This report details a mathematical model for the surface disposal of processed shale from a commercial-sized shale oil facility. The model is comprised of three segments: conveyance, landfill, and reclamation. Each segment is mathematically described in terms of its inputs, outputs, capital and operating costs, utility consumption and emissions. These equations are written in the form required by the materials-Process-Product model (MP P"'J). The model is specific for the physical characteristics of processed shale, the commercial plant's production capacity, and the environmental responsibilities demanded of the industry. The present lack of a commercial-sized processing plant as a design model dictates that many of the constants in the module be estimated. Sample calculations and an equipment list are provided for a disposal operation scaled to a 50,000 BBL/D TOSCO II plant producing 70,000 tons per day of spent shale. Lastly, the sensitivities of the primary MPPM variables are briefly examined.