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Gis Modeling of Air Toxics Releases from Tri-Reporting and Non-Tri-Reporting Facilities : Impacts for Environmental Justice

By Dolinoy, Dana C.

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Book Id: WPLBN0000020792
Format Type: PDF eBook
File Size: 2.7 MB
Reproduction Date: 2005
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Title: Gis Modeling of Air Toxics Releases from Tri-Reporting and Non-Tri-Reporting Facilities : Impacts for Environmental Justice  
Author: Dolinoy, Dana C.
Volume:
Language: English
Subject: Government publications, United Nations., United Nations. Office for Disarmament Affairs
Collections: Government Library Collection, Disarmament Documents
Historic
Publication Date:
Publisher: United Nations- Office for Disarmament Affairs (Unoda)

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Dolinoy, D. C. (n.d.). Gis Modeling of Air Toxics Releases from Tri-Reporting and Non-Tri-Reporting Facilities : Impacts for Environmental Justice. Retrieved from http://hawaiilibrary.net/


Description
Government Reference Publication

Excerpt
Excerpt: The Toxics Release Inventory (TRI) requires facilities with 10 or more full-time employees that process > 25,000 pounds in aggregate or use > 10,000 pounds of any one TRI chemical to report releases annually. However, little is known about releases from non-TRI-reporting facilities, nor has attention been given to the very localized equity impacts associated with air toxics releases. Using geographic information systems and industrial source complex dispersion modeling, we developed methods for characterizing air releases from TRI-reporting as well as non-TRI-reporting facilities at four levels of geographic resolution. We characterized the spatial distribution and concentration of air releases from one representative industry in Durham County, North Carolina (USA). Inclusive modeling of all facilities rather than modeling of TRI sites alone significantly alters the magnitude and spatial distribution of modeled air concentrations. Modeling exposure receptors at more refined levels of geographic resolution reveals localized, neighborhood-level exposure hot spots that are not apparent at coarser geographic scales. Multivariate analysis indicates that inclusive facility modeling at fine levels of geographic resolution reveals exposure disparities by income and race. These new methods significantly enhance the ability to model air toxics, perform equity analysis, and clarify conflicts in the literature regarding environmental justice findings. This work has substantial implications for how to structure TRI reporting requirements, as well as methods and types of analysis that will successfully elucidate the spatial distribution of exposure potentials across geographic, income, and racial lines. Key words: air dispersion modeling, air toxics, environmental justice, geographic information systems (GIS), Toxics Release Inventory (TRI).

 

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