AP Power Upgrade Tree Removal compressedMay 8, 2024
Community Development Department 10300 Torre Avenue Cupertino, CA
95014
SUBJECT: ARBORIST REPORT FOR PROPERTY AT One Apple Parkway
Cupertino, CA 95014.
This arborist report includes the observations and assessment of forty-three (43)
protected trees growing in a landscape area on the southeast corner of the
Apple Park Campus, adjacent to HWY 280 and Calabasas Creek. The site was
visited on Thursday, April 20, 2024.
Summary and Background
In early April 2024, I was asked to inspect 43 trees and provide professional opinions on
their health and condi;on. The area iden;fied in this report is the future site of the
Apple Park power upgrade, where electrical equipment will be housed. The project is
being installed with a minimal amount of space. The project extends along the 280 on
the south side of Apple Park. Great care has been taken to affect as few trees and
landscapes as possible. Unfortunately, the area covered in this report requires the
removal of all trees and landscape plan;ngs to house the new electrical equipment.
Assignment
It was my assignment to:
Inspect and assess 43 trees in the property’s southeast corner.
Make recommenda;ons for each tree according to overall tree health and
structure.
Limits of the Assignment
The assessments of these trees were based solely on my visual observa;ons from the
ground during the site inspec;ons and the context provided by the Apple Landscape
Team. I did not climb the trees, nor was any invasive equipment used for the
assessment. Consequently, the trees may have had underground or internal defects that
were not detectable by visual inspec;on.
Observations: The site was visited on Thursday, April 20, 2024.
The tools used were a diameter tape and a screwdriver as a probe. Crown
height and radius were estimated. The maps forty-three (43) trees were
measured for trunk diameter at approximately 4.5 feet above grade with a
diameter tape. Trees were assessed and rated for health structure and overall
condition, considering branch
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structure, decay, leaf quality, vitality, dieback, lean, and other issues affecting the
trees' condition.
The tree health condition rating was determined by observing the tree foliage, twig
growth, leaf density, and dead branches. The structure rating was determined by
observing branch attachment, crotch structure, trunk flare, surface roots, decay,
insects and diseases, growth habits, and physical damage. The overall condition
combines the health and the structure ratings based on the most significant
conditions.
Observa3ons, Discussion, and Conclusions
Each tree was assessed visually to determine its approximate height and canopy spread, and
its trunk diameter (DBH) was measured at breast height (4.5 feet) using an arborist diameter
tape. Then, each tree was examined and then rated based on its health and structure
according to the following “Tree Ra;ngs Table.”
Ra;ng Health Structure
Good excellent/vigorous flawless
Fair/good no significant health concerns very stable
Fair showing ini;al or temporary
disease, pests, or lack of vitality.
measures should be taken to
improve health and appearance.
rou;ne maintenance needed such as
pruning or end weight reduc;on as tree
grows
Fair/Poor in decline, significant health
issues
significant structural weakness(es),
mi;ga;on needed, mi;ga;on may or
may not preserve the tree
Poor dead or near dead hazard
Generally speaking, all trees have good vitality and are grown well, which is typical of
the species. The 43 trees are located in the project area. The species makeup is 21
Aesculus californica (California Buckeye), 15 Quercus agrifolia (Coastal Live Oak), 1
Quercus lobata (Valley Oak), 1 Platanus racemosa Roberts (California sycamore), 1
Platanus x acerifolia (London Plane), 1 Quercus virginiana (Southern Live Oak), and 3
Quercus rugosa shrub form (Neat Leaf Oak).
Discussion: The necessity for removal stems from changing the use at the location
rather than the tree's health. A power upgrade is required for Apple Park, and the
available space is minimal. The trees must be removed to make space for the new
electrical equipment.
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Fig 1 Site Plan
Conclusion: The 43 trees are located in the project area: 21 Aesculus californica
(California Buckeye), 15 Quercus agrifolia (Coastal Live Oak), 1 Qurecus lobata
(Valley Oak), 1 Platanus racemosa Roberts (California sycamore), 1 Platanus x
acerifolia (London Plane), 1 Quercus virginiana (Southern Live Oak), 3 Quercus
rugosa shrub form (Neat leaf oak) must be removed to develop a maintainable
power supply for Apple Park
Mitigation: Plant one 24 box of like species for each tree removed in the same
general area of the campus to compensate for the loss of removed trees (Fig 4
and 5). There are 43 trees to be replaced.
Tyson Carroll
PLA #5803, LEED AP, Certified Arborist WE 10179A
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Fig 2 Site Plan Area of Work
Fig 3 Tree location map
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Fig 4 Tree mitigation map. Blue dots represent mitigation trees to be planted.
Fig 5 Tree mitigation map. Blue dots represent mitigation trees to be planted.
Tree mitigation area
with tree marked in
blue.
Tree mitigation area
with tree marked in
blue.
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ID 930. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 963. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 965. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 967 Quercus agrifolia ) Tree
health and vitality is good.
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ID 970. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 971. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 972. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 973. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 974. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 977. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 980. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 981. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 983. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 984 Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 995. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 1008. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 1009. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 1010. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 7129. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 7266. Aesculus californica
(California Buckeye) Tree health and
vitality is good.
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ID 927 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 928 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 964 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 966 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 975 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 976 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 978 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 979 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 985 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 987 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 988 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 991 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 993 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 1007 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 7130 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 986 Platanus racemosa Roberts
(California sycamore) Tree health and
vitality is good.
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ID 19698 Platanus x acerifolia
(London Plane) Tree health and
vitality is good.
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ID 987 Quercus agrifolia (Coastal
Live Oak) Tree health and vitality is
good.
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ID 969 Quercus lobata (Valley Oak)
Tree health and vitality is good.
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ID 957 Quercus rugosa shrub form
(Neat leaf oak) Tree health and
vitality is good.
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ID 958 Quercus rugosa shrub form
(Neat leaf oak) Tree health and
vitality is good.
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ID 959 Quercus rugosa shrub form
(Neat leaf oak) Tree health and
vitality is good.
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ID 961 Quercus virginiana (Southern
Live Oak) Tree health and vitality is
good.
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