Pr ~ 467 t and Crater Containmen Runit ( yvonne) Cleanup ad Aes? Ye> a RSL Se , - - . . bs s : 4 FIGURE 8-51. CACTUS CRATER EXTENSION. them in concrete bunkers, !37 Field Commandestablished a disposalpolicy for any additional red debris on 17 December 1979.!38 Red debris was to be - encapsulated in another section to be added to the lagoon side of the Cactus Crater extension. The new section would be designed to hold all red debris on hand and any additional debris that might appear through March 1980, and would be capped with an 18-inch concrete cover. Red debris would be collected and stockpiled until mid-February, at which time the USAE would construct the container and encapsulate the debris on hand. Space would beleft unfilled to allow for encapsulation of any debris discovered after military forces were drawn downin February. At the end of March, just prior to project completion, the base support contractor would encapsulate any debris on hand and cap the new annex, conforming with the design and aesthetics of the previous extension. The second extension was constructed in February 1980 and consisted of approximately 13 cubic yards of space. Approximately 4 cubic yards of red debris were enclosed and slurried in place. On 3! March 1980, H&N returned to Runit, encapsulated an additional cubic yard of debris which had been collected in the interim, and capped thefacility (Figure 8-52).