Secondary and Cumulative Impacts Master Management Plan - 2014

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Article 5: Development Standards
Section 5.4. Tree Protection
5.4.7. Tree Protection During Development Activity
Morrisville, NC June 2013
Unified Development Ordinance - Public Hearing Draft Page 5-9
2. Warning Signage
Warning signs shall be installed along any required tree protective fencing at points no more
than 150 feet apart. The signs shall be clearly visible from all sides of the outside of the fenced-
in area. The size of each sign must
be a minimum of two feet by two
feet. The sign message shall, in
both English and Spanish, identify
the fenced or marked area as a
tree protection area and direct
construction workers not to
encroach into the area (e.g., ―Tree
Protection Area: Do Not Enter‖).
3. Duration of Protective Fencing
or Signage301
Required protective fencing and
signage shall be erected before
any grading or other development
activity begins and shall be
maintained until issuance of a
Certificate of
Compliance/Occupancy following
completion of all development in
the immediate area of the fencing or signage.
C. Tree Protection Area Limitations and Requirements302
Except where authorized by the tree protection plan, encroachments into a tree protection area may
occur only when no other alternative exists, and shall comply with landscaping best management
practices and the following limitations and requirements:
1. Construction Activity, Equipment, or Materials Storage
No development activity—including grade changes, the operation or parking of heavy
equipment, or the washing down of concrete or cement handling equipment, or the storage of
fuel, chemicals, materials, supplies, or construction waste and debris—shall be allowed within the
tree protection area.
2. Clearing of Vegetation
Any clearing of vegetation within the tree protection area shall be only by hand.
3. Use of Retaining Walls and Drywells
Retaining walls and drywells may be used to protect trees to be preserved from severe grade
changes if venting adequate to allow air and water to reach tree roots is provided through any
fill.
4. Impervious Surface
No impervious surface (including, but not limited to, paving or buildings) may be located within a
tree protection area.
301 This clarifies that protective fencing and marking must remain in place until the development is fully completed.
302 This expands the prohibition on ―construction site activities‖ in Town staff‘s draft tree protection ordinance to address other
potential construction-related encroachments into a tree protection area.
Figur Tree Protective Fencing and Signage.