Tokyo Dome Near Gate 10 (Not the inside of the facility) (Central Tokyo) Sample27

2016/05/28/ 19：00ー19：50

GPS 35.706783,139.752002

Weather: Sunny day　　The day before making the sample: Rainy day
Sample: （wet）(mud)

Sample27

Scintillation Counter DC200（120sec average value）

Major Factor of the hotspot　
Environmentally enriched hotspot under the bridge near Gate 10 of Tokyo Dome.
When it rained, rain water brought fallout to under the bridge. 

Note:
none

The range of the hotspot: 151cm x 95cm

Sampling range of the hotspot: 11cm x 9.5cm
Depth of the hotspot: more than 2.2ｃｍ

Sampling Depth: 2.2ｃｍ

Measurement Data
Measurement Date: 2016/05/29

Cs134   1,968Bq/Kg  ±197Bq/Kg

Cs137 9,356Bq/Kg  ±936Bq/Kg

All Cs   11,324Bq/Kg　
Sample Weights　105.5ｇ
Measurement Time:　1200sec

Gamma Spectroscopy (NaI) Captus 3000B

Readings above the hotspot　

1m　0.06μSv/h、50㎝　0.07μSv/h、5㎝　0.18μSv/h

Readings 3 meters away from the center of the hotspot

1ⅿ　0.08μSv/h、50ｃｍ　0.09μSv/h、5ｃｍ　0.11μSv/h

Sampling Spot

Readings above the hotspot 5cm

Readings above the hotspot 50cm

Readings above the hotspot 1m

Readings 3 meters away from the center of the hotspot

Readings 3 meters away from the center of the hotspot  5cm

Readings 3 meters away from the center of the hotspot  50cm

Readings 3 meters away from the center of the hotspot  1m

Depth of the Sampling Spot

After making a sample of the hotspot

Sampling Spot

Measurement Data

Sampling Spot