Predictably, the macro-encapsulation methodology is limited to larger waste debris types. Hazardous waste debris is entrapped within a one-piece structural unit, typically a concrete shell. The shell is both filled and sealed with a solid material, such a cement kiln dust or fly ash. As with micro-encapsulation, once this process is complete the entire structure will also need to be transported and landfilled at a RCRA subtitle C hazardous waste disposal facility.