|
Arborist Report—Gudaitis Residence, Pleasanton Page 8
<br /> January 19, 2021
<br /> • Trees#71 and 85-89 are growing along the eastern property line. These six trees will
<br /> impacted by construction of a planned 12"storm drain line running north from a new drain
<br /> inlet at the north side of Lot 3 up to a new connection on Sycamore Road. The proposed
<br /> drain line appears to be 20-25 feet to the west of Trees#71 and 85-88 (depending upon
<br /> actual width of trench). I expect impacts to the trees to be moderate. The drain line will
<br /> be closer to coast live oak#89, within approximately 12-15 feet of its trunk, possibly within
<br /> its dripline. Impacts to this tree may be significant. I recommend careful excavation along
<br /> the length of this drain line to preserve tree roots, and hand excavation only in the root
<br /> zone of Tree#89.
<br /> Estimate of Value
<br /> The City of Pleasanton requires establishing the value of all assessed trees. To accomplish this, I
<br /> used the standard methods found in Guide for Plant Appraisal, 10th edition (published in 2018 by
<br /> the International Society of Arboriculture, Champaign IL). In addition, I referred to Species
<br /> Classification and Group Assignment(2004), a publication of the Western Chapter of the
<br /> International Society of Arboriculture. These two documents outline the methods employed in
<br /> estimating tree value.
<br /> The reproduction cost of landscape trees is based upon three factors: size, condition and
<br /> functional limitations and external limitations. Size is measured as trunk diameter, normally 54
<br /> inches above grade. Condition reflects the health and structural integrity of the individual, as
<br /> noted in the Tree Assessment. Functional limitations consider the interaction of the tree with its
<br /> planting site currently and for the foreseeable future. I did not identify any external limitations at
<br /> this site.
<br /> The estimate of value for the 41 trees assessed in this report is $89,350. The value of the 20 trees
<br /> being removed is$15,050. The value of the 20 trees that can potentially be preserved is $74,300.
<br /> The estimated value of each tree is shown in the Tree Appraisal Exhibit.
<br /> HortScience 1 Bartlett Consulting, Div,',un:; The F.A.Bartlett Tree Expert Company
<br /> to be preserved will depend on the care with which work is
<br /> performed around the trees and all parties committing to the Tree Preservation Guidelines (see
<br /> page 9).
<br /> • Coast redwoods#75-84 are growing behind a property line wall in the neighbor's yard to
<br /> the west; construction impacts to these trees are expected to be minimal.
<br /> • Trees#72 and 73, on the south side of the existing house, are also expected to
<br /> experience minor to no impacts.
<br /> • Impacts to off-site coast live oak#67 will be moderate to significant, because part of its
<br /> canopy overhangs the area where the ADU unit will be constructed, close to the northern
<br /> property line of that lot. In addition, it is located downhill from the demolition and grading
<br /> area of the new lots, so there is a potential for root loss and impacts from excavation and
<br /> altered drainage patterns on the subject property.
<br /> • The building on the proposed Lot 3 appears close to off-site California black walnut#68.
<br /> The tree leans south and is in poor condition. It will likely be adversely affected by the
<br /> demolition and grading, I recommend monitoring of impacts during construction. The
<br /> Project Arborist may recommend removal based on the observations in the field so that it
<br /> does not become a safety hazard.
<br /> Ho+i.Science Bartlett Consulting.Divisions of The F.A. Bartlett Tree Expert Company
<br /> 11
<br /> t .. ,.$ , ,...",,,t1:,. -4, ' '?r!'• '. .#e di •uj' 1; 0:11 11
<br /> tr... za. cli• ,.,... . 126* e:t4,104.,- z FM ,::2.510 6.K.44ve ..r• „n•et.' .r---3 7-
<br /> A.
<br /> L.0 16.o6• •
<br /> "- ,...iaraf--LEL. I i-LI.ZliCe ottD•14' '.:01$01"-
<br /> •* fl
<br /> "Z S A f 3 . OMOM4 44
<br /> CD
<br /> . .
<br /> i
<br /> Ser
<br /> . V
<br /> •C 4- . ... .
<br /> 41,*-ni t 1101 1444 t ts k t rii -' .c:;.0 PAR C E i 7 ; _1
<br /> 4..'•
<br /> PARCEL P.1
<br /> I Cr.510 ...
<br /> k W4 ill
<br /> •f:
<br /> y Its
<br /> PM
<br /> Ii; 1
<br /> rA RiIi_ E3 1j 1. ..),, -"TT.)"NI ;:.'.f7.•![....? o , 1 i.1 .. .. 5
<br /> t V Vi
<br /> • )
<br /> RECOrIDERS MEMO ---.}
<br /> LENBILITY FOR NICPORt,ING MD
<br /> CPPY1')G tifh•APSFACrOry Pi .1 POHTION
<br /> nt 71.IC I 1-.. t III. 1,1 ll' ,, ..• ",-,-,...•... ft
<br />
|