Or. Admin. R. 632-010-0138
Every permanent oil or condensate tank, or battery of tanks, must be surrounded by a dike or firewall with a capacity of one and one-half times that of the tank or battery of tanks.
ORS 520
ORS 520.095
DGMI 1-2013, f. & cert. ef 3-21-13
GMI 2-1995, f. & cert. ef. 3-10-95
GMI 6-1990, f. & cert. ef. 12-5-90
GMI 1, f. 1-27-54