Clean Harbors Received Tenders for 69.2% of Notes Principal

Clean Harbors, Inc. (“Clean Harbors”) (NYSE: CLH) announced today thecompletion of its previously announced tender offer and consent solicitation(collectively, the “Tender Offer”) to purchase any and all of its previouslyoutstanding $490.0 million aggregate principal amount of 7 5/8% senior securednotes due 2016 (the “2016 Notes”). As previously announced, Clean Harborsreceived, on or prior to 5:00 p.m., New York City time, on July 27, 2012 (the“Consent Date”), tenders and consents from the holders of an aggregateprincipal amount of $339.1 million of 2016 Notes, or 69.2% of the totaloutstanding, and Clean Harbors paid on July 30, 2012 to the holders of suchtendered notes $1,041.38 per $1,000.00 in principal amount of 2016 Notesvalidly tendered (the “Total Consideration”), plus accrued but unpaid interestup to, but not including, the payment date. The Total Consideration included aconsent payment of $30.00 per $1,000.00 in principal amount of 2016 Notesvalidly tendered (the “Consent Payment”). The consents received exceeded theamount needed to approve the proposed amendments described in Clean Harbors'Offer to Purchase and Consent Solicitation Statement dated July 16, 2012 (the“Offer to Purchase”) to the indenture under which the 2016 Notes were issued(the “Indenture”).