San Francisco Estuary Institute, 7770 Pardee Lane, Oakland, California 94621, Axys Analytical Services Ltd., 2045 Mills Road West, Sidney, British Columbia, Canada V8L 3S8, East Bay Municipal Utility District, P.O. Box 24055, Oakland, California 94623, Water Pollution Control Laboratory, California Department of Fish and Game, 2005 Nimbus Road, Rancho Cordova, California 95670, and Geochemical and Environmental Research Group, Texas A&M University, 833 Graham Road, College Station, Texas 77845(2004-12-03時点)