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Scope of Work Preparation of Plans,Specifications and Estimates Sunol Boulevard/I-680 Improvements Project August 21,2023 Time-weighted shear wave velocity for development of ARS curve and design PGA based on Vs30 presented in November 2021 SPGR; no additional field studies to refine Vs30 value are proposed. Encroachment permits/right of entry agreements required for geotechnical exploration on City, County, State and private properties to be provided by Client and at no cost to AECOM. Timely Caltrans, City and/or County approval to allow for access to drill with traffic control for minimum 8 hour shifts, Monday through Friday. No special pavement repair, such as use of hot mix asphalt,will be required; borings backfilled to original grade with lean concrete in any paved areas. Soil cuttings are non-hazardous and can be removed from the site after each shift by drilling subcontractor. If found to be hazardous,City will need to provide a place to store cuttings and additional costs will apply for disposal by a licensed hazardous waste hauler. Scope of work assumes a Materials Report, if needed, will address design of new pavements along Sunol Boulevard and Pleasanton Sunol Road only since pavement recommendations for ramp widening was developed by Caltrans in their October 15, 2019 memorandum (EA 04-OJ620) and considered sufficient by Caltrans during PA&ED. Task 2.6 Geometric Refinements This task will refine the design files to serve as background and basis for developing the PS&E (Task 3.2). Master Geometric Electronic files will be refined based on the results of the ground survey work to establish the final vertical and horizontal alignment of the project and to identify additional design exceptions. The Project Report (PR) preliminary design will be checked for potential conflicts with existing facilities or deviations from the project design criteria and design standards. Structure location and limits, right of way requirements, coordination of above and below ground utilities, stage construction, traffic handling, and environmental constraints will be collectively considered in this effort. The drawings will include the following information: • Horizontal and vertical clearances • Public roads, streets, creeks, channels, and major developments • Right-of-way lines with access control and access locations • Layout lines Design Reports AECOM will prepare Design Reports for highways and structures. The reports will utilize applicable existing information, including information generated from the PA&ED phase. The submittals will contain sufficient design calculations and information based on currently available Caltrans' design criteria. Page 14 of 42