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Filing tables
Filing exhibits
- 10-Q Quarterly report
- 4 Amendment No. 1 to Amended and Restated Credit Agreement
- 12 Computation of Ratio of Earnings to Fixed Charges - Uns
- 12 Computation of Ratio of Earnings to Fixed Charges - Tep
- 15 Letter Re Unaudited Interim Financial Information
- 31 Certification (Uns) - James S. Pignatelli
- 31 Certification (Uns) - Kevin P. Larson
- 31 Certification (Tep) - James S. Pignatelli
- 31 Certification (Tep) - Kevin P. Larson
- 32 Statements of Corporate Officers
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External links
Exhibit 15
November 1, 2006
Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549
Commissioners:
We are aware that our report dated November 1, 2006 on our review of interim financial information of UniSource Energy Corporation (the "Company") for the three and nine-month periods ended September 30, 2006 and 2005 and included in the Company's quarterly report on Form 10-Q for the quarter ended September 30, 2006 is incorporated by reference in the Company’s Registration Statements on Form S-8 (Nos.333-43765, 333-43767, 333-43769, 333-53309, 333-53333, 333-53337 and 333-99317), and on Form S-3 (Nos. 333-31043, 333-93769, 333-103392 and 333-126141).
Very truly yours,
/s/ PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
Chicago, Illinois