{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$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"
    }
  }
}