Clean Harbors Received Tenders for 69.2% of Notes Principal

Clean Harbors, Inc. (“Clean Harbors”)

announced today the completion of its previously announced tender offer and consent solicitation (collectively, the “Tender Offer”) to purchase any and all of its previously outstanding $490.0 million aggregate principal amount of 7 5/8% senior secured notes due 2016 (the “2016 Notes”). As previously announced, Clean Harbors received, 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 aggregate principal amount of $339.1 million of 2016 Notes, or 69.2% of the total outstanding, and Clean Harbors paid on July 30, 2012 to the holders of such tendered notes $1,041.38 per $1,000.00 in principal amount of 2016 Notes validly tendered (the “Total Consideration”), plus accrued but unpaid interest up to, but not including, the payment date. The Total Consideration included a consent payment of $30.00 per $1,000.00 in principal amount of 2016 Notes validly tendered (the “Consent Payment”). The consents received exceeded the amount 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”).