ML20073S840

Suppl Effluent & Waste Disposal Semiannual Rept for Third & Fourth Quarters,1993 Including Annual Radiological Impact on Man for 1993

ML20073S840
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	12/31/1993
From:	VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20073S838	List: ML20073S835 ML20073S840
References
NUDOCS 9407060285
Download: ML20073S840 (56)

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l SUPPLEMENTAL EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT FOR THIRD AND FOURTH QUARTERS, 1993 INCLUDING ANNUAL RADIOLOGICAL IMPACT ON MAN FOR 1993 Vermont Yankee Nuclear Power Station R12\\60

l E RR AT A In the Vermont Yankee Effluent and Waste Disposal Semiannual Report covering the third and fourth quarters of 1993, the following corrections should be made: None. Table 1A of the Semiannual Report covering the first and second quarters of 1993 was revised. The revised table is provided in the following page. i -ii-unn

TABLE 1A Vermont Yankee Effluent and Waste Disposal Semiannual Report First and Second Ouarters. 1993 Gaseous Effluents - Summation of All Releases Est. Quarter Quarter Total Unit 1 2 Error. % l I Fission and Activation Gases 1. Total release Ci <1.29E+03 <8.16E+02 il.00E+02 2. Average release rate for period uCi/sec <1.64E+02 <1.04E+02 3. Percent of Tech. Spec. limit 1.10E+01(1) 2.88E+00(2) todines 1. Total lodine-131 Ci 2.82E-03 2.63E-03 15.00E+01 2. Average release rate for period uCi/sec 3.59E-04 3.34E 04 3. Percent of Tech. Spec. limit (3) 2.04E-01 1.40E+00 Particulates 1. Particulates with T-1/2 > 8 days Ci 3.38E-03 2.31E-03 15.00E+01 i 2. Average release rate for period uCi/sec 4.30E 04 2.94E-04 i 3. Percent of Tech. Spec. limit t (4) (4) 4. Gross alpha radioactivity Ci 3.61E-06 1.44E-06 Tritium 1. Total release Ci 7.05E+00 6.96E+00 15.00E+01 2. Average release rate for period uCi/sec 8.96E-01 8.85E-01 3. Percent of Tech. Spec. limit (4) (4) ) Technical Specification 3.8.F.1.a for beta air dose. ) Technical Specification 3.8.F.1.a for gamma air dose. ) Technical Specification 3.8.G.1 for dose from I-131,1 133, Tritium, and radionuclides in particulate form. ) Per Technical Specification 3.8.G.1 dose contribution from Tritium and particulates are included with I-131 above in Part B. -iii-cruo

l j i TABLE OF CONTENTS Pace ii ERRATA 1

1.0 INTRODUCTION

3 2.0 METEOROLOGICAL DAT A........................ ? 4 3.0 DOSE ASSESSMENT.......................... f 4 3.1 Doses from Liquid Effluents................. 4 3.2 Doses From Noble Gases 3.3 Doses From lodine-131, lodine-133. Tritium. and Radionuclides in Particulate Form With Half-Lives Greater Than 8 Days..................... 5 3.4 Whole Body Doses in Unrestricted Areas From Direct 6 Radiation 3.5 Doses From On-Site Disposal of Septic Waste......... 7 8 REFERENCES 9 TABLES APPENDIX A - SUPPLEMENTAL INFORMATION. A-1 APPENDIX B - L10VID HOLDUP T ANKS B-1 APPENDIX C - RADI0 ACTIVE LIQUID EFFLUENT MONITORING C-1 INSTRUMENTATION APPENDIX 0 RADI0 ACTIVE GASE0US EFFLUENT MONITORING D-1 INST RUMENT ATION APPENDIX E - RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM E-1 APPENDIX F - LAND USE CENSUS F-1 APPENDIX G - PROCESS CONTROL PROGRAM G1 APPENDIX H - 0FF-SITE DOSE CALCULATION MANUAL. H-1 APPENDIX ! - RADI0 ACTIVE LIOUID. GASE0US AND SOLID WASTE TREATMENT SYSTEMS 1-1 APPENDIX J ON SITE DISPOSAL OF SEPTIC WASTE... J-1 -iv-mua

LIST OF TABLES Number Title Page 1A Gaseous Effluents - Summation of All Releases 9 1B Gaseous Effluents - Elevated Releases 10 1C Gaseous Effluents - Ground Level Releases 11 ID Gaseous Effluents - Nonroutine Releases 12 2A Liquid Effluents - Summation of All Releases 13 2B Liquid Effluents - Nonroutine Releases 14 3 Solid Waste and Irradiated Fuel Shipments 15 4 Maximum Off-Site Doses and Dose Commitments to Members of the Public 16 SA to SH Annual Summary of Upper Level Joint frequency Distribution 18-25 6A to 6H Annual Summary of Lower Level Joint Frequency Distribution 26-33 a m so V-m_--_ ___.______m___.___m__ _-___________._-.___________.-_-.__-__m.-_

VERMONT YANKEE NUCLEAR POWER STATION SEMI ANNUAL EFFLUENT RELEASE REPORT JULY - DECEMBER 1993

1.0 INTRODUCTION

Tables 1 through 3 list the recorded radioactive liquid and gaseous effluents and solid waste for the second six months of the year, with data summarized on a quarterly basis for both liquids and gases. Table 4 summarizes the estimated radiological dose commitments from all radioactive liquid and gaseous effluents released during the year 1993, including direct dose from fixed station sources. Tables SA through 6H report the cumulative joint frequency distributions of wind speed, wind direction, and atmospheric stability for the 12 month period, January to December 1993. Radioactive effluents reported in the Semiannual Effluent Report covering the first six I months of the year were used to determine the resulting doses for the first l half of 1993. 'l As required by Technical Specification 6.7.C.1 dose commitments resulting from the release of radioactive materials in liquids and gases were estimated in accordance with the " Vermont Yankee Nuclear Power Station 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 3) and actual measured meteorological data recorded during the reporting period.

As required by Technical Specification 6.7.C.1.b 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. However, for this reporting period no recreational activities inside the site boundary were permitted, and, as a result, no dose assessments are required. 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 Technical Specification 3.8.M.1, " Total Dose " have been exceeded during the year. Since the conditions indicated in the action statement under Technical Specification 3.8.M.2 were not entered into during the year, no additional radiation dose assessments are required. niuo i

All calculated dose estimates for this reporting period are well below the dose criteria of 10CFR Part 50, Appendix 1. t' Appendices B through H indicate the status of reportable items per the requirements of Technical Specifications 6.7.C.1 and 6.14.A. i I t nuuo

2.0 METEOROLOGICAL DATA Meteorological data was collected during this reporting period from the site's 300 foot met 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/0 and D/0 values were derived for all receptor points from the site meteorological record for each quarter using a straight-line airflow model. I All dispersion f actors have been calculated employing appropriate source configuration considerations, as described in Regulatory Guide 1.111 (Reference 1). A source depletion model as described in "Heteorology and Atomic Energy - 1968* (Reference 2) was used to generate deposition factors, assuming a constant deposition velocity of 0.01 m/sec for all stack (elevated) releases. Turbine hall roof vents are considered as ground level release i points with relative deposition rates determined from Regulatory Guide 1.111. Changes in terrain elevations in the site environment were also factored into i the meteorological models as appropriate. , usuo

i 3.0 DOSE ASSESSMENT 3.1 Doses From tiauid Effluents Technical Specification 3.8.B.1 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 i 10CFR Part 50, Appendix 1. By implementing the requirements of 10CFR Part 50. Appendix 1, Technical Specification 3.8.B.1 assures that the release of radioactive material in liquid effluents will be kept *as low as is reasonably achievable.' { Exposure pathways that could exist as a result of liquid effluents 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. The drinking water and aquatic invertebrate pathways do not exist downriver of the Vermont plant at Vernon. } i The dose analysis for the liquid pathways, given above, assumes o dilution based on a minimum regulated river flow of 1250 cfs at the Vernon Dam just below the plant discharge outfall. This results in conservative dose estimates from the liquid effluents, s i The resultant whole body and organ doses from liquid ef fluents were ~ determined by summing the contributions from all pathways at each location. i The whole body and organ doses to a member of the public from liquid effluents are given in Table 4. The estimated quarterly and annual doses due to liquid ef fluents are well below the 10CFR Part 50, Appendix ! dose criteria of Technical Specification 3.8.B.1. 3.2 Doses From Noble Gases Technical Specification 3.8.F.1 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 ef fluents from the site to areas at and beyond the site boundary to those specified in 10CFR Part 50, Appendix 1. By implementing the requirements of 10CFR Part 50, Appendix 1. Technical Specification 3.8.F.1 assures that the releases of radioactive noble gases in gaseous effluents will be kept *as low as is reasonably achievable." uruo

i t Dose estimates due to the release of noble gases to the atmosphere are typically calculated at the site boundary, and nearest resident in each of the sixteen principle compass directions, as well as the point of highest off site ground level air concentration of radioactive materials, and for each of the milk animal locations located within five miles of the plant, 3.3 Doses From lodine 131. lodine 133. Tritium, and Radionuclides in Particulato Form With Half-lives Gre,ater Than 8 Days Technical Specification 3.8.G.1 limits the organ dose to a member of the l public from iodine-131, iodine-133, tritium and radionuclides in particulate f form with half-lives greater than 8 days (hereaf ter called iodines and i particulates) in gaseous effluents released from the site to areas at and beyond the site boundary to those specified in 10CFR Part 50. Appendix 1 (7.5 mrem per quarter, and 15 mrem per year). By implementing the requirements of 10CFR Part 50, Appendix 1. Technical Specification 3.8.G.1 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 surf ace, inhalation, and ingestion of vegetables, meat and milk. Dose estimates were made at the site boundary and nearest resident in each of the sixteen principle 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 Technical Specification 3.9 D.1. 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 animal location. 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. It has also been assumed that only 50 percent of the iodine deposited from gaseous effluent is in elemental form (1 ) and is available for uptake (see p. 26 Reference 3). 2 uno

l During the first and fourth quarters, the milk animals are assumed to receive i only stored feed. 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 ) I to any age group due to iodines and particulates at any of the off-site receptor locations are reported in Table 4. These estimated organ doses are well below the 10CFR Part 50, Appendix I dose criteria of Technical Specification 3.8.G.I. 3.4 Whole-Bodv Doses in Unrestricted Areas From Direct Radiation The major source of dose, consisting of direct radiation and skyshine, from the station is due to N-16 decay in the turbine building. Because of the orientation of the turbine building on the site, and the shielding effects of I the adjacent reactor building, only the seven westerly sectors (SSW to NNW) see any significant direct radiation. High Pressure Ionization Chamber (HPIC) measurements have been made in the plant area in order to estimate the direct radiation from the station. The chamber was located at a point along the west site boundary which has been determined to receive the maximum direct radiation from the plant. Using measurements of dose rate made while the plant operated at different power levels, from shutdown to 100 percent, the total integrated dose from direct radiation over each three month period was determined by consideri.ng the quarterly gross megawatts generated. Field measurements of exposure, in units of Roentgen, were modified by multiplying by 0.6 to obtain whole-body dose equivalents, in units of rem, in accordance with recommendations of HASL Report 305 (Reference 4) for radiation fields resulting from N 16 photons. The other sources of dose, including direct radiation and skyshine, to the site boundary are from low level radioactive waste stored in the north warehouse and the low level waste storage pad facility. The annual dose is based on dose rate measurements in these two 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 on Table 4 for each oruo quarter. These site boundary doses assume a 100 percent occupancy factor, and take no credit for the shielding effect of any structure. 3.5 Doses From On-Site Disposal of Septic Waste Off-Site Dose Calculational Manual, Appendix B, requires that all applications of septage within the approved designated disposal areas be limited to ensure the dose to a maximally-exposed individual be maintained at less than 1 mrem / year to the whole body and any organ, and the dose to the inadvertent intruder be maintained at less than 5 mrem / year. The projected dose from on-site disposals of septic waste is given in Appendix J. 1 nun

REFERENCES 1. 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. 2. Mtteorology and Atomic Energy, 1968. Section 5-3.2.2, " Cloud Depletion *, pg. 204 U. S. Atomic Energy Commission July 1968. 3. Regulatory Guide 1.109, " Calculation of Annual Doses to Man From Routine Release of Reactor Effluents for the Purpose of Evaluating Compliance with 10CFR Part 50, Appendix 1", U. S. Nuclear Regulatory Commission, Office of Standards Development, Revision 1, October 1977. 4. W. M. Lowder, P. D. Raft, and G. dePlanque Burke, " Determination of N 16 Gamma Radiation Fields at BWR Nuclear Power Stations", Health and Safety Laboratory Energy Research and Development Administration, Report No. 305, May 1976. j . n m so

TABLE 1A Vermont Yankee Effluent and Weste Disposal Semiannual Report , Third and Fourth Quarters. 1993 Gaseous Effluents - Summation of All Releases Quarter Quarter Est. Total j Unit 3 4 Error. % A. Fission and Activation Gases j

1. Total release Ci

<8.85E+02 <8.00E+02 tl.00E+02

2. Averace release rate for oeriod uCi/sec

<1.13E+02 <1.02E+02

3. Percent of Tech. SDec, limit (1) 2.44E+00 1.88E+00 t

i B. lodines {

1. Total Iodine-131 Ci 5.25E-03 7.48E-04 5.00E+01

2. Average release rate for period uCi/sec 6.68E 04 9.52E-05

3. Percent of Tech. SDec limit (2) 2.17E+00 1.02E-01 C. Particulates i

1. Particulates with T-1/2 > 8 days Ci 1.67E-03 1.19E-03 t5.00E+01

2. Averaae release rate for period uti/sec 2.12E-04 1.51E-04

3. Percent of Tech. Spec, limit (3)

(3)

4. Gross alpha radioactivity C1 4.70E-06 5.18E-06 D. Tritium

1. Total release Ci 6.05E+00 3.63E+00 5.00E+01

2. Average release rate for Deriod uCi/sec 7.69E-01 4.61E-01

3. Percent of Tech. SDec. limit (3)

(3) (1) Technical Specification 3.8.F.1.a for gamma air dose. (2) Technical Specification 3.8.G.1 for dose from 1-131, 1-133, Tritium, and radionuclides in particulate form. (3) Per Technical Specification 3.8.G.1 dose contribution from Tritium and particulates are included with I 131 above in Part B. uzuo

I TABLE IB Vermont Yankee Effluent and Weste Disposal Semiannual Report Third and Fourth Quarters. 1993 i I Gaseous Effluents - Elevated Releases UI Continuous Mode Batch Mode Quarter Quarter Quarter Quarter i Nuclides Released Unit 3 4 3 4

1. Fission Gases Krypton 85 Ci

<1.16E+01 <8.56E+01 Krypton 85m Ci <4.18E+00 <2.72E+00 Krypton-87 Ci <2.27E+01 <1.98E+01 Krypton-88 Ci <1.43E+01 <9.16E+00 Xenon-133 Ci <2.67E+02 <1.03E+02 Xenon-135 Ci <2.41E+01 <1.59E+01 Xenon-135m Ci <1.13E+02 <1.17E+02 l Xenon-138 Ci <4.12E+02 <4.43E+02 Unidentified Ci Total for period Ci <8.69E+02 <7.97E+02

2. lodines lodine-131 C1 2.89E-03 7.24E-04 I

lodine-133 Ci 7.38E 03 3.21E-03 Iodine 135 Ci ND ND Total for period Ci 1.03E 02 3.93E-03 i

3. Particulates Strontium 89 Ci 3.95E-04 3.93E-04 Strontium-90 Ci

<3.61E 06 8.09E-06 Cesium 134 Ci ND NO Cesium 137 Ci 3.53E-05 3.19E-05 Barium-lanthanum-140 Ci 8.27E-04 4.37E-04 Mancanese-54 Ci 2.89E-05 7.55E-05 Chromium-51 Ci ND ND Cobalt-58 Ci ND ND Cobalt-60 Ci 2.13E 04 2.15E-04 Cerium-141 Ci 4.46E-06 ND Zinc-65 Ci ND ND Total for period Ci 1.51E-03 1.16E-03 (1) There were no batch mode gaseous releases for this reporting period. ND - Not detected at the plant stack. crue

I TABLE IC Vermont Yankee Effluent and Waste Disposal Semiannual Report Third and Fourth Ouarters 1993 Gaseous Ef fluents - Ground level Releases (2) i Continuous Mode Batch Mode (I) Ouarter Quarter Quarter Quarter i Nuclides Released Unit 3 4 3 4 l t

1. Fission Gases Krypton 85 Ci

<8.24E-02 <9.10E-01 Krypton-85m Ci <9.94E-02 <2.6BE 03 Kryoton-87 C1 <5.24E-01 <1.94E-02 Krypton-88 Ci <3.36E-01 <9.56E-03 Xenon-133 Ci <2.,12f+00 <1.08E+00 Xenon-135 Ci <5 !aE-01 <1.45E-02 Xenon-135m Ci <2.58E+00 <1.14E-01 Xenon-138 Ci <9.36E+00 <4.83E-01 Xenon-131m Ci <5.4BE 02 <2.15E-01 Total for period Ci <1.61E+01 <2.85E+00

2. Todines(2) todine-131 Ci

?.36E-03 2.49E-05 lodine-133 Ci 8.72E-04 ND lodine-135 Ci ND ND Total for oeriod Ci 3.23E-03 2.49E-05

3. Particulates(2)

Strontium-89 Ci 5.11E-05 ND Strontium 90 Ci <1,41E-06 ND Cesium-134 Ci ND ND Cesium-137 Ci 7.13E-07 ND Barium-Lanthanum-140 Ci 9.87E-05 ND Manganese-54 Ci ND 1.18E 05 Chromium-51 Ci ND ND Cobalt 58 Ci ND ND Cobalt-60 Ci ND 8.26E-06 Cerium 141 Ci 6.12E-06 ND Zinc-65 Ci ND 5.77E-06 Total for period Ci 1.58E-04 2.58E-05 (1) There were no batch mode gaseous releases for this reporting period. (2) Effluent sampling of the turbine roof ventilators as a ground level release point was initiated at the beginning of the fourth quarter 1991. ND - Not detected at the Turbine Building roof. urue

i TABLE ID j Vermont Yankee Effluent and Waste Dispossi Semiannual Report Third and Fourth Ouarters 1993 i Gaseous Effluents - Nonroutine Releases i t i i There were no nonroutine or accidental gaseous releases during this reporting l period. l i i 4 amso

TABLE 2A Vermont Yankee Effluent and Weste Disposal Semiannual Report Third and Fourth Ouarters 1993 Liauld Effluents Summation of All Releases There were no liquid releases duri 1g the third or fourth quarters of 1993, usuo

i TABLE 2B 1 Vermont Yankee Effluent and Waste Disposal Semiannual Report 5 Third and Fourth Quarters 1993 i Liauid Effluents - Nonroutine Releases i There were no liquid releases during the third or fourth quarters of 1993. 1 i l I. amso

TABLE 3 Vermont Yankee I Ef fluent and Weste Disposal Semiannual itecort Third and Fourth Quarters. 1993 . Solid Weste and irradiated Fuel Shiomenti A. Solid Weste Shipped Off Site for Burial or Disposal (Not Irradiated Fuel): ~~ tini t 6 Month Est. Total

1. Type of Waste Period Error, t

a. Spent resins, filter sludges, evaporator m'

2.42E+01 bottoms. etc. Ci 1.13E402 +7.50E401

b. Dry compressible waste, contaminated m'

4.27E+01 eauipment. etc. Ci 3.26E 01 *7.50E+01 i

c. Irradiated components, control rods, m'

etc. Ci d7.50{+01

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

a. 71nc 65 t 3.34E+01 b. Iron 55 % 6.54E+01 Cesium 137 1 2.42E+01 71nc 65 1 1.09E+01 Cobalt 60 7 2.06E+01 Cobalt 60 f 1.02E+01 Cesium 134 i 8.44E+00 Mancanese 54 7 5.67E+00 Manganese 54 i 8.70E+00 Cesium 137 1 1.85E+00

3. Solid Waste Disposition:

Number of Shiomentt Mode of Transportation Destination 5 Resin Shipments Truck Barnwell. SC 59 Partial Shipments Truck Barnwell, SC from Processor to Burial B. Irradiated fuel Shipments (Disposition): None C. Supplemental information

1) Class of solid waste containers shipped:

B5 A (unstable), SB

2) Types of containers used:

85 Strong-tight Containers. 5 Type A

3) Solidification agent or absorbent:

None 15-amso

l TABLE 4 i Vermont Yafikee .l (({1uent_and W6ste DisD0 sal Semiannual PeDort j Third and Fourth Quarters. 1993 Maximum

• Off Site Doses and Dose Commitments to Members of the Public Dose (mrem)***

1st 2nd 3rd 4th Source Ouarter Ouarter Ouarter Ouarter Year ** Liquid Effluents (a) I i Airborne Effluents Jodines and Particulates 1.53E-02 1.05E 01 1.63E 01 7.68E*03 2.91E 01 l-(1) (2) (3) (4) Noble Gates Beta Air 1.10E+00 5.07E 02 5.00E 02 7.62E 02 1.28E+00 (mrad) (5) (6) (8) (8) i Gamma Air 4.24E 01 1.44E-01 1.22E 01 9.3BE 02 7.84E 01 (mrad) (5) (7) (7) (9) Whole Body Dose from 3.94E+00 3.50E+00 2.45E+00 2.49E+00 1.24E+01 lI Facility Direct Radiation (mrem)**** r. Hypothetical Dose from 1.48E 02 On Site Septic Waste Disposal

• • Maximum
• means the largest fraction of corresponding 10CFR50, Appendix 1, dose design objective.
  • • Maxifaum' dose for the year is the sum of the maximum doses for each quarter.

This results in a conservative yearly dose estimate, but still well within the limits of 10CFR50.

• • • The numbered footnotes indicate the location of the dose receptor, age group, and organ, where appropriate.
      • Maximum receptor point, west site boundary, no resident present.

16-unn 1 I .y e -_.-._-__,,..m,_

=- (1) Child / Thyroid, $$W 300 meters. ) (2) Infant / Thyroid, SSE 5100 meters. (3) Child / Thyroid, S 500 meters. (4) Child / Bone, NW 2900 meters. (5) $$W 300 meters. (6) W 2400 meters. ,1 (7) 5 385 meters. I-(8) NW 2900 meters. (9) NW 550 meters. (a) There were no liquid releases during this reporting period. l: o l otus

• 17'

... - - -. _.. ~. -. . ~ ~ ~. -, ~. _ - -.. . -... ~.. -. _ ~ _ - ~ _. _ _ - - -. ~ - i ilI

i!l\\'

I 4 ( l TABLE SA i I Vf DMONT TANKtt JAN 93

• Drc 93 MEttomotocitAL DATA JolNT f atoutNcf Distalguilta fl 297.0 f t WIND DATA STAT lLiff CLAtt A CLAtt fatoutNCY (PERCENT) =

.52 WIND DIRECfl0N FROM i1 SPEED (MPM) N NNE ht ENE E ($E SE S$t B S$W SW WSW W WNW WW buW VatL' TOTAL 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 C3 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 4 (1) 2.27 .00 .00 2.27 .00 .00 .00 2.27 .00 .00 .00 .00 .00 2.27 .00 .00 .00 9.09 (2) .01 .00 .00 .01 .00 .00 .00 .01 .00 .00 .00 .00 .00 .01 .00 .00 .00 .05 47 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 4.55 .00 4.55 (2) .00 .00 .00 .00 .00 .00 .00 0* .00 .00 .00 .00 .00 .00 .00 .02 .00 .02 8 12 2 0 0 0 0 1 0 4 0 1 1 0 0 0 0 7 0 16 (1) 4.55 .00 .00 .00 .00 2.27 .00 9.09 .00 2.27 2.27 00 .00 .00 .00 15.91 .00 36.36 (2) .02 .00 .00 .00 .00 01 .00 .05 .00 .01 .01 .00 .00 .00 .00 .06 .00 .19 13 18 0 1 0 0 0 1 0 1 1 0 0 0 1 1 2 8 0 16 (1) .00 2.27 .00 .00 00 2.27 .00 2.27 2.27 .00 .00 00 2.27 2.27 4.55 18.18 .00 36.34 (2) .00 .01 .00 .00 .00 .01 .00 .01 .01 .00 -.00 .00 .01 .01 .02 .09 .00 19 19 2a 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 5 0 6 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 2.27 .00 11.36 .00 13.64 i (2) .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .06 .00 .07 ~ CT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 U 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 3 1 0 1 0 2 0 6 1 1 1 0 1 3 2 22 0 44 (1) 6.82 2.27 .00 2.27 .00 4.55 .00 13.64 2.27 2.27 2.27 00 2.27 6.82 4.55 50.00 _.00 100.00 (2) .04 .01 .00 .01 .00 .02 .00 .07 .01 .01 .01 .00 .01 .04 .02 .26 .00 .52 ! (1)=PERCE%T OF ALL GOOD OSSERVATIONS FOR TNlt PAGE I (2)ePEACENT OF ALL 0000 CBSERVAfl0NS FOR TMit Pitl00 ( C2 CALn (WIND SPEED LESS THAN 0t touAL 10.95 MPM) 18

.__m.~..__ 9 TABLE SB VtmmoW1 YANKit JAN 93 DEC 93 NEff0ROLOGICAL DATA J0lWT FatoutNCY Dl8Tal00fl0W 297.0 FT WluD DATA STAtlLITY CLAls O CLA$$ FatoutWCY (Pfactki) = 1.42 WIND DittCil0N FROM SPtfD(MPM) N NWt ht EWE t t$t $t $$t $ $$W SW WSW W WW WW WWW VRtL TOTAL 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 J. (D .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 i t_ C3 1 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 3 (1) .83 .00 .00 00 .83 .00 00 .00 .00 .00 .00 .00 .83 .00 .00 .00 .00 2.48 (2) .01 .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .04 47 4 0 0 0 1 0 2 2 1 1 0 0 0 0 0 9 0 20 (1) 3.31 .00 .00 .00 .83 .00 1.65 1.65 .83 .83 .00 .00 .00 .00 .00 7.44 .00 16.53 (2) .03 .00 .00 .00 .01 .00 .02 .02 .01 .01 .00 .00 00 .00 .00 .11 .00 .24 6 12 5 3 0 0 0 0 5 8 5 2 0 0 0 0 1 10 0 39 (1) 4.13 2.48 .00 .00 .00 .00 4.13 6.61 4.13 1.65 .00 .00 00 00. 83 8.26 .00 32.23 (2) 06 .04 .00 00 .00 .00 .06 .09 .06 .02 .00 .00 .00 .00 .01 .12 .00 .46 13 18 6 0 0 0 0 0 1 5 8 1 0 0 6 6 4 11 0 48 i' (1) 4.96 .00 .00 .00 .00 .00 .83-4.13 6.61 .83 .00 .00 4.% 4.96 3.31 9.09 .00 39.67 (2) .07 .00 .00 .0C .00 .00 .01 .06 .09 .01 .00 .00 .07 .07 .05 .13 .00 .56 15'-24 1 0 0 0 0 0 0 0 2 0 0 0 3 2 1 2 0 11 (1) .83 .00 .00 .00 .00 .00 .00 .00 1.65 .00 .00 .00 2.48 1.65 .83 1.65 .00 9.09 (2) .01 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00 .04 .02 .01 .02 .00 .13 $1 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 $PEEDS 17 3 0 0 2 0 8 15 16 4 0 0 10 8 6 32 0 121 (1) 14.05 2.48 .00 .00 1.65 .00 6.61 12.40 13.22 3.31 00 .00 8.26 6.61 4.96 26.45 .00 100.00 (2) .20 .04 .00 .00 02 .00 .09 .18 .19 .05 .00 .00 .12 09 .07 .38 .00 1.42 (1)tPERCt%f 0F ALL GCEO 00$tRVA110NS FOR INil PAGE (2)tPERCthi 0F ALL GOCD DettRVAfl0N$ FOR THIS PERIOD Ca CALM (WlhD $P(E0 LES$ TMAN OR EQUAL 70 95 MPM) > .--c . - -, + - - - - - .v--.- +,

.m m.__ .m m i i e i !l I TABLE SC VthMON1 YANKtt JAN 93

• Ott 93 Mtit0ROLOGICAL DATA J0lW1 Fat 0UtWCT Dilitl80fl0N 297.0 ff WIND DATA

$1AtlL11Y CLAtt C CLAll FttoutNCY (PitCENT) = 3.43 WIND DittCil0N FRON 1 SPEE0(MPM) N NNE NE ENE E ttt St $$t 8 S$W SW WSW W WWW WW NWW va8L TOTAL l, ll CAL:t 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 C3 3 0 1 0 1 1 2 1 1 0 0 0 0 0 0 0 0 to I, (1) 1.03 .00 .34 .00 .34 .34 .68 .34 .M .00 .00 .00 .00 .00 .00 .00 .00 3.42 (2) .04 .00 .01 .00 .01 01 .02 .01 .01 .00 .00 .00 .00 .00 .00 .00 .00 .12 47 8 2 0 3 0 5 5 6 6 0 1 1 0 0 3 16 0 56 ~ (1) 2.74 .68 .00 1.03 .00 1.71 1.71 2.05 2.05 .00 .34 .M .00 .00 1.03 5.48 .00 19.18 (2) .09 .02 .00 .04 .00 .06 .06 .07 .07 .00 .01 .01 .00 .00 .04 .19 00 66 8 12 8 2 0 0 0 3 7 22 15 2 3 4 3 4 5 15 0 93 (1) 2.74 .68 .00 00 .00 1.03 2.40 7.53 5.14 .68 1.03 1.37 1.03 1.37 1,71 5.14 .00 31.85 (2) .09 .02 .00 .00 .00 .04 .08 .26 18 .02 .04 05 .04 .05 .06 18 .00 1.09 i 13 18 18 5 0 0 0 0 0 2 31 2 0 3 6 12 8 14 0 101 (1) 6.16 1.71 .00 00 .00 .00 .00 .68 10.62 .68 .00 1.03 2.05 4.11 2.74 4.79 .00 34.59 (2) .21 .06 .00 .00 .00 .00 .00 .02 .36 .02 .00 .04 .07 14 .09 16 .00 1.19 19 24 2 0 0 0 0 0 0 0 4 2 0 1 1 10 7 4 0 31 (1) .68 .00 .00 .00 .00 .00 .00 .00 1.37 .68 .00 .34 .34 3.42 2.40 1.37 .00 10.62 (2) .02 .00 .00 .00 .00 00 .00 .00 .05 .02 -.00 .01 .01 .12 .08 -.05 .00 .36 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 .34 .00 .34 (2) .00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 -.00 .01 00 .01 ALL SPttDs 39 9 1 3 1 9 14 31 57 6 4 9 to 26 23 50 0 292 (1) 13.36 3.08 .34 1.03 .34 3.08 4.79 10.62 19.52 2.05 1.37 3.08 3.42 8.90 7.88 17.12 .00 100.00 (2) 46 .11 .01 .04 .01 .11 16 .36 .67 .07 .05 .11 .12 .31 .27 .59 .00 3.43 (1).PttCENT OF ALL 0000 destaVA110Ns FOR fuls PAGE (2)*PttCENT OF ALL 00G) OsSERVAtl0NS FOR This Pttl0D Ca CALM (WINO $ PEED LES$ THAN OR (OUAL 10.95 MPN) 4 -20 ~

TABLE $D VitMONT YANKtt JAu 93 Ott'93 Mt1EORotoclCAL DATA J0lWT f atouthCY DititlBU110W 297.0 FT WIND DATA STAllLiff CLAtt 0 CLAtt f at0UtWCY (PERCtWT)

• 49.92

? WIND DitEC110W FROM $PtED(MP ) W WWE WE INE E t&E st $$t S $$W sw Wsw W WW WW svW ytet total CALQ 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 d I (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C3 48 33 30 31 35 32 67 52 30 25 12 11 17 13 27 43 0 506 i (1) 1.13 .78 .71 .73 .82 .75 1.58 1.22 .71 .59 .28 .26 40 .31 .64 1.01 .00 11.92 (2) .56 .39 .35 .36 .41 .38 .79 .61 .35 .29 .14 .13 .20 .15 .32 .51 .00 5.95 47 110 35 19 19 39 69 175 121 92 31 20 12 10 22 40 186 0 1000 t (1) 2.59 .82 45 45 .92 1.63 4.12 2.85 2.1T . 73 .47 .28 .24 .52 94 4.38 .00 23.56 (2) 1.29 41 .22 .22 46 .81 2,06 1.42 1.08 .36 .24 .14 12 .26 47 2.19 .00 11.76 8 12 139 32 13 7 5 19 56 131 246 64 14 16 47 80 55 227 0 1151 (1) 3.27 .75 .31 .16 12 45 1.32 3.09 5.80 1.51 .33 .38 1.11 1.88 1.30 5.35 .00 27.11 (2) 1.63 .38 .15 .08 06 .22 .66 1.54 2.89 .75 .16 .19 .55 94 .65 2.67 .00 13.53 13 18 213 45 6 4 3 4 13 16 138 40 14 17 56 154 99 219 0 1041 (1) 5.02 1.06 14 .09 .07 .09 .31 .38 3.25 94 .33 40 1.32 3.63 2.33 5.16 .00 24.52 (2) 2.50 .53 .07 .05 .04 .05 .15 .19 1.62 47 16 .20 .66 1,81 1.16 2.58 .00 12.24 19 24 82 4 0 1 2 0 0 4 40 8 1 3 16 89 49 119 0 418 (1) 1.93 .09 .00 .02 .05 .00 .00 .09 .94 .19 .02 .07 .38 2.10 1.15 2.50 .00 9.85 i (2) .05 .00 .01 .02 .00 .00 .05 .47 09 .01 .04 .19 1.05 .58 1.40 00 4.92 Cf 24 4 0 0 0 0 0 0 1 11 5 0 0 6 26 8 68 0 129 (1) 09 .00 .00 .00 .00 .00 .00 .02 .26 .12 .00 .00 .14 .61 .19 1.60 .00 3.04 (2) .05 .00 .00 .00 .00 .00 .00 .01 .13 .06 .00 .00 .07 .31 .09 .80 .00 1.52 i ALL settDs $96 149 68 62 84 124 311 325 557 173 61 59 152 384 278 662 0 4245 (1) 14.04 3.51 1.60 1,46 1.98 2.92 7.33 7.66 13.12 4.08 1.44 1.39 3.58 9.05 6.55 20.31 .00 100.00 (2) 7.01 1.75 .80 .73 .99 1.46 3.66 3.82 6.55 2.03 .72 .69 1,79 4.52 3.27 10.14 .00 49.92 (1).PttCtWT OF ALL GO@ OS5ttVAll0N$ FOR THis PAGE (2): PERCENT OF ALL 0000 06stRVAT10k$ FOR INil Pttl(O Cs CALM (WIND $Pito LESS THAW OR EQUAL 10.95 MPN) l

l } i IM LE..5E } i t' VERMONT TAWKit JAN 93

• Ott 93 Mtitut0LOGitAL DAT A J0luf FRE0d[WCf Dltitl80110N 297.0 FT WIMO DATA STA8ILiff CLA$$ E CLAS$ f tt0UEWCY (Pitetuf) = 31.20 WIND DittCil0W FROM stitD(MPN) u Wkt kt Ett t Ett Et st!

$ stW SW VtW W WW W kWW vtBL TOTAL CALM 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 2 I (1) .00 .00 .00 .00 .00 .00 04 .00 00 .00 .00 .00 .04 .00 .00 .00 .00 .08 I (2) .00 .00 00 .00 .00 .00 .01 .00 00 .00 .00 .00 .01 .00 .00 .00 .00 .02 l C3 82 55 49 35 48 54 72 52 22 13 9 8 21 to 19 62 0 615 (1) 3.09 2.07 1.85 1.32 1.81 2.04 2.71 1.M .83 49 .34 .30 .79 .53 .72 2.34 .00 23.18 (2) 96 .65 .58 41 .56 .63 .85 .61 .26 15 11 .09 .25 .16 .22 73 .00 7.23 67 134 20 5 8 12 36 127 147 83 32 12 11 19 27 52 236 0 961 (9) 5.05 .75 .19 .30 45 1.36 4.79 5.54 3.13 1.21 45 41 .72 1.02 1.% 8.90 .00 36.22 (2) 1.58 .24 .06 .09 .14 42 1,49 1.T3 98 .38 .14 13 .22 .32 .61 2.78 .00 11.30 8 12 76 10 0 1 1 8 36 111 85 31 18 17 40 54 43 166 0 697 (1) 2.86 .38 .00 .04 .04 .30 1.36 4.18 3.20 1.17 .68 .64 1.51 2.04 1.62 6.26 .00 26.27 (2) .89 .12 .00 .01 .01 .09 42 1.31 1.00 .36 .21 .20 47 .63 .51 1.95 .00 8.20 ) 13 18 42 2 0 0 0 0 15 17 42 24 4 2 19 54 23 68 0 312 (1) 1.58 .08 .00 .00 .00 .00 .57 .64 1.58 90 15 08 .72 2.04 .87 2.56 .00 11.76 (2) .49 .02 .00 .00 .00 .00 .18 .20 49 .28 .05 .02 .22 .63 .27 .80 .00 3.67 6 19 24 9 0 0 0 0 0 0 3 8 4 1 0 1 9 1 20 0 56 (1) .34 .00 .00 .00 .00 .00 .00 .11 .30 15 .04 .00 .04 .34 .04 .75 .00 2.11 (3) .11 .00 .00 .00 .00 .00 .00 .04 .09 .05 .01 00 .01 .it' .01 .24 .00 .66 GT 24 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 7 0 10 (1) 04 .00 .00 .00 .00 .00 .00 .00 .00 00 .00 00 00 04 .04 .26 .00 .38 (2) .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 00 00 .00 .01 .01 .08 .00 .12 ALL SPEEDS 344 87 54 44 61 98 251 330 240 104 44 38 101 159 139 559 0 2653 (1) 12.97 3.28 2.04 1.66 2.30 3.69 9.46 12.44 9.05 3.92 1.66 1.43 3.81 5.99 5.24 21.07 .00 100.00 (2) 4.05 1.02 .63 .52 .72 1.15 2.95 3.88 2.82 1.22 .52 45 1.19 1.87 1.63 6.57 .00 31.20 (1)* PERCENT OF ALL 00CD Cs$ttvATIONS FOR TNis PAGE (2)cPitCthi 0F ALL GOCD OB$ttVATIONS FOR 1NIS PEtlCD to CALM (W]ND SPitD LEss ThAN OR touAL 10 95 NPN) I

I s } TABLI' SF j I VER:3ONT TAhKlf JAN 93

• OtC 93 Mtit0ROLOGICAL DATA JOINT FREQUCNCT DillRIBUTION 297.0 FT WIND DATA

$1A81Llif CLAtt F CLAtl FREQUENCT (PERCtWT) e 11.27 } WIN 0 Oltttil0W FR34 IPEED(NPM) W NW[ >[ (W[ [ [El $E $$t S $$W SV VsV W WW NW WWW VRBL TOTAL 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 C3 34 45 28 17 20 20 34 21 22 12 4 9 8 6 9 31 0 320 (1) 3.55 4.70 2.92 1.77 2.09 2.09 3.55 2.19 2.30 1.25 42 .94 .84 .63 .94 3.24 .00 33.40 (2) 40 .53 .33 .20 .24 .24 40 .25 .26 .14 .05 .11 .09 .07 .11 .36 .00 3.76 47 44 25 2 5 14 20 61 62 30 9 8 15 6 12 19 73 0 405 (1) 4.59 2.61 .21 .52 1.46 2.09 6.37 6.47 3.13 .94 .84 1.57 .63 1.25 1.98 7.62 .00 42.28 (2) .52 .29 .02 .06 .16 .24 .72 .73 .35 .11 .09 18 .07 .14 .22 .86 .00 4.76 8 12 20 1 0 1 1 2 11 22 10 11 6 3 5 22 12 78 0 205 (1) 2.09 10 00 .10 .10 .21 1.15 2.30 1.04 1.15 .63 .31 .52 2.30 1.25 8.14 .00 21.40 (2) .24 .01 .00 .01 .01 .02 .13 .26 .12 .13 .07 .04 .06 .26 .14 .92 .00 2.41 13 18 4 0 0 0 0 0 1 1 3 1 0 1 3 2 0 10 0 26 (1) 42 .00 .00 .00 .00 .00 .10 10 .31 .10 .00 .10 .31 .21 .00 1.04 .00 2.71 (2) .05 .00 .00 .00 .00 00 .01 .01 .04 .01 .00 .01 .04 .02 .00 12 .00 .31 19 24 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 (1) .10 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .10 .00 .21 (2) .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 01 .00 .02 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 103 71 30 23 35 42 107 106 65 33 18 28 22 42 40 193 0 958 (1) 10.75 7.41 3.13 2.40 3.6s 4.38 11.17 11.06 6.78 3.44 1.88 2.92 2.30 4.38 4.18 20.15 .00 100.00 (2) 1.21 .83 .35 .27 .41 49 1.26 1.25 .76 .39 .21 .33 .26 49 47 2.27 .00 11.27 (1). PERCENT OF ALL GOOD 08SERVA110NS FOR TNlt PAC.E (2). PERCENT OF ALL 00CD OBSERVA110NS FOR INil PERIOD C. CALM (WIND SPEED LEst ikAm OR touAL 10 95 MPW) _ _ _ ____-__..__m__

TABLE 50 i i f 4 YERMONT TANtti JAN 93 Dtc 93 MEff 0ROLOGICAL DATA JOINT Fat 00tNCY DilitlBUTION 297.0 FT WIND DATA $fA31LITY CLAll G CLA55 FREQUtWCT (PitttNT) = 2.25 WIND DittCTION FROM EPtt0(MPH) N NNE NE ENE E ESE $t $$t $ $$V SV V5W W WWW NW NNW VRBL TOTAL f CALM 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 00 .52 .00 .00 .00 .00 400 .00 .52 { (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 00 .00 .00 .00 .01 C3 2 2 2 4 5 0 5 3 7 6 3 2 2 1 1 3 0 48 (1) 1.05 1.05 1.05 2.09 2.62 .00 2.62 1.57 3.65 3.14 1.57 1.05 1.05 .52 .52 1.57 .00 25.13 (2) .02 .02 .02- .05 .06 .00 .06 .04 .08 .07 .04 .02 .02 01 .01 .04 .00 .56 l 1 47 6 1 2 1 4 1 8 12 4 5 8 6 2 3 2 11 0 76 (1) 3.14 .52 1.05 .52 2.09 .52 4.19 6.28 2.09 2.62 4.19 3.14 1.05 1.57 1.05 5.76 .00 39.79 (2) .07 .01 02 .01 .05 .01 .09 .14 .05 .06 .09 .07 .02 .04 .02 .13 .00 .89 8 12 12 0 0 0 0 1 0 7 2 1 2 0 1 6 1 17 0 50 (1) 6.28 .00 00 .00 .00 .52 .00 3.66 1.05 .52 1.05 .00 .52 3.14 .52 8.90 .00 26.18 (2) .14 .00 .00 .00 .00 .01 .00 .08 .02 .01 .02 .00 .01 .07 .01 .20 .00 .59 13 18 2 0 0 0 0 0 0 0 0 0 0 0 0 3 0 10 0 15 (1) 1.05 .00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1.57 .00 5.24 .00 7.85 (2) .02 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .04 .00 .12 .00 .18 19 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 .52 .00 .52 (2) .00 .00 00 .00 .00 .00 00 .00 .00 .00 .00 .00 .00 '. 00 .00 .01 .00 .01 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 $PttD$ 22 3 4 5 9 2 13 22 13 12 14 8 5 13 4 42 0 191 (1) 11.52 1.57 2.09 2.62 4.71 1.05 6.81 11.52 6.81 6.28 7.33 4.19 2.62 6.81 2.09 21.99 .00 100.00 (2) .26 .04 .05 .06 .11 .02 15 .26 .15 .14 16 .09 .06 .15 .05 49 .00 2.25 (1)*PtattWT OF ALL 0000 OsttavAtl0NS FOR TWil PAGE (2)* PERCENT OF ALL GOOD 06$tRVAfl0NS FOR THIS Pttl0D Co CALN (WIND SPEED Lt$$ TRAN On touAL To.95 MPM) - _ _ _- - -_-_____ _ _ _ - - _ _ - _ _ _ _ _ _ _ _ - _.

i TABl.E SH VttMONT YAWrit JAN 93 Dtc 93 MtitoR0 LOGICAL DATA JolWT FRtoutWCY DisfalBUTioW 297.0 FT WlND DATA LTA81LITT CLASS ALL CLASS FREQUtWCY (PitCth!) e 100.00 WIND DittCTION FROM SPitD(mph) N NWE WE INE E Ett St $$t S SSV SW VSV W WWW WW WWW VtBL TOTAL CALM 0 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 0 3 (1) .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .01 .00 .01 .00 .00 .00 .00 .04 (2) .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .01 .00 .01 .00 .00 .00 .00 .04 C3 171 135 110 88 110 107 180 130 82 56 28 30 49 35 56 139 0 1506 (1) 2.01 1,59 1.29 1.03 1.29 1.26 2.12 1.53 .96 .66 .33 .35 .58 41 .66 1.63 .00 17.71 (2) 2.01 1.59 1.29 1.03 1.29 1.26 2.12 1.53 .96 .66 .33 .35 .58 41 .66 1.63 .00 17.71 47 306 83 28 36 70 131 378 350 216 78 49 45 37 64 116 533 0 2520 (1) 3.60 .98 .33 42 .82 1.54 4.44 4.12 2.54 .92 .58 .53 44 .75 1.36 6.27 00 29.63 (2) 3.60 .98 .33 .42 .82 1.54 4.44 4.12 2.54 .92 .58 .53 44 .75 1.36 6.27 .00 29.63 8 12 262 48 13 9 7 34 115 305 363 112 44 40 % 166 117 520 0 2251 (1) 3.08 .56 .15 .11 .08 40 1.35 3.59 4.17 1.32 .52 .47 1.13 1.95 1.38 6.11 00 26.47 (2) 3.08 .56 .15 .11 .08 40 1.35 3.59 4.27 1.32 .52 47 1.13 1.95 1.38 6.11 00 26.47 13 18 285 53 6 4 3 5 30 42 223 68 18 23 91 232 136 340 0 1559 (1) 3.35 .62 .07 .05 .04 .06 .35 .49 2.62 .80 .21 .27 1.07 2.73 1.60 4.00 00 18.33 (2) 3.35 .62 .07 .05 .04 .06 .35 .49 2.62 .80 .21 .27 1.07 2.73 1.60 4.00 00 18.33 19 24 95 4 0 1 2 0 0 7 54 14 2 4 21 111 58 152 0 525 (1) 1.12 .05 .00 .01 .02 .00 .00 .08 .63 .16 .02 .05 .25 1.31 .68 1.79 00 6.17 (2) 1.12 .05 .00 .01 .02 .00 .00 .08 63 .16 .02 .05 .25 1.31 .68 1.79 00 6.17 CT 24 5 0 0 0 0 0 0 1 11 5 0 0 6 27 9 76 0 140 (1) .06 .00 .00 .00 .00 .00 .00 .01 13 .06 .00 .00 .07 .32 .11 .89 00 1.65 (2) .06 .00 .00 .00 .00 .00 .00 .01 13 .06 .00 .00 .07 .32 .11 .89 00 1.65 ALL SPttDS 1124 323 157 138 192 277 704 835 949 333 142 142 301 635 492 1760 0 8504 (1) 13.22 3.80 1.85 1.62 2.26 3.26 8.28 9.82 11.16 3.92 1,67 1.67 3.54 7.47 5.79 20.70 00 100.00 (2) 13.22 3.80 1.85 1.62 2.26 3.26 8.28 9.82 11.16 3.92 1.67 1.67 3.54 7.47 5.79 20.70 00 100.00 (1)ePERCthi 0F ALL COCD OB$ttvATIONS FOR THit PAGE (2)*PERCEMT OF ALL GOOO OBSERVATIONS FOR THit PitlCD Ce CALM (WIND SPEED Lits THAN OR EQUAL To.95 MPN) __ .____.m____

li i TABLE 6A VIRMONT TAkKf( JAN 93 DEC 93 MEft0ROLOGICAL DATA JolNT ftt0VENCY DISTRIBU180N 35.0 ff WIND DATA stABILifY CLAtt A CLA$$ f tEQUENCY (PERCEWT) a 1.26 WIND DIRECT 10N f t0M CPEED(MPN) N NME NE ENE E ESE $1 SSE $ SSV SV WW W WNW WW kNW VtBL TOTAL 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 C3 0 1 1 1 2 0 0 2 0 0 0 0 0 0 0 1 0 8 (1) .00 .99 .99 .99 1.98 .00 .00 1.98 .00 .00 .00 .00 .00 .00 .00 .99 .00 7.92 (2) .00 .01 .01 .01 .02 .00 .00 .02 .00 .00 .00 00 .00 .00 .00 .01 .00 .10 t i 47 8 3 1 0 0 0 5 3 2 0 0 0 2 0 1 14 0 39 (1) 7.92 2.97 .99 .00 .00 .00 4.95 2.97 1.98 .00 .00 .00 1.98 .00 .99 13.86 .00 38.61 (2) .10 .04 .01 .00 .00 .00 .06 .04 .02 .00 .00 .00 .02 .00 .01 .1T .00 .49 8 12 6 1 0 0 0 1 0 7 4 1 1 0 4 7 4 18 0 54 (1) 5.94 .99 .00 00 .00 .99 .00 6.93 3.96 .99 .99 .00 3.% 6.93 3.96 17.82 .00 53.47 (2) .07 .01 .00 .00 .00 .01 .00 .09 .05 .01 .01 .00 .05 .09 .05 .22 .00 .67 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 CT 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 EPEEDs 14 5 2 1 2 1 5 12 6 1 1 0 6 7 5 33 0 101 (1) 13.J 4.95 1.98 .99 1.98 .99 4.95 11.88 5.94 .99 .99 .00 5.94 6.93 4.95 32.67 00 100.00 (2) .17 .06 .02 .01 .02 .01 .06 .15 .07 .01 .01 .00 .07 .09 .06 41 .00 1.26 (1)sPitCENT Of ALL Com 08SEtvAfl0NS FOR TNls PAGE (2)*PitCEN10F ALL Co@ 00$ERVAtl0NS FOR THIS PEtt0D Ce CALM (WIND SPEED LESS THAN OR EQUAL 70.9$ MPN) 26-

i. TABLE 6B Vttn3NT TANK!! JAN 93 DEC 93 Mtit0R0 LOGICAL DATA JQlNT Ikt0UENCY DISTRIBUTION 35.0 ff WIND DATA STABILITY CLAtt t CLAts FRiouthtv (Pf attNT) = 1.68 WIND DittC110N FRCm SPitD(r.PM) N Nkt NE ENE E Ett St $$t 5 tSW SW WSW W WWW WW NNW VtBL TOTAL 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 C3 0 0 0 0 3 0 0 1 0 1 0 0 0 0 0 0 0 5 (1) .00 .00 .00 .00 2.22 .00 .00 .74 .00 .74 .00 .00 .00 .00 .00 .00 .00 3.70 (2) .00 .00 .00 .00 04 .00 .00 .01 .00 .01 .00 00 .00 .00 .00 .00 .00 .06 47 12 3 0 1 3 1 6 6 2 1 1 1 0 0 4 16 0 57 (1) 8.89 2.22 00 .74 2.22 74 4.44 4.44 1.48 .74 .74 .74 .00 .00 2.96 11.85 .00 42.22 (2) 15 .04 .00 .01 04 .01 .07 .07 .02 .01 .01 .01 .00 00 .05 .20 .00 .71 8 12 13 8 0 0 0 0 1 6 8 1 0 1 5 4 5 6 0 58 (1) 9.63 5.93 .00 .00 00 .00 .74 4.44 5.93 .74 .00 .74 3.70 2.96 3.70 4.44 .00 42.% (2) .16 .10 .00 .00 00 00 01 .07 .10 .01 .00 .01 .06 .05 .06 .07 .00 .72 13 18 0 0 0 0 0 0 0 0 5 0 1 2 0 3 2 2 0 15 (1) .00 .00 .00 .00 .00 .00 .00 00 3.70 .00 .74 1.48 .00 2.22 1.48 1.48 .00 11.11 (2) .00 .00 .00 .00 .00 .00 .00 .00 .06 .00 .01 .02 .00 .04 .02 .02 .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 Cf 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 $Pito$ 25 11 0 1 6 1 7 13 15 3 2 4 5 7 11 24 0 135 (1) 18.52 8.15 .00 .74 4.44 .74 5.19 9.63 11.11 2.22 1.48 2.96 3.70 5.19 8.15 17.78 .00 100.00 (2) .31 14 00 .01 .07 .01 .09 16 19 .04 .02 .05 .06 .09 .14 .30 .00 1.68 (1)= PERCENT of ALL 003) 00$tRVAfl0NS FOR THIS PAGE (2)= PERCENT OF ALL GC00 085ttVA110NS FOR TNil PERIOD C= CALM (WIND SPitD LESS TKAN OR EQUAL 10.95 MPM) _ _ - - - - - _ _ _ _ _ _ _ _ - - _ _ _ _ - _ _ _ - _ - _ _ - _ _ _ - _ _

f TABLE 6C j i i YtRMONT YANK!E JAN 93 DEC 93 Mt1EOROLOGICAL DATA Jolkt ikt0VtWCY DI$illBU110N i 35.0 F1 WIND DATA $1A81L11Y CLA$$ C CLAls itEQUENCY (Pitetut) = 3.81 WluD DittCil0N Fttet $PitD(MPN) N kNE k[ (W[ E ESE St $$E $ $$W $W VSW W WWW WW kWW VRBL TOTAL CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 l (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 l l C3 2 0 1 5 0 1 0 2 1 0 0 0 0 0 0 3 0 15 ~ (1) .65 .00 .33 1.63 .00 .33 .00 .65 .33 .00 .00 .00 .00 .00 .00 .98 .00 4.90 (2) .02 .00 .01 .06 .00 .01 .00 .02 .01 .00 .00 .00 .00 .00 .00 .04 .00 .19 47 15 5 2 4 12 11 18 10 15 3 1 3 4 4 6 20 0 133 (1) 4.90 1.63 .65 1.31 3.92 3.59 5.88 3.27 4.90 .98 .33 98 1.31 1.31 1.96 6.54 .00 43.46 (2) .19 .06 .02 .05 .15 .14 .22 .12 .19 .04 .01 .04 .05 .05 .07 .25 .00 1.66 8 12 21 8 0 0 4 1 2 11 27 2 5 3 12 13 8 16 0 133 (1) 6.86 2.61 .00 .00 1.31 .33 .65 3.59 8.62 .65 1.63 .98 3.92 4.25 2.61 5.23 .00 43.46 (2) .26 10 .00 .00 .05 .01 .02 .14 .34 .02 .06 .04 .15 .16 .10 .20 .00 1.66 13 18 2 1 0 0 0 0 0 0 5 0 1 0 1 5 7 3 0 25 (1) .65 .33 .00 .00 .00 .00 .00 .00 1.63 .00 .33 .00 .33 1.63 2.29 98 .00 8.17 (2) .02 .01 .00 .00 .00 .00 .00 .00 .06 .00 .01 .00 .01 .06 .09 .04 .00 .31 19 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL $ PIED $ 40 14 3 9 16 13 20 23 48 5 7 6 17 22 21 42 0 306 (1) 13.07 4.58 .98 2.94 5.23 4.25 6.54 7.52 15.69 1.63 2.29 1.% 5.56 7.19 6.86 13.73 .00 100.00 (2) .50 17 .04 .11 .20 .16 .25 .29 .60 .06 .09 .07 .21 .27 .26 .52 .00 3.81 (1)sPERCEWT Of ALL 00CD OB$tRVAfl0N$ FOR INIS PAGE (2)=PERCEN1 Of ALL COG) 06 SERVAT 10NS FOR This PERICD Ce CALM (WIND $P[ED L[$$ IkAh OR EQUAL 10.95 MPN) _

] TABLE 6D VTR*:N1 YAWKEt JAN 93 DEC 93 MtitoRotoclCAL DATA JolWT FatoutwCY DistRIBUTIDW 35.0 FT Wluo DATA STASILITY CLAtt D CLAll FREQU(WCY (PEtttW1)

• 43.21 i

WikD Ditttil0N FROM l ErtID(MPM) N uwt NE tht t t$1 Et sst 8 ssW sw br.V W WWW WW uwW vpBL TOTAL CALM i 0 0 0 1 0 0 0 2 0 1 0 1 0 1 1 0 8 (1) .03 .00 .00 .00 .03 .00 .D0 .00 .D6 .00 .03 .00 .03 .00 .03 .03 .00 .23 (2) .01 .00 . D0 .00 .01 .D0 .00 .00 .02 .00 .01 .00 .01 .00 .01 .01 .00 .10 C3 84 57 59 47 58 36 40 66 63 41 25 25 27 43 59 81 0 811 (1) 2.42 1.64 1.70 1.56 1.67 1.04 1.15 1.90 1.E2 1.18 . 72 . T2 . 78 1.24 1.7D 2. 54 .D0 23.39 (2) 1.05 .71 .74 .59 . 72 .45 .50 .82 .79 .51 .31 .31 .34 .54 .74 1.01 .00 10.11 47 198 69 25 31 61 71 77 139 153 42 18 17 46 52 114 290 0 1403 (1) 5.71 1.99 . T2 .89 1.76 2.05 2.22 4.01 4.41 1.21 .52 49 1.33 1.50 3.29 8.56 .00 40.46 (2) 2.47 .66 .31 .39 .76 .88 .96 1.73 1.91 .52 .22 .21 .57 .63 1.42 3.61 .00 17.48 8 12 207 65 15 3 4 9 5 20 156 24 19 16 52 122 87 168 0 952 (1) 5.97 1.87 43 .D9 .12 .26 .14 .58 3.92 .69 .55 46 1.50 3.52 2.51 4.84 .00 27.45 (2) 2.58 .81 .19 .D4 .05 .11 .D6 .25 1.69 .30 .24 .20 .65 1.52 1.08 2.D9 .00 11.66 13 18 39 9 0 1 2 0 0 1 32 7 2 1 9 B0 50 32 0 265 (1) 1.12 .26 . D0 .03 .06 .00 .00 .03 .92 .20 .06 .03 .26 2.31 1.44 .92 .00 7.64 (2) .49 .11 .00 .01 .02 .00 .00 .01 .40 .09 .02 .01 .11 1.D0 .62 .40 .00 3.30 19 24 0 0 0 0 0 0 0 0 9 0 0 0 4 9 5 2 0 29 (1) . D0 .00 .00 .00 .00 .00 .00 .00 .26 .00 .00 .00 .12 .26 .14 .D6 .00 . 64 (2) .00 .D0 .00 .00 .00 .00 .00 .00 .11 .00 .00 .00 .05 .11 .D6 .02 .00 .36 CT 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 . D0 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL $Pttes $29 200 99 E2 126 116 122 226 3 95 114 65 59 139 106 316 574 0 5468 (1) 15.25 5.T7 2.85 2.36 3.63 3.34 3.52 6.52 11.39 3.29 1.87 1.70 4.01 8.82 9.11 16.55 .D0 100.00 (2) 6.59 2.49 1.Z3 1.02 1.57 1.45 1.52

2. 62 4.92 1.42

.81 .74 1.73 3.81 3.94 7.15 .00 43.21 (1)mPERCEWT OF ALL 00@ OBSERVAfl0W5 FOR TNil PAGE (2)* PERCENT OF ALL Go@ DB$tRVAfl0NS FOR TMit PERIOD C= CALM (WIND $PitD Ltss 1NAW OR touAL 10.95 MPM) 29-

1 TABLE 6E f. VERMONT YAktt! JAN 93

• DEC 93 M11EOROLOGICAL DATA J0lW1 FREQUENCY DillRIBJ110W 35.0 ft WIND DATA

$1Alltiff CLA$$ ( CLAS$ FREQUENCY (P[RC(N1) e 32.45 WIND DlttC110N FROM $PitD(MPM) N NN[ k[ [N[ [ [$[ $t $$( $ $$W $V WSV W WNW kW WNW VR$L TOTAL CALM 2 1 2 1 0 0 0 1 1 4 3 4 8 2 2 3 0 34 (1) .08 .04 .08 .04 .00 .00 00 .04 .04 .15 12 15 .31 .08 .08 .12 .00 1.31 (2) .02 .01 .02 .01 .00 .00 .00 .01 .01 .05 .04 05 10 .02 .02 .04 .00 .42 C3 85 45 26 25 29 34 57 67 76 til 164 121 130 120 147 142 0 1153 (1) 3.26 1.73 1.00 96 1.11 1.31 2.19 2.57 2.92 4.42 6.30 4.65 4.99 4.61 5.65 5.45 .00 53.11 (2) 1.06 .56 .32 .31 .36 42 .71 .&3 .95 1.43 2.04 1.51 1.62 1.50 1.83 1.77 .00 17.23 I 47 56 12 4 1 15 32 53 118 93 36 17 26 62 64 99 193 0 881 (1) 2.15 46 15 .04 .58 1.23 2.04 4.53 3.57 1.38 .65 1.00 2.38 2.46 3.80 7.41 .00 33.83 (2) 70 .15 .05 .01 .19 40 .66 1,47 1.16 .45 .21 .32 .TT .80 1.23 2.40 .00 10.98 8 12 21 2 0 0 1 0 5 20 47 11 4 5 17 43 39 48 0 263 (1) .81 .08 .00 .00 .04 00 .19 .77 1.80 .42 15 .19 .65 1.65 1.50 1.84 .00 10.10 (2) .26 .02 .00 .00 .01 .00 .06 .25 .59 .14 .05 .06 .21 .54 .49 .60 .00 3.28 13 18 1 0 0 0 0 0 0 0 14 0 0 0 5 12 5 4 0 41 (1) 04 .00 .00 .00 .00 00 .00 .00 .54 .00 .00 .00 .19 46 .19 15 .00 1.57 (2) 01 .00 .00 .00 .00 .00 .00 .00 .17 .00 .00 .00 .06 .15 06 .05 .00 .51 19 24 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 2 (1) .00 .00 .00 .00 .00 00 .00 .00 .00 .00 00 .00 .00 .04 .04 .00 00 08 (2) 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .01 .00 .00 .02 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) 00 .00 .00 .00 00 .00 .00 .00 .00 .00 00 .00 .00 00 00 .00 .00 00 (2) .00 .00 .00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL $Ptt0S 165 60 32 27 45 66 115 206 231 166 188 156 222 242 293 390 0 2604 (1) 6.34 2.30 1.23 1.04 1.73 2.53 4.42 7.91 8.87 6.37 7.22 5.99 8.53 9.29 11.25 14.98 .00 100.00 (2) 2,06 .75 40 .34 .56 .82 1.43 2.57 2.88 2.07 2.34 1.94 2.77 3.02 3.65 4.86 .00 32.45 (1)ePERCENT OF ALL C000 OB$tRVAfl0NS FOR TNil PAGE (2)sPERCEN1 OF ALL C000 OS$tRVAil0NS FOR Twit PERIOD Ce CALM (WIND SPEED Lt$$ THAN OR EQUAL 10.9$ MPH) _ _ _ _ _ _ _ _ _ _ _ _____ - ______ _ _ _ -

2 TABLE 6F VikONI YANKEE JAN 93

• OEC 93 NEff 0ROLOGICAL DATA J0lkt itEQUEWCY DitttlBU110N 35.0 FT WIND OATA sfAalL11Y CLAtt F CLAtt it[QUENCY (PERCENT) = 13.52 WIND DitECTION FRCN

$ PEED (NTN) N NNE WE ENE E E$E SE SSE $ StW SV VSV W WWW NW NWW VtBL TOTAL CALM 0 0 0 0 1 0 0 0 3 0 1 2 1 0 1 0 0 9 (1) .00 .00 .00 .00 .09 .00 .00 .00 .28 .00 .09 .18 .09 .00 .09 .00 .00 .83 (2) .00 .00 .00 .00 .01 .00 .00 .00 .04 .00 .01 .02 .01 .00 .01 .00 .00 11 C3 30 14 12 14 11 22 17 41 51 107 174 143 88 68 75 45 0 912 (1) 2.76 1.29 1.11 1.29 1.01 2.03 1.57 3.78 4.70 9.86 16.04 13.18 8.11 6.27 6.91 4.15 .00 64.06 (2) .37 .17 .15 .17 .14 .27 .21 .51 .64 1.33 2.17 1.78 1.10 .85 .93 .56 .00 11.36 47 12 1 1 0 0 0 2 9 8 18 23 11 11 13 23 31 0 163 (1) 1.11 .09 .09 .00 .00 .00 .18 .83 74 1.66 2.12 1.01 1.01 1.20 2.12 2.86 .00 15.02 (2) .15 .01 .01 .00 .00 .00 .02 .11 .10 .22 .29 .14 .14 .16 .29 .39 .00 2.03 6 12 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 .09 .00 .09 (2) .00 .00 .00 .00 .00 .00 .00 .00 00 .00 .00 .00 .00 .00 .00 .01 .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 $PEEDS 42 15 13 14 12 22 19 50 62 125 198 156 100 81 99 77 0 1085 (1) 3.87 1.38 1.20 1,29 1.11 2.03 1.75 4.61 5.71 11.52 18.25 14.38 9.22 7.47 9.12 7.10 .00 100.00 (2) .52 .19 .16 .17 .15 .27 .24 62 .77 1.56 2.47 1.94 1.25 1.01 1.23 .96 .00 13.52 (1)ePERCINT OF ALL C03) OBSElvAfl0NS FOR THIS PAGE (2)* PERCENT of ALL GC00 06$ERVA110ks FOR THIS PERICD Ca CALM (WIND SPEED LEtt THAN OR EQUAL TO.95 MPM). _ _.

I I TABLE 60 VIRMONT YANKtt JAN 93 DEC 93 MCit0ROLOGICAL DATA J0lW1 Fit 0VENCf DilitlBUTION 35.0 FI WlWD DATA $1AllLi1Y CLA$$ G CLAll f tEQUtWCT (PERCtWT) = 4.06 WIND DItttil0N FROM $PitD(MPM) W Wkt WE ENE t ($1 St $$t $ $$W SV VSW W WW WW kWW YtBL TOTAL i CALM 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 2 i (1) .00 .00 00 .00 .31 .00 .00 .00 .00 .00 .00 .00 .00 .31 .00 .00 .00 .61 (2) .00 .00 00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .02 { C3 9 6 4 2 5 3 2 10 14 26 52 21 26 23 24 24 0 251 j (1) 2.76 1.84 1.23 .61 1.53 .92 .61 3.07 4.29 7.98 15.95 6.44 7.98 7.06 7.36 7.16 .00 76.99 i (2) .11 .07 .05 .02 .06 .04 .02 .12 .17 .32 .65 .26 .32 .29 .30 .30 .00 3.13 l e 47 4 0 0 0 0 0 0 1 2 2 14 6 5 2 8 29 0 73 I (1) 1.23 .00 00 .00 .00 .00 .00 .31 .61 .61 4.29 1.84 1,53 .61 2.45 8.90 .00 22.39 (2) .05 .00 00 .00 .00 .00 .00 .01 .02 .02 .17 .07 .06 .02 .10 .36 .00 .91 1 8 12 0 0 0 0 0 0 0 0 0 0 s 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 C1 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 SPitD$ 13 6 4 2 6 3 2 11 16 28 66 27 31 26 32 53 0 326 (i) 3.99 1.84 1.23 .61 1.84 .92 .61 3.37 4.91 8.59 20.25 8.28 9.51 7.98 9.82 16.26 .00 100.00 (2) .16 .07 .05 .02 .07 .04 .02 .14 .20 .35 .82 .34 .39 .32 40 .66 .00 4.06 (1)= PERCENT OF ALL COCD OssitVA110N$ FOR TMit PAGE (2)*PikCENT Of ALL COCD 08$ttvAfl0NS FOR TMis PitlCD Ce CALM (WIND Spit 0 List thAN OR touAL 10.95 MPM) 32-

{ ^ TABLE 611 YtRMCal TAWKit JAW 93

• DIC 03 Mtif 0t0LoctCAL DATA Jolut f atoutuCT Disf aisuflow 35.0 ft WluD DATA stAslLiff CLAll ALL CLAlt itIQutNCY (PitCtkT) = 100.00 WIND DittC110W team tPt[D(MPN)

N kNE ht ENE E t tt Et 8tt $ tsV SW WSV W WWV WW mWW vtBL TOTAL CAtu 3 1 2 1 3 0 0 1 6 4 5 6 10 3 4 4 0 $3 (1) 04 .01 .02 .01 .04 .00 .00 .01 .07 .05 .06 .07 .12 .04 .05 .05 .00 .66 (2) .04 .01 .02 .01 .04 .00 .00 .01 .07 .05 .06 .C7 .12 .04 .05 .05 .00 .66 C+3 210 123 103 94 108 96 116 189 205 290 415 310 271 254 305 296 0 3385 (1) 2.62 1.53 1.28 1.17 1.35 1.20 1.45 2.36 2.55 3.61 5.17 3.86 3.38 3.17 3.80 3.69 .00 42.18 i (2) 2.62 1.53 1.28 1.17 1.35 1.20 1.45 2.36 2.55 3.61 5.17 3.86 3.38 3.17 3.80 3.69 .00 42.18 47 305 93 33 37 91 115 161 286 275 102 74 64 130 135 255 593 0 2749 (1) 3.80 1.:A .41 46 1.13 1.43 2.01 3.56 3.43 1.27 .92 .80 1.62 1.68 3.18 7.39 .00 34.26 (2) 3.80 1.u 41 46 1.13 1,43 2.01 3.56 3.43 1.27 .92 .80 1.62 1.68 3.18 7.39 .00 34.26 6 12 268 84 15 3 9 11 13 64 222 39 29 25 90 189 143 257 0 1461 (1) 3.34 1.05 .19 .04 11 .14 .16 .80 2.77 49 .36 .31 1.12 2.36 1.78 3.20 .00 18.21 (2) 3.34 1.05 .19 .04 .11 .14 16 .80 2.77 .49 .36 .31 1.12 2.36 1.78 3.20 .00 18.21 13 18 42 10 0 1 2 0 0 1 56 7 4 3 15 100 64 41 0 346 (1) .52 .12 .00 .01 .02 .00 .00 .01 .70 .09 .05 .04 19 1.25 .80 .51 .00 4.31 (2) .52 .12 .00 .01 .02 .00 .00 .01 .70 .09 .05 .04 .19 1.25 .80 .51 .00 4.31 19 24 0 0 0 0 0 0 0 0 9 0 0 0 4 10 6 2 0 31 (1) .00 .00 .00 .00 .00 .00 .00 .00 .it .00 .00 .00 .05 .12 .07 .02 .00 .39 (2) .00 .00 .00 .00 .00 .00 .00 .00 .11 .00 .00 .00 .05 .12 .07 .02 .00 .39 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 4 ALL $P[tos 828 311 153 136 213 222 290 541 773 442 527 408 520 691 777 1193 0 8025 (1) 10.32 3.88 1,91 1.69 2.65 2.77 3.61 6.74 9.63 5.51 6.57 5.08 6.48 8.61 9.68 14.87 .00 100.00 (2) 10.32 3.88 1.91 1.69 2.65 2.77 3.61 6.74 9.63 5.51 6.57 5.08 6.48 8.61 9.68 14.87 .00 100.00 (1)sPERCENT OF ALL IXXD OB$tRVAfl0NS FOR 1 Nil PAGE (2)*PERCikT OF ALL GOCD OB$ttVAfl0NS FOR 1NIS PEtl00 Cs CALM (WIND $ Pit 0 Lt$$ ikAN on touAL TO.95 MPN). m._.-__

APPENDIX A EFFLUENT AND WASTE DISPOSAL SEM1 ANNUAL REPORT Supplemental Information Third and fourth Quarters. 1993 Facility: Vermont Yankee Nucleer power Station Licensee: Vermont Yankee Nuclear Power Corporation 1A. TECHNICAt SPFC1r1 CAT 10N LIMITS DOSE AND 00$f RATE j i Technical Specification and Cateoory limit a. Noble Gases 3.8.E.1 Total body dose rate 500 mrem /yr 3.8.E.1 Skin dose rate 3000 mrem /yr 3.8.F.1 Gamma air dose 5 mrad in a quarter 3.8.F.1 Gamma air dose 10 mrad in a year 3.8.f.1 Beta air dose 10 mrad in a quarter 3.8.f.1 Beta air dose 20 mrad in a year b. todine 131. todine-133. Tritium and Radionuclides in Particulate Form With Half-lives Greater Than 8 Days 3.8 E.1 Organ dose rate 1500 mrem /yr 3.8.G.1 Organ dose 7.5 mrem in a quarter 3.8.G.1 Organ dose 15 mrem in a year C. liquids 3.8.B.1 Total body dose 1.5 mrem in a quarter 3.8.B.1 Total body dose 3 mrem in a year 3.8.B.1 Organ dose 5 mrem in a quarter 3.8.B.1 Organ dose 10 mrem in a year A1 unso

4 APPEN0!X A l I (Continued) Ef f LUENT AND WASTE DISPOSAL SEMI ANNUAL REPORT 2A, TfCHNICAL SPECIFICATION LIMITS CONCENTRATION Technical SDecification and Category limit a. M ble Gases No MPC Limits (No ECL Limits) b. lodine 131, lodine-133. Tritium and Radionuclides in Particulate Form With Half lives Greater Than 8 Days No MPC Limits (No ECL Limits) c. Licuids i 3.8.A.1 Total fraction of MPC (ECL) excluding noble gases (10CFR20, Appendix B. Table 11. Column 2): 11.0 3.8.A.1 Total noble gas concentration: 12E 04 uCi/cc 3. AVfRAGE ENERGY Provided below are the average energy (T) of the radionuclide mixture in releases of fission and activation gases, if applicable, n. Average gamma energy: 3rd Quarter 8.10E 01 MeV/ dis 4th Quarter 8.30E-01 MeV/ dis b. Average beta energy: Not Applicable 4. ME ASUREMENTS AND APPROXIMATIONS OF TOTAL RADI0 ACTIVITY Provided below are the methods used to measure or approximate the total radioactivity in effluents and the methods used to determine radionuclide composition, A2 ainn

APPENDIX A (Continued) EFFLUENT AND WASTE DISPOSAL SEMI ANNUAL REPORT a. rission and Activation Geses Continuous stack monitors monitor gross Noble Gas radioactivity released from the plant stack. Total Noble Gas release rates are calculated using this monitor. To determine the isotopic breakdown of the release, samples are taken of the Steam Jet Air Ejector, which is the source gas for the releases. These samples are analyzed by gamma spectroscopy to determine the isotopic composition. The isotopic composition is then proportioned to the gross releases determined from the stack monitor to quantify the individual isotopic releases. These are indicated in Table IB and the totals of Table 1A. t Beginning in the fourth quarter of 1991, grab samples were obtained from the Turbine Building roof vents. Fission and activation gases, and their daughters, were not detected in grab samples during the reporting period. In July and August, the activity of Xe 138 released from the Turbine Building roof vents was assumed to be the same as the LLD value of Xe 138. The remainder of the gases indicated was calculated by ratioing the indicated Xe 138 to the other gases using the Steam Jet Air Ejector samples as mentioned above. In September and and October, the activity of Xe 133 released from the Turbine Building roof vents was assumed to be the same as the LLD value of Xe 133. The remainder of the gases indicated was calculated by ratioing the indicated Xe 133 to the other gases using the Steam Jet Air Ejector samples mentioned above. On October 20, 1993, the Turbine Building roof vents were permanently sealed. No further releases from this release path can be made. These results are indicated in Table IC and the totals of Table 1A. The error involved in these steps may be approximately 1100 percent. b. lodines Continuous isokinetic samples are drawn from the plant stack through a particulate filter and charcoal cartridge. Beginning in the fourth quarter of 1991, continuous particulate and charcoal samples were also taken at the Turbine Building roof vents. The filters and A3 utuo

APPENDIX A (Continued) EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT cartridges are normally removed weekly and are analyzed for lodine-131, 132, 133, 134, and 135. The error involved in these steps may be approximately 150 percent. c. Particulates The particulate filters described in b. above are also counted for l particulate radioactivity. The error involved in this sample is also approximately 150 percent. - = ' d. Licuid Effluents Radioactive liquid effluents released from the facility are continuously monitored. Measurements are also made 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 (uCi/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 effluent releases 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. 5. BATCH RELEASES a. Liauid There were no routine liquid batch releases during the reporting

period, A4 urue

_m_

APPENDlX A (Continued) EFFLUENT AND WASTE DISPOSAL SEM1 ANNUAL REPORT b. Gaseous There were no routine gaseous batch releases during the reporting period. 6. ABNORMAL RELEASES a. tiould There were no nonroutine.1guid releases during the reporting 1,

period, j

t b. Gaseous j i There were no nonroutine gaseous releases during the reporting (' period. 7. OTHER SUPPLEMENTAL INFORMATION a. On August 16, 1993, PRO (Potential Reportable Occurrence) No. 93 86 was written to evaluate a potential unmonitored release pathway through the Turbine Building wall, This potential pathway was created when wind blew the plastic coverings off of three holes that had been cut in the walls as part of the Turbine Building roof sent reroute. A subsequent evaluation determined that this did not constitute an unmonitored release pathway, since the release was accounted for through the Turbine Building roof vent monitoring

system, b.

On September 29, 1993, PRO No. 93-103 was written to evaluate the detection of Co 60 and Cs-137 in silt that had been removed from the west cooling tower deep basin during the refueling outage. The measured concentrations were: 9.1E-08 uti/cc Co 60, and 1.77E 07 uti/cc Cs-137. Although these samples were taken from on site, the Co-60 concentration was found to be well below the reporting level (Technical Specification Table 3.9.4) for environmental sediment s ampl es. Since there is no reporting level for Cs 137 in sediment, the concentration was compared to the vegetation reporting level, and was found to be well below it. (The Cs 137 is believed to be A-5 urue

n APPENDlX A (Continued) EFFLUENT AND WASTE DISPOSAL SEMI ANNUAL REPORT due to residual nuclear weapons testing f allout.) An evaluation concluded that there was no LER required for this event, and there were no other reporting requirements. 1 t 1 i l 1 A-6 airuo

APPENDIX B i L1001D HOLDUP TANKS Reauirement: 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 Semiannual Effluent Release Report per Technical Specification 6.7.C.1.

Response

The limits of Technical Specification 3.8.D.1 were not exceeded during this reporting period. i L B1 unu

APPENDIX C i RADI0 ACTIVE L10VID EFFLUENT MONITORING INSTRUMENTATION Requirement: Radioactive liquid effluent monitoring instrumentation channels are required to be operable in accordance with Technical Specification Table 3.9.1. If an inoperable radioactive liquid effluent monitoring instrument is not returned to operable status prior to a release pursuant to Note 4 of Table 3.9.1, an explanation in the next Semiannu. Effluent Release report of the reason (s) for delay in correctin the inoperability are required i per Technical Specification 6.7.t.1. l

Response

Since the requirements of Technical Specification Table 3.9.1 governing the operability of radioactive liquid effluent monitoring instrumentation were met for this reporting period, no response is required, C1 crue

i APPENDIX 0 RADI0 ACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION Recuirement: Radioactive gaseous effluent monitoring instrumentation channels are required to be operable in accordance with Technical Specification Table 3.9.2. If inoperable gaseous effluent monitoring instrumentation is not returned to operable status within 30 days pursuant to Note 5 of Table 3.9.2, an explanation in the next Semiannual Effluent Release Report of the reason (s) for the delay in correcting the inoperability is required per Technical Specification 6.7.C.1. ResDonse: Since *,he requirements of Technical Specification Table 3.9.2 governing the operability of radioactive gaseous effluent monitoring instrumentation were met for this reporting period, no response is required. } i 0-1 neue

l APPENDIX E RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 3gguirement: The radiological environmental monitoring program is conducted in accordance with Technical Specification 3.9,C. With milk samples no longer available from one or more of the sample locations required by Technical Specification Table 3.9,3, Technical Specification 6.7.C.1 f tquires the following to be included in the next Semiannual 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: No changes were needed in the milk sampling locations specified in Technical Specification Table 3.9.3 due to sample unavailability during the third and fourth quarters r.l 1993. E-1 uruo

is APPENDIX F LAND USE CENSUS Reautrement: A land use census is conducted in accordance with Technical I Specification 3.9 D. With a land use census identifying a location (s) which yields at least a 20 percent greater dose or dose commitment than the values currently being calculated in [ i Technical Specification 4.8.G.1, Technical Specification 6.7.C.1 requires the identification of the new location (s) in the next Semiannual Effluent Release Report.

Response

The Land Use Census was completed in the third quarter of 1993. No locations yielded a 20 percent greater dose or dose commitment ( 7 than the values currently being calculated in Technical Specification 4.8.G.I. h' i a 4 F-1 uruo

APPENDlX G PROCESS CONTROL PROGRAM Reautrement: Technical Specification 6.12. A.1 requires that licensee initiated changes to the Process Control Program (PCP) be submitted to the Commission in the Semiannual Radioactive Effluent Release Report for the period in which the change (s) was made. Resoonse: There were no licensee initiated changes to the Process Control Program during this reporting period. f f e G-1 unso

f. APPENDIX H OFF-SITE DOSE CALCULATION MANUAL Reovirement: Technical Specification 6.13.A.1 requires that licensee initiated changes to the Off-Site Dose Calculation Manual (0DCM) be submitted to the Commission in the Semiannual Radioactive Effluent Release Report for the period in which the change (s) was f made effective. I

Response

There were twu revisions to the Off-Site Dose Calculation Manual j during this reporting period. Amendment No. 15 updates the ODCM to reflect changes in the Effluent Controls Program to meet the revised 10CFR20. Standards for Protection Against Radiation, which was implemented at i Vermont Yankee in July 1993. The changes are primarily editorial in nature in that they change terminology used in the old Part 20 f to that in the new regulation. In addition, the original basis for limits on effluent releases to off-site areas.was on dose rates equal to 500 mrem /yr. This basis has not changed. The NRC is currently allowing plants to stay with the same basis for instantaneous release rate limits since it is not in direct conflict with the annual average requirements of the new 10CFR20 to limit doses to members of the public to 100 mrem in a year. The existing ALARA requirements of Appendix 1 to 10CFR Part 50 provide sufficient indication of potential off-site dose accumulation before the new dose limits of 10CFR Part 20 are reached. Since the methodology for determining off-site doses is not affected by the changes required for the new Part 20. this change does not reduce the accuracy or reliability of any of the dose calculations or setpoint determinations previously controlled by the ODCM. Amendment No. 16 addresses four areas of interest in the ODCM. First, the ODCM was modified to provide the dose methodology necessary to account for the burning on site of radioactively contaminated waste oil in the North Warehouse. This amendment designated the North Warehouse as a ground level radioactivity release point and developed the dose conversion factors applicable for use with the burning of waste oil at this location using the same exposure pathways, uptake assumptions, and model H-1 uno

t APPENDIX H l (Continued) 0FF SITE DOSE CALCULATION MANUAL approaches that have been previously applied to ODCM dose These dose f actors also reflect an assessment of calculations. the meteorological dispersion characteristics associated with the North Warehouse using the same model approaches that are applied to other ODCH meteorological evaluations. Appendix D to the ODCM has also been updated to reflect that the North Warehouse is now designated as the location of contaminated waste oil incineration All other in place of the Containment Access Building (CAB). criteria concerning sampling, analysis, and dose projections are the same as originally stated in Appendix D. Secondly, Amendment No.16 also removed reference to the Turbine Building roof ventilators as a designated effluent release point to the atmosphere. A recent design change to the plant has rerouted ventilation flow from the Turbine Hall to the plant stack and capped off the roof ventilators, thereby eliminating this ground level release point. Figure 6-2 has been updated to reflect this change. In addition, this amendment notes that due to differences in building cross sectional areas and resulting wake effects, the North Warehouse atmospheric dispersion factors are conservative in comparison to those previously associated with the main plant buildings (ground level dose f actors approximately 50% higher). As a consequence, any potential or unexpected ground level release from the Turbine Building or adjoining structures can utilize the new Method I ground level dose equations as a first step in impact arsessment. Since the methodology for determining off-site doses from oil burning is the same as that originally applied to ground level release points covered by the ODCM, this proposed change will not reduce the accuracy or reliability of any dose calculations or setpoint determinations presently controlled by the Off-Site Dose Calculation Manual. Third, Amendment No. 16 updated Figure 6-1, " Liquid Effluent Streams, Radiation Monitors, and Radwaste Treatment Systems." The flow diagram in this figure indicated that solid waste included spent resins dewatered by a centrifuge. Since the centrifuge has been taken out of service in favor of in-liner 4 H-2 uno

f APPENDIX H l (Continued) OFF-SITE DOSE CALCULATION MANUAL dewatering, the figure has been revised. This is considered an administrative change which does not effect the methods or parameters involved in performing dose calculations. l t I Lastly, an update to Table 4.1 and Figure 4 2 have been made to reflect changes in the Radiological Environmental Monitoring Program (REMP) resulting from the 1993 Land Use Census which noted changes in the location of land use receptors from that found in previous census. This is considered an administrative change which does not effect the methods or parameters involved in performing dose calculations. { i The revised ODCM pages for the above revisions were submitted f with the Semiannual Effluent and Waste Disposal Report which was filed with the NRC on February 28, 1994 for the reporting period t,; covering the third and fourth quarters of 1993. H-3 anuo

APPENDIX 1 RADIDACTIVE L10VID, GASEOUS, AND SOLID WASTE TREATMENT SYSTEMS Recuirement: Technical Specification 6,14. A requires that licensee initiated major changes to the radioactive waste systems (liauid, gaseous, and solid) be reported to the Commission in the Semiannual 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 theladioactive waste systems (liquid, gaseous, and solid) during this reporting

period, 1-1 nuuo

APPENDlX J ON-SITE DISPOSAL OF SEPTIC WASTE Reauirement: Of f-Site Dose Calculational Manual, Appendix B requires that the dose impact due to on-site disposal of septic waste during the reporting year and from previous years be reported to the Commission in the Semiannual Radioactive Ef fluent Report filed after January 1, if disposals occur during the reporting year.

Response

There was one on-site disposal of septic waste during the reporting year. The total volume of septage spread was approximately 12,000 gallons. The total activity spread on the 1.9 acres (southern) on-site disposal field during 1993 and from previous years was: Nuclide Activity (Ci) j Mn-54 2.11E-07 Co 60 1.32E-05 f Zn-65 7.77E-07 Cs-134 7.03E-08 Cs-137 2.16E-06 The projected hypothetical dose from on-site disposals of septic waste is 1.48E-02 mrem / year. This dose was calculated according to the model and the assumptions of Off-Site Dose Calculational Manual, Appendix B. J-1 uruo ..}}