TO:	ALL CLEARING PARTICIPANTS
FROM:	CLIENT SERVICES AND SUPPORT
DATE:	September 20, 2007
SUBJECT:	Chicago Climate Exchange Margin Rate Nitrogen Financial Instrument (Annual) Futures (NFI-A)

The following margin intervals are effective with the launch of Nitrogen Financial Instrument (Annual) Futures (NFI-A).

CCFE Contract (NFI-A)	Margin
Nitrogen Financial Instrument (Annual) Futures (NFI – A)	$1500
NFI- A Spot Month	$2250

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

John Compall		john.compall@clearingcorp.com
Richard Crilly	312-786-3842	richard.crilly@clearingcorp.com
Marc MacQuarrie	312-786-5732	marc.macquarrie@clearingcorp.com
Client Services and Support Group	312-786-5718	css@clearingcorp.com
Clearing Corporation Web Site		http://www.clearingcorp.com