What parcels may qualify for low impact drainage rates?
Low impact rates apply to large residential and commercial parcels with significant amounts of highly pervious surface, such as forested land or other unmanaged vegetated areas such as pasturelands and meadows. This highly pervious surface must cover a continuous area of at least one-half an acre, although this coverage may span more than one parcel. Low impact rates are available for the Undeveloped (0-15 percent impervious), Light (16-35 percent impervious) and Medium (36-65 percent impervious) rate categories.
