Agmt21 Environmental Science Associates Transit District

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Proposed Work Program June 2021 City of Redwood City / Transit District Subsequent EIR 11 Environmental science associates REV: 06-22-21 MI system, showing locations and diameters of existing and proposed facilities. Included maps will compare the capacity of each respective system for the pre-project condition, the post-project condition and the mitigated post-project condition, in order to ensure that there is no impact to the service performance of the various City utility systems. The draft report will be submitted to the City for review, and a meeting (budgeted in Task 4) will be held to review the City’s comments, at which point a final Engineering Report will be submitted. Budgeting assumes that no significant changes will be required to prepare the final Engineering Report. Task 4. Meeting and Project Management: This task assumes two face-to-face meetings: a project kickoff meeting, at which key assumptions for the technical evaluations will be reviewed; and a project meeting to review City comments on the draft Engineering Report. Sanitary Sewer (Woodard and Curran) The sanitary sewer analysis will use the sewer system hydraulic model developed for the City as part of its Sanitary Sewer Master Plan initiated in 2019. The Sewer Master Plan analyzed the capacity of the City’s sanitary sewer system under two scenarios: existing (based on water consumption and flows measured in the system during the 2018/2019 time frame) and future (based on development projects “in the pipeline” at that time, as well as potential development of vacant or underutilized parcels in accordance with current zoning and land use plans. The specific development projects and types and quantities of land uses were provided by the City’s Community Development Department planning staff and are documented in the draft Master Plan report. The Master Plan identified capacity deficiencies in the sewer system and developed potential sewer capacity improvement projects to convey the predicted peak flows. In all cases, capacity requirements were defined based on the peak flow under a 10-year design storm event. For this Sewer Capacity Impact Analysis, Woodard & Curran will update the existing model scenario to incorporate any development projects that have been constructed since 2019 (based on information to be provided by the City). Woodard & Curran will also create a “baseline future” scenario on which to evaluate the cumulative impact of the Transit District and Gatekeeper projects, as well as other planned or potential future developments. The projects (and associated land use quantities) to be included in this scenario will be provided by the City. It is assumed that this will involve an update to the future project list that was used for the Master Plan. The City will also provide the latest information on the land use types and quantities for the Transit District and Gatekeeper projects. Woodard & Curran will conduct a separate model run of the updated existing and baseline future scenarios with and without the Transit District. Based on the model run, Woodard & Curran will identify improvements needed to convey design peak flows under the existing and baseline future scenarios in accordance with the design flow and hydraulic criteria established in the Sewer Master Plan, and will identify any additional capacity improvements needed to convey project flows. Woodard & Curran will prepare a Technical Memorandum for the Transit District area, summarizing the methodology, assumptions, and results of the modeling. Comments received on the draft Memorandum will be incorporated into a final Technical Memorandum to support the CEQA analysis. Woodard & Curran will conduct normal project management activities, including monitoring budget and schedule and preparing monthly invoices and progress reports. Woodard & Curran will attend up to three (3) meetings or teleconferences related to this project. ATTY/AGR.2021.149/ESA (Transit District CEQA) (Page 21 of 26)