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stabilize or avoid soft creep areas. Designate setback zones where unstable features cann6~ <br /> be mitigated otherwise. FEIR pages 9-11 through 9-13. <br /> <br /> Finding: 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 detailed geotechnical investigation will disclose additional <br /> areas which may be susceptible to slope instability. Special techniques such as controlling <br /> water movement with ditches and through the orientation and location of cuts and fill <br /> design will improve slope stability. <br /> <br /> IMPACT 9C: Accelerated erosion could create unstable conditions, increase sediment in surface <br /> ranoff, and cause erosion gu_iHes. FEIR pages 9-13, 9-14. <br /> <br /> Miti_ntion Measures 9-1.9-10 through 9-!3. Provide an erosion control plan as pan of <br /> a detailed geotechnical investigation. The erosion control plan shall include measures to <br /> prevent erosion of existing drainageways and measures for revegetation of graded soil <br />· surfaces. Additional mitigations require erosion control before and during grading to <br /> control erosion. Temporary structures shall provide erosion control during storm runoff <br /> and permanent measures shall provide long-term ewsion control. Reduce areas of soil <br /> disturbance. FEIR page 9-14, 9-15. <br /> <br /> ~.aing: 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 FIR. <br /> <br /> Rationale for Finding: The erosion control plan will insure that erosion is minimized, <br /> through use of techniques to provide both short- and long-term erosion control. <br /> <br /> DIFFERENTIAL FILL SETTLEMENT <br /> <br /> IMPACT 9D: Filling on the site is proposed. This could result in significant settlement. <br /> Differential settlement could occur, causing damage to building foundations and utility conduits. <br /> FEIR pages 9-15. <br /> <br /> Mitigation Measures 9-1.9-14 through 9-17: Fill settlement shall be evaluated as pan of <br /> a detailed geotechnical investigation, with techniques used to minimize settlement risks for <br /> structures, roads and utilities. Monitor settlement of deep fills. FFJR pages 9-15, 9-16. <br /> <br /> F_iBaiag: 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 /> 14 <br /> <br /> <br />