Rule 1109. A permittee of a well shall ensure that warning signs have letters that are not less than 1 1/2 inches in height and that are legible under normal conditions at a distance of 25 feet.
Mich. Admin. Code R. 324.1109
Rule 1109. A permittee of a well shall ensure that warning signs have letters that are not less than 1 1/2 inches in height and that are legible under normal conditions at a distance of 25 feet.
Mich. Admin. Code R. 324.1109