Quick resource: http://wrrc.arizona.edu/sites/wrrc.arizona.edu/files/Quick%20Resouce-%20SW%20Quality%20%28final%29.pdf
Other resources:
U.S. EPA information on polluted runoff http://water.epa.gov/polwaste/nps/index.cfm
Southwest example of a program to prevent runoff pollution http://www.pagregion.com/tabid/766/Default.aspx