Text

Submittal of 2017 Radioactive Effluent Release Report
	ML18150A334
Person / Time
Site:	Vermont Yankee
Issue date:	05/09/2018
From:	Chappell C, Pelczar J; Entergy Nuclear Operations
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML18150A321	List: BVY 18-020, Submittal of 2017 Radioactive Effluent Release Report;
References
	BVY 18-020
	Download: ML18150A334 (61)
	v • d • e

Entergy Nuclear Operations, Inc.

Vermont Yankee 320 Governor Hunt Rd.

Vernon, VT 05354 802-257-7711 Coley C. Chappell Manager, Design and Programs Engineering BVYiS-020 May 9, 2018 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

SUBJECT:

2017 Radioactive Effluent Release Report Vermont Yankee Nuclear Power Station License No. DPR-28 Docket No. 50-271

Dear Sir or Madam:

In accordance with Vermont Yankee (VY) Technical Specifications (TS) 6.6.D, enclosed is a copy of the annual 2017 Radioactive Effluent Release Report (RERR).

In addition, VY TS 6.7.B requires reporting of changes to the Off-Site Dose Calculation Manual (ODCM). Appendix Hof the RERR provides a summary of two revisions to the ODCM involving the changes which occurred during 2017. Attachment 1 to Appendix H provides a copy of the affected pages from Revision 38 and 39.

The submittal of this report also satisfies the requirements of the VY Renewed Facility Operating License Condition 3.E.10.

This letter contains no new regulatory commitments.

Should you have any questions concerning this letter, please contact me at (802) 451-3374.

Sincerely, z.q.~~~>&£J~3~1::=.==_/;'"" CCC CCC/tbs

Enclosure:

Radioactive Effluent Release Report for 2017

BVY ; 8-020 / Page 2 of 2 cc: Regional Administrator, Region 1 U.S. Nuclear Regulatory Commission 2100 Renaissance Blvd, Suite 100 King of Prussia, PA 19406-2713 Mr. Jack D. Parrott, Senior Project Manager Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Mail Stop T-5A 10 Washington, DC 20555 Ms. June Tierney, Commissioner Vermont Department of Public Service 112 State Street - Drawer 20 Montpelier, Vermont 05602-2601 Vermont Department of Health Division of Radiological Health Attn: Bill Irwin P.O. Box 70 Burlington, VT 05402-0070 Massachusetts Department of Public Health Director, Radiation Control Program 529 Main Street, Suite 1 M2A Charlestown, MA 02129 Department of Health and Human Services Administrator, Radiological Health Section 29 Hazen Drive Concord, NH 03301-6504 Director of Nuclear Preparedness Massachusetts Emergency Management Agency 400 Worcester Road Framingham, MA 01702-5399 Radiation Program Manager, Health and Safety Coordinator EPA, New England, Region 1 5 Post Office Square, Suite 100 (OSRR02-2)

Boston, MA 02109

RADIOACTIVE EFFLUENT RELEASE REPORT FOR2017 INCLUDING ANNUAL RADIOLOGICAL IMPACT ON MAN Entergy Nuclear Vermont Yankee, LLC Docket No. 50-271 License No. DPR-28 Prepared by:~../:----P~LLL.!!_L_l__--J-L-AA.,...G,~;d.Ll~----_____!/ 5 / 7 /;?

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TABLE OF CONTENTS

1.0 INTRODUCTION

.............................................................................................................................................. 1 2.0 METEOROLOGICAL DATA ............................................................................................................................ 2 3.0 DOSE ASSESSMENT ....................................................................................................................................... 3 3.1 DOSES FROM LIQUID EFFLUENTS ................................................................................................................... 3 3 .2 DOSES FROM NOBLE GASES ........................................................................................................................... 4 3 .3 DOSE FROM RADIONUCLIDES IN PARTICULATE FORM AND TRITIUM ............................................................ 4 3.4 WHOLE BODY DOSES IN UNRESTRICTED AREAS FROM DIRECT RADIATION ................................................. 5 3.5 DOSES FROM ON-SITE DISPOSAL OF SEPTIC WASTE, COOLING TOWER SILT AND SOIL ............................... 5 3.6 ON-SITE RECREATIONAL ACTIVITIES ............................................................................................................. 6 REFERENCES .......................................................................................................................................................... 6 APPENDIX A-SUPPLEMENTAL INFORMATION ......................................................................................... A-1 APPENDIX B -LIQUID HOLDUP TANKS ........................................................................................................ B-1 APPENDIX C -RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION ............................................................................................................... C-1 APPENDIX D -RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION ................................................................................................................ D-1 APPENDIX E - RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ..................................... E-1 APPENDIX F -LAND USE CENSUS .................................................................................................................. F-1 APPENDIX G-PROCESS CONTROL PROGRAM ............................................................................................ G-1 APPENDIX H -OFF-SITE DOSE CALCULATION MANUAL ......................................................................... H-1 APPENDIX I - RADIOACTIVE LIQUID, GASEOUS AND SOLID WASTE TREATMENT SYSTEMS ........................................................................................................... .1-1 APPENDIX J - ON-SITE DISPOSAL OF SEPTIC/SILT/SOIL WASTE ............................................................ J-1 11

LIST OF TABLES IA Gaseous Effluents - Summation of All Releases ............................................................................. 7 1B Gaseous Effluents - Elevated Releases ............................................................................................ 9 IC Gaseous Effluents - Ground Level Releases .................................................................................. 11 ID Gaseous Effluents - Non-routine Releases .................................................................................... 13 2A Liquid Effluents - Summation of All Releases .............................................................................. 14 2B Liquid Effluents - Routine Releases ............................................................................................. 16 3 Solid Waste and Irradiated Fuel Shipments ................................................................................... 18 4A Maximum Quarterly and Annual Off-Site Doses from Direct Radiation and Liquid and Gaseous Effluents for 2017 (10CFR50, Appendix I) .................................................................... 20 4B Maximum Annual Off-Site Doses from Direct Radiation and Liquid and Gaseous Effluents for 2017 (40CFR190) .................................................................................................................... 21 4C Receptor Locations ........................................................................................................................ 22 4D Usage Factors for Environmental Pathways ................................................................................. 23 4E Environmental Parameters for Gaseous Effluents ........................................................................ 24 4F Environmental Parameters for Liquid Releases (Tritium) Via Groundwater ................................ 26 5A to 5H Annual (2017) Summary of Lower Level Joint Frequency Distribution .................................. 27-34 6A to 6H Annual (2017) Summary of Upper Level Joint Frequency Distribution .................................. 35-42 111

Radiological Effluent Release Report for 2017

[Including Annual Radiological Impact on Man]

Entergy Nuclear Vermont Yankee, LLC

1.0 INTRODUCTION

Tables 1 through 3 list the recorded radioactive liquid and gaseous effluents and solid waste shipments for the year, with data summarized on a quarterly basis for both liquids and gases. Table 4A summarizes the estimated radiological dose commitments from all radioactive liquid and gaseous effluents released during the year 2017 in response to the ALARA objectives of 10 CFR Part 50, Appendix I. Also included in Table 4A is the estimate of direct dose from fixed station sources along the limiting west site boundary line. Tables 5A through 6H report the cumulative joint frequency distributions of wind speed, wind direction, and atmospheric stability for the 12-month period, January to December 2017. Radioactive effluents reported in Tables 1 and 2 were used to determine the dose to the maximum exposed individual member of the public for 2017.

Dose commitments resulting from the release of radioactive materials in liquids and gases during the reporting period were estimated in accordance with the plant's Off-Site Dose Calculation Manual (ODCM), Section IO.I (Reference 1). These dose estimates were made using a "Method 11" analysis as described in the ODCM, and as reported in Tables 4A and 4B of this report. A "Method II" analysis incorporates the methodology of Regulatory Guide 1.109 (Reference 2) and actual measured meteorological data recorded concurrently with the quarterly reporting period.

As required by ODCM Section 10.1, this report shall also include an assessment of the radiation doses from radioactive effluents to member(s) of the public due to allowed recreational activities inside the site boundary during the year. As discussed in Section 3.6, there were no such recreational activities permitted and, therefore, there is no associated dose assessment.

An assessment of radiation doses (including direct radiation) to the likely most exposed real member(s) of the public for the calendar year for the purposes of demonstrating conformance with 40 CFR Part 190, "Environmental Radiation Protection Standards for Nuclear Power Operations," is also required to be included in this report if the conditions indicated in ODCM 3/4.4, "Total Dose," have been exceeded during the year. Since the conditions indicated in the action statement under ODCM 3/4.4 were not entered into during the year, no additional radiation dose assessment is required.

However, Table 4B does provide the combination of off-site doses and dose commitments from plant effluents and direct radiation sources for the limiting member of the public as a demonstration of compliance with the dose standards of 40 CFR Part 190.

All calculated dose estimates for members of the public at the site boundary or beyond for the 2017 annual reporting period are below the dose criteria of 10 CFR Part 50, Appendix I, and 40 CFR Part 190.

Appendices B through H indicate the status of reportable items per the requirements of ODCM Section 10.1.

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2.0 METEOROLOGICAL DATA Meteorological data were collected in 2017 from the site's 300-foot meteorological tower located approximately 2,200 feet northwest of the reactor building, and about 1,400 feet from the plant stack. The 300-foot tower is approximately the same height as the primary plant stack (308 feet) and is designed to meet the requirements of Safety Guide 23 (Reference 3) for meteorological monitoring. In mid-2009, the tower was moved to a location approximately 200 feet northwest of the original location.

x/Q and D/Q values for elevated releases were derived for all receptor points from the site meteorological record for each quarter using a straight-line airflow model. All dispersion factors have been calculated employing appropriate source configuration considerations, as described in Regulatory Guide 1.111 (Reference 4). A source depletion model as described in "Meteorology and Atomic Energy - 1968" (Reference 5) was used to generate deposition factors, assuming a constant deposition velocity of 0.01 m/sec for all stack (elevated) releases. Changes in terrain elevations in the site environment were also factored into the meteorological models as appropriate.

For any batch or discrete gas volume releases, the meteorological conditions concurrent with the time of release of radioactive materials in gaseous effluents shall be used in determining the gaseous pathway doses. For 2017 there were no reported discrete or batch gas releases.

In the event of a ground-level release, xJQ and D/Q values would be derived for the site boundary receptor points from the site meteorological record for each quarter using a straight-line airflow model.

During this reporting period; there were no ground-level releases and therefore no associated dose impact.

Table 4C lists the distances from the plant stack to the nearest site boundary, resident, and milk animal in each of the 16 principle compass directions as determined during the 2017 land use census. These locations were used in the calculation of atmospheric dispersion factors. The meteorological model was also executed for each calendar quarter to determine the location of the predicted maximum ground level air concentration from elevated releases from the plant's primary vent stack. These locations were included in the assessment of effluent doses along with identified points of interest from the annual land use census.

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3.0 DOSE ASSESSMENT 3 .1 Doses From Liquid Effluents ODCM 3/4.2.2 limits total body doses (1.5 mrem per quarter, and 3 mrem per year) and organ doses (5 mrem per quarter, and 10 mrem per year) from liquid effluents to a member of the public to those specified in 10 CFR Part 50, Appendix I. By implementing the requirements of 10 CFR Part 50, Appendix I, ODCM 3/4.2.2 assures that the release of radioactive material in liquid effluents will be kept "as low as is reasonably achievable."

There were no recorded routine liquid radioactive waste discharges during the report period.

However, an abnormal release to the Connecticut River is postulated due to a past leak in an underground pipe tunnel that runs between the Advanced Offgas (AOG) system building and other plant buildings which allowed accumulated piping system leakage to enter the subsurface groundwater adjacent to the plant structures. The existence of the leak was first recognized in January 2010, when a river shoreline Protected Area Boundary monitoring well sample was reported to have detectable tritium. The addition of other monitoring wells and subsequent analysis defined the extent of the affected groundwater plume moving toward the river and helped locate the source of the leak, which was stopped in February 2010.

Estimates of tritium-contaminated ground water released from the site are based on Protected Area Boundary monitoring well data collected throughout 2017, and hydrological modeling of ground water movement in the affected zone impacted by the pipe tunnel leak. Using a conservative estimate of groundwater flow through the affected area toward the river on a quarterly basis, an estimate of the total potential tritium released from the site during each quarter of2017 was generated and reported in Table 2A For the projected ground water flow into the Connecticut River in 2017, the dose impact to the maximum exposed individual (MEI) assumed the following exposure pathways: (1) ingestion offish (taken from Vernon Pond), (2) ingestion of vegetables and fresh leafy produce irrigated by water taken from the river below Vernon Dam, (3) ingestion of milk and meat from animals that were fed irrigated crops and drinking water taken from the river below Vernon Dam, and (4) potable water for a hypothetical individual drawing drinking water fed by the river below Vernon Dam. For Vernon Pond (river area adjacent to the plant property), the near shore mixing zone associated with the fish ingestion pathway is conservatively taken as 1% of the minimum recorded monthly river flow (3,421 cfs in September 2017) for dilution. All irrigation exposure pathways for the consumption of food products grown with irrigated water occur below Vernon Dam and assume the lowest 201 7 quarterly average growing season river flow value (6,265 cfs in the third quarter) for environmental mixing. For the drinking water pathway, river flow mixing is assumed to occur below Vernon Dam and uses the lowest annual quarterly average river flow (6,265 cfs in the third quarter) as a conservative estimate of river dilution for all four quarters of the year. The dose models are taken from Regulatory Guide 1.109 (Reference 2) and use environmental parameters for expo'sure pathways listed in Tables 4D and 4F.

The maximum estimated quarterly and annual whole body and organ doses to the limiting age group from liquid releases are reported in Table 4A. These estimated doses are well below the 10 CFR Part 50, Appendix I dose criteria of ODCM 3/4.2.2. Table 4B provides an estimate of the total annual dose impact (including contribution from liquids) associated with the highest exposed member of the public for demonstration of compliance to the dose standard contained in 40 CFR Part 190 for the uranium fuel cycle.

3

3.2 Doses From Noble Gases ODCM 3/4.3.2 limits the gamma air dose (5 mrad per quarter, and 10 mrad per year) and beta air (10 mrad per quarter, and 20 mrad per year) dose from noble gases released in gaseous effluents from the site to areas at and beyond the site boundary to those specified in 10 CFR Part 50, Appendix I. By implementing these, ODCM 3/4.3.2 assures that the releases ofradioactive noble gases in gaseous effluents will be kept "as low as is reasonably achievable."

Dose estimates due to the release of noble gases to the atmosphere are typically calculated at the site boundary, at the nearest resident in each of the sixteen principal compass directions, at the point of highest off-site ground level air concentration of radioactive materials, and at each of the milk animal locations located within five miles of the plant. For 2017, there were no noble gases detected in effluents released from the plant stack.

3.3 Dose From Radionuclides in Particulate Form and Tritium ODCM 3/4.3.3 limits the organ dose to a member of the public from tritium and radionuclides in particulate form in gaseous effluents released from the site to areas at and beyond the site boundary to those specified in 10 CFR Part 50, Appendix I (7.5 mrem per quarter and 15 mrem per year). By implementing the requirements of 10 CFR Part 50, Appendix I, ODCM 3/4.3 .3 assures that the releases of any tritium and particulates in gaseous effluents will be kept "as low as is reasonably achievable."

During 201 7, two frac tanks were used on the Vermont Yankee site to temporarily store (outdoors) tritium-contaminated water extracted from onsite groundwater wells. The quantity of tritium released to the atmosphere through the evaporation of water from this frac tank was estimated, and the dose consequence to the maximally exposed individual was calculated.

Exposure pathways that could exist as a result of the planned (routine) release of particulates to the atmosphere include external irradiation from activity deposited onto the ground surface, inhalation, and ingestion of vegetables, meat and milk. Dose estimates for 201 7 were made at the site boundary and nearest resident in each of the sixteen principal compass directions, as well as all milk animal locations within five miles of the plant. The nearest resident and milk animals in each sector were identified by the most recent annual land use census (see Table 4C). Although milk collection has been discontinued due to the permanently shutdown and defueled status of the plant and identification of the nearest milk animals is no longer required per Section 3/4.5.2 of the ODCM, milk animal receptor locations were conservatively retained in the dose analysis. Also, a vegetable garden was conservatively assumed to exist at each milk animal and nearest resident location. Furthermore, the meat pathway was assumed to exist at each milk cow location since this data category is not part of the annual land use census. Doses were also calculated at the point of maximum ground level air concentration of radioactive materials in gaseous effluents and included the assumption that the inhalation, vegetable garden, and ground plane exposure pathways exist for an individual with a 100 percent occupancy factor.

It is assumed that milk and meat animals are free to graze on open pasture during the second and third quarters with no supplemental feeding. This assumption is conservative since most of the milk animals inventoried in the site vicinity are fed stored feed throughout the entire year with only limited grazing allowed during the growing season. During the non-growing season (first and fourth quarters), the milk animals are assumed to receive only stored feed. During the growing season (second and third quarters), all animal feed is assumed to be derived from fresh pasture. Usage factors for gaseous effluents 4

I are listed by age group and pathway in Table 4D. Table 4E provides other dose model parllil!eter assumptions used in the dose assessments.

In previous years when the plant was operating, Carbon-14 was an important nuclide to consider in the effluent dose calculations. However, with the plant permanently shut down since December of 2014, there is no longer any plant-related Carbon-14 production and, therefore, no associated dose impact for 2017.

3.4 Whole Body Doses in Unrestricted Areas From Direct Radiation As opposed to prior years before the permanent shut down when the majority of the dose in the unrestricted area consisted of direct and skyshine radiation from N-16 decay in the Turbine Building steam cycle during power operations, there was no such source during 2017 due to the elimination of its production and its short half~life.

With the ongoing decommissioning of the plant, other past direct dose sources have been removed.

The North Warehouse was emptied and demolished during 2016 and the low level waste pad was emptied of all radioactive materials in 2014. Therefore, there are no longer any direct dose contributions associated with these past sources.

The remaining potential fixed sources of direct and scatter radiation to the site boundary are the Independent Spent Fuel Storage Installation (ISFSI) and old turbine rotors and casings in the Turbine Storage Facility. The annual dose is based on dose rate measurements in these storage facilities and is projected to impact the same most restrictive site boundary dose location.

The estimated direct radiation dose from all major sources combined for the most limiting site boundary location is listed in Table 4A. These site boundary doses assume a 100 percent occupancy factor, and take no credit for the shielding effect of any residential structure.

Table 4B lists the combination of direct radiation doses at the limiting site boundary location and the maximum offsite dose from gaseous and liquid effluents for the purpose of demonstrating compliance with the dose standards contained in 40 CFR Part 190. For 2017, this annual dose was below the 25 mrem total body and organ limit, as well as the 75 mrem thyroid limit, of 40 CFR Part 190.

3.5 Doses From On-Site Disposal of Septic Waste, Cooling Tower Silt and Soil ODCM Appendices B, F, and I require that all septic waste, cooling tower silt, and sand/soil applied within the approved designated disposal areas be controlled to ensure the dose to a maximally exposed individual during the period of Vermont Yankee site control is limited to less than 1 mrem/year to the whole body and any organ. After the period associated with Vermont Yankee operational control, the dose to the inadvertent intruder is to be limited to 5 mrem/year. The projected dose from on-site disposals of septic waste, cooling tower silt, and sand/soil mixes is given in Appendix J of this report.

During 2017 there was no septage sludge, soil or cooling tower silt spread. The last spreading occurred on October 20, 2015. The dose limits applicable to the on-site spreading of materials were met for the dose associated with past spreading activities.

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3.6 On-Site Recreational Activities During 2017, no access to the on-site boat launching ramp located north of the intake structure was permitted for employees, their families, and guests. As such, there was no associated dose impact to members of the public due to any recreational activities on-site.

REFERENCES

1. Off-Site Dose Calculation Manual (ODCM), Revision 39, Entergy Nuclear Vermont Yankee, LLC, dated March 5, 2018.

2. Regulatory Guide 1.109, "Calculation of Annual Doses to Man From Routine Release of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I," U.S.

Nuclear Regulatory Commission, Office of Standards Development, Revision 1, October 1977.

3. Safety Guide 1.23, "Onsite Meteorological Programs," U.S. Atomic Energy Commission, February 17, 1972.

4. Regulatory Guide 1.111, "Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light-Water-Cooled Reactors," U.S. Nuclear Regulatory Commission, Office of Standards Development, March 1976.

5. Meteorology and Atomic Energy, 1968, Section 5-3.2.2, "Cloud Depletion," page 204, U.S. Atomic Energy Commission, July 1968.

6. Regulatory Guide 1.21, "Measuring, Evaluating, and Reporting Radioactive Material in Liquid and Gaseous Effluents and Solid Waste," U.S. Nuclear Regulatory Commission, Office of Nuclear Regulatory Research, Revision 2, June 2009.

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TABLElA Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2017 Gaseous Effluents -Summation of All Releases p

Quarter Quarter Unit P.rror 1 2 0/,,.

A. Fission and Activation Gases

1. Total release Ci ND ND +/-2.30E+Ol

2. Average release rate for period µCi/sec ND . ND NIA

3. Percent ofODCM limit (1) % ND ND NIA B. Iodines

1. Total Iodine Ci ND ND +/-1.80E+Ol

2. Average release rate for period µCi/sec ND ND NIA

3. Percent ofODCM limit (3) % (3) (3) NIA C. Particulates

1. Particulates with T-1/2>8 days Ci ND ND +/-l.80E+Ol

2. Average release rate for period µCi/sec ND ND NIA

3. Percent of ODCM limit % (3) (3) NIA

4. Gross alpha radioactivity Ci ND ND NIA D. Tritium (4)

1. Total release Ci l.04E-01 2.85E-01 +/-1.80E+Ol

2. Average release rate for period µCi/sec 1.28E-02 3.62E-02 NIA

3. Percent ofODCM limit (2) . .. % 6.66E-04 l.82E-03 NIA E. Carbon-14

1. Total release Ci ND ND NIA

2. Percent of ODCM limit % (3) (3) NIA ND =Not Detected, or in the case ofC-14, no power operations in 2017 leads to a zero estimate ofC-14 production/release. *

(1) ODCM Control 3.3.2. for the most limiting of beta air or gamma air dose. Percentage ofODCM limit calculated using Method I dose results.

(2) Percentage ofODCM limit calculated using Method I dose results based on the limits ofODCM Control 3.3.3.

(3) With respect to the form of Table IA from Regulatory Guide 1.21, Revision 1 (Reference 6), any dose contribution from Carbon-14, Iodines, and particulates are included with Tritium in Part D.

(4) Tritium released through evaporation from the on-site frac tank is included in these totals.

7

TABLElA (Continued)

Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2017 Gaseous Effluents -Summation of All Releases Quarter Quarter Est. Total Unit 3 4 Error,%

A. Fission and Activation Gases

1. Total release Ci ND ND +/-2.30E+Ol

2. Average release rate for period µCi/sec ND ND NIA

3. Percent ofODCM limit (1) % ND ND NIA B. Iodines

1. Total Iodine Ci ND ND +/-l.80E+Ol

2. Average release rate for period µCi/sec ND ND NIA

3. Percent ofODCM limit (3) % (3) (3) NIA C. Particulates

1. Particulates with T-1/2>8 days Ci ND ND +/-1.80E+Ol

2. Average release rate for period µCi/sec ND ND NIA

3. Percent of ODCM limit % (3) (3) NIA

4. Gross alpha radioactivity Ci ND ND NIA D. Tritium (4)

1. Total release Ci l.65E-01 l.lOE-01 +/-l.80E+Ol

2. Average release rate for period µCi/sec 2.l lE-02 l.43E-02 NIA

3. Percent ofODCM limit (2) % l.06E-03 7.00E-04 NIA E. Carbon-14

1. Total release Ci ND ND NIA

2. Percent ofODCM limit % (3) (3) NIA ND= Not Detected, or in the case of C-14, no power operations in 2017 leads to a zero estimate of C-14 production/release.

(I) ODCM Control 3.3.2. for the most limiting of beta air or gamma air dose. Percentage ofODCM limit calculated using Method I dose results.

(2) Percentage ofODCM limit calculated using Method I dose results based on the limits ofODCM Control 3.3.3.

(3) With respect'to the form of Table IA from Regulatory Guide 1.21, Revision 1 (Reference 6), any dose contribution from Carbon-14, Iodines, and particulates are included with Tritium in Part D.

(4) Tritium released through evaporation from the on-site frac tank is included in these totals.

8

TABLElB Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2017 Gaseous Effluents - Elevated Releases Continuous Mode Batch Mode ( 1)

Quarter Quarter Nuclides Released Units 1 2 1 2

1. Fission Gases Argon-41 Ci ND ND Krypton-85 Ci ND ND Krypton-85m Ci ND ND Krypton-87 Ci ND ND Krypton-88 Ci ND ND Xenon-133 Ci ND '

ND Xenon-133m Ci ND ND Xenon-135 Ci ND ND Xenon-135m Ci ND ND Xenon-138 Ci ND ND Unidentified Ci ND ND Total for Period Ci ND ND (1) (1)

2. Iodines Iodine-131 Ci ND ND Iodine-133 Ci ND ND '

Iodine-135 Ci ND ND Total for Period Ci ND ND (1) (1)

3. Particulates Strontium-89 Ci ND ND Strontium-90 Ci ND ND Cesium-134 Ci ND ND Cesium-137 Ci ND ND Barium-Lanthanum-140 Ci ND ND Manganese-54 Ci ND ND Chromium-51 Ci ND ND Cobalt-57 Ci ND ND Cobalt-58 Ci ND ND Cobalt-60 Ci ND ND Cerium-141 Ci ND ND Zinc-65 Ci ND ND Total for Period Ci ND ND (1) (1)

ND Not Detected at the plant stack.

(I) There were no batch mode gaseous releases for this reporting period.

9

TABLEIB (Continued)

Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2017 Gaseous Effluents -Elevated Releases Continuous Mode Batch Mode (1)

Quarter Ouarter N uclides Released Units 3 4 3 4

1. Fission Gases Krypton-85 Ci ND ND Krypton-85m Ci ND ND Krypton-87 Ci ND ND Krypton-88 Ci ND ND Xenon-133 Ci ND ND Xenon-133m Ci ND ND Xenon-135 Ci ND ND Xenon-135m Ci ND ND Xenon-138 Ci ND ND Unidentified Ci ND ND Total for Period Ci ND ND (1) (1)

2. Iodines Iodine-131 Ci ND ND Iodine-133 Ci ND ND Iodine-135 Ci ND ND Total for Period Ci ND ND (1) (1)

3. Particulates Strontium-89 Ci ND ND Strontium-90 Ci ND ND Cesium-134 Ci ND ND Cesium-137 Ci ND ND Barium-Lanthanum-140 Ci ND ND Manganese-54 Ci ND ND Chromium-51 Ci ND ND Cobalt-58 Ci ND ND Cobalt-60 Ci ND ND Cerium-141 Ci ND ND Cerium-144 Ci ND ND Zinc-65 Ci ND ND Total for Period Ci ND ND (1) (1)

ND Not Detected at the Plant Stack.

(1) There were no batch mode gaseous releases for this reporting period.

10

TABLElC Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2017 Gaseous Effluents - (Routine) Ground Level Releases C2>

Continuous Mode Batch Mode Quarter Quarter Nuclides Released Units 1 (1) 2 (1) 1 (1) 2 (1)

1. Fission Gases Krypton-85 Ci Krypton-85m Ci Krypton-87 Ci Krypton-88 Ci Xenon-133 Ci Xenon-135 Ci Xenon-135m Ci Xenon-138 Ci Unidentified Ci Total for Period Ci

2. Iodines Iodine-131 Ci Iodine-133 Ci Iodine-I 35 Ci Total for Period Ci

3. Particulates Strontium-89 Ci Strontium-90 Ci Cesium-134 Ci Cesium- 137 Ci Barium-Lanthanum-140 Ci Manganese-54 Ci Chromium-51 Ci Cobalt-58 Ci Cobalt-60 Ci Cerium-141 Ci Zinc-65 Ci Iron-55 Ci Total for Period Ci (1) There were no routine ground level gaseous releases for this reporting period.

(2) No radioactively contaminated used oil was burned during 2017.

11

TABLE IC (Continued)

Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2017 Gaseous Effluents - (Routine) Ground Level ReleasesC2>

Continuous Mode Batch Mode Quarter Quarter Nuclides Released Units 3 (1) 4 (1) 3 (1) 4 (1)

1. Fission Gases Krypton-85 Ci Krypton-85m Ci Krypton-87 Ci Krvoton-88 Ci Xenon-133 Ci Xenon-135 Ci Xenon-135m Ci Xenori-138 Ci Unidentified Ci Total for Period Ci

2. Iodines Iodine-131 Ci Iodine-133 Ci Iodine-135 Ci Total for Period Ci

3. Particulates Strontium-89 Ci Strontium-90 Ci Cesium- 134 Ci Cesium-137 Ci Barium-Lanthanum- 140 Ci Manganese-54 Ci Chromium-51 Ci Cobalt-58 Ci Cobalt-60 Ci Cerium-141 Ci Zinc-65 Ci Iron-55 CI Total for Period Ci (1) There were no ground level gaseous releases for this reporting period.

(2) No radioactively contaminated used oil was burned during 2017.

12

TABLE ID Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2017 Gaseous Effluents -Non-routine Releases Quarter Quarter Nuclides Released Units 1(1) 2(1) 3(1) 4(1)

1. Fission Gases Krypton-85 Ci Krypton-85m Ci Krypton-87 Ci Krypton-88 Ci Xenon-133 Ci Xenon-135 Ci Xenon-135m Ci Xenon-138 Ci Unidentified Ci Total for Period Ci

2. Iodines Iodine-131 Ci Iodine-133 Ci Iodine-I 35 Ci Total for Period Ci

3. Particulates Strontium-89 Ci Strontium-90 Ci Cesium-134 Ci Cesium- 137 Ci Barium-Lanthanum-140 Ci Manganese-54 Ci Chromium-51 Ci Cobalt-58 Ci Cobalt-60 Ci Cerium-141 Ci Zinc-65 Ci Iron-55 Cl Total for Period Ci (1) There were no non-routine ground level gaseous releases for this reporting period.

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TABLE2A Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2017 Liquid Effluents - Summation of All Releases Est. Total Units Quarter 1 Quarter 2 Error,%

A. Fission and Activation Products

1. Total Release (not including tritium, gases, alpha) Ci ND ND NIA I

2. Average Diluted Concentration During Period µCi/ml ND ND

3. Percent of Applicable Limit (1) % ND ND B. Tritium

1. Total Release Ci 5.82E-03 5.00E-03 +/-2.00E+Ol I

2. Average Diluted Concentration During Period µCi/ml l.18E-06 l.05E-06

3. Percent of Applicable Limit (1) % 3.82E-05 3.29E-05 C. Dissolved and Entrained Gases

1. Total Release Ci ND ND NIA I

2. Average Diluted Concentration During Period µCi/ml ND ND

3. Percent of Applicable Limit % ND ND D. Gross Al ha Radioactivit

1. Total Release Ci ND ND NIA E. Volume of Waste Release rior to dilution Liters (2) (2) NIA F. Volume of Dilution Water Used During Period Liters 3.89E+06 3.89E+06 (3)

ND Not detected in liquid effluents.

(1) The percent of limit is based on the ODCM Control 3.2.2 limiting dose (1.5 mrem/quarter to the total body) from liquid effluents and is related to the abnormal leakage of tritiated plant water into the underground environment.

The percent of the concentration limits specified in Appendix B to 10CFR20.1001 - 20.2402, Table 2, Column 2 (ODCM Control 3. 2.1) were estimated to be 0.12%, 0.11 %, 0.11 %, and 0.11 % for the first, second, third, and fourth quarters, respectively.

(2) Leakage of contaminated plant water to subsurface areas was stopped in February 2010. The release of contaminated ground water to the Connecticut River is based on site boundary monitoring well data collected during 2017.

(3) Dilution due to groundwater flow through the affected subsurface plume area toward the Connecticut River was estimated to be 7.83 gpm (or 3.89E+06 liters per quarter) during 2017. An estimated total error is not applicable.

14

TABLE2A (Continued)

Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2017 Liquid Effluents - Summation of All Releases Est. Total Units Quarter 3 Quarter 4 Error,%

A. Fission and Activation Products

1. Total Release (not including tritium, gases, alpha) Ci ND ND NIA I

2. Average Diluted Concentration During Period µCi/ml ND ND

3. Percent of Applicable Limit ( 1) % ND ND B. Tritium

1. Total Release Ci 5.71E-03 5.61E-03 +/-2.00E+Ol I

2. Average Diluted Concentration During Period µCi/ml l.08E-06 l.06E-06

3. Percent of Applicable Limit (l) % 3.75E-05 3.68E-05 C. Dissolved and Entrained Gases i 1. Total Release Ci ND ND NIA I

2. Average Diluted Concentration During Period µCi/ml ND ND

3. Percent of Applicable Limit % ND ND D. Gross Al ha Radioactivit

1. Total Release Ci ND ND NIA E. Volume of Waste Release rior to dilution Liters (2) (2) NIA F. Volume of Dilution Water Used During Period Liters 3.89E+06 3.89E+06 (3)

ND Not detected in liquid effluents.

(l) The percent of limit is based on the ODCM Control 3.2.2 limiting dose (1.5 mrem/quarter to the total body) from liquid effluents and is related to the abnormal leakage of tritiated plant water into the underground environment.

The percent of the concentration limits specified in Appendix B to 10CFR20. l 00 l - 20.2402, Table 2, Column 2 (ODCM Control 3. 2.1) were estimated to be 0.12%, 0.11 %, 0.11 %, and 0.11 % for the first, second, third, and fourth quarters, respectively.

(2) Leakage of contaminated plant water to subsurface areas was stopped in February 2010. The release of contaminated ground water to the Connecticut River is based on site boundary monitoring well data collected during 2017.

(3) Dilution due to groundwater flow through the affected subsurface plume area toward the Connecticut River was estimated to be 7.83 gpm (or 3.89E+06 liters per quarter) during 2017. An estimated total error is not applicable.

15

TABLE2B Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2017 Liquid Effluents - Routine Releases Continuous Mode Batch Mode I Nuclides Released Units Quarter 1 I Quarter 2 Quarter 1 I Quarter 2 Strontium-89 Ci - - - -

Strontium-90 Ci - - - -

Cesium-134 Ci - - - -

Cesium-137 Ci - - - -

Iodine-131 Ci - - - -

Cobalt-58 Ci - - - -

Cobalt-60 Ci - - - -

Iron-59 Ci - - - -

Zinc-65 Ci - - - -

Manganese-54 Ci - - - -

Zirconium-Niobium-95 Ci - - - -

Molybdenum-99 Ci - - - -

Technetium-99 Ci - - - -

Barium-Lanthanum-140 Ci - - - -

Cerium-141 Other (specify) Ci Ci Ci Unidentified I Ci I Total for Period (above) Ci Xe-133 Ci Xe-135 Ci ND Not detected in liquid effluents.

Dash indicates no release of this type.

16

TABLE2B (Continued)

Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 201 7 Liquid Effluents - Routine Releases Continuous Mode Batch Mode I Nuclides Released Units Quarter 3 I Quarter 4 Quarter 3 I Quarter 4 Strontium-89 Ci - - - -

Strontium-90 Ci - - - -

Cesium-134' Ci - - - -

Cesium-137 Ci - - - -

Iodine-131 Ci - - - -

Cobalt-58 Ci - - - -

Cobalt-60 Ci - - - -

Iron-59 Ci - - - -

Zinc-65 Ci - - - -

Manganese-54 Ci - - - -

Zirconium-Niobium-95 Ci - - - -

Molybdenum-99 Ci - - - ' -

Technetium-99 Ci - - - -

Barium-Lanthanum-140 Ci - - - -

Cerium-141 Other (specify) Ci Ci Ci Unidentified I Ci I ('

Total for Period (above) Ci Xe-133 Ci I/

Xe-135 Ci ND Not detected in liquid effluents.

Dash indicates no release of this type.

17

Table 3 Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report First and Second Quarters.for 2017 Solid Waste and Irradiated Fuel Shipments A. Solid Wasta Shippacf.Off.Site for Burial or Disposal (n<>t Irradiated Fuel) 1, Type of Waste a.S ent resins, ftltersludges, etc.

Ci ii b.Ory Compressible Wam,.e uipment, etc, ii Ci .0*

i c; Irradiated com onents, control redo, etc. m 0.

Ci 0 d.Other Oil m ' 0 Ci *o a;Spent resins, fifter sludges etc. 0 Ci 0 b,Drv Compressible Waote equipment etc, m '. 13.4 ::25%

Ci 0,03 +/-25%

c. Irradiated components, control rods; ~tc. m' 0 0

d .Other (Oil\ (water) m

3.42 :!:25%

Ci M2 +/-25%

2. 1:stlinate of Major Nuclide Composition (By Type of Waste)

... *.. * ......... / .....

Spent resin$, fi!ter.sl_i.!dges

- ,,*A;.* *, * '}_,,\;< *'

Nuclide Parcant(.1) Nuclide Percent(!) Nuclide Percant(l) Nuclide Percent(!)

H3 9.9 Co60 0.6 0,4 (1) .Includes only those nuclidesthat are greater than 0.1% of the total activity

3. Disposition of Solid Waste Shipments (1" & 2d0,uarters)

No,of.Sliipniariii;:cf.: Y :. ,*:; ., .from vy:o,:;. , . *Fmri(Prccesscr * ...

28 . 28* Truck 28 7 7 Truck 7 Truck Truck Truck El. Irradiated Fuel Shipments (Disposition): None

c. Additional Data (1" & 2"" Quarters)

..,.:.::.< '.'\ Supplementa!.tnforri,atloil .;>.;;- \':***:: ,/ . .,WtoProtessor. *...,,; ::** ,,,'

' W to B\frial ., ';

Protes:sorsto Burlal:(J:,,;'

Class of Solid Waste Shipped A N/A A Type of Containers U:;ad GDC N/A GDC SolldificationAgent er Absorbent Used None None None.

GR= Gallaher Road BCO = Bear Creek Operations WCS =Waste Control Speclallst~

ES= Energy Solutions GDC =GenerafDesign Container 18

Table 3 Entergy Nuclear Vermont Yankee Effluent and Waste. Disposal Annual Report Third and Fourth Quarters for 2017 Solid Waste and Irradiated Fuel Shipments A. Solrd Waste Shipped off-Site.for Burial or Disposal (not Irradiated Fuel)

1. Type of Waste

<*:;. .*. <-*.*: **. 1:

.* Shio""d fiom'VV for::ll~Hal .; .:* . Un~'. ; ii/ . Co.~~~;.;h:&4******* ** ': Esti Tot~ri:'rror~/i,;

a a.Spent resins, filter sludges, etc. m 4.:ZSE-1 +/-ZS%

Ci 1.12 +/-2S%

b.Dry Compressible Waste, equipment, etc. m' 34.1 +/-25%

Cl l.19E*2 +/-25%

c. Irradiated components, control rods etc. m' Q Ci Q d.Other (0 ii) m' 0 Ci 0

><(*:, .* *:** '

Unit Quarters 3 & 4 a.Spent resins, filter sludl!es, etc. m " 0 Cl 0 b,Dry Compressible Waste eoulpment. etc. m

15.04 +/-25%

Cl 0.01 +/-25%

c, Irradiated comoonents, control rods etc. m) 0 Ci 0 d.Other/011) {water) m " 2.35 +/-25%

Cl 0.01 +/-25%

2, Estimate cf Majer Nuclide Composition (By Type of Waste)

..:. *: .. * ** * *

f\ * * :.;: :.' ,.,. D,yCompr~s.,ible{yaste, equipment, *:

Spent resins,filterslu~ges:* .* . * *

etc:" Other Waste?

.Nuclide Percent(l) Nuclide Percent(l) Nuclide Percent(l) Nuclide Perc:ent(l) 45 Co-60 62 H3 99 Nl63. 26 Fess 21 C060 0.6.

Fess 21 Zn65 13 Cs137 0.4 Cs-137 3 Mn54 4 Zi165 2 Mn*.S4 0.6.

(2) Includes only those nuclides that are greater than 0.1% of the total activity

3. Disposition of Solid Waste Shipments (3'0 & 4th Quarters)

No; or Shipments ... From VY From,Proce ..or ** .Mode

...... To Proi:a!Sor * ... To'Btirial * *. . ::

1 1 Truck 1 1 l Truck 1 22 22 Truck 22 8 8 Truck s Truck

!I. Irradiated Fuel Shipments (Disposition): None C, Additional Data (l" & 2** Quarters)

. .. *suppiemental)nformation": * ...

IN to Processor. ** **** IN.to Burial * 'Processors to.Burial :.

Class of Solid Waste Shipped A A A Type of Containers Used GDC GDC GDC Solidification Agent or Absorbent Used None None None GR= Gallaher Road BCO = Bear Creek Operations WCS = Waste Control Specialists ES= Energy Solutions GDC =General Design Container 19

TABLE4A Entergy Nuclear Vermont Yankee Maximum* Quarterly and Annual Off-Site Doses from Direct Radiation and Liquid and Gaseous Effluents for 2017 (10CFR50, Appendix I)

Dose (mremiaJ Source 1"' Quarter 2"u Quarter 3*u Quarter 4"' Quarter Year~ 0 J

' , :' ')>. : ' ,, :/, *,C , ,,,,,,,,,

' ,,,' ,.,,,, ,, ? ,,,,*

.. :-:,*, =.:.,:. \ I,iquid Effluents > i/ ** ,

Total Body Dose 5.73E-07 4.93E-07 5.63E-07 5.52E-07 2.18E-06 Footnotes (c) (c) (c) (c) (c)

Organ Dose 5.73E-07 4.93E-07 5.63E-07 5.52E-07 2.18E-06 Footnotes (c) (c) (c) (c) (c)

.. ., ,,,,,' ,( : >, ;,,Airborne Effl,uents ,',, <,,,,'* ' ' . **.. ,. ;;:c* , : *,;;.',: ': :

Iodines, H-3, C-14, 2.34E-05 9.88E-05 5.84E-05 5.92E-05 2.40E-04 and Particulates Footnotes (t) (t) (g) (g)

.,.** . . ,, ',, , * . .*. , . \ Noble Gases. '

Beta Air (mrad) -- -- -- -- --

Footnotes (d) (d) (d) (d)

Gamma Air (mrad) -- -- -- -- --

Footnotes (d) (d) (d) (d)

., ... ., ' DirectRadiation I:, * '* ' ', ' .. '

1.918 1.918 1.918 1.918 7.67 (e)

"Maximum" means the largest fraction of the corresponding 10CFR50, Appendix I dose design objective.

(a) The lettered footnotes indicate the age group, organ, and location of the dose receptor, where appropriate.

(b) The yearly dose is the sum of the doses for each quarter, or a full annual assessment.

(c) The critical age group/organ for the Maximum Exposed Individual (MEI) is the Adult/Total Body and all organs (except Bone) from the release ofH-3 to groundwater.

(d) There were no noble gas releases in this quarter.

(e) Maximum direct dose point located on the old west site boundary, approximately 208 meters from the Turbine Building.

(f) The critical age group/organ for the MEI is the Child/all organs (except Bone), at a location NW, 2600 meters from the stack.

(g) The critical age group/organ for the MEI is the Child/all organs (except Bone), at a location WNW, 2400 meters from the stack.

20

TABLE4B Entergy Nuclear Vermont Yankee Maximum* Annual Off-Site Doses from Direct Radiation and Liquid and Gaseous Effluents for 2017 (40CFR190)

Total Body Maximum Organ Thyroid Pathway (mrem) (mrem) (mrem)

Direct External (a) (b) 7.67 7.67 7.67 Liquids (c) 2.18E-06 2.18E-06 2.18E-06 Gases (c) 2.40E-04 2.40E-04 2.40E-04 Annual Total (d) 7.67 7.67 7.67

The location of the projected maximum individual doses from combined direct radiation plus liquid and gaseous effluents corresponds to residences at the southwest boundary relative to the Turbine Hall.

(a) No residential shielding credit or occupancy time fraction (i.e., occupancy is assumed to be 100%)

is used. Expected direct external radiation doses would be reduced by approximately 54% with a realistic residential shielding credit and occupancy time (i.e., by using a 0. 7 shielding factor from Regulatory Guide 1.109 (Reference 2) and an annual occupancy time of 6760 hours0.0782 days 1.878 hours 0.0112 weeks 0.00257 months ).

(b) The direct dose reported here was calculated using the current ODCM methodology and represents the dose to the former nearest residence, which was located in the South sector at 3 85 meters from the stack prior to the vacancy of this residence in 2008 and the purchase ofland by Vermont Yankee.

(c) Maximum dose to any organ over all age groups for each release.

(d) Annual dose limits contained in 40 CFR Part 190 are 25 mrem to the total body and any organ, and 75 mrem to the thyroid for any real member of the public.

21

TABLE4C Receptor Locations Entergy Nuclear Vermont Yankee Nearest Milk Sector Site Boundary Cl) Nearest Resident<2l Animal C2lC3l (meters) (meters) (meters)

N 400 1400 --

NNE 350 1384 5520 (cows)

NE 350 1255 --

ENE 400 966 --

E 500 933 --

ESE 700 1915 --

SE 750 1963 6670 (cows)

SSE 850 2044 --

s 385 644 --

SSW 300 451 --

SW 250 418 --

WSW 250 451 9730 (cows) w 300 628 820 (cows)

WNW 400 1062 --

NW 550 2253 --

NNW 550 1738 --

(1) Site boundary locations taken from Table 6.10.2 of the ODCM.

(2) The location(s) given are based on information from the Vermont Yankee 2017 Land Use Census and are relative to the plant stack. Gardens are assumed to be present at all resident locations.

(3) Although milk collection has been discontinued due to the permanently shutdown and defueled status of the plant, receptor locations were conservatively retained in the dose analysis.

22

TABLE4D Usage Factors for Environmental Pathways Entergy Nuclear Vermont Yankee*

Age Fish Potable Veg. Leafy Veg. Milk Meat Inhalation Group (kg/yr) Water (kg/yr) (kg/yr) (I/yr) (kg/yr) (m 3/yr)

(l/yr)

Adult 21 730 520 64 310 110 8,000 Teen 16 510 630 42 400 65 8,000 Child 6.9 510 520 26 330 41 3,700 Infant 0 330 0 0 330 0 1,400

Regulatory Guide 1.109, Table E-5 (Reference 2).

23

TABLE4E Environmental Parameters for Gaseous Effluents

Entergy Nuclear Vermont Yankee Vegetables Cow Milk Goat Milk Meat Variable Stored Leafy Pasture Stored e Stored Pasture Stored I I I I I I Agricultural Productivity YV (kg/m2) 2 2 0.70 2 0.70 2 0.70 2 p 240 240 240 240 240 240 240 240 Soil Surface Density (lrn:/m 2)

T Transport Time to User (hrs) -- -- 48 48 48 48 480 480 TB Soil Exposure Time<a)(hrs) 131,400 131,400 131,400 131,400 131,400 131,400 131,400 131,400 TE Crop Exposure Time to Plume 1,440 1,440 720 1,440 720 1,440 720 1,440 (hrs)

TH Holdup After Harvest (hrs) 1,440 24 0 2,160 0 2,160 0 2,160 QF Animals Daily Feed (kg/day) -- -- 50 50 6 6 50 50 FP Fraction of Year on Pasture -- -- (b) -- (b) -- (b) --

FS Fraction Pasture Feed When on Pasture<c)

-- -- 1 -- 1 -- 1 --

Note: Footnotes on following page.

24

TABLE 4E (Continued)

Environmental Parameters for Gaseous Effluents Entergy Nuclear Vermont Yankee Vegetables Cow Milk Goat Milk Meat Variable Stored Leafy Stored Stored Pasture Stored FG Fraction of Stored Vegetables 0.76 -- -- -- -- -- -- --

Grown in Garden FL Fraction of Leafy Vegetables -- 1.0 -- -- -- -- -- --

Grown in Garden FI Fraction Elemental Iodine = 0.5 -- -- -- -- -- -- -- --

H Absolute Humidity = 5.6Cdl -- -- -- -- -- -- -- --

From VY ODCM, Table 6.9.1 (Reference 1).

(a) For Method II dose/dose rate analyses of identified radioactivity releases of less than one year, the soil exposure time for that release may be set at 8,760 hours0.0088 days 0.211 hours 0.00126 weeks 2.8918e-4 months ( one year) for all pathways.

(b) For Method II dose/dose rate analyses performed for releases occurring during the first or fourth calendar quarters, the fraction of time animals are assumed to be on pasture is zero (non-growing season). For the second and third calendar quarters, the fraction of time on pasture (FP) will be set at 1.0. FP may also be adjusted for specific farm locations if this information is so identified and reported as part of the land use census.

(c) For Method II analyses, the fraction of pasture feed while on pasture may be set to less than 1.0 for specific farm locations if this information is so identified and reported as part of the land use census.

(d) For all Method II analyses, an absolute humidity value equal to 5.6 (gm/m3) shall be used to reflect conditions in the Northeast (

Reference:

Health Physics Journal, Volume 39 (August), 1980; Pages 318-320, Pergammon Press).

25

TABLE4F Environmental Parameters for Liquid Releases (Tritium) Via Groundwater Entergy Nuclear Vermont Yankee Variable Potable Water Aquatic Food Stored Veg. Leafy Veg. Meat Cow Milk Name (Units)

Mixing Ratio 2.78E-06 5.IOE-04 2.78E-06 2.78E-06 2.78E-06 2.78E-06 Transit Time (hrs)* 12 24 0 0 0 0 Water Uptake**

(animal) (L/day)

-- -- -- -- 50.0 60.0 Feed Uptake**

(animal) (kg/day)

-- -- -- -- 50.0 50.0

Values are from Regulatory Guide 1.109, Table E-15 (Reference 2)

- Values are from Regulatory Guide 1.109, Table E-3 (Reference 2) 26

TABLE5A VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS A CLASS FREQUENCY (PERCENT) = 1.10 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 2 1 1 1 3 2 3 0 0 0 0 1 0 0 0 1 0 15 (1) 2.13 1. 06 1. 06 1. 06 3.19 2.13 3.19 .00 .00 .00 .00 1. 06 .00 .00 .00 1. 06 .00 15.96 (2) .02 .01 .01 .01 . 04 .02 .04 .00 .00 .00 .00 .01 .00 .00 .00 .01 .00 .18 4-7 2 0 0 0 5 5 4 1 0 1 0 0 0 1 1 8 0 28 (1) 2.13 .00 .00 .00 5.32 5.32 4.26 1. 06 .00 1. 06 .00 .00 .00 1. 06 1. 06 8.51 .00 29.79 (2) .02 .00 .00 .00 .06 .06 .05 .01 .00 .01 .00 .00 .00 .01 .01 .09 .00 .33 8-12 7 0 0 0 2 6 0 3 0 0 0 0 1 1 1 3 0 24 (1) 7.45 .00 .00 .00 2.13 6.38 .00 3.19 .00 .00 .00 .00 1. 06 1. 06 1. 06 3.19 .00 25.53 (2) .08 .00 .00 .00 .02 .07 .00 .04 .00 .00 .00 .00 .01 .01 .01 .04 .00 .28 13-18 0 0 0 0 0 0 0 0 0 0 0 0 3 0 10 9 0 22 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 3.19 .00 10.64 9.57 .00 23.40 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .04 .00 .12 .11 .00 .26 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2 0 5 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 3.19 2.13 .00 5.32 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .04 .02 .00 .06 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 11 1 1 1 10 13 7 4 0 1 0 1 4 2 15 23 0 94 (1) 11. 70 1. 06 1. 06 1.06 10.64 13.83 7.45 4. 26 .00 1. 06 .00 1. 06 4.26 2.13 15.96 24.47 .00 100.00 (2) .13 .01 .01 .01 .12 .15 .08 .05 .00 .01 .00 .01 .05 .02 .18 .27 .00 1.10 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) 27

TABLE SB VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS B CLASS FREQUENCY (PERCENT) = 1. 86 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .DO .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .DO .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 2 1 2 1 3 2 0 0 1 1 0 0 0 0 0 0 0 13 (1) 1.27 . 63 1.27 . 63 1. 90 1.27 .00 .DO . 63 . 63 .00 .00 .00 .00 .00 .00 .00 8.23 (2) .02 .01 .02 .01 . 04 .02 .00 .00 .01 .01 .DO .00 .00 .00 .DO .00 .00 .15 4-7 8 1 2 5 16 11 11 5 0 0 0 1 0 0 3 10 0 73 (1) 5.06 . 63 1.27 3.16 10.13 6.96 6.96 3.16 .00 .00 .00 .63 .00 .00 1. 90 6.33 .00 4 6. 20 (2) .09 .01 .02 .06 .19 .13 .13 .06 .00 .00 .00 .01 .00 .00 .04 .12 .00 .86 8-12 7 1 0 0 1 4 6 10 3 0 1 0 3 0 6 14 0 56 (1) 4.43 . 63 .DO .00 . 63 2.53 3.80 6.33 1. 90 .00 . 63 .00 1. 90 .00 3.80 8.86 .00 35.44 (2) .08 .01 .00 .00 .01 .OS .07 .12 .04 .00 .01 .00 .04 .00 .07 .16 .00 .66 13-18 1 0 0 0 0 0 0 0 1 0 0 0 3 3 2 3 0 13 (1) . 63 .00 .00 .00 .00 .00 .00 .00 .63 .00 .DO .00 1. 90 1. 90 1.27 1. 90 .00 8.23 (2) .01 .00 .00 .00 .DO .00 .00 .00 .01 .00 .00 .00 .04 .04 .02 .04 .00 .15 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 3 (1) .00 .00 .DO .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 . 63 . 63 . 63 .00 1. 90 (2) .00 .00 .00 .00 .DO .00 .00 .00 .00 .00 .00 .00 .00 .01 .01 .01 .00 .04 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .DO .DO .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .DO .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 18 3 4 6 20 17 17 15 5 1 1 1 6 4 12 28 0 158 (1) 11. 39 1. 90 2.53 3.80 12.66 10.76 10.76 9.49 3.16 . 63 . 63 . 63 3.80 2.53 7.59 17.72 .00 100.00 (2) .21 .04 .OS .07 .23 .20 .20 .18 .06 .01 .01 .01 .07 .OS .14 .33 .00 1. 86 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO . 95 MPH) 28

TABLE5C VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION

35. 0 FT WIND DATA STABILITY CLASS C CLASS FREQUENCY (PERCENT) -

4.32 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ' .00 .00 .00 .00 .00 .00 C-3 9 6 7 6 9 3 1 1 1 1 0 1 0 0 2 2 0 49 (1) 2.45 1. 63 1. 90 1. 63 2.45 .82 .27 .27 .27 .27 .00 .27 .00 .00 .54 .54 .00 13.32 (2) .11 .07 .OB .07 .11 .04 .01 .01 .01 .01 .00 .01 .00 .00 .02 .02 .00 .58 4-7 20 3 6 11 19 37 29 16 10 0 2 2 2 5 11 10 0 183 (1) 5.43 .82 1. 63 2.99 5.16 10.05 7.88 4.35 2. 72 .00 .54 .54 .54 1. 36 2.99 2.72 .00 49.73 (2) .23 .04 .07 .13 .22 .43 .34 .19 .12 .00 .02 .02 .02 .06 .13 .12 .00 2.15 8-12 6 1 0 0 3 5 3 25 7 3 3 3 6 4 9 22 0 100 (1) 1. 63 .27 .00 .00 .82 1. 36 .82 6.79 1. 90 .82 .82 .82 1. 63 1. 09 2.45 5.98 .00 27.17 (2) .07 .01 .00 .00 .04 .06 .04 .29 .OB .04 .04 .04 .07 .05 .11 .26 .00 1.17 13-18 1 0 0 0 0 0 1 4 0 0 0 0 B 7 3 5 0 29 (1) .27 .00 .00 .00 .00 .00 .27 1. 09 .00 .00 .00 .00 2.17 1. 90 .82 1. 36 .00 7.88 (2) .01 .00 .00 .00 .00 .00 .01 .05 .00 .00 .00 .00 .09 .OB .04 .06 .00 .34 19-24 0 0 0 0 0 0 0 0 0 0 0 0 3 1 2 1 0 7 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .82 .27 .54 .27 .00 1. 90 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .04 .01 .02 .01 .00 .08 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 36 10 13 17 31 45 34 46 18 4 5 6 19 17 27 40 0 368 (1) 9.78 2. 72 3.53 4.62 8.42 12.23 9.24 12.50 4.89 1. 09 1.36 1. 63 5.16 4. 62 7.34 10.87 .00 100.00 (2) .42 .12 .15 .20 .36 .53 .40 .54 .21 .05 .06 .07 .22 .20 .32 .47 .00 4.32 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) 29

______.ii

TABLE5D VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS D CLASS FREQUENCY (PERCENT) = 49.21 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 0 0 2 1 0 1 0 0 1 1 2 3 0 0 0 11 (1) .00 .00 .00 .00 .05 .02 .00 .02 .00 .00 .02 .02 .05 .07 .00 .00 .00 .26 (2) .00 .00 .00 .00 . 02 .01 .00 .01 .00 .00 .01 .01 .02 .04 .00 .00 .00 .13 C-3 87 54 48 49 65 74 94 92 65 34 34 24 40 56 72 99 0 987 (1) 2.08 1. 29 1.15 1.17 1. 55 1. 77 2.24 2.20 1. 55 .81 .81 .57 .96 1. 34 1. 72 2.36 .00 23.57 (2) 1. 02 . 63 .56 .58 .76 .87 1.10 1. 08 .76 . 40 .40 .28 .47 .66 .85 1.16 .00 11. 60 4-7 145 56 30 21 59 122 248 223 109 23 27 36 85 83 217 301 0 1785 (1) 3. 46 1. 34 . 72 .50 1. 41 2.91 5.92 5.32 2.60 .55 . 64 .86 2.03 1. 98 5.18 7.19 .00 42.62 (2) 1. 70 .66 .35 .25 .69 1. 43 2.91 2. 62 1. 28 .27 .32 .42 1. 00 .98 2.55 3.54 .00 20.97 8-12 59 9 0 1 2 18 24 108 70 10 16 36 180 183 152 170 0 1038 (1) 1. 41 .21 .00 .02 .05 .43 .57 2.58 1. 67 .24 .38 .86 4.30 4.37 3.63 4.06 .00 24.79 (2) . 69 .11 .00 .01 .02 .21 .28 1. 27 .82 .12 .19 .42 2.11 2.15 1. 79 2.00 .00 12.20 13-18 5 1 0 0 0 0 2 19 16 1 2 6 74 96 74 31 0 327 (1) .12 .02 .00 .00 .00 .00 .05 .45 .38 .02 .05 .14 1. 77 2.29 1. 77 .74 .00 7.81 (2) .06 .01 .00 .00 .00 .00 .02 .22 .19 .01 .02 .07 .87 1.13 .87 .36 .00 3.84 19-24 0 0 0 0 0 0 0 0 0 0 0 0 9 11 10 6 0 36 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .21 .26 .24 .14 .00 .86 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .11 .13 .12 .07 .00 .42 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 2 0 4 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .02 .05 .00 .10 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .01 .02 .00 .05 ALL SPEEDS 296 120 78 71 128 215 368 443 260 68 80 103 391 432 526 609 0 4188 (1) 7.07 2.87 1. 86 1. 70 3.06 5.13 8.79 10.58 6.21 1. 62 1. 91 2. 46 9.34 10.32 12.56 14.54 .00 100.00 (2) 3.48 1. 41 .92 .83 1. 50 2.53 4.32 5.21 3.05 .80 . 94 1. 21 4.59 5.08 6.18 7.16 .00 49.21

(!)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO . 95 MPH) 30

TABLESE VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS E CLASS FREQUENCY (PERCENT) = 27.31 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 2 3 4 2 3 1 4 3 4 1 4 6 2 1 1 0 0 41 (1) .09 .13 .17 .09 .13 .04 .17 .13 .17 .04 .17 .26 .09 .04 .04 .00 .00 1. 76 (2) .02 .04 .05 .02 .04 .01 .05 .04 .05 .01 .05 .07 .02 .01 .01 .DO .00 .48 C-3 64 29 32 25 31 80 56 90 107 146 174 131 124 125 109 86 0 1409 (1) 2.75 1.25 1. 38 1. 08 1. 33 3.44 2.41 3.87 4.60 6.28 7.49 5.64 5.34 5.38 4.69 3.70 .00 60.63 (2) .75 .34 .38 .29 .36 .94 .66 1. 06 1. 26 1. 72 2.04 1. 54 1. 46 1. 47 1.28 1. 01 .00 16. 56 4-7 30 1 1 3 9 17 46 51 33 12 22 38 57 69 121 164 0 674 (1) 1. 29 .04 .04 .13 .39 .73 1. 98 2.19 1. 42 .52 .95 1. 64 2.45 2.97 5.21 7.06 .00 29.00 (2) .35 .01 .01 .04 .11 .20 .54 . 60 .39 .14 .26 .45 .67 .81 1. 42 1. 93 ,DO 7.92 8-12 5 0 0 0 0 0 4 15 12 3 3 1 35 32 28 42 0 180 (1) .22 .00 .00 .00 .00 .DO .17 . 65 .52 .13 .13 .04 1. 51 1. 38 1. 20 1. 81 .00 7.75 (2) .06 .00 .00 .00 .00 .00 .05 .18 .14 .04 .04 .01 .41 .38 .33 .49 .00 2.11 13-18 0 0 0 0 0 0 1 0 1 0 0 0 6 3 3 3 0 17 (1) .00 .00 .00 .00 .00 .00 . 04' .00 .04 .DO .00 .00 .26 .13 .13 .13 .00 .73 (2) .00 .DO .DO .00 .00 .00 .01 .00 .01 .00 .00 .DO .07 .04 .04 .04 .00 .20 19-24 0 0 0 0 0 0 0 1 0 0 0 0 1 1 0 0 0 3 (1) .00 .00 .00 .00 .00 .00 .00 .04 .DO .00 .00 .00 .04 .04 .DO .00 .00 .13 (2) .00 .00 .DO .00 .00 .00 .00 .01 .00 .00 .00 .00 .01 .01 .00 .00 .00 .04 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .DO .DO .00 .00 .00 .00 .00 .00 .00 .00 .00 .DO .00 .00 .00 .00 .DO (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 101 33 37 30 43 98 111 160 157 162 203 176 225 231 262 295 0 2324 (1) 4.35 1. 42 1. 59 1. 29 1. 85 4.22 4.78 6.88 6. 76 6.97 8.73 7.57 9.68 9. 94 11. 27 12. 69 .00 100.00 (2) 1.19 .39 .43 .35 .51 1.15 1. 30 1. 88 1. 84 1. 90 2.39 2.07 2. 64 2. 71 3.08 3.47 .00 27.31 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) 31

TABLE5F VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS F CLASS FREQUENCY (PERCENT) 12.23 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 1 0 0 0 0 1 2 0 0 1 1 2 0 1 1 0 0 10 (1) .10 .00 .00 .00 .00 .10 .19 .00 .00 .10 .10 .19 .00 .10 .10 .00 .00 .96 (2) .01 .00 .00 .00 .00 .01 .02 .00 .00 .01 .01 .02 .00 .01 .01 .00 .00 .12 C-3 15 7 11 15 7 20 18 37 63 105 231 170 96 57 33 27 0 912 (1) 1. 44 . 67 1. 06 1. 44 . 67 1. 92 1. 73 3.55 6.05 10.09 22.19 16.33 9.22 5.48 3.17 2.59 .00 87.61 (2) .18 .08 .13 .18 .08 .23 .21 .43 .74 1. 23 2. 71 2.00 1.13 . 67 .39 .32 .00 10. 72 4-7 1 0 1 0 1 4 6 6 6 8 14 11 17 8 10 24 0 117 (1) .10 .00 .10 .00 .10 .38 .58 .58 .58 .77 1. 34 1. 06 1. 63 .77 .96 2.31 .00 11. 24 (2) .01 .00 .01 .00 .01 .05 .07 .07 .07 .09 .16 .13 .20 .09 .12 .28 .00 1. 37 8-12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 (1) .00 .00 .00 .00 .00 .00 .oo .00 .00 .00 .00 .00 .00 .00 .00 .19 .00 .19 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .02 13-18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .oo .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .oo .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .oo .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 17 7 12 15 8 25 26 43 69 114 246 183 113 66 44 53 0 1041 (1) 1. 63 . 67 1.15 1. 44 .77 2.40 2.50 4.13 6.63 10.95 23.63 17.58 10.85 6.34 4.23 5.09 .00 100.00 (2) .20 .08 .14 .18 .09 .29 .31 .51 .81 1. 34 2.89 2.15 1. 33 .78 .52 . 62 .00 12.23

( 1) =PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) 32

TABLE5G VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS G CLASS FREQUENCY (PERCENT) = 3.97 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 0 0 1 0 0 1 0 0 1 0 0 0 0 0 0 3

( 1) .00 .00 .00 .00 .30 .00 .00 .30 .00 .00 .30 .00 .00 .00 .00 .00 .00 .89 (2) .00 .00 .00 .00 .01 .00 .00 .01 .00 .00 .01 .00 .00 .00 .00 .00 .00 .04 C-3 7 4 6 8 6 10 17 13 30 31 49 40 29 22 14 14 0 300 (1) 2.07 1.18 1. 78 2.37 1. 78 2.96 5.03 3.85 8.88 9.17 14.50 11.83 8.58 6.51 4.14 4 .14 .00 88.76 (2) .08 .05 .07 .09 .07 .12 .20 .15 .35 .36 .58 .47 .34 .26 .16 .16 .00 3.52 4-7 1 1 1 0 0 0 1 4 2 6 5 1 1 l_ 3 7 0 34 (1) .30 .30 .30 .00 .00 .00 .30 1.18 .59 1. 78 1. 48 .30 .30 .30 .89 2.07 .00 10.06 (2) .01 .01 .01 .00 .00 .00 .01 .05 .02 .07 .06 .01 .01 .01 .04 .08 .00 .40 8-12 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .30 .00 .00 .00 .00 .00 .00 .00 .30 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .01 13-18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 8 5 7 8 7 10 18 18 32 38 55 41 30 23 17 21 0 338 (1) 2.37 1. 48 2.07 2.37 2.07 2.96 5.33 5.33 9.47 11.24 16.27 12.13 8.88 6.80 5.03 6.21 .00 100.00 (2) .09 .06 .08 .09 .08 .12 .21 .21 .38 .45 . 65 . 48 .35 .27 .20 .25 .00 3.97 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) 33

TABLE5H VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS ALL CLASS FREQUENCY (PERCENT) = 100.00 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 3 3 4 2 6 3 6 5 4 2 7 9 4 5 2 0 0 65 (1) .04 .04 .05 .02 .07 .04 .07 .06 .05 .02 .08 .11 .05 .06 .02 .00 .OD .76 (2) .04 .04 .05 .02 .07 .04 .07 .06 .05 .02 .08 .11 .05 .06 .02 .00 .00 . 76 C-3 186 102 107 105 124 191 189 233 267 318 488 367 289 260 230 229 0 3685 (1) 2.19 1.20 1. 26 1.23 1. 46 2.24 2.22 2.74 3.14 3.74 5.73 4.31 3.40 3.05 2.70 2.69 .00 43.30 (2) 2.19 1. 20 1. 26 1.23 1. 46 2.24 2.22 2.74 3.14 3.74 5.73 4.31 3.40 3.05 2.70 2.69 .00 43.30 4-7 207 62 41 40 109 196 345 306 160 50 70 89 162 167 366 524 0 2894 (1) 2.43 .73 . 48 .47 1. 28 2.30 4.05 3.60 1. 88 .59 .82 1. 05 1. 90 1. 96 4.30 6.16 .00 34.00 (2) 2.43 .73 . 48 .47 1.28 2.30 4.05 3.60 1. 88 .59 .82 1. 05 1. 90 1. 96 4.30 6.16 .00 34.00 8-12 84 11 0 1 8 33 37 161 92 17 23 40 225 220 196 253 0 1401 (1) .99 .13 .00 .01 .09 .39 .43 1. 89 1. 08 .20 .27 .47 2. 64 2.58 2.30 2.97 .00 16. 46 (2) .99 .13 .00 .01 .09 .39 .43 1. 89 1. 08 .20 .27 .47 2. 64 2.58 2.30 2.97 .00 16. 46 13-18 7 1 0 0 0 0 4 23 18 1 2 6 94 109 92 51 0 408 (1) .08 .01 .00 .00 .00 .00 .05 .27 .21 .01 .02 .07 1.10 1.28 1. 08 .60 .00 4.79 (2) .08 .01 .00 .00 .00 .OD .05 .27 .21 .01 .02 .07 1.10 1.28 1. 08 .60 .OD 4.79 19-24 0 0 0 0 0 0 0 1 0 0 0 0 13 14 16 10 0 54 (1) .00 .00 .00 .00 .00 .00 .00 .01 .OD .00 .00 .00 .15 .16 .19 .12 .00 . 63 (2) .OD .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .DO .15 .16 .19 .12 .00 . 63 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 2 0 4 (1) .OD .00 .00 .00 .00 .00 .00 .00 .00 .00 .OD .00 .01 .00 .01 .02 .00 .05 (2) .00 .DO .00 .00 .00 .00 .OD .00 .oo .00 .00 .00 .01 .00 .01 .02 .00 .05 ALL SPEEDS 487 179 152 148 247 423 581 729 541 388 590 511 788 775 903 1069 0 8511 (1) 5. 72 2.10 1. 79 1. 74 2.90 4.97 6.83 8.57 6.36 4. 56 6.93 6.00 9.26 9.11 10.61 12.56 .00 100.00 (2) 5. 72 2.10 1. 79 1. 74 2.90 4.97 6.83 8.57 6.36 4. 56 6.93 6.00 9.26 9.11 10.61 12.56 .00 100.00 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO . 95 MPH) 34

TABLE6A VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS A CLASS FREQUENCY (PERCENT) = .16 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 (1) .00 .00 .00 .00 .00 .00 7.14 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 7.14 (2) .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 4-7 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 (1) 7.14 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 7.14 (2) .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 8-12 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 4 (1) 7.14 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 21.43 .00 28.57 (2) .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .04 .00 .05 13-18 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 3 (1) 7.14 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 14.29 .00 21. 43 (2) .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .04 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 4

( 1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 28.57 .00 28.57 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .05 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1

( 1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 7.14 .00 7 .14 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .01 ALL SPEEDS 3 0 0 0 0 0 1 0 0 0 0 0 0 0 0 10 0 14

( 1) 21. 43 .00 .00 .00 .00 .00 7.14 .00 .00 .00 .00 .00 .00 .00 .00 71.43 .00 100.00 (2) .04 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .12 .00 .16 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO . 95 MPH) 35

TABLE6B VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS B CLASS FREQUENCY (PERCENT) = .74 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 1 0 0 0 0 1 2 0 0 0 0 0 0 0 0 0 0 4 (1) 1. 59 .00 .00 .00 .00 1. 59 3.17 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 6.35 (2) .01 .00 .00 .00 .00 .01 .02 .00 .00 .00 .00 .00 .00 .00 .OD .00 .00 .05 4-7 0 0 0 0 0 3 1 0 0 0 0 0 0 0 0 3 0 7 (1) .OD .00 .00 .00 .00 4. 76 1. 59 .00 .00 .00 .00 .00 .00 .00 .00 4.76 .00 11.11 (2) .00 .00 .00 .00 .00 .04 .01 .00 .00 .DO .00 .00 .00 .00 .OD .04 .00 .08 8-12 3 0 1 1 0 1 5 0 0 0 0 0 0 1 0 8 0 20 (1) 4.76 .00 1. 59 1. 59 .00 1. 59 7.94 .00 .00 .00 .00 .DO .00 1. 59 .00 12.70 .00 31. 75 (2) .04 .DO .01 .01 .00 .01 .06 .00 .00 .00 .DO .00 .00 .01 .00 .09 .00 .23 13-18 2 1 0 0 0 0 0 0 0 0 0 0 2 1 2 5 0 13 (1) 3.17 1. 59 .00 .00 .00 .00 .00 .00 .OD .DO .00 .00 3.17 1. 59 3.17 7.94 .00 20.63 (2) . 02 .01 .00 .OD .00 .00 .00 .OD .00 .00 .00 .00 .02 .01 .02 .06 .00 .15 19-24 0 0 0 0 0 0 0 0 0 0 0 0 3 0 3 9 0 15 (1) .00 .00 .00 .00 .OD .DO .00 .00 .00 .00 .00 .00 4. 76 .00 4.76 14.29 .00 23.81 (2) .DO .00 .00 .00 .DO .00 .00 .00 .DO .DO .00 .00 .04 .DO .04 .11 .00 .18 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 0 4 (1) .00 .00 .00 .00 .00 .00 .00 .DO .00 .00 .00 .DO .DO .00 1. 59 4.76 .00 6.35 (2) .00 .OD .00 .00 .00 .00 .00 .00 .OD .00 .00 .00 .00 .00 .01 .04 .00 .05 ALL SPEEDS 6 1 1 1 0 5 8 0 0 0 0 0 5 2 6 28 0 63 (1) 9.52 1. 59 1. 59 1. 59 .00 7.94 12.70 .00 .00 .OD .DO .00 7.94 3.17 9.52 44.44 .00 100.00 (2) .07 .01 .01 .01 .00 .06 .09 .00 .00 .00 .00 .00 .06 .02 .07 .33 .00 .74 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) 36

TABLE6C VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS C CLASS FREQUENCY (PERCENT) = 2.06 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .DO .00 .00 .00 .00 .00 .00 .00 .DO .00 .00 .00 .00 .00 .DO .00 .00 .00 (2) .00 .DO .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 2 1 0 1 0 1 0 1 0 0 0 0 0 1 1 0 0 8 (1) 1.14 .57 .DO .57 .00 .57 .00 .57 .00 .00 .00 .DO .00 .57 .57 .00 .00 4.57 (2) .02 .01 .00 .01 .00 .01 .00 .01 .00 .00 .00 .DO .00 .01 .01 .DO .00 .09 4-7 3 5 2 1 4 11 6 1 0 0 0 0 1 0 4 7 0 45 (1) 1. 71 2.86 1.14 .57 2.29 6.29 3.43 .57 .00 .00 .00 .DO .57 .00 2.29 4.00 .00 25.71 (2) .04 .06 .02 .01 . 05 .13 .07 .01 .00 .00 .00 .00 .01 .00 .05 .08 .00 .53 8-12 6 1 2 2 1 6 8 9 2 1 0 0 0 3 4 15 0 60 (1) 3.43 .57 1.14 1.14 .57 3.43 4.57 5.14 1.14 .57 .00 .00 .DO 1. 71 2.29 8.57 .00 34.29 (2) .07 .01 .02 .02 .01 .07 .09 .11 .02 .01 .00 .00 .00 .04 .05 .18 .DO .70 13-18 9 2 0 0 0 0 0 4 2 0 0 0 6 3 6 9 0 41 (1) 5.14 1.14 .00 .00 .00 .DO .00 2.29 1.14 .00 .DO .00 3.43 1. 71 3.43 5.14 .00 23.43 (2) .11 .02 .00 .00 .00 .00 .00 .05 .02 .00 .00 .00 .07 .04 .07 .11 .00 .48 19-24 0 0 0 0 0 0 0 1 1 0 0 0 4 5 2 5 0 18 (1) .00 .00 .00 .00 .00 .00 .00 .57 .57 .00 .00 .DO 2.29 2.86 1.14 2.86 .00 10.29 (2) .00 .00 .00 .00 .00 .00 .00 .01 .01 .00 .DO .00 .05 .06 .02 .06 .00 .21 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 3 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .DO .00 .57 .00 .57 .57 .00 1. 71 (2) .00 .00 .00 .00 .00 .00 .DO .00 .00 .00 .00 .00 .01 .00 .01 .01 .00 .04 ALL SPEEDS 20 9 4 4 5 18 14 16 5 1 0 0 12 12 18 37 0 175 (1) 11. 43 5.14 2.29 2.29 2.86 10.29 8.00 9.14 2. 86 .57 .00 .00 6. 86 6.86 10.29 21.14 .00 100.00 (2)* .23 .11 .05 .05 .06 .21 .16 .19 .06 .01 .00 .00 .14 .14 .21 .43 .00 2.06 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) 37

TABLE6D VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS D CLASS FREQUENCY (PERCENT) = 48.14 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 0 0 0 2 1 1 0 0 0 0 1 0 0 0 0 5 (1) .00 .00 .00 .00 . 00 .05 .02 .02 .00 .00 .00 .00 .02 .00 .00 .00 .00 .12 (2) .00 .00 .00 .00 .00 .02 .01 .01 .00 .00 .00 .00 .01 .00 .00 .00 .00 .06 C-3 49 32 16 33 57 44 77 32 18 12 10 10 8 15 23 58 0 494 (1) 1. 20 .78 .39 .81 1. 39 1. 07 1. 88 .78 . 44 .29 .24 .24 .20 .37 .56 1. 42 .00 12.06 (2) .58 .38 .19 .39 . 67 .52 . 90 .38 .21 .14 .12 .12 .09 .18 .27 .68 .00 5.80 4-7 79 37 26 27 57 110 221 155 65 21 8 20 20 37 64 203 0 1150 (1) 1. 93 .90 . 63 .66 1. 39 2. 68 5.39 3.78 1. 59 .51 .20 .49 .49 .90 1. 56 4.95 .00 28.07 (2) .93 . 43 .31 .32 . 67 1.29 2.60 1. 82 .76 .25 .09 .23 .23 .43 .75 2.39 .00 13.51 8-12 105 30 19 3 13 39 100 182 164 31 27 34 115 121 80 257 0 1320 (1) 2.56 .73 .46 .07 .32 .95 2.44 4.44 4.00 .76 .66 .83 2.81 2.95 1. 95 6.27 .00 32.22 (2) 1.23 .35 .22 .04 .15 .46 1.17 2.14 1. 93 .36 .32 .40 1. 35 1. 42 .94 3.02 .00 15.51 13-18 57 7 3 0 2 6 9 33 109 7 16 29 122 167 106 167 0 840 (1) 1. 39 .17 .07 .00 .05 .15 .22 .81 2.66 .17 .39 . 71 2.98 4.08 2.59 4.08 .00 20.50 (2) .67 .08 .04 .00 .02 .07 .11 .39 1.28 .08 .19 .34 1. 43 1. 96 1. 25 1. 96 .00 9.87 19-24 7 1 0 0 0 1 0 7 24 0 1 3 28 62 41 59 0 234 (1) .17 .02 .00 .00 .00 .02 .00 .17 .59 .00 .02 .07 .68 1. 51 1. 00 1. 44 .00 5. 71 (2) .08 .01 .00 .00 .00 .01 .00 .08 .28 .00 .01 .04 .33 .73 .48 .69 .00 2.75 GT 24 0 0 0 0 0 0 0 1 0 0 0 0 8 6 7 32 0 54 (1) .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00 .00 .20 .15 .17 .78 .00 1. 32 (2) .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .09 .07 .08 .38 .00 . 63 ALL SPEEDS 297 107 64 63 129 202 408 411 380 71 62 96 302 408 321 776 0 4097 (1) 7.25 2.61 1.56 1. 54 3.15 4.93 9.96 10.03 9.28 1. 73 1. 51 2.34 7.37 9. 96 7.84 18.94 .00 100.00 (2) 3. 49 1.26 .75 . 74 1. 52 2.37 4.79 4.83 4.46 .83 .73 1.13 3.55 4.79 3.77 9.12 .00 48.14 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) 38

TABLE6E VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS E CLASS FREQUENCY (PERCENT} = 35.82 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 1 0 2 2 1 4 2 0 0 0 0 1 1 1 0 0 15 (1) .00 .03 .00 .-07 .07 .03 .13 .07 .oo .00 .00 .00 .03 .03 .03 .00 .00 .49 (2) .00 .01 .00 .02 .02 .01 .05 .02 .00 .00 .00 .00 .01 .01 .01 .00 .00 .18 C-3 110 60 50 51 71 130 107 76 26 18 17 7 12 18 43 94 0 890

( 1) 3.61 1. 97 1. 64 1. 67 2.33 4 .26 3.51 2.49 .85 .59 .56 .23 .39 .59 1. 41 3.08 .00 29.19 (2) 1. 29 .70 .59 . 60 .83 1. 53 1.26 .89 .31 .21 .20 .08 .14 .21 .51 1.10 .00 10.46 4-7 104 28 8 7 15 61 165 127 57 20 17 16 24 25 67 317 0 1058

( 1) 3.41 .92 .26 .23 .49 2.00 5.41 4.17 1. 87 .66 .56 .52 .79 .82 2.20 10.40 .00 34.70 (2) 1. 22 .33 .09 .08 .18 . 72 1. 94 1. 49 . 67 .23 .20 .19 .28 .29 .79 3. 72 .00 12.43 8-12 54 10 0 0 0 1 40 97 72 27 11 29 67 46 75 232 0 761 (1) 1. 77 .33 .00 .00 .00 .03 1. 31 3.18 2. 36 .89 .36 .95 2.20 1. 51 2. 46 7.61 .00 24.96 (2) .63 .12 .00 .00 .00 .01 .47 1.14 .85 .32 .13 .34 .79 .54 .88 2.73 .00 8.94 13-18 14 0 0 1 0 3 5 10 44 11 1 4 33 32 28 85 0 271 (1) .46 .00 .00 .03 .00 .10 .16 .33 1. 44 .36 .03 .13 1. 08 1. 05 .92 2.79 .00 8.89 (2) .16 .00 .00 .01 .00 .04 .06 .12 .52 .13 .01 .05 .39 .38 .33 1. 00 .00 3.18 19-24 3 0 0 0 0 1 1 8 7 1 0 0 6 3 4 5 0 39

( 1) .10 .00 .00 .00 .00 .03 .03 .26 .23 .03 .00 .00 .20 .10 .13 .16 .00 1.28 (2) .04 .00 .00 .00 .00 .01 .01 .09 .08 .01 .00 .00 .07 .04 .05 .06 .00 .46 GT 24 0 0 0 0 0 0 1 2 2 0 0 0 3 0 0 7 0 15 (1) .00 .00 .00 .00 .00 .00 .03 .07 .07 .00 .00 .00 .10 .00 .00 .23 .00 .49 (2) .00 .00 .00 .00 .00 .00 .01 .02 .02 .00 .00 .00 .04 .00 .00 .08 .00 .18 ALL SPEEDS 285 99 58 61 88 197 323 322 208 77 46 56 146 125 218 740 0 3049 (1) 9.35 3.25 1. 90 2.00 2.89 6.46 10.59 10.56 6.82 2.53 1. 51 1. 84 4.79 4.10 7.15 24.27 .00 100.00 (2) 3.35 1.16 . 68 . 72 1. 03 2.31 3.80 3.78 2.44 .90 .54 .66 1. 72 1. 47 2.56 8.69 .00 35.82 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) 39

TABLE6F VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS F CLASS FREQUENCY (PERCENT) 10.96 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 1 0 0 0 2 2 0 1 0 1 0 1 0 0 0 8 (1) .00 .00 .11 .00 .00 .00 .21 .21 .00 .11 .00 .11 .00 .11 .00 .00 .00 .86 (2) .00 .00 .01 .00 .00 .00 .02 .02 .00 .01 .00 .01 .00 .01 .00 .00 .00 .09 C-3 46 25 23 21 16 26 32 41 21 11 10 5 10 15 25 26 0 353 (1) 4.93 2. 68 2.47 2.25 1. 71 2.79 3.43 4.39 2.25 1.18 1. 07 .54 1. 07 1. 61 2. 68 2.79 .00 37.83 (2) .54 .29 .27 .25 .19 .31 .38 .48 .25 .13 .12 .06 .12 .18 .29 .31 .00 4.15 4-7 33 3 1 2 14 29 54 53 29 11 11 10 11 10 27 81 0 379 (1) 3.54 .32 .11 .21 1. 50 3.11 5.79 5.68 3.11 1.18 1.18 1. 07 1.18 1. 07 2.89 8.68 .00 40.62 (2) .39 .04 .01 .02 .16 .34 . 63 . 62 .34 .13 .13 .12 .13 .12 .32 .95 .00 4.45 8-12 8 0 0 0 0 3 23 19 13 7 8 3 14 11 18 53 0 180 (1) .86 .00 .00 .00 .00 .32 2.47 2.04 1. 39 .75 .86 .32 1. 50 1.18 1. 93 5.68 .00 19.29 (2) .09 .00 .00 .00 .00 .04 .27 .22 .15 .08 .09 .04 .16 .13 .21 . 62 .00 2.11 13-18 3 0 0 0 0 0 1 0 2 1 0 0 2 0 1 3 0 13 (1) .32 .00 .00 .00 .00 .00 .11 .00 .21 .11 .00 .00 .21 .00 .11 .32 .00 1. 39 (2) .04 .00 .00 .00 .00 .00 .01 .00 .02 .01 .00 .00 .02 .00 .01 .04 .00 .15 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .. 00 .00 .00 .00 .00 .00 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 90 28 25 23 30 58 112 115* 65 31 29 19 37 37 71 163 0 933 (1) 9.65 3.00 2.68 2.47 3.22 6.22 12.00 12.33 6.97 3.32 3.11 2.04 3.97 3.97 7.61 17.47 .00 100.00 (2) 1. 06 .33 .29 .27 .35 .68 1. 32 1. 35 .76 .36 .34 .22 .43 .43 .83 1. 92 .00 10.96 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) 40

TABLE6G VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS G CLASS FREQUENCY (PERCENT) = 2.11 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 (1) .00 .00 .00 .00 .00 .56 .00 .00 .oo .00 .00 .00 .00 .00 .00 .00 .. 00 .56 (2) .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 C-3 3 2 3 0 0 4 7 5 .4 5 4 3 3 3 2 5 0 53 (1) 1. 67 1.11 1. 67 .00 .00 2.22 3.89 2.78 2.22 2.78 2.22 1. 67 1. 67 1. 67 1.11 2.78 .00 29.44 (2) .04 .02 .04 .00 .00 .05 .08 .06 .05 .06 .05 .04 .04 .04 .02 .06 .00 . 62 4-7 2 1 0 1 2 9 14 9 2 3 3 5 9 12 5 6 0 83 (1) 1.11 .56 .00 .56 1.11 5.00 7.78 5.00 1.11 1. 67 1. 67 2.78 5.00 6.67 2.78 3.33 .00 46.11 (2) .02 .01 .00 .01 .02 .11 .16 .11 .02 .04 .04 .06 .11 .14 .06 .07 .00 .98 8-12 0 0 0 0 0 0 6 4 7 1 2 2 4 6 3 5 0 40 (1) .00 .00 .00 .00 .00 .00 3.33 2.22 3.89 .56 1.11 1.11 2.22 3.33 1. 67 2.78 .00 22.22 (2) .00 .00 .00 .00 .00 .00 .07 .05 .08 .01 .02 .02 .05 .07 .04 .06 .00 .47 13-18 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1 0 3 (1) .00 .00 .00 .00 .00 .00 .00 .00 .oo .56 .00 .00 .00 .00 .56 .56 .00 1. 67 (2) .00 .00 .00 .DO .00 .00 .00 .00 .00 .01 .DO .00 .00 .00 .01 .01 .00 .04 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .DO .oo .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .DO .00 .00 .oo .00 .00 .00 .00 .00 .00 .DO .00 .00 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .DO .oo .00 .00 .00 .00 .00 .00 .00 .DO .00 (2) .00 .DO .00 .00 .00 .00 .00 .DO .oo .00 .00 .00 .00 .00 .00 .00 .00 .DO ALL SPEEDS 5 3 3 1 2 14 27 18 .13 10 9 10 16 21 11 17 0 180 (1) 2.78 1. 67 1. 67 .56 1.11 7.78 15.00 10.00 7 .*2.2 5.56 5.00 5.56 8.89 11.67 6.11 9.44 .00 100.00 (2) .06 .04 .04 .01 .02 .16 .32 .21 .15 .12 .11 .12 .19 .25 .13 .20 .00 2.11 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO . 95 MPH) 41

TABLE6H VERMONT YANKEE JAN 17 - DEC 17 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297. 0 FT WIND DATA STABILITY CLASS ALL CLASS FREQUENCY (PERCENT) 100.00 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE s SSW SW WSW w WNW NW NNW VRBL TOTAL MPH CALM 0 1 1 2 2 4 7 5 0 1 0 1 2 2 1 0 0 29 (1) .00 .01 .01 .02 .02 .05 .08 .06 .00 .01 .00 .01 .02 .02 .01 .00 .00 .34 (2) .00 .01 .01 .02 .02 .05 .08 .06 .00 .01 .00 .01 .02 .02 .01 .00 .00 .34 C-3 211 120 92 106 144 206 226 155 69 46 41 25 33 52 94 183 0 1803 (1) 2.48 1. 41 1. 08 1.25 1. 69 2.42 2.66 1. 82 .81 .54 .48 .29 .39 . 61 1.10 2.15 .00 21.18 (2) 2.48 1. 41 1. 08 1.25 1. 69 2.42 2.66 1. 82 .81 .54 .48 .29 .39 . 61 1.10 2.15 .00 21.18 4-7 222 74 37 38 92 223 461 345 153 55 39 51 65 84 167 617 0 2723 (1) 2.61 .87 . 43 .45 1. 08 2. 62 5.42 4.05 1. 80 . 65 .46 . 60 .76 .99 1. 96 7.25 .00 31. 99 (2) 2.61 .87 .43 .45 1. 08 2. 62 5.42 4.05 1. 80 . 65 .46 . 60 . 76 .99 1. 96 7.25 .00 31. 99 8-12 177 41 22 6 14 50 182 311 258 67 48 68 200 188 180 573 0 2385 (1) 2.08 .48 .26 .07 .16 .59 2.14 3. 65 3.03 .79 .56 .80 2.35 2.21 2.11 6.73 .00 28.02 (2) 2.08 .48 .26 .07 .16 .59 2.14 3. 65 3.03 .79 .56 .BO 2.35 2.21 2.11 6.73 .00 28.02 13-18 86 10 3 1 2 9 15 47 157 20 17 33 165 203 144 272 0 1184 (1) 1. 01 .12 .04 .01 .02 .11 .18 .55 1. 84 .23 .20 .39 1. 94 2.39 1. 69 3.20 .00 13. 91 (2) 1. 01 .12 .04 .01 .02 .11 .18 .55 1. 84 .23 .20 .39 1. 94 2.39 1. 69 3.20 .00 13.91 19-24 10 1 0 0 0 2 1 16 32 1 1 3 41 70 50 82 0 310 (1) .12 .01 .00 .00 .00 .02 .01 .19 .38 .01 .01 .04 .48 .82 .59 .96 .00 3.64 (2) .12 .01 .00 .00 .00 .02 .01 .19 .38 .01 .01 .04 .48 .82 .59 .96 .00 3.64 GT 24 0 0 0 0 0 0 1 3 2 0 0 0 12 6 9 44 0 77 (1) .00 .00 .00 .00 .00 .00 .01 .04 .02 .00 .00 .00 .14 .07 .11 .52 .00 .90 (2) .00 .00 .00 .00 .00 .00 .01 .04 .02 .00 .00 .00 .14 .07 .11 .52 .00 .90 ALL SPEEDS 706 247 155 153 254 494 893 882 671 190 146 181 518 605 645 1771 0 8511 (1) 8.30 2.90 1. 82 1. 80 2.98 5.80 10.49 10.36 7.88 2.23 1. 72 2.13 6.09 7 .11 7.58 20.81 .00 100.00 (2) 8.30 2.90 1. 82 1. 80 2.98 5.80 10.49 10.36 7.88 2.23 1. 72 2.13 6.09 7 .11 7.58 20.81 .00 100.00 (l)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)=PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO . 95 MPH) 42

APPENDIX A SUPPLEMENTAL INFORMATION Facility: Vermont Yankee Nuclear Power Station Licensee: Entergy Nuclear Vermont Yankee lA. ODCM DOSE AND DOSE RATE LIMITS -

ODCM Controls Dose Limit

a. Noble Gases 3/4.3.l Total body dose rate 500 mrem/yr 3/4.3.1 Skin dose rate 3000 mrem/yr 3/4.3.2 Gamma air dose 5 mrad in a quarter 3/4.3.2 Gamma air dose 10 mrad in a year 3/4.3.2 Beta air dose 10 mrad in a quarter 3/4.3.2 Beta air dose 20 mrad in a year

b. Tritium and Radionuclides in Particulate Form 3/4.3.1 Organ dose rate 1500 mrem/yr 3/4.3 .3 Organ dose 7 .5 mrem in a quarter 3/4.3.3 Organ dose 15 mrem in a year C. Liquids 3/4.2.2 Total body dose 1.5 mrem in a quarter 3/4.2.2 Total body dose 3 mrem in a year 3/4.2.2 Organ dose 5 mrem in a quarter 3/4.2.2 Organ dose 10 mrem in a year 2A. ODCM LIMITS-CONCENTRATION ODCM Control Limit

a. Noble Gases No ECL Limits

b. Tritium and Radionuclides in Particulate Form No ECL Limits A-1

C. Liquids 3/4.2.1 Sum of the fractions ofECL excluding noble gases (1 OCFR20, Appendix B, Table 2, Column 2): ::: l.OE+Ol 3/4.2.1 Total noble gas concentration: ::: 2E-04 µCi/cc

3. AVERAGE ENERGY Provided below are the average energy (E) of the radionuclide mixture in releases of fission and activation gases, if applicable.

a. Average gamma energy: Not Applicable

b. Average beta energy: Not Applicable

4. MEASUREMENTS AND APPROXIMATIONS OF TOTAL RADIOACTIVITY Provided below are the methods used to measure or approximate the total radioactivity in effluents and the methods used to determine radionuclide composition ..

a. Fission and Activation Gases Continuous stack monitors monitor the gross Noble Gas radioactivity released from the plant stack. Because release rates are normally below the detection limit of these monitors, periodic grab samples are taken and analyzed for the gaseous isotopes present. These are used to calculate the individual isotopic releases indicated in Table lB and the totals of Table IA. The error involved in these steps may be approximately +/-23 percent.

b. Particulates Continuous isokinetic samples are drawn from the plant stack through a particulate filter. The filters are normally removed weekly and are analyzed for particulates. The error involved in these steps may be approximately

+/-18 percent.

A-2

c. Tritium ODCM Table 4.3.l requires as a minimum that grab samples from the plant stack be taken monthly and analyzed for tritium. The stack tritium collection has been upgraded with silica gel columns and continuous sampling of stack effluents. The error involved in this sample is approximately +/-18 percent.

d. Liquid Effluents If radioactive liquid effluents are to be released from the facility, they are continuously monitored. Measurements are also required on a representative sample of each batch of radioactive liquid effluents released. For each batch, station records are retained of the total activity (mCi) released, concentration

(µCi/ml) of gross radioactivity, volume (liters), and approximate total quantity of water (liters) used to dilute the liquid effluent prior to release to the Connecticut River.

Each batch of radioactive liquid effluents to be released is analyzed for gross gamma and gamma isotopic radioactivity. A monthly proportional composite sample, comprising an aliquot of each batch released during a month, is analyzed for tritium and gross alpha radioactivity. A quarterly proportional composite sample, comprising an aliquot of each batch released during a quarter, is analyzed for Sr-89, Sr-90, and Fe-55.

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5. BATCH RELEASES

a. Liquid There were no routine liquid batch releases during the reporting period.

b. Gaseous There were no routine gaseous batch releases during the reporting period.

6. ABNORMAL RELEASES

a. Liquid

1) In 2017 there was a continuous release due to the residual radioactivity in groundwater from a previously undetected leak from a subsurface structure.

The leak condition was identified through monitoring well data in January 2010. The leak was stopped in February 2010.

2) For 2017, the total Tritium radioactivity conservatively estimated to be released to the Connecticut River is 0.0221 Curies. No other plant-related radionuclides were detected in ground water.

3) During the NEI 5-year self-assessment for groundwater monitoring, it was determined that VY was not fully meeting the intent of reporting groundwater contamination results in annual reports. VY has consistently reported the curies of all liquid and gaseous effluents from the plant through regularly monitored discharge pathways as well as from the tritium leak of 2010. The reporting of individual well results or trends has not been a part of the annual report and this was entered into the Corrective Actions Program as WT-WTVTY-2016-00018 CA-00009 to ensure inclusion in 2016 and future reports.

VY has installed 32 groundwater wells to monitor the 2010 leak event or to monitor additional at-risk structures, systems or components (SSCs) that could cause a release of licensed material to the groundwater. One well (GZ-08) has been dry since installation and no samples were collected from it in 2017. A second well, GZ-24, was compromised by excavation activity in 2014 and is no longer able to be sampled. A summary of the remaining 30 wells is included in Table A-1. There are only six (6) wells that have detectable activity (>MDC) in 2017 and all of these wells are well below the EPA limit of 20,000 pCi/L for drinking water. None of the wells in this program supply drinking water, and no drinking water wells on-site or adjacent to VY have shown tritium at detectable levels in regular surveillance samples.

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T abl e A -1 VY G roun dwa ter T ri'fmm S ummary- 2017 1

Number of Concentration Range Groundwater analyses Mean well Sampled performed Concentration1 Min Max GZ-01 1 < 587 < 587 < 587 GZ-02 1 < 584 < 584 < 584 GZ-03 2 <652 < 640 < 664 GZ-04 2 <619 < 618 < 620 GZ-05 1 <632 < 632 < 632 GZ-06 2 < 597 < 582 < 611 GZ-07 2 < 594 < 577 < 610 GZ-09 1 < 580 < 580 < 580 GZ-10 1 < 579 < 579 < 579 GZ-11 2 <600 < 583 < 616 GZ-12 2 < 598 < 585 < 610 GZ-12D 4 755 < 595 959 GZ-13 1 < 581 < 581 < 581 GZ-13D 2 < 597 < 585 < 609 GZ-14 4 838 < 599 1102 GZ-14D - 4 5074 4112 5474 GZ-15 4 2067 < 574 4664 GZ-16 1 < 598 < 598 < 598 GZ-17 1 < 581 < 581 < 581 GZ-18 1 < 581 < 581 < 581 GZ-18D 1 < 582 < 582 < 582 GZ-19 1 <577 < 577 < 577 GZ-19D 1 < 576 < 576 < 576 GZ-20 1 <579 < 579 < 579 GZ-21 2 <597 < 586 < 608 GZ-22D 12 3351 2766 3886 GZ-23 12 1444 < 596 2322 GZ-25 2 < 583 < 580 < 585 GZ-26 2 < 583 < 582 < 583 GZ-27 2 < 582 < 580 < 584 1

All concentrations are in units ofpCi/L.

Required LLD for tritium = 2,000 pCi/L.

"<" denotes minimum detectable value for the analytical period.

Bold values denote positive results (greater than minimum detectable values).

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b. Gaseous There were no non-routine gaseous releases (measured) during the reporting period.

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APPENDIXB LIQUID HOLDUP TANKS Requirement Technical Specification 3. l .A.1 limits the quantity of radioactive material contained in any outside tank. With the quantity of radioactive material in any outside tank exceeding the limits of Technical Specification 3.1.A.1, a description of the events leading to this condition is required in the next annual Radioactive Effluent Release Report per ODCM Section 10.1.

Response: The limits of Technical Specification 3.1.A.1 were not exceeded during this reporting period.

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APPENDIXC RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION Requirement: Radioactive liquid effluent monitoring instrumentation channels are required to be functional in accordance with ODCM Table 3.1.1. If a non-functional radioactive liquid effluent monitoring instrument is not returned to functional status prior to a release pursuant to Note 4 of Table 3.1.1, an explanation in the next annual Radioactive Effluent Release Report of the reason(s) for delay in correcting the non-functionality are required per ODCM Section 10.1.

Response: Since the requirements of ODCM Table 3.1.1 governing the operability of radioactive liquid effluent monitoring instrumentation were met for this reporting period, no response is required.

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APPENDIXD RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION Requirement: Radioactive gaseous effluent monitoring instrumentation channels are required to be functional in accordance with ODCM Table 3.1.2. If a non-functional, gaseous effluent monitoring instrumentation is not returned to functional status within 30 days pursuant to Note 5 of Table 3.1.2, an explanation in the next annual Radioactive Effluent Release Report of the reason(s) for the delay in correcting the inoperability is required per ODCM Section 10.1.

Response: Since the requirements of ODCM Table 3.1.2 governing the functionality of radioactive gaseous effluent monitoring instrumentation were met for this reporting period, no response is required.

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APPENDIXE RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Requirement: The radiological environmental monitoring program is conducted in accordance with ODCM Control 3/4.5.1. With samples no longer available from one or more of the sample locations required by ODCM Table 3.5.1, the ODCM requires the following to be included in the next annual Radioactive Effluent Release Report: (1) identify the cause(s) of the sample(s) no longer being available, (2) identify the new location(s) for obtaining available replacement samples and (3) include revised ODCM figure(s) and table(s) reflecting the new location(s).

Response: As part of Rev. 37 to the ODCM, milk sampling has been eliminated. These changes are supported by RSCS Technical Support Document (TSD)16-041 "Vermont Yankee Shut-Down Environmental Radionuclides of Concern and Off-Site Dose Calculation Manual Changes" and RSCS TSD 15-056 "Vermont Yankee Offsite Dose Calculation Manual (ODCM) Revisions for Decommissioning".

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APPENDIXF LAND USE CENSUS Requirement: A land use census is conducted in accordance with ODCM Control 3/4.5.2.

With a land use census identifying a location(s) that yields at least a 20 percent greater dose or dose commitment than the values currently being calculated pursuant to ODCM Control 4.3.3, the new location(s) must be identified in the next Annual Radioactive Effluent Release Report.

Response: The Land Use Census was completed during the third quarter of 2017. No locations were identified which yielded a 20 percent greater dose or dose commitment than the values currently being calculated pursuant to ODCM Control 4.3.3. See Table 4C for a listing of nearest residents and milk animals in the site area as determined in the 201 7 Land Use Census.

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APPENDIXG PROCESS CONTROL PROGRAM Requirement: ODCM Section 10.1 requires that licensee-initiated changes to the Process Control Program (PCP) be submitted to the Commission in the annual Radioactive Effluent Release Report for the period in which the change(s) was made.

Response: There were no changes made to the Process Control Program during this reporting period.

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APPENDIXH OFF-SITE DOSE CALCULATION MANUAL Requirement: Technical Specification 6.7.B.1 requires that licensee-initiated changes to the Off-Site Dose Calculation Manual (ODCM) be submitted to the Commission in the annual Radioactive Effluent Release Report for the period in which the change( s) was made effective.

Response: There was one revision (Rev. 38) to the Offsite Dose Calculation Manual (ODCM) during 2017. Revision 39 to the ODCM was issued on March 5,

'2018. The changes associated with Revision 38 and 39 are described below and the changes are presented in Attachment 1 to this Appendix.

Summary of changes made in ODCM Revision 38 (Effective 2/6/2017) (See )

The wording in Table 4.2.1 of the ODCM was changed from "Perimeter" wells to "Monitoring" wells in order to be consistent with the function of the well as defined in site procedures. Notations "i" and "j" were also added to Table 4.2.1 to provide basis for sampling intervals in Table 4.2.1.

Summary of changes made in ODCM Revision 39 (Effective 3/5/2018) (See )

The following changes were made as part of Revision 39 to the ODCM:

Liquid Radwaste Monitor and set points were deleted from Tables 1.1.1, 1.1. 7 and 4.1.1,

Definitions 7 (Liquid Waste Discharge) and 8 (Off-Site Dose Calculation Manual) in Table 2.1.1 were revised, o Definitions of dilution flow and discharge flow rates in Table 2.1.2 were revised and the set point and efficiency terms in Table 2.1.2 were deleted,

Liquid Radwaste Monitor and Flow Rate Measurement Devices and Notes 1 and 3 were deleted from Table 3.1.1,

Control 3/4.2.1 was revised to allow intercepted groundwater release through liquid waste effluent line,

Table 4.2.1 was revised to institute requirements for release without liquid radwaste monitor and Note (k) was added to Table 4.2.1 to implement Table 3.1.1 requirements for release without liquid radwaste monitor,

Section 3/4.6 Bases 3.1.1 was revised to pertain to flow rate meter and language on release frequency was deleted,

Section 3/4.6 Bases 3.2.1 was revised to allow intercepted groundwater release through liquid waste effluent line,

Cpi term in Section 5.1 was revised to remove names of SSCs to reflect SAFSTOR configuration,

Section 5.2.1 Sample Tank Pathways was revised to reflect SAFSTOR configuration, H-1

Section 5.2.4 Intercepted Groundwater Concentrations in Flowpaths to the Connecticut River was revised to allow intercepted groundwater release through liquid waste effluent line,

Section 8.1.1 Liquid Radwaste Discharge Monitor (RM-17-350) was deleted and

Section 9.1 and Figure 9-1 were revised to reflect SAFSTOR configuration.

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BVY 18-020, Submittal of 2017 Radioactive Effluent Release Report

Contents

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Dear Sir or Madam:

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1.0 INTRODUCTION

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BVY 18-020, Submittal of 2017 Radioactive Effluent Release Report

Text

SUBJECT:

Dear Sir or Madam:

Enclosure:

1.0 INTRODUCTION

1.0 INTRODUCTION

Reference:

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