MIT Libraries logo

Search Constraints

| 21 - 26 of 26 | Next »
Number of results to display per page

Search Results

21. Particulate Matter (PM-10): Federal Area Designations: California, 2011

2011. United States. Environmental Protection Agency. Region IX. This polygon shapefile shows designated areas for particulate matter < 10 microns according to the 24-Hour National Ambient Air Quality Standard... California. Air Resources Board.

22. Particulate Matter (PM-2.5) Non-Attainment Areas: California, 2011

2011. United States. Environmental Protection Agency. . This polygon shapefile identifies areas in the U.S. where air pollution levels have not met the 2006 National Ambient Air Quality Standards (NAAQS)... California. Air Resources Board.

23. Traffic Bottlenecks, California, 2011

2011. California. Department of Transportation. This line shapefile represents traffic bottlenecks, or heavy congestion during peak a.m. and p.m. travel periods, on California's State Highway sys... California. Department of Transportation.

24. Truck Networks, California, 2011

2011. California. Department of Transportation. This line shapefile represents the truck network in California as of 2011. This layer shows sanctioned routes for commercial truck traffic located ... California. Department of Transportation.

25. Truck Traffic Volume, California, 2011

2011. Alexander, Binoy and California. Department of Transportation. This point shapefile contains annual average daily truck traffic volume (also known as traffic counts) on California's state highway network for 20... California. Department of Transportation.

26. Visibility Reducing Particles: California State Area Designations, 2008-2011

2011. Stephen P. Teale Data Center (Calif.). and California. Air Resources Board. Planning and Technical Support Division. This polygon shapefile shows area designations in California as required under Health and Safety Code section 39608 for ozone, nitrogen dioxide, su... California. Air Resources Board.