Grease (animal), oil, and sand interceptors, or traps, shall be provided by the owner when, in the opinion of the director, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, sand, or other harmful ingredients; except that interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved by the director and shall be so located as to be readily and easily accessible for cleaning and inspection.
Interceptors will be maintained at appropriate intervals and proof of maintenance will be maintained for at least three (3) years. Manifests showing the material removed from the interceptors was disposed of in a proper manner will be maintained for at least three (3) years.