MeadWestvaco

Richmond, Virginia, USA, 12 April 2007 – MeadWestvaco Corporation (NYSE: MWV) will release its results for the first quarter 2007 on 02 May 2007, before the market opens. The news release for first quarter earnings will be available on MeadWestvaco's Web site at www.meadwestvaco.com.

The company will broadcast its first quarter analyst conference call on 02 May at 10:00 a.m. Eastern Time (EDT) 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 Thompson, director, investor relations, will review the first 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 (800) 553-0351 (toll-free domestic) or +1 (612) 332-0923 (international); passcode: MeadWestvaco. Please call to register at least 10 minutes before the conference call begins. A replay of the call will be available for one month via telephone starting at 1:30 p.m. (EDT) on 02 May and can be accessed at 1 (800) 475-6701 (toll-free domestic) or +1 (320) 365-3844 (international); access code: 858439.

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. Please go to the Web site at least one hour before the call to register, download, and install any necessary audio software. The webcast will be available for replay starting at noon on02 May 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, home and garden, cosmetic, and healthcare industries. The company also has market-leading positions in its Consumer & Office Products, Specialty Chemicals, and Specialty Papers businesses. 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, visit www.meadwestvaco.com.