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California Air Resources Board (CARB) staff have posted the California Multimedia Evaluation of E10-E15 Gasoline-Ethanol Blends Tier II Report, prepared by Ecoengineering, Inc. for Growth Energy and the Renewable Fuels Association (RFA). This report presents the testing procedures and results that addressed the data gaps identified during Tier I of the E15 multimedia evaluation (MME). The Tier I Report, reviewed and approved by the Multimedia Working Group, is available at: California Multimedia Evaluation of E11-E15 Gasoline-Ethanol Blends Tier I Report.
As a part of the MME for E15, CARB contracted with the University of California at Riverside (UCR) Bourns College of Engineering – Center for Environmental Research and Technology (CE-CERT) to evaluate exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). Two fuels (E10 and E15) were tested on twenty vehicles (2016 and newer gasoline-fueled vehicles) over triplicate Federal Test Procedure (FTP) cycles. The report is available at: Comparison of Exhaust Emissions Between E10 CaRFG and Splash Blended E15.
Background
California Health and Safety Code (43830.8) requires an MME be conducted and reviewed by the California Environmental Policy Council (CEPC) before specifications for new motor vehicle fuels can be considered by the CARB. The MME is a multi-step process with the purpose of developing information that will enable the CEPC to determine whether a new fuel specification would cause any significant adverse impacts to public health or the environment.
Contact
If you have any questions, please contact fuels@arb.ca.gov.
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