exv10w15







Exhibit 10.15



Execution
Copy


Base Contract for Sale and Purchase of Natural Gas



This Base
Contract is entered into as of the following date: June 1st, 2004 The parties to
this Base Contract are the following:




	 	 	 	 	 	 	 
	J. ARON & COMPANY (“ARON”)	and	ULTRA RESOURCES, INC. (“COUNTERPARTY”)
	85 Broad Street, New York, NY 10004	 	363 N. Sam Houston Pkwy. E., Suite 1200, Houston, TX 77060
	Duns
#
00-698-0312
	 	Duns
#
07-110-9974

	Contract
#
	 	Contract
#

	Attn: Jim Brush
	 	Attn: Natural Gas Marketing, Contract Administration

	Phone: (212)902-5852


	 	Fax: 212) 493 9847

	 	Phone: 281.876.0120 x.307

	 	Fax: 281.876.2831

	Federal Tax ID Number: 13-3092284
	 	Federal Tax ID Number: 83-0320643

	 
	 	 	 	 	 	 
	Notices:	 	Notices, Confirmations, Invoices and Payments:
	85 Broad Street, New York, NY 10004	 	363 N. Sam Houston Pkwy. E., Suite 1200, Houston, TX 77060
	Attn: Energy Operations, Manager
	 	Attn: Natural Gas Marketing

	Phone: 212-902-7349


	 	Fax: 212-493 9847

	 	Phone: 281.876.0120 x.307

	 	Fax: 281.876.2831

	 
	 	 	 	 	 	 
	Confirmations:	 	 	 	 
	85 Broad Street, New York, NY 10004	 	 	 	 
	Attn: Contract Execution Department
	 	 	 	 
	Phone: 212-357-3606


	 	Fax: 212-344-3457
	 	 	 	 
	 
	 	 	 	 	 	 
	Invoices and Payments:	 	 	 	 
	85 Broad Street, New York, NY 10004	 	 	 	 
	Attn: Energy Operations, Manager
	 	 	 	 
	Phone: 212-902-7349


	 	Fax: 212-344-3457
	 	 	 	 
	 
	 	 	 	 	 	 
	Wire Transfer or
ACH Nos. (if applicable):	 	Wire Transfer or
ACH Nos. (if applicable):
	BANK: Citibank, N.A
	 	BANK: Bank One
N.A.— Chicago

	ABA: 021000089,
	 	ABA: 102001017

	ACCT: 09292521
	 	ACCT: 192 648 101

	Other Details: For the
account of J. Aron & Co., New York
	 	Other Details: For the
Account of Ultra Resources Inc.






This Base Contract incorporates by reference for all purposes the General Terms and Conditions for
Sale and Purchase of Natural Gas published by the North American Energy Standards Board. The
parties hereby agree to the following provisions offered in said General Terms and Conditions. In
the event the parties fail to check a box, the specified default
provision shall apply. Select
only one box from each section:




	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 
	 	Section 1.2

Transaction 

Procedure

	þ
o


	Oral (default) 
Written
	 	 	Section 7.2

Payment Date
	þ

o	25th Day of Month following Month of 
delivery (default) 

_____ Day of Month following Month of delivery	 
	 	 	 	 	 	 
	 	Section 2.5

Confirm 

Deadline

	þ
o
	2 Business Days after receipt (default)

_____ Business Days after receipt
	 	 	Section 7.2

Method of 

Payment
	þ
o
o
	Wire transfer (default) 

Automated Clearinghouse
Credit (ACH)
Check	 
	 	 	 	 	 	 
	 	Section 2.6

Confirming 

Party

	o
o
þ	Seller (default)

Buyer

Aron
	 	 	Section 7.7

Netting
	þ
o	Netting applies (default)

Netting does not apply	 
	 	 	 	 	 	 
	 	Section 3.2
Performance
Obligation

	o
þ	Cover Standard (default) 
Spot Price Standard
	 	 	Section 10.3.1

Early Termination 

Damages
	þ
o	Early Termination Damages Apply (default)

Early Termination Damages Do Not Apply	 
	 	 	 	 	 	 	 	 
	 	Note: The following Spot Price Publication applies to both of
the Immediately preceding.	 	 	Section 10.3.2

Other Agreement 

Setoffs	þ
o	Other Agreement Setoffs Apply (default)

Other Agreement Setoffs Do Not Apply	 
	 	 	 	 	 	 	 	 
	 	Section 2.26

Spot Price 

Publication

	þ
o	Gas Daily Midpoint
(default) 
 
	 	 	Section 14.5

Choice Of Law
	 	
NEW
YORK
	 
	 	 	 	 	 	 
	 	Section 6

Taxes

	þ

o	Buyer Pays At and After Delivery Point

(default)
Seller Pays Before and At
Delivery Point
	 	 	Section 14.10

Confidentiality
	o
þ	Confidentiality applies (default)

Confidentiality does not apply	 
	 	 	 	 	 	 
	 	þ  Special
Provisions Number of sheets attached: 4	 	 	o  Addendum(s):

	 
	 	 
	 	 	 	 	 	 	 	 
	 	 	 	 	 	 




IN WITNESS WHEREOF, the parties hereto have executed this Base Contract in duplicate.




	 	 	 	 	 	 	 	 
	J. ARON & COMPANY
 	 	ULTRA RESOURCES, INC.
 	 
	 
	By  	/s/
Steven D. Pruett
 	 	By  	/s/
Stuart Nance 	 
	 	Name:  	Steven D. Pruett 	 	 	Name:  	Stuart Nance 	 
	 	Title:  	Managing Director 	 	 	Title:  	Director 	 






			
	 	 	 
	 
	 

 
	 	NAESB Standard 6.3.1

April 19, 2002