<Li> Oregon - Indoor Clean Air Act - Statutes on Smoking in Indoor Workplaces and Within 10ft of an Entrance </Li> <Li> Texas - Drive Clean Across Texas </Li> <Li> Virginia - Virginia Clean Cities, Inc . </Li> <P> Air pollution often travels from its source in one state to another state . In many metropolitan areas, people live in one state and work or shop in another; air pollution from cars and trucks may spread throughout the interstate area . The 1990 Clean Air Act provides for interstate commissions on air pollution control, which are to develop regional strategies for cleaning up air pollution . The 1990 amendments include other provisions to reduce interstate air pollution . </P>

The clean air act of 1970 is an example of