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Tree Report, Trinity Lutheran Church WMB Architects, June 2006 HortScience, Inc. Page 4 ^ Species response There is a wide variation in the response of individual species to construction impacts and changes in the environment. In our experience, English walnut is sensitive to root loss, while Shamel ash is tolerant of site disturbance. ^ Tree age and longevity Old trees, while having significant emotional and aesthetic appeal, have limited physiological capacity to adjust to an altered environment. Young trees are better able to generate new tissue and respond to change. ^ Invasiveness Trees with the potential to invade native habitats, reproduce rapidly, and grow in sub- optimal environments are considered invasive. Species with these qualities may alter the functional and aesthetic qualities of the habitats they invade. Each on-site tree was rated for suitability for preservation based upon its age, health, structural condition and ability to safely coexist within a development environment (Table 2). Off-site trees were not rated for suitability for preservation. Table 2: Tree Suitability for Preservation Good These are trees with good health and structural stability that have the potential for longevity at the site. Twenty (20) on-site trees were of good suitability for preservation. Tree No. Species Diameter (in.l 429 Ca. sycamore 7 430 Ca. sycamore 7 431 Blue Atlas cedar 7 432 Blue Atlas cedar 6,4 433 Blue Atlas cedar 6,4 434 Mayten 8,5 436 Sweet gum 7 438 Coast redwood 11 439 Coast redwood 13 442 Hollywood juniper 13 444 Deodarcedar 6 445 Deodarcedar 7 446 Deodarcedar 7 447 Blue Atlas cedar 6 449 Blue Atlas cedar 6 450 Shamel ash 24 451 Shamel ash 19 452 Shamel ash 15 455 Valley oak 15 459 Blue atlas cedar 6.3 (Continued, next page)