Assertion: silt fence | /r/HasProperty | perimeter controls
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Silt fences are often perimeter controls, it is typically used in combination with sediment basins and sediment traps, as well as erosion controls, which are designed to retain sediment in place where soil is being disturbed by construction processes (i.e., land grading and other earthworks).