At the time set for hearing by the mayor, the mayor shall meet and hear the matter and receive evidence. The mayor shall find and determine whether a nuisance exists, and if so, what repair or alteration or other action is necessary to remove or abate the nuisance. The mayor shall also determine and find the length of time necessary to complete any such repair, alteration or other action, such time to begin to run upon the making of a determination of findings by the mayor. (Prior code § 6-2-9)