RUTLAND, VERMONT (June 14, 2006)—Casella Waste Systems, Inc. (Nasdaq: CWST), a regional, integrated solid waste services company, will host a conference call on Tuesday, June 20, 2006 to discuss its financial results for the company's fourth quarter and fiscal year 2006, which ended April 30, 2006.

The company will release its financial results after the close of the market on Monday, June 19, 2006.

The conference call will begin at 10:00 a.m. ET. Interested investors can participate by dialing (719) 457-2629 at least 10 minutes prior to the start of the conference call.

The call will also be webcast; to listen, participants should visit Casella Waste Systems' website at http://www.casella.com and follow the appropriate link to the webcast.

A replay of the call will be available on the company's website, or by calling 719-457-0820 (conference code #4579213), until 11:59 p.m. ET on Tuesday, June 27, 2006.

Casella Waste Systems, headquartered in Rutland, Vermont, provides collection, transfer, disposal and recycling services primarily in the northeastern United States.

Contact: Ned Coletta, director investor relations; (802) 775-0325.