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1947 – Los Angeles Air Pollution Control District created; first air pollution agency in the US.1948 – Federal Water Pollution Control Act 1955 – National Air Pollution Control Act 1959 – California Motor Vehicle Pollution Control Board created to test automobile emissions and set standards.1963 – Clean Air Act 1964 – Wilderness Act 1965 – National Emissions Standards Act 1965 – National Emissions Standards Act 1965 – Solid Waste Disposal Act 1967 – Air Quality Act

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