FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT Dated as of November 4, 2022

Exhibit 10.6

EXECUTION VERSION

FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT

Dated as of November 4, 2022

This FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”) is by and among CENTURI GROUP, INC., a Nevada corporation (the “Company”), and each Additional Borrower that becomes a party thereto in accordance with Section 5.17 thereto, as US Borrowers, CENTURI CANADA DIVISION INC., a corporation organized under the laws of the Province of Ontario, Canada, and each Additional Borrower that becomes a party thereto in accordance with Section 5.17 thereto, as Canadian Borrowers, the other Credit Parties party hereto, the lenders party hereto (the “Lenders”) and ▇▇▇▇▇ FARGO BANK, NATIONAL ASSOCIATION, as administrative agent for the Lenders (in such capacity, the “Administrative Agent”).

Statement of Purpose

WHEREAS, the Company, the Lenders party thereto, the other Credit Parties party thereto and the Administrative Agent are parties to the Second Amended and Restated Credit Agreement dated as of August 27, 2021 (as amended hereby and as further amended, restated, extended, supplemented or otherwise modified from time to time, the “Credit Agreement” and the Credit Agreement prior to giving effect to this Amendment being referred to as the “Existing Credit Agreement”), pursuant to which the Lenders have extended certain credit facilities to the Borrowers.

WHEREAS, the Company and the Administrative Agent have elected to make an Early Opt-in Election to transition from LIBOR to Term SOFR solely with respect to the Revolving Credit Facility, pursuant to the terms of the Existing Credit Agreement.

WHEREAS, the Company has requested that the Administrative Agent and the Revolving Credit Lenders and Issuing Lenders agree to amend the Existing Credit Agreement as more specifically set forth herein.

NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereto hereby agree as follows:

1. Capitalized Terms. All capitalized terms not otherwise defined in this Amendment (including without limitation in the introductory paragraph and the Preliminary Statements hereto) shall have the meanings as specified in the Credit Agreement (as set forth on Annex A attached hereto).

2. Amendments to the Credit Agreement. As of the Effective Date (as defined below) and subject to and in accordance with the terms and conditions set forth herein:

(a) the body of the Existing Credit Agreement (excluding the Schedules and Exhibits thereto, other than as set forth in clause (b) of this Section 2) are hereby amended to (i) delete the stricken text (indicated textually in the same manner as the following example: stricken text), (ii) add the double-underlined text (indicated textually in the same manner as the following example: double-underlined text) and (iii) move the green double-underlined text (indicated textually in the same manner as the following example: double-underlined text), in each case, as set forth in the Credit Agreement attached hereto as Annex A.

(b) Exhibit B (Form of Notice of Borrowing), Exhibit D (Form of Notice of Prepayment) and Exhibit E (Form of Notice of Conversion/Continuation) to the Existing Credit Agreement are each hereby amended and restated in its entirety as set forth as Annex B hereto.

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3. Early Opt-in Election. Pursuant to Section 5.8(c) of the Existing Credit Agreement, the Company and the Administrative Agent have made an Early Opt-in Election to replace the LIBOR Rate with Term SOFR solely with respect to Revolving Credit Loans and Swingline Loans. The Early Opt-in Effective Date shall be the Effective Date. On and after the Effective Date, all outstanding Revolving Credit Loans that are LIBOR Rate Loans denominated in Dollars shall continue as LIBOR Rate Loans under the Credit Agreement (and, notwithstanding anything in this Amendment including Annex A hereto to the contrary, subject to the terms and conditions and applicable interest rate terms (including breakage) with respect to LIBOR Rate Loans under the Existing Credit Agreement) solely for the remainder of the Interest Periods applicable thereto immediately prior to the effectiveness of this Amendment; it being understood that such LIBOR Rate Loans and Interest Periods are not being renewed or extended as a result of this Amendment and, upon the expiration or earlier termination of such Interest Periods, such LIBOR Rate Loans shall be (i) repaid or (ii) converted to Base Rate Loans or SOFR Loans (in each case, as defined in the Credit Agreement) as the Borrowers may elect (which election in the case of clause (ii) shall be made in accordance with the notice requirements set forth in Section 5.2 of the Credit Agreement as though the Borrowers were requesting a borrowing to be made on the effective date of such conversion). This Amendment shall constitute notice to the Revolving Credit Lenders of an Early Opt-In Election and each Revolving Credit Lender hereby waives any notice period in connection therewith.

4. Conditions to Effectiveness. The effectiveness of this Amendment is subject to the satisfaction or waiver of the following conditions (the date of such satisfaction or waiver, the “Effective Date”):

(c) Amendment. The Administrative Agent shall have received counterparts of this Amendment executed by the Administrative Agent, the Revolving Credit Lenders, the Issuing Lenders and the Credit Parties.

(d) Certified Resolutions. The Administrative Agent shall have received a certificate of a Responsible Officer of each Credit Party certifying that attached thereto is a true, correct and complete copy of resolutions duly adopted by the board of directors (or other governing body) of such Credit Party authorizing and approving the transactions contemplated hereunder and the execution, delivery and performance of this Amendment, in form and substance reasonably satisfactory to the Administrative Agent.

(e) Payment at Closing. The Borrowers shall have paid or made arrangements to pay contemporaneously with closing (A) to the Administrative Agent, ▇▇▇▇▇ Fargo Securities, LLC and the Lenders the fees as separately agreed among the Administrative Agent, ▇▇▇▇▇ Fargo Securities, LLC, the Lenders and the Borrowers and any other accrued and unpaid fees or commissions due hereunder, including an amendment fee equal to 10.0 basis points of the aggregate amount of Revolving Credit Commitments of each Revolving Credit Lender party hereto on the Effective Date, (B) all fees, charges and disbursements of counsel to the Administrative Agent (directly to such counsel if requested by the Administrative Agent) to the extent accrued and unpaid prior to or on the Effective Date, plus such additional amounts of such fees, charges and disbursements as shall constitute its reasonable estimate of such fees, charges and disbursements incurred or to be incurred by it through the closing proceedings (provided that such estimate shall not thereafter preclude a final settling of accounts between the Borrowers and the Administrative Agent) and (C) to any other Person such amount as may be due thereto in connection with the transactions contemplated hereby, including all taxes, fees and other charges in connection with the execution, delivery, recording, filing and registration of any of the Loan Documents.

Without limiting the generality of the provisions of Section 11.3 of the Credit Agreement, for purposes of determining compliance with the conditions specified in this Section 4 or otherwise, each Lender that has signed this Amendment shall be deemed to have consented to, approved or accepted or to

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be satisfied with, each document or other matter required thereunder to be consented to or approved by or acceptable or satisfactory to a Lender unless the Administrative Agent shall have received written notice from such Lender prior to the proposed Effective Date specifying its objection thereto.

5. Representations and Warranties. Each Credit Party represents and warrants as follows:

(f) Each Credit Party has the right, power, and authority and has taken all necessary corporate or other action to authorize the execution, delivery and performance of this Amendment. This Amendment constitutes a legal, valid and binding obligation of such Credit Party, enforceable against each Credit Party that is party hereto 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.

(g) The execution, delivery and performance by each Credit Party of this Amendment and the transactions contemplated hereby do not and will not, by the passage of time, the giving of notice or otherwise, (i) require any Governmental Approval or violate any Applicable Law relating to any Credit Party or any Subsidiary thereof where the failure to obtain such Governmental Approval or such violation could reasonably be expected to have a Material Adverse Effect, (ii) conflict with, result in a breach of or constitute a default under the articles of incorporation, bylaws or other organizational documents of any Credit Party or any Subsidiary thereof, (iii) conflict with, result in a breach of or constitute a default under any indenture, agreement or other instrument to which such Person is a party or by which any of its properties may be bound or any Governmental Approval relating to such Person, which could, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect, (iv) result in or require the creation or imposition of any Lien upon or with respect to any property now owned or hereafter acquired by such Person other than Permitted Liens or (v) require any consent or authorization of, filing with, or other act in respect of, an arbitrator or Governmental Authority and no consent of any other Person is required in connection with the execution, delivery, performance, validity or enforceability of this Amendment other than consents, authorizations, filings or other acts or consents for which the failure to obtain or make could not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect.

(h) After giving effect to this Amendment, the representations and warranties contained in each of the Loan Documents are true and correct in all material respects, except for any representation and warranty that is qualified by materiality or reference to Material Adverse Effect, which such representation and warranty are true and correct in all respects, on and as of the date hereof as though made on and as of such date (other than any such representations or warranties that, by their terms, refer to a specific date, in which case as of such specific date).

(i) No Default or Event of Default shall exist after giving effect to this Amendment.

6. Limited Effect. Except as expressly provided herein, the Credit Agreement and the other Loan Documents shall remain unmodified and in full force and effect. This Amendment shall not be deemed (a) to be a waiver of, consent to, or a modification or amendment of any other term or condition of the Credit Agreement or any other Loan Document, (b) to prejudice any right or rights which the Administrative Agent or the Lenders may now have or may have in the future under or in connection with the Credit Agreement or the other Loan Documents or any of the instruments or agreements referred to therein, as the same may be amended, restated, supplemented or modified from time to time, (c) to be a commitment or any other undertaking or expression of any willingness to engage in any further discussion with the Credit Parties or any of their respective Subsidiaries or any other Person with respect to any other waiver, amendment, modification or any other change to the Credit Agreement or the Loan Documents or any rights or remedies arising in favor of the Lenders or the Administrative Agent, or any of them, under

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or with respect to any such documents or (d) to be a waiver of, or consent to, or a modification or amendment of, any other term or condition of any other agreement by and among the Credit Parties, on the one hand, and the Administrative Agent or any other Lender, on the other hand. References in the Credit Agreement to “this Agreement” (and indirect references such as “hereunder”, “hereby”, “herein”, “hereof” or other words of like import) and in any other Loan Document to the “Credit Agreement” shall be deemed to be references to the Credit Agreement as modified hereby. Without limiting the generality of the foregoing, the execution and delivery of this Amendment (including the annexes hereto) shall not constitute a novation of any indebtedness or other obligations owing to the Lenders or the Administrative Agent under the Credit Agreement based on facts or events occurring or existing prior to the execution and delivery of this Amendment.

7. Reaffirmation. By its execution hereof, each Credit Party (a) consents to this Amendment and agrees that the transactions contemplated by this Amendment shall not limit or diminish the obligations of such Person, or release such Person from any obligations, under any of the Loan Documents to which it is a party, (b) confirms and reaffirms its obligations under each of the Loan Documents to which it is a party and (c) agrees that each of the Loan Documents to which it is a party remain in full force and effect and are hereby ratified and confirmed.

8. Execution in Counterparts. This Amendment may be executed in counterparts (and by different parties hereto in different counterparts), each of which shall constitute an original, but all of which when taken together shall constitute a single contract. Delivery of an executed counterpart of a signature page of this Amendment by facsimile or in electronic (i.e., “pdf” or “tif”) format shall be effective as delivery of a manually executed counterpart of this Amendment. The execution and delivery of this Amendment shall be deemed to include Electronic Signatures on electronic platforms approved by the Administrative Agent, which shall be of the same legal effect, validity or enforceability as delivery of a manually executed signature, to the extent and as provided for in any applicable law, including the Federal Electronic Signatures in Global and National Commerce Act, the New York State Electronic Signatures and Records Act, or any other similar state laws based on the Uniform Electronic Transactions Act; provided that, upon the request of any party hereto, such Electronic Signature shall be promptly followed by the original thereof

9. Governing Law. THIS AMENDMENT AND ANY CLAIM, CONTROVERSY, DISPUTE OR CAUSE OF ACTION (WHETHER IN CONTRACT OR TORT OR OTHERWISE) BASED UPON, ARISING OUT OF OR RELATING TO THIS AMENDMENT AND THE TRANSACTIONS CONTEMPLATED HEREBY SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.

10. Entire Agreement. This Amendment and the other Loan Documents, and any separate letter agreements with respect to fees payable to the Administrative Agent and/or the Lead Arrangers, constitute the entire agreement among the parties relating to the subject matter hereof and supersede any and all previous agreements and understandings, oral or written, relating to the subject matter hereof.

11. Successors and Assigns. This Amendment shall be binding on and inure to the benefit of the parties and their heirs, beneficiaries, successors and permitted assigns.

[Signature Pages Follow]

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IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed under seal by their duly authorized officers, all as of the day and year first written above.

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

Centuri Group, Inc.

First Amendment to Second Amended and Restated Credit Agreement Signature Page

ANNEX A

Amended Credit Agreement (See attached)

ANNEX B

Amended Exhibits B, D and E (See Attached)

EXECUTION VERSIONEXHIBIT A TO FIRST AMENDMENT

Published CUSIP Number: ▇▇▇▇▇▇▇▇▇ Revolving

Credit CUSIP Number: ▇▇▇▇▇▇▇▇▇ Initial Term Loan

CUSIP Number: ▇▇▇▇▇▇▇▇▇

SECOND AMENDED AND RESTATED CREDIT AGREEMENT

dated as of August 27, 2021

(as amended by the First Amendment to Second Amended and Restated Credit Agreement dated as of November 4, 2022)

by and among

CENTURI GROUP, INC.,

and

each Additional Borrower,

as US Borrowers,

CENTURI CANADA DIVISION INC.,

and

each Additional Borrower,

as Canadian Borrowers, the Lenders referred to herein, as ▇▇▇▇▇▇▇,

▇▇▇▇▇ FARGO BANK, NATIONAL ASSOCIATION,

as Administrative Agent, Swingline Lender and Issuing Lender,

▇▇▇▇▇ FARGO SECURITIES, LLC and BOFA SECURITIES, INC.,

as Joint Lead Arrangers and Joint Bookrunners

BANK OF AMERICA, N.A.,

as Syndication Agent and

CANADIAN IMPERIAL BANK OF COMMERCE, PNC

BANK, NATIONAL ASSOCIATION, TRUIST BANK,

U.S. BANK NATIONAL ASSOCIATION and

BANK OF MONTREAL,

as Documentation Agents

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SECOND AMENDED AND RESTATED CREDIT AGREEMENT, dated as of August 27, 2021, by and among CENTURI GROUP, INC., a Nevada corporation, and each Additional Borrower that becomes a party hereto in accordance with Section 5.17, as US Borrowers, CENTURI CANADA DIVISION INC., a corporation organized under the laws of the Province of Ontario, Canada, and each Additional Borrower that becomes a party hereto in accordance with Section 5.17, as Canadian Borrowers, the lenders who are party to this Agreement and the lenders who may become a party to this Agreement pursuant to the terms hereof, as Lenders, and ▇▇▇▇▇ FARGO BANK, NATIONAL ASSOCIATION, a national banking association, as Administrative Agent for the Lenders.

STATEMENT OF PURPOSE

Certain of the Borrowers, certain financial institutions party thereto (the “Existing Lenders”) and the Administrative Agent are parties to that certain Amended and Restated Credit Agreement dated as of November 7, 2017 (as amended, restated, supplemented or otherwise modified prior to the date hereof, the “Existing Credit Agreement”) pursuant to which the Existing Lenders extended senior credit facilities to certain of the Borrowers.

The Borrowers have requested, and subject to the terms and conditions set forth in this Agreement, the Administrative Agent and the Lenders have agreed, upon the terms and subject to the conditions set forth herein, to amend and restate the Existing Credit Agreement as set forth herein and extend senior credit facilities to the Borrowers as set forth herein.

It is the intent of the parties hereto that this Agreement not constitute a novation of the obligations and liabilities of the parties under the Existing Credit Agreement and that this Agreement amend and restate the Existing Credit Agreement in its entirety.

NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged by the parties hereto, such parties hereby agree as follows:

ARTICLE I DEFINITIONS

SECTION 1.1 Definitions

. The following terms when used in this Agreement shall have the meanings assigned to them below:

“Acceptable Intercreditor Agreement” means an intercreditor agreement, the terms of which are consistent with market terms governing security arrangements for the sharing of liens and/or arrangements relating to the distribution of payments, as applicable, (a) to the extent executed in connection with the incurrence of Indebtedness secured by Collateral intended to rank equal in priority to the Liens on the Collateral securing the Obligations, on a pari passu basis, (b) to the extent executed in connection with the incurrence of Indebtedness secured by Collateral intended to rank junior in priority to the Liens on the Collateral securing the Obligations, on a junior basis, and/or (c) to the extent executed in connection with the incurrence of Indebtedness intended to rank junior in rights to payment to the Obligations, on a junior basis, in each case at the time such intercreditor agreement is proposed to be established, as determined by the Administrative Agent and the Borrower in the exercise of reasonable judgment, among the Administrative Agent and one or more representatives for the holders of any such Indebtedness.

“Acquisition” means any transaction, or any series of related transactions, consummated on or after the date of this Agreement, by which any Consolidated Company (a) acquires any going business or all or substantially all of the assets of any firm, corporation or limited liability company, or division thereof, whether through purchase of assets, merger, amalgamation or otherwise or (b) directly or indirectly acquires (in one transaction or as the most recent transaction in a series of transactions) at least a majority (in number of votes) of the securities of a corporation which have ordinary voting power for the election of directors (other than securities having such power only by reason of the happening of a contingency) or a majority (by percentage or voting power) of the outstanding ownership interests of a partnership or limited liability company.

“Additional Borrower” means certain Wholly-Owned US Subsidiaries and Wholly-Owned Canadian Subsidiaries of Centuri from time to time accepted as a Borrower to be party hereto pursuant to Section 5.17.

“Additional Borrower Notice” has the meaning set forth in Section 5.17.

“Additional Borrower Request and Assumption Agreement” has the meaning set forth in Section 5.17.

“Adjusted Consolidated Net Income” means Consolidated Net Income for the applicable period, but excluding in calculating Consolidated Net Income (solely to the extent Consolidated Net Income for such period is greater than $0) the following items accrued for the applicable period of the calculation, (a) amortization of goodwill, (b) impairment charges with respect to goodwill and other intangible assets, (c) non-cash charges related to deferred taxes and valuation allowances on deferred tax assets and (d) non-amortized fees related to Indebtedness that are written off.

“Adjusted Term SOFR” means, for purposes of any calculation, the rate per annum equal to (a) Term SOFR for such calculation plus (b) the Term SOFR Adjustment; provided that if Adjusted Term SOFR as so determined shall ever be less than the Floor, then Adjusted Term SOFR shall be deemed to be the Floor.

“Administrative Agent” means ▇▇▇▇▇ Fargo, in its capacity as Administrative Agent ▇▇▇▇▇▇▇▇▇, and any successor thereto appointed pursuant to Section 11.6.

“Administrative Agent’s Office” means the office of the Administrative Agent specified in or determined in accordance with the provisions of Section 12.1(c).

“Administrative Questionnaire” means an administrative questionnaire in a form supplied by the Administrative Agent.

“Affected Financial Institution” means (a) any EEA Financial Institution or (b) any UK Financial Institution.

“Affiliate” means, with respect to a specified Person, another Person that directly, or indirectly through one or more intermediaries, Controls or is Controlled by or is under common Control with the Person specified.

“Agents” means, collectively, the Administrative Agent, the Arrangers and the syndication agent and the documentation agents listed on the cover page hereto.

“Agent Parties” has the meaning assigned thereto in Section 12.1(e).

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“Agreement” means this Credit Agreement, as amended, restated, supplemented or otherwise modified from time to time.

“All-In Yield” means, as to any Indebtedness, the effective all-in yield applicable thereto as reasonably determined by the Administrative Agent in consultation with the Borrowers in a manner consistent with generally accepted financial practices, taking into account: (a) interest rate margins, (b) original issue discount (“OID”) and upfront or similar fees (which shall be deemed to constitute like amounts of OID) payable by the Borrowers or any of their respective Subsidiaries or Affiliates to the lenders under, or holders of, such Indebtedness in the initial primary syndication thereof (with OID and upfront fees being equated to interest based on assumed four-year life to maturity (or, if less, the stated Weighted Average Life to Maturity at the time of its incurrence of the applicable Indebtedness)), and (c) any interest rate floor, but excluding (i) any arrangement, commitment, structuring, agency or underwriting fees that are not paid to or shared with all relevant lenders generally in connection with the commitment or syndication of such Indebtedness, (ii) any ticking, unused line or similar fees or (iii) any other fee that is not paid directly by the Borrowers generally to all relevant lenders ratably in the primary syndication of such Indebtedness; provided that (A) to the extent that any interest rate specified for such Indebtedness that is subject to a floor (in each case, without giving effect to any such floor on the date on which the All-In Yield is being calculated) is less than such floor, the amount of such difference will be deemed added to the interest rate margin applicable to such Indebtedness for purposes of calculating the All-In Yield and (B) to the extent that any interest rate specified for such Indebtedness that is subject to a floor (in each case, without giving effect to any such floor on the date on which the All-In Yield is being calculated) is equal to or greater than such floor, the floor will be disregarded in calculating the All-In Yield.

“Anti-Corruption Laws” means all laws, rules, and regulations of any jurisdiction applicable to the Borrowers or their respective Subsidiaries from time to time concerning or relating to bribery or corruption, including, without limitation, the United States Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder.

“Anti-Money Laundering Laws” means any and all laws, statutes, regulations or obligatory government decrees, orders, ordinances or rules applicable to the Borrowers or their respective Subsidiaries or Affiliates related to terrorism financing or money laundering including any applicable provision of the PATRIOT Act and The Currency and Foreign Transactions Reporting Act (also known as the “Bank Secrecy Act,” 31 U.S.C. §§ 5311-5330 and 12 U.S.C. §§ 1818(s), 1820(b) and 1951-1959).

“Applicable Designee” means any office, branch or Affiliate of a Lender designated thereby from time to time by written notice to the Administrative Agent and Centuri to fund all or any portion of such Lender’s Canadian Revolving Credit Loans and, to the extent applicable, any Incremental Term Loan made to any Canadian Borrower under this Agreement. Notwithstanding the designation by any Lender of an Applicable Designee, the Borrowers and the Administrative Agent shall be permitted to deal solely and directly with such Lender in connection with such Lender’s rights and obligations under this Agreement, and no such designation shall relieve any such Lender of its obligations hereunder.

“Applicable Law” means all applicable provisions of constitutions, laws, statutes, ordinances, rules, treaties, regulations, permits, licenses, approvals, interpretations and orders of courts or Governmental Authorities and all orders and decrees of all courts and arbitrators.

“Applicable Margin” means:

(a) with respect to the Initial Term Loans, (i) for LIBOR Rate Loans, 2.50% per annum and (ii) for Base Rate Loans, 1.50% per annum; and

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(b) with respect to the Revolving Credit Facility, the corresponding percentages per annum as set forth below based on the Consolidated Net Leverage Ratio:

The Applicable Margin shall be determined and adjusted quarterly on the date five (5) Business Days after the day on which Centuri provides an Officer’s Compliance Certificate pursuant to Section 8.2(a) for the most recently ended fiscal quarter of Centuri (each such date, a “Calculation Date”); provided that (a) the Applicable Margin shall be based on the Pricing Level VIVII until the first Calculation Date occurring in connection with the first full fiscal quarter to end after the ClosingFirst Amendment Effective Date and, thereafter the Pricing Level shall be determined by reference to the Consolidated Net Leverage Ratio as of the last day of the most recently ended fiscal quarter of Centuri preceding the applicable Calculation Date, and (b) if Centuri fails to provide an Officer’s Compliance Certificate when due as required by Section 8.2(a) or (b) for the most recently ended fiscal quarter of Centuri preceding the applicable Calculation Date, the Applicable Margin from the date on which such Officer’s Compliance Certificate was required to have been delivered shall be based on Pricing Level VIVII until such time as such Officer’s Compliance Certificate is delivered, at which time the Pricing Level shall be determined by reference to the Consolidated Net Leverage Ratio as of the last day of the most recently ended fiscal quarter of Centuri preceding such Calculation Date. The applicable Pricing Level shall be effective from one Calculation Date until the next Calculation Date. Any adjustment in the Pricing Level shall be applicable to all Extensions of Credit then existing or subsequently made or issued.

Notwithstanding the foregoing, in the event that any financial statement or Officer’s Compliance Certificate delivered pursuant to Section 8.1 or 8.2 is shown to be inaccurate (regardless of whether (i) this Agreement is in effect, (ii) any Commitments are in effect, or (iii) any Extension of Credit is outstanding when such inaccuracy is discovered or such financial statement or Officer’s Compliance Certificate was delivered), and such inaccuracy, if corrected, would have led to the application of a higher Applicable Margin for any period (an “Applicable Period”) than the Applicable Margin applied for such Applicable Period, then (A) Centuri shall immediately deliver to the Administrative Agent a corrected Officer’s Compliance Certificate for such Applicable Period, (B) the Applicable Margin for such Applicable Period shall be determined as if the Consolidated Net Leverage Ratio in the corrected Officer’s Compliance Certificate were applicable for such Applicable Period, and (C) the Borrowers shall immediately and retroactively be obligated to pay to the Administrative Agent the accrued additional interest and fees owing as a result of such increased Applicable Margin for such Applicable Period, which payment shall be promptly applied by the Administrative Agent in accordance with Section 5.4. Nothing in this paragraph shall limit the rights of

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the Administrative Agent and Lenders with respect to Sections 5.1(b) and 10.2 nor any of their other rights under this Agreement or any other Loan Document. The Borrowers’ obligations under this paragraph shall survive the termination of the Commitments and the repayment of all other Obligations hereunder.

“Applicant Borrower” has the meaning given such term in Section 5.17.

“Approved Fund” means any Fund that is administered or managed by (a) a Lender, (b) an Affiliate of a Lender or (c) an entity or an Affiliate of an entity that administers or manages a Lender.

“Arrangers” means ▇▇▇▇▇ Fargo Securities, LLC and BofA Securities, Inc., in their respective capacities as joint lead arrangers and joint bookrunners.

“Asset Disposition” means the disposition of any Property (including, without limitation, any Equity Interests owned thereby) by any Credit Party or any Subsidiary thereof, whether by sale, lease, transfer, statutory division or otherwise, and any issuance of Equity Interests by any Subsidiary of any Credit Party to any Person that is not a Credit Party or any Subsidiary thereof.

“Assignment and Assumption” means an assignment and assumption entered into by a Lender and an Eligible Assignee (with the consent of any party whose consent is required by Section 12.9), and accepted by the Administrative Agent, in substantially the form attached as Exhibit G or any other form approved by the Administrative Agent.

“Attributable Indebtedness” means, on any date of determination, (a) in respect of any Capital Lease Obligation of any Person, the capitalized amount thereof that would appear on a balance sheet of such Person prepared as of such date in accordance with GAAP, (b) in respect of any Synthetic Lease, the capitalized amount or principal amount of the remaining lease payments under the relevant lease that would appear on a balance sheet of such Person prepared as of such date in accordance with GAAP if such lease were accounted for as a Capital Lease Obligation and (c) in respect of any Permitted Receivables Transaction, the aggregate cash amount paid by the lenders and/or purchasers under such Permitted Receivables Transaction in connection with their purchase of, or the making of loans secured by, Receivables Assets or interests therein, as the same may be reduced from time to time by collections with respect to such Receivables Assets or otherwise in accordance with the terms of the Permitted Receivables Transaction Documents since the Closing Date.

“Available Amount” means, on any date of determination, an amount equal to:

(a) an amount, not less than zero, equal to 50% of Adjusted Consolidated Net Income for the period (taken as one accounting period) from the fiscal quarter following September 30, 2020 to the end of the fiscal quarter most recently ended in respect of which an Officer’s Compliance Certificate has been delivered as required hereunder (or, in the case such Adjusted Consolidated Net Income shall be a negative number, 100% of such negative number); plus

(b) the net cash proceeds received by Centuri after the Closing Date as a result of any issuance of Qualified Equity Interests of Centuri to Southwest Gas and cash contributions received by Centuri from Southwest Gas as a capital contribution as common Equity Interests, in each case, during the period from the Closing Date through and including such date, other than the proceeds of issuances of Qualified Equity Interests or capital contributions to the extent specifically and contemporaneously utilized in connection with other transactions permitted pursuant to this Agreement (including the Drum Acquisition, but excluding any Investments made pursuant to Section 9.3(i) that are deducted pursuant to clause (d) below); plus

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(c) the net cash proceeds received by Centuri or any Subsidiary during the period from the Closing Date through and including such date in connection with (i) cash returns, cash profits, cash distributions and similar cash amounts, including cash principal repayments of loans, in each case received in respect of any Investment originally made using the Available Amount after the Closing Date and (ii) sales of Investments that were originally made using the Available Amount (in each case, in an amount not to exceed the original amount of such Investment); minus

(d) the amount of payments made by Centuri or any of its Subsidiaries after the Closing Date to acquire the remaining Equity Interests of Linetec pursuant to Section 9.3(i); minus

(e) the aggregate amount of all usage of the Available Amount pursuant to Sections 9.3(j), 9.6(d) and 9.9(c) on and after the Closing Date through and including the date of determination.

“Available Tenor” means, as of any date of determination and with respect to the then-current Benchmark, as applicable, (a) if the then-current Benchmark is a term rate, any tenor for such Benchmark or (b) otherwise, any payment period for interest calculated with reference to such Benchmark, as applicable, that is or may be used for determining the length of an Interest Period pursuant to this Agreement as of such date and not including, for the avoidance of doubt, any tenor for such Benchmark that is then- removed from the definition of “Interest Period” pursuant to Section 5.8(c)(iv).

“Bail-In Action” means the exercise of any Write-Down and Conversion Powers by the applicable Resolution Authority in respect of any liability of an Affected Financial Institution.

“Bail-In Legislation” means (a) with respect to any EEA Member Country implementing Article 55 of Directive 2014/59/EU of the European Parliament and of the Council of the European Union, the implementing law, regulation, rule or requirement for such EEA Member Country from time to time which is described in the EU Bail-In Legislation Schedule and (b) with respect to the United Kingdom, Part I of the United Kingdom Banking Act 2009 (as amended from time to time) and any other law, regulation or rule applicable in the United Kingdom relating to the resolution of unsound or failing banks, investment firms or other financial institutions or their affiliates (other than through liquidation, administration or other insolvency proceedings).

“Base Rate” means, at any time, the highest of (a) the Prime Rate, (b) the Federal Funds Rate plus 0.50% and (c)(i) in the case of the Initial Term Loans, the LIBOR Rate for an Interest Period of one month plus 1% and (ii) in the case of any other Loans, Adjusted Term SOFR for an Interest Period of one month plus 1%; each change in the Base Rate shall take effect simultaneously with the corresponding change or changes in the Prime Rate, the Federal Funds Rate or, the LIBOR Rate or Adjusted Term SOFR.

“Base Rate Loan” means any Loan bearing interest at a rate based upon the Base Rate as provided in Section 5.1(a).

“Benchmark” means either a Benchmark (LIBOR) or a Benchmark (Non-LIBOR), as the context so requires.

“Benchmark (LIBOR)” means, initially, USD LIBOR; provided that if a Benchmark Transition Event (LIBOR), a Term SOFR Transition Event or an Early Opt-in Election, as applicable, and its related Benchmark Replacement Date (LIBOR) have occurred with respect to USD LIBOR or the then-current Benchmark, then “Benchmark” means the applicable Benchmark Replacement to the extent that such Benchmark Replacement has replaced such prior benchmark rate pursuant to Section 5.8(c)(i).

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“Benchmark (Non-LIBOR)” means, initially, the Term SOFR Reference Rate; provided that if a Benchmark Transition Event (Non-LIBOR) has occurred with respect to the Term SOFR Reference Rate or the then-current Benchmark, then “Benchmark” means the applicable Benchmark Replacement to the extent that such Benchmark Replacement has replaced such prior benchmark rate pursuant to Section 5.8(c)(i).

“Benchmark Replacement” means either a Benchmark Replacement (LIBOR) or a Benchmark Replacement (Non-LIBOR), as the context so requires.

“Benchmark Replacement (LIBOR)” means, for any Available Tenor,

(a) with respect to any Benchmark Transition Event (LIBOR) or Early Opt-in Election, the first alternative set forth in the order below that can be determined by the Administrative Agent for the applicable Benchmark Replacement Date (LIBOR):

(1) the sum of: (A) Term SOFR and (B) the related Benchmark Replacement Adjustment (LIBOR); provided, that, if Centuri has provided a notification to the Administrative Agent in writing on or prior to such Benchmark Replacement Date (LIBOR) that a Borrower has a Hedge Agreement in place with respect to any of the Loans as of the date of such notice (which such notification the Administrative Agent shall be entitled to rely upon and shall have no duty or obligation to ascertain the correctness or completeness of), then the Administrative Agent, in its sole discretion, may decide not to determine the Benchmark Replacement (LIBOR) pursuant to this clause (a)(1) for such Benchmark Transition Event (LIBOR) or Early Opt-in Election, as applicable;

(2) the sum of: (A) Daily Simple SOFR and (B) the related Benchmark Replacement Adjustment (LIBOR);

(3) the sum of: (A) the alternate benchmark rate that has been selected by the Administrative Agent and Centuri as the replacement for the then-current Benchmark for the applicable Corresponding Tenor giving due consideration to (i) any selection or recommendation of a replacement benchmark rate or the mechanism for determining such a rate by the Relevant Governmental Body or (ii) any evolving or then-prevailing market convention for determining a benchmark rate as a replacement for the then-current Benchmark for Dollar-denominated syndicated credit facilities at such time and (B) the related Benchmark Replacement Adjustment (LIBOR); or

(b) with respect to any Term SOFR Transition Event, the sum of (i) Term SOFR and (ii) the related Benchmark Replacement Adjustment (LIBOR);

provided that, (i) in the case of clause (a)(1), if the Administrative Agent decides that Term SOFR is not administratively feasible for the Administrative Agent, then Term SOFR will be deemed unable to be determined for purposes of this definition and (ii) in the case of clause (a)(1) or clause (b) of this definition, the applicable Unadjusted Benchmark Replacement is displayed on a screen or other information service that publishes such rate from time to time as selected by the Administrative Agent in its reasonable discretion and made in a manner substantially consistent with determinations being made for similarly situated customers of such Administrative Agent under agreements having similar provisions. If the Benchmark Replacement (LIBOR) as determined pursuant to clause (a)(1), (a)(2) or (a)(3) or clause (b) of this definition would be less than the Floor, the Benchmark Replacement (LIBOR) will be deemed to be the Floor for the purposes of this Agreement and the other Loan Documents.

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“Benchmark Replacement Adjustment(Non-LIBOR)” means, with respect to any Benchmark Transition Event (Non-LIBOR) with respect to any Benchmark (other than LIBOR), the sum of: (a) the alternate benchmark rate that has been selected by the Administrative Agent and Centuri giving due consideration to (i) any selection or recommendation of a replacement benchmark rate or the mechanism for determining such a rate by the Relevant Governmental Body or (ii) any evolving or then-prevailing market convention for determining a benchmark rate as a replacement to the then-current Benchmark for Dollar-denominated syndicated credit facilities and (b) the related Benchmark Replacement Adjustment (Non-LIBOR); provided that, if such Benchmark Replacement (Non-LIBOR) as so determined would be less than the Floor, such Benchmark Replacement (Non-LIBOR) will be deemed to be the Floor for the purposes of this Agreement and the other Loan Documents.

“Benchmark Replacement Adjustment (LIBOR)” means, with respect to any replacement of the then-current Benchmark with an Unadjusted Benchmark Replacement for any applicable Interest Period and Available Tenor for any setting of such Unadjusted Benchmark Replacement:

(4) for purposes of clauses (a)(1) and (b) of the definition of “Benchmark Replacement (LIBOR),” an amount equal to (A) 0.11448% (11.448 basis points) for an Available Tenor of one-month’s duration, (B) 0.26161% (26.161 basis points) for an Available Tenor of three-months’ duration and (C) 0.42826% (42.826 basis points) for an Available Tenor of six-months’ duration;

(5) for purposes of clause (a)(2) of the definition of “Benchmark Replacement (LIBOR),” an amount equal to 0.11448% (11.448 basis points); and

(6) for purposes of clause (a)(3) of the definition of “Benchmark Replacement (LIBOR),” the spread adjustment, or method for calculating or determining such spread adjustment, (which may be a positive or negative value or zero) that has been selected by the Administrative Agent and Centuri giving due consideration to (i) any selection or recommendation of a spread adjustment, or method for calculating or determining such spread adjustment, for the replacement of such Available Tenor of such Benchmark with the applicable Unadjusted Benchmark Replacement by the Relevant Governmental Body on the applicable Benchmark Replacement Date (LIBOR) or (ii) any evolving or then-prevailing market convention for determining a spread adjustment, or method for calculating or determining such spread adjustment, for the replacement of such Available Tenor of such Benchmark with the applicable Unadjusted Benchmark Replacement for Dollar-denominated syndicated credit facilities.

“Benchmark Replacement Adjustment (Non-LIBOR)” means, with respect to any replacement of the then-current Benchmark (other than LIBOR) with an Unadjusted Benchmark Replacement for any applicable Available Tenor, the spread adjustment, or method for calculating or determining such spread adjustment, (which may be a positive or negative value or zero) that has been selected by the Administrative Agent and Centuri giving due consideration to (a) any selection or recommendation of a spread adjustment, or method for calculating or determining such spread adjustment, for the replacement of such Benchmark with the applicable Unadjusted Benchmark Replacement by the Relevant Governmental Body or (b) any evolving or then-prevailing market convention for determining a spread adjustment, or method for calculating or determining such spread adjustment, for the replacement of such Benchmark with the applicable Unadjusted Benchmark Replacement for Dollar-denominated syndicated credit facilities.

“Benchmark Replacement Conforming Changes” means,

(a) with respect to any Benchmark Replacement (LIBOR), any technical, administrative or operational changes (including changes to the definition of “Base Rate,” the definition of “Business Day,”

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the definition of “Interest Period,” timing and frequency of determining rates and making payments of interest, timing of borrowing requests or prepayment, conversion or continuation notices, length of lookback periods, the applicability of breakage provisions, and other technical, administrative or operational matters) that the Administrative Agent (in consultation with Centuri) decides may be appropriate to reflect the adoption and implementation of such Benchmark Replacement (LIBOR) and to permit the administration thereof by the Administrative Agent in a manner substantially consistent with market practice (or, if the Administrative Agent decides that adoption of any portion of such market practice is not administratively feasible or if the Administrative Agent determines that no market practice for the administration of such Benchmark Replacement (LIBOR) exists, in such other manner of administration as the Administrative Agent decides (in consultation with Centuri) is reasonably necessary in connection with the administration of this Agreement and the other Loan Documents); and

(a) with respect to either the use or administration of Term SOFR or the use, administration, adoption or implementation of any Benchmark Replacement (Non-LIBOR), any technical, administrative or operational changes (including changes to the definition of “Base Rate,” the definition of “Business Day,” the definition of “US Government Securities Business Day,” the definition of “Interest Period” or any similar or analogous definition (or the addition of a concept of “interest period”), timing and frequency of determining rates and making payments of interest, timing of borrowing requests or prepayment, conversion or continuation notices, the applicability and length of lookback periods, the applicability of Section 5.9 and other technical, administrative or operational matters) that the Administrative Agent (in consultation with Centuri) decides may be appropriate to reflect the adoption and implementation of any such rate or to permit the use and administration thereof by the Administrative Agent in a manner substantially consistent with market practice (or, if the Administrative Agent reasonably decides that adoption of any portion of such market practice is not administratively feasible or if the Administrative Agent reasonably determines that no market practice for the administration of any such rate exists, in such other manner of administration as the Administrative Agent decides (in consultation with Centuri) is reasonably necessary in connection with the administration of this Agreement and the other Loan Documents).

“Benchmark Replacement Date (LIBOR)” means the earliest to occur of the following events with respect to the then-current Benchmark:

(a) in the case of clause (a) or (b) of the definition of “Benchmark Transition Event (LIBOR),” the later of (i) the date of the public statement or publication of information referenced therein and (ii) the date on which the administrator of such Benchmark (or the published component used in the calculation thereof) permanently or indefinitely ceases to provide all Available Tenors of such Benchmark (or such component thereof);

(b) in the case of clause (c) of the definition of “Benchmark Transition Event (LIBOR),” the date of the public statement or publication of information referenced therein;

(c) in the case of a Term SOFR Transition Event, the date that is thirty (30) days after the Administrative Agent has provided the Term SOFR Notice to the Lenders and Centuri pursuant to Section 5.8(c)(i)(BC); or

(d) in the case of an Early Opt-in Election, the sixth (6th) Business Day after the date notice of such Early Opt-in Election is provided to the Lenders and Centuri, so long as the Administrative Agent has not received, by 5:00 p.m. (New York City time) on the fifth (5th) Business Day after the date notice of such Early Opt-in Election is provided to the Lenders, written notice of objection to such Early Opt-in Election from Lenders comprising the Required Lenders.

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For the avoidance of doubt, (i) if the event giving rise to the Benchmark Replacement Date (LIBOR) occurs on the same day as, but earlier than, the Reference Time in respect of any determination, the Benchmark Replacement Date (LIBOR) will be deemed to have occurred prior to the Reference Time for such determination and (ii) the “Benchmark Replacement Date (LIBOR)” will be deemed to have occurred in the case of clause (a) or (b) with respect to any Benchmark upon the occurrence of the applicable event or events set forth therein with respect to all then-current Available Tenors of such Benchmark (or the published component used in the calculation thereof).

“Benchmark Replacement Date (Non-LIBOR)” means the earliest to occur of the following events with respect to the then-current Benchmark:

(a) in the case of clause (a) or (b) of the definition of “Benchmark Transition Event (Non- LIBOR),” the later of (i) the date of the public statement or publication of information referenced therein and (ii) the date on which the administrator of such Benchmark (or the published component used in the calculation thereof) permanently or indefinitely as of a specific date ceases to provide all Available Tenors of such Benchmark (or such component thereof); or

(b) in the case of clause (c) of the definition of “Benchmark Transition Event (Non-LIBOR),” the first date on which such Benchmark (or the published component used in the calculation thereof) has been determined and announced by the regulatory supervisor for the administrator of such Benchmark (or such component thereof) to be non-representative; provided that such non-representativeness will be determined by reference to the most recent statement or publication referenced in such clause (c) and even if any Available Tenor of such Benchmark (or such component thereof) continues to be provided on such date.

For the avoidance of doubt, the “Benchmark Replacement Date (Non-LIBOR)” will be deemed to have occurred in the case of clause (a) or (b) with respect to any Benchmark upon the occurrence of the applicable event or events set forth therein with respect to all then-current Available Tenors of such Benchmark (or the published component used in the calculation thereof).

“Benchmark Transition Event (LIBOR)” means the occurrence of one or more of the following events with respect to the then-current Benchmark:

(a) a public statement or publication of information by or on behalf of the administrator of such Benchmark (or the published component used in the calculation thereof) announcing that such administrator has ceased or will cease to provide all Available Tenors of such Benchmark (or such component thereof), permanently or indefinitely as of a specific date, provided that, at the time of such statement or publication, there is no successor administrator that will continue to provide any Available Tenor of such Benchmark (or such component thereof);

(b) a public statement or publication of information by the regulatory supervisor for the administrator of such Benchmark (or the published component used in the calculation thereof), the FRB, the Federal Reserve Bank of New York, an insolvency official with jurisdiction over the administrator for such Benchmark (or such component), a resolution authority with jurisdiction over the administrator for such Benchmark (or such component) or a court or an entity with similar insolvency or resolution authority over the administrator for such Benchmark (or such component), which states that the administrator of such Benchmark (or such component) has ceased or will cease to provide all Available Tenors of such Benchmark (or such component thereof) permanently or indefinitely as of a specific date, provided that, at the time of such statement or publication, there is no successor administrator that will continue to provide any Available Tenor of such Benchmark (or such component thereof); or

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(c) a public statement or publication of information by the regulatory supervisor for the administrator of such Benchmark (or the published component used in the calculation thereof) announcing that all Available Tenors of such Benchmark (or such component thereof) are no longer representative.

For the avoidance of doubt, a “Benchmark Transition Event (LIBOR)” will be deemed to have occurred with respect to any Benchmark if a public statement or publication of information set forth above has occurred with respect to each then-current Available Tenor of such Benchmark (or the published component used in the calculation thereof).

“Benchmark Transition Event (Non-LIBOR)” means the occurrence of one or more of the following events with respect to the then-current Benchmark:

(a) a public statement or publication of information by or on behalf of the administrator of such Benchmark (or the published component used in the calculation thereof) announcing that such administrator has ceased or will cease to provide all Available Tenors of such Benchmark (or such component thereof), permanently or indefinitely as of a specific date; provided that, at the time of such statement or publication, there is no successor administrator that will continue to provide any Available Tenor of such Benchmark (or such component thereof);

(b) a public statement or publication of information by the regulatory supervisor for the administrator of such Benchmark (or the published component used in the calculation thereof), the FRB, the Federal Reserve Bank of New York, an insolvency official with jurisdiction over the administrator for such Benchmark (or such component), a resolution authority with jurisdiction over the administrator for such Benchmark (or such component) or a court or an entity with similar insolvency or resolution authority over the administrator for such Benchmark (or such component), which states that the administrator of such Benchmark (or such component) has ceased or will cease to provide all Available Tenors of such Benchmark (or such component thereof) permanently or indefinitely as of a specific date; provided that, at the time of such statement or publication, there is no successor administrator that will continue to provide any Available Tenor of such Benchmark (or such component thereof); or

(c) a public statement or publication of information by the regulatory supervisor for the administrator of such Benchmark (or the published component used in the calculation thereof) announcing that all Available Tenors of such Benchmark (or such component thereof) are not, or as of a specified future date will not be, representative.

For the avoidance of doubt, a “Benchmark Transition Event (Non-LIBOR)” will be deemed to have occurred with respect to any Benchmark if a public statement or publication of information set forth above has occurred with respect to each then-current Available Tenor of such Benchmark (or the published component used in the calculation thereof).

“Benchmark Transition Start Date” means, in the case of a Benchmark Transition Event (Non- LIBOR), the earlier of (a) the applicable Benchmark Replacement Date (Non-LIBOR) and (b) if such Benchmark Transition Event (Non-LIBOR) is a public statement or publication of information of a prospective event, the 90th day prior to the expected date of such event as of such public statement or publication of information (or if the expected date of such prospective event is fewer than 90 days after such statement or publication, the date of such statement or publication).

“Benchmark Unavailability Period” means either a Benchmark Unavailability Period (LIBOR) or a Benchmark Unavailability Period (Non-LIBOR), as the context so requires.

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“Benchmark Unavailability Period (LIBOR)” means the period (if any) (x) beginning at the time that a Benchmark Replacement Date (LIBOR) pursuant to clauses (a) or (b) of that definition has occurred if, at such time, no Benchmark Replacement has replaced the then-current Benchmark for all purposes hereunder and under any Loan Document in accordance with Section 5.8(c) and (y) ending at the time that a Benchmark Replacement has replaced the then-current Benchmark for all purposes hereunder and under any Loan Document in accordance with Section 5.8(c).

“Benchmark Unavailability Period (Non-LIBOR)” means the period (if any) (x) beginning at the time that a Benchmark Replacement Date (Non-LIBOR) has occurred if, at such time, no Benchmark Replacement has replaced the then-current Benchmark for all purposes hereunder and under any Loan Document in accordance with Section 5.8(c)(i) and (y) ending at the time that a Benchmark Replacement has replaced the then-current Benchmark for all purposes hereunder and under any Loan Document in accordance with Section 5.8(c)(i).

“Beneficial Ownership Certification” means any certification regarding beneficial ownership as required by the Beneficial Ownership Regulation.

“Beneficial Ownership Regulation” means 31 CFR § 1010.230.

“Benefit Plan” means any of (a) an “employee benefit plan” (as defined in ERISA) that is subject to Title I of ERISA, (b) a “plan” as defined in and subject to Section 4975 of the Code or (c) any Person whose assets include (for purposes of ERISA Section 3(42) or otherwise for purposes of Title I of ERISA or Section 4975 of the Code) the assets of any such “employee benefit plan” or “plan”.

“Borrower Materials” has the meaning assigned thereto in Section 8.2.

“Borrowers” means, collectively, the US Borrowers and the Canadian Borrowers.

“Business Day” means:

(a) for all purposes other than as set forth in clause (b) below, any day (other than a Saturday, Sunday or legal holiday) on which banks in Charlotte, North Carolina and New York, New York, are open for the conduct of their commercial banking business;

(b) (i) with respect to all notices and determinations in connection with, and payments of principal and interest on, any LIBOR Rate Loan, or any Base Rate Loan as to which the interest rate is determined by reference to LIBOR, any day that is a Business Day described in clause (a) and that is also a London Banking Day and (ii) with respect to all notices and determinations in connection with, and payments of principal and interest on, any SOFR Loan, or any Base Rate Loan as to which the interest rate is determined by reference to Adjusted Term SOFR, any day that is a Business Day described in clause (a) and that is also a day on which the Federal Reserve Bank of New York is open; and

(c) with respect to all notices and determinations in connection with, and payments of principal and interest on, any Canadian Revolving Credit Loan, any day that is a Business Day described in clause

(a) and on which banks are open for business in London, England and Toronto, Canada. “Calculation Date” has the meaning assigned thereto in the definition of Applicable Margin.

“Canadian AML Laws” means the Proceeds of Crime (Money Laundering) and Terrorist Financing Act (Canada), as amended, and any other applicable anti-money laundering, anti-terrorist financing, government sanction and “know your client” laws in effect in Canada from time to time.

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“Canadian Base Rate” means at any time, the greater of (a) the Canadian Prime Rate and (b) except during any period of time during which a notice delivered to Centuri under Section 5.8 shall remain in effect, the annual rate of interest equal to the sum of (i) the CDOR Rate for an Interest Period of one month at such time plus (ii) one percent (1%) per annum; each change in the Canadian Base Rate shall take effect simultaneously with the corresponding change or changes in the Canadian Prime Rate or the CDOR Rate, as applicable.

“Canadian Base Rate Loan” means any Canadian Loan bearing interest at a rate based upon the Canadian Base Rate as provided in Section 5.1(a).

“Canadian Borrowers” means, collectively, Centuri Canada and each Additional Borrower approved by the Lenders that becomes a party hereto as a Canadian Borrower.

“Canadian Cash Management Bank” means any Person that, (a) at the time it enters into a Cash Management Agreement with a Canadian Credit Party or a Foreign Subsidiary, is a Lender, an Affiliate of a Lender, the Administrative Agent or an Affiliate of the Administrative Agent, or (b) at the time it (or its Affiliate) becomes a Lender (including on the Closing Date), is a party to a Cash Management Agreement with a Canadian Credit Party or a Foreign Subsidiary, in each case in its capacity as a party to such Cash Management Agreement.

“Canadian Collateral Agreement” means that certain Second Amended and Restated Canadian Collateral Agreement of even date herewith executed by the Canadian Credit Parties in favor of the Administrative Agent, for the ratable benefit of the Canadian Secured Parties.

“Canadian Credit Parties” means, collectively, the Canadian Borrowers and the Canadian Subsidiary Guarantors.

“Canadian Credit Party Guarantee Agreement” means that certain ▇▇▇▇▇▇▇ and Restated Canadian Credit Party Guarantee Agreement dated as of the date hereof executed by the Canadian Credit Parties in favor of the Administrative Agent, for the ratable benefit of the Canadian Secured Parties.

“Canadian Dollar” or “C$” means, at the time of determination, the lawful currency of Canada.

“Canadian Employee Benefit Plan” means any Canadian Pension Plan or Canadian Multiemployer Plan.

“Canadian Hedge Bank” means any Person that, (a) at the time it enters into a Hedge Agreement with a Canadian Credit Party or a Foreign Subsidiary permitted under Article IX, is a Lender, an Affiliate of a Lender, the Administrative Agent or an Affiliate of the Administrative Agent or (b) at the time it (or its Affiliate) becomes a Lender (including on the Closing Date), is a party to a Hedge Agreement with a Canadian Credit Party or a Foreign Subsidiary, in each case in its capacity as a party to such Hedge Agreement.

“Canadian L/C Obligations” means at any time, an amount equal to the sum of (a) the aggregate undrawn and unexpired amount of the then outstanding Canadian Letters of Credit and (b) the aggregate amount of drawings under Canadian Letters of Credit which have not then been reimbursed pursuant to Section 3.5.

“Canadian Letters of Credit” means the collective reference to letters of credit denominated in Canadian Dollars pursuant to Section 3.1 (including any applicable Existing Letters of Credit). Notwithstanding anything to the contrary contained herein, a letter of credit issued by any ▇▇▇▇▇▇▇ ▇▇▇▇▇▇

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(other than ▇▇▇▇▇ Fargo at any time it is also acting as Administrative Agent) shall not be a “Canadian Letter of Credit” for purposes of the Loan Documents until such time as the Administrative Agent has been notified in writing of the issuance thereof by the applicable Issuing Lender.

“Canadian Multiemployer Plan” means a “multi-employer pension plan” as defined by Canadian Pension Laws and registered in accordance with Canadian Pension Laws and as to which any Credit Party or any Subsidiary thereof is making, or is accruing an obligation to make, or has accrued an obligation to make contributions within the preceding six (6) years, and shall not include any Multiemployer Plan.

“Canadian Obligations” means, in each case, whether now in existence or hereafter arising: (a) the principal of and interest on (including interest accruing after the filing of any bankruptcy or similar petition) the Canadian Revolving Credit Loans, Canadian Swingline Loans and, to the extent applicable, any Incremental Term Loan made to the Canadian Borrowers, (b) the Canadian L/C Obligations and (c) all other fees and commissions (including attorneys’ fees), charges, indebtedness, loans, liabilities, financial accommodations, obligations, covenants and duties owing by the Canadian Credit Parties to the Term Loan Lenders, Revolving Credit Lenders, the applicable Swingline Lender or the Administrative Agent, in each case under any Loan Document, with respect to any Canadian Revolving Credit Loan, any Canadian Swingline Loan, any Canadian Letter of Credit and, to the extent applicable, any Incremental Term Loan made to the Canadian Borrowers of every kind, nature and description, direct or indirect, absolute or contingent, due or to become due, contractual or tortious, liquidated or unliquidated, and whether or not evidenced by any note and including interest and fees that accrue after the commencement by or against any Credit Party or any Affiliate thereof of any proceeding under any Debtor Relief Laws, naming such Person as the debtor in such proceeding, regardless of whether such interest and fees are allowed claims in such proceeding.

“Canadian Pension Laws” means the Pensions Benefit Act (Ontario), the ITA and any other Canadian federal or provincial pension benefits standards legislation and the regulations thereunder applicable to a Canadian Pension Plan or a Canadian Multiemployer Plan.

“Canadian Pension Plan” means any “registered pension plan” as defined under Section 248(l) of the ITA or any other registered or unregistered pension, or retirement or retirement savings plan and which (a) is sponsored, maintained, funded, contributed to or required to be contributed to, or administered for the employees or former employees of any Credit Party or any Subsidiary thereof or (b) has at any time within the preceding six (6) years been sponsored, maintained, funded, contributed to or required to be contributed to, or administered for the employees or former employees of any Credit Party or any Subsidiary thereof, and shall not include any Pension Plan, other than a Canadian Multiemployer Plan.

“Canadian Pension Plan Unfunded Liability” means an unfunded liability in respect of any Canadian Pension Plan, including a going concern unfunded liability, solvency deficiency, reduced solvency deficiency or wind-up deficiency, in each case, as reported in the most recent valuation report delivered under Section 8.2(j) in respect of such Canadian Pension Plan.

“Canadian Prime Rate” means the rate of interest publicly announced from time to time by the Canadian Reference Bank as its prime rate in effect for determining interest rates on Canadian Dollar denominated commercial loans in Canada (which such rate is not necessarily the most favored rate of the Canadian Reference Bank and the Canadian Reference Bank may lend to its customers at rates that are at, above or below such rate) or, if the Canadian Reference Bank ceases to announce a rate so designated, any similar successor rate designated by the Administrative Agent.

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“Canadian Reference Bank” means any one or more of The Bank of Nova Scotia, Bank of Montreal, Royal Bank of Canada, The Toronto-Dominion Bank, Canadian Imperial Bank of Commerce or National Bank of Canada, as the Administrative Agent may determine.

“Canadian Revolving Credit Loan” means any revolving loan denominated in Canadian Dollars made to the Canadian Borrowers pursuant to Section 2.1, and all such revolving loans collectively as the context requires, and shall include any Extended Revolving Credit Loans, any Refinancing Revolving Loans and any loans made pursuant to an Incremental Revolving Credit Facility Increase, in each case, related to such loans.

“Canadian Revolving Credit Note” means a promissory note made by the Canadian Borrowers in favor of a Revolving Credit Lender evidencing the Canadian Revolving Credit Loans made by such Revolving Credit Lender, substantially in the form attached as Exhibit A-2, and any substitutes therefor, and any replacements, restatements, renewals or extension thereof, in whole or in part.

“Canadian Secured Obligations” means, collectively, (a) the Canadian Obligations and (b) all existing or future payment and other obligations owing by any Canadian Credit Party or any Foreign Subsidiary under (i) any Secured Hedge Agreement with a Canadian Hedge Bank and (ii) any Secured Cash Management Agreement with a Canadian Cash Management Bank.

“Canadian Secured Parties” means, collectively, the Administrative Agent, the Lenders, the Canadian ▇▇▇▇▇ ▇▇▇▇▇, the Canadian Cash Management Banks, each co-agent or sub-agent appointed by the Administrative Agent from time to time pursuant to Section 11.5, any other holder from time to time of any Canadian Secured Obligations and, in each case, their respective successors and permitted assigns.

“Canadian Subsidiary” means any Subsidiary of Centuri that is organized under the laws of Canada or any province or territory thereof, including, without limitation, the Canadian Borrowers.

“Canadian Subsidiary Guarantors” means, collectively, all direct and indirect Canadian Subsidiaries in existence on the Closing Date (other than the Canadian Borrowers) or which become a party to the Canadian Credit Party Guarantee Agreement pursuant to Section 8.14.

“Canadian Swingline Loan” means any swingline loan denominated in Canadian Dollars made by the applicable Swingline Lender to a Canadian Borrower pursuant to Section 2.2, and all such swingline loans collectively as the context requires.

“Canadian Swingline Note” means a promissory note made by the Canadian Borrowers in favor of the applicable Swingline Lender evidencing the Canadian Swingline Loans made by the Swingline Lender, substantially in the form attached as Exhibit A-4, and any substitutes therefor, and any replacements, restatements, renewals or extension thereof, in whole or in part.

“Canadian Term Loan Note” means a promissory note made by any Canadian Borrower in favor of a Term Loan Lender evidencing the portion of any Incremental Term Loans made to such Canadian Borrower by such Term Loan Lender, substantially in the form attached as Exhibit A-6, and any substitutes therefor, and any replacements, restatements or extensions thereof, in whole or in part.

“Canadian Termination Event” means a Canadian Pension Plan Unfunded Liability in excess of the Threshold Amount or the occurrence of any of the following which, individually or in the aggregate, has resulted or could reasonably be expected to result in liability of any Credit Party or any Subsidiary thereof in an aggregate amount in excess of the Threshold Amount: (a) the institution of any steps by any Governmental Authority to order the termination or wind-up, in full or in part, of any Canadian Employee

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Benefit Plan, (b) the institution of any steps by a Credit Party to terminate, in full or in part, any Canadian Pension Plan if such plan has a Canadian Pension Plan Unfunded Liability, (c) an event respecting any Canadian Employee Benefit Plan which could reasonably be expected to result in the revocation of the registration of such Canadian Employee Benefit Plan which could otherwise reasonably be expected to adversely affect the Tax status of any such Canadian Employee Benefit Plan, (d) any event or condition which would reasonably constitute grounds under Canadian Pension Laws for the full or partial termination of, or the appointment of a trustee or replacement administrator to administer, any Canadian Employee Benefit Plan, (e) the partial or complete withdrawal of any Credit Party from a Canadian Multiemployer Plan if a withdrawal liability is asserted by such plan or by any Governmental Authority, or (f) any event or condition which results in the increase in the liability of any Credit Party or any Subsidiary thereof under a Canadian Multiemployer Plan.

“Capital Expenditures” means, with respect to the Consolidated Companies on a Consolidated basis, for any period, (a) the additions to property, plant and equipment and other capital expenditures that are (or would be) set forth in a consolidated statement of cash flows of such Person for such period prepared in accordance with GAAP and (b) Capital Lease Obligations during such period, but excluding expenditures for the restoration, repair or replacement of any fixed or capital asset which was destroyed or damaged, in whole or in part, to the extent financed by the proceeds of an insurance policy maintained by such Person.

“Capital Lease Obligations” of any Person means, subject to Section 1.3(b), the obligations of such Person to pay rent or other amounts under any lease of (or other arrangement conveying the right to use) real or personal property, or a combination thereof, which obligations are required to be classified and accounted for as finance leases on a balance sheet of such Person under GAAP, and the amount of such obligations shall be the capitalized amount thereof determined in accordance with GAAP.

“Cash Collateralize” means, to deposit in a Controlled Account or to pledge and deposit with, or deliver to the Administrative Agent, or directly to the applicable Issuing Lender (with notice thereof to the Administrative Agent), for the benefit of one or more of the Issuing Lenders, one or both of the Swingline Lenders or the Lenders, as collateral for L/C Obligations or obligations of the Lenders to fund participations in respect of L/C Obligations or Swingline Loans, cash or deposit account balances or, if the Administrative Agent and the applicable Issuing Lender and/or the applicable Swingline Lender, as the case may be, shall agree, in their sole discretion, other credit support, in each case pursuant to documentation in form and substance satisfactory to the Administrative Agent, such Issuing Lender and/or such Swingline Lender, as applicable. “Cash Collateral” shall have a meaning correlative to the foregoing and shall include the proceeds of such cash collateral and other credit support.

“Cash Equivalents” means, collectively, (a) marketable direct obligations issued or unconditionally guaranteed by Canada or the United States (or any agency thereof) maturing within one (1) year from the date of acquisition thereof, (b) commercial paper maturing no more than two hundred seventy (270) days from the date of creation thereof and currently having the highest rating obtainable from either S&P or ▇▇▇▇▇’▇ (or, if at any time either S&P or ▇▇▇▇▇’▇ are not rating such fund, an equivalent rating from another nationally recognized statistical rating agency), (c) investments in certificates of deposit, banker’s acceptances, money market deposits and time deposits maturing within one hundred eighty (180) days from the date of acquisition thereof issued or guaranteed by or placed with, and money market deposit accounts issued or offered by, any domestic office of any commercial bank organized under the laws of the United States of America or any state thereof that has a combined capital and surplus and undivided profits of not less than $500,000,000 and having a long-term debt rating of “A” or better by S&P or “A2” or better from ▇▇▇▇▇’▇ (or, if at any time either S&P or ▇▇▇▇▇’▇ are not rating the debt of such bank, an equivalent rating from another nationally recognized statistical rating agency), (d) time deposits maturing no more than thirty (30) days from the date of creation thereof with commercial banks or savings banks or savings and loan

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associations each having membership either in the FDIC or the CDIC or the deposits of which are insured by the FDIC or the CDIC and in amounts not exceeding the maximum amounts of insurance thereunder, and (e) investments in any money market fund or money market mutual fund that has (i) substantially all of its assets invested in the types of investments referred to in clauses (a) through (d) above, (ii) net assets of not less than $250,000,000 and (iii) a rating of at least A-2 from S&P or at least P-2 from ▇▇▇▇▇’▇ (or, if at any time either S&P or ▇▇▇▇▇’▇ are not rating such fund, an equivalent rating from another nationally recognized statistical rating agency).

“Cash Management Agreement” means any agreement to provide cash management services, including treasury, depository, overdraft, credit or debit card (including non-card electronic payables and purchasing cards), electronic funds transfer and other cash management arrangements.

“Cash Management Bank” means any US Cash Management Bank or Canadian Cash Management Bank.

“CDIC” means the Canada Deposit Insurance Corporation.

“CDOR Rate” means the rate of interest per annum determined by the Administrative Agent on the basis of the rate applicable to Canadian Dollar bankers’ acceptances for the applicable Interest Period (or if such Interest Period is not equal to a number of months, for a term equivalent to the number of months closest to such Interest Period) appearing on the “CDOR Page”, or any successor page of Refinitiv Benchmark Services (UK) Limited (or such other page or commercially available source displaying Canadian interbank bid rates for Canadian Dollar bankers’ acceptances as may be designated by the Administrative Agent from time to time), as of 10:00 a.m. (Toronto, Ontario time) on the first day of the applicable Interest Period (or if such day is not a Business Day, then on the immediately preceding Business Day). Each calculation by the Administrative Agent of the CDOR Rate shall be conclusive and binding for all purposes, absent manifest error.

Notwithstanding the foregoing, if the CDOR Rate shall be less than zero, such rate shall be deemed to be zero for purposes of this Agreement.

“CDOR Rate Loan” means any Loan bearing interest at a rate determined by reference to the CDOR Rate.

“Centuri” means Centuri Group, Inc. (formerly known as Centuri Construction Group, Inc.), a Nevada corporation.

“Centuri Canada” means Centuri Canada Division Inc., a corporation organized under the laws of the Province of Ontario, Canada.

“Centuri U.S. Division” means Centuri U.S. Division, Inc., formerly known as Meritus Group, Inc., a Nevada corporation.

“CFC” means a Foreign Subsidiary that is a “controlled foreign corporation” under Section 957 of the Code and any Subsidiary owned directly or indirectly by such Foreign Subsidiary.

“CFC Holdco” means a Subsidiary substantially all the assets of which consist of Equity Interests in Foreign Subsidiaries that each constitute a CFC and/or Indebtedness or accounts receivable owed by Foreign Subsidiaries that each constitute a CFC or are treated as owed by any such Foreign Subsidiaries for U.S. federal income tax purposes.

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“Change in Control” means an event or series of events by which (a) Centuri shall fail to own, directly or indirectly, and control (i) one hundred percent (100%) on a fully diluted basis of the economic and voting Equity Interests of each US Borrower, and (ii) one hundred percent (100%) on a fully diluted basis of the economic and voting Equity Interests of Centuri Canada or (b) Southwest Gas shall fail to own, directly or indirectly, and control at least fiftyone percent (51%) on a fully diluted basis of the economic and voting Equity Interests of each of the Borrowers.

“Change in Law” means the occurrence, after the date of this Agreement, of any of the following:

(a) the adoption or taking effect of any law, rule, regulation or treaty, (b) any change in any law, rule, regulation or treaty or in the administration, interpretation, implementation or application thereof by any Governmental Authority or (c) the making or issuance of any request, rule, guideline or directive (whether or not having the force of law) by any Governmental Authority; provided that notwithstanding anything herein to the contrary, (i) the ▇▇▇▇-▇▇▇▇▇ ▇▇▇▇ Street Reform and Consumer Protection Act and all requests, rules, guidelines or directives thereunder or issued in connection therewith and (ii) all requests, rules, guidelines or directives promulgated by the Bank for International Settlements, the Basel Committee on Banking Supervision (or any successor or similar authority) or the United States or foreign regulatory authorities, in each case pursuant to Basel III, shall in each case be deemed to be a “Change in Law”, regardless of the date enacted, adopted, implemented or issued.

“CIBC” means Canadian Imperial Bank of Commerce.

“Class” means (a) when used in reference to any Loan, whether such Loan is a Revolving Credit Loan, Swingline Loan, Term Loan, Extended Term Loan, Extended Revolving Credit Loan, Refinancing Revolving Loan of a given Refinancing Series or Refinancing Term Loan of a given Refinancing Series, and (b) when used in reference to any Commitment, whether such Commitment is a Revolving Credit Commitment, a Term Loan Commitment, an Extended Revolving Credit Commitment or Refinancing Revolving Credit Commitment of a given Refinancing Series.

“Closing Date” means the date of this Agreement.

“Code” means the United States Internal Revenue Code of 1986, and the rules and regulations promulgated thereunder.

“Collateral” means the collateral security for the Secured Obligations pledged or granted pursuant to the Security Documents.

“Commitment Fee” has the meaning assigned thereto in Section 5.3(a).

“Commitment Percentage” means, as to any Lender, such ▇▇▇▇▇▇’s Revolving Credit Commitment Percentage or Term Loan Percentage, as applicable.

“Commitments” means, collectively, as to all Lenders, the Revolving Credit Commitments and the Term Loan Commitments of such Lenders.

“Commodity Exchange Act” means the Commodity Exchange Act (7 U.S.C. § 1 et seq.).

“Connection Income Taxes” means Other Connection Taxes that are imposed on or measured by net income (however denominated) or that are franchise Taxes or branch profits Taxes.

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“Consolidated” means, when used with reference to financial statements or financial statement items of any Person, such statements or items on a consolidated basis in accordance with applicable principles of consolidation under GAAP.

“Consolidated Companies” means Centuri and its Subsidiaries.

“Consolidated EBITDA” means, for any period, the sum of the following determined on a Consolidated basis, without duplication, for the Consolidated Companies in accordance with GAAP:

(a) Consolidated Net Income for such period plus

(b) the sum of the following, without duplication, to the extent deducted in determining Consolidated Net Income (other than as set forth in clause (b)(x)(B)) for such period:

(i) income and franchise taxes,

(ii) Consolidated Interest Expense,

(iii) amortization (including, for the avoidance of doubt, impairment charges, and amortization of goodwill and intangible assets acquired or arising from a business acquisition, regardless of whether presented as a separate line item or included in other book entries), depreciation and other non-cash charges (except to the extent that such non-cash charges are reserved for cash charges to be taken in the future), including any noncash equity based compensation expense,

(iv) non-recurring expenses and restructuring charges reducing Consolidated Net Income which do not represent a cash item in such period,

(v) one-time fees and expenses in connection with the Drum Acquisition,

(vi) net unrealized losses resulting from mark to market accounting for hedging activities, including, without limitation those resulting from the application of FASB Accounting Standards Codification 815,

(vii) net unrealized non-cash losses resulting from foreign currency balance sheet adjustments required by GAAP,

(viii) all transaction fees, charges and other amounts related to this Agreement and any amendment or other modification to the Loan Documents, in each case to the extent paid within six (6) months of the Closing Date or the effectiveness of such amendment or other modification,

(ix) all transaction fees, charges and other amounts (including any financing fees, merger and acquisition fees, legal fees and expenses, due diligence fees or any other fees and expenses in connection therewith) in connection with any Permitted Acquisition, Investment, disposition, issuance or repurchase of Equity Interests, or the incurrence, amendment or waiver of Indebtedness permitted hereunder (other than those related to the Transactions or with respect to any amendment or modification of the Loan Documents), in each case, whether or not consummated, in each case to the extent paid within six (6) months of the closing or effectiveness of such event or the termination or abandonment of such transaction, as the case may be; provided that the aggregate amount added pursuant to this clause (b)(ix) taken together with the aggregate amount added pursuant to clause (b)(x) for any four quarter period shall in no event exceed twenty percent (20%) of Consolidated EBITDA for such period (calculated prior to any such add-backs pursuant to clauses (b)(ix) and (b)(x)),

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(i) (A) other unusual and non-recurring cash expenses or charges, (B) the amount of any “run rate” synergies, operating expense reductions and other net cost savings and integration costs, in each case projected by the Borrowers in connection with Permitted Acquisitions, Asset Dispositions (including the termination or discontinuance of activities constituting such business) and/or other operating improvement, restructuring, cost savings initiative or other similar initiative taken after the Closing Date that have been consummated during the applicable period (calculated on a Pro Forma Basis as though such synergies, expense reductions and cost savings had been realized on the first day of the period for which Consolidated EBITDA is being determined), net of the amount of actual benefits realized during such period from such actions and (C) solely during the period from June 30, 2021 through December 31, 2022, the amount of projected EBITDA relating to the fourteen Exelon and Avangrid Master Services Agreements awarded in 2020 in an amount equal to $14,300,000 less the cumulative amount of actual EBITDA relating to such agreements after June 30, 2021); provided that (i) such synergies, expense reductions and cost savings are reasonably identifiable, factually supportable, expected to have a continuing impact on the operations of the Combined Companies and have been determined by the Borrowers in good faith to be reasonably anticipated to be realizable within eighteen (18) months following any such action as set forth in reasonable detail on a certificate of a Responsible Officer of Centuri delivered to the Administrative Agent, (ii) no such amounts shall be added pursuant to this clause to the extent duplicative of any expenses or charges otherwise added to Consolidated EBITDA, whether through a pro forma adjustment, the definition of Pro Forma Basis or otherwise and (iii) the aggregate amount added pursuant to this clause (b) (x) taken together with the aggregate amount added pursuant to clause (b)(ix) for any four quarter period shall in no event exceed twenty percent (20%) of Consolidated EBITDA for such period (calculated prior to any such add-backs pursuant to clauses (b)(ix) and (b)(x)), less

(c) the sum of the following, without duplication, to the extent included in determining Consolidated Net Income for such period:

(x) interest income,

(xi) unusual or non-recurring gains,

(xii) net unrealized gains for items set forth in the foregoing clauses (b)(vi) and (vii),

(xiii) non-cash gains or non-cash items increasing Consolidated Net Income, and

(xiv) any cash expense made during such period which represents the reversal of any non-cash expense that was added in a prior period pursuant to clause (b)(iii) above subsequent to the fiscal quarter in which the relevant non-cash expenses, charges or losses were incurred.

For purposes of this Agreement, Consolidated EBITDA shall be adjusted on a Pro Forma Basis.

Notwithstanding the foregoing, Consolidated EBITDA for the fiscal quarters ending September 30,

2020, January 3, 2021, April 4, 2021 and July 4, 2021 shall be the amounts corresponding to such fiscal quarters set forth on Schedule 1.1(c).

“Consolidated Funded Indebtedness” means, as of any date of determination with respect to the Consolidated Companies on a Consolidated basis, without duplication, the sum of all Indebtedness (other 20 than Indebtedness in respect of obligations under any undrawn letter of credit) of the Consolidated Companies.

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“Consolidated Interest Coverage Ratio” means, as of any date of determination, determined on a Consolidated basis, without duplication, for the Consolidated Companies in accordance with GAAP: the ratio of (a) Consolidated EBITDA for the period of four (4) consecutive fiscal quarters ending on such date to (b) Consolidated Interest Expense for such period.

“Consolidated Interest Expense” means, for any period, the sum of the following determined on a Consolidated basis, without duplication, for the Consolidated Companies in accordance with GAAP, interest expense (including, without limitation, interest expense attributable to Capital Lease Obligations and all net payment obligations pursuant to Hedge Agreements) for such period. For purposes of this Agreement, Consolidated Interest Expense shall be adjusted on a Pro Forma Basis. Notwithstanding the foregoing, Consolidated Interest Expense for the period of four (4) consecutive fiscal quarters ending on September 30, 2021, December 31, 2021 and March 31, 2022 shall be calculated (i) for the fiscal quarter ending September 30, 2021, Consolidated Interest Expense for the fiscal quarter ending on such date times four (4), (ii) for the fiscal quarter ending December 31, 2021, Consolidated Interest Expense for the two consecutive fiscal quarters ending on such date times two (2) and (iii) for the fiscal quarter ending March 31, 2022, Consolidated Interest Expense for the three consecutive fiscal quarters ending on such date times four-third (4/3).

“Consolidated Net Leverage Ratio” means, as of any date of determination, the ratio of (a) Consolidated Funded Indebtedness on such date minus the amount of Unrestricted cash and Cash Equivalents of Centuri and its Subsidiaries (excluding the proceeds of any Incremental Term Loans or any other Indebtedness incurred or made substantially concurrent with the determination of the amount of such Unrestricted cash and Cash Equivalents) on such date, not to exceed $150,000,000, to (b) Consolidated EBITDA for the period of four (4) consecutive fiscal quarters ending on or immediately prior to such date.

“Consolidated Net Income” means, for any period, the net income (or loss) of the Consolidated Companies for such period, determined on a Consolidated basis, without duplication, in accordance with GAAP; provided, that in calculating Consolidated Net Income of the Consolidated Companies for any period, there shall be excluded (a) the net income (or loss) of any Person (other than a Subsidiary which shall be subject to clause (c) below), in which any of the Consolidated Companies has a joint interest with a third party, except to the extent such net income is actually paid in cash to any of the Consolidated Companies by dividend or other distribution during such period (provided that the net income (or loss) of ▇.▇. ▇▇▇▇▇▇▇▇ Western Construction, Ltd. and VRO Construction Partners 1, LLC attributable to the ownership percentage held by the Consolidated Companies shall be included regardless of whether such amounts are paid in cash to the Consolidated Companies), (b) the net income (or loss) of any Person accrued prior to the date it becomes a Subsidiary of any of the Consolidated Companies or is merged into or consolidated with any of the Consolidated Companies or that Person’s assets are acquired by any of the Consolidated Companies except to the extent included pursuant to the foregoing clause (a), (c) the net income (if positive), of any Subsidiary to the extent that the declaration or payment of dividends or similar distributions by such Subsidiary to any of the Consolidated Companies of such net income (i) is not at the time permitted by operation of the terms of its charter or any agreement, instrument, judgment, decree, order, statute, rule or governmental regulation applicable to such Subsidiary or (ii) would be subject to any taxes payable on such dividends or distributions, but in each case only to the extent of such prohibition or taxes and (d) any gain or loss from Asset Dispositions during such period.

“Consolidated Total Assets” means, on any date of determination, the Consolidated total assets of Centuri and its Subsidiaries as set forth on the Consolidated balance sheet of Centuri as of the last day of 21 the fiscal quarter of Centuri ending on or immediately prior to such date and for which financial statements have been provided to the Administrative Agent in accordance with Section 8.1, determined on a Consolidated basis.

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“Control” means the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of a Person, whether through the ability to exercise voting power, by contract or otherwise. “Controlling” and “Controlled” have meanings correlative thereto.

“Corresponding Tenor” with respect to any Available Tenor means, as applicable, either a tenor (including overnight) or an interest payment period having approximately the same length (disregarding business day adjustment) as such Available Tenor.

“Credit Facility” means, collectively, the Revolving Credit Facility, the Term Loan Facility, the Swingline Facility and the L/C Facility.

“Credit Parties” means, collectively, the US Credit Parties and the Canadian Credit Parties.

“Daily Simple SOFR” means, for any day, SOFR, with the conventions for this rate (which will include a lookback) being established by the Administrative Agent in accordance with the conventions for this rate selected or recommended by the Relevant Governmental Body for determining “Daily Simple SOFR” for syndicated business loans; provided, that if the Administrative Agent decides that any such convention is not administratively feasible for the Administrative Agent, then the Administrative Agent may establish another convention in its reasonable discretion.

“Debt Issuance” means the issuance of any Indebtedness for borrowed money by any Credit Party or any of its Subsidiaries.

“Debt Ratings” means the collective reference to (a) the public corporate family rating of Centuri as determined by ▇▇▇▇▇’▇ from time to time, (b) the public corporate credit rating of Centuri as determined by S&P from time to time and (c) the public ratings with respect to the Term Loan Facility as determined by both ▇▇▇▇▇’▇ and S&P from time to time, and “Debt Rating” means, as applicable, any of the foregoing.

“Debtor Relief Laws” means the Bankruptcy Code of the United States of America, the Bankruptcy and Insolvency Act (Canada), the Winding-Up and Restructuring Act (Canada), the Companies’ Creditors Arrangement Act (Canada) and all other liquidation, conservatorship, bankruptcy, assignment for the benefit of creditors, moratorium, rearrangement, receivership, insolvency, reorganization, or similar debtor relief Laws of the United States, Canada or other applicable jurisdictions from time to time in effect.

“Default” means any of the events specified in Section 10.1 which with the passage of time, the giving of notice or any other condition, would constitute an Event of Default.

“Defaulting Lender” means, subject to Section 5.15(b), any Lender that (a) has failed to (i) fund all or any portion of the Revolving Credit Loans or any Term Loan required to be funded by it hereunder within two Business Days of the date such Loans were required to be funded hereunder unless such Lender notifies the Administrative Agent and Centuri in writing that such failure is the result of such ▇▇▇▇▇▇’s determination that one or more conditions precedent to funding (each of which conditions precedent, together with any applicable default, shall be specifically identified in such writing) has not been satisfied, or (ii) pay to the Administrative Agent, any Issuing Lender, any Swingline Lender or any other Lender any other amount required to be paid by it hereunder (including in respect of its participation in Letters of Credit or Swingline Loans) within two Business Days of the date when due, (b) has notified Centuri, the Administrative Agent, any Issuing Lender or any Swingline Lender in writing that it does not intend to

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comply with its funding obligations hereunder, or has made a public statement to that effect (unless such writing or public statement relates to such ▇▇▇▇▇▇’s obligation to fund a Loan hereunder and states that such position is based on such ▇▇▇▇▇▇’s determination that a condition precedent to funding (which condition precedent, together with any applicable default, shall be specifically identified in such writing or public statement) cannot be satisfied), (c) has failed, within three Business Days after written request by the Administrative Agent or Centuri, to confirm in writing to the Administrative Agent and Centuri that it will comply with its prospective funding obligations hereunder (provided that such Lender shall cease to be a Defaulting Lender pursuant to this clause (c) upon receipt of such written confirmation by the Administrative Agent and Centuri), or (d) has, or has a direct or indirect parent company that has, (i) become the subject of a proceeding under any Debtor Relief Law, (ii) had appointed for it a receiver, custodian, conservator, trustee, administrator, assignee for the benefit of creditors or similar Person charged with reorganization or liquidation of its business or assets, including the CDIC, the FDIC or any other state or federal regulatory authority acting in such a capacity or (iii) become the subject of a Bail-In Action; provided that a Lender shall not be a Defaulting Lender solely by virtue of the ownership or acquisition of any equity interest in that Lender or any direct or indirect parent company thereof by a Governmental Authority so long as such ownership interest does not result in or provide such Lender with immunity from the jurisdiction of courts within the United States or from the enforcement of judgments or writs of attachment on its assets or permit such Lender (or such Governmental Authority) to reject, repudiate, disavow or disaffirm any contracts or agreements made with such Lender. Any determination by the Administrative Agent that a Lender is a Defaulting Lender under any one or more of clauses (a) through (d) above shall be conclusive and binding absent manifest error, and such Lender shall be deemed to be a Defaulting Lender (subject to Section 5.15(b)) upon delivery of written notice of such determination to Centuri, each Issuing Lender, each Swingline Lender and each Lender.

“Disqualified Equity Interests” means any Equity Interests that, by their terms (or by the terms of any security or other Equity Interest into which they are convertible or for which they are exchangeable) or upon the happening of any event or condition, (a) mature or are mandatorily redeemable (other than solely for Qualified Equity Interests), pursuant to a sinking fund obligation or otherwise (except as a result of a change of control or asset sale so long as any rights of the holders thereof upon the occurrence of a change of control or asset sale event shall be subject to the prior repayment in full of the Loans and all other Obligations that are accrued and payable and the termination of the Commitments), (b) are redeemable at the option of the holder thereof (other than solely for Qualified Equity Interests) (except as a result of a change of control or asset sale so long as any rights of the holders thereof upon the occurrence of a change of control or asset sale event shall be subject to the prior repayment in full of the Loans and all other Obligations that are accrued and payable and the termination of the Commitments), in whole or in part, (c) provide for the scheduled payment of dividends in cash or (d) are or become convertible into or exchangeable for Indebtedness or any other Equity Interests that would constitute Disqualified Equity Interests, in each case, prior to the date that is 91 days after the Term Loan Maturity Date; provided that if such Equity Interests are issued pursuant to a plan for the benefit of the Consolidated Companies or by any such plan to such employees, such Equity Interests shall not constitute Disqualified Equity Interests solely because they may be required to be repurchased by the Consolidated Companies in order to satisfy applicable statutory or regulatory obligations.

“Dollar Amount” means, with respect to any sum expressed in Canadian Dollars, the amount of Dollars which is equivalent to the amount so expressed in Canadian Dollars at the Spot Rate determined by the Administrative Agent to be available to it at the relevant time (including on each Revaluation Date).

“Dollars” or “$” means, unless otherwise qualified, dollars in lawful currency of the United States.

“Drum” means Drum Parent, Inc., a Delaware corporation.

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“Drum Acquisition” means the acquisition of Drum and its Subsidiaries pursuant to the Drum Merger Agreement.

“Drum Material Adverse Effect” means a “Material Adverse Effect”, as defined in the Drum Merger Agreement.

“Drum Merger Agreement” means that certain Agreement and Plan of Merger effective as of June 28, 2021, by and among Drum, Electric T&D Holdings LLC, as buyer, Centuri, ETDH Merger Sub, Inc. and OCM Drum Investors, L.P., as representative of the stockholders and optionholders of Drum immediately prior to the Drum Acquisition, as sellers, together with all schedules and exhibits thereto and as the same may be amended, restated, supplemented or otherwise modified from time to time prior to the Closing Date.

“Early Opt-in Election” means, if the then-current Benchmark is USD LIBOR, the occurrence of:

(a) a notification by the Administrative Agent to (or the request by Centuri to the Administrative Agent to notify) each of the other parties hereto that at least five currently outstanding Dollar-denominated syndicated credit facilities at such time contain (as a result of amendment or as originally executed) a SOFR-based rate (including SOFR, a term SOFR or any other rate based upon SOFR) as a benchmark rate (and such syndicated credit facilities are identified in such notice and are publicly available for review), and

(b) the joint election by the Administrative Agent and Centuri to trigger a fallback from USD LIBOR and the provision by the Administrative Agent of written notice of such election to the Lenders.

“ECF Percentage” means, with respect to any Fiscal Year, (a) 50%, if the Consolidated Net Leverage Ratio at the end of such Fiscal Year is greater than 4.00 to 1.00, (b) 25%, if the Consolidated Net Leverage Ratio at the end of such Fiscal Year is greater than to 3.50 to 1.00 but less than or equal to 4.00 to 1.00 and (c) 0%, if the Consolidated Net Leverage Ratio at the end of such Fiscal Year is less than or equal to 3.50 to 1.00.

“EEA Financial Institution” means (a) any credit institution or investment firm established in any EEA Member Country which is subject to the supervision of an EEA Resolution Authority, (b) any entity established in an EEA Member Country which is a parent of an institution described in clause (a) of this definition, or (c) any financial institution established in an EEA Member Country which is a subsidiary of an institution described in clauses (a) or (b) of this definition and is subject to consolidated supervision with its parent.

“EEA Member Country” means any of the member states of the European Union, Iceland, Liechtenstein, and Norway.

“EEA Resolution Authority” means any public administrative authority or any Person entrusted with public administrative authority of any EEA Member Country (including any delegee) having responsibility for the resolution of any credit institution or investment firm established in any EEA Member Country.

“Electronic Record” has the meaning assigned to that term in, and shall be interpreted in accordance with, 15 U.S.C. 7006.

“Electronic Signature” has the meaning assigned to that term in, and shall be interpreted in accordance with, 15 U.S.C. 7006.

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“Eligible Assignee” means any Person that meets the requirements to be an assignee under Section 12.9(b)(iii), (v) and (vi) (subject to such consents, if any, as may be required under Section 12.9(b)(iii)).

“Employee Benefit Plan” means (a) any employee benefit plan within the meaning of Section 3(3) of ERISA that is maintained for employees of any Credit Party or any ERISA Affiliate or (b) any Pension Plan or Multiemployer Plan that has at any time within the preceding seven (7) years been maintained, funded or administered for the employees of any Credit Party or any current or former ERISA Affiliate.

“Environmental Claims” means any and all administrative, regulatory or judicial actions, suits, demands, demand letters, claims, liens, accusations, allegations, notices of noncompliance or violation, investigations (other than internal reports prepared by any Person in the ordinary course of business and not in response to any third party action or request of any kind) or proceedings relating in any way to any actual or alleged violation of or liability under any Environmental Law or relating to any permit issued, or any approval given, under any such Environmental Law, including, without limitation, any and all claims by Governmental Authorities for enforcement, cleanup, removal, response, remedial or other actions or damages, contribution, indemnification, cost recovery, compensation or injunctive relief resulting from Hazardous Materials or arising from alleged injury or threat of injury to human health or the environment.

“Environmental Laws” means any and all federal, foreign, state, provincial and local laws, statutes, ordinances, codes, rules, standards and regulations, permits, licenses, approvals, interpretations and orders of courts or Governmental Authorities, relating to the protection of human health or the environment, including, but not limited to, requirements pertaining to the manufacture, processing, distribution, use, treatment, storage, disposal, transportation, handling, reporting, licensing, permitting, investigation or remediation of Hazardous Materials.

“Equity Interests” means (a) in the case of a corporation, capital stock, (b) in the case of an association or business entity, any and all shares, interests, participations, rights or other equivalents (however designated) of capital stock, (c) in the case of a partnership, partnership interests (whether general or limited), (d) in the case of a limited liability company, membership interests, (e) any other interest or participation that confers on a Person the right to receive a share of the profits and losses of, or distributions of assets of, the issuing Person and (f) any and all warrants, rights or options to purchase any of the foregoing.

“ERISA” means the Employee Retirement Income Security Act of 1974, and the rules and regulations thereunder.

“ERISA Affiliate” means any Person who together with any Credit Party or any of its Subsidiaries is treated as a single employer within the meaning of Section 414(b), (c), (m) or (o) of the Code or Section 4001(b) of ERISA.

“Erroneous Payment” has the meaning assigned thereto in Section 11.11(a).

“Erroneous Payment Deficiency Assignment” has the meaning assigned thereto in Section 11.11(d).

“Erroneous Payment Impacted Class” has the meaning assigned thereto in Section 11.11(d).

“Erroneous Payment Return Deficiency” has the meaning assigned thereto in Section 11.11(d).

“EU Bail-In Legislation Schedule” means the EU Bail-In Legislation Schedule published by the Loan Market Association (or any successor thereto) as in effect from time to time.

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“Eurodollar Reserve Percentage” means, for any day, the percentage which is in effect for such day as prescribed by the FRB for determining the maximum reserve requirement (including, without limitation, any basic, supplemental or emergency reserves) in respect of eurocurrency liabilities or any similar category of liabilities for a member bank of the Federal Reserve System in New York City.

“Event of Default” means any of the events specified in Section 10.1; provided that any requirement for passage of time, giving of notice, or any other condition, has been satisfied.

“Excess Cash Flow” means, for Centuri and its Subsidiaries on a Consolidated basis, in accordance with GAAP for any Fiscal Year:

(a) the sum, without duplication, of:

(i) Consolidated Net Income for such Fiscal Year; plus

(ii) an amount equal to the amount of all non-cash charges to the extent deducted in determining Consolidated Net Income for such Fiscal Year (excluding any non-cash charges representing an accrual or reserve for a potential cash charge in any future Fiscal Year or amortization of a prepaid cash gain that was paid in a prior Fiscal Year); plus

(iii) decreases in Working Capital for such Fiscal Year, minus

(b) the sum, without duplication, of:

(iv) the aggregate amount of cash actually paid by Centuri and its Subsidiaries during such Fiscal Year on account of Capital Expenditures, Permitted Acquisitions and other Investments pursuant to Section 9.3 (but excluding Investments in cash or Cash Equivalents and Investments in Centuri or any Subsidiary) (other than any amounts that were committed during a prior Fiscal Year to the extent such amounts reduced Excess Cash Flow in such prior Fiscal Year per clause (b)(ii) below), except to the extent any such Capital Expenditure, Permitted Acquisition or other Investment is made with the proceeds of long-term Indebtedness (other than Revolving Credit Loans), any Equity Issuance, casualty proceeds, condemnation proceeds or other proceeds that would not be included in Consolidated EBITDA; provided that any amount of Capital Expenditures deducted under this clause (b)(i) that are financed with long-term Indebtedness, any Equity Issuance, casualty proceeds, condemnation proceeds or other proceeds that would not be included in Consolidated EBITDA in a future period, shall be added to the calculation of Excess Cash Flow in the applicable future period; plus

(v) without duplication of amounts deducted from Excess Cash Flow in other periods, (A) the aggregate consideration required to be paid in cash by Centuri and its Subsidiaries pursuant to binding contracts, commitments, letters of intent or purchase orders (such amount, the “Contract Consideration”) entered into prior to or during such Fiscal Year and (B) any planned cash expenditures by Centuri and its Subsidiaries (such amount, the “Planned Expenditures”), in the case of each of clauses (A) and (B), relating to Permitted Acquisitions, Capital Expenditures and other Investments pursuant to Section 9.3 (but excluding Investments in cash or Cash Equivalents and Investments in Centuri or any Subsidiary) to be consummated or made during the period of four (4) consecutive fiscal quarters of Centuri following the end of such Fiscal Year and identified in writing to the Administrative Agent with reasonable supporting calculations, except to the extent any such Capital Expenditure, Permitted Acquisition or other Investment is made with the proceeds

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of long-term Indebtedness (other than Revolving Credit Loans), any Equity Issuance, casualty proceeds, condemnation proceeds or other proceeds that would not be included in Consolidated EBITDA; provided that to the extent that the aggregate amount of cash actually utilized to finance such Permitted Acquisitions, Capital Expenditures or other Investments during such following period of four consecutive fiscal quarters is less than such Contract Consideration and Planned Expenditures, the amount of such shortfall shall be added to the calculation of Excess Cash Flow, at the end of such period of four consecutive fiscal quarters; provided further that any amount of Contract Consideration and/or Planned Expenditures relating to Capital Expenditures deducted under this clause (b)(ii) that are financed with long-term Indebtedness, any Equity Issuance, casualty proceeds, condemnation proceeds or other proceeds that would not be included in Consolidated EBITDA in a future period, shall be added to the calculation of Excess Cash Flow in the applicable future period;

(vi) the aggregate amount of all scheduled principal payments or repayments of Indebtedness (other than mandatory prepayments of Loans) made by Centuri and its Subsidiaries during such Fiscal Year, but only to the extent that such payments or repayments by their terms cannot be reborrowed or redrawn and do not occur in connection with a refinancing of all or any portion of such Indebtedness, except to the extent such principal payments are financed with the proceeds of long-term Indebtedness, any Equity Issuance, casualty proceeds, condemnation proceeds or other proceeds that would not be included in Consolidated EBITDA; plus

(vii) the amount of Restricted Payments made by Centuri and its Subsidiaries in cash during such Excess Cash Flow Period pursuant to Section 9.6(e) and (f), in each case to the extent that such Restricted Payments are not financed with the proceeds of long-term Indebtedness, any Equity Issuance, casualty proceeds, condemnation proceeds or other proceeds that would not be included in Consolidated EBITDA; plus

(viii) an amount equal to the amount of all non-cash credits to the extent included in determining Consolidated Net Income for such Fiscal Year; plus

(ix) increases to Working Capital for such Fiscal Year.

“Exchange Act” means the Securities Exchange Act of 1934 (15 U.S.C. 78a et seq.).

“Excluded Subsidiary” means (a) each CFC, (b) each Subsidiary that is a direct or indirect Subsidiary of a CFC, (c) each CFC Holdco, (d) any Receivables Subsidiary, (e) any Subsidiary that is not a Wholly Owned Subsidiary if the organizational documents of such Subsidiary prohibit a guaranty by such Subsidiary of the Obligations or the pledge of the Equity Interests of such Subsidiary, and (f) any other Subsidiary with respect to which the Administrative Agent and the Borrower mutually agree that the cost of providing a Guarantee would be excessive in relation to the benefit to be afforded thereby.

“Excluded Swap Obligation” means, with respect to any Credit Party, any Swap Obligation if, and to the extent that, all or a portion of the liability of such Credit Party for or the guarantee of such Credit Party of, or the grant by such Credit Party of a security interest to secure, such Swap Obligation (or any liability or guarantee thereof) is or becomes illegal under the Commodity Exchange Act or any rule, regulation or order of the Commodity Futures Trading Commission (or the application or official interpretation of any thereof) by virtue of such Credit Party’s failure for any reason to constitute an “eligible contract participant” as defined in the Commodity Exchange Act and the regulations thereunder at the time the liability for or the guarantee of such Credit Party or the grant of such security interest becomes effective with respect to such Swap Obligation (such determination being made after giving effect to any applicable

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keepwell, support or other agreement for the benefit of the applicable Credit Party, including the keepwell provisions in each applicable Guaranty Agreement). If a Swap Obligation arises under a master agreement governing more than one swap, such exclusion shall apply only to the portion of such Swap Obligation that is attributable to swaps for which such guarantee or security interest is or becomes illegal for the reasons identified in the immediately preceding sentence of this definition.

“Excluded Taxes” means any of the following Taxes imposed on or with respect to a Recipient or required to be withheld or deducted from a payment to a Recipient, (a) Taxes imposed on or measured by net income (however denominated), franchise Taxes, and branch profits Taxes, in each case, (i) imposed as a result of such Recipient being organized under the laws of, or having its principal office or, in the case of any Lender, its applicable Lending Office located in, the jurisdiction imposing such Tax (or any political subdivision thereof) or (ii) that are Other Connection Taxes, (b) in the case of a Lender, United States federal withholding Taxes imposed on amounts payable to or for the account of such Lender with respect to an applicable interest in a Loan or Commitment pursuant to a law in effect on the date on which (i) such Lender acquires such interest in the Loan or Commitment (other than pursuant to an assignment request by Centuri under Section 5.12(b)) or (ii) such Lender changes its Lending Office, except in each case to the extent that, pursuant to Section 5.11, amounts with respect to such Taxes were payable either to such Lender’s assignor immediately before such Lender became a party hereto or to such Lender immediately before it changed its Lending Office, (c) Taxes attributable to such Recipient’s failure to comply with Section 5.11(g), (d) any United States federal withholding Taxes imposed under FATCA, and (e) any Canadian withholding Taxes imposed on a Lender by reason of such Lender (i) being a “specified shareholder” (as defined in subsection 18(5) of the ITA) of a Credit Party or (ii) not dealing at arm’s length (for purposes of the ITA) with a “specified shareholder” (as defined in subsection 18(5) of the ITA) of the Credit Party. (except, in the case of (e)(i) or (ii), where any such non-arm’s length or specified shareholder relationship arises solely in connection with or as a result of, any Lender or other Recipient hereunder having become a party to, received or perfected a security interest under, or received, exercised or enforced any rights hereunder or under any other Loan Document).

“Existing Credit Agreement” has the meaning assigned thereto in the Statement of Purpose hereto.

“Existing Lenders” has the meaning assigned thereto in the Statement of Purpose hereto.

“Existing Letters of Credit” means those letters of credit existing on the Closing Date and identified on Schedule 1.1(b).

“Extended Revolving Credit Commitment” means any Class of Revolving Credit Commitments the maturity of which shall have been extended pursuant to Section 5.19.

“Extended Revolving Credit Loans” means any Revolving Credit Loans made pursuant to the Extended Revolving Credit Commitments.

“Extended Term Loans” means any Class of Term Loans the maturity of which shall have been extended pursuant to Section 5.19.

“Extension” has the meaning assigned thereto in Section 5.19(a).

“Extension Amendment” means an amendment to this Agreement (which may, at the option of the Administrative Agent and the Borrowers, be in the form of an amendment and restatement of this Agreement) among the Credit Parties, the applicable extending Lenders, the Administrative Agent and, to the extent required by Section 5.19, the Issuing Lenders and/or the Swingline Lender implementing an Extension in accordance with Section 5.19.

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“Extension Offer” has the meaning assigned thereto in Section 5.19(a).

“Extensions of Credit” means, as to any Lender at any time, (a) an amount equal to the sum of (i) the aggregate principal amount of all Revolving Credit Loans made by such Lender then outstanding, (ii) such ▇▇▇▇▇▇’s Revolving Credit Commitment Percentage of the L/C Obligations then outstanding, (iii) such ▇▇▇▇▇▇’s Revolving Credit Commitment Percentage of the Swingline Loans then outstanding and (iv) the aggregate principal amount of the Term Loans made by such Lender then outstanding, or (b) the making of any Loan or participation in any Letter of Credit by such Lender, as the context requires.

“FASB ASC” means the Accounting Standards Codification of the Financial Accounting Standards Board.

“FATCA” means Sections 1471 through 1474 of the agreements entered into pursuant to Section 1471(b)(1) of Code, as of the date of this Agreement (or any amended or the Code, and any intergovernmental agreements and related successor version that is substantively comparable and not legislation or official administrative rules or regulations with materially more onerous to comply with), any current or respect thereto. future regulations or official interpretations thereof, any

“FCA” has the meaning assigned thereto in Section 1.11.

“FDIC” means the Federal Deposit Insurance Corporation.

“Federal Funds Rate” means, for any day, the rate per annum equal to the weighted average of the rates on overnight federal funds transactions with members of the Federal Reserve System on such day (or, if such day is not a Business Day, for the immediately preceding Business Day), as published by the Federal Reserve Bank of New York on the Business Day next succeeding such day, provided that if such rate is not so published for any day which is a Business Day, the Federal Funds Rate for such day shall be the average of the quotation for such day on such transactions received by the Administrative Agent from three federal funds brokers of recognized standing selected by the Administrative Agent.

Notwithstanding the foregoing, if the Federal Funds Rate shall be less than zero, such rate shall be deemed to be zero for the purposes of this Agreement.

“Fee Letters” means (a) that certain ▇▇▇▇▇ Fargo Fee Letter dated as of July 13, 2021, amongst Centuri, ▇▇▇▇▇ Fargo Securities, LLC and ▇▇▇▇▇ Fargo, (b) that certain Joint Fee Letter dated as of July 13, 2021 amongst the Borrowers, the Arrangers, ▇▇▇▇▇ Fargo, Bank of America, N.A., Canadian Imperial Bank of Commerce, PNC Bank, National Association, Truist Bank, U.S. Bank National Association and Bank of Montreal (c) any letter between one or more of the Borrowers and any Issuing Lender (other than ▇▇▇▇▇ Fargo) relating to certain fees payable to such Issuing Lender in its capacity as such, in each case, as amended, restated, supplemented or otherwise modified from time to time.

“First Amendment Effective Date” means November 4, 2022.

“First Tier Foreign Subsidiary” means any CFC or CFC Holdco the Equity Interests of which are owned directly by any US Credit Party.

“Fiscal Year” means the fiscal year of the Consolidated Companies ending on December 31.

“Floor” means, (i) with respect to the Initial Term Loan Facility, 0.50%, (ii) with respect to any Incremental Term Loan, Refinancing Term Loan or Extended Term Loan, the applicable floor determined pursuant to Section 5.13, 5.18 or 5.19, as applicable, and (iii) for any purpose other than as specified in clause (i), 0%.

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“Foreign Lender” means (a) with respect to the US Borrowers, a Lender that is not a U.S. Person, and (b) with respect to the Canadian Borrowers, a Lender that is resident or organized under the laws of a jurisdiction other than that in which the Canadian Borrowers are resident for tax purposes.

“Foreign Subsidiary” means any Subsidiary that is not a US Subsidiary.

“FRB” means the Board of Governors of the Federal Reserve System of the United States.

“Fronting Exposure” means, at any time there is a Defaulting Lender, (a) with respect to any Issuing Lender, such Defaulting Lender’s Revolving Credit Commitment Percentage of the outstanding L/C Obligations with respect to Letters of Credit issued by such Issuing Lender, other than such L/C Obligations as to which such Defaulting Lender’s participation obligation has been reallocated to other Lenders or Cash Collateralized in accordance with the terms hereof and (b) with respect to any Swingline Lender, such Defaulting Lender’s Revolving Credit Commitment Percentage of outstanding Swingline Loans other than Swingline Loans as to which such Defaulting Lender’s participation obligation has been reallocated to other Lenders or Cash Collateralized in accordance with the terms hereof.

“Fund” means any Person (other than a natural Person) that is (or will be) engaged in making, purchasing, holding or otherwise investing in commercial loans, bonds and similar extensions of credit in the ordinary course of its activities.

“GAAP” means generally accepted accounting principles in the United States set forth in the opinions and pronouncements of the Accounting Principles Board and the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board or such other principles as may be approved by a significant segment of the accounting profession in the United States, that are applicable to the circumstances as of the date of determination, consistently applied.

“Governmental Approvals” means all authorizations, consents, approvals, permits, licenses and exemptions of, and all registrations and filings with or issued by, any Governmental Authorities.

“Governmental Authority” means the government of the United States or Canada or any other nation, or of any political subdivision thereof, whether state, provincial or local, and any agency, authority, instrumentality, regulatory body, court, central bank or other entity exercising executive, legislative, judicial, taxing, regulatory or administrative powers or functions of or pertaining to government (including any supra-national bodies such as the European Union or the European Central Bank).

“Guarantee” of or by any Person (the “guarantor”) means any obligation, contingent or otherwise, of the guarantor guaranteeing or having the economic effect of guaranteeing any Indebtedness or other obligation of any other Person (the “primary obligor”) in any manner, whether directly or indirectly, and including any obligation of the guarantor, direct or indirect, (a) to purchase or pay (or advance or supply funds for the purchase or payment of) such Indebtedness or other obligation or to purchase (or to advance or supply funds for the purchase of) any security for the payment thereof, (b) to purchase or lease property, securities or services for the purpose of assuring the owner of such Indebtedness or other obligation of the payment thereof, (c) to maintain working capital, equity capital or any other financial statement condition or liquidity of the primary obligor so as to enable the primary obligor to pay such Indebtedness or other obligation, (d) as an account party in respect of any letter of credit or letter of guaranty issued to support such Indebtedness or obligation or (e) for the purpose of assuming in any other manner the obligee in respect of such Indebtedness or other obligation of the payment or performance thereof or to protect such obligee against loss in respect thereof (whether in whole or in part).

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“Guaranty Agreements” means, collectively, the US Credit Party Guaranty Agreement and the Canadian Credit Party Guarantee Agreement.

“Hazardous Materials” means any substances or materials (a) which are or become defined as hazardous wastes, hazardous substances, pollutants, contaminants, chemical substances or mixtures or toxic substances under any Environmental Law, (b) which are toxic, explosive, corrosive, flammable, infectious, radioactive, carcinogenic, mutagenic or otherwise harmful to human health or the environment and are or become regulated by any Governmental Authority, (c) the presence of which require investigation or remediation under any Environmental Law or common law, (d) the discharge or emission or release of which requires a permit or license under any Environmental Law or other Governmental Approval, (e) which are deemed by a Governmental Authority to constitute a nuisance or a trespass which pose a health or safety hazard to Persons or neighboring properties, (f) which consist of underground or aboveground storage tanks, whether empty, filled or partially filled with any substance or (g) which contain, without limitation, asbestos, polychlorinated biphenyls, urea formaldehyde foam insulation, petroleum hydrocarbons, petroleum derived substances or waste, crude oil, nuclear fuel, natural gas or synthetic gas.

“Hedge Agreement” means (a) any and all rate swap transactions, basis swaps, credit derivative transactions, forward rate transactions, commodity swaps, commodity options, forward commodity contracts, equity or equity index swaps or options, bond or bond price or bond index swaps or options or forward bond or forward bond price or forward bond index transactions, interest rate options, forward foreign exchange transactions, cap transactions, floor transactions, collar transactions, currency swap transactions, cross-currency rate swap transactions, currency options, spot contracts, or any other similar transactions or any combination of any of the foregoing (including any options to enter into any of the foregoing), whether or not any such transaction is governed by or subject to any master agreement, and (b) any and all transactions of any kind, and the related confirmations, which are subject to the terms and conditions of, or governed by, any form of master agreement published by the International Swaps and Derivatives Association, Inc., any International Foreign Exchange Master Agreement, or any other master agreement.

“Hedge Bank” means any US Hedge Bank or Canadian Hedge Bank.

“Hedge Termination Value” means, in respect of any one or more Hedge Agreements, after taking into account the effect of any legally enforceable netting agreement relating to such Hedge Agreements, (a) for any date on or after the date such Hedge Agreements have been closed out and termination value(s) determined in accordance therewith, such termination value(s), and (b) for any date prior to the date referenced in clause (a), the amount(s) determined as the mark-to-market value(s) for such Hedge Agreements, as determined based upon one or more mid-market or other readily available quotations provided by any recognized dealer in such Hedge Agreements (which may include a Lender or any Affiliate of a Lender).

“IBA” has the meaning assigned thereto in Section 1.11.

“Immaterial Subsidiary” means any Subsidiary designated in writing by Centuri to the Administrative Agent as an Immaterial Subsidiary that is not already a Credit Party and that does not, as of the last day of the most recently completed period of four (4) consecutive fiscal quarters for which Centuri has delivered financial statements pursuant to Section 6.1(e)(i), 8.1(a) or 8.1(b), as applicable, have assets with a value in excess of 2.0% of the Consolidated Total Assets of the Consolidated Companies and did

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not, as of such period, have revenues exceeding 2.0% of the Consolidated revenues of the Consolidated Companies; provided that if (a) such Subsidiary shall have been designated in writing by Centuri to the Administrative Agent as an Immaterial Subsidiary, and (b) if (i) the aggregate total assets then owned by all Subsidiaries of Centuri that would otherwise constitute Immaterial Subsidiaries shall have an aggregate value in excess of 5.0% of the Consolidated Total Assets of the Consolidated Companies as of the last day of such fiscal quarter or (ii) the combined revenues of all Subsidiaries of Centuri that would otherwise constitute Immaterial Subsidiaries shall exceed 5.0% of the Consolidated revenues of the Consolidated Companies for such four-quarter period, Centuri shall re-designate one or more of such Subsidiaries to not be Immaterial Subsidiaries within ten (10) Business Days after delivery of the Officer’s Compliance Certificate for such fiscal quarter such that only those such Subsidiaries as shall then have aggregate assets of less than 5.0% of the Consolidated Total Assets of the Consolidated Companies and combined revenues of less than 5.0% of the Consolidated revenues of the Consolidated Companies shall constitute Immaterial Subsidiaries. Notwithstanding the foregoing, in no event shall (A) any Subsidiary that owns a majority of the Equity Interests of a Material Subsidiary, (B) any Wholly-Owned US Subsidiary that owns, or otherwise licenses or has the right to use, trademarks and other intellectual property material to the operation of the Consolidated Companies or (C) any Subsidiary that is an obligor or guarantor of any Indebtedness of any Credit Party or any Subsidiary thereof in excess of the Threshold Amount, in any such case be designated as an Immaterial Subsidiary. Notwithstanding the foregoing, in no event shall any Subsidiary that is an obligor or guarantor of any Refinancing Debt, Junior Indebtedness or Incremental Equivalent Indebtedness be permitted to be designated as an “Immaterial Subsidiary” hereunder.

“Increase Effective Date” has the meaning assigned thereto in Section 5.13(c).

“Incremental Equivalent Indebtedness” has the meaning assigned thereto in Section 9.1(m).

“Incremental Amendment” has the meaning assigned thereto in Section 5.13(d).

“Incremental Increases” has the meaning assigned thereto in Section 5.13(a)(ii).

“Incremental Lender” has the meaning assigned thereto in Section 5.13(b).

“Incremental Revolving Credit Facility Increase” has the meaning assigned thereto in Section 5.13(a)(ii).

“Incremental Term Loan” has the meaning assigned thereto in Section 5.13(a)(i).

“Incremental Term Loan Commitment” means the commitment of any Lender to make an Incremental Term Loan to a Borrower in accordance with Section 5.13.

“Indebtedness” means, with respect to any Person at any date and without duplication, the sum of the following:

(a) all liabilities, obligations and indebtedness for borrowed money including, but not limited to, obligations evidenced by bonds, debentures, notes or other similar instruments of any such Person;

(b) all obligations to pay the deferred purchase price of property or services of any such Person (including, without limitation, all obligations under non-competition, earn-out or similar agreements), except trade payables arising in the ordinary course of business not more than ninety (90) days past due, or that are currently being contested in good faith by appropriate proceedings and with respect to which reserves in conformity with GAAP have been provided for on the books of such Person;

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(c) the Attributable Indebtedness of such Person with respect to such Person’s Capital Lease Obligations and Synthetic Leases (regardless of whether accounted for as indebtedness under GAAP);

(d) all obligations of such Person under conditional sale or other title retention agreements relating to property purchased by such Person to the extent of the value of such property (other than customary reservations or retentions of title under agreements with suppliers entered into in the ordinary course of business);

(e) all Indebtedness of any other Person secured by a Lien on any asset owned or being purchased by such Person (including indebtedness arising under conditional sales or other title retention agreements except trade payables arising in the ordinary course of business), whether or not such indebtedness shall have been assumed by such Person or is limited in recourse;

(f) all obligations, contingent or otherwise, of any such Person relative to the face amount of letters of credit, whether or not drawn, including, without limitation, any Reimbursement Obligation, and banker’s acceptances issued for the account of any such Person;

(g) all obligations of any such Person in respect of Disqualified Equity Interests;

(h) all net obligations of such Person under any Hedge Agreements; and

(i) all Guarantees of any such Person with respect to any of the foregoing.

For all purposes hereof, the Indebtedness of any Person shall include the Indebtedness of any partnership or joint venture (other than a joint venture that is itself a corporation or limited liability company) in which such Person is a general partner or a joint venturer, unless such Indebtedness is expressly made non-recourse to such Person. The amount of any net obligation under any Hedge Agreement on any date shall be deemed to be the Hedge Termination Value thereof as of such date. In respect of Indebtedness of another Person secured by a Lien on the assets of the specified Person, the amount of such Indebtedness as of any date of determination will be the lesser of (x) the fair market value of such assets as of such date and (y) the amount of such Indebtedness as of such date.

“Indemnified Taxes” means (a) Taxes, other than Excluded Taxes, imposed on or with respect to any payment made by or on account of any obligation of any Credit Party under any Loan Document and

(b) to the extent not otherwise described in clause (a), Other Taxes. “Indemnitee”

has the meaning assigned thereto in Section 12.3(b).

“Information” has the meaning assigned thereto in Section 12.10.

“Initial Term Loan” means the term loan denominated in Dollars made to Centuri, by the Term Loan Lenders pursuant to Section 4.1.

“Insurance and Condemnation Event” means the receipt by any Credit Party or any of its Subsidiaries of any cash insurance proceeds or condemnation award payable by reason of theft, loss, physical destruction or damage, taking or similar event with respect to any of their respective Property.

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“Interest Period” means, as to each LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan, the period commencing on the date such LIBOR Rate Loan, SOFR Loan and CDOR Rate Loan is disbursed or converted to or continued as a LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan and ending on the date that is (x) with respect to LIBOR Rate Loans and SOFR Loans, one (1), three (3) or six (6) months thereafter and (y) with respect to CDOR Rate Loans, one (1), two (2) or three (3) months thereafter, in each case as selected by the applicable Borrower in its Notice of Borrowing or Notice of Conversion/Continuation and subject to availability; provided that:

(e) the Interest Period shall commence on the date of advance of or conversion to any LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan and, in the case of immediately successive Interest Periods, each successive Interest Period shall commence on the date on which the immediately preceding Interest Period expires;

(f) if any Interest Period would otherwise expire on a day that is not a Business Day, such Interest Period shall expire on the next succeeding Business Day; provided that if any Interest Period with respect to a LIBOR Rate Loan or CDOR Rate Loan would otherwise expire on a day that is not a Business Day but is a day of the month after which no further Business Day occurs in such month, such Interest Period shall expire on the immediately preceding Business Day;

(g) any Interest Period with respect to a LIBOR Rate Loan or CDOR Rate Loan that begins on the last Business Day of a calendar month (or on a day for which there is no numerically corresponding day in the calendar month at the end of such Interest Period) shall end on the last Business Day of the relevant calendar month at the end of such Interest Period;

(h) no Interest Period shall extend beyond the Revolving Credit Maturity Date or the Term Loan Maturity Date, as applicable, and Interest Periods shall be selected by the applicable Borrower so as to permit such Borrower to make the quarterly principal installment payments pursuant to Section 4.3 without payment of any amounts pursuant to Section 5.9; and

(i) there shall be no more than sixteen (16) Interest Periods in effect at any time.

“Interstate Commerce Act” means the body of law commonly known as the Interstate Commerce Act (49 U.S.C §§ 1 et seq.).

“Investment Company Act” means the Investment Company Act of 1940 (15 U.S.C. § 80(a)(1), et seq.).

“IRS” means the United States Internal Revenue Service.

“ISP98” means the International Standby Practices (1998 Revision, effective January 1, 1999), International Chamber of Commerce Publication No. 590.

“Issuing Lenders” means (a) ▇▇▇▇▇ Fargo, solely in its capacity as issuer of US Letters of Credit, (b) CIBC, solely in its capacity as issuer of Canadian Letters of Credit, (c) solely with respect to Existing Letters of Credit, the applicable issuer thereof listed on Schedule 1.1(b) and (d) any other Revolving Credit Lender to the extent it has agreed, in its sole discretion, to act as an “Issuing Lender” hereunder and that has been approved in writing by ▇▇▇▇▇▇▇ and the Administrative Agent (such approval by the Administrative Agent not to be unreasonably delayed or withheld), in each case in its capacity as issuer of any Letter of Credit (including each Existing Letter of Credit) hereunder or any successor thereto.

“ITA” means the Income Tax Act (Canada), as amended from time to time.

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“Junior Indebtedness” means, with respect to Centuri and its Subsidiaries, any (a) Subordinated Indebtedness, (b) Indebtedness secured by Liens that are junior to the Liens securing the Secured Obligations and (c) unsecured Indebtedness (excluding intercompany Indebtedness) with an aggregate outstanding principal amount in excess of the Threshold Amount.

“L/C Commitment” means, as to any Issuing Lender, the obligation of such Issuing Lender to issue Letters of Credit for the account of the Borrowers or one or more of their respective Subsidiaries from time to time in an aggregate amount equal to such amount as set forth on Schedule 1.1(d) or as separately agreed to in a written agreement between Centuri and such Issuing Lender (which such agreement shall be promptly delivered to the Administrative Agent upon execution), in each case any such amount may be changed after the Closing Date in a written agreement between Centuri and such Issuing Lender (which such agreement shall be promptly delivered to the Administrative Agent upon execution); provided that the L/C Commitment with respect to any Person that ceases to be an Issuing Lender for any reason pursuant to the terms hereof shall be $0 (subject to the Letters of Credit of such Person remaining outstanding in accordance with the provisions hereof).

“L/C Facility” means the letter of credit facility established pursuant to Article III.

“L/C Obligations” means, collectively, the Canadian L/C Obligations and the US L/C Obligations.

“L/C Participants” means, with respect to any Letter of Credit, the collective reference to all the Revolving Credit Lenders other than the applicable Issuing Lender.

“L/C Sublimit” means the lesser of (a) $100,000,000125,000,000 and (b) the Revolving Credit Commitment.

“LCA Test Date” has the meaning assigned thereto in Section 1.12(a).

“Lender” means each Person executing this Agreement as a Lender on the Closing Date and any other Person that shall have become a party to this Agreement as a Lender pursuant to an Assignment and Assumption or pursuant to Section 5.13, other than any Person that ceases to be a party hereto as a Lender pursuant to an Assignment and Assumption. Unless the context otherwise requires, the term “Lenders” includes the Swingline Lenders.

“Lending Office” means, with respect to any Lender, the office of such Lender maintaining such Lender’s Extensions of Credit.

“Letter of Credit Application” means an application and a reimbursement agreement, in the form specified by the applicable Issuing Lender from time to time, requesting such Issuing Lender to issue a Letter of Credit.

“Letters of Credit” means the collective reference to Canadian Letters of Credit and US Letters of Credit.

“Leverage Ratio Increase” has the meaning assigned thereto in Section 9.13(b).

“LIBOR” means, subject to the implementation of a Benchmark Replacement in accordance with Section 5.8(c),

(j) for any interest rate calculation with respect to a LIBOR Rate Loan, the rate of interest per annum determined on the basis of the rate for deposits in Dollars for a period equal to the applicable Interest

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Period as published by the ICE Benchmark Administration Limited, a United Kingdom company, or a comparable or successor quoting service approved by the Administrative Agent, at approximately 11:00 a.m. (London time) two (2) London Banking Days prior to the first day of the applicable Interest Period. If, for any reason, such rate is not so published then “LIBOR” shall be determined by the Administrative Agent to be the arithmetic average of the rate per annum at which deposits in Dollars would be offered by first class banks in the London interbank market to the Administrative Agent at approximately 11:00 a.m. (London time) two (2) London Banking Days prior to the first day of the applicable Interest Period for a period equal to such Interest Period, and

(k) for any interest rate calculation with respect to a Base Rate Loan, the rate of interest per annum determined on the basis of the rate for deposits in Dollars for an Interest Period equal to one month (commencing on the date of determination of such interest rate) as published by the ICE Benchmark Administration Limited, a United Kingdom company, or a comparable or successor quoting service approved by the Administrative Agent, at approximately 11:00 a.m. (London time) on such date of determination, or, if such date is not a Business Day, then the immediately preceding Business Day. If, for any reason, such rate is not so published then “LIBOR” for such Base Rate Loan shall be determined by the Administrative Agent to be the arithmetic average of the rate per annum at which deposits in Dollars would be offered by first class banks in the London interbank market to the Administrative Agent at approximately 11:00 a.m. (London time) on such date of determination for a period equal to one month commencing on such date of determination.

Each calculation by the Administrative Agent of LIBOR shall be conclusive and binding for all purposes, absent manifest error.

Notwithstanding the foregoing, (x) in no event shall LIBOR (including, without limitation, any Benchmark Replacement with respect thereto) be less than the Floor and (y) unless otherwise specified in any amendment to this Agreement entered into in accordance with Section 5.8(c), in the event that a Benchmark Replacement with respect to LIBOR is implemented then all references herein to LIBOR shall be deemed references to such Benchmark Replacement.

“LIBOR Rate” means a rate per annum determined by the Administrative Agent pursuant to the following formula:

LIBOR Rate = LIBOR

1.00-Eurodollar Reserve Percentage

“LIBOR Rate Loan” means any Loan bearing interest at a rate based upon the LIBOR Rate as provided in Section 5.1(a).

“Lien” means, with respect to any asset, any mortgage, leasehold mortgage, lien, pledge, charge, security interest, hypothecation or encumbrance of any kind in respect of such asset whether statutory, based on common law, contract, or otherwise. For the purposes of this Agreement, a Person shall be deemed to own subject to a Lien any asset which it has acquired or holds subject to the interest of a vendor or lessor under any conditional sale agreement, Capital Lease Obligation or other title retention agreement relating to such asset.

“Limited Condition Acquisition” means any Acquisition that (a) is not prohibited hereunder and (b) is not conditioned on the availability of, or on obtaining, third-party financing. “Linetec” means Linetec Services, LLC, a Delaware limited liability company.

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“Linetec Purchase Agreement” means that certain Membership Interest Purchase Agreement dated November 26, 2018 by and among, inter alia, Centuri U.S. Division, Linetec and the existing sole equity holders of Linetec, including all exhibits, schedules and annexes thereto.

“Loan Documents” means, collectively, this Agreement, each Note, the Letter of Credit Applications, the Security Documents, the Guaranty Agreements, the Fee Letters, each Acceptable Intercreditor Agreement, each Refinancing Amendment, each Incremental Amendment, each Extension Amendment and each other document, instrument, certificate and agreement executed and delivered by the Credit Parties or any of their respective Subsidiaries in favor of or provided to the Administrative Agent or any Secured Party in connection with this Agreement or otherwise referred to herein or contemplated hereby (excluding any Secured Hedge Agreement and any Secured Cash Management Agreement).

“Loans” means the collective reference to the Revolving Credit Loans, the Term Loans and the Swingline Loans, and “Loan” means any of such Loans.

“London Banking Day” means any day on which dealings in Dollar deposits are conducted by and between banks in the London interbank Eurodollar market.

“Material Adverse Effect” means, with respect to the Consolidated Companies, (a) a material adverse effect on the properties, business, operations or financial condition of such Persons, taken as a whole, (b) a material impairment of the ability of any such Person to perform its obligations under the Loan Documents to which it is a party, (c) a material impairment of the rights and remedies of the Administrative Agent or any Lender under any Loan Document or (d) an impairment of the legality, validity, binding effect or enforceability against any Credit Party of any Loan Document to which it is a party.

“Material Subsidiary” means, as of any date, any Subsidiary that is not an Immaterial Subsidiary.

“Minimum Collateral Amount” means, at any time, (a) with respect to Cash Collateral consisting of cash or deposit account balances, an amount equal to 100% of the sum of (i) the Fronting Exposure of the Issuing Lenders with respect to Letters of Credit issued and outstanding at such time and (ii) the Fronting Exposure of the Swingline Lenders with respect to all Swingline Loans outstanding at such time and (b) otherwise, an amount determined by the Administrative Agent and each of the applicable Issuing Lenders that is entitled to Cash Collateral hereunder at such time in their sole discretion.

“Moody’s” means ▇▇▇▇▇’▇ Investors Service, Inc.

“Multiemployer Plan” means a “multiemployer plan” as defined in Section 4001(a)(3) of ERISA to which any Credit Party or any ERISA Affiliate is making, or is accruing an obligation to make, or has accrued an obligation to make contributions within the preceding seven (7) years.

“Net Cash Proceeds” means, as applicable, (a) with respect to any Asset Disposition or Insurance and Condemnation Event, the gross proceeds received by any Credit Party or any of its Subsidiaries therefrom (including any cash, Cash Equivalents, deferred payment pursuant to, or by monetization of, a note receivable or otherwise, as and when received) less the sum of (i) in the case of an Asset Disposition, all income taxes and other taxes assessed by, or reasonably estimated to be payable to, a Governmental Authority as a result of such transaction (provided that if such estimated taxes exceed the amount of actual taxes required to be paid in cash in respect of such Asset Disposition, the amount of such excess shall constitute Net Cash Proceeds), (ii) all customary out-of-pocket fees and expenses incurred in connection with such transaction or event and (iii) the principal amount of, premium, if any, and interest on any Indebtedness secured on a pari passu on senior ranking to the Liens created under the Loan Documents by a Lien on the asset (or a portion thereof) disposed of, which Indebtedness is required to be repaid in

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connection with such transaction or event, and (b) with respect to any Debt Issuance, the gross cash proceeds received by any Credit Party or any of its Subsidiaries therefrom less all customary out-of-pocket legal, underwriting and other fees and expenses (whether similar or dissimilar to the foregoing) incurred in connection therewith.

“Non-Consenting Lender” means any Lender that does not approve any consent, waiver, amendment, modification or termination of any Loan Document that (a) requires the approval of all Lenders or all affected Lenders in accordance with the terms of Section 12.2 and (b) has been approved by the Required Lenders or the Required Facility Lenders, as applicable.

“Non-Credit Party Subsidiary” means any Subsidiary of a Consolidated Company that is not a Credit Party.

“Non-Defaulting Lender” means, at any time, each Lender that is not a Defaulting Lender at such time.

“Notes” means the collective reference to the US Revolving Credit Notes, the US Swingline Note, the US Term Loan Notes, the Canadian Revolving Credit Notes, the Canadian Swingline Note and the Canadian Term Loan Notes.

“Notice of Account Designation” has the meaning assigned thereto in Section 2.3(b).

“Notice of Borrowing” has the meaning assigned thereto in Section 2.3(a).

“Notice of Conversion/Continuation” has the meaning assigned thereto in Section 5.2.

“Notice of Prepayment” has the meaning assigned thereto in Section 2.4(c).

“Obligations” means, collectively, the Canadian Obligations and the US Obligations.

“OFAC” means the U.S. Department of the Treasury’s Office of Foreign Assets Control.

“Officer’s Compliance Certificate” means a certificate of the chief financial officer or the treasurer of Centuri substantially in the form attached as Exhibit F.

“Operating Lease” means, as to any Person as determined in accordance with GAAP, any lease of Property (whether real, personal or mixed) by such Person as lessee which is not a Capital Lease Obligation.

“Other Connection Taxes” means, with respect to any Recipient, Taxes imposed as a result of a present or former connection between such Recipient and the jurisdiction imposing such Tax (other than connections arising from such Recipient having executed, delivered, become a party to, performed its obligations under, received payments under, received or perfected a security interest under, engaged in any other transaction pursuant to or enforced any Loan Document, or sold or assigned an interest in any Loan or Loan Document).

“Other Taxes” means all present or future stamp, court, documentary, intangible, recording, filing or similar Taxes that arise from any payment made under, from the execution, delivery, performance, enforcement or registration of, from the receipt or perfection of a security interest under, or otherwise with respect to, any Loan Document, except any such Taxes that are Other Connection Taxes imposed with respect to an assignment (other than an assignment made pursuant to Section 5.12).

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“Participant” has the meaning assigned thereto in Section 12.9(d).

“Participant Register” has the meaning assigned thereto in Section 12.9(d).

“PATRIOT Act” means the USA PATRIOT Act (Title III of Pub. L. 107-56 (signed into law October 26, 2001)).

“Payment Recipient” has the meaning assigned thereto in Section 11.11(a).

“PBGC” means the Pension Benefit Guaranty Corporation or any successor agency.

“Pension Plan” means any Employee Benefit Plan, other than a Multiemployer Plan, which is subject to the provisions of Title IV of ERISA or Section 412 of the Code and which (a) is maintained, funded or administered for the employees of any Credit Party or any ERISA Affiliate or (b) has at any time within the preceding seven (7) years been maintained, funded or administered for the employees of any Credit Party or any current or former ERISA Affiliates and shall not include any Canadian Pension Plan.

“Permitted Acquisition” means any Acquisition by any Credit Party if each such Acquisition meets all of the following requirements (subject, in the case of a Permitted Acquisition that is a Limited Condition Acquisition, to Section 1.12):

(l) no less than fifteen (15) Business Days prior to the proposed closing date of such Acquisition (or such shorter period as agreed to by the Administrative Agent in its sole discretion), Centuri shall have delivered written notice of such Acquisition to the Administrative Agent and the Lenders, which notice shall include the proposed closing date of such Acquisition;

(m) Centuri shall have certified on or before the closing date of such Acquisition, in writing and in a form reasonably acceptable to the Administrative Agent, that such Acquisition has been approved by the board of directors (or equivalent governing body) of the Person to be acquired;

(n) the Person or business to be acquired shall be in a line of business permitted pursuant to Section 9.11 or, in the case of an Acquisition of assets, the assets acquired are useful in the business of the Consolidated Companies as conducted immediately prior to such Acquisition;

(o) if such transaction is a merger, amalgamation, or consolidation, a Borrower or a Subsidiary Guarantor shall be the surviving Person and no Change in Control shall have been effected thereby;

(p) Centuri shall have delivered to the Administrative Agent such documents reasonably requested by the Administrative Agent or the Required Lenders (through the Administrative Agent) pursuant to Section 8.14 to be delivered at the time required pursuant to Section 8.14;

(q) Centuri shall be in compliance with the financial covenants set forth in Section 9.13 (giving effect to any Leverage Ratio Increase that has been elected pursuant to Section 9.13(b))(i) a Consolidated Interest Coverage Ratio of 2.50 to 1.00 and (ii) a Consolidated Net Leverage Ratio of (A) 5.50 to 1.00 for the period beginning on September 30, 2022 through and including December 30, 2022, (B) 4.75 to 1.00 for the period beginning on December 31, 2022 through and including December 30, 2023 and (C) 4.00 to 1.00 for the period beginning on December 31, 2023 and thereafter, in each case, calculated on a Pro Forma Basis (as of the most recent Fiscal Quarter end preceding the proposed closing date of the acquisition for which financial statements are available and after giving effect thereto and any Indebtedness incurred in connection therewith);

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(a) if the Permitted Acquisition Consideration for any such Acquisition (or series of related Acquisitions) exceeds $150,000,000 in the aggregate, no later than five (5) Business Days (or such shorter period as agreed to by the Administrative Agent in its sole discretion) prior to the proposed closing date of such Acquisition, Centuri shall have delivered to the Administrative Agent an Officer’s Compliance Certificate for the most recent fiscal quarter end preceding such Acquisition for which financial statements are available demonstrating, in form and substance reasonably satisfactory to the Administrative Agent, that the condition set forth in paragraph (f) above is satisfied;

(b) if the Permitted Acquisition Consideration for any such Acquisition (or series of related Acquisitions) exceeds $150,000,000 in the aggregate, no later than five (5) Business Days (or such shorter period as agreed to by the Administrative Agent in its sole discretion) prior to the proposed closing date of such Acquisition, Centuri, to the extent requested by the Administrative Agent, (i) shall have delivered to the Administrative Agent promptly upon the finalization thereof copies of substantially final Permitted Acquisition Documents, and (ii) shall have delivered to, or made available for inspection by, the Administrative Agent substantially complete Permitted Acquisition Diligence Information;

(c) no Default or Event of Default shall have occurred and be continuing both before and after giving effect to such Acquisition and any Indebtedness incurred in connection therewith; and

(d) if the Permitted Acquisition Consideration for any such Acquisition (or series of related Acquisitions) exceeds $150,000,000 in the aggregate, Centuri shall have (i) delivered to the Administrative Agent a certificate of a Responsible Officer certifying that all of the requirements set forth above have been satisfied or waived or will be satisfied or waived on or prior to the consummation of such purchase or other Acquisition and (ii) provided such other documents and other information as may be reasonably requested by the Administrative Agent in connection with such purchase or other Acquisition.

Notwithstanding the foregoing, the Drum Acquisition shall constitute a Permitted Acquisition. “Permitted

Acquisition Consideration” means the aggregate amount of the purchase price,

including, but not limited to, any assumed debt, earn-outs (valued at the maximum amount payable thereunder), deferred payments, or Equity Interests of any Borrower or any Subsidiary Guarantor, net of the applicable acquired company’s cash and Cash Equivalents balance (as shown on its most recent financial statements delivered in connection with the applicable Permitted Acquisition) to be paid on a singular basis in connection with any applicable Permitted Acquisition as set forth in the applicable Permitted Acquisition Documents executed by such Borrower or such Subsidiary Guarantor in order to consummate the applicable Permitted Acquisition.

“Permitted Acquisition Diligence Information” means with respect to any Acquisition proposed by any Borrower or any Subsidiary Guarantor, to the extent applicable, all material financial information, all material contracts, all material customer lists, all material supply agreements, and all other material information, in each case, reasonably requested to be delivered to the Administrative Agent in connection with such Acquisition (except to the extent that any such information is (a) subject to any confidentiality agreement, unless mutually agreeable arrangements can be made to preserve such information as confidential, (b) classified or (c) subject to any attorney-client privilege).

“Permitted Acquisition Documents” means with respect to any Acquisition proposed by any Borrower or any Subsidiary Guarantor, final copies or substantially final drafts if not executed at the required time of delivery of the purchase agreement, sale agreement, merger agreement, amalgamation agreement or other agreement evidencing such Acquisition, including, without limitation, all legal opinions and each other document executed, delivered, contemplated by or prepared in connection therewith and any amendment, modification or supplement to any of the foregoing.

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“Permitted Drum Equity” means the Equity Interests of Drum Parent LLC (formerly Drum Parent, Inc.) in an amount not to exceed 5.0% of the total Equity Interests of Drum Parent LLC.

“Permitted Liens” means the Liens permitted pursuant to Section 9.2.

“Permitted Receivables Transaction” means one or more transactions pursuant to which (a) Receivables Assets or interests therein are sold to or financed by one or more Receivables Subsidiaries, and such Receivables Subsidiaries finance their acquisition of such Receivables Assets or interests therein, or the financing thereof, by selling or borrowing against such Receivables Assets or (b) Receivable Assets or interests therein are sold or discounted directly to one or more investors or other purchasers (other than Centuri or any Subsidiary), including, without limitation, in connection with a supply chain arrangement or other receivables discount program; provided that in each case such transactions shall be non-recourse (except in respect of fees, costs, indemnifications, representations and warranties and other obligations in which recourse is available against originators or servicers of Receivables Assets included in special-purpose-vehicle receivables financing arrangements, in each case, other than any of the foregoing which are in effect credit support substitutes) to Centuri and its Subsidiaries (other than a Receivables Subsidiary) and neither Centuri nor any of its Subsidiaries (other than a Receivables Subsidiary) shall provide credit support of any kind.

“Permitted Receivables Transaction Documents” means all documents and agreements evidencing, relating to or otherwise governing a Permitted Receivables Transaction.

“Person” means any natural person, corporation, limited liability company, trust, joint venture, association, company, partnership, Governmental Authority or other entity.

“Platform” has the meaning assigned thereto in Section 8.2.

“PPSA” means the Personal Property Security Act of Ontario or any successor statute or similar legislation of any jurisdiction the laws of which are required by such legislation to be applied in connection with the issue, perfection, enforcement, validity or effect of security interests.

“Prime Rate” means, at any time, the rate of interest per annum publicly announced from time to time by the Administrative Agent as its prime rate. Each change in the Prime Rate shall be effective as of the opening of business on the day such change in such prime rate occurs. The parties hereto acknowledge that the rate announced publicly by the Administrative Agent as its prime rate is an index or base rate and shall not necessarily be its lowest or best rate charged to its customers or other banks.

“Pro Forma Basis” means, for any period during which one or more Specified Transactions occurs, that such Specified Transaction (and all other Specified Transactions that have been consummated during the applicable period) shall be deemed to have occurred as of the first day of the applicable period of measurement and for purposes of calculations made of the financial covenants in Section 9.13, (a) after consummation of any Specified Disposition (i) income statement items (whether positive or negative) and Capital Expenditures attributable to the Property or Person disposed of shall be excluded and (ii) Indebtedness which is retired shall be excluded and deemed to have been retired as of the first day of the applicable period and (b) after consummation of any Permitted Acquisition (i) income statement items (whether positive or negative) and Capital Expenditures attributable to the Person or Property acquired shall, to the extent not otherwise included in such income statement items for Consolidated Companies in accordance with GAAP or in accordance with any defined terms set forth in Section 1.1, be included to the

41

extent relating to any period applicable in such calculations, and (ii) to the extent not retired in connection with such Permitted Acquisition, Indebtedness of the Person or Property acquired shall be deemed to have been incurred as of the first day of the applicable period.

“Property” means any right or interest in or to property of any kind whatsoever, whether real, personal or mixed and whether tangible or intangible, including, without limitation, Equity Interests.

“PTE” means a prohibited transaction class exemption issued by the U.S. Department of Labor, as any such exemption may be amended from time to time.

“Public Lenders” has the meaning assigned thereto in Section 8.2.

“Qualified Equity Interests” means any Equity Interests that are not Disqualified Equity Interests.

“Receivables Assets” means accounts receivable (including any bills of exchange), notes receivable, lease receivables or other instruments from time to time originated, acquired or otherwise owned by Centuri or any Subsidiary in the ordinary course of business, including any thereof constituting or evidenced by chattel paper, instruments or general intangibles, and all proceeds thereof and rights (contractual and other) and collateral (including all general intangibles, documents, instruments and records) related thereto.

“Receivables Subsidiary” means any direct or indirect special purpose, bankruptcy-remote Subsidiary of Centuri established in connection with a Permitted Receivables Transaction for the acquisition of Receivables Assets or interests therein, and which is organized in a manner intended to reduce the likelihood that it would be substantively consolidated with the Borrower or any of its Subsidiaries (other than Receivables Subsidiaries) in the event Centuri or any such Subsidiary becomes subject to a proceeding under any Debtor Relief Laws.

“Recipient” means (a) the Administrative Agent, (b) any Lender and (c) any Issuing Lender, as applicable.

“Reference Time” with respect to any setting of the then-current Benchmark means (1) if such Benchmark is USD LIBOR, 11:00 a.m. (London time) on the day that is two (2) London Banking Days preceding the date of such setting, and (2) if such Benchmark is not USD LIBOR, the time determined by the Administrative Agent in its reasonable discretion.

“Refinance” has the meaning assigned thereto in Section 5.18(a).

“Refinancing Amendment” has the meaning assigned thereto in Section 5.18(d).

“Refinancing Debt” means Refinancing Term Loans, Refinancing Revolving Credit Commitments, Refinancing Revolving Loans and/or Refinancing Notes, as the context requires.

“Refinancing Effective Date” has the meaning assigned thereto in Section 5.18(b).

“Refinancing Lender” has the meaning assigned thereto in Section 5.18(c).

“Refinancing Notes” has the meaning assigned thereto in Section 5.18(a).

“Refinancing Revolving Credit Commitments” has the meaning assigned thereto in Section 5.18(a).

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“Refinancing Revolving Loans” has the meaning assigned thereto in Section 5.18(a).

“Refinancing Series” has the meaning assigned thereto in Section 5.18(c).

“Refinancing Term Loans” has the meaning assigned thereto in Section 5.18(a).

“Register” has the meaning assigned thereto in Section 12.9(c).

“Reimbursement Obligation” means the obligation of the Borrowers to reimburse any Issuing Lender pursuant to Section 3.5 for amounts drawn under Letters of Credit issued by such ▇▇▇▇▇▇▇ ▇▇▇▇▇▇.

“Related Parties” means, with respect to any Person, such Person’s Affiliates and the partners, directors, officers, employees, agents, trustees, administrators, managers, advisors and representatives of such Person and of such Person’s Affiliates.

“Relevant Governmental Body” means the FRB or the Federal Reserve Bank of New York, or a committee officially endorsed or convened by the FRB or the Federal Reserve Bank of New York, or any successor thereto.

“Repricing Transaction” means (a) any prepayment or repayment of all or a portion of the Initial Term Loan with the proceeds of, or any conversion of any such Initial Term Loan into, any new or replacement bank Indebtedness or other credit facility (whether under this Agreement or otherwise), including, without limitation, any Refinancing Term Loans or Refinancing Notes, bearing interest with an All-In Yield less than the All-In Yield applicable to such Initial Term Loan subject to such event and (b) any repricing of any of the Initial Term Loan (whether pursuant to an amendment, amendment and restatement, mandatory assignment or otherwise) which reduces the All-In Yield applicable to all or a portion of such Initial Term Loan, in each case, other than in connection with the consummation of an Acquisition not permitted under this Agreement, an initial public offering of Centuri or the occurrence of a Change in Control (so long as the primary purpose of the prepayment or repayment of, or amendment to such Initial Term Loan in connection therewith is not to reduce the All-In Yield applicable to such Initial Term Loan as certified by a financial officer of Centuri in a certificate to the Administrative Agent (on which the Administrative Agent is expressly permitted to rely)).

“Required Facility Lenders” means (a) for the Revolving Credit Facility, the Required Revolving Credit Lenders or (b) for the Term Loan Facility, the Required Term Loan Lenders, as applicable.

“Required Lenders” means, at any time, two or more Lenders having Total Credit Exposures representing more than fifty percent (50%) of the Total Credit Exposures of all Lenders or, if the Commitments have been terminated, two or more Lenders holding more than fifty percent (50%) of the aggregate outstanding Extensions of Credit. The Total Credit Exposure of any Defaulting Lender shall be disregarded in determining Required Lenders at any time.

“Required Revolving Credit Lenders” means, at any date, any combination of two or more Revolving Credit Lenders that are not Affiliates (except if there is only one Revolving Credit Lender) holding more than fifty percent (50%) of the sum of the aggregate amount of the Revolving Credit Commitment or, if the Revolving Credit Commitment has been terminated, any combination of Revolving Credit Lenders holding more than fifty percent (50%) of the aggregate Extensions of Credit under the Revolving Credit Facility; provided that the Revolving Credit Commitment of, and the portion of the Extensions of Credit under the Revolving Credit Facility, as applicable, held or deemed held by, any Defaulting Lender shall be excluded for purposes of making a determination of Required Revolving Credit Lenders.

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“Required Term Loan Lenders” means, at any time, ▇▇▇▇▇▇▇ having outstanding Term Loans, representing more than fifty percent (50%) of the sum of the aggregate outstanding Term Loans at such time. The outstanding Term Loans of any Defaulting Lender shall be disregarded in determining Required Term Loan Lenders at any time.

“Resolution Authority” means an EEA Resolution Authority or, with respect to any UK Financial Institution, a UK Resolution Authority.

“Responsible Officer” means, as to any Person, the chief executive officer, president, chief financial officer, controller, treasurer or assistant treasurer of such Person or any other officer of such Person reasonably acceptable to the Administrative Agent. Any document delivered hereunder or under any other Loan Document that is signed by a Responsible Officer of a Person shall be conclusively presumed to have been authorized by all necessary corporate, partnership and/or other action on the part of such Person and such Responsible Officer shall be conclusively presumed to have acted on behalf of such Person.

“Restricted Payment” has the meaning assigned thereto in Section 9.6.

“Revaluation Date” means, with respect to any Extension of Credit, each of the following: (a) each date of a borrowing, conversion or continuation of any Loan, but only as to the amounts so borrowed on such date, (b) each date of issuance of any Letter of Credit, but only as to the Letter of Credit so issued, amended or extended on such date, and (c) such additional dates as the Administrative Agent shall determine or the Required Lenders shall require.

“Revolving Credit Commitment” means (a) as to any Revolving Credit Lender, the obligation of such Revolving

Credit Lender to make Revolving Credit Loans to, and to purchase participations in L/C Obligations and Swingline Loans for the account of, the Borrowers hereunder in an aggregate principal amount at any time outstanding not to exceed the amount set forth opposite such Revolving Credit Lender’s name on the Register, as such amount may be modified at any time or from time to time pursuant to the terms hereof (including, without limitation, Section 5.13) and (b) as to all Revolving Credit Lenders, the aggregate commitment of all Revolving Credit Lenders to make Revolving Credit Loans, as such amount may be modified at any time or from time to time pursuant to the terms hereof (including, without limitation, Section 5.13). The aggregate Revolving Credit Commitment of all the Revolving Credit Lenders on the Closing Date shall be $400,000,000. The initial Revolving Credit Commitment of each Revolving Credit Lender on the Closing Date is set forth opposite the name of such Lender on Schedule 1.1(a). The Revolving Credit Commitment of any Lender shall include the Extended Revolving Credit Commitment and Refinancing Revolving Credit Commitment of such Lender.

“Revolving Credit Commitment Percentage” means, with respect to any Revolving Credit Lender at any time, the percentage of the total Revolving Credit Commitments of all the Revolving Credit Lenders represented by such Revolving Credit ▇▇▇▇▇▇’s Revolving Credit Commitment. If the Revolving Credit Commitments have terminated or expired, the Revolving Credit Commitment Percentages shall be determined based upon the Revolving Credit Commitments most recently in effect, giving effect to any assignments. The initial Revolving Credit Commitment of each Revolving Credit Lender is set forth opposite the name of such Lender on Schedule 1.1(a).

“Revolving Credit Exposure” means, as to any Revolving Credit Lender at any time, the aggregate principal amount at such time of its outstanding Revolving Credit Loans and such Revolving Credit Lender’s participation in L/C Obligations and Swingline Loans at such time.

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“Revolving Credit Facility” means the revolving credit facility established pursuant to Article II (including any increase in such revolving credit facility established pursuant to Section 5.13, any Refinance pursuant to Section 5.18 and any Extension pursuant to Section 5.19).

“Revolving Credit Lenders” means, collectively, all of the Lenders with a Revolving Credit Commitment. With respect to (a) each provision of this Agreement relating to the making or the repayment of any Canadian Revolving Credit Loan, (b) any rights of set-off, (c) any rights of indemnification or expense reimbursement and (d) reserves, capital adequacy or other provisions, each reference to a “Revolving Credit Lender” shall be deemed to include such Revolving Credit Lender’s Applicable Designee with respect to the portion of such Revolving Credit Lender’s Commitment funded by such Applicable Designee.

“Revolving Credit Loan” means, collectively, all US Revolving Credit Loans and all Canadian Revolving Credit Loans.

“Revolving Credit Maturity Date” means the earliest to occur of (a) August 27, 2026, (b) the date of termination of the entire Revolving Credit Commitment by the US Borrowers pursuant to Section 2.5, and (c) the date of termination of the Revolving Credit Commitment pursuant to Section 10.2(a); provided, that the Revolving Credit Maturity Date applicable to Extended Revolving Credit Commitments and Refinancing Revolving Credit Commitments shall be the final maturity date specified in the relevant documentation for such Extended Revolving Credit Commitments or Refinancing Revolving Credit Commitments.

“Revolving Credit Outstandings” means the sum of (a) with respect to Revolving Credit Loans and Swingline Loans on any date, the aggregate outstanding principal amount thereof after giving effect to any borrowings and prepayments or repayments of Revolving Credit Loans and Swingline Loans, as the case may be, occurring on such date; plus (b) with respect to any L/C Obligations on any date, the aggregate outstanding amount thereof on such date after giving effect to any Revolving Extensions of Credit occurring on such date and any other changes in the aggregate amount of the L/C Obligations as of such date, including as a result of any reimbursements of outstanding unpaid drawings under any Letters of Credit or any reductions in the maximum amount available for drawing under Letters of Credit taking effect on such date.

“Revolving Extensions of Credit” means (a) any Revolving Credit Loan then outstanding, (b) any Letter of Credit then outstanding or (c) any Swingline Loan then outstanding.

“S&P” means Standard & Poor’s Rating Service, a division of S&P Global Inc. and any successor thereto.

“Sanctioned Country” means at any time, a region, country or territory which is itself the subject or target of any Sanctions (which, as of the Closing Date, consists of Cuba, Iran, North Korea, Syria and Crimea).

“Sanctioned Person” means, at any time, (a) any Person listed in any Sanctions-related list of designated Persons maintained by OFAC, the U.S. Department of State, the United Nations Security Council, the European Union, any member state of the European Union, Her Majesty’s Treasury of the United Kingdom, Global Affairs Canada, or other relevant sanctions authority, (b) any Person operating, organized or resident in a Sanctioned Country or (c) any Person owned or controlled by any such Person or Persons described in clauses (a) and (b).

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“Sanctions” means sanctions, trade embargoes and anti-terrorism laws, including, but not limited to, those imposed, administered or enforced from time to time by the U.S. government (including those administered by OFAC or the U.S. Department of State), the United Nations Security Council, the European Union, any member state of the European Union, Her Majesty’s Treasury of the United Kingdom, Global Affairs Canada, or other relevant sanctions authority.

“Secured Cash Management Agreement” means any Cash Management Agreement between or among any Credit Party or applicable Subsidiary thereof and any Cash Management Bank.

“Secured Hedge Agreement” means any Hedge Agreement between or among any Credit Party or applicable Subsidiary thereof and any Hedge Bank.

“Secured Obligations” means, collectively, (a) the Obligations and (b) all existing or future payment and other obligations owing by any Credit Party under (i) any Secured Hedge Agreement (other than an Excluded Swap Obligation) and (ii) any Secured Cash Management Agreement.

“Secured Parties” means, collectively, the Canadian Secured Parties and the US Secured Parties.

“Securities Act” means the Securities Act of 1933 (15 U.S.C. §§ 77 et seq.).

“Security Documents” means the collective reference to the US Collateral Agreement, Canadian Collateral Agreement, and each other agreement or writing pursuant to which any Credit Party pledges or grants a security interest in any Property or assets securing the Secured Obligations.

“SOFR” means, with respect to any Business Day, a rate per annum equal to the secured overnight financing rate for such Business Day publishedas administered by the SOFR Administrator on the SOFR Administrator’s Website on the immediately succeeding Business Day.

“SOFR Administrator” means the Federal Reserve Bank of New York (or a successor administrator of the secured overnight financing rate).

“SOFR Administrator’s Website” means the website of the Federal Reserve Bank of New York, currently at ▇▇▇▇://▇▇▇.▇▇▇▇▇▇▇▇▇▇.▇▇▇, or any successor source for the secured overnight financing rate identified as such by the SOFR Administrator from time to timeLoan” means any Loan bearing interest at a rate based on Adjusted Term SOFR as provided in Section 5.1(a).

“Solvent” and “Solvency” mean, with respect to any Person on any date of determination, that on such date (a)

the fair value of the property of such Person is greater than the total amount of liabilities, including contingent liabilities, of such Person, (b) the present fair salable value of the assets of such Person is not less than the amount that will be required to pay the probable liability of such Person on its debts as they become absolute and matured, (c) such Person does not intend to, and does not believe that it will, incur debts or liabilities beyond such Person’s ability to pay such debts and liabilities as they mature, (d) such Person is not engaged in business or a transaction, and is not about to engage in business or a transaction, for which such Person’s property would constitute an unreasonably small capital, and (e) such Person is able to pay its debts and liabilities, contingent obligations and other commitments as they mature in the ordinary course of business. The amount of contingent liabilities at any time shall be computed as the amount that, in the light of all the facts and circumstances existing at such time, represents the amount that can reasonably be expected to become an actual or matured liability.

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“Southwest Gas” means Southwest Gas Holdings, Inc., a Delaware corporation.

“Specified Disposition” means any Asset Disposition (or series of related Asset Dispositions) having gross sales proceeds in excess of $10,000,000.

“Specified Representations” means the representations and warranties set forth in the Loan Documents relating to corporate existence of the Credit Parties and good standing of the Credit Parties in their respective jurisdictions of organization; power and authority, due authorization, execution and delivery and enforceability, in each case, relating to the Credit Parties entering into and performance of the Loan Documents; no conflicts with or consents under the Credit Parties’ organizational documents; Solvency of the Borrowers and their respective subsidiaries on a Consolidated basis as of the Closing Date (after giving effect to the Transactions); Federal Reserve margin regulations; the Investment Company Act; use of proceeds not in violation of Sanctions, Anti-Money Laundering Laws, Anti-Corruption Laws and Beneficial Ownership Certifications; and creation, validity and perfection of security interests in the Collateral; and the status of the Credit Facilities and the guaranties thereof as senior debt (or equivalent term) and, to the extent applicable, “designated senior debt” (or an equivalent term).

“Specified Transactions” means (a) any Specified Disposition consummated after the Closing Date, (b) any Permitted Acquisition consummated after the Closing Date and (c) the Transactions.

“Spot Rate” for a currency means the rate determined by the Administrative Agent to be the rate quoted by the Person acting in such capacity as the spot rate for the purchase by such Person of such currency with another currency through its principal foreign exchange trading office at approximately 11:00 a.a.  on the date two (2) Business Days prior to the date as of which the foreign exchange computation is made; provided that the Administrative Agent may obtain such spot rate from another financial institution reasonably designated by the Administrative Agent if the Person acting in such capacity does not have as of the date of determination a spot buying rate for any such currency.

“Subordinated Indebtedness” means the collective reference to any Indebtedness incurred by any Consolidated Company that is subordinated in right and time of payment to the Obligations on terms and conditions satisfactory to the Administrative Agent.

“Subsidiary” means as to any Person, any corporation, partnership, limited liability company or other entity of which more than fifty percent (50%) of the outstanding Equity Interests having ordinary voting power to elect a majority of the board of directors (or equivalent governing body) or other managers of such corporation, partnership, limited liability company or other entity is at the time owned by (directly or indirectly) or the management is otherwise controlled by (directly or indirectly) such Person (irrespective of whether, at the time, Equity Interests of any other class or classes of such corporation, partnership, limited liability company or other entity shall have or might have voting power by reason of the happening of any contingency). Unless otherwise qualified, references to “Subsidiary” or “Subsidiaries” herein shall refer to those of Centuri.

“Subsidiary Guarantors” means, collectively, the US Subsidiary Guarantors and the Canadian Subsidiary Guarantors.

“Swap Obligation” means, with respect to any Credit Party, any obligation to pay or perform under any agreement, contract or transaction that constitutes a “swap” within the meaning of section 1a(47) of the Commodity Exchange Act.

“Swingline Commitment” means the lesser of (a) $30,000,000 and (b) the Revolving Credit Commitment.

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“Swingline Facility” means the swingline facility established pursuant to Section 2.2.

“Swingline Lender” means (a) ▇▇▇▇▇ Fargo, solely in its capacity as swingline lender with respect to US Swingline Loans and (b) CIBC, solely in its capacity as swingline lender with respect to Canadian Swingline Loans, in each case, or any successor thereto.

“Swingline Loan” means, a US Swingline Loan or a Canadian Swingline Loan, as the context requires, and “Swingline Loans” means, collectively, all US Swingline Loans and all Canadian Swingline Loans.

“Synthetic Lease” means any synthetic lease, tax retention operating lease, off-balance sheet loan or similar off-balance sheet financing product where such transaction is considered borrowed money indebtedness for tax purposes but is classified as an Operating Lease in accordance with GAAP.

“Taxes” means all present or future taxes, levies, imposts, duties, deductions, withholdings (including backup withholding), assessments, fees or other charges imposed by any Governmental Authority, including any interest, fines, additions to tax or penalties applicable thereto.

“Term Loan Commitment” means (a) as to any Term Loan Lender, the obligation of such Term Loan Lender to make a portion of the Initial Term Loan and/or Incremental Term Loans, as applicable, to the account of the US Borrowers or the Canadian Borrowers, as applicable, hereunder on the Closing Date or the applicable borrowing date (in the case of any Incremental Term Loan) in an aggregate principal amount not to exceed the amount set forth opposite such Lender’s name on the Register, as such amount may be increased, reduced or otherwise modified at any time or from time to time pursuant to the terms hereof and (b) as to all Term Loan Lenders, the aggregate commitment of all Term Loan Lenders to make such Initial Term Loan. The aggregate Term Loan Commitment with respect to the Initial Term Loan of all Term Loan Lenders on the Closing Date shall be $1,145,000,000.

“Term Loan Facility” means the term loan facility established pursuant to Article IV (including any new term loan facility established pursuant to Section 5.13, each facility providing for the borrowing of Refinancing Term Loans and each facility providing for the borrowing of Extended Term Loans).

“Term Loan Lender” means any Lender with a Term Loan Commitment and/or outstanding Term Loans, each reference to a “Term Loan Lender” shall be deemed to include such Term Loan Lender’s Applicable Designee with respect to the portion of such Term Loan Lender’s Term Loan Commitment funded by such Applicable Designee.

“Term Loan Maturity Date” means the first to occur of (a) August 27, 2028 and (b) the date of acceleration of the Term Loans pursuant to Section 10.2(a); provided, that the Term Loan Maturity Date applicable to Incremental Term Loans, Extended Term Loans and Refinancing Term Loans shall be the final maturity date specified in the relevant documentation for such Incremental Term Loans, Extended Term Loans and Refinancing Term Loans.

“Term Loan Percentage” means, with respect to any Term Loan Lender at any time, the percentage of the total outstanding principal balance of the Term Loans represented by the outstanding principal balance of such Term Loan Lender’s Term Loans.

“Term Loans” means the Initial Term Loan and, if applicable, the Incremental Term Loans, the Extended Term Loans and the Refinancing Term Loans, and “Term Loan” means any of such Term Loans.

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“Term SOFR” means:

(a) for purposes of Revolving Credit Loans and Swingline Loans:

(i) for any calculation with respect to a SOFR Loan, the Term SOFR Reference Rate for a tenor comparable to the applicable Interest Period on the day (such day, the “Periodic Term SOFR Determination Day”) that is two (2) US Government Securities Business Days prior to the first day of such Interest Period, as such rate is published by the Term SOFR Administrator; provided, however, that if as of 5:00 p.m. (Eastern time) on any Periodic Term SOFR Determination Day the Term SOFR Reference Rate for the applicable tenor has not been published by the Term SOFR Administrator and a Benchmark Replacement Date (Non-LIBOR) with respect to the Term SOFR Reference Rate has not occurred, then Term SOFR will be the Term SOFR Reference Rate for such tenor as published by the Term SOFR Administrator on the first preceding US Government Securities Business Day for which such Term SOFR Reference Rate for such tenor was published by the Term SOFR Administrator so long as such first preceding US Government Securities Business Day is not more than three (3) US Government Securities Business Days prior to such Periodic Term SOFR Determination Day, and

(ii) for any calculation with respect to a Base Rate Loan on any day, the Term SOFR Reference Rate for a tenor of one month on the day (such day, the “Base Rate Term SOFR Determination Day”) that is two (2) US Government Securities Business Days prior to such day, as such rate is published by the Term SOFR Administrator; provided, however, that if as of 5:00 p.m. (Eastern time) on any Base Rate Term SOFR Determination Day the Term SOFR Reference Rate for the applicable tenor has not been published by the Term SOFR Administrator and a Benchmark Replacement Date (Non-LIBOR) with respect to the Term SOFR Reference Rate has not occurred, then Term SOFR will be the Term SOFR Reference Rate for such tenor as published by the Term SOFR Administrator on the first preceding US Government Securities Business Day for which such Term SOFR Reference Rate for such tenor was published by the Term SOFR Administrator so long as such first preceding US Government Securities Business Day is not more than three (3) US Government Securities Business Days prior to such Base Rate SOFR Determination Day; and

(b) for all other purposes, for the applicable Corresponding Tenor as of the applicable Reference Time, the forward-looking term rate based on SOFR that has been selected or recommended by the Relevant Governmental Body.

“Term SOFR Adjustment” means a percentage equal to 0.10% per annum.

“Term SOFR Administrator” means CME Group Benchmark Administration Limited (CBA) (or a successor administrator of the Term SOFR Reference Rate selected by the Administrative Agent in its reasonable discretion).

“Term SOFR Notice” means a notification by the Administrative Agent to the Lenders and the Borrower of the occurrence of a Term SOFR Transition Event.

“Term SOFR Reference Rate” means the forward-looking term rate based on SOFR.

“Term SOFR Transition Event” means the determination by the Administrative Agent that (a) Term SOFR has been recommended for use by the Relevant Governmental Body, (b) the administration of Term SOFR is administratively feasible for the Administrative Agent and (c) a Benchmark Transition Event (LIBOR) or an Early Optin Election, as applicable, has previously occurred resulting in the replacement of the then-current Benchmark for all purposes hereunder and under any Loan Document in accordance with Section 5.8(c) with a Benchmark Replacement (LIBOR) the Unadjusted Benchmark Replacement component of which is not Term SOFR.

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“Termination Event” means the occurrence of any of the following which, individually or in the aggregate, has resulted or could reasonably be expected to result in liability of the US Borrowers or any of their respective Subsidiaries in an aggregate amount in excess of the Threshold Amount: (a) a “Reportable Event” described in Section 4043 of ERISA for which the thirty (30) day notice requirement has not been waived by the PBGC, or (b) the withdrawal of any Credit Party or any ERISA Affiliate from a Pension Plan during a plan year in which it was a “substantial employer” as defined in Section 4001(a)(2) of ERISA or a cessation of operations that is treated as such a withdrawal under Section 4062(e) of ERISA, or (c) the termination of a Pension Plan, the filing of a notice of intent to terminate a Pension Plan or the treatment of a Pension Plan amendment as a termination, under Section 4041 of ERISA, if the plan assets are not sufficient to pay all plan liabilities, or (d) the institution of proceedings to terminate, or the appointment of a trustee with respect to, any Pension Plan by the PBGC, or (e) any other event or condition which would constitute grounds under Section 4042(a) of ERISA for the termination of, or the appointment of a trustee to administer, any Pension Plan, or (f) the imposition of a Lien pursuant to Section 430(k) of the Code or Section 303 of ERISA, or (g) the determination that any Pension Plan or Multiemployer Plan is considered an at-risk plan or plan in endangered or critical status with the meaning of Sections 430, 431 or 432 of the Code or Sections 303, 304 or 305 of ERISA or (h) the partial or complete withdrawal of any Credit Party or any ERISA Affiliate from a Multiemployer Plan if withdrawal liability is asserted by such plan, or (i) any event or condition which results in the reorganization or insolvency of a Multiemployer Plan under Sections 4241 or 4245 of ERISA, or (j) any event or condition which results in the termination of a Multiemployer Plan under Section 4041A of ERISA or the institution by PBGC of proceedings to terminate a Multiemployer Plan under Section 4042 of ERISA, or (k) the imposition of any liability under Title IV of ERISA, other than for PBGC premiums due but not delinquent under Section 4007 of ERISA, upon any Credit Party or any ERISA Affiliate.

“Threshold Amount” means $35,000,000.

“Total Credit Exposure” means, as to any Lender at any time, the unused Commitments, Revolving Credit Exposure and outstanding Term Loans of such Lender at such time.

“Transactions” means, collectively, (a) the refinancing of Indebtedness outstanding under the Existing Credit Agreement, (b) the refinancing of certain Indebtedness of Drum and its Subsidiaries, (c) the initial Extensions of Credit, (d) the financing of the Drum Acquisition and (e) the payment of the costs incurred in connection with the foregoing.

“UCC” means the Uniform Commercial Code as in effect in the State of New York.

“UK Financial Institution” means any BRRD Undertaking (as such term is defined under the PRA Rulebook (as amended from time to time) promulgated by the United Kingdom Prudential Regulation Authority) or any person falling within IFPRU 11.6 of the FCA Handbook (as amended from time to time) promulgated by the United Kingdom Financial Conduct Authority, which includes certain credit institutions and investment firms, and certain affiliates of such credit institutions or investment firms.

“UK Resolution Authority” means the Bank of England or any other public administrative authority having responsibility for the resolution of any UK Financial Institution.

“Unadjusted Benchmark Replacement” means the applicable Benchmark Replacement excluding the related Benchmark Replacement Adjustment.

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“Uniform Customs” means the Uniform Customs and Practice for Documentary Credits (2007 Revision), effective July, 2007 International Chamber of Commerce Publication No. 600.

“United States” means the United States of America.

“Unrestricted” shall mean, when referring to cash and Cash Equivalents of Centuri and its Subsidiaries, that such cash and Cash Equivalents (a) do not appear or would not be required to appear as “restricted” on the financial statements of Centuri or any such Subsidiary (unless related to the Loan Documents or the Liens created thereunder), (b) are not subject to a Lien in favor of any Person other than the Administrative Agent under the Loan Documents, (c) are assets of Centuri or a Subsidiary that is a US Subsidiary and are held in bank accounts or securities accounts located in the United States or (d) are not otherwise unavailable to Centuri or such Subsidiary.

“USD LIBOR” means the London interbank offered rate for Dollars.

“US Borrowers” means, collectively, Centuri and each Additional Borrower approved by the Lenders that becomes a party hereto as a US Borrower.

“US Cash Management Bank” means any Person that, (a) at the time it enters into a Cash Management Agreement with a US Credit Party or any US Subsidiary thereof, is a Lender, an Affiliate of a Lender, the Administrative Agent or an Affiliate of the Administrative Agent, or (b) at the time it (or its Affiliate) becomes a Lender (including on the Closing Date), is a party to a Cash Management Agreement with a US Credit Party or any US Subsidiary thereof, in each case in its capacity as a party to such Cash Management Agreement.

“US Collateral Agreement” means that certain Second Amended and Restated US Collateral Agreement of even date herewith executed by the US Credit Parties in favor of the Administrative Agent, for the ratable benefit of the US Secured Parties and the Canadian Secured Parties.

“US Credit Parties” means, collectively, the US Borrowers and the US Subsidiary Guarantors.

“US Credit Party Guaranty Agreement” means that certain Second Amended and Restated US Credit Party Guaranty Agreement of even date herewith executed by the US Credit Parties in favor of the Administrative Agent, for the ratable benefit of the US Secured Parties and the Canadian Secured Parties.

“US Government Securities Business Day” means any day except for (a) a Saturday, (b) a Sunday or (c) a day on which the Securities Industry and Financial Markets Association recommends that the fixed income departments of its members be closed for the entire day for purposes of trading in United States government securities; provided, that for purposes of notice requirements in Sections 2.3(a), 2.4(c) and 5.2, in each case, such day is also a Business Day.

“US Hedge Bank” means any Person that, (a) at the time it enters into a Hedge Agreement with a US Credit Party or any US Subsidiary thereof permitted under Article IX, is a Lender, an Affiliate of a Lender, the Administrative Agent or an Affiliate of the Administrative Agent or (b) at the time it (or its Affiliate) becomes a Lender (including on the Closing Date), is a party to a Hedge Agreement with a US Credit Party or any US Subsidiary thereof, in each case in its capacity as a party to such Hedge Agreement.

“US L/C Obligations” means at any time, an amount equal to the sum of (a) the aggregate undrawn and unexpired amount of the then outstanding US Letters of Credit and (b) the aggregate amount of drawings under US Letters of Credit which have not then been reimbursed pursuant to Section 3.5.

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“US Letters of Credit” means the collective reference to letters of credit denominated in Dollars pursuant to Section 3.1 (including any applicable Existing Letters of Credit). Notwithstanding anything to the contrary contained herein, a letter of credit issued by any Issuing Lender (other than ▇▇▇▇▇ Fargo at any time it is also acting as Administrative Agent) shall not be a “US Letter of Credit” for purposes of the Loan Documents until such time as the Administrative Agent has been notified in writing of the issuance thereof by the applicable Issuing Lender.

“US Obligations” means, in each case, whether now in existence or hereafter arising: (a) the principal of and interest on (including interest accruing after the filing of any bankruptcy or similar petition) the Loans (other than the Canadian Revolving Credit Loans, the Canadian Swingline Loans and, to the extent applicable, any Incremental Term Loan made to the Canadian Borrowers), (b) the US L/C Obligations and (c) all other fees and commissions (including attorneys’ fees), charges, indebtedness, loans, liabilities, financial accommodations, obligations, covenants and duties owing by the US Credit Parties to the Lenders, the Issuing Lenders or the Administrative Agent, in each case under any Loan Document, with respect to any Loan (other than any Canadian Revolving Credit Loan, any Canadian Swingline Loan and, to the extent applicable, any Incremental Term Loan made to the Canadian Borrowers) or any US Letter of Credit of every kind, nature and description, direct or indirect, absolute or contingent, due or to become due, contractual or tortious, liquidated or unliquidated, and whether or not evidenced by any note and including interest and fees that accrue after the commencement by or against any Credit Party or any Affiliate thereof of any proceeding under any Debtor Relief Laws, naming such Person as the debtor in such proceeding, regardless of whether such interest and fees are allowed claims in such proceeding.

“U.S. Person” means any Person that is a “United States person” as defined in Section 7701(a)(30) of the Code.

“US Revolving Credit Loans” means any revolving loan denominated in Dollars made to the US Borrowers pursuant to Section 2.1, and all such revolving loans collectively as the context requires, and shall include any Extended Revolving Credit Loans, any Refinancing Revolving Loans and any loans made pursuant to an Incremental Revolving Credit Facility Increase, in each case, related to such loans.

“US Revolving Credit Note” means a promissory note made by the US Borrowers in favor of a Revolving Credit Lender evidencing the Revolving Credit Loans made by such Revolving Credit Lender, substantially in the form attached as Exhibit A-1, and any substitutes therefor, and any replacements, restatements, renewals or extension thereof, in whole or in part.

“US Secured Obligations” means, collectively, (a) the US Obligations and (b) all existing or future payment and other obligations owing by any US Credit Party or any US Subsidiary thereof under (i) any Secured Hedge Agreement with a US Hedge Bank and (ii) any Secured Cash Management Agreement with a US Cash Management Bank.

“US Secured Parties” means, collectively, the Administrative Agent, the Lenders, the Issuing Lenders, the US ▇▇▇▇▇ ▇▇▇▇▇, the US Cash Management Banks, each co-agent or sub-agent appointed by the Administrative Agent from time to time pursuant to Section 12.5, any other holder from time to time of any US Secured Obligations and, in each case, their respective successors and permitted assigns.

“US Subsidiary” means any Subsidiary that is organized under the laws of the United States, any State thereof or the District of Columbia.

“US Subsidiary Guarantors” means, collectively, all US Subsidiaries in existence on the Closing Date or which become parties to the US Credit Party Guaranty Agreement pursuant to Section 8.14.

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“US Swingline Loan” means any swingline loan denominated in Dollars made by the applicable Swingline Lender to a US Borrower pursuant to Section 2.2, and all such swingline loans collectively as the context requires.

“US Swingline Note” means a promissory note made by the US Borrowers in favor of the applicable Swingline Lender evidencing the Swingline Loans made by the applicable Swingline Lender, substantially in the form attached as Exhibit A-3, and any substitutes therefor, and any replacements, restatements, renewals or extension thereof, in whole or in part.

“U.S. Tax Compliance Certificate” has the meaning assigned thereto in Section 5.11(g).

“US Term Loan Note” means a promissory note made by the US Borrowers in favor of a Term Loan Lender evidencing the portion of the Term Loans made by such Term Loan Lender to the US Borrowers, substantially in the form attached as Exhibit A-5, and any substitutes therefor, and any replacements, restatements, renewals or extensions thereof, in whole or in part.

“Weighted Average Life to Maturity” means, when applied to any Indebtedness at any date, the number of years obtained by dividing: (a) the sum of the products obtained by multiplying (i) the amount of each then remaining installment, sinking fund, serial maturity or other required payments of principal, including payment at final maturity, in respect thereof, by (ii) the number of years (calculated to the nearest one-twelfth) that will elapse between such date and the making of such payment; by (b) the then outstanding principal amount of such Indebtedness, in each case of clauses (a) and (b), without giving effect to the application of any prior prepayment to such installment, sinking fund, serial maturity or other required payment of principal.

“▇▇▇▇▇ Fargo” means ▇▇▇▇▇ Fargo Bank, National Association, a national banking association.

“Wholly-Owned” means, with respect to a Subsidiary, that all of the Equity Interests of such Subsidiary are, directly or indirectly, owned or controlled by Centuri and/or one or more of its Wholly- Owned Subsidiaries (except for directors’ qualifying shares or other shares required by Applicable Law to be owned by a Person other than Centuri and/or one or more of its Wholly-Owned Subsidiaries).

“Withholding Agent” means any Credit Party and the Administrative Agent.

“Working Capital” means, for Centuri and its Subsidiaries on a Consolidated basis and calculated in accordance with GAAP, as of any date of determination, the excess of (a) current assets (other than cash, Cash Equivalents, taxes and deferred taxes) over (b) current liabilities, excluding, without duplication, (i) the current portion of any long-term Indebtedness, (ii) outstanding Revolving Credit Loans and Swingline Loans, (iii) the current portion of current taxes and deferred income taxes and (iv) the current portion of accrued Consolidated Interest Expense.

“Write-Down and Conversion Powers” means (a) with respect to any EEA Resolution Authority, the write-down and conversion powers of such EEA Resolution Authority from time to time under the Bail- In Legislation for the applicable EEA Member Country, which write-down and conversion powers are described in the EU Bail-In Legislation Schedule and (b) with respect to the United Kingdom, any powers of the applicable Resolution Authority under the Bail-In Legislation to cancel, reduce, modify or change the form of a liability of any UK Financial Institution or any contract or instrument under which that liability arises, to convert all or part of that liability into shares, securities or obligations of that person or any other person, to provide that any such contract or instrument is to have effect as if a right had been exercised under it or to suspend any obligation in respect of that liability or any of the powers under that Bail-In Legislation that are related to or ancillary to any of those powers.

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SECTION 1.2 Other Definitions and Provisions

. With reference to this Agreement and each other Loan Document, unless otherwise specified herein or in such other Loan Document: (a) the definitions of terms herein shall apply equally to the singular and plural forms of the terms defined, (b) whenever the context may require, any pronoun shall include the corresponding masculine, feminine and neuter forms, (c) the words “include”, “includes” and “including” shall be deemed to be followed by the phrase “without limitation”, (d) the word “will” shall be construed to have the same meaning and effect as the word “shall”, (e) any reference herein to any Person shall be construed to include such Person’s successors and assigns, (f) the words “herein”, “hereof” and “hereunder”, and words of similar import, shall be construed to refer to this Agreement in its entirety and not to any particular provision hereof, (g) all references herein to Articles, Sections, Exhibits and Schedules shall be construed to refer to Articles and Sections of, and Exhibits and Schedules to, this Agreement, (h) the words “asset” and “property” shall be construed to have the same meaning and effect and to refer to any and all tangible and intangible assets and properties, including cash, securities, accounts and contract rights, (i) the term “documents” includes any and all instruments, documents, agreements, certificates, notices, reports, financial statements and other writings, however evidenced, whether in physical or electronic form and (j) in the computation of periods of time from a specified date to a later specified date, the word “from” means “from and including;” the words “to” and “until” each mean “to but excluding;” and the word “through” means “to and including”.

SECTION 1.3 Accounting Terms.

(r) All accounting terms not specifically or completely defined herein shall be construed in conformity with, and all financial data (including financial ratios and other financial calculations) required to be submitted pursuant to this Agreement shall be prepared in conformity with GAAP, applied on a consistent basis, as in effect from time to time and in a manner consistent with that used in preparing the audited financial statements required by Section 8.1(a), except as otherwise specifically prescribed herein. Notwithstanding the foregoing, for purposes of determining compliance with any covenant (including the computation of any financial covenant) contained herein, Indebtedness of the Consolidated Companies shall be deemed to be carried at 100% of the outstanding principal amount thereof, and the effects of FASB ASC 825 and FASB ASC 470-20 on financial liabilities shall be disregarded.

(s) If at any time any change in GAAP would affect the computation of any financial ratio or requirement set forth in any Loan Document, and either the Borrowers or the Required Lenders shall so request, the Administrative Agent, the Lenders and the Borrowers shall negotiate in good faith to amend such ratio or requirement to preserve the original intent thereof in light of such change in GAAP (subject to the approval of the Required Lenders); provided that, until so amended, (i) such ratio or requirement shall continue to be computed in accordance with GAAP prior to such change therein and (ii) the Borrowers shall provide to the Administrative Agent and the Lenders financial statements and other documents required under this Agreement or as reasonably requested hereunder setting forth a reconciliation between calculations of such ratio or requirement made before and after giving effect to such change in GAAP; provided, further that all obligations of any Person that are or would have been treated as operating leases for purposes of GAAP prior to the effectiveness of FASB ASC 842 shall continue to be accounted for as operating leases for purposes of all financial definitions and calculations for purpose of this Agreement (whether or not such operating lease obligations were in effect on such date) notwithstanding the fact that such obligations are required in accordance with FASB ASC 842 (on a prospective or retroactive basis or otherwise) to be treated as Capital Lease Obligations in the financial statements.

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SECTION 1.4 UCC and PPSA Terms

. Terms defined in the UCC and/or the PPSA in effect on the Closing Date and not otherwise defined herein shall, unless the context otherwise indicates, have the meanings provided in the UCC and/or the PPSA, as applicable; provided that if any term is defined in both the UCC and the PPSA and not otherwise defined herein, such term shall have the meaning provided in the UCC. Subject to the foregoing, the term “UCC” and “PPSA” refers, as of any date of determination, to the UCC or PPSA then in effect.

SECTION 1.5 Rounding

. Any financial ratios required to be maintained pursuant to this Agreement shall be calculated by dividing the appropriate component by the other component, carrying the result to one place more than the number of places by which such ratio or percentage is expressed herein and rounding the result up or down to the nearest number (with a rounding-up if there is no nearest number).

SECTION 1.6 References to Agreement and Laws

. Unless otherwise expressly provided herein, (a) any definition or reference to formation documents, governing documents, agreements (including the Loan Documents) and other contractual documents or instruments shall be deemed to include all subsequent amendments, restatements, extensions, supplements and other modifications thereto, but only to the extent that such amendments, restatements, extensions, supplements and other modifications are not prohibited by any Loan Document; and (b) any definition or reference to any Applicable Law, including, without limitation, the Code, the Commodity Exchange Act, ERISA, the Exchange Act, the PATRIOT Act, the Securities Act, the UCC, the PPSA, the Investment Company Act, the Interstate Commerce Act, the Trading with the Enemy Act of the United States or any of the foreign assets control regulations of the United States Treasury Department, shall include all statutory and regulatory provisions consolidating, amending, replacing, supplementing or interpreting such Applicable Law.

SECTION 1.7 Times of Day

. Unless otherwise specified, all references herein to times of day shall be references to Eastern time (daylight or standard, as applicable).

SECTION 1.8 Letter of Credit Amounts

(a) Unless otherwise specified, all references herein to the amount of a Letter of Credit at any time shall be deemed to mean the maximum face amount of such Letter of Credit after giving effect to all increases thereof contemplated by such Letter of Credit or the Letter of Credit Application therefor (at the time specified therefor in such applicable Letter of Credit or Letter of Credit Application and as such amount may be reduced by (i) any permanent reduction of such Letter of Credit or (ii) any amount which is drawn, reimbursed and no longer available under such Letter of Credit).

(b) For purposes of Articles II, III and V, the applicable outstanding amount of all Canadian Letters of Credit and Canadian L/C Obligations shall be deemed to refer to the Dollar Amount thereof.

SECTION 1.9 Guarantees/Earn-Outs

. Unless otherwise specified, (a) the amount of any Guarantee shall be the lesser of the amount of the obligations guaranteed and still outstanding and the maximum amount for which the guaranteeing Person may be liable pursuant to the terms of the instrument embodying such Guarantee and (b) the amount of any earn-out or similar obligation shall be the amount of such obligation as reflected on the balance sheet of such Person in accordance with GAAP. earn-out or similar obligation shall be the amount of such obligation as reflected on the balance sheet of such Person in accordance with GAAP.

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SECTION 1.10 Alternative Currency Matters

(a) Covenant Compliance Generally. For purposes of determining compliance under Sections 9.1, 9.2, 9.3, 9.5 and 9.6, any amount in a currency other than Dollars will be converted to Dollars in a manner consistent with that used in calculating Consolidated Net Income in the most recent annual financial statements of the Consolidated Companies delivered pursuant to Section 8.1(a). Notwithstanding the foregoing, for purposes of determining compliance with Sections 9.1, 9.2 and 9.3, with respect to any amount of Indebtedness or Investment in a currency other than Dollars, no breach of any basket contained in such sections shall be deemed to have occurred solely as a result of changes in rates of exchange occurring after the time such Indebtedness or Investment is incurred; provided that for the avoidance of doubt, the foregoing provisions of this Section 1.10 shall otherwise apply to such Sections, including with respect to determining whether any Indebtedness or Investment may be incurred at any time under such Sections.

(b) Amount of Obligations. Unless otherwise specified, for purposes of this Agreement, any determination of the amount of any outstanding Canadian Revolving Credit Loans, Canadian Swingline Loans, Incremental Term Loans denominated in Canadian Dollars or Canadian Obligations shall be based upon the Dollar Amount of such Canadian Revolving Credit Loans, Canadian Swingline Loans, Incremental Term Loans denominated in Canadian Dollars or Canadian Obligations, as the case may be.

(c) Exchange Rates. The Administrative Agent shall determine the Spot Rates as of each Revaluation Date to be used for calculating Dollar Amount of any Extensions of Credit and Revolving Credit Outstandings denominated in Canadian Dollars. Such Spot Rates shall become effective as of such Revaluation Date and shall be the Spot Rates employed in converting any amounts between the applicable currencies until the next Revaluation Date to occur.

SECTION 1.11 Rates

. The interest rate on LIBOR Rate Loans and Base Rate Loans (when determined by reference to clause (c) of the definition of Base Rate) may be determined by reference to LIBOR, which is derived from the London interbank offered rate. The London interbank offered rate is intended to represent the rate at which contributing banks may obtain short-term borrowings from each other in the London interbank market. On March 5, 2021, ICE Benchmark Administration (“IBA”), the administrator of the London interbank offered rate, and the Financial Conduct Authority (the “FCA”), the regulatory supervisor of IBA, announced in public statements (the “Announcements”) that the final publication or representativeness date for the London interbank offered rate for Dollars for: (a) 1-week and 2-month tenor settings will be December 31, 2021 and (b) overnight, 1-month, 3-month, 6-month and 12-month tenor settings will be June 30, 2023. No successor administrator for IBA was identified in such Announcements. As a result, it is possible that commencing immediately after such dates, the London interbank offered rate for such tenors may no longer be available or may no longer be deemed a representative reference rate upon which to determine the interest rate on LIBOR Rate Loans or Base Rate Loans (when determined by reference to clause (c) of the definition of Base Rate). There is no assurance that the dates set forth in the Announcements will not change or that IBA or the FCA will not take further action that could impact the availability, composition or characteristics of any London interbank offered rate. Public and private sector industry initiatives have been and continue, as of the date hereof, to be underway to implement new or alternative reference rates to

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be used in place of the London interbank offered rate. In the event that the London interbank offered rate or any other then-current Benchmark is no longer available or in certain other circumstances set forth in Section 5.8(c), such Section 5.8(c) provides a mechanism for determining an alternative rate of interest. The Administrative Agent will notify Centuri, pursuant to Section 5.8(c), of any change to the reference rate upon which the interest rate on LIBOR Rate Loans and Base Rate Loans (when determined by reference to clause (c) of the definition of Base Rate) is based. However, the Administrative Agent does not warrant or accept any responsibility for, and shall not have any liability with respect to, (i) the continuation of, administration of, submission of, calculation of or any other matter related to the Term SOFR Reference Rate, Adjusted Terms SOFR, Term SOFR, the London interbank offered rate or other rates in theany such definition of “LIBOR”or with respect to any alternative, successor or replacement rate thereto (including any then-current Benchmark or any Benchmark Replacement), including whether the composition or characteristics of any such alternative, successor or replacement rate (including any Benchmark Replacement), as it may or may not be adjusted pursuant to Section 5.8(c), will be similar to, or produce the same value or economic equivalence of, LIBOR or any other Benchmark, or have the same volume or liquidity as did the Term SOFR Reference Rate, Adjusted Term SOFR, Term SOFR or the London interbank offered rate or any other Benchmark prior to its discontinuance or unavailability, or (ii) the effect, implementation or composition of any Benchmark Replacement Conforming Changes. The Administrative Agent and its Affiliates or other related entities may engage in transactions that affect the calculation of athe Term SOFR Reference Rate, Adjusted Term SOFR, Term SOFR, any other Benchmark, or any alternative, successor or replacement rate (including any Benchmark Replacement) or any relevant adjustments thereto and such transactions may be adverse to the Borrowers. The Administrative Agent may select information sources or services in its reasonable discretion to ascertain the Term SOFR Reference Rate, Adjusted Term SOFR, Term SOFR, or any other Benchmark, any component definition thereof or rates referenced in the definition thereof, in each case pursuant to the terms of this Agreement, and shall have no liability to the Borrowers, any Lender or any other person or entity for damages of any kind, including direct or indirect, special, punitive, incidental or consequential damages, costs, losses or expenses (whether in tort, contract or otherwise and whether at law or in equity), for any error or calculation of any such rate (or component thereof) provided by any such information source or service.

SECTION 1.12 Limited Condition Acquisitions

. In the event that Centuri notifies the Administrative Agent in writing that any proposed Acquisition is a Limited Condition Acquisition and that Centuri wishes to test the conditions to such Acquisition and any Incremental Term Loan or Incremental Equivalent Indebtedness that is to be used to finance such Acquisition in accordance with this Section 1.12, then, so long as agreed to by the Administrative Agent and the lenders providing such Incremental Term Loan or such Incremental Equivalent Indebtedness, the following provisions shall apply:

(t) any condition to such Limited Condition Acquisition, such Incremental Term Loan or such Incremental Equivalent Indebtedness that requires that no Default or Event of Default shall have occurred and be continuing at the time of such Limited Condition Acquisition or the incurrence of such Incremental Term Loan or Incremental Equivalent Indebtedness, shall be satisfied if (i) no Default or Event of Default shall have occurred and be continuing at the time of the execution of the definitive purchase agreement, merger agreement or other acquisition agreement governing such Limited Condition Acquisition (the “LCA Test Date”) and (ii) no Event of Default under any of Section 10.1(a), 10.1(b), 10.1(i) or 10.1(j) shall have occurred and be continuing both immediately before and immediately after giving effect to such Limited Condition Acquisition and any Indebtedness incurred in connection therewith (including any such additional Incremental Term Loan or Incremental Equivalent Indebtedness);

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(u) any condition to such Limited Condition Acquisition, such Incremental Term Loan or such Incremental Equivalent Indebtedness that the representations and warranties in this Agreement and the other Loan Documents shall be true and correct at the time of consummation of such Limited Condition Acquisition or the incurrence of such Incremental Term Loan or Incremental Equivalent Indebtedness shall be deemed satisfied if (i) all representations and warranties in this Agreement and the other Loan Documents are true and correct in all material respects (except for any representation and warranty that is qualified by materiality or reference to Material Adverse Effect, which such representation and warranty shall be true and correct in all respects) as of the LCA Test Date, or if such representation speaks as of an earlier date, as of such earlier date and (ii) as of the date of consummation of such Limited Condition Acquisition, (A) the representations and warranties under the relevant definitive agreement governing such Limited Condition Acquisition as are material to the lenders providing such Incremental Term Loan or Incremental Equivalent Indebtedness shall be true and correct, but only to the extent that Centuri or its applicable Subsidiary has the right to terminate its obligations under such agreement or otherwise decline to close such Limited Condition Acquisition as a result of a breach of such representations and warranties or the failure of those representations and warranties to be true and correct and (B) certain of the representations and warranties in this Agreement and the other Loan Documents which are customary for similar “funds certain” financings and required by the lenders providing such Incremental Term Loan or Incremental Equivalent Indebtedness shall be true and correct in all material respects (except for any representation and warranty that is qualified by materiality or reference to Material Adverse Effect, which such representation and warranty shall be true and correct in all respects);

(v) any financial ratio test or condition to be tested in connection with such Limited Condition Acquisition and the availability of such Incremental Term Loan or Incremental Equivalent Indebtedness will be tested as of the LCA Test Date, in each case, after giving effect to the relevant Limited Condition Acquisition and related incurrence of Incremental Term Loan or Incremental Equivalent Indebtedness, on a Pro Forma Basis where applicable, and, for the avoidance of doubt, (i) such ratios and baskets shall not be tested at the time of consummation of such Limited Condition Acquisition and (ii) if any of such ratios are exceeded or conditions are not met following the LCA Test Date, but prior to the closing of such Limited Condition Acquisition, as a result of fluctuations in such ratio or amount (including due to fluctuations in Consolidated EBITDA of Centuri or the Person subject to such Limited Condition Acquisition), at or prior to the consummation of the relevant transaction or action, such ratios will not be deemed to have been exceeded and such conditions will not be deemed unmet as a result of such fluctuations solely for purposes of determining whether the relevant transaction or action is permitted to be consummated or taken;

(w) except as provided in the next sentence, in connection with any subsequent calculation of any ratio or basket on or following the relevant LCA Test Date and prior to the earlier of the date on which such Limited Condition Acquisition is consummated and the date that the definitive agreement for such Limited Condition Acquisition is terminated or expires without consummation of such Limited Condition Acquisition, any such ratio or basket shall be calculated on a Pro Forma Basis assuming such Limited Condition Acquisition and other transactions in connection therewith (including the incurrence or assumption of the applicable Incremental Term Loan, Incremental Equivalent Indebtedness or any other applicable Indebtedness) have been consummated; provided that any calculation of any such ratio or basket under Section 9.6 and Section 9.9 shall be calculated (i) on a Pro Forma Basis assuming such Limited Condition Acquisition and other transactions in connection therewith (including the incurrence or assumption of the applicable Incremental Term Loan, Incremental Equivalent Indebtedness or any other applicable Indebtedness) have been consummated and (ii) assuming such Limited Condition Acquisition and other transactions in connection therewith (including the incurrence or assumption of the applicable Incremental Term Loan, Incremental Equivalent Indebtedness or any other applicable Indebtedness) have not been consummated. Notwithstanding the foregoing, any calculation of a ratio in connection with determining the Applicable Margin and determining whether or not the Borrower is in compliance with the

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financial covenants set forth in Section 9.13 shall, in each case be calculated assuming such Limited Condition Acquisition and other transactions in connection therewith (including the incurrence or assumption of the applicable Incremental Term Loan, Incremental Equivalent Indebtedness or any other applicable Indebtedness to be incurred or assumed in connection with such Acquisition) have not been consummated.

The foregoing provisions shall apply with similar effect during the pendency of multiple Limited Condition Acquisitions such that each of the possible scenarios is separately tested.

SECTION 1.13 Divisions

. For all purposes under the Loan Documents, in connection with any division or plan of division under Delaware law (or any comparable event under a different jurisdiction’s laws): (a) if any asset, right, obligation or liability of any Person becomes the asset, right, obligation or liability of a different Person, then it shall be deemed to have been transferred from the original Person to the subsequent Person, and (b) if any new Person comes into existence, such new Person shall be deemed to have been organized on the first date of its existence by the holders of its Equity Interests at such time.

ARTICLE II

REVOLVING CREDIT FACILITY

SECTION 2.1 Revolving Credit Loans

. Subject to the terms and conditions of this Agreement and the other Loan Documents, and in reliance upon the representations and warranties set forth in this Agreement and the other Loan Documents, each Revolving Credit Lender severally agrees to make (a) US Revolving Credit Loans to the US Borrowers and (b) Canadian Revolving Credit Loans to the Canadian Borrowers, in each case, from time to time from the Closing Date through, but not including, the Revolving Credit Maturity Date as requested by a US Borrower or a Canadian Borrower, as applicable, in accordance with the terms of Section 2.3; provided, that, (i) on the Closing Date, the aggregate Revolving Credit Outstandings, excluding the aggregate undrawn and unexpired amount of the Existing Letters of Credit, shall not exceed $125,000,000, (ii) after the Closing Date, (A) the Revolving Credit Outstandings shall not exceed the Revolving Credit Commitment and (B) the Revolving Credit Exposure of any Revolving Credit Lender shall not at any time exceed such Revolving Credit Lender’s Revolving Credit Commitment. Each Revolving Credit Loan by a Revolving Credit Lender shall be in a principal amount equal to such Revolving Credit Lender’s Revolving Credit Commitment Percentage of the aggregate principal amount of Revolving Credit Loans requested on such occasion. Subject to the terms and conditions hereof, the Borrowers may borrow, repay and reborrow Revolving Credit Loans hereunder until the Revolving Credit Maturity Date.

SECTION 2.2 Swingline Loans.

(x) Availability. Subject to the terms and conditions of this Agreement and the other Loan Documents, and in reliance upon the representations and warranties set forth in this Agreement and the other Loan Documents, (a) the Swingline Lender shall make US Swingline Loans to the US Borrowers and (y) the Swingline Lender shall make Canadian Swingline Loans to the Canadian Borrowers, in each case, from time to time from the Closing Date through, but not including, the Revolving Credit Maturity Date; provided, that (i) after giving effect to any amount requested, the Revolving Credit Outstandings shall not exceed the Revolving Credit Commitment and (ii) the aggregate principal amount of all outstanding Swingline Loans (after giving effect to any amount requested), shall not exceed the Swingline Commitment.

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(a) Refunding.

(i) Swingline Loans shall be refunded by the Revolving Credit Lenders on demand by the applicable Swingline Lender. Such refundings shall be made by the Revolving Credit Lenders in accordance with their respective Revolving Credit Commitment Percentages, in the applicable currency of the underlying Swingline Loan, and shall thereafter be reflected as Revolving Credit Loans of the Revolving Credit Lenders on the books and records of the Administrative Agent. Each Revolving Credit Lender shall fund its respective Revolving Credit Commitment Percentage of such Revolving Credit Loans as required to repay Swingline Loans outstanding to the applicable Swingline Lender upon demand by such Swingline Lender but in no event later than 1:00 p.m. on the next succeeding Business Day after such demand is made. No Revolving Credit Lender’s obligation to fund its respective Revolving Credit Commitment Percentage of a Swingline Loan shall be affected by any other Revolving Credit Lender’s failure to fund its Revolving Credit Commitment Percentage of a Swingline Loan, nor shall any Revolving Credit Lender’s Revolving Credit Commitment Percentage be increased as a result of any such failure of any other Revolving Credit Lender to fund its Revolving Credit Commitment Percentage of a Swingline Loan.

(ii) The applicable Borrower shall pay to the applicable Swingline Lender on demand and, in any event on the Revolving Credit Maturity Date, the amount of such Swingline Loans made to such Borrower to the extent amounts received from the Revolving Credit Lenders are not sufficient to repay in full the outstanding Swingline Loans requested or required to be refunded. If not demanded by such Swingline Lender, each Canadian Swingline Loan shall be repaid by the applicable Canadian Borrower on the date that is five (5) Business Days after such Canadian Swingline Loan is made. In addition, each Borrower hereby authorizes the Administrative Agent to charge any account maintained by such Borrower with the applicable Swingline Lender (up to the amount available therein) in order to immediately pay the applicable Swingline Lender the amount of such Swingline Loans made to such Borrower to the extent amounts received from the Revolving Credit Lenders are not sufficient to repay in full the outstanding Swingline Loans requested or required to be refunded. If any portion of any such amount paid to the applicable Swingline Lender shall be recovered by or on behalf of any Borrower from the applicable Swingline Lender in bankruptcy or otherwise, the loss of the amount so recovered shall be ratably shared among all the Revolving Credit Lenders in accordance with their respective Revolving Credit Commitment Percentages (unless the amounts so recovered by or on behalf of such Borrower pertain to a Swingline Loan extended after the occurrence and during the continuance of an Event of Default of which the Administrative Agent has received notice in the manner required pursuant to Section 11.3 and which such Event of Default has not been waived by the Required Lenders or the Lenders, as applicable).

(iii) Each Revolving Credit Lender acknowledges and agrees that its obligation to refund Swingline Loans in accordance with the terms of this Section is absolute and unconditional and shall not be affected by any circumstance whatsoever, including, without limitation, non-satisfaction of the conditions set forth in Article VI. Further, each Revolving Credit Lender agrees and acknowledges that if prior to the refunding of any outstanding Swingline Loans pursuant to this Section, one of the events described in Section 10.1(i) or (j) shall have occurred, each Revolving Credit Lender will, on the date the applicable Revolving Credit Loan would have been made, purchase an undivided participating interest in the Swingline Loan to be refunded in an amount equal to its Revolving Credit Commitment Percentage of the aggregate amount of such Swingline Loan. Each Revolving Credit Lender will immediately transfer to the applicable Swingline Lender, in immediately available funds, the amount of its participation and upon receipt thereof such Swingline Lender will deliver to such Revolving Credit Lender a certificate evidencing

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such participation dated the date of receipt of such funds and for such amount. Whenever, at any time after the applicable Swingline Lender has received from any Revolving Credit Lender such Revolving Credit Lender’s participating interest in a Swingline Loan, the applicable Swingline Lender receives any payment on account thereof, the applicable Swingline Lender will distribute to such Revolving Credit Lender its participating interest in such amount (appropriately adjusted, in the case of interest payments, to reflect the period of time during which such Revolving Credit Lender’s participating interest was outstanding and funded).

(a) Defaulting Lenders. Notwithstanding anything to the contrary contained in this Agreement, this Section 2.2 shall be subject to the terms and conditions of Section 5.14 and Section 5.15.

(b) Resignation of Swingline Lender. In connection with (i) any Refinancing Revolving Credit Commitments or (ii) any Extension of Revolving Credit Commitments, that has not been consented to by the applicable Swingline Lender, such Swingline Lender may, in connection with such Refinancing Revolving Credit Commitments or Extension resign as a Swingline Lender hereunder upon not less than five (5) Business Days’ prior notice to Centuri and the Administrative Agent (or such shorter period of time as may be acceptable to Centuri and the Administrative Agent). Following such notice of resignation, such Swingline Lender shall have no further obligations to make Swingline Loans pursuant to this Agreement.

SECTION 2.3 Procedure for Advances of Revolving Credit Loans and Swingline Loans.

(a) Requests for Borrowing. The applicable Borrower shall give the Administrative Agent irrevocable prior written notice substantially in the form of Exhibit B (a “Notice of Borrowing”) not later than 11:00 a.m. (i) on the same Business Day as each Base Rate Loan, each US Swingline Loan and each Canadian Swingline Loan, (ii) at least one (1) Business Day before each Canadian Base Rate Loan (other than Canadian Swingline Loans), (iii) at least three (3) US Government Securities Business Days before each LIBOR RateSOFR Loan and (iv) at least four (4) Business Days before each CDOR Rate Loan, of its intention to borrow, specifying (A) the date of such borrowing, which shall be a Business Day, (B) the amount of such borrowing, which shall be, (x) with respect to Base Rate Loans (other than Swingline Loans) and Canadian Revolving Credit Loans in an aggregate principal amount of $2,000,000 (or C$2,000,000) or a whole multiple of $500,000 (or C$500,000) in excess thereof, (y) with respect to LIBOR RateSOFR Loans, in an aggregate principal amount of $2,000,000 or a whole multiple of $500,000 in excess thereof and (z) with respect to Swingline Loans in an aggregate principal amount of $500,000 (or C$500,000) or a whole multiple of $100,000 (or C$100,000) in excess thereof, (C) whether such Loan is to be a US Revolving Credit Loan, Canadian Revolving Credit Loan, US Swingline Loan or Canadian Swingline Loan, (D) in the case of a US Revolving Credit Loan, whether the Loans are to be LIBOR RateSOFR Loans or Base Rate Loans, (E) in the case of a Canadian Revolving Credit Loan, whether the Loans are to be CDOR Rate Loans or Canadian Base Rate Loans, and (F) in the case of a LIBOR RateSOFR Loan or a CDOR Rate Loan, the duration of the Interest Period applicable thereto. A Notice of Borrowing received after 11:00 a.m. shall be deemed received on the next Business Day or US Government Securities Business Day, as applicable. The Administrative Agent shall promptly notify the Revolving Credit Lenders of each Notice of Borrowing.

(b) Disbursement of Revolving Credit and Swingline Loans. Not later than (i) 1:00 p.m. on the proposed borrowing date, each Revolving Credit Lender will make available to the Administrative Agent, for the account of the US Borrowers, at the office of the Administrative Agent in funds immediately available to the Administrative Agent (in Dollars), such Revolving Credit Lender’s Revolving Credit Commitment Percentage of the US Revolving Credit Loans to be made on such borrowing date, (ii) 11:00 a.a. on the proposed borrowing date, each Revolving Credit Lender will make available to the Administrative Agent, for the account of the Canadian Borrowers, at the office of the Administrative Agent

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in funds immediately available to the Administrative Agent (in Canadian Dollars), such Revolving Credit Lender’s Revolving Credit Commitment Percentage of the Canadian Revolving Credit Loans to be made on such borrowing date and (iii) 1:00 p.m. on the proposed borrowing date, the applicable Swingline Lender will make available to the Administrative Agent, for the account of the applicable Borrower, at the office of the Administrative Agent in funds immediately available to the Administrative Agent (in the applicable currency), the Swingline Loans to be made on such borrowing date. Each Borrower hereby irrevocably authorizes the Administrative Agent to disburse the proceeds of each borrowing requested pursuant to this Section in immediately available funds by crediting or wiring such proceeds to the deposit account of such Borrower identified in the most recent notice substantially in the form attached as Exhibit C (a “Notice of Account Designation”) delivered by such Borrower to the Administrative Agent or as may be otherwise agreed upon by such Borrower and the Administrative Agent from time to time. Subject to Section 5.7 hereof, the Administrative Agent shall not be obligated to disburse the portion of the proceeds of any Revolving Credit Loan requested pursuant to this Section to the extent that any Revolving Credit Lender has not made available to the Administrative Agent its Revolving Credit Commitment Percentage of such Loan. Revolving Credit Loans to be made for the purpose of refunding Swingline Loans shall be made by the Revolving Credit Lenders as provided in Section 2.2(b).

SECTION 2.4 Repayment and Prepayment of Revolving Credit and Swingline Loans.

(a) Repayment on Termination Date. Each Borrower hereby agrees to repay the outstanding principal amount of (i) all Revolving Credit Loans made to such Borrower in full on the Revolving Credit Maturity Date, and (ii) all Swingline Loans made to such Borrower in accordance with Section 2.2(b) (but, in any event, no later than the Revolving Credit Maturity Date), together, in each case, with all accrued but unpaid interest thereon.

(b) Mandatory Prepayments.

(iii) If at any time the Revolving Credit Outstandings exceed the Revolving Credit Commitment (as a result of currency fluctuations or otherwise), each applicable Borrower agrees to repay immediately upon notice from the Administrative Agent, by payment to the Administrative Agent for the account of the Revolving Credit Lenders, Extensions of Credit in an amount equal to such excess with each such repayment applied first, to the principal amount of outstanding US Swingline Loans, second, to the principal amount of outstanding Canadian Swingline Loans, third to the principal amount of outstanding US Revolving Credit Loans, fourth, to the principal amount of outstanding Canadian Revolving Credit Loans and fifth, with respect to any Letters of Credit then outstanding, a payment of Cash Collateral into a Cash Collateral account opened by the Administrative Agent, for the benefit of the Revolving Credit Lenders, in an amount equal to such excess (such Cash Collateral to be applied, upon the occurrence and during the continuance of an Event of Default, in accordance with Section 10.2(b)); provided that if any US Borrower is required to make a payment of Cash Collateral pursuant to the terms of this Section 2.4(b)(i) as a result of any such excess, such amount (to the extent not applied in accordance with Section 10.2(b)) shall be returned to such US Borrower within three Business Days after such excess ceases to exist.

(iv) [intentionally omitted].

(v) If at any time Swingline Loans outstanding at such time exceed the Swingline Commitment (as a result of currency fluctuations or otherwise), the applicable Borrower or Borrowers agree to repay within one (1) Business Day following receipt of notice from the Administrative Agent, by payment to the Administrative Agent for the account of the applicable Swingline Lender, Swingline Loans in an amount equal to such excess with each such repayment applied ratably to the outstanding Swingline Loans.

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(i) If at any time Letters of Credit outstanding at such time exceed the L/C Sublimit (as a result of currency fluctuations or otherwise), the applicable Borrower or Borrowers agree to Cash Collateralize the amount of such excess (such Cash Collateral to be applied, upon the occurrence and during the continuance of an Event of Default, in accordance with Section 10.2(b)); provided that if any Borrower is required to make a payment of Cash Collateral pursuant to the terms of this Section 2.4(b)(iv) as a result of any such excess, such amount (to the extent not applied in accordance with Section 10.2(b)) shall be returned to such Borrower within three Business Days after such excess ceases to exist.

(b) Optional Prepayments. The Borrowers may at any time and from time to time prepay Revolving Credit Loans and Swingline Loans, in whole or in part, without premium or penalty, with irrevocable prior written notice to the Administrative Agent substantially in the form attached as Exhibit D (a “Notice of Prepayment”) given not later than 11:00 a.m. (i) on the same Business Day as each Base Rate Loan, each Canadian Swingline Loan and each US Swingline Loan, (ii) at least one (1) Business Day before each Canadian Base Rate Loan, (iii) at least three (3) US Government Securities Business Days before each LIBOR RateSOFR Loan and (iv) at least four (4) Business Days before each CDOR Rate Loan, specifying the date and amount of prepayment and whether the prepayment is of LIBOR RateSOFR Loans, Base Rate Loans, Canadian Base Rate Loans, CDOR Rate Loans, US Swingline Loans, Canadian Swingline Loans or a combination thereof, and, if of a combination thereof, the amount allocable to each. Upon receipt of such notice, the Administrative Agent shall promptly notify each Revolving Credit Lender. If any such notice is given, the amount specified in such notice shall be due and payable on the date set forth in such notice. Partial prepayments shall be in an aggregate amount of $1,000,000 (or C$1,000,000) or a whole multiple of $500,000 (or C$500,000) in excess thereof with respect to Base Rate Loans (other than Swingline Loans) and Canadian Revolving Credit Loans, $2,000,000 or a whole multiple of $500,000 in excess thereof with respect to LIBOR RateSOFR Loans and $100,000 (or C$100,000) or a whole multiple of $100,000 (or C$100,000) in excess thereof with respect to Swingline Loans. A Notice of Prepayment received after 11:00 a.m. shall be deemed received on the next Business Day or US Government Securities Business Day, as applicable. Each such repayment shall be accompanied by any amount required to be paid pursuant to Section 5.9 hereof. Notwithstanding the foregoing, any Notice of Prepayment delivered in connection with any refinancing of all of the Credit Facility with the proceeds of such refinancing or of any incurrence of Indebtedness, may be, if expressly so stated to be, contingent upon the consummation of such refinancing or incurrence and may be revoked by the Borrowers in the event such refinancing is not consummated (provided that the failure of such contingency shall not relieve any Borrower from its obligations in respect thereof under Section 5.9).

(c) Prepayment of Excess Proceeds. In the event proceeds remain after the prepayments of Term Loan Facility pursuant to Section 4.4(b), the amount of such excess proceeds shall be used on the date of the required prepayment under Section 4.4(b) to prepay the outstanding principal amount of the Revolving Credit Loans, without a corresponding reduction of the Revolving Credit Commitment, with remaining proceeds, if any, refunded to the Borrowers.

(d) Limitation on Prepayment of LIBOR RateSOFR Loans. The Borrowers may not prepay any LIBOR RateSOFR Loan on any day other than on the last day of the Interest Period applicable thereto unless such prepayment is accompanied by any amount required to be paid pursuant to Section 5.9 hereof.

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(e) Hedge Agreements. No repayment or prepayment of the Loans pursuant to this Section shall affect any of the Borrowers’ obligations under any Hedge Agreement entered into with respect to the Loans.

SECTION 2.5 Permanent Reduction of the Revolving Credit Commitment.

(a) Voluntary Reduction. The Borrowers shall have the right at any time and from time to time, upon at least five (5) Business Days prior irrevocable written notice to the Administrative Agent, to permanently reduce, without premium or penalty, (i) the entire Revolving Credit Commitment at any time or (ii) portions of the Revolving Credit Commitment, from time to time, in an aggregate principal amount not less than $3,000,000 or any whole multiple of $1,000,000 in excess thereof. Any reduction of the Revolving Credit Commitment shall be applied to the Revolving Credit Commitment of each Revolving Credit Lender according to its Revolving Credit Commitment Percentage. All Commitment Fees accrued until the effective date of any termination of the Revolving Credit Commitment shall be paid on the effective date of such termination. No such reduction in the Revolving Credit Commitments shall reduce the Swingline Commitment or the L/C Sublimit (except as set forth in each respective definition). Notwithstanding the foregoing, any notice to reduce the Revolving Credit Commitment to zero delivered in connection with any refinancing of all of the Credit Facility with the proceeds of such refinancing or of any incurrence of Indebtedness, may be, if expressly so stated to be, contingent upon the consummation of such refinancing or incurrence and may be revoked by any Borrower in the event such refinancing is not consummated (provided that the failure of such contingency shall not relieve any Borrower from its obligations in respect thereof under Section 5.9).

(b) Corresponding Payment. Each permanent reduction permitted pursuant to this Section shall be accompanied by a payment of principal sufficient to reduce the aggregate outstanding Revolving Credit Loans, Swingline Loans and L/C Obligations, as applicable, after such reduction to the Revolving Credit Commitment as so reduced, and if the aggregate amount of all outstanding Letters of Credit exceeds the Revolving Credit Commitment as so reduced, the applicable Borrower shall be required to deposit Cash Collateral in a Cash Collateral account opened by the Administrative Agent in an amount equal to such excess. Such Cash Collateral shall be applied in accordance with Section 10.2(b). Any reduction of the Revolving Credit Commitment to zero shall be accompanied by payment of all outstanding Revolving Credit Loans and Swingline Loans (and furnishing of Cash Collateral satisfactory to the Administrative Agent for all L/C Obligations) and shall result in the termination of the Revolving Credit Commitment and the Swingline Commitment and the Revolving Credit Facility. If the reduction of the Revolving Credit Commitment requires the repayment of any LIBOR RateSOFR Loan, such repayment shall be accompanied by any amount required to be paid pursuant to Section 5.9 hereof.

SECTION 2.6 Termination of Revolving Credit Facility

. The Revolving Credit Facility and the Revolving Credit Commitments shall terminate on the Revolving Credit Maturity Date (after giving effect to any Extension).

ARTICLE III

LETTER OF CREDIT FACILITY

SECTION 3.1 L/C Facility.

(a) Availability. Subject to the terms and conditions hereof, each applicable Issuing Lender, in reliance on the agreements of the Revolving Credit Lenders set forth in Section 3.4(a), agrees to issue (i) standby or commercial US Letters of Credit in an aggregate amount not to exceed its L/C Commitment for

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the account of the US Borrowers or, subject to Section 3.10, any US Subsidiary or Affiliate thereof that is organized under the laws of the United States, any State thereof or the District of Columbia and (ii) standby or commercial Canadian Letters of Credit in an aggregate amount not to exceed its L/C Commitment for the account of the Canadian Borrowers or, subject to Section 3.10, any Canadian Subsidiary or Affiliate thereof that is organized under the laws of Canada or any province or territory thereof, in each case, on any Business Day from the Closing Date through but not including the thirtieth (30th) Business Day prior to the Revolving Credit Maturity Date in such form as may be approved from time to time by the applicable Issuing Lender; provided, that no Issuing Lender shall issue any Letter of Credit if, after giving effect to such issuance, (A) the L/C Obligations would exceed the L/C Sublimit, (B) the Revolving Credit Outstandings would exceed the Revolving Credit Commitment or (C) the L/C Obligations with respect to Letters of Credit issued by such Issuing Lender would exceed such Issuing Lender’s L/C Commitment. Each Letter of Credit (1) (x) to be denominated in Dollars shall, in the case of a commercial US Letter of Credit, be in a minimum amount of $100,000 and, in the case of a standby US Letter of Credit, be in a minimum amount of $100,000 (or such lesser amounts as agreed to by the applicable Issuing Lender and the Administrative Agent), and (y) to be denominated in Canadian Dollars shall, in the case of a commercial Canadian Letter of Credit, be in a minimum amount of C$100,000 and, in the case of a standby Canadian Letter of Credit, be in a minimum amount of C$100,000 (or such lesser amounts as agreed to by the applicable Issuing Lender and the Administrative Agent), (2) except as agreed to by the Administrative Agent and the applicable Issuing Lender with respect to any Existing Letter of Credit, shall expire on a date no more than twelve (12) months after the date of issuance or last renewal of such Letter of Credit (subject to automatic renewal for additional one (1) year periods pursuant to the terms of the Letter of Credit Application or other documentation acceptable to the applicable Issuing Lender), (3) shall expire no later than the fifth (5th) Business Day prior to the Revolving Credit Maturity Date (except that if agreed to by the applicable Issuing Lender and the Administrative Agent, any Existing Letter of Credit may expire after such date so long as such Existing Letter of Credit is Cash Collateralized pursuant to documentation and on terms and conditions acceptable to such Issuing Lender and the Administrative Agent no later than the date that is 91 days prior to the Revolving Credit Maturity Date), (4) with respect to each US Letter of Credit, shall be subject to the Uniform Customs, in the case of a commercial Letter of Credit, or ISP98, in the case of a standby Letter of Credit, in each case, as set forth in the Letter of Credit Application or as determined by the applicable Issuing Lender and, to the extent not inconsistent therewith, the laws of the State of New York and (5) with respect to each Canadian Letter of Credit, shall be subject to the law set forth in the Letter of Credit Application or as agreed by the applicable Issuing Lender and the Canadian Borrowers. No Issuing Lender shall at any time be obligated to issue any Letter of Credit hereunder if (A) any order, judgment or decree of any Governmental Authority or arbitrator shall by its terms purport to enjoin or restrain such Issuing Lender from issuing such Letter of Credit, or any Applicable Law applicable to such Issuing Lender or any request or directive (whether or not having the force of law) from any Governmental Authority with jurisdiction over such Issuing Lender shall prohibit, or request that such Issuing Lender refrain from, the issuance of letters of credit generally or such Letter of Credit in particular or shall impose upon such Issuing Lender with respect to letters of credit generally or such Letter of Credit in particular any restriction or reserve or capital requirement (for which such Issuing Lender is not otherwise compensated) not in effect on the Closing Date, or any unreimbursed loss, cost or expense that was not applicable, in effect as of the Closing Date and that such Issuing Lender in good ▇▇▇▇▇ ▇▇▇▇▇ material to it, (B) the conditions set forth in Section 6.2 are not satisfied or (C) the beneficiary of such Letter of Credit is a Sanctioned Person. References herein to “issue” and derivations thereof with respect to Letters of Credit shall also include extensions or modifications of any outstanding Letters of Credit, unless the context otherwise requires. As of the Closing Date, each of the Existing Letters of Credit shall constitute, for all purposes of this Agreement and the other Loan Documents, a Letter of Credit issued and outstanding hereunder.

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(b) Defaulting Lenders. Notwithstanding anything to the contrary contained in this Agreement, Article III shall be subject to the terms and conditions of Section 5.14 and Section 5.15.

SECTION 3.2 Procedure for Issuance of Letters of Credit

. The (a) US Borrowers may from time to time request that any Issuing Lender issue a US Letter of Credit and (b) Canadian Borrowers may from time to time request that any Issuing Lender issue a Canadian Letter of Credit, in each case, by delivering to such Issuing Lender at its applicable office (with a copy to the Administrative Agent at the Administrative Agent’s Office) a Letter of Credit Application therefor, completed to the satisfaction of such Issuing Lender, and such other certificates, documents and other papers and information as such ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ or the Administrative Agent may request. Upon receipt of any Letter of Credit Application, the applicable Issuing Lender shall process such Letter of Credit Application and the certificates, documents and other papers and information delivered to it in connection therewith in accordance with its customary procedures and shall, subject to Section 3.1 and Article VI, promptly issue the Letter of Credit requested thereby (but in no event shall such Issuing Lender be required to issue any Letter of Credit earlier than three (3) Business Days after its receipt of the Letter of Credit Application therefor and all such other certificates, documents and other papers and information relating thereto) by issuing the original of such Letter of Credit to the beneficiary thereof or as otherwise may be agreed by such Issuing Lender and the applicable Borrower. The applicable Issuing Lender shall promptly furnish to the applicable Borrowers and the Administrative Agent a copy of such Letter of Credit and the Administrative Agent shall promptly notify each Revolving Credit Lender of the issuance and upon request by any ▇▇▇▇▇▇, furnish to such Revolving Credit Lender a copy of such Letter of Credit and the amount of such Revolving Credit ▇▇▇▇▇▇’s participation therein.

SECTION 3.3 Commissions and Other Charges.

(a) Letter of Credit Commissions. Subject to Section 5.15(a)(iii)(B), Centuri shall pay to the Administrative Agent, for the account of the applicable Issuing Lender and the L/C Participants, a letter of credit commission with respect to each Letter of Credit in the amount equal to the daily amount available to be drawn under such Letters of Credit times 50% of the Applicable Margin with respect to Revolving Credit Loans that are LIBOR RateSOFR Loans (determined, in each case, on a per annum basis). Such commission shall be payable quarterly in arrears on the last Business Day of each calendar quarter, on the Revolving Credit Maturity Date and thereafter on demand of the Administrative Agent. The Administrative Agent shall, promptly following its receipt thereof, distribute to the applicable Issuing Lender and the L/C Participants all commissions received pursuant to this Section 3.3 in accordance with their respective Revolving Credit Commitment Percentages.

(b) Issuance Fee. In addition to the foregoing commission, the applicable Borrower shall pay directly to the applicable Issuing Lender, for its own account, an issuance fee with respect to each Letter of Credit issued by such ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ as set forth in the applicable Fee Letter executed by such Issuing Lender. Such issuance fee shall be payable quarterly in arrears on the last Business Day of each calendar quarter commencing with the first such date to occur after the issuance of such Letter of Credit, on the Revolving Credit Maturity Date and thereafter on demand of the applicable Issuing Lender. For the avoidance of doubt, such issuance fee shall be applicable to and paid upon each of the Existing Letters of Credit.

(c) Other Fees, Costs, Charges and Expenses. In addition to the foregoing fees and commissions, the Borrowers shall pay or reimburse each Issuing Lender for such normal and customary fees, costs, charges and expenses as are incurred or charged by such Issuing Lender in issuing, effecting payment under, amending or otherwise administering any Letter of Credit issued by it.

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SECTION 3.4 L/C Participations.

(a) Each Issuing Lender irrevocably agrees to grant and hereby grants to each L/C Participant, and, to induce each Issuing Lender to issue Letters of Credit hereunder, each L/C Participant irrevocably agrees to accept and purchase and hereby accepts and purchases from each Issuing Lender, on the terms and conditions hereinafter stated, for such L/C Participant’s own account and risk an undivided interest equal to such L/C Participant’s Revolving Credit Commitment Percentage in each Issuing Lender’s obligations and rights under and in respect of each Letter of Credit issued by it hereunder and the amount of each draft paid by such Issuing Lender thereunder. Each L/C Participant unconditionally and irrevocably agrees with each Issuing Lender that, if a draft is paid under any Letter of Credit issued by such Issuing Lender for which such Issuing Lender is not reimbursed in full by the Borrowers through a Revolving Credit Loan or otherwise in accordance with the terms of this Agreement, such L/C Participant shall pay to such Issuing Lender upon demand at such Issuing Lender’s address for notices specified herein an amount equal to such L/C Participant’s Revolving Credit Commitment Percentage of the amount of such draft, or any part thereof, which is not so reimbursed.

(b) Upon becoming aware of any amount required to be paid by any L/C Participant to any Issuing Lender pursuant to Section 3.4(a) in respect of any unreimbursed portion of any payment made by such Issuing Lender under any Letter of Credit issued by it, such Issuing Lender shall notify the Administrative Agent of such unreimbursed amount and the Administrative Agent shall notify each L/C Participant (with a copy to the applicable Issuing Lender) of the amount and due date of such required payment and such L/C Participant shall pay to the Administrative Agent (which, in turn shall pay such Issuing Lender) the amount specified on the applicable due date. If any such amount is paid to such Issuing Lender after the date such payment is due, such L/C Participant shall pay to such Issuing Lender on demand, in addition to such amount, the product of (i) such amount, times (ii) the daily average Federal Funds Rate as determined by the Administrative Agent during the period from and including the date such payment is due to the date on which such payment is immediately available to such Issuing Lender, times (iii) a fraction the numerator of which is the number of days that elapse during such period and the denominator of which is 360. A certificate of such Issuing Lender with respect to any amounts owing under this Section shall be conclusive in the absence of manifest error. With respect to payment to such Issuing Lender of the unreimbursed amounts described in this Section, if the L/C Participants receive notice that any such payment is due (A) prior to 1:00 p.m. on any Business Day, such payment shall be due that Business Day, and (B) after 1:00 p.m. on any Business Day, such payment shall be due on the following Business Day.

(c) Whenever, at any time after any Issuing Lender has made payment under any Letter of Credit issued by it and has received from any L/C Participant its Revolving Credit Commitment Percentage of such payment in accordance with this Section, such Issuing Lender receives any payment related to such Letter of Credit (whether directly from the US Borrowers or otherwise), or any payment of interest on account thereof, such Issuing Lender will distribute to such L/C Participant its pro rata share thereof; provided, that in the event that any such payment received by such Issuing Lender shall be required to be returned by such Issuing Lender, such L/C Participant shall return to such Issuing Lender the portion thereof previously distributed by such Issuing Lender to it.

SECTION 3.5 Reimbursement Obligation of the Borrowers

. In the event of any drawing under any Letter of Credit, the applicable Borrower agrees to reimburse (either with the proceeds of a Revolving Credit Loan as provided for in this Section or with funds from other sources), in same day funds, the applicable Issuing Lender on each date on which such Issuing Lender notifies the applicable Borrower of the date and amount of a draft paid by it under any Letter of Credit for the amount of (a) such draft so paid and (b) any amounts referred to in Section 3.3(c) incurred by such

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Issuing Lender in connection with such payment. Unless the applicable Borrower shall immediately notify such Issuing Lender that such Borrower intends to reimburse such Issuing Lender for such drawing from other sources or funds, such Borrower shall be deemed to have timely given a Notice of Borrowing to the Administrative Agent requesting that the Revolving Credit Lenders make a Revolving Credit Loan bearing interest at the Base Rate on the applicable repayment date in the amount of (i) such draft so paid and (ii) any amounts referred to in Section 3.3(c) incurred by such Issuing Lender in connection with such payment, and the Revolving Credit Lenders shall make a Revolving Credit Loan bearing interest at the Base Rate in such amount, the proceeds of which shall be applied to reimburse such Issuing Lender for the amount of the related drawing and such fees and expenses. Each Revolving Credit Lender acknowledges and agrees that its obligation to fund a Revolving Credit Loan in accordance with this Section to reimburse such Issuing Lender for any draft paid under a Letter of Credit issued by it is absolute and unconditional and shall not be affected by any circumstance whatsoever, including, without limitation, non-satisfaction of the conditions set forth in Section 2.3(a) or Article VI. If a Borrower has elected to pay the amount of such drawing with funds from other sources and shall fail to reimburse such Issuing Lender as provided above, the unreimbursed amount of such drawing shall bear interest at the rate which would be payable on any outstanding Base Rate Loans which were then overdue from the date such amounts become payable (whether at stated maturity, by acceleration or otherwise) until payment in full.

SECTION 3.6 Obligations Absolute

. Each Borrower’s obligations under this Article III (including, without limitation, the Reimbursement Obligation) shall be absolute and unconditional under any and all circumstances and irrespective of any set off, counterclaim or defense to payment such Borrower may have or have had against the applicable Issuing Lender or any beneficiary of a Letter of Credit or any other Person. Each Borrower also agrees that the applicable Issuing Lender and the L/C Participants shall not be responsible for, and such Borrower’s Reimbursement Obligation under Section 3.5 shall not be affected by, among other things, the validity or genuineness of documents or of any endorsements thereon, even though such documents shall in fact prove to be invalid, fraudulent or forged, or any dispute between or among such Borrower and any beneficiary of any Letter of Credit or any other party to which such Letter of Credit may be transferred or any claims whatsoever of such Borrower against any beneficiary of such Letter of Credit or any such transferee. No Issuing Lender shall be liable for any error, omission, interruption or delay in transmission, dispatch or delivery of any message or advice, however transmitted, in connection with any Letter of Credit issued by it, except for errors or omissions caused by such Issuing ▇▇▇▇▇▇’s gross negligence or willful misconduct, as determined by a court of competent jurisdiction by final nonappealable judgment. Each Borrower agrees that any action taken or omitted by any Issuing Lender under or in connection with any Letter of Credit issued by it or the related drafts or documents, if done in the absence of gross negligence or willful misconduct shall be binding on such Borrower and shall not result in any liability of such Issuing Lender or any L/C Participant to any Borrower. The responsibility of any Issuing Lender to the Borrowers in connection with any draft presented for payment under any Letter of Credit issued to it shall, in addition to any payment obligation expressly provided for in such Letter of Credit, be limited to determining that the documents (including each draft) delivered under such Letter of Credit in connection with such presentment substantially conforms to the requirements under such Letter of Credit.

SECTION 3.7 Effect of Letter of Credit Application

. To the extent that any provision of any Letter of Credit Application related to any Letter of Credit is inconsistent with the provisions of this Agreement, the provisions of this Agreement shall apply and control.

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SECTION 3.8 Removal and Resignation of Issuing Lenders

(a) The Borrowers may at any time remove any Lender from its role as an Issuing Lender hereunder upon not less than thirty (30) days prior notice to such Issuing Lender and the Administrative Agent (or such shorter period of time as may be acceptable to such Issuing Lender and the Administrative Agent).

(b) Any ▇▇▇▇▇▇ may at any time resign from its role as an ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ hereunder upon not less than thirty (30) days prior notice to Centuri and the Administrative Agent (or such shorter period of time as may be acceptable to Centuri and the Administrative Agent).

(c) In connection with (i) any Refinancing Revolving Credit Commitments or (ii) any Extension of Revolving Credit Commitments, that has not been consented to by any Issuing Lender, such Issuing Lender may, in connection with such Refinancing Revolving Credit Commitments or Extension resign as an Issuing Lender hereunder upon not less than five (5) Business Days’ prior notice to Centuri and the Administrative Agent (or such shorter period of time as may be acceptable to Centuri and the Administrative Agent).

(d) Any removed or resigning Issuing Lender shall retain all the rights, powers, privileges and duties of an ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ hereunder with respect to all Letters of Credit issued by it that are outstanding as of the effective date of its removal or resignation as an Issuing Lender and all L/C Obligations with respect thereto (including, without limitation, the right to require the Revolving Credit Lenders to take such actions as are required under Section 3.4). Without limiting the foregoing, upon the removal or resignation of a Lender as an Issuing Lender hereunder, the Borrowers may, or at the request of such removed or resigned Issuing Lender the Borrowers shall, use commercially reasonable efforts to, arrange for one or more of the other Issuing Lenders to issue Letters of Credit hereunder in substitution for the Letters of Credit, if any, issued by such removed or resigned Issuing Lender and outstanding at the time of such removal or resignation, or make other arrangements satisfactory to the removed or resigned Issuing Lender to effectively cause another Issuing Lender to assume the obligations of the removed or resigned Issuing Lender with respect to any such Letters of Credit.

SECTION 3.9 Reporting of Letter of Credit Information and L/C Commitment

. At any time that there is an Issuing Lender that is not also the financial institution acting as Administrative Agent, then (a) on the last Business Day of each calendar month, (b) on each date that a Letter of Credit is amended, terminated or otherwise expires, (c) on each date that a Letter of Credit is issued or the expiry date of a Letter of Credit is extended, and (d) upon the request of the Administrative Agent, each Issuing Lender (or, in the case of clauses (b), (c) or (d) of this Section, the applicable Issuing Lender) shall deliver to the Administrative Agent a report setting forth in form and detail reasonably satisfactory to the Administrative Agent information (including, without limitation, any reimbursement, Cash Collateral, or termination in respect of Letters of Credit issued by such Issuing Lender) with respect to each Letter of Credit issued by such Issuing Lender that is outstanding hereunder. In addition, each Issuing Lender shall provide notice to the Administrative Agent of its L/C Commitment, or any change thereto, promptly upon it becoming an Issuing Lender or making any change to its L/C Commitment. No failure on the part of any Issuing Lender to provide such information pursuant to this Section 3.9 shall limit the obligations of the Borrowers or any Revolving Credit Lender hereunder with respect to its reimbursement and participation obligations hereunder.

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SECTION 3.10 Letters of Credit Issued for Subsidiaries

. Notwithstanding that a Letter of Credit issued or outstanding hereunder is in support of any obligations of, or is for the account of, a Borrower or any Subsidiary or Affiliate thereof described in Section 3.1(a), the applicable Borrower shall be obligated to reimburse, or to cause the applicable Subsidiary or Affiliate to reimburse, the applicable Issuing Lender hereunder for any and all drawings under such Letter of Credit; provided that aggregate face amount of all Letters of Credit issued for the account of such Affiliates of the Borrowers that are not also Subsidiaries of the Borrowers shall not exceed $25,000,000 at any time outstanding. Each Borrower hereby acknowledges that the issuance of Letters of Credit for the account of any of its Subsidiaries or Affiliates inures to the benefit of such Borrower and that such Borrower’s business derives substantial benefits from the businesses of such Subsidiaries and Affiliates.

ARTICLE IV TERM LOAN

FACILITY

SECTION 4.1 Initial Term Loan

. Subject to the terms and conditions of this Agreement and the other Loan Documents, and in reliance upon the representations and warranties set forth in this Agreement and the other Loan Documents, each Term Loan Lender severally agrees to make the Initial Term Loan to Centuri, on the Closing Date, in a principal amount equal to such ▇▇▇▇▇▇’s Term Loan Percentage of the Initial Term Loan as of the Closing Date.

SECTION 4.2 Procedure for Advance of Initial Term Loan

. The applicable Borrower shall give the Administrative Agent an irrevocable Notice of Borrowing prior to 11:00 a.m. on the Closing Date requesting that the Term Loan Lenders make the Initial Term Loan as a Base Rate Loan on such date (provided that the Centuri may request, no later than three (3) Business Days prior to the Closing Date, that the Term Loan Lenders make the Initial Term Loan as a LIBOR Rate Loan, as applicable, if Centuri has delivered to the Administrative Agent a letter in form and substance reasonably satisfactory to the Administrative Agent indemnifying the Lenders in the manner set forth in Section 5.9 of this Agreement). Upon receipt of such Notice of Borrowing from the applicable Borrower, the Administrative Agent shall promptly notify each Term Loan Lender thereof. Not later than 1:00 p.m. on the Closing Date, with respect to the Initial Term Loan made on the Closing Date, each Term Loan Lender will make available to the Administrative Agent for the account of the applicable Borrower, at the Administrative Agent’s Office in immediately available funds, the amount of such Initial Term Loan to be made by such Term Loan Lender on the Closing Date. The Borrowers hereby irrevocably authorize the Administrative Agent to disburse the proceeds of the Initial Term Loan in immediately available funds by wire transfer to such Person or Persons as may be designated by the applicable Borrower in writing.

SECTION 4.3 Repayment of Term Loans.

(a) Initial Term Loan. The Borrowers shall repay the aggregate outstanding principal amount of the Initial Term Loan in consecutive quarterly installments equal to $2,862,500 (as the amounts of individual installments may be adjusted pursuant to Section 4.4) on the last Business Day of each of March, June, September and December commencing December 31, 2021; provided, however, that the final principal repayment installment of the Initial Term Loan shall be repaid on the Term Loan Maturity Date in an amount equal to the aggregate principal amount of all Initial Term Loans outstanding on such date, together with accrued interest thereon.

(b) Incremental Term Loans. The US Borrowers or the Canadian Borrowers, as applicable, shall repay the aggregate outstanding principal amount of each Incremental Term Loan (if any) as determined pursuant to, and in accordance with, Section 5.13.

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SECTION 4.4 Prepayments of Term Loans.

(a) Optional Prepayments. Except as provided in Section 4.4(c), the applicable Borrower shall have the right at any time and from time to time, without premium or penalty, to prepay any of the Term Loans, in whole or in part, upon delivery to the Administrative Agent of a Notice of Prepayment not later than 11:00 a.m. (i) on the same Business Day as each Base Rate Loan, (ii) at least one (1) Business Day before each Canadian Base Rate Loan and (iii) at least three (3) Business Days before each LIBOR Rate Loan or CDOR Rate Loan, as applicable, specifying the date and amount of repayment, whether the repayment is of LIBOR Rate Loans, CDOR Rate Loans, Base Rate Loans or Canadian Base Rate Loans or a combination thereof, and if a combination thereof, the amount allocable to each and whether the repayment is of the Initial Term Loan, an Incremental Term Loan or a combination thereof, and if a combination thereof, the amount allocable to each. Each optional prepayment of the Term Loans hereunder shall be in an aggregate principal amount of at least $5,000,000 (or C$5,000,000) or any whole multiple of $1,000,000 (C$1,000,000) in excess thereof and shall be applied, on a pro rata basis, to the outstanding principal installments of the Term Loans being so repaid as directed by the applicable Borrowers (or, if not so directed, in direct order of maturity). Each repayment shall be accompanied by any amount required to be paid pursuant to Section 5.9 hereof. A Notice of Prepayment received after 11:00 a.m. shall be deemed received on the next Business Day. The Administrative Agent shall promptly notify the applicable Term Loan Lenders of each Notice of Prepayment. Notwithstanding the foregoing, any Notice of Prepayment delivered in connection with any refinancing of all of the Credit Facility with the proceeds of such refinancing or of any other incurrence of Indebtedness may be, if expressly so stated to be, contingent upon the consummation of such refinancing or incurrence and may be revoked by the applicable Borrower in the event such refinancing is not consummated; provided that the delay or failure of such contingency shall not relieve any Borrower from its obligations in respect thereof under Section 5.9.

(b) Mandatory Prepayments.

(x) Debt Issuances. The Borrowers shall make mandatory principal prepayments of the Loans in the manner set forth in clause (v) below in an amount equal to one hundred percent (100%) of the aggregate Net Cash Proceeds from any Debt Issuance of Refinancing Debt or any other Debt Issuance not otherwise permitted pursuant to Section 9.1. Such prepayment shall be made within three (3) Business Days after the date of receipt of the Net Cash Proceeds of any such Debt Issuance.

(xi) Asset Dispositions and Insurance and Condemnation Events. The Borrowers shall make mandatory principal prepayments of the Loans in the manner set forth in clause (v) below in amounts equal to one hundred percent (100%) of the aggregate Net Cash Proceeds from (A) any Asset Disposition (other than any Asset Disposition permitted pursuant to, and in accordance with, clauses (a) through (p) of Section 9.5) or (B) any Insurance and Condemnation Event, to the extent that the aggregate amount of such Net Cash Proceeds, in the case of each of clauses (A) and (B), respectively, exceed $5,000,000 during any Fiscal Year. Such prepayments shall be made within three (3) Business Days after the date of receipt of the Net Cash Proceeds; provided that, so long as no Default or Event of Default has occurred and is continuing, no prepayment shall be required under this Section 4.4(b)(ii) with respect to such portion of such Net Cash Proceeds that Centuri shall have reinvested, or prior to such date given written notice to the Administrative Agent of its intent to reinvest in accordance with Section 4.4(b)(iii).

(xii) Reinvestment Option. With respect to any Net Cash Proceeds realized or received with respect to any Asset Disposition or any Insurance and Condemnation Event by any Credit Party of any Subsidiary thereof (in each case, to the extent not excluded pursuant to Section 4.4(b)(ii)),

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at the option of Centuri, the Credit Parties may reinvest all or any portion of such Net Cash Proceeds in assets used or useful for the business of the Credit Parties and their Subsidiaries within (x) twelve (12) months following receipt of such Net Cash Proceeds or (y) if such Credit Party enters into a bona fide commitment to reinvest such Net Cash Proceeds within twelve (12) months following receipt thereof, within the later of (A) twelve (12) months following receipt thereof and (B) six (6) months of the date of such commitment; provided that if any Net Cash Proceeds are no longer intended to be or cannot be so reinvested at any time after delivery of a notice of reinvestment election, an amount equal to any such Net Cash Proceeds shall be applied within three (3) Business Days after the applicable Credit Party reasonably determines that such Net Cash Proceeds are no longer intended to be or cannot be so reinvested to the prepayment of the Term Loans as set forth in this Section 4.4(b); provided further that any Net Cash Proceeds relating to Collateral shall be reinvested in assets constituting Collateral. Pending the final application of any such Net Cash Proceeds, the applicable Credit Party may invest an amount equal to such Net Cash Proceeds in any manner that is not prohibited by this Agreement.

(i) Excess Cash Flow. After the end of each Fiscal Year (commencing with the Fiscal Year ending December 31, 2022), within five (5) Business Days after the earlier to occur of (x) the actual delivery of the financial statements and related Officer’s Compliance Certificate for such Fiscal Year and (y) the date on which the financial statements and the related Officer’s Compliance Certificate for such Fiscal Year are required to be delivered pursuant to Section 8.1(a) and Section 8.2(a), the Borrowers shall make mandatory principal prepayments of the Loans in the manner set forth in clause (v) below in an amount equal to (A) the applicable ECF Percentage for such Fiscal Year times Excess Cash Flow for such Fiscal Year minus (B) the aggregate amount of (i) all optional prepayments of Revolving Credit Loans during such Fiscal Year (solely to the extent accompanied by permanent optional reductions in the Revolving Credit Commitment) and (ii) all optional prepayments of any Term Loans during such Fiscal Year, in each case to the extent that such prepayments are not funded with the incurrence of any Indebtedness, any Equity Issuance, any casualty proceeds, any condemnation proceeds or any other proceeds that would not be included in Consolidated EBITDA; provided, that, so long as no Event of Default has occurred and is continuing or would result therefrom, no such prepayments shall be required unless Excess Cash Flow for such year equals or exceeds $5,000,000, at which point the Borrowers shall cause to be prepaid an aggregate principal amount of Loans equal to the applicable percentage of Excess Cash Flow as set forth herein from the first dollar.

(ii) Notice; Manner of Payment. Upon the occurrence of any event triggering the prepayment requirement under clauses (i) through and including (iv) above, the applicable Borrower shall promptly deliver a Notice of Prepayment to the Administrative Agent and upon receipt of such notice, the Administrative Agent shall promptly so notify the Lenders. Each prepayment of the Loans under this Section shall be applied as follows: first, ratably between the Initial Term Loan and any Incremental Term Loans to reduce on a pro rata basis (applied to reduce the remaining scheduled principal installments of the Initial Term Loan and any Incremental Term Loans on a pro rata basis) and (ii) second, to the extent of any excess, to repay the Revolving Credit Loans pursuant to Section 2.4(d), without a corresponding reduction in the Revolving Credit Commitment. Proceeds of any Refinancing Debt shall be applied solely to prepay each applicable Class of Term Loans and/or Revolving Credit Loans subject to such Refinance. Notwithstanding the foregoing, with respect to any Net Cash Proceeds from any Asset Disposition or Insurance and Condemnation Event, the applicable Borrower may prepay Term Loans and prepay or purchase any Refinancing Notes or Incremental Equivalent Indebtedness that is secured by the Collateral on a pari passu basis (at a purchase price no greater than par plus accrued and unpaid interest), to the extent required thereby, on a pro rata basis in accordance with the respective outstanding principal amounts of the Term Loans and such Refinancing Notes or Incremental Equivalent Indebtedness as of the time of the applicable Asset Disposition or Insurance and Condemnation Event.

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(iii) Rejection Right. Each Term Loan Lender may reject all (but not less than all) of its pro rata share of any mandatory prepayment (except in the case of any prepayment of Term Loans in accordance with Section 4.4(b)(i) with the proceeds of Refinancing Debt) (such declined amounts, the “Declined Proceeds”) of Term Loans required to be made pursuant to Section 4.4(b) by providing written notice to the Administrative Agent no later than 5:00 p.m. one Business Day after the date of such ▇▇▇▇▇▇’s receipt of notice from the Administrative Agent regarding such prepayment. If a Lender fails to deliver a notice of rejection to the Administrative Agent within the time frame specified above, any such failure will be deemed an acceptance of the total amount of such mandatory prepayment of Term Loans. Any Declined Proceeds remaining after offering such Declined Proceeds to the Lenders in accordance with the terms hereof shall be retained by the Borrowers and used for any purpose not prohibited by this Agreement.

(iv) Prepayment of LIBOR Rate Loans, SOFR Loans and CDOR Rate Loans. Each prepayment shall be accompanied by any amount required to be paid pursuant to Section 5.9; provided that, so long as no Default or Event of Default shall have occurred and be continuing, if any prepayment of LIBOR Rate Loans, SOFR Loans or CDOR Rate Loans is required to be made under this Section 4.4(b) prior to the last day of the Interest Period therefor, in lieu of making any payment pursuant to this Section 4.4(b) in respect of any such LIBOR Rate Loan, SOFR Loan or CDOR Rate Loans prior to the last day of the Interest Period therefor, the applicable Borrower may, in its sole discretion, deposit an amount sufficient to make any such prepayment otherwise required to be made thereunder together with accrued interest to the last day of such Interest Period into an account held at, and subject to the sole control of, the Administrative Agent until the last day of such Interest Period, at which time the Administrative Agent shall be authorized (without any further action by or notice to or from the Borrowers or any other Credit Party) to apply such amount to the prepayment of such Term Loans in accordance with this Section 4.4(b). Upon the occurrence and during the continuance of any Default or Event of Default, the Administrative Agent shall also be authorized (without any further action by or notice to or from the Borrowers or any other Credit Party) to apply such amount to the prepayment of the outstanding Term Loans in accordance with the relevant provisions of this Section 4.4(b).

(v) No Reborrowings. Amounts prepaid under the Term Loan pursuant to this Section may not be reborrowed.

(c) Call Premium. In connection with any Repricing Transaction that is consummated in respect of all or any portion of the Initial Term Loans, during the six (6) month period following the Closing Date, the Borrower shall pay to the Administrative Agent, for the ratable benefit each Term Loan Lender, a fee equal to 1.0% of the aggregate principal amount of the Initial Term Loans of such Term Loan Lender subject to such Repricing Transaction (it being understood that any such fees under clause (b) of the definition of “Repricing Transaction” shall be paid to each Non-Consenting Lender that is replaced in such Repricing Transaction pursuant to Section 5.12(b)). Such fees shall be due and payable within three (3) Business Days of the date of the effectiveness of such Repricing Transaction.

ARTICLE V

GENERAL LOAN PROVISIONS

SECTION 5.1 Interest.

(a) Interest Rate Options. Subject to the provisions of this Section, at the election of the US Borrowers or the Canadian Borrowers, as applicable:

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(xiii) (A) US Revolving Credit Loans and any Term Loans denominated in Dollars shall bear interest at (A1) the Base Rate plus the Applicable Margin or (B2) Adjusted Term SOFR plus the Applicable Margin (provided that Adjusted Term SOFR shall not be available until three (3) US Government Securities Business Days after the First Amendment Effective Date unless the US Borrowers have delivered to the Administrative Agent a letter in form and substance reasonably satisfactory to the Administrative Agent indemnifying the Lenders in the manner set forth in Section 5.9 of this Agreement) and (B) Term Loans denominated in Dollars shall bear interest at (1) the Base Rate plus the Applicable Margin or (2) the LIBOR Rate plus the Applicable Margin (provided that the LIBOR Rate shall not be available until three (3) Business Days after the Closing Date unless the US Borrowers have delivered to the Administrative Agent a letter in form and substance reasonably satisfactory to the Administrative Agent indemnifying the Lenders in the manner set forth in Section 5.9 of this Agreement);

(xiv) Canadian Revolving Credit Loans and Term Loans denominated in Canadian Dollars shall bear interest at (A) the Canadian Base Rate plus the Applicable Margin or (B) the CDOR Rate plus the Applicable Margin (provided that the CDOR Rate shall not be available until four (4) Business Days after the Closing Date unless the Canadian Borrowers have delivered to the Administrative Agent a letter in form and substance reasonably satisfactory to the Administrative Agent indemnifying the Lenders in the manner set forth in Section 5.9 of this Agreement);

(xv) US Swingline Loans shall bear interest at the Base Rate plus the Applicable Margin; and

(xvi) Canadian Swingline Loans shall bear interest at the Canadian Base Rate plus the Applicable Margin.

The US Borrowers or the Canadian Borrowers, as applicable, shall select the rate of interest and Interest Period, if any, applicable to any Loan at the time a Notice of Borrowing is given or at the time a Notice of Conversion/Continuation is given pursuant to Section 5.2. Any US Revolving Credit Loan or Term Loan denominated in Dollars or any portion thereof as to which a US Borrower has not duly specified an interest rate as provided herein shall be deemed a Base Rate Loan. Any Canadian Revolving Credit Loan or Term Loan denominated in Canadian Dollars or any portion thereof as to which a Canadian Borrower has not duly specified an interest rate as provided herein shall be deemed a Canadian Base Rate Loan. Subject to Section 5.1(b), any LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan or any portion thereof as to which the applicable Borrower has not duly specified an Interest Period as provided herein shall be deemed a LIBOR Rate Loan, SOFR Loan or a CDOR Rate Loan with an Interest Period of one (1) month.

(b) Default Rate. Subject to Section 10.3, (i) immediately upon the occurrence and during the continuance of an Event of Default under Section 10.1(a), (b), (i) or (j), or (ii) at the election of the Required Lenders (or the Administrative Agent at the direction of the Required Lenders), upon the occurrence and during the continuance of any other Event of Default, (A) the Borrowers shall no longer have the option to request LIBOR Rate Loans, SOFR Loans, CDOR Rate Loans, Swingline Loans or Letters of Credit, (B) all outstanding LIBOR Rate Loans shall bear interest at a rate per annum of two percent (2%) in excess of the rate (including the Applicable Margin) then applicable to LIBOR Rate Loans until the end of the applicable Interest Period and thereafter at a rate equal to two percent (2%) in excess of the rate (including the Applicable Margin) then applicable to Base Rate Loans, (C) all outstanding SOFR Loans shall bear interest

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at a rate per annum of two percent (2%) in excess of the rate (including the Applicable Margin) then applicable to SOFR Loans until the end of the applicable Interest Period and thereafter at a rate equal to two percent (2%) in excess of the rate (including the Applicable Margin) then applicable to Base Rate Loans, (D) all outstanding CDOR Rate Loans shall bear interest at a rate per annum of two percent (2%) in excess of the rate (including the Applicable Margin) then applicable to CDOR Rate Loans until the end of the applicable Interest Period and thereafter at a rate equal to two percent (2%) in excess of the rate (including the Applicable Margin) then applicable to Canadian Base Rate Loans, (DE) all outstanding Base Rate Loans and other US Obligations arising hereunder or under any other Loan Document shall bear interest at a rate per annum equal to two percent (2%) in excess of the rate (including the Applicable Margin) then applicable to Base Rate Loans or such other US Obligations arising hereunder or under any other Loan Document, (EF) all outstanding Canadian Base Rate Loans and other Canadian Obligations arising hereunder or under any other Loan Document shall bear interest at a rate per annum equal to two percent (2%) in excess of the rate (including the Applicable Margin) then applicable to Canadian Base Rate Loans or such other Canadian Obligations arising hereunder or under any other Loan Document, and (FG) all accrued and unpaid interest shall be due and payable on demand of the Administrative Agent. Interest shall continue to accrue on the Obligations after the filing by or against any Borrower of any petition seeking any relief in bankruptcy or under any Debtor Relief Law.

(c) Interest Payment and Computation.

(xvii) Interest on (A) each Base Rate Loan and each Canadian Base Rate Loan shall be due and payable in arrears on the last Business Day of each calendar quarter commencing December 31, 2021; (B) each US Swingline Loan and each Canadian Swingline Loan shall be due and payable in arrears on the last Business Day of each calendar quarter commencing December 31, 2021; and (C) each LIBOR Rate Loan, SOFR Loan and CDOR Rate Loan shall be due and payable on the last day of each Interest Period applicable thereto, and if such Interest Period extends over three (3) months, at the end of each three (3) month interval during such Interest Period; provided that (i) in the event of any repayment or prepayment of any SOFR Loan, accrued interest on the principal amount repaid or prepaid shall be payable on the date of such repayment or prepayment and (ii) in the event of any conversion of any SOFR Loan prior to the end of the Interest Period therefor, accrued interest on such Loan shall be payable on the effective date of such conversion. All computations of interest for Base Rate Loans when the Base Rate is determined by the Prime Rate, all computations of interest for Canadian Base Rate Loans and all computations of interest for CDOR Rate Loans shall be made on the basis of a year of 365 or 366 days, as applicable, and actual days elapsed. All other computations of fees and interest provided hereunder shall be made on the basis of a 360-day year and actual days elapsed (which results in more fees or interest, as applicable, being paid than if computed on the basis of a 365/366-day year).

(xviii) Whenever any amount is payable under this Agreement or any other Loan Document by the Canadian Borrowers as interest or as a fee which requires the calculation of an amount using a percentage per annum, each party to this Agreement acknowledges and agrees that such amount shall be calculated as of the date payment is due without application of the “deemed reinvestment principle” or the “effective yield method” (e.g., when interest is calculated and payable monthly, the rate of interest payable per month is 1/12 of the stated rate of interest per annum).

(xix) For the purposes of the Interest Act (Canada) and disclosure under such Act, whenever interest to be paid under this Agreement or any other Loan Document is to be calculated on the basis of a year of 365 days or any other period of time that is less than a calendar year, the yearly rate of interest to which the rate determined pursuant to such calculation is equivalent is the rate so determined multiplied by the actual number of days in the calendar year in which the same is to be ascertained and divided by either 365 or such other period of time, as the case may be.

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(d) Maximum Rate.

(xx) In no contingency or event whatsoever shall the aggregate of all amounts deemed interest under this Agreement charged or collected pursuant to the terms of this Agreement exceed the highest rate permissible under any Applicable Law which a court of competent jurisdiction shall, in a final determination, deem applicable hereto. In the event that such a court determines that the Lenders have charged or received interest hereunder in excess of the highest applicable rate, the rate in effect hereunder shall automatically be reduced to the maximum rate permitted by Applicable Law and the Lenders shall at the Administrative Agent’s option (A) promptly refund to the applicable Borrowers any interest received by the Lenders in excess of the maximum lawful rate or (B) apply such excess to the principal balance of the US Obligations or the Canadian Obligations, as applicable. It is the intent hereof that the Borrowers not pay or contract to pay, and that neither the Administrative Agent nor any Lender receive or contract to receive, directly or indirectly in any manner whatsoever, interest in excess of that which may be paid by the applicable Borrower under Applicable Law.

(xxi) If any provision of this Agreement or of any of the other Loan Documents would obligate the Canadian Borrowers or any other Canadian Credit Party to make any payment of interest or other amount payable to any Lender, in an amount or calculated at a rate which would result in a receipt by such Lender of interest at a criminal rate (as such terms are construed under the Criminal Code (Canada)) then, notwithstanding such provisions, such amount or rate shall be deemed to have been adjusted with retroactive effect to the maximum amount or rate of interest, as the case may be, as would not be so prohibited by law or so result in a receipt by such Lender of interest at a criminal rate, such adjustment to be effected, to the extent necessary, as follows: (A) firstly, by reducing the amount or rate of interest required to be paid to such Lender on Canadian Revolving Credit Loans or Canadian Swingline Loans, as applicable, and (B) thereafter, by reducing any fees, commissions, premiums and other amounts required to be paid to such Lender, which would constitute “interest” for purposes of Section 347 of the Criminal Code (Canada). Any amount or rate of interest referred to in this Section 5.1 shall be determined in accordance with generally accepted actuarial practices and principles as an effective annual rate of interest over the term that the applicable Canadian Revolving Credit Loan or Canadian Swingline Loan remains outstanding on the assumption that any charges, fees or expenses that fall within the meaning of “interest” (as defined in the Criminal Code (Canada)) shall, if they relate to a specific period of time, be pro-rated over that period of time and otherwise be pro-rated over the period from the Closing Date to the date set out in clause (a) of the definition of “Revolving Credit Maturity Date” and, in the event of a dispute, a certificate of a Fellow of the Canadian Institute of Actuaries appointed by Administrative Agent shall be conclusive for the purposes of such determination.

(e) Term SOFR Benchmark Replacement Conforming Changes. In connection with the use or administration of Term SOFR, the Administrative Agent (in consultation with Centuri) will have the right to make Benchmark Replacement Conforming Changes from time to time and, notwithstanding anything to the contrary herein or in any other Loan Document, any amendments implementing such Benchmark Replacement Conforming Changes will become effective without any further action or consent of any other party to this Agreement or any other Loan Document. The Administrative Agent will promptly notify the US Borrower and the Lenders of the effectiveness of any Benchmark Replacement Conforming Changes in connection with the use or administration of Term SOFR.

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SECTION 5.2 Notice and Manner of Conversion or Continuation of Loans

. Provided that no Default or Event of Default has occurred and is then continuing:

(a) the US Borrowers shall have the option to (a) convert at any time all or any portion of any outstanding Term Loans that are Base Rate Loans (other than US Swingline Loans) in a principal amount equal to $3,000,000 or any whole multiple of $500,000 in excess thereof into one or more LIBOR Rate Loans, (b) convert at any time all or any portion of any outstanding Revolving Credit Loans that are Base Rate Loans (other than US Swingline Loans) in a principal amount equal to $3,000,000 or any whole multiple of $500,000 in excess thereof into one or more SOFR Loans, and (bc) upon the expiration of any Interest Period, (i) convert all or any part of its outstanding LIBOR Rate Loans or SOFR Loans in a principal amount equal to $1,000,000 or a whole multiple of $100,000 in excess thereof into Base Rate Loans (other than Swingline Loans) or, (ii) continue such LIBOR Rate Loans as LIBOR Rate Loans or (iii) continue such SOFR Loans as SOFR Loans; and

(b) the Canadian Borrowers shall have the option to (a) convert at any time all or any portion of any outstanding Canadian Base Rate Loans (other than Canadian Swingline Loans) in a principal amount equal to C$1,000,000 or any whole multiple of C$100,000 in excess thereof into one or more CDOR Rate Loans and (b) upon the expiration of any Interest Period for such CDOR Rate Loans, (i) convert all or any part of its outstanding CDOR Rate Loans in a principal amount equal to C$1,000,000 or a whole multiple of C$100,000 in excess thereof into Canadian Base Rate Loans (other than Canadian Swingline Loans) or (ii) continue such CDOR Rate Loans as CDOR Rate Loans.

Whenever any Borrower desires to convert or continue Loans as provided above, such Borrower shall give the Administrative Agent irrevocable prior written notice in the form attached as Exhibit E (a “Notice of Conversion/Continuation”) not later than 11:00 a.m. three (3) Business Days before (or three (3) US Government Securities Business Days before the day of a proposed conversion to or continuation of SOFR Loans or four (4) Business Days before the day of a proposed conversion to or continuation of CDOR Rate Loans) the day on which a proposed conversion or continuation of such Loan is to be effective specifying (A) the Loans to be converted or continued, and, in the case of any LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan to be converted or continued, the last day of the Interest Period therefor, (B) the effective date of such conversion or continuation (which shall be a Business Day), (C) the principal amount of such Loans to be converted or continued, and (D) the Interest Period to be applicable to such converted or continued LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan. If the applicable Borrower fails to give a timely Notice of Conversion/Continuation prior to the end of the Interest Period for any LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan, then the applicable LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan shall automatically continue as a LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan (in each case having the same Interest Period as the then expiring Interest Period), as applicable. Any such automatic continuation shall be effective as of the last day of the Interest Period then in effect with respect to the applicable LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan. If the applicable Borrower requests a conversion to, or continuation of, LIBOR Rate Loans, SOFR Loans or CDOR Rate Loans, but fails to specify an Interest Period, it will be deemed to have specified an Interest Period of one month in the case of a conversion and an Interest Period that is the same as the then expiring Interest Period in the case of a continuation. Notwithstanding anything to the contrary herein, a Swingline Loan may not be converted to a LIBOR Rate Loan, SOFR Loan or CDOR Rate Loan. The Administrative Agent shall promptly notify the affected Lenders of such Notice of Conversion/Continuation.

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SECTION 5.3 Fees.

(z) Commitment Fee. Commencing on the Closing Date, subject to Section 5.15(a)(iii)(A), the US Borrowers shall pay to the Administrative Agent, for the account of the Revolving Credit Lenders, a non-refundable commitment fee (the “Commitment Fee”) at a rate per annum equal to the Applicable Margin on the average daily unused portion of the Revolving Credit Commitment of the Revolving Credit Lenders (other than the Defaulting Lenders, if any); provided, that the amount of outstanding Swingline Loans shall not be considered usage of the Revolving Credit Commitment for the purpose of calculating the Commitment Fee. The Commitment Fee shall be payable in arrears on the last Business Day of each calendar quarter during the term of this Agreement commencing December 31, 2021 and ending on the date upon which all Obligations (other than contingent indemnification obligations not then due) arising under the Revolving Credit Facility shall have been indefeasibly and irrevocably paid and satisfied in full, all Letters of Credit have been terminated or expired (or been Cash Collateralized) and the Revolving Credit Commitment has been terminated. The Commitment Fee shall be distributed by the Administrative Agent to the Revolving Credit Lenders (other than any Defaulting Lender) pro rata in accordance with such Revolving Credit Lenders’ respective Revolving Credit Commitment Percentages.

(aa) Other Fees. The Borrowers shall pay to the Arrangers and the Administrative Agent for their own respective accounts fees in the amounts and at the times specified in any Fee Letter as applicable. The Borrowers shall pay to the Lenders such fees as shall have been separately agreed upon in writing in the amounts and at the times so specified.

SECTION 5.4 Manner of Payment

(a) Payments made by the Borrowers. Each payment by a Borrower on account of the principal of or interest on the Loans or of any fee, commission or other amounts (including the Reimbursement Obligations) payable to the Lenders under this Agreement shall be made not later than 1:00 p.m. on the date specified for payment under this Agreement to the Administrative Agent at the Administrative Agent’s Office for the account of the Lenders entitled to such payment, in immediately available funds and shall be made without any set off, counterclaim or deduction whatsoever. Any payment received after such time but before 2:00 p.m. on such day shall be deemed a payment on such date for the purposes of Section 10.1, but for all other purposes shall be deemed to have been made on the next succeeding Business Day. Any payment received after 2:00 p.m. shall be deemed to have been made on the next succeeding Business Day for all purposes. Upon receipt by the Administrative Agent of each such payment, the Administrative Agent shall distribute to each such Lender at its address for notices set forth herein its Commitment Percentage in respect of the relevant Credit Facility (or other applicable share as provided herein) of such payment and shall wire advice of the amount of such credit to each Lender. Each payment to the Administrative Agent on account of the principal of or interest on the Swingline Loans or of any fee, commission or other amounts payable to the applicable Swingline Lender shall be made in like manner, but for the account of the applicable Swingline Lender. Each payment to the Administrative Agent of any Issuing Lender’s fees or L/C Participants’ commissions shall be made in like manner, but for the account of such Issuing Lender or the L/C Participants, as the case may be. Each payment to the Administrative Agent of Administrative Agent’s fees or expenses shall be made for the account of the Administrative Agent and any amount payable to any Lender under Sections 5.9, 5.10, 5.11 or 12.3 shall be paid to the Administrative Agent for the account of the applicable Lender. Subject to the definition of Interest Period, if any payment under this Agreement shall be specified to be made upon a day which is not a Business Day, it shall be made on the next succeeding day which is a Business Day and such extension of time shall in such case be included in computing any interest if payable along with such payment.

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(b) Defaulting Lenders. Notwithstanding the foregoing, if there exists a Defaulting Lender each payment by any Borrower to such Defaulting Lender hereunder shall be applied in accordance with Section 5.15(a)(ii).

SECTION 5.5 Evidence of Indebtedness.

(a) Extensions of Credit. The Extensions of Credit made by each Lender and each Issuing Lender shall be evidenced by one or more accounts or records maintained by such Lender or such Issuing Lender and by the Administrative Agent in the ordinary course of business. The accounts or records maintained by the Administrative Agent and each Lender or the applicable Issuing Lender shall be conclusive absent manifest error of the amount of the Extensions of Credit made by the Lenders or such Issuing Lender to the applicable Borrowers and their applicable respective Subsidiaries and the interest and payments thereon. Any failure to so record or any error in doing so shall not, however, limit or otherwise affect the obligation of the Borrowers hereunder to pay any amount owing with respect to the Obligations. In the event of any conflict between the accounts and records maintained by any Lender or any Issuing Lender and the accounts and records of the Administrative Agent in respect of such matters, the accounts and records of the Administrative Agent shall control in the absence of manifest error. Upon the request of any Lender made through the Administrative Agent, the applicable Borrower shall execute and deliver to such Lender (through the Administrative Agent) a US Revolving Credit Note, Canadian Revolving Credit Note, a US Term Loan Note, a Canadian Term Loan Note, US Swingline Note and/or Canadian Swingline Note, as applicable, which shall evidence such Lender’s Revolving Credit Loans, Term Loans and/or Swingline Loans, as applicable, in addition to such accounts or records. Each Lender may attach schedules to its Notes and endorse thereon the date, amount and maturity of its Loans and payments with respect thereto.

(b) Participations. In addition to the accounts and records referred to in subsection (a), each Revolving Credit Lender and the Administrative Agent shall maintain in accordance with its usual practice accounts or records evidencing the purchases and sales by such Revolving Credit Lender of participations in Letters of Credit and Swingline Loans. In the event of any conflict between the accounts and records maintained by the Administrative Agent and the accounts and records of any Revolving Credit Lender in respect of such matters, the accounts and records of the Administrative Agent shall control in the absence of manifest error.

SECTION 5.6 Sharing of Payments by ▇▇▇▇▇▇▇

. If any Lender shall, by exercising any right of setoff or counterclaim or otherwise, obtain payment in respect of any principal of or interest on any of its Loans or other obligations hereunder resulting in such ▇▇▇▇▇▇’s receiving payment of a proportion of the aggregate amount of its Loans and accrued interest thereon or other such obligations (other than pursuant to Sections 5.9, 5.10, 5.11 or 12.3) greater than its pro rata share thereof as provided herein, then the Lender receiving such greater proportion shall (a) notify the Administrative Agent of such fact, and (b) purchase (for cash at face value) participations in the Loans and such other obligations of the other Lenders, or make such other adjustments as shall be equitable, so that the benefit of all such payments shall be shared by the Lenders ratably in accordance with the aggregate amount of principal of and accrued interest on their respective Loans and other amounts owing them; provided that:

(xxii) if any such participations are purchased and all or any portion of the payment giving rise thereto is recovered, such participations shall be rescinded and the purchase price restored to the extent of such recovery, without interest, and

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(xxiii) the provisions of this paragraph shall not be construed to apply to (A) any payment made by the Borrowers pursuant to and in accordance with the express terms of this Agreement (including the application of funds arising from the existence of a Defaulting Lender), (B) the application of Cash Collateral provided for in Section 5.14 or (C) any payment obtained by a Lender as consideration for the assignment of or sale of a participation in any of its Loans or participations in Swingline Loans and Letters of Credit to any assignee or participant, other than to any of the Consolidated Companies or their Affiliates (as to which this Section 5.6 shall apply).

Each Credit Party consents to the foregoing and agrees, to the extent it may effectively do so under Applicable Law, that any Lender acquiring a participation pursuant to the foregoing arrangements may exercise against each Credit Party rights of setoff and counterclaim with respect to such participation as fully as if such Lender were a direct creditor of each Credit Party in the amount of such participation.

SECTION 5.7 Administrative Agent’s Clawback.

(a) Funding by ▇▇▇▇▇▇▇; Presumption by Administrative Agent. Unless the Administrative Agent shall have received notice from a Lender (i) in the case of Base Rate Loans, not later than 12:00 noon on the date of any proposed borrowing, (ii) in the case of Canadian Revolving Credit Loans, not later than 12:00 noon one (1) Business Day before the date of any proposed borrowing and (iii) otherwise, prior to the proposed date of any borrowing that such Lender will not make available to the Administrative Agent such ▇▇▇▇▇▇’s share of such borrowing, the Administrative Agent may assume that such Lender has made such share available on such date in accordance with Sections 2.3(b) and 4.2 and may, in reliance upon such assumption, make available to the applicable Borrower a corresponding amount. In such event, if a Lender has not in fact made its share of the applicable borrowing available to the Administrative Agent, then the applicable Lender and the applicable Borrower severally agree to pay to the Administrative Agent forthwith on demand such corresponding amount with interest thereon, for each day from and including the date such amount is made available to the applicable Borrower to but excluding the date of payment to the Administrative Agent, (A) in the case of a payment to be made by such Lender, (1) with respect to any Loan denominated in Dollars, at the greater of (x) the daily average Federal Funds Rate and (y) a rate determined by the Administrative Agent in accordance with banking industry rules on interbank compensation and (2) with respect to any Loan denominated in Canadian Dollars, at the greater of (x) a rate equal to the Administrative Agent’s aggregate marginal cost (including the cost of maintaining any required reserves or deposit insurance and of any fees, penalties, overdraft charges or other costs or expenses incurred by the Administrative Agent as a result of the failure to deliver funds hereunder) of carrying such amount and (y) a rate determined by the Administrative Agent in accordance with banking industry rules on interbank compensation and (B) in the case of a payment to be made by such Borrower, (1) with respect to any Loan denominated in Dollars, the Base Rate and (2) with respect to any Loan denominated in Canadian Dollars, the Canadian Base Rate. If the applicable Borrower and such Lender shall pay such interest to the Administrative Agent for the same or an overlapping period, the Administrative Agent shall promptly remit to such Borrower the amount of such interest paid by such Borrower for such period. If such Lender pays its share of the applicable borrowing to the Administrative Agent, then the amount so paid shall constitute such Lender’s Loan included in such borrowing. Any payment by any Borrower shall be without prejudice to any claim such Borrower may have against a Lender that shall have failed to make such payment to the Administrative Agent.

(b) Payments by the Borrowers; Presumptions by Administrative Agent. Unless the Administrative Agent shall have received notice from the applicable Borrower prior to the date on which any payment is due to the Administrative Agent for the account of the Lenders, any Issuing Lender or any Swingline Lender hereunder that the applicable Borrower will not make such payment, the Administrative Agent may assume that such Borrower has made such payment on such date in accordance herewith and

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may, in reliance upon such assumption, distribute to the Lenders, such Issuing Lender or such Swingline Lender, as the case may be, the amount due. In such event, if the applicable Borrower has not in fact made such payment, then each of the Lenders, each Issuing Lender or each Swingline Lender, as the case maybe, severally agrees to repay to the Administrative Agent forthwith on demand the amount so distributed to such Lender, Issuing Lender or Swingline Lender, with interest thereon, for each day from and including the date such amount is distributed to it to but excluding the date of payment to the Administrative Agent, (i) with respect to any Extension of Credit (other than any Canadian Revolving Credit Loan, any Canadian Swingline Loan and, to the extent applicable, any Incremental Term Loan made to the Canadian Borrowers), at the greater of the Federal Funds Rate and a rate determined by the Administrative Agent in accordance with banking industry rules on interbank compensation and (ii) with respect to any Canadian Revolving Credit Loan, any Canadian Swingline Loan and, to the extent applicable, any Incremental Term Loan made to the Canadian Borrowers, at a rate equal to the Administrative Agent’s aggregate marginal cost (including the cost of maintaining any required reserves or deposit insurance and of any fees, penalties, overdraft charges or other costs or expenses incurred by the Administrative Agent as a result of the failure to deliver funds hereunder) of carrying such amount.

(c) Nature of Obligations of Lenders Regarding Extensions of Credit. The obligations of the Lenders under this Agreement to make the Loans and issue or participate in Letters of Credit and to make payments under this Section, Section 5.11(e), Section 11.11, Section 12.3(c) or Section 12.7, as applicable, are several and are not joint or joint and several. The failure of any Lender to make available its Commitment Percentage of any Loan requested by any Borrower shall not relieve it or any other Lender of its obligation, if any, hereunder to make its Commitment Percentage of such Loan available on the borrowing date, but no Lender shall be responsible for the failure of any other Lender to make its Commitment Percentage of such Loan available on the borrowing date.

SECTION 5.8 Changed Circumstances.

(a) Circumstances Affecting LIBOR Rate, SOFR or CDOR Rate Availability. Subject to clause (c) below, in connection with any request for (x) a LIBOR Rate Loan (or a Base Rate Loan as to which the interest rate is determined with reference to LIBOR) or a conversion to or continuation thereof), (y) a SOFR Loan (or a Base Rate Loan as to which the interest rate is determined with reference to Adjusted Term SOFR) or a conversion to or continuation thereof or (yz) a CDOR Rate Loan (or a Canadian Base Rate Loan as to which the interest rate is determined with reference to the CDOR Rate or a conversion thereof) or otherwise, if for any reason

(xxiv) with respect to a proposed LIBOR Rate Loan, the Administrative Agent shall determine (which determination shall be conclusive and binding absent manifest error) that Dollar deposits are not being offered to banks in the London interbank Eurodollar market for the applicable amount and Interest Period of such Loan,

(xxv) the Administrative Agent shall determine (which determination shall be conclusive and binding absent manifest error) that reasonable and adequate means do not exist for ascertaining (A) the LIBOR Rate for such Interest Period with respect to a proposed LIBOR Rate Loan (or any Base Rate Loan as to which the interest rate is determined with reference to LIBOR), (B) Adjusted Term SOFR for the applicable Interest Period with respect to a proposed SOFR Loan on or prior to the first date of such Interest Period or (BC) the CDOR Rate for such Interest Period with respect to a proposed CDOR Rate Loan (or any Canadian Base Rate Loan as to which the interest rate is determined with reference to the CDOR Rate), or

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(xxvi) the Required Lenders shall determine (which determination shall be conclusive and binding absent manifest error) that the LIBOR Rate, Adjusted Term SOFR or CDOR Rate, as applicable, does not adequately and fairly reflect the cost to such Lenders of making or maintaining such Loans during such Interest Period,

then, in each case, the Administrative Agent shall promptly give notice thereof to Centuri. Thereafter, until the Administrative Agent notifies Centuri that such circumstances no longer exist, the obligation of the Lenders to make LIBOR Rate Loans (or Base Rate Loans as to which the interest rate is determined with reference to LIBOR), SOFR Loans or CDOR Rate Loans (or Canadian Base Rate Loans as to which the interest rate is determined with reference to CDOR), as applicable, and the right of any Borrower to convert any Loan to or continue any Loan as a LIBOR Rate Loan (or a Base Rate Loan as to which the interest rate is determined with reference to LIBOR), SOFR Loan (or a Base Rate Loan as to which the interest rate is determined with reference to Adjusted Term SOFR) or a CDOR Rate Loan (or Canadian Base Rate Loan as to which the interest rate is determined with reference to CDOR), as applicable, shall be suspended, and (i) in the case of LIBOR Rate Loans, the applicable Borrower shall either (A) repay in full (or cause to be repaid in full) the then outstanding principal amount of each such LIBOR Rate Loan made to it together with accrued interest thereon (subject to Section 5.1(d)), on the last day of the then current Interest Period applicable to such LIBOR Rate Loan; or (B) convert the then outstanding principal amount of each such LIBOR Rate Loan made to it to a Base Rate Loan as to which the interest rate is not determined by reference to LIBOR as of the last day of such Interest Period; (ii) in the case of SOFR Loans, the applicable Borrower shall either (A) repay in full (or cause to be repaid in full) the then outstanding principal amount of each such SOFR Loan made to it together with accrued interest thereon (subject to Section 5.1(d)), on the last day of the then current Interest Period applicable to such SOFR Loan; or (B) convert the then outstanding principal amount of each such SOFR Loan made to it to a Base Rate Loan as to which the interest rate is not determined by reference to Adjusted Term SOFR as of the last day of such Interest Period; (iii) in the case of Base Rate Loans as to which the interest rate is determined by reference to LIBOR or Adjusted Term SOFR (as applicable), the US Borrowers shall convert the then outstanding principal amount of each such Loan to a Base Rate Loan as to which the interest rate is not determined by reference to LIBOR or Adjusted Term SOFR (as applicable) as of the last day of such Interest Period; or (iiiiv) in the case of CDOR Rate Loans (or Canadian Base Rate Loans as to which the interest rate is determined by reference to the CDOR Rate), the Canadian Borrowers shall convert the then outstanding principal amount of each such Loan to a Canadian Base Rate Loan as to which the interest rate is not determined by reference to the CDOR Rate.

(b) Laws Affecting LIBOR Rate, SOFR or CDOR Rate Availability. If, after the date hereof, the introduction of, or any change in, any Applicable Law or any change in the interpretation or administration thereof by any Governmental Authority, central bank or comparable agency charged with the interpretation or administration thereof, or compliance by any of the Lenders (or any of their respective Lending Offices) with any request or directive (whether or not having the force of law) of any such Governmental Authority, central bank or comparable agency, shall make it unlawful or impossible for any of the Lenders (or any of their respective Lending Offices) to honor its obligations hereunder to make or maintain (x) any LIBOR Rate Loan (or any Base Rate Loan as to which the interest rate is determined by reference to LIBOR), (y) any SOFR Loan or to determine or charge interest based upon SOFR, the Term SOFR Reference Rate, Adjusted Term SOFR or Term SOFR or (yz) any CDOR Rate Loan (or any Canadian Base Rate Loan as to which the interest rate is determined by reference to the CDOR Rate), such Lender shall promptly give notice thereof to the Administrative Agent and the Administrative Agent shall promptly give notice to Centuri and the other Lenders. Thereafter, until the Administrative Agent notifies Centuri that such circumstances no longer exist:

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(xxvii) the obligations of the Lenders to make LIBOR Rate Loans (or Base Rate Loans as to which the interest rate is determined by reference to LIBOR), SOFR Loans or CDOR Rate Loans (or Canadian Base Rate Loans as to which the interest rate is determined by reference to the CDOR Rate), as applicable, and the right of the Borrowers to convert any Loan to a LIBOR Rate Loan or SOFR Loan (as applicable) or continue any Loan as a LIBOR Rate Loan (or a Base Rate Loan as to which the interest rate is determined by reference to LIBOR) or SOFR Loan (or a Base Rate Loan as to which the interest rate is determined with reference to Adjusted Term SOFR) (as applicable), or to convert any Loan to a CDOR Rate Loan (or any Canadian Base Rate Loan as to which the interest rate is determined by reference to the CDOR Rate), shall be suspended and thereafter the applicable Borrower may select only Base Rate Loans and Canadian Base Rate Loans, as applicable, as to which the interest rate is not determined by reference to LIBOR, Adjusted Term SOFR or CDOR hereunder,

(xxviii) all Base Rate Loans shall cease to be determined by reference to LIBOR or Adjusted Term SOFR, as applicable, and/or all Canadian Base Rate Loans shall cease to be determined by reference to CDOR, as applicable, and

(xxix) if any of the Lenders may not lawfully continue to maintain a LIBOR Rate Loan or SOFR Loan, as applicable, to the end of the then current Interest Period applicable thereto, the applicable Loan shall immediately be converted to a Base Rate Loan as to which the interest rate is not determined by reference to LIBOR or Adjusted Term SOFR, as applicable, for the remainder of such Interest Period. Each Lender agrees to designate a different Lending Office or assign its rights and obligations hereunder to another of its officers, branches or affiliates if such designation or assignment will avoid the need for such notice and will not, in the good faith judgment of such Lender, otherwise be materially disadvantageous to such Lender. Each Borrower hereby agrees to pay all reasonable costs and expenses incurred by such Lender in connection with any such designation or assignment.

(c) Benchmark Replacement Setting.

(xxx) (A) Benchmark Replacement (LIBOR). Notwithstanding anything to the contrary herein or in any other Loan Document (and any Hedge Agreement shall be deemed not to be a “Loan Document” for purposes of this Section 5.8(c)) if a Benchmark Transition Event (LIBOR) or an Early Opt-in Election, as applicable, and its related Benchmark Replacement Date (LIBOR) have occurred prior to the Reference Time in respect of any setting of the then-current Benchmark, then (x) if a Benchmark Replacement is determined in accordance with clause (a)(1) or (a)(2) of the definition of “Benchmark Replacement (LIBOR)” for such Benchmark Replacement Date (LIBOR), such Benchmark Replacement will replace such Benchmark for all purposes hereunder and under any Loan Document in respect of such Benchmark setting and subsequent Benchmark settings without any amendment to, or further action or consent of any other party to, this Agreement or any other Loan Document and (y) if a Benchmark Replacement is determined in accordance with clause (a)(3) of the definition of “Benchmark Replacement (LIBOR)” for such Benchmark Replacement Date (LIBOR), such Benchmark Replacement will replace such Benchmark for all purposes hereunder and under any Loan Document in respect of any Benchmark setting at or after 5:00 p.m. (New York City time) on the fifth (5th) Business Day after the date notice of such Benchmark Replacement is provided to the Lenders without any amendment to, or further action or consent of any other party to, this Agreement or any other Loan Document so long as the Administrative Agent has not received, by such time, written notice of objection to such Benchmark Replacement from Lenders comprising the Required Lenders. If an Unadjusted Benchmark Replacement is Daily Simple SOFR, all interest payments will be payable on a monthly basis.

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(B) Benchmark Replacement (Non-LIBOR). Notwithstanding anything to the contrary herein or in any other Loan Document (and any Hedge Agreement shall be deemed not to be a “Loan Document” for purposes of this Section 5.8(c)), upon the occurrence of a Benchmark Transition Event (Non-LIBOR), the Administrative Agent and the Borrowers may amend this Agreement to replace the then-current Benchmark with a Benchmark Replacement. Any such amendment with respect to a Benchmark Transition Event (Non- LIBOR) will become effective at 5:00 p.m. on the fifth (5th) Business Day after the Administrative Agent has posted such proposed amendment to all affected Lenders and the Borrowers so long as the Administrative Agent has not received, by such time, written notice of objection to such amendment from Lenders comprising the Required Lenders. No replacement of a Benchmark with a Benchmark Replacement pursuant to this Section 5.8(c)(i)(B) will occur prior to the applicable Benchmark Transition Start Date.

(C) (B) Notwithstanding anything to the contrary herein or in any other Loan Document, if a Term SOFR Transition Event and its related Benchmark Replacement Date (LIBOR) have occurred prior to the Reference Time in respect of any setting of the then- current Benchmark, then the applicable Benchmark Replacement will replace the then- current Benchmark for all purposes hereunder or under any Loan Document in respect of such Benchmark setting and subsequent Benchmark settings, without any amendment to, or further action or consent of any other party to, this Agreement or any other Loan Document; provided that this clause (B) shall not be effective unless the Administrative Agent has delivered to the Lenders and the Borrower a Term SOFR Notice. For the avoidance of doubt, the Administrative Agent shall not be required to deliver a Term SOFR Notice after a Term SOFR Transition Event and may elect or not elect to do so in its sole discretion.

(xxxi) Benchmark Replacement Conforming Changes. In connection with the use, administration, adoption or implementation of a Benchmark Replacement, the Administrative Agent will have the right to make Benchmark Replacement Conforming Changes from time to time and, notwithstanding anything to the contrary herein or in any other Loan Document, any amendments implementing such Benchmark Replacement Conforming Changes will become effective without any further action or consent of any other party to this Agreement or any other Loan Document.

(xxxii) Notices; Standards for Decisions and Determinations. The Administrative Agent will promptly notify the Borrower and the Lenders of (A) any occurrence of a Benchmark Transition Event (LIBOR), a Term SOFR Transition Event or an Early Opt-in Election, as applicable, and its related Benchmark Replacement Date (LIBOR), (B) the implementation of any Benchmark Replacement, (C) the effectiveness of any Benchmark Replacement Conforming Changes, (D) the removal or reinstatement of any tenor of a Benchmark pursuant to Section 5.8(c)(iv) below and (E) the commencement or conclusion of any Benchmark Unavailability Period. Any determination, decision or election that may be made by the Administrative Agent or, if applicable, any Lender (or group of Lenders) pursuant to this Section 5.8(c), including any determination with respect to a tenor, rate or adjustment or of the occurrence or non-occurrence of an event, circumstance or date and any decision to take or refrain from taking any action or any selection, will be conclusive and binding absent manifest error and may be made in its or their sole

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discretion (and made in a manner substantially consistent with determinations being made for similarly situated customers of such Administrative Agent under agreements having provisions similar to this Section 5.8(c)) and without consent from any other party to this Agreement or any other Loan Document, except, in each case, as expressly required pursuant to this Section 5.8(c).

(xxxiii) Unavailability of Tenor of Benchmark. Notwithstanding anything to the contrary herein or in any other Loan Document, at any time (including in connection with the implementation of a Benchmark Replacement), (A) if the then-current Benchmark is a term rate (including the Term SOFR Reference Rate or USD LIBOR) and either (1) any tenor for such Benchmark is not displayed on a screen or other information service that publishes such rate from time to time as selected by the Administrative Agent in its reasonable discretion (and made in a manner substantially consistent with determinations being made for similarly situated customers of such Administrative Agent under agreements having provisions similar to this Section 5.8(c)) or (2) the regulatory supervisor for the administrator of such Benchmark has provided a public statement or publication of information announcing that any tenor for such Benchmark is or will be no longer representative, then the Administrative Agent may modify the definition of “Interest Period” for any Benchmark settings at or after such time to remove such unavailable or non- representative tenor and (B) if a tenor that was removed pursuant to clause (A) above either (1) is subsequently displayed on a screen or information service for a Benchmark (including a Benchmark Replacement) or (2) is not, or is no longer, subject to an announcement that it is or will be no longer be representative for a Benchmark (including a Benchmark Replacement), then the Administrative Agent may modify the definition of “Interest Period” for all Benchmark settings at or after such time to reinstate such previously removed tenor.

(xxxiv) Benchmark Unavailability Period. Upon Centuri’s receipt of notice of the commencement of a Benchmark Unavailability Period, the applicable Borrower may revoke any request for a borrowing of, conversion to or continuation of LIBOR Rate Loans or SOFR Loans (as applicable) to be made, converted or continued during any Benchmark Unavailability Period and, failing that, the applicable Borrower will be deemed to have converted any such request into a request for a borrowing of or conversion to Base Rate Loans. During any Benchmark Unavailability Period or at any time that a tenor for the then-current Benchmark is not an Available Tenor, the component of the Base Rate based upon the then-current Benchmark or such tenor for such Benchmark, as applicable, will not be used in any determination of the Base Rate.

(xxxv) London Interbank Offered Rate Benchmark Transition Event. On March 5, 2021, the IBA, the administrator of the London interbank offered rate, and the FCA, the regulatory supervisor of the IBA, made the Announcements that the final publication or representativeness date for Dollars for (I) 1-week and 2-month London interbank offered rate tenor settings will be December 31, 2021 and (II) overnight, 1-month, 3-month, 6month and 12-month London interbank offered rate tenor settings will be June 30, 2023. No successor administrator for the IBA was identified in such Announcements. The parties hereto agree and acknowledge that the Announcements resulted in the occurrence of a Benchmark Transition Event (LIBOR) with respect to the London interbank offered rate pursuant to the terms of this Agreement and that any obligation of the Administrative Agent to notify any parties of such Benchmark Transition Event (LIBOR) pursuant to clause (iii) of this Section 5.8(c) shall be deemed satisfied.

(d) Illegality. Subject to Section 5.12, if, in any applicable jurisdiction, the Administrative Agent, any Issuing Lender or any Lender or its Applicable Designee determines that any Applicable Law has made it unlawful, or that any Governmental Authority has asserted that it is unlawful, for the Administrative Agent, any Issuing Lender, any Lender or any Applicable Designee to (i) perform any of its

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obligations hereunder or under any other Loan Document, (ii) to fund or maintain its participation in any Loan or (iii) issue, make, maintain, fund or charge interest or fees with respect to any Extension of Credit to any Borrower that is a Foreign Subsidiary such Person shall promptly notify the Administrative Agent, then, upon the Administrative Agent notifying Centuri, and until such notice by such Person is revoked, any obligation of such Person to issue, make, maintain, fund or charge interest or fees with respect to any such Extension of Credit shall be suspended, and to the extent required by Applicable Law, cancelled. Upon receipt of such notice, the Credit Parties shall, (A) repay that Person’s participation in the Loans or other applicable Obligations on the last day of the Interest Period for each Loan or other Obligation occurring after the Administrative Agent has notified Centuri or, if earlier, the date specified by such Person in the notice delivered to the Administrative Agent (being no earlier than the last day of any applicable grace period permitted by Applicable Law) and (B) take all reasonable actions requested by such Person to mitigate or avoid such illegality.

SECTION 5.9 Indemnity

. Each Borrower hereby indemnifies each of the Lenders against any loss or expense (including any loss or expense arising from the liquidation or reemployment of funds obtained by it to maintain a LIBOR Rate Loan, a SOFR Loan or a CDOR Rate Loan or from fees payable to terminate the deposits from which such funds were obtained) which may arise or be attributable to each Lender’s obtaining, liquidating or employing deposits or other funds acquired to effect, fund or maintain any Loan (a) as a consequence of any failure by such Borrower to make any payment when due of any amount due hereunder in connection with a LIBOR Rate Loan, a SOFR Loan or a CDOR Rate Loan, (b) due to any failure of such Borrower to borrow, continue or convert on a date specified therefor in a Notice of Borrowing or Notice of Conversion/Continuation or (c) due to any payment, prepayment or conversion of any LIBOR Rate Loan, any SOFR Loan or any CDOR Rate Loan on a date other than the last day of the Interest Period therefor. The amount of such loss or expense shall be determined, in the applicable Lender’s sole discretion, based upon the assumption that such Lender funded its Commitment Percentage of the LIBOR Rate Loans in the London interbank market, SOFR Loans or the CDOR Rate Loans in the Canadian bankers’ acceptance market, as applicable, and using any reasonable attribution or averaging methods which such Lender deems appropriate and practical. A certificate of such Lender setting forth the basis for determining such amount or amounts necessary to compensate such Lender shall be forwarded to the applicable Borrower through the Administrative Agent and shall be conclusively presumed to be correct save for manifest error. The applicable Borrower shall pay such Lender the amount shown as due on any such certificate within ten (10) days after receipt thereof.

SECTION 5.10 Increased Costs.

(a) Increased Costs Generally. If any Change in Law shall:

(xxxvi) impose, modify or deem applicable any reserve, special deposit, compulsory loan, insurance charge or similar requirement against assets of, deposits with or for the account of, or advances, loans or other credit extended or participated in by, any Lender (except any reserve requirement reflected in the LIBOR Rate) or any Issuing Lender;

(xxxvii) subject any Recipient to any Taxes (other than (A) Indemnified Taxes, (B) Taxes described in clauses (b) through (e) of the definition of Excluded Taxes and (C) Connection Income Taxes) on its loans, loan principal, letters of credit, commitments, or other obligations, or its deposits, reserves, other liabilities or capital attributable thereto; or

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(i) impose on any Lender or any Issuing Lender or the London interbank market any other condition, cost or expense (other than Taxes) affecting this Agreement or Loans made by such Lender or any Letter of Credit or participation therein;

and the result of any of the foregoing shall be to increase the cost to such Lender, the Issuing Lender or such other Recipient of making, converting to, continuing or maintaining any Loan (or of maintaining its obligation to make any such Loan), or to increase the cost to such Lender, such Issuing Lender or such other Recipient of participating in, issuing or maintaining any Letter of Credit (or of maintaining its obligation to participate in or to issue any Letter of Credit), or to reduce the amount of any sum received or receivable by such Lender, such Issuing Lender or such other Recipient hereunder (whether of principal, interest or any other amount) then, upon written request of such Lender, such Issuing Lender or other Recipient, the Borrowers shall promptly pay to any such Lender, such Issuing Lender or other Recipient, as the case may be, such additional amount or amounts as will compensate such Lender, such Issuing Lender or other Recipient, as the case may be, for such additional costs incurred or reduction suffered.

(b) Capital Requirements. If any Lender or any Issuing Lender determines that any Change in Law affecting such Lender or such Issuing Lender or any Lending Office of such Lender or such Lender’s or such Issuing Lender’s holding company, if any, regarding capital or liquidity requirements, has or would have the effect of reducing the rate of return on such Lender’s or such Issuing Lender’s capital or on the capital of such Lender’s or such Issuing Lender’s holding company, if any, as a consequence of this Agreement, the Revolving Credit Commitment of such Lender or the Loans made by, or participations in Letters of Credit or Swingline Loans held by, such Lender, or the Letters of Credit issued by such Issuing Lender, to a level below that which such Lender or such Issuing Lender or such Lender’s or such Issuing Lender’s holding company could have achieved but for such Change in Law (taking into consideration such Lender’s or such Issuing Lender’s policies and the policies of such Lender’s or such Issuing Lender’s holding company with respect to capital adequacy or liquidity), then from time to time upon written request of such Lender or such Issuing Lender the Borrowers shall promptly pay to such Lender or such Issuing Lender, as the case may be, such additional amount or amounts as will compensate such Lender or such Issuing Lender or such Lender’s or such Issuing Lender’s holding company for any such reduction suffered.

(c) Certificates for Reimbursement. A certificate of a Lender, or an Issuing Lender or such other Recipient setting forth the amount or amounts necessary to compensate such Lender or such Issuing Lender, such other Recipient or any of their respective holding companies, as the case may be, as specified in paragraph (a) or (b) of this Section and delivered to the Borrowers, shall be conclusive absent manifest error. The Borrowers shall pay such Lender or such Issuing Lender or such other Recipient, as the case may be, the amount shown as due on any such certificate within ten (10) days after receipt thereof.

(d) Delay in Requests. Failure or delay on the part of any Lender or any Issuing Lender or such other Recipient to demand compensation pursuant to this Section shall not constitute a waiver of such Lender’s or such Issuing Lender’s or such other Recipient’s right to demand such compensation; provided that the Borrowers shall not be required to compensate any Lender or an Issuing Lender or any other Recipient pursuant to this Section for any increased costs incurred or reductions suffered more than six (6) months prior to the date that such Lender or such Issuing Lender or such other Recipient, as the case may be, notifies the Borrowers of the Change in Law giving rise to such increased costs or reductions, and of such Lender’s or such Issuing Lender’s or such other Recipient’s intention to claim compensation therefor (except that if the Change in Law giving rise to such increased costs or reductions is retroactive, then the nine-month period referred to above shall be extended to include the period of retroactive effect thereof).

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SECTION 5.11 Taxes.

(a) Defined Terms. For purposes of this Section 5.11, the term “Lender” includes any Issuing Lender and the term “Applicable Law” includes FATCA.

(b) Payments Free of Taxes. Any and all payments by or on account of any obligation of any Credit Party under any Loan Document shall be made without deduction or withholding for any Taxes, except as required by Applicable Law. If any Applicable Law (as determined in the good faith discretion of an applicable Withholding Agent) requires the deduction or withholding of any Tax from any such payment by a Withholding Agent, then the applicable Withholding Agent shall be entitled to make such deduction or withholding and shall timely pay the full amount deducted or withheld to the relevant Governmental Authority in accordance with Applicable Law and, if such Tax is an Indemnified Tax, then the sum payable by the applicable Credit Party shall be increased as necessary so that, after such deduction or withholding has been made (including such deductions and withholdings applicable to additional sums payable under this Section), the applicable Recipient receives an amount equal to the sum it would have received had no such deduction or withholding been made.

(c) Payment of Other Taxes by the Credit Parties. The Credit Parties shall timely pay to the relevant Governmental Authority in accordance with Applicable Law, or at the option of the Administrative Agent timely reimburse it for the payment of, any Other Taxes.

(d) Indemnification by the Credit Parties. With respect to any Indemnified Taxes arising from US Obligations, the US Credit Parties shall jointly and severally indemnify each Recipient, within ten (10) days after written demand therefor, for the full amount of any such Indemnified Taxes (including Indemnified Taxes imposed or asserted on or attributable to amounts payable under this Section) payable or paid by such Recipient or required to be withheld or deducted from a payment to such Recipient and any reasonable expenses arising therefrom or with respect thereto, whether or not such Indemnified Taxes were correctly or legally imposed or asserted by the relevant Governmental Authority. With respect to any Indemnified Taxes arising from Canadian Obligations, the Credit Parties shall jointly and severally indemnify each Recipient, within ten (10) days after written demand therefor, for the full amount of any such Indemnified Taxes (including Indemnified Taxes imposed on or asserted on or attributable to amounts payable under this Section) payable or paid by such Recipient or required to be withheld or deducted from a payment to such Recipient and any reasonable expenses arising therefrom or with respect thereto, whether or not such Indemnified Taxes were correctly or legally imposed or asserted by the relevant Governmental Authority. A certificate as to the amount of such payment or liability delivered to the Borrowers by a Recipient (with a copy to the Administrative Agent), or by the Administrative Agent on its own behalf or on behalf of a Recipient, shall be conclusive absent manifest error.

(e) Indemnification by the Lenders. Each Lender shall severally indemnify the Administrative Agent, within ten (10) days after demand therefor, for (i) any Indemnified Taxes attributable to such Lender (but only to the extent that any Credit Party has not already indemnified the Administrative Agent for such Indemnified Taxes and without limiting the obligation of the Credit Parties to do so), (ii) any Taxes attributable to such ▇▇▇▇▇▇’s failure to comply with the provisions of Section 12.9(d) relating to the maintenance of a Participant Register and (iii) any Excluded Taxes attributable to such Lender, in each case, that are payable or paid by the Administrative Agent in connection with any Loan Document, and any reasonable expenses arising therefrom or with respect thereto, whether or not such Taxes were correctly or legally imposed or asserted by the relevant Governmental Authority. A certificate as to the amount of such payment or liability delivered to any Lender by the Administrative Agent shall be conclusive absent manifest error. Each Lender hereby authorizes the Administrative Agent to set off and apply any and all amounts at any time owing to such Lender under any Loan Document or otherwise payable by the Administrative Agent to the Lender from any other source against any amount due to the Administrative Agent under this paragraph (e).

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(f) Evidence of Payments. As soon as practicable after any payment of Taxes by any Credit Party to a Governmental Authority pursuant to this Section 5.11, such Credit Party shall deliver to the Administrative Agent the original or a certified copy of a receipt issued by such Governmental Authority evidencing such payment, a copy of the return reporting such payment or other evidence of such payment reasonably satisfactory to the Administrative Agent.

(g) Status of Lenders.

(xxxviii) Any Lender that is entitled to an exemption from or reduction of withholding Tax with respect to payments made under any Loan Document shall deliver to Centuri and the Administrative Agent, at the time or times reasonably requested by Centuri or the Administrative Agent, such properly completed and executed documentation reasonably requested by Centuri or the Administrative Agent as will permit such payments to be made without withholding or at a reduced rate of withholding. In addition, any Lender, if reasonably requested by Centuri or the Administrative Agent, shall deliver such other documentation prescribed by Applicable Law or reasonably requested by Centuri or the Administrative Agent as will enable Centuri or the Administrative Agent to determine whether or not such Lender is subject to backup withholding or information reporting requirements. Notwithstanding anything to the contrary in the preceding two sentences, the completion, execution and submission of such documentation (other than such documentation set forth in Section 5.11(g)(ii)(A), (ii)(B) and (ii)(D) below) shall not be required if in the Lender’s reasonable judgment such completion, execution or submission would subject such Lender to any material unreimbursed cost or expense or would materially prejudice the legal or commercial position of such Lender.

(xxxix) Without limiting the generality of the foregoing:

(A) Any Lender that is a U.S. Person shall deliver to Centuri and the Administrative Agent on or prior to the date on which such Lender becomes a Lender under this Agreement (and from time to time thereafter upon the reasonable request of Centuri or the Administrative Agent), executed originals of IRS Form W-9 (or any successor form) certifying that such Lender is exempt from United States federal backup withholding tax;

(B) any Foreign Lender shall, to the extent it is legally entitled to do so, deliver to Centuri and the Administrative Agent (in such number of copies as shall be requested by the recipient) on or prior to the date on which such Foreign Lender becomes a Lender under this Agreement (and from time to time thereafter upon the reasonable request of Centuri or the Administrative Agent), whichever of the following is applicable:

(1) in the case of a Foreign Lender claiming the benefits of an income tax treaty to which the United States is a party (x) with respect to payments of interest under any Loan Document, executed copies of IRS Form W-8BEN (or any successor form) or W-8BEN-E (or any successor form), as applicable, establishing an exemption from, or reduction of, United States federal withholding Tax pursuant to the “interest” article of such tax treaty and (y) with respect to any other applicable payments under any Loan Document, IRS Form W-8BEN (or any successor form) or W-8BEN-E (or any successor form), as applicable, establishing an exemption from, or reduction of, United States federal withholding Tax pursuant to the “business profits” or “other income” article of such tax treaty;

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(2) executed copies of IRS Form W-8ECI (or any successor form);

(3) in the case of a Foreign Lender claiming the benefits of the exemption for portfolio interest under Section 881(c) of the Code, (x) a certificate substantially in the form of Exhibit H-1 to the effect that such Foreign Lender is not a “bank” within the meaning of Section 881(c)(3)(A) of the Code, a “10 percent shareholder” of a US Borrower within the meaning of Section 881(c)(3)(B) of the Code, or a “controlled foreign corporation” described in Section 881(c)(3)(C) of the Code (a “U.S. Tax Compliance Certificate”) and (y) executed copies of IRS Form W-8BEN (or any successor form) or W-8BEN-E (or any successor form), as applicable; or

(4) to the extent a Foreign Lender is not the beneficial owner, executed copies of IRS Form W-8IMY (or any successor form), accompanied by IRS Form W-8ECI (or any successor form), IRS Form W-8BEN (or any successor form) or W-8BEN-E (or any successor form), a U.S. Tax Compliance Certificate substantially in the form of Exhibit H-2 or Exhibit H-3, IRS Form W-9, and/or other certification documents from each beneficial owner, as applicable; provided that if the Foreign Lender is a partnership and one or more direct or indirect partners of such Foreign Lender are claiming the portfolio interest exemption, such Foreign Lender may provide a U.S. Tax Compliance Certificate substantially in the form of Exhibit H-4 on behalf of each such direct and indirect partner;

(A) any Foreign Lender shall, to the extent it is legally entitled to do so, deliver to Centuri and the Administrative Agent (in such number of copies as shall be requested by the recipient) on or prior to the date on which such Foreign Lender becomes a Lender under this Agreement (and from time to time thereafter upon the reasonable request of Centuri or the Administrative Agent), executed copies of any other form prescribed by Applicable Law as a basis for claiming exemption from or a reduction in United States federal withholding Tax, duly completed, together with such supplementary documentation as may be prescribed by Applicable Law to permit the US Borrowers or the Administrative Agent to determine the withholding or deduction required to be made; and

(B) if a payment made to a Lender under any Loan Document would be subject to United States federal withholding Tax imposed by FATCA if such Lender were to fail to comply with the applicable reporting requirements of FATCA (including those contained in Section 1471(b) or 1472(b) of the Code, as applicable), such Lender shall deliver to Centuri and the Administrative Agent at the time or times prescribed by law and at such time or times reasonably requested by Centuri or the Administrative Agent such documentation prescribed by Applicable Law (including as prescribed by Section 1471(b)(3)(C)(i) of the Code) and such additional documentation reasonably requested by Centuri or the Administrative Agent as may be necessary for the US Borrowers and the Administrative Agent to comply with their obligations under FATCA and to determine that such Lender has complied with such Lender’s obligations under FATCA or to determine the amount to deduct and withhold from such payment. Solely for purposes of this clause (D), “FATCA” shall include any amendments made to FATCA after the date of this Agreement.

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Each Lender agrees that (x) it shall promptly notify Centuri and the Administrative Agent of any change in circumstances which would modify or render invalid any claimed exemption or reduction to withholding and (y) if any form or certification it previously delivered expires or becomes obsolete or inaccurate in any respect, it shall update such form or certification or promptly notify Centuri and the Administrative Agent in writing of its legal inability to do so; provided that no such updating or notification is required to be made on account of any Canadian withholding tax if no form or certification has been previously delivered for Canadian withholding tax purposes.

(h) Treatment of Certain Refunds. If any party determines, in its sole discretion exercised in good faith, that it has received a refund of any Taxes as to which it has been indemnified pursuant to this Section 5.11 (including by the payment of additional amounts pursuant to this Section 5.11), it shall pay to the indemnifying party an amount equal to such refund (but only to the extent of indemnity payments made under this Section with respect to the Taxes giving rise to such refund), net of all out-of-pocket expenses (including Taxes) of such indemnified party and without interest (other than any interest paid by the relevant Governmental Authority with respect to such refund). Such indemnifying party, upon the request of such indemnified party, shall repay to such indemnified party the amount paid over pursuant to this paragraph (h) (plus any penalties, interest or other charges imposed by the relevant Governmental Authority) in the event that such indemnified party is required to repay such refund to such Governmental Authority. Notwithstanding anything to the contrary in this paragraph (h), in no event will the indemnified party be required to pay any amount to an indemnifying party pursuant to this paragraph (h) the payment of which would place the indemnified party in a less favorable net after-Tax position than the indemnified party would have been in if the Tax subject to indemnification and giving rise to such refund had not been deducted, withheld or otherwise imposed and the indemnification payments or additional amounts with respect to such Tax had never been paid. This paragraph shall not be construed to require any indemnified party to make available its Tax returns (or any other information relating to its Taxes that it deems confidential) to the indemnifying party or any other Person.

(xl) Survival. Each party’s obligations under this Section 5.11 shall survive the resignation or replacement of the Administrative Agent or any assignment of rights by, or the replacement of, a Lender, the termination of the Commitments and the repayment, satisfaction or discharge of all obligations under any Loan Document.

SECTION 5.12 Mitigation Obligations; Replacement of Lenders.

(a) Designation of a Different Lending Office. If any Lender requests compensation under Section 5.10, or requires any Borrower to pay any Indemnified Taxes or additional amounts to any Lender or any Governmental Authority for the account of any Lender pursuant to Section 5.11, or determines that it is unable to fulfill its obligations hereunder due to illegality pursuant to Section 5.8(d), then such Lender shall, at the request of the Borrowers, use reasonable efforts to designate a different Lending Office for funding or booking its Loans hereunder or to assign its rights and obligations hereunder to another of its offices, branches or affiliates, if, in the judgment of such Lender, such designation or assignment (i) would eliminate or reduce amounts payable pursuant to Section 5.10 or Section 5.11 or avoid illegality under Section 5.8(d), as the case may be, in the future and (ii) would not subject such Lender to any unreimbursed cost or expense and would not otherwise be disadvantageous to such Lender. Each Borrower hereby agrees to pay all reasonable costs and expenses incurred by any Lender in connection with any such designation or assignment.

(b) Replacement of Lenders. If any Lender requests compensation under Section 5.10, or if the Borrowers are required to pay any Indemnified Taxes or additional amounts to any Lender or any Governmental Authority for the account of any Lender pursuant to Section 5.11, or any Lender determines

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that it is unable to fulfill its obligations hereunder due to illegality pursuant to Section 5.8(d) and, in each case, such Lender has declined or is unable to designate a different Lending Office in accordance with Section 5.12(a), or if any Lender is a Defaulting Lender or a Non-Consenting Lender, then the Borrowers may, at their sole expense and effort, upon notice to such Lender and the Administrative Agent, require such Lender to assign and delegate, without recourse (in accordance with and subject to the restrictions contained in, and consents required by, Section 12.9), all of its interests, rights (other than its existing rights to payments pursuant to Section 5.10 or Section 5.11) and obligations under this Agreement and the related Loan Documents to an Eligible Assignee that shall assume such obligations (which assignee may be another Lender, if a Lender accepts such assignment); provided that:

(xli) the Borrowers shall have paid to the Administrative Agent the assignment fee (if any) specified in Section 12.9;

(xlii) such Lender shall have received payment of an amount equal to the outstanding principal of its Loans and funded participations in Letters of Credit and Swingline Loans, accrued interest thereon, accrued fees and all other amounts payable to it hereunder and under the other Loan Documents (including any amounts under Section 5.9) from the assignee (to the extent of such outstanding principal and accrued interest and fees) or the Borrowers (in the case of all other amounts);

(xliii) in the case of any such assignment resulting from a claim for compensation under Section 5.10 or payments required to be made pursuant to Section 5.11, such assignment will result in a reduction in such compensation or payments thereafter;

(xliv) such assignment does not conflict with Applicable Law; and

(xlv) in the case of any assignment resulting from a Lender becoming a Non-Consenting Lender, the applicable assignee shall have consented to the applicable amendment, waiver or consent.

A Lender shall not be required to make any such assignment or delegation if, prior thereto, as a result of a waiver by such Lender or otherwise, the circumstances entitling the Borrowers to require such assignment and delegation cease to apply.

Each party hereto agrees that (x) an assignment required pursuant to this Section 5.12 may be effected pursuant to an Assignment and Assumption executed by Centuri, the Administrative Agent and the assignee and (y) the Lender required to make such assignment need not be a party thereto in order for such assignment to be effective and shall be deemed to have consented to and be bound by the terms thereof; provided that, following the effectiveness of any such assignment, the other parties to such assignment agree to execute and deliver such documents necessary to evidence such assignment as reasonably requested by the applicable Lender or the Administrative Agent, provided, further that any such documents shall be without recourse to or warranty by the parties thereto.

SECTION 5.13 Incremental Loans.

(a) Request for Increase. At any time after the Closing Date, upon written notice to the Administrative Agent, the US Borrowers, or the Canadian Borrowers, as applicable, may, from time to time, request (i) one or more incremental term loans, including a borrowing of an additional term loan, the principal amount of which will be added to the tranche of Term Loan with the latest maturity date (an “Incremental Term Loan”) or (ii) one or more increases in the Revolving Credit Commitments (an “Incremental Revolving Credit Facility Increase” and, together with the initial principal amount of the

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