It is unlawful to fish for shad in the lower Columbia River for commercial purposes, or to possess shad taken from those waters for commercial purposes, except as provided in this section:

(1) Gillnet gear may be used to fish for shad if:

(a) The cork line of the gillnet does not exceed 900 feet in length (150 fathoms) and has sufficient buoyancy to float the cork line on the surface. Also, the net may not exceed 40 meshes in depth.

(b) The webbing of the gillnet is constructed of mesh having a breaking strength of less than 10 pounds. The gillnet may be constructed of monofilament webbing or twine.

(c) The mesh size of the gillnet is not less than 5-3/8 inches or more than 6-1/4 inches stretch measure.

(d) The gillnet does not have more than a single web. The gillnet web shall be suspended between a single cork line and a single lead line.

(e) The gillnet does not have added lines, strings, backwalls, trammels, or aprons. Riplines may be used but may not be less than 10 fathoms (60 feet) apart.

(2) The lower Columbia River is open to commercial shad fishing in Shad Area 2S from 3:00 p.m. to 10:00 p.m. daily, Monday through Friday (except on the observed Memorial Day holiday), from May 10 through June 20 annually. Shad taken incidentally during an open commercial salmon or sturgeon fishing period may be retained for commercial purposes.

(3) As used in this chapter and in emergency rules of the director, unless the context clearly requires otherwise:

(a) "Shad Area 2S" means those waters of Salmon Management and Catch Reporting Area (SMCRA) 1D and 1E that are upstream of a line projected true north and south from the Oregon shore through the Washougal blinker light (light "50" flashing red) to a fishing boundary marker on the Washington shore (upper boundary of SMCRA 1E).

(b) "Camas-Washougal Reef Area" means those waters of SMCRA 1D inside of a line commencing at the white six-second equal-interval light approximately 3/4 mile east of the Washougal Woolen Mill pipeline and projected westerly to the Washougal blinker light, thence to the white four-second blinker light on the east end of Lady Island, thence easterly and along the shoreline of Lady Island to the State Highway 14 Bridge, thence easterly and along the shoreline of Lady Island to the State Highway 14 Bridge, thence easterly across the State Highway 14 Bridge to the mainland.