(a) The governing body shall be the final determiner of the scope and meaning of all provisions of the Plumbing Code which may be unclear, ambiguous or requiring interpretation.
(b) The Plumbing Inspector shall have power to modify any of the provisions of the Plumbing Code upon application in writing by the owner or lessee or his or her authorized agent, when there are practical difficulties in the way of carrying out the strict letter of the code. In approving modifications, the Plumbing Inspector shall see that the spirit of the code is observed, public safety secured and substantial justice done. The particulars of a modification when granted or allowed and the decision of the Inspector thereon shall be entered upon the records of the Plumbing Inspector and a signed copy shall be furnished to the applicant.