Document:

Amended and Restated Subscription Agreement, dated October 3, 2007

 EXHIBIT 10.1 
 HECKMANN CORPORATION 
 AMENDED AND RESTATED SUBSCRIPTION AGREEMENT 
 THIS SUBSCRIPTION AGREEMENT (this “Agreement”) is made as of the 3rd day of October, 2007, by and between Heckmann Corporation, a Delaware
corporation (the “Company”), and Heckmann Acquisition, LLC, a Delaware limited liability company (“Purchaser”). 
 WHEREAS, the Company and Purchaser have previously entered into that certain Unit and Warrant Subscription Agreement dated as of June 21, 2007 (the “Original Agreement”), and the Company and Purchaser now desire to amend and
restate the Original Agreement in entirety through this Agreement; 
 WHEREAS, the Company desires to commit to issue and sell, and Purchaser
desires to commit to purchase and acquire, Warrants (as defined herein) on the terms and conditions hereinafter set forth; 
 NOW, THEREFORE,
for and in consideration of the promises and mutual covenants set forth herein, it is agreed between the parties as follows: 
 1.
Commitment To Purchase Warrants. Subject to and immediately prior to the consummation of the Company’s initial public offering (the “IPO”), Purchaser hereby agrees to subscribe for and purchase from the Company, and the Company
hereby agrees to issue and sell to Purchaser, 5,000,000 warrants (each, a “Warrant”) at a purchase price of $1.00 per Warrant for an aggregate purchase price of $5,000,000. Each Warrant shall entitle the holder thereof to purchase one
share of the common stock of the Company, par value $0.001 per share (the “Common Stock”) at an exercise price of $6.00, in accordance with the terms of the Warrant as set forth in the Amended and Restated Warrant Agreement (the
“Warrant Agreement”) dated as of October 3, 2007 by and between the Company and American Stock Transfer & Trust Company, as warrant agent. The closing of the purchase and sale of the Warrants hereunder, including payment for and
delivery of the Warrants, shall occur at the offices of the Company immediately prior to, and subject to consummation of, the IPO. 
 2.
Payment of Purchase Price. The purchase price for the Warrants (also referred to herein as the “Securities”) shall be tendered in full at the closing by one or a combination of the following means: 
 (a) wiring of immediately available United States funds to an account for the benefit of the Company, pursuant to wire instructions
provided by the Company in advance; or 
 (b) by delivery of a cashiers check to the Company of immediately available United
States funds. 
 3. Acceptance or Rejection of Agreement. The Company has the right to reject this Agreement and any subscription for
the Securities represented hereby in whole or in part, for any reason and at any time prior to a closing, notwithstanding receipt by Purchaser or prior notice of acceptance of such subscription. The Securities subscribed for herein will not be
deemed issued to or owned by Purchaser until a copy of this Agreement has been executed by the Company and Purchaser and a closing with respect to such Securities has occurred. In the event that a closing does not take place for any reason with
respect to some or all of the Securities, all cash proceeds delivered by Purchaser in accordance herewith with respect to such Securities shall be returned to Purchaser as soon as practicable, without interest, offset or deduction. 
 4. Limitations on Transfer. Purchaser shall not assign, hypothecate, donate, encumber or 

  

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otherwise dispose of any interest in the Warrants (and shares of Common Stock issuable in respect thereof) during the “Escrow Period” for the
“Sponsors’ Warrants” (as such terms are defined in a securities escrow agreement substantially in the form attached hereto as Exhibit A (the “Securities Escrow Agreement”), dated on or about the effective date of the IPO to
be entered into by and between the Company and an escrow agent to be determined by the Company), except (i) as otherwise permitted by the Securities Escrow Agreement, (ii) in compliance with applicable securities laws and (iii) in
compliance with the Warrant Agreement. 
 5. Restrictive Legends. All certificates representing the Securities (and any underlying
securities thereof) shall have endorsed thereon legends in substantially the following forms (in addition to any other legend which may be required by other agreements between the parties hereto): 
 (a) “THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. THE
SECURITIES MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT AS TO THE SECURITIES UNDER SAID ACT OR AN OPINION OF COUNSEL SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT
REQUIRED.” 
 (b) “THE SECURITIES REPRESENTED BY THIS CERTIFICATE MAY NOT BE ASSIGNED, HYPOTHECATED, DONATED,
ENCUMBERED, SOLD, TRANSFERRED OR OTHERWISE DISPOSED OF EXCEPT IN ACCORDANCE WITH THAT CERTAIN SECURITIES ESCROW AGREEMENT DATED
                            , 2007, AND THAT CERTAIN WARRANT AGREEMENT DATED AS OF
                            , 2007, COPIES OF WHICH ARE AVAILABLE FOR INSPECTION AT THE OFFICES OF THE
COMPANY.” 
 (c) Any legend required by appropriate blue sky officials. 
 6. Investment Representations. In connection with the purchase of the Securities, Purchaser represents to the Company the following: 

(a) Purchaser has been furnished with all materials relating to the Company’s business affairs and financial condition and
materials related to the offer and sale of the Securities that have been requested by Purchaser and has acquired sufficient information about the Company to reach an informed and knowledgeable decision to acquire the Securities. Purchaser has been
afforded the opportunity to ask questions of the executive officer and director of the Company. Purchaser understands that its investment in the Securities involves a high degree of risk. Purchaser has sought such accounting, legal and tax advice as
Purchaser has considered necessary to make an informed investment decision with respect to Purchaser’s acquisition of the Securities. Purchaser has such knowledge and expertise in financial and business matters, knows of the high degree of risk
associated with investments generally and particularly investments in the securities of companies in the development stage such as the Company, is capable of evaluating the merits and risks of an investment in the Securities, and is able to bear the
economic risk of an investment in the Securities in the amount contemplated hereunder. Purchaser has adequate means of providing for its current financial needs and contingencies and will have no current or anticipated future needs for liquidity
which would be jeopardized by the investment in the Securities. Purchaser can afford a complete loss of its investment in the Securities. Purchaser is purchasing the Securities for investment for Purchaser’s own account only and not with a view
to, or for resale in connection with, any “distribution” thereof within the meaning of the Securities Act of 1933, as amended (the “Act”). Purchaser understands that the Company is a blank check development stage company recently
formed for the purpose of consummating an initial business combination (a “Business Combination”) and understands that there is no assurance as to the future performance of the Company and that the Company may never effectuate a Business
Combination. 
  

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 (b) Purchaser understands that the Securities (and the underlying securities thereof)
have not been registered under the Act or any state securities law by reason of a specific exemption therefrom, and that the Company is relying on the truth and accuracy of, and Purchaser’s compliance with, the representations and warranties
and agreements of Purchaser set forth herein to determine the availability of such exemptions and the eligibility of Purchaser to acquire such Securities, including, but not limited to, the bona fide nature of Purchaser’s investment intent as
expressed herein. 
 (c) Purchaser further acknowledges and understands that the Securities (and the underlying securities
thereof) must be held indefinitely unless the Securities (and the underlying securities thereof) are subsequently registered under the Act or an exemption from such registration is available. Purchaser understands that the certificates evidencing
the Securities (and the underlying securities thereof) will be imprinted with a legend which prohibits the transfer of the Securities (and the underlying securities thereof) unless the Securities (and the underlying securities thereof) are
registered or such registration is not required in the opinion of counsel for the Company. 
 (d) Purchaser is familiar with
the provisions of Rule 144 under the Act, as in effect from time to time (“Rule 144”), which, in substance, permit limited public resale of “restricted securities” acquired, directly or indirectly, from the issuer thereof (or
from an affiliate of such issuer), in a non-public offering subject to the satisfaction of certain conditions. Unless the Company registers the Securities (and the underlying securities thereof) under the Act, the Securities (and the underlying
securities thereof) may be resold by Purchaser only in certain limited circumstances subject to the provisions of Rule 144, which requires, among other things: (i) the availability of certain public information about the Company and
(ii) the resale occurring following the required holding period under Rule 144 after Purchaser has purchased, and made full payment of (within the meaning of Rule 144), the securities to be sold. 
 (e) Purchaser further understands that at the time Purchaser wishes to sell the Securities there may be no public market upon which to
make such a sale, and that, even if such a public market then exists, the Company may not be satisfying the current public information requirements of Rule 144, and that, in such event, Purchaser would be precluded from selling the Securities (and
the underlying securities thereof) under Rule 144 even if the minimum holding period requirement had been satisfied. Notwithstanding Sections 6(d) and (e) hereof, Purchaser understands that he may be considered a promoter of the Company and
understands that it is the position of the Securities and Exchange Commission (the “SEC”) that promoters or affiliates of a blank check company and their transferees, both before and after a Business Combination, would act as an
“underwriter” under the Act when reselling the securities of a blank check company. Accordingly, the SEC believes that those securities can be resold only through a registered offering and that Rule 144 would not be available for those
resale transactions despite technical compliance with the requirements of Rule 144. 
 (f) Purchaser represents that Purchaser
is an “accredited investor” as that term is defined in Rule 501 of Regulation D promulgated by the SEC under the Act. 
 (g) Purchaser has all necessary limited liability company power and authority to enter into this Agreement and to consummate the transactions contemplated hereby. All limited liability company action necessary to be taken by Purchaser to
authorize the execution, delivery and performance of this Agreement and all other agreements and instruments delivered by Purchaser in connection with the transactions contemplated hereby has been duly and validly taken, and this Agreement has been
duly executed and delivered by Purchaser. Subject to the terms and conditions of this Agreement, this Agreement constitutes the valid, binding and enforceable obligation of Purchaser, enforceable in accordance with its terms, except as
enforceability may be limited by (i) applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer or similar laws of general application now or hereafter in 

  

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effect affecting the rights and remedies of creditors and by general principles of equity (regardless of whether enforcement is sought in a proceeding at law
or in equity); and (ii) the applicability of the federal and state securities laws and public policy as to the enforceability of the indemnification provisions of this Agreement. The purchase by Purchaser of the Securities does not conflict
with the organizational documents of Purchaser or with any material contract by which Purchaser or its property is bound, or any laws or regulations or decree, ruling or judgment of any court applicable to Purchaser or its property. The principal
place of business of Purchaser are as set forth on the signature page hereto. 
 (h) Purchaser did not decide to enter into
this Agreement as a result of any general solicitation or general advertising within the meaning of Rule 502(c) of the Securities Act. 
 (i) Purchaser understands that no United States federal or state agency or any other government or governmental agency has passed on or made any recommendation or endorsement of the Securities or the fairness or
suitability of the investment in the Securities, nor have such authorities passed upon or endorsed the merits of the offering of the Securities. 
 7. Company Representations and Warranties. The Company hereby represents and warrants to Purchaser that the Company has all necessary corporate power and authority to enter into this Agreement and to consummate the transactions
contemplated hereby. All corporate action necessary to be taken by the Company to authorize the execution, delivery and performance of this Agreement and all other agreements and instruments delivered by the Company in connection with the
transactions contemplated hereby has been duly and validly taken and this Agreement has been duly executed and delivered by the Company. Subject to the terms and conditions of this Agreement, this Agreement constitutes the valid, binding and
enforceable obligation of the Company, enforceable in accordance with its terms, except as enforceability may be limited by (i) applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer or similar laws of general
application now or hereafter in effect affecting the rights and remedies of creditors and by general principles of equity (regardless of whether enforcement is sought in a proceeding at law or in equity); and (ii) the applicability of the
federal and state securities laws and public policy as to the enforceability of the indemnification provisions of this Agreement. The sale by the Company of the Securities does not conflict with the certificate of incorporation or by-laws of the
Company or any material contract by which the Company or its property is bound, or any federal or state laws or regulations or decree, ruling or judgment of any United States or state court applicable to the Company or its property. 
 8. Indemnification. Purchaser hereby agrees to indemnify and hold harmless the Company and the Company’s officers, directors, stockholders,
employees, agents, and attorneys against any and all losses, claims, demands, liabilities and expenses (including reasonable legal or other expenses incurred by each such person in connection with defending or investigating any such claims or
liabilities, whether or not resulting in any liability to such person or whether incurred by the indemnified party in any action or proceeding between the indemnitor and indemnified party or between the indemnified party and any third party) to
which any such indemnified party may become subject, insofar as such losses, claims, demands, liabilities and expenses (a) arise out of or are based upon any untrue statement or alleged untrue statement of a material fact made by Purchaser and
contained herein, or (b) arise out of or are based upon any breach by Purchaser of any representation, warranty or agreement made by Purchaser contained herein. 
  

	9.	 	Miscellaneous. 

 (a) Notices.
All notices required or permitted hereunder shall be in writing and shall be deemed effectively given: (i) upon personal delivery to the party to be notified, (ii) when sent by confirmed facsimile if sent during normal business hours of
the recipient, and if not during normal business hours of the recipient, then on the next business day, (iii) five calendar days after having been sent by registered or certified mail, return receipt requested, postage prepaid, or (iv) one
business day after deposit with a 

  

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nationally recognized overnight courier, specifying next day delivery, with written verification of receipt. All communications shall be sent to the other
party hereto at such party’s address hereinafter set forth on the signature page hereof, or at such other address as such party may designate by ten days advance written notice to the other party hereto. 
 (b) Successors and Assigns. This Agreement shall inure to the benefit of the successors and assigns of the Company and, subject to
the restrictions on transfer herein set forth, shall be binding upon Purchaser and Purchaser’s successors and assigns. 
 (c) Attorneys’ Fees; Specific Performance. Purchaser shall reimburse the Company for all costs incurred by the Company in enforcing the performance of, or protecting its rights under, any part of this Agreement, including
reasonable costs of investigation and attorneys’ fees. 
 (d) Governing Law; Venue. This Agreement shall be
governed by and construed in accordance with the laws of the State of Delaware without regard to the principles of conflicts of law thereof. The parties agree that any action brought by either party to interpret or enforce any provision of this
Agreement shall be brought in, and each party agrees to, and does hereby, submit to the jurisdiction and venue of, the appropriate state or federal court for the district encompassing the Company’s principal place of business. 
 (e) Further Execution. The parties agree to take all such further action(s) as may reasonably be necessary to carry out and
consummate this Agreement as soon as practicable, and to take whatever steps may be necessary to obtain any governmental approval in connection with or otherwise qualify the issuance of the securities that are the subject of this Agreement.

 (f) Independent Counsel. Purchaser acknowledges that this Agreement has been prepared on behalf of the Company by
Skadden, Arps, Slate, Meagher & Flom LLP, counsel to the Company and that Skadden, Arps, Slate, Meagher & Flom LLP does not represent, and is not acting on behalf of, Purchaser. Purchaser has been provided with an opportunity to
consult with Purchaser’s own counsel with respect to this Agreement. 
 (g) Entire Agreement; Amendment. This
Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes and merges all prior agreements or understandings, whether written or oral. This Agreement may not be amended, modified or
revoked, in whole or in part, except by an agreement in writing signed by each of the parties hereto. 
 (h)
Severability. If one or more provisions of this Agreement are held to be unenforceable under applicable law, the parties agree to renegotiate such provision in good faith. In the event that the parties cannot reach a mutually agreeable and
enforceable replacement for such provision, then (i) such provision shall be excluded from this Agreement, (ii) the balance of the Agreement shall be interpreted as if such provision were so excluded and (iii) the balance of the
Agreement shall be enforceable in accordance with its terms. 
 (i) Counterparts. This Agreement may be executed in two
or more counterparts, each of which shall be deemed an original and all of which together shall constitute one instrument. This Agreement or any counterpart may be executed via facsimile or electronic mail transmission, and any such executed
facsimile or electronic mail copy shall be treated as an original. 
 (j) Survival. The representations and warranties
contained herein will survive the delivery of, and the payment for, the Securities. 
  

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 (k) Waiver of Jury Trial. Each party hereto hereby irrevocably and unconditionally
waives the right to a trial by jury in any action, suit, counterclaim or other proceeding (whether based on contract, tort or otherwise) arising out of, connected with or relating to this Agreement, the transactions contemplated hereby, or the
actions of Purchaser in the negotiation, administration, performance or enforcement hereof. 
  

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 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the day and year first above
written. 
  

			
	 COMPANY:
  
 HECKMANN CORPORATION

		
	 By:
	 	 /s/    Richard J. Heckmann

		 	 Name: Richard J. Heckmann
 Title: Chief Executive Officer

	
	 Address:

  

			
	 PURCHASER:
  
 HECKMANN ACQUISITION, LLC

		
	 By:
	 	 /s/    Richard J. Heckmann

		 	 Name: Richard J. Heckmann
 Title: Sole Member

	
	 Address:Letter Agreement (Heckmann Acquisition, LLC), dated October 3, 2007

 Exhibit 10.5 
 October 3, 2007 
 Heckmann Corporation 
 75080 Frank Sinatra Drive 
 Palm Desert, California 92211 
  

	 	Re:	 	INITIAL PUBLIC OFFERING 

 Ladies and
Gentlemen: 
 This letter is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting
Agreement”) proposed to be entered into by and among Heckmann Corporation, a Delaware corporation (the “Company”), Credit Suisse Securities (USA) LLC, Roth Capital Partners, LLC and Morgan Joseph & Co., Inc. (together,
the “Underwriters”), relating to an underwritten initial public offering (the “IPO”) of the Company’s units (the “Units”), each Unit comprised of one share of the Company’s Common Stock,
par value $0.001 per share (the “Common Stock”), and one warrant, which is exercisable for one share of Common Stock. Certain capitalized terms used herein are defined in paragraph 11 hereof. 
 In order to induce the Company and the Underwriters to enter into the Underwriting Agreement and to proceed with the IPO, and in recognition of the
benefit that such IPO will confer upon the undersigned as a stockholder of the Company, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the undersigned hereby agrees with the Company and
the Underwriters as follows: 
 1. If the Company solicits approval of its stockholders of a Business Combination, the undersigned will vote all Insider
Shares owned by the undersigned in accordance with the majority of the votes cast by the holders of the IPO Shares. The undersigned will not vote in favor of any amendment to Article Fifth and Sixth of the Amended and Restated Certificate of
Incorporation of the Company proposed to be filed with the Secretary of State of the State of Delaware on the Effective Date. 
 2. In the event that the
Company fails to consummate a Business Combination within twenty four (24) months from the effective date (the “Effective Date”) of the Registration Statement, the undersigned will take all reasonable actions within the
undersigned’s power to (i) cause the Trust Account to be liquidated and distributed to the holders of IPO Shares in accordance with that Investment Management Trust Agreement to be entered into by and between the Company and American Stock
Transfer & Trust Company, as Trustee (the “Trust Agreement”); and (ii) cause the Company to liquidate as soon as reasonably practicable. The undersigned agrees that in connection with any cessation of the corporate
existence of the Company, it will take all reasonable steps to cause the Company to adopt a plan of distribution in accordance with Section 281(b) of the General Corporation Law of the State of Delaware or any successor provision thereto. The
undersigned hereby waives any and all right, title, interest or claim of any kind (each a “Claim”) in or to (x) any distribution of the Trust Account with respect to the undersigned’s Insider Shares in connection with a
liquidation and (y) any remaining net assets of the Company after such liquidation. The undersigned hereby waives any Claim the undersigned may have in the future as a result of, or arising out of, any contracts 

 
or agreements with the Company and will not seek recourse against the funds held in or distributed from the Trust Account for any reason. The undersigned
acknowledges and agrees that there will be no distribution from the Trust Account with respect to any warrants, all rights of which will terminate on the Company’s liquidation. 
 3. Except as disclosed in the Registration Statement, neither the undersigned nor any Affiliate of the undersigned will be entitled to receive and will not accept any compensation for services rendered to the Company
prior to or in connection with the consummation of the Business Combination; provided, that the undersigned shall be entitled to reimbursement from the Company upon approval by the Company’s Audit Committee for the undersigned’s reasonable
out-of-pocket expenses incurred in connection with seeking and consummating a Business Combination. 
 4. Neither the undersigned nor any Affiliate of the
undersigned will be entitled to receive or accept from the Company a finder’s fee, broker commission or any other compensation in the event the undersigned or any Affiliate of the undersigned originates a Business Combination. 
 5. The undersigned shall escrow the undersigned’s Insider Shares and Sponsors’ Warrants, in accordance with the terms of a Securities Escrow Agreement which
the Company will enter into with the undersigned and American Stock Transfer & Trust Company, as escrow agent, in form and substance acceptable to the Company. 
 6. With respect to the undersigned, the information in the Registration Statement is true and accurate in all respects and does not omit any material information with respect to the undersigned. The undersigned
represents and warrants that: 
 6.1 the undersigned is not subject to, or a respondent in, any legal action for any injunction,
cease-and-desist order or order or stipulation to desist or refrain from any act or practice relating to the offering of securities in any jurisdiction; 
 6.2 the undersigned has never been convicted of or pleaded guilty to any crime (i) involving any fraud; (ii) relating to any financial transaction or handling of funds of another person;
(iii) pertaining to any dealings in any securities; or (iv) moral turpitude, and the undersigned is not currently a defendant in any such criminal proceeding; 
 6.3 the undersigned has never been suspended or expelled from membership in any securities or commodities exchange or association or had a securities or commodities license or registration denied, suspended or
revoked; 
 6.4 a petition under any federal bankruptcy laws or any state insolvency law was not filed by or against, nor was a receiver
fiscal agent or similar officer appointed by a court for the business or property of the undersigned, or for any partnership in which the undersigned was a general partner within the past ten years; 

 6.5 the undersigned has not been subject to any order prohibiting and is not subject to any legal
proceeding seeking to prohibit the undersigned from engaging in any type of business practice; 
 6.6 the undersigned has not been found by a
court of competent jurisdiction in a civil action by the Securities and Exchange Commission or by any other federal or state administrative or regulatory authority to have violated any federal or state securities law; 
 6.7 the undersigned has not been found by a court of competent jurisdiction in a civil action by the Commodity Futures Trading Commission or by any other
federal or state administrative or regulatory authority to have violated any federal or state commodities law; and 
 6.8 the Company will
not consummate any Business Combination that involves a target acquisition which is affiliated with any of the directors, officers or Affiliates of the Company or with which the undersigned has had any discussions, formal or otherwise, with respect
to a Business Combination prior to the consummation of the IPO. 
 7. This letter agreement shall be binding on the Company and the undersigned and the
undersigned’s respective successors, heirs, personal representatives and assigns. This letter agreement shall terminate on the earlier of (i) the date upon which the Business Combination is consummated and (ii) the date upon which the
liquidation and distribution of the Trust Account is completed, provided that the following Sections shall survive such termination: 3, 4, 5, 8, 9, 10, 11 and 12. 
 8. Reference is made to the lock-up agreement letter to be entered into, by and among the undersigned and the Underwriters, and the undersigned covenants and undertakes to the Company to comply with the terms thereof as if the Company were
a party thereto. 
 9. This letter agreement shall be governed by, and construed in accordance with, the laws of the State of New York applicable to
contracts executed in and to be performed in that State, including, without limitation, Sections 5-1401 and 5-1402 of the New York General Obligations Law and the New York Civil Practice Laws and Rules 327(b). Each of the Company and the undersigned
hereby (i) agrees that any action, proceeding or claim against him or it arising out of or relating in any way to this letter agreement shall be brought and enforced in the courts of the State of New York or the United States District Court for
the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction shall be exclusive and (ii) waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient forum.

 10. Each party hereto hereby irrevocably and unconditionally waives the right to a trial by jury in any action, suit, counterclaim or other proceeding
(whether based on contract, tort or otherwise) arising out of, connected with or relating to this letter agreement. 

	11.	 	As used herein: 

 11.1 “Affiliate” shall
have the meaning ascribed to it in Rule 12b-2 of the General Rules and Regulations under the Securities Exchange Act of 1934, as amended. 
 11.2. “Business Combination” shall have the meaning set forth in the Registration Statement. 
 11.3
“Insiders” shall mean each of the following: 
 Richard J. Heckmann 
 Lou L. Holtz 
 Alfred E. Osborne, Jr.

 Dan Quayle 
 Heckmann
Acquisition, LLC 
 11.4 “Insider Shares” shall mean all of the shares of Common Stock of the Company issued prior to the
IPO. 
 11.5 “IPO Shares” shall mean the shares of Common Stock comprising the Units issued in the Company’s IPO.

 11.6 “Registration Statement” shall mean the registration statement filed by the Company on Form S-1 (No. 333-144056)
with the Securities and Exchange Commission on June 26, 2007, and any amendment or supplement thereto, in connection with the IPO. 
 11.7 “Sponsors’ Warrants” shall mean the warrants to be purchased by the undersigned immediately prior to and subject to the consummation of the Company’s IPO, as set forth in that certain Amended and Restated
Subscription Agreement, dated as of October 3, 2007, by and between the Company and the undersigned. 
 11.8 “Trust
Account” shall mean the trust account established pursuant to the Trust Agreement, the amounts therein to be released only in the event of the consummation of a Business Combination, a liquidation of the Company or as otherwise permitted by
the Trust Agreement. 
 12. No term or provision of this letter agreement may be amended, changed, waived altered or modified except by written instrument
executed and delivered by the undersigned, the Company and Credit Suisse. 

			
	Sincerely,
	
	 HECKMANN ACQUISITION, LLC

		
	By:	 	/s/ Richard J. Heckmann
	Name:	 	Richard J. Heckmann
	 Title:
	 	Managing Member

  

			
	Accepted and agreed:
	
	HECKMANN CORPORATION
		
	 By:
	 	/s/ Richard J. Heckmann
	Name:	 	Richard J. Heckmann
	Title:	 	Chief Executive Officer

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