190. The Planimetric geodatabase (vector) contains feature classes with coincident boundaries. These feature classes are represented as polygons and inc...
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2010. This polygon layer represents the R. Regan Washington National Airport Runways, tarmacs and associated paved areas in Arlington County, VA 2010.
1993. The Airport Impact (AI) Overlay District is a zoning overlay district administered by the Loudoun County Department of Building and Development. T...