(C-31a) Cement concrete contractor

To mix aggregates, cement, and water in order to make acceptable concrete; to place and finish concrete including the setting of screeds and forms; to do tuckpointing and caulking of concrete block and pre-cast stone; to caulk metal to concrete and masonry; to cut, drill, saw, core, and pressure grout concrete; to do sandblasting, waterblasting, cleaning, sealing, and epoxy injection of concrete; and to perform spall repair;