Exploration no. 117685 is a Geotechnical (depth 70 feet) named: CR-13-02 described in subsurface document no. 48061. The document, a report titled Supplimental Geotechnical Reccomendations, SR-18 Maple Valley to Issaquah / Hobart Rd Cedar River Bridges was prepared by WA State Dept. of Transportation on 04-03-2003 for a Bridge project.