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• Engineering Study: An engineering study will evaluate existing water, wastewater, and stormwater infrastructure conditions, and further, will provide an assessment of infrastructure upgrades needed to support buildout of the proposed land use plan, including planning-level cost estimation. • Traffic and Transportation Engineering: A traffic and transportation study would analyze proposed land use and roadway network changes in the preferred plan, subsequent to securing data for existing conditions. Impacts to study intersections would be calculated using a traffic model, and mitigation measures will be identified for impacts that exceed thresholds established in the significance criteria. • Noise Analysis: A noise analysis would calculate traffic noise levels based on provided existing and future traffic volumes, speeds, and truck percentages for each roadway, and use this data to inform a noise contour map for the future project scenario. The outcome of the analysis will be used to understand noise impacts on sensitive uses and identify policy-level mitigation. In addition, staff is requesting a contingency budget of$27,671 for additional work items not included in this amendment or the original budget. The total amount of the professional services contract, including the amendment would be $533,366, plus a 12 percent contingency of the additional contract amount. Dyett & Bhatia is the lead professional services firm working on this effort, and staff believes that its qualifications and understanding of the project make it the best qualified firm to undertake the CEQA analysis. Further, the additional subconsultants including civil engineering firm BKF Engineers, traffic engineering firm Fehr & Peers, and noise consultant Charles Salter Associates are well qualified to perform the work necessary and are familiar with Pleasanton. Since this contract amendment is subject to City Council approval, and because the services included with the amendment are an expansion of an existing contract secured subsequent to competitive bidding, an additional request for qualifications is not required. Staff believes the above additional work items are essential to the forthcoming discussion with the Task Force, and for the amended Specific Plan to be adopted by the City. Upon approval of this contract amendment, staff and the professional services team will proceed with the technical studies and CEQA review, and the preparation of the draft specific plan as outlined above. Submitted by: Fiscal eview: Approved by: 1✓� Gerry Beaudin Tina Olson Nelson Fialho Director of Community Director of Finance City Manager Development Attachment: 1. Draft First Amendment to Professional Services Agreement, Scope of Services and Budget Proposal Page 3 of 3