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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

(Mark One)

x                QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2012

Or

o                   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                          to

Commission file number 001-33830

EnergySolutions, Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (801) 649-2000

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

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x  No 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 definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o  No x

As of May 7, 2012, 89,182,309 shares of the registrant’s common stock were outstanding.

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ENERGYSOLUTIONS, INC.

INDEX TO QUARTERLY REPORT ON FORM 10-Q

For the Three Month Period Ended March 31, 2012

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PART I

Item 1.  Financial Statements

EnergySolutions, Inc.

Condensed Consolidated Balance Sheets

March 31, 2012 and December 31, 2011

(in thousands of dollars, except per share information)

See accompanying notes to condensed consolidated financial statements.

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EnergySolutions, Inc.

Condensed Consolidated Statements of Operations and Comprehensive Income

Three Month Period Ended March 31, 2012 and 2011

(in thousands of dollars, except per share information)

(unaudited)

See accompanying notes to condensed consolidated financial statements.

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EnergySolutions, Inc.

Condensed Consolidated Statement of Changes in Stockholders’ Equity

Three Month Period Ended March 31, 2012

(in thousands of dollars, except per share information)

(unaudited)

See accompanying notes to condensed consolidated financial statements.

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EnergySolutions, Inc.

Condensed Consolidated Statements of Cash Flows

Three Month Period Ended March 31, 2012 and 2011

(in thousands of dollars)

(unaudited)

See accompanying notes to condensed consolidated financial statements.

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EnergySolutions, Inc.

Notes to Condensed Consolidated Financial Statements

(1) Description of Business

References herein to “EnergySolutions,” the “Company,” “we,” “us” or “our” refer to EnergySolutions, Inc. and its consolidated subsidiaries unless the context otherwise requires.

Envirocare of Utah, Inc. was formed in 1988 to operate a disposal facility for mixed waste, uranium mill tailings and Class A low-level radioactive waste in Clive, Utah. In January 2005, Envirocare of Utah, Inc. converted to a limited liability company, Envirocare of Utah, LLC. Immediately thereafter, the sole member of Envirocare of Utah, LLC sold all of its member interest to ENV Holdings LLC. In 2006, Envirocare of Utah, LLC changed its name to EnergySolutions, LLC. Since 2005, we have expanded and diversified our operations through a series of strategic acquisitions, including the decontamination and decommissioning (“D&D”) division of Scientech, LLC in October 2005, BNG America, LLC in February 2006, Duratek, Inc. in June 2006, Safeguard International Solutions, Ltd. (renamed ESEU Services Limited) in December 2006, Parallax, Inc. (renamed EnergySolutions Performance Strategies) in January 2007, Reactor Sites Management Company Limited in June 2007, NUKEM Corporation (renamed EnergySolutions Diversified Services, Inc.) in July 2007, and Monserco Limited in December 2007.

On November 20, 2007, the date of the completion of our initial public offering, we completed our conversion to a corporate structure whereby EnergySolutions, LLC became a wholly owned subsidiary of EnergySolutions, Inc. As a result, the member of EnergySolutions, LLC contributed its membership equity interest for 75.2 million shares of $0.01 par value common stock of EnergySolutions, Inc. EnergySolutions, Inc., is organized and existing under the General Corporation Law of the state of Delaware. On July 30, 2008, we completed a secondary public offering of 35 million shares of common stock offered by ENV Holdings LLC, as selling stockholder.

We report our results through two major operating groups: the Government Group and the Global Commercial Group. The Government Group derives its revenue from United States (“U.S.”) government customers for the management and operation or clean-up of facilities with radioactive materials.  The Global Commercial Group reports its results under three separate operating business divisions: Commercial Services (“CS”), Logistics, Processing and Disposal (“LP&D”) and International. Our U.S. government customers are primarily individual offices, departments and administrations within the U.S. Department of Energy (“DOE”) and U.S. Department of Defense.  The Global Commercial Group provides a broad range of services both nationally and internationally, including (i) on-site D&D services to commercial customers such as power and utility companies, pharmaceutical companies, research laboratories, universities, industrial facilities, state agencies and other commercial entities that are involved with nuclear materials; (ii) logistics, transportation, processing, and disposal services to both government and commercial customers at our facility in Clive, Utah, our four facilities in Tennessee, or our two facilities in Barnwell, South Carolina; and (iii) comprehensive long-term stewardship D&D work for shut-down nuclear power plants and similar operations, to commercial customers. Our international operations derive revenue primarily through contracts with the Nuclear Decommissioning Authority (“NDA”) in the United Kingdom (“U.K.”) to operate, manage, and decommission ten Magnox sites with twenty-two nuclear reactors. In addition, our International operations also provide turn-key services and sub-contract services for the treatment, processing, storage, and disposal of radioactive waste from nuclear sites and non-nuclear facilities such as hospitals, research facilities and other manufacturing and industrial facilities.

(2) Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments, consisting only of normal recurring activities, considered necessary for a fair presentation have been included. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto contained in our Annual Report on Form 10-K for the year ended December 31, 2011 filed with the Securities and Exchange Commission (the “SEC”) on March 15, 2012.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates. The results of operations for the three month period ended March 31, 2012 are not necessarily indicative of results that can be expected for the full year.

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EnergySolutions, Inc.

Notes Consolidated Financial Statements (Continued)

We have majority voting rights for one of our minority-owned joint ventures. Accordingly, we have consolidated its operations in our consolidated financial statements and therefore, we recorded the noncontrolling interests, which reflect the portion of the earnings of operations which are applicable to other noncontrolling partners.

Reclassifications

Certain reclassifications have been made to our prior period consolidated financial information in order to conform to the current year presentation. Approximately $14.0 million was reclassified from unearned revenue, current portion to accrued expenses and other current liabilities as of December 31, 2011.

Accounting for the Exelon Transaction

In December 2007, we entered into certain agreements with Exelon Corporation (“Exelon”) to dismantle the Zion Station nuclear power plant located in Zion, Illinois (the “Zion Station”). On the date of the closing of the asset sale agreement with Exelon, the nuclear decommissioning trust (the “NDT”) fund investments previously held by Exelon for the purpose of decommissioning the Zion Station were transferred to us and the use of those funds, and any investment returns arising therefrom, remain restricted solely for that purpose. The investments are classified as trading securities and as such, the realized and unrealized investment gains and losses are recorded in the condensed consolidated statement of operations and comprehensive income as other income (expense), net. As part of this transaction, we have assumed Exelon’s cost basis in the investments for tax purposes. To the extent that the trust fund assets exceed the total costs to perform the D&D work, we have a contractual obligation to return any excess funds to Exelon. Throughout the period over which we will perform the D&D work, we will assess whether such a contingent liability exists using the measurement thresholds under ASC 450-20.

As the trust fund assets transferred to us represented a prepayment of fees to perform the D&D work, we also recorded deferred revenue initially totaling $772.2 million. Revenue recognition throughout the life of the project is based on the proportional performance method using a cost-to-cost approach.

In conjunction with the acquisition of the shut down nuclear power plant, we also became responsible for and assumed the asset retirement obligation (“ARO”) for the plant, and we have established an ARO measured in accordance with ASC 410-20. Subsequent measurement of the ARO follows ASC 410-20 accounting guidance, including the recognition of accretion expense, reassessment of the remaining liability using our estimated costs to complete the D&D work, plus a profit margin, and recognition of the ARO gain as the obligation is settled. ARO gain results from the requirement to record costs plus an estimate of third-party profits in determining the ARO. When we perform the D&D work using internal resources to reduce the ARO for work performed, we recognize a gain if actual costs are less than estimated costs plus the third-party profits. Accretion expense and ARO gain are recorded within cost of revenue because we are providing D&D services to a customer. Any change to the ARO as a result of cost estimate changes is recorded in cost of revenue in the statements of operations. We also recorded deferred costs to reflect the costs incurred to acquire the future revenue stream. The deferred cost balance was initially recorded at $767.1 million, which is the same value as the initial ARO, and will be amortized to cost of revenue in the same manner as deferred revenue is amortized, using the proportional performance method.

(3) Recent Accounting Pronouncements

Accounting Pronouncements Issued

In September 2011, the Financial Accounting Standards Board (“FASB”) issued additional guidance regarding testing goodwill for impairment. The guidance provides an entity the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, an entity determines it is more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two-step impairment test is not required. This guidance is effective for fiscal year 2012. The adoption of this guidance did not have an impact on our results of operations, financial position or cash flows.

In June 2011, the FASB issued new guidance on the presentation of comprehensive income in financial statements. This guidance eliminates the option to present the components of other comprehensive income as part of the statement of shareholders’ equity.  Instead, entities are required to present total comprehensive income either in a single, continuous statement of comprehensive income or in two separate, but consecutive, statements. Under the single-statement approach, entities must include the components of net income, a total for net income, the components of other comprehensive income

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EnergySolutions, Inc.

Notes Consolidated Financial Statements (Continued)

and a total for comprehensive income. Under the two-statement approach, entities must report an income statement and, immediately following, a statement of other comprehensive income. Under either method, entities must display adjustments for items reclassified from other comprehensive income to net income in both net income and other comprehensive income. The provisions for this pronouncement are effective for fiscal years, and interim periods within those years, beginning after December 15, 2011, however, certain provisions related to the presentation of reclassification adjustments have been deferred by recent guidance issued in December 2011, in which entities are allowed to continue to report reclassifications out of accumulated other comprehensive income consistent with the presentation requirements in effect before the issuance of these updates.  The adoption of this guidance did not have an impact on our consolidated financial statements as it only requires a change in the format of our current presentation.

(4) Trust Fund Investments

The NDT fund was established solely to satisfy obligations related to the D&D of the Zion Station. The NDT fund holds investments in marketable debt and equity securities directly and indirectly through commingled funds. Investments in the NDT fund are carried at fair value and are classified as trading securities. As of March 31, 2012, investments held by the NDT fund, net, totaled $674.9 million, and are included in current and other long-term assets in the accompanying balance sheets, depending on the expected timing of usage of funds.

A portion of our NDT fund is invested in a securities lending program with the trustee of the NDT fund. The program authorizes the trustee of the NDT fund to loan securities that are assets of the NDT fund to approved borrowers. Borrowers have the right to sell or re-pledge the loaned securities. The trustee requires borrowers, pursuant to a security lending agreement, to deliver collateral to secure each loan. The securities are required to be collateralized by cash, U.S. government securities or irrevocable bank letters of credit. Initial collateral levels are no less than 102% and 105% of the market value of the borrowed securities for collateral denominated in U.S. and foreign currency, respectively.

We consolidate the NDT fund as a variable interest entity (“VIE”). We have a contractual interest in the NDT fund and this interest is a variable interest due to its exposure to the fluctuations caused by market risk. We are able to control the NDT fund by appointing the trustee, and subject to certain restrictions, we are able to direct the investment policies of the fund. We are also the primary beneficiary of the NDT fund as we benefit from positive market returns and bear the risk of market losses.

NDT fund investments consisted of the following (in thousands):

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EnergySolutions, Inc.

Notes Consolidated Financial Statements (Continued)

We began consolidating the operations of the NDT fund on September 1, 2010. We have withdrawn from the NDT fund approximately $41.1 million and $161.5 million, for the three month period ended March 31, 2012 and the year ended December 31, 2011, respectively, to pay for D&D project expenses, estimated trust income taxes and trust management fees.

Unrealized gains resulting from adjustments to the fair value of the NDT fund investments were $5.9 million and $5.2 million for the three month periods ended March 31, 2012, and 2011, respectively. Net realized gains related to sales of investments, dividends and interest payments received from investments held by the NDT fund were $13.6 million and $10.5 million for the three month periods ended March 31, 2012 and 2011, respectively. Both, unrealized and realized gains and losses on the NDT fund investments are included in other income (expense), net, in the condensed consolidated statements of operations and comprehensive income.

(5) Fair Value Measurements

We have implemented the accounting requirements for financial assets, financial liabilities, non-financial assets and non-financial liabilities reported or disclosed at fair value. The requirements define fair value, establish a three level hierarchy for measuring fair value in GAAP, and expand disclosures about fair value measurements. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that a company has the ability to access at the measurement date. Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the assets or liabilities.

This hierarchy requires us to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while we believe our valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date. Assets are classified in their entirety based on the lowest level of input that is significant to their fair value measurement.

The carrying value of accounts receivable, costs, and estimated earnings in excess of billings on uncompleted contracts, prepaid assets, accounts payable, and accrued expenses approximate their fair value principally because of the short-term nature of these assets and liabilities.

The fair market value of our debt is based on quoted market prices from the over-the-counter restricted market. The fair market value of our senior secured credit facility was approximately $532.3 million as of March 31, 2012 and $524.4 million as of December 31, 2011. The carrying value of our senior secured credit facility was $527.0 million as of March 31, 2012 and December 31, 2011. We also had outstanding senior notes obligations with a carrying amount of $300.0 million as of March 31, 2012 and December 31, 2011, with a fair market value of approximately $309.7 million as of March 31, 2012 and $280.9 million as of December 31, 2011.

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EnergySolutions, Inc.

Notes Consolidated Financial Statements (Continued)

The following table presents the NDT fund investments measured at fair value (in thousands):

(1)                         Commingled funds and units of participation, which are similar to mutual funds, are maintained by investment companies and hold certain investments in accordance with stated fund objectives. The fair values of short-term commingled funds held within the trust funds, which generally hold short-term fixed income securities and are not subject to restrictions regarding the purchase or sale of shares, are derived from observable prices. Commingled funds are categorized in Level 2 because the fair value of the funds are based on net asset values per fund share (the unit of account), primarily derived from the quoted prices in active markets on the underlying equity securities. Units of participation are categorized as Level 2 because the fair value of these securities is based primarily on observable prices of the underlying securities.

(2)                         For fixed income securities, multiple prices from pricing services are obtained from pricing vendors whenever possible, which enables cross-provider validations in addition to checks for unusual daily movements. A primary price source is identified based on asset type, class or issue for each security. The trustee monitors prices supplied by pricing services and may use a supplemental price source or change the primary price source of a given security if the portfolio managers challenge an assigned price and the trustee determines that another price source is considered to be preferable. U.S. Treasury securities are categorized as Level 1 because they trade in a highly liquid and transparent market. Investments with maturities of three months or less when purchased, including certain short-term fixed income securities, are considered cash equivalents and are also categorized as Level 1. The fair values of fixed income securities, excluding U.S. Treasury securities, are based on evaluated prices that reflect observable market information, such as actual trade information or similar securities, adjusted for observable differences and are categorized in Level 2.

(3)                         With respect to individually held equity securities, the trustee obtains prices from pricing services, whose prices are obtained from direct feeds from market exchanges. The fair values of equity securities held directly by the trust fund are based on quoted prices in active markets and are categorized in Level 1. Equity securities held individually are primarily traded on the New York Stock Exchange and NASDAQ Global Select Market, which contain only actively traded securities due to the volume trading requirements imposed by these national securities exchanges.

(4)                         Direct lending securities are investments in managed funds that invest in private companies for long-term capital appreciation.  The fair value of these securities is determined using either an enterprise value model or a bond valuation model.  The enterprise valuation model develops valuation estimates based on valuations of comparable public companies, recent sales of private and public companies, discounting the forecasted cash flows of the portfolio company, estimating the liquidation or collateral value of the portfolio company or its assets, considering offers from third parties to buy the portfolio company, its historical and projected financial results, as well as other factors that may impact value. Significant judgment is required in the applications of discounts or premiums applied to the prices of comparable companies for factors such as size, marketability and relative performance.  Under the bond valuation model, expected future cash flows are discounted using a discount rate.  The discount rate is composed of a market based rate for similar credits in the public market and an internal credit rate based on the underlying risk of the credit. Investments in direct lending funds are categorized as Level 3 because the fair value of these securities is based largely on inputs that are unobservable and also utilize complex valuation models. Investments in direct lending securities typically cannot be redeemed until maturity of the term loan.

The following table presents the rollforward for Level 3 assets and liabilities measured at fair value on a recurring basis (in thousands):

(6) Joint Ventures

We use the equity method of accounting for our unconsolidated joint ventures. Under the equity method, we recognize our proportionate share of the net earnings of these joint ventures as a single line item under “Equity in income of unconsolidated joint ventures” in our condensed consolidated statements of operations and comprehensive income. In

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EnergySolutions, Inc.

Notes Consolidated Financial Statements (Continued)

accordance with authoritative guidance, we analyzed all of our joint ventures and classified them into two groups: (a) joint ventures that must be consolidated because we hold the majority voting interest, or because they are VIEs of which we are the primary beneficiary; and (b) joint ventures that do not need to be consolidated because we hold only a minority voting or other ownership interest, or because they are VIEs of which we are not the primary beneficiary. During the three month period ended March 31, 2012, we performed an assessment of our joint ventures and concluded that no unconsolidated joint ventures should be consolidated and that no consolidated joint ventures should be deconsolidated.

The table below presents unaudited financial information, derived from the most recent financial statements provided to us, in aggregate, for our unconsolidated joint ventures (in thousands):

Our percentage of ownership of unconsolidated joint ventures as of March 31, 2012 was:

We did not receive any dividend distributions from our unconsolidated joint ventures during the three month period ended March 31, 2012. We received $2.6 million of dividend distributions from our unconsolidated joint ventures during the three month period ended March 31, 2011.

Noncontrolling interest

We have majority voting rights for one of our minority owned joint ventures. Accordingly, we have reported its operations in our consolidated financial statements. Assets from our consolidated joint venture can only be used to settle its own obligations. Additionally, our assets cannot be used to settle the joint ventures’ obligations because this minority owned joint venture does not have recourse to our general credit. In December 2011, we acquired 100% of the noncontrolling interest in our Isotek Systems, LLC consolidated joint venture. Prior to the acquisition, Isotek Systems, LLC’s operations were included in our consolidated financial statements with the noncontrolling interest reflected.

We record noncontrolling interest income which reflects the portion of the earnings of operations which are applicable to other minority interest partners. Cash payments, representing the distributions of the investors’ share of cash generated by operations, are recorded as a reduction in noncontrolling interests. Noncontrolling interest income for the three month periods ended March 31, 2012 and 2011 was $0 and $0.9 million, respectively. No distributions were made for the three month periods ended March 31, 2012 and 2011.

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EnergySolutions, Inc.

Notes Consolidated Financial Statements (Continued)

(7) Goodwill

As of March 31, 2012 and December 31, 2011, we had recorded $308.1 million and $306.4 million, respectively, of goodwill related to domestic and foreign acquisitions. Goodwill related to the acquisitions of foreign entities is translated into U.S. dollars at the exchange rate in effect at the balance sheet date. The related translation gains and losses are included as a separate component of stockholders’ equity in accumulated other comprehensive income (loss) in the consolidated balance sheets. For the three month periods ended March 31, 2012 and 2011, we recorded translation gains of $1.7 million and $1.8 million, respectively, related to goodwill denominated in foreign currencies.

In accordance with authoritative guidance for accounting for Goodwill and Other Intangible Assets, we perform an impairment test for goodwill annually, or when events occur or circumstances change that would, more likely than not, reduce the fair value of a reporting unit below its carrying value. Our annual testing date is April 1. For purposes of the goodwill impairment assessment, goodwill is allocated to each of our reporting units which are Government Group, Commercial Services, LP&D and International. These reporting units were determined based on our internal management reporting and organizational structure. Goodwill is assigned to each of these reporting units based on which of the reporting units derive the benefits of an acquired company. If multiple reporting units benefit from an acquisition, goodwill is allocated to each reporting unit based on an allocation of revenue between the reporting units at the acquisition date.

We test goodwill for impairment by first comparing the book value of net assets to the fair value of the reporting units. If the fair value is determined to be less than the book value, a second step is performed to compute the amount of impairment as the difference between the estimated fair value of goodwill and the carrying value. We estimate the fair value of the reporting units using discounted cash flows. Forecasts of future cash flow are based on our best estimate of future net revenue and operating expenses, based primarily on pricing, market segment share, and general economic conditions. Changes in these forecasts could significantly change the amount of impairment recorded, if any. In determining the fair value of the reporting units, we probability weight the future business opportunities based on our internal assessments. However, some of the proposals are for very substantial contract awards, and winning or losing those bids can have a significant impact on our fair value calculations.

During the fourth quarter of 2011 and as described further in our Annual Report on Form 10-K for the year ended December 31, 2011, we determined that an interim impairment analysis was required as of December 31, 2011, and based on the preliminary results of this analysis, we recorded a non-cash goodwill impairment charge for the Government Group and LP&D reporting units. We completed the second step of this analysis during the first quarter of 2012, and no adjustments were recorded as a result of the completion of this assessment. From the date of our interim goodwill impairment assessment through the date of this report, there were no events or circumstances that indicated that additional impairment exists in any of our reporting units.  As such, no additional impairment charges were recorded for the three month period ended March 31, 2012.

(8) Other Intangible Assets

Other intangible assets subject to amortization consist principally of amounts assigned to permits, customer relationships, non-compete agreements and technology.  All of our intangibles are subject to amortization.

Other intangible assets consisted of the following (in thousands):

Amortization expense was $6.5 million and $6.6 million for the three month periods ended March 31, 2012 and 2011, respectively. In addition, we recorded translation gains of $1.8 million and $3.1 million, for the three month periods ended March 31, 2012 and 2011, respectively, related to intangible assets denominated in foreign currencies.

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EnergySolutions, Inc.

Notes Consolidated Financial Statements (Continued)

(9) Senior Credit Facilities and Senior Notes

Our outstanding long-term debt consists of the following (in thousands):

(1)          The variable interest rate on borrowings under our senior secured credit facility was 6.25% as of March 31, 2012 and December 31, 2011.

On August 13, 2010, we entered into a senior secured credit facility with JPMorgan Chase Bank, N.A., as the administrative and collateral agent, consisting of a senior secured term loan (the “Term Loan”) in an aggregate principal amount of $560 million at a discount rate of 2.5%, and a senior secured revolving credit facility (the “Revolving Credit Facility”) with availability of $105.0 million, of which $34.2 million was used to fund letters of credit issued as of March 31, 2012. Borrowings under the senior secured credit facility bear interest at a rate equal to: (a) Adjusted LIBOR plus 4.50%, or ABR plus 3.50% in the case of the Term Loan; (b) Adjusted LIBOR plus 4.50%, or ABR plus 3.50% in the case of the Revolving Credit Facility, and (c) a per annum fee equal to the spread over Adjusted LIBOR under the Revolving Credit Facility, along with a fronting fee and issuance and administration fees in the case of revolving letters of credit. The proceeds of the senior secured credit facility were used to repay outstanding indebtedness under former credit agreements, collateralize reimbursement obligations to the deposit issuing banks with respect to deposit letters of credit, replace synthetic letters of credit issued under former credit agreements, and provide credit support for obligations acquired under the agreements with Exelon. As of March 31, 2012, borrowings equivalent to $310.2 million, under the Term Loan, were held in a restricted cash account as collateral for our reimbursement obligations with respect to letters of credit.

The Term Loan amortizes in equal quarterly installments of $1.3 million payable on the last day of each calendar quarter with the balance being payable on August 13, 2016. In addition to the scheduled repayments, we are required to prepay borrowings under the senior secured credit facility with (1) 100% of the net cash proceeds received from non-ordinary course asset sales or other dispositions, or as a result of a casualty or condemnation, subject to reinvestment provisions and other customary adjustments, (2) 100% of the net proceeds received from the issuance of debt obligations other than certain permitted debt obligations, (3) 50% of excess cash flow (as defined in the senior secured credit facility), if the leverage ratio is equal to or greater than 3.0 to 1.0, or 25% of excess cash flow if the leverage ratio is less than 3.0 to 1.0 but greater than 1.0 to 1.0, reduced by the aggregate amount of optional prepayments of Term Loans made during the applicable fiscal year. If the leverage ratio is equal to or less than 1.0 to 1.0, we are not required to prepay the Term Loans. The excess cash flow calculations (as defined in the senior secured credit facility), are prepared annually as of the last day of each fiscal year. Prepayments of debt resulting from the excess cash flow calculations are due annually five days after the date that the Annual Report on Form 10-K for such fiscal year is filed with the SEC.

As of March 31, 2012, we had mandatory principal repayments based on scheduled repayments of $1.3 million due within the next 12 months. We have not made any principal repayments during 2012. We made principal repayments totaling $1.4 million, for the three month period ended March 31, 2011.

The senior secured credit facility requires us to maintain a leverage ratio (based upon the ratio of indebtedness for money borrowed to consolidated adjusted EBITDA, as defined in the senior secured credit facility) and an interest coverage ratio (based upon the ratio of consolidated adjusted EBITDA to consolidated cash interest expense), both of which are calculated quarterly. Failure to comply with these financial ratio covenants would result in an event of default under the senior secured credit facility and, absent a waiver or an amendment from the lenders, preclude us from making further borrowings under the senior secured credit facility and permit the lenders to accelerate repayment of all outstanding borrowings under the senior secured credit facility. Based on the formulas set forth in the senior secured credit facility, we are required to maintain a maximum total leverage ratio of 4.25 for the quarter ending March 31, 2012, which is reduced by 0.25 on an annual basis through the maturity date. We are required to maintain a minimum cash interest coverage ratio of 2.0 from the quarter ended

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Notes Consolidated Financial Statements (Continued)

March 31, 2012 through the quarter ended September 30, 2014 and 2.25 through the maturity date. As of March 31, 2012, our total leverage and cash interest coverage ratios were 2.86 and 2.84, respectively.

The senior secured credit facility also contains a number of affirmative and restrictive covenants including limitations on mergers, consolidations and dissolutions, sales of assets, investments and acquisitions, indebtedness, liens, affiliate transactions, and dividends and restricted payments. Under the senior secured credit facility, we are permitted maximum annual capital expenditures of $40.0 million for 2012, and each year thereafter, plus for each year the lesser of (1) a one year carryforward of the unused amount from the previous fiscal year and (2) 50% of the amount permitted for capital expenditures in the previous fiscal year. The senior secured credit facility contains events of default for non-payment of principal and interest when due, a cross-default provision with respect to other indebtedness having an aggregate principal amount of at least $5.0 million, and an event of default that would be triggered by a change of control, as defined in the senior secured credit facility. Capital expenditures for the three month period ended March 31, 2012 were $7.0 million. As of March 31, 2012, we were in compliance with all of the covenants under our senior secured credit facility.

The obligations under the senior secured credit facility are secured by a lien on substantially all of our assets and the assets of each of our domestic subsidiary guarantors, including a pledge of equity interests with the exception of the equity interests in our subsidiary ZionSolutions, LLC, and other special purpose subsidiaries, whose organizational documentation prohibits or limits such pledge.

On August 13, 2010, we also completed a private offering of $300 million 10.75% senior notes at a discount rate of 1.3%. The senior notes are governed by an indenture among EnergySolutions, Inc, EnergySolutions, LLC, the guarantor parties thereto, and Wells Fargo Bank, National Association, as trustee. Interest on the senior notes is payable semiannually in arrears on February 15 and August 15 of each year beginning on February 15, 2011. The senior notes rank in equal right of payment to all existing and future senior debt, and senior in right of payment to all future subordinated debt.  In May 2011, we filed a registration statement under the Securities Act, pursuant to a registration rights agreement entered into in connection with the senior notes offering. The SEC declared the registration statement relating to the exchange offer effective on May 27, 2011, and the exchange of the registered senior notes for the unregistered senior notes was consummated on May 31, 2011. We did not receive any proceeds from the exchange offer transaction.

At any time prior to August 15, 2014, we are entitled to redeem all or a portion of the senior notes at a redemption price equal to 100% of the principal amount of the senior notes plus an applicable make-whole premium, as of, and accrued and unpaid interest to, the redemption date. In addition, prior to August 15, 2013, we may redeem up to 35% of the aggregate principal amount of the senior notes with the net cash proceeds from certain public equity offerings at a redemption price of 110.75% of the principal amount, plus accrued and unpaid interest to the date of redemption. In addition, on or after August 15, 2014, we may redeem all or a portion of the senior notes at the following redemption prices during the 12-month period commencing on August 15 of the years set forth below, plus accrued and unpaid interest to the redemption date.

The senior notes are guaranteed on a senior unsecured basis by all of our domestic restricted subsidiaries that guarantee the senior secured credit facility. The senior notes and related guarantees are effectively subordinated to our secured obligations, including the senior secured credit facility and related guarantees, to the extent of the value of assets securing such debt. The senior notes are structurally subordinated to all liabilities of each of our subsidiaries that do not guarantee the senior notes. If we experience a change in control, each holder will have the right to require that we purchase all or a portion of such holder’s senior notes at a purchase price of 101% of the principal amount, plus accrued and unpaid interest to the date of the purchase. The indenture contains, among other things, certain covenants limiting our ability, and the ability of one restricted subsidiary, to incur or guarantee additional indebtedness, pay dividends or make other restricted payments, make certain investments, create or incur liens, sell assets and subsidiary stock, transfer all or substantially all of our assets, or enter into a merger or consolidation transactions, and enter into transactions with affiliates.

During the three month period ended March 31, 2012, we made cash interest payments totaling $25.0 million related to our outstanding debt obligations as of that date. During the three month period ended March 31, 2011, we made cash interest payments totaling $25.5 million, related to our outstanding debt obligations as of that date.

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Notes Consolidated Financial Statements (Continued)

(10) Facility and Equipment Decontamination and Decommissioning

We recognize AROs when we have a legal obligation to perform D&D activities upon retirement of an asset. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset, as is the case for all our AROs except for the Zion Station ARO, as described below.

Our traditional AROs are based on a cost estimate for a third party to perform the D&D work, which is inflated, using an inflation rate, to the expected time at which the D&D activity will occur, and then discounted back, using our credit adjusted risk free rate, to the present value. Subsequent to the initial measurement, the AROs are adjusted at the end of each period to reflect the passage of time and changes in the estimated future cash flows underlying the obligations.

The ARO established in connection with the Zion Station project differs somewhat from our traditional AROs. The assets acquired in the Zion Station transaction have no fair value, no future useful life, and are in a shut-down, non-operating state. As a result, the ARO established in connection with the Zion Station project is not accompanied by a related depreciable asset. Changes to the ARO liability due to accretion expense and changes in cost estimates are recorded in cost of revenue in our consolidated statements of operations and comprehensive income (loss).

Also, as we will perform most of the work related to the Zion Station ARO with internal resources, a gain will be recognized for the difference between our actual costs incurred and the recorded ARO which includes an element of profit. Due to the nature of this contract and the purpose of the license stewardship initiative, we have presented this gain in cost of revenue rather than as a credit to operating expense, as we would with our other AROs.

Our facility and equipment D&D liabilities consist of the following (in thousands):

The following is a rollforward of our facilities and equipment ARO (in thousands):

For certain of our D&D obligations, we are required to deposit cash relating to our D&D obligation in the form of a restricted cash account, a deposit in escrow, or in a trust fund. D&D deposits consist principally of: (i) funds held in trust for completion of various site clean-up projects and (ii) funds deposited in connection with landfill closure, post-closure and remediation obligations. Although we are required to provide assurance to satisfy some of our D&D obligations in the form of insurance policies, restricted cash accounts, escrows or trust funds, these assurance mechanisms do not extinguish our D&D liabilities.

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Notes Consolidated Financial Statements (Continued)

The following table presents a summary of the D&D deposits available to fund closure and post-closure obligations related to our AROs (in thousands):