Underground Storage Tanks

Total Petroleum Hydrocarbon Criteria Working Group (TPHCWG)

The Working Group convened in 1993 to address the large disparity among cleanup requirements being used by states at sites contaminated with hydrocarbon materials such as fuels, lubricating oils, and crude oils. These requirements usually focus on total petroleum hydrocarbon (TPH), with numerical standards ranging from tens to tens of thousands of milligrams of TPH per kilogram of soil. The goal of the Working Group was to develop scientifically defensible information for establishing soil cleanup levels that are protective of human health at petroleum release sites. The Working Group produced five technical volumes of their efforts in data collection and analysis. The series is available from the Association for the Environmental Health of Soils (AEHS). More information on ordering hard copies of these books, and downloading PDF versions, is available at the AEHS web site: http://www.aehs.com/publications/catalog/tph.htm

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