Keywords
Theme:
Nonattainment area, Maintenance area, Criteria Pollutant, Nitrogen Dioxide
Place:
USA
Temporal:
2007, 2008, 2009
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.
_________________
Status of the data
Complete
Data update frequency: Annually
Data update frequency: Annually
Time period for which the data is relevant
Date and time:
2009
Description:
publication date
Publication Information
Who created the data: Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS), Federal Highway Administration, Office of Planning, HEPP-1
Date and time:
2005
Publisher and place:
Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS), Washington, DC
_________________
Data storage and access information
File name: naa_ma_nox
Type of data: vector digital data
http://www.bts.gov/programs/geographic_information_services/
Data processing environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722
Type of data: vector digital data
Location of the data:
Accessing the data
Data format: ESRI Shapefile
Size of the data: 0.082 MB
Data transfer size: 5.098 MB
How to decompress the file: No compression applied. However, if using digital transfer online option, note access instructions.
http://www.bts.gov/programs/geographic_information_services/
Size of the data: 0.082 MB
Data transfer size: 5.098 MB
How to decompress the file: No compression applied. However, if using digital transfer online option, note access instructions.
Network location:
Access instructions: The NTAD DVD 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/.
Available media: DVDConstraints on accessing and using the data
Access constraints:
None.
Use constraints:
The Non-attainment Area - Nitrogen Dioxide 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) 2009 would be appreciated in products derived from these data.
Details about this document
Contents last updated: 20090403
at time 12330900
Who completed this document
Geospatial Information Program
Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
mailing and physical address:
1 202 366 DATA (voice)
answers@bts.gov
Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
mailing and physical address:
1200 New Jersey Ave., SE
Washington, DC 20590
USA
1 202 366 DATA (voice)
answers@bts.gov
Standards used to create this document
Standard name: FGDC Content Standards for Digital Geospatial Metadata
Standard version: FGDC-STD-001-1998
Time convention used in this document: local time
Metadata profiles defining additonal information
ESRI Metadata Profile: http://www.esri.com/metadata/esriprof80.html
Standard version: FGDC-STD-001-1998
Time convention used in this document: local time
Metadata profiles defining additonal information
Horizontal coordinate system
Geographic coordinate system name: GCS_WGS_1984
Details
Geographic Coordinate System
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
Altitude System Definition
Resolution: 0.000010
Encoding Method: Explicit elevation coordinate included with horizontal coordinates
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Bounding coordinates
Horizontal
In decimal degrees
West:
-118.944897
East:
-116.517286
North:
34.817802
South:
32.799587
In projected or local coordinates
Left: -118.944897
Right: -116.517286
Top: 34.817802
Bottom: 32.799587
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Lineage
FGDC lineage
Process step 1
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 date: 2004
Process step 2
Process description: Updated with information from the EPA Green Book.
Process date: 2005
Process date: 2005
Process step 3
Process description: Spatial data edited and cleaned to more closely match shorelines.
Process date: 2006
Process date: 2006
Process step 4
Process description: Standard quality control processes performed in preparation for publication.
Process date: 2009
Process date: 2009
Who did this process
Geospatial Information Program
Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
mailing and physical address:
1 202 366 DATA (voice)
1 202 366 3640 (fax)
answers@bts.gov
Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)
mailing and physical address:
1200 New Jersey Ave. SE
Washington, DC 20590
USA
1 202 366 DATA (voice)
1 202 366 3640 (fax)
answers@bts.gov
Sources
Source 1:
40 Code of Federal Regulations Part 81
(40 CFR)
Contribution: The spatial boundaries of each nonattainment and maintenance area are defined in 40 Code of Federal Regulations Part 81.
Currentness of this source
Date and time:
2005
Source 2:
Green Book
(Green Book)
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).
Currentness of this source
Date and time:
2005
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Spatial data quality
Horizontal positional accuracy
Unknown
_________________
Spatial data description
Vector data information
ESRI description
naa_ma_nox
ESRI feature type: Simple
Geometry type: Polygon
Topology: FALSE
Feature count: 1
Spatial Index: TRUE
Linear referencing: FALSE
Geometry type: Polygon
Topology: FALSE
Feature count: 1
Spatial Index: TRUE
Linear referencing: FALSE
SDTS description
naa_ma_nox:
G-polygon, 1
Feature class: SDTS feature type, feature count
Details for naa_ma_nox
Type of object: Feature Class
Number of records: 1
Description
Non-Attainment Areas: Nitrogen Dioxide
Source: RITA/BTS
Source: RITA/BTS
Attributes
FID
Definition:
Internal feature number.Definition Source:
ESRI
Shape
Definition:
Feature geometry.Definition Source:
ESRI
ID
Data type: Number
Width: 10
Definition:
Width: 10
Definition:
Sequential Unique IdentifierDefinition Source:
RITA/BTS
AREA
Data type: Number
Width: 15
Number of decimals: 2
Definition:
Width: 15
Number of decimals: 2
Definition:
Area of the polygonDefinition Source:
RITA/BTS
AREA_NAME
Data type: String
Width: 75
Definition:
Width: 75
Definition:
Name of the NAA as designated by the EPADefinition Source:
EPA
STATE1
Data type: String
Width: 5
Definition:
Width: 5
Definition:
Primary state in which NAA is foundDefinition Source:
EPA
STATE2
Data type: String
Width: 5
Definition:
Width: 5
Definition:
Additional state with territory included in the NAADefinition Source:
EPA
STATE3
Data type: String
Width: 5
Definition:
Width: 5
Definition:
Additional state with territory included in the NAA.Definition Source:
EPA
EPA_REGION
Data type: String
Width: 5
Definition:
Width: 5
Definition:
Primary EPA region in which the NAA is foundDefinition Source:
EPA
EPA_REGIO1
Data type: String
Width: 5
Definition:
Width: 5
Definition:
Additional EPA region with territory included in the NAA.Definition Source:
EPA
STATUS
Data type: String
Width: 20
Definition:
Width: 20
Definition:
Current status of the area as designated by the EPA.Definition Source:
EPA
CLASSIFICA
Data type: String
Width: 20
Definition:
Width: 20
Definition:
Severity classification as identified by the EPA.Definition Source:
EPA
ATTAINMENT
Data type: String
Width: 10
Definition:
Width: 10
Definition:
Date or year in which the area received its current classification by the EPA.Definition Source:
EPA
COMMENTS
Data type: String
Width: 75
Definition:
Width: 75
Definition:
Additional clarifying information on the status or characteristics of the area.Definition Source:
EPA
STFIPS
Data type: String
Width: 2
Definition:
Width: 2
Definition:
State FIPS codeDefinition Source:
RITA/BTS
VERSION
Data type: String
Width: 2
Definition:
Width: 2
Definition:
Version of the databaseDefinition Source:
RITA/BTS
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Overview
Nitrogen dioxide (NO2) is a brownish, highly reactive gas that is present in all urban atmospheres. NO2 can irritate the lungs, cause bronchitis and pneumonia, and lower resistance to respiratory infections. Nitrogen oxides are an important precursor both to ozone (O3) and acid rain, and may affect both terrestrial and aquatic ecosystems. The major mechanism for the formation of NO2 in the atmosphere is the oxidation of the primary air pollutant nitric oxide (NO). NOx plays a major role, together with VOCs, in the atmospheric reactions that produce O3. NOx forms when fuel is burned at high temperatures. The two major emissions sources are transportation and stationary fuel combustion sources such as electric utility and industrial boilers. Title 40, Part 50 of the Code of the Federal Regulations lists the ambient air quality standard for nitrogen dioxide.