The Toxic Substances Control Act of 1976 primarily regulates what?

• A. Production and use of chemical substances that may present an unreasonable risk of injury to health or environment
• B. Emissions from power plants
• C. Waste disposal practices
• D. Pesticide usage

Answer: (C)

The important idea is that this act gives the EPA authority to regulate chemical substances that may pose an unreasonable risk to health or the environment, covering the processes of production, processing, distribution, use, and certain disposal of those chemicals. It’s about evaluating and controlling chemical substances before they cause harm, not about general waste disposal or emissions alone.

So, among the options, regulating the production and use of chemical substances that may present an unreasonable risk best matches how this act operates. Pesticide use is primarily governed by FIFRA, waste disposal practices by RCRA, and emissions from power plants by the Clean Air Act.