The Drinking Water Subcommittee completed its review of the document. The Subcommittee made the following conclusions and recommendations: there is insufficient evidence to justify the reclassification of styrene to EPA's category B2 and the Committee recommend continuation of the category C classification, the study by Quast et al should be discounted because it was less than a lifetime study and the metabolism in the dogs poorly understood, the rationale for choosing the study used to quantify the risk was unclear and needs to be more clearly articulated, all of the epidemiology findings should be included in the analysis, and the exposure section needs to be changed to more realistically reflect the existing situation.