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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors and Shareholder of
Michigan Consolidated Gas Company
We have audited the consolidated statements of financial position of Michigan Consolidated Gas Company and subsidiaries (the
“Company”) as of December 31, 2007 and 2006 and the related consolidated statements of operations, cash flows, and changes in
shareholder’ s equity and comprehensive income for each of the three years in the period ended December 31, 2007. These financial
statements are the responsibility of the Company’ s management. Our responsibility is to express an opinion on the consolidated
financial statements based on our 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 audit to obtain reasonable assurance about whether the financial statements are free of
material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over
financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit
procedures that are appropriate in the circumstances but not for the purpose of expressing an opinion on the effectiveness of the
Company’ s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes 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, as well as evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for our opinion.
In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of Michigan
Consolidated Gas Company and subsidiaries at December 31, 2007 and 2006, and the results of their operations and their cash flows
for each of the three years in the period ended December 31, 2007 in conformity with accounting principles generally accepted in the
United States of America.
As discussed in Notes 2 and 11 to the consolidated financial statements, in connection with the required adoption of new accounting
standards, in 2006 the Company changed its method of accounting for share based payments and defined benefit pension and other
postretirement plans, respectively. As discussed in Note 1 to the consolidated financial statements, in connection with the required
adoption of new accounting standards, in 2005 the Company changed its method of accounting for asset retirement obligations.
/S/ DELOITTE & TOUCHE LLP
Detroit, Michigan
March 7, 2008
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