Any owner who wishes to dispute the cost of weed control which has been carried out on his land may request a hearing before the director of public services. The owner shall file, with the director of public services, a request in writing for a hearing within twenty days after the city has mailed the demand for payment to the owner. The hearing shall be conducted within thirty days after receipt of the request for hearing. The hearing shall be conducted informally and the formal rules of evidence shall not apply. The director of public services shall listen to whatever witnesses the owner might wish to call and the director of public services shall, at the conclusion of the hearing, determine whether or not the costs assessed were proper. Such determination shall be final unless that determination is appealed to a court of competent jurisdiction within ten calendar days of the rendition thereof. (Ord. 82-25 §8, 1982).