The silt fence installation at catch basins at low points utilizes two-by-four-inch wooden stakes driven a minimum of twelve inches into the ground with wooden lateral cross braces as needed. Filter fabric is tucked six to twelve inches into grade around the catch basin to prevent sediment from entering the stormwater system. The hay bale filter installation at catch basin at low points surrounds the catch basin with bales, anchored with two two-by-two-inch by three-foot stakes per bale. Stormwater inlets which do not discharge to sediment traps or basins must be protected until the tributary areas are stabilized. Sediment must be removed from inlet protection after each storm event.
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