Title: Health physics environmental monitoring semiannual report, January--June 1962

Soil, vegetation, air, and water are routinely sampled up to a distance of 10 miles from Atomics International property. Data gathered during the period January 1, 1962 to June 30, 1962 have been summarized and compared with previous data. During this period, a general increase was observed in environmental radioactivity levels. This increase is attributed to nuclear weapons tests and not to atomics International operations. The effect of nuclear weapons tests is readily shown in the air sample data. A general description of the environmental monitoring program and procedures is included. (auth)