[R] Exponential Fits to Distribution Tails

[Clint Bowman]

EPA has suggested an exponential fit to the upper 10 percent of a PM10
distribution and using that fit to determine a once per year frequency of
occurrence.  My question is one of pedigree -- does such a technique have 
merit and status in the statistics community?  Or is there a better 
technique for determining the PM10 value that is expected to occur once 
per year?

TIA

Clint

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Clint Bowman			INTERNET:	clint at ecy.wa.gov
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