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DRAFT Arborist Report—Chashmawala Residence HortScience I Bartlett Consulting
<br /> 4108 Foothill Road, Pleasanton Page 4
<br /> Table 2: Tree suitability for preservation
<br /> 4108 Foothill Road, Pleasanton,CA
<br /> High These are trees with good health and structural stability that have the
<br /> potential for longevity at the site.
<br /> Tag# Species Diameter
<br /> 19 Coast live oak 37"
<br /> 33 Valley oak 32"
<br /> 34 Valley oak 31"
<br /> 39 Valley oak 33"
<br /> Moderate Trees in this category have fair health and/or structural defects that may be
<br /> abated with treatment. These trees require more intense management and
<br /> monitoring, and may have shorter life-spans than those in the"high"
<br /> category. Two trees evaluated at the site were included in this category.
<br /> Tag# Species Diameter
<br /> 18 Valley oak 26"
<br /> 31 Valley oak 24"
<br /> 32 Valley oak 32"
<br /> 36 Valley oak 25"
<br /> 38 Valley oak 34"
<br /> Low Trees in this category are in poor health or have significant defects in
<br /> structure that cannot be abated with treatment. These trees can be expected
<br /> to decline regardless of management. The species or individual tree may
<br /> possess either characteristics that are undesirable in landscape settings or
<br /> be unsuited for use areas.
<br /> Tag# Species Diameter
<br /> 20 Coast live oak 56"
<br /> 21 Valley oak 27"
<br /> 27 Valley oak 43"
<br /> Evaluation of Impacts and Recommendations
<br /> Appropriate tree retention develops a practical match between the location and intensity of
<br /> construction activities and the quality and health of trees. The Tree Assessment Form was the
<br /> reference point for tree health and condition. I referred to the Grading Plan, prepared by
<br /> Alexander and Associates (dated 2/28/19), to estimate the impacts to trees from the proposed
<br /> changes.
<br /> The plan proposes to construct a new house on the upper, northern portion of the property. A
<br /> driveway would be installed in the northeast corner of the lot, connecting to the existing road. A
<br /> bioretention area is proposed just downslope (south) of the new residence, with drain lines
<br /> running along the south and east side of the new residence and connecting to the existing road.
<br /> A series of retaining walls would be constructed along the north side of the driveway and
<br /> residence.
<br />tings for individual trees are provided in the Tree
<br /> Assessment Forms(see attachments).
<br /> We consider trees with good suitability for preservation to be the best candidates for preservation.
<br /> We do not recommend retention of trees with low suitability for preservation in areas where
<br /> people or property will be present. Retention of trees with moderate suitability for preservation
<br /> depends upon the intensity of proposed site changes.
<br /> be abated with treatment. The tree will require more intense
<br /> management and monitoring, and may have shorter life span than
<br /> those in 'high' category.
<br /> Low: Trees in poor health or with significant structural defects that cannot
<br /> be mitigated. Tree is expected to continue to decline, regardless of
<br /> treatment. The species or individual tree may have characteristics
<br /> that are undesirable for landscapes, and generally are unsuited for
<br /> use areas.
<br />sion
<br /> Page 11 of 12
<br /> Planning Commission
<br /> Page 6 of 12
<br />neer;
<br /> b. Show construction vehicles and equipment parking area, materials storage, temporary
<br /> fencing, construction trailer location, and construction contractors/workers parking
<br /> area.
<br /> P19-0059 Planning Commission
<br /> Page 5of12
<br />-0059 Planning Commission
<br /> Page 4 of 12
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<br /> Planning Division
<br /> , i i July 30,2019
<br /> FL£ NTON.
<br /> o 280 560 Feet
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