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<br />Facts in SUDDOrt ofFindini: The following facts demonstrate that it is not feasible to <br />mitigate the impact to a less than significant level. <br /> <br />a. Open space areas of the knoll on the eastern parcel will experience noise <br />levels ranging from 55 to over 7Odb. The top of the knoll overlooking the freeway <br />experiences the highest noise levels. The park uses will be located on areas of the knoll <br />screened from high noise levels and consistent with General Plan standards for such uses. <br /> <br />b. The knol1 acts as a noise shield for uses located to the east. <br /> <br />c. It is not feasible to construct a soundwall between 1-680 and the knoll to <br />screen the high portions of the knoll overlooking the freeway because the extraordinary <br />height of such a soundwall would cause significant adverse visual impacts, would block <br />views of the knoU from the freeway, and would be unnecessary because noise sensitive <br />recreation uses will be located in quieter locations on the eastern side of the knoll. <br /> <br />d. AI1 the development alternatives propose open space/park on the East <br />Parcel and would be subject to the same noise impacts. The No Project Alternative is <br />rejected because it would not meet any of the Project Sponsor's objectives nor would it <br />fulfiU any of the City's objectives for this site, including provision of additional housing, <br />open space and public improvements. <br /> <br />E. VISUAL RESOURCES <br /> <br />1. ImDact N I. Project development, including barriers to mitigate freeway-related <br />noise, would reduce visibility into and beyond the site and diminish the "green vista" <br />currently available from 1-680 northbound and southbound through the site. (Cooperative <br />Plan, Preferred Plan, and Alternative 2) <br /> <br />MitilZation Measures: <br />Measure Nla Avoid placement of opaque noise barriers along 1-680; if noise barriers are <br />provided, implement Measure NIb. <br /> <br />Measure Nib. Plan for noise mitigation in a manner that takes account of the visual <br />consequences of noise barriers on views of the site from the outside and on views from <br />within the project <br /> <br />FindinlZ: Specific economic, social, or other considerations make infeasible mitigation <br />measures or project alternatives identified in the Final EIR. <br /> <br />Facts in SUpDort of FindinlZ: The following facts demonstrate that it is not feasible to <br />mitigate the impact to a less than significant level. <br /> <br />a. Mitigation Measure Nla is not feasible to mitigate Impact Nl because it is <br />not technologically possible to maintain acceptable noise levels on the site without placing <br /> <br />SF:FMP\AGR\WEX\6II38664.2 <br />062499 <br /> <br />A-63 <br /> <br />WEX-660S3 <br />