What is the minimum storage capacity required for sediment traps controlling drainage areas less than 3 acres?

The minimum storage capacity required for sediment traps that manage drainage areas less than 3 acres is established based on best practices for effective sediment control. In this case, the standard is 134 cubic yards per acre. This capacity is designed to ensure that the sediment trap can accommodate the runoff and associated sediment load from smaller drainage areas without being overwhelmed.

The reason 134 cubic yards is the standard primarily stems from the need to balance efficiency and functionality. Sediment traps must be large enough to retain sediment during storm events but not so large that they become impractical or costly to construct and maintain. Proper sizing helps to manage the water quality by trapping sediments that harm water bodies, thus protecting the ecological balance and reducing sedimentation downstream.

It’s important to note that while other options may reflect different values for various sediment control practices, the specific requirement for sediment traps under 3 acres has been determined to be 134 cubic yards, which serves as a common guideline within erosion and sediment control protocols.