Includes bibliographical references and index.

Acquisition and use of science at EPA -- Science inside EPA : Office of Research and Development -- Science inside EPA : the regulatory programs -- An evaluation -- Policy proposals -- Appendix A: the 1991 lead/copper drinking water rule -- Appendix B: the 1995 decision not to revise the arsenic in drinking water rule -- Appendix C: the 1987 revision of the national ambient air quality standard for particulate matter -- Appendix D: the 1993 decision not to revise the national ambient air quality standard for ozone -- Appendix E: the 1983-1984 suspensions of ethylene dibromide under the Federal Insecticide, Fungicide and Rodenticide Act -- Appendix F: the 1989 asbestos ban and phaseout rule under the Toxic Substances Control Act -- Appendix G: control of dioxins and other organochlorines from the pulp and paper industry under the Clean Water Act -- Appendix H: lead in soil at Superfund mining sites -- Appendix I: list of interviewees and commenters -- Appendix J: science at EPA interview guides -- Appendix K: list of acronyms.