25 Pa. Code § 236.313
(b) The disposal facility shall have sufficient capacity to accommodate at least a 30-year useful facility life, as required by the Appalachian State Low-Level Radioactive Waste Compact. Design consideration for disposal capacity shall be based on reasonable waste projections and be capable of accommodating unanticipated changes in waste streams or volumes.
2(c) The disposal facility shall be capable of accommodating low-level waste streams with different physical and chemical properties.