Press for Mascoma

Mascoma Corporation, a renewable fuels company, and Lallemand Ethanol Technology, a leading supplier of fermentation ingredients to fuel ethanol producers, announced today that they have entered into a commercial agreement with Pacific Ethanol Columbia, LLC, the owner of the ethanol production facility located in Boardman, Oregon and operated by Pacific Ethanol, Inc., (NASDAQ: PEIX), the leading marketer and producer of low-carbon renewable fuels in the Western United States. The agreement provides terms and pricing for any purchases of the Mascoma Grain Technology, or MGT™, yeast product for use at Pacific Ethanol Columbia, a facility with annual production capacity of 40 million gallons, and also provides for the extension of these terms and pricing to three additional plants operated by Pacific Ethanol. The four Pacific Ethanol plants have a combined annual production capacity of approximately 200 million gallons.