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Attachment 2: Landscaping and Tree Preservation Standards Page 4 <br />4 Canopy Cover (C). The purpose of this requirement is to mitigate the effects of vehicular <br />hardscape by establishing tree canopy cover to intercept rainfall, protect pavement from sun <br />deterioration, reduce the heat island affect, and improve aesthetics. Vehicular hardscape <br />areas includes loading drives, parking lots, driveways, dropoffs and other areas covered with <br />a hard surface intended for vehicles. <br />a. The required minimum canopy coverage for each level is described in the following table: <br />Canopy Cover (C) Requirements <br />C <br />25% <br />C -2 <br />60% <br />b. The following equation shall be used to calculate required canopy coverage: <br />Vehicular Hardscape (Square Feet) x Canopy Cover Percent = Required Minimum Canopy Cover (Square Feet) <br />The total of the assigned canopy coverage values for all the trees in or near the vehicular <br />hardscape must be equal or greater than the required minimum. Pervious pavements are <br />considered 50% hardscape. <br />c. The assigned canopy coverage value of each tree is based on planting location, tree size <br />and anticipated tree canopy size 15 years after planting. The assigned canopy cover <br />value to each deciduous tree is described in the following table and illustrations: <br />Assigned Canopy Cover Value <br />Planting Location <br />(for new trees) <br />Interior parking <br />lot islands <br />Within less than 7' of <br />vehicular hardscape <br />edge <br />7' -12' from <br />vehicular <br />hardscape edge <br />signed Canopy Coverage 100% of the <br />Value* canopy square <br />footage <br />50% of the canopy <br />square footage <br />25% of the <br />canopy square <br />footage <br />o v+ v <br />tin �' v <br />.. ' ° H <br />U' o <br />47 y o' 3- <br />= •c <br />W D'v <br />to c I 41 <br />Large Tree <br />950 SF, or 1100 <br />SF per tree in <br />islands with 3 or <br />more trees <br />475 SF <br />238 SF <br />Medium Tree <br />490 SF <br />245 SF <br />123 SF <br />Small Tree <br />250 SF <br />125 SF <br />NA <br />Existing Tree: <br />6 -12 "dbh <br />1900 SF <br />950 SF <br />NA <br />Existing Tree: <br />12+ "dbh <br />2850 SF <br />1425 SF <br />NA <br />*Existing trees have assigned canopy coverage value when the dripline has proximity to the edge <br />of the hardscape; therefore, existing trees do not need to be within less than 7' feet of the <br />vehicular hardscape edge <br />• <br />• <br />• <br />