• Allstate Insurance Company
• ARCO / BP
• Auburn Alumni University Real Estate Foundation
• Brasher Law Firm, L.C.
• Burns Bros, Inc.
• Chevron Corp.
• City of Galt, CA
• Coastal Corp.
• The Coca Cola Company
• Conoco-Phillips Company (Tosco)
• ExxonMobil Corporation and Affiliates
• EZ Serve Petroleum
• Federal Pacific Electric
• First Interstate Bank

• Focus Environmental, Inc.
• Fognani & Faught, PLLC
• Georgia Pacific Corp.
• K.H.Dale (private party)
• Parke - Davis
• Pfizer, Inc.
• S. Olivieri (private party)
• Shell Oil Company
• Sierra Quality Canners, Inc.
• Ultramar Corp.
• USA Waste
• Valero Energy Corp.
• Warner-Lambert Pharmaceutical Company
• Whittaker Corp.