"Razor clam beds" are defined as that portion of Pacific Ocean beaches westerly of a line 150 feet waterward of the extreme upper limit of the hard sand area. The detached Willapa Bay Spits that are north of Leadbetter Channel, west of Ellen Sands and south of the Willapa Ship Channel are also defined as "razor clam beds," as are those portions of the mouths of Grays Harbor and Willapa Bay which contain razor clams.
Wash. Admin. Code § 220-320-030