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Goldman Sachs to switch to RBOB on commodity index
Wed Jun 7, 2006 6:18 PM ET

NEW YORK, June 7 (Reuters) - Goldman, Sachs & Co. will transition from the NYMEX New York Harbor unleaded futures contract
to the reformulated gasoline blendstock for oxygen blending contract for its Goldman Sachs Commodity Index, the company said in
a release on Wednesday.

“In order to promote an orderly transition, the GSCI will roll from the HU (unleaded) contract to the RB (RBOB) contract over the
period from August through October, 2006,” Goldman Sachs said in its release.

“Specifically, one-third of the portion of the GSCI attributable to the HU contract will be rolled into the RB contract during each of the
regularly scheduled GSCI roll periods in August, September and October, 2006," Goldman said.

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cme @

Chicago Mercantile Exchange

20 South Wacker Drive 312/930.1000 tel
Chicago, IL 60606-7499 312/466.4410 fax
www.cme.com

June 9, 2006

Ms. Eileen Donovan
Office of the Secretariat
Commodity Futures Trading Commission :

Three Lafayette Centre i 7

1155 21* Street, NW is
Washington, DC 20581 ; ii

5

é OQ

RE: — Section Sc(c)(1) and Regulation Section 40.6. Certification of Revisions to the Goldnfan

Sachs Commodity Index for September 2006 through January 2007. CME Submission
#06-53.

Dear Ms. Donovan:

On Wednesday, June 7, 2006, Goldman Sachs announced changes to the composition of the
September 2006 through January 2007 Goldman Sachs Commodity Index (“GSCI”) Futures and
Options contracts. These changes are necessary due to the transition from the New York Harbor
Unleaded Gasoline ("HU") futures contract to the Reformulated Gasoline Blendstock for Oxygen
Blending ("RB") futures contract at the New York Mercantile Exchange. Notice that none of the
affected contracts months are listed for trading, so these changes do not affect contracts with
open interest. The first of the affected contract months (September 2006) is scheduled to begin
trading on Friday, June 16.

As described in the attached announcements, Goldman Sachs will replace one-third of the HU
with RB each month beginning with the September 2006 contract month. As a result, the
gasoline component in the September 2006 contract will consist of 1/3 RB and 2/3 HU; the
October 2006 contract will consist of 2/3 RB and 1/3 HU; and the November 2006 and
subsequent contract months will consist of only RB with no HU.

This change also will require revisions to the Normalizing Constant for the September 2006,
October 2006, and November 2006 contract months. The Exchange will notify the Commission
via separate submissions of these revised values as they are calculated and become available.



Ms. Eileen Donovan
GSCI Revisions
June 9, 2006

Page 2

The Exchange certifies that these amendments comply with the Commodity Exchange Act and
the rules thereunder.

If you have any questions regarding this submission, please contact Mr. Paul Peterson at (312)

930-4587 or via e-mail at ppeterso@cme.com. Please refer to CME Submission #06-53 in all
correspondence regarding this matter.

Sincerely,

John W. Labuszewski, Managing Director
Research & Product Development


Ms. Eileen Donovan
GSCI Revisions
June 9, 2006

Page 3

From: Goldman Sachs Commodities

Sent: Thursday, June 08, 2006 11:06 AM

Subject: NEW GSCI WEIGHTS FOR THE GASOLINE CONTRACT
Importance: High

“NEW WEIGHTS FOR THE GASOLINE CONTRACT"

Goldman, Sachs & Co. ("Goldman Sachs") has determined to modify the
composition of the Goldman Sachs Commodity Index (the "GSCI") to
reflect the transition from the New York Harbor Unleaded Gasoline
("Hu") futures contract to the Reformulated Gasoline Blendstock for
Oxygen Blending ("RB") futures contract on the New York Mercantile
Exchange. Goldman Sachs has determined that the RB contract satisfies
the criteria for inclusion in the GSCI and that the RB contract will
replace the HU contract_in the GSCI. In order to promote an orderly
transition, the GSCI will roll from the HU contract to the RB contract
over the period from August through October, 2006.

Specifically, one-third of the portion of the GSCI attributable to the
HU contract will be rolled into the RB contract during each of the
regularly scheduled GSCI roll periods in August, September and October,
2006. The Contract Production weights (as defined in the GSCI Manual)
that will be in effect for each commodity included in the GSCI
subsequent to the completion of this roll are attached. Goldman Sachs
will continue to monitor developments in the commodity markets and will
make any further changes to the composition or methodology of the GSCI
that are appropriate, in accordance with the objectives outlined in the
GSCI Manual.

In addition, Goldman sachs wishes to_ acknowledge the assistance and —
cooperation of the New York Mercantile Exchange in the process by which
Goldman Sachs has made the determination to include the RB contract in
the GSCI.

Contract Current Aug roll Sep roll] Oct roll

Un]. Gasoline (HU) 108332.7 72221.80  36110.90 0
unl. Gasoline (RB) 0 36110.90 72221.80 108332.7