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Before 1970, no law was passed that limited the amount of gases that companies could produce through their practices. However, this changed with the Clean Air Act of 1970.
This act did multiple things to protect the environment, most importantly acting as a comprehensive federal law that regulated state gas emissions by both industrial and mobile companies. Later amendments in 1990 also addressed issues around acid rain and ozone depletion
This important legislation affected all companies, as well as having positive impacts on the environment and the health of the common man. Finally, it was established close in time to the EPA, proving a great push for a cleaner, more healthy world.
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