Document:

EXHIBIT
10.15

SECOND
AMENDMENT TO

REAL ESTATE OPTION AGREEMENT

THIS SECOND AMENDMENT  is
entered into between Freeport Area Economic
Development Foundation, an Illinois not-for profit Corporation,
herein referred to as “Optionor,” and Blackhawk Biofuels, LLC, herein
referred to as “Optionee.

RECITALS

A.            Optionor
and Optionee have entered into a Real Estate Option Agreement dated June 20,
2006, a copy of said Agreement is attached hereto marked Exhibit A.

B.            Optionor
and Optionee entered into an Amendment to Real Estate Option Agreement dated
November 27, 2006.  The Amendment
extended the Real Estate Option Agreement until March 31, 2007.  A copy of said Amendment is attached hereto
marked Exhibit B.

C.            The
parties desire to further extend the date for the exercise of the Option as set
forth.

AGREEMENT

NOW, THEREFORE, the parties agree as follows:

1.             Paragraph
3(b) of the Real Estate Option Agreement is amended effective the date hereof
to read as follows:

This
Option shall remain in effect until June 30, 2007.  Optionee may exercise this Option at any time
prior to said date.

2.             Except
as herein set forth, all other terms and conditions of the Real Estate Option Agreement
remain the same and in full force and effect.

IN WITNESS WHEREOF, the parties have executed this Second
Amendment.

	
  

  	
   

  	
  OPTIONOR:

  
	
   

  	
   

  	
   

  
	
  Dated: March 20, 2007

  	
   

  	
  FREEPORT AREA ECONOMIC

  DEVELOPMENT FOUNDATION

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By

  	
  /S/ Robert J. Skurla

  	
   

  
	
   

  	
   

  	
   

  	
  Robert Skurla, Executive Director

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  OPTIONEE:

  
	
   

  	
   

  	
   

  
	
  Dated: March 20, 2007

  	
   

  	
  BLACKHAWK BIOFUELS, LLC

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By

  	
  /S/ Ronald Mapes 

  	
   

  
	
   

  	
   

  	
   

  	
  Ronald Mapes, Chair

  

 

This Instrument
Prepared by:

Attorney Dan G.
Fishburn

Snow, Hunter,
Whiton & Fishburn, Ltd.

8 East Stephenson
Street

Freeport, IL 61032
(815-235-2511)

REAL
ESTATE OPTION AGREEMENT

THIS
AGREEMENT entered into this 20th day of June, 2006, between Freeport Area Economic Development Foundation, an
Illinois not-for-profit corporation, herein referred to as “Optionor,”
whose address is 27 W. Stephenson Street, Freeport, Illinois 61032, and Blackhawk Biofuels, LLC, herein referred to
as “Optionee, “ whose address is 22 S. Chicago Avenue, Freeport, Illinois
61032.

1.             Consideration and
Grant of Option.  In consideration of
the payments herein set forth from Optionee to Optionor, Optionor hereby grants
to Optionee an option to purchase Lot 7 in the Replat of Mill Race Industrial
Park (a copy of the draft of the Replat is attached hereto marked at Exhibit A)
which is located in the Stephenson County Economic Development area in
Stephenson County, Illinois (herein referred to as the “Property”), together
with all easements and appurtenances thereto, for the price and within the time
specified herein.  This Real Estate
Option Agreement is contingent upon Optionor obtaining all necessary government
approval and the filing of the Replat of Mill Race Industrial Park in
accordance with the Replat which is attached hereto.  In the event the Replat is not approved, this
Option Agreement shall be null and void and any monies paid to Optionor by
Optionee shall be refunded to Optionee.

2.             Payment for Option.  Optionee shall pay Optionor the sum of Eight
Hundred Twenty-five Dollars ($825.00) per month on the first of each month
commencing August 1, 2006, and on the first of each month thereafter.  Said payment shall be in consideration for
the Option granted to Optionee.  The
payment will not be applied to the purchase price in the event Optionee
exercises this Option.  In the event
Optionee fails to exercise the Option according to its terms, Optionor shall
retain all sums paid under the terms of this Option Agreement.

3.             Exercise of Option.  This option may be exercised by Optionee as
follows:

A.            By written notice from
Optionee to Optionor, at the address provided herein, which written notice
shall provide for a date for closing within 60 days of the date of the written
notice.

B.            This option shall
remain in effect until December 31, 2006. 
Optionee may exercise this option at any time prior to said date.

C.            If Optionee fails to
exercise this option within the time period set forth above, Optionee’s right
to exercise the option and purchase the Property shall automatically terminate
and this agreement shall be of no force and effect.

4.             Non-Exercise of
Option.  In the event Optionee does
not exercise the option to purchase the Property, the consideration paid to
Optionor pursuant to Paragraph 2 above shall be forfeited and remain the
property of Optionor.

5.             Assess to Property.  During the option period, Optionee shall be
granted access to the property to perform any necessary due diligence as
required by Optionee.  Provided however,
Optionee shall respect the rights of the current tenants on the premises and
shall not disrupt or interfere with the tenants or their business.  Optionee shall return the Property to its
original condition after the completion of any tests, surveys or
inspections.  All costs of due diligence
studies shall be borne by Optionee.

6.             Purchase Price and
Terms of Payment.  The purchase price
paid for the property shall be $15,000.00 per surveyed acre.  Optionor and Optionee agree that upon the
exercise of the Option, the parties shall sign an Agreement for Deed, prepared
by Optionee’s attorney and approved by Optionor’s attorney, the exercise of the
option shall be contingent upon both parties executing an Agreement for Deed
which is acceptable to both Optionor and Optionee.  The purchase price shall be determined by
survey, the total purchase price shall be the number of surveyed acres times
the price per acre as hereinabove set forth.

7.             Notice.  All notices provided for in this instrument,
if not delivered in person, shall be sent by U.S. Certified Mail, Return
Receipt Requested, to the party at the address given above, or to any other
address either party may have designated for receipt of such notices by written
notice of a change of address.

8.             Representations.  Optionor and Optionee hereby warrant and
represent to each other that no real estate broker has participated in this
transaction and that this instrument contains the entire agreement of the
parties and that any prior discussions or negotiations not set forth in this
Agreement are of no further force and effect.

9.             Assignment.  Optionor and Optionee agree that this Option
may be assigned by Optionee without the prior written consent of Optionor and
that assignee of Optionee shall have all rights of Optionee hereunder.

10.           Governing Law.  This Agreement shall be governed by the laws
of the State of Illinois.

11.           Prior Agreement Void.  Upon the execution of this Amended Real
Estate Option Agreement, the prior Real Estate Option Agreement between the
parties dated March 10, 2006, shall be null and void and of no further force
and effect.

IN WITNESS WHEREOF, the
parties have executed this Option the day and year first above written.

	
  

  	
  OPTIONOR:

  
	
   

  	
   

  
	
   

  	
  FREEPORT AREA ECONOMIC DEVELOPMENT

  FOUNDATION

  
	
   

  	
   

  
	
   

  	
  By

  	
  /S/ Robert J. Skurla

  	
   

  
	
   

  	
   

  	
  Robert Skurla, Executive Director

  
	
   

  	
   

  	
   

  
	
   

  	
  OPTIONEE:

  
	
   

  	
   

  
	
   

  	
  BLACKHAWK BIOFUELS, LLC

  
	
   

  	
   

  	
   

  
	
   

  	
  By

  	
  /S/ Ronald L. Mapes, Chair

  	
   

  
	
   

  	
   

  	
  Member

  

 

Instrument Prepared by:

Attorney Dan G. Fishburn

Snow, Hunter, Whiton
& Fishburn, Ltd.

8 East Stephenson Street

Freeport, IL 61032
(815-235-2511)

[SURVEY]

EXHIBIT A

AMENDMENT
TO

REAL
ESTATE OPTION AGREEMENT

THIS
AMENDMENT TO REAL ESTATE OPTION AGREEMENT is entered into this 27th day of November, 2006, between Freeport Area Economic Development Foundation, an
Illinois not-for-profit corporation, as Optionor, and Blackhawk Biofuels, LLC, as Optionee.

1,             Extension of
Option.  Paragraph 3(b) of the Real
Estate Option Agreement dated June 20, 2006 (the “Option Agreement”) is hereby
amended to replace the date “December 31, 2006” with “March 31, 2007”.

2.             Other Terms of
Option Agreement.  Except as amended
by paragraph 1 hereof, all other terms of the Option Agreement shall remain in
full force and effect between the parties.

IN WITNESS WHEREOF, the parties have executed this
Amendment to Real Estate Option Agreement the day and year first above written.

	
  

  	
  OPTIONOR:

  
	
   

  	
   

  
	
   

  	
  FREEPORT AREA ECONOMIC

  DEVELOPMENT FOUNDATION

  
	
   

  	
   

  
	
   

  	
  By

  	
  /S/ Robert J. Skurla

  	
   

  
	
   

  	
   

  	
  Robert Skurla, Executive Director

  
	
   

  	
   

  	
   

  
	
   

  	
  OPTIONEE:

  
	
   

  	
   

  
	
   

  	
  BLACKHAWK BIOFUELS, LLC

  
	
   

  	
   

  	
   

  
	
   

  	
  By

  	
  /S/ Ronald Mapes

  	
   

  
	
   

  	
   

  	
  Chair

  

 

EXHIBIT BExhibit
10.16

BreitBurn
Energy Partners L.P.

2006 Long-Term Incentive Plan

Restricted Phantom Units Award Agreement

Grantee:

Grant Date:           

This 2006 Long-Term Incentive Plan Agreement is
between BreitBurn GP, LLC (the “Company”), as the general partner of BreitBurn
Energy Partners L.P., a Delaware limited partnership, and
                      ,
a Director of the Company (referred to herein as “you”).

1.                                       Grant of Restricted  Phantom Units with DERs.  The Company hereby grants to you
[        ] Restricted Phantom Units
under the 2006 BreitBurn Energy Partners L.P. Long-Term Incentive Plan (the
“Plan”) on the terms and conditions set forth herein. This grant of Restricted
Phantom Units includes a tandem DER grant with respect to each Restricted Phantom
Unit.  The Company shall establish a DER
bookkeeping account for you with respect to each Restricted Phantom Unit
granted that shall be credited with an amount equal to any cash distributions
made by the Company on a Common Unit during the period such Restricted Phantom
Unit is outstanding and deemed reinvested in Restricted Phantom Units based on
the Fair Market Value on the date of such cash distribution.  In the event of any conflict between the
terms of this Agreement and the Plan, which is incorporated herein by reference
as a part of this Agreement, the terms of the Plan shall control.  Capitalized terms used in this Agreement but
not defined herein shall have the meanings ascribed to such terms in the Plan,
unless the context requires otherwise.

2.                                       Vesting.  Except as otherwise
provided in Paragraph 3 below, the Restricted Phantom Units granted hereunder
shall vest on the third anniversary of the Grant Date as follows:

	
  Third Anniversary of

  Grant Date

  	
   

  	
  Cumulative

  Vested Percentage

  	
   

  
	
  [                  ]

  	
   

  	
  100

  	
  %

  

 

Upon
vesting of a Restricted Phantom Unit under this grant, the Restricted Phantom
Units attributable to the reinvestment from the amount credited to your tandem
DER account with respect to such Restricted Phantom Unit shall also vest. If a
Restricted Phantom Unit is forfeited, the amount credited to your tandem DER
account with respect to such Restricted Phantom Unit shall be similarly
forfeited.

3.                                       Events Occurring Prior to Full Vesting.

(a)                                  Death or Disability.  If your service as a member of the Board of
Directors of the Company terminates as a result of your death or a disability
that entitles you to benefits under the Company’s or an Affiliate’s long-term
disability plan, the Restricted Phantom Units then held by you, including
Restricted Phantom Units attributable to the reinvestment from the amount
credited to your tandem DER account, automatically will become fully vested
upon such termination.

(b)                                 Other Terminations.  If your service as a member of the Board of
Directors of the Company terminates for any reason other than as provided in
Paragraph 3(a) above, all Restricted Phantom Units then held by you, including
Restricted Phantom Units attributable to the reinvestment from the amount
credited to your tandem DER account, automatically shall be forfeited without
payment upon such termination.

(c)                                  Change of Control.  All outstanding Restricted Phantom Units held
by you and all DERs reinvested in Restricted Phantom Units automatically shall
become fully vested upon a Change of Control.

For
purposes of this Paragraph 3, except to the extent provided otherwise by
Section 409A of the Internal Revenue Code or regulations thereunder, “a
termination of service as a member of the Board of Directors of the Company”
shall not include a change of status between any of the following: an Employee
or a Director of, or a Consultant to, the Company or an Affiliate of the
Partnership.

4.                                       Payments.

(a)                                  Restricted Phantom Units.  On the first business day following the date
a Restricted Phantom Unit vests, the Company or an Affiliate shall pay you a
Unit.

(b)                                 DERs. 
At the same time the vested Restricted Phantom Unit is paid, the vested
amount then credited to your tandem DER account and reinvested in Restricted
Phantom Units shall be paid to you in accordance with Section 4.(a) herein.

5.                                       Withholding of Taxes.  To 
the  extent that a payment under
the Plan results in the receipt of compensation by you with respect to which
the Company or an Affiliate has a tax withholding obligation pursuant to applicable
law, and unless other arrangements have been made by you that are acceptable to
the Company or such Affiliate, you shall deliver to the Company or the
Affiliate such amount of money as the Company or the Affiliate may require to
meet its withholding obligations under such applicable law.  

No
issuance of Common Units shall be made pursuant to this Agreement until you
have paid or made arrangements approved by the Company or the Affiliate to
satisfy in full the applicable tax withholding requirements of the Company or
Affiliate with respect to such event.

6.                                       Limitations Upon Transfer.  All rights under this Agreement shall belong
to you alone and may not be transferred, assigned, pledged, or hypothecated by
you in any way (whether by operation of law or otherwise), other than by will
or the laws of descent and distribution and shall not be subject to execution,
attachment, or similar process.  Upon any
attempt by you to transfer, assign, pledge, hypothecate, or otherwise dispose
of such rights contrary to the provisions in this Agreement or the Plan, or
upon the levy of any attachment or similar process upon such rights, such
rights shall immediately become null and void.

7.                                       Binding Effect.  This Agreement shall be binding upon and
inure to the benefit of any successor or successors of the Partnership and upon
any person lawfully claiming under you.

8.                                       Entire Agreement.  This Agreement constitutes the entire
agreement of the parties with regard to the subject matter hereof, and contains
all the covenants, promises, representations, warranties and agreements between
the parties with respect to the Restricted Phantom Units granted hereby.  Without limiting the scope of the preceding
sentence, all prior understandings and agreements, if any, among the parties
hereto relating to the subject matter hereof are hereby null and void and of no
further force and effect.

9.                                       Modifications.  Except as provided below, any modification of
this Agreement shall be effective only if it is in writing and signed by both
you and an authorized individual on behalf of the Company.

10.                                 Governing Law.  This grant shall be governed by, and
construed in accordance with, the laws of the State of Delaware, without regard
to conflicts of laws principles thereof.

IN WITNESS WHEREOF
the parties have executed and delivered this Agreement effective as of the date
first written above.

 

	
  BREITBURN GP, LLC

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  [Outside
  Director]

  	
   

  
	
   

  	
   

  	
   

  
	
  By:

  	
   

  	
   

  	
   

  
	
  Name:

  	
   

  	
   

  	
   

  
	
  Title:

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