The operator of a manufactured home park shall provide manufactured home lots of not less than 15,000 square feet of ground, with a minimum width of 75 feet, for each manufactured home on the premises. Each manufactured home lot shall front on, but be setback at least 20 feet from, an internal manufactured home park street, road, or right-of-way. Each manufactured home shall be so situated that there is a minimum of 30 feet between manufactured homes. In addition, each manufactured home lot shall be numbered with a suitable marker.