RES 15810 - Laserfiche WebLink

m Encourage natural regeneration of native oaks(including blue oaks, valley oaks and coast live oaks)within undeveloped portions of the project site; • Reduce fire hazards during the dry season; and • Restrict livestock grazing. The oak woodland management plan would address tree replacement requirements as stipulated through City consultation with the CDFW for the project. Presently, the CDFW generally specifies a replacement ratio of 3:1 for the replacement of native oaks, regardless of the lost trees' positions relative to the riparian zone. The management plan should include restrictions on livestock grazing to ensure natural regeneration of oaks within the open space areas. Mitigation Measure 4.3-1b: The relevant provisions of the City of Pleasanton's Tree Ordinance, including acquisition of a tree removal permit(Section 17.16.020), reporting requirements for new property development(Section 17.16.050)and protection of existing trees(Section 17.16.070) shall be implemented. The Oak Woodland Restoration and Management Plan discussed above shall indicate the ratio, location, species, source of plant material and timing for planting. It shall also describe plans for maintenance and irrigation. Heritage trees should be replaced at a ratio consistent with the City's tree ordinance with small nursery stock. These ratios shall compensate for habitat values lost from the removal of mature trees. Planting time between November and January is recommended. To preserve the genetic integrity of trees of the site, acorns and seeds to be propagated should be collected on-site. A minimum maintenance and irrigation time of three years is recommended. In order to optimize tree preservation on-site,the following measures formulated by HortScience shall be implemented to protect trees that are proposed to be retained: Design Recommendations 1. Verity the location and tag numbers of all trees within 25 feet of the proposed construction areas 2. Allow the Consulting Arborist to review all future project submittals including grading, utility, drainage, irrigation, and landscape plans. 3. Prepare a site work plan which identifies access and haul routes, construction trailer and storage areas, etc. 4. Establish a Tree Protection Zone around each tree to be preserved. For design purposes,the Tree Protection Zone shall be the edge of grading. No grading, excavation, construction or storage of materials shall occur within that Zone. 5. Install protection around all trees to be preserved,to be located three feet outside the limit of grading. No entry is permitted into a Tree Protection Zone without permission of the project superintendant. 6. Route underground services including utilities, sub-drains, water or sewer around the Tree Protection Zone. Where encroachment cannot be voided, special construction techniques such as hand digging or tunneling under roots shall be employed where necessary to minimize root injury. 7. Use only herbicides safe for use around trees and labeled for that use, even below pavement. 8. Design irrigation systems so that no trenching shall occur within the Tree Protection Zone. Pre-Construction and Demolition Treatments and Recommendations 1. The demolition contractor shall meet with the Consulting Arborist before beginning work to discuss work procedures and tree protection. 2. Trees to be removed shall be felled so as to fall away from Tree Protection Zone and avoid pulling and breaking of roots of trees to remain. If roots are entwined, the consultant may require LUND RANCH II(PUD-25)RESIDENTIAL PROJECT 5 FINDINGS