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3 . 2 Bench Scale Studies (if needed; e.g. , for proposed <br /> water treatment actions) . <br /> 3 . 3 Contamination Assessment. <br /> 3 . 3 . 1 Interpretation of Field and Laboratory Data <br /> 3 . 3 .2 Evaluation of Extent of Contamination and <br /> Potential for Migration <br /> 3 . 3 . 3 Contaminant Migration Modeling (if <br /> applicable) <br /> 3 .4 Preparation of Remedial Investigation Report <br /> IV. Feasibility Study <br /> 4 . 1 Potential Site Specific Response Actions (See <br /> Section 2 .4) . <br /> 4 .2 Identification and Screening of Remedial <br /> Technologies. <br /> General Response Actions Technologies <br /> Excavation Limited excavation/ <br /> total excavation <br /> In-situ treatment Hydrolysis, <br /> oxidation, solvent <br /> washing, neutraliza- <br /> tion, chemical <br /> destruction <br /> Direct waste treatment Incineration, waste <br /> treatment, solidifi- <br /> cation <br /> Leachate control Capping, barrier, <br /> pumping <br /> Ground water contrcl Capping, barrier, <br /> pumping <br /> Surface water control Capping, diversion, <br /> grading, <br /> Air pollution control Capping, dust <br /> control, source <br /> removal <br /> 4 . 3 Formulation and Screening of Remedial <br /> Alternatives. <br /> 4 . 4 Detailed Analysis of Alternatives. <br /> 4. 4. 1 Conceptual Design of Alternatives <br />