| ACC |
American Chemistry Council |
| API |
American Petroleum Institute |
| BLS |
U.S. Bureau of Labor Statistics |
| BOEPD |
Barrles of oil equivalent per day |
| CO2 |
Carbon Dioxide |
| EOR |
Enhanced Oil Recovery |
| EPA |
U.S. Environmental Protection Agency |
| GHG |
Greenhouse Gas |
| GRI |
Global Reporting Initiative |
| HES |
Health, Environment and Safety |
| HESMS |
Health, Environment and Safety Management System |
| IIR |
Injury and Illness Incidence Rate (Incidents per 100 workers/year) |
| ILO |
International Labour Organization |
| IPIECA |
International Petroleum Industry Environmental Conservation Association |
| NGO |
Non-governmental Organization |
| Occidental (Oxy) |
Occidental Petroleum Corporation, together with its subsidiaries |
| OSHA |
U.S. Occupational Safety and Health Administration |
| TRI |
Toxics Release Inventory |