From the press release of Tepco, even though it’s after their manipulation,data shows sea contamination is in the serious situation.
About the intake of reactor 1~4,they measured
Strontium 89 ; 200 Bq/ Kg
Strontium 90 ; 250 Bq/ Kg
Even in the area,they measure Strontium from the ground.
Strontium 89
500 m of North west from the reactors ; 180 Bq/Kg
500 m of South west from the reactors ; 200 Bq/Kg
Strontium 90
500 m of North west from the reactors ; 250 Bq/Kg
500 m of South west from the reactors ; 320 Bq/Kg
It’s rational the area is also full of plutonium and uranium.