Service ItemId: c7e2c62560bd4a999f0e0b2f4cee2494
Has Versioned Data: false
Max Record Count: 1000
Supported query Formats: JSON
Supports applyEdits with GlobalIds: False
Supports Shared Templates: True
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Description:
ENVIRONMENTAL HEALTH HAZARD INDEX
Summary
The 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.
Interpretation
Values 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.
Related AFFH-T Local Government, PHA and State Tables/Maps: Table 12; Map 13.
References: https://www.epa.gov/ttn/atw/natamain/
To learn more about the Environmental Health Hazard Index visit: https://www.hudexchange.info/resource/4868/affh-raw-data/
Date of Coverage: 02/2018
Copyright Text: U.S. Department of Housing and Urban Development
Spatial Reference: 102100 (3857)
Initial Extent:
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XMin: -20287628.2210639
YMin: 2586688.44733075
XMax: -4219249.91578099
YMax: 7965981.18447996
Spatial Reference: 102100 (3857)
-
XMin: -19942590.5397
YMin: 2023662.7031
XMax: 20012847.4219
YMax: 11537127.3335
Spatial Reference: 102100 (3857)
Child Resources: Info SharedTemplates
Supported Operations: Query ConvertFormat Get Estimates Create Replica