This chapter combines the county's stormwater and erosion control regulations are combined into one chapter, and apply to development or redevelopment activities that include adding 5,000 SF or more impervious surface in rural areas and 2,000 SF or more in urban areas. Stormwater requirements include off-site analysis of impacts _ mile downstream and conveyance standards. Erosion control requirements include variable requirements for small parcel and large parcel developments, signage at points of entry for subdivisions or short plats, and formal erosion control training required of contractors. Stormwater and large parcel development written plans are required; small parcel developments in erosion hazard areas are also required to submit and implement written plans.