• Tariff 8001, effective June 1, 1997
• Supplement 1, effective July 10, 2000
• Supplement 2, effective February 1, 2005
• Supplement 3, effective December 7, 2008
• Supplement 4, effective March 1, 2009
• Tariff 8100-A, effective September 1, 2006
• Tariff 8200 (html or pdf), effective May 2, 2007