EXHIBIT 10.1
 
LENDER CERTIFICATE
 
 
December 16, 2008
 
 

 

 To:  Guaranty Bank,    as Administrative Agent

 
The Borrower, the Guarantors, the Administrative Agent and the Lenders have
entered into that certain Credit Agreement dated as of May 25, 2006 (as the same
has been and may hereafter be amended, restated, supplemented or otherwise
modified from time to time, the “Credit Agreement”).  Unless otherwise defined
herein, capitalized terms used herein have the meaning specified in the Credit
Agreement.

Please be advised that the undersigned has agreed (a) to become a Lender under
the Credit Agreement effective December 16, 2008 (the “Effective Date”) with a
Commitment of $27,500,000 and (b) that, from and after the Effective Date, it
shall be deemed to be a Lender in all respects under the Credit Agreement and
the other Loan Documents.

Very truly yours,

UNION BANK OF CALIFORNIA, N.A.

By:           /s/Sean Murphy
Name:      Sean Murphy
Title:         Senior Vice President
 
 

--------------------------------------------------------------------------------

 
Accepted and Agreed:
 
GUARANTY BANK,
as Administrative Agent
 
 
 
By:       /s/Kelly L. Elmore III
Name:  Kelly Elmore III 
Title:    Senior Vice President
 
 

--------------------------------------------------------------------------------

 
Accepted and Agreed:
 
CARRIZO OIL & GAS, INC.
 
 
 
By:       /s/Paul F. Boling
Name:  Paul F. Boling
Title:     Vice President and Chief Financial Officer
 
 

--------------------------------------------------------------------------------