MeadWestvaco

Stamford, Connecticut, USA, 06 July 2006 –- MeadWestvaco Corporation (NYSE: MWV) will release its results for the second quarter 2006 on 01 August 2006, before the market opens. The news release for second quarter results will be available on MeadWestvaco's Web site at www.meadwestvaco.com.

The company will broadcast its second quarter analyst conference call on 01 August at 11:00 a.m. (ET) with access available via Internet and telephone. The teleconference is expected to last about one hour. John A. Luke, Jr., chairman and chief executive officer; James A. Buzzard, president; E. Mark Rajkowski, chief financial officer; and Jason F. Thompson, director, Investor Relations, will review the second quarter results. Following the review, questions will be taken from registered analysts and investors.

Investors may participate in the live conference call by dialing 1 (888) 276-9995 (toll-free domestic) or 1 (612) 332-0634 (international); passcode: MeadWestvaco. Call to register at least 10 minutes before the conference call begins. A replay of the call will be available for one month via the telephone starting at 12:00 p.m. (ET) on 01 August and can be accessed at 1 (800) 475-6701 (toll-free domestic) or 1 (320) 365-3844 (international); access code: 806163.

The live conference call and presentation slides may be accessed on MeadWestvaco's Web site at www.meadwestvaco.com. After connecting to the home page, look for the link to Investor Information, then Financial Calendar, to access the webcast. Go to the Web site at least one hour before the call to register and download and install any necessary audio software. The webcast will be available for replay starting at noon on 01 August and will be archived for one month.

MeadWestvaco is a global packaging company that delivers high-value packaging solutions and products to the world's most recognized companies in the food and beverage, media and entertainment, personal care, cosmetic, and healthcare industries. MeadWestvaco, with operations in more than 29 countries, has been selected for the Dow Jones Sustainability Indexes, and manages all of its forestlands in accordance with internationally recognized forest certification standards. For more information, please visit www.meadwestvaco.com.