(1) Toilet rooms and washrooms must not be used for storage.

(2) Floors in all buildings and movable facilities must be maintained in a clean, and so far as reasonably possible, dry condition. Where wet processes are used, drainage must be maintained and false floors, platforms, mats or other dry standing places must be provided wherever reasonably possible.

(3) Screens required by these rules must be of 16 mesh or equal.

(4) Suitable receptacles for the storage of waste and refuse must be provided wherever needed. They must be maintained in a sanitary condition. Receptacles used for moist or liquid waste must be made of a smooth finished surface, impervious to moisture. They must be kept covered and must be washed out as often as necessary to keep them clean.

(5) All sweepings, waste and refuse must be removed in a manner which avoids raising dust, and as often as necessary to keep all rooms used by employees clean.

(6) Toilet waste must not be discharged onto the ground surface from railroad cars within servicing area of yards. Those areas must be kept free of refuse, litter, debris, vermin and rodents.

(7) Adequate drainage must be provided where work is performed in repair yards or on repair tracks in the open or in open sheds or pits. Waste must not drain into any water of the state, nor contaminate the ground surface, but must be disposed of in a manner approved by the Washington state department of health.