Clean Harbors Earnings Rise 45 Percent

Date: February 27, 2008

Source: Clean Harbors, Inc.

Clean Harbors Reports Strong Fourth-Quarter and Year-End 2007 Financial Results

Clean Harbors, Inc. ("Clean Harbors") (NASDAQ: CLHB), the leading provider of environmental and hazardous waste management services throughout North America, today announced financial results for the fourth quarter and year ended December 31, 2007.

For the fourth quarter of 2007, Clean Harbors reported an 11 percent increase in revenue to a record $257.7 million from $231.8 million in the fourth quarter of 2006. Income from operations rose 27 percent to $25.1 million from $19.8 million in the fourth quarter of 2006. Fourth quarter 2007 net income attributable to common shareholders increased 45 percent to $16.6 million, or $0.81 per diluted share, from $11.4 million, or $0.56 per diluted share, in the fourth quarter of 2006.

EBITDA (see description below) increased 20 percent to $37.6 million in the fourth quarter of 2007, from $31.4 million in the comparable period of 2006. The Company's fourth-quarter 2007 EBITDA includes a negative $2.9 million net change in estimated environmental liabilities.

Comments on the Fourth Quarter

"Clean Harbors concluded a successful 2007 with another record-breaking quarter, delivering double-digit growth in sales and EBITDA," said Alan S. McKim, Chairman and Chief Executive Officer. "Our results underscore the significant leverage within our network of disposal facilities. By combining steady sales growth with stringent cost management, we delivered a 20 percent growth in EDITDA on an 11 percent increase in revenue. Strong contributions from both Technical Services and Site Services helped fuel fourth-quarter revenue of nearly $258 million and EBITDA of $37.6 million."

"Our Technical Services business sustained its momentum as we achieved a favorable product mix and continued to win large scale projects that drive substantial volumes to our disposal facilities," McKim said. "Utilization rates at our incinerators remained high in the quarter, particularly in the U.S., where we achieved utilization of 95 percent. Our landfill business reflected the seasonally lower volumes typical in the fourth quarter of the year, and remained flat year-over-year."

"Within our Site Services segment, our growth was primarily driven by our core industrial cleaning and maintenance services, which is supported by our ongoing geographic expansion," McKim said. "In the fourth quarter, we opened a service center in Arizona bringing our total service center openings for 2007 to eight. We surpassed our initial goal of opening five to six service locations in 2007 and expanded our reach nationwide, entering previously under-penetrated markets in the Pacific Northwest and the Southwest. In addition to the growth in our core Site Services business, we also benefited from $4.5 million in emergency response and small scale project revenue, with the majority resulting from the clean-up associated with the Cosco Busan oil spill in the San Francisco Bay in November."

Full-Year 2007 Results

Revenues for the year ended December 31, 2007 increased 14 percent to $946.9 million, compared with $829.8 million for full-year 2006. Income from operations for full-year 2007 increased 15 percent to $85.3 million versus $74.4 million in the prior year. EBITDA (see description below) for 2007 increased 11 percent to $133.3 million from $119.9 million for 2006.

The Company generated net income attributable to common shareholders of $44.0 million, or $2.14 per diluted share, for the full-year 2007. This compares with 2006 net income attributable to common shareholders of $46.4 million, or $2.26 per diluted share.

The Company concluded 2007 with cash and marketable securities of $120.4 million, up from $83.8 million at December 31, 2006 and $103.1 million at September 30, 2007.

Non-GAAP Fourth-Quarter and Full-Year Results

Clean Harbors reports EBITDA results, which are non-GAAP financial measures, as a complement to results provided in accordance with accounting principles generally accepted in the United States (GAAP) and believes that such information provides additional useful information to investors since the Company's loan covenants are based upon levels of EBITDA achieved. The Company defines EBITDA in accordance with its outstanding credit agreement, as described in the following reconciliation showing the differences between reported net income and EBITDA for 2007 and 2006 (in thousands):


                                 For the three
                                  months ended:    For the year ended:
                                December December  December  December
                                   31,      31,       31,       31,
                                 2007     2006       2007      2006
                                -------  -------   --------  --------

Net income                      $16,569  $11,493   $ 44,198  $ 46,675
Accretion of environmental
 liabilities                      2,704    2,587     10,447    10,220
Depreciation and amortization     9,789    9,043     37,590    35,339
Loss on early extinguishment of
 debt                                --      239         --     8,529
Interest expense, net             3,256    3,144     13,157    12,447
Provision for income taxes        5,349    4,760     28,040     6,339
Other (income) expense              (73)     174       (135)      447
Equity interest in joint
 venture                             --      (50)        --       (61)
                                -------- --------  --------- ---------
EBITDA                          $37,594  $31,390   $133,297  $119,935
                                ======== ========  ========= =========

Extension of 10-K Filing Date

This is the first year for which the Company is classified as a "large accelerated filer" and is therefore required, subject to permitted extensions, to file its Annual Report on Form 10-K within 60, rather than 75, days after December 31. 2007. As permitted by SEC rules, the Company plans to file a notification with the SEC on Form 12b-25 that it will file its Annual Report on Form 10-K no later than March 14, 2008. All of the financial statement information contained in this press release are unaudited.

Acquisition of Solvent Recovery Facilities

The Company also announced that it signed on February 8, 2008, definitive agreements to acquire two solvent recycling facilities in Chicago, Illinois and Hebron, Ohio and the business associated with those facilities for $12.5 million in cash, plus the assumption of approximately $3 million of environmental liabilities, from Safety-Kleen Systems, Inc. The Company will also offer employment to all existing employees of these facilities.

These two solvent recovery facilities generated positive EBITDA and approximately $16 million in revenue during 2007. In conjunction with this transaction, Clean Harbors has formed two new entities within its organization - Clean Harbors Recycling Services of Ohio, LLC and Clean Harbors Recycling Services of Chicago, LLC. The closing of the acquisition is subject to certain conditions, including the receipt of certain governmental approvals. The Company anticipates receiving the governmental approvals and closing the acquisition by the end of March 2008.

"This acquisition will broaden Clean Harbors' service portfolio and establish a substantial presence for us in the solvent recycling market," said McKim. "We believe these two locations will be valuable additions to our extensive network of waste management facilities going forward. As the costs of solvents continue to rise, corporations are increasingly turning to recycling spent solvents for reuse. In acquiring these two recycling facilities and constructing our own solvent recovery plant at our El Dorado location, we are now better positioned to offer our customers a broad spectrum of choices for addressing their solvent waste streams. We currently expect the acquisition of the two facilities from Safety-Kleen to be accretive to earnings during 2008."

Business Outlook and Financial Guidance

"We are encouraged about our top- and bottom-line prospects for 2008," said McKim. "With significant momentum, favorable industrytrends and our established position as the leader in the environmental services sector, we expect that 2008 will be another record year for Clean Harbors. In 2008, we anticipate achieving our long-stated goal of becoming a $1 billion organization. Based on the operating leverage inherent in our network of disposal facilities, we believe we can grow our EBITDA at a significantly higher rate than our revenues in 2008."

The first quarter is traditionally the slowest quarter of the year for Clean Harbors due to the effect of weather on the Company's plants and customers' operations. For the first quarter of 2008, the Company expects revenue in the range of $225 million to $230 million. The Company expects to generate EBITDA for the first quarter of 2008 in the range of $27 million to $29 million.

For the full-year 2008, the Company expects to increase revenues in the range of 6 percent to 8 percent, and achieve EBITDA growth in the range of 17 percent to 20 percent.

Conference Call Information

Clean Harbors will conduct a conference call for investors to discuss the information contained in this press release today, Wednesday, February 27, 2008 at 9:00 a.m. (ET). Investors who want to hear a webcast of the call should log onto www.cleanharbors.com and select "Investor Relations." In addition, if you are unable to listen to the live webcast, the call will be archived on the investor section of the website.

Those who wish to listen to the fourth-quarter and year-end 2007 conference call webcast should visit the Investor Relations section of the Company's website at www.cleanharbors.com. The live call also can be accessed by dialing 877.795.3648 or 719.325.4820 (confirmation code: 4232606) prior to the start of the call. If you are unable to listen to the live call, the webcast will be archived on the Company's website.

About Clean Harbors, Inc.

Clean Harbors, Inc. is North America's leading provider of environmental and hazardous waste management services. With an unmatched infrastructure of 49 waste management facilities, including nine landfills, six incineration locations and six wastewater treatment centers, the Company provides essential services to over 45,000 customers, including more than 325 Fortune 500 companies, thousands of smaller private entities and numerous federal, state and local governmental agencies. Headquartered in Norwell, Massachusetts, Clean Harbors has more than 100 locations strategically positioned throughout North America in 36 U.S. states, six Canadian provinces, Mexico and Puerto Rico. For more information, visit www.cleanharbors.com.

Safe Harbor Statement

Any statements contained herein that are not historical facts are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, and involve risks and uncertainties. These forward-looking statements are generally identifiable by use of the words "believes," "expects," "intends," "anticipates," "plans to," "estimates," "projects," or similar expressions. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those reflected in these forward-looking statements. Readers are cautioned not to place undue reliance on these forward-looking statements, which reflect management's opinions only as of the date hereof. The Company undertakes no obligation to revise or publicly release the results of any revision to these forward-looking statements other than through its various filings with the Securities and Exchange Commission. Furthermore, all financial information in this press release is based on preliminary data and is subject to the final closing of the Company's books and records.

A variety of factors beyond the control of the Company may affect the Company's performance, including, but not limited to:

-- The Company's ability to manage the significant environmental liabilities that it assumed in connection with the CSD and other acquisitions;

-- The availability and costs of liability insurance and financial assurance required by governmental entities relating to our facilities;

-- The effects of general economic conditions in the United States, Canada and other territories and countries where the Company does business;

-- The effect of economic forces and competition in specific marketplaces where the Company competes;

-- The possible impact of new regulations or laws pertaining to all activities of the Company's operations;

-- The outcome of litigation or threatened litigation or regulatory actions;

-- The effect of commodity pricing on overall revenues and profitability;

-- Possible fluctuations in quarterly or annual results or adverse impacts on the Company's results caused by the adoption of new accounting standards or interpretations or regulatory rules and regulations;

-- The effect of weather conditions or other aspects of the forces of nature on field or facility operations;

-- The effects of industry trends in the environmental services and waste handling marketplace; and

-- The effects of conditions in the financial services industry on the availability of capital and financing.

Any of the above factors and numerous others not listed nor foreseen may adversely impact the Company's financial performance. Additional information on the potential factors that could affect the Company's actual results of operations is included in its filings with the Securities and Exchange Commission, which may be viewed on the Investor portal of the Company's Web Page at www.cleanharbors.com.


                     CLEAN HARBORS, INC. AND SUBSIDIARIES
                    CONSOLIDATED STATEMENTS OF OPERATIONS
                                  Unaudited
                   (in thousands except per share amounts)


                                         For the three months ended:
                                          December 31,  December 31,
                                              2007          2006
                                         -------------- ------------
 Revenues                                      $257,678     $231,849
 Cost of revenues                               178,547      165,907
 Selling, general and administrative
  expenses                                       41,537       34,552
 Accretion of environmental liabilities           2,704        2,587
 Depreciation and amortization                    9,789        9,043
                                         -------------- ------------
 Income from operations                          25,101       19,760
 Other income (expense)                              73        (174)
 Loss on early extinguishment of debt                --        (239)
 Interest expense, net                          (3,256)      (3,144)
                                         -------------- ------------
 Income before provision for income taxes
  and equity interest in joint venture
                                                 21,918       16,203
 Provision for income taxes                       5,349        4,760
 Equity interest in joint venture                    --         (50)
                                         -------------- ------------
 Net income                                      16,569       11,493
 Dividends on Series B Preferred Stock               --           69
                                         -------------- ------------
 Net income attributable to common
  shareholders                                  $16,569      $11,424
                                         ============== ============

 Earnings per share:
      Basic earnings attributable to
       common shareholders                        $0.83        $0.58
                                         ============== ============
      Diluted earnings attributable to
       common shareholders                        $0.81        $0.56
                                         ============== ============

 Weighted average common shares
  outstanding                                    19,946       19,634
                                         ============== ============
 Weighted average common shares
  outstanding plus potentially dilutive
  common shares
                                                 20,582       20,637
                                         ============== ============


                                                    Year ended:
                                             December 31, December 31,
                                                 2007         2006
                                             ------------ ------------
 Revenues                                        $946,917     $829,809
 Cost of revenues                                 664,440      584,835
 Selling, general and administrative expenses     149,180      125,039
 Accretion of environmental liabilities            10,447       10,220
 Depreciation and amortization                     37,590       35,339
                                             ------------ ------------
 Income from operations                            85,260       74,376
 Other income (expense)                               135        (447)
 Loss on early extinguishment of debt                  --      (8,529)
 Interest expense, net                           (13,157)     (12,447)
                                             ------------ ------------
 Income before provision for income taxes and
  equity interest in joint venture
                                                   72,238       52,953
 Provision for income taxes                        28,040        6,339
 Equity interest in joint venture                      --         (61)
                                             ------------ ------------
 Net income                                        44,198       46,675
 Dividends on Series B Preferred Stock                206          276
                                             ------------ ------------
 Net income attributable to common
  shareholders                                    $43,992      $46,399
                                             ============ ============

 Earnings per share:
      Basic earnings attributable to common
       shareholders                                 $2.22        $2.38
                                             ============ ============
      Diluted earnings attributable to common
       shareholders                                 $2.14        $2.26
                                             ============ ============

 Weighted average common shares outstanding        19,827       19,526
                                             ============ ============
 Weighted average common shares outstanding
  plus potentially dilutive common shares
                                                   20,630       20,657
                                             ============ ============



                 CLEAN HARBORS, INC. AND SUBSIDIARIES
           UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS
                                ASSETS
                            (in thousands)

                                                     December December
                                                        31,      31,
                                                       2007     2006
                                                     -------- --------
 Current assets:
      Cash and cash equivalents                      $119,538 $ 73,550
      Marketable securities                               850   10,240
      Accounts receivable, net                        193,126  169,581
      Unbilled accounts receivable                     14,703   16,078
      Deferred costs                                    7,359    7,140
      Prepaid expenses and other current assets        10,098    9,451
      Supplies inventories                             22,363   20,101
      Deferred tax assets                              11,491    9,238
      Properties held for sale                            910    7,440
                                                     -------- --------
         Total current assets                         380,438  322,819
                                                     -------- --------

 Property, plant and equipment, net                   262,601  244,126
                                                     -------- --------

 Other assets:
Long term investments                                   8,500        -
      Deferred financing costs                          5,881    7,206
      Goodwill                                         21,572   19,032
      Permits and other intangibles, net               74,809   65,743
      Investment in joint venture                          --    2,208
      Deferred tax assets                              12,176    6,388
      Other                                             3,911    3,286
                                                     -------- --------
                                                      126,849  103,863
                                                     -------- --------
         Total assets                                $769,888 $670,808
                                                     ======== ========



                 CLEAN HARBORS, INC. AND SUBSIDIARIES
           UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS
                 LIABILITIES AND STOCKHOLDERS'EQUITY
                            (in thousands)

                                                     December December
                                                        31,      31,
                                                       2007     2006
                                                     -------- --------
 Current liabilities:
      Uncashed checks                                $  5,489 $ 11,083
      Current portion of capital lease obligations      1,251    1,391
      Accounts payable                                 81,309   81,432
      Deferred revenue                                 29,730   29,409
      Other accrued expenses                           65,789   56,999
      Current portion of closure, post-closure and
       remedial liabilities                            18,858   13,707
      Income taxes payable                              8,427    4,333
                                                     -------- --------
              Total current liabilities               210,853  198,354
                                                     -------- --------
 Other liabilities:
      Closure and post-closure liabilities, less
       current portion                                 24,202   23,520
      Remedial liabilities, less current portion      141,428  136,173
      Long-term obligations, less current maturities  120,712  120,522
      Capital lease obligations, less current portion   1,520    2,648
      Tax contingencies and other long-term
       liabilities                                     68,276   16,405
                                                     -------- --------
              Total other liabilities                 356,138  299,268
                                                     -------- --------
              Total stockholders' equity, net         202,897  173,186
                                                     -------- --------
              Total liabilities and stockholders'
               equity                                $769,888 $670,808
                                                     ======== ========


For more information, contact:
James M. Rutledge
Executive Vice President and Chief Financial Officer
Clean Harbors, Inc.
781-792-5100
InvestorRelations@cleanharbors.com.
or

Bill Geary
Executive Vice President and General Counsel
781-792-5130
or

Jim Buckley
Executive Vice President
Sharon Merrill Associates, Inc.
617-542-5300
clhb@investorrelations.com.

Sign up to receive our free Weekly News Bulletin