AEP-NRC-2022-28, 2021 Annual Radioactive Effluent Release Report

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2021 Annual Radioactive Effluent Release Report
ML22119A256
Person / Time
Site: Cook  American Electric Power icon.png
Issue date: 04/29/2022
From: Scarpello M
Indiana Michigan Power Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
AEP-NRC-2022-28
Download: ML22119A256 (70)
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m INOIANA Indiana Michigan Power MICHIGAN Cook Nuclear Plant POtNER One Cook Place Bridgman, Ml 49106 A unit ofAmerican Electric Power lndianaMichiganPower.com April 29, 2022 AEP-NRC-2022-28 10 CFR 50.36a Docket Nos.: 50-315 50-316 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Donald C. Cook Nuclear Plant Units 1 and 2 2021 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, 2021, through December 31, 2021.

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

Michael K. Scarpello Regulatory Affairs Director DLW/kmh

Enclosure:

Donald C. Cook Nuclear Plant Units 1 and 2 - 2021 Annual Radioactive Effluent Release Report c: R. J. Ancona - MPSC EGLE - RMD/RPS J. B. Giessner - NRC Region Ill NRC Resident Inspector R. M. Sistevaris - AEP Ft. Wayne, J. E. Walcutt - AEP Ft. Wayne S. P. Wall - Washington DC A. J. Williamson - AEP Ft. Wayne

ENCLOSURE to AEP-NRC-2022-28 DONALD C. COOK NUCLEAR PLANT UNITS 1 AND 2 2021 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT

1/ SOURCE DOCUMENT LIST ACTION ITEM NO.

DESCRIPTION 2021 Annual Radioactive Effluent Release Report THE FOLLOWING DOCUMENTS HAVE BEEN USED AS SOURCES OF INFORMATION FOR PREPARATION OF THE ATTACHED.

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

NO PAGE SOURCE DOCUMENT DESCRIPTION CURRENT SOURCE PARA. TITLE, NUMBER, REVISION, ETC. DOC. LOCATION (FILE NO., ETC.)

A 1 Control Room logs PowerView and INPO web page B 2 12-OHP-4021-006-004, Data Sheet 1 L-21-01

  • L-21-67 NDM 1-OHP-4021-028-005, Data Sheet 1; 2 -OHP-4021-028-005, Data Sheet 1; 1-OHP-4021-028-004, Data Sheet 1; 2-OHP-4021-028-004, Data Sheet 1; and 12-OHP-4021-023-002, Data Sheet 1 G-21-01
  • G-21-12; 1-CPR-21-01
  • 1-CPR-21-120; and 2-CPR-21-01
  • 2-CPR-21-134 Radioactive waste shipments and Processor data C 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 PowerView D

E Al.1-1 PMP-6010-OSD-001 OFF-SITE DOSE CALCULATION MANUAL Documentum Al.1-2 PMP-6010-OSD-001 OFF-SITE DOSE CALCULATION MANUAL Documentum E

E Al.1-3 PMP-6010-OSD-001 OFF-SITE DOSE CALCULATION MANUAL Documentum F Al.1-4 12-OHP-4021-006-004, Data Sheet 1 L-21-01

  • L-21-67 NDM G Al.1-5 1 -OHP-4021-028-005, Data Sheet l; 2 -OHP-4021-028-005, Data NDM Sheet 1; 1-OHP-4021-028-004, Data Sheet 1; 2-OHP-4021-028-004, Data Sheet 1; and 12-OHP-4021-023-002, Data Sheet 1 G-21-01
  • G-21-12; 1-CPR-21-01
  • 1-CPR-21-120; and 2-CPR-21-01
  • 2-CPR-21-134 H Al.1-6 None I Al.1-7 12-THP-6020-ADM-010 Data Sheet 1 NDM J Al.1-8 1 -OHP-4021-028-005, Data Sheet I; 2 -OHP-4021-028-005, Data NDM Sheet 1; l-OHP-4021-028-004, Data Sheet I; 2-OHP-4021-028-004, Data Sheet l; and 12-OHP-4021-023-002, Data Sheet I G-21-01
  • G-21-12; l-CPR-21-01
  • t !CPR-21-120; and 2-CPR-21-01
  • 2-CPR-21-134 K Al.1-9 Totals from pages Al.1-7 & 8. PMP-6010-OSD-001 OFF-SITE DOSE Documentum CALCULATION MANUAL (for% of quarterly limit)

L Al.1-10 12-OHP-4021-006-004, Data Sheet 1 L-21-01

  • L-21-67 NDM 12 THP 6020 ADM 010 Data Sheet 1 Vendor Analysis of Quarterly Composites Page 1 of 2

SOURCE DOCUMENT LIST ACTION ITEM NO.

DESCRIPTION 2021 Annual Radioactive Effluent Release Report THE FOLLOWING DOCUMENTS HAVE BEEN USED AS SOURCES OF INFORMATION FOR PREPARATION OF THE ATTACHED.

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

NO PAGE SOURCE DOCUMENT DESCRIPTION CURRENT SOURCE PARA. TITLE, NUMBER, REVISION, ETC. DOC.LOCATION (FILE NO.,ETC.)

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

TABLE OF CONTENTS Table of Contents I. Introduction II. Radioactive Releases and Radiological Impact on Man I Liquid Releases 2 Gaseous Releases 2 Solid Waste Disposition 2 III. Meteorological 3 IV. Offsite Dose Calculation Manual (ODCM) Changes 3 V. Total Dose 3 VI. Radiation Monitors Inoperable Greater Than 30 Days 4 VIL Noteworthy Conditions Identified in 2021 5 VIII. Conclusion 6 IX. Errata 6 LIST OF APPENDICES Appendix Title Al.I 2021 Effluent and Waste Disposal Annual Report - Supplemental Information Al.2 Summary of Maximum Individual Doses: First Quarter, Second Quarter, Third Quarter, and Fourth Quarter 2021 Al.3 2021 NEI Groundwater Protection Initiative (GPI) Sample Data A2. l Hours at Each Wind Speed and Direction: First Quarter, 2021 A2.2 Hours at Each Wind Speed and Direction: Second Quarter, 2021 A2.3 Hours at Each Wind Speed and Direction: Third Quarter, 2021 A2.4 Hours at Each Wind Speed and Direction: Fourth Quarter, 2021 A3.0 Offsite Dose Calculation Manual (ODCM) Changes

I. INTRODUCTION This report discusses the radioactive discharges from Unit 1 and Unit 2 of the Donald C. Cook Nuclear Plant (CNP) during 2021. 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, 2021, to December 31, 2021. 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 2021.

Parameter Unit 1 Unit2 Gross Electrical Energy Generation 9,414,062 9,107,344 Me awatt Hour MWH 98.7 86.5 100.6 86.1 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 and was manually tripped on July 28, 2021, to perform repairs on 1-WMO-13 Discharge Valve. The unit attained criticality on July 31, 2021, and returned to NFP on August 2, 2021. 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 and was manually tripped on April 17, 2021, entering refueling outage U2C26. The unit attained criticality on May 19, 2021, and attained NFP on May 24, 2021. The unit performed a manual trip from 100% power on June 22, 2021, to isolate and repair a steam leak on a Moisture Separator Reheater. The unit attained criticality on July 7, 2021, and attained NFP on July 10, 2021. 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.I 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.

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

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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 2021. 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 2021 there were 65 liquid batch releases performed. The number of liquid batch releases for the I5t, 2nd , 3rd, and 4th quarters in 2021 were 18, 25, 13, and 9, respectively.

Estimated doses (in mrem) to maximally exposed individuals via the liquid release pathways are given in Appendix A 1.2 of this report.

Gaseous Releases During the first quarter of 2021 there were three batch release from Gas Decay Tanks (GDT) and 65 Containment Pressure Reliefs (CPR). During the second quarter there was one batch release from GDTs, one containment purge, one system tank vent, and 59 CPR.

During the third quarter there were three batch releases from GDTs and 68 CPR. During the fourth quarter there were four batch releases from GDTs and 62 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-013 3.

There were a total of eleven GDT releases, one containment purge, one system tank vent, and 254 CPR gaseous batch releases made during 2021.

In calculating the dose consequences for continuous and batch gaseous releases during 2021, 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.

Solid Waste Disposition There were 16 shipments of radioactive waste made during 2021. These included shipments made from the site to various radioactive waste processors for ultimate disposal.

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III. METEOROLOGICAL Appendices A2. l, 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 2021. 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 75 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 2021 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 2021 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:

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Dose (mrem) 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr l&P 1.27E-02 3.17E-02 4.03E-02 3.28E-02 Total Bodv Air 2.00E-04 8.40E-04 1.00E-03 1.20E-03 Skin 3.20E-04 1.30E-03 1.60E-03 2.00E-03 Liauid TB 1.71E-02 1.55E-02 1.45E-02 3.02E-03 Liauid Oman 1.71-E-02 1.55E-02 1.45E-02 3.02E-03 Direct Radiation 0 0 0 0 Quarterlv Dose Total 4 .74E-02 6.48E-02 7.19E-02 4.20E-02 Sum of Quarter Doses 2.26E-01 C14 (Annual) Curies 19.87 C14 (Annual) Dose 2.30E+00 Grand Total Dose (Total Bodv or anv other Craan) mrem 2.53E+00 Annual Dose Limit (mrem) 25 Percent of limit 1.01E+01 The following data reflects a comparison with 2009 annual dose data (the last year without calculating C-14 dose), 2021 annual dose data, and 2021 annual dose data with C-14 added.

This indicates that 2021 annual dose was 'typical' for a year in regards to radioactive effluents. The table is presented as follows:

Annual Dose (mrem)  % of limit 2009 2.60E-01 1.04 2021 2.26E-01 0.905 2021 with C-14 2.53E+00 10.1 VI. RADIATION MONITORS INOPERABLE GREATER THAN 30 DAYS The Radiation Monitor System has undergone an extensive replacement project to upgrade and modernize the equipment to support the expected operational lives of the two CNP units. This work completed in April of 2020. One effluent monitor pathway continues to have issues with the background radiation levels due to the detector sensitivities. 12-RRS-1001/1021 channels of the Waste Disposal liquid effluent monitors were declared inoperable on July 24, 2020, and required software changes in order to address the higher background detected due to the increased sensitivity. The actual room area radiation levels are relatively unchanged, but the new detectors are far more sensitive and capable of detecting much lower radiation levels. The software was redeveloped and delivered to CNP in December, 2021 with software testing and validation in progress up to the end of the year. The new software changes appear successful at addressing the issue. All releases on this pathway have been and remain in compliance with ODCM and any required compensatory actions. Additional actions to reduce the background radiation are also being scheduled in order to further alleviate the conditions. These detectors remained inoperable to the end of the year. There were no other release pathways with inoperable monitors for greater than 30 days.

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VII. NOTEWORTHY CONDITIONS IDENTIFIED IN 2021 The Carbon-14 Supplemental Information section has been returned to this report following stakeholder feedback. The clarity on the Carbon-14 dose determinations was appreciated and ensured all stakeholders could properly evaluate where the majority of CNP public dose originates from.

Carbon-14 Supplemental Information for the 2021 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 (RG) 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. RG 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 2021 results in a site total of 19.87 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 5

gaseous batch releases. This equates to 2.78 Curies released as carbon dioxide which is available for the food pathway through photosynthesis to vegetation.

Dose is calculated utilizing the methodology prescribed in RG 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 2021 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.

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 0.381 mrem, for a combined total C-14 dose of2.30 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 documents attached for 2021.

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2021 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~ 5 mrad/unit for gamma radiation and~ 10 mrad/unit for beta radiation.

1.1.2 During any calendar year, to~ 10 mrad/unit for gamma radiation and~ 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~ 7.5 mrem/unit to any organ.

1.2.2 During any calendar year to~ 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~ 1.5 mrem/unit to the total body and to~ 5 mrem/unit to any organ.

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

Al.1-1

2021 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 s 25 mrem to the total body or any organ (except the thyroid, which is limited to s 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: s 500 mrem/yr to the total body and s 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: s 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

2021 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

2021 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, 2021 25 releases in the 2nd quarter, 2021 13 releases in the 3rd quarter, 2021 9 releases in the 4th quarter, 2021 5 .1. 2 Total time period for batch releases:

20,997 minutes 5 .1. 3 Maximum time for a batch release:

804 minutes 5.1.4 Average time period for batch release:

323 minutes 5.1.5 Minimum time period for a batch release:

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

6.11E+5 gpm circulating water Al.1-4

2021 Effluent and Waste Disposal Annual Report

5. 2 Gaseous 5.2.1 Number of batch releases:

127 releases in the 1st quarter, 2021 83 releases in the 2nd quarter, 2021 69 releases in the 3rd quarter, 2021 72 releases in the 4th quarter, 2021 5.2.2 Total time period for batch releases:

22,560 minutes 5.2.3 Maximum time for a batch release:

354 minutes 5.2.4 Average time period for batch release:

64.3 minutes 5.2.5 Minimum time period for a batch release:

5 minutes Al.1-5

2021 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

2021 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT GASEOUS EFFLUENTS-GROUND LEVEL RELEASES CONTINUOUS MODE INuclides Released Unit I 1st Quarter! 2nd Quarter! 3rd Quarter! 4th Quarter!

11. FISSION GASES H3 Ci l.64E+0l I 2.18E+0l l.85E+0l l.61E+0l j AR41 Ci -------- I -------- -------- I 1 KR85 Ci -------- I -------- -------- I XE133 Ci -------- I --------

I XE135 Ci I --------

! XE13lm Ci I --------

XE133m Ci -------- I -------- -------- I --------

XE135m I Ci -------- I -------- -------- I --------

!Total for Period I Ci 1. 64E+0l 2.18E+0l 1. 85E+0l l.61E+0l j2. IODINES I I n31 I Ci l.72E-06 4.SlE-06 I --------

1 !132 I Ci I --------

!133 I Ci I -------- -------- I --------

!Total for Period I Ci 1. 72E-06 4.SlE-06 j --------

I3 . PARTICULATES I MN54 j Ci -------- -------- -------- -------- I C060 I Ci -------- I CS137 I Ci -------- I

!Total for Period I Ci -------- I

  • DENOTES SUPPLEMENTAL ISOTOPES Al.1-7

2021 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 I H3 I Ci l. llE-01 2.S?E-01 I l.72E-01 1.89E-01 AR41 I Ci 2.00E-01 2.09E-01 I 2.27E-01 2.SSE-01 KR85 I Ci 5. 71E-03 2.95E-03 I 4.71E-03 3 .18E-03 j KR8Sm I Ci 1. 96E-05 -------- I KR87 Ci -------- I --------

I KR88 Ci -------- I --------

1 XE133 Ci 1. S0E-03 l.0SE-02 5.0lE-03 9.20E-03 XE135m Ci 2.02E-04 I --------

XE135 Ci 1.37E-03 I 4.14E-04 S.31E-04

!Total for Period Ci 3.19E-01 4.SlE-01 4.09E-01 4.87E-01

12. IODINES I131 I Ci -------- -------- I I132 I Ci -------- -------- I I133 I Ci I134 I Ci I135 I Ci -------- -------- I

!Total for Period I Ci -------- -------- I

  • DENOTES SUPPLEMENTAL ISOTOPES Al.1-8

2021 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT GASEOUS EFFLUENTS-GROUND LEVEL RELEASES BATCH MODE jNuclides Released! Unit I 1st Quarter! 2nd Quarter! 3rd Quarter! 4th Quarter!

j3. PARTICULATES I CRSl I Ci -------- I -------- I COSS I Ci -------- I --------

C060 I Ci -------- I --------

NB95 I Ci -------- I -------- -------- I jTotal for Period I Ci -------- I

  • DENOTES SUPPLEMENTAL ISOTOPES Al.1-9

2021 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT GASEOUS EFFLUENTS-SUMMATION OF ALL RELEASES Units I 1st I 2nd I 3rd I 4th jEst.

I Quarter I Quarter I Quarter I Quarter jTotal I I I I I !Error,%

jA. I FISSION AND I

!ACTIVATION GASES I

11. !Total Release I Ci j 2.07E-0ll 2.24E-0ll 2.38E-0ll 2.98E-0ll 16.0 j2. !Average release juci/seci 2.66E-021 2.BSE-021 2.99E-021 3.75E-021 I irate for period I I I I I I j3. !Percent of j% Gamma I 3.45E-03j 1.SlE-021 1.85E-02j 2.32E-03j

!applicable limit* I Beta I 6.l0E-041 2.73E-03j 3.27E-03j 4.18E-03j jB. jIODINES

11. !Total I-131 I Ci I 0.00E+00I 1.72E-061 4.81E-06I 0.0OE+00I 22.6 j2. !Average release juci/secl 0.00E+00I 2.19E-071 6.0SE-071 0.00E+00I I irate for period I I I I I I j3. !Percent of I % I 0.00E+00I 6.23E-071 1.72E-06I 0.00E+00j japplicable limit* I I I I I I jc. !PARTICULATES jl. !Particulates with! Ci I 0.00E+00 0.00E+00I 0.00E+00 0.00E+00I N/A I !half lives>B daysl I I I j2. !Average release juci/secl 0.00E+00 0.00E+00I 0.00E+00 0.00E+00I I irate for period I I I I j3. !Percent of I % I 0.00E+00 0.00E+00I 0.00E+00 0.0OE+00I japplicable limit* I I I I j4. jGross alpha I Ci l<8.97E-07l<8.08E-07l<l.25E-06 <9.26E-071 I !radioactivity I I I I I jD. jTRITIUM
11. !Total Release I Ci I 1.64E+0ll 2.19E+0ll 1.85E+0ll 1.61E+0ll 21.3 12, !Average release luCi/secl 2.llE+00I 2.79E+00I 2.32E+00I 2.03E+00I I I Irate for period I I I I I I I 13, I Percent of I % I 1.20E-021 1.59E-021 1.32E-021 l.lSE-021 1 japplicable limit* I I I I I I I
  • Applicable limits are expressed in terms of dose. See Appendices Al.2-1 through Al.2-4 Al.1-10

2021 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT LIQUID EFFLUENTS CONTINUOUS MODE jNuclides Released! Unit I 1st Quarter! 2nd Quarter! 3rd Quarter! 4th Quarter!

H3 I Ci 8.61E-03 8.62E-03 BATCH MODE Nuclides Released Unit I 1st Quarter! 2nd Quarter! 3rd Quarter! 4th Quarter!

H3 Ci 4.97E+02 4.56E+02 4.58E+02 1.16E+02 CRSl Ci -------- I --------

MNS4 Ci 8.32E-06 j 7.56E-06 6.65E-06 j -------- I CO57 Ci -------- I -------- I COSS Ci j 5.97E-05 1. 0SE-04 4.87E-06 2.44E-06 j CO60 I Ci 1 2.18E-04 3.34E-04 l.76E-04 3.83E-05 j NI63 Ci j 7. 21E-04

' ZN65 Ci I -- - - -- - - -------- I --------

ZR95 Ci -------- I --------

NB95 Ci 3.97E-06 MO99 Ci TC99m Ci I -------- 1. 25E-06 I AGll0m Ci j 8. 21E-06 l.74E-05 3.02E-06 2.24E-06 j 1 SB124 Ci 7.0SE-06 -------- I SB125 Ci 1. 02E-05 4.30E-05 I -------- 5.78E-06 CS134 I Ci I -------- -------- I --------

CS137 Ci I -------- 5.56E-06

!131 Ci -------- I --------

!133 Ci -------- I --------

j *SN113 Ci -------- I --------

j *XE133 Ci j 1. 83E-04 4.95E-04 j 5.19E-05 2.62E-06 I *XE135 Ci 1 7.72E-06 3.77E-05 j 7.92E-06 I *XE135m Ci 4.34E-06 6.87E-06 j --------

  • DENOTES SUPPLEMENTAL ISOTOPES Al.1-11

2021 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT LIQUID EFFLUENTS-SUMMATION OF ALL RELEASES BATCH MODE Units I 1st I 2nd I 3rd I 4th IEst.

I Quarter I Quarter I Quarter I Quarter !Total I I I I I Error,%1 IA. I FISSION AND 1 I !ACTIVATION I I !PRODUCTS I

11. !Total Release I Ci I 1.03E-03I S.21E-041 1.91E-041 4.88E-05 12.7
12. !Average diluted luci/ml 7.56E-lll 2.83E-lll 1.59E-lll 9.87E-12 I !concentration I I I I I !during period I I I I
13. I Percent of I  % I 6.24E-041 6.95E-041 4.99E-041 2.72E-04 I !applicable limit I I I I I 1B. I TRITIUM
11. I Total Release I Ci 4.97E+021 4.56E+02 4.58E+021 1.16E+021 10.1 I
12. !Average diluted luCi/ml 3.6SE-0SI 2.48E-05 3.83E-0SI 2.3SE-0SI 1 I !concentration I I I I I I !during period I I I I I
13. I Percent of I  % 3.6SE+00I 2.48E+00 3.83E+00I 2.3SE+00I I !applicable limit I I I I IC. !DISSOLVED AND I !ENTRAINED GASES
11. !Total Release I Ci 1.91E-041 S.32E-041 S.98E-0SI 2.62E-06I 12.0
12. !Average diluted luCi/ml 1.40E-lll 2.90E-lll S.00E-121 S.30E-13I I !concentration I I I I I I !during period I I I I I
13. I Percent of I  % 7.0lE-061 1.4SE-0SI 2.S0E-061 2.6SE-071 japplicable limit I I I I I ID. IGROSS ALPHA Ci l<S.40E-04l<6.94E-04l<8.28E-0Sl<3.77E-0SI N/A I !RADIOACTIVITY I I I I I I !TOTAL RELEASE I I I I I IE. !VOLUME OF WASTE I Liters! 5.82E+06I 7.48E+06I 8.92E+0SI 4.06E+0SI 2.00 I I !RELEASED I I I I I I I IF. I VOLUME OF Liters I 2.64E+lll 2.18E+lll 1.20E+l0I 4.9SE+09I 3.48 I !DILUTION WATER I I I I I I !USED DURING I I I I I I !PERIOD I I I I I Al.1-12

2021 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT LIQUID EFFLUENTS-SUMMATION OF ALL RELEASES CONTINUOUS MODE Units 1st 2nd 3rd 4th I Est. I Quarter Quarter Quarter I Quarter !Total I Error,%1 IA. I FISSION AND I !ACTIVATION I !PRODUCTS

11. !Total Release I Ci 0.00E+00 0.00E+00 0.00E+00j 0.00E+00 N/A
12. !Average diluted luci/ml 0.00E+00 0.00E+00 0.00E+00I 0.O0E+00 I !concentration I I I !during period I I
13. I Percent of I I 0.00E+00I 0.00E+00I 0.00E+00I 0.00E+00 I !applicable limit I I I I I 1B. I TRITIUM jl. !Total Release I Ci 8.61E-03 8.62E-031 0.00E+00 0.00E+00I 53.8
12. !Average diluted luCi/ml l.27E-ll 1.30E-lll 0 . 00E+00 0.00E+00I I !concentration I I I I !during period I I I
13. I Percent of I  % l.27E-06 1.30E-06I 0.00E+00 0.00E+00I

!applicable limit I I I IC. I DISSOLVED AND I !ENTRAINED GASES

11. I Total Release I Ci I 0.00E+00 0.00E+00I 0.00E+00I 0.0OE+0OI N/A
12. !Average diluted luCi/ml 0.00E+00 0.00E+00I 0.00E+0OI 0.00E+00I I !concentration I I I I I !during period I I I I
13. I Percent of I I 0.00E+00 0.00E+00I O.O0E+O0I 0.00E+00I I lapplic~ble limit I I I I I ID. I GROSS ALPHA Ci l<l.16E-04l<l.47E-041 0.00E+00I 0.00E+00I N/A I !RADIOACTIVITY I I I I I I !TOTAL RELEASE I I I I I IE. I VOLUME OF WASTE Liters! l.25E+06I l.58E+061 0.00E+00I 0.00E+00I 2.00 I !RELEASED I I I I I IF. I VOLUME OF Liters I 6.77E+lll 6.85E+lll 0.00E+00I 0.00E+00I 3.48 I !DILUTION WATER I I I I I I IUSED DURING I I I I I I !PERIOD I I I I I Al.1-13

2021 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 1.82E+01 1.00E+00 evaporator bottoms, etc. Curies 1.19E+02 3.75E+00 b) Dry compressible waste, m3 3.31E+02 1.00E+00 contaminated equipment, etc. Curies 2.32E-01 6.48E+00 m3 c) Irradiated components, control Curies rods, etc.

d) Other (oil, soil, etc) m3 1.18E+00 1.00E+00 Curies 9.92E-04 3.75E+0O

2) Estimate of Principle Radionuclide Composition a) H-3 10 % Co-58 1% Sb-125 1% Cs-137 I 1%

Mn-54 1% Co-60 10% Cs-134 1%

Fe-55 33% Ni-63 40% C-14 2%

b) H-3 2% Co-58 2% Sb-125 1%

Mn-54 2% Co-60 31% Zr/Nb-95 2%

Fe-55 40% Ni-63 13% Cs-137 6% C-14 1%

d)

H-3 2% Co-60 40% Zr/Nb-95 6% Sb-125 2%

Fe-55 34% Ni-63 13% Mn-54 2% Cs-137 1%

3) Solid Waste Disposition No. of Shipments Mode of Transportation Destination 9 Truck Oak RidQe, TN 7 Truck Andrews, TX
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 .

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

Al.l-14

2021 Effluent and Waste Disposal Annual Report Yearly Release Rates GASES Fission and Activation Gases Total Release 9.67E-0l Curies Average Release Rate 3.07E-02 µCi/sec

% of Applicable Limits* y 3.00E-02 %

J3 5.39E-03 %

Iodines Total 1-131 Release 6.53E-06 Curies Average Release Rate 2.07E-07 µCi/sec

% of Applicable Limit* 3.92E-01 %

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

% of Applicable Limit* 0.00E+003/4 LIQUIDS Fission and Activation Products Total Release 1. 79E-03 Curies Average Diluted Concentration 3.69E-l 1 µCi/ml

% of Applicable Limits* Total Body 8.35E-01 %

Organ 2.51 E-0 I %

Al.l-1S

2021 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 2021 EFFLUENT APPLICABLE ESTIMATED AGE LOCATION %OF LIMIT ORGAN DOSE (mrem) GROUP DIST DIR (M) APPLICABLE (mrem)

(Toward) LIMIT QTR Liquid Total Body 1.71E-02 Child Receptor I 5.70E-01 l.5E+0 Liquid Liver 1.71 E-02 Child Receptor I l.71E-01 5.0E+0 Noble Gas Air Dose 3.45E-04 Any 594 (S) 3.45E-03 5.0E+0 (Gamma-mrad) Age Noble Gas Air dose l.22E-04 Any 594 (S) 6.I0E-04 l.OE+l (Beta-mrad) Age Iodines and Total Body l.27E-02 Child 659 (N) 8.47E-02 7.5E+0 Particulates Al.2-1

Summary of Maximum Individual Doses Second Quarter 2021 EFFLUENT APPLICABLE ESTIMATED AGE LOCATION %OF LIMIT ORGAN DOSE (mrem) GROUP DIST DIR(M) APPLICABLE (mrem)

(Toward) LIMIT QTR Liquid Total Body l.55E-02 Child Receptor 1 5. l 7E-0l l.5E+0 Liquid Liver l .5SE-02 Child Receptor 1 l .5SE-0l S.0E+0 Noble Gas Air Dose l.S0E-03 Any 651 (N) l.S0E-02 5.0E+0 (Gamma-mrad) Age Noble Gas Air dose S.46E-04 Any 651 (N) 2.73E-03 l .OE+l (Beta-mrad) Age Iodines and Total Body 3.l 7E-02 Child 659 (N) 2.IIE-01 7.SE+0 Particulates Al.2-2

Summary of Maximum Individual Doses Third Quarter 2021 EFFLUENT APPLICABLE ESTIMATED AGE LOCATION %OF LIMIT ORGAN DOSE (mrem) GROUP DIST DIR(M) APPLICABLE (mrem)

(Toward) LIMIT QTR Liquid Total Body l.45E-02 Child Receptor I 4.83E-0l l.5E+0 Liquid GI-LLI l .45E-02 Child Receptor I I .45E-0l 5.0E+0 Noble Gas Air Dose l.84E-03 Any 651 (N) I.84E-02 5.0E+0 (Gamma-mrad) Age Noble Gas Air dose 6.54E-04 Any 651 (N) 3.27E-03 l.0E+l (Beta-mrad) Age Iodines and Total Body 4.03E-02 Child 660 (NNE) 2.69E-Ol 7.5E+0 Particulates Al.2-3

Summary of Maximum Individual Doses Fourth Quarter 2021 EFFLUENT APPLICABLE ESTIMATED AGE LOCATION %OF LIMIT ORGAN DOSE (mrem) GROUP DIST DIR(M) APPLICABLE (mrem)

(Toward) LIMIT QTR Liquid Total Body 3.02E-03 Child Receptor 1 l.0lE-01 l.5E+0 Liquid GILLI 3.02E-03 Child Receptor 1 3.02E-02 5.0E+0 Noble Gas Air Dose 2.32E-03 Any 651 (N) 2.32E-02 5.0E+0 (Gamma-mrad) Age Noble Gas Air dose 8.35E-04 Any 651 (N) 4. ISE-03 l .OE+l (Beta-mrad) Age Iodines and Total Body 3.28E-02 Child 659 (N) 2.19E-01 7.5E+0 Particulates Al .2-4

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2021 2021 NEI GROUNDWATER PROTECTION INITIATIVE SAMPLE DATA A1 .3-1

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2021 Analysis of the Sample Data The Groundwater Protection Initiative (GPI) Sample Data for 2021 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 2021 Annual Radiological Environmental Operating Report. There were no positively identified gamma radionuclides from plant effluents detected in any of the GPI well 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.

No tritium values were found above LLD for 2021, though 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 2021 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 2021 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.

There were impacts from the COVID-19 pandemic on sampling resulting in slightly lower numbers of samples performed then historically. Sampling in support of the NEI 07-07 Groundwater Protection Initiative (GPI) was performed per our plant processes and procedures, though the efforts to prevent exposure of essential plant personnel to potential COVID-19 virus exposure led to reducing some sampling activities during periods of increasing trends in virus hospitalizations and positive test information provided by the State of Michigan. Our focus is always on the safety of our workers and the members of the public, and the CNP management made every effort to keep non-essential personnel offsite if possible and away from essential workers required for safe operation of the plant. The GPI is a voluntary industry initiative, so focus was again made on assuring essential regulatory required activities received priority. ODCM required sampling activities as part of the REMP Program are very similar to the GPI utilizing many of the same wells. This redundancy allowed for the scaling back of the non-essential GPI sampling to help reduce worker risk to virus exposure in 2021.

The sample data indicates that no radioactive spills or unidentified leaks have occurred in 2021 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 A1 .3-2

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2021 2021 GPI Sample Data Samples analyzed for tritium. Values noted are in microcuries per milliliter (uCi/mL). Lower Limit of Detection = LLD Sample Date W-1 W-2 W-3 W-4 W-5 W-6 W-7 W-8 W-9 W-10 1/21/2021 <LLD <LLD <LLD 1/22/2021 <LLD <LLD <LLD <LLD <LLD <LLD 1/26/2021 <LLD 3/2/2021 4/5/2021 4/16/2021 <LLD <LLD <LLD <LLD <LLD <LLD 4/20/2021 <LLD 4/23/2021 <LLD <LLD <LLD 5/14/2021 7/6/2021 7/16/2021 <LLD <LLD <LLD <LLD 7/19/2021 <LLD <LLD 7/22/2021 <LLD <LLD <LLD <LLD 10/4/2021 10/18/2021 10/22/2021 <LLD <LLD <LLD <LLD <LLD <LLD 11/1/2021 <LLD <LLD <LLD 11/9/2021 A1.3-3

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2021 2 PIS D Sample Date W-11 W-12 W-13 W-14 W-15 W-20 W-21 EW-19 MW-28 MW-29 1/21/2021 1/22/2021 <LLD <LLD <LLD <LLD <LLD <LLD <LLD 1/26/2021 3/2/2021 <LLD <LLD 4/5/2021 <LLD 4/16/2021 <LLD <LLD 4/20/2021 <LLD <LLD <LLD <LLD <LLD 4/23/2021 5/14/2021 7/6/2021 <LLD 7/16/2021 <LLD <LLD <LLD <LLD <LLD <LLD <LLD 7/19/2021 <LLD <LLD 7/22/2021 10/4/2021 <LLD 10/18/2021 <LLD <LLD 10/22/2021 <LLD <LLD <LLD <LLD <LLD <LLD <LLD 11/1/2021 11/9/2021 <LLD <LLD A1.3-4

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2021 2021 GPI Sample Data Sample Date MW-22S MW-22M MW-22D MW-24S MW-24M MW-24D MW-25S MW-25M MW-25D 1/21/2021 1/22/2021 1/26/2021 3/2/2021 <LLD <LLD <LLD <LLD <LLD <LLD 4/5/2021 4/16/2021 4/20/2021 4/23/2021 5/14/2021 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 7/6/2021 7/16/2021 7/19/2021 7/22/2021 10/4/2021 10/18/2021 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 10/22/2021 11/1/2021 11/9/2021 (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).

A1.3-5

Donald C. Cook Nuclear Plant Annual Radiological Effluent Release Report 2021 2021 GPI Sample Data Sample Date MW-26S MW-26M MW-26D MW-27S MW-27-M MW-27D SG-1 SG-2 SG-4 SG-5 1/21/2021 1/22/2021 <LLD <LLD <LLD <LLD 1/26/2021 3/2/2021 4/5/2021 4/16/2021 4/20/2021 <LLD <LLD <LLD <LLD 4/23/2021 5/14/2021 <LLD <LLD <LLD <LLD <LLD <LLD 7/6/2021 7/16/2021 <LLD <LLD <LLD <LLD 7/19/2021 7/22/2021 10/4/2021 10/18/2021 <LLD <LLD <LLD* <LLD <LLD <LLD 10/22/2021 11/1/2021 11/9/2021 (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).

A1.3-6

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = l/1/2021 - 3/31/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 0 13 5 0 0 0 18 NNE 0 3 0 0 0 0 3 NE 0 6 0 0 0 0 6 ENE 0 3 0 0 0 0 3 E 0 1 0 0 0 0 I ESE 0 0 0 0 0 0 0 SE 0 4 3 0 0 0 7 SSE 0 I 13 I 0 0 15 s 0 I 4 0 0 0 5 SSW 0 0 4 2 0 0 6 SW 0 I 6 0 0 0 7 WSW 0 5 2 0 0 0 7 w 0 5 I 0 0 0 6 WNW 0 9 0 0 0 0 9 NW 1 16 0 0 0 0 17 NNW I 22 3 0 0 0 26 Total 2 90 41 3 0 0 136 Calm Hours not Included above for : Total Period 3 Valid Hours for this Stability Class for: Total Period ' 136 Total Hours for Period 2160 A2.1-1

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 1/1/2021 - 3/31/202 l Elevation: Speed: SPIOM Direction: DIRIOM 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 l ll l 0 0 0 13 NNE l l l 0 0 0 3 NE l 5 0 0 0 0 6 ENE 0 2 0 0 0 0 2 E 0 0 0 0 0 0 0 ESE 0 l 0 0 0 0 l SE 0 3 4 0 0 0 7 SSE 0 5 2 0 0 0 7 s 0 2 2 l 0 0 5 SSW 0 0 4 0 0 0 4 SW 0 7 l 0 0 0 8 WSW 0 2 0 0 0 0 2 w 0 5 0 0 0 0 5 WNW 0 l 0 0 0 0 l NW l 4 0 0 0 0 5 NNW 2 7 0 0 0 0 9 Total 6 56 15 0 0 78 Calm Hours not Included above for : Total Period 3 Valid Hours for this Stability Class for: Total Period 78 Total Hours for Period 2160 A2.1-2

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 1/1/2021 - 3/31/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 2 9 0 0 0 0 11 NNE 0 3 0 0 0 0 3 NE 1 4 I 0 0 0 6 ENE 0 2 1 0 0 0 3 E 0 1 0 0 0 0 1 ESE 0 2 1 0 0 0 3 SE 0 4 3 0 0 0 7 SSE 0 IO 1 0 0 0 11 s 0 0 7 3 0 0 10 SSW 0 3 3 2 0 0 8 SW 0 12 5 0 0 0 17 WSW 1 7 3 0 0 0 11 w 1 0 0 0 0 0 1 WNW 1 2 0 0 0 0 3 NW 0 7 0 0 0 0 7 NNW 4 10 I 0 0 0 15 Total 10 76 26 5 0 0 117 Calm Hours not Included above for : Total Period 3 Valid Hours for this Stability Class for: Total Period 117 Total Hours for Period 2160 A2.1-3

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = l/1/2021 - 3/31/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 20 64 6 0 0 0 90 NNE 19 46 I 0 0 0 66 NE 38 35 7 0 0 0 80 ENE 40 25 9 0 0 0 74 E 24 15 14 1 0 0 54 ESE 16 23 5 0 0 0 44 SE 23 51 15 0 0 0 89 SSE 16 28 8 0 0 0 52 s 10 54 22 8 0 0 94 SSW 10 57 24 3 0 0 94 SW 8 61 25 0 0 0 94 WSW 9 30 23 3 0 0 65 w 7 44 13 0 0 0 64 WNW 6 21 3 0 0 0 30 NW 7 41 6 0 0 0 54 NNW 16 70 9 0 0 0 95 Total 269 665 190 15 0 0 1139 Calm Hours not Included above for : Total Period 3 Valid Hours for this Stability Class for: Total Period 1139 Total Hours for Period 2160 A2.1-4

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 1/1/2021

  • 3/31/2021 Elevation: Speed: SPIOM Direction: DIRJOM 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 19 14 0 0 0 0 33 NNE 31 8 0 0 0 0 39 NE 23 13 I 0 0 0 37 ENE 15 4 0 0 0 0 19 E 15 3 0 0 0 0 18 ESE 12 9 0 0 0 0 21 SE 15 23 0 0 0 0 38 SSE 25 40 5 0 0 0 70 s 13 21 19 1 0 0 54 SSW 7 14 10 0 0 0 31 SW 0 24 7 0 0 0 31 WSW 3 3 4 0 0 0 10 w 4 2 0 0 0 0 6 WNW 7 6 0 0 0 0 13 NW 10 10 0 0 0 0 20 NNW 8 5 0 0 0 0 13 Total 207 199 46 0 0 453 Calm Hours not Included above for : Total Period 3 Valid Hours for this Stability Class for: Total Period 453 Total Hours for Period 2160 A2.1-5

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 1/1/2021 - 3/31/2021 Elevation: Speed: SPIOM 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 4 0 0 0 0 0 4 NNE 3 0 0 0 0 0 3 NE 9 0 0 0 0 0 9 ENE 4 I 0 0 0 0 5 E 16 0 0 0 0 0 16 ESE 8 0 0 0 0 0 8 SE 15 4 0 0 0 0 19 SSE 21 8 0 0 0 0 29 s 9 0 0 0 0 0 9 SSW I 0 0 0 0 0 1 SW I 0 0 0 0 0 1 WSW I 1 0 0 0 0 2 w 4 0 0 0 0 0 4 WNW 4 0 0 0 0 0 4 NW 5 0 0 0 0 0 5 NNW 2 0 0 0 0 0 2 Total 107 14 0 0 0 0 121 Calm Hours not Included above for : Total Period 3 Valid Hours for this Stability Class for: Total Period 121 Total Hours for Period 2160 A2.1-6

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 1/1/2021 - 3/31/2021 Elevation: Speed: SPIOM Direction: DIRIOM Lapse: DT60M Stability Class G Delta Temperature Extremely Stable Wind Speed (mph)

Wind Dire1,;tion 1-4 4-8 8-13 13 - 19 19-25 > 25 Total N l 0 0 0 0 0 l NNE 2 0 0 0 0 0 2 NE 2 0 0 0 0 0 2 ENE 11 0 0 0 0 0 11 E 14 0 0 0 0 0 14 ESE 23 0 0 0 0 0 23 SE 25 l 0 0 0 0 26 SSE 13 0 0 0 0 0 13 s IO 0 0 0 0 0 10 SSW 5 0 0 0 0 0 5 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 2 0 0 0 0 0 2 WNW 0 0 0 0 0 0 0 NW 2 0 0 0 0 0 2 NNW 2 0 0 0 0 0 2 Total 112 0 0 0 0 113 Calm Hours not Included above for : Total Period 3 Valid Hours for this Stability Class for: Total Period 113 Total Hours for Period 2160 A2.1-7

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Summary of All Stability Classes Total Period Period of Record = 1/1/2021

  • 3/31/2021 Elevation: Speed: SPIOM Direction: DIRIOM Lapse: DT60M Delta Temperature Wind Speed (mph)

Wind Direction 1-4 4-8 8 -13 13-19 19 - 25 > 25 Total N 47 111 12 0 0 0 170 NNE 56 61 2 0 0 0 119 NE 74 63 9 0 0 0 146 ENE 70 37 10 0 0 0 117 E 69 20 14 I 0 0 104 ESE 59 35 6 0 0 0 100 SE 78 90 25 0 0 0 193 SSE 75 92 29 I 0 0 197 s 42 78 54 13 0 0 187 SSW 23 74 45 7 0 0 149 SW 9 105 44 0 0 0 158 WSW 14 48 32 3 0 0 97 w 18 56 14 0 0 0 88 WNW 18 39 3 0 0 0 60 NW 26 78 6 0 0 0 110 NNW 35 114 13 0 0 0 162 Total 713 1101 318 25 0 0 2157 Calm Hours not Included above for : Total Period 3 Variable Direction Hours for: Total Period 0 Invalid Hours for: Total Period 0 Valid Hours for this Stability Class for: Total Period 2157 Total Hours for Period 2160 A2.1-8

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 4/1/2021 - 6/30/2021 Elevation: Speed: SPI0M Direction: DIRI0M 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 5 82 18 0 0 0 105 NNE I 7 0 0 0 0 8 NE 2 0 0 0 0 0 2 ENE 0 4 0 0 0 0 4 E 0 0 0 0 0 0 0 ESE I I 0 0 0 0 2 SE 0 4 2 0 0 0 6 SSE 0 8 9 0 0 0 17 s 2 7 2 I 0 0 12 SSW 0 12 5 0 0 0 17 SW 2 36 6 0 0 0 44 WSW 2 26 2 0 0 0 30 w 4 24 I 0 0 0 29 WNW 7 13 0 0 0 0 20 NW 5 21 0 0 0 0 26 NNW 11 73 4 0 0 0 88 Total 42 318 49 0 0 410 Calm Hours not Included above for : Total Period 12 Valid Hours for this Stability Class for: Total Period 410 Total Hours for Period 2184 A2.2-1

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 4/1/2021 - 6/30/2021 Elevation: Speed : SPIOM Direction: DIRIOM 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 2 20 2 0 0 0 24 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 4 2 0 0 0 0 6 SE l l 2 0 0 0 4 SSE I 7 2 0 0 0 10 s 0 9 5 0 0 0 14 SSW 2 10 3 0 0 0 15 SW 4 17 0 0 0 0 21 WSW l 7 l 0 0 0 9 w 2 l 0 0 0 0 3 WNW 2 3 0 0 0 0 5 NW l l 0 0 0 0 2 NNW 3 9 l 0 0 0 13 Total 23 87 16 0 0 0 126 Calm Hours not Included above for : Total Period 12 Valid Hours for this Stability Class for: Total Period 126 Total Hours for Period 2184 A2.2-2

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 4/1/2021 - 6/30/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 5 5 1 0 0 0 11 NNE 1 2 0 0 0 0 3 NE 1 2 0 0 0 0 3 ENE 3 I 0 0 0 0 4 E 1 I 0 0 0 0 2 ESE 0 0 0 0 0 0 0 SE 2 4 I 0 0 0 7 SSE 2 5 I 0 0 0 8 s 2 6 5 0 0 0 13 SSW 1 5 6 I 0 0 13 SW 0 14 2 0 0 0 16 WSW 2 I 0 0 0 0 3 w 4 2 0 0 0 0 6 WNW 3 2 0 0 0 0 5 NW 4 0 0 0 0 0 4 NNW 7 5 2 0 0 0 14 Total 38 55 18 0 0 112 Calm Hours not Included above for : Total Period 12 Valid Hours for this Stability Class for: Total Period 112 Total Hours for Period 2184 A2.2-3

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 4/1/2021 - 6/30/2021 Elevation: Speed: SPIOM 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 27 54 3 0 0 0 84 NNE 12 6 0 0 0 0 18 NE 6 16 0 0 0 0 22 ENE 7 8 0 0 0 0 15 E 6 4 0 0 0 0 JO ESE 8 6 0 0 0 0 14 SE 12 8 0 0 0 0 20 SSE 11 20 6 0 0 0 37 s 9 42 21 2 0 0 74 SSW 15 31 23 I 0 0 70 SW 14 29 2 0 0 0 45 WSW 16 9 0 0 0 0 25 w JO 5 0 0 0 0 15 WNW 7 5 0 0 0 0 12 NW 10 5 0 0 0 0 15 NNW 36 23 3 0 0 0 62 Total 206 271 58 3 0 0 538 Calm Hours not Included above for : Total Period 12 Valid Hours for this Stability Class for: Total Period 538 Total Hours for Period 2184 A2.2-4

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 4/1/2021 - 6/30/2021 Elevation: Speed: SPIOM 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 45 14 0 0 0 0 59 NNE 19 1 0 0 0 0 20 NE 13 0 0 0 0 0 13 ENE 8 0 0 0 0 0 8 E 14 2 0 0 0 0 16 ESE 14 4 0 0 0 0 18 SE 24 13 0 0 0 0 37 SSE 30 33 0 0 0 0 63 s 23 73 9 0 0 0 105 SSW 14 38 12 0 0 0 64 SW 12 23 1 0 0 0 36 WSW 12 6 0 0 0 0 18 w 6 1 0 0 0 0 7 WNW 9 1 0 0 0 0 10 NW 15 1 0 0 0 0 16 NNW 23 1 0 0 0 0 24 Total 281 211 22 0 0 0 514 Calm Hours not Included above for : Total Period 12 Valid Hours for this Stability Class for: Total Period 514 Total Hours for Period 2184 A2.2-5

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 4/ 1/2021 - 6/30/2021 Elevation : Speed: SPIOM Direction: DIRIOM 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 6 0 0 0 0 0 6 NNE 11 0 0 0 0 0 11 NE 12 0 0 0 0 0 12 ENE 12 0 0 0 0 0 12 E 25 0 0 0 0 0 25 ESE 21 0 0 0 0 0 21 SE 18 5 0 0 0 0 23 SSE 34 8 0 0 0 0 42 s 18 13 0 0 0 0 31 SSW 13 0 0 0 0 0 13 SW 5 I 0 0 0 0 6 WSW 4 0 0 0 0 0 4 w 2 0 0 0 0 0 2 WNW 3 0 0 0 0 0 3 NW 6 0 0 0 0 0 6 NNW 11 0 0 0 0 0 1I Total 201 27 0 0 0 0 228 Calm Hours not Included above for : Total Period 12 Valid Hours for this Stability Class for: Total Period 228 Total Hours for Period 2184 A2.2-6

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 4/1/2021 - 6/30/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 2 0 0 0 0 0 2 NNE 4 0 0 0 0 0 4 NE 14 0 0 0 0 0 14 ENE 20 0 0 0 0 0 20 E 33 0 0 0 0 0 33 ESE 25 0 0 0 0 0 25 SE 38 0 0 0 0 0 38 SSE 40 0 0 0 0 0 40 s 33 0 0 0 0 0 33 SSW 16 0 0 0 0 0 16 SW 3 0 0 0 0 0 3 WSW 4 0 0 0 0 0 4 w 2 0 0 0 0 0 2 WNW 2 0 0 0 0 0 2 NW 4 0 0 0 0 0 4 NNW 4 0 0 0 0 0 4 Total 244 0 0 0 0 0 244 Calm Hours not Included above for : Total Period 12 Valid Hours for this Stability Class for: Total Period 244 Total Hours for Period 2184 A2.2-7

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Summary of All Stability Classes Total Period Period of Record = 4/1/2021 - 6/30/2021 Elevation: Speed: SPJOM Direction: DIRJOM Lapse: DT60M Delta Temperature Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13 - 19 19- 25 > 25 Total N 92 175 24 0 0 0 291 NNE 48 16 0 0 0 0 64 NE 48 18 0 0 0 0 66 ENE 50 13 0 0 0 0 63 E 79 7 0 0 0 0 86 ESE 73 13 0 0 0 0 86 SE 95 35 5 0 0 0 135 SSE 118 81 18 0 0 0 217 s 87 150 42 3 0 0 282 SSW 61 96 49 2 0 0 208 SW 40 120 11 0 0 0 171 WSW 41 49 3 0 0 0 93 w 30 33 l 0 0 0 64 WNW 33 24 0 0 0 0 57 NW 45 28 0 0 0 0 73 NNW 95 111 10 0 0 0 216 Total 1035 969 163 5 0 0 2172 Calm Hours not Included above for : Total Period 12 Variable Direction Hours for: Total Period 0 Invalid Hours for: Total Period 0 Valid Hours for this Stability Class for: Total Period 2172 Total Hours for Period 2184 A2.2-8

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 7/1/2021 - 9/30/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 16 41 0 0 0 0 57 NNE 4 2 0 0 0 0 6 NE 2 4 0 0 0 0 6 ENE 3 2 0 0 0 0 5 E 3 2 0 0 0 0 5 ESE 5 0 0 0 0 0 5 SE 3 3 0 0 0 0 6 SSE 0 I 0 0 0 0 l s 0 10 4 0 0 0 14 SSW 2 11 I 0 0 0 14 SW I 14 0 0 0 0 15 WSW 6 11 0 0 0 0 17 w 4 11 0 0 0 0 15 WNW 5 2 0 0 0 0 7 NW 13 7 0 0 0 0 20 NNW 19 31 0 0 0 0 50 Total 86 152 5 0 0 0 243 Calm Hours not Included above for : Total Period 301 Valid Hours for this Stability Class for: Total Period 243 Total Hours for Period 2208 A2.3-1

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 7/1/2021 - 9/30/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 5 0 0 0 0 9 NNE I 0 0 0 0 0 I NE I I 0 0 0 0 2 ENE 0 0 0 0 0 0 0 E 2 2 0 0 0 0 4 ESE 3 0 0 0 0 0 3 SE 4 l 0 0 0 0 5 SSE l 2 0 0 0 0 3 s I 11 I 0 0 0 13 SSW I 17 I 0 0 0 19 SW I 14 0 0 0 0 15 WSW 2 3 0 0 0 0 5 w 2 2 0 0 0 0 4 WNW 2 I 0 0 0 0 3 NW 5 2 0 0 0 0 7 NNW 6 I 0 0 0 0 7 Total 36 62 2 0 0 0 100 Calm Hours not Included above for : Total Period 301 Valid Hours for this Stability Class for: Total Period 100 Total Hours for Period 2208 A2.3-2

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 7/1/2021 - 9/30/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 7 2 0 0 0 0 9 NNE 2 0 0 0 0 0 2 NE 2 0 0 0 0 0 2 ENE 3 I 0 0 0 0 4 E 0 0 0 0 0 0 0 ESE 3 I 0 0 0 0 4 SE 8 2 0 0 0 0 10 SSE 4 1 0 0 0 0 5 s 2 15 3 I 0 0 21 SSW 4 26 3 0 0 0 33 SW 3 10 1 0 0 0 14 WSW 0 4 0 0 0 0 4 w 3 2 0 0 0 0 5 WNW 2 3 0 0 0 0 5 NW 5 I 0 0 0 0 6 NNW 5 2 0 0 0 0 7 Total 53 70 7 0 0 131 Calm Hours not Included above for : Total Period 301 Valid Hours for this Stability Class for: Total Period 131 Total Hours for Period 2208 A2.3-3

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 7/1/2021 - 9/30/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 47 16 0 0 0 0 63 NNE 21 I 0 0 0 0 22 NE 14 3 0 0 0 0 17 ENE 6 0 0 0 0 0 6 E 11 0 0 0 0 0 11 ESE II 4 0 0 0 0 15 SE 12 0 0 0 0 0 12 SSE IO 4 0 0 0 0 14 s 15 47 8 0 0 0 70 SSW 15 61 19 0 0 0 95 SW IO 22 I 0 0 0 33 WSW 9 0 0 0 0 0 9 w 11 I I 0 0 0 13 WNW 8 2 0 0 0 0 IO NW 8 0 0 0 0 0 8 NNW 35 8 0 0 0 0 43 Total 243 169 29 0 0 0 441 Calm Hours not Included above for : Total Period 301 Valid Hours for this Stability Class for: Total Period 441 Total Hours for Period 2208 A2.3-4

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 7/1/2021 - 9/30/2021 Elevation: Speed: SPIOM 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 63 11 0 0 0 0 74 NNE 42 I 0 0 0 0 43 NE 33 I 0 0 0 0 34 ENE 16 0 0 0 0 0 16 E 11 0 0 0 0 0 11 ESE 29 0 0 0 0 0 29 SE 34 0 0 0 0 0 34 SSE 34 3 0 0 0 0 37 s 48 49 7 0 0 0 104 SSW 31 44 5 0 0 0 80 SW 23 9 0 0 0 0 32 WSW 5 2 0 0 0 0 7 w 6 6 0 0 0 0 12 WNW 5 3 0 0 0 0 8 NW 8 0 0 0 0 0 8 NNW 23 2 0 0 0 0 25 Total 411 131 12 0 0 0 554 Calm Hours not Included above for : Total Period 301 Valid Hours for this Stability Class for: Total Period 554 Total Hours for Period 2208 A2.3-5

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 7/1/2021 - 9/30/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 6 0 0 0 0 0 6 NNE 6 0 0 0 0 0 6 NE 13 0 0 0 0 0 13 ENE 15 0 0 0 0 0 15 E 15 0 0 0 0 0 15 ESE 24 0 0 0 0 0 24 SE 13 0 0 0 0 0 13 SSE 32 0 0 0 0 0 32 s 22 1 0 0 0 0 23 SSW 13 0 0 0 0 0 13 SW 5 0 0 0 0 0 5 WSW 1 0 0 0 0 0 1 w 3 0 0 0 0 0 3 WNW 2 0 0 0 0 0 2 NW 5 0 0 0 0 0 5 NNW 1 1 0 0 0 0 2 Total 176 2 0 0 0 0 178 Calm Hours not Included above for : Total Period 301 Valid Hours for this Stability Class for: Total Period 178 Total Hours for Period 2208 A2.3-6

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 7/ 1/2021 - 9/30/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 0 0 0 0 NNE 3 1 0 0 0 0 4 NE 11 0 0 0 0 0 1I ENE 35 0 0 0 0 0 35 E 53 0 0 0 0 0 53 ESE 39 0 0 0 0 0 39 SE 32 0 0 0 0 0 32 SSE 35 0 0 0 0 0 35 s 28 0 0 0 0 0 28 SSW 15 0 0 0 0 0 15 SW 3 0 0 0 0 0 3 WSW 2 0 0 0 0 0 2 w I 0 0 0 0 0 1 WNW I 0 0 0 0 0 I NW 0 0 0 0 0 0 0 NNW I 0 0 0 0 0 I Total 259 0 0 0 0 260 Calm Hours not Included above for : Total Period 301 Valid Hours for this Stability Class for: Total Period 260 Total Hours for Period 2208 A2. .3-7

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Summary of All Stability Classes Total Period Period of Record = 7/1/2021 - 9/30/2021 Elevation: Speed: SPlOM Direction: DIRlOM Lapse: DT60M Delta Temperature Wind Speed (mph)

Wind Direction 1-4 4-8 8- 13 13 - 19 19-25 > 25 Total N 143 75 0 0 0 0 218 NNE 79 5 0 0 0 0 84 NE 76 9 0 0 0 0 85 ENE 78 3 0 0 0 0 81 E 95 4 0 0 0 0 99 ESE 114 5 0 0 0 0 119 SE 106 6 0 0 0 0 112 SSE 116 11 0 0 0 0 127 s I 16 133 23 I 0 0 273 SSW 81 159 29 0 0 0 269 SW 46 69 2 0 0 0 117 WSW 25 20 0 0 0 0 45 w 30 22 I 0 0 0 53 WNW 25 11 0 0 0 0 36 NW 44 IO 0 0 0 0 54 NNW 90 45 0 0 0 0 135 Total 1264 587 55 0 0 1907 Calm Hours not Included above for : Total Period 301 Variable Direction Hours for: Total Period 0 Invalid Hours for: Total Period 0 Valid Hours for this Stability Class for: Total Period 1907 Total Hours for Period 2208 A2.3-8

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 10/1/2021 - 12/31/2021 Elevation: Speed: SPIOM Direction: DIR\OM 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 2 5 0 0 0 0 7 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E I 0 0 0 0 0 I ESE 0 0 0 0 0 0 0 SE 0 2 0 0 0 0 2 SSE 0 I 0 0 0 0 I s 0 I 0 0 0 0 I SSW 0 2 0 0 0 0 2 SW 0 0 I 0 0 0 I WSW 0 I I 0 0 0 2 w 0 3 0 0 0 0 3 WNW 0 4 0 0 0 0 4 NW 0 4 0 0 0 0 4 NNW 0 6 0 0 0 0 6 Total 3 29 2 0 0 0 34 Calm Hours not Included above for : Total Period 622 Valid Hours for this Stability Class for: Total Period 34 Total Hours for Period 2208 A2.4-1

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 10/1 /2021 - 12/31/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 I 0 0 0 0 0 l NNE l 0 0 0 0 0 l NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 2 0 0 0 0 2 ESE 0 I 0 0 0 0 I SE 0 3 l 0 0 0 4 SSE 0 0 0 0 0 0 0 s 0 2 2 0 0 0 4 SSW 0 2 l 0 0 0 3 SW 0 5 3 0 0 0 8 WSW 0 l I 0 0 0 2 w 0 2 0 0 0 0 2 WNW 0 4 0 0 0 0 4 NW 0 2 0 0 0 0 2 NNW 0 2 0 0 0 0 2 Total 2 26 8 0 0 0 36 Calm Hours not Included above for : Total Period 622 Valid Hours for this Stability Class for: Total Period 36 Total Hours for Period 2208 A2.4-2

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 10/1/2021 - 12/3 1/2021 Elevation: Speed: SPIOM Direction: DIR\OM 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 3 0 0 0 0 4 NNE 1 0 0 0 0 0 1 NE 1 1 0 0 0 0 2 ENE 0 0 0 0 0 0 0 E 0 5 0 0 0 0 5 ESE 0 2 0 0 0 0 2 SE 0 3 1 0 0 0 4 SSE 0 2 0 0 0 0 2 s 0 7 0 0 0 0 7 SSW 0 5 5 0 0 0 10 SW 0 0 5 0 0 0 5 WSW 0 1 0 0 0 0 1 w 0 2 0 0 0 0 2 WNW 1 7 0 0 0 0 8 NW 1 1 0 0 0 0 2 NNW 0 6 0 0 0 0 6 Total 5 45 11 0 0 0 61 Calm Hours not Included above for : Total Period 622 Valid Hours for this Stability Class for: Total Period 61 Total Hours for Period 2208 A2.4-3

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 10/1/2021 - 12/3 l/2021 Elevation: Speed: SPIOM Direction: DIRJOM 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 12 24 0 0 0 0 36 NNE 16 3 0 0 0 0 19 NE 9 3 0 0 0 0 12 ENE 6 5 0 0 0 0 11 E 16 27 2 0 0 0 45 ESE 13 23 0 0 0 0 36 SE 12 44 7 0 0 0 63 SSE 9 43 8 0 0 0 60 s 4 64 38 15 I 0 122 SSW 6 18 33 5 I 0 63 SW 4 18 20 3 0 0 45 WSW 7 14 19 I 0 0 41 w 9 27 27 0 0 0 63 WNW 2 36 14 I 0 0 53 NW 5 51 7 0 0 0 63 NNW 6 50 7 0 0 0 63 Total 136 450 182 25 2 0 795 Calm Hours not Included above for : Total Period 622 Valid Hours for this Stability Class for: Total Period 795 Total Hours for Period 2208 A2.4-4

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = 10/1/2021 - 12/31/202 l Elevation: Speed: SPIOM 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 26 12 0 0 0 0 38 NNE 14 l 0 0 0 0 15 NE 7 0 0 0 0 0 7 ENE 11 0 0 0 0 0 11 E 12 3 0 0 0 0 15 ESE 11 4 0 0 0 0 15 SE 10 28 4 0 0 0 42 SSE 22 30 4 0 0 0 56 s 12 54 19 0 0 0 85 SSW 5 10 16 0 0 0 31 SW 2 IO 5 0 0 0 17 WSW 4 10 1 0 0 0 15 w 3 IO 2 0 0 0 15 WNW 7 13 3 0 0 0 23 NW 12 22 0 0 0 0 34 NNW 23 25 8 0 0 0 56 Total 181 232 62 0 0 0 475 Calm Hours not Included above for : Total Period 622 Valid Hours for this Stability Class for: Total Period 475 Total Hours for Period 2208 A2.4-5

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = I 0/1/2021 - 12/3 l/2021 Elevation: Speed: SPIOM Direction: DIRIOM 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 0 0 4 NNE 3 0 0 0 0 0 3 NE 6 0 0 0 0 0 6 ENE 6 0 0 0 0 0 6 E 3 0 0 0 0 0 3 ESE 2 0 0 0 0 0 2 SE IO 0 0 0 0 0 IO SSE 32 0 0 0 0 0 32 s IO 5 0 0 0 0 15 SSW 2 0 0 0 0 0 2 SW I 0 0 0 0 0 I WSW I 0 0 0 0 0 I w 0 0 0 0 0 0 0 WNW I 0 0 0 0 0 I NW 0 0 0 0 0 0 0 NNW I 0 0 0 0 0 I Total 82 5 0 0 0 0 87 Calm Hours not Included above for : Total Period 622 Valid Hours for this Stability Class for: Total Period 87 Total Hours for Period 2208 A2.4-6

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Total Period Period of Record = I 0/ 1/202 l - 12/31/202 l Elevation: Speed: SPIOM Direction: DIRIOM 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 0 0 0 0 NNE I 0 0 0 0 0 I NE 6 0 0 0 0 0 6 ENE ll 0 0 0 0 0 ll E 16 0 0 0 0 0 16 ESE 14 0 0 0 0 0 14 SE 13 0 0 0 0 0 13 SSE 25 0 0 0 0 0 25 s 5 0 0 0 0 0 5 SSW 2 0 0 0 0 0 2 SW I 0 0 0 0 0 I WSW 2 0 0 0 0 0 2 w 0 0 0 0 0 0 0 WNW I 0 0 0 0 0 I NW I 0 0 0 0 0 I NNW 0 0 0 0 0 0 0 Total 98 0 0 0 0 0 98 Calm Hours not Included above for : Total Period 622 Valid Hours for this Stability Class for: Total Period 98 Total Hours for Period 2208 A2.4-7

Site: AEP Cook Joint Frequency Distribution Hours at Each Wind Speed and Direction Summary of All Stability Classes Total Period Period of Record = 10/1 /2021 - 12/31/2021 Elevation: Speed: SPIOM Direction: DIRJOM Lapse: DT60M Delta Temperature Wind Speed (mph)

Wind Direction 1-4 4-8 8-13 13 - 19 19-25 > 25 Total N 46 44 0 0 0 0 90 NNE 36 4 0 0 0 0 40 NE 29 4 0 0 0 0 33 ENE 34 5 0 0 0 0 39 E 48 37 2 0 0 0 87 ESE 40 30 0 0 0 0 70 SE 45 80 13 0 0 0 138 SSE 88 76 12 0 0 0 176 s 31 133 59 15 1 0 239 SSW 15 37 55 5 1 0 113 SW 8 33 34 3 0 0 78 WSW 14 27 22 1 0 0 64 w 12 44 29 0 0 0 85 WNW 12 64 17 I 0 0 94 NW 19 80 7 0 0 0 106 NNW 30 89 15 0 0 0 134 Total 507 787 265 25 2 0 1586 Calm Hours not Included above for : Total Period 622 Variable Direction Hours for: Total Period 0 Invalid Hours for: Total Period 0 Valid Hours for this Stability Class for: Total Period 1586 Total Hours for 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 2021 reporting period.

A3.0-l

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