September 8, 2005

Via E-Mail

Office of the Secretariat

Commodity Futures Trading Commission
Three Lafayette Centre

1155 21st Street, N.W.

Washington, D.C. 20581

Re: Rule Certification. NYMEX Submission 05.161: Notification of
Amendments to NYMEX Rules 9.26, 9.27, and 9.34 for Three New
Natural Gas Basis Swap Futures Contracts.

Dear Ms. Jean Webb:

The New York Mercantile Exchange ("NYMEX" or the "Exchange" is notifying the
Commodity Futures Trading Commission (“CFTC” or ““Commission”) of amendments to
NYMEX Rules 9.26, All Month/Any One Month Position Accountability; 9.27, Expiration and
Current Delivery Month Position Limits or Position Accountability; and 9.34, Reporting Levels.

Effective for trade date September 12, 2005, these amendments include the addition of
position limits, accountability levels, and reporting levels for three new Natural Gas Basis Swap
Futures Contracts: Sonat Basis (Platts IFERC) Futures Contract, Transco Zone 4 Basis (Platts
IFERC) Futures Contract, and FGT Zone 3 Basis (Platts FERC) Futures Contract. Pursuant to
Section 5c(c) of the Commodity Exchange Act (“Act”) and CFTC Rule 40.6, the Exchange
hereby certifies that the attached rule amendment complies with the Act, including regulations
under the Act.

Should you have any questions concerning the above, please contact Anthony V.
Densieski, Senior Director, Market Surveillance, at (212) 299-2881, or Nicholas G. Galati,
Director, Market Surveillance, at (212) 299-2920.

Very truly yours,

Thomas LaSala
Senior Vice President
Compliance and Risk Management

cc: Brian Regan
Nancy Minett


(Additions are in bold and underlined.)
NYMEX Rule 9.26, All Month/Any One Month Position Accountability

Sections (A) through (D)(IV) Cash-Settled Coal Products remain unchanged.

(D) IV. Cash-Settled Natural Gas Products Net Futures or Futures-Equivalent
Position Accountability Levels

Sonat Basis (Platts IFERC) Futures Contract 10,000 contracts

Transco Zone 4 Basis (Platts FERC) Futures Contract 10,000 contracts

FGT 3 Basis (Platts IFERC) Futures Contract 10,000 contracts

(Inserted between Trunkline LA Basis and San Juan Index.)

Remainder of the Rule is unchanged.

NYMEX Rule 9.27, Expiration and Current Delivery Month Position Limits or Position Accountability

Sections (A) through (B)(IV) Cash-Settled Coal Products remain unchanged.

(B) IV. Cash-Settled Natural Gas Products Net Futures or Futures-Equivalent
Expiration Position Limits

Sonat Basis (Platts IFERC) Futures Contract 500 contracts

Transco Zone 4 Basis (Platts IFERC) Futures Contract 500 contracts

FGT 3 Basis (Platts IFERC) Futures Contract 500 contracts

(Inserted between Trunkline LA Basis and San Juan Index.)

Remainder of the Rule is unchanged.

NYMEX Rule 9.34, Reporting Levels
Section (A), Commodity remains unchanged.
Futures Contracts listed for Trading Only on NYMEX ClearPortTM Trading

and also Listed for Clearing of Off-Exchange Transactions Through NYMEX
ClearPortTM Clearing

Sonat Basis (Platts IFERC) Futures Contract 25 contracts
Transco Zone 4 Basis (Platts IFERC) Futures Contract 25 contracts
FGT 3 Basis (Platts IFERC) Futures Contract 25 contracts

(Inserted between Trunkline LA Basis and San Juan Index.)

Remainder of the Rule is unchanged.