ML061770606

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State of Vermont, Environmental Radiation Surveillance Report, 2003 Summary
ML061770606
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 12/31/2003
From:
State of VT, Dept of Health
To:
Office of Nuclear Reactor Regulation
References
%dam200611
Download: ML061770606 (44)
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Text

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ENVIRONMENTAL RADIATION SURVEILLANCE

SUMMARY

FOR 2003 ALL SAMPLES FOR THE YEAR 2003 ARE WITHIN THE EXPECTED HISTORICAL RANGE Sample Historical 2003 Media Range*

Air Filter Gross Alpha <LLD to 0.0071 0.0009 to 0.0050 (pCi/rn 3)

Gross Beta < LLD to 0.0251 0.0055 to 0.0226 Biota Plant Cs-137 < LLD < LLD (pCifkg)

K-40. 2,000 to 13,000 5,460 to 6,160 Be-7 <LLD to 1,500 < LLD to 720 Fungi Cs-137 50 to 9,000 725 to 921 K-40 1,000 to 12,000 1,380 to.2,510 Be-7 < LLD < LLD Cs-134 < LLD to 45* < LLD Fern "Cs-137 .< LLD to 540 NS K-40 4,000 to 11,000 NS Be-7 100 to 4,000 NS Honey Cs-137 < LLD to 200 NS K-40 300 to 2,000 NS Be-7 <LLD NS Fish Cs-.137 <LLD to 100 <LLD (pCi/kg)

K-40 1,000 to 5,000 2,000 to 2,360 Iodine Cartridges 1-131 < LLD < LLD.

(pCi/m3)

Milk 1-131 . < LLD < LLD (pci!L)

K-40 1,200 to 2,000 1,480 to 1,630

Sample Historical 2003 Media Ran e*

Sediment Cs-137 < LLD to 500 < LLD to 79 (pCi/kg) K-40 6,000 to 22,000 10,400 to 12,400 Be-7 < LLD to 5,000 < LLD Soil Cs-137 < LLD to 500 . < LLD to 235 (pCi/kg) K-40 7,000 to 20,000 11,400 to 17,900 Be-7 < LLD to 600 < LLD to 289 Special Study Sediments Be-7 < LLD to 3,000 <LLD to 1,810 (pCi/kg) Co-60 < LLD to 2500 < LLD K-40 6,000 to 26,000 10,400 to 17,900 Cs-137 < LLD to 500 60 to 167 TLD Gross Gamma 0 to 12.5 0 to 8.0 (mR/quarter) *_*

Tritium in Water H-3. < LLD < LLD (nCi/L)

Water Alpha < LLD to 15 < LLD to 7.8 (pCi/L)

Beta < LLD to 15 <LLD to 10.1 LLD = Lower Limit of Detection NS = No Sample

  • Due to Chemobyl event.

C C, C AIR SAMPLES 2003 All Air Samples for the Year 2003 are within the expected historical range.

The historical range for alpha is from less than the detection limit to 0.0071 pCi/m 3. The samples for 2003 range from 0.0009 to 0.0050 pCi/m3 .

The historical range for beta is from less than the detection limit to 0.0251 pCi/m3. The samples for 2003 range from 0.0048 to 0.0226 pCi/m 3.

Air samples are taken at various fixed locations using a line powered piston type compressor operating at a rate of I cubic foot per minute nominal. The sample is collected on a fiberglass 2" diameter filter. Collection time is continuous with a nominal sampling period of four weeks.

The air filters are analyzed for gross alpha and gross beta using an alpha/beta proportional counter. Results are reported in picoCuries per cubic meter of air with 2 sigma (standard deviation) value.

(picoCuries/Cubic Meter)

C .Cf C AIR SAMPLES 2003 (picoCuries/Cubic Meter) 1/7-2/4/03 0.0030 0.0009 0.01914 0.0017 0.0021 10.0007 0.0131 40.0013 2/4 - 3/6/03 0.0036 4 0.0007 0.0154 4 0.0016 0.0048 h 0.0007 0.0159 -0.0015 3/6 - 4/3/03 0.0043 :h 0.0011 0.0163 4 0.0016 0.0038 4.0.0009 0.0146 4 0.0014 4/3 5/23/03

- 0.0027 h 0.0006 0.0130 h 0.0011 0.0028 4 0.0006 0.0108 +/- 0.0009 5/23 - 6/19/03 0.0023 + 0.0009 0.0071 + 0.0012 0.0020 -0.0008 0.0060 + 0.0011 6/19 - 7/23/03 0.0029 k 0.0008 0.0156 +/- 0.0014 0.0025 + 0.0007 0.0141 + 0.0013 7/23 - 8/13/03 --0.0027 + 0.0010 0.0129 - 0.0017 0.0019 h0.0009 0.0106 +/- 0.0015 8/13 - 9/11/03 0.0042 + 0.0008 0.0143 + 0.0015 0.0026 + 0.0006 0.0130_+ 0.0010.

9/11 - 10/15/03 0.0043 + 0.0010 -0.0163 + 0.0015 0.0036 + 0.0008 0.0157 + 0.0013 10/15 - 11/19/03 0.0036 + 0.0009 0.0128 + 0.0013 0.0029 + 0.0007 0.0129+ 0.0012 11/19 - 12/30/03 0.0040 + 0.0008 0.0170 + 0.0013 0.0033 + 0.0006 0.0147 + 0.0011 12/30 - 1/16/04 0.0036 + 0.0013 0.0224 + 0.0026 0.0030 + 0.0011 0.0197 + 0.0021

c C C AIR SAMPLES 2003 (picoCuries/Cubic Meter) I.

ven rST 1/7 - 2/4/03 0.0036 - 0.0009 0.0179.4 0.0016 . 0.0028 + 0.0008 0.0139 + 0.0014 2/4 - 3/6/03 0.0050 h0.0008 0.0172 - 0.0016 0.0050 + 0.0008 0.0163.4 0.0016 3/6- 4/3/03 0.0038 :h 0.0010 0.0167 + 0.0015 0.0040 +/- 0.0010 0.0149 + 0.0014 4/3- 5/23/03 0.0032 + 0.0006 0.0124 + 0.0010 0.0033-+ 0.0006 0.0115 + 0.0010 5/23 - 6/19/03 0.0024 - 0.0009 0.0071+/- 0.0012 0.0020 + 0.0008 0.0065 + 0.0011 6/19 - 7/23/03 0.0029 - 0.0008 0.0148 :E 0.0014 0.0037 + 0.0009 0.0128 + 0.0013 7/23 - 8/13/03 0.0024 + 0.0010 0.0114 +-0.0016 0.0021 + 0.0009 0.0099 +/- 0.0015 8/13 - 9/11/03 0.0041 + 0.0008 0.0147 + 0.0015 0.0031 + 0.0007 :0.0128 + 0.0014 9/11 - 10/15/03 0.0030 + 0.0008 0.0157 + 0.0014 0.0027 + 0.0008 :0.0146 + 0.0013 10/15 - 11/19/03 0.0013 + 0.0006 0.0052 + 0.0009 0.0026 + 0.0007 0.0122 + 0.0012 11/19 - 12/30/03 0.0038 + 0.0007 0.0169+ 0.0013 0.0040 + 0.0008 0.0145 + 0.0012 12/30 - 1/16/04 0.0042 + 0.0013 0.0181 + 0.0021 0.0030 + 0.0011 0.0181 + 0.0021

C AIR SAMPLES 2003 (picoCuries/Cubic Meter) 1/7 - 2/4/03 0.0027 :- 0.0008 0.0 132 +/- 0.00 13 2/4 - 3/6/03 0.0039 - 0.0007 0.0129 +/- 0.0013 3/6 - 4/3/03 0.0034 + 0.0009 0.0128 + 0.0013 4/3.- 5/23/03 0.0024 +/- 0.0005 0.0098 . 0.0009 5/23 - 6119103 0.0019 +/- 0.0007 0.0061 - 0.0011 6/19.- 7/23/03 0.0028 + 0.0007 0.0119 + 0.0012 7/23 - 8/13/03 0.0027 + 0.0010 0.0 103 - 0.0015 8/13 - 9/11/03 0.0032 + 0.0006 0.0124 + 0.0013 9/11 - 10115/03 0.0028 + 0.0008 0.0139 + 0.0013 10115 - 11/19/03 0.0032 + 0.0008 0.0128 + 0.0012 11/19 - 12/30/03 0.0030 + 0.0006 0.0113 + 0.0010 12/30 - 1/16/04 0.0030 + 0.0011 0.0182 + 0.0020

C C. c AIR SAMPLES 2003 (picoCuries/Cubic Meter).

1/7 -2/4/03. 0.0025 1 0.0008 0.0153 4 0.0015 0.0021 + 0.0007 0.0144 + 0.0014 2/4 - 3/6/03 0.0046 k 0.0008 0.0 168 - 0.0016 0.0046 + 0.0007 0.0173 + 0.0011 3/6-4/3/03 0.0036k-0.0010 0.0154:-0.0015 0.0038 + 0.0010 0.0165 + 0.0015 4/3 - 5/23/03 0.0028 k 0.0006 0.0122 - 0.0010 0.0030 + 0.0006 0.0111 + 0.0009 5/23 - 6/19/03 0.0017 :-0.0008 0.0055 - 0.0011 0.0018 + 0.0008 0.0074 + 0.0012 6/19 - 7/23/03 0.0019 +/- 0.0007 0.0127 k0.0013 0.0030 + 0.0008 0.0137 + 0.0013 7/23 - 8/13/03 0.0016 k0.0009 0.0084 +/- 0.0015 0.0029 + 0.0010 0.0116 - 0.0016 8/13 - 9/11/03 0.0029 + 0.0006 0.0126 + 0.0014 0.0037 + 0.0007 0.0139 + 0.0015 9/11 - 10/15/03 0.0034 + 0.0009 0.0137 + 0.0013 0.0030 + 0.0008 0.0165 + 0.0014 10/15 - 11/19/03 0.0032 + 0.0008 0.0137 + 0.0013 0.0009 + 0.0005 0.0048 + 0.0008 11/19 - 12/30/03 0.0040 ++/-0.0007 0.0155 + 0.0012 0.0037 + 0.0007 0.0138 + 0.0011 12/30 - 1/16/04 0.0028 + 0.0011 0.0182 + 0.0021 0.0031 + 0.0011 0.0211 + 0.0022

C C. C AIR SAMPLES 2003 (picoCuries/Cubic Meter) 1/7 - 2/4/03 0.0014 + 0.0006 0.0108 + 0.0013 2/4 - 3/6/03 0.0023 + 0.0006 0.0126 + 0.0014 3/6 - 4/3/03 0.0038 + 0.0010 0.0148 + 0.0014 4/3 - 5/23/03 0.0028 + 0.0006 0.0115 + 0.0010 5/23- 6/19/03 0.0016 + 0.0007 0.0066 + 0.0012 6/19 - 7/23/03 0.0028 + 0'0008 0.0142 + 0.0014 7/23 - 8/13/03 0.0027 +/- 0.0010 0.0114 4. 0.0016 8/13 - 9/11/03 0.0030 +'0.0007 0.0144 + 0.0015 9/11 - 10/15/03 0.0036 + 0.0009 0.0159 + 0.0014 10/15 - 11/19/03 0.0026 + 0.0007 0.0138 + 0.0013 11/19 -12/30/03 0.0026 + 0.0006 . 0.0142 + 0.0012 12/30 - 1/16/04 0.0037 + 0.0012 0.0180 + 0.0021

C C C AIR SAMPLES - ALPHA 0.006 -

0.005 -

0.004 -

C) 0.003 -

0.002 0.001 0

- Wlndham County Court

-- *Brattleboro State Police Guilford Town Garage

  • DATE ----- D & E I Henry Transportation

-- Power Une River Crossing

C C C AIR SAMPLES.- ALPHA.

0.006 0.005 0.004 S0.003 0.002 0.001

-I--+ Renaud Brothers

-- 1WilmIngton State Highway Garage

  • Vernon Elementary School DATE ---- Brattleboro Union High School W-Dummerston State Highway Garage

C C C AIR. SAMPLES -.BETA 0.04 0.03 S0.02 0.01

-4 Windham County Court

- -Brattleboro State Police Gulford Town Garage DATE -(-D & E / Henry Transportation X* Power Line River I. Crossing I

C C C AIR SAMPLES - BETA 0.04 0.03 S

0.02 0.01

--- Renaud Brothers

-U--Wilmington State Highway Garage Vernon Elementary School DATE -X(- Brattleboro Union High School

--- Dummerston State Highway Garage

BIOTA 2003 All Biota for the Year 2003 are within the expected historical range.

The historical ranges for plant material:

Cesium-137* is less than the detection limit, Potassium-40** is from 2,000 to 13,000 pCi/kg, Beryllium-7*** is from less than the detection limit to 1,500 pCi/kg.

The plant sample for 2003 lies within these historical ranges. See table below.

The historical ranges for fungi:

Cesium-137 is 50 to 9,000 pCi/kg, Potassium-40 is from 1,000 to 12,000 pCi/kg, Beryllium-7 is less than the detection limit, Cesium-134**** is from less than the detection limit to 45 pCi/kg.

The fungi sample for 2003 lies within these historical ranges. See table below.

The historical ranges for ferns:

Cesium-137 is from less than the detection limit to 540 pCi/kg, Potassium-40 is from 4,000 to 11,000 pCi/kg, Beryllium-7 is from 100 to 4,000 pCi/kg.

There was no fern sample for 2003.

The historical ranges for honey:

Cesium-137 is from less than the detection limit to 200 pCi/kg, Potassium-40 is from 300 to 2,000 pCi/kg, Beryllium-7 is less than the detection limit.

Honey is no longer sampled.

Occasional sampling, most often once a year, is done on forage or 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 Gamma Spectrometer System using a reverse germanium detector. Usual spectra include primordial radionuclides, archival Cesuim-137 and occasional cosmogenic Beryllium-7.

Reporting units are picoCuries per kilogram with 2 sigma (standard deviation) value.

Vernon - Rte 142 Indian Point Park (picoCuries/kilogram)

Vernon - Northwest Fence of Vt. Yankee (picoCuries/kilogram)

S aso iP , ota* . ii*.,ii0*4OV 2B.rBlium7A**

Spring (June) Grass ND 5710+540 362+ 127 Fall (October) Alfalfa ND 6160 + 670 720 + 228 Vernon - North of Vernon Elementary School (picoCuries/kilogram)

-Samples were also evaluated for the radionuclides listed below. None were present in excess of the lower limits of detection.

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
  • = Archival atmospheric testing
    • = Terrestrial radioactivity

= Cosmogenic

= Chernobyl event ND = Below Detection Limits LLD = Lower Limit of Detection

FISH 2003 All Fish Samples for the Year 2003 are within the expected historical range.

The historical range for Cesium-137* is from less than the detection limit to 100 pCi/kg. The samples for 2003 range are less than the detection limit.

The historical range for Potassium-40** is from 1,000 to 5,000 pCi/kg. The samples for 2003 range from 2,000 to 2,360 pCi/kg.

Two locations (3-4 Vernon Pond and 3-8 Route 9 Highway bridge) provide fish samples in the Spring and Fall of about one kilogram for each sample. Fish are captured via an electroshock method. The fish are frozen whole, weighed, and chopped or blended (entire) for loading into a reentrant beaker. It is subsequently analyzed with a -Gamma Spectrometer System using a reverse germanium -detector.

Radionuclides detected usually include naturally occurring Potassium-40, Thorium and Uranium with daughters, archival Cs-137 due.to former open atmospheric nuclear tests, and occasional traces .of cosmogenic Beryllium-7. Reporting units are picoCuries per kilogram with 2 sigma (standard deviation) value.

Spring (picoCuries/kilogram) 34ND I 2360 +350 3-8 ND 2000+310 Fall (picoCuries/kilogram)

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

Cr-5 1 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

  • = Archival atmospheric testing
    • = Terrestrial radioactivity ND = Below Detection Limit LLD = Lower Limit of Detection

IODINE CARTRIDGES 2003 All Iodine Cartridges for the Year 2003 are within the expected historical range.

The historical range for iodine-131 in air cartridges is less than the detection limit. The samples for 2003 were less than the detection limit.

Air samples are taken at various fixed locations using a line powered piston type compressor operating at a rate of I cubic foot per minute nominal. The sample is collected on a charcoal cartridge loaded with TEDA for iodine collection. The charcoal cartridge follows the filtration of air by a glass fiber filter in the air sampling train at all air sampling stations. Collection time is continuous with a nominal sampling period of four weeks. Response to Chernobyl iodine release was marked, proving the sensitivity to environmental trace levels of iodine of this system. The air cartridges are analyzed for Iodine-131 with the Gamma Spectrometer System using a reverse germanium detector. The nominal lower limit of detection is 2 x 10.5 pCi/l of air.

IODINE CARTRIDGES 2003 X = No Evidence of Iodine-131

MILK 2003 All Milk Samples for the Year 2003 .are within the expected historical range.

The historical range for Iodine-131 is less than the detection limit. The samples for 2003 are all less than the detection limit.

The historical range for Potassium-40* is from 1,200 to 2,000 pCi/L. The samples for 2003 range from 1,480 tol,630 pCi/L.

Milk sampling is performed .at a frequency of once per month. The samples are measured, placed into reentrant beakers and analyzed in the Gamma Spectrometer System using a reverse germanium detector.

Usual spectra include terrestrial Potassium-40. The nominal detection limit for Iodine-131 is 10 picoCuries/liter. Significant indications of the presence of any other radionuclides are investigated and reported if found. Reporting units are picoCuries per liter with 2 sigma (standarddeviation) value.

Blodgett Farm (picoCuries/liter)

.z*oaple'ex~* *..V I".-oaslu,U,*n::"'"-A:

January NI) 1560+ 120 February ND 1500+ 110 March ND 1580+ 140 April, ND 1580 +120' May ND 1590 +140 June ND 1530_+_110

  • July ND 1530 +120

.-August ND 1590+ 120 September ND 1560+ 130 October ND .. 1570+ 120 November ND 1480+110 December ND 1600+ 120

Miller Farm Q. (picoCuries/liter)

January ND 1630+ 130 February ND 1540+ 120 March ND 1630+ 120 April ND 1580+ 140 May ND 1520+110 June ND 1580+ 140 July ND 1550+130 August ND 1510+ 120 September ND 1510+ 130.

October ND 1330-+ 120 November ND 1590+140.

December ND 1480+ 130

  • = Tenrestrial Radioactivity ND = Below Detection Limit

-SEDIMENT 2003 All Sediment Samples for the Year 2003 are within the expected historical range.

The historical range for'Cesium-137* is firom less than the detection limit to 500 pCi/kg. The samples for 2003 range from less than the detection limit to 79 pCi/kg.

The historical range for Potassium-40** is from 6,000 to 22,000 pCi/kg. The samples for 2003 range from 10,400 to 12,400 pCi/kg.

The historical range for Beryllium-7*** .is from less than the detection limit to 5,000 pCi/kg. The samples for 2003 are less than the detection limit.

Sediment samples are taken biannually in the spring and fall. A sediment sample is taken ranging from approximately 0.75 to 1.25 kilograms from the Connecticut River at three separate locations in the spring and fall of each year. The sample is dried, weighed on a top loaded balance and placed in a 500 milliliter HDPE bottle. The sample is counted on the Gamma Spectrometer System using a reverse germanium detector. A normal spectrum will include primordial radionuclides with daughters, and archival Cesium-137 from former open atmospheric nuclear testing. On occasion short-lived cosmogenic Beryllium-7 can be discerned. Reporting units are picoCuries per kilogram with 2 sigma (standard deviation) value.

SPRING (pCi/kilogram)

FALL pCi/kilogramr I-

Samples were also evaluated for the radionuclides listed below. None were present in excess of the lower limits of detectability 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

  • = Archival atmospheric testing
    • = Terrestrial radioactivity

= Cosmogenic ND = None Detected LLD = Lowver Limit of Detection

SOIL 2003 All Soil Samples for the Year 2003 are within the expected historical range.

The historical range for Cesium-137* is from less than the detection limit to 500 pCi/kg. The samples for 2003 range from less than the detection limit to 235 pCi/kg.

The historical range for Potassium-40** is from 7,000 to 20,000 pCi/kg. The sample for 2003 ranges from 11,400 to 17,900 pCi/kg.

The historical range for Beryllium-7*** is from less than the detection limit to 600 pCi/kg. The sample for 2003 ranges from less than the detection limit to 289 pCi/kg.

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 frorii 250 to .1,000 grams. *The samples are weighed, dried and placed in 500 ml wide mouth HDPE bottles and analyzed on the Gamma Spectrometer System using a reverse germanium detector. Usual spectra include primordial radionuclides, archival.Cesuim-137 and occasional cosmogenic Beryllium-7. Reporting units are picoCuries per kilogram with 2 sigma (standard deviation) value.

Northwest Corner Vermont Yankee Fence (picoCuries/kilogram)

Spring (June) 192+41 17900+ 1500 ND Fall (October) 170+30 13500+ 1600 289+ 166

  • Vermont Yankee (picoCuries/kilogram) 12/18/2003 Returned Soil' 01 70.8 +20.9 12100 +1400 ND 12/18/2003 Returned Soil 02 105+27 15400 + 3700 ND 12/18/2003 Returned Soil 03 97.5 + 29.7 13500 + 3200 ND 12/18/2003 Returned Soil 04 .84.2 + 25.2 15300 + 1800 ND 12/18/2003 Returned Soil 05' 72.0 +22.6 13100+ 3100 ND 12/18/2003 Returned Soil 06 33.3 + 21.2 15000 + 3600 ND 12/18/2003 Returned Soil 07 -58.8 + 20.3 13200 + 1500 ND 12/18/2003. Returned Soil 08 61.8 + 23.3 *14500 + 1700 ND

.12/18/2003 In-Situ Soil SE-IT ND 12800 + 3000 ND 12/18/2003 In-Situ Soil SE-1B ND 13500 + 1600 ND 12/18/2003 In-Situ Soil E-2T ND 14600 + 3500 ND 12/18/2003 In-Situ Soil E-2B ND 13800 + 1600 ND

-12/18/2003 In-Situ Soil NE-3T ND 13400 + 3200 ND 12/18/2003 In-Situ Soil NE-3B 77.5 + 21.2 16500 + 1900 ND

12/18/2003 In-Situ Soil N-4T 115 + 28 14200 + 3400 ND 12/18/2003 In-Situ Soil . N4B ND 15000+ 1700 ND 12/-18/2003 In-Situ Soil NW-5T 133 + 27. 12400_+3000 ND 12/18/2003 In-Situ Soil NW-5B 142 + 25 11400 + 1300 ND 12/18/2003 In-Situ Soil W-6T 235 +36 12700+ 3100 ND 12/18/2003 In-Situ Soil W-6B *106+28 12600+ 3100 ND 12/18/2003 In-Situ Soil SW-7T 32.8_+17.4 12800_+3100 ND 12/18/2003 In-Situ Soil SW-7B ND 16100-+1900 ND 12/30/2003 Disturbed In- SE-1 ND 13000+ 1500 ND Situ Soil 12/30/2003 Disturbed In- NE-3 ND 13300 + 3200 ND Situ Soil 12/30/2003 Disturbed In- SW-7 ND 14800 + 3600 ND Situ Soil 12/30/2003 In-Situ Soil E-8 ND 14000 + 1600 ND 12/30/2003 In-Situ Soil SE-9 ND 13400 + 3200 ND Samples were also evaluated for the radionuclides listed below. None were present in excess of the lower limits of detectability whichare 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

  • = Archival atmospheric testing
    • =Terrestrial radioactivity

= Cosmogenic ND = Below Detection Limits LLD = Lower Limit of Detection

SPECIAL STUDY - SEDIMENT 2003 VERMONT YANKEE - NORTH STORM DRAIN OUTFALL All Special Sediments for the Year 2003 are within the expected historical range.

The historical range for Beryllium-7** is from less than the detection limit to 3,000 pCi/kg. The samples for 2003 range from less than the detection limit to 1,810 pCi/kg.

The historical range for Cobalt-60*** is from less than the detection limit to 2,500 pCi/kg. The samples for 2003 were less than the detection limit.

The historical range for Potassium-40**** is from 6,000 to 26,000 pCi/kg. The samples for 2003 range from 10,400 to 17,900 pCi/kg.

The historical range for Cesium-137***** is from less than the detection limit to 500 pCi/kg. The samples for 2003 ranged from 60 to 167 pCi/kg.

Special sediment samples are taken biannually in the spring and fall. A sediment. sample is taken ranging from approximately 0.75 to 1.25 kilograms from the Connecticut River at up to 40 separate locations in a grid around the discharge structure. .The sample is dried, weighed on a top loaded balance and placed in a 500 milliliter HDPE bottle. The sample is counted on the Gamma Spectrometer System using a reverse germanium detector. A normal spectrum will include primordial radionuclides with daughters, and archival Cesium-137 from former open atmospheric nuclear testing. On occasion short-lived cosmogenic

  • ,) Beryllium-7 and Cobalt-60 can be discerned. Reporting units are picoCuries per kilogram with 2 sigma (standard deviation) value.

SPRING 2003 (picoCurie/kilogram)

FALL 2003 (picoCurie/kilogram)

S-1 ND ND 17600 +4200 108+45 S-2 ND ND 17100+ 4100 142+41 S-3 * * *

  • S-4 * * **

S-5 * * *

  • T-1 1810+450 ND 13500+-1600 60+25 T-2 965+ 351 ND 17100 +2000 143+37 T-3 ND ND 17900 + 4300 135 +42 T4 * * *
  • T-5 * * *
  • U-1 ND ND 15800 +3800 127 +33 U-2 ND ND 16500+ 1900 124 +32 U-3 ND ND -17100 + 4100 129+38 U-4 ND ND 16900+2000 111+34 U-5 * * *
  • V-1 * *
  • V-2 * * *
  • V-3 * *
  • V4 ND ND 16200 +3900 167+40.

V-5 ND ND 15100+1800 93+26 W-1 * * *

  • W-2 * * *
  • W-3 * * *
  • W4 ND ND 15600 + 3800 134 +37 W-5 ND ND 15600 +1800 112+24 X-1 * * * *

.X-2 " * *

  • X-3 * * *
  • X-4 * * **
  • X-5 * * *
  • Y-1 * * *
  • Y-2 *
  • Y-3 * * *
  • Y-4 * * *
  • Y-5* *
  • Z-1 * " *
  • Z-2 * *
  • Z-3 * * *
  • 7t4 * * *
  • Z-5'* * *
  • Samples were also evaluated for the radionuclides listed below. None were present in excess of the lower limits of detectability 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

  • - Location not included for sampling Cosmogenic
  • =.Hot particles from Vermont Yankee Nuclear Power Plant

= Terrestrial radioactivity S**= Archival atmospheric testing ND = None Detected LLD = Lower Limit of Detection

C C C THERMOLUMINESCENT DOSIMETRY (TLD) DATA 2003 All TLDs for the Year 2003 are within the expected historical range.

The annual exposure at the boundary of Vermont Yankee is less than 20 mrem for 2003.

The historical range for.TLDs ranges from 0 to 12.5 mR/quarter. The samples for 2003 range from 0 to 8.0 mR/quarter.

Thermoluminescent detectors are provided to the State of Vermont by Proxtonics, Inc. and are deployed for a quarterly sampling interval.

This method samples direct gamma radiation in the environment.- Detectors utilize crystals, which store energy from gamma and x-rays until analyzed for their cumulative energy exposure experience. Vermont has forty selected locations where direct radiation levels are measured for.

Some of these sites are located where other types of samples are taken (e.g. air, milk, water, etc.). Levels of direct radiation from the natural environment are routinely detected'at each site. Reporting units are milliRoentgefis/quarter .with 2 sigma (standard deviation) value. The exposure above background, as listed below, is the exposure for each location minus the average of the exposures at the Putney.Town Clerk's Office in Putney and the Vermont State Highway Garage in Wilmington.

EXPOSURE RATES (milliRoentgens/quarter)

Miller Farm, Vernon 0.3 + 2.7 -0.8 + 1.0 -1.9 + 0.8 2.4 + 0.8 2.7 Elementary School Exterior, Vernon

  • 0.1 + 0.5" -1.1 + 5.4 -1.5 + 0.1 -2.1 + 2.3 0.1 Elementary School Interior, Vernon 8.0 + 0.3 0.7 + 0.9 0.1 + 0.4 3.8 + 0.0 12.6 VY North Fence, Vernon.. 0.3 + 3.2 2.4 + 1.8 -8.6'+ 2.2 1.2 + 2.3 3.9 VY Parking Lot Fence, Vernon 4.2 + 0.8 3.8 + 3.5 -0.8 + 0.6 7.4 + 3.2 15.4*

Dummerston State Highway Garage (IFO)* -0.9 + 0.1 0.1 + 1.7 -3.6 + 0.6 -3.7 + 1.6 0.1 VY Southwest Fence, Vernon 6.1 + 2.9 1.8 + 0.1 -4.3 + 0.3 -2.1 + 3.4 7.9 Renaud Bros. (Puffers), Vernon* 3.9 + 0.0 0.4 + 2.5 1.1 + 3.6 2.7 + 2.3 8.1 Tyler Hill & Franklin Road, Vernon 5.9 + 1.0 -0.8 + 3.0 -1.3 + 5.4 -1.7 + 2.3 5.9 Power Line River Crossing, Vernon

  • 3.9 + 3.1 0.1 + 2.2 -0.4 + 0.4 -2.9 + 0.2 4.0 Blodgett Farm, Vernon 0.8+3.2 1.9 + 3.4 -1.4+ 1.0 1.2+ 1.5 3.9 Brattleboro U.H.S., Brattleboro* 0.1 + 0.2 -0.9 + 2.2 -4.6 + 7.2 -2.0 + 2.1 0.1 Henry Transportation/D&E Tree, Guilford * -1.6 + 0.2 -0.3 + 1.4 0.1 + 2.6 -0.6 + 1.3 0.1 Guilford Town Highway Garage, Guilford
  • 3.3 + 3.9 -0.4 + 3.8 -8.4 + 1.6 1.2 + 1.6 4.5

C C C.

EXPOSURE RATES (milliRoentgens/quarter)

Evans Farm, Guilford -0.1 + 0.5 -2.6 + 0.6 -6.5 + 0.4 -3.8 + 0.2 0 Putney Town Clerk, Putney -0.1 +0.7 -2.0+0.8 -2.1 +4.5 -3.1 + 1.3 -7.3****

State Highway Garage, Wilmington

  • 0.1 +0.1 2.0-+2.5 2.1 +2.1 3.1 + 1.1 7.3****

West Brattleboro State Police* -2.5 + 0.4 -3.0 + 4.4 -4.6 + 1.2 -2.1 + 1.6 0 Windham County Courthouse, Brattleboro* -4.3 + 0.2 -5.3 +2.2 -7.4 + 0.5 -4.7 + 0.1 0 Smead Lumber, Vernon -3.0 + 1.0 3.1 +2.6 -4.9+2.2 -3.0+2.1 3.1 Rte. 142 N &Pond Rd., Vernon -0.6 + 0.3 2.5 + 1.1 -5.0 + 2.0 -1.7 + 0.0 2.5 Engle Dr., West Rd., Vernon -1.4+ 1.4 -0.6+ 1.3 -3.1+ 0.6 -2.6+2.7 0 Fairman Rd., Vernon -0.6 + 3.1 -0.3 + 0.5 -4.2 + 0.0 -2.2 + 0.4 0 Pond Rd. & Houghton Hill Rd., Vernon -1.2 + 0.7 -0.7 + 5.5 -5.4 + 1.7 -2.7 + 1.9 0 Rte. 5, Wolosko, Guilford (10) -1.5 + 1.3 2.0 + 4.7 -4.9 + 1.4 -1.8 + 3.9 2.0 Rte. 5, Andrews Cemetery, Guilford (40) 0.1 + 2.8 1.5 + 2.7 -2.9 + 0.6 -2.4 + 18 1.6 Rte. 5 & Tkaczyk Farm Rd., Guilford (11) 3.3 + 1.7 0.4 + 0.3 -3.1 + 0.9 0.2 + 1.2 3.9 Tyler Hill Rd., Vernon -3.0+2.6 -0.7+0.5 -6.6 + 0.1 -3.1+2.2 0 Rte. 142 N of Transmission Line, Vernon 8.1 + 21.3*** -1.0 + 3.4 -4.7 + 0.5 -2.2 + 2.2 8.1 Rte. 5 & Guilford Ctr. Rd., Guilford (14) 0.9 + 1.1 -2.0 + 0.8 0.8 + 2.3 -3.3 + 3.6 1.7 Guilford Ctr Rd. & Tater Rd., Guilford -0.9 + 1.1 -1.5 + 3.9 -3.0 + 0.6 -0.1 + 1.9 0 Weatherhead Hollow & Stony Hill Rds, Gfd -3.5 + 1.7 -2.2 + 1.8 -1.9 + 0.1 -4.1 +/- 2.0 0 Huckle Hill Rd. N of VT/MA Border, 3.0 + 0.8 2.1 + 0.3 -4.8 + 2.5 0.9 + 0.5 6.0 Vernon Dummerston School, Dummerston, Rte. 5 -1.5 + 0.0 0.7 + 4.1 2.2 + 1.4 -3.5 + 2.7 2.9 Pond Rd., Vernon Rec. Area, Vernon -4.3 + 2.3 0.7 + 1.9 -7.7 + 0.6 -4.9 + 0.6 0.7 Vernon Fire Dept., Vernon, Rte. 142 0.1 + 2.4 0.2 + 2.4 -3.2 + 1.8 0.6 + 1.2 0.9 Rte. 142 S & Pond Rd., Vernon -0.3 + 1.7 0.5 +.3.9 -3.3 + 1.0 * -1.6 + 2.7 0.5 Rte. 142 &-Newton Rd., Vernon -2.2 + 0.6 -1.7 + 2.5 -4.5 + 0.8 -2.9 + 0.1 0 Rte. 142 & Depot St., VT/MA Line, Vernon 1.4 + 2.8 -1.0 + 2.3 -0.7 + 4.3 2.4 + 0.8 3.8 Gov. Hunt Rd. at Vernon Elem. School 1.1 + 0.8 0.2 + 2.0 -0.3 + 1.7 2.2 + 2.3 3.5

  • = Collocated with Air Sampling Station
  • -Dummerston School TLD was not found.

Average of 2 readings, 19.3 and 34.4 mR.

= Used to determine average regional background.

C C C THERMOLUMINESCENT DOSIMETRY 15-n J I U~~$& ~ ~

5

  • 0 E -5

-10DA Miller Farm

--U-Vernon Elem School Exterior Vernon Elem School Interior

-f-- VY North Fence YWParking Lot Fence DATE

C C C THERMOLUMINESCENT DOSIMETRY 15 104 L.

5-Cu 0-E

---. Dummerston State Highway Garage

--- VY Southwest Fence

  • Renaud Brothers

?-10~ b -X--Tyler Hill/Franklin Road

-K Power Une River Crossing DATE

.C C C THERMOLUMINESCENT DOSIMETRY 15-10-5 0

E

- Blodgett Farm

-5

-U- BUHS

.1- ETreeo/Henry

Guilford Town Garage

-10 W---Evans Farm SP 01ý DATE

C C C THERMOLUMINESCENT DOSIMETRY 15 10 5-0-

E

-5

- Putney Town Clerk

-10 ---* WItmlngton State

'-N N C- Cv, cv, M, M, Highway Garage C -' C 99 9 Nz 9a 9 9 Bratt eboro State Police.

C1 M-.~ 0 CO M7 C.)

~ *----Windham County

-, -0 0 Courthouse DATE -* Smead Lumber

C C C THERMOLUMINESCENT DOSIMETRY 15 10 LM 5..

0 E

-5 0 Rt 5 Andrews Cemetary Farm Rd Tyler Hill Road

-10 -X- Rt 142 N of o

  • 0. o C) N 'N S! ov) Mv) M Transmisslon Lne 9  ? 9 9, 9.9u9 9,c: 9 9 9 9 -Rt 5 &Guilford C '

o ~ g. ~

cc C Center Rd ca V.. W -,A I-,

DATE

C .CC THERMOLUMINESCENT DOSIMETRY 15 10 I.._

1 5 (U

E

-- -Rt 142 Pond

" Road N

--- Engle Dr &West SFalrman Road SSO 10-\- Pond Rd&

q IS$ &-- Hou ton Hill U* A "I"1 --- Rt 5Wolosko LJMI~

C C C C C

.c THERMOLUMINESCENT DOSIMETRY 1'5-10-m-

t5 -

0-E

-5"

-10 -- Vernon Fire Department

--- Rt 42 S & Pond Road

  • ,*oO

- * *,*oO Rt 142 & Newton Rd

-- X- Rt 142 & Depot St W Governor Hunt Rd

)ATE

C C C THERMOLUMINESCENT DOSIMETRY 15 10 5

0

-5 E

-10

-15 DATE ---- Vermont Dept of Health - A

TRITIUM IN WATER 2003 VERMONT YANKEE (CONNECTICUT RIVER)

All Tritium in Water Samples for the Year 2003 are within the expected historical range.

The historical range for tritium in water is less than the detection limit. The samples for 2003 are less than the detection limit.

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). The samples are analyzed by liquid scintillation counting. The detection limit for tritium is 0.5 nCi/l. Reporting units are nanoCuries/liter with 2 sigma (standard deviation) value.

WATER (nanoCuries/liter)

WATER SAMPLES 2003 All Water Samples for the Year 2003 are within the expected historical range.

The historical range for alpha is from less than the detection limit to 15 pCi/1. The samples for 2003 range from less than the detection limit to 7.8 pCi/l.

The historical range for beta is from less than the detection limit to 15 pCi/1. The samples for 2003 range from less than the detection limit to 10.1 pCi/l.

Water samples are collected monthly from 8 sites. One gallon of water. is placed in a reentrant beaker and anal*,zed on the Gamma spectrometer system using a reverse germanium detector. Usual spectra include primordial radionuclides. Reporting units are picoCuries per liter with 2 sigma (standard deviation) value.

WATER (picoCuries/Liter)

je I ,- - 0 September Alpha 6.5 + 1.2 < 2.8 3.3 + 2.0 < 2.6 Beta < 3.4 < 3.4 4< 3.4 < 3.4 Gamma ND ND ND October Alpha 6.9 + 1.1 < 2.9 < 3.0 < 2.9 Beta 3.5+ 1.8 < 28 < 2.8 < 2.8 Gamma ND ND ND November- Alpha 5.8+ 1.1 < 2.2 < 2.2 < 2.2 Beta 3.9+1.8 < 2.8 < 2.8 < 2.8 Gamma

  • ND ND ND December Alpha 5.9+1.2 < 1.4 < 1.5 < 2.6 Beta 3.1+1.9 < 1.5 < 1.5 < 3.0 Gamma ND ND ND ND WATER (picoCuries/Liter) l* * -;** "*..'. *. e - ossili, -. -
  • l-January Alpha < 2.6 No Sample < 2.6 < 2.6 Beta < 2.9 Taken** < 2.9 < 2.9 Gam*
  • February Alpha < 3.1 No Sample < 3.1 < 3.0 Beta < 2.7 Taken** < 2.7 < 2.7 Gamma ND ND ND March Alpha < 3.0 No Sample < 1.3 < 3.0 Beta < 30 Taken** < 1.5 < 3.0 Gamma ND ND ND April Alpha < 2.9 < 1.7 < 2.9 < 2.8 Beta < 2.8 2.1+0.9 < 2.8 < 2.8 Gamma ND. ND ND ND May Alpha < 1.5 < 2.5 < 1.5 <.2.5 Beta < 2.3 4.0+1.8 < 2.3 3.6+1.8 Gamma ND ND ND ND June Alpha < 3.0 <.2.8 < 2.9 < 2.9 Beta 10.1+2.1 < 3.1 <3.1 < 3.1 Gamma ND ND ND ND

f

~Mn T4~~. an . 'i~yei

............ `-troam;(3amp July Alpha < 2.6 < 2.8 < 2.6 < 2.7 Beta < 2.9 < 2.9 < 2.9 < 2.9 Gamma ND ND ND ND August Alpha < 2.6 < 2.5 < 2.5 < 2.5.

Beta < 3.2 < 3.2 < 3.2 < 3.2 Gamma ND ND ND ND September Alpha < 2.8 < 2.9 < 2.9 < 2.8 Beta 3.9+2.1 < 3.4 < 3.4 < 3.4 Gamma ND ND ND ND October Alpha < 3.0 < 3.0 < 3.0 < 2.9 Beta < 2.8 < 2.8 < 2.8 < 2.8 Gamma 'ND ND ND ND November Alpha < 2.3 < 2.2 < 2.2 < 2.2 Beta < 2.8 < 2.8 < 2.8 < 2.8 Gamma ND ND ND ND Alpha < 1.4 1.9 +/- 1.1 < 1.5 < 1.5

',r* December Beta < 1.5 . 2.2+1.0 < 1.5 < 1.5 Gamma ND ND ND NýD

  • = Naturally Occurring Radionuclides
    • = River was frozen at this location at the time of sampling.

ND = Below Detection Limits

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