Notice to Members

Notice No. 520
10/03/2006

Outright Margin Rate Changes for NYMEX ClearPort® Emissions and Freights Futures Contracts

Effective Date: Thursday, October 5, 2006 (close of business)

Futures Contracts:

Sulfur Dioxide (SO2) Emissions (RS), Tanker Route TD5 West Africa to U.S. Atlantic Coast (TI), Tanker Route TD3 Middle Eastern Gulf to Japan (TL), Tanker Route TD7 North Sea to Europe (TK), and Tanker Route TC2 Europe to U.S. Atlantic Coast (TM)

Contract Months: All Months

NYMEX Division Outright (Scan) Margin Rates For Sulfur Dioxide (SO2) Emissions Futures Contracts

Contract	Clearing Member / Maintenance Margin		Member Customer Initial Margin		Non-Member Customer Initial Margin
	*New*	Old	*New*	Old	*New*	Old
RS	$3,000	$3,500	$3,300	$3,850	$4,050	$4,725

NYMEX Division Outright (Scan) Margin Rates For Freight Futures Contracts

Contract	Clearing Member / Maintenance Margin		Member Customer Initial Margin		Non-Member Customer Initial Margin
	*New*	Old	*New*	Old	*New*	Old
TI	$2,000	$2,500	$2,200	$2,750	$2,700	$3,375
TL	$2,000	$2,500	$2,200	$2,750	$2,700	$3,375
TK	$700	$500	$770	$550	$945	$675

NYMEX Division Outright (Scan) Margins on Tanker Route TC2 Europe to U.S. Atlantic Coast( TM)

Contract	Clearing Member / Maintenance Margin		Member Customer Initial Margin		Non-Member Customer Initial Margin
	*New*	Old	*New*	Old	*New*	Old
Tier 1 - 1st Nearby	$500	$2,500	$550	$2,750	$675	$3,375
Tier 2 - All Other Months	$2,500	$2,500	$2,750	$2,750	$3,375	$3,375

NYMEX Division Outright (Scan) Tanker Route TC2 Europe to U.S. Atlantic Coast ( TM) Tiers

Tiers	*New*	Old
1	1st Nearby	N/A
2	All Other Months	N/A

This notice supersedes all previous notices regarding margin rates for the the Emissions & Freights futures contracts.

Should you have any questions or require any further information, please contact exchangeinfo@nymex.com