Text

2021 Annual Radioactive Effluent Release Report
	ML22117A091
Person / Time
Site:	River Bend
Issue date:	04/27/2022
From:	Schenk T; Entergy Operations
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	RBG-48149
	Download: ML22117A091 (89)
	v • d • e

} entergy RBG-48149 April 27, 2022 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

2021 Annual Radioactive Effluent Release Report River Bend Station - Unit 1 Renewed Operating License No. NPF-47 Docket No. 50-458 Tim Schenk Manager Regulatory Assurance_

225-381-4177 Enclosed is the River Bend Station (RBS) Annual Radioactive Effluent Release Report for the period of January 1, 2021, through December 31, 2021. This report is submitted in accordance with the RBS Technical Specifications, Section 5.6.3.

Should you have any questions regarding the enclosed, please contact Tim Schenk, at (225) 381-4177.

Sincerely, Tim Schenk TAS/twf

Enclosure:

2021 Annual Radioactive Effluent Release Report cc:

NRG Senior Resident Inspector - River Bend Station, Unit 1

Enclosure 2021 Annual Radioactive Effluent Release Report

entergy Plant: River Bend Nuclear Station Page 1 of 87 YEAR: 2021 Document Number: RBG-48149 Annual Radioactive Effluent Release Report Review and Approval:

Site VP Kent Scott Print GMPO Bonnie Bryant Print Mgr, Regulatory Assurance Timothy Schenk Print Sr Mgr, Radiation Protection Rick Leasure Print Mgr, Chemistry Mike Ponzo Print Peer Review Travis Matthews Print Preparer Manny Dumatrait Print

~

Sign

~

Sign Sign el//rfl,pa-Date 4...,.g~~

Date i/4:/4~~1-Date Date Date

Plant: River Bend Nuclear Station I

Year: 2021 I

Page 2 of 87 Annual Radioactive Effluent Release Report TABLE OF CONTENTS

1.0 INTRODUCTION

........................................................................................................................ 3 2.0 SUPPLEMENTAL INFORMATION.............................................................................................. 3 3.0 GASEOUS EFFLUENTS........................................................................................................... 13 4.0 LIQUID EFFLUENTS................................................................................................................ 17 5.0 SOLID WASTE

SUMMARY

...................................................................................................... 22 6.0 RADIOLOGICAL IMPACT TO MAN.......................................................................................... 25 7.0 METEORLOGICAL DATA......................................................................................................... 28 ATTACHMENTS - Groundwater Monitoring Well Sampling Results...........................................................45 - 2018 ARERR ERRATA................................................................................................. 81 - 2019 ARERR ERRATA................................................................................................. 82 - 2020 ARERR ERRATA....................................................... ;......................................... 85

Plant: River Bend Nuclear Station I

Year: 2021 I Page 3 of 87 Annual Radioactive Effluent Release Report

1.0 INTRODUCTION

2.0 2.1 2.1.1 This is the Annual Radioactive Effluent Release Report for the period of January 1, 2021, through December 31, 2021. This report is submitted in accordance with Technical Specification 5.6.3 of Appendix A to River Bend Station (RBS) License Number NPF-47.

SUPPLEMENTAL INFORMATION Regulatory Limits 1 0CFR50, Appendix I Limits 1.

Fission and activation gases:

a.

In accordance with Technical Requirement (TR) 3.11.2.2, the air dose due to noble gases released in gaseous effluent to areas at and beyond the SITE BOUNDARY shall be limited to:

1)

Quarterly Less than or equal to 5 mrads gamma Less than or equal to 1 0 mrads beta

2)

Yearly Less than or equal to 1 0 mrads gamma Less than or equal to 20 mrads beta

2.

Iodine, tritium, and all radionuclides in particulate form with half-lives greater than 8 days.

a.

In accordance with Technical Requirement 3.11.2.3, the dose to a MEMBER OF THE PUBLIC from radioiodines (1-131 and 1-133), tritium (H-3) and all radionuclides in particulate form with half-lives greater than 8 days, in gaseous effluent releases to areas at and beyond the SITE BOUNDARY shall be limited to:

1)

Quarterly Less than or equal to 7.5 mrem to any organ

2)

Yearly Less than or equal to 15 mrem to any organ

Plant: River Bend Nuclear Station I

Year: 2021 I

Page 4 of 87 Annual Radioactive Effluent Release Report

3.

Liquid Effluents Dose

a.

In accordance with Technical Requirement 3.11.1.2, the dose or dose commitment to a MEMBER OF THE PUBLIC from radioactive materials in liquid effluent released to UNRESTRICTED AREAS shall be limited to:

1)

Quarterly Less than or equal to 1.5 mrem total body Less than or equal to 5 mrem critical organ

2)

Yearly Less than or equal to 3 mrem total body Less than or equal to 1 O mrem critical organ

4.

Total Dose (40CFR190)

a.

In accordance with Technical Requirement 3.11.4, 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, Total Body or any Organ except Thyroid.

Less than or equal to 75 mrem, Thyroid 2.1.2 Miscellaneous Limits

1.

Technical Requirement 3.11.2.1 - Fission and Activation Gases

a.

In accordance with Technical Requirement 3.11.2.1, the dose rate due to radioactive materials released in gaseous effluents from the site to areas at and beyond the SITE BOUNDARY shall be:

Less than or equal to 500 mrem/year to the total body Less than or equal to 3000 mrem/year to the skin

2.

Technical Requirement 3.11.2.1 - Radioiodine (1-131 & 1-133) and Particulate

a.

In accordance with Technical Requirement 3.11.2.1, the dose rate due to radioiodines, 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

2.2

2.3 Plant

River Bend Nuclear Station I

Vear: 2021 I Page 5 of 87 Annual Radioactive Effluent Release Report

3.

Technical Requirement 3.11.1.1 - Liquid Effluent

a.

In accordance with Technical Requirement 3.11.1.1, the concentration of radioactive material released in liquid effluent to UNRESTRICTED AREAS shall be limited to ten times the concentrations specified in 1 0CFR20, 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-04 microcuries/milliliter total concentration.

4.

Technical Requirement 3.11.2.5 - Ventilation Exhaust Treatment

a.

In accordance with Technical Requirement 3.11.2.5, the VENTILATION EXHAUST TREATMENT SYSTEM shall be used to reduce radioactive materials in gaseous waste prior to their discharge when the projected doses, due to gaseous effluent releases to areas and beyond the SITE BOUNDARY would exceed 0.3 mrem to any organ in a 31-day period.

5.

Technical Requirement 3.11.1.3 - Liquid Radwaste Treatment System

a.

In accordance with Technical Requirement 3.11.1.3, the liquid radwaste treatment system shall be used to reduce the radioactive materials in liquid waste prior to their discharge when the projected doses, due to the liquid effluent, to UNRESTRICTED AREAS would exceed 0.06 mrem to the total body or 0.2 mrem to any organ in a 31-day period.

Effluent Concentration Limits

1.

Gaseous Releases

a.

The concentrations of radioactive gaseous releases are based on the dose rate restrictions in RBS Technical Requirements, rather than the Effluent Concentration Limits (ECL) listed in 1 0CFR20 Appendix B, Table 2, Column 1.

2.

Liquid Releases

a.

The Effluent Concentration Limits of radioactive materials in liquid effluents are limited to ten times 1 0CFR20, Appendix B, Table 2, Column

2.

Measurements & Approximations of Total Radioactivity

1.

Gaseous Effluent

a.

Fission & activation gases Periodic grab samples are obtained from the Main Plant Exhaust Duct, Fuel Building Exhaust Vent and Radwaste Building Exhaust Vent. These samples are analyzed using high purity germanium detectors coupled to computerized pulse height analyzers. The sampling and analysis frequencies are described in Table 4.

Plant: River Bend Nuclear Station I

Year: 2021 I Page 6 of 87 Annual Radioactive Effluent Release Report Sampling and analysis of these effluent streams provide noble gas radionuclide relative abundance that can then be applied to the noble gas gross activity and gross activity release rate to obtain nuclide specific activities and release rates. The noble gas gross activity released within a specific time period is determined by integrating the stack monitor release rate over the considered time period. If no activity was detected between the stack grab sample and a significant increase in hourly averages was recorded, the nuclide relative abundance of the last sample (or the last similar event), which indicated the presence of activity, was used to obtain nuclide specific activities. Correction factors for the monitors are derived and applied for each sampling period whenever noble gas radionuclides are detected in the effluent stream.

b.

Particulate and Radioiodine (1-131 & 1-133)

Particulates, lodine-131 and lodine-133 are continuously sampled from the three release points using a particulate filter and charcoal cartridge in line with a sample pump (stack monitor pump). These filters and charcoal cartridges are removed and analyzed in accordancewith the frequencies specified in Table 4. Analysis is performed to identify and quantify radionuclides using high purity germanium detectors coupled to computerized pulse height analyzers. Given the nuclide specific activity concentrations, process flow rate, and duration of the sample, the nuclide specific activity released to the environment can be obtained. Due to the continuous sampling process, it is assumed that the radioactive material is released to the environment at a constant rate within the sampling period. Strontium-89, Strontium-90, and Gross alpha are quantitatively analyzed by counting by gas flow proportional counting.

c.

Tritium Tritium grab samples are obtained from the three gaseous release points at the specified frequencies listed in Table 4 using an ice bath condensation collection method. The collected sample is then analyzed using a liquid scintillation counter. Given the tritium concentration, process flow rate, and time period for which the sample is obtained, the tritium activity released to the environment can be determined. Due to the frequency of sampling, it is assumed that the tritium is released to the environment at a constant rate within the time period for which the sample is obtained.

Plant: River Bend Nuclear Station I

Year: 2021 I

Page 7 of 87 Annual Radioactive Effluent Release Report

d.

Carbon-14 The bounding annual dose from C-14 was calculated using guidance from Regulatory Guide 1.21, Revision 2, NUREG-0016, and the methodology in Regulatory Guide 1.109. The results of this calculation are listed in Table 13. The C-14 source term of 11 curies was taken from the site calculation PR(C)-359-3A, Gaseous Releases per NUREG-0016 Revision 1. Carbon-14 does not have dose factors associated with standing on contaminated ground; therefore, no ground plane dose was calculated.

There is no milk pathway within five miles of River Bend Station, so this pathway is not evaluated. RBS does not take credit for decay in the X/Q.

This calculation assumes the inhalation, meat and vegetation pathways are at the site boundary in the sector with the highest X/Q. The dose from liquid effluents is not calculated as the dose contribution from C-14 is considered to be insignificant as indicated in Regulatory Guide 1.21, Revision 2. According to EPRI 1021106, Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents, 95% of the carbon released is in the form of carbon dioxide and this contributes the highest dose to man.

The ingestion pathway, specifically vegetation, is the most likely route of intake for man. An assumption has been made for gaseous releases that plants obtain all of their C-14 from carbon dioxide.

e.

Nickel-63 No Nickel-63 was quantified in 2021.

f.

Gaseous Effluent Summary Information Gaseous effluent summary information is located in Table 1, Table 2, and Table 3. It should be noted that an entry of "0.00E+O0" Curie (Ci) or microcurie/second (uCi/sec) in this section indicates that the concentration of the particular radionuclide was below the Lower Limit of Detection (LLD) as listed in Table 4. Also, any nuclide not appearing in the tables was < LLD for all four quarters.

2.

Liquid Effluents

a.

Representative grab samples are obtained from the appropriate sample recovery tank and analyzed prior to release of the tank in accordance with the frequencies listed in Table 8. Analysis for gamma emitting nuclides (including dissolved and entrained noble gases) is performed using a high purity germanium detector coupled to a computerized pulse height analyzer. Tritium concentration is determined using a liquid scintillation counter. Strontium-89, Strontium-90, and Gross alpha analysis are performed using a gas flow proportional counter. lron-55 is counted with a liquid scintillation counter after digestion of the iron. The activity of each nuclide released to the environment is determined from the nuclide specific concentration and total tank volume released.

b.

Liquid effluent summation information is located in Table 5 and Table 6.

It should be noted that an entry of "0.00E+00" Ci or uCi/ml in this section indicates that the concentration of the particular radionuclide was below the Lower Limit of Detection (LLD) as listed in Table 8. Also, any nuclide not appearing in the tables was < LLD for all four quarters.

Plant: RiverBend Nuclear Station I..

Year: 2021

]

Page 8 e>f 87 Annual [Radioactive Effluent Release Report

3.

Estimate of Total Error a~

Liquid The maximum error associated with sample collection, laboratory analysis, and discharge volume is collectively estimated to be:

b.

Gaseous Fission and Activation

Products.

Dissolved and Entrained Noble Gases Gross Alpha Radioactivity*

+/- 14.2%

+/-

The maximum error (not including sample line loss) associated with *

sample flow, process flow, Sample collection, monitor accuracy and laboratory analysis are collectively estimated to be:

Noble Gases

+/- 37.0%

+/- 18.6%

+/- 1R6%

Tritium

c.

Determination of Total Error The total ~mor (i.e., collectiv<3 error due to sample collection, laboratory**

analysis, sample flow, process flow, monitor accuracy, etc.) is calculated using tt,e following equation:

Where:

ET ~ total error E1... En== individual errors due to sample collection, laboratory analysis; sample flow, process flow, monitor accuracy, etc.

Plant: River Bend Nuclear Station I

Year: 2021 I

Page 9 of 87 Annual Radioactive Effluent Release Report 2.4 Batch Releases:

2.4.1 Liquid Batch releases and receiving stream flow from River Bend Station during the reporting period of January 1, 2021, through December 31, 2021 are shown in Table 7.

The Mississippi River stream flow is obtained by averaging data from the U.S. Army Corp of Engineers website using flow gauge data at Tarbert Landing.

2.4.2 Gaseous 2.5 2.6 2.7 There were no routine batch releases of gaseous effluents from River Bend Station during the reporting period of January 1, 2021, through December 31, 2021.

Abnormal Releases There were no abnormal releases in 2021.

Major Changes to Radioactive Liquid, Gaseous, and Solid Waste Treatment Systems Engineering performed a review of the Asset Suite database to evaluate non-administrative design changes completed or partially completed during 2021 involving the subject systems (i.e. changes classified as evaluations or nuclear changes).

These design changes were then reviewed to determine if there have been any major changes to the subject systems. The review was based on a major change being defined as a modification which affected the method of processing or the effluent from.

the system. Also, to be a "major change" the change must have affected the Updated Safety Analysis Report (USAA).

No EC was identified as being completed during this time period that modified any radioactive waste system major component such that the processing method or effluent was changed. Also, no changes were identified affecting the method of processing solid, liquid or gaseous waste or the isotopic composition or the quantity of liquid, solid, or gaseous waste as described in the USAA.

In conclusion, no design changes were completed during the specified time period that constituted a major change to either the liquid, solid or gaseous radwaste treatment systems.

Land Use Census Changes A Land Use Census was not conducted in 2021. The Land Use Census is performed every two years in accordance with procedure EN-CY-127, as required by the Technical Requirements Manual (TRM) (TR 3.12.2). The results of the Land Use Census are included in the Annual Radiological Environmental Operating Report pursuant to Technical Specification 5.6.2.

Plant: River Bend Nuclear Station I

Year: 2021 I Page 10 of 87 Annual Radioactive Effluent Release Report 2.8 Effluent Monitor Instrument lnoperability 2.8.1 Radioactive Liquid Effluent Monitoring Instrumentation Operability On 09/28/2021, CR-RBS-2021-06083 was initiated stating, "During the NRG RP Inspection the NRG identified a green non-cited violation for failure to operate liquid effluent monitor RMS-RE107 in accordance with TRM 3.3.11.2. Specifically, the monitor was inoperable for greater than 14-days from February 27 to April 2, 2021 without satisfying all the TRM action statements and for not completing all implementation actions. The NRG assigned cross-cutting aspect P.3 - Resolution for not addressing the issue in a timely manner commensurate with safety significance when it took 34-days to fix an issue that was required to be fixed within 14-days or to immediately suspend releases."

Specifically, TRM 3.3.11.2 action E.2 was not completed and logged. The NRG stated that once the 14 days of RMS-RE107 lnoperability were reached, Action D should have been exited and Action E.1 and E.2 should have been performed. While TRM 3.0.3 was used properly to answer Action E.1, Action E.2 was not completed. RBS Operations believed that due to the immediate concerns with Radwaste tank levels, as described in CR-RBS-2021-01395, it was permissible to move from TRM 3.3.11.2 Action D straight to TRM 3.0.3. The Operations Shift Manager at the time stated they believed that since there was no discharge in progress and CR-RBS-2021-02356 was initiated, Action E.1 and E.2 were completed. However, the CR did not mention Action E.2 and the eSOMS LCO Tracking Log for this entry does not include any record of E.1 or E.2.

CR-RBS-2021-01350 was initiated at 1353 on 02/27/2021. This condition was marked with an Operability Code of "EQUIP NON-FUNCTIONAL" and the LCO Log was updated with an Entry into TRM 3.3.11.2 at 14: 14 on 02/27/2021. This was assigned to FIN Work Order# 557781. FIN investigated and found additional parts needed to be replaced. FIN requested a different printed circuit board (CAT ID 2596310178) (Need Date of 03/03/2021, issued 03/04/2021), a detector assembly (CAT ID 1666506953) (Need Date of 03/30/2021, pledged 03/31/2021), another printed circuit board (CAT ID 1666506495) (Need Date of 03/31/2021, issued 03/31/2021), and lastly a printed circuit board (CAT ID 2599944415) (Need Date of 04/01/2021, issued 04/01/2021). On 04/01/2021 FIN replaced the final part needed, completed the applicable STP, adjustments, and calibrations. The delay in return to operable was due to parts availability and delivery dates. Once the last part was received, the rad monitor repair was completed and returned to operable. RBS exited TRM 3.3.11.2 at 1928 on 04/02/2021.

2.8.2 Radioactive Gaseous Effluent Monitoring Instrumentation Operability The minimum number of channels required to be OPERABLE as described in Table 3.3.11.3-1 of Technical Requirement 3.3.11.3 were, if inoperable at any time in the period January 1, 2021, through December 31, 2021, restored to operable status within the required time.

2.9 2.10 2.11 2.12 Plant: River Bend Nuclear Station I

... Year: 2021 Annual Radioactive Effluent Release Report Offsite Dose Calculation Manual Changes There were no changes to the Offsite Dose Calculation Manual in 2021.

Radiological Environmental Monitoring Program Changes I Page 11 of 87 There were no changes to the Radiological Environmental Monitoring Program during the reporting period January 1, 2021, through December 31, 2021. Process Control Progr~m (PCP) Changes Process Control Program {PCP} Changes There were no changes to the Process Control Program (PCP) in 2021.NON-REMP Groundwater Monitoring Results (NEI 07-07)

NON-REMP Groundwater Monitoring Results (NEI 07-07}

Ground water samples were taken in support of the Groundwater Protection Initiative (GPI). These samples are not part of the Radiological Environmental Monitoring Program. The sample results for 2021 are located in Table 17, Table 18, and Table 19.

River Bend Station made no NEI 07-07 voluntary notifications in 2021.

2.13 Outside Tanks The maximum quantity of radioactive material, excluding tritium and dissolved or entrained noble gases, contained in any unprotected outdoor tank during the period of January 1, 2021, through December 31, 2021 was less than or equal to the 10 curie limit as required by Technical Specification 5.5.8.b.

Plant: River Bend Nuclear Station I

V~ar: 2021 I Page 12 of 87 Annual Radioactive Effluent Release Report 2.14 Errata/Corrections to Previous ARERRs CR-RBS-2022-00743 denotes inaccuracies in previous years ARERRs were discovered during QA audits and reviews by outside agencies. Corrections to previous years reports are identified below and the affected pages are included in their entirety as Attachments to this report.

2018 2019 2020 Table 1 Section B both 1-131 and 1-133 values were included which is conservatively high. RG 1.21 Rev 1 requires only 1-131, therefore 1-133 has been removed from.these values.

Table (Section B both 1-131 and 1-133 values were included which is conservatively high. RG 1.21 Rev 1 requires only 1-131, therefore 1-133 has been removed from these values.

Table 5, Average diluted concentration values were conservatively high.

This table has been updated using actual dilution flows.

Table 14, errors were found in the dose evaluation. This table has been updated with the correct dose values.

Table 1 Section B both 1-131 and 1-133 values were included which is conservatively high. RG 1.21 Rev 1 requires only 1-131, therefore 1-133 has been removed from these values. A note explaining the elevated release of Noble gases has been added.

Table 5, Average diluted concentration values were conservatively high.

This table has been updated using actual dilution flows.

Table 14, errors were found in the dose evaluation. This table has been updated with the correct dose values.

3.0 3.1 A.

1.

2.

N ote:

B.

1.

2.

C.

1.

2.

D.

1.

2.

E.

1.

2.

F.

1.

2.

El Plant: River Bend Nuclear Station I

Year: 2021 Annual Radioactive Effluent Release Report GASEOUS EFFLUENTS Gas Effluent and Waste Disposal Report Table 1, Gaseous Effluents-Summation of All Releases Fission & Activation Gases Unit Quarter Quarter Quarter 1

2 3

Total Release Ci 5.48E+02*

6.49E+01 5.78E+01 Average release rate for the period

µCi/sec 7.05E+01 8.25E+00 7.28E+00 evate d Noble aas release due to minor fuel element leaks. No TRM limits were exceeded.

Iodine Total lodine-131 Ci 3.59E-03 1.56E-03 1.48E-03 Average release rate for the period

µCi/sec 4.62E-04 1.98E-04 1.87E-04 Particulates Particulates with half-lives > 8 days Ci 1.46E-04 7.0BE-05 2.28E-04 Average release rate for the period

µCi/sec 1.BBE-05 9.01 E-06 2.87E-05 Tritium Total Release Ci 2.38E+00 9.01 E-01 1.09E+00 Average release rate for the period

µCi/sec 3.06E-01 1.15E-01 1.37E-01 Gross Alpha Total Release Ci 0.00E+00 0.00E+00 0.00E+00 Average release rate for the period

µCi/sec 0.00E+00 0.00E+00 0.00E+00 Carbon-14 Total Release Ci 2.71E+00 2.74E+00 2.77E+00 Average release rate for the period

µCi/sec 3.49E-01 3.48E-01 3.48E-01

% of limit is located in the Radiological Impact to Man Table l Page 13 of 87 Quarter Annual 4

1.44E+01 6.86E+02*

1.81 E+00 2.17E+01 1.78E-03 8.41 E-03 2.24E-04 2.67E-04 7.16E-05 5.17E-04 9.01 E-06 1.64E-05 1.74E+00 6.10E+00 2.18E-01 1.93E-01 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2.77E+00 1.1E+01 3.48E-01 3.49E-01

Plant: River Bend Nuclear Station I

Vear: 2021 I Page 14 of 87 Annual Radioactive Effluent Release Report Table 2, Gaseous Effluents - Ground Level Release - Continuous Mode Radionuclide Released Xe-131m Xe-133 Xe-135m Xe-135 Total For Period 1-131 1-133 Total For Period Unit Ci Ci Ci Ci Ci Ci Ci Ci Quarter 1 0.00E+00 2.58E+00 2.49E+00 1.50E+00 6.57E+00 1.14E-04 5.00E-05 1.64E-04 Quarter 2 Quarter 3 Quarter 4 Total 2.25E+01 3.90E-01 0.00E+00 2.29E+01 2.36E-01 0.00E+00 9.63E-01 3.78E+00 1.22E+00 1.95E+00 2.17E+00 7.83E+00 6.97E-01 1.12E+00 4.02E+00 7.34E+00 2.46E+01 3.45E+00 7.16E+00 4.18E+01 3.14E-05 1.68E-04 8.50E-05 3.99E-04 3.38E-05 6.98E-05 6.65E-05 2.20E-04 6.52E-05 2.38E-04 1.51 E-04 6.19E-04

Plant: River Bend Nuclear Station I

Year: 2021 I Page 15 of 87 Annual Radioactive Effluent Release Report Table 3, Gaseous Effluents - Mixed Mode Release - Continuous Mode Radionuclide Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Released Kr-85m Ci 7.14E+OO 4.38E+OO 4.38E+01 1.75E+OO 5.71 E+01 Kr-87 Ci 8.72E-01 2.10E-01 O.OOE+OO O.OOE+OO 1.08E+OO Kr-88 Ci 5.96E+OO 1.50E+OO 4.98E-01 O.OOE+OO 7.96E+OO Xe-133m Ci 1.40E+OO O.OOE+OO O.OOE+OO O.OOE+OO 1.40E+OO Xe-133 Ci 1.84E+02 1.73E+01 3.33E-02 3.48E-02 2.02E+02 Xe-135m Ci 1.22E+02 3.06E+OO 9.60E-01 O.OOE+OO 1.26E+02 Xe-135 Ci 1.97E+02 3.14E+OO 7.66E+OO 5.48E+OO 2.14E+02 Xe-137 Ci 1.17E+01 3.61 E+OO O.OOE+OO O.OOE+OO 1.53E+01 Xe-138 1.12E+01 7.08E+OO 1.42E+OO O.OOE+OO 1.97E+01 Total For Period Ci 5.42E+02 4.02E+01 5.44E+01 7.27E+OO 6.44E+02 1-131 Ci 3.48E-03 1.53E-03 1.31E-03 1.69E-03 8.01 E-03 1-133 Ci 1.81 E-02 1.37E-02 1.18E-02 1.34E-02 5.70E-02 Total for Period Ci 2.16E-02 1.52E-02 1.32E-02 1.50E-02 6.50E-02 Co-58 Ci O.OOE+OO O.OOE+OO O.OOE+OO 9.52E-07 9.52E-07 Co-60 Ci 1.79E-05 8.06E-06 O.OOE+OO O.OOE+OO 2.60E-05 Zn-65 Ci 4.58E-06 O.OOE+OO O.OOE+OO O.OOE+OO 4.58E-06 Sr-89 Ci 1.45E-05 5.85E-06 1.63E-04 6.18E-05 2.45E-04 Sb-125 Ci 0.00E+OO O.OOE+OO 4.29E-06 O.OOE+OO 4.29E-06 Ba-140 Ci 1.03E-04 5.69E-05 4.18E-05 8.92E-06 2.11 E-04 La-140 Ci O.OOE+OO O.OOE+OO 1.87E-05 O.OOE+OO 1.87E-05 Ce-141 Ci 1.08E-06 O.OOE+OO O.OOE+OO O.OOE+OO 1.08E-06 Total For Period Ci 1.41 E-04 7.08E-05 2.28E-04 7.16E-05 5.12E-04

Plant: River Bend Nuclear Station I

Year: 2021 I Page 16 of 87 Annual Radioactive Effluent Release Report Table 4, Radioactive Gaseous Waste Sampling and Analysis Program Gaseous Release Sampling Type Frequency Main Plant Exhaust M

Duct Grab Sample Fuel Building M

Ventilation Exhaust Duct Grab Sample Radwaste Building M

Ventilation Exhaust Duct Grab Sample All Release Types Continuous as listed above Continuous Continuous Continuous Continuous W = At least once per 7 days M = At least once per 31 days Q = At least once per 92 days Minimum Analysis Frequency M

M M

w Charcoal Sample w

Particulate Sample M

Composite Particulate Sample Q

Composite Particulate Sample Noble Gas Monitor Type of Activity Lower Limit of Detection (LLD)

Analysis uC/ml Principle Gamma 1.00E-04 Emitters H-3 1.00E-06 Principle Gamma 1.00E-04 Emitters H-3 1.00E-06 Principle Gamma 1.00E-04 Emitters H-3 1.00E-06 1-131 1.00E-12 1-133 1.00E-10 Principle Gamma Emitters (1-131, 1.00E-11 Others)

Gross Alpha 1.00E-11 Sr-89, Sr-90 1.00E-11 Noble Gases Gross Beta or 1.00E-6 Gamma

4.0 4.1 A

1.

2.

8.

1.

2.

C.

1.

2.

Plant: River Bend Nuclear Station I

Year: 2021 Annual Radioactive Effluent Release Report LIQUID EFFLUENTS Liquid Effluent and Waste Disposal Report Table 5, Liquid Effluents-Summation of All Releases Fission & Activation Products Unit Quarter Quarter Quarter 1

2 3

Total Release (not including tritium, Ci 4.1 0E-03 1.0BE-02 4.37E-03 gases or alpha)

Average diluted concentration during

µCi/ml 4.11E-09 8.17E-09 3.0BE-09 period Tritium Total Release Ci 1.17E+01 6.76E+00 1.03E+01 Average diluted concentration during

µCi/ml 1.17E-05 5.12E-06 7.23E-06 period.

Dissolved & Entrained Gases Total Release Ci 3.79E-02 2.63E-02 1.03E-01 Average diluted concentration during

µCi/ml 3.79E-08 1.99E-08 7.27E-08 period D.

Gross Alpha Activity

-[

Page 17 of 87 Quarter Annual 4

2.28E-03 2.16E-02 1.55E-09 4.14E-09 7.21E+00 3.59E+01 4.91 E-06 6.90E-06 2.10E-02 1.88E-01 1.43E-08 3.62E-08

1.

Total Release Ci I 0.0E+00 I 0.00E+00 I 0.00E+00 I 0.00E+00 I 0.00E+00 I E.

F.

Volume Of Waste Released (prior to dilution)

Volume Of Dilution Water Used During Period Liters Liters 3.08E+06 3.40E+06 4.65E+06 2.94E+06 1.41 E+07 9.99E+08 1.32E+09 1.42E+09 1.47E+09 5.21 E+09

% of limit is located in the Radiological Impact to Man Table

Plant: River Bend Nuclear Station I

Year: 2021 I Page 18 of 87 Annual Radioactive Effluent Release Reoort Table 6, Liquid Effluents - Batch Release Radionuclide Unit Quarter 1 Quarter 2 Quarters Quarter 4 Total Released i..* t

- - . ******* /.*****:****** *.:*'::[~',':\\\\< i}{/.* ){'.'***** ****::£ti __ ;* *:;~.*,:~l~1;;:;:.,:,) if~,:_El~Cd/*.** 'it}~ \\..*. **/;J:::';c{f:'\\* "?

- *!.* *....**.* \\i:,';.,. *..*

- - i\\/.3;7(.J *.... ;,';\\.{'*:;,\\ ;;.*

,:;;c:,II/ '?.*'0: *ir,; \\.. *****.. };\\~:{.,.,, ***,r.<****i\\

Cr-51 Ci 5.18E-05 2.17E-04 1.02E-05 1.71E-05 2.96E-04 Mn-54 Ci 3.22E-05 5.02E-04 1.52E-04 4.55E-05 7.32E-04 Fe-59 Ci 0.00E+00 4.16E-05 0.00E+00 0.00E+00 4.16E-05 Co-58 Ci 5.38E-06 2.01 E-04 8.10E-06 2.59E-05 2.40E-04 Co-60 Ci 3.76E-03 9.56E-03 4.06E-03 1.42E-03 1.88E-02 Ni-65 Ci 0.00E+00 0.00E+00 9.22E-06 0.00E+00 9.22E-06 Zn-65 Ci 0.00E+00 1.21 E-04 7.52E-06 7.56E-06 1.36E-04 Sr-91 Ci 0.00E+00 0.00E+00 4.49E-06 0.00E+00 4.49E-06 Y-92 Ci 0.00E+00 0.00E+00 4.29E-05 1.21 E-04 1.64E-04 Zr-95 Ci 0.00E+00 1.73E-06 0.00E+00 0.00E+00 1.73E-06 Nb-95 Ci 0.00E+00 2.68E-06 2.71 E-06 0.00E+00 5.39E-06 Nb-97 Ci 8.49E-07 0.00E+00 0.00E+00 0.00E+00 8.49E-07 Mo-99 Ci 0.00E+00 0.00E+00 1.64E-05 8.91 E-06 2.53E-05 Tc-99m Ci 4.27E-06 6.32E-06 9.90E-07 5.08E-07 1.21 E-05 Ag-110m Ci 2.03E-05 0.00E+00 0.00E+00 0.00E+00 2.03E-05 Rh-105 Ci 1.51 E-05 1.81 E-05 5.37E-06 0.00E+00 3.85E-05 Sb-125 Ci 0.00E+00 3.36E-06 0.00E+00 0.00E+00 3.36E-06 Sb-126 Ci 0.00E+00 0.00E+00 6.69E-07 1.06E-06 1.73E-06 1-131 Ci 6.83E-06 0.00E+00 5.57E-06 3.29E-06 1.57E-05 1-133 Ci 0.00E+00 0.00E+00 1.31 E-06 0.00E+00 1.31 E-06 1-134 Ci 0.00E+00 0.00E+00 0.00E+00 2.33E-06 2.33E-06 1-135 Ci 0.00E+00 9.88E-06 5.85E-06 1.17E-05 2.74E-05 Cs-134 Ci 4.13E-06 1.82E-05 5.44E-06 1.69E-06 2.95E-05 Cs-136 Ci 0.00E+00 1.92E-06 0.00E+00 0.00E+00 1.92E-06 Cs-137 Ci 6.57E-06 4.33E-05 1.23E-05 2.39E-06 6.46E-05 Ba-141 Ci 5.83E-05 0.00E+00 0.00E+00 0.00E+00 5.83E-05 Ba-142 Ci 8.88E-05 0.00E+00 0.00E+00 5.84E-04 6.73E-04

Plant: River Bend Nuclear Station I

Vear: 2021 I Page 19 of 87 Annual Radioactive Effluent Release Report Table 6, Liquid Effluents - Batch Release La-140 Ci 3.87E-05 1.41 E-05 2.57E-05 2.01 E-05 9.86E-05 Ce-141 Ci 1.11 E-05 8.46E-06 3.08E-06 O.OOE+OO 2.27E-05 Ce-144 Ci O.OOE+OO 2.83E-05 O.OOE+OO 0.00E+OO 2.83E-05 Total For Period Ci 4.10E-03 1.08E-02 4.37E-03 2.28E-03 2.16E-02 H-3 Ci 1.17E+01 6.76E+OO 1.03E+01 7.21E+OO 3.59E+01 Total for Period Ci 1.17E+01 6.76E+OO 1.03E+01 7.21E+OO 3.59E+01 Radionuclide Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Released Kr-85m Ci O.OOE+OO O.OOE+OO 6.99E-06 0.00E+OO 6.99E-06 Kr-85 Ci O.OOE+OO O.OOE+OO 1.00E-04 2.03E-04 3.04E-04 Kr-87 Ci O.OOE+OO O.OOE+OO 8.42E-06 0.00E+OO 8.42E-06 Kr-88 Ci 1.86E-05 4.37E-05 5.53E-05 1.99E-05 1.37E-04 Kr-89 Ci O.OOE+OO O.OOE+OO 4.82E-02 0.00E+OO 4.82E-02 Xe-131m Ci 3.23E-04 O.OOE+OO O.OOE+OO O.OOE+OO 3.23E-04 Xe-133m Ci 3.98E-04 1.92E-04 5.78E-04 2.77E-04 1.45E-03 Xe-133 Ci 2.41 E-02 9.00E-03 1.97E-02 9.97E-03 6.27E-02 Xe-135m Ci O.OOE+OO O.OOE+OO 8.48E-04 0.00E+OO 8.48E-04 Xe-135 Ci 1.31 E-02 1.71 E-02 3.37E-02 1.05E-02 7.44E-02 Total For Period Ci 3.79E-02 2.63E-02 1.03E-01 2.10E-02 1.88E-01

Plant: River Bend Nuclear Station I

Year: 2021 l Page 20 of 87 Annual Radioactive Effluent Release Report Table 7, Supplemental Information for Liquid Effluents - Batch Mode Report for 2021 Units Quarter 1 Quarter 2 Quarter 3 Quarter4 Year Number of releases 40 41 73 51 205 Total Release Time minutes 1.56E+04 1.65E+04 2.41E+04 1.56E+04 7.17E+04 Maximum Release Time minutes 1.39E+03 1.09E+03 1.78E+03 3.79E+02 1.78E+03 Average Release Time minutes 3.89E+02 4.02E+02 3.30E+02 3.05E+02 3.50E+02 Minimum Release Time minutes 4.50E+01 2.72E+02 2.57E+02 7.00E+01 4.50E+01 Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Average Mississippi River stream flow during periods of release into ft3/sec 634,578 788,300 418,527 307,975 a flowing stream

Plant: River Bend Nuclear Station I

Year: 2021 I Page 21 of 87 Annual Radioactive Effluent Release Report Table 8, Radioactive Liquid Waste Sampling and Analysis Program Liquid Release Sampling Type Frequency Batch Waste Release (Liquid p

Radwaste Recovery Each Batch Sample Tanks) p Each Batch / M p

Each Batch p

Each Batch P = Prior to each radioactive release M = At least once per 31 days Q = At least once per 92 days Minimum Analysis Frequency p

Each Batch M

M Composite Q

Composite Type of Activity Lower Limit of Detection (LLD)

Analysis uC/ml Principle Gamma 5.00E-07 Emitters; except 5.00E-06 Ce-144 1-131 1.00E-06 Dissolved and Entrained Gases 1.00E-05 (Gamma Emitters)

H-3 1.00E-05 Gross Alpha 1.00E-07 Sr-89, Sr-90 5.00E-8 Fe-55 1.00E-06

Plant: River Bend Nuclear Station I

Vear: 2021 l Page 22 of 87 Annual Radioactive Effluent Release Report 5.0 SOLID WASTE

SUMMARY

5.1 Solid Waste Shipped Offsite for Burial or Disposal (Not Irradiated Fuel) 5.1.1 Types of Waste Table 9, Types of Solid Waste Summary Types of Waste Total Quantity Total Activity Est. Total (m3)

(Ci)

Error(%)

a. Spent resins, filter sludges, evaporator bottoms, etc.

1.30E+02 6.88E+01 25

b. Dry compressible waste, contaminated equip, etc.

7.57E+02 3.95E+00 25

c. Irradiated components, control rods, etc.

0.00E+00 0.00E+00 25

d. Other (Water, EHC, Waste Oil, etc.)

2.55E+01 1.95E-02 25 5.1.2 Estimate of major nuclide composition (by waste type) only> 1 % [Note 11 are reported.

Table 10, Major Nuclides Major Nuclide Composition Isotope Curies Mn-54 1.78%

1.23E+00 Fe-55 21.49%

1.48E+01 Co-60 61.94%

4.26E+01

a. Resins, filters, evaporator bottoms, etc.

Zn-65 1.58%

1.0BE+00 Sr-90 1.92%

1.32E+00 Cs-134 3.14%

2.16E+00 Cs-137 5.54%

3.81E+00

Plant: River Bend Nuclear Station I

Vear: 2021 Annual Radioactive Effluent Release Report Table 10, Major Nuclides

b. Dry compressible waste, contaminated equip, etc.

C. Irradiated components, control rods, etc.

Major Nuclide Composition

d. Other (Water, EHC, Waste Oil, Etc.)

Determined by Measurement & Correlation.

Packaged in Strong, Tight Liners.

No Solidification Agent or Absorbent Used.

Cr-51 Mn-54 Fe-55 Co-60 Ni-63 Zn-65 Sr-90 Tc-99 Cs-134 Cs-137 Ba-140 Ce-141 N/A Isotope Mn-54 Fe-55 Co-60 Ni-63 Zn-65 Sr-90 Tc-99 Ce-141 1.41%

1.98%

35.88%

43.48%

1.10%

1.60%

1.07%

4.71%

1.22%

1.18%

1.53%

2.85%

N/A 1.80%

37.93%

46.18%

1.30%

1.57%

1.15%

2.95%

2.18%

I Page 23 of 87 5.59E-02 7.87E-02 1.42E+00 1.72E+00 4.36E-02 6.36E-02 4.25E-02 1.87E-01 4.86E-02 4.69E-02 6.06E-02 1.13E-01 N/A Curies 3.51 E-04 7.41 E-03 9.03E-03 2.SSE-04 3.06E-04 2.25E-04 5.77E-04 4.27E-04

[Note 1] - "Major" radionuclide is equivalent to a "principle" radionuclide, i.e. greater than 1 percent of total activity.

Plant: River Bend Nuclear Station I

Year: 2021 I Page 24 of 87 Annual Radioactive Effluent Release Report 5.1.3 Solid Waste Disposition Table 11, Solid Waste Disposition (Specify Site or Unit)

Number of Mode of Transportation Destination Shipments 39 Truck Energy Solutions (Bear Creek) - Oak Ridge, TN 1

Truck Energy Solutions (ResinSolution) - Erwin, TN Table 12, Irradiated Fuel Shipments Disposition No Irradiated Fuel Shipments for 2021 Number of Mode of Transportation Destination Shipments N/A N/A N/A

Plant: River Bend Nuclear Station I

Year: 2021 l Page 25 of 87 Annual Radioactive Effluent Release Report 6.0 6.1 RADIOLOGICAL IMPACT TO MAN 1 0CFR Part50, Appendix I Evaluation Table 13, Dose Assessment Quarter 1 Quarter 2 Quarter 3 Liquid Effluent Dose Limit, 1.5 mrem 1.5 mrem 1.5 mrem Total Body Total Body Dose 2.69E-05 1.12E-04 4.79E-05

% of Limit 1.79E-03 7.43E-03 3.19E-03 Liquid Effluent Dose Limit, 5 mrem 5 mrem 5 mrem Any Organ Maximum Organ Dose 1.25E-04 7.38E-04 3.30E-04

% of Limit 2.49E-03 1.48E-02 6.60E-03 Gaseous Effluent Dose 5 mrad 5 mrad 5 mrad Limit, Gamma Air Gamma Air Dose 1.30E-01 2.49E-02 2.14E-02

% of Limit 2.59E+00 4.98E-01 4.28E-01 Gaseous Effluent Dose 10 mrad 10 mrad 10 mrad Limit, Beta Air Beta Air Dose 1.17E-01 5.00E-02 1.81 E-02

% of Limit 1.17E+00 5.00E-01 1.81E-01 Gaseous Effluent Organ Dose Limit (Iodine, 7.5 mrem 7.5 mrem 7.5 mrem1 Tritium, Particulates with >

8 day half-life)

Gaseous Effluent Organ Dose (Iodine, Tritium, 1.43E-01 6.54E-02 7.39E-02 Particulates with> 8 day half-life)

% of Limit 1.91E+00 8.72E-01 9.SSE-01 Quarter4 Annual 1.5 mrem 3 mrem 1.07E-05 2.00E-04 7.12E-04 6.65E-03 5 mrem 10 mrem 6.73E-05 1.28E-03 1.35E-03 1.28E-02 5 mrad 10 mrad 2.18E-02 1.98E-01 4.37E-01 1.98E+00 10 mrad 20 mrad 1.85E-02 2.04E-01 1.SSE-01 1.02E+00 7.5 mrem 15 mrem 7.73E-02 3.60E-01 1.03E+00 2.40E+00

Plant: River Bend Nuclear Station I

Year: 2021 I Page 26 of 87 Annual Radioactive Effluent Release Report Table 13, Dose Assessment (continued)

Quarter 1 Quarter 2 Quarter3 Quarter4 Annual Gaseous Effluent Organ Dose Limit (Carbon 7.5 mrem 7.5 mrem 7.5 mrem 7.5 mrem 15 mrem Bounding Calculation)

Gaseous Effluent Organ 6.2 Dose (Carbon 1.17E+00 1.17E+00 1.1BE+00 1.1BE+00 Bounding Calculation)

%of Limit 1.56E+01 1.56E+01 1.58E+01 1.58E+01 Dose to Members of the Public Inside the Site Boundary The maximally exposed member of the pubic was calculated to be member of the West Feliciana Parish Sheriff's Office (WFPSO) that opened a substation in a facility within the site boundary beginning in 2019. The office is estimated to be occupied during normal work hours for 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> per year. It should be noted that the liquid effluent pathway dose was not considered since the individual would not engage in activities that would allow exposure to this pathway.

4.70E+00 3.13E+01 Annual Critical Annual Total Annual Skin Annual Location Organ Dose Body Dose (mrem)

(mrem)

Dose (mrem)

Duration Factor Alligator Bayou 2.40E-05 1.6BE-06 2.71 E-07 4.57E-03 Deer Hunters 9.90E-04 1.1BE-04 2.32E-05 1.36E-01 Onsite RV Park 2.31 E-03 2.76E-04 5.41 E-05 2.92E-02 WFPSO Building 7.73E-03 9.24E-04 1.81 E-04 6.82E-02

Plant: River Bend Nuclear Station I

Vear: 2021 I Page 27 of 87 Annual Radioactive Effluent Release Report 6.3 40CFR Part 190 Evaluation for an Individual in the Unrestricted Area An assessment (see Table 14) was made of radiation doses to the likely most-exposed member of the public from River Bend and other nearby uranium fuel cycle sources (none within five miles). 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 total body or any organ, except the thyroid, which shall be limited to less than or equal to 75 mrem.

Table 14, EPA 40 CFR PART 190 Evaluation Total Body Thyroid Any Other Organ Dose Limit 25 mrem 75 mrem 25 mrem Dose (Excluding C-14) 1.94E-01 5.43E-01 1.96E-01

% of Limit 7.78E-01 7.24E-01 7.82E-01 Dose (Including C-14) 1.13E+00 1.48E+00 4.89E+00

% of Limit 4.53E+00 1.98E+00 1.96E+01 Gaseous dose including a bounding calculation of C-14 dose, direct shine, ISFSI and any other nuclear power related facility within 5 miles of the station are considered when calculating dose compliance with 40 CFR 190.

Plant: River Bend Nuclear Station I

Vear: 2021 I Page 28 of 87 Annual Radioactive Effluent Release Reoort 7.0 METEORLOGICAL DATA 7.1 Wind Cumulative joint frequency distributions and annual average data for continuous releases are listed below. The meteorological recovery for 2021 was 97.39%.

Joint Frequency Distributions 0.22-0.51-All Stability Classes Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 30 Foot Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-10.1-13.1-Direction 0.50 0.75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N

87 43 87 NNE 61 46 73 NE 74 48 74 ENE 77 66 76 E

63 90 96 ESE 47 89 100 SE 50 85 135 SSE 45 59 85 s

42 56 54 SSW 39 24 44 SW 47 43 47 WSW 51 51 35 w

62 75 38 WNW 68 71 63 NW 116 62 54 NNW 88 53 45 TOTAL 1017 961 1106 109 95 226 82 1

159 111 141 34 3

170 128 80 26 0

117 111 75 4

0 106 71 22 1

0 129 86 36 1

0 207 178 188 34 0

201 187 264 87 0

133 123 189 80 0

95 90 78 14 0

47 61 39 3

0 50 56 35 10 0

59 70 43 8

0 76 51 59 16 1

123 85 85 35 1

103 71 94 56 1

1884 1574 1654 491 7

Number of Calms: 23 Number of Invalid Hours: 42 Number of Valid Hours: 8718 Total Hours for the Period: 8760 0

0 0

1 0

0 0

0 1

0 0

>18.0 Total 0

730 0

629 0

600 0

526 0

449 0

488 0

877 0

928 0

677 0

384 0

287 0

288 0

355 0

405 0

561 0

511 0

8695

Plant: River Bend Nuclear Station I

Year: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

0 0

NNE 0

0 NE 0

0 ENE 0

0 E

1 1

ESE 0

1 SE 0

0 SSE 0

0 s

0 0

SSW 0

0 SW 0

1 WSW 0

0 w

0 0

WNW 0

0 NW 1

0 NNW 0

0 TOTAL 2

3 Annual Radioactive Effluent Release Report Stability Class A Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 30 Foot 0.76-1.0 3

4 4

4 7

4 2

1 1

2 1

1 1

3 4

2 44 Wind Speed (meters/second) 1.1-1.6-2.1-3.1-5.1-1.5 2.0 3.0 5.0 7.0 6

12 51 39 0

10 35 51 15 0

12 56 42 1

0 13 40 42 3

0 18 33 9

0 0

20 34 16 0

0 24 65 93 20 0

10 26 89 62 0

10 33 88 50 0

10 23 35 5

0 9

22 21 1

0 15 39 21 10 0

15 54 35 6

0 18 30 40 11 1

19 30 44 18 0

10 11 38 33 1

219 543 715 274 2

Number of Calms: 0 Number of Invalid Hours: 0 Number of Valid Hours: 1802 Total Hours for the Period: 1802 7.1-10.0 0

0 0

10.1-13.0 0

0 0

I Page 29 of 87 13.1-

>18.0 Total 18.0 0

0 111 0

0 115 0

0 102 0

0 69 0

0 75 0

0 204 0

0 188 0

0 182 0

0 75 0

0 55 0

0 86 0

0 111 0

0 103 0

0 116 0

0 95 0

0 1802

Plant: River Bend Nuclear Station I

Year: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

0 0

NNE 0

0 NE 0

0 ENE 0

1 E

0 0

ESE 0

0 SE 0

0 SSE 0

0 s

0 0

SSW 0

0 SW 0

0 WSW 0

0 w

0 0

WNW 0

0 NW 0

0 NNW 0

0 TOTAL 0

1 Annual Radioactive Effluent Release Report Stability Class B Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 30 Foot Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 0

0 1

0 2

0 1

0 0

1 1

1 0

1 1

2 11 1.5 2.0 3.0 5.0 7.0 10.0 2

5 8

1 0

0 5

6 7

1 0

0 9

6 1

5 0

0 3

11 3

0 0

0 4

3 1

1 0

0 11 0

2 0

0 0

5 8

3 1

0 0

2 7

14 5

0 0

3 6

14 2

0 0

5 8

5 0

0 0

3 3

3 0

0 0

4 3

0 0

7 5

2 1

0 0

5 2

3 1

0 0

9 2

4 1

1 0

5 4

4 3

0 0

82 79 74 22 1

0 NUMBER OF CALMS: O NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 270 TOTAL HOURS FOR THE PERIOD: 270 10.1-13.0 0

0 0

I Page 30 of 87 13.1-

>18.0 Total 18.0 0

0 16 0

0 19 0

0 22 0

0 18 0

0 11 0

0 13 0

0 18 0

0 28 0

0 25 0

0 19 0

0 10 0

0 8

0 0

15 0

0 12 0

0 18 0

0 270

Plant: River Bend Nuclear Station I

Vear: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

0 0

NNE 0

0 NE 0

2 ENE 0

2 E

0 1

ESE 0

1 SE 0

0 SSE 0

0 s

0 0

SSW 0

0 SW 0

0 WSW 0

0 w

0 0

WNW 0

0 NW 0

0 NNW 1

0 TOTAL 1

6 Annual Radioactive Effluent Release Report Stability Class C Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 30 Foot Wind Speed {meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 4

1 4

4 6

2 3

0 2

2 2

3 0

1 2

2 38 1.5 2.0 3.0 5.0 7.0 10.0 4

7 23 5

1 0

11 9

10 2

0 1

17 7

7 7

0 0

16 6

1 1

0 0

14 4

1 0

0 0

11 4

3 0

0 0

10 17 14 1

0 0

7 22 32 6

0 0

13 20 20 8

0 0

9 16 6

0 0

0 5

8 3

1 0

0 6

5 2

0 0

0 9

7 1

1 0

0 6

1 1

1 0

0 13 5

4 4

0 0

7 8

7 3

0 0

158 146 135 40 1

1 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 526 TOTAL HOURS FOR THE PERIOD: 526 10.1-13.0 0

0 0

I Page 31 of 87 13.1-

>18.0 Total 18.0 0

0 44 0

0 34 0

0 44 0

0 30 0

0 26 0

0 21 0

0 45 0

0 67 0

0 63 0

0 33 0

0 19 0

0 16 0

0 18 0

0 10 0

0 28 0

0 526

Plant: River Bend Nuclear Station I

Vear: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

2 1

NNE 0

3 NE 1

2 ENE 2

9 E

1 6

ESE 1

11 SE 2

11 SSE 1

5 s

0 8

SSW 0

4 SW 0

1 WSW 0

4 w

1 6

WNW 1

4 NW 2

5 NNW 0

2 TOTAL 14 82 Annual Radioactive Effluent Release Report Stability Class D Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 30 Foot Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 1.5 2.0 3.0 5.0 7.0 10.0 8

24 27 105 34 0

0 9

48 33 42 9

3 0

14 43 33 17 12 0

0 26 32 26 25 0

0 0

30 32 15 4

0 0

0 14 37 20 6

1 0

0 31 54 38 47 6

0 0

12 43 48 87 13 0

0 6

35 37 48 14 0

0 11 29 26 23 5

0 0

10 18 19 4

1 0

0 8

9 4

6 0

0 0

8 11 3

2 0

0 0

15 13 8

4 0

0 0

6 21 25 20 10 0

0 6

16 15 28 14 0

0 214 465 377 468 119 3

0 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 1742 TOTAL HOURS FOR THE PERIOD: 1742 10.1-13.0 0

0 0

I Page 32 of 87 13.1-

>18.0 Total 18.0 0

0 201 0

0 147 0

0 122 0

0 120 0

0 88 0

0 90 0

0 189 0

0 209 0

0 148 0

0 98 0

0 53 0

0 31 0

0 45 0

0 89 0

0 81 0

0 1742

Plant: River Bend Nuclear Station I

Vear: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

7 11 NNE 5

12 NE 5

12 ENE 13 16 E

16 26 ESE 15 37 SE 11 37 SSE 10 32 s

7 17 SSW 2

11 SW 6

20 WSW 9

16 w

13 21 WNW 8

18 NW 6

20 NNW 4

9 TOTAL 137 315 Annual Radioactive Effluent Release Report Stability Class E Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 30 Foot Wind Speed (meters/second}

0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 1.5 2.0 3.0 5.0 7.0 10.0 24 50 39 37 3

0 0

27 59 25 30 7

0 0

18 57 23 13 1

0 0

24 42 25 4

0 0

0 30 28 12 6

0 0

0 47 33 25 9

0 0

0 69 89 49 31 5

0 0

42 112 77 41 1

0 0

26 61 23 13 6

0 0

24 38 14 8

4 0

0 17 8

9 6

0 0

0 14 9

1 5

0 0

0 12 11 1

2 0

0 0

23 21 6

7 3

0 0

23 54 19 13 2

0 0

12 48 30 15 3

0 0

432 720 378 240 35 0

0 NUMBER OF CALMS: 4 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 2261 TOTAL HOURS FOR THE PERIOD: 2261 10.1-13.0 0

0 0

I Page 33 of 87 13.1-

>18.0 Total 18.0 0

0 171 0

0 165 0

0 129 0

0 124 0

0 118 0

0 166 0

0 291 0

0 315 0

0 153 0

0 101 0

0 66 0

0 54 0

0 60 0

0 86 0

0 137 0

0 121 0

0 2257

Plant: River Bend Nuclear Station I

Year: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

19 13 NNE 12 12 NE 14 17 ENE 13 13 E

9 14 ESE 12 14 SE A__O 17 SSE 13 12 s

15 18 SSW 6

7 SW 11 13 WSW 13 18 w

25 27 WNW 24 27 NW 28 10 NNW 16 13 TOTAL 240 245 Annual Radioactive Effluent Release Report Stability Class F Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 30 Foot Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 29 24 24 11 9

16 22 21 17 3

13 6

11 15 14 11 246 1.5 2.0 3.0 5.0 7.0 10.0 16 2

0 0

22 2

1 0

0 0

3Cf 2

0 0

11 1

0 0

6 1

1 0

0 0

12 3

0 0

21 1

0 1

0 0

20 6

0 0

10 1

0 0

4 1

0 0

4 0

0 0

4 1

0 0

3 0

0 0

6 2

3 0

0 0

4 3

0 0

15 2

2 0

0 0

188 28 7

1 0

0 NUMBER OF CALMS: 2 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 957 TOTAL HOURS FOR THE PERIOD: 957 10.1-13.0 0

0 0

I Page 34 of 87 13.1-

>18.0 Total 18.0 0

0 79 0

0 73 0

0 87 0

0 49 0

0 40 0

0 57 0

0 72 0

0 61 0

0 21 0

0 41 0

0 42 0

0 66 0

0 77 0

0 59 0

0 955

Plant: River Bend Nuclear Station I

Year: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

59 18 NNE 44 19 NE 54 15 ENE 49 25 E

36 42 ESE 19 25 SE 27 20 SSE 21 10 s

20 13 SSW 31 2

SW 30 8

WSW 29 13 w

23 21 WNW 35 22 NW 79 27 NNW 67 29 TOTAL 623 309 Annual Radioactive Effluent Release Report Stability Class G Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 30 Foot Wind Speed {meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 19 8

9 7

12 17 7

9 2

1 3

2 6

5 4

10 121 1.5 2.0 3.0 5.0 7.0 10.0 7

3 2

0 0

0 4

1 0

0 0

0 2

1 0

0 0

2 0

0 0

0 4

3 0

0 0

0 5

0 0

0 4

0 0

0 7

1 1

0 0

0 1

3 6

0 0

2 1

0 0

0 2

0 0

0 3

3 1

0 0

0 3

0 1

0 0

0 7

2 1

0 0

0 3

1 0

0 0

0 2

1 0

0 0

0 52 23 15 0

0 0

NUMBER OF CALMS: 17 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 1160 TOTAL HOURS FOR THE PERIOD: 1160 10.1-13.0 0

0 0

I Page 35 of 87 13.1-

>18.0 Total 18.0 0

0 108 0

0 76 0

0 81 0

0 83 0

0 97 0

0 66 0

0 58 0

0 49 0

0 45 0

0 37 0

0 43 0

0 51 0

0 54 0

0 72 0

0 114 0

0 109 0

0 1143

Plant: River Bend Nuclear Station I

Year: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

0 7

NNE 0

5 NE 0

11 ENE 3

4 E

2 8

ESE 0

5 SE 0

9 SSE 2

7 s

0 5

SSW 2

3 SW 0

10 WSW 1

8 w

1 5

WNW 0

6 NW 0

5 NNW 0

3 TOTAL 11 101 Annual Radioactive Effluent Release Report All Stability Classes Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 150 Foot Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 6

10 19 13 17 8

8 10 14 19 6

7 20 9

10 9

185 1.5 2.0 3.0 5.0 7.0 10.0 72 95 273 294 30 1

101 128 271 143 22 6

95 141 210 171 6

1 78 126 179 113 28 1

66 97 169 217 53 7

64 78 285 378 46 13 48 72 196 206 15 0

43 63 188 230 20 0

41 86 226 216 20 0

58 89 191 114 6

0 51 78 126 58 3

0 50 76 95 37 10 5

46 77 148 50 4

2 34 46 116 187 22 2

51 58 96 101 18 1

47 51 139 134 26 0

945 1361 2908 2649 329 39 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 228 NUMBER OF VALID HOURS: 8532 TOTAL HOURS FOR THE PERIOD: 8760 10.1-13.0 1

0 0

0 1

1 0

0 0

1 4

I Page 36 of 87 13.1-

>18.0 Total 18.0 0

0 779 0

0 686 0

0 654 0

0 545 0

0 637 0

0 878 0

0 554 0

0 563 0

0 608 0

0 482 0

0 332 0

0 289 0

0 353 0

0 422

0 0

340 0

0 410 0

0 8532

Plant: River Bend Nuclear Station I

Year: 2021 Wind 0.22-

0.51-Direction 0.50 0.75 N

0 0

NNE 0

0 NE 0

0 ENE 0

0 E

0 0

ESE 0

0 SE 0

0 SSE 0

0 s

0 0

SSW 0

0 SW 0

1 WSW 0

0 w

0 0

WNW 0

0 NW 0

0 NNW 0

0 TOTAL 0

1 Annual Radioactive Effluent Release Report Stability Class A Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 150 Foot Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 0

0 0

1.5 2.0 3.0 5.0 7.0 10.0 7

17 40 40 11 0

16 15 43 19 2

0 14 13 35 35 0

0 9

12 32 29 7

0 9

11 30 26 8

0 8

7 32 57 17 9

7 6

26 44 4

0 4

7 20 60 12 0

4 11 45 71 9

0 10 21 30 35 1

0 5

16 22 14 2

0 2

28 36 8

7 4

10 28 55 17 3

2 5

11 49 31 8

0 9

12 20 17 10 0

8 13 20 30 9

0 127 228 535 533 110 15 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 1549 TOTAL HOURS FOR THE PERIOD: 1549 10.1-13.0 0

0 0

I Page 37 of 87 13.1-

>18.0 Total 18.0 0

0 115 0

0 95 0

0 97 0

0 89 0

0 84 0

0 130 0

0 87 0

0 103 0

0 140 0

0 97 0

0 60 0

0 85 0

0 115 0

0 104 0

0 68 0

0 80 0

0 1549

Plant: River Bend Nuclear Station I

Year: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

0 0

NNE 0

0 NE 0

0 ENE 0

0 E

0 0

ESE 0

0 SE 0

0 SSE 0

0 s

0 0

SSW 0

0 SW 0

0 WSW 0

0 w

0 0

WNW 0

0 NW 0

0 NNW 0

0 TOTAL 0

0 Annual Radioactive Effluent Release Report Stability Class B Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 150 Foot Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 0

0 0

0 1

0 0

0 1

1.5 2.0 3.0 5.0 7.0.

10.0 5

2 6

11 0

0 1

4 6

6 1

0 3

9 7

5 1

0 2

5 10 6

0 0

3 4

2 3

0 1

3 8

7 24 5

0 0

1 6

7 1

0 0

0 10 17 2

0 3

1 11 9

2 0

4 4

6 11 0

0 2

2 4

1 0

0 5

4 5

0 1

0 6

2 8

3 0

0 3

4 5

5 2

1 2

3 2

6 1

1 2

2 9

6 1

0 44 55 104 120 17 3

NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 344 TOTAL HOURS FOR THE PERIOD: 344 10.1-13.0 0

0 0

I Page 38 of 87 13.1-

>18.0 Total 18.0 0

0 24 0

0 18 0

0 25 0

0 23 0

0 13 0

0 47 0

0 15 0

0 29 0

0 27 0

0 25 0

0 9

0 0

15 0

0 19 0

0 20 0

0 15 0

0 20 0

0 344

Plant: River Bend Nuclear Station I

Vear: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

0 0

NNE 0

0 NE 0

0 ENE 0

0 E

0 0

ESE 0

0 SE 0

0 SSE 0

0 s

0 0

SSW 0

0 SW 0

0 WSW 0

0 w

0 0

WNW 0

0 NW 0

0 NNW 0

0 TOTAL 0

0 Annual Radioactive Effluent Release Report Stability Class C Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 150 Foot Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 0

1 1

0 0

0 2

1.5 2.0 3.0 5.0 7.0 10.0 2

10 17 12 1

0 8

10 11 13 4

0 7

20 10 10 1

1 4

5 6

1 0

0 7

8 10 10 5

0 4

7 12 28 5

0 0

10 19 9

1 0

1 5

19 21 1

0 4

10 21 14 3

0 3

5 16 5

0 0

2 3

11 5

0 0

7 6

3 3

1 0

0 6

4 0

0 0

4 4

1 7

2 1

8 8

7 10 1

0 5

2 10 2

2 0

66 119 177 150 27 2

NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: O NUMBER OF VALID HOURS: 545 TOTAL HOURS FOR THE PERIOD: 545 10.1-13.0 1

0 0

1 2

I Page 39 of 87 13.1-

>18.0 Total 18.0 0

0 43 0

0 47 0

0 50 0

0 16 0

0 40 0

0 56 0

0 39 0

0 47 0

0 52 0

0 29 0

0 21 0

0 20 0

0 10 0

0 19 0

0 34 0

0 22 0

0 545

Plant: River Bend Nuclear Station I

Vear: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

0 0

NNE 0

0 NE 0

1 ENE 0

0 E

0 2

ESE 0

1 SE 0

2 SSE 0

0 s

0 0

SSW 0

0 SW 0

1 WSW 1

1 w

0 1

WNW 0

1 NW 0

0 NNW 0

0 TOTAL 1

10 Annual Radioactive Effluent Release Report Stability Class D Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 150 Foot Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 1

0 1

1 1

1 0

1 3

1 0

1 1

1 0

2 15 1.5 2.0 3.0 5.0 7.0 10.0 16 18 78 103 8

1 18 26 42 48 6

6 22 28 48 47 1

0 23 27 35 27 14 1

14 12 34 39 21 2

12 12 49 60 9

1 9

15 32 47 7

0 15 18 32 66 4

0 8

22 32 66 3

0 11 11 41 44 2

0 12 7

18 14 1

0 12 6

4 8

0 0

12 8

7 7

1 0

4 6

13 33 2

0 10 10 12 26 6

0 11 8

21 42 8

0 209 234 498 677 93 11 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 1748 TOTAL HOURS FOR THE PERIOD: 1748 10.1-13.0 0

0 0

I Page*4o of 87 13.1-

>18.0 Total 18.0 0

0 225 0

0 146 0

0 148 0

0 128 0

0 125 0

0 145 0

0 112 0

0 136 0

0 134 0

0 110 0

0 53 0

0 33 0

0 37 0

0 60 0

0 64 0

0 92 0

0 1748

Plant: River Bend Nuclear Station I

Year: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

0 0

NNE 0

0 NE 0

3 ENE 2

2 E

1 0

ESE 0

0 SE 0

2 SSE 1

0 s

0 1

SSW 0

0 SW 0

0 WSW 0

0 w

0 0

WNW 0

0 NW 0

0 NNW 0

0 TOTAL 4

8 Annual Radioactive Effluent Release Report Stability Class E Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 150 Foot

Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 0

1 1

4 3

1 1

1 0

3 1

2 1

0 1

1 21 1.5 2.0 3.0 5.0 7.0 10.0 15 21 78 75 10 0

25 27 71 42 9

0 19 33 57 51 2

0 15 32 44 27 7

0 16 38 62 116 19 4

15 21 120 134 9

2 11 17 60 67 2

0 8

12 54 53 1

0 9

18 72 44 3

0 18 20 66 17 3

0 7

16 43 15 0

0 13 13 23 10 1

1 8

12 22 16 0

0 9

9 16 78 6

0 6

8 18 17 0

0 6

10 29 38 6

0 200 307 835 800 78 7

NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 2262 TOTAL HOURS FOR THE PERIOD: 2262 10.1-13.0 0

0 0

0 1

1 0

0 0

0 2

I Page 41 of 87 13.1-

>18.0 Total 18.0 0

0 199 0

0 175 0

0 166 0

0 133 0

0 260 0

0 303 0

0 160 0

0 130 0

0 147 0

0 127 0

0 82 0

0 63 0

0 59 0

0 118 0

0 50 0

0 90 0

0 2262

Plant: River Bend Nuclear Station I

Vear: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

0 0

NNE 0

0 NE 0

2 ENE 0

0 E

0 3

ESE 0

0 SE 0

1 SSE 0

1 s

0 2

SSW 0

1 SW 0

1 WSW 0

1 w

0 0

WNW 0

1 NW 0

0 NNW 0

.1 TOTAL 0

14 Annual Radioactive Effluent Release Report Stability Class F Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 150 Foot Wind Speed (meters/second) 0.76-1.1-1.6-2.1-3.1-5.1-7.1-1.0 2

3 2

1 1

3 0

5 0

2 1

1 0

0 2

2 25 1.5 2.0 3.0 5.0 7.0 10.0 9

10 30 29 0

0 14 22 38 7

0 0

11 20 24 20 1

0 5

19 26 11 0

0 6

15 14 17 0

0 7

12 36 53 1

1 9

7 26 20 0

0 6

13 27 3

0 0

4 19 26 5

0 0

6 14 26 2

0 0

11 15 14 3

0 0

3 8

17 5

0 0

5 9

34 1

0 0

4 6

10 17 0

0 7

7 9

14 0

0 6

7 26 13 0

0 113 203 383 220 2

1 NUMBER OF CALMS: 9 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 961 TOTAL HOURS FOR THE PERIOD: 961 10.1-13.0 0

0 0

I Page 42 of 87 13.1-

>18.0 Total 18.0 0

0 80 0

0 84 0

0 80 0

0 62 0

0 56 0

0 113 0

0 63 0

0 55 0

0 56 0

0 51 0

0 45 0

0 35 0

0 49 0

0 38 0

0 39 0

0 55 0

0 961

Plant: River Bend Nuclear Station I

Year: 2021 Wind 0.22-0.51-Direction 0.50 0.75 N

0 7

NNE 0

5 NE 0

5 ENE 1

2 E

1 3

ESE 0

4 SE 0

4 SSE 1

6 s

0 2

SSW 2

2 SW 0

7 WSW 0

6 w

1 4

WNW 0

4 NW 0

5 NNW 0

2 TOTAL 6

68 Annual Radioactive Effluent Release Report Stability Class G Period of Record: 01/01/2021 - 12/31/2021 Elevation: Primary Sensors - 150 Foot Wind Speed (meters/second) 0.76-1.1-1 ~6-2.1-3.1-5.1-7.1-1.0 3

5 14 7

12 3

7 3

10 13 4

3 18 8

7 4

121 1.5 2.0 3.0 5.0 7.0 10.0 18 17 24 24 0

0 19 24 60 8

0 0

19 18 29 3

0 0

20 26 26 12 0

0 11 9

17 6

0 0

15 11 29 22 0

0 12 16 27 12 0

0 9

8 26 10 0

0 9

5 19 7

0 0

6 14 6

0 0

0 12 19 14 6

0 0

8 11 7

3 0

0 5

12 18 6

0 0

5 6

22 16 2

0 9

10 28 11 0

0 9

9 24 3

0 0

186 215 376 149 2

0 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 1123 TOTAL HOURS FOR THE PERIOD: 1123 10.1-13.0 0

0 0

I Page 43 of 87 13.1-

>18.0 Total 18.0 0

0 93 0

0 121 0

0 88 0

0 94 0

0 59 0

0 84 0

0 78 0

0 63 0

0 52 0

0 43 0

0 62 0

0 38 0

0 64 0

0 63 0

0 70 0

0 51 0

0 1123

7.2 Plant

River Bend Nuclear Station I

Year: 2021 Annual Radioactive Effluent Release Report Stability Class Table 15, Classification of Atmospheric Stability Stability Condition Pasquill Categories Hours

{Percentage)

Extremely Unstable A

21 Moderately Stable B

3 Slightly Unstable C

6 Neutral D

20 Slightly Stable E

26 Moderately Stable F

11 Extremely Stable G

13 Table 16, Atmospheric Dispersion and Deposition Rates for the Maximum Individual Dose Calculations Analysis Gamma air dose (3) and Beta Air Dose Maximum Receotor (4)

Resident Garden Meat animal Immersion Milk animal (5)

Other on-site Receptors Notes:

(1) All CHI/Q = 10-7 sec/m3 (2) All D/Q = 1 o-9 m-2 Location (meter$)

994 m WNW (Containment) 994 mWNW 7,000mWNW 115 m ENE 275 m N 2500 SW Ground Level Releases CHI/Q -

421.0 CHI/Q -

421.0 D/Q 50.3 CHI/Q -

3.58 D/Q 0.38 CHI/Q -

5977.0 D/Q 529.7 CHI/Q - 1644.0 D/Q 345.6 CHI/Q -

34.45 D/Q 3.35 (3) Maximum offsite location (property boundary) with highest CHI/Q (unoccupied).

(4) Maximum hypothetical occupied offsite location with highest CHI/Q and D/Q.

(5) No milk animal within 5 miles radius, hypothetical location in worst sector.

(6) Other onsite receptors I Page 44 of 87 Mixed Mode Releases CHI/Q - 33.1 CHI/Q - 33.1 D/Q

- 18.0 CHI/Q -.870 D/Q

-.223 CHI/Q - 407.5 D/Q 46.9 CHI/Q - 169.1 D/Q 68.4 CHI/Q -

4.65 D/Q

- 1.40 (7) Revisions to XIQ and D/Q can be performed using NUREG/CR-2919, XOQDOQ, Computer Program for the Meteorological Evaluation of Routine Effluent Releases at Nuclear Power Stations.

RBG-48149 I

Rev. 2021 I Page 45 of 87 Annual Radioactive Effluent Release Report Page 1 of 36 Groundwater Monitoring Well Sampling Results Table 17, Gamma Isotopic Results Station Sample Unit ID Date s

MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-124 1/19/2021 pCi/L 5.0E+00 3.1E+00 1.2E+01 4.2E+00 1.1E+01 5.2E+00 8.BE+00 1.1 E+01 4.BE+00 5.2E+00 2.4E+01 1.1E+01 MW-124 1/19/2021 pCi/L 6.0E+00 6.4E+00 1.0E+01 5.BE+00 8.6E+00 6.1E+00 8.4E+00 1.2E+01 5.9E+00 3.7E+00 3.4E+01 1.1 E+01 MW-125 1/19/2021 pCi/L 4.4E+00 4.SE+00 1.0E+01 4.BE+00 8.9E+00 5.3E+00 8.0E+00 1.3E+01 4.7E+00 5.0E+00 2.9E+01 9.2E+00 MW-142 1/19/2021 pCi/L 5.9E+00 4.1E+00 1.1 E+01 4.6E+00 1.2E+01 4.4E+00 8.0E+00 7.9E+00 5.9E+00 4.5E+00 2.8E+01 1.0E+01 MW-144 1/19/2021 pCi/L 3.4E+00 3.9E+00 8.0E+00 3.BE+00 7.6E+00 4.0E+00 7.SE+00 1.0E+01 3.9E+00 3.6E+00 2.3E+01 7.6E+00 MW-146 1/19/2021 pCi/L 4.SE+00 5.0E+00 1.2E+01 4.0E+00 9.SE+00 5.9E+00 8.BE+00 1.4E+01 5.2E+00 4.BE+00 3.8E+01 1.0E+01 MW-147 1/19/2021 pCi/L 4.4E+00 4.1E+00 8.4E+00 4.3E+00 8.2E+00 4.3E+00 6.2E+00 1.0E+01 3.BE+00 3.7E+00 2.3E+01 9.2E+00 MW-148 1/19/2021 pCi/L 4;9E+00 4.6E+00 1.0E+01 5.BE+00 1.0E+01 5.3E+00 8.7E+00 1.2E+01 5.4E+00 5.7E+00 3.5E+01 1.0E+01 MW-151 1/19/2021 pCi/L 6.0E+00 5.9E+00 1.4E+01 8.0E+00 1.3E+01 6.0E+00 9.9E+00 1.0E+01 7.1E+00 6.0E+00 3.6E+01 1.4E+01 MW-155 1/19/2021 pCi/L 4.0E+00 4.SE+00 9.0E+00 5.0E+00 9.7E+00 4.7E+00 7.6E+00 1.2E+01 5.0E+00 4.9E+00 2.5E+01 1.0E+01 MW-156 1/19/2021 pCi/L 2.7E+00 2.7E+00 6.3E+00 3.0E+00 5.6E+00 3.3E+00 4.9E+00 8.7E+00 2.9E+00 3.0E+00 1.8E+01 6.3E+00 MW-157 1/19/2021 pCi/L 5.1E+00 4.4E+00 1.2E+01 4.SE+00 1.0E+01 5.9E+00 8.3E+00 1.3E+01 4.SE+00 5.6E+00 3.0E+01 1.0E+01

RBG-48149 I

Rev. 2021 I Page 46 of 87 Annual Radioactive Effluent Release Report Page 2 of 36 -

Groundwater Monitoring Well Sampling Results Table 17, Gamma Isotopic Results Station Sample Unit ID Date s

MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-158 1/19/2021 pCi/L 3.3E+00 3.4E+00 7.3E+00 3.2E+00 7.0E+00 3.9E+00 6.7E+00 1.0E+01 3.3E+00 3.7E+00 2.4E+01 8.5E+00 MW-159 1/19/2021 pCi/L 2.BE+00 2.7E+00 6.2E+00 3.2E+00 5.9E+00 3.2E+00 5.3E+00 6.6E+00 2.9E+00 2.9E+00 1.BE+01 7.5E+00 MW-162 1/19/2021 pCi/L 6.2E+00 5.5E+00 1.5E+01 7.1E+00 1.4E+01 5.3E+00 9.2E+00 1.2E+01 6.3E+00 6.BE+00 3.1 E+01 1.3E+01 MW-164 1/19/2021 pCi/L 7.4E+00 6.2E+00 1.6E+01 9.1E+00 1.3E+01 6.2E+00 1.1 E+01 9.BE+00 6.3E+00 7.3E+00 3.7E+01 1.2E+01 MW-165 1/19/2021 pCi/L 6.3E+00 8.BE+00 1.6E+01 9.3E+00 9.7E+00 8.6E+00 1.0E+01 1.3E+01 8.9E+00 5.4E+00 3.1 E+01 7.1E+00 MW-165 1/19/2021 pCi/L 5.4E+00 6.4E+00 1.2E+01 6.6E+00 9.4E+00 5.1E+00 7.2E+00 1.0E+01 6.5E+00 6.5E+00 3.2E+01 9.3E+00 MW-178 1/19/2021 pCi/L 5.1E+00 5.BE+00 9.6E+00 6.0E+00 9.4E+00 5.3E+00 1.1E+01 1.4E+01 5.7E+00 5.3E+00 3.5E+01 9.3E+00 MW-179 1/19/2021 pCi/L 5.5E+00 5.5E+00 1.5E+01 6.2E+00 1.2E+01 6.3E+00 9.9E+00 1.5E+01 7.2E+00 5.4E+00 3.4E+01 9.2E+00 MW-179 1/19/2021 pCi/L 2.9E+00 2.BE+00 6.9E+00 3.0E+00 5.6E+00 3.1E+00 5.5E+00 8.4E+00 3.1E+00 2.9E+00 2.1 E+01 6.BE+00 MW-186 1/19/2021 pCi/L 6.7E+00 5.9E+00 1.2E+01 5.4E+00 1.1E+01 6.0E+00 1.2E+01

, 1.1 E+01 7.7E+00 6.7E+00 2.9E+01 1.0E+01 MW-187 1/19/2021 pCi/L 4.2E+00 5.1E+00 1.2E+01 6.1E+00 1.2E+01 5.2E+00 7.7E+00 7.BE+00 5.4E+00 5.2E+00 2.4E+01 1.1 E+01 MW-201 1/19/2021 pCi/L 5.9E+00 6.7E+00 1.3E+01 7.1E+00 9.9E+00 8.2E+00 1.1 E+01 1.3E+01 6.9E+00 6.1E+00 2.9E+01 1.2E+01

RBG-48149 I

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-211 1/19/2021 pCi/L 4.BE+00 4.7E+00 1.1 E+01 5.0E+00 9.BE+00 5.7E+00 8.2E+00 9.BE+00 4.5E+00 5.0E+00 2.8E+01 1.4E+01 MW-211 1/19/2021 pCi/L 6.0E+00 5.3E+00 1.2E+01 5.7E+00 9.7E+00 5.9E+00 8.1E+00 1.5E+01 5.0E+00 5.4E+00 3.5E+01 9.7E+00 MW-100 1/20/2021 pCi/L 7.0E+00 8.9E+00 1.2E+01 9.4E+00 1.3E+01 7.1E+00 1.5E+01 1.3E+01 9.5E+00 6.BE+00 3.4E+01 7.1 E+00 MW-110 1/20/2021 pCi/L 4.3E+00 5.9E+00 9.BE+00 6.9E+00 1.2E+01 6.2E+00 1.1 E+01 1.3E+01 6.4E+00 5.3E+00 4.0E+01 8.4E+00 MW-112 1/20/2021 pCi/L 4.9E+00 4.7E+00 1.3E+01 4.7E+00 1.1 E+01 5.9E+00 9.6E+00 1.3E+01 5.7E+00 5.3E+00 3.3E+01 1.2E+01 MW-114 1/20/2021 pCi/L 5.2E+00 4.6E+00 8.9E+00 6.0E+00 1.2E+01 5.0E+00 1.2E+01 1.4E+01 5.6E+00 5.0E+00 3.0E+01 1.2E+01 MW-116 1/20/2021 pCi/L 5.5E+00 6.5E+00 1.0E+01 5.2E+00 9.7E+00 7.1E+00 1.0E+01 1.5E+01 6.1E+00 5.5E+00 3.7E+01 9.1E+00 MW-118 1/20/2021 pCi/L 5.4E+00 5.BE+00 1.3E+01 6.0E+00 1.1E+01 5.5E+00 9.4E+00 1.5E+01 6.9E+00 6.0E+00 3.2E+01 1.0E+01 MW-126 1/20/2021 pCi/L 5.0E+00 6.3E+00 1.1E+01 7.4E+00 9.6E+00 5.BE+00 1.0E+01 1.5E+01 7.3E+00 5.4E+00 3.7E+01 1.0E+01 MW-137 1/20/2021 pCi/L 4.5E+00 4.4E+00 1.0E+01 4.4E+00 8.BE+00 4.7E+00 7.0E+00 1.2E+01 4.5E+00 4.4E+00 2.6E+01 7.7E+00 MW-139 1/20/2021 pCi/L 6.0E+00 7.2E+00 1.7E+01 1.0E+01 1.2E+01 6.9E+00 1.3E+01 1.3E+01 6.4E+00 7.0E+00 4.2E+01 9.9E+O0 MW-141 1/20/2021 pCi/L 6.2E+00 4.6E+00 1.1E+01 6.3E+00 1.0E+01 4.9E+00 1.1 E+01 1.5E+01 6.9E+00 5.1E+00 3.2E+01 1.0E+01

RBG-48149 I

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-153 1/20/2021 pCi/L 5.6E+00 6.7E+00 1.3E+01 6.4E+00 1.3E+01 6.0E+00 1.0E+01 1.5E+01 7.0E+00 5.7E+00 3.5E+01 1.1E+01 MW-161 1/20/2021 pCi/L 4.3E+00 6.5E+00 1.3E+01 5.2E+00 9.0E+00 5.6E+00 8.2E+00 1.4E+01 6.1E+00 6.0E+00 3.4E+01 1.4E+01 MW-170 1/20/2021 pCi/L 8.7E+00 7.7E+00 1.2E+01 8.7E+00 1.5E+01 7.7E+00 9.9E+00 1.0E+01 6.3E+00 6.3E+00 3.1E+01 1.4E+01 MW-182 1/20/2021 pCi/L 5.7E+00 6.4E+00 1.5E+01 7.BE+00 1.4E+01 6.BE+00 1.2E+01 1.0E+01 8.SE+00 7.4E+00 3.7E+01 1.3E+01 MW-185 1/20/2021 pCi/L 7.5E+00 6.9E+00 1.4E+01 6.BE+00 1.4E+01 6.9E+00 1.7E+01 1.3E+01 9.0E+00 8.1E+00 3.9E+01 1.0E+01 MW-188 1/20/2021 pCi/L 5.BE+00 7.3E+00 1.3E+01 4.9E+00 1.5E+01 6.6E+00 8.BE+00 1.2E+01 6.2E+00 6.SE+00 2.6E+01 1.2E+01 MW-205 1/20/2021 pCi/L 6.BE+00 6.4E+00 8.9E+00 5.9E+00 1.2E+01 6.6E+00 9.6E+00 1.1 E+01 7.0E+00 7.SE+00 3.3E+01 1.2E+01 MW-207 1/20/2021 pCi/L 7.2E+00 7.3E+00 1.6E+01 8.4E+00 1.6E+01 7.7E+00 1.4E+01 1.2E+01 9.SE+00 8.2E+00 3.6E+01 1.1 E+01 MW-207 1/20/2021 pCi/L 7.4E+00 6.SE+00 1.2E+01 7.1E+00 1.1 E+01 6.6E+OO 1.1 E+01 1.1 E+01 5.6E+00 5.BE+00 3.4E+01 9.3E+00 MW-209 1/20/2021 pCi/L 6.7E+00 8.6E+00 1.0E+01 7.1E+00 1.7E+01 7.4E+00 1.3E+01 1.2E+01 6.9E+00 7.BE+00 3.5E+01 1.4E+01 MW-209 1/20/2021 pCi/L 7.SE+00 7.1E+00 1.5E+01 7.SE+00 1.1 E+01 7.3E+00 1.2E+01 1.2E+01 7.SE+00 5.SE+00 3.5E+01 1.4E+01 MW-219 1/20/2021 pCi/L 7.SE+0O 6.4E+00 1.5E+01 6.2E+00 1.3E+01 6.9E+00 1.2E+01 1.2E+01 8.6E+OO 6.7E+00 3.5E+01 1.0E+01

RBG-48149 I

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-221 1/20/2021 pCi/L 4.5E+00 5.2E+00 1.1E+01 5.5E+00 9.2E+00 5.3E+00 9.1E+00 1.3E+01 4.9E+00 4.9E+00 3.0E+01 9.3E+00 MW-223 1/20/2021 pCi/L 6.5E+00 9.1E+00 1.6E+01 6.6E+00 1.3E+01 7.3E+00 1.5E+01 1.1 E+01 9.3E+00 6.6E+00 3.5E+01 1.3E+01 MW-225 1/20/2021 pCi/L 7.1E+00 5.5E+00 1.4E+01 6.0E+00 1.6E+01 7.0E+00 1.1 E+01 1.1 E+01 6.5E+00 7.1 E+00 3.4E+01 1.2E+01 MW-227 1/20/2021 pCi/L 5.5E+00 6.7E+00 9.4E+00 6.9E+00 1.4E+01 5.9E+00 1.2E+01 1.0E+01 7.7E+00 5.9E+00 3.4E+01 8.BE+00 MW-229 1/20/2021 pCi/L 6.7E+00 7.5E+00 1.4E+01 7.6E+00 1.4E+01 6.BE+00 1.2E+01 1.4E+01 7.3E+00 8.6E+00 4.0E+01 7.9E+00 MW-231 1/20/2021 pCi/L 6.1E+00 7.5E+00 1.3E+01 5.3E+00 1.3E+01 6.9E+00 9.4E+00 1.2E+01 7.0E+00 7.2E+00 3.1E+01 1.3E+01 MW-233 1/20/2021 pCi/L 6.3E+00 6.4E+00 1.7E+01 6.1E+00 1.7E+01 7.BE+00 1.3E+01 1.1 E+01 8.0E+00 7.1E+00 3.6E+01 1.1E+01 MW-235 1/20/2021 pCi/L 5.5E+00 4.BE+00 1.1 E+01 7.0E+00 9.9E+00 6.4E+00 1.1 E+01 7.7E+00 5.9E+00 6.1E+00 2.3E+01 1.3E+01 PZ-01 1/20/2021 pCi/L 4.3E+00 5.4E+00 1.3E+01 7.6E+00 1.2E+01 6.5E+00 1.0E+01 1.4E+01 6.BE+00 4.9E+00 3.9E+01 9.0E+00 SW-101 1/20/2021 pCi/L 7.4E+00 6.1E+00 1.5E+01 8.4E+00 1.7E+01 7.5E+00 1.5E+01 1.1 E+01 7.BE+00 8.2E+00 3.7E+01 1.4E+01 SW-102 1/20/2021 pCi/L 5.1E+00 5.7E+00 1.1 E+01 6.0E+00 1.1 E+01 5.2E+00 8.1E+00 7.7E+00 4.6E+00 5.2E+00 2.3E+01 1.1 E+01 SW-103 1/20/2021 pCi/L 6.BE+00 6.2E+00 1.3E+01 6.3E+00 1.4E+01 7.2E+00 1.2E+01 1.2E+01 5.7E+00 7.0E+00 3.5E+01 8.9E+00

RBG-48149 I

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 SW-104 1/20/2021 pCi/L 6.4E+00 7.4E+00 9.2E+00 8.3E+00 9.BE+00 6.6E+00 1.1 E+01 9.2E+00 8.4E+00 8.2E+00 3.4E+01 1.3E+01 MW-124 5/11/2021 pCi/L 4.6E+00 4.5E+00 1.1 E+01 4.1E+00 9.5E+00 4.7E+00 9.4E+00 1.5E+01 5.3E+00 4.3E+00 3.3E+01 1.2E+01 MW-125 5/11/2021 pCi/L 4.2E+00 5.2E+00 1.1 E+01 2.BE+00 1.0E+01 5.5E+00 8.9E+00 1.4E+01 4.2E+00 5.2E+00 3.7E+01 1.2E+01 MW-142 5/11/2021 pCi/L 2.3E+00 2.4E+00 6.0E+00 2.7E+00 4.BE+00 2.7E+00 4.5E+00 8.4E+00 2.2E+00 2.2E+00 1.8E+01 5.BE+00 MW-142 5/11/2021 pCi/L 4.3E+00 4.4E+00 1.1 E+01 3.BE+00 8.9E+00 4.BE+00 6.0E+00 1.4E+01 4.0E+00 4.1E+00 3.6E+01 1.0E+01 MW-144 5/11/2021 pCi/L 3.3E+00 3.5E+00 8.5E+00 3.4E+00 6.BE+00 3.5E+00 7.0E+00 1.4E+01 4.0E+00 3.6E+00 2.4E+01 7.2E+00 MW-146 5/11/2021 pCi/L 4.3E+00 4.1E+00 8.7E+00 3.7E+00 8.1E+00 4.6E+00 7.5E+00 1.5E+01 4.7E+00 4.5E+00 2.4E+01 7.9E+0O MW-147 5/11/2021 pCi/L 4.3E+00 4.4E+00 7.1E+00 4.5E+00 9.6E+00 4.7E+00 9.1E+00 1.5E+01 4.1E+00 4.4E+00 3.6E+01 1.0E+01 MW-148 5/11/2021 pCi/L 4.4E+00 4.2E+00 1.2E+01 3.6E+00 8.7E+00 4.8E+00 7.2E+00 1.4E+01 5.8E+00 4.5E+00 3.4E+01 1.2E+01 MW-158 5/11/2021 pCi/L 3.8E+00 4.BE+00 9.3E+00 3.4E+00 9.2E+00 4.9E+00 8.BE+00 1.5E+01 4.5E+00 4.1E+00 2.7E+01 1.0E+01 MW-159 5/11/2021 pCi/L 3.9E+00 4.1E+00 8.2E+00 4.1E+00 18.?E+00 4.4E+00 6.6E+00 1.5E+01 3.6E+00 4.3E+00 3.2E+01 1.1 E+01 MW-162 5/11/2021 pCi/L 5.0E+00 5.9E+00 1.0E+01 4.0E+00 1.2E+01 7.1E+00 1.0E+01 1.1 E+01 6.3E+00 5.7E+00 3.0E+01 1.0E+01

RBG-48149 I

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-207 5/11/2021 pCi/L 5.BE+00 5.2E+00 1.2E+01 6.4E+00 6.2E+00 8.9E+00 1.1 E+01 1.2E+01 7.4E+00 5.7E+00 2.9E+01 1.1 E+01 MW-229 5/11/2021 pCi/L 6.5E+00 8.1E+00 1.3E+01 8.6E+00 1.7E+01 8.1E+00 1.2E+01 1.4E+01 7.5E+00 8.2E+00 4.1E+01 1.4E+01 MW-100 5/12/2021 pCi/L 7.3E+00 7.5E+00 1.6E+01 7.9E+00 1.3E+01 7.BE+00 1.3E+01 1.3E+01 6.6E+00 8.0E+00 3.2E+01 8.0E+OO MW-106 5/12/2021 pCi/L 6.0E+00 7.3E+00 1.5E+01 6.1E+00 1.5E+01 6.5E+00 1.3E+01 1.3E+01 8.4E+00 7.5E+00 4.3E+01 9.BE+00 MW-106 5/12/2021 pCi/L 3.6E+00 4.9E+00 1.0E+01 5.6E+00 8.BE+00 5.7E+00 7.6E+00 9.0E+00 5.6E+00 4.6E+00 2.BE+01 8.9E+00 MW-110 5/12/2021 pCi/L 4.2E+00 5.3E+00 1.3E+01 4.7E+00 8.5E+00 4.0E+00 9.7E+00 1.4E+01 4.BE+00 5.1E+00 3.5E+01 1.0E+01 MW-112 5/12/2021 pCi/L 3.BE+00 4.3E+00 1.1 E+01 4.9E+00 8.5E+00 4.5E+00 7.4E+00 1.4E+01 4.BE+00 4.3E+00 3.0E+01 1.0E+01 MW-114 5/12/2021 pCi/L 3.3E+00 4.2E+00 8.4E+00 4.0E+00 8.1E+00 4.7E+00 8.1E+00 1.4E+01 4.4E+00 4.0E+00 3.1E+01 9.BE+00 MW-116 5/12/2021 pCi/L 2.9E+00 3.6E+00 7.1E+00 3.4E+00 6.BE+00 3.9E+00 5.BE+00 1.1 E+01 3.2E+00 3.2E+00 2.4E+01 7.5E+00 MW-118 5/12/2021 pCi/L 3.5E+00 3.9E+00 1.0E+01 4.1E+00 6.6E+00

4.3E+00 7.4E+00 1.2E+01 4.2E+00 3.BE+00 2.7E+01 1.1E+01 MW-120 5/12/2021 pCi/L 6.0E+00 5.2E+00 1.5E+01 7.1E+00 1.6E+01 7.6E+00 9.5E+00 1.3E+01 7.7E+00 6.4E+00 3.2E+01 9.5E+00 MW-122R 5/12/2021 pCi/L 5.BE+00 7.BE+00 1.4E+01 8.4E+00 1.3E+b1 6.6E+00 1.1 E+01 1.0E+01 7.0E+00 7.0E+00 3.5E+01 1.2E+01

RBG-48149-I Rev.2021 I Page 52 of 87 Annual Radioactive Effluent Release Report Page 8 of 36 Groundwater Monitoring Well Sampling Results Table 17, Gamma Isotopic Results Station Sample Unit ID Date s

MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-126 5/12/2021 pCi/L 4.7E+00 5.6E+00 1.2E+01 4.6E+00 9.5E+00 5.7E+OO 1.1 E+01 1.4E+01 5.4E+00 4:9E+00 3.6E+01 1.4E+01 MW-128 5/12/2021 pCi/L 7.6E+00 5.BE+00 1.7E+01 6.BE+00 1.3E+01 7.5E+00 1.3E+01 1.2E+01 6.4E+00 8.4E+00 3.2E+01 1.0E+01 MW-137 5/12/2021 pCi/L 3.9E+0O 3.9E+00 8.1E+00 4.2E+00 8.5E+00 4.5E+00 7.5E+00 1.4E+01 4.7E+00 4.1E+00 3.0E+01 7.4E+00 MW-139 5/12/2021 pCi/L 6.3E+00 4.3E+00 1.0E+01 7.9E+00 1.2E+01 6.1E+00 1.3E+01 1.1E+01 7.3E+00 6.4E+00 2.BE+01 1.2E+01 MW-141 5/12/2021 pCi/L 4.9E+00 4.BE+00 9.3E+00 4.2E+00 7.7E+00 4.BE+00 8.3E+00 1.5E+01 4.4E+00 4.3E+00 3.3E+01 8.3E+00 MW-151 5/12/2021 pCi/L 6.7E+00 6.2E+00 1.4E+01 2.6E+00 1.0E+01 6.4E+00 1.0E+01 1.1 E+01 5.BE+00 5.4E+00 2.6E+01 6.4E+00 MW-153 5/12/2021 pCi/L 4.4E+00 4.5E+00 9.9E+00 4.3E+00 8.3E+00 4.5E+00 8.0E+00 1.5E+01 5.0E+00 4.7E+00 3.2E+01 1.2E+01 MW-155 5/12/2021 pCi/L 4.0E+00 4.4E+00 1.1 E+01 4.9E+00 9.3E+00 4.2E+00 7.9E+00 1.4E+01 5.2E+00 4.6E+00 3.4E+01 1.1 E+01 MW-156 5/12/2021 pCi/L 3.1E+00 4.BE+00 1.2E+01 4.7E+00 9.6E+00 5.2E+00 8.9E+00 1.4E+01 5.6E+00 4.5E+00 3.2E+01 1.1E+01 MW-157 5/12/2021 pCi/L 3.9E+00 4.0E+00 9.1E+00 4.4E+00 8.3E+00 4.5E+00 7.9E+00 1.4E+01 4.2E+00 4.4E+00 2.9E+01 9.7E+00 MW-161 5/12/2021 pCi/L 3.3E+00 3.5E+00 8.BE+00 3.9E+00 7.1E+00 3.7E+00 6.9E+00 1.1 E+01 4.0E+00 3.6E+00 2.BE+01 8.7E+00 MW-164 5/12/2021 pCi/L 3.6E+00 3.6E+00 7.5E+00 3.6E+00 7.0E+00 3.7E+00 7.0E+00 6.2E+00 3.9E+00 4.6E+00 1.9E+01 6.1E+00

RBG-48149 I

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-164 5/12/2021 pCi/L 5.3E+00 6.3E+00 1.2E+01 6.6E+00 1.1 E+01 4.BE+00 8.6E+00 8.5E+00 5.9E+00 5.4E+00 2.7E+01 7.6E+00

)

MW-165 5/12/2021 pCi/L 6.3E+00 6.4E+00 1.1 E+01 5.3E+00 1.3E+01 6.3E+00 9.7E+00 1.1E+01 6.0E+00 5.7E+00 2.9E+01 1.3E+01 MW-170 5/12/2021 pCi/L 4.BE+00 3.6E+00 7.7E+00 5.9E+00 9.2E+00 4.2E+00 7.2E+00 8.9E+00 5.BE+00 4.4E+00 2.3E+01 7.2E+00 MW-178 5/12/2021 pCi/L 2.BE+00 3.2E+00 7.2E+00 2.9E+00 6.1E+00 3.2E+00 5.6E+00 1.0E+01 3.1E+00 3.0E+00 2.2E+01 7.9E+00 MW-179 5/12/2021 pCi/L 2.BE+00 3.0E+00 7.5E+00 3.0E+00 6.2E+00 2.9E+00 5.6E+00 9.6E+00 3.1E+00 2.9E+00 2.0E+01 7.0E+00 MW-180 5/12/2021 pCi/L 5.BE+00 5.1E+00 1.0E+01 6.2E+00 9.3E+00 5.BE+00 8.4E+00 1.1E+01 6.0E+00 4.9E+00 2.6E+01 8.5E+00 MW-185 5/12/2021 pCi/L 5.2E+00 6.2E+00 1.4E+01 5.4E+00 1.3E+01 6.6E+00 1.0E+01 1.0E+01 7.8E+00 5.7E+00 2.8E+01 1.2E+01 MW-186 5/12/2021 pCi/L 5.4E+00 5.4E+00 1.0E+01 3.2E+00 1.3E+01 6.0E+00 8.9E+00 9.1E+00 5.9E+00 6.2E+00 2.4E+01 8.5E+00 MW-187 5/12/2021 pCi/L 6.1E+00 7.3E+00 1.7E+01 8.4E+00 1.7E+01 7.8E+00 1.0E+01 1.1 E+01 6.0E+00 5.7E+00 2.6E+01 9.2E+00 MW-201 5/12/2021 pCi/L 4.0E+00 5.0E+00 1.2E+01 5.4E+00 1.2E+01 4.9E+00 9.6E+00 7.9E+00 4.3E+00 5.1E+00 2.4E+01 5.9E+00 MW-203 5/12/2021 pCi/L 5.BE+00 5.1E+00 1.4E+01 7.9E+00 4.4E+00 6.3E+00 1.1 E+01 1.0E+01 7.0E+00 7.3E+00 3.0E+01 1.3E+01 MW-211 5/12/2021 pCi/L 2.1E+00 2.3E+00 5.5E+00 2.3E+00 4.5E+00 2.3E+00 4.1E+00 7.5E+00 2.4E+00 2.2E+00 1.6E+01 5.4E+00

RBG8149 I

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-211 5/12/2021 pCi/L 2.6E+00 3.1E+00 6.2E+00 3.0E+00 5.6E+00 3.6E+00 6.0E+00 1.0E+01 3.0E+00 3.1E+00 2.1E+01 5.BE+00 MW-213 5/12/2021 pCi/L 4.6E+00 5.5E+00 9.9E+00 5.5E+00 1.0E+01 5.4E+00 1.0E+01 8.9E+00 5.7E+00 5.3E+00 2.7E+01 9.BE+00 MW-219 5/12/2021 pCi/L 5.4E+00 7.5E+00 1.3E+01 6.0E+00 1.1 E+01 7.BE+00 9.5E+00 1.2E+01 3.3E+00 5.9E+00 3.0E+01 1.1E+01 MW-221 5/12/2021 pCi/L 3.6E+00 4.0E+00 8.3E+00 3.6E+00 7.6E+00 3.9E+00 7.1E+00 1.3E+01 3.9E+00 3.BE+00 2.6E+01 8.6E+00 MW-223 5/12/2021 pCi/L 6.7E+00 9.3E+00 1.8E+01 8.5E+00 1.6E+01 9.7E+00 1.2E-i-01 1.2E+01 7.BE+00 8.6E+00 3.7E+01 1.4E+01 MW-231 5/12/2021 pCi/L 5.9E+00 6.0E+00 1.3E+01 6.3E+00 1.1 E+01 5.BE+00 9.2E+00 1.1 E+01 6.4E+00 5.6E+00 2.8E+01 1.1E+01 MW-235 5/12/2021 pCi/L 5.0E+00 6.2E+00 1.5E+01 6.1E+00 1.1 E+01 5.1E+00 1.1 E+01 1.1 E+01 6.3E+00 6.1E+00 2.3E+01 8.2E+00 MW-235 5/12/2021 pCi/L 5.0E+00 4.BE+00 6.4E+00 6.BE+00 1.5E+01 6.9E+00 1.0E+01 1.0E+01 6.7E+00 5.BE+00 2.7E+01 1.0E+01 PZ-01 5/12/2021 pCi/L 2.BE+00 2.5E+00 5.5E+00 3.0E+00 5.0E+00 2.7E+00 4.7E+00 8.BE+00 2.BE+00 2.6E+00 1.BE+01 5.7E+00 PZ-01 5/12/2021 pCi/L 3.7E+00 5.0E+00 9.9E+00 4.1E+00 8.4E+00 4.7E+00 8.BE+00 1.5E+01 4.BE+00 4.0E+00 3.3E+01 1.0E+01 PZ-03 5/12/2021 pCi/L 7.9E+00 7.9E+00 1.3E+01 5.1E+00 1.3E+01 7.1E+00 1.1 E+01 1.1 E+01 8.2E+00 5.7E+00 2.7E+01 4.4E+00 MW-130 5/13/2021 pCi/L 5.7E+00 4.0E+00 8.3E+00 6.5E+00 1.3E+01 6.7E+00 1.0E+01 8.6E+00 6.1E+00 5.6E+00

.2.6E+01 9.6E+00

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-131 5/13/2021 pCi/L 7.5E+00 6.9E+00 1.4E+01 7.3E+00 1.7E+01 6.7E+00 1.1 E+01 1.1 E+01 7.9E+00 7.0E+00 3.3E+01 1.3E+01 MW-132 5/13/2021 pCi/L 7.6E+00 8.4E+00 1.7E+01 9.3E+00 1.7E+01 8.5E+00 1.1 E+01 1.2E+01 8.2E+00 6.6E+00 3.6E+01 1.0E+01 MW-134 5/13/2021 pCi/L 9.6E+00 6.9E+00 1.1 E+01 7.2E+00 1.4E+01 9.4E+00 1.4E+01 1.3E+01 9.5E+00 7.1E+00 3.3E+01 7.4E+00 MW-134 5/13/2021 pCi/L 4.9E+00 7.5E+00 1.2E+01 6.2E+00 1.1 E+01 6.7E+00 8.0E+00 9.2E+00 6.0E+00 5.2E+00 2.4E+01 7.9E+00 MW-167 5/13/2021 pCi/L 6.0E+00 5.BE+00 1.5E+01 8.1E+00 1.2E+01 7.9E+00 1.1 E+01 1.1 E+01 7.2E+00 6.3E+00 3.BE+01 1.1E+01 MW-169 5/13/2021 pCi/L 7.4E+00 7.0E+00 1.2E+01 6.7E+00 1.4E+01 8.6E+00 1.1 E+01 1.2E+01 7.BE+00 6.6E+00 3.6E+01 1.4E+01 MW-182 5/13/2021 pCi/L 6.2E+00 7.6E+00 2.0E+01 8.6E+00 1.6E+01 8.1E+00 1.2E+01 1.3E+01 9.1E+00 7.5E+00 3.4E+01 1.3E+01 MW-205 5/13/2021 pCi/L 5.BE+00 6.9E+00 1.2E+01 7.2E+00 1.6E+01 8.3E+00 1.1 E+01 1.3E+01 8.6E+00 7.4E+00 3.3E+01 9.6E+00 MW-209 5/13/2021 pCi/L 6.BE+00 7.0E+00 1.5E+01 5.4E+00 1.2E+01 6.9E+00 1.1 E+01 1.0E+01 7.2E+00 6.2E+00 2.9E+01 7.BE+00 MW-215 5/13/2021 pCi/L 7.2E+00 6.5E+00 1.0E+01 4.5E+00 1.4E+01 7.0E+00 1.1 E+01 1.1 E+01 8.5E+00 7.4E+00 3.3E+01 8.1E+00 MW-217 5/13/2021 pCi/L 8.2E+00 7.1E+00 1.5E+01 7.BE+00 1.1 E+01 7.6E+00 1.2E+01 1.2E+01 6.2E+00 7.BE+00 3.5E+01 8.3E+00 MW-225 5/13/2021 pCi/L 7.0E+00 6.0E+00 1.2E+01 7.3E+00 1.6E+01 7.3E+00 1.3E+01 1.2E+01 7.9E+00 6.7E+00 3.4E+01 1.4E+01

RBG-48149 I

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-227 5/13/2021 pCi/L 6.9E+00 7.8E+00 1.8E+01 7.9E+00 1.6E+01 8.6E+00 1.3E+01 1.3E+01 8.5E+00 8.6E+00 3.8E+01 1.5E+01 MW-233 5/13/2021 pCi/L 7.0E+00 7.1E+00 1.2E+01 6.4E+00 1.3E+01 6.2E+00 1.3E+01 1.2E+01 5.7E+00 6.5E+00 3.3E+01 1.0E+01 SW-101 5/13/2021 pCi/L 5.1E+00 3.7E+00 1.2E+01 4.1E+00 1.0E+01 5.5E+00 1.0E+01 9.0E+00 5.0E+00 5.1E+00 2.4E+01 9.0E+00 SW-102 5/13/2021 pCi/L 7.3E+00 6.8E+00 1.2E+01 7.0E+00 1.3E+01 7.5E+00 1.1 E+01 1.3E+01 7.2E+00 9.3E+00 3.5E+01 7.2E+O0 SW-103 5/13/2021 pCi/L 7.3E+00 7.6E+00 1.3E+01 7.4E+00 1.1E+01 6.9E+00 1.1 E+01 7.1E+00 7.3E+00 5.4E+00 2.6E+01 9.6E+00 SW-104 5/13/2021 pCi/L

7.2E+00 5.8E+00 1.5E+01 7.1E+00 1.1 E+01 7.0E+00 1.2E+01 1.2E+01 8.4E+00 8.2E+00 3.1 E+01 1.3E+01 MW-188 6/22/2021 pCi/L 4.7E+00 5.1E+00 1.1 E+01 2.8E+00 1.2E+01 4.6E+00 7.2E+00 6.2E+00 5.3E+00 4.4E+00 1.9E+01 7.1 E+00 MW-100 8/17/2021 pCi/L 8.3E+00 7.0E+00 1.3E+01 8.3E+00 1.7E+01 5.3E+00 1.3E+01 1.4E+01 7.5E+00 5.8E+00 4.0E+01 1.3E+01 MW-124 8/17/2021 pCi/L 1.8E+00 2.1E+00 4.9E+00 1.7E+00 3.4E+00 2.1E+00 3.7E+00 1.3E+01 1.9E+00 1.7E+00 2.1 E+01 6.5E+00 MW-125 8/17/2021 pCi/L 2.0E+00 2.4E+00 5.3E+00 2.2E+00 4.5E+00 2.4E+00 3.9E+00 1.3E+01 2.2E+00 2.0E+00 2.3E+01 8.6E+00 MW-126 8/17/2021 pCi/L 1.5E+00 1.8E+00 4.5E+00 1.8E+00 3.4E+00 1.8E+00 3.1E+00 1.1E+01 1.8E+00 1.6E+00 1.9E+01 6.8E+00 MW-142 8/17/2021 pCi/L 1.7E+00 1.8E+00 4.4E+00 1.8E+00 3.5E+00 2.1E+00 3.7E+00 1.2E+01 1.8E+00 1.7E+00 1.9E+01 6.8E+00

RBG-48149 I

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-142 8/17/2021 pCi/L 1.2E+00 1.5E+00 3.3E+00 1.4E+00 2.6E+00 1.5E+00 2.6E+00 8.6E+00 1.3E+00 1.3E+00 1.4E+01 4.9E+00 MW-144 8/17/2021 pCi/L 5.5E+00 7.6E+00 1.3E+01 5.9E+00 1.5E+01 7.0E+00 1.2E+01 1.4E+01 8.7E+00 7.3E+00 3.6E+01 1.2E+01 MW-146 8/17/2021 pCi/L 1.8E+00 1.8E+00 4.4E+00 1.8E+00 3.5E+00 2.1E+00 3.4E+00 1.0E+01 1.8E+00 1.8E+00 1.8E+01 6.6E+00 MW-147 8/17/2021 pCi/L 2.1E+00 2.5E+00 5.2E+00 2.0E+00 4.3E+00 2.4E+00 4.2E+00 1.5E+01 2.3E+00 2.2E+00 2.6E+01 7.6E+00 MW-148 8/17/2021 pCi/L 6.5E+00 7.0E+00 1.5E+01 8.4E+00 1.4E+01 9.1E+00 1.3E+01 1.4E+01 7.7E+00 8.9E+00 3.2E+01 1.5E+01 MW-151 8/17/2021 pCi/L 6.3E+00 5.9E+00 1.1 E+01 7.7E+00 1.6E+01 8.3E+00 1.2E+01 1.4E+01 6.1E+00 7.4E+00 3.7E+01 9.4E+00 MW-155 8/17/2021 pCi/L 1;9E+00 2.2E+00 5.1E+00 1.9E+00 4.1E+00 2.2E+00 3.8E+00 1.1 E+01 2.1E+00 1.9E+00 2.1E+01 7.3E+00 MW-156 8/17/2021 pCi/L 1.8E+00 2.1E+00 4.7E+00 1.8E+00 3.6E+00 2.1E+00 3.7E+00 1.2E+01 2.0E+00 1.8E+00 1.9E+01 6.5E+00 MW-157 8/17/2021 pCi/L 1.1E+00 1.2E+00 2.7E+00 1.2E+00 2.2E+00 1.4E+00 2.3E+00 8.7E+00 1.2E+00 1.1E+00 1.3E+01 4.3E+00 MW-158 8/17/2021 pCi/L 1.3E+00 1.4E+00 3.0E+00 1.4E+00 2.7E+00 1.5E+00 2.5E+00 7.7E+00 1.3E+00 1.2E+00 1.4E+01 4.3E+00 MW-159 8/17/2021 pCi/L 1.8E+00 2.1E+00 5.2E+00 1.7E+00 3.4E+00 2.2E+00 3.9E+00 1.3E+01 1.9E+00 1.9E+00 2.2E+01 7.4E+00 MW-162 8/17/2021 pCi/L 6.8E+00 4.5E+00 1.2E+01 5.6E+00 1.6E+01 6.9E+00 1.1 E+01 9.7E+00 7.1E+00 6.3E+00 3.2E+01 1.0E+01

RBG-48149 I

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-164 8/17/2021 pCi/L 6.1E+00 5.2E+00 1.1 E+01 5.2E+00 1.1 E+01 6.2E+00 1.1E+01 1.2E+01 7.2E+00 5.6E+00 2.7E+01 1.1 E+01 MW-165 8/17/2021 pCi/L 7.5E+00 6.8E+00 1.3E+01 8.1E+00 1.5E+01 8.4E+00 1.3E+01 1.2E+01 8.7E+00 6.1E+00 3.7E+01 1.2E+01 MW-178 8/17/2021 pCi/L 1.8E+00 2.1E+00 5.0E+00 1.9E+00 3.6E+00 2.2E+00 3.6E+00 1.2E+01 2.1E+00 1.8E+00 2.0E+01 6.9E+00 MW-179 8/17/2021 pCi/L 1.6E+00 1.9E+00 3.9E+00 1.6E+00 3.0E+00 1.9E+00 3.1E+00 1.2E+01 1.6E+00 1.6E+00 2.0E+01 6.0E+OO MW-185 8/17/2021 pCi/L 6.2E+00 5.3E+00 9.5E+00 6.6E+00 9.3E+00 4.8E+00 1.1 E+01 1.0E+01 4.6E+00 4.9E+00 2.3E+01 1.1 E+01 MW-186 8/17/2021 pCi/L 6.0E+00 5.8E+00 1.2E+01 7.2E+00 1.5E+01 5.3E+00 1.0E+01 9.7E+00 5.9E+00 5.5E+00 3.2E+01 1.4E+01 MW-187 8/17/2021 pCi/L 7.8E+00 7.0E+00 1.9E+01 7.1E+00 1.1 E+01 7.7E+00 1.4E+01 1.4E+01 1.1 E+01 8.4E+00 4.2E+01 1.3E+01 MW-187 8/17/2021 pCi/L 8.0E+00 5.4E+00 1.8E+01 7.6E+00 7.5E+00 8.7E+00 1.1 E+01 1.2E+01 6.4E+00 8.6E+00 4.2E+01 8.9E+00 MW-188 8/17/2021 pCi/L 5.7E+00 6.2E+00 1.1 E+01 6.5E+00 1.2E+01 6.0E+00 1.1 E+01 1.1 E+01 6.0E+00 5.7E+00 3.3E+01 1.0E+01 MW-211 8/17/2021 pCi/L 1.6E+00 1.9E+00 4.3E+00 1.5E+00 3.4E+00 1.8E+00 3.3E+00 1.3E+01 1.7E+00 1.7E+00 2.0E+01 6.4E+00 MW-211 8/17/2021 pCi/L 2.0E+00 2.3E+00 5.2E+00 1.9E+00 3.8E+00 2.3E+00 4.0E+00 1.5E+01 2.0E+00 2.0E+00 2.3E+01 6.8E+OO MW-110 8/18/2021 pCi/L 1.6E+00 1.9E+00 4.5E+00 1.6E+00 3.5E+00 2.0E+00 3.5E+00 1.2E+01 1.8E+00 1.6E+00 2.0E+01 7.0E+00

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-112 8/18/2021 pCi/L 1.1E+00 1.3E+00 2.9E+00 1.3E+00 2.1E+00 1.3E+00 2.4E+00 8.7E+00 1.2E+00 1.1 E+00 1.4E+01 4.7E+00 MW-114 8/18/2021 pCi/L 1.8E+00 1.8E+00 4.6E+00 1.8E+00 3.0E+00 2.1E+00 3.3E+00 1.2E+01 1.8E+00 1.6E+00 1.9E+01 6.6E+00 MW-116 8/18/2021 pCi/L 1.6E+00 1.9E+00 4.4E+00 1.5E+00 3.4E+00 2.0E+00 3.3E+00 1.3E+01 1.8E+00 1.6E+00 2.0E+01 6.6E+00 MW-118 8/18/2021 pCi/L 1.8E+00 2.1E+00 4.7E+00 1.6E+00 3.6E+00 2.2E+00 4.1 E+00 1.3E+01 2.0E+00 2.0E+00 2.1 E+01 7.9E+00 MW-137 8/18/2021 pCi/L 1.6E+00 1.8E+00 4.1E+00 1.7E+00 3.0E+00 2.0E+00 3.3E+00 1.2E+01 1.7E+00 1.6E+00 2.0E+01 6.4E+00 MW-139 8/18/2021 pCi/L 1.8E+00 2.0E+00 4.7E+00 1.7E+00 3.6E+00 2.2E+00 3.3E+00 1.2E+01 2.0E+00 1.8E+00 2.0E+01 6.5E+00 MW-141 8/18/2021 pCi/L 2.0E+00 2.3E+00 5.4E+00 2.2E+00 4.1E+00 2.4E+00 4.3E+00 1.4E+01 2.1E+00 1.9E+00 2.3E+01 6.8E+00 MW-153 8/18/2021 pCi/L 1.9E+00 2.1E+00 4.9E+00 2.0E+00 3.6E+00 2.4E+00 4.2E+00 1.4E+01 2.1E+00 2.1E+00 2.5E+01 6.7E+00 MW-161 8/18/2021 pCi/L 1.7E+00 2.1E+00 4.8E+00 1.7E+00 3.5E+00 2.1E+00 3.6E+00 1.2E+01 2.0E+00 1.9E+00 2.0E+01 5.9E+00 MW-170 8/18/2021 pCi/L 7.1E+00 7.1E+00 1.1 E+01 7.5E+00 1.2E+01 6.4E+00 1.2E+01 1.1E+01 9.2E+00 7.7E+00 3.8E+01 1 :oE+01 MW-182 8/18/2021 pCi/L 7.2E+00 6.7E+00 1.8E+01 6.9E+00 1.7E+01 7.6E+00 8.0E+00 1.4E+01 9.0E+00 6.5E+00 3.4E+01 8.7E+00 MW-209 8/18/2021 pCi/L 6.7E+00 8.4E+00 1.4E+01 8.5E+00 1.8E+01 6.1E+00 1.3E+01 1.1E+01 8.0E+00 7.0E+00 3.8E+01 1.3E+01

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-1.34 CS-137 BA-140 LA-140 MW-209 8/18/2021 pCi/L 7.3E+00 8.3E+00 1.5E+01 6.3E+00 1.7E+01 7.9E+00 1.1 E+01 1.3E+01 8.7E+00 6.SE+00 2.9E+01 8.8E+00 MW-221 8/18/2021 pCi/L 1.6E+00 1.8E+00 4.6E+00 1.9E+00 3.4E+00 2.0E+00 3.3E+00 1.1 E+01 1.7E+00 1.6E+00 1.8E+01 6.8E+00 MW-221 8/18/2021 pCi/L 1.7E+00 2.0E+00 4.5E+00 1.6E+00 3.5E+00 2.1E+00 3.8E+00 1.4E+01 1.9E+00 1.8E+00 2.3E+01 6.7E+00 MW-223 8/18/2021 pCi/L 5.9E+00 5.8E+00 1.2E+01 3.8E+00 7.1E+00 6.3E+00 8.6E+00 1.0E+01 7.3E+00 6.6E+00 3.3E+01 1.2E+01 PZ-01 8/18/2021 pCi/L 1.8E+00 2.2E+00 4.6E+00 1.9E+00 4.0E+00 2.3E+00 3.9E+00 1.4E+01 2.1E+00 2.0E+00 2.4E+01 7.1E+00 SW-101 8/18/2021 pCi/L 7.1E+00 7.3E+00 1.6E+01 9.0E+00 1.6E+01 6.6E+00 1.0E+01 1.2E+01 9.0E+00 8.3E+00 3.6E+01 9.8E+00 SW-103 8/18/2021 pCi/L 5.8E+00 5.4E+00 1.3E+01 5.4E+00 9.5E+00 6.0E+00 1.0E+01 8.8E+00 6.2E+00 5.9E+00 2.6E+01 6.7E+00 SW-104 8/18/2021 pCi/L 5.3E+00 5.5E+00 1.2E+01 5.3E+00 1.0E+01 4.8E+00 1.1 E+01 1.0E+01 6.1E+00 5.6E+00 2.8E+01 1.0E+01 MW-110 11/2/2021 pCi/L 1.7E+00 2.0E+00 4.3E+00 2.1E+00 3.4E+00 2.2E+00 3.4E+00 8.1E+00 2.0E+00 1.8E+00 1.7E+01 6.2E+00 MW-112 11/2/2021 pCi/L 1.9E+00 2.1E+00 4.7E+00 1.9E+00 3.7E+00 2.2E+00 3.9E+00 9.2E+00 2.2E+00 2.1E+00 1.7E+01 5.2E+00 MW-112 11/2/2021 pCi/L 1.6E+00 1.9E+00 4.3E+00 1.8E+00 3.5E+00 1.9E+00 3.4E+00 7.3E+00 1.9E+00 1.7E+00 1.5E+01 5.0E+00 MW-114 11/2/2021 pCi/L 2.0E+00 2.1E+00 4.8E+00 1.9E+00 3.8E+00 2.3E+00 3.7E+00 9.0E+00 2.1E+00 2.0E+00 1.7E+01 5.4E+00

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-116 11/2/2021 pCi/L 2.0E+00 2.1E+00 4.8E+00 1.9E+00 3.8E+00 2.2E+00 3.9E+00 8.2E+00 2.1E+00 1.9E+00 1.6E+01 5.7E+00 MW-118 11/2/2021 pCi/L 1.8E+00 1.8E+00 4.1E+00 2.0E+00 3.7E+00 2.2E+00 3.7E+00 7.8E+00 2.0E+00 1.8E+00 1.6E+01 5.0E+00 MW-124 11/2/2021 pCi/L 1.9E+00 2.1E+00 4.6E+00 2.2E+00 4.0E+00 2.2E+00 3.9E+00 9.0E+00 2.1E+00 2.1E+00 1.6E+01 4.7E+00 MW-125 11/2/2021 pCi/L 1.6E+00 1.8E+00 4.2E+00 1.7E+00 3.5E+00 1.8E+00 3.2E+00 7.4E+00 1.9E+00 1.6E+00 1.5E+01 4.6E+00 MW-137 11/2/2021 pCi/L 1.8E+00 2.1E+00 4.4E+00 1.9E+00 3.8E+00 2.2E+00 3.6E+00 7.5E+00 2.1E+00 2.0E+00 1.6E+01 5.2E+00 MW-139 11/2/2021 pCi/L 1.7E+00 1.9E+00 4.3E+00 1.8E+00 3.3E+00 2.0E+00 3.4E+00 7.5E+00 1.9E+00 1.7E+00 1.4E+01 4.7E+00 MW-141 11/2/2021 pCi/L 1.7E+00 1.9E+00 4.1E+00 1.7E+00 3.6E+00 2.0E+00 3.5E+00 7.4E+00 2.0E+00 1.8E+00 1.4E+01 4.5E+00 MW-142 11/2/2021 pCi/L 1.7E+00 2.0E+00 3.9E+00 2.0E+00 3.6E+00 2.0E+00 3.4E+00 6.9E+00 1.7E+00 1.6E+00 1.4E+01 5.0E+00 MW-144 11/2/2021 pCi/L 6.0E+00 6.8E+00 1.2E+01 5.1E+00 1.2E+01 6.0E+00 8.9E+00 1.3E+01 6.5E+00 7.0E+00 3.9E+01 7.7E+00 MW-146 11/2/2021 pCi/L 1.8E+00 2.0E+00 4.3E+00 1.8E+00 3.7E+00 1.9E+00 3.5E+00 8.1E+00 2.0E+00 1.7E+00 1.6E+01 5.1E+00 MW-147 11/2/2021 pCi/L 1.5E+00 1.8E+00 3.5E+00 1.7E+00 3.1E+00 1.8E+00 3.1E+00 7.1E+00 1.7E+00 1.6E+00 1.3E+01 4.4E+00 MW-148 11/2/2021 pCi/L 5.9E+00 4.6E+00 1.2E+01 6.7E+00 9.1E+00 5.6E+00 9.6E+00 9.5E+00 5.8E+00 6.1E+00 3.1E+01 1.1 E+01

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-155 11/2/2021 pCi/L 1.4E+00 1.5E+00 3.3E+00 1.5E+00 2.BE+00 1.5E+00 2.7E+00 5.BE+00 1.5E+00 1.5E+00 1.1 E+01 4.2E+00 MW-156 11/2/2021 pCi/L 1.BE+00 2.1E+00 4.BE+00 2.0E+00 4.0E+00 2.2E+00 3.BE+00 8.4E+00 2.0E+00 2.1E+00 1.6E+01 5.4E+00 MW-158 11/2/2021 pCi/L 1.2E+00 1.4E+00 3.1E+00 1.4E+00 2.7E+00 1.5E+00 2.4E+00 6.6E+00 1.3E+00 1.2E+00 1.2E+01 3.9E+00 MW-159 11/2/2021 pCi/L 1.6E+00 2.0E+00 4.2E+00 1.7E+00 3.3E+00 2.1E+00 3.4E+00 8.9E+00 1.BE+00 1.7E+00 1.7E+01 5.5E+OO MW-162 11/2/2021 pCi/L 4.3E+00 4.6E+00 8.2E+00 5.3E+00 8.BE+00 5.5E+00 8.3E+00 1.1 E+01 5.3E+00 3.9E+00 2.9E+01 1.0E+01 MW-172 11/2/2021 pCi/L 5.6E+00 4.BE+00 1.2E+01 5.9E+00 1.2E+01 5.9E+00 1.1 E+01 1.2E+01 5.BE+00 5.9E+00 3.2E+01 1.1 E+01 MW-174 11/2/2021 pCi/L 6.6E+00 6.7E+00 1.2E+01 7.2E+00 1.3E+01 8.4E+00 1.1 E+01 1.4E+01 7.7E+00 6.3E+00 3.6E+01 1.3E+01 MW-185 11/2/2021 pCi/L 6.5E+00 5.5E+00 1.5E+01 7.BE+00 1.3E+01 7.7E+00 1.4E+01 1.0E+01 6.5E+00 7.4E+00 3.1E+01 1.1 E+01 MW-188 11/2/2021 pCi/L 6.9E+00 6.6E+00 1.5E+01 7.7E+00 1.2E+01 6.1E+00 1.0E+01 1.1 E+01 7.3E+00 6.4E+00 3.5E+01 1.1 E+01 MW-205 11/2/2021 pCi/L 4.9E+00 5.7E+00 1.3E+01 5.4E+00 1.0E+01 5.9E+00 9.1E+00 1.3E+01 5.4E+00 5.7E+00 2.7E+01 1.2E+01 MW-205 11/2/2021 pCi/L 5.5E+00 5.7E+00 1.4E+01 5.BE+00 1.4E+01 6.6E+00 9.4E+00 1.1 E+01 5.7E+00 5.6E+00 3.3E+01 1.3E+01 MW-221 11/2/2021 pCi/L 2.1E+00 2.2E+00 4.BE+00 2.1E+00 4.2E+00 2.2E+00 3.9E+00 7.9E+00 2.2E+00 2.0E+00 1.7E+01 6.2E+00

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-221 11/2/2021 pCi/L 1.7E+00 2.0E+00 4.7E+00 1.BE+00 3.6E+00 2.1E+00 3.5E+00 6.6E+00 2.0E+00 1.BE+00 1.5E+01 4.BE+00 MW-227 11/2/2021 pCi/L 4.4E+00 6.1E+00 1.7E+01 6.1E+00 1.2E+01 6.SE+00 1.1 E+01 1.4E+01 7.3E+00 5.2E+00 2.6E+01 8.7E+00 PZ-01 11/2/2021 pCi/L

< 9.9E-01 1.2E+00 2.6E+00 1.3E+00 2.3E+00 1.3E+00 2.3E+00 5.1E+00 1.2E+00 1.1E+00 9.9E+00 3.4E+00 MW-04 11/3/2021 pCi/L 4.0E+00 4.BE+00 8.7E+00 5.0E+00 9.0E+00 5.7E+00 7.9E+00 1.3E+01 5.3E+00 4.6E+00 2.9E+01 1.2E+01 MW-05 11/3/2021 pCi/L 2.1E+00 2.SE+00 4.SE+00 2.SE+00 4.2E+00 2.SE+00 4.0E+00 4.4E+00 2.4E+00 2.SE+00 1.2E+01 3.BE+00 MW-08 11/3/2021 pCi/L 2.3E+00 2.SE+00 5.3E+00 2.7E+00 4.6E+00 2.7E+00 4.4E+00 5.1E+00 2.BE+00 2.7E+00 1.3E+01 4.0E+00 MW-100 11/3/2021 pCi/L 8.1E+00 3.9E+00 1.4E+01 6.1E+00 1.3E+01 6.7E+00 9.6E+00 1.0E+01 7.3E+00 6.3E+00 2.7E+01 1.3E+01 MW-103 11/3/2021 pCi/L 8.2E+00 8.BE+00 1.8E+01 9.3E+00 1.2E+01 9.BE+00 1.8E+01 1.4E+01 1.0E+01 9.4E+00 4.7E+01 1.3E+01 MW-104 11/3/2021 pCi/L 7.2E+00 9.0E+00 1.5E+01 7.SE+00 1.9E+01 8.9E+00 1.1 E+01 1.3E+01 9.3E+00 7.BE+00 4.2E+01 1.3E+01 MW-106 11/3/2021 pCi/L 1.7E+00 1.9E+00 3.6E+00 1.9E+00 3.9E+00 1.9E+00 3.1E+00 3.BE+00 1.9E+00 1.9E+00 1.0E+01 2.9E+00 MW-106 11/3/2021 pCi/L 4.7E+00 4.9E+00 8.6E+00 5.6E+00 8.0E+00 4.6E+00 1.1 E+01 9.BE+00 5.0E+00 6.0E+00 2.5E+01 8.9E+00 MW-107 11/3/2021 pCi/L 2.4E+00 2.6E+00 5.4E+00 2.4E+00 5.3E+00 2.7E+00 4.3E+00 4.4E+00 2.7E+00 2.6E+00 1.2E+01 4.1E+00

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-108 11/3/2021 pCi/L 4.SE+00 5.SE+00 1.4E+01 8.4E+00 1.3E+01 6.9E+00 1.3E+01 1.3E+01 9.6E+00 6.6E+00 3.4E+01 1.3E+01 MW-122R 11/3/2021 pCi/L 5.0E+00 5.4E+00 1.0E+01 7.SE+00 1.2E+01 5.SE+00 1.0E+01 1.5E+01 5.9E+00 6.6E+00 3.7E+01 1.1 E+01 MW-126 11/3/2021 pCi/L 2.1E+00 2.3E+00 5.4E+00 2.0E+00 4.4E+00 2.2E+00 4.2E+00 1.1 E+01 2.4E+00 2.2E+00 2.0E+01 6.0E+00 MW-128 11/3/2021 pCi/L 6.9E+00 6.2E+00 1.5E+01 6.SE+00 1.2E+01 6.5E+00 1.1E+01 1.4E+01 8.4E+00 8.0E+00 3.3E+01 1.0E+01 MW-130 11/3/2021 pCi/L 5.2E+00 6.4E+00 1.3E+01 6.7E+00 1.2E+01 4.7E+00 1.5E+01 9.0E+00 7.SE+00 4.9E+00 2.7E+01 9.4E+00 MW-131 11/3/2021 pCi/L 6.0E+00 5.7E+00 1.3E+01 6.2E+00 1.3E+01 5.3E+00 9.3E+00 1.3E+01 5.3E+00 4.5E+00 4.2E+01 1.2E+01 MW-14 11/3/2021 pCi/L 2.4E+00 2.2E+00 4.6E+00 2.3E+00 4.6E+00 2.4E+00 3.9E+00 4.SE+00 2.4E+00 2.3E+00 1.1 E+01 4.0E+00 MW-151 11/3/2021 pCi/L 4.4E+00 3.4E+00 1.1 E+01 4.4E+00 1.0E+01 4.1E+00 7.3E+00 1.3E+01 5.1E+00 4.7E+00 2.9E+01 7.9E+00 MW-153 11/3/2021 pCi/L 2.1E+00 2.6E+00 5.6E+00 2.4E+00 4.7E+00 2.7E+00 4.2E+00 9.9E+00 2.2E+00 2.3E+00 2.0E+01 6.5E+00 MW-157 11/3/2021 pCi/L 1.9E+00 2.1E+00 4.SE+00 2.0E+00 4.0E+00 2.3E+00 3.7E+00 9.5E+00 2.1E+00 2.0E+00 1.8E+01 5.9E+00 MW-161 11/3/2021 pCi/L 1.6E+00 1.9E+00 4.3E+00 1.SE+00 3.7E+00 1.SE+00 3.4E+00 8.SE+00 1.9E+00 1.7E+00 1.6E+01 5.0E+00 MW-164 11/3/2021 pCi/L 6.1E+00 7.4E+00 9.0E+00 7.2E+00 1.4E+01 7.1E+00 8.6E+00 1.2E+01 7.4E+00 5.4E+00 3.4E+01 1.2E+01

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-165 11/3/2021 pCi/L 6.5E+00 5.4E+00 1.0E+01 6.2E+00 1.4E+01 7.1E+00 1.2E+01 1.2E+01 6.7E+00 6.5E+00 3.6E+01 8.2E+00 MW-167 11/3/2021 pCi/L 6.3E+00 7.2E+00 1.5E+01 6.0E+00 1.6E+01 7.4E+00 1.0E+01 1.3E+01 7.8E+00 6.8E+00 3.0E+01 1.0E+01 MW-170 11/3/2021 pCi/L 5.9E+00 6.0E+00 1.3E+01 5.7E+00 1.3E+01 7.2E+00 1.2E+01 1.4E+01 8.4E+00 7.1E+00 3.7E+01 1.2E+01 MW-178 11/3/2021 pCi/L 1.0E+00 1.3E+00 2.7E+00 1.1E+00 2.1E+00 1.3E+00 2.3E+00 5.9E+00 1.3E+00 1.2E+00 1.0E+01 3.7E+00 MW-178 11/3/2021 pCi/L 2.1E+00 2.4E+00 5.4E+00 2.1E+00 4.6E+00 2.6E+00 4.3E+00 9.5E+00 2.4E+00 2.2E+00 2.0E+01 6.6E+00 MW-179 11/3/2021 pCi/L 1.5E+00 1.7E+00 3.9E+00 1.6E+00 3.1E+00 1.9E+00 3.1E+00 7.7E+00 1.7E+00 1.6E+00 1.5E+01 4.3E+00 MW-18 11/3/2021 pCi/L 2.4E+00 2.7E+00 5.6E+00 2.7E+00 4.7E+00 2.8E+00 4.9E+00 5.0E+00 2.6E+00 2.9E+00 1.3E+01 5.2E+00 MW-180 11/3/2021 pCi/L 7.6E+00 6.3E+00 1.8E+01 9.0E+00 1.5E+01 6.6E+00 1.2E+01 1.3E+01 9.8E+00 6.2E+00 3.7E+01 1.5E+01 MW-182 11/3/2021 pCi/L 4.2E+00 3.7E+00 9.2E+00 4.3E+00 9.7E+00 4.9E+00 7.8E+00 1.2E+01 4.8E+00 5.1E+00 3.0E+01 7.3E+00 MW-186 11/3/2021 pCi/L 7.4E+00 7.5E+00 1.6E+01 6.7E+00 1.3E+01 6.1E+00 1.1 E+01 1.2E+01 6.3E+00 7.0E+00 3.3E+01 1.0E+01 MW-187 11/3/2021 pCi/L 6.3E+00 5.9E+00 1.3E+01 7.6E+00 1.6E+01 6.3E+00 1.2E+01 1.2E+01 7.4E+00 6.1E+00 3.2E+01 8.5E+00 MW-201 11/3/2021 pCi/L 3.5E+00 4.2E+00 9.6E+00 3.8E+00 8.3E+00 3.9E+00 7.1E+00 9.2E+00 3.5E+00 3.5E+00 2.2E+01 7.2E+00

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MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-207 11/3/2021 pCi/L 5.BE+00 6.5E+00 1.4E+01 6.2E+00 1.5E+01 7.3E+00 1.2E+01 1.1 E+01 5.BE+00 5.9E+00 3.8E+01 1.3E+01 MW-209 11/3/2021 pCi/L 7.2E+00 6.6E+00 1.6E+01 8.BE+00 1.6E+01 7.2E+00 9.0E+00 1.3E+01 7.2E+00 6.5E+00 3.5E+01 1.1 E+01 MW-209 11/3/2021 pCi/L 4.6E+00 4.BE+00 1.1E+01 4.4E+00 8.BE+00 5.7E+00 6.9E+00 1.2E+01 5.9E+00 4.6E+00 3.2E+01 1.2E+01 MW-211 11/3/2021 pCi/L 1.9E+00 2.0E+00 5.1E+00 1.9E+00 3.9E+00 2.2E+00 4.0E+00 8.6E+00 2.0E+00 2.0E+00 1.BE+01 5.BE+00 MW-211 11/3/2021 pCi/L 2.2E+00 2.2E+00 5.3E+00 2.3E+00 4.3E+00 2.6E+00 4.4E+00 1.0E+01 2.6E+00 2.2E+00 2.1 E+01 6.3E+00 MW-213 11/3/2021 pCi/L 5.5E+00 5.4E+00 1.3E+01 4.BE+00 1.3E+01 4.7E+00 1.0E+01 1.4E+01 5.4E+00 4.5E+00 3.5E+01 1.2E+01 MW-215 11/3/2021 pCi/L 6.4E+00 6.2E+00 1.4E+01 6.2E+00 1.1 E+01 5.0E+00 1.0E+01 1.3E+01 6.1E+00 6.4E+00 3.0E+01 1.2E+01 MW-217 11/3/2021 pCi/L 5.0E+00 5.BE+00 1.3E+01 6.5E+00 1.2E+01 6.5E+00 7.9E+00 1.4E+01 5.7E+00 5.0E+00 3.0E+01 1.2E+01 MW-219 11/3/2021 pCi/L 2.3E+00 2.5E+00 5.4E+00 2.2E+00 4.6E+00 2.4E+00 4.1E+00 4.5E+00 2.7E+00 2.3E+00 1.2E+01 3.9E+00 MW-229 11/3/2021 pCi/L 6.2E+00 7.6E+00 1.5E+01 4.2E+00 1.4E+01 7.1E+00 1.1 E+01 1.0E+01 6.BE+00 6.3E+00 2.9E+01 9.7E+00 MW-231 11/3/2021 pCi/L 5.0E+00 5.5E+00 8.7E+00 5.7E+00 1.1E+01 5.1E+00 9.4E+00 1.3E+01 4.2E+00 3.6E+00 3.1 E+01 1.2E+01 MW-233 11/3/2021 pCi/L 6.3E+00 7.0E+00 1.1 E+01 4.6E+00 1.0E+01 6.3E+00 1.0E+01 1.4E+01 6.6E+00 6.3E+00 2.BE+01 1.1 E+01

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Rev. 2021 I

Page 67 of 87 Annual Radioactive Effluent Release Report Page 23 of 36 Groundwater Monitoring Well Sampling Results Table 17, Gamma Isotopic Results Station Sample Unit ID Date s

MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 MW-235 11/3/2021 pCi/L 5.0E+00 5.5E+00 1.1E+01 5.3E+00 1.2E+01 5.7E+00 8.4E+00 1.4E+01 4.6E+00 5.0E+00 3.6E+01 1.1 E+01 PZ-03 11/3/2021 pCi/L 6.6E+00 7.6E+00 1.5E+01 7.7E+00 1.0E+01 7.4E+00 1.3E+01 1.2E+01 7.5E+00 7.7E+00 3.2E+01 1.4E+01 T-14 11/3/2021 pCi/L 7.7E+00 5.5E+00 1.1 E+01 4.6E+00 1.4E+01 6.9E+00 1.2E+01 1.2E+01 7.6E+00 4.9E+00 3.7E+01 1.5E+01 MW-111 11/4/2021 pCi/L 4.6E+00 4.8E+00 9.2E+00 3.7E+00 9.5E+00 4.7E+00 7.0E+00 1.2E+01 4.2E+00 4.5E+00 2.5E+01 7.4E+00 MW-120 11/4/2021 pCi/L 4.0E+00 3.0E+00 8.0E+00 4.5E+00 9.4E+00 4.2E+00 6.3E+00 9.7E+00 4.6E+00 4.4E+00 2.6E+01 1.1 E+01 MW-132 11/4/2021 pCi/L 7.7E+00 7.1E+00 1.8E+01 9.3E+00 1.5E+01 9.7E+00 1.4E+01 1.3E+01 7.3E+00 7.0E+00 4.0E+01 1.2E+01 MW-134 11/4/2021 pCi/L 6.1E+00 7.6E+00 1.4E+01 6.2E+00 1.2E+01 8.9E+00 1.1 E+01 1.3E+01 6.6E+00 7.0E+00 3.1 E+01 1.1 E+01 MW-169 11/4/2021 pCi/L 9.1E+00 6.5E+00 1.8E+01 5.0E+00 1.5E+01 9.5E+00 1.7E+01 1.4E+01 9.4E+00 9.8E+00 4.7E+01 1.3E+01 MW-223 11/4/2021 pCi/L 4.7E+00 5.6E+00 1.2E+01 5.8E+00 1.1 E+01 6.5E+00 9.5E+00 1.3E+01 5.7E+00 5.2E+00 3.8E+01 8.5E+00 MW-225 11/4/2021 pCi/L 5.2E+00 5.5E+00 1.2E+01 5.4E+00 9.6E+00 5.1E+00 9.9E+00 1.5E+01 6.6E+00 5.5E+00 2.9E+01 9.9E+00 SW-101 11/4/2021 pCi/L 7.5E+00 7.1E+00 1.6E+01 8.1E+00 1.6E+01 7.6E+00 1.1 E+01 1.3E+01 8.8E+00 7.8E+00 3.8E+01 1.2E+01 SW-103 11/4/2021 pCi/L 8.5E+00 7.2E+00 1.8E+01 3.8E+00 1.8E+01 8.8E+00 1.2E+01 1.3E+01 8.0E+00 6.4E+00 4.0E+01 9.3E+00

RBG-48149 I

Rev.2021 I

Page 68 of 87 Annual Radioactive Effluent Release Report Page 24 of 36 Groundwater Monitoring Well Sampling Results Table 17, Gamma Isotopic Results Station Sample Unit ID Date s

MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 SW-104 11/4/2021 pCi/L 6.5E+00 5.3E+00 1.3E+01 5.7E+00 1.6E+01 5.9E+00 1.3E+01 9.6E+00 7.7E+00 5.3E+00 3.2E+01 1.4E+01 Table 18, Hard to Detect Nuclides Station ID Sample Date Units FE-55 Nl-63 SR-89 SR-90 CM-242 CM-243/244 PU-238 MW-125 1/19/2021 pCi/L

< 1.1E+02

< 1.9E+01

< 8.0E+00

< 9.1E-01

< 2.1E-02

< 1.2E-01

< 3.7E-01

RBG-48149 I

Rev. 2021 I Page 69 of 87 Annual Radioactive Effluent Release Report Page 25 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-124 1/19/2021 pCi/L 7.20E+04 MW-158 1/19/2021 pCi/L 2.50E+05 MW-124 1/19/2021 pCi/L 8.B0E+04 MW-159 1/19/2021 pCi/L 5.30E+04 MW-125 1/19/2021 pCi/L 4.10E+05 MW-162 1/19/2021 pCi/L

< 5.2E+02 MW-142 1/19/2021 pCi/L

< 5.BE+02 MW-164 1/19/2021 pCi/L

< 5.1E+02 MW-144 1/19/2021 pCi/L

< 5.5E+02 MW-165 1/19/2021 pCi/L

< 5.0E+02 MW-146 1/19/2021 pCi/L 1.60E+05 MW-165 1/19/2021 pCi/L

< 5.0E+02 MW-147 1/19/2021 pCi/L 6.60E+04 MW-178 1/19/2021 pCi/L 1.40E+03 MW-148 1/19/2021 pCi/L

< 5.6E+02 MW-179 1/19/2021 pCi/L 1.50E+05 MW-151 1/19/2021 pCi/L

< 5.0E+02 MW-179 1/19/2021 pCi/L 1.60E+05 MW-155 1/19/2021 pCi/L 1.30E+05 MW-186 1/19/2021 pCi/L

< 5.1E+02 MW-156 1/19/2021 pCi/L 3.30E+03 MW-187 1/19/2021 pCi/L

< 5.1E+02 MW-157 1/19/2021 pCi/L 2.10E+05 MW-201 1/19/2021 pCi/L

< 5.0E+02

RBG-48149 I

Rev.2021 I Page 70 of 87 Annual Radioactive Effluent Release Report Page 26 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-211 1/19/2021 pCi/L

< 5.9E+02 MW-153 1/20/2021 pCi/L 8.10E+02 MW-211 1/19/2021 pCi/L 7.00E+02 MW-161 1/20/2021 pCi/L 2.70E+03 MW-100 1/20/2021 pCi/L

< 5.1E+02 MW-170 1/20/2021 pCi/L

< 5.2E+02 MW-110 1/20/2021 pCi/L 1.90E+04 MW-182 1/20/2021 pCi/L

< 5.1E+02 MW-112 1/20/2021 pCi/L 3.20E+03 MW-185 1/20/2021 pCi/L

< 5.0E+02 MW-114 1/20/2021 pCi/L 1.70E+03 MW-188 1/20/2021 pCi/L

< 5.0E+02 MW-116 1/20/2021 pCi/L 1.70E+04 MW-205 1/20/2021 pCi/L

< 5.2E+02 MW-118 1/20/2021 pCi/L 3.10E+03 MW-207 1/20/2021 pCi/L

< 5.0E+02 MW-126 1/20/2021 pCi/L 1.40E+04 MW-207 1/20/2021 pCi/L

< 5.3E+02 MW-137 1/20/2021 pCi/L 7.90E+03 MW-209 1/20/2021 pCi/L

< 5.0E+02 MW-139 1/20/2021 pCi/L

< 5.1E+02 MW-209 1/20/2021 pCi/L

< 5.1E+02 MW-141 1/20/2021 pCi/L 2.20E+03 MW-219 1/20/2021 pCi/L

< 5.1E+02

RBG-48149 I

Rev. 2021 I Page 71 of 87 Annual Radioactive Effluent Release Report Page 27 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-221 1/20/2021 pCi/L 9.50E+02 SW-104 1/20/2021 pCi/L

< 5.1E+02 MW-223 1/20/2021 pCi/L

< 5.0E+02 MW-124 5/11/2021 pCi/L 1.10E+05 MW-225 1/20/2021 pCi/L

< 5.1E+02 MW-125 5/11/2021 pCi/L 3.60E+05 MW-227 1/20/2021 pCi/L

< 5.2E+02 MW-142 5/11/2021 pCi/L 1.10E+03 MW-229 1/20/2021 pCi/L

< 5.1E+02 MW-142 5/11/2021 pCi/L 8.90E+02 MW-231 1/20/2021 pCi/L

< 5.1E+02 MW-144 5/11/2021 pCi/L

< 5.4E+02 MW-233 1/20/2021 pCi/L

< 5.1E+02 MW-146 5/11/2021 pCi/L 1.30E+05 MW-235 1/20/2021 pCi/L

< 5.2E+02 MW-147 5/11/2021 pCi/L 1.20E+05 PZ-01 1/20/2021 pCi/L 2.40E+04 MW-148 5/11/2021 pCi/L

< 6.0E+02 SW-101 1/20/2021 pCi/L

< 5.2E+02 MW-158 5/11/2021 pCi/L 1.90E+05 SW-102 1/20/2021 pCi/L

< 5.3E+02 MW-159 5/11/2021 pCi/L 6.70E+04 SW-103 1/20/2021 pCi/L

< 5.1E+02 MW-162 5/11/2021 pCi/L

< 5.6E+02

RBG-48149 I

Rev. 2021 I Page 72 of 87 Annual Radioactive Effluent Release Report Page 28 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-207 5/11/2021 pCi/L

< 5.0E+02 MW-126 5/12/2021 pCi/L 1.00E+04 MW-229 5/11/2021 pCi/L

< 5.1E+02 MW-128 5/12/2021 pCi/L

< 5.0E+02 MW-100 5/12/2021 pCi/L

< 5.0E+02 MW-137 5/12/2021 pCi/L 7.10E+03 MW-106 5/12/2021 pCi/L

< 5.0E+02 MW-139 5/12/2021 pCi/L

< 5.4E+02 MW-106 5/12/2021 pCi/L

< 5.6E+02 MW-141 5/12/2021 pCi/L 2.00E+03 MW-110 5/12/2021 pCi/L 2.10E+04 MW-151 5/12/2021 pCi/L

< 5.4E+02 MW-112 5/12/2021 pCi/L 3.20E+03 MW-153 5/12/2021 pCi/L 1.10E+03 MW-114 5/12/2021 pCi/L 2.10E+03 MW-155 5/12/2021 pCi/L 1.80E+05 MW-116 5/12/2021 pCi/L 4.60E+03 MW-156 5/12/2021 pCi/L 3.70E+03 MW-118 5/12/2021 pCi/L 3.30E+03 MW-157 5/12/2021 pCi/L 2.50E+05 MW-120 5/12/2021 pCi/L

< 5.0E+02 MW-161 5/12/2021 pCi/L 2.60E+03 MW-122R 5/12/2021 pCi/L

< 5.7E+02 MW-164 5/12/2021 pCi/L

< 5.7E+02

RBG-48149 I

Rev. 2021 I Page 73 of 87 Annual Radioactive Effluent Release Report Page 29 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-164 5/12/2021 pCi/L

< 5.9E+02 MW-211 5/12/2021 pCi/L 6.70E+02 MW-165 5/12/2021 pCi/L

< 5.8E+02 MW-213 5/12/2021 pCi/L

< 6.0E+02 MW-170 5/12/2021 pCi/L

< 6.4E+02 MW-219 5/12/2021 pCi/L

< 5.9E+02 MW-178 5/12/2021 pCi/L 1.60E+03 MW-221 5/12/2021 pCi/L 8.90E+02 MW-179 5/12/2021 pCi/L 1.60E+05 MW-223 5/12/2021 pCi/L

< 5.0E+02 MW-180 5/12/2021 pCi/L

< 6.1E+02 MW-231 5/12/2021 pCi/L

< 5.8E+02 MW-185 5/12/2021 pCi/L

< 5.8E+02 MW-235 5/12/2021 pCi/L

< 5.6E+02 MW-186 5/12/2021 pCi/L

< 5.8E+02 MW-235 5/12/2021 pCi/L

< 5.7E+02 MW-187 5/12/2021 pCi/L

< 4.9E+02 PZ-01 5/12/2021 pCi/L 2.10E+04 MW-201 5/12/2021 pCi/L

< 5.9E+02 PZ-01 5/12/2021 pCi/L 2.10E+04 MW-203 5/12/2021 pCi/L

< 5.0E+02 PZ-03 5/12/2021 pCi/L

< 6.0E+02 MW-211 5/12/2021 pCi/L

< 5.8E+02 MW-130 5/13/2021 pCi/L

< 5.9E+02

RBG-48149 I

Rev. 2021 I

Page 74 of 87 Annual Radioactive Effluent Release Report Page 30 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-131 5/13/2021 pCi/L

< 5.1E+02 MW-227 5/13/2021 pCi/L

< 5.5E+02 MW-132 5/13/2021 pCi/L

< 5.6E+02 MW-233 5/13/2021 pCi/L

< 5.6E+02 MW-134 5/13/2021 pCi/L

< 5.2E+02 SW-101 5/13/2021 pCi/L

< 5.5E+02 MW-134 5/13/2021 pCi/L

< 5.0E+02 SW-102 5/13/2021 pCi/L

< 5.6E+02 MW-167 5/13/2021 pCi/L

< 5.0E+02 SW-103 5/13/2021 pCi/L

< 5.6E+02 MW-169 5/13/2021 pCi/L

< 5.6E+02 SW-104 5/13/2021 pCi/L

< 6.1E+02 MW-182 5/13/2021 pCi/L

< 5.2E+02 MW-188 6/22/2021 pCi/L

< 4.7E+02 MW-205 5/13/2021 pCi/L

< 5.5E+02 MW-100 8/17/2021 pCi/L

< 5.2E+02 MW-209 5/13/2021 pCi/L

< 5.1E+02 MW-124 8/17/2021 pCi/L 1.30E+05 MW-215 5/13/2021 pCi/L

< 5.6E+02 MW-125 8/17/2021 pCi/L 4.40E+05 MW-217 5/13/2021 pCi/L

< 5.8E+02 MW-126 8/17/2021 pCi/L 1.40E+04 MW-225 5/13/2021 pCi/L

< 5.6E+02 MW-142 8/17/2021 pCi/L 9.50E+02

RBG-48149 I

Rev.2021 I Page 75 of 87 Annual Radioactive Effluent Release Report Page 31 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-142 8/17/2021 pCi/L 7.40E+02 MW-164 8/17/2021 pCi/L

< 5.0E+02 MW-144 8/17/2021 pCi/L

< 5.1E+02 MW-165 8/17/2021 pCi/L

< 5.2E+02 MW-146 8/17/2021 pCi/L 9.70E+04 MW-178 8/17/2021 pCi/L 6.80E+03 MW-147 8/17/2021 pCi/L 3.70E+04 MW-179 8/17/2021 pCi/L 1.00E+05 MW-148 8/17/2021 pCi/L

< 5.2E+02 MW-185 8/17/2021 pCi/L

< 5.2E+02 MW-151 8/17/2021 pCi/L

< 5.3E+02 MW-186 8/17/2021 pCi/L

< 4.8E+02 MW0155 8/17/2021 pCi/L 1.30E+05 MW-187 8/17/2021 pCi/L

< 5.3E+02 MW-156 8/17/2021 pCi/L 4.30E+03 MW-187 8/17/2021 pCi/L

< 5.1E+02 MW-157 8/17/2021 pCi/L 2.30E+05 MW-188 8/17/2021 pCi/L

< 5.2E+02 MW-158 8/17/2021 pCi/L 2.00E+05 MW-211 8/17/2021 pCi/L

,< 5.4E+02 MW-159 8/17/2021 pCi/L 6.40E+04 MW-211 8/17/2021 pCi/L 6.80E+02 I

MW-162 8/17/2021 pCi/L

< 5.3E+02 MW-110 8/18/2021 pCi/L 2.80E+04

RBG-48149 I

Rev. 2021 I Page 76 of 87 Annual Radioactive Effluent Release Report Page 32 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-112 8/18/2021 pCi/L 2.20E+03 MW-209 8/18/2021 pCi/L

< 5.2E+02 MW-114 8/18/2021 pCi/L 1.90E+03 MW-221 8/18/2021 pCi/L 1.40E+03 MW-116 8/18/2021 pCi/L 3.70E+03 MW-221 8/18/2021 pCi/L 1.20E+03 MW-118 8/18/2021 pCi/L 3.10E+03 MW-223 8/18/2021 pCi/L

< 4.9E+02 MW-137 8/18/2021 pCi/L 1.10E+04 PZ-01 8/18/2021 pCi/L 2.30E+04 MW-139 8/18/2021 pCi/L 7.70E+02 SW-101 8/18/2021 pCi/L

< 5.2E+02 MW-141 8/18/2021 pCi/l 2.20E+03 SW-102 8/18/2021 pCi/L

< 5.0E+02 MW-153 8/18/2021 pCi/l 1.60E+03 SW-103 8/18/2021 pCi/L

< 5.1E+02 MW-161 8/18/2021 pCi/L 2.90E+03 SW-104 8/18/2021 pCi/L

< 5.2E+02 MW-170 8/18/2021 pCi/L

< 4.9E+02 MW-110 11/2/2021 pCi/L 2.90E+04 MW-182 8/18/2021 pCi/L

< 5.0E+02 MW-112 11/2/2021 pCi/L 2.70E+03 MW-209 8/18/2021 pCi/L

< 5.1E+02 MW-112 11/2/2021 pCi/L 2.90E+03

RBG-48149 I

Rev.2021 I Page 77 of 87 Annual Radioactive Effluent Release Report Page 33 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-114 11/2/2021 pCi/L 2.40E+03 MW-148 11/2/2021 pCi/L

< 5.9E+02 MW-116 11/2/2021 pCi/L 6.80E+03 MW-155 11/2/2021 pCi/L 1.10E+05 MW-118 11/2/2021 pCi/L 3.00E+03 MW-156 11/2/2021 pCi/L 7.00E+03 MW-124 11/2/2021 pCi/L 1.60E+05 MW-158 11/2/2021 pCi/L 2.70E+05 MW-125 11/2/2021 pCi/L 4.20E+05 MW-159 11/2/2021 pCi/L 4.30E+04 MW-137 11/2/2021 pCi/L 9.80E+03 MW-162 11/2/2021 pCi/L

< 5.3E+02 MW-139 11/2/2021 pCi/L 9.20E+02 MW-172 11/2/2021 pCi/L

< 5.5E+02 MW-141 11/2/2021 pCi/L 1.60E+03 MW-174 11/2/2021 pCi/L

< 5.7E+02 MW-142 11/2/2021 pCi/L

< 4.9E+02 MW-185 11/2/2021 pCi/L

< 5.3E+02 MW-144 11/2/2021 pCi/L 1.40E+03 MW-188 11/2/2021 pCi/L

< 5.6E+02 MW-146 11/2/2021 pCi/L 1.90E+05 MW-205 11/2/2021 pCi/L

< 5.9E+02 MW-147 11/2/2021 pCi/L 5.40E+04 MW-205 11/2/2021 pCi/L

< 5.3E+02

RBG-48149 I

Rev. 2021 I Page 78 of 87 Annual Radioactive Effluent Release Report Page 34 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-221 11/2/2021 pCi/L 1.30E+03 MW-107 11/3/2021 pCi/L

< 5.3E+02 MW-221 11/2/2021 pCi/L 1.40E+03 MW-108 11/3/2021 pCi/L

< 5.2E+02 MW-227 11/2/2021 pCi/L

< 5.8E+02 MW-122R 11/3/2021 pCi/L

< 5.4E+02 PZ-01 11/2/2021 pCi/L 1.60E+04 MW-126 11/3/2021 pCi/L 1.50E+04 MW-04 11/3/2021 pCi/L

< 5.6E+02 MW-128 11/3/2021 pCi/L

< 5.1E+02 MW-05 11/3/2021 pCi/L

< 5.5E+02 MW-130 11/3/2021 pCi/L

< 5.4E+02 MW-08 11/3/2021 pCi/L

< 5.0E+02 MW-131 11/3/2021 pCi/L

< 5.7E+02 MW-100 11/3/2021 pCi/L

< 5.1E+02 MW-14 11/3/2021 pCi/L

< 5.3E+02 MW-103 11/3/2021 pCi/L

< 5.6E+02 MW-151 11/3/2021 pCi/L

< 5.6E+02 MW-104 11/3/2021 pCi/L

< 4.8E+02 MW-153 11/3/2021 pCi/L 1.60E+03 MW-106 11/3/2021 pCi/L

< 5.8E+02 MW-157 11/3/2021 pCi/L 2.50E+05 MW-106 11/3/2021 pCi/L

< 5.5E+02 MW-161 11/3/2021 pCi/L 2.60E+03

RBG-48149 I

Rev. 2021 I Page 79 of 87 Annual Radioactive Effluent Release Report Page 35 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-164 11/3/2021 pCi/L

< 5.4E+02 MW-201 11/3/2021 pCi/L

< 5.6E+02 MW-165 11/3/2021 pCi/L

< 5.0E+02 MW-207 11/3/2021 pCi/L

< 5.5E+02 MW-167 11/3/2021 pCi/L

< 5.2E+02 MW-209 11/3/2021 pCi/L

< 4.7E+02 MW-170 11/3/2021 pCi/L

< 5.1E+02 MW-209 11/3/2021 pCi/L

< 5.6E+02 MW-178 11/3/2021 pCi/L 6.90E+03 MW-211 11/3/2021 pCi/L 9.50E+02 MW-178 11/3/2021 pCi/L 8.30E+03 MW-211 11/3/2021 pCi/L 1.10E+03 MW-179 11/3/2021 pCi/L 1.20E+05 MW-213 11/3/2021 pCi/L

< 5.4E+02 MW-18 11/3/2021 pCi/L

< 5.0E+02 MW-215 11/3/2021 pCi/L

< 6.0E+02 MW-180 11/3/2021 pCi/L

< 4.7E+02 MW-217 11/3/2021 pCi/L

< 6.2E+02 MW-182 11/3/2021 pCi/L

< 5.9E+02 MW-219 11/3/2021 pCi/L

< 5.0E+02 MW-186 11/3/2021 pCi/L

< 5.4E+02 MW-229 11/3/2021 pCi/L

< 4.BE+02 MW-187 11/3/2021 pCi/L

< 5.4E+02 MW-231 11/3/2021 pCi/L

< 6.3E+02

RBG-48149 I

Rev. 2021 I Page 80 of 87 Annual Radioactive Effluent Release Report Page 36 of 36 Groundwater Monitoring Well Sampling Results Table 19, Tritium Analysis Results Station ID Start Date Units H-3 Station ID Start Date Units H-3 MW-233 11/3/2021 pCi/L

< 5.7E+02 MW-169 11/4/2021 pCi/L

< 5.4E+02 MW-235 11/3/2021 pCi/L

< 5.0E+02 MW-223 11/4/2021 pCi/L

< 5.3E+02 PZ-03 11/3/2021 pCi/L

< 4.8E+02 MW-225 11/4/2021 pCi/L

< 5.0E+02 T-14 11/3/2021 pCi/L

< 5.3E+02 SW-101 11/4/2021 pCi/L

< 5.1E+02 MW-111 11/4/2021 pCi/L

< 5.4E+02 SW-102 11/4/2021 pCi/L

< 5.7E+02 MW-120 11/4/2021 pCi/L

< 5.6E+02 SW-103 11/4/2021 pCi/L

< 6.1E+02 MW-132 11/4/2021 pCi/L

< 5.4E+02 SW-104 11/4/2021 pCi/L

< 5.8E+02 MW-134 11/4/2021 pCi/L

< 4.8E+02

RBG-48149 I

Rev.2021 I Page 81

of 87 Annual Radioactive Effluent Release Report Page 1 of 1.

2018ARERR ERRATA

.GASEOUS EFFLUENTS Gas E.ffluent and W~ste Disposal Report

Jab,ft3*1, Gaseous Etflut3pts-Sum111ation of/,(:11 Relea,~s

1.

Total Release

2.

Average re.lease *rateforlhe.period

1.

2.

. j\\:\\iefage telease.rateJor the period C.

Particulates

1.

. Parficulafos with.half-lhtes > 8 clays D.

Tritium

1.

2.

E.

Gro.s;s Alpfla

1.

Total Refe1:1se

2.

1.

Totat Refease

2.

Average release rate for.the period Unit

.Ci Ci

Quarter 1

Quarter

.Quarter 2

3 Quartet 4

Annual 4.12E-04 4.62E~04 * * '6.28E-04 6.98E~04

2,20Es03

µCi/sec 5.30E-05 5:87Es05 i90E-Q5 8.78E-05

.6:97E005 Ci 2,93E+OO

t,858+00 8.34E+OO 3:04E+OO 1.~2E+01 O)JOE+OO O:QOE+OO O,OQE+OO O.OOE+OO 0:QQl;:+00 Ci 2.71E+QO 2.74E+,00 2.TlEtOO 2.TJ'E+QQ; 1.1E+01

- RBG~48149 I

Rev.2021

- I Page 82of87 Annual Radioactive Effluent Release Reoort Page 1 of 3.

2019 ARERR ERRATA. *

a.~*

'Gas Effloerltand;Wa~te D1spo~id:Repo1t J,a~J~ t~:~S~tlS Effl1:19,.~ts~S~n;t(Yl!~lic,'.)~ of ~It ~eie~~~

.Uoit TotaJ;Release.

C

. Particulates

1.

o.

Tritium

Tot~t ~elease

2.

.E.

G:J:QS,S Afp~~

Total Rerea*se

2.

% of lintit'f;: focatea: irnlne Raqi9logfca~ lrnpadfo ~n Table

-~

RBG-48149 I

Rev.2021 l Page 83 of 87 Annual Radioactive Effluent Release Reoort -

Page 2 of 3 2019 ARERR ERRATA LIQUID EFFLUENTS 4; 1 Ug~itl'Effluent and Waste.Disposal Report A.

2

1.

2.

Table 5; liquid Etnue!1ts-Summation of ~H Releases Tqtaf H13le1;1se<{110~-iucludirig*tritium,

gases 9r alpha)

Averl:ige dilutedconce.ntratiotr during PE!riod Meri:lge-cliluted. co.ncentra_liotl during

~eriod, Ci JiCifrnl Quarter 1

.Quarter Quarter 2

3 Citiarter -

Arih:t:1al 4

1.57E+01 1'26E+01 5,67E+01 C.

Dissolved & Entrained Gases

1.

TotaLRe!ease 1..02E4J1 2.28E~02 8.. 74E002 _ 5,68E*02

2.

-1YE!rnge dijUtJ3d concentration during pe'riod -

T51B08 2.(}1&Ci8 - 6A3E-08 4.11E/-08 D.

.Gross Alpha Activity

1.

Ci

.!lcOE+0O OJJOE+0(l E.

Volume Of Vllas!e Released {pr!br Lifers 2.17E+06 4.94E.+06 5Jl(jE+06 3.~91="

rnsE+07 todiluti9n}

F.

\\fo!Uir\\J:! ()f QilutionWater Usedbur1hg liters t.36E+09 1.13E+09 1.36E+09 138E+09 523E+09 Period

.o/(1 of llmit,is lqcated inthe Radki[ogical Impact to Man Table

RBG-48149 2019 ARERR ERRATA 40CFR'Part 190 Evati.iatioli for ali lndividc.iaf ih the Unrestricted Area

Ah assessment (see Table.14)\\A.las made ofr~tllati,011.d~sesf o.*theJikety*m~t-

.. exposed membef.Of thepublic from River Bend and othetnearby!uranllimfi.lel cycle SQUfGtlS tnq.. Wilpiq fjye:tyi(ltis). JtJ~ar;iq!-),a!(caJ~nqa{; Ytl..ar)dO.Stl.0.f gC>st;.....*.. *****..

tomITl~IJienI.... *.

.. ER OF THI= PUB!-IG, due to releases of rc10,ioamivity ancl toradiationJrom *...... **. fuel cycle so1.1rces, ~hall be limited tq less manorequauo 25 mr:ern to theJqtal t>od:y or ar1y qrgan, exc:ept the tl"lyroid, Whicft shall be f.imited tq less.than or equal to 15 mrem.

Tabfe 14, EPA 40 CFR PART 190 Evali:ration Thyroict Page 3 of 3. *

DoseUmit 25mrem 75mrem 2smren1 1.11E+OO

% o.{J.. irnit 1A8E+OO 1.27E.+OO Dose(lhcluding C-14) 1.25:E+OO 2;05E+OO 5.01E+OO 5,02E+OO

'2.13E+OO Gaseoµs cfose inGMlir19. a boµnding c;a!cul~tiOi)Of C-t4 dose, clirecfstiin~, i~FS(apd any otner nuclear

power retated facility withrn 5 miles of the station are considere'dwhei'icalculating dose Mmpliafice With

.40FR 190,

RBG-48149 I

Rev.2021 I Page 85of87 Annual Radioactive Effluent Release Report

Attachment 4 Page 1 of 3

3:1:)

3.1 2020 ARERR ERRATA GASEOUS EFFLUENTS Gas Effluent and Waste Disposal Report Taijle 1., Gasequs Effluel'lts~surnm~tion of !%11 Releas~

.. Unit Quarter Quarte.r Quarter Quarter 1

2 3

4 Annual Total Release Cl 4.60E+01 2.12E+011 1167E+02:

4;.40E+03~

4.63E+()3*

2.

Average release rate. for;the period

µCi/sec 5J35E+OO 2.70E+OO 2:11E+01 5:53E+02 1.46Etc02 as ml.ease d\\.le i.o minor fuel elementleaks. No TRMJimits Were exceeded

1.

2.

c.

Particulates With half,lives >.a. day,s 1.57E-03 2.85E-04 5, HJE-04 4.24:E,04 2.80E,03

2.

Avera~ rele~se rate for the period D.

Tritium

1.

Total.Release Cf

. 4,12E+OO 2:32E+OO 4.03E+OO 6183E+OO 1,73E+01

2.

Average ttelease rafo fodhe period

µCi/sec 5.24E-01 2.95E4J1 5,07E-01 8.60Ec01 E.

Gross AJpha

1.

Ci O.OOE+OO

()_()()E+OO O.OOE+()()

o,doE+.00 O.OOE+OO * *

Averagerele'.3se rate fpr the period pCi/sec O.OOE+OO O.OOE+OO O.OOE+OO 0:00Ef00 O;OOE+OO

Total Reieas.e 2.71E+OO 2.74E+OO 2.77E+OO 2.77E+OO gCi/Sec 3,49E-01 3A8E-01.

3.4$E-01 SABE-01

% ot fimlt* is rotated in the RacHo!ogicar Jmpactto Man Table

RBG-48149 I

Rev.2021 Annual Radioactive Effluent Release Reoort 2020 ARERR ERRATA UQUle EFFLUENTS 4~ t. ligd~d<emuenland~s~e.Ji)iSJ,lOS~i, Report.

'Fal;,te 5; L,qµi~:Efflu~~ts-SuQlmatio~*~*~ll:~ei~s,~s

%~~~!?}~~~~Jqpfim;J~,i'ng tri,iu@;.

.. Ci..

gases ()I" a!ph'a, Aver~e.clli~edci:inceofietiQp cttlcing peJig,g Avera,ge.tiilut~ ~erittati perl!>it,

(;.

E>Ji;,s~cl $ l;p~ill~~ Gil$.~

E.

F-Cl Average tlilut'ea'concenwatibn *during*

,.,c*,.. ".. m.*L.

4;05E--08.*

period,

,.. ~--.

Total Release

. y~ of W'aste,Released,(prior

to dDutiorv)

I Page 86of87 Page 2 of 3 I

I

RBG-48149 I

Rev.2021 I Page 87 of 87 Annual Radioactive Effluent Release Report Page 3 of 3 2020 ARERR ERRATA Page 28 of81 6.3 40CFR 'Part 190 Evaluation' for an Individual in the Unrestricted Area An assessment (see Table 14 )Was made of radiation doses td :tne,:likely most-exposed membe'ror the public from River Bend and other nearby;uranlt.1rr1fael cycle

$OLlrG~§ \\n()n~withi11. fiy~ rriiJes').J~E:l: ai;1n4~1 (cal~ndaryEl~r) dos~ Pf 9ose. *... *.**..

commitJTfentJp any. MEMBER OF THE PUBUC, dUe, to releases of racUoactivity and t0'xadiafion from uranit1m fuel cycle sdurces, $hall be limited t9 less than.or equal to 25 mrem to the 1otal body or ariy organ, exceptthe thyroid, Whfch sha.11 be ~mited to -

less th<:!n or equal to 75 mrem.

Table 14, EPA 40 CFRPART 190 Evaluation Toti:tl Body Thyroiq Any Other Organ DoseUmit 25mrem 75mrem 25mrem.

Dose{Exclui:fing (>14) 1.92'1=+00 2.r2E+OO 1.931::+00 O/c.1oftimif 7.69E+OO 3,63E+OO 7.72E+OO Dose(lncluding C-14) 2.86E+OO 3.66E+OO 6!63E+OO

%of Limit 1.i4E+01 4.88E+OO 2.o5E+Ot Gaseous dose iqcludlng a botJndlng calcuiqtion of C-14 dose, dir'ect;~~ine, !SF$! <ifid any otner nuclear

power.related facility within 5 miles of the statidn are considered when calculating dose compliance with 40C:;FR190.

.

RBG-48149, 2021 Annual Radioactive Effluent Release Report

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RBG-48149, 2021 Annual Radioactive Effluent Release Report

Text

Subject:

Enclosure:

1.0 INTRODUCTION

SUMMARY

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2.3 Plant

SUMMARY

7.2 Plant

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