TO:	ALL CLEARING PARTICIPANTS
FROM:	CLIENT SERVICES AND SUPPORT
DATE:	December 10, 2007
SUBJECT:	Chicago Climate Futures Exchange Delivery, Final Settlement, and Option Expiration Dates for December 2007 Contracts

Listed below are the relevant delivery and expiration dates for the Chicago Climate Futures Exchange December 2007 contracts.

Delivery Dates
Product Group	First Position	First Notice	First Delivery	Last Trade	Last Notice	Last Delivery
Sulfur Dioxide SFI	Dec 17	Dec 18	Dec 19	Dec 31	Jan 2	Jan 3
Nitrogen NFI-OS	Dec 18	Dec 19	Dec 20	Dec 27	Dec 28	Dec 31
Carbon CFI	Jan 2	Jan 3	Jan 4	Dec 31	Jan 3	Jan 7

To help promote error free delivery processing, the Clearing Corporation requires all tender quantities be confirmed before the tender record will be included in delivery processing for assignment. The confirmation is performed using the Tender Confirmation screen in OTIS®. Clearing Participants are reminded of the importance of verifying this information before confirming their tender records.

Option Expiration Dates
Product	Code	Expiration
Sulfur Dioxide SFI	KS	Dec 13

The deadline to submit at the money, out of the money exercise requests and cancellation of in the money exercises is 5:00 p.m. on expiration day.  Clearing Participants that need to verify their authorization code for special exercise requests should contact CSS. All exercise activity is performed using the Option Exercise Entry and Option Exercise Inquiry selections in Position Management.

Cash Settle/Expiration Dates
Product	Code	Last Trade	Cash Settle / Expiration
CER – Certified Emissions	WR	Dec 31	Dec 31
ECFI – European Carbon Financial Instrument	KE	Dec 17	Dec 17
ECO – Clean Energy Index Futures	WE	Dec 21	Dec 21

CCorp will expire all positions on last trading day.

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