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TABLE OF CONTENTS

Table of Contents

As filed with the Securities and Exchange Commission on April 3, 2013

Registration No. 333-          

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549



FORM S-4
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933



CLEAN HARBORS, INC.
(Exact name of Registrant as specified in its charter)
(See table of additional Guarantor Registrants on next page)

Massachusetts
(State or other jurisdiction of
incorporation or organization)
  4953
(Primary Standard Industrial
Classification Code Number)
  04-2997780
(I.R.S. Employer
Identification Number)

42 Longwater Drive
Norwell, Massachusetts 02161-9149
(781) 792-5000

(Address, including zip code, and telephone number, including
area code, of Registrant's principal executive offices)
(See inside front cover for information regarding Guarantor Registrants.)

C. Michael Malm, Esq.
Davis, Malm & D'Agostine, P.C.
One Boston Place
Boston, Massachusetts 02108
Telephone: (617) 367-2500
Telecopy: (617) 523-6215

(Address, including zip code, and telephone number, including area code, of agent for service of process)



Approximate date of commencement of proposed sale to the public:
As soon as practicable after this Registration Statement becomes effective.

          If the securities being registered on this Form are being offered in connection with the formation of a holding company and there is compliance with General Instruction G, check the following box.    o

          If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.    o

          If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.    o

          Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer ý   Accelerated filer o   Non-accelerated filer o
(Do not check if a
small reporting company)
  Smaller reporting company o

          If applicable, place an X in the box to designate the appropriate rule provisions relied upon in conducting this transaction:

CALCULATION OF REGISTRATION FEE

               
 
Title of Each Class of Securities
to be Registered

  Amount to be
Registered

  Proposed Maximum
Offering Price Per
Security

  Proposed Maximum
Aggregate Offering
Price(1)

  Amount of
Registration Fee(2)

 

5.125% Senior Notes due 2021

  $600,000,000   100%   $600,000,000   $81,840.00
 

Guarantees(3)

  N/A   N/A   N/A   N/A

 

(1)
Estimated solely for the purposes of calculating the registration fee in accordance with Rule 457(f)(2) under the Securities Act of 1933.

(2)
Calculated based upon the book value of the securities to be received by the Registrant in the exchange in accordance with Rule 457(f)(2) under the Securities Act of 1933.

(3)
No separate consideration will be received for the guarantees, and no separate fee is payable, pursuant to Rule 457(n) under the Securities Act of 1933.



          The Registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until this registration statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

   


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Guarantor Registrants

Exact name of Guarantor Registrants as specified in its charter
  Jurisdiction of
Incorporation or
Organization
  Primary Standard
Industrial
Classification Code
Numbers
  I.R.S. Employer
Identification
Number
 

Altair Disposal Services, LLC

  Delaware     4953     56-2295310  

ARC Advanced Reactors and Columns, LLC

  Delaware     4953     26-4260688  

Baton Rouge Disposal, LLC

  Delaware     4953     56-2295315  

Bridgeport Disposal, LLC

  Delaware     4953     56-2295319  

CH International Holdings, LLC

  Delaware     4953     47-0942135  

Clean Harbors Andover, LLC

  Delaware     4953     56-2295323  

Clean Harbors Antioch, LLC

  Delaware     4953     02-0646441  

Clean Harbors Aragonite, LLC

  Delaware     4953     02-0646449  

Clean Harbors Arizona, LLC

  Delaware     4953     56-2295308  

Clean Harbors Baton Rouge, LLC

  Delaware     4953     56-2295309  

Clean Harbors BDT, LLC

  Delaware     4953     56-2295313  

Clean Harbors Buttonwillow, LLC

  Delaware     4953     56-2295316  

Clean Harbors Catalyst Technologies, LLC

  Delaware     4953     32-0003075  

Clean Harbors Chattanooga, LLC

  Delaware     4953     56-2295318  

Clean Harbors Clive, LLC

  Delaware     4953     56-2295229  

Clean Harbors Coffeyville, LLC

  Delaware     4953     56-2295320  

Clean Harbors Colfax, LLC

  Delaware     4953     56-2295321  

Clean Harbors Deer Park, LLC

  Delaware     4953     48-1263743  

Clean Harbors Deer Trail, LLC

  Delaware     4953     56-2295327  

Clean Harbors Development, LLC

  Delaware     4953     30-0471576  

Clean Harbors Disposal Services, Inc. 

  Delaware     4953     04-3667165  

Clean Harbors El Dorado, LLC

  Delaware     4953     94-3401916  

Clean Harbors Environmental Services, Inc. 

  Massachusetts     4953     04-2698999  

Clean Harbors Exploration Services, Inc. 

  Nevada     4953     84-1713357  

Clean Harbors Florida, LLC

  Delaware     4953     56-2295283  

Clean Harbors Grassy Mountain, LLC

  Delaware     4953     56-2295286  

Clean Harbors Industrial Services, Inc. 

  Delaware     4953     52-2339707  

Clean Harbors Kansas, LLC

  Delaware     4953     56-2295290  

Clean Harbors Kingston Facility Corporation

  Massachusetts     4953     04-3074299  

Clean Harbors LaPorte, LLC. 

  Delaware     4953     48-1263744  

Clean Harbors Laurel, LLC

  Delaware     4953     56-2295292  

Clean Harbors Lone Mountain, LLC

  Delaware     4953     56-2295299  

Clean Harbors Lone Star Corp. 

  Delaware     4953     06-1655334  

Clean Harbors Los Angeles, LLC

  Delaware     4953     56-2295303  

Clean Harbors (Mexico), Inc. 

  Delaware     4953     56-2294684  

Clean Harbors of Baltimore, Inc. 

  Delaware     4953     23-2091580  

Clean Harbors of Braintree, Inc. 

  Massachusetts     4953     04-2507498  

Clean Harbors of Connecticut, Inc. 

  Delaware     4953     06-1025746  

Clean Harbors Pecatonica, LLC

  Delaware     4953     56-2295314  

Clean Harbors PPM, LLC

  Delaware     4953     56-2295269  

Clean Harbors Recycling Services of Chicago, LLC

  Delaware     4953     36-4599645  

Clean Harbors Recycling Services of Ohio, LLC

  Delaware     4953     36-4599643  

Clean Harbors Reidsville, LLC

  Delaware     4953     56-2295199  

Clean Harbors San Jose, LLC

  Delaware     4953     56-2295202  

Clean Harbors Services, Inc. 

  Massachusetts     4953     06-1287127  

Clean Harbors Tennessee, LLC

  Delaware     4953     56-2295205  

Clean Harbors Westmorland, LLC

  Delaware     4953     56-2295208  

Clean Harbors White Castle, LLC

  Delaware     4953     56-2295210  

Clean Harbors Wilmington, LLC

  Delaware     4953     13-4335799  

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Exact name of Guarantor Registrants as specified in its charter
  Jurisdiction of
Incorporation or
Organization
  Primary Standard
Industrial
Classification Code
Numbers
  I.R.S. Employer
Identification
Number
 

Crowley Disposal, LLC

  Delaware     4953     06-1655356  

Disposal Properties, LLC

  Delaware     4953     56-2295213  

DuraTherm, Inc. 

  Delaware     4953     26-1821662  

GSX Disposal, LLC

  Delaware     4953     56-2295215  

Hilliard Disposal, LLC

  Delaware     4953     56-2295217  

Murphy's Waste Oil Service, Inc. 

  Massachusetts     4953     04-2490849  

Peak Energy Services USA, Inc. 

  Delaware     4953     98-0429483  

Plaquemine Remediation Services, LLC

  Delaware     4953     56-2295280  

Roebuck Disposal, LLC

  Delaware     4953     56-2295219  

Safety-Kleen Envirosystems Company

  California     4953     94-2764195  

Safety-Kleen Envirosystems Company of Puerto Rico, Inc. 

  Indiana     4953     35-1283524  

Safety-Kleen, Inc. 

  Delaware     4953     90-0127028  

Safety-Kleen International, Inc. 

  Delaware     4953     36-3396234  

Safety-Kleen Systems, Inc. 

  Wisconsin     4953     39-6090019  

Sanitherm USA, Inc. 

  Delaware     4953     68-0678615  

Sawyer Disposal Services, LLC

  Delaware     4953     56-2295224  

Service Chemical, LLC

  Delaware     4953     56-2295322  

SK Holding Company, Inc. 

  Delaware     4953     90-0127037  

Spring Grove Resource Recovery, Inc. 

  Delaware     4953     76-0313183  

The Solvents Recovery Service of New Jersey, Inc. 

  New Jersey     4953     22-1293778  

Tulsa Disposal, LLC

  Delaware     4953     56-2295227  

        The address, including zip code, and telephone number, including area code, of the principal executive office of each guarantor registrant listed above is the same as those of the Registrant, Clean Harbors, Inc.


Table of Contents

The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission relating to these securities is effective. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

Subject to Completion, dated April 3, 2013

PROSPECTUS

$600,000,000

Clean Harbors, Inc.

5.125% Senior Notes due 2021 and Related Guarantees

        On December 7, 2012, we issued $600.0 million aggregate principal amount of 5.125% Senior Notes due 2021 (the "old notes") in an unregistered private placement under an indenture dated December 7, 2012.

        We are offering to exchange up to $600.0 million aggregate principal amount of 5.125% Senior Notes due 2021 (the "new notes") that we have registered under the Securities Act of 1933 for up to all of the $600.0 million aggregate principal amount of outstanding old notes. This prospectus refers to the new notes and the old notes collectively as the "notes." The old notes are, and the new notes will be, fully and unconditionally and jointly and severally guaranteed by substantially all of our existing and future domestic restricted subsidiaries. The guarantees are, however, subject to customary release provisions under which, in particular, the guarantee of any of our domestic restricted subsidiaries will be released if we sell such subsidiary to an unrelated third party in accordance with the terms of the indenture which governs the notes. Such guarantees of the new notes are securities which have been registered under the Securities Act and are being offered, along with the new notes, by this prospectus in exchange for the old notes and related guarantees.

        See "Risk Factors" beginning on page 9 to read about factors you should consider in connection with the exchange offer.

        Each broker-dealer that receives new notes for its own account in exchange for old notes acquired by such broker-dealer as a result of market-making activities or other trading activities must deliver a prospectus in connection with a resale of the new notes and provide us in the letter of transmittal with a signed acknowledgement of this obligation. The letter of transmittal states that by so acknowledging and by delivering a prospectus, any such broker-dealer will not be deemed to admit that it is an "underwriter" within the meaning of the Securities Act. A broker-dealer may use this prospectus, as amended or supplemented from time to time, in connection with any such resale of new notes. We have agreed that for a period of 180 days after the expiration date of the exchange offer, we will make this prospectus available to broker-dealers for use in connection with any such resale of new notes. See "Plan of Distribution."

        Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of the new notes or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is                    , 2013.


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TABLE OF CONTENTS

 
  Page  

SUMMARY

    1  

RISK FACTORS

    9  

USE OF PROCEEDS

    25  

RATIO OF EARNINGS TO FIXED CHARGES

    25  

CAPITALIZATION

    26  

SELECTED HISTORICAL CONSOLIDATED FINANCIAL INFORMATION

    27  

DESCRIPTION OF OTHER INDEBTEDNESS

    31  

THE EXCHANGE OFFER

    33  

DESCRIPTION OF THE NOTES

    43  

UNITED STATES FEDERAL INCOME AND ESTATE TAX CONSIDERATIONS

    86  

PLAN OF DISTRIBUTION

    90  

LEGAL MATTERS

    90  

EXPERTS

    90  



        In this prospectus, unless the context otherwise requires, "we," "our," "us," "Clean Harbors" or the "Company" refers collectively to Clean Harbors, Inc. and its subsidiaries. In this prospectus, all references to our consolidated financial statements include the respective notes thereto. Unless otherwise specified with respect to certain amounts which are stated in Canadian dollars ("Cdn $"), all dollar amounts in this prospectus are in U.S. dollars ($).


WHERE YOU CAN FIND ADDITIONAL INFORMATION

        We file annual, quarterly and current reports, proxy statements and other information with the Securities and Exchange Commission (the "SEC"). Our SEC filings are available to the public over the Internet at the SEC's web site at http://www.sec.gov. Copies of the documents we file with the SEC can be read at the SEC's public reference facility at 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the operation of its public reference facility.

        We have filed this prospectus with the SEC as part of a registration statement on Form S-4 under the Securities Act. This prospectus does not contain all of the information set forth in the registration statement because some parts of the registration statement are omitted in accordance with the rules and regulations of the SEC. The registration statement and its exhibits are available for inspection and copying as set forth above.

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Table of Contents


DOCUMENTS INCORPORATED BY REFERENCE

        We are "incorporating by reference" in this prospectus some of the documents we file with the SEC. This means that we can disclose important information to you by referring you to those documents. The information in the documents incorporated by reference is considered to be part of this prospectus. Information in specified documents that we file with the SEC after the date of this prospectus will automatically update and supersede information in this prospectus. We incorporate by reference the documents listed below and any future filings we may make with the SEC under Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 after the date of filing of the initial registration statement relating to the exchange offer and prior to the termination of any offering of securities offered by this prospectus:

        Information contained in this prospectus supplements, modifies or supersedes, as applicable, the information contained in earlier-dated documents incorporated by reference. Information contained in later-dated documents incorporated by reference supplements, modifies or supersedes, as applicable, the information contained in this prospectus or in earlier-dated documents incorporated by reference.

        We will provide a copy of the documents we incorporate by reference (other than exhibits, unless the exhibit is specifically incorporated by reference into the filing requested), at no cost, to you if you submit a request to us by writing to or telephoning us at the following address or telephone number:

Clean Harbors, Inc.
42 Longwater Drive
Norwell, Massachusetts 02061-9149
Telephone: (781) 792-5100
Attention: Executive Offices

        If you would like to request any documents, please do so by no later than                        . 2013 in order to receive them before the expiration of the exchange offer.

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        You should rely only on the information contained or incorporated by reference in this prospectus. We have not authorized any other person to provide you with different or additional information. If anyone provides you with different or additional information, you should not rely on it. The information contained or incorporated by reference in this prospectus is accurate only as of the date on the front cover of this prospectus or the date of the document incorporated by reference. Our business, financial condition, results of operations and prospects may have changed since those respective dates. We are not making an offer to exchange the new notes for old notes in any jurisdiction where the offer or exchange is not permitted.


Market and Related Information

        We obtained the market and related information used in this prospectus from our own research, surveys or studies conducted by third parties and industry or general publications, such as EI Digest, and other publicly available sources. Industry and general publications and surveys generally state that they have obtained information from sources believed to be reliable. Although we have not independently verified all of the market data and related information contained in this prospectus which we have obtained from third party sources, we believe such data and information is accurate as of the date of this prospectus or the respective earlier dates specified herein.


Forward-Looking Statements

        This prospectus includes "forward-looking statements," as defined by federal securities laws, with respect to our financial condition, results of operations and business and our expectations or beliefs concerning future events. Words such as, but not limited to, "believe," "expect," "anticipate," "estimate," "intend," "plan," "targets," "likely," "will," "would," "could" and similar expressions or phrases identify forward-looking statements. Such statements may include, but are not limited to, statements about future financial and operating results, the Company's plans, objectives, expectations and intentions and other statements that are not historical facts.

        All forward-looking statements involve risks and uncertainties. Many risks and uncertainties are inherent in the environmental, industrial and energy services industries. Others are more specific to our operations. The occurrence of the events described, and the achievement of the expected results, depend on many events, some or all of which are not predictable or within our control. Actual results may differ materially from expected results.

        Factors that may cause actual results to differ from expected results include, among others:

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        All future written and verbal forward-looking statements attributable to us or any person acting on our behalf are expressly qualified in their entirety by the cautionary statements contained or referred to above. We undertake no obligation, and specifically decline any obligation, to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. In light of these risks, uncertainties and assumptions, the forward-looking events discussed in this prospectus might not occur.

        See "Risk Factors" in this prospectus for a more complete discussion of these risks and uncertainties and for other risks and uncertainties. These factors and the other risk factors described in this prospectus are not necessarily all of the important factors that could cause actual results to differ materially from those expressed in any of our forward-looking statements and other unknown or unpredictable factors also could harm our results. Consequently, actual results or developments anticipated by us may not be realized and, even if substantially realized, they may not have the expected consequences to, or effects on, us. Given these uncertainties, prospective investors are cautioned not to place undue reliance on such forward-looking statements.

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SUMMARY

        This summary highlights information contained elsewhere in this prospectus, is not complete and does not contain all of the information that may be important to you. We urge you to read this entire prospectus carefully, including the "Risk Factors" section and the consolidated financial statements and related notes incorporated by reference herein.


Our Company

        We are a leading provider of environmental, energy and industrial services throughout North America. We have a network of more than 400 service locations, including service centers, branches, active hazardous waste management properties and used oil processing facilities. The service centers and branches are the principal sales and service centers from which we provide our environmental, energy and industrial services. The hazardous waste management properties include incineration facilities, commercial landfills, wastewater treatment facilities, treatment, storage and disposal facilities ("TSDFs"), solvent recycling facilities, locations specializing in polychlorinated biphenyls ("PCB") management, and oil storage and recycling facilities. The oil processing facilities include oil accumulation centers, oil terminals and oil re-refineries. Some of our properties offer multiple capabilities. In addition, we have satellite and support locations, and corporate and regional offices.

        The wastes that we handle include materials that are classified as "hazardous" because of their unique properties, as well as other materials subject to federal and state environmental regulation. We provide final treatment and disposal services designed to manage hazardous and non-hazardous wastes which cannot be economically recycled or reused. We transport, treat and dispose of industrial wastes for commercial and industrial customers, health care providers, educational and research organizations, other environmental services companies and governmental entities. We also provide industrial maintenance and production, lodging, and exploration services to the oil and gas, pulp and paper, manufacturing and power generation industries throughout North America.


Our Services

        During 2012, we reported our business in four operating segments, consisting of:

Technical Services and Field Services are included as part of Clean Harbors Environmental Services, and Industrial Services and Oil and Gas Field Services are included as part of Clean Harbors Energy and Industrial Services.

        On December 28, 2012, we acquired Safety-Kleen, Inc. for approximately $1.3 billion. Safety-Kleen, headquartered in Richardson, Texas, is the largest re-refiner and recycler of used oil in North

 

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America and a leading provider of parts cleaning and environmental services to commercial, industrial and automotive customers. Prior to the acquisition, Safety-Kleen reported its business in two reportable segments, consisting of:

With the acquisition, we are reviewing our consolidated operations and organizational structure on a go forward basis. We expect to adjust our reportable segments and reporting after completion of our review.


The Environmental Services Industry

        According to industry reports, the hazardous waste disposal market in North America generates total revenues in excess of $2.0 billion per year. We also service the much larger industrial maintenance market. The $2.0 billion estimate does not include the industrial maintenance market, except to the extent that the costs of disposal of hazardous wastes generated as a result of industrial maintenance are included. The largest generators of hazardous waste materials are companies in the chemical, petrochemical, primary metals, paper, furniture, aerospace and pharmaceutical industries.

        The hazardous waste management industry was "created" in 1976 with the passage of the Resource Conservation and Recovery Act, or "RCRA." RCRA requires waste generators to distinguish between "hazardous" and "non-hazardous" wastes, and to treat, store and dispose of hazardous waste in accordance with specific regulations. This new regulatory environment, combined with strong economic growth, increased corporate concern about environmental liabilities, and the early stage nature of the hazardous waste management industry contributed initially to rapid growth in the industry. However, by the mid to late 1990s, the hazardous waste management industry was characterized by overcapacity, minimal regulatory advances and pricing pressure. Since 2001, over one-third of all North American commercial incineration capacity has been eliminated, and we believe that competition has been reduced through consolidation and that new regulations have increased the overall barriers to entry.

        The collection and disposal of solid and hazardous wastes are subject to local, state, provincial and federal requirements and regulations, which regulate health, safety, the environment, zoning and land use. Among these regulations in the United States is the Comprehensive Environmental Response, Compensation and Liability Act of 1980, or "CERCLA," which holds generators and transporters of hazardous substances, as well as past and present owners and operators of sites where there has been a hazardous release, strictly, jointly and severally liable for environmental cleanup costs resulting from the release or threatened release of hazardous substances. Canadian companies are regulated under similar regulations, but the responsibility and liability associated with the waste passes from the generator to the transporter or receiver of the waste, in contrast to provisions of CERCLA.

 

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The Exchange Offer

Background

  On December 7, 2012, we completed a private placement of the old notes. In connection with that private placement, we entered into a registration rights agreement with Goldman Sachs & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Credit Suisse (USA) LLC, the initial purchasers of the old notes, in which we agreed to deliver this prospectus to you and to make the exchange offer.

The Exchange Offer

 

We are offering to exchange up to $600.0 million aggregate principal amount of our new notes which have been registered under the Securities Act for up to all of the $600.0 million aggregate principal amount of our old notes. You may tender old notes only in denominations of $2,000 and any integral multiple of $1,000.

Resale of New Notes

 

Based on interpretive letters of the SEC staff to third parties, we believe that you may resell and transfer the new notes issued pursuant to the exchange offer in exchange for old notes without compliance with the registration and prospectus delivery provisions of the Securities Act if:

 

you are acquiring the new notes in the ordinary course of your business for investment purposes;

 

you have no arrangement or understanding with any person to participate in the distribution of the new notes; and

 

you are not our affiliate as defined under Rule 405 under the Securities Act.

 

If you fail to satisfy any of these conditions, you must comply with the registration and prospectus delivery requirements of the Securities Act in connection with a resale of the new notes.

 

Broker-dealers that acquired old notes directly from us, but not as a result of market-making activities or other trading activities, must comply with the registration and prospectus delivery requirements of the Securities Act in connection with a resale of the new notes.

 

Each broker-dealer that receives new notes for its own account pursuant to the exchange offer in exchange for old notes that it acquired as a result of market-making or other trading activities must deliver a prospectus in connection with any resale of the new notes and provide us with a signed acknowledgement of this obligation.

Transfer Restrictions

 

The new notes have been registered under the Securities Act and generally will be freely transferable. We do not intend to list the notes on any securities exchange.

 

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Limited Market

 

The new notes will be newly issued securities for which there is currently no market. Although the initial purchasers of the old notes have informed us that they intend to make a market in the new notes, they are not obligated to do so and may discontinue market-making at any time without notice. Accordingly, a liquid market for the new notes may not develop or be maintained.

Consequences If You Do Not Exchange Your Old Notes

 

Old notes that are not tendered in the exchange offer or are not accepted for exchange will continue to bear legends restricting their transfer. You will not be able to offer or sell the old notes unless:

 

an exemption from the requirements of the Securities Act is available to you;

 

we register the resale of old notes under the Securities Act; or

 

the transaction requires neither an exemption from nor registration under the requirements of the Securities Act.

 

After the completion of the exchange offer, we will no longer have an obligation to register the old notes, except in limited circumstances.

Expiration Date

 

5:00 p.m., New York City time, on                        , 2013 unless we extend the exchange offer.

Conditions to the Exchange Offer

 

The exchange offer is subject to limited, customary conditions, which we may waive.

Procedures for Tendering Old Notes

 

If you wish to accept the exchange offer, you must deliver to the exchange agent:

 

either a completed and signed letter of transmittal or, for old notes tendered electronically, an agent's message from The Depository Trust Company, which we refer to as "DTC," stating that the tendering participant agrees to be bound by the letter of transmittal and the terms of the exchange offer;

 

your old notes, either by tendering them in physical form or by timely confirmation of book-entry transfer through DTC; and

 

all other documents required by the letter of transmittal.

 

These actions must be completed before the expiration of the exchange offer.

 

If you hold old notes through DTC, you must comply with its standard procedures for electronic tenders, by which you will agree to be bound by the letter of transmittal.

 

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By signing, or by agreeing to be bound by the letter of transmittal, you will be representing to us that:

 

you will be acquiring the new notes in the ordinary course of your business;

 

you have no arrangement or understanding with any person to participate in the distribution of the new notes; and

 

you are not our affiliate as defined under Rule 405 under the Securities Act.

 

See "The Exchange Offer—Procedures for Tendering."

Guaranteed Delivery Procedures for Tendering Old Notes

 

If you cannot meet the expiration deadline or you cannot deliver your old notes, the letter of transmittal or any other documentation to comply with the applicable procedures under DTC standard operating procedures for electronic tenders in a timely fashion, you may tender your notes according to the guaranteed delivery procedures set forth under "The Exchange Offer—Guaranteed Delivery Procedures."

Special Procedures for Beneficial Holders

 

If you beneficially own old notes which are registered in the name of a broker, dealer, commercial bank, trust company or other nominee and you wish to tender in the exchange offer, you should contact that registered holder promptly and instruct that person to tender on your behalf. If you wish to tender in the exchange offer on your own behalf, you must, prior to completing and executing the letter of transmittal and delivering your old notes, either arrange to have the old notes registered in your name or obtain a properly completed bond power from the registered holder. The transfer of registered ownership may take considerable time.

Withdrawal Rights

 

You may withdraw your tender of old notes at any time before the exchange offer expires.

Tax Consequences

 

The exchange pursuant to the exchange offer will not be a taxable event for U.S. federal income tax purposes. See "United States Federal Income and Estate Tax Considerations."

Use of Proceeds

 

We will not receive any proceeds from the exchange or the issuance of new notes in connection with the exchange offer.

Exchange Agent

 

U.S. Bank National Association is serving as exchange agent in connection with the exchange offer. The address and telephone number of the exchange agent are set forth under "The Exchange Offer—Exchange Agent."

 

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Summary Description of the New Notes

        The old notes are, and the new notes will be, governed by an indenture among Clean Harbors, Inc., as the issuer, the guarantors party thereto and U.S. Bank National Association, as trustee. The following is a summary of certain terms of the indenture and the notes and is qualified in its entirety by the more detailed information contained under the heading "Description of the Notes" elsewhere in this prospectus. Furthermore, certain description in this prospectus of provisions of the indenture are summaries of such provisions and are qualified by reference to the indenture.

        The form and terms of the new notes are substantially identical to the form and terms of the old notes, except that:

        The new notes will evidence the same debt as the old notes and will rank equally with the old notes. The same indenture will govern both the old notes and the new notes. This prospectus refers to the old notes and the new notes collectively as the "notes."

Issuer   Clean Harbors, Inc. (the "Issuer").

New Notes Offered

 

$600,000,000 aggregate principal amount of 5.125% Senior Notes due 2021.

Maturity Date

 

June 1, 2021.

Interest Payments

 

Interest on the notes is payable semi-annually in arrears on June 1 and December 1 of each year, commending on June 1, 2013.

Guarantees

 

The old notes are, and the new notes will be, fully and unconditionally and jointly and severally guaranteed on a senior unsecured basis by substantially all of our existing and future domestic subsidiaries. The guarantees are, however, subject to customary release provisions under which, in particular, the guarantee of any of our domestic restricted subsidiaries will be released if we sell such subsidiary to an unrelated third party in accordance with the terms of the indenture which governs the notes. The old notes are not, and the new notes will not be, guaranteed by our Canadian and other foreign subsidiaries.

 

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Ranking   The old notes are, and the new notes will be, our and the guarantors' unsecured senior obligations. The old notes and the new notes rank equally with our and the guarantors' existing and future senior obligations and will rank senior to any future indebtedness that is specifically subordinated to the notes and the guarantees. The notes are effectively subordinated to all of our and our subsidiaries' secured indebtedness to the extent of the value of the assets securing such debt. The notes are also structurally subordinated to all indebtedness and other liabilities, including trade payables, of our subsidiaries that are not guarantors of the notes.

 

 

As of December 31, 2012, we and our guarantor subsidiaries had no outstanding loans under our revolving credit facility, but we then had $132.6 million of outstanding letters of credit and $8.0 million of capital lease obligations. The notes and the guarantees rank effectively junior to debt (including loans and reimbursement obligations in respect of outstanding letters of credit) under our revolving credit agreement and our capital lease obligations to the extent of the value of the assets securing such secured debt. Furthermore, our non-guarantor subsidiaries had as of December 31, 2012 approximately $211.3 million of total liabilities (excluding intercompany liabilities and debt). The notes and the guarantees rank structurally junior to those obligations of our non-guarantor subsidiaries.

Optional Redemption

 

We may redeem some or all of the notes at any time on or after December 1, 2016, at the redemption prices described in "Description of the Notes—Redemption—Optional Redemption," plus accrued and unpaid interest to the date of redemption. At any time, or from time to time, prior to December 1, 2016, we may also redeem some or all of the notes at a price equal to 100% of the principal amount thereof plus the make-whole premium described under "Description of the Notes—Redemption—Optional Redemption."

 

 

At any time prior to December 1, 2015, we may also redeem up to 35% of the aggregate principal amount of all notes issued under the indenture with the net proceeds of certain equity offerings at a redemption price equal to 105.125% of the principal amount of the notes plus accrued and unpaid interest to the date of redemption. We may make that redemption only if, after the redemption, at least 65% of the aggregate principal amount of all notes issued under the indenture remains outstanding.

Change of Control

 

If we experience a Change of Control (as defined under "Description of the Notes—Certain Covenants—Change of Control"), we will be required to make an offer to repurchase the notes at a price equal to 101% of the principal amount thereof, plus accrued and unpaid interest to the date of repurchase.

 

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Certain Covenants   The indenture governing the notes restricts our ability and the ability of our restricted subsidiaries to, among other things:

 

incur or guarantee additional indebtedness (including, for this purpose, reimbursement obligations under letters of credit) or issue certain preferred stock;

 

pay dividends or make other distributions to our stockholders;

 

purchase or redeem capital stock or subordinated indebtedness;

 

make investments;

 

create liens;

 

incur restrictions on the ability of our restricted subsidiaries to pay dividends or make other payments to us;

 

sell assets, including capital stock of our subsidiaries;

 

consolidate or merge with or into other companies or transfer all or substantially all of our assets; and

 

engage in transactions with affiliates.


 

 

These covenants are subject to a number of important qualifications and exceptions. See "Description of the Notes—Certain Covenants."

 

 

If the notes attain investment grade ratings, then our and our restricted subsidiaries' obligation to comply with many of the covenants will be suspended while such investment grade ratings remain in effect. See "Description of the Notes—Certain Covenants—Suspension of Covenants."

 

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RISK FACTORS

        Before you tender your old notes, you should be aware that there are various risks involved in an investment in the notes, including those we describe below. You should consider carefully these risk factors together with all of the information included or referred to in this prospectus before you decide to tender your old notes in this exchange offer.

Risks Related to the Exchange Offer and the Notes

         If you fail to exchange your old notes in accordance with the terms described in this prospectus, you may not be able to sell your old notes.

        Old notes which you do not tender or we do not accept will, following the exchange offer, continue to be restricted securities. You may not offer or sell untendered old notes except pursuant to an exemption from, or in a transaction not subject to, the Securities Act and applicable state securities laws. We will issue new notes in exchange for your old notes pursuant to the exchange offer only if you satisfy the procedures and conditions described in this prospectus. These procedures and conditions include timely receipt by the exchange agent of your old notes and a properly completed and duly executed letter of transmittal.

        Because we anticipate that most holders of old notes will elect to exchange their old notes, the market for any old notes remaining after the completion of the exchange offer will likely be adversely affected. Any old notes tendered and exchanged in the exchange offer will reduce the aggregate principal amount of the old notes outstanding. Following the exchange offer, if you did not tender your old notes, you generally will not have any further registration rights and your old notes will continue to be subject to transfer restrictions. Accordingly, you may not be able to sell your old notes.

         Even if you accept the exchange offer, you may not be able to sell your new notes in the future at favorable prices.

        There has been no public market for the old notes. Despite our registration of the new notes that we are offering in the exchange offer:

        The liquidity of, and trading market for, the new notes may also be adversely affected by, among other things:

        A real or perceived economic downturn or higher interest rates could therefore cause a decline in the market price of the notes and thereby negatively impact the market for the notes. Because the notes may be thinly traded, it may be more difficult to sell and accurately value the notes. In addition, as has recently been evident in the current turmoil in the global financial markets, the present economic slowdown and the uncertainty over its breadth, depth and duration, the entire high-yield bond market can experience sudden and sharp price swings, which can be exacerbated by large or sustained sales by major investors in the notes, a high-profile default by another issuer, or a change in

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the market's psychology regarding high-yield notes. Moreover, if one of the major rating agencies were to lower its credit rating of the notes, the market price of the notes would likely decline.

         Our substantial levels of outstanding debt and letters of credit could adversely affect our financial condition and ability to fulfill our obligations.

        As of December 31, 2012, we and our guarantor subsidiaries had outstanding $1.4 billion aggregate principal amount of old notes and 5.25% senior notes due 2020, $8.0 million of capital lease obligations, no revolving loans, and $132.6 million of letters of credit. Our substantial levels of outstanding debt and letters of credit may:

        Our ability to make scheduled payments of principal or interest with respect to our debt, including the notes, any revolving loans and our capital leases, and to pay fee obligations with respect to our letters of credit, will depend on our ability to generate cash and on our future financial results. Our ability to generate cash depends on, among other things, the demand for our services, which is subject to market conditions in the environmental, energy and industrial services industries, the occurrence of events requiring major remedial projects, changes in government environmental regulation, general economic conditions, and financial, competitive, regulatory and other factors affecting our operations, many of which are beyond our control. Our operations may not generate sufficient cash flow, and future borrowings may not be available under our revolving credit facility or otherwise, in an amount sufficient to enable us to pay our debt and fee obligations respecting our letters of credit, or to fund our other liquidity needs. If we are unable to generate sufficient cash flow from operations in the future to service our debt and letter of credit fee obligations, we might be required to refinance all or a portion of our existing debt and letter of credit facilities or to obtain new or additional such facilities. However, we might not be able to obtain any such new or additional facilities on favorable terms or at all.

         Despite our substantial levels of outstanding debt and letters of credit, we could incur substantially more debt and letter of credit obligations in the future.

        Although our revolving credit agreement and the indenture governing the notes contain restrictions on the incurrence of additional indebtedness (including, for this purpose, reimbursement obligations under outstanding letters of credit), these restrictions are subject to a number of qualifications and exceptions and the additional amount of indebtedness which we might incur in the future in compliance with these restrictions could be substantial. In particular, we had available at January 17, 2013 (the effective date of our most recent amended and restated credit agreement), up to an additional approximately $267.4 million for purposes of additional borrowings and letters of credit. The indenture

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governing the notes also allows us to borrow significant amounts of money from other sources. These restrictions would also not prevent us from incurring obligations (such as operating leases) that do not constitute "indebtedness" as defined in the relevant agreements. To the extent we incur in the future additional debt and letter of credit obligations, the related risks will increase.

         The covenants in our debt agreements restrict our ability to operate our business and might lead to a default under our debt agreements.

        Our revolving credit agreement and the indenture governing our notes limit, among other things, our ability and the ability of our restricted subsidiaries to:

        As a result of these covenants, we may not be able to respond to changes in business and economic conditions and to obtain additional financing, if needed, and we may be prevented from engaging in transactions that might otherwise be beneficial to us. Our revolving credit facility requires, and our future credit facilities may require, us to maintain under certain circumstances specified financial ratios and satisfy certain financial condition tests. Our ability to meet these financial ratios and tests can be affected by events beyond our control, and we may not be able to meet those tests. The breach of any of these covenants could result in a default under our revolving credit facility or future credit facilities. Upon the occurrence of an event of default, the lenders could elect to declare all amounts outstanding under such credit facilities, including accrued interest or other obligations, to be immediately due and payable. If amounts outstanding under such credit facilities were to be accelerated, our assets might not be sufficient to repay in full that indebtedness and our other indebtedness, including the notes.

        Our revolving credit agreement and the indenture governing our notes also contain cross-default and cross-acceleration provisions. Under these provisions, a default or acceleration under one instrument governing our debt may constitute a default under our other debt instruments that contain cross-default or cross-acceleration provisions, which could result in the related debt and the debt issued under such other instruments becoming immediately due and payable. In such event, we would need to raise funds from alternative sources, which funds might not be available to us on favorable terms, on a timely basis or at all. Alternatively, such a default could require us to sell assets and otherwise curtail operations to pay our creditors. The proceeds of such a sale of assets, or curtailment of operations, might not enable us to pay all of our liabilities.

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         The notes are structurally subordinated to all debt of our subsidiaries that are not guarantors of the notes and may be effectively subordinated to certain of our and the guarantors' environmental liabilities.

        All of our domestic subsidiaries (other than domestic subsidiaries of our foreign subsidiaries) have guaranteed the notes, but our Canadian and other foreign subsidiaries are not guarantors. Furthermore, the guarantees of our domestic restricted subsidiaries are subject to customary release provisions under which, in particular, the guarantee of any of our domestic restricted subsidiaries will be released if we sell such subsidiary to an unrelated third party in accordance with the terms of the indenture which governs the notes. Noteholders will not have any claim as a creditor against our subsidiaries that are not guarantors of the notes. Accordingly, all obligations of our non-guarantor subsidiaries will have to be satisfied before any of the assets of such subsidiaries would be available for distribution, upon a liquidation or otherwise, to us or a guarantor of the notes. The indenture and our revolving credit facility allow us to incur substantial debt at our foreign subsidiaries, all of which would be structurally senior to the notes and the guaranties to the extent of the assets of those foreign subsidiaries. As of December 31, 2012, our non-guarantor subsidiaries had approximately $211.3 million of total liabilities (excluding intercompany liabilities and debt) and held approximately 37.3% of our total assets (excluding intercompany receivables and debt), and for the year ended December 31, 2012, our non-guarantor subsidiaries generated approximately 44.1% of our consolidated revenues. Furthermore, in the event of a bankruptcy or similar proceeding relating to us or the guarantors, our and their existing and future environmental liabilities may effectively rank senior in right of payment to the notes and the guarantees under certain federal and state bankruptcy and environmental laws.

         Our obligation to repay the notes will be effectively junior to substantially all of our existing and future secured debt and the existing and future secured debt of our subsidiaries.

        The notes are unsecured obligations. The notes rank effectively junior in right of payment to our secured indebtedness, including indebtedness under our revolving credit facility, which is secured by liens on substantially all of our and our domestic subsidiaries' assets and the accounts receivable of our Canadian subsidiaries, and our capital lease obligations. In the event of our bankruptcy, or the bankruptcy of our subsidiaries, holders of any of our or our subsidiaries' secured indebtedness will have claims that are prior to the claims of the noteholders to the extent of the value of the assets securing such secured debt. On December 31, 2012, we had no loans and $132.6 million of letters of credit outstanding under our revolving credit facility and $8.0 million of capital lease obligations. On January 17, 2013 (the effective date of our most recent amended and restated credit agreement), we also had $267.4 million of availability for additional loans and letters of credit under our revolving credit facility.

        If we defaulted on our obligations under any of our secured debt, our secured lenders could proceed against the collateral granted to them to secure that indebtedness. If any secured debt were to be accelerated, there can be no assurance that our assets would be sufficient to repay in full that indebtedness or our other idebt, including the notes. In addition, upon any distribution of assets pursuant to any liquidation, insolvency, dissolution, reorganization or similar proceeding, the holders of secured indebtedness will be entitled to receive payment in full from the proceeds of the collateral securing our secured indebtedness before the holders of the notes will be entitled to receive any payment with respect thereto. As a result, the holders of the notes may recover proportionally less than the holders of secured indebtedness.

         A court could subordinate or void the obligations under our subsidiaries' guarantees.

        Under the U.S. federal bankruptcy laws and comparable provisions of state fraudulent conveyance laws, a court could void obligations under the guarantees by our subsidiaries, subordinate those

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obligations to other obligations of the Guarantors or require you to repay any payments made pursuant to the guarantees, if:

The measure of insolvency for these purposes will depend upon the law of the jurisdiction being applied. Generally, however, a company will be considered insolvent if:

Moreover, regardless of solvency, a court might void the guarantees, or subordinate the guarantees, if it determined that the transaction was made with intent to hinder, delay or defraud creditors.

        Each guarantee by our subsidiaries contains a provision intended to limit the Guarantor's liability to the maximum amount that it could incur without causing the incurrence of obligations under its guarantee to be a fraudulent transfer. This provision, however, may not be effective to protect the guarantees by our subsidiaries from attack under fraudulent transfer law or may reduce the Guarantor's obligations to an amount that effectively makes the subsidiary guarantee worthless. In a recent Florida bankruptcy case, this kind of provision was found ineffective to protect the guarantees. If one or more of the guarantees were voided or subordinated, after providing for all prior claims, there might not be sufficient assets remaining to satisfy the claims of the holders of the notes.

        The indenture requires that substantially all of our future domestic subsidiaries also must guarantee the notes in the future. These considerations will also apply to any such guarantees.

         We may not have the ability to repurchase the notes upon a change of control as required by the indenture.

        Upon the occurrence of a change of control (as defined in the indenture), the indenture requires us to offer to purchase all of the then outstanding notes at 101% of their principal amount plus accrued and unpaid interest to the date of repurchase. However, upon such a change of control, we may not have sufficient funds available to repurchase all of the notes tendered pursuant to this requirement. In addition, our revolving credit facility limits, and our future credit facilities may limit, our ability to repurchase any of the notes unless certain requirements are satisfied or the lenders thereunder consent. Our failure to repurchase the notes would be a default under the indenture, which would, in turn, be a default under our revolving credit facility and, potentially, other debt. If any debt were to be accelerated, we may be unable to repay these amounts and make the required repurchase of the notes. See "Description of the Notes—Certain Covenants—Change of Control."

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         The market valuation of the notes may be exposed to substantial volatility.

        A real or perceived economic downturn or higher interest rates could cause a decline in the market price of the notes and thereby negatively impact the market for the notes. Because the notes may be thinly traded, it may be more difficult to sell and accurately value the notes. In addition, as has recently been evident in the global financial markets, the economic slowdown and the uncertainty over its breadth, depth and duration, the entire high-yield bond market can experience sudden and sharp price swings, which can be exacerbated by large or sustained sales by major investors in the notes, a high-profile default by another issuer, or a change in the market's psychology regarding high-yield notes. Moreover, if one of the major rating corporations were to lower its credit rating of the notes, the market price of the notes would likely decline.

         There is no established trading market for the notes. If an actual trading market does not develop for the notes, you may not be able to resell them quickly for the price that you paid or at all.

        There is no established trading market for the notes and we do not intend to apply for the notes to be listed on any securities exchange or to arrange for any quotation on any automated dealer quotation systems. The initial purchasers have advised us that they intend to make a market in the notes, but they are not obligated to do so. The initial purchasers may discontinue any market-making in the notes at any time, in their sole discretion. As a result, we cannot assure you as to the liquidity of any trading market for the notes. We also cannot assure you that you will be able to sell your notes at a particular time or at all, or that the prices that you receive when you sell them will be favorable. If no active trading market develops, you may not be able to resell your notes at their fair market value, or at all.

        The liquidity of, and trading market for, the notes may also be adversely affected by, among other things:

        Historically, the market for non-investment grade debt has been subject to disruptions that have caused volatility in prices of securities similar to the notes. It is possible that the market for the notes will be subject to disruptions. Any disruptions may have a negative effect on noteholders, regardless of our prospects and financial performance.

Risks Affecting Both Our Environmental Services and Energy and Industrial Services Businesses

         Our businesses are subject to operational and safety risks.

        Provision of both environmental services and energy and industrial services to our customers involves risks such as equipment defects, malfunctions and failures, and natural disasters, which could potentially result in releases of hazardous materials, injury or death of our employees, or a need to shut down or reduce operation of our facilities while remedial actions are undertaken. Our employees often work under potentially hazardous conditions. These risks expose us to potential liability for pollution and other environmental damages, personal injury, loss of life, business interruption, and property damage or destruction. We must also maintain a solid safety record in order to remain a preferred supplier to our major customers.

        While we seek to minimize our exposure to such risks through comprehensive training programs, vehicle and equipment maintenance programs and insurance, such programs and insurance may not be adequate to cover all of our potential liabilities and such insurance may not in the future be available at commercially reasonable rates. If we were to incur substantial liabilities in excess of policy limits or

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at a time when we were not able to obtain adequate liability insurance on commercially reasonable terms, our business, results of operations and financial condition could be adversely affected to a material extent. Furthermore, should our safety record deteriorate, we could be subject to a potential reduction of revenues from our major customers.

         Our businesses are subject to significant competition.

        We compete with a large number of companies, which range from large public companies to small operators that provide most of the same or similar services to those we offer. The 2008-2010 downturn in economic conditions, particularly with respect to manufacturing and oil and gas exploration and production, caused increased competition for market share. This competition resulted and could further result in lower prices and reduced gross margins for our services and negatively affect our ability to grow or sustain our current revenue and profit levels in the future.

         Our businesses are subject to numerous statutory and regulatory requirements, which may increase in the future.

        Our businesses are subject to numerous statutory and regulatory requirements, and our ability to continue to hold licenses and permits required for our businesses is subject to maintaining satisfactory compliance with such requirements. These requirements may increase in the future as a result of statutory and regulatory changes. Although we are very committed to compliance and safety, we may not, either now or in the future, be in full compliance at all times with such statutory and regulatory requirements. Consequently, we could be required to incur significant costs to maintain or improve our compliance with such requirements.

         Future conditions might require us to make substantial write-downs in our assets, which would adversely affect our balance sheet and results of operations.

        Periodically, we review our long-lived tangible and intangible assets other than goodwill for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. We also test our goodwill assets for impairment at least annually on December 31, or when events or changes in the business environment indicate that the carrying value of a reporting unit may exceed its fair value. At the end of each of 2012, 2011 and 2010, we determined that no asset write-downs were required; however, if conditions in either the environmental services or energy and industrial services businesses were to deteriorate significantly, we could determine that certain of our assets were impaired and we would then be required to write-off all or a portion of our costs for such assets. Any such significant write-offs would adversely affect our balance sheet and results of operations.

         Fluctuations in foreign currency exchange rates could affect our financial results.

        We earn revenues, pay expenses, own assets and incur liabilities in countries using currencies other than the U.S. dollar. In fiscal 2012, we recorded 44% of our revenues outside of the United States, primarily in Canada. Because our consolidated financial statements are presented in U.S. dollars, we must translate revenues, income and expenses as well as assets and liabilities into U.S. dollars at exchange rates in effect during or at the end of each reporting period. Therefore, increases or decreases in the value of the U.S. dollar against other currencies in countries where we operate will affect our results of operations and the value of balance sheet items denominated in foreign currencies. These risks are non-cash exposures. We manage these risks through normal operating and financing activities. We cannot be certain, however, that we will be successful in reducing the risks inherent in exposures to foreign currency fluctuations.

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         If we are unable to successfully integrate the businesses and operations of Safety-Kleen and our other recent and any future acquisitions and realize synergies in the expected time frame, our future results would be adversely affected.

        We have in the past significantly increased the size of our Company and the types of services we offer to our customers through acquisitions. Since December 31, 2008, we have acquired two public companies (Eveready Inc. in July 2009, and Peak Energy Services Ltd. in June 2011) and 15 private companies (including six private companies acquired during 2010, 2011 and 2012). The largest was our acquisition of Safety-Kleen, Inc., a private company, and its subsidiaries (collectively, "Safety-Kleen"), which we purchased on December 28, 2012 for approximately $1.3 billion. We anticipate that we will likely make additional acquisitions in the future.

        Much of the potential benefit of such completed and potential future acquisitions will depend on our integration of the businesses and operations of the acquired companies into our business and operations through implementation of appropriate management and financial reporting systems and controls. We may experience difficulties in such integration, and the integration process may be costly and time-consuming. Such integration will require the focused attention of both Clean Harbors' and acquired companies' management teams, including a significant commitment of their time and resources. The need for both Clean Harbors' and their managements to focus on integration matters could have a material impact on the revenues and operating results of the combined company. The success of the acquisitions will depend, in part, on the combined company's ability to realize the anticipated benefits from combining the businesses of Clean Harbors and the acquired companies through cost reductions in overhead, greater efficiencies, increased utilization of support facilities and the adoption of mutual best practices. To realize these anticipated benefits, however, the businesses of Clean Harbors and the acquired companies must be successfully combined.

        If the combined company is not able to achieve these objectives, the anticipated benefits to us of the acquisitions may not be realized fully or at all or may take longer to realize than expected. It is possible that the integration processes could result in the loss of key employees, as well as the disruption of each company's ongoing business, failure to implement the business plan for the combined company, unanticipated issues in integrating operating, logistics, information, communications and other systems, unanticipated changes in applicable laws and regulations, operating risks inherent in our business or inconsistencies in standards, controls, procedures and policies or other unanticipated issues, expenses and liabilities, any or all of which could adversely affect our ability to maintain relationships with our and the acquired companies' customers and employees or to achieve the anticipated benefits of the acquisitions.

         Our acquisitions may expose us to unknown liabilities.

        Because we have acquired, and expect to acquire, all the outstanding common shares of most of the companies we have previously acquired or may acquire in the future, including our acquisition in December 2012 of Safety-Kleen, Inc., our investments in those companies are or will be subject to all of their liabilities other than their respective debts which we paid or will pay at the time of the acquisitions. If there are unknown liabilities or other obligations, including contingent liabilities, our business could be adversely affected. We may learn additional information about the acquired companies that adversely affects us, such as unknown liabilities or other issues relating to internal controls over financial reporting, issues that could affect our ability to comply with the Sarbanes-Oxley Act or issues that could affect our ability to comply with other applicable laws.

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Risks Particularly Affecting Our Environmental Services Business

         We assumed significant environmental liabilities as part of our past acquisitions and may assume additional such liabilities as part of future acquisitions. Our financial condition and results of operations would be adversely affected if we were required to pay such liabilities more rapidly or in greater amounts than we now estimate or may estimate in connection with future acquisitions.

        We have accrued environmental liabilities valued as of December 31, 2012, at $221.5 million, substantially all of which we assumed in connection with our acquisitions of substantially all of the assets of the Chemical Services Division, or "CSD," of Safety-Kleen Corp. in 2002, Teris LLC in 2006, one of two solvent recycling facilities we purchased from Safety-Kleen Systems, Inc. in 2008 and the remaining Safety-Kleen facilities acquired as part of our acquisition of Safety-Kleen in 2012. We calculate our environmental liabilities on a present value basis in accordance with generally accepted accounting principles, which take into consideration both the amount of such liabilities and the timing when it is projected that we will be required to pay such liabilities. We anticipate our environmental liabilities will be payable over many years and that cash flows generated from our operations will generally be sufficient to fund the payment of such liabilities when required. However, events not now anticipated (such as future changes in environmental laws and regulations or their enforcement) could require that such payments be made earlier or in greater amounts than now estimated, which could adversely affect our financial condition and results of operations.

        We may also assume additional environmental liabilities as part of further acquisitions. Although we will endeavor to accurately estimate and limit environmental liabilities presented by the businesses or facilities to be acquired, some liabilities, including ones that may exist only because of the past operations of an acquired business or facility, may prove to be more difficult or costly to address than we then estimate. It is also possible that government officials responsible for enforcing environmental laws may believe an environmental liability is more significant than we then estimate, or that we will fail to identify or fully appreciate an existing liability before we become legally responsible to address it.

         If we are unable to obtain at reasonable cost the insurance, surety bonds, letters of credit, and other forms of financial assurance required for our facilities and operations, our business and results of operations would be adversely affected.

        We are required to provide substantial amounts of financial assurance to governmental agencies for closure and post-closure care of our licensed hazardous waste treatment facilities should those facilities cease operation, and we are also occasionally required to post surety, bid and performance bonds in connection with certain projects. As of December 31, 2012, our total estimated closure and post-closure costs requiring financial assurance by regulators were $343.1 million for our U.S. facilities and $22.4 million for our Canadian facilities. We have obtained all of the required financial assurance for our facilities (other than those acquired as part of our acquisition of Safety-Kleen) from a qualified insurance company, Zurich Insurance N.A., and its affiliated companies. The closure and post-closure obligations of our U.S. facilities (other than those acquired as part of our acquisition of Safety-Kleen) are insured by an insurance policy written by Steadfast Insurance Company (a unit of Zurich Insurance N.A.), which will expire in 2013. Our Canadian facilities utilize surety bonds provided through Zurich Insurance Company (Canada), which expire at various dates throughout 2013. In connection with obtaining such insurance and surety bonds, we have provided to Steadfast Insurance Company $73.5 million of letters of credit which we obtained from our lenders under our revolving credit agreement.

        As of December 31, 2012, Safety-Kleen's total estimated closure, post-closure costs and corrective action costs requiring financial assurance by regulators were $46.8 million for Safety-Kleen's U.S. facilities and $5.3 million for Safety-Kleen's Canadian facilities. Safety-Kleen has obtained all of the required U.S. financial assurance for its facilities from a qualified insurance company, XL Insurance Company, and its affiliated companies, which will expire in 2013, except for Safety-Kleen's Pennsylvania

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facilities which utilize letters of credit. In connection with obtaining such insurance for its U.S. facilities, Safety-Kleen has provided to XL Insurance Company a $5.0 million letter of credit which Safety-Kleen obtained from its lenders under its revolving credit agreement. Safety-Kleen's Canadian facilities utilize surety bonds provided through Travelers Insurance Company (Canada), which will expire in 2014, and letters of credit.

        Our ability to continue operating our facilities and conducting our other operations would be adversely affected if we became unable to obtain sufficient insurance, surety bonds, letters of credit and other forms of financial assurance at reasonable cost to meet our regulatory and other business requirements. The availability of insurance, surety bonds, letters of credit and other forms of financial assurance is affected by our insurers', sureties' and lenders' assessment of our risk and by other factors outside of our control such as general conditions in the insurance and credit markets.

         The environmental services industry in which we participate is subject to significant economic and business risks.

        Our future operating results of our environmental services business may be affected by such factors as our ability to utilize our facilities and workforce profitably in the face of intense price competition, maintain or increase market share in an industry which has experienced significant downsizing and consolidation, realize benefits from cost reduction programs, generate incremental volumes of waste to be handled through our facilities from existing and acquired 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 develop our field services business. In particular, economic downturns or recessionary conditions in North America, and increased outsourcing by North American manufacturers to plants located in countries with lower wage costs and less stringent environmental regulations, have adversely affected and may in the future adversely affect the demand for our services. Our hazardous and industrial waste management business is also cyclical to the extent that it is dependent upon a stream of waste from cyclical industries such as the chemical and petrochemical, primary metals, paper, furniture and aerospace industries. If those cyclical industries slow significantly, the business that we receive from those industries is likely to slow.

         A significant portion of our environmental services business depends upon the demand for cleanup of major spills and other remedial projects and regulatory developments over which we have no control.

        Our operations are significantly affected by the commencement and completion of cleanup of major spills and other events, customers' decisions to undertake remedial projects, 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 demand for remedial services, and changes in the myriad of governmental regulations governing our diverse operations. We do not control such factors and, as a result, our revenue and income can vary significantly from quarter to quarter, and past financial performance for certain quarters may not be a reliable indicator of future performance for comparable quarters in subsequent years. In particular, our participation in oil spill response efforts in Yellowstone, Montana generated third party revenues for the year ended December 31, 2011 of $43.6 million, which accounted for approximately 2% of total revenues, and our participation in oil spill response efforts in both the Gulf of Mexico and Michigan generated third party revenues for the year ended December 31, 2010 of $253.0 million, which accounted for approximately 15% of total revenues. We cannot expect such event revenue to reoccur in 2013.

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         The extensive environmental regulations to which we are subject may increase our costs and potential liabilities and limit our ability to expand our facilities.

        Our operations and those of others in the environmental services industry are subject to extensive federal, state, provincial and local environmental requirements in both the United States and Canada, including those relating to emissions to air, discharged wastewater, storage, treatment, transport and disposal of regulated materials and cleanup of soil and groundwater contamination. For example, any failure to comply with governmental regulations governing the transport of hazardous materials could negatively impact our ability to collect, process and ultimately dispose of hazardous wastes generated by our customers. While increasing environmental regulation often presents new business opportunities for us, it often also results in increased operating and compliance costs. Efforts to conduct our operations in compliance with all applicable laws and regulations, including environmental rules and regulations, require programs to promote compliance, such as training employees and customers, purchasing health and safety equipment, and in some cases hiring outside consultants and lawyers. Even with these programs, we and other companies in the environmental services industry are routinely faced with governmental enforcement proceedings, which can result in fines or other sanctions and require expenditures for remedial work on waste management facilities and contaminated sites. Certain of these laws impose strict and, under certain circumstances, joint and several liability on current and former owners and operators of facilities that release regulated materials or that generate those materials and arrange for their disposal or treatment at contaminated sites. Such liabilities can relate to required cleanup of releases of regulated materials and related natural resource damages.

        From time to time, we have paid fines or penalties in governmental environmental enforcement proceedings, usually involving our waste treatment, storage and disposal facilities. Although none of these fines or penalties that we have paid in the past has had a material adverse effect upon us, we might in the future be required to make substantial expenditures as a result of governmental proceedings which would have a negative impact on our earnings. Furthermore, regulators have the power to suspend or revoke permits or licenses needed for operation of our plants, equipment, and vehicles based on, among other factors, our compliance record, and customers may decide not to use a particular disposal facility or do business with us because of concerns about our compliance record. Suspension or revocation of permits or licenses would impact our operations and could have a material adverse impact on our financial results. Although we have never had any of our facilities' operating permits revoked, suspended or non-renewed involuntarily, it is possible that such an event could occur in the future.

        Some environmental laws and regulations impose liability and responsibility on present and former owners, operators or users of facilities and sites for contamination at such facilities and sites without regard to causation or knowledge of contamination. In the past, practices have resulted in releases of regulated materials at and from certain of our facilities, or the disposal of regulated materials at third party sites, which may require investigation and remediation, and potentially result in claims of personal injury, property damage and damages to natural resources. In addition, we occasionally evaluate various alternatives with respect to our facilities, including possible dispositions or closures. Investigations undertaken in connection with these activities may lead to discoveries of contamination that must be remediated, and closures of facilities might trigger compliance requirements that are not applicable to operating facilities. We are currently conducting remedial activities at certain of our facilities and paying a portion of the remediation costs at certain sites owned by third parties. While, based on available information, we believe these remedial activities will not result in a material effect upon our operations or financial condition, these activities or the discovery of previously unknown conditions could result in material costs.

        In addition to the costs of complying with environmental laws and regulations, we incur costs defending against environmental litigation brought by governmental agencies and private parties. We are now, and may in the future be, a defendant in lawsuits brought by parties alleging environmental

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damage, personal injury, and/or property damage, which may result in our payment of significant amounts of liabilities.

        Environmental and land use laws also impact our ability to expand our facilities. In addition, we are required to obtain governmental permits to operate our facilities, including all of our landfills. Even if we were to comply with all applicable environmental laws, there is no guarantee that we would be able to obtain the requisite permits from the applicable governmental authorities, and, even if we could, that any permit (and any existing permits we currently hold) will be extended or modified as needed to fit out business needs.

         Future changes in environmental regulations may require us to make significant capital expenditures.

        Changes in environmental regulations can require us to make significant capital expenditures for our facilities. For example, in 2002, the United States Environmental Protection Agency, or "EPA," promulgated Interim Standards of the Hazardous Waste Combustor Maximum Achievable Control Technology, or "MACT," under the Federal Clean Air Act Amendments. These standards established new emissions limits and operational controls on all new and existing incinerators, cement kilns and light-weight aggregate kilns that burn hazardous waste-derived fuels. We have spent approximately $29.6 million since September 7, 2002 in order to bring our Deer Park, Texas and Aragonite, Utah incineration facilities, which we then acquired as part of the CSD assets, and our Kimball, Nebraska facility into compliance with the MACT regulations. Prior to our acquisition in August 2006 of our additional incineration facility in El Dorado, Arkansas, as part of our purchase of all the membership interests in Teris LLC, Teris had spent in excess of $30.0 million in order to bring that facility into compliance with the MACT standards. Future environmental regulations could cause us to make significant additional capital expenditures and adversely affect our results of operations and cash flow.

         If our assumptions relating to expansion of our landfills should prove inaccurate, our results of operations and cash flow could be adversely affected.

        When we include expansion airspace in our calculation of available airspace, we adjust our landfill liabilities to the present value of projected costs for cell closure and landfill closure and post-closure. It is possible that any of our estimates or assumptions could ultimately turn out to be significantly different from actual results. In some cases we may be unsuccessful in obtaining an expansion permit or we may determine that an expansion permit that we previously thought was probable has become unlikely. To the extent that such estimates, or the assumptions used to make those estimates, prove to be significantly different than actual results, or our belief that we will receive an expansion permit changes adversely in a significant manner, the landfill assets, including the assets incurred in the pursuit of the expansion, may be subject to impairment testing and lower prospective profitability may result due to increased interest accretion and depreciation or asset impairments related to the removal of previously included expansion airspace. In addition, if our assumptions concerning the expansion airspace should prove inaccurate, certain of our cash expenditures for closure of landfills could be accelerated and adversely affect our results of operations and cash flow.

Risks Particularly Affecting Our Energy and Industrial Services Business

         A large portion of our energy and industrial services business is dependent on the oil and gas industry in Western Canada, and declines in oil and gas exploration and production in that region could adversely affect our business.

        Our energy and industrial services business generates well over 50% of its total revenues from customers in the oil and gas industry operating in Western Canada, although a majority of the services we provide to such customers relate to industrial maintenance and oil and gas production and refining which are less volatile than oil and gas exploration. We also provide significant services to customers in the oil and gas industry operating in the United States or internationally and to customers in other industries such as forestry, mining and manufacturing. However, a major portion of the total revenues of our energy and industrial services business remains dependent on customers in the oil and gas industry operating in Western Canada.

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        Accordingly, declines in the general level of oil and gas exploration, production and refining in Western Canada could potentially have significant adverse effects on our total revenues and profitability. Such declines occurred in 2008-2009 and could potentially occur in the future if reductions in the commodity prices of oil and gas result in reduced oil and gas exploration, production and refining. Such future declines could also be triggered by technological and regulatory changes, such as those affecting the availability and cost of alternative energy sources, and other changes in industry and worldwide economic and political conditions.

        Many of our major customers in the oil and gas industry conduct a significant portion of their operations in the Alberta oil sands. The Alberta oil sands contain large oil deposits, but extraction may involve significantly greater cost and environmental concerns than conventional drilling. While we believe our major involvement in the oil sands region will provide significant future growth opportunities, such involvement also increases the risk that our business will be adversely affected if future economic activity in the Alberta oil sands were to decline considerably. Major factors that could cause such a decline might include a prolonged reduction in the commodity price of oil, future changes in environmental restrictions and regulations, and technological and regulatory changes relating to production of oil from the oil sands. Due to the downturn in worldwide economic conditions and in the commodity price of oil and gas which occurred in 2008-2009, certain of our customers have delayed a number of large projects in the planning and early development phases within the oil sands region. In addition, customers are revisiting their operating budgets and challenging their suppliers to reduce costs and achieve better efficiencies in their work programs.

         Our energy and industrial services business is subject to workforce availability.

        Our ability to provide high quality services to our customers is dependent upon our ability to attract and retain well-trained, experienced employees. Prior to 2008, the oil and gas services industry in Western Canada experienced for several years high demand for, and a corresponding shortage of, quality employees resulting, in particular, in employment of a significant number of employees from Eastern Canada on a temporary basis. Although the 2008-2009 downturn in the oil and gas industry increased the pool of quality employees available to meet our customer commitments, the subsequent improvement during 2010 - 2011 of conditions in the oil and gas industry has increased, and any such improvement which may occur in the future would likely increase, competition for experienced employees.

Additional Risks Relating to Our Recent Acquisition of Safety-Kleen

        In addition to the risks described above which are applicable to our environmental services and energy and industrial services businesses (as those businesses were expanded by our acquisition of Safety-Kleen on December 28, 2012), our acquisition of Safety-Kleen resulted in our becoming subject to certain additional risks, including in the particular the following:

         Safety-Kleen's revenues are relatively concentrated among a small number of its largest customers.

        In 2012, Safety-Kleen's ten largest customers accounted for approximately 24% of its total revenues and its largest customer accounted for approximately 7% of its total revenues. If one or more of Safety-Kleen's significant customers were to cease doing business with Safety-Kleen or significantly reduce or delay the purchase of products or services from it, our business, financial condition and results of operations could be materially and adversely affected. In addition, Safety-Kleen is subject to credit risk associated with the concentration of its accounts receivable from its customers. None of Safety-Kleen's accounts receivable are covered by collateral or credit insurance. If one or more of its significant customers or if any material portion of Safety-Kleen's other customers were to fail to pay Safety-Kleen on a timely basis, our business, financial condition and results of operations could be

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materially and adversely affected. Additionally, future consolidation of Safety-Kleen's customers or additional concentration of market share among its customers may increase its credit risk.

         Fluctuations in oil prices may have a negative effect on Safety-Kleen's future results of operations derived from its oil re-refining and recycling business.

        A significant portion of Safety-Kleen's business involves collecting used oil from certain of its customers, re-refining a portion of such used oil into base and blended lubricating oils, and then selling both such re-refined oil and the excess recycled oil which Safety-Kleen does not currently have the capacity to re-refine, or "RFO," to other customers. The prices at which Safety-Kleen sells its re-refined oil and RFO are affected by changes in the reported spot market prices of oil. If applicable rates increase or decrease, Safety-Kleen typically will charge a higher or lower corresponding price for its re-refined oil and RFO. The price at which Safety-Kleen sells its re-refined oil and RFO is affected by changes in certain indices measuring changes in the price of heavy fuel oil, with increases and decreases in the indices typically translating into a higher or lower price for Safety-Kleen's RFO. The cost to collect used oil, including the amounts Safety-Kleen must pay to obtain used oil and the fuel costs of its oil collection fleet, typically also increases or decreases when the relevant indices increase or decrease. However, even though the prices Safety-Kleen can charge for its re-refined oil and RFO and the costs to collect and re-refine used oil and process RFO typically increase and decrease together, there is no assurance that when Safety-Kleen's costs to collect and re-refine used oil and process RFO increase it will be able to increase the prices it charges for its re-refined oil and RFO to cover such increased costs or that the costs to collect and re-refine used oil and process RFO will decline when the prices it can charge for re-refined oil and RFO decline. These risks are exacerbated when there are rapid fluctuations in these oil indices.

        The price at which Safety-Kleen purchases used oil from its large customers through its oil collection services is generally fixed for a period of time by contract, in some cases for up to 90 days. Because the price Safety-Kleen pays for a majority of its used oil is fixed for a period of time and it can take up to eight weeks to transport, re-refine and blend collected used oil into Safety-Kleen's finished blended lubricating oil products, Safety-Kleen typically experiences margin contraction during periods when the applicable index rates decline. If the index rates decline rapidly, Safety-Kleen may be locked into paying higher than market prices for used oil during these contracted periods while the prices it can charge for its finished oil products decline. If the prices Safety-Kleen charges for its finished oil products and the costs to collect and re-refine used oil and process RFO do not move together or in similar magnitudes, Safety-Kleen's profitability may be materially and negatively impacted.

        Safety-Kleen has entered into several commodity derivatives since 2011, which are comprised of cashless collar contracts related to crude oil prices, in each case, where Safety-Kleen sold a call option to a bank and then purchased a put option from the same bank, in order to manage against significant fluctuations in crude oil prices, which are closely correlated with indices discussed above. However, these commodity derivatives are designed to only mitigate Safety-Kleen's exposure to declines in these oil indices below a price floor, and Safety-Kleen will not be protected and its profitability may be materially and negatively impacted by declines above the price floor. In addition, these commodity derivatives will limit Safety-Kleen's potential benefit when these oil indices increase above a price cap because Safety-Kleen will be required to make payments in that circumstance. Furthermore, Safety-Kleen's current commodity derivatives expire at various intervals, and there is no assurance that we will be able to enter into commodity derivatives in the future with acceptable terms.

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         Environmental laws and regulations have adversely affected and may adversely affect Safety-Kleen's parts cleaning and other solvent related services.

        In connection with its parts cleaning and other solvent related services, Safety-Kleen has been subject to fines and certain orders requiring it to take environmental remedial action. In fiscal years 2012 and 2011, Safety-Kleen paid a total of approximately $365,000 and $190,000, respectively, for such fines, including fines arising in previous years. In 2009, Safety-Kleen recorded as an expense a $15.0 million settlement with the South Coast Air Quality Management District, or "SCAQMD," in southern California and other regulatory agencies for alleged civil violations of SCAQMD Rule 1171, which prohibits the use of solvent, except for certain exempt uses, in the district. Safety-Kleen paid this settlement and is currently in compliance with SCAQMD Rule 1171. However, in the future, Safety-Kleen may be subject to monetary fines, civil or criminal penalties, remediation, cleanup or stop orders, injunctions, orders to cease or suspend certain practices or denial of permits required for the operation of its facilities. The outcome of any proceeding and associated costs and expenses could have a material adverse impact on Safety-Kleen's financial condition and results of operations.

        Recent and potential changes in environmental laws and regulations may also adversely affect in the future Safety-Kleen's parts cleaning and other solvent related services. In particular, there has been a regulatory-driven shift away from solvents having higher volatile organic compounds, or "VOC," as evidenced by the recent move of the Ozone Transport Commission representing several states to reduce the VOC limits for various products, including solvent used for parts cleaning or with paint-gun cleaning equipment. Interpretation or enforcement of existing laws and regulations, or the adoption of new laws and regulations, may require Safety-Kleen to modify or curtail its operations or replace or upgrade its facilities or equipment at substantial costs, which we may not be able to pass on to our customers, and we may choose to indemnify our customers from any fines or penalties they may incur as a result of these new laws and regulations. On the other hand, in some cases if new laws and regulations are less stringent, Safety-Kleen's customers or competitors may be able to manage waste more effectively themselves, which could decrease the need for Safety-Kleen's services or increase competition, which could adversely affect Safety-Kleen's results of operations.

         Safety-Kleen is subject to existing and potential product liability lawsuits.

        Safety-Kleen has been named as a defendant in various product liability lawsuits in various courts and jurisdictions throughout the United States from time to time. As of December 31, 2012, Safety-Kleen was involved in approximately 64 proceedings (including cases which have been settled but not formally dismissed) wherein persons claimed personal injury resulting from the use of its parts cleaning equipment or cleaning products. These proceedings typically involve allegations that the solvent used in Safety-Kleen's parts cleaning equipment contains contaminants or that Safety-Kleen's recycling process does not effectively remove the contaminants that become entrained in the solvent during their use. In addition, certain claimants assert that Safety-Kleen failed to warn adequately the product user of potential risks, including a historic failure to warn that solvent contains trace amounts of toxic or hazardous substances such as benzene. Although Safety-Kleen maintains insurance that we believe will provide coverage for these claims (over amounts accrued for self-insured retentions and deductibles in certain limited cases), this insurance may not provide coverage for potential awards of punitive damages against Safety-Kleen. Although Safety-Kleen vigorously defends itself and the safety of its products against all of these claims (and we intend to continue defending these claims), these matters are subject to many uncertainties and outcomes are not predictable with assurance. Safety-Kleen may also be named in similar, additional lawsuits in the future, including claims for which insurance coverage may not be available. If one or more of these claims is decided unfavorably against Safety-Kleen and the plaintiffs are awarded punitive damages, or if the claim is one for which insurance coverage may not be available, our financial condition and results of operations could be materially and

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adversely affected. Additionally, if one or more of these claims were decided unfavorably against Safety-Kleen, such outcome may encourage even more lawsuits against us.

         Safety-Kleen is dependent on third parties for the manufacturing of the majority of its equipment.

        Safety-Kleen does not manufacture the majority of the equipment, including parts washers, that Safety-Kleen places at customer sites. Accordingly, Safety-Kleen relies on a limited number of third party suppliers for manufacturing this equipment. The supply of third party equipment could be interrupted or halted by a termination of Safety-Kleen's relationships, a failure of quality control or other operational problems at such suppliers or a significant decline in their financial condition. If Safety-Kleen is not able to retain these providers or obtain its requests from these providers, Safety-Kleen may not be able to obtain alternate providers in a timely manner or on economically attractive terms, and as a result, Safety-Kleen may not be able to compete successfully for new business, complete existing engagements profitably or retain its existing customers. Additionally, if Safety-Kleen's third party suppliers provide it with defective equipment, it may be subject to reputational damage or product liability claims which may negatively impact its reputation, financial condition and results of operations. Further, Safety-Kleen generally does not have long term contracts with its third party suppliers, and as a result these suppliers may increase the price of the equipment they provide to Safety-Kleen, which may hurt Safety-Kleen's results of operations.

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USE OF PROCEEDS

        We will not receive any proceeds from the exchange offer. In consideration for issuing the new notes, we will receive old notes from you in like principal amount. The old notes surrendered in exchange for the new notes will be retired and canceled and cannot be reissued. Accordingly, issuance of the new notes will not result in any change in our indebtedness.


RATIO OF EARNINGS TO FIXED CHARGES

        The following table sets forth our consolidated ratios of earnings to fixed charges for the periods shown.

 
  Year Ended December 31,  
 
  2012   2011   2010   2009   2008  

Ratio of earnings to fixed charges(1)

    3.3X     5.0x     6.2x     3.6x     6.0x  

(1)
For purposes of calculating the earnings to fixed charges, earnings consist of income from operations before income tax plus fixed charges. Fixed charges consist of interest expense, including capitalized interest, amortization of debt issuance costs and a portion of the operating lease rental expense deemed to be representative of the interest factor.

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CAPITALIZATION

        The following table sets forth our consolidated cash and cash equivalents, long-term debt (including current portion), and stockholders' equity as of December 31, 2012. This table should be read in conjunction with "Use of Proceeds," "Selected Historical Consolidated Financial Information," and "Description of Other Indebtedness" elsewhere in this prospectus and our historical financial statements and the notes thereto incorporated by reference into this prospectus.

 
  December 31, 2012  
 
  (in thousands)
 

Cash and cash equivalents

  $ 229,836  
       

Long-term debt, including current portion:

       

Revolving credit facility(1)

  $  

Capital lease obligations

    7,971  

Senior Notes due 2020

    800,000  

Senior Notes due 2021

    600,000  
       

Total long-term debt, including current portion(2)

    1,407,971  
       

Stockholders' equity:

       

Common stock, $.01 par value;

       

Authorized 80,000,000 shares; issued and outstanding 60,385,453 shares

    604  

Shares held under employee participation plan

    (469 )

Additional paid-in capital

    880,979  

Accumulated other comprehensive income

    49,632  

Accumulated earnings

    501,326  
       

Total stockholders' equity

    1,432,072  
       

Total capitalization

  $ 2,840,043  
       

(1)
We have a revolving credit facility secured by liens on substantially all of our and our domestic subsidiaries' assets and the accounts receivable of our Canadian subsidiaries and under which our and we and one of our Canadian subsidiaries have the right to borrow and obtain letters of credit for a combined maximum of up to $400.0 million.

(2)
Actual and as adjusted long-term debt excludes $132.6 million of letters of credit which were outstanding on December 31, 2012 under our revolving credit facility (which has a combined sub-limit of $325.0 million for letters of credit).

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SELECTED HISTORICAL CONSOLIDATED FINANCIAL INFORMATION

        The following selected consolidated financial information for the three years ended December 31, 2012 and the consolidated balance sheet information at December 31, 2012 and 2011 have been derived from our audited financial statements incorporated by reference in this prospectus. This data should be reviewed in conjunction with "Management's Discussion and Analysis of Financial Condition and Results of Operations" and our audited financial statements and the notes thereto incorporated by reference in this prospectus. We have derived the consolidated financial information for the years ended December 31, 2009 and 2008, and the consolidated balance sheet information at December 31, 2010, 2009 and 2008, from our audited financial statements not incorporated or included herein.

 
  For the Year Ended December 31,  
 
  2012(1)   2011   2010   2009   2008  
 
  (in thousands except per share amounts)
 

Income Statement Data:

                               

Revenues

  $ 2,187,908   $ 1,984,136   $ 1,731,244   $ 1,074,220   $ 1,030,713  

Cost of revenues (exclusive of items shown separately below)

    1,540,621     1,379,991     1,210,740     753,483     707,820  

Selling, general and administrative expenses

    273,520     254,137     205,812     163,157     159,674  

Accretion of environmental liabilities

    9,917     9,680     10,307     10,617     10,776  

Depreciation and amortization

    161,646     122,663     92,473     64,898     44,471  
                       

Income from operations

    202,204     217,665     211,912     82,065     107,972  

Other (expense) income

    (802 )   6,402     2,795     259     (119 )

Loss on early extinguishment of debt

    (26,385 )       (2,294 )   (4,853 )   (5,473 )

Interest expense, net

    (47,287 )   (39,389 )   (27,936 )   (15,999 )   (8,403 )
                       

Income from continuing operations before (benefit) provision for income taxes

    127,730     184,678     184,477     61,472     93,977  

(Benefit) provision for income taxes(2)

    (1,944 )   57,426     56,756     26,225     36,491  
                       

Income from continuing operations

    129,674     127,252     127,721     35,247     57,486  

Income from discontinued operations, net of tax

            2,794     1,439      
                       

Net income

  $ 129,674   $ 127,252   $ 130,515   $ 36,686   $ 57,486  
                       

Earnings per share:(3)

                               

Basic

  $ 2.41   $ 2.40   $ 2.48   $ 0.74   $ 1.28  
                       

Diluted

  $ 2.40   $ 2.39   $ 2.47   $ 0.74   $ 1.26  
                       

Cash Flow Data:

                               

Net cash from operating activities

  $ 324,365   $ 179,531   $ 224,108   $ 93,270   $ 109,590  

Net cash from investing activities

    (1,572,636 )   (480,181 )   (125,687 )   (118,391 )   (84,515 )

Net cash from financing activities

    1,217,868     258,740     (32,230 )   3,584     116,795  

Other Financial Data:

                               

Adjusted EBITDA(4)

  $ 373,767   $ 350,008   $ 314,692   $ 157,580   $ 163,219  

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  At December 31,  
 
  2012(1)   2011   2010   2009   2008  
 
  (in thousands)
 

Balance Sheet Data:

                               

Working capital

  $ 517,741   $ 510,126   $ 446,253   $ 386,930   $ 307,679  

Goodwill

    593,771     122,392     60,252     56,085     24,578  

Total assets

    3,825,806     2,085,803     1,602,475     1,401,068     898,336  

Long-term obligations (including current portion)(5)

    1,407,971     538,888     278,800     301,271     53,630  

Stockholders' equity(3)

    1,432,072     900,987     780,827     613,825     429,045  

(1)
Includes Safety-Kleen which was acquired on December 28, 2012—see Note 3, "Business Combinations," to the consolidated financial statements. Due to the immateriality of the amounts, no revenue, expense, income or loss of Safety-Kleen is included in our results of operations for the year ended December 31, 2012.

(2)
For fiscal year 2012, the benefit includes a decrease in unrecognized tax benefits of $52.4 million as a result of the expiration of statute of limitation periods related to an historical Canadian debt restructure. For fiscal year 2011, the provision includes a decrease in unrecognized tax benefits of $6.5 million of which $5.7 million was due to expiring statute of limitation periods related to an historical Canadian business combination and the remaining $0.8 million was related to the conclusion of examinations with state taxing authorities, the expiration of various state statutes of limitation periods, and a change in estimate of a previous liability. For fiscal year 2010, the provision includes a decrease in unrecognized tax benefits of $14.3 million. Approximately $13.2 million was due to the expiration of statute of limitation periods related to an historical Canadian business combination and the remaining $1.1 million was related to the conclusion of examinations with state taxing authorities and the expiration of various state statute of limitation periods.

(3)
We issued: (i) 5.75 million (stock-split adjusted) shares of common stock in April 2008 upon the closing of a public offering for aggregate net proceeds (after deducting the underwriters' discount and offering expenses payable by us) of $173.5 million; (ii) 4.8 million (stock-split adjusted) shares of common stock in July 2009 to the former holders of Eveready common shares as partial consideration for our acquisition of Eveready; and (iii) 6.9 million shares of our common stock in December 2012 upon the closing of a public offering for aggregate net proceeds (after deducting the underwriters' discount and offering expenses payable by us) of $368.0 million.

Basic and diluted earnings per share based on income from continuing operations for 2010 were $2.43 and $2.42 per share, respectively, and for 2009, they were both $0.71 per share.

(4)
For all periods presented, "Adjusted EBITDA" consists of net income plus accretion of environmental liabilities, depreciation and amortization, net interest expense, and provision for income taxes. We also exclude loss on early extinguishment of debt, other (income) expense, and income from discontinued operations, net of tax as these amounts are not considered part of usual business operations. See below for a reconciliation of Adjusted EBITDA to both net income and net cash provided by operating activities for the specified periods. Our management considers Adjusted EBITDA to be a measurement of performance which provides useful information to both management and investors. Adjusted EBITDA should not be considered an alternative to net income or other measurements under generally accepted accounting principles ("GAAP"). Because Adjusted EBITDA is not calculated identically by all companies, our measurements of Adjusted EBITDA may not be comparable to similarly titled measures reported by other companies.

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  Year Ended December 31,  
 
  2012   2011   2010   2009   2008  

Net income

  $ 129,674   $ 127,252   $ 130,515   $ 36,686   $ 57,486  

Accretion of environmental liabilities

    9,917     9,680     10,307     10,617     10,776  

Depreciation and amortization

    161,646     122,663     92,473     64,898     44,471  

Other expense (income)

    802     (6,402 )   (2,795 )   (259 )   119  

Loss on early extinguishment of debt

    26,385         2,294     4,853     5,473  

Interest expense, net

    47,287     39,389     27,936     15,999     8,403  

(Benefit) provision for income taxes

    (1,944 )   57,426     56,756     26,225     36,491  

Income from discontinued operations, net of tax

            (2,794 )   (1,439 )    
                       

Adjusted EBITDA

  $ 373,767   $ 350,008   $ 314,692   $ 157,580   $ 163,219  
                       

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  Year Ended December 31,  
 
  2012   2011   2010   2009   2008  

Adjusted EBITDA

  $ 373,767   $ 350,008   $ 314,692   $ 157,580   $ 163,219  

Interest expense, net

    (47,287 )   (39,389 )   (27,936 )   (15,999 )   (8,403 )

Benefit (provision) for income taxes

    1,944     (57,426 )   (56,756 )   (26,225 )   (36,491 )

Income from discontinued operations, net of tax

            2,794     1,439      

Allowance for doubtful accounts

    1,213     759     1,043     1,006     267  

Amortization of deferred financing costs and debt discount

    1,793     1,572     2,921     1,997     1,915  

Change in environmental liability estimates

    (8,458 )   (2,840 )   (8,328 )   (4,657 )   (2,047 )

Deferred income taxes

    34,163     37,836     4,919     4,830     3,197  

Stock-based compensation

    7,494     8,164     7,219     968     3,565  

Excess tax benefit of stock-based compensation

    (2,556 )   (3,352 )   (1,751 )   (481 )   (3,504 )

Income tax benefits related to stock option exercises

    2,546     3,347     1,739     474     3,534  

Eminent domain compensation

        3,354              

Gain on sale of businesses

            (2,678 )        

Prepayment penalty on early extinguishment of debt

    (21,044 )       (900 )   (3,002 )   (3,552 )

Environmental expenditures

    (11,191 )   (11,319 )   (10,236 )   (8,617 )   (14,268 )

Changes in assets and liabilities, net of acquisitions

                               

Accounts receivable

    54,373     (65,210 )   (49,411 )   (11,429 )   17,221  

Inventories and supplies

    (12,871 )   (11,696 )   (3,129 )   (14,512 )   (4,542 )

Other current assets

    9,334     (25,065 )   (7,421 )   15,605     10,071  

Accounts payable

    5,930     (8,116 )   38,553     5,050     (17,763 )

Other current liabilities

    (64,785 )   (1,096 )   18,774     (10,757 )   (2,829 )
                       

Net cash from operating activities

  $ 324,365   $ 179,531   $ 224,108   $ 93,270   $ 109,590  
                       
(5)
Long-term obligations (including current portion) include borrowings under our current and former revolving credit facilities and capital lease obligations.

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DESCRIPTION OF OTHER INDEBTEDNESS

Revolving Credit Facility

        We have a revolving credit facility under which Bank of America, N.A. ("BofA") is the administrative and collateral agent (the "Agent") for the lenders and BofA and JP Morgan Chase Bank, N.A., are the issuing banks for letters of credit issued under the facility. Under the facility, as amended and restated effective January 17, 2013, Clean Harbors, Inc. (the "Company") has the right to borrow and obtain letters of credit for a combined maximum of up to $300.0 million (with a sub-limit of $250.0 million for letters of credit) and one of the Company's Canadian subsidiaries (the "Canadian Borrower") has the right to obtain up to $100.0 million of revolving loans and letters of credit (with a $75.0 million sub-limit for letters of credit). Availability under the U.S. line is subject to a borrowing base comprised of 85% of the eligible accounts receivable of the Company and its U.S. subsidiaries plus 100% of cash deposited in a controlled account with the Agent, and availability under the Canadian line is subject to a borrowing base comprised of 85% of the eligible accounts receivable of the Canadian Borrower and the Company's other Canadian subsidiaries plus 100% of cash deposited in a controlled account with the Agent's Canadian affiliate. The facility will expire on January 17, 2018.

        Borrowings under the revolving credit facility will bear interest at a rate of, at the Company's option, either (i) LIBOR plus an applicable margin ranging from 1.50% to 2.00% per annum based primarily on the level of the Company's consolidated fixed charge coverage ratio for the most recently completed four fiscal quarter measurement period or (ii) BofA's base rate plus an applicable margin ranging from 0.50% to 1.00% per annum based primarily on such consolidated fixed charge coverage ratio. There is also an unused line fee, calculated on the then unused portion of the lenders' $400.0 million maximum commitments, ranging from 0.25% to 0.375% per annum of the unused commitment. For outstanding letters of credit, the Company pays to the lenders a fee equal to the then applicable LIBOR margin described above, and to the issuing banks a standard fronting fee and customary fees and charges in connection with all amendments, extensions, draws and other actions with respect to letters of credit.

        The Company's obligations under the revolving credit facility (including revolving loans and reimbursement obligations for outstanding letters of credit) are guaranteed by substantially all of the Company's U.S. subsidiaries and secured by a lien on substantially all of the Company's and its U.S. subsidiaries' assets. The Canadian Borrower's obligations under the facility are guaranteed by substantially all of the Company's other Canadian subsidiaries and secured by a lien on the accounts receivable of the Canadian Borrower and the other Canadian subsidiaries. The Company and its U.S. subsidiaries guarantee the obligations of the Canadian Borrower under the facility, but the Canadian Borrower and the other Canadian subsidiaries do not guarantee and are not otherwise responsible for the obligations of the Company and its U.S. subsidiaries.

        Under the revolving credit facility, the Agent would have the right to exercise dominion over the Company's and its subsidiaries' cash (to the extent such cash represents the proceeds of accounts receivable) if the Company's "Liquidity" is less than the greater of (i) $50.0 million and (ii) 12.5% of the aggregate commitments of the lenders under the facility. Liquidity is defined as the sum of (a) the Company's then U.S. availability under the facility and (b) the lesser of (i) the Canadian Borrower's then availability under the facility and (ii) 60% of the lenders' aggregate commitments to the Canadian Borrower. If Liquidity should be less than the greater of (i) $40.0 million and (ii) 10% of the aggregate commitments, the Company would be required to thereafter maintain a consolidated fixed charge coverage ratio of at least 1.00 to 1.00. In addition, the facility contains covenants which will restrict the Company's future ability to make certain types of acquisitions, debt prepayments, investments and distributions if Liquidity (on a pro forma basis after giving effect to such events) is less than between 15% and 35% (depending upon the type of restricted event) of the lenders' aggregate commitments or, if the Company's consolidated fixed charge coverage ratio for the most recently completed four fiscal

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quarters is at least 1.00 (or, in certain cases, 1.10) to 1.00, less than 15% or 25% (depending upon the type of restricted event) of the aggregate commitments.

2020 Notes

        We issued on July 30, 2012 and now have outstanding $800.0 million aggregate principal amount of 5.25% unsecured senior notes due 2020 (the "2020 notes"). The 2020 notes mature on August 1, 2020 and bear interest at a rate of 5.25% per annum, computed on the basis of a 360-day year composed of twelve 30-day months and payable semi-annually on August 1 and February 1 of each year, commencing on February 1, 2013. We may redeem some or all of the 2020 notes at any time on or after August 1, 2016 upon not less than 30 nor more than 60 days' notice, at the following redemption prices (expressed as percentages of the principal amount) if redeemed during the twelve-month period commencing on August 1 of the year set forth below, plus, in each case, accrued and unpaid interest, if any, to the date of redemption:

Year
  Percentage  

2016

    102.625 %

2017

    101.313 %

2018 and thereafter

    100.000 %

        At any time, or from time to time, prior to August 1, 2015, we may also redeem up to 35% of the aggregate principal amount of all 2020 notes issued under the indenture at a redemption price of 105.250% of the principal amount, plus any accrued and unpaid interest, using proceeds from certain equity offerings. At any time prior to August 1, 2016, we may also redeem some or all of the 5.25% notes at a redemption price of 100% of the principal amount plus a make-whole premium and any accrued and unpaid interest. Holders may require us to repurchase the 2020 notes at a purchase price equal to 101% of the principal amount, plus any accrued and unpaid interest, upon a change of control of our Company. The 2020 notes are guaranteed by substantially all our current and future domestic restricted subsidiaries.

        The 2020 notes and the related indenture contain various customary covenants and are our and the guarantors' senior unsecured obligations ranking equally with our and the guarantors' existing and future senior unsecured obligations and senior to any future indebtedness that is expressly subordinated to the 2020 notes and the guarantees. The 2020 notes and the guarantees rank effectively junior in right of payment to our subsidiaries' secured indebtedness (including loans and reimbursement obligations in respect of outstanding letters of credit) under our revolving credit facility and capital lease obligations to the extent of the value of the assets securing such secured indebtedness. The 2020 notes are not guaranteed by our Canadian or other foreign subsidiaries, and the 2020 notes are structurally subordinated to all indebtedness and other liabilities, including trade payables, of our subsidiaries that are not guarantors of the 2020 notes.

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THE EXCHANGE OFFER

Purpose and Effect of Exchange Offer; Registration Rights

        We sold the $600.0 million principal amount of old notes on December 7, 2012 in an unregistered private placement to Goldman, Sachs & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated, and Credit Suisse (USA) LLC, as the initial purchasers. The initial purchasers then resold the old notes to investors under an offering circular dated November 28, 2012 in reliance on Rule 144A and Regulation S under the Securities Act.

        As part of this private placement, we entered into a registration rights agreement with the initial purchasers on December 7, 2012. Under the registration rights agreement, we agreed to file the registration statement of which this prospectus is a part. We also agreed:

        Under the circumstances described below, we also agreed to use our commercially reasonable efforts to cause the SEC to declare effective a shelf registration statement with respect to the resale of the old notes. We agreed to keep the shelf registration statement effective until the earlier of the date two years after the shelf registration statement is declared effective under the Securities Act or the date on which there are no longer any old notes outstanding. These circumstances include:

        If we fail to comply with specified obligations under the registration rights agreement, we must pay certain additional interest to the holders of the notes until we have cured all of such failures.

        By participating in the exchange offer, holders of the old notes will receive new notes that are freely tradeable and not subject to restrictions on transfer, subject to the exceptions described below under "Resale of New Notes."

Resale of New Notes

        We believe that the new notes issued in exchange for the old notes may be offered for resale, resold and otherwise transferred by any new note holder without compliance with the registration and

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prospectus delivery provisions of the Securities Act if the conditions set forth below are met. We base this belief solely on interpretations of the federal securities laws by the SEC set forth in several no-action letters issued to third parties unrelated to us. A no-action letter is a letter from the SEC staff responding to a request for its views as to whether a particular matter complies with the federal securities laws or whether the SEC would refer the matter to the SEC's enforcement division for action. The relevant no-action letters include the Exxon Capital Holdings Corporation letter, which was made available by the SEC on May 13, 1988, the Morgan Stanley & Co. Incorporated letter which was made available by the SEC on June 5, 1991, the K-111 Communications Corporation letter, which was made available by the SEC on May 14, 1993, and the Shearman & Sterling letter, which was made available by the SEC on July 2, 1993. We have not obtained, and do not intend to obtain, our own no-action letter from the SEC staff regarding the resale of the new notes. Instead, holders will be relying on the no-action letters that the SEC staff has issued to third parties in circumstances that we believe are similar to ours. Based on these no-action letters, the following conditions must be met:

        Each holder of old notes that wishes to exchange old notes for new notes in the exchange offer must represent to us that it satisfies all of the above listed conditions. Any holder who tenders in the exchange offer who does not satisfy all of the above listed conditions:

        The SEC considers broker-dealers that acquired old notes directly from us, but not as a result of market-making activities or other trading activities, to be making a distribution of the new notes if they participate in the exchange offer. Consequently, any such holders must comply with the registration and prospectus delivery requirements of the Securities Act in connection with a resale of the new notes.

        Each broker-dealer that receives new notes for its own account in exchange for old notes acquired by such broker-dealer as a result of market-making activities or other trading activities must deliver a prospectus in connection with a resale of the new notes and provide us in the letter of transmittal with a signed acknowledgement of this obligation. The letter of transmittal states that by so acknowledging and delivering a prospectus, a broker-dealer will not be deemed to admit that it is an "underwriter" within the meaning of the Securities Act. A broker-dealer may use this prospectus, as amended or supplemented from time to time, in connection with resales of new notes received in exchange for old notes where the broker-dealer acquired the old notes as a result of market-making activities or other trading activities. We have agreed that for a period of 180 days after the expiration date of the exchange offer, we will make this prospectus available to broker-dealers for use in connection with any such resale of the new notes. See "Plan of Distribution."

        Except as described in the prior paragraph, holders may not use this prospectus for an offer to resell, resale or other retransfer of new notes. We are not making the exchange offer to, nor will we accept tenders for exchange from, holders of old notes in any jurisdiction in which the exchange offer or the acceptance of it would not be in compliance with the securities or blue sky laws of that jurisdiction.

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Terms of the Exchange

        Upon the terms and subject to the conditions set forth in this prospectus and the accompanying letter of transmittal, which we refer to together in this prospectus as the "exchange offer," we will accept any and all old notes validly tendered and not withdrawn prior to 5:00 p.m., New York City time, on the expiration date described below under "Expiration Date; Extensions; Amendments." The date of acceptance for exchange of the old notes, and completion of the exchange offer, is the exchange date, which will be the first business day following the expiration date, unless extended as described in this prospectus. We will issue, on or promptly after the exchange date, an aggregate principal amount of up to $600.0 million of new notes for a like principal amount of outstanding old notes tendered and accepted in connection with the exchange offer. The new notes issued in connection with the exchange offer will be delivered promptly following the exchange date. Holders may tender some or all of their old notes in connection with the exchange offer, but only in denominations of $2,000 and integral multiples of $1,000. The exchange offer is not conditioned upon any minimum amount of old notes being tendered for exchange.

        The terms of the new notes are identical in all material respects to the terms of the old notes, except that:

        The new notes will be newly issued securities for which there is currently no market, and we do not intend to list the new notes on any securities exchange. Although the initial purchasers of the old notes have informed us that they intend to make a market in the new notes, they are not obligated to do so and may discontinue market-making at any time without notice. Accordingly, a liquid market for the new notes may not develop or be maintained.

        The new notes will evidence the same debt as the old notes. The new notes will be issued under the same indenture and entitled to the same benefits under that indenture as the old notes being exchanged. As of the date of this prospectus, $600.0 million in aggregate principal amount of the old notes were outstanding. Old notes accepted for exchange will be retired and cancelled and not reissued.

        In connection with the issuance of the old notes, we arranged for the old notes originally purchased by qualified institutional buyers and those sold in reliance on Regulation S under the Securities Act to be issued and transferable in book-entry form through the facilities of The Depository Trust Company, or "DTC," acting as depositary. We will issue the new notes in the form of a global note registered in the name of DTC or its nominee and each beneficial owner's interest in such global note will be transferable in book-entry form through DTC.

        Holders of old notes do not have any appraisal or dissenters' rights in connection with the exchange offer. We intend to conduct the exchange offer in accordance with the applicable requirements of the Exchange Act and the rules and regulations of the SEC.

        We shall be considered to have accepted validly tendered old notes if and when we have given written notice to that effect to the exchange agent. The exchange agent will act as agent for the tendering holders for the purposes of receiving the new notes from us.

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        If we do not accept any tendered old notes for exchange because of an invalid tender, the occurrence of the other events described in this prospectus or otherwise, we will return these old notes, without expense, to the tendering holder promptly after the expiration date of the exchange offer.

        Holders who tender old notes will not be required to pay brokerage commissions or fees or, subject to the instructions in the letter of transmittal, transfer taxes on exchange of old notes in connection with the exchange offer. We will pay all charges and expenses, other than the applicable taxes described in the section "Fees and Expenses" below, in connection with the exchange offer.

        If we successfully complete the exchange offer, any old notes which holders do not tender or which we do not accept in the exchange offer will remain outstanding and continue to accrue interest. The holders of old notes after the exchange offer in general will not have further rights under the registration rights agreement, including registration rights and any rights to additional interest. Holders of the old notes wishing to transfer their old notes would have to rely on exemptions from the registration requirements of the Securities Act.

Expiration Date; Extensions; Amendments

        The expiration date for the exchange offer is 5:00 p.m., New York City time, on                    , 2013. We may extend this expiration date in our sole discretion, but in no event to a date later than                    , 2013. If we so extend the expiration date, the term "expiration date" shall mean the latest date and time to which we extend the exchange offer.

        We reserve the right, in our sole discretion:

        We will give oral or written notice of any delay, extension or termination to the exchange agent. In addition, we will promptly give oral or written notice regarding any delay in acceptance, extension or termination of the offer to the registered holders of old notes. If we amend the exchange offer in a manner that we determine to constitute a material change, or if we waive a material condition, we will promptly disclose the amendment or waiver in a manner reasonably calculated to inform the holders of old notes of the amendment, and extend the offer if required by law.

        Without limiting the manner in which we may choose to make public announcements of any delay in acceptance, extension, termination, amendment or waiver regarding the exchange offer, we shall have no obligation to publish, advertise, or otherwise communicate any public announcement, other than by making a release to a financial news service not later than 9:00 a.m., Eastern time on the business day after the previously scheduled expiration date.

Interest on the New Notes

        Interest on the new notes will accrue at the rate of 5.125% per annum on the principal amount, payable semiannually in arrears on June 1 and December 1, commencing on June 1, 2013. In order to avoid duplicative payment of interest, all interest accrued on old notes that are accepted for exchange before June 1, 2013 will be superseded by the interest that is deemed to have accrued on the new notes from December 7, 2012 through the date of the exchange.

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Conditions to the Exchange Offer

        Despite any other term of the exchange offer, we will not be required to accept for exchange, or exchange new notes for, any old notes and we may terminate the exchange offer as provided in this prospectus before the exchange offer's termination if:

        The conditions listed above are for our sole benefit and we may assert them regardless of the circumstances giving rise to any of these conditions. We may waive these conditions in our sole discretion in whole or in part at any time. A failure on our part to exercise any of the above rights shall not constitute a waiver of that right, and that right shall be considered an ongoing right, which we may assert at any time and from time to time. However, all conditions other than those dependent upon receipt of any required governmental approval must be satisfied or waived prior to the expiration of the exchange offer (as extended, if applicable), in order for us to complete the exchange offer. Furthermore, if we elect to waive any condition, we must announce that decision in a manner reasonably calculated to inform noteholders of the waiver.

        If we determine in our reasonable discretion that any of the events listed above has occurred, we may, subject to applicable law:

        Any determination by us concerning the above events will be final and binding.

        In addition, we reserve the right in our reasonable discretion to:

        The terms of any such purchases or offers may differ from the terms of the exchange offer.

Procedures for Tendering

        Except in limited circumstances, only a DTC participant listed on a DTC securities position listing with respect to the old notes may tender old notes in the exchange offer. To tender old notes in the exchange offer, holders of old notes that are DTC participants may follow the procedures for book-entry transfer as set forth below under "Book-Entry Transfer" and in the letter of transmittal.

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        In addition, you must comply with one of the following:

        The tender by a holder of old notes will constitute an agreement between such holder and us in accordance with the terms and subject to the conditions set forth in this prospectus and in the letter of transmittal. If less than all the old notes held by a holder are tendered, the tendering holder should fill in the amount of old notes being tendered in the specified box on the letter of transmittal. The entire amount of old notes delivered or transferred to the exchange agent will be deemed to have been tendered unless otherwise indicated.

        The method of delivery of old notes, the letter of transmittal and all other required documents or transmission of an agent's message, as described under "Book-Entry Transfer," to the exchange agent is at the election and risk of the holder. Instead of delivery by mail, we recommend that holders use an overnight or hand delivery service. In all cases, sufficient time should be allowed to assure timely delivery to the exchange agent prior to the expiration of the exchange offer. No letter of transmittal or old notes should be sent to us or DTC. Delivery of documents to DTC in accordance with its procedures will not constitute delivery to the exchange agent.

        Any beneficial holder whose old notes are registered in the name of his or its broker, dealer, commercial bank, trust company or other nominee and who wishes to tender should contact such registered holder promptly and instruct such registered holder to tender on its behalf. If such beneficial holder wishes to tender on its own behalf, such beneficial holder must, prior to completing and executing the letter of transmittal and delivering its old notes, either:

        The transfer of record ownership may take considerable time and may not be completed prior to the expiration date.

        Signatures on a letter of transmittal or a notice of withdrawal, as described in "—Withdrawal of Tenders" below, must be guaranteed by a member firm of a registered national securities exchange or of the National Association of Securities Dealers, Inc., a commercial bank or trust company having an office or correspondent in the United States or an "eligible guarantor institution," within the meaning of Rule 17Ad-15 under the Exchange Act, which we refer to in this prospectus as an "eligible institution," unless the old notes are tendered:

        If the letter of transmittal is signed by a person other than the registered holder of any old notes listed therein, the old notes must be endorsed or accompanied by appropriate bond powers which authorize the person to tender the old notes on behalf of the registered holder, in either case signed as the name of the registered holder or holders appears on the old notes. If the letter of transmittal or any old notes or bond powers are signed by trustees, executors, administrators, guardians,

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attorneys-in-fact, officers of corporations or others acting in a fiduciary or representative capacity, such persons should so indicate when signing and, unless waived by us, evidence satisfactory to us of their authority to so act must be submitted with the letter of transmittal.

        We will determine in our sole discretion all questions as to the validity, form, eligibility, including time of receipt, and acceptance and withdrawal of tendered old notes. We reserve the absolute right to reject any and all old notes not properly tendered or any old notes whose acceptance by us would, in the opinion of our counsel, be unlawful. We also reserve the right to waive any defects, irregularities or conditions of tender as to any particular old notes either before or after the expiration date. However, all conditions other than those dependent upon receipt of any required governmental approval, must be satisfied or waived prior to the expiration of the exchange offer (as extended, if applicable) in order for us to complete the exchange offer. Furthermore, if we elect to waive any condition, we must announce that decision in a manner reasonably calculated to inform noteholders of the waiver. Our interpretation of the terms and conditions of the exchange offer, including the instructions in the letter of transmittal, will be final and binding on all parties. Unless waived, holders must cure any defects or irregularities in connection with tenders of old notes within a period we will determine. Although we intend to request the exchange agent to notify holders of defects or irregularities relating to tenders of old notes, neither we, the exchange agent nor any other person will have any duty or incur any liability for failure to give this notification. We will not consider tenders of old notes to have been made until these defects or irregularities have been cured or waived. The exchange agent will return any old notes that are not properly tendered and as to which the defects or irregularities have not been cured or waived to the tendering holders, unless otherwise provided in the letter of transmittal, promptly following the expiration date.

        In addition, we reserve the right, as set forth above under the caption "Conditions to the Exchange Offer," to terminate the exchange offer.

        By tendering, each holder represents to us, among other things, that:

        If the holder is a broker-dealer which will receive new notes for its own account in exchange for old notes acquired by such broker-dealer as a result of market-making activities or other trading activities, such holder must acknowledge that it will deliver a prospectus in connection with any resale of the new notes.

Book-Entry Transfer

        We understand that the exchange agent will make a request promptly after the date of this prospectus to establish an account with respect to the old notes at DTC for the purpose of facilitating the exchange offer. Any financial institution that is a participant in DTC's system, including Euroclear and Clearsteam, may make book-entry delivery of old notes by causing DTC to transfer such old notes into the exchange agent's DTC account in accordance with DTC's Automated Tender Offer Program procedures for such transfer. The exchange of new notes for tendered old notes will only be made after a timely confirmation of a book-entry transfer of the old notes into the exchange agent's account and timely receipt by the exchange agent of an agent's message.

        The term "agent's message" means a message, transmitted by DTC and received by the exchange agent and forming part of the confirmation of a book-entry transfer, which states that DTC has

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received an express acknowledgment from a participant tendering old notes that such participant has received an appropriate letter of transmittal and agrees to be bound by the terms of the letter of transmittal, and that we may enforce such agreement against the participant. Delivery of an agent's message will also constitute an acknowledgment from the tendering DTC participant that the representations contained in the letter of transmittal and described under "Resale of New Notes" above are true and correct.

Guaranteed Delivery Procedures

        The following guaranteed delivery procedures are intended for holders who wish to tender their old notes but:

        The conditions that must be met to tender old notes through the guaranteed delivery procedures are as follows:

        Upon request to the exchange agent, a notice of guaranteed delivery will be sent to holders who wish to tender their old notes according to the guaranteed delivery procedures set forth above.

Withdrawal of Tenders

        Your tender of old notes pursuant to the exchange offer is irrevocable except as otherwise provided in this section. You may withdraw tenders of old notes at any time prior to 5:00 p.m., New York City time, on the expiration date.

        For a withdrawal to be effective:

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        Any notice of withdrawal must:

        If old notes have been tendered pursuant to the procedure for book-entry transfer described above, any notice of withdrawal must specify the name and number of the account at DTC to be credited with the withdrawn old notes and otherwise comply with the procedures of the applicable facility. We will determine in our sole discretion all questions as to the validity, form and eligibility, including time of receipt, for such withdrawal notices, and our determination shall be final and binding on all parties. Any old notes so withdrawn will be deemed not to have been validly tendered for purposes of the exchange offer and no new notes will be issued with respect to them unless the old notes so withdrawn are validly re-tendered. Any old notes which have been tendered but which are not accepted for exchange will be returned to the holder without cost to such holder promptly after withdrawal, rejection of tender or termination of the exchange offer. Properly withdrawn old notes may be re-tendered by following the procedures described above under "Procedures for Tendering" at any time prior to the expiration date.

Exchange Agent

        We have appointed U.S. Bank National Association as exchange agent in connection with the exchange offer. Holders should direct questions, requests for assistance and for additional copies of this prospectus, the letter of transmittal or notices of guaranteed delivery to the exchange agent addressed as follows:

By Hand or Overnight Courier:   By Facsimile Transmission:
U.S. Bank National Association   (651) 495-8158
60 Livingston Avenue, 1st Floor Bond Drop Window   (For Eligible Institutions Only)
St. Paul, Minnesota 55107   U.S. Bank National Association
Attention: Specialized Finance   Attention: Specialized Finance
(800) 934-6802   Confirm by Telephone:
    (800) 934-6802

        Delivery of a letter of transmittal to any address or facsimile number other than the one set forth above will not constitute a valid delivery.

Fees and Expenses

        We will not make any payments to brokers, dealers or other persons soliciting acceptances of the exchange offer. We will, however, pay the exchange agent reasonable and customary fees for its services and will pay the exchange agent for its related reasonable out-of-pocket expenses, including accounting and legal fees. We may also pay brokerage houses and other custodians, nominees and fiduciaries the reasonable out-of-pocket expenses incurred by them in forwarding copies of this prospectus, letters of

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transmittal and related documents to the beneficial owners of the old notes and in handling or forwarding tenders for exchange.

        Holders who tender their old notes for exchange will not be obligated to pay any transfer taxes. If, however:

then the tendering holder must pay the amount of any transfer taxes due, whether imposed on the registered holder or any other persons. If the tendering holder does not submit satisfactory evidence of payment of these taxes or exemption from them with the letter of transmittal, the amount of these transfer taxes will be billed directly to the tendering holder.

Consequences of Failure to Properly Tender Old Notes in the Exchange

        We will issue the new notes in exchange for old notes under the exchange offer only after timely receipt by the exchange agent of the old notes, a properly completed and duly executed letter of transmittal and all other required documents. Therefore, holders of the old notes desiring to tender old notes in exchange for new notes should allow sufficient time to ensure timely delivery. We are under no duty to give notification of defects or irregularities of tenders of old notes for exchange. Old notes that are not tendered or that are tendered but not accepted by us will, following completion of the exchange offer, continue to be subject to the existing restrictions upon transfer under the Securities Act. Upon completion of the exchange offer, specified rights under the exchange and registration rights agreement, including registration rights and any right to additional interest, will be either limited or eliminated.

        Participation in the exchange offer is voluntary. In the event the exchange offer is completed, we will not be required to register the remaining old notes. Remaining old notes will continue to be subject to the following restrictions on transfer:

        We do not currently anticipate that we will register the remaining old notes under the Securities Act. To the extent that old notes are tendered and accepted in connection with the exchange offer, any trading market for remaining old notes could be adversely affected.

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DESCRIPTION OF THE NOTES

        You can find the definitions of certain terms used in this "Description of the Notes" below under the subheading "—Certain Definitions." In this description, the term "Issuer" refers to Clean Harbors, Inc. and not any of its Subsidiaries. The Issuer previously issued $600.0 million aggregate principal amount of its 5.125% Senior Notes due 2021 (the "old notes") under an indenture dated as of December 7, 2012 (the "indenture") among itself, the Guarantors and U.S. Bank National Association, as trustee, in an unregistered private placement, and will issue up to $600.0 million aggregate principal amount of 5.125% Senior Notes due 2021 (the "new notes") in exchange for the old notes under the indenture pursuant to this registered exchange offer. The old notes constitute, and the new notes will constitute, "Securities" under the indenture. References to "notes" herein shall include the old notes and the new notes, collectively.

        The terms of the new notes are substantially identical to the terms of the old notes for which they may be exchanged pursuant to the exchange offer, except that the new notes are registered under the Securities Act and do not contain provisions requiring the payment of additional interest in connection with the failure to comply with the registration covenants in the registration rights agreement. The new notes will be pari passu with, and vote together with, any old notes which are not exchanged for new notes on any matter submitted to the holders of notes under the indenture.

        The following description is a summary of the material provisions of the indenture. It does not restate the terms of the indenture in its entirety. We urge that you carefully read the indenture and the Trust Indenture Act of 1939 (the "TIA"), because the indenture and the TIA govern your rights as holders of the notes, not this description. A copy of the indenture may be obtained from us or the initial purchasers. In this description, "we", "us" or "our" refers only to the Issuer and not any of its Subsidiaries.

General

        The notes are:

        As of December 31, 2012, we and the Guarantors had no loans and $132.6 million of letters of credit outstanding under the Credit Agreement and $8.0 million of capital lease obligations. The notes and the guarantees will rank effectively junior in right of payment to our secured Indebtedness (including loans and reimbursement obligations in respect of outstanding letters of credit) under the Credit Agreement and our capital lease obligations to the extent of the value of the collateral securing such secured Indebtedness. Furthermore, our non-guarantor Subsidiaries had as of December 31, 2012, approximately $211.3 million of total liabilities (excluding intercompany liabilities and debt). The notes and the guarantees will rank effectively junior in right of payment to those obligations of our non-guarantor Subsidiaries.

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        The notes are issued in fully registered form only, without coupons, in denominations of $2,000 and integral multiples of $1,000.

        The trustee serves as paying agent and registrar for the notes. You may present your notes for registration of transfer and exchange at the offices of the registrar, which will be the trustee's corporate trust office. The Issuer may change any paying agent and registrar without prior notice.

        The Issuer will pay principal (and premium, if any) on the notes at the trustee's corporate office in St. Paul, Minnesota. At the Issuer's option, interest may be paid at the trustee's corporate trust office or by check mailed to the registered address of holders.

Principal, Maturity and Interest

        The Issuer will issue an aggregate principal amount of up to $600.0 million of new notes in this exchange offer. The notes will mature on June 1, 2021. Additional notes ("Additional Notes") may be issued under the indenture from time to time after the Issue Date, subject to the limitations set forth under "—Certain Covenants—Limitation on Incurrence of Additional Indebtedness." The notes and any Additional Notes subsequently issued will be treated as a single class for all purposes under the indenture.

        Interest on the notes will be payable semiannually in cash on each June 1 and December 1, commencing on June 1, 2013. The Issuer will make each interest payment to the persons who are registered holders at the close of business on the May 15 and November 15 immediately preceding the applicable interest payment date. Interest on the notes will accrue from and including December 7, 2012 and will be computed on the basis of a 360-day year of twelve 30-day months.

        The notes will not be entitled to the benefit of any mandatory redemption or mandatory sinking fund payment.

Optional Redemption

        The Issuer may redeem all or any portion of the notes, on and after December 1, 2016, upon not less than 30 nor more than 60 days' notice, at the following redemption prices (expressed as percentages of the principal amount) if redeemed during the twelve-month period commencing on December 1 of the year set forth below, plus, in each case, accrued and unpaid interest, if any, to the date of redemption:

Year
  Percentage  

2016

    102.563 %

2017

    101.281 %

2018 and thereafter

    100.000 %

        At any time prior to December 1, 2016, the Issuer may, on one or more occasions, redeem all or any portion of the notes, upon not less than 30 nor more than 60 days' notice, at a redemption price equal to 100% of the principal amount of the notes redeemed, plus the Applicable Premium as of the date of redemption, including accrued and unpaid interest to the redemption date.

        At any time, or from time to time, prior to December 1, 2015, the Issuer may, at its option, use the net cash proceeds of one or more Equity Offerings to redeem up to 35% in aggregate principal amount of all notes issued under the indenture (whether at the Issue Date or thereafter pursuant to an issuance of Additional Notes) at a redemption price equal to 105.125% of the principal amount thereof

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plus accrued and unpaid interest thereon, if any, to the date of redemption; provided, however, that after any such redemption the aggregate principal amount of the notes outstanding (whether issued on the Issue Date or thereafter pursuant to an issuance of Additional Notes) must equal at least 65% of the aggregate principal amount of all notes issued under the indenture (whether at the Issue Date or thereafter pursuant to an issuance of Additional Notes). In order to effect the foregoing redemption with the net cash proceeds of any Equity Offering, the Issuer shall make such redemption not more than 90 days after the consummation of such Equity Offering.

        The notes contain a provision which would have required the Issuer to redeem all of the notes, at a redemption price equal to 101% of the aggregate principal amount of the notes plus accrued but unpaid interest, if the Issuer had not completed the acquisition of Safety-Kleen, Inc. by April 26, 2013 pursuant to the terms of the acquisition agreement dated as of October 26, 2012 among Safety-Kleen, Inc., the Issuer and a wholly-owned subsidiary of the Issuer. The Issuer completed that acquisition on December 28, 2012, and therefore that special mandatory redemption provision is no longer relevant.

Selection and Notice of Redemption

        If less than all of the notes are to be redeemed at any time, the trustee will select those notes for redemption in compliance with the requirements of the principal national securities exchange, if any, on which the notes are listed or, if the notes are not then listed on a national securities exchange, on a pro rata basis, provided that:

        Notice of redemption will be mailed by first-class mail at least 30 but not more than 60 days before the redemption date to each holder of notes to be redeemed at its registered address. If any note is to be redeemed in part only, the notice of redemption that relates to the note will state the portion of the principal amount to be redeemed. A replacement note in a principal amount equal to the unredeemed portion will be issued in the name of the holder upon cancellation of the original note. On and after the redemption date, interest will cease to accrue on those notes called for redemption if the Issuer has deposited with the paying agent the funds needed to pay the applicable redemption price.

Guarantees

        Each Guarantor unconditionally guarantees, on a senior unsecured basis, jointly and severally, to each holder of notes and the trustee, the full and prompt performance of the Issuer's obligations under the indenture and the notes, including the payment of principal of and interest on the notes. Each Guarantee is:

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        The obligations of each Guarantor are limited to the maximum amount which, after giving effect to all other contingent and fixed liabilities of such Guarantor and after giving effect to any collections from or payments made by or on behalf of any other Guarantor in respect of the obligations of such other Guarantor under its Guarantee or pursuant to its contribution obligations under the indenture, will result in the obligations of such Guarantor under the Guarantee not constituting a fraudulent conveyance or fraudulent transfer under federal or state law. Each Guarantor that makes a payment or distribution under a Guarantee shall be entitled to a contribution from each other Guarantor in an amount pro rata, based on the net assets of each Guarantor, determined in accordance with GAAP.

        Each Guarantor may consolidate with or merge into or sell its assets to the Issuer or another Guarantor without limitation, or with other Persons upon the terms and conditions set forth in the indenture. See "—Certain Covenants—Merger, Consolidation and Sale of Assets." In the event all of the Capital Stock of a Guarantor is disposed of by the Issuer, whether by merger, consolidation, sale or otherwise, and the disposition is not in violation of the provisions set forth in "—Certain Covenants—Limitation on Asset Sales," the Guarantor's Guarantee will be released. In addition, upon the designation of a Restricted Subsidiary that is a Guarantor as an Unrestricted Subsidiary, which designation is in compliance with the indenture, such Guarantor's Guarantee will be released.

Certain Covenants

        Set forth below are summaries of certain covenants contained in the Indenture.

Change of Control

        The indenture provides that upon the occurrence of a Change of Control, each holder will have the right to require that the Issuer purchase all or a portion of such holder's notes pursuant to the offer described below (the "Change of Control Offer"), at a purchase price equal to 101% of the principal amount plus accrued interest to the date of purchase. Notwithstanding the occurrence of a Change of Control, the Issuer will not be obligated to repurchase the notes under this covenant if the Issuer has exercised its right to redeem all the notes under the terms of the section titled "Optional Redemption."

        Within 30 days following the date upon which the Change of Control occurred, the Issuer will send, by first-class mail, a notice to each holder, with a copy to the trustee, which notice shall govern the terms of the Change of Control Offer. The notice will state, among other things, the purchase date, which must be no earlier than 30 days nor later than 60 days from the date the notice is mailed, other than as may be required by law (the "Change of Control Payment Date"). Holders electing to have a note purchased pursuant to a Change of Control Offer must surrender the note, with the form entitled "Option of Holder to Elect Purchase" on the reverse of the note completed, to the paying agent at the address specified in the notice prior to the close of business on the third business day prior to the Change of Control Payment Date.

        The Issuer will not be required to make a Change of Control Offer upon a Change of Control if a third party makes the Change of Control Offer in the manner, at the times and otherwise in compliance with the requirements set forth in the indenture applicable to a Change of Control Offer made by the Issuer and purchases all notes validly tendered and not withdrawn under such Change of Control Offer.

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        If the Issuer makes a Change of Control Offer, there can be no assurance that it will have available funds sufficient to pay the Change of Control purchase price for all the notes that might be delivered by holders seeking to accept the Change of Control Offer. In the event the Issuer is required to purchase outstanding notes pursuant to a Change of Control Offer, the Issuer expects that it would seek third party financing to the extent it lacks available funds to meet its purchase obligations. However, there can be no assurance that the Issuer would be able to obtain such financing.

        The trustee may not waive the covenant relating to a holder's right to have such holder's note purchased upon a Change of Control. However, the covenant and other provisions contained in the indenture relating to the Issuer's obligation to make a Change of Control Offer may be waived or modified with the written consent of the holders of a majority in principal amount of the notes. Restrictions described in the indenture on the ability of the Issuer and its Restricted Subsidiaries to incur additional Indebtedness, to grant Liens on their property, to make Restricted Payments and to make Asset Sales may also make more difficult or discourage a takeover of the Issuer, whether favored or opposed by our management. Consummation of any such transaction may require redemption or repurchase of the notes, and there can be no assurance that the Issuer or the acquiring party will have sufficient financial resources to effect such redemption or repurchase. Such restrictions and the restrictions on transactions with Affiliates may make more difficult or discourage any leveraged buyout of the Issuer or any of its Restricted Subsidiaries by our management. While such restrictions cover a wide variety of arrangements which have traditionally been used to effect highly leveraged transactions, the indenture may not afford you protection in all circumstances from the adverse aspects of a highly leveraged transaction, reorganization, restructuring, merger or similar transaction.

        The Issuer will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent such laws and regulations are applicable in connection with the repurchase of notes pursuant to a Change of Control Offer. To the extent that the provisions of any securities laws or regulations conflict with the "Change of Control" provisions of the indenture, the Issuer will comply with the applicable securities laws and regulations and will not be deemed to have breached the Issuer's obligations under the "Change of Control" provisions of the indenture by so doing.

        The definition of "Change of Control" includes, among other transactions, a disposition of "all or substantially all" of the Issuer's property and assets. With respect to the disposition of property or assets, the phrase "all or substantially all" as used in the indenture varies according to the facts and circumstances of the subject transaction, has no clearly established meaning under relevant law and is subject to judicial interpretation. Accordingly, in certain circumstances, there may be a degree of uncertainty in ascertaining whether a particular transaction would involve a disposition of "all or substantially all" of the property or assets of a Person, and therefore it may be unclear whether a Change of Control has occurred and whether the Issuer is required to make a Change of Control Offer.

Suspension of Covenants

        If on any date following the Issue Date, (i) the notes have Investment Grade Ratings from at least two Rating Agencies and (ii) no Default has occurred and is continuing under the indenture, then, beginning on such day and continuing at all times thereafter until the Reversion Date, as defined below (the occurrence of the events described in the foregoing clauses (i) and (ii) being collectively referred to as a "Covenant Suspension Event"), the covenants listed under the following captions in this "Description of the Notes" section of this prospectus will not be applicable to the notes (collectively, the "Suspended Covenants"):

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        If and during any period that the Issuer and the Restricted Subsidiaries are not subject to the Suspended Covenants, the notes will have substantially less covenant protection. In the event that the Issuer and the Restricted Subsidiaries are not subject to the Suspended Covenants under the indenture for any period of time as a result of the foregoing, and on any subsequent date (the "Reversion Date") one or both of the Rating Agencies withdraw their Investment Grade Rating or downgrade the rating assigned to the notes below an Investment Grade Rating, then the Issuer and the Restricted Subsidiaries will thereafter again be subject to the Suspended Covenants under the Indenture with respect to future events. The period of time between the Covenant Suspension Event and the Reversion Date is referred to in this description as the "Suspension Period."

        On each Reversion Date, all Indebtedness incurred during the Suspension Period will be classified as having been incurred pursuant to clause (3) of the definition of Permitted Indebtedness. Calculations made after the Reversion Date of the amount available to be made as Restricted Payments under "—Limitation on Restricted Payments" will be made as though the covenant described under "—Limitation on Restricted Payments" had been in effect since the Issue Date and throughout the Suspension Period. Accordingly, Restricted Payments made during the Suspension Period will reduce the amount available to be made as Restricted Payments under the first paragraph of "—Limitation on Restricted Payments." As described above, however, no Default or Event of Default will be deemed to have occurred on the Reversion Date as a result of any action or inaction taken or not taken by the Issuer or the Restricted Subsidiaries during the Suspension Period, that would have, if the Suspended Covenants were not suspended, resulted in a breach of, or default under, any of the Suspended Covenants.

        For purposes of the "—Asset Sales" covenant, on the Reversion Date, the Net Proceeds Trigger will be reset to zero.

        During a Suspension Period, the Issuer may not designate any of its Subsidiaries as Unrestricted Subsidiaries.

        There can be no assurance that the notes will ever achieve or maintain Investment Grade Ratings.

Limitation on Incurrence of Additional Indebtedness

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Limitation on Restricted Payments

        The Issuer will not, and will not cause or permit any of its Restricted Subsidiaries to, directly or indirectly,

(each of the actions listed above being referred to as a "Restricted Payment"), if at the time of such Restricted Payment or immediately after giving effect thereto:

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provided, however, that the sum of clauses (I), (II) and (III) above will not exceed the aggregate amount of all such Investments made by the Issuer or any of its Restricted Subsidiaries in the relevant Person or Unrestricted Subsidiary after the Secured Notes Issue Date.

        As of December 31, 2012, the amount of Restricted Payments permitted to be made pursuant to clause (3) of the immediately preceding paragraph was approximately $580.2 million.

        However, the provisions set forth in the immediately preceding paragraph do not prohibit:

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        In determining the aggregate amount of Restricted Payments made after the Secured Notes Issue Date in accordance with clause (3) of the immediately preceding paragraph (A) for the period from the Secured Notes Issue Date to the Existing Notes Issue Date, only amounts expended pursuant to the first paragraph of Section 4.3 of the Secured Notes Indenture and pursuant to clauses (1), (2)(b), (3)(b)(i), (4) and (5) of the second paragraph of Section 4.3 of the Secured Notes Indenture will be included in the calculation, (y) for the period from the Existing Notes Issue date to the Issue Date, only amounts expended pursuant to the first paragraph of Section 4.3 of the Existing Notes Indenture and pursuant to clauses (1), (2)(b), (3)(b)(i), (4) and (5) of the second paragraph of Section 4.3 of the Existing Notes Indenture will be included in the calculation and (z) on and after the Issue Date, only amounts expended pursuant to the first paragraph of this "—Limitation on Restricted Payments" covenant and pursuant to clauses (1), (2)(b), (3)(b)(i), (4) and (5) of the second paragraph of this "—Limitation on Restricted Payments" covenant will be included in the calculation.

        Not later than the date of making any Restricted Payment, the Issuer will deliver to the trustee an officers' certificate stating that such Restricted Payment complies with the indenture and setting forth in reasonable detail the basis upon which the required calculations were computed, which calculations may be based upon the Issuer's latest available internal quarterly financial statements.

Limitation on Asset Sales

        The Issuer will not, and will not permit any of its Restricted Subsidiaries to, consummate an Asset Sale unless:

and, in each case, such consideration is received at the time of such disposition; provided that the amount of

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shall be deemed to be cash for the purposes of this provision only; and

        On the 366th day after such Asset Sale or such earlier date, if any, as the Issuer's Board of Directors or of such Restricted Subsidiary determines not to apply the Net Cash Proceeds relating to such Asset Sale as set forth in clause (3) of the immediately preceding paragraph (each, a "Net Proceeds Offer Trigger Date"), such aggregate amount of Net Cash Proceeds which have not been applied on or before such Net Proceeds Offer Trigger Date (each a "Net Proceeds Offer Amount") shall be applied by the Issuer or such Restricted Subsidiary to make an offer to purchase from the holders of the notes, and, if required by the terms of any Other Pari Passu Obligations, from the holders of such Other Pari Passu Obligations (the "Net Proceeds Offer") on a date (the "Net Proceeds Offer Payment Date") not less than 30 nor more than 60 days following the applicable Net Proceeds Offer Trigger Date, on a pro rata basis, an amount of notes and Other Pari Passu Obligations equal to the Net Proceeds Offer Amount at a price equal to 100% of the principal amount of the notes and Other Pari Passu Obligations to be purchased, plus accrued and unpaid interest thereon, if any, to the date of purchase.

        If at any time any non-cash consideration received by the Issuer or any Restricted Subsidiary of the Issuer, as the case may be, in connection with such Asset Sale is converted into or sold or otherwise disposed of for cash (other than interest received with respect to any such non-cash consideration), then such conversion or disposition shall be deemed to constitute an Asset Sale hereunder as of the date of such conversion or disposition and the Net Cash Proceeds thereof will be applied in accordance with this covenant.

        The Issuer may defer the Net Proceeds Offer until there is an aggregate unutilized Net Proceeds Offer Amount equal to or in excess of $25.0 million (the "Net Proceeds Trigger") resulting from one or more Asset Sales (at which time, the entire unutilized Net Proceeds Offer Amount, and not just the amount in excess of $25.0 million, shall be applied as required pursuant to the second preceding paragraph).

        Notice of each Net Proceeds Offer pursuant to paragraph (a) will be mailed to the record holders as shown on the register of holders within 25 days following the Net Proceeds Offer Trigger Date, with a copy to the trustee, and will comply with the procedures set forth in the indenture. Upon receiving notice of the Net Proceeds Offer, holders may elect to tender their notes or Other Pari Passu Obligations in whole or in part in denominations of $2,000 or integral multiples of $1,000 in excess

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thereof in exchange for cash. To the extent holders properly tender notes and Other Pari Passu Obligations in an amount exceeding the Net Proceeds Offer Amount, notes and Other Pari Passu Obligations of tendering holders will be purchased on a pro rata basis (based on amounts tendered). To the extent that the aggregate amount of the notes and Other Pari Passu Obligations tendered pursuant to a Net Proceeds Offer is less than the Net Proceeds Offer Amount, the Issuer may use such excess Net Proceeds Offer Amount for general corporate purposes or for any other purposes not prohibited by the indenture. Upon completion of any such Net Proceeds Offer, the Net Proceeds Offer Amount shall be reset at zero. A Net Proceeds Offer shall remain open for a period of 20 business days or such longer period as may be required by law.

        The Issuer will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent such laws and regulations are applicable in connection with the repurchase of notes pursuant to a Net Proceeds Offer. To the extent that the provisions of any securities laws or regulations conflict with the "Asset Sale" provisions of the indenture, the Issuer shall comply with the applicable securities laws and regulations and shall not be deemed to have breached their obligations under the "Asset Sale" provisions of the indenture by virtue thereof. The covenant and other provisions contained in the indenture relating to the Issuer's obligation to make a Net Proceeds Offer may be waived or modified with the written consent of the holders of a majority in principal amount of the notes.

Limitations on Dividend and Other Payment Restrictions Affecting Subsidiaries

        The Issuer will not, and will not cause or permit any of its Restricted Subsidiaries (other than a Restricted Subsidiary that has executed a Guarantee) to, directly or indirectly, create or otherwise cause or permit to exist or become effective any encumbrance or restriction on the ability of any Restricted Subsidiary of the Issuer to:

except for such encumbrances or restrictions existing under or by reason of:

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Limitation on the Issuance and Sale of Capital Stock of Restricted Subsidiaries

        The Issuer will not sell, and will not permit any of its Restricted Subsidiaries, directly or indirectly, to issue or sell, any shares of Capital Stock of a Restricted Subsidiary (including options, warrants or other rights to purchase shares of such Capital Stock) except:

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Limitation on Issuances of Guarantees by Restricted Subsidiaries

        The Issuer will not permit any of its Restricted Subsidiaries, directly or indirectly, to guarantee any of the Issuer's Indebtedness or any Indebtedness of the Issuer's Domestic Restricted Subsidiaries, unless (1) such Restricted Subsidiary simultaneously executes and delivers a supplemental indenture to the indenture providing for a senior unsecured Guarantee of payment of the notes by such Restricted Subsidiary, and (2) such Restricted Subsidiary waives and will not in any manner whatsoever claim or take the benefit or advantage of any rights of reimbursement, indemnity or subrogation or any other rights against the Issuer or any other Restricted Subsidiary as a result of any payment by such Restricted Subsidiary under its Guarantee so long as any notes remain outstanding.

        Notwithstanding the foregoing or the covenant set forth below under "Future Guarantors," any Guarantee by a Restricted Subsidiary may provide by its terms that it shall be automatically and unconditionally released and discharged upon

Future Guarantors

        If the Issuer organizes or acquires any Domestic Restricted Subsidiary having total assets with a book value in excess of $1.0 million (each, a "New Domestic Restricted Subsidiary"), the Issuer will cause such New Domestic Restricted Subsidiary to promptly execute and deliver to the trustee a Guarantee or a joinder thereto.

        Thereafter, such New Domestic Restricted Subsidiary shall be a Guarantor for all purposes of the indenture. Furthermore, the Issuer shall have delivered to the trustee an officers' certificate and an opinion of counsel, each stating that such supplemental indenture complies with the applicable provisions of the indenture, that all conditions precedent in the indenture relating to such transaction have been satisfied and that such supplemental indenture is enforceable, subject to customary qualifications.

Limitation on Liens

        The Issuer will not, and will not cause or permit any of its Restricted Subsidiaries to, directly or indirectly, create, incur, assume or permit or suffer to exist any Lien of any kind against or upon any property or assets of the Issuer or any of its Restricted Subsidiaries whether owned on the Issue Date or acquired after the Issue Date, or any proceeds therefrom, or assign or otherwise convey any right to receive income or profits therefrom unless the notes are equally and ratably secured (or secured on a senior basis to such Lien, if such Lien secures any subordinated Indebtedness), except for the following Liens which are expressly permitted:

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Merger, Consolidation and Sale of Assets

        The Issuer will not, in a single transaction or series of related transactions, consolidate or merge with or into any Person, or sell, assign, transfer, lease, convey or otherwise dispose of all or substantially all of its assets (determined on a consolidated basis for the Issuer and its Restricted Subsidiaries) whether as an entirety or substantially as an entirety to any Person unless:

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        Notwithstanding the foregoing, (a) the merger of the Issuer with an Affiliate incorporated solely for the purpose of reincorporating the Issuer in another jurisdiction shall be permitted and (b) the merger of any Restricted Subsidiary of the Issuer into the Issuer or the transfer, lease, conveyance or other disposition of all or substantially all of the assets of a Restricted Subsidiary of the Issuer to the Issuer shall be permitted so long as the Issuer delivers to the trustee an officers' certificate stating that the purpose of such merger, transfer, lease, conveyance or other disposition is not to consummate a transaction that would otherwise be prohibited by clause (3) of this covenant.

        For purposes of the foregoing, the transfer (by lease, assignment, sale or otherwise, in a single transaction or series of transactions) of all or substantially all of the properties or assets of one or more Restricted Subsidiaries of the Issuer the Capital Stock of which constitutes all or substantially all of the properties and assets of the Issuer shall be deemed to be the transfer of all or substantially all of the properties and assets of the Issuer.

        The indenture provides that upon any consolidation, combination or merger or any transfer of all or substantially all of the assets of the Issuer in accordance with the foregoing in which the Issuer is not the continuing corporation, the successor Person formed by such consolidation or into which the Issuer is merged or to which such conveyance, lease or transfer is made shall succeed to, and be substituted for, and may exercise every right and power of, the Issuer under the indenture and the notes with the same effect as if such Surviving Entity had been named as such.

        Furthermore, the Issuer shall have delivered to the trustee an officers' certificate and an opinion of counsel, each stating that such transaction and, if a supplemental indenture is required in connection with such transaction, such supplemental indenture complies with the applicable provisions of the indenture, that all conditions precedent in the indenture relating to such transaction have been satisfied and that such supplemental indenture is enforceable, subject to customary qualifications.

        Each Guarantor (other than any Guarantor whose Guarantee is to be released in accordance with the terms of such Guarantee and the indenture in connection with any transaction complying with the provisions of "—Limitation on Asset Sales") will not, and the Issuer will not cause or permit any Guarantor to, consolidate with or merge with or into any Person other than the Issuer or any other Guarantor unless:

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        Any merger or consolidation of a Guarantor with and into the Issuer (with the Issuer being the surviving entity) or another Guarantor that is a Wholly Owned Restricted Subsidiary of the Issuer need only comply with clause (4) of the first paragraph of this covenant.

Limitations on Transactions with Affiliates

All Affiliate Transactions (and each series of related Affiliate Transactions which are similar or part of a common plan) involving aggregate payments or other property with a fair market value in excess of $10.0 million shall be approved by the Issuer's Board of Directors or the Board of Directors of such Restricted Subsidiary, as the case may be, such approval to be evidenced by a Board Resolution stating that such Board of Directors has determined that such transaction complies with the foregoing provisions. If the Issuer or any of its Restricted Subsidiaries enters into an Affiliate Transaction (or a series of related Affiliate Transactions related to a common plan) that involves an aggregate fair market value of more than $25.0 million, the Issuer or such Restricted Subsidiary, as the case may be, shall, prior to the consummation thereof, obtain a favorable opinion as to the fairness of such transaction or series of related transactions to the Issuer or the relevant Restricted Subsidiary, as the case may be, from a financial point of view, from an Independent Financial Advisor and file the same with the trustee.

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Reports to Holders

        The indenture provides that, whether or not required by the rules and regulations of the Commission, so long as any notes are outstanding, the Issuer will file a copy of the following information and reports with the Commission for public availability (unless the Commission will not accept such a filing) and will furnish to the holders of notes and to securities analysts and prospective investors, upon their written request:

        In addition, whether or not required by the rules and regulations of the Commission, the Issuer will file a copy of all such information and reports with the Commission for public availability within the time periods specified in the Commission's rules and regulations (unless the Commission will not accept such a filing) and make such information available to securities analysts and prospective investors upon written request to the Issuer.

        In addition, for so long as any notes remain outstanding, the Issuer shall furnish to the holders and to securities analysts and prospective investors, upon their request, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act.

Events of Default

        The following events are defined in the indenture as "Events of Default":

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        If an Event of Default (other than an Event of Default specified in clause (6) above with respect to the Issuer) shall occur and be continuing, the trustee or the holders of at least 25% in principal amount of outstanding notes may declare the principal of and accrued interest on all the notes to be due and payable by notice in writing to the Issuer and the trustee specifying the respective Event of Default and that it is a "notice of acceleration" (the "Acceleration Notice"), and the same shall become immediately due and payable.

        If an Event of Default specified in clause (6) above with respect to the Issuer occurs and is continuing, then all unpaid principal of and premium, if any, and accrued and unpaid interest on all of the outstanding notes shall automatically become and be immediately due and payable without any declaration or other act on the part of the trustee or any holder.

        The indenture provides that, at any time after a declaration of acceleration with respect to the notes as described in the preceding paragraph, the holders of a majority in principal amount of the notes may rescind and cancel such declaration and its consequences:

        No such rescission will affect any subsequent Default or Event of Default or impair any right consequent thereto.

        The holders of a majority in principal amount of the notes may waive any existing Default or Event of Default under the indenture, and its consequences, except a Default in the payment of the principal of or interest on any notes.

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        Holders of the notes may not enforce the indenture or the notes except as provided in the indenture and under the TIA. Subject to the provisions of the indenture relating to the duties of the trustee, the trustee will be under no obligation to exercise any of its rights or powers under the indenture at the request, order or direction of any of the holders, unless such holders have offered to the trustee reasonable indemnity. Subject to all provisions of the indenture and applicable law, the holders of a majority in aggregate principal amount of the then outstanding notes have the right to direct the time, method and place of conducting any proceeding for any remedy available to the trustee or exercising any trust or power conferred on the trustee.

        Under the indenture, the Issuer will be required to provide an officers' certificate to the trustee promptly upon any such officer obtaining knowledge of any Default or Event of Default, describing such Default or Event of Default and the status thereof, and annually, describing whether or not such officer knows of any Default or Event of Default.

No Personal Liability of Directors, Officers, Employees, Members and Stockholders

        No Affiliate, director, officer, employee, limited liability company member or stockholder of the Issuer or any Subsidiary, as such, shall have any liability for any obligations of the Issuer or any Guarantor under the notes or the indenture or any Guarantee or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each holder of notes by accepting a note waives and releases all such liability. The waiver and release were part of the consideration for issuance of the notes.

Legal Defeasance and Covenant Defeasance

        The Issuer may at any time elect to have its obligations and the obligations of any Guarantor discharged with respect to the outstanding notes ("Legal Defeasance"). Such Legal Defeasance means that the Issuer will be deemed to have paid and discharged the entire Indebtedness represented by the outstanding notes, except for:

        In addition, the Issuer may at any time elect to have its obligations released with respect to certain covenants that are described in the indenture ("Covenant Defeasance"). Any omission to comply with such obligations would then not constitute a Default or Event of Default with respect to the notes. If Covenant Defeasance occurs, the Issuer's failure to perform these covenants will no longer constitute an Event of Default with respect to the notes.

        In order to exercise either Legal Defeasance or Covenant Defeasance:

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        However, the opinion of counsel required by clause (2) above is not required if all notes not theretofore delivered to the trustee for cancellation have become due and payable, will become due and payable on the maturity date within one year or are to be called for redemption within one year under arrangements reasonably satisfactory to the trustee for the giving of notice of redemption by the trustee in the Issuer's name, and at the Issuer's expense.

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Satisfaction and Discharge

        The indenture will be discharged when:

        When the indenture is discharged, it ceases to be of further effect except for surviving rights of registration or transfer or exchange of the notes.

Modification of the Indenture

        From time to time, the Issuer, the Guarantors or the trustee, without the consent of the holders, may amend the indenture to cure ambiguities, defects or inconsistencies and to add Guarantees, so long as such change does not, in the good faith determination of the Issuer's Board of Directors, adversely affect the rights of any of the holders of the notes in any material respect. In making its determination, the Issuer's Board of Directors may rely on such evidence as it deems appropriate. Other modifications and amendments of the indenture may be made with the consent of the holders of a majority in principal amount of the then outstanding notes issued under the indenture, except that the consent of each holder affected thereby is required to:

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Governing Law

        The indenture, the notes and any Guarantee are governed by, and construed in accordance with, the laws of the State of New York but without giving effect to applicable principles of conflicts of law to the extent that the application of the law of another jurisdiction would be required thereby.

The Trustee

        U.S. Bank National Association is the trustee under the indenture and has been appointed to act as registrar and paying agent with respect to the notes. The indenture provides that, except during the continuance of an Event of Default, the trustee will perform only such duties as are specifically set forth in the indenture. During the existence of an Event of Default known to the trustee, the trustee will exercise such rights and powers vested in it by the indenture and use the same degree of care and skill in its exercise as a prudent man would exercise or use under the circumstances in the conduct of his own affairs. The trustee is under no obligation to exercise any of its rights or powers under the indenture at the request of any holder of the notes unless such holder shall have offered the trustee security and indemnity satisfactory to it against any loss, liability or expense which might be incurred by it as a result of complying with such request.

        If the trustee becomes a creditor of ours, the indenture and the provisions of the TIA limit the rights of the trustee to obtain payments of its claims or to realize on certain property received in respect of its claims. Subject to the TIA, the trustee will be permitted to engage in other transactions; however, if the trustee acquires any conflicting interest as described in the TIA, it must eliminate such conflict or resign.

Certain Definitions

        Set forth below is a summary of certain of the defined terms used in the indenture. You should read the indenture for the full definition of all such terms and any other terms used herein for which no definition is provided.

        "Acquired Indebtedness" means Indebtedness of a Person or any of its Subsidiaries

in each case, not incurred by such Person in connection with, or in contemplation of, such Person becoming a Restricted Subsidiary of the Issuer or such acquisition, merger or consolidation.

        "Affiliate" of any specified Person means any other Person who directly or indirectly through one or more intermediaries controls, or is controlled by, or is under common control with, such specified Person. The term "control" means the possession, directly or indirectly, of the power to direct or cause

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the direction of the management and policies of a Person, whether through the ownership of voting securities, by contract or otherwise. "Controlling" and "controlled" shall have correlative meanings.

        "Applicable Premium" means, with respect to any note on any redemption date, the greater of:

        "Asset Acquisition" means:

        "Asset Sale" means any direct or indirect sale, issuance, conveyance, transfer, lease (other than operating leases entered into in the ordinary course of business), assignment or other transfer for value by the Issuer or any of the Issuer's Restricted Subsidiaries, including any Sale and Leaseback Transaction, to any Person other than the Issuer or a Wholly Owned Restricted Subsidiary of the Issuer of:

        Notwithstanding the preceding, the following items shall not be deemed Asset Sales:

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        "Bankruptcy Law" means Title 11, U.S. Code, or any similar federal, state or foreign law for the relief of debtors.

        "Beneficial Owner" has the meaning assigned to such term in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular "person" (as such term is used in Section 13(d)(3) of the Exchange Act), such "person" will be deemed to have beneficial ownership of all securities that such "person" has the right to acquire, whether such right is currently exercisable or is exercisable only upon the occurrence of a subsequent condition, regardless of when such right may be exercised.

        "Board of Directors" of any Person means the board of directors or equivalent governing board of such Person or any duly authorized committee thereof.

        "Board Resolution" means a copy of a resolution certified by the Secretary or an Assistant Secretary of any Person to have been duly adopted by the Board of Directors of such Person and to be in full force and effect on the date of such certification, and delivered to the trustee.

        "Capitalized Lease Obligation" means, at the time any determination thereof is to be made, the amount of the liability of a Person under a capital lease that would at that time be required to be capitalized on a balance sheet in accordance with GAAP, with the stated maturity being the date of the last payment of rent or any other amount due under such lease prior to the first date upon which such lease may be prepaid by the lessee without payment of a penalty.

        "Capital Stock" means:

        "Cash Management Agreement" means any agreement to provide cash management services to the Issuer or any Restricted Subsidiary, including treasury, depository, overdraft, credit or debit card, electronic funds transfer and other cash management arrangements.

        "Cash Equivalents" means:

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        "Change of Control" means the occurrence of one or more of the following:

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        A recent Delaware court case has implied that the provisions in clause (4) above may be unenforceable on public policy grounds. No assurances can be given that a court would enforce clause (4) as written for the benefit of holders of the notes.

        "Commission" means the United States Securities and Exchange Commission.

        "Commodity Agreement" means any commodity futures contract, commodity option or other similar agreement or arrangement entered into by the Issuer or any of its Restricted Subsidiaries designed to protect the Issuer or any of its Restricted Subsidiaries against fluctuations in the price of the commodities at the time used in the ordinary course of the Issuer's business or the business of any of the Issuer's Restricted Subsidiaries.

        "Common Stock" means any and all shares, interests or other participations in, and other equivalents (however designated and whether voting or nonvoting) of, such Person's common stock, whether outstanding on the Issue Date or issued after the Issue Date, including all series and classes of such common stock.

        "Consolidated EBITDA" means, with respect to any Person, for any period, the sum (without duplication) of:

all as determined on a consolidated basis for such Person and its Restricted Subsidiaries in accordance with GAAP as applicable.

        "Consolidated Fixed Charge Coverage Ratio" means, with respect to any Person, the ratio of Consolidated EBITDA of such Person during the four full fiscal quarters for which financial statements are available (the "Four Quarter Period") ending on or prior to the date of the transaction giving rise to the need to calculate the Consolidated Fixed Charge Coverage Ratio (the "Transaction Date") to Consolidated Fixed Charges of such Person for the Four Quarter Period. In addition to and without limitation of the foregoing, for purposes of this definition, "Consolidated EBITDA" and "Consolidated

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Fixed Charges" shall be calculated after giving effect on a pro forma basis (consistent with the provisions below) for the period of such calculation to:

        Furthermore, in calculating "Consolidated Fixed Charges" for purposes of determining the denominator (but not the numerator) of this "Consolidated Fixed Charge Coverage Ratio,"

        "Consolidated Fixed Charges" means, with respect to any Person for any period, the sum, without duplication, of:

        "Consolidated Indebtedness" means, as of any date of determination, the sum, without duplication, of (1) the total amount of Indebtedness of the Issuer and its Restricted Subsidiaries, plus (2) the

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greater of the aggregate liquidation value and maximum fixed repurchase price without regard to any change of control or redemption premiums of all Disqualified Capital Stock of the Issuer and its Restricted Subsidiaries and all Preferred Stock of its Restricted Subsidiaries that are not Guarantors, in each case determined on a consolidated basis in accordance with GAAP.

        "Consolidated Interest Expense" means, with respect to any Person for any period, the sum of, without duplication:

        "Consolidated Net Income" means, with respect to any Person for any period, the aggregate net income (or loss) of such Person and its Restricted Subsidiaries for such period on a consolidated basis, determined in accordance with GAAP; provided that the following shall be excluded:

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        "Consolidated Non-cash Charges" means, with respect to any Person for any period, the aggregate depreciation, amortization, accretion and other non-cash expenses of such Person and its Restricted Subsidiaries reducing Consolidated Net Income of such Person and its Restricted Subsidiaries for such period, determined on a consolidated basis in accordance with GAAP (excluding any such charges constituting an extraordinary item or loss or any such charge (other than non-cash accretion of environmental liabilities required by GAAP) which requires an accrual of or a reserve for cash charges for any future period).

        "Consolidated Secured Leverage Ratio" means, as of any date of determination, the ratio of (a) the Consolidated Indebtedness on such date that is secured by a Lien on any asset of the Issuer or any Restricted Subsidiary to (b) Consolidated EBITDA of the Issuer and its Restricted Subsidiaries during the four full fiscal quarters for which financial statements are available ending on or prior to the date of the transaction giving rise to the need to calculate the Consolidated Secured Leverage Ratio, in each case with such pro forma adjustments as are appropriate and consistent with the pro forma adjustment provisions set forth in the definition of "Consolidated Fixed Charge Coverage Ratio."

        "Consolidated Total Assets" means the total assets of the Issuer and its Restricted Subsidiaries, determined on a consolidated basis in accordance with GAAP, as of the most recent balance sheet of the Issuer.

        "Credit Agreement" means, collectively, (i) one or more credit facilities, including, without limitation, the third amended and restated credit agreement dated as of May 31, 2011, among the Issuer, as the U.S. borrower, Clean Harbors Industrial Services Canada, Inc., as the Canadian borrower, the financial institutions party to such agreement in their capacities as lenders, Bank of America, N.A., as administrative agent, and certain other parties and (ii) the related documents (including, without limitation, any guarantee agreements, promissory notes, fee letters and security documents), in each case as such agreements, other agreements and security documents may be amended (including any amendment and restatement), supplemented or otherwise modified from time to time, including any agreement extending the maturity of, refinancing, replacing or otherwise restructuring (including increasing the amount of available borrowings or availability of letters of credit thereunder or adding Restricted Subsidiaries of the Issuer as additional borrowers or guarantors thereunder) all or any portion of the Indebtedness under such agreements, other agreements or any successor or replacement agreement or agreements and whether by the same or any other agent, lender or group of lenders, or issuers of letters of credit.

        "Currency Agreement" means any foreign exchange contract, currency swap agreement or other similar agreement or arrangement designed to protect the Issuer or any Restricted Subsidiary of the Issuer against fluctuations in currency values.

        "Debtor Relief Laws" means the Bankruptcy Law, and all other liquidation, conservatorship, bankruptcy, assignment for the benefit of creditors, moratorium, rearrangement, receivership, insolvency, reorganization, or similar debtor relief laws or regulations of the United States or other applicable jurisdictions from time to time in effect and affecting the rights of creditors generally.

        "Default" means an event that is, or with the passage of time or the giving of notice or both would be, an Event of Default.

        "Disqualified Capital Stock" means that portion of any Capital Stock which, by its terms (or by the terms of any security into which it is convertible or for which it is exchangeable at the option of the holder thereof), or upon the happening of any event (other than an event which would constitute a Change of Control), matures or is mandatorily redeemable, pursuant to a sinking fund obligation or

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otherwise, or is redeemable at the sole option of the holder thereof (except, in each case, upon the occurrence of a Change of Control) on or prior to the final maturity date of the notes.

        "Domestic Restricted Subsidiary" means any Restricted Subsidiary of the Issuer incorporated or otherwise organized or existing under the laws of the United States, any State or the District of Columbia, other than any Restricted Subsidiary that is a Subsidiary of a Foreign Restricted Subsidiary.

        "Equity Offering" means a public or private sale of Qualified Capital Stock (other than on Form S-4 or S-8 or any successor Forms thereto) of the Issuer.

        "Exchange Act" means the Securities Exchange Act of 1934, as amended, or any successor statutes.

        "Existing Notes" means the Issuer's 5.25% Senior Notes due 2020.

        "Existing Notes Indenture" means the indenture, dated as of July 30, 2012, pursuant to which the Existing Notes were issued.

        "Existing Notes Issue Date" means July 30, 2012.

        "fair market value" means with respect to any asset or property, the price which could be negotiated in an arm's-length, free market transaction, for cash, between a willing seller and a willing and able buyer, neither of whom is under undue pressure or compulsion to complete the transaction. Fair market value shall be determined conclusively by the Issuer's Board of Directors acting reasonably and in good faith and, to the extent otherwise required by the indenture, shall be evidenced by a Board Resolution of the Issuer's Board of Directors delivered to the trustee.

        "Foreign Restricted Subsidiary" means any of the Issuer's Restricted Subsidiaries incorporated or organized in any jurisdiction outside of the United States.

        "Foreign Subsidiary Total Assets" means the total assets of Foreign Restricted Subsidiaries of the Issuer, determined on a consolidated basis in accordance with GAAP, as of the most recent balance sheet of the Issuer.

        "GAAP" means generally accepted accounting principles set forth in the opinions and pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board or in such other statements by such other entity as may be approved by a significant segment of the accounting profession of the United States, which are in effect as of the Issue Date.

        "guarantee" means any obligation, contingent or otherwise, of any Person directly or indirectly guaranteeing any Indebtedness of any other Person, including any obligation, direct or indirect, contingent or otherwise, of such Person

        Notwithstanding the preceding, "guarantee" does not include endorsements for collection or deposit in the ordinary course of business. The term "guarantee" used as a verb has a corresponding meaning.

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        "Guarantee" means the guarantee by each Guarantor of the Issuer's obligations under the indenture.

        "Guarantor" means:

provided that any Person constituting a Guarantor as described above shall cease to constitute a Guarantor when its Guarantee is released in accordance with the terms of the indenture.

        "Indebtedness" means with respect to any Person any indebtedness of such Person, without duplication, in respect of:

        For purposes of this definition of Indebtedness, the "maximum fixed repurchase price" of any Disqualified Capital Stock which does not have a fixed repurchase price shall be calculated in accordance with the terms of such Disqualified Capital Stock as if such Disqualified Capital Stock were purchased on any date on which Indebtedness shall be required to be determined pursuant to the indenture, and if such price is based upon, or measured by, the fair market value of such Disqualified Capital Stock, such fair market value shall be determined reasonably and in good faith by the Board of Directors of the issuer of such Disqualified Capital Stock. For purposes of the covenant described

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above under the caption "Limitation on Incurrence of Additional Indebtedness," in determining the principal amount of any Indebtedness to be incurred by the Issuer or any Restricted Subsidiary or which is outstanding at any date, the principal amount of any Indebtedness which provides that an amount less than the principal amount shall be due upon any declaration of acceleration shall be the accreted value of the Indebtedness at the date of determination.

        "Independent Financial Advisor" means a firm:

        "Interest Swap Obligations" means the obligations of any Person pursuant to any arrangement with any other Person, whereby, directly or indirectly, such Person is entitled to receive from time to time periodic payments calculated by applying either a floating or a fixed rate of interest on a stated notional amount in exchange for periodic payments made by such other Person calculated by applying a fixed or a floating rate of interest on the same notional amount and shall include, without limitation, interest rate swaps, caps, floors, collars and similar agreements.

        "Investment" means, with respect to any Person, any direct or indirect loan or other extension of credit, including a guarantee, or capital contribution to (by means of any transfer of cash or other property to others or any payment for property or services for the account or use of others), or any purchase or acquisition by such Person of any Capital Stock, bonds, notes, debentures or other securities or evidences of Indebtedness issued by, any Person. "Investment" does not include extensions of trade credit by, prepayment of expenses by, and receivables owing to, the Issuer and its Restricted Subsidiaries on commercially reasonable terms in accordance with the Issuer's normal trade practices or those of such Restricted Subsidiary, as the case may be. For purposes of the "Limitation on Restricted Payments" covenant:

        If the Issuer or any of its Restricted Subsidiaries of the Issuer sells or otherwise disposes of any Common Stock of any direct or indirect Restricted Subsidiary of the Issuer such that, after giving effect to any such sale or disposition, such Person ceases to be a Restricted Subsidiary of the Issuer, the Issuer shall be deemed to have made an Investment on the date of any such sale or disposition equal to the fair market value of the Common Stock of that Restricted Subsidiary not sold or disposed of.

        "Investment Grade Rating" means a rating equal to or higher than Baa3 (or the equivalent) by Moody's and BBB- (or the equivalent) by S&P, or an equivalent rating by any other agency referred to in clause (2) of the definition of Rating Agency.

        "Issue Date" means December 7, 2012.

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        "Lien" means any lien, mortgage, deed of trust, pledge, security interest, charge or encumbrance of any kind, including any conditional sale or other title retention agreement, any lease in the nature thereof and any agreement to give any security interest.

        "Net Cash Proceeds" means (a) with respect to any Asset Sale, the proceeds in the form of cash or Cash Equivalents including payments in respect of deferred payment obligations when received in the form of cash or Cash Equivalents (other than the portion of any such deferred payment constituting interest) received by the Issuer or any of its Restricted Subsidiaries from such Asset Sale net of:

and (b) with respect to any issuance or sale of Capital Stock, the cash proceeds of such issuance or sale, net of attorneys' fees, accountants' fees, underwriters' or placement agents' or initial purchasers' fees, discounts or commissions and brokerage, consultant and other fees and expenses actually incurred in connection with such issuance or sale and net of taxes paid or payable as a result thereof.

        "New Domestic Restricted Subsidiary" has the meaning set forth in the "Future Guarantors" covenant.

        "Obligations" means all obligations for principal, premium, interest, penalties, fees, indemnifications, reimbursements, damages and other liabilities payable under the documentation governing any Indebtedness.

        "Other Pari Passu Obligations" means any Additional Notes and any other Indebtedness that is pari passu in right of payment with the notes.

        "Permitted Business" means the business of the Issuer and the Issuer's Restricted Subsidiaries as existing on the Issue Date and any other businesses that are the same, similar or reasonably related, ancillary or complementary thereto and reasonable extensions thereof.

        "Permitted Holders" means (i) Alan S. McKim; (ii) the spouse and lineal descendants of Alan S. McKim; (iii) any controlled Affiliate of any of the foregoing; (iv) in the event of the incompetence or death of any of the Persons described in clause (i) or (ii), such Person's estate, executor, administrator, committee or other personal representative, in each case who at any particular date will beneficially own or have the right to acquire, directly or indirectly, Capital Stock of the Issuer owned by such Person; or (v) any trusts, general partnerships or limited partnerships created for the benefit of the Persons described in clause (i), (ii), or (iv) or any trust for the benefit of any such trust general partnership or limited partnership.

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        "Permitted Indebtedness" means, without duplication, each of the following:

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For purposes of determining compliance with the "Limitation on Incurrence of Additional Indebtedness" covenant,

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        "Permitted Investments" means:

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        "Permitted Liens" means the following types of Liens:

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        "Person" means an individual, partnership, corporation, limited liability company, unincorporated organization, trust or joint venture, or a governmental agency or political subdivision thereof or any other entity.

        "Preferred Stock" of any Person means any Capital Stock of such Person that has preferential rights to any other Capital Stock of such Person with respect to dividends or redemptions or upon liquidation.

        "Purchase Money Indebtedness" means Indebtedness of the Issuer and its Restricted Subsidiaries incurred in the normal course of business for the purpose of financing all or any part of the purchase price, or the cost of installation, construction or improvement, of property or equipment or other related assets and any Refinancing thereof.

        "Qualified Capital Stock" means any Capital Stock that is not Disqualified Capital Stock.

        "Qualified Receivables Transaction" means any transaction or series of transactions that may be entered into by the Issuer or any of its Restricted Subsidiaries in which the Issuer or any of its Restricted Subsidiaries may sell, convey or otherwise transfer to (1) a Receivables Entity (in the case of a transfer by the issuer or any of its Restricted Subsidiaries) and (2) any other Person (in the case of a transfer by a Receivables Entity), or may grant a security interest in Receivables and Related Assets; provided that such transaction is on market terms at the time the Issuer or such Restricted Subsidiary or the Receivables Entity entered into the transaction.

        "Rating Agency" means (1) each of Moody's and S&P and (2) solely to the extent Moody's or S&P ceases to rate the notes for reasons outside of the Issuer's control, a "nationally recognized statistical rating organization" within the meaning of Rule 15c3-1(c)(2)(vi)(F) under the Exchange Act selected by the Issuer as a replacement agency for Moody's or S&P, as the case may be.

        "Receivables and Related Assets" means any accounts receivable (whether existing on the Issue Date or arising thereafter) of the Issuer or any of its Restricted Subsidiaries, and any assets related thereto, including, without limitation, all collateral securing such accounts receivable, all contracts and contract rights and all guarantees or other obligations in respect of such accounts receivable, proceeds of such accounts receivable and other assets which are customarily transferred or in respect of which security

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interests are customarily granted in connection with asset securitization transactions involving accounts receivable.

        "Receivables Entity" means a Wholly Owned Restricted Subsidiary of the Issuer (or another Person in which the Issuer or any Subsidiary of the Issuer makes an Investment and to which the Issuer or any Subsidiary of the Issuer transfers Receivables and Related Assets) that engages in no activities other than in connection with the financing of accounts receivable and that is designated by the Board of Directors of the Issuer (as provided below) as a Receivables Entity:

        Any such designation by the Board of Directors of the Issuer shall be evidenced to the trustee by filing with the trustee a Board Resolution giving effect to such designation and an officers' certificate certifying that such designation complied with the preceding conditions.

        "Refinance" means, in respect of any security or Indebtedness, to refinance, extend, renew, refund, repay, prepay, redeem, defease or retire, or to issue a security or Indebtedness in exchange or replacement for, such security or Indebtedness in whole or in part. "Refinanced" and "Refinancing" shall have correlative meanings.

        "Refinancing Indebtedness" means any Refinancing by the Issuer or any Restricted Subsidiary of the Issuer of (A) for purposes of clause (13) of the definition of "Permitted Indebtedness," Indebtedness incurred or existing in accordance with the "Limitation on Incurrence of Additional Indebtedness" covenant (other than pursuant to clause (2), (4), (5), (6), (7), (8), (9), (10), (11), (12), (14) or (15) of the definition of "Permitted Indebtedness") or (B) for any other purpose, Indebtedness incurred in

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accordance with the "Limitation on Incurrence of Additional Indebtedness" covenant, in each case that does not:

provided that

        "Restricted Payment" has the meaning set forth in the "Limitation on Restricted Payments" covenant.

        "Restricted Subsidiary" of any Person means any Subsidiary of such Person which at the time of determination is not an Unrestricted Subsidiary.

        "Sale and Leaseback Transaction" means any direct or indirect arrangement with any Person or to which any such Person is a party, providing for the leasing to the Issuer or a Restricted Subsidiary of the Issuer of any property, whether owned by the Issuer or any Restricted Subsidiary at the Issue Date or later acquired, which has been or is to be sold or transferred by the Issuer or such Restricted Subsidiary to such Person or to any other Person from whom funds have been or are to be advanced by such Person on the security of such property.

        "Secured Notes" means the Issuer's previously outstanding 7.625% Senior Secured Notes due 2016 that were either repurchased pursuant to a tender offer and consent solicitation or redeemed in accordance with the terms of the Secured Notes Indenture.

        "Secured Notes Indenture" means the indenture, dated as of August 14, 2009, pursuant to which the Secured Notes were issued and subsequently repurchased or redeemed.

        "Secured Notes Issue Date" means August 14, 2009.

        "Significant Subsidiary" means (1) any Restricted Subsidiary that would be a "significant subsidiary" as defined in Regulation S-X under the Securities Act as such Regulation is in effect on the Issue Date and (2) any Restricted Subsidiary that, when aggregated with all other Restricted Subsidiaries that are not otherwise Significant Subsidiaries and as to which any event described in clause (6) or (7) under

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"—Events of Default" has occurred and is continuing, would constitute a Significant Subsidiary under clause (1) of this definition.

        "Subsidiary," with respect to any Person, means:

        "Treasury Rate" means, as of any redemption date, the yield to maturity as of such redemption date of United States Treasury securities with a constant maturity (as compiled and published in the most recent Federal Reserve Statistical Release H.15 (519) that has become publicly available at least two business days prior to the redemption date (or, if such Statistical Release is no longer published, any publicly available source of similar market data)) most nearly equal to the period from the redemption date to December 1, 2016; provided, however, that if the period from the redemption date to December 1, 2016 is less than one year, the weekly average yield on actually traded United States Treasury securities adjusted to a constant maturity of one year will be used.

        "Unrestricted Subsidiary" means (1) any Subsidiary of any Person that is designated an Unrestricted Subsidiary by the Board of Directors of such Person in the manner provided below and (2) any Subsidiary of an Unrestricted Subsidiary. The Board of Directors may designate any Subsidiary, including any newly acquired or newly formed Subsidiary, to be an Unrestricted Subsidiary only if:

        The Board of Directors may designate any Unrestricted Subsidiary to be a Restricted Subsidiary only if:

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        "Weighted Average Life to Maturity" means, when applied to any Indebtedness at any date, the number of years obtained by dividing

        "Wholly Owned Restricted Subsidiary" of any Person means any Restricted Subsidiary of such Person of which all the outstanding voting securities (other than in the case of a Foreign Restricted Subsidiary, directors' qualifying shares or an immaterial amount of shares required to be owned by other Persons pursuant to applicable law) are owned by such Person or any Wholly Owned Restricted Subsidiary of such Person.

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UNITED STATES FEDERAL INCOME AND ESTATE TAX CONSIDERATIONS

        TO COMPLY WITH TREASURY DEPARTMENT CIRCULAR 230, INVESTORS ARE HEREBY NOTIFIED THAT: (A) ANY DISCUSSION OF FEDERAL TAX ISSUES IN THIS PROSPECTUS IS NOT INTENDED OR WRITTEN TO BE USED, AND CANNOT BE USED BY ANY TAXPAYER, FOR THE PURPOSE OF AVOIDING PENALTIES THAT MAY BE IMPOSED ON THE TAXPAYER UNDER THE INTERNAL REVENUE CODE OF 1986, AS AMENDED; (B) ANY SUCH DISCUSSION IS INCLUDED HEREIN IN CONNECTION WITH THE PROMOTION OR MARKETING (WITHIN THE MEANING OF CIRCULAR 230) OF THE TRANSACTIONS OR MATTERS ADDRESSED HEREIN; AND (C) A TAXPAYER SHOULD SEEK ADVICE BASED ON THE TAXPAYER'S PARTICULAR CIRCUMSTANCES FROM AN INDEPENDENT TAX ADVISOR.

        The following is a summary of the material United States federal income and, in the case of non-U.S. holders (as defined below), estate tax considerations that may be relevant to the exchange, ownership and disposition of the notes. This summary is based on the Internal Revenue Code of 1986, as amended (the "Code"), the Treasury regulations promulgated thereunder and administrative and judicial interpretations thereof, all as of the date hereof, and all of which are subject to change, possibly on a retroactive basis. We have not and will not seek a ruling from the Internal Revenue Service (the "IRS") regarding the matters discussed below, and we cannot assure you that the IRS will not challenge one or more of the tax considerations described herein.

        Unless otherwise stated, this summary deals only with the new notes offered to be exchanged for old notes purchased for cash on original issue at their issue price (as defined below) and held as capital assets (generally, property held for investment) and does not address tax considerations applicable to investors that may be subject to special tax rules including banks, thrifts, real estate investment trusts, regulated investment companies, tax exempt organizations, insurance companies, dealers in securities or currencies, traders in securities that elect to use the mark-to-market method of accounting for their securities holdings, persons that will hold the notes as part of a hedging transaction, "straddle," "synthetic security" or "conversion transaction" for tax purposes, partnerships or other pass through entities for U.S. federal income tax purposes (or investors in such entities), U.S. expatriates, or U.S. holders (as defined below) that have a "functional currency" other than the U.S. dollar. If an entity treated as a partnership for United States federal income tax purposes holds the notes, the tax treatment of a partner will generally depend on the status of the partner and the activities of the partnership. If you are a partner of a partnership holding the notes, you should consult your own tax advisor. Further, this summary does not discuss alternative minimum tax consequences, if any, or any state, local or foreign tax consequences to holders of the notes.

U.S. Holders of Notes

        For purposes of this summary, a "U.S. holder" means the beneficial owner of a note that is for United States federal income tax purposes:

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        The discussion herein assumes that a U.S. holder will not make an election to treat stated interest on the notes as original issue discount (as discussed below).

        Stated Interest.    Payments of stated interest on a note generally will be taxable to a U.S. holder as ordinary interest income at the time such payments are accrued or are received in accordance with the holder's regular method of tax accounting.

        Amortizable Bond Premium.    With some exceptions, a U.S. holder may elect to amortize any bond premium paid for the notes. For this purpose, a holder is deemed to have acquired the notes at a premium if the holder's basis in the notes (immediately after their acquisition by the holder) exceeds the sum of all amounts payable on the notes after the acquisition date, other than payments of qualified stated interest. However, because we may call the notes under certain circumstances at a price in excess of their principal amount, the deduction for amortizable bond premium may be reduced or eliminated. Holders should consult their own tax advisors regarding the availability of the deduction for amortizable bond premium.

        Sale, Exchange or Other Disposition of Notes.    Subject to the discussion below under "The Exchange Offer," upon the sale, exchange, redemption, retirement or other taxable disposition of a note, a U.S. holder will generally recognize taxable capital gain or loss equal to the difference between (A) the amount of cash proceeds and the fair market value of any property received (except to the extent that this amount is attributable to accrued but unpaid stated interest, which is taxable as ordinary income as discussed above) and (B) the holder's adjusted tax basis in the note. The U.S. holder's adjusted tax basis in a note generally will be such holder's original cost. The gain or loss will generally be long-term capital gain or loss provided that the holder's holding period for the note exceeds one year. In the case of a holder other than a corporation, the current maximum marginal United States federal income tax rate applicable to long term capital gain recognized on the sale of a note is 20%. The deductibility of capital losses is subject to certain limitations.

        The Exchange Offer.    The exchange of the old notes for new notes pursuant to the exchange offer will not constitute an exchange or other taxable disposition for United States federal income tax purposes. Therefore, a holder will have the same issue price, holding period and adjusted tax basis in the new note as in the note surrendered. In addition, each holder of notes will continue to be required to include interest on the notes in its gross income in accordance with its regular method of accounting for United States federal income tax purposes, and all other United States federal income tax consequences of holding and disposing of new notes will be the same as the United States federal income tax consequences of holding and disposing of old notes.

        Information Reporting and Backup Withholding Tax.    In general, information reporting requirements will apply to payments of interest on the notes and the proceeds of a sale or other disposition (including a retirement or redemption) of the notes. A U.S. holder will generally be subject to backup withholding (currently at a rate of 28%) on such payments and proceeds unless the holder provides to us or our paying agent a correct taxpayer identification number and certain other information, certified under penalties of perjury, or the holder otherwise establishes an exemption.

        Any amounts withheld under the backup withholding rules from a payment to a U.S. holder will be allowed as a credit against the holder's United States federal income tax and may entitle the holder to a refund, provided that the required information is timely furnished to the IRS.

Non-U.S. Holders of Notes

        Except as modified for estate tax purposes, for purposes of this summary, a "non-U.S. holder" means a beneficial owner of a note that is an individual, corporation, estate or trust and is not a U.S. holder (as defined above).

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        Interest Income.    Generally, interest income of a non-U.S. holder will qualify for the "portfolio interest" exemption and therefore will not be subject to United States federal income tax or withholding tax, provided that:

        If the non-U.S. holder is a foreign corporation, interest will qualify for the "portfolio interest" exemption only if it is received on an obligation that is issued in registered form and either: (1) the beneficial owner has provided the withholding agent with a statement certifying that the beneficial owner is not a U.S. person on a form in the Form W-8 series; or (2) the IRS has determined that the statement described above is not needed to carry out the purposes of the "portfolio interest" exemption.

        If the non-U.S. holder cannot satisfy the requirements described above, payments of interest made to such holder will be subject to the 30% United States federal withholding tax, unless the non-U.S. holder provides to us a properly executed (1) IRS Form W-8BEN (or successor form) claiming an exemption from or reduction in withholding under the benefit of an applicable income tax treaty or (2) IRS Form W-8ECI (or successor form) stating that interest paid on a note is not subject to withholding tax because it is effectively connected with the non-U.S. holder's conduct of a trade or business in the United States.

        If any interest on the notes is effectively connected with a U.S. trade or business conducted by a non-U.S. holder, such non-U.S. holder will be subject to United States federal income tax generally in the same manner as a U.S. holder (unless an applicable income tax treaty provides otherwise). If a non-U.S. holder is eligible for the benefits of an income tax treaty between the United States and its country of residence, any "effectively connected" income will generally be subject to United States federal income tax only if it is also attributable to a permanent establishment maintained by such non-U.S. holder in the United States. If a non-U.S. holder is a corporation, that portion of its earnings and profits that is effectively connected with its U.S. trade or business also may be subject to a "branch profits tax" at a 30% rate, although an applicable income tax treaty may provide for a lower rate.

        If interest received with respect to the notes is effectively connected income (whether or not a treaty applies), the 30% withholding tax described above will not apply (assuming an appropriate certification is provided).

        Sale, Exchange or Disposition of Notes.    Subject to the discussion of backup withholding below, a non-U.S. holder generally will not be subject to United States federal income tax or withholding tax on

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any gain realized on the sale, exchange, redemption, retirement, or other taxable disposition of the notes unless:

        Information Reporting and Backup Withholding.    Payments to a non-U.S. holder of interest on a note, and amounts withheld from such payments, if any, generally will be required to be reported to the IRS and to the non-U.S. holder. Copies of the information returns reporting such interest payments and any withholding may also be made available to the tax authorities in the country in which the non-U.S. holder resides under the provisions of an applicable income tax treaty.

        Backup withholding at a rate of 28% generally will not apply to interest payments on the notes to a non-U.S. holder if such holder has complied with the applicable certification requirements described in subparagraph (5) in the "Interest Income" section above or otherwise establishes an exemption under the applicable Treasury regulations.

        Payment of the proceeds of a sale or other disposition (including a retirement or redemption) of a note effected by the United States office of a United States or foreign broker will be subject to information reporting requirements and backup withholding unless the non-U.S. holder properly certifies under penalties of perjury as to its foreign status or the non-U.S. holder otherwise establishes an exemption. Information reporting requirements and backup withholding generally will not apply to any payment of the proceeds of a sale or other disposition of a note effected outside the United States by a foreign office of a broker. However, unless such a broker has documentary evidence in its records that the beneficial owner is a non-U.S. holder and certain other conditions are met, or a non-U.S. holder otherwise establishes an exemption, information reporting will apply to a payment of the proceeds of a sale or other disposition of a note effected outside the United States by such a broker if the broker:

        Backup withholding is not an additional tax. Any amount withheld under the backup withholding rules may be credited against the holder's United States federal income tax liability and any excess may be refundable if the proper information is timely provided to the IRS.

        United States Federal Estate Tax.    The notes will not be included in the estate of a deceased non-U.S. holder (as specifically defined for United States federal estate tax purposes) if interest payments to such non-U.S. holder would be exempt from withholding of United States federal income

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tax under the portfolio interest exemption discussed above (without regard to the certification requirement).

        The United States federal income and estate tax discussion set forth above is included for general information only. Holders should consult their own tax advisors with respect to the tax consequences to them of the exchange, ownership and disposition of the notes, including the tax consequences under state, local, foreign and other tax laws and any proposed change in applicable laws.


PLAN OF DISTRIBUTION

        Each broker-dealer that receives new notes for its own account in connection with the exchange offer must acknowledge that it will deliver a prospectus in connection with any resale of those new notes. A broker-dealer may use this prospectus, as amended or supplemented from time to time, in connection with resales of new notes received in exchange for old notes where such broker-dealer acquired old notes as a result of market-making activities or other trading activities. We have agreed that for a period of 180 days after the expiration date of the exchange offer, we will make available a prospectus, as amended or supplemented, meeting the requirements of the Securities Act to any broker-dealer for use in connection with those resales.

        We will not receive any proceeds from any sale of new notes by broker-dealers. Broker-dealers may sell new notes received by them for their own account pursuant to the exchange offer from time to time in one or more transactions in the over-the-counter market, in negotiated transactions, through the writing of options on the new notes or a combination of those methods of resale, at market prices prevailing at the time of resale, at prices related to such prevailing market prices or negotiated prices. Any such resale may be made directly to purchasers or to or through brokers or dealers who may receive compensation in the form of commissions or concessions from any broker-dealer or the purchasers of any new notes. Any broker-dealer that resells new notes that were received by it for its own account pursuant to the exchange offer and any broker or dealer that participates in a distribution of such new notes may be deemed to be an "underwriter" within the meaning of the Securities Act. A profit on any such resale of new notes and any commissions or concessions received by any such persons may be deemed to be underwriting compensation under the Securities Act. The letter of transmittal states that, by acknowledging that it will deliver and by delivering a prospectus, a broker-dealer will not be deemed to admit that it is an "underwriter" within the meaning of the Securities Act.

        For a period of 180 days after the expiration date of the exchange offer, we will promptly send additional copies of this prospectus and any amendment or supplement to this prospectus to any broker-dealer that requests these documents in the letter of transmittal. We will indemnify the holders of the old notes, including any broker-dealers, against specified liabilities, including liabilities under the Securities Act.


LEGAL MATTERS

        Davis, Malm & D'Agostine, P.C., Boston, Massachusetts, has passed upon the validity and enforceability of the new notes and the guarantees for Clean Harbors and the Guarantors. As of March 31, 2013, shareholders in Davis, Malm & D'Agostine, P.C., beneficially owned an aggregate of 14,000 shares of our common stock (including 3,000 shares owned by, or for the benefit of, members of their immediate families).


EXPERTS

        The consolidated financial statements and related financial statement schedule of Clean Harbors, Inc. and subsidiaries incorporated in this prospectus by reference from Clean Harbors, Inc.'s Annual Report on Form 10-K for the year ended December 31, 2012, and the effectiveness of Clean Harbors, Inc. and subsidiaries' internal control over financial reporting have been audited by

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Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their reports, which are incorporated herein by reference. Such consolidated financial statements and financial statement schedule have been so incorporated in reliance upon the reports of such firm given upon their authority as experts in accounting and auditing.

        The audited consolidated financial statements of Safety-Kleen, Inc. as of December 25, 2010 and December 31, 2011, and for each of the years in the three-year period ended December 31, 2011, incorporated by reference in this prospectus from Clean Harbors, Inc.'s Report on Form 8-K filed with the Securities and Exchange Commission on January 4, 2013, have been so incorporated in reliance upon the report of KPMG LLP, independent registered public accounting firm, and upon the authority of said firm as experts in accounting and auditing.

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PART II

INFORMATION NOT REQUIRED IN THE PROSPECTUS

Item 20.    Indemnification of Directors and Officers

        Sections 8.51 and 8.52 of the Massachusetts Business Corporation Act, as amended, give Massachusetts corporations the power to indemnify each of their present and former officers or directors, and present and former officers and directors of the subsidiaries, under certain circumstances if such person acted in good faith and in a manner which he or she reasonably believed to be in or not opposed to the best interest of the corporation. In its Restated Articles of Organization and By-Laws, the Registrant provides for such indemnification of its present and former officers and directors, and present and former officers and directors of its subsidiaries, to the extent permitted by law. Reference is made to Article 6 of the Registrant's Restated Articles of Organization filed as Exhibit 3.1A to the Registrant's Report on Form 8-K filed on May 19, 2005, and Article VII of the Registrant's Amended and Restated By-Laws filed as Exhibits 3.4C to the Registrant's Report on Form 8-K filed on December 6, 2011, each of which is incorporated herein by reference, for the applicable provisions regarding the indemnification of directors and officers.

        The Registrant also maintains director and officer liability insurance which provides for protection of its directors and officers and directors and officers of its subsidiaries, against liabilities and costs which they may incur in such capacities, including liabilities arising under the Securities Act of 1933, as amended.

Item 21.    Exhibits and Financial Statement Schedules

(a)
Exhibits

        See the Exhibit Index commencing on page II-23, which is incorporated herein by reference.

(b)
Financial Statement Schedules

        Schedule II—Valuation and Qualifying Accounts for the Three Years Ended December 31, 2012. All other schedules are omitted because they are not applicable, not required, or because the required information is included in the financial statements or notes thereto.

Item 22.    Undertakings

        The undersigned Registrant hereby undertakes:

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REGISTRANT SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant has duly caused this Amendment to Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts on April 3, 2013.

    Clean Harbors, Inc.

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge
Vice Chairman, President and
Chief Financial Officer


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and directors of Clean Harbors, Inc., hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to any of them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and directors to enable Clean Harbors, Inc. to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ ALAN S. MCKIM

Alan S. McKim
  Chairman of the Board of Directors and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Vice Chairman of the Board of Directors, Chief Financial Officer and President

 

April 3, 2013

/s/ JOHN R. BEALS

John R. Beals

 

Senior Vice President, Controller and Chief Accounting Officer

 

April 3, 2013

/s/ EUGENE BANUCCI

Eugene Banucci

 

Director

 

April 3, 2013

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Signature
 
Title
 
Date

 

 

 

 

 
/s/ JOHN P. DEVILLARS

John P. DeVillars
  Director   April 3, 2013

/s/ EDWARD G. GALANTE

Edward G. Galante

 

Director

 

April 3, 2013

/s/ JOHN F. KASLOW

John F. Kaslow

 

Director

 

April 3, 2013

/s/ ROD MARLIN

Rod Marlin

 

Director

 

April 3, 2013

/s/ DANIEL J. MCCARTHY

Daniel J. McCarthy

 

Director

 

April 3, 2013

/s/ JOHN T. PRESTON

John T. Preston

 

Director

 

April 3, 2013

/s/ ANDREA ROBERTSON

Andrea Robertson

 

Director

 

April 3, 2013

/s/ THOMAS J. SHIELDS

Thomas J. Shields

 

Director

 

April 3, 2013

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GUARANTOR REGISTRANTS SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrants have duly caused this Registration Statement to be signed on their behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Altair Disposal Services, LLC
    Baton Rouge Disposal, LLC
    Bridgeport Disposal, LLC
    Clean Harbors Andover, LLC
    Clean Harbors Antioch, LLC
    Clean Harbors Aragonite, LLC
    Clean Harbors Arizona, LLC
    Clean Harbors Baton Rouge, LLC
    Clean Harbors BDT, LLC
    Clean Harbors Buttonwillow, LLC
    Clean Harbors Chattanooga, LLC
    Clean Harbors Clive, LLC
    Clean Harbors Coffeyville, LLC
    Clean Harbors Colfax, LLC
    Clean Harbors Deer Park, LLC
    Clean Harbors Deer Trail, LLC
    Clean Harbors El Dorado, LLC
    Clean Harbors Florida, LLC
    Clean Harbors Grassy Mountain, LLC
    Clean Harbors Kansas, LLC
    Clean Harbors LaPorte, LLC
    Clean Harbors Laurel, LLC
    Clean Harbors Lone Mountain, LLC
    Clean Harbors Los Angeles, LLC
    Clean Harbors Pecatonica, LLC
    Clean Harbors PPM, LLC
    Clean Harbors Recycling Services of Chicago, LLC
    Clean Harbors Recycling Services of Ohio, LLC
    Clean Harbors Reidsville, LLC
    Clean Harbors San Jose, LLC
    Clean Harbors Tennessee, LLC
    Clean Harbors Westmorland, LLC
    Clean Harbors White Castle, LLC
    Clean Harbors Wilmington, LLC
    Crowley Disposal, LLC
    Disposal Properties, LLC
    GSX Disposal, LLC
    Hilliard Disposal, LLC
    Roebuck Disposal, LLC
    Sawyer Disposal Services, LLC
    Service Chemical, LLC
    Tulsa Disposal, LLC

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President

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SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and managers of each of the Guarantor Registrants listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and managers to enable each of said Guarantor Registrants to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ ERIC W. GERSTENBERG

Eric W. Gerstenberg
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ ERIC W. GERSTENBERG

Eric W. Gerstenberg

 

Manager

 

April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Manager

 

April 3, 2013

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GUARANTOR REGISTRANTS SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrants have duly caused this Registration Statement to be signed on their behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    ARC Advanced Reactors and Columns, LLC
    Clean Harbors Catalyst Technologies, LLC

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and managers of each of the Guarantor Registrants listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and managers to enable each of said Guarantor Registrants to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ DAVID M. PARRY

David M. Parry
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Manager

 

April 3, 2013

/s/ DAVID M. PARRY

David M. Parry

 

Manager

 

April 3, 2013

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GUARANTOR REGISTRANT SIGNATURE

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    CH International Holdings, LLC

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and manager of the Guarantor Registrant listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and manager to enable each of said Guarantor Registrants to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Name
 
Title
 
Date

 

 

 

 

 
/s/ JERRY E. CORRELL

Jerry E. Correll
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Manager

 

April 3, 2013

II-9


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GUARANTOR REGISTRANT SIGNATURE

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrant has duly caused this Registration Statement to be signed on their behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Clean Harbors Development, LLC

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and managers of the Guarantor Registrant listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and managers to enable said Guarantor Registrant to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Name
 
Title
 
Date

 

 

 

 

 
/s/ WILLIAM J. GEARY

William J. Geary
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ ERIC W. GERSTENBERG

Eric W. Gerstenberg

 

Manager

 

April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Manager

 

April 3, 2013

II-10


Table of Contents

Name
 
Title
 
Date

 

 

 

 

 
/s/ WILLIAM J. GEARY

William J. Geary
  Manager   April 3, 2013

/s/ ALAN S. MCKIM

Alan S. McKim

 

Manager

 

April 3, 2013

II-11


Table of Contents


GUARANTOR REGISTRANTS SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrants have duly caused this Registration Statement to be signed on their behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Clean Harbors Disposal Services, Inc.
Clean Harbors of Baltimore, Inc.
Clean Harbors of Connecticut, Inc.
DuraTherm, Inc.
Spring Grove Resource Recovery, Inc.

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and directors of the Guarantor Registrants listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and directors to enable each of said Guarantor Registrants to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ ERIC W. GERSTENBERG

Eric W. Gerstenberg
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ ERIC W. GERSTENBERG

Eric W. Gerstenberg

 

Director

 

April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Director

 

April 3, 2013

II-12


Table of Contents


GUARANTOR REGISTRANTS SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrants have duly caused this Registration Statement to be signed on their behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Clean Harbors Lone Star Corp.
Clean Harbors (Mexico), Inc.
Clean Harbors of Braintree, Inc.
Clean Harbors Services, Inc.

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and director of the Guarantor Registrants listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and director to enable each of said Guarantor Registrants to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ ERIC W. GERSTENBERG

Eric W. Gerstenberg
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ ALAN S. MCKIM

Alan S. McKim

 

Director

 

April 3, 2013

II-13


Table of Contents


GUARANTOR REGISTRANT SIGNATURE

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Clean Harbors Environmental Services, Inc.

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and directors of the Guarantor Registrant listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and directors to enable said Guarantor Registrant to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ ERIC W. GERSTENBERG

Eric W. Gerstenberg
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ ERIC W. GERSTENBERG

Eric W. Gerstenberg

 

Director

 

April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Director

 

April 3, 2013

/s/ ALAN S. MCKIM

Alan S. McKim

 

Director

 

April 3, 2013

II-14


Table of Contents


GUARANTOR REGISTRANT SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Clean Harbors Exploration Services, Inc.

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and directors of the Guarantor Registrant listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and directors to enable said Guarantor Registrant to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ MARVIN LEFEBVRE

Marvin LeFebvre
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ DAVID M. PARRY

David M. Parry

 

Director

 

April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Director

 

April 3, 2013

II-15


Table of Contents


GUARANTOR REGISTRANT SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Clean Harbors Industrial Services, Inc.

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and directors of the Guarantor Registrant listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and directors to enable said Guarantor Registrant to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ DAVID M. PARRY

David M. Parry
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ DAVID M. PARRY

David M. Parry

 

Director

 

April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Director

 

April 3, 2013

II-16


Table of Contents


GUARANTOR REGISTRANT SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Clean Harbors Kingston Facility Corporation

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and director of the Guarantor Registrant listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and director to enable said Guarantor Registrant to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ BRIAN WEBER

Brian Weber
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ ALAN S. MCKIM

Alan S. McKim

 

Director

 

April 3, 2013

II-17


Table of Contents


GUARANTOR REGISTRANTS SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrants has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Murphy's Waste Oil Service, Inc.

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and directors of the Guarantor Registrant listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and directors to enable said Guarantor Registrant to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ BRIAN WEBER

Brian Weber
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ ERIC W. GERSTENBERG

Eric W. Gerstenberg

 

Director

 

April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Director

 

April 3, 2013

II-18


Table of Contents


GUARANTOR REGISTRANT SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrants have duly caused this Registration Statement to be signed on their behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Peak Energy Services USA, Inc.
Sanitherm USA, Inc.

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and directors of the Guarantor Registrants listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and directors to enable each of said Guarantor Registrants to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ DAVID M. PARRY

David M. Parry
  President and Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President, Treasurer and Chief Financial and Accounting Officer

 

April 3, 2013

/s/ DAVID M. PARRY

David M. Parry

 

Director

 

April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Director

 

April 3, 2013

II-19


Table of Contents


GUARANTOR REGISTRANT SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrants have duly caused this Registration Statement to be signed on their behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Safety-Kleen, Inc.
Safety-Kleen Systems, Inc.
SK Holding Company, Inc.
Safety-Kleen Envirosystems Company
Safety-Kleen Envirosystems Company of Puerto Rico, Inc.
Safety-Kleen International, Inc.
The Solvents Recovery Service of New Jersey, Inc.

 

 

By:

 

/s/ JAMES M. RUTLEDGE

James M. Rutledge,
Executive Vice President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and directors of the Guarantor Registrants listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and directors to enable each of said Guarantor Registrants to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ ALAN S. MCKIM

Alan S. McKim
  Chief Executive Officer   April 3, 2013

/s/ JAMES M. RUTLEDGE

James M. Rutledge

 

Executive Vice President and Chief Financial Officer

 

April 3, 2013

/s/ JOHN BEALS

John Beals

 

Chief Accounting Officer

 

April 3, 2013

II-20


Table of Contents

Signature
 
Title
 
Date

 

 

 

 

 
/s/ JAMES M. RUTLEDGE

James M. Rutledge
  Director   April 3, 2013

/s/ ERIC GERSTENBERGER

Eric Gerstenberger

 

Director

 

April 3, 2013

II-21


Table of Contents


GUARANTOR REGISTRANT SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned Guarantor Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Norwell, Commonwealth of Massachusetts, on April 3, 2013.

    Plaquemine Remediation Services, LLC

 

 

By:

 

/s/ MICHAEL R. MCDONALD

Michael R. McDonald,
President


SIGNATURES AND POWER OF ATTORNEY

        We, the undersigned officers and manager of the Guarantor Registrant listed above, hereby severally constitute and appoint James M. Rutledge, John R. Beals and C. Michael Malm, and each of them singly, our true and lawful attorneys with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-4 filed herewith and any and all pre-effective and post-effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and manager to enable said Guarantor Registrant to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

        Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature
 
Title
 
Date

 

 

 

 

 
/s/ MICHAEL R. MCDONALD

Michael R. McDonald
  President, Treasurer, Secretary and Chief Executive, Financial and Accounting Officer   April 3, 2013

/s/ MICHAEL R. MCDONALD

Michael R. McDonald

 

Manager

 

April 3, 2013

II-22


Table of Contents


EXHIBIT INDEX

Exhibit No.   Description of Exhibit
  3.1A   Restated Articles of Organization of Clean Harbors, Inc. (incorporated by reference to Exhibit 3.1A to the Registrant's Report on Form 8-K filed on May 19, 2005 (File No. 001-34223)).
        
  3.1B   Articles of Amendment [as filed on May 9, 2011] to Restated Articles of Organization of Clean Harbors, Inc. (incorporated by reference to Exhibit 3.1B to the Registrant's Report on Form 8-K filed on May 12, 2011 (File No. 001-34223)).
        
  3.4B   Amended and Restated By-Laws of Clean Harbors, Inc. (incorporated by reference to Exhibit 3.4C to the Registrant's Report on Form 8-K filed on December 6, 2011 (File No. 001-34223)).
        
  3.5 * Certificate of Organization and LLC Agreement of Altair Disposal Services, LLC
        
  3.6 * Certificate of Organization and LLC Agreement of ARC Advanced Reactors and Columns, LLC
        
  3.7 * Certificate of Organization and LLC Agreement of Baton Rouge Disposal, LLC
        
  3.8 * Certificate of Organization and LLC Agreement of Bridgeport Disposal, LLC
        
  3.9 * Certificate of Organization and LLC Agreement of CH International Holdings, LLC
        
  3.10 * Certificate of Incorporation and By-Laws of Clean Harbors (Mexico), Inc.
        
  3.11 * Certificate of Organization and LLC Agreement of Clean Harbors Andover, LLC
        
  3.12 * Certificate of Organization and LLC Agreement of Clean Harbors Antioch, LLC
        
  3.13 * Certificate of Organization and LLC Agreement of Clean Harbors Aragonite, LLC
        
  3.14 * Certificate of Organization and LLC Agreement of Clean Harbors Arizona, LLC
        
  3.15 * Certificate of Organization and LLC Agreement of Clean Harbors Baton Rouge, LLC
        
  3.16 * Certificate of Organization and LLC Agreement of Clean Harbors BDT, LLC
        
  3.17 * Certificate of Organization and LLC Agreement of Clean Harbors Buttonwillow, LLC
        
  3.18 * Certificate of Organization and LLC Agreement of Clean Harbors Catalyst Technologies, LLC
        
  3.19 * Certificate of Organization and LLC Agreement of Clean Harbors Chattanooga, LLC
        
  3.20 * Certificate of Organization and LLC Agreement of Clean Harbors Clive, LLC
        
  3.21 * Certificate of Organization and LLC Agreement of Clean Harbors Coffeyville, LLC
        
  3.22 * Certificate of Organization and LLC Agreement of Clean Harbors Colfax, LLC
        
  3.23 * Certificate of Organization and LLC Agreement of Clean Harbors Deer Park, LLC
        
  3.24 * Certificate of Organization and LLC Agreement of Clean Harbors Deer Trail, LLC
        
  3.25 * Certificate of Organization and LLC Agreement of Clean Harbors Development, LLC
        
  3.26 * Certificate of Incorporation and By-Laws of Clean Harbors Disposal Services, Inc.
        
  3.27 * Certificate of Organization and LLC Agreement of Clean Harbors El Dorado, LLC
        
  3.28 * Articles of Incorporation and By-Laws of Clean Harbors Environmental Services, Inc.

II-23


Table of Contents

Exhibit No.   Description of Exhibit
  3.29 * Certificate of Incorporation and By-Laws of Clean Harbors Exploration Services, Inc.
        
  3.30 * Certificate of Organization and LLC Agreement of Clean Harbors Florida, LLC
        
  3.31 * Certificate of Organization and LLC Agreement of Clean Harbors Grassy Mountain, LLC
        
  3.32 * Certificate of Incorporation and By-Laws of Clean Harbors Industrial Services, Inc.
        
  3.33 * Certificate of Organization and LLC Agreement of Clean Harbors Kansas, LLC
        
  3.34 * Articles of Incorporation and By-Laws of Clean Harbors Kingston Facility Corporation
        
  3.35 * Certificate of Organization and LLC Agreement of Clean Harbors LaPorte, LLC
        
  3.36 * Certificate of Organization and LLC Agreement of Clean Harbors Laurel, LLC
        
  3.37 * Certificate of Organization and LLC Agreement of Clean Harbors Lone Mountain, LLC
        
  3.38 * Certificate of Incorporation and By-Laws of Clean Harbors Lone Star Corp.
        
  3.39 * Certificate of Organization and LLC Agreement of Clean Harbors Los Angeles, LLC
        
  3.40 * Certificate of Incorporation and By-Laws of Clean Harbors of Baltimore, Inc.
        
  3.41 * Articles of Incorporation and By-Laws of Clean Harbors of Braintree, Inc.
        
  3.42 * Certificate of Incorporation and By-Laws of Clean Harbors of Connecticut, Inc.
        
  3.43 * Certificate of Organization and LLC Agreement of Clean Harbors Pecatonica, LLC
        
  3.44 * Certificate of Organization and LLC Agreement of Clean Harbors PPM, LLC
        
  3.45 * Certificate of Organization and LLC Agreement of Clean Harbors Recycling Services of Chicago, LLC
        
  3.46 * Certificate of Organization and LLC Agreement of Clean Harbors Recycling Services of Ohio, LLC
        
  3.47 * Certificate of Organization and LLC Agreement of Clean Harbors Reidsville, LLC
        
  3.48 * Certificate of Organization and LLC Agreement of Clean Harbors San Jose, LLC
        
  3.49 * Articles of Incorporation and By-Laws of Clean Harbors Services, Inc.
        
  3.50 * Certificate of Organization and LLC Agreement of Clean Harbors Tennessee, LLC
        
  3.51 * Certificate of Organization and LLC Agreement of Clean Harbors Westmorland, LLC
        
  3.52 * Certificate of Organization and LLC Agreement of Clean Harbors White Castle, LLC
        
  3.53 * Certificate of Organization and LLC Agreement of Clean Harbors Wilmington, LLC
        
  3.54 * Certificate of Organization and LLC Agreement of Crowley Disposal, LLC
        
  3.55 * Certificate of Organization and LLC Agreement of Disposal Properties, LLC
        
  3.56 * Certificate of Incorporation and By-Laws of DuraTherm, Inc.
        
  3.57 * Certificate of Organization and LLC Agreement of GSX Disposal, LLC
        
  3.58 * Certificate of Organization and LLC Agreement of Hilliard Disposal, LLC
        
  3.59 * Articles of Incorporation and By-Laws of Murphy's Waste Oil Service, Inc.
        
  3.60 * Certificate of Incorporation and By-Laws of Peak Energy Services USA, Inc.

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Table of Contents

Exhibit No.   Description of Exhibit
  3.61 * Certificate of Organization and LLC Agreement of Plaquemine Remediation Services, LLC
        
  3.62 * Certificate of Organization and LLC Agreement of Roebuck Disposal, LLC
        
  3.63 * Certificate of Incorporation and By-Laws of Sanitherm USA, Inc.
        
  3.64 * Certificate of Organization and LLC Agreement of Sawyer Disposal Services, LLC
        
  3.65 * Certificate of Organization and LLC Agreement of Service Chemical, LLC
        
  3.66 * Certificate of Incorporation and By-Laws of Spring Grove Resource Recovery, Inc.
        
  3.67 * Certificate of Organization and LLC Agreement of Tulsa Disposal, LLC
        
  3.68 ** Certificate of Incorporation and By-Laws of Safety-Kleen, Inc.
        
  3.69 ** Articles of Incorporation and By-Laws of Safety-Kleen Systems, Inc.
        
  3.70 ** Certificate of Incorporation and By-Laws of SK Holding Company, Inc.
        
  3.71 ** Articles of Incorporation and By-Laws of Safety-Kleen Envirosystems Company
        
  3.72 ** Certificate of Incorporation and By-Laws of Safety-Kleen Envirosystems Company of Puerto Rico, Inc.
        
  3.73 ** Certificate of Incorporation and By-Laws of Safety-Kleen International, Inc.
        
  3.74 ** Certificate of Incorporation and By-Laws of The Solvents Recovery Service of New Jersey, Inc.
        
  4.1   Indenture dated as of December 7, 2012, by and among Clean Harbors, Inc., as Issuer, the subsidiaries named therein as Guarantors, and U.S. Bank National Association, as Trustee, relating to the 5.125% Senior Notes due 2021, including the form of 5.125% Senior Note due 2021 (incorporated by reference to Exhibit 4.42 to the Registrant's Report on Form 8-K filed on December 10, 2012 (File No. 001-34223)).
        
  4.2   Registration Rights Agreement dated December 7, 2012 between Clean Harbors, Inc., the domestic subsidiaries of Clean Harbors, Inc. as guarantors, Goldman Sachs & Co., Merrill Lynch, Pierce Fenner & Smith Incorporated and Credit Suisse (USA) LLC), (incorporated by reference to Exhibit 4.43 to the Registrant's Report on Form 8-K filed on December 10, 2012 (File No. 001-34223)).
        
  4.3   Fourth Amended and Restated Credit Agreement dated as of January 17, 2013 among Clean Harbors, Inc., as the U.S. Borrower, Clean Harbors Industrial Services Canada, Inc., as the Canadian Borrower, Bank of America, N.A., as Administrative Agent, and the Lenders party thereto (incorporated by reference to Exhibit 4.33E-1 to the Registrant's Report on Form 8-K filed on January 18, 2013 (File No. 001-34223)).
        
  4.4   Guarantee (U.S. Domiciled Loan Parties—U.S. Facility Obligations) dated as of May 31, 2011 executed by the U.S. Domiciled Subsidiaries of Clean Harbors, Inc. named therein in favor of Bank of America, N.A., as Agent for itself and the other U.S. Facility Secured Parties (incorporated by reference to Exhibit 4.33F to the Registrant's Report on Form 8-K filed on June 3, 2011 (File No. 001-34223)).
        
  4.5   Guarantee (Canadian Domiciled Loan Parties—Canadian Facility Obligations) dated as of May 31, 2011 executed by the Canadian Domiciled Subsidiaries of Clean Harbors, Inc. named therein in favor of Bank of America, N.A., as Agent for itself and the other Canadian Facility Secured Parties (incorporated by reference to Exhibit 4.33G to the Registrant's Report on Form 8-K filed on June 3, 2011 (File No. 001-34223)).

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Table of Contents

Exhibit No.   Description of Exhibit
  4.6   Guarantee (U.S. Domiciled Loan Parties—Canadian Facility Obligations) dated as of May 31, 2011 executed by Clean Harbors, Inc. and the U.S. Domiciled Subsidiaries of Clean Harbors, Inc. named therein in favor of Bank of America, N.A., as Agent for itself and the other Canadian Facility Secured Parties (incorporated by reference to Exhibit 4.33H to the Registrant's Report on Form 8-K filed on June 3, 2011 (File No. 001-34223)).
        
  4.7   Security Agreement (U.S. Domiciled Loan Parties) dated as of January 17, 2013 among Clean Harbors, Inc., as the U.S. Borrower and a Grantor, the subsidiaries of Clean Harbors, Inc. listed on Annex A thereto or that thereafter become a party thereto as Grantors, and Bank of America, N.A., as Agent (incorporated by reference to Exhibit 4.33I to the Registrant's Report on Form 8-K filed on January 18, 2013 (File No. 001-34223)).
        
  4.8   Security Agreement (Canadian Domiciled Loan Parties) dated as of May 31, 2011 among Clean Harbors Industrial Services Canada, Inc., as the Canadian Borrower and a Grantor, the Canadian subsidiaries of Clean Harbors, Inc. listed on Annex A thereto or that thereafter become a party thereto as Grantors, and Bank of America, N.A., as Agent (incorporated by reference to Exhibit 4.33J to the Registrant's Report on Form 8-K filed on June 3, 2011 (File No. 001-34223)).
        
  5.1 ** Opinion of Davis, Malm & D'Agostine, P.C.
        
  12.1 ** Statement regarding computation of ratio of earnings to fixed charges.
        
  21 ** Subsidiaries of the Registrant.
        
  23.1 ** Consent of Deloitte & Touche LLP related to Clean Harbors, Inc.
        
  23.2 ** Consent of KPMG LLP related to Safety-Kleen, Inc.
        
  23.3 ** Consent of Davis, Malm & D'Agostine, P.C. (included in Exhibit 5.1).
        
  24 ** Powers of Attorney (see pages II-4 through II-22 of this Registration Statement).
        
  25.1 ** Statement of Eligibility and Qualification under the Trust Indenture Act of 1939 of U.S. Bank National Association, as Trustee, on Form T-1, relating to the Registrant's 5.125% Senior Notes due 2021.
        
  99.1 ** Form of Letter of Transmittal.
        
  99.2 ** Form of Notice of Guaranteed Delivery.
        
  99.3 ** Form of Letter to Registered Holders and DTC Participants.
        
  99.4 ** Form of Letter to Clients.
        
  99.5 ** Form of Guidelines for Certification of Taxpayer Identification Number on Substitute Form W-9.

*
Incorporated by reference to the similarly numbered exhibit to the Registrant's Registration Statement on Form S-4 (File No. 333-183641).

**
Filed herewith.

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