All amounts in U.S. dollars, unless otherwise noted.

1. Basis of Presentation

NOVA Chemicals is incorporated under the laws of the Canada Business Corporations Act. Where used in these financial statements, “NOVA Chemicals” or “the Corporation” or “the Company” means NOVA Chemicals Corporation alone or together with its subsidiaries and affiliates, depending on the context in which such terms are used. The Consolidated Financial Statements include the accounts of the Corporation, its subsidiaries and the proportionate share of the accounts of its joint ventures. Where reference is made to balances due to and from, and transactions with affiliate; “affiliate” means INEOS NOVA (see Note 5 on page 83) and other joint ventures. These transactions arise from business conducted between NOVA Chemicals and INEOS NOVA and other joint ventures.

These Consolidated Financial Statements have been prepared by management in accordance with Canadian Generally Accepted Accounting Principles (GAAP). These accounting principles are different in some respects from those generally accepted in the United States and the significant differences are described in Note 21, “United States Generally Accepted Accounting Principles” (U.S. GAAP).

The Corporation reports its Consolidated Financial Statements in U.S. dollars.

The preparation of these Consolidated Financial Statements in conformity with Canadian GAAP requires management to make estimates and assumptions that affect amounts reported and disclosed in the financial statements and related notes. Actual results could differ materially from those estimates due to factors such as fluctuations in commodity prices, foreign exchange rates, interest rates, changes in economic conditions and regulatory changes. Examples of significant estimates include: the estimated useful lives of assets; the recoverability of tangible assets; certain actuarial and economic assumptions used in determining defined benefit pension costs, accrued pension benefit obligations and pension plan assets; and estimates of cash flows related to environmental site restoration and clean-up and the resulting asset retirement obligations.

2. Summary of Significant Accounting Policies

CHANGES IN ACCOUNTING POLICIES

Changes in Accounting Policies and Estimates, and Errors. On Jan. 1, 2007, NOVA Chemicals adopted new accounting standards as prescribed by the Canadian Institute of Chartered Accountants (“CICA”) Section 1506, Changes in Accounting Policies and Estimates, and Errors, which provides that an entity is permitted to change accounting policies only when it is required by a primary source of GAAP, or when the change results in a reliable and more relevant presentation in the financial statements. This new standard applies to fiscal years beginning on or after Jan. 1, 2007.

Financial Instruments — Recognition and Measurement (CICA Section 3855).On Jan. 1, 2007, NOVA Chemicals adopted CICA 3855, which establishes standards for recognizing and measuring financial assets, financial liabilities and non-financial derivatives. Under CICA 3855, all financial assets must be classified as either held-for-trading, available-for-sale, held-to-maturity investments or loans and receivables. All financial liabilities must be classified as held-for-trading or other financial liabilities. All financial instruments, including derivatives, are included on the Consolidated Balance Sheets and are measured at fair value, except for held-to-maturity investments, loans and receivables and other financial liabilities, which are measured at amortized cost. Subsequent measurement and recognition of changes in fair value depend on the instrument’s initial classification. Held-for-trading financial instruments are measured at fair value, and all gains and losses are included in net income (loss) in the period in which they arise. Available-for-sale financial instruments are measured at fair value, determined by published market prices in an active market, except for investments in equity instruments that do not have quoted market prices in an active market which are measured at cost. Changes in fair value are recorded in other comprehensive income (loss) until the assets are removed from the balance sheet. Investments classified as available-for-sale are written down to fair value through income whenever it is necessary to reflect other-than-temporary impairment. Realized gains and losses on the disposal of available-for-sale securities are recognized in other gains and losses. Also, transaction costs related to all financial assets and liabilities are added to the acquisition or issue cost, unless the financial instrument is classified as held-for-trading, in which case the transaction costs are recognized immediately in net income (loss).