Geologic repositories for disposal of high level nuclear wastes are required to be licensed by the NRC. Requirements for licensing are contained in 10CFR60 which sets specific performance requirements on the waste package and on the engineered barrier system. EPA regulation 40CFR191 sets requirements on the cumulative release of radionuclide's to the accessible environment from the repository system. As a subelement of the waste package, the engineered barrier system, and the overall repository system, the waste form plays a role in satisfying these regulatory requirements, and consequently, the regulatory requirements result in derivative requirements on the waste forms and indicate the need for waste form specifications and tests to demonstrate compliance. A waste form which cannot be shown to be in compliance with regulatory requirements with reasonable assurance will not be acceptable for disposal in a geologic repository. Thus, waste acceptance is intimately and inseparably related to repository licensing.