Exploration no. 146047 is a Boring / probe (depth 7.3 feet) named: HB-101 described in subsurface document no. 64042. The document, a report titled Infiltration Memorandum - Chief Stealth Trail North Extension - Phase II was prepared by City of Seattle, Public Utilities, Geotechnical Engineering on 03-15-2010 for a Transportation - non-roadway project.