(1) The premises must be kept in a clean and orderly condition, be free from strong or foul odors, smoke, and may not contribute to excessive air pollution. Construction and maintenance of driveways and adjacent plant traffic areas should be of cement, asphalt, or similar material to keep dust and mud to a minimum.

(2) The adjacent surroundings must be free from refuse, rubbish, and waste materials to prevent harborage of rodents, insects, and other vermin.

(3) A suitable drainage system must be provided which will allow rapid drainage of all water from plant buildings and driveways, including surface water around the plant and on the premises, and all such water must be disposed of in such a manner as to prevent a nuisance or health hazard.

(4) The building or buildings must be of sound construction and shall be kept in good repair to prevent the entrance or harboring of rodents, birds, insects, vermin, dogs, and cats. All service pipe openings through outside walls must be effectively sealed around the opening or provided with tight metal collars.