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Task 2.1 -Base Mapping and Survey Subtask 2.1.1—Base Mapping and Control Survey CONSULTANT will prepare topographic mapping in accordance with current Caltrans photogrammetric procedures (i.e. Step "A+B+C" method.). A proposed flight plan will be developed and the location of flight markers will be submitted to Caltrans for approval (Step A). Ground control surveys will be performed to lay flight markers and tie them into the state coordinate system. Results of the ground control (GPS) survey will be documented in a Survey Report and submitted to Caltrans for approval (Step B). The site will then be flown and ground control used to triangulate the mapping models. Caltrans approval of the triangulation calculations completes Step C and preparation of topographic mapping can commence. Mapping will be prepared in MicroStation format, consistent with Caltrans drafting standard at a map scale of 1:50 (English). The project area to be mapped is as shown in Figure 1 Site Map. Subtask 2.1.2—Field Survey Additional field survey work is also anticipated to locate details not clearly identified on the aerial mapping such as individual trees, and to pick up underground facilities such as drainage inlets. CONSULTANT will include right of way limits, existing horizontal control, utility and drainage facilities on the base mapping using available record data and distribute to the team. Task 2.2-Data Collection and Review CONSULTANT will coordinate with the CITY, Caltrans, and other affected agencies to identify and collect data relevant to the project such as as-built plans, details of planned development projects affecting the project area, related technical reports, right of way/easement records, traffic and accident data, and existing utility information. The collection of data developed for the PSR and 2011 Study will also be reviewed. A database of requests will be used to track progress. Task 2.3-Develop and Evaluate Design Alternatives This task will expand on previous studies and define alternatives in sufficient detail so that an . evaluation and subsequent selection of study alternatives can be made. The alternatives will be presented to CITY and PDT staff for review and comment. Findings will be presented in the Alternatives Evaluation Report. Subtask 2.3.1—Develop Design Alternatives CONSULTANT will define and evaluate five alternatives.Non-viable alternatives from previous studies and reasons for rejecting them will also be documented. CONSULTANT will prepare preliminary geometrics using the updated base mapping and investigate alternative configurations to achieve the most cost-effective solution with the least impact on environmentally sensitive areas and private property. Construction phasing opportunities will also be investigated (e.g. advance utility relocation, discrete functional segments to match funding goals). The alternatives will be analyzed to qualitatively compare cost,traffic operations, safety, design exceptions, environmental impacts, right of way and utility relocation requirements. ATTY/AGR/2013.164/URS PROFESSIONAL SERVICES AGR REV:10-15-13 VR Page 14 of 78