Titanium tritide accelerator targets were encapsulated in several types of waste-disposal solidification media. The resulting monoliths were subjected to a standard leach testing procedure. A bare tritium target was also immersed in water and evaluated for tritium release. As anticipated, more tritium was released from the bare target than from the encapsulated targets, but not by a large factor. Of the encapsulating media tested, gypsum cement, coated and uncoated, performed slightly better than epoxy or microsilica cement. A gypsum cement-encapsulated target was also tested in air, and its tritium release was compared with that of the gypsum cement-encapsulated target which had been subjected to the leach test. Significantly more tritium was released from the specimen suspended in air. The results indicate that tritium can move through these barrier materials and may be released from an encapsulated target exposed to water or to air.