(1) It is unlawful for any person to throw, drop, or leave any discarded object, garbage, trash or rubbish, upon any department lands except into a litter or garbage receptacle or container installed for that purpose on such property. Violation of this subsection is pursuant to RCW 70.93.060, which makes it a class 3 civil infraction to litter in an amount less than or equal to one cubic foot; a misdemeanor to litter in an amount greater than one cubic foot but less than one cubic yard; and a gross misdemeanor to litter in an amount of one cubic yard or more.

(2) It is unlawful to drain or dump refuse or human waste from any trailer, camper, automobile, other vehicle, or vessel on department lands.

(3) Except for administrative purposes, it is unlawful to clean or wash any automobile, vessel, or other vehicle on department lands with any substance other than water or biodegradable soaps. This subsection does not apply to cleaning activities to control and prevent the spread of invasive species provided only water is used.