He's pretty much of a straight-shooter -- in comparison to many around there. (He's not the sharpest knife in the drawer, though.)
The part of the site evacuated is shown below and labeled "200 W area" ...
The whole Hanford Site covers hundreds of square miles. (560 to be more accurate.)
The 200 Area of Hanford is where fuel irradiated in the old production reactors was chemically processed. The area is divided into two separate areas, 200 East and 200 West. 200 West, located approximately 8 miles from the Columbia River and 25 miles from Richland, covers approximately five square miles and contains three processing plants, one of which operates as the site's decontamination facility. It has not conducted plutonium processing since 1956.
http://www.king5.com/topstories/stories/NW_082405WABhanfordevacsLJ.a6451b64.html