What is erosion controlin construction?

Erosion control keeps soil from moving in the first place, using measures like erosion control blankets, mulch, and temporary seeding on slopes and stockpiles. Sediment control intercepts soil that is already moving in runoff, using silt fence, inlet protection, check dams, and sediment basins. Construction drawings and permits treat them as one combined scope on the erosion and sediment control (ESC) sheets, and most contractors price them as a single BMP package.

The permit holder, usually the general contractor as the operator under the construction general permit, carries legal responsibility for keeping BMPs installed and working. In practice the GC subcontracts installation to the grading contractor or a dedicated SWPPP firm, but enforcement actions and stop work orders land on the permit holder. That is why many GCs carry erosion control in their own general conditions rather than burying it in the earthwork subcontract.

Until the site reaches final stabilization as defined by the permit, which commonly means a uniform perennial vegetative cover at about 70 percent of background density on all disturbed areas, or hard surfaces like paving in place. Temporary BMPs are then removed and the fence lines or anchor trenches restored. For estimating, that means the maintenance window often runs well past substantial completion of the building itself.