Document:

Service Contract dated February 5, 2007

 Exhibit 10.18 
 Jake Hirshman 
 234 Fleming Drive 
 Alma, MI 48801 
 (248)-840-9519 
 Service Contract 
 THIS SERVICE CONTRACT begins
on February 1, 2007 by and between Jake Hirschman (Consultant) an individual having an address currently at 234 Fleming Drive, Alma, MI 48801 and Liberty Renewable Fuels, LLC a Delaware Company, having an address at P.O. Box 335 Owosso,
Michigan 48867. 
  

	 	1.	Scope of Services. These services will be performed under the direction of Liberty Renewable Fuels, LLC and will include, but not limited to, the following:

  

	 	A.	Completion of a detailed report to the Board of Managers outlining complete options for Liberty in considering biodiesel. In completing this report, Consultant shall complete
various informational research, conduct interviews and coordinate meetings with key industry representatives and Liberty staff. This report shall include: 

  

	 	i.	Description of the biodiesel production process 

  

	 	ii.	Description, advantages, and disadvantages of various feedstock options 

  

	 	iii.	Identification of possible feedstock supplies that would be feasible for Liberty’s consideration 

  

	 	iv.	Advantages, disadvantages and process considerations for using corn oil as a biodiesel feedstock 

  

	 	v.	Identification of production technology and available builders 

  

	 	vi.	Determination of project cost based on a description of process equipment required and provide input into development of a business model 

  

	 	vii.	Identification of methods for corn oil extraction on the front end or back end of the ethanol process – and the associated cost projections 

  

	 	viii.	Identification of possible cost savings for integration on site with ethanol plant 

  

	 	ix.	Identification of possible glycerin markets 

  

	 	x.	Coordination of site visits to operating biodiesel plants 

  

	 	B.	Exploration of synergistic projects that would complement Liberty’s bio-energy park concept, including but not limited to: 

  

	 	i.	Alternative product uses of DDG, including building materials 

  

	 	ii.	Alternative energy sources or projects that would have synergies with Liberty’s energy usage 

  

	 	iii.	Biomass utilization and other biomass technologies, including gassification 

  

	 	iv.	Production of petrochemical substitutes 

  

	 	v.	Coordination of presentations by Michigan universities and other technology developers to members of the Liberty Board of Managers 

  

	 	C.	Identification of various grant opportunities related to biofuels and biomass commercialization and assist in packaging grant proposals. 

  

	 	2.	Terms and Compensation. During the term of this agreement, fees shall be payable monthly at a rate of $3,500 per month. This contract shall commence on February 1, 2007
and terminate June 30, 2007. Consultant will also be reimbursed for reasonable expenses including mileage for attending meetings at locations other than Liberty’s office in Corunna and meals, lodging and other travel expenses for overnight
trips. Consultant will not be reimbursed mileage for travel between the office of the Consultant (which will be located in Michigan) and the office of Liberty Renewable Fuels, LLC in Owosso, Michigan. 

  

	 	3.	Termination. This agreement may be terminated by either party at anytime, for just cause, during its duration upon thirty (30) days written notice.

  

	 	4.	Governing Law. This agreement shall be governed by the laws of the state of Michigan. 

  

	 	5.	Independent Contractor – Third Parties. In performing services under this agreement, Jake Hirschman shall at all times operate as, and have the status of, an independent
contractor and shall not act as or be an employee of Liberty Renewable Fuels, LLC. The parties agree to look solely to each other with respect to performance of the agreement and the services to be provided hereunder. This agreement and each and
every provision hereof are for the exclusive benefit of Liberty Renewable Fuels, LLC and Jake Hirschman and not for the benefit of any third party. 

  

	 	6.	Taxes. Consultant shall be solely responsible for paying any federal, state and local taxes as may be imposed upon the income derived by said Consultant through this
contract. 

  

	 	7.	Conflict of Interests. Consultant represents that it does not presently have any interest and will not acquire any interest, direct or indirect, that would conflict in any
manner with the performance of this contract and the scope of services provided herein. 

  

	 	8.	 Confidentiality. All information furnished to, developed or obtained by Jake Hirschman and his employees in the course of performance of services hereunder
shall be kept confidential and shall not be disclosed to any other 

  

 2 

 
person or organization other than as required for the proper performance of services hereunder. This provision shall not apply to information which is in or
becomes a part of the public domain through no fault of Jake Hirschman or his employees. Consultant will execute Liberty’s confidentiality and non-compete agreement as well. 
  

	 	9.	Renegotiations. This contract may be renegotiated with a 30 days written notice by the Consultant or Liberty Renewable Fuels, LLC. 

  

	 	10.	Miscellaneous. This contract represents the entire agreement of the parties relating to the subject matter hereof, and it may not be amended, modified or waived other than in
writing signed by the party against whom such amendment, modification or waiver is sought to be enforced. 

 Agreed and accepted this 5th day
of February, 2007 by: 
  

					
	/s/ David Skjaerlund	 		 	
	Liberty Renewable Fuels, LLC	 		 	
			
	/s/ Jake Hirschman	 		 	
	Jake Hirschman	 		 	
		 		 	

  

 3Letter Agreement dated January 2, 2007

 Exhibit 10.19 
 [CLIFTON GUNDERSON LOGO APPEARS HERE] 
 January 2, 2007 
 Mr. David Skjaerlund 
 President & CEO 
 Liberty Renewable Fuels, LLC 
 P.O. Box 335 
 Owosso, MI 48867 
  

	RE:	Due Diligence Procedures - Auburn Bean and Grain Co. 

 Dear Mr.
Skjaerlund: 
 We are pleased to serve you on this agreed-upon procedures engagement. The purpose of this letter is to confirm the terms of our agreement and
to clarify the nature and extent of the services to be provided. 
 Mr. Jeffrey Brandenburg and Mr. Allan Dassow will be the client partners
responsible for these services to be provided to you. Mr. John Carpenter also will be assigned to you. This arrangement assures that another person you know will be familiar with your operations. We hope you will call any of these people when
you believe the firm can be of assistance. 
 Our services will include: 
 We will apply the agreed-upon procedures listed in the attached schedule (Schedule A) to books and records of Auburn Bean and Grain Co. (“Auburn”) as of December 31, 2006. This engagement is solely to assist Liberty Renewable
Fuels, LLC (“Liberty”) in the purchase of Auburn’s outstanding stock and certain real estate from KMA Group, LLC as identified in the signed Letter of Intent. 
 In connection with the services we provide, we will not perform management functions, make management decisions, or act in a capacity equivalent to that of a member of management or an employee. 
 You are responsible for management decisions and functions, and for designating a competent employee to oversee these services. You are responsible for evaluating the
adequacy and results of the services performed and accepting responsibility for the results. You are also responsible for establishing and maintaining internal controls, including monitoring ongoing activities. 
 Our engagement to apply agreed-upon procedures will be conducted in accordance with standards established by the American Institute of Certified Public Accountants. The
sufficiency of the procedures is solely the responsibility of the specified party of the report. Consequently, we make no representation regarding the sufficiency of the procedures described in the attached schedule either for the purpose for which
this report has been requested or for any other purpose. If, for any reason, we are unable to complete the procedures, we will not issue a report as a result of the engagement. 
 440 Science Drive, Suite 400 
 Madison, Wisconsin 53711 
 tel : 608.232.2900 
 fax: 608.232.2919 
  

					
	www.cliftoncpa.com	  	Offices in 14 states and Washington, DC	  	

 Mr. David Skjaerlund 
 Liberty Renewable Fuels, LLC 
 January 2, 2007 
 Page 2 
 We are not responsible for the preparation of any tax return, report to any governmental agency, or any other form, return, or report, or
for providing advice not specifically recited in this letter. 
 This letter constitutes the entire agreement regarding services to be provided to you and
supersedes all prior agreements, understandings, negotiations, and discussions between us, whether oral or written. This agreement may be supplemented by other written agreements. 
 Because the agreed-upon procedures listed in the attached schedule do not constitute an examination or a review, we will not express an opinion or limited assurance on Auburn’s financial statements or any
elements, accounts, or items thereof. Also, we will not express an opinion or limited assurance on the effectiveness of Auburn’s internal control over financial reporting or any part thereof. 
 We have no obligation to perform any procedures beyond those listed in the attached schedule. If, however, as a result of the procedures we perform, matters come to our
attention that cause us to believe additional procedures should be performed, we will disclose those matters in our report. Such disclosures, if any, may not necessarily include all matters which might have come to our attention had we performed
additional procedures or an audit. 
 We may submit a report listing the procedures performed and the results of those procedures. You will notify us if a
written report is needed. This report is solely for the use of Liberty Renewable Fuels, LLC, and should not be used by those who did not agree to the procedures. Our report will contain a paragraph indicating that had we performed additional
procedures, other matters might have come to our attention that would have been reported to you. If the need for additional procedures arises, our agreement with you will need to be revised. If additional specified parties of the report are added,
we will require that they acknowledge in writing their responsibility for the sufficient of procedures. If for any reason, we are unable to complete the engagement, we may decline to issue a report and terminate our engagement. 
 You understand that this an unaudited service. This services is not specifically designed, and should not be relied upon to disclose fraud, defalcations, other illegal
acts, or errors or similar irregularities, should any exist. 
 Our relationship with you is limited to that described in this letter. As such, you
understand and agree that we are acting solely as independent accountants. We are not acting in any way as a fiduciary or assuming any fiduciary responsibilities for you. 
 Whenever possible, we will use your personnel to assist in this work and so reduce costs. 
 We wish to emphasize that
management has be responsibility for the proper recording of transactions and for the safeguarding of assets. Management’s responsibility includes the retention, supervision and training of qualified personnel in areas affecting financial
matters. 
 As part of this responsibility, you agree to provide us, before the delivery date of the agreed-upon procedures report, with written confirmation
of the representations made to us by you and your staff during the course of our engagement. 

 Mr. David Skjaerlund 
 Liberty Renewable Fuels, LLC 
 January 2, 2007 
 Page 3 
 You agree to authorize Auburn’s accountant/auditor to respond fully to any inquiries we may find necessary. If we find it necessary,
you will authorize their accountant/auditor to allow us to review their working papers. You will be responsible for any fees billed by Auburn’s accountant/auditor for time or expenses in connection with our firm reviewing their workpapers and
related inquiries. 
 It is our understanding that the primary intent of engaging our professional services is for the benefit of Liberty Renewable Fuels,
LLC. Our services are not intended to benefit or influence any other person or entity. 
 The working papers for our engagement are the sole and exclusive
property of Clifton Gunderson LLP and constitute confidential and proprietary information. We do not provide access to our workpapers to you or anyone else in the normal course of business. Should we be ordered by a valid subpoena or other
appropriate court order to provide access to or copies of our workpapers, you agree to reimburse us for the time and out-of-pocket expense necessary to comply with such order. 
 The charges for our work are to be based upon the time involved, degree of responsibility assumed and skills
required, plus direct expenses. Bills for services are due when submitted. Interim bills may be submitted at periodic dates to cover charges and expenses incurred. If a bill for services is not paid when due, we reserve the right to cease work and
withdraw from the engagement. In that event, we will charge interest on the unpaid balance at the monthly rate of 1 1/2%, which is an ANNUAL PERCENTAGE RATE OF 18%. In the event that any collection action is required to collect unpaid balances due us, reasonable attorney fees and expenses shall be recoverable. We will require a retainer of $10,000
prior to beginning this engagement. The retainer will be applied to our final billing in this matter, which will be rendered at the time we deliver our findings. 
 We will do our uppermost to provide quality service to you. We do not anticipate any difficulties in meeting the expectations recited in this letter. However, in the unlikely event that there are any disagreements
regarding our services, any claims against Clifton Gunderson LLP as a result of this engagement must be brought within one year from the date our report is delivered or our work is completed. 
 You hereby agree that Liberty Renewable Fuels, LLC will indemnify Clifton Gunderson LLP and its partners, principals and employees and hold them harmless from any
claims, liabilities, losses and costs arising in circumstances where there has been a knowing misrepresentation by a member of the management of Liberty Renewable Fuels, LLC or Auburn Bean and Grain Co., regardless of whether such person was acting
in the best interests of Liberty Renewable Fuels, LLC or Auburn Bean and Grain Co. 
 You hereby agree
that if any statement is not paid within 30 days from its date, that the balance remaining from time-to-time unpaid shall draw interest at the monthly rate of 1 1/2%, which is an ANNUAL PERCENTAGE RATE OF 18%. 
 If the above terms are in
accordance with your understanding and acceptable to you, please sign, date, and return the duplicate copy of this letter to us. 

 Mr. David Skjaerlund. 
 Liberty Renewable Fuels, LLC 
 January 2, 2007 
 Page 4 
 We very much appreciate the opportunity to serve you and will be pleased to discuss any questions you may have. 
 Very truly yours, 
 CLIFTON GUNDERSON LLP 
 The services described in the foregoing letter are in accordance with our requirements and we understand the terms and conditions recited above. 
  

			
	Liberty Renewable Fuels, LLC
	
	  

	By
	  

	Title
	  

	Date

 Schedule A 
 Attachment to Due Diligence Procedures – Auburn Bean and Grain Co. 
 The following agreed-upon procedures will be
performed. Additional procedures may be performed at the direction and control of Liberty Renewable Fuels, LLC. 
  

	 	•	 	 Review the documents as identified in Exhibit A to the Letter of Intent. 

  

	 	•	 	 Review the documents as identified in Exhibit B to this Engagement Letter. 

  

	 	•	 	 Analyze the past 3-years of financial statements for trends, non-recurring and/or unusal items and ratio analysis. 

  

	 	•	 	 Review and inquire of footnote disclosures to the financial statements for the past three years. 

  

	 	•	 	 Review and inquire of material contracts (contracts that exceed a net present value of $20,000), including shareholder agreements, buy/sell agreements, employement
agreements, convenants not to compete agreements, loan and lease agreements, and deferred compensation agreements. 

  

	 	•	 	 Review legal and accounting invoices for the past three years. 

  

	 	•	 	 Review and inquire of material grain and commodity contracts (contracts that exceed a net present value of $20,000). 

 Schedule B 
 Attachment to Due Diligence Procedures – Auburn Bean and Grain Co. 
 Document Request List 
  

	 	•	 	 December 31, 2006 Daily Position Report for all commodities. 

  

	 	•	 	 December 31, 2006 Grain Long/Short Report, including all support for purchases, sales and Board of Trade contracts. 

  

	 	•	 	 Listing of all commodity brokers used within the last 3-years. 

  

	 	•	 	 Bookings, prepaids or contracted amounts for fixed price fertilizers, chemicals or other commodities if maintained, including December 31, 2006 long/short
report for commodities other than grain. 

  

	 	•	 	 December 31, 2006 prepaid agronomy product listing with identified vendors. 

  

	 	•	 	 Copy of written risk management policy for grain and agronomy commodities – if no policy, then Board of Director, or equivalent, authorized long/short position
risk tolerance guidelines. 

  

	 	•	 	 Outside CPA’s management letter for the past 3-years, if applicable. 

  

	 	•	 	 Outside consultant reports for the past 3-years, if applicable. 

  

	 	•	 	 All employment contracts. 

  

	 	•	 	 All compensation contracts, whether current or deferred. 

  

	 	•	 	 All stock option agreements, if applicable. 

  

	 	•	 	 Most recent reconciled internal and external prepared financial statements, including balance sheet, income statement and statement of cash flows.

  

	 	•	 	 Past 3-years internal year-end financial statements. 

  

	 	•	 	 General ledger from July 1, 2004 to present. 

  

	 	•	 	 Past 3-years depreciation schedules. 

  

	 	•	 	 Listing of any pending, or ongoing, patent, trademark, service mark, or any other intangible work. 

  

	 	•	 	 Identify all software programs and verify all are properly licensed to Auburn. 

  

	 	•	 	 Copy of all environmental reports/memos prepared internally or externally. 

  

	 	•	 	 Copies of all royalty and licensing agreements. 

  

	 	•	 	 Copies of all warranty servicing agreements. 

  

	 	•	 	 Copies of all personal guarantees to or from Auburn and the applicable KMA properties. 

  

	 	•	 	 Aged accounts receivable and payable report as of December 31, 2006. 

  

	 	•	 	 Copies of all appraisals and valuations performed within the last 3-years. 

  

	 	•	 	 Copies of all retirement plan documents.

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