Text

2024 Annual Radioactive Effluent Release Report
	ML25118A215
Person / Time
Site:	Cook
Issue date:	04/28/2025
From:	Scarpello M; Indiana Michigan Power Co
To:	; Office of Nuclear Reactor Regulation, Document Control Desk
References
	AEP-NRC-2025-08
	Download: ML25118A215 (1)
	v • d • e

INDIANA MICHIGAN POW/ER.

An MP Company BOUNDLESS ENERGY-April 28, 2025 Docket Nos.: 50-315 50-316 U. S. Nuclear Regulatory Commission A TIN: Document Control Desk Washington, DC 20555-0001 Donald C. Cook Nuclear Plant Unit 1 and 2 Indiana Michigan Power Cook Nuclear Plant One Cook Place Bridgman, Ml 49106 indianamichiganpower.com AEP-NRC-2025-08 10 CFR 50.36 2024 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT In accordance with Technical Specification 5.6.3, Indiana Michigan Power Company, the licensee for Donald C. Cook Nuclear Plant Units 1 and 2, is providing as the enclosure to this letter, the Annual Radioactive Effluent Release Report.

This report covers the period January 1, 2024, through December 31, 2024.

This letter contains no new or modified regulatory commitments. Should you have any questions, please contact me at (269) 466-2649.

Sincerely,

/41.t~,fL, Michael K. Scarpello Regulatory Affairs Director OAF/sjh

Enclosure:

Donald C. Cook Nuclear Plant Units 1 and 2 - 2024 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT

U. S. Nuclear Regulatory Commission Page 2 c:

EGLE - RMD/RPS J. B. Giessner - NRC Region Ill NRC Resident Inspector N. Quilico - MPSC R. M. Sistevaris - AEP Ft. Wayne S. P. Wall, NRC Washington D.C.

A. J. Williamson - AEP Ft. Wayne AEP-NRC-2025-08

ENCLOSURE to AEP-NRC-2025-08 Donald C. Cook Nuclear Plant Units 1 and 2 2024 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT

INDIANA MICHIGAN POWER~

An AEP Company COOK PLANT Donald C. Cook Nuclear Plant Units 1 and 2 2024 Annual Radioactive Effluent Release Report

TABLE OF CONTENTS Table of Contents Introduction I.

II.

Radioactive Releases and Radiological Impact on Man Liquid Releases Gaseous Releases Solid Waste Disposition Ill.

Meteorological IV.

Offsite Dose Calculation Manual (ODCM) Changes V.

Total Dose VI.

Radiation Monitors Inoperable Greater Than 30 Days VII.

Noteworthy Conditions Identified in 2024 VIII.

Conclusion IX.

Errata LIST OF APPENDICES Title 1

1 2

2 3

3 3

3 4

4 6

6 Appendix Al.I 2024 Effluent and Waste Disposal Annual Report -

Supplemental Information Al.2 Summary of Maximum Individual Doses: First Quarter, Second Quarter, Third Quarter, and Fourth Quarter 2024 Al.3 2023 NEI Groundwater Protection Initiative (GPI) Sample Data A2. l Hours at Each Wind Speed and Direction: First Quarter, 2024 A2.2 Hours at Each Wind Speed and Direction: Second Quarter, 2024 A2.3 Hours at Each Wind Speed and Direction: Third Quarter, 2024 A2.4 Hours at Each Wind Speed and Direction: Fourth Quarter, 2024 A3.0 Offsite Dose Calculation Manual (ODCM) Changes 1

I.

INTRODUCTION This report discusses the radioactive discharges from Unit 1 and Unit 2 of the Donald C. Cook Nuclear Plant (CNP) during 2024.

This is in accordance with the requirements of CNP Technical Specification (TS) 5.6.3.

The table below summarizes the pertinent statistics concerning the Plant's operation during the period from January 1, 2024, to December 31, 2024. The data in this table and the descriptive information on plant operation are based upon the respective unit's Monthly Operating Reports, Performance Indicators, and Control Room Logs for 2024.

Parameter Unit 1 Unit2 Gross Electrical Energy Generation 9,473,497 9,124,750 (Megawatt Hour (MWH))

Unit Service Factor 100.0 86.6 (Percent(%))

Unit Capacity Factor 99.6 85.2 (Maximum Dependable Capacity (MDC)) Net(%)

Unit 1 entered the reporting period in Mode 1 at Nominal Full Power (NFP). Small power adjustments were made to facilitate main turbine valve testing throughout the year.

The unit performed a normal downpower to 50% power on June 5, 2024 to support Main Feed Pump waterbox cleaning. The unit returned to NFP on June 8, 2024. The unit exited the reporting period at NFP.

Unit 2 entered the reporting period in Mode 1 at NFP. Small power adjustments were made to facilitate main turbine valve testing throughout the year. The unit performed a normal downpower to 48% power and had an automatic trip occur on March 22, 2024 due to a Main Turbine Thrust Bearing alarm, entering refueling outage U2C28. The unit attained criticality on May 2, 2024, and attained NFP on May 7, 2024. The unit commenced a normal downpower on May 14, 2024 to support repairs on a secondary steam leak, and performed a manual trip from 20% on May 15, 2024 due to worsening leak conditions. The unit attained criticality on May 16, 2024, and attained NFP on May 18, 2024. The unit performed a rapid downpower to 17% power and a manual trip on June 27, 2024 due to a Charging System valve leak. The unit attained criticality on July 2, 2024, and attained NFP on July 4, 2024. The unit exited the reporting period at NFP.

II.

RADIOACTIVE RELEASES AND RADIOLOGICAL IMPACT ON MAN Since a number of release points are common to both units, the release data from both units are combined to form this two-unit, Annual Radioactive Effluent Release Report (ARERR). Appendix Al.1 through A2.4 of this report present the information in accordance with Section 5.6.3 of Appendix A to the Facility Operating Licenses, as specified in the Technical Specifications, Regulatory Guide 1.21, and 10 CFR Part 50, Appendix I.

1

The "MIDAS System" is a computer code that calculates doses due to radionuclides that were released from the CNP.

All liquid and gaseous releases were well within Offsite Dose Calculation Manual (ODCM) limits and federal limits.

There were no abnormal liquid or gaseous releases in 2024. There were no spills or leaks of radioactive liquids requiring voluntary notifications per the Industry Groundwater Protection Initiative or site procedures.

The Independent Spent Fuel Storage Installation (ISFSI) impacts are included with Unit 1 and Unit 2 statistics. The ISFSI cask system does not create any radioactive materials or have any radioactive waste treatment systems. Therefore, specific operating procedures for the control of radioactive effluents are not required. Technical Specifications for the HI-Storm 100 Cask System, Specification 3.1.1, Multi-Purpose Canister (MPC), provides assurance that there are not radioactive effluents from the ISFSI.

Liquid Releases During 2024 there were 58 liquid batch releases performed. The number of liquid batch releases for the Pt, 2nd, 3rd, and 4th quarters in 2024 were 18, 21, 10, and 9, respectively.

Estimated doses (in mrem) to maximally exposed individuals via the liquid release pathways are given in Appendix Al.2 of this report.

Gaseous Releases During the first quarter of 2024 there were seven batch releases from Gas Decay Tanks (GDn, one containment purge, one system tank vent, and 84 Containment Pressure Reliefs (CPR). During the second quarter there were three batch releases from GDTs and 85 CPR.

During the third quarter there were three batch releases from GDTs and 63 CPR. During the fourth quarter there were five batch releases from GDTs and 54 CPR. The CPR continue to be listed as batch releases as described in Nuclear Regulatory Commission Inspections 50-315/89016 (DRSS); 50-316/89017 (DRSS) for CNP, dated June 13, 1989.

Doses continue to be calculated utilizing continuous criteria as allowed by NUREG-0133.

There was a total of 18 GDT releases, one containment purge, one system tank vent, and 286 CPR gaseous batch releases made during 2024.

In calculating the dose consequences for continuous and batch gaseous releases during 2024, the meteorological data measured at the time of the release were used.

The estimated doses (in mrem) to maximally exposed individuals via the gaseous release pathways are given in Appendix Al.2 of this report. For individuals that are within the site boundary, the occupancy time is sufficiently low to compensate for any increase in the atmospheric diffusion factor above that for the site boundary.

2

Solid Waste Disposition There were 16 shipments of radioactive waste made during 2024.

These included shipments made from the site to various radioactive waste processors for ultimate disposal.

III.

METEOROLOGICAL Appendices A2.1, A2.2, A2.3, and A2.4 of this report contain the cumulative joint frequency distribution tables of wind speed and wind direction, corresponding to the various atmospheric stability classes for the first, second, third, and fourth quarters of 2024.

Hourly meteorological data is available for review and/or inspection upon request.

IV.

OFFSITE DOSE CALCULATION MANUAL (ODCM) CHANGES The ODCM, PMP-6010-OSD-001, was not revised during the report period.

V.

TOTAL DOSE Section 3.2.5 of the ODCM requires that the dose or dose commitment to a real individual from all uranium fuel cycle sources in Berrien County be limited to no more than 25 mrem to the total body or any organ ( except the thyroid, which is limited to no more than 7 5 mrem) over a period of 12 consecutive months to show conformance with the requirements of 40 CFR Part 190. The maximum cumulative dose to an individual from liquid and gaseous effluents during 2024 was well within the ODCM limits. Measurements using thermoluminescent dosimeters (TLD) at 12 onsite stations indicate that the dose due to direct radiation is consistent with preoperational and current control (background) levels.

This is fully evaluated in CNP's 2024 Annual Radiological Environmental Operating Report. Additional TLD dosimetry installed by Radiation Protection department programs monitor dose received by individuals on site as visitors.

The annual dose to the maximum individual will be estimated by first, summing the quarterly total body air dose, the quarterly skin air dose, the quarterly critical organ dose from iodines and particulates (I&P), the quarterly total body dose from liquid effluents, the quarterly critical organ dose from liquid effluents, and the Radiological Environmental Monitoring Program onsite direct radiation TLD data. These quarterly values are summed with the annual Carbon-14 dose and compared to the annual total body limit for conservative reasons. The table that follows here represents the above written description:

3

Dose (mrem) 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr l&P 2.87E-02 7.24E-02 1.40E-01 5.76E-02 Total Bodv Air 1.20E-03 7.S0E-03 7.60E-03 1.70E-03 Skin 2.10E-03 1.S0E-02 2.S0E-02 6.90E-03 Liauid TB 2.08E-02 9.49E-03 7.04E-03 7.62E-03 Liauid Oraan 2.08E-02 9.49E-03 7.04E-03 7.62E-03 Direct Radiation 0

0 0

0 Quarterlv Dose Total 7.36E-02 1.14E-01 1.87E-01 8.14E-02 Sum of Quarter Doses 4.56E-01 C14 (Annual) Dose 2.30E+00 C14 (Annual) Curies 1.99E+01 Grand Total Dose (Total Bodv or anv other Oraan) mrem 2.76E+00 Annual Dose Limit (mrem) 25 Percent of limit 1.10E+01 The following data reflects a comparison with 2009 annual dose data (the last year without calculating C-14 dose), 2024 annual dose data, and 2024 annual dose data with C-14 added.

This indicates that 2024 annual dose was 'typical' for a year regarding radioactive effluents. The table is presented as follows:

Annual Dose (mrem)

% of limit 2009 2.60E-01 1.04 2024 4.56E-01 1.82 2024 with C-14 2.76E+00 11.0 VI.

RADIATION MONITORS INOPERABLE GREATER THAN 30 DAYS There were no release pathways with inoperable monitors for greater than 30 days.

VII.

NOTEWORTHY CONDITIONS IDENTIFIED IN 2024 A fuel defect was identified within our Unit 1 reactor core which impacted the effluent releases in 2024, but with minor changes in public dose. Small increases in iodine isotopes and xenon were observed and are expected to continue until the next Unit 1 refueling outage in Spring 2025. No public dose limits are expected to be challenged, and the bulk of the calculated public dose will remain to be carbon-14 as observed on the chart above. The fuel defect is stable and is expected to remain so until the outage.

4

Carbon-14 Supplemental Information for the 2024 Annual Radioactive Effluent Release Report.

C-14 has a 5730 year half-life and is a naturally occurring radionuclide produced by cosmic ray interactions in the atmosphere. C-14 is a relatively low energy beta emitter. Nuclear weapons testing in the 1950s and 1960s significantly increased the amount of C-14 in the atmosphere.

C-14 is also produced in commercial nuclear reactors, but the amounts produced are much less than those produced naturally, from weapons testing, or coal burning power plants. The inventory of C-14 in Earth's biosphere is about 300 million Curies, of which most is in the oceans.

Since the U.S. Nuclear Regulatory Commission published Regulatory Guide (RO) 1.21, Revision 1, in 1974, the analytical methods for determining C-14 have improved.

Coincidentally, the radioactive effluents from commercial nuclear power plants over the same period have decreased to the point that C-14 is likely to be a principal radionuclide in gaseous effluents. Based on these reasons and a desire to adjust policy to align with international standards, the nuclear industry was required to report, starting in 2010, the quantity and dose impact of C-14 here in the United States. The dose will be reported both with and without C-14 so a comparison to 2009 can be made, keeping in mind the differing standards.

The quantity of C-14 released to the environment can be estimated by use of a C-14 source term scaling factor based on power generation (Ref. RO 1.21, Revision 2). A recent study recommends a source term scaling factor of approximately 9.0 to 9.8 Curies/GWe-yr for a Westinghouse Pressurized Water Reactor (Ref. EPRI 1021106, "Estimation of Carbon-14 in Nuclear Plant Gaseous Effluents", dated December 23, 2010). A scaling factor of 9.4 Curies/GWe-yr was assumed for this report. Using this source term scaling factor and actual electrical generation (in MWH) produced during 2024 results in a site total of 19.90 Curies produced.

C-14 releases from Pressurized Water Reactors (PWR) occur primarily as a mix of organic carbon (methane) and inorganic carbon ( carbon dioxide). As a general rule, C-14 in the primary coolant is essentially all organic with a large fraction as gas. Any time the primary coolant is exposed to an oxidizing environment ( during shutdown or refueling), a slow transformation from an organic to an inorganic species occurs.

Various studies documenting measured C-14 releases from PWRs suggest an average 80% organic fraction with the remainder being carbon dioxide, of which 70% is assumed to be released from gaseous batch releases. This equates to 2. 79 Curies released as carbon dioxide which is available for the food pathway through photosynthesis to vegetation.

Dose is calculated utilizing the methodology prescribed in RO 1.109, Appendix C, with the vegetation dose being the predominant pathway. A 'p' factor of 0.33 is determined utilizing the time of batch gaseous releases performed during 2024 and the time available for photosynthesis in plants. A further reduction to the vegetation and leafy vegetable dose is warranted due to the limited growing season in Michigan, which was conservatively limited to nine months.

5

The final results indicated a calculated organ dose from C-14 to a child at the site boundary of 1.92 mrem to the bone and a whole body dose of 0.382 mrem, for a combined total C-14 dose of 2.30 mrem.

This is less than the dose limit of 15 mrem/unit to any organ prescribed in 10 CFR 50, Appendix I, and the 40 CFR Part 190 limit of 25 mrem for total body and for any organ ( ~75 mrem for thyroid).

The C-14 dose is now the major contributor and will consistently be about 8-10 times higher than the pre-2010 calculations. This dose will only change with online power generation, so it will not alter significantly unless the plant is shutdown for an extended period.

VIII.

CONCLUSION Based on the information presented in this report, it is concluded that CNP Units 1 and 2 performed their intended design function with no demonstrable adverse effect on the health and safety of the general public.

IX.

ERRATA There are no errata for the 2024 report.

6

2024 Effluent and Waste Disposal Annual Report SUPPLEMENTAL INFORMATION Facility:

Donald C. Cook Nuclear Plant Licensee:

Indiana Michigan Power Company 1

REGULATORY LIMITS 1.1 Noble Gases The air dose in unrestricted areas due to noble gases released in gaseous effluents shall be limited to the following:

1.1.1 During any calendar quarter, to s 5 mrad/unit for gamma radiation ands 10 mrad/unit for beta radiation.

1.1.2 During any calendar year, to s 10 mrad/unit for gamma radiation ands 20 mrad/unit for beta radiation.

1.2 Iodines - Particulates The dose to a member of the public from radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases with half-lives greater than eight days in gaseous effluents released to unrestricted areas shall be limited to the following:

1.2.1 During any calendar quarter to s 7.5 mrem/unit to any organ.

1.2.2 During any calendar year to s 15 mrem/unit to any organ.

1.3 Liquid Effluents The dose or dose commitment to an individual from radioactive material in liquid effluents released to unrestricted areas shall be limited:

1.3.1 During any calendar quarter to s 1.5 mrem/unit to the total body and to s 5 mrem/unit to any organ.

1.3.2 During any calendar year to s 3 mrem/unit to the total body and to s 10 mrem/unit to any organ.

Al.1-1

2024 Effluent and Waste Disposal Annual Report 1.4 Total Dose The dose or dose commitment to a real individual from all uranium fuel cycle sources is limited to$ 25 mrem to the total body or any organ (except the thyroid, which is limited to$ 75 mrem) over a period of 12 consecutive months.

2 MAXIMUM PERMISSIBLE CONCENTRATIONS 2.1 Gaseous Effluents The dose rate due to radioactive materials released in gaseous effluents from the site shall be limited to the following:

2.1.1 For noble gases:

$ 500 mrem/yr to the total body and 5 3000 mrem/yr to the skin.

2.1.2 For all radioiodines and for all radioactive materials in particulate form and radionuclides (other than noble gases) with half-lives greater than eight days:

$ 1500 mrem/yr to any organ.

The above limits are provided to ensure that radioactive material discharged in gaseous effluents will not result in the exposure of an individual in an unrestricted area to annual average concentrations exceeding the limits in 10 CFR Part 20, Appendix B, Table 2, Column 1.

2.2 Liquid Effluents The concentration of radioactive material released at any time from the site to unrestricted areas shall be limited to the concentrations specified in 10 CFR Part 20, Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained noble gases.

For dissolved or entrained noble gases, the concentration shall be limited to 2 x 10-4 µCi/ml total activity.

Al.1-2

2024 Effluent and Waste Disposal Annual Report 3

AVERAGE ENERGY The average energy (E) of the radionuclide mixture in releases of fission and activation gases as defined in Regulatory Guide 1.21, Appendix B, Section A.3 is not applicable because the limits used for gaseous releases are based on calculated dose to members of the public.

Release rates are calculated using an isotopic mix from actual samples rather than average energy.

4 MEASUREMENTS and APPROXIMATIONS of TOTAL RADIOACTIVITY 4.1 Fission and Activation Gases Sampled and analyzed on an 8192 channel analyzer and HpGe detector.

Tritium analysis is performed using liquid scintillation counters.

4. 2 Iodines Sampled on iodine adsorbing media, and analyzed on an 8192 channel analyzer and HpGe detector.

4. 3 Particulates Sampled on a glass filter and analyzed on an 8192 channel analyzer and HpGe detector.

Sr-89 and Sr-90 analyses are performed by offsite vendor.

4.4 Liquid Effluents Sampled and analyzed on an 8192 channel analyzer and HpGe detector. Tritium analysis is performed using liquid scintillation counters.

Fe-55, Sr-89 and Sr-90 analyses are performed by an offsite vendor.

Ni-63 is also currently being analyzed by the offsite vendor in response to evaluation of the 10 CFR 61 sample results.

Al.1-3

2024 Effluent and Waste Disposal Annual Report 5

BATCH RELEASES 5.1 Liquid 5.1.1 Number of batch releases:

18 releases in the 1st quarter, 2024 21 releases in the 2nd quarter, 2024 10 releases in the 3rd quarter, 2024 9

releases in the 4th quarter, 2024 5.1. 2 Total time period for batch releases:

23,315 minutes 5.1.3 Maximum time for a batch release:

784 minutes 5.1.4 Average time period for batch release:

402 minutes 5.1.5 Minimum time period for a batch release:

135 minutes 5.1.6 Average stream flow during periods of release of effluent into a flowing stream:

6.77E+5 gpm circulating water Al.1-4

2024 Effluent and Waste Disposal Annual Report

5. 2 Gaseous 5.2.1 Number of batch releases:

93 releases in the 1st quarter, 2024

-88 releases in the 2nd quarter, 2024 66 releases in the 3rd quarter, 2024

-59 releases in the 4th quarter, 2024 5.2.2 Total time period for batch releases:

18,356 minutes 5.2.3 Maximum time for a batch release:

354 minutes 5.2.4 Average time period for batch release:

60.0 minutes 5.2.5 Minimum time period for a batch release:

5 minutes Al.1-5

2024 Effluent and Waste Disposal Annual Report 6

ABNORMAL RELEASES 6.1 Liquid 6.1.1 Number of Releases:

1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 0

0 0

0 6.1. 2 Total activity released (Ci) :

1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 0

0 0

0 6.2 Gaseous 6.2.1 Number of Releases:

1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 0

0 0

0 6.2.2 Total activity released (Ci) :

1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 0

0 0

0 Al.1-6

2024 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT GASEOUS EFFLUENTS-GROUND LEVEL RELEASES CONTINUOUS MODE

/Nuclides Released/ Unit I 1st Quarter/ 2nd Quarter/ 3rd Quarter/ 4th Quarter/

/1. FISSION GASES I

H3 AR41 KR85 XE133 XE135 XE13lm XE133m XE135m I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci

/Total for Period I Ci

/ 2. IODINES

!131

!132

!133 I Ci I Ci I Ci

/Total for Period I Ci

/3. PARTICULATES MN54 CO60 CS137 I Ci I Ci I Ci

/Total for Period I Ci 2.0lE+0l 2.0lE+0l 4.llE-06

4. llE-06 DENOTES SUPPLEMENTAL ISOTOPES

1. 96E+0l 2.71E-01

9. 72E-01 4.67E-02 2.09E+0l 7.90E-06 7.90E-06 Al.1-7 2.16E+0l 2.08E+0l 2.16E+0l 2.08E+0l 5.64E-07 5.64E-07

2024 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT GASEOUS EFFLUENTS-GROUND LEVEL RELEASES BATCH MODE INuclides Released! Unit I 1st Quarter! 2nd Quarter! 3rd Quarter! 4th Quarter!

11. FISSION GASES I H3 AR41 KR85 KR85m XE131M XE133M XE133 XE135m XE135 I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci

!Total for Period I Ci

12. IODINES

!131

!132

!133

!134

!135 I Ci I Ci I Ci I Ci I Ci

!Total for Period I Ci 4.17E-01 2.30E-01 6.00E-02 6.70E-03 1.18E+00 7.32E-03 1.90E+00 7.17E-06 3.37E-06 1.05E-05 DENOTES SUPPLEMENTAL ISOTOPES 4.25E-01 1.35E-01 5.60E-02 4.56E-03 1.70E+00 3.05E-03 2.32E+00 1.82E-06 1.82E-06 Al. 1-8 3.50E-01 1.82E-01 1.99E+00 6.43E-03 1.71E-07 3.05E+00 5.81E-03 5.99E+00 2.54E-01 1.19E-01 1.74E+00 7.83E-03 9.39E-08 1.31E+00 2.16E-03 3.44E+00 4.43E-07 4.43E-07

2024 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT GASEOUS EFFLUENTS-GROUND LEVEL RELEASES BATCH MODE INuclides Released! Unit I 1st Quarter! 2nd Quarter! 3rd Quarterl 4th Quarter!

13. PARTICULATES CR51 CO58 CO60 NB95 I Ci I Ci I Ci I Ci

\Total for Period I Ci DENOTES SUPPLEMENTAL ISOTOPES Al.1-9

2024 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT GASEOUS EFFLUENTS-SUMMATION OF ALL RELEASES Units 1st 2nd 3rd 4th IEst.

I Quarter I Quarter I Quarter I Quarter ITotal I

I I

I IError,%1 IA.IFISSION AND I

!ACTIVATION GASES I

11. ITotal Release I Ci I 1.46E+001 3.18E+001 5.23E+00I 3.19E+00I 12.5

12. )Average release I

I rate for period luCi/secl 1.85E-011 4. 04E-011 6.58E-011 4.0lE-011 I

I I

I 13.IPercent of 1% Gammal 6.S0E-031 4.41E-021 4.47E-021 1.02E-021 I

!applicable limit* I Beta I 2.63E-031 2.14E-021 5.50E-021 1.50E-021 I B. I IODINES

11. I Total I-131 I Ci I 1.13E-051 9.72E-061 5.70E-071 4.43E-071 22.9

12. )Average release I

I rate for period luCi/secl 1.44E-061 1.24E-061 7.17E-081 5.58E-081 I

I I

I

13. I Percent of I %

I I applicable limit* I IC. I PARTICULATES

11. I Particulates with! Ci I

)half lives>8 days!

I 4.l0E-061 3.52E-06I 2.04E-07I 1.59E-07I I

I I

I 0.00E+00I 0.00E+00I 0.00E+00i 0.00E+00I N/A I

I I

/2. /Average release I

I rate for period

/uCi/secl 0.00E+00I 0.00E+00I 0.00E+00I 0.00E+00I I

I I

I

/3. /Percent of I %

I

/applicable limit* I I 4. I Gross alpha I

/radioactivity ID. I TRITIUM

/1. /Total Release I Ci I

I Ci I 0.00E+00I 0.00E+00I 0.00E+00I 0.00E+00I I

I I

i<6.16E-07/<6.87E-07/<9.28E-07/<7.37E-07I I

I I

I 2.05E+0li 2.0lE+0li 2.19E+0li 2.l0E+0ll 19.4

/2. /Average release I

/rate for period luCi/secl 2.60E+00I 2.55E+00I 2.76E+00I 2.65E+00I I

I I

I

/3. )Percent of I %

I I applicable limit* I I 1. 48E-02 I 1. 45E-02 I 1. 57E-02 I 1. SlE-02 I I

I I

Applicable limits are expressed in terms of dose.

See Appendices Al.2-1 through Al.2-4 Al.1-10

2024 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT LIQUID EFFLUENTS CONTINUOUS MODE INuclides Released! Unit I 1st Quarter! 2nd Quarter! 3rd Quarter! 4th Quarter!

H3 I Ci 3.03E-02

1. 27E-02

8. 72E-03 7.22E-02 BATCH MODE INuclides Released! Unit I 1st Quarter! 2nd Quarter! 3rd Quarter! 4th Quarter!

H3 CRSl MNS4 FESS COSS CO60 NI63 ZN6S ZR9S NB9S COS7 TC99m AGll0m SB124 SB12S CS137 1131 1133 I *SN113 I

XE131m I *XE133 I *XE133m I *XE13S I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci I Ci 6.00E+02 6.SSE-06 1.0SE-04 3.29E-04 1.82E-06 l.S9E-0S 3.S3E-04 2.91E-06 1.97E-0S 2.S0E-03 1.26E-0S 3.49E-06 DENOTES SUPPLEMENTAL ISOTOPES 3.09E+02 1.02E-04 1.20E-04 7.l0E-07 9.S0E-06 1.29E-06 2.13E-03 Al.1-11 2.71E+02 1.2SE-0S

2. llE-0S 7.43E-04 2.66E+02 1.88E-06 S.43E-04 1.03E-04 2.76E-04 2.96E-04 8.lSE-07 1.47E-0S 4.0SE-0S 1.S0E-06 8.98E-0S

IA.IFISSION AND I

I ACTIVATION I

I PRODUCTS

11. I Total Release

12. !Average diluted I

I concentration I

!during period I 3. I Percent of 2024 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT LIQUID EFFLUENTS-SUMMATION OF ALL RELEASES BATCH MODE Units I Ci luCi/ml I

I 1st 2nd 3rd 4th IEst.

I Quarter I Quarter I Quarter I Quarter !Total I

I I

I IError,%1 I 8.lBE-041 2.33E-041 3.36E-05i 1.28E-03i 11.2 4.98E-lll 1.39E-lli 1.99E-121 1.32E-101 I

I I

I applicable limit I I 8. 06E-04 I 2. 78E-04 i 4. SSE-05 I 1.14E-03 I I

I I

I B. I TRITIUM

11. I Total Release

12. !Average diluted I

I concentration I

!during period I 3. I Percent of I Ci luCi/ml I

I I 6.00E+021 3.09E+021 2.71E+021 2.66E+021 10.1 3.66E-051 1.BSE-051 1.61E-051 2.74E-051 I

I I

!applicable limit I I 3.66E+001 1.85E+00I 1.61E+00I 2.74E+00i I

I I

IC. I DISSOLVED AND I

!ENTRAINED GASES

11. !Total Release

12. !Average diluted I

I concentration I

!during period

13. I Percent of I Ci luCi/ml I

I I 2.S0E-031 2.13E-03i 7.43E-03i 8.98E-051 11.9 I 1.52E-101 1.27E-101 4.41E-lll 9.24E-121 I

I I

!applicable limit I I 7.61E-05i 6.37E-051 2.21E-05i 4.62E-06i I

I I

ID. I GROSS ALPHA I

!RADIOACTIVITY I

ITOTAL RELEASE IE. I VOLUME OF WASTE I

I RELEASED I F. I VOLUME OF I

!DILUTION WATER I

I USED DURING I

I PERIOD Ci 1<2.05E-03i<l.20E-03i<l.22E-03i<6.10E-03i N/A I

I I

I I Liters! 2.09E+071 1.22E+071 1.24E+071 6.21E+071 I

I I

I Liters I I

I I

1.64E+l01 I

I I

1. 68E+l0 I I

I I

Al.1-12 1.69E+l01 I

I I

9.72E+091 I

I I

2.00 I I

3.48

IA. I FISSION AND I

I ACTIVATION I

I PRODUCTS

11. I Total Release

12. !Average diluted I

I concentration I

!during period I 3. I Percent of 2024 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT LIQUID EFFLUENTS-SUMMATION OF ALL RELEASES CONTINUOUS MODE Units I Ci luCi/ml I

I 1st 2nd 3rd 4th I Est.

I Quarter I Quarter I Quarter I Quarter ITotal I

I I

I IError,%1 I 0.00E+0OI 0.0OE+0OI 0.00E+00I 0.00E+00I N/A 0.00E+00I 0.00E+00I 0.00E+00I 0.00E+00I I

I I

!applicable limit I I 0.00E+00I 0.00E+00I 0.00E+00I 0.00E+00I I

I I

I B. I TRITIUM

11. !Total Release

12. !Average diluted I

I concentration I

lduring period I 3. I Percent of I Ci luCi/ml I

I I 3.03E-021 l.27E-021 8.72E-031 7.22E-021 60.2 4.26E-lll l.99E-lll' l.59E-lll 8.57E-lll I

I I

!applicable limit I I 4.26E-061 l.99E-061 l.59E-061 8.57E-061 I

I I

IC. I DISSOLVED AND I

!ENTRAINED GASES

11. I Total Release

12. !Average diluted I

I concentration I

lduring period I 3. I Percent of I Ci luCi/ml I

I I 0.00E+00I 0.00E+00I 0.00E+00I 0.00E+00I N/A 0.00E+00I 0.00E+00I 0.00E+00I 0.00E+00I I

I I

!applicable limit I I 0.00E+00I 0.00E+00I 0.00E+00I 0.00E+00I I

I I

ID. I GROSS ALPHA I

!RADIOACTIVITY I

!TOTAL RELEASE IE. IVOLUME OF WASTE I

I RELEASED I F. I VOLUME OF I

IDILUTION WATER I

I USED DURING I

I PERIOD Ci 1<2.68E-03i<l.08E-031<1.29E-031<6.06E-03i N/A I

I I

I I Liters! 2.72E+071 l.10E+071 l.32E+071 6.16E+071 I

I I

I Liters I I

I I

7.llE+lli I

I I

6. 38E+ll 1 I

I I

Al.1-13

5. 4 9E+ll I I

I I

8. 42E+ll 1 I

I I

2.00 I I

3.48

2024 Effluent and Waste Disposal Annual Report Solid Waste and Irradiated Fuel Shipments Solid Waste Shipped Offsite for Burial or Disposal

1) Type of Waste Unit Estimated amount Estimated Total Error, %

a) Spent resins, filters, sludge, m3 1.76E+01 1.00E+00 evaporator bottoms, etc.

Curies 1.67E+02 3.75E+00 b) Dry compressible waste, m3 3.36E+02 1.00E+00 contaminated equipment, etc.

Curies 4.41 E+00 6.48E+00 m3 c)

Irradiated components, control Curies rods, etc.

d) Other (oil, soil, etc) m3 Curies

2) Estimate of Principle Radionuclide Composition a)

H-3 8%

Co-58 1%

Sb-125 1 %

Cs-137 1%

Mn-54 1%

Co-60 20%

Cs-134 1%

C-14 1%

Fe-55 14%

Ni-63 52%

b)

H-3 1 %

Co-58 3%

Cs-137 1%

C-14 2%

Cr-51 3%

Co-60 15%

Fe-55 58%

Sb-125 1 %

Mn-54 2%

Ni-63 10%

Zr/Nb-95 4%

3) Solid Waste Disposition No. of Shipments Mode of Transportation Destination 7

Truck UniTech Services Group, Inc 6

Truck Waste Control Specialists, LLC 3

Truck Enerav Solutions, LLC

4) Type of Containers used for Shipment: Containers used are excepted packages, Type A, Sea Land, metal boxes, drums, tankers, and hi h inte rit containers HICs.

11 5) Solidification Agent: There were no solidifications performed during this report period.

Al.1-14

2024 Effluent and Waste Disposal Annual Report Yearly Release Rates GASES Fission and Activation Gases Total Release l.31E+0l Curies Average Release Rate 4.13E-01 µCi/sec

% of Applicable Limits*

y 5.29E-02 %

J3 4.70E-02 %

Iodines Total 1-131 Release 2.20E-05 Curies Average Release Rate 6.97E-07 µCi/sec

% of Applicable Limit*

9.96E-01 %

Particulates Total Release 0.00E+00 Curies Average Release Rate 0.00E+00 µCi/sec

% of Applicable Limit*

0.00E+00 %

LIQUIDS Fission and Activation Products Total Release 2.36E-03 Curies Average Diluted Concentration 3.96E-11 µCi/ml

% of Applicable Limits*

Total Body 7.49E-01 %

Organ 2.25E-01 %

Applicable limits are expressed in terms of the annual 10 CFR 50, Appendix I, dose limits.

Al.1-15

2024 Effluent and Waste Disposal Annual Report Site Boundary and Nearest Residence Listing The following distances were used in the calculation of the maximum individual doses:

Sector Direction Boundary (Meters)

Nearest Residence (Meters)

A N

651 659 B

NNE 617 660 C

NE 789 943 D

ENE 1497 1577 E

E 1274 1716 F

ESE 972 1643 G

SE 629 1640 H

SSE 594 964 J

s 594 997 K

SSW 629 942 Al.1-16

Summary of Maximum Individual Doses First Quarter 2024 EFFLUENT APPLICABLE ESTIMATED AGE LOCATION

%OF LIMIT ORGAN DOSE (mrem)

GROUP DISTDIR(M)

APPLICABLE (mrem)

LIMIT QTR (Toward)

(two units)

(per unit)

Liquid Total Body 2.08E-02 Child Receptor 1 6.90E-01 l.5E+0 Liquid Liver 2.08E-02 Child Receptor 1 2.08E-01 5.0E+0 Noble Gas Air Dose 6.81E-04 Any 651 (N) 6.80E-03 5.0E+0 (Gamma-mrad)

Age Noble Gas Air dose 5.25E-04 Any 651 (N) 2.63E-03 1.0E+l (Beta-mrad)

Age Iodines and Thyroid 2.87E-02 Child 341 (N) 1.92E-01 7.5E+0 Particulates Al.2-1

Summary of Maximum Individual Doses Second Quarter 2024 EFFLUENT APPLICABLE ESTIMATED AGE LOCATION 3/4OF LIMIT ORGAN DOSE (mrem)

GROUP DISTDIR(M)

APPLICABLE (mrem)

(Toward)

LIMIT QTR (two units)

(per unit)

Liquid Total Body 9.49E-03 Child Receptor 1 3.17E-01 1.SE+0 Liquid Liver 9.49E-03 Child Receptor 1 9.50E-02 5.0E+0 Noble Gas Air Dose 4.41E-03 Any 651 (N) 4.41E-02 5.0E+0 (Gamma-mrad)

Age Noble Gas Air dose 4.28E-03 Any 651 (N) 2.14E-02 l.0E+l (Beta-mrad)

Age Iodines and Thyroid 7.24E-02 Child 341 (N) 4.83E-01 7.5E+0 Particulates Al.2-2

Summary of Maximum Individual Doses Third Quarter 2024 EFFLUENT APPLICABLE ESTIMATED AGE LOCATION 3/4OF LIMIT ORGAN DOSE (mrem)

GROUP DISTDIR(M)

APPLICABLE (mrem)

(Toward)

LIMIT QTR (two units)

(per unit)

Liquid Total Body 7.04E-03 Child Receptor 1 2.35E-01 1.5E+0 Liquid GI-LU 7.04E-03 Child Receptor 1 7.05E-02 5.0E+0 Noble Gas Air Dose 4.47E-03 Any 651 (N) 4.47E-02 5.0E+0 (Gamma-mrad)

Age Noble Gas Air dose 1.l0E-02 Any 651 (N) 5.50E-02 1.0E+l (Beta-mrad)

Age Iodines and Thyroid 1.40E-01 Child 341 (N) 9.35E-01 7.5E+0 Particulates Al.2-3

Summary of Maximum Individual Doses Fourth Quarter 2024 EFFLUENT APPLICABLE ESTIMATED AGE LOCATION

%OF LIMIT ORGAN DOSE (mrem)

GROUP DISTDIR(M)

APPLICABLE (mrem)

(Toward)

LIMIT QTR (two units)

(per unit)

Liquid Total Body 7.62E-03 Child Receptor 1 2.54E-0l l.5E+0 Liquid Liver 7.62E-03 Child Receptor 1 7.60E-0l 5.0E+0 Noble Gas Air Dose l.02E-03 Any 651 (N) l.02E-02 5.0E+0 (Gamma-mrad)

Age Noble Gas Air dose 2.99E-03 Any 651 (N) l.S0E-02 l.0E+l (Beta-mrad)

Age Iodines and Total Body 5.76E-02 Teen 341 (N) 3.85E-0l 7.5E+0 Particulates Al.2-4

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2024 2024 NEI GROUNDWATER PROTECTION INITIATIVE SAMPLE DATA A 1.3-1

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2024 Analysis of the Sample Data The Groundwater Protection Initiative (GPI) Sample Data for 2024 indicates no groundwater contamination in excess of the reporting threshold of 2.00E-5 uCi/mL for tritium.

Gamma spectroscopy was performed on all Radiological Environmental Monitoring Program (REMP) wells quarterly. Those results are not actual GPI results so are not included in the ARERR but are part of CNP's 2024 Annual Radiological Environmental Operating Report. There were no positively identified gamma radionuclides from plant effluents detected in any of the GPI well gamma samples, and no wells with levels of tritium above detection limits.

The Lower Limit of Detection (LLD) value used for tritium counting of the samples was 9.45E-7 or 9.83E-7, depending on lab equipment used. This is well below the required maximum LLD value of 2.00E-6 uCi/mL per the ODCM.

Values found above the LLD are not abnormal, unexpected, or inconsistent with past sampling history. The samples observed above LLD historically were expected results from the release of tritiated water into the Absorption Pond, a licensed pathway and part of plant design, or the result of recapture deposition of tritium from licensed radioactive gaseous release points. The 2024 results were within expected parameters considering the reduction in tritium released to the Absorption Pond and typical rainfall recapture of tritium experienced.

Wells located inside the Protected Area of the plant are subject to recapture deposition of tritium and may show occasional sample results above LLD values following rainfalls and snow melt.

The results observed in 2024 continue to reflect normal expectations and behaviors as they relate to recaptured tritium for the weather conditions observed. It was a drier year resulting in less recaptured tritium, as shown by the lack of positive tritium sample results.

The sample data indicates that no radioactive spills or unidentified leaks have occurred in 2024 impacting groundwater.

The sample results indicate proper well placement to ensure the protection of the groundwater and early identification of any abnormal conditions involving groundwater.

This is validated by the demonstrated ability to monitor percolation from the Absorption Pond and recaptured tritium in precipitation, with flow direction and behavior acting as described in the plant licensing documents.

Note: Wells MW-22 through MW-27 are multi-port wells installed in the Fall of 2009, with three sample points placed at different depths. S= Shallow M= Middle D= Deep.)

Note: A"*" symbol following a sample result denotes a gamma count was performed. Any gamma results above LLD will be additionally flagged and documented in the analysis section.

A 1.3-2

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2024 2024 GPI Tritium Sample Data in µCi/ml Sample W-1 W-2 W-3 W-4 W-5 W-6 W-7 W-8 W-9 W-10 Date 1/26/24

<LLD

<LLD L

1/30/24

<LLD 1/31/24

<LLD

<LLD 2/21/24 2/26/24 3/26/24 4/05/24

<LLD

<LLD 4/23/24 4/25/24

<LLD

<LLD 5/30/24 6/13/24 7/12/24

<LLD

<LLD 7/15/24

<LLD

<LLD 7/18/24 8/22/24 l

8/26/24 9/26/24

[

10/11/24

<LLD

<LLD 10/14/24

<LLD

+

10/22/24 10/23/24 11/11/24 12/10/24 I

A 1.3-3

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2024 2024 GPI Tritium Sample Data in µCi/ml Sample W-11 W-12 W-13 W-14 W-15 W-20 W-21 MW-22S MW-22M MW-22D Date 1/26/24

<LLD

<LLD 1/30/24

<LLD

<LLD 1/31/24 2/21/24 2/26/24

<LLD

<LLD 3/26/24 4/05/24

<LLD

<LLD 4/23/24 4/25/24 5/30/24 6/13/24

<LLD

<LLD 7/12/24

<LLD

<LLD 7/15/24 7/18/24

+

8/22/24 8/26/24

<LLD

<LLD 9/26/24 10/11/24

<LLD

<LLD 10/14/24 l

10/22/24 10/23/24

<LLD

<LLD 11/11/24 12/10/24 A 1.3-4

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2024 2024 GPI Tritium Sample Data in µCi/ml Sample MW-24S MW-24M MW-24D MW-25S MW-25M MW-25D MW-26S MW-26M MW-26D Date 1/26/24 1/30/24 1/31/24

__j_

2/21/24

<LLD

<LLD 2/26/24

<LLD

_ __j_

+

3/26/24 4/05/24 4/23/24 4/25/24 5/30/24 6/13/24

<LLD

<LLD i

7/12/24 7/15/24 7/18/24 8/22/24

<LLD

<LLD L 8/26/24

<LLD

<LLD 9/26/24

+

10/11/24 10/14/24

+

10/22/24 10/23/24

<LLD

<LLD 11/11/24 12/10/24 A 1.3-5

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2024 2024 Tritium Sample Data in µCi/ml Sample MW-27S MW-27-M MW-27D MW-28 MW-29 OW-1 OW-2 OW-4 Date 1/26/24 1/30/24 1/31/24

<LLD

<LLD 2/21/24

<LLD

<LLD*

<LLD

<LLD 2/26/24 I

~

l 3/26/24

<LLD

<LLD 4/05/24 l

I 4/23/24

<LLD

<LLD 4/25/24 5/30/24

<LLD

<LLD 6/13/24

<LLD

<LLD*

<LLD

<LLD 7/12/24 7/15/24 7/18/24

<LLD

<LLD 8/22/24

<LLD

~

8/26/24 9/26/24

<LLD

L

__j L

10/11/24 10/14/24 l

10/22/24 10/23/24

<LLD

<LLD*

11/11/24

<LLD

<LLD 12/10/24

<LLD

<LLD A 1.3-6

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2024 2024 GPI Tritium Sample Data Sample SG-1 SG-2 SG-4 SG-5 ISF-8 EW-18 Date Note: Wells MW-22 through MW-27 are multi-port wells 1/26/24 installed in the Fall of 2009, with three sample points 1/30/24

<LLD

<LLD placed at different depths. S= Shallow M= Middle D=

1/31/24 Deep.)

(Note: A "*" symbol following a sample result denotes a 2/21/24 gamma count was performed. Any gamma results 2/26/24

<LLD

<LLD above LLD will be additionally flagged and documented in the analysis section.)

3/26/24 4/05/24 4/23/24 4/25/24

<LLD

<LLD 5/30/24 6/13/24

<LLD 7/12/24

<LLD

<LLD 7/15/24 7/18/24 8/22/24 8/26/24

<LLD

<LLD*

9/26/24 10/11/24

<LLD

<LLD 10/14/24 10/22/24

<LLD*

10/23/24 11/11/24 12/10/24 A 1.3-7

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

01/01/2024 - 03/31/2024 Elevation:

Speed:

SPlOM Direction:

DIRl0M Lapse:

DT60M Stability Class:

A Delta Temperature Extremely Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

> 25 Total N

4 25 4

0 0

0 33 NNE 5

3 0

0 0

0 8

NE 2

2 0

0 0

0 4

ENE 0

7 0

0 0

0 7

E 0

l 0

0 0

0 l

ESE 0

3 1

0 0

0 4

SE 0

0 5

0 0

0 5

SSE 0

7 9

0 0

0 16 s

0 l

5 l

0 0

7 SSW 0

0 1

0 0

0 l

SW 0

5 3

0 0

0 8

WSW 0

10 7

0 0

0 17 w

0 8

l 0

0 0

9 WNW l

8 0

0 0

0 9

NW 6

22 0

0 0

0 28 NNW 3

46 5

0 0

0 54 Total 21 148 41 0

0 2ll Calm Hours not Included above for:

Total Period All Hours 9

Number of Valid Hours for this Table:

Total Period All Hours 2ll Total Hours for the Period:

2184 A2.1-1

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

01/01/2024 -

03/31/2024 Elevation:

Speed:

SPlOM Direction:

DIRlOM Lapse:

DT60M Stability Class:

B Delta Temperature Moderately Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

> 25 Total N

1 0

0 0

1 NNE 2

1 0

0 0

0 3

NE 0

1 0

0 0

0 1

ENE 0

1 0

0 0

0 1

E 0

5 0

0 0

0 5

ESE 0

3 0

0 0

0 3

SE 0

6 1

0 0

0 7

SSE 0

7 4

0 0

0 11 s

0 4

7 0

0 0

11 SSW 1

3 5

0 0

0 9

SW 1

9 3

0 0

0 13 WSW 1

3 1

0 0

0 5

w 0

3 1

0 0

0 4

WNW 2

0 0

0 2

NW 1

4 0

0 0

0 5

NNW 3

11 0

0 0

0 14 Total 12 61 22 0

0 0

95 Calm Hours not Included above for:

Total Period All Hours 9

Number of Valid Hours for this Table:

Total Period All Hours 95 Total Hours for the Period:

2184 A2.1-2

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

01/01/2024 -

03/31/2024 Elevation:

Speed:

SPl0M Direction:

DIRlOM Lapse:

DT60M Stability Class:

C Delta Temperature Slightly Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

1 8

0 0

9 NNE 2

0 0

0 2

NE 0

0 0

ENE 2

1 0

0 0

0 3

E 0

3 0

0 0

0 3

ESE 0

1 0

0 0

0 1

SE 0

7 1

0 0

0 8

SSE 1

6 6

0 0

0 13 s

0 10 7

0 0

0 17 SSW 0

1 14 3

0 0

18 SW 0

6 4

0 0

0 10 WSW 2

3 0

0 0

0 5

w 1

1 1

0 0

0 3

WNW 0

2 0

0 0

0 2

NW 1

6 3

0 0

0 10 NNW 1

15 1

0 0

0 17 Total 11 70 37 3

0 0

121 Calm Hours not Included above for:

Total Period All Hours 9

Number of Valid Hours for this Table:

Total Period All Hours 121 Total Hours for the Period:

2184 A2.1-3

Site:

AEPCook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

01/01/2024 - 03/31/2024 Elevation:

Speed:

SPl0M Direction:

DIRl0M Lapse:

DT60M Stability Class:

D Delta Temperature Neutral Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

> 25 Total N

17 44 0

0 0

0 61 NNE 34 9

0 0

43 NE 21 1

0 0

22 ENE 13 11 0

0 0

0 24 E

17 41 7

0 0

0 65 ESE 27 28 3

0 0

0 58 SE 21 31 11 0

0 0

63 SSE 25 32 15 0

0 0

72 s

14 52 57 3

0 0

126 SSW 17 41 41 3

0 0

102 SW 8

34 50 2

0 0

94 WSW 9

21 32 0

0 0

62 w

10 16 4

0 0

0 30 WNW 13 35 7

0 0

0 55 NW 16 31 11 0

0 0

58 NNW 28 87 6

0 0

0 121 Total 290 514 244 8

0 0

1056 Calm Hours not Included above for:

Total Period All Hours 9

Number of Valid Hours for this Table:

Total Period All Hours 1056 Total Hours for the Period:

2184 A2.1-4

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

01/01/2024 -

03/31/2024 Elevation:

Speed:

SPl0M Direction:

DIRl0M Lapse:

DT60M Stability Class:

E Delta Temperature Slightly Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

11 2

0 0

13 NNE 15 2

0 0

17 NE 13 1

0 0

14 ENE 20 4

0 0

24 E

28 6

0 0

34 ESE 19 0

0 0

19 SE 21 17 3

0 0

0 41 SSE 15 48 8

0 0

0 71 s

10 48 23 2

0 0

83 SSW 6

18 15 0

0 0

39 SW 5

6 6

0 0

0 17 WSW 10 7

0 0

17 w

4 4

0 0

8 WNW 9

10 0

0 0

0 19 NW 11 10 0

0 0

0 21 NNW 25 9

3 0

0 0

37 Total 222 192 58 2

0 0

474 Calm Hours not Included above for:

Total Period All Hours 9

Number of Valid Hours for this Table:

Total Period All Hours 474 Total Hours for the Period:

2184 A2.1-5

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

01/01/2024 -

03/31/2024 Elevation:

Speed:

SPI0M Direction:

DIRI0M Lapse:

DT60M Stability Class:

F Delta Temperature Moderately Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

4 0

0 0

4 NNE 2

0 0

0 2

NE 5

0 0

0 5

ENE 4

0 0

0 4

E II 0

0 0

II ESE 14 0

0 0

14 SE 12 3

0 0

15 SSE 16 7

0 0

23 s

6 2

0 0

8 SSW 7

0 0

0 7

SW 6

0 0

0 6

WSW 3

0 0

0 3

w I

0 0

0 I

WNW 0

0 0

NW 2

0 0

0 2

NNW 6

0 0

0 6

Total 99 12 0

0 0

0 l l l Calm Hours not Included above for:

Total Period All Hours 9

Number of Valid Hours for this Table:

Total Period All Hours 111 Total Hours for the Period:

2184 A2.1-6

Site:

AEP Cook Period of Record =

Elevation:

Speed:

SPl0M Stability Class:

G Wind Direction 1-4 N

1 NNE 1

NE 0

ENE 4

E 8

ESE 6

SE 12 SSE 16 s

16 SSW 7

SW 2

WSW 1

w 0

WNW 2

NW 2

NNW 1

Total 79 Calm Hours not Included above for:

Number of Valid Hours for this Table:

Total Hours for the Period:

Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period 01/01/2024 -

03/31/2024 Direction:

DIRlOM Lapse:

DT60M Delta Temperature Extremely Stable Wind Speed (mph) 4-8 8-13 13-19 19-25 0

0 0

0 1

0 0

Total Period All Hours Total Period All Hours A2.1-7

>25 Total 0

1 0

0 0

4 0

8 0

6 0

12 0

16 0

17 0

7 0

2 0

1 0

0 0

2 0

1 0

80 9

80 2184

Site:

AEP Cook Period of Record =

Elevation:

Speed:

SPl0M Stability Class:

ALL Wind Direction 1-4 N

39 NNE 61 NE 41 ENE 43 E

64 ESE 66 SE 66 SSE 73 s

46 SSW 38 SW 22 WSW 26 w

16 WNW 27 NW 39 NNW 67 Total 734 Calm Hours not Included above for:

Variable Direction Hours for:

Invalid Hours for:

Number of Valid Hours for this Table:

Total Hours for the Period:

Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period 01/01/2024 - 03/31/2024 Direction:

DIRl0M Lapse:

DT60M Delta Temperature Wind Speed (mph) 4-8 8-13 13-19 19-25 79 4

0 0

15 0

0 0

5 0

0 0

24 0

0 0

56 7

0 0

35 4

0 0

64 21 0

0 107 42 0

0 118 99 6

0 63 76 6

0 60 66 2

0 44 40 0

0 32 7

0 0

55 7

0 0

73 14 0

0 168 15 0

0 998 402 14 0

Total Period All Hours Total Period All Hours Total Period All Hours Total Period All Hours A2.1-8

> 25 Total 0

122 0

76 0

46 0

67 0

127 0

105 0

151 0

222 0

269 0

183 0

150 0

110 0

55 0

89 0

126 0

250 0

2148 9

0 27 2148 2184

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

04/01/2024 - 06/30/2024 Elevation:

Speed:

SPlOM Direction:

DIRlOM Lapse:

DT60M Stability Class:

A Delta Temperature Extremely Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

18 70 3

0 0

0 91 NNE 6

2 0

0 0

0 8

NE l

l 0

0 0

0 2

ENE 2

l 0

0 0

0 3

E 0

4 0

0 0

0 4

ESE l

2 4

0 0

0 7

SE l

7 6

0 0

0 14 SSE 0

6 0

0 0

0 6

s l

11 4

l 0

0 17 SSW l

3 l

0 0

0 5

SW 5

26 9

0 0

0 40 WSW 2

31 3

0 0

0 36 w

8 10 0

0 0

0 18 WNW 8

14 0

0 0

0 22 NW 8

25 0

0 0

0 33 NNW 16 49 2

0 0

0 67 Total 78 262 32 0

0 373 Calm Hours not Included above for:

Total Period All Hours 39 Number of Valid Hours for this Table:

Total Period All Hours 373 Total Hours for the Period:

2184 A2.2-1

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

04/01/2024 - 06/30/2024 Elevation:

Speed:

SPl0M Direction:

DIRl0M Lapse:

DT60M Stability Class:

B Delta Temperature Moderately Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

4 4

0 0

8 NNE 0

0 0

NE 1

0 0

0 1

ENE 0

0 0

E 0

5 1

0 0

0 6

ESE 1

3 0

0 0

0 4

SE 0

6 1

0 0

0 7

SSE 2

5 0

0 0

0 7

s 0

8 4

0 0

0 12 SSW 0

8 8

0 0

0 16 SW 2

10 4

0 0

0 16 WSW 4

10 1

0 0

0 15 w

4 1

0 0

5 WNW 3

3 0

0 0

0 6

NW 5

5 0

0 0

0 10 NNW 3

10 0

0 0

0 13 Total 29 78 19 0

0 0

126 Calm Hours not Included above for:

Total Period All Hours 39 Number of Valid Hours for this Table:

Total Period All Hours 126 Total Hours for the Period:

2184 A2.2-2

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

04/01/2024 -

06/30/2024 Elevation:

Speed:

SPI0M Direction:

DIRI0M Lapse:

DT60M Stability Class:

C Delta Temperature Slightly Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

3 4

0 0

7 NNE 3

0 0

0 3

NE 0

I 0

0 0

0 I

ENE I

I 0

0 0

0 2

E I

3 I

0 0

0 5

ESE 2

I 0

0 0

0 3

SE I

6 0

0 0

0 7

SSE 1

7 0

0 0

0 8

s 1

12 4

0 0

0 17 SSW 0

17 6

0 0

0 23 SW 5

13 0

0 0

0 18 WSW 2

1 0

0 0

0 3

w 1

3 0

0 0

0 4

WNW 1

0 0

0 1

NW 4

3 0

0 0

0 7

NNW 7

3 0

0 0

0 10 Total 33 75 11 0

0 0

119 Calm Hours not Included above for:

Total Period All Hours 39 Number of Valid Hours for this Table:

Total Period All Hours 119 Total Hours for the Period:

2184 A2.2-3

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

04/01/2024 - 06/30/2024 Elevation:

Speed:

SPlOM Direction:

DIRlOM Lapse:

DT60M Stability Class:

D Delta Temperature Neutral Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

> 25 Total N

22 49 5

0 0

0 76 NNE 10 3

0 0

13 NE 6

6 0

0 0

0 12 ENE 1

2 0

0 0

0 3

E 5

21 4

0 0

0 30 ESE 7

9 2

0 0

0 18 SE 10 17 7

0 0

0 34 SSE 12 10 1

0 0

0 23 s

14 39 31 2

0 0

86 SSW 6

45 38 2

0 0

91 SW 11 18 15 0

0 0

44 WSW 9

14 4

0 0

0 27 w

6 3

0 0

9 WNW 10 12 0

0 0

0 22 NW 14 10 0

0 0

0 24 NNW 25 26 0

0 0

0 51 Total 168 284 107 4

0 0

563 Calm Hours not Included above for:

Total Period All Hours 39 Number of Valid Hours for this Table:

Total Period All Hours 563 Total Hours for the Period:

2184 A2.2-4

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

04/01/2024 -

06/30/2024 Elevation:

Speed:

SPl0M Direction:

DIRIOM Lapse:

DT60M Stability Class:

E Delta Temperature Slightly Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

33 IO 0

0 0

0 43 NNE 18 2

0 0

20 NE 14 2

0 0

16 ENE 8

2 0

0 0

0 IO E

10 7

0 0

17 ESE 18 9

1 0

0 0

28 SE 39 27 9

0 0

0 75 SSE 26 14 0

0 0

0 40 s

29 64 10 0

0 0

103 SSW 17 18 11 0

0 0

46 SW 11 9

1 0

0 0

21 WSW 8

7 0

0 0

0 15 w

14 5

0 0

19 WNW IO 7

0 0

17 NW 11 IO 0

0 0

0 21 NNW 22 6

0 0

28 Total 288 199 32 0

0 0

519 Calm Hours not Included above for:

Total Period All Hours 39 Number of Valid Hours for this Table:

Total Period All Hours 519 Total Hours for the Period:

2184 A2.2-5

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

04/01/2024 -

06/30/2024 Elevation:

Speed:

SPl0M Direction:

DIRlOM Lapse:

DT60M Stability Class:

F Delta Temperature Moderately Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

1 0

0 0

1 NNE 7

0 0

0 7

NE 3

0 0

0 3

ENE 7

2 0

0 0

0 9

E 9

0 0

0 9

ESE 13 0

0 0

13 SE 19 1

0 0

20 SSE 31 3

0 0

34 s

30 8

0 0

38 SSW 8

1 0

0 0

0 9

SW 3

0 0

0 3

WSW 4

0 0

0 4

w 4

0 0

0 4

WNW 0

0 0

NW 6

0 0

0 6

NNW 8

0 0

0 8

Total 153 15 0

0 0

0 168 Calm Hours not Included above for:

Total Period All Hours 39 Number of Valid Hours for this Table:

Total Period All Hours 168 Total Hours for the Period:

2184 A2.2-6

Site:

AEPCook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

04/01/2024 - 06/30/2024 Elevation:

Speed:

SPIOM Direction:

DIRl0M Lapse:

DT60M Stability Class:

G Delta Temperature Extremely Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

0 0

0 NNE 1

0 0

0 1

NE 2

0 0

0 2

ENE 4

0 0

0 4

E 22 0

0 0

22 ESE 38 0

0 0

38 SE 49 0

0 0

49 SSE 31 0

0 0

31 s

39 1

0 0

40 SSW 24 0

0 0

24 SW IO 1

0 0

11 WSW 4

0 0

0 4

w 0

0 0

WNW 1

0 0

0 1

NW 0

0 0

NNW 0

0 0

Total 225 2

0 0

227 Calm Hours not Included above for:

Total Period All Hours 39 Number of Valid Hours for this Table:

Total Period All Hours 227 Total Hours for the Period:

2184 A2.2-7

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

04/01/2024 - 06/30/2024 Elevation:

Speed:

SPI0M Direction:

DIRIOM Lapse:

DT60M Stability Class:

ALL Delta Temperature Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

81 137 8

0 0

0 226 NNE 45 7

0 0

52 NE 27 10 0

0 0

0 37 ENE 23 8

0 0

31 E

47 40 6

0 0

0 93 ESE 80 24 7

0 0

0 111 SE 119 64 23 0

0 0

206 SSE 103 45 1

0 0

0 149 s

114 143 53 3

0 0

313 SSW 56 92 64 2

0 0

214 SW 47 77 29 0

0 0

153 WSW 33 63 8

0 0

0 104 w

37 22 0

0 0

0 59 WNW 33 36 0

0 0

0 69 NW 48 53 0

0 0

0 101 NNW 81 94 2

0 0

0 177 Total 974 915 201 5

0 0

2095 Calm Hours not Included above for:

Total Period All Hours 39 Variable Direction Hours for:

Total Period All Hours 0

Invalid Hours for:

Total Period All Hours 50 Number of Valid Hours for this Table:

Total Period All Hours 2095 Total Hours for the Period:

2184 A2.2-8

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

07/01/2024 -

09/30/2024 Elevation:

Speed:

SPl0M Direction:

DIRl0M Lapse:

DT60M Stability Class:

A Delta Temperature Extremely Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

> 25 Total N

40 44 0

0 0

0 84 NNE 7

4 0

0 0

0 11 NE 3

1 0

0 0

0 4

ENE 5

4 0

0 0

0 9

E 6

7 0

0 0

0 13 ESE 7

8 0

0 0

0 15 SE 3

14 0

0 0

0 17 SSE 5

8 0

0 0

0 13 s

0 IO 0

0 0

0 IO SSW 1

11 1

0 0

0 13 SW 4

27 0

0 0

0 31 WSW 7

11 0

0 0

0 18 w

16 15 0

0 0

0 31 WNW 13 9

0 0

22 NW 21 4

0 0

25 NNW 38 6

0 0

44 Total 176 183 0

0 0

360 Calm Hours not Included above for:

Total Period All Hours 235 Number of Valid Hours for this Table:

Total Period All Hours 360 Total Hours for the Period:

2208 A2.3-1

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

07/01/2024 - 09/30/2024 Elevation:

Speed:

SPl0M Direction:

DIRlOM Lapse:

DT60M Stability Class:

B Delta Temperature Moderately Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

4 3

0 0

7 NNE 2

0 0

0 2

NE 2

2 0

0 0

0 4

ENE 1

0 0

0 1

E 1

1 0

0 0

0 2

ESE 2

1 0

0 0

0 3

SE 3

1 0

0 0

0 4

SSE 4

3 0

0 0

0 7

s 1

7 0

0 0

0 8

SSW 5

9 0

0 0

0 14 SW 4

12 0

0 0

0 16 WSW 3

2 0

0 0

0 5

w 5

4 0

0 0

0 9

WNW 3

3 0

0 0

0 6

NW 3

0 0

0 3

NNW 9

0 0

0 9

Total 52 48 0

0 0

0 100 Calm Hours not Included above for:

Total Period All Hours 235 Number of Valid Hours for this Table:

Total Period All Hours 100 Total Hours for the Period:

2208 A2.3-2

Site:

AEP Cook Period of Record =

Elevation:

Speed:

SPlOM Stability Class:

C Wind Direction 1-4 N

4 NNE 3

NE 1

ENE 2

E 1

ESE 2

SE 2

SSE 5

s 8

SSW 0

SW 8

WSW 4

w 3

WNW 7

NW 7

NNW 7

Total 64 Calm Hours not Included above for:

Number of Valid Hours for this Table:

Total Hours for the Period:

Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period 07/01/2024 -

09/30/2024 Direction:

DIRIOM Lapse:

DT60M Delta Temperature Slightly Unstable Wind Speed (mph) 4-8 8-13 13-19 19-25 2

0 0

0 1

0 0

0 3

0 0

0 1

0 0

0 I

0 0

0 1

0 0

0 3

0 0

0 8

1 0

0 9

1 0

0 12 0

0 0

1 0

0 0

1 0

0 0

1 0

0 0

44 2

0 0

Total Period All Hours Total Period All Hours A2.3-3

>25 Total 0

6 0

4 0

2 0

3 0

8 0

17 0

10 0

20 0

5 0

4 0

7 0

8 0

7 0

110 235 110 2208

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

07/01/2024 -

09/30/2024 Elevation:

Speed:

SPl0M Direction:

DIRl0M Lapse:

DT60M Stability Class:

D Delta Temperature Neutral Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

31 8

0 0

39 NNE 20 6

0 0

26 NE 6

3 0

0 0

0 9

ENE 5

0 0

0 5

E 4

0 0

0 4

ESE 12 l

0 0

13 SE 37 3

0 0

40 SSE 14 4

0 0

18 s

21 27 0

0 0

0 48 SSW 20 26 0

0 0

0 46 SW 12 16 0

0 0

0 28 WSW 19 3

0 0

22 w

18 3

0 0

21 WNW 13 4

0 0

17 NW 20 1

0 0

21 NNW 22 0

0 0

22 Total 274 105 0

0 0

0 379 Calm Hours not Included above for:

Total Period All Hours 235 Number of Valid Hours for this Table:

Total Period All Hours 379 Total Hours for the Period:

2208 A2.3-4

Site:

AEPCook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

07/01/2024 - 09/30/2024 Elevation:

Speed:

SPlOM Direction:

DIRlOM Lapse:

DT60M Stability Class:

E Delta Temperature Slightly Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

42 10 0

0 0

0 52 NNE 39 9

0 0

48 NE 28 4

0 0

32 ENE 9

1 0

0 0

0 10 E

5 0

0 0

5 ESE 11 0

0 0

11 SE 38 1

0 0

39 SSE 36 7

0 0

43 s

50 17 2

0 0

0 69 SSW 16 14 0

0 0

0 30 SW 18 13 0

0 0

0 31 WSW 8

1 0

0 0

0 9

w 17 5

0 0

22 WNW 14 5

0 0

19 NW 16 6

0 0

22 NNW 20 0

0 0

20 Total 367 93 2

0 0

0 462 Calm Hours not Included above for:

Total Period All Hours 235 Number of Valid Hours for this Table:

Total Period All Hours 462 Total Hours for the Period:

2208 A2.3-5

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

07/01/2024 - 09/30/2024 Elevation:

Speed:

SPlOM Direction:

DIRlOM Lapse:

DT60M Stability Class:

F Delta Temperature Moderately Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

> 25 Total N

3 0

0 0

3 NNE 12 1

0 0

13 NE 2

0 0

0 2

ENE 5

0 0

0 5

E 9

0 0

0 9

ESE 22 0

0 0

22 SE 29 0

0 0

29 SSE 26 0

0 0

26 s

30 4

0 0

34 SSW 4

0 0

0 4

SW 3

0 0

0 3

WSW 1

0 0

0 1

w 2

0 0

0 2

WNW 3

0 0

0 3

NW 5

0 0

0 5

NNW 2

0 0

0 2

Total 158 5

0 0

163 Calm Hours not Included above for:

Total Period All Hours 235 Number of Valid Hours for this Table:

Total Period All Hours 163 Total Hours for the Period:

2208 A2.3-6

Site:

AEPCook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

07/01/2024 -

09/30/2024 Elevation:

Speed:

SPl0M Direction:

DIRl0M Lapse:

DT60M Stability Class:

G Delta Temperature Extremely Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

0 0

0 NNE 3

0 0

0 3

NE 1

0 0

0 1

ENE 6

0 0

0 6

E 41 0

0 0

41 ESE 69 0

0 0

69 SE 69 0

0 0

69 SSE 58 0

0 0

58 s

72 2

0 0

74 SSW 10 0

0 0

10 SW 7

0 0

0 7

WSW 3

0 0

0 3

w 2

0 0

0 2

WNW 2

0 0

0 2

NW 0

0 0

NNW 0

0 0

Total 343 2

0 0

345 Calm Hours not Included above for:

Total Period All Hours 235 Number of Valid Hours for this Table:

Total Period All Hours 345 Total Hours for the Period:

2208 A2.3-7

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

07/01/2024 - 09/30/2024 Elevation:

Speed:

SPl0M Direction:

DIRl0M Lapse:

DT60M Stability Class:

ALL Delta Temperature Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

124 67 0

0 0

0 191 NNE 86 21 0

0 0

0 107 NE 43 13 0

0 0

0 56 ENE 33 5

0 0

38 E

67 9

0 0

76 ESE 125 11 0

0 0

0 136 SE 181 20 0

0 0

0 201 SSE 148 25 0

0 0

0 173 s

182 75 3

0 0

0 260 SSW 56 69 2

0 0

0 127 SW 56 80 0

0 0

0 136 WSW 45 18 0

0 0

0 63 w

63 28 0

0 0

0 91 WNW 55 21 0

0 0

0 76 NW 72 12 0

0 0

0 84 NNW 98 6

0 0

104 Total 1434 480 5

0 0

0 1919 Calm Hours not Included above for:

Total Period All Hours 235 Variable Direction Hours for:

Total Period All Hours 0

Invalid Hours for:

Total Period All Hours 54 Number of Valid Hours for this Table:

Total Period All Hours 1919 Total Hours for the Period:

2208 A2.3-8

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

10/01/2024 -

12/31/2024 Elevation:

Speed:

SPl0M Direction:

DIRl0M Lapse:

DT60M Stability Class:

A Delta Temperature Extremely Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

8 13 0

0 0

0 21 NNE 0

1 0

0 0

0 1

NE 0

0 0

ENE 0

0 0

E 0

1 0

0 0

0 1

ESE 0

7 0

0 0

0 7

SE 1

6 0

0 0

0 7

SSE 1

3 0

0 0

0 4

s 0

3 1

0 0

0 4

SSW 0

2 0

0 0

0 2

SW 1

11 1

0 0

0 13 WSW 2

8 0

0 0

0 10 w

1 3

0 0

4 WNW 2

4 1

0 0

0 7

NW 2

10 0

0 0

0 12 NNW 4

4 1

0 0

0 9

Total 22 76 4

0 0

0 102 Calm Hours not Included above for:

Total Period All Hours 66 Number of Valid Hours for this Table:

Total Period All Hours 102 Total Hours for the Period:

2208 A2.4-1

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

10/01/2024 -

12/31/2024 Elevation:

Speed:

SPlOM Direction:

DIRlOM Lapse:

DT60M Stability Class:

B Delta Temperature Moderately Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

3 2

0 0

5 NNE 1

1 0

0 0

0 2

NE 0

0 0

ENE 1

0 0

0 1

E 0

0 0

ESE 0

1 1

0 0

0 2

SE 0

7 0

0 0

0 7

SSE 1

6 0

0 0

0 7

s 0

0 1

0 0

0 1

SSW 2

5 0

0 0

0 7

SW 1

9 0

0 0

0 10 WSW 1

2 2

0 0

0 5

w 0

2 0

0 0

0 2

WNW 1

1 0

0 0

0 2

NW 1

4 0

0 0

0 5

NNW 1

2 0

0 0

0 3

Total 13 42 4

0 0

0 59 Calm Hours not Included above for:

Total Period All Hours 66 Number of Valid Hours for this Table:

Total Period All Hours 59 Total Hours for the Period:

2208 A2.4-2

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

10/01/2024 -

12/31/2024 Elevation:

Speed:

SPI0M Direction:

DIRlOM Lapse:

DT60M Stability Class:

C Delta Temperature Slightly Unstable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

0 1

3 0

0 0

4 NNE 0

0 0

NE 0

0 0

ENE 0

1 0

0 0

0 1

E 0

4 0

0 0

0 4

ESE 0

3 0

0 0

0 3

SE 0

7 0

0 0

0 7

SSE 1

10 0

0 0

0 11 s

1 5

2 0

0 0

8 SSW 0

12 3

0 0

0 15 SW 0

7 1

0 0

0 8

WSW 1

2 0

0 0

0 3

w 0

0 0

WNW 2

2 0

0 0

0 4

NW 3

2 0

0 0

0 5

NNW 5

1 0

0 0

0 6

Total 13 57 9

0 0

0 79 Calm Hours not Included above for:

Total Period All Hours 66 Number of Valid Hours for this Table:

Total Period All Hours 79 Total Hours for the Period:

2208 A2.4-3

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

10/01/2024 -

12/31/2024 Elevation:

Speed:

SPl0M Direction:

DIRlOM Lapse:

DT60M Stability Class:

D Delta Temperature Neutral Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

> 25 Total N

30 27 4

0 0

0 61 NNE 14 8

0 0

22 NE 15 5

0 0

20 ENE 7

2 0

0 0

0 9

E 19 11 0

0 0

0 30 ESE 13 29 0

0 0

0 42 SE 16 84 3

0 0

0 103 SSE 13 50 7

0 0

0 70 s

13 67 38 4

0 0

122 SSW 5

49 52 3

0 0

109 SW 3

42 19 0

0 0

64 WSW 6

32 23 1

0 0

62 w

6 73 15 0

0 0

94 WNW 9

69 9

0 0

0 87 NW 19 71 14 1

0 0

105 NNW 27 42 8

0 0

0 77 Total 215 661 192 9

0 0

1077 Calm Hours not Included above for:

Total Period All Hours 66 Number of Valid Hours for this Table:

Total Period All Hours 1077 Total Hours for the Period:

2208 A2.4-4

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

10/01/2024 -

12/31/2024 Elevation:

Speed:

SPl0M Direction:

DIRlOM Lapse:

DT60M Stability Class:

E Delta Temperature Slightly Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

25 13 0

0 0

0 38 NNE 24 5

0 0

29 NE 25 6

0 0

31 ENE 3

1 0

0 0

0 4

E 14 4

0 0

18 ESE 32 6

0 0

38 SE 26 43 4

0 0

0 73 SSE 21 20 1

0 0

0 42 s

13 18 36 0

0 0

67 SSW 12 29 11 0

0 0

52 SW 9

26 6

0 0

0 41 WSW 5

3 0

0 0

0 8

w 3

6 0

0 0

0 9

WNW 2

4 0

0 0

0 6

NW 4

6 2

0 0

0 12 NNW 17 27 1

0 0

0 45 Total 235 217 61 0

0 0

513 Calm Hours not Included above for:

Total Period All Hours 66 Number of Valid Hours for this Table:

Total Period All Hours 513 Total Hours for the Period:

2208 A2.4-5

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

10/01/2024 -

12/31/2024 Elevation:

Speed:

SPI0M Direction:

DIRlOM Lapse:

DT60M Stability Class:

F Delta Temperature Moderately Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

1 0

0 0

1 NNE 3

0 0

0 3

NE 4

0 0

0 4

ENE 4

0 0

0 4

E 8

0 0

0 8

ESE 12 0

0 0

12 SE 14 0

0 0

14 SSE 20 1

0 0

21 s

10 5

0 0

15 SSW 6

0 0

0 6

SW 1

0 0

0 1

WSW 0

0 0

w 0

0 0

WNW 0

0 0

NW 1

0 0

0 1

NNW 0

0 0

Total 84 6

0 0

90 Calm Hours not Included above for:

Total Period All Hours 66 Number of Valid Hours for this Table:

Total Period All Hours 90 Total Hours for the Period:

2208 A2.4-6

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

10/01/2024 -

12/31/2024 Elevation:

Speed:

SPlOM Direction:

DIRl0M Lapse:

DT60M Stability Class:

G Delta Temperature Extremely Stable Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

>25 Total N

0 0

0 NNE 0

0 0

NE 2

0 0

0 2

ENE 7

0 0

0 7

E 12 0

0 0

12 ESE 25 0

0 0

25 SE 33 0

0 0

33 SSE 71 0

0 0

71 s

34 l

0 0

35 SSW 4

0 0

0 4

SW 0

0 0

WSW 0

0 0

w 0

0 0

WNW 0

0 0

NW 0

0 0

NNW 0

0 0

Total 188 0

0 0

0 189 Calm Hours not Included above for:

Total Period All Hours 66 Number of Valid Hours for this Table:

Total Period All Hours 189 Total Hours for the Period:

2208 A2.4-7

Site:

AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record =

10/01/2024 -

12/31/2024 Elevation:

Speed:

SPIOM Direction:

DIRIOM Lapse:

DT60M Stability Class:

ALL Delta Temperature Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13-19 19-25

> 25 Total N

67 56 7

0 0

0 130 NNE 42 15 0

0 0

0 57 NE 46 11 0

0 0

0 57 ENE 22 4

0 0

26 E

53 20 0

0 0

0 73 ESE 82 46 I

0 0

0 129 SE 90 147 7

0 0

0 244 SSE 128 90 8

0 0

0 226 s

71 99 78 4

0 0

252 SSW 29 97 66 3

0 0

195 SW 15 95 27 0

0 0

137 WSW 15 47 25 I

0 0

88 w

10 84 15 0

0 0

109 WNW 16 80 10 0

0 0

106 NW 30 93 16 I

0 0

140 NNW 54 76 IO 0

0 0

140 Total 770 1060 270 9

0 0

2109 Calm Hours not Included above for:

Total Period All Hours 66 Variable Direction Hours for:

Total Period All Hours 0

Invalid Hours for:

Total Period All Hours 33 Number of Valid Hours for this Table:

Total Period All Hours 2109 Total Hours for the Period:

2208 A2.4-8

OFF-SITE DOSE CALCULATION MANUAL CHANGES The Off-Site Dose Calculation Manual, PMP-6010-OSD-001, was not revised during this 2024 reporting period.

A3.0-1

NO A

B C

D E

E E

F G

H I

J K

L ACTION ITEM NO.

DESCRIPTION SOURCE DOCUMENT LIST 2024 Annual Radioactive Effluent Release Report THE FOLLOWING DOCUMENTS HAVE BEEN USED AS SOURCES OF INFORMATION FOR PREPARATION OF THE A TT ACHED.

COPIES OF THESE DOCUMENTS ARE AVAILABLE FOR REVIEW AT THE LOCATION SPECIFIED.

PAGE SOURCE DOCUMENT DESCRIPTION CURRENT SOURCE PARA.

TITLE, NUMBER, REVISION, ETC.

DOC. LOCATION (FILE NO., ETC.)

1 Control Room logs eSOMs and INPO web page 2

12-OHP-4021-006-004, Data Sheet 1 L-24-01 L-24-61 NDM l -OHP-4021-028-005, Data Sheet l; 2 -OHP-4021-028-005, Data Sheet l; l-OHP-4021-028-004, Data Sheet l; 2-OHP-4021-028-004, Data Sheet l; and 12-OHP-4021-023-002, Data Sheet 1 G-24-01 G-24-21; l-CPR-24-01 l-CPR-24-161; and 2-CPR-24-01 2-CPR-24-125 Radioactive waste shipments and Processor data 3

Quarterly Dose Calculations with MIDAS and Site Specific Data and Source Docs in NDM, vendor Analysis of REMP TLDs Vendor files, and REMP results 4

Control Room logs eSOMs Al.I-I PMP-6010-OSD-001 OFF-SITE DOSE CALCULATION MANUAL Documentum Al.1-2 PMP-6010-OSD-001 OFF-SITE DOSE CALCULATION MANUAL Documentum Al.1-3 PMP-6010-OSD-001 OFF-SITE DOSE CALCULATION MANUAL Documentum Al.1-4 12-OHP-4021-006-004, Data Sheet 1 L-23-01 L-23-63 NDM Al.1-5 1 -OHP-4021-028-005, Data Sheet l; 2 -OHP-4021-028-005, Data NDM Sheet l; l-OHP-4021-028-004, Data Sheet l; 2-OHP-4021-028-004, Data Sheet l; and 12-OHP-4021-023-002, Data Sheet 1 G-24-01 G-24-21; l-CPR-24-01 l-CPR-24-161; and 2-CPR-24-01 2-CPR-24-125 Al.1-6 None Al.1-7 12-THP-6020-ADM-010 Data Sheet 1 NDM Al.1-8 1 -OHP-4021-028-005, Data Sheet l; 2 -OHP-4021-028-005, Data NDM Sheet l; l-OHP-4021-028-004, Data Sheet l; 2-OHP-4021-028-004, Data Sheet 1; and 12-OHP-4021-023-002, Data Sheet 1 G-24-01 G-24-21; l-CPR-24-01 l-CPR-24-161; and 2-CPR-24-01 2-CPR-24-125 Al.1-9 Totals from pages Al.1-7 & 8. PMP-6010-OSD-001 OFF-SITE DOSE Documentum CALCULATION MANUAL (for % of quarterly limit)

Al.1-10 12-OHP-4021-006-004, Data Sheet 1 L-24-01 L-24-61 NDM 12 THP 6020 ADM 010 Data Sheet 1 Vendor Analysis of Quarterly Composites Page 1 of 2

NO M

N 0

p Q

R s

T ACTION ITEM NO.

DESCRIPTION SOURCE DOCUMENT LIST 2024 Annual Radioactive Effluent Release Report THE FOLLOWING DOCUMENTS HA VE BEEN USED AS SOURCES OF INFORMATION FOR PREPARATION OF THE ATTACHED.

COPIES OF THESE DOCUMENTS ARE AVAILABLE FOR REVIEW AT THE LOCATION SPECIFIED.

PAGE SOURCE DOCUMENT DESCRIPTION CURRENT SOURCE PARA.

TITLE, NUMBER, REVISION, ETC.

DOC. LOCATION (FILE NO.,ETc.)

Al.1-11&12 Totals from page Al.1-10. Limits from 10 CFR Part 20, Appendix Documentum Band PMP-6010-OSD-001 OFF-SITE DOSE CALCULATION MANUAL Al.1-13 Radioactive Waste shipments NDM Al.1-14 Yearly totals and% of PMP-6010-OSD-001, OFF-SITE DOSE Documentum CALCULATION MANUAL Al.1-15 Site Specific Data for Site Boundary Distances NDM Al.2-1 4 Quarterly Dose Calculations with MIDAS and Site Specific Data Source Docs in NDM PMP-6010-OSD-001, OFF-SITE DOSE CALCULATION MANUAL Al.3-1 6 GPI Sample Data NDM A2.l-l 8 MIDAS System with Site Specific Data, Meteorological Joint Frequency IT Network drive A2.2-l 8 Tables A2.3-l 8 A2.4-l 8 A3.0-1 Off-Site Dose Calculation Manual Revision Documentum Page 2 of 2

AEP-NRC-2025-08, 2024 Annual Radioactive Effluent Release Report

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AEP-NRC-2025-08, 2024 Annual Radioactive Effluent Release Report

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