EPA, SPCC Rules – http://www.epa.gov/osweroe1/content/spcc/
Bio Diesel – www.biodiesel.org
PEI – http://www.pei.org/ (Petroleum Equipment Institute)
NFPA – NFPA Code 30A Motor Fuel Dispensing Stations (National Fire Protection Association)
UL – http://www.ul.com/global/eng/pages/aboutul/ (Underwriters Laboratories)
Barker Lemar Companies – http://barkerlemarcompanies.com/ (SPCC Plan assistance)
Great Plains Industry – http://gpi.net/fuel-products/ (Fuel Pumps)
Clay and Bailey – http://www.claybailey.com/ (Vents, Manways, Fittings)
Krueger Gauges –  http://www.ksentry.com/