green trees line both banks of the sacramento river. the yellow tower bridge crosses the blue water leading to the tall buildings of the sacrament skyline. the scene is set against a clear blue sky.

CARB Miscellaneous Process Methodologies - Unpaved Road and Traffic Area Dust

7.10 Non-Farm Roads

December 2012 Update

San Joaquin Valley, May 2004

Prior Updates

August 1997 Update

Supporting Documentation

2006 PM2.5 Speciation Profile Update

Detailed Documentation for the SJV 2003 SIP Revision

7.10a Private Unpaved Roads

San Joaquin Valley, May 2004

7.11 Farm Roads

April 2016 Update (2012 Harvested Crop Acreage)

December 2013 Update (2005 and 2007 Harvested Crop Acreage)

Prior Updates

August 1997 Update

Supporting Documentation

2012 Harvested Crop Acreage

2007 SJV Harvested Crop Acreage 

2005 Non-SJV Harvested Crop Acreage

Farm Roads VMT Factors

Crop Calendars

2006 PM2.5 Speciation Profile Update

Detailed Documentation for the SJV 2003 SIP Revision