Excavation contractors in Alameda County, CA

The Gulf Coast flatwoods and deltaic corridor are defined by low relief, slow surface runoff, and high groundwater tables that often sit within 1 to 3 feet of the surface. Subgrade soils consist of heavy, fat clays (Lake Charles and Beaumont series) with severe shrink-swell characteristics and low unconfined compressive strength. Detention pond excavation, mass drainage ditching, and pump stations represent a huge portion of site earthwork. Saturated ground conditions require the use of wide low-ground-pressure (LGP) tracks and timber crane mats to prevent sinkage. Trenching for deep utilities requires continuous sheet piling or trench shoring combined with well-point dewatering to manage high hydraulic inflow and sand boiling.