Shallow land burial of sodium-bearing low-level wastes requires an assessment of safetyconsequences relating to (1) groundwater interactions with the residual sodium in the event of a breach of containment and (2) release of tritium dissolved in sodium along with hydrogen (both of which will permeate through adjacent soil). This paper describes the tests and evaluations being performed to establish a data base on safety consequences of burying low-level radioactive sodium wastes (RSW). This data base can be used in establishing the amounts of sodium that may be tolerated in burying RSW and in establishing related criteria.