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<br />(3) Silt fence and diversions. Sheet flow runoff from denuded areas shall be intercepted by
<br />silt fence or diversions to protect adjacent properties, water resources, and wetlands from
<br />sediment transported via sheet flow. Where intended to provide sediment control, silt
<br />fence shall be placed on a level contour and shall be capable of temporarily ponding
<br />runoff. The relationship between the maximum drainage area to silt fence for a particular
<br />slope range is shown in Table 3 below. Storm water diversion practices shall be used to
<br />keep runoff away from disturbed areas and steep slopes. Such devices, which include
<br />swales, dikes or berms, may receive storm water runoff from areas up to 10 acres. Placing
<br />silt fence in parallel does not extend the permissible drainage area to tlee silt fence.
<br />Table 3: Maximum Draina a Area to Silt Fence
<br />Maximum Drainage Area.:(acres)`to 100 linear
<br />feet of silt fence Range of Slope for a drainage area (%)
<br />0.5 <2%
<br />0.25 > 2% but < 20%
<br />0.125 > 20% but < 50%
<br />(4) Inlet protection. Erosion and sediment control practices, such as boxed inlet protection, shall
<br />be installed to minimize sediment-laden water entering active storm drain systems. X411 inlets
<br />receiving runofffrom drainage areas of one or more acres will require a sediment settling
<br />pond. Straw or hay bales are not acceptable forms of inlet protection.
<br />(5) Off-site tracking of sedunent and dust control. Best tanagement practices must be
<br />implemented to ensure sediment is not tracked off-site and that dust is controlled. These best
<br />management practices must include, but are not limited to, the following:
<br />A. Construction entrances shall be built and shall serve as the only permitted
<br />points of ingress and egress to the development area. These entrances shall
<br />be built of a stabilized pad of aggregate stone or recycled concrete or cement
<br />sized greater than 2" in diameter, placed over a geotextile fabric, and
<br />constructed in conformance with specifications in the most recent edition of
<br />the Rainwater and Land Development Manual.
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