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jan 1, 1990 - The Clean Air Act Ammendment of 1990 is passed

Description:

The amendment included the first national emissions trading program which created the cap-and-trade system for NOx and SOx.

Added to timeline:

maggie

ByMaggie Guinta

17 Nov 2017

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520

Date:

jan 1, 1990

Now

~ 35 years ago

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