Section R. 325.1603 - Definitions; G to MRule 103.
(1) "Geologic material" means all materials that are penetrated in drilling a well.(2) "Granular bentonite" means bentonite that has an approximate size range of 1/32 to 1/8 of an inch.(3) "Ground surface" means the intended or actual finished grade of the surface of the ground at the well site, which shall be consistent with the surrounding land surface.(4) "Groundwater" means the water in the zone of saturation that fills all of the pore spaces of the subsurface geologic material.(5) "Grout" means a material that has a low permeability, such as neat cement, bentonite grout, bentonite chips, bentonite pellets, granular bentonite, or other materials which have equivalent sealing properties and which are approved in writing by the department before use.(6) "Grouting" means the placement of grout into the annular space that surrounds a permanent casing for the purpose of sealing the annular space to prevent the entrance or migration of surface water, near surface water, and contaminants to the groundwater and to maintain the natural protection of aquifers.(7) "Health officer" means the administrative officer who is in charge of a full-time local health department or an authorized representative.(8) "Installation of pumps and pumping equipment" means the selection of, and procedure employed in the placement and preparation for operation of, pumps and pumping equipment, including any construction that is involved in making an entrance to the well and also means installing a pitless adapter, well cap, pump drop pipe, suction line, discharge line, water service line, or pressure tank.(9) "Liner pipe" means a permanent casing installed within another permanent casing or open borehole subsequent to initial construction of the well.(10) "Municipality" means a city, village, township, county, district, or other public body that is created by or pursuant to state law or any combination of such units acting cooperatively or jointly.Mich. Admin. Code R. 325.1603