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Exhibit A SCOPE OF SERVICES Consultant shall revise the ridership forecast (Task 1.6) as set forth below. Consultant shall additionally make revisions to its analyses due to the change in the ridership forecast regarding financial feasibility (Task 1.7), benefit -cost (Task 2.3), and economic impact (Task 2.4) tasks as a result of changes made to task 1.6. Consultant will complete the following tasks and perform the travel demand forecast analysis to incorporate the Water Emergency Transportation Authority's (WETA) vessel capacity thresholds. Consultant will revise the forecast to consider additional variables affecting ridership including but not limited to WETA's capacity requirements, growth in ridership over the period studied, and WETA's experience with ridership in their system. Task 1.6 — Ridership / Travel Demand Forecast The purpose of this task is to consider the challenges of new ferry service and forecast ridership for the service scenarios developed in Task 1.5. As noted in the previous task, the Consultant will use a workbook -based gravity model to forecast ridership, since macro regional models cannot take into consideration the subtleties that influence ferry ridership. The forecast will produce ridership estimates for a future No -Build Base Alternative and three future years for up to three operating scenarios / Build Alternatives. For the future years, the forecast will include transit mode split with and without ferry service and future ridership demand given potential residential and employment growth under the City of Redwood City General Plan and major employer job growth forecasts, if available (see Task 1.6.1). The Consultant will estimate daily demand during AM/PM peak periods, and peak and low seasons, and project annual ridership. Sensitivity testing will be used to evaluate land use alternatives necessary to generate minimum, viable ridership, as defined under Task 1.2.2 Evaluation Criteria. Task 1.6.1 — Estimate Ridership Consultant will forecast the minimum viable ridership forecasts for up to three (3) future years. We will also develop ridership forecasts for the forecast duration based on the assumptions. Consultant will develop a spreadsheet -based ridership forecast model that accounts for travel times (including wait times), travel costs for the alternative routes and ferry routes, and other characteristics unique to ferry travel. The Consultant will use cost ratio methods and information from the travel surveys to assign traffic between routes served by ferry and those not served by ferry. In accomplishing this, the Consultant will utilize the most feasible/cost efficient methodology, based on the available data and updated forecasting models. The following approach will be applied: ■ The Consultant will utilize diversion models and apply cost constraints and elasticity relationships. The diversion analysis will be based on the relative REV: 10-02-2020 PR ATTY/AGR.Amend. No. 1/CDM Smith, Inc. (Page 3 of 4)