{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "", "description": "In 1977 Congress amended the Clean Air act to include provisions to protect vistas in certain Class I federal areas. In 1979 the Environmental Protection Agency, in consultation with the Secretary of the Interior, promulgated a list of 156 mandatory Class I federal areas. Eight mandatory Class I federal areas are located in Washington. This abbreviated version of NDMPL is for five wilderness areas and three national parks and is used as boundaries for Class-1 Air pollution control areas by the Washington State Dept. of Ecology Air Program.", "summary": "", "title": "Class 1 Airsheds", "tags": [], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 0, "maxScale": 0, "spatialReference": "", "accessInformation": "", "licenseInfo": "" }