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• • 12.2 Street Tree Inventory. A complete street tree inventory (with each tree located in the data base by street and address) is a necessary management tool for integrating service requests with work planning/ scheduling and the development of tree work histories. The benefits of a computerized street tree inventory are as follows: * Work Management. A tree -by -tree inventory allows managers to maximize efficient allocation of available manpower and equipment resources based on the actual species, size, condition and meinteciance requirements of the tree population. * population Management and Master Street Tree Planting j Plan. A complete inventory is the basis for a Nester Plan. This is a key planning tool for achieving species diversity as well as determining what species and locations should be planted in the future. * Accurately Track and Respond to Service Requests and Prevent Repeat Inspections. A tree-by-tree inventory with each tree touted . by street and address in the computerized data base, will expedite service request responses _ •__;;; _ and tracking to ensure'alt requests are responded to in a timely and professional mercer. _ A tree- by-tree management system would allow quick access to the service histories of individual trees adjacent to residents' homes. This will allow clerical staff to identify any pest work done on the tree and the likely tieing of future work based on a scheduled systematic pruning program. Repeat inspections can easily be avoided. * Accurate Information for Management Decisions. .,. Data on maintenance needs, condition and size of the tree population can be stsamerized at any time on - work performed or to develop budgets .and prioritize resources. • * Accurate Cost Analysis. York completed is recorded by individual tree. This allows accurate and complete cost analysis of people, equipment and material including the extent and frequency of services. The man -hour requirements for pruning, removal, and other maintenance work varies with tree species, size and condition. Resource expenditures identified by tree serviced would provide more accurate date for future manpower /equipment budgeting. * Continuous Inventory. A computerized inventory that is kept up to date using • the daily work reporting forms ensures the upfront costs of an inventory area one time capital expense that will continuously benefit Vancouver in the future. - * Liability Identification /Investigation. Potential tree liabilities can be listed out of the inventory for special inspection and care. The inventory allows for proactively identifying potential hazardous conditions before they become • liability to the city. Service histories of individual trees will be readily available if required for investigations related to lawsuits. * IPM and Insect and Disease Control. • A coaputerized inventory is necessary in a state -of- the - art integrated program of pest management. User defined lists of locations of species can be generated for specific treatments, for example. Also, treatments can be recorded and results monitored from computerized printouts. * Long Term Species Evaluation and Costing. By tracking performance and maintenance costs, the best species for a particular type of site can be determined. The performance of genera, species and cultivars can be evaluated. A tree-by-tree inventory accompanied by individual tree service histories provides a comprehensive basis on Which to evaluate the potential future maintenance requirements of the street tree population, by species, age, and condition. further, this informatioci is necessary for future decision making about street tree selections. -11-