Storing fuels on a farm:
http://www.backwoodshome.com/articles/warner43.html
General precautions (w/some references to NFPA/local code limitations)
http://www.cdc.gov/nasd/docs/d000701...0/d000760.html
http://cbs4.com/hurricanepreps/gasol....2.394472.html
http://www.mapllc.com/Stations_and_S...g_of_Gasoline/
http://www.slate.com/id/2196815/
http://theepicenter.com/tow06056.html
Ethanol-enhanced gasoline storage issues:
http://findarticles.com/p/articles/m...2/ai_n19505958
http://commerce.wi.gov/ERpdf/bst/Pro...geOverview.pdf

Worst case scenarios and risk/benefit analysis?