Toxic Substances Control Act TOSCA

The herbicide compounds 2,4-D and 2,4,5-T, found to be 280 and 610 ppm in the feedstock, respectively, were also destroyed during the process to levels less than detectable, which were 0.01 ppm. 2,4,5/2,4,6-trichlorophenol and 2,4-dichlorophenol, found at 55 ppm and 10 ppm in the feedstock, were destroyed to levels less than detectable, which were 1 ppm. Chlorinated organic pesticides and PCBs were not detected in the feedstock hence, destruction could not be evaluated. Earlier AER tests conducted by Huber on the destruction of PCBs and carbon tetrachloride in soil for Toxic Substance Control Act (TOSCA) and Resource Conservation and Recovery Act (RCRA) permits have shown the process to be highly effective. 

The Toxic Substances Control Act (TSCA or TOSCA) Environmental Protection Agency developed rules to limit manufacture and use of PCBs. 

The purpose of this chapter is to summarize and generalize the various pollution, health, and environmental problems especially specific to the chemical industry and to place in perspective government laws and regulations as well as industry efforts to control these problems. A brief survey of air and water pollution problems will be given, but these are characteristic of all industry and the topics are too vast to be covered adequately in this book. We will be more concerned with toxic chemical pollution and its control and will spend some time on the Toxic Substances Control Act (TSCA, TOSCA) of 1976 and the Toxic Release Inventory (TRI) list begun in 1988. 

The Toxic Substances Control Act (TSCA or TOSCA) was initiated. It has far-reaching effects specifically for the chemical industry and will be discussed in detail in the next section. An immediate effect that it had was to direct the EPA to develop rules to limit manufacture and use of PCBs. 

As risk assessment becomes more sophisticated and is extended to more chemicals, it will also be extended to smaller and smaller risks. Since it is not possible to regulate all risks, an important use of risk analysis must be to decide which chemicals should be regulated and to what degree. Under the Tbxic Substances Control Act (TOSCA), all new chemicals must be considered. The prioritization scheme for chemical testing is based upon a set of dichotomous criteria, toxicity, chemical reactivity, etc., which involve qualitative rather than quantitative risk analysis. As procedures for more quantitative analysis become available, the prioritization scheme will become more precise, (NAS/NRC, 1984). 

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