36.21.652    WELL SCREENS

(1) Well screens shall be constructed of one type of corrosion-resistant material.

(a) The choice of material should be selected on the basis of chemical analysis of the water or prior knowledge of the water quality.

(2) The well screen aperture openings, screen length and diameter should be selected to have sufficient open area to transmit the desired yield, at aperture entrance velocities of 0.1 feet per second or less.

(3) Where appropriate, suitable neoprene packers or cement grout shall be fitted to the top of the well screen assembly.

History: 37-43-202(3), MCA; IMP, 37-43-202(3), MCA; NEW, 1986 MAR p. 1699, Eff. 10/17/86.