This innovative structure was built to store 85,000 tons of fly ash produced during the winter months at the Coal Creek Power Station of Great River Energy. Recycled products such as fly ash and bottom ash were used whenever possible in foundation stabilization, flowable fill and ready mix concrete. This produced construction economies in addition to superior construction. The shotcrete dome was supported during construction through the innovative use of a blower inflated fabric reinforced PVC airform system attached to a concrete ring beam. In the final form, the dome was composed of layers of shotcrete, polyurethane foam insulation, and reinforcing steel. In all, 2,500 cubic yards of concrete were combined with 500 cubic yards of flowable fill to construct this unique project.