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

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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


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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.