EPA Environmental Dataset Gateway


Open/Close section Identification Information
Title: Jobs within a 30-minute transit ride - Service
Abstract: This mapping service summarizes the total number of jobs that can be reached within 30 minutes by transit. EPA modeled accessibility via transit by calculating total travel time between block group centroids inclusive of walking to/from transit stops, wait times, and transfers. Block groups that can be accessed in 30 minutes or less from the origin block group are considered accessible. Values reflect public transit service in December 2012 and employment counts in 2010. Coverage is limited to census block groups within metropolitan regions served by transit agencies who share their service data in a standardized format called GTFS. All variable names refer to variables in EPA's Smart Location Database. For instance EmpTot10_sum summarizes total employment (EmpTot10) in block groups that are reachable within a 30-minute transit and walking commute. See Smart Location Database User Guide for full variable descriptions.
Purpose: This data can be used to evaluate the relative performance of neighborhoods in regards to their accessibility to jobs via public transit service. Among other applications, transportation planners can used this data as inputs when evaluating the potential traffic generated by proposed mixed-use developments using EPA’s MXD tool.
Open/Close section Distribution Information
Resource(Server) URL: https://edg.epa.gov/data/Public/OP/SLD/SLD_Trans30.zip
Download URL: https://geodata.epa.gov/ArcGIS/rest/services/OA/SLD_Trans30/MapServer
Open/Close section Time Period of Content
Publication Date: 20140319
Progress: Completed
Frequency: irregular
Open/Close section Single Date
Date: 2010
Currentness: Ground condition
Open/Close section Spatial Domain
West Bounding Longitude: -138.21454852
East Bounding Longitude: -12.68151645
North Bounding Latitude: 61.7110157
South Bounding Latitude: 6.65223303
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Open/Close section Constraints
License https://edg.epa.gov/EPA_Data_License.html
Access: None.
Use: None. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated.
Open/Close section Theme Keywords
Theme Topics: Transportation Networks
Open/Close section Contact Information
Originator: US Environmental Protection Agency
Organization: U.S. Environmental Protection Agency, Office of Sustainable Communities
Person: John V. Thomas
Email: thomas.john@epa.gov
Address Type: mailing
City: Washington
State: DC
Postal Code: 20460
Telephone: 202-564-6677
Open/Close section Metadata Reference Information
File Identifier: {781BDD8F-2BF4-4072-86E9-FA67BC6C5E8B}
Metadata Date Stamp: 2017-04-20
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998