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additional most current BRA-related guidance documents. (Other OSWER directives <br /> for the selection of models used in the risk assessment are also available.) <br /> U.S. EPA. 1991. ECO Update: The Role of BTAGS in Ecological Assessment. Volume <br /> 1, No. 1. <br /> U.S. EPA. 1991. ECO Update: Ecological Assessment of Superfund Sites: An Overview. <br /> Volume 1, No. 2. <br /> U.S. EPA. 1992. ECO Update: The Role of Natural Resource Trustees in the Superfund -le <br /> Process. Volume 1, No. 3. n/ <br /> ]% e <br /> U.S. EPA. 1992. ECO Update: Developing a Work Scope for Ecological Assessments. <br /> Volume 1, No. 4. <br /> U.S. EPA. 1992, Framework for Ecological Risk Assessment. 630/R-92/001. <br /> U.S. EPA. 1992. Dermal Exposure Assessment: Principles and Applications. 600/8- <br /> 91/OO113. <br /> U.S. EPA. 1991. Risk Assessment Guidance for Superfund: Volume 1--Human Health <br /> Evaluation Afanual; Part C. Risk Evaluation of Remedial Alternatives. OSWER Directive <br /> 9285.7-01C. <br /> U.S. EPA. 1992. Guidance on Risk Characteri=anon for Risk Alanaoers and Risk <br /> Assessors. Habicht Memo. <br /> U.S. EPA. 1991. Human Health Evaluation Manual Supplemental Guidance: "Standard <br /> Default Factors." OSWER Directive 9285.6-03. <br /> U.S. EPA. 1989. Determining Soil Response Action Levels Based on Potential <br /> Contaminant Migration to Ground Water: A Compendium of Examples. 540/2-89-057. <br /> SPECIFIC COMMENTS <br /> 1. Page AB-2, Section 3.2 <br /> The suggested outline for development of the Detailed Risk Assessment Work Plan is <br /> contained in Appendix C of the Federal Facilities Agreement (FFA) with EPA, <br /> Defense Logistics Agency (DLA), and the State of California. This outline should be <br /> adhered to in putting together the work plan. <br /> "Chemicals of concern" referenced in this paragraph and in Section 3.4 should more <br /> properly be referred to as "chemicals of potential concern." <br /> Some of the applicable default PRGs are listed in documents referenced in General <br /> 2 <br />