1. The Groundwater Supply Survey
2. National Research CouncilAlternatives forGroundwaterCleanup; National Academy Press: Washington, DC, 1994.
3. National Archives and Records Administration40CFR141.61MaximumContaminant Levels for Organic Contaminants, (revised July 1, 2000) [Online] Available: http://www.access.gpo.gov/nara/cfr/waisidx_99/40cfr141_99.html[November, 2002].