| Abstract |
A screening-level multimedia model called TOX-SCREEN has been developed to assess the potential fate of toxic chemicals released to air, surface water, or soil. Four types of surface water bodies are considered: lakes, rivers, estuaries, and oceans. TOX-SCREEN was developed at the request of the U.S. Environmental Protection Agency (USEPA) to provide a means by which chemicals classified under Section 4 of the Toxic Substances Control Act (TSCA) can be rapidly evaluated with respect to their potential for accumulation in environmental media. The model is simplified in nature and is intended to be used as a screening device to identify chemicals that are unlikely to pose problems under conservative assumptions. The purpose of this report is to provide a user's manual for the FORTRAN IV computer code, TOX-SCREEN, which implements the multimedia model. A brief description of the model assumptions and structure is included. The structure of the TOX-SCREEN program and individual subroutines are described in detail. Input to and output from the code are thoroughly explained. Parameter definitions, sample job control language, sample input data, output from TOX-SCREEN using the sample input data, and a listing of the program are provided in appendixes. |
