Chevron Corporate Responsibility Report 2009

Global Emissions to Air
1, 2, 3
Metric tons
2009
2008
2007
2006
2005
Upstream Downstream Other
VOCs
SOx
2009
2008
2007
2006
2005
125,036
91,644
142,052
118,210
118,874
221,734
265,819
260,640
383,914
468,703
Petroleum Spills 4, 5
Volume in barrels
Spills to land Volume Secondary
and water recovered containment
2009
2008
2007
2006
2005
9,368
7,512
9,245
6,920
6,099
3,923
17,492
14,399
11,202
47,934
Petroleum Spills 5
Number of spills
2009
2008
2007
2006
2005
760
798
826
803
846
5 All spills to water are included. Spills to land and
secondary containment that are greater than or equal
to one barrel are included.
NOx
2009
2008
2007
2006
2005
122,911
134,785
144,676
138,104
121,916
4 Secondary containment volume — which is not
released to the environment — is included in the total
volume listed at the end of each bar. Approximately
14 percent, or 1,289 barrels, of the total volume was
spilled to secondary containment in 2009.
Global Emissions to Air by Sector
1, 2, 3
Metric tons
Average Oil Concentration
in Discharges to Water 6
Parts per million
Fines and Settlements 7
Environmental, Health and Safety
Fines and Settlements
Upstream Downstream Other
Upstream
Manufacturing and Chemicals
VOCs 2009 225,949 39,630 240
2008 201,209 18,648 1,878
2007 240,716 18,788 1,136
2006 357,727 26,100 87
2005 445,049 23,442 212
SOx 2009 125,520 15,997 536
2008 97,731 18,496 8,810
2007 63,223 20,451 7,970
2006 82,922 25,574 9,714
2005 87,455 23,986 7,433
NOx 2009 110,068 12,133 711
2008 95,717 12,282 26,785
2007 121,378 14,041 9,257
2006 113,001 16,020 9,083
2005 97,829 15,837 8,250
2009
2008
2007
2006
3.87
3.73
3.70
4.51
11.28
12.94
15.64
32.03
6 Global Upstream average oil concentration in
discharges to water decreased in 2009, mainly due
to additional well-injection capacity, which allowed the
Partitioned Zone business unit to cease discharging
produced water as of June 2009. Manufacturing and
Chemicals average oil concentration in discharges
to water increased, mainly due to a process upset
and wastewater-treatment maintenance issues at
our Pascagoula, Mississippi, refinery. A new effluent
treatment plant at Pascagoula came fully on line in
November 2009.
YEAR 04 05 06 07 08 09
Total
number 469 577 699 684 564 460
7 We reduced the number of incidents resulting in fines
and settlements for alleged violations of environmental,
health or safety regulations to 460 in 2009 from
564 in 2008. Environmental fines and settlements
were $5.9 million in 2009 and accounted for 0.17 percent
of our total environmental expenditures. Total
environmental expenditures were $3.5 billion, of which
capital expenditures were $1.7 billion and noncapital
expenditures were $1.8 billion. Health and safety fines
and settlements accounted for approximately 8 percent
of the total fines and settlements, representing
$0.5 million.
1 We improve our methodology and scope for reporting
global emissions to air annually, making year-to-year
comparisons difficult. Our focus is to continually
improve our reporting practices.
2 Volatile organic compounds (VOCs) derive primarily
from fugitive emissions from equipment (such as
valves, pumps and compressors), flaring and venting,
and flashing gas. Nitrogen oxides (NOx) and sulfur
oxides (SOx) occur during combustion.
3 During 2009, improvements in estimation methodologies
in several reporting units resulted in variances in
reported emissions compared with 2008.
Global VOC emissions were higher than in 2008
primarily due to the Nigeria/Mid-Africa business unit’s
improved estimation of vented gas volumes, the
Eurasia business unit’s replacement of default emissions
factors with locally specified data, and Global
Marketing’s estimation of storage tank and loading
emissions for the first time. This gain was partially
offset by reductions due to improved reporting by the
Asia South business unit and decreased production
in Alaska, United States.
Global SOx emissions were higher than in 2008,
mainly due to the Eurasia business unit’s improved
reporting and to the Partitioned Zone (between Saudi
Arabia and Kuwait) business unit’s increased sour gas
production and improved reporting of gas production
and flaring.
Global NOx emissions were lower than in 2008, mainly
due to improved reporting by the IndoAsia business
unit and the completion in 2008 of a drilling program
at Indonesia geothermal and power operations.
U.S. Refining (Manufacturing) data on emissions to air
are no longer additionally reported separately, as this
report is enterprisewide and global in nature.
Global Gas, previously reported as “other,” was
included with Upstream in 2009. “Other” includes
Chemicals, Chevron Business and Real Estate
Services, Chevron Mining Inc., Chevron Environmental
Management Co., and Corporate Aviation.
Due to rounding, individual numbers may not sum to
the total numbers.
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