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Miti_~atiorf Measures 9-1.9-23 and 9-24: Provide a detailed drainage plan and ranoff <br /> calculations. Design drainage plan to prevent any increase in offsite peak flows. F~'rR <br /> page 9-19. <br /> <br /> ~: Changes or alterations have been requirext in, or incorporated into the project <br /> that avoid or substantially lessen the significant effect identified in the Final EIR. <br /> <br /> Rationale for Finding: The requirement for no net incr~a.~ in ranoff will avoid porehie <br /> offsite flooding and drainage impacts, sinc~ no additional water will leave the sit~during <br /> peak hours. <br /> <br />IMPACT 9H: Any irabalance in cut and fill could cream excessive truck traffic to haul dirt <br />offsite. <br /> <br /> Mi~i_~afion Measure 9-25: Require balance of cut and fill, or reduce any offsite hauling to <br /> a nominal level. <br /> <br /> Eil]aillg: Changes or alterations have been required in, or incorporated into the project that <br /> avoid or Substantially lessen the' significant effect identified in the EIR. <br /> <br /> Rationale for Finding. The requirement for balanced cut and fill will minimize the <br /> potential need for offsite hauling. <br /> <br />GROUND WATER <br /> <br />IMPACT 9I: Shallow groundwater may be present on the site. Grading could affect groundwater <br />flow. Landscape irrigation could adversely affect groundwater. FEIR pages 9-20, 9-21. <br /> <br /> Mitigation Measures 9-1.9-26 through 9-29: Identify all areas exhibiting shallow ground' <br /> wate~ conditions, and recommend actions for shallow groundwater effects. Evaluate <br /> surface drainage in relation to groundwater. Subdrains shall be installed according to the <br /> standards in the FEIR. Irrigation guidelines shall be provided to project homeowners. <br /> FEIR page 9-21. <br /> <br /> ~: Changes or alterations have been required in, or incorporated into the project <br /> that avoid or substantially lessen the significant effect identified in the Final EIR. <br /> <br /> Rationale for Finding: The geotechnieal investigation will identify potential ground water <br /> problems, and development will proceed only in accordance with strict standards. <br /> Necessary suMrains will be installed and imgation guidelines will be given to project <br /> residents to ensure that irrigation will not adversely affect ground water. <br /> <br /> 16 <br /> <br /> <br />