Waste Industries USA to Release Second Quarter Earnings and Host Conference Call

Date: July 24, 2006

Source: Waste Industries USA, Inc.

Waste Industries USA, Inc. Schedules Second Quarter 2006 Financial Results Conference Call and Webcast on August 2, 2006

Waste Industries USA, Inc. (Nasdaq: WWIN) has scheduled its second quarter 2006 analyst conference call and webcast on Wednesday, August 2, 2006 at 2:00 p.m. Eastern time to discuss its second quarter financial results. These results are expected to be released after the close of the stock market on August 1, 2006.

You may access the conference call by dialing (800) 946-0742 and ask for the "Waste Industries Conference Call" with a confirmation number of 7498454. Please call approximately 5 - 10 minutes prior to the scheduled time. The call will also be broadcast live over the Internet at www.waste-ind.com under Investor Relations. A replay of the call will be available through August 16, 2006, and may be accessed by calling (888) 203-1112 and using confirmation number 7498454.

Waste Industries USA, Inc. is a vertically integrated regional solid waste services company that provides collection, transfer, disposal and recycling services to commercial, industrial and residential customer locations in the states of North Carolina, South Carolina, Virginia, Tennessee, Mississippi, and Georgia.

More information: www.waste-ind.com.

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