Environment

Marathon is committed to meeting the world's energy needs in a responsible manner. The Company uses environmental metrics to determine where to focus its efforts to improve performance by reducing the number of reportable spills and releases, permit exceedances, and notices of violations.

Spills and Discharges

For the oil and gas industry, oil spills are a principal measure of environmental performance due to their potential impacts on the environment. Marathon reports the total number of spills equal to or greater than 1 barrel and the total volume of oil released from these spills on a global basis. Due to past recording practice, Downstream data include only those oil spills that were reportable to federal, state or local agencies.

Wastes and Residual Materials

Marathon complies with all waste regulations throughout its worldwide operations and conducts programs to reduce the volumes of hazardous and non-hazardous materials it generates. Programs for waste minimization, recycling, reuse and reclamation are developed by Marathon facilities based on their specific needs. The Company is investigating systems to consistently track, capture and collect consolidated data for solid and hazardous waste management activities across the Company.

Emissions

Marathon generates air emissions during its drilling, production, refining, terminal, transportation, storage and retail operations. As these operations expand to meet growing demand for energy, emissions may also increase.

Marathon is committed to minimizing all types of air emissions and evaluates operations periodically to identify process improvements and technology solutions to minimize air emissions. Current reduction efforts include cost-effective energy efficiency measures; incident prevention and prudent operations to reduce natural gas flaring; and use of best practices and affordable technologies in operations.