Areas identified as impervious:
1. Hardened surfaces on or near the ground: sidewalks, private roads, private streets, parking lots, walkways, patios, concrete slabs, runways, taxiways, aprons or other hardened surfaces consisting of asphalt, concrete, or other paving material
2. Hardened surfaces above ground: buildings, foundations, storage tanks, rooftops, athletic courts and tracks
3. Gravel and dirt driveways, and pavers that do not meet requirements to be classified as pervious
4. Paved decks adjacent to pools
5. Wooden decks covered by a roof or having an impervious underlying surface
6. Surface water that is not part of the public conveyance system
Areas identified as pervious:
1. grass
2. gardens
3. landscaped areas without impervious underlying membrane
4. natural rock formations
5. dirt paths
6. pavers set in porous fill (photos, design plans, and specifications must be submitted)
7. porous pavements (photos, design plans, and specifications must be submitted)
