Introduction (J.V. DePinto, W. Lick, and J.F. Paul). EPA/ORD Role and Perspective in Sediment Research (N.A. Thomas). Lessons Learned from Siting of Boston Harbor Sewage Outfall (J.F. Paul and E.H. Dettman). The Flocculation, Deposition, and Resuspension of Fine-Grained Sediments (W. Lick). In-Situ Measurement of Entrainment, Resuspension, and Related Processes at the Sediment-Water Interface (K.W. Bedford). Impact of Physical Processes at the Sediment/Water Interface in Large Lakes (P.G. Sly). Partitioning of Toxic Metals in Natural Water-Sediment Systems (H.E. Allen). Reactions of Trace Elements Near the Sediment-Water Interface in Lakes (A. Tessier, R. Carignan, and N. Belzile). Partitioning of Organic Chemicals in Sediments: Estimation of Interstitial Concentrations Using Organism Body Burdens (V.J. Bierman, Jr.). Predicting Metals Partitioning during Resuspension Events (J.V. DePinto, T.L. Theis, T.C. Young, and S.T. Leach). Biological and Chemical Mechanisms of Manganese Reduction in Aquatic and Sediment Systems (C.R. Myers and K.H. Nealson). The Transport of Fine-Grained Sediments in the Trenton Channel of the Detroit River (C.K. Ziegler, W. Lick, and J. Lick). Sediment Transport in Shallow Lakes-Two Case Studies Related to Eutrophication (L. Lijklema, R.H. Aalderink, G. Blom, and E.H.S. Van Duin). Parameterizing Models for Contaminated Sediment Transport (J.S. Bonner, A.N. Ernest, R.L. Autenrieth, and S.L. Ducharme). The Effects of Sediment Mixing on the Long-Term Behavior of Pollutants in Lakes (D.N. Edgington). Research Needs and Summary (J.F. Paul, J.V. DePinto, and W. Lick).