Identification_Information:
  Citation:
    Citation_Information:
      Originator: Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
      Originator: Federal Highway Administration, Office of Planning, HEPP-1
      Publication_Date: 2006
      Title: Non-Attainment Areas: Particulate Matter 2.5
      Geospatial_Data_Presentation_Form: vector digital data
      Publication_Information:
        Publication_Place: Washington, DC
        Publisher: Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
      Online_Linkage: http://www.bts.gov/programs/geographic_information_services/
  Description:
    Abstract: Non-attainment and maintenance areas for the United States and its territories.  For more detailed information on this dataset, see the Overview Description in the Entity Attribute section of this document.
    Purpose: To establish the spatial boundaries of each nonattainment and maintenance area.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2007
    Currentness_Reference: publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: Annually
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -121.587001
      East_Bounding_Coordinate: -71.856150
      North_Bounding_Coordinate: 48.475141
      South_Bounding_Coordinate: 32.660623
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: Air Quality
      Theme_Keyword: Nonattainment area
      Theme_Keyword: Maintenance area
      Theme_Keyword: Criteria Pollutant
      Theme_Keyword: Particulate Matter
    Place:
      Place_Keyword: USA
    Temporal:
      Temporal_Keyword_Thesaurus: None
      Temporal_Keyword: 2007
  Access_Constraints: None.
  Use_Constraints: The Non-attainment Area - Particulate Matter 2.5 dataset, or any portion thereof, can be freely distributed as long as this metadata entry is included with each distribution.  Acknowledgment of the Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) National Transportation Atlas Databases (NTAD) 2007 would be appreciated in products derived from these data.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
        Contact_Person: Geospatial Information Program
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 400 7th Street, SW Room 4117
        City: Washington
        State_or_Province: DC
        Postal_Code: 20590
        Country: USA
      Contact_Voice_Telephone: 1 202 366 DATA
      Contact_Facsimile_Telephone: 1 202 366 3640
      Contact_Electronic_Mail_Address: answers@bts.gov
  Security_Information:
    Security_Classification: Unclassified
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722
  Cross_Reference:
    Citation_Information:
      Originator: Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
      Publication_Date: 2007
      Title: National Transportation Atlas Databases (NTAD) 2007
      Geospatial_Data_Presentation_Form: vector digital data
      Publication_Information:
        Publication_Place: Washington, DC
        Publisher: Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
      Online_Linkage: http://www.bts.gov/programs/geographic_information_services/
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: Unknown
    Quantitative_Attribute_Accuracy_Assessment:
      Attribute_Accuracy_Value: None
      Attribute_Accuracy_Explanation: Unknown
  Logical_Consistency_Report: None
  Completeness_Report: Unknown
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: Unknown
      Quantitative_Horizontal_Positional_Accuracy_Assessment:
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Publication_Date: 2005
          Title: 40 Code of Federal Regulations Part 81
          Other_Citation_Details: The spatial boundaries of each nonattainment and maintenance area are defined in 40 Code of Federal Regulations Part 81.
          Online_Linkage: http://www.epa.gov/epahome/cfr40.htm
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2005
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: 40 CFR
      Source_Contribution: The spatial boundaries of each nonattainment and maintenance area are defined in 40 Code of Federal Regulations Part 81.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Environmental Protection Agency
          Publication_Date: 2005
          Title: Green Book
          Online_Linkage: http://www.epa.gov/oar/oaqps/greenbk/
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2005
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Green Book
      Source_Contribution: The United States Environmental Protection Agency's (EPA) "Green Book" defines Criteria Pollutants.  EPA uses six "criteria pollutants" as indicators of air quality, and has established for each of them a maximum concentration above which adverse effects on human health may occur. These threshold concentrations are called National Ambient Air Quality Standards (NAAQS).
    Process_Step:
      Process_Description: Data collected from the Environmental Protection Agency or created using base geographic reference layers and physical descriptions provided by EPA and contained in in 40 Code of Federal Regulations Part 81.
      Process_Date: 2004
    Process_Step:
      Process_Description: Updated with information from the EPA Green Book.
      Process_Date: 2005
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Bruce D. Spear
            Contact_Organization: Federal Highway Administration, Office of Planning, HEPP-1
          Contact_Voice_Telephone: 1 202 366 8870
          Contact_Facsimile_Telephone: 1 202 493 2198
          Contact_Electronic_Mail_Address: bruce.spear@fhwa.dot.gov
    Process_Step:
      Process_Description: Spatial data edited and cleaned to more closely match shorelines.
      Process_Date: 2006
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Bruce D. Spear
            Contact_Organization: Federal Highway Administration, Office of Planning, HEPP-1
          Contact_Voice_Telephone: 1 202 366 8870
          Contact_Facsimile_Telephone: 1 202 493 2198
          Contact_Electronic_Mail_Address: bruce.spear@fhwa.dot.gov
    Process_Step:
      Process_Description: Standard quality control processes performed in preparation for publication.
      Process_Date: 2006
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Geospatial Information Program
            Contact_Organization: Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
          Contact_Voice_Telephone: 1 202 366 DATA
          Contact_Facsimile_Telephone: 1 202 366 3640
          Contact_Electronic_Mail_Address: answers@bts.gov
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 39
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution: 0.000001
      Longitude_Resolution: 0.000001
      Geographic_Coordinate_Units: Decimal degrees
    Geodetic_Model:
      Horizontal_Datum_Name: D_WGS_1984
      Ellipsoid_Name: WGS_1984
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257224
  Vertical_Coordinate_System_Definition:
    Altitude_System_Definition:
      Altitude_Resolution: 0.000010
      Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: naa_ma_pm2_5
      Entity_Type_Definition: Non-Attainment Areas: Particulate Matter 2.5
      Entity_Type_Definition_Source: RITA/BTS
    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: ID
      Attribute_Definition: Sequential Unique Identifier
      Attribute_Definition_Source: RITA/BTS
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: AREA
      Attribute_Definition: Area of the polygon
      Attribute_Definition_Source: RITA/BTS
      Attribute_Domain_Values:
        Unrepresentable_Domain: Numeric Value
    Attribute:
      Attribute_Label: AREA_NAME
      Attribute_Definition: Name of the NAA as designated by the EPA
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character Value
    Attribute:
      Attribute_Label: STATE1
      Attribute_Definition: Primary state in which NAA is found
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name: Official List of U.S. Postal Code Abbreviations
          Codeset_Source: U.S. Postal Service (USPS)
    Attribute:
      Attribute_Label: STATE2
      Attribute_Definition: Primary state in which NAA is found
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name: Official List of U.S. Postal Code Abbreviations
          Codeset_Source: U.S. Postal Service (USPS)
    Attribute:
      Attribute_Label: STATE3
      Attribute_Definition: Primary state in which NAA is found
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name: Official List of U.S. Postal Code Abbreviations
          Codeset_Source: U.S. Postal Service (USPS)
    Attribute:
      Attribute_Label: EPA_REGION
      Attribute_Definition: Primary EPA region in which the NAA is found
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name: Official List of EPA Regions: http://www.epa.gov/epahome/locate2.htm
          Codeset_Source: U.S. Environmental Protection Agency (EPA)
    Attribute:
      Attribute_Label: EPA_REGIO1
      Attribute_Definition: Primary EPA region in which the NAA is found
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name: Official List of EPA Regions: http://www.epa.gov/epahome/locate2.htm
          Codeset_Source: U.S. Environmental Protection Agency (EPA)
    Attribute:
      Attribute_Label: EPA_REGIO2
      Attribute_Definition: Primary EPA region in which the NAA is found
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name: Official List of EPA Regions: http://www.epa.gov/epahome/locate2.htm
          Codeset_Source: U.S. Environmental Protection Agency (EPA)
    Attribute:
      Attribute_Label: STATUS
      Attribute_Definition: Current status of the area as designated by the EPA.
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Nonattainment
          Enumerated_Domain_Value_Definition: area is in nonattainment status
          Enumerated_Domain_Value_Definition_Source: EPA
    Attribute:
      Attribute_Label: CLASSIFICA
      Attribute_Definition: Severity classification as identified by the EPA.
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Subpart 1
          Enumerated_Domain_Value_Definition: Subpart 1 (which is referred to as "basic") nonattainment contains general, less prescriptive, requirements for nonattainment areas for any pollutant--including ozone--governed by a National Ambient Air Quality Standards.
          Enumerated_Domain_Value_Definition_Source: EPA
    Attribute:
      Attribute_Label: ATTAINMENT
      Attribute_Definition: Date or year in which the area received its current classification by the EPA.
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Unrepresentable_Domain: date or year
    Attribute:
      Attribute_Label: COMMENTS
      Attribute_Definition: Additional clarifying information on the status or characteristics of the area.
      Attribute_Definition_Source: EPA
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character Value
    Attribute:
      Attribute_Label: STFIPS
      Attribute_Definition: State FIPS code
      Attribute_Definition_Source: RITA/BTS
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name: FIPS (Federal Information Processing Standard) Pub 6-4
          Codeset_Source: National Institute for Standards and Technology (NIST)
    Attribute:
      Attribute_Label: VERSION
      Attribute_Definition: Version of the database
      Attribute_Definition_Source: RITA/BTS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 00
          Range_Domain_Maximum: 99
  Overview_Description:
    Entity_and_Attribute_Overview:
      Air pollutants called particulate matter include dust, dirt, soot, smoke and liquid droplets directly emitted into the air by sources such as factories, power plants, cars, construction activity, fires and natural windblown dust. Particles formed in the atmosphere by condensation or the transformation of emitted gases such as SO2 and VOCs are also considered particulate matter. 

      Based on studies of human populations exposed to high concentrations of particles (sometimes in the presence of SO2) and laboratory studies of animals and humans, there are major effects of concern for human health. These include effects on breathing and respiratory symptoms, aggravation of existing respiratory and cardiovascular disease, alterations in the body's defense systems against foreign materials, damage to lung tissue, carcinogenesis and premature death. The major subgroups of the population that appear to be most sensitive to the effects of particulate matter include individuals with chronic obstructive pulmonary or cardiovascular disease or influenza, asthmatics, the elderly and children. Particulate matter also soils and damages materials, and is a major cause of visibility impairment in the United States. 

      Annual and 24-hour National Ambient Air Quality Standards (NAAQS) for particulate matter were first set in 1971. Total suspended particulate (TSP) was the first indicator used to represent suspended particles in the ambient air. Particles less than 2.5 micrometers in diameter (PM2.5) are referred to as "fine" particles and are believed to pose the largest health risks. Because of their small size (less than one-seventh the average width of a human hair), fine particles can lodge deeply into the lungs.

      Title 40, Part 50 of the Code of the Federal Regulations lists the ambient air quality standard for particulate matter.
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
        Contact_Person: Geospatial Information Program
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 400 7th Street, SW Room 4117
        City: Washington
        State_or_Province: DC
        Postal_Code: 20590
        Country: USA
      Contact_Voice_Telephone: 1 202 366 DATA
      Contact_Facsimile_Telephone: 1 202 366 3640
      Contact_Electronic_Mail_Address: answers@bts.gov
  Resource_Description: Downloadable Data
  Distribution_Liability: None
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ESRI Shapefile
        Format_Version_Date: 2007
        File_Decompression_Technique: No compression applied. However, if using digital transfer online option, note access instructions.
        Transfer_Size: 5.098
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://www.bts.gov/programs/geographic_information_services/
          Access_Instructions: The NTAD cdrom can be ordered from the online bookstore at www.bts.gov.  NTAD can also be downloaded from the Geographic Information Program web sit at http://www.bts.gov/programs/geographic_information_services/.
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: ISO 9660
    Fees: None
    Ordering_Instructions: Call (202-366-DATA), fax (202-366-3640), or E-mail (answers@bts.gov) RITA/BTS to request the National Transportation Atlas Databases (NTAD) 2007 CD-ROM.The NTAD cdrom can be ordered from the online bookstore at www.bts.gov.  Individual datasets from the NTAD can also be downloaded from the Geographic Information Program web sit at http://www.bts.gov/programs/geographic_information_services/.
  Technical_Prerequisites: Must have access to GIS software such as ESRI's ArcView or ArcINFO, or other compatible software to view the data
  Available_Time_Period:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2007
Metadata_Reference_Information:
  Metadata_Date: 20070330
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
        Contact_Person: Geospatial Information Program
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 400 7th Street, SW Room 4117
        City: Washington
        State_or_Province: DC
        Postal_Code: 20590
        Country: USA
      Contact_Voice_Telephone: 1 202 366 DATA
      Contact_Facsimile_Telephone: 1 202 366 3640
      Contact_Electronic_Mail_Address: answers@bts.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile
