EX-1 3 dex1.txt JOINT FILING AGREEMENT Exhibit L --------- JOINT FILING AGREEMENT ---------------------- Joint Filing Agreement, dated as of February 28, 2002, by and among Mellon Ventures, L.P., MVMA, L.P. and MVMA, Inc. Each of the parties hereto hereby agrees that it shall jointly file any schedules, forms or other documents, including any amendments thereto, required to be filed pursuant to Securities Exchange Act of 1934, as amended, and the Securities Act of 1933, as amended, with the other parties hereto in respect of the transactions contemplated by the Securities Purchase Agreement, dated as of February 20, 2002, among Carrizo Oil & Gas, Inc., Mellon Ventures, L.P. and Steven A. Webster, and by the Securities Purchase Agreement, dated as of December 15, 1999, among Carrizo Oil & Gas, Inc., CB Capital Investors, L.P., Mellon Ventures, L.P., Douglas A.P. Hamilton, Paul B. Loyd, Jr. and Steven A. Webster. Filings specifically, but not exclusively, contemplated by this Agreement are a Schedule 13D and a Form 3. Dated: February 28, 2002 MELLON VENTURES, L.P. by MVMA, L.P., its general partner by MVMA, Inc., its general partner By: /s/ Paul D. Cohn ------------------------------- Paul D. Cohn Vice President and Director MVMA, L.P. by MVMA, Inc., its general partner By: /s/ Paul D. Cohn ------------------------------- Paul D. Cohn Vice President and Director MVMA, INC. By: /s/ Paul D. Cohn ------------------------------- Paul D. Cohn Vice President and Director