Wash. Rev. Code § 43.21C.428
(1) A county, city, or town may recover its reasonable expenses of preparation of a nonproject environmental impact statement prepared under RCW 43.21C.229 and 43.21C.440:
(2)
(a) A county, city, or town is authorized to assess a fee upon subsequent development that will make use of and benefit from:
(4) Prior to the collection of fees, the county, city, or town must enact an ordinance that establishes the total amount of expenses to be recovered through fees and provides objective standards for determining the fee amount to be imposed upon each development proposal proportionate to the impacts of each development and to the benefits accruing to each development from the nonproject environmental review. The ordinance must provide:
[ 2013 c 243 s 1.]