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0 0 <br /> Preliminary Arborist Report.Ponderosa Homes HortScience.Inc. <br /> Valley Trails,Pleasanton Page 3 <br /> The remaining four species were represented by single individuals,including: <br /> • Coast live oak#234 was located on the southern property line. It was mature,at 27'in <br /> diameter and was in good condition,with a full crown(Photo 2). <br /> • Chinese elm#245 was located just off-site along the northern boundary. It was semi- <br /> mature,with two trunks estimated at 15"and 13'in diameter. It was in good condition and <br /> the soulhem stem extended approximately 25'over the fence and onto the development <br /> site. <br /> • California pepper#246 was young,with multiple trunks measuring 4"to 7'in diameter. II <br /> was located adjacent to the fence on the northern boundary of the site. It had fair structure <br /> and was in good condition. <br /> • Silver maple#247 was located just off-site along the northern boundary. It was mature and <br /> estimated at 20"in diameter. The tree had been topped at some point in the past and was <br /> in fair condition. Portions of its canopy extended approximately 25'over the fence and <br /> onto the development site. <br /> Average tree condition was good,with 13 trees in that category,or 52%of the population. Ten(10) <br /> trees,or 40%were in fair condition and two(2)trees were in poor. <br /> The City of Pleasanton defines a Heritage trees as having a trunk diameter of 18'or greater or a <br /> height of 35'or more For trees with more than one stem,trunk diameter is determined by adding <br /> together the 2 largest stems. Using these criteria,six(6)of the trees assessed at the Valley Trails <br /> site qualified as Heritage,including#231,234,and 244-247. <br /> Table 1. Condition ratings and frequency of occurrence of trees. <br /> Valley Trails,Pleasanton CA. <br /> Common Name Scientific Name Condition Rating No.of <br /> Poor Fair Good trees <br /> (1-2) (3) (4-5) <br /> Silver maple Acer saccharinum - 1 - 1 <br /> London plane Platanus x hispanica - - 3 3 <br /> Callery pear Pyres calleryana - 1 5 6 <br /> Coast live oak Quercus agrifolia - - 1 1 <br /> Calif.pepper Schinus molle - - 1 1 <br /> Coast redwood Sequoia sempervirens 2 8 2 12 <br /> Chinese elm Litmus parvifotia - - 1 1 <br /> Total 2 10 13 25 <br /> 8% 40% 52% 100% <br />