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JAN 1 � �31tj <br /> CONTAINMENT <br /> SOLUTIONSHeerin <br /> ENvORoNMENTALN�.�r���iv-r '� 9 Report <br /> DEPA <br /> Fuel Compatibility of Containment Solutions <br /> FRP Tanks and Biodiesel or Biodiesel/Diesel Blends <br /> William A. Schneider <br /> November 12, 2007 <br /> 1 <br /> Containment Solutions single, double, and triple wall tanks are listed by Underwriters <br /> Laboratories Inc., under UL Standard 1316 - Glass-Fiber-Reinforced Plastic <br /> Underground Storage Tanks for Petroleum Products, Alcohols, and Alcohol-Gasoline <br /> Mixtures. This standard outlines the requirements for fiberglass reinforced tanks for <br /> the underground storage of petroleum-based flammable and combustible liquids, <br /> alcohols, and alcohol-blended fuels. <br /> ' To obtain a UL 1316 listing, actual tank laminate was exposed to a number of <br /> environments and then tested for property retention to meet UL's minimum specified <br /> values. This testing was done by UL and included No. 2 Fuel Oil (Diesel Fuel) and <br /> ' No. 6 Fuel Oil as well as various other fuels including Ethanol and Methanol. <br /> However, at this time, there is no recognized representative biodiesel fuel for UL <br /> testing of tanks. <br /> Biodiesel is defined as a long chain (typically 16 to 18 carbons long) fatty acid mono- <br /> alkyd ester of vegetable oils and animal fats meeting the physical properties outlined <br /> in ASTM D 6751. Some sources of the oils and fats are soy beans, corn, cotton, <br /> sunflowers, rapeseeds, lard from pork, tallow from beef, etc. Pure biodiesel meeting <br /> ASTM D 6751 is referred to as B100. When B100 biodiesel is then mixed with diesel, <br /> the resulting blended fuel is referred to as Bxx where xx is the percentage of biodiesel <br /> in the blend. For example, B20 means 20% of the blend is B100 and 80% of the <br /> blend is traditional diesel. <br /> It is known from an understanding of the chemical composition of the biodiesel (long <br /> carbon chains) and its potential interaction with the materials used in a UL Standard <br /> ' 1316 listed tank, that biodiesel will have very little, if any, affect on the tank. This is <br /> further supported by resin manufacturers' field experience with fiberglass reinforced <br /> plastic parts storing similar materials. <br /> In summary, Containment Solutions underground single and double wall tanks listed <br /> by Underwriters Laboratories Inc. under UL Standard 1316 can safely store B100 <br /> biodiesel meeting ASTM D 6751 and all biodiesel/diesel blends as well as petroleum- <br /> based flammable and combustible liquids, alcohols, alcohol-blended fuels. <br /> Page 1 of 1 <br />