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3.General Provisions VI <br /> above the root system or around the trunk,destruction of the natural shape or any action which <br /> causes infection,infestation or decay. <br /> DBH. Diameter at breast height,typically measured at 4'-6'above the ground. <br /> DETENTIONAREA. Area of a detention pond from the normal water level and up <br /> the side slopes to 10'offset from the high water level. <br /> DISTURBANCE. Any construction,development,removals,earth movement, <br /> clearing or other similar activity. <br /> DRIP LINE. Imaginary line on the ground that is extended straight downward from <br /> the outermost edge of the canopy. <br /> ENVIRONMENTALLP SENSITIVE AREA(ESA). Commented[KS1]:Need definition. <br /> FOUNDATIONLANDSCAPE ZONE. An area located within 15'of the building <br /> INVASIVE SPECIES. A plant non-native to the local ecosystem which exhibits,or <br /> has the potential to exhibit,uncontrolled growth and invasion or alteration of the natural <br /> functions of any native habitat. <br /> LARGE SHRUB. Large shrubs have a mature height over 6'. <br /> LARGE TREE. Over story deciduous trees with a mature height of at least 40'. <br /> MEDIUMSHRUB. Medium shrubs have a mature height of 3'-6'. <br /> MEDIUM TREE. Deciduous trees with a mature height over 18'and up to 39'. <br /> NATURAL RESOURCE PROTECTED AREA. <br /> NATURAL RESOURCE CONSER VA TION AREA. <br /> NATURAL RESOURCE CORRIDOR ENHANCEMENT AREA. <br /> REMOVAL. Actual removal or effective removal through actions resulting in the <br /> death of a tree. <br /> ROOT PROTECTION ZONE. A protected area around an existing tree established <br /> by offsetting the drip line 5'away from the tree center. <br /> SCREEN. A barrier that hinders sight and,potentially,access. <br /> 3-32 <br />