GRA thanks the Vendor’s for their participation in the 1997 Annual Meeting and 21st Biennial Groundwater Conference Alex Nikolajevich Westbay Instruments, Inc. Unit 115 949 W. 3rd St. North Vancouver, BC CANADA V7P3P7 604-984-4215 Gary Corbell Welenco, Inc. 4817 District Blvd. Bakersfield CA 93313 805-834-8100 Andre Fiedler Colorado Silica Sand, Inc. P.O. Box 15615 Colorado Springs CO 80935 719-390-7969 Fred Ousey Enviro-Tech Services Company 1125-B Arnold Dr. #161 Martinez CA 94553 510-370-1541 Tim Foltz Solinst Canada Ltd. 35 Todd Rd. Georgetown ONT CANADA L794R8 Robert M. Shea Instrumentation Northwest, Inc. 4620 Northgate Blvd. #170 Sacramento CA 95834 916-922-2900 Frank Magdich RST Instruments Ltd. 200-2050 Hartley Ave. Coquitlam BC CANADA VSK 6W5 604-540-1100/1-800-665-5599 Anne OÕConnor Columbia Analytical Services 1317 S. 13th Ave. Kelso WA 98626 360-577-7222 Noah Heller Simul Probe Technologies, Inc. 150 Shoreline Hwy. Bldg. E Mill Valley CA 94941 Mike Stephens Tetra Tech Em, Inc. 10670 White Rock Rd., Suite 100 Rancho Cordova CA 95670 916-853-4509 Mark Jerpbak TEG 11350 Monier Park Place Rancho Cordova CA 95742 916-853-8010