30 CFR 57.4130 - Surface electric substations and liquid storage facilities.
The requirements of this standard apply to surface areas only.
(a) If a hazard to persons could be created, no combustible materials shall be stored or allowed to accumulate within 25 feet of the following:
(3) Any group of containers used for storage of more than 60 gallons of flammable or combustible liquids.
Title 30 published on 2014-07-01.
No entries appear in the Federal Register after this date, for 30 CFR Part 57.