116 RADIOLOGICAL CLEANUP OF ENEWETAK ATOLL Planning and Programming 117 MOBILIZATION * MAT. /SUPPLIES CS PROCURE SHIP | ALEMBEL J) BILLAE EQUIP. ; PROCURE SHIP il | CONSTRUCTION BASE: CAMP ' REMOTESITE CLEAN UP TEAM A TEAM B " i TEAM C UNIBOR ' t > DEMOBILIZATION . | ( _t 3 Zz A. BoKO SY. MUNIOR \ INEDRAL JIMEOROL a AMANIJ BIKEN see+—jae fone Southwag! Paccage Containment would be accomplished by mixing contaminated soil, cement, and salt water into a slurry and pumping the mixture through pipes to a tremie barge, then to the bottom of the crater. By keeping the discharge end of the tremie pipeat least | foot beneath the top surface of the previously placed slurry, a monolithic mass would be accumulated, gradually displacing the water from thecrater. All contaminated debris was to be removed from theislands and encapsulated in the slurry during this phase. When the water becametoo shaliow to float the barge, the tremie operation would stop and the slurry line would be held by a crane moving slowly around to form a mound. During the inactive periods in the containment operation, Team C personnel would assist Team B in their cleanup of Runit, the last and largest soil cleanup operation. After all contaminated debris and soil had been contained, a cleanup of the containment site would be conducted to assure that afl contaminated material was in the container before the concrete cap was begun.. The container would be covered with an 18-inch-thick concrete cap. Once the - with noncontarminated ! material to provide a structure moreresistantto the effects of the sea. 248 ! taken from the Enewetak Engineering Study and adjusted for such factors I 1 y RUMIT ———— 9 JEDROL FIGURE 2-7. OPERATION SCHEDULE (MONTHS). : Ocean DREKAFIMON TEAM G P Be Hog a5 > The CONPLAN cleanup schedule was based on man-hour estimates as weather, radiological safety, and emergencies.24? The concept planners estimated that cleanup of all plutonium contamination over 40 pCi/g on Il en" O2/ JAPTAN Seep Entrance * MEBREN SS | g peic\ arts?” RISEWO Ocean BOKER yy BOKANDRETOK “ EWEWETAK (BASE CAMP TEAM A) ew 2 4 NAUTICAL 5 MILES FIGURE 2-8. ARMY ENGINEER TEAM ASSIGNMENTS. islands would require removal of 125,000 cubic yards of soil.250 Th recognized the many uncertainties in their estimates and the many unknowns in the mission, especially the radiological cleanu . Consequently, theyset no fixed dates but provided only a general estimat e for project completion. CONPLAN estimates ranged from 2] to 25 months for cleanup operations, including demobilization of base camps. 251.252 SUPPORT ELEMENTS The Joint Staff planners attempted to distribute the Enewetak project tasks among the Services as equally as possible while retaining unit