Supplemental Indenture dated as of October 22, 2018, among Crestwood Midstream Partners LP, Crestwood Midstream Finance Corporation, each existing Guarantor and U.S. Bank National Association, as trustee

THIS SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), is dated as of October 22, 2018, among Crestwood Midstream Partners LP, a Delaware limited partnership (the “Company”), Crestwood Midstream Finance Corporation, a Delaware corporation (the “Co- Issuer” and, together, with the Company, the “Issuers”), each existing Guarantor under each of the Indentures referred to below and U.S. Bank National Association, as trustee under each of the Indentures referred to below (the “Trustee”).

WHEREAS, the Issuers and the existing Guarantors have heretofore executed and delivered to the Trustee (i) an indenture, dated as of March 23, 2015 (as it may have been heretofore amended or supplemented, the “2015 Indenture”), providing for the issuance of the Issuers’ 6.25% Senior Notes due 2023 (the “2023 Notes”) and (ii) an indenture, dated as of March 14, 2017 (as it may have been heretofore amended or supplemented, the “2017 Indenture” and together with the 2015 Indenture, the “Indentures”), providing for the issuance of the Issuers’ 5.75% Senior Notes due 2025 (the “2025 Notes” and, together with the 2023 Notes, the “Notes”);

WHEREAS, Section 10.05 of each of the Indentures provides that the Note Guarantee of a Guarantor will be automatically released in connection with any sale, disposition or transfer of Capital Stock of a Guarantor after which such Guarantor is no longer a Restricted Subsidiary of the Company, if the sale, disposition or transfer does not violate Section 4.10 of such Indenture;

WHEREAS, pursuant to the transactions contemplated by that certain Membership Interest Purchase Agreement by and among Crestwood Services LLC, and South 49 Holdings, Ltd., solely for purposes of Section 7.9 of the Membership Interest Purchase Agreement, Crestwood Equity Partners LP, and solely for purposes of Section 7.9 of the Membership Interest Purchase Agreement, SAM Holdings Ltd., dated June 30, 2018, the Capital Stock of Crestwood West Coast LLC, a Delaware limited liability company (“Crestwood West Coast”) was sold in a manner that did not violate Section 4.10 of each of the Indentures, and after which Crestwood West Coast was no longer a Restricted Subsidiary of the Company;

WHEREAS, pursuant to Section 9.01(8) of the 2015 Indenture and Section 9.01(9) of the 2017 Indenture, the Trustee, the Issuers and the existing Guarantors are authorized to execute and deliver this Supplemental Indenture, without the consent on any Holder of any of the Notes, to acknowledge the release of any Guarantor from its Note Guarantee.

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Issuers, the Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders as follows:

1.DEFINED TERMS. Defined terms used herein without definition shall have the meanings assigned to them in the Indenture.

2.RELEASE OF NOTE GUARANTEES. In sole reliance on the Officer’s Certificate and the Opinion of Counsel delivered to the Trustee on the date hereof, the Trustee acknowledges

3.RATIFICATION OF EACH INDENTURE; SUPPLEMENTAL INDENTURE PART OF EACH INDENTURE. Except as expressly amended hereby, each Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of each Indenture for all purposes, and every holder of Notes heretofore or hereafter authenticated and delivered shall be bound hereby.

4.GOVERNING LAW. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

5.COUNTERPARTS. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement. The exchange of copies of this Supplemental Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Supplemental Indenture as to the parties hereto and may be used in lieu of the original Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF shall be deemed to be their original signatures for all purposes.

6.EFFECT OF HEADINGS. The Section headings of this Supplemental Indenture have been inserted for convenience of reference only and are not to be considered part of this Supplemental Indenture or the Indenture and will in no way modify or restrict any of the terms or provisions hereof or thereof.

7.TRUSTEE MAKES NO REPRESENTATION. The Trustee makes no representation as to the validity or sufficiency of this Supplemental Indenture. The recitals and statements herein are deemed to be those of the Issuers and the Guarantors and not those of the Trustee, and the Trustee assumes no responsibility for their correctness.