Exploration no. 117724 is a Geotechnical (depth 44.8 feet) named: FR-01-00 described in subsurface document no. 48065. The document, a report titled Geotechnical Report, SR-18 Maple Valley to Issaquah / Hobart Rd SE 215th Crossing of Taylor Creek was prepared by WA State Dept. of Transportation on 12-24-2001 for a Bridge project.