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<div class="ocr">United States Department of the Interior

MINERALS MANAGEMENT SERVICE
Washington, DC 20240

MAY 0.6 2010

Mr. Marvin E. Odum
President, Shell Oil Company
One Shell Plaza

P.O. Box 2463

Houston, Texas 77252-2463

Dear Mr. Odum:

The recent and ongoing tragedy of the Deepwater Horizon incident in the Gulf of Mexico
highlights the importance of taking every step necessary to ensure the safety of all
offshore drilling operations.

By this letter, , we request that Shell provide detailed information with respect to
additional safety procedures that the company is proposing to undertake in light of the
Deepwater Horizon disaster. Please provide us with any such information on or before
May 18, 2010.

We recognize that Shell may have information regarding the exploratory drilling activity
that Shell is seeking to undertake in the Chukchi and Beaufort Seas, and which you
believe may be pertinent to the expanded review that we will be undertaking of the
company’s APDs, based on the Deepwater Horizon disaster. This information may
include any additional safety procedures that the company is proposing to undertake in
light of the Deepwater Horizon disaster. Please provide us with any such information on
or before May 18, 2010.

Sincerely,

BEM tf

S. Elizabeth Birnbaum
Director

TAKE PRIDE @==— 2
INAM ERICA pw
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