Wash. Admin. Code § 296-826-60010
(1) You must make sure tanks mounted on farm trucks and trailers meet all of the following:
(2) You must do all of the following when mounting containers on farm trucks:
(a) Use suitable material between the cradle and the container to eliminate metal-to-metal friction.
This is not necessary if the cradle and container are welded together.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050. WSR 15-23-086, § 296-826-60010, filed 11/17/15, effective 12/18/15. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 06-10-067, § 296-826-60010, filed 5/2/06, effective 9/1/06.]