Specifications and invitations. 3955. Pumping units for D-1.4E-0.5, D-7.4E-1.5, D-1.4E-2.6, D-9.7, D-12.4, WM 3.4 and WM 5.4 pumping plants unit 1, Dome Distribution System, Wellton-Mohawk division, Gila project, Ariz.