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u The following mitigation measures will mitigate these impacts to below a level of significance. Mitigation Measures (Impact F.1): (a) The Wetland Mitigation and Monitoring Plan for the Austin Road Landfill Expansion (Jones and Stokes, 1996) will be implemented as part of the proposed project, consistent with the terms and conditions of the Section 404 Permit issued by the U.S.`Army Corps.of Engineers. The plan and permit post-date preparation of the 1994 EIR The plan provides for a i • realigning 7,600 linear feet of the North Branch of the South Fork of Little Johns Creek, between the northeastern and southwestern project boundaries, with a new 7,800 foot long channel along the northern and western project boundaries; • creation of approximately 7.0 acres of watercourse that is allowed to freely meander within a 200 foot wide floodplain; t • Planting of 39.4 acres of riparian habitat; • Monitoring and maintenance for five years following construction. (b)In addition, a 4.3-acre detention basin will be constructed in the southwest corner of the project site, as depicted on project plans(R.W. Beck and Associates, 1993). ,j Facts in Supp art of the Finding: The potential for impacts from filling of creek and wetlands is discussed in Section HIT of the EIR. The wetland mitigation plan and restoration measures for the riparian area are designed to mitigate the impacts of the project on the North Branch of the South Fork of Little Johns Creek and its wetland areas. b.Removal of Valley Oaks Potential Significant Impact(F.2): Implementation of the proposed project could remove up to thirty-two valley oaks, averaging g approximately thirty inches dbh. Finding: Based upon the analysis in the EIR,project plans to retain and protect during construction 31.of the 32 valley oaks,along with replacement of the remaining oak,will make impacts on valley oaks less than significant. 25