b(a)p factors for crematory

["Wu, Chun Yi" <Chun.Yi.Wu@state.mn.us>]

The FIRE emission factor for b(a)p under SCC 31502101 is < 2.91 E-8
lb/Body burned.  According to the assumption, each body weights 150 lb.
If we use 2.91 E-8/Body, the b(a)p emission factor is 3.88E-7 lb/ton.
However, the PAH,7 and PAH,16 emission factors in NEI are 1.03E-9 lb/ton
and 9.63E-4 lb/ton, respectively.  

There are also emission factors for other individual PAHs.  Many of them
are in less than format. 

If we really want to use the less than factors in FIRE for b(a)p, we
might need to use all emission factors for other individual PAHs and
take off emissions for PAH,7 and PAH,16.  Doing so, we will have about 3
orders of magnitude higher than NEI estimates for PAH,7.  Do we want to
go for it?  My opinion is "do not use FIRE factors."

Chun Yi 


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