Text

Vermont Yankee - 2008 Radioactive Effluent Release Report
	ML091460384
Person / Time
Site:	Vermont Yankee
Issue date:	05/14/2009
From:	Colomb M J; Entergy Nuclear Operations
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	BVY 09-037, FOIA/PA-2009-0209
	Download: ML091460384 (58)
	v • d • e

Entergy Nuclear Operations, Inc.Vermont Yankee P.O. Box 0250 320 Governor Hunt RoadýEnttergy Vernon, VT 05354 Tel 802 257 7711 Michael J. Colomb Site Vice President May 14, 2009 BVY 09-037 ATTN: Document Control Desk U.S."Nuclear Regulatory Commission Washington, D.C. 20555

Subject:

2008 Radioactive Effluent Release Report Vermont Yankee Nuclear Power Station Docket No. 50-271 License No. DPR-28

Dear Sir or Madam,

In accordance with Vermont Yankee (VY) Technical Specifications (TS) 6.6.D, attached is a copy of the annual 2008 Radioactive Effluent Release Report.In addition, VY TS 6.7.B requires reporting of changes to the Off-Site Dose Calculation Manual (ODCM). The changes made to the ODCM during 2008 as provided in Appendix H of the subject report.There are no new regulatory commitments being made in this submittal.

Should you have any questions concerning this submittal, please contact Mr. David J.Mannai at (802) 451-3304.Sincerely,[MJC/JTM]Attachment 1: Radioactive Effluent Release Report for 2008 Attachment 2: CD-ROM with Revisions 31 and 32 of the VY ODCM cc listing (next page)

BVY 09-037 Docket No. 50-271 Page 2 of 2 cc: Mr. Samuel J. Collins, Region 1 Administrator U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406-1415 Mr. James S. Kim, Project Manager U.S. Nuclear Regulatory Commission Mail Stop 08C2A Washington, DC 20555 USNRC Resident Inspector Entergy Nuclear Vermont Yankee, LLC 320 Governor Hunt Road Vernon, Vermont 05354 Mr. David O'Brien, Commissioner VT Department of Public Service 112 State Street -Drawer 20 Montpelier, VT 05620 Vermont Department of Health Division of Radiological Health Attn: Bill Irwin P.O. Box 70 Burlington, VT 05402-0070 Massachusetts Department of Public Health Radiation Control Program Attn: Bob Walker, Director Schrafft Center -Suite 1 M21 529 Main Street Charlestown, MA 02129 Docket No. 50-271 BVY 09-037 Attachment 1 Vermont Yankee Nuclear Power Station 2008 Radioactive Effluent Release Report RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2008 INCLUDING ANNUAL RADIOLOGICAL IMPACT ON MAN Entergy Nuclear Vermont Yankee, LLC Docket No. 50-271 License No. DPR-28 Prepared by_Jo-Ann Pelczar, Rad.ng., AREVA NP Date Preparation coordinated by: Stephen P. Skibnio sk, enor Envtonmental Spe alist ate Reviewed by: / I, 9fte-phen C. McAvoy, Chemistr pervisor Date- -Approved for Distribution:

(4 , , r / Si -?-20Q Jeffery A. Igardy, Chem. Supt. Date TABLE OF CONTENTS Page 1.0 IN T R O D U C T IO N ........................................................................................................................................

1 2.0 M ETEO R O LO G IC A L D A TA ......................................................................................................................

2 3.0 D O SE A SSE S SM E N T .................................................................................................................................

3 3.1 DOSES FROM LIQUID EFFLUENTS

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3 3.2 D O SES FROM N OBLE G A SES ....................................................................................

1 .................................

3 3.3 DOSES FROM IODINE-131, IODINE-133, TRITIUM, AND RADIONUCLIDES IN PARTICULATE FORM WITH HALF-LIVES GREATER THAN 8 DAYS ..............................................................................................

3 3.4 WHOLE-BODY DOSES IN UNRESTRICTED AREAS FROM DIRECT RADIATION

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4 3.5 DOSES FROM ON-SITE DISPOSAL OF SEPTIC WASTE AND COOLING TOWER SILT .............................

5 3.6 ON-SITE RECREATIONAL ACTIVITIES

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5 R E F E R E N C E S ..........................................................................................................................................................

6 APPENDIX A -SUPPLEMENTAL INFORMATION

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A-1 APPENDIX B -LIQUID HOLDUP TANKS ....................................................................................................

B-i APPENDIX C -RADIOACTIVE LIQUID EFFLUENT MONITORING IN ST R U M EN T A T IO N ...............................................................................................................

C -1 APPENDIX D -RADIOACTIVE GASEOUS EFFLUENT MONITORING IN ST R U M EN T A TIO N .........................................................................................

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D -I APPENDIX E -RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM .................................

E-1 A PPEN D IX F -LA N D U SE C EN SU S ..................................................................................................................

F-I APPENDIX G -PROCESS CONTROL PROGRAM ........................................................................................

G-1 APPENDIX H -OFF-SITE DOSE CALCULATION MANUAL ....................................................................

H-1 APPENDIX I -RADIOACTIVE LIQUID, GASEOUS AND SOLID WASTE TREATM EN T SY STEM S ...................................................................................................

I-1 APPENDIX J -ON-SITE DISPOSAL OF SEPTIC/SILT/SOIL WASTE ........................................................

J-1 ii LIST OF TABLES Number Title Page IA 2008 Gaseous Effluents

-Summation of All Releases 7 lB 2008 Gaseous Effluents

-Elevated Releases 9 1C 2008 Gaseous Effluents

-Ground Level Releases 11 1 D Gaseous Effluents

-Non-routine Releases 13 2A Liquid Effluents

-Summation of All Releases 14 2B Liquid Effluents

-Non-routine Releases 15 3 2008 Solid Waste and Irradiated Fuel Shipments 16 4A Maximum Off-Site Doses/Dose Commitments to Members of the Public from 18 Liquid and Gaseous Effluents for 2008 (10CFR50, Appendix I)4B Maximum Annual Dose Commitments from Direct External Radiation, 19 Plus Liquid and Gaseous Effluents for 2008 (40CFR190) 4C Receptor Locations 20 4D Usage Factors for Gaseous Pathways 21 4E Environmental Parameters for Gaseous Effluents 22 5A to 5H Annual (2008) Summary of Lower Level Joint Frequency Distribution 24-31 6A to 6H Annual (2008) Summary of Upper Level Joint Frequency Distribution 32-39 iii Radiological Effluent Release Report for 2008[Including Annual Radiological Impact on Man]Entergy Nuclear Vermont Yankee, LLC

1.0 INTRODUCTION

Tables 1 through 3 lists 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 2008 in response to the ALARA objectives of 1OCFR50, 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 2008. Radioactive effluents reported in Tables 1 and 2 were used to determine the resulting doses for 2008.As required by ODCM Section 10.1, (Reference

1) 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). These dose estimates were made using a"Method II" analysis as described in the ODCM. 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. During this reporting period, no recreational activity was permitted and, therefore, there is no associated dose assessment as stated in Section 3.6.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 40CFR190, "Environmental Radiation Protection Standards for Nuclear Power Operations," are 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 assessments are required.

However, Table 4B does provide the combination of doses and dose commitments from plant effluents and direct radiation sources for the limiting member of the public off-site as a demonstration of compliance with the dose standards of 40CFR190.All calculated dose estimates for members of the public at the site boundary or beyond for the 2008 annual reporting period are below the dose criteria of 1OCFR Part 50, Appendix I, and 40CFR190.Appendices B through H indicate the status of reportable items per the requirements of ODCM Section 10.1.1 2.0 METEOROLOGICAL DATA Meteorological data were collected during this reporting period 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 (94 meters) and is designed to meet the requirements of Regulatory Guide 1.23 for meteorological monitoring.

x/Q and D/Q values 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 3). A source depletion model as described in "Meteorology and Atomic Energy -1968" (Reference

4) 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.

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 2008 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.

These locations were included in the assessment of effluent doses along with identified points of interest from the annual land use census.2 3.0 DOSE ASSESSMENT 3.1 Doses From Liquid Effluents ODCM 3/4.2.2 limits total body (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 IOCFR Part 50, Appendix 1. By implementing the requirements of 1OCFR Part 50, Appendix 1, ODCM 3/4.2.2 assures that the release of radioactive material in liquid effluents will be kept "as low as is reasonably achievable." For periods in which liquid waste discharges actually occur, the exposure pathways that could exist are fish, direct exposure from river shoreline sedimentation, milk and meat via animal ingestion of the Connecticut River water, and meat, milk and vegetable pathways via crop irrigation with water withdrawn from the Connecticut River. Ingestion pathways of drinking water and aquatic invertebrate do not exist down river of the Vermont Yankee plant.There were no recorded liquid radwaste discharges during the report period, and therefore, no dose impact.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 10CFR Part 50, Appendix I. By implementing the requirements of 1OCFR Part 50, Appendix I, ODCM 3/4.3.2 assures that the releases of radioactive noble gases in gaseous effluents will be kept "as low as is reasonably achievable." There were no recorded noble gas releases during the report period, and therefore, no dose impact.3.3 Doses From Iodine-13 1, Iodine-133, Tritium, and Radionuclides in Particulate Form With Half-Lives Greater Than 8 Days ODCM 3/4.3.3 limits the organ dose to a member of the public from iodine-131, iodine-133, tritium and radionuclides in particulate form with half-lives greater than 8 days (hereafter called iodines and particulates) in gaseous effluents released from the site to areas at and beyond the site boundary to those specified in 1OCFR Part 50, Appendix 1 (7.5 mrem per quarter, and 15 mrem per year). By implementing the requirements of 1OCFR Part 50, Appendix 1, ODCM 3/4.3.3 assures that the releases of iodines and particulates in gaseous effluents will be kept "as low as is reasonably achievable." Exposure pathways that could exist as a result of the release of iodines and particulates to the atmosphere include external irradiation from activity deposited onto the ground surface, inhalation, and ingestion of vegetables, meat and milk. Dose estimates 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 as required by ODCM 3/4.5.2 (see Table 4C). Conservatively, a vegetable garden was 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 3 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. It has also been assumed that only 50 percent of the iodine deposited from gaseous effluent is in elemental form (12) and is available for uptake (see p. 6, Reference 2).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 are listed by age group and pathway in Table 4D.Table 4E provides other dose model parameter assumptions used in the dose assessments.

The resultant organ doses were determined after adding the contributions from all pathways at each location.

Doses were calculated for the whole body, GI-tract, bone, liver, kidney, thyroid, lung and skin for adults, teenagers, children and infants. The maximum estimated quarterly and annual organ doses to any age group due to iodines and particulates at any of the off-site receptor locations are reported in Table 4A.These estimated organ doses are well below the 1OCFR Part 50, Appendix I dose criteria of ODCM 3/4.3.3.Table 4B provides an estimation of the total annual dose impact (including contributions from iodine and particulates) associated with the highest exposed member of the public for demonstration of compliance to the dose standard contained in 40CFR Part 190 for the uranium fuel cycle.3.4 Whole Body Doses in Unrestricted Areas From Direct Radiation The major source of dose in unrestricted areas occurs at the west site boundary, and mainly consisting of direct and skyshine radiation from N-16 decay in the Turbine Building steam cycle during power operations.

Because of the orientation of the Turbine Building on the site, and the shielding effects of the adjacent Reactor Building, only the seven westerly sectors (SSW to NNW) see any significant direct radiation.

A correlation method was derived, based directly on site boundary exposure rate and in-plant Main Steam Line Radiation Monitor measurements, that allows changes in the N-16 carryover in the main steam flow to be directly related to changes in the site boundary dose. This correlation is documented in section 6.11.1 (Equation 6-27a) of the ODCM. This method was used to calculate direct dose at the maximum site boundary location from radiation sources in the steam cycle.The other fixed sources of direct and scatter radiation to the site boundary are from the Independent Spent Fuel Storage Installation (ISFSI), the low level radioactive materials stored in the North Warehouse, the Low Level Waste Storage Pad Facility, 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 determined at the same most restrictive site boundary dose location as that for N- 16 shine from the Turbine Building.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 and effluent release doses at the limiting nearest 4 residence for the purpose of demonstrating compliance with the dose standards contained in 40CFR Part 190. For direct radiation, no credit for actual occupancy time is taken (i.e., occupancy is equal to 100%).For 2008, the annual dose limit for the nearest real resident from all station sources (effluents plus fixed radiation sources) was below the 25 mrem total body and organ limit (75 mrem thyroid) of 40 CFR 190.3.5 Doses From On-Site Disposal of Septic Waste, Cooling Tower Silt and Soil Off-Site Dose Calculation Manual, Appendices B, F and I, require that all applications of septage, cooling tower silt and sand/soil within the approved designated disposal areas be limited to ensure the dose to a maximally exposed individual during the period of Vermont Yankee site control be maintained at less than I 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 maintained at less than 5 mremlyear.

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.The dose limits applicable for the on-site spreading of materials were met for the single disposal (septic waste) in 2008 and in combination with all past spreadings.

3.6 On-Site Recreational Activities During 2008, no access for employees, their families and guests to the boat launching ramp located on-site just north of the intake structure was permitted.

As such, no recreational activities were permitted on-site during the report period and, therefore, no associated dose impact to members of the public.5 REFERENCES

1. Off-site Dose Calculation Manual (ODCM), Revision 32, Entergy Nuclear Vermont Yankee, LLC, dated 06/24/08.2. Regulatory Guide 1.109, "Calculation of Annual Doses to Man From Routine Release of Reactor Effluents for the Purpose of Evaluating Compliance with 1OCFR Part 50, Appendix I", U. S. Nuclear Regulatory Commission, Office of Standards Development, Revision 1, October 1977.3. 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 1976.4. Meteorology and Atomic Energy, 1968, Section 5-3.2.2, "Cloud Depletion", pg. 204. U. S. Atomic Energy Commission, July 1968.6 TABLE IA Enteriv Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report First and Second Ouarters.

2008 Gaseous Effluents -Summation of All Releases Unit Quarter Quarter Est. Total 1 2 Error, %A. Fission'and Activation Gases 1. Total release Ci ND ND 2. Average release rate for period ttCi/sec ND ND 3. Percent of ODCM limit (1) % ND ND B. lodines I. Total Iodine Ci ND 5.02E-06 1l.80E+O1 2. Average release rate for period pCi/sec ND 6.32E-07 3. Percent of ODCM limit (2) 4.84E-03 1.76E-02 C. Particulates I. Particulates with T- 1/2>8 days Ci ND ND l1.80E+01 2. Average release rate for period pCi/sec ND ND 3. Percent of ODCM limit (3) % (3) (3)4. Gross alpha radioactivity Ci ND ND D. Tritium I. Total release Ci 1.16E+00 1.68E+00 +/-1.80E+01 2.' Average release rate for period pCi/sec 1.45E-01 2.11 E-01 3. Percent of ODCM limit (3) % (3') (3)ND = Not Detected (1) ODCM Control 3.3.2. for the most limiting of beta air or gamma air dose. Percentage of ODCM limit calculated using Method I dose results.(2) ODCM Control 3.3.3. for dose from 1-131, 1-133, Tritium, and radionuclides in particulate form. Percentage of ODCM limit calculated using Method I dose results.(3) Per ODCM Control 3.3.3, dose contribution from Tritium and particulates are included with Iodine above in Part B.7 TABLE 1A (Continued)

Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report Third and Fourth Quarters, 2008 Gaseous Effluents -Summation of All Releases Unit Quarter Quarter Est. Total 3 4 Error, %A. Fission and Activation Gases 1. Total release Ci ND ND 2. Average release rate for period gCi/sec ND ND 3. Percent of ODCM limit (1) % ND ND B. Jodines 1. Total Iodine Ci 7.53E-05 8.96E-05 +/-1.80E+01 2. Average release rate for period pCi/sec 9.48E-06 1.12E-05 3. Percent of ODCM limit (2) % 3.29E-02 4.22E-02'C. Particulates

1. Particulates with T-1/2>8 days Ci 2.63E-05 ND +/-1.80E+01 2. Average release rate for period pCi/sec 3.3 1E-06 ND 3. Percent of ODCM limit.(3)

% (3) (3)4. Gross alpha radioactivity Ci ND ND D. Tritium 1. Total release Ci 1.88E+00 7.90E-01 +/-1.80E+01 2. Average release rate for period p.Ci/sec 1.27E-01 9.94E-02 3. Percent of ODCM limit (3) % (3) (3)ND = Not Detected (1) ODCM Control 3.3.2. for the most limiting of beta air or gamma air dose. Percentage of ODCM limit calculated using Method I dose results.(2) ODCM Control 3.3.3. for dose from 1-131, 1-133, Tritium, and radionuclides in particulate form. Percentage of ODCM limit calculated using Method I dose results.(3) Per ODCM Control 3.3.3, dose contribution from Tritium and particulates are included with Iodine above in Part B.8 TABLE 1B Enterav Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report First and Second Quarters, 2008 Gaseous Effluents -Elevated Releases Continuous Mode Batch Mode (1)Quarter Quarter Nuclides Released Units 1 2 1 2 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. lodines Iodine- 131 Ci ND 5.02E-06 Iodine-133 Ci ND ND Iodine-135 Ci ND ND Total for Period Ci ND 5.02E-06 (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 Zinc-65 Ci ND ND Total for Period Ci ND ND (1) (1)ND (1)Not Detected at the plant stack There were no batch mode gaseous releases for this reporting period.9 TABLE 1B (Continued)

Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report Third and Fourth Ouarters.

2008 Gaseous Effluents -Elevated Releases Continuous Mode Batch Mode (1)Quarter Quarter Nuclides 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 2. lodines Iodine-131 Ci 1.06E-05 2.64E-05 Iodine-133 Ci 6.47E-05 6.32E-05 Iodine-135 Ci ND ND Total for Period Ci 7.53E-05 8.96E-05 3. Particulates Strontium-89 Ci 2.63E-05 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 2.63E-05 ND ND Not Detected at the Plant Stack (1) There were no batch mode gaseous releases for this reporting period.10 TABLE IC Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Renort First and Second Ouarters.

2008 Gaseous Effluents -Ground Level Releases (2)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. lodines 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 ground level gaseous releases for this reporting period.(2) No Radioactively Contaminated Used Oil was burned during 2008.11 TABLE IC (Continued)

Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report Third and Fourth Ouarters.

2008 Gaseous Effluents

-Ground Level Releases(2)

Continuous Mode Batch Mode Quarter Quarter Nuclides Released Units 3(1) 4(l) 3(1) 4(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. lodines 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 2008 12 TABLE ID Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2008 Gaseous Effluents -Nonroutine Releases There were no non-routine or accidental gaseous releases during this reporting period.13 TABLE 2A Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2008 Liquid Effluents Summation of All Releases There were no liquid releases during this reporting period.14 TABLE 2B Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report for 2008 Liquid Effluents Nonroutine Releases There were no non-routine or accidental liquid releases during this reporting period.15 TABLE 3 Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report First and Second Quarters for 2008 Solid Waste and Irradiated Fuel Shipments A.. Solid Waste Shipped Off-Site for Burial or Disposal (not irradiated fuel)1. Type of Waste Shipped from VY for Burial Unit 1st & 2nd Quarters I Est. Total Error %a. Spent resins, filter sludges, etc. m3 0.0 +1- 2.50 E+01 Ci 0.[ +/- 2.50 E+01 b. Dry Compressable waste, equipment, etc. m3 0.00 +/- 2.50 E+01 Ci 0.OOOOE+00

+1- 2.50 E.01 c. Irradiated components, control rods, etc, m3 0.0 +/- 2.50 E+01 Ci 0.0 ./- 2.50 E+01 Shipped from Processor(s) for Burial ,Unit 1 st&2ndQuarters , Est. Total Error %a. Spent resins, filter sludges, etc. m3 2.67]" +/- 2.50 E+01 Ci 3.6670E+02

+/- 2.50 E+01 b. Dry Compressable waste. equipment, etc. m3 44.22 +/- 2.50 E+01 Ci 7.6274E-01

+/- 2.50 E+01 c. Irradiated components, control rods, etc, m3 0.0 +/ 2.50 E+01 Ci £ 0.0 +1- 2.50 E+01 2. Estimate of Major Nuclide Composition (By Type of Waste)a. spent resins filter sludges -b. Dry Compactable waste, equipment Ic. Irradiated components, control rods, etc, Isotope Percent (1) Isotope Percent Isotope Percent Co-60 20.95% Cr-51 9.65% na na Fe-55 35.81% Mn-54 3.89%Zn-65 19.17% Fe-55 55.79%Ni-63 9.63% Fe-59 0.91%Mn-54 5.87% Co-58 0.99%Cs-137 7.70% Co-60 16.74%Zn-65 10.05%Zr-95 1.13%(1) includes only those nuclides that are greater than 1% of the total activity 3. Disposition of Solid Waste Shipments (1st & 2nd Quarters)No. of Shipments From VY From Processor Mode To Processor To Burial X truck / rail Energy Solutions, Clive UT 10 X truck 1/S-Oak Ridge TN 5 X truck Studsvik-Erwin, TN 18 E/S-Bear Creek TN truck Energy Solutions, Clive UT 1 Studsvik-Memphis TN truck Energy Solutions, Clive UT 8 Studsvik-Erwin TN truck E/S -Bamwell SC B. Irradiated Fuel Shipments (Disposition):

None C. Additional Data (1st & 2nd Quarters)Supplimental Information

[vY to processor VY to Burial [ Processors to Burial Class of Solid Waste Shipped AU, B AU,B AU, A, B, C Type of Containers Used STC/Type A STC STC, Type A, Type B Solidification Agent or Absorbent Used none none none Completed BY: C)Reviewed By: 16 TABLE 3 Entergy Nuclear Vermont Yankee Effluent and Waste Disposal Annual Report Third and Fourth Quarters for 2008 Solid Waste and Irradiated Fuel Shipments A. Solid Waste Shipped Off-Site for Burial or Disposal (not irradiated fuel)1. Type of Waste Shipped from VY for Burial Unit 3rd & 4th Quarters ] Est. Total Error %a. Spent resins, filter sludges, etc. m3 0.0 +/- 2.50 E+01 Ci 0.0 +r 2.50 E+01 b. Dry Compressable waste, equipment, etc. m3 0.0 +/- 2.50 E+01 Ci 0.0 +/- 2.50 E+01 c. Irradiated components, control rods, etc, m3 0.0 +/- 2.50 E+01 Ci 0.0 +,- 2.50 E+01 Shipped from Processor(s) for Burial Unit ] 3rd & 4th Quarters ] Est. Total Error %a. Spent resins, filter sludges, etc. m3 13.71 +/- 2.50 E+01 Ci 9.1100E+01

+/- 2.50 E+01 b. Dry Compressable waste, equipment, etc. m3 31.07 +/- 2.50 E+01 Ci 5.2247E+00

+/- 2.50 E+01 c. Irradiated components, control rods, etc, m3 0.0 +/- 2.50 E+01 Ci

0.0 +/- 2.50 E+01 2, Estimate of Major Nuclide Composition (By Type of Waste)a. spent resins filter sludges b. Dry Compactable waste, equipment

]c. Irradiated components, control rods, etc, Isotope Percent (1) Isotope Percent Isotope Percent Co-60 20.95% Cr-51 9.65% na na Fe-55 35.81% Mn-54 3.89%Zn-65 19.17% Fe-55 55.79%Ni-63 9.63% Fe-59 0.91%Mn-54 5.87% Co-58 0.99%.Cs-137 7.70% Co-60 16.74%Zn-65 10.05%Zr-95 1.13%(1) includes only those nuclides that are greater than 1% of the total activity 3. Disposition of Solid Waste Shipments (3rd & 4th Quarters)No. of Shipments From VY From Processor Mode To Processor To Burial 1 x ..... truck E/S -Barnwell Proc.14 X truck E/S- Oak Ridge TN 0 X truck Studsvik-Erwin, TN 1 E/S -Bamwell Proc. truck Energy Solutions, Clive UT 21 E/S -Bear Creek TN truck Energy Solutions, Clive UT 0 Studsvik-Memphis TN truck Energy Solutions, Clive UT 0 _Studsvik-Erwin TN truck I _E/S -Barnwell SC B. Irradiated Fuel Shipments (Disposition):

None C. Additional Data (3rd & 4th Quarters)Supplimental Information VY to processor VY to Burial Processors to Burial Class of Solid Waste Shipped AAU A, C Type of Containers Used STC/Type A STC, Type A & B Solidification Agent or Absorbent Used none none Completed By:/. "T, 4'Reviewed By:,l-==4 131122 17 TABLE 4A Entergy Nuclear Vermont Yankee Maximum* Off-Site Doses/Dose Commitments to Members of the Public from Liquid and Gaseous Effluents for 2008 (1OCFR50, Appendix I)Dose (mrem)(a)Source 1stt 2nd I 3rd 4th Year(b)Quarter Quarter Quarter Quarter_____________Liquid Effluents Total Body Dose ..........

Footnotes (c) (c) (c) (c) (c)Organ Dose .....t....Footnotes (c) (c) (c) (c) (c)Airbe nenEffluents lodines and 5.35E-04 5.08E-04 5.66E-04 3.34E-04 1.94E-03 Particulates Footnotes (1) (2) (3) (4),Noble G~ases Beta Air (mrad) ..-- -- .-- --Footnotes (d) (d) (d) (d) (d)Gamma Air (mrad) -... I ... .--Footnotes (d) (d) (d) (d) (d)Dir~e6&k Rdiatfion 4.36 4.22 4.46 3.26 16.30 (e)"Maximum" means the largest fraction of the corresponding 1OCFR50, Appendix I dose design objective.(a) The numbered 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) There were no liquid releases in this quarter (d) There were no noble gas releases in this quarter.(e) Maximum direct dose point located on the west site boundary (1) CHILD/All Organs/WNW

/2400 meters from stack (2) CHILD/THYROID/WNW

/2400 meters from stack (3) CHILD/THYROID/WNW/2400 meters from stack (4) CHILD/THYROID/NW/2900 meters from stack"All Organs" include equal impact to Liver, Kidney, Lung, GI-LLI, Thyroid and Whole Body.18 TABLE 4B Entergy Nuclear Vermont Yankee Maximum Annual Dose Commitments from Direct External Radiation, Plus Liquid and Gaseous Effluents for 2008(*)(40CFRI90)

Pathway Total Body Maximum Organ Thyroid (mrem) (mrem) (mrem)Direct External (a) 16.30 16.30 16.30 Liquids (b) N/A N/A N/A Gases (c) 1.38E-06 1.39E-06 1.62E-06 Annual Total (d) 16.30 16.30 16.30 (*) The location of the projected maximum individual doses from combined direct radiation plus liquid and gaseous effluents correspond to residences at the southwest boundary relative to the Turbine Hall.(a) No occupancy time fraction (assumed 100%) or residential shielding credit is assumed which would reduce real doses below the calculated values. Expected direct external radiation doses would be reduced by about 54% with a realistic residential shielding credit and occupancy time (0.7 shielding factor from Regulatory Guide 1.109 and annual occupancy time 6760 hours0.0782 days 1.878 hours 0.0112 weeks 0.00257 months ).(b) There were no liquid releases in 2008.(c) Maximum dose to any. organ over all age groups for each release.(d) Annual dose limits contained in the EPA Radiation Protection Standards (40CFR 190) equal 25 mrem to the total body and any organ, except 75 mrem to the thyroid of a real member of the public.19 TABLE 4C Receptor Locations Entergy Nuclear Vermont Yankee () Nearest Milk Sector Site Boundary ) Nearest Resident 2 Animal(2 Within (Meters) (Meters) 10 kWn (Meters)N 400 1400 --NNE 350 1384 5520 (cows)NE 350 1255 --ENE 400 966 --E 500 935 --ESE 700 1915 --SE 750 1963 3600 (cows)SSE 850 2044 S 385 64413) 2220 (cows)SSW 300 451 --SW 250 418 8200 (cows)WSW 250 451 9730 (cows)W 300 628 820 (cows)WNW 400 1062 --NW 550 2253 --NNW 550 1738 --(1) Vermont Yankee UFSAR Figure 2.2-5.(2) The location(s) given are based on information from the Vermont Yankee 2008 Land Use Census and are relative to the plant stack. Gardens are assumed to be present at all resident locations.

(3) The nearest residence was located in the S sector at 385 m from the plant stack through July 2008, but was vacated prior the Land Use Census conducted in September 2008. It was conservatively assumed that this residence was present for the entire year.20 TABLE 4D Usage Factors for Gaseous Pathways Entergy Nuclear Vermont Yankee (From Reference 2, Table E-5*)Age Veg. Leafy Veg. Milk Meat Inhalation Group (kg/yr) (kg/yr) (l/yr) (kg/yr) (m 3/yr)Adult 520 64 310 110 8,000 Teen 630 42 400 65 8,000 Child 520 26 330 41 3,700 Infant 0 0 330 0 1,400* Regulatory Guide 1.109 (Reference 2).21 TABLE 4E Environmental Parameters for Gaseous Effluents

Entergy Nuclear Vermont Yankee Vegetabl es Cow Milk Goat Milk Meat Variable Stored Leafy Pasture Stored j Pasture Stored Pasture Stored YV Agricultural Productivity 2 2 0.70 2 0.70 2 0.70 2 (kg/m 2)P Soil Surface Density (kg/m 2) 240 240 240 240 240 240 240 240 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 1 1 1 Pasture(c)

Note: Footnotes on following page.22 TABLE 4E (Continued)

Environmental Parameters for Gaseous Effluents-Entergy Nuclear Vermont Yankee Vegetables Cow Milk Goat Milk Meat Variable Stored Leafy Pasture Stored Pasture 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 = 5.6-ad* From VY ODCM, Table 6.9.1 (Reference 1).(a) For Method IL 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 I1 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 (nongrowing 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/mi 3) shall be used to reflect conditions in the Northeast (

Reference:

Health Physics Journal, Volume 39 (August), 1980; Pages 318-320, Pergammon Press).23 TABLE 5A VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS A CLASS FREQUENCY (PERCENT) 2.79 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 5 2 1 5 2 2 1 0 0 0 0 0 0 0 0 0 18 (1) .00 2.05 .82 .41 2.05 .82 .82 .41 .00 .00 .00 .00 .00 .00 .00 .00 .00 7.38 (2) .00 .06 .02 .01 .06 .02 .02 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .21 4-7 25 4 1 1 4 17 11 9 8 0 0 0

6 2 1 33 0 122 (1) 10.25 1.64 .41 .41 1.64 6.97 4.51 3.69 3.28 .00 .00 .00 2.46 .82 .41 13.52 .00 50.00 (2) .29 .05 .01 .01 .05 .19 .13 .10 .09 .00 .00 .00 .07 .02 .01 .38 .00 1.39 8-12 23 3 0 0 1 3 1 3 3 3 1 1 6 10 5 31 0 94 (1) 9.43 1.23 .00 .00 .41 1.23 .41 1.23 1.23 1.23 .41 .41 2.46 4.10 2.05 12.70 .00 38.52 (2) .26 .03 .00 .00 .01 .03 .01 .03 .03 .03 .01 .01 .07 .11 .06 .35 .00 1.07 13-18 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 6 0 10 (1) .00 .00 .00 .00 .00 .00 .00 .00 .41 .41 .00 .00 .00 .41 .41 2.46 .00 4.10 (2) .00 .00 .00 .00 .00 .00 .00 .00 .01 .01 .00 .00 .00 .01 .01 .07 .00 .11 19-24. 0. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .0 (i) .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 48 12 3 2 -10 22 14 13 12 4 1 1 12 13 7 70 0 244 (1) 19.67 4.92 1.23 .82 4.10 9.02 5.74 5.33 4.92 1.64 .41 .41 4.92 5.33 2.87 28.69 .00 100.00 (2) .55 .14 .03 .02 .11 .25 .16 .15 .14 .05 .01 .01 .14 .15 .08 .80 .00 2.79 (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)24 TABLE 5B VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS B CLASS FREQUENCY (PERCENT)WIND DIRECTION FROM 2.98 SPEED MPH N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW VRBL TOTAL 0 0 0 0 0 0 0 0 0 0 ID .00 .00 .00 .00 .00 .00 .00 .00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 CALM 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 C-3 6 2 (I) 2.30 .77 (2) .07 .02 4-7 25 4 (1) 9.58 1.53 (2) .29 .05 8-12 11 3 (1) 4.21 1.15 (2) .13 .03 0 2 4 2 3 2 0 1.00 .77 1.53 .77 1.15 .77 .00 .38.00 .02 .05 .02 .03 .02 .00 .01 1 1 19 26 12 14 7 4.38 .38 7.28 9.96 4.60 5.36 2.68 1.53.01 .01 .22 .30 .14 .16 .08 .05 0 2 1 3 0 1 8 2.00 .77 .38 1.15 .00 .38 3.07 .77.00 .02 .01 .03 .00 .01 .09 .02 0 0 0 0 1 1 0 24.00 .00 .00 .00 .38 .38 .00 9.20.00 .00 .00 .00 .01 .01 .00 .27 2 5 3 6 5 23 0 157.77 1.92 1.15 2.30 1.92 8.81 .00 60.15.02 .06 .03 .07 .06 .26 .00 1.79 1 0 4 10 7 18 0 71.38 .00 1.53 3.83 2.68 6.90 .00 27.20.01 .00 .05 .11 .08 .21 .00 .81 0 0 0 1 2 5 0 9.00 .00 .00 .38 .77 1.92 .00 3.45.00 .00 .00 .01 .02 .06 .00 .10 13-18 0 0 0 1 0 0 0 0 0 0 (1) .00 .00 .00 .38 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 19-24 0 0 0 0 0 0 0 .0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 GT 24 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 0 0 0 0 0 0 0.00 .00 .00 .00 .00 .00 .00.00 .00 .00 .00 .00 .00 .00 0 0 0 0 0 0 0.00 .00 .00 .00 .00 .00 .00.00 .00 .00 .00 .00 .00 .00 0.00.00 0.00.00 ALL SPEEDS 42 9 (1) 16.09 3.45 (2) .48 .10 1 6 24 31 15 17 15 7 3 5 7 17 15 47 0 261.38 2.30 9.20 11.88 5.75 6.51 5.75 2.68 1.15 1.92 2.68 6.51 5.75 18.01 .00 100.00.01 .07 .27 .35 .17 .19 .17 .08 .03 .06 .08 .19 .17 .54 .00 2.98 (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)25 TABLE 5C VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS C CLASS FREQUENCY (PERCENT)

= 5.52 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 14 13 5 9 10 16 14 7 0 1 5 0 0 3 0 2 0 99 (1) 2.90 2.69 1.04 1.86 2.07 3.31 2.90 1.45 .00 .21 1.04 .00 .00 .62 .00 .41 .00 20.50 (2) .16 .15 .06 .10 .11 .18 .16 .08 .00 .01 .06 .00 .00 .03 .00 .02 .00 1.13 4-7 28 , 18 6 7 25 23 28 19 27 8 4 4 8 11 17 40 0 273 (1) 5.80 3.73 1.24 1.45 5.18 4.76 5.80 3.93 5.59 1.66 .83 .83 1.66 2.28 3.52 8.28 .00 56.52 (2) .32 .21 .07 .08 .29 .26 .32 .22 .31 .09 .05 .05 .09 .13 .19 .46 .00 3.12 8-12 15 5 1 2 0 1 1 1 12 4 4 1 11 14 8 18 0 98 (1) 3.11 1.04 .21 .41 .00 .21 .21 .21 2.48 .83 .83 .21 2.28 2.90 1.66 3.73 .00 20.29 (2) .17 .06 .01 .02 .00 .01 .01 .01 .14 .05 .05 .01 .13 .16 .09 .21 .00 1.12 13-18 0 0 0 0 0 0 1 0 3 0 0 0 0 5 3 1 0 13 (1) .00 .00 .00 .00 .00 .00 .21 .00 .62 .00 .00 .00 .00 1.04 .62 .21 .00 2.69 (2) .00 .00 .00 .00 .00 .00 .01 .00 .03 .00 .00 .00 .00 .06 .03 .01 .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 57 36 12 18 35 40 44 27 42 13 13 5 19 33 28 61 0 483 (1) 11.80 7.45 2.48 3.73 7.25 8.28 9.11 5.59 8.70 2.69 2.69 1.04 3.93 6.83 5.80 12.63 .00 100.00 (2) .65 .41 .14 .21 .40 .46 .50 .31 .48 .15 .15 .06 .22 .38 .32 .70 .00 5.52 (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)26 TABLE 5D VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS D CLASS FREQUENCY (PERCENT)

ý 43.15 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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 (1) .00 .00 .00 .03 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .03 (2) .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 C-3 130 74 66 46 63 61 92 80 67 53 40 56 35 43 101 137 0 1144 (1) 3.44 1.96 1.75 1.22 1.67 1.62 2.44 2.12 1.78 1.40 1.06 1.48 .93 1.14 2.68 3.63 .00 30.31 (2) 1.49 .85 .75 .53 .72 .70 1.05 .91 .77 .61 .46 .64 .40 .49 1.15 1.57 .00 13.08 4-7 173 38 16 18 49 63 93 246 267 45 30 50 124 120 92 325 0 1749 (1) 4.58 1.01 .42 .48 1.30 1.67 2.46 6.52 7.07 1.19 .79 1.32 3.29 3.18 2.44 8.61 .00 46.34 (2) 1.98 .43 .18 .21 .56 .72 1.06 2.81 3.05 .51 .34 .57 1.42 1.37 1.05 3.72 .00 20.00 8-12 73 17 0 5 3 5 6 17 101 18 6 7 74 174 108 132 0 746 (1) 1.93 .45 .00 .13 .08 .13 .16 .45 2.68 .48 .16 .19 1.96 4.61 2.86 3.50 .00 19.77 (2) .83 .19 .00 .06 .03 .06 .07 .19 1.15 .21 .07 .08 .85 1.99 1.23 1.51 .00 8.53 13-18 -4 0 0 0 0 0 0 0 16 4 0 0 3 54 32 14 0 127 (1) .11 .00 .00 .00 .00 .00 .00 .00 .42 .11 .00 .00 .08 1.43 .85 .37 .00 3.37 (2) .05 .00 .00 .00 .00 .00 .00 .00 .18 .05 .00 .00 .03 .62 .37 .16 .00 1.45 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 4 2 0 0 6 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 -.00 .11 .05 .00 .00 .16 (2) .00 .00 .00 .00 -.00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .02 .00 .00 .07 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .03 .00 .00 .03 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .01 ALL SPEEDS 380 129 82 70 115 129 191 343 451 120 76 113 236 395 336 608 0 3774 (1) 10.07 3.42 2.17 1.85 3.05 3.42 5.06 9.09 11.95 3.18 2.01 2.99 6.25 10.47 8.90 16.11 .00 100.00 (2) 4.34 1.47 .94 .80 1.31 1.47 2.18 3.92 5.16 1.37 .87 1.29 2.70 4.52 3.84 6.95 .00 43.15 (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)27 TABLE 5E VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS E CLASS FREQUENCY (PERCENT)

= 28.79 WIND DIRECTION FROM SPEED MPH CALM (1)(2)C-3 (1)(2)4-7 (1)(2)8-12 (1)(2)13-18 (1)(2)19-24 (1)(2)GT 24 (1)(2)ALL SPEEDS (1)(2)N NNE NE 1 0 2.04 .00 .08.01 .00 .02 54 29 16 2.14 1.15 .64.62 .33 .18 27 3 1 1.07 .12 .04.31 .03 .01 2 0 0.08 .00 .00.02 .00 .00 0 0 0.00 .00 .00.00 .00 .00 0 0 0.00 .00 .00.00 .00 .00 0 0 0.00 .00 .00.00 .00 .00 84 32 19 3.34 1.27 .75.96 .37 .22 ENE 0.00.00 14.56.16 4.16.05 0.00.00 0.00.00 0.00.00 0.00.00 18.71.21 E ESE SE SSE S SSW SW WSW W WNW NW NNW VRBL TOTAL 0 1 0 2 0 0 0 0 2 0 0 0.00 .04 .00 .08 .00 .00 .00 .00 .08 .00 .00 .00.00 .01 .00 .02 .00 .00 .00 .00 .02 .00 .00 .00 14 27 48 75 119 140 178 212 235 171 189 152.56 1.07 1.91 2.98 4.73 5.56 7.07 8.42 9.33 6.79 7.51 6.04.16 .31 .55 .86 1.36 1.60 2.03 2.42 2.69 1.95 2.16 1.74 1 8 26 42 62 34 27 29 76 76 85 193.04 .32 1.03 1.67 2.46 1.35 1.07 1.15 3.02 3.02 3.38 7.66.01 .09 .30 .48 .71 .39 .31 .33 .87 .87 .97 2.21 0 0 0 5 49 5 1 1 10 27 21 12.00 .00 .00 .20 1.95 .20 .04 .04 .40 1.07 .83 .48.00 .00 .00 .06 .56 .06 .01 .01 .11 .31 .24 .14 0 0 0 2 5 1 0 0 1 1 0 0.00 .00 .00 .08 .20 .04 .00 .00 .04 .04 .00 .00.00 .00 .00 .02 .06 .01 .00 .00 .01 .01 .00 .00 0 0 0 0 0 0 0 0 0 0 0 0.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 0 0 0 0 0 0 0 0 0 0 0 0.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 15 36 74 126 235 180 206 242 324 275 295 357.60 1.43 2.94 5.00 9.33 7.15 8.18 9.61 12.87 10.92 11.72 14.18.17 .41 .85 1.44 2.69 2.06 2.36 2.77 3.70 3.14 3.37 4.08 0 8.00 .32.00 .09 0 1673.00 66.44.00 19.13 0 694.00 27.56.00 7.93 0 133.00 5.28.00 1.52 0 10.00 .40.00 .11 0 0.00 .00.00 .00 0 0.00 .00.00 .00 0 2518.00 100.00.00 28.79 (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)28 TABLE 5F VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS F CLASS FREQUENCY (PERCENT)

= 13.88 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 1 0 0 0 0 0 0 0 0 1 0 0 0 0 2 (1) .00 .00 .00 .08 .00 .00 .00 .00 .00 .00 .00 .00 .08 .00 .00 .00 .00 .16 (2) .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .02 C-3 12 8 5 4 2 7 13 24 51 95 198 263 225 126 71 41 0 1145 (1) .99 .66 .41 .33 .16 .58 1.07 1.98 4.20 7.83 16.31 21.66 18.53 10.38 5.85 3.38 .00 94.32 (2) .14 .09 .06 .05 .02 .08 .15 .27 .58 1.09 2.26 3.01 2.57 1.44 .81 .47 .00 13.09 4-7 0 0 0 0 1 1 2 4 6 9 5 7 10 1 7 11 0 64 (1) .00 .00 .00 .00 .08 .08 .16 .33 .49 .74 .41 .58 .82 .08 .58 .91 .00 5.27 (2) .00 .00 .00 .00 .01 .01 .02 .05 .07 .10 .06 .08 .11 .01 .08 .13 .00 .73 8-12 0 0 0 0 0 0 0 0 0 0 0 0 1 .1 1 0 0 3 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .08 .08 .08 .00 .00 .25 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .01 .01 .00 .00 .03 13 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 12 8 5 5 3 8 15 28 57 104 203 270 237 128 79 52 0 1214 (1) .99 .66 .41 .41 .25 .66 1.24 2.31 4.70 8.57 16.72 22.24 19.52 10.54 6.51 4.28 .00 100.00 (2) .14 .09 .06 .06 .03 .09 .17 .32 .65 1.19 2.32 3.09 2.71 1.46 .90 .59 .00 13.88 (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)29 TABLE 5G VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS G CLASS FREQUENCY (PERCENT)

= 2.89 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 5 1 4 1 1 0 2 7 10 28 47 46 38 31 19 7 0 247 (1) 1.98 .40 1.58 .40 .40 .00 .79 2.77 3.95 11.07 18.58 18.18 15.02 12.25 7.51 2.77 .00 97.63 (2) .06 .01 .05 .01 .01 .00 .02 .08 .11 .32 .54 .53 .43 .35 .22 .08 .00 2.82 4-7 0 0 0 0 1 0 0 0 1 1 1 0 0 0 2 0 0 6 (1) .00 .00 .00 .00 .40 .00 .00 .00 .40 .40 .40 .00 .00 .00 .79 .00 .00 2.37 (2) .00 .00 .00 .00 .01 .00 .00 .00 .01 .01 .01 .00 .00 .00 .02 .00 .00 .07 8-12 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 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 5 1 4 1 2 0 2 7 11 29 48 46 38 31 21 7 0 253 (1) 1.98 .40 1.58 .40 .79 .00 .79 2.77 4.35 11.46 18.97 18.18 15.02 12.25 8.30 2.77 .00 100.00 (2) .06 .01 .05 .01 .02 .00 .02 .08 .13 .33 .55 .53 .43 .35 .24 .08 .00 2.89 (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)30 TABLE 5H VERMONT YANKEE JAN 08 -DEC 08 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 1 0 2 2 0 1 0 2 0 0 0 0 3 0 0 0 0 11 (1) .01 .00 .02 .02 .00 .01 .00 .02 .00 .00 .00 .00 .03 .00 .00 .00 .00 .13 (2) .01 .00 .02 .02 .00 .01 .00 .02 .00 .00 .00 .00 .03 .00 .00 .00 .00 .13 C-3 221 132 .98 77 99 115 174 196 247 318 468 577 533 374 381 340 0 4350 (1) 2.53 1.51 1.12 .88 1.13 1.31 1.99 2.24 2.82 3.64 5.35 6.60 6.09 4.28 4.36 3.89 .00 49.73 (2) 2.53 1.51 1.12 .88 1.13 1.31 1.99 2.24 2.82 3.64 5.35 6.60 6.09 4.28 4.36 3.89 .00 49.73 4-7 278 67 25 31 100 138 172 334 378 101 69 95 227 216 209 625 0 3065 (1) 3.18 .77 .29 .35 1.14 1.58 1.97 3.82 4.32 1.15 .79 1.09 2.60 2.47 2.39 7.15 .00 35.04 (2) 3.18 .77 .29 .35 1.14 1.58 1.97 3.82 4.32 1.15 .79 1.09 2.60 2.47 2.39 7.15 .00 35.04 8-12 124 28 1 9 5 12 8 27 173 32 13 10 106 236 150 211 0 1145 (1) 1.42 .32 .01 .10 .06 .14 .09 .31 1.98 .37 .15 .11 1.21 2.70 1.71 2.41 .00 13.09 (2) 1.42 .32 .01 .10 .06 .14 .09 .31 1.98 .37 .15 .11 1.21 2.70 1.71 2.41 .00 13.09 13-18 4 0 0 1 0 0 1 2 25 6 0 0 4 62 38 26 0 169 (1) .05 .00 .00 .01 .00 .00 .01 .02 .29 .07 .00 .00 .05 .71 .43 .30 .00 1.93 (2) .05 .00 .00 .01 .00 .00 .01 .02 .29 .07 .00 .00 .05 .71 .43 .30 .00 1.93 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 4 2 0 0 6 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .02 .00 .00 .07 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .02 .00 .00 .07 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .01 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .01 ALL SPEEDS 628 227 126 120 204 266 355 561 823 457 550 682 873 892 781 1202 0 8747 (1) 7.18 2.60 1.44 1.37 2.33 3.04 4.06 6.41 9.41 5.22 6.29 7.80 9.98 10.20 8.93 13.74 .00 100.00 (2) 7.18 2.60 1.44 1.37 2.33 3.04 4.06 6.41 9.41 5.22 6.29 7.80 9.98 10.20 8.93 13.74 .00 100.00 (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)31 TABLE 6A VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS A CLASS FREQUENCY (PERCENT)

= .49 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 1 2 3 1 1 0 0 1 0 1 0 0 0 10 (1) .00 .00 .00 .00 2.33 4.65 6.98 2.33 2.33 .00 .00 2.33 .00 2.33 .00 .00 .00 23.26 (2) .00 .00 .00 .00 .01 .02 .03 .01 .01 .00 .00 .01 .00 .01 .00 .00 .00 .11 4-7 0 0 0 0 2 2 6 2 0 0 0 0 0 0 0 0 0 12 (1) .00 .00 .00 .00 4.65 4.65 13.95 4.65 .00 .00 .00 .00 .00 .00 .00 .00 .00 27.91 (2) .00 .00 .00 .00 .02 .02 .07 .02 .00 .00 .00 .00 .00 .00 .00 .00 .00 .14 8-12 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 3 0 4 (1) .00 .00 .00 .00 .00 .00 2.33 .00 .00 .00 .00 .00 .00 .00 .00 6.98 .00 9.30 (2) .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .03 .00 .05 13-18 2 0 0 0 0 0 0 0 1 0 0 0 3 , 2 0 4 0 12 (1) 4.65 .00 .00 .00 .00 .00 .00 .00 2.33 .00 .00 .00 6.98 4.65 .00 9.30 .00 27.91 (2) .02 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .03 .02 .00 .05 .00 .14 19-24 0 0 0 0 0 0 0 0. 0 0 0 0 0 0 0 5 0 5 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 11.63 .00 11.63 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .06 .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 2 0 0 0 3 4 10 3 2 0 0 -1 3 3 0 12 0 43 (1) 4.65 .00 .00 .00 6.98 9.30 23.26 6.98 4.65 .00 .00 2.33 6.98 6.98 .00 27.91 .00 100.00 (2) .02 .00 .00 .00 .03 .05 .11 .03 .02 .00 .00 .01 .03 .03 .00 .14 .00 .49 (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 TABLE 6B VERMONT YANKEE JAN 08 -. DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS B CLASS FREQUENCY (PERCENT)WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE S SSW SW WSW MPH CALM 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 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 0 0 0 0 0 0 1 1 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 1.22 1.22 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .01 .01 .00 .00 .00 .00 4-7 0 0 0 0 1 4 3 0 0 0 0 0 (1) .00 .00 .00 .00 1.22 4.88 3.66 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .01 .05 .03 .00 .00 .00 .00 .00 8-12 2 0 0 0 0 7 11 7 1 0 0 0 (i) 2.44 .00 .00 .00 .00 8.54 13.41 8.54 1.22 .00 .00 .00 1 (2) .02 .00 .00 .00 .00 .08 .13 .08 .01 .00 .00 .00 13-18 2 0 0 0 0 0 1 3 2 0 2 0 (1) 2.44 .00 .00 .00 .00 .00 1.22 3.66 2.44 .00 2.44 .00 3 (2) .02 .00 .00 .00 .00 .00 .01 .03 .02 .00 .02 .00 19-24 0 0 0 0 0 0 0 0 1 1 1 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 1.22 1.22 1.22 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .01 .01 .01 .00 GT 24 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 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 4 0 0 0 1 11 16 11 4 1 3 0 (1) 4.88 .00 .00 .00 1.22 13.41 19.51 13.41 4.88 1.22 3.66 .00 4 (2) .05 .00 .00 .00 .01 .13 .18 .13 .05 .01 .03 .00 (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).94 W WNW NW NNW VRBL TOTAL 0 0 0 0 0 0.00 .00 .00 .00 .00 .00.00 .00 .00 .00 .00 .00 0 0 0 0 0 2.00 .00 .00 .00 .00 2.44.00 .00 .00 .00 .00 .02 0 0 0 1 0 9.00 .00 .00 1.22 .00 10.98.00 .00 .00 .01 .00 .10 1 0 0 8 0 37.22 .00 .00 9.76 .00 45.12.01 .00 .00 -.09 .00 .42 3 3 0 7 0 23.66 3.66 .00 8.54 .00 28.05.03 .03 .00 .08 .00 .26 0 0 0 7 0 10.00 .00 .00 8.54 .00 12.20.00 .00 .00 .08 .00 .11 0 0 0 1 0 1.00 .00 .00 1.22 .00 1.22.00 .00 .00 .01 .00 .01 4 3 0 24 0 82.88 3.66 .00 29.27 .00 100.00.05 .03 .00 .27 .00 .94 33 TABLE 6C VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS C CLASSFREQUENCY (PERCENT) 2.81 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 1 1 2 0 0 0 0 0 0 0 0 5 0 10 (1) .41 .00 .00 .00 .41 .41 .81 .00 .00 .00 .00 .00 .00 .00 .00 2.03 .00 4.07 (2) .01 .00 .00 .00 .01 .01 .02 .00 .00 .00 .00 .00 .00 .00 .00 .06 .00 .11 4-7 4 1 0 1 0 20 17 7 2 0 0 0 0 0 1 5 0 58 (1) 1.63 .41 .00 .41 .00 8.13 6.91 2.85 .81 .00 .00 .00 .00 .00 .41 2.03 .00 23.58 (2) .05 .01 .00 .01 .00 .23 .19 .08 .02 .00 .00 .00 .00 .00 .01 .06 .00 .66 8-12 13 1 0 0 2 4 13 19 8 2 0 2 3 4 4 21 0 96 (1) 5.28 .41 .00 .00 .81 1.63 5.28 7.72 3.25 .81 .00 .81 1.22 1.63 1.63 8.54 .00 39.02 (2) .15 .01 .00 .00 .02 .05 .15 .22 .09 .02 .00 .02 .03 .05 .05 .24 .00 1.10 13-18 8 5 0 0 1 2 1 0 6 0 1 1 2 8 7 21 0 63 (1) 3.25 2.03 .00 .00 .41 .81 .41 .00 2.44 .00 .41 .41 .81 3.25 2.85 8.54 .00 25.61 (2) .09 .06 .00 .00 .01 .02 .01 .00 .07 .00 .01 .01 .02 .09 .08 .24 .00 .72 19-24 0 0 0 1 0 0 0 0 0 0 0 0 0 2 3 11 0 17 (1) .00 .00 .00 .41 .00 .00 .00 .00 .00 .00 .00 .00 .00 .81 1.22 4.47 .00 6.91 (2) .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .03 .13 .00 .19 GT 24 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 .00 .00 .00 .00 .00 .00 .00 .00 .00 .81 .00 .81 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .02 ALL SPEEDS 26 7 0 2 4 27 33 26 16 2 1 3 5 14 15 65 0 246 (1) 10.57 2.85 .00 .81 1.63 10.98 13.41 10.57 6.50 .81 .41 1.22 2.03 5.69 6.10 26.42 .00 100.00 (2) .30 .08 .00 .02 .05 .31 .38 .30 .18 .02 .01 .03 .06 .16 .17 .74 .00 2.81 (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)34 TABLE 6D VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS D CLASS FREQUENCY (PERCENT)

= 43.53 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-I3 56 33 36 42 33 64 70 38 26 19 12 8 8 5 19 68 0 537 (1) 1.47 .87 .95 1.10 .87 1.68 1.84 1.00 .68 .50 .32 .21 .21 .13 .50 1.79 .00 14.10 (2) .64 .38 .41 .48 .38 .73 .80 .43 .30 .22 .14 .09 .09 .06 .22 .78 .00 6.14 4-7 83 28 17 17 52 85 144 127 90 35 11 20 19 27 17 177 0 949 (1) 2.18 .74 .45 .45 1.37 2.23 3.78 3.34 2.36 .92 .29 .53 .50 .71 .45 4.65 .00 24.92 (2) .95 .32 .19 .19 .59 .97 1.65 1.45 1.03 .40 .13 .23 .22 .31 .19 2.02 .00 10.85 8-12 104 22 5 7 37 39 58 149 235 45 31 37 86 121 68 220 0 1264 (1) 2.73 .58 .13 .18 .97 1.02 1.52 3.91 6.17 1.18 .81 .97 2.26 3.18 1.79 5.78 .00 33.19 (2) 1.19 .25 .06 .08 .42 .45 .66 1.70 2.69 .51 .35 .42 .98 1.38 .78 2.52 .00 14.45 13-18 60 15 0 4 48 20 11 9 82 9 6 12 ' 89 151 80 170 0 766 (1) 1.58 .39 .00 .11 1.26 .53 .29 .24 2.15 .24 .16 .32 2.34 3.97 2.10 4.46 .00 20.12 (2) .69 .17 .00 .05 .55 .23 .13 .10 .94 .10 .07 .14 1.02 1.73 .91 1.94 .00 8.76 19-24 12 0 0 3 16 10 0 0 17 4 0 0 22 55 24 90 0 253 (1) .32 .00 .00 .08 .42 .26 .00 .00 .45 .11 .00 .00 .58 1.44 .63 2.36 .00 6.64 (2) .14 .00 .00 .03 .18 .11 .00 .00 .19 .05 .00 .00 .25 .63 .27 1.03 .00 2.89 GT 24 0 0 0 0 3 2 0 0 1 0 0 0 4 11 4 14 0 39 (1) .00 .00 .00 .00 .08 .05 .00 .00 .03 .00 .00 .00 .11 .29 .11 .37 .00 1.02 (2) .00 .00 .00 .00 .03 .02 .00 .00 .01 .00 .00 .00 .05 .13 .05 .16 .00 .45 ALL SPEEDS 315 98 58 73 189 220 283 323 451 112 60 77 228 370 212 739 0 3808 (1) 8.27 2.57 1.52 1.92 4.96 5.78 7.43 8.48 11.84 2.94 1.58 2.02 5.99 9.72 5.57 19.41 .00 100.00 (2) 3.60 1.12 .66 .83 2.16 2.52 3.24 3.69 5.16 1.28 .69 .88 2.61 4.23 2.42 8.45 .00 43.53 (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)35 TABLE6E VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS E CLASS FREQUENCY (PERCENT)

= 37.83 WIND DIRECTION FROM SPEED MPH N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW VRBL TOTAL CALM 0 0 0 0 1 0 2 0 0 0 0 (1) .00 .00 .00 .00 .03 .00 .06 .00 .00 .00 .00 (2) .00 .00 .00 .00 .01 .00 .02 .00 .00 .00 .00 C-3 108 81 52 52 49 il1 130 80 35 23 13 (1) 3.26 2.45 1.57 1.57 1.48 3.35 3.93 2.42 1.06 .70 .39 (2) 1.23 .93 .59 .59 .56 1.27 1.49 .91 .40 .26 .15 4-7 140 25 12 6 29 59 167 187 108 35 23 (1) 4.23 .76 .36 .18 .88 1.78 5.05 5.65 3.26 1.06 .70 (2) 1.60 .29 .14 .07 .33 .67 1.91 2.14 1.23 .40 .26 8-12 71 5 1 1 22 24 27 83 90 28 19 (1) 2.15 .15 .03 .03 .66 .73 .82 2.51 2.72 .85 .57 (2) .81 .06 .01 .01 .25 .27 .31 .95 1.03 .32 .22 13-18 18 0 0 0 10 5 3 13 55 14 5 (1) .54 .00 .00 .00 .30 .15 .09 .39 1.66 .42 .15 (2) .21 .00 .00 .00 .11 .06 .03 .15 .63 .16 .06 19-24 0 0 0 0 0 1 0 4 28 4 1 (1) .00 .00 .00 .00 .00 .03 .00 .12 .85 .12 .03 (2) .00 .00 .00 .00 .00 .01 .00 .05 .32 .05 .01 GT 24 0 0 0 0 0 0 0 2 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .06 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00 ALL SPEEDS 337 ill 65 59 ill 200 329 369 316 104 61 0 0 0 1 0 0.00 .00 .00 .03 .00 .00.00 .00 .00 .01 .00 .00 4.12.05 6 16 22 36 76 0 890.18 .48 .66 1.09 2.30 .00 26.90.07 .18 .25 .41 .87 .00 10.17 12 31 39 42 271 0 1186.36 .94 1.18 1.27 8.19 .00 35.84.14 .35 .45 .48 3.10 .00 13.56 19 66 78 49 242 0 825.57 1.99 2.36 1.48 7.31 .00 24.93.22 .75 .89 .56 2.77 .00 9.43 3 26 36 20 127 0 335.09 .79 1.09 .60 3.84 .00 10.12.03 .30 .41 .23 1.45 .00 3.83 1 6 7 0 15 0 67.03 .18 .21 .00 .45 .00 2.02.01 .07 .08 .00 .17 .00 .77 0 0 0 0 0 0.00 .00 .00 .00 .00 .00.00 .00 .00 .00 .00 .00 2.06.02 41 145 -182 148 731 0 3309 (1) 10.18 3.35 1.96 1.78 3.35 6.04 9.94 11.15 9.55 3.14 1.84 1.24 4.38 5.50 4.47 22.09 .00 100.00 (2) 3.85 1.27 .74 .67 1.27 2.29 3.76 4.22 3.61 1.19 .70 .47 1.66 2.08 1.69 8.36 .00 37.83 (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)36 TABLE 6F VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY.CLASS F CLASS FREQUENCY (PERCENT)

= 12.76 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 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 4 (1) .09 .09 .00 .00 .00 .00 .00 .00 .09 .00 .00 .00 .09 .00 .00 .00 .00 .36 (2) .01 .01 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .01 .00 .00 .00 .00 .05 C-3 42 47 40 23 32 45 73 36 28 14 12 9 11 7 11 24 0 454 (1) 3.76 4.21 3.58 2.06 2.87 4.03 6.54 3.23 2.51 1.25 1.08 .81 .99 .63 .99 2.15 .00 40.68 (2) .48 .54 .46 .26 .37 .51 .83" .41 .32 .16 .14 .10 .13 .08 .13 .27 .00 5.19 4-7 60 7 5 3 21 28 60 77 22 22 17 19 23 16 22 98 0 500 (1) 5.38 .63 .45 .27 1.88 2.51 5.38 6.90 1.97 1.97 1.52 1.70 2.06 1.43 1.97 8.78 .00 .44.80 (2) .69 .08 .06 .03 .24 .32 .69 .88 .25 .25 .19 .22 .26 .18 .25 1.12 .00 5.72 8-12 22 0 0 0 2 5 15 11 7 4 5 7 11 7 3 42 0 141 (1) 1.97 .00 .00 .00 .18 .45 1.34 .99 .63 .36 .45 .63 .99 .63 .27 3.76 .00 12.63 (2) .25 .00 .00 .00 .02 .06 .17 .13 .08 .05 .06 .08 .13 .08 .03 .48 .00 1.61 13-18 0 0 0 0 0 0 0 0 7 0 0 0 4 2 1 3 0 17 (1) .00 .00 .00 .00 .00 .00 .00 .00 .63 .00 .00 .00 .36 .18 .09 .27 .00 1.52 (2) .00 .00 .00 .00 .00 .00 .00 .00 .08 .00 .00 .00 .05 .02 .01 .03 .00 .19 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 125 55 45 26 55 78 148 124 65 40 34 35 50 32 37 167 0 1116 (1) 11.20 4.93 4.03 2.33 4.93 6.99 13.26 11.11 5.82 3.58 3.05 3.14 4.48 2.87 3.32 14.96 .00 100.00 (2) 1.43 .63 .51 .30 .63 .89 1.69 1.42 .74 .46 .39 .40 .57 .37 .42 1.91 .00 12.76 (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)37 TABLE 6G VERMONT YANKEE JAN 08 -DEC 08 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS G CLASS FREQUENCY (PERCENT)

= 1.63 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 4 1 2 2 1 6 9 4 3 2 0 1 2 3 2 0 42 (1) .00 2.80 .70 1.40 1.40 .70 4.20 6.29 2.80 2.10 1.40 .00 .70 1.40 2.10 1.40 .00 29.37 (2) .00 .05 .01 .02 .02 .01 .07 .10 .05 .03 .02 .00 .01 .02 .03 .02 .00 .48 4-7 2 3 1 0 4 4 11 8 2 3 2 4 6 5 3 9 0 67 (1) 1.40 2.10 .70 .00 2.80 2.80 7.69 5.59 1.40 2.10 1.40 2.80 4.20 3.50 2.10 6.29 .00 46.85 (2) .02 .03 .01 .00 .05 .05 .13 .09 .02 .03 .02 .05 .07 .06 .03 .10 .00 .77 8-12 3 0 0 0 1 1 2 1 2 2 3 3 4 3 0 6 0." 31 (0) 2.10 .00 .00 .00 .70 .70 1.40 .70 1.40 1.40 2.10 2.10 2.80 2.10 .00 4.20 .00 21.68 (2) .03 .00 .00 .00 .01 .01 .02 .01 .02 .02 .03 .03 .05 .03 .00 .07 .00 .35 13-18 0 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 3 (1) .00 .00 .00 .00 .00 .00 .00 .70 .70 .00 .00 .00 .00 .70 .00 .00 .00 2.10 (2) .00 .00 .00 .00 .00 .00 .00 .01 .01 .00 .00 .00 .00 .01 .00 .00 .00 .03 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 .0 .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 5 7 2 2 7 6 19 19 9 8 7 7 11 11 6 17 0 143 (1) 3.50 4.90 1.40 1.40 4.90 4.20 13.29 13.29 6.29 5.59 4.90 4.90 7.69 7.69 4.20 11.89 .00 100.00 (2) .06 .08 .02 .02 .08 .07 .22 .22 .10 .09 .08 .08 .13 .13 .07 .19 .00 1.63 (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)38 TABLE 6H VERMONT YANKEE JAN 08 -DEC 08 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 1 1 0 0 1 0 2 0 1 0 0 0 1 0 1 0 0 8 (1) .01 .01 .00 .00 .01 .00 .02 .00 .01 .00 .00 .00 .01 .00 .01 .00 .00 .09 (2) .01 .01 .00 .00 .01 .00 .02 .00 .01 .00 .00 .00 .01 .00 .01 .00 .00 .09 C-3 207 165 129 119 118 224 285 165 94 59 39 24 36 37 69 175 0 1945 (1) 2.37 1.89 1.47 1.36 1.35 2.56 3.26 1.89 1.07 .67 .45 .27 .41 .42 .79 2.00 .00 22.24 (2) 2.37 1.89 1.47 1.36 1.35 2.56 3.26 1.89 1.07 .67 .45 .27 .41 .42 .79 2.00 .00 22.24 4-7 289 64 35 27 109 202 408 408 224 95 53 55 79 87 85 561 0 2781 (1) 3.30 .73 .40 .31 1.25 2.31 4.66 4.66 2.56 1.09 .61 .63 .90 .99 .97 6.41 .00 31.79 (2) 3.30 .73 .40 .31 1.25 2.31 4.66 4.66 2.56 1.09 .61 .63 .90 .99 .97 6.41 .00 31.79 8-12 215 28 6 8 64 80 127 270 343 81 58 68 171 213 124 542 0 2398 (1) 2.46 .32 .07 .09 .73 .91 1.45 3.09 3.92 .93 .66 .78 1.95 2.44 1.42 6.20 .00 27.42 (2) 2.46 .32 .07 .09 .73 .91 1.45 3.09 3.92 .93 .66 .78 1.95 2.44 1.42 6.20 .00 27.42 13-18 90 20 0 4 59 27 16 26 154 23 14 16 127' 203 108 332 0 1219 (1) 1.03 .23 .00 .05 .67 .31 .18 .30 1.76 .26 .16 .18 1.45 2.32 1.23 3.80 .00 13.94 (2) 1.03 .23 .00 .05 .67 .31 .18 .30 1.76 .26 .16 .18 1.45 2.32 1.23 3.80 .00 13.94 19-24 12 0 0 4 16 11 0 4 46 9 2 1 28 64 27 128 0 352 (1) .14 .00 .00 .05 .18 .13 .00 .05 .53 .10 .02 .01 .32 .73 .31 1.46 .00 4.02 (2) .14 .00 .00 .05 .18 .13 .00 .05 .53 .10 .02 .01 .32 .73 .31 1.46 .00 4.02 GT 24 0 0 0 0 3 2 0 2 1 0 0 0 4 11 4 17 0 44 (1) .00 .00 .00 .00 .03 .02 .00 .02 .01 .00 .00 .00 .05 .13 .05 .19 .00 .50 (2) .00 .00 .00 .00 .03 .02 .00 .02 .01 .00 .00 .00 .05 .13 .05 .19 .00 .50 ALL SPEEDS 814 278 170 162 370 546 838 875 863 267 166 164 446 615 418 1755 0 8747 (1) 9.31 3.18 1.94 1.85 4.23 6.24 9.58 10.00 9.87 3.05 1.90 1.87 5.10 7.03 4.78 20.06 .00 100.00 (2) 9.31 3.18 1.94 1.85 4.23 6.24 9.58 10.00 9.87 3.05 1.90 1.87 5.10 7.03 4.78 20.06 .00 100.00 (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)39 APPENDIX A EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Supplemental Information for 2008 Facility:

Vermont Yankee Nuclear Power Station Licensee:

Entergy Nuclear Vermont Yankee IA. ODCM DOSE AND DOSE RATE LIMITS -ODCM Controls Dose Limit a. Noble Gases 3/4.3.1 3/4.3.1 3/4.3.2 3/4.3.2 3/4.3.2 3/4.3.2 Total body dose rate Skin dose rate Gamma air dose Gamma air dose Beta air dose Beta air dose 500 mrem/yr 3000 mrem/yr 5 mrad in a quarter 10 mrad in a year 10 mrad in a quarter 20 mrad in a year b. Iodine-13 1, Iodine-133, Tritium and Radionuclides in Particulate Form With Half-Lives Greater Than 8 Days 3/4.3.1 3/4.3.3 3/4.3.3 Organ dose rate Organ dose Organ dose c. Liquids 1500 mrem/yr 7.5 mrem in a quarter 15 mrem in a year'1.5 mrem in a quarter 3 mrem in a year 5 mrem in a quarter 10 mrem in a year 3/4.2.2 Total body dose 3/4.2.2 Total body dose 3/4.2.2 Organ dose 3/4.2.2 Organ dose 2A.ODCM LIMITS -CONCENTRATION ODCM Control a. Noble Gases Limit No ECL Limits b. Iodine-13 1, Iodine-133, Tritium and Radionuclides in Particulate Form With Half-Lives Greater Than 8 Days No ECL Limits A-1

c. Liquids 3/4.2.1 Sum of the fractions of ECL excluding noble gases (1OCFR20, Appendix B, Table 2, Column 2): < 1.OE+01 3/4.2.1 Total noble gas concentration:

< 2E-04 ýiCi/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 forthe gaseous isotopes present. These are used to calculate the individual isotopic releases indicated in Table lB and the totals of Table IA. The errorinvolved in these steps may be approximately

+23 percent.b. lodines Continuous isokinetic samples are drawn from the plant stack through a particulate filter and charcoal cartridge.

The filters and cartridges are normally removed weekly and are analyzed for Iodine-131, 132, 133, 134, and 135. The error involved in these steps may be approximately

+18 percent.A-2

c. Particulates The particulate filters described in b. above are also counted for particulate radioactivity.

The error involved in this sample is also approximately

+/-18 percent.d. Tritium ODCM Table 4.3.1 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

+/-10 percent.e. Waste Oil Prior to issuing the permit to burn a drum of radioactively contaminated waste oil, one liter of the oil is analyzed by gamma spectroscopy to determine concentrations of radionuclides that meet or exceed the LLD for all of the liquid phase radionuclides listed in ODCM Table 4.2.1.Monthly, samples from drums that were issued burn permits are sent to the contracted laboratory for compositing and analysis.

The lab analyzes for tritium, alpha, Fe-55, Sr-89, and Sr-90 on the composite sample.The error involved in this sample is approximately

+15 percent.f. 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 retainedof the total activity (mCi) released, concentration (pCi/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.A-3

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 There were no non-routine liquid releases during the reporting period.b. Gaseous There were no non-routine gaseous releases (measured) during the reporting period.A-4 APPENDIX B LIQUID HOLDUP TANKS Requirement Response: Technical Specification 3.8.D. 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 3.8.D. 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.The limits of Technical Specification 3.8.D. 1 were not exceeded during this reporting period.B-1 APPENDIX C RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION Requirement:

Radioactive liquid effluent monitoring instrumentation channels are required to be operable in accordance with ODCM Table 3.1.1. If an inoperable radioactive liquid effluent monitoring instrument is not returned to operable 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 inoperability 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.C-1 APPENDIX D RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION Requirement:

Radioactive gaseous effluent monitoring instrumentation channels are required to be operable in accordance with ODCM Table 3.1.2. If inoperable gaseous effluent monitoring instrumentation is not returned to operable 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 operability of radioactive gaseous effluent monitoring instrumentation were met for this reporting period, no response is required.D-1 APPENDIX E Requirement:

Response: RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM The radiological environmental monitoring program is conducted in accordance with .ODCM Control 3/4.5.1. With milk samples no longer available from one or more of the sample locations required by ODCM Table 3.5.1, ODCM 10.1 requires the following to be included in the next annual Radioactive Effluent Release Report: .(I) 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).

No changes were needed in the milk sampling locations as specified in ODCM Table 3.5.1 and implemented in ODCM Table 7.1 during the reporting year.E-1 APPENDIX F 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 2008. With the exception of the nearest residence in the S sector at 385 meters from the plant stack being vacated in July 2008, no significant land use changes from the previous year's census were identified.

As a result, 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.F-i APPENDIX G 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.G-1 APPENDIX H 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:

During the reporting period, two changes, Revision No. 31 and Revision No.32 were made to the ODCM.The major changes included in Revision 31 to the ODCM were:* Updated dispersion factors, dose/dose rate equations and dose factors associated with calculating dose and dose rates from gaseous effluents released via the plant stack to reflect a revised nominal plant stack flow rate of 146,160 cfm,* Added equations, definitions and methodology to be used in the calculation of the site boundary dose contribution from spent fuel casks stored on the ISFSI,* Revised action statement associated with the gross radioactivity release rate from the Steam Jet Air Ejector (SJAE) (Section 3/4.3.7) to remove the shutdown action statement and added reference to Technical Specification 3/4.8.K,* Removed Downey-Spencer and Cheney Hill dairy farms (TM-25 and TM-26) from the REMP sampling program due to the farms being out of business (2007).* Added Appendix J to capture BVY 04-110 and NVY 05-090, "Soil Spreading Correspondence

-Vermont Yankee and the Nuclear Regulatory Commission." The major changes included in Revision 32 to the ODCM were: Updated factors used in the Equation 6-27A, which is used to calculate the dose contribution from N- 16 in the turbine to the critical site boundary receptor location.These factors were updated based on an evaluation that was performed due to changes in plant operating conditions (i.e., 20% power uprate, intstallation of a shield plate over the high pressure section of the turbine and changes to the site landscape).

Complete copies of Revision 31 and Revision 32 of the ODCM are included on the attached CD-ROM.H-1 APPENDIX I RADIOACTIVE LIQUID, GASEOUS, AND SOLID WASTE TREATMENT SYSTEMS Requirement:

ODCM Section 10.4 requires that licensee initiated major changes to the radioactive waste systems (liquid, gaseous, and solid) be reported to the Commission in the annual Radioactive Effluent Release Report for the period in which the evaluation was reviewed by the Plant Operation Review Committee.

Response:

There were no licensee-initiated major changes to the radioactive waste systems during this reporting period.I-1 APPENDIX J ON-SITE DISPOSAL OF SEPTIC/SILT/SOIL WASTE Requirement:

Off-Site Dose Calculation Manual, Appendices B, F and I require that the dose impact due to on-site disposal of septic waste, cooling tower silt and sand/soil type materials during the reporting year and from previous years be reported to.the Nuclear Regulatory Commission in the annual Radioactive Effluent Report if disposals occur during the reporting year. Entergy Nuclear Vermont Yankee will report in the Annual Radioactive Effluent Release Report a list of the radionuclides present and the total radioactivity associated with the on-site disposal activities on the Vermont Yankee site.Response:

There was one on-site disposal of septic waste during the reporting year. The total volume of the septic waste spread in 2008 was 11,000 gallons. There was no detectable activity in the septic sludge that was disposed of during 2008. The total activity spread on the 1.9 acres (southern) on-site disposal field from 2008 spreading and from previous years was as follows: Activity from 2008, plus Activity Activity Spread in 2008 from All Past Disposals Decayed to 10/10/2008 Nuclide Mn-54 Co-60 Zn-65 Cs-134 Cs-137 Ce- 141 (Ci)0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 (Ci)1.05E-08 9.16E-06 4.79E-09 6.68E-09 2.84E-06 0.OOE+00 The maximum organ dose from all past spreading operations, including the material spread in 2008, totaled 1.00E-01 mrem/yr. These calculated values are within the 1 mrem/yr limit applied during the period of operational control of the site. The projected hypothetical dose for the period following the loss of operational control of the site area due to all spreading operations to-date is 3.79E-01 mrem/yr versus a 5 mrem/yr dose limit.J-1

BVY 09-037, Vermont Yankee - 2008 Radioactive Effluent Release Report

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BVY 09-037, Vermont Yankee - 2008 Radioactive Effluent Release Report

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