Document Jrb1d40EadMDzG0Y61jVZVO6e

~ Shell Chemicals April 10, 2007 Senior Contract Administrator American Petroleum Institute 1220 L Street, NW Washington, DC 20005 SUBJECT: Shell/API Contract Amendment 4 for Shanghai Health Study Dear Sir/Madam; Attached please find Shell Chemical LP signed contract No. 01-0000-4746, amendment no. 4. A copy was faxed to API on April 10,2007. Please contact me at 713-241-2521, if there are any questions. Best regards, Patsy Clegg Product Steward, HSSE Attachment: Shell Chemical LP signed contract No. 01-0000-4746, amendment no. 4. BC wlo attachment: Stacy P. Methvin Edward Simpson Phil J Snyder HSSE Records Management, LEG.02.01 (EVT + 7) SH ELL-MCCLU RG-06S742