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If lead-based exterior or interior paint is the only <br /> major contributor to exposure, no Superfund action or <br /> RCRA corrective action is warranted. <br /> If soil is the only major contributor to elevated blood <br /> lead, a response to soil contamination is warranted, <br /> but paint abatement is not. <br /> If both exterior lead-based paint and soil are major <br /> contributors to exposure, consider remediating both <br /> sources, using alternative options as described in <br /> Appendix A-2. <br /> If indoor dust levels are greater than soil levels, <br /> consider evaluating the contribution of interior <br /> . lead-based paint to the dust levels. If interior <br /> lead-based paint is a major contributor, consider <br /> remediating indoor paint to achieve a greater overall <br /> risk reduction at lower cost. (See Appendix A-2 . ) <br /> NOTE: Available authority to remediate lead-based paint <br /> under CERCLA and RCRA is extremely limited. ) <br /> Step 6: If the IEUBK model predicts elevated blood leads, rerun <br /> the model using the site-specific parameters selected <br /> to reflect remedial options in Step 5 to determine <br /> site-specific PRGs or MCSs for soil. <br /> A-3 <br />