Attachment N-5 <br />Page 1 of 5 <br />12/28/15 <br />Aborist's Recommendations <br />Eugene Town Place Suites <br />f. Entrance lane that flows past McGrath';: <br />A. West side of lane- Place orange plastic construction fencing from tree furthest north, past <br />the six street maples to the cluster of large tall maples that are at the north west corner of <br />new the 101 guest room building <br />B. East side of lane- place orange plastic construction fencing at the curbs that already <br />exist around the two peninsulas and two islands that are between the lane and <br />McGrath's parking lot. <br />C. Orange flagging should be attached to upward branches and leaders that exist within 14 <br />feet of the pavement surface. The flagging should hang down 3 feet over the lane. <br />Horizontal branches within 14 feet of the pavement surface should be properly removed <br />at the trunk or 'leader. <br />2. Tall, mature maple trees at north west corner of proposed 101 guest room building: <br />A. Excavation for the fire lane may cause failure of these trees as big leaf maples are <br />intolerant of fill, and the roots are relatively shallow, within approximately 30" of the <br />surface. Death of roots due to cutting and compaction during and following fire lane <br />construction may lead to death of the trees. Trees can fall over from construction <br />damage to root systems, without showing decline in the foliage. Therefore, removal <br />of the four trees in the zone should be seriously considered: <br />These three trees have root systems already compromised by nearly half their <br />root systems being under pavement, and were probably permanently reduced in <br />amount during excavation and compacted substrate for that pavement. <br />a. The southern most tree appears to be in decline as a result of ivy blocking <br />sunlight to a significant portion of the summer foliage. <br />b. The next tree to the north is a double stemmed co-dominant tree with twin 13" <br />leaders sharing the same root crown and root system. This situation provides <br />for a condition rating of "poor", because all codominant stems fail, the tree splits <br />eventually. There is a universal agreement that trees with codominant stems <br />should not remain in heavily used sites. <br />c. The next tree is immediately north, almost touching the tree described in #3. <br />This tree has two 18" codominant stems that have grown together for the first <br />eight feet above the ground. This makes for a hazardous situation as there will <br />be included bark between the two stems which absolutely weakens the entire <br />tree. <br />d. The trunk of the northern big maple leans significantly towards the foot print of <br />the new building. If this tree were to fail for any reason, the large codominant <br />lateral leaders above the trunk would hit the new building. <br />B. In the event that the above trees cannot be removed, Here is the protection plan: <br />1. Minimize compaction by limiting construction traffic as long as possible with <br />construction fencing to be installed between the tree trunks and excavation, <br />