Sigma Prime Geosciences, Inc., is a geologic and civil engineering consulting firm. Based in Half Moon Bay, California, Sigma Prime is dedicated to meeting its clients needs in a timely, effective manner.

forensic engineering We provide litigation work and expert testimony in projects involving geotechnical failures such as foundation distress, slope instability, drainage problems and construction defects.

general geotechnical services We perform subsurface and laboratory studies for a wide range of structures, including buildings, tunnels, and dams.

surveying State-of-the-art equipment helps us generate accurate site maps.

slope stability We assess slopes, levees, embankment dams and engineered slopes as well as analyze and design repair of existing landslides.

fault studies and geologic mapping Evaluation of location and level of seismicity of faults and mapping of geologic features pertinent to individual projects.

liquefaction analyses We perform field studies and quantitative analyses to assess the potential for liquefaction at existing or proposed construction sites.