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Nalco Shareholders Approve Merger With Ecolab

Nalco Holding Company announced that its stockholders voted to adopt the previously announced merger agreement dated July 19, 2011 with Ecolab Inc. (NYSE: ECL). The approval came at a special meeting held today in Naperville, Ill. More than 99.9 percent of the votes cast and 74 percent of shares outstanding were voted in favor of the transaction. Ecolab shareholders also approved the merger agreement.

Closing will be completed upon receipt of final regulatory clearances and the fulfillment of other customary closing conditions. All regulatory clearances required to complete the merger have been received except with respect to China antitrust. We expect the merger to close prior to the end of 2011.

For questions or assistance with the election process, shareholders can call MacKenzie Partners, Nalco’s proxy solicitor, toll-free at 1-800-322-2885 or 212-929-5500 (collect).