ML061780101

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State of Vermont, Environmental Radiation Surveillance Report, 2000 Summary
ML061780101
Person / Time
Site: Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date: 12/31/2000
From:
State of VT, Dept of Health
To:
Office of Nuclear Reactor Regulation
References
%dam200611
Download: ML061780101 (54)
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I-- --1 State of Vermont EnvironmentalRadiationSurveillance j Report 2000 Summary, Vermont Department of Health Office of Occupational & Radiological Health

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2000 AIR SAMPLES Air samples are taken at various fixed locations using a line powered piston type compressor Operating at a rate of I cubic foot per ,hiniite nominal. The sample is collected on a fiberglass 2" diameter filter. Collection time is continuous with a nominal sampling period of four: Weeks.

The samples aire sent to the Vermont State Department of Health Laboratory for gross Alpha and Beta analyses. Results are repotted in picoCuries per cubic meter of air with 2 sigma (standard deviation) value. In June, Guilford Town Clerk Station was relocated to Guilford Town Highway Garage, a nominal onequarter mile distance north westerly from the Town Clerk's Office, at the request of the Town of Guilford.

lih WI, ___________M___1 1/06 - 2/11/00 0.0033 + 0.0009 0.0232 + 0.0018 0.0026 + 0.0007 0.0168 + 0.0013 2/11 - 3/09/00 0.0029 + .0010 0.0201 +/- 0.0019 0.0028 + 0.0008 0.0161 + 0.0015 3/09 - 4/03/00 < 0.0079 .< 0.0014 0.0027 + 0.0009 0.0118 +/- 0.0014 4/03 - 5/02/00 0.0030 + 0.0010 0.0110 + 0.0014 0.0017 + 0.0007 0.0105 + 0.0012 5/02 - 6/1/00. .0.0017 + 0.0009 0.0108 + 0.0015 0.0014.+ 0.0007 0.0103 + 0.0013 6/01 - 7/05/00 0.0021 + 0.0008 0.0105 + 0.0013 0.0017 + 0.0007 0.0124 + 0.0012 7/05 - 8/02/00 0.0018 + 0.0009 0.0087 +/- 0.0014 0.0013 + 0.0007 0.0073 + 0.0011 8/02 - 9/06/00 0.0012 + 0.0006 0.0134 + 0.0014 0.0015 + 0.0006 0.0110 + 0.0012 9/06 - 10/04/00 0.0023 + 0.0009 0.0158 + 0.0017 0.0027 + 0.0008 0.0155 + 0.0015 10/04 - 11/02/00 0.0041 + 0.0011 0.0199 + 0.0018 0.0034 + 0.0009 0.0171+ 0.0015 .

11/02 - 12/06/00 0.0025 + 0.0008 0.0134 + 0.0014 0.0022 + 0.0006 0.0095 + 0.0011 12/06 - 1/3/01 0.0040 + 0.0012 0.0198 + 0.0021 . 0.0020 + 0.0008 0.0111 + 0.0013

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.2000 AIR SAMPLES (picoCuries/Cubic Meter) 1/06 - 02/1.1/00 0.0048 +/- 0.0010 0.0241 +/- 0.0018 . 0.0042 m 0.0011 0.0256 +/- 0.0020 2/11 - 3/09/00 0.0038 +/- 0.0011 0.0194 +/- 0.0018 0.0026 4- 0.0010 0.0218 +/- 0.0020 3/09 - 4/03/00 0.0022 +/- 0.0009 0.0142 b 0.0017 0.0031 +/-0.00 11 0.0170 +/- 0.0019 4/03 - 5/02/00 0.0018 +/- 0.0008 0.0107 +/- 0.0014 0.0032 -0.001Q 0.0118 +/- 0.0015' 5/02 - 6/01/00 Meter Not Operating . Meter Not Operating Meter Not Operating Meter Not Operating 6/01 - 7/05/00 0.0015 -0.0007 0.0133 1 0.0014. 0.0019 +/- 0.00.12 0.0166 +/- 0.0022 7/05 - 8/02/00 * " < 0.0009 0.0078+. 0.0013 0.0025 +/- 0.0010 0.0079 +/- 0.0013.

8/02 - 9/06/00 0.0020 + 0.0007 0.0114 + 0.0013 0.0023 + 0.0008 0.0117 + 0.0014 9/06 - 10/04/00 0.0027 + 0.0009 0.0178 + 0.0017 0.0029 + 0.0010 0.0213 + 0.0020 10/04 - 11/02/00 0.0044 + 0.0011. 0.0189 + 0.0018 0.0044 + 0.0011 0.0190 + 0.0017 11/02 - 12/06/00 0.0029 + 0.0008. 0.0115 + 0.0013 0.0021 + 0.0006 0.0108 + 0.0011 12/06 - 1/3/01 0.0030 + 0.0009 0.0138 + 0.0016 0.0028 + 0.0008 0.0131 + 0.0014

C C C 2000 AIR SAMPLES (picoCuries/Cubic Meter) 1/06 - 02/11/00 0.0050 - 0.0010 ."0.0184 +/- 0.0014 0.0042 + 0.0009 0.0199 + 0.0015 2/11 - 3/09/00 0.0033 - 0.0010 0.0173 +/- 0.0015 0.0031 + 0.0009 0.0169 +/- 0.0015 3/09 -4/03/00 0.0021 4-0.0008 0.0125 +/- 0.0015 0.0022 E0.0009 0.0107 + 0.0014 4/03 - 5/02/00 0.0019.+ 0.0008 0.0093 + 0.0012 0.0028 + 0.0008 0.0104 + 0.0013 5/02 - 6/01/00 0.0027 +/- 0.0009 0.0102+/- 0.0013 0.0019 + 0.0008 0.0098 + 0.0013 6/01 - 7/05/00 0.0022 +/- 0.0008 0.0124 +/- 0.0013 0.0017 + 0.0007 0.0079 + 0.0010 7/05 - 8/02/00 0.0011 + 0.0007 0.0069 h0.0012 . <.0.0008 0.0062 k 0.0011 8/02 - 9/06/00 0.0018 + 0.0007 0.0108 + 0.0012 0.0016 + 0.0006 0.0099 + 0.0012 9/06 - 10/04/00 0.0029 + 0.0009 0.0147+ 0.0015 0.0023 + 0.0008 0.0163 + 0.0016 10/04 - 11/02/00. 0.0037 + 0.0010 0.0181 + 0.0016 0.0038 + 0.0010 0.0158 + 0.0015 11/02 - 12/06/00 0.0022 + 0.0007 0.0114 + 0.0012 0.0015 + 0.0006 0.0090 + 0.0010 12/06 - 1/3/01 0.0029 + 0.0009 0.0142 +0.0015 -0.0025 + 0.0008 0.0114 + 0.0013 12/06 1/3/01

- 0.0029 + 0.0009 0.0142 +0.0015 0.0025 + 0.0008 0.0114 + 0.0013

C C C 2000 AIR SAMPLES (picoCuries/Cubic Meter) 1/06 -02/11/00 0.0025 +/- 0.0007 0.0175.4 0.0013 2/11- 3/09/00 0.0026 +/- 0.0008 0.0140 :1 0.0014 3/09 -4/03/00 < 0.0006 < 0.0011 4/03 - 5/02/00 0.0024 . 0.0008 0.0083 +/- 0.0011

  • 5/02 - 6/01/00 0.0011 . 0.0007 0.0088 +/- 0.0012 6/01 - 7/05/00 0.0016 + 0.0006 0.0110 + 0.0011 7/05 - 8/02/00 0.0012 + 0.0007 0.0062 +/- 0.0011 8/02 - 9/06/00 0.0019 + 0.0006 0.0106 + 0.0011 9/06 - 10/04/00 0.0020 + 0.0007 0.0154+ 0.0015.

10/04 - 11/02/00 0.0037 + 0.0009 .0.0148 + 0.0014 11/02 - 12/06/00 0.0013 + 0.0005 0.0090 + 0.001.0 12/06 - 1/3/01 0.0018 + 0.0007 0.0104 + 0.0012

C C C 2000 AIR SAMPLES (picoCuries/Cubic Meter) 1/06 - 2/11/00 0.0036 :4 0.0009 0.0193 +/- 0.0015 0.0030 + 0.0008 0.0198 + 0.0015 2/11 - 3/09/00. .0.0030 - 0.0009 0.0175 +/- 0.0016 0.0035 + 0.0011 0.0179 + 0.0019 3/09 - 4/03/00 0.0023 +/- 0.0009 0.0120 +/- 0.0015 < 0.0007 < 0.0012 4/03 - 5/02/00 0.0016 4-0.0007 0.0098 +/- 0.0013 0.0019 + 0.0007 0.0110 + 0.0013 5/02- 6/01/00 0.0015 - 0.0008 0.0108 +/- 0.0014 0.0010 + 0.0007 0.0057 + 0.0010 6/01 - 7/05/00 0.0012 - 0.0007 0.0089 +/- 0.0011 0.0017 + 0.0007 0.0117 + 0.0012 7/05 - 8/02/00 0.0015 - 0.0008 0.0087 h 0.0013 0.0009 + 0.0007 0.0071 +/- 0.0011 8/02 - 9/06/00 0.0018 + 0.0007 0.0115 + 0.0013 0.0018 + 0.0006 0.0118 + 0.0012 9/06 - 10/04/00 0.0017 + 0.0008 0.0163 + 0.0016 < 0.0006 0.0037 + 0.0009 10/04 - 11/02/00 0.0038 + 0.0010 0.0155 + 0.0015 0.0043 + 0.0010 0.0184+ 0.0016 11/02 - 12/06/00 0.0023 + 0.0007 0.0108 +.0.0012 < 0.0004 0.0172 + 0.0006 12/06 - 1/3/01 0.0032 + 0.0009 0.0140 + 0.0015 0.0028 + 0.0008 0.0134 + 0.0014

C C C 2000 AIR SAMPLES (picoCuries/Cubic Meter)

. 1/06 - 2/11/00 0.0038 + 0.0008 0.0197 + 0.0015 2/11 -- 3/09/00 00.0029 + 0.0009 0.0159 + 0.0015 3/09.-4/03/00 0.0020 + 0.0008 0.0119 + 0.0015 4/03 - 5/02/00 0.0021 + 0.0008 0.0101 + 0.0012 5/02 - 6/01/00,, 0.0013 + 0.0008. 0.0089 + 0.0013 6/01 - 7/05/00 0.0014 + 0.0007 0.0117 + 0.0013 7/05 - 8/02/00 0.0016 +/- 0.0008 0.0086 +/- 0.0013 8/02 - 9/06/00. 0.0020 + 0.0007 0.0121 + 0.0013 9/06 - 10/04/00 0.0028 + 0.0009 0.0169 + 0.0016 10/04 - 11/02/00 0.0037 + 0.0010 . 0.0170 + 0.0016 11/02 -12/06/00 0.0026.+ 0.0007 0.0116 + 0.0012 12/06 - 1/3/01 0.0026 + 0.0008 0.0143 + 0.0015

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BIOTA 2000 Occasional sampling, most often once a year, is done on other biologicals and wild foods as available or needed. Samples are collected (usually in the Northwest quadrant) within a mile or two from the facility. These normally consist of ferns (fiddleheads), edible fungi (Clavaria sp., Boleti sp., Russlae sp., grapes, etc.) and grass. Sample sizes range from 250 to 1,000 grams. The samples are weighed, placed wet in reentrant beakers and analyzed in the laboratory gamma spectrometer. Usual spectra include primordial radionuclides, archival Cesuim-137 and occasional cosmogenic Beryllium-7. Reporting units are picoCuries per Kilogram.

  • Vernon Rte 142 Indian Point 32,zn jýBot- 941%,F1134~ '-'-Potassuxn-40,: ]3'eryllium-7
  • Summer 7/5/00 Russlae Fungi 1430 + 110 4640 + 500 ND
  • Vernon -Stebbins Rd., Fire Pond Spring5/9/00 Plant ".ND 3850+390 J ND

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Spring 5/9/00 Plant

. N.. . j 36000+310 ND Vernon - Broad Brook Rd.

Spring 5/9/00 Plant ND 4810+390 153+62 Vernon -Northwest Fence of Vt.Yankee

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Samples were also evaluated for the radionuclides listed below. None were present in excess of the lower limits of detectability Cr-51 69 Sb-126 18 Mn-54 15 1-131 27 Co-56 .15. Cs-134 58 CO-60 . 21 Cs-136 18 Zn-65 18 Cs-137 5 Sr-85 86 Ce-139 93 RufRh-103 32 Ce-141 98 Sb-124 .18 Ce-144 98

  • - Chernobyl event and archival atmospheric testing
    • = Cosmogenic

+ = No Samples This Period

++ = Comparison Sample ND = Below Detection Limits

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FISH 2000 Two locations (3-4 Vernon Pond and 3-8 Route 9 Highway bridge) provide fish samples in Spring and Fall of about one kilogram each sample lot for a total of two sample lots each year. Fish are captured via an electroshock method with those having game or commercial value chosen for a total of four sample lots each year. Fish are captured via an electroshock method with those having garhe or commercial value chosen for samples. The fish are frozen' whole, weighed, and chopped (entire) for loading into a reentrant beaker and subsequent analysis in a ReGe detector equipped Gamma Spectrometer System. Radionuclides detected usually include naturally occurring Potassium 40, Thorium and Uranium with daughters, archival 137 due to former open atmospheric nuclear testing, and occasional traces of cosmogenic Beryllium-7.

Reporting units are picoCuries per Kilogram.

Spring Fall (14.)

Samples were also evaluated for the radionuclides listed below. None were present in excess of the lower limits of detectability(L.L.D.) which are shown in pCi/kg.

Cr-51 69 Sb-126 18 Mn-54 15 1-131 27 Co-56 15 Cs-134 58 CO-60 21 Cs-136 18 Zn-65 18 Cs-137 5 Sr-85 86 .- Ce-139 93 Ru/Rh-103 32 Ce-141 98 Sb-124 18 Ce-144 98 Chernobyl event and archival atmospheric testing ND = Below Detection Limit

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2000 IODINE CARTRIDGES Charcoal cartridges loaded with TEDA for facilitative iodine collection are part of the air sampling train at selected air. filter sampling stations. The sample rate and sampling times c6incide with. those used for air filters. Response to Ch6nobyl iodine release was marked, proving the sensitivity to environmental trace levels of iodine of this system.IThe Health Department Radiation Laboratory analyzes the cartridges for iodine by gamma spectroscopy. Nominal Minimum Detectable Activity is 2 x IO's pCi/l of air.

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Vernon:.ý High School X = No Evidence of Iodine 131

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January . X X February -X X March X X.

April X X May X X June. .X X July X X August X __X_

September . X X October X X November X X December X X

SamplePeriod,.iA.-.- Powerline.:i-` ::.-Guilford: Wilmington D&E

. -Rer.:. Highway-.. State. Henry's A4. .Garage Highway.:

January X X X X February X X X X March X- X X X April X X X X May X X X X June X X X X July X X X X August X X X X September X X X X October X X X X November X X X X December X X X X i

X = No Evidence of Iodine 131

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MILK 2000 All samples were analyzed for Iodine-131. No results, except as noted, were found above or at the detection limit of 10 picoCuries/liter. Significant indications of the presence of any other radionuclides were also investigated in all cases.

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SEDIMENT - 2000 A sediment sample is taken ranging from 0.75 to 1.25 kilograms, approximate, from the Connecticut River at three separate locations in the'spring and fall of each year. The sample is dried and sieved with 1/8" mesh hardware cloth, then weighed and top loaded in a one liter Marinelli Beaker and counted. A normal spectrum will include primordial radionuclides with daughters, and archival Cesium-137 dissipating from former open atmospheric nuclear testing. On occasion short-lived cosmogenic Beryllium-7 can be discerned at levels comparable with natural Potassium-40.

SPRING pCi/kilogram 3-3 ND 8850 +700 ND 3-4 47+25 10400+800 ND 3-8 59+23 13200+ 1000 ND FALL

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3-3 22+22 12200+ 900 ND 3-4 78+24 12900+ 1000 ND 3-8 107+23 12500 +1000 ND -

Samples were also evaluated for the radionuclides listed below. None were present in excess of the lower limits of detectability (L.L.D.) which are shown in pCi/kg.

Cr-51 69 Sb-126 18 Mn-54 15 1-131 27 Co-56 15 Cs-134 58 CO-60 21 Cs-136 18 Zn-65 18 Cs-137 5 Sr-85 86 Ce-139 93 Ru/Rh-103 32' Ce-141 98 Sb-124 . 18 Ce-144 98

  • = Ch6nobyl event and archival atmospheric testing
    • = Cosmogenic ND = None Detected

SOIL"2000'--.

Occasional sampling, most often once a year, is done on other soils as available or needed. Samples are collected (usually in the Northwest quadrant) within a mile or two from the facility. Sample sizes range from 250 to 1,000 grams. The samples are weighed," dried and placed in 500 ml wide mouth HDPE bottles and analyzed in the laboratory gamma spectrometer. Usual

  • spectra include primordial radionuclides, archival Cesuim-137 and occasional cosmogenic Beryllium-7. Reporting units are picoCuries per Kilogram.

Northwest Corner Vermont Yankee Fence Spring 5/9/00 ND 12100+ 2790 ND

  • = Chemobyl event and archival atmospheric testing
    • = Cosmogenic.

+ = No Samples This Period

++ = Comparison Sample ND = Below Detection Limits

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SPECIAL STUDY - SEDIMENT

-VERMONT YANKEE - NORTH STORM DRAIN OUTFALL Results in pCi/kilogram SPRING 2000 A?

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S-1 ND ND 19400-+/-1500 154-40 S-2 ND ND 19400. 1400 183+/-43 S-3 ND ND 18000L-1400 173:4- 46 S-4 ND ND 16800:+/-L1200 154+ 32 S-5

  • T-1 ND ND .18300 +/-1400 114+/-31 T-2 ND ND 20100.h 1400 16.1+/-39 T-3 ND ND 16600+/- 1300 149b-33 T4 ND ND 15000++/-1100 141+/-36 T-5
  • U-1 ND ND 16200E-1200 264+-42 U-2 ND ND 16600 +/-L 1200 176h-41.

U-3 ND ND 15500+/-1200 105 +/-35 U-4 ND. ND 14300+/-k 1100 151 :-42 U-5 * * *

  • V-1 ND ND 18300+/- 1400 159+/-39 V-2 .ND ND 18000+/- 1300 148+/--36 V-3 ND ND 16500+/--1300 151+/-35.

V4 ND ND 15800+/- 1100 134+/- 28 V-5. * * *

  • W-1 * *
  • W-2 ND ND 21000+/- 1600 232+/--40 W-3 ND ND 18400+/- 1300 194+/--46 W4 ND ND 16200L-1200 169+/- 40 W-5 "* * *
  • X-1 * * *
  • X-2 ND ND 14400+/- 1000 138+/-38 X-3 ND ND 16600+/-h 1300 131 +/- 41 X4 ND ND .17300:f- 1300 143+/-+43 X-5 * * *
  • Y-1 * * *
  • Y-2 ND ND 16800+/--1300 .219+/-h48 Y-3 ND ND. 14900+/- 1100 144+/- 40 Y4 * * *
  • Y-5 * * "*
  • Z-1 * * *
  • Z-2 * * *
  • Z-3 ND ND 17700 +1300 142 +37 Z-4 ND ND 16400 +1300 178 +46 Z-5 * * * *
  • Location not included for sampling

= None Detected

SPECIAL STUDY - SEDIMENT

.VERMQNT.YANKEE - NORTH STO'M DRAIN OUTFALL Results in pCi/kilogram FALL 2000

_ _ _ _ _ _ _ _ _ _ _ _.__ _.- _.,,__;_,._,._,_--.Cesium -. :.

S-l" ND ND 16500 +1300 147+36 S-2 ND ND 20300+ 1500 206 +45 S-3 ND ND 18200+ 1300 185+43 S-4 ND ND 18200+ 1400 164 +39 S5.* *

  • T-1 ND ND .20900+ 1500. 227 +43 T-2 ND ND 19100+ 1400 196 +35 T-3 ND ND 18900+ 1400 137+31 T-4 ND ND 14400+1100 . 105+26 1T-5 U-1 ND ND 14200 +1100 103+27 U-2 ND ND 17200+ 1200 200+ 41 U-3 ND ND 18300 +1300 192 +33 U-4 ND ND 16200+ 1200 137 +29 U-5 * * " *
  • V-1 .499+214 ND 14900+1100 *112+22 V-2 957 +342 ND 13600+ 1000 140 +26 V-3 ND ND 16300+ 1200 160 +34 V.4 ND ND 18200+ 1300 190+52 V-5 * * *
  • W-1 * * *
  • W ND ND 17500+ 1300 152+45 W-3 ND ND 17600+ 1300 144 +33 W-4 ND ND 15700+ 1200 138 +32 W-5 ***-

X-1 * * *

  • X-2 ND ND 16300 + 1200 146 +32 X-3 ND ND 14900+ 1100 118+30 X-4 ND
  • ND 12500+ 900 99+22 X-5 * * *
  • Y-1 * * *
  • Y-2 ND ND - 182r0 +4oo' . .184+33 Y-3 ND ND 16100+1200 142+30 Y-4 * * * *

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  • Y-5 Z-1 * *
  • Z-2 * *
  • Z-3 ND' ND 17600+ 1200 148 +37 Z-4 ND ND .12600+ 960 92 +24

-5 * * *

  • Location not included for sampling

= None Detected

APPENDIX A RADIOLOGICAL SAMPLING PROGRAM OF BOTTOM SEDIMENT NORTH STORM DRAIN S T U V w X y

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2000 THERMOLUMINESCENT DOSIMETRY (TLD) DATA (milliRoentgens 1 2 Sigma)

This method samples direct gamma radiation in the environment. Detectors utilize crystals which store eneigy from gamma and x-rays until analyzed for their cumulative energy exposure experience. Vermont has over twenty selected locations where direct radiation levels have been measure for over ten years.

Some of these sites are located where other types of samples'- air, milk, water are collected. Detectors were provided to the State of Vermont by Teledyne Inc. for the first, second and third quarters of this year.

The fourth quarter laboratory service was provided by Proxtronics, Inc. as Teledyne decided to discontinue this type of service. The fourth quarter dosimeters contained two detection cells for each dosimeter.

Levels of direct radiation from the natural environment are routinely detected at each site.

-;1;Qtr.5y7V . >"PIi2d-Qtr.:,7 Miller Farm, Vernon 18.6 + 0.6 17.1 + 1.8 Elementary School Exterior, Vernon

  • 19.6 + 0.6 18.7 + 1.2 Elementary School Interior, Vernon 23.8 + 2.0 21.1 + 0.6 VY North Fence, Vernon 18.9+1.6 19.8+ 1.0 VY'Parking Lot Fence, Vernon 22.7 + 2.2 22.8 + 3.0 Dummerston State Highway Garage (FO) 19.6+1.6 18.1 +1.0 VY Southwest Fence, Vernon 18.3 + 1.4 18.4 + 0.6 Renaud Bros. (Puffers), Vernon* 18.7+1.0 18.8 + 1.2 Tyler Hill & Franklin Road, Vernon 19.2+1.8 18.4+1.0 Power Line River Crossing, Vernon
  • 19.3 + 0.6 17.8 +1.8 Blodgett Farm, Vernon 20.5 + 1.2 18.5 + 0.8 Brattleboro U.H.S., Brattleboro 20.2 +1.6 18.7.+ 0.4 Henry Transportation, Guilford * , 18.3 + 1.4 19.1 + 0.8 Guilford Town Highway Garage, Guilford
  • 19.3 + 2.0 18.6 + 1.0 Evans Farm, Guilford 18.0 + 1.4 17.3 + 0.8 Putney Town Clerk, Putney 17.8 +1.2 17.0 + 2.0 State Highway Garage, Wilmhington
  • 20.9 + 1.4 20.9 + 1.2 State Police, West Brattleboro
  • 17.5+1 .4 17.3 + 1.2 Windham County Courthouse, Brattleboro 18.7 + 0.8 16.9 + 0.8 VDORH-A 19.5+3.4 18.4+0.8 Smead Lumber, Vernon 18.3+1.0 17.6+1.4 Pond Rd. & Rte. 142 N, Vernon 19.1 +1.4 18.1 + 0.8 Engle Dr., West Rd., Vernon 18.6 + 0.8 17.9 + 1.0 Fairman Rd., Vernon 18.9+1.6 19.5+1.2 Pond Rd. & Houghton Hill Rd., Vernon 18.0 + 1.6 17.5 + 0.4 Rte. 5, Transmission Line, Guilford (10) - 20.7 + 1.4 19.8 + 2.0 Rte. 5, Andrews Cemetery, Guilford (40) 18.9 + 1.2 19.4 + 1.4 Rte. 5 & Tkaczyk Farm Rd., Guilford (11) 18.6 + 1.4 18.9 + 1.4 Tyler Hill Rd., Vernon 19.3+1.6 19.7+1.4 Rte. 142 N of Transmission Line, Vernon 18.3+ 0.8 18.4 + 1.8 Rte. 5 to Guilford Ctr. Rd., Guilford (14). 18.2 +1.0 17.3 + 0.2 Guilford Ctr Rd. & Tater Rd., Guilford (15) 18.6 + 1.8 17.9 + 0.8 Weatherhead Hollow & Stony Hill Rds, Gfd 17.4 + 1.4 17.5+1.8

k.) Huckle Hill Rd. N of VT/MA Border, .18.6 + 1.8 20.9 + 1.4 Vernon Rte. 5, Dummerston School, Dummerston 18.5 + 1.8 18.9 + 0.8 Pond Rd., Vernon Rec. Area, Vernon 18.4 + 1.4 17.0 + 1.2, Rte. 142, Vernon Fire Dept., Vernon .17.8+1.8 18.4+1.4 Rte. 142 S & Pond Rd., Vernon 18.9 + 2.0 18.1 + 0.8 Rte. 142 & Newton Rd., Vernon 17.3 + 0.8 16.6 + 1.0 Rte. 142 & Depot St., VT/MA Line, Vernon 19.2+1.6 17.7+1.0 Gov. Hunt Rd. at Vernon Elem. School 19.8 + 1.8 19.6+ 1.2

  • Collocated with Air Sampling Station

2000 THERMOLUMINESCENT DOSIMETRY (TLD) DATA (milliRoentgens +/- 2 Sigma)

Miller Farm, Vernon 19.4 + 1.0 19.8 + 2.8 Elementary School Exterior, Vernon* 20.2 + 2.0 20.6 + 0.8 Elementary School Interior, Vernon 25.0+ 1.8 23.3 + 1.8 VY North Fence, Vernon 21.6+1.4 21.8 #

VY Parking Lot Fence, Vernon 24.8 + 5.0 26.7 + 7.1.

Dummerston State Highway Garage (IFO) 20.8 + 2.4 20.2 + 2.1 VY Southwest Fence, Vernon, 20.1 + 2.0 23.1 + 5.0 Renaud Bros. (Puffers), Vernon*. 20.8 + 1.0 20.3 + 0.9 Tyler Hill & Franklin Road, Vernon 20.0 + 0.8 22.3 + 0.7 Power Line River Crossing, Vernon

  • 19.5 + 1.0 *19.7 + 2.7 Blodgett Farm, Vernon . 20.8 + 1.8 20.8 + 3.0 Brattleboro U.H.S., Brattleboro* 19.2 + 1.2 19.6 + 1.6 Henry Transportation, Guilford
  • 19.6 + 0.8 19.6+ 1.6 Guilford Town Highway Garage, Guilford
  • 18.6 + 3.2 20.2 + 3.0 Evans Farm, Guilford " 18.6 + 1.0 18.8 + 0.5 Putney Town Clerk, Putney 18.1 + 2.0 19.1 + 3.8 State Highway Garage, Wilmington
  • 10.1 + 1.0 22.6 + 1.6 State Police, West Brattleboro .* 18.5 + 1.2 18.6 + 2.4 Windham County Courthouse,-Brattleboro 19.0 + 1.6 19.2.+ 1.7 VDORH A 18.6+2.8 18.7+1.7 Smead Lumber, Vernon 20.7 + 2.6 20.1.+ 2.6 Pond Rd. & Rte. 142 N, Vernon 19.0 + 1.4 20.1 + 2.4 Engle 'Dr., West Rd., Vernon .19.2 + 1.0 19.8 + 3.3 Fairman Rd., Vernon 19.5+1.6 20.2+ 2.9 Pond Rd. & Houghton Hill Rd., Vernon 19.6.+ 0.8 19.8 + 2.0 Rte. 5, Wolosko,(10) 21.8+3.4 21.7+5.1 Rte. 5, Andrews Cemetery, Guilford (40) 19.7+ 1.4 20.8 + 3.4 Rte. 5 & Tkaczyk Farm Rd., Guilford 21.3 + 2.4 21.2 + 2.6 Tyler Hill Rd., Vernon .20.5 + 1.8 21.0+4.5 Rte. 142.N of Transmission Line, Vernon 19.2 + 3.0 20.4 + 1.7 Rte. 5 to Guilford Ctr. Rd., Guilford (14) 18.4 + 1.8 20.5 + 1.6 Guilford Ctr Rd. & Tater Rd., Guilford (15) 20.6 + 2.0 20.1 + 3.1 Weatherhead Hollow & Stony Hill Rds, Gfd 19.6 + 2.6 17.3 + 1.7

__! caio** ~~Nc~4 * *-.3rd OtrL..* ,,-. i,.4thh4 Q..Qtr.'*.:

Huckle Hill Rd. N of VT/MABorder, 23.3 + 2.0 25.4 + 4.0 Vernon Rte. 5, Dummerston School, Dummerston 19.8 + 2.0 21.7 + 3.4 Pond Rd., Vernon Rec. Area, Vernon 19.6 + 2.0 17.8 + 2.1 Rte. 142, Vernon FireDept., Vernon 19.1 + 2.6 19.7 + 2.1 Rte. 142 S & Pond Rd., Vernon 19.1 + 1.2 19.8.+ 3.6 Rte. 142 & Newton Rd., Vernon 17.7 + 1.2 17.9.+ 1.9 Rte. 142 & Depot St., VT/MA Line, Vernon 18.4 + 2.6 19.9 + 3.4 Gov. Hunt Rd. at Vernon Elem. School 20.9 + 1.6 22.1+6.0

  • Collocated with Air Sampling Station
  1. Data from single element. Vendor indicates probable water.interference with second element data.

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2000 TRITIUM IN WATER VERMONT YANKEE (CONNECTICUT RIVER)

Results (nCilliter +.2Sigma)

As part of the water sampling effort, an aliquot of the monthly grab samples is analyzed for Hydrogen -3.

Two locations are reported monthly for Hydrogen-3 content from the Connecticut River (upstream and downstream of the power station).

Januay .5 5Upstream January < 0.5 <0.5 February < 0.5 < 0.5 March < 0.5 < 0.5 April < 0.5 < 0.5 May < 0.5 < 0.5.

June "<0.5 < 0.5 July < 0.5. < 0.5 August < 0.5 < 0.5 September < 0.5 < 0.5 October. < 0.5 < 0.5 November < 0.5 <0.5 December < 0.5 < 05

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. 05 SOUTH VERNON

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2000 WATER SAMPLES (picoCuries/Liter) 01 M~pn t'Npowertpam _ Brattleboro

_______ ppLe1~ hrge Town-January Alpha 7.0+1.3 <1.4 < 1.4 < 1.4 Beta 4.5+1.8 < 2.3 < 2.3 < 2.7 Gamma ND

  • ND February Alpha 6.0+1.1 *4.6+1.8 1.9+1.1 < 1.5 Beta 3.3+1.6 2.3+1.5 <2.3 < 2.3 Gamma T ND.
  • March Alpha 9.7+ 1.3 < 2.5 < 2.3 < 2.3 Beta 4.8+1.6 < 2.3. < 2.3 < 2.3 Gamma *ND ND ND April Alpha .8.0+ 1.2 2.6+ 1.6 2.3+ 1.3 < 1.6 Beta 4.2+ 1.8 2.5+ 1.5 <2.3 3.9+1.6.

Gamma " ID ND ND May Alpha 7.1+1.2 4.5+1.6 2.6+1.3 3.6+1.4 Beta 3.3+1.6 2.6+1.4 <2.1 <2.1 Gamma

  • ND ND ND June Alpha 6.0+1.1 < 1.7 2.9+1.2 < 0.9 Beta 13.7J +1.7 < 2.2 <2.2 < 1.1

'Gamma

  • ND' ND ND July Alpha 5.1+1.0 < 1.4 < 14 < 1.4 Beta 6.1+ 1.8 < 2.7 < 2.7 < 2.4 Gamma ND ND ND ND August Alpha 4.9+1.2 4.0+1.2 < 1.4 < 1.4 Beta 5.6+1.8 <2.8 < 2.8 < 2.8 Gamina ND ND ND . ND September Alpha 4.9+.1.0 <1.6 < 2.7 < 1.6 Beta 5.0+ 1.8 < 2.3 < 2.7 < 2.3 Gamma
  • ND ND ND October Alpha 6.2+1.1 < 2.3 < 2.3 <2.2 Beta 3.9 + 1.6 < 2.4 < 2.4 < 2.4 Gamma
  • ND ND ND November Alpha 5.2+ 1.0 < 2.8 < 2.6 < 2.5 Beta .3.8+1.5 3.0+1.4 < 2.2 < 2.2 Gamma
  • ND ND ND December Alpha .5.5+1.1 <2.8 < 2.7 < 2.7 Beta 5.0 1+6 < 2.4 < 2.4 <2.4 Gamma
  • ND ND ND
  • = Naturally Occurring Radionuclides ND = None Detected

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2000 WATER SAMPLES (picoCuries/Liter) h.:Montlh. tk H )zS 9_ilineY ddParfk-- *' Conn.Rivert -. ,Conn. River

' .~.** - e ossmg* * ,:. j psrem D0wnstream-.

January Alpha < 1.4 < 1.4 < 1.2 < 1.1 Beta < 2.3 < 2.8 < 2.0 < 2.0 Gamma ND

  • ND February Alpha < 1.5 < 0.9 2..9+1.3 < 1.5 Beta < 2.3 5.2+1.6 2.9+1.5 < 2.3 Gamma ND ND V
  • March Alpha < 2.7 < 2.4 < 2.6 < 1.8 Beta < 2.6 < 2.3 < 2.6 < 2.5 Gamma *
  • ND
  • April Alpha 2.5+1.7 < 1.5 < 2.5 3.1+1.7 Beta 4.3+1.4 < 2.3 3.2+1.4 2.0+1.3.

Gamma ND

  • ND ND May Alpha 4.3+1.9 2.2+1.2 2.8+1.6 2.8+1.6 Beta <2.2 2.2+1.4 2.3+1.5. <2.2 Gamma ND. ND ND ND Q June Alpha Beta

< 3.0

< 2.4

< 1.5 2.8+1.4

< 3.0

< 2.4.

< 3.0

< 2.4 Gamma ND ND ND ND July Alpha 3.3+0.8. < 1.4 < 1.2 1.6+0.6 Beta 4.2 + 0.8 < 2.7 < 2.4 2.6 + 0.8 Gamma ND ND ND. N August Alpha < 1.4 < 1.4 < 1.4 < 1.4 Beta < 2.7 < 2.8 < 2.7 5.0+ 1.8 Gamma ND ND ND ND September Alpha < 1.4 < 1.6 < 1.4 < 1.4 Beta <2.4 3.1+1.5, <2.3 < 2.4 Gamma ND NqD ND ND October Alpha < 1.4 < 2.4 --< 1.5 < 1.5 Beta <2 4 < 2.4 < 2.4 <.2.4 Gamma ND ND ND ND November Alpha < 1.4 < 2.6 < 1.4 < 1.4 Beta 3.1+1,.5 2.2+1.4 < 2.3 2.4+1.5 Gamma

  • ND ND December Alpha < 1.5 < 2.8 16 + 1.1 < 1.5 Beta < 2.4 < 2.4 0.7+1.7 < 2.4 Gamma ND
  • ND ND
  • = Naturally Occurring Radionuclides ND = None Detected

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