Precipitation samples are collected at
two locations on the Idaho National Laboratory (INL): the Central Facilities Area (CFA) and the
Experimental Field Station (EFS). Precipitation from Idaho
Falls, a location distant from the site, is sampled to serve as a
control or background sample. The EFS location is sampled
weekly. Idaho Falls and CFA locations are collected
monthly.
The Idaho Falls station is operated
as part of the Environmental Protection Agency (EPA) Environmental
Radiation Ambient Monitoring System (ERAMS) program.
Precipitation samples are used as a
means of detecting airborne tritium.
