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Q2 2013 Financial Results

63 Industrial Markets Represents ~40% of Q2 2013 S-K ENV revenue ■ 35 classes Top 8 classes - 80% of revenue Q2 2013 Revenue Top 8 Industrial Classes 5% 5% 19% ☐ ■ Used oil volume ~9% of total 6% ■ Market characterizations Larger REV/customer 9% - Smaller number of customers - Some customer cross-over Longer sales cycle Typically lower quality used oil 9% MFG-Mach/Med Fab Metal Products MFG - Misc Chemical MFG Exploration/Drilling ■Printing MFG-Non metal 17% MFG-Trans Equip 12% CleanHarbors

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