Marathon’s Corporate Social Responsibility Performance Data

This table contains data relevant to Marathon's environmental performance. See full CSR Performance Data table for complete notes regarding reporting. In this table, some totals may not equal the sum of their components and separate calculation of other data may be affected due to independent rounding. The metrics below are for operations under direct Marathon management and operational control. GHG emissions are estimated using industry guidelines (API’s Compendium of Greenhouse Gas Emissions Methodologies for the Oil and Gas Industry and the API, IPIECA and OGP Petroleum Industry Guidelines for Reporting Greenhouse Gas Emissions).


 
Performance Areas 2005 2006 2007 2008 2009
Environmental Stewardship
GHG Emissions – Global a, b
Direct Emissions – million tonnes CO2e 15.4 14.9 14.6 14.0 13.7
Indirect Emissions – million tonnes CO2e 4.15 4.26 4.49 4.62 4.55
Total GHG Emissions – million tonnes CO2e 19.5 19.2 19.0 18.7 18.3
GHG Intensity – tonnes CO2e on a weighted basis/Production and Throughput 30.0 29.2 30.3 30.6 30.0
GHG Emissions – by Segment a, b
Downstream GHG Emissions – million tonnes CO2e 13.9 14.0 13.9 13.7 13.7
Downstream GHG Intensity – tonnes CO2e/MBBL Refinery Throughput 32.3 31.7 31.1 32.4 32.6
Upstream GHG Emissions – million tonnes CO2e 5.7 5.1 5.2 5.0 4.6
Upstream GHG Intensity – tonnes CO2e/MBOE Production 25.2 23.0 28.3 25.6 22.1
Flaring (Upstream) – million tonnes 0.369 0.225 0.228 0.296 0.217
Energy Use b – trillion BTU 255 257 259 256 255
Other Operational Air Emissions – Global c
Sulfur Dioxides (SOx) – tons 8,314 9,210 7,787 7,607 na
Nitrogen Oxides (NOx) – tons 22,867 22,858 24,289 24,344 na
Volatile Organic Compounds (VOCs) – tons 12,591 12,373 10,976 9,874 na
Carbon Monoxide (CO) – tons 13,059 12,184 12,290 13,697 na
Particulate Matter (PM) – tons 2,270 2,327 2,347 2,315 na
Other Operational Air Emissions – by Segment c
Downstream Sulfur Dioxides (SOx) – tons 3,782 4,624 3,648 2,992 na
Downstream Nitrogen Oxides (NOx) – tons 7,580 7,269 7,116 6,666 na
Downstream Volatile Organic Compounds (VOCs) – tons 8,729 8,982 7,333 7,498 na
Downstream Carbon Monoxide (CO) – tons 4,443 4,900 4,958 4,501 na
Downstream Particulate Matter (PM) – tons 2,054 2,119 2,094 2,059 na
Upstream Sulfur Dioxides (SOx) – tons 4,532 4,586 4,139 4,615 na
Upstream Nitrogen Oxides (NOx) – tons 15,287 15,589 17,173 17,678 na
Upstream Volatile Organic Compounds (VOCs) – tons 3,862 3,391 3,643 2,376 na
Upstream Carbon Monoxide (CO) – tons 8,616 7,284 7,332 9,196 na
Upstream Particulate Matter (PM) – tons 216 208 253 256 na
Toxic Release Inventory (TRI - Downstream) d – tonnes 947 1,000 942 1,075 na
Oil Spills (Global) b, e – number 67 60 43 57 111
Volume of Oil Spilled (Global) b, e – barrels 1,067 1,077 428 9,113 2,272
Oil Spills (by Segment)
Downstream Oil Spills – number 12 10 13 24 56
Downstream Spill Volume – barrels 614 432 117 8,722 1,603
Downstream Spill Rate – barrels spilled/Refinery Throughput 1.43 0.97 0.26 20.71 3.81
Upstream Oil Spills – number 55 50 30 33 55
Upstream Spill Volume – barrels 453 645 311 392 669
Upstream Spill Rate – barrels spilled/Company-operated Oil Production 5.30 7.89 5.08 5.25 6.97
Environmental Expenditures – million dollars 665 505 511 826 801

a. GHG carbon dioxide equivalent (CO2e) emissions are based on carbon dioxide, methane, nitrous oxide; Downstream emissions also include sulfur hexafluoride.
    Reflects emissions from Marathon-operated facilities; non-operated interests are not included.
b. Some data updated due to improved methodologies, corrected calculation errors or other reporting revisions.
c. Criteria pollutant data reported one year in arrears.
d. Toxic Release Inventory (TRI) data includes air, water and land releases and offsite disposal, reported in accordance with U.S. EPA requirements. Data reported
    one year in arrears.
e. 2009 spill data reflect a revised reportable oil spill definition to include all oil spills equal to or greater than 1 barrel and all reportable oil spills regardless of size.
    Oil spills include any liquid hydrocarbon release, including crude oil, natural gas condensates and refined products.