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1630 SAN PABLO AVENUE.SUITE 300 OAKLAND.CALIFORNIA 94612 Exhibit A T 510 601 2500 F 510 601 2501 November 3, 2021 Matt Gruber City of Pleasanton, City Landscape Architect Engineering Department 200 Old Bernal Avenue, P.O. Box 520 Pleasanton, CA 94566 Submitted via email Subject: Augustin Bernal Mountain Bike Trail Additional Services Dear Mr. Gruber: Dudek is pleased to submit this scope of work and cost for additional services for the Augustin Bernal Mountain Bike Trail project. This scope covers additional work on the project design and Initial Study/Mitigated Negative Declaration (IS/MND)to better demonstrate measures intended to avoid impacts to the Alameda whipsnake and support for the City of Pleasanton (City) in project implementation.The project design work includes additional fieldwork to map trails that will be decommissioned in the area and update construction drawings to include protection measures to avoid potential impacts to the snake.The project implementation support services include preparation of a Stormwater Pollution Prevention Plan (SWPPP) and completion of pre-construction site surveys and construction monitoring in accordance with the project's biological resources protection measures. The task numbering presented in this scope of work correlates with the task numbering in our existing contract, using Task 4.2 for revisions to the IS/MND, Task 5 for Project Management, and Task 7 for Trail Design;and adding Tasks 8 and 9 for project implementation support. Task 9 costs will be determined once the design is complete and the project is bid. I look forward to hearing from you after you have reviewed this scope of work. If you have any questions, please give me a call at 530.863.4642 or email me at kwaugh@dudek.com. Sincerely, Katherine Waugh,AICP Senior Project Manager