I hope this helps:

RCW 90.58.150 Selective commercial timber cutting, when.
With respect to timber situated within two hundred feet abutting landward of the ordinary high water mark within shorelines of state-wide significance (any creek or stream with a mean annual flow of over 20cfs or any lake over 20 acres in size), the department (state) or local government (county) shall allow only selective commercial timber cutting, so that no more than thirty percent of the merchantable trees may be harvested in any ten year period of time: PROVIDED, That other timber harvesting methods may be permitted in those limited instances where the topography, soil conditions or silviculture practices necessary for regeneration render selective logging ecologically detrimental: PROVIDED FURTHER, That clear cutting of timber which is solely incidental to the preperation of land for other uses authorized by this chapter may be permitted.

Complaints for possible logging violations should be forwarded to the County Rep. who is in charge of reviewing forestry practices applications. If they give you the run around threaten to open a code violation on the cutting that has occured. In King County, logging isn't allowed within 200-feet of the Ordinary High Water Mark (OHWM) of a shoreline of the state unless the land owner applies for a shoreline conditional use permit first. The buffer can be reduced to 100-feet if the cutting occurs in a forestry zone. Good luck.... Save those salmonids!