Dear Ms. Sosa:

As you know, on March 1, 2007, DR-CAFTA went into effect for the Dominican Republic (the "Republic"). This letter provides official notice by Corona Materials, LLC on behalf of itself and its subsidiary, Walvis Investments, S.A. (collectively "CM" or "Corona") of the Republic's violations of Chapter 10 ofthe DR-CAFTA and constitutes CM's Notice oflntent pursuant to Article 10.16(2) ofDR-CAFTA.

In accordance with Article 10.16(2) of DR-CAFTA, CM's official name, address and place of incorporation are: