If the person having been ordered to abate the public nuisance fails, neglects or refuses to abate or remove the condition constituting the nuisance within 15 days from receipt of the order, then the city manager shall cause the condition to be re-moved or otherwise remedied by having em-ployees of the city go upon the premises and remove or otherwise abate the nuisance under the supervision of an officer or employee designated by the city manager. Any person who has been ordered to abate a public nuisance may, within the time allowed by the order, request the city in writing to remove the condition, the cost of which shall be paid by the person making the request. (Ord. of 7/13/71. Sec. 1(d). revised)