Investor Presentaiton

Strong commitment to air quality Diesel Colombia Medellín Bogota and Public Transportation Systems 4,500 1,200 Sulfur content (parts per million) 3,000 2,500 500 500 500 50 50 2007 2008 2009 2010 Gasoline 1,000 727 700 231 2008 2009 2010 Source: Ecopetrol 2012 20160 Years 33

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