It shall be the duty of the Chief of Police to give written notice to the registered owner of any motor vehicle or motor vehicle trailer which is in violation of this chapter, as described in Section 8.20.010, and to further give such notice to the owner or lessee of the private land upon which such motor vehicle or motor vehicle trailer is situated, giving notice that such vehicle violates the ordinance codified in this chapter, and demanding that such motor vehicle or motor vehicles be removed from the city within seventy two hours, or that within seventy two hours the same is to be housed within an enclosure where it will not be visible from a street or adjacent property. Such notice may be given by personal service or by registered mail with return receipt requested.