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220-110-290  <<  220-110-300 >>   220-110-310

WAC 220-110-300

Agency filings affecting this section

Saltwater piers, pilings, docks, floats, rafts, ramps, boathouses, houseboats, and associated moorings.

Piers, pilings, docks, floats, rafts, ramps, boathouses, houseboats, and associated mooring 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 piers, pilings, docks, floats, rafts, ramps, boathouses, houseboats, and associated moorings in saltwater areas. In addition, these projects shall comply with technical provisions and timing restrictions in WAC 220-110-240 through 220-110-271.
(1) Floats and rafts shall not ground on surf smelt, Pacific herring, Pacific sand lance, and rock sole spawning beds. In all other areas, no more than twenty percent of the float or raft within the beach area shall ground at any time. Those portions of the float or raft that will ground shall be constructed to align parallel to the shore and provide a minimum of eight inches clearance between the beach area and nongrounding portions of the float.
(2) Floats, rafts, and associated anchoring systems shall be designed and deployed so that the bed is not damaged.
(3) Piers, docks, floats, rafts, ramps, boathouses, houseboats, and associated moorings shall be designed and located to avoid shading of eelgrass (Zostera spp).
(4) Kelp (Order laminariales) and intertidal wetland vascular plants (except noxious weeds) adversely impacted due to construction of piers, docks, floats, rafts, ramps, boathouses, and houseboats shall be replaced using proven methodology.
(5) Mitigation measures for piers, docks, floats, rafts, ramps, and associated moorings shall include, but are not limited to, restrictions on structure width and/or incorporation of materials that allow adequate light penetration (i.e., grating) for structures located landward of -10.0 feet MLLW.
(6) Piers, docks, floats, rafts, ramps, boathouses, houseboats, and associated moorings shall be designed and located to avoid adverse impacts to Pacific herring spawning beds and rockfish and lingcod settlement and nursery areas.
(7) Piers, docks, floats, rafts, ramps, boathouses, houseboats, and associated moorings shall be designed and located to avoid adverse impacts to juvenile salmonid migration routes and rearing habitats.
(8) Floatation for the structure shall be fully enclosed and contained to prevent the breakup or loss of the floatation material into the water.
(9) Boathouses and houseboats and covered moorages shall not be located landward of -10.0 feet MLLW.
[Statutory Authority: RCW 75.08.080. WSR 94-23-058 (Order 94-160), § 220-110-300, filed 11/14/94, effective 12/15/94. Statutory Authority: RCW 75.08.012, 75.08.080 and 75.20.100. WSR 84-04-047 (Order 84-04), § 220-110-300, filed 1/30/84. Statutory Authority: RCW 75.20.100 and 75.08.080. WSR 83-09-019 (Order 83-25), § 220-110-300, filed 4/13/83.]