Humboldt County is considering changes to its Coastal Plan that would provide more flexibility in uses allowed in the Coastal-Dependent Industrial ("MC") zone. Parcels under discussion are on the Samoa Peninsula, in Fields Landing, and King Salmon.
Eureka and Arcata also have parcels zoned for Coastal-Dependent Industrial uses (see map).
 For more info:

Full text of proposed changes

Coastal-Dependent No More? County Looks to Ease Restrictions on Industrial Development Around the Bay - Hank Sims, Lost Coast Outpost. Feb. 12, 2016

How the Harbor District Found Itself in the Middle of Humboldt’s Most Bitter Political Fight - Ryan Burns, Lost Coast Outpost. April 29, 2016