1. U.S. Geological Survey; Organic Geochemistry Research Lab.; 4821 Quail Crest Place Lawrence KS 66049
2. Univ. of Missouri-Rolla; Dep. of Civil, Architectural, and Environmental Engineering; 1870 Miner Circle Dr. Rolla MO 65401
3. U.S. Environmental Protection Agency-Region 7; P.O. Box 17-2141 Kansas City KS 66117