Exploration no. 103140 is a Geotechnical (depth 16 feet) named: B-4 described in subsurface document no. 35140. The document, a report titled Geotechnical Report, Division St Pavement and Sanitary Sewer by Converse Consultants NW, May 28 1993; J No. 93-35115-01 was prepared by Converse Consultants NW on 04-09-1993 for a Roadway project.