RES 211231 Exhibit A - Laserfiche WebLink

Environmental Checklist and City of Pleasanton–10x Genomics Project Environmental Evaluation Initial Study/Mitigated Negative Declaration 54 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 Mitigation Measures MM BIO-1 Migratory Birds • To prevent impacts to Migratory Bird Treaty Act (MBTA ) and/or Fish and Game Code-protected birds, nesting raptors, and their nests, removal of trees shall be limited to only those necessary to construct the proposed project. • If any tree removal is necessary, then it should occur outside the nesting season between September 1 through January 31. If trees cannot be removed outside the nesting season, preconstruction surveys shall be conducted no more than 7 days prior to tree removal to verify the absence of active nests. • If an active nest is located during pre-construction surveys, construction activities shall be restricted as necessary to avoid disturbance of the nest until its young has fledged or the agencies deem disturbance potential to be minimal. Restrictions may include establishment of exclusion zones (no ingress of personnel or equipment at a minimum radius of 100 feet around an active nest depending on the species) or alteration of the construction schedule. • A qualified Biologist shall delineate the buffer using Environmentally Sensitive Area fencing, pin flags, and or yellow caution tape. The buffer zone shall be maintained around the active nest site(s) until the young have fledged and are foraging independently. MM BIO-2 Tree Preservation Guidelines The following requirements would reduce impacts to trees from development and maintain and improve their health and vitality through the clearing, grading and construction phases. 1. All plans affecting trees shall be reviewed by the Consulting Arborist with regard to tree impacts. These include, but are not limited to, grading, drainage and utility plans, and landscape and irrigation plans. 2. A Tree Protection Zone shall be established around each tree to be preserved. Tree Protection Zones are described in the Tree Protection Plan (provided under separate cover). No grading, excavation, construction or storage of materials shall occur within that zone. 3. Underground services including utilities, sub-drains, water or sewer shall be routed around the Tree Protection Zone. Where encroachment cannot be avoided, special construction techniques such as hand digging or tunneling under roots shall be employed where necessary to minimize root injury. 4. Tree Preservation Notes, prepared by the Consulting Arborist, should be included on all relevant plans. 5. Any herbicides placed under paving materials must be safe for use around trees and labeled for that use. 6. Irrigation systems must be designed so that no trenching will occur within the Tree Protection Zones.