HomeMy WebLinkAboutArborist ReportProtected Tree Report:
Tree Survey, Encroachment,
Protection and Mitigation
1322 Loganrita Avenue
Arcadia, CA 91006
Prepared For: Twen Ma Architects
17200 Red Hill Ave.
Irvine, CA 92614
Tel: (626) 203-8125
Email: TwenMa@yahoo.com
Prepared By: Michael Crane
Arbor Care, Inc.
1660 E. Mountain St.
Pasadena, CA 91104
Tel/Fax: (626) 737-4007
Email: info@arborcareinc.net
November 2021
Table of Contents
Summaryof Data ................................................. 1
Summary of Findings ............................................. I
Project Location, Description & Tree Ordinance ........................ 2
Tree Survey ...................................................... 4
Tree Characteristics & Health Matrix ................................. 5
Construction Impact Matrix ......................................... 6
Field Observations and Design Analysis ................................ 7
Findings........................................................ 7
Further Recommendations .......................................... 7
Appendix A -Photos ............................................... 9
Appendix B - Protected Tree Construction Impact Guidelines .............. 11
Author's Certifications ............................................. 17
Certification of Performance ......................................... 18
Topographic Site Plan ........................................ Pocket at back
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
SUMMARY OF DATA
Total number of healthy Protected Trees on property including street trees
located in the adjacent public right-of-way area ..........................
Total number of off-site Protected Trees
with canopies (driplines) encroaching onto the property .................... 2
Total number of diseased/hazardous Protected Trees on site ................ 0
Total number of healthy Protected Trees to be preserved ................... 3
Total number of healthy Protected Trees to be removed ................... 0
Total number of Protected Trees that will be preserved, which will
be encroached by construction within dripline .......................... 1
Total number of Protected Trees with no dripline encroachments ........... 2
Total number of proposed mitigation trees to be planted on site .............. 0
SUMMARY of FINDINGS
The redevelopment of the property will require a modest amount of encroachment into the
dripline of the one Protected Tree located on site: a mature Canary Island Pine. The
encroachment will have a minimal impact because the vast majority of grading and construction
will occur within the footprint of the existing home's foundation, and the excavation will remain
at a tolerable distance from the trunk — equal to five times the trunk's diameter.
The design of the new home has a footprint similar to the one of the existing home. Impacts
from rootzone encroachments will be very minimal, as it is very unlikely that significant roots
will be encountered within the footprint of the existing foundation.
To minimize impacts a Tree Protection Zone shall be established, which will contain as much of
the dripline area as possible, while allowing for reasonable work space. A fence will be used to
define the protection zone and soil and the fence will remain in place throughout the project. All
excavation and other required work occurring within the established Tree Protection Zone shall
be monitored by the consultant.
1
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
PROJECT DESCRIPTION & TREE ORDINANCE
This aerial view (courtesy of Google Maps) has been illustrated to show the
approximate boundary lines (orange). The locations of the Protected Trees are
numbered in yellow.
The property consists of a one story single-family residence that appears to be in fair condition.
The home will be demolished and the property redeveloped into a two-story single-family home
with a basement.
The landscape is maintained and the woody plants and trees are in good to fair condition. The
Protected Trees appear to be in good health and structural conditions. The landscape will be
renovated and the Protected Trees will be incorporated into the new design.
2
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
City of Arcadia Tree Ordinance
Oaks, Sycamore, and many other tree species are Protected under the various tree
ordinances. Here is a summary of the tree protection laws.
On January 21, 1992 the City Council adopted Ordinance No. 1962 recognizing oak trees as significant aesthetic
and ecological resources and establishing criteria for the preservation of oak trees. The regulations (Chapter 7 of
the Arcadia Municipal Code) provide that the following oak trees shall not be removed, relocated, damaged, or
have their protected zones encroached upon unless an Oak Tree Permit is granted:
• Engelmann Oaks (Quercus engelmannii) or Coast Live Oak, California Live Oak (Quercus agrifolia)
which have a trunk diameter larger than four (4) inches measured at a point four and one half (4 %:) feet
above the crown root, or, two (2) or more trunks measuring three (3) inches each or greater in diameter,
measured at a point four and one half (4 %) feet above the crown root.
• Any other living oak tree with a trunk diameter larger than twelve (12) inches measured at a point four
and one half (4 %z) feet above the crown root, or, two (2) or more trunks measuring ten (10) inches each
or greater in diameter measured at a point four and one half (4 %:) feet above the crown root.
On March 3, 2015, the City Council adopted Ordinance No. 2323 amending the code to add Sycamore trees to the
list of City's Tree Preservation Regulations. The protected trees are Oak and Sycamore trees. Protected Sycamore
trees are defined as:
• Plantanus racemosa (Sycamore) with a trunk diameter larger than six (6) inches measured at a point four
and one-half (4!/2) feet above the root crown, or two (2) or more trunks measuring four (4) inches each or
greater in diameter, measured at a point four and one-half (4'/z) feet above the root crown.
On August 2, 2016, The City Council adopted Ordinance No. 2338 to add additional protected trees and unprotected
trees to the City's tree preservation regulations. In September, the City began protecting mature trees that are located
within a required front, side, street -side, or rear yard setback area that are either larger than 12 inches in diameter or
larger than 10 inches in diameter if there are multiple trunks.
Below is a list of the unprotected trees:
1. Fruit trees
2. Fraxinus uhdei (Shame) Ash)
3. Ficuses — Exception: Ficus macrophylla (Moreton Bay Fig)
4. Eucalyptus
5. Ailanthus altissima (Tree of Heaven)
6. Arecaceae (Pahn Tree)
7. Schinus terebinthifolius (Brazilian Pepper)
8. Ceratonia siliqua (Carob)
9. Betula pendula (European White Birch)
10. Grevillea robusta (Silk Oak)
11. Moms (Mulberry)
12. Acer saccharinum (Silver Maple)
13. Cupressus sempervirens (Italian cypress)
14. Populus Fremontii (Western Cottonwood)
15. Alnus rhombifolia (White Alder)
16. Populus trichocarpa (Black Cottonwood)
17. Populus `Highland' hybrid
18. Salix lasiolepis (Arroyo Willow)
19. Liquidambars (Sweet Gum)
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Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA 4440. November 2021
FIELD OBSERVATIONS & DESIGN ANALYSIS
Refer to Site Plan located in pocket at back of this report, and Photos in Appendix
A, page 9.
Analysis regarding rootzone impacts are based on the type of impact, e.g, soil
compaction, grading, and excavation; as well as the distance from the trunk that the
impacts will occur. It is commonly accepted among professional arborists that a distance
equal to three times a trunks diameter contains the structural roots responsible for
keeping the tree upright. This critical rootzone area is defined as the root plate. Beyond
the root plate the roots typically taper off into smaller, less significant sizes. These
smaller roots are usually two inches in diameter or smaller and make up the rootmass
responsible for water and nutrient uptake. Although roots of these sizes can be cut
without significantly impacting health and stability it is advised that no more than 30
percent of the rootmass within the dripline is severed. The bulk of the rootmass is
located within the top three feet of soil and root growth slows or halts when soil bulk
density exceeds 1.60 g/cm3 for most soils. More information regarding rootzone impacts
is provided in the Excavation and Root Pruning section of the Construction Impact
Guidelines, Appendix B.
Tree #1— 24" Canary Island Pine: Located in the northeast corner of the back yard.
The first floor foundation will be built 20 feet from the trunk. The basement will be
located as close as 16 feet, and excavation is expected to come within ten feet in the
southwest quadrant of the dripline. The tree had been topped at approximately 25 feet to
maintain clearance for high voltage power lines located above. Despite the regular
reduction pruning the tree appears to be in good health. The existing concrete block
walls on the north and east property lines will remain. No pruning is required to
complete the project. Typical landscape renovations will encroach.
Tree #6 —12" Fern Pine: Located off-site on the property to the north. No significant
excavation for construction will encroach. The concrete block wall located on the north
property line adjacent to the tree will remain. No pruning is required to complete the
project. Typical landscape renovations will encroach.
Tree #6 —14" Carrot Wood: Located off-site on the property to the north,
approximately 20 feet directly east of Tree #6. No significant excavation for construction
will encroach. The concrete block wall located on the north property line adjacent to the
tree will remain. No pruning is required to complete the project. Typical landscape
renovations will encroach.
7
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
FINDINGS
Excavation for the construction of the basement will encroach Tree #I in the
southwest quadrant of the dripline, but it will remain a distance equal to five times
the trunk's diameter away from the trunk. This is considered a tolerable distance
for trees such as Canary Island Pine that are moderately tolerant of root pruning,
when excavation occurs on only one side.
• The two off-site trees will not be encroached by any excavation or grading. The
existing concrete block wall near the trees will remain.
• No pruning is required on any tree to complete the project; however, Tree #1 has
been topped for utility line clearance.
RECOMMENDATIONS
As with many construction projects, soil compaction is the most preventable impact that
will need to be monitored in order to provide reliable protection and long-term
preservation of the trees. To prevent unnecessary soil compaction a protective fence
must be installed around the Protected Trees before any demolition occurs. The goal is to
enclose the largest possible amount of space underneath the tree so that the heavy
equipment required for demolition and construction can be routed away from root zones.
The recommended fence placements are drawn in dashed lines on the Site Plan of this
report. The main haul route for the demolition phase and into most of the construction
phase shall be the existing driveway, which is well clear of Tree #4.
• Prior to demolition the contractor and consulting arborist shall meet on site to
make sure a fence is properly placed and installed near Tree #1, and to review the
goals for the tree protection plan. The location of the protective fence is drawn
with a dashed line on the Site Plan included in this report.
• The Tree Protection Zone fence shall be at least four feet tall and constructed of
chain link fencing secured on metal posts.
• The removal of existing turfgrass and other vegetation near the Protected Tree
shall be done by hand. No rototilling or other deep cultivation or grading shall
occur within the driplines.
• The existing concrete block wall on the north property line, adjacent to the two
off-site Protected Trees (Trees #6, and #7) will remain; and the wall provides a
good and adequate Tree Protection Fence for these trees.
• Refer to the Construction Impact Guidelines in Appendix B for important general
preservation measures concerning the different elements of this project.
12
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
APPENDIX A —Photos Michael Crane, RCA #440. November 2021
ABOVE: Looking northeast at Tree #1 It has been topped and maintained at a
reduced height for powerline clearance. A non -protected Crape Myrtle (Tree
#4) is shown in the foreground. BELOW: Close-up of the trunk of Tree #1,
located in the northeast corner of the back yard. The block wall will remain.
a
r,
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
ABOVE: Looking northwest at at the two off-site trees (Trees #6 and #7).
No excavation or grading will encroach, and the wall will remain. BELOW:
Looking northeast at the propert from the corner of Loganrita and Standish.
10
r
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Logamita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
APPENDIX B - Protected Tree Construction Impact Guidelines
Size and Distribution of Tree Roots — Taken from Arboriculture. Inte rated
Management of Landscape Trees Shrubs and Vines. Harris, R.W., Clark, J.W., Matheny
N.P. Prentice Hall 2004.
Roots of most plants, including large trees, grow primarily in the top meter (3 ft) of soil
(see figure below). Most plants concentrate the majority of their small absorbing roots in
the upper 150 mm (6 in.) of soil if the surface is protected by a mulch or forest litter. In
the absence of a protective mulch, exposed bare soil can become so hot near the surface
that roots do not grow in the upper 200 to 250 mm (8 to 10 in.). Under forest and many
landscape situations, however, soil near the surface is most favorable for root growth. In
addition, roots tend to grow at about the same soil depth regardless of the slope of the soil
surface.
Although root growth is greatly influenced by soil conditions, individual roots seem to
have an inherent guidance mechanism. Large roots with vigorous tips usually grow
horizontally. Similar roots lateral to the large roots grow at many angles to the vertical,
and some grow up into the surface soil. However, few roots in a root system actually
grow down.
Depth I
In meters
0
0.5
1.0
1.5
FIGURE In mature trees, the taproot is either lost or reduced in size. The vast majority of the root system is
composed of horizontally oriented lateral roots.
11
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Logamita Ave., Arcadia, 91006
Michael Crane, RCA 4440. November 2021
The importance of soil
Soil supports and anchors tree roots and provides water, minerals and oxygen.
Furthermore, soil is a habitat for soil microorganisms that enhance root function. A soil's
ability to sustain tree growth is largely determined by its texture, structure (bulk density),
organic matter, water and mineral content, salinity, aeration, and soil -microbe abundance
and diversity.
Soil physical properties
Soil texture — the relative proportion of sand, silt and clay, is important because it affects
water — and nutrient -holding capacity, drainage and aeration (gaseous diffusion). Soil
structure is the arrangement of individual soil particles into clumps (aggregates). The net
result is the formulation of larger voids between the aggregates which serve as channels
for gaseous diffusion, movement of water and root penetration. Unfortunately, soil
aggregates are readily destroyed by activities that compact the soil (increase bulk
density). When this occurs, gaseous exchange, permeability, drainage and root growth
are restricted.
The influence of the organic matter content of soil properties is quiet significant. Its
decomposition by soil organisms releases substances that bind soil particles into larger
granules, which improves both soil aeration, and drainage. In essence, the breakdown of
organic matter improves water — and nutrient -holding capacity and reduces bulk density.
Furthermore, it is the primary source of nitrogen and a major source of nitrogen and a
major source of phosphorus and sulfur. Without organic matter soil organisms could not
survive and most biochemical processes in the soil would cease.
Soil aeration, the movement and the availability of oxygen, is determined by both soil
texture and structure. In general, compacted and finer soils, due to a higher proportion of
small pore spaces (micropores), tend to drain slowly and hold less air than coarser, sandy,
or well -structured find soils. Water retained in the small pores displaces oxygen and
inhibits gaseous diffusion.
The availability of soil water is largely determined by the size of the pore spaces between
the soil particles and the larger aggregates in which water is held. Most of the water in
the larger pore spaces drains readily due to gravitational forces. A relatively thin film of
water, which is readily available to plant roots, remains following drainage. Much of
water held within the smaller pore spaces resists uptake by plant roots because it is held
tightly on the soil surfaces.
Plant roots require an adequate supply of oxygen for development. Injury or dysfunction
results when oxygen availability drops below a critical level. Root respiration is the first
process to be restricted, followed by disruptions in growth, metabolism, nutrient and
water uptake, and photosynthesis. Furthermore, the accumulation of high levels of
carbon dioxide, produced by the roots during respiration can also impair root function.
Reduced soil aeration resulting from soil compaction, flooding, excess irrigation, or
12
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
impervious pavement favors the development of crown rot (Phytophthora root disease).
It also inhibits mycorrhizal fungi that enhance water and nutrient uptake and resist root
pathogens.
The forest floor under a canopy in most undeveloped forests and woodland settings is
typically covered by a layer of fallen leaves and other woody debris. It is usually cool,
shady, well-aerated, and relatively moist — conditions that favor normal root growth.
When the natural leaf litter is removed and when a tree's lower canopy is pruned up to
provide clearance, the absorbing roots in the upper few inches of the soil experience
higher soil temperatures and increased desiccation due to direct exposure to sunlight.
Minimizing the Effects of Construction and Development on Tree Root Systems
Activities that injure roots or adversely affect the root zone should be avoided or kept as
far from the trunk as possible. Design changes or alternative building practices that avoid
or minimize construction -related impacts should be considered and proposed when
applicable.
Soil Compaction
Soils are intentionally compacted under structures, sidewalks, reads, parking areas, and
load-bearing fill to prevent subsidence, and to prevent soil movement on slopes.
Although unintentional, soil within the root zone of trees is often compacted by
unrestricted foot traffic, parking of vehicles, operation of heavy equipment, and during
installation of fill. Compaction destroys the soil's natural porosity by eliminating much
of the air space contained within it. It leaves the soil hardm impenetrable and largely
unfavorable for root growth. The soil's natural porosity, which allows for water
movement and storage, gaseous exchange, and root penetration, is greatly reduced.
Consequently, root growth and tree health suffer. Soil compaction is best managed by
preventing it.
Bulk density is used to describe a soil's porosity, or the amount of space between soil
particles and aggregates. High bulk densities indicate a low percentage of total pore
space.
Pavement
Paving over the root systems of trees is another serious problem because it reduces the
gaseous diffusion and soil moisture. Most paving materials are relatively impervious to
water penetration and typically divert water away from a tree's root zone. Cracks and
expansion joints do, though, allow for some water infiltration into the soil below. Of
greater concern, is the loss of roots from excavation to achieve the required grade, and
the necessary compaction to prevent subsidence. Once the soil surface is compacted, a
base material is then added and compacted as well. With that done, the surface can then
be paved. Thus, pavement within the root zones of trees can damage roots and create
13
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
unfavorable soil conditions. One alternative to minimize pavement impacts is to consider
placing the pavement on the natural grade over a layer of minimally compacted base
material. To reduce sub -grade compaction, consider using reinforced concrete or asphalt
over a goetextile blanket to help stabilize the soil. On -grade patios or paving that covers
more than one-third of the tree protection zone (TPZ) should be constructed using
permeable materials that allow aeration and water penetration. Soil under permeable
surfaces should not be compacted to more than 80 percent.
Excavation and root pruning
Excavation within the root zones of trees should be avoided as much as possible. The
extent of root pruning (selective) or cutting (non-selective) should be based on the
species growth characteristics and adaptive traits, environmental conditions, age, health,
crown size, density, live crown ration and structural condition of the tree. The timing of
the root pruning or cutting is another important consideration. Moderate to severe root
loss during droughts or particularly hot periods can cause serious water -deficit injury or
death.
When root pruning/ cutting is unavoidable, roots should be pruned or cut as far from the
trunk as possible. Cutting roots on more than one side of a tree should also be avoided.
Root cutting extending more than half -way around a tree should generally be no closer
than about 10 times the trunk diameter. Recommended distances range from as little as 6
times trunk diameter (DBH) for young trees to 12 times trunk diameter for mature trees.
The size of the TPZ should, however, be increased for over mature and declining trees
and species that are sensitive to root loss.
The minimum distance from the trunk that roots can be cut on one side of the tree without
destabilizing it, is a distance equal to about three times the diameter (DBH) of the trunk.
Roots severed within that distance provide little or no structural support. Root pruning or
cutting distances from the trunk should be greater for trees that lean and/ or those
growing on shallow or wet soil.
In cases where the proposed grading will adversely affect trees designated for retention,
special attention should be given to proper root pruning and post -construction care for
injured trees. Where structural footings are required for foundations, retaining walls, etc.,
and roots larger than 2 inches in diameter will be impacted, consider design changes or
alternative building methods.
When excavation within 5 times trunk diameter is unavoidable, roots greater than 1 '/:
inches in diameter should be located prior to excavation and then pruned to avoid
unnecessary damage. Hand -digging or use of a hydraulic or pneumatic soil excavation
tool is the least disruptive way to locate roots for pruning. Although mechanical root
pruners make clean cuts, they are non-selective. A backhoe bucket, dozer blade or
trencher will typically pull, rip or shatter the larger root, causing additional damage
toward the tree. Once the roots that interfere with the structure being built, e.g.,
14
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
foundations, footings, retaining wall, curbs, etc., are exposed, they should then be cut
perpendicular to their long axis using a hand -saw, `carbide -tipped chainsaw' or sharp ax,
depending on size. Roots that are pruned in this manner typically regenerate new roots
from near the cut. Roots exposed by excavation should be protected from exposure to
sun and desiccation. Exposed roots that can not be covered with soil by the end of the
day should be covered with moistened burlap or similar material.
Roots can generally be cut in a non-selective manner when excavating near of beyond the
dripline. Ripped, splintered or fractured portions of roots however, should be re -cut. The
damaged portion should be removed using sharp tools. The cut should be flat across the
root with the adjacent bark intact. Wound dressings should not be applied to pruned or
damaged roots except when recommended for disease, insect or sprout control.
The best approach to avoid water -deficit injury following root loss during the growing
season is to provide ample irrigation. Irrigation should be considered prior to, during,
and after root pruning. Watering schedules should also consider local soil conditions,
climate, topography, time of year, species adaptability, extent of root pruning and tree
health. If possible, irrigate the tree 7 to 10 days prior to excavation so that there is an
adequate reservoir of soil water. Water can be delivered to large construction sites via
water -tank trucks and applied directly to affected trees or stored nearby in plastic tanks.
On relatively flat terrain, a 6 to 8 inch soil berm at the tree's dripline should be
constructed to act as a watering basin. On steep terrain, soaker hoses should be used.
They can be placed across the slope or spirally around the trunk, from about six feet away
to the dripline. In addition, a two to four inch layer of wood chip mulch should be
applied to as much of the root zone as possible to retard soil water loss.
Pruning foliage to compensate for root loss is not supported by scientific research and
likely to result in slower recovery. Fertilization to stimulate root growth is generally
unwarranted and may be counterproductive.
Trenching within the Tree Protection Zone
Trenching for underground utilities should be routed around the TPZ. When this is
unavoidable, trenching within the TPZ should be done by `hand' or using a pneumatic or
hydraulic soil excavation tool, carefully working around larger roots. Roots larger than
1 %: inches in diameter should not be cut. Dig below these roots to route utilities or
install drains. A combination of tools can also produce satisfactory results, for example,
a skillful backhoe operator under the arborist's supervision can dig down several inches
at a time and detect larger roots by `feel' (resistance). At that point, as assistant can
expose the root and dig around it. In this manner, the backhoe can then continue
extending the trench though the TPZ. Tunneling (boring) through the TPZ is the
preferable alternative. For most large trees, tunneling depth should be at least 36 inches.
Tunneling should begin at the edge of the TPZ, but no closer than a distance equal to one
foot of clearance for each inch of tree DBH. Tunnels should also be offset to either side
of the trunk. For trenching that extends only part way into TPZ, consider trenching
radially to the tree trunk, as this is less harmful than tangential trenching. All trenches
15
Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
made within the TPZ should be backfilled as quickly as possible to prevent root and soil
desiccation.
Managing Root Injured Trees
Root -pruned trees should be monitored for symptoms of water -deficit injury for a
specified period following root pruning. Irrigation should be considered prior to, during,
and after root pruning. Irrigation schedules should consider local soil conditions, climate,
topography, time of year, species tolerance, extent of root pruning and tree health.
Grade Change: Fill Soil
Fill soil placed within the root zones of trees can have an adverse effect, particularly if
the soil is compacted to support a structure or pavement. Soil compaction reduces
aeration and water infiltration. Fill soil, die to textural changes, can also prevent water
from penetrating the original soil layer below where the roots are. Furthermore, soil
placed against the root crown and lower trunk can lead to root disease problems,
especially if the soil near the trunk remains moist during the summer from irrigation.
Alternatives to placing fills over roots zones shall be considered and proposed as
appropriate.
16
AUTHOR'S CREDENTIALS
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Protected Tree Report: Survey, Encroachment and Protection Plan
1322 Loganrita Ave., Arcadia, 91006
Michael Crane, RCA #440. November 2021
CERTIFICATION OF PERFORMANCE
I, Michael Crane, certify that:
• I have personally inspected the tree(s) and the property referred to in this report and have
stated my findings accurately.
• I have no current or prospective interest in the vegetation or the property that is the
subject of this report and have no personal interest or bias with respect to the parties
involved.
• The analysis, opinions, and conclusions stated herein are my own and are based on
current scientific procedures and facts.
• My analysis, opinions, and conclusions were developed and this report has been prepared
according to commonly accepted arboricultural practices.
• No one provided significant professional assistance to me, except as indicated within the
report.
• My compensation is not contingent upon the reporting of a predetermined conclusion that
favors the cause of the client or any other party not upon the results of the assessment, the
attainment of stipulated results, or the occurrence of any subsequent events.
I further certify that I am a member in good standing of the American Society of
Consulting Arborists and the International Society of Arboriculture. I have been
involved in the field of Horticulture in a full-time capacity for a period of more than 25
years.
Signed:
Registered Consulting Arborist #440; American Society of Consulting Arborist
Board Certified Master Arborist #WE 6643B; International Society of Arboriculture
Licensed California Agricultural Pest Control Adviser #AA08269
IN
Date:
November 17, 2021