WALNUT CREEK, California, February 8, 2010 -- Nalco Mobotec, the global leader in air protection technology, announced today it had signed a contract with PPL Corporation to provide mercury emission control at a coal-fired power plant near Colstrip, Montana. PPL is operator and part owner of the Colstrip power plant.

The agreement, which took effect on Jan. 1, provides PPL with one of Nalco Mobotec's patented MerControl® additives. This solution will help PPL conform to the State of Montana's new mercury emissions regulations. The agreement with PPL runs for five years and is valued at more than $3 million.

"Our MerControl family of solutions provides the power industry with comprehensive mercury control," said Dave Flitman, Nalco Senior Executive Vice President and President of Water Services. "PPL will benefit from one portion of our end-to-end solution, which includes mercury removal at pre-combustion and coal treatment through the firing process, flue gas capture and re-emission control and finally removal from wastewater to the very low parts per trillion level. All these solutions can be customized to meet site-specific needs."

About Nalco Mobotec

Nalco Mobotec is a global leader in analysis, technology and total solutions for coal-fired power plants and industrial facilities around the world who are seeking to reduce their emissions without sacrificing combustion efficiency and plant up-time. Nalco Mobotec's full array of NOx, SOx, mercury, biomass, combustion efficiency and air protection technologies provide industrial customers with solutions they can trust that deliver results. For more information visit www.nalcomobotec.com. Nalco Mobotec is a subsidiary of Nalco Holding Company (NYSE:NLC - News) the global leader in water, energy, air and process technologies and services that deliver savings for customers and improve the environment.