Section R. 560.428 - Plat approval or rejectionRule 428.
(1) Within 30 days of receipt of the preliminary plat, the department shall issue a written approval or rejection to the proprietor.(2) Before issuing a rejection for the suitability of an on-site water supply or a sewage disposal system, the department shall have information that site conditions are not suitable for the development of an on-site water supply or a sewage disposal system that complies with these rules.(3) The department shall reject a development site less than 1 acre in size or a preliminary plat if any of the following provisions apply: (a) There has been a failure to provide for connection to an available public sanitary sewer required by the municipality for a development site that is less than 1 acre in size or subdivision.(b) The site conditions are not suitable for on-site sewage or on-site water systems where 1 or both is proposed.(c) Information submitted is not sufficient to make a determination as to the suitability of conditions for on-site water supply or on-site sewage disposal.(d) The department determines that submitted information is in error with respect to on-site water supply or sewage disposal in accordance with these rules.Mich. Admin. Code R. 560.428