August 23, 2006

Via E-Mail

Office of the Acting Secretary
Commodity Futures Trading Commission
Three Lafayette Centre

1155 21st Street, N.W.

Washington, D.C. 20581

Re: Rule Certification. NYMEX Submission 06.100: Notification of
Amendments to NYMEX Rule 6.40B and Exchange Rule 11G.30,
Trading at Settlement.

Dear Ms. Eileen Donovan:

The New York Mercantile Exchange ("NYMEX" or the "Exchange") is notifying the
Commodity Futures Trading Commission (“*CFTC” or Commission”) of amendments to
NYMEX Rule 6.40B and Exchange Rule 11G.30, Trading at Settlement (“TAS”).

Effective with the commencement of side-by-side trading of NYMEX physical contracts
on CME GLOBEX® on September 4, 2006 for trade date September 5, 2006, the amendments
make available TAS trading in the second contract month on both the trading floor and CME
GLOBEX®. Also, trading in TAS in the physical contracts, whether on the trading floor or
electronically on CME GLOBEX®, will be available at a differential to settlement price, similar
to the trading on CME GLOBEX® on the cash-settled look-alike contracts. Pursuant to Section
5e(c) of the Commodity Exchange Act (“Act”) and CFTC Rule 40.6, the Exchange hereby
certifies that the attached rule amendments comply with the Act, including regulations under the
Act.

Should you have any questions concerning the above, please contact Nancy Minett, Vice
President, Compliance, at (212) 299-2940, or the undersigned at (212) 299-2897.

Very truly yours,

Thomas F. LaSala
Senior Vice President

Compliance and Risk Management
cc: Brian Regan
Nancy Minett


(Additions are in bold/underlined; deletions are in bold/strikethrough.)

Rule 11G.30 - Trading at Settlement
Contracts Eligible for Trading at Settlement or “TAS” Transactions on GLOBEX®.

Until further notice, the Board has authorized the availability of Trading at Settlement transactions in such
delivery months as specified by the Board for the following futures contracts available on GLOBEX.

Contracts available include:

Commodity Code on

Globex® Name Cleared Product
WST WTI Crude Oil Financial TAS WS
RTT RBOB Gasoline Financial TAS RT
BHT Heating Oil Financial TAS BH
HPT Natural Gas Financial TAS HP
HHT Natural Gas Financial (Last Day) TAS HH
BBT Brent Crude Oil Financial TAS BB
CLT Light Sweet Crude Oil TAS cL
HOT Heating Oil TAS HO
NGT Natural Gas TAS NG
HUT Unleaded Gasoline TAS HU
RBT RBOB Gasoline TAS RB

The front two (2) trading months of the products listed above shall be available for trading (except on the

last trading day in the physically delivered contracts). Until further notice, the hours for trading shall
be the hours that the applicable contracts are available for trading on GLOBEX®.

Rule 6.40B - Trading at Settlement (Pilot Program)

(A) Trading at Settlement Procedure. A floor member may enter into a transaction at the settlement price
through open outcry with another floor member in any futures contract and delivery month specified in
Section (C) of this rule. Any such trade (collectively referred to as a trading at settlement or "TAS") shall
be made by open outcry no later than 2:30 p.m. New York Time or such other time as designated by the
Board on that same trading day in the trading ring designated for trading in the particular contract.

(B) Prohibition on TAS Cross Trades. A Floor Member who has in hand buy and sell TAS orders of
different principals for the same eligible commodity for future delivery in the same eligible delivery month
shall not execute such orders directly between such principals. This prohibition does not apply to Brent
Crude Oil and Gasoil futures contracts.

(C) Reporting and Recordation. All TAS transactions shall be identified as such on the executing
member's trading records prepared in accordance with Rule 6.10 ("Reporting of Trades Executed on the
Trading Floor").

(D) Transactions Eligible for Board Approval For Trading at Settlement Procedures.


The Board may, by resolution, authorize the execution of transactions in any or all of the futures contracts
and delivery months specified below pursuant to the TAS order procedures set forth in this Rule 6.40B.

Futures Contract Delivery Month
Light Sweet Crude Oil Spot Month (except on the last trading day) and also Second Nearby Month
Brent Crude OH Spot Month

arby-_Month (e.g.cale month following the Spot Month)

Heating Oil Spot Month (except on the last trading day) and also Second Nearby Month
Natural Gas Spot Month (except on the last trading day) and also Second Nearby Month
Unleaded Gasoline Spot Month (except on the last trading day) and also Second Nearby Month
RBOB Gasoline Spot Month (except on the last trading day) and also Second Nearby Month
Gasoil Spot Month and-Second Nearby Month

(E) This pilot program shall expire on the following dates:

Futures Contract Expiration Date

Light Sweet Crude Oil Extended until further notice
Brent Crude-Oil Extended_untilfurther notice
Heating Oil Extended until further notice
Natural Gas Extended until further notice
Unleaded Gasoline Extended until further notice
RBOB Gasoline Extended until further notice
Gasoil Extended-_untifurther notice