Text

Correction to the 2020 Annual Radioactive Effluent Release Report
	ML21348A338
Person / Time
Site:	Saint Lucie
Issue date:	12/14/2021
From:	Godes W; Florida Power & Light Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	L-2021-225
	Download: ML21348A338 (77)
	v • d • e

December 14, 2021 L-2021-225 10 CFR 50.36a U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Re: St. Lucie Units 1 and 2 Docket Nos. 50-335 and 50-389 Correction to the 2020 Annual Radioactive Effluent Release Report

Reference:

1. FPL letter L-2021-049 dated March 1, 2021: 2020 Annual Radioactive Effluent Release Report By letter dated March 1, 2021 (Reference 1, L-2021-049), Florida Power & Light submitted the 2020 Annual Radioactive Effluent Release Report for St. Lucie Units 1 and 2 pursuant to 10 CFR 50.36a(a)(2) and Technical Specification (TS) 6.9.1.7. The 2020 report provided information for the 12-month period beginning January 1, 2020 and ending December 31, 2020.

The 2020 Annual Radioactive Effluent Release Report (L-2021-049) was found to contain an error related to the amount of tritium reported in the liquid releases for the third and fourth quarters. Further investigation revealed and corrected two additional errors with gaseous release permits being closed on the wrong date, making it appear that the releases were 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months longer (i.e., greater) than actual. L-2021-049, , Table 3.1, Gaseous Effluents and Liquid Effluents, and Table 3.3, Dose Assessments, are corrected in the enclosure.

Please contact Richard Sciscente at 772-467-7156 with any questions regarding this submittal.

Sincerely, Wyatt Godes Licensing Manager St. Lucie Plant WG/rcs

Enclosure:

Combined Annual Radioactive Effluent Release Report Florida Power & Light Company 6501 S. Ocean Drive, Jensen Beach, FL 34957

L-2021-225 Enclosure ENCLOSURE 1 COMBINED ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT (10 PAGES)

This portion of the 2020 Annual Radioactive Effluent Release Report was originally submitted with L-2021-049 on March 1, 2021. It is included unchanged with this correction letter for context and completeness.

L-2021-049 Enclosure FLORIDA POWER & LIGHT COMPANY ST. LUCIE UNITS 1 AND 2 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT JANUARY 1, 2020 THROUGH DECEMBER 31, 2020 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

L-2021-049 Enclosure 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, f rom each unit, to areas at and beyond the site boundary shall be limited to the following:

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, iodine-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 iodine-131, iodine-133, tritium, carbon-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 the following:

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:

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

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

L-2021-049 Enclosure 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 no t 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 as follows:

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 above listed maximums.

L-2021-049 Enclosure 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 Sr-89, Sr-90, Fe-55, 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 p resent 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 and 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 2020, is retained onsite.

This data is available for review by the NRC upon request. During 20 20, the goal of 90% joint data recovery was met. Actual meteorolo gical data collected during the year was used for the offsite dose calculations in th is report.

L-2021-049 Enclosure Carbon-14 Dose Estimation The estimate of Carbon-14 (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 th e proxy generation rate values for a Combustion Engineering reactor. The actual 2020 operating data for the units was employed for the calculatio ns to derive the total curies released for each unit.

The total amount of C-14 released in 2020 from Unit 1 was 11.54 Ci, an d the total amount of C-14 released in 2020 from Unit 2 was 10.53 Ci.

The highest calculated dose exposure pathway from C-14 is Bone Dose to a Child from consumption of garden produce. A Child consuming vegetables and produce from the garden located at 2.0 miles in the West-South-West direction from the plant would have received a total combined Bone Dose, from C-14, of 1.67E-01 mrem/yr.

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 Walton Rocks Beach Recreation Area located 1 mile southeast of the site. Dose to the visitor on site for calendar year 2020 is found to be 2.76E-04 mrem/yr Total Body dose. See Section 3.4, Dose Assessments, for more detail.

This is a fraction of the 1 mrem annual whole body dose received by th e average US citizen from natural occurring Carbon-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.

L-2021-049 Enclosure 2.0 SUPPLEMENTAL INFORMATION 2.1 Abnormal Releases or Abnormal Discharges No abnormal (unplanned) releases or discharges occurred during the report period.

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 No changes were made to the Annual Land Use Census during the report period.

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

2.6 Offsite Dose Calculation Manual Changes No changes were made to the Offsite Dose Calculation Manual during the report period.

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 The 2018 ARERR, Table 3.1, Gaseous Effluents and Liquid Effluents, included a data entry error that was subsequently carried forward into additional tabulated totals. The 2018 third quarter summation of releases was conservatively reported higher than actual for Iodines and Halogens and f or Particulates. This error was corrected in April of 2020 and subsequently reported to the NRC per Enclosure 1 of letter L-2020-047, dated April 20, 2020.

L-2021-049 Enclosure 2.9 Other AR 2375532 - Incorrect Calculation of Total Suspended Solids in Discharge Permit The Total Suspended Solids (TSS) calculated to support approval of the October 20, 2020 South Pond Discharge Permit was performed incorrectly.

The TSS calculated on CY-SL-102-0006 Attachment 2, Worksheet for Environmental Samples, showed 1.00 ppm. The correct value should have been 2.6 ppm. The correct value of 2.6 ppm was well below the TSS monthly average limit of 30 ppm, so there was no immediate consequence of the error.

The corrective action program human performance learning opportunity review determined that leadership did not recognize the impact this may hav e on the permit and failed to validate the TSS calculation during supervisory review because of the simplistic nature of the calculation. Corrective action s include procedure change revision (PCR) 2379458 to correct CY-SL-102-0006, Determination of Suspended Solids in Water, and CY-SL-102-0104, Processing Aerated Liquid Wastes. An independent verification was added to the attachment for the TSS calculation and check-off steps were added to th e permit generation for the supervisor to ensure that independent v erificatio ns were performed.

AR 2347756 - Groundwater: Elevated Results for January 2020 On January 28, 2020, Chemistry collected the January monthly required groundwater samples and sent the samples to GEL Lab for analysis. The result for Monitoring Well MW-6, located on the south side of the access road in the radiation control area (RCA), in front of the Unit 1 component cooling water (CCW) heat exchangers, was 18,200 pCi/L for tritium. Although this well consistently has results greater than minimum detectable activity (MDA), this result was significantly higher than previous months, with December's result being 6,560 pCi/L. A significant increase in concentration of tritium in a groundwater well is required to be documented in a CR. This concentration was not reportable. The reportable limit is 30,000 pCi/L per EPA 40CFR141.

L-2021-049 Enclosure South Pond Settling Basin Release Summary Fourteen batch releases occurred during the report period from the South Settling Basin to the Intake Canal to lower the water level due to periods of higher than normal rainfall. 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:

Release Start Volume Date (Gallons) 2/7/2020 2,644,164 5/15/2020 851,516 5/25/2020 13,739,987 6/3/2020 7,512,519 6/11/2020 68,724 6/18/2020 1,154,827 7/23/2020 5,082,000 7/30/2020 6,913,985 8/21/2020 4,677,901 10/1/2020 5,140,599 10/8/2020 5,033,682 10/21/2020 4,157,393 11/5/2020 5,162,509 11/11/2020 5,076,956

L-2021-049 Enclosure 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 following table:

2020 St. Lucie Nuclear Plant Groundwater Protection Program Tritium Results (pCi/L)

Well ID Jan Feb March April May June July Aug Sept Oct Nov Dec 1MW001 358 1MW002 <191 1MW003 <187 1MW004 <202 1MW005 228 294 589 <225 2MW001 332 <217 <224 <220 2MW002 1050 <214 <293 <222 2MW003 367 766 494 321 2MW004 <189 <217 <286 <223 MW-15 <201 <292 235 311 MW-16 <189 <278 <284 <226 MW-17 1500 1470 2020 2750 2590 3280 3210 1430 1420 1950 2160 2030 MW-18d 2200 1660 2000 2140 2200 1930 2220 2860 2260 2360 1680 1390 MW-19 <199 <230 <210 <194 MW-22d <188 <237 <281 <232 MW-26 <188 <229 <230 <200 MW-3 303 343 347 411 MW-30 292 <214 <290 <221 MW-31 <187 <290 <227 <219 MW-32 275 501 287 291 MW-33 607 580 614 327 MW-4 <203 332 <247 <299 240 <199 MW-5 <194 <240 <234 <196 MW-6 18200 11600 10400 12400 13800 10600 11800 12400 13300 17100 18900 2570 MW-7 <191 334 <234 <242 <235 <223 <298 <278 NB-MW-1 <247 NB-MW-2 <238 PSLED-2 <253 RW-2 <203 <230 <223 <291 RW-4 <187 <222 <279 <268 RW-5 <190 <237 <290 <204 S-MW-1 <187 S-MW-11 <249 S-MW-15D <255 S-MW-16 <256 S-MW-16i <237 S-MW-17 <254 S-MW-18 <242 S-MW-19 <243 S-MW-4 <185 S-MW-6 <247 S-MW-7A <223

L-2021-049 Enclosure 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

L-2021-225 Enclosure TABLE 3.1 GASEOUS EFFLUENTS AND LIQUID EFFLUENTS (25 PAGES)

This portion of the 2020 Annual Radioactive Effluent Release Report was originally submitted with L-2021-049 on March 1, 2021. The attached table has been corrected and replaced in its entirety.

Saturday, September 11, 2021 12:30:56PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 5A and 5B - Liquid and Gas Batch Release Summary Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 A. Liquid Batch Release Totals Units 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Year Totals

1. Number of Batch Releases 21 8 10 11 50

2. Total duration of batch releases min 2.11E+04 4.54E+04 2.77E+04 4.86E+04 1.43E+05

3. Maximum batch release duration min 5.76E+03 1.00E+04 9.96E+03 1.00E+04 1.00E+04

4. Average batch release duration min 1.01E+03 5.68E+03 2.77E+03 4.42E+03 2.86E+03

5. Minimum batch release duration min 4.68E+02 6.51E+02 5.65E+02 5.81E+02 4.68E+02 B. Gas Batch Release Totals Units 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Year Totals

1. Number of Batch Releases 65 58 58 51 232

2. Total duration of batch releases min 6.47E+04 1.98E+04 1.93E+04 1.75E+04 1.21E+05

3. Maximum batch release duration min 2.16E+04 6.00E+02 6.00E+02 6.00E+02 2.16E+04

4. Average batch release duration min 9.96E+02 3.41E+02 3.33E+02 3.43E+02 5.23E+02

5. Minimum batch release duration min 1.50E+01 2.90E+01 2.90E+01 5.00E+00 5.00E+00 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Friday, February 12, 2021 2:44:54PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 6A and 6B - Liquid and Gas Abnormal Release Summary Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 A. Liquid Abnormal Release Totals Units 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Year Totals

1. Number of Abnormal Releases 0 0 0 0 0

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

1. Number of Abnormal Releases 0 0 0 0 0

2. Total Activity of abnormal releases Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Page 1 of 1 Saturday, September 11, 2021 5:45:08PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 1A, Gaseous Effluents - Summation of All Releases Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Gases

1. Total Release Ci 7.59E+00 2.97E-01 2.97E-01 2.83E-01 8.46E+00

2. Average Release Rate for Period uCi/s 9.65E-01 3.78E-02 3.74E-02 3.56E-02 2.68E-01

3. Percent of Limit %

B. Iodines and Halogens

1. Total Release Ci 6.69E-05 4.43E-07 0.00E+00 0.00E+00 6.74E-05

2. Average Release Rate for Period uCi/s 8.51E-06 5.64E-08 0.00E+00 0.00E+00 2.13E-06

3. Percent of Limit %

C. Particulates

1. Total Release Ci 8.43E-05 8.58E-04 0.00E+00 0.00E+00 9.43E-04

2. Average Release Rate for Period uCi/s 1.07E-05 1.09E-04 0.00E+00 0.00E+00 2.98E-05

3. Percent of Limit %

D. Tritium

1. Total Release Ci 4.31E+01 4.21E-01 9.02E-01 7.24E-01 4.52E+01

2. Average Release Rate for Period uCi/s 5.48E+00 5.36E-02 1.13E-01 9.11E-02 1.43E+00

3. Percent of Limit %

E. Gross Alpha

1. Total Release Ci 1.82E-08 1.83E-08 7.02E-09 3.24E-08 7.60E-08 F. Carbon-14

1. Total Release Ci 4.74E+00 5.75E+00 5.80E+00 5.82E+00 2.21E+01

2. Average Release Rate for Period uCi/s 6.03E-01 7.32E-01 7.30E-01 7.32E-01 6.99E-01

3. Percent of Limit %

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Page 1 of 1 Saturday, September 11, 2021 5:40:10PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 1A, Gaseous Effluents - Summation of All Releases Unit: PSL1 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Gases

1. Total Release Ci 1.78E-01 7.80E-02 7.63E-02 1.13E-01 4.45E-01

2. Average Release Rate for Period uCi/s 2.26E-02 9.92E-03 9.60E-03 1.43E-02 1.41E-02

3. Percent of Limit %

B. Iodines and Halogens

1. Total Release Ci 0.00E+00 4.43E-07 0.00E+00 0.00E+00 4.43E-07

2. Average Release Rate for Period uCi/s 0.00E+00 5.64E-08 0.00E+00 0.00E+00 1.40E-08

3. Percent of Limit %

C. Particulates

1. Total Release Ci 7.62E-05 8.58E-04 0.00E+00 0.00E+00 9.34E-04

2. Average Release Rate for Period uCi/s 9.69E-06 1.09E-04 0.00E+00 0.00E+00 2.95E-05

3. Percent of Limit %

D. Tritium

1. Total Release Ci 1.70E-01 3.30E-01 5.44E-01 4.19E-01 1.46E+00

2. Average Release Rate for Period uCi/s 2.16E-02 4.19E-02 6.85E-02 5.27E-02 4.63E-02

3. Percent of Limit %

E. Gross Alpha

1. Total Release Ci 1.82E-08 0.00E+00 0.00E+00 3.24E-08 5.06E-08 F. Carbon-14

1. Total Release Ci 2.89E+00 2.88E+00 2.90E+00 2.92E+00 1.16E+01

2. Average Release Rate for Period uCi/s 3.67E-01 3.66E-01 3.64E-01 3.67E-01 3.66E-01

3. Percent of Limit %

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Page 1 of 1 Friday, February 12, 2021 2:47:45PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 1A, Gaseous Effluents - Summation of All Releases Unit: PSL2 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Gases

1. Total Release Ci 7.41E+00 2.19E-01 2.21E-01 1.70E-01 8.02E+00

2. Average Release Rate for Period uCi/s 9.42E-01 2.78E-02 2.78E-02 2.13E-02 2.54E-01

3. Percent of Limit %

B. Iodines and Halogens

1. Total Release Ci 6.69E-05 0.00E+00 0.00E+00 0.00E+00 6.69E-05

2. Average Release Rate for Period uCi/s 8.51E-06 0.00E+00 0.00E+00 0.00E+00 2.12E-06

3. Percent of Limit %

C. Particulates

1. Total Release Ci 8.09E-06 0.00E+00 0.00E+00 0.00E+00 8.09E-06

2. Average Release Rate for Period uCi/s 1.03E-06 0.00E+00 0.00E+00 0.00E+00 2.56E-07

3. Percent of Limit %

D. Tritium

1. Total Release Ci 4.29E+01 9.15E-02 3.57E-01 3.05E-01 4.37E+01

2. Average Release Rate for Period uCi/s 5.46E+00 1.16E-02 4.50E-02 3.84E-02 1.38E+00

3. Percent of Limit %

E. Gross Alpha

1. Total Release Ci 0.00E+00 1.83E-08 7.02E-09 0.00E+00 2.54E-08 F. Carbon-14

1. Total Release Ci 1.85E+00 2.87E+00 2.91E+00 2.90E+00 1.05E+01

2. Average Release Rate for Period uCi/s 2.35E-01 3.66E-01 3.66E-01 3.65E-01 3.33E-01

3. Percent of Limit %

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Page 1 of 3 Monday, February 15, 2021 8:55:48AM 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-2020 Ending: 31-Dec-2020 Continuous Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Gases Ar-41 Ci 3.06E+00 0.00E+00 0.00E+00 0.00E+00 3.06E+00 Xe-133 Ci 6.64E-02 0.00E+00 0.00E+00 0.00E+00 6.64E-02 Total For Period Ci 3.12E+00 0.00E+00 0.00E+00 0.00E+00 3.12E+00 B. Iodines and Halogens I-131 Ci 4.83E-06 4.43E-07 0.00E+00 0.00E+00 5.27E-06 I-133 Ci 6.21E-05 0.00E+00 0.00E+00 0.00E+00 6.21E-05 Total For Period Ci 6.69E-05 4.43E-07 0.00E+00 0.00E+00 6.74E-05 C. Particulates No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Tritium H-3 Ci 4.01E+01 0.00E+00 0.00E+00 0.00E+00 4.01E+01 E. Gross Alpha G-Alpha Ci 1.82E-08 1.83E-08 7.02E-09 3.24E-08 7.60E-08 F. Carbon-14 C-14 Ci 4.74E+00 5.75E+00 5.80E+00 5.82E+00 2.21E+01 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 2/15/2021 8:55 Page 2 of 3 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Batch Mode Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Gases Ar-41 Ci 3.87E+00 2.65E-01 2.63E-01 2.63E-01 4.66E+00 Kr-85m Ci 3.81E-05 2.04E-05 3.31E-05 0.00E+00 9.16E-05 Kr-87 Ci 5.00E-05 0.00E+00 0.00E+00 0.00E+00 5.00E-05 Kr-88 Ci 0.00E+00 1.78E-04 0.00E+00 0.00E+00 1.78E-04 Kr-89 Ci 0.00E+00 6.85E-03 0.00E+00 0.00E+00 6.85E-03 Xe-127 Ci 0.00E+00 0.00E+00 3.44E-05 0.00E+00 3.44E-05 Xe-133m Ci 2.81E-04 0.00E+00 6.90E-05 0.00E+00 3.51E-04 Xe-135 Ci 1.37E-03 4.97E-04 2.52E-04 7.80E-04 2.90E-03 Xe-133 Ci 5.95E-01 2.23E-02 3.38E-02 2.46E-02 6.76E-01 Xe-137 Ci 0.00E+00 1.68E-03 0.00E+00 0.00E+00 1.68E-03 Total For Period Ci 4.47E+00 2.97E-01 2.97E-01 2.88E-01 5.35E+00 B. Iodines and Halogens I-131 Ci 3.81E-08 0.00E+00 0.00E+00 0.00E+00 3.81E-08 C. Particulates Co-58 Ci 6.87E-08 0.00E+00 0.00E+00 0.00E+00 6.87E-08 Co-60 Ci 7.63E-05 8.58E-04 0.00E+00 0.00E+00 9.35E-04 Cs-137 Ci 7.91E-06 0.00E+00 0.00E+00 0.00E+00 7.91E-06 Total For Period Ci 8.43E-05 8.58E-04 0.00E+00 0.00E+00 9.43E-04 D. Tritium H-3 Ci 3.03E+00 4.21E-01 9.02E-01 7.68E-01 5.12E+00 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 2/15/2021 8:55 Page 3 of 3 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Batch Mode Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual E. Gross Alpha No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 F. Carbon-14 No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 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

Page 1 of 2 Friday, February 12, 2021 2:51:09PM 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-2020 Ending: 31-Dec-2020 Continuous Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Gases Xe-133 Ci 6.64E-02 0.00E+00 0.00E+00 0.00E+00 6.64E-02 B. Iodines and Halogens I-131 Ci 0.00E+00 4.43E-07 0.00E+00 0.00E+00 4.43E-07 C. Particulates No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Tritium No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 E. Gross Alpha G-Alpha Ci 1.82E-08 0.00E+00 0.00E+00 3.24E-08 5.06E-08 F. Carbon-14 C-14 Ci 2.89E+00 2.88E+00 2.90E+00 2.92E+00 1.16E+01 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

Florida Power & Light, St. Lucie Power Plant 2/12/2021 14:51 Page 2 of 2 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Batch Mode Unit: PSL1 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Gases Ar-41 Ci 1.04E-01 6.41E-02 7.01E-02 1.11E-01 3.49E-01 Kr-85m Ci 2.34E-05 2.04E-05 3.31E-05 0.00E+00 7.69E-05 Kr-87 Ci 5.00E-05 0.00E+00 0.00E+00 0.00E+00 5.00E-05 Kr-89 Ci 0.00E+00 6.85E-03 0.00E+00 0.00E+00 6.85E-03 Xe-135 Ci 1.15E-04 6.73E-05 0.00E+00 9.38E-05 2.76E-04 Xe-137 Ci 0.00E+00 1.68E-03 0.00E+00 0.00E+00 1.68E-03 Xe-133 Ci 7.23E-03 5.25E-03 6.17E-03 7.36E-03 2.60E-02 Total For Period Ci 1.11E-01 7.80E-02 7.63E-02 1.19E-01 3.84E-01 B. Iodines and Halogens No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 C. Particulates Co-60 Ci 7.62E-05 8.58E-04 0.00E+00 0.00E+00 9.34E-04 D. Tritium H-3 Ci 1.70E-01 3.30E-01 5.44E-01 4.62E-01 1.51E+00 E. Gross Alpha No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 F. Carbon-14 No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

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Page 1 of 3 Friday, February 12, 2021 2:52:18PM 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-2020 Ending: 31-Dec-2020 Continuous Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Gases Ar-41 Ci 3.06E+00 0.00E+00 0.00E+00 0.00E+00 3.06E+00 B. Iodines and Halogens I-131 Ci 4.83E-06 0.00E+00 0.00E+00 0.00E+00 4.83E-06 I-133 Ci 6.21E-05 0.00E+00 0.00E+00 0.00E+00 6.21E-05 Total For Period Ci 6.69E-05 0.00E+00 0.00E+00 0.00E+00 6.69E-05 C. Particulates No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Tritium H-3 Ci 4.01E+01 0.00E+00 0.00E+00 0.00E+00 4.01E+01 E. Gross Alpha G-Alpha Ci 0.00E+00 1.83E-08 7.02E-09 0.00E+00 2.54E-08 F. Carbon-14 C-14 Ci 1.85E+00 2.87E+00 2.91E+00 2.90E+00 1.05E+01 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

Florida Power & Light, St. Lucie Power Plant 2/12/2021 14:52 Page 2 of 3 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Batch Mode Unit: PSL2 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Gases Ar-41 Ci 3.77E+00 2.01E-01 1.93E-01 1.52E-01 4.31E+00 Kr-85m Ci 1.47E-05 0.00E+00 0.00E+00 0.00E+00 1.47E-05 Kr-88 Ci 0.00E+00 1.78E-04 0.00E+00 0.00E+00 1.78E-04 Xe-127 Ci 0.00E+00 0.00E+00 3.44E-05 0.00E+00 3.44E-05 Xe-133m Ci 2.81E-04 0.00E+00 6.90E-05 0.00E+00 3.51E-04 Xe-135 Ci 1.25E-03 4.30E-04 2.52E-04 6.86E-04 2.62E-03 Xe-133 Ci 5.88E-01 1.71E-02 2.76E-02 1.72E-02 6.50E-01 Total For Period Ci 4.35E+00 2.19E-01 2.21E-01 1.70E-01 4.96E+00 B. Iodines and Halogens I-131 Ci 3.81E-08 0.00E+00 0.00E+00 0.00E+00 3.81E-08 C. Particulates Co-58 Ci 6.87E-08 0.00E+00 0.00E+00 0.00E+00 6.87E-08 Co-60 Ci 1.14E-07 0.00E+00 0.00E+00 0.00E+00 1.14E-07 Cs-137 Ci 7.91E-06 0.00E+00 0.00E+00 0.00E+00 7.91E-06 Total For Period Ci 8.09E-06 0.00E+00 0.00E+00 0.00E+00 8.09E-06 D. Tritium H-3 Ci 2.86E+00 9.15E-02 3.57E-01 3.05E-01 3.61E+00 E. Gross Alpha No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 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 2/12/2021 14:52 Page 3 of 3 Reg. Guide 1.21, Table 1B, Gaseous Effluents - Ground Level Release - Batch Mode Unit: PSL2 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual F. Carbon-14 No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 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

Page 1 of 1 Saturday, September 11, 2021 2:04:47PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 2A, Liquid Effluents - Summation of All Releases Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Products

1. Total Release Ci 3.03E-02 3.69E-03 1.20E-03 3.33E-03 3.85E-02

2. Average Concentration uCi/mL 4.50E-10 2.09E-11 1.12E-11 1.78E-11 7.14E-11

3. Percent of Limit %

B. Tritium

1. Total Release Ci 2.71E+02 2.45E+01 3.77E+01 2.51E+01 3.58E+02

2. Average Concentration uCi/mL 4.03E-06 1.39E-07 3.50E-07 1.34E-07 6.65E-07

3. Percent of Limit %

C. Dissolved and Entrained Gases

1. Total Release Ci 5.59E-03 0.00E+00 0.00E+00 0.00E+00 5.59E-03

2. Average Concentration uCi/mL 8.32E-11 0.00E+00 0.00E+00 0.00E+00 1.04E-11

3. Percent of Limit %

D. Gross Alpha Activity

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

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

1. Total Release Liters 1.21E+07 8.86E+07 6.38E+07 9.36E+07 2.58E+08 F. Dilution Volume

1. Total Release Liters 6.72E+10 1.77E+11 1.08E+11 1.87E+11 5.39E+11 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Page 1 of 1 Saturday, September 11, 2021 2:10:20PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 2A, Liquid Effluents - Summation of All Releases Unit: PSL1 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Products

1. Total Release Ci 1.51E-02 1.85E-03 6.00E-04 1.66E-03 1.92E-02

2. Average Concentration uCi/mL 4.50E-10 2.09E-11 1.12E-11 1.78E-11 7.14E-11

3. Percent of Limit %

B. Tritium

1. Total Release Ci 1.35E+02 1.22E+01 1.88E+01 1.25E+01 1.79E+02

2. Average Concentration uCi/mL 4.03E-06 1.39E-07 3.50E-07 1.34E-07 6.65E-07

3. Percent of Limit %

C. Dissolved and Entrained Gases

1. Total Release Ci 2.79E-03 0.00E+00 0.00E+00 0.00E+00 2.79E-03

2. Average Concentration uCi/mL 8.32E-11 0.00E+00 0.00E+00 0.00E+00 1.04E-11

3. Percent of Limit %

D. Gross Alpha Activity

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

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

1. Total Release Liters 6.06E+06 4.43E+07 3.19E+07 4.68E+07 1.29E+08 F. Dilution Volume

1. Total Release Liters 3.36E+10 8.83E+10 5.38E+10 9.37E+10 2.69E+11 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Page 1 of 1 Saturday, September 11, 2021 2:16:10PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 2A, Liquid Effluents - Summation of All Releases Unit: PSL2 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Total Release Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Uncertainty A. Fission and Activation Products

1. Total Release Ci 1.51E-02 1.85E-03 6.00E-04 1.66E-03 1.92E-02

2. Average Concentration uCi/mL 4.50E-10 2.09E-11 1.12E-11 1.78E-11 7.14E-11

3. Percent of Limit %

B. Tritium

1. Total Release Ci 1.35E+02 1.22E+01 1.88E+01 1.25E+01 1.79E+02

2. Average Concentration uCi/mL 4.03E-06 1.39E-07 3.50E-07 1.34E-07 6.65E-07

3. Percent of Limit %

C. Dissolved and Entrained Gases

1. Total Release Ci 2.79E-03 0.00E+00 0.00E+00 0.00E+00 2.79E-03

2. Average Concentration uCi/mL 8.32E-11 0.00E+00 0.00E+00 0.00E+00 1.04E-11

3. Percent of Limit %

D. Gross Alpha Activity

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

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

1. Total Release Liters 6.06E+06 4.43E+07 3.19E+07 4.68E+07 1.29E+08 F. Dilution Volume

1. Total Release Liters 3.36E+10 8.83E+10 5.38E+10 9.37E+10 2.69E+11 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Page 1 of 3 Saturday, September 11, 2021 3:01:28PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 2B, Liquid Effluents - Continuous Mode Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 Continuous Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Products No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 B. Tritium No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 C. Dissolved and Entrained Gases No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Gross Alpha Activity No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 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 9/11/2021 15:01 Page 2 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Products C-14 Ci 6.14E-03 3.75E-04 0.00E+00 1.07E-03 7.58E-03 Na-24 Ci 4.44E-05 1.84E-05 0.00E+00 0.00E+00 6.28E-05 Be-7 Ci 0.00E+00 4.86E-05 2.58E-05 3.05E-05 1.05E-04 Cr-51 Ci 1.09E-04 4.78E-05 0.00E+00 0.00E+00 1.57E-04 Mn-54 Ci 3.77E-04 1.92E-05 1.78E-05 4.12E-06 4.18E-04 Fe-59 Ci 3.77E-05 0.00E+00 0.00E+00 0.00E+00 3.77E-05 Co-58 Ci 1.23E-03 4.13E-04 1.75E-04 6.83E-05 1.89E-03 Co-60 Ci 1.19E-02 5.82E-04 4.25E-04 3.26E-04 1.33E-02 Ni-63 Ci 0.00E+00 2.34E-04 2.36E-04 2.58E-04 7.28E-04 Zn-65 Ci 7.21E-05 1.64E-05 1.05E-05 0.00E+00 9.90E-05 Zr-95 Ci 6.21E-05 1.97E-05 7.80E-06 3.32E-06 9.29E-05 Nb-95 Ci 1.75E-04 5.47E-05 2.93E-05 5.68E-06 2.64E-04 Nb-97 Ci 3.93E-04 4.13E-05 5.29E-05 6.13E-05 5.48E-04 Ag-110m Ci 2.85E-04 3.59E-05 5.45E-05 4.15E-05 4.17E-04 Sn-117m Ci 0.00E+00 1.90E-05 0.00E+00 0.00E+00 1.90E-05 Sb-124 Ci 2.32E-03 6.63E-04 1.94E-05 6.25E-05 3.06E-03 Sb-122 Ci 3.29E-04 0.00E+00 0.00E+00 0.00E+00 3.29E-04 Sb-125 Ci 4.37E-03 1.08E-03 1.35E-04 1.40E-03 6.98E-03 Te-123m Ci 4.67E-04 1.51E-05 0.00E+00 0.00E+00 4.82E-04 Te-129m Ci 9.85E-04 0.00E+00 0.00E+00 0.00E+00 9.85E-04 Te-129 Ci 1.22E-04 0.00E+00 0.00E+00 0.00E+00 1.22E-04 Te-132 Ci 1.65E-04 0.00E+00 2.08E-06 4.21E-06 1.71E-04 I-130 Ci 3.06E-06 0.00E+00 0.00E+00 0.00E+00 3.06E-06 I-131 Ci 8.95E-05 0.00E+00 1.54E-06 0.00E+00 9.10E-05 I-132 Ci 1.54E-04 0.00E+00 0.00E+00 0.00E+00 1.54E-04 I-133 Ci 0.00E+00 0.00E+00 3.16E-06 0.00E+00 3.16E-06 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 9/11/2021 15:01 Page 3 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Cs-137 Ci 1.41E-04 5.82E-06 3.25E-06 0.00E+00 1.50E-04 La-140 Ci 2.55E-04 0.00E+00 0.00E+00 0.00E+00 2.55E-04 W-187 Ci 1.39E-05 0.00E+00 0.00E+00 0.00E+00 1.39E-05 Total For Period Ci 3.03E-02 3.69E-03 1.20E-03 3.33E-03 3.85E-02 B. Tritium H-3 Ci 2.71E+02 2.45E+01 3.77E+01 2.51E+01 3.58E+02 C. Dissolved and Entrained Gases Xe-135 Ci 5.02E-05 0.00E+00 0.00E+00 0.00E+00 5.02E-05 Xe-133m Ci 4.26E-05 0.00E+00 0.00E+00 0.00E+00 4.26E-05 Xe-133 Ci 5.50E-03 0.00E+00 0.00E+00 0.00E+00 5.50E-03 Total For Period Ci 5.59E-03 0.00E+00 0.00E+00 0.00E+00 5.59E-03 D. Gross Alpha Activity No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

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Page 1 of 3 Saturday, September 11, 2021 3:04:35PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 2B, Liquid Effluents - Continuous Mode Unit: PSL1 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Continuous Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Products No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 B. Tritium No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 C. Dissolved and Entrained Gases No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Gross Alpha Activity No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 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 9/11/2021 15:04 Page 2 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: PSL1 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Products C-14 Ci 3.07E-03 1.87E-04 0.00E+00 5.34E-04 3.79E-03 Na-24 Ci 2.22E-05 9.20E-06 0.00E+00 0.00E+00 3.14E-05 Be-7 Ci 0.00E+00 2.43E-05 1.29E-05 1.53E-05 5.25E-05 Cr-51 Ci 5.47E-05 2.39E-05 0.00E+00 0.00E+00 7.86E-05 Mn-54 Ci 1.88E-04 9.62E-06 8.91E-06 2.06E-06 2.09E-04 Fe-59 Ci 1.88E-05 0.00E+00 0.00E+00 0.00E+00 1.88E-05 Co-58 Ci 6.15E-04 2.07E-04 8.74E-05 3.41E-05 9.43E-04 Co-60 Ci 5.97E-03 2.91E-04 2.13E-04 1.63E-04 6.64E-03 Ni-63 Ci 0.00E+00 1.17E-04 1.18E-04 1.29E-04 3.64E-04 Zn-65 Ci 3.60E-05 8.20E-06 5.25E-06 0.00E+00 4.95E-05 Zr-95 Ci 3.11E-05 9.83E-06 3.90E-06 1.66E-06 4.64E-05 Nb-95 Ci 8.73E-05 2.74E-05 1.47E-05 2.84E-06 1.32E-04 Nb-97 Ci 1.96E-04 2.07E-05 2.65E-05 3.06E-05 2.74E-04 Ag-110m Ci 1.42E-04 1.79E-05 2.72E-05 2.07E-05 2.08E-04 Sn-117m Ci 0.00E+00 9.52E-06 0.00E+00 0.00E+00 9.52E-06 Sb-124 Ci 1.16E-03 3.31E-04 9.69E-06 3.12E-05 1.53E-03 Sb-122 Ci 1.64E-04 0.00E+00 0.00E+00 0.00E+00 1.64E-04 Sb-125 Ci 2.18E-03 5.41E-04 6.76E-05 6.99E-04 3.49E-03 Te-123m Ci 2.34E-04 7.57E-06 0.00E+00 0.00E+00 2.41E-04 Te-129m Ci 4.92E-04 0.00E+00 0.00E+00 0.00E+00 4.92E-04 Te-129 Ci 6.08E-05 0.00E+00 0.00E+00 0.00E+00 6.08E-05 Te-132 Ci 8.25E-05 0.00E+00 1.04E-06 2.11E-06 8.57E-05 I-130 Ci 1.53E-06 0.00E+00 0.00E+00 0.00E+00 1.53E-06 I-131 Ci 4.47E-05 0.00E+00 7.72E-07 0.00E+00 4.55E-05 I-132 Ci 7.68E-05 0.00E+00 0.00E+00 0.00E+00 7.68E-05 I-133 Ci 0.00E+00 0.00E+00 1.58E-06 0.00E+00 1.58E-06 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 9/11/2021 15:04 Page 3 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: PSL1 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Cs-137 Ci 7.03E-05 2.91E-06 1.62E-06 0.00E+00 7.48E-05 La-140 Ci 1.28E-04 0.00E+00 0.00E+00 0.00E+00 1.28E-04 W-187 Ci 6.93E-06 0.00E+00 0.00E+00 0.00E+00 6.93E-06 Total For Period Ci 1.51E-02 1.85E-03 6.00E-04 1.66E-03 1.92E-02 B. Tritium H-3 Ci 1.35E+02 1.22E+01 1.88E+01 1.25E+01 1.79E+02 C. Dissolved and Entrained Gases Xe-135 Ci 2.51E-05 0.00E+00 0.00E+00 0.00E+00 2.51E-05 Xe-133m Ci 2.13E-05 0.00E+00 0.00E+00 0.00E+00 2.13E-05 Xe-133 Ci 2.75E-03 0.00E+00 0.00E+00 0.00E+00 2.75E-03 Total For Period Ci 2.79E-03 0.00E+00 0.00E+00 0.00E+00 2.79E-03 D. Gross Alpha Activity No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

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Page 1 of 3 Saturday, September 11, 2021 3:11:39PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, Table 2B, Liquid Effluents - Continuous Mode Unit: PSL2 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Continuous Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Products No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 B. Tritium No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 C. Dissolved and Entrained Gases No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Gross Alpha Activity No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 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 9/11/2021 15:11 Page 2 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: PSL2 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual A. Fission and Activation Products C-14 Ci 3.07E-03 1.87E-04 0.00E+00 5.34E-04 3.79E-03 Na-24 Ci 2.22E-05 9.20E-06 0.00E+00 0.00E+00 3.14E-05 Be-7 Ci 0.00E+00 2.43E-05 1.29E-05 1.53E-05 5.25E-05 Cr-51 Ci 5.47E-05 2.39E-05 0.00E+00 0.00E+00 7.86E-05 Mn-54 Ci 1.88E-04 9.62E-06 8.91E-06 2.06E-06 2.09E-04 Fe-59 Ci 1.88E-05 0.00E+00 0.00E+00 0.00E+00 1.88E-05 Co-58 Ci 6.15E-04 2.07E-04 8.74E-05 3.41E-05 9.43E-04 Co-60 Ci 5.97E-03 2.91E-04 2.13E-04 1.63E-04 6.64E-03 Ni-63 Ci 0.00E+00 1.17E-04 1.18E-04 1.29E-04 3.64E-04 Zn-65 Ci 3.60E-05 8.20E-06 5.25E-06 0.00E+00 4.95E-05 Zr-95 Ci 3.11E-05 9.83E-06 3.90E-06 1.66E-06 4.64E-05 Nb-95 Ci 8.73E-05 2.74E-05 1.47E-05 2.84E-06 1.32E-04 Nb-97 Ci 1.96E-04 2.07E-05 2.65E-05 3.06E-05 2.74E-04 Ag-110m Ci 1.42E-04 1.79E-05 2.72E-05 2.07E-05 2.08E-04 Sn-117m Ci 0.00E+00 9.52E-06 0.00E+00 0.00E+00 9.52E-06 Sb-124 Ci 1.16E-03 3.31E-04 9.69E-06 3.12E-05 1.53E-03 Sb-122 Ci 1.64E-04 0.00E+00 0.00E+00 0.00E+00 1.64E-04 Sb-125 Ci 2.18E-03 5.41E-04 6.76E-05 6.99E-04 3.49E-03 Te-123m Ci 2.34E-04 7.57E-06 0.00E+00 0.00E+00 2.41E-04 Te-129m Ci 4.92E-04 0.00E+00 0.00E+00 0.00E+00 4.92E-04 Te-129 Ci 6.08E-05 0.00E+00 0.00E+00 0.00E+00 6.08E-05 Te-132 Ci 8.25E-05 0.00E+00 1.04E-06 2.11E-06 8.57E-05 I-130 Ci 1.53E-06 0.00E+00 0.00E+00 0.00E+00 1.53E-06 I-131 Ci 4.47E-05 0.00E+00 7.72E-07 0.00E+00 4.55E-05 I-132 Ci 7.68E-05 0.00E+00 0.00E+00 0.00E+00 7.68E-05 I-133 Ci 0.00E+00 0.00E+00 1.58E-06 0.00E+00 1.58E-06 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 9/11/2021 15:11 Page 3 of 3 Reg. Guide 1.21, Table 2B, Liquid Effluents - Batch Mode Unit: PSL2 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Batch Mode Nuclides Released Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Cs-137 Ci 7.03E-05 2.91E-06 1.62E-06 0.00E+00 7.48E-05 La-140 Ci 1.28E-04 0.00E+00 0.00E+00 0.00E+00 1.28E-04 W-187 Ci 6.93E-06 0.00E+00 0.00E+00 0.00E+00 6.93E-06 Total For Period Ci 1.51E-02 1.85E-03 6.00E-04 1.66E-03 1.92E-02 B. Tritium H-3 Ci 1.35E+02 1.22E+01 1.88E+01 1.25E+01 1.79E+02 C. Dissolved and Entrained Gases Xe-135 Ci 2.51E-05 0.00E+00 0.00E+00 0.00E+00 2.51E-05 Xe-133m Ci 2.13E-05 0.00E+00 0.00E+00 0.00E+00 2.13E-05 Xe-133 Ci 2.75E-03 0.00E+00 0.00E+00 0.00E+00 2.75E-03 Total For Period Ci 2.79E-03 0.00E+00 0.00E+00 0.00E+00 2.79E-03 D. Gross Alpha Activity No Nuclides Found Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 If Not Detected, Nuclide is Not Reported. Zeroes in this table indicates that no radioactivity was present at detectable levels.

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L-2021-225 Enclosure TABLE 3.2 SOLID WASTE STORAGE AND SHIPMENTS (7 PAGES)

This portion of the 2020 Annual Radioactive Effluent Release Report was originally submitted with L-2021-049 on March 1, 2021. It is included unchanged with this correction letter for context and completeness.

WMG Suite 9.4.1 Reg Guide Activity Report Report Date: 02/18/2021 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: 01/01/2020 to 12/31/2020 Percent Cutoff: 1.0%

n-54 Fe-55 Co-58 H-3 C-14 Cr-51 Mn-54 Fe-55 Co-58

WMG Suite 9.4.1 Reg Guide Activity Report Report Date: 02/18/2021 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: 01/01/2020 to 12/31/2020 Percent Cutoff: 1.0%

H-3 6.32% 9.95E-01 C-14 1.03% 1.62E-01 Cr-51 2.22E-01 Mn-54 2.07E-01 Fe-55 7.14E-01 Co-58 Co-60 Ni-63 Sb-124 Sb-125

WMG Suite 9.4.1 Reg Guide Report Report Date: 02/18/2021 During Period From: 01/01/2020 to 12/31/2020 Total Shipments by Carrier Number of Shipments per each carrier Energy Solutions LLC (Bulk)

Interstate Exit 49 2 Hittman Transport (TN) Energy Solutions, (DTK) Gallaher Road

_____ 628

, _~

Gallaher Road

-- ~-~ -~--~------ --

14 Hittman Transport (TN) EnergySolutions Bear Creek 1560 Bear Creek Road Hittman Transport (TN) Energy Solutions, (DTK) Gallaher Road 628 Gallaher Road 4 Hittman Transport (TN)

WMG Suite 9.4.1 NRC Regulatory Guide 1.21 Report Report date: 2/18/2021 Shipment and Package Summary Solid Waste Shipped Offsite for Disposal During Period from: 1/1/2020 to 12/31/2020 3/9/2020 FPL/PSL 20-031 Energy Solutions, (DTK) Gallaher Road Page 1of4

WMG Suite 9.4.1 NRC Regulatory Guide 1.21 Report Report date: 2/18/2021 Shipment and Package Summary Solid Waste Shipped Offsite for Disposal During Period from: 1/1/2020 to 12/31/2020 EnergySolutions ESU U600054 Bear Creek Page 2 of 4

L-2021-225 Enclosure TABLE 3.3 DOSE ASSESSMENTS (28 PAGES)

This portion of the 2020 Annual Radioactive Effluent Release Report was originally submitted with L-2021-049 on March 1, 2021. The attached table has been corrected and replaced in its entirety.

Page 1 of 1 Friday, February 12, 2021 3:01:16PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, App B, Sec Doses due to Radioiodines, Tritium, and Particulates in Gaseous Releases Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone mRem 1.62E-03 5.85E-03 1.49E-03 1.49E-03 1.05E-02 Limit mRem Percent of Limit %

Liver mRem 2.38E-03 5.64E-03 1.28E-03 1.28E-03 1.06E-02 Limit mRem Percent of Limit %

Total Body mRem 2.38E-03 5.64E-03 1.28E-03 1.28E-03 1.06E-02 Limit mRem Percent of Limit %

Thyroid mRem 2.40E-03 5.64E-03 1.28E-03 1.28E-03 1.06E-02 Limit mRem Percent of Limit %

Kidney mRem 9.64E-04 4.56E-03 1.85E-04 1.84E-04 5.89E-03 Limit mRem Percent of Limit %

Lung mRem 2.40E-03 5.84E-03 1.28E-03 1.28E-03 1.08E-02 Limit mRem Percent of Limit %

GI-Lli mRem 2.38E-03 5.64E-03 1.28E-03 1.28E-03 1.06E-02 Limit mRem Percent of Limit %

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Page 1 of 1 Friday, February 12, 2021 3:00:03PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, App B, Sec Doses due to Radioiodines, Tritium, and Particulates in Gaseous Releases Unit: PSL1 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone mRem 1.13E-03 5.12E-03 7.42E-04 7.47E-04 7.73E-03 Limit mRem Percent of Limit %

Liver mRem 1.02E-03 5.01E-03 6.42E-04 6.45E-04 7.32E-03 Limit mRem Percent of Limit %

Total Body mRem 1.02E-03 5.01E-03 6.42E-04 6.45E-04 7.32E-03 Limit mRem Percent of Limit %

Thyroid mRem 1.02E-03 5.01E-03 6.42E-04 6.45E-04 7.32E-03 Limit mRem Percent of Limit %

Kidney mRem 4.78E-04 4.47E-03 9.32E-05 9.31E-05 5.13E-03 Limit mRem Percent of Limit %

Lung mRem 1.04E-03 5.21E-03 6.42E-04 6.45E-04 7.53E-03 Limit mRem Percent of Limit %

GI-Lli mRem 1.02E-03 5.01E-03 6.42E-04 6.45E-04 7.32E-03 Limit mRem Percent of Limit %

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Page 1 of 1 Friday, February 12, 2021 3:00:44PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, App B, Sec Doses due to Radioiodines, Tritium, and Particulates in Gaseous Releases Unit: PSL2 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone mRem 4.94E-04 7.36E-04 7.45E-04 7.42E-04 2.72E-03 Limit mRem Percent of Limit %

Liver mRem 1.36E-03 6.27E-04 6.40E-04 6.37E-04 3.26E-03 Limit mRem Percent of Limit %

Total Body mRem 1.36E-03 6.27E-04 6.40E-04 6.37E-04 3.26E-03 Limit mRem Percent of Limit %

Thyroid mRem 1.37E-03 6.27E-04 6.40E-04 6.37E-04 3.28E-03 Limit mRem Percent of Limit %

Kidney mRem 4.86E-04 8.82E-05 9.18E-05 9.10E-05 7.57E-04 Limit mRem Percent of Limit %

Lung mRem 1.36E-03 6.27E-04 6.40E-04 6.37E-04 3.26E-03 Limit mRem Percent of Limit %

GI-Lli mRem 1.36E-03 6.27E-04 6.40E-04 6.37E-04 3.26E-03 Limit mRem Percent of Limit %

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Page 1 of 1 Saturday, September 11, 2021 3:59:16PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, App B, Sec Air Doses Due To Gaseous Releases Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 NG Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Gamma Air mRad 3.28E-03 1.32E-04 1.25E-04 1.22E-04 3.66E-03 Limit mRad Percent of Limit %

Beta Air mRad 1.19E-03 5.02E-05 4.56E-05 4.43E-05 1.33E-03 Limit mRad Percent of Limit %

NG Total Body mRem 3.12E-03 1.25E-04 1.19E-04 1.16E-04 3.48E-03 Limit mRem Percent of Limit %

NG Skin mRem 4.56E-03 1.86E-04 1.74E-04 1.70E-04 5.09E-03 Limit mRem Percent of Limit %

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Page 1 of 1 Saturday, September 11, 2021 4:02:34PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, App B, Sec Air Doses Due To Gaseous Releases Unit: PSL1 Starting: 1-Jan-2020 Ending: 31-Dec-2020 NG Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Gamma Air mRad 5.03E-05 3.65E-05 3.32E-05 5.03E-05 1.70E-04 Limit mRad Percent of Limit %

Beta Air mRad 2.12E-05 1.57E-05 1.20E-05 1.81E-05 6.71E-05 Limit mRad Percent of Limit %

NG Total Body mRem 4.77E-05 3.47E-05 3.15E-05 4.78E-05 1.62E-04 Limit mRem Percent of Limit %

NG Skin mRem 7.07E-05 5.35E-05 4.62E-05 7.00E-05 2.40E-04 Limit mRem Percent of Limit %

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Page 1 of 1 Saturday, September 11, 2021 3:16:42PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, App B, Sec Doses to a member of the public due to Liquid Releases Unit: Site Starting: 1-Jan-2020 Ending: 31-Dec-2020 Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone mRem 8.06E-04 1.92E-04 1.43E-04 3.17E-04 1.46E-03 Limit mRem Percent of Limit %

Liver mRem 3.43E-03 2.68E-04 1.47E-04 2.41E-04 4.09E-03 Limit mRem Percent of Limit %

Total Body mRem 3.57E-03 2.15E-04 1.46E-04 2.52E-04 4.18E-03 Limit mRem Percent of Limit %

Thyroid mRem 2.31E-03 9.38E-05 1.05E-04 2.10E-04 2.72E-03 Limit mRem Percent of Limit %

Kidney mRem 3.02E-03 2.06E-04 1.46E-04 2.28E-04 3.60E-03 Limit mRem Percent of Limit %

Lung mRem 4.37E-03 3.72E-04 1.44E-04 8.30E-04 5.72E-03 Limit mRem Percent of Limit %

GI-Lli mRem 1.77E-02 1.84E-03 1.17E-03 9.90E-04 2.17E-02 Limit mRem Percent of Limit %

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Page 1 of 1 Saturday, September 11, 2021 3:24:34PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, App B, Sec Doses to a member of the public due to Liquid Releases Unit: PSL1 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone mRem 4.03E-04 9.61E-05 7.13E-05 1.58E-04 7.29E-04 Limit mRem Percent of Limit %

Liver mRem 1.72E-03 1.34E-04 7.35E-05 1.21E-04 2.04E-03 Limit mRem Percent of Limit %

Total Body mRem 1.78E-03 1.08E-04 7.32E-05 1.26E-04 2.09E-03 Limit mRem Percent of Limit %

Thyroid mRem 1.15E-03 4.69E-05 5.27E-05 1.05E-04 1.36E-03 Limit mRem Percent of Limit %

Kidney mRem 1.51E-03 1.03E-04 7.31E-05 1.14E-04 1.80E-03 Limit mRem Percent of Limit %

Lung mRem 2.19E-03 1.86E-04 7.18E-05 4.15E-04 2.86E-03 Limit mRem Percent of Limit %

GI-Lli mRem 8.84E-03 9.18E-04 5.84E-04 4.95E-04 1.08E-02 Limit mRem Percent of Limit %

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Page 1 of 1 Saturday, September 11, 2021 3:26:55PM Florida Power & Light St. Lucie Power Plant Reg. Guide 1.21, App B, Sec Doses to a member of the public due to Liquid Releases Unit: PSL2 Starting: 1-Jan-2020 Ending: 31-Dec-2020 Organ Dose Units 1ST Quarter 2ND Quarter 3RD Quarter 4TH Quarter Annual Bone mRem 4.03E-04 9.61E-05 7.13E-05 1.58E-04 7.29E-04 Limit mRem Percent of Limit %

Liver mRem 1.72E-03 1.34E-04 7.35E-05 1.21E-04 2.04E-03 Limit mRem Percent of Limit %

Total Body mRem 1.78E-03 1.08E-04 7.32E-05 1.26E-04 2.09E-03 Limit mRem Percent of Limit %

Thyroid mRem 1.15E-03 4.69E-05 5.27E-05 1.05E-04 1.36E-03 Limit mRem Percent of Limit %

Kidney mRem 1.51E-03 1.03E-04 7.31E-05 1.14E-04 1.80E-03 Limit mRem Percent of Limit %

Lung mRem 2.19E-03 1.86E-04 7.18E-05 4.15E-04 2.86E-03 Limit mRem Percent of Limit %

GI-Lli mRem 8.84E-03 9.18E-04 5.84E-04 4.95E-04 1.08E-02 Limit mRem Percent of Limit %

User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Florida Power & Light St. Lucie Power Plant Liquid Status Summary Report Saturday, September 11, 2021 16:18 Page 1 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: Site Release Release Release Dilution Duration Volume Flowrate Flowrate Permit Number Status/Alloc Release Source Start Date (min) (gal) (gpm) (gpm)

L-20-002-B Closed/100.00 B Waste Monitor Tank 01/16/2020 17:07 4.680E+02 2.040E+04 1.700E+02 5.130E+05 L-20-003-B Closed/100.00 B Waste Monitor Tank 01/18/2020 13:55 8.250E+02 2.800E+04 1.700E+02 1.026E+06 L-20-004-B Closed/100.00 B Waste Monitor Tank 01/23/2020 00:48 8.520E+02 2.840E+04 1.700E+02 5.130E+05 L-20-005-B Closed/100.00 A Waste Monitor Tank 01/31/2020 14:35 7.930E+02 2.760E+04 1.700E+02 5.130E+05 L-20-006-B Closed/100.00 B Waste Monitor Tank 02/01/2020 12:20 7.630E+02 2.720E+04 1.700E+02 1.026E+06 L-20-007-B Closed/100.00 A Waste Monitor Tank 02/03/2020 20:50 6.650E+02 2.240E+04 1.700E+02 1.026E+06 L-20-008-B Closed/100.00 B Waste Monitor Tank 02/05/2020 22:00 8.690E+02 2.520E+04 1.700E+02 1.026E+06 L-20-009-B Closed/100.00 A Waste Monitor Tank 02/12/2020 02:38 7.400E+02 2.600E+04 1.700E+02 1.026E+06 L-20-010-B Closed/100.00 B Waste Monitor Tank 02/13/2020 01:50 8.250E+02 2.720E+04 1.700E+02 1.026E+06 L-20-011-B Closed/100.00 A Waste Monitor Tank 02/14/2020 08:55 7.610E+02 2.800E+04 1.700E+02 1.026E+06 L-20-012-B Closed/100.00 B Waste Monitor Tank 02/16/2020 12:40 7.200E+02 2.720E+04 1.700E+02 1.026E+06 L-20-013-B Closed/100.00 A Waste Monitor Tank 02/17/2020 16:55 7.350E+02 4.000E+04 1.700E+02 7.840E+05 L-20-014-B Closed/100.00 B Waste Monitor Tank 02/19/2020 16:15 7.540E+02 2.760E+04 1.700E+02 5.275E+05 L-20-015-B Closed/100.00 A Waste Monitor Tank 02/24/2020 10:40 8.500E+02 2.960E+04 1.700E+02 5.275E+05 L-20-016-B Closed/100.00 B Waste Monitor Tank 02/25/2020 23:50 8.900E+02 2.920E+04 1.700E+02 5.275E+05 L-20-017-B Closed/100.00 A Waste Monitor Tank 02/29/2020 05:19 7.580E+02 2.960E+04 1.700E+02 5.130E+05 L-20-018-B Closed/100.00 B Waste Monitor Tank 03/07/2020 01:20 8.500E+02 2.880E+04 3.388E+01 5.275E+05 L-20-019-B Closed/100.00 A Waste Monitor Tank 03/14/2020 15:15 7.050E+02 2.760E+04 3.915E+01 7.840E+05 L-20-021-B Closed/100.00 B Waste Monitor Tank 03/18/2020 22:45 8.550E+02 3.000E+04 3.509E+01 5.130E+05 L-20-022-B Closed/100.00 A Waste Monitor Tank 03/26/2020 14:50 6.900E+02 2.720E+04 3.942E+01 1.026E+06 L-20-023-B Closed/100.00 B Waste Monitor Tank 04/02/2020 13:45 7.510E+02 2.960E+04 3.941E+01 1.026E+06 L-20-024-B Closed/100.00 A Waste Monitor Tank 05/20/2020 13:33 7.620E+02 2.960E+04 1.700E+02 1.026E+06 L-20-025-B Closed/100.00 B Waste Monitor Tank 05/28/2020 13:55 6.510E+02 2.200E+04 1.700E+02 1.026E+06 L-20-026-B Closed/100.00 A Waste Monitor Tank 07/08/2020 20:31 7.910E+02 2.880E+04 3.641E+01 1.026E+06 L-20-027-B Closed/100.00 B Waste Monitor Tank 07/24/2020 13:04 7.990E+02 2.640E+04 3.304E+01 1.026E+06 L-20-028-B Closed/100.00 A Waste Monitor Tank 07/31/2020 04:35 5.650E+02 1.720E+04 3.044E+01 1.026E+06 L-20-029-B Closed/100.00 B Waste Monitor Tank 08/21/2020 11:50 9.260E+02 2.720E+04 1.700E+02 1.026E+06 L-20-030-B Closed/100.00 A Waste Monitor Tank 08/28/2020 13:48 7.170E+02 2.160E+04 1.700E+02 1.026E+06 L-20-031-B Closed/100.00 B Waste Monitor Tank 09/24/2020 14:38 7.020E+02 2.400E+04 1.700E+02 1.026E+06 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Liquid Status Summary Report Saturday, September 11, 2021 16:18 Page 2 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: Site Release Release Release Dilution Duration Volume Flowrate Flowrate Permit Number Status/Alloc Release Source Start Date (min) (gal) (gpm) (gpm)

L-20-032-B Closed/100.00 A Waste Monitor Tank 09/26/2020 10:07 7.130E+02 2.240E+04 1.700E+02 1.026E+06 L-20-034-B Closed/100.00 B Waste Monitor Tank 10/01/2020 01:47 8.630E+02 2.400E+04 1.700E+02 1.026E+06 L-20-035-B Closed/100.00 A Waste Monitor Tank 10/09/2020 12:17 8.470E+02 2.480E+04 1.700E+02 1.026E+06 L-20-036-B Closed/100.00 South Pond 10/21/2020 06:45 7.275E+03 4.157E+06 5.715E+02 1.026E+06 L-20-037-B Closed/100.00 South Pond 10/08/2020 13:00 8.340E+03 5.034E+06 6.036E+02 1.026E+06 L-20-038-B Closed/100.00 South Pond 10/01/2020 15:36 9.924E+03 5.141E+06 5.180E+02 1.026E+06 L-20-039-B Closed/100.00 South Pond 08/21/2020 15:00 7.215E+03 4.678E+06 6.484E+02 1.026E+06 L-20-040-B Closed/100.00 South Pond 06/11/2020 08:00 6.120E+03 6.872E+04 1.123E+01 1.026E+06 L-20-041-B Closed/100.00 South Pond 06/03/2020 15:39 8.121E+03 7.513E+06 9.251E+02 1.026E+06 L-20-042-B Closed/100.00 South Pond 02/07/2020 07:30 5.760E+03 2.644E+06 4.591E+02 1.026E+06 L-20-043-B Closed/100.00 South Pond 05/25/2020 15:30 9.750E+03 1.374E+07 1.409E+03 1.026E+06 L-20-044-B Closed/100.00 South Pond 05/15/2020 06:30 9.270E+03 8.515E+05 9.186E+01 1.026E+06 L-20-046-B Closed/100.00 South Pond 07/23/2020 16:00 5.280E+03 5.082E+06 9.625E+02 1.026E+06 L-20-047-B Closed/100.00 South Pond 07/30/2020 16:00 9.960E+03 6.914E+06 6.942E+02 1.026E+06 L-20-048-B Closed/100.00 South Pond 06/18/2020 08:30 1.002E+04 1.155E+06 1.153E+02 1.026E+06 L-20-049-B Closed/100.00 South Pond 11/05/2020 07:45 8.565E+03 5.163E+06 6.027E+02 1.026E+06 L-20-050-B Closed/100.00 South Pond 11/11/2020 09:30 1.002E+04 5.077E+06 5.067E+02 1.026E+06 L-20-051-B Closed/100.00 B Waste Monitor Tank 12/17/2020 02:38 7.270E+02 2.960E+04 1.700E+02 5.130E+05 L-20-052-B Closed/100.00 A Waste Monitor Tank 12/19/2020 12:29 5.810E+02 2.400E+04 1.700E+02 1.026E+06 L-20-053-B Closed/100.00 B Waste Monitor Tank 12/23/2020 14:00 6.700E+02 2.600E+04 1.700E+02 1.026E+06 L-20-054-B Closed/100.00 A Waste Monitor Tank 12/29/2020 22:36 7.740E+02 2.920E+04 1.700E+02 1.026E+06 Total Release Volume: 6.818E+07 gal Total Dilution Volume: 1.422E+11 gal User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Liquid Status Summary Report Saturday, September 11, 2021 16:18 Page 3 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: Site Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL Xe-135 N 5.015E+01 1.943E-10 9.716E-08 9.310E-14 4.655E-11 Xe-133 N 5.496E+03 2.129E-08 1.065E-05 1.020E-11 5.101E-09 Xe-133m N 4.263E+01 1.652E-10 8.258E-08 7.913E-14 3.956E-11 Nuclide Type Total 5.588E+03 2.165E-08 1.083E-05 1.037E-11 5.187E-09 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL H-3 O 3.582E+08 1.388E-03 1.388E-01 6.649E-07 6.649E-05 Ni-63 O 7.276E+02 2.819E-09 2.819E-06 1.351E-12 1.351E-09 C-14 O 7.581E+03 2.937E-08 9.791E-05 1.407E-11 4.691E-08 Nuclide Type Total 3.582E+08 1.388E-03 1.389E-01 6.650E-07 6.654E-05 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL Sb-125 P 6.980E+03 2.704E-08 9.014E-05 1.296E-11 4.319E-08 Cr-51 P 1.573E+02 6.094E-10 1.219E-07 2.920E-13 5.839E-11 Co-58 P 1.886E+03 7.306E-09 3.653E-05 3.500E-12 1.750E-08 Sb-124 P 3.064E+03 1.187E-08 1.696E-04 5.687E-12 8.125E-08 Te-129 P 1.216E+02 4.711E-10 1.178E-07 2.257E-13 5.643E-11 Zr-95 P 9.289E+01 3.599E-10 1.800E-06 1.724E-13 8.622E-10 Co-60 P 1.327E+04 5.142E-08 1.714E-03 2.464E-11 8.212E-07 Fe-59 P 3.768E+01 1.460E-10 1.460E-06 6.994E-14 6.994E-10 Nb-95 P 2.643E+02 1.024E-09 3.413E-06 4.906E-13 1.635E-09 Cs-137 P 1.497E+02 5.798E-10 5.798E-05 2.778E-13 2.778E-08 Zn-65 P 9.898E+01 3.835E-10 7.670E-06 1.837E-13 3.675E-09 Sb-122 P 3.287E+02 1.274E-09 1.274E-05 6.101E-13 6.101E-09 Ag-110m P 4.167E+02 1.614E-09 2.691E-05 7.735E-13 1.289E-08 W-187 P 1.387E+01 5.373E-11 1.791E-07 2.574E-14 8.581E-11 Te-132 P 1.713E+02 6.637E-10 7.375E-06 3.180E-13 3.533E-09 La-140 P 2.551E+02 9.883E-10 1.098E-05 4.735E-13 5.261E-09 Be-7 P 1.049E+02 4.066E-10 0.000E+00 1.948E-13 0.000E+00 Te-123m P 4.823E+02 1.869E-09 0.000E+00 8.953E-13 0.000E+00 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Liquid Status Summary Report Saturday, September 11, 2021 16:18 Page 4 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: Site Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL Mn-54 P 4.179E+02 1.619E-09 5.397E-06 7.757E-13 2.586E-09 Sn-117m P 1.905E+01 7.380E-11 0.000E+00 3.536E-14 0.000E+00 Nb-97 P 5.481E+02 2.124E-09 7.079E-07 1.018E-12 3.392E-10 Te-129m P 9.849E+02 3.816E-09 5.452E-05 1.828E-12 2.612E-08 Na-24 P 6.279E+01 2.433E-10 4.866E-07 1.166E-13 2.331E-10 Nuclide Type Total 2.993E+04 1.160E-07 2.202E-03 5.556E-11 1.055E-06 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL I-132 R 1.536E+02 5.953E-10 5.953E-07 2.852E-13 2.852E-10 I-131 R 9.100E+01 3.526E-10 3.526E-05 1.689E-13 1.689E-08 I-130 R 3.059E+00 1.185E-11 5.925E-08 5.678E-15 2.839E-11 I-133 R 3.162E+00 1.225E-11 1.750E-07 5.869E-15 8.384E-11 Nuclide Type Total 2.509E+02 9.720E-10 3.609E-05 4.657E-13 1.729E-08 Total 3.582E+08 1.388E-03 1.411E-01 6.650E-07 6.762E-05 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Liquid Status Summary Report Saturday, September 11, 2021 16:18 Page 5 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: Site Liquid Dose Summary - Note: All Doses in mRem Receptor Agegroup Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin Liquid Receptor - Teenager Teenager 1.457E-03 4.087E-03 4.180E-03 2.718E-03 3.598E-03 5.716E-03 2.167E-02 0.000E+00 Liquid Recptor - Child Child 1.169E-03 3.284E-03 3.866E-03 2.549E-03 1.568E-03 3.739E-03 9.857E-03 0.000E+00 Maximum Dose by Organ: 1.457E-03 4.087E-03 4.180E-03 2.718E-03 3.598E-03 5.716E-03 2.167E-02 0.000E+00 Maximum Organ Dose (mRem): 2.167E-02 Maximum Total Body Dose (mRem): 4.180E-03 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Liquid Status Summary Report Saturday, September 11, 2021 16:24 Page 3 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: PSL1 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL Xe-133 N 2.748E+03 2.129E-08 1.065E-05 1.020E-11 5.101E-09 Xe-135 N 2.508E+01 1.943E-10 9.716E-08 9.310E-14 4.655E-11 Xe-133m N 2.131E+01 1.652E-10 8.258E-08 7.913E-14 3.956E-11 Nuclide Type Total 2.794E+03 2.165E-08 1.083E-05 1.037E-11 5.187E-09 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL C-14 O 3.790E+03 2.937E-08 9.791E-05 1.407E-11 4.691E-08 H-3 O 1.791E+08 1.388E-03 1.388E-01 6.649E-07 6.649E-05 Ni-63 O 3.638E+02 2.819E-09 2.819E-06 1.351E-12 1.351E-09 Nuclide Type Total 1.791E+08 1.388E-03 1.389E-01 6.650E-07 6.654E-05 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL Zr-95 P 4.645E+01 3.599E-10 1.800E-06 1.724E-13 8.622E-10 Nb-97 P 2.741E+02 2.124E-09 7.079E-07 1.018E-12 3.392E-10 Ag-110m P 2.083E+02 1.614E-09 2.691E-05 7.735E-13 1.289E-08 Te-129m P 4.925E+02 3.816E-09 5.452E-05 1.828E-12 2.612E-08 Te-123m P 2.411E+02 1.869E-09 0.000E+00 8.953E-13 0.000E+00 Cs-137 P 7.483E+01 5.798E-10 5.798E-05 2.778E-13 2.778E-08 Te-132 P 8.565E+01 6.637E-10 7.375E-06 3.180E-13 3.533E-09 Sn-117m P 9.524E+00 7.380E-11 0.000E+00 3.536E-14 0.000E+00 Fe-59 P 1.884E+01 1.460E-10 1.460E-06 6.994E-14 6.994E-10 Nb-95 P 1.321E+02 1.024E-09 3.413E-06 4.906E-13 1.635E-09 Sb-122 P 1.643E+02 1.274E-09 1.274E-05 6.101E-13 6.101E-09 Co-60 P 6.636E+03 5.142E-08 1.714E-03 2.464E-11 8.212E-07 Sb-124 P 1.532E+03 1.187E-08 1.696E-04 5.687E-12 8.125E-08 W-187 P 6.934E+00 5.373E-11 1.791E-07 2.574E-14 8.581E-11 Be-7 P 5.247E+01 4.066E-10 0.000E+00 1.948E-13 0.000E+00 Te-129 P 6.079E+01 4.711E-10 1.178E-07 2.257E-13 5.643E-11 Zn-65 P 4.949E+01 3.835E-10 7.670E-06 1.837E-13 3.675E-09 Na-24 P 3.140E+01 2.433E-10 4.866E-07 1.166E-13 2.331E-10 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Liquid Status Summary Report Saturday, September 11, 2021 16:24 Page 4 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: PSL1 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL Cr-51 P 7.864E+01 6.094E-10 1.219E-07 2.920E-13 5.839E-11 Co-58 P 9.428E+02 7.306E-09 3.653E-05 3.500E-12 1.750E-08 La-140 P 1.275E+02 9.883E-10 1.098E-05 4.735E-13 5.261E-09 Sb-125 P 3.490E+03 2.704E-08 9.014E-05 1.296E-11 4.319E-08 Mn-54 P 2.089E+02 1.619E-09 5.397E-06 7.757E-13 2.586E-09 Nuclide Type Total 1.496E+04 1.160E-07 2.202E-03 5.556E-11 1.055E-06 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL I-130 R 1.529E+00 1.185E-11 5.925E-08 5.678E-15 2.839E-11 I-131 R 4.550E+01 3.526E-10 3.526E-05 1.689E-13 1.689E-08 I-133 R 1.581E+00 1.225E-11 1.750E-07 5.869E-15 8.384E-11 I-132 R 7.682E+01 5.953E-10 5.953E-07 2.852E-13 2.852E-10 Nuclide Type Total 1.254E+02 9.720E-10 3.609E-05 4.657E-13 1.729E-08 Total 1.791E+08 1.388E-03 1.411E-01 6.650E-07 6.762E-05 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Liquid Status Summary Report Saturday, September 11, 2021 16:24 Page 5 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: PSL1 Liquid Dose Summary - Note: All Doses in mRem Receptor Agegroup Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin Liquid Receptor - Teenager Teenager 7.287E-04 2.043E-03 2.090E-03 1.359E-03 1.799E-03 2.858E-03 1.084E-02 0.000E+00 Liquid Recptor - Child Child 5.843E-04 1.642E-03 1.933E-03 1.275E-03 7.840E-04 1.869E-03 4.928E-03 0.000E+00 Maximum Dose by Organ: 7.287E-04 2.043E-03 2.090E-03 1.359E-03 1.799E-03 2.858E-03 1.084E-02 0.000E+00 Maximum Organ Dose (mRem): 1.084E-02 Maximum Total Body Dose (mRem): 2.090E-03 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Liquid Status Summary Report Saturday, September 11, 2021 16:29 Page 3 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: PSL2 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL Xe-133m N 2.131E+01 1.652E-10 8.258E-08 7.913E-14 3.956E-11 Xe-133 N 2.748E+03 2.129E-08 1.065E-05 1.020E-11 5.101E-09 Xe-135 N 2.508E+01 1.943E-10 9.716E-08 9.310E-14 4.655E-11 Nuclide Type Total 2.794E+03 2.165E-08 1.083E-05 1.037E-11 5.187E-09 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL H-3 O 1.791E+08 1.388E-03 1.388E-01 6.649E-07 6.649E-05 C-14 O 3.790E+03 2.937E-08 9.791E-05 1.407E-11 4.691E-08 Ni-63 O 3.638E+02 2.819E-09 2.819E-06 1.351E-12 1.351E-09 Nuclide Type Total 1.791E+08 1.388E-03 1.389E-01 6.650E-07 6.654E-05 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL Na-24 P 3.140E+01 2.433E-10 4.866E-07 1.166E-13 2.331E-10 Be-7 P 5.247E+01 4.066E-10 0.000E+00 1.948E-13 0.000E+00 Te-129 P 6.079E+01 4.711E-10 1.178E-07 2.257E-13 5.643E-11 Te-123m P 2.411E+02 1.869E-09 0.000E+00 8.953E-13 0.000E+00 Zn-65 P 4.949E+01 3.835E-10 7.670E-06 1.837E-13 3.675E-09 Co-60 P 6.636E+03 5.142E-08 1.714E-03 2.464E-11 8.212E-07 La-140 P 1.275E+02 9.883E-10 1.098E-05 4.735E-13 5.261E-09 Zr-95 P 4.645E+01 3.599E-10 1.800E-06 1.724E-13 8.622E-10 Fe-59 P 1.884E+01 1.460E-10 1.460E-06 6.994E-14 6.994E-10 Nb-95 P 1.321E+02 1.024E-09 3.413E-06 4.906E-13 1.635E-09 Ag-110m P 2.083E+02 1.614E-09 2.691E-05 7.735E-13 1.289E-08 Te-132 P 8.565E+01 6.637E-10 7.375E-06 3.180E-13 3.533E-09 Sb-124 P 1.532E+03 1.187E-08 1.696E-04 5.687E-12 8.125E-08 Sb-125 P 3.490E+03 2.704E-08 9.014E-05 1.296E-11 4.319E-08 Sn-117m P 9.524E+00 7.380E-11 0.000E+00 3.536E-14 0.000E+00 Cr-51 P 7.864E+01 6.094E-10 1.219E-07 2.920E-13 5.839E-11 Co-58 P 9.428E+02 7.306E-09 3.653E-05 3.500E-12 1.750E-08 Sb-122 P 1.643E+02 1.274E-09 1.274E-05 6.101E-13 6.101E-09 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Liquid Status Summary Report Saturday, September 11, 2021 16:29 Page 4 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: PSL2 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL Nb-97 P 2.741E+02 2.124E-09 7.079E-07 1.018E-12 3.392E-10 Te-129m P 4.925E+02 3.816E-09 5.452E-05 1.828E-12 2.612E-08 Cs-137 P 7.483E+01 5.798E-10 5.798E-05 2.778E-13 2.778E-08 W-187 P 6.934E+00 5.373E-11 1.791E-07 2.574E-14 8.581E-11 Mn-54 P 2.089E+02 1.619E-09 5.397E-06 7.757E-13 2.586E-09 Nuclide Type Total 1.496E+04 1.160E-07 2.202E-03 5.556E-11 1.055E-06 Nuclide Type Activity (uCi) Avg Conc (uCi/mL) Avg Conc/10xECL Dil Conc (uCi/mL) Dil Conc/10xECL I-130 R 1.529E+00 1.185E-11 5.925E-08 5.678E-15 2.839E-11 I-131 R 4.550E+01 3.526E-10 3.526E-05 1.689E-13 1.689E-08 I-133 R 1.581E+00 1.225E-11 1.750E-07 5.869E-15 8.384E-11 I-132 R 7.682E+01 5.953E-10 5.953E-07 2.852E-13 2.852E-10 Nuclide Type Total 1.254E+02 9.720E-10 3.609E-05 4.657E-13 1.729E-08 Total 1.791E+08 1.388E-03 1.411E-01 6.650E-07 6.762E-05 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Liquid Status Summary Report Saturday, September 11, 2021 16:29 Page 5 of 5 Period: Ann, 2020 Site/Unit/Discharge Point: PSL2 Liquid Dose Summary - Note: All Doses in mRem Receptor Agegroup Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin Liquid Receptor - Teenager Teenager 7.287E-04 2.043E-03 2.090E-03 1.359E-03 1.799E-03 2.858E-03 1.084E-02 0.000E+00 Liquid Recptor - Child Child 5.843E-04 1.642E-03 1.933E-03 1.275E-03 7.840E-04 1.869E-03 4.928E-03 0.000E+00 Maximum Dose by Organ: 7.287E-04 2.043E-03 2.090E-03 1.359E-03 1.799E-03 2.858E-03 1.084E-02 0.000E+00 Maximum Organ Dose (mRem): 1.084E-02 Maximum Total Body Dose (mRem): 2.090E-03 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Gas Status Summary Report Saturday, September 11, 2021 16:35 Page 13 of 15 Period: Ann, 2020 Site/Unit/Discharge Point: Site Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

Kr-85m N 9.156E+01 2.445E-14 2.445E-08 2.895E-06 Kr-89 N 6.854E+03 1.831E-12 1.831E-04 2.168E-04 Xe-137 N 1.682E+03 4.492E-13 4.492E-05 5.319E-05 Xe-133m N 3.505E+02 9.361E-14 1.560E-08 1.108E-05 Ar-41 N 7.711E+06 2.059E-09 2.059E-02 2.438E-01 Kr-88 N 1.776E+02 4.744E-14 5.271E-07 5.617E-06 Xe-135 N 2.896E+03 7.735E-13 1.105E-06 9.159E-05 Xe-133 N 7.416E+05 1.981E-10 3.961E-05 2.345E-02 Xe-127 N 3.437E+01 9.180E-15 0.000E+00 1.087E-06 Kr-87 N 5.004E+01 1.336E-14 6.682E-08 1.582E-06 Nuclide Type Total 8.465E+06 2.261E-09 2.086E-02 2.677E-01 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

H-3 O 4.516E+07 1.206E-08 1.206E-02 1.428E+00 C-14 O 2.211E+07 5.905E-09 1.968E-01 6.992E-01 G-Alpha O 7.600E-02 2.030E-17 2.030E-03 2.403E-09 Nuclide Type Total 6.727E+07 1.797E-08 2.109E-01 2.127E+00 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

Co-58 P 6.870E-02 1.835E-17 1.835E-09 2.172E-09 Co-60 P 9.345E+02 2.496E-13 4.992E-04 2.955E-05 Cs-137 P 7.905E+00 2.111E-15 1.056E-06 2.500E-07 Nuclide Type Total 9.425E+02 2.517E-13 5.002E-04 2.981E-05 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

I-131 R 5.312E+00 1.419E-15 7.094E-07 1.680E-07 I-133 R 6.208E+01 1.658E-14 1.658E-06 1.963E-06 Nuclide Type Total 6.739E+01 1.800E-14 2.367E-06 2.131E-06 Total 7.573E+07 2.023E-08 2.323E-01 2.395E+00 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Gas Status Summary Report Saturday, September 11, 2021 16:35 Page 14 of 15 Period: Ann, 2020 Site/Unit/Discharge Point: Site Site Boundary NNG Doserate Summary - Note: All Doses in mRem/yr Receptor Agegroup Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin NW Site Boundary - In Infant 1.042E-02 1.055E-02 1.055E-02 1.057E-02 5.875E-03 1.077E-02 1.056E-02 0.000E+00 WNW Site Boundary - I Infant 1.069E-03 1.069E-03 1.069E-03 1.069E-03 1.069E-03 1.069E-03 1.069E-03 0.000E+00 Maximum Doserate by Organ: 1.042E-02 1.055E-02 1.055E-02 1.057E-02 5.875E-03 1.077E-02 1.056E-02 0.000E+00 Maximum Organ Doserate (mRem/yr): 1.077E-02 Maximum Total Body Doserate (mRem/yr): 1.055E-02 Site Boundary NG Doserate Summary Gas Receptor Location Gamma (mRad/yr) Beta (mRad/yr) Total Body (mRem/yr) Skin (mRem/yr)

NW Site Boundary 3.648E-03 1.324E-03 3.466E-03 5.079E-03 WNW Site Boundary 3.143E-03 1.141E-03 2.986E-03 4.375E-03 Maximum NG Dose Rate: 3.648E-03 1.324E-03 3.466E-03 5.079E-03 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Gas Status Summary Report Saturday, September 11, 2021 16:35 Page 15 of 15 Period: Ann, 2020 Site/Unit/Discharge Point: Site Maximum Individual NNG Dose Summary - Note: All Doses in mRem Receptor Agegroup Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin NW - Near Milk - Adult Adult 3.015E-04 3.022E-04 3.020E-04 3.139E-04 3.011E-04 3.256E-04 3.061E-04 0.000E+00 NW Near Milk - Child Child 3.044E-04 3.049E-04 3.030E-04 3.397E-04 3.011E-04 3.298E-04 3.043E-04 0.000E+00 NW Near Milk - Infant Infant 3.084E-04 3.106E-04 3.042E-04 3.924E-04 3.011E-04 3.248E-04 3.038E-04 0.000E+00 NW Near Milk - Teenager Teenager 3.022E-04 3.031E-04 3.023E-04 3.205E-04 3.012E-04 3.365E-04 3.062E-04 0.000E+00 SE Nearest Res - Adult Adult 1.759E-03 1.760E-03 1.760E-03 1.764E-03 1.759E-03 1.865E-03 1.764E-03 0.000E+00 SE Nearest Res - Child Child 1.759E-03 1.759E-03 1.759E-03 1.767E-03 1.759E-03 1.881E-03 1.761E-03 0.000E+00 SE Nearest Res - Infant Infant 1.759E-03 1.759E-03 1.759E-03 1.766E-03 1.759E-03 1.857E-03 1.760E-03 0.000E+00 SE Nearest Res - Teenager Teenager 1.759E-03 1.759E-03 1.759E-03 1.765E-03 1.759E-03 1.910E-03 1.763E-03 0.000E+00 SE Visitor - Lifeguard 1.0 mi Adult 8.171E-04 8.172E-04 8.172E-04 8.190E-04 8.171E-04 8.630E-04 8.192E-04 0.000E+00 W Near Garden - Adult Adult 8.252E-04 8.253E-04 8.253E-04 8.270E-04 8.252E-04 8.686E-04 8.272E-04 0.000E+00 W Near Garden - Child Child 8.252E-04 8.252E-04 8.251E-04 8.282E-04 8.251E-04 8.754E-04 8.258E-04 0.000E+00 W Near Garden - Teenager Teenager 8.252E-04 8.252E-04 8.252E-04 8.275E-04 8.252E-04 8.874E-04 8.268E-04 0.000E+00 Maximum Dose by Organ: 1.759E-03 1.760E-03 1.760E-03 1.767E-03 1.759E-03 1.910E-03 1.764E-03 0.000E+00 Maximum Organ Dose (mRem): 1.910E-03 Maximum Total Body Dose (mRem): 1.760E-03 Maximum Individual NG Dose Summary Gas Receptor Location Gamma (mRad) Beta (mRad) Total Body (mRem) Skin (mRem)

NW Near Milk 4.25 mi 3.201E-04 1.162E-04 3.041E-04 4.456E-04 SE Nearest Res 1.52 mi 142 deg 1.628E-03 5.910E-04 1.547E-03 2.267E-03 SE Visitor @ 1 mi 7.050E-04 2.559E-04 6.698E-04 9.815E-04 W Near Gard 2.0 miles 5.602E-04 2.033E-04 5.322E-04 7.798E-04 Maximum NG Dose: 1.628E-03 5.910E-04 1.547E-03 2.267E-03 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Gas Status Summary Report Saturday, September 11, 2021 16:56 Page 8 of 10 Period: Ann, 2020 Site/Unit/Discharge Point: PSL1 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

Kr-89 N 6.854E+03 4.063E-12 4.063E-04 2.168E-04 Ar-41 N 3.444E+05 2.041E-10 2.041E-03 1.089E-02 Xe-133 N 9.196E+04 5.451E-11 1.090E-05 2.908E-03 Kr-87 N 5.004E+01 2.966E-14 1.483E-07 1.582E-06 Xe-135 N 2.756E+02 1.634E-13 2.334E-07 8.715E-06 Xe-137 N 1.682E+03 9.969E-13 9.969E-05 5.319E-05 Kr-85m N 7.689E+01 4.557E-14 4.557E-08 2.432E-06 Nuclide Type Total 4.453E+05 2.639E-10 2.559E-03 1.408E-02 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

H-3 O 1.463E+06 8.673E-10 8.673E-04 4.627E-02 G-Alpha O 5.064E-02 3.002E-17 3.002E-03 1.601E-09 C-14 O 1.158E+07 6.864E-09 2.288E-01 3.662E-01 Nuclide Type Total 1.304E+07 7.731E-09 2.327E-01 4.125E-01 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

Co-60 P 9.344E+02 5.538E-13 1.108E-03 2.955E-05 Nuclide Type Total 9.344E+02 5.538E-13 1.108E-03 2.955E-05 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

I-131 R 4.433E-01 2.628E-16 1.314E-07 1.402E-08 Nuclide Type Total 4.433E-01 2.628E-16 1.314E-07 1.402E-08 Total 1.349E+07 7.995E-09 2.363E-01 4.266E-01 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Gas Status Summary Report Saturday, September 11, 2021 16:56 Page 9 of 10 Period: Ann, 2020 Site/Unit/Discharge Point: PSL1 Site Boundary NNG Doserate Summary - Note: All Doses in mRem/yr Receptor Agegroup Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin NW Site Boundary - In Infant 7.713E-03 7.299E-03 7.299E-03 7.299E-03 5.120E-03 7.513E-03 7.300E-03 0.000E+00 WNW Site Boundary - I Infant 1.066E-03 1.066E-03 1.066E-03 1.066E-03 1.066E-03 1.066E-03 1.066E-03 0.000E+00 Maximum Doserate by Organ: 7.713E-03 7.299E-03 7.299E-03 7.299E-03 5.120E-03 7.513E-03 7.300E-03 0.000E+00 Maximum Organ Doserate (mRem/yr): 7.713E-03 Maximum Total Body Doserate (mRem/yr): 7.299E-03 Site Boundary NG Doserate Summary Gas Receptor Location Gamma (mRad/yr) Beta (mRad/yr) Total Body (mRem/yr) Skin (mRem/yr)

NW Site Boundary 1.699E-04 6.687E-05 1.613E-04 2.398E-04 WNW Site Boundary 1.463E-04 5.760E-05 1.390E-04 2.065E-04 Maximum NG Dose Rate: 1.699E-04 6.687E-05 1.613E-04 2.398E-04 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Gas Status Summary Report Saturday, September 11, 2021 16:56 Page 10 of 10 Period: Ann, 2020 Site/Unit/Discharge Point: PSL1 Maximum Individual NNG Dose Summary - Note: All Doses in mRem Receptor Agegroup Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin NW - Near Milk - Adult Adult 2.994E-04 2.997E-04 3.000E-04 3.004E-04 2.994E-04 3.243E-04 3.049E-04 0.000E+00 NW Near Milk - Child Child 2.994E-04 3.000E-04 3.012E-04 3.022E-04 2.994E-04 3.282E-04 3.031E-04 0.000E+00 NW Near Milk - Infant Infant 2.994E-04 3.007E-04 3.023E-04 3.060E-04 2.994E-04 3.226E-04 3.026E-04 0.000E+00 NW Near Milk - Teenager Teenager 2.994E-04 2.998E-04 3.003E-04 3.008E-04 2.994E-04 3.350E-04 3.049E-04 0.000E+00 SE Nearest Res - Adult Adult 1.752E-03 1.752E-03 1.752E-03 1.752E-03 1.752E-03 1.858E-03 1.757E-03 0.000E+00 SE Nearest Res - Child Child 1.752E-03 1.752E-03 1.752E-03 1.752E-03 1.752E-03 1.874E-03 1.754E-03 0.000E+00 SE Nearest Res - Infant Infant 1.752E-03 1.752E-03 1.752E-03 1.752E-03 1.752E-03 1.850E-03 1.753E-03 0.000E+00 SE Nearest Res - Teenager Teenager 1.752E-03 1.752E-03 1.752E-03 1.752E-03 1.752E-03 1.903E-03 1.756E-03 0.000E+00 SE Visitor - Lifeguard 1.0 mi Adult 8.137E-04 8.138E-04 8.139E-04 8.138E-04 8.137E-04 8.597E-04 8.159E-04 0.000E+00 W Near Garden - Adult Adult 8.218E-04 8.219E-04 8.219E-04 8.218E-04 8.218E-04 8.653E-04 8.239E-04 0.000E+00 W Near Garden - Child Child 8.218E-04 8.218E-04 8.218E-04 8.219E-04 8.218E-04 8.721E-04 8.225E-04 0.000E+00 W Near Garden - Teenager Teenager 8.218E-04 8.218E-04 8.218E-04 8.219E-04 8.218E-04 8.840E-04 8.235E-04 0.000E+00 Maximum Dose by Organ: 1.752E-03 1.752E-03 1.752E-03 1.752E-03 1.752E-03 1.903E-03 1.757E-03 0.000E+00 Maximum Organ Dose (mRem): 1.903E-03 Maximum Total Body Dose (mRem): 1.752E-03 Maximum Individual NG Dose Summary Gas Receptor Location Gamma (mRad) Beta (mRad) Total Body (mRem) Skin (mRem)

NW Near Milk 4.25 mi 1.491E-05 5.867E-06 1.416E-05 2.104E-05 SE Nearest Res 1.52 mi 142 deg 7.582E-05 2.984E-05 7.201E-05 1.070E-04 SE Visitor @ 1 mi 3.283E-05 1.292E-05 3.118E-05 4.633E-05 W Near Gard 2.0 miles 2.608E-05 1.027E-05 2.477E-05 3.681E-05 Maximum NG Dose: 7.582E-05 2.984E-05 7.201E-05 1.070E-04 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Gas Status Summary Report Friday, February 12, 2021 15:12 Page 6 of 8 Period: Ann, 2020 Site/Unit/Discharge Point: PSL2 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

Ar-41 N 7.366E+06 3.581E-09 3.581E-02 2.330E-01 Xe-133 N 6.496E+05 3.158E-10 6.316E-05 2.054E-02 Kr-88 N 1.776E+02 8.635E-14 9.595E-07 5.617E-06 Kr-85m N 1.467E+01 7.130E-15 7.130E-09 4.638E-07 Xe-133m N 3.505E+02 1.704E-13 2.840E-08 1.108E-05 Xe-135 N 2.621E+03 1.274E-12 1.820E-06 8.287E-05 Xe-127 N 3.437E+01 1.671E-14 0.000E+00 1.087E-06 Nuclide Type Total 8.019E+06 3.898E-09 3.588E-02 2.536E-01 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

H-3 O 4.370E+07 2.124E-08 2.124E-02 1.382E+00 G-Alpha O 2.536E-02 1.233E-17 1.233E-03 8.019E-10 C-14 O 1.053E+07 5.119E-09 1.706E-01 3.330E-01 Nuclide Type Total 5.423E+07 2.636E-08 1.931E-01 1.715E+00 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

Cs-137 P 7.905E+00 3.843E-15 1.921E-06 2.500E-07 Co-60 P 1.138E-01 5.530E-17 1.106E-07 3.598E-09 Co-58 P 6.870E-02 3.339E-17 3.339E-09 2.172E-09 Nuclide Type Total 8.088E+00 3.932E-15 2.035E-06 2.558E-07 Nuclide Type Activity (uCi) Avg Conc (uCi/cc) Avg Conc/10xECL Avg Rel Rate (uCi/sec)

I-133 R 6.208E+01 3.018E-14 3.018E-06 1.963E-06 I-131 R 4.869E+00 2.367E-15 1.183E-06 1.540E-07 Nuclide Type Total 6.695E+01 3.254E-14 4.201E-06 2.117E-06 Total 6.225E+07 3.026E-08 2.290E-01 1.968E+00 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Gas Status Summary Report Friday, February 12, 2021 15:12 Page 7 of 8 Period: Ann, 2020 Site/Unit/Discharge Point: PSL2 Site Boundary NNG Doserate Summary - Note: All Doses in mRem/yr Receptor Agegroup Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin NW Site Boundary - In Infant 2.709E-03 3.255E-03 3.255E-03 3.270E-03 7.546E-04 3.255E-03 3.255E-03 0.000E+00 WNW Site Boundary - I Infant 2.427E-06 2.427E-06 2.427E-06 2.427E-06 2.427E-06 2.427E-06 2.427E-06 0.000E+00 Maximum Doserate by Organ: 2.709E-03 3.255E-03 3.255E-03 3.270E-03 7.546E-04 3.255E-03 3.255E-03 0.000E+00 Maximum Organ Doserate (mRem/yr): 3.270E-03 Maximum Total Body Doserate (mRem/yr): 3.255E-03 Site Boundary NG Doserate Summary Gas Receptor Location Gamma (mRad/yr) Beta (mRad/yr) Total Body (mRem/yr) Skin (mRem/yr)

NW Site Boundary 3.478E-03 1.257E-03 3.305E-03 4.839E-03 WNW Site Boundary 2.996E-03 1.083E-03 2.847E-03 4.169E-03 Maximum NG Dose Rate: 3.478E-03 1.257E-03 3.305E-03 4.839E-03 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

Gas Status Summary Report Friday, February 12, 2021 15:12 Page 8 of 8 Period: Ann, 2020 Site/Unit/Discharge Point: PSL2 Maximum Individual NNG Dose Summary - Note: All Doses in mRem Receptor Agegroup Bone Liver Total Body Thyroid Kidney Lung GI-Lli Skin NW - Near Milk - Adult Adult 2.116E-06 2.452E-06 2.018E-06 1.351E-05 1.690E-06 1.344E-06 1.247E-06 0.000E+00 NW Near Milk - Child Child 4.950E-06 4.838E-06 1.811E-06 3.749E-05 1.711E-06 1.619E-06 1.247E-06 0.000E+00 NW Near Milk - Infant Infant 8.987E-06 9.942E-06 1.841E-06 8.639E-05 1.703E-06 2.227E-06 1.248E-06 0.000E+00 NW Near Milk - Teenager Teenager 2.774E-06 3.318E-06 1.961E-06 1.970E-05 1.824E-06 1.478E-06 1.256E-06 0.000E+00 SE Nearest Res - Adult Adult 7.151E-06 7.181E-06 7.139E-06 1.158E-05 7.137E-06 7.079E-06 7.080E-06 0.000E+00 SE Nearest Res - Child Child 7.220E-06 7.214E-06 7.099E-06 1.435E-05 7.100E-06 7.083E-06 7.075E-06 0.000E+00 SE Nearest Res - Infant Infant 7.188E-06 7.202E-06 7.084E-06 1.380E-05 7.080E-06 7.082E-06 7.071E-06 0.000E+00 SE Nearest Res - Teenager Teenager 7.180E-06 7.218E-06 7.123E-06 1.281E-05 7.137E-06 7.085E-06 7.081E-06 0.000E+00 SE Visitor - Lifeguard 1.0 mi Adult 3.319E-06 3.332E-06 3.313E-06 5.252E-06 3.312E-06 3.287E-06 3.288E-06 0.000E+00 W Near Garden - Adult Adult 3.349E-06 3.361E-06 3.344E-06 5.177E-06 3.343E-06 3.320E-06 3.320E-06 0.000E+00 W Near Garden - Child Child 3.378E-06 3.375E-06 3.328E-06 6.323E-06 3.328E-06 3.321E-06 3.318E-06 0.000E+00 W Near Garden - Teenager Teenager 3.361E-06 3.377E-06 3.338E-06 5.687E-06 3.343E-06 3.322E-06 3.320E-06 0.000E+00 Maximum Dose by Organ: 8.987E-06 9.942E-06 7.139E-06 8.639E-05 7.137E-06 7.085E-06 7.081E-06 0.000E+00 Maximum Organ Dose (mRem): 8.639E-05 Maximum Total Body Dose (mRem): 7.139E-06 Maximum Individual NG Dose Summary Gas Receptor Location Gamma (mRad) Beta (mRad) Total Body (mRem) Skin (mRem)

NW Near Milk 4.25 mi 3.052E-04 1.103E-04 2.900E-04 4.246E-04 SE Nearest Res 1.52 mi 142 deg 1.552E-03 5.612E-04 1.475E-03 2.160E-03 SE Visitor @ 1 mi 6.722E-04 2.430E-04 6.387E-04 9.352E-04 W Near Gard 2.0 miles 5.341E-04 1.931E-04 5.074E-04 7.430E-04 Maximum NG Dose: 1.552E-03 5.612E-04 1.475E-03 2.160E-03 User: admin [Server]: PSLSA137 [Database]: NEPSOEMP

L-2021-225 Enclosure TABLE 3.4 VISITOR DOSE (1 PAGE)

This portion of the 2020 Annual Radioactive Effluent Release Report was originally submitted with L-2021-049 on March 1, 2021. It is included unchanged with this correction letter for context and completeness.

L-2021-049 Enclosure 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 the site. Actual Met Data was used to calculate Visitor Dose for Calendar Year 2020.

Visitor Dose results for calendar year 2020 are below:

Noble Gas Dose mrad Gamma Air Dose 1.24E-03 Beta Air Dose 4.48E-04 Gas, Particulate, Iodine, Carbon Dose mrem Bone 2.76E-04 Liver 2.76E-04 Thyroid 2.77E-04 Kidney 2.76E-04 Lung 2.92E-04 GI-LLI 2.77E-04 Total Body 2.76E-04

L-2021-225, Correction to the 2020 Annual Radioactive Effluent Release Report

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L-2021-225, Correction to the 2020 Annual Radioactive Effluent Release Report

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