TO:	ALL CLEARING PARTICIPANTS
FROM:	CLIENT SERVICES AND SUPPORT
DATE:	January 26, 2006
SUBJECT:	Chicago Climate Exchange Margin Rate Change

The following margin intervals are effective end of day Thursday January 26, 2006, through the midday variation cycle on Tuesday January 31, 2006. The margin level will revert to $1,300 effective the end of day on Monday.

Contract	From	To
Sulfur Dioxide	$1300	$1950

Should you have any questions, please call or e-mail one of the following Client Services and Support Representatives: