Removal of liquid waste, including grease collections, shall comply with the provisions of this chapter. The licensee shall maintain a copy of the food processing operation's waste service contract on the premises of the food processing operation indicating approved waste servicing areas, and the:
Sewage and other liquid wastes shall be removed from a food processing operation by a sewage transport vehicle in such a way that the waste does not constitute a source of contamination in areas where food is exposed, and in such a way that a public health hazard or nuisance is not created.
D.C. Mun. Regs. tit. 25, r. 25-B1504