The polygon shapefile represents the boundaries of airport overflight zones in Placer County California. This layer is part of a collection of public geospatial datasets produced by the Placer County GIS Division. Placer County Geographic Information Systems. (2020). Tahoe Truckee Airport District, Placer County, California, 2020. Placer County Geographic Information Systems. Available at: https://purl.stanford.edu/zz366mp8917 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.