I-805/5 Conversion to Express Lanes

Drill 9 borings each to a depth of 40 feet. Most borings will be drilled within paved shoulders of Caltrans I-805 medians. Boring A-26-006 will be drilled within paved city street/RoW. All borings will be completed using 8-inch diameter augers and backfilled per State and County requirements. If groundwater is encountered, rotary wash drilling will be used to complete borings. Soil spoils at paved locations will be drummed and hauled off-site for disposal. All borings will be backfilled accordin...