Document:

Filed by Bowne Pure Compliance

Exhibit 4(r)(4)

[EXECUTION COPY]

AMENDMENT NO. 3

TO

AMENDED AND RESTATED CREDIT AGREEMENT

This AMENDMENT NO. 3, dated as of September 16, 2008 (this “Amendment”), is made by and among
TUCSON ELECTRIC POWER COMPANY, an Arizona corporation (the “Borrower”), the lenders listed on the
signature pages of this Amendment as “Lenders” (such lenders, together with their respective
permitted assignees from time to time, being referred to herein, collectively, as the “Lenders”),
and UNION BANK OF CALIFORNIA, N.A., as administrative agent for the Lenders (in such capacity, the
“Administrative Agent”).

PRELIMINARY STATEMENT:

The Borrower, the Lenders, the Issuing Banks party thereto, The Bank of New York and JPMorgan
Chase Bank, N.A., as Co-Syndication Agents, Wells Fargo Bank, National Association and ABN AMRO
Bank N.V., as Co-Documentation Agents, and the Administrative Agent previously entered into that
certain Amended and Restated Credit Agreement, dated as of August 11, 2006, as amended by Amendment
No. 1 thereto, dated as of September 1, 2006, and Amendment No. 2 thereto, dated as of May 30, 2008
(as so amended, the “Existing Agreement”, as amended by this Amendment, the “Amended Agreement”,
and as the Amended Agreement may hereafter be amended, supplemented or otherwise modified from time
to time, the “Credit Agreement”). The Borrower desires to amend Section 6.07 (Leverage Test) of
the Existing Agreement in certain particulars. Each of the Borrower, the Required Lenders and the
Administrative Agent has agreed to such amendment, on the terms and conditions set forth herein.
The parties therefore agree as follows (capitalized terms used but not defined herein having the
meanings assigned such terms in the Existing Agreement):

SECTION 1.  Amendment to Existing Agreement. The Existing Agreement is, effective as of the
date hereof and subject to the satisfaction of the conditions precedent set forth in Section 2
hereof, hereby amended as follows:

(a) Leverage Test. Section 6.07 of the Existing Agreement is hereby amended and restated in
its entirety to read as follows:

SECTION 6.07. Leverage Test. The Borrower will not permit the ratio of
(a) Consolidated Total Indebtedness at the end of any fiscal quarter to (b) Consolidated
EBITDA for the twelve-month period ended on such date to be greater than the amount
specified in the chart below for the period in which such date shall occur:

	 	 	 	 	 
	Period	 	Maximum Ratio	 
	From the Effective Date through and including December 31,
2006
	 	 	4.50	 
	From January 1, 2007 through and including December 31, 2007
	 	 	4.25	 
	From January 1, 2008 through and including June 30, 2008
	 	 	4.00	 
	From July 1, 2008 through and including September 30, 2008
	 	 	4.50	 
	From October 1, 2008 through and including December 31, 2008
	 	 	4.75	 
	From January 1, 2009 through and including June 30, 2009
	 	 	4.50	 
	From and after July 1, 2009
	 	 	4.00	 

 

 

 

SECTION 2.  Conditions of Effectiveness of Amendment. The amendment to the Existing Agreement
set forth in Section 1 hereof shall become effective as of the date hereof when, and only when, the
Administrative Agent shall have received (a) counterparts of this Amendment executed by the
Borrower, the Required Lenders and the Administrative Agent and (b) for the account of each Lender
that delivers an executed counterpart of this Amendment on or before September 16, 2008, a
non-refundable amendment fee of 0.10% of such Lender’s Aggregate Commitment, in immediately
available funds.

SECTION 3.  Representations and Warranties of the Borrower. The Borrower represents and
warrants as follows:

(a) The execution and delivery by the Borrower of this Amendment, and the performance by the
Borrower of this Amendment and the Amended Agreement, are within the Borrower’s organizational
powers and have been duly authorized by all necessary corporate and, if required, stockholder
action, and do not and will not (i) violate any Requirement of Law, (ii) violate or result in a
default under any indenture, agreement or other instrument binding upon the Borrower or any of its
Consolidated Subsidiaries or its assets, or give rise to a right thereunder to require any payment
to be made by the Borrower or any of its Consolidated Subsidiaries, or (iii) result in the creation
or imposition of any Lien on any asset of the Borrower or any of its Consolidated Subsidiaries,
except Liens created under the Loan Documents or under the Mortgage Indenture. This Amendment has
been duly executed and delivered by the Borrower.

(b) The execution and delivery by the Borrower of this Amendment, and the performance by the
Borrower of this Amendment and the Amended
Agreement, do not require any consent or approval of, registration or filing with, or any
other action by, any Governmental Authority, except as set forth in Section 3.03(a) of the Existing
Agreement.

(c) Each of this Amendment and the Amended Agreement constitutes a legal, valid and binding
obligation of the Borrower, enforceable in accordance with its terms, subject to applicable
bankruptcy, insolvency, reorganization, moratorium or other laws affecting creditors’ rights
generally and subject to general principles of equity, regardless of whether considered in a
proceeding in equity or at law.

(d) No Default or Event of Default has occurred and is continuing.

 

2

 

SECTION 4.  Reference to and Effect on the Existing Agreement. (a) Upon the effectiveness of
this Amendment: (i) each reference in the Existing Agreement to “this Agreement”, “hereunder”,
“hereof” or words of like import referring to the Existing Agreement shall mean and be a reference
to the Credit Agreement; and (ii) each reference in any other Loan Document to “the Credit
Agreement”, “thereunder”, “thereof” or words of like import referring to the Existing Agreement
shall mean and be a reference to the Credit Agreement.

(b) Except as specifically amended or waived above, the Existing Agreement shall continue to
be in full force and effect and is hereby in all respects ratified and confirmed. Without limiting
the generality of the foregoing, the Security Documents and all of the Collateral described therein
do and shall continue to secure the payment of all Obligations.

(c) The execution, delivery and effectiveness of this Amendment shall not, except as expressly
provided herein, operate as a waiver of any right, power or remedy of the Lenders, the Issuing
Banks or the Administrative Agent under the Existing Agreement or any other Loan Document, nor
constitute a waiver of any provision of the Existing Agreement or any other Loan Document.

SECTION 5.  Costs and Expenses. The Borrower agrees to pay on demand all reasonable
out-of-pocket expenses of the Administrative Agent in connection with the preparation, negotiation,
syndication, execution and delivery of this Amendment and the other instruments and documents to be
delivered hereunder, including, without limitation, the reasonable fees, charges and disbursements
of counsel to the Administrative Agent with respect thereto and with respect to advising the
Administrative Agent as to its rights and responsibilities hereunder and thereunder, and all
out-of-pocket expenses incurred by the Administrative Agent, any Issuing Bank or any Lender
(including, without limitation, the fees, charges and disbursements of any counsel for the
Administrative Agent, any Issuing Bank or any Lender) in connection with the enforcement (whether
through negotiations, legal proceedings or otherwise) of this Amendment.

 

3

 

SECTION 6.  Execution in Counterparts. This Amendment may be executed in any number of
counterparts and by different parties hereto in separate counterparts, each of which when so
executed and delivered shall be deemed to be an original and all of which taken together shall
constitute but one and the same instrument. In furtherance of the foregoing, it is understood and
agreed that signatures hereto submitted by facsimile or other electronic transmission shall be
deemed to be, and shall constitute, original signatures.

SECTION 7.  Governing Law. This Amendment shall be governed by, and construed in accordance
with, the laws of the State of the New York.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

 

4

 

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed by their
respective officers thereunto duly authorized, as of the date first above written.

	 	 	 	 	 
	 	TUCSON ELECTRIC POWER COMPANY

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 
	 	UNION BANK OF CALIFORNIA, N.A., 

as Administrative Agent and a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-1

 

	 	 	 	 	 
	 	WELLS FARGO BANK, NATIONAL ASSOCIATION, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-2

 

	 	 	 	 	 
	 	ABN AMRO BANK N.V., as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 	 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-3

 

	 	 	 	 	 
	 	THE BANK OF NEW YORK MELLON, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-4

 

	 	 	 	 	 
	 	JPMORGAN CHASE BANK, N.A., as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-5

 

	 	 	 	 	 
	 	BANK HAPOALIM B.M., as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 	 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-6

 

	 	 	 	 	 
	 	BAYERISCHE LANDESBANK, NEW YORK BRANCH, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	   	 
	 	 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-7

 

	 	 	 	 	 
	 	BNP PARIBAS, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 	 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-8

 

	 	 	 	 	 
	 	COBANK, ACB, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-9

 

	 	 	 	 	 
	 	COMERICA WEST INCORPORATED, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-10

 

	 	 	 	 	 
	 	COMMERZBANK AG, NEW YORK AND 

CAYMAN BRANCHES, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 	 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-11

 

	 	 	 	 	 
	 	DRESDNER BANK AG, NEW YORK AND

 CAYMAN BRANCHES, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 	 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-12

 

	 	 	 	 	 
	 	KBC BANK, N.V., as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 	 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-13

 

	 	 	 	 	 
	 	LLOYDS TSB BANK PLC, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 	 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-14

 

	 	 	 	 	 
	 	SOVEREIGN BANK, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-15

 

	 	 	 	 	 
	 	THE BANK OF TOKYO-MITSUBISHI UFJ,
LTD., NEW YORK BRANCH (as successor to

 UFJ BANK LIMITED), as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-16

 

	 	 	 	 	 
	 	U.S. BANK NATIONAL ASSOCIATION,

 as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-17

 

	 	 	 	 	 
	 	WACHOVIA BANK, NATIONAL ASSOCIATION, as a Lender

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 3 to Tucson Electric Amended and Restated Credit Agreement

 

S-18Filed by Bowne Pure Compliance

Exhibit 4(w)(2)

[EXECUTION COPY]

AMENDMENT NO. 1

TO

AMENDED AND RESTATED CREDIT AGREEMENT

This AMENDMENT NO. 1, dated as of September 16, 2008 (this “Amendment”), is made by and among
UNISOURCE ENERGY CORPORATION, an Arizona corporation (the “Borrower”), the lenders listed on the
signature pages of this Amendment as “Lenders” (such lenders, together with their respective
permitted assignees from time to time, being referred to herein, collectively, as the “Lenders”),
and UNION BANK OF CALIFORNIA, N.A., as administrative agent for the Lenders (in such capacity, the
“Administrative Agent”).

PRELIMINARY STATEMENT:

The Borrower, the Lenders party thereto, The Bank of New York and JPMorgan Chase Bank, N.A.,
as Co-Syndication Agents, Wells Fargo Bank, National Association and ABN AMRO Bank N.V., as
Co-Documentation Agents, and the Administrative Agent previously entered into that certain Amended
and Restated Credit Agreement, dated as of August 11, 2006 (the “Existing Agreement”, as amended by
this Amendment, the “Amended Agreement”, and as the Amended Agreement may hereafter be amended,
supplemented or otherwise modified from time to time, the “Credit Agreement”). The Borrower
desires to amend Section 6.13 (Leverage Test) of the Existing Agreement in certain particulars.
Each of the Borrower, the Required Lenders and the Administrative Agent has agreed to such
amendment, on the terms and conditions set forth herein. The parties therefore agree as follows
(capitalized terms used but not defined herein having the meanings assigned such terms in the
Existing Agreement):

SECTION 1.  Amendment to Existing Agreement. The Existing Agreement is, effective as of the
date hereof and subject to the satisfaction of the conditions precedent set forth in Section 2
hereof, hereby amended as follows:

(a) Leverage Test. Section 6.13 of the Existing Agreement is hereby amended and restated in
its entirety to read as follows:

SECTION 6.13. Leverage Test. The Borrower will not permit the ratio of
(a) Consolidated Total Indebtedness at the end of any fiscal quarter, commencing with the
fiscal quarter ending June 30, 2006, to (b) Consolidated EBITDA for the
four-fiscal-quarter period ended on such date to be greater than the amount specified in
the chart below for the period in which such date shall occur:

	 	 	 	 	 
	Period	 	Maximum Ratio	 
	From the Effective Date through and including December 31,
2006
	 	 	5.00	 
	From January 1, 2007 through and including June 30, 2008
	 	 	4.75	 
	From July 1, 2008 through and including September 30, 2008
	 	 	5.00	 
	From October 1, 2008 through and including December 31, 2008
	 	 	5.25	 
	From January 1, 2009 through and including June 30, 2009
	 	 	5.00	 
	From and after July 1, 2009
	 	 	4.50	 

 

 

 

SECTION 2.  Conditions of Effectiveness of Amendment. The amendment to the Existing Agreement
set forth in Section 1 hereof shall become effective as of the date hereof when, and only when, the
Administrative Agent shall have received (a) counterparts of this Amendment executed by the
Borrower, the Required Lenders and the Administrative Agent and, for purposes of determining
whether the conditions precedent set forth in Section 4.02 of the Existing Agreement to the making
of any Revolving Loan have been satisfied, the Lenders holding a majority in interest of the
Revolving Commitments, and (b) for the account of each Lender that delivers an executed counterpart
of this Amendment on or before September 16, 2008, a non-refundable amendment fee of 0.10% of the
sum of (i) such Lender’s Revolving Commitment and (ii) the aggregate outstanding principal amount
of such Lender’s Term Loans, in immediately available funds.

SECTION 3.  Representations and Warranties of the Borrower. The Borrower represents and
warrants as follows:

(a) The execution and delivery by the Borrower of this Amendment, and the performance by the
Borrower of this Amendment and the Amended Agreement, are within the Borrower’s organizational
powers and have been duly authorized by all necessary corporate and, if required, stockholder
action, and do not and will not (i) violate any Requirement of Law, (ii) violate or result in a
default under any indenture, agreement or other instrument binding upon the Borrower or any of its
Consolidated Subsidiaries or its assets, or give rise to a right thereunder to require any payment
to be made by the Borrower or any of its Consolidated Subsidiaries, or (iii) result in the creation
or imposition of any Lien on any asset of the Borrower or any of its Consolidated Subsidiaries,
except Liens
created under the Loan Documents. This Amendment has been duly executed and delivered by the
Borrower.

(b) The execution and delivery by the Borrower of this Amendment, and the performance by the
Borrower of this Amendment and the Amended Agreement, do not require any consent or approval of,
registration or filing with, or any other action by, any Governmental Authority, except as set
forth in Section 3.03(a) of the Existing Agreement.

(c) Each of this Amendment and the Amended Agreement constitutes a legal, valid and binding
obligation of the Borrower, enforceable in accordance with its terms, subject to applicable
bankruptcy, insolvency, reorganization, moratorium or other laws affecting creditors’ rights
generally and subject to general principles of equity, regardless of whether considered in a
proceeding in equity or at law.

(d) No Default or Event of Default has occurred and is continuing.

 

2

 

SECTION 4.  Reference to and Effect on the Existing Agreement. (a) Upon the effectiveness of
this Amendment: (i) each reference in the Existing Agreement to “this Agreement”, “hereunder”,
“hereof” or words of like import referring to the Existing Agreement shall mean and be a reference
to the Credit Agreement; and (ii) each reference in any other Loan Document to “the Credit
Agreement”, “thereunder”, “thereof” or words of like import referring to the Existing Agreement
shall mean and be a reference to the Credit Agreement.

(b) Except as specifically amended or waived above, the Existing Agreement shall continue to
be in full force and effect and is hereby in all respects ratified and confirmed. Without limiting
the generality of the foregoing, the Security Documents and all of the Collateral described therein
do and shall continue to secure the payment of all Obligations.

(c) The execution, delivery and effectiveness of this Amendment shall not, except as expressly
provided herein, operate as a waiver of any right, power or remedy of the Lenders or the
Administrative Agent under the Existing Agreement or any other Loan Document, nor constitute a
waiver of any provision of the Existing Agreement or any other Loan Document.

SECTION 5.  Costs and Expenses. The Borrower agrees to pay on demand all reasonable
out-of-pocket expenses of the Administrative Agent in connection with the preparation, negotiation,
syndication, execution and delivery of this Amendment and the other instruments and documents to be
delivered hereunder, including, without limitation, the reasonable fees, charges and disbursements
of counsel to the Administrative Agent with respect thereto and with respect to advising the
Administrative Agent as to its rights and responsibilities hereunder and thereunder, and all
out-of-pocket expenses incurred by the Administrative Agent or any Lender (including, without
limitation, the
fees, charges and disbursements of any counsel for the Administrative Agent or any Lender) in
connection with the enforcement (whether through negotiations, legal proceedings or otherwise) of
this Amendment.

 

3

 

SECTION 6.  Execution in Counterparts. This Amendment may be executed in any number of
counterparts and by different parties hereto in separate counterparts, each of which when so
executed and delivered shall be deemed to be an original and all of which taken together shall
constitute but one and the same instrument. In furtherance of the foregoing, it is understood and
agreed that signatures hereto submitted by facsimile or other electronic transmission shall be
deemed to be, and shall constitute, original signatures.

SECTION 7.  Governing Law. This Amendment shall be governed by, and construed in accordance
with, the laws of the State of the New York.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

 

4

 

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed by their
respective officers thereunto duly authorized, as of the date first above written.

	 	 	 	 	 
	 	UNISOURCE ENERGY CORPORATION

 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 
	 	
UNION BANK OF CALIFORNIA, N.A.,
 as
Administrative Agent and a Lender

 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 1 to UniSource Energy Amended and Restated Credit Agreement

 

S-1

 

	 	 	 	 	 
	 	WELLS FARGO BANK, NATIONAL 

ASSOCIATION, as a Lender

 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 1 to UniSource Energy Amended and Restated Credit Agreement

 

S-2

 

	 	 	 	 	 
	 	ABN AMRO BANK N.V., as a Lender

 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 	 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 1 to UniSource Energy Amended and Restated Credit Agreement

 

S-3

 

	 	 	 	 	 
	 	THE BANK OF NEW YORK MELLON, as a Lender

 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 1 to UniSource Energy Amended and Restated Credit Agreement

 

S-4

 

	 	 	 	 	 
	 	JPMORGAN CHASE BANK, N.A., as a Lender

 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 1 to UniSource Energy Amended and Restated Credit Agreement

 

S-5

 

	 	 	 	 	 
	 	CREDIT SUISSE, CAYMAN ISLANDS BRANCH

(as successor to
Credit Suisse First Boston, acting through its Cayman
Island Branch), as a Lender

 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 1 to UniSource Energy Amended and Restated Credit Agreement

 

S-6

 

	 	 	 	 	 
	 	COBANK, ACB, as a Lender

 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 1 to UniSource Energy Amended and Restated Credit Agreement

 

S-7

 

	 	 	 	 	 
	 	WACHOVIA BANK, NATIONAL
ASSOCIATION,
 as a Lender

 	 
	 	By:  	
 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

Signature Page to Amendment No. 1 to UniSource Energy Amended and Restated Credit Agreement

 

S-8

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