1. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 1 Pounds of Total OSHA Carcinogen Emissions per 1000 Barrels per Calendar Day 2005 OSHA carcinogens = 188 compounds known or likely to cause cancer

2. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 2 Percent of Total US Refining Capacity and Total US OSHA Carcinogen Emissions Related to Petroleum Refining (SIC 29) 2005

3. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 3 Shell Pounds of OSHA Carcinogen Emissions per 1000 Barrels per Calendar Day 2005 (by State)

4. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 4

5. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 5 Valero Pounds of OSHA Carcinogen Emissions per 1000 Barrels per Calendar Day 2005 (by State)

6. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 6

7. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 7 ExxonMobil Pounds of OSHA Carcinogen Emissions per 1000 Barrels per Calendar Day 2005 (by State)

8. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 8

9. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 9 ConocoPhillips Pounds OSHA Carcinogen Emissions per 1000 Barrels per Calendar Day 2005 (by State)

10. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 10

11. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 11 Citgo OSHA Carcinogen Emissions per 1000 Barrels per Calendar Day 2005 (by State)

12. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 12

13. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 13 Pounds of Total Benzene Emissions per 1000 Barrels per Calendar Day 2005

14. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 14 Percent of Total US Refining Capacity and Total US Benzene Emissions Related to Petroleum Refining (SIC 29) 2005

15. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 15 2005 Benzene Emissions (lbs) per 1000 Barrels Refined per Day by Firm and State

16. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 16

17. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 17

18. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 18 25 Largest US Benzene Emitters (SIC 29) Petroleum (2005)

19. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 19

20. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 20 25 Largest US Benzene Emitters (SIC 28) Chemical (2005)

21. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 21

22. Source: Energy Information Administration (EIA), Form EIA-820, “Annual Refinery Report.” 2005 and 2006. Environmental Protection Agency (EPA), Toxics Release Inventory (TRI), TRI-Explorer SIC 29 Benzene 2005. EPA, TRI, TRI-Explorer SIC 29 OSHA Carcinogens, 2004 and 2005. EPA, TRI, TRI-Explorer SIC 28 Benzene, 2005. TRI OSHA Carcinogens are defined as carcinogenic or probably carcinogenic by the IARC; a known or reasonably anticipated carcinogen by the NTP; or part of 29 CFR part 1910 Subpart Z under OSHA. 22 25 Largest US Benzene Emitters (SIC 28) Chemical (2005)