Document:

Second Supplemental Indenture dated as of August 16, 2006    11 1/8%

 Exhibit 4.13(b) 
 SECOND SUPPLEMENTAL INDENTURE 
 dated as of August 16, 2006 
 among 
 LYONDELL CHEMICAL COMPANY, 

as Company 
 the SUBSIDIARY GUARANTORS party
hereto 
 and 
 THE BANK OF NEW
YORK, 
 as Trustee 
  

 11 1/8% Senior Secured Notes due 2012 

 THIS SECOND SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), entered into as of
August 16, 2006, among LYONDELL CHEMICAL COMPANY, a Delaware corporation (the “Company”), LYONDELL-CITGO REFINING LP, a Delaware limited partnership, LYONDELL HOUSTON REFINERY INC., a Delaware corporation, and LYONDELL HOUSTON
REFINERY A INC., a Delaware corporation (each an “Undersigned”), and THE BANK OF NEW YORK, as trustee (the “Trustee”). 
 RECITALS 
 WHEREAS, the Company, the Subsidiary Guarantors party thereto and the Trustee entered into
the Indenture, dated as of July 2, 2002 (the “Indenture”), relating to the Company’s 11 1/8% Senior Secured Notes due 2012 (the “Notes”); 
 WHEREAS, as a condition to the Trustee entering
into the Indenture and the purchase of the Notes by the Holders, the Company agreed, subject to certain exceptions, pursuant to Section 4.22 of the Indenture to cause any Restricted Subsidiary that has guaranteed or secured Indebtedness of the
Company or any of its Restricted Subsidiaries to provide Subsidiary Guarantees. 
 AGREEMENT 
 NOW, THEREFORE, in consideration of the premises and mutual covenants herein contained and intending to be legally bound, the parties hereto hereby agree
as follows: 
 Section 1. Capitalized terms used herein and not otherwise defined herein are used as defined in the Indenture.

 Section 2. Each Undersigned, by its execution of this Supplemental Indenture, agrees to be a Subsidiary Guarantor under the Indenture
and to be bound by the terms of the Indenture applicable to Subsidiary Guarantors, including, but not limited to, Article 13 thereof. 
 Section 3. This Supplemental Indenture shall be governed by and construed in accordance with the internal laws of the State of New York. 
 Section 4. This Supplemental Indenture may be signed in various counterparts which together shall constitute one and the same instrument. 
 Section 5. This Supplemental Indenture is an amendment supplemental to the Indenture and said Indenture and this Supplemental Indenture shall
henceforth be read together. 
 [Remainder of this page intentionally left blank] 
  

 2 

 IN WITNESS WHEREOF, the parties have duly executed and delivered this Supplemental Indenture or have
caused this Supplemental Indenture to be duly executed on their respective behalf by their respective officers thereunto duly authorized, as of the day and year first above written. 
  

			
	 LYONDELL CHEMICAL COMPANY, as Company

		
	By:	 	 /s/ Karen A. Twitchell

	Name:	 	Karen A. Twitchell
	Title:	 	Vice President and Treasurer

  

			
	 LYONDELL-CITGO REFINING LP, as
 Subsidiary Guarantor

		
	By:	 	 /s/ Bill Thompson

	Name:	 	Bill Thompson
	Title:	 	Vice President and General Manager

  

			
	 LYONDELL HOUSTON REFINERY INC., as Subsidiary Guarantor

		
	 By:
	 	 /s/ Karen A. Twitchell

	 Name:
	 	Karen A. Twitchell
	 Title:
	 	Vice President and Treasurer

  

			
	 LYONDELL HOUSTON REFINERY A INC., as Subsidiary Guarantor

		
	 By:
	 	 /s/ Karen A. Twitchell

	 Name:
	 	Karen A. Twitchell
	 Title:
	 	Vice President and Treasurer

 Signature Page to Supplemental Indenture 

			
	 THE BANK OF NEW YORK, as Trustee

		
	By:	 	 /s/ Robert A. Massimillo

	Name:	 	Robert A. Massimillo
	Title:	 	Vice President

 Signature Page to Supplemental IndentureSecond Supplemental Indenture dated as of August 16, 2006   10 1/2 %

 Exhibit 4.17(b) 
 SECOND SUPPLEMENTAL INDENTURE 
 dated as of August 16, 2006 
 among 
 LYONDELL CHEMICAL COMPANY, 

as Company 
 the SUBSIDIARY GUARANTORS party
hereto 
 and 
 THE BANK OF NEW
YORK, 
 as Trustee 
  

 10 1/2% Senior Secured Notes due 2013 

 THIS SECOND SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), entered into as of
August 16, 2006 among LYONDELL CHEMICAL COMPANY, a Delaware corporation (the “Company”), LYONDELL-CITGO REFINING LP, a Delaware limited partnership, LYONDELL HOUSTON REFINERY INC., a Delaware corporation, and LYONDELL HOUSTON
REFINERY A INC., a Delaware corporation (each an “Undersigned”), and THE BANK OF NEW YORK, as trustee (the “Trustee”). 
 RECITALS 
 WHEREAS, the Company, the Subsidiary Guarantors party thereto and the Trustee entered into
the Indenture, dated as of May 20, 2003 (the “Indenture”), relating to the Company’s 10 1/2% Senior Secured Notes due 2013 (the “Notes”); 
 WHEREAS, as a condition to the Trustee entering
into the Indenture and the purchase of the Notes by the Holders, the Company agreed, subject to certain exceptions, pursuant to Section 4.22 of the Indenture to cause any Restricted Subsidiary that has guaranteed or secured Indebtedness
of the Company or any of its Restricted Subsidiaries to provide Subsidiary Guarantees. 
 AGREEMENT 
 NOW, THEREFORE, in consideration of the premises and mutual covenants herein contained and intending to be legally bound, the parties hereto hereby agree
as follows: 
 Section 1. Capitalized terms used herein and not otherwise defined herein are used as defined in the Indenture.

 Section 2. Each Undersigned, by its execution of this Supplemental Indenture, agrees to be a Subsidiary Guarantor under the Indenture
and to be bound by the terms of the Indenture applicable to Subsidiary Guarantors, including, but not limited to, Article 13 thereof. 
 Section 3. This Supplemental Indenture shall be governed by and construed in accordance with the internal laws of the State of New York. 
 Section 4. This Supplemental Indenture may be signed in various counterparts which together shall constitute one and the same instrument. 
 Section 5. This Supplemental Indenture is an amendment supplemental to the Indenture and said Indenture and this Supplemental Indenture shall
henceforth be read together. 
 [Remainder of this page intentionally left blank] 
  

 2 

 IN WITNESS WHEREOF, the parties have duly executed and delivered this Supplemental Indenture or have
caused this Supplemental Indenture to be duly executed on their respective behalf by their respective officers thereunto duly authorized, as of the day and year first above written. 
  

			
	 LYONDELL CHEMICAL COMPANY, as Company

		
	By:	 	 /s/ Karen A. Twitchell

	Name:	 	Karen A. Twitchell
	Title:	 	Vice President and Treasurer

  

			
	 LYONDELL-CITGO REFINING LP, as
 Subsidiary Guarantor

		
	 By:
	 	 /s/ Bill Thompson

	 Name:
	 	Bill Thompson
	 Title:
	 	Vice President and General Manager

  

			
	 LYONDELL HOUSTON REFINERY INC., as Subsidiary Guarantor

		
	By:	 	 /s/ Karen A. Twitchell

	Name:	 	Karen A. Twitchell
	Title:	 	Vice President and Treasurer

  

			
	 LYONDELL HOUSTON REFINERY A INC., as Subsidiary Guarantor

		
	By:	 	 /s/ Karen A. Twitchell

	Name:	 	Karen A. Twitchell
	Title:	 	Vice President and Treasurer

 Signature Page to Supplemental Indenture 

			
	 THE BANK OF NEW YORK, as Trustee

		
	By:	 	 /s/ Robert A. Massimillo

	Name:	 	Robert A. Massimillo
	Title:	 	Vice President

 Signature Page to Supplemental IndentureSecond Amendment to LCR's Partnership Agreement dated July 31, 2006

 Exhibit 10.22(b) 
 SECOND AMENDMENT 
 TO THE 
 LIMITED PARTNERSHIP AGREEMENT 
 OF 
 LYONDELL-CITGO REFINING LP 
 This
Second Amendment (this “Second Amendment”) to the Limited Partnership Agreement of LYONDELL-CITGO REFINING LP, a Delaware limited partnership (the “Partnership”), is made as of July 31, 2006 by and
among CITGO REFINING INVESTMENT COMPANY, an Oklahoma corporation (“CITGO LP”), CITGO GULF COAST REFINING, INC., a Delaware corporation (“CITGO GP”), LYONDELL REFINING PARTNERS LP, a Delaware
limited partnership (“Lyondell LP”), and LYONDELL REFINING COMPANY LP, a Delaware limited partnership (“Lyondell GP” and, together with CITGO LP, CITGO GP and Lyondell LP, the “LCR
Partners”). 
 RECITALS 
 WHEREAS, in accordance with Section 12.4 of the Limited Partnership Agreement of the Partnership dated December 31, 1998, as amended (the “LP Agreement”), the Representatives have approved this Amendment;

 WHEREAS, the LCR Partners being all of the Partners of the Partnership desire to amend the Agreement. 
 NOW, THEREFORE, the LP Agreement is hereby amended as follows: 
 Section 1. Defined Terms. Capitalized terms used and not otherwise defined herein shall have the meanings given such terms in the LP Agreement. 
 Section 2. Effectiveness of Partnership Agreement. Except as amended by this Second Amendment, all terms and conditions of the LP Agreement
shall remain in full force and effect among the Partners. 
 Section 3. Amendment. Section 3.8(C) of the LP Agreement shall
be amended to read as follows in its entirety: 
 (C) [Reserved]; 
 Section 4. Amendment. Section 12.4 of the LP Agreement shall be amended to read as follows in its entirety: 
  

	 	12.4.	Waivers, Modifications and Amendments. All modifications or amendments of this Agreement or the Certificate of Limited Partnership shall require the approval of each Partner.

 Section 5. Governing Law. This Second Amendment will be governed by and construed in
accordance with the laws of the State of Delaware. 
 Section 6. Severability. In the event that any provision of this Second
Amendment shall finally be determined to be unlawful, such provision shall, so long as the economic and legal substance of the transactions contemplated hereby is not affected in any materially adverse manner as to any Partner, be deemed severed
from this Second Amendment and every other provision of this Second Amendment shall remain in full force and effect. 
 Section 7.
Counterparts. This Second Amendment may be executed in multiple counterparts by different parties hereto in separate counterparts, each of which when executed shall be deemed to be an original but all of which taken together shall constitute
one and the same agreement. 
 [signature page follows] 

 IN WITNESS WHEREOF, all of the Partners of the Partnership have executed this Second Amendment, effective
as of the date first listed above. 
  

					
	LYONDELL-REFINING COMPANY LP
		
	By:	 	LRC Holdings GP, LLC, its general partner
			
		 	By:	 	Lyondell Chemical Company, its sole member
			
		 	By:	 	 /s/ Allen C. Holmes

		 	Name:	 	Allen C. Holmes
		 	Title:	 	Vice President, Tax and Real Estate

  

					
	LYONDELL-REFINING PARTNERS LP
		
	By:	 	Lyondell Refining GP LLC, its general partner
			
		 	By:	 	Lyondell Chemical Company, its sole member
			
		 	By:	 	 /s/ Allen C. Holmes

		 	Name:	 	Allen C. Holmes
		 	Title:	 	Vice President, Tax and Real Estate

  

					
	CITGO GULF COAST REFINING, INC.
			
		 	By:	 	 /s/ Frank Gygax

		 	Name:	 	Frank Gygax
		 	Title:	 	President

  

					
	CITGO REFINING INVESTMENT COMPANY
			
		 	By:	 	 /s/ Randall J. Carbo

		 	Name:	 	Randall J. Carbo
		 	Title:	 	VP Lake Charles Complex

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00109-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00109-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00109-of-00352.parquet"}]]