Text

Renewed National Pollutant Discharge Elimination System (NPDES) Permit
	ML24103A063
Person / Time
Site:	Farley
Issue date:	04/12/2024
From:	Joyce R; Southern Nuclear Operating Co
To:	; Office of Nuclear Reactor Regulation, Document Control Desk
References
	NL-24-0134
	Download: ML24103A063 (1)
	v • d • e

J!. Southern Nuclear April 12, 2024 Docket Nos.: 50-348 50-364 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Regulatory Affairs 3535 Colonnade Parkway Birmingham, AL 35243 (205) 992-5000 NL-24-0134 Joseph M. Farley Nuclear Plant - Units 1 and 2 Renewed National Pollutant Discharge Elimination System (NPDES) Permit Ladies and Gentlemen:

In accordance with Section 3.2 of the Joseph M. Farley Nuclear Plant Environmental Protection Plan, Units 1 & 2, Appendix B to Facility Operating License Nos. NPF-2 and NPF-8, enclosed is a copy of the Farley Nuclear Plant National Pollutant Discharge Elimination System (NPDES) Permit Number AL0024619 issued by the Alabama Department of Environmental Management. The permit was issued on 03/25/2024.

There were no modifications that would change SNC's discharge criteria.

This letter contains no regulatory commitments. If you have any questions, please contact Ryan Joyce at 205.992.6468.

Respectfully submitted, Ryan Joyce Licensing Manager RMJ/was/cbg

Enclosure:

Renewed Farley NPDES Permit (No. AL0024619) cc:

Regional Administrator, Region II NRR Project Manager - Farley Nuclear Plant Senior Resident Inspector - Farley Nuclear Plant RTYPE: CFA04.054

Joseph M. Farley Nuclear Plant - Units 1 and 2 Renewed National Pollutant Discharge Elimination System (NPDES) Permit Enclosure Renewed Farley NPDES Permit (No. AL0024619)

LANCE R. LEFLEUR DIRECTOR MARCH 25,2024 MR. JAMES DELANO AEM Alabama Department of Environmental Management adem.alabama.gov 1400 Coliseum Blvd. 36110-2400 Post Office Box 301463 Montgomery, Alabama 36130-1463 (334) 271-7700 FAX (334) 271-7950 ENVIRONMENT AL AFFAIRS MANAGER SOUTHERN NUCLEAR OPERA TING COMPANY 3535 COLONNADE PKWY BIN N-218-EC BIRMINGHAM, AL 35243 RE:

FINAL PERMIT NPDES PERMIT NUMBER AL0024619

Dear Mr. Delano:

Attached is the issued copy of the above referenced permit. Please note the permit limitations and conditions with which the permittee must comply. No comments were received on the draft permit during the public comment period.

Future monitoring data should be submitted in accordance with the conditions of your permit. Please see PART I.C for your reporting requirements. To reduce the paperwork burden for both the Department and the Permittee. when submitting the required Discharge Monitoring Reports (DMRs). please do not submit lab worksheets. logs. reports or other paperwork not specifically required by the permit unless requested by ADEM staff.

Please be aware that Part I.C. l.c of your permit requires that you participate in the Department's web-based electronic reporting system for submittal of DMRs upon issuance of this permit unless valid justification as to why you cannot participate has been submitted to and approved by the Department. The Department transitioned from the E2 Reporting System to the Alabama Environmental Permitting and Compliance System (AEPACS) for the submittal of DMRs on November 15. 2021. AEPACS is an electronic system that allows facilities to apply for and maintain permits as well as submit other required applications, registrations, and certifications. In addition. the system allows facilities to submit required compliance reports or other information to the Department. The Department has used the E2 User account information to set up a similar User Profile in AEPACS based on the following criteria:

I.

The user has logged in to E2 since October I. 2019: and

2.

The E2 user account is set up using a unique email address.

E2 users that met the above criteria will only need to establish an ADEM Web Portal account (https://prd.adem.alabama.gov/awp) under the same email address as their E2 account to have the same permissions in AEPACS as they did in E2. They will also automatically be linked to the same ~acilities they were in E2.

If you have questions regarding this permit or monitoring requirements. please contact Victoria Kim by e-mail at victoria.kim@adem.alabama.gov or by phone at (334) 271-7895.

Sincerely.

~

Scott Ramsey. Chief Industrial/Municipal Branch Water Division

Enclosure:

Final Permit ct:

EPA Region IV:

Final Permit Montgomery Field Office:

Final Permit KAY IVEY GOVERNOR Birmingham Branch Decatur Branch Mobile Branch Mobile-Coastal 110 Vulcan Road Birmingham, AL 35209-47f2 (205) 942-6168 (205) 941-1603 (FAX) 2715 Sandlin Road, S.W.

Decatur, AL 35603-1333 (256) 353-1713 (256) 340-9359 (FAX) 2204 Perimeter Road Mobile, AL 36615-1131 (251) 450-3400 (251) 479-2593 (FAX) 3664 Dauphin Street, Suite B Mobile, AL 36608 (251) 304-1176 (251) 304-1189 (FAX)

AEM Alabama Del)artment oC Environmental Management NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT PERMITTEE:

FACILITY LOCATION:

PERMIT NUMBER:

RECEIVING WATERS:

SOUTI-IERN NUCLEAR OPERA TING COMP ANY JOSEPH M. FARLEY NUCLEAR PLANT 7388 N STATE HIGHWAY 95 COLUMBIA, ALABAMA 36319 HOUSTON COUNTY AL0024619 CHATTAHOOCHEE RIVER: (DSN00I, DSN0lA, DSN0IB, DSN0IC, DSN0ID, DSN0IE, DSN0IF, DSN0IG DSN0lH, DSN0II, DSN022, DSN023, DSN024, DSN24A, DSN24B, DSN025, DSN025A, DSN025B, DSN029, DSN030, DSN035)

WILSON CREEK: (DSN027, DSN027A, DSN034)

In accordance with and subject to the provisions of the Federal Water Pollution Control Act, as amended, 33 US.C. §§1251-1388 (the "FWPCA"), the Alabama Water Pollution Control Act, as amended, Code of Alabama 1975, §§ 22-22-1 to 22-22-14 (the "AWPCA'?,

the Alabama Environmental Management Act, as amended, Code of Alabama 1975, §§22-22A-1 to 22-22A-17, and rules and regulations adopted thereunder, and subject further to the terms and conditions set forth in this permit, the Permittee is hereby authorized to discharge into the above-named receiving waters.

ISSUANCE DATE:

MARCH 25,2024 EFFECTIVE DATE:

APRIL 1, 2024 EXPIRATION DATE:

MARCH 31, 2029 mental Management

Table of Contents PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS...................................................................... 1 A. Discharge Limitations and Monitoring Requirements....................................... '......................................................................... I B. Discharge Monitoring and Record Keeping Requirements....................................................................................................... 24 I. Representative Sampling.................................................................................................................................................... 24

2.

Test Procedures.................................................................................................................................................................. 24

3.

Recording of Results.......................................................................................................................................................... 24

4.

Records Retention and Production..................................................................................................................................... 24

5. Monitoring Equipment and Instrumentation...................................................................................................................... 25 C. Discharge Reporting Requirements........................................................................................................................................... 25

1. Reporting of Monitoring Requirements............................................................................................................................. 25

2.

Noncompliance Notification.............................................................................................................................................. 27 D. Other Reporting and Notification Requirements....................................................................................................................... 28 I.

Anticipated Noncompliance............................................................................................................................................... 28

2.

Termination ofDischarge................................................................................................................................................... 28

3. Updating Information......................................................................................................................................................... 28

4.

Duty to Provide Information.............................................................................................................................................. 28

5.

Cooling Water and Boiler Water Additives....................................................................................................................... 28

6.

Permit Issued Based on Estimated Characteristics............................................................................................................. 29 E.

Schedule of Compliance............................................................................................................................................................ 29 PART II: OTHER REQUIREMENTS, RESPONSIBILITIES, AND DUTIES............................................................................. 30 A. Operational and Management Requirements............................................................................................................................. 30

1.

Facilities Operation and Maintenance................................................................................................................................ 30

2.

Best Management Practices............................................................................................................................................... 30

3.

Spill Prevention, Control, and Management...................................................................................................................... 30 B. Other Responsibilities............................................................................................................................................................... 30

1.

Duty to Mitigate Adverse Impacts..................................................................................................................................... 30

2.

Right of Entry and Inspection............................................................................................................................................ 30 C. Bypass and Upset...................................................................................................................................................................... 30

1.

Bypass................................................................................................................................................................................ 30

2.

Upset.................................................................................................................................................................................. 31 D. Duty to Comply with Permit, Rules, and Statutes..................................................................................................................... 31

l.

Duty to Comply.................................................................................................................................................................. 31

2.

Removed Substances.......................................................................................................................................................... 32

3.

Loss or Failure of Treatment Facilities.............................................................................................................................. 32

4.

Compliance with Statutes and Rules.................................................................................................. *................................ 32 E. Permit Transfer, Modification, Suspension, Revocation, and Reissuance................................................................................ 32

l. Duty to Reapply or Notify of Intent to Cease Discharge.................................................................................................... 32

2.

Change in Discharge.......................................................................................................................................................... 32

3.

Transfer of Permit.............................................................................................................................................................. 33

4. Permit Modification and Revocation................................................................................................................................. 33

5.

Permit Termination............................................................................................................................................................ 34

6.

Permit Suspension.............................................................................................................................................................. 34

7.

Request for Permit Action Does Not Stay Any Permit Requirement................................................................................. 34 F.

Compliance with Toxic Pollutant Standard or Prohibition........................................................................................................ 34 G. Discharge of Wastewater Generated by Others......................................................................................................................... 34 PART III: OTHER PERMIT CONDITIONS................................................................................................................................... 35 A. Civil and Criminal Liability...................................................................................................................................................... 35 I.

Tampering.......................................................................................................................................................................... 35

2.

False Statements................................................................................................................................................................. 35

3.

Permit Enforcement............................................................................................................................................................ 35

4.

Relief from Liability........................................................................................................................................................... 35 B. Oil and Hazardous Substance Liability..................................................................................................................................... 35 C. Property and Other Rights......................................................................................................................................................... 35

Table of Contents (continued)

D. Availability of Reports.............................................................................................................................................................. 36 E. Expiration of Permits for New or Increased Discharges........................................................................................................... 36 F.

Compliance with Water Quality Standards............................................................................................................................... 36 G. Groundwater............................................................................................. *................................................................................. 36 H. Definitions................................................................................................................................................................................. 36 I.

Severability................................................................................................................................................................................ 39 PART IV: ADDITIONAL REQUIREMENTS, CONDITIONS, AND LIMITATIONS................................................................ 40 A. Best Management Practices (BMP) Plan Requirements............................................................................................................ 40 B.

Storm water Flow Measurement and Sampling Requirements.................................................................................................. 41 C. Effluent Toxicity Limitations and Biomonitoring Requirements.............................................................................................. 42 D. Cooling Water Intake Structure (CWIS) Requirements............................................................................................................ 45 E.

PRIORITY POLLUTANTS...................................................................................................................................................... 45

NPDES PERMIT NUMBER AL0024619 PART I: ])ISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS A. DISCHARGE LIMITATIONS AND MONITORING REQUIREMENTS DSN 0011: Main combined facility discharge.

Page 1 of 46 During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Temperature, Water Deg. Fahrenheit 00011)

Effluent Gross Value Temperature, Water Deg. Fahrenheit (000 11)

Effluent Gross Value oH (00400)

Effluent Gross Value Flow, In Conduit or Thru Treatment Plant (50050)

Effluent Gross Value Chlorine, Total Residual (50060) See notes (1,2)

Effluent Gross Value 4/

k::hlorine, Free Available (50064)

[Effluent Gross Value 4/

Quantity or Loading Units Quality or Concentration Units 81.7 (Report) degF Monthly Average Maximum Daily 100 111 deg F Monthly Average Maximum Daily 6.0 9.0 s.u.

Minimum Dailv Maximum Daily (Report)

(Report)

MGD Monthly Average Maximum Daily 0.2 0.2 mg/I Monthly Average Maximum Daily 0.2 0.5 mg/I Monthly Average Maximum Daily THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HAVE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Jan, Feb, Mar, Weekly Grab Dec Apr, May,.Jun, Weekly Grab Jul, Aug, Sep, Oct, Nov Weekly Grab All Months Daily Pump Log All Months Weekly Grab All Months Weekly Grab All Months I/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

See Part IV.A for Best Management Practices (BMP) Plan Requirements.

4/

When chlorination is occurring for purposes of corbicula or microbiofouling control, in accordance with BMP Plan grab samples shall be taken to verify compliance with total residual chlorine limitations. Sampling is required only during these periods. If bromine or a combination of bromine and chlorine is utilized for control of biofouling, monitoring requirements for TRC and F AC shall be applicable to TRO (Total Residual Oxidants) and FAO (Free Available Oxidants).

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 2 of 46 DSN 00lS: Main combined facility discharge.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter

II'oxicity, Ceriodaphnia Chronic (61426) 3/

!Effluent Gross Value II'oxicity, Pimephales Chronic (61428) 3/

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 0

pass=O;fail= 1 Single Sample 0

pass=O;fail= I Single Sample THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HAVE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Semi-Grab All Months Annually Semi-Grab All Months Annually I/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

See Part IV.D for Effluent Toxicity Limitations and Biomonitoring Requirements

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 3 of 46 DSN 00IY: Main combined facility discharge.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Priority Pollutants Total Effluent (50008) 4/ 5/

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 0

ug/1 Maximum Daily THERE SHALL :SE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Annually Grab All Months 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

See Part IV.A for Best Management Practices (BMP) Plan Requirements.

4/

In accordance with 40 CFR 423.15, the daily maximum permit limitation specified for priority pollutants is below the method detection level (BDML). 0 ug/1 is defined as "Below Detectable Amount". "Detectable Amount" is defined as detectable using the lowest level MDL method listed in 40 CFR Part 136.

5/

Monitoring and limitations are not applicable unless maintenance chemicals containing any priority pollutants are added to the cooling tower. In lieu of monitoring, the Permittee may submit an electronic annual certification of non-use of priority pollutants through the available schedule in the AEPACS system by January 28th of each year and the electronic discharge monitoring report should be marked as *9. Alternately, compliance with these limitations may be determined by engineering calculations which demonstrate that the regulated pollutants added to the system for cooling tower maintenance are not detectable in the final discharge by the analytical methods in 40 CFR part 136. Should the Permittee elect to demonstrate compliance by engineering calculations, monitoring is not required and "*9" should be marked for priority pollutants on the electronic discharge monitoring report. The engineering calculations shall be submitted through the available schedule in the AEPACS system by January 28th of each year.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 4 of 46 DSN 0lAl: Cooling tower blowdown, Unit 1.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Chlorine, Total Residual (DSG. Time) (00208) 4/ 6/

Effluent Gross Value Chromium, Total (As Cr)

(01034)

Effluent Gross Value Zinc, Total (As Zn) (01092)

Effluent Gross Value Flow, In Conduit or Thru Treatment Plant (50050)

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 120 min/day Maximum Daily 0.20 0.20 mg/I Monthly Average Maximum Daily 1.0 1.0 mg/I Monthly Average Maximum Daily (Report)

(Report)

MGD Monthly Average Maximum Daily THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Daily Pump Log All Months 5/

2X Monthly Grab All Months 3/

Monthly Grab All Months 3/

Weekly Pump Log All Months 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

Monitoring frequency shall be I/year if cooling tower maintenance chemicals containing these compounds is not initiated by the permittee. If monitoring is not applicable during the monitoring period, enter "NODI=9" on the monthly DMR.

4/

To be monitored when chlorine is added directly to cooling towers.

5/

Daily logs must be maintained on-site for inspection by ADEM. Data does not have to be reported to ADEM.

6/

Neither free available nor total residual chlorine may be discharged from any single generating unit for more than two hours in any one day and not more than one unit in any plant may discharge free available or total residual chlorine at any one time unless the permittee can demonstrate that the units at the permitted location cannot operate at or below this level of chlorination. The permittee shall not use cooling tower maintenance chemicals which contain any of the 126 priority pollutants, found in Appendix A to 40 CFR 423, in detectable amounts, except for total chromium and total zinc which shall be limited as above. There is no difference in test methods between TRC/F AC and TRO/FAO.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Pag_e 5 of 46 DSN OlBl: Cooling tower blowdown, Unit 2 During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Chlorine, Total Residual (DSG. Time) (00208) 4/ 6/

Effluent Gross Value thromium, Total (As Cr)

(01034)

~ffluent Gross Value IZinc, Total (As Zn) (01092)

!Effluent Gross Value Flow, In Conduit or Thru Treatment Plant (50050)

!Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 120 min/day Maximum Daily 0.20 0.20 mg/I Monthly Average Maximum Daily 1.0 1.0 mg/I Monthly Average Maximum Daily (Report)

(Report)

Monthly Average Maximum Daily MGD THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2

. Type1 Daily Pump Log All Months 5/

2X Monthly Grab All Months 3/

Monthly Grab All Months 3/

Weekly Pump Log All Months I/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

Monitoring frequency shall be I/year if cooling tower maintenance chemicals containing these compounds is not initiated by the permittee. If monitoring is not applicable during the monitoring period, enter "NODI=9" on the monthly DMR.

4/

To be monitored when chlorine is added directly to cooling towers.

5/

Daily logs must be maintained on-site for inspection by ADEM. Data does not have to be reported to ADEM.

6/

Neither free available nor total residual chlorine may be discharged from any single generating unit for more than two hours in any one day and not more than one unit in any plant may discharge free available or total residual chlorine at any one time unless the permittee can demonstrate that the units at the permitted location cannot operate at or below this level of chlorination. The permittee shall not use cooling tower maintenance chemicals which contain any of the 126 priority pollutants, found in Appendix A to 40 CFR 423, in detectable amounts, except for total chromium and total zinc which shall be limited as above. There is no difference in test methods between TRC/FAC and TRO/F AO.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Pa_g_e 6 of 46 DSN 0lCl & DSN24Al: Treated chromate bearing wastewater.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter pH (00400)

[Effluent Gross Value Chromium, Total (As Cr)

(01034)

Effluent Gross Value Plow, In Conduit or Thru Treatment Plant (50050)

!Effluent Gross Yalue Quantity or Loading Units Quality or Concentration Units 6.0 9.0 S.U.

Minimum Daily Maximum Daily 0.50 0.50 mg/I Monthly Average Maximum Daily (Report)

(Report)

Monthly Average Maximum Daily MGD THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Once per Grab All Months batch Once per Grab All Months batch Once per Totalizer All Months batch 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 7 of 46 DSN 0lCS & DSN 24AS: Treated chromate bearing wastewater.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Perinittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Solids, Total Suspended (00530)

Effluent Gross Value Oil & Grease (00556)

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 30.0 100.0 mg/I Monthly Average Maximum Daily 15.0 20.0 mg/I Monthly Average Maximum Dailv THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Semi-Grab All Months Annually Semi-Grab All Months Annually 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Pa_g_e 8 of 46 DSN 0lDl: Turbine building sump, Unit 1. 3/

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Solids, Total Suspended (00530)

Effluent Gross Value Oil & Grease (00556)

Effluent Gross Value Plow, In Conduit or Thru Treatment Plant (50050)

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 30.0 100.0 mg/I Monthly Average Maximum Daily 15.0 20.0 mg/!

Monthly Average Maximum Dailv (Report)

(Report)

Monthly Average Maximum Daily MGD THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Monthly Grab All Months Monthly Grab All Months Monthly Calculated All Months 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

These parameters are only applicable during the discharge of low volume wastes.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 9 of 46 DSN OlEl: Turbine building sump, Unit 2. 3/

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Solids, Total Suspended (00530)

Effluent Gross Value Oil & Grease (00556)

!Effluent Gross Value

!Flow, In Conduit or Thru rireatment Plant (50050)

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 30.0 lQO.O mg/I Monthly Average Maximum Daily 15.0 20.0 mg/I Monthly Average Maximum Daily (Report)

(Report)

Monthly Average Maximum Daily MOD THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Monthly Grab All Months Monthly Grab All Months Monthly Calculated All Months 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

These parameters are only applicable during the discharge of low volume wastes.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Pa_g_e IO of 46 DSN 0lFS: Steam generator blowdown, Unit 1.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Solids, Total Suspended (00530)

Effluent Gross Value Oil & Grease (00556)

Effluent Gross Value Boron, Total (As B) (01022)

Effluent Gross Value 3/

Flow, In Conduit or Thru Treatment Plant (50050)

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 30.0 100.0 mg/I Monthly Average Maximum Daily 15.0 20.0 mg/I Monthly Average Maximum Daily (Report) mg/I Maximum Daily (Report)

MOD Maximum Daily THERE SHALL BE NO DISCHARGE OF POL YCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Semi-Grab All Months Annually Semi-Grab All Months Annually Semi-Grab All Months Annually Semi-Calculated All Months Annually I/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

Monitoring is required only-if additives containing this element are used in the steam generator system, and are subject to discharge through these outfalls. If monitoring is not applicable during the monitoring period, enter "NODI=9" on the monthly DMR.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMIT A TIO NS, CONDITIONS, AND REQUIREMENTS Page II of 46 DSN 0lGS: Steam generator blowdown, Unit 2.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Solids, Total Suspended (00530)

Effluent Gross Value Oil & Grease (00556)

'Effluent Gross Value Boron, Total (As 8) (0 I 022)

Effluent Gross Value 3/

Flow, In Conduit or Thru

Treatment Plant (50050)

!Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 30.0 100.0 mg/I Monthly Average Maximum Daily 15.0 20.0 mg/I Monthly Average Maximum Daily (Report) mg/I Maximum Daily (Report)

MGD Maximum Daily THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Semi-Grab All Months Annually Semi-Grab All Months Annually Semi-Grab All Months Annually Semi-Calculated All Months Annually 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

Monitoring is required only if additives containing this element are used in the steam generator system, and are subject to discharge through these outfalls. If monitoring is not applicable during the monitoring period, enter "NODI=9" on the monthly DMR.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUffiEMENTS Page 12 of 46 DSN 0lHS: Liquid radwaste system, Unit 1.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Frequency2 Type1 Solids, Total Suspended 30.0 100.0 Semi-(00530) mg/I Grab All Months Eftluent Gross Value Monthly Average Maximum Daily Annually Oil & Grease (00556) 15.0 20.0 mg/I Semi-Grab All Months Effluent Gross Value Monthly Average Maximum Daily Annually Flow, In Conduit or Thru (Report)

Semi-Treatment Plant (50050)

MGD Calculated All Months Effluent Gross Value Maximum Daily Annually THE PERMITTEE SHALL COMPLY WITH ALL THE U.S. NUCLEAR REGULATORY COMMISSION REQUIREMENTS RELATIVE TO THIS DISCHARGE.

THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

I/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUffiEMENTS Pa_g_e 13 of 46 DSN 0llS: Liquid radwaste system, Unit 2.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Frequency2 Type1 Solids, Total Suspended 30.0 100.0 Semi-(00530) mg/I Grab All Months Effluent Gross Value Monthly Average Maximum Daily Annually Oil & Grease (00556) 15.0 20.0 mg/I Semi-Grab All Months

!Effluent Gross Value Monthly Average Maximum Dailv Annuallv IFJow, In Conduit or Thru (Report)

Semi-rfreatment Plant (50050)

MGD Calculated All Months

!Effluent Gross Value Maximum Daily Annually THE PERMITTEE SHALL COMPLY WITH ALL THE U.S. NUCLEAR REGULATORY COMMISSION REQUIREMENTS RELATIVE TO THIS DISCHARGE.

THERE SHALL BE NO DISCHARGE OF POLYCHLORINA TED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 14 of 46 DSN 022S: River water building sump South.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

THE SOUTH RIVER WATER SUMP SHALL BE OBSERVED AT LEAST MONTHLY TO DETERMINE IF IT IS OPERA TING EFFICIENTLY, AND A LOG SHALL BE KEPT AS A RECORD OF THESE MONTHLY OBSERVATIONS. THE LOGS SHALL INCLUDE THE DATE OF OBSERVATION, INSPECTION PERSON, AND STEPS TAKEN TO CORRECT ANY PROBLEMS. THE LOG SHALL BE MADE AVAILABLE DURING ON-SITE INSPECTIONS BY ADEM AND EPA.

THE DISCHARGE SHALL HAVE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED FOR TRANSFORMER FLUID.

I/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be _reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Pa_g_e 15 of 46 DSN 023S: River water building sump North.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

THE SOUTH RIVER WATER SUMP SHALL BE OBSERVED AT LEAST MONTHLY TO DETERMINE IF IT IS OPERATING EFFICIENTLY, AND A LOG SHALL BE KEPT AS A RECORD OF THESE MONTHLY OBSERVATIONS. THE LOGS SHALL INCLUDE THE DATE OF OBSERVATION, INSPECTION PERSON, AND STEPS TAKEN TO CORRECT ANY PROBLEMS. THE LOG SHALL BE MADE AVAILABLE DURING ON-SITE INSPECTIONS BY ADEM AND EPA.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED FOR TRANSFORMER FLUID.

I/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 16 of 46 DSN 024S, DSN025S, DSN027S, and DSN029S: Storm water runoff from industrial activities from yard drainage areas. 3/ 4/ 5/

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter oH (00400)

Effluent Gross Value Solids, Total Suspended (00530)

Effluent Gross Value Oil & Grease (00556)

Effluent Gross Value Flow, In Conduit or Thru Treatment Plant (50050)

Effluent Gross Value Chemical Oxygen Demand (COD) (81017)

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units (Report)

(Report)

S.U.

Minimum Daily Maximum Daily (Report)

(Report) mg/I Monthly Average Maximum Daily 15.0 mg/I Maximum Daily (Report)

(Report)

Monthly Average Maximum Daily MGD (Report)

(Report) mg/I Monthly Average Maximum Daily THERE SHALL BE NO DISCHARGE OF POLYCHLORINATE]) BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Semi-Grab All Months Annually Semi-Grab All Months Annually Semi-Grab All Months Annually Semi-Instantaneous All Months Annually Semi-Grab All Months Annually 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

See Part IV.A for Best Management Practices (BMP) Plan Requirements.

4/

See Part IV.B for Stormwater Measurement and Sampling Requirements.

5/

Monitoring requirements apply only to DSN024S as this outfall has been deemed a representative sampling site for the other stormwater outfalls.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 17 of 46 DSN 24B1: Waste settling pond.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter pH (00400)

!Effluent Gross Value Solids, Total Suspended (00530)

Effluent Gross Value Oil & Grease (00556)

Effluent Gross Value Flow, In Conduit or Thru

~reatment Plant (50050)

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 6.0 9.0 s.u.

Minimum Daily Maximum Daily 30.0 100.0 mg/I Monthly Average Maximum Daily 15.0 20.0 mg/I Monthly Average Maximum Dailv (Report)

(Report)

Monthly Average Maximum Daily MGD THERE SHALL BE NO DISCHARGE OF POLYCHLORINA TED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Monthly Grab All Months Monthly Grab All Months Monthly Grab All Months Monthly Calculated All Months 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Pa_g_e 18 of 46 DSN 25Al: Cooling tower overflow, Unit 1 During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter K=:hlorine, Total Residual (DSG. Time) (00208) 4/

~ffluent Gross Value Chromium, Total (As Cr)

(01034) 7/

!Effluent Gross Value Zinc, Total (As Zn) (0 1092)

!Effluent Gross Value Flow, In Conduit or Thru Treatment Plant (50050)

Effluent Gross Value Chlorine, Total Residual

50060) See notes (1,2) 6/

Effluent Gross Value Chlorine, Free Available (50064) 6/

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 120 min/day Maximum Daily 0.20 0.20 mg/I Monthly Average Maximum Daily 1.0 1.0 mg/I Monthly Average Maximum Daily (Report)

(Report)

MGD Monthly Average Maximum Daily (Report)

(Report) mg/I Monthly Average Maximum Daily 0.20 0.50 mg/I Monthly Average Maximum Daily THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Daily Pump Log All Months 5/

2X Monthly Grab All Months 3/

Monthly Grab All Months 3/

Weekly Calculated All Months Weekly Grab All Months Weekly Grab All Months 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

Monitoring frequency shall be I/year if cooling tower maintenance chemicals containing these compounds is not initiated by the permittee. If monitoring is not applicable during the monitoring period, enter "NODI=9" on the monthly DMR.

4/

To be monitored when chlorine is added directly to cooling towers.

5/

Daily logs must be maintained on-site for inspection by ADEM. Data does not have to be reported to ADEM.

6/

Neither free available nor total residual chlorine may be discharged from any single generating unit for more than two hours in any one day and not more than one unit in any plant may discharge free available or total residual chlorine at any one time unless the permittee can demonstrate that the units at the permitted location cannot operate at or below this level of chlorination. The permittee shall not use cooling tower maintenance chemicals which contain any of the 126 priority pollutants, found in Appendix A to 40 CFR 423, in detectable amounts, except for total chromium and total zinc which shall be limited as above. There is no difference in test methods between TRC/F AC and TRO/FAO.

7/

Twice per month monitoring shall be conducted so that two samples are collected and analyzed at least 10 days apart.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Pa_g_e 19 of 46 DSN 25Bl: Main sewage treatment plant 1 During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Frequency2 Type1 BOD, 5-Day (20 Deg. C) 30.0 45.0 (003 IO) 3/

mg/I Monthly Grab All Months Effluent Gross Value Monthly Average Maximum Daily oH (00400) 6.0 9.0 S.U.

Monthly Grab All Months Effluent Gross Value Minimum Daily Maximum Daily Solids, Total Suspended 30.0 45.0 (00530) 3/

mg/I Monthly Grab All Months Effluent Gross Value Monthly Average Maximum Daily Plow, In Conduit or Thru (Report)

(Report)

Treatment Plant (50050)

MGD Monthly Calculated All Months Effluent Gross Value Monthly Average Maximum Daily E. Coli (51040) 126 235 col/l00mL Monthly Grab All Months Effluent Gross Value Monthly Average Maximum Daily THE SEWAGE PLANT AND ITS ASSOCIATED DISCHARGE SHALL BE OBSERVED AT LEAST DAILY TO DETERMINE IF IT IS OPERATING EFFICIENTLY, AND A LOG SHALL BE KEPT AS A RECORD OF THESE DAILY OBSERVATIONS. IN ADDITION, MAJOR OPERATIONAL ITEMS SHALL BE CHECKED DAILY, AND A LOG MAINTAINED OF THESE CHECKS. THE LOGS SHALL INCLUDE THE DATE OF OBSERVATION, INSPECTION PERSON, COMMENTS ON THE PLANTS OPERATION, AND STEPS TAKEN TO CORRECT ANY OPERATION PROBLEMS. THE LOG SHALL BE MADE AVAILABLE DURING ON-SITE INSPECTIONS BY ADEM AND EPA.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

Over time of predominant discharge. If manually composited, maximum time between individual aliquots is two (2) hours.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 20 of 46 DSN 27Al: Cooling tower overflow, Unit 2 During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

- Parameter Chlorine, Total Residual (DSG. Time) (00208) 4/

Effluent Gross Value Chromium, Total (As Cr)

(01034) 7/

Effluent Gross Value IZinc, Total (As Zn) (01092)

Effluent Gross Value flow, In Conduit or Thru Treatment Plant (50050)

Effluent Gross Value Chlorine, Total Residual 50060) See notes (1,2) 6/

Effluent Gross Value Chlorine, Free Available 50064) 6/

Effluent Gross Value Quantity or Loading Units Quality or Concentration Units 120 min/day Maximum Daily 0.2 0.2 mg/I Monthly Average Maximum Daily 1.0 1.0 mg/I Monthlv Average Maximum Dailv (Report)

(Report)

Monthly Average Maximum Daily MGD (Report)

(Report) mg/I Monthly Average Maximum Daily 0.20 0.50 mg/I Monthly Average Maximum Daily THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HAVE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

Sample Sample Seasonal Frequency2 Type1 Daily Pump Log All Months 5/

2X Monthly Grab All Months 3/

Monthly Grab All Months 3/

Weekly Calculated All Months Weekly Grab All Months Weekly Grab All Months 1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

Monitoring frequency shall be I/year if cooling tower maintenance chemicals containing these compounds is not initiated by the permittee. If monitoring is not applicable during the monitoring period, enter "NODI=9" on the monthly DMR.

4/

To be monitored when chlorine is added directly to cooling towers.

5/

Daily logs must be maintained on-site for inspection by ADEM. Data does not have to be reported to ADEM.

6/

Neither free available nor total residual chlorine may be discharged from any single generating unit for more than two hours in any one day and not more than one unit in any plant may discharge free available or total residual chlorine at any one time unless the permittee can demonstrate that the units at the permitted location cannot operate at or below this level of chlorination. The permittee shall not use cooling tower maintenance chemicals which contain any of the 126 priority pollutants, found in Appendix A to 40 CFR 423, in detectable amounts, except for total chromium and total zinc which shall be limited as above. There is no difference in test methods between TRC/F AC and TRO/F AO.

7/

Twice per month monitoring shall be conducted so that two samples are collected and analyzed at least 10 days apart.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 21 of 46 DSN 30: Intake screen backwash water, units 1 and 2, to intake canal.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

THIS DISCHARGE IS PERMITTED WITH NO MONITORING REQUIREMENTS OR LIMITATIONS PROVIDED THE PERMITTEE ADDS NO POLLUTANTS TO THE DISCHARGE.

THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUffiEMENTS Page 22 of 46 DSN 34: Miscellaneous low flow, non-contact cooling water sources. 3/

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

THIS DISCHARGE IS PERMITTED WITH NO MONITORING REQUIREMENTS OR LIMIT A TIO NS PROVIDED THE PERMITTEE ADDS NO POLLUTANTS TO THE DISCHARGE.

THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.

I/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

3/

Miscellaneous, low-volume, non-contact cooling waters means non-contact cooling waters with a maximum flow less than 5000 gpd, and subject to addition ofno other pollutants other than heat.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 23 of 46 DSN 35: Petroleum storage area.

During the period beginning on the effective date of this permit and lasting through the expiration date of this permit, the Permittee is authorized to discharge from the outfall(s) listed above and described more fully in the Permittee's application. Such discharges shall be limited and monitored by the Permittee as specified below:

1.

The facility will have a valid SPCC Plan pursuant as specified below:

2.

Best Management Practices (BMP) are used in draining the diked area. BMP is defined as use of a portable oil skimmer of similar device or use of absorbent material to remove oil and grease (as indicated by the presence of sheen) immediately prior to draining.

3.

Monitoring records shall be maintained in the fonn of a log and shall contain the following information, as a minimum:

a.

Date and time of discharge.

b.

Estimated volume of discharge.

c.

Initials of person making visual inspection and authorizing discharge.

d.

Observed conditions of stormwater discharged.

THERE SHALL BE NO DISCHARGE OF POLYCHLORINATED BIPHENYL COMPOUNDS SUCH AS THOSE COMMONLY USED IN TRANSFORMER FLUID.

THE DISCHARGE SHALL HA VE NO SHEEN, AND THERE SHALL BE NO DISCHARGE OF VISIBLE OIL, FLOATING SOLIDS OR VISIBLE.FOAM IN OTHER THAN TRACE AMOUNTS.

1/

Samples collected to comply with the monitoring requirements specified above shall be collected at the following location: At the nearest accessible location just prior to discharge and after final treatment. Unless otherwise specified, composite samples shall be time composite samples collected using automatic sampling equipment or a minimum of eight (8) equal volume grab samples collected over equal time intervals. All composite samples shall be collected for the total period of discharge not to exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2/

If only one sampling event occurs during a month, the sample result shall be reported on the discharge monitoring report as both the monthly average and daily maximum value for all parameters with a monthly average limitation.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 24 of 46 B. DISCHARGE MONITORING AND RECORD KEEPING REQUIREMENTS.

1.

Representative Sampling Samples and measurements taken as required herein shall be representative of the volume and nature of the monitored discharge and shall be in accordance with the provisions of this permit.

2.

Test Procedures For the purpose of reporting and compliance, permittees shall use one of the following procedures:

a.

For parameters with an EPA established Minimum Level (ML), report the measured value if the analytical result is at or above the ML and report "0" for values below the ML. Test procedures for the analysis of pollutants shall conform to 40 CFR Part 136 and guidelines published pursuant to Section 304(h) of the FWPCA, 33 U.S.C. Section 1314(h). If more than one method for analysis of a substance is approved for use, a method having a minimum level lower than the permit limit shall be used. If the minimum level of all methods is higher than the permit limit, the method having the lowest minimum level shall be used and a report of less than the minimum level shall be reported as zero and will constitute compliance; however, should EPA approve a method with a lower minimum level during the term of this permit the permittee shall use the newly approved method.

b.

For pollutants parameters without an established ML, an interim ML may be utilized. The interim ML shall be calculated as 3.18 times the Method Detection Level (MDL) calculated pursuant to 40 CFR Part 136, Appendix B.

Permittees may develop an effluent matrix-specific ML, where an effluent matrix prevents attainment of the established ML. However, a matrix specific ML shall be based upon proper laboratory method and technique. Matrix-specific MLs must be approved by the Department, and may be developed by the permittee during permit issuance, reissuance, modification, or during compliance schedule.

In either case the measured value should be reported if the analytical result is at or above the ML and "0" reported for values below the ML.

c.

For parameters without an EPA established ML, interim ML, or matrix-specific ML, a report of less than the detection limit shall constitute compliance if the detection limit of all analytical methods is higher than the permit limit using the most sensitive EPA approved method. For the purpose of calculating a monthly average, "0" shall be used for values reported less than the detection limit.

The Minimum Level utilized for procedures A and B above shall be reported on the permittee's DMR. When an EPA approved test procedure for analysis of a pollutant does not exist, the Director shall approve the procedure to be used.

3.

Recording of Results For each measurement or sample taken pursuant to the requirements of this permit, the permittee shall record the following information:

a.

The facility name and location, point source number, date, time and exact place of sampling;

b.

The name(s) ofperson(s) who obtained the samples or measurements;

c.

The dates and times the analyses were performed;

d.

The name(s) of the person(s) who performed the analyses;

e.

The analytical techniques or methods used, including source of method and method number; and

f.

The results of all required analyses.

4.

Records Retention and Production The permittee shall retain records of all monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports required by the permit, and records of all data used to complete the above reports or the application for this permit, for a period of at least three years from the date of the sample measurement, report or application. This period may be extended by request of the Director at any time.

If litigation or other enforcement action, under the A WPCA and/or the FWPCA, is ongoing which involves any of the above records, the records shall be kept until the litigation is resolved. Upon the written request of the Director or his designee, the

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LII\\IITATIONS, CONDITIONS, AND REQllJREI\\IENTS Page 25 of 46 permittee shall provide the Director with a copy of any record required to be retained by this paragraph. Copies of these records shall not be submitted unless requested.

All records required to be kept for a period of three years shall be kept at the permitted facility or an alternate location approved by the Department in writing and shall be available for inspection.

S.

Monitoring Equipment and Instrumentation All equipment and instrumentation used to determine compliance with the requirements of this permit shall be installed, maintained, and calibrated in accordance with the manufacturer's instructions or, in the absence of manufacturer's instructions, in accordance with accepted practices. The permittee shall develop and maintain quality assurance procedures to ensure proper operation and maintenance of all equipment and instrumentation. The quality assurance procedures shall include the proper use, maintenance, and installation, when appropriate, of monitoring equipment at the plant site.

C. DISCHARGE REPORTING REQUIREMENTS

1.

Reporting of Monitoring Requirements

a.

The permittee shall conduct the required monitoring in accordance with the following schedule:

MONITORING REQUIRED MORE FREQUENTLY THAN MONTHLY AND MONTHLY shall be conducted during the first full month following the effective date of coverage under this permit and every month thereafter.

QUARTERLY MONITORING shall be conducted at least once during each calendar quarter. Calendar quarters are the periods of January through March, April through June, July through September, and October through December. The permittee shall conduct the quarterly monitoring during the first complete calendar quarter following the effective date of this permit and is then required to monitor once during each quarter thereafter. Quarterly monitoring may be done anytime during the quarter, unless restricted elsewhere in this permit, but it should be submitted with the last DMR due for the quarter, i.e., (March, June, September and December DMR's).

SEMIANNUAL MONITORING shall be conducted at least once during the period of January through June and at least once during the period of July through December. The permittee shall conduct the semiannual monitoring during the first complete calendar semiannual period following the effective date of this permit and is then required to monitor once during each semiannual period thereafter. Semiannual monitoring may be done anytime during the semiannual period, unless restricted elsewhere in this permit, but it should be submitted with the last DMR for the month of the semiannual period, i.e. (June and December DMR's).

ANNUAL MONITORING shall be conducted at least once during the period of January through December. The permittee shall conduct the annual monitoring during the first complete calendar annual period following the effective date of this permit and is then required to monitor once during each annual period thereafter. Annual monitoring may be done anytime during the year, unless restricted elsewhere in this permit, but it should be submitted with the December DMR.

b.

The permittee shall submit discharge monitoring reports (DMRs) on the forms provided by the Department and in accordance with the following schedule:

REPORTS OF MORE FREQUENTLY THAN MONTHLY AND MONTHLY TESTING shall be submitted on a quarterly basis. The first report is due on the 28th day of July, 2024. The reports shall be submitted so that they are received by the Department no later than the 28th day of the month following the reporting period.

REPORTS OF QUARTERLY TESTING shall be submitted on a quarterly basis. The first report is due on the 28th day of July, 2024. The reports shall be submitted so that they are received by the Department no later than the 28th day of the month following the reporting period.

REPORTS OF SEMIANNUAL TESTING shall be submitted on a semiannual basis. The reports are due on the 28th day of JANUARY and the 28th day of JULY. The reports shall be submitted so that they are received by the Department no later than the 28th day of the month following the reporting period.

REPORTS OF ANNUAL TESTING shall be submitted on an annual basis. The first report is due on the 28th day of JANUARY. The reports shall be submitted so that they are received by the Department no later than the 28th day of the month following the reporting period.

c.

Except as allowed by Provision I.C. l.c.(l) or (2), the permittee shall submit all Discharge Monitoring Reports (DMRs) required by Provision I.C. I.b electronically.

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 26 of 46 (I) If the perrnittee is unable to complete the electronic submittal ofDMR data due to technical problems originating with the Department's electronic system (this could include entry/submittal issues with an entire set ofDMRs or individual parameters), the permittee is not relieved of their obligation to submit DMR data to the Department by the date specified in Provision I.C. l.b, unless otherwise directed by the Department.

If the Department's electronic system is down on the 28th day of the month in which the DMR is due or is down for an extended period oftime, as determined by the Department, when a DMR is required to be submitted, the permittee may submit the data in an alternate manner and format acceptable to the Department. Preapproved alternate acceptable methods include faxing, e-mailing, mailing, or hand-delivery of data such that they are received by the required reporting date. Within 5 calendar days of the Department's electronic system resuming operation, the permittee shall enter the data into the Department's electronic system, unless an alternate timeframe is approved by the Department.

A comment should be included on the electronic DMR submittal verifying the original submittal date (date of the fax, copy of the dated e-mail, or hand-delivery stamped date), if applicable.

(2) The permittee may submit a request to the Department for a temporary electronic reporting waiver for DMR submittals. The waiver request should include the permit number; permittee name; facility/site name; facility address; name, address, and contact information for the responsible official or duly authorized representative; a detailed statement regarding the basis for requesting such a waiver; and the duration for which the waiver is requested.

Approved electronic reporting waivers are not transferrable.

Permittees with an approved electronic reporting waiver for DMRs may submit hard copy DMRs for the period that the approved electronic reporting waiver request is effective. The permittee shall submit the Department-approved DMR forms to the address listed in Provision I.C.1.e.

(3) If a permittee is allowed to submit a hard copy DMR, the DMR must be legible and bear an original signature. Photo and electronic copies of the signature are not acceptable and shall not satisfy the reporting requirements of this permit.

( 4) If the permittee, using approved analytical methods as specified in Provision I.B.2, monitors any discharge from a point source for a limited substance identified in Provision I.A. of this permit more frequently than required by this permit, the results of such monitoring shall be included in the calculation and reporting of values on the DMR and the increased frequency shall be indicated on the DMR.

(5) In the event no discharge from a point source identified in Provision I.A. of this permit and described more fully in the permittee's application occurs during a monitoring period, the permittee shall report "No Discharge" for such period on the appropriate DMR.

d.

All reports and forms required to be submitted by this permit, the A WPCA and the Department's Rules, shall be electronically signed ( or, if allowed by the Department, traditionally signed) by a "responsible official" of the permittee as defined in ADEM Administrative Code Rule 335-6-6-.09 or a "duly authorized representative" of such official as defined in ADEM Administrative Code Rule 335-6-6-.09 and shall bear the following certification:

"I certify under penalty of law tit at tit is document and all attacltme11ts were prepared under my direction or supervision in accordance with a system designed to assure tl,at qualified personnel properly gatl,er and evaluate the information submitted. Based on my inquiry of tire person or persons wlto manage the system, or those persons directly responsible for gathering 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. "

e.

Discharge Monitoring Reports required by this permit, the A WPCA, and the Department's Rules that are being submitted in hard copy shall be addressed to:

Alabama Department of Environmental Management Water Division Office of Water Services Post Office Box 301463 Montgomery, Alabama 36130-1463

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQl11REMENTS Certified and Registered Mail containing Discharge Monitoring Reports shall be addressed to:

Alabama Department of Environmental Management Water Division Office of Water Services 1400 Coliseum Boulevard Montgomery, Alabama 36110-2400 Page 27 of 46

f.

All other correspondence and reports required to be submitted by this permit, the A WPCA, and the Department's Rules shall be addressed to:

Alabama Department of Environmental Management' Water Division Post Office Box 301463 Montgomery, Alabama 36130-1463 Certified and Registered Mail shall be addressed to:

Alabama Department of Environmental Management Water Division 1400 Coliseum Boulevard Montgomery, Alabama 36110-2400

g.

lfthis permit is a re-issuance, then the permittee shall continue to submit DMRs in accordance with the requirements of their previous permit until such time as DMRs are due as discussed in Part I.C. l.b above.

2.

Noncompliance Notification

a.

24-Hour Noncompliance Reporting The permittee shall report to the Director, within 24-hours of becoming aware of the noncompliance, any noncompliance which may endanger health or the environment. This shall include but is not limited to the following circumstances:

(I) does not comply with any daily minimum or maximum discharge limitation for an effluent characteristic specified in Provision I. A. of this permit which is denoted by an "(X)";

(2) threatens human health or welfare, fish or aquatic life, or water quality standards; (3) does not comply with an applicable toxic pollutant effluent standard or prohibition established under Section 307(a) ofthe FWPCA, 33 U.S.C. Section 1317(a);

( 4) contains a quantity of a hazardous substance which has been determined may be harmful to public health or welfare under Section 3 I l(b)(4) of the FWPCA, 33 U.S.C. Section 132 l(b)(4);

(5) exceeds any discharge limitation for an effluent characteristic as a result of an unanticipated bypass or upset; and (6) is an unpermitted direct or indirect discharge of a pollutant to a water of the state (unpermitted discharges properly reported to the Department under any other requirement are not required to be reported under this provision).

The permittee shall orally report the occurrence and circumstances of such discharge to the Director within 24-hours after the permittee becomes aware of the occurrence of such discharge. In addition to the oral report, the permittee shall submit to the Director or Designee a written report as provided in Part I.C.2.c no later than five (5) days after becoming aware of the occurrence of such discharge.

b.

If for any reason, the permittee's discharge does not comply with any limitation of this permit, the permittee shall submit to the Director or Designee a written report as provided in Part I.C.2.c below, such report shall be submitted with the next Discharge Monitoring Report required to be submitted by Part LC. I of this permit after becoming aware of the occurrence of such noncompliance.

c.

Any written report required to be submitted to the Director or Designee by Part I.C.2 a. orb. shall be submitted using a Noncompliance Notification Form (ADEM Form 421) available on the Department's website (http://adem.a1abama.gov/DeptForms/Form42 l.pdf) and include the following information:

(I) A description of the discharge and cause of noncompliance;

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 28 of 46 (2) The period of noncompliance, including exact dates and times or, if not corrected, the anticipated time the noncompliance is expected to continue; and (3) A description of the steps taken and/or being taken to reduce or eliminate the noncomplying discharge and to prevent its recurrence.

D. OTHER REPORTING AND NOTIFICATION REQUIREMENTS I

1.

Anticipated Noncompliance The permittee shall give the Director written advance notice of any planned changes or other circumstances regarding a facility which may result in noncompliance with permit requirements.

2.

Termination of Discharge The permittee shall notify the Director, in writing, when all discharges from any point source(s) identified in Provision I. A. of this permit have permanently ceased. This notification shall serve as sufficient cause for instituting procedures for modification or termination of the permit.

3.

Updating Information

a.

The permittee shall inform the Director of any change in the permittee's mailing address, telephone number or in the permittee's desigpation of a facility contact or office having the authority and responsibility to prevent and abate violations of the A WPCA, the Department's Rules, and the terms and conditions of this permit, in writing, no later than ten (10) days after such change. Upon request of the Director or his designee, the pemiittee shall furnish the Director with an update of any information provided in the permit application.

b. If 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 Director, it shall promptly submit such facts or information with a written explanation for the mistake and/or omission.

4.

Duty to Provide Information The permittee shall furnish to the Director, within a reasonable time, any information which the Director or his designee may request to determine whether cause exists for modifying, revoking and re-issuing, suspending, or terminating this permit, in whole or in part, or to determine compliance with this permit.

5.

Cooling Water and Boiler Water Additives

a.

The permittee shall notify the Director in writing not later than thirty (30) days prior to instituting the use of any biocide corrosion inhibitor or chemical additive in a cooling or boiler system, not identified in the application for this permit, from which discharge is allowed by this permit. Notification is not required for additives that do not contain a heavy metal(s) as an active ingredient and that pass through a wastewater treatment system prior to discharge nor is notification required for additives that should not reasonably be expected to cause the cooling water or boiler water to exhibit toxicity as determined by analysis of manufacturer's data or testing by the permittee. Such notification shall include:

(1) name and general composition ofbiocide or chemical; (2) 96-hour median tolerance limit data for organisms representative of the biota of the waterway into which the discharge will ultimately reach; (3) quantities to be used; (4) frequencies of use; (5) proposed discharge concentrations; and (6) EPA registration number, if applicable.

b.

The use of a biocide or additive containing tributyl tin, tributyl tin oxide, zinc, chromium or related compounds in cooling or boiler system(s), from which a discharge regulated by this permit occurs, is prohibited except as exempted below. The use of a biocide or additive containing zinc, chromium or related compounds may be used in special circumstances if (1) the permit contains limits for these substances, or (2) the applicant demonstrates during the application process that the use of zinc, chromium or related compounds as a biocide or additive will not pose a reasonable potential to violate the applicable State water quality standards for these substances. The use of any additive, not identified in this permit or in the

NPDES PERMIT NUMBER AL0024619 PART I: DISCHARGE LIMITATIONS, CONDITIONS, AND REQUIREMENTS Page 29 of 46 application for this permit or not exempted from notification under this permit is prohibited, prior to a determination by the Department that perm it modification to control discharge of the additive is not required or prior to issuance of a permit modification controlling discharge of the additive.

6.

Permit Issued Based on Estimated Characteristics

a. If this permit was issued based on estimates of the characteristics of a process discharge reported on an EPA NPDES Application Form 2D (EPA Form 3510-2D), the permittee shall complete and submit an EPA NPDES Application Form 2C (EPA Form 3510-2C) no later than two years after the date that discharge begins. Sampling required for completion of the Form 2C shall occur when a discharge(s) from the process(s) causing the new or increased discharge is occurring. If this permit was issued based on estimates concerning the composition of a stormwater discharge(s), the permittee shall perform the sampling required by EPA NPDES Application Form 2F (EPA Form 3510-2F) no later than one year after the industrial activity generating the stormwater discharge has been fully initiated.

b.

This permit shall be reopened if required to address any new information resulting from the completion and submittal of the Form 2C and or 2F.

E. SCHEDULE OF COMPLIANCE

1.

The permittee shall achieve compliance with the discharge limitations specified in Provision I. A. in accordance with the following schedule:

COMPLIANCE SHALL BE ATTAINED ON THE EFFECTIVE DATE OF THIS PERMIT

2.

No later than 14 calendar days following a date identified in the above schedule of compliance, the permittee shall submit either a report of progress or, in the case of specific actions being required by identified dates, a written notice of compliance or noncompliance. In the latter case, the notice shall include the cause of noncompliance, any remedial actions taken, and the probability of meeting the next scheduled requirement.

NPDES PERl"IIT NUMBER AL0024619 Page 30 of 46 PART II: OTHER REQUIREMENTS, RESPONSIBILITIES, AND DUTIES A. OPERATIONAL AND MANAGEMENT REQUIREMENTS

1.

Facilities Operation and Maintenance 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 the permit. Proper operation and maintenance includes effective performance, adequate funding, adequate operator staffing and training, and adequate laboratory and process controls, including appropriate quality assurance procedures. This provision requires the operation of backup or auxiliary facilities only when necessary to achieve compliance with the conditions of the permit.

2.

Best Management Practices

a.

Dilution water shall not be added to achieve compliance with discharge limitations except when the Director or his designee has granted prior written authorization for dilution to meet water quality requirements.

b.

The permittee shall prepare, implement, and maintain a Spill Prevention, Control and Countermeasures (SPCC) Plan in accordance with 40 C.F.R. Section 112 ifrequired thereby.

c.

The permittee shall prepare, submit for approval and implement a Best Management Practices (BMP) Plan for containment of any or all process liquids or solids, in a manner such that these materials do not present a significant potential for discharge, if so required by the Director or his designee. When submitted and approved, the BMP Plan shall become a part of this permit and all requirements of the BMP Plan shall become requirements of this permit.

3.

Spill Prevention, Control, and Management The permittee shall provide spill prevention, control, and/or management sufficient to prevent any spills of pollutants from entering a water of the state or a publicly or privately owned treatment works. Any containment system used to implement this requirement shall be constructed of materials compatible with the substance(s) contained and which shall prevent the contamination of groundwater and such containment system shall be capable of retaining a volume equal to 110 percent of the capacity of the largest tank for which containment is provided.

B. OTHER RESPONSIBILITIES

1.

Duty to Mitigate Adverse Impacts The permittee shall promptly take all reasonable steps to mitigate and minimize or prevent any adverse impact on human health or the environment resulting from noncompliance with any discharge limitation specified in Provision I. A. of this permit, including such accelerated or additional monitoring of the discharge and/or the receiving waterbody as necessary to determine the nature and impact of the noncomplying discharge.

(

2.

Right of Entry and Inspection The permittee shall allow the Director, or an authorized representative, upon the presentation of proper credentials and other documents as may be required by law to:

a.

enter upon the permittee's premises where a regulated facility or activity or point source is located or conducted, or where records must be kept under the conditions of the permit;

b.

have access to and copy, at reasonable times, any records that must be kept under the conditions of the permit;

c.

inspect any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under the permit; and

d. sample or monitor, for the purposes of assuring permit compliance or as otherwise authorized by the A WPCA, any substances or parameters at any location.

C. BYPASS AND UPSET

1.

Bypass

a.

Any bypass is prohibited except as provided in b. and c. below:

b.

A bypass is not prohibited if:

NPDES PERMIT NUMBER AL0024619 PART II: OTHER REQUIREMENTS, RESPONSIBILITIES, AND DUTIES

(]) It does not cause any discharge limitation specified in Provision I. A. of this pennit to be exceeded; (2) It enters the same receiving stream as the pennitted outfall; and Page 31 of 46 (3) It is necessary for essential maintenance of a treatment or control facility or system to assure efficient operation of such facility or system.

c.

A bypass is not prohibited and need not meet the discharge limitations specified in Provision I. A. of this permit if:

(1) It is unavoidable to prevent loss of life, personal injury, or severe property damage; (2) There are 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 (t~is condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during nonnal periods of equipment downtime or preventive maintenance); and (3) The pennittee submits a written request for authorization to bypass to the Director at least ten (10) days prior to the anticipated bypass (if possible), the permittee is granted such authorization, and the pennittee complies with any conditions imposed by the Director to minimize any adverse impact on human health or the environment resulting from the bypass.

d.

The permittee has the burden of establishing that each of the conditions of Provision II.C. l.b. or c. have been met to qualify for an exception to the general prohibition against bypassing contained in a. and an exemption, where applicable, from the discharge limitations specified in Provision I. A. of this permit.

2.

Upset

a.

A discharge which results from an upset need not meet the discharge limitations specified in Provision I. A. of this permit if:

(1) No later than 24-hours after becoming aware of the occurrence of the upset, the pennittee orally reports the occurrence and circumstances of the upset to the Director or his designee; and (2) No later than five (5) days after becoming aware of the occurrence of the upset, the permittee furnishes the Director with evidence, including properly signed, contemporaneous operating logs, or other relevant evidence, demonstrating that (i) an upset occurred; (ii) the permittee can identify the specific cause(s) of the upset; (iii) the permittee's facility was being properly operated at the time of the upset; and (iv) the permittee promptly took all reasonable steps to minimize any adverse impact on human health or the environment resulting from the upset.

b.

The pennittee has the burden of establishing that each of the conditions of Provision II. C.2.a. of this permit have been met to qualify for an exemption from the discharge limitations specified in Provision I.A. of this permit.

D. DUTY TO COMPLY WITH PERMIT, RULES, AND STATUTES

1.

Duty to Comply

a.

The permittee must comply with all conditions of this pennit. Any permit noncompliance constitutes a violation of the A WPCA and the FWPCA and is grounds for enforcement action, for pennit tennination, revocation and reissuance, suspension, modification; or denial of a pennit renewal application.

b.

The necessity to halt or reduce production or other activities in order to maintain compliance with the conditions of the permit shall not be a defense for a permittee in an enforcement action.

c.

The discharge of a pollutant from a source not specifically identified in the permit application for this permit and not specifically included in the description of an outfall in this permit is not authorized and shall constitute noncompliance with this permit.

d.

The permittee shall take all reasonable steps, including cessation of production or other activities, to minimize or prevent any violation of this permit or to minimize or prevent any adverse impact of any permit violation.

e.

Nothing in this permit shall be construed to preclude and negate the pennittee's responsibility or liability to apply for, obtain, or comply with other ADEM, Federal, State, or Local Government permits, certifications, licenses, or other approvals.

NPDES PERMIT NUMBER AL0024619 PART 11: OTHER REQUIREMENTS, RESPONSIBILITIES, AND DUTIES Page 32 of 46

2.

Removed Substances Solids, sludges, filter backwash, or any other pollutant or other waste removed in the course of treatment or control of wastewaters shall be disposed of in a manner that complies with all applicable Department Rules.

3.

Loss or Failure of Treatment Facilities Upon the loss or failure of any treatment facilities, including but not limited to the loss or failure of the primary source of power of the treatment facility, the permittee shall, where necessary to maintain compliance with the discharge limitations specified in Provision I. A. of this permit, or any other terms or conditions of this permit, cease, reduce, or otherwise control production and/or all discharges until treatment is restored. If control of discharge during loss or failure of the primary source of power is to be accomplished by means of alternate power sources, standby generators, or retention of inadequately treated effluent, the permittee must furnish to the Director within six months a certification that such control mechanisms have been installed.

4.

Compliance with Statutes and Rules

a.

This permit has been issued under ADEM Administrative Code, Chapter 335-6-6. All provisions of this chapter, that are applicable to this permit, are hereby made a part of this permit. A copy of this chapter may be obtained for a small charge from the Office of General Counsel, Alabama Department of Environmental Management, 1400 Coliseum Blvd.,

Montgomery, AL 36130.

b.

This permit does not authorize the noncompliance with or violation of any Laws of the State of Alabama or the United States of America or any regulations or rules implementing such laws. FWPCA, 33 U.S.C. Section 1319, and Code of Alabama 1975, Section 22-22-14.

E. PERMIT TRANSFER, MODIFICATION, SUSPENSION, REVOCATION, AND REISSUANCE

1.

Duty to Reapply or Notify of Intent to Cease Discharge

a. If the permittee intends to continue to discharge beyond the expiration date of this permit, the permittee shall file a complete permit application for re issuance of this permit at least 180 days prior to its expiration. If the permittee does not intend to continue discharge beyond the expiration of this permit, the permittee shall submit written notification of this intent which shall be signed by an individual meeting the signatory requirements for a permit application as set forth in ADEM Administrative Code Rule 335-6-6-.09.

b.

Failure of the permittee to apply for reissuance at least 180 days prior to permit expiration will void the automatic continuation of the expiring permit provided by ADEM Administrative Code Rule 335-6-6-.06 and should the permit not be reissued for any reason any discharge after expiration of this permit will be an unpermitted discharge.

2.

Change in Discharge

a.

The permittee shall apply for a permit modification at least 180 days in advance of any facility expansion, production increase, process change, or other action that could result in the discharge of additional pollutants or increase the quantity of a discharged pollutant such that existing permit limitations would be exceeded or that could result in an additional discharge point. This requirement applies to pollutants that are or that are not subject to discharge limitations in this permit.

No new or increased discharge may begin until the Director has authorized it by issuance of a permit modification or a reissued permit.

b.

The permittee shall notify the Director as soon as it is known or there is reason to believe:

(I) That any activity has occurred or will occur which would result in the discharge on a routine or frequent basis, of any toxic pollutant which is not limited in this permit, if that discharge will exceed the highest of the following notification levels:

(i) one hundred micrograms per liter; (ii) two hundred micrograms per liter for acrolein and acrylonitrile; five hundred micrograms per liter for 2,4-dinitrophenol and for 2-methyl-4,6-dini-trophenol; and one milligram per liter for antimony; (iii) five times the maximum concentration value reported for that pollutant in the permit application; or (2) 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 which is not limited in the permit, if that discharge will exceed the highest of the following notification levels:

NPDES PERMIT NUMBER AL0024619 PART II: OTHER REQUIREMENTS, RESPONSIBILITIES, AND DUTIES (i) five hundred micrograms per liter; (ii) one milligram per liter for antimony; (iii) ten times the maximum concentration value reported for that pollutant in the permit application.

3.

Transfer of Permit Page 33 of 46 This permit may not be transferred or the name of the permittee changed without notice to the Director and subsequent modification or revocation and reissuance of the permit to identify the new permittee and to incorporate any other changes as may be required under the FWPCA or A WPCA. In the case of a change in name, ownership or control of the permittee's premises only, a request for permit modification in a format acceptable to the Director is required at least 30 days prior to the change. In the case of a change in name, ownership or control of the permittee's premises accompanied by a change or proposed change in effluent characteristics, a complete permit application is required to be submitted to the Director at least 180 days prior to the change. Whenever the Director is notified of a change in name, ownership or control, he may decide not to modify the existing permit and require the submission of a new permit application.

4.

Permit Modification and Revocation

a.

This permit may be modified or revoked and reissued, in whole or in part, during its term for cause, including but not limited to, the following:

(I) If cause for termination under Provision ILE. 5. of this permit exists, the Director may choose to revoke and reissue this permit instead of terminating the permit; (2) If a request to transfer this permit has been received, the Director may decide to revoke and reissue or to modify the permit; or (3) If modification or revocation and re issuance is requested by the permittee and cause exists, the Director may grant the request.

b.

This permit may be modified during its term for cause, including but not limited to, the following:

(I) If cause for termination under Provision ILE. 5. of this permit exists, the Director may choose to modify this permit instead of terminating this permit; (2) There are material and substantial alterations or additions to the facility or activity generating wastewater which occurred after permit issuance which justify the application of permit conditions that are different or absent in the existing permit; (3) The Director has received new information that was not available at the time of permit issuance and that would have justified the application of different permit conditions at the time of issuance; (4) A new or revised requirement(s) of any applicable standard or limitation is promulgated under Sections 30l(b)(2)(C),

(D), (E), and (F), and 307(a)(2) of the FWPCA; (5) Errors in calculation of discharge limitations or typographical or clerical errors were made; (6) To the extent allowed by ADEM Administrative Code, Rule 335-6-6-.17, when the standards or regulations on which the permit was based have been changed by promulgation of amended standards or regulations or by judicial decision after the permit was issued; (7) To the extent allowed by ADEM Administrative Code, Rule 335-6-6-.17, permits may be modified to change compliance schedules; (8) To agree with a granted variance under 30l(c), 301(g), 301(h), 30l(k), or 316(a) of the FWPCA or for fundamentally different factors; (9) To incorporate an applicable 307(a) FWPCA toxic effluent standard or prohibition; (10) When required by the reopen er conditions in this permit; (11) When required under 40 CFR 403.8( e) ( compliance schedule for development of pretreatment program);

L NPDES PERMIT NUMBER AL0024619 PART II: OTHER REQUIREMENTS, RESPONSIBILITIES, AND DUTIES Page 34 of 46 (12)Upon failure of the state to notify, as required by Section 402(b)(3) of the FWPCA, another state whose waters may be affected by a discharge permitted by this permit;

( 13) When required to correct technical mistakes, such as errors in calculation, or mistaken interpretations of law made in determining permit conditions; or (14) When requested by the permittee and the Director determines that the modification has cause and will not result in a violation of federal or state law, regulations or rules.

5.

Permit Termination This permit may be terminated during its term for cause, including but not limited to, the following:

a.

Violation of any term or condition of this permit;

b.

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

c.

Materially false or inaccurate statements or information in the permit application or the permit;

d.

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

e.

The permittee's discharge threatens human life or welfare or the maintenance of water quality standards;

f.

Permanent closure of the facility generating the wastewater permitted to be discharged by this permit or permanent cessation of wastewater discharge;

g. New or revised requirements of any applicable standard or limitation that is promulgated under Sections 301(b)(2)(C),

(D), (E), and (F), and 307(a)(2) of the FWPCA that the Director determines cannot be complied with by the permittee; or

h.

Any other cause allowed by the ADEM Administrative Code, Chapter 335-6-6.

6.

Permit Suspension This permit may be suspended during its term for noncompliance until the permittee has taken action(s) necessary to achieve compliance.

7.

Request for Permit Action Does Not Stay Any Permit Requirement The filing of a request by the permittee for modification, suspension or revocation of this permit, in whole or in part, does not stay any permit term or condition.

F. COMPLIANCE WITH TOXIC POLLUTANT STANDARD OR PROHIBITION If any applicable effluent standard or prohibition (including any schedule of compliance specified in such effluent standard or prohibition) is established under Section 307(a) of the FWPCA, 33 U.S.C. Section 13 I 7(a), for a toxic pollutant discharged by the permittee and such standard or prohibition is more stringent than any discharge limitation on the pollutant specified in Provision I.

A. of this permit, or controls a pollutant not limited in Provision I. A. of this permit, this permit shall be modified to conform to the toxic pollutant effluent standard or prohibition and the permittee shall be notified of such modification. If this permit has not been modified to conform to the toxic pollutant effluent standard or prohibition before the effective date of such standard or prohibition, the permittee shall attain compliance with the requirements of the standard or prohibition within the time period required by the standard or prohibition and shall continue to comply with the standard or prohibition until this permit is modified or reissued.

G. DISCHARGE OF WASTEWATER GENERA TED BY OTHERS The discharge of wastewater, generated by any process, facility, or by any other means not under the operational control of the permittee or not identified in the application for this permit or not identified specifically in the description of an outfall in this permit is not authorized by this permit.

NPDES PERMIT NUMBER AL0024619 Page 35 of 46 PART III: OTHER PERMIT CONDITIONS A. CIVIL AND CRIMINAL LIABILITY

1.

Tampering Any person who falsifies, tampers with, or knowingly renders inaccurate any monitoring device or method required to be maintained or performed under the permit shall, upon conviction, be subject to penalties as provided by the A WPCA.

2.

False Statements 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 shall, upon conviction, be subject to penalties as provided by the A WPCA.

3.

Permit Enforcement

a.

Any NPDES permit issued or reissued by the Department is a permit for the purpose of the A WPCA and the FWPCA and as such any terms, conditions, or limitations of the permit are enforceable under state and federal law.

b. Any person required to have a NPDES permit pursuant to ADEM Administrative Code Chapter 335-6-6 and who discharges pollutants without said permit, who violates the conditions of said permit, who discharges pollutants in a manner not authorized by the permit, or who violates applicable orders of the Department or any applicable rule or standard of the Department, is subject to any one or combination of the following enforcement actions under applicable state statutes.

(1) An administrative order requiring abatement, compliance, mitigation, cessation, clean-up, and/or penalties; (2) An action for damages; (3) An action for injunctive relief; or (4) An action for penalties.

c.

If the permittee is not in compliance with the conditions of an expiring or expired permit the Director may choose to do any or all of the following provided the permittee has made a timely and complete application for reissuance of the permit:

(l) initiate enforcement action based upon the permit which has been continued; (2) issue a notice of intent to deny the permit reissuance. If the permit is denied, the owner or operator would then be required to cease the activities authorized by the continued permit or be subject to enforcement action for operating without a permit; (3) reissue the new permit with appropriate conditions; or (4) take other actions authorized by these rules and A WPCA.

4.

Relief from Liability Except as provided in Provision 11.C. l (Bypass) and Provision 11.C.2 (Upset), nothing in this permit shall be construed to relieve the permittee of civil or criminal liability under the A WPCA or FWPCA for noncompliance with any term or condition of this permit.

B. 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 FWPCA, 33 U.S.C.

Section 13 21.

C. PROPERTY AND OTHER RIGHTS This permit does not convey any property rights in either real or personal property, or any exclusive privileges, nor does it authorize any injury to persons or property or invasion of other private rights, trespass, or any infringement of federal, state, or local laws or regulations, nor does it authorize or approve the construction of any physical structures or facilities or the undertaking of any work in any waters of the state or of the United States.

NPDES PERMIT NUMBER AL0024619 PART III: OTHER PERMIT CONDITIONS D. AVAILABILITY OF REPORTS Page 36 of 46 Except for data determined to be confidential under Code of Alabama 1975, Section 22-22-9(c), all reports prepared in accordance with the terms of this permit shall be available for public inspection at the offices of the Department. Effluent data shall not be considered confidential.

E. EXPIRATION OF PERMITS FOR NEW OR INCREASED DISCHARGES

l. If this permit was issued for a new discharger or new source, this permit shall expire eighteen months after the issuance date if construction of the facility has not begun during the eighteen-month period.

2. If this permit was issued or modified to allow the discharge of increased quantities of pollutants to accommodate the modification of an existing facility and if construction of this modification has not begun during the eighteen month period after issuance of this permit or permit modification, this permit shall be modified to reduce the quantities of pollutants allowed to be discharged to those levels that would have been allowed if the modification of the facility had not been planned.

3.

Construction has begun when the owner or operator has:

a.

begun, or caused to begin as part of a continuous on-site construction program:

(1) any placement, assembly, or installation of facilities or equipment; or (2) significant _site preparation work including clearing, excavation, or removal of existing buildings, structures, or facilities which is necessary for the placement, assembly, or installation of new source facilities or equipment; or

b.

entered into a binding contractual obligation for the purpose of placement, assembly, or installation of facilities or equipment which are intended to be used in its operation within a reasonable time. Options to purchase or contracts which can be terminated or modified without substantial loss, and contracts for feasibility, engineering, and design studies do not constitute a contractual obligation under the paragraph. The entering into a lease with the State of Alabama for exploration and production of hydrocarbons shall also be considered beginning construction.

F. COMPLIANCE WITH WATER QUALITY STANDARDS

1.

On the basis of the permittee's application, plans, or other available information, the Department has determined that compliance with the terms and conditions of this permit should assure compliance with the applicable water quality standards.

2.

Compliance with permit terms and conditions notwithstanding, if the permittee's discharge(s) from point sources identified in Provision I. A. of this permit cause or contribute to a condition in contravention of state water quality standards, the Department may require abatement action to be taken by the permittee in emergency situations or modify the permit pursuant to the Department's Rules, or both.

3.

If the Department determines, on the basis of a notice provided pursuant to this permit or any investigation, inspection or sampling, that a modification of this permit is necessary to assure maintenance of water quality standards or compliance with other provisions of the A WPCA or FWPCA, the Department may require such modification and, in cases of emergency, the Director may prohibit the discharge until the permit has been modified.

G. GROUNDWATER Unless specifically authorized under this permit, this permit does not authorize the discharge of pollutants to groundwater. Should a threat of groundwater contamination occur, the Director may require groundwater monitoring to properly assess the degree of the problem and the Director may require that the Permittee undertake measures to abate any such discharge and/or contamination.

H. DEFINITIONS I.

Average monthly discharge limitation - means the highest allowable average of "daily discharges" over a calendar month, calculated as the sum of all "daily discharges" measured during a calendar month divided by the number of "daily discharges" measured during that month (zero discharge days shall not be included in the number of "daily discharges" measured and a less than detectable test result shall be treated as a concentration of zero if the most sensitive EPA approved method was used).

2.

Average weekly discharge limitation - means the highest allowable average of "daily discharges" over a calendar week, calculated as the sum of all "daily discharges" measured during a calendar week divided by the number of "daily discharges" measured during that week (zero discharge days shall not be included in the number of"daily discharges" measured and a Jess than detectable test result shall be treated as a concentration of zero if the most sensitive EPA approved method was used).

NPDES PERMIT NUMBER AL0024619 PART III: OTHER PERMIT CONDITIONS Page37 of46

3.

Arithmetic Mean - means the summation of the individual values of any set of values divided by the number of individual values.

4.

A WPCA - means the Alabama Water Pollution Control Act.

5. BOD-means the five-day measure of the pollutant parameter biochemical oxygen demand.

6.

Bypass - means the intentional diversion of waste streams from any portion of a treatment facility.

7.

CBOD - means the five-day measure of the pollutant parameter carbonaceous biochemical oxygen demand.

8.

Daily discharge - means the discharge of a pollutant measured during any consecutive 24-hour period in accordance with the sample type and analytical methodology specified by the discharge permit.

9.

Daily maximum - means the highest value of any individual sample result obtained during a day.

I 0. Daily minimum - means the lowest value of any individual sample result obtained during a day.

11. Day - means any consecutive 24-hour period.

12. Department - means the Alabama Department of Environmental Management.

13. Director - means the Director of the Department.

14. Discharge - means "[t]he addition, introduction, leaking, spilling or emitting of any sewage, industrial waste, pollutant or other wastes into waters of the state". Code of Alabama 1975, Section 22-22-l(b)(8).

15. Discharge Monitoring Report (DMR) - means the form approved by the Director to accomplish reporting requirements of an NPDES permit.

16. DO - means dissolved oxygen.

17. 8HC - means 8-hour composite sample, including any of the following:

a.

The mixing of at least 5 equal volume samples collected at constant time intervals of not more than 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months over a period of not less than 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months between the hours of 6:00 a.m. and 6:00 p.m. If the sampling period exceeds 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , sampling may be conducted beyond the 6:00 a.m. to 6:00 p.m. period.

b.

A sample continuously collected at a constant rate over period of not less than 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months between the hours of 6:00 a.m. and 6:00 p.m. If the sampling period exceeds 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , sampling may be conducted beyond the 6:00 a.m. to 6:00 p.m. period.

18. EPA - means the United States Environmental Protection Agency.

19. FC - means the pollutant parameter fecal coliform.

20. Flow - means the total volume of discharge in a 24-hour period.

21. FWPCA - means the Federal Water Pollution Control Act.

22. Geometric Mean - means the Nth root. of the product of the individual values of any set of values where N is equal to the number of individual values. The geometric mean is equivalent to the antilog of the arithmetic mean of the logarithms of the individual values. For purposes of calculating the geometric mean, values of zero (0) shall be considered one (1 ).

23. Grab Sample - means a single influent or effluent portion which is not a composite sample. The sample(s) shall be collected at the period(s) most representative of the discharge.

24. Indirect Discharger - means a nondomestic discharger who discharges pollutants to a publicly owned treatment works or a privately owned treatment facility operated by another person.

25. Industrial User - means those industries identified in the Standard Industrial Classification manual, Bureau of the Budget 1967, as amended and supplemented, under the category "Division D - Manufacturing" and such other classes of significant waste producers as, by regulation, the Director deems appropriate.

26. MGD - means million gallons per day.

NPDES PERMIT NUMBER AL0024619 PART III: OTHER PERMIT CONDITIONS Page 38 of 46

27. Monthly Average-means, other than for fecal coliform bacteria, the arithmetic mean of the entire composite or grab samples taken for the daily discharges collected in one month period. The monthly average for fecal coliform bacteria is the geometric mean of daily discharge samples collected in a one month period. The monthly average for flow is the arithmetic mean of all flow measurements taken in a one month period.

28. New Discharger - means a person, owning or operating any building, structure, facility or installation:

a.

from which there is or may be a discharge of pollutants;

b.

that did not commence the discharge of pollutants prior to August 13, 1979, and which is not a new source; and

c.

which has never received a final effective NPDES permit for dischargers at that site.

29. NH3-N - means the pollutant parameter ammonia, measured as nitrogen.

30. Permit application - means forms and additional information that is required by ADEM Administrative Code Rule 335-6-6-.08 and applicable permit fees.

31. Point source - means "any discernible, confined and discrete conveyance, including but not limited to any pipe, channel, ditch, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operation, or vessel or other floating craft,... from which pollutants are or may be discharged." Section 502(14) of the FWPCA, 33 U.S.C. Section 1362(14).

32. Pollutant - includes for purposes of this permit, but is not limited to, those pollutants specified in Code of Alabama 1975, Section 22-22-1 (b )(3) and those effluent characteristics specified in Provision I. A. of this permit.

33. Privately Owned Treatment Works - means any devices or system which is used to treat wastes from any facility whose operator is not the operator of the treatment works, and which is not a "POTW.

34. Publicly Owned Treatment Works - means a wastewater collection and treatment facility owned by the State, municipality, regional entity composed of two or more municipalities, or another entity created by the State or local authority for the purpose of collecting and treating municipal wastewater.

35. Receiving Stream -means the "waters" receiving a "discharge" from a "point source".

36. Severe property damage - means substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which 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.

37. Significant Source - means a source which discharges 0.025 MGD or more to a POTW or greater than five percent of the treatment work's capacity, or a source which is a primary industry as defined by the U.S. EPA or which discharges a priority or toxic pollutant.

38. Solvent - means any virgin, used or spent organic solvent(s) identified in the F-Listed wastes (FOO! through F005) specified in 40 CFR 261.31 that is used for the purpose of solubilizing other materials.

39. TKN - means the pollutant parameter Total Kjeldahl Nitrogen.

40. TON - means the pollutant parameter Total Organic Nitrogen.

41. TRC - means Total Residual Chlorine.

42. TSS - means the pollutant parameter Total Suspended Solids.

43. 24HC -means 24-hour composite sample, including any of the following:

a.

the mixing of at least 12 equal volume samples collected at constant time intervals of not more than 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months over a period of24 hours;

b.

a sample collected over a consecutive 24-hour period using an automatic sampler composite to one sample. As a minimum, samples shall be collected hourly and each shall be no more than one twenty-fourth (1/24) of the total sample volume collected; or

c.

a sample collected ov,er a consecutive 24-hour period using an automatic composite sampler composited proportional to flow.

NPDES PERMIT NUMBER AL0024619 PART III: OTHER PERMIT CONDITIONS Page 39 of 46

44. Upset - means an exceptional incident in which there is an unintentional and temporary noncompliance with technology-based permit discharge 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.

45. Waters - means "[a]ll waters of any river, stream, watercourse, pond, lake, coastal, ground or surface water, wholly or partially within the state, natural or artificial. This does not include waters which are entirely confined and retained completely upon the property of a single individual, partnership or corporation unless such waters are used in interstate commerce." Code of Alabama 1975, Section 22-22-l(b)(2). Waters "include all navigable waters" as defined in Section 502(7) of the FWPCA, 22 U.S.C. Section 1362(7), which are within the State of Alabama.

46. Week - means the period beginning at twelve midnight Saturday and ending at twelve midnight the following Saturday.

47. Weekly (7-day and calendar week) Average - is the arithmetic mean of all samples collected during a consecutive 7-day period or calendar week, whichever is applicable. The calendar week is defined as beginning on Sunday and ending on Saturday.

Weekly averages shall be calculated for all calendar weeks with Saturdays in the month. If a calendar week overlaps two months (i.e., the Sunday is in one month and the Saturday in the following month), the weekly average calculated for the calendar week shall be included in the data for the month that contains the Saturday.

I.

SEVERABILITY The provisions of this permit are severable, and if any provision of this permit or the application of any provision of this permit to any circumstance is held invalid, the application of such provision to other circumstances, and the remainder of this permit, shall not be affected thereby.

NPDES PERMIT NUMBER AL0024619 PART IV: ADDITIONAL REQUIREMENTS, CONDITIONS, AND LIMITATIONS A. BEST MANAGEMENT PRACTICES (BMP) PLAN REQUIREMENTS

1.

BMPPlan Page 40 of 46 The permittee shall develop and implement a Best Management Practices (BMP) Plan which prevents, or minimizes the potential for, the release of pollutants from ancillary activities, including material storage areas; plant site runoff; in-plant transfer, process and material handling areas; loading and unloading operations, and sludge and waste disposal areas, to the waters'ofthe State through plant site runoff; spillage or leaks; sludge or waste disposal; or drainage from raw material storage.

2.

Plan Content The permittee shall prepare and implement a best management practices (BMP) plan, which shall:

a.

Establish specific objectives for the control of pollutants:

(I) Each facility component or system shall be examined for its potential for causing a release of significant amounts of pollutants to waters of the State due to equipment failure, improper operation, natural phenomena such as rain or snowfall, etc.

(2) Where experience indicates a reasonable potential for equipment failure (e.g., a tank overflow or leakage), natural condition (e.g. precipitation), or circumstances to result in significant amounts of pollutants reaching surface waters, the plan should include a prediction of the direction, rate of flow, and total quantity of pollutants which could be discharged from the facility as a result of each condition or circumstance.

b. Establish specific best management practices to meet the objectives identified under paragraph a. of this section, addressing each component or system capable of causing a release of significant amounts of pollutants to the waters of the State, and identifying specific preventative or remedial measures to be implemented;

c.

Establish a program to identify and repair leaking equipment items and damaged containment structures, which may contribute to contaminated stormwater runoff. This program must include regular visual inspections of equipment, containment structures and of the facility in general to ensure that the BMP is continually implemented and effective;

d. Prevent the spillage or loss of fluids, oil, grease, gasoline, etc. from vehicle and equipment maintenance activities and thereby prevent the contamination of stormwater from these substances;

e.

Prevent or minimize stormwater contact with material stored on site;

f.

Designate by position or name the person or persons responsible for the day to day implementation of the BMP;

g. Provide for routine inspections, on days during which the facility is manned, of any structures that function to prevent stormwater pollution or to remove pollutants from stormwater and of the facility in general to ensure that the BMP is continually implemented and effective;

h.

Provide for the use and disposal of any material used to absorb spilled fluids that could contaminate stormwater;

i.

Develop a solvent management plan, if solvents are used on site. The solvent management plan shall include as a minimum lists of the solvents on site; the disposal method of solvents used instead of dumping, such as reclamation, contract hauling; and the procedures for assuring that solvents do not routinely spill or leak into the stormwater;

j.

Provide for the disposal of all used oils, hydraulic fluids, firefighting foams, solvent degreasing material, etc. in accordance with good management practices and any applicable state or federal regulations;

k. Include a diagram of the facility showing the locations where stormwater exits the facility, the locations of any structure or other mechanisms intended to prevent pollution of stormwater or to remove pollutants from stormwater, the locations of any collection and handling systems;

1.

Provide control sufficient to prevent or control pollution of stormwater by soil particles to the degree required to maintain compliance with the water quality standard for turbidity applicable to the waterbody(s) receiving discharge(s) under this permit;

m. Provide spill prevention, control, and/or management sufficient to prevent or minimize contaminated stormwater runoff.

Any containment system used to implement this requirement shall be constructed of materials compatible with the

NPDES PERMIT NUMBER AL0024619 PART IV: ADDITIONAL REQUffiEMENTS, CONDITIONS, AND LIMITATIONS Page 41 of 46 substance(s) contained and shall prevent the contamination of groundwater. The containment system shall also be capable ofretaining a volume equal to 110 percent of the capacity of the largest tank for which containment is provided;

n. Provide and maintain curbing, diking or other means of isolating process areas to the extent necessary to allow segregation and collection for treatment of contaminated stormwater from process areas;

o. Be reviewed by plant engineering staff and the plant manager; and

p. Bear the signature of the plant manager.

3.

Compliance Schedule The permittee shall have reviewed (and revised if necessary) and fully implemented the BMP plan as soon as practicable but no later than six months after the effective date of this permit.

4.

Department Review

a.

When requested by the Director or his designee, the permittee shall make the BMP available for Department review.

b.

The Director or his designee may notify the permittee at any time that the BMP is deficient and require correction of the deficiency.

c.

The permittee shall correct any BMP deficiency identified by the Director or his designee within 30 days of receipt of notification and shall certify to the Department that the correction has been made and implemented.

5.

Administrative Procedures

a.

A copy of the BMP shall be maintained at the facility and shall be available for inspection by representatives of the Department.

b.

A log of the routine inspection required above shall be maintained at the facility and shall be available for inspection by representatives of the Department. The log shall contain records of all inspections performed for the last three years and each entry shall be signed by the person performing the inspection.

c.

The permittee shall provide training for any personnel required to implement the BMP and shall retain documentation of such training at the facility. This documentation shall be available for inspection by representatives of the Department.

Training shall be performed prior to the date that implementation of the BMP is required.

d. BMP Plan Modification. The permittee shall amend the BMP plan whenever there is a change in the facility or change in operation of the facility which materially increases the potential for the ancillary activities to result in a discharge of significant amounts of pollutants.

e.

BMP Plan Review. The permittee shall complete a review and evaluation of the BMP plan at least once every three years from the date of preparation of the BMP plan. Documentation of the BMP Plan review and evaluation shall be signed and dated by the Plant Manager.

B. STORMW ATER FLOW MEASUREMENT AND SAMPLING REQUIREMENTS

1.

Stormwater Flow Measurement

a.

All stormwater samples shall be collected from the discharge resulting from a storm event that is greater than 0.1 inches.

b. The total volume of stormwater discharged for the event must be monitored, including the date and duration (in hours) and rainfall (in inches) for storm event(s) sampled. The duration between the storm event sampled and the end of the previous measurable (greater than 0.1 inch rainfall) stonn event must be a minimum of72 hours. This information must be recorded as part of the sampling procedure and records retained according to Part LB. of this permit.

c.

The volume may be measured using flow measuring devices, or estimated based on a modification of the Rational Method using total depth of rainfall, the size of the drainage area serving a stonnwater outfall, and an estimate of the runoff coefficient of the drainage area. This information must be recorded as part of the sampling procedure and records retained according to Part LB. of this pennit.

NPDES PERMIT NUMBER AL0024619 PART IV: ADDITIONAL REQUIREMENTS, CONDITIONS, AND LIMITATIONS Page 42 of 46

2.

Stormwater Sampling

a.

A grab sample, if required by this permit, shall be taken during the first thirty minutes of the discharge ( or as soon thereafter as practicable); and a flow-weighted composite sample, ifrequired by this permit, shall be taken for the entire event or for the first three hours of the event.

b.

All test procedures will be in accordance with part LB. of this permit.

C.

EFFLUENT TOXICITY LIMITATIONS AND BIOMONITORING REQUIREMENTS I.

The permittee shall perform short-term chronic toxicity tests on the wastewater discharges required to be tested for chronic toxicity by Part I of this permit.

a.

Test Requirements (Screening Test)

(I) The samples shall be diluted using appropriate control water, to the Instream Waste Concentration (IWC) which is 6% effluent.

The IWC is the actual concentration of effluent, after mixing, in the receiving stream during a 7-day, I 0-year flow period.

(2) Any test result that shows a statistically significant reduction in survival, growth, or reproduction between the control and the test at the 95% confidence level indicate chronic toxicity and constitute noncompliance with this permit.

b.

General Test Requirements (I) A minimum of three (3) grab samples shall be obtained for use in the above biomonitoring tests and collected every other day so that the laboratory receives water samples on the first, third, and fifth day of the seven-day test period. The holding time for each grab sample shall not exceed 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months . The control water shall be a water prepared in the laboratory in accordance with the EPA procedure described in EPA 821-R-02-013 or the most current edition or another control water selected by the permittee and approved by the Department.

(2) Effluent toxicity tests in which the control survival is less than 80%, P. promelas dry weight per surviving control organism is less than 0.25 mg, Ceriodaphnia number of young per surviving control organism is less than 15, Ceriodaphnia reproduction where less than 60% of surviving control females produce three broods or in which the other requirements of the EPA Test Procedure are not met shall be unacceptable and the permittee shall rerun the tests as soon as practical within the monitoring period.

(3) In the event of an invalid test, upon subsequent completion of a valid test, the results of all tests, valid and invalid, are reported with an explanation of the tests performed and results.

d.

Reporting Requirements (I) The permittee shall notify the Department in writing within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months after toxicity has been demonstrated by the scheduled test(s).

(2) Biomonitoring test results obtained during each monitoring period shall be summarized and reported using the appropriate Discharge Monitoring Report (DMR) form approved by the Department. In accordance with Section 2 of this part, an effluent toxicity report containing the information in Section 2 shall be included with the DMR. Two copies of the test results must be submitted to the Department no later than 28 days after the month in which the tests were performed.

e.

Additional Testing Requirements (I) If chronic toxicity is indicated (noncompliance with permit limit), the permittee shall perform two additional valid chronic toxicity tests in accordance with these procedures to determine the extent and duration of the toxic condition. The toxicity tests shall run consecutively beginning on the first calendar week following the date on which the permittee became aware of the permit noncompliance and the results of these tests shall be submitted no later than 28 days following the month in which the tests were performed.

(2) After evaluation of the results of the follow-up tests, the Department will determine if additional action is appropriate and may require additional testing and/or toxicity reduction measures. The permittee may be required to perform a Toxicity Identification Evaluation (TIE) and/or a Toxicity Reduction Evaluation (TRE). The TIE/TRE shall be performed in accordance with the most recent protocols/guidance outlined by EPA (e.g., EPA/600/2-88/062, EPA/600/R-92/080, EPA/600/R-91-003, EPA/600/R-92/081, EPA/833/B-99/022 and/or EPA/600/6-9l/005F, etc.)

f.

Test Methods The tests shall be performed in accordance with the latest edition of the "EPA Short-Term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Water to Freshwater Organisms". The Larval Survival and Growth Test, Methods 1000.0, shall be used for the fathead minnow (Pimephales promelas) test and the Survival and Reproduction Test, Method I 002.0, shall be used for the cladoceran (Ceriodaphnia dubia) test.

NPDES PERMIT NUMBER AL0024619 PART IV: ADDITIONAL REQUIREMENTS, CONDITIONS, AND LIMITATIONS Page 43 of 46

2.

Effluent Toxicity Testing Reports The following information shall be submitted with each discharge monitoring report unless otherwise directed by the Department. The Department may at any time suspend or reinstate these requirements or may decrease or increase the frequency of submittals.

a.

Introduction (I) Facility name, location, and county (2) Permit number (3) Toxicity testing requirements of permit (4) Name of receiving water body (5) Contract laboratory information (if tests are performed under contract)

(a) Name of firm (b) Telephone number (c) Address (6) Objective oftest

b.

Plant Operation

( l) Discharge Operating schedule (if other than continuous)

(2) Volume of discharge during sample collection to include Mean daily discharge on sample collection dates (MGD, CFS, GPM)

(3) Design flow of treatment facility at time of sampling

c.

Source of Effluent and Dilution Water (I) Effluent samples (a) Sampling point (b) Sample collection dates and times (to include composite sample start and finish times)

(c) Sample collection method

( d) Physical and chemical data of undiluted effluent samples (water temperature, pH, alkalinity, hardness, specific conductance, total residual chlorine (if applicable), etc.)

(e) Lapsed time from sample collection to delivery (f) Lapsed time from sample collection to test initiation (g) Sample temperature when received at the laboratory (2) Dilution Water (a) Source (b) Collection/preparation date(s) and time(s)

( c) Pretreatment (if applicable)

(d) Physical and chemical characteristics (water temperature, pH, alkalinity, hardness, specific conductance, etc.)

d.

Test Conditions (1) Toxicity test method utilized (2) End point(s) oftest (3) Deviations from referenced method, if any, and reason(s)

(4) Date and time test started

NPDES PERMIT NUMBER AL0024619 PART IV: ADDITIONAL REQUffiEMENTS, CONDITIONS, AND LIMIT A TIO NS (5) Date and time test terminated (6) Type and volume oftest chambers (7) Volume of solution per chamber (8) Number of organisms per test chamber (9) Number of replicate test chambers per treatment (10) Test temperature, pH, and dissolved oxygen as recommended by the method (to include ranges)

(I 1) Specify if aeration was needed (12) Feeding frequency, amount, and type of food (13) Specify if(and how) pH control measures were implemented (14) Light intensity (mean)

e.

Test Organisms (1) Scientific name (2) Life stage and age (3) Source

( 4) Disease(s) treatment (if applicable)

f.

Quality Assurance

( 1) Reference toxicant utilized and source Page 44 of 46 (2) Date and time of most recent chronic reference toxicant test(s), raw data and current control chart(s). The most recent chronic reference toxicant test shall be conducted within 30 days of the routine.

(3) Dilution water utilized in reference toxicant test

( 4) Results of reference toxicant test(s) (NOEC, IC25, PASS/FAIL, etc.), report concentration response relationship and evaluate test sensitivity (5) Physical and chemical methods utilized

g.

Results

( 1) Provide raw toxicity data in tabular form, including daily records of affected organisms in each concentration (including controls) and replicate (2) Provide table of endpoints: NOECs, IC25s, PASS/FAIL, etc. (as required in the applicable NPDES permit)

(3) Indicate statistical methods used to calculate endpoints

( 4) Provide all physical and chemical data required by method (5) Results oftest(s) (NOEC, IC25, PASS/FAIL, etc.), report concentration-response relationship (definitive test only), report percent minimum significant difference (PMSD) calculated for sub-lethal endpoints determined by hypothesis testing.

h.

Conclusions and Recommendations (1) Relationship between test endpoints and permit limits (2) Actions to be taken Adapted from "Short-Term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms",

Fourth Edition, October 2002 (EPA 821-R-02-013), Section 10, Report Preparation

NPDES PERMIT NUMBER AL0024619 PART IV: ADDITIONAL REQUIREMENTS, CONDITIONS, AND LIMITATIONS Page 45 of 46 D. COOLING WATER INTAKE STRUCTURE (CWIS) REQUIREMENTS

l.

The cooling water intake structure used by the permittee has been evaluated using available information. At this time, the Department has determined that the cooling water intake structure represents the best technology available (BTA) to minimize adverse environmental impact in accordance with Section 316(b) of the Federal Clean Water Act (33 U.S.C. section 1326).

2.

The permittee shall submit the following information at least 180 days prior to expiration of the permit:

a.

design intake flow of the CWIS

b.

percentage of intake flow, based on highest monthly average in last 5 years, used for cooling purposes;

c.

an estimate of the intake flow reduction at the facility based upon the use of a l 00 percent ( or some lesser percentage) closed-cycle re-circulating cooling water system compared to a conventional once-through cooling water system

d. through screen design intake flow velocity

e.

any impingement and entrainment data that may have been collected based on the operation of the facility's CWIS, collected since the effective date of this NPDES permit f

a detailed description of any changes in the operations of the CWIS, or changes in the type of technologies used at the CWIS such as screens or other technologies affecting the rates of impingement and/or entrainment of fish and shellfish

3.

The permittee is required to operate and maintain the CWIS in a manner that minimizes impingement and entrainment levels.

Documentation detailing the steps that have and are being taken to minimize the impingement and entrainment levels shall be maintained on site and made available upon request.

4.

Nothing in this Permit authorizes take for the purposes of a facility compliance with the Endangered Species Act. Under the Endangered Species Act, take means to harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect, or attempt to engage in any such conduct, of endangered or threatened species.

5.

The Permittee must keep records of all submissions that are part of the permit application pertaining to the CWIS until the subsequent permit is issued to the Permittee.

E. PRIORITY POLLUTANTS I.

Notice of any proposed use of compounds containing priority pollutants shall be made to the Director no later than 120 days prior to proposed use. Discharge of any product registered under the Federal Insecticide, Fungicide and Rodenticide Act is prohibited unless specifically authorized elsewhere in the Permit.

2.

The below table lists the Priority Pollutants from 40 CFR 423.

NPDES PERMIT NUMBER AL0024619 PART IV: ADDITIONAL REQUIREMENTS, CONDITIONS, AND LIMITATIONS Page 46 of 46 Priority Pollutants from 40 CPR 423 001 Acenaphthene 062 N-nitrosodiphenylamine 114 Antimony 002 Acrolein 063 N-nitrosodi-n-propylamin 115 Arsenic 003 Acrylonitrile 064 Pentachlorophenol 116 Asbestos 004 Benzene 065 Phenol 117 Beryllium 005 Benzidine 066 Bis(2-ethylhexyl) phthalate 118 Cadmium 006 Carbon tetrachloride 067 Butyl benzyl phthalate 119 Chromium (tetrachloromethane) 068 Di-N-Butyl Phthalate 120 Copper 007 Chlorobenzene 069 Di-n-octyl phthalate 121 Cyanide, Total 008 1,2,4-trichlorobenzene 070 Diethyl Phthalate 122 Lead 009 Hexachlorobenzene 071 Dimethyl phthalate 123 Mercury 010 1,2-dichloroethane 072 1,2-benzanthracene (benzo(a) anthracene 124 Nickel 0 I I I, I, 1-trichloreothane 073 Benzo(a)pyrene (3,4-benzo-pyrene) 125 Selenium 012 Hexachloroethane 074 3,4-Benzofluoranthene (benzo(b) fluoranthene) 126 Silver 013 I, 1-dichloroethane 075 11,12-benzofluoranthene (benzo(b) fluoranthene) 127 Thallium 014 1,1,2-trichloroethane 076 Chrysene 126 Silver 015 1,1,2,2-tetrachloroethane 077 Acenaphthylene 128 Zinc 016 Chloroethane 078 Anthracene 129 2,3,7,8-tetrachloro-dibenzo-p-dioxin (TCDD) 0 l 8 Bis(2-chloroethyl) ether 079 1,12-benzoperylene (benzo(ghi) perylene) 019 2-chloroethyl vinyl ether (mixed) 080 Fluorene 020 2-chloronaphthalene 081 Phenanthrene 021 2,4, 6-trichlorophenol 082 1,2,5,6-dibenzanthracene (dibenzo(,h) anthracene) 022 Parachlorometa cresol 083 Indeno (, 1,2,3-cd) pyrene (2,3-o-pheynylene pyrene) 023 Chloroform (trichloromethane) 084 Pyrene 024 2-chlorophenol 085 Tetrachloroethylene 025 1,2-dichlorobenzene 086 Toluene 026 1,3-dichlorobenzene 087 Trichloroethylene 027 1,4-dichlorobenzene 088 Vinyl chloride ( chloroethylene) 028 3,3-dichlorobenzidine 089 Aldrin 029 1,1-dichloroethylene 090 Dieldrin 030 1,2-trans-dichloroethylene 091 Chlordane (technical mixture and metabolites) 031 2,4-dichlorophcnol 092 4,4-DDT 032 1,2-dichloropropane 093 4,4-DDE (p,p-DDX) 033 1,2-dichloropropylene (1,3-094 4,4-DDD (p,p-TDE) dichloropropene) 095 Alpha-cndosulfan 034 2,4-dimethylphenol 096 Beta-cndosulfan 035 2,4-dinitrotoluene 097 Endosulfan sulfate 036 2,6-dinitrotoluene 098 Endrin 037 1,2-diphenylhydrazine 099 Endrin aldehyde 038 Ethylbenzene 100 Heptachlor 039 Fluoranthene IO I Heptachlor epoxide (BHC-hexachlorocyclohexane) 040 4-chlorophenyl phenyl ether I 02 Alpha-BHC 041 4-bromophenyl phenyl ether 103 Beta-BHC 042 Bis(2-chloroisopropyl) ether 104 Gamma-BHC (lindane) 043 Bis(2-chloroethoxy) methane 105 Delta-BHC (PCB-polychlorinated biphenyls) 044 Methylene chloride (dichloromethane) 106 PCB-1242 (Arochlor 1242) 045 Methyl chloride (dichloromethane) 107 PCB-1254 (Arochlor 1254) 046 Methyl bromide (bromomethane) 108 PCB-1221 (Arochlor 1221) 047 Bromoform (tribromomethane) 109 PCB-1232 (Arochlor 1232) 048 Dichlorobromomethane 110 PCB-1248 (Arochlor 1248) 051 Chlorodibromomethane 111 PCB-1260 (Arochlor 1260) 052 Hexachlorobutadiene 112 PCB-1016 (Arochlor 1016) 053 Hexachloromyclopentadiene 113 Toxaphene 054 fsophorone 055 Naphthalene 056 Nitrobenzene 057 2-nitrophenol 058 4-nitrophenol 059 2,4-dinitrophenol 060 4,6-dinitro-o-cresol 061 N-nitrosodimethylamine

Permittee Name:

Facility Name:

Permit Number:

ADEM PERMIT RATIONALE Southern Nuclear Operating Company Joseph M. Farley Nuclear Plant AL0024619 PREPARED DATE: August 23, 2023 REVISED DATE: December 13, 2023 PREPARED BY: Victoria Kim PERMIT IS REISSUANCE DUE TO EXPIRATION DISCHARGE SERIAL NUMBERS (DSN) & DESCRIPTIONS:

DSN Description 001 Main combined facility discharge.

0IA Cooling tower blowdown, Unit I.

0lB Cooling tower blowdown, Unit 2.

0IC Treated chromate bearing wastewater.

0lD Turbine building sump, Unit l.

0lE Turbine building sump, Unit 2.

0IF Steam generator blowdown, Unit l.

0lG Steam generator blowdown, Unit 2.

0IH Liquid radwaste system, Unit l.

011 Liquid radwaste system, Unit 2..

022 River water building sump South.

023 River water building sump North.

024,025,027,029 Storm water runoff from industrial activities from yard drainage areas.

030 Intake screen backwash water, Units I and 2, to intake canal.

034 Misc low flow, non-contact cooling water sources.

035 Petroleum storage area.

24A Treated chromate bearing wastewater.

24B Waste settling pond.

25A Cooling tower overflow, Unit I.

25B Main sewage treatment plant I.

27A Cooling tower overflow, Unit 2.

030 Intake screen backwash water, Units 1 and 2, to intake canal.

034 Misc low flow, non-contact cooling water sources.

035 Petroleum storage area.

INDUSTRIAL CATEGORY:

40 CFR Part 423 - Steam Electric Power Generating Point Source Category MAJOR:

Yes

STREAM INFORMATION:

Receiving Stream:

Classification:

River Basin:

7Ql0:

lQlO:

Chattahoochee River (DSNO0I, DSN0IA-DSN0II, DSN022, DSN023, DSN024-DSN024B, DSN025-DSN025B, DSN029, DSN030, and DSN035)

Swimming/Fish & Wildlife Chattahoochee 1670 cfs 1252 cfs Annual Average Flow: 9947 cfs 303(d) List:

Impairment:

TMDL:

Receiving Stream:

Classification:

River Basin:

7QI0:

lQIO:

NO NIA NO Wilson Creek (DSN027, DSN027A, and DSN034)

Fish & Wildlife Chattahoochee 0.79 cfs 0.5925 cfs Annual Average Flow: 10.218 cfs 303( d) List:

Impairment:

TMDL:

DISCUSSION:

NO NIA NO The facility is a two unit steam electric generating facility with a combined rating of 1,776 megawatts. Steam is generated through the use of nuclear fuel.

ADEM Administrative Rule 335-6-10-.12 requires applicants to new or expanded discharges to Tier II waters demonstrate that the proposed discharge is necessary for important economic or social development in the area in which the waters are located. The application submitted by the facility is not for a new or expanded discharge.

Therefore, the applicant is not required to demonstrate that the discharge is necessary for economic and social development.

DSN 0011: Main combined facility discharge.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type Temperature, Water Deg.

81.7 (Report)

Jan, Feb, Mar, Fahrenheit (00011) deg F Weekly Grab WQBEL Effluent Gross Value Monthly Average Maximum Daily Dec tremperature, Water Deg.

100 111 Apr, May, Jun, WQBEL/

Fahrenheit (0001 !)

deg F Weekly Grah Jul, Aug, Sep, Effluent Gross Value Monthly Average Maximum Daily Oct, Nov BP.T pH (00400) 6.0 9.0 S.U.

Weekly Grab All Months EGL/BPJ Effluent Gross Value Minimum Dailv Maximum Daily Flow, In Conduit or Thru Treatment (Report)

(Report)

Plant (50050)

MOD Daily Pump Log All Months BPJ Effluent Gross Value Monthly Average Maximum Daily Chlorine, Total Residual (50060) 0.2 0.2 See notes (1,2) mg/I Weekly Grab All Months EGL Effluent Gross Value Monthly Average Maximum Daily Chlorine, Free Available (50064) 0.2 0.5 mg/I Weekly Grab All Months EGL Effluent Gross Value Monthlv Average Maximum Dailv DSN 001S: Main combined facility discharge.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type Toxicity, Ceriodaphnia Chronic 0

Semi-(61426) pass=0;fail=l Grab All Months WQBEL Effluent Gross Value Single Sample Annually Toxicity, Pimephales Chronic (61428) 0 pass=0;fail=l Semi-Grab All Months WQBEL Effluent Gross Value Single Sample Annually DSN OOlY: Main combined facility discharge.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type Priority Pollutants Total Effluent I

I I Maximim Daily (50008) mg/I Annually Grab All Months EGL Effluent Gross Value

DSN OlAl & DSN OlBl: Cooling tower blowdown, Unit 1 & Unit 2.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type Chlorine, Total Residual (DSG.

120 All rr'ime) (00208) min/day Daily Pump Log EGL Effluent Gross Value Maximum Daily Months Chromium, Total (As Cr) (01034) 0.20 0.20 mg/I ~XMonthly Grab All EGL Effluent Gross Value Monthly Average Maximum Daily Months IZinc, Total (As Zn) (0 I 092) 1.0 1.6 mg/I Monthly Grab All EGL Effluent Gross Value Monthlv Average Maximum Dailv Months

~low, In Conduit or Thru Treatment (Report)

(Report)

All Plant (50050)

MGD Weekly Pump Log BPJ Effluent Gross Value Monthly Average Maximum Daily Months DSN OlCl & DSN 24Al: Treated chromate bearing wastewater.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type pH (00400) 6.0 9.0 S.U.

Once per Grab All EGL

[Effluent Gross Value Minimum Dailv Maximum Dailv batch Months K:hromium, Total (As Cr) (01034) 0.50 0.50 mg/I Once per Grab All BPJ Effluent Gross Value Monthly Average Maximum Daily batch Months IF low, In Conduit or Thru Treatment (Report)

(Report)

Once per All

~!ant (50050)

MOD Totalizer BPJ

!Effluent Gross Value Monthly Average Maximum Daily batch Months DSN OlCS & DSN 24AS: Treated chromate bearing wastewater.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type Solids, Total Suspended (00530) 30.0 100.0 mg/I Semi-Grab All EGL

!Effluent Gross Value Monthly Average Maximum Daily Annuallv Months K)il & Grease (00556) 15.0 20.0 mg/I Semi-Grab All EGL

[Effluent Gross Value Monthlv Average Maximum Dailv Annually Months DSN 01D1 & DSN OlEl: Turbine building sump, Unit 1 & Unit 2.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type lso!ids, Total Suspended (00530) 30.0 100.0 mg/I Monthly Grab All EGL

!Effluent Gross Value Monthly Average Maximum Dailv Months b il & Grease (00556) 15.0 20.0 mg/I Monthly Grab All EGL

!Effluent Gross Value Monthly Average Maximum Dailv Months

Sample Sample Parameter Quantity or Loading Units Quality or Concentration Units Freq Type Seasonal Basis Flow, In Conduit or Thru Treatment (Report)

I (Report)

I I

All Plant (50050)

MOD Monthly Calculated BPJ Effluent Gross Value Monthly Average Maximum Daily Months DSN OlFS & DSN OlGS: Steam generator blowdown, Unit 1 & Unit 2.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type Solids, Total Suspended (00530) 30.0 100.0 mg/I Semi-Grab All EGL Effluent Gross Value Monthlv Average Maximum Dailv Annually Months Oil & Grease (00556) 15.0 20.0 mg/I Semi-Grab All EGL Effluent Gross Value Monthly Average Maximum Daily Annually Months Boron, Total (As B) (0 I 022)

(Report) mg/I Semi-Grab All BPJ Effluent Gross Value Maximum Daily Annually Months 1'[ow, In Conduit or Thru Treatment (Report)

Semi-All Plant (50050)

MOD Calculated BPJ Effluent Gross Value Maximum Daily Annually Months DSN OlHS & DSN 011S: Liquid radwaste system, Unit 1 & Unit 2.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type Solids, Total Suspended (00530) 30.0 100.0 mg/I Semi-Grab All EGL

!Effluent Gross Value Monthly Average Maximum Dailv Annuallv Months Oil & Grease (00556) 15.0 20.0 mg/I Semi-Grab All EGL

!Effluent Gross Value Monthly Average Maximum Dailv Annuallv Months

~low, In Conduit or Thru Treatment (Report)

Semi-All lo[ant (50050)

MOD Calculated BPJ Effluent Gross Value Maximum Daily Annually Months DSN 024S, DSN025S, DSN027S, and DSN029S: Storm water runoff from industrial activities from yard drainage areas.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type pH (00400)

(Report)

S.U.

Semi-Grab All BPJ

!Effluent Gross Value Minimum Daily Maximum Dailv Annuallv Months Solids, Total Suspended (00530)

(Report)

(Report) mg/I Semi-Grab All BPJ Effluent Gross Value Monthly Average Maximum Dailv Annuallv Months bi! & Grease (00556) 15.0 mg/I Semi-Grab All BPJ

!Effluent Gross Value Maximum Dailv Annuallv Months

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type Plow, In Conduit or Thru Treatment (Report)

(Report)

Semi-lnstantaneo All Plant (50050)

MGD BPJ Effluent Gross Value Monthly Average Maximum Daily Annually us Months Chemical Oxygen Demand (COD)

(Report)

Semi-All 81017) mg/I Grab BPJ Effluent Gross Value Monthly Average Maximum Daily Annually Months DSN 24Bl: Waste settling pond.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type pH (00400) 6.0 9.0 s.u.

Monthly Grab All EGL Effluent Gross Value Minimum Daily Maximum Dailv Months Solids, Total Suspended (00530) 30.0 100.0 mg/I Monthly Grab All EGL Effluent Gross Value Monthly Average Maximum Daily Months Oil & Grease (00556) 15.0 20.0 mg/I Monthly Grab All EGL Effluent Gross Value Monthly Average Maximum Daily Months Flow, In Conduit or Thru Treatment (Report)

(Report)

All Plant (50050)

MGD Monthly Calculated BPJ Effluent Gross Value Monthly Average Maximum Daily Months DSN 25Al & DSN 27 Al: Cooling tower overflow, Unit 1 & Unit 2.

Parameter Quantity or Loading Units Quality or Concentration Units Sample Sample Seasonal Basis Freq Type Chlorine, Total Residual (DSG.

120 All Time) (00208) min/day Daily Pump Log EGL Effluent Gross Value Maximum Daily Months Chromium, Total (As Cr) (01034) 0.20 0.20 mg/I 2XMonthly Grab All EGL Effluent Gross Value Monthlv Average Maximum Daily Months Zinc, Total (As Zn) (01092) 1.0 1.0 mg/I Monthly

-Grab All EGL Effluent Gross Value Monthly Average Maximum Dailv Months Plow, In Co.nduit or Thru Treatment (Report)

(Report)

All D(ant (50050)

MGD Weekly Calculated BPJ Effluent Gross Value Monthly Average Maximum Daily Months

!Chlorine, Total Residual (50060)

(Report)

All See notes (1,2) mg/I Weekly Grab BPJ Effluent Gross Value Monthly Average Maximum Daily Months Chlorine, Free Available (50064) 0.20 0.50 mg/I Weekly Grab All EGL

!Effluent Gross Value Monthly Average Maximum Daily Months

DSN 25Bl: Main sewage treatment plant I Parameter Quantity or Loading Units Qua) ity or Concentration Units Sample Sample Seasonal Basis Freq Type BOD, 5-Day (20 Deg. C) (00310) 30.0 45.0 mg/I Monthly Grab All BPJ Effluent Gross Value Monthly Average Maximum Dailv Months oH (00400) 6.0 9.0 S.U.

Monthly Grab All EGL/BPJ Effluent Gross Value Minimum Daily Maximum Dailv Months Solids, Total Suspended (00530) 30.0 45.0 mg/I Monthly Grab All BPJ Effluent Gross Value Monthlv Average Maximum Dailv Months i:-Jow, In Conduit or Thru Treatment (Report)

(Report)

All

!Plant (50050)

MGD Monthly Calculated BPJ Effluent Gross Value Monthly Average Maximum Daily Months E. Coli (51040) 126 235 col/100 Monthly Grab All WQBEL Effluent Gross Value Monthly Average Maximum Dailv mL Months

Basis for Permit Limitation BPJ - Best Professional Judgment WQBEL - Water Quality Based Effluent Limits EGL - Federal Effluent Guideline Limitations 303(d)- 303(d) List oflmpaired Waters TMDL - Total Maximum Daily Load Requirements

Discussion DSN00l: Main combined facility discharge.

Flow The flow will continue to be in the permit on a monitor only basis and at a daily frequency.

!ill The pH will be in the permit with a daily minimum of6.0 s.u. and a daily maximum of9.0 s.u. This is in accordance with EPA effluent guidelines 40 CFR Part 423.15 New Source Performance Standards (NSPS) for the Steam Electric Power Generating Point Source Category. Water quality standards for Fish and Wildlife streams is 6.0 to 8.5 s.u. pH per ADEM Administrative Rule 335.6-10-.09(5)(e)(2), however, the NSPS standard of 6.0 to 9.0 s.u. should be protective of the receiving stream. The monitoring frequency will continue at once per week.

Temperature (Summer)

The daily maximum temperature for the summer months from April 1 - November 30 will be 111 °F in accordance with the CORMIX model run by ADEM's Water Quality Section. The monthly average will be 100°F as in previous permit. The temperature limits for the summ,er*have been determined by the CORMIX model and is still considered to be valid. The monitoring frequency will be once per week.

Temperature {Winter)

The daily maximum temperature for the winter months from December 1 - March 31 will be monitored. The

. monthly average of81.7°F will be continued. The temperature limits for the winter have been determined by the CORMIX model and is still considered to be valid. The monitoring frequency will be once per week.

Hydrazine After reviewing the facility's NPDES permit and the associated discharge monitoring data submitted to the Department, it.appears that there is minimal to no exposure of Hydrazine. Monitoring for Hydrazine is being removed from the permit.

Total Chromium Total Chromium will be m the permit with a daily maximum and monthly average of 0.5 mg/1. The monitoring frequency will remain at once per quarter. Past data collected from the previous permit shows that the facility consistently shows below detection levels on Total Chromium, therefore, more frequent monitoring is not warranted.

. Chronic Toxicity The In-Stream Waste Concentration (IWC) for the facility is based on the 7Ql 0 of the receiving stream atthe discharge point. The calculation for the IWC is shown below:

7Q10 of Chattahoochee River at the discharge point= 1670 cfs = 1079.349 MGD DSNO0l Average Flow*= 73.277 MGD Qw

73. 277 MGD IWC = '7Q10 + Qw = (1079. 349 MGD + 73. 277 MGD) X 100 = 6* 3574% ~ 6%

- Based on the last five years ofDMR data Priority Pollutants Priority Pollutants as defined by 40 CFR 423( d)(3) are required to be tested once per year unless the permittee chooses to determine compliance through the use of engineering calculations as provided for in the guideline or if the permittee chooses to submit an annual certification eDMR electronically which certifies the non-use of priority pollutants.

Total Residual Chlorine and Free Available Chlorine In accordance with EPA Effluent Guidelines 40 CFR 423.13(d)(2) neither Free Available Chlorine (FAC) nor Total Residual Chlorine (TRC) may be-discharged from any single generating unit for more than two hours in any one day

and not more than one unit in any plant may discharge total residual chlorine at any one time unless the permittee can demonstrate that the units at the permitted location cannot operate at or below this level of chlorination. When blowdown is occurring, grab samples shall be taken every thirty minutes to verify compliance with F AC limitations unless the permittee verifies that F AC levels are less than detectable prior to blowdown, and no chlorination occurs during the blowdown event. Under these circumstances, sampling for F AC may be a single representative grab sample only. In accordance with EPA Effluent Guidelines 40 CFR 423.13(d)(l), the permittee shall not use cooling tower maintenance chemicals which contain any of the 126 priority pollutants. According to 40 CFR423.13(d)(l), the daily maximum limit for FAC is 0.5 mg/I and the monthly average limit for F AC is 0.2 mg/I. In accordance with 40 CFR 423.13(b)(l), the daily maximum and monthly average limits for TRC are 0.2 mg/I each.

Based on historic data submitted by the facility, F AC and TRC will be sampled prior to the final discharge and will be limited according to the guidelines. The monitoring frequency for TRC and F AC will continue at once per week.

Reasonable Potential Analysis The Department completed a reasonable potential analysis (RPA) of the discharge based on laboratory data provided in the Permittee' s application. The RP A indicates whether pollutants in treated effluent have the potential to contribute to excursions of Alabama's in-stream water quality standards. It appears there is no reasonable potential.

DSNOlA& DSNOlB:

Cooling tower blowdown - Unit 1 & Unit 2.

Flow The flow will continue to be in the permit on a monitor only basis and at a frequency of once per week.

Total Residual Chlorine and Free Available Chlorine Due to the dechlorination system and there being no place to collect a sample of chlorine after dechlorination until the final discharge, Total Residual Chlorine and Free Available Chlorine will continue to be tested in the main facility discharge and not internally.

Total Chromium Total Chromium will continue in the permit with a daily maximum and monthly average of0.2 mg/I. These limits are based on 40 CFR 423.13(d)(l) for the Best Available Technology Economically Achievable (BAT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will be twice per month if cooling tower maintenance chemicals containing chromium is initiated by the permittee, if not, the monitoring frequency shall be once per year.

Total Zinc Total Zinc will continue in the permit with a daily maximum and monthly average of 1.0 mg/I. These limits are based on 40 CFR 423.13(d)(l) for the Best Available Technology Economically Achievable (BAT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will be twice per month if cooling tower maintenance chemicals containing chromium is initiated by the permittee, if not, the monitoring frequency shall be once per year.

Time of Total Residual Chlorine Discharge The time of total residual chlorine discharge will be monitored when chlorine is added directly to the cooling towers.

The limit shall be 120 minutes per unit per day. This is in accordance with EPA Effluent Guidelines 423.13(b)(2).

The monitoring frequency will be daily during times when chlorine is added directly to the cooling towers.

DSNOlC & DSN24A: Treated chromate bearing wastewater.

Flow The flow will continue to be in the permit on a monitor only basis and at a frequency of once per batch discharge.

Iill The pH will be in the permit with a daily minimum of6.0 s.u. and a daily maximum of9.0 s.u. This is in accordance with EPA effluent guidelines 40 CFR Part 423.15 New Source Performance Standards (NSPS) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will continue at once per batch discharge.

Total Chromium Total Chromium will be in the permit with a daily maximum and monthly average of 0.5 mg/I. The monitoring frequency will continue at once per batch.

Oil and Grease Oil and Grease will be in the permit with a daily maximum of20 mg/I and a monthly average of 15 mg/I. These limits are based on EPA effluent guidelines 40 CFR Part 423.12(b)(3) Best Practicable Control Technology Currently Available (BPT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will continue at once per six months.

Total Suspended Solids Total Suspended Solids will be in the permit with a daily maximum of I 00 mg/I and a monthly average of 30 mg/I.

These limits are based on EPA effluent guidelines 40 CFR Part 423.12(b)(3) Best Practicable Control Technology Currently Available (BPT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will continue at once per six months.

DSNOlD & DSNOlE: Turbine building sump - Unit 1 & Unit 2.

Flow The flow will continue to be in the permit on a monitor only basis and at a frequency of once per month.

Oil and Grease

. Oil and Grease will be in the permit with a daily maximum of20 mg/I and a monthly average of 15 mg/I. These limits are based on EPA effluent guidelines 40 CFR Part 423.12(b)(3) Best Practicable Control Technology Currently Available (BPT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will continue at once per month.

Total Suspended Solids Total Suspended Solids will be in the permit with a daily maximum of I 00 mg/I and a monthly average of 30 mg/I.

These limits are based on EPA effluent guidelines 40 CFR Part 423.12(b )(3) Best Practicable Control Technology Currently Available (BPT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will continue at once per month.

DSNOlF & DSNOlG: Steam generator blowdown - Unit 1 & Unit 2.

Flow The flow will continue to be in the permit on a monitor only basis and at a semiannually frequency.

Oil and Grease Oil and Grease will be in the permit with a daily maximum of20 mg/I and a monthly average of 15 mg/I. These limits are based on EPA effluent guidelines 40 CFR Part 423.12(b)(3) Best Practicable Control Technology Currently

Available (BPT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will continue semiannually.

Total Suspended Solids Total Suspended Solids will be in the permit with a daily maximum of I 00 mg/I and a monthly average of 30 mg/I.

These limits are based on EPA effluent guidelines 40 CFR Part 423.12(b )(3) Best Practicable Control Technology Currently Available (BPT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will continue semiannually.

Total Boron Total Boron monitoring will be required only if additives containing this element are used in the steam generator system and are subject to discharge through these outfalls. The monitoring frequency under these circumstances will be semiannually with no limits stipulated.

DSNOlH & DSNOll:

Liquid radwaste system - Unit 1 & Unit 2.

Flow The flow will continue to be in the permit on a monitor only basis and at a semiannually frequency.

Oil and Grease Oil and Grease will be in the permit with a daily maximum of20 mg/I and a monthly average of 15 mg/I. These limits are based on EPA effluent guidelines 40 CFR Part 423.12(b)(3) Best Practicable Control Technology Currently Available (BPT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will continue semiannually.

Total Suspended Solids Total Suspended Solids will be in the permit with a daily maximum of I 00 mg/I and a monthly average of 30 mg/I.

These limits are based on EPA effluent guidelines 40 CFR Part 423.l2(bX3) Best Practicable Control Technology Currently Available (BPT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will continue semiannually.

The permittee shall comply with all the U.S. Nuclear Regulatory Commission Requirements relative to this discharge.

DSNOlJ & DSNOlK: Condenser WaterBox Drain - Unit 1 & Unit 2.

No internal monitoring will be required at these points. The condenser waterbox drains discharge to the turbine building sump which is being monitored to include all drains, cooling waters, and leakage flows in the turbine building.

DSN022 & DSN023:

River water building sump South & North.

Based on a past request by the facility, historic DMR data, and inspections by Department personnel, monitoring for flow and pH will continue to not be required at these outfalls. In lieu of monitoring, the facility shall maintain the following:

The north and south river water sumps shall be observed at least monthly to determine if it they are operating efficiently, and a log shall be kept as a record of monthly observations. The logs shall include the date of observation, inspection person, and steps taken to correct any problems. The log shall be made available during on-site inspections by ADEM and EPA.

DSN24B:

Waste settling pond.

Flow The flow will continue to be in the permit on a monitor only basis and at a frequency of once per month.

I!!!

The pH will be in the permit with a daily minimum of 6.0 s.u. and a daily maximum of9.0 s.u. This is in accordance with EPA effluent guidelines 40 CFR Part 423.15 New Source Performance Standards (NSPS) for the Steam Electric Power Generating Point Source Category. Water quality standards for Fish and Wildlife streams is 6.0 to 8.5 s.u. pH per ADEM Administrative Rule 335.6-10-.09{5){e){2), however, the NSPS standard of 6.0 to 9.0 s.u. should be protective of the receiving stream. The monitoring frequency continue at once per month.

Oil and Grease Oil and Grease will be in the permit with a daily maximum of20 mg/I and a monthly average of 15 mg/I. These limits are based on EPA effluent guidelines 40 CFR Part 423.12(b)(3) Best Practicable Control Technology Currently Available (BPT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will continue at once per month.

Total Suspended Solids Total Suspended Solids will be in the permit with a daily maximum of 100 mg/I and a monthly average of 30 mg/I.

These limits are based on EPA effluent guidelines 40 CFR Part 423.12(b)(3) Best Practicable Control Technology Currently Available (BPT) for the Steam Electric Power Generating Point Source Category. The sample type shall be a 24-hour composite, this has been shown to be protective of the stream in the past and therefore shall be continued.

The monitoring frequency will be continue at once per month.

DSN25A & DSN27A: Cooling tower overflow-Unit 1 & Unit 2.

Flow The flow will. continue to be in the permit on a monitor only basis and at a frequency of once per week.

Total Residual Chlorine and Free Available Chlorine In accordance with EPA Effluent Guidelines 40 CFR 423.13( d)(2) neither Free Available nor Total Residual Chlorine may be discharged from any single generating unit for more than two hours in any one day and not more than one unit in any plant may discharge total residual chlorine at any one time unless the permittee can demonstrate that the units at the permitted location cannot operate at or below this level of chlorination. When blowdown is occurring, grab samples shall be taken every thirty minutes to verify compliance with free available chlorine limitations unless the permittee verifies that free available chlorine levels are less than detectable prior to blowdown, and no chlorination occurs during the blowdown even. In this event, sampling for free available chlorine may be a single representative grab sample only. In accordance with EPA Effluent Guidelines 40 CFR 423.13(d)(l), the permittee shall not use cooling tower maintenance chemicals which contain any of the 126 priority pollutants. According to 40 CFR 423.13(d)(l), the daily maximum limit for free available chlorine is 0.5 mg/I and the monthly average is 0.2 mg/I. The monitoring frequency for total residual chlorine and free available chlorine is once per week.

Total Chromium Total Chromium will continue in the permit with a daily maximum and monthly average of0.2 mg/I. These limits are based on 40 CFR 423.13(d)(l) for the Best Available Technology Economically Achievable (BAT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will be twice per month if cooling tower maintenance chemicals containing chromium is initiated by the permittee, if not, the monitoring frequency shall be once per year.

Total Zinc Total Zinc will continue in the permit with a daily maximum and monthly average of 1.0 mg/I. These limits are based on 40 CFR 423.l3(d)(l) for the Best Available Technology Economically Achievable (BAT) for the Steam Electric Power Generating Point Source Category. The monitoring frequency will be twice per month if cooling

tower maintenance chemicals containing chromium is initiated by the permittee, if not, the monitoring frequency shall be once per year.

Time of Total Residual Chlorine Discharge The time of total residual chlorine discharge will be monitored when chlorine is added directly to the cooling towers.

The limit shall be 120 minutes per unit per day. This is in accordance with EPA Effluent Guidelines 423.13(b)(2).

The monitoring frequency will be daily during times when chlorine is added directly to the cooling towers.

DSN25B:

Main sewage treatment plant.

Flow The flow will continue to be in the permit on a monitor only basis and at a frequency of once per month.

ml The pH will be in the permit with a daily minimum of 6.0 s.u. and a daily maximum of9.0 s.u. This is in accordance with EPA effluent guidelines 40 CFR Part 423.15 New Source Performance Standards (NSPS) for the Steam Electric Power Generating Point Source Category. Water quality standards for Fish and Wildlife streams is 6.0 to 8.5 s.u. pH per ADEM Administrative Rule 335.6-10-.09(5)(e)(2). however, the NSPS standard of 6.0 to 9.0 s.u. should be protective of the receiving stream. The monitoring frequency will continue at once per month.

Biochemical Oxygen Demand Biochemical Oxygen Demand will have a daily maximum of 45 mg/I and a monthly average of 30 mg/I. These limitations are identical to municipal discharges of this type. These limits require secondary treatment prior to discharge or mixing with other waste streams. These limits have been shown to be protective of water quality and therefore, shall be continued. The monitoring frequency is once per month as in previous permit and shall be monitored over time of predominant discharge. If manually composited, maximum time between individual aliquots is two (2) hours.

Total Suspended Solids Total Suspended Solids will have a daily maximum of 45 mg/I and a monthly average of 30 mg/I. These limitations are identical to municipal discharges of this type. These limits require secondary treatment prior to discharge or.

mixing with other waste streams. These limits have been shown to be protective of water quality and therefore, shall be continued. The monitoring frequency is once per month as in previous permit and shall be monitored over time of predominant discharge. If manually composited, maximum time between individual aliquots is two (2) hours.

E. Coli The imposed E. coli limits were determined based on the water-use classification of the receiving stream. Since the Chattahoochee River is classified as Swimming/Fish & Wildlife, the limits are 126 col/lO0mL (monthly average) and 235 col/lO0mL (daily maximum), in accordance with ADEM Water Quality criteria. The monitoring frequency shall remain at once per month.

DSN024, DSN025, DSN027, DSN029: Stormwater runoff from industrial activities from yard drainage areas.

Best Professional Judgment (BPJ)

The parameters of concern for stormwater at this facility are based on the parameters of concern listed in EPA form 2F. These parameters are consistent with similar facilities in the state and have been proven to be reflective of the operations at this facility. All stormwater will be monitored on a semi-annual frequency.

Oil & Grease The daily maximum limit of 15 mg/I for Oil and Grease should prevent the occurrence of a visible sheen in the stream and has been shown to be achievable through the use of proper BMPs.

DSN030: Intake screen backwash water, Units 1 and 2, to intake canal.

This discharge is permitted with no monitoring requirements or limitations, provided the permittee adds no pollutants to the discharge.

DSN034: Misc low flow, non-contact cooling water sources.

Miscellaneous, low volume, non-contact cooling waters means non-contact cooling waters with a maximum flow less than 5000 gpd, and subject to addition of no other pollutants other than heat. This discharge is permitted with no monitoring requirements or limitations provided the permittee adds no pollutants to the discharge.

DSN035: Petroleum storage area.

The discharge shall be limited and monitored by the permittee as specified below:

l.

The facility will have a valid SPCC Plan pursuant as specified below:

2.

Best Management Practices (BMP) are used in draining the diked area. BMP is defined as use of a portable skimmer or similar device or use of absorbent material to remove oil and grease (as indicated by the presence of sheen) immediately prior to draining.

3.

Monitoring records shall be maintained in the form of a log and shall contain the following information, as a minimum:

a.

Date and time of discharge.

b.

Estimated volume of discharge.

c.

Initials of person making visual inspection and authorizing discharge.

d. Observed conditions of stormwater discharged.

Best Management Practices (BMPs) are believed to be the most effective way to control the contamination of storm water from areas of industrial activities. This facility is required to maintain a BMP plan. The requirements of the BMP plan call for minimization of stormwater contact with waste materials, products and by-products, and for prevention of spills or loss of fluids from equipment maintenance activities. The effectiveness of the BMPs will be measured through the monitoring of the pollutants of concern.

Cooling Water Intake Requirements Section 316(b) of the Clean Water Act requires that facilities minimize adverse environmental impacts resulting from the operation of cooling water intake structures (CWIS) by using the "Best Technology Available" (BTA). All of those facilities including those not specifically addressed by rules, must be evaluated for 316(b) compliance. For those facilities not addressed in Phase I, II, or III rules, a BT A determination must be made using "Best Professional Judgment" (BPJ) under the authority of 40 CFR §§ 125 Subpart J and 401.14.

The cooling water intake structure (CWIS) used by the permittee has been evaluated using available information and is subject to Phase II requirements. Farley Nuclear Plant has submitted all information required by 40 CFR 122.21 (r).

The design intake flow is 140.4 MGD, the average flow used is 90 MGD and 100% of the water is used for cooling purposes. The intake velocity at design flow is reported to be less than 0.5 fps. The facility employs a closed cycle cooling system which utilizes cooling towers for I 00% of cooling needs. At design levels, the CWIS withdraws 1.67%

of the receiving stream 7QIO and less than 5% of the stream's annual average flow. The facility has chosen to comply with the impingement requirements through the use of monitoring daily average intake flow, cooling water withdrawals, make-up water and blowdown volume or daily monitoring of the cycles of concentration. Based on the above information, the Department has determined that the cooling water intake structure represents the best technology available (BTA) to comply with entrainment and impingement requirements as needed to minimize adverse environmental impact in accordance with the requirements of Section 316(b) of the Federal Clean Water Act (33 U.S.C. section 1326).

The permittee is required to operate and maintain the CWIS in a manner that minimizes impingement and entrainment levels. Documentation detailing the steps that have and are being taken to minimize the impingement and entrainment levels shall be maintained on-site and made available upon request during inspections.

1.

The cooling water intake structure used by the permittee has been evaluated using available information. At this time, the Department has determined that the cooling water intake structure represents the best technology available (BT A) to minimize adverse environmental impact in accordance with Section 316(b) of the Federal Clean Water Act (33 U.S.C. section 1326).

2.

The permittee is required to operate and maintain the CWlS in a manner that minimizes impingement and entrainment levels. Documentation detailing the steps that have and are being taken to minimize the impingement and entrainment levels shall be maintained on site and made available upon request.

3.

Nothing in this permit authorizes take for the purposes of a facility's compliance with the "Endangered Species Act."

4.

The permittee shall submit the information for the CWlS as required by 40 CFR 122.2l(r) at least 180 days prior to expiration of the permit unless a request has been approved by the Department in writing. The facility must submit the request for reduced cooling water intake structure and waterbody application information to the Department at least two years and six months prior to the expiration of the permit. The permittee's request must identify each element that it determines has not been substantially changed since the previous permit application and the basis for the determination.

5.

The Permittee must keep records of all submissions that are part of the permit application pertaining to the CWlS until the subsequent permit is issued to the Permittee.

6.

The Permittee's permit application must contain readily available information, at the time of permit application development, in identifying all Federally-listed threatened and endangered species and/or designated critical habitat that are or may be present in the action area.

7.

The Permittee must conduct weekly visual inspections or employ remote monitoring devices during the period the cooling water intake structure is in operation. This condition is only applicable if control technologies are being employed to comply with BTA for impingement mortality.

8.

The Permittee is required to submit an Annual Certification to the Department no later than January 28th of each year. The Annual Certification shall detail if any changes have been made to impact the operation of the CWlS structure.

The facility must monitor the actual intake flows at least daily. The monitoring must be representative of normal operating conditions, and must include measuring cooling water withdrawals, make-up water, and blow down volume.

In lieu of daily intake flow monitoring, the Permittee may monitor the cycles of concentration at least daily. The Permittee must submit a summary and results of the flow monitoring on no later than January 28th of the following year.

December 13, 2023 Revision The facility submitted comments on the draft permit on November 21, 2023 (see attached). The response and/or revision to each request are addressed below:

The facility has requested clarification regarding the sample type for Chronic Whole Effluent Toxicity. On page 2 of the permit, the sample type for Chronic Whole Effluent Toxicity parameters was indicated as "grab," while Part IV.C.b.(l) specified the sample type as "three 24-hour composites." Part IV.C.b (I) has been changed to "three grab."

The facility has requested that reports submitted more frequently than monthly and monthly testing be submitted on a quarterly basis. The reporting frequency for reports submitted more frequently than monthly and monthly testing shall be on a quarterly basis.

The facility has requested a change in the sample type for TSS (Outfall 24B & 25B) and BOD (Outfall 25B) from composite to grab. The sample type for TSS (Outfall 24B & 25B) and BOD (Outfall 25B) has been changed to grab sample.

The facility has requested the removal of Outfall 002 from page 1 of the rationale. It was listed due to an electronic entry error. Outfall 002 has been removed from the table.

Kim, Victoria P

Subject:

FW: Plant Farley_Draft NPDES Permit No. AL0024619_SNC Comments From: Rothschadl, Benjamin T. <btrothsc@southernco.com>

Sent: Tuesday, November 21, 2023 9:52 AM To: Kim, Victoria P <victoria.kim@adem.alabama.gov>

Cc: Delano, Jim <JMDELANO@southernco.com>; Ramsey, S Scott <SRamsey@adem.alabama.gov>

Subject:

Plant Farley_Draft NPDES Permit No. AL0024619_SNC Comments Ms. Kim, Thank you for your reviewing the renewal application for NPDES Permit No. AL0024619 and drafting the permit for the next cycle. Southern Nuclear Environmental Affairs has completed its initial review process and wishes to provide the following comments:

1.

Outfall 001-Main Combined Facility Discharge:

SNC respectfully requests clarification regarding the sample type for Chronic Whole Effluent Toxicity. In Part 1.A.DSN 001S the sample type is identified as "grab" while in Part IV.C.b.{1) the sample type is identified as "three 24-hour composites".

2.

Discharge Reporting Requirements:

SNC respectfully requests that Part 1.C.b be revised to reflect the current permit language listed here after: Reports of more frequently than monthly and monthly testing shall be submitted on quarterly basis.

3.

Outfall 24B - Waste Settling Pond & Outfall 25B - Main Sewage Treatment Plant:

SNC respectfully requests that the sample type for TSS (Outfalls 24B & 25B) & BOD (Outfall 25B) be changed from composite to grab. Grab sample for the aforementioned parameters maintains compliance with analytical methods listed in 40 CFR Part 136. 3 Table 18. A grab sample would be representative of the volume and nature of the monitored discharge. In order to efficiently operate the Farley Nuclear Plant, plant personnel ensure that the water chemistry is maintained as consistent as possible. Therefore, the wastewater characteri'stics are not variable (composite sample is not warranted to catch any variability in the waste stream), and a grab sample would be sufficient. The table below illustrates that the average and standard deviation are both well below the permitted average and maximum levels.

24B TSS 30.0 mg/L 100.0 mg/L

< 2.5 mg/L 1

59 (33) 2.28 mg/L 3.37 mg/L (Max: 13.9 mg/L)

25B 59 (41) 25B BOD 30.0 mg/L 45.0 mg/L

< 1.5 mg/L 58 (29)

4.

ADEM Permit Rationale - Discharge Serial Numbers (DSN) & Descriptions:

1.73 mg/L 1.97 mg/L 3.15 mg/L (Max: 12.4 mg/L) 2.84 mg/L (Max: 14.1 mg/L)

Please remove Outfall 002. Service water for Units 1 & 2 is monitored at the Main Combined Discharge (DSN 001).

If you have any questions regarding SNC's comments on the draft NPDES permit please contact me at your earliest convenience. Thanks again.

V/R, Benjamin Rothschadl Environmental Specialist 3535 Colonnade Parkway, BIN N-218-EC Birmingham, AL 35243 Office: (205)-992-6388 Cell: (678)-656-1920 btrothsc@southernco.com Southern Nuclear 2

Facility Name: Farley Nuclear Plant" DSN001 *1,as;,d on application NPDES No.: AL0024619 4 Cadmiuin***

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54 P-chloro-M-Oesol

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75 Bis.(2-0irOroelfioxv)Methaiie..

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88 1, 2-Dichlorobe.nzene 89 i.""3-0ichi~benze~

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91 3, 3-Dichlorobenzidine~

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93 Oi~thYi" Phtha1ate **

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112 He.xachloroethane.

113 Jnde.no(l. 2, 3-CK}Pyrene*_

114lsophorolle 115 NaphtJiale.ne 116 Nitrobe.nze.ne.

117 N-Nitrosodi-N-Propylamlne*

118 N-Nitrosodi-N-Methylamine*

119 N-Nitrosodl-N-Phenylamine*

120 PCB-1016 121 PCB-1221 122 PCB-1232 123 PCB-1242 124 PCB-1243 125 PCB-1254 126 PCB-1260 127Phenanthrene 128Pvre.ne.

129 i, 2,4-Trich!orobe.02ene.

Metals t,1e~ls Metals Metals Metal!.

yoc_

voe voe

. voe YES voe YES voe YES VOC YES voe v~_

voe voe YES voe YES voe YES voe YES voe

YES voe voe YES voe voe YES voe voe voe YES voe voe voe voe YES voe YES voe YES voe voe YES voe YES voe voe

, YES voe YES voe YES voe YES YES YES *

.YES YES YES YES yi,;

Acids Acids Ac_ids.

Adds.-

Adds Acids Adds

Add, Add, Adds

.Adcis-

~c1s.

"=

Bases.

"=

.~

~

"=

YES.

Bases

"=

YES

"=

Bases

"=

YEi

"=

Ba=

"'°'

"=

~

"=

YES YES YES

"=

YES Bases YES

.Bases

YES Bases

~

Bases

,~~

YES Bases

"=

YES YES Bases YES Ba=

YES B~e.s YES YES Ba=

YES

"=

YES

"=

YES

"'°'

YES B=s

"=

B,m 0

0 0

"o 0

0.

o*,

0 0

0 *.

.o 0

0 o_

'73.277 Enter Ca=- wast11water discharg11 How from facility (MGO) 113376299 Oa = wastewater discharge flow (ds) (this value is caluclatlld fromtheMGD)

Enter flow from upstrealm discharge Qd2 =- background streamflowinMGOabov11pointofdischarge Qd2 =- background stroam flow from upstream source {cfs}

!' 670_0000' E_nter 7Q1 D, O,., background stream flow in cfs ab<:ive point of discharge 1252 0000 Ent"'r or "'stimate.d, 1Q10, O,"' b~ckground stream flew in cfs above point of discharge {1010 estimated at 75% of7010) g-947 0000

Entu M~an An~ual Flow, O. e:i background stream flow in cfs abovapo1ntofdischarge

~

Enter7Q2, 0."'background slreamflowincfsabove poinlof discharge (For LWF class streams)

Inµ~

a~ +Qd2+Q,. a,,. resultant in-stream now, after discharge Calculated C,=-resultantln-slreampollutantconcentrationinµg/linthe onother stroam(aflercompletombcingoccuis)

" 7.00s.u.

Enter, BackgroundpHabove polntofdischarge Enter, ls dischar911 to a stream? "YES" Other option would be lo a lake. (Thischangesthepartitioncoefficientsforthe mobls)

- UsinaPartitionCodficienl!ii February22.2D24

s Ch1omkxni Ch;om~ 'iff' 6 ChrOITiiumiCtirom~VI-*- *'

7 Copper **

8 Lead°....

. 9 Mercury..

... J~N~~

t1 Selenium __ __ ___ ___ _ _

12 Silver 13 Thal~u*m 14Zlffl:"***..

. 1s Pvanido _

16 TOQI Pheno:ie Ccmpoui,d.

17 Hard~(~~~

).

18 Actoleiro

,*a~~ **-

20 Aldrin 21 Benz'""ooe"-*

22 Bn1rnof;:_..~..

23 Carbon TetradiJoride

- 24 Chlo1dane*

25 Clo1obenze~e

26 Chlofodibr~.M~h~O...

27 Chkl~thw:

28 -Chb~ethytvinyt e*the~

.. 29 CNOfOFOffll.......... -.....

.30 4,4<.ooo...

31 ~-.4'.

DOE 32 4,4'-DOT

33 Dichbrob"n;~~,;thane-****-*

34 1,' 1-0~~,...

3Si*2~*

36 Trans-1.2-0ichloro-E~

37 1. 1-0ichloroethylene

- - - 33 1~*2:CkhlorO?I'~*

--~.~~~.~i~.~ --

41Ethy1benzene 42Meth,ie~ *----

43 Mdtiy1Ch>>rkle **-****- *-**-* -*-

- - t ~~~=;;:~~**~.*:

46 T etrachlor~Ethylene * *

,1rweni1 ********************

48 Toxaphene

49 T~

n(TBT)..

--**so:;*,*,. 1~Trichloi-~*

1.)1 1,\\ *2-Trlc:hloroeth~~~:~~- *-

S2 Trlehloielhylene

... s.)IJiny1Ch~***.

54 P-Ch!~ ~M-O"esol ss 2-Chio:ropherd

se2*:*:..~***

--$7 2 4-Drnetl,y1phen*DI---

58 4, 6-0initro--0-Q-e:$0!

YES

....... YES

-ves*

...... ~s.*

YeS

~.~.

.*)¢s~*.* __

YES YE~

YES

.*....... Y.~~....

... ~~ ~*--~~iu~i*.~*~---=--- -***

60 4,6-Dntro-2~thylphenol

- -,. - *- YES-

51 OioJ5n (2*i1 S.:rcoo)* * * - *****

............ ~~****

70 Benzidine

... h ~::t:t~f-~-~>~

~*~**=~:~:~ ~~*-~--*-*....... :t::.

- 7JBcnzo(b)fluoraoth~ *

.. 7, *eenzo(GH1jperylmi""****

JS ee::im~~............

... ;~ ~:*1~~==::~~:("*~****

.. ~~:YES..

78 Dia,c2-ehk,r~so-Pro11yl) ~the/

79 BIS (2: Et:h)'ihe9'1J.!:'hthalate....... *.

............... YES * *

"'.!~ ~==E~r ___ ****=

82 2-Chloronaphthaleoe

)ci ~i;;~~-~~~1ih*~*;*********-

B4 Chry&,ene

.. 6$ ci;:N.Bufyl.. Ph.1:f\\a~~*...

..... 86 ciN.octy1 Ph!halatO........

~==~~

.. 69 1;*iDichl::iObenlenfl

. 90 t, 4-"[i;:~obenl~

91 3,"3-DlchkxobenzidinO

~~Ph=~:=:*:_::_**~**:=*

.94 2,4-Cinltrotoh.lefie". ****-*.*

- 95 :ii."i6in'itrotolvene 96 1.2;Diphenytiydraule,

97 Endo~.lf.in.(.ilp~).*....

"'98 EMdo~ulfan (beta)......

~ ~ndo:sU!f~.~~~...

100 Endrin

. 101 End,in*Akl*eyti~

1~2~1hem:

103 Fluorone

..... ves.....

YES

vES

.. :.*.-i:.es.*.::*..

- - 10, H~,i1ochior

... VES...

' 195 Heptachlor Epox111e

~-.. ves 106 HeDChlor0Cef\\Zene

..... ~~-~~***.

1*01 *Headt.;~~;**

YES

¥108 Hnachlcr~(311)h~)-- -

- Yes loo Heachloroqrdohei;an.(bda) - ***-

YES

~:~;~=~~;.~~~~:--*~

- - - - .~****

113 lndeno(1,2,3-CK)PyJene 1141aephoione ***

)ts Naphlhaleiie 116 Nitrobenzene 117 N*Nitr~I-N.*Pr~)_'lamioc 118 N."Nib~~

119 N-Nilrosodi~in! ~

,20 PCB-1016

- ,21 PC~1221*..

1~ PC~fa.32_.

123 PCB-1242 12, PCS-:124e 125 ~B-1254 126 PCB-1260.

127 Phenaolh~eoe 12a Pyrene 129 1,2,4-Trk:h!orotienzene*

..... YES Yes V,S YES

... 'vES..

YES YEs Yifa**

YES

~s **

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o_

0 0

O' O*

0

, 0 0

12.2 0

0 0

...... o **

0 o_

0 Q:.

0 0

, *o 0

.o.

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NL-24-0134, Renewed National Pollutant Discharge Elimination System (NPDES) Permit

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NL-24-0134, Renewed National Pollutant Discharge Elimination System (NPDES) Permit

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