by grab sample.

pH - Daily maximum limitations have been retained from the previous permit and are 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)41 and the LPDES Multi-Sector General Permit (MSGP) for Storm Water Discharges Associated with Industrial Activities, LAR0S0000. 42 pH shall be monitored quarterly by grab sample.

Internal Outfall 104 - the intermittent discharge of exterior vehicle washwater

Flow - Monthly average and daily maximum reporting for flow has been retained from the previous permit and are in accordance with LAC 33:IX.2707.1. l.b. Flow shall be estimated quarterly.

COD 43 - Daily maximum limitations have been retained from the previous permit and are in accordance with the Exterior Vehicle Wash Wastewater General Permit (LAG750000). 44 COD shall be monitored quarterly by grab sample.

TSS - Daily maximum limitations have been retained from the previous permit and are in accordance with the Exterior Vehicle Wash Wastewater General Permit (LAG750000). 45 TSS shall be monitored quarterly by grab sample.

Oil & Grease - Daily maximum limitations have been retained from the previous permit and are in accordance with the Exterior Vehicle Wash Wastewater General Permit (LAG750000). 46 Oil & Grease shall be monitored quarterly by grab sample.

pH - Daily maximum limitations have been retained from the previous permit and are in accordance with the Exterior Vehicle Wash Wastewater General Permit (LAG750000). 47 pH shall be monitored quarterly by grab sample.

Soaps and Detergents: document in a quarterly inventory record the quantity and type of any soap and/or detergent used during each calendar month.

39 See EDMS Document No. 6341434.

40 See EDMS Document No. 12959823.

41 See EDMS Document No. 6341434.

42 See EDMS Document No. 12959823.

43 COD =Chemical Oxygen Demand 44 See EDMS Document No. I 1652155.

45 See EDMS Document No. I 1652155.

46 See EDMS Document No. I 1652155.

47 See EDMS Document No. I 1652155.

Entergy Operations Inc.

River Bend Station LA004273 I, Al No. 2889 Page 12 of 16

Outfall 006 - the intermittent discharge of clarifier underflow

Flow - Daily maximum reporting requirements have been retained from the previous permit and monthly average reporting requirements have been added and are in accordance with LAC 33:IX.2707.l.1.b. Flow shall be estimated daily.

Coagulants/Clarifying Agents Used - The requirement to record the quantity and type of each clarifying agent used in the intake water treatment clarification system during the sampling month has been retained from the previous permit. Records of the quantity and type of all coagulants (clarifying agents) used shall be retained for three years following the Standard Conditions Section C.3. No DMR 48 reporting shall be required. The permittee shall notify the Office of Environmental Services of any proposed changes to the water treatment chemicals used in the raw water clarifier. Recording of clarifying agents is consistent with requirements for similar discharges from other facilities.

By BPJ, this Office has determined that no additional effluent limitations would be required for clarifier underflow discharges to the Mississippi River because dilution ratios are typically 1000: 1 or higher. A literature review by the Illinois Department of Energy and Natural Resources Indicated that the following parameters are present in clarifier return sludge:

Parameter Concentration in mg/L 49 TSS 1,000 - 35,000 Total Cadmium 0.002 Total Chromium 0.002 Lead 0.038 Copper 0.002 Iron 14.0 Zinc 0.014 Magnesium 3.3

For the parameters that we have standards for, Cadmium, Chromium, Lead, Copper and Zinc, a dilution ratio of I 000: I or greater at the edge of the mixing zone would render these toxics undetectable at the edge of the mixing zone and well below numerical criteria.

With this in mind, there are no promulgated guidelines regulating these toxics and TSS from this type of discharge; therefore, no technology based limits are proposed. Further, review of analytical data reported in applications for similarly permitted discharges demonstrated that the data for most of these parameters were minimum quantification

48 DMR= Discharge Monitoring Report 49 Mg/I-milligram per liter Entergy Operations Inc.

River Bend Station LA004273 I, Al No. 2889 Page 13 of 16

levels. TSS levels at the edge of the mixing zone would not have any detectable effect on receiving water quality after mixing.

The clarifier underflow discharge from River Bend Station has a dilution ratio<*I) of approximately 401023:1 at the edge of the mixing zone. The parameters from River Bend Station's clarifier underflow discharge, including TSS, would be undetectable and well below numerical criteria (by orders of magnitude) at the edge of the mixing zone.

It has been determined that compliance with the requirements in the LPDES permit provide for the protection of water quality standards and support of the designated uses of the receiving stream.

<*I) Dilution ratio= 1/xd; xd= clarifier underflow 30-day max flow in MGD 50/( clarifier underflow 30-day max flow in MGD + stream critical flow in MGD)

Internal Outfall 007 - the intermittent discharge of hydrostatic test wastewater

Flow, TSS, Oil and Grease, and pH shall be measured on discharges from all new and existing pipelines, flowlines, vessels, or tanks. In addition TOC shall be measured on discharges from existing pipelines, flowlines, vessels, or tanks which have previously been in service; (i.e., those which are not new). Benzene, Total BTEX 51, and Total Lead shall be measured on discharges from existing pipelines, flowlines, vessels, or tanks which have been used for the storage or transportation of liquid or gaseous petroleum hydrocarbons.

Report either a TSS effluent value or a TSS net value on the DMR. If a TSS effluent value is reported, then a no data indicator (NODI) code of 9 for conditional/not required should be used for the TSS net value. If a TSS net value is reported, then a no data indicator (NODI) code of 9 for conditional/not required should be used for the TSS effluent value.

If the effluent is being returned to the same water source from which the intake water was obtained, a TSS net value may be calculated. In these cases, concurrent sampling of the influent and the effluent is required, and the net value shall not exceed 90 mg/L. If TSS net value is calculated, enter the effluent and intake values in the comment section of the DMR.

Flow -Monthly average and daily maximum reporting requirement for flow have been retained from the previous permit and are based on LAC 33:IX.2707.1.1.b. Flow shall be estimated once prior to discharge.

50 MGD= Million Gallons per Day 51 BTEX = benzene, toluene, ethylbenzene, and total xylene Entergy Operations Inc.

River Bend Station LA004273 I, Al No. 2889 Page 14 of 16

TSS - Daily maximum limitations have been retained from the previous permit and are in accordance with LPDES General Permit for Hydrostatic Test Wastewater, LAG670000. 52 TSS shall be monitored once prior to discharge by grab sample.

Oil & Grease - Daily maximum limitations have been retained from the previous permit and are in accordance with LPDES General Permit for Hydrostatic Test Wastewater, LAG670000. 53 Oil & Grease shall be monitored once prior to discharge by grab sample.

TOC - Daily maximum limitations have been retained from the previous permit and are in accordance with LPDES General Permit for Hydrostatic Test Wastewater, LAG670000. 54 TOC shall be monitored once prior to discharge by grab sample.

Benzene, Total BTEX, and Lead - Daily maximum limitations have been retained from the previous permit and are in accordance with LPDES General Permit for Hydrostatic Test Wastewater, LAG670000. 55 Benzene, Total BTEX, and Lead shall be monitored once per discharge event by grab sample.

Jlli - Daily maximum and monthly average limitations have been retained from the previous permit and are in accordance with LPDES General Permit for Hydrostatic Test Wastewater, LAG670000. 56 pH shall be monitored once prior to discharge by grab sample.

PUBLIC COMMENTS

This document responds to pertinent statements (questions and/or comments) relevant to the LPDES water permit regarding the impact of discharges on water quality from Entergy Operations Inc., River Bend Station located at 5485 U. S. Highway 61 in St. Francisville, West Feliciana Parish, Louisiana. Issues identified from the commenters' statements have been numbered below. Comments have been summarized from written statements and appear as italicized text. Documents containing the commenters' complete statements are located in the LDEQ's EDMS.

The LDEQ received written comments submitted by John Daigle on behalf of Lower Mississippi Riverkeeper (LMRK.)57 on January 18, 2024. The LDEQ's responses to comments received during the public comment period are provided below.

52 See EDMS Document No. 13827938.

53 See EDMS Document No. 13827938 54 See EDMS Document No. 13827938.

55 See EDMS Document No. 13827938.

56 See EDMS Document No. 11039202.

57 See EDMS Document No. 14129343.

Entergy Operations Inc.

River Bend Station LA004273 I, Al No. 2889 Page 15 of 16

PUBLIC COMMENT #1:

We are concerned about the level of discharge into small waterbodies Grant's Creek, Alligator Bayou, and Thompson Creek, with total intermittent (30-day Max) flow of 4. I 45 MGD, including

2. 775 MGD from Outfall 004. These flows convert to 6.41 cubic feet per second (cf~). The recent data review showing apparent higher than MQL levels from Outfall 003 for Total Cooper, Total Zinc, and Total Phenols factor into this concern. 58

RESPONSE TO PUBLIC COMMENT #1:

The discharges from Outfalls 002, 003, 004, and 005 primarily consist of stormwater and are intermittent in nature. A reasonable potential analysis was not performed on Outfalls 002-005 discharging to Grant's Bayou via the plant drainage ditch system, thence to Alligator Bayou, thence to Thompson Creek, thence to the Mississippi River because those discharges do not occur when the receiving stream is at critical conditions. Critical conditions occur when a receiving stream is at low flow conditions; low flow conditions do not occur during rain events.

With regards to Total Cooper, Total Zinc, and Total Phenols, a permit requirement in Other Conditions, Paragraphs E and J was included in the permit to conduct an investigation into possible sources of these pollutants at Outfall 003 due to application analytical data for Total Cooper, Total Zinc, and Total Phenols above the MQL. 59 The investigation report will reviewed and evaluated by LDEQ and potential modifications will be implemented as needed.

In development of the LPDES permit for River Bend, the facility's discharges were evaluated in accordance with 40 CFR 122.44(d)(l)/LAC 33:IX.2707.D.l. and the Water Quality Implementation Plan (Permitting Guidance Document for Implementing Louisiana Surface Water Quality Standards, LDEQ, July 5, 2022). 60 Additionally, the LPDES permit was written in accordance with the appropriate federal and state regulations, and the Clean Water Act (CWA),

and it has been determined that the discharges, as authorized by the permit, are not expected to adversely impact the receiving waters. The permit requires that the discharges be controlled to meet or exceed the requirements of all applicable regulations and defined permit conditions; therefore, the permit is designed to be protective of the environment, human health, and all designated uses.

CONCLUSION:

The LDEQ's Office of Environmental Services, Water Permits Division, has conducted a review of the administrative record, including the permit application submitted by Entergy Operations Inc. as well as comments received during the public notice period. The LPDES Permit No.

LA004273 l has been issued to Entergy Operations Inc. for their steam electric generating facility.

58 See EDMS Document No. 14129343, Page 3 of 4.

59 MQL = Minimum Quantification Level 60 See Permitting Guidance Document for Implementing Louisiana Surface Water Quality Standards (EDMS Document No.

13380688).

Entergy Operations Inc.

River Bend Station LA004273 I, Al No. 2889 Page 16 of 16

The permit for Entergy Operations Inc., River Bend Station will require that the discharges be controlled to meet or exceed the requirements of all applicable regulations and defined permit conditions.

Based on a careful review and evaluation of the entire administrative record, which includes the permit application, the draft permit, and all public comments, the Louisiana Department of Environmental Quality, Office of Environmental Services, finds that the permit for Entergy Operations Inc., River Bend Station complies with all applicable federal and state statutes and regulations. The standards and requirements imposed upon this facility through statutes, regulations, and permit conditions are designed to provide a sufficient level of protection to avoid adverse environmental impacts to the maximum extent possible.

Aurelia S. Giacometto, Secretary tLid~

Louisiana Department of Environmental Quality NetDMR and Electronic DMR Reporting

- Useful Information**

EPA Electronic Reporting Rule o h11p,: 1\\\\ ' \\\\,,.cpa.~o, 'n,1111,Ji *11L'L'~2-~Ll;.J2t.~r1i11 2 o Phase I-Requires electronic submittal of DM Rs as of December 2 L 2016 o Phase 11-Requires electronic submittal of NO ls and Program Reports as of December 21, 2020 o Electronic DMR Reporting requirement adopted by LDEQ Water Regulations May 20.2016

LDEQ Public Website o http://deq.louisiana.gov_L o 225-219-5337 or 866-896-5337 (customer service)

LDEQ NetDMR Information o http://deq.louisiana.gov/page/netdmr o Email dcq11ctdll1r'r1 l,1.~1*

o Call 225-219-3752 or 225-219-3767

LDEQ NetDMR Training (training materials and schedule) o http://deq.louisiana.gov/page/netdrnr-t, aining

NetDMR Homepage o http,:, ' 11ctd111r.cp,1.~P\\

Steps to Submit DMRs via NetDMR o Register in CDX o Request Access to Permit in NetDMR o Submit Subscriber Agreement to LDEQ ( electronically or via paper) o Receive approval by LDEQ o Enter DMR data and add any attachments o Sign and Submit On-line o Download Submittal from NetDMR or EDMS

No Data Indicator (NODI) Codes o NODI codes are used to indicate why no DMR value was submitted for a specific data field. parameter. or whole DMR o List of Common NODI Codes

C = no discharge

9 = conditional monitoring/ not required this period

E = analysis not conducted (failure to sample)

B = below detection limit

D = lost sample

G = equipment failure

H = invalid test

NetDMR Attachments (cover letters, noncompliance reports, etc.)

o Click the --Add Attachment.. button on the DMR screen. Click --Browse..... and select the document you wish to attach to the DMR o LDEQ only accepts PDF files as attachments

EDMS (search documents related to a facility) o http://deq.louisiana.gov/page/edms PERMITTEE NAME/ADDRESS 11nc1ude Fae lity Name/Locat ion if Diffe rent) NATIONAL POLLUTANT DISCHARGE EUMINATION SYSTEM (NPOESl Form Approved.

NAME DISCHARGE MONITORING REPORT (DMR) 0MB No. 2040-0004

ADDRESS PERMIT NUMBER DISCHARGE NUMBER

MONITORING PERIOD Ocheck here if No Discharge FACILITY YEAR I MO I DAY I IYEAR I MO I DAY LOCATION FROM I I I TO I I I NOTE: Read Instructions before completing this form

PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO FREQUENCY SAMPLE EX OF TYPE ANALYSIS X VALUE VALUE UNITS VALUE VALUE VALUE UNITS

MEASUREMENT SAMPLE

PERMIT REQUIREMENT

SAMPLE MEASUREMENT PERMIT REQUIREMENT

SAMPLE MEASUREMENT

REQUIREMENT PERMIT

MEASUREMENT SAMPLE

PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT

SAMPLE MEASUREMENT PERMIT REQUIREMENT NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNOER PENALTY OF LAW THAT THIS DOCUMENT ANO ALL ATTACHMENTS !/vERE PREPARED TELEPHONE DATE UNDER MY DIRECTION DR SUPERVISION IN ACCORDANCE WITH A SYSTEM DESlGNED TD ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER ANO EVALUATE THE INFORMATION SUBMITTED BASEO ON MY INQUIRY OF THE PERSON OR PERSONS WHO MANAGE THE SYSTEM OR THOSE PERSONS OIRECTL Y RESPONSIBLE FOR GATHERING THE INFORMATION THE INFORMATION SUBMITTED IS. TO THE BEST OF MY KNOWLEDGE ANO BELIEF TRUE ACCURATE ANO COMPLETE I I AM AWARE THAT THERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION INCLUDING THE POSSIBILITY OF FINE ANO IMPRISONMENT FOR KNOWING VIOLATIONS SIGNATURE OF PRINCIPAL EXECUTIVE TYPED OR PRINTED OFFICER OR AUTHORIZED AGENT ~~I NUMBER YEAR MO DAY COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here)

EPA Form 3320-1 PAGE OF GUIDANCE TO UNDERSTANDING THE WATER PERMIT FORMAT

components of the Permit Report

1. General Information Sheet - A summary of the facility information, such as all permit and ID numbers, facility physical and malling addresses, latitude/longitude at front gate, facility contacts and phone numbers, Standard Industrial Classification (SIC) and North American Industry Classification (NAICS) codes.

2. Inventory Sheet - Lists all Sis and descriptions, any relationships that may exist between Sis, and any alternate identification for the Sis.

3. Permit Requirements - Contains the Effluent Limitations and Monitoring Requirements, Submittal/Action Requirements, and Narrative Requirements Sections for each SI. The requirements for the FAC are listed after the requirements for each outfall.

a. Effluent Limitations and Monitoring Requirements - Outfalls are listed; including Parameters, Discharge Limitations and Units, Sample Type, Frequency, and Which Months. See example below.

RLP 2 : Outfall 001 - outfall description

\\. ::Disth.i:ae.,lin'litatJpns,*;-.. ; ~... : *.>>< -:, '. I

4'4onltddng~f!.~YIJYL~ett~.

Parameter * *stc,r~t *9~~nt _lfyJ_, ".:Qua_._* :nt~l. ~oao~, r ~-,_Q* :.uality./

Q~al~;-* ~/. : *<_ q~_._.lti_}_. *:.;*: -rq~_;,\\!Wt -. ~F.' ~---* -~: µEftl :*_:.; *_, ;. \\'sa_~J~e1ei:;'*l ~.6,~h,.

L:.oaglng,.**. Joad_lng

t ~ IQg*..,Cone.. *.onr.,: :,.o;fdc;:~:*.. _,.~f:lc t *: - *,*.~-*.. _.* Type ;, : M0t1th

__ j~,,..,-. '"f.'\\,,* f., * * *1'*,~1 ~ --4.,

_,..,,.,. \\, *.* f" -I

*

Avelage Maxlfiiu_111 _ Units.. _* Minimum

Average Meilclmtii:n. *cunrts__ _. ___ k ~ *._ *:.. : - *,

s -

TSS (Total Suspended Solids) 00530 M6~vG I ------T-lb/day I I Mo32vG I WKLt5 AVG I mg/L -,-q~~rt~rly_ l _ sa~~~na I /e~r

Mercury - Interim o 71900 MO AVG MO AVG b/day quarter Y I composite Year Re-port- -,--Report I I I I I I I I T-24-=hf - -,- - All

Mercury - Final o 71900 0.00021 MO AVG MO AVG lb/day quarterly composite Year I 0.0005 I I I I I I I 24-hr I All

0- Phases

b. Submittal/Action Regujrements -All submittal actions are grouped by SI and follow the limitations and monitoring requirements section.

c. Narrative Requirements - Other requirements that don't fall under effluent limitations and monitoring section. Grouped by SI and follow the submittal action section.

Definitions Agency Interest (AI) - Any entity that is being regulated or is of interest to LDEQ.

Agency Interest (AI) ID - Unique numerical identifier of the AI.

FAC - Subject Item designated for requirements at the facility level.

Phases - Periods during which the associated requirement applies to the particular parameter. For Example, if the permit contains a compliance schedule with interim limits, this column will state the phase in which the compliance schedule of the associated requirement Is applicable.

Subject Item (SI) - Components or groups of components of an AI, including the AI itself. Each SI Is defined by a category and a type.

Subject Item ID - Identifier assigned sequentially to each SI within an AI. It is composed of three letters representing the category of the SI and is followed by the sequentially assigned number. For Example, RLP 1 & FAC 1.

TEMPO Activity Number - Each action taken for an AI. This identifier consists of a total of 11 characters, 3 letters represents the type of action followed by four digits representing the year the application was received by LDEQ, and four digits which are sequentially assigned. Example PER20130001, this would identify the activity as the first permitting action taken for this Agency Interest (AI) in the year 20:J.3; GEN20140001 would Identify the activity as the first general permitting action taken for this Agency Interest (Al) in the year 20:1.4.

Which Months - Denotes the months that have a particular parameter requirement. This is generally used for seasonal limitations.

General Information

Al ID: 2889 Entergy Operations Inc - River Bend Station Activity Number : PER20220001 Permit Number: LA0042731 Water

lndiv-Major-lndustrial

Alternate Identifiers Name User Group Dates

2212500009 AFS (EPA Air Facility System) AFS (EPA Air Facility System) 01-01-2000 3160-00009 CDS Number CDS Number 08-05-2002 74-0662730 Entergy Operations Inc Federal Tax ID 02-02-2001 LAD070664818 Entergy Operations Inc River Bend Sta Haz Waste EPA ID Number 08-18-1980

LA0042731 LPDES Permit# LPDES Permit# 05-22-2003 6462 ORIS Code ORIS Code 09-16-2008 Priority 2 Emergency Site Priority 2 Emergency Site 07-31-2012 NP001 Nuclear Power Plant Focus Billing # Radiation 07-10-2001 5087 X-Ray Registration Number Radiation X-ray Registration Number 11-21-1999 G-125-2104 Site Id# Solid Waste Facility No. 11-21-1999

35691 Entergy Operations Inc TEMPO Merge 06-21-2001 73644 River Bend Station TEMPO Merge 09-09-2001 9514 GSU River Bend Station TEMPO Merge 06-21-2001 63004628 UST Facility ID (from UST legacy data) UST FID # 10-12-2002 18000 Waste Tire Facility ID# Waste Tire Facility ID Number 02-24-2022 SRG-1664 Waste Tire One-Time Cleanup ID# Waste Tires 02-24-2022

Physical Location: 5485 Hwy 61 Main FAX: 2253813662 St. Francisville, LA 70775 Main Phone: 2256355000

Mailing Address: 5485 Hwy 61 St. Francisville, LA 70775

Location of Front Gate: -91.330622 Longitude, 30.7669 Latitude, Coordinate Method: Lat.\\Long. -

OMS, Coordinate Datum: NAD83

Related People: Mall Address Work Phone Email Relationship Edward Brooks 5484 Hwy 61 St. Francisville, LA 70775 2256355058 ebrook2@entergy.com Water Permit Contact For Jason Rivet 5485 US Highway 61 St. Francisville, LA 70775 2253815683 jrivet@entergy.com Asbestos Contact for Lionel (LJ) Bergeron PO Box 77330 Baton Rouge, LA 70879 2257539537 Waste Tires Contact for Melinda Taylor 5485 US Highway 61 St. Francisville, LA 70775 2256355103 mtayl 12@entergy.com Radiation Contact For Philip Hansett 5485 US Highway 61 St. Francisville, LA 70775 2253814374 phanset@entergy.com Responsible Official for General lnformatjon

Related Organizations: Malling Address Work Phone Relationship

Entergy Louisiana LLC PO Box 61000 Mail Unit L-ENT-5E New Orleans, LA 70161 5045766037 Owns Entergy Operations Inc 5485 Hwy 61 St. Francisville, LA 70775 2253814374 Air Billing Party for Haz. Waste Billing Party for Nuclear Power Plant Billing Party for Operates Radiation Certification Billing Party for Radiation License Billing Party for Radiation Registration Billing Party for Water Billing Party for Environmental Industries Recycling PO Box 1194 Port Allen, LA 707671194 2253448298 Provides environmental services for Inc

SIC Codes: 4911, Electric services

NAIC Codes: 221113, Nuclear Electric Power Generation

Note: This report entitled "General Information" contains a summary of facility-level information contained in LDEQ's TEMPO database for this facility and is not considered a part of the permit. Please review the Information contained In this document for accuracy and completeness. If any changes are required, or If you have questions regarding this document, please email the Permit Support Services Division at facupdate@la.gov.

Renewal Application Permit

Inventories Al No. 2889

Entergy Operations Inc

River Bend Station Activity Number: PER20220001 Permit Number: LA0042731

Subject Item Inventory:

TEMPOID Outfall Descrl otlon EQT32 Cooling Water Intake Cooling Water Intake Requirements Structure RLP2 Outfall 001 the continuous discharge of cooling tower blowdown ; previously monitored effluent from Internal Outfalls 101, 201, 301, 401, 501, and 601 ; and previousl y monitored hydrostatic test wastewater from Internal Outfall 007 RLP3 Internal Outfall 101 the intermittent discharge of low level radioactive low volume wastewater from the liquid radwaste wastewater system (LWS); maintenance wastewaters; and previously monitored hydrostatic test wastewater from Internal Outfall 007. During maintenance activities, Internal Outfall 101 ma y be dischar a ed to Outfall 001 via the coolin a tower flume rather than the common dischar ae header.

RLP4 Internal Outfall 201 the intermitt e nt discharge of treated sanitary wastewater, low volume wastewaters, maintenance wastewaters, and previously monitored hydrostatic test waste wa ter from Internal Outfall 007. During maintenance activities on the common discharge header, previously mon itored effluent from Outfall 201 may be routed to Outfall 002.

RLP 5 Internal Outfall 301 the intermitt ent discharge of mobile metal (chemical and non -chemical) cleaning wastewater generated from cleaning processes of internal com oonents of olant ea ui oment RLP 6 Internal Outfall 401 the intermitt e nt discharge of low volume wastewater treatment systems and previously monitored hydrostatic test wastewater from Internal Outfall 007 to Final Outf all 001 via the common header. During maintenance activities, Internal Outfall 401 may be discharged via the cooling tower flume rather than the common discharge header. Also, during maintenance activities, reverse osmosis reject from the makeup water polishing system may be dischar a ed via Internal Outfall 401 rather than Outfall 003.

RLP7 Internal Outfall 501 the intermittent discharge of low volume wastewaters, including but not limited to, wastewaters from the mobile standby service water reverse osmosis (RO) filtration unit, standby cooling tower reject, and/or other low volume wastewaters as defined in 40 CFR 423; and previously monitored wastewater from Internal Outfall 007 RLP 8 Internal Outfall 601 the intermittent discharge of low volume wastewater, includ ing but not limited to, wastewaters from the filter backwash from service water polishing and feed-and -bleed from the service water system and other low volume wastewaters as defined in 40 CFR 423; and previously monitored hydrostatic test wastewater from Internal Outfall 007 RLP9 Outfall 002 intermittent discharge of stormwater runoff ; air conditioning condensate ; potable water ; clar ified river water; well water ; maintenance wastewaters ; low volume wast ewaters as defined in 40 CFR 423, including but not limited to, bearing cooling water; and previously monitored from Internal Outfall 007.

During perio ds of maintenance activities on the common discharge header, previously monitored treated wastewater from Internal Outfall 201 may be dischar a ed throu a h Outfall 002.

RLP 11 Outfall 003 the intermitte nt discharge of stormwater runoff ; maintenance wastewaters including but not limited to flushing of piping systems and vessels (includ ing Fire Protectio n Water Supply System and Automatic Sprinkler System); low volume wastewaters ; air conditioning condensate; previously monitored hydrostatic te st wastewater from Internal Outfall 007 ; and de minimis auantities of coolin a tower drift/mist RLP 12 Outfall 004 intermittent di scharge of stormwater runoff from the office areas, warehouse areas, materials storage areas, and equipment/vehicle ma intenance areas; mainte nance wastewaters, including but not limited to, flushing of piping systems and vessels (Fire Protection Water Supply System and Automatic Sp rinkler System, etc.); air conditioning condensate ; potable water; previously monitored hydrostatic test wastewater from Internal Outfall 007; & previo usl y monitored effluent from Internal Outfall 104 RLP 13 Internal Outfall 104 the intermitte nt dischar ae of exterior vehicle washwater RLP 14 Outfall 005 the intermitte nt discharge of stormwater runoff from the cooling tower yard, air conditioning condensate, previously monitored hydrostatic test wastewater from Internal Outfall 007, and de minimis auantities of coolin g tower drift/mist RLP 15 Outfall 006 the intermitte nt dischar ge of clarifier underflow RLP 16 Internal Outfall 007 the intermitte nt dischar ge of hydrostatic test wastewater FAC 1 LA0042731 Water Aaency Interest

1/23/2024 Page 1 of 1 P310_WATER_PERMIT_SI_INVENTORY PERMIT No.: LA0042731 AI No.: 2889

OFFICE OF ENVIRONMENTAL SERVICES Water Discharge Permit

Pursuant to the Clean Water Act, as amended (33 U.S.C. 1251 et seg.), and the Louisiana Environmental Quality Act, as amended (La. R. S. 30:2001 et seg.), rules and regulations effective or promulgated under the authority of said Acts, and in reliance on statements and representations heretofore made in the application, a Louisiana Pollutant Discharge Elimination System permit is issued authorizing

Entergy Operations Inc.

River Bend Station 5485 US Highway 61 St. Francisville, LA 70775

Type Facility: steam electric generating facility

Location: 5485 US Highway 61, St. Francisville West Feliciana Parish

Receiving Waters: Mississippi River (Outfalls 001 and 006)

Grant's Bayou thence into Alligator Bayou thence into Thompson Creek (Outfall 002, 003, 004, and 005) (Subsegment 07020 I)

to discharge in accordance with effluent limitations and monitoring requirements, narrative requirements, other conditions, and standard conditions attached hereto.

This permit shall become effective on ~ \\ l l(IJ 2.-Y

\\.

This permit and the authorization to discharge shall expire five (5) years from the effective date of the permit.

Secretary

GALVEZ BUILDING* 602 N FIFTH STREET* P.O. BOX 43/3

BATON ROUGE. LA 70821-43/3 * (225) 219-3181 PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731

EQT 32: Cooling Water Intake Structure - Cooling Water Intake Requirements

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below:

DischarQe Limitations Monitorino Reauirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months Average Maximum Units Minimum AveraQe Maximum Units Flow, in conduit or through 50050 Report Report MGD monthly estimate All Year treatment plant - Intake MO AVG DAILYMX

SUBMITTAL/ACTION REQUIREMENTS

S-1 LAC 33 :IX.2701.L.4 Submit Monthly Discharge Monitoring Report (DMR): Due monthly, by the 15th of the month. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A and B no later than the 15th day of the month following each reporting period.

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for the intake structure. If you have a No Withdrawal Event at the intake structure during the monitoring period, use a No Data Discharge Indicator (NODI) Code of "7" for electronic DMRs or note in the comments section of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) si gned and certified as required by LAC 33 :IX.2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33:IX.2701 Clean Water Act 316(b) Cooling Water Intake Structure (CWIS) Requirements: Annual certification statement and report - See Other Conditions, Paragraph T-Record Keeping and Reporting. The annual report shall be submitted one year from the date of the previous annual reports. See Other Conditions, Paragraph T-Record Keeping and Reporting for additional submittal instructions.

N-3 LAC 33 :IX.2701 See Other Conditions, Paragraph T-Clean Water Act 316(b) Cooling Water Intake Structure (CWIS) Requirements for additional requirements.

N-4 40 CFR 125.97 Intake Flow Monitoring - The permittee shall monitor the actual intake flows daily. The monitoring must be representative of normal operations, and must include measuring cooling water withdrawals, make-up water, and blowdown volume (40 CFR 125.94(c)(1 )). The average monthly and maximum daily intake flows shall be reported with the monthly DMR and in the annual report. The average monthly and maximum daily make-up water flows and blowdown flows shall be reported in the comments section of the DMR and in the annual report.

Page 1 of 25 P401 PM REO PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 NARRATIVE REQUIREMENTS

N-5 LAC 33 :IX.2701 Flow Monitoring "Daily" Sample Type - Alternative Procedure

In the event of flow monitoring device failure, cycles of concentration shall be monitored daily. The permittee will operate cooling towers with a minimum of 3 cycles of concentration. This alternative procedure is allowed because 40 CFR 125.94 (c) (1) states that cycles of concentration for cooling towers may be monitored in lieu of daily intake flow monitoring.

Monitoring results shall be submitted to LDEQ with the monthly DMR and in the annual report. When reporting DMRs electronically and monitoring is not required during the monitoring period, use a no data indicator (NODI) code of 9 for conditional/not required. In the event of a flow monitoring device failure, the permittee shall provide the following information in the comment section of the DMR:

i. The date and time of the flow monitoring device failure.

ii. The date and time that the flow monitoring device is restored.

PaQe 2 of 25 P.11.f\\1 PU PC/"\\

PERMIT REQUJREMENJS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 2: Outfall 001 - the continuous discharge of cooling tower blowdown; previously monitored effluent from Internal Outfalls 101, 201, 301, 401, 501, and 601; and previously monitored hydrostatic test wastewater from Internal Outfall 007

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below:

Discharoe Limitations Monitorino Reauirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months Averaoe Maximum Units Minimum Averaoe Maximum Units Flow, in conduit or through 50050 Report Report MGD continuously Recorder All Year treatment plant MO AVG DAILY MX Chlorine, free available 50064 0.2 0.5 mg/L weekly grab sampling All Year MO AVG DAILY MX Chromium, Total (as Cr) 01034 0.2 0.2 mg/L annually grab sampling All Year MO AVG DAILY MX pH 00400 6.0 9.0 SU weekly grab sampling All Year INST MIN INST MAX Water temperature, degrees 00011 105 110 DEG.F continuously Recorder All Year F MO AVG INST MAX Zinc, total (as Zn) 01092 1.0 1.0 mg/L weekly grab sampling All Year MO AVG DAILYMX Biomonitoring, Coefficient of TQM3D Report percent annually 24-hr composite All Year Variation, 48-Hour Acute, MAXIMUM Daohnia oulex Biomonitoring, Coefficient of TQM6C Report percent annually 24-hr composite All Year Variation, 48-Hour Acute, MAXIMUM Pimephales oromelas Biomonitoring, Low Flow TEM3D Report Report p=0 f=1 annually 24-hr composite All Year Pass/Fail Static Renewal, 48HR MIN MOAVMN 48-Hour Acute, Daphnia IPUlex Biomonitoring, Low Flow TEM6C Report Report p=0 f=1 annually 24-hr composite All Year Pass/Fail Static Renewal, 48HR MIN MOAVMN 48-Hour Acute, Pimephales loromelas Biomonitoring, NOEC TOM3D Report Report percent annually 24-hr composite All Year Lethality Static Renewal, 48-48HR MIN MOAVMN Hour Acute, Daohnia oulex Biomonitoring, NOEC TOM6C Report Report percent annually 24-hr composite All Year Lethality Static Renewal, 48-48HR MIN MOAVMN Hour Acute, Pimephales promelas Biomonitoring, Whole DA2241 Report Report p=0 f=1 annually 24-hr composite All Year Effluent Toxicity, Retest #1 5 48HR MIN MOAVMN lethal - Daphnia pulex

Page 3 of 25 p,1n1 cu o~n PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and mon itored by the permittee as specified below:

Discharae Limitations Monitorina Reauirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months Averaae Maximum Units Minimum Averaae Maximum Units Biomonitoring, Whole Pl22415 Report Report p=0 f=1 annually 24-hr composite All Year Effluent Toxicity, Retest #1 48HR MIN MOAVMN lethal - Pimephales promelas Biomonitoring, Whole DA2241 Report Report p=0 f=1 annually 24-hr composite All Year Effluent Toxicity, Retest #2 6 48HR MIN MOAVMN lethal - Daphnia pulex Biomonitoring, Whole Pl22416 Report Report p=0 f=1 annually 24-hr composite All Year Effluent Toxicity, Retest #2 48HR MIN MOAVMN lethal - Pimephales promelas Biomonitoring, Whole DA5144 Report Report p=0 f=1 annually 24-hr composite All Year Effluent Toxicity, Retest #3 3 48HR MIN MOAVMN lethal - Daohnia oulex Biomonitoring, Whole Pl51443 Report Report p=0 f=1 annually 24-hr composite All Year Effluent Toxicity, Retest #3 48HR MIN MOAVMN lethal - Pimephales promelas

SUBMITTAL/ACTION REQUIREMENTS

S-1 LAC 33 :IX.2701.L.4 Submit Annual Discharge Monitor ing Report (DMR) : Due annually, by the 15th of January. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A and B no later than January 15th, for monitoring in the months of January through December.

S-2 LAC 33 :IX.2701.L.4 Submit Monthly Discharge Monitor ing Report (DMR) : Due monthly, by the 15th of the month. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A and B no later than the 15th day of the month following each reporting period.

NARRATIVE REQUIREMENTS

N-1 LAC 33 :IX. 1121 Report any Whole Effluent Toxicity test which results in an NOEC value less than the critical dilution for lethal parameters on a Discharge Monitoring Report (DMR) and submit by the 15th of the month following the Monitoring Period in which the test failure occurred.

N-2 LAC 33:IX.2701.J.4 Monitored at the exposed vacuum-break chamber of the buried 30-inch diameter discharge pipeline, prior to discharge to the Mississippi River. As an alternative, the permittee may report temperature measurements based on the balance of plant computer points, and flow may be measured from the Auxiliary Control Room flow recorder measurements.

N-3 LAC 33 :IX.1113.B There shall be no discharge of floating or settleable solids or visible foam in other than trace amounts, nor of free oil or other oily materials, nor of toxic materials in quantities such as to cause toxicity to aquatic organisms.

Page 4 of 25 P401 PM RFO PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 NARRATIVE REQUIREMENTS

N-4 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33:IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-5 LAC 33 :IX.2701.J.2 Chlorine, free available (FAC): Samples shall be representative of any periodic episodes of chlorination or chlorine compounds usage discharged on an intermittent basis. See Other Conditions, Paragraph O of the permit. Discharge Monitoring Reports (DMRs) shall be submitted on a monthly basis. If none of the above conditions occur during the month, than FAC requirements may be suspended for that month. However, a DMR must be submitted.

Use a no data indicator (NODI) code of 9 for conditional/not required. Further explanation can be provided in the notes section of the DMR.

N-6 LAC 33:IX.2701 Water temperature, degrees F: See Other Conditions, Paragraph L.

N-7 LAC 33 :IX.2701 Biomonitoring shall be conducted during periods of chlorination, biocide(s) usage or other potentially toxic substances being discharged. However, if no biofouling agent or chlorine is used during the monitoring period, the permittee must still conduct the annual testing.

N-8 LAC 33 :IX.2701 Biomonitoring : See Other Conditions, Paragraph U for additional biomonitoring requirements.

Page 5 of 25 D;ln1 DU DC:A PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 3: Internal Outfall 101 - the intermittent discharge of low level radioactive low volume wastewater from the liquid radwaste wastewater system (LWS); maintenance wastewaters; and previously monitored hydrostatic test wastewater from Internal Outfall 007. During maintenance activities, Internal Outfall 101 may be discharged to Outfall 001 via the cooling tower flume rather than the common discharge header.

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below :

Discharge Limitations Monitorina Re auirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months Average Maximum Units Minimum Avera ge Maximum Units Flow, in conduit or through 50050 Report Report MGD monthly estimate All Year treatment plant MO AVG DAILYMX Oil and grease 00556 15 20 mg/L monthly grab sampling All Year MO AVG DAILY MX TSS (Total Su spended 00530 30 100 mg/L monthly grab sampling All Year Solids ) MO AVG DAILYMX

SUBMITTAL/ ACTI ON REQUIREMENTS

S-1 LAC 33:IX.2701.L.4 Submit Monthly Discharge Monitoring Report (DMR) : Due monthly, by the 15th of the month. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A & B no later than no later than the 15th day of the month following each reporting period.

NARRATIVE REQUIREMENTS

N-1 LAC 33 :IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33 :IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33 :IX.2701.J.4 Monitored at the point of discharge from the Radwaste building, prior to mixing with other wastestreams and the waters of Final Outfall 001.

N-3 LAC 33 :IX.2701 The perm ittee shall monitor all low volume wastewater sources that contribute to Outfall 101 from various locations on the property monthly when discharging.

N-4 LAC 33 :IX.2701 Low volume wastewater includes equipment and building floor drain sumps, equipment washing, pe rsonnel decontamination, laboratory drains, filter press effluent, RO unit wastewater, and other low volume wastewater sources as defined in 40 CFR 423.

N-5 LAC 33 :IX.2701 When discharging.

Page 6 of25 c,1n1 OU OC:f"\\

PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 4: Internal Outfall 201 - the Intermittent discharge of treated sanitary wastewater, low volume wastewaters, maintenance wastewaters, and previously monitored hydrostatic test wastewater from Internal Outfall 007. During maintenance activities on the common discharge header, previously monitored effluent from Outfall 201 may be routed to Outfall 002.

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below :

Discharge Limitations Monitorina Reauirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months Average Maximum Units Minimum Average Maximum Units Flow, in conduit or through 50050 Report Report MGD weekly estimate All Year treatment plant MO AVG DAILYMX BOD, 5-day (20 degrees C) 00310 30 45 mg/L quarterly grab sampling All Year MO AVG DAILYMX Fecal coliform, general 74055 200 400 #/100ML quarterly grab sampling All Year MOAVGEO DAILYMX Oil and grease 00556 15 20 mg/L weekly grab sampling All Year MO AVG DAILY MX TSS (Total Suspended 00530 30 45 mg/L weekly grab sampling All Year Solids) MO AVG DAILYMX

SUBMITTAL/ACTION REQUIREMENTS

S-1 LAC 33:IX.2701.L.4 Submit Monthly Discharge Monitoring Report {DMR) : Due monthly, by the 15th of the month. Electronically submit {unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A & B no later than no later than the 15th day of the month following each reporting period.

S-2 LAC 33:IX.2701.L.4 Submit Quarterly Discharge Monitoring Report {DMR) : Due quarterly, by the 15th of January, April, July, and October. Electronically submit {unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33: 1.2101.A & B no later than April 15th for monitoring in the months of January, February and March, no later than July 15th for monitoring in the months of April, May, and June, no later than October 15th for monitoring in the months of July, August, and September, and no later than January 15th for monitoring in the months of October, November, and December.

NARRATIVE REQUIREMENTS

N-1 LAC 33 :IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall{s) during the reporting period, use a No Data Discharge Indicator {NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33:IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33 :IX.2701.J.4 Monitored at the point of discharge from the sewage treatment facility, prior to mixing with the waters of Final Outfall 001 or Final Outfall 002.

Page 7 of 25 P401 PM REQ PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 NARRATIVE REQUIREMENTS

N-3 LAC 33:IX.2701 Future water quality studies may indicate potential toxicity from the presence of residual chlorine in the treatment facility's effluent. Therefore, a future Total Residual Chlorine Limitation may be required if chlorine is used as a method of disinfection. In many cases, this becomes a NO MEASUREABLE Total Residual Chlorine Limitation. If such a limitation is imposed, provide for dechlorination of the effluent prior to discharge.

N-4 LAC 33:IX.2701.L Fecal Coliform, general: The monthly average for the bacteria indicator is the geometric mean of the values for all effluent samples collected during a calendar month.

N-5 LAC 33:IX.2701 During maintenance activities, sanitary wastewater may be combined with previously monitored hydrostatic test wastewater, wastewater from floor drains of the control building, and the diesel generator oil/water separator (and other low volume wastewaters as defined in 40 CFR 423), and maintenance wastewaters.

N-6 LAC 33:IX.2701 When discharging.

Page 8 of 25 P.4n1 PU Qi::n PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No. : PER20220001 Permit No.: LA0042731 RLP 5: Internal Outfall 301

the Intermittent discharge of mobile metal (chemical and non-chemical) cleaning wastewater generated from cleaning processes of Internal components of plant equipment

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below:

DischarQe Limitations Monitorina Reauirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months AveraAe Maximum Units Minimum AveraQe Maximum Units Flow, in conduit or through 50050 Report Report MGD weekly estimate All Year treatment olant MOAVG DAILYMX Copper, Total (as Cu) 01042 1.0 1.0 mg/L weekly grab sampling All Year MO AVG DAILY MX Iron, Total (As Fe) 01045 1.0 1.0 mg/L weekly grab sampling All Year MO AVG DAILYMX Oil and grease 00556 15 20 mg/L weekly grab sampling All Year MO AVG DAILY MX TSS (Total Suspended 00530 30 100 mg/L weekly grab sampling All Year Solids) MO AVG DAILY MX

SUBMITTAUACTION REQUIREMENTS

S-1 LAC 33:IX.2701.L.4 Submit Monthly Discharge Monitoring Report (DMR) : Due monthly, by the 15th of the month. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:I.2101.A & B no later than no later than the 15th day of the month following each reporting period.

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33 :IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33:IX.2701.J.4 Monitored at the point of discharge of metal cleaning wastewaters, prior to mixing with other waters.

N-3 LAC 33:IX.2701 When discharging.

Page 9 of25 P401 PM REO PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 6: Internal Outfall 401

the intermittent discharge of low volume wastewater treatment systems and previously monitored hydrostatic test wastewater from Internal Outfall 007 to Final Outfall 001 via the common header. During maintenance activities, Internal Outfall 401 may be discharged via the cooling tower flume rather than the common discharge header. Also, during maintenance activities, reverse osmosis reject from the makeup water polishing system may be discharged via Internal Outfall 401 rather than Outfall 003.

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as spec ified below :

Discharoe Limitations Monitorin o Re ouirements Paramet er Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months AveraQe Maximum Units Minimum AveraQe Maximum Units Flow, in condu it or through 50050 Report Report MGD monthly estimate All Year treatment plan t MO AVG DAILYMX Oil and grease 00556 15 20 mg/L monthly grab sampling All Year MO AVG DAILYMX TSS (Total Suspended 00530 30 100 mg/L monthly grab sampling All Year Solids } MO AVG DAILY MX

SUBMITTAL/AC TI ON REQUIREMENTS

S-1 LAC 33:IX.2 701.L.4 Submit Monthly Discharge Monitoring Report (DMR) : Due monthly, by the 15th of the month. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33 :1.2101.A & B no later than no later than the 15th day of the month following each reporting period.

NARRATIVE REQUIREMENTS

N-1 LAC 33 :IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33 :IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33 :IX.2701.J.4 Monitored at the makeup water pump house off one of two discharge pumps, after filtration, prior to mixing with other waters.

N-3 LAC 33 :IX.2701 The low volume waste management systems receive effluent from ion exchange resin backwash and regeneration, auxiliary boiler blowdown, floor washdown, equipment washing, personnel decontamination, laboratory drains, filter press, and maintenance wastewaters and other low volume wastewater sources as defined in 40 CFR 423.

N-4 LAC 33:IX.2701 When discharging.

Page 10 of 25 P401 PM REO PERMIJ REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 7: Internal Outfall 501 - the Intermittent discharge of low volume wastewaters, including but not limited to, wastewaters from the mobile standby service water reverse osmosis (RO) filtration unit, standby cooling tower reject, and/or other low volume wastewaters as defined in 40 CFR 423; and previously monitored wastewater from Internal Outfall 007

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below:

Discharae Limitations Monitorina Reauirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months Averaae Maximum Units Minimum Averaae Maximum Units Flow, in conduit or through 50050 Report Report MGD monthly estimate All Year treatment olant MO AVG DAILYMX Oil and grease 00556 15 20 mg/L monthly grab sampling All Year MO AVG DAILYMX TSS (Total Suspended 00530 30 100 mg/L monthly grab sampling All Year Solids) MO AVG DAILYMX

SUBMITTAL/ACTION REQUIREMENTS

S-1 LAC 33:IX.2701.L.4 Submit Monthly Discharge Monitoring Report (DMR) : Due monthly, by the 15th of the month. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A & B no later than no later than the 15th day of the month following each reporting period.

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33 :IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33:IX.2701.J.4 Monitored at the northwest end of the flume, at the point of discharge of low volume wastewater, prior to mixing with other waters.

N-3 LAC 33:IX.2701 When discharging.

Page 11 of 25 P401 PM RFO PERM!J REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No. : PER20220001 Permit No.: LA0042731 RLP 8 : Internal Outfall 601

the Intermittent discharge of low volume wastewater, including but not limited to, wastewaters from the filter backwash from service water polishing and feed-and-bleed from the service water system and other low volume wastewaters as defined in 40 CFR 423; and previously monitored hydrostatic test wastewater from Internal Outfall 007

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below :

Discharae Limitations Monitorin g ReQuirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Load ing Loading Loading Cone. Cone. Cone. Cone. Months Avera ae Maximum Units Minimum Avera ae Maximum Units Flow, in conduit or through 50050 Report Report MGD monthly estimate All Year treatment olant MO AVG DAILYMX Oil and grease 00556 15 20 mg/L monthly grab sampling All Year MO AVG DAILY MX TSS (Total Su spe nded 00530 30 100 mg/L monthly grab sampling All Year Solids ) MO AVG DAILY MX

SUBMITTAL/ AC TION REQUIREMENTS

S-1 LAC 33:I X.2701.L.4 Subm it Monthly Discharge Monitoring Report (DMR) : Due monthly, by the 15th of the month. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A & B no later than no later than the 15th day of the month following each reporting period.

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting e lectronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33:IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33:IX.2701.J.4 Monitored at the southeast end of the flume, at the point of discharge of low volume wastewater, prior to mixing with other waters.

N-3 LAC 33:IX.2701 When discharging.

Page 12 of 25 P401 PM RFO PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 9: Outfall 002 - intermittent discharge of stormwater runoff; air conditioning condensate; potable water; clarified river water; well water; maintenance wastewaters; low volume wastewaters as defined in 40 CFR 423, including but not limited to, bearing cooling water; and previously monitored from Internal Outfall 007. During periods of maintenance activities on the common discharge header, previously monitored treated wastewater from Internal Outfall 201 may be discharged through Outfall 002.

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below:

DischarQe Limitations Monitorin Q Re q uirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months AveraQe Maximum Units Minimum Avera Qe Maximum Units Flow, in conduit or through 50050 Report Report MGD quarterly estimate All Year treatment plant MO AVG DAILYMX Flow, in conduit or through 50050 Report Report MGD monthly estimate All Year treatment olant MO AVG DAILYMX Carbon, total organic 00680 50 mg/L quarterly grab sampling All Year DAILYMX Oil and grease 00556 15 mg/L quarterly grab sampling All Year DAILY MX Oil and grease 00556 15 mg/L monthly grab sampling All Year DAILY MX pH 00400 6.0 9.0 SU quarterly grab sampling All Year INST MIN INST MAX pH 00400 6.0 9.0 SU monthly grab sampling All Year INST MIN INST MAX TSS (Total Susp en ded 00530 100 mg/L monthly grab sampling All Year Solids ) DAILY MX

SUBMITT AU ACTION REQUIREMENTS

S-1 LAC 33:IX.2701.L.4 Submit Quarterly Discharge Monitoring Report (DMR) : Due quarterly, by the 15th of January, April, July, and October. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33 :1.2101.A and B no later than April 15th for monitoring in the months of January, February and March, no later than July 15th for monitoring in the months of April, May, and June, no later than October 15th for monitoring in the months of July, August, and September, and no later than January 15th for monitoring in the months of October, November, and December.

S-2 LAC 33:IX.2701.L.4 Submit Monthly Discharge Monitoring Report (DMR) : Due monthly, by the 15th of the month. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A & B no later than no later than the 15th day of the month following each reporting period.

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33:IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

Page 13 of 25 P401 PM REQ PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 NARRATIVE REQUIREMENTS

N-2 LAC 33 :IX.2701.J.4 Monitored at the point of discharge from the plant drainage ditch system where the stormwater runoff from the sewage treatment plant area converges with that from the industrial materials storage area and the Low Level Waste Storage Building, prior to mixing with other waters.

N-3 LAC 33:IX.1113.B There shall be no discharge of floating or settleable solids or visible foam in other than trace amounts, nor of free oil or other oily materials, nor of toxic materials in quantities such as to cause toxicity to aquatic organisms.

N-4 LAC 33:IX.2701 There are two operational scenarios for Outfall 002: (1) discharges which do not include low volume wastewaters; and (2) discharges which include low volume wastewaters. When discharging low volume wastewaters, additional effluent limitations and monitoring requirements apply.

N-5 LAC 33 :IX.2701 Discharge Monitoring Reports (DMRs) must be submitted for BOTH Outfall 002 operational scenarios: (1) discharges which do not include low volume wastewaters (002Q DMR); and (2) discharges which include low volume wastewaters (002A DMR).

N-6 LAC 33 :IX.2701 Discharges which do not include low volume wastewaters (Stormwater - 002Q DMR): Flow, Oil & Grease, TOC, and pH must be monitored quarterly and the results shall be reported on the 002Q DMR.

N-7 LAC 33:IX.2701 If no low volume wastewater discharges occur during the month: A no data indicator (NODI) code of 9 for conditional/not required should be used for the monthly values on the 002A DMR for Flow, Oil & Grease, TSS, and pH. A notation shall also be made on the 002A DMR stating that no discharges of low volume wastewaters occurred during the month.

N-8 LAC 33:IX.2701 If low volume wastewater discharges occur : Flow, Oil & Grease, TSS, and pH must be monitored monthly and the results shall be reported on the 002A DMR. Sample results shall be representative of low volume wastewaters discharged.

N-9 LAC 33 :IX.2701 *Stormwater runoff is generated from the industrial materials storage area, the low-level waste storage building area, the clarifier area, and the sewage treatment plant area.

N-10 LAC 33 :IX.2701 **Ma intenance wastewaters include, but are not lim ited to, safety shower water and flushing of pipe systems and vessels.

N-11 LAC 33 :IX.2701 When discharging.

Page 14 of25 P401 PM ~I=(")

PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 11: Outfall 003 - the intermittent discharge of stormwater runoff; maintenance wastewaters including but not limited to flushing of piping systems and vessels (Including Fire Protection Water Supply System and Automatic Sprinkler System); low volume wastewaters; air conditioning condensate; previously monitored hydrostatic test wastewater from Internal Outfall 007; and de minimis quantities of cooling tower drift/mist

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below :

Discharae Limitations Monitorina Reauirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months Average Maximum Units Minimum Averaae Maximum Units Flow, in conduit or through 50050 Report Report MGD quarterly estimate All Year treatment plant MO AVG DAILYMX Flow, in conduit or through 50050 Report Report MGD monthly esti mate All Year treatment plant MO AVG DAILY MX Carbon, total organic 00680 50 mg/L quarterly grab sampling All Year DAILYMX Copper, Total (as Cu) 01042 Report Report ug/L monthly grab sampling All Year MO AVG DAILYMX Oil and grease 00556 15 mg/L quarterly grab sampling All Year DAILYMX Oil and grease 00556 15 mg/L monthly grab sampling All Year DAILYMX pH 00400 6.0 9.0 SU quarterly grab sampling All Year INST MIN INST MAX pH 00400 6.0 9.0 SU monthly grab sampling All Year INST MIN INST MAX TSS (Total Suspended 00530 100 mg/L monthly grab sampling All Year Solids} DAILY MX Zinc, total (as Zn) 01092 Report Report ug/L monthly grab sampling All Year MO AVG DAILYMX

SUBMITT Al/ACTION REQUIREMENTS

S-1 LAC 33 :IX.2701.L.4 Submit Quarterly Discharge Monitoring Report (DMR) : Due quarterly, by the 15th of January, April, July, and October. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33 :1.2101.A and B no later than April 15th for monitoring in the months of January, February and March, no later than July 15th for monitoring in the months of April, May, and June, no later than October 15th for monitoring in the months of July, August, and September, and no later than January 15th for monitoring in the months of October, November, and December.

S-2 LAC 33:IX.2701.L.4 Subm it Monthly Discharge Monitoring Report (DMR) : Due monthly, by the 15th of the month. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33 :1.2101.A & B no later than no later than the 15th day of the month following each reporting period.

Page 15 of 25 P401 PM REQ PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No. : PER20220001 Permit No.: LA0042731 NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33 :IX.

2503.B, and all other reports (one set of originals} required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33 :IX.2701.J.4 Monitored at the point of discharge from the plant drainage ditch system along the East Creek, prior to mixing with other waters.

N-3 LAC 33 :IX.1113.B There shall be no discharge of floating or settleable solids or visible foam in other than trace amounts, nor of free oil or other oily materials, nor of toxic materials in quantities such as to cause toxicity to aquatic organisms.

N-4 LAC 33:IX.2701 There are two operational scenarios for Outfall 003: (1) discharges which do not include low volume wastewaters; and (2) discharges which include low volume wastewaters. When discharging low volume wastewaters, additional effluent limitations and monitoring requirements apply.

N-5 LAC 33:IX.2701 Discharge Monitoring Reports (DMRs) must be submitted for BOTH Outfall 003 operational scenarios: (1) discharges which do not include low volume wastewaters (0030 DMR); and (2) discharges which include low volume wastewaters (003A DMR).

N-6 LAC 33 :IX.2701 Discharges which do not include low volume wastewaters (Stormwater - 0030 DMR) : Flow, Oil & Grease, TOC, and pH must be monitored quarterly and the results shall be reported on the 0030 DMR.

N-7 LAC 33:IX.2701 If no low volume wastewater discharges occur during the month: A no data indicator (NODI} code of 9 for conditional/not required should be used for the monthly values on the 003A DMR for Flow, Oil & Grease, TSS, and pH. A notation shall also be made on the 003A DMR stating that no discharges of low volume wastewaters occurred during the month.

N-8 LAC 33 :IX.2701 If low volume wastewater discharges occur : Flow, Oil & Grease, TSS, and pH must be monitored monthly and the results shall be reported on the 003A DMR. Sample results shall be representative of low volume wastewaters discharged.

N-9 LAC 33:IX.2701 Stormwater runoff is generated from the reactor building, turbine building, services building, clarifiers, cooling tower area, main transformer yard and auxiliary transformer yards.

N-10 LAC 33:IX.2701 Low volume wastewaters include, but are not limited to, reverse osmosis reject water from the standby service water polishing system; effluent from floor drains within power plant buildings (domestic potable water, well water, reject mobile reverse osmosis and fire suppression water treated in the fire pump house oil/water separator); air compressor condensate; and reverse osmosis reject water from the makeup water polishing system.

N-11 LAC 33:IX.2701 When discharging.

Page 16 of 25 P401 PM REO PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No. : PER20220001 Permit No.: LA0042731 RLP 12: Outfall 004 - Intermittent discharge of stormwater runoff from the office areas, warehouse areas, materials storage areas, and equipment/vehicle maintenance areas; maintenance wastewaters, Including but not limited to, flushing of piping systems and vessels (Fire Protection Water Supply System and Automatic Sprinkler System, etc.);

air conditioning condensate; potable water; previously monitored hydrostatic test wastewater from Internal Outfall 007; & previously monitored effluent from Internal Outfall 104

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below :

DischarQe Limitations Mon itorin!l ReQuirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Load ing Loading Loading Cone. Cone. Cone. Cone. Months Average Maximum Units Minimum AveraQe Maximum Units Flow, in conduit or through 50050 Report Report MGD quarterly estimate All Year treatment plant MO AVG DAILYMX Carbon, total organic 00680 50 mg/L quarterly grab sampling All Year DAILY MX Oil and grease 00556 15 mg/L quarterly grab sampling All Year DAILYMX pH 00400 6.0 9.0 SU quarterly grab sampling All Year INST MIN INST MAX

SUBMITTAL/ACTION REQUIREMENTS

S-1 LAC 33:IX.2701.L.4 Submit Quarterly Discharge Monitoring Report (DMR): Due quarterly, by the 15th of January, April, July, and October. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A and B no later than April 15th for monitoring in the months of January, February and March, no later than July 15th for monitoring in the months of April, May, and June, no later than October 15th for monitoring in the months of July, August, and September, and no later than January 15th for monitoring in the months of October, November, and December.

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electron ically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33 :IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821 -4312.

N-2 LAC 33:IX.2701.J.4 Monitored at the point of discharge from the plant drainage ditch system along the West Creek, prior to mixing with other waters.

N-3 LAC 33:IX.1113.B There shall be no discharge of floating or settleable solids or visible foam in other than trace amounts, nor of free oil or other oily materials, nor of toxic materials in quantities such as to cause toxicity to aquatic organisms.

N-4 LAC 33:IX.2701 When discharging.

Page 17 of 25 P401 _ PM _ REQ PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 13: Internal Outfall 104 - the Intermittent discharge of exterior vehicle washwater

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below:

Discharae Limitations Monitorin a Re a uirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading loading Loading Cone. Cone. Cone. Cone. Months Avera ae Maximum Units Minimum Avera ae Maximum Units Flow, in conduit or through 50050 Report Report MGD quarterly estimate All Year treatment plant MO AVG DAILYMX COD (high level) 00340 300 mg/l quarterly grab sampling All Year DAILY MX Oil and grease 00556 15 mg/L quarterly grab sampling All Year DAILY MX pH 00400 6.0 9.0 SU quarterly grab sampling All Year INST MIN INST MAX TSS (Total Suspended 00530 45 mg/L quarterly grab sampling All Year Solids ) DAILY MX

SUBMITTAL/ACTION REQUIREMENTS

S-1 LAC 33:IX.2701.L.4 Submit Quarterly Discharge Monitoring Report (DMR): Due quarterly, by the 15th of January, April, July, and October. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A and B no later than April 15th for monitoring in the months of January, February and March, no later than July 15th for monitoring in the months of April, May, and June, no later than October 15th for monitoring in the months of July, August, and September, and no later than January 15th for monitoring in the months of October, November, and December.

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33:IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compl iance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33:IX.2701.J.4 Monitored at the point of discharge from the vehicle washing area, prior to mixing with other waters.

N-3 LAC 33:IX.2701.J Soaps/Detergents : Monitor by inventory records and calculations quarterly. Retain inventory records (quantity and type), and a Safety Data Sheet (SDS) for each material used for three years. No DMR reporting shall be required.

N-4 LAC 33:IX.2701 When discharging.

Page 18 of 25 P401 _ PM_ REQ PERMIT REQUIREMENTS Agency Interest No. : 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 14: Outfall 005 - the Intermittent discharge of stormwater runoff from the cooling tower yard, air conditioning condensate, previously monitored hydrostatic test wastewater from Internal Outfall 007, and de minimis quantities of cooling tower drift/mist

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below:

Discharge Limitations Monitoring Reauirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months Average Maximum Units Minimum Average Maximum Units Flow, in conduit or through 50050 Report Report MGD quarterly estimate All Year treatment plant MO AVG DAILY MX Carbon, total organic 00680 50 mg/L quarterly grab sampling All Year DAILY MX Oil and grease 00556 15 mg/L quarterly grab sampling All Year DAILY MX pH 00400 6.0 9.0 SU quarterly grab sampling All Year INST MIN INST MAX

SU BM ITT AL/ACTION REQUIREMENTS

S-1 LAC 33:IX.2701.L.4 Submit Quarterly Discharge Monitoring Report (DMR): Due quarterly, by the 15th of January, April, July, and October. Electronically submit (unless DEQ gives written authori zation to submit monitoring results in an alternative format), in accordance with LAC 33 :1.2101.A and B no later than April 15th for monitoring in the months of January, February and March, no later than July 15th for monitoring in the months of April, May, and June, no later than October 15th for monitoring in the months of July, August, and September, and no later than January 15th for monitoring in the months of October,

November, and December.

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electron ic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33 :IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33 :IX.2701.J.4 Monitored at the point of discharge from the stormwater drainage ditch east of the cooling towers and prior to mixing with other waters.

N-3 LAC 33:IX.1113.B There shall be no discharge of floating or settleable solids or visible foam in other than trace amounts, nor of free oil or other oily materials, nor of toxic materials in quantities such as to cause toxicity to aquatic organisms.

N-4 LAC 33:IX.2701 When discharging.

Page 19 of 25 P401 PM REQ PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 15: Outfall 006 - the intermittent discharge of clarifier underflow

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below:

Discharge Limitations Monitorina Reauirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months Average Maximum Units Minimum Average Maximum Units Flow, in conduit or through 50050 Report Report MGD daily estimate All Year treatment plant MO AVG DAILY MX

SUBMITTAL/ACTION REQUIREMENTS

S-1 LAC 33 :IX.2701.L.4 Submit Monthly Discharge Monitoring Report (DMR): Due monthly, by the 15th of the month. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33:1.2101.A and B no later than the 15th day of the month following each reporting period.

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. If you have a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33 :IX.

2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

N-2 LAC 33:IX.2701.J.4 Monitored at the point of discharge of the underflow from the raw river water intake clarifier, prior to mixing with other waters.

N-3 LAC 33:IX.2701 COAGULANTS: The quantity and type of all coagulants (clarifying agents) used in the intake raw water treatment clarification system during the sampling month shall be recorded. Records of the quantity and type of coagulants shall be retained for three (3) years following the Standard Conditions Section C.

3. No DMR reporting shall be required. The permittee shall notify the Office of Environmental Services of any proposed changes to the water treatment chemicals used in the raw water clarifier.

N-4 LAC 33 :IX.2701 When discharging.

Page 20 of 25 P401 _ PM REQ PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 RLP 16: Internal Outfall 007

the Intermittent discharge of hydrostatic test wastewater

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Such discharges shall be limited and monitored by the permittee as specified below:

Discharae Limitations Monitorina Reauirements Parameter Storet Quantity/ Quantity/ Quantity/ Quality/ Quality/ Quality/ Quality/ Frequency Sample Type Which Loading Loading Loading Cone. Cone. Cone. Cone. Months Averaae Maximum Units Minimum Averaae Maximum Units Flow, in conduit or through 50050 Report Report MGD once prior to estimate All Year treatment olant MO AVG DAILYMX discharge Benzene 34030 50 ug/L once prior to grab sampling All Year DAILYMX discharge BTEX 49491 250 ug/L once prior to grab sampling All Year DAILYMX discharQe Carbon, total organic 00680 50 mg/L once prior to grab sampling All Year DAILYMX discharQe Lead, total (as Pb) 01051 50 ug/L once prior to grab sampling All Year DAILYMX discharQe Oil and grease 00556 15 mg/L once prior to grab sampling All Year DAILY MX discharQe pH 00400 6.0 9.0 SU once prior to grab sampling All Year INST MIN INST MAX discharae TSS (Total Suspended 00530 90 mg/L once prior to grab sampling All Year Solids) DAILYMX discharae TSS (Total Suspended 00530 90 mg/L once prior to calculations All Year Sol ids) - NET DAILY MX discharae

SUBMITTAL/ACTION REQUIREMENTS

S-1 LAC 33:IX.2701.L.4 Submit Quarterly Discharge Monitoring Report (DMR): Due quarterly, by the 15th of January, April, July, and October. Electronically submit (unless DEQ gives written authorization to submit monitoring results in an alternative format), in accordance with LAC 33 :1.2101.A and B no later than April 15th for monitoring in the months of January, February and March, no later than July 15th for monitoring in the months of April, May, and June, no later than October 15th for monitoring in the months of July, August, and September, and no later than January 15th for monitoring in the months of October, November, and December.

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2701.L.4 Discharge Monitoring Report Prepare and submit DMRs for each outfall. For facilities with individually permitted hydrostatic test water discharges, summarize the monitoring results for all hydrostatic tests performed during each quarter and report electronically on a Discharge Monitoring Report (DMR) form, or approved substitute, and submit to the Office of Environmental Compliance on a quarterly basis. If there is a No Discharge Event at any of the monitoring outfall(s) during the reporting period, use a No Data Discharge Indicator (NODI) Code of "C" for electronic DMRs or mark an "X" in the No Discharge box located in the upper right corner of the paper DMR. If not submitting electronically, submit duplicate sets of DMRs (one set of originals and one set of copies) signed and certified as required by LAC 33:IX.2503.B, and all other reports (one set of originals) required by this permit, to the Department of Environmental Quality, Office of Environmental Compliance, Permit Compliance Unit, Post Office Box 4312, Baton Rouge, Louisiana 70821-4312.

Page 21 of 25 P401_PM_REQ PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 NARRATIVE REQUIREMENTS

N-2 LAC 33 :IX.2701.J.4 Monitored at the point of discharge from the hydrostatic testing activity, prior to mixing with other wastewaters (may be discharged through Outfalls 001, 002, 003, 004, 005, and/or through Internal Outfalls 101, 201, 401, 501, and 601 ).

N-3 LAC 33:IX.2701.J Flow, TSS, Oil and Grease, and pH: Measure on discharges from all new and existing pipelines, flowlines, vessels, or tanks. Total Organic Carbon (TOC): Measure on discharges from existing pipelines, flowlines, vessels, or tanks which have previously been in service, i.e., those which are not new.

Benzene, Total BTEX, and Total Lead: Measure on discharges from existing pipelines, flowlines, vessels, or tanks which have been used for the storage or transportation of liquid or gaseous petroleum hydrocarbons.

N-4 LAC 33 :IX.2701.J BTEX: Measure BTEX as the sum of benzene, toluene, ethylbenzene, and total xylene (including ortho-, meta-, and para-xylene) as quantified using the methods prescribed by the latest approved 40 CFR 136, Tables A-G.

N-5 LAC 33 :IX.2701.J TSS: Report either a TSS effluent value or a TSS net value on the Discharge Monitoring Report (DMR). If a TSS effluent value is reported, then a no data indicator (NODI) code of 9 for conditional/not required should be used for the TSS net value. If a TSS net value is reported, then a no data indicator (NODI) code of 9 for conditional/not required should be used for the TSS effluent value.

If the effluent is being returned to the same water source from which the intake water was obtained, a TSS net value may be calculated. In these cases,

concurrent sampling of the influent and the effluent is required, and the net value shall not exceed 90 mg/L. If TSS net value is calculated, enter the effluent and intake values in the comment section of the DMR.

N-6 LAC 33 :IX.2701.A For all parameters: Report the highest result from an individual hydrostatic test.

N-7 LAC 33 :IX.2701.A Flow, in conduit or through treatment plant: Report the month with the highest monthly average flow.

N-8 LAC 33 :IX.2701.A Report a no data indicator (NOOI) code of 9 for conditional/not required on the DMR, for parameters that are not required to be sampled during the monitoring period.

N-9 LAC 33 :IX.2701 When discharging.

Page 22 of 25 P401_PM_REQ PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No. : LA0042731 FAC 1: LA0042731

Water Agency Interest

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS N/A

SUBMITTAUACTION REQUIREMENTS N/A

NARRATIVE REQUIREMENTS

N-1 LAC 33:IX.2707.G Report violations of daily maximum limitations for the pollutants listed in Other Conditions orally to the Office of Environmental Compliance within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months from the time you became aware of the violation followed by a written report in five days, under the provisions of Standard Conditions Section D.6.e. (3) of this permit.

N-2 LAC 33:IX.2701 Achieve compliance with the effluent limitations and monitoring requirements specified for discharges in accordance with the following schedule: Effective Date of the permit.

See Other Conditions, Paragraphs E.5, J, K, and T for additional requirements.

N-3 LAC 33:IX.2701 If the flow measurement sample type indicated is specified as "estimate," flow measurements shall not be subject to the accuracy provisions established in this permit. The daily flow value may be estimated using best engineering judgement.

N-4 LAC 33:IX.2701 Obtain prior approval from the Office of Environmental Services for any new proposed discharges at the site.

N-5 LAC 33:IX.2701.J.2 Record all monitoring results per Standard Conditions Section C.4.

N-6 LAC 33 :IX.2701.A SWP3 : Prepare, implement, and maintain a Storm Water Pollution Prevention Plan (SWP3) within six (6) months of the effective date of the final permit for first time permit issuance. Review and update, if necessary, a Storm Water Pollution Prevention Plan (SWP3) within six (6) months of the effective date of the final permit for renewal permit issuance. The SWP3 shall apply to all stormwater discharges from the facility, either through permitted outfalls or through outfalls which are not listed in the permit or as sheetflow.

N-7 LAC 33:IX.2701.A SWP3: Any runoff leaving developed areas of the facility, other than through the permitted outfall(s), exceeding 50 mg/I Carbon, total organic (Storet 00680), 15 mg/I Oil and grease (Storet 00556), or having a pH (Storet 00400) less than 6.0 SU or greater than 9.0 SU shall be a violation of this permit.

Any discharge in excess of these limitations, which is attributable to offsite contamination shall not be considered a violation of this permit.

Page 23 of 25 P401 _ PM REQ PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 NARRATIVE REQUIREMENTS

N-8 LAC 33:IX.2701.A SWP3: Include the following conditions in the SWP3 for the facility:

A) an annual inspection of the facility site to identify areas contributing to the storm water discharge from developed areas of the facility and evaluate whether measures to reduce pollutant loadings identified in the SWP3 are adequate and have been properly implemented in accordance with the terms of the permit or whether additional control measures are needed; B) a prediction of the direction, rate of flow, and total quantity of pollutants which could be discharged from the facility as a result of potential equipment failure (e.g. tank overflow or leakage), natural conditions (e.g. precipitation), or other circumstances which result in significant amounts of pollutants reaching surface waters; and C) an annual report of the inspection of the facility site which should contain, at a minimum, the date and time of inspection, the name of the inspector(s),

conditions found, identification of any incidents of noncompliance, and changes to be made to the SWP3; and D) develop a site map which includes all areas where stormwater may contact potential pollutants or substances which can cause pollution. Any location where reportable quantity leaks or spills have previously occurred are to be documented in the SWP3. The SWP3 shall contain a description of the potential pollutant sources, including, the type and quantity of material present and what action has been taken to assure stormwater precipitation will not directly contact the substances and result in contaminated runoff E) sign the summary report and the following certification in accordance with LAC 33:IX.2503. Attach the summary report to the SWP3 and provide to DEQ upon request: "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualitifed personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations."

F) make available to DEQ, upon request, a copy of the SWP3 and any supporting documentation.

N-9 LAC 33:IX.2701.A SWP3: If applicable, utilize all reasonable methods to minimize any adverse impact on the drainage system including but not limited to: A) maintaining adequate roads and driveway surfaces; B) removing debris and accumulated solids from the drainage system; and C) cleaning up immediately any spill by sweeping, absorbent pads, or other appropriate methods.

N-10 LAC 33:IX.2701.A SWP3: If applicable, clean up and dispose of all spilled product and other spilled wastes immediately according to all applicable regulations, Spill Prevention and Control (SPC) plans or Spill Prevention Control and Countermeasures (SPCC) plans.

N-11 LAC 33:IX.2701.A SWP3: If applicable, use of detergents, emulsifiers, or dispersants to clean up spilled product is prohibited except where necessary to comply with state or federal safety regulations (i.e., requirement for non-slippery work surface) except where the cleanup practice does not result in a discharge and does not leave residues exposed to future storm events. In all such cases, perform initial cleanup by physical removal and minimize chemical usage.

N-12 LAC 33:IX.2701.A SWP3: If applicable, maintain all equipment, parts, dumpsters, trash bins, petroleum products, chemical solvents, detergents, or other material exposed to storm water in a manner which prevents contamination of storm water by pollutants.

N-13 LAC 33:IX.2701.A SWP3: If applicable, recycle or contain for proper disposal all waste fuel, lubricants, coolants, solvents, or other fluids used in the repair or maintenance of vehicles or equipment. Clean up spills of these materials by dry means whenever possible.

N-14 LAC 33:IX.2701.A SWP3: If applicable, ensure that all storage tank installations with a capacity greater than 660 gallons for an individual container, or 1,320 gallons for two or more containers in aggregate within a common storage area, are constructed so that a secondary means of containment is provided for the entire contents of the largest tank plus sufficient freeboard to allow for precipitation. Diked areas should be sufficiently impervious to contain spills.

N-15 LAC 33:IX.2701.A SWP3: If applicable, maintain all diked areas surrounding storage tanks or storm water collection basins free of residual oil or other contaminants so as to prevent the accidental discharge of these materials in the event of flooding, dike failure, or improper draining of the diked area.

N-16 LAC 33:IX.2701.A SWP3: If applicable, equip all drains from diked areas with valves kept in the closed condition except during periods of supervised discharge.

Page 24 of 25 P401_PM_REQ PERMIT REQUIREMENTS Agency Interest No.: 2889 Entergy Operations Inc - River Bend Station TEMPO Activity No.: PER20220001 Permit No.: LA0042731 NARRATIVE REQUIREMENTS

N-17 LAC 33 :IX.2701.A SWP3: If applicable, inspect and maintain all check valves, tanks, drains, or other potential sources of pollutant releases on a regular basis to assure their proper operation and to prevent the discharge of pollutants.

N-18 LAC 33 :IX.2701.A SWP3: If applicable, assure compliance with all applicable regulations promulgated under the Louisiana Solid Waste and Resource Recovery Law and the Hazardous Waste Management Law (La. R.S. 30:2151, etc.). Reference management practices required under above regulations in the SWP3.

N-19 LAC 33 :IX.2701.A SWP3: If applicable, amend the SWP3 whenever there is a change in the facility or change in the operation of the facility which materially increases the potential for the ancillary activities to result in a discharge of significant amounts of pollutants.

N-20 LAC 33:IX.2701.A SWP3: If applicable, if the SWP3 proves to be ineffective in achieving the general objectives of preventing the release of significant amounts of pollutants to water of the state, then the specific objectives and requirements of the SWP3 shall be subject to modification to incorporate revised SWP3 requirements.

N-21 LAC 33:IX.2701.A SWP3: Facility Specific SWP3 Conditions : None.

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Other Conditions:

In addition to the standard conditions required in all permits and listed in ST AND ARD CONDITIONS FOR LPDES PERMITS, the Office has established the following additional conditions in accordance with the Louisiana Water Quality Regulations.

A. This permit does not in any way authorize the permittee to discharge a pollutant not listed or quantified in the application or limited or monitored for in the permit.

B. Authorization to discharge pursuant to the conditions of this permit does not relieve the permittee of any liability for damages to state waters or private property. For discharges to private land, this permit does not relieve the permittee from obtaining proper approval from the landowner for appropriate easements and rights of way.

C. For definitions of monitoring and sampling terminology see STANDARD CONDITIONS FOR LPDES PERMITS, Section F.

D. EPA document 833-B-09-002 (Storm Water Management for Industrial Activities) may be used as a guidance for the Stormwater Pollution Prevention Plan and may be obtained at the following website:

https://www.epa.gov/ sites / pro d uction/ file s/ 2 015-11 /documents / swppp guide indu s trial 2015.pdf

E. PERMIT REOPENER CLAUSE

This permit may be modified, or alternatively, revoked and reissued, to comply with any applicable effluent standard or limitations issued or approved under sections 301 (b )(2)(C) and (D); 304(b)(2); and 307(a)(2) of the Clean Water Act or more stringent discharge limitations and/or additional restrictions in the future to maintain the water quality integrity and the designated uses of the receiving water bodies based upon additional water quality studies and/or Total Maximum Daily Loads (TMDLs), if the effluent standard, limitations, water quality studies or TMDLs so issued or approved:

I. Contain different conditions or is otherwise more stringent than any effluent limitation in the permit; or

2. Control any pollutant not limited in the permit; or

3. Require reassessment due to change in 303(d) status of waterbody; or

4. Incorporate the results of any total maximum daily load allocation, which may be approved for the receiving water body.

5. A review of analytical data provided in the permit renewal application for Outfall 003 showing results above the MQL for Total Zinc, Total Copper, and Total Phenols. Therefore, the permittee shall develop a plan for investigation of possible

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sources of Total Zinc, Total Copper, and Total Phenols in the effluent discharged from this outfall. The investigation plan shall be submitted for LDEQ Water Permits Division approval no later than 180 days after the effective date of the permit. Once the plan has been approved, the permittee shall proceed with the investigation and submit a written report to the Water Permits Division no later than three years from the effective date of the permit. The report shall include the investigation results and plan of action for pollutant reduction (if needed).

Information gathered during the investigation may be used to reopen the existing permit or develop conditions/requirements for future permits.

F. 24-HOUR ORAL REPORTING: DAILY MAXIMUM LIMITATION VIOLATIONS

Under the provisions of Standard Conditions D.6.e.(3) of this permit, violations of daily maximum limitations for the following pollutants shall be reported orally to the Office of Environmental Compliance within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months from the time the permittee became aware of the violation followed by a written report in five days.

Pollutant(s):

Total Lead Benzene Total BTEX Total Copper Total Chromium Total Zinc

G. COMPOSITE SAMPLING

Unless otherwise specified in this permit, the term "24-hour composite sample" means a sample consisting of a minimum of four (4) aliquots of effluent collected at regular intervals over a normal 24-hour operating day and combined in proportion to flow or a sample continuously collected in proportion to flow over a normal 24-hour operating period.

H. 40 CFR PART 136 {See LAC 33:IX.4901) ANALYTICAL REQUIREMENTS

Unless otherwise specified in this permit, monitoring shall be conducted according to analytical, apparatus and materials, sample collection, preservation, handling, etc.,

procedures listed at 40 CFR Part 136, and in particular, Appendices A, B, and C (See LAC 33:IX.4901).

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I. MINIMUM QUANTIFICATION LEVEL (MOL)

NONCONVENTIONAL MOL (µg/L)

Phenolics, Total Recoverable (4AAP) 5 Chlorine (Total Residual) 33 3-Chlorophenol 10 4-Chlorophenol 10 2,3-Dichlorophenol 10 2,5-Dichlorophenol 10 2,6-Dichlorophenol 10 3,4-Dichlorophenol 10 2,4-D 10 2,4,5-TP (Silvex) 4

METALS AND CY AN IDE MOL (µg/L)

Aluminum (Total) 2.5 Antimony (Total) 60 Arsenic (Total) 5 Beryllium (Total) 0.5 Cadmium (Total) 1 Chromium (Total) 10 Chromium (3+) 10 Chromium (6+) 10 Copper (Total) 3 Lead (Total) 2 Mercury (Total) 0.005 Molybdenum (Total) 30 Nickel (Total) Freshwater 5 Nickel (Total) Marine 5 Selenium (Total) 5 Silver (Total) 0.5 Thallium (Total) 0.5 Zinc (Total) 20 Cyanide (Total) 10

DIOXIN MOL (µg/L) 2,3,7,8-TCDD 0.00001

VOLATILE COMPOUNDS MOL (µg/L)

Acrolein 50 Acrylonitrile 20 Benzene 10

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Bromoform 10 Carbon Tetrachloride 2 Chlorobenzene 10 Chlorodibromomethane 10 Chloroethane 50 2-Chloroethylvinylether 10 Chloroform 10 1,2-Dichlorobenzene 10 1,3-Dichlorobenzene 10 1,4-Dichlorobenzene 10 Dichlorobromomethane 10 I, 1-Dichloroethane 10 1,2-Dichloroethane 10 1, 1-Dichloroethylene 10 1,2-Dichloropropane 10 1,3-Dichloropropene [1,3-Dichloropropylene] 10 Ethyl benzene 10 Methyl Bromide [Bromomethane] 50 Methyl Chloride [Chloromethane] 50 Methylene Chloride 20 1, 1,2,2-Tetrachloroethane 10 Tetrachloroethylene 10 Toluene 10 1,2-trans-Dichloroethylene 10 1, 1, I-Trichloroethane 10 1,1,2-Trichloroethane IO Trichloroethylene 10 Vinyl Chloride 10

ACID COMPOUNDS MOL {µg/L) 2-Chlorophenol 10 2,4-Dichlorophenol 10 2,4-Dimethylphenol 10 4,6-Dinitro-o-Cresol [2-Methyl-4,6-Dinitrophenol] 50 2,4-Dinitrophenol 50 2-Nitrophenol 20 4-N itrophenol 50 p-Chloro-m-Cresol [4-Chloro-3-Methylphenol] 10 Pentachlorophenol 5 Phenol 10 2,4,6-Trichlorophenol 10

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BASE/NEUTRAL COMPOUNDS MOL {µg/L)

Acenaphthene 10 Acenaphthy lene 10 Anthracene 10 Benzi dine 50 Benzo( a )anthracene 5 Benzo( a )pyrene 5 Benzo (b) Fluoranthene (3,4-Benzofluoranthene] 10 Benzo(ghi)pery lene 20 Benzo(k )fl uoranthene 5 Bis(2-chloroethoxy) Methane 10 Bis(2-chloroethyl) Ether 10 Bis(2-chloroisopropyl) Ether 10 Bis(2-ethylhexyl) Phthalate 10 4-Bromophenyl Phenyl Ether 10 Butylbenzyl Phthalate 10 2-Chloronapthalene 10 4-Chlorophenyl Phenyl Ether 10 Chrysene 5 Dibenzo( a,h )anthracene 5 3,3'-Dichlorobenzidine 5 Diethyl Phthalate 10 Dimethyl Phthalate 10 Di-n-Butyl Phthalate 10 2,4-Dinitrotoluene 10 2,6-Dinitrotoluene 10 Di-n-octyl Phthalate 10 1,2-Diphenylhydrazine 20 Fl uoranthene 10 Fluorene 10 Hexachlorobenzene 5 Hexachlorobutadiene 10 Hexachlorocyclopentadiene 10 Hexachloroethane 20 Indeno{l,2,3-cd)pyrene (2,3-o-Phenylene Pyrene] 5 Isophorone 10 Naphthalene 10 N itrobenzene 10 n-Nitrosodimethylamine 50 n-Nitrosodi-n - Propylamine 20 n-Nitrosodiphenylamine 20 Phenanthrene 10 Pyrene 10

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1,2,4-Trichlorobenzene

PESTICIDES MOL {µg/L)

Aldrin 0.01 Alpha-BHC 0.05 Beta-BHC 0.05 Gamma-BHC [Lindane] 0.05 Delta-BHC 0.05 Chlordane 0.2 4,4'-DDT 0.02 4,4'-DDE [p,p-DDX] 0.1 4,4'-DDD [p,p-TDE] 0.1 Dieldrin 0.02 Alpha-Endosulfan 0.01 Beta-Endosulfan 0.02 Endosulfan Sulfate 0.1 Endrin 0.02 Endrin Aldehyde 0.1 Heptachlor 0.01 Heptachlor Epoxide [BHC-Hexachlorocyclohexane] 0.01 PCB-1242 0.2 PCB-1254 0.2 PCB-1221 0.2 PCB-1232 0.2 PCB-1248 0.2 PCB-1260 0.2 PCB-1016 0.2 Toxaphene 0.3

The permittee may develop an effluent specific method detection limit (MDL) in accordance with Appendix B to 40 CFR Part 136 (See LAC 33:IX.4901 ). For any pollutant for which the permittee determines an effluent specific MDL, the permittee shall send to this Office a report containing QA/QC documentation, analytical results, and calculations necessary to demonstrate that the effluent specific MDL was correctly calculated. An effluent specific minimum quantification level (MQL) shall be determined in accordance with the following calculation:

MQL = 3.3 x MDL

Upon written approval by this Office, the effluent specific MQL may be utilized by the permittee for all future Discharge Monitoring Report (DMR) calculations and reporting requirements.

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All effluent testing shall be conducted utilizing EPA-approved methods from laboratories accredited to conduct the required analyses.

For Limited Parameters:

In accordance with 40 CFR 122.44(i)(l )(iv), the permittee is required to use the most sufficiently sensitive method necessary to prove compliance with the effluent limitations.

For a given parameter, if the MQL prescribed by the permit is less than the permit limitation, any EPA-approved method with a method detection level (MDL) which is equal to or less than this MQL may be utilized. In this scenario, if an individual analytical result is below the MQL, the permittee may report "0" on a discharge monitoring report (DMR).

When the MQL prescribed by the permit is greater than the permit limitation, the permittee shall use a sufficiently sensitive EPA-approved method capable of yielding a quantifiable result which proves compliance with the limitation. If a sufficiently sensitive method is available with an MDL equal to or less than the permit limit, and the individual analytical result is less than the MDL, the permittee may report "0" on a DMR. However, some instances may occur when there is no sufficiently sensitive EPA-approved method which will yield a quantifiable result equal to or less than the permit limitation. In these cases, the permittee must submit supporting documentation indicating that they used the most sensitive method available. In this scenario, if an individual analytical result is not detectable at the MDL of the method used, the permittee must report "non-detect" on the DMR. Please note that ANY quantifiable result above the permit limitation shall be reported as an excursion.

For Report Only Parameters:

In accordance with 40 CFR 122.44(i)(l)(iv)(2), the permittee is required to use the most sufficiently sensitive method to quantify the presence of a pollutant. Therefore, the permittee must select a method with an MDL that is at or below the water quality criterion (if applicable) or the MQL, whichever is less. Please be advised that should a sufficiently sensitive method not be available, the permittee must submit supporting documentation stating this.

For reporting purposes, if the most sensitive method is greater than the more stringent of the MQL or the water quality criteria, and the analytical result is less than the MDL, "non-detect" shall be reported on the DMR. If the method is less than or equal to the more stringent of the MQL or water quality criteria and the analytical result is less than that value, zero (0) shall be reported on the DMR.

J. The permittee shall achieve compliance with the effluent limitations and monitoring requirements specified for discharges in accordance with the following schedule

effective date of the permit with the exception of the outfall as indicated below.

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Other Conditions continued:

OUTFALL 003 ACTIVITY SCHEDULE Develop a plan for investigation of Submit within 180 days from the effective possible sources of Total Zinc, Total date of the permit Copper, and Total Phenols. See Other Conditions, Paragraph E.5.

Submit results of investigation. See Other Due three years from plan approval Conditions, Paragraph E.5.

316(b) REQUIREMENTS ACTIVITY SCHEDULE Annual reports shall be submitted one Submit Annual Certification Statement year from the date of the previous annual and Report (Other Conditions, Paragraph reports. See Other Conditions, Paragraph T.4) T-Record Keeping and Reporting for additional submittal instructions.

Submit request to reduce the 3 l 6(b) A request for reduced application material application information required in permit requirements must be submitted to the renewal application (Other Conditions, Department of Environmental Quality, Paragraph T.6) Office of Environmental Services -Water Permits Division at least 2 years and 6 months prior to permit expiration. The request must identify each element of the 40 CFR 122.21 (r) application studies that has not substantially changed since the previous permit application and the basis for the determination. This Office has the discretion to accept or reject any part of the request.

ALL OTHER PERMIT REQUIREMENTS ACTIVITY COMPLIANCE DATE All other outfalls and permit requirements Effective date of the permit

K.Section III of LP DES application data for Outfall 007 and Internal Outfalls 301, 401, 501, and 601 (see LAC 33:IX.2501.G) must be submitted no later than two years after the effective date of the permit if a discharge occurs at these outfalls or upon first discharge after that timeframe. Upon submittal of appropriate items, LDEQ may choose to modify, or alternatively revoke and reissue this permit to change effluent limitations based on the actual reported flow or production. Additionally, the permit may be reopened to incorporate the results of any total maximum daily load allocation, which may be approved for the receiving water body.

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L. TEMPERATURE

Daily temperature discharge is defined as the flow-weighted average temperature (FW AT) and, on a daily basis, shall be monitored and recorded in accordance with the Narrative and Effluent Limitations and Monitoring Requirements in the Permit Requirements section of this permit. FW AT shall be calculated at equal time intervals not greater than two hours.

The method of calculating FW AT is as follows:

FWAT = SUMMATION {Instantaneous Flow X Instantaneous Temperature)

SUMMATION (Instantaneous Flow)

"Daily Average Temperature" (also known as monthly average) shall be the arithmetic average of all FW A Ts calculated during the calendar month.

"Daily Maximum Temperature" (also known as daily maximum) shall be the highest FW AT calculated during the calendar month.

M. PROHIBITION OF PCB DISCHARGES

There shall be no discharge of polychlorinated biphenyls (PCBs). The mm1mum quantification level for PCBs is 0.2 µg/1. If any individual analytical test result for PCBs is less than the minimum quantification level, then a value of zero (0) shall be used for the Discharge Monitoring Report (DMR) calculations and reporting requirements.

N. LOW VOLUME WASTE SOURCES

The term "low volume waste sources" means, taken collectively as if from one source, wastewater from all sources except those for which specific limitations or standards are otherwise established. Low volume waste sources include, but are not limited to, the following: wastewaters from ion exchange water treatment systems, water treatment evaporator blowdown, laboratory and sampling streams, boiler blowdown, floor drains, cooling tower basin cleaning wastes, recirculating house service water systems, and wet scrubber air pollution control systems whose primary purpose is particulate removal.

Sanitary wastewaters, air conditioning wastewaters, and wastewater from carbon capture or carbon sequestration systems are not included.

0. FREE AVAILABLE CHLORINE

The term "free available chlorine" means the value obtained using any of the "chlorine-free available" methods in Table 1B in 40 CFR I 36.3(a) where the method has the capability of measuring free available chlorine, or other methods approved by the permitting authority.

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Free available chlorine may not be discharged from any unit for more than two hours in any one day and not more than one unit in any plant may discharge free available chlorine at any one time.

P. PROHIBITION OF 126 PRIORITY POLLUTANTS

There shall be no discharge of any 126 priority pollutants (40 CFR 423 Appendix A) associated with the chemicals added for cooling tower maintenance, except for Total Chromium and Total Zinc. The minimum quantification levels for the 126 priority pollutants are found in Other Conditions, Paragraph I.

Q. CHEMICAL METAL CLEANING WASTE

The term "chemical metal cleaning waste" means any wastewater resulting from the cleaning of any metal process equipment with chemical compounds, including but not limited to, boiler tube cleaning.

R. METAL CLEANING WASTE

The term "metal cleaning waste" means any wastewater resulting from cleaning (with or without chemical cleaning compounds) any metal process equipment including, but not limited to, boiler tube cleaning, boiler fireside cleaning, and air preheater cleaning.

S. ZEBRA MUSSEL TREATMENT

The terms and conditions of the most recently approved zebra mussel treatment program submitted by Entergy Operations, Inc., River Bend Station shall be enforceable as if part of this permit.

According to Paragraph U.3.d., Biomonitoring Requirements-Samples and Composites, the permittee must collect composite samples that are "representative of any periodic episodes of chlorination, biocide usage, or other potentially toxic substances discharged on an intermittent basis." Any time the treatment method involves an increase in the concentration of a treatment chemical, a change in the type of treatment chemical used, or if any event occurs that creates the potential for an effluent with a higher toxic nature, additional biomonitoring according to the terms and conditions of the biomonitoring section in Other Conditions of this permit shall be required.

The permittee must notify this Office if changes occur in the zebra mussel control plan and obtain approval prior to initiating the new treatment. If chlorine is applied to control zebra mussels, the discharge shall not exceed a daily maximum Total Residual Chlorine (TRC)

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concentration of 0.2 mg/L. Monitoring shall be performed at a frequency of I/day by grab sample, during periods of chlorine application.

T. CLEAN WATER ACT 316(b) COOLING WATER INTAKE STRUCTURE (CWIS)

REQUIREMENTS

1. Flow Monitoring

a. The permittee shall monitor the actual intake flows daily. The monitoring must be representative of normal operations, and must include monitoring cooling water withdrawals, make-up water, and blowdown volume (40 CFR 125.94(c)(l)). The average monthly and maximum daily intake flows shall be reported with the monthly DMR and in the annual report. The average monthly and maximum daily make-up water flows and blowdown flows shall be reported in the comments section of the DMR and in the annual report (40 CFR 125.97).

b. Flow Monitoring "Daily Sample Type-Alternate Procedure

In the event of flow monitoring device failure, cycles of concentration shall be monitored daily. The permittee will operate cooling towers with a minimum of 3 cycles of concentration. This alternative procedure is allowed because 40 CFR 125.94 (c) (1) states that cycles of concentration for cooling towers may be monitored in lieu of daily intake flow monitoring.

Monitoring results shall be submitted to LDEQ with the monthly DMR and in the annual report. When reporting DMRs electronically and monitoring is not required during the monitoring period, use a no data indicator (NODI) code of 9 for conditional/not required. In the event of a flow monitoring device failure, the permittee shall provide the following information in the comment section of the DMR:

1. The date and time of the flow monitoring device failure.

11. The date and time that the flow monitoring device is restored.

2. Visual and Remote Inspections

The 3 l 6(b) rule requires the permittee to either conduct visual inspections or employ remote monitoring devices during the period the cooling water intake structure is in operation. The permittee must conduct such inspections at least weekly to ensure that any technologies operated to comply with 40 CFR 125.94 are maintained and operated to function as designed including those installed to protect Federally-listed threatened or endangered species or designated critical habitat. In accordance with 40 CFR 125. 96 (e), the permitting authority may establish alternative procedures if this requirement is

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Other Conditions continued:

not feasible.

River Bend has selected to comply with the impingement mortality standard in 40 CFR 125.94(c)(l) by operating a closed-cycle recirculating system. This intake structure feeds into a cooling system that meets the definition of a closed-cycle recirculating system in 40 CFR 125.92(c). Due to the turbidity of the Mississippi River, it is infeasible to conduct remote inspections. Therefore, the site will monitor and report intake flows daily as described in the alternative monitoring plan submitted by Entergy on April 11, 2017, to ensure that the chosen technology is maintained and operated to function as designed. The monitoring must be representative of normal operations, and must include monitoring cooling water withdrawals, make-up water, and blowdown volume.

3. Record Keeping and Reporting

a. The permittee shall keep records of all the data used to complete the permit application and show compliance with the requirements, any supplemental information developed during the application process, and any compliance monitoring data until the subsequent permit is issued. If a request for reduced permit application studies is approved, the permittee must keep records of all submissions that are part of the previous permit application until the subsequent permit is issued (40 CFR 125.95(e) and 125.97(d)).

b. All records supporting the BT A determination for entrainment under 40 CFR 125.98(f) or (g) must be retained until such time as the Administrative Authority revises the determination of BT A for entrainment in the permit.

c. The permittee shall provide the below information to the LDEQ in an annual certification statement and report signed by the responsible corporate officer:

1. Intake flow and cycles of concentration monitoring records. Including cooling water withdrawals, make-up water, and blowdown volume. See Paragraph T. l above;

11. Records of visual or remote inspections (if applicable); and

m. Certification that water intake structure technologies are being maintained and operated as set forth in this permit, or a justification to allow a modification of practices.

iv. If there are substantial modifications to the operation of any unit that impacts the cooling water withdrawals or operation of the water intake structure(s), provide a summary of those changes. In addition, you must

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submit revisions to the information required at 40 CFR 122.21 (r) of this chapter in your next permit application.

v. If the information contained in the previous year's annual certification is still applicable, the certification may simply state as such. The statement, along with any applicable data submission requirements specified in this section shall constitute the annual certification.

d. The annual reports shall be submitted one year from the date of the previous annual reports.

The permittee shall submit the annual report to the following address or electronically as services become available to accept these reports :

Department of Environmental Quality Office of Environmental Compliance P.O. Box 4312 Baton Rouge, Louisiana 70821-4312 Attn: Permit Compliance Unit

A copy of the annual report shall also be submitted to the following address:

Department of Environmental Quality Office of Environmental Services Water Permits Division P.O. Box 4313 Baton Rouge, Louisiana 70821-4313 Attn: Industrial Permits Section

4. Performance Standards

The permittee must design and operate the cooling water intake structure in compliance with the following:

a. The facility's CWIS existing cooling water intake system described in the permit 3 l 6(b) application information submitted with the renewal application dated May 3, 2016 and confirmed September 14, 2022, must be operated and maintained as designed and in accordance with best management practices (BMPs) that will minimize any adverse environmental impacts (AEI). In addition, the permittee must comply with the requirements set forth in Section 3 l 6(b) of the CW A, 40 CFR Part 125, Subpart J and 40 CFR Part 401.14. If it is later determined that the cooling water intake system for this facility does not represent BT A for

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minimizing adverse environmental impacts, the permit may be reopened to incorporate additional requirements.

b. The permittee must operate the cooling water intake structure based on the current design, location, and utilization rate to minimize impingement mortality and entrainment of aquatic organisms. This will meet the site-specific BT A Standards for Impingement Mortality and Entrainment as required by 40 CFR 125.94(c) and

( d), respectively.

c. The permittee will use cooling towers as necessary to minimize AEI by reducing the need for additional water via CWIS.

d. The permittee will operate cooling towers with a mm1mum of 3 cycles of concentration.

e. The design intake flow of the cooling water intake structure must be no greater than 46 MGD, with exception to temporary changes due to environmental factors outside of the control of the company (e.g. flooding conditions). Notification of factors outside company control shall be made to the Office of Environmental Services within 30 days and must include supporting documentation for the temporary change in the DIF. Examples of acceptable documentation may include waterbody gauge readings and information regarding facility pump operation for that waterbody gauge reading. These occurrences shall also be discussed in the annual report.

f. All performance and design standards established in the information submitted with the permittee's application shall be achieved. The permittee shall notify the Office of Environmental Services of any changes in the facility design or performance. At that time, the Office of Environmental Services may determine that a permit modification is necessary.

5. Future BTA Determinations

The water intake BT A determination is reviewed in each permit reissuance. In subsequent permit reissuance applications, the permittee shall provide all the information required in 40 CFR 122.21 (r) and any other additional information required by this Office.

The permittee may, in subsequent permit applications, request to reduce the information required if conditions at the facility and in the waterbody remain substantially unchanged since the previous application. Exemptions from some permit application requirements are possible in accordance with 40 CFR 125.95(c), where information already submitted is sufficient. Past submittals and previously conducted

Revised 02/10/23 Entergy Operations, Inc.

AI No. 2889 LA0042731 Page 15 of25

Other Conditions continued:

studies may satisfy some or all of the application material requirements. If an exemption is desired, a request for reduced application material requirements must be submitted to the Department of Environmental Quality, Office of Environmental Services - Water Permits Division at least 2 years and 6 months prior to permit expiration. The request must identify each element of the 40 CFR 122.2l(r) application studies that has not substantially changed since the previous permit application and the basis for the determination. This Office has the discretion to accept or reject any part of the request.

6. Endangered Species Act

Nothing in this permit authorizes take for the purposes of a facility's compliance with the Endangered Species Act. Refer to 40 CFR 125.98(b)(l) and (2) and 125.98(i).

Contact the state Natural Heritage Program staff, (337) 491-2575, with inquiries regarding incidental take of state-listed threatened and endangered species; and the US Fish and Wildlife Service, (337) 291-3109, with inquiries regarding the incidental take of federally-listed threatened and endangered species.

U. WHOLE EFFLUENT TOXICITY TESTING

It is unlawful and a violation of this permit for a permittee or the designated agent, to manipulate test samples in any manner, to delay sample shipment, or to terminate or to cause to terminate a toxicity test. Once initiated, all toxicity tests must be completed unless

~pecific authority has been granted by the Louisiana Department of Environmental Quality.

1. SCOPE AND METHODOLOGY

a. The permittee shall test the effluent for toxicity in accordance with the provisions in this section.

APPLICABLE TO OUTF ALL(S) AND SPECIES: 001 - DA 1 001 - PI 2

CRITICAL DILUTION: 0.1%

EFFLUENT DILUTION SERIES: 0.05%, 0.07%, 0.09%, 0.1 %, and 0.2%

SAMPLE TYPE: 24-Hour Composite

1 DA = Daphnia pulex 2 Pl = Pimephales promelas

Revised 02/10/23 Entergy Operations, Inc.

LA0042731 Al No. 2889 Page 16 of25 Other Conditions continued:

TEST SPECIES/METHODS: 40 CFR Part 136 (See LAC 33:IX.4901)

Daphnia pulex acute static renewal 48-hour definitive toxicity test using EPA-821-R-02-012, or the latest update thereof. A minimum of five (5) replicates with ten (10) organisms per replicate must be used in the control and in each effluent dilution of this test.

Pimephales promelas (Fathead minnow) acute static renewal 48-hour definitive toxicity test using EPA-821-R-02-012, or the latest update thereof. A minimum of five (5) replicates with ten (10) organisms per replicate must be used in the control and in each effluent dilution of this test.

b. The NOEC (No Observed Effect Concentration) is defined as the greatest effluent dilution at and below which lethality that is statistically different from the control (0% effluent) at the 95% confidence level does not occur.

c. This permit may be reopened to require whole effluent toxicity limits, chemical specific effluent limits, additional testing, and/or other appropriate actions to address toxicity.

d. Test failure is defined as a demonstration of statistically significant lethal effects to a test species at or below the effluent critical dilution.

2. PERSISTENT LETHALITY

The requirements of this subsection apply only when a toxicity test demonstrates significant lethal effects at or below the critical dilution. Significant lethal effects are herein defined as a statistically significant difference at the 95% confidence level between the survival of the appropriate test organism in a specified effluent dilution and the control (0% effluent).

If any valid test demonstrates significant lethal effects to a test species at or below the critical dilution, the frequency of testing for that species is automatically increased to once per quarter for the term of the permit.

a. The permittee shall conduct a total of three (3) additional tests for any species that demonstrates statistically significant lethal toxic effects at the critical dilution or lower effluent dilutions. The additional tests shall be conducted monthly during the next three consecutive months in which a discharge occurs to determine if toxicity is persistent or occurs on a periodic basis. The purpose of this testing is to determine whether toxicity is present at a level and frequency that will provide toxic sample results to use in

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LA0042731 Al No. 2889 Page 17 of 25

Other Conditions continued:

performing a Toxicity Reduction Evaluation (TRE). If no additional test failures occur during the retest monitoring period, the testing frequency will be once per quarter for the term of the permit or until another test failure occurs. The permittee may substitute one of the additional tests in lieu of one routine toxicity test. A full report shall be prepared for each test required by this section in accordance with procedures outlined in item 4 of this section and attached to the NetDMR submittal period discharge monitoring report (DMR) for the permitting authority for review.

b. If any of the valid additional tests demonstrates significant lethal effects at or below the critical dilution, the permittee shall initiate Toxicity Reduction Evaluation (TRE) requirements as specified in item 6 of this section. The permittee shall notify the Department of Environmental Quality, Office of Environmental Compliance-Permit Compliance Unit and Office of Environmental Services-Water Permits Division - General and Municipal Permits Section in writing within 5 days of the failure of any retest, and the TRE initiation date will be the test completion date of the first failed retest.

A TRE may also be required due to a demonstration of intermittent lethal effects at or below the critical dilution, or for failure to perform the required retests.

c. The provisions of item 2.a are suspended upon submittal of the TRE Action Plan.

3. REQUIRED TOXICITY TESTING CONDITIONS

a. Test Acceptance

The permittee shall repeat a test, including the control and all effluent dilutions, if the procedures and quality assurance requirements defined in the test methods or in this permit are not satisfied, including the following additional criteria:

1. Each toxicity test control (0% effluent) must have a survival equal to or greater than 90%.

11. The percent coefficient of variation between replicates shall be 40%

or less in the control (0% effluent) for the Daphnia pulex survival test and Fathead minnow survival test.

m. The percent coefficient of variation between replicates shall be 40%

or less in the critical dilution, unless significant lethal effects are exhibited for the Daphnia pulex survival test and Fathead minnow survival test.

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LA0042731 AI No. 2889 Page 18 of25

Other Conditions continued:

Test failure may not be construed or reported as invalid due to a coefficient of variation value of greater than 40%. A repeat test shall be conducted within the required reporting period of any test determined to be invalid.

Tests deemed invalid per the requirements of item 3 will not be considered failures.

b. Statistical Interpretation

For the Daphnia pulex survival test and the Fathead minnow survival test, the statistical analyses used to determine if there is a statistically significant difference between the control and the critical dilution shall be in accor-dance with the methods for determining the No Observed Effect Concen-tration (NOEC) as described in EPA-821-R-02-012, or the most recent update thereof.

If the conditions of Test Acceptability are met in Item 3.a above and the percent survival of the test organism is equal to or greater than 90% in the critical dilution concentration and all lower dilution concentrations, the test shall be considered to be a passing test, and the permittee shall report an NOEC of not less than the critical dilution for the DMR reporting requirements found in Item 4 below.

c. Dilution Water

1. Dilution water used in the toxicity tests will be receiving water collected as close to the point of discharge as possible but unaffected by the discharge. The permittee shall substitute synthetic dilution water of similar pH, hardness, and alkalinity to the closest downstream perennial water for; A. toxicity tests conducted on effluent discharges to receiving water classified as intermittent streams; and

8. toxicity tests conducted on effluent discharges where no receiving water is available due to zero flow conditions.

11. If the receiving water is unsatisfactory as a result of instream toxicity (fails to fulfill the test acceptance criteria of item 3.a), the permittee may substitute synthetic dilution water for the receiving water in all subsequent tests provided the unacceptable receiving water test met the following stipulations:

A. a synthetic dilution water control which fulfills the test

Revised 02/1 0/23 Entergy Operations, Inc.

LA0042731 AI No. 2889 Page 19 of 25

Other Conditions continued:

acceptance requirements of item 3.a was run concurrently with the receiving water control;

8. the test indicating receiving water toxicity has been carried out to completion (i.e., 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months );

C. the permittee includes all test results indicating receiving water toxicity with the full report and information required by item 4 below; and

D. the synthetic dilution water shall have a pH, hardness, and alkalinity similar to that of the receiving water or closest downstream perennial water not adversely affected by the discharge, provided the magnitude of these parameters will not cause toxicity in the synthetic dilution water.

d. Samples and Composites

1. The permittee shall collect two flow-weighted 24-hour composite samples from the outfall(s) listed at item I.a above. A 24-hour com-posite sample consists of a minimum of 4 effluent portions collected at equal time intervals representative of a 24-hour operating day and combined proportional to flow or a sample continuously collected proportional to flow over a 24-hour operating day.

11. The permittee shall collect a second 24-hour composite sample for use during the 24-hour renewal of each dilution concentration for both tests. The permittee must collect the 24-hour composite samples so that the maximum holding time for any effluent sample shall not exceed 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months . The permittee must have initiated the toxicity test within 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months after the collection of the last portion of the first 24-hour composite sample. Samples shall be chilled to 0-6 degrees Centigrade during collection, shipping and/or storage.

m. The permittee must collect the 24-hour composite samples such that the effluent samples are representative of any periodic episode of chlorination, biocide usage or other potentially toxic substance discharged on an intermittent basis.

1v. If the flow from the outfall(s) being tested ceases during the collec-tion of effluent samples, the requirements for the minimum number of effluent samples, the minimum number of effluent portions and the sample holding time are waived during that sampling period.

Revised 02/10/23 Entergy Operations, Inc.

LA0042731 AI No. 2889 Page 20 of25

Other Conditions continued:

However, the permittee must collect an effluent composite sample volume during the period of discharge that is sufficient to complete the required toxicity tests with daily renewal of effluent. When possible, the effluent samples used for the toxicity tests shall be collected on separate days. The effluent composite sample collec-tion duration and the static renewal protocol associated with the abbreviated sample collection must be documented in the full report required in item 4 of this section.

4. REPORTING

a. A valid test must be completed and test results must be submitted for each species during each Monitoring Period. The permittee shall prepare a full report of the results of all tests conducted pursuant to this Part in accordance with the Report Preparation Section of EPA-821-R-02-012, for every valid or invalid toxicity test initiated, whether carried to completion or not. The permittee shall retain each full report pursuant to the provisions of the Standard Conditions Section C of this permit. For any test which fails, is considered invalid, or which is terminated early for any reason, the full report must be submitted for agency review. Any available information relevant to the test failure (e.g., faulty equipment, severe weather conditions) should be included in this report to assist the agency in assessing appropriate controls to prevent future toxic discharges. The permittee shall submit the first full report to the following address or electronically as services become available to accept these reports:

Department of Environmental Quality Office of Environmental Compliance Enforcement Division P. 0. Box 4312 Baton Rouge, Louisiana 70821-4312 Attn: Permit Compliance Unit

b. The permittee shall submit the results of each valid toxicity test on the DMR for that Monitoring Period in accordance with the Standard Conditions Section 0.4 and the DMR Monitoring Period schedule contained in the submittal/action requirements of this permit. Submit retest information clearly marked as such on the DMR for the Monitoring Period in which the retest occurred. Only results of valid tests are to be reported on the NetDMR submittal. The permittee shall attach the Table 1 Summary Sheet to the NetDMR submittal with each valid test.

}. Pimephales promelas (Fathead minnow)

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LA0042731 Al No. 2889 Page 21 of 25

Other Conditions continued:

A. If the No Observed Effect Concentration (NOEC) for survival is less than the critical dilution, enter a "1 ";

otherwise, enter a "0" for Parameter No. TEM6C.

8. Report the NOEC value for survival, Parameter No.

TOM6C.

C. Report the highest ( critical dilution or control) Coefficient of Variation, Parameter No. TQM6C.

11. Daphnia pulex

A. If the NOEC for survival is less than the critical dilution, enter a "l "; otherwise, enter a "0" for Parameter No.

TEM3D.

8. Report the NOEC value for survival, Parameter No.

TOM3D.

C. Report the highest ( critical dilution or control) Coefficient of Variation, Parameter No. TQM3D.

m. The permittee shall report the following results for all VALID toxicity retests on the NetDMR for that Monitoring Period.

A. Daphnia pulex

(i) Retest #1 (STORET DA22415): If the first monthly retest following failure of a routine test for Daphnia pulex results in an NOEC for survival less than the critical dilution, report a "1 "; otherwise, report a "0".

(ii) Retest #2 (STORET DA22416): If the second monthly retest following failure of a routine test for Daphnia pulex results in an NOEC for survival less than the critical dilution, report a "1 "; otherwise, report a "O".

(iii) Retest #3 (STORET DA51443): If the third monthly retest following failure of a routine test for Daphnia pulex results in an NOEC for survival less than the critical dilution, report a "I"; otherwise, report a "O".

Revised 02/10/23 Entergy Operations, Inc.

LA0042731 AI No. 2889 Page 22 of25 Other Conditions continued:

B. Pimephales promelas

(i) Retest # 1 (STORET PI224 l 5): If the first monthly retest following failure of a routine test for Pimephales promelas results in an NOEC for survival less than the critical dilution, report a "l ";

otherwise, report a "0".

(ii) Retest #2 (STORET PI224 l 6): If the second monthly retest following failure of a routine test for Pimephales promelas results in an NOEC for survival less than the critical dilution, report a "l ";

otherwise, report a "0".

(iii) Retest #3 (STORET PIS 1443): If the third monthly retest following failure of a routine test for Pimephales promelas results in an NOEC for survival less than the critical dilution, report a "l ";

otherwise, report a "O".

If, for any reason, a retest cannot be performed during the Monitoring Period in which the triggering routine test failure is experienced, the permittee shall attach a report on the following Monitoring Period's NetDMR submittal denoting the attachment as a retest. If retesting is not required during a given Monitoring Period, the permittee shall use the appropriate No Data Discharge Indicator (NODI) Code on corresponding electronic submittals.

The permittee shall attach the toxicity testing information contained in Table I of this permit with the NetDMR submittal subsequent to each and every toxicity test Monitoring Period.

6. TOXICITY REDUCTION EVALUATION (TRE)

a. Within ninety (90) days of confirming lethality in any retest, the permittee shall submit a Toxicity Reduction Evaluation (TRE) Action Plan and Schedule for conducting a TRE. The TRE Action Plan shall specify the approach and methodology to be used in performing the TRE. A Toxicity Reduction Evaluation is an investigation intended to determine those actions necessary to achieve compliance with water quality-based effluent requirements and/or chemical-specific limits by reducing an effluent's toxicity to an acceptable level. A TRE is defined as a step-wise process which combines toxicity testing and analyses of the physical and chemical characteristics of a toxic effluent to identify the constituents

Revised 02/10/23 Entergy Operations, Inc.

LA0042731 Al No. 2889 Page 23 of25 Other Conditions continued:

causing effluent toxicity and/or treatment methods which will reduce the effluent toxicity. The TRE Action Plan shall lead to the successful elimination of effluent toxicity at the critical dilution and include the following:

1. Specific Activities. The plan shall detail the specific approach the permittee intends to utilize in conducting the TRE. The approach may include toxicity characterizations, identifications and confirmation activities, source evaluation, treatability studies, or alternative approaches. When the permittee conducts Toxicity Characterization Procedures the permittee shall perform multiple characterizations and follow the procedures specified in the documents "Methods for Aquatic Toxicity Identification Evalua-tions: Phase I Toxicity Characterization Procedures" (EPA-600/6-91/003) and "Toxicity Identification Evaluation: Characterization of Chronically Toxic Effluents, Phase I" (EPA-600/6-91/005), or alternate procedures. When the permittee conducts Toxicity Identification Evalua-tions and Confirmations, the permittee shall perform multiple identifications and follow the methods specified in the documents "Methods for Aquatic Toxicity Identification Evaluations, Phase II Toxicity Identification Procedures for Samples Exhibiting Acute and Chronic Toxicity" (EPA/600/R-92/080) and "Methods for Aquatic Toxicity Identification Evaluations, Phase Ill Toxicity Confirmation Procedures for Samples Exhibiting Acute and Chronic Toxicity" (EPA/600/R-92/081), as appropriate;

The documents referenced above may be obtained through the National Technical Information Service (NTIS) by phone at 1-800-553-6847, or by writing:

U.S. Department of Commerce National Technical Information Service 5285 Port Royal Road Springfield, VA 22161

11. Sampling Plan (e.g., locations, methods, holding times, chain of custody, preservation, etc.). The effluent sample volume collected for all tests shall be adequate to perform the toxicity test, toxicity characterization, identification and confirmation procedures, and conduct chemical specific analyses when a probable toxicant has been identified;

Where the permittee has identified or suspects specific pollutant(s) and/or source(s) of effluent toxicity, the permittee shall conduct, concurrent with toxicity testing, chemical specific analyses for the identified and/or suspected pollutant(s) and/or source(s) of effluent toxicity. Where lethality

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LA0042731 AI No. 2889 Page 24 of25

Other Conditions continued:

was demonstrated within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months oftest initiation, each 24-hour composite sample shall be analyzed independently. Otherwise the permittee may substitute a composite sample, comprised of equal portions of the individual 24-hour composite samples, for the chemical specific analysis;

111. Quality Assurance Plan (e.g., QA/QC implementation, corrective actions, etc.); and

1v. Project Organization (e.g., project staff, project manager, consulting services, etc.).

b. The permittee shall initiate the TRE Action Plan within thirty (30) days of plan and schedule submittal. The permittee shall assume all risks for failure to achieve the required toxicity reduction.

c. The permittee shall submit a quarterly TRE Activities Report, with the Discharge Monitoring Report in the months of January, April, July, and October, containing information on toxicity reduction evaluation activities including:

1. any data and/or substantiating documentation which identify the pollutant(s) and/or source(s) of effluent toxicity;

11. any studies/evaluations and results on the treatability of the facility's effluent toxicity; and

111. any data which identify effluent toxicity control mechanisms that will reduce effluent toxicity to the level necessary to achieve compliance with permit biomonitoring requirements and/or chemical-specific limits.

The TRE Activities Report shall be submitted to the following addresses or electronically as systems become available to accept these reports:

Department of Environmental Quality Office of Environmental Services P.O. Box 4313 Baton Rouge, Louisiana 70821-4 313 Attn: General and Municipal Permits Section

U.S. Environmental Agency, Region 6 Water Enforcement Branch, 6 EN-WC 1445 Ross Avenue Dallas, Texas 75202

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LA0042731 AI No. 2889 Page 25 of25

Other Conditions continued:

d. The permittee shall submit a Final Report on Toxicity Reduction Evaluation Activities no later than twenty-eight (28) months from confirming lethality in the retests, which provides information pertaining to the specific control mechanism selected that will, when implemented, result in the permittee achieving compliance with permit biomonitoring requirements and/or chemical-specific limits. The report will also provide a specific corrective action schedule for implementing the selected control mechanism.

A copy of the Final Report on Toxicity Reduction Evaluation Activities shall also be submitted to the above addresses or electronically as services become available to accept these reports.

e. Quarterly testing during the TRE is a minimum monitoring requirement. LDEQ recommends that permittees required to perform a TRE not rely on quarterly testing alone to ensure success in the TRE, and that additional screening tests be performed to capture toxic samples for identification of toxicants. At the end of the TRE, LDEQ will consider all information submitted and establish appropriate controls to prevent future toxic discharges, including WET and/or chemical-specific limits per state regulations at LAC 33:IX.2707.D.1.e.

Revised 02/10/23 TABLE 1

SUMMARY

SHEET Daphnia pulex ACUTE SURVIVAL TEST RESULTS

PERMITTEE: Entergy Operations, Inc.

FACILITY SITE: River Bend Station LPDES PERMIT NUMBER: __ LA~00~4_2~73~1 _________________ _

OUTFALL IDENTIFICATION: ___ 0~0~1 _________________ _

OUTFALL SAMPLE IS FROM ____ SINGLE ______ MULTIPLE DISCHARGE BIOMONITORING LABORATORY : ____________________ _

DILUTION WATER USED: ____ RECEIVING WATER ________ LAB WATER CRITICAL DILUTION 0. 1 % DATE TEST INITIATED __________ _

1. LOW-FLOW LETHALITY:

Is the mean survival at 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months significantly less (p=0.05) than the control survival for the low flow or critical dilution? ___ Yes ___ No

DILUTION SERIES RESULTS-Daohnia TIME OF REP 0% 0.05% 0.07% 0.09% 0. 10% 0.20%

READING

24-HOUR

48-HOUR I I I I I I I I I MEAN II II I

2. Are the test results to be considered valid? ___ Yes ___ No If __K_no (test invalid), what reasons for invalidity?

3. Is this a retest of a previous invalid test? ___ Yes ___ No Is this a retest of a previous test failure? _ _ _ Yes ___ No

4. Enter percent effluent corresponding to each NOEC (No Observed Effect Concentration) for Daphnia pulex:

NOEC % EFFLUENT ---

LC so 48 % EFFLUENT ---

TABLE 1

SUMMARY

SHEET Pimephales promelas ("fathead minnow") ACUTE SURVIVAL TEST

PERMITTEE: Entergy Operations, Inc.

FACILITY SITE: River Bend Station LPDES PERMIT NUMBER :_~LA~00~4_2~73~1 _________________ _

OUTFALL IDENTIFICATION: ___ 0~0~1 _________________ _

OUTFALL SAMPLE IS FROM ____ SINGLE ______ MULTIPLE DISCHARGE BIOMONITORING LABORATORY: ___________________ _

DILUTION WATER USED : ____ RECEIVING WATER ________ LAB WATER CRITICAL DILUTION 0. 1 % DATE TEST INITIATED __________ _

1. LOW-FLOW LETHALITY:

Is the mean survival at 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months days significantly less (p=0.05) than the control survival at the low-flow or critical dilution?

___ Yes ___ No

DILUTION SERIES RES UL TS - Pimeohales TIME OF 0.05% 0.07% 0.09% 0.10% 0.20%

READING IT:] I I 24-HOUR I I I I I I I I

I I

48-HOUR I I

2. Are the test results to be considered valid? _Yes ___ No If _x_no (test invalid), what reasons for invalidity ?

3. Is this a retest of a previous invalid test? __ Yes ___ No Is this a retest of a previous test failure? __ Yes ___ No

4. Enter percent effluent corresponding to each NOEC (No Observed Effect Concentration) for Pimephales:

a. NOEC _____ % effluent

b. LCso48 ____ % effluent REVISED 8-16-2021 Page 1 of 19

STANDARD CONDITIONS FOR LPDES PERMITS

SECTION A. GENERAL CONDITIONS

1. Introduction In accordance with the provisions of LAC 33:IX.2701, et seq., this permit incorporates either expressly or by reference ALL conditions and requirements applicable to the Louisiana Pollutant Discharge Elimination System Permits (LPDES) set forth in the Louisiana Environmental Quality Act (LEQA), as amended, as well as ALL applicable regulations.

2. Duty to Comply The permittee must comply with all conditions of this permit. Any permit noncompliance constitutes a violation of the Clean Water Act (CWA) and the Louisiana Environmental Quality Act and is grounds for enforcement action; for permit termination, revocation and reissuance, or modification ; or for denial of a permit renewal application.

3. Penalties for Violation of Permit Conditions a. RS. 30 :2025 provides for civil penalties for violations of these regulations and the Louisiana Environmental Quality Act. RS. 30:2076.2 provides for criminal penalties for violation of any provisions of the LPDES or any order or any permit condition or limitation issued under or implementing any provisions of the LPDES program. (See Section E. Penalties for Violation of Permit Conditions for additional details.)

b. Any person may be assessed an administrative penalty by the state administrative authority under RS.

30:2025 for violating a permit condition or limitation implementing any of the requirements of the LPDES program in a permit issued under the regulations or the Louisiana Environmental Quality Act.

4. Toxic Pollutants a. Other effluent limitations and standards under Sections 301. 302, 303. 307. 318. and 405 of the Clean Water Act. If any applicable toxic effluent standard or prohibition (including any schedule of compliance specified in such effluent standard or prohibition) is promulgated under Section 307(a) of the Clean Water Act for a toxic pollutant, and that standard or prohibition is more stringent than any limitation on the pollutant in this permit. the state administrative authority shall institute proceedings under these regulations to modify or revoke and reissue the permit to conform to the toxic effluent standard or prohibition.

b. The permittee shalt comply with effluent standards or prohibitions established under Section 307(a) of the Clean Water Act for toxic pollutants and with standards for sewage sludge use or disposal established under Section 405(d) of the Clean Water Act within the time provided in the regulations that establish these standards or prohibitions, or standards for sewage sludge use or disposal, even if the permit has not yet been modified to incorporate the requirement.

5. Duty to Reapply a. Individual Permits. If the permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the permittee must apply for and obtain a new permit. The new application shall be submitted at least 180 days before the expiration date of the existing permit, unless permission for a later date has been granted by the state administrative authority. (The state administrative authority shall not grant permission for applications to be submitted later than the expiration date of the existing permit.) Continuation of expiring permits shall be governed by regulations promulgated at LAC 33:IX.2321 and any subsequent amendments.

b. General Permits. General permits expire five years after the effective date. The 180-day reapplication period as defined above is not applicable to general permit authorizations. Reissued general permits may provide automatic coverage for permittees authorized under the previous version of the permit, and no new application is required. Requirements for obtaining authorization under the reissued general

form_7027 r15 8-16-2021 REVISED 8-16-2021 Page 2 of 19

permit will be outlined in Part I of the new permit. Permittees authorized to discharge under an expiring general permit should follow the requirements for obtaining coverage under the new general permit to maintain discharge authorization.

6. Permit Action This permit may be modified, revoked and reissued, or terminated for cause in accordance with LAC 33:IX.2903, 2905, 2907, 3105, and 6509. The causes may include, but are not limited to, the following:

a. Noncompliance by the permittee with any condition of the permit;

b. The permittee's failure in the application or during the permit issuance process to disclose fully all relevant facts, or the permittee's misrepresentation of any relevant facts at any time;

c. A determination that the permitted activity endangers human health or the environment and can only be regulated to acceptable levels by permit modification or termination;

d. A change in any condition that requires either a temporary or a permanent reduction or elimination of any discharge;

e. Failure to pay applicable fees under the provisions of LAC 33:IX.Chapter 13; or

f. Change of ownership or operational control.

The filing of a request by the permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any permit condition.

7. Property Rights This permit does not convey any property rights of any sort, or any exclusive privilege, nor does it authorize any injury to private or public property, nor any infringement of federal, state, or local laws or regulations.

8. Duty to Provide Information The permittee shall furnish to the state administrative authority, within a reasonable time, any information which the state administrative authority may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this permit, or to determine compliance with this permit. The permittee shall also furnish to the state administrative authority, upon request, copies of records required to be kept by this permit.

9. Criminal and Civil Liability Except as provided in permit conditions on "Bypassing" and "Upsets," nothing in this permit shall be construed to relieve the permittee from civil or criminal penalties for noncompliance. Any false or materially misleading representation or concealment of information required to be reported by the provisions of the permit, the Act, or applicable regulations, which avoids or effectively defeats the regulatory purpose of the Permit may subject the permittee to criminal enforcement pursuant to RS. 30:2025.

10. Oil and Hazardous Substance Liability Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties to which the permittee is or may be subject under Section 311 of the Clean Water Act.

11. State Laws Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties established pursuant to any applicable state law or regulation under authority preserved by Section 510 of the Clean Water Act.

form_7027 _r15 8-16-2021 REVISED 8-16-2021 Page 3 of 19

12. Severability If any provision of these rules and regulations, or the application thereof, is held to be invalid, the remaining provisions of these rules and regulations shall not be affected, so long as they can be given effect without the invalid provision. To this end, the provisions of these rules and regulations are declared to be severable.

13. Dilution A permittee shall not achieve any effluent concentration by dilution unless specifically authorized in the permit. A permittee shall not increase the use of process water or cooling water or otherwise attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve permit limitations or water quality.

14. Facilities Requiring Approval from Other State Agencies In accordance with RS. 40:4(A)(6) the plans and specifications of all sewerage works, both public and private, must be approved by the Louisiana Department of Health state health officer or his designee. It is unlawful for any person, firm, or corporation, both municipal and private, to operate a sanitary sewage treatment facility without proper authorization from the state health officer.

In accordance with RS. 40:1281.9, it is unlawful for any person, firm or corporation, both municipal and private, operating a sewerage system to operate that system unless the competency of the operator is duly certified by the Louisiana Department of Health state health officer. Furthermore, it is unlawful for any person to perform the duties of an operator without being duly certified.

In accordance with RS. 48.385, it is unlawful for any industrial wastes, sewage, septic tanks effluent, or any noxious or harmful matter, solid, liquid, or gaseous to be discharged into the side or cross ditches or placed upon the rights-of-ways of state highways without the prior written consent of the Department of Transportation and Development chief engineer or his duly authorized representative and of the secretary of the Louisiana Department of Health.

15. The standards provided in Chapter 11 -Surface Water Quality Standards are official regulations of the state, and any person who discharges pollutants to the waters of the state in such quantities as to cause these standards to be violated shall be subject to the enforcement procedures of the state as specified in RS. 30:2025.

16. Preproduction Plastics In accordance with the House Concurrent Resolution No. 37 from the 2021 Regular Session, there shall be zero discharge or release of preproduction plastic into waters of the state from facilities which manufacture or manage such material. Additionally, facilities which manufacture or manage preproduction plastic must maintain a spill prevention plan onsite or at the nearest manned facility (made available to LDEQ upon request) addressing procedures to prevent and abate any release or discharge of preproduction plastic into the waters of the state.

SECTION B. PROPER OPERATION AND MAINTENANCE

1. Need to Halt or Reduce not a Defense It shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit.

2. Duty to Mitigate The permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment. The permittee shall also take all reasonable steps to minimize or correct any adverse impact on the environment resulting from noncompliance with the permit, including such accelerated or additional monitoring as necessary to determine the nature and impact of the noncomplying discharge.

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3. Proper Operation and Maintenance

a. The permittee shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality assurance procedures. This provision requires the operation of backup or auxiliary facilities or similar systems which are installed by a permittee only when the operation is necessary to achieve compliance with the conditions of the permit.

b. The permittee shall provide an adequate operating staff which is duly qualified to carry out operation, maintenance, and other functions necessary to ensure compliance with the conditions of this permit.

4. Bypass of Treatment Facilities

a. Bypass. The intentional diversion of waste streams from any portion of a treatment facility.

b. Bypass not exceeding limitations. The permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the provisions of Section B.4.c. and d of these standard conditions.

c. Notice (1) Anticipated bypass. If the permittee knows in advance of the need for a bypass, it shall submit prior notice to the Office of Environmental Services, Water Permits Division, if possible at least 10 days before the date of the bypass.

(2) Unanticipated bypass. The permittee shall submit notice of an unanticipated bypass as required in LAC 33:IX.2701.L.6 (24-hour notice) and Section D.6.e of these standard conditions.

d. Prohibition of bypass (1) Bypass is prohibited, and the state administrative authority may take enforcement action against a permittee for bypass, unless:

(a) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage;

(b) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate backup equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventive maintenance; and

(c) The permittee submitted notices as required by Section B.4.c of these standard conditions.

(2) The state administrative authority may approve an anticipated bypass after considering its adverse effects, if the state administrative authority determines that it will meet the three conditions listed in Section B.4.d(1) of these standard conditions.

5. Upset Conditions

a. Upset. An exceptional incident in which there is unintentional and temporary noncompliance with technology-based permit effluent limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation.

b. Effect of an upset. An upset constitutes an affirmative defense to an action brought for noncompliance with such technology-based permit effluent limitations if the requirements of Section B.5.c are met. No

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determination made during administrative review of claims that noncompliance was caused by an upset, and before an action for noncompliance, constitutes final administrative action subject to judicial review.

c. Conditions necessary for a demonstration of upset. A permittee who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or other relevant evidence that:

( 1) An upset occurred and that the permittee can identify the cause( s) of the upset;

(2) The permitted facility was at the time being properly operated;

(3) The permittee submitted notice of the upset as required by LAC 33 :IX.2701.L.6.b.ii and Section D.6.e(2) of these standard conditions ; and

(4) The permittee complied with any remedial measures required by Section B.2 of these standard conditions.

d. Burden of proof. In any enforcement proceeding, the permittee seeking to establish the occurrence of an upset has the burden of proof.

6. Removed Substances Solids, sewage sludges, filter backwash, or other pollutants removed in the course of treatment or wastewater control shall be properly disposed of in a manner such as to prevent any pollutant from such materials from entering waters of the state and in accordance with environmental regulations.

7. Percent Removal For Publicly Owned Treatment Works (POTWs), the 30-day average percent removal for Biochemical Oxygen Demand and Total Suspended Solids shall not be less than 85 percent in accordance with LAC 33:IX.5905.A.3 and B.3. POTWs utilizing waste stabilization ponds/oxidation ponds are not subject to the 85 percent removal rate for Total Suspended Solids.

SECTION C. MONITORING AND RECORDS

1. Inspection and Entry The permittee shall allow the state administrative authority or an authorized representative (including an authorized contractor acting as a representative of the Administrator), upon the presentation of credentials and other documents as may be required by the law to :

a. Enter upon the permittee's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this permit.

Enter upon the permittee's premises where a discharge source is or might be located or in which monitoring equipment or records required by a permit are kept for inspection or sampl ing purposes.

Most inspections will be unannounced and should be allowed to begin immediately, but in no case shall begin more than 30 minutes after the time the inspector presents his/her credentials and announces the purpose(s) of the inspection. Delay in excess of 30 minutes shall constitute a violation of this permit.

However, additional time can be granted if the inspector or the administrative authority determines that the circumstances warrant such action;

b. Have access to and copy, at reasonable times, any records that the department or its authorized representative determines are necessary for the enforcement of this permit. For records maintained in either a central or private office that is open only during normal office hours and is closed at the time of inspection, the records shall be made available as soon as the office is open, but in no case later than the close of business the next working day ;

c. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment),

practices, or operations regulated or required under this permit; and form_7027 _r15 8-16-2021 REVISED 8-16-2021 Page 6 of 19

d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise authorized by the Clean Water Act or the Louisiana Environmental Quality Act, any substances or parameters at any location.

e. Sample Collection (1) When the inspector announces that samples will be collected, the permittee may be given an additional 30 minutes to prepare containers in order to collect duplicates. If the permittee cannot obtain and prepare sample containers within this time, he is considered to have waived his right to collect duplicate samples and the sampling will proceed immediately. Further delay on the part of the permittee in allowing initiation of the sampling will constitute a violation of this permit.

(2) At the discretion of the administrative authority, sample collection shall proceed immediately (without the additional 30 minutes described in Section C.1.a above), and the inspector shall supply the permittee with a duplicate sample.

f. It shall be the responsibility of the permittee to ensure that a facility representative familiar with provisions of its wastewater discharge permit, including any other conditions or limitations, be available either by phone or in person at the facility during all hours of operation. The absence of such personnel on-site who are familiar with the permit shall not be grounds for delaying the initiation of an inspection except in situations as described in Section C.1.b of these standard conditions. The permittee shall be responsible for providing witnesses/escorts during inspections. Inspectors shall abide by all company safety rules and shall be equipped with standard safety equipment (hard hat, safety shoes, safety glasses) normally required by industrial facilities.

g. Upon written request, copies of field notes, drawings, etc., taken by department personnel during an inspection shall be provided to the permittee after the final inspection report has been completed.

2. Representative Sampling Samples and measurements taken for the purpose of monitoring shall be representative of the monitored activity. All samples shall be taken at the outfall location(s) indicated in the permit. The state administrative authority shall be notified prior to any changes in the outfall location(s). Any changes in the outfall location(s) may be subject to modification, revocation, and reissuance in accordance with LAC 33 :IX.2903.

3. Retention of Records Except for records of monitoring information required by this permit related to the permittee's sewage sludge use and disposal activities, which shall be retained for a period of at least five years (or longer, as required by 40 CFR 503), the permittee shall retain records of all monitoring information, including all calibration and ma intenance records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports required by this permit, and records of all data used to complete the application for this permit, for a period of at least 3 years from the date of the sample, measurement, report, or application. This period may be extended by request of the state administrative authority at any time.

4. Record Contents Records of monitoring information shall include :

a. The date, exact place, and time of sampling or measurements;

b. The individual(s) who performed the sampling or measurements; c. The date(s) analyses were performed; d. The time(s) analyses were begun ;

e. The individual(s) who performed the analyses; f. The analytical techniques or methods used ;

g. The results of such analyses; and

h. The results of all quality control procedures.

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5. Monitoring Procedures

a. Measurements and analyses must be conducted according to test procedures approved under 40 CFR Part 136 or, in the case of sludge use or disposal, approved under 40 CFR Part 136 unless otherwise specified in 40 CFR Part 503, unless other test procedures have been specified in this permit.

b. The permittee shall calibrate and perform maintenance procedures on all monitoring and analytical instruments at intervals frequent enough to ensure accuracy of measurements and shall maintain appropriate records of such activities.

c. The permittee or designated laboratory shall have an adequate analytical quality assurance/quality control program to produce defensible data of known precision and accuracy. All quality control measures shall be assessed and evaluated on an ongoing basis, and quality control acceptance criteria shall be used to determine the validity of the data. All method-specific quality controls as prescribed in the method shall be followed. If quality control requirements are not included in the method, the permittee or designated laboratory shall follow the quality control requirements as prescribed in the Approved Edition (40 CFR Part 136) Standard Methods for the Examination of Water and Wastewater, Sections 1020A and 1020B. General sampling protocol shall follow guidelines established in the Handbook for Sampling and Sample Preservation of Water and Wastewater, 1982 U.S. Environmental Protection Agency. This publication is available from the National Service Center for Environmental Publications https ://nepis.epa. gov/Exe/ZyNET. exe/30000QSA TXT? Zy ActionD= ZyDocument&C lient= EP A&I ndex= 19 81 + Thru+ 1985&Docs=&Query=& Time=&EndTime=&SearchMethod= 1 & TocRestrict=n& Toe=& TocEntry=

&QField=&QFieldYear=&OFieldMonth=&OFieldDay=&lrtOFieldOp=0&ExtQFieldOo=0&XmlOuery=&Fil e=D%3A%5Czyfiles%5Clndex%20Data%5C81thru85%5CTxt'%5C00000001 %5C30000QSA.txt&User=

ANONYMOUS&Password=anonymous&SortMethod=h% 7C-& MaximumDocuments= 1 &F uzzyDeqree=0

&lmageQuality=r75g8/r75g8/x150y150g16/i425&Display=hpfr&DefSeekPage=x&SearchBack=ZyAction L&Back =Zy Action S&BackDesc= Results%20page&Maxin w m P aaes= 1 &ZyEntry= 1 & Seek P age=x&Zy PU RL

6. Flow Measurements Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges. The devices shall be installed, calibrated, and maintained to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a maximum deviation of less than 10 percent from true discharge rates throughout the range of expected discharge volumes and shall be calibrated by a qualified source at least once a year to ensure their accuracy. A qualified source is a person that has received formal training and/or has practical field experience in the calibration of the flow measurement device used at the facility.

Guidance in selection, installation, calibration, and operation of acceptable flow measurement devices can be obtained from the following references:

a. A Guide to Methods and Standards for the Measurement of Water Flow, 1975, U.S. Department of Commerce, National Bureau of Standards. This publication is available from the National Technical Information Service (NTIS), Springfield, VA 22161, and telephone number (800) 553-6847. Order by NTIS publication number COM-75-10683.

https:/ /www. qovi nfo. gov/content/pkg/GO VP U B-C 1 3-a301 a 5f6bf6ec3 7 8b4 fabc9c626c0 3e2/pdf /GOVP U B

-C13-a301 a5f6bf6ec378b4fabc9c626c03e2 pdf

b. Flow Measurement in Open Channels and Closed Conduits, Volumes 1 and 2 U.S. Department of Commerce, National Bureau of Standards. This publication is available from the National Technical Service (NTIS), Springfield, VA, 22161, and telephone number (800) 553-6847. Order by NTIS publication number PB-273 535.

Volume 1:

https://www.govinfo.gov/content/pkg/GOVPUB-C13-c0f8a094b9fcc5c32be685edbd48f942/pdf/GOVPUB

-C 13 -c0f8a094b9fcc5c32be685edbd48f942. pdf.

form_7027 _r15 8-16-2021 REVISED 8-16-2021 Page 8 of 19

Volume 2 :

https: //www. qovi nfo. qov/content/pkg/GOVP U B-C 13-b3daf 36f 1 cc0f770bc04d66da5cdc93 7 /pdf / GOVP U B

-C13-b3daf36f1 cc0f770bc04d66da5cdc937 pdf

c. NPDES Compliance Flow Measurement Manual, U.S. Environmental Protection Agency, Office of Water Enforcement. This publication is available from the National Technical Information Service (NTIS),

Springfield, VA 22161, and telephone number (800) 553-6847. Order by NTIS publication number PB-82-131178.

https://nepis.epa.qov/Exe/ZyNET.exe/9101 TZLK. TXT?ZyActionO=ZyOocument&Client= EPA& Index= 19 81 + Thru+1985&Docs=&Query=& Time=&EndTirne=&SearchMethod= 'I & TocRestrict=n& Toe=& TocEntry=

&QField=&QFieldYear=&OFieldMonth=&QF *eldDay=&lrtOFieldOp=0&ExtOFieldOp=0&XmlQue1y=&Fil e=D%3A %5Czyf11es%5Clndex%20Data%5C81thru85%5CTxt%5C00000026%5C9101 TZLK. txt&User=A NONY MOU S&Password=anonymous&SortM et hod= h% -; C-& M aximu 111 Oocu ments= 1 &F uzzyDeq ree=0& I mageQ ua I ity= r7 5g 8/r7 5g8/x 150y 150g 16/i425&O1splay =h pfr &DefSeek P age=x& Search Back=ZyAction L&

Back=ZyAct1on S&BackDesc= Results %20paqe&MaximumPaqes= 1 &ZyEntry= 1 &SeekPaqe=x&ZyP URL

7. Prohibition for Tampering: Penalties

a. RS. 30:2025 provides for punishment of any person who falsifies, tampers with, or knowingly renders inaccurate any monitoring device or method required to be maintained under this permit.

b. RS. 30:2076.2 provides for penalties for any person who knowingly makes any false statement, representation, or certification in any record or other document submitted or required to be maintained under this permit, including monitoring reports or reports of compliance or noncompliance.

8. Additional Monitoring by the Permittee If the permittee monitors any pollutant more frequently than required by the permit using test procedures approved under 40 CFR Part 136 (see LAC 33:IX.4901 ), or in the case of sludge use and disposal, approved under 40 CFR Part 136 (see LAC 33:IX.4901) unless otherwise specified in 40 CFR Part 503, or as specified in the permit, the results of this monitoring shall be included in the calculation and reporting of the data submitted in the DMR or sludge reporting form specified by the state administrative authority.

9. Averaging of Measurements Calculations for all limitations which require averaging of measurements shall utilize an arithmetic mean unless otherwise specified by the state administrative authority in the permit.

10. Laboratory Accreditation

a. LAC 33 :1.Subpart 3, Chapters 45-59 provide requirements for an accreditation program specifically applicable to commercial laboratories, wherever located, that provide chemical analyses, analytical results, or other test data to the department, by contract or by agreement, and the data is:

(1) Submitted on behalf of any facility, as defined in RS. 30:2004; (2) Required as part of any permit application; (3) Required by order of the department; (4) Required to be included on any monitoring reports submitted to the department; (5) Required to be submitted by contractor; and/or (6) Otherwise required by department regulations.

b. The department laboratory accreditation program, Louisiana Environmental Laboratory Accreditation Program (LELAP) is designed to ensure the accuracy, precision, and reliability of the data generated, as well as the use of department-approved methodologies in generation of that data. Laboratory data generated by commercial environmental laboratories that are not LELAP-accredited will not be accepted by the department. Retesting of analysis by an accredited commercial laboratory will be required.

Where retesting of effluent is not possible (for example, data reported on DMRs for prior month's sampling), the data generated will be considered invalid and in violation of the LPDES permit.

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c. Regulations on the Louisiana Environmental Laboratory Accreditation Program and a list of labs that have applied for accreditation are available on the department website located under LDEQ About LDEQ Public Participation and Permit Support LA Lab Accreditation at the following link:

http //deg. louisia na. qov/page/la-lab-accred itation

Questions concerning the program may be directed to (225) 219-3247.

SECTION D. REPORTING REQUIREMENTS

1. Facility Changes The permittee shall give notice to the state administrative authority as soon as possible of any planned physical alterations or additions to the permitted facility. Notice is required only when :

a. The alteration or addition to a permitted facility may meet one of the criteria for determining whether a facility is a new source in 40 CFR 122.29(b) ; or

b. The alteration or addition could significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants which are subject neither to effluent limitations in the permit nor to notification requirements under LAC 33 :IX.2703.A.1.

c. For Municipal Permits. Any new introduction of pollutants into the POTW from an indirect discharger which would be subject to Section 301 or 306 of the CWA if it were directly discharging those pollutants, and any substantial change in the volume or character of pollutants being introduced into that POTW by a source introducing pollutants into the POTW at the time of issuance of the permit. In no case are any new connections, increased flows, or significant changes in influent quality permitted that will cause violation of the effluent limitations specified herein.

2. Anticipated Noncompliance The permittee shall give advance notice to the state administrative authority of any planned changes in the permitted facility or activity which may result in noncompliance with perm it requirements.

3. Transfers This permit is not transferable to any person except after notice to the state administrative authority. The state administrative authority may require modification or revocation and reissuance of the permit to change the name of the permittee and incorporate such other requirements as may be necessary under the Clean Water Act or the Louisiana Environmental Quality Act. (See LAC 33 : IX.2901; in some cases, modification or revocation and reissuance is mandatory.)

A permit may be transferred by the perm ittee to a new owner or operator only if: (1) the permit has been modified or revoked and reissued (under LAC 33 :IX.2903.A.2.b) by the permittee and new owner submitting a Name/Ownership/Operator Change Form (NOC-1 Form) and approved by LDEQ (LAC 33:1.Chapter 19);

or (2) a minor modification made (under LAC 33 :IX.2905) to identify the new permittee and incorporate such other requirements as may be necessary under the Clean Water Act and the Louisiana Environmental Quality Act.

The NOC-1 form can be found using the pathway LDEQ Water LPDES Application Forms at the following link : http //deg louisiana qov/page/lpdes-water-perri 1ts

4. Monitoring Reports Monitoring results shall be reported at the intervals specified elsewhere in this permit and shall be submitted through a department-approved electronic document receiving system (NetDMR) in accordance with LAC 33 :1.Chapter 21 unless the state administrative authority gives written authorization to the permittee to submit monitoring results in an alternative format such as paper DMRs.

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Information about NetDMR and gaining access can be viewed using the pathway LDEQ Water Enforcement NETDMR on the department's website at: http //deg louisiana.qov/page/netdmr

The permittee shall submit properly completed Discharge Monitoring Reports (DMRs) using the format specified in the permit.

If authorized to report using an alternative format such as paper DMRs, then preprinted DMRs will be provided to majors and other designated facilities. Please contact the Permit Compliance Unit concerning preprints. Self-generated DMRs must be pre-approved by the Permit Compliance Unit prior to submittal.

Self-generated DMRs are approved on an individual basis. Requests for approval of self-generated DMRs should be submitted to the following address :

Supervisor, Permit Compliance Unit Office of Environmental Compliance Post Office Box 4312 Baton Rouge, LA 70821-4312

5. Compliance Schedules Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this permit shall be submitted no later than 14 days following each schedule date.

6. Requirements for Notification

a. Emergency Notification As required by LAC 33.1.3915, in the event of an unauthorized discharge that causes an emergency condition, the discharger shall notify the hotline (Department of Public Safety (DPS) 24-hour Louisiana Emergency Hazardous Materials Hotline) by telephone at (225) 925-6595 (collect calls accepted 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months a day) immediately (a reasonable period of time after taking prompt measures to determine the nature, quantity, and potential off-site impact of a release, considering the exigency of the circumstances), but in no case later than one hour after learning of the discharge. (An emergency condition is any condition which could reasonably be expected to endanger the health and safety of the public, cause significant adverse impact to the land, water, or air environment, or cause severe damage to property.) Notification required by this section will be made regardless of the amount of discharge.

Prompt Notification Procedures are listed in Section D.6.c of these standard conditions.

A written report shall be provided within seven calendar days after the notification. The report shall contain the information listed in Section D.6.d of these standard conditions and any additional information in LAC 33 :1.3925.B.

b. Prompt Notification As required by LAC 33 :1.3917, in the event of an unauthorized discharge that exceeds a reportable quantity specified in LAC 33 :1.Chapter 39.Subchapter E, but does not cause an emergency condition, the discharger shall promptly notify DPS by telephone at (225) 925-6595 (collect calls accepted 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months a day) within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after learning of the discharge.

In the event of an unauthorized discharge that requires notification, the DPS 24-hour Louisiana Emergency Hazardous Materials Hotline will notify the Department of Environmental Quality.

In accordance with LAC 33 :1.3923, notifications not required by LAC 33 :1.3915 or 3917 shall be provided to the department within a time frame not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , or as specified by the specific regulation or permit provision requiring the notification, and shall be given to Single Point of Contact (SPOC), as follows :

(1) by the Online Incident Reporting screens found at httpi/deq.louisiana.govlpageifile-a-comolaint-report-an-incident ; or

form_7027 _r15 8-16-2021 REVISED 8-16-2021 Page 11 of 19

(2) by email utilizing the Incident Report Form and instructions found at https ://www.deq.louisiana.gov/index cfm?md=pagetu1 1de r&tmp=home&p1d=s1ngle-point-of-contact ;

or (3) by telephone at (225) 219-3640 during office hours, or (225) 342-1234 after hours and on weekends and holidays.

c. Content of Prompt Notifications The following guidelines will be utilized as appropriate, based on the conditions and circumstances surrounding any unauthorized discharge, to provide relevant information regardi ng the nature of the discharge :

(1) the name of the person making the notification and the telephone number where any return calls from response agencies can be placed ;

(2) the name and location of the facility or site where the unauthorized discharge is imminent or has occurred, using common landmarks. In the event of an incident involving transport, include the name and address of the transporter and generator ;

(3) the date and time the incident began and ended, or the estimated time of continuation if the discharge is continuing ;

(4) the extent of any injuries and identification of any known personnel hazards that response agencies may face; (5) the common or scientific chemical name, the U.S. Department of Transportation hazard classification, and the best estimate of amounts of any and all discharged pollutants; and (6) a brief description of the incident sufficient to allow response agencies to formulate their level and extent of response activity.

d. Written Notification Procedures Written reports for any unauthorized discharge that requires notification under Section D.6.a or b, shall be submitted by the discharger to the Office of Environmental Compliance, Emergency and Radiological Services Division - SPOC in accordance with LAC 33 :1.3925 within seven calendar days after the notification required by D.6.a or 6.b, unless otherwise provided for in a valid permit or other department regulation. Written notification reports shall include, but not be limited to, the following information:

(1) the name, address, telephone number, Agency Interest (Al) number (number assigned by the department) if applicable, and any other applicable identification numbers of the person, company, or other party who is filing the written report, and specific identification that the report is the written follow-up report required by this section ;

(2) the time and date of prompt notification, the state official contacted when reporting, the name of person making that notification, identification of the site or facility, vessel, transport vehicle, or storage area from which the unauthorized discharge occurred, and the location where the incident occurred ;

(3) date(s), time(s), and duration of the unauthorized discharge and, if not corrected, the anticipated time it is expected to continue; (4) details of the circumstances (unauthorized discharge description and root cause) and events leading to any unauthorized discharge, including incidents of loss of sources of radiation, and if the release point is subject to a permit:

(a) the current permitted limit for the pollutant(s) released; and (b) the permitted release point/outfall ID (5) the common or scientific chemical name of each specific pollutant that was released as the result of an unauthorized discharge, including the CAS number and U.S. Department of Transportation hazard classification, and the best estimate of amounts of any and all released pollutants (total amount of each compound expressed in pounds, including calculations) ;

(6) a statement of the actual or probable fate or disposition of the pollutant or source of radiation and what off-site impact resulted; and (7) remedial actions taken, or to be taken, to stop unauthorized discharges or to recover pollutants or sources of radiation.

Written notification reports shall be submitted to the Office of Environmental Compliance, SPOC by mail or e-mail. The transmittal envelope and report or e-mail subject line and report should be clearly marked "UNAUTHORIZED DISCHARGE NOTIFICATION REPORT."

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Written reports (LAC 33 :1.3925) should be mailed to :

Louisiana Department of Environmental Quality Post Office Box 4312 Baton Rouge, LA 70821-4312 ATTENTION : OFFICE OF ENVIRONMENTAL COMPLIANCE-SPOC "UNAUTHORIZED DISCHARGE NOTIFICATION REPORT"

The Written Notification Report may be emailed to the Louisiana Department of Environmental Quality,

Office of Environmental Compliance, S ingle Point of Contact at: writtennotificationLDEQ(ci)la gov.

Please see LAC 33:1.3925.B for additional written notification procedures.

e. Twenty-four Hour Reporting The permittee shall report any noncompliance which may endanger human health or the environment. Any information shall be provided orally within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months from the time the permittee becomes aware of the circumstances. A written submission shall also be provided within five days of the time the permittee becomes aware of the circumstances. The written submission shall contain a description of the noncompliance and its cause; the period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue ; and steps taken or planned to reduce, eliminate, and prevent recurrence of the noncompliance. The following shall be included as information which must be reported within 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months s:

(1) Any unanticipated bypass which exceeds any effluent limitation in the permit (see LAC 33 :IX.2701.M.3.b);

(2) Any upset which exceeds any effluent limitation in the permit ; and/or

(3) Violation of a maximum daily discharge limitation for any of the pollutants listed by the state administrative authority in Part II of the permit to be reported within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months (LAC 33:IX.2707.G).

7. Other Noncompliance The permittee shall report all instances of noncompliance not reported under Section D.4, 5, and 6, at the time monitoring reports are submitted. The reports shall contain the information listed in Section D.6.e.

8. Other Information Where the permittee becomes aware that it failed to submit any relevant facts in a permit application, or submitted incorrect information in a permit application or in any report to the state administrative authority, it shall promptly submit such facts or information.

9. Discharges of Toxic Substances In addition to the reporting requirements under Section D.1-8, all existing manufacturing, commercial, mining, and silvicultural dischargers must notify the Office of Environmental Services, Water Permits Division as soon as they know or have reason to believe :

a. That any act ivity has occurred or will occur which would result in the discharge, on a routine or frequent basis, of any toxic pollutant:

(1) listed at LAC 33 :IX.7107, Tables II and Ill (excluding Total Phenols) which is not limited in the permit, if that discharge will exceed the highest of the following notification levels :

(a) One hundred micrograms per liter (100 µg/L) ;

(b) Two hundred micrograms per liter (200 µg/L) for acrolein and acrylonitrile ; five hundred micrograms per liter (500 µg/L) for 2,4-dinitrophenol and for 2-methyl-4,6-dinitrophenol; and one milligram per liter (1 mg/L) for antimony; (c) Five (5) times the maximum concentration value reported for that pollutant in the permit application in accordance with LAC 33 :IX.2501.G.7; or (d) The level established by the state administrative authority in accordance with LAC 33 :IX.2707.F; or form_7027 _r15 8-16-2021 REVISED 8-16-2021 Page 13 of 19

(2) which exceeds the reportable quantity levels for pollutants at LAC 33:1.Chapter 39.Subchapter E.

b. That any activity has occurred or will occur which would result in any discharge, on a non-routine or infrequent basis, of a toxic pollutant:

(1) listed at LAC 33:IX.7107, Tables II and Ill (excluding Total Phenols) which is not limited in the permit, if that discharge will exceed the highest of the following "notification levels":

(a) Five hundred micrograms per liter (500 µg/L) ;

(b) One milligram per liter (1 mg/L) for antimony ;

(c) Ten (10) times the maximum concentration value reported for that pollutant in the permit application in accordance with LAC 33 :IX.2501.G.7; or (d) The level established by the state administrative authority in accordance with LAC 33 :IX.2707.F ; or

(2) which exceeds the reportable quantity levels for pollutants at LAC 33 :1.Chapter 39.Subchapter E.

10. Signatory Requirements All applications, reports, or information submitted to the state administrative authority shall be signed and certified.

a. All permit applications shall be signed as follows :

(1) For a corporation-by a responsible corporate officer. For the purpose of this section, a responsible corporate officer means :

(a) A president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision making functions for the corporation ; or,

(b) The manager of one or more manufacturing, production, or operating facilities, provided : the manager is authorized to make management decisions that govern the operation of the regulated facil ity, including having the explicit or implicit duty of making major capital investment recommendations and initiating and directing other comprehensive measures to ensure long term environmental compliance with environmental laws and regulations ; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements ; and the authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures.

NOTE: The department does not require specific assignments or delegations of authority to responsible corporate officers identified in Section D.1 0.a(1 )(a). The agency will presume that these responsible corporate officers have the requisite authority to sign permit applications unless the corporation has notified the state administrative authority to the contrary. Corporate procedures governing authority to sign permit applications may provide for assignment or delegation to applicable corporate positions under Section D.1 0.a(1 )(b) rather than to specific ind ividuals.

(2) For a partnership or sole proprietorship---by a general partner or the proprietor, respectively ; or (3) For a municipality, state. federal, or other public agency-by either a principal executive officer or ranking elected offic ial. For purposes of this section, a principal executive officer of a federal agency includes:

(a) The chief executive officer of the agency, or (b) A senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency (for example, Regional Administrators of EPA).

b. All reports required by permits and other information requested by the state administrative authority shall be signed by a person described in Section D.1 0.a, or by a duly authorized representative of that person. A person is a duly authorized representative only if:

(1) The authorization is made in writing by a person described in Section D.1 0.a of these standard conditions ;

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(2) The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company, (a duly authorized representative may thus be either a named individual or an individual occupying a named position) ;

and, (3) The written authorization is submitted to the state administrative authority.

c. Changes to authorization. If an authorization under Section D.1 0.b is no longer accurate because a different individual or position has responsibility for the overall operation of the facility, a new authorization satisfying the requirements of Section D.1 0.b must be submitted to the state administrative authority prior to or together with any reports, information, or applications to be signed by an authorized representative.

d. Certification. Any person signing a document under Section D.1 0.a orb above, shall make the following certification:

"I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations."

11. Availability of Reports All recorded information (completed permit application forms, fact sheets, draft permits, or any public document) not classified as confidential information under RS. 30:2030(A) and 30 :2074(0) and designated as such in accordance with these regulations (LAC 33 :IX.2323 and LAC 33 :IX.6503) shall be made available to the public for inspection and copying during normal working hours in accordance with the Public Records Act, RS. 44 :1 et seq.

Claims of confidentiality for the following will be denied :

a. The name and address of any permit applicant or permittee; or

b. Permit applications, permits, and effluent data.

Information required by LPDES application forms provided by the state administrative authority under LAC 33:IX.2501 may not be claimed confidential. This includes information submitted on the forms themselves and any attachments used to supply information required by the forms.

SECTION E. PENALTIES FOR VIOLATIONS OF PERMIT CONDITIONS

1. Criminal

a. Negligent Violations RS. 30:2076.2 provides that any person who negligently violates any provision of the LPDES, or any order issued by the secretary under the LPDES, or any permit condition or limitation implementing any such provision in a permit issued under the LPDES by the secretary, or any requirement imposed in a pretreatment program approved under the LPDES is subject to a fine of not less than $2,500 nor more than $25,000 per day of violation, or by imprisonment for not more than one year, or both. If a conviction of a person is for a violation committed after a first conviction of such person, he shall be subject to a fine of not more than $50,000 per day of violation, or imprisonment of not more than two years, or both.

b. Knowing Violations RS. 30:2076.2 provides that any person who knowingly violates any provision of the LPDES, or any permit condition or limitation implementing any such provisions in a permit issued under the LPDES, or form_7027 r15 8-16-2021 REVISED 8-16-2021 Page 15 of 19

any requirement imposed in a pretreatment program approved under the LPDES is subject to a fine of not less than $5,000 nor more than $50,000 per day of violation, or imprisonment for not more than three years, or both. If a conviction of a person is for a violation committed after a first conviction of such person, he shall be subject to a fine of not more than $100,000 per day of violation, or imprisonment of not more than six years, or both.

c. Knowing Endangerment RS. 30 :2076.2 provides that any person who knowingly violates any provision of the LPDES, or any order issued by the secretary under the LPDES, or any permit condition or limitation implementing any of such provisions in a permit issued under the LPDES by the secretary, and who knows at that time that he thereby places another person in imminent danger of death or serious bodily injury, shall, upon conviction, be subject to a fine of not more than $250,000, or by imprisonment for not more than 15 years, or both. A person which is an organization shall, upon conviction of violating this Paragraph, be subject to a fine of not more than one million dollars. If a conviction of a person is for a violation committed after a first conviction of such person under this Paragraph, the maximum punishment shall be doubled with respect to both fine and imprisonment.

d. False Statements RS. 30 :2076.2 provides that any person who knowingly makes any false material statement, representation, or certification in any application, record, report, plan, or other document filed or required to be maintained under the LPDES or who knowingly falsifies, tampers with, or renders inaccurate any monitoring device or method required to be ma intained under the LPDES, shall, upon conviction, be subject to a fine of not more than $10,000, or imprisonment for not more than two years, or both. If a conviction of a person is for a violation committed after a first conviction of such person under this Subsection, he shall be subject to a fine of not more than $20,000 per day of violation, or imprisonment of not more than four years, or both.

2. Civil Penalties RS. 30 :2025 provides that any person found to be in violation of any requirement of this Subtitle may be liable fo r a civil penalty, to be assessed by the secretary, an assistant secretary, or the court, of not more than the cost to the state of any response action made necessary by such violation which is not voluntarily paid by the violator, and a penalty of not more than $32,500 for each day of violation. However, when any such violation is done intentionally, willfully, or knowingly, or results in a discharge or disposal which causes irreparable or severe damage to the environment or if the substance discharged is one which endangers human life or health, such person may be liable for an additional penalty of not more than one million dollars.

(PLEASE NOTE : These penalties are listed in their entirety in Subtitle II of Title 30 of the Louisiana Revised Statutes.)

SECTION F. DEFINITIONS

All definitions contained in Section 502 of the Clean Water Act shall apply to this permit and are incorporated herein by reference. Additional definitions of words or phrases used in this permit are as follows :

1. Clean Water Act (CWA) means the Public Law 92-500 as amended by Pub. L.95-217, Pub. L.95-576, Pub.

L.96-483 and Pub. L.97-117, 33 U.S.C. 1251 et seq. The CWA was formerly referred to as the Federal Water Pollution Control Act or Federal Water Pollution Control Act Amendments of 1972.

2. Accreditation means the formal recognition by the department of a laboratory ' s competence wherein specific tests or types of tests can be accurately and successfully performed in compliance with all minimum requirements set forth in the regulations regarding laboratory accreditation.

3. Administrator means the Administrator of the U.S. Environmental Protection Agency, or an authorized representative.

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4. Applicable Standards and Limitations means all state, interstate and federal standards and limitations to which a discharge is subject under the Clean Water Act, including effluent limitations, water quality standards of performance, toxic effluent standards or prohibitions, best management practices, and pretreatment standards under Sections 301, 302, 303, 304, 306, 307, 308, and 403.

5. Applicable water quality standards means all water quality standards to which a discharge is subject under the Clean Water Act.

6. Commercial Laboratory means any laboratory, wherever located, that performs analyses or tests for third parties for a fee or other compensation and provides chemical analyses, analytical results, or other test data to the department. The term commercial laboratory does not include laboratories accredited by the Louisiana Department of Health in accordance with R.S. 49 :1001 et seq.

7. Daily Discharge means the discharge of a pollutant measured during a calendar day or any 24-hour period that reasonably represents the calendar day for purposes of sampling. For pollutants with limitations expressed in terms of mass, the daily discharge is calculated as the total mass of the pollutant discharged over the sampling day. For pollutants with limitations expressed in other units of measurement, the daily discharge is calculated as the average measurement of the pollutant over the sampling day. Daily discharge determination of concentration made using a composite sample shall be the concentration of the composite sample.

8. Daily Maximum discharge limitation means the highest allowable "daily discharge."

9. Director means the U.S. Environmental Protection Agency Regional Administrator, or the state administrative authority, or an authorized representative.

10. Domestic septage means either liquid or solid material removed from a septic tank, cesspool, portable toilet,

Type Ill marine sanitation device, or similar treatment works that receives only domestic sewage. Domestic septage does not include liquid or solid material removed from a septic tank, cesspool, or similar treatment works that receives either commercial wastewater or industrial wastewater and does not include grease removed from grease trap at a restaurant.

11. Domestic sewage means waste and wastewater from humans or household operations that is discharged to or otherwise enters a treatment works.

12. Environmental Protection Agency (or EPA) means the U.S. Environmental Protection Agency.

13. Grab sample means an individual sample collected over a period of time not exceeding 15 minutes, unless more time is needed to collect an adequate sample, and is representative of the discharge.

14. Industrial user means a nondomestic discharger, as identified in 40 CFR 403, introducing pollutants to a Publicly Owned Treatment Works.

15. LEQA means the Louisiana Environmental Quality Act.

16. Loading is presented in the permit and reported in the DMR as the total amount of a pollutant entering the facility or discharged in the effluent. It is calculated by knowing the amount of flow, the concentration, and the density of water. Results should be rounded off and expressed with the same number of significant figures as the permit limit. If the permit does not explicitly state how many significant figures are associated with the permit limit, the permittee shall use two.

Loading (lbs/day)= Flow (in MGD) x Concentration (mg/L) x 8.34*

8.34 is the unit conversion for the weight of water

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17. Louisiana Pollutant Discharge Elimination System (LPDES) means those portions of the Louisiana Environmental Quality Act and the Louisiana Water Control Law and all regulations promulgated under their authority which are deemed equivalent to the National Pollutant Discharge Elimination System (NPDES) under the Clean Water Act in accordance with Section 402 of the Clean Water Act and all applicable federal regulations.

18. Monthly Average discharge limitations (other than for bacteria indicators, such as fecal coliform and enterococci) are calculated as the sum of all "daily discharge(s)" measured during a calendar month divided by the number of "daily discharge(s)" measured during that month. When the permit establishes monthly average concentration effluent limitations or cond itions, and flow is measured as continuous record or with a totalizer, the monthly average concentration means the arithmetic average (weighted by flow) of all "daily discharge(s)" of concentration determined during the calendar month where C = daily discharge concentration, F = daily flow and n = number of daily samples; monthly average discharge =

C1F1 + C2F2 +... + CnFn F1 + F2 +... + Fn

When the permit establishes monthly average concentration effluent limitations or conditions, and the flow is not measured as a continuous record, then the monthly average concentration means the arithmetic average of all "daily discharge(s)" of concentration determined during the calendar month.

The monthly average for bacteria indicators is the geometric mean of the values for all effluent samples collected during a calendar month.

19. National Pollutant Discharge Elimination System (NPDES) means the national program for issuing,

modifying, revoking and reissuing, terminating, monitoring and enforcing permits, and imposing and enforcing pretreatment requirements, under Sections 307, 318, 402, and 405 of the Clean Water Act.

20. POTW means Publicly Owned Treatment Works.

21. Sanitary Wastewater Term(s) :

a. 3-hour composite sample consists of three effluent portions collected no closer together than one hour (with the first portion collected no earlier than 10:00 a.m.) over the 3-hour period and composited according to flow, or a sample continuously collected in proportion to flow over the 3-hour period.

b. 6-hour composite sample consists of six effluent portions collected no closer together than one hour (with the first portion collected no earlier than 10 :00 a.m.) over the 6-hour period and composited according to flow, or a sample continuously collected in proportion to flow over the 6-hour period.

c. 12-hour composite sample consists of 12 effluent portions collected no closer together than one hour over the 12-hour period and composited according to flow, or a sample continuously collected in proportion to flow over the 12-hour period. The daily sampling intervals shall include the highest flow periods.

d. 24-hour composite sample consists of a minimum of 12 effluent portions collected at equal time intervals over the 24-hour period and combined proportional to flow or a sample continuously collected in proportion to flow over the 24-hour period.

22. Severe property damage means substantial phys ical damage to property, damage to the treatment facilities that causes them to become inoperable, or substantial and permanent loss of natural resources that can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production.

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23. Sewage sludge means any solid, semisolid, or liquid residue removed during the treatment of municipal wastewater or domestic sewage. Sewage sludge includes, but is not limited to, solids removed during primary, secondary, or advanced wastewater treatment, scum, domestic septage, portable toilet pumpings,

Type Ill marine sanitation device pumpings (33 CFR Part 159), and sewage sludge products. Sewage sludge does not include grit or screenings, or ash generated during the incineration of sewage sludge.

24. Stormwater Runoff means aqueous surface runoff including any soluble or suspended material mobilized by naturally occurring precipitation events.

25. Surface Water means all lakes, bays, rivers, streams, springs, ponds, impounding reservoirs, wetlands,

swamps, marshes, water sources, drainage systems and other surface water, natural or artificial, public or private within the state or under its jurisdiction that are not part of a treatment system allowed by state law,

regulation, or permit.

26. Treatment works means any devices and systems used in the storage, treatment, recycling and reclamation of municipal sewage and industrial wastes of a liquid nature to implement Section 201 of the Clean Water Act, or necessary to recycle or reuse water at the most economical cost over the estimated life of the works, including intercepting sewers, sewage collection systems, pumping, power and other equipment, and their appurtenances, extension, improvement, remodeling, additions, and alterations thereof. (See Part 212 of the Clean Water Act.)

27. For fecal coliform bacteria, a sample consists of one effluent grab portion collected during a 24-hour period at peak loads.

28. The term MGD shall mean million gallons per day.

29. The term GPO shall mean gallons per day.

30. The term mg/L shall mean milligrams per liter or parts per million (ppm).

31. The term SPC shall mean Spill Prevention and Control. Plan covering the release of pollutants as defined by the Louisiana Administrative Code (LAC 33 :IX.Chapter 9).

32. The term SPCC shall mean Spill Prevention Control and Countermeasures Plan. Plan covering the release of pollutants as defined in 40 CFR Part 112.

33. The term 1m& shall mean micrograms per liter or parts per billion (ppb).

34. The term ng/L shall mean nanograms per liter or parts per trillion (ppt).

35. Visible Sheen means a silvery or metallic sheen, gloss, or increased reflectivity ; visual color; or iridescence on the water surface.

36. Wastewater means liquid waste resulting from commercial, municipal, private, or industrial processes.

Wastewater includes, but is not limited to, cooling and condensing waters, sanitary sewage, industrial waste,

and contaminated rainwater runoff.

37. Waters of the State means for the purposes of the Louisiana Pollutant Discharge Elimination system, all surface waters within the state of Louisiana and, on the coastline of Lou isiana and the Gulf of Mexico, all surface waters extending therefrom three miles into the Gulf of Mexico. For purposes of the Louisiana Pollutant Discharge Elimination System, this includes all surface waters which are subject to the ebb and flow of the tide, lakes, rivers, streams (including intermittent streams), mudflats, sandflats, wetlands,

sloughs, prairie potholes, wet meadows, playa lakes, natural ponds, impoundments of waters within the state of Louisiana otherwise defined as "waters of the United States " in 40 CFR 122.2, and tributaries of all such waters. "Waters of the state" does not include waste treatment systems, including treatment ponds or lagoons designed to meet the requirements of the Clean Water Act, 33 U.S.C. 1251 et seq.

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38. Weekly average, other than for fecal coliform bacteria, is the highest allowable arithmetic mean of the daily discharges over a calendar week, calculated as the sum of all "daily discharge(s)" measured during a calendar week divided by the number of "daily discharge(s)" measured during that week. When the permit establishes weekly average concentration effluent limitations or conditions, and flow is measured as continuous record or with a totalizer, the weekly average concentration means the arithmetic average (weighted by flow) of all "daily discharge(s)" of concentration determined during the calendar week where C

= daily discharge concentration, F = daily flow and n = number of daily samples; weekly average discharge

= F1 + F2 +... + C1F1 + C2F2 +... + CnFn Fn

When the permit establishes weekly average concentration effluent limitations or conditions, and the flow is not measured as a continuous record, then the weekly average concentration means the arithmetic average of all "daily discharge(s)" of concentration determined during the calendar week.

The weekly average for fecal coliform bacteria is the geometric mean of the values for all effluent samples collected during a calendar week.

form_7027 _r15 8-16-2021

RBG-48288, Louisiana Pollutant Discharge Elimination System Permit Renewal

Contents

Text

Subject:

Enclosure:

Dear Mr. Hansett:

SUMMARY

SUMMARY

SUMMARY

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