February 6, 2007

MEMORANDUM

FROM:  	Richard Cook

	   	Assessment and Standards Division

TO:	 	 Docket EPA-HQ-OAR-2005-0036

SUBJECT:	Cost Effectiveness Inventories for Final Mobile Source Air
Toxics Rule

The purpose of this memorandum is to transmit summary Excel data files
containing national and state level inventories for mobile source air
toxics used in cost effectiveness analyses for the final mobile source
air toxics rule.  These inventories are discussed in Section IV of the
preamble and 2.2.2 of the Regulatory Impact Analysis.  The summary files
are as follows:

onroad_rfs_0927.xls  -- onroad sources, reference and control cases ,
1999, 2010, 2015, 2020, 2030

nonroad_rfs_1019.xls – nonroad sources, reference and control case,
1999, 2010, 2015, 2020, 2030

pfc_summaries.xls – portable fuel containers, reference and control
cases, 1999, 2010, 2015, 2020, 2030

gas_distribution.xls – gasoline distribution, reference and control
case, 1999, 2010, 2015, 2020

The inventories for onroad sources, reference and control case, were
obtained from National Mobile Inventory Model (NMIM) output files. 
Nonroad inventories for the reference case were also obtained from NMIM
output files.  These output files are available in the docket under the
following docket ID numbers:

EPA-HQ-OAR-2005-0036-1048(0)

EPA-HQ-OAR-2005-0036-1048(1)

EPA-HQ-OAR-2005-0036-1048(2)

EPA-HQ-OAR-2005-0036-1048(3)

EPA-HQ-OAR-2005-0036-1048(4)

EPA-HQ-OAR-2005-0036-1048(5)

DVDs with detailed, county level inventories for nonroad sources with
fuel benzene control, portable fuel containers, and gasoline
distribution are being prepared and will be added to the docket as soon
as possible.

