Document:

EXHIBIT
      10.30

    

    EXTENSION
      AGREEMENT

    
      	
              272102

            	
              Date:
                2-16-08

            

    

    

    By
      mutual
      agreement, the attached Note No. 272102
      (the
      "Note") is hereby changed and/or extended as follows:

    

    1.
      The
      remaining balance of payments in the amount of $97,986.02,
      originally due on or before 2-16-08,
      are now
      due on 08-16-2008.

    

    2.
      The
      unpaid principal balance shall continue to bear interest until paid in full.
      The
      interest rate x
      will
      remain the same; or  ̈
      is
      hereby changed to _________________% per annum from and after the date of the
      Agreement. (mark one)

     

    
      	
              3. ADDITIONAL TERMS

            	
              Allow
                time to get plant built

            

    

     

    4.
      This
      Extension Agreement does not in any way satisfy or cancel the Note. Except
      as
      specifically amended hereby, all other terms of the Note remain in full force
      and effect. Any security interest or lien granted by the Debtor(s) in any real
      or personal property which secures Debtor(s) obligation under the terms of
      the
      Note shall remain in full force and effect and shall secure the obligations
      of
      the Debtor(s) under the terms of the Note as amended by this Extension
      Agreement.

    

    
      	
              AMERICAN
                STATE BANK

            	 	
              Southern
                Iowa BioEnergy, LLC

            
	
              OSCEOLA,
                IOWA 50213

            	 	
              BY
                SIGNING BELOW, YOU AGREE TO THE TERMS OF

            
	
              LAMONI,
                IOWA 50140

            	 	
              AND
                ACKNOWLEDGE RECEIPT OF A COPY OF THIS

            
	 	 	
              EXTENSION
                AGREEMENT

            
	
              By

            	
              /s/
                Kevin W. Klemesrud

            	 	 
	 	 	 	 
	 	 	 	
              /s/
                Bill Higdon /s/ Leon Kessel /s/ William Morain

            
	 	 	 	
              Debtor 

            
	 	 	 	 
	 	 	 	
              /s/
                Alan Elefson /s/ Jack Cooley /s/ J. R. Cornett 

            
	 	 	 	
              Co-Debtor 

            

    

     

    
      
        

      

      
        

      

    EXTENSION
      AGREEMENT

    

    
      	
              272982

            	
              Date:
                2-16-08

            

    

    

    By
      mutual
      agreement, the attached Note No. 272982
      (the
      "Note") is hereby changed and/or extended as follows:

    

    1.
      The
      remaining balance of payments in the amount of $50,040.00,
      originally due on or before 2-16-08,
      are now
      due on 08-16-2008.

    

    2.
      The
      unpaid principal balance shall continue to bear interest until paid in full.
      The
      interest rate x
      will
      remain the same; or  ̈
      is
      hereby changed to _________________% per annum from and after the date of the
      Agreement. (mark one)

     

    
      	
              3. ADDITIONAL TERMS

            	
              Allow
                time to get plant built

            

    

    
    

     

      
        

      

    

    

    4.
      This
      Extension Agreement does not in any way satisfy or cancel the Note. Except
      as
      specifically amended hereby, all other terms of the Note remain in full force
      and effect. Any security interest or lien granted by the Debtor(s) in any real
      or personal property which secures Debtor(s) obligation under the terms of
      the
      Note shall remain in full force and effect and shall secure the obligations
      of
      the Debtor(s) under the terms of the Note as amended by this Extension
      Agreement.

    

    
      	
              AMERICAN
                STATE BANK

            	 	
              Southern
                Iowa BioEnergy, LLC

            
	
              OSCEOLA,
                IOWA 50213

            	 	
              BY
                SIGNING BELOW, YOU AGREE TO THE TERMS OF

            
	
              LAMONI,
                IOWA 50140

            	 	
              AND
                ACKNOWLEDGE RECEIPT OF A COPY OF THIS

            
	 	 	
              EXTENSION
                AGREEMENT

            
	
              By

            	
              /s/
                Kevin W. Klemesrud

            	 	 
	 	 	 	
              /s/
                Bill Higdon /s/ Leon Kessel /s/ William Morain

            
	 	 	 	
              Debtor

            
	 	 	 	 
	 	 	 	
              /s/
                Alan Elefson /s/ Jack Cooley /s/ J. R. Cornett

            
	 	 	 	
              Co-DebtorEXHIBIT
      10.31

     

    CHANGE
      IN TERMS AGREEMENT

    

    
      	
              Principal

              $2,2000,000.00

            	 	
              Loan
                Date

              07-17-2006

            	 	
              Maturity

              10-17-2006

            	 	
              Loan
                No.

              108002938

            	 	
              Call/Coll

              1E2/150

            	 	
              Account

            	 	
              Officer

              TLG

            	 	
              Initials

            
	
              References
                in the shaded area are for Lender's use only and do not limit the
                applicability of this document to any particular loan or item. Any
                item
                above containing "***" has been omitted due to text length
                limitations.

            

    

    

    
      	
              Borrower:

            	
              Southern
                Iowa BioEnergy LLC 

            	 	
              Lender:

            	
              Great
                Western Bank

            	 
	 	
              115
                So Linden

            	 	 	
              Leon

            	 
	 	
              Lamoni,
                IA 50140

            	 	 	
              111
                N. Main

            	 
	 	 	 	 	
              PO
                Box 171

            	 
	 	 	 	 	
              Leon,
                IA 50144

            	 

    

    
      	 	 	 
	 	 	 
	
              Principal
                Amount: $2,200,000.00

            	
              Interest
                Rate: 10.240%

            	
              Date
                of Agreement: February 19,
                2008

            

    

    

    DESCRIPTION
      OFEXISTING INDEBTEDNESS. Promissory
      note from Southern Iowa BioEnergy LLC to Great Western Bank dated 7-17-2006
      in
      the amount of $2,200,000.00 with a current balance of $617,000.91.

    

    DESCRIPTION
      OF COLLATERAL.
      ALL
      COLLATERAL INCLUDING BUT NOT LIMITED TO: Real Estate Mortgage dated 6-12-2006
      and Security Agreement dated 6-12-2006 siting the assignment of Pre-Construction
      Services Agreement and Personal Guaranties from Leon G. Kessel, James R.
      Cornett, Jack Cooley, William Douglas Morain and William T. Higdon dated
      6-12-2006.

    

    DESCRIPTION
      OF CHANGE IN TERMS. Extended
      the maturity date of the loan to 5-17-2008. Change the interest rate of the
      loan
      to 8.74% fixed until maturity. 

    

    CONTINUING
      VALIDITY.
      Except
      as expressly changed by this Agreement, the terms of the original obligation
      or
      obligations, including all agreements evidenced or securing the obligation(s),
      remain unchanged and in full force and effect. Consent by Lender to this
      Agreement does not waive Lender’s right to strict performance of the
      obligation(s) as changed, nor obligate Lender to make any future change in
      terms. Nothing in this Agreement will constitutes a satisfaction of the
      obligation(s). It is the intention of Lender to retain as liable parties all
      makers and endorsers of the original obligation(s), including accommodation
      parties, unless a party expressly released by Lender in writing. Any maker
      or
      endorser, including accommodation makers, will not be released by virtue of
      this
      Agreement. If any person who signed the original obligation does not sign this
      Agreement below, then all persons signing below acknowledge that this Agreement
      is given conditionally, based on the representation to Lender the non-signing
      party consents to the changes and provisions of this Agreement or otherwise
      will
      not be released by it. This waiver applies not only to any initial extension,
      modification or release, but also to all such subsequent actions.

    

    PRIOR
      TO SIGNING THIS AGREEMENT, BORROWER READ AND UNDERSTOOD ALL THE PROVISIONS
      OF
      THIS AGREEMENT. BORROWER AGREES TO THE TERMS OF THIS
      AGREEMENT.

    

    BORROWER
      ACKNOWLEDGES RECEIPT OF A COMPLETED COPY OF THIS CHANGE IN TERMS AGREEMENT
      AND
      ALL OTHER DOCUMENTS RELATING TO THIS DEBT.

    

    BORROWER:

    

    SOUTHERN
      IOWA BIOENERGY LLC    

    

    
      	
              By:
 

            	
              /s/
                William T. Higdon

            	 	
              By:
                 

            	
              /s/
                Alan Elefson

            	 
	 	
              William
                T. Higdon, President of Southern
                Iowa

            	 	 	
              Alan
                Elefson, Treasurer of Southern 

            	 
	 	
              BioEnergy
                LLC

            	 	 	
              Iowa
                BioEnergy LLC

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