The Indenture;

Articles of organization of Red River dated July 31, 1995, as amended, and of TDC dated July 23, 2001, as amended, certified by the Secretary of State of Louisiana as of February 12, 2026, the Operating Agreement, dated July 11, 2007, of TDC, and the Amended and Restated Operating Agreement, dated July 11, 2007, of Red River, in each case as attached to the Certificate of Secretary Guarantors;

Resolutions of the Companies dated April 15, 2024, May 13, 2015, and February 16, 2026, in each case as attached to the Certificate of Secretary Guarantors;

Good standing certificates of the Companies dated February 12, 2026 issued by the Secretary of State of Louisiana (the “Louisiana Certificates” and, together with the documents in (ii) and (iii) above, the “Authority Documents”);

Officer’s Certificate dated March 4, 2026; and

Certificate of Secretary Guarantors dated as of March 4, 2026 (the “Certificate of Secretary Guarantors”).

That all signatures on the documents, agreements and instruments reviewed by us are genuine and that all documents submitted to us as originals are authentic and what they purport to be and all documents submitted to us as certified, conformed or photostatic copies conform to the originals of such documents;

The legal capacity of natural persons;

That each party (except as expressly provided in Opinion Paragraph 2 of this Opinion with respect to the Companies as to the Indenture) (1) is duly qualified to engage in the activities contemplated by the Examined Documents, and (2) has the requisite organizational power and authority to execute, deliver, and perform its respective obligations under the Examined Documents to which it is a party;

That each member, manager, officer, or other representative of the Companies (and each member, manager, officer, or other representative of any tier thereof) is validly existing and in good standing under the law of the jurisdiction of its formation and has taken all action necessary or received all necessary authorizations under any applicable organizational documents and applicable law to authorize the execution and delivery of articles of organization, operating agreements, resolutions, and authorizations governing the Companies and of the Indenture (including their respective Guarantees) and the performance by the Companies of their respective obligations under the Indenture (including their respective Guarantees);

That the Indenture been duly executed and delivered by all parties thereto in the forms examined by us (except as expressly provided in Opinion Paragraph 4 of this Opinion with respect to the Companies); and that the Indenture constitutes the valid and binding obligation of each party thereto, enforceable against each such party in accordance with its terms;

That there is no requirement of authorization, consent, order, approval, license, or exemption of, or filing requirement or registration with, any person or state or federal governmental authority with respect to the parties’ due execution, delivery or performance of the Indenture that has not been duly obtained or made and that is not in full force and effect;

That the Companies are direct or indirect wholly owned subsidiaries of the Partnership and are general limited liability companies of a type that is not regulated by any governmental authority in a manner that restricts their ability to enter into the Indenture;

The existence and entity power and due authorization of each person not a natural person (other than, with respect to the Indenture, the Companies) to execute and deliver the Indenture and to consummate the transactions contemplated by the Indenture;

That all parties to the Indenture are duly organized or formed, validly existing and in good standing under the laws of their respective jurisdictions of organization (except as expressly provided in Opinion Paragraph 1 of this Opinion with respect to the Companies) and have taken all actions necessary or received all necessary authorizations under any applicable organizational documents and applicable law to authorize the execution and delivery of the Indenture and the performance of the transactions contemplated by the Indenture (except as expressly provided in Opinion Paragraph 3 of this Opinion with respect to the Companies as to the Indenture);

That there is no requirement of authorization, consent, order, approval, license, or exemption of, or filing requirement or registration with, any person or state or federal governmental authority with respect to the parties’ due execution, delivery or performance of the Examined Documents that has not been duly obtained or made and that is not in full force and effect;

That all of the agreements with respect to the Examined Documents are set forth in the Examined Documents, that none of the Examined Documents or any other documents submitted to us have been amended or terminated orally or in writing and that there has been no material change in the facts set forth in the Examined Documents or such other documents; and

There has not been any change in the good standing status of the Companies from that reflected in the Louisiana Certificates or in the other Authority Documents.

Each Company is a Louisiana limited liability company, validly existing and is in good standing under the laws of the State of Louisiana;

Each Company has the limited liability company power to execute and deliver the Indenture and perform its obligations under the Indenture (including its Guarantee pursuant thereto);

The execution and delivery of the Indenture by each Company and the performance by each Company of its obligations under the Indenture (including its Guarantee pursuant thereto) have been duly authorized by all necessary limited liability company action; and

The Indenture has been duly and validly executed and delivered by each Company.

Our opinions with respect to the existence and good standing set forth in Paragraph (1) above are based solely upon the Authority Documents and speak only of the date and time set forth in the Louisiana Certificates, the certificate of the Louisiana Secretary of State with respect to the articles of organization of TDC, and the date of the Certificate of Secretary Guarantors. We have made no additional investigation after such dates and we assume that there has been no change as to the status of the Companies or the Authority Documents from the dates thereof and the date of this Opinion. The opinions expressed in Paragraph (1) do not extend to, and we express no opinion as to, whether the Companies are in “tax good standing” as to the payment of or filings related to taxes of the State of Louisiana (as opposed to filings relating to its entity status with the Louisiana Secretary of State).

As we were not present at the execution of the Indenture, we have relied upon certificates of the Companies as to the physical execution by a duly elected, qualified and acting officer of each Company, of the Indenture and have assumed that a copy of the Indenture has been irrevocably and unconditionally delivered to the Trustee on behalf of the Issuers and the Subsidiary Guarantors.

The matters expressed in this letter are subject to and qualified and limited by (i) applicable bankruptcy, insolvency, fraudulent transfer and conveyance, Louisiana revocatory action, reorganization, moratorium and similar laws affecting creditors’ rights and remedies generally; (ii) general principles of equity, including without limitation, concepts of materiality, reasonableness, good faith and fair dealing and the possible unavailability of specific performance or injunctive relief (regardless of whether considered in a proceeding in equity or at law); and (iii) securities laws and public policy underlying such laws with respect to rights to indemnification and contribution.

This Opinion is limited to the matters expressly stated herein and no opinion is to be inferred or implied beyond the opinion expressly set forth herein. We undertake no, and hereby disclaim any, obligation to make any inquiry after the date hereof or to advise you of any changes in any matter set forth herein, whether based on a change in the law, a change in any fact relating to the Companies or any other person or any other circumstance.

You are advised that our engagement by the Partnership has been limited to specific matters; consequently, there may exist matters of a legal nature involving the Companies about which we have not advised or represented the Companies and of which we have no knowledge.

We express no opinion regarding any Blue Sky laws or any securities laws.

We express no opinion as to the laws of any jurisdiction other the laws of the State of Louisiana and then only as to such laws as in our experience are normally applicable to the transactions reflected in the Indenture (“Included Laws”).

We express no opinion with respect to the fairness of any of the Indenture or any other matter, and in rendering the opinions expressed herein, we have assumed, with your consent, that a court of competent jurisdiction would find all such matters were entirely fair. We have assumed that no fraud, dishonesty, forgery, coercion, duress or breach of fiduciary duty exists or will exist with respect to any of the matters relevant to the opinions expressed in this Opinion.

We express no opinion as to (i) the compliance of the transactions contemplated by the Indenture with any laws, regulations, or governmental requirements applicable to any party other than the Companies (and then, only as to the Included Laws), (ii) the financial condition or solvency of the Companies, (iii) the ability (financial or otherwise) of any of the Companies or any other party to meet its obligations under the Indenture, (iv) whether the execution or delivery by the Companies of, or the performance by the Companies of their respective obligations under, the Indenture will conflict with, breach, violate, cause a default, or create or impose any lien or security interest under any contract or agreement as a result of any covenant, restriction or provision with respect to any financial ratio test or any aspect of the financial condition or results of operations of the Companies, and (v) the creation, attachment, validity, enforcement, perfection, effect of perfection or non-perfection or priority of any lien or security interest.

This Opinion expresses our legal opinion as to the foregoing matters based on our professional judgment at this time; it is not, however, to be construed as a guaranty, nor is it a warranty that a court considering such matters would not rule in a manner contrary to the opinions set forth above.

The opinions expressed herein are written as of and relate solely to the date hereof, and we disclaim any obligation to update this Opinion in any manner or for any reason.

The opinions expressed herein are rendered exclusively for your benefit in connection with the transactions described herein. Except as set forth below, the opinions expressed herein may not be used or relied upon by any other Person, nor may this Opinion or any copies or excerpts thereof be furnished to any other Person, filed with any government authority, quoted, cited or otherwise referred to without our prior written consent (except in connection with a legal or arbitral proceeding or as may be required by applicable law).