Agmt11 Davey Resource Group- A Division of the Davey Tree Expert Co.

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Chapter 4 - Work Plan Our goal is your goal —to inventory your trees with the highest of professionalism and accuracy. In addition, we want you to be able to communicate the value of your urban forest in terms that can be understood and are scientifically sound. We will accomplish your needs by utilizing state -of -the -art technology developed through our years of experience. Deliverables will include: • Tree and vacant site inventory delivered into an updated geodatabase. • An i -Tree Streets analysis that includes reports of tree canopy percentage, quantification of Redwood City's urban forest structure, the environmental benefits, a dollar value calculation, and maintenance needs of the tree resource. • Sidewalk definition and damage measurement. • Meetings as requested. • TreeKeeper 7.7 Software, if desired. Tasks One and Two: Tree Inventory and Geodatabase Update Tree Inventory Methodology It is our understanding that Redwood City will provide us with electronic files of aerial photos and basemaps of the working area. These will be imported into DRG's Work Planning Software on pen -based computers for field data collection purposes. All street trees will be recorded with full address information as available (location, on street, from and to streets). Park, median, and other City - managed trees (e.g., City buildings) will be defined by area and/or address location. The following information provides definitions of the data fields that will be collected for each site: Mapping coordinate. X and Y coordinate locations (latitude and longitude). Additionally, each tree and planting site will be located using GIS maps and /or GPS equipment. Blockside. Davey Resource Group will identify the location of each street tree and planting site so that they can easily be identified for future maintenance work. Street trees and planting sites will be located using a street name, side of lot, tree number, and blockside information (on street, from street, and to street). Each tree and/or planting site at an address will receive a Site Number to aid in later locating the site. . Location. The trees physical location in relation to public ROW and /or public space will be recorded. Species. Trees will be identified by genus and species, cultivar if applicable and by common name. Diameter. Trunk diameter will be recorded to the nearest inch. Tree Height. Tree height will be estimated and recorded using a height range. Canopy Width. Tree canopy width will be estimated and recorded using a width range. Stems. The number of stems a tree has will be recorded. Prepared for City of Redwood City, California 9 Prepared by Davey Resource Group