Exploration no. 28864 is a Test pit (depth 1.3 feet) named: 2 + 50 described in subsurface document no. 5359. The document, a report titled Soils Profile, NE 205th (30th NE to 33rd NE) was prepared by King County, Dept. of Transportation Materials Laboratory on 11-16-1965 for a Roadway project.