Japan vs. PNW Cesium levels...

I have to ask this....per this report

http://doc.radiationdefense.jp/dojyou1_en.pdf

Levels of cesium contamination in Tokyo and surrounding areas have been found to be in the 10-30 kbq/m2 range (and more). I have used the available data to surmise that Berkeley got right around 65 bq/m2 of combined cesium activity and that Boise ID got around 98 bq/m2 through the month of March (no data for April, but considering that BRAWM was getting some juice in the their rain through mid-April, I would think that the .68" of rainfall recorded through 4/18 probably contributed ~50bq/m2).

OK - Tokyo, 10,000 to 30,000 bq/m2, all day long. The two west coast data points show less than 200 bq/M2. So when Gunderson speaks of the air in Seattle having half as many "hot particles" as Tokyo, just how can that be? Seriously, I would probably fall out of my chair if I say a soil sample from Seattle, or any where in the PNW, that shows cesium deposition above 1000 bq/m2...

What do you think, fellow forum people?