How many types of BMPs are there?
A. BMPS include: 1) structural devices such as silt fences, straw waddles, sediment settling basins, 2) application practices such as spreading straw mulch, hydro-mulching, hydro-seeding, 3) planning practices such as minimizing site disturbance, maintain existing vegetation filter strips, phasing construction activities to minimize disturbance area at any given time, and even 4) political practices such county or city site disturbance ordinances, and regulations requiring minimum setback distance of septic drainfields to a surface water. In construction, there are erosion control BMPs and sedimentation control BMP.
