Section R. 325.1605 - Definitions; R to TRule 105.
(1) "Recharge well," as used in section 12701 of the act, means a well used to discharge groundwater into an aquifer.(2) "Static water level" means the distance measured from the ground surface to the water surface in a well that is neither being pumped nor under the influence of pumping.(3) "Suction line" means a pipe or line that is connected to the inlet side of a pump or any pipe or line connected to a casing or pump which is or may be at less than atmospheric pressure (0 psig).(4) "Sump" means a shallow excavation into the ground in which the side walls may be supported by material other than steel casing. Water may enter the sump by drainage over the ground or by seepage through the side walls and bottom.(5) "Surface water" means water that rests or flows on the surface of the ground.(6) "Temporarily abandoned well" means a well that is not in use, but intended by the owner to be used as a source of groundwater.(7) "Temporary casing" means durable pipe placed or driven into a borehole to maintain an open annular space around the permanent casing during construction of a well.(8) "Test well," as used in section 12701 of the act, means a well that is used to obtain information on groundwater quantity, quality, or aquifer characteristics for the purpose of designing or operating a water supply well.Mich. Admin. Code R. 325.1605