January 29, 2010

MEMORANDUM

TO: 			Air Docket EPA-HQ-OAR-2005-0161

SUBJECT:	2005 Petroleum Baseline Lifecycle GHG Calculations

This memorandum accompanies a spreadsheet on the docket that includes
petroleum baseline lifecycle GHG emissions calculations.  This
spreadsheet contains five tabs.  The first and second tabs document the
well-to-tank, tailpipe, and well-to-wheels values for the gasoline
baseline and the diesel baseline used for the final rule.  The third and
fourth tabs contain the tailpipe values for ethanol and biodiesel used
for the final rule.  The fifth tab contains our estimate of land-use
change emissions from the conversion of Alberta forest for oil sands
production.

