103-Attachment B.pdf
Submitted to:
Erin M. Cooke
Environmental Affairs Coordinator
City of Cupertino
10300 Torre Avenue
Cupertino, CA 95014
Prepared by:
David L. Babby
Registered Consulting Arborist #399
Board-Certified Master Arborist #WE-4001B
_________
November 1, 2010
David L. Babby, Registered Consulting Arborist November 1, 2010
i
David L. Babby, Registered Consulting ArboristNovember 1, 2010
I have been retained by the City of Cupertino to evaluate trees in connection with a solar
carport project being proposed at the following two sites in Cupertino:
Cupertino Civic Center, 10300 Torre Avenue.
Quinlan Community Center, 10185 N. Stelling Road.
Specific tasks performed for my review are as follows:
Identify each tree anticipated to potentially be impacted by the project.
Estimate each tree’s trunk diameter at 54 inches above grade or where appropriate
to best represent trunk size; diameters are rounded to the nearest inch.
Estimate each tree’s height and canopy spread.
Ascertain each tree’s health and structural integrity, and assign an overall condition
rating (e.g. good, fair or poor).
Rate each tree’s suitability for preservation (e.g. high, moderate or low).
Specify whether any of the trees are regarded as “protected trees” pursuant to the
Cupertino Municipal Code.
Assign tree numbers in a sequential pattern for each site, and show those numbers
on the aerial photographs derived from Google Earth; see Exhibits C and D.
Affix metal tags (round aluminum) with corresponding numbers to each trunk.
Obtain photographs; see can be viewed in Exhibits E and F.
Review Sheet PV 0.1 (PV Site Plan), dated 10/13/10, and address potential tree-
related impacts for the Cupertino Civic Center.
Provide measures to mitigate the removal of trees, as well as help avoid or mitigate
impacts to retained trees.
Prepare a written report containing the aforementioned information; this report has
been submitted as a PDF document via email.
Cupertino Solar Carport Project Page 1 of 10
City of Cupertino, California
David L. Babby, Registered Consulting ArboristNovember 1, 2010
Ninety-four (94) trees of five various species were inventoried at this site. They are
sequentially numbered as 1 thru 94, and the following table identifies their names,
numbers, counts and percentages:
% OF
NAMETREE NUMBER(S) COUNT TOTAL
blackwood acacia 24-39, 55, 78-94 3537%
Brazilian pepper tree 1, 3-5, 8-11, 15, 16 1011%
Chinese pistache 63-771516%
flowering pear 2, 6, 7, 12-14, 17-22, 56-62 1920%
river birch 40-541516%
Total94100%
Specific data recorded for each tree can be viewed in Exhibit A. A map showing their
locations are presented in Exhibit C, and photographs are provided in Exhibit E.
The site is populated predominantly by blackwood acacias that form a row along the
eastern (rear) property boundary, and serve as a screening element between the site and
neighboring single-family residential properties along Farallone Drive. Two groups of
these trees were inventoried for this report; one is comprised of trees #23 thru 39, which
would potentially affect solar access to the photovoltaic (PV) panels proposed for the City
Hall parking lot, while the other is comprised of trees#78 thru 94, which would
potentially be affect solar access to the PV panels proposed for the library’s rear parking
lot. The row of trees #23 thru 39 is relatively dense, whereas #78 thru 94 are scattered
Cupertino Solar Carport Project Page 2 of 10
City of Cupertino, California
David L. Babby, Registered Consulting ArboristNovember 1, 2010
with fairly wide spacing between trees. There is also one very small acacia, tree #55, in a
finger-island adjacent to the sports field.
Theriver birch are comprised of trees #40 thru 54, and form a row within, to my
understanding, a bioswale behind the library.
TheChinese pistache align the northern and western (street) sections of the sports field.
Theflowering pears are located along the entrance to City Hall, the adjacent parking, and
along the west, northern section of the sports field.
TheBrazilian peppers are situated within islands in the parking lot for City Hall.
Noneof the inventoried trees are considered “protectedtrees” pursuant to Section
14.18.035 of the City Code.
Note that two trees north of #78, there is a dead tree that should be immediately removed.
Thirty-six (36) trees of three various species were inventoried at this site. They are
sequentially numbered as 1 thru 36, and the following table identifies their names,
numbers, counts and percentages:
% OF
NAMETREE NUMBER(S) COUNT TOTAL
5, 9, 10, 12-14, 17, 18, 22-
coast redwood 1644%
27, 29, 30
1-4, 7, 8, 11, 15, 16, 19-21,
flowering pear 1953%
28, 31-36
Japanese flowering
613%
cherry
Total36100%
Cupertino Solar Carport Project Page 3 of 10
City of Cupertino, California
David L. Babby, Registered Consulting ArboristNovember 1, 2010
Specific data recorded for each tree can be viewed in Exhibit B. A map showing their
locations are presented in Exhibit D, and photographs are provided in Exhibit F.
Noneof the trees are considered “protectedtrees” pursuant to Section 14.18.035 of the
City Code.
Each tree has been assigned a “high,” “moderate” or “low” suitability for preservation
rating as a method for cumulatively measuring and considering their physiological health,
structural integrity, location, size and species. A description of these ratings followed by
the assigned tree numbers, per site, is as follows:
High: They have a high potential of providing long-term contribution the site, appear in
good health, and contain seemingly stable structures.
Cupertino Civic Center (12 trees): trees #63, 65-70, 72 and 74-77.
Quinlan Community Center (15 trees): trees #5, 9, 10, 12-14, 17, 22-27, 29 and 30.
Moderate: They contribute to the site but not at seemingly significant levels. Their
longevity and contribution is less than those of high suitability, and more frequent care is
needed during their remaining life span.
Cupertino Civic Center (62 trees): trees #1, 3, 6-14, 16-18, 20-28, 30, 32-54, 56-62,
64, 71, 73, 83, 85, 88, 90 and 91.
Quinlan Community Center (19 trees): trees #1-4, 6, 7, 15, 16, 18-21, 28 and 31-36.
Cupertino Solar Carport Project Page 4 of 10
City of Cupertino, California
David L. Babby, Registered Consulting ArboristNovember 1, 2010
Low: These trees are predisposed to irreparable health problems and/or structural defects
that are expected to worsen regardless of measures employed.
Cupertino Civic Center (20 trees): trees #2, 4, 5, 15, 19, 29 (dead), 31, 55, 78-82,
84, 86, 87, 89 and 92-94.
Quinlan Community Center (two trees): trees #8 and 11.
Per Sheet PV 0.1, the following tree disposition at the Civic Center would result by
implementing the proposed design:
The following 55 trees would be removed to accommodate the proposed carports
and solar panels: #1 thru 17 and 40 thru 77.
Trees #23 thru 39 (blackwood acacias) would require height reduction or removal
of the tallest trees, as well as maintaining the height of remaining trees.
Trees #78 thru 94 (blackwood acacias) and #18 thru 22 (flowering pears) are
required to remain at their current height.
The plan does not identify specific trees that require height reduction or removal, and this
information is necessary to more fully identify potential impacts. Also, the height
tolerance of trees should be provided as there are cost impacts associated with frequent
pruning. Note that substantial height reduction, particularly of the acacias and pears,
would drastically increase growth rates and further increase maintenance (e.g. every six
months or year).
Cupertino Solar Carport Project Page 5 of 10
City of Cupertino, California
David L. Babby, Registered Consulting ArboristNovember 1, 2010
For the Civic Center,mitigationfor removing the 55 trees involves installing 58 trees of
24-inch box size (pursuant to Table A, Section 14.18.185 of the City Code). This amount
will increase should trees bordering the proposed carport locations require removal.
Appropriate species can be provided once locations for the new trees are identified.
ForQuinlan Community Center, the amount and size of replacements can be identified
once the project plans become developed, and trees to be removed are identified.
All new trees should be installed, including necessary irrigation, by an experienced state-
licensed landscape contractor or a professional tree company, and performed to
professional industry standards. They shall be planted prior to final inspection, double-
staked with rubber tree ties with no cross-brace, and all forms of irrigation be of a bubbler-
system placed on the soil surface and not in a sleeve (this should be shown on the
appropriate detail in the landscape plan).
Cupertino Solar Carport Project Page 6 of 10
City of Cupertino, California
David L. Babby, Registered Consulting ArboristNovember 1, 2010
Recommendations presented within this section are intended to serve as guidelines for
mitigating or avoiding impacts to trees being retained (including those not inventoried for
this report), and should be carefully followed and incorporated into the project plans. Note
that they are subject to revision upon review of any additional or revised plans, including
development of plans for the Quinlan Community Center, and I should be consulted in the
event any cannot be feasibly implemented.
1.Anote instructing the contractor(s) to refer to this report for tree protection measures
should be added to the project plans.
2.TheTree Protection Zone (hereinafter “TPZ”) of a particular tree should be
regarded as the unpaved area beneath its canopy (essentially, the planter area beneath
its canopy). The TPZ is where all demolition, trenching, soil scraping and grading (soil
cuts, overcut, fill, and finish-grading) shall be avoided except where approved. In
areas where this is not feasible, I should be consulted to review whether an alternative
TPZ would be acceptable.
3.Unless otherwise approved, all construction activities must be conducted beyond
TPZs, to include, but not limited to, the following: demolition, grading, stripping of
topsoil, trenching, equipment cleaning, stockpiling/dumping of materials, and
equipment/vehicle operation and parking. Tree trunks shall also not be used as winch
supports for moving or lifting heavy loads.
4.Anydigging or trenching within a TPZ shall be manually performed without the
use of heavy equipment or tractors operating on unpaved ground.
Cupertino Solar Carport Project Page 7 of 10
City of Cupertino, California
David L. Babby, Registered Consulting ArboristNovember 1, 2010
5.Thestaging area(s) and routes of access shall be established beyond TPZs.
6.The disposal of harmful products (such as cement, paint, chemicals, oil and gasoline)
is prohibited beneath canopies or anywhere on site that allows drainage beneath or near
TPZs.Herbicides should not be used with a TPZ; where used on site, they should be
labeled for safe use near trees.
7.Tree protective fencing, to remain intact throughout construction, should be installed
prior to demolition for the purpose of restricting access into a TPZ. It shall be
comprised of six-foot high chain link mounted on two-inch diameter steel posts that are
driven into the ground 24 inches and spaced apart by no more than approximately ten
feet. The location of fencing will vary for each tree, and should be addressed on a
case-by-case basis. I recommend the contractor reviews the fencing location and
placement with me two weeks prior to commencing work and installing fencing. Any
modification to or access within fencing should not occur without City’s consent.
8.To protect trees otherwise planned for retention, great care must be taken during
demolition to avoid excavation into existing planters of TPZs where roots are
expected to be found growing along the inside of existing curbs and gutters.
9.Trees with low-growing branches encroaching into the parking lot should be pruned
prior to mobilizing equipment. The work shall be performed in accordance with the
most recent ANSI standards, and by a California state-licensed tree service that has an
International Society of Arboriculture (ISA) certified arborist in a supervisory role.
The company selected should also carry General Liability and Worker’s Compensation
insurance, and shall abide by ANSI Z133.1-2006 (Safety Operations).
Cupertino Solar Carport Project Page 8 of 10
City of Cupertino, California
David L. Babby, Registered Consulting ArboristNovember 1, 2010
10.Theremoval of trees, including stump grinding (versus being pulled up with heavy
equipment, and inadvertently damaging roots of retained trees), situated beneath or
immediately adjacent to retained trees should be performed by a company described
above for pruning. A small tractor or other heavy equipment shall not be authorized to
operate or travel on unpaved areas within a TPZ.
11.Removalof existing shrubs and plants within a TPZ must be manually removed
versus being excavated.
12.Great care should be taken by construction personnel and any heavy equipment
operator to avoid damaging tree trunks, limbs and branches.
13.During any approved trenching or excavation within a TPZ, rootsencountered with
diameters less than two inches can be removed, but must be cleanly severed at right
angles to the direction of root growth. In doing so, sharp cutting tools (e.g. loppers or
handsaw) should be used, and the cuts must occur against the tree side of the trench.
The severed root end should be covered with backfill soil the same day.
14.Also during any approved trenching or excavation, rootsencountered with diameters
greater than two inches must not be cut or damaged, and covered with soil or
wrapped in moistened burlap within one-hour of being exposed.If burlap is used, it
should remain continually moist until the trench is backfilled.
15.Supplemental water during construction may benefit a trees’ health, and can be
reviewed on a case-by-case basis. For designated trees, watering should be performed
within the months of May thru October at two-week intervals, and at an approximate
rate of five gallons per each inch of trunk diameter.
Cupertino Solar Carport Project Page 9 of 10
City of Cupertino, California
David L. Babby, Registered Consulting ArboristNovember 1, 2010
16.The disposal of harmful products (such as cement, paint, chemicals, oil and gasoline) is
prohibited beneath canopies or anywhere on site that allows drainage beneath canopies.
Herbicides should not be used beneath the trees’ canopies; where used on site, they
should be labeled for safe use near trees.
Prepared By: ______________________ Date: November 1, 2010
David L. Babby
Registered Consulting Arborist #399
Board-Certified Master Arborist #WE-4001B
Cupertino Solar Carport Project Page 10 of 10
City of Cupertino, California
David L. Babby, Registered Consulting Arborist November 1, 2010
Cupertino Solar Carport Project
City of Cupertino, California
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
Brazilian pepper tree
(Schinus terebinthifolius)1120GoodModerateX
125100%50%
Comments:Buckling surrounding curb. Nearly fills in entire "finger" planter.
flowering pear
(Pyrus calleryana)28PoorLowX
2650%25%
Comments:Has dieback and significant decay at base.
Brazilian pepper tree
(Schinus terebinthifolius)615GoodModerateX
320100%50%
Comments:
Brazilian pepper tree
(Schinus terebinthifolius)1625PoorLowX
43050%25%
Comments:Canopy is sparse. Nearly outgrown finger planter. Past limb failure. Has a large girdling
root. Leaders form a weak attachment.
Brazilian pepper tree
(Schinus terebinthifolius)510PoorLowX
515100%25%
Comments:Has been previously shaped. Root decayed near base.
flowering pear
(Pyrus calleryana)515FairModerateX
62075%50%
Comments:Has dieback.
flowering pear
(Pyrus calleryana)610FairModerateX
7675%50%
Comments:
Brazilian pepper tree
(Schinus terebinthifolius)510GoodModerateX
810100%50%
Comments:Has been shaped.
Brazilian pepper tree
(Schinus terebinthifolius)712FairModerateX
92075%50%
Comments:Somewhat sparse.
Site: Cupertino Civic Center
Prepared for: City of Cupertino
1 of 11November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
Brazilian pepper tree
(Schinus terebinthifolius)915GoodModerateX
1020100%50%
Comments:Surrounding curb has buckled.
Brazilian pepper tree
(Schinus terebinthifolius)510FairModerateX
111575%25%
Comments:Has a wound where two leaders join; it is mostly closed, but may contain decay.
flowering pear
(Pyrus calleryana)28FairModerateX
12675%50%
Comments:
flowering pear
(Pyrus calleryana)415FairModerateX
131075%50%
Comments:
flowering pear
(Pyrus calleryana)520FairModerateX
141575%50%
Comments:
Brazilian pepper tree
(Schinus terebinthifolius)715FairLowX
152075%25%
Comments:Has a large wound along lower trunk.
Brazilian pepper tree
(Schinus terebinthifolius)810GoodModerateX
1620100%50%
Comments:
flowering pear
(Pyrus calleryana)1625FairModerateX
173575%50%
Comments:
flowering pear
(Pyrus calleryana)1430FairModerate
183050%50%
Comments:Overthinned.
Site: Cupertino Civic Center
Prepared for: City of Cupertino
2 of 11November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
flowering pear
(Pyrus calleryana)1425FairLow
192575%25%
Comments:Has a very large wound along trunk.
flowering pear
(Pyrus calleryana)1325FairModerate
202575%25%
Comments:Has been overthinned.
flowering pear
(Pyrus calleryana)1325FairModerate
212575%50%
Comments:Surrounding hardscape is significantly raised.
flowering pear
(Pyrus calleryana)1330FairModerate
222075%50%
Comments:Has been overthinned.
blackwood acacia
(Acacia melanoxylon)1740FairModerate
236050%50%
Comments:Sparse canopy.
blackwood acacia
(Acacia melanoxylon)1745FairModerate
243550%50%
Comments:Sparse canopy.
blackwood acacia
(Acacia melanoxylon)1935FairModerate
254575%50%
Comments:
blackwood acacia
(Acacia melanoxylon)1435FairModerate
262575%50%
Comments:
blackwood acacia
(Acacia melanoxylon)12, 8, 820FairModerate
273075%25%
Comments:
Site: Cupertino Civic Center
Prepared for: City of Cupertino
3 of 11November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
blackwood acacia
(Acacia melanoxylon)1825FairModerate
284075%50%
Comments:
blackwood acacia
Dead
(Acacia melanoxylon)1125Low
29-0%0%
Comments:Tree is DEAD.
blackwood acacia
(Acacia melanoxylon)1230FairModerate
303050%50%
Comments:
blackwood acacia
(Acacia melanoxylon)1435PoorLow
314025%25%
Comments:Dying.
blackwood acacia
(Acacia melanoxylon)1130FairModerate
322575%25%
Comments:Crowded growing conditions.
blackwood acacia
(Acacia melanoxylon)1135GoodModerate
3330100%50%
Comments:
blackwood acacia
(Acacia melanoxylon)1230FairModerate
343075%50%
Comments:
blackwood acacia
(Acacia melanoxylon)1430FairModerate
3530100%25%
Comments:
blackwood acacia
(Acacia melanoxylon)1625FairModerate
363075%25%
Comments:
Site: Cupertino Civic Center
Prepared for: City of Cupertino
4 of 11November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
blackwood acacia
(Acacia melanoxylon)1630GoodModerate
3730100%50%
Comments:
blackwood acacia
(Acacia melanoxylon)1230FairModerate
382575%25%
Comments:Two leaders form a weak attachment.
blackwood acacia
(Acacia melanoxylon)1225FairModerate
392575%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
4020100%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
4120100%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
4220100%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
4320100%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
4420100%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
4520100%50%
Comments:
Site: Cupertino Civic Center
Prepared for: City of Cupertino
5 of 11November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
river birch
(Betula nigra)620GoodModerateX
4620100%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
4720100%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
4820100%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
4920100%50%
Comments:
river birch
(Betula nigra)720GoodModerateX
5020100%50%
Comments:
river birch
(Betula nigra)720GoodModerateX
5120100%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
5220100%50%
Comments:
river birch
(Betula nigra)520GoodModerateX
5320100%50%
Comments:
river birch
(Betula nigra)620GoodModerateX
5420100%50%
Comments:
Site: Cupertino Civic Center
Prepared for: City of Cupertino
6 of 11November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
blackwood acacia
(Acacia melanoxylon)215GoodLowX
558100%50%
Comments:
flowering pear
(Pyrus calleryana)525GoodModerateX
5615100%50%
Comments:
flowering pear
(Pyrus calleryana)620FairModerateX
571575%50%
Comments:
flowering pear
(Pyrus calleryana)310FairModerateX
58675%50%
Comments:
flowering pear
(Pyrus calleryana)515FairModerateX
591575%50%
Comments:Wound at trunk's base.
flowering pear
(Pyrus calleryana)415FairModerateX
601075%50%
Comments:
flowering pear
(Pyrus calleryana)525FairModerateX
611550%50%
Comments:
flowering pear
(Pyrus calleryana)1530FairModerateX
623575%50%
Comments:Has been overthinned.
Chinese pistache
(Pistacia chinensis)820FairHighX
632075%50%
Comments:
Site: Cupertino Civic Center
Prepared for: City of Cupertino
7 of 11November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
Chinese pistache
(Pistacia chinensis)615FairModerateX
642575%50%
Comments:Possibly has a girdling root.
Chinese pistache
(Pistacia chinensis)615GoodHighX
6520100%50%
Comments:
Chinese pistache
(Pistacia chinensis)512GoodHighX
6620100%50%
Comments:
Chinese pistache
(Pistacia chinensis)720GoodHighX
6725100%50%
Comments:
Chinese pistache
(Pistacia chinensis)925FairHighX
683075%50%
Comments:
Chinese pistache
(Pistacia chinensis)816FairHighX
692575%50%
Comments:
Chinese pistache
(Pistacia chinensis)515FairHighX
702075%50%
Comments:
Chinese pistache
(Pistacia chinensis)1022FairModerateX
712575%50%
Comments:Sparse canopy.
Chinese pistache
(Pistacia chinensis)922FairHighX
7230100%50%
Comments:
Site: Cupertino Civic Center
Prepared for: City of Cupertino
8 of 11November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
Chinese pistache
(Pistacia chinensis)825FairModerateX
733075%25%
Comments:
Chinese pistache
(Pistacia chinensis)930FairHighX
743075%50%
Comments:
Chinese pistache
(Pistacia chinensis)925GoodHighX
7530100%50%
Comments:
Chinese pistache
(Pistacia chinensis)825GoodHighX
7630100%50%
Comments:
Chinese pistache
(Pistacia chinensis)730GoodHighX
7725100%50%
Comments:
blackwood acacia
(Acacia melanoxylon)1325PoorLow
782550%25%
Comments:Declining.
blackwood acacia
(Acacia melanoxylon)820PoorLow
792050%25%
Comments:Declining.
blackwood acacia
(Acacia melanoxylon)520FairLow
802075%25%
Comments:Significant decay at base.
blackwood acacia
(Acacia melanoxylon)1430FairLow
813075%25%
Comments:Significant decay at base.
Site: Cupertino Civic Center
Prepared for: City of Cupertino
9 of 11November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
blackwood acacia
(Acacia melanoxylon)525FairLow
821550%50%
Comments:
blackwood acacia
(Acacia melanoxylon)315FairModerate
83875%50%
Comments:
blackwood acacia
(Acacia melanoxylon)1025PoorLow
842050%25%
Comments:Has significant decay.
blackwood acacia
(Acacia melanoxylon)820FairModerate
852075%50%
Comments:
blackwood acacia
(Acacia melanoxylon)615FairLow
861575%25%
Comments:Decay at base.
blackwood acacia
(Acacia melanoxylon)515FairLow
8710100%25%
Comments:Decay at base.
blackwood acacia
(Acacia melanoxylon)820FairModerate
882575%50%
Comments:
blackwood acacia
(Acacia melanoxylon)1125FairLow
893075%25%
Comments:Has very large wounds along trunk.
blackwood acacia
(Acacia melanoxylon)1530FairModerate
903575%25%
Comments:Adjacent to power pole.
Site: Cupertino Civic Center
Prepared for: City of Cupertino
10 of 11November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor/Dead)Suitability for Preservation (High/Moderate/Low)Requires Removal per Plan
blackwood acacia
(Acacia melanoxylon)822FairModerate
912075%50%
Comments:Possibly has a girdling root.
blackwood acacia
(Acacia melanoxylon)310PoorLow
92650%0%
Comments:Trunk is cracked.
blackwood acacia
(Acacia melanoxylon)1025FairLow
932075%25%
Comments:Decay at base.
blackwood acacia
(Acacia melanoxylon)820PoorLow
942025%50%
Comments:Decay at base. Canopy is very sparse.
Site: Cupertino Civic Center
Prepared for: City of Cupertino
11 of 11November 1, 2010
Prepared by: David L. Babby
David L. Babby, Registered Consulting Arborist November 1, 2010
Cupertino Solar Carport Project
City of Cupertino, California
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor)Suitability for Preservation (High/Moderate/Low)
flowering pear
(Pyrus calleryana)820FairModerate
12575%50%
Comments:
flowering pear
(Pyrus calleryana)920FairModerate
23075%50%
Comments:
flowering pear
(Pyrus calleryana)1330FairModerate
335100%25%
Comments:Large wounds at trunk's base and along surfaced, major anchor roots.
flowering pear
(Pyrus calleryana)1030FairModerate
43075%25%
Comments:Crowded growing conditions.
coast redwood
(Sequoia sempervirens)1855GoodHigh
525100%75%
Comments:
Japanese flowering cherry
(Prunus serrulata)515FairModerate
61575%50%
Comments:Crowded growing conditions.
flowering pear
(Pyrus calleryana)1430FairModerate
74075%25%
Comments:
flowering pear
(Pyrus calleryana)1330FairLow
84075%25%
Comments:Large wound where two of three leaders originate. Has a girdling root.
coast redwood
(Sequoia sempervirens)1950GoodHigh
925100%75%
Comments:
Site: Quinlan Community Center
Prepared for: City of Cupertino
1 of 4November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor)Suitability for Preservation (High/Moderate/Low)
coast redwood
(Sequoia sempervirens)1850GoodHigh
1025100%75%
Comments:
flowering pear
(Pyrus calleryana)1025FairLow
112075%25%
Comments:Has a large wound at base and poor structure.
coast redwood
(Sequoia sempervirens)1445GoodHigh
1225100%75%
Comments:
coast redwood
(Sequoia sempervirens)1745GoodHigh
1325100%75%
Comments:
coast redwood
(Sequoia sempervirens)1845GoodHigh
1425100%75%
Comments:
flowering pear
(Pyrus calleryana)720FairModerate
152550%50%
Comments:
flowering pear
(Pyrus calleryana)820FairModerate
162575%50%
Comments:
coast redwood
(Sequoia sempervirens)1635GoodHigh
1725100%75%
Comments:
coast redwood
(Sequoia sempervirens)1230FairModerate
1820100%25%
Comments:Possibly has a girdling root.
Site: Quinlan Community Center
Prepared for: City of Cupertino
2 of 4November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor)Suitability for Preservation (High/Moderate/Low)
flowering pear
(Pyrus calleryana)1325FairModerate
1930100%25%
Comments:
flowering pear
(Pyrus calleryana)1222FairModerate
2030100%25%
Comments:
flowering pear
(Pyrus calleryana)1320FairModerate
213575%25%
Comments:Has a partial girdling root.
coast redwood
(Sequoia sempervirens)1750GoodHigh
2225100%75%
Comments:
coast redwood
(Sequoia sempervirens)1445GoodHigh
2325100%75%
Comments:
coast redwood
(Sequoia sempervirens)1645GoodHigh
2425100%75%
Comments:
coast redwood
(Sequoia sempervirens)1845GoodHigh
2525100%75%
Comments:
coast redwood
(Sequoia sempervirens)2045GoodHigh
2625100%75%
Comments:
coast redwood
(Sequoia sempervirens)1545GoodHigh
2725100%75%
Comments:
Site: Quinlan Community Center
Prepared for: City of Cupertino
3 of 4November 1, 2010
Prepared by: David L. Babby
TREE INVENTORY TABLE
nopy
TREE
NO.TREE NAME
Trunk Diameter (in.) Estimated Tree Height (ft.)Estimated CaSpread (diameter in ft.)Health Condition (100%=Best, 0%=Worst)Structural Integrity (100%=Best,
0%=Worst)Overall Condition (Good/Fair/Poor)Suitability for Preservation (High/Moderate/Low)
flowering pear
(Pyrus calleryana)1025FairModerate
283075%25%
Comments:Large wound at base.
coast redwood
(Sequoia sempervirens)1950GoodHigh
2925100%75%
Comments:
coast redwood
(Sequoia sempervirens)2150GoodHigh
3025100%75%
Comments:
flowering pear
(Pyrus calleryana)1325GoodModerate
3135100%50%
Comments:
flowering pear
(Pyrus calleryana)1020FairModerate
323075%50%
Comments:
flowering pear
(Pyrus calleryana)715FairModerate
332075%50%
Comments:
flowering pear
(Pyrus calleryana)618FairModerate
342075%50%
Comments:
flowering pear
(Pyrus calleryana)620FairModerate
352050%50%
Comments:
flowering pear
(Pyrus calleryana)615FairModerate
361575%50%
Comments:
Site: Quinlan Community Center
Prepared for: City of Cupertino
4 of 4November 1, 2010
Prepared by: David L. Babby
David L. Babby, Registered Consulting Arborist November 1, 2010
Cupertino Solar Carport Project
City of Cupertino, California
David L. Babby, Registered Consulting Arborist November 1, 2010
Cupertino Solar Carport Project
City of Cupertino, California
David L. Babby, Registered Consulting Arborist November 1, 2010
Cupertino Solar Carport Project
City of Cupertino, California
November 1, 2010
Page E-1
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November 1, 2010
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David L. Babby, Registered Consulting Arborist November 1, 2010
Cupertino Solar Carport Project
City of Cupertino, California
November 1, 2010
Page F-1
David L. Babby, Registered Consulting ArboristQuinlan Community Center City of Cupertino, California
November 1, 2010
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Page F-4
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