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1 <br />' 2.2 Modeling Results <br /> The results of the modeling are presented .Ln. Appendix D and summarized in Table 4 For <br /> comparison, maximum contaminant levels (MCLs) for each chemical are included (if <br /> available) in the table These criteria are for comparison purposes only because the <br /> ' concentrations predicted by the modeling are representative of the pore water immediately <br /> before reaching the groundwater rather than the groundwater itself <br /> ' The results show that none of the VOCs detected in the soil are expected to reach the <br /> groundwater at levels greater than their respective drinking-water standards Table 4 <br /> includes the estimated concentrations in soil solution based on the modeling <br /> It should be noted that the concentration of each chemical in groundwater would be <br /> expected to be much lower than the estimated concentrations (presented in Table 4), for <br />' the following reasons <br /> • The modeling does not account for any losses that would occur from either <br /> ' biological or nonbiological processes In reality, such losses, especially over the <br /> many years predicted to be necessary for groundwater to become impacted, are <br /> likely to significantly reduce the concentrations of these chemicals or even <br /> ' entirely prevent them from reaching groundwater <br /> • If these chemicals ever reach groundwater, their concentrations will be <br /> significantly reduced below the concentrations predicted The concentrations <br /> predicted by the model are the concentrations in the soil-pore liquid ,lust above <br /> the water table Upon reaclung the water table, these levels will be reduced by <br /> ' mixing with the water in the saturated zone <br /> 1 <br /> 1 <br /> I\PJ21RXK00285 DOC-95111c 1 Rev 0 8128195 <br /> 22074-001 001 2-2 <br />