TO:	ALL CLEARING PARTICIPANTS
FROM:	CLIENT SERVICES AND SUPPORT
DATE:	February 20, 2007
SUBJECT:	Chicago Climate Exchange Margin Rate NFI- OS

The following margin intervals are effective with the launch of Nitrogen Financial Instrument Futures (NFI – OS) on the Chicago Climate Futures Exchange.

Contract	Margin
Nitrogen Financial Instruments Futures Non-Expiration Month	$550
Nitrogen Financial Instruments Futures Expiration Month	$825

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