OLS : Record


Main Title A tiered modeling approach for assessing the risks due to sources of hazardous air pollutants /
Author Guinnup, David E.
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, Technical Support Division,
Place Published Research Triangle Park, NC :
Year Published 1992
Report Number EPA-450/4-92-001
Stock Number PB92-164748
OCLC Number 28482115
Subjects Air pollution control; Computerized simulation; Risk assessment; Environmental health; Atmospheric diffusion; Air pollution effects(Humans); Ecology; Clean Air Act; Pollution sources; Hazardous materials; Toxicity; Malignant neoplasms; Air quality dispersion models; Toxic substances; Stationary sources; Mathematical models; Exposure
Subject Added Ent Air--Pollution--Mathematical models.; Health risk assessment--United States.
Internet Access
Description Access URL
Library   Call Number Additional Info Location Date Modified
ERBD PB92-164748 NERL/ESD-LV Library/Las Vegas,NV 02/09/2001
NTIS PB92-164748 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 vi, 43 pages ; 28 cm
Abstract The document provides modeling guidance to support risk assessments as applied to stationary sources of hazardous air pollutants. The guidance focuses on procedures which may be used in support of the petition processes described in Title III of the Clean Air Act Amendments of 1990. The analysis approach described herein is a tiered one, in which each subsequent modeling tier requires additional site-specific information to produce a less conservative estimate of the risk associated with a given stationary source (or group of sources). The modeling approach begins with Tier 1 screening tables which require only source emission rates, stack heights, and nearest fenceline distances to estimate maximum cancer and/or noncancer risks. Tier 2 utilizes additional source parameters (including stack diameter, exit gas temperature and velocity, and nearby building dimensions) with the SCREEN computer program to develop more refined estimates of maximum risks. Tier 3 utilizes site-specific meteorological data, plant layout information, and release frequency data with the TOXST and TOXLT computer models to provide additional refinement to these assessments.
Notes Distributed to depository libraries in microfiche. Shipping list no.: 93-0847-M. "March 1992." "EPA-450/4-92-001." Includes bibliographical references (p. 39-40). Microfiche.
Supplementary Notes See also PB91-190983.
Corporate Au Added Ent United States. Environmental Protection Agency. Office of Air Quality Planning and Standards. Technical Support Division.
PUB Date Free Form {1992}
NTIS Prices PC A03/MF A01
BIB Level m
Medium microform
OCLC Time Stamp 20010209171409
Cataloging Source OCLC/T
Language eng
SUDOCS Number EP 4.2:M 72/2
Origin OCLC
OCLC Rec Leader 01412cam 2200337Ia 45020