Exhibit 99.1

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION OF HECKMANN CORPORATION

The accompanying unaudited pro forma combined financial statements present the pro forma combined financial position and results of operations of the combined company based upon the historical financial statements of Heckmann Corporation (“Heckmann”) and Badlands Power Fuels, LLC (“Power Fuels”) after giving effect to the merger and adjustments described in the accompanying footnotes, and are intended to reflect the impact of the Power Fuels merger on Heckmann. The accompanying unaudited pro forma combined financial statements are based upon historical financial statements and have been developed from (i) the audited consolidated financial statements of Heckmann contained in its Annual Report on Form 10-K for the year ended December 31, 2011, and the unaudited consolidated financial statements of Heckmann contained in its Quarterly Report on Form 10-Q for the nine months ended September 30, 2012, and (ii) the audited consolidated financial statements of Power Fuels for the year ended December 31, 2011, and the unaudited consolidated financial statements of Power Fuels for the nine months ended September 30, 2012, both which are included in Exhibit 99.1 to Heckmann’s Current Report on Form 8-K filed with the United States Securities and Exchange Commission (the “SEC”) on December 6, 2012. The unaudited pro forma combined financial statements are prepared with Heckmann treated as the acquiror for purposes of the presentation and as if the merger with Power Fuels had been consummated on September 30, 2012 for purposes of preparing the unaudited combined balance sheet as of September 30, 2012, and on January 1, 2011 for purposes of preparing the unaudited combined statements of operations for the twelve months ended December 31, 2011 and the nine months ended September 30, 2012. The unaudited pro forma combined statement of operations for the year ended December 31, 2011, includes the pro forma results of TFI Holdings, Inc. and its subsidiary, Thermo Fluids Inc. (together, “TFI”), which were acquired by Heckmann on April 10, 2012, as reflected in the information contained in Heckmann’s Current Report on Form 8-K/A filed with the SEC on June 20, 2012 (the “6/20/12 Form 8-K/A”). In addition, for purposes of the unaudited combined statements of operations for the nine months ended September 30, 2012, the pro forma results for the nine months ended September 30, 2012 include the pro forma results of TFI for the three months ended March 31, 2012 as reflected in the information contained in the 6/20/12 Form 8-K/A.

For purposes of the unaudited pro forma combined financial statements, the merger consideration with respect to the Power Fuels transaction is assumed to be the issuance of 95.0 million shares of Heckmann common stock and the payment of $129.4 million in cash. In addition, we refinanced Power Fuels’ outstanding debt (the “Refinancing”) in the amount of $145.6 million. The Refinancing and the payment of the cash consideration were consummated with borrowings under Heckmann’s senior secured revolving credit facility, which was amended concurrently with the consummation of the Power Fuels merger to, among other things, increase the credit facility to $325.0 million, and the net proceeds of the issuance of $150.0 million of debt securities (which debt securities constitute an additional issuance of Heckmann’s currently outstanding $250.0 million 9.875% senior notes due 2018 issued in connection with the consummation of the TFI acquisition).

For purposes of these unaudited pro forma combined financial statements, the price of Heckmann common stock issued as part of the Power Fuels merger consideration was $3.91 per share, and the interest rate on credit facility borrowings was approximately 4.0%. The $150.0 million of debt securities issued bears interest at the rate of 9.875%. Heckmann plans to obtain third-party valuations of certain of Power Fuels’ assets, including property and equipment and intangible assets. Given the size and timing of the Power Fuels merger, the amount of certain assets and liabilities presented are based on preliminary valuations and are subject to adjustment as additional information is obtained and the third-party valuations are reviewed and finalized. The primary areas of the purchase price allocation that are considered preliminary relate to the fair values of property and equipment, intangibles, and acquisition-related liabilities, goodwill and the related tax impact of adjustments to these areas of the purchase price allocation. However, as indicated in note (a) to the unaudited pro forma combined financial statements, Heckmann has made certain adjustments to the September 30, 2012 historical book values of the assets and liabilities of Power Fuels to reflect certain preliminary estimates of the fair values necessary to prepare the unaudited pro forma combined financial statements. Any excess purchase price over the historical net assets of Power Fuels, as adjusted to reflect estimated fair values, has been recorded as goodwill. Actual results may differ from these unaudited pro forma combined financial statements once Heckmann has completed the valuation studies necessary to finalize the required purchase price allocations. There can be no assurance that such finalization will not result in material changes.

The accompanying unaudited pro forma combined financial statements are provided for illustrative purposes only and do not purport to represent what the actual consolidated results of operations or the consolidated financial position of Heckmann would have been had the Power Fuels merger and/or the TFI acquisition occurred on the dates assumed, nor are they necessarily indicative of future consolidated results of operations or consolidated financial position. The unaudited pro forma combined financial statements do not include the realization of potential cost savings from operating efficiencies or restructuring costs which may result from the Power Fuels merger. The unaudited pro forma combined financial statements should be read in conjunction with the separate historical consolidated financial statements and accompanying notes of Heckmann and Power Fuels, as well as the separate historical consolidated financial statements and accompanying notes of TFI which are included as Exhibit 99.2 to Heckmann’s Current Report on Form 8-K filed with the SEC on March 22, 2012 (for the year ended December 31, 2011) and Exhibit 99.2 to the 6/20/12 Form 8-K/A (for the three-month period ended March 31, 2012).

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UNAUDITED PRO FORMA COMBINED BALANCE SHEET

AS OF SEPTEMBER 30, 2012

(In thousands, except share and per share amounts)

See Notes to Unaudited Pro Forma Combined Financial Statements

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UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS

FOR THE YEAR ENDED DECEMBER 31, 2011

(In thousands, except share and per share amounts)

See Notes to Unaudited Pro Forma Combined Financial Statements

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UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS

FOR THE NINE MONTH PERIOD ENDED SEPTEMBER 30, 2012

(In thousands, except share and per share amounts)

See Notes to Unaudited Pro Forma Combined Financial Statements

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NOTES TO UNAUDITED PRO FORMA COMBINED

FINANCIAL STATEMENTS

The pro forma combined balance sheet has been adjusted to reflect the preliminary allocation of the purchase price to identifiable net assets acquired with the excess purchase price to goodwill. The purchase price allocation within these unaudited pro forma combined financial statements is based upon a purchase price of $500.9 million, inclusive of the cash consideration and the fair value of the common stock issued. The fair value of the common stock was $3.91 per share (the closing price of Heckmann’s common stock on November 30, 2012, as reported on the New York Stock Exchange). The preliminary purchase price consideration calculation used as a basis for the pro forma balance sheet is as follows:

Heckmann is in the process of completing an assessment of the fair value of assets and liabilities of Power Fuels and the related business integration plans. Given the size and timing of the Power Fuels merger, the amount of certain assets and liabilities presented are based on preliminary valuations and are subject to adjustment as additional information is obtained and the third-party valuation is finalized. The primary areas of the purchase price allocation that are not finalized related to fair values of property and equipment, intangibles, acquisition related liabilities, goodwill and the related tax impact of adjustments to these areas of the purchase price allocation. The table below represents a preliminary allocation of the total consideration to the Power Fuels tangible and intangible assets and liabilities based on management’s preliminary estimates of their respective fair values as of the date of the merger.

Upon completion of the fair value assessment, Heckmann anticipates that the final purchase price allocation will differ from the preliminary assessment outlined above. Any changes to the initial estimates of the fair value of the assets and liabilities will be recorded as adjustments to those assets and liabilities and residual amounts will be allocated to goodwill.

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Heckmann anticipates obtaining third-party valuations of certain of Power Fuels assets and liabilities, including property and equipment and intangible assets. Heckmann has estimated the fair value of Power Fuels’ property and equipment and intangible assets based on a preliminary internal valuation analysis. The fair value adjustment to identifiable intangible assets is being amortized over an estimated useful life of fifteen years.

Heckmann has estimated the fair value for customer relationships based on preliminary internal valuation analysis. For perspective, a 10% change in the allocation between these intangible assets and goodwill would result in a change in amortization expense, with a corresponding annual change, net of tax, in net income of approximately $0.9 million or less than $0.01 per share.

Included in the deferred income tax adjustments is an adjustment to Heckmann’s U.S. federal income tax asset valuation allowance totaling $21,299 as a result of recording deferred tax liabilities as a result of the acquisition.

The unaudited pro forma combined balance sheets have been adjusted to reflect:

See note (a) for a discussion of the impact of potential changes in estimates related to the allocation of the purchase price.

Subsequent to the Power Fuels merger, we expect the legacy entities of Heckmann will record U.S. federal income tax benefits from the reversal of a portion of Heckmann’s valuation allowance for U.S. federal deferred tax assets, as a result of recording deferred tax liabilities in accounting for the merger.

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The unaudited pro forma combined statements of operations for the twelve months ended December 31, 2011 have been adjusted to reflect the acquisition of TFI as reflected in the 6/20/12 Form 8-K/A, as well as the following adjustments:

The unaudited pro forma combined statements of operations for the nine month period ended September 30, 2012 have been adjusted to reflect the acquisition of TFI as reflected in the 6/20/12 Form 8-K/A, as well as the following adjustments:

Pro forma combined basic net income per common share from continuing operations for the twelve months ended December 31, 2011, is based on Heckmann weighted average basic shares outstanding of 132,774,730 (considering the

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acquisition of TFI), plus 85.0 million shares of Heckmann common stock issued to the sole owner of Power Fuels (net of 10.0 million shares of Heckmann common stock issued and held in escrow under the terms of the Power Fuels merger agreement). Pro forma combined diluted net income per common share from continuing operations for the twelve months ended December 31, 2011, is based on Heckmann weighted average basic shares outstanding of 139,663,329 (considering the acquisition of TFI), plus 95.0 million shares of Heckmann common stock issued to the sole owner of Power Fuels. Pro forma combined basic net income per common share for the nine months ended September 30, 2012, is based on reported Heckmann weighted average basic shares outstanding of 139,312,830, plus 85.0 million shares of Heckmann common stock issued to the sole owner of Power Fuels (net of 10.0 million shares of Heckmann common stock issued and held in escrow under the terms of the Power Fuels merger agreement). Pro forma combined diluted net income per common share for the nine months ended September 30, 2012, is based on reported Heckmann weighted average diluted shares outstanding of 139,312,830, plus 95.0 million shares of Heckmann common stock issued to the sole owner of Power Fuels.

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