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Accordingly, the project, as conditioned, is compatible with previously developed <br /> properties in the vicinity and adjacent proposed projects, and the natural, <br /> topographic features of the site. <br /> 4. Does grading take into account environmental characteristics and is it <br /> designed in keeping with the best engineering practices to avoid <br /> erosion, slides, or flooding to have as minimal an effect upon the <br /> environment as possible? <br /> The natural topography of the site is relatively flat. Minimal changes in grades <br /> are proposed, with the exception of the filling of an existing drainage swale by the <br /> western boundary and the construction of a berm by the 1-580. The site is not <br /> located within an Alquist-Priolo Earthquake Fault Zone. Slides are not <br /> anticipated. <br /> The proposed project will require the construction of stormwater detention <br /> facilities to contain the 100 year flood. An EIR mitigation measure for the project <br /> requires the site to be removed from the flood hazard area prior to occupancy. <br /> Engineering modeling indicates that implementation of the Livermore flood <br /> protection improvements, as part of Livermore's approved El Charro Specific <br /> Plan, will provide sufficient detention to prevent inundation of the Staples Ranch <br /> site for the 100 year storm event. It is anticipated that Livermore will begin the <br /> construction of these improvements this year. <br /> To help prevent the erosion and pollution of the Arroyo Mocho, on-site <br /> stormwater will be treated on site for contaminates and directed into the <br /> stormwater flow control basin on the Staples Ranch Neighborhood Park, before <br /> being released into the Arroyo Mocho. <br /> On-site erosion control and dust suppression measures will be documented in <br /> the improvement plans and inspected by the Building and Safety Division during <br /> construction. <br /> Accordingly, the grading, as conditioned, takes into account environmental <br /> characteristics and is designed in keeping with the best engineering practices to <br /> avoid erosion, slides, or flooding to have as minimal an effect upon the <br /> environment as possible. <br /> PUD Findings—PUD-68 <br /> Page 3 of 5 <br />