TITL TLE: TREES: AREAS O OF S SHADE O OR P POTE TENTIAL D - - PowerPoint PPT Presentation

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Jul 23, 2023 210 likes •381 views

TITL TLE: TREES: AREAS O OF S SHADE O OR P POTE TENTIAL D DISASTE TER? SPEAKE KER: DON S SWARTZB ZBAUGH, H, P PRESID IDENT, CALIF IFORNIA A ARBORIST The views and opinions expressed in this presentation are those of the authors

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TITL TLE: TREES: AREAS O OF S SHADE O OR P POTE TENTIAL D DISASTE TER? SPEAKE KER: DON S SWARTZB ZBAUGH, H, P PRESID IDENT, CALIF IFORNIA A ARBORIST

The views and opinions expressed in this presentation are those of the authors and do not necessarily reflect those of CASBO.

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A B C and D

f Trees in the School Yard

Don Swartzbaugh

President California Arborist

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Attractive Beneficial Direction

Trees in the School Yard

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Attractive

Break Monotony Peaceful Setting Soften Landscape Add Color

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Beneficial

Shade
Wind shelter
Erosion control
Habitat wildlife
Add value to

property

…and even used to make play yard equipment

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1990 – Towering Eucalyptus branch fell and killed a 4-year-old girl in a Highland Park school yard. Reason: tree had not been pruned or maintained in recent memory. 1998 – Eucalyptus tree fell onto a car stopped on the Pomona College campus in Claremont killing two Pomona College

sophomores. Reason: roots weakened by heavy rainfall.

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2015 – 85-foot Italian stone pine fell on a group of children and summer camp counselors in front of the Kidspace Children’s Museum in Pasadena. 8 children injured, 2 hospitalized in critical condition. Reason: poorly developed root system resulted in tree being inadequately anchored to the ground.

Photos from Arborist Report: A—shows overview of root plate of failed Italian stone pine. The circled area is shown in Photo B B—shows lack of root crown indicated by the yellow dashed line and evidence of burn on the underside of the tree

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2016 – Tree fell on a campus of the East Whittier School District and landed in front of a class room. This tree was approximately 60 years old, a volunteer, and had never been properly planted or

maintained. Reason: combination of

the drought and a compromised root system.

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2016 – Eucalyptus tree fell on a wedding party taking pictures underneath it at Penn Park in Whittier. Injured 5 including a 4-year-old

girl. Killed the mother of the bride. Reason: still under investigation.

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COMMON CAUSES FOR CATASTROPHIC TREE EVENTS

Lack of maintenance
Inadequate water / too much water
Diseases and pests
Environmental factors
Pesticides

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Starting point – take an inventory of your trees

Location, type, size, health, risk
Keep it simple!

Reassess each of the high risk trees

Identify the risk; e.g. dying, leaning, diseased, low -

hanging branches, etc.

Document a recommendation to reduce the risk

Direction

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Develop a plan to address each of the high risk trees

Determine best resources…inside, contracted,

partnership

Plan should include specific tree identification,

location, actions to be taken, schedule, labor, special skills required, and reporting expectations

Direction

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Develop or augment existing maintenance plan to include the active management of the trees. Update the tree inventory with actions taken

Direction

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QUESTIONS?

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TITL TLE: TREES: AREAS O OF S SHADE O OR P POTE TENTIAL D DISASTE TER? SPEAKE KER: DON S SWARTZB ZBAUGH, H, P PRESID IDENT, CALIF IFORNIA A ARBORIST

The views and opinions expressed in this presentation are those of the authors and do not necessarily reflect those of CASBO.