Cgg Americas Inc. Watch

from S-4 27 pages Compagnie Générale De Géophysique-Veritas and the Guarantors Party Hereto $350,000,000 91/2% Senior Notes Due 2016 Registration Rights Agreement Dated as of June 9, 2009 Credit Suisse Securities (Europe) Limited Bnp Paribas

from S-4 5 pages (B) the Definition of the Term “Capital Expenditures” Set Forth in Section 1.01 of the Credit Agreement Is Hereby Amended by Inserting After the Word “Investments” Set Forth Therein the Parenthetical “(Other Than Investments of Up to €75,000,000 in the Aggregate Made in Connection With the Massy Sale and Leaseback)”

from S-4 7 pages A. Pursuant to the Credit Agreement, the Lenders and the Issuing Bank Have Extended, and Have Agreed to Extend, Credit to the Borrower. B. the Borrower, Parent and the Lenders Have Agreed to Amend the Credit Agreement as Set Forth Herein. C. Capitalized Terms Used but Not Defined Herein Shall Have the Meanings Assigned to Them in the Credit Agreement. Accordingly, in Consideration of the Mutual Agreements Herein Contained and Other Good and Valuable Consideration, the Sufficiency and Receipt of Which Are Hereby Acknowledged, the Parties Hereto Agree as Follows: Section 1. Amendments. (A) the Definition of the Term “Applicable Percentage” Set Forth in Section 1.01 of the Credit Agreement Is Hereby Amended by Deleting the Tables Set Forth Therein and Substituting Therefor the Following Tables: Eurodollar Spread Abr Spread Corporate Ratings (Term Loans) (Term Loans) Category 2 2.75 % 1.75 % Bb or Better by S&P and Ba1 or Better by Moody’s Category 1 3.00 % 2.00 % All Other Corporate Ratings

from S-4 25 pages Compagnie Générale De Géophysique and the Guarantors Party Hereto $165,000,000 7½% Senior Notes Due 2015 Registration Rights Agreement Dated as of April 28, 2005 Credit Suisse First Boston (Europe) Limited Bnp Paribas Securities Corp. Rbc Capital Markets Corporation Natexis Banques Populaires Section 1. Definitions