Specifications include, but are not limited to: The Water Authority is in need of updating its pipeline system seismic vulnerability study that was originally completed in 1993. The vulnerability study also provided repair time estimates due to a seismic activity based on estimated repair rates to the pipelines. Since the 1993 study, several factors contributing to the results of the study have significantly changed or evolved, including the industry's current understanding of regional seismicity, seismic hazards, pipeline fragilities, and the Water Authority's pipeline materials and improvements. In addition, estimated locations of liquefaction and associated lateral spreading and seismic slope stability hazards along the pipelines now become available based on current accepted practices and methodologies. The Water Authority intends to update its previous study to reflect the advancement in earthquake science and engineering. Specifically, the consultant will be required to assess the entire Water Authority's pipeline system, inclusive of the north-south aligned First and Second Aqueduct and the all east-west aligned branches, and Metropolitan’s portion of the pipelines from the Skinner Water Treatment Plant to the Water Authority's delivery points (approximately seven miles south of the Riverside/San Diego County line) for their vulnerability to strong seismic events. The consultant shall determine possible pipeline failures, the repair rates, and repair time estimates associated with the consequences of such events. The consultant is expected to perform document reviews, data research, field geotechnical investigations, seismic hazard assessment, pipeline fragility evaluation, repair time estimates, recommendations, and draft and final reports.