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Q2 2013 Financial Results

27 Leading Provider of Hazardous Waste Treatment and Disposal Services Hazardous Incinerator Capacity Other Heritage 6% 7% Ross 9% Hazardous Landfill Volume Treatment, Storage & Market Share Disposal Facilities (TSDFs) Heritage 9% WM 18% Veolia 12% Clean Harbors 66% Other 5% Clean Harbors 24% Other 27% Clean Harbors 35% U.S. Ecology WM EQ 25% 19% 6% Phillips Giant 6% Veolia 13% 13% Source: El Digest Source: El Digest Source: El Digest CleanHarbor

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