Review of 1990 Mobile-Source Emissions Modeling Procedure for the Dallas-Fort211 Worth Nonattainment Area

摘要

The Dallas-Fort Worth (D-FW) metropolitan area in Texas includes all of Collin,211u001eDallas, Denton, Rockwall, and Tarrant Counties and portions of Ellis, Johnson, 211u001eKaufman, and Parker Counties. The North Central Texas Council of Governments 211u001e(NCTCOG), the metropolitan planning organization (MPO) for D-FW, is responsible 211u001efor developing and maintaining the mobile-source emissions inventories in the 211u001earea. Within the D-FW planning area, the counties of Collin, Dallas, Denton, and 211u001eTarrant are designated as serious ozone nonattainment areas by the U.S. 211u001eEnvironmental Protection Agency (EPA). The NCTCOG models mobile-source emissions 211u001efor these counties using EPA's MOBILE5 Emission Factor model. Emission factors 211u001eare generated for carbon monoxide (CO), nitrogen oxides (NOx), and for volatile 211u001eorganic compounds (VOCs). The rest of this report discusses the NCTCOG emissions 211u001emodeling process in detail and is structured as follows: Section 1 identifies the 211u001esteps involved in computing pollutant-specific emission factors using the MOBILE5 211u001emodel. Section 2 then discusses the steps followed to apply the emission factors 211u001egenerated from the MOBILE5 model to compute the net emissions for the D-FW 211u001enonattainment area.