50 IWAN a Ch bit OU td a a a and the nextfor visiting and food gathering (Figure 2-2), !05 The cleanup andrehabilitation alternatives considered in the DEIS were based on three possible cleanup actions and four habitation plans. The cleanup actions were identified as: I, WN. No cleanup. Removal of all hazardous, obstructive, and radioactive scrap; plutonium concentrations greater than 400 pCi/g from four islands, Lujor (Pearl), Aomon, Boken, and Runit; and other soil with plutonium concentrations between 40 and 400 pCi/g on a wm > II]. C. D. case-by-case basis. Extensive cleanup of residential and agricultural islands. The four habitation plans were identified as: Norestrictions on island or food usage. Live on southern islands and Enjebi; visit northern islands; use food from southern islands or Enjebi, plus coconuts from 12 northeast islands, and pandanus and breadfruit from Enjebi farm plots or imported. Live on southern islands; visit northern islands; use food from southern islands plus coconuts from 12 northeast islands. Live on southern islands; visit southern islands only; use food grown on southern islands only. © : Habitation Residence Plan Islands A au? Southern islands and Enjebi B BUA egy WE LI Ugidbiisiiiiig There were 12 possible combinations of cleanup actions and rehabilitation plans. Some were found to be incompatible, and others were rejected for basic deficiencies. Of those remaining, a matrix was constructed (Figure 2-3) to show a reasonable range ofalternatives. Five representative combinations were chosen for detailed analysis of dose reduction, health effects, cost, and general acceptability. The five cases (shown in Figure 2-3) are described briefly as follows: Case |: No cleanup; use ofall islands without restriction as indicated in the 1973 Master Plan. This case was rejected as it would expose the people to all of the radiological and physical hazards existing in the atoll. Case 2: No radiological cleanup; removal of physical hazards and obstructions to use on the southern islands, Jinedro! (Alvin) through Kidrenen (Keith); residence on the southern islands only; use of food grown on only southern islands. This case was rejected as it did not permit eventual use of the northern islands. Case 3: Removal of hazardous and obstructive scrap fromall islands and removal of an estimated 79,000 cubic yards of plutonium concentrations from Boken, Lujor, Aomon, and Runit (Figure 2-4); disposal of contaminated debris and soil by one of several options including crater containment; residence on southern islands only; use only coconuts from northern islands. (Enjebi was regarded as a special case by the AEC Task Group, and Case 3 did not include removal of plutonium concentrations in Food Sources Agriculture Islands Hatetation Plans Foods® ane an Southernislands Alf Enjebi ) aA AN islands used in eccordance 8 Live on Emebi and southern c Live on southern isiends; use o Live on southern relents, une wrth Enteretah Master Pian lalanci, use food grown on only coconut from nothern tood gown on only southern Enyebi; vee pencdanve endl braadtruit grown only in forming plots on Enyabi o¢ intends sslercdé Cleanup Actiom 1) No cleanup (1) Pandanus and Breadfruit® wa imported te Enyebi Cust Cou 7 AEC Opnen 1? AEC Option I Removal of hezardout and Cove 4 Cans 3 obtteuctiwe fom adiqgctive AEC Opnon iv AEC Option tH scrap and redrosctive scrap hom all itlandt, Removal Tyee emmeE of Pu concentrations from Cc D ; Southern islands Southern islands Southern islands Northernislands Southern islands Coconut only 1 Extentive desnyp of reudencte afd agicvlture semntoiechtniisibeataniussea sei dose reductions equivalent to or less than the AEC criteria, Figure 2-1, “Foods grown in farming plots produced by removing radioactive soil and replacing it with nonradioactive soil in sufficient volume to contain mature root systems of these plants. FIGURE 2-2. EXPLANATION OF HABITATION PLANS. Cue 5 Appraximetely AEC Optran V itlands & All 3Foods grown in existing soil, except where noted. , four intends © . All 4 Report by the AEC Test Group of Recommendations for Cleanup and Hehabrliteion of Enewetak,” June 19, 1874 6 Case 2 dttets trom other progremt in Row | by ramovel of physical hererd enc obstructive debe categories of radiosctive and nonradroactrve 1crap on ee © Plutonium concentranons refer to burial grounds and soil dapernons of concentration in enceof 40 pCi/g Areay of yor! concentration in qucess of 400 pOr/g should be removed without question; erest of 20!) concentranon between 40 and 400 pCi/g should be considered on an ndrndual bans 4 Removalof alt serep trom ofl reudence atands wecitied in sech calumn end remoral af ypecihic amounts of soil in ipecific erga Io achieve external and internat dows no greeter than would be sbsarbed from naqurally orcurring wurces FIGURE 2-3. ALTERNATIVE CLEANUP AND HABITATION PROGRAMS.