News Release - April 14, 2003

GreenFiber® INSULATED HOME WINS PRESTIGIOUS ENERGYVALUE HOUSING AWARD

CHARLOTTE, N.C. – April 14, 2003 – The National Association of Home Builders’ (NAHB) Research Center recently honored a GreenFiber-insulated home with its Gold Award for Hot Climate Production Home at the 2003 International Builders Show in Las Vegas, Nev. Recipients of this elite honor demonstrate a commitment to building and marketing energy-efficient homes within their communities. The winning home, built by Ryland Homes’ Central Texas Division, is located in San Antonio, Texas, and is insulated with R-20 Cocoon2™ in its walls and has utilized several other energy-efficient technologies in its construction.

GreenFiber, manufactured by GreenFiber, is a high-quality, paper fiber insulation designed to conserve energy and improve interior thermal comfort in residential and light commercial applications. The product’s density gives it a high R-value rating, and when applied, fills tiny cavities and surrounds obstructions where energy often escapes, reducing air infiltration and resulting drafts. In addition to insulating walls of new homes, GreenFiber can also be installed in attics, floors, ceilings and other enclosed spaces of both new construction and for use in retrofit applications.

“We’re thrilled, but not surprised, that this division of Ryland Homes won this prestigious award,” said Bruce Harned, vice president of sales and marketing for GreenFiber. “The home building industry is embracing the use of GreenFiber as a superior form of insulation and discovering its many features and benefits.”

Ryland Homes’ Central Texas Division was also awarded Builder of the Year, the Research Center’s highest honor, by demonstrating its commitment to customer satisfaction in the adoption of stringent energy efficiency standards and environmentally responsible construction. Under its HouseWorks program, Ryland offers a two-year guarantee that home heating and cooling will require less than 274 therms and 4,719 kWh per year – for an estimated average monthly cost of $54. GreenFiber Cocoon Insulation helps to assure that these homes meet Ryland’s guarantee, providing a valuable addition to the HouseWorks program.

The NAHB Research Center, located in Upper Marlboro, Md., is known as America’s housing technology and information resource. In its nearly 40 years of service to the home building industry, the Research Center has provided product research and building process improvements that have been widely adopted by home builders in the United States. Through testing and certification services, the Research Center seal is a nationally recognized mark of product quality and an assurance of product performance.

U.S. GreenFiber was formed in 2000 as a 50/50 joint venture between Louisiana-Pacific Corporation (NYSE: LPX) and Casella Waste Systems, Inc. (NASDAQ: CWST), and the merging of their respective companies, Greenstone and U.S. Fiber. In addition to its Charlotte, N.C. corporate headquarters and separate state-of-the-art research and development facility, U.S. GreenFiber operates manufacturing facilities in nine U.S. locations. Its product offering, GreenFiber Cocoon Insulation, is distributed nationwide through three primary channels: contractor, manufactured housing and retail.