dfr024 is a JSON Structure definition published by EPA — U.S. Environmental Protection Agency, describing 13 properties. It conforms to the https://json-structure.org/meta/core/v0/# meta-schema.
{
"$schema": "https://json-structure.org/meta/core/v0/#",
"$id": "https://raw.githubusercontent.com/api-evangelist/epa/refs/heads/main/json-structure/echo-dfr-dfr024-structure.json",
"name": "dfr024",
"description": "Air Quality Object",
"type": "object",
"properties": {
"CarbonMonoxide1971Area": {
"type": "string",
"description": "Indicates the relevant National Ambient Air Quality Standards (NAAQS) nontattinment standard for Carbon Monoxide (1971).",
"example": "Billings Area, MT"
},
"Lead1978Area": {
"type": "string",
"description": "Indicates the relevant National Ambient Air Quality Standards (NAAQS) nontattinment standard for Lead (1978).",
"example": "Lewis & Clark County (part); City of East Helena and vicinity, MT"
},
"Lead2008Area": {
"type": "string",
"description": "If null, the facility is not located in a designated non-attainment area. If populated, the value is the name of the non-attainment area; normally this is a city or county name",
"example": "Washington, DC-MD-VA"
},
"NitrogenDioxide1971Area": {
"type": "string",
"description": "Indicates the relevant National Ambient Air Quality Standards (NAAQS) nontattinment standard for Nitrogen Dioxide (1971).",
"example": "Los Angeles-South Coast Air Basin Area, CA"
},
"Ozone8hr1997Area": {
"type": "string",
"description": "If null, the facility is not located in a designated non-attainment area. If populated, the value is the name of the non-attainment area; normally this is a city or county name",
"example": "Milwaukee-Racine, WI"
},
"Ozone8hr2008Area": {
"type": "string",
"description": "If null, the facility is not located in a designated non-attainment area. If populated, the value is the name of the non-attainment area; normally this is a city or county name",
"example": "Chicago-Naperville, IL-IN-WI"
},
"Ozone8hr2015Area": {
"type": "string",
"description": "Indicates the relevant National Ambient Air Quality Standards (NAAQS) nontattinment standard for 8-Hour Ozone (2005).",
"example": "Chicago-Naperville, IL-IN-WI"
},
"ParticulateMatter1987Area": {
"type": "string",
"description": "Indicates the relevant National Ambient Air Quality Standards (NAAQS) nontattinment standard for Particulate Matter (1987).",
"example": "Lake County; Cities of East Chicago, Hammond, Whiting, and Gary, IN"
},
"ParticulateMatter1997Area": {
"type": "string",
"description": "If null, the facility is not located in a designated non-attainment area. If populated, the value is the name of the non-attainment area; normally this is a city or county name",
"example": "Washington, DC-MD-VA"
},
"ParticulateMatter2006Area": {
"type": "string",
"description": "If null, the facility is not located in a designated non-attainment area. If populated, the value is the name of the non-attainment area; normally this is a city or county name",
"example": "Washington, DC-MD-VA"
},
"ParticulateMatter2012Area": {
"type": "string",
"description": "Indicates the relevant National Ambient Air Quality Standards (NAAQS) nontattinment standard for Particulate Matter (2012).",
"example": "Los Angeles-South Coast Air Basin"
},
"SulfurDioxide1971Area": {
"type": "string",
"description": "Indicates the relevant National Ambient Air Quality Standards (NAAQS) nontattinment standard for Sulfur Dioxide (1971).",
"example": "Lake County: (part), IN"
},
"SulfurDioxide2010Area": {
"type": "string",
"description": "If null, the facility is not located in a designated non-attainment area. If populated, the value is the name of the non-attainment area; normally this is a city or county name",
"example": "Washington, DC-MD-VA"
}
}
}