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Lear Wang
21524 Conradia Ct.
Cupertino CA 95014
Arborist Report
2938 Crocker Ave I Redwood City 194063
December 111h, 2018
Dear Mr. Wang,
As requested on December 7th 2018 1 visited the above site to inspect and comment on a Coast Lice oak
Tree (Quercus agrifolia) at front side of the property and your concern for the future health and safety
of this tree has prompted this visit.
Overview: The -Coast Live Oak Tree is 30' feet height, 25' canopy spread with 21" inches in diameter
measured a 54"inches above ground level. This tree is in a very poor structure condition showing a
V -crotch stems, it has been topped off in the past making this tree a potential hazardous to the home
owner and neighbor's properties.
www.'ctreecarelandscape.com I Contractor Lic # 998693 1 ISA # WE -9900A 650-995-7254
2938 Crocker Ave I Redwood City 194063
Double Top and/or "Y" Crotch: This is known as a V or U shaped crotch or double leader. These trees
can be a hazard. As 2 tops grow off the main trunk it can become a weak spot in the structure of the
tree. In a big wind can cause the one side of the double top to break off. Too much moisture can also
cause rot at location where the 2 top meet at the main trunk. In return causing rot and eventually will
Topping is the indiscriminate cutting of tree branches to stubs or to lateral branches that are not
enough to assume the terminal role. Topping is often used to reduce the size of a tree. Topping however
is not a viable method of height reduction and certainly does not reduce future risk. In fact, topping will
increase risk in the long term. Topping stresses trees, leads to decay, can lead to sunburn, lead to
www.ictreecarelandscape.com I Contractor Lic # 998693 1 ISA # WE -9900A 1650-995-7254
2938 Crocker Ave I Redwood City 194063
Site Observations: The Coast Live oak Tree is growing in clay soil conditions. There is no visible irrigation
system at this time. This tree it has too many over the surface roots that are causing several damages
by lifting the concrete patio making the surface uneven that can cause a person to trip and fall. With this
tree we cannot due any root pruning to add a root barrier due of their size and age; that type of
technique will only make more potential hazarduos the tree because roots suppport the tree and absorb
water.
www.'ctreecarelandscape.com I Contractor Lic # 998693 1 ISA # WE -9900A 650-995-7254
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Tree Removal Plan: Description of the Coast Live Oak Tree should be removed for hazardous issues
• Poor structure condition
• V -Crotch stems on the main trunk
• It has been topped off in the past
• It has many roots over the surface causing property damages
• This tree it represents a potential hazard to home owner and neighbors properties
Recommendations: The information included in this report is believed to be true and based on sound
Arboricultural principles and practices
• Remove the tree and stump to prevent any more future damages to the property
• After the removal: plant a new 24 inch box tree to comply with the City of Cupertino conditions
and regulations
• Replanting species: Deodar Cedar, Valley Oak, Coast Redwood or any other native similar
• Hire a professional tree trimming company that employs a Certified Arborist and contractor
licensed
• Call 811 USA North to have them mark any utility lines under ground before any stump removal
www.ictreecarelandscape.com I Contractor Lic # 998693 1 ISA # WE -9900A 1650-995-7254
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2938 Crocker Ave ( Redwood City I CA 94063
December 11`h, 2018
Summary
Thank you for calling on my services with your questions regarding your Coast Live Oak Tree at your
property. If you have any questions concerning this report or if I can be further service to you, please
call me at any time.
K4
Jhonatan Corado
Certified Arborist WE -9900A
Disclaimer all the recommendations in this report are Wised on sound and accepted Horticultural practices, the author cannot be held
responsible for the final project or Approval for removal.
www.jctreecs7rF landscag :coEt} Contractor I_ic M 998693 I ISA It WE -9900A 1650-995-7254