Orange County NC Website
Browse       Search
IMPERVIOUS SURFACE <br /> Any surface which does not <br /> absorb rain, including <br /> buildings, roads, driveways, <br /> sidewalks, patios, and parking <br /> areas. <br /> Both paved (asphalt,concrete) <br /> and unpaved (gravel, crushed <br /> stone, soil) surfaces are <br /> considered to be impervious. <br />