NPSA West Coast Arborist Marina Park Tree Trim 04152021

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Non-Professional Services Agreement between April 1, 2021 City of San Leandro and West Coast Arborist, Inc.—Exhibit A Page 1 of 6 EXHIBIT A SCOPE OF SERVICES 1. SUMMARY: Removal of 27 trees; trimming of 11 trees; and planting of 27 15-gallon trees (to be provided by the City). Specific tree species and locations as provided at the mandatory site walk-thru. 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 removals, plantings, and trimming in accordance with the specifications. 3. STANDARDS: All tree removals 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. All tree trimming is to 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 on all sites 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 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. DocuSign Envelope ID: 62E86335-7C66-480B-861D-A9CC23655AE0