TO:	ALL CLEARING PARTICIPANTS
FROM:	CLIENT SERVICES AND SUPPORT
DATE:	August 23, 2007
SUBJECT:	Chicago Climate Exchange Margin Certified Emission Reduction Futures (CER)

The following margin intervals are effective with the launch of Certified Emission Reduction Futures (CER) on the Chicago Climate Futures Exchange.

Contract	Margin
Certified Emissions Reduction (CER)	$1400

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