EXHIBIT 23.6 October 1, 1999 Mr. Bill Gardiner Chief Financial Officer King Ranch, Inc. 1415 Louisiana, Suite 2300 Wedge International Tower Houston, TX 77002 Dear Bill: We hereby consent to the inclusion of our opinion as an exhibit to the Form S-4 Registration Statement under the Securities Act of 1933 of the Company and the reference to and summary of our opinion in such Form S-4 Registration Statement. /S/ ERNST & YOUNG LLP ----------------------------------- Ernst & Young LLP