RES 211231 Exhibit A - Laserfiche WebLink

Environmental Checklist and City of Pleasanton–10x Genomics Project Environmental Evaluation Initial Study/Mitigated Negative Declaration 56 FirstCarbon Solutions Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480024/ISMND/wp/21480024 10x Genomics Project Full Screencheck ISMND.docx Tree Protection During Construction 1. Prior to beginning work, the contractors working in the vicinity of trees to be preserved are required to meet with the Consulting Arborist at the site to review all work procedures, access routes, storage areas, and tree protection measures. 2. Fences have been erected to protect trees to be preserved. Fences define a specific Tree P rotection Zone for each tree or group of trees. Fences are to remain until all site work has been completed. Fences may not be relocated or removed without permission of the Consulting Arborist. 3. Any excavation within the dripline or other work that is expected to encounter tree roots, such as the resurfacing work within the dripline of trees, should be approved and monitored by the Consulting Arborist. Roots shall be cut by manually digging a trench and cutting exposed roots with a saw, with a vibrating knife, rock saw, narrow trencher with sharp blades, or other approved root pruning equipment. The Consulting Arborist will identify where root pruning is required and monitor all root pruning activities. 4. If injury should occur to any tree during construction, it shall be evaluated as soon as possible by the Consulting Arborist so that appropriate treatments can be applied. 5. No materials, equipment, spoil, waste or wash-out water shall be deposited, stored, or parked within the Tree Protection Zone (fenced area). 6. Any additional tree pruning needed for clearance during construction must be performed by a qualified arborist and not by construction personnel.