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2.0 ENVIRONMENTAL CHECKLIST could undergo violent to very violent ground shaking in the event of an earthquake (ABAG, 2004a). Soil disturbance as a result of Project construction can be controlled by standard erosion-control techniques to prevent pollution of surface waters. DISCUSSION a) The Project would not expose people to substantial adverse risks of loss, injury, or death since the Project does not include construction of habitable structures. The site is not within an Alquist- Priolo "Earthquake Fault Zone" for fault rupture hazard, and the potential for fault rupture to damage the pipeline and associated facilities is considered low. Portions of the pipeline alignments are in an area that is partly reclaimed tidal baylands and therefore the Project site is classified as having a high to very high liquefaction potential; however, the pipelines and water disinfection and filtration plant will be partially sited in a raised levee, reducing the liquefaction potential. In addition, adherence to generally accepted construction practices would reduce the impact of liquefaction hazards to less than significant. Landslide potential is considered low due to the flat terrain at the Project site. Extreme earth movement could impact the integrity of the Project as the result of pipeline rupture. Because the pipelines are within a previously graded, engineered, and developed area, potential for ground failure is considered to be low. b) Construction activities involving soil disturbance, such as excavation, stockpiling, and grading could result in increased erosion and sedimentation to surface waters. Substantial erosion is considered unlikely because of the relatively small scale of earthmoving activities necessary for Project implementation. Implementation of standard engineering erosion-control techniques (see Measure WQ-1, in Section VIII, Hydrology and Water Quality) would reduce potential impact to water quality to ales-than-significant level. c) The pipeline alignment and associated facilities are in an area that would experience violent to very violent shaking in the event of a major earthquake along the Hayward fault. With proper engineering, the construction and operation of the Project is not expected to result in any significant adverse short- or long-term impacts related to geology, soils or seismicity. d) The Project is not located in expansive soils as defined by the Uniform Building Code (UBC). e) No septic tanks are proposed for the Project; therefore, no impacts are anticipated. MITIGATION MEASURE Implement Measure WQ-1 (in Section VIII, Hydrology and Water Quality) San reaodro kuycled Water Project 2-24 ESA /?A3193 Draft 1S/ivIND