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ENVIRONMENTAL HEALTH HAZARD INDEXSummaryThe environmental health hazard exposure index summarizes potential exposure to harmful toxins at a neighborhood level. Potential health hazards exposure is a linear combination of standardized EPA estimates of air quality carcinogenic (c), respiratory (r) and neurological (n) hazards with i indexing census tracts.Where means and standard errors are estimated over the national distribution.InterpretationValues are inverted and then percentile ranked nationally. Values range from 0 to 100. The higher the index value, the less exposure to toxins harmful to human health. Therefore, the higher the value, the better the environmental quality of a neighborhood, where a neighborhood is a census block-group.Data Source: National Air Toxics Assessment (NATA) data, 2011. Data Current as of: 2/22/2017References:http://www.epa.gov/ttn/atw/natamain/

Dataset Attributes

  • OBJECTID
    Number
  • GEOID
    Text
  • STATE
    Text
  • COUNTY
    Text
  • TRACT
    Text
  • Index Score
    Number
  • Shape__Area
    Number
    0.931640625 to 1775133682304.45
  • Shape__Length
    Number
    7.95682771492287 to 12774487.7815424

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