Text

2022 Annual Radioactive Effluent Release Report
	ML23059A350
Person / Time
Site:	Saint Lucie
Issue date:	02/28/2023
From:	Strand D; Florida Power & Light Co
To:	; Office of Nuclear Reactor Regulation, Document Control Desk
References
	L-2023-032
	Download: ML23059A350 (1)
	v • d • e

FPL U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555 Re:

St. Lucie Units 1 and 2 February 28, 2023 Docket Nos. 50-335 and 50-389 2022 Annual Radioactive Effluent Release Report L-2023-032 10 CFR 50.36a Pursuant to 10 CFR 50.36a(a)(2) and Technical Specification (TS) 6.9.1.7, enclosed is the 2022 Annual Radioactive Effluent Release Report for St. Lucie Units 1 and 2. The report provides information for the 12-month period beginning January 1, 2022 and ending December 31, 2022.

If you have any questions regarding this submittal, please contact Kenneth Mack at 561-904-3635.

Sincerely, lj") l ~ 3 p=----

Dianne Strand General Manager, Regulatory Affairs Florida Power & Light Company

Enclosure:

Annual Radioactive Effluent Release Report cc:

USNRC Regional Administrator, Region II USNRC Project Manager, St. Lucie Nuclear Plant USNRC Resident Inspector, St. Lucie Nuclear Plant Florida Power & Light Company 6501 S. Ocean Drive, Jensen Beach, FL 34957

ENCLOSURE COMBINED ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT 58 pages follow

FLORIDA POWER & LIGHT COMPANY ST. LUCIE UNITS 1 AND 2 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT JANUARY 1, 2022 THROUGH DECEMBER 31, 2022 1.0 PROGRAM DESCRIPTION 2.0 SUPPLEMENTAL INFORMATION 2.1 Abnormal Releases or Abnormal Discharges 2.2 Non-Routine Planned Discharges 2.3 Radioactive Waste Treatment System Changes 2.4 Annual Land Use Census Changes 2.5 Effluent Monitoring System Inoperability 2.6 Offsite Dose Calculation Manual Changes 2.7 Process Control Program Changes 2.8 Corrections to Previous Reports 2.9 Other 2.10 Groundwater Protection Program 3.0 TABLES 3.1 Gaseous Effluents and Liquid Effluents 3.2 Solid Waste Storage and Shipments 3.3 Dose Assessments 3.4 Visitor Dose 1

1.0 PROGRAM DESCRIPTION Regulatory Limits The Offsite Dose Calculation Manual (ODCM) Radiological Effluent Control limits applicable to the release of radioactive material in liquid and gaseous effluents are described in the following sections.

Fission and Activation Gases (Noble Gases)

The dose rate due to radioactive materials released in gaseous effluents, from the Site to areas at and beyond the Site boundary, shall be limited to less than or equal to 500 mrem/yr to the whole body and less than or equal to 3000 mrem/yr to the skin.

The air dose due to noble gases released in gaseous effluents from each Unit, to areas at and beyond the Site boundary, shall be limited to:

a. During any calendar quarter: Less than or equal to 5 mrad for gamma radiation and less than or equal to 10 mrad for beta radiation, and

b. During any calendar year: Less than or equal to 10 mrad for gamma radiation and less than or equal to 20 mrad for beta radiation.

Iodine-131, Iodine-133, Tritium, Carbon-14, and Radioactive Material in Particulate Form The dose rate due to Iodine-131 (I-131), Iodine-133 (I-133), Tritium, and all radionuclides in particulate form with half-lives greater than 8 days, released in gaseous effluents from the Site to areas at and beyond the Site boundary, shall be limited to less than or equal to 1500 mrem/yr to any organ.

The dose to a MEMBER OF THE PUBLIC from I-131, I-133, Tritium, Carbon-14 (C-14), and all radionuclides in particulate form with half-lives greater than 8 days in gaseous effluents released from each Unit, to areas at and beyond the Site boundary, shall be limited to:

a. During any calendar quarter: Less than or equal to 7.5 mrem to any organ, and

b. During any calendar year: Less than or equal to 15 mrem to any organ.

Liquid Effluents The concentration of radioactive material released in liquid effluents to unrestricted areas shall be limited to 10 times the concentrations specified in 10 CFR Part 20, Appendix B, Table 2, Column 2 for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.0E-4 Ci/ml total activity.

The dose or dose commitment to a MEMBER OF THE PUBLIC from radioactive materials in liquid effluents released from each Unit, to unrestricted areas, shall be limited to:

a. During any calendar quarter: Less than or equal to 1.5 mrem to the whole body and less than or equal to 5 mrem to any organ, and

b. During any calendar year: Less than or equal to 3 mRem to the whole body and less than or equal to 10 mrem to any organ.

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Total Dose The annual (calendar year) dose or dose commitment to any MEMBER OF THE PUBLIC due to releases of radioactivity and to radiation from uranium fuel cycle sources shall be limited to less than or equal to 25 mrem to the whole body or any organ, except the thyroid which shall be limited to less than or equal to 75 mrem.

Effluent Concentration Limits Gaseous Effluents For gaseous effluents, effluent concentration limits (ECL) values are not directly used in release rate calculations since the applicable limits are expressed in terms of dose rate at the Site boundary.

Liquid Effluents The values specified in 10 CFR Part 20, Appendix B, Table 2, Column 2 are used as the ECL for liquid radioactive effluents released to unrestricted areas. A value of 2.0E-04 Ci/ml is used as the ECL for dissolved and entrained noble gases in liquid effluents.

Measurements and Approximations of Total Radioactivity Measurements of total radioactivity in liquid and gaseous radioactive effluents were accomplished in accordance with the sampling and analysis requirements of Tables 4.11-1 and 4.11-2, respectively, of the St. Lucie ODCM. Estimates of errors are in accordance with Methodology Section 4.0.4 of the ODCM.

The estimate of errors associated with values reported are below:

LIQUID GASEOUS Error Topic Avg % Max %

Avg % Max %

Release Point Mixing 2 5 NA NA Sampling 1

5 2

5 Sample Preparation 1

5 1

5 Sample Analysis 3

10 3

10 Release Volume 2

5 4

15 Total %

9 30 10 35 (above values are examples only)

The predictability of error for radioactive releases can only be applied to nuclides that are predominant in sample spectrums. Nuclides that are near background relative to the predominant nuclides in a given sample could easily have errors greater than the maximums listed above.

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Liquid Radioactive Effluents Each batch release was sampled and analyzed for gamma emitting radionuclides using gamma spectroscopy prior to release. Composite samples were analyzed monthly for tritium and gross alpha radioactivity in the onsite laboratory using liquid scintillation and air ion chamber counting techniques, respectively. Composite samples were analyzed quarterly for Strontium-89 (Sr-89), Strontium-90 (Sr-90), Iron-55 (Fe-55),

Nickel-63 (Ni-63), and C-14 by a contract laboratory. The results of the composite analyses from the previous month or quarter were used to estimate the quantities of these radionuclides in liquid effluents during the current month or quarter. The total radioactivity in liquid effluent releases was determined from the measured and estimated concentrations of each radionuclide present and the total volume of the effluent released during periods of discharge.

Gaseous Radioactive Effluents Each gaseous batch was sampled and analyzed for radioactivity prior to release. For releases from gas decay tanks, noble gas grab samples were analyzed for gamma emitting radionuclides using gamma spectroscopy.

For releases from the reactor containment buildings, samples were taken of noble gas and tritium grab samples and analyzed for gamma emitting radionuclides prior to each release. The results of the analyses and the total volume of effluent released were used to determine the total amount of radioactivity released in the batch mode.

For continuous effluent release pathways, noble gas and tritium grab samples were collected and analyzed weekly for gamma emitting radionuclides by gamma spectroscopy and liquid scintillation counting techniques, respectively. Continuous release pathways were continuously sampled using radioiodine absorbers and particulate filters. The radioiodine absorbers and particulate filters were analyzed weekly for gamma emitting radionuclides using gamma spectroscopy. Results of the noble gas and tritium grab samples, radioiodine absorber, and particulate filter analyses from the current week along with the average effluent flow rate for the previous week were used to determine the total amount of radioactivity released in the continuous mode. The particulate filters were analyzed weekly for gross alpha activity in the onsite laboratory using the air ion chamber counting technique. Quarterly composites of particulate filters were analyzed for Sr-89 and Sr-90 by a contract laboratory.

Meteorological Monitoring Program In accordance with ODCM Administrative Control 3.11.2.6.b., a summary of hourly meteorological data collected during 2022 is retained onsite.

This data is available for review by the NRC upon request. During 2022, the goal of 90% joint data recovery was met. Actual meteorological data 4

collected during the year was used for the offsite dose calculations in this report.

Carbon-14 Dose Estimation The estimate of C-14 released from the St. Lucie Nuclear Plant was derived from the EPRI document, Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents, Report 1021106, issued December 2010.

The Site-specific source term values used in the St. Lucie calculations were taken from the PWR Section, Page 4-28 of the report, and employed the proxy generation rate values for a Combustion Engineering reactor.

The actual 2022 operating data for the units was employed for the calculations to derive the total curies released for each unit.

The total amount of C-14 released in 2022 from Unit 1 was 10.39 Ci, and the total amount of C-14 released in 2022 from Unit 2 was 11.07 Ci.

Per Regulatory Guide 1.21, Rev 2, Section 5.7, Real exposure pathways are identified for routine discharges and direct radiation based on the results of the Land Use Census. Dose calculations should typically be performed based on real exposure pathways. Because the 2022 Land Use Census did not identify any land within 5 miles of Site that met the criteria of a garden per Technical Specification 3.12.2 listed in the ODCM, the highest dose exposure pathway from C-14 was calculated from the collection of citrus fruit at a grove 5 miles distant in the West sector. A Child consuming citrus produced at the grove located 5 miles in the West direction from Site would have received a total combined Bone Dose of 5.80E-02 mrem attributed to C-14.

Assessment of radiation dose from radioactive effluents to a MEMBER OF THE PUBLIC due to activities inside the Site boundary assumes the visitor to be a Lifeguard at Walton Rocks Beach Recreation Area, located 1 mile southeast of the site. Dose to the visitor on Site for calendar year 2022 was calculated to be 4.37E-9 mrem Total Body dose. See Section 3.4, Dose Assessments, for more detail.

Radiation dose from radioactive effluents to a MEMBER OF THE PUBLIC due to activities inside the Site boundary is a fraction of the 1 mrem annual whole-body dose received by the average US citizen from natural occurring C-14, primarily generated through cosmogenesis in the terrestrial biosphere (

Reference:

National Council of Radiation Protection Report 45, Natural Background Radiation in the United States).

All C-14 dose calculations are based on Regulatory Guide 1.109 values.

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2.0 SUPPLEMENTAL INFORMATION 2.1 Abnormal Releases or Abnormal Discharges 1C GDT lost 21psi between 12-24-2022/0845 and 12-25-2022 /0800 (150 psig to 129 psig). Permit 22-472-B was used to calculate the activity released.

2.2 Non-Routine Planned Discharges No non-routine planned discharges occurred during the report period.

2.3 Radioactive Waste Treatment System Changes No changes were made to the Radioactive Waste Treatment System during the report period.

2.4 Annual Land Use Census Changes During 2022, no garden greater than 500 ft2 was located within 5 miles of Site. Per Technical Specification 3.12.2 listed in the ODCM, C-200, Page 64, broad leaf vegetation (Brazilian Pepper) sampling was performed at the Site Boundary in the 2 sectors (WNW and NW) with the highest predicted D/Qs in lieu of the garden census. Controls for broad leaf vegetation sampling per ODCM Table 3.12-1, Part 4.b, including collection and analysis of control samples, were followed.

2.5 Effluent Monitoring System Inoperability No effluent monitors were out of service for greater than 30 days during the report period.

2.6 Offsite Dose Calculation Manual Changes Incorporated PCR 2362195 to include additional Effluent Radiation Monitors into Table 4.3-9, Radioactive Gaseous Effluent Monitoring Instrumentation, revised ACTION 51 to the action statement as written previously in the Technical Specifications, Table 3.3-6 of Unit 1 Technical Specifications, Amendment 206, and revised ACTION 55 in Table 3.3-13 due to addition of the 3.b) Noble Gas Activity Monitor High Range for Unit 2 in C-200 Revision

50.

2.7 Process Control Program Changes No changes were made to the Process Control Program during the report period.

2.8 Corrections to Previous Reports No corrections to previous reports were made during this report period.

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2.9 Other AR 02419243 RIM-26-90 WRGM Indication has turned Magenta Unit: 02 RIM-26-90 WRGM Indication has turned magenta and has no readings per Table 3.3-13 and Action 47. Established DS-30 for Chemistry to obtain grab samples every 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months and isotopic analysis within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

South Pond Settling Basin Release Summary Fourteen batch releases from the South Settling Basin to the Intake Canal to lower the water level due to periods of higher than normal rainfall occurred during the report period. All releases were analyzed according to the ODCM and Site procedural requirements and were found to have no detectable gamma, tritium, alpha, or hard-to-detect isotopes. The releases are summarized below.

2022 South Pond Releases Sample Date Permit #

Volume (Gallons)

Quarter 1

1/20/22 L-22-011-B 2,998,910 Q1 2

3/11/22 L-22-014-B 4,268,084 3

4/29/22 L-22-017-B 3,793,081 Q2 4

6/2/22 L-22-021-B 10,765,826 5

6/10/22 L-22-031-B 1,838,911 6

7/19/22 L-22-032-B 6,885,706 Q3 7

8/9/22 L-22-045-B 1,930,812 8

9/10/22 L-22-055-B 3,547,049 9

9/19/22 L-22-069-B 4,976,574 10 9/26/22 L-22-070-B 5,408,411 11 10/19/22 L-22-072-B 6,328,081 Q4 12 11/1/22 L-22-076-B 2,152,476 13 11/8/22 L-22-077-B 2,439,148 14 11/28/22 L-22-079-B 3,402,585 7

2.10 Groundwater Protection Program No limits were exceeded for the St. Lucie Nuclear Site Groundwater Protection Program during the report period. The tritium results for the report period are contained in the table below.

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2022 St. Lucie Nuclear Plant Groundwater Protection Program Tritium Results (pCi/L)

Well ID Jan Feb March April May June Ju ly Aug Sept Oct Nov De c I lMWOOl

<262 1MW002

<244 1MW003

<239 1MW004

<182 1MW005 350 1880

<232 2MW001 199

<211

<233 2MW002 244 1260

<229 2MW003 272 355 401 2MW004

<183

<204

<231 MW-15 352 382 234 MW-16

<241

<219 337 MW-17 2630 2590 2370 4150 2040 4350 4360 MW*l8d 3120 2720 2440 2230 2130 1560 1500 MW-19

<179

<218

<236 MW*22d

<248

<216

<235 MW-26

<244

<211

<226 MW-3 513 262 359 MW-30

<181

<211

<229 MW-31 324 233

<237 MW-32 279

<197 252 MW-33 499 501 617 MW-4

<182

<227

<234 MW-5

<245

<216

<238 MW-6 7300 2670 2990 4820 7520 1470 5320 7870 245 1300 3600 MW-7

<263

<213

<224 NB-MW-1

<261 NB-MW-2

<261 PSLED-2

<258 RW-2 196 225

<231 RW-4

<242

<213

<236 RW-5

<248

<208

<226 S-MW-1

<249 S-MW-11

<259 S-MW-15D

<245 S-MW-16

<262 S-MW-16i

<255 S-MW-17 308 S-MW-18

<259 S-MW-19

<246 S-MW-4

<249 S-MW-6

<260 S-MW-7A

<261

Monday, February 27, 2023 2:30:33PM Florida Power & Light St. Lucie Power Plant Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Reg. Guide 1.21, Table 5A and 5B - Liquid and Gas Batch Release Summary 2nd Quarter 3rd Quarter 1st Quarter 4th Quarter Year Totals Units A. Liquid Batch Release Totals

1. Number of Batch Releases 14 9

37 17 77

2. Total duration of batch releases 2.42E+04 3.03E+04 5.89E+04 4.02E+04 1.54E+05 min

3. Maximum batch release duration 8.67E+03 1.01E+04 7.77E+03 1.00E+04 1.01E+04 min

4. Average batch release duration 1.73E+03 3.37E+03 1.59E+03 2.36E+03 2.00E+03 min

5. Minimum batch release duration 5.52E+02 6.07E+02 4.18E+02 6.25E+02 4.18E+02 min 2nd Quarter 3rd Quarter 1st Quarter 4th Quarter Year Totals Units B. Gas Batch Release Totals

1. Number of Batch Releases 64 59 63 48 234

2. Total duration of batch releases 2.73E+04 1.85E+04 4.74E+04 1.51E+04 1.08E+05 min

3. Maximum batch release duration 3.86E+03 6.00E+02 9.86E+03 1.83E+03 9.86E+03 min

4. Average batch release duration 4.26E+02 3.13E+02 7.53E+02 3.15E+02 4.63E+02 min

5. Minimum batch release duration 1.80E+01 3.00E+01 1.90E+01 2.60E+01 1.80E+01 min User: admin

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Monday, February 27, 2023 2:33:58PM Florida Power & Light St. Lucie Power Plant Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Reg. Guide 1.21, Table 6A and 6B - Liquid and Gas Abnormal Release Summary 2nd Quarter 3rd Quarter 1st Quarter 4th Quarter Year Totals Units A. Liquid Abnormal Release Totals

1. Number of Abnormal Releases 0

0 0

2. Total Activity of abnormal releases 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci 2nd Quarter 3rd Quarter 1st Quarter 4th Quarter Year Totals Units B. Gas Abnormal Release Totals

1. Number of Abnormal Releases 0

0 0

1 1

2. Total Activity of abnormal releases 0.00E+00 0.00E+00 0.00E+00 9.59E-03 9.59E-03 Ci User: admin

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Page 1 of 1 Monday, February 27, 2023 2:42:28PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 1A, Gaseous Effluents - Summation of All Releases Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Gases 2.22E+01 Ci

1. Total Release 7.45E+01 7.13E+00 7.39E-01 1.05E+02

2. Average Release Rate for Period 2.85E+00 uCi/s 9.48E+00 8.98E-01 9.29E-02 3.32E+00

3. Percent of Limit B. Iodines and Halogens 2.16E-06 Ci

1. Total Release 0.00E+00 2.42E-05 2.05E-07 2.66E-05

2. Average Release Rate for Period 2.78E-07 uCi/s 0.00E+00 3.05E-06 2.57E-08 8.43E-07

3. Percent of Limit C. Particulates 0.00E+00 Ci

1. Total Release 3.13E-07 4.10E-07 2.59E-06 3.32E-06

2. Average Release Rate for Period 0.00E+00 uCi/s 3.98E-08 5.15E-08 3.26E-07 1.05E-07

3. Percent of Limit D. Tritium 6.32E+00 Ci

1. Total Release 9.17E-01 3.86E+00 4.11E-01 1.15E+01

2. Average Release Rate for Period 8.12E-01 uCi/s 1.17E-01 4.86E-01 5.17E-02 3.65E-01

3. Percent of Limit E. Gross Alpha 2.78E-08 Ci

1. Total Release 0.00E+00 1.50E-09 1.97E-08 4.90E-08 F. Carbon-14 4.98E+00 Ci

1. Total Release 5.48E+00 4.67E+00 5.40E+00 2.05E+01

2. Average Release Rate for Period 6.41E-01 uCi/s 6.97E-01 5.87E-01 6.80E-01 6.51E-01

3. Percent of Limit User: admin

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Page 1 of 1 Monday, February 27, 2023 2:36:37PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 1A, Gaseous Effluents - Summation of All Releases Unit: PSL1 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Gases 2.05E+01 Ci

1. Total Release 3.10E-01 4.17E+00 2.30E-01 2.52E+01

2. Average Release Rate for Period 2.64E+00 uCi/s 3.95E-02 5.24E-01 2.89E-02 7.99E-01

3. Percent of Limit B. Iodines and Halogens 1.21E-06 Ci

1. Total Release 0.00E+00 2.42E-05 2.05E-07 2.56E-05

2. Average Release Rate for Period 1.56E-07 uCi/s 0.00E+00 3.05E-06 2.57E-08 8.13E-07

3. Percent of Limit C. Particulates 0.00E+00 Ci

1. Total Release 3.13E-07 4.10E-07 0.00E+00 7.23E-07

2. Average Release Rate for Period 0.00E+00 uCi/s 3.98E-08 5.15E-08 0.00E+00 2.29E-08

3. Percent of Limit D. Tritium 2.92E+00 Ci

1. Total Release 6.65E-01 3.55E+00 1.29E-01 7.26E+00

2. Average Release Rate for Period 3.75E-01 uCi/s 8.46E-02 4.47E-01 1.62E-02 2.30E-01

3. Percent of Limit E. Gross Alpha 2.21E-08 Ci

1. Total Release 0.00E+00 1.50E-09 1.66E-08 4.03E-08 F. Carbon-14 2.76E+00 Ci

1. Total Release 2.80E+00 1.96E+00 2.69E+00 1.02E+01

2. Average Release Rate for Period 3.55E-01 uCi/s 3.57E-01 2.46E-01 3.39E-01 3.24E-01

3. Percent of Limit User: admin

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Page 1 of 1 Monday, February 27, 2023 2:40:02PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 1A, Gaseous Effluents - Summation of All Releases Unit: PSL2 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Gases 1.67E+00 Ci

1. Total Release 7.42E+01 2.97E+00 5.09E-01 7.94E+01

2. Average Release Rate for Period 2.15E-01 uCi/s 9.44E+00 3.73E-01 6.40E-02 2.52E+00

3. Percent of Limit B. Iodines and Halogens 9.52E-07 Ci

1. Total Release 0.00E+00 0.00E+00 0.00E+00 9.52E-07

2. Average Release Rate for Period 1.22E-07 uCi/s 0.00E+00 0.00E+00 0.00E+00 3.02E-08

3. Percent of Limit C. Particulates 0.00E+00 Ci

1. Total Release 0.00E+00 0.00E+00 2.59E-06 2.59E-06

2. Average Release Rate for Period 0.00E+00 uCi/s 0.00E+00 0.00E+00 3.26E-07 8.22E-08

3. Percent of Limit D. Tritium 3.40E+00 Ci

1. Total Release 2.52E-01 3.13E-01 2.82E-01 4.24E+00

2. Average Release Rate for Period 4.37E-01 uCi/s 3.20E-02 3.94E-02 3.54E-02 1.35E-01

3. Percent of Limit E. Gross Alpha 5.66E-09 Ci

1. Total Release 0.00E+00 0.00E+00 3.13E-09 8.79E-09 F. Carbon-14 2.23E+00 Ci

1. Total Release 2.67E+00 2.71E+00 2.71E+00 1.03E+01

2. Average Release Rate for Period 2.86E-01 uCi/s 3.40E-01 3.41E-01 3.41E-01 3.27E-01

3. Percent of Limit User: admin

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Page 1 of 4 Monday, February 27, 2023 2:45:13PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Continuous Mode Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Continuous Mode Kr-85m 1.76E-01 0.00E+00 0.00E+00 1.94E-01 3.70E-01 Ci Xe-127 0.00E+00 0.00E+00 2.10E-01 0.00E+00 2.10E-01 Ci Xe-131m 0.00E+00 0.00E+00 1.08E+00 0.00E+00 1.08E+00 Ci Xe-135 0.00E+00 0.00E+00 2.11E+00 0.00E+00 2.11E+00 Ci Xe-133m 0.00E+00 1.28E+00 0.00E+00 0.00E+00 1.28E+00 Ci Xe-133 1.76E+00 0.00E+00 2.87E+00 0.00E+00 4.63E+00 Ci Xe-137 1.64E+01 0.00E+00 0.00E+00 0.00E+00 1.64E+01 Ci Xe-138 2.94E+00 7.27E+01 0.00E+00 0.00E+00 7.56E+01 Ci 7.40E+01 6.27E+00 1.94E-01 1.02E+02 Total For Period 2.12E+01 Ci A. Fission and Activation Gases I-131 2.16E-06 0.00E+00 3.52E-06 2.05E-07 5.88E-06 Ci I-133 0.00E+00 0.00E+00 2.06E-05 0.00E+00 2.06E-05 Ci 0.00E+00 2.41E-05 2.05E-07 2.65E-05 Total For Period 2.16E-06 Ci B. Iodines and Halogens Co-57 0.00E+00 3.13E-07 0.00E+00 0.00E+00 3.13E-07 Ci Co-58 0.00E+00 0.00E+00 0.00E+00 1.76E-06 1.76E-06 Ci Nb-95 0.00E+00 0.00E+00 2.76E-07 0.00E+00 2.76E-07 Ci Ru-103 0.00E+00 0.00E+00 0.00E+00 8.28E-07 8.28E-07 Ci Ce-144 0.00E+00 0.00E+00 4.39E-08 0.00E+00 4.39E-08 Ci 3.13E-07 3.20E-07 2.59E-06 3.23E-06 Total For Period 0.00E+00 Ci C. Particulates If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

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Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:45 Page 2 of 4 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Continuous Mode Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Continuous Mode H-3 2.58E+00 0.00E+00 0.00E+00 0.00E+00 2.58E+00 Ci D. Tritium G-Alpha 2.64E-08 0.00E+00 0.00E+00 1.97E-08 4.62E-08 Ci E. Gross Alpha C-14 4.98E+00 5.48E+00 4.67E+00 5.40E+00 2.05E+01 Ci F. Carbon-14 If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

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[Server]: PSLSA137 [Database]: NEPSOEMP 15

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:45 Page 3 of 4 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Batch Mode Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode Ar-41 5.29E-01 5.05E-01 4.93E-01 4.07E-01 1.93E+00 Ci Kr-85m 4.64E-05 3.18E-05 1.86E-04 6.72E-06 2.71E-04 Ci Kr-87 1.68E-04 0.00E+00 1.46E-04 0.00E+00 3.14E-04 Ci Kr-88 8.69E-05 0.00E+00 1.79E-04 1.85E-04 4.51E-04 Ci Kr-89 0.00E+00 0.00E+00 1.10E-02 0.00E+00 1.10E-02 Ci Xe-131m 0.00E+00 0.00E+00 2.44E-04 0.00E+00 2.44E-04 Ci Xe-135 2.08E-03 2.52E-03 6.69E-03 4.71E-03 1.60E-02 Ci Xe-133m 7.75E-04 0.00E+00 6.92E-04 4.98E-04 1.97E-03 Ci Xe-133 4.01E-01 6.34E-02 3.51E-01 1.32E-01 9.48E-01 Ci Xe-135m 0.00E+00 0.00E+00 2.79E-04 3.76E-04 6.55E-04 Ci Xe-138 3.19E-04 0.00E+00 0.00E+00 0.00E+00 3.19E-04 Ci 5.70E-01 8.63E-01 5.45E-01 2.91E+00 Total For Period 9.34E-01 Ci A. Fission and Activation Gases I-131 0.00E+00 0.00E+00 7.96E-08 0.00E+00 7.96E-08 Ci B. Iodines and Halogens Co-60 0.00E+00 0.00E+00 8.94E-08 0.00E+00 8.94E-08 Ci C. Particulates H-3 3.74E+00 9.17E-01 3.86E+00 4.11E-01 8.93E+00 Ci D. Tritium G-Alpha 1.36E-09 0.00E+00 1.50E-09 0.00E+00 2.87E-09 Ci E. Gross Alpha If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 16

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:45 Page 4 of 4 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Batch Mode Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci F. Carbon-14 If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 17

Page 1 of 3 Monday, February 27, 2023 2:43:02PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Continuous Mode Unit: PSL1 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Continuous Mode Xe-131m 0.00E+00 0.00E+00 1.08E+00 0.00E+00 1.08E+00 Ci Xe-135 0.00E+00 0.00E+00 1.04E+00 0.00E+00 1.04E+00 Ci Xe-137 1.64E+01 0.00E+00 0.00E+00 0.00E+00 1.64E+01 Ci Xe-133 8.84E-01 0.00E+00 1.48E+00 0.00E+00 2.36E+00 Ci Xe-138 2.94E+00 0.00E+00 0.00E+00 0.00E+00 2.94E+00 Ci 0.00E+00 3.59E+00 0.00E+00 2.38E+01 Total For Period 2.02E+01 Ci A. Fission and Activation Gases I-131 1.21E-06 0.00E+00 3.52E-06 2.05E-07 4.93E-06 Ci I-133 0.00E+00 0.00E+00 2.06E-05 0.00E+00 2.06E-05 Ci 0.00E+00 2.41E-05 2.05E-07 2.56E-05 Total For Period 1.21E-06 Ci B. Iodines and Halogens Co-57 0.00E+00 3.13E-07 0.00E+00 0.00E+00 3.13E-07 Ci Nb-95 0.00E+00 0.00E+00 2.76E-07 0.00E+00 2.76E-07 Ci Ce-144 0.00E+00 0.00E+00 4.39E-08 0.00E+00 4.39E-08 Ci 3.13E-07 3.20E-07 0.00E+00 6.33E-07 Total For Period 0.00E+00 Ci C. Particulates H-3 2.58E+00 0.00E+00 0.00E+00 0.00E+00 2.58E+00 Ci D. Tritium If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 18

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:43 Page 2 of 3 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Continuous Mode Unit: PSL1 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Continuous Mode G-Alpha 2.21E-08 0.00E+00 0.00E+00 1.66E-08 3.88E-08 Ci E. Gross Alpha C-14 2.76E+00 2.80E+00 1.96E+00 2.69E+00 1.02E+01 Ci F. Carbon-14 If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 19

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:43 Page 3 of 3 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Batch Mode Unit: PSL1 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode Ar-41 2.96E-01 2.90E-01 2.67E-01 1.79E-01 1.03E+00 Ci Kr-85m 0.00E+00 0.00E+00 1.86E-04 6.72E-06 1.92E-04 Ci Kr-87 0.00E+00 0.00E+00 1.46E-04 0.00E+00 1.46E-04 Ci Kr-88 8.69E-05 0.00E+00 1.79E-04 0.00E+00 2.66E-04 Ci Xe-131m 0.00E+00 0.00E+00 2.44E-04 0.00E+00 2.44E-04 Ci Xe-135 1.74E-04 1.18E-04 5.22E-03 1.33E-03 6.85E-03 Ci Xe-133m 5.28E-04 0.00E+00 6.92E-04 4.98E-04 1.72E-03 Ci Xe-133 1.99E-02 2.02E-02 3.02E-01 4.90E-02 3.91E-01 Ci Xe-135m 0.00E+00 0.00E+00 0.00E+00 3.76E-04 3.76E-04 Ci 3.10E-01 5.75E-01 2.30E-01 1.43E+00 Total For Period 3.16E-01 Ci A. Fission and Activation Gases I-131 0.00E+00 0.00E+00 7.96E-08 0.00E+00 7.96E-08 Ci B. Iodines and Halogens Co-60 0.00E+00 0.00E+00 8.94E-08 0.00E+00 8.94E-08 Ci C. Particulates H-3 3.42E-01 6.65E-01 3.55E+00 1.29E-01 4.69E+00 Ci D. Tritium G-Alpha 0.00E+00 0.00E+00 1.50E-09 0.00E+00 1.50E-09 Ci E. Gross Alpha No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci F. Carbon-14 If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 20

Page 1 of 4 Monday, February 27, 2023 2:44:30PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Continuous Mode Unit: PSL2 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Continuous Mode Kr-85m 1.76E-01 0.00E+00 0.00E+00 1.94E-01 3.70E-01 Ci Xe-127 0.00E+00 0.00E+00 2.10E-01 0.00E+00 2.10E-01 Ci Xe-135 0.00E+00 0.00E+00 1.08E+00 0.00E+00 1.08E+00 Ci Xe-133m 0.00E+00 1.28E+00 0.00E+00 0.00E+00 1.28E+00 Ci Xe-133 8.77E-01 0.00E+00 1.39E+00 0.00E+00 2.27E+00 Ci Xe-138 0.00E+00 7.27E+01 0.00E+00 0.00E+00 7.27E+01 Ci 7.40E+01 2.68E+00 1.94E-01 7.79E+01 Total For Period 1.05E+00 Ci A. Fission and Activation Gases I-131 9.52E-07 0.00E+00 0.00E+00 0.00E+00 9.52E-07 Ci B. Iodines and Halogens Co-58 0.00E+00 0.00E+00 0.00E+00 1.76E-06 1.76E-06 Ci Ru-103 0.00E+00 0.00E+00 0.00E+00 8.28E-07 8.28E-07 Ci 0.00E+00 0.00E+00 2.59E-06 2.59E-06 Total For Period 0.00E+00 Ci C. Particulates No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci D. Tritium G-Alpha 4.29E-09 0.00E+00 0.00E+00 3.13E-09 7.42E-09 Ci E. Gross Alpha If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 21

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:44 Page 2 of 4 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Continuous Mode Unit: PSL2 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Continuous Mode C-14 2.23E+00 2.67E+00 2.71E+00 2.71E+00 1.03E+01 Ci F. Carbon-14 If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 22

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:44 Page 3 of 4 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Batch Mode Unit: PSL2 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode Ar-41 2.34E-01 2.15E-01 2.26E-01 2.28E-01 9.02E-01 Ci Kr-85m 4.64E-05 3.18E-05 0.00E+00 0.00E+00 7.82E-05 Ci Kr-87 1.68E-04 0.00E+00 0.00E+00 0.00E+00 1.68E-04 Ci Kr-88 0.00E+00 0.00E+00 0.00E+00 1.85E-04 1.85E-04 Ci Kr-89 0.00E+00 0.00E+00 1.10E-02 0.00E+00 1.10E-02 Ci Xe-135 1.91E-03 2.40E-03 1.47E-03 3.37E-03 9.14E-03 Ci Xe-133m 2.47E-04 0.00E+00 0.00E+00 0.00E+00 2.47E-04 Ci Xe-133 3.81E-01 4.32E-02 4.92E-02 8.34E-02 5.57E-01 Ci Xe-135m 0.00E+00 0.00E+00 2.79E-04 0.00E+00 2.79E-04 Ci Xe-138 3.19E-04 0.00E+00 0.00E+00 0.00E+00 3.19E-04 Ci 2.60E-01 2.88E-01 3.15E-01 1.48E+00 Total For Period 6.18E-01 Ci A. Fission and Activation Gases No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci B. Iodines and Halogens No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci C. Particulates H-3 3.40E+00 2.52E-01 3.13E-01 2.82E-01 4.24E+00 Ci D. Tritium G-Alpha 1.36E-09 0.00E+00 0.00E+00 0.00E+00 1.36E-09 Ci E. Gross Alpha If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 23

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:44 Page 4 of 4 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Batch Mode Unit: PSL2 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci F. Carbon-14 If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 24

Page 1 of 1 Monday, February 27, 2023 2:47:45PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 2A, Liquid Effluents - Summation of All Releases Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Products 1.12E-02 Ci

1. Total Release 5.18E-03 2.04E-02 1.02E-02 4.70E-02

2. Average Concentration 1.57E-10 uCi/mL 4.52E-11 1.16E-10 6.65E-11 9.12E-11

3. Percent of Limit B. Tritium 2.49E+02 Ci

1. Total Release 1.61E+02 2.88E+02 5.71E+01 7.55E+02

2. Average Concentration 3.51E-06 uCi/mL 1.40E-06 1.64E-06 3.71E-07 1.47E-06

3. Percent of Limit C. Dissolved and Entrained Gases 7.18E-04 Ci

1. Total Release 3.11E-04 1.14E-02 1.36E-03 1.38E-02

2. Average Concentration 1.01E-11 uCi/mL 2.72E-12 6.52E-11 8.85E-12 2.69E-11

3. Percent of Limit D. Gross Alpha Activity 0.00E+00 Ci

1. Total Release 0.00E+00 0.00E+00 0.00E+00 0.00E+00

2. Average Concentration 0.00E+00 uCi/mL 0.00E+00 0.00E+00 0.00E+00 0.00E+00 E. Primary Liquid Release Volume 2.87E+07 Liters

1. Total Release 8.18E+07 7.03E+07 5.56E+07 2.36E+08 F. Dilution Volume 7.09E+10 Liters

1. Total Release 1.15E+11 1.75E+11 1.54E+11 5.15E+11 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 25

Page 1 of 1 Monday, February 27, 2023 2:46:14PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 2A, Liquid Effluents - Summation of All Releases Unit: PSL1 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Products 5.58E-03 Ci

1. Total Release 2.59E-03 1.02E-02 5.12E-03 2.35E-02

2. Average Concentration 1.57E-10 uCi/mL 4.52E-11 1.16E-10 6.65E-11 9.12E-11

3. Percent of Limit B. Tritium 1.24E+02 Ci

1. Total Release 8.05E+01 1.44E+02 2.86E+01 3.77E+02

2. Average Concentration 3.51E-06 uCi/mL 1.40E-06 1.64E-06 3.71E-07 1.47E-06

3. Percent of Limit C. Dissolved and Entrained Gases 3.59E-04 Ci

1. Total Release 1.56E-04 5.72E-03 6.82E-04 6.92E-03

2. Average Concentration 1.01E-11 uCi/mL 2.72E-12 6.52E-11 8.85E-12 2.69E-11

3. Percent of Limit D. Gross Alpha Activity 0.00E+00 Ci

1. Total Release 0.00E+00 0.00E+00 0.00E+00 0.00E+00

2. Average Concentration 0.00E+00 uCi/mL 0.00E+00 0.00E+00 0.00E+00 0.00E+00 E. Primary Liquid Release Volume 1.44E+07 Liters

1. Total Release 4.09E+07 3.52E+07 2.78E+07 1.18E+08 F. Dilution Volume 3.55E+10 Liters

1. Total Release 5.73E+10 8.77E+10 7.71E+10 2.58E+11 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 26

Page 1 of 1 Monday, February 27, 2023 2:47:01PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 2A, Liquid Effluents - Summation of All Releases Unit: PSL2 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Products 5.58E-03 Ci

1. Total Release 2.59E-03 1.02E-02 5.12E-03 2.35E-02

2. Average Concentration 1.57E-10 uCi/mL 4.52E-11 1.16E-10 6.65E-11 9.12E-11

3. Percent of Limit B. Tritium 1.24E+02 Ci

1. Total Release 8.05E+01 1.44E+02 2.86E+01 3.77E+02

2. Average Concentration 3.51E-06 uCi/mL 1.40E-06 1.64E-06 3.71E-07 1.47E-06

3. Percent of Limit C. Dissolved and Entrained Gases 3.59E-04 Ci

1. Total Release 1.56E-04 5.72E-03 6.82E-04 6.92E-03

2. Average Concentration 1.01E-11 uCi/mL 2.72E-12 6.52E-11 8.85E-12 2.69E-11

3. Percent of Limit D. Gross Alpha Activity 0.00E+00 Ci

1. Total Release 0.00E+00 0.00E+00 0.00E+00 0.00E+00

2. Average Concentration 0.00E+00 uCi/mL 0.00E+00 0.00E+00 0.00E+00 0.00E+00 E. Primary Liquid Release Volume 1.44E+07 Liters

1. Total Release 4.09E+07 3.52E+07 2.78E+07 1.18E+08 F. Dilution Volume 3.55E+10 Liters

1. Total Release 5.73E+10 8.77E+10 7.71E+10 2.58E+11 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 27

Page 1 of 3 Monday, February 27, 2023 2:52:35PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 2B, Liquid Effluents - Continuous Mode Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Continuous Mode No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci A. Fission and Activation Products No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci B. Tritium No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci C. Dissolved and Entrained Gases No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci D. Gross Alpha Activity If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 28

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:52 Page 2 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode C-14 2.54E-03 2.50E-03 4.69E-03 7.41E-03 1.71E-02 Ci Na-24 0.00E+00 0.00E+00 7.35E-06 0.00E+00 7.35E-06 Ci Be-7 4.29E-05 4.44E-05 0.00E+00 0.00E+00 8.73E-05 Ci Cr-51 5.82E-04 0.00E+00 1.75E-03 2.06E-05 2.35E-03 Ci Mn-54 7.66E-05 0.00E+00 9.37E-05 7.06E-05 2.41E-04 Ci Fe-59 1.64E-05 0.00E+00 0.00E+00 0.00E+00 1.64E-05 Ci Co-57 0.00E+00 0.00E+00 0.00E+00 1.79E-06 1.79E-06 Ci Co-58 2.54E-03 6.93E-04 2.43E-03 5.06E-04 6.17E-03 Ci Co-60 3.30E-03 8.99E-04 4.41E-03 1.32E-03 9.92E-03 Ci Ni-63 6.27E-04 2.42E-04 0.00E+00 0.00E+00 8.69E-04 Ci Zn-65 2.63E-05 1.89E-05 1.36E-05 0.00E+00 5.88E-05 Ci Zr-95 1.99E-04 1.02E-05 2.88E-04 2.84E-05 5.26E-04 Ci Nb-95 3.33E-04 2.80E-05 4.91E-04 1.05E-04 9.57E-04 Ci Nb-97 4.43E-04 1.17E-04 1.02E-03 2.55E-04 1.84E-03 Ci Ag-110m 4.07E-04 5.75E-05 8.27E-04 2.15E-04 1.51E-03 Ci Sn-113 0.00E+00 0.00E+00 0.00E+00 3.08E-06 3.08E-06 Ci Sb-124 0.00E+00 1.51E-04 1.22E-03 3.58E-05 1.41E-03 Ci Sb-125 0.00E+00 4.04E-04 3.03E-03 7.17E-05 3.51E-03 Ci Te-129m 0.00E+00 0.00E+00 0.00E+00 8.19E-05 8.19E-05 Ci Te-129 0.00E+00 0.00E+00 2.98E-05 0.00E+00 2.98E-05 Ci I-133 0.00E+00 0.00E+00 3.44E-06 0.00E+00 3.44E-06 Ci I-135 9.05E-06 0.00E+00 0.00E+00 0.00E+00 9.05E-06 Ci Cs-136 0.00E+00 0.00E+00 8.46E-06 0.00E+00 8.46E-06 Ci Cs-137 0.00E+00 0.00E+00 3.94E-05 1.17E-04 1.56E-04 Ci La-140 7.72E-06 0.00E+00 7.28E-06 0.00E+00 1.50E-05 Ci W-187 2.01E-05 1.74E-05 0.00E+00 5.71E-06 4.32E-05 Ci A. Fission and Activation Products If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 29

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:52 Page 3 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: Site Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode 5.18E-03 2.04E-02 1.02E-02 4.70E-02 Total For Period 1.12E-02 Ci H-3 2.49E+02 1.61E+02 2.88E+02 5.71E+01 7.55E+02 Ci B. Tritium Ar-41 3.12E-06 0.00E+00 1.19E-05 0.00E+00 1.50E-05 Ci Xe-133m 0.00E+00 0.00E+00 8.53E-05 0.00E+00 8.53E-05 Ci Xe-135 0.00E+00 0.00E+00 4.94E-05 0.00E+00 4.94E-05 Ci Xe-133 7.15E-04 3.11E-04 1.13E-02 1.36E-03 1.37E-02 Ci 3.11E-04 1.14E-02 1.36E-03 1.38E-02 Total For Period 7.18E-04 Ci C. Dissolved and Entrained Gases No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci D. Gross Alpha Activity If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 30

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:48 Page 2 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: PSL1 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode C-14 1.27E-03 1.25E-03 2.35E-03 3.70E-03 8.57E-03 Ci Na-24 0.00E+00 0.00E+00 3.68E-06 0.00E+00 3.68E-06 Ci Be-7 2.14E-05 2.22E-05 0.00E+00 0.00E+00 4.36E-05 Ci Cr-51 2.91E-04 0.00E+00 8.74E-04 1.03E-05 1.18E-03 Ci Mn-54 3.83E-05 0.00E+00 4.68E-05 3.53E-05 1.20E-04 Ci Fe-59 8.19E-06 0.00E+00 0.00E+00 0.00E+00 8.19E-06 Ci Co-57 0.00E+00 0.00E+00 0.00E+00 8.93E-07 8.93E-07 Ci Co-58 1.27E-03 3.46E-04 1.21E-03 2.53E-04 3.08E-03 Ci Co-60 1.65E-03 4.49E-04 2.20E-03 6.58E-04 4.96E-03 Ci Ni-63 3.14E-04 1.21E-04 0.00E+00 0.00E+00 4.35E-04 Ci Zn-65 1.32E-05 9.43E-06 6.81E-06 0.00E+00 2.94E-05 Ci Zr-95 9.97E-05 5.09E-06 1.44E-04 1.42E-05 2.63E-04 Ci Nb-95 1.66E-04 1.40E-05 2.45E-04 5.25E-05 4.78E-04 Ci Nb-97 2.21E-04 5.86E-05 5.11E-04 1.27E-04 9.18E-04 Ci Ag-110m 2.03E-04 2.87E-05 4.13E-04 1.08E-04 7.53E-04 Ci Sn-113 0.00E+00 0.00E+00 0.00E+00 1.54E-06 1.54E-06 Ci Sb-124 0.00E+00 7.53E-05 6.12E-04 1.79E-05 7.05E-04 Ci Sb-125 0.00E+00 2.02E-04 1.52E-03 3.59E-05 1.75E-03 Ci Te-129m 0.00E+00 0.00E+00 0.00E+00 4.10E-05 4.10E-05 Ci Te-129 0.00E+00 0.00E+00 1.49E-05 0.00E+00 1.49E-05 Ci I-133 0.00E+00 0.00E+00 1.72E-06 0.00E+00 1.72E-06 Ci I-135 4.53E-06 0.00E+00 0.00E+00 0.00E+00 4.53E-06 Ci Cs-136 0.00E+00 0.00E+00 4.23E-06 0.00E+00 4.23E-06 Ci Cs-137 0.00E+00 0.00E+00 1.97E-05 5.85E-05 7.81E-05 Ci La-140 3.86E-06 0.00E+00 3.64E-06 0.00E+00 7.50E-06 Ci W-187 1.00E-05 8.69E-06 0.00E+00 2.86E-06 2.16E-05 Ci A. Fission and Activation Products If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 31

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:48 Page 3 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: PSL1 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode 2.59E-03 1.02E-02 5.12E-03 2.35E-02 Total For Period 5.58E-03 Ci H-3 1.24E+02 8.05E+01 1.44E+02 2.86E+01 3.77E+02 Ci B. Tritium Ar-41 1.56E-06 0.00E+00 5.93E-06 0.00E+00 7.49E-06 Ci Xe-135 0.00E+00 0.00E+00 2.47E-05 0.00E+00 2.47E-05 Ci Xe-133m 0.00E+00 0.00E+00 4.26E-05 0.00E+00 4.26E-05 Ci Xe-133 3.58E-04 1.56E-04 5.65E-03 6.82E-04 6.84E-03 Ci 1.56E-04 5.72E-03 6.82E-04 6.92E-03 Total For Period 3.59E-04 Ci C. Dissolved and Entrained Gases No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci D. Gross Alpha Activity If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 32

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:49 Page 2 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: PSL2 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode C-14 1.27E-03 1.25E-03 2.35E-03 3.70E-03 8.57E-03 Ci Na-24 0.00E+00 0.00E+00 3.68E-06 0.00E+00 3.68E-06 Ci Be-7 2.14E-05 2.22E-05 0.00E+00 0.00E+00 4.36E-05 Ci Cr-51 2.91E-04 0.00E+00 8.74E-04 1.03E-05 1.18E-03 Ci Mn-54 3.83E-05 0.00E+00 4.68E-05 3.53E-05 1.20E-04 Ci Fe-59 8.19E-06 0.00E+00 0.00E+00 0.00E+00 8.19E-06 Ci Co-57 0.00E+00 0.00E+00 0.00E+00 8.93E-07 8.93E-07 Ci Co-58 1.27E-03 3.46E-04 1.21E-03 2.53E-04 3.08E-03 Ci Co-60 1.65E-03 4.49E-04 2.20E-03 6.58E-04 4.96E-03 Ci Ni-63 3.14E-04 1.21E-04 0.00E+00 0.00E+00 4.35E-04 Ci Zn-65 1.32E-05 9.43E-06 6.81E-06 0.00E+00 2.94E-05 Ci Zr-95 9.97E-05 5.09E-06 1.44E-04 1.42E-05 2.63E-04 Ci Nb-95 1.66E-04 1.40E-05 2.45E-04 5.25E-05 4.78E-04 Ci Nb-97 2.21E-04 5.86E-05 5.11E-04 1.27E-04 9.18E-04 Ci Ag-110m 2.03E-04 2.87E-05 4.13E-04 1.08E-04 7.53E-04 Ci Sn-113 0.00E+00 0.00E+00 0.00E+00 1.54E-06 1.54E-06 Ci Sb-124 0.00E+00 7.53E-05 6.12E-04 1.79E-05 7.05E-04 Ci Sb-125 0.00E+00 2.02E-04 1.52E-03 3.59E-05 1.75E-03 Ci Te-129m 0.00E+00 0.00E+00 0.00E+00 4.10E-05 4.10E-05 Ci Te-129 0.00E+00 0.00E+00 1.49E-05 0.00E+00 1.49E-05 Ci I-133 0.00E+00 0.00E+00 1.72E-06 0.00E+00 1.72E-06 Ci I-135 4.53E-06 0.00E+00 0.00E+00 0.00E+00 4.53E-06 Ci Cs-136 0.00E+00 0.00E+00 4.23E-06 0.00E+00 4.23E-06 Ci Cs-137 0.00E+00 0.00E+00 1.97E-05 5.85E-05 7.81E-05 Ci La-140 3.86E-06 0.00E+00 3.64E-06 0.00E+00 7.50E-06 Ci W-187 1.00E-05 8.69E-06 0.00E+00 2.86E-06 2.16E-05 Ci A. Fission and Activation Products If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 33

Florida Power & Light, St. Lucie Power Plant 2/27/2023 14:49 Page 3 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: PSL2 Starting: 1-Jan-2022 Ending: 31-Dec-2022 Nuclides Released 1ST Quarter 2ND Quarter Units 3RD Quarter 4TH Quarter Annual Batch Mode 2.59E-03 1.02E-02 5.12E-03 2.35E-02 Total For Period 5.58E-03 Ci H-3 1.24E+02 8.05E+01 1.44E+02 2.86E+01 3.77E+02 Ci B. Tritium Ar-41 1.56E-06 0.00E+00 5.93E-06 0.00E+00 7.49E-06 Ci Xe-133m 0.00E+00 0.00E+00 4.26E-05 0.00E+00 4.26E-05 Ci Xe-135 0.00E+00 0.00E+00 2.47E-05 0.00E+00 2.47E-05 Ci Xe-133 3.58E-04 1.56E-04 5.65E-03 6.82E-04 6.84E-03 Ci 1.56E-04 5.72E-03 6.82E-04 6.92E-03 Total For Period 3.59E-04 Ci C. Dissolved and Entrained Gases No Nuclides Found 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ci D. Gross Alpha Activity If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 34

3.2 Solid Waste Storage and Shipments 35 WMG Suite 9.5.2 Reg Guide Report Report Date: 02/16/2023 NRC Regulatory Guide 1.21 Report Solid Waste Shipped Offsite for Disposal and Estimates of Major Nuclides by Waste Class and Stream During Period From: 01/01/2022 to 12/31/2022 OtlierWaste Volume B

C Unclassified All 0.O0E+00 *

0.00E+00 Unclassified 0.O0E+00 All *

. 2.25E+01,

Major Nuclides for the Above Table:

H-3, C-14, Cr-51, Fe-55, Co-58, Co-60, Ni-59, Ni-63, Sr-90, Zr-95, Nb-95, Tc-99, 1-129, Cs-137, Ce-144, Pu-238, Am-241, Cm-242, Cm-243 Page 2 of 2

36 WMG Suite 9.5.2 Reg Guide Activity Report Report Date: 02/16/2023 NRC Regulatory Guide 1.21 Activity Report Solid Waste Shipped Offsite for Disposal and Estimates of Major Nuclides by Shipment, Package, and Category During Period From: 01/01/2022 to 12/31/2022 Percent Cutoff: 1.0%

'w aste Class A

_____... _ *-r-Nucude Name I

H-3 I

I Fe-55 I

Nuclide Name Abu~dancej j

l

.....J Activity {Ci):

2.43E-01:

"'"'"""=-""'--"""'~~"""'"""-,_

Abundance!

Activity (Cl)!

.----,..t-* -**W -

I H-3 Fe-55 98.15%1_ _______

2.21 E+o1;

~ ---i---------1.-0-8°---1 3/4,.

2.~~E-01:

jWa:!_~ :~s A.

Nuclide Name Abundance H-3 98.15%

Fe-55

. '7 = /~

Abundanc; f

Activity (Cl)i 1--H_-_3 __________

1-_______

9_a_.1_s_3/4~,[ ___________ 2.21 E+o1 j Fe-55 1.08%

2.43E-01 j 1.08%r 2.21E+011 2.43E-01, I

37 WMG Suite 9.5.2 Reg Guide Report Report Date: 02/16/2023 During Period From: 01/01/2022 to 12/31/2022 Total Shipments by Carrier Number of Shipments per each carrier Number of Shipments **

1 5

Destination l

Energy SoluUons, (DTK) Gallaher Road 628 Gallaher Road r

~

.._ -~~~

I Energy Sollition.s, (DTK) Gallaher Road i

628 Gallaher Road I

Hittman Transport (TN) e ttman Tran~port (TN-)~-~-

-- Hitt~~nTuansport(TN)

EnergySoluti~ns Bear Creek.,,...,,.,...,, * * --

l 1s_6~0

. Bear Creek Road

_ _j

38 WMG Suite 9.5.2 Report date: 2/16/2023 NRC Regulatory Gulde 1.21 Report Shipment and Package Summary Solid Waste Shipped Offsite for Disposal During Period from: 1/1/2022 to 12/31/2022

. EaergySoiatio ns Bear*Creel<

8/10/2022 FPUPSL 22-Energy 051 Solutions, (DTK)

Gallaher Road 8/11/2022 FPUPSL 22-EnergySolutio 050 ns Bear Creek 9/19/2022 FPUPSL 22-Energy 062 Solutions, (DTK)

Gallaher Road 9/19/2022 FPUPSL 22-Energy 063 Solutions, (DTK)

Gallaher Road 9/26/2022 FPUPSL 22-Energy 066 Solutions, (DTK)

Gallaher Road d

ESUU300332 Dry Active Waste ESUU20

~

ESUU30 Page 1 of 2 A

Exempt Quantity

39 WMG Suite 9.5.2 Report date: 2/16/2023 NRC Regulatory Guide 1.21 Report Shipment and Package Summary Solid Waste Shipped Offsite for Disposal During Period from: 1/1/2022 to 12/31/2022 10/12/2022 10/12/2022 10/17/2022 12/12/2022.

FPUPSL 22-EnergySolutio 075 ns Bear Creek FPUPSL 22-EnergySolutio 074 ns Bear Creek FPUPSL 22-EnergySolutio 076 ns Bear Creek FPUPSt: 22-

EnergySob:itio 086

ns Bear Creek Energy Solutions,

.(pTK),

Gallaher Road ESUU200612 ESUU200701 ESUU200730 ESUU200606 ESUU800254 ESWl!J200448 ESUU202048 Page 2 of 2

. 'Dry Active

Waste A

A LSA-11

Page 1 of 1 St. Lucie Power Plant Florida Power & Light Monday, February 27, 2023 3:06:30PM Reg. Guide 1.21, App B, Sec Doses due to Radioiodines, Tritium, and Particulates in Gaseous Releases Starting: 1-Jan-2022 Ending: 31-Dec-2022 Unit: Site Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone 1.28E-03 1.40E-03 1.20E-03 1.38E-03 5.26E-03 Limit Percent of Limit mRem mRem Liver 1.21E-03 1.21E-03 1.10E-03 1.18E-03 4.71E-03 Limit Percent of Limit mRem mRem Total Body 1.21E-03 1.21E-03 1.10E-03 1.18E-03 4.71E-03 Limit Percent of Limit mRem mRem Thyroid 1.21E-03 1.21E-03 1.11E-03 1.18E-03 4.72E-03 Limit Percent of Limit mRem mRem Kidney 2.08E-04 1.75E-04 1.79E-04 1.68E-04 7.30E-04 Limit Percent of Limit mRem mRem Lung 1.21E-03 1.21E-03 1.10E-03 1.18E-03 4.71E-03 Limit Percent of Limit mRem mRem GI-Lli 1.21E-03 1.21E-03 1.10E-03 1.18E-03 4.71E-03 Limit Percent of Limit mRem mRem User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 3.3 Dose Assessments 40

Page 1 of 1 St. Lucie Power Plant Florida Power & Light Monday, February 27, 2023 3:05:13PM Reg. Guide 1.21, App B, Sec Doses due to Radioiodines, Tritium, and Particulates in Gaseous Releases Starting: 1-Jan-2022 Ending: 31-Dec-2022 Unit: PSL1 Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone 7.06E-04 7.18E-04 5.01E-04 6.89E-04 2.62E-03 Limit Percent of Limit mRem mRem Liver 6.63E-04 6.24E-04 5.03E-04 5.88E-04 2.38E-03 Limit Percent of Limit mRem mRem Total Body 6.63E-04 6.24E-04 5.03E-04 5.88E-04 2.38E-03 Limit Percent of Limit mRem mRem Thyroid 6.64E-04 6.24E-04 5.09E-04 5.88E-04 2.39E-03 Limit Percent of Limit mRem mRem Kidney 1.12E-04 9.16E-05 9.34E-05 8.30E-05 3.80E-04 Limit Percent of Limit mRem mRem Lung 6.63E-04 6.24E-04 5.03E-04 5.88E-04 2.38E-03 Limit Percent of Limit mRem mRem GI-Lli 6.63E-04 6.24E-04 5.03E-04 5.88E-04 2.38E-03 Limit Percent of Limit mRem mRem User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 41

Page 1 of 1 St. Lucie Power Plant Florida Power & Light Monday, February 27, 2023 3:05:57PM Reg. Guide 1.21, App B, Sec Doses due to Radioiodines, Tritium, and Particulates in Gaseous Releases Starting: 1-Jan-2022 Ending: 31-Dec-2022 Unit: PSL2 Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone 5.70E-04 6.85E-04 6.94E-04 6.94E-04 2.64E-03 Limit Percent of Limit mRem mRem Liver 5.50E-04 5.87E-04 5.96E-04 5.96E-04 2.33E-03 Limit Percent of Limit mRem mRem Total Body 5.50E-04 5.87E-04 5.96E-04 5.96E-04 2.33E-03 Limit Percent of Limit mRem mRem Thyroid 5.50E-04 5.87E-04 5.96E-04 5.96E-04 2.33E-03 Limit Percent of Limit mRem mRem Kidney 9.62E-05 8.36E-05 8.54E-05 8.52E-05 3.50E-04 Limit Percent of Limit mRem mRem Lung 5.50E-04 5.87E-04 5.96E-04 5.96E-04 2.33E-03 Limit Percent of Limit mRem mRem GI-Lli 5.50E-04 5.87E-04 5.96E-04 5.96E-04 2.33E-03 Limit Percent of Limit mRem mRem User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 42

Page 1 of 1 St. Lucie Power Plant Florida Power & Light Monday, February 27, 2023 3:04:36PM Reg. Guide 1.21, App B, Sec Air Doses Due To Gaseous Releases Starting: 1-Jan-2022 Ending: 31-Dec-2022 Unit: Site NG Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Gamma Air 2.93E-03 3.42E-02 5.15E-04 2.07E-04 3.79E-02 Limit Percent of Limit mRad mRad Beta Air 1.15E-02 1.77E-02 5.85E-04 9.48E-05 2.99E-02 Limit Percent of Limit mRad mRad NG Total Body 2.78E-03 3.28E-02 4.78E-04 1.97E-04 3.63E-02 Limit Percent of Limit mRem mRem NG Skin 1.41E-02 5.30E-02 9.15E-04 3.00E-04 6.83E-02 Limit Percent of Limit mRem mRem User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 43

Page 1 of 1 St. Lucie Power Plant Florida Power & Light Monday, February 27, 2023 3:03:16PM Reg. Guide 1.21, App B, Sec Air Doses Due To Gaseous Releases Starting: 1-Jan-2022 Ending: 31-Dec-2022 Unit: PSL1 NG Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Gamma Air 2.78E-03 1.37E-04 2.68E-04 8.54E-05 3.27E-03 Limit Percent of Limit mRad mRad Beta Air 1.14E-02 4.93E-05 3.30E-04 3.26E-05 1.18E-02 Limit Percent of Limit mRad mRad NG Total Body 2.64E-03 1.30E-04 2.47E-04 8.10E-05 3.10E-03 Limit Percent of Limit mRem mRem NG Skin 1.39E-02 1.91E-04 4.83E-04 1.19E-04 1.47E-02 Limit Percent of Limit mRem mRem User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 44

Page 1 of 1 St. Lucie Power Plant Florida Power & Light Monday, February 27, 2023 3:04:01PM Reg. Guide 1.21, App B, Sec Air Doses Due To Gaseous Releases Starting: 1-Jan-2022 Ending: 31-Dec-2022 Unit: PSL2 NG Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Gamma Air 1.44E-04 3.41E-02 2.47E-04 1.22E-04 3.46E-02 Limit Percent of Limit mRad mRad Beta Air 1.24E-04 1.76E-02 2.55E-04 6.22E-05 1.81E-02 Limit Percent of Limit mRad mRad NG Total Body 1.34E-04 3.27E-02 2.31E-04 1.15E-04 3.32E-02 Limit Percent of Limit mRem mRem NG Skin 2.23E-04 5.28E-02 4.32E-04 1.81E-04 5.36E-02 Limit Percent of Limit mRem mRem User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 45

Page 1 of 1 St. Lucie Power Plant Florida Power & Light Monday, February 27, 2023 3:02:12PM Reg. Guide 1.21, App B, Sec Doses to a member of the public due to Liquid Releases Starting: 1-Jan-2022 Ending: 31-Dec-2022 Unit: Site Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone 7.60E-04 5.24E-04 5.81E-04 6.52E-04 2.30E-03 Limit Percent of Limit mRem mRem Liver 1.78E-03 1.50E-03 2.58E-03 9.05E-04 6.68E-03 Limit Percent of Limit mRem mRem Total Body 1.81E-03 1.46E-03 2.82E-03 9.66E-04 6.95E-03 Limit Percent of Limit mRem mRem Thyroid 1.30E-03 1.27E-03 2.14E-03 8.30E-04 5.44E-03 Limit Percent of Limit mRem mRem Kidney 1.73E-03 1.60E-03 2.65E-03 7.01E-04 6.68E-03 Limit Percent of Limit mRem mRem Lung 1.32E-03 1.46E-03 3.95E-03 8.43E-04 7.48E-03 Limit Percent of Limit mRem mRem GI-Lli 1.55E-02 3.78E-03 3.10E-02 5.52E-03 5.58E-02 Limit Percent of Limit mRem mRem User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 46

Page 1 of 1 St. Lucie Power Plant Florida Power & Light Monday, February 27, 2023 2:59:13PM Reg. Guide 1.21, App B, Sec Doses to a member of the public due to Liquid Releases Starting: 1-Jan-2022 Ending: 31-Dec-2022 Unit: PSL1 Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone 3.80E-04 2.62E-04 2.91E-04 3.26E-04 1.15E-03 Limit Percent of Limit mRem mRem Liver 8.89E-04 7.48E-04 1.29E-03 4.52E-04 3.34E-03 Limit Percent of Limit mRem mRem Total Body 9.03E-04 7.32E-04 1.41E-03 4.83E-04 3.48E-03 Limit Percent of Limit mRem mRem Thyroid 6.52E-04 6.34E-04 1.07E-03 4.15E-04 2.72E-03 Limit Percent of Limit mRem mRem Kidney 8.66E-04 8.02E-04 1.32E-03 3.50E-04 3.34E-03 Limit Percent of Limit mRem mRem Lung 6.58E-04 7.30E-04 1.98E-03 4.21E-04 3.74E-03 Limit Percent of Limit mRem mRem GI-Lli 7.73E-03 1.89E-03 1.55E-02 2.76E-03 2.79E-02 Limit Percent of Limit mRem mRem User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 47

Page 1 of 1 St. Lucie Power Plant Florida Power & Light Monday, February 27, 2023 3:01:14PM Reg. Guide 1.21, App B, Sec Doses to a member of the public due to Liquid Releases Starting: 1-Jan-2022 Ending: 31-Dec-2022 Unit: PSL2 Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone 3.80E-04 2.62E-04 2.91E-04 3.26E-04 1.15E-03 Limit Percent of Limit mRem mRem Liver 8.89E-04 7.48E-04 1.29E-03 4.52E-04 3.34E-03 Limit Percent of Limit mRem mRem Total Body 9.03E-04 7.32E-04 1.41E-03 4.83E-04 3.48E-03 Limit Percent of Limit mRem mRem Thyroid 6.52E-04 6.34E-04 1.07E-03 4.15E-04 2.72E-03 Limit Percent of Limit mRem mRem Kidney 8.66E-04 8.02E-04 1.32E-03 3.50E-04 3.34E-03 Limit Percent of Limit mRem mRem Lung 6.58E-04 7.30E-04 1.98E-03 4.21E-04 3.74E-03 Limit Percent of Limit mRem mRem GI-Lli 7.73E-03 1.89E-03 1.55E-02 2.76E-03 2.79E-02 Limit Percent of Limit mRem mRem User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 48

Liquid Status Summary Report Period:

Site/Unit/Discharge Point:

Ann, 2022 Site Monday, February 27, 2023 15:15 Page 6 of 6 Agegroup Receptor Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin Liquid Dose Summary - Note: All Doses in mRem Liquid Receptor - Teenager Teenager 0.000E+00 5.577E-02 7.483E-03 6.685E-03 5.441E-03 6.953E-03 6.679E-03 2.303E-03 Liquid Recptor - Child Child 0.000E+00 2.459E-02 6.001E-03 2.905E-03 5.118E-03 6.557E-03 5.888E-03 2.116E-03 Maximum Organ Dose (mRem):

Maximum Total Body Dose (mRem):

5.577E-02 6.953E-03 Maximum Dose by Organ:

2.303E-03 6.679E-03 6.953E-03 5.441E-03 6.685E-03 7.483E-03 5.577E-02 0.000E+00 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 49

Liquid Status Summary Report Period:

Site/Unit/Discharge Point:

Ann, 2022 PSL1 Monday, February 27, 2023 15:10 Page 6 of 6 Agegroup Receptor Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin Liquid Dose Summary - Note: All Doses in mRem Liquid Receptor - Teenager Teenager 0.000E+00 2.788E-02 3.741E-03 3.342E-03 2.720E-03 3.477E-03 3.340E-03 1.151E-03 Liquid Recptor - Child Child 0.000E+00 1.229E-02 3.001E-03 1.453E-03 2.559E-03 3.278E-03 2.944E-03 1.058E-03 Maximum Organ Dose (mRem):

Maximum Total Body Dose (mRem):

2.788E-02 3.477E-03 Maximum Dose by Organ:

1.151E-03 3.340E-03 3.477E-03 2.720E-03 3.342E-03 3.741E-03 2.788E-02 0.000E+00 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 50

Liquid Status Summary Report Period:

Site/Unit/Discharge Point:

Ann, 2022 PSL2 Monday, February 27, 2023 15:15 Page 6 of 6 Agegroup Receptor Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin Liquid Dose Summary - Note: All Doses in mRem Liquid Receptor - Teenager Teenager 0.000E+00 2.788E-02 3.741E-03 3.342E-03 2.720E-03 3.477E-03 3.340E-03 1.151E-03 Liquid Recptor - Child Child 0.000E+00 1.229E-02 3.001E-03 1.453E-03 2.559E-03 3.278E-03 2.944E-03 1.058E-03 Maximum Organ Dose (mRem):

Maximum Total Body Dose (mRem):

2.788E-02 3.477E-03 Maximum Dose by Organ:

1.151E-03 3.340E-03 3.477E-03 2.720E-03 3.342E-03 3.741E-03 2.788E-02 0.000E+00 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 51

Gas Status Summary Report Period:

Site/Unit/Discharge Point:

Ann, 2022 Site Monday, February 27, 2023 15:21 Page 15 of 16 Receptor Site Boundary NNG Doserate Summary - Note: All Doses in mRem/yr Bone Agegroup Liver Total Body Thyroid Kidney Lung GI-Lli Skin NW Site Boundary - In Infant 5.259E-03 4.708E-03 4.708E-03 4.715E-03 7.302E-04 4.708E-03 4.708E-03 0.000E+00 WNW Site Boundary - I Infant 3.562E-07 3.562E-07 3.562E-07 3.562E-07 3.562E-07 3.562E-07 3.562E-07 0.000E+00 Maximum Organ Doserate (mRem/yr):

Maximum Total Body Doserate (mRem/yr):

5.259E-03 4.708E-03 Maximum Doserate by Organ:

5.259E-03 4.708E-03 4.708E-03 4.715E-03 7.302E-04 4.708E-03 4.708E-03 0.000E+00 Site Boundary NG Doserate Summary Skin (mRem/yr)

Total Body (mRem/yr)

Beta (mRad/yr)

Gamma (mRad/yr)

Gas Receptor Location NW Site Boundary 3.787E-02 2.985E-02 3.625E-02 6.830E-02 WNW Site Boundary 3.262E-02 2.572E-02 3.123E-02 5.884E-02 Maximum NG Dose Rate:

3.787E-02 2.985E-02 3.625E-02 6.830E-02 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 52

Gas Status Summary Report Period:

Site/Unit/Discharge Point:

Ann, 2022 Site Monday, February 27, 2023 15:21 Page 16 of 16 Agegroup Receptor Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin Maximum Individual NNG Dose Summary - Note: All Doses in mRem Adult 4.123E-08 5.340E-08 3.622E-08 1.208E-05 8.062E-08 2.521E-08 3.193E-08 0.000E+00 NW - Near Milk - Adult Child 1.221E-07 1.265E-07 9.655E-08 3.539E-05 8.253E-08 2.708E-08 3.039E-08 0.000E+00 NW Near Milk - Child Infant 2.355E-07 2.822E-07 1.675E-07 8.420E-05 7.743E-08 2.459E-08 3.032E-08 0.000E+00 NW Near Milk - Infant Teenager 6.003E-08 7.983E-08 5.230E-08 1.809E-05 9.856E-08 2.984E-08 3.530E-08 0.000E+00 NW Near Milk - Teenager Adult 9.337E-08 9.687E-08 9.131E-08 2.429E-06 1.038E-07 1.309E-07 9.736E-08 0.000E+00 SE Nearest Res - Adult Child 9.851E-08 1.000E-07 9.404E-08 3.599E-06 9.496E-08 1.389E-07 9.191E-08 0.000E+00 SE Nearest Res - Child Infant 9.625E-08 9.919E-08 9.219E-08 3.323E-06 9.024E-08 1.283E-07 8.911E-08 0.000E+00 SE Nearest Res - Infant Teenager 9.556E-08 1.002E-07 9.270E-08 2.981E-06 1.038E-07 1.506E-07 9.714E-08 0.000E+00 SE Nearest Res - Teenager Adult 4.319E-08 4.472E-08 4.229E-08 1.063E-06 4.775E-08 5.960E-08 4.494E-08 0.000E+00 SE Visitor - Lifeguard 1.0 mi Adult 4.345E-08 4.490E-08 4.260E-08 1.008E-06 4.776E-08 5.897E-08 4.510E-08 0.000E+00 W Near Garden - Adult Child 4.558E-08 4.620E-08 4.373E-08 1.491E-06 4.411E-08 6.224E-08 4.285E-08 0.000E+00 W Near Garden - Child Teenager 4.436E-08 4.626E-08 4.318E-08 1.236E-06 4.776E-08 6.707E-08 4.501E-08 0.000E+00 W Near Garden - Teenager Maximum Organ Dose (mRem):

Maximum Total Body Dose (mRem):

8.420E-05 1.675E-07 Maximum Dose by Organ:

2.355E-07 2.822E-07 1.675E-07 8.420E-05 1.038E-07 1.506E-07 9.736E-08 0.000E+00 Maximum Individual NG Dose Summary Skin (mRem)

Total Body (mRem)

Beta (mRad)

Gamma (mRad)

Gas Receptor Location 3.313E-03 2.612E-03 3.172E-03 5.977E-03 NW Near Milk 4.25 mi 1.685E-02 1.329E-02 1.614E-02 3.040E-02 SE Nearest Res 1.52 mi 142 deg 7.298E-03 5.753E-03 6.986E-03 1.316E-02 SE Visitor @ 1 mi 5.798E-03 4.571E-03 5.551E-03 1.046E-02 W Near Gard 2.0 miles Maximum NG Dose:

1.685E-02 1.329E-02 1.614E-02 3.040E-02 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 53

Gas Status Summary Report Period:

Site/Unit/Discharge Point:

Ann, 2022 PSL1 Monday, February 27, 2023 15:18 Page 9 of 10 Receptor Site Boundary NNG Doserate Summary - Note: All Doses in mRem/yr Bone Agegroup Liver Total Body Thyroid Kidney Lung GI-Lli Skin NW Site Boundary - In Infant 2.615E-03 2.379E-03 2.379E-03 2.386E-03 3.797E-04 2.379E-03 2.379E-03 0.000E+00 WNW Site Boundary - I Infant 7.455E-08 7.455E-08 7.455E-08 7.455E-08 7.455E-08 7.455E-08 7.455E-08 0.000E+00 Maximum Organ Doserate (mRem/yr):

Maximum Total Body Doserate (mRem/yr):

2.615E-03 2.379E-03 Maximum Doserate by Organ:

2.615E-03 2.379E-03 2.379E-03 2.386E-03 3.797E-04 2.379E-03 2.379E-03 0.000E+00 Site Boundary NG Doserate Summary Skin (mRem/yr)

Total Body (mRem/yr)

Beta (mRad/yr)

Gamma (mRad/yr)

Gas Receptor Location NW Site Boundary 3.272E-03 1.176E-02 3.099E-03 1.465E-02 WNW Site Boundary 2.819E-03 1.013E-02 2.670E-03 1.262E-02 Maximum NG Dose Rate:

3.272E-03 1.176E-02 3.099E-03 1.465E-02 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 54

Gas Status Summary Report Period:

Site/Unit/Discharge Point:

Ann, 2022 PSL1 Monday, February 27, 2023 15:18 Page 10 of 10 Agegroup Receptor Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin Maximum Individual NNG Dose Summary - Note: All Doses in mRem Adult 2.532E-08 3.548E-08 2.079E-08 1.005E-05 5.843E-08 4.471E-09 1.496E-08 0.000E+00 NW - Near Milk - Adult Child 9.273E-08 9.636E-08 7.025E-08 2.947E-05 5.983E-08 4.291E-09 1.485E-08 0.000E+00 NW Near Milk - Child Infant 1.870E-07 2.259E-07 1.284E-07 7.003E-05 5.551E-08 4.010E-09 1.518E-08 0.000E+00 NW Near Milk - Infant Teenager 4.103E-08 5.755E-08 3.399E-08 1.506E-05 7.337E-08 4.730E-09 1.775E-08 0.000E+00 NW Near Milk - Teenager Adult 2.504E-08 2.833E-08 2.301E-08 2.147E-06 3.476E-08 2.433E-08 2.415E-08 0.000E+00 SE Nearest Res - Adult Child 2.983E-08 3.134E-08 2.555E-08 3.254E-06 2.656E-08 2.357E-08 2.215E-08 0.000E+00 SE Nearest Res - Child Infant 2.775E-08 3.057E-08 2.388E-08 3.003E-06 2.218E-08 2.238E-08 2.058E-08 0.000E+00 SE Nearest Res - Infant Teenager 2.710E-08 3.145E-08 2.433E-08 2.663E-06 3.476E-08 2.543E-08 2.454E-08 0.000E+00 SE Nearest Res - Teenager Adult 1.147E-08 1.291E-08 1.059E-08 9.380E-07 1.572E-08 1.116E-08 1.109E-08 0.000E+00 SE Visitor - Lifeguard 1.0 mi Adult 1.143E-08 1.279E-08 1.059E-08 8.877E-07 1.545E-08 1.114E-08 1.107E-08 0.000E+00 W Near Garden - Adult Child 1.341E-08 1.403E-08 1.164E-08 1.345E-06 1.206E-08 1.083E-08 1.024E-08 0.000E+00 W Near Garden - Child Teenager 1.229E-08 1.408E-08 1.114E-08 1.101E-06 1.545E-08 1.159E-08 1.123E-08 0.000E+00 W Near Garden - Teenager Maximum Organ Dose (mRem):

Maximum Total Body Dose (mRem):

7.003E-05 1.284E-07 Maximum Dose by Organ:

1.870E-07 2.259E-07 1.284E-07 7.003E-05 7.337E-08 2.543E-08 2.454E-08 0.000E+00 Maximum Individual NG Dose Summary Skin (mRem)

Total Body (mRem)

Beta (mRad)

Gamma (mRad)

Gas Receptor Location 2.863E-04 1.029E-03 2.712E-04 1.282E-03 NW Near Milk 4.25 mi 1.456E-03 5.236E-03 1.379E-03 6.522E-03 SE Nearest Res 1.52 mi 142 deg 6.306E-04 2.267E-03 5.973E-04 2.824E-03 SE Visitor @ 1 mi 5.011E-04 1.801E-03 4.746E-04 2.244E-03 W Near Gard 2.0 miles Maximum NG Dose:

1.456E-03 5.236E-03 1.379E-03 6.522E-03 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 55

Gas Status Summary Report Period:

Site/Unit/Discharge Point:

Ann, 2022 PSL2 Monday, February 27, 2023 15:20 Page 8 of 9 Receptor Site Boundary NNG Doserate Summary - Note: All Doses in mRem/yr Bone Agegroup Liver Total Body Thyroid Kidney Lung GI-Lli Skin NW Site Boundary - In Infant 2.644E-03 2.329E-03 2.329E-03 2.329E-03 3.505E-04 2.329E-03 2.329E-03 0.000E+00 WNW Site Boundary - I Infant 2.817E-07 2.817E-07 2.817E-07 2.817E-07 2.817E-07 2.817E-07 2.817E-07 0.000E+00 Maximum Organ Doserate (mRem/yr):

Maximum Total Body Doserate (mRem/yr):

2.644E-03 2.329E-03 Maximum Doserate by Organ:

2.644E-03 2.329E-03 2.329E-03 2.329E-03 3.505E-04 2.329E-03 2.329E-03 0.000E+00 Site Boundary NG Doserate Summary Skin (mRem/yr)

Total Body (mRem/yr)

Beta (mRad/yr)

Gamma (mRad/yr)

Gas Receptor Location NW Site Boundary 3.460E-02 1.809E-02 3.315E-02 5.365E-02 WNW Site Boundary 2.980E-02 1.558E-02 2.856E-02 4.622E-02 Maximum NG Dose Rate:

3.460E-02 1.809E-02 3.315E-02 5.365E-02 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 56

Gas Status Summary Report Period:

Site/Unit/Discharge Point:

Ann, 2022 PSL2 Monday, February 27, 2023 15:20 Page 9 of 9 Agegroup Receptor Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin Maximum Individual NNG Dose Summary - Note: All Doses in mRem Adult 1.591E-08 1.791E-08 1.543E-08 2.034E-06 2.219E-08 2.074E-08 1.696E-08 0.000E+00 NW - Near Milk - Adult Child 2.938E-08 3.014E-08 2.630E-08 5.922E-06 2.271E-08 2.279E-08 1.554E-08 0.000E+00 NW Near Milk - Child Infant 4.850E-08 5.629E-08 3.902E-08 1.417E-05 2.192E-08 2.057E-08 1.514E-08 0.000E+00 NW Near Milk - Infant Teenager 1.900E-08 2.228E-08 1.832E-08 3.036E-06 2.518E-08 2.511E-08 1.755E-08 0.000E+00 NW Near Milk - Teenager Adult 6.833E-08 6.855E-08 6.830E-08 2.813E-07 6.905E-08 1.066E-07 7.321E-08 0.000E+00 SE Nearest Res - Adult Child 6.867E-08 6.869E-08 6.849E-08 3.441E-07 6.841E-08 1.153E-07 6.976E-08 0.000E+00 SE Nearest Res - Child Infant 6.851E-08 6.862E-08 6.831E-08 3.208E-07 6.806E-08 1.059E-07 6.852E-08 0.000E+00 SE Nearest Res - Infant Teenager 6.846E-08 6.871E-08 6.837E-08 3.172E-07 6.905E-08 1.251E-07 7.260E-08 0.000E+00 SE Nearest Res - Teenager Adult 3.172E-08 3.181E-08 3.171E-08 1.247E-07 3.203E-08 4.843E-08 3.385E-08 0.000E+00 SE Visitor - Lifeguard 1.0 mi Adult 3.202E-08 3.211E-08 3.201E-08 1.200E-07 3.232E-08 4.783E-08 3.403E-08 0.000E+00 W Near Garden - Adult Child 3.216E-08 3.217E-08 3.209E-08 1.459E-07 3.205E-08 5.142E-08 3.261E-08 0.000E+00 W Near Garden - Child Teenager 3.207E-08 3.218E-08 3.204E-08 1.348E-07 3.232E-08 5.547E-08 3.378E-08 0.000E+00 W Near Garden - Teenager Maximum Organ Dose (mRem):

Maximum Total Body Dose (mRem):

1.417E-05 6.849E-08 Maximum Dose by Organ:

6.867E-08 6.871E-08 6.849E-08 1.417E-05 6.905E-08 1.251E-07 7.321E-08 0.000E+00 Maximum Individual NG Dose Summary Skin (mRem)

Total Body (mRem)

Beta (mRad)

Gamma (mRad)

Gas Receptor Location 3.027E-03 1.583E-03 2.901E-03 4.694E-03 NW Near Milk 4.25 mi 1.540E-02 8.051E-03 1.476E-02 2.388E-02 SE Nearest Res 1.52 mi 142 deg 6.667E-03 3.486E-03 6.389E-03 1.034E-02 SE Visitor @ 1 mi 5.297E-03 2.770E-03 5.076E-03 8.215E-03 W Near Gard 2.0 miles Maximum NG Dose:

1.540E-02 8.051E-03 1.476E-02 2.388E-02 User: admin

[Server]: PSLSA137 [Database]: NEPSOEMP 57

3.4 Visitor Dose Dose to a Member of the Public from Activities Inside the Site Boundary Assessment of radiation dose from radioactive effluents to MEMBERS OF THE PUBLIC due to their activities inside the SITE BOUNDARY assumes the VISITOR to be a Lifeguard at the Walton Rocks Beach recreation area. The visitor is assumed to be onsite for 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months per day for 312 days per year at a distance of 1 mile in the South East sector. The VISITOR received exposure from each of the two reactors on Site. Actual Met Data was used to calculate Visitor Dose for Calendar Year 2022, and the results are below.

Noble Gas Dose mrad Gamma Air Dose 12.15E-03 Beta Air Dose 1.39E-03 Gas, Particulate, Iodine, Carbon Dose mrem Bone 1.10E-09 Liver 1.31E-09 Thyroid 6.11E-07 Kidney 7.76E-09 Lung 3.41E-09 GI-LLI 4.53E-09 Total Body 4.37E-09 58

L-2023-032, 2022 Annual Radioactive Effluent Release Report

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L-2023-032, 2022 Annual Radioactive Effluent Release Report

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