Erosion and Sediment Pollution Control Program Manual.pdf

Since the flexible materials are pre-wrapped with geotextile, installation is quicker and simpler than
installing PVC pipe. Most of these materials can be fitted to pipes of other sizes and dimensions, so
transition is possible to the pipes that extend to the surface, or to a storm sewer.
Unlike the 4-inch perforated PVC pipe, the entire surface area of these flexible drainage materials
allows for maximum diffusion of air and water to expanding roots.
Use geotextiles for temporary roads and storage areas.
Soil compaction destroys soil structure, which takes many years to develop. Soil structure directly
affects the aeration, drainage, and water-holding capacity of a soil. An inexpensive and recyclable way
of protecting soil structure is to use a layer of heavyweight geotextile covered with about 4 inches of
wood chips. This system will support the weight of a loaded cement truck and can be used on all
construction sites for temporary roadways and materials storage areas.
Retain a qualified arborist to
perform tree maintenance
services.
An experienced arborist can
monitor tree health before and
during construction. If
necessary, this specialist can
then water or fertilize the trees,
or provide treatment for a pest
or disease problem. Although
care should be taken when
working around all trees, some
trees are more sensitive to
construction than others. For
example, older and larger trees
may need specialized attention,
such as fertilization and
irrigation, if they are disturbed
by root pruning, soil
compaction, or other
construction activity.
Retain a qualified arborist to
perform all required pruning.
Construction workers untrained
in pruning or other arboricultural
practices often unintentionally
damage trees while trimming
them. Construction workers
who trim trees often leave
branch stubs, tear the bark, or
remove more branches than
necessary. The tree
preservation plan should
identify which limbs must
be pruned to accommodate
construction. Required pruning and removal of limbs can be better understood by staking construction
footprints. Pruning should be based on the tree preservation plan and be performed by a qualified
arborist before construction begins.
363-2134-008 / March 31, 2012 / Page 472