Section 5551 - Housekeeping(a) Maintenance and operating practices shall be in accordance with established procedures which will tend to control leakage and prevent the accidental escape of flammable or combustible liquids.Spills shall be cleaned up promptly.(b) Adequate aisles shall be maintained for unobstructed movement of personnel and so that fire protection equipment can be brought to bear on any part of flammable or combustible liquid storage, use, or any unit physical operation.(c) Combustible waste material and residues in a building or unit operating area shall be kept to a minimum, stored in covered metal receptacles and disposed of daily.(d) Ground area around buildings and unit operating areas shall be kept free of weeds, trash or other unnecessary combustible materials.Cal. Code Regs. Tit. 8, § 5551