1. Downstream Technology and Services Department, Chevron Technical Center, 100 Chevron Way, Richmond, California 94801, United States
2. Omnicon Consultants Inc., P.O. Box 3437, Sherwood Park Main, Sherwood Park, Alberta T8H 2T3, Canada
3. Upgrading Solutions Inc., 4751-151 Street, Edmonton, Alberta T6H 5N9, Canada