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REVIEW COMMENTS ON THE INITIAL DRAFT REPORT REMEDIAL z #` DEPOT, AT SHARPE ARMY • •. The following comments are based on the U.S. EPA's review of the initial draft RI/FS report, comparison of information presented in this report to previously submitted reports by SHAD, and evaluation of conclusions and recommendations presented by SHAD based on the results of the remedial investigation to date. These comments are organized according to the following format: ■ Maior comments -- These comments include U.S. EPA's most significant comments about the report and the remedial investigation process at SHAD. The issues presented here are critical because they impact the remedial investigation/feasibility study process necessitating additional data or analysis of the existing data. a Other comments -- These comments include , important issues that SHAD needs to respond to because of references to conclusions that are unclear or are based on assumptions. All the comments address the conclusions and interpretations of data represented by the findings in Sections 10.0 "Summary of Findings" and 11.0 "Recommendations". Page numbers refer to pages in the draft RI/FS report. Major Comments 1. In light of the Interagency Agreement that integrates the requirements of the resource Conservation and Recovery Act, as codified in 42 U.S.C. §6901 et seq., into Superfund cleanup at Sharpe Army Depot, U.S. EPA has documented a list of Solid Waste management Units (SWMUs) potential SWMUs, and Areas of Concern (AOCs). The list is provided in Attachment A. U.S. EPA has also depicted these SWMUs, potential SWMUs, and AOCs on a map, Attachment B. These areas are potential SWMUs or ADCs because waste generating activities or disposal have occurred there and were documented. Assessment of these is referred to as a RCRA Facility 1