Technical basis for 100 cm^2

[LASHLEYT@detroitedison.com]

To the best of my knowledge, I think the technical basis for using 100 cm^2 
when surveying for loose contamination comes from Naval Nuclear Power, during 
the "Rickover Days", and is based on the following: 
 
	(1) Smears tend to disintegrate when surveying areas greater than 100 
cm^2. 		(the original smears were paper chemistry filters) 
 
	(2) 100 is a convenient number to use when performing calculations in 
your head. 
		(RadCon Math) 
 
	(3) 100 cm^2 is approximately the area of clothing that would be 
contaminated if 		a individual brushed against a contaminated 
surface. 
 
I hope this info can help.