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aA <br />URBAN FOREST MANAGEMENT PRACTICES <br />1.2.4 Annual Tree Service Data <br />Keeping current and detailed records on the total number <br />of pruning, plantings, and other services performed by the <br />City allow for the City's Urban Forestry -related staff to track <br />service trends of the City -managed tree inventory. It will also <br />allow the City to determine gaps between the current level <br />of tree service and the ideal level of tree service it wants <br />to provide based on its UFMP goals. Table 1-7 shows five <br />current annual tree service metrics and how they measure <br />up to current tree service goals. <br />One tree service metric that the City is performing well <br />is keeping up with the removal of dead trees in a timely <br />manner. The City reported that, in most cases, dead trees <br />are removed within four to eight weeks of the removal <br />request, and there are no remaining removal requests by <br />the end of the year. Table 1-7 also illuminates a few metrics <br />where the City is not meeting their tree service standards, <br />which includes tree planting and establishment care. Based <br />on the last six years of data, an average of 151 trees are <br />planted and 254 trees are watered annually by the City. <br />To meet a three-year establishment and watering period <br />goal, around 675 trees would need to be watered annually. <br />The lack of a formal three-year establishment program <br />and insufficient watering of newly planted trees could be a <br />102 1 CITY OF PLEASANTON URBAN FOREST MASTER PLAN <br />potential reason why the City's annual removals (average of <br />226 per year) are outpacing their tree plantings (average of <br />151 per year). <br />Another area where the City could improve adding structural <br />pruning for new trees, which it doesn't currently conduct. <br />Structural pruning can save costs down the line because <br />it is easier, less expensive, and more beneficial for trees to <br />address a structural problem using a pair of pruners when <br />that tree is young versus needing to address a structural <br />problem when the tree is matured, which may involve much <br />more equipment and staff time. Generally, newly planted <br />trees need one to two years to establish in their new <br />environment once planted (Gillman 1997), but then should <br />receive structural pruning once a year for two to three years, <br />and then once again in two to three years later before it's <br />`graduated' to the mature tree inventory. Continuing to track <br />and analyze the service data regularly will allow the City <br />to better measure its progress toward achieving its tree <br />service standards and goals. The City does not currently <br />have a pest management program. Having this type of <br />program is an important prevention measure to mitigate tree <br />loss if an invasive pest enters the City's urban forest. <br />