Exploration no. 145982 is a Geotechnical (depth 60 feet) named: B-2 described in subsurface document no. 64110. The document, a report titled Mercer Island Pipeline, Slope Inclinometer and Piezometer Installation and Monitoring was prepared by City of Seattle, Public Utilities, Geotechnical Engineering on 11-30-2007 for a Utility project.