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What’s the Difference Between Federal and California Emissions Standards?
California emissions standards are much stricter than those implemented by the EPA. The EPA is a federal government agency that oversees environmental protection matters. In 1970, congress passed the Clean Air Act (CAA). The law gives the EPA the authority to set nationwide vehicle emissions standards. But under one section of the act, California was granted the ability to seek a waiver from federal standards, thereby allowing the state to set its own stricter regulations.