(B) Final Deadline for F tions-An- EFM jnveld iting NYMEX-miNY for



June 28, 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 06.79: Notification of
Amendments to NYMEX Rule 11G.23 (“EFBs”), Rule 11G.22,
(“EFMs”), and Deletion of Rule 6.21E, (*EFMs”)

Dear Ms. Eileen A. 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 11G.23, Exchange of NY MEX Cash-Settled “Penultimate Big” Futures for, or in
Connection with, NYMEX “Physical” Futures Transactions (‘“EFBs”); Rule 11G.22, Exchange
of NYMEX miNY Futures for, or in Connection with, NYMEX Futures Transactions (“EFMs”);
and deletion of Rule 6.21E, Exchange of NYMEX miNY Futures for, or in Connection with,
NYMEX Futures Transactions.

Effective June 29, 2006, the changes seek to allow for the posting of any eligible EFMs or
EFBs available at a differential to the prior day’s settlement price in addition to the settlement
price itself. Further, the amendments seek to allow these transactions to be posted through
expiration day of the underlying miNY or cash-settled “big” contracts. The Exchange is deleting
Rule 6.21E as this Rule is mirrored in Rule 11G.22. The changes are housekeeping in nature,
and in keeping with prior determinations of the NYMEX Board of Directors. Pursuant to Section
5ce(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, please direct them to the undersigned (212) 299-2897,
and Nancy Minett, Vice President, Compliance, at (212) 299-2940.

Very truly yours,

Thomas LaSala
Senior Vice President
Compliance and Risk Management
ce: Nancy Minett
Brian Regan


(Bold/underlined indicates additions; bold/strikethrough indicates deletions.)

Rule 11G.23, Exchange of NYMEX Cash Settled “Penultimate Big” Futures for, or in
Connection with, NYMEX “Physical” Futures Transactions

(A) General Requirements. An exchange of futures for, or in connection with, cash settled
“Penultimate Big” futures (EFB) consists of two discrete, but related transactions; a purchase
(sale) transaction ina NYMEX cash settled Penultimate Big futures contract and a sale
(purchase) transaction in the related NYMEX “Physical” futures contract. At the time such
transaction is effected, the buyer (seller) of the NYMEX cash settled Penultimate Big shall be the
seller (buyer) of the related NYMEX Physical futures contract.

(B) Final Deadline for Transactions. An EFB involving an expiring NYMEX cash settled
Penultimate Big futures contract month is permitted at any time up to and must be reported to the
Exchange by the close of trading ene-business-day-preeeding on the expiration date of the
NYMEX cash settled Penultimate Big Crude, Natural Gas, Heating Oil and RBOB Gasoline
contracts.

(C) Contract Month and Quantity. An EFB transaction may only be effected for the same contract
month in both of the applicable NYMEX futures contracts.

(D) Transaction Price. An EFB transaction may enly be transacted at the settlement price for the
Physical NYMEX futures contract for the trading session in which the EFB transaction was
reported to the Exchange or at a differential to the settlement price for the Physical NYMEX

futures contract for the trading session preceding the session in which the EFB transaction
was reported to the Exchange.

(E) Floor Reporting Requirements and Deadlines. A report of each EFB transaction must be
given and notice thereof must be posted on the Floor of the Exchange. The report of an EFB
transaction must be given on the Floor prior to the end of the trading session on the day that the
agreement was made, or if such agreement was made after the close of trading, then during the
trading session on the next business day and otherwise in compliance with section (B) above.

(F) Clearing. EFB transactions shall be cleared through the Exchange in accordance with normal
procedures, shall be clearly identified and marked in the manner provided by the Exchange, and
shall be recorded by the Exchange and by the Clearing Members involved.

* * * *

Rule 11G.22, Exchange of NYMEX miNY Futures for, or in Connection with, NYMEX
Futures Transactions

(A) General Requirements. An exchange of futures for, or in connection with, mini futures
(EFM) consists of two discrete, but related transactions; a purchase (sale) transaction in a


NYMEX miNY futures contract and a sale (purchase) transaction in the related NYMEX futures
contract. At the time such transaction is effected, the buyer (seller) of the NYMEX miNY shall
be the seller (buyer) of the related NYMEX futures contract in the ratio designated by the Board
of Directors.

(B) Final Deadline for Transactions. An EFM involving an expiring NYMEX miNY futures
contract month is permitted at any time up to and must be reported to the Exchange by the close
of trading ene-business-day-preeeding on the expiration date of the NYMEX miNY Crude and
Natural Gas contracts.

(C) Contract Month and Quantity. An EFM transaction may only be effected for the same
contract month in both of the applicable NYMEX futures contracts. The quantity of contracts to
be exchanged in the EFM transaction must be consistent with the size ratio then in effect between
the applicable NYMEX miNY NYMEX futures contract listed for trading on NYMEX
ClearPort® Trading and the regular size NYMEX contract listed for trading at NYMEX

@) Transaction Price. An EFM transaction may be transacted at the settlement price for
the Physical NYMEX futures contract for the trading session in which the EFM

transaction was reported to the Exchange, or at a differential to the settlement price for the

Physical NYMEX futures contract for the trading session preceding the session in which
the EFM transaction was reported to the Exchange.

(BE) Floor Reporting Requirements and Deadlines. A report of each EFM transaction must be
given and notice thereof must be posted on the Floor of the Exchange. The report of an EFM
transaction must be given on the Floor prior to the end of the trading session on the day that the
agreement was made, or if such agreement was made after the close of trading, then during the
trading session on the next business day.

(EF) Clearing. EFM transactions shall be cleared through the Exchange in accordance with
normal procedures, shall be clearly identified and marked in the manner provided by the
Exchange, and shall be recorded by the Exchange and by the Clearing Members involved.