Name: EPA_Texas_Air_Toxics_Cancer_Risk_Sources_2011

Display Field: GEOID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: NATA assembles information on air toxics, characterizes emissions, and rioritizes air toxics and locations that merit more refined analysis and investigation. This information is used to plan, and assist with the implementation of, national, regional, and local efforts to reduce toxic air pollution. Using general information about sources to develop estimates of risks, NATA provides screening-level estimates of the risk of cancer and other potentially serious health effects as a result of inhaling air toxics. The resulting risk estimates are purposefully more likely to be overestimates of health impacts than underestimates, and thus they are health protective.NATA uses emissions data compiled for a single year as inputs for modeling ambient air concentrations and estimating health risks. Results include estimates of ambient concentrations and exposure concentrations (ECs) of air toxics and estimates of cancer risks and potential noncancer health effectsassociated with chronic inhalation exposure to air toxics. The estimates are generated within each state,at both county and census-tract levels.NATA provides a “snapshot” of outdoor air quality and the risks to human health that might result if air toxic emission levels were to remain at the same levels as those estimated for the assessment year. The estimates reflect only risks associated with chronic (relatively long-term) exposures to the inhalation ofair toxics at the population level. The assumptions and methods used to complete the national-scale assessments limit the types of questions that NATA can answer reliably. NATA results are useful for prioritizing air toxics and emission sources, identifying locations of interest that require additional investigation, providing a starting point for local-scale assessments, focusing community efforts to reduce local emissions of air toxics, and informing the design of new monitoring programs or the re-design of existing ones. NATA results also can provide general answers to questions about emissions, ambient air concentrations, and exposures and risks across broad geographic areas (such as counties, states, the nation) at a moment in time. Disclaimer: This product is for informational purposes only and may not be suitable for legal, engineering, or surveying purposes. It does not represent an official survey and represents only the approximate relative location of features and boundaries. Mapping may not necessarily reflect on-the-ground conditions. This product and those involved in its production make no claims as to the accuracy or reliability of the data, and neither assumes, nor will accept liability for their use.

Copyright Text: EPA

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -1.1911568267977474E7
YMin: 2955374.186695837
XMax: -1.0374417177587165E7
YMax: 4377521.93434774
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Class Breaks Renderer:
Field: Total
Min. Value: 16.963
ClassBreakInfos:
• Class Maximum Value: 40
  Label: ≤40 (Below National Average Cancer Risk)
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [245, 245, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
• Class Maximum Value: 96.272
  Label: >40 (Above National Average Cancer Risk)
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [245, 122, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• GEOID ( type: esriFieldTypeString, alias: GEOID, length: 11 )
• COUNTY ( type: esriFieldTypeString, alias: COUNTY, length: 50 )
• Pop ( type: esriFieldTypeDouble, alias: Pop )
• Total ( type: esriFieldTypeDouble, alias: Total )
• Point ( type: esriFieldTypeDouble, alias: Point )
• NoPoint ( type: esriFieldTypeDouble, alias: NoPoint )
• OR_Mob ( type: esriFieldTypeDouble, alias: OR_Mob )
• NR_Mob_NP ( type: esriFieldTypeDouble, alias: NR_Mob_NP )
• NR_Mob_P ( type: esriFieldTypeDouble, alias: NR_Mob_P )
• Biogenics ( type: esriFieldTypeDouble, alias: Biogenics )
• Fires ( type: esriFieldTypeDouble, alias: Fires )
• Secondary ( type: esriFieldTypeDouble, alias: Secondary )
• Background ( type: esriFieldTypeDouble, alias: Background )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata