[for cleanup it is currently being assumed that IMP = soil (1:1)]
Correcting for brush does not necessarily correct for the difference
Church:
Remeasured islands show higher IMP readings (more realistic)
IMPS are consistent
Are using corrected values for clean-up decisions.
What is the standard calibration frequency?
Healy requested a report on methods of calibration -
Am-241 source placed in an area to determine angular response
EG&G did theoretical calibration
Concerned if there is no ground flat source calibration
For calibration:
should move point source around and use absorbers