Citation:

WEAVER, J. W., L. M. PRIETO, AND L. R. EXUM. GASOLINE COMPOSITION IN THE US (1976-2005). Presented at 15th Annual State Fund Administrators Conference, Oklahoma City, OK, June 11 - 14, 2006.

Impact/Purpose:

To assist decision-making by improving approaches to subsurface contaminant transport modeling based on evaluation of field observations and subsequent development of appropriate modeling approaches and tools.

Description:

Gasoline composition data are collected by EPA for Clean Air Act compliance requirements, by industry for various purposes and, recently, by EPA/ORD for a compositional study (Weaver et al., 2005, EPA/600/R-05/032, http://www.epa.gov/athens). Each of these data sets are potentially valuable for evaluation of potential environmental impacts from gasoline and impacts on remediation. This part of the study uses thirty years' of industry data from approximately 175 cities, and shows the trends in lead, vapor pressure, benzene, ethers and alcohols. Samples are collected and analyzed by a voluntary industry consortium, currently organized by Northop Grumman Corp in Bartlesville, Oklahoma (http://pps.ms.northropgrumman.com/default.htm). The interpretation of data from these studies requires an understanding of federal and state regulations on fuel composition. Multiple sources of information on these programs were used to develop reliable, up-to-date maps showing gasoline requirements imposed by various regulations. In addition to the insights provided by these comparison of data for cities under differing regulatory requirements, models of each city¿s composition are been developed. These will provide a means to estimate release composition given an estimated release data. This information is anticipated to be useful for site assessment and modeling of sites.

Record Details: