As stated in RCW 90.48.320, "It shall be unlawful ... for oil to enter the waters of the state from ... any fixed or mobile facility or installation ... ." Above-ground used oil tanks should be placed to avoid discharge of spilled oil into the surface waters or groundwaters of the state pursuant to RCW 90.48.315 through 90.48.410.
Wash. Admin. Code § 212-51-035
Statutory Authority: RCW 19.114.040. 87-06-044 (Order 87-05), § 212-51-035, filed 3/4/87.