OLS : Record


Main Title Air quality modeling technical support document : 2017-2025 light-duty vehicle greenhouse gas emission standards final rule.
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
Publisher U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Air Quality Assessment Division,
Place Published Research Triangle Park, N.C.
Year Published 2012
Report Number EPA-454-R-12-004
Stock Number PB2012-114331
OCLC Number 820153341
Subjects Air quality standards; Motor vehicles; Greenhouse gases; Emission; Modeling; Air pollution control; Nitrogen; Sulfur; Ethanol; Particulates; Ozone; Air toxics; Fuel economy; Benefits; Standards; Regulations; Documents
Subject Added Ent Automobiles--Motors--Exhaust gas--Standards--United States.; Air quality--Standards--United States.; Air quality--United States--Computer simulation.
Internet Access
Description Access URL
Local Library Info
Library Local Subject Local Note
EKB Black and white copy.
Library   Call Number Additional Info Location Date Modified
EKBD EPA-454/R-12-004 Research Triangle Park Library/RTP, NC 12/10/2012
NTIS PB2012-114331 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 02/21/2013
Collation 1 v. (various pagings) : col. ill., charts, maps ; 28 cm.
Abstract This document describes the air quality modeling performed by EPA in support of the 2017-2025 Light-Duty Vehicle Greenhouse Gas Final Rule (hereafter referred to as LD GHG). A national scale air quality modeling analysis was performed to estimate the impact of the vehicle standards on future year: annual and 24-hour PM2.5 concentrations, daily maximum 8-hour ozone concentrations, annual nitrogen and sulfur deposition levels, and select annual and seasonal air toxic concentrations (formaldehyde, acetaldehyde, benzene, 1,3-butadiene and acrolein) as well as visibility impairment. To model the air quality benefits of this rule we used the Community Multiscale Air Quality (CMAQ) model. CMAQ simulates the numerous physical and chemical processes involved in the formation, transport, and destruction of ozone, particulate matter and air toxics. In addition to the CMAQ model, the modeling platform includes the emissions, meteorology, and initial and boundary condition data which are inputs to this model. Emissions and air quality modeling decisions are made early in the analytical process to allow for sufficient time required to conduct emissions and air quality modeling. For this reason, it is important to note that the inventories used in the air quality modeling and the benefits modeling, which are presented in Section 6.2 and 6.3, respectively of the RIA, are slightly different than the final vehicle standard inventories presented in Chapter 4 of the RIA. However, the air quality inventories and the final rule inventories are generally consistent, so the air quality modeling adequately reflects the effects of the rule.
Notes Project Officer: Sharon Phillips. "August 2012." "EPA-454/R-12-004."
Availability Notes Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA.
Access Notes Also available via World Wide Web.
Corporate Au Added Ent United States. Environmental Protection Agency. Air Quality Assessment Division.
PUB Date Free Form Aug 2012
Category Codes 68A; 85H
NTIS Prices PC A09
BIB Level m
Control Number 129603850
OCLC Time Stamp 20121204100853
Cataloging Source OCLC/T
Language eng
Origin OCLC
OCLC Rec Leader 01388nam 2200325Ka 45020