Data from 8/12 to 10/12

On 7/31/12 I started at Sportsman’s Marina in Hadley, using the Geiger counter on the water in a dry bag. The sample time was 11 min, and the water was 80

High Low Average total
17 3 8 107

At Vernon school inside the car for 46 minutes

High Low Average total
20 0 10 474

At Vernon police station for 10min

High Low Average total
20 9 15 163

Downtown Brattleboro, in car for 55m.

High Low Average total
30 5 13 758

At river in Brattleboro, water 78, for 15 m

High Low Average total
21 7 11 183

At Hinsdale boat launch, water 80, for 14 m. Water low, cooling towers being used

High Low Average total
17 6 9 133

At Northfield boat launch, water 80, for 11m

High Low Average total
15 5 10 121

The river was warm, the cooling towers were being used. Presumably the river was not being used.

Samples over the water were minimally lower.

On 8/20 for 13 d, 1h, at home

High Low Average total
32 0 13 251K

On 8/24 at Head of the Meadows, in Wellfleet, Cape Cod

High Low Average total
28 2 12 63

On 8/28 at DAR Lower Lake, in Goshen, MA while kayaking for 47m

High Low Average total
23 5 12 589

On 9/6 for another round of water sampling. At Sportsman’s for 12 m

High Low Average total
16 2 7 96

At Northfield boat launch for 16 m

High Low Average total
17 5 11 194

At Hinsdale for 17m. Cooling tower in heavy use. Photo taken

High Low Average total
23 6 11 200

At Hinsdale at boat launch for 1h 50 m

High Low Average total
18 2 10 1130

At North Walpole, Pine St, boat launch for 50 minutes

High Low Average total
21 2 11 574

At Vernon Public school for 26 m

High Low Average total
21 7 15 405

The water counts are slightly lower, and the school count is slightly higher

On 9/15 for 6d, 17 h at home

High Low Average total
31 2 13 129K

On 10/17/12 for 14 d, 2h

High Low Average total
29 2 13 286K

On 10/22 I decided to see whether the above water samples were too close to land because the water was not deep. I would take samples on shore, out in the water, rowing my Alden shell, and then back at land. Sportsman’s land for 11 m

High Low Average total
20 7 13 151

For 18 m on the water, water temp 56

High Low Average total
18 3 8 164

For 16 m on the land

High Low Average total
18 6 11

At Northfield on land for 11m

High Low Average total
19 6 12 142

On the water for 17m, water temp 58

High Low Average total
4 8 158

On land for 8m

High Low Average total
18 10 14 117

At Hinsdale on the land for 8m

High Low Average total
16 5 11

On the water, water temp 56, for 25 m

High Low Average total
4 10 265

On land for 8 m

High Low Average total
22 9 13 117

At Brattleboro on the land for 8m

High Low Average total
17 10 13 118

On the water for 19 m, water temp is 54

High Low Average total
14 4 8 171

On the land for 10 m

High Low Average total
24 4 13 148

At Walpole NH boat launch, on the land for 10m

High Low Average total
20 7 12 131

On the water for 20 m, water temp 54

High Low Average total
14 4 8 136

On the land for 8 m

High Low Average total
21 10 15 135

At Vernon public school for 12 m

High Low Average total
23 11 15 191

At put in below Vernon dam, on the land for 9 m

High Low Average total
20 8 11 112

On the water for 15 m, water temp is 58

High Low Average total
13 6 8 136

On the land for 10 m

High Low Average total
14 6 11 122

These data suggest two ideas. First, there is a suggestion that the water from Vermont Yankee at Vernon is heating the water from 54 at N Walpole to 58 just below the dam at Vernon, and that there is some cooling by the time the water gets to Northampton. Second, by taking the time to get in a boat and get out into the middle of the river, that the counts are consistently lower. Taking samples from the edge of the river reflect land values.

On 10/24 at home for 2d, 1h

High Low Average total
30 4 15 44K

These results are high, and the size of sample is large. I wonder what happened?

On 10/26 on the water at Sportsman’s for 1h 23m

High Low Average total
16 2 8 739

On 10/29 on the water at Sportsman’s for 1h 15m

High Low Average total
16 3 8 645

Again, this shows lower results by going out in a boat on the river. Water serves as a moderator of radioactivity and this is suggested above.

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