AECOM 1 - 2011 - Laserfiche WebLink

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I. Constraints Analysis The Consultant shall prepare an evaluation of site constraints that may limit PROJECT design options, including the need to maintain ongoing freight and passenger rail operations, and the need to maintain adequate vehicle and transit access on affected arterials. All constraints developed by all studies and investigations carried out for this PSRE shall be considered in this analysis. Deliverables — Site Constraints Analysis. J. Alternatives Analysis and Structural Type Selection The Consultant shall develop a minimum of three (3) viable alternatives for the grade separation and develop initial screening criteria. Based on the land use and the proximity of the 1-5 ramps to the east and Santiago Street to the west, Santa Ana Boulevard will likely be lowered to cross the existing railroad tracks in an undercrossing configuration. Consideration of alternatives and criteria should be given to unique construction requirements such as "shoofly" track, California PUC vertical and horizontal track clearances, Metrolink and OCTA requirements and criteria, construction staging requirements and the TMP. Each alternative must efficiently accommodate the existing platform at SARTC and limit the construction cost and right-of-way impacts. Based on the screening criteria, the Consultant shall work with City and stakeholder staff to reach consensus on the alternatives to be carried forward. The Consultant shall then develop criteria for evaluating the remaining alternatives and shall consider construction impacts as one factor. The remaining alternatives shall be further refined and evaluated using the evaluation criteria and the results of all studies and investigations carried out for this PSRE. To assist in the documentation of comparisons between alternatives, the Consultant shall prepare a matrix of selection criteria and evaluation results for each alternative. Based on the evaluation, the Consultant shall recommend one or more alternatives and include an assessment of potential risks and strategies to mitigate, minimize, or eliminate risks as the recommended PROJECT proceeds through design and construction. Deliverables — Alternatives recommendation, criteria for evaluation, refined alternatives, matrix of selection criteria, and assessment of alternative risks. K. Conceptual Engineering Plans The plan development shall include two (2) milestone deliverables — Draft Conceptual Engineering Design and Final Conceptual Engineering Design. A plan set shall be prepared for each alternative. The Consultant shall prepare 10