Sediment contamination is a widespread environmental problem that can potentially pose a threat to a variety of aquatic ecosystems. The sediment test methods in this manual will be used by The United States Environmental Protection Agency (USEPA) to make decisions under a range of statutory authorities concerning such issues as: dredged material disposal, registration of pesticides and toxic substances, superfound site assessment, and assessment and cleanup of hazardous waste treatment, storage, and disposal facilities. The use of uniform sediment testing procedures by USEPA programs is expected to increase data accuracy and precision, facilitate test replication, increase the comparative value of test results, and ultimately, increase the efficiency of regulatory processes requiring sediment tests.

Increasingly used to analyze and manage marine and coastal zones, Geographical Information Systems (GIS) provide a powerful set of tools for integrating and processing spatial information. These technologies are increasingly used in the management and analysis of the coastal zone. Supplying the guidance necessary to use these tools, GIS for Coastal

AQUATOX: Modelling Environmental Risk and Damage Assessment, a new volume in the Developments in Environmental Modelling series, provides a single source for all AQUATOX applications, including basic equations, applications and examples on model implementation in various aquatic habitats (riverine, lacustrine and estuarine). The book presents a comprehensive reference source for AQUATOX model applications that can be used for an ecological modeling course at the graduate level. Throughout the text, chapter headings are organized to help users understand model building processes, state variables, and components. Case studies are provided to enhance learning and help readers assemble and calibrate their own AQUATOX applications. Includes a detailed description of AQUATOX equations for researchers and practitioners (including regulatory agencies) Presents study files, descriptions of implementation, and the data used as a starting point for new study applications Explores case studies of various sample applications and how specific problems are approached, including eutrophication issues in lakes and streams and natural resource damages in Estuarine Areas

The introduction and rapid spread of the zebra mussel in North American waters has caused great concern among industrial and recreational users of these waters. This bivalve mollusk is a biofouler that attaches to any firm substrate (e.g. rocks, piers, water intake pipes, boat hulls) and has already created significant problems for raw water users such as water treatment plants and power plants. Zebra Mussels: Biology, Impacts and Control provides essential information regarding the biology of the zebra mussel in North America and Europe, presents case studies of environmental and industrial impacts, and outlines control strategies. Summary articles detail its life history, origins, and morphology. The book also examines techniques used to culture and maintain this organism in the laboratory. Thirty-two color plates illustrate some of the dramatic problems created by the explosive population growth of this species. Zebra Mussels: Biology, Impacts, and Control is an important resource for ecologists, conservationists, environmental consultants, water quality engineers, regulatory officials, power utilities, and libraries.