ML061770589

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State of Vermont, Environmental Radiation Surveillance Report, 2004 Summary. Vermont Department of Health Office of Radiological Health
ML061770589
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 12/31/2004
From:
State of VT, Dept of Health
To:
Office of Nuclear Reactor Regulation
References
%dam200611
Download: ML061770589 (76)
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Text

-I .....- q I-Stat.e of Vermont EnvironmentalRadiationSurveillance Report 2004 Summary Vermont Department of Health Office of Radiological Health I- AI

=1

ENVIRONMENTAL RADIATION SURVEILLANCE

SUMMARY

FOR 2004 ALL SAMPLES FOR THE YEAR 2004 ARE WITHIN THE EXPECTED HISTORICALRANGE Sample Historical 2004 Media Range*

Air Filter Gross Alpha < LLD to 0.0071 < LLD to 0.0057 (pCi/rn 3 )

Gross Beta < LLD to 0.0251 0.0078 to 0.0215 Biota Plant Cs-137 < LLD to 540 < LLD (pCi/kg) K-40 2,000 to 13,000 2,660 to 8,880

- Be-7 < LLD to 4,000 < LLD to 2,570 Fungi Cs-137 50 to 9,000 1050 K-40 1,000 to 12,000 2400 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 to 20.5 (pCi/kg).

K-40 1,000 to 5,000 2,180 to 2,580 Iodine Cartridges 1-131 < LLD < LLD 3

(pci/m )

Milk 1-131 < LLD < LLD (pCi/L)

K-40 1,200 to 2,000 .1,330 to 1,570

Sample Historical 2004 Mediaý Range _________

Sediment Cs-137., < LLD to 500 < LLD to 109 (pC

..... g g) .. K-40 .. 6,000 to 22,000 10,600 to 14,800..,

Be-7 <LLD to 5,000 < LLD to 1,040 Soil Cs-137 < LLD to 500 86 to 137

- -(pCi/kg)

(p.i/.g) .:.. K-40, 7,000,to 20,000 .

11,800 to 14,300

  • Be-7 <-LLD to 600 <..LLD Special Study Be-7 <LLD to 3,000 <LLD to 1,770 Sediments' ,

.(pCi/kg) Co-60 -, <LLD to 2500 < LLD to 254 K-40 , 6,000 to 26,000 10,900 to 20,400

Cs-137 .<LLD to 500 39 to 182 TLD Gross Gamma 0 to 12.5 0 to 12 (mR/quarter)

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

Water Alpha < LLD to 15 < LLD to 8.9 (pCi/L)

Beta < LLD to 15 < LLD to 5.2 LLD = Lower Limit of Detection NS = No Sample

AIR SAMPLES 2004 All Air Samples for the Year 2004 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 2004 range from less than the detection limit to. 0.0057 pCi/m 3 .

The historical range for beta is from less than the detection limit to 0.0251 pCi/m 3 . The samples for 2004 range from less than the detection limit to 0.0215 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 withý 2 sigma (standard deviation) value.

(picCOuries/IuDic meter)

`ISam4i Pro B1#

etttabfOSk t4ice 4.1 1/16-2/11/04 0.0026_+0.0009 .0.0149_+_0.0018 --- 0.0024_+0.0008 " 0.0140-+0.0015 2/11 - 3/25/04 0.0029+ 0.0008 0.0160 +/- 0.0013 0.0027 + 0.0006 149+0.0011

+0.0 3/25 - 4/7/04 . < 0.0020 0.0116 + 0.0024 <.0.0016 , 0.0097 +/- 0.0019 4/7 - 5/12/04 " 0.0038 + 0.0010 .0.0145 + 0.0014 0.0001- + 0.0003* 0.0010 + 0.0005*

5/12- 6/22/04 0.0035+ 0.0008 0.0123 + 0.0012 0.0032 + 0.0007 0.0115 + 0.0010 6/22 - 7/28/04 0.0032 + 0.0009 0.0115 + 0.0013- 0.0021 + 0.0007 0.0095 + 0.0011 7/28 - 8/26/04 0.0028 + 0.0009 0.0151 +-0.0017 " 0.0021 + 0.0008 0.0128 + 0.0014 8/26 - 9/23/04 0.0024 + 0.0010 0.0166 + 0.0018" 0.0024 + 0.0008 0.0116 + 0.0013 9/23 - 10/13/04 0.0039 + 0.0011 0.0215 + 0.0025 0.0026 + 0.0008 0.0143 + 0.0018 10/13 - 11/10/04 0.0038 + 0.0014 0.0208 + 0.0025 0.0017 + 0.0007 0.0110 + 0.0013 11/10 - 12/8/04 0.0035 + 0.0011 0.0198 + 0.0020 0.0033 + 0.0009 0.0148 + 0.0015 12/8 - 1/10/05 0.0005 + 0.0043*** 0.0112 + 0.0080*** 0.0024 + 0.0007 0.0138 + 0.0013

AIR SAMPLES 2004 (picoCuries/Cubic Meter) V 1/16-2/11/04 0.0034 +/- 0.0010 0.0150 4 0.0017 . 0.0028 0.0008 0.0124 +/- 0.0014 2/11 - 3/25/04 0.0049 +/- 0.0009 0.0172 h 0.0013 0.0032 h 0.0007 0.0154 +/- 0.0011 3/25.- 4/7/04 0.0026 - 0.0016 - 0.0106 h 0.0021 0.0025 +/- 0.0014 0.0080 +/- 0.0017 4/7 - 5/12/04 0.0038 d-0.0009 0.0135 +/- 0.0013 0.0032 - 0.0008 0.0110 +/- 0.0011 5/12 - 6/22/04 0.0028 + 0.0007 0.0085 + 0.0010 -0.0023 + 0.0006 . 0.0100 + 0.0010 6/22 -7/28/04 0.0028h 0.0008 0.00874-0.0011 0.0022 + 0.0007 0.0097+0.0011 7/28 - 8/26/04 0.0023 + 0.0008 0.0128 +/- 0.0015 0.0030 +/- 0.0009 0.0123 - 0.0013 8/26 - 9/23/04 0.0025 + 0.0009 0.0124 + 0.0014 0.0023 + 0.0008 0.0118 + 0.0013 9/23 - 10/13/04 0.0030 + 0.0009 0.0171 + 0.0021, 0.0031 + 0.0008 0.0142 + 0.0018 10/13 11/10/04 0.0020 + 0.0008 0.0113 + 0.0014 0.0016 + 0.0007 0.0094+ 0.0012 11/10-' 12/8/04' 0.0032 +0.0010 0.0181 + 0.0018 0.0027 + 0.0009.. 0.0145 + 0.0014 12/8- 1/10/05 0.0049+ 0.0011 0.0195 + 0.0016 0.0029 + 0.0008 0.0135+ 0.0012E]

AIR SAMPLES 2004 (picoCuries/Cubic Meter) o:

AIR SAMPLES 2004 (picoCuries/Cubic Meter) n o 1/16-2/11/04 0.0025 +/- 0.0008 0.0123 "0.0014 2/11 - 3/25/04 0.0038 +/- 0.0007 0.0131 " 0.0010 3/25 -4/7/04 0.0016 + 0.0013 0.0086 + 0.0018 4/7- 5/12/04 0.0022 +/- 0.0007 0.0108 4"0.0011 5/12 - 6/22/04 0.0032 +/- 0.0007- 0.0102 " 0.0010 6/22 - 7/28/04 0.0025 + 0.0007 0.0084 + 0.0010 7/28 8/26/04 0.0026 + 0.0008 0.0117 0.00 13 8/26 - 9/23/04 0.0022 + 0.0008 0.0119 + 0.0013 9/23 - 10/13/04 0.0028 + 0.0008 0.0150 + 0.0019 10/13 - 11/10/04 0.0021 + 0.0007 0.0099 + 0.0012.

11/10 - 12/8/04 0.0028 + 0.0009 0.0139 + 0.0014 12/8 -1110105 0.0023 + 0.0007 0.0133 + 0.0012 ....

/

AIR SAMPLES 2004 (picoCuries/Cubic Meter) 1/16 - 2/11/04 0.0024 + 0.0008 0.0141 + 0.0015 2/11- 3/25/04 0.0049 +/- 0.0008- 1. 0.0158 +/- 0.0012 0.0042+ 0.0008 0.0166 + 0.0012 3/25 -4/7/04-. 0.0021 +/--0.0014, 0.0088+/--0.0019- 0.0022+0.0014 0.0122+0.0021 4/7 - 5/12/04 0.0027 +/- 0.0008, 0.0115 +/- 0.0012 0.0035 + 0.0009 0.0122 + 0.0013 5/12 - 6/22/04 0.0021'+/--0.0006 0.0108 +/- 0.0011 0.0036 + 0.0008 0.0112 + 0.0010 6/22 - 7/28/04 -0.0027 +/- 0.0008.. 0.0105 0.0012 ** **

7/28 - 8/26/04 0.0025 4:0.0008 .0.0131 0.0014 ** **

8/26 - 9/23/04 0.0022 + 0.0008 0.0120 + 0.0014 ** **

9/23 - 10/13/04 0.0027 + 0.0008,, 0.0174 + 0.0020 ** **

10/13 - 11/10/04 0.0017 + 0.0007, 0.0111 +0.0013 ** **

11/10 - 12/8/04 0.0031 + 0.0005 0.0112 + 0.0007 ** **

12/8- 1/10/05 0.0034 + 0.0009 0.0154 + 0.0014 ** **

AIR SAMPLES 2004 (picoCuries/Cubic Meter)

  • Filter'was seated improperly in the holder.

No Data Available Sampling Station was recycled by BUHS Contractors

    • .*High error due to loss of electricity to air sampler resulting in a total air volume of 142.2 m3 for the peiod.

AIR SAMPLES - ALPHA I

Sm Em Court

-B- Brattleboro State Police Guilford Town Garage DATE D&

D- EIHenry Transportation

-* Power Line River Crossing

AIR SAMPLES - ALPHA 0.006 I

0.005 0.004 0.003

-0.002 0.001 'I 0

--- Renaud Brothers

~b SPý ZNN & && SP 59 ~dK -U-Wilmington State*

Highway Garage Vernon Elementary School DATE -- 's- Brattleboro Union High School

-K-Dummerston State Highway Garage

AIR SAMPLES - BETA 0.04 S...

0.03

  • 1 E

n,,

0r* 0.02 k- A 0.01

n. l n,. , , ,,,

S-h 1

I

$----Windham Court County

, , I

-N- BrattleboroState Police Guilford Town DAT * *D &El/Henry Garage DATE Transportation

--. Power Line River

_______Crossing

AIR SAMPLES - BETA 0.04 0.03 S0.02

-0.011 0 I J I 4 D I I I I

--- Renaud Brothers

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

AIR 0 -GUILFORD-

~kaes, GUILFORD I -.

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@1027 Ago SOUTH VERNON.1

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street I ointý1 It.

I ~30 T 0 Celp on 5 CTY.

C r- 0 u ET EXITf lot roo Ind Ain Ctnitr 1.

ARtaAiiM WIN 1,fl it" Bill' Usti@ it lbod Ogianh~l Sfiill till, lot rhN .--

'~"Pull

%a=!= I~mmE~two$' MilleTU U. Olt 011 A&,, 41A 10ý poor off Dv;n

BIOTA 2004 "

All Biota for the Year 2004 are within the expected historical range.

The historical ranges for plant material:

Cesium-137* is less than the detection limit to 540 pCi/kg, Potassium-40** is from 2,000 to 13,000 pCi/kg, Beryllium-7*** is from less than the detection limit to 4,000 pCi/kg.

The plant sample for 2004 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 2004 lies within these historical ranges. See table below.

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 250to 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)

Summer Jul Funi 1050+ 100 2400+ 100 NDI Vernon - North of Vernon Elementary School (picoCuries/kilogram)

-BIOTA 2004 Vernon - Miller Farm Outside Milking Parlor (picoCuries/kilogram) easoi;,o Summer (June) 5 Grass I CXV ff-i ý13 7, ~dRi ND ~oa ssIiumiB

&4' 0 7790+ 1840 ND Vernon - North Side of Blodgett Road (picoCuries/kilogram) -

.Summer Corn Stalks ND 2660+290 585+117 (August) I -

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-136 418 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 S ,Cosmogenic .

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

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I SOUTH I--. VERNON

FISH 2004 All Fish Samples for the Year 2004 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

  • 2004 range from less than the detection limit to 20.5 pCi/kg.

The historical range for Potassium-40** is from 1,000 to 5,000 pCi/kg. The samples for 2004 range from 2,180 to 2,580 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)

Ceiu-37.i

-w ý!Naftural' i noasim0 3-4 20.5+8.1 2580+ 340 3-8 ND 2390+320 Fall (picoCuries/kilogram)

FISH 2004 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.

Ral fon u clde 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 Below Detection Limit LLD= Lower Limit of Detection

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IODINE CARTRIDGES 2004 All Iodine Cartridges for the Year 2004 are within the expected historical range.

The historical range for iodine-131 in air cartridges is less than the detection limit. The samples for 2004 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 1 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 2004 X No Evidence oflodine-131

  • = No Data Available - Sampling Station was recycled by BUHS Contractors

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GUILFOR Wea~fleUheaU 07 / I WILEN GAAG Re HIL

MILK 2004 All Milk Samples for the Year 2004 are within the expected historical range.

The historical. range for Iodine-131 is less than the detection limit. The samples for 2004 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 2004 range from 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.

Usuall 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 (standard deviati0n) value.

Blodgett Farm' (picoCuries/liter) z+SmleeniiodZ4 6 ldiemb131mý Potassmuni40 January ND * ,1480+130 February ND m1500+120 March ND 1470+ 130 April ND -1450+ 130 May ND 1550+ 120 June ND 1540+130 July ND 1330+ 130 August ND 1570+ 140 September ND 1480+ 130'

.October ND 1510+ 130 November ND 1440+ 130 December ND .1570+ 130

MILK 2004 Miller Farm (picoCuries/liter)

January ND 1470+ 110 February ND 1530+ 130 March ND 1520+ 120 April ND 1490+ 120 May ND 1540+ 130 June ND 1560+ 130 July ND 1500+ 120 August ND 1550+ 120 September ND 1510+ 120 October . ND 1430+ 120 November ND 1470+ 120 December ND 1400+110

  • = Terrestrial Radioactivity ND = Below Detection Limit

CIS ro7;t P-ARK

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@ 1100 'I E

@ILL 957 L7 SOUTH VER.WON

SEDIMENT 2004 All Sediment Sampleslfor the Year.2004 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 2004 range from less than the detection limit to 109 pCi/kg.

The historical range for Potassium-40** is from 6,000 to 22,000 pCi/kg. The samples for 2004 range from 10,600 to 14,800 pCi/kg.

The historical range for Beryllium-7*** is from less than the detection limit to 5,000 pCi/kg. The samples for 2004 range from less than the detection limit to 1040 pCi/kg.

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 to1i 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/kilogram 3-3 52.1+29.5 12400+ 1500 1040+440 3-4 109+47 14800+ 1800 ND 3-8 37.3+18.9 11300+1400 ND

SEDIMENT 2004 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-5__.... 69 Sb-126 18 Mn-54 , __- ___15___ "___ '-___ I-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 = Lower Limit of Detection'

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SOIL 2004 All Soil Samples for the Year 2004 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 2004 range from 86 to 137 pCi/kg.

The historical range for Potassium=40** is from 7,000 to 20,000 pCi/kg. The samples for 2004 range from 11,800 to 14,300 pCi/kg.

The historical range for Beryllium-7*** is from less than the detection limit to 600 pCi/kg. The samples for 2004 are less than the detection limit.

Occasional sampling, most often once dayear, is done on other soils as -availableor 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 on the Gamma Spectrometer System using a reverse- germanium detector. Usual spectra include primordial radionuclides, archival Cesuim-137 and occasionalcosmogenic Beryllium-7. Reporting units are picoCuries per kilogram with 2 sigma (standard deviation) value.

Northwest Corner Vermont Yankee Fence (picoCuries/kilogram)

Fall (October) 86.1+25.4 11800+ 1400 ND Miller Farm Outside of Milking Parlor (picoCuries/kilogram)

Summer (June) l 137+25 14300 + 1700 I ND I

SOIL 2004.

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 J-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 1'f

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@0/oz 497-I &Naf SOUTH VERNON

SPECIAL STUDY SEDIMENT 2004 VERMONT YANKEE - NORTH STORM DRAIN OUTFALL All Special Sediments for the Year 2004 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 2004 range from less than the detection limit to 1,770 pCi/kg.

  • The historical range for Cobalt-60*,** is from less than the detection limit to 2,500 pCi/kg. -The samples'ý for 2004 range from less than the detection limit to 254 pCi/kg.

The historical range for Potassium-40****,is from 6,000 to 26,000.pCi/kg. The samples for 2004 range from 10,900 to 20,400 pCi/kg. -.

The historical range for Cesium-137***** is from less than the detection limit to 500 pCi/kg. The samples for 2004 ranged from 38.6 to 182 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 2004.

(picoCurielkilogram)

~~Kow, a__t___i__

S-1 NDI ' 125+34 16700+2100 172+44 S-2 .ND 89.8 +22.2 16500+ 1900 120+28 S-3 * * * **

S-4 * . * "*

S-5 * * *

  • T-1 ND ND 10900 +1300 38.6+14.3 T-2 ND ND 13800+1600 102+27 T-3 ND ND 17200+ 2000 176+ 42 T .-4 .. *_ ,* .....

T-5 * * *

  • U-I ND-, ND 11700+ 1400 '80.3+26.4 U-2 ND ND 15700 +1900 139 +36 U-3 ND-. ND 15400+ 1800 116+27 U-4 "...ND -- ND 16900+2000 80.4+.28.9 U-5 * * *
  • V-I "* * *
  • V-2 * * *
  • V-3* * *
  • V4 ND ND 18300 +2100 106+ 29 V-5 ND ND 13900+ 1700 109-+28 W-1 * * *
  • W-2 * *
  • W-3 * * *
  • W4 ND ND 15100-+1800 117+36 W-5 ND ND 15000_+1800 121+37 X-1 * * *
  • X-2 * - * *
  • X-3 * *
  • X-4 * * *
  • X-5 * * *
  • Y-1i * * *
  • Y-2 * * *
  • Y-3* * *
  • Y4.* * '*
  • Y-5' * * *
  • Z-1 * * *
  • Z-2 * * *
  • Z-3* * *
  • Z-4 * * *
  • 7-5 * * *
  • SPECIAL STUDY - SEDIMENT 2004 VERMONT YANKEE - NORTH STORM DRAIN OUTFALL FALL 2004 (picoCurie/kilogram) :

oc n y~iumfi7 h-u tFCoa I -MO S-1 ND-- 19200+ 2300. .*141+36 S-2 ND ND *18800 + 2200 155+41 S-3*

  • S * *
  • T-1 1770+390 ND 12900+ 1500 134+28 T-2 ND
  • ND 17700+2100 168+34 T-3 ND ND 17700+2100 -- 164+34 T4 * *"*

T-5 * * *

  • U-1i 295 +247 l ND' 15500+1900 114+30 U-2 ND 254+29 17000+ 2000 110 +31 U-3 ND D 20400 +2400 158+ 40 U-4 ND ND 17700+2100 182+43 U-5 * * *
  • V-1 * .* *
  • V-2 * * *
  • V-3* * *
  • V4 ND ND 16700 +2000 118+42 V-5 ND " ND 17000+2000 103+28 W-1 * * " *
  • W-2 * * *,*
  • W-3 * * *
  • W4 ND ND 16700 +2000 " 125+35 "W-5 ND ND 15300+1800 107+25 X-I * * *
  • X-2 * * *
  • X-3 * * *
  • X-4 * * ' *
  • X-5 * * '*
  • Y-1 * * *
  • Y-2 * * *
  • Y-3 * *
  • Y4 * * *
  • Y-5 * * *
  • Z-1 * * *
  • Z-2 * * * .
  • Z-3 .- * * *
  • Z-5 * * *
  • Z.-5 . - * \ * .*

SPECIAL STUDY - SEDIMENT 2004 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.

~Z~dlid,* DRidioulideQ ...... , D 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

- Archival atmospheric testing ND = None Detected LLD = Lower Limit of Detection

rC APPENDIX A

. RADIOLOGICAL SAMPLING PROGRAM OF BOTTOM SEDIMENT NORTH STORM DRAIN

  • ~ORTH U W. X.

S T 5+ + + + + + +

0OBuoy 75 ft. from shore channel -

+ +/ 4 do-+_- --- + +

te

/

0 5 + + + +

A0 2 + J; + + + + +

20 ft.

÷

.1 + + ÷1 + +

f e-,

q

  • *~* ~

~

I .

North Storm Drain.

THERMOLUMINESCENT DOSIMETRY (TLD) DATA 2004 All TLDs for the Year 2004 ar'e'within the expected historical range.

The annual exposure at the boundary of Vermont Yankee is less than 20 1 5 mrem for 2004..

The historical range for TLDs ranges from 0 to 12.5 mR/quarter. The samples for 2004 range from 0 to 12.0 mR/quarter.

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

This method samples direct gamma'radiation in the environment. Detectors utilize crystals,.Whichstore 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 loated where other types of samples are taken (e.g. air, milk, water, etc.). Le'vels of direct radiation from the natu.ral environment are routinely detected at each site. Reporting units are milliRoentgens/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.

The reporting format for TLD exposures will'change in 2005 such that the data produced by the Vermont Department of Health, and that of Vermont Yankee, can be more easily compared. Additionally, 'we anticipate some potential change in the Ireadings themselves due to our adoption of a new type of TLD, an increase in the number of Chips utilized at each station, an increase in the number of.TLD stations which will involve additional lodations, the use of a new laboratory for analysis and changes in background TLD stations. Lastly, the 2005 report will incorporate the use of a fixed background exposure rate. These changes should provide us With more accurate data, greater quality control and more readily compa'rable data:.

EXPOSURE RATES (milliRoentgens/quarter)

Miller Farm, Vernon -2.2+3.6 -1.2+1.8 -2.5+2.6 -2.2+1.3 '0.0 Elementary School Exterior, Vernon * -3.4 + 0.7 1.4 + 2.3 -2.0+7.0 0.7 + 0.2 2.1 Elementary School Interior, Vernon 4.4 + 0.3 5.9 + 4.9 4.7 + 3.6 4.4 + 1.3 .19.4 VY North Fence, Vernon 0.6+1.7 -0.6+2.0 1.5+1.2 3.7+2.4 5.8 VY Parking Lot Fence, Vernon 5.3 + 0.5 1.5 + 0.7 6.1 + 0.9 12.0 + 3.0' 24.9 Dummerston State Highway Garage (IFO)* -1.5 + 3.4 -7.2 + 0.0 -5.5 + 1.2 3.1 + 1.3 3.1 VY Southwest Fence, Vernon 1.4 + 0.5 -3.4 +1.1 -7.5 + 2.0 0.4 + 1.2 1.8 Renaud-Bros. (Puffers), Vernon* 0.2 + 2.2 -4.1 + 4.1 -3.4+ 0.3 3.5 + 0.6 . 3.7 Tyler Hill & Franklin Road,.Vemon -1.8 + 3.6 -0.4 + 2.1 1.3 + 2.4 2.4 + 0.8 3.7 Power Line River Crossing, Vernon

  • 2.4 + 2.6 -2.2 + 1.8 -3.0 + 1.0 3.9 + 2.4' ' 6.3 Blodgett Farm, Vernon " -2.5 + 1.7 -2.7+0.2 -4.8 + 1.4 0.6 + 1.4 . 0.6 Brattleboro U.H.S., Brattleboro* -1.7 + 2.4 ** ** ** **

Henry Transportation/D&E Tree, Guilford * -0.9 + 1.3 -5.1 + 1.5 -3.4+ 1.1 1.5 + 1.8 L5 Guilford Town Highway Garage, Guilford * . -2.1 + 3.6 -0.7+ 1.3 -4.1 + 1.7 3.1 + 0.9 3.1 Evans Farm, Guilford . 1.9 + 0.1 -3.1+0.1 -3.6+2.0 -0.4+1.3 . . 199 Putney Town Clerk, Putney -1.2+1.0 -1.5 + 1.4*. -2.1+2.4 -1.4+0.7 7-0.0.

State Highway Garage, Wilmington * . 1.2+0.0, 1.5+0.0 2.1'+ 5.1 1.4 + 0.4 . 6.2 West Brattleboro State Police* -0.7 + 0:4 -5.3 + 0.4 -2.7 + 2.8 . 2.3 +-2.6: 2.3 Windham County Courthouse, Brattleboro* 0.4 + 0.2 -8.0 + 3.3-,  :-4.1,+ 0.0,.- -5.6 + 0.5 0.4;,

Smead Lumber, Vemon . -3.7+0.7 0.1+3.4 2.7+4.0:- 0.8+1.7 3.6,.,

Rte. 142 N & Pond Rd., Vernon -2.5 + 1.0 -5.3 + 1.1 -4.8 + 1.1 3.1 + 2.2 3.1 EngleDr.,WestRd.,Vemon -1.9+0.0 -4.2+0.6j 0.1 +3.0 -0.1:+3.4A 0.1 Fairman Rd., Vemon 1.0 + 1.8 -5.6 + 0.3 -0.4 + 2.5 2.0.+ 1.0 3.0 Pond Rd. &'Houghton Hill.Rd., Vernon -0.1 + 1.2. -0.5 +1.8 '! .- 4.8 + 2.0 5.2 + 1.0 5.2 Rte. 5, Wolosko, Guilford (10) 1.3 + 0.5 1.6.+ 0.2 -0.8 + 3.2 3.0 + 1.0 5.9 Rte. 5, Andrews Cemetery, Guilford (40) -0.5 + 0.1- -0.8 + 1.1 -0.2 + 5.3 1.4 + 1.9 1.4

EXPOSURE RATES 2004 (milliRoentgens/quarter)

Rte. 5 & Tkaczyk Farm Rd., Guilford (11) -1.0+2.0 -1.6+0.8 -3.1 +-0.5.: 1.4+0.6 1.4 Tyler Hill Rd., Vernon,. ..- 1.7-+ 1.5 -0.1+0.8 0.8+3.8 3.5+0.4 4.3 Rte. 142 N of Transmission Line; Vernon -2.8 + 1.7 -4.0 + 2.3 -5.1 + 0.8 0.6 + 0.2 0.6.

Rte. 5 & Guilford Ctr. Rd., Guilford (14) -2.1 +0.7 -1.0 + 3.6 1.1+ 1.2 2.0 + 0.4 3.1 Guilford Ctr Rd. & Tater Rd., Guilford -3.7 + 3.2 -6.1+ 0.7 -0.5 + 0.6 1.5 + 0.4 A1.5 Weatherhead Hollow & Stony Hill Rds, Gfd -0.4 + 0.4 -4.8 + 0.5 -1.8 + 2.0 1.9 + 1.6 1.9 Huckle Hill Rd. N of VT/MA Border, 0.2+ 1.7 3.6+2.7 -2.1 + 1.4 / 6.1+2.1 9.9 V ernon .... .....

Dummerston School, Dummerston, Rte. 5 -3.2 + 0.7 -5.7+ 1.3 -7.3 + 3.6 4.2 + 0.1 4.2 Pond Rd., Vernon Rec. Area, Vernon -2.1 + 1.0 -5.7 + 0.3 -5.74 1.1 0.6 + 0.8 0.6 Vernon Fire Dept., Vernon, Rte. 142 0.7 + 1.2. -4.1 + 2.2 0.3 + 3.9 1.9 + 1.2 2.9 Rte. 142 S & Pond Rd. Vernon -1.8 + 0.8 -3.8 + 1.0 .-3.8 + 1.2 3.1 + 1.0 3.1 Rte. 142 & Newton Rd., Vernon. . -3.9 + 3.0 -5.3 + 2.8 -3.9 + 1.0 -2.1 + 0.4 0.0 Rte. 142 & Depot St., VT/MA Line, Vernon -1.0 + 2.5 -2.5 +/- 3.0 2.2 + 3.3 1.9 + 0.0 4.1 Gov. Hunt Rd. at Vernon Elem. School - -0.2 + 1.3 -3.6 + 1.2 -3.4 + 0.0 7.4 + 1.6 7.4

  • =Collocated with Air Sampling Station
    • = No Data. BUHS TLD was recycled with the Air Sampling Station.

THERMOLUMINESCENT DOSIMETRY 15 10 L.

t 5 (U

E

-5

.10.

V --- Miller Farm.

-- Vernon Elem School Interior Vernon Elem School Exterior

- X,--VY North Fence-

-*-VY Parking Lot DATE

THERMOLUMINESCENT DOSIMETRY 15 10 a,

t 5 Cu 0*

.0 E

-Dummerston State Highway Garage

VY Southwest Fence

-10 _ -.. . Renaud Brothers

,~~ N'¢ '*;s *, *¢(ýK*"**o"¢

,o -- Y -- Tyler Hill/Franklin Road Power Line River Crossing DATE-

THERMOLUMINESCENT DOSIMETRY 15 10

-t .I . . , .

Us A '2

(

Si *I~ A U/

20 - I I I I I I I

/

N. . .' I.,,

\ //

-5 . .

I ~11 212 '2

- Putney Town Clerk

-10 -- Uf- Wilmington State Highway Garage Brattleboro State Police

--.Y- Windham County

  • = " ' -... DATE" Courthouse

-K-- Smead Lumber

THERMOLUMINESCENT DOSIMETRY Iv.* A%' . -A Rt 142 & Pond Road N

-U- Engle Dr &Wes, Rd

  • Fairman Road

--.--Pond Rd &

Hou hton Hill Rt 5Wolosko

THERMOLUMINESCENT DOSIMETRY 15 10 Ax 5

t:

0 E

-5

- Rt 5 Andrews Cemetary

- Rt 5 & Tkaczyk Farm Rd Tyler Hill Road

-10 Y Rt142Nof Transmission Line

-+ Rt 5 & Guilford Center Rd DATE

THERMOLUMINESCENT DOSIMETRY

  • 15

,10 L.

/~ \~

/ýK Xf I -5 A

- Guilford Center Rd

-10 -

& Tater Rd

- Weatherhead Hollow &Stony Hill Huckle Hill Rd

-- Y-- Dummerston School W Vernon Recreation Area

THERMOLUMINESCENT DOSIMETRY 15 10 LM Q) 5

-. .  : V.."

0

-5 Vernon Fire

-10 Department

-E--Rt 142 S & Pond Road

ýýb Sb ~bQ? SýKSýKRt 142 & Newton Rd 4 -" # Rt 142 &Depot St C~j cj(- Governor Hunt Rd flAT=

f I

THERMOLUMINESCENT DOSIMETRY AT 30 VY SITE BOUNDARY 25 20 t,. I~ Z1

-.- VY North Fence VY Parking Lot VYSW Fence 10 5

0 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 YEAR

9sTATE TLD"O Burlington I

- V I..

  • S.

r

'9 6 En ft I*o.  !

9' I, !

9Y Jum I1" I NMI it.

Oiol MI LZjjl, V V..~'. tb~o Mu~w~i

~ . .~ \*~f~e~scTowe OownhfllAll 111k II two2&4~

TW otis-4 I~ MILEhr 'vs

STATE .TLD3 U'

rri t4 Li ui

I.

I.w 10, I

'I I

r. H -- 1

STATE TLD'TE ROACOV ROAD II 160 LFdS.GuLFR exL RD fGUILFO AhLI, HILLFOR cv heieo VA . ,

WINFAR M

TRAYS.

7EDqTATE;TLD' olkAMAI~~

p^RK SA VERNON ENGLE..De.

ROAD Soo ROADPOPRA

  • ~~~ t~a HL PARK HILL. HLLk.~

TRITIUM IN WATER 2004,

.VERMONT YANKEE (CONNECTICUT RIVER)

All Tritium in Water Samples for the Year 2004 are within the expected historical range.

The historical range for tritium in water is less than the detection limit. The samples for 2004 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 1

(nanoCuries/liter)

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 <10.5 < 0.5 November < 0.5 < 0.5 December < 0.5 < 0.5 I

'606 (J)/SO0 H"A I - .7' rn-u nm-u

T~!T7~fl I

SNO r C 0 WAt.

-C0 STREM X

vp%

IERNON a Af e v

CEMMAL PARK 420 A.

0 "00

'I CHARLE FOX IC!?

400 SA SA 0

4 SOUTH VERNON

WATER SAMPLES 2004 All Water Samples for the Year 2004 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 2004 range from less than the detection limit to 8.9 pCi/l.

The historical range for beta is from less than the detection limit to 15 pCi/l. The samples for 2004 range from less than the detection limit to 5.2 pCi/1.

Water samples are collected monthly from 8 sites. One gallon of water is placed in a reentrant beaker and analyzed 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 2004

  • (picoCuriesfLiter) on~ith, -,oo ,'

January Alpha 6.8+1.2 <2.4 *<2.4 <2.4 Beti 4.8+1.8 < 2.8 '4.1 + 1.8 < 2.8

.. .Im ND NNDGamma February Alpha 5.4+1.0 <2.3 , < 2.3 < 2.2 Beta 5.2+2.0 <3.0. 3.1 +1.9 <3.0 Gamma - ND ND--

March Alpha 5.3+1.1 < 2.7 <2.6 < 2.4 Beta 3.5+2.0 < 3.1 < 3.1 < 3.1 Gamma ' , ND 'ND ND1

-April. - Alpha 5.6+ .1 2.4+ 1.1 <2.5 <1.5 Beta,<z31 - <1.5 . <3.0 <15" Gamma

  • ND ND ND.

May Alpha. 6.4+1.1 < 1.4 < 2.3 < 1.4 Beta <3.1 1.8+ 1.0 5.4+2.0 < 1.4 Gamma .*_ND ND ND June Alpha 6.5+ 1.2 < 2.7 < 2.7 . < 2.5 Beta < 2.8 < 2.8 < 2.8 < 2.8 Gamma ND ND ND ND July Alpha 4.8+1.1 < 2.8 < 2.9 < 1.6

.Beta 4.4 +1.9 < 2.9' < 2.9 < 1.4 Gamma ND . ND ND ND August*** Alpha 8.9+1.4 1.2+1.6 0.3+1.6 2.1+1.7 Beta 4.8+1.9 1.1+1.8 2.8+1.8 1.5 +1.8

_ Gamma

  • ND ND ND September Alpha 6.1 + 1.2 -0.3 + 1.6 0.9 + 1.6 0.6 + 1.7 Beta 4.0+1.9 2.0+1.9 0.2+1.8 2.6+1.9 Gamma"
  • ND ND ND October Alpha 8.9+1.3 0.3+1.5 0.6+1.6 -0.3 +1.4 Beta 4.0+1.9 2.2+1.9 1.4+1.8 -0.2+1.8 Gamma
  • ND' ND ND .

November Alpha 5.9+1.2 2.0+1.5" 1.1+1.4 1.1+1.4 Beta 4.9+1.8 1.1+1.7 2.6+1.8 .2.0+1.7 Gamma

  • ND ND ND December Alpha 7.1 + 1.2 2.2 + 1.4 1.1 + 1.4 3.7 + 1.5 Beta 3.1+1.8 -1.5+1.7 1.9+1.8 0.3+1.7 Gamma
  • ND ND ND

WATER 2004 (picoCuries/Liter)

-ronstm January Alpha < 2.4 No Sample < 2.4 <2.4 Beta < 2.8 Taken ** < 2.8 < 2.8 Gamma ND ND ND February Alpha < 2.3 No Sample 1.8 + 0.8 < 2.2 Beta < 3.0 Taken** 1.9+1.0 < 3.0 Gamma ND ND ND March Alpha < 2.6 < 2.7 < 2.5 < 2.6 Beta < 3.1 < 3.1 < 3.1 < 3.1 Gamma ND ND ND ND April Alpha < 1.5 Lab Accident < 2.6 < 1.5 Beta 2.1+1.0 Sample Not < 3.0 < 2.7 Gamma; ND Analyzed ND ND May Alpha < 2.4 < 1.4 < 2.3 < 2.3 Beta < 3.1 < 1.6 < 3.1 < 3.1

_ Gamma ND ND ND ND

.June Alpha < 2.5. < 2.7 < 2.6 < 2.7 Beta < 2.8 < 2.8 < 2.8 < 2.8 Gamma ND ND ND ND July Alpha < 3.0 < 2.8 < 2.8 < 2.9 Beta < 2.9 < 2.9 < 2.9 < 2.9 Gamma ND ND ND ND August***. Alpha 1.0 + 1.7 0.3 + 1.6 0.6 + 1.6 0.7 + 1.7 Beta 3.6 + 1.8 2.3 + 1.8 2.3 + 1.8 2.5+ 1.8 Gamma ND ND ND ND September Alpha 2.5 + 1.8 0.9 + 1.7 0.9 + 1.6 0.9 + 1.6 Beta 1.8+1.9 1.4+1.8 -0.9+1.8 -2.1+1.8

. Gamma ND ND ND ND October Alpha 1.4+1.6 0.0+1.5 0.6+1.6 -0.6 + 1.5 Beta 3.7+.1.9 1.0+1.8 3.1+ 1.9 2.6+1.9 Gamma ND ND ND ND November Alpha 0+1.3 1.1+1.4 2.0+1.5 0.6+1.4 Beta 1.1+1.7 3.3+1.8 3.5+1.8 2.3+1.8 Gamma ND ND ND ND December Alpha 2.2+1.4 ' 1.6+1.4 0+1.3 0.3+1.3 Beta 1.0+1.8 0.7 + 1.8 1.5+1.8 1.0+1.8 Gamma ND ND ND ND

,WATER 2004

  • - Naturally Occurring Radionuclides
    • = River was frozen at this location in both January and February.

= Data from VDH Laboratory requested to be reported to VDH Radiological Health in the format of the actual measurement and 2 standard deviations. ..

ND = Below Detection Limits A PrioriDetection Limits: Alpha =3 pCi/L

  • Beta 4 pCiIL

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