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Start Over You searched for: Year 2004 Remove constraint Year: 2004 Resource Type Polygon data Remove constraint Resource Type: Polygon data Creator California. Air Resources Board. Planning and Technical Support Division Remove constraint Creator: California. Air Resources Board. Planning and Technical Support Division

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2004. California. Air Resources Board. Planning and Technical Support Division and Stephen P. Teale Data Center (Calif.). The California Air Basins layer is a polygon shapefile coverage representing the 15 California air basins, as defined in state statute and regulati... California. Air Resources Board.