SELECT PROJECTS
On-Call Hydraulics Engineering Support Services, San Francisco Bay Region, California
Six Rivers Geosciences is providing consultation, research, professional and technical support and services required for Hydrology and Water Quality Studies to the California Department of Transportation (Caltrans), District 4 Division of Design, Office of Hydraulic Engineering Program, on an "as-needed" basis. These services will assist Caltrans in the maintenance, development and construction of proposed Caltrans transportation facilities within the District.
On-Call Water Quality Support Services, San Francisco Bay Region, California
Six Rivers Geosciences is providing consultation, research, professional and technical support and services required for Water Quality Studies to the California Department of Transportation (Caltrans), District 4 Division of Environmental Water Quality Program, on an "as-needed" basis. These services will assist Caltrans in the maintenance, development and construction of proposed Caltrans transportation facilities within the District.
On-Call Geotechnical Engineering Services, Various Counties, California
Six Rivers Geosciences is providing Geological Engineering and Hydrogeology services to support the Caltrans Division of Engineering Services, Office of Geotechnical Services, on an "as-needed" basis. These services will assist Caltrans in the maintenance, development and construction of proposed Caltrans transportation facilities in Districts 7, 8, 11, and 12.
Landslide Risk Tool Development, San Francisco Bay Region, California
Six Rivers Geosciences provided geologic and hydrogeologic support to Pacific Gas and Electric Company (PG&E) in the development of an update to the seismically induced landslide model used by the System Earthquake Risk Assessment (SERA) risk tool used by PG&E to evaluate integrated seismic hazard across the PG&E asset portfolio. The focus of this study was on improving estimates of landslide deformation of existing landslides which can affect PG&E assets within the greater nine-county San Francisco Bay Area.
Liquefaction and Lateral Spread Study, San Francisco Bay Region, California
SMP Fissures Study, Sunol, California
Six Rivers Geosciences provided geologic and hydrogeologic support to Pacific Gas and Electric Company (PG&E) in the development of predictive liquefaction and lateral spread maps and algorithms to improve estimates of ground failure that can affect PG&E assets within the greater nine-county San Francisco Bay Area. This study is an element of the PG&E Geosciences Integrated Seismic Risk Management Program (ISRMP) and used to improve seismic risk assessment for the company Risk Assessment Mitigation Phase (RAMP), Enterprise risk register, and Line of Business (LOB) risk reduction activities.
Six Rivers Geosciences provided geologic and hydrogeologic support to Arup North America Ltd. (Arup) in relation to slope stability issues at the Sunol Valley Aggregate Quarry SMP-30 Site, which sits adjacent to San Francisco Public Utilities Commission (SFPUC) water transmission pipelines. The most immediate risk to the pipelines involves the progressive failure of active fissures resulting in ground failure extending to the pipelines and appurtenant structures.