Abstract: An environmental control dike system comprising a plurality of precast sections, each having a rectangular metal frame with a top and a bottom horizontal member, a first vertical end member joining the top and bottom horizontal members, the first vertical end member at a first end of the frame having an extension which extends longitudinally beyond the top and bottom horizontal members, the extension having a plurality of spaced openings adapted to receive the shank of a bolt, and a second vertical end member joining the top and bottom horizontal members at a second end of the frame, the second vertical end member having a plurality of threaded openings such that one of the sections may be secured to an adjacent section by passing a bolt through the openings in the longitudinal extension at the first end of the concrete section and threadedly engaging the bolt in the threaded opening at the second end of the adjacent section; a plurality of vertical reinforcing bars, one end of the vertical reinforcing bars b