How quickly does the EPA general permit require a construction site to be stabilized after the last disturbance?

The EPA general permit stipulates that a construction site must be stabilized within a specific timeframe after the last disturbance to minimize sediment runoff and protect water quality. Stabilization is defined as the application of either permanent or temporary vegetative or non-vegetative cover to the disturbed area. The requirement for stabilization within 14 days is designed to ensure prompt action in response to construction activities, which can leave soil exposed and vulnerable to erosion. By emphasizing a 14-day timeframe, the regulation aims to mitigate the risks associated with erosion and sediment runoff, contributing to better management of stormwater quality.

The other options do not align with the EPA's regulations, as they would allow for a longer delay in stabilization than what is prescribed in the permit, potentially increasing the risk of erosion and sedimentation into nearby waterways.