Any permit issued under any prior ordinance is contained in effect by the operation of this section for the purposes of subsection 7-5.4 subject to the provisions of this section and subject to such regulations as may be established from time to time for operation under such permits. Existing refuse disposal sites not located in land use districts as herein required may continue as non-conforming uses as specified in Chapter XXXII, Planning and Land Use. (Ord. #15, §1[4])