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<br /> <br /> <br /> <br /> <br /> I. Constraints Analysis <br /> <br /> The Consultant shall prepare an evaluation of site constraints that may limit <br /> PROJECT design options, including the need to maintain ongoing freight and <br /> passenger rail operations, and the need to maintain adequate vehicle and <br /> transit access on affected arterials. All constraints developed by all studies <br /> and investigations carried out for this PSRE shall be considered in this <br /> analysis. <br /> <br /> Deliverables -Site Constraints Analysis. <br /> <br /> J. Alternatives Analysis and Structural Type Selection <br /> <br /> The Consultant shall develop a minimum of three ~3} viable alternatives for <br /> the grade separation and develop initial screening criteria. Based on the land <br /> use and the proximity of the I-5 ramps to the east and Santiago Street to the <br /> west, Santa Ana Boulevard will likely be lowered to cross the existing railroad <br /> tracks in an undercrossing configuration. Consideration of alternatives and <br /> criteria should be given to unique construction requirements such as "shoofly" <br /> track, California PUC vertical and horizontal track clearances, Metrolink and <br /> OCTA requirements and criteria, construction staging requirements and the <br /> TMP. Each alternative must efi~iciently accommodate the existing platform at <br /> SARTC and limit the construction cost and right-of-way impacts. <br /> <br /> Based on the screening criteria, the Consultant shall work with City and <br /> stakeholder staff to reach consensus on the alternatives to be carried forward. <br /> The Consultant shall then develop criteria for evaluating the remaining <br /> alternatives and shall consider construction impacts as one factor. The <br /> remaining alternatives shall be further refined and evaluated using the <br /> evaluation criteria and the results of all studies and investigations carried out <br /> for this PSRE. To assist in the documentation of comparisons between <br /> alternatives, the Consultant shall prepare a matrix of selection criteria and <br /> evaluation results for each alternative. Based on the evaluation, the <br /> Consultant shall recommend one or more alternatives and include an <br /> assessment of potential risks and strategies to mitigate, minimize, or <br /> eliminate risks as the recommended PROJECT proceeds through design and <br /> construction. <br /> <br /> Deliverables -Alternatives recommendation, criteria for evaluation, refined <br /> alternatives, matrix of selection criteria, and assessment of alternative risks. <br /> <br /> K. Conceptual Engineering Plans <br /> <br /> The plan development shall include two (2) milestone deliverables -Draft <br /> Conceptual Engineering Design and Final Conceptual Engineering Design. A <br /> plan set shall be prepared for each alternative. The Consultant shall prepare <br /> <br /> <br /> 10 <br />