Hi group, On yesterday's call, Jon Bates mentioned that the EPA's Locating and Estimating (L&E) document for POM has a b(a)p factor for uncontrolled FCCUs (SCC=30600201) that is much lower that what is in FIRE. It appears that he is correct. Attached is the page from the L&E POM document (http://www.epa.gov/ttn/chief/le/pompta.pdf) that has the PAH factors for FCCUs. The uncontrolled factor, 3.7E-07 lb/barrel is about 1000x lower than the factor in WebFIRE, 0.48 lb/1000barrels. The controlled factor for b(a)p on this table is similar in magnitude to that in FIRE (2.4E-8 vs. 3.11E-8). There are 4 states (IN, MI, OH and PA) that have FCCU emissions for b(a)p, each totaling hundreds to tens of thousands of pounds. If each of these states could look up in their system or check with these facilities to determine what emission factor has been used and to confirm the presence or absence of control technology, that would be great. If the sources are uncontrolled and you are using the emission factor from FIRE, you may want to consider switching to the L&E factor. Jon ______________________ Jon Dettling Great Lakes Commission 734-971-9135 dettling@glc.org
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FCCU_L&Efactors.pdf
Description: Adobe PDF document