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Earthwork & Grading
"Moving Mountains"
GBI defines earthwork as moving dirt quickly and effectively, and with a plan. Having multiple pieces of equipment moving on the same jobsite can be overwhelming but, with the coordination of our experienced project management teams and field staff, GBI consistently performs at a level that exceeds our clients’ expectations.
Ever since purchasing the first hydraulic bulldozer in Marin County in 1955 and the first mammoth D11 Bulldozer in Northern California in 1987, GBI has led the industry in site work operations. Our heavy equipment division now boasts over 200 pieces of modern earth moving machines, including scrapers, dozers, compactors, motor graders, and excavators.
GBI’s large inventory of well-maintained equipment ensures that our projects are equipped properly for every job. By utilizing the latest GPS [link to Technology page] and Topcon technology in our lead and finishing equipment, GBI accelerates the movement of dirt in an expert and precise manner.
Equipment, staffing and technology all contribute to GBI’s success in earthwork, but knowledge of and the ability to perform earthwork proficiently are at the cornerstone of our reputation. Site balancing, soil remediation and cost reduction incentives are all common concerns for our clients. Today's competitive market requires an intricate knowledge of earthwork technology. Utilizing these techniques, GBI is able to accomplish what our competitors can only attempt to do: move earth efficiently without error or double handling. GBI minimizes clients’ costs by providing design/build services and value engineering. Specializing in commercial sites, subdivisions, and infrastructure, GBI’s expertise in dealing with difficult soil conditions and complex projects has our clients calling us their earthwork contractor of choice.
GBI is committed to our work and to our customers. We take pride in the long-term associations shared with our clients. Our mission is to help our customers benefit from our high quality standards, and from our knowledge of mass site development and excavation services.
GBI provides a variety of earthwork and environmental services:
- Mass Excavation
- Building Excavation
- Earth retention systems
- Demolition
- Site Clearing
- Site grading and development
- Environmental site remediation
- Landfill construction and closure
- Bulk Material Handling
- Trucking
- Erosion control/stabilization

Signature projects completed include:
- Waldo Grade Slide Removal
- San Francisco Zoo Soundwall Protection
- Pacifica Sea Wall Construction
- Stinson Beach Shoreline Protection
- Forsythe Creek
- Northgate (Vallejo)
- Vintage Oaks
- West Contra Costa Landfill
- Crissy Field
- Potrero Hills Landfill (Cells 15 & 16)
- Ferrari Carano
- Jenner Slide Repair
- Oak Springs Slide Repair
- Highway 121 Slide Removal
- Woodview Estates
