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L <br />Tree Inspection <br />• <br />To develop an accurate picture of tree health and condition, information <br />must be gathered about the multiple, changeable, factors which influence tree <br />vitality and stability. Vital, healthy tree growth is the result of a complex <br />association of internal and external influences and to consider each tree as an <br />isolated entity is to fall short in understanding the whole picture. As a practical <br />matter, information must be gathered and structured in the best way to <br />communicate the results of the observations and to impart any recommendations <br />for treatment. <br />Individual tree inspection begins <br />at ground level; tree genus and species <br />is determined and soil quality, rooting <br />conditions, soil level, irrigation and <br />drainage characteristics are observed. <br />Soil is a living micro-system that relies <br />on an active working relationship <br />between structural and living organic <br />components. In an urban setting the <br />structural condition of the soil is most <br />commonly adversely affected. <br />Alterations to physical soil structure will <br />have an effect the functions of the <br />living soil components. <br />The quality of the soil may be assessed in its ability to contain and <br />disperse available moisture and the level of soil compaction may be tested to <br />evaluate the aeration capacity of the soil. Some soil types are easily compacted <br />and although they are high in nutrient quantity, little of that nutrient quality is <br />available to the growing tree. Compact soils also cause problems by restricting <br />the trees ability to discharge the gasses produced as part of the growth cycle. <br />The visible parts of the tree, the trunk, branches and leaves live in balance <br />with the unseen roots. Damage to the soil leads to inhibited root growth and <br />Villas at Glenwood Terrace Tree Risk Assessment Robert W. Williams Consulting Arborist 2 <br />