Coverup in regards to the Japanese plant meltdown?

While officials are insisting that everything is fine information is starting to leak out indicating that parts of California are starting to see higher radiation levels:

[1:39 p.m. ET Friday, 2:39 a.m. Saturday in Tokyo] Monitors in Sacramento, California, have detected a small amount of radioactive material from the earthquake-struck nuclear power plant in Japan, an official with the Comprehensive Test Ban Treaty Organization said. The exact amounts were not available, but were far less than what would be considered harmful to human health, the official said.