RES 211231 Exhibit A - Laserfiche WebLink

City of Pleasanton–10x Genomics Project Environmental Checklist and Initial Study/Mitigated Negative Declaration Environmental Evaluation FirstCarbon Solutions 55 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480024/ISMND/wp/21480024 10x Genomics Project Full Screencheck ISMND.docx 7. Maintain the existing irrigation system. If the existing irrigation system is not functional, have a temporary system installed (using soaker hoses or PVC pipe laid on the ground and covered with mulch) as soon as possible to supply the trees with water and help them recover and prepare them for impacts associated with the construction process. Pre-construction Treatments 1. The contractor and construction superintendent shall meet with the Consulting Arborist before beginning work to discuss work procedures and tree protection. 2. Fence all trees to be retained to completely enclose the Tree Protection Zone prior to grubbing or grading. Fences shall be 6-foot chain link or equivalent as approved by Consulting Arborist. Fences are to remain until all grading, construction and landscaping is completed. Place weatherproof signs, 2 feet by 2 feet, on the fencing that read “Tree Protection Zone Keep Out” (e.g., one sign for each of the four compass points). 3. Where possible, cap and abandon all existing underground utilities within the Tree Protection Zone in place. Removal of utility boxes by hand is acceptable but no trenching should be performed within the Tree Protection Zone in an effort to remove utilities, irrigation lines, etc. 4. If structures and underground features have to be removed within the Tree Protection Zone it shall be done by hand or using the smallest equipment and operate from outside the Tree Protection Zone. The Consulting Arborist shall be on-site during all operations within the Tree Protection Zone to monitor construction activity. 5. Tree(s) to be removed that have branches extending into the canopy of tree(s) to remain must be removed by a qualified arborist and not by construction contractors. The qualified Arborist shall remove the tree in a manner that causes no damage to the tree(s) and understory to remain. Stumps shall be ground below grade. 6. Prune trees to be preserved to clean the crown and to provide clearance. All pruning shall be done by a State of California Licensed Tree Contractor (C61/D49). All pruning shall be done by Certified Arborist or Certified Tree Worker in accordance with the Best Management Practices for Pruning and adhere to the most recent editions of the American National Standard for Tree Care Operations (Z133.1) and Pruning (A300). 7. All tree work shall comply with the Migratory Bird Treaty Act (MBTA) as well as California Fish and Game Code Section 3503—3513 to not disturb nesting birds. To the extent feasible tree pruning and removal should be scheduled outside of the breeding season. Breeding bird surveys shall be conducted prior to tree work. Qualified Biologists shall be involved in establishing work buffers for active nests. 8. Apply and maintain 4–6-inches of wood chip mulch within the Tree Protection Zone.