(a) Surface storage buildings or storage rooms in which flammable or combustible liquids, including grease, are stored and that are within 100 feet of any person's work station shall be ventilated with a sufficient volume of air to prevent the accumulation of flammable vapors.
(b) In addition, the buildings or rooms shall be-
(c) Flammable or combustible liquids in use for day-to-day maintenance and operational activities are not considered in storage under this standard.
053-3 Wyo. Code R. § 57.4531