One of the largest ecosystem carbon offset projects developed to date is in Bolivia, where the borders of the Noel Kempff Mercado National Park were extended after logging rights on neighboring forest concessions were retired. This $10 million project managed by The Nature Conservancy, which protects 600,000 ha (2300 sq. miles) of tropical rainforest, will sequester an estimated 6-8 million tons of carbon emissions over 30 years. Industry investors include AEP, PacifiCorp, and British Petroleum. The land is owned by the Government of Bolivia and managed by Bolivian NGO, Fundacin Amigos de la Naturaleza. Half the carbon offsets will be credited to the Government of Bolivia and the other half to investors.