Rule 634.05

Rule 638.05

Rule 639.05

Rule 640.05

Rule 641.05

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0:004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $8-004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0-004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price

fluctuation shall be $0064 $0.0025 per MMBtu. There shall be no maximum
price fluctuation. ‘


Rule 627.05

Rule 628.05

Rule 629.05

Rule 630.05

Rule 631.05

Rule 632.05

Rule 633.05

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $6004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $6:004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $8064 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $9004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price

fluctuation shall be $9-004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0-004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $6084 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price

fluctuation shall be $9-004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.


205 SN 16 AM 7 26

iE ec Wenerdey, June 15, 2005
BY EMAIL OFC.OF THE S

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 # 05.106: Notification of
Amendments to Currently Listed Natural Gas Basis Futures
Contracts related to Prices and Fluctuations rules

Dear CFTC Commissioners:

The New York Mercantile Exchange, Inc. ("NYMEX" or the "Exchange" is notifying the
Commodity Futures Trading Commission (“CFTC” or “Commission”) of certain rule changes to
be implemented effective for trade date Monday, June 20, 2005 to amend the minimum price
fluctuation from $0.001 to $0.0025 for 27 natural gas basis futures contracts.

These rule amendments will amend Rules 509.05, 516.05, 517.05, 518.05, 519.05,
520.05, 521.05, 619.05, 620.05, 621.05, 622.05, 623.05, 624.05, 625.05, 626.05, 627.05, 628.05,
629.05, 630.05, 631.05, 632.05, 633.05, 634.05, 638.05, 639.05, 640.05, and 641.05 to allow for
a minimum price fluctuation of $0.0025 per mmbtu rather than the previously indicated $0.001

Pursuant to Section Sc(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
tegulations under the Act. These changes will go into effect on Sunday, June 19, 2005 for trade
date Monday June 20, 2005.

Should you have any questions conceming the above, please contact Sean Kiley (212-
299-2613, skiley@nymex.com); or the undersigned (212-299-2390, rlevin@nymex.com).

Very truly yours,

Robert A. Levin
Senior Vice President, Research
Att.

Rule Amendments


(Underlining

Rule 509.05

Rule 516.05

Rule 517.05

Rule 518.05

Rule 519.05

Rule 520.05

Rule 521.05

refers to inserts, and strikethroughs refer to deletions)

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0.00+ $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0-004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0:00+ $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price

fluctuation shall be $0004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.


Rule 619.05

Rule 620.05

Rule 621.05

Rule 622.05

Rule 623.05

Rule 624.05

Rule 625.05

Rule 626.05

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0-004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0-004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0:004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0-004 $0.0025 per MMBtu. There shall be no maximum
price fluctuation.

Prices and Fluctuations

Prices shall be quoted in U.S. dollars and cents per MMBtu. The minimum price
fluctuation shall be $0004 $0.0025 per MMBtu. There shall be no maximum

price fluctuation.

Prices and Fluctuations