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PREPARE BY SIT> SCAPES
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— ALL TREE SHALL BE PLANTED AND MAINTAINED ATA MINIMUM ONIU NEE1'
FROM THE TREE'S DRIP LINE TO ANY COMBUSTIBLE STRUCTURE (PG 25)
- TREE SPACING OF A MINIMUM 10 FEET BETWEEN CANOPIES:
EXCEPTION: THE ARBORETUM TRAIL STREET SCENE FEATURES TALL
WINDROW TREES, WHICH MAY BE PLANTED ALONG THE PERIMETER
WALLS AS A FORMAL EVERGREEN BACKGROUND (PG 27). TREES WILL BE
PLANTED 15' O.C. IN 300' LONG MAX. SECTIONS WITH +100' BREAKS
BETWEEN WINDROW SECTIONS (APPENDIX F)
- MATURE TREES SHALL BE LIMBED UP TO EIGHT FEET OR 3x THE HEIGHT OF
UNDERSTORY PLANTS TO PREVENT LADDER FUELS, WHICHEVER IS GREATER
(PG 25)
- TREE MAINTENANCE INCLUDES LIMBING-UP (CANOPY RAISING) 6 FEET OR
ONE-THIRD THE HEIGHT OF THE TREE (PG 25)
- SHRUBS WILL NOT BE ALLOWED DIRECTLY ADJACENT TO TREE TRUNKS,
BELOW TREE CANOPIES UNLESS APPROPRIATE SEPARATION IS ACHIEVED TO
AVOID LADDER FUELS (AT LEAST 6 FEET BETWEEN THE SHRUB AND THE
LOWEST LIMB OF THE TREE) (PG 34)
- LOW GROWING GROUNDCOVER IS PERMISSIBLE THROUGHOUT THE PARKWAY
PLANTING AREA (PG 34)
- HEDGE PLANTING/MAINTENANCE IS PREFERRED AS IT RESULTS IN A DENSE,
COMPACT FUEL THAT IS LESS LIKELY TO IGNITE THAN SHRUBS ALLOWED TO
GROW IN AN AIRY OPEN FORM (PG 33)
- FIRE RESISTIVE VINES ARE ACCEPTABLE ON THE PERIMETER WALLS AS LONG
AS THEY DO NOT ACCUMULATE DEAD LITTER OR HAVE MULTI -LAYERED
GROWTH PATTERN WHERE SHADED LAYERS INCLUDE FLAMMABLE, DEAD
GROWTH (PG 34)
- COMBUSTIBLE GROUND COVERS, SUCH AS MULCH OR WOOD CHIPS, ARE
PROHIBITED ADJACENT TO STRUCTURES WITH AN EXTERIOR STUCCO WALL
AND WEEP SCREED (PG 26)
NOTE: ALL PLANT MATERIAL SPECIES CONFORM TO THE "FUEL MODIFICATION
PROHIBITED PLANT LIST" (APPENDIX G) AND THE ARBORETUM PROJECT PLANT
PALETTE (APPENDIX F)
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HERITAGE TREE
LOCATION (TYP.)
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FIRE DESIGN CRITERIA PER
"FIRE PROTECTION MASTER PLAN FOR THE ARBORETUM"
(PREPARED BY DUDEK - APRIL 2015)
STREET TREE INSTALLATION NOTE:
STREET TREES WITHIN SIGHTLINES ARE TO BE REVIEWED BY TRAFFIC ENGINEER
AND PUBLIC WORKS DEPARTMENT PRIOR TO INSTALLATION.
rsESS STREET TREE LIST
SYMBOL KEY BOTANICAL NAME COMMON NAME COMMENTS
A Lagerstroemia hybrids CrapeMyrtle FLOWERING
n'Muskogee' (Lavender) ACCENT
B Quercus robur x bicolor `Long' Regal Prince Oak BACKDROP
WINDSCREEN
PLANT @ 15' O.C.
C Specimen Tree To Be Selected 'HERITAGE'
TREE
D Ulmus parvifolia'True Green' Evergreen Elm STREET TREE
VINES
so V-1 Parthenocissus tricuspidata Boston Ivy
10' O.C.
SELF -CLIMBING
LOW FUEL VINE
PLANTED ON EXTERR
FACE OF WALL (TYP.)
SIZETQ_Y WUCOLS
24" BOX
12
M
STD.
W
24" BOX
32
M
STD.
60" Box Min.
2
M
or Transplanted
Equivalent
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36" BOX
9
M
1G
100 M
SCALE
1"-20'
All
A pp*
S I T E S C A P E I
Landscape Architecture
and Planning
3190 B2 Airport Loop Drive
Costa Mesa, CA 92626
Richard Polhamus, License CA -#2782
(940) 644-9370 (714) 210-3140 FAX
REVISION
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