(A) On and after February 1, 1941, all garbage or other refuse which is combustible shall be collected by the person or firm authorized to do so by the city only when left for collection in a separate container in which there is no noncombustible substance.
(B) On and after such date, such person or firm shall refuse to collect the garbage or other refuse when combustible and noncombustible material are in the same container.
(`82 Code, § 1060.01)