3TAK ATOLL Runit (Yvonne) Cleanup and Crater Containment 469 QUALITY CONTROL AND RESULTS If there was an evident shortcoming in the construction portion of the project, it was in the quality control standards and procedures for the Cactus Crater container. Someareas of quality control were well executed. For example, directions and procedures for insuring that compression tests for concrete used in the keywall and dome were adequate, and the tests were documented.A total of 576 concrete cylinders were tested. The tests averaged 5,354 poundspsi with a high of 8,401 psi and a low of 3,298 psi, indicating a quality of concrete far exceeding the 3,000 psi design UCTURE. sal problem in the design 10 bags which solutions, the icies with a 1; however,it which had ‘tleans would Ich as lagoon e rejected on iuthorized to . Runit. The aterial they requirement. Penetrometer tests of the soil-cement reflected a bearing strength consistently in excess of the required 300 psi. On the other hand, no single individual was tasked with overall responsibility for assuring total compliance with the design specifications and adherence to the construction schedule or sequence, or for providing continuity, guidance, and supervision throughout the keywall and dome construction. DNA was designated, as the DOD Project Manager, to be the design and construction agent to supervise the execution of the project,!4! a task which normally would havefallen to the Corps of Engineers on a military construction project. In delegating responsibilities to Field Command, DNA was specific in the guidance for coordinating the preparations of plans and conducting the cleanup and assuring timely and adequate logistical support services.!42 However, there was no clear-cut delegation of the responsibility for providing professional civil engineer continuity, guidance, and expertise. Some at Field Commandbelieved that DNA had retained this overseer responsibility. Others felt that it would be exercised through the establishment of the JTG, with its engineering section, and the designation of an engineer officer to be the JTG commander. Consequently, formal procedures for exercising this technical civil engineering responsibility were not institutionalized. When specialized technical expertise was required, the JTG generally would request assistance from POD. Astremie operations were being completed in February 1979, HQ DNA tasked Field Commandto establish a quality control program for concrete and soil-cement in order to assure the durability of the containment structure for a long period of time.!43 The CJTG reported that a concrete . quality control program had been implemented in October 1978, and that concrete cylinders were being tested. !44 In the concrete quality control program, the need to establish a system of controls during the tremie phase was not adequately highlighted. As related earlier, some oversize material and debris were pushed by ‘bulldozer into the edge of the crater. Diver checks could not insure that . these materials were fully encapsulated in slurry or that a monolithic mass