The document outlines several key environmental laws and regulations, including the Toxic Substances Control Act (TSCA), Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), Safe Drinking Water Act (SDWA), and Clean Air Act (CAA). It details the mechanisms for evaluating risks of chemicals, establishing standards, enforcement proceedings, and penalties for non-compliance. Recent issues highlighted include criminal liabilities associated with hazardous substances and ongoing pollution challenges in communities like Hinkley, California.