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Tree Report, Trinity Lutheran Church HortScience, Inc. WMB Architects, June 2006 Page 3 Table 1: Condition ratings and frequency of occurrence of trees. Common Name Scientific Name Condition Rating No. of Poor Fair Good Trees (1-2) (3) (4-5) Blue atlas cedar Cedrus atlantica 'Glauca' - - 6 6 Deodarcedar Cedrus deodara - - 4 4 Hackberry Celtisoccidentalis - - 1 1 Raywood ash Fraxinus oxycarpa 'Raywood' - 1 - 1 Shamel ash Fraxinus uhdei - - 3 3 English walnut Juglans regia - 1 - 1 Hollywood juniper Juniperus chinensis Kaizuka' - - 1 1 Privet Ligustrum lucidum - 1 - 1 Sweet gum Uquidambarstyracitlua - 2 1 3 Mayten Maytenus boaria - - 1 1 Ca. sycamore Platenus racemosa - - 2 2 London plane Platenus x acerifolia - 1 1 2 Almond Prunus dulcis 1 1 - 2 Valley oak Querous lobata - - 1 1 Arroyo willow Salix /asiolepis - - 1 1 Coast redwood Sequoia sempervirens - - 2 2 Chinese elm Ulmus parvifolia - - 1 1 Total 1 7 25 33 3% 21% 76% 100% Suitability for Preservation Before evaluating the impacts that will occur during development, it is important to consider the quality of the tree resource itself, and the potential for individual trees to function well over an extended length of time. Trees that are preserved on development sites must be carefully selected to make sure that they may survive development impacts, adapt to a new environment and perform well in the landscape. Our goal is to identify trees that have the potential for long-term health, structural stability and longevity. For trees growing in open fields, away from areas where people and property are present, structural defects and/or poor health presents a low risk of damage or injury if they fail However, we must be concerned about safety in use areas. Therefore, where development encroaches into existing plantings, we must consider their structural stability as well as their potential to grow and thrive in a new environment. Evaluation of suitability for preservation considers several factors: • Tree health Healthy, vigorous trees are better able to tolerate impacts such as root injury, demolition of existing structures, changes in soil grade and moisture, and soil compaction than are non-vigorous trees. • Structural integrity Trees with significant amounts of wood decay and other structural defects that cannot be corrected are likely to fail. Such trees should not be preserved in areas where damage to people or property is likely.