Rule 41. A mobile home park or seasonal mobile home park shall be well drained. A pad, a sewage treatment and disposal system, a dwelling unit, and a park maintenance and service building shall be above the elevation of the contour defining the floodplain limits for a hypothetical flood having a recurrence frequency of once in about 100 years. No portion of a street that provides access to a site in a mobile home park or seasonal mobile home park shall be at an elevation lower than 1 foot below the elevation of the 100-year contour.
Mich. Admin. Code R. 325.3341