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 Summary Files for Tier 3 Motor Vehicle Emission and
Fuel Standards

		

FROM:	Margaret Zawacki

		Assessment and Standards Division, Office of Transportation and Air
Quality

		Alison Eyth and Alexis Zubrow

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

TO:		Docket EPA-HQ-OAR-2011-0135

DATE:		February 24, 2014

The purpose of this memorandum is to transmit emissions summary files
for the inventories used in the air quality modeling for the Tier 3
motor vehicle emissions and fuel standards.  The emissions modeling
analyses are discussed in the Emissions Inventory for Air Quality
Modeling Technical Support Document: Tier 3 Motor Vehicle Emission and
Fuel Standards.  Following is a brief description of the information
contained in the files.

The files contain county level delimited summaries for criteria
pollutants and select hazardous air pollutants (e.g. benzene,
acetaldehyde, formaldehyde, acrolein, 1,3-butadiene, ethanol,
naphthalene) by emissions modeling sector for the scenarios listed
below.  Summaries are included by month using average day emissions and
separately with annual totals for the following scenarios: 2007
baseline, 2018 reference case, 2018 control case, 2030 reference case,
and 2030 control case.  

The files are named “tier3_county_sector_report_23sep2013.xlsx” and
“tier3_onroad_month_report_20sep2013.xlsx”.

