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BISSELL & KARN. INC. <br /> <br /> Job #8804048.00 <br /> November 4, 1988 <br /> <br /> 2.3 Review acoustical Investigations by Caltrans to determine height <br /> of soundwall to mitigate noise to FHWA standard. Review wall <br /> type alternatives. <br /> <br /> 2.4 Review Negative Declaration and Finding Of No Significant Impacts <br /> (FONSI) prepared by Caltrans for any pertinent information, <br /> <br /> 2.5 Contract with title company to prepare Title Report for Zone 7 <br /> property. <br /> <br />3.0 Surveys and Base Mapping <br /> <br /> 3.1 Prepare base mapping at 50-scale showing topographic features <br /> within the construction area; Including the existing right-of- <br /> way and property lines as obtained from record data and recent <br /> Caltrans survey. It Is anticipaled that existing aerial <br /> topographic mapping could be used for this task. <br /> <br /> 3.2 Perform topographic surveys to provide existing ground profile <br /> along preferred soundwall alignment. Locate existing fences and <br /> property corners. Also locate any potential obstructions. <br /> <br />4.0 Develop Sewer Alignment Alternatives <br /> <br /> 4.1 Develop and evaluate sewer alignment and channel configuration <br /> options regarding the relationship of the existing sanitary <br /> sewer, the proposed Crosstown Interceptor Sewer and the proposed <br /> soundwall, Determine sizes of sewer pipe needed for each <br /> alternative. Review potential types and locations for soundwall <br /> footings. Investigate potential maintenance road locations and <br /> channel side slopes. Coordinate with Brown & Caldwell. Berlogar <br /> to study canal bank stability, trench shoring and other related <br /> Issues. Investigate feasibility of constructing sanitary sewer <br /> relocatlons as separate project subsequent to soundwall <br /> construction. <br /> <br /> 4.2 Prepare letter-report discussing the alternatives. Recommend one <br /> alternative. Submit 2 copies of letter-report each to City of <br /> Pleasanton, Caltrans and Zone 7. <br /> <br /> 4.3 Obtain conceptual approval of soundwall, sanitary sewer and <br /> maintenance road configuration along flood control channels from <br /> Zone 7, City and Caltrans. <br /> <br />5.0 Preliminary Design <br /> <br /> 5.1 Prepare preliminary plans showing proposed alignment, profile, <br /> and aesthetic treatment of the soundwall, for review and approval <br /> by City and Zone 7. Prepare conceptual plans for the sanitary <br /> <br /> PTP.32.16 2 <br /> <br /> <br />