Since what date has it been illegal to vent substitutes for chlorofluorocarbons (CFC) and hydrochlorofluorocarbons (HCFCs)?

The correct answer is November 15, 1995, as this date marks the implementation of regulations that prohibited the venting of substitutes for chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs). This regulatory action was part of a broader effort to protect the ozone layer, addressing the environmental damage caused by these substances.

By 1995, the impact of CFCs and HCFCs on ozone depletion had been well documented, leading to increased awareness and stricter environmental standards. As a result, the U.S. Environmental Protection Agency (EPA) established guidelines that aimed to phase out these harmful substances and minimize their release into the atmosphere. This prohibition on venting substitutes reinforced the commitment to reducing ozone-depleting substances and encouraged the use of safer alternatives.

The other dates provided do not correspond to the implementation of this specific prohibition. Early dates like January 1, 1990, and July 4, 1992, were significant in the timeline of environmental regulation but do not specifically mark the venting prohibition for these substances. Similarly, December 31, 1999, is positioned after the regulation was already established, which means it would not be the correct date