https://sites.google.com/site/calfiresite/home/tracy-fd-2007-soc - http://www.ci.tracy.ca.us/content/files/fire/soc_final.pdf - Tracy Calif 2007 Standards of Cover Study
http://www.ci.tracy.ca.us/modules/content/index.php?id=159 - Kirchhoff Review of Standards of Cover Study - 2007ish - Tracy Calif