Caldecott Tunnel
Orinda, CA || Contract Value: $29M || Owner: California Department of Transportation || General Contractor: Tutor || Scopes: Soil Nail Walls, Tiebacks, Tunnel, Secant Piles, Sound Wall, Horizontal Drains, CIDH, Soldier Piles
mining and tunneling projects
Re-Wetting of Muggins Gulch
Larimer County, CO || Contract Value: $3.4M || Owner: Colorado Department of Transportation || General Contractor: Flatiron || Scopes: Tunnel, Soil Nail Shoring, Slope Rockfall Protection
Stillwater East Boulder Mine
Contract Value: $67.8M || Owner: Sibanye Stillwater || General Contractor: Drill Tech Drilling & Shoring, Inc. || Scopes: Tunnel Rehabilitation, Shafts, Mine Ground Support
Calaveras Dam
Sunol, CA || Contract Value: $15.5M || Owner: San Francisco Public Utilities Commission || General Contractor: Flatiron || Scopes: Soil Nail Walls, Rock Bolts, Tieback Walls, CSM/DSM, Tunnels, Shaft, Compensation Grouting
Two-Mile Bar Tunnel
Jamestown, CA || Contract Value: $16.5M || Owner: Oakdale Irrigation District || General Contractor: Drill Tech Drilling & Shoring, Inc. || Scopes: Tunnel, Diversion Structures
FCWA Occoquan River Crossing Tunnel
Lorton, VA || Contract Value: $5.9M || Owner: Fairfax County Water Authority || General Contractor: Garney Companies, Inc. || Scopes: Tunnel, Shafts