UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2565 PLYMOUTH ROAD

ANN ARBOR, MICHIGAN 48105-2498

OFFICE OF

AIR AND RADIATION

                                                                        
          	     

MEMORANDUM

SUBJECT:	Emissions Modeling Data Files for the Final Renewable Fuel
Standard Rule 

		

FROM:	Margaret Zawacki

		Assessment and Standards Division, Office of Transportation and Air
Quality

		Marc Houyoux and Rich Mason

		Emissions Inventory and Analysis Group, Office of Air Quality Planning
and Standards

TO:		Docket EPA-HQ-OAR-2005-0161-DRAFT-3009

DATE:		January 13, 2010

The purpose of this memorandum is to transmit data files which were used
in the emissions modeling analyses for the final renewable fuel standard
rule.  The emissions modeling analyses are discussed in Section VI of
the preamble, Chapter 3 of the Regulatory Impact Analysis (RIA) and in
the Emissions Modeling Technical Support Document.  Following is a brief
description of the information contained on the enclosed DVDs.

County/SCC-level delimited summaries for criteria pollutants and (at
least) select hazardous air pollutants (benzene, acetaldehyde,
formaldehyde, acrolein, 1,3-butadiene, methanol, naphthalene) by
emissions modeling sector for the scenarios listed below.  Some
county-SCC summary files include emissions for all HAPs supported by the
multi-pollutant CMAQ model.  Onroad and nonroad mobile summaries are
included by month using average day emissions and separately with annual
totals.  For cases (1), (2), (3), and (5), point source inventories are

also provided in the format for the Sparse Matrix Operator Kernel
Emissions (SMOKE) modeling system.  The point "ORL" format of these
datasets can be found online at
http://www.smoke-model.org/version2.6/html/ch08s02s08.html#d0e43807.

1) 2005 base

2) 2022 AEO baseline

3) 2022 RFS1 baseline

4) 2022 RFS1 sensitivity with headspace profile speciation change
(8737B) - July 12-km EUS only

5) 2022 RFS2 control case

6) 2022 RFS2 sensitivity with missing cellulosic plants, nonroad
speciation & PFCs changes - Jan/April/July/Oct 12-km EUS only  

Attachments

