Section R. 325.1601 - Definitions; ARule 101.
(1) "Abandoned water well" means any of the following: (a) A well which has its use permanently discontinued.(b) A well which is in such disrepair that its continued use for the purpose of obtaining groundwater is impractical.(c) A well which has been left uncompleted.(d) A well which is a threat to groundwater resources.(e) A well which is or may be a health or safety hazard.(2) "Act" means Part 127 of Act No. 368 of the Public Acts of 1978, as amended, being §§333.12701 to 333.12715 of the Michigan Compiled Laws.(3) "Annular space" means the space between 2 cylindrical objects, 1 of which surrounds the other, such as the space between a borehole wall and a permanent casing or between a temporary casing and a permanent casing.(4) "Approved basement" means a basement which has walls and a floor that are constructed of concrete or its equivalent, which is reasonably watertight, which is properly drained, and which is in ordinary daily use.(5) "Aquifer" means a subsurface water-bearing geologic material that transmits water in sufficient quantities to supply a well.Mich. Admin. Code R. 325.1601