outdoor air sampling questions

[D_S_Steve_Gunnink@RL.gov]

Radsafers,

We are a Department of Energy (DOE) contractor at the Hanford Site in Washington
state.  Our team is trying to upgrade the training on outdoor radiological air 
sampling.  Could you please help us find information on outdoor air sampling 
programs (for radio nuclides).  I'm interested in emergency response sampling 
such as plume tracking, command center habitability monitoring (outdoors, as in 
the case of a transportation accident), general area sampling, breathing air
sampling and resuspension sampling.  How are the samplers powered?  What 
samplers are used, and what flow rate capabilities are needed.  Has anyone 
developed lab exercises to demonstrate these aspects of air sampling?  Are there
any guidelines or training programs that teach techniques for normal sampling 
during outdoor maintenance and repair work on contaminated equipment or systems.
Is air sampling outdoors meaningful at low flow rates (2-4cfm) for short periods
of time (30-40 minutes) if you need to quantitatively evaluate results and use 
them for protective recommendations? 

Thank you in advance for your help.

Please direct all responses to d_s_gunnink@rl.gov 

                    or     brian_l_killand@rl.gov

PS - What isotopes decay by double Beta decay (page 19, 14th Ed., Chart of the 
     Nuclides, GE)