February 8, 2007

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 07.17: Notification of
Housekeeping Amendments to Certain Chapter 11 and 11G Rules.

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 certain
Chapter 11 and 11G Rules, to be effective as of February 12, 2007.

Amendments to Exchange Rules 11.57(E), 11.57A(C), 11.66 and 11G.18(E) are house-
keeping in nature and correctly reflect that orders must be electronically entered and resting for
five seconds (rather than the 10 seconds previously required on ACCESS®) before they can be
accepted by another trader. This five-second standard has been applied to all NYMEX contracts
offered on the Globex® platform, and these amendments make clear that the five-second
standard uniformly applies to all Exchange electronic trading venues.

Pursuant to Section S5c(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.

If you have any questions, please contact Daniela Conti-Maiorana, Associate Compliance
Counsel, at (212) 299-2861, or myself at (212) 299-2940.

Sincerely,

Nancy M. Minett
Vice President, Compliance

ce: Thomas LaSala
Brian Regan



Rule 11G.18, Trading Standards for Electronic Trading Systems

(E) A GLOBEX User may not enter an order for his own account, an account in which he-has a proprietary
interest, a discretionary account for an immediate family member or an account in which his employer or
any employee of his employer has an interest which reflects the opposite side of a customer order already
resting in the applicable Exchange electronic trading system, unless the customer order has rested in the
applicable Exchange electronic trading system for at least ten five seconds.

Rule 11.57, Trading Standards for Electronic Trading Systems

(E) An Electronic Trader or an Authorized Terminal User in the case of trading on NYMEX ACCESS® or a
User or User Agent in the case of trading on NYMEX ClearPort® Trading may not enter an order for his
own account, an account in which he has a proprietary interest, a discretionary account for an immediate
family member or an account in which his employer or any employee of his employer has an interest
which reflects the opposite side of a customer order already resting in the applicable Exchange electronic
trading system, unless the customer order has rested in the applicable Exchange electronic trading
system for at least ten five seconds.

Rule 11.57A, Permissible Pre-Execution Discussions

(C) A period of at least 40 five seconds shall elapse between entry of the two orders during which the
order first entered is resting in the market.

Rule 11.66, Restriction on Simultaneous Buy and Sell Orders on Exchange Electronic Trading
Systems

With respect to trading on NYMEX ACCESS®, an Electronic Trader or Authorized Terminal User may not
enter orders for different principals as a cross-trade into the system. With respect to trading on NYMEX
ClearPort® Trading, a User or User Agent may not enter orders for different principals as a cross-trade
into the system.

Instead, an Electronic Trader, Authorized Terminal User, User or User Agent, as applicable, shall enter
orders into the system strictly on the basis of time of receipt of the orders. An Electronic Trader,
Authorized Terminal User, User or User Agent, as applicable, who has entered a buy (sell) order for one
principal into the system shall not enter a sell (buy) order for another principal for the same commodity,
month and price or for the same option (both puts or calls, with the same underlying contract for future
delivery, expiration date and strike price) unless the first order has rested in the applicable system for at
least ten{49) five seconds.