14 ATTACHMENT 04 - Laserfiche WebLink

David L. Bobby,Registered ConsultingArborise' July 8, 1013 10. All construction activities must be conducted beyond TPZs, to include, but not necessarily limited to. the following: grading, subexcavation, stripping of topsoil, trenching, equipment cleaning, stockpiling or dumping materials, and equipment/vehicle operation and parking. 11. Existing, unused lines, conduit or pipes within a TPZ should be abandoned and cut off at existing soil grade (rather than being dug up and causing subsequent root damage). 12. Prior to construction, a four- to six-inch layer of coarse wood chips should be manually spread within all exposed ground areas of the retained redwoods. The chips should be obtained from a state-licensed tree-service company, remain in place throughout construction, and not be piled against the trunks. 13. Great care must be taken during demolition of the existing hardscape to avoid excavating into roots and existing grade. The same should be applied during demolition of any walls, light posts, etc. to avoid damaging canopies. 14. The light post footing at trees #9 and 10 should be carefully removed to avoid inadvertently damaging the trees' roots. 15. The staging area(s) and routes of access should be established beyond TPZs. 16. Spoils created during digging shall not be piled or spread on unpaved ground within a TPZ; if necessary, they should be temporarily piled on plywood or a tarp. 17. Tree trunks shall not be used as winch supports for moving or lifting heavy loads. 18. Any approved digging or trenching within a TPZ shall be manually performed without heavy equipment or tractors operating on unpaved ground beneath canopies. 19. Prior to excavation for the car wash drive aisle, a one-foot wide trench should be manually dug along the perimeter of where soil excavation will occur closest to the 3192.Santa Rita Road, Pleasanton Page 7 of 10 Air.Joe Nguyen. AU Consulting