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Scope of Work Preparation of Plans,Specifications and Estimates Sunol Boulevard/1-680 Improvements Project August 21,2023 • Approval of a NEPA Categorical Exclusion. AECOM will complete a Caltrans Categorical Exclusion Checklist and a NEPA Categorical Exclusion Determination Form. Task 8.2 Other Technical Report Addenda If the PS&E project design affects areas not addressed in the existing technical reports, Caltrans is anticipated to require additional studies or addenda to be prepared in accordance with Caltrans procedures. Data developed under previous studies will be used to the extent feasible. Depending on the locations and nature of the changes, addenda could be required for the Natural Environment Study, Jurisdictional Delineation, Visual Impact Assessment, and Cultural Reports. For purposes of this scope, it is assumed that up to three technical addenda may be needed. In addition, since the project area is sensitive for paleontological resources, paleontological monitoring during construction will be required in accordance with the project's California Environmental Quality Act (CEQA) Initial Study with Mitigated Negative Declaration (IS/MND). At 95% PS&E, AECOM will update and finalize the monitoring recommendations from the 2021 Paleontological Evaluation Memo for the 1- 680 Sunol Boulevard Interchange Improvements Project and the 2019 I-680 Express Lanes from SR 84 to Alcosta Boulevard Project: Paleontological Evaluation Report/Paleontological Mitigation Plan (PER/PMP). The information will be presented in short a memo that includes a table of monitoring recommendations by station number/area. Task 8.3 Re-Validation and Environmental Commitment Record AECOM will prepare a NEPA/CEQA Re-Validation, which Caltrans requires to confirm that the environmental document approved during PA&ED remains valid before the project proceeds to the next approval (Ready to List). The Re-Validation only needs to address substantial changes in the project design, right-of-way needs/acreages, and/or environmental setting, impacts, and commitments that affect the original findings of the environmental document. This scope assumes up to two iterations of the Re-Validation may be needed—one to submit with the CDFW permit applications (because CDFW will not issue permits for projects with pending CEQA clearance), and a second one to record final impact and mitigation acreages from the regulatory agency permits. As part of the Revalidation, AECOM will create an Environmental Commitment Record (ECR) based on measures developed during the PA&ED phase and requirements from the regulatory permits that must be implemented before, during, and after construction. The ECR is also required for RTL. The ECR will document the environmental commitments that apply to the project or plans, including: • Preconstruction surveys for Diablo helianthella and Congdon's tarplant; western pond turtle, western burrowing owl, San Francisco dusky-footed woodrat, American badger, bats, migratory birds, raptors, and nesting birds; and California tiger salamander, California red-legged frog, and Alameda whipsnake; Page 31 of 42