arborist report_1.pdfJuly 201h 2016
Mr. Vic Pro sak
IAN GEDDES
AND ASSOCIATES
ARBORICULTURAL' CONSULTING
ACCO Management Co.
130 E. Dana St.
Mountain View, CA 94041
Re: Pine Tree
Glenbrook Apartments
10100 Mary Avenue
Cupertino, CA 95014
Dear Vic,
P.O. Box 2962, Saratoga, California 95070
(408) 379-8011 • (888) DR TREES
Fax (408) 374-8262
www.drtrees.com
Thank you for the opportunity to become involved in your tree related issue. You
have asked for an opinion with regard to rectification of a problem you believe to be
caused by the roots of a large tree.
The tree in question is a mature Monterey Pine measuring 32 inches in diameter. It
achieves a height of approximately 55 feet, and has a similar canopy spread. From
the standpoint of physiological health it can be considered moderate, suffering form
drought stress. Structurally, again it is moderate; having one large lateral limb with
a "V" shaped (and thus suspect) attachment that presently grows over a portion of
the building.
As a mature representative of it's species, it is currently vulnerable to several
drought related invasive insects and other pathogens, and its future longevity due to
these factors is at risk.
Nevertheless, it continues to grow, utilizing whatever irrigation, and sub -surface
moisture water that it can, and if this water proves sufficient, several years of
potential growth are possible.
The tree grows approximately 48 inches from the concrete patio slab of unit 28.
Its roots have penetrated beneath the slab causing cracking, and an upheaval of the
entire slab, so much so that rainwater is now directed towards, and not away from
the building and the sliding glass door, as engineered.
A
\CA
AMERICAN S�IETY OF
CONSULTING ARB RISTS
Mr. Vic Prosaic
7/20/16
Page 2
Your client has indicated that the tenant cannot now successfully open the sliding
glass door as the frame is beginning to buckle. His opinion is that roots from the tree
are causal of the actual lifting of the foundation beneath the door. I would concur
that this is indeed the most likely cause of this damage. It is certainly causal of the
patio damage.
As long as the tree remains, the problem will exist, and be exacerbated by root
development. Severance and removal of the offending roots to remedy the problems
are not reasonable options in this case. The extent of root cutting required would
leave a dangerously unstable tree, the failure of which could damage property, and
at worst case scenario be a threat to life or limb.
Your approach of complete removal of the tree in order to complete repairs while
leaving the area safe is based upon sound reasoning, and one which I have no
compunction in endorsing. Indeed, it is my professional opinion that the tree should
be removed to allow repairs to the patio and building, while leaving tenants without
any future threat.
Attached are 5 photographs of the tree, documenting the damaged patio and its
proximity to the building. Please feel free to contact this office if you have any
further questions.
Yourp sincerely,
Am
lan%eddq�. ONDH(Arb), MIoD
ASCA Rbgisterd Consulting Arborist #308
WCISA Certified Arborist #0593
41
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