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1.5 Alignment Selection <br /> <br /> a. Review Sewer Master Plan tentative alignment. <br /> <br /> b. List other feasible alternative alignments. <br /> <br /> c. Perform preliminary screening of alternatives by <br /> driving or walking. Select maximum of 3 most <br /> viable alternatives for detail evaluation. <br /> <br /> d. Determine the size and hydraulics of the three <br /> alternative interceptors. Calculate hydraulic <br /> profiles. <br /> <br /> e. Obtain 100 or 200 scale aerial maps supplied by <br /> the City for alternative alignments evaluation. <br /> Obtain elevation information along alternative <br /> alignments from USGS maps and existing improvement <br /> plans. Supplement with ground survey (maximum of <br /> two days). <br /> <br /> f. Identify recommended pipe materials and <br /> construction methods. <br /> <br /> g. With City staff assistance, establish selection <br /> criteria for evaluation of alternatives. <br /> <br /> h. Evaluate alternatives on the basis of costs and <br /> other selected criteria. <br /> <br /> i. Recommend the most desirable alternative. <br /> <br /> j. Determine required permits, rights-of-way, or <br /> easement. <br /> <br />1.6 Prepare Preliminary Design Report <br /> <br /> a. Incorporate results of Tasks 1.1 through 1.5 into <br /> a draft written report (5 copies) and submit it to <br /> the City for review and comment. The preliminary <br /> design report will include recommendations on the <br /> items evaluated during preliminary design and Qill <br /> present the design criteria, preliminary project <br /> cost and construction cost estimates, and staging <br /> plan for the recommended alternative. <br /> <br /> b. Meet with City staff to discuss draft report, <br /> review recommendation and answer questions. <br /> <br /> Revised <br /> Exhibit A <br /> City of Pleasanton <br /> April 5, 1988 <br /> Page 3 of 8 <br /> <br /> <br />