TO:	ALL CLEARING PARTICIPANTS
FROM:	CLIENT SERVICES AND SUPPORT
DATE:	April 16, 2008
SUBJECT:	Chicago Climate Futures Exchange Margin Spread Credits

Effective April 21, 2008, The Clearing Corporation will apply spread credits to the following products. The spread credit will only be applied to positions in contract months within the same product. Spread credits will not be offered for positions across products.

Product	Spread Credit
Sulfur Financial Instrument (SFI) Futures Vintages	75%
Nitrogen Financial Instrument Annual (NFI-A) Futures Vintages	75%
Nitrogen Financial Instrument (NFI-OS) Futures Vintages	75%

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