Gravel driveways. An existing gravel driveway is considered semipervious,
and the conversion of an existing gravel driveway to a conventional
paved driveway that is less than 1,000 square feet shall be exempt
from the requirements of this chapter to implement SWM BMPs. The conversion
of an existing gravel driveway to a conventional paved driveway that
is at least 1,000 square feet but not more than 5,000 square feet
may be accomplished using standardized BMPs. The stormwater management
Planning Guidelines for Existing Gravel Driveways document provided
in Appendix B contains two tables labeled "Gravel Driveways" and has
been prepared to assist applicants in meeting this requirement for
individual lots only.