Casella Waste to Release Fourth Quarter Results on June 18

Date: June 11, 2007

Source: Casella Waste Systems, Inc.

Casella Waste Systems, Inc. to Host Conference Call On Its Fourth Quarter and Fiscal Year 2007

Casella Waste Systems, Inc. (Nasdaq: CWST), a regional, integrated solid waste services company, will host a conference call on Tuesday, June 19, 2007 to discuss its financial results for the company's fourth quarter and fiscal year 2007, which ended April 30, 2007.

The company will release its financial results after the close of the market on Monday, June 18, 2007.

The conference call will begin at 10:00 a.m. ET. Interested investors can participate by dialing (913) 312-6669 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 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 or 888-203-1112 (conference code #5445121), until 11:59 p.m. ET on Tuesday, June 26, 2007.

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

For more information, contact:
Ned Coletta
Director Investor Relations
Casella Waste Systems, Inc.
(802) 775-0325
www.casella.com.

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