PMID: 15373363Sep 18, 2004Paper

An operational assessment of the application of the relative reduction factors in the demonstration of attainment of the 8-hr ozone National Ambient Air Quality Standard

Journal of the Air & Waste Management Association
G SistlaK Civerolo

Abstract

The U.S. Environmental Protection Agency in 1997 revised the 1-hr ozone (O3) National Ambient Air Quality Standard (NAAQS) to one based on an 8-hr average, resulting in potential nonattainment status for substantial portions of the eastern United States. The regulatory process provides for the development of a state implementation plan that includes a demonstration that the projected future O3 concentrations will be at or below the NAAQS based on photochemical modeling and analytical techniques. In this study, four photochemical modeling systems, based on two photochemical models, Community Model for Air Quality and the Comprehensive Air Quality Model with extensions, and two emissions processing models, Sparse Matrix Optimization Kernel for Emissions and Emissions Modeling System, were applied to the eastern United States, with emphasis on the northeastern Ozone Transport Region in terms of their response to oxides of nitrogen and volatile organic carbon-focused controls on the estimated design values. With the 8-hr O3 NAAQS set as a bright-line test, it was found that a given area could be termed as being in or out of attainment of the NAAQS depending upon the modeling system. This suggests the need to provide an estimate of ...Continue Reading

Citations

May 26, 2011·Journal of the Air & Waste Management Association·James H Smith
Mar 27, 2012·Journal of the Air & Waste Management Association·Andrew H PeguesRobyn S Wilson
Jul 14, 2012·Journal of the Air & Waste Management Association·Evan CouzoWilliam Vizuete
Oct 7, 2014·Journal of the Air & Waste Management Association·Daniel S Cohan, Ran Chen
Mar 22, 2011·Journal of the Air & Waste Management Association·William VizueteEvan Couzo
Dec 9, 2010·Environmental Science & Technology·Antara DigarJames W Boylan

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