Document:

<Page>

                                                                     Exhibit 4.2

                         EAST KANSAS AGRI-ENERGY, L.L.C.
                             SUBSCRIPTION AGREEMENT
                                Membership Units

<Table>
<Caption>
                        BEFORE [DATE], 2002      AFTER [DATE], 2002 AND BEFORE        AFTER [DATE], 2002
                                                          [DATE], 2002
<S>                           <C>                            <C>                             <C>
OFFERING PRICE                $1,000                         $1,100                          $1,200
   PER UNIT
</Table>
                                 10 UNIT MINIMUM

The undersigned subscriber, desiring to become a member of East Kansas
Agri-Energy, L.L.C. ("EKAE"), a Kansas limited liability company, with its
principal place of business at 20477 S.W. Florida Road, Westphalia, Kansas
66093, hereby subscribes for the purchase of the membership interests of EKAE,
and agrees to pay the related purchase price, identified below.

A.     SUBSCRIBER INFORMATION. Please print your individual or entity name and
address. Joint subscribers should provide their respective names. Your name and
address will be recorded exactly as printed below.

  1.      Subscriber's Printed Name     ________________________________________

  2.      Title, if applicable:         ________________________________________

  3.      Subscriber's Address:

             Street                     ________________________________________

             City, State, Zip Code      ________________________________________

B.     NUMBER OF UNITS PURCHASED. You must purchase at least 10 units. Your
ownership interest may not exceed 30% of all of our outstanding membership
units. Accordingly, assuming that we sell the minimum number of 9,000 Units in
this Offering, you may not purchase more than 3,066 Units. We presently have
1220 Units outstanding.

                 __________________

C.     PURCHASE PRICE. Indicate the dollar amount of your investment.

<Table>
 <S>                                      <C>                                         <C>
      1. TOTAL PURCHASE PRICE         =         2. TEN PERCENT (10%) 1ST       +      3. NINETY PERCENT (90%) 2ND
 (The Offering Price Per Unit from                   INSTALLMENT                             INSTALLMENT
 the appropriate time period above        (10% of the Total Purchase Price)           (90%  of the  Total  Purchase
 multiplied by the number in box B                                                    Price)
 above.)

 _________________________________    =    ________________________________    +      ______________________________
</Table>

D.     GENERAL INSTRUCTIONS FOR SUBSCRIBERS:

You should read the Prospectus dated September 1, 2002 (the "Prospectus") in its
entirety including financial statements and exhibits for a complete explanation
of an investment in EKAE. To subscribe, you must:

       1.   Complete all information required in this Subscription Agreement,
and date and sign this Subscription Agreement at page 5.

       2.   Complete all information required by the Member Signature Page of
the Operating Agreement, and date and sign the Member Signature Page (the last
page attached to this Subscription Agreement).

       3.   Immediately provide your personal (or business) check for the first
installment of ten percent (10%) of your investment amount made payable to
"GARNETT STATE SAVINGS BANK -- ESCROW AGENT FOR EKAE." You will determine this
amount in box C.2 on page 1 of this Subscription Agreement.

                                        1
<Page>

       4.   Execute the Promissory Note on page 7 of this Subscription Agreement
evidencing your commitment to pay the remaining ninety percent (90%) due for the
Units that is attached to this Subscription Agreement.

       5.   Deliver each of the original executed documents referenced in Items
1, 2, and 4 of these Instructions, together with your personal check described
in Item 3 of these Instructions to:

                           Garnett State Savings Bank
                                   5th and Oak
                                  P.O. Box 329
                              Garnett, Kansas 66032

       6.   Secure an additional personal (or business) check for the second
installment of ninety percent (90%) of your investment amount made payable to
"GARNETT STATE SAVINGS BANK -- ESCROW AGENT FOR EKAE" in satisfaction of the
Promissory Note. You will determine this amount in box C.3 on page 1 of this
Subscription Agreement. Deliver this check to the same address set forth above
in Instruction 5 within twenty (20) days of the date of EKAE's written notice
that its sales of Units have exceeded the Minimum Escrow Deposit of $9,000,000.

Your funds will be placed in EKAE's escrow account at Garnett State Savings
Bank, and the funds will be released to EKAE or returned to you in accordance
with the escrow arrangements described in the Prospectus. If EKAE rejects your
subscription, your Subscription Agreement and investment will be returned to you
within 30 days of such rejection, plus nominal interest, minus escrow fees. EKAE
may not consider the acceptance or rejection of your subscription until a future
date near the end of this Offering.

YOU MAY DIRECT YOUR QUESTIONS TO ONE OF OUR DIRECTORS LISTED BELOW OR TO EKAE AT
(785) 448-9697.

<Table>
<Caption>
                                             ADDITIONAL                                                    ADDITIONAL
     DIRECTOR          TELEPHONE NUMBER   TELEPHONE NUMBER         DIRECTOR          TELEPHONE NUMBER    TELEPHONE NUMBER
--------------------   ----------------   ----------------      -----------------    ----------------    ----------------
<S>                     <C>               <C>                   <C>                   <C>                <C>
William R. Pracht       (785) 489-2413                          Roger Brummel         (785) 448-2995
Daniel V. Morgan        (785) 867-2318                          Jill A. Zimmerman     (785) 448-5968
Scott A. Burkdoll       (785) 869-3860                          Glenn A. Caldwell     (785) 448-4174
Daniel L. Guetterman    (913) 533-2443                          Donald S. Meats       (620) 964-2642
Douglas L. Strickler    (620) 365-2739                          James Westagard       (785) 835-6496
</Table>

E.     ADDITIONAL SUBSCRIBER INFORMATION.  The subscriber, named above,
certifies the following under penalties of perjury:

       1.   FORM OF OWNERSHIP. Check the appropriate box (one only) to indicate
            form of ownership. If the subscriber is a Custodian, Corporation,
            Partnership or Trust, please provide the additional information
            requested.

            / /     Individual

            / /     Joint Tenants with Right of Survivorship (Both signatures
                    must appear in Item 7)

            / /     Corporation or Partnership (Corporate Resolutions or
                    Partnership Agreement must be enclosed)

            / /     IRA

            / /     KEOGH

            / /     Pension or Profit Sharing Plan

                                        2
<Page>

            / /     Trust

                    Trustee's Name: ________________________________________

                    Trust Date: ____________________________________________

            / /     Other: Provide detailed information in the space immediately
                    below.

       2.   SUBSCRIBER'S TAXPAYER INFORMATION. Check the appropriate box if you
            are a non-resident alien, a U.S. Citizen residing outside the United
            States or subject to back up withholding. KEOGHS should provide the
            taxpayer identification number of the account and the social
            security number of the accountholder. Trusts should provide their
            taxpayer identification number. Custodians should provide the
            minor's social security number. All individual subscribers and IRA
            subscribers should provide their social security number. Other
            entities should provide their taxpayer identification number.

            / /     Check box if you are a non-resident alien

            / /     Check box if you are a U.S. citizen residing outside of the
                    United States

            / /     Check this box if you are subject to backup withholding

            Subscriber's Social Security No.    ________________________

            Joint Subscriber's Social Security No.  ____________________________

            Taxpayer Identification No.         ________________________

       3.   MEMBER REPORT ADDRESS. If you would like duplicate copies of member
            reports sent to an address that is different than the address
            identified in section A, please complete this section.

            Address:   ___________________________________________

                       ___________________________________________

       4.   STATE OF RESIDENCE.

            State of Principal Residence:            ___________________________

            State where driver's license is issued   ___________________________

            State where income taxes are filed       ___________________________

            State(s) in which you have maintained your principal residence
            during the past three years:

                 a. _________________ b. _________________ c. _________________

       5.   SUITABILITY STANDARDS. You cannot invest in EKAE unless you meet
            one, or more, of the suitability tests set forth below. Please
            review the suitability tests and check the box(es) next to the
            following suitability test that you meet. For husbands and wives
            purchasing jointly, the tests above will be applied on a joint
            basis.

            / /     I (We) have annual income from whatever source of at least
                    $30,000 and a net worth of at least $30,000,  exclusive of
                    home, furnishings and automobiles; or

                                        3
<Page>

            / /     I (We) have a net worth of at least $75,000, exclusive of
                    home, furnishings and automobiles.

       6.   SUBSCRIBER'S REPRESENTATIONS AND WARRANTIES. You must read and
            certify your representations and warranties and sign and date this
            Subscription Agreement.

            By signing below the subscriber represents and warrants to EKAE that
            he, she or it:

            a.   has received a copy of and is familiar with and understands
                 EKAE's Prospectus, and all modifications or supplements
                 thereto;
            b.   has relied solely upon the Prospectus in evaluating the
                 purchase of the Units;
            c.   has been informed that the Units of EKAE are offered and sold
                 in reliance upon a federal securities registration, Kansas and
                 Missouri securities registrations, and exemptions from
                 securities registrations in various other states, and
                 understands that the Units to be issued pursuant to this
                 subscription agreement can only be sold to a person meeting
                 requirements of suitability;
            d.   has been informed that the securities purchased pursuant to
                 this Subscription Agreement have not been registered under the
                 securities laws of any state other than the States of Kansas
                 and Missouri, and that EKAE is relying in part upon the
                 representations of the undersigned Subscriber contained herein;
            e.   has been informed that the securities subscribed for have not
                 been approved or disapproved by the Securities and Exchange
                 Commission or the Kansas or Missouri Securities Departments or
                 any other regulatory authority, nor has any regulatory
                 authority passed upon the accuracy or adequacy of the
                 Prospectus;
            f.   intends to acquire the Units for his/her/its own account
                 without a view to public distribution or resale and that
                 he/she/it has no contract, undertaking, agreement or
                 arrangement to sell or otherwise transfer or dispose of any
                 Units or any portion thereof to any other person;
            g.   understands that there is no present market for EKAE's
                 membership units, that the membership units will not trade on
                 an exchange or automatic quotation system, that no such market
                 is expected to develop in the future and that there are
                 significant restrictions on the transferability of the
                 membership units;
            h.   has received a copy of the EKAE Operating Agreement, and
                 understands that upon closing the escrow by EKAE, the
                 subscriber and the membership units will be bound by the
                 provisions of the Operating Agreement which contains, among
                 other things, provisions that restrict the transfer of
                 membership units;
            i.   understands that the Units are subject to substantial
                 restrictions on transfer under federal and state securities
                 laws along with restrictions in the EKAE Operating Agreement
                 and agrees that if the membership units or any part thereof are
                 sold or distributed in the future, the subscriber shall sell or
                 distribute them pursuant to the terms of the Operating
                 Agreement, and the requirements of the Securities Act of 1933,
                 as amended, and applicable state securities laws;
            j.   meets the suitability test marked in Item 6 above and is
                 capable of bearing the economic risk of this investment,
                 including the possible total loss of the investment;
            k.   understands that EKAE will place a restrictive legend on any
                 certificate representing any unit containing substantially the
                 following language as the same may be amended by the Directors
                 of EKAE in their sole discretion:
                         THE TRANSFERABILITY OF THE UNITS REPRESENTED BY THIS
                         CERTIFICATE IS RESTRICTED. SUCH UNITS MAY NOT BE SOLD,
                         ASSIGNED, OR TRANSFERRED, NOR WILL ANY ASSIGNEE,
                         VENDEE, TRANSFEREE, OR ENDORSEE THEREOF BE RECOGNIZED
                         AS HAVING ACQUIRED ANY SUCH UNITS FOR ANY PURPOSES,
                         UNLESS AND TO THE EXTENT SUCH SALE, TRANSFER,
                         HYPOTHECATION, OR ASSIGNMENT IS PERMITTED BY, AND IS
                         COMPLETED IN STRICT ACCORDANCE WITH, APPLICABLE STATE
                         AND FEDERAL LAW AND THE TERMS AND CONDITIONS SET FORTH
                         IN THE AMENDED AND RESTATED OPERATING AGREEMENT AS
                         AGREED TO BY EACH MEMBER.

                         THE SECURITIES REPRESENTED BY THIS CERTIFICATE MAY NOT
                         BE SOLD, OFFERED FOR SALE, OR TRANSFERRED IN THE
                         ABSENCE OF

                                        4
<Page>

                         EITHER AN EFFECTIVE REGISTRATION UNDER THE SECURITIES
                         ACT OF 1933, AS AMENDED, AND UNDER APPLICABLE STATE
                         SECURITIES LAWS, OR AN OPINION OF COUNSEL SATISFACTORY
                         TO THE COMPANY THAT SUCH TRANSACTION IS EXEMPT FROM
                         REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS
                         AMENDED, AND UNDER APPLICABLE STATE SECURITIES LAWS.
            l.   and that, to enforce the above legend, EKAE may place a stop
                 transfer order with its registrar and stock transfer agent (if
                 any) covering all certificates representing any of the
                 membership units;
            m.   has knowledge and experience in business and financial matters
                 as to be able to evaluate the merits and risks of an investment
                 in the Units, believes that the investment in Units is suitable
                 for the subscriber and can bear the economic risk of the
                 purchase of Units including the total loss of the undersigned's
                 investment;
            n.   may not transfer or assign this subscription agreement, or any
                 of the subscriber's interest herein;
            o.   has written his, her, or its correct taxpayer identification
                 number under Item 3 on this subscription agreement; and
            p.   is not subject to back up withholding either because he, she or
                 it has not been notified by the Internal Revenue Service
                 ("IRS") that he, she or it is subject to backup withholding as
                 a result of a failure to report all interest or dividends, or
                 the IRS has notified him, her or it that he is no longer
                 subject to backup withholding (Note this clause (p) should be
                 crossed out if the backup withholding box in Item 3 is
                 checked).

SIGNATURE OF SUBSCRIBER/ JOINT SUBSCRIBER:

DATE:  _______________________________

INDIVIDUALS:                                          ENTITIES:

----------------------------------------     -----------------------------------
  Name of Individual Subscriber              Name of Entity (Please Print)
   (Please Print)

----------------------------------------     -----------------------------------
  Signature of Individual                    Print Name and Title of Officer

----------------------------------------     -----------------------------------
  Name of Joint Individual Subscriber        Signature of Officer
   (Please Print)

---------------------------------------------
  Signature of Joint Individual Subscriber

                                        5
<Page>

         ACCEPTANCE OF SUBSCRIPTION BY EAST KANSAS AGRI-ENERGY, L.L.C.:

East Kansas Agri-Energy, L.L.C. hereby accepts the subscription for the above
Units.

Dated this ___________ day of __________________________, 200___.

EAST KANSAS AGRI-ENERGY, L.L.C.

By:
    -----------------------------------

Its:
     ---------------------------------

                                        6
<Page>

                                 PROMISSORY NOTE

Date of Subscription Agreement: ___________________________________, 200__.

<Table>
<Caption>
                   IF BEFORE [DATE], 2002    IF AFTER [DATE], 2002 AND      IF AFTER [DATE], 2002
                                                BEFORE [DATE], 2002
<S>                        <C>                         <C>                         <C>
OFFERING PRICE             $1,000                      $1,100                      $1,200
   PER UNIT
</Table>

               Number of Units subscribed for at / / $1,000 per Unit, / / $1,100
               Per Unit, / / $1,200 Per Unit
-------------  (check box preceding price corresponding to purchase date)

               Total Purchase Price (price per Unit multiplied by number of
-------------  Units subscribed)

 (         )   Less Initial Payment (10% of Principal Amount)
-------------
               Principal Balance
-------------

FOR VALUE RECEIVED, the undersigned hereby promises to pay to the order of East
Kansas Agri-Energy, L.L.C., a Kansas limited liability company ("EKAE"), at its
principal office located at 20477 S.W. Florida Road, Westphalia, Kansas 66093,
or at such other place as required by EKAE, the Principal Balance set forth
above, either in installments or in one lump sum to be paid without interest
within 20 days following the call of the EKAE Board of Directors, as described
in the Subscription Agreement. In the event the undersigned fails to timely make
any payment owed, the entire balance of any amounts due under this Promissory
Note shall be immediately due and payable in full with interest at the rate of
12% per annum from the due date.

The undersigned agrees to pay to EKAE on demand, all costs and expenses incurred
to collect any indebtedness evidenced by this Promissory Note, including,
without limitation, reasonable attorneys' fees. This Promissory Note may not be
modified orally and shall in all respects be governed by, construed, and
enforced in accordance with the laws of the State of Kansas.

The provisions of this Promissory Note shall inure to the benefit of EKAE and
its successors and assigns.

The undersigned waives presentment, demand for payment, notice of dishonor,
notice of protest, and all other notices or demands in connection with the
delivery, acceptance, performance or default of this Promissory Note.

Dated:      , 200  .
OBLIGOR:                                     JOINT OBLIGOR:

--------------------------------------       -----------------------------------
Printed or Typed Name of Joint Obligor       Printed or Typed Name of Obligor

By:                                          By:
    ---------------------------------            -------------------------------
    (Signature)                                  (Signature)

-------------------------------------
Officer Title if Obligor is an Entity

-------------------------------------

-------------------------------------
Address of Obligor

                                        7
<Page>

                              MEMBER SIGNATURE PAGE

                                     ADDENDA
                                     TO THE
                         EAST KANSAS AGRI-ENERGY, L.L.C.
                    AMENDED AND RESTATED OPERATING AGREEMENT

     The undersigned does hereby represent and warrant that the undersigned, as
a condition to becoming a Member in East Kansas Agri-Energy, L.L.C. (the
"Company"), has received a copy of the Amended and Restated Operating Agreement,
dated March 13, 2002, and, if applicable, all amendments and modifications
thereto, and does hereby agree that the undersigned, along with the other
parties to the Amended and Restated Operating Agreement, shall be subject to and
comply with all terms and conditions of said Amended and Restated Operating
Agreement in all respects as if the undersigned had executed said Amended and
Restated Operating Agreement on the original date thereof and that the
undersigned is and shall be bound by all of the provisions of said Agreement
from and after the date of execution hereof.

INDIVIDUALS:                                         ENTITIES:

------------------------------------------   ----------------------------------
  Name of Individual Subscriber              Name of Entity (Please Print)
   (Please Print)

------------------------------------------   ----------------------------------
  Signature of Individual                    Print Name and Title of Officer

------------------------------------------   ----------------------------------
  Name of Joint Individual Subscriber        Signature of Officer
   (Please Print)

-----------------------------------------
  Signature of Joint Individual Subscriber

Agreed and accepted on behalf of the Company and its Members:

EAST KANSAS AGRI-ENERGY, L.L.C.

By:
    ----------------------------------

Its:
     ---------------------------------<Page>

                                                                     Exhibit 4.3

                                ESCROW AGREEMENT

     THIS ESCROW AGREEMENT (this "Agreement") is made this 1st day of May 2002,
by and between East Kansas Agri-Energy, L.L.C. a Kansas limited liability
company ("EKAE") and Garnett State Savings Bank as escrow agent (the "Escrow
Agent").

                              W I T N E S S E T H:

     WHEREAS, EKAE proposes to offer a minimum 9,000 and a maximum of 18,000 of
its Membership Units (the "Units") at a price of $1,000 per Unit, in minimum
blocks of ten (10) Units in an offering in the States of Kansas and Missouri,
and possibly other states, made pursuant to an registration under the provisions
of the Securities Act of 1933, as amended (the "Offering");

     WHEREAS, EKAE will file a registration statement to register the Units with
the Securities and Exchange Commission, the States of Kansas and Missouri, and
possibly other states;

     WHEREAS, EKAE will allow investors in the Offering to delivery the purchase
price of the subscribed Units in installments; and

     WHEREAS, EKAE desires to comply with the requirements of the Securities Act
of 1933 and of the various state regulatory statutes and regulations, and
desires to protect the investors in the Offering by providing, under the terms
and conditions herein set forth, for the return to subscribers of the money
which they may pay on account of purchases of Units in the Offering if the
Minimum Escrow Deposit (hereinafter defined) is not deposited with the Escrow
Agent.

     NOW, THEREFORE, in consideration of the mutual covenants herein contained
and for other good and valuable consideration, the receipt and sufficiency of
which is acknowledged, the parties agree as follows:

     1.   ACCEPTANCE OF APPOINTMENT. Garnett State Savings Bank hereby agrees to
act as escrow agent under this Agreement. The Escrow Agent shall have no duty to
enforce any provision hereof requiring performance by any other party hereunder.

     2.   ESTABLISHMENT OF ESCROW ACCOUNT. An escrow account (the "Escrow
Account") is hereby established with the Escrow Agent for the benefit of the
investors in the Offering. Except as specifically provided in this Agreement,
the Escrow Account shall be created and maintained subject to the customary
rules and regulations of the Escrow Agent pertaining to such accounts.

     3.   OWNERSHIP OF ESCROW ACCOUNT. Until such time as the funds deposited in
the Escrow Account (the "Deposited Funds") shall equal the Minimum Escrow
Deposit (as hereinafter defined), all funds deposited in the Escrow Account by
EKAE shall not become the property of EKAE or be subject to the debts of EKAE or
any other person but shall be held by the Escrow Agent solely for the benefit of
the investors who have purchased Units in the Offering.

                                        1
<Page>

     4.   DEPOSIT OF PROCEEDS. All proceeds from sales of Units in the Offering
shall be delivered by EKAE to the Escrow Agent, within forty-eight hours of the
receipt thereof from investors, endorsed (if appropriate) to the order of the
Escrow Agent, together with an appropriate written statement setting forth name,
address and social security number of each person purchasing Units, the number
of Units purchased, and the amount paid by each such purchaser. Any such
proceeds deposited with the Escrow Agent in the form of uncollected checks shall
be promptly presented by the Escrow Agent for collection through customary
banking and clearing house facilities. As the proceeds of each sale are
deposited with the Escrow Agent, EKAE shall reserve the number of Units
confirmed to the purchaser thereof in connection with such sale. All such
deposited proceeds are referred to herein as the "Escrow Funds".

     5.   INVESTMENT OF ESCROW ACCOUNT. The Escrow Funds shall be credited by
Escrow Agent and recorded in the Escrow Account. The Escrow Agent shall be
permitted, and is hereby authorized to deposit transfer, hold and invest all
funds received under this Agreement, including principal and interest, in a
Repurchase Agreement at Garnett State Savings Bank, to yield a variable interest
rate equal to the Federal Reserve Discount rate for the Kansas City Region minus
1/4%, variable daily as the Federal Reserve Discount rate changes. Escrow Agent
shall pledge bank investments guaranteed by the U.S. Government or its agencies
to secure the Repurchase Agreement. Any interest received by Escrow Agent with
respect to the Escrow Funds shall be paid to EKAE on the termination of the
escrow.

     6.   TERMINATION OF ESCROW. This Agreement and the Escrow created hereunder
shall be terminated as provided in paragraph 7 hereof or as of the date in
calendar year 2003 (the "Termination Date") one year following the date in
calendar year 2002 upon which the Securities and Exchange Commission authorizes
the Offering (the "Offering's Effective Date"). EKAE shall notify Escrow Agent
of the Offering's Effective Date within thirty (30) days of its receipt from the
Securities and Exchange Commission. In no event shall the Termination Date be
later than December 31, 2003.

     7.   DISPOSITION OF ESCROW FUNDS. The Escrow Agent shall have the following
duties and obligations under this Agreement:

     A.   The Escrow Agent shall send a written notice acknowledging the receipt
of the Deposited Funds every seven days to EKAE. The Escrow Agent shall give
EKAE prompt written notice when the Deposited Funds total $500,000, $900,000,
$1.4 million, and $1.6 million.

     B.   The Escrow Agent shall give EKAE prompt written notice when the
Deposited Funds equal $900,000. Following receipt of such notice, EKAE will
advise the purchasers of Units to remit to the Escrow Agent the balance of the
purchase price within twenty (20) days. Thereafter, Escrow Agent shall give EKAE
prompt written notice when the Deposited Funds total $5.0 million, $9.0 million,
$14.0 million, and $16.0 million.

     C.   At the time (and in the event) that: (a) the Deposited Funds shall,
during the term of this Agreement, equal $9.0 million in subscription proceeds
(exclusive of interest) (the "Minimum Escrow Deposit"), (b) the Escrow Agent
shall have received written confirmation from EKAE that

                                        2
<Page>

EKAE has obtained a written debt financing commitment sufficient to carry out
its business plan, and (c) EKAE has affirmatively elected, in writing, to
terminate this Agreement, then this Agreement shall terminate, and the Escrow
Agent shall promptly disburse the funds on deposit, including interest, to EKAE
to be used in accordance with the provisions set out in the Registration
Statement (as may be amended) which will be used in Offering the Units. EKAE
will deliver a copy of the Registration Statement to the Escrow Agent upon
execution of this Agreement. The Escrow Agent will have no responsibility to
examine the Registration Statement with regard to the Escrow Account or
otherwise. Upon the making of such disbursement, the Escrow Agent shall be
completely discharged and released of any and all further responsibilities
hereunder.

     D.   In the event the Deposited Funds do not equal or exceed the Minimum
Escrow Deposit on or before the Termination Date, the Escrow Agent shall return
to each of the purchasers of the Units in the Offering, as promptly as possible
after such Termination Date and on the basis of its records pertaining to the
Escrow Account: (a) the sum which each purchaser initially paid in on account of
purchases of the Units in the Offering and (b) subject to paragraph 10 hereof,
each purchaser's portion of the total interest earned on the Escrow Account as
of the Termination Date, (c) reduced by a processing fee paid to Escrow Agent of
Twenty Dollars ($20.00) per purchaser. Computation of any purchaser's share of
the net interest earned will be a weighted average based on the proportion of
such purchaser's deposit in the Escrow Account from the Offering to all such
purchasers' deposits held by the Escrow Agent and upon the length of time in
days such deposit was held in the Escrow Account as compared to all such
deposits. All computations with respect to each purchaser's allocable share of
net interest shall be made by the Escrow Agent, which determinations shall be
final and conclusive. Any amount paid or payable to a purchaser pursuant to this
paragraph shall be deemed to be the property of such purchaser, free and clear
of any and all claims of EKAE or its agents or creditors; and the respective
purchases of the Units made and entered into in the Offering shall thereupon be
deemed, ipso facto, to be cancelled without any further liability of the
purchasers or any of them to pay for the Units purchased. At such time as the
Escrow Agent shall have made all the payments called for in this paragraph, the
Escrow Agent shall be completely discharged and released of any and all further
responsibilities hereunder, and the Units reserved (as provided in paragraph 4)
shall be released from such reservation.

     8.   AGREEMENT WITH ESCROW AGENT. To induce Escrow Agent to act hereunder,
it is agreed by EKAE that:

     A.   The sole duty of the Escrow Agent, other than as herein specified,
shall be to receive the Escrow Funds and hold them subject to release, in
accordance herewith, and the Escrow Agent shall be under no duty to determine
whether EKAE is complying with requirements of this Agreement in tendering to
the Escrow Agent said proceeds of the sale of said Units. The Escrow Agent may
conclusively rely upon and shall be protected in acting upon any statement,
certificate, notice, request, consent, order or other document believed by it to
be genuine and to have been signed or presented by the proper party or parties.
The Escrow Agent shall have no duty or liability to verify any such statement,
certificate, notice, request, consent, order or other document, and its sole
responsibility shall be to act only as expressly set forth in this Agreement.
The Escrow Agent shall be under no obligation to institute or defend any action,
suit or proceeding in connection with this Agreement unless first indemnified to
its satisfaction. The Escrow Agent may consult counsel

                                        3
<Page>

in respect of any question arising under this Agreement and the Escrow Agent
shall not be liable for any action taken or omitted in good faith upon advice of
such counsel.

     B.   EKAE hereby indemnifies and holds harmless the Escrow Agent from and
against any and all loss, liability, cost, damage and expense, including,
without limitation, reasonable counsel fees, which the Escrow Agent may suffer
or incur by reason of any action, claim or proceeding brought against the Escrow
Agent arising out of or relating in any way to this Agreement or any transaction
to which this Agreement relates unless such action, claim or proceeding is the
result of the gross negligence or willful misconduct of the Escrow Agent.

     9.   RESIGNATION AND REMOVAL OF ESCROW AGENT SUCCESSORS. The Escrow Agent
may resign upon thirty (30) days advance written notice to EKAE. If a successor
Escrow Agent is not appointed within the 30-day period following such notice,
Escrow Agent may petition any court of competent jurisdiction to name a
successor Escrow Agent. Any commercial banking institution or trust company with
which Escrow Agent may merge or consolidate, and any commercial banking
institution or trust company to which Escrow Agent transfers all or
substantially all of its corporate trust business shall be the successor Escrow
Agent without further act.

     10.  FEES AND EXPENSES OF ESCROW AGENT. In the event the Deposited Funds do
not equal or exceed the Minimum Escrow Deposit before the Termination Date the
Escrow Agent shall be entitled to a fee of Twenty Dollars ($20.00) per
purchaser, which fees shall be paid from interest on the escrow account only and
not from principal. The fee agreed upon in the event of termination of the
escrow without the required Minimum Escrow Deposit and the continued deposit of
said escrow in the Repurchase Agreement as set forth in paragraph 5 herein is
intended as full consideration for the Escrow Agent's services as contemplated
by this Agreement; PROVIDED, HOWEVER, that in the event the Escrow Agent renders
any material service not contemplated in this Agreement or there is any
assignment of interest in the subject matter of this Agreement, or any material
modification hereof; or if any material controversy arises hereunder, or the
Escrow Agent is made a party to any litigation pertaining to this Agreement, or
the subject matter hereof, then the Escrow Agent shall be reasonably compensated
for such extraordinary services and reimbursed for all costs and expenses,
including reasonable attorney's fees, occasioned by any delay, controversy,
litigation or event, and the same shall be recoverable from EKAE, but not from
the escrow account.

     11.  NOTICES. All notices, requests, demands, and other communications
under this Agreement shall be in writing and shall be deemed to have been duly
given (a) on the date of service if served personally on the party to whom
notice is to be given, (b) on the day of transmission if sent by facsimile
transmission to the facsimile number given below, and telephonic confirmation of
receipt is obtained promptly after completion of transmission, (c) on the next
day on which such deliveries are made in Garnett, Kansas, when delivery is to
Federal Express or similar overnight courier or the Express Mail service
maintained by the United States Postal Service, or (d) on the fifth day after
mailing, if mailed to the party to whom notice is to be given, by first class
mail, registered or certified, postage prepaid, and properly addressed, return
receipt requested, to the party as follows:

                                        4
<Page>

          If to Escrow Agent:

               Garnett State Savings Bank
               Attn: Dwight Nelson
               5th and Oak
               Garnett, Kansas 66032
               Fax:  (785) 448-6613

          If to EKAE:

               East Kansas Agri-Energy, L.L.C.
               Attn:  Mr. William R. Pracht, President
               122 W. 5th Street, Garnett, Kansas  66032
               Fax:  (785) 448-2888

          with a required copy to:

               Brown, Winick, Graves, Gross, Baskerville and Schoenebaum, P.L.C.
               Suite 2000, Ruan Center
               666 Grand Avenue
               Des Moines, IA  50309
               Attention:  Bill Hanigan
               Fax:  (515) 283-0231

     12.  GOVERNING LAW. This Agreement shall be construed, performed, and
enforced in accordance with, and governed by, the internal laws of the State of
Kansas, without giving effect to the principles of conflict of laws thereof.

     13.  SUCCESSORS AND ASSIGNS. Except as otherwise provided in this
Agreement, no party hereto shall assign this Agreement or any rights or
obligations hereunder without the prior written consent to the other parties
hereto and any such attempted assignment without such prior written consent
shall be void and of no force and effect. This Agreement shall inure to the
benefit of and shall be binding upon the successors and permitted assigns of the
parties hereto.

     14.  SEVERABILITY. In the event that any part of this Agreement is declared
by any court or other judicial or administrative body to be null, void, or
unenforceable, said provision shall survive to the extent it is not so declared,
and all of the other provisions of this Agreement shall remain in full force and
effect.

     15.  FURTHER ASSURANCES. Each of the parties shall execute such documents
and other papers and take such further actions, as may be reasonably required or
desirable to carry out the provisions hereof and the transactions contemplated
hereby.

     16.  AMENDMENTS. This Agreement may be amended or modified, and any of the
terms, covenants, representations, warranties, or conditions hereof may be
waived, only by a written

                                        5
<Page>

instrument executed by the parties hereto, or in the case of a waiver, by the
party waiving compliance. Any waiver by any party of any condition, or of the
breach of any provision, term, covenant, representation, or warranty contained
in the Agreement, in any one or more instances, shall not be deemed to be nor
construed as further or continuing waiver of any such conditions, or of the
breach of any other provision, term, covenant, representation, or warranty of
this Agreement.

     17.  ENTIRE AGREEMENT. This Agreement contains the entire understanding
among the parties hereto with respect to the escrow contemplated hereby and
supersedes and replaces all prior and contemporaneous agreements and
understandings, oral or written, with regard to such escrow.

     18.  SECTION HEADINGS. The section headings in this Agreement are for
reference purposes only and shall not affect the meaning or interpretation of
this Agreement.

     19.  COUNTERPARTS. This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original but all of which
together shall constitute one and the same instrument.

     IN WITNESS WHEREOF, the parties hereto have hereunto affixed their
signatures as of the day and year first written above.

EKAE:

EAST KANSAS AGRI-ENERGY, L.L.C.

--------------------------------
William R. Pracht, President

ESCROW AGENT:

GARNETT STATE SAVINGS BANK

By:
    -----------------------------------

      Name:
            ---------------------------

      Title:
             --------------------------

                                        6

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