Nonattainment Area

Extent of the DFW nonattainment area, which is currently comprised of the following 10 counties: Collin, Dallas, Denton, Ellis, Johnson, Kaufman, Parker, Rockwall, Tarrant, and Wise.DFW（达拉斯-沃斯堡，Dallas-Fort Worth）非达标区域的范围，当前涵盖以下10个县：科林县、达拉斯县、登顿县、埃利斯县、约翰逊县、考夫曼县、帕克县、罗克沃尔县、塔兰特县及怀斯县。