SVP-22-026, Radioactive Effluent Release Report for 2021

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Radioactive Effluent Release Report for 2021
ML22119A077
Person / Time
Site: Quad Cities  Constellation icon.png
Issue date: 04/29/2022
From: Wake B
Constellation Energy Generation
To:
Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
SVP-22-026
Download: ML22119A077 (80)
v • d • e


Text

Constellation .

SVP-22-026 10 CFR 50.36a April 29, 2022 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Quad Cities Nuclear Power Station, Units 1 and 2 Renewed Facility Operating License Nos. DPR-29 and DPR-30 NRC Docket Nos. 50-254 and 50-265

Subject:

Radioactive Effluent Release Report for 2021 Pursuant to Technical Specifications Section 5.6.3 and 10 CFR 50.36a, enclosed is the Quad Cities Nuclear Power Station Radioactive Effluent Release Report for January through December 2021.

Should you have any questions concerning this letter, please contact Ms. Anna Wilson at (309) 227-3200.

Brian Wake Site Vice President Quad Cities Nuclear Power Station Attachments:

1. 2021 Annual Radioactive Effluent Release Report cc: Regional Administrator- NRC Region Ill NRC Senior Resident Inspector - Quad Cities Nuclear Power Station

Attachment 1 2021 Annual Radioactive Effluent Release Report

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Effluent & Waste Disposable Summary Gaseous Effluents - Summation of all Releases Period: January - December 2021 Unit: 1 & 2 A. Fission & Activation Gases Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Est. Total Error%

1. Total Release Ci l.24E+0l l.lOE+0l 8.44E+00 1.0lE+0l 4.19E+0l 12.7
2. Average release rate for the period µCi/sec l.59E+00 1.40E+00 l.06E+00 1.27E+00
3. Percent of ODCM limit Ill %y 5.46E-03 4.78E-03 3.75E-03 4.30E-03

%~ 2.81E-04 2.43E-04 2.07E-04 2.40E-04 B. Iodine

1. Total Iodine - 131 Ci 6.76E-05 <LLD(4) <LLD(4) <LLD(4) 6.76E-05 I 41.7 I
2. Average release rate for the period µCi/sec 8.69E-06 <LLD(4) <LLD(4) <LLD(4)
3. Percent of ODCM limit  % N/A N/A N/A N/A C. Particulates 131
1. Particulates with half-lives >8 days Ci 8.61E-04 l.S0E-04 2.43E-04 S.09E-04 1.76E-03 I 32.2 I
2. Average release rate for the period µCi/sec 1.llE-04 l.91E-05 3.06E-05 6.40E-05
3. Percent of ODCM limit  % N/A N/A N/A N/A
4. Gross alpha radioactivity Ci <LLD(4) <LLD(4) <LLD(4) <LLD(4)

D. Tritium

1. Total Release Ci l.92E+0l l.98E+0l l.94E+0l 1.87E+0l 7.72E+0l I 6.3 I 2.Average release rate for the period µCi/sec 2.47E+00 2.52E+00 2.44E+00 2.35E+00
3. Percent of ODCM limit  % N/A N/A N/A N/A E. Carbon - 14
1. Total Release Ci 6.59E+00 7.64E+00 7.58E+00 7.41E+00 2.92E+0l I
2. Average release rate for the period µCi/sec 8.47E-01 9.72E-01 9.53E-01 9.32E-01
3. Percent of ODCM Limit  % N/A N/A N/A N/A F. Iodine 131 & 133, Tritium, Particulate, and C-14
1. Percent of ODCM Organ Dose Limit  % I 6.27E-01 I 7.07E-01 I 7.08E-01 I 6.89E-01 I (1) % Noble gas gamma/noble gas beta dose limits (2) Percent of ODCM Limit is captured in aggregate in section F (3) Nuclides with less than 8-day half-lives are not included per the ODCM, with the exception of La-140 and Mo-99 (4) Gaseous Effluent LLDs reported on page 9 of 78 1 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Effluent & Waste Disposable Summary Gaseous Effluents Release Point Main Chimney (Elevated) Continuous Mode Period: January- December 2021 Unit: 1 & 2 Continuous Mode Nuclides Released Jan - Mar 2021 Apr - Jun 2021 Jul - Sep 2021 Oct - Dec 2021 Total

1. FISSION AND ACTIVATION GASES: Curies Kr-85 4.G0E-03 l.27E-01 6.74E-02 3.BlE-01 5.B0E-01 Kr-85m 5.33E-01 5.33E-01 4.G0E-02 5.59E-02 l.17E+00 Kr-87 2.66E-01 2.32E-01 2.0GE-01 2.34E-01 9.38E-01 Kr-88 7.44E-01 7.35E-01 1.19E-01 l.39E-01 l.74E+00 Xe-133 6.72E-01 6.79E-01 l.59E-01 2.0SE-01 l.71E+00 Xe-135 2.G0E-01 2.25E-01 1. 74E-01 2.13E-01 8.72E-01 Xe-135m l.64E+00 l.35E+00 1.40E+00 l.68E+00 6.07E+00 Xe-138 6.22E+00 5.0lE+00 5.SlE+00 6.29E+00 2.30E+0l Ar-41 2.04E+00 2.l0E+00 7.G0E-01 8.52E-01 5.75E+00 Total for Period l.24E+0l l.lOE+0l 8.44E+00 l.0lE+0l 4.19E+0l
2. IODINES: Curies 1-131 6.76E-05 <LLD (1) <LLD (1) <LLD (1) 6.76E-05 1-133 l.SGE-04 <LLD (1) <LLD (1) <LLD (1) l.SGE-04 1-135 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Total for Period 2.24E-04 <LLD (1) <LLD (1) <LLD (1) 2.24E-04

3. PARTICULATES WITH HALF-LIVES> 8 DAYS 121: Curies Cr-51 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Mn-54 <LLD (1) <LLD (1) <LLD (1) l.70E-04 l.70E-04 Fe-55 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Fe-59 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Co-58 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Co-60 2.92E-05 1.20E-05 <LLD (1) l.35E-04 l.76E-04 Ni-63 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Zn-65 <LLD (1) <LLD (1) <LLD (1) l.07E-04 l.07E-04 Sr-89 3.90E-05 <LLD (1) l.63E-04 7.44E-05 2.76E-04 Sr-90 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Zr/Nb-951 31 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Mo-99 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Ag-ll0m <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Cs-134 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Cs-137 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Ba/La -140131 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Ce-141 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Ce-144 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Total for Period 6.82E-05 l.20E-05 l.63E-04 4.87E-04 7.29E-04

4. CARBON - 14: Curies C-14 6.39E+00 7.42E+00 7.36E+00 7.19E+00 2.84E+0l
5. TRITIUM: Curies H-3 l.58E+0l l.77E+0l l.70E+0l l.66E+0l 6.71E+0l
6. GROSS ALPHA: Curies Gross Alpha <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

(1) Gaseous LLDs reported on page 9 of 78 (2) Includes La-140 and Mo-99 per the ODCM (3) Equilibrium assumed, i.e., value for each nuclide is1/2 of total 2 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Effluent & Waste Disposable Summary Gaseous Effluents Release Point Main Chimney (Elevated) Batch Mode Period: January - December 2021 Unit: 1 & 2 Batch Mode (1)

Nuclides Released Jan - Mar 2021 Apr - Jun 2021 Jul - Sep 2021 Oct - Dec 2021 Total

1. FISSION AND ACTIVATION GASES: Curies Kr-85 N/A (1) N/A (1) N/A(l) N/A (1) N/A(l)

Kr-85m N/A{l) N/A (1) N/A(l) N/A (1) N/A(l)

Kr-87 N/A (1) N/A (1) N/A(l) N/A (1) N/A(l)

Kr-88 N/A{l) N/A (1) N/A(l) N/A (1) N/A{l)

Xe-133 N/A{l) N/A (1) N/A(l) N/A (1) N/A{l)

Xe-135 N/A(l) N/A (1) N/A(l) N/A (1) N/A{l)

Xe-135m N/A(l) N/A (1) N/A(l) N/A(l) N/A(l)

Xe-138 N/A(l) N/A (1) N/A(l) N/A(l) N/A(l)

Ar-41 N/A(l) N/A (1) N/A(l) N/A(l) N/A(l)

Total for Period N/A{l) N/A(l) N/A(l) N/A(l) N/A(l)

2. IODINES: Curies 1-131 N/A{l) N/A (1) N/A(l) N/A(l) N/A(l) 1-133 N/A{l) N/A(l) N/A(l) N/A(l) N/A(l) 1-135 N/A(l) N/A(l) N/A(l) N/A(l) N/A (1)

Total for Period N/A(l) N/A(l) N/A(l) N/A(l) N/A(l)

3. PARTICULATES WITH HALF-LIVES> 8 DAYS (2): Curies Cr-51 N/A(l) N/A(l) N/A(l) N/A(l) N/A(l)

Mn-54 N/A(l) N/A(l) N/A(l) N/A{l) N/A(l)

Fe-55 N/A(l) N/A{l) N/A{l) N/A (1) N/A{l)

Fe-59 N/A(l) N/A{l) N/A{l) N/A (1) N/A{l)

Co-58 N/A (1) N/A (1) N/A(l) N/A (1) N/A{l)

Co-60 N/A(l) N/A (1) N/A(l) N/A (1) N/A(l)

Ni-63 N/A (1) N/A (1) N/A(l) N/A(l) N/A(l)

Zn-65 N/A (1) N/A(l) N/A(l) N/A(l) N/A(l)

Sr-89 N/A{l) N/A(l) N/A(l) N/A(l) N/A(l)

Sr-90 N/A(l) N/A(l) N/A(l) N/A(l) N/A{l)

Zr/Nb-95{3) N/A{l) N/A(l) N/A{l) N/A (1) N/A(l)

Mo-99 N/A(l) N/A (1) N/A(l) N/A (1) N/A(l)

Ag-ll0m N/A(l) N/A(l) N/A(l) N/A(l) N/A (1)

Cs-134 N/A (1) N/A(l) N/A(l) N/A(l) N/A (1)

Cs-137 N/A (1) N/A(l) N/A(l) N/A(l) N/A(l)

Ba/La -140(3) N/A(l) N/A(l) N/A(l) N/A (1) N/A(l)

Ce-141 N/A{l) N/A{l) N/A(l) N/A (1) N/A(l)

Ce-144 N/A{l) N/A (1) N/A(l) N/A (1) N/A(l)

Total for Period N/A(l) N/A (1) N/A(l) N/A (1) N/A(l)

4. CARBON - 14: Curies C-14 N/A(l) N/A (1) N/A (1) N/A(l) N/A (1)
5. TRITIUM: Curies H-3 N/A (1) N/A(l) N/A(l) N/A {l) N/A(l)
6. GROSS ALPHA: Curies Gross Alpha N/A(l) N/A (1) N/A(l) N/A (1) N/A(l)

(1) Quad Cities performed no Gaseous Batch Releases in 2021 (2) Includes La-140 and Mo-99 per the ODCM (3) Equilibrium assumed, i.e., value for each nuclide is1/2 of total 3 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Effluent & Waste Disposable Summary Gaseous Effluents Release Point Reactor Vent (Mixed Mode) Continuous Mode Period: January - December 2021 Unit: 1 & 2 Continuous Mode Nuclides Released Jan - Mar 2021 Apr-Jun 2021 Jul - Sep 2021 Oct - Dec 2021 Total

1. FISSION AND ACTIVATION GASES: Curies Kr-85 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Kr-SSm <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Kr-87 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Kr-88 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Xe-133 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Xe-135 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Xe-135m <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Xe-138 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Ar-41 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Total for Period <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

2. IODINES: Curies 1-131 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1) 1-133 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1) 1-135 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Total for Period <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

3. PARTICULATES WITH HALF-LIVES> 8 DAYS (2): Curies Cr-51 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Mn-54 1.lSE-04 <LLD (1) 1.07E-0S <LLD 1.26E-04 Fe-55 2.63E-04 <LLD (1) <LLD (1) <LLD (1) 2.63E-04 Fe-59 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Co-58 S.96E-06 <LLD (1) <LLD (1) <LLD (1) S.96E-06 Co-60 4.09E-04 1.38E-04 6.95E-05 2.18E-0S 6.38E-04 Ni-63 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Zn-65 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Sr-89 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Sr-90 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Zr/Nb-95(3) <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Mo-99 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Ag-ll0m <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Cs-134 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Cs-137 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Ba/La-140(3) <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Ce-141 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Ce-144 <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

Total for Period 7.93E-04 l.38E-04 8.02E-0S 2.18E-05 1.03E-03

4. CARBON - 14: Curies C-14 1.98E-01 2.26E-01 2.28E-01 2.22E-01 8.74E-01
5. TRITIUM: Curies H-3 3.41E+00 2.08E+00 2.47E+00 2.14E+00 1.0lE+0l
6. GROSS ALPHA: Curies Gross Alpha <LLD (1) <LLD (1) <LLD (1) <LLD (1) <LLD (1)

(1) Gaseous LLDs reported on page 9 of 78 (2) Includes La-140 and Mo-99 per the ODCM (3) Equilibrium assumed, i.e., value for each nuclide is1/2 of total 4of78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Effluent & Waste Disposable Summary Gaseous Effluents Release Point Reactor Vent (Mixed Mode) Batch Mode Period: January - December 2021 Unit: 1 & 2 Batch Mode 111 Nuclides Released Jan - Mar 2021 Apr-Jun 2021 Jul - Sep 2021 Oct - Dec 2021 Total

1. FISSION AND ACTIVATION GASES: Curies Kr-85 N/A (1) N/A (1) N/A (1) N/A(l) N/A(l)

Kr-85m N/A (1) N/A (1) N/A (1) N/A(l) N/A(l)

Kr-87 N/A {l) N/A(l) N/A(l) N/A(l) N/A(l)

Kr-88 N/A{l) N/A (1) N/A (1) N/A(l) N/A(l)

Xe-133 N/A {l) N/A (1) N/A(l) N/A(l) N/A(l)

Xe-135 N/A (1) N/A (1) N/A (1) N/A(l) N/A(l)

Xe-135m N/A{l) N/A(l) N/A (1) N/A(l) N/A(l)

Xe-138 N/A(l) N/A(l) N/A (1) N/A(l) N/A(l)

Ar-41 N/A (1) N/A(l) N/A(l) N/A(l) N/A(l)

Total for Period N/A (1) N/A(l) N/A(l) N/A(l) N/A (1)

2. IODINES: Curies 1-131 N/A (1) N/A(l) N/A (1) N/A(l) N/A (1) 1-133 N/A (1) N/A(l) N/A(l) N/A(l) N/A (1) 1-135 N/A (1) N/A(l) N/A (1) N/A(l) N/A (1)

Total for Period N/A (1) N/A(l) N/A(l) N/A(l) N/A (1)

3. PARTICULATES WITH HALF-LIVES> 8 DAYS 121: Curies Cr-51 N/A(l) N/A(l) N/A(l) N/A (1) N/A(l)

Mn-54 N/A(l) N/A(l) N/A (1) N/A (1) N/A (1)

Fe-55 N/A(l) N/A(l) N/A (1) N/A(l) N/A(l)

Fe-59 N/A(l) N/A(l) N/A (1) N/A(l) N/A(l)

Co-58 N/A(l) N/A(l) N/A (1) N/A(l) N/A(l)

Co-60 N/A (1) N/A(l) N/A(l) N/A(l) N/A(l)

Ni-63 N/A(l) N/A(l) N/A (1) N/A(l) N/A(l)

Zn-65 N/A (1) N/A(l) N/A (1) N/A(l) N/A(l)

Sr-89 N/A (1) N/A(l) N/A(l) N/A(l) N/A (1)

Sr-90 N/A (1) N/A(l) N/A(l) N/A(l) N/A (1)

Zr/Nb-951 31 N/A (1) N/A (1) N/A (1) N/A (1) N/A (1)

Mo-99 N/A(l) N/A (1) N/A(l) N/A (1) N/A(l)

Ag-ll0m N/A (1) N/A(l) N/A (1) N/A(l) N/A(l)

Cs-134 N/A (1) N/A(l) N/A (1) N/A(l) N/A(l)

Cs-137 N/A (1) N/A(l) N/A (1) N/A(l) N/A(l)

Ba/La-140131 N/A (1) N/A(l) N/A(l) N/A(l) N/A(l)

Ce-141 N/A (1) N/A(l) N/A(l) N/A (1) N/A (1)

Ce-144 N/A (1) N/A(l) N/A (1) N/A (1) N/A (1)

Total for Period N/A (1) N/A(l) N/A (1) N/A(l) N/A(l)

4. CARBON - 14: Curies C-14 N/A(l) N/A(l) N/A (1) N/A(l) N/A(l)
5. TRITIUM: Curies H-3 N/A (1) N/A(l) N/A (1) N/A(l) N/A(l)
6. GROSS ALPHA: Curies Gross Alpha N/A (1) N/A(l) N/A (1) N/A (1) N/A (1)

(1) Quad Cities Station performed no Gaseous Batch Releases in 2021 (2) Includes La-140 and Mo-99 per the ODCM (3) Equilibrium assumed, i.e., value for each nuclide is1/2 of total 5 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Effluent & Waste Disposable Summary Liquid Effluents - Summation of all Releases Period: January - December 2021 Unit: 1 &2 Est. Total A. Fission & Activation Products Unit Quarter 1 Quarter 2 Quarter 3 Quarter4 Total Error%

1. Total Release (not including Tritium, Ci 2.59E-03 4.SSE-08 (3) 4.84E-04 <LLD (2) 3.07E-03 4.8 gases & alpha)
2. Average diluted concentration

µCi/ml 1.04E-11 1.0SE-16 1.12E-12 <LLD (2) during period

3. Percent of acceptable limit 111 WB 3.16E-03 4.44E-10 6.8SE-04 0.00E+00 Organ l.S0E-03 2.32E-09 3.26E-04 0.00E+00
4. Maximum diluted concentration

µCi/ml 7.69E-10 3.63E-12 8.72E-11 N/A during batch discharges B. Tritium

1. Total Release Ci 1.93E+00 7.83E-01 8.94E-01 4.66E-02 3.6SE+o0 I 4.1 I
2. Average diluted concentration

µCi/ml 7.78E-09 1.80E-09 l.82E-09 1.28E-10 during period

3. Percent of acceptable limit:  %

2.59E-04 6.00E-05 6.07E-05 4.27E-06 3.00E-03 uCi/ml C. Dissolved & Entrained Noble Gases

1. Total Release Ci 1.58E-04 <LLD (2) <LLD (2) <LLD {2} 1.58E-04 I 4.8 I
2. Average diluted concentration <LLD (2) <LLD {2} <LLD (2)

µCi/ml 6.37E-13 during period

3. Percent of acceptable limit:  % <LLD (2) <LLD (2) <LLD (2) 3.19E-07 2.00E-04 uCi/ml D. Gross Alpha Activity
1. Total Release Ci <LLD (2) <LLD (2) <LLD (2) <LLD (2) <LLD (2) 14.7 E. Volume of Waste Released (prior to Liters 3.49E+06 1.96E+07 2.15E+07 1.71E+07 6.17E+07 dilution)

F. Volume of Dilution Water Used Liters 2.48E+ll 4.35E+ll 4.92E+ll 3.65E+ll 1.54E+~2 During Period (1) Whole body/organ dose (ODCM)

(2) Liquid LLDs reported on page 10 of 78 (3) Includes Co-60 activity from FRAC tank leak. See page 18 of 78 for discussion 6 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Effluent & Waste Disposable Summary Liquid Effluents Release Point Mississippi River Continuous Mode Period: January - December 2021 Unit: 1 & 2 Continuous Mode Nuclides Released Jan- Mar 2021 Apr-Jun 2021 Jul - Sep 2021 Oct- Dec 2021 Total

1. FISSION AND ACTIVATION PRODUCTS: Curies Cr-51 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Mn-54 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Fe-55 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Fe-59 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Co-58 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Co-60 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Ni-63 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Zn-GS < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Sr-89 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Sr-90 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Zr/Nb-95 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Mo-99 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Ag-110m < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Cs-134 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Cs-137 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Ba/La-140 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Ce-141 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Ce-144 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Total for Period < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

2. DISSOLVED AND ENTRAINED NOBLE GASES: Curies Xe-133 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Xe-135 < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

Total for Period < LLD (1) < LLD (1) < LLD (1) < LLD (1) < LLD (1)

3. TRITIUM: Curies H-3 (2) 6.91E-02 7.82E-01 1.25E-01 4.GGE-02 1.02E+OO Total for Period 6.91E-02 7.82E-01 1.25E-01 4.GGE-02 1.02E+OO (1) Liquid LLDs reported on page 10 of 78 (2) Contains H-3 curies released as part of CCST leak remediation, see page 17 of 78 for discussion 7 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Effluent & Waste Disposable Summary Liquid Effluents Release Point Mississippi River Batch Mode River Discharge Tank Period: January - December 2021 Unit: 1 & 2 Batch Mode 121 Nuclides Released Jan- Mar 2021 Apr -Jun 2021 Jul -Sep 2021 Oct- Dec 2021 Total

1. FISSION AND ACTIVATION PRODUCTS: Curies Cr-51 < LLD (1) N/A (2) < LLD (1) N/A (2) < LLD (1)

Mn-54 < LLD (1) N/A (2) < LLD (1) N/A (2) < LLD (1)

Fe-55 9.19E-04 N/A (2) < LLD (1) N/A (2) 9.19E-04 Co-58 < LLD (1) N/A(2) < LLD (1) N/A(2) < LLD (1)

Co-60 1.23E-03 4.SBE-08 (3) 2.71E-04 N/A(2) 1.S0E-03 Ni-63 < LLD (1) N/A(2) < LLD (1) N/A (2) < LLD (1)

Sb-124 < LLD (1) N/A(2) < LLD (1) N/A (2) < LLD (1)

Sb-125 < LLD (1) N/A (2) < LLD (1) N/A (2) < LLD (1)

Zn-65 < LLD (1) N/A (2) < LLD (1) N/A (2) < LLD (1)

Sr-89 < LLD (1) N/A (2) < LLD (1) N/A (2) < LLD (1)

Sr-90 < LLD (1) N/A (2) < LLD (1) N/A (2) < LLD (1)

Zr/Nb-95 < LLD (1) N/A(2) < LLD (1) N/A(2) < LLD (1)

Mo-99 < LLD (1) N/A(2) < LLD (1) N/A (2) < LLD (1)

Ag-ll0m < LLD (1) N/A(2) < LLD (1) N/A (2) < LLD (1)

Cs-134 < LLD (1) N/A(2) < LLD (1) N/A (2) < LLD (1)

Cs-137 4.36E-04 N/A (2) 2.13E-04 N/A (2) 6.49E-04 Ba/La-140 < LLD (1) N/A (2) < LLD (1) N/A (2) < LLD (1)

Ce-141 < LLD (1) N/A (2) < LLD (1) N/A (2) < LLD (1)

Ce-144 < LLD (1) N/A (2) < LLD (1) N/A (2) < LLD (1)

Total for Period 2.59E-03 4.SBE-08 (3) 4.84E-04 N/A (2) 3.07E-03

2. DISSOLVED AND ENTRAINED NOBLE GASES: Curies Xe-133 1.SBE-04 N/A (2) < LLD (1) N/A (2) 1.SBE-04 Xe-135 < LLD (1) N/A (2) < LLD (1) N/A (2) < LLD (1)

Total for Period 1.SBE-04 N/A(2) < LLD (1) N/A(2) 1.SBE-04

3. TRITIUM: Curies H-3 1.86E+00 5.20E-04 (3) 7.69E-01 N/A (2) 2.63E+00 Total for Period 1.86E+00 S.20E-04 (3) 7.69E-01 N/A (2) 2.63E+00 (1) liquid LLDs reported on page 10 of 78 (2) No River Discharges performed in Q2 or Q4 (3) H-3 curies released from FRAC tank leak, see page 18 of 78 for discussion 8 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Effluent & Waste Disposable Summary GASEOUS EFFLUENT LLD'S (Most restrictive)

Continuous Mode NUCLIDE LOWER LIMIT OF DETECTION (LLD'S) UNIT LLD VALUE ODCM REQUIRED LLD

1. Fission Gases Ar-41 µCi/cc l.96E-08 NONE Kr-85 µCi/cc 3.35E-06 NONE Kr-85m µCi/cc 1.28E-08 NONE Kr-87 µCi/cc 5.32E-08 l.00E-04 Kr-88 µCi/cc 5.37E-08 l.00E-04 Xe-133 µCi/cc 4.45E-08 l.00E-04 Xe-133m µCi/cc 8.53E-08 1.00E-04 Xe-135 µCi/cc l.18E-08 l.00E-04 Xe-135m µCi/cc 6.64E-07 NONE Xe-138 µCi/cc 3.94E-06 l.00E-04 NUCLIDE LOWER LIMIT OF DETECTION (LLD's) UNIT LLD VALUE ODCM REQUIRED LLD*
2. Iodines 1-131 µCi/cc 4.87E-13 l.00E-12 1-133 µCi/cc 4.57E-12 l.00E-10 1-135 µCi/cc 6.19E-09 NONE NUCLIDE LOWER LIMIT OF DETECTION (LLD's) UNIT LLD VALUE ODCM REQUIRED LLD*
3. Particulates, Tritium, Gross Alpha H-3 µCi/cc 1.16E-11 l.00E-06 Cr-51 µCi/cc 2.21E-12 NONE Mn-54 µCi/cc 4.66E-13 l.00E-11 Fe-55 µCi/cc 2.32e-12 NONE Fe-59 µCi/cc l.54E-12 l.00E-11 Co-58 µCi/cc 6.93E-13 l.00E-11 Co-60 µCi/cc 6.66E-13 l.00E-11 Zn-65 µCi/cc l.57E-12 l.00E-11 Ni-63 µCi/cc 1.13e-13 NONE Sr-89 µCi/cc 2.91e-13 l.00E-11 Sr-90 µCi/cc 4.59e-14 l.00E-11 Nb-95 µCi/cc 4.36E-13 NONE Zr-95 µCi/cc 8.35E-13 NONE Mo-99 µCi/cc 6.97E-12 l.OOE-11 Ag-llOm µCi/cc 2.54E-13 NONE Cs-134 µCi/cc 4.88E-13 l.00E-11 Cs-137 µCi/cc 4.19E-13 l.00E-11 Ba-140 µCi/cc 2.82E-12 NONE La-140 µCi/cc l.59E-12 NONE Ce-141 µCi/cc S.68E-13 l.00E-11 Ce-144 µCi/cc 2.S0E-12 l.00E-11 Gross Alpha µCi/cc 3.4Se-14 l.00E-11
  • ODCM REC LLD's for weekly samples. These may be increased by a factor of 10 for daily samples 9 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Effluent & Waste Disposable Summary LIQUID EFFLUENT LLD'S (Most restrictive)

NUCLIDE LOWER LIMITS OF DETECTION (LLD's) UNIT LLD VALUE ODCM REQUIRED LLD

1. Liquids H-3 µCi/ml 1.2SE-06 1.00E-05 Ar-41 µCi/ml 1.07E-07 NONE Kr-85 µCi/ml 1.SlE-05 NONE Kr-85m µCi/ml 5.73E-08 NONE Kr-87 µCi/ml 2.09E-07 1.00E-05 Kr-88 µCi/ml 2.08E-07 1.00E-05 Xe-133 µCi/ml 1.69E-07 1.00E-05 Xe-133m µCi/ml 4.23E-07 1.00E-05 Xe-135 µCi/ml 5.64E-08 1.00E-05 Xe-135m µCi/ml 1.91E-06 NONE Xe-138 µCi/ml 6.83E-06 1.00E-05 Cr-51 µCi/ml 3.91E-07 NONE Mn-54 µCi/ml 5.45E-08 5.00E-07 Fe-55 µCi/ml 9.84E-07 1.00E-06 Fe-59 µCi/ml 8.95E-08 5.00E-07 Co-58 µCi/ml 5.74E-08 5.00E-07 Co-60 µCi/ml 8.29E-08 5.00E-07 Ni-63 µCi/ml 9.23E-07 NONE Zn-65 µCi/ml 1.02E-07 5.00E-07 Sb-124 µCi/ml 5.75E-08 NONE Sb-125 µCi/ml 1.llE-07 NONE Sr-89 µCi/ml 4.G0E-08 5.00E-08 Sr-90 µCi/ml 1.71E-08 5.00E-08 Mo-99 µCi/ml 4.25E-07 5.00E-07 Ag-110m µCi/ml 6.22E-08 NONE 1-131 µCi/ml 4.37E-08 1.00E-06 Cs-134 µCi/ml 5.43E-08 5.00E-07 Ce-137 µCi/ml 7.62E-08 5.00E-07 Ce-141 µCi/ml 7.23E-08 5.00E-07 Ce-144 µCi/ml 3.85E-07 5.00E-06 Gross Alpha µCi/ml 6.llE-08 1.00E-07 10 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Discussion of Radiation and Radioactivity 111 Radiation and Radioactivity All matter is made of atoms. An atom is the smallest part into which matter can be broken down and still maintain all its chemical properties. Nuclear radiation is energy, in the form of waves or particles that is given off by unstable, radioactive atoms. Radioactive material exists naturally and has always been a part of our environment. The earth's crust, for example, contains radioactive uranium, radium, thorium, and potassium.

Some radioactivity is a result of nuclear weapons testing. Examples of radioactive fallout that is normally present in environmental samples are Cesium-137 and Strontium-90. Some examples of radioactive materials released from a nuclear power plant are Cesium-137, lodine-131, Strontium-90, and Cobalt-60. Radiation dose is measured in units of millirem; much like temperature is measured in degrees. A millirem is a measure of the biological effect of the energy deposited in tissue. The natural and man-made radiation dose received in one year by the average American is 300 to 400 mrem (References 2, 3, 4 in Table - 1 below). Radioactivity is measured in curies. A curie is that amount of radioactive material needed to produce 37,000,000,000 nuclear disintegrations per second.

Sources of Radiation As mentioned previously, naturally occurring radioactivity has always been a part of our environment. Table - 1 shows the sources and doses of radiation from natural and man-made sources.

Table-1 Radiation Sources and Corresponding Doses 111 NATURAL MAN-MADE Radiation Dose Radiation Dose Source Source (mrem/year) (mrem/year)

Internal, inhalation <21 228 Medical !3) 300 External, space 33 Consumer <4 l 13 Internal, ingestion 29 Industrial <5 l 0.3 External, terrestrial 21 Occupational 0.5 Weapons Fallout <1 Nuclear Power Plants <1 Approximate Total 311 Approximate Total 314 (1) Information from NCRP Reports 160 and 94 (2) Primarily from airborne radon and its radioactive progeny (3) Includes CT (147 mrem), nuclear medicine (77 mrem), interventional fluoroscopy (43 mrem) and conventional radiography and fluoroscopy (33 mrem)

(4) Primarily from cigarette smoking (4.6 mrem), commercial air travel (3.4 mrem), building materials (3.5 mrem), and mining and agriculture (0.8 mrem)

(5) Industrial, security, medical, educational and research (1) This section adapted with permission of Ken Sejkora 11 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Cosmic radiation from the sun and outer space penetrates the earth's atmosphere and continuously interacts with us via rays and charged particles. Some of this cosmic radiation interacts with gases and particles in the atmosphere, making them radioactive in turn. These radioactive byproducts from cosmic ray interaction are referred to as cosmogenic radionuclides. Isotopes such as Beryllium-7 and Carbon-14 are formed in this way.

Exposure to cosmic and cosmogenic sources of radioactivity results in about 33 mrem of radiation does per year.

Additionally, natural radioactivity is in our body and in the food we eat (about 29 mrem/year), the ground we walk on (about 21 mrem/year) and the air we breathe (about 228 mrem/year). The majority of a person's annual dose results from exposure to radon and thoron in the air we breathe. These gases and their radioactive decay products arise from the decay of naturally occurring uranium, thoron and radium in the soil and building products such as brick, stone, and concrete. Radon and thoron levels vary greatly with location, primarily due to changes in the concentration of uranium and thorium in the soil. Residents at some locations in Colorado, New York, Pennsylvania, and New Jersey have a higher annual dose as a result of higher levels of radon/thoron gases in these areas. In total, these various sources ot"naturally-occurring radiation and radioactivity contribute to a total does of about 311 mrem per year.

In addition to natural radiation, we are normally exposed to radiation from a number of man-made sources. The single largest doses from man-made sources result from the therapeutic and diagnostic applications of x-rays and radiopharmaceuticals. The annual dose to an individual in the U.S. from medical and dental exposure is about 300 mrem. Consumer products, such as televisions and smoke detectors, contribute about 13 mrem/year.

Much smaller does result from weapons fallout (less than 1 mrem/year) and nuclear power plants. Typically, the average person in the United States receives about 314 mrem per year from man-made sources.

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Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Facility: Quad Cities Nuclear Power Station (QCNPS) January-December 2021 Licensee: Exelon Generation Company

1. Regulatory Limits
a. For Noble Gases Dose rate (per site)
1. Less than 500 mrem/year to the whole body
2. Less than 3000 mrem/year to the skin Dose Gamma Radiation (per unit)
1. Less than or equal to 5 mrad/quarter
2. Less than or equal to 10 mrad/year Beta Radiation (per unit)
1. Less than or equal to 10 mrad/quarter
2. Less than or equal to 20 mrad/year b,c. For lodine-131, lodine-133, Carbon-14, and for all radionuclides in particulate form with half-lives greater than 8 days Dose Rate
1. Less than 1500 mrem/year (per site)

Dose (per unit)

1. Less than or equal to 7.5 mrem/quarter
2. Less than or equal to 15 mrem/year
d. For Liquid (per unit)
1. Less than or equal to 1.5 mrem to the whole body during any calendar quarter
2. Less than or equal to 5 mrem to any organ during any calendar quarter
3. Less than or equal to 3 mrem to the whole body during any calendar year
4. Less than or equal to 10 mrem to any organ during any calendar year 13 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report

2. Maximum Permissible Concentration a,b,c. For Fission and activation gases, iodine and particulates with half-lives greater than 8 days, allowable release limits are calculated by solving equations 2.0-5 and 2.0-6 from the Offsite Dose Calculation Manual Part II Chapter 2. The alarm setpoints are conservatively set at approximately 10% of the 10CFR20 limit.
d. For liquid effluents, with the exception of tritium and dissolved and entrained noble gases, allowable release limits are calculated by solving equations 2.0-1 and 2.0-2 from the Offsite Does Calculation Manual Part II Chapter 2. The MPC values used for the monitors were as follows:

Radwaste discharge 1.54E-06 µCi/ml Service water 1.00E-05 µCi/ml The allowable release limits for tritium and dissolved and entrained noble gases are as follows:

Tritium: 3.00E-03 µCi/ml taken from Reg Guide 1.21 Dissolved and Entrained Noble Gases: 2.00E-04 µCi/ml taken from NUREG 1302

3. Average Energy The average gamma energy used to calculate the alarm setpoints for the noble gas monitors are as follows:

9.41E-01 MeV for Quarter 1 9.69E-01 MeV for Quarter 2

9. 72E-01 MeV for Quarter 3 9.73E-01 MeV for Quarter 4
4. Measurements for Approximations of Total Radioactivity
a. Fission and Activation Gases
b. Iodines
c. Particulates a,b,c. The main chimney and reactor building ventilation exhaust systems are continually monitored for iodines and particulates. These samples are pulled every 7 days and analyzed by gamma isotopic. The particulate papers are composited every 31 days and sent to a vendor for Sr-89/90, Fe-55, Ni-63, and gross alpha analysis. Noble gas grab samples are pulled and analyzed by gamma isotopic weekly. Tritium samples are pulled and analyzed every month.

The Sr-89/90, Fe-55, Ni-63 and gross alpha curies released values reported are actual. On a real time basis, the portion of the "percent of applicable limit" for these contributors is reported based on projections using the previous available data. The actual results are obtained by editing the ODCM software inputs when the vendor results become available. Therefore, the "percent of applicable limits" in this report are actual.

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Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report The continuous chart recorders for the monitors on the release points are reviewed for spikes and the activity released is calculated. An additional calculated activity for noble gases is added to the main chimney or reactor building release each month if applicable. This calculation is done because most of the grab samples show less than the lower limit of detection due to the low amount of activity and the large dilution flow at the sample point. The calculation takes into account the normal offgas train and the gland steam contribution to the release.

The average flow at the release points is used to calculate the curies released.

There are no ground level releases from QCNPS. All monitored releases are considered either elevated or mixed mode.

d. Carbon-14 Quad Cities has estimated its Carbon-14 generation and release in accordance with EPRI Technical Report 1021106, "Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents".

The Quad Cities estimate of 2.84E+0l Ci of Carbon-14 and the resultant 2.84E+0l Ci 14 CO2 released is based upon a normalized Carbon-14 production rate of 5.lOE+00 Ci/GWTh-yr, a gaseous release fraction of 1.00, a Carbon-14 CO2 fraction of 1.00, a reactor power rating of 2957 MWTh/unit for 2 units, and a calculated Effective Full Power days based upon Total Core Therms data. The maximum expected annual dose contribution from Carbon -14 has been calculated to be 2.0SE-01 mrem/year organ dose and 4.lSE-02 mrem/year total body dose. This was obtained using maximum gross thermal capacity maintained for 365 days for both units.

e. Liquid Effluents River Discharge Tanks, when performed, are analyzed prior to discharge by gamma isotopic. A composite representative portion of this sample is saved. This is composited with other discharges (if applicable), that occurred every 31 days and is analyzed for tritium and gross alpha. The monthly composites are composited quarterly and sent to a vendor for Sr-89/90, Fe-ss, and Ni-63 analyses. The discharge bay is sampled every 31 days and analyzed for gamma by isotopic, for tritium and for gross alpha. It is sampled quarterly and sent to a vendor for Sr-89/90, Fe-55, and Ni-63 analysis. On a real-time basis, the portion of the "percent of applicable limit" for these contributors is based on projections using scaling factors.

The actual results are obtained by editing the ODCM software inputs when the vendor results become available. Therefore, the "percent of applicable limits" in this report are actual. The tank volumes and activities are used to calculate the curies released from the River Discharge Tank. The total water released during the quarter and the activity is used to calculate the diluted activity released at the discharge bay, from batch discharges.

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f. Estimated Total Error Percent The estimated total error percents were calculated by taking the square root of the sum of the squares of errors for sampling and measurement parameters.
g. Less than the Lower Limit of detection (<LLD)

Samples are analyzed such that the Technical Specification LLD requirements are met. When a nuclide is not detected during the quarter, then <LLD is reported. The most conservative LLD's used for counting effluent samples are included in this report.

5. Batch Releases
a. Liquid (Abnormal)
1. Number of releases: 4 releases (1 release)
2. Total Time: 3439 minutes (5 minutes)
3. Maximum Time: 953 minutes (5 minutes)
4. Average Time: 860 minutes (5 minutes)
5. Minimum Time: 775 minutes (5 minutes)
6. Average Stream Flow: 62.1 gallons per minute (SO gallons per minute)
b. Gaseous
1. NONE 16 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report

6. Abnormal Releases
a. Liquid
1. On March 10, 2021, groundwater sample results from well QC-GP-12 showed a tritium concentration of 2.8 million pCi/L. Sample results from nearby well QC-GP-16 showed a tritium concentration of 1.9 million pCi/L. QC-GP-12 and QC-GP-16 are located in the Condensate Storage Tank and ancillary piping area. Five additional groundwater monitoring wells were installed (Stick wells #1, #2, #4, and #5, and groundwater monitoring well MW-QC-117S) for assistance with leak detection location and groundwater monitoring. A new remediation well was installed (MW-R-2D2) and remediation commenced on 3/15/21.

On March 10, 2021, the station contacted the Illinois Environmental Protection Agency (IEPA) and Illinois Emergency Management Agency (IEMA) to report a release of a radionuclide pursuant to 35 Ill. Adm. Code 1010.202. The station also notified the Nuclear Regulatory Commission (NRC) of the report to state agencies to satisfy 10CFR50. 72(b)(2)(xi),

notification of the NRC for any event related to the health and safety of the public for which a notification to other government agencies has been or will be made (EN #55132).

As part of the investigation to identify the source, the "B" Condensate Storage Tank was drained and inspected. During the inspection a hole measuring 1/4" x 5/16" (approximately the width of a pencil) was discovered on the tank floor which allowed water to seep into the surrounding groundwater. The hole was repaired prior to returning to service. In October 2021 the "B" Condensate Storage Tank floor was restored to original tank floor thickness and "A" Condensate Storage Tank floor was returned to original tank floor thickness in January 2022.

On March 12, 2021, an extraction well (MW-R-2D2) was installed near the Contaminated Condensate Storage Tank area to assist in remediating the tritium activity in groundwater.

The extraction well began pumping groundwater on March 15, 2021, with effluent routed to Quad Cities Station's permitted outfall 001/002. Between March 15, 2021, and December 20, 2021, approximately 14.9 million gallons of groundwater was pumped from the vicinity of the Condensate Storage Tank and ancillary piping area for remediation purposes.

Remediation out of MW-R-2D2 is on-going. Prior to remediation QC-GP-12 tritium concentration was 3.2 million pCi/L. As of December 9, 2021, QC-GP-12 tritium concentration was 57,400pCi/L.

Upon initiation of routing to the discharge bay, samples were collected from each well on a daily basis to monitor for tritium concentration, gamma spectroscopy, and to create monthly composite samples to be analyzed for gross alpha, Fe-55, Ni-63, Sr-89, and Sr-

90. LLDs and sampling requirements for this monitored abnormal release are identical to the requirements listed in the ODCM for routine liquid effluent analysis. Starting the week of August 9th 2021, due to consistently decreasing concentrations of tritium identified in the samples, sample collection was changed to a frequency of once per week. No other changes were made to the previously identified sampling and analysis frequency.

Samples were also obtained at the Discharge Bay outfall and analyzed for the same radionuclides and at the same frequency as the well samples. No samples of the discharge bay outfall showed detectable activity.

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Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report During the period that the wells were routed to the discharge bay, only tritium was detected in the well discharge at levels above the required limit of detection. A total of 3.62E+00 Ci of tritium was released to the Mississippi River via this abnormal release. The associated dose impact to members of the public from this abnormal release was calculated to be 2.GSE-07 mRem to the Child/Liver dose pathway. The total body dose associated with this abnormal release was calculated to be 2.GSE-07 mRem to the Child Total Body. The associated curies and doses due to this release are included in the Summation of All Releases Table (page 6 of this report), Mississippi River Continuous Mode (page 7 ofthis report) and Radiological Impact on Man (page 18 of this report).

2. During remediation efforts related to the CCST leak, described above, temporary FRAC tanks were used to support emptying of the B CCST for repair. On 14APR2021, one of the tanks was being moved from a satellite RCA to Trackway 1 to support internal decontamination prior to shipment. During the move, the tank drain isolation valve failed, resulting in approx. 10 gallons of fluid leaking onto an impermeable surface. Less than one gallon reached a site storm drain that routes rainwater to the discharge bay. Samples taken of the fluid showed concentrations of 2.42E-07 uCi/mL Co-60 and 2.75E-03 uCi/mL H-3 (tritium).

For conservatism sake, SO gallons was assumed to reach the storm drain. This results in a total of 4.58E-02 uCi of Co-60 and S.20E+02 uCi of H-3 reaching the discharge bay. Dose associated with this Abnormal Batch release was calculated to be 2.32E-10 mRem to the Adult/Gilli dose receptor pathway. The total body dose associated with this abnormal release was calculated to be 1.76E-10 mRem to the Child Total Body. The associated curies and doses due to this release are included in the Summation of All Releases Table (page 6 of this report), Mississippi River Batch Mode (page 8 ofthis report) and Radiological Impact on Man (page 18 of this report).

b. Gaseous
1. NONE
7. Radiological Impact on Man
a. Liquid Dose to a Member of the Public for 2021 Total Body: 1.16E-04 mRem (Adult)

Organ: 1.84E-04 mRem (Teen/Liver)

b. Gaseous Dose to a Member of the Public for 2021 Total Body: 4.37E-02 mRem (Child)

Noble Gas Skin Dose: 1.lOE-03 mRem/year Organ (Particulate/lodine/C-14/Tritium): 2.0SE-01 mrem (Child/Bone)

The Quad Cities calculated annual doses from Carbon-14 releases have been calculated using the methodologies outlines in the ODCM. The resultant estimated releases of Carbon-14 resulted in a dose contribution of 2.0lE-0lmRem to organ dose (98.1%) and 4.02E-02 mrem to total body dose (92.0%).

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c. 40 CFR 190 Direct Radiation Dose to a Member of the Public for 2021 Total Body: 7.85E+00 mrem 3.14E+01% of 40CFR190 Limit of 25 mrem/year (Total Body)

Organ Dose: 2.05E-01 mrem Child/Bone 8.20E-01% of 40CFR190 Limit of 25 mrem/year (Organ Dose)

Thyroid Dose: 5.14E-02 mrem Infant/Thyroid 6.85E-02% of 40CFR190 Limit of 75 mrem/year (Thyroid Dose)

d. Total Body Doses to the Population and Average Doses to Individuals in the Population from All Receiving-Water-Related-Pathways:

Not applicable for QCNPS. Not required per Quad Cities ODCM.

e. Total Body Doses to the Population and Average Doses to Individuals in the Population from Gaseous effluents to a distance of 50 miles:

Not applicable for QCNPS. Not required per Quad Cities ODCM.

f. Doses From Liquid and Gaseous Effluent to Members of the Public Due to Their Activities Inside the Site Boundary for the Record Period:

Not applicable for QCNPS. Any member of the public that is onsite for a significant period will be issued a dosimeter.

g. Liquid and Gaseous Effluent Radiation Monitors and Instrumentation Unavailability for the Period Beyond the Requirements of the ODCM, Including Sampling Deviation:

There were no Liquid and Gaseous Effluent Radiation Monitors and Instrumentation Unavailability for the Period Beyond the Requirements of the ODCM, including Sampling Deviation for 2021.

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Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report 10CFR20.1301(a)(l) Compliance Assessment Quad Cities Station Unit One and Unit Two Assessment Period 01/01/2021-01/01/2022 10CFR20.1301{a)(1) Limit 100.00 mrem/year Quad Cities Unit 1 pt Quarter 2nd Quarter 3rd Quarter 4th Quarter Year Total  % of Limit TEDE (mrem) 7.75E-01 9.86E-01 1.0lE+00 1.0lE+00 3.78E+00 3.78 Quad Cities Unit 2 1st Quarter 2nd Quarter 3 rd Quarter 4 th Quarter Year Total  % of Limit TEDE (mrem) 1.0lE+0O 1.0lE+O0 1.0lE+00 1.03E+00 4.07E+00 4.07 Submitted by: ------+-UlbJ----------~=---/_a/P;) __ -+-----

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Anna Wilson 20 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Maximum Doses Resulting From Airborne Releases/Compliance Status Quad Cities Station - Unit One/Unit Two Unit One Unit Two 10 CFR 50 APP. I Unit One Unit Two Type of Dose Annual Annual Yearly Objective %ofAPP.I  % of APP. I Gamma Air (mrad) 1.l0E-04 1.l0E-04 10.0 1.l0E-03 1.lOE-03 Beta Air (mrad) S.25E-0S S.2SE-0S 20.0 2.63E-04 2.63E-04 Organ (mrem) 1.44E-01 1.44E-01 15.0 9.G0E-01 6.90E-01 Critical Person Child Child Critical Organ Bone Bone The calculation of the above doses was done by an independent contractor utilizing GASPAR, an NRC approved program. The calculation was done with current year meteorological data and equation multipliers outlined in Reg Guide 1.109 and NUREG 0133.

21 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Extremely Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 0 0 0 0 1 NNE 0 1 1 0 1 0 3 NE 0 2 2 0 0 0 4 ENE 0 0 4 0 0 0 4 E 0 0 2 0 0 0 2 ESE 0 0 5 0 0 0 5 SE 0 8 1 0 0 0 9 SSE 0 9 11 0 0 0 20 s 0 1 3 5 0 0 9 SSW 0 0 1 0 0 0 1 SW 0 0 0 0 0 0 0 WSW 0 1 3 0 0 0 4 w 0 0 5 1 0 0 6 WNW 0 0 1 5 0 0 6 NW 0 0 0 1 0 0 1 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 23 39 12 1 0 75 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 15 22 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Moderately Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 1 0 1 0 2 NE 0 0 1 0 0 0 1 ENE 0 1 0 0 0 0 1 E 0 2 0 0 0 0 2 ESE 0 1 1 0 0 0 2 SE 0 0 2 0 0 0 2 SSE 0 4 2 0 0 0 6 s 0 0 0 0 0 0 0 SSW 0 1 0 0 0 0 1 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 1 0 0 1 WNW 0 0 1 2 0 0 3 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 9 8 3 1 0 21 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 15 23 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Slightly Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 1 0 0 0 2 NNE 0 0 1 0 2 0 3 NE 0 2 1 0 0 0 3 ENE 0 0 1 0 0 0 1 E 0 0 0 0 0 0 0 ESE 0 3 1 0 0 0 4 SE 0 4 0 0 0 0 4 SSE 0 3 0 0 0 0 3 s 0 3 1 0 0 0 4 SSW 0 5 0 0 0 0 5 SW 0 0 1 0 0 0 1 WSW 0 1 0 0 0 0 1 w 0 1 3 1 0 0 5 WNW 0 0 6 7 0 0 13 NW 0 0 3 1 0 0 4 NNW 0 0 3 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 23 22 9 2 0 56 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 15 24 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stab ility Class - Neutral - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 12 39 57 2 0 0 110 NNE 7 17 22 19 2 0 67 NE 8 38 27 4 0 0 77 ENE 8 24 25 4 0 0 61 E 6 45 25 16 0 0 92 ESE 5 35 6 0 0 0 46 SE 7 16 1 0 0 0 24 SSE 8 24 5 1 0 0 38 s 5 12 5 0 0 0 22 SSW 4 15 11 0 0 0 30 SW 2 21 13 0 0 0 36 WSW 6 51 22 4 0 0 83 w 5 58 66 29 0 0 158 WNW 2 56 79 13 0 0 150 NW 10 61 22 1 0 0 94 NNW 9 58 46 0 0 0 113 Variable 0 0 0 0 0 0 0 Total 104 5 70 4 32 93 2 0 1201 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 15 25 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Slightly Stable - 196Ft-33Ft Delta-T (F}

Winds Measured at 33 Feet Wind Speed (in mph}

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 3 1 0 0 0 6 NNE 2 8 10 0 0 0 20 NE 6 12 1 0 0 0 19 ENE 3 3 1 0 0 0 7 E 9 26 10 0 0 0 45 ESE 10 18 11 0 0 0 39 SE 6 22 0 0 0 0 28 SSE 2 11 6 1 0 0 20 s 5 11 16 1 0 0 33 SSW 4 14 11 0 0 0 29 SW 9 21 10 0 0 0 40 WSW 11 21 9 0 0 0 41 w 9 50 9 0 0 0 68 WNW 15 20 1 0 0 0 36 NW 14 11 0 0 0 0 25 NNW 4 9 0 0 0 0 13 Variable 0 0 0 0 0 0 0 Total 111 260 96 2 0 0 4 69 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 15 26 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Moderately Stable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 1 1 0 0 0 4 NNE 1 1 0 0 0 0 2 NE 6 5 0 0 0 0 11 ENE 4 2 0 0 0 0 6 E 12 19 1 0 0 0 32 ESE 13 7 0 0 0 0 20 SE 8 9 0 0 0 0 17 SSE 5 16 0 0 0 0 21 s 4 5 0 0 0 0 9 SSW 3 1 0 0 0 0 4 SW 2 0 0 0 0 0 2 WSW 5 2 0 0 0 0 7 w 6 2 0 0 0 0 8 WNW 6 6 0 0 0 0 12 NW 5 2 0 0 0 0 7 NNW 1 2 0 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 83 80 2 0 0 0 165 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 15 27 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Extremely Stable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Directi o n 1-3 4-7 8-12 13-18 19-24 > 24 Total N 5 0 0 0 0 0 5 NNE 4 1 0 0 0 0 5 NE 8 0 0 0 0 0 8 ENE 3 0 0 0 0 0 3 E 13 13 0 0 0 0 26 ESE 17 24 0 0 0 0 41 SE 12 0 0 0 0 0 12 SSE 5 2 0 0 0 0 7 s 3 0 0 0 0 0 3 SSW 2 0 0 0 0 0 2 SW 4 0 0 0 0 0 4 WSW 4 0 0 0 0 0 4 w 11 0 0 0 0 0 11 WNW 4 0 0 0 0 0 4 NW 7 4 0 0 0 0 11 NNW 7 4 0 0 0 0 11 Variable 0 0 0 0 0 0 0 Total 109 48 0 0 0 0 157 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 15 28 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Extremely Unstable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 To tal N 0 0 0 0 0 0 0 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 0 0 0 1 0 0 1 SE 0 0 0 0 0 0 0 SSE 0 0 3 6 0 0 9 s 0 0 0 1 6 5 12 SSW 0 0 0 0 0 2 2 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 1 4 0 5 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 0 3 9 10 7 29 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 15 29 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Moderately Unstable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 1 0 0 1 NNE 0 0 0 2 0 0 2 NE 0 0 0 0 0 3 3 ENE 0 0 5 0 0 0 5 E 0 0 1 0 0 0 1 ESE 0 0 2 0 0 0 2 SE 0 0 1 1 0 0 2 SSE 0 0 5 1 0 0 6 s 0 1 1 2 0 2 6 SSW 0 0 0 0 0 1 1 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 2 0 0 2 WNW 0 0 0 4 2 0 6 NW 0 0 0 0 1 1 2 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 1 15 13 3 7 39 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 15 30 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Slightly Unstable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 2 0 0 4 NNE 0 0 0 4 0 0 4 NE 0 1 0 0 0 2 3 ENE 0 0 1 1 0 0 2 E 0 0 1 0 0 0 1 ESE 0 1 2 0 0 0 3 SE 0 3 0 3 3 0 9 SSE 0 0 1 1 0 0 2 s 0 0 0 2 1 1 4 SSW 0 0 0 1 0 0 1 SW 0 0 0 0 0 0 0 WSW 0 0 0 2 0 0 2 w 0 0 2 0 1 0 3 WNW 0 0 0 2 2 1 5 NW 0 0 1 5 7 2 15 NNW 0 0 1 2 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 5 11 25 14 6 61 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 4 Hours of missing stability measurements in all stability classes: 15 31 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Neutral - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 19 30 43 0 0 94 NNE 1 19 16 18 10 1 65 NE 1 12 7 16 12 13 61 ENE 4 21 12 14 5 2 58 E 2 16 12 12 9 2 53 ESE 0 7 11 21 11 0 50 SE 1 5 12 12 2 0 32 SSE 1 13 9 13 1 2 39 s 0 1 7 9 6 3 26 SSW 1 1 3 7 7 4 23 SW 0 10 10 18 4 0 42 WSW 1 6 12 14 6 1 40 w 1 8 39 33 29 8 118 WNW 1 9 36 42 37 11 136 NW 3 20 30 61 23 4 141 NNW 4 18 39 26 0 0 87 Variable 0 0 0 0 0 0 0 Total 23 185 285 359 162 51 1065 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 169 Hours of missing stability measurements in all stability classes: 15 32 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Slightly Stable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 8 4 0 0 16 NNE 1 6 11 2 0 0 20 NE 1 3 2 6 5 0 17 ENE 0 1 4 2 1 0 8 E 0 1 7 3 0 0 11 ESE 0 2 5 14 14 0 35 SE 1 2 13 20 6 0 42 SSE 3 2 7 14 4 0 30 s 1 0 4 6 6 11 28 SSW 0 4 2 7 16 6 35 SW 1 0 5 12 17 1 36 WSW 0 1 7 16 7 0 31 w 1 0 13 11 14 0 39 WNW 0 2 13 21 5 1 42 NW 0 2 15 9 0 0 26 NNW 1 1 9 4 0 0 15 Variable 0 0 0 0 0 0 0 Total 10 31 125 151 95 19 431 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 32 Hours of missing stability measurements in all stability classes: 15 33 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Moderately Stable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 6 4 7 0 0 20 NNE 2 3 5 0 0 0 10 NE 2 2 6 1 2 0 13 ENE 1 1 2 0 0 0 4 E 2 2 5 1 0 0 10 ESE 1 0 2 11 1 0 15 SE 0 0 5 25 2 0 32 SSE 0 2 4 12 8 0 26 s 0 2 6 12 7 0 27 SSW 1 0 5 8 2 0 16 SW 0 0 1 1 1 0 3 WSW 1 0 0 0 0 0 1 w 0 0 6 1 0 0 7 WNW 1 1 1 2 0 0 5 NW 0 4 4 2 0 0 10 NNW 0 1 3 4 0 0 8 Variable 0 0 0 0 0 0 0 Total 14 24 59 87 23 0 207 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 15 34 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: January - March 2021 Stability Class - Extremely Stable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 0 2 3 0 0 6 NNE 1 2 5 0 0 0 8 NE 3 1 4 0 0 0 8 ENE 2 1 2 0 0 0 5 E 0 2 1 0 0 0 3 ESE 0 0 3 0 0 0 3 SE 0 1 0 11 3 0 15 SSE 1 5 1 4 0 0 11 s 0 5 4 9 0 0 18 SSW 0 0 0 12 0 0 12 SW 1 1 0 0 0 0 2 WSW 0 1 0 0 0 0 1 w 0 5 1 0 0 0 6 WNW 2 0 0 0 0 0 2 NW 0 6 0 0 0 0 6 NNW 0 1 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 11 31 23 39 3 0 107 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 15 35 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Extremely Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 3 11 7 0 0 21 NNE 0 0 6 0 0 0 6 NE 0 2 3 0 0 0 5 ENE 1 7 2 1 0 0 11 E 1 4 3 0 0 0 8 ESE 4 2 3 1 0 0 10 SE 2 5 8 0 0 0 15 SSE 2 6 14 1 0 0 23 s 2 6 8 8 0 0 24 SSW 1 17 41 2 0 0 61 SW 2 7 17 5 0 0 31 WSW 1 1 11 4 0 0 17 w 0 3 22 4 0 0 29 WNW 1 6 22 0 0 0 29 NW 0 4 10 0 0 0 14 NNW 0 12 15 0 0 0 27 Variable 0 0 0 0 0 0 0 Total 17 85 196 33 0 0 33 1 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 36 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Moderately Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 3 2 0 0 0 5 NNE 0 3 3 1 0 0 7 NE 1 1 0 0 0 0 2 ENE 2 3 0 0 0 0 5 E 1 2 0 0 0 0 3 ESE 1 4 1 0 0 0 6 SE 0 1 1 0 0 0 2 SSE 0 1 0 0 0 0 1 s 0 3 0 1 0 0 4 SSW 0 5 1 0 0 0 6 SW 0 3 2 1 0 0 6 WSW 0 1 2 1 0 0 4 w 0 1 4 1 0 0 6 WNW 0 2 1 0 0 0 3 NW 0 1 4 0 0 0 5 NNW 0 2 10 0 0 0 12 Variable 0 0 0 0 0 0 0 Total 5 36 31 5 0 0 77 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 37 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Slightly Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 9 6 3 0 0 18 NNE 0 3 6 0 0 0 9 NE 0 3 0 0 0 0 3 ENE 0 4 2 1 0 0 7 E 0 5 3 0 0 0 8 ESE 2 5 1 0 0 0 8 SE 0 8 1 0 0 0 9 SSE 1 2 0 0 0 0 3 s 0 3 2 1 0 0 6 SSW 0 15 11 2 0 0 28 SW 1 4 6 1 0 0 12 WSW 0 4 8 0 0 0 12 w 1 5 10 1 0 0 17 WNW 1 7 8 0 0 0 16 NW 0 8 4 4 0 0 16 NNW 0 5 5 2 0 0 12 Variable 0 0 0 0 0 0 0 Total 6 90 73 15 0 0 18 4 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 38 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Neutral - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 5 15 16 1 0 0 37 NNE 3 17 10 1 0 0 31 NE 3 18 10 2 0 0 33 ENE 1 20 10 1 0 0 32 E 8 20 13 1 0 0 42 ESE 6 20 10 1 0 0 37 SE 4 19 8 1 0 0 32 SSE 10 18 11 2 0 0 41 s 9 34 16 6 0 0 65 SSW 5 38 26 3 1 0 73 SW 8 19 19 2 0 0 48 WSW 3 20 15 0 0 0 38 w 7 19 26 2 0 0 54 WNW 3 31 17 1 0 0 52 NW 5 34 14 8 0 0 61 NNW 6 29 19 2 0 0 56 Variable 0 0 0 0 0 0 0 Total 86 371 240 34 1 0 732 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 39 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Slightly Stable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7 9 5 0 0 0 21 NNE 4 3 2 0 0 0 9 NE 4 3 0 0 0 0 7 ENE 6 7 2 0 0 0 15 E 5 16 5 1 0 0 27 ESE 10 13 5 0 0 0 28 SE 14 17 4 0 0 0 35 SSE 9 24 10 1 0 0 44 s 9 40 14 3 0 0 66 SSW 4 39 12 0 0 0 55 SW 15 24 10 0 0 0 49 WSW 8 26 6 0 0 0 40 w 5 21 2 0 0 0 28 WNW 6 14 0 0 0 0 20 NW 7 21 1 0 0 0 29 NNW 1 13 8 0 0 0 22 Variable 0 0 0 0 0 0 0 Total 114 2 90 86 5 0 0 495 Hours of calm in this stability class: 3 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 40 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Moderately Stable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 0 0 0 0 0 1 NNE 5 1 1 0 0 0 7 NE 7 0 0 0 0 0 7 ENE 6 7 1 0 0 0 14 E 9 11 0 0 0 0 20 ESE 7 17 1 0 0 0 25 SE 6 8 1 0 0 0 15 SSE 9 18 2 0 0 0 29 s 7 5 0 0 0 0 12 SSW 9 5 6 0 0 0 20 SW 6 3 0 0 0 0 9 WSW 3 1 0 0 0 0 4 w 8 1 0 0 0 0 9 WNW 12 4 0 0 0 0 16 NW 0 2 0 0 0 0 2 NNW 2 2 0 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 97 85 12 0 0 0 194 Hours of calm in this stability class: 3 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 41 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Extremely Stable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 2 0 0 0 0 5 NNE 3 1 0 0 0 0 4 NE 3 0 0 0 0 0 3 ENE 4 2 1 0 0 0 7 E 9 5 0 0 0 0 14 ESE 15 5 0 0 0 0 20 SE 12 3 0 0 0 0 15 SSE 16 2 0 0 0 0 18 s 5 5 0 0 0 0 10 SSW 8 1 1 0 0 0 10 SW 10 0 0 0 0 0 10 WSW 10 0 0 0 0 0 10 w 5 0 0 0 0 0 5 WNW 6 1 0 0 0 0 7 NW 5 2 0 0 0 0 7 NNW 1 5 0 0 0 0 6 Variable 0 0 0 0 0 0 0 Total 115 34 2 0 0 0 151 Hours of calm in this stability class: 9 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 42 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Extremely Unstable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 2 0 0 3 NNE 0 1 1 1 0 0 3 NE 0 1 5 2 1 0 9 ENE 0 0 1 0 0 0 1 E 0 0 1 0 0 0 1 ESE 0 2 0 0 1 0 3 SE 0 0 0 0 0 0 0 SSE 0 2 1 5 4 3 15 s 0 0 1 3 7 2 13 SSW 0 1 7 16 10 3 37 SW 0 1 2 2 5 2 12 WSW 1 3 0 4 2 0 10 w 1 0 1 6 0 0 8 WNW 0 0 1 0 0 0 1 NW 0 0 0 2 2 0 4 NNW 0 0 1 4 2 0 7 Variable 0 0 0 0 0 0 0 Total 2 11 23 47 34 10 127 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 43 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Moderately Unstable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 0 2 5 2 0 10 NNE 0 1 2 1 1 0 5 NE 0 0 2 4 0 0 6 ENE 0 0 2 0 0 0 2 E 0 1 0 2 3 0 6 ESE 0 0 0 2 0 0 2 SE 0 3 1 1 0 0 5 SSE 0 0 2 2 1 1 6 s 0 0 1 0 1 1 3 SSW 0 1 3 3 0 0 7 SW 0 1 0 1 1 1 4 WSW 0 1 4 3 2 0 10 w 0 0 3 3 5 0 11 WNW 0 0 1 7 3 0 11 NW 0 0 0 5 5 0 10 NNW 0 0 5 3 0 0 8 Variable 0 0 0 0 0 0 0 Total 1 8 28 42 24 3 106 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 44 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Slightly Unstable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 5 7 7 2 0 21 NNE 0 5 9 0 8 0 22 NE 0 2 6 1 2 0 11 ENE 0 6 0 0 0 0 6 E 0 5 1 0 2 0 8 ESE 0 1 1 2 2 0 6 SE 0 1 2 4 0 1 8 SSE 0 1 3 3 2 0 9 s 0 0 5 6 1 0 12 SSW 1 3 5 5 3 0 17 SW 0 3 7 5 2 2 19 WSW 0 0 4 5 3 0 12 w 0 2 4 6 4 0 16 WNW 0 1 2 8 1 0 12 NW 1 2 3 6 0 0 12 NNW 1 2 8 2 0 0 13 Variable 0 0 0 0 0 0 0 Total 3 39 67 60 32 3 204 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 45 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Neutral - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 14 22 13 2 0 51 NNE 1 12 17 6 5 0 41 NE 0 9 13 8 7 0 37 ENE 2 14 18 4 6 1 45 E 3 7 8 19 3 0 40 ESE 4 9 4 18 14 0 49 SE 3 11 7 11 2 1 35 SSE 1 11 13 24 5 1 55 s 1 10 30 36 15 2 94 SSW 1 9 40 44 17 4 115 SW 1 6 13 27 12 3 62 WSW 3 11 13 18 3 0 48 w 3 8 14 19 2 0 46 WNW 0 7 5 20 4 0 36 NW 1 12 18 44 8 0 83 NNW 1 8 18 25 1 1 54 Variable 0 0 0 0 0 0 0 Total 25 1 58 253 336 10 6 13 891 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 46 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Slightly Stable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 14 12 1 0 28 NNE 2 1 5 4 1 0 13 NE 0 4 6 7 1 0 18 ENE 1 12 3 1 1 0 18 E 1 4 10 7 0 0 22 ESE 0 9 8 7 5 0 29 SE 2 10 8 8 0 0 28 SSE 1 10 10 12 10 0 43 s 0 6 18 34 26 1 85 SSW 1 11 18 30 26 1 87 SW 1 9 13 27 8 0 58 WSW 0 1 11 12 4 0 28 w 0 2 12 15 2 0 31 WNW 1 2 7 6 5 0 21 NW 1 2 19 3 0 0 25 NNW 0 0 14 11 1 0 26 Variable 0 0 0 0 0 0 0 Total 11 84 176 196 91 2 560 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 47 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Moderately Stable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 2 4 1 0 0 8 NNE 2 1 3 2 0 0 8 NE 0 4 1 1 0 0 6 ENE 0 3 2 2 0 0 7 E 0 3 3 1 0 0 7 ESE 1 6 6 0 0 0 13 SE 2 8 6 1 0 0 17 SSE 0 3 10 9 0 0 22 s 0 4 9 11 0 0 24 SSW 2 6 4 15 6 0 33 SW 2 2 1 8 0 0 13 WSW 1 3 2 9 1 0 16 w 1 3 2 4 0 0 10 WNW 1 2 7 1 0 0 11 NW 1 3 4 2 0 0 10 NNW 0 0 4 3 0 0 7 Variable 0 0 0 0 0 0 0 Total 14 53 68 70 7 0 212 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 48 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: April - June 2021 Stability Class - Extremely Stable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 0 0 0 0 1 NNE 1 1 1 0 0 0 3 NE 0 1 1 0 0 0 2 ENE 1 2 0 0 0 0 3 E 1 3 2 1 0 0 7 ESE 0 1 2 2 0 0 5 SE 0 1 0 0 0 0 1 SSE 1 1 2 1 0 0 5 s 0 3 4 1 0 0 8 SSW 1 1 2 1 0 0 5 SW 1 5 7 4 1 0 18 WSW 2 1 3 2 1 0 9 w 0 2 3 0 0 0 5 WNW 0 2 1 0 0 0 3 NW 1 1 2 0 0 0 4 NNW 1 1 0 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 10 27 30 12 2 0 81 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 49 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Extremely Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 2 12 3 0 0 19 NNE 0 1 3 0 0 0 4 NE 0 1 1 0 0 0 2 ENE 0 5 0 0 0 0 5 E 0 2 0 0 0 0 2 ESE 0 15 2 0 0 0 17 SE 0 12 3 0 0 0 15 SSE 0 26 1 0 0 0 27 s 0 23 6 0 0 0 29 SSW 0 28 14 0 0 0 42 SW 0 8 6 1 0 0 15 WSW 0 7 7 6 0 0 20 w 0 8 11 0 0 0 19 WNW 0 6 13 0 0 0 19 NW 0 3 5 0 0 0 8 NNW 1 1 3 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 3 148 87 10 0 0 248 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 50 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Moderately Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 1 1 0 0 6 NNE 0 0 1 0 0 0 1 NE 0 2 0 0 0 0 2 ENE 0 3 1 0 0 0 4 E 0 2 0 0 0 0 2 ESE 0 8 0 0 0 0 8 SE 0 3 0 0 0 0 3 SSE 0 2 1 0 0 0 3 s 0 3 0 0 0 0 3 SSW 0 5 0 0 0 0 5 SW 0 9 3 1 0 0 13 WSW 0 5 2 0 0 0 7 w 0 4 7 0 0 0 11 WNW 0 6 0 0 0 0 6 NW 0 6 0 0 0 0 6 NNW 0 3 4 0 0 0 7 Variable 0 0 0 0 0 0 0 Total 0 65 20 2 0 0 87 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 51 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Slightly Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 10 5 0 0 0 15 NNE 0 2 1 0 0 0 3 NE 0 2 2 0 0 0 4 ENE 0 10 0 0 0 0 10 E 0 6 1 0 0 0 7 ESE 0 11 0 0 0 0 11 SE 0 9 0 0 0 0 9 SSE 0 7 1 0 0 0 8 s 0 11 0 0 0 0 11 SSW 0 15 5 0 0 0 20 SW 0 16 3 0 0 0 19 WSW 0 18 7 0 0 0 25 w 0 1 5 0 0 0 6 WNW 0 7 3 0 0 0 10 NW 0 8 1 0 0 0 9 NNW 0 6 1 0 0 0 7 Variable 0 0 0 0 0 0 0 Total 0 13 9 35 0 0 0 174 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 52 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Neutral - 196Ft-33Ft Delta-T (F}

Winds Measured at 33 Feet Wind Speed (in mph}

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 16 16 0 0 0 33 NNE 0 10 4 0 0 0 14 NE 4 14 27 3 0 0 48 ENE 4 38 4 0 0 0 46 E 5 32 3 0 0 0 40 ESE 7 20 0 0 0 0 27 SE 3 20 2 0 0 0 25 SSE 8 22 3 0 0 0 33 s 10 27 4 0 0 0 41 SSW 5 31 8 0 0 0 44 SW 1 31 8 0 0 0 40 WSW 5 17 7 0 0 0 29 w 9 18 10 0 0 0 37 WNW 8 29 7 0 0 0 44 NW 4 23 8 0 0 0 35 NNW 1 15 6 1 0 0 23 Variable 0 0 0 0 0 0 0 Total 75 363 117 4 0 0 559 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 53 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Slightly Stable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 14 3 0 0 0 18 NNE 12 28 0 0 0 0 40 NE 11 13 3 0 0 0 27 ENE 17 15 1 0 0 0 33 E 30 19 0 0 0 0 49 ESE 27 5 0 0 0 0 32 SE 34 6 0 0 0 0 40 SSE 25 10 4 1 0 0 40 s 13 23 2 1 0 0 39 SSW 10 45 3 1 0 0 59 SW 11 41 3 0 0 0 55 WSW 9 12 0 0 0 0 21 w 7 22 1 0 0 0 30 WNW 19 27 0 0 0 0 46 NW 7 23 0 0 0 0 30 NNW 8 20 0 0 0 0 28 Variable 0 0 0 0 0 0 0 Total 241 323 20 3 0 0 587 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 54 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Moderately Stable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 6 0 0 0 0 0 6 NNE 8 2 0 0 0 0 10 NE 9 2 0 0 0 0 11 ENE 12 0 0 0 0 0 12 E 44 19 0 0 0 0 63 ESE 31 6 1 0 0 0 38 SE 28 1 0 0 0 0 29 SSE 12 3 0 0 0 0 15 s 13 2 0 0 0 0 15 SSW 10 5 0 0 0 0 15 SW 1 1 0 0 0 0 2 WSW 3 2 0 0 0 0 5 w 14 8 0 0 0 0 22 WNW 22 10 0 0 0 0 32 NW 4 2 0 0 0 0 6 NNW 2 4 0 0 0 0 6 Variable 0 0 0 0 0 0 0 Total 219 67 1 0 0 0 287 Hours of calm in this stability class: 3 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 55 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Extremely Stable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7 l 0 0 0 0 8 NNE 8 0 0 0 0 0 8 NE 8 0 0 0 0 0 8 ENE 12 1 0 0 0 0 13 E 46 2 0 0 0 0 48 ESE 30 1 0 0 0 0 31 SE 21 0 0 0 0 0 21 SSE 8 0 0 0 0 0 8 s 9 0 0 0 0 0 9 SSW 6 0 0 0 0 0 6 SW 10 0 0 0 0 0 10 WSW 10 0 0 0 0 0 10 w 16 0 0 0 0 0 16 WNW 23 1 0 0 0 0 24 NW 8 1 0 0 0 0 9 NNW 3 1 0 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 225 8 0 0 0 0 233 Hours of calm in this stability class: 28 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 56 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Extremely Unstable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 1 0 0 1 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 0 0 0 0 0 0 0 SE 0 0 6 0 0 0 6 SSE 0 0 6 6 0 0 12 s 0 0 7 8 2 0 17 SSW 0 0 10 10 5 0 25 SW 0 0 5 0 0 0 5 WSW 0 0 1 0 0 0 1 w 0 0 1 0 0 0 1 WNW 0 0 0 1 0 0 1 NW 0 0 0 2 2 0 4 NNW 0 0 0 2 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 0 36 30 9 0 75 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 57 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Moderately Unstable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 0 3 1 0 5 NNE 0 0 1 3 0 0 4 NE 0 1 0 0 0 0 1 ENE 0 2 2 0 0 0 4 E 0 1 2 0 0 0 3 ESE 0 1 5 0 0 0 6 SE 0 5 11 0 0 0 16 SSE 0 2 2 0 0 0 4 s 0 3 4 7 0 0 14 SSW 0 1 9 7 2 0 19 SW 0 0 4 2 1 0 7 WSW 0 1 4 0 2 0 7 w 0 1 3 3 0 0 7 WNW 0 1 3 4 0 0 8 NW 0 2 3 2 3 0 10 NNW 0 0 2 2 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 22 55 33 9 0 119 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 58 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Slightly Unstable - 296Ft-33Ft Delta-T (Fl Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 5 5 2 1 0 13 NNE 0 4 1 3 0 0 8 NE 0 2 7 1 0 0 10 ENE 0 2 5 0 0 0 7 E 0 5 2 0 0 0 7 ESE 0 2 6 0 0 0 8 SE 0 12 5 0 0 0 17 SSE 0 7 3 1 0 0 11 s 0 11 2 2 2 0 17 SSW 0 2 6 9 1 1 19 SW 0 6 9 6 0 0 21 WSW 0 9 8 6 0 0 23 w 0 12 3 7 0 0 22 WNW 0 4 9 3 1 0 17 NW 0 8 5 2 0 0 15 NNW 1 9 4 0 0 0 14 Variable 0 0 0 0 0 0 0 Total 1 100 80 42 5 1 229 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 59 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Neutral - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 7 8 11 0 0 29 NNE 0 11 15 8 1 0 35 NE 0 14 26 29 0 0 69 ENE 2 11 29 2 0 0 44 E 0 20 17 5 0 0 42 ESE 7 5 7 0 0 0 19 SE 1 6 11 1 1 0 20 SSE 2 8 11 7 3 0 31 s 5 11 6 17 2 0 41 SSW 0 17 18 15 4 0 54 SW 1 8 17 26 7 3 62 WSW 4 12 25 10 0 0 51 w 0 6 19 12 2 0 39 WNW 3 6 15 8 0 0 32 NW 1 10 20 16 3 0 50 NNW 1 11 14 9 3 1 39 Variable 0 0 0 0 0 0 0 Total 30 163 258 176 26 4 657 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 60 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Slightly Stable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 10 23 21 0 0 55 NNE 0 4 12 10 0 0 26 NE 1 2 16 17 2 0 38 ENE 1 7 13 8 0 0 29 E 1 18 11 4 0 0 34 ESE 0 9 8 10 1 0 28 SE 0 8 16 12 1 0 37 SSE 0 14 15 25 0 0 54 s 1 7 17 25 9 0 59 SSW 1 6 17 37 10 1 72 SW 2 9 24 38 7 1 81 WSW 1 2 8 8 3 0 22 w 0 1 7 12 0 0 20 WNW 0 3 6 18 0 0 27 NW 2 3 15 10 0 0 30 NNW 1 3 20 15 0 0 39 Variable 0 0 0 0 0 0 0 Total 12 106 228 270 33 2 65 1 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 61 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Moderately Stable - 296Ft-33Ft Delta-T (Fl Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 5 1 0 0 10 NNE 2 3 2 1 0 0 8 NE 0 6 3 1 0 0 10 ENE 1 5 2 0 0 0 8 E 2 4 11 2 0 0 19 ESE 1 2 12 11 1 0 27 SE 1 6 9 12 0 0 28 SSE 2 3 6 14 0 0 25 s 2 5 13 13 1 0 34 SSW 0 4 31 8 0 0 43 SW 2 1 8 17 0 0 28 WSW 3 1 2 13 0 0 19 w 1 2 5 2 0 0 10 WNW 0 2 2 3 0 0 7 NW 2 1 10 2 0 0 15 NNW 0 4 7 4 0 0 15 Variable 0 0 0 0 0 0 0 Total 19 53 128 104 2 0 306 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 62 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: July - September 2021 Stability Class - Extremely Stable - 296Ft-33Ft Delta-T (Fl Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 0 0 0 2 NNE 2 1 1 0 0 0 4 NE 0 7 3 0 0 0 10 ENE 3 1 5 0 0 0 9 E 0 0 5 0 0 0 5 ESE 0 1 8 3 0 0 12 SE 1 3 4 3 0 0 11 SSE 0 4 14 4 1 0 23 s 1 5 7 5 0 0 18 SSW 2 3 12 6 0 0 23 SW 2 2 11 5 0 0 20 WSW 0 9 0 0 0 0 9 w 0 4 1 0 0 0 5 WNW 1 2 4 0 0 0 7 NW 0 0 2 0 0 0 2 NNW 1 3 3 2 0 0 9 Variable 0 0 0 0 0 0 0 Total 13 45 82 28 1 0 169 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 63 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Extremely Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 2 0 0 0 2 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 2 4 0 0 0 6 SE 0 3 0 0 0 0 3 SSE 0 8 4 0 0 0 12 s 0 9 5 0 0 0 14 SSW 1 15 5 0 0 0 21 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 5 0 0 0 5 WNW 0 0 1 0 0 0 1 NW 0 0 3 0 0 0 3 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 1 37 29 0 0 0 67 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 64 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Moderately Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 1 0 0 0 1 E 0 0 0 0 0 0 0 ESE 0 1 2 0 0 0 3 SE 0 1 1 0 0 0 2 SSE 0 3 0 0 0 0 3 s 0 0 0 0 0 0 0 SSW 1 5 0 0 0 0 6 SW 0 3 0 0 0 0 3 WSW 0 1 0 0 0 0 1 w 0 6 2 0 0 0 8 WNW 0 2 5 0 0 0 7 NW 0 0 2 0 0 0 2 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 1 22 13 0 0 0 36 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 65 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Slightly Unstable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 0 0 0 2 NNE 0 1 3 0 0 0 4 NE 0 3 0 0 0 0 3 ENE 0 5 1 0 0 0 6 E 0 2 1 0 0 0 3 ESE 0 0 7 0 0 0 7 SE 0 3 0 0 0 0 3 SSE 0 3 1 0 0 0 4 s 1 6 0 0 0 0 7 SSW 0 7 2 0 0 0 9 SW 0 10 4 0 0 0 14 WSW 0 4 2 2 0 0 8 w 0 9 10 0 0 0 19 WNW 0 7 8 2 0 0 17 NW 0 0 2 0 0 0 2 NNW 0 2 1 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 1 62 44 4 0 0 111 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 66 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Neutral - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 5 25 39 13 0 0 82 NNE 1 18 11 3 0 0 33 NE 9 31 4 2 0 0 46 ENE 5 45 28 7 0 0 85 E 6 21 32 6 0 0 65 ESE 9 16 31 0 0 0 56 SE 6 22 2 0 0 0 30 SSE 7 20 3 0 0 0 30 s 2 15 3 0 0 0 20 SSW 12 21 13 0 0 0 46 SW 3 20 14 2 0 0 39 WSW 6 20 29 19 1 0 75 w 6 55 51 29 0 0 141 WNW 4 54 87 27 0 0 172 NW 4 27 8 0 0 0 39 NNW 3 32 10 0 0 0 45 Variable 0 0 0 0 0 0 0 Total 88 442 365 108 1 0 1004 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 67 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Slightly Stable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 6 11 0 0 0 0 17 NNE 4 12 0 0 0 0 16 NE 5 10 0 0 0 0 15 ENE 7 12 1 0 0 0 20 E 11 20 6 0 0 0 37 ESE 12 21 9 0 0 0 42 SE 12 33 4 0 0 0 49 SSE 10 50 9 2 0 0 71 s 5 22 5 2 0 0 34 SSW 14 39 7 2 0 0 62 SW 7 16 7 0 1 0 31 WSW 17 13 5 0 0 0 35 w 22 78 10 0 0 0 110 WNW 12 40 5 0 0 0 57 NW 9 8 0 0 0 0 17 NNW 5 8 3 0 0 0 16 Variable 0 0 0 0 0 0 0 Total 158 393 71 6 1 0 629 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 68 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Moderately Stable - 196Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 1 0 0 0 0 5 NNE 6 1 0 0 0 0 7 NE 11 1 0 0 0 0 12 ENE 5 0 0 0 0 0 5 E 25 9 0 0 0 0 34 ESE 21 12 0 0 0 0 33 SE 12 2 0 0 0 0 14 SSE 9 12 0 0 0 0 21 s 7 2 0 0 0 0 9 SSW 4 0 0 0 0 0 4 SW 5 1 0 0 0 0 6 WSW 5 0 0 0 0 0 5 w 11 3 0 0 0 0 14 WNW 7 3 0 0 0 0 10 NW 5 1 0 0 0 0 6 NNW 4 2 0 0 0 0 6 Variable 0 0 0 0 0 0 0 Total 141 50 0 0 0 0 191 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 69 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Extremely Stable - 196Ft-33Ft Delta-T (Fl Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 6 0 0 0 0 0 6 NNE 2 0 0 0 0 0 2 NE 10 1 0 0 0 0 11 ENE 15 0 0 0 0 0 15 E 25 3 0 0 0 0 28 ESE 35 6 0 0 0 0 41 SE 12 0 0 0 0 0 12 SSE 8 0 0 0 0 0 8 s 7 0 0 0 0 0 7 SSW 5 0 0 0 0 0 5 SW 4 0 0 0 0 0 4 WSW 6 0 0 0 0 0 6 w 2 0 0 0 0 0 2 WNW 9 3 0 0 0 0 12 NW 5 0 0 0 0 0 5 NNW 4 1 0 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 155 14 0 0 0 0 169 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 70 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Extremely Unstable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 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 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 1 2 0 0 3 s 0 0 1 1 1 0 3 SSW 0 0 2 5 3 0 10 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 0 4 8 4 0 16 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 71 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Moderately Unstable - 296Ft-33Ft Oelta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 1 1 0 0 2 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 1 0 0 0 1 SE 0 0 2 1 3 0 6 SSE 0 0 3 4 0 0 7 s 0 0 4 5 1 0 10 SSW 0 0 7 1 2 0 10 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 2 5 1 0 8 NW 0 0 0 0 3 0 3 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 0 20 17 10 0 47 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 72 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Slightly Unstable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 1 0 0 0 1 NE 0 0 3 0 0 0 3 ENE 0 2 5 0 0 0 7 E 0 1 0 0 0 0 1 ESE 0 0 1 2 0 0 3 SE 0 0 1 4 3 0 8 SSE 0 0 1 3 0 0 4 s 0 0 1 3 1 0 5 SSW 0 0 10 3 0 0 13 SW 0 3 2 2 0 0 7 WSW 0 1 7 2 0 0 10 w 0 1 4 5 0 1 11 WNW 0 1 15 7 2 2 27 NW 0 1 3 5 2 0 11 NNW 0 0 3 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 10 57 36 8 3 114 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 73 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Neutral - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 12 16 22 10 1 63 NNE 1 1 14 21 8 4 49 NE 2 3 19 9 1 0 34 ENE 2 14 36 19 7 6 84 E 0 6 22 21 8 3 60 ESE 2 10 8 21 25 2 68 SE 3 3 8 20 8 0 42 SSE 1 5 7 17 4 0 34 s 2 7 11 24 3 4 51 SSW 2 15 10 9 11 3 50 SW 3 8 7 12 7 1 38 WSW 2 4 15 13 12 10 56 w 0 8 14 35 38 20 115 WNW 0 15 40 73 25 26 179 NW 2 14 22 34 23 8 103 NNW 1 7 22 19 2 0 51 Variable 0 0 0 0 0 0 0 Total 25 132 271 369 192 88 1077 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 74 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Slightly Stable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 4 5 0 0 10 NNE 1 3 5 8 0 0 17 NE 0 1 7 10 0 0 18 ENE 1 2 11 4 0 0 18 E 1 2 8 9 0 0 20 ESE 0 2 3 14 8 0 27 SE 0 1 2 20 15 2 40 SSE 0 3 10 25 11 3 52 s 0 4 21 29 24 3 81 SSW 0 1 15 30 16 4 66 SW 2 1 5 24 11 0 43 WSW 1 4 5 5 2 0 17 w 0 2 17 23 13 0 55 WNW 0 2 19 48 4 0 73 NW 4 1 21 20 2 0 48 NNW 0 7 17 6 2 0 32 Variable 0 0 0 0 0 0 0 Total 10 37 170 280 108 12 617 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 75 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Moderately Stable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 4 0 0 0 6 NNE 0 3 5 3 0 0 11 NE 2 2 3 4 0 0 11 ENE 0 1 2 2 0 0 5 E 0 3 14 8 0 0 25 ESE 0 3 1 3 2 0 9 SE 0 2 9 8 3 0 22 SSE 0 6 13 11 2 0 32 s 2 1 9 13 0 0 25 SSW 1 1 7 16 0 0 25 SW 1 0 1 1 0 0 3 WSW 0 1 1 4 0 0 6 w 0 1 5 2 0 0 8 WNW 1 3 3 6 0 0 13 NW 0 1 5 2 0 0 8 NNW 1 1 10 3 0 0 15 Variable 0 0 0 0 0 0 0 Total 8 31 92 86 7 0 224 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 76 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Joint Frequency Tables Quad Cities Generating Station Period of Record: October - December 2021 Stability Class - Extremely Stable - 296Ft-33Ft Delta-T (F)

Winds Measured at 296 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 0 0 1 0 0 2 NNE 0 2 1 0 0 0 3 NE 1 0 1 0 0 0 2 ENE 2 2 1 0 0 0 5 E 0 1 1 2 0 0 4 ESE 0 0 2 7 1 0 10 SE 4 1 7 0 0 0 12 SSE 0 1 4 3 0 0 8 s 0 3 6 3 0 0 12 SSW 0 3 3 11 0 0 17 SW 0 3 3 6 0 0 12 WSW 0 2 3 0 0 0 5 w 0 2 3 0 0 0 5 WNW 2 1 2 0 0 0 5 NW 1 2 0 0 0 0 3 NNW 3 3 1 0 0 0 7 Variable 0 0 0 0 0 0 0 Total 14 26 38 33 1 0 112 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 77 of 78

Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Quad Cities Nuclear Power Station 2021 Annual Radioactive Effluent Release Report Solid Waste and Irradiated Fuel Shipments Page 1 of 1 A. Solid Waste shipped Offsite for Burial or Disposal (Not irradiated fuel)

1. Types of Waste Types of Waste Total Total Activity Period Est. Total Quantity (Ci) Error%

(m3)

a. Spent resins, filter sludqes, evaporator bottoms, etc 9.75E+01 6.02E+02 2021 2.50E+01
b. Dry compressed waste, contaminated equip, etc 4.81E+02 9.37E-01 2021 2.50E+01
c. Irradiated components, control rods, etc N/A N/A N/A N/A
d. Other (describe) 2.06E+01 7.94E-04 2021 2.50E+01
2. Estimate of major nuclides composition (by waste type)

Maior Nuclide Composition  %/Ci

a. Fe-55 57.99% I 3.49E+02 Co-60 32.2% / 1.94E+02 Zn-65 1.53% / 9.19E+00 Ni-63 1.38% / 8.31E+00 Cs-137 5.45% I 3.28E+01 Mn-54 1.33% / 8.04E+00
b. Co-60 53.25% / 4.99E-01 Fe-55 29.32% / 2.75E-01 Zn-65 5.27% / 4.95E-02 Mn-54 7.81% / 7.33E-02 Ag-110m 1.36% / 1.27E-02 Cs-137 2.07% I 1.94E-02
c. N/A N/A
d. Fe-55 31.41% / 2.50E-04 Co-60 52.3% I 4.16E-04 Zn-65 3.77% I 3.00E-05 Aq-11 Om 1.14% / 9.07E-06 Cs-137 2.45% / 1.95E-05 Mn-54 7.59% I 6.03E-05
3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 9 Highway Processor 21 Highway Disposal B. Irradiated Fuel Shipments (disposition)

Number of Shipments Mode of Transportation Destination N/A N/A N/A C. Changes to the Process Control Program None.

D. Major Changes to Radioactive Waste Treatment Systems: None.

Assess initiated safety related changes to the radioactive waste system (liquid, gaseous and solid) for the period in which the evaluation was reviewed, as applicable.

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