Precipitation samples are
collected at one location on the Idaho National Laboratory
(INL) Site: the
Experimental Field Station (EFS). Precipitation is collected from offsite locations at Atomic City, Howe and Idaho Falls. Idaho Falls samples are collected
monthly. Atomic City, EFS and Howe locations are observed weekly and sampled when there is sufficient volume (125 ml) for analysis.
The Idaho Falls station is operated as part of the
Environmental Protection Agency (EPA) Environmental
Radiation Ambient Monitoring System (RadNet) program.
Precipitation samples are used as a means of detecting
airborne tritium. The current locations were selected to correspond with atmospheric moisture locations for comparison of tritium results.
The objectives of ESER's Offsite
Environmental Surveillance Program are:
Sample media representing pathways of contaminants from the INL to
people near the site
Obtain radiological analyses for
Report and interpret the results
of these analyses for the public.