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SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
------------------------

Form 10-Q

Quarterly Report Pursuant to Section 13 or 15(d)
of The Securities Exchange Act of 1934
for the Quarterly Period Ended
June 30, 1998
-----------------------

Commission File Number 0-16379

Clean Harbors, Inc.
(Exact name of registrant as specified in its charter)

Massachusetts                                04-2997780
(State of Incorporation)                 (IRS Employer Identification No.)

1501 Washington Street, Braintree, MA             02185-0327
(Address of Principal Executive Offices)          (Zip Code)

(781) 849-1800 ext. 4454
(Registrant's Telephone Number, Including Area Code)

Indicate by check mark whether the registrant (1) has filed all reports 
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 
1934 during the preceding 12 months (or for such shorter period that the 
registrant was required to file such reports), and (2) has been subject to 
such filing requirements for the past 90 days.       Yes     X        No  
--------        ------

Indicate the number of shares outstanding of each of the issuer's classes of 
common stock, as of the latest practicable date.

Common Stock, $.01 par value                            10,353,644         
- -------------------------------------         -------------------------------- 
(Class)                              (Outstanding at August 7, 1998)

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CLEAN HARBORS, INC. AND SUBSIDIARIES

TABLE OF CONTENTS

PART I:   FINANCIAL INFORMATION

ITEM 1:   FINANCIAL STATEMENTS                                   Pages
------

Consolidated Statements of Operations                              1

Consolidated Statements of Comprehensive Income (Loss)             2

Consolidated Balance Sheets                                        3-4

Consolidated Statements of Cash Flows                              5-6

Consolidated Statement of Stockholders' Equity                     7

Notes to Consolidated Financial Statements                         8-12

ITEM 2:   MANAGEMENT'S DISCUSSION AND ANALYSIS OF 
FINANCIAL CONDITION AND RESULTS OF 
OPERATIONS                                              13-20

PART II:   OTHER INFORMATION

Items No. 1 through 6                                             21-22

Signatures                                                        23   

CLEAN HARBORS, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS
Unaudited
(in thousands except for earnings per share amounts)

Three Months Ended        Six Months Ended
June 30,                 June 30,
-------------------       ------------------
1998        1997          1998       1997
-------     -------       -------    -------

Revenues                              $53,591     $47,363       $93,967    $87,737

Cost of revenues                       38,975      34,885        70,319     66,373

Selling, general and administrative     
expenses                               9,180       8,631        17,077     16,830

Depreciation and amortization           2,252       2,346         4,536      4,709
-------     -------       -------    -------
Income (loss) from operations           3,184       1,501         2,035       (175)  

Other income, net                         --          --            --         800

Interest expense, net                   2,318       2,314         4,658      4,573
-------     -------       -------    -------

Income (loss) before provision for 
income taxes                             866        (813)       (2,623)    (3,948)

Provision for (benefit from) income 
taxes                                     90          70           180     (1,082)
-------     -------       -------    -------

Net income (loss)                    $   776     $  (883)      $(2,803)   $(2,866)
-------     -------       -------    -------
-------     -------       -------    -------
Basic and fully diluted income (loss)
per share                            $   .06     $  (.10)      $  (.30)   $  (.31)
-------     -------       -------    -------
-------     -------       -------    -------
Weighted average common
shares outstanding                    10,274       9,911       10,229      9,866
-------     -------       -------    -------
-------     -------       -------    -------
Weighted average common 
shares plus potentially dilutive 
common shares                         10,385       9,911        10,229      9,866
-------     -------       -------    -------
-------     -------       -------    -------

The accompanying notes are an integral part of these consolidated financial
statements.

1

CLEAN HARBORS, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE 
INCOME (LOSS)
Unaudited
(in thousands)

Three Months Ended        Six Months Ended
June 30,                 June 30,
-------------------       ------------------
1998        1997          1998       1997
-------     -------       -------    -------

Net income (loss)                     $   776     $  (883)      $(2,803)   $(2,866)

Other comprehensive income, net 
of tax:
Unrealized gains (losses) on 
securities:
Unrealized holding gains (losses)
arising during period                  (19)         31             2        (11)  

Reclassification adjustment
for gains  included in net loss          23          14             4         16 
-------     -------       -------    -------
Comprehensive income (loss)            $  780     $  (838)      $(2,797)   $(2,861)  
-------     -------       -------    -------
-------     -------       -------    -------

The accompanying notes are an integral part of these consolidated financial
statements.

2

CLEAN HARBORS, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS
(in thousands)

June 30,        December 31,
1998               1997
-----------       ------------
(Unaudited)

ASSETS
Current assets:                            
Cash and cash equivalents                       $   5,115          $  3,935
Restricted investments                             1,747             1,088
Accounts receivable, net of
allowance for doubtful accounts                  46,273            37,836
Prepaid expenses                                   1,756             1,518
Supplies inventories                               3,135             2,811
Income tax receivable                              1,237             1,669
Deferred tax asset                                 1,581             1,581
----------         ---------
Total current assets                             60,844            50,438
----------         ---------
Property, plant and equipment:        
Land                                                8,182             8,182
Buildings and improvements                         38,040            37,890
Vehicles and equipment                             78,145            77,281
Furniture and fixtures                              2,190             2,190
Construction in progress                            4,543             2,756
----------         ---------
131,100           128,299
Less - Accumulated depreciation
and amortization                                    70,111            66,392
----------         ---------
Net property, plant and equipment                   60,989            61,907
----------         ---------
Other assets:
Goodwill, net                                       20,393            20,755
Permits, net                                        11,240            11,695
Deferred taxes non-current                           5,627             5,627
Other                                                4,491             4,523
----------         ---------
Total other assets                                 41,751            42,600
----------         ---------
Total assets                                       $163,584          $154,945
----------         ---------
----------         ---------

The accompanying notes are an integral part of these consolidated financial 
statements.

3

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

June 30,        December 31,
1998               1997
-----------       ------------
(Unaudited)

LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Current maturities of long-term
obligations                                      $  4,034           $   4,037
Accounts payable                                    19,110              13,760
Accrued disposal costs                               6,508               7,100
Other accrued expenses                              14,549              13,548
Income tax payable                                      46                  10
Deferred tax liability                                 224                 224
-----------       ------------
Total current liabilities                          44,471              38,679
-----------       ------------
Long-term obligations, less current maturities        73,828              68,020
Deferred taxes, long-term                              6,871               6,871
Other                                                  1,122               1,351
-----------       ------------
Total other liabilities                            81,821              76,242
-----------       ------------
Commitments and contingencies (Note 4)
Stockholders' equity:
Preferred Stock, $.01 par value:
Series A  Convertible;
Authorized-2,000,000 shares; Issued and
outstanding - none                                 --                 --
Series B Convertible;
Authorized-156,416 shares; Issued and
outstanding 112,000 (liquidation
preference of $5,600,000)                           1                 1
Common Stock, $.01 par value
Authorized-20,000,000 shares;
Issued and outstanding-10,277,487 and
10,101,490 shares, respectively                     102               101
Additional paid-in capital                          60,375            60,087
Accumulated other comprehensive loss                    (6)              (12)
Accumulated deficit                                (23,180)          (20,153)
-----------       ------------
Total stockholders' equity                       37,292            40,024
-----------       ------------
Total liabilities and stockholders' equity         $ 163,584         $ 154,945
-----------       ------------
-----------       ------------

The accompanying notes are an integral part of these consolidated 
financial statements.

4

CLEAN HARBORS, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS
Unaudited
(in thousands)

SIX MONTHS ENDED
JUNE 30,
---------------------
1998         1997
---------    --------

CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss                                                   $(2,803)     $(2,866)

Adjustments to reconcile net loss to net cash
provided by (used) in operating activities:
Depreciation and amortization                              4,536        4,709
Deferred income taxes                                        --        (1,808)
Allowance for doubtful accounts                              342          330
Amortization of deferred financing costs                     317          357
Gain on sale of fixed assets                                 --            79
Changes in assets and liabilities:
Accounts receivable                                       (8,779)       2,268
Refundable income taxes                                      432         (102)
Prepaid expenses                                            (238)         (20)
Supplies inventories                                        (324)         (33)    
Deferred tax asset                                           --           640
Other assets                                                  32         (213)
Accounts payable                                           5,350       (5,594)
Accrued disposal costs                                      (592)        (514)
Other accrued expenses                                     1,001       (1,752)
Taxes payable                                                 36         (162)
Other liabilities                                           (229)         286
--------    --------   
Net cash used in operating activities                         (919)      (4,395)
--------    --------
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property, plant and equipment                 (2,801)     (1,735)
Proceeds from sale and maturities of
restricted investments                                        64       7,307
Purchase of restricted investments                            (717)        --      
Proceeds from sale of fixed assets                             --        1,482     
--------    --------
Net cash provided by (used) in investing
activities                                                ($3,454)     $7,054     
--------    --------    

The accompanying notes are an integral part of these consolidated financial
statements.

5

CLEAN HARBORS, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (continued)
Unaudited
(in thousands)

SIX MONTHS ENDED
JUNE 30,
-------------------
1998       1997
---------  --------

CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings (payments) under 
long-term revolver                                  $ 7,005   $   (594)
Payments on long-term obligations                     (1,503)    (2,801)
Additions to deferred financing cost                     (14)        (9)
Proceeds from employee stock purchase plan                65         80
---------  --------
Net cash provided by (used) in financing activities    5,553     (3,324)
---------  --------
INCREASE (DECREASE) IN CASH AND CASH 
EQUIVALENTS                                             1,180       (665)
Cash and cash equivalents, beginning of year           3,935      1,366
---------  --------
Cash and cash equivalents, end of period             $ 5,115   $    701
---------  --------
---------  --------
Supplemental information:
Non cash investing and financing activities:
Stock dividend on preferred stock                 $   224   $    224

The accompanying notes are an integral part of these consolidated financial
statements.

6

CLEAN HARBORS, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY
Unaudited
(in thousands)

SERIES B
PREFERRED STOCK          COMMON STOCK
---------------------   ---------------------   ADDITIONAL
NUMBER OF   $0.01 PAR   NUMBER OF   $0.01 PAR    PAID-IN     COMPREHENSIVE
SHARES       VALUE      SHARES       VALUE      CAPITAL     INCOME (LOSS)
---------   ---------   ---------   ---------   ----------   -------------

Balance at December 31, 1997                           112        $   1      10,101       $ 101      $60,087             --
Comprehensive loss
Net loss                                              --           --          --          --           --        $(2,803)
Other comprehensive income, net of tax
Unrealized gains on securities, net of
reclassification adjustment (see disclosure)      --           --          --          --           --              6
-------------
Comprehensive income                                    --           --          --          --           --        $(2,797)
-------------
-------------
Preferred stock dividends:
Series B                                              --           --         129           1          223             --
Employee stock purchase plan                            --           --          47          --           65             --
---      ---------   ---------   ---------   ----------
Balance at June 30, 1998                               112        $   1      10,277       $ 102      $60,375             --
---      ---------   ---------   ---------   ----------
---      ---------   ---------   ---------   ----------
Disclosure of reclassification amount:
Unrealized holding gains arising in the period                                                                    $     2
Reclassification adjustment for gains included
in net loss                                                                                                           4
-------------
Net unrealized gains on securities                                                                                  $     6
-------------
-------------

ACCUMULATED
OTHER                         TOTAL
COMPREHENSIVE   ACCUMULATED   STOCKHOLDERS'
INCOME (LOSS)     DEFICIT        EQUITY
-------------   -----------   -------------

Balance at December 31, 1997                            $(12)        $(20,153)      $ 40,024
Comprehensive loss
Net loss                                                --           (2,803)        (2,803)
Other comprehensive income, net of tax
Unrealized gains on securities, net of
reclassification adjustment (see disclosure)         6               --              6
Comprehensive income                                      --               --             --
Preferred stock dividends:
Series B                                                --             (224)            --
Employee stock purchase plan                              --               --             65
---        -----------   -------------
Balance at June 30, 1998                                $ (6)        $(23,180)      $ 37,292
---        -----------   -------------
---        -----------   -------------
Disclosure of reclassification amount:
Unrealized holding gains arising in the period
Reclassification adjustment for gains included
in net loss
Net unrealized gains on securities

The accompanying notes are an integral part of these consolidated financial
statements.

7

CLEAN HARBORS, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)

NOTE 1 Basis of Presentation

The consolidated interim financial statements included herein have been 
prepared by the Company, pursuant to the rules and regulations of the 
Securities and Exchange Commission, and include, in the opinion of management, 
all adjustments (consisting of only normal recurring accruals) necessary for 
the fair presentation of interim period results.  The operating results for 
the three months and six months ended June 30, 1998 are not necessarily 
indicative of those to be expected for the full fiscal year. Reference is made 
to the audited consolidated financial statements and notes thereto included in 
the Company's Report on Form 10-K for the year ended December 31, 1997 as 
filed with the Securities and Exchange Commission.

NOTE 2 Significant Accounting Policies

Earnings Per Share

In 1997 the Company implemented Statement of Financial Accounting 
Standards No. 128, "Earnings per Share" ("SFAS 128").  Under SFAS 128, basic 
EPS is calculated by dividing income available to common shareholders by the 
weighted-average number of common shares outstanding during the period.  
Diluted EPS gives effect to all potential dilutive common shares that were 
outstanding during the period.  The earnings per share for the Company under 
SFAS 128 were the same as under the prior accounting standard for the periods 
presented in the financial statements.

Comprehensive Income

In June 1997, the FASB issued SFAS No. 130, "Reporting Comprehensive 
Income." This statement requires that changes in comprehensive income be shown 
in a financial statement that is displayed with the same prominence as other 
financial statements. The statement is effective for fiscal periods beginning 
after December 15, 1997, and the Company adopted its provisions for the 
quarter ended March 31, 1998. Reclassification of earlier periods is required 
for comparative purposes.  Management determined that the statement had no 
material impact on its financial position or results of operations.

NOTE 3 Financing Arrangements

As amended, the Company has a $35,000,000 Loan Agreement with a financial 
institution.  The Loan Agreement provided for a $24,500,00 revolving credit 
portion (the "Revolver") and a $10,500,000 term promissory note.  The Revolver 
allows the Company to borrow cash and letters of credit based on a formula of 
eligible accounts receivable.  At June 30, 1998, the Revolver balance was 
$12,563,000, letters of credit outstanding were $5,852,000 and funds available 
to borrow were approximately $4,765,000.  In June 1998, the term of the 
Revolver was extended from May 8, 1999 to May 8, 2000 under substantially the 
same terms and conditions.

8

CLEAN HARBORS, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)

NOTE 4 Income Taxes

SFAS 109, "Accounting for Income Taxes," requires that a valuation 
allowance be established when, based on an evaluation of objective verifiable 
evidence, there is a likelihood that some portion or all of the deferred tax 
assets will not be realized. The Company continually reviews the adequacy of 
the valuation allowance for deferred tax assets, and, in 1997, based upon this 
review, the valuation allowance was increased to reduce the carrying value of 
deferred tax assets to the amount that is likely to be realized.  Accordingly, 
no tax benefit has been recorded in the quarter and six months ended June 30, 
1998, while a tax benefit for the loss in the six months ended June 30, 1997 was
recorded. The actual realization of the net operating loss carryforwards and 
other tax assets depend on having future taxable income of the appropriate 
character prior to their expiration.

During the ordinary course of its business, the Company is audited by 
federal and state tax authorities which may result in proposed assessments.  
The Company has received a notice of intent to assess state income taxes from 
one of the states in which it operates.  The case is currently undergoing 
administrative appeal.  If the Company loses the administrative appeal, the 
Company may be required to make a payment of approximately $3,000,000 to the 
state.  The Company believes that it has properly reported its state income 
and intends to contest the assessment vigorously. While the Company believes 
that the final outcome of the dispute will not have a material adverse effect 
on the Company's financial condition or results of operations, no assurance 
can be given as to the final outcome of the dispute, the amount of any final 
adjustments or the potential impact of such adjustments on the Company's 
financial condition or results of operations.

9

CLEAN HARBORS, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)

NOTE 5 Earnings Per Share

The following is a reconciliation of basic and diluted loss per share
computations (in thousands except for per share amounts):

THREE MONTHS ENDED JUNE 30, 1998
---------------------------------------
INCOME         SHARES       PER-SHARE
(NUMERATOR)   (DENOMINATOR)     LOSS
-----------   -------------   ---------

Net income                                                                                $766
Less preferred dividend                                                                    112
-----          ------          ---
Basic and diluted EPS (income available to shareholders)                                   654          10,274          .06
Effect of dilutive securities
Options                                                                                   --             111           --
-----          ------          ---
Diluted EPS
Income available to common stockholders plus assumed conversions                          $654          10,385         $.06
-----          ------          ---
-----          ------          ---

THREE MONTHS ENDED JUNE 30, 1997
---------------------------------------
INCOME         SHARES       PER-SHARE
(NUMERATOR)   (DENOMINATOR)     LOSS
-----------   -------------   ---------

Net loss                                                                                  $(883)
Less preferred dividends                                                                    112
-----         ------       ---------
Basic and diluted EPS (loss available to shareholders)                                    $(995)         9,911         $(.10)
-----         ------       ---------
-----         ------       ---------

10

CLEAN HARBORS, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)

NOTE 5       Earnings Per Share (continued)

SIX MONTHS ENDED JUNE 30, 1998
---------------------------------------
INCOME         SHARES       PER-SHARE
(NUMERATOR)   (DENOMINATOR)     LOSS
-----------   -------------   ---------

Net loss                                                                                 ($2,803)
Less preferred dividends                                                                     224
-----------      ------       ---------
Basic and diluted EPS (loss available to shareholders)                                   ($3,027)       10,229         $(.30)
-----------      ------       ---------
-----------      ------       ---------

THREE MONTHS ENDED JUNE 30, 1998
---------------------------------------
INCOME         SHARES       PER-SHARE
(NUMERATOR)   (DENOMINATOR)     LOSS
-----------   -------------   ---------

Net loss                                                                                 ($2,866)
Less preferred dividends                                                                     224
-----------      ------       ---------
Basic and diluted EPS (loss available to shareholders)                                   ($3,090)        9,866         $(.31)
-----------      ------       ---------
-----------      ------       ---------

The Company has issued options, warrants and convertible preferred stock 
which are potentially dilutive to earnings. For the three months ended 
June 30, 1998, some of the options outstanding but none of the warrants or 
convertible preferred stock are dilutive to earnings. Only those options where 
the options' exercise price was less than the average market price of the 
common shares are included in the above calculation for this period. For the 
other periods presented, the options, warrants and convertible stock 
outstanding have not been included in the above calculations, since their 
inclusion would have been antidilutive for the periods.

11

CLEAN HARBORS, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)

NOTE 6       Other Income

During the first quarter of 1997, the Company recorded a $950,000 
receivable in connection with the settlement of a lawsuit and incurred 
approximately $150,000 in costs related to the litigation during the first 
quarter.  The Company recognized a pre-tax gain, net of related legal fees, of 
$800,000 resulting from the settlement, which is included in other income, 
net, in the consolidated statement of income. The $950,000 was received April, 
1997.

12

CLEAN HARBORS, INC. AND SUBSIDIARIES

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS

RESULTS OF OPERATIONS

The following table sets forth for the periods indicated certain
operating data associated with the Company's results of operations.        

PERCENTAGE OF TOTAL REVENUES
------------------------------
THREE MONTHS     SIX MONTHS
ENDED           ENDED
JUNE 30,        JUNE 30,
--------------  --------------
1998    1997    1998    1997
------  ------  ------  ------

Revenues                                                            100.0%  100.0%  100.0%  100.0%
Cost of revenues:
Disposal costs paid to third parties                               14.8    13.3    14.0    13.1
Other costs                                                        57.9    60.4    60.8    62.5
------  ------  ------  ------
Total cost of revenues                                             72.7    73.7    74.8    75.6
Selling, general and administrative expenses                         17.2    18.2    18.2    19.2
Depreciation and amortization of intangible assets                    4.2     5.0     4.8     5.4
------  ------  ------  ------
Income (loss) from operations                                         5.9%    3.1%    2.2%  (0.2)%
------  ------  ------  ------
------  ------  ------  ------
Other Data:
Earnings before interest, taxes, depreciation and amortization
(EBITDA) (in thousands)                                          $5,436  $3,847  $6,571   5,334

REVENUES

Revenues for the quarter ended June 30, 1998 were $53,591,000 
compared to revenues of $47,363,000 for the quarter ended June 30, 1997, an 
increase of $6,228,000 or 13.1%. Revenues increased by 14.0% due to higher 
volumes of waste processed and field service hours worked in the quarter ended 
June 30, 1998 as compared to the same quarter of the prior year. This increase 
in revenues due to volume was partially offset by a 6.5% decrease in revenues 
due to pricing.

13

CLEAN HARBORS, INC. AND SUBSIDIARIES

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS

REVENUES (continued)

Revenues for the six months ended June 30, 1998 were $93,967,000 compared 
to revenues of $87,737,000 for the six months ended June 30, 1997, an increase 
of $6,230,000 or 7.1%. Revenues increased by 15.0% due to higher volumes of 
waste processed, field service hours worked and remediation projects performed 
in the six months ended June 30, 1998 as compared to the same period of the 
prior year. These increases in revenues were partially offset by a 7.7% 
decrease in revenues due to pricing. 

Revenues for the quarter and six months ended June 30, 1998 when compared 
to the same periods of the prior year continued to be adversely impacted by 
declining sales prices due to industry-wide pricing pressures. However, sales 
prices have remained steady for the Company since the quarter ended 
December 31, 1997. Management can not predict if this recent stability in 
pricing will continue. 

There were no major spills or other events that significantly impacted 
revenues for the periods presented.

There are many factors which have impacted, and continue to impact, the 
Company's revenues.  These factors include: competitive industry pricing; 
continued efforts by generators of hazardous waste to reduce the amount of 
hazardous waste they produce; significant consolidation among treatment and 
disposal companies; industry-wide over capacity; and direct shipment by 
generators of waste to the ultimate treatment or disposal location.

COST OF REVENUES

Cost of revenues were $38,975,000 for the quarter ended June 30, 1998 
compared to $34,885,000 for the quarter ended June 30, 1997, an increase of 
$4,090,000. One of the largest components of cost of revenues is the cost of 
sending waste to other companies for disposal. As a percentage of revenues, 
disposal costs paid to third parties increased from 13.3% for the quarter 
ended June 30, 1997 to 14.8% for the quarter ended June 30, 1998. This 
increase in disposal expense is due to a 20.0% increase in the volume of 
wastes processed through the Company's plants and an increase in wastes sent 
directly to outside disposal vendors from customer sites, which were partly 
offset by reductions achieved in the unit cost of disposing of waste. 

14

CLEAN HARBORS, INC. AND SUBSIDIARIES

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS

COST OF REVENUES (continued)

Cost of revenues were $70,319,000 for the six months ended June 30, 1998 
compared to $66,373,000 for the six months ended June 30, 1997, an increase 
of $3,946,000. As a percentage of revenues, disposal costs paid to third 
parties increased from 13.1% for the six months ended June 30, 1997 to 14.0% 
for the six months ended June 30, 1998. This increase in disposal expense is 
similarly due to a 20.7% increase in the volume of wastes processed through 
the Company's plants and an increase in wastes sent directly to outside 
disposal vendors from customers' sites, which were partly offset by 
reductions achieved in the unit cost of disposing of waste and the 
internalization of waste.  

Other costs decreased to 57.9% of revenue for the quarter ended June 30 
1998, as compared to 60.4% for the same period of the prior year, and they 
decreased to 60.8% for the six months ended June 30, 1998, as compared to 
62.5% for the same period of the prior year. These decreases were achieved 
even while the volume of waste processed through the Company's plants 
increased due to improvements in efficiencies in the plants and cost 
reductions. 

The Company believes that its ability to manage operating costs is an 
important factor in its ability to remain price competitive.  During the first 
half of 1998, the Company continued its process of consolidating common 
functions to reduce redundant costs and improve the Company's ability to 
deliver its services.  No assurance can be given that the Company's efforts to 
manage future operating expenses will be successful.

SELLING, GENERAL AND ADMINISTRATIVE EXPENSES

Selling, general and administrative expenses increased 6.4% to 
$9,180,000 for the three months ended June 30, 1998 as compared to $8,631,000 
for the same period of 1997.  Selling, general and administrative expenses 
increased 1.5% to $17,077,000 for the six months ended June 30, 1998 as 
compared to $16,830,000 for the same period of 1997.  Compensation expense 
for the periods was flat.  Savings realized from reductions in administrative 
staff were offset by increased headcount in the sales staff and merit 
increases.  The Company does not anticipate any significant increases in 
selling, general and administrative expenses for the last half of 1998 as 
compared to the first half.

15 

CLEAN HARBORS, INC. AND SUBSIDIARIES

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS

INTEREST EXPENSE, NET

Interest expense, net of $2,318,000 for the quarter ended June 30, 1998 
was flat as compared to $2,314,000 for same quarter of the prior year. 
Interest expense, net was $4,658,000 for the first six months of 1998 as 
compared to $4,573,000 for the same period of the prior year. The increase in 
interest expense, net for the first six months of 1998 when compared to the 
same period of 1997 is primarily due to a decrease in interest income 
associated with a reduction in the average balance of restricted cash.

INCOME TAXES

For the quarter ended June 30, 1998, income tax expense of $90,000 was 
recorded on a pre-tax profit of $866,000 for an effective tax rate of 10.4%, 
as compared to income tax expense  of $70,000 that was recorded on a pre-tax 
loss of $813,000 for an effective tax rate of  (8.6)%. For the quarter ended 
June 30, 1997, the rate fluctuated significantly due to the amount of income 
before taxes, as compared to the fixed amount of goodwill amortization, other 
non-deductible items and changes in estimates.

For the six months ended June 30, 1998, income tax expense of $180,000 
was recorded on a pre-tax loss of $2,623,000 for an effective tax rate of 
(6.9%), as compared to a tax benefit of $1,082,000 that was recorded on a 
pre-tax loss of $3,948,000 for an effective tax rate of 27.4%.   SFAS 109, 
"Accounting for Income Taxes," requires that a valuation allowance be 
established when, based on an evaluation of objective verifiable evidence, 
there is a likelihood that some portion or all of the deferred tax assets 
will not be realized.  The Company continually reviews the adequacy of its 
valuation allowance for deferred tax assets, and, in the fourth quarter of 
1997, based on this review, the valuation allowance was increased to cover 
almost all of the net deferred tax assets.  Accordingly, the Company recorded 
no benefit on its books for the future potential value of net operating loss 
carryforwards generated during the six months ended June 30, 1998, while 
these tax benefits were recorded for the net operating loss carryforwards 
generated during the same period of the prior year.

The actual realization of the net operating loss carryforwards and 
other tax assets depend on having future taxable income of the appropriate 
character prior to their expiration under the tax laws.  If the Company 
reports taxable earnings in the future, and depending on the level of these 
earnings, some portion or all of the valuation allowance would be reversed, 
which would increase net income reported in future periods.

16

CLEAN HARBORS, INC. AND SUBSIDIARIES

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS

INCOME TAXES (continued)

During the ordinary course of its business, the Company is audited by 
federal and state tax authorities which may result in proposed assessments.  
The Company has received a notice of intent to assess state income taxes from 
one of the states in which it operates.  The case is currently undergoing 
administrative appeal.  If the Company loses the administrative appeal, the 
Company may be required to make a payment of approximately $3,000,000 to the 
state.  The Company believes that it has properly reported its state income 
and intends to contest the assessment vigorously. While the Company believes 
that the final outcome of the dispute will not have a material adverse effect 
on the Company's financial condition or results of operations, no assurance 
can be given as to the final outcome of the dispute, the amount of any final 
adjustments or the potential impact of such adjustments on the Company's 
financial condition or results of operations.

FACTORS THAT MAY AFFECT FUTURE RESULTS

From time to time, the Company and employees acting on behalf of the 
Company make forward-looking statements concerning the expected revenues, 
results of operations, capital expenditures, capital structure, plans and 
objectives of management for future operations, and future economic 
performance.  This report contains forward-looking statements.  There are many 
factors which could cause actual results to differ materially from those 
projected in a forward-looking statement, and there can be no assurance that 
such expectations will be realized.

The Company's future operating results may be affected by a number of 
factors, including the Company's ability to: continue to implement the 
treatment and disposal reengineering program; utilize its facilities and 
workforce profitably in the face of intense price competition; increase market 
share in an industry which appears to be downsizing and consolidating; realize 
benefits from cost reduction programs; generate incremental volumes of waste 
to be handled through its facilities from existing sales offices and service 
centers; obtain sufficient volumes of waste at prices which produce revenue 
sufficient to offset the operating costs of the facilities; minimize downtime 
and disruptions of operations; and compete successfully against other 
incinerators which have an established share of the incineration market.

17

CLEAN HARBORS, INC. AND SUBSIDIARIES

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS

FACTORS THAT MAY AFFECT FUTURE RESULTS (continued)

The Company's operations may be affected by the commencement and 
completion of major site remediation projects; cleanup of major spills or 
other events; seasonal fluctuations due to weather and budgetary cycles 
influencing the timing of customers' spending for remedial activities; the 
timing of regulatory decisions relating to hazardous waste management 
projects; changes in regulations governing the management of hazardous waste; 
secular changes in the waste processing industry towards waste minimization 
and the propensity for delays in the remedial market; suspension of 
governmental permits; and fines and penalties for noncompliance with the 
myriad of regulations governing the Company's diverse operations.  As a result 
of these factors, the Company's revenue and income could vary significantly 
from quarter to quarter, and past financial performance should not be 
considered a reliable indicator of future performance.

Typically during the first quarter of each calendar year there is less 
demand for environmental remediation due to the cold weather, particularly in 
the Northeast and Midwest regions, and increased possibility of unplanned 
weather related plant shutdowns.

FINANCIAL CONDITION AND LIQUIDITY

For the six months ended June 30, 1998, the Company's operations 
consumed $919,000 of cash primarily to finance higher levels of accounts 
receivable of $8,779,000 due to increased sales and to cover the net loss of 
$2,803,000 for the period. Partially offsetting these uses of cash were cash 
provided by increases in accounts payable $5,350,000 and other accrued 
expenses of $1,001,000, both of which were caused by higher volumes of 
activity, and the non-cash depreciation and amortization expenses of 
$4,536,000.   The Company obtained $5,553,000 from financing activities, 
which consisted primarily of additional net borrowings, and the Company used 
these funds primarily to purchase property, plant and equipment of 
$2,801,000, to make payments into a debt service reserve fund of $717,000 and 
to increase the amount of cash on hand by $1,180,000.

Federal and state regulations require liability insurance coverage for 
all facilities that treat, store, or dispose of hazardous waste, and financial 
assurance that funds will be available for closure of these facilities, should 
a facility cease operation, and post closure coverage where required by law.  
In 1989, the Company established a wholly-owned captive insurance company 
pursuant to the Federal Risk Retention Act of 1986.  This company qualifies as 
a licensed insurance company and is authorized to write closure, professional 
liability, and pollution liability insurance for the Company and its operating 
subsidiaries. Investments are held by the captive insurance company as assets 
against its insured liabilities and restricted for future payment of insurance 
claims.  In the six months of 1997, the Company replaced a portion of the 
closure insurance issued by its captive insurance company with bonds issued by 
a bonding company.  This allowed  the captive insurance company to remit funds 
previously classified as

18

CLEAN HARBORS, INC. AND SUBSIDIARIES

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS

FINANCIAL CONDITION AND LIQUIDITY (continued)

restricted cash to the Company.  In addition, on December 31, 1996, the 
Company had on deposit collateral of $5,650,000 with a commercial insurance 
company to provide for closure and post-closure of its incinerator and 
landfill.  During 1996, the Company renegotiated its agreement with the 
insurance company to replace collateral with a letter of credit.  The cash 
from this transaction was released to the Company in 1997.  As a result of 
these two transactions, the Company obtained $7,307,000 in the six months 
ending June 30, 1997.  The Company used these funds, as well as proceeds from 
the sale of fixed assets of $1,482,000 and $665,000 in cash on hand, primarily 
to reduce debt by $3,395,000 to purchase equipment and improve properties in 
the amount of $1,735,000 and to cover cash consumed in operations of 
$4,395,000. The deficit from operations was largely the result of a decrease 
in accounts payable of $5,594,000 and other accrued expenses of $1,752,000 
offset by decreases in accounts receivable of $2,268,000. Accounts payable 
decreased due to the Company paying vendors in a more timely basis, which 
allowed for smoother operations. Accounts receivable decreased in proportion 
to the decrease in selling prices.

The  Company expects 1998 capital additions to be in the range of 
$4,300,000. The 1998 capital spending budget has been revised upward from 
$3,000,000, due to the improved results of operations.

The Company's $35,000,000 Loan Agreement with a financial institution 
provides for certain covenants the most restrictive of which require the 
maintenance of a minimum level of working capital of $6,000,000 and adjusted 
net worth of not less than $33,000,000.  At June 30, 1998, working capital 
was $16,373,000 and adjusted net worth was $39,272,000.  In addition, the 
Indenture under which the Company has outstanding $10,000,000 of industrial 
revenue bonds the ("Bonds") contain certain covenants the most restrictive of 
which require that the Company maintain a rolling four quarter ratio of 
earnings before interest, income taxes, depreciation and amortization 
(EBITDA) to total debt service of 1.25 to 1.  On December 31, 1997 and June 
30, 1998 the Company was in violation of this covenant. On June 30, 1998, 
the debt service coverage ratio was 1.16 to 1. Under the terms of the 
Indenture, the deficiency in the debt coverage ratio will not result in a 
default, but the Company is required to pay in six equal monthly installments 
into a debt service reserve fund held by the Trustee for the Bonds a total 
amount equal to one year's interest on the Bonds.  Through June 30, 1998, the 
Company had paid $717,000 into this fund, as required.

19

CLEAN HARBORS, INC. AND SUBSIDIARIES

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS

FINANCIAL CONDITION AND LIQUIDITY (continued)

On June 30, 1998, funds available to borrow under the Revolver were 
$4,765,000. Management believes that sufficient resources will be available to 
meet the Company's cash requirements for the foreseeable future.  The Company 
has $50,000,000 of Senior Notes which mature in 2001.  Some portion or all of 
the borrowings under the Senior Notes will need to be refinanced by the 
maturity date.  The ability of the Company to refinance the Senior Notes at 
reasonable interest rates is dependent upon improving results from operations 
and is contingent on a favorable interest rate environment when the Company 
attempts to refinance the borrowings. 

Dividends on the Company's Series B Convertible Preferred Stock are 
payable on the 15th day of January, April, July and October, at the rate of 
$1.00 per share, per quarter; 112,000 shares are outstanding.  Under the terms 
of the preferred stock, the Company can elect to pay dividends in cash or in 
common stock with a market value equal to the amount of the dividend payable.  
The Company elected to pay the January 15 and April 15, 1998 dividends in 
common stock.  Accordingly, the Company issued 58,642 and 128,644 shares of 
common stock to the holders of the preferred stock in the three month and six 
month periods ended June 30, 1998, respectively.  The Company anticipates that 
the preferred stock dividends payable through 1998 will be paid in common 
stock.

The Company is in the process of reviewing computer systems and hardware 
control devices for compliance with the year 2000.  The work required to make 
the systems and control devices year 2000 compliant is ongoing.  The Company 
is using its best efforts to make all systems and control devices year 2000 
compliant prior to the end of 1998; however, no assurance can be given that 
this effort will be successful. The Company does not believe that the costs to 
be incurred to make the systems and control devices year 2000 compliant will 
be material to results of operations.

In March 1998, the American Institute of Certified Public Accountants 
issued Statement of Position (SOP) 98-1, "Internal Use Software," which 
provides guidance on the accounting for the costs of software developed or 
obtained for internal use.  SOP 98-1 is effective for fiscal years beginning 
after December 15, 1998.  Management does not expect the statement to have a 
material impact on its financial position or results of operations.

20

CLEAN HARBORS, INC. AND SUBSIDIARIES

PART II - OTHER INFORMATION

Item 1 - Legal Proceedings

As disclosed in the Form 10-K for the year ended December 31, 1997, the 
Company joined an ongoing lawsuit against the City of Chicago challenging the 
imposition of a waste charge by the City of Chicago on every gallon of waste 
received at the Company's Chicago facility.  Since 1990, the Company has paid 
approximately $3,000,000 to the City pursuant to this charge.

The lawsuit challenges the legal authority of the City of Chicago to 
impose the charge. The  Company contends the charge is, among other things, an 
unlawful tax on service occupations in violation of the Illinois Constitution. 
The Company was seeking: (1) a declaration by the Circuit Court of Cook County 
that the challenged charge is unconstitutional or otherwise unlawful; (2) an 
injunction against the City's continued assessment and collection of the 
charge and; (3) a refund of all charges paid plus interest.

On July 21, 1998, the Judge in the case issued a Final Order declaring 
the City of Chicago waste fee to be unconstitutional under Illinois law. The 
City has the right to appeal this decision and on August 7, 1998 the City 
filed a motion with the Court to reconsider its Final Order. The Court has 
taken the motion under advisement and will rule on it by September 11, 1998. 
The Company cannot predict the outcome of these proceedings, accordingly, no 
account receivable has been recorded on the books of the Company relating to 
this lawsuit. 

Item 2 - Changes in Securities

None

Item 3 - Defaults Upon Senior Debt

None

Item 4 - Submission of Matters to a Vote of Security Holders

The Company's 1998 Annual Meeting of the Stockholders was held on June 
17, 1998. At the meeting, the Stockholders elected Christy W. Bell and Daniel 
J. McCarthy  to serve as directors of the Company for a three-year term, 
until the 2001 Annual Meeting of Stockholders.  Other directors whose term of 
office as director continued after the meeting were: Alan S. McKim, John F. 
Kaslow, John T. Preston and Lorne R. Waxlax.

21

CLEAN HARBORS, INC. AND SUBSIDIARIES

PART II - OTHER INFORMATION

Item 5 - Other Information

None

Item 6 - Exhibits and Reports on Form 8-K

ITEM NO.                                   DESCRIPTION                                        LOCATION
- -------- --------------------------------------------------------------------------------  --------------

4.12   Sixth Amendment to Financing Agreements dated June 23, 1998 by and between
Congress Financial Corporation (New England), the Company's Subsidiaries as
Borrowers, and Clean Harbors, Inc. as Guarantor.................................  Filed herewith

Exhibit 27 - Financial Data Schedule.

Reports on Form 8-K 

None

22

CLEAN HARBORS, INC. AND SUBSIDIARIES

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 
1934, the registrant has duly caused this report to be signed on its behalf by 
the undersigned thereunto duly authorized.

Clean Harbors, Inc.
-------------------------
Registrant

ated:  August 13, 1998          By:  /s/ Alan S. McKim
--------------------------------------
Alan S. McKim
President and
Chief Executive Officer

Dated:  August 13, 1998         By:  /s/ Roger A. Koenecke
-------------------------------------
Roger A. Koenecke
Senior Vice President and
Chief Financial Officer

23 

Exhibit 4.12

June 23, 1998

CLEAN HARBORS ENVIRONMENTAL 
SERVICES, INC.
CLEAN HARBORS TECHNOLOGY
CORPORATION
CLEAN HARBORS KINGSTON FACILITY 
CORPORATION
CLEAN HARBORS OF BRAINTREE, INC.
CLEAN HARBORS SERVICES, INC.
CLEAN HARBORS OF NATICK, INC.
CLEAN HARBORS OF CONNECTICUT, INC.
MURPHY'S WASTE OIL SERVICE, INC.
CLEAN HARBORS OF CLEVELAND, INC.
MR. FRANK, INC.
SPRING GROVE RESOURCE RECOVERY, INC.

Re:  Sixth Amendment to Financing Agreements ("Sixth Amendment")

Gentlemen:

Reference is made to the Loan and Security Agreement dated May 8, 1995, 
as amended, between you and the undersigned (the "Loan Agreement").  All 
capitalized terms not otherwise defined herein shall have the meanings given 
such terms in the Loan Agreement.

Borrowers have requested an extension of the term of the Financing 
Agreements to May 8, 2000.  Subject to the terms and conditions hereof, the 
Lender agrees with the Borrowers as follows:

(1)  The first sentence of Section 12.1(a) of the Loan Agreement is 
deleted and replaced with the following sentence:

"This Agreement and the other Financing Agreements shall become 
effective as of the date set forth on the first page hereof and shall 
continue in full force and effect for a term ending on the 

June 24, 1998
Page 2

date five (5) years from the date hereof (the "Renewal Date"), and from 
year to year thereafter, unless sooner terminated pursuant to the terms 
hereof; provided, that, Lender may, at its option, extend the Renewal 
Date to the date six (6) years from the date hereof by giving Borrower 
notice at least one hundred twenty (120) days prior to the fifth 
anniversary of this Agreement."

(2)  Section 12.1(c) of the Loan Agreement is deleted in its entirety 
and replaced with the following:

"If for any reason this Agreement is terminated prior to the end of the 
then current term or renewal term of this Agreement, in view of the 
impracticality and extreme difficulty of ascertaining actual damages and 
by mutual agreement of the parties as to a reasonable calculation of 
Lender's lost profits as a result thereof, Borrower agrees to pay to 
Lender, upon the effective date of such termination, an early 
termination fee in the amount of 1/2% of the Revolving Credit Limit if 
such termination is effective in the period May 9, 1998 to and including 
May 8, 2000.  Such early termination fee shall be presumed to be the 
amount of damages sustained by Lender as a result of such early 
termination and Borrower agrees that it is reasonable under the 
circumstances currently existing.  The refinancing and repayment of the 
Term Loan through the issuance of pollution control authority industrial 
revenue bonds shall not trigger the payment of the early termination 
fee.  The early termination fee provided for in this Section 12.1 shall 
be deemed included in the Obligations."

(3)  This Sixth Amendment and the Lender's obligations hereunder shall 
not be effective until each of the following conditions are satisfied:

(a)  all requisite corporate action and proceedings of the 
Borrowers in connection with this Sixth Amendment shall be satisfactory in 
form and substance to Lender and Lender shall receive certified copies of 
such corporate action and proceedings as Lender may request;

(b)  no material adverse change shall have occurred in the assets, 
business or prospects of any Borrower since the date of the most recent 
financial statements furnished to Lender pursuant to the Loan Agreement and 
no change or event shall have occurred which would impair the ability of any 
Borrower or any Obligor to perform its obligations under the Loan Agreement 
or any of the other Financing Agreements or of Lender to enforce the 
Obligations or to realize upon the Collateral; and

(c)  Borrowers shall pay to Lender, and directs Lender to debit its 
loan account for, an additional facility fee equal to $50,000.00, which fee 
shall be fully earned and non-refundable on the date hereof.

2

July 24, 1998
Page 3

(4)  Each Borrower confirms and agrees that (a) all representations and 
warranties contained in the Loan Agreement and in the other Financing 
Agreements are on the date hereof true and correct in all material respects 
(except for changes that have occurred as permitted by the covenants in 
Section 9 of the Loan Agreement), and (b) it is unconditionally and jointly 
and severally liable for the punctual and full payment of all Obligations, 
including, without limitation, all charges, fees, expenses and costs 
(including attorneys' fees and expenses) under the Financing Agreements, and 
that no Borrower has any defenses, counterclaims or setoffs with respect to 
full, complete and timely payment of all Obligations.

(5)  Each Guarantor, for value received, hereby assents to the 
Borrowers' execution and delivery of this Amendment, and to the performance 
by the Borrowers of their respective agreements and obligations hereunder.  
This Amendment and the performance or consummation of any transaction or 
matter contemplated under this Amendment, shall not limit, restrict, 
extinguish or otherwise impair any of the Guarantor's liability to Lender 
with respect to the payment and other performance obligations of the 
Guarantors pursuant to the Guarantees, dated May 8, 1995 executed for the 
benefit of Lender.  Each Guarantor acknowledges that it is unconditionally 
liable to Lender for the full and complete payment of all Obligations 
including, without limitation, all charges, fees, expenses and costs 
(including attorney's fees and expenses) under the Financing Agreements and 
that such Guarantor has no defenses, counterclaims or setoffs with respect to 
full, complete and timely payment of any and all Obligations.

(6)  Borrowers hereby agree to pay to Lender all reasonable attorney's 
fees and costs which have been incurred or may in the future be incurred by 
Lender in connection with the negotiation and preparation of this Amendment 
and any other documents and agreements prepared in connection with this 
Amendment.  The undersigned confirm that the Financing Agreements remain in 
full force and effect without amendment or modification of any kind, except 
for the amendments explicitly set forth herein.  The undersigned further 
confirm that no Event of Default or events which with notice or the passage 
of time or both would constitute an Event of Default have occurred and are 
continuing.  The execution and delivery of this Amendment by Lender shall not 
be construed as a waiver by Lender of any Event of Default under the 
Financing Agreements.  This Amendment shall be deemed to be a Financing 
Agreement and, together with the other Financing Agreements, constitute the 
entire agreement between the parties with respect to the subject matter 
hereof and supersedes all prior dealings, correspondence, conversations or 
communications between the parties with respect to the subject matter hereof.

3

June 24, 1998
Page 4

If you accept and agree to the foregoing please sign and return the 
enclosed copy of this letter.  Thank you.

Very truly yours,

CONGRESS FINANCIAL CORPORATION
(NEW ENGLAND)

By: /s/ KATHLEEN J. MERRITT     
----------------------------
Name: Kathleen J. Merritt
Title: Vice President

AGREED:
- -------

CLEAN HARBORS ENVIRONMENTAL 
SERVICES, INC.
CLEAN HARBORS TECHNOLOGY
CORPORATION
CLEAN HARBORS KINGSTON FACILITY 
CORPORATION
CLEAN HARBORS OF BRAINTREE, INC.
CLEAN HARBORS SERVICES, INC.
CLEAN HARBORS OF NATICK, INC.
CLEAN HARBORS OF CONNECTICUT, INC.
MURPHY'S WASTE OIL SERVICE, INC.
CLEAN HARBORS OF CLEVELAND, INC.
MR. FRANK, INC. 
SPRING GROVE RESOURCE RECOVERY, INC.

By: /s/ STEPHEN MOYNIHAN
----------------------------
Name: Stephen Moynihan
Title: Senior Vice President

GUARANTORS:

CLEAN HARBORS, INC.

By: /s/ STEPHEN MOYNIHAN
----------------------------
Name: Stephen Moynihan
Title: Senior Vice President

4

June 24, 1998
Page 5

CLEAN HARBORS OF BALTIMORE, INC.

By: /s/ STEPHEN MOYNIHAN
----------------------------
Name: Stephen Moynihan
Title: Senior Vice President

5

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<CIK> 0000822818
<NAME> CLEAN HARBORS
<MULTIPLIER> 1,000

<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
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