Richmond, Virginia, USA, 15 May 2008 -— MeadWestvaco Corporation (NYSE: MWV) announced today that it will discontinue operations at its MWV Packaging plant in Warrington, Pennsylvania, in an effort to streamline costs and operational efficiencies. The facility produces visual and paperboard packaging for the personal and beauty care industry.

Some production at this facility will transfer to other MWV Packaging facilities, and the company’s capacity to supply these products will not be affected. Closure of the Warrington facility, expected by late summer 2008, will maximize the company’s operations and resources, enabling MWV to efficiently serve its customers in the personal and beauty care industry around the world.

“The decision to close our Warrington facility is based on careful analysis of our operations and the need to create a more efficient operation that will strengthen our presence in the personal and beauty care packaging market,” said Mark S. Cross, senior vice president of MWV Packaging.

The closure of the Warrington plant will affect approximately 145 employees, hourly and salaried. Affected salaried employees will be eligible for separation benefits in accordance with company policy. Separation benefits for hourly employees will be the subject of discussion with their union representative.

About MWV

MeadWestvaco Corporation (NYSE: MWV), provides packaging solutions to many of the world’s most-admired brands in the healthcare, personal and beauty care, food, beverage, media and entertainment, and home and garden industries. The company's businesses include Consumer & Office Products, Specialty Chemicals, and the Community Development and Land Management Group, which sustainably manages the company’s land holdings to support its operations, and to provide for conservation, recreation and development opportunities. With 24,000 employees worldwide, MWV operates in 30 countries and serves customers in more than 100 nations. MWV manages all of its forestlands in accordance with internationally recognized forest certification standards, and has been named to the Dow Jones Sustainability World Index for the fourth consecutive year. For more information, visit www.mwv.com.