Document:

Purchase Agreement Joinder dated as of December 20, 2012

 Exhibit 10.1 
 PURCHASE AGREEMENT JOINDER 
 WHEREAS, Atlas Pipeline Escrow, LLC, a
Delaware limited liability company (the “Escrow Issuer”), and the Initial Purchasers named therein (the “Purchasers”) heretofore executed and delivered a Purchase Agreement (“Purchase Agreement”),
dated December 6, 2012, providing for the issuance and sale of the Notes (as defined therein); and 
 WHEREAS, pursuant to
Section 18 of the Purchase Agreement, Atlas Pipeline Partners, L.P., a Delaware limited partnership (the “Partnership”) and Atlas Pipeline Finance Corporation, a Delaware corporation (“Finance Co”) agreed to
issue the Notes in the event that the Acquisition (as defined in the Purchase Agreement) closed on the Closing Date; 
 WHEREAS,
the Acquisition will close on the Closing Date; and 
 WHEREAS, each of the Partnership, Finance Co and each Guarantor (as
defined in the Purchase Agreement) has agreed to join the Purchase Agreement. 
 Capitalized terms used herein and not otherwise
defined herein shall have the meanings ascribed to such terms in the Purchase Agreement. 
 NOW, THEREFORE, each of the
Partnership, Finance Co and each Guarantor hereby agrees for the benefit of the holders of the Offered Securities, as follows: 

1. Representations and Warranties and Agreements of the Partnership, Finance Co and Guarantors. The Partnership, Finance Co and
each Guarantor hereby represent and warrant to and agrees that it has all the requisite limited partnership, corporate or limited liability company, as the case may be, power and authority to execute, deliver and perform its obligations under this
Joinder and the consummation of the transaction contemplated hereby. This Joinder Agreement has been duly authorized, executed and delivered and is a valid and legally binding agreement enforceable against the Partnership, Finance Co and each
Guarantor in accordance with its terms. 
 2. Joinder. Without limiting the generality of the foregoing, the Partnership,
Finance Co and each Guarantor agree that they will (i) be bound by all covenants, agreements, representations, warranties and acknowledgments applicable to such party as set forth and in accordance with the terms of the Purchase Agreement, as
if the Partnership, Finance Co and each Guarantor was a party thereto and (ii) perform all obligations and duties required of an indemnifying party pursuant to the Purchase Agreement. 

3. Counterparts. This Joinder Agreement may be signed in one or more counterparts (which may be delivered in original form or
telecopier), each of which shall constitute an original when so executed and all of which together shall constitute one and the same agreement. 

 4. Amendments. No amendment or waiver of any provision of this Joinder Agreement, nor
any consent or approval to any departure therefrom, shall in any event be effective unless the same shall be in writing and signed by the parties thereto. 
 5. Release. On the Closing Date and upon execution of this Joinder Agreement by the Partnership, Finance Co and the Guarantors, the Escrow Issuer shall be released from its obligations under the
Purchase Agreement. 
 6. Headings. The section headings used herein are for convenience only and shall not affect the
construction hereof. 
 7. APPLICABLE LAW. THE VALIDITY AND INTERPRETATION OF THIS JOINDER AND ASSUMPTION AGREEMENT, AND
ANY CLAIM CONTROVERSY OR DISPUTE ARISING UNDER OR RELATING TO THIS AGREEMENT, AND THE TERMS AND CONDITIONS SET FORTH HEREIN SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO CONTRACTS MADE AND TO
BE PERFORMED WHOLLY THEREIN. 
 [Signature Pages Follow] 

 IN WITNESS WHEREOF, the undersigned has executed this agreement this 20th day of December,
2012. 
  

					
	ATLAS PIPELINE PARTNERS, L.P.
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
		
	By:	 	/s/ Robert W. Karlovich, III
		 	Name:	 	Robert W. Karlovich, III
		 	Title:	 	Chief Financial Officer & Chief Accounting Officer
	
	ATLAS PIPELINE FINANCE CORPORATION
		
	By:	 	/s/ Robert W. Karlovich, III
		 	Name:	 	Robert W. Karlovich, III
		 	Title:	 	Chief Financial Officer
	
	ATLAS PIPELINE OPERATING PARTNERSHIP, L.P.
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS PIPELINE MID-CONTINENT HOLDINGS, LLC
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	APL LAUREL MOUNTAIN, LLC
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner

 
			
	ATLAS PIPELINE TENNESSEE, LLC
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS PIPELINE MID-CONTINENT LLC
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	APL BARNETT, LLC
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	SLIDER WESTOK GATHERING, LLC
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS MIDKIFF, LLC
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner

 
			
	ATLAS CHANEY DELL, LLC
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	NOARK ENERGY SERVICES, L.L.C.
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS PIPELINE NGL HOLDINGS, LLC
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS PIPELINE NGL HOLDINGS II, LLC
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	VELMA INTRASTATE GAS TRANSMISSION COMPANY, LLC
	By:	 	Atlas Pipeline Mid-Continent LLC, its sole member
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner

 
					
	VELMA GAS PROCESSING COMPANY, LLC
	By:	 	Atlas Pipeline Mid-Continent LLC, its sole member
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	PECOS PIPELINE LLC
	By:	 	APL Barnett, LLC, its sole member
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	APL ARKOMA HOLDINGS, LLC
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
	
	TESUQUE PIPELINE, LLC
	By:	 	APL Barnett, LLC, its sole member
	By:	 	Atlas Pipeline Mid-Continent LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
		
	By:	 	 /s/ Robert W. Karlovich, III

		 	Name:	 	Robert W. Karlovich, III
		 	Title:	 	Chief Financial Officer & Chief Accounting Officer

 
			
	
	APL ARKOMA MIDSTREAM, LLC
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
		
	By:	 	 /s/ Robert W. Karlovich, III

		 	Name:
		 	Title:

 
					
	APL ARKOMA, INC.
		
	By:	 	 /s/ Robert W. Karlovich, III

		 	Name:	 	Robert W. Karlovich, III
		 	Title:	 	Chief Financial Officer
	
	APL GAS TREATING LLC
	By:	 	Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By:	 	Atlas Pipeline Operating Partnership, L.P., its sole member
	By:	 	Atlas Pipeline Partners GP, LLC, its General Partner
		
	By:	 	 /s/ Robert W. Karlovich, III

		 	Name:	 	Robert W. Karlovich, III
		 	Title:	 	Chief Financial Officer & Chief Accounting OfficerSupplemental Indenture Dated as of December 20, 2012

 Exhibit 10.2 
 ATLAS PIPELINE PARTNERS, L.P. 
 ATLAS PIPELINE FINANCE CORPORATION 

and 
 the
Subsidiary Guarantors named herein 
  
  

6  5/8% SENIOR NOTES DUE 2020 

 
  

SUPPLEMENTAL INDENTURE 
 DATED AS OF DECEMBER 20, 2012 
  

 
 U.S. BANK
NATIONAL ASSOCIATION, 
 Trustee 
  

 

 This SUPPLEMENTAL INDENTURE, dated as of December 20, 2012 is among Atlas Pipeline
Partners, L.P., a Delaware limited partnership (the “Company”), Atlas Pipeline Finance Corporation, a Delaware corporation (“Finance Co” and, together with the Company, the “Issuers”), each of the
parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and U.S. Bank National Association, a national banking association, as Trustee. 

RECITALS 
 WHEREAS, the Issuers, the initial Subsidiary Guarantors and the Trustee entered into an Indenture, dated as of September 28, 2012 (the “Indenture”), pursuant to which the Issuers
have issued $500,000,000 in principal amount of 6 5/8% Senior Notes due 2020 (the “Notes”); 

WHEREAS, Section 9.01(d) of the Indenture provides that the Issuers, the Subsidiary Guarantors and the Trustee may amend or
supplement the Indenture in order to add Subsidiary Guarantors pursuant to Section 4.13 thereof, without the consent of the Holders of the Notes; 
 WHEREAS, Section 9.01(a) if the Indenture provides that the Issuers, the Subsidiary Guarantors and the Trustee may amend or supplement the Indenture in order to cure any ambiguity, defect or
inconsistency; 
 WHEREAS, the Issuers, the Subsidiary Guarantors and the Trustee have jointly identified an ambiguity, defect
or inconsistency in the Indenture in the definition of “Permitted Liens”; 
 WHEREAS, the parties hereto have agreed
to amend such definition to cure such defect or inconsistency; and 
 WHEREAS, all acts and things prescribed by the Indenture,
by law and by the Certificate of Incorporation and the Bylaws (or comparable constituent documents) of the Issuers, of the Subsidiary Guarantors and of the Trustee necessary to make this Supplemental Indenture a valid instrument legally binding on
the Issuers, the Subsidiary Guarantors and the Trustee, in accordance with its terms, have been duly done and performed; 
 NOW,
THEREFORE, to comply with the provisions of the Indenture and in consideration of the above premises, the Issuers, the Subsidiary Guarantors and the Trustee covenant and agree for the equal and proportionate benefit of the respective Holders of the
Notes as follows: 
 ARTICLE 1 
 Section 1.01. This Supplemental Indenture is supplemental to the Indenture and does and shall be deemed to form a part of, and shall be construed in connection with and as part of, the Indenture for
any and all purposes. 
 Section 1.02. This Supplemental Indenture shall become effective immediately upon its execution
and delivery by each of the Issuers, the Subsidiary Guarantors and the Trustee. 
 ARTICLE 2 

Section 1.01. From this date, in accordance with Section 4.13 and by executing this Supplemental Indenture, the Guarantors
whose signatures appear below are subject to the provisions of the Indenture to the extent provided for in Article 10 thereunder. 
 Section 1.02. The definition of “Permitted Liens” in the Indenture is hereby amended renumbering current clause (15) as clause (16), deleting the word “and” and the end of
clause (14), and adding the following: “(15) Liens on and pledges of the Equity Interests of any Unrestricted Subsidiary or any Joint Venture owned by the Company or any Restricted Subsidiary of the Company to the extent securing Non-Recourse
Debt or other Indebtedness of such Unrestricted Subsidiary or Joint Venture; and”. 

 ARTICLE 3 
 Section 3.01. Except as specifically modified herein, the Indenture and the Notes are in all respects ratified and confirmed (mutatis mutandis) and shall remain in full force and effect in
accordance with their terms with all capitalized terms used herein without definition having the same respective meanings ascribed to them as in the Indenture. 
 Section 3.02. Except as otherwise expressly provided herein, no duties, responsibilities or liabilities are assumed, or shall be construed to be assumed, by the Trustee by reason of this Supplemental
Indenture. This Supplemental Indenture is executed and accepted by the Trustee subject to all the terms and conditions set forth in the Indenture with the same force and effect as if those terms and conditions were repeated at length herein and made
applicable to the Trustee with respect hereto. 
 Section 3.03. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 
 Section 3.04. The parties may sign any number of copies
of this Supplemental Indenture. Each signed copy shall be an original, but all of such executed copies together shall represent the same agreement. 
 [NEXT PAGE IS SIGNATURE PAGE] 

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed, all as of the date first written above. 
  

			
	ATLAS PIPELINE PARTNERS, L.P.
	By: Atlas Pipeline Partners GP, LLC, its General Partner
		
	By:	 	 /s/ Robert W. Karlovich, III

	Name:	 	Robert W. Karlovich, III
	Title:	 	Chief Financial Officer & Chief Accounting Officer
	
	ATLAS PIPELINE FINANCE CORPORATION
		
	By:	 	 /s/ Robert W. Karlovich, III

	Name:	 	Robert W. Karlovich, III
	Title:	 	Chief Financial Officer
	
	ATLAS PIPELINE OPERATING PARTNERSHIP, L.P.
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS PIPELINE MID-CONTINENT HOLDINGS, LLC
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	APL LAUREL MOUNTAIN, LLC
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS PIPELINE TENNESSEE, LLC
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
		
	By:	 	 /s/ Robert W. Karlovich, III

	Name:	 	Robert W. Karlovich, III
	Title:	 	Chief Financial Officer & Chief Accounting Officer

 
			
	ATLAS PIPELINE MID-CONTINENT LLC
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	APL BARNETT, LLC
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	SLIDER WESTOK GATHERING, LLC
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS MIDKIFF, LLC
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS CHANEY DELL, LLC
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
		
	By:	 	 /s/ Robert W. Karlovich, III

	Name:	 	Robert W. Karlovich, III
	Title:	 	Chief Financial Officer & Chief Accounting Officer

 
			
	NOARK ENERGY SERVICES, L.L.C.
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS PIPELINE NGL HOLDINGS, LLC
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	ATLAS PIPELINE NGL HOLDINGS II, LLC
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	VELMA INTRASTATE GAS TRANSMISSION COMPANY, LLC
	By: Atlas Pipeline Mid-Continent LLC, its sole member
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	VELMA GAS PROCESSING COMPANY, LLC
	By: Atlas Pipeline Mid-Continent LLC, its sole member
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
		
	By:	 	 /s/ Robert W. Karlovich, III

	Name:	 	Robert W. Karlovich, III
	Title:	 	Chief Financial Officer & Chief Accounting Officer

 
			
	 PECOS PIPELINE LLC

	By: APL Barnett, LLC, its sole member
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	TESUQUE PIPELINE, LLC
	By: APL Barnett, LLC, its sole member
	By: Atlas Pipeline Mid-Continent LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	APL ARKOMA HOLDINGS, LLC
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	APL ARKOMA MIDSTREAM, LLC
	By: APL Arkoma Holdings, LLC
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
	
	APL GAS TREATING LLC
	By: Atlas Pipeline Mid-Continent Holdings, LLC, its sole member
	By: Atlas Pipeline Operating Partnership, L.P., its sole member
	By: Atlas Pipeline Partners GP, LLC, its General Partner
		
	By:	 	 /s/ Robert W. Karlovich, III

	Name:	 	Robert W. Karlovich, III
	Title:	 	Chief Financial Officer & Chief Accounting Officer

 
			
	APL ARKOMA, INC.
		
	By:	 	 /s/ Robert W. Karlovich, III

	Name:	 	Robert W. Karlovich, III
	Title:	 	Chief Financial Officer
	
	APL ARKOMA HOLDINGS, LLC.
		
	By:	 	 /s/ Robert W. Karlovich, III

	Name:	 	Robert W. Karlovich, III
	Title:	 	Chief Financial Officer

 
			
	U.S. BANK NATIONAL ASSOCIATION, as Trustee
		
	By:	 	 /s/ Steven A. Finklea

	Name:	 	Steven A. Finklea
	Title:	 	Vice President

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