Environmental Engineering Reference
In-Depth Information
FIGURE 10-11.
A tree shelter with three built-in
metal rods anchoring the shelter. San Diego,
California. (Photo by John Rieger.)
FIGURE 10-12.
High deer browsing pressure requires
tall tree shelters for plant survival and establish-
ment. Pennypack Preserve, Pennsylvania.
(Photo by John Rieger.)
cies have specific guidelines or requirements for how much and how long stormwater can be
retained on-site.
A variety of simple erosion control best management practices can be installed right after most
construction and installation activities are completed. In the United States, soil conservation advi-
sors from the Natural Resources Conservation Service and local Resource Conservation Districts
are willing to assist with erosion control planning. For difficult situations, consider using the ser-
vices of a Certified Professional in Erosion and Sediment Control.
Erosion control can be particularly difficult on wetland and floodplain restoration project sites.
One wetland restoration project in the Lake Tahoe Basin (California Tahoe Conservancy 2012b) used a
temporary water-filled cofferdam (Aqua Dam Inc. 2012) to exclude high waters during spring runoff for
the first couple of years, while the installed wetland plantings were becoming established. Water-filled
cofferdams have been used on numerous other lake, riverine, and wetland restoration project sites.
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