BVR was subcontracted by D.A. Collins Company to provide and install multiple rows of grouted hollow bar soil nails, 25 feet to 30 feet in length. Soil nail installation was followed by reinforcing steel placement and shotcrete placed at the excavate face to construct a passive soil nail wall. Prior to construction, BVR worked with the owner, GC, and engineer of record to propose the most economical soil nail installation methods. BVR utilized a new hydraulic drifter drill motor to install the grouted hollow bar nails.