                                       

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 Final Heavy Duty GHG Phase 2 Standards
		
FROM:	Margaret Zawacki
		Assessment and Standards Division, Office of Transportation and Air Quality

		Alison Eyth and Jeff Vukovich
     		Emissions Inventory and Analysis Group, Office of Air Quality Planning and Standards

TO:		Docket EPA-HQ-OAR-2014-0827

DATE:		July 19, 2016



The purpose of this memorandum is to transmit emissions summary files for the inventories used in the air quality modeling for the Final Heavy Duty GHG Phase 2 standards.  The emissions modeling analyses are discussed in the Emissions Inventory for Air Quality Modeling Technical Support Document: Final Heavy Duty GHG Phase 2 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: 2011 baseline, 2040 reference case, and 2040 control case.  

The files are named "2011ei_2040ei_ref_ctl_county_sector_report.xlsx" and "2011ei_2040ei_ref_ctl_onroad_county_extended_idle_report.xlsx".

