21.18.500 Parking lot surfacing requirements.
A. Grading and Paving. All areas used for off-street parking, movement, storage or display of motor vehicles shall be graded and surfaced to standards approved by the city engineer before an occupancy permit for the building or use is issued.
B. Low Impact Design. Use of paving materials such as, but not limited to, pervious paving, “grasscrete” or similar materials to reduce the impact of stormwater runoff are encouraged where appropriate and consistent with applicable development standards. Permeable paving is not appropriate in the following circumstances:
1. Fire lanes, unless the developer provides certification from the manufacturer that the material is capable of meeting the fire access requirements of LMC Title 9.
2. Gas stations, truck stops, industrial chemical storage areas, or other locations where concentrated pollutant spills are a hazard.
3. Where the parking lot surface will slope more than five percent.
4. Where excessive sediment is likely to be deposited on the surface, such as construction and landscaping material storage areas, or where an erosion prone area is upslope of the permeable surface.
5. Where seasonally high ground water creates prolonged saturation at or near the surface, or where soils can become unstable when saturated.
6. In any other situation or application where, based on accepted engineering practice or standards, the city engineer determines that pervious paving is inappropriate.
C. Traffic Control Devices. All traffic control devices such as parking strips designating car stalls, directional arrows or signs, curbs, bullrails, and other developments shall be installed and completed as shown on the approved plans. Hard surfaced parking areas shall use paint or similar devices to delineate parking stalls and directional arrows.
D. Pedestrian Walks. Pedestrian walks shall be curbed, or raised six inches above the lot surface. (Ord. 2730 § 1, 2008; Ord. 2441 § 5, 2003; Ord. 2020 § 9, 1994; Ord. 478 § 1, 1969; Ord. 190 Art. XI § 11.3, 1964)