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City of Pleasanton—Hidden Canyon Residences and Preserve Draft EIR Biological Resources FirstCarbon Solutions 3.3-45 https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/EIR/3 - Draft EIR/21480016 Sec03-03 Bio Resources.docx Mitigation Measures MM BIO-5 Tree Preservation Plan For trees to be retained, a tree preservation plan shall be prepared for the project identifying all protection and mitigation measures to be taken. These measures will remain in place for the duration of construction activities at the project site. The following are recommendations for design and construction phases that will assist in successful tree preservation. Design recommendations a. Locate the trunk of all trees recommended for preservation that are located within 25 feet of the edge of grading and/or utility installation. Include trunk locations and tree tag numbers on all plans. b. Establish a Tree Protection Zone (TPZ) around each tree to be preserved. For design purposes, the TPZ shall be 3 feet behind the edge of grading. No grading, excavation, construction or storage of materials shall occur within that zone. c. Install protection around all trees to be preserved. No entry is permitted into a TPZ without permission of the Project Superintendent. d. Use only herbicides safe for use around trees and labeled for that use, even below pavement. 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 preserved may require pruning to provide adequate clearance from construction activities. All pruning shall be performed by a licensed State of California contractor possessing the C61 classification license and the D49 specification. All pruning shall adhere to the latest editions of the American National Standards Institute Z133 and A300 standards. 3. Install tree protective fencing at the edge of the TPZ. No grading, construction, installation or other activity is permitted within this area. 4. Stake the edge of grading along the East Bay Regional Park District (EBRPD) access road in order to review impacts to trees. Tree protection during construction: 1. Prior to beginning work, contractors working near trees to be preserved shall be required to meet with the Consulting Arborist at the project site to review all work procedures, access routes, storage areas, and tree protection measures. 2. Any grading, construction, demolition or other work that is expected to encounter tree roots shall be monitored by the Consulting Arborist. 3. 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.