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ATTACHMENT A SCOPE OF SERVICES 1. SUMMARY: The City of San Leandro is requesting a bid to top off a row of mature eucalyptus trees; and trimming of four other park trees. The row of eucalyptus trees runs a length of approximately 525 feet and is located at the top of bank (south side) of San Leandro Creek. City is requesting alternate bids of topping to a height of 50’ and topping to a height of 30’ above grade. There are also three mature park trees that are to be trimmed and shaped, and a fourth tree to be removed. 2. SCOPE: Furnish all labor, tools, equipment, materials, transportation, and perform all operations necessary and incidental for the proper execution and completion of all tree topping and trimming in accordance with the specifications. 3. STANDARDS: All tree work shall include removal and off-haul of all wood. For the trees topping, branches greater than two feet in length and/or two inches in diameter shall NOT be allowed to remain within the creek bed. All tree-topping work must be accomplished from the top of bank (no equipment shall be allowed within San Leandro Creek). The one tree removal shall include grinding down the stump and surface roots. Grade and compact with crown of 2 inches above surrounding grade to allow for settling. Remove and off-haul excess grindings. Prior to start of work, contractor shall consult with Parks Supervisor if any logs/chips may be utilized on-site or at another City park location. Trimming of the three noted park trees shall be done in accordance with the International Society of Arboriculture, Western Chapter Pruning Standards (1988), the National Arborist Association Pruning Standards for Shade Trees (revised 1988), and in compliance with ANSI Z133.1 (1988 Safety Standards). Specifically, the quality of work shall be consistent with the National Arborist Association definition of Fine Pruning (Class 1) and including thinning, removal of dead wood and tipping back. Contractor is required to have a thorough knowledge of these standards and is to have copies of these standards onsite where work is being performed. All final cuts shall be made sufficiently close to the trunk or parent limb, without cutting into the branch collar or leaving a protruding stub, so that closure can readily begin under normal conditions. Excessively deep flush cuts that produce large wounds or weaken the tree at the cut shall not be made. Sharp pruning tools shall be used to ensure clean cuts. All pruning tools and saws shall be kept sharpened to result in final cuts with smooth wood surface and secure bark remaining intact. It is necessary to use the three-step cutting technique on branches that are too heavy to handle to prevent splitting or peeling the bark. In addition, in order to minimize damage to the three park trees, no climbing with spikes is allowed. Trees are to be raised from the sidewalk and street, thinned, trimmed back from buildings and wires (Utility Service Drops), and streetlights should be cleared as much as possible. Long, heavy limbs shall be lightened, and as is consistent with the growth stage of the tree, have all basal and inside sucker growth removed as is consistent with the above standards.