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All living trees will be protected under these guidelines. The large and picturesque <br /> individual trees are obvious candidates, but the younger and smaller trees which constitute <br /> the replacement generation for the Ranch's mature trees will also be protected. In addition, <br /> fallen dead trees will be conserved wherever possible because of their values to wildlife <br /> and nutrient cycling. <br /> TPZ- The tree protection zone <br /> The TPZ for trees at Buckeye Ranch is defined as follows: <br /> The Tree Protection Zone is a column with a width 1.5 times the diameter of the tree <br /> canopy, and with a height extending three feet above the highest branch and six feet below <br /> the soil surface. <br /> Although only half of a tree is visible,roots - the hidden half- are particularly at risk <br /> during construction. For this reason we will define the tree protection zone broadly and set <br /> the simple goal of avoiding any surface. grade. soil density or other alterations within this <br /> zone. According to our best information, over 90 percent of the trees biomass will be <br /> contained within the TPZ as defined (Hagen 1990). Please notice that on the surface this <br /> area extends well beyond the dripline of the tree. In cases where trees are grouped, the TPZ <br /> will be defined for the grove. <br /> Hazards to Trees <br /> Several tree hazards are regularly encountered on construction sites. Above ground <br /> problems include damage to foliage, branches and trunks from equipment. Trucks and <br /> Buckeye Ranch Resource Plan (November, 1993) <br /> 106 <br />