UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2000 TRAVERWOOD DRIVE

ANN ARBOR, MI  48105-2498

									     OFFICE OF

									AIR AND RADIATION

July 28, 2016

MEMORANDUM

SUBJECT: Emissions Modeling Files for Glider Analysis

FROM: David Choi

	 Assessment and Standards Division, Office of Transportation and Air
Quality, US EPA

TO:  Greenhouse Gas Emissions Standards and Fuel Efficiency Standards
for Medium- and Heavy-Duty Engines and Vehicles - Phase 2 - Docket
EPA-HQ-OAR-2014-0827

The purpose of this memorandum is to docket the emissions modeling files
used to estimate the emissions impacts of gliders for the Final
Heavy-Duty GHG Phase 2 standards.  The analysis used the same version of
MOVES used to estimate the emissions impacts of the rules, described in
Section VII of the Preamble.  The MOVES codes and databases can be found
in a separate docket, “Runspecs Model Inputs MOVES Code and Database
for HD GHG Phase 2 FRM Emissions Modeling”.  Table 1 lists and
describes the files included in this docket.  

Table 1. Descriptions of the files in the docket

Files	Description

Runspecs_inputDBs_for_gliders.zip	

“Gliders_defallveh_CY2025_050616.mrs”

MOVES runspecs used to develop the NOx and PM2.5 emission rates for
tractors with glider controls in CY2025 and 2040

“Gliders_defallveh_CY2040_050616.mrs”

“Gliders_MY1998_NOxPM_CY2025_050716.mrs”

MOVES runspecs used to develop the NOx and PM2.5 emission rates for
tractors without glider controls in CY2025 and 2040, assuming gliders
emit at the level equivalent to the engines meeting the MY 1998-2001
standards

“Gliders_MY1998_NOxPM_CY2040_050716.mrs”

“Gliders_def_NOxPM_071816_CY2017.mrs” to
“Gliders_def_NOxPM_071816_CY2047.mrs”

MOVES runspecs used to develop the NOx and PM2.5 emission rates for
tractors with glider controls used to estimate the MY lifetime impacts,
assuming MY lifetime of 30 years

“Gliders_MY1998_NOxPM_071816_CY2017.mrs” to
“Gliders_MY1998_NOxPM_071816_CY2047.mrs”

MOVES runspecs used to develop the NOx and PM2.5 emission rates for
tractors without glider controls used to estimate the MY lifetime
impacts, assuming MY lifetime of 30 years

“20160217_hdghg2frm_alt1a_in”

The user databases specified in the runspecs

“gliderkit_erbat_in”

 

GliderImpacts.sas	SAS script used to process the MOVES outputs to
generate the NOx and PM2.5 rates and estimate the inventories for both
CY and MY lifetime analyses

GliderImpacts_051216.xlsb	Spreadsheet used to estimate the NOx and PM2.5
inventories for different scenarios in CY2025 and 2040, using the rates
generated from MOVES runs

Gliders - MY lifetime reductions NOx PM.xlsx	Spreadsheet summarizing the
estimated reductions of glider control for a MY2017 glider vehicle over
30 years



