1. Benefits of Trees Shade Storm Water Management Slow Capture Filter
Clean air
Habitat
Property Value
Health and Healing

2. Amazing Trees

3. Amazing Trees

4. Amazing Trees

5. Trees and Stress

6. Soil Compaction

7. Plant Requirements
Water
Nutrients
Oxygen

8. Trees in their natural setting are fed by natural fertilizers through the shedding of leaves, branches and twigs that decay on the ground under them.

9. This organic matter is broken down and transferred to the root system by a host of microorganisms, insects, and fungi.

10. At the same time this process aerates the soil and creates a free draining, healthy environment.

11. Compacted soil can lead to tree decline.
Stressed
Healthy

12. Compacted soil can lead to tree decline.
Stressed
Healthy

13. It is important to establish and respect tree protection zones.

14. It is important to establish and respect tree protection zones.

15. It is important to establish and respect tree protection zones.
NOT GOOD

16. It is important to establish and respect tree protection zones.
NOT GOOD

17. It is important to establish and respect tree protection zones.

20. How valuable are those trees?

21. How valuable are those trees?

22. Soil compaction may be the result of foot traffic, heavy equipment, or any activity that applies pressure to the soil.

23. Soil compaction may be the result of foot traffic, heavy equipment, or any activity that applies pressure to the soil.

24. Soil compaction may be the result of foot traffic, heavy equipment, or any activity that applies pressure to the soil.

25. Soil compaction may be the result of foot traffic, heavy equipment, or any activity that applies pressure to the soil.
Plant Pest

26. Unfavorable soil compaction happens quickly after only 1-3 events.

27. An event is driving a regular sized truck over the root zone one time.

29. It is important to establish and respect tree protection zones.

44. Parked here to unload equipment
Parked here to unload equipment. Better option would be to unload on the pavement, then go park the truck somewhere out of the way, not on the grass.

45. We understand the need to get the boom truck in here
We understand the need to get the boom truck in here. But the ground should have been protected from damage and compaction. Some of these ruts are 6” deep. The utility trailer is parked here out of convenience, not necessity. Park the trailer on a nearby paved surface and carry your tools.

46. Didn’t even have the consideration to use pads under the down riggers.

47. There are no tools or equipment in the white van
There are no tools or equipment in the white van. There is no need for this passenger van to be parked back here. This is not a parking lot. Great spot for a utility trailer!

48. At this point, turf is severely damaged
At this point, turf is severely damaged. On this day (May 13) work is being performed at the west side of the Library. There is no need for these vehicles to be here.
There is a geo grid system under this area of turf. This was built as an emergency access lane designed to prevent large vehicles from sinking and becoming stuck. It is not intended as a road and parking area for daily use.

49. Instead of staying within the 12’ wide emergency access lane, the contractors have decided to stray from the path and use the larger lawn area for parking and turning around. Again, on this day work is being performed at the west side of the Library. There is no need for these vehicles to be here.

50. This is unacceptable. This is precisely why grounds needs to be involve during the planning stages of all projects. This area should be fenced off as a tree protection zone. No person, materials or equipment shall enter.
These 2 foot wide pieces of plywood are not going to cut it. The idea is to distribute the wieght and force of the equipment to reduce soil compaction. If the plywood is the same width as the tires on the machine, it has no effect.

52. All of this area needs to be protected with 4’x8’x ¾” plywood

56. This area needs to be protected with 4’x8’x ¾” plywood

57. This area needs to be protected with 4’x8’x ¾” plywood

58. It is necessary to block off these parking spots to access the container. Why can’t the container be stored on the concrete?

59. Preventing Soil Compaction
Develop a Tree Protection Plan
Hire a Certified Arborist
On the plans identify trees to be saved and trees to be removed
Identify tree protection zones based on trunk diameter
Provide Designated Parking, Staging and Storage areas
Tree Protection fencing should be placed at a minimum 1 foot from the base of the tree per inch in trunk diameter (minimum 10’)
Not all trees can and should be preserved

60. Preventing Soil Compaction
Establish Protection Zones
Tree Protection Fencing shall be erected prior to the start of all construction activities and remain in place until project is completed
Fencing shall be repaired and maintained by the contractor during the entirety of the project

61. Preventing Soil Compaction
Establish Protection Zones

70. Tree Protection Zones DO NOT ENTER

71. Overflow Construction Parking Construction Zone
Tree Protection Zones DO NOT ENTER

77. Preventing Soil Compaction
Plywood or Mats
Where it is necessary to travel across tree root zones (i.e., under canopy) or lawns the following measures shall be taken:
For single loads, one time only up to 9,000 lbs., a minimum ¾″ thick, 4’x8’ full sheets plywood base shall be placed over areas impacted.
For single loads over 9,000 lbs., two layers of ¾″ plywood is required.
For projects requiring multiple loads up to 9,000 lbs. to cross tree root zones, two layers of ¾″ plywood on coarse, chipped, hardwood base at depth of 12”shall be required. Mulch and plywood shall be supplemented throughout the project to keep system structurally functional.
For projects requiring multiple loads over 9,000 lbs. to cross tree root zones, a construction entry road consisting of minimum 6” thick, 10’ x 16’ logging mats on coarse, chipped, hardwood base at depth of 12”shall be required. Mulch and logging mats shall be supplemented throughout the project to keep matting structurally functional.
Any damage to existing landscaping by contractors, (including lawn areas), will be remediated before final payment is made.

78. If Critical Root Zone must be violated
Develop Tree Preservation Prescription
Mulch
Irrigation during and after construction
Nutrient Program
Plant Growth Regulators
Preventative Pesticide Applications

79. Preventing Soil Compaction
Mulch to a depth of 2-4”
Up to 12” can be used when heavy loads and traffic are expected but should be reduced to 3 inches when work is completed.

80. Preventing Soil Compaction
Plywood or Mats

81. Correcting Compaction
Aerating
Air spading
Soil Fracturing
Soil amendments

85. It is necessary to block off these parking spots to access the container. Why can’t the container be stored on the concrete?

86. Correcting Compaction
Aerating
Soil Fracturing
Soil amendments
Air spading

87. Correcting Compaction
Aerating
Soil Fracturing
Soil amendments
Air spading

88. Correcting Compaction
Aerating
Soil Fracturing
Soil amendments
Air spading

89. Air Spading

90. Air Spading

91. Air Spading
Radial Trenching

92. Air Spading
Backfill with soil amendments
Radial Trenching

93. Plant Growth Regulators

94. Plant Growth Regulators

95. Take Away Trees are valuable assets Soil Compaction is bad
Soil Compaction happens quickly and easily
Prevention is cheaper than correction
Tree Protection – Have a plan
Consult a Certified Arborist
Almost ALL tree health problems start with the roots and soil

96. Love Thy Trees

97. Thank You! Nathan Dubosh Medical University of South Carolina
ISA Certified Arborist #: SO-6652A
Cell:     
Office: