Since 1994, Island County Code (13.02A.095) has required an unsecured load fee to be charged for vehicles arriving at transfer stations that do not have secured loads.
$3 Cars (with Passenger License Plates)$5 Trucks with loads up to 1 ton$10 Trucks with loads more than 1 ton
Secure Your Load, General Safety InformationWashington Department of Ecology
WSP Good to Know - Secure Your Load Washington State Patrol
For more information see RCW 46.61.655