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State of California 9%0 <br /> 6 Edmund G. Brown Jr. Water Boards <br /> Air Resources Board State Water Resources Control Board <br /> Mary D. Nichols Felicia Marcus <br /> Chairman Chair <br /> July 31, 2013 <br /> Certified Unified Program Agencies (CUPAs) <br /> Underground Storage Tank (UST) Operators <br /> Petroleum Fuel Marketers, Refiners, and Blenders <br /> Renewable Diesel Producers/Importers <br /> Other Interested Stakeholders <br /> Renewable Diesel Should Be Treated the Same as Conventional Diesel <br /> This is a joint statement by the Air Resources Board (CARB) and the State Water <br /> Resources Control Board intended to clarify questions that have been raised regarding <br /> the status of renewable diesel. As discussed below, renewable diesel should be treated <br /> the same as conventional CARB diesel for all purposes, including storage in <br /> underground storage tanks (USTs). <br /> For purposes of this statement, conventional CARB diesel is petroleum-based diesel <br /> that meets specified aromatics, sulfur content, and lubricity standards, as well as ASTM <br /> International standard specification, ASTM D975-12a. Similarly, renewable diesel also <br /> meets ASTM D975-12a, but it is made from non-petroleum sources. Specifically, <br /> renewable diesel meets the definition of"hydrocarbon oil" and the physical and <br /> chemical properties specified in ASTM D975-12a. For comparison, Attachment 1 <br /> shows the ASTM D975-12a specifications and typical properties for conventional CARB <br /> diesel and samples of renewable diesels recently tested by various researchers. As <br /> shown, both the tested conventional CARB diesel and renewable diesel samples fall <br /> well within the ASTM D975-12a specifications. <br /> Despite renewable diesel being comparable to conventional CARB diesel, there have <br /> been questions regarding the ability of marketers and others to store renewable diesel <br /> in USTs. Further, questions have been raised about the compatibility of renewable <br /> diesel with leak detection systems used in USTs currently storing conventional CARB <br /> diesel. We consider renewable diesel to be a "drop in" fuel that can be blended with <br /> conventional CARB diesel in any amount and used with existing infrastructure and <br /> diesel engines. Accordingly, renewable diesel that meets the requirements for <br /> conventional CARB diesel and ASTM D975-12a should be treated no differently than <br /> conventional CARB diesel that is legal for sale in California. <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs, see our website:htti)://www.arb.ca.aov. <br /> California Environmental Protection Agency <br /> Printed on Recycled Paper <br />