4 ' s - 8 - Reduction of dose by covering contaminated areas with imported uncontaminated soil from sources outside the atoll could introduce foreign plant disease and parasites. (* Before the discussion of soil addition becomes an established option in the DEIS or cleanup/rehabilitation plan, consideration should be given to the sources of the soil, i.e., where it will come from, and its effect (both as shielding and as soil for support of Eniwetok plant life). Is there evidence that it will remain in place for the time required, for example?) (5) Effects on Food Chains Soil manipulation procedures are likely to have direct impact on most terrestrial food chains. Direct destruction of vege- tation by these procedures is likely to be less important than the disturbance of surface soil relationships necessary for sustaining both animal and vegetative growth. In the case of at least some soil manipulation procedures (i.e., deep plowing) it appears possible that the long-term environmental costs of these procedures would significantly exceed the direct costs to conduct the procedure. , Alternative C - Cleanup of some areas This alternative is perhaps the most likely of the three. Specific criteria for cleanup actions and the environmental consequences of these actions can be derived by application of the relevant considerations of Cases A & B to individual areas, islands or groups of islands of the atoll. The desires of the Eniwetok people will have an important in- fluence on the selection of this alternative.