Record Display for the EPA National Library Catalog

RECORD NUMBER: 599 OF 1744

OLS Field Name OLS Field Data
Main Title Example application of modeling toxic air pollutants in urban areas. /
Other Authors
Author Title of a Work
Touma, Joe.
Touma, Jawad S.
CORP Author Environmental Protection Agency, Washington, DC.
Publisher U.S. Environmental Protection Agency, Office of Air and Radiation, Office of Air Quality Planning and Standards,
Year Published 2002
Report Number EPA/454/R-02/003
Stock Number PB2002-108218
OCLC Number 52304719
Additional Subjects Air pollution models ; Hazardous air pollutants ; Urban areas ; Dispersions ; Toxic substances ; Texas ; Benzene ; Lead(Metal) ; Houston(Texas)
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=2001212Z.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB2002-108218 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 1 volume (ix, 91, 9 pages) : illustrations ; 28 cm
Abstract
Emissions for the Houston region were processed through EMS-HAP and annual average concentrations were calculated using the ISCST3 model. Emissions were processed with two methods: (1) all sources were modeled as 1 km grid cells, and (2) onroad mobile emissions were allocated to road segments. In method two, onroad mobile emissions not specifically allocated to road segments were modeled to 1 km grid cells. Other sources (major, area/other, and nonroad mobile) were modeled as in method one. After emission processing by EMS-HAP, sources were divided into rural and urban sources. ISCST3 was then run for each source type and concentrations added together at each receptor during postprocessing. ISCST3 was run for five pollutants: benzene, cadmium, chromium, formaldehyde, and lead. There were 711 receptors used in the model (700 census tract centroids and 11 monitors). For benzene and formaldehyde, ISCST3 was also run using the road segment emissions. Additionally, for benzene, ISCST3 was run in an area of high major/onroad emissions with receptors every 500m.
Notes
Project Officer: Joe Touma. Includes bibliographical references. "June 2002." Microfiche.