18.128.170: OUTDOOR STORAGE AND WASTE DISPOSAL:
   A.   Outdoor storage and activities associated with permitted uses shall be entirely enclosed on the front setback line by building walls, or by a solid masonry wall not less than six feet (6') in height. On all other property lines, such uses shall be enclosed by a six foot (6') wall or by screen landscaping not less than eight feet (8') in height, in addition to a fence not less than six feet (6') in height, of chainlink or other similar material, to screen stockpiles from external boundaries of the property. Items shall not be stacked or stored higher than six feet (6').
   B.   The storage of combustible materials shall be not less than twenty feet (20') from any interior lot line, and a roadway shall be provided, graded, surfaced and maintained from the street to the rear of the property to permit free access of firetrucks at any time.
   C.   No materials or wastes shall be deposited upon a lot in such form or manner as may result in removal from the lot by natural causes or forces. All waste materials shall be stored in an enclosed area and shall be accessible to service vehicles.
   D.   Wastes which might cause fumes or dust or which constitute a fire hazard or which may be edible by or otherwise be attractive to rodents or insects shall be stored only in closed containers in required enclosures. (Ord. 1000 § 31.53(J), 1955)