Officials say the purpose of the testing is to determine levels of radioactivity or the presence of radioactive substances in things like fresh fruit or other produce.
Blood samples, showed increasing levels of radioactivity.
The levels of radioactivity are small compared with the releases in 2011.
Low levels of radioactivity were seeping into produce and raw milk.
In northern Scandinavia, in the nineteen-sixties, Laplanders began to show high levels of radioactivity in their tissues.
The US Geological Service has previously reported elevated levels of radioactivity in "flowback" water that naturally occurs in the rock.
In Britain the National Radiological Protection Board collected atmospheric dust samples, but said they showed no unusual levels of radioactivity.
Mr. Urban said a Government commission had been set up, with specialists from many ministries monitoring the levels of radioactivity.
State officials also said that only wastewater from shallow wells would be used, thereby reducing levels of radioactivity.
According to Sellafield, the levels of radioactivity discovered were very low and there was "no threat" to public health.
The accident released moderate levels of radioactivity into the underground air.
