DuPont 2009 Annual Report Download - page 61

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15FEB201017414418
Report of Independent Registered Public Accounting Firm
To the Stockholders and the Board of Directors of
E. I. du Pont de Nemours and Company:
In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of income,
stockholders’ equity and cash flows present fairly, in all material respects, the financial position of E. I. du Pont de
Nemours and Company and its subsidiaries at December 31, 2009 and 2008, and the results of their operations and
their cash flows for each of the three years in the period ended December 31, 2009 in conformity with accounting
principles generally accepted in the United States of America. In addition, in our opinion, the financial statement
schedule listed in the index appearing under Item 15(a) (2) presents fairly, in all material respects, the information set
forth therein when read in conjunction with the related consolidated financial statements. Also in our opinion, the
Company maintained, in all material respects, effective internal control over financial reporting as of December 31,
2009, based on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring
Organizations of the Treadway Commission (COSO). The Company’s management is responsible for these financial
statements and financial statement schedule, for maintaining effective internal control over financial reporting and for
its assessment of the effectiveness of internal control over financial reporting, included in ‘‘Management’s Report on
Internal Control over Financial Reporting’’ appearing on page F-2. Our responsibility is to express opinions on these
financial statements, on the financial statement schedule and on the Company’s internal control over financial reporting
based on our integrated audits. We conducted our audits in accordance with the standards of the Public Company
Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain
reasonable assurance about whether the financial statements are free of material misstatement and whether effective
internal control over financial reporting was maintained in all material respects. Our audits of the financial statements
included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements,
assessing the accounting principles used and significant estimates made by management, and evaluating the overall
financial statement presentation. Our audit of internal control over financial reporting included obtaining an
understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing
and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also
included performing such other procedures as we considered necessary in the circumstances. We believe our audits
provide a reasonable basis for our opinions.
As discussed in the consolidated financial statements, the company changed the manner in which it accounted for
uncertainty in income taxes in 2007.
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding
the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with
generally accepted accounting principles. A company’s internal control over financial reporting includes those policies
and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are
recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting
principles, and that receipts and expenditures of the company are being made only in accordance with authorizations
of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely
detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on
the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements.
Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become
inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may
deteriorate.
PricewaterhouseCoopers LLP
Philadelphia, Pennsylvania
February 17, 2010
F-3