Boat ramp projects shall incorporate mitigation measures as necessary to achieve no-net-loss of productive capacity of fish and shellfish habitat. The following technical provisions apply to saltwater area boat ramp and launch projects. In addition, these projects shall comply with technical provisions and timing restrictions in WAC 220-110-240
(1) Railway-type boat launches shall be designed to cause minimal interference with tidal currents and littoral drift.
(2) Boat ramps shall be designed and located to avoid adverse impacts to surf smelt, Pacific sand lance, rock sole, and Pacific herring spawning beds, rockfish and lingcod settlement and nursery areas, and eelgrass (Zostera spp).
(3) The side slopes of a boat ramp shall be no steeper than 1.5 feet horizontal to one foot vertical.
[Statutory Authority: RCW 75.08.080
. WSR 94-23-058 (Order 94-160), § 220-110-290, filed 11/14/94, effective 12/15/94. Statutory Authority: RCW 75.20.100
and 75.08.080. WSR 83-09-019 (Order 83-25), § 220-110-290, filed 4/13/83.]