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Page 2 <br /> July 24, 1996 <br /> Reference: Tree Assessment <br /> Location: West Broadway /Lincoln Street <br /> Subject: Construction Trauma <br /> The root flair at ground level of each tree was drilled with <br /> a 8 inch by 4 inch bit in 6 different locations. Increment boring <br /> was not done. <br /> TREE NUMBER ONE: <br /> Oregon Big Leaf —maple <br /> Located on the north side of West Broadway in a parking strip <br /> which measured 19.6 feet long and 9.6 feet wide. The tree is <br /> 42.2 feet from the intersection stop sign of west Broadway and <br /> Lincoln Street. <br /> The tree has a diameter at breast height (DBH) of 39.2 inches <br /> and a diameter at ground level (DGL) of 59.2 inches. The highest <br /> point of the tree is 66 feet and the diameter of the limb spread <br /> is 48 feet both north /south and east /west. The tree has an <br /> estimated age of 80 years. <br /> The tree is in fair to good health and structure. However, their <br /> are signs of decay in the upper trunks where it was topped <br /> approximately 34 years ago. I suspect several of these areas <br /> to have both open and enclosed decay areas which will make the <br /> tree structurally weaker as the tree continues to grow. <br /> The six inspection holes drilled in the base showed no signs <br /> of structural signs of deficiency, however there were signs <br /> of discoloration at a lateral depth of approximately 6 inches. <br /> This discolored wood would indicate some decay area further <br /> within the center of the tree. This could be contributed from <br /> the aforementioned topping. <br />