Any notice to Occidental provided for in this Agreement will be given to its Secretary at 5 Greenway Plaza, Suite 110, Houston, Texas 77046, and any notice to the Grantee will be addressed to the Grantee at his or her address currently on file with Occidental. Any written notice will be deemed to be duly given when received if delivered personally or sent by telecopy, e-mail, or the United States mail, first class registered mail, postage and fees prepaid, and addressed as provided in this paragraph. Any party may change the address to which notices are to be given by written notice to the other party as specified in the preceding sentence.