CREDIT AGREEMENT





                                     BETWEEN





                     GS COES (YORKVILLE I), LLC, AS BORROWER





                                       AND





                     YA GLOBAL INVESTMENTS, L.P., AS LENDER

                             As of January 11, 2008












                                                                                                      
SECTION 1.    DEFINITIONS....................................................................................4
   1.1 Definitions...........................................................................................4
   1.2 Accounting Terms......................................................................................9

SECTION 2.   REVOLVING CREDIT FACILITY.......................................................................9
   2.1 Revolving Advances....................................................................................9
   2.2 Interest.............................................................................................11
   2.3 Cash Management; Prepayment; Payments................................................................11
   2.4 Security and Guaranties..............................................................................13
   2.5 Fees.................................................................................................13
   2.6 Extension of Maturity Date; Termination..............................................................13

SECTION 3, CONDITIONS PRECEDENT.............................................................................14
   3.1 Conditions to Closing................................................................................14
   3.2 Conditions to the Funding Date Advances..............................................................15
   3.3 Conditions to all Revolving Advances.................................................................15

SECTION 4. REPRESENTATIONS AND WARRANTIES...................................................................16
   4.1 Organization.........................................................................................16
   4.2 Authorization........................................................................................16
   4.3 No Conflicts.........................................................................................16
   4.4 Compliance and Other Agreements......................................................................16
   4.5 ERISA................................................................................................17
   4.6 Approvals and Consents...............................................................................17
   4.7 Investment Company...................................................................................17
   4.8 Regulation U; Securities Exchange Act of 1934........................................................17
   4.9 Use of Funds.........................................................................................17
   4.10 Financial Statements................................................................................18
   4.11 Taxes...............................................................................................18
   4.12 Title to Properties/Priority of Liens...............................................................18
   4.13 Litigation..........................................................................................18
   4.14 Insurance...........................................................................................18
   4.15 Brokers.............................................................................................18
   4.16 Disclosure..........................................................................................18
   4.17 Bank Accounts.......................................................................................19
   4.18 Subsidiaries; Affiliates; Solvency..................................................................19
   4.19 Environmental Compliance............................................................................19
   4.20 Intellectual Property; License Agreement............................................................19
   4.21 No Event of Default.................................................................................20
   4.22 Names...............................................................................................20

SECTION 5. AFFIRMATIVE COVENANTS............................................................................20
   5.1 Preservation of Existence............................................................................20
   5.2 Maintenance of Properties; Insurance.................................................................20
   5.3 Payment of Taxes.....................................................................................20
   5.4 Field Audit and Examinations.........................................................................20
   5.5 Accounting; Financial Statements and Other Information...............................................21
   5.6 Compliance...........................................................................................22
   5.7 ERISA................................................................................................22
   5.8 Ownership/Control....................................................................................22
   5.9 Change in Business...................................................................................22
   5.10 Notification to Lender..............................................................................23
   5.11 Environmental Compliance............................................................................23
   5.12 Further Assurances..................................................................................23
   5.13 License Agreements..................................................................................23
   5.14 Build Out Draw Schedule.............................................................................24
   5.15 Compliance with Projections.........................................................................24
   5.16 Minimum Production..................................................................................24

SECTION 6. NEGATIVE COVENANTS...............................................................................24
   6.1 Investments and Guaranties...........................................................................24
   6.2 Limitation on Liens..................................................................................25
   6.3 Additional Obligations...............................................................................25
   6.4 Mergers, Etc.........................................................................................25
   6.5 Accounting Changes...................................................................................25
   6.6 Negative Pledges, Etc................................................................................25
   6.7 Recapitalization.....................................................................................25
   6.8 Dividends and Redemptions............................................................................26
   6.9 Transactions with Affiliates.........................................................................26

SECTION 7. EVENTS OF DEFAULT/REMEDIES.......................................................................26
   7.1 Events of Default....................................................................................26
   7.2 Remedies.............................................................................................28

SECTION 8. MISCELLANEOUS....................................................................................28
   8.1 Expenses.............................................................................................28
   8.2 Survival of Agreement................................................................................29
   8.3 No Waiver; Cumulative Remedies.......................................................................29
   8.4 Notices and Deliveries...............................................................................29
   8.5 Amendments and Waivers...............................................................................30
   8.6 Applicable Law.......................................................................................30
   8.7 Successors...........................................................................................30
   8.8 Partial Invalidity...................................................................................30
   8.9 Headings and Word Meanings...........................................................................30
   8.10 WAIVER OF JURY TRIAL................................................................................30
   8.11 JURISDICTION; SERVICE OF PROCESS....................................................................30
   8.12 Indemnity...........................................................................................31
   8.13 Marshalling; Recourse to Security; Payments Set Aside...............................................31
   8.14 Entire Agreement....................................................................................31
   8.15 Set-off.............................................................................................31
   8.16 Waiver of Notices...................................................................................32
   8.17 Counterparts; Facsimile Signature...................................................................32












                                CREDIT AGREEMENT

         CREDIT AGREEMENT dated as of January 11, 2008, between GS COES
(YORKVILLE I), LLC, a New York limited liability company, having an office at
One Penn Plaza, Suite 1612, New York, New York 10119 (the "Borrower"), and YA
GLOBAL INVESTMENTS, L.P., a Cayman Island exempt limited partnership having an
office at 101 Hudson Street, Suite 3700, Jersey City, New Jersey 07303 (the
"Lender").

                                R E C I T A L S:

     The Borrower desires the Lender, and the Lender is willing,  subject to and
upon the  terms  and  conditions  set forth  herein  and in the other  Financing
Agreements  (as  defined  herein),  to  make a  discretionary  revolving  credit
facility  (the  "Revolving   Credit   Facility")   available  to  the  Borrower.
Accordingly, the Borrower and the Lender hereby agree as follows:

         NOW, THEREFORE, IT IS AGREED:

SECTION 1.        DEFINITIONS

1.1  Definitions.  As used in this Agreement, the following terms shall have the
     following meanings, unless the context otherwise requires:

     "Affiliate"  shall mean,  with respect to any specified  Person,  any other
Person  directly or indirectly  controlling  or controlled by or under direct or
indirect  common  control  with,  such  specified  Person.  For purposes of this
definition,   "control"  (including,   with  correlative  meanings,   the  terms
"controlled  by" and "under common  control with") when used with respect to any
specified  Person,  shall mean the power to direct or cause the direction of the
actions, management or policies of such Person, directly or indirectly,  whether
through the ownership of voting securities, by contract or otherwise and whether
or not such power is actually exercised.

     "Agreement"  shall mean this  Credit  Agreement,  as  amended,  modified or
supplemented from time to time in accordance with its terms.

     "Availability" shall mean, as of the date calculated, the result of (a) the
Revolving Loan Ceiling, minus (b) the Collateral Limitation.

     "Blocked Account" shall have the meaning set forth in Section 2.3.1 hereof.

     "Board" shall have the meaning set forth in Section 4.8 hereof.

     "Borrower"  shall  have  the  meaning  set  forth in the  preamble  to this
Agreement.

     "Build Out Draw Schedule"  shall mean that certain  schedule  setting forth
the  timetable  for,  and costs of,  installing  COES  Installations  in various
locations,  to be  provided to the Lender by the  Borrower  prior to the Closing
Date, in a form and of a nature acceptable to the Lender in all respects, as the
same may be  updated,  modified  and amended  from time to time  pursuant to the
mutual agreement, in writing, of the Borrower and the Lender.

     "Business  Day" shall mean any day other than a  Saturday,  Sunday or other
day on which  commercial  banks in New York, New York are authorized or required
to close under the laws of the State of New York.

     "Cash Equivalents" shall mean:

     (i)  demand  deposits  at, or  certificates  of deposit in Dollars  of, any
          Institutional Lender;

     (ii) readily  marketable direct obligations of the United States government
          or any agency thereof which are backed by the full faith and credit of
          the United States;

     (iii) investments  in  money  market  mutual  funds  registered  under  the
          Investment   Company   Act  of  1940   having   assets  in  excess  of
          $2,500,000,000;

     (iv) commercial paper at the time of acquisition  having the highest rating
          obtainable  from  either  Standard  & Poor's  Corporation  or  Moody's
          Investor Service, Inc.; and

     (v)  federally tax exempt securities rated "A" or better by either Standard
          & Poor's Corporation or Moody's Investor Service,  Inc. provided that,
          in each case mentioned in (i), (ii), and (iv) above,  such obligations
          shall  mature  not more  than one  year  from the date of  acquisition
          thereof.

     "Cash  Flow  Projections"  shall  mean the cash  flow  projections  for the
Borrower's  operations  provided to the Lender by the Borrower prior to the date
of this Agreement.

     "Closing Date" shall mean the date of this Agreement.

     "COES  Installations"  shall mean the Corn Oil Extraction Systems installed
by the Borrower in the  following  locations,  together  with any other Corn Oil
Extraction  Systems installed in any other locations which are financed with the
proceeds of the Revolving  Advances:  (i) Utica Energy, LLC, 4995 State Road 91,
Oshkosh,  WI 54904,  (ii) Western New York Energy,  LLC, 40  Lackawanna  Avenue,
Mount Morris, NY 14510, (iii) Global Ethanol, LLC, 11440 Cemetery Road, Riga, MI
49276,  (iv) Global  Ethanol,  LLC, 1660 428th  Street,  Lakota,  IA 50451,  (v)
Central Indiana Ethanol,  LLC, 2955 W. Delphi Pike,  Marion,  IN 46953, and (vi)
Northeast Biofuels, LP, 376 Owen Road, Fulton, NY 13069.

     "COES License Agreement" shall have the meaning set forth in Section 4.20.

     "Collateral"  shall  mean  all of the  property  of the  Borrower  and  the
Guarantors in which the Lender has been, or shall  hereafter be,  granted a lien
or security interest under the Security Agreement,  the Pledge Agreement, the IP
Security Agreement, and/or the Mortgages.

     "Collateral  Access Agreement" shall mean an agreement in writing,  in form
and substance  satisfactory to Lender,  from any lessor of premises to Borrower,
or any other  person to whom any  Collateral  is  consigned  or who has custody,
control  or  possession  of any such  Collateral  or is  otherwise  the owner or
operator of any premises on which any of such Collateral is located, in favor of
Lender with  respect to the  Collateral  at such  premises or  otherwise  in the
custody, control or possession of such lessor, consignee or other person.

     "Collateral  Limitation"  shall  mean the sum of (a) the  aggregate  unpaid
balance of the Loan Account,  plus (b) the aggregate  amount of outstanding loan
or loans owed by  Borrower's  affiliate  NextGen  Fuel to the  Stillwater  Asset
Backed Fund, L.P., which loan balance is currently approximately $3,800,000.00.

     "Communication" shall have the meaning set forth in Section 8.4 hereof.

     "Compliance  Certificate"  shall mean a certificate in a form acceptable to
the Lender in all respects  executed by the president or chief executive officer
of the Borrower  certifying to the Lender that (i) the Borrower is in compliance
with  the  terms  and  conditions  of this  Agreement  and the  other  Financing
Agreements,  (ii) the  installation of the COES  Installations  is proceeding in
accordance  with the Build Out Draw Schedule and Section 5.14 hereof,  (iii) the
Borrower is in  compliance  with the  covenants  set forth in Sections  5.15 and
5.16hereof,  and (iv) no  Default  or  Event  of  Default  has  occurred  and is
continuing.

     "Default" shall mean any condition, act or event that, with notice or lapse
of time or both, would constitute an Event of Default.

     "Deposit Account Control Agreement" shall mean an agreement in writing,  in
form and substance satisfactory to Lender, by and among Lender, Borrower and any
bank at which any deposit  account of Borrower is at any time  maintained  which
provides  that such bank will  comply  with  instructions  originated  by Lender
directing  disposition  of the  funds in the  deposit  account  without  further
consent  by  Borrower  and has such  other  terms and  conditions  as Lender may
require.

     "Dollars"  or the symbol "$" shall mean  dollars in lawful  currency of the
United States of America.

     "Environmental Laws" shall mean all foreign,  Federal, State and local laws
(including common law), legislation,  rules, codes, licenses, permits (including
any conditions  imposed  therein),  authorizations,  judicial or  administrative
decisions,  injunctions  or  agreements  between  Borrower and any  Governmental
Authority,  i)  relating  to  pollution  and  the  protection,  preservation  or
restoration  of the  environment  (including  air,  water vapor,  surface water,
ground water,  drinking water,  drinking water supply,  surface land, subsurface
land, plant and animal life or any other natural  resource),  or to human health
or safety,  ii)  relating to the exposure  to, or the use,  storage,  recycling,
treatment, generation, manufacture,  processing,  distribution,  transportation,
handling, labeling,  production,  release or disposal, or threatened release, of
Hazardous Materials,  or iii) relating to all laws with regard to recordkeeping,
notification,   disclosure  and  reporting  requirements   respecting  Hazardous
Materials.  The term "Environmental Laws" includes (i) the Federal Comprehensive
Environmental  Response,  Compensation  and Liability  Act of 1980,  the Federal
Superfund  Amendments  and  Reauthorization  Act,  the Federal  Water  Pollution
Control Act of 1972, the Federal Clean Water Act, the Federal Clean Air Act, the
Federal Resource  Conservation and Recovery Act of 1976 (including the Hazardous
and Solid Waste  Amendments  thereto),  the Federal Solid Waste Disposal and the
Federal Toxic  Substances  Control Act, the Federal  Insecticide,  Fungicide and
Rodenticide  Act,  and  the  Federal  Safe  Drinking  Water  Act of  1974,  (ii)
applicable  state  counterparts  to such  laws,  and  (iii)  any  common  law or
equitable  doctrine  that may impose  liability or  obligations  for injuries or
damages due to, or threatened as a result of, the presence of or exposure to any
Hazardous Materials.

     "ERISA" shall mean the Employee  Retirement Income Security Act of 1974, as
amended from time to time,  and the  regulations  and published  interpretations
thereof.

     "ERISA Affiliate" shall mean an entity, whether or not incorporated,  which
is under common  control with the Borrower  within the meaning of Section 414(b)
or 414(c) of the Internal Revenue Code of 1986, as amended.

     "Event of Default" shall have the meaning  assigned to such term in Section
7 hereof.

     "Exchange Act" shall have the meaning  assigned to such term in Section 4.8
hereof.


     "Financing  Agreements" shall mean the following agreements and instruments
(as such  agreements  and  instruments  may be  hereafter  amended,  modified or
supplemented in accordance  with their  respective  terms):  (i) this Agreement,
(ii) the  Security  Agreement,  (iii)  the  Revolving  Note,  (iv) the  Guaranty
Agreement, (v) the Pledge Agreement,  (vi) the Mortgages,  (vii) the IP Security
Agreement,  and  (viii) any other  supplementary  security  agreements  or other
collateral  documents or other related agreements now or hereafter  delivered to
the Lender by the Borrower.

     "Funding Date" shall have the meaning set forth in Section 2.1 hereof.

     "Funding Date  Advances"  shall have the meaning set forth in Section 2.1.1
hereof.

     GAAP" shall mean principles that are (i) consistent with those  promulgated
or adopted by the Financial  Accounting Standards Board and its predecessors (or
successors)  in effect and  applicable to that  accounting  period in respect of
which reference to GAAP is being made, and (ii)  consistently  applied with past
financial statements of the Borrower.

     "Governmental  Authority"  shall mean any nation or government,  any state,
province,  or other political  subdivision thereof, any central bank (or similar
monetary or regulatory  authority) thereof, and any entity exercising executive,
legislative,  judicial,  regulatory or administrative functions of or pertaining
to government.

     "GreenShift" shall mean GreenShift Corporation, a Delaware corporation.

     "GS AgriFuels" shall mean GS AgriFuels Corporation a Delaware corporation.

     "GS CleanTech" shall mean GS CleanTech Corporation, a Delaware corporation.

     "GS Energy" shall mean GS Energy Corporation, a Delaware corporation.

     "GS  Ethanol"  shall  mean  GS  Ethanol  Technologies,   Inc.,  a  Delaware
corporation.

     "Guaranty  Agreement"  shall have the  meaning  set forth in Section  2.4.1
hereof.

     "Guarantors" shall mean each of GreenShift,  GS AgriFuels, GS CleanTech, GS
Energy, GS Ethanol,  Viridis Capital, LLC, NexGen Fuel, Kevin Kreisler, and each
of their respective subsidiaries and Affiliates.

     "Hazardous  Materials"  shall  mean  any  hazardous,   toxic  or  dangerous
substances,  materials and wastes,  including hydrocarbons  (including naturally
occurring  or  man-made  petroleum  and  hydrocarbons),   flammable  explosives,
asbestos,  urea  formaldehyde  insulation,   radioactive  materials,  biological
substances, polychlorinated biphenyls, pesticides, herbicides and any other kind
and/or type of pollutants or  contaminants  (including  materials  which include
hazardous  constituents),  sewage, sludge,  industrial slag, solvents and/or any
other  similar  substances,   materials,  or  wastes  and  including  any  other
substances,  materials  or  wastes  that  are  or  become  regulated  under  any
Environmental  Law (including any that are or become  classified as hazardous or
toxic under any Environmental Law).

     "Indebtedness"  shall mean, with respect to any specified  Person,  (i) all
obligations  of such Person for  borrowed  money or with  respect to deposits or
advances of any kind,  (ii) all  obligations of such Person  evidenced by bonds,
debentures,  notes or other similar  instruments,  (iii) all obligations of such
Person for the deferred  purchase price of property or services,  except current
accounts  payable  arising in the  ordinary  course of  business  and payable in
accordance with customary trade  practices,  (iv) all obligations of such Person
under conditional sale or other title retention  agreements relating to property
purchased  by such  Person,  (v) all  payment  obligations  of such  Person with
respect to interest rate or currency protection agreements, (vi) all obligations
of such  Person as an account  party under any letter of credit or in respect of
bankers'  acceptances,  (vii) all  obligations  of any third  party  secured  by
property or assets of such Person  (regardless  of whether or not such Person is
liable for repayment of such  obligations),  and (viii) all  guarantees or other
contingent liability of such Person.

     "Institutional  Lender"  shall  mean any  savings  bank,  savings  and loan
association, commercial bank or trust company, insurance company, or any holding
or service  company of any of the foregoing,  in each case having capital of not
less than $400,000,000 and authorized to do business in the United States.

     "Intellectual  Property"  shall  mean  all  of  Borrower's  now  owned  and
hereafter  arising or acquired:  patents,  patent rights,  patent  applications,
copyrights,  works  which  are  the  subject  matter  of  copyrights,  copyright
applications,  copyright registrations,  trademarks,  servicemarks, trade names,
trade styles,  trademark and service mark applications,  and licenses and rights
to use any of the foregoing and all  applications,  registrations and recordings
relating to any of the foregoing as may be filed in the United States  Copyright
Office,  the United States Patent and Trademark  Office or in any similar office
or agency of the United  States,  any State thereof,  any political  subdivision
thereof or in any other  country or  jurisdiction,  together with all rights and
privileges arising under applicable law with respect to Borrower's use of any of
the foregoing; all extensions, renewals, reissues, divisions, continuations, and
continuations-in-part  of any of the  foregoing;  all  rights  to sue for  past,
present  and future  infringement  of any of the  foregoing;  inventions,  trade
secrets, formulae, processes, compounds, drawings, designs, blueprints, surveys,
reports,  manuals,  and operating  standards;  goodwill  (including any goodwill
associated  with any trademark or servicemark or the license of any trademark or
servicemark); customer and other lists in whatever form maintained; trade secret
rights, copyright rights, rights in works of authorship, domain names and domain
name  registration;  software and contract rights relating to computer  software
programs, in whatever form created or maintained.

     "IP Security  Agreement"  shall have the meaning set forth in Section 2.4.2
hereof.

     "Kerns Judgment" shall mean that certain judgment entered in favor of Kerns
Manufacturing Corp. in the amount of $1,020,265 against GS CleanTech.

     "Lender"  shall  have  the  meaning  set  forth  in the  preamble  to  this
Agreement.

     "Lien"  shall mean,  with  respect to any asset,  (i) any  mortgage,  lien,
pledge,  encumbrance,  charge or security interest in or on such asset, (ii) the
interest of a vendor or a lessor under any conditional  sale agreement,  capital
lease or other title retention  agreement  relating to such asset,  (iii) in the
case of securities,  any purchase option, call or similar right of a third party
with respect to such securities,  or (iv) any other right of or arrangement with
any creditor to have such creditor's claim satisfied out of such assets,  or the
proceeds therefrom, prior to the general creditors of the owner thereof.

     "Loan Account" shall have the meaning set forth in Section 2.1.2 hereof.

     "Maturity  Date" shall mean August 31, 2009,  unless extended in accordance
with the terms of  Section  2.6 of this  Agreement,  in which case it shall mean
August 31, 2010.

     "Mortgages" shall have the meaning set forth in Section 2.4.2 hereof.

     "Multiemployer  Plan" shall mean a Plan described in Section  4001(a)(3) of
ERISA.

     "NextGen Fuel" shall mean NextGen Fuel, Inc., a Delaware corporation.

     "Obligations"  shall mean all obligations,  liabilities and indebtedness of
the Borrower to the Lender, whether now existing or hereafter created, direct or
indirect,  due or not,  whether  created  directly or acquired by  assignment or
otherwise,  including,  without  limitation,  all  obligations,  liabilities and
indebtedness of the Borrower with respect to the Revolving Credit Facility,  and
the  payment  and  performance  of  all  other  obligations,   liabilities,  and
indebtedness  of the Borrower to the Lender  hereunder,  and/or under any one or
more of the other Financing Agreements, including, without limitation, all fees,
costs, expenses and indemnity obligations hereunder or thereunder.

     "Operating    Account"   shall   mean   the   Borrower's   account   number
________________ maintained with Bank of America, N.A.

     "PBGC" shall mean the Pension Benefit Guaranty  Corporation,  or any entity
succeeding to any or all of its functions under ERISA.

     "Person"  shall  mean an  individual,  partnership,  joint  venture,  firm,
corporation,  limited liability company,  trust, charitable institution or other
business or legal entity.

     "Plan"  shall mean any pension plan that is covered by Title IV of ERISA or
employee  benefit  plan (as defined in Section  3(3) of ERISA) and in respect of
which the Borrower or any ERISA Affiliate is an "employer" as defined in Section
3(5) of ERISA.

     "Pledge  Agreement"  shall  have the  meaning  set forth in  Section  2.4.2
hereof.

     "Prohibited  Transaction"  shall mean any  transaction set forth in Section
406 of ERISA or Section  4975 of the Internal  Revenue Code of 1986,  as amended
from time to time.

     "Regulation  U" shall mean  Regulation  U of the Board of  Governors of the
Federal Reserve System as amended or supplemented from time to time.

     "Regulation  X" shall mean  Regulation  X of the Board of  Governors of the
Federal Reserve System as amended or supplemented from time to time.

     "Reportable  Event"  shall mean any of the events set forth in Section 4043
of ERISA.

     "Revolving Advance" shall have the meaning set forth in Section 2.1 hereof.

     "Revolving  Credit  Facility"  shall have the meaning set forth in Recitals
section hereof.

     "Revolving Loan Ceiling" shall mean $10,000,000.

     "Revolving Note" means the Borrower's revolving promissory note, payable to
the order of the Lender in substantially the form of Exhibit A hereto.

     "Security  Agreement"  shall have the  meaning  set forth in Section  2.4.2
hereof.

     "Shares" shall have the meaning set forth in Section 2.5.3 hereof.

     "Solvent" shall mean, at any time, that the Borrower (i) is able to pay its
debts as they  mature  and has (and has a  reasonable  basis to  believe it will
continue to have)  sufficient  capital (and not  unreasonably  small capital) to
carry on its business  consistent with its practices as of the date hereof,  and
(ii)  the  assets  and  properties  of the  Borrower  at a fair  valuation  (and
including  as  assets  for  this  purpose  at a fair  valuation  all  rights  of
subrogation,  contribution or indemnification arising pursuant to any guarantees
given by the Borrower) are greater than the  Indebtedness  of the Borrower,  and
including  subordinated and contingent liabilities computed at the amount which,
the Borrower has a reasonable  basis to believe,  represents an amount which can
reasonably be expected to become an actual or matured  liability  (and including
as to contingent  liabilities  arising pursuant to any guarantee the face amount
of such liability as reduced to reflect the probability of it becoming a matured
liability).

     "Subsidiary" shall mean a corporation, partnership or other entity of which
shares of stock or other ownership interests having ordinary voting power (other
than  stock or such  other  ownership  having  such  power only by reason of the
happening  of a  contingency)  to elect a majority of the board of  directors or
other managers of such corporation,  partnership or other entity are at the time
owned,  or  the  management  of  which  is  otherwise  controlled,  directly  or
indirectly, through one or more intermediaries, or both, by the Borrower.

     "Termination  Date"  shall mean the  earlier  to occur of (i) the  Maturity
Date, (ii) such date as Revolving Advances shall otherwise be payable in full in
accordance  with the  provisions of Section 7 of this  Agreement,  and (iii) the
termination of this Agreement pursuant to Section 2.6 hereof.

     "Utica System" shall have the meaning set forth in Section 4.20 hereof.

1.2  Accounting  Terms. Any accounting terms used in this Agreement that are not
     specifically  defined herein shall have the meanings  customarily  given to
     such terms in accordance with GAAP. In the event that changes in GAAP shall
     be mandated by the Financing  Accounting  Standards Board, and such changes
     would materially modify the  interpretation or computation of the financial
     covenants contained in this Agreement at the time of execution hereof, then
     in such  event  such  changes  shall not be  followed  in  calculating  the
     financial covenants.

SECTION 2.        REVOLVING CREDIT FACILITY

2.1 Revolving Advances. The Lender may, in its sole discretion, make advances to
the Borrower from time to time from the date all of the conditions set forth in
Sections 3.1, 3.2, and 3.3 are satisfied (the "Funding Date") to the Termination
Date, on the terms and subject to the conditions herein set forth (the
"Revolving Advances"). The Lender shall not consider any request for a Revolving
Advance to the extent the amount of the requested Revolving Advance exceeds
Availability. The Borrower's obligation to pay the Revolving Advances shall be
evidenced by the Revolving Note and shall be secured by the Collateral. Within
the limits set forth in this Section II, the Borrower may request Revolving
Advances, repay pursuant to Section II hereof and request additional Revolving
Advances.

2.1.1 Procedures for  Requesting  Revolving  Advances.  On the Funding Date, the
     Lender  shall make the  following  Revolving  Advances  (collectively,  the
     "Funding Date Advances"): (a) an initial Revolving Advance of $4,000,000 to
     the Borrower,  (b) a Revolving Advance of $250,000 to the Lender to pre-pay
     estimated  interest coming due under the Revolving  Credit Facility for the
     first  three (3) months of the  Revolving  Credit  Facility  (the  "Prepaid
     Interest  Advance"),  (c) a Revolving  Advance of $210,000 to the Lender to
     pay the fees due to the Lender under Sections  2.5.1 and 2.5.2 hereof,  and
     (d) a Revolving  Advance of $150,000.00 to the Lender's  counsel to pay for
     the estimated costs and expenses  incurred by the Lender in connection with
     the  negotiation  and preparation of this Agreement and the other Financing
     Agreements.  Thereafter, the Lender may, in its discretion, make additional
     Revolving  Advances  from  time  to time at the  request  of the  Borrower,
     provided that (i) such Revolving  Advances shall be made no more frequently
     than  once per  month  and no later  than the  fifth  Business  Day of each
     calendar month, (ii) such request is made in writing at least ten (10) days
     prior to the date on which such Revolving  Advance is to be funded,  and is
     accompanied by an executed Compliance Certificate, (iii) such request shall
     be for  Revolving  Advances  to pay for  costs  and  expenses  incurred  in
     connection with the  installation of the COES  Installations  in accordance
     with the Build Out Draw Schedule, and (iv) all borrowings after the Funding
     Date  Advances  shall be in multiples  of $100,000.  There shall not be any
     recourse  to,  nor  liability  of,  the  Lender  on  account  of any of the
     following:  (x) any delay in the Lender's  making of, and/or any decline by
     the Lender to make, any Revolving Advance, (y) any delay in the proceeds of
     any such Revolving Advance constituting  collected funds, and (z) any delay
     in the  receipt,  and/or any loss,  of funds which  constitute  a Revolving
     Advance, the wire transfer of which was properly initiated by the Lender in
     accordance with wire instructions provided to the Lender by the Borrower.


     The  Lender  may rely on any  request  for a  Revolving  Advance  which the
Lender,  in good faith believes to have been made by a person duly authorized to
act on  behalf  of the  Borrower  and may  decline  to make any  such  requested
Revolving  Advance pending the Lender's being furnished with such  documentation
concerning that person's authority to act as may be satisfactory to the Lender.

2.1.2 Loan Account.

     (a)  An account  (the "Loan  Account")  shall be opened on the books of the
          Lender,  in which Loan  Account a record may be kept of all  Revolving
          Advances made by the Lender to the Borrower  under or pursuant to this
          Agreement and of all payments thereon.

     (b)  The  Lender  may also keep a record  (either  in the Loan  Account  or
          elsewhere, as the Lender may from time to time elect) of all interest,
          fees,  service  charges,  costs,  expenses,  and other debits owed the
          Lender on account of the  Obligations  and of all credits against such
          amounts so owed.

     (c)  All credits  against the Obligations  shall be conditional  upon final
          payment to the Lender of the items  giving rise to such  credits.  The
          amount of any item credited  against the Obligations  which is charged
          back  against  the Lender for any reason or is not so paid shall be an
          Obligation and shall be added to the Loan Account,  whether or not the
          item so charged back or not so paid is returned.

     (d)  Except as otherwise provided herein, all fees, service charges, costs,
          and expenses for which the Borrower is obligated hereunder are payable
          on demand. In the  determination of Availability,  the Lender may deem
          fees, service charges,  accrued interest, and other payments as having
          been advanced under the Revolving  Credit Facility whether or not such
          amounts are then due and payable.

     (e)  The Lender, without the request of the Borrower, may advance under the
          Revolving Credit Facility any interest,  fee, service charge, or other
          payment to which the Lender is  entitled  from the  Borrower  pursuant
          hereto  and may charge  the same to the Loan  Account  notwithstanding
          that such  amount so  advanced  may  result  in  Availability's  being
          exceeded. Such action on the part of the Lender shall not constitute a
          waiver of the Lender's  rights under  Section 2.1. Any amount which is
          added to the principal balance of the Loan Account as provided in this
          Subsection  shall bear interest at the interest rate  applicable  from
          time  to  time  to the  unpaid  principal  balance  of  the  Revolving
          Advances.

     (f)  Any  written  statement   rendered  by  the  Lender  to  the  Borrower
          concerning the Obligations shall be considered correct and accepted by
          the  Borrower  and shall be  conclusively  binding  upon the  Borrower
          unless the Borrower provides the Lender with written objection thereto
          within  twenty  (20) days from the  mailing of such  statement,  which
          written objection shall indicate,  with particularity,  the reason for
          such  objection.  The Loan Account and the Lender's  books and records
          concerning   the  loan   arrangement   contemplated   herein  and  the
          Obligations  shall be prima  facie  evidence  and  proof of the  items
          described therein.

2.2  Interest. The Revolving Advances shall bear interest as follows:


2.2.1 Interest Rate. The outstanding  principal amount of the Revolving Advances
     shall bear interest at a rate of twenty percent (20%) per annum.  The first
     three months of interest  payments due under the Revolving  Credit Facility
     shall have been  prepaid to the Lender  pursuant  to the  Prepaid  Interest
     Advance.  Thereafter,  the  Borrower  shall  pay  accrued  interest  on the
     outstanding  principal  amount of the  Revolving  Advances at the foregoing
     rate  monthly in arrears  on the first day of each month  beginning  on the
     first day of the fourth month  immediately  following the Funding Date, and
     at the Termination  Date (whether by  acceleration or otherwise).  Interest
     shall be computed on the basis of a 360-day year over the actual  number of
     days elapsed.

2.2.2 Interest  Upon  Event of  Default.  Upon the  occurrence  and  during  the
     continuance  of an  Event  of  Default  (and  whether  or  not  the  Lender
     accelerates  payment or exercises  any of Lender's  other rights on account
     thereof), interest shall accrue, at the option of the Lender, on the unpaid
     Obligations at a rate per annum equal to four (4%) percent in excess of the
     rate otherwise applicable to such Obligations, but in no event in excess of
     the maximum rate  permitted by  applicable  law.  Interest  accruing at the
     foregoing rate shall be due and payable upon demand by the Lender.

2.2.3 Maximum Rate.  Notwithstanding  anything  otherwise in this Section 2.2 or
     Section 2.3.2 to the contrary, the rate of interest payable by the Borrower
     shall not exceed the maximum rate permitted by applicable law. In the event
     the interest paid by the Borrower  shall exceed the maximum lawful rate, at
     the  Lender's  option,  the excess  shall be applied  in  reduction  of the
     principal balance of the Revolving Advances, or repaid to the Borrower.

2.3  Cash Management; Prepayment; Payments.

2.3.1 Cash  Management.

     (a)  Borrower shall establish and maintain,  at its expense,  a lockbox and
          related  blocked  account  (the  "Blocked  Account"),  as  Lender  may
          specify,  with bank which is acceptable to Lender into which  Borrower
          shall  promptly  deposit  and direct its  account  debtors to directly
          remit,  on a daily basis,  all payments and receipts in the  identical
          form in which such payments and receipts are made or received, whether
          by cash, check or other manner. Borrower shall deliver, or cause to be
          delivered  to  Lender,  a  Deposit  Account  Control   Agreement  duly
          authorized,  executed  and  delivered  by such bank where the  Blocked
          Account is  maintained  and  Borrower  shall  execute and deliver such
          other  agreements  or  documents  as Lender may require in  connection
          therewith.  In addition,  Borrower  shall take the necessary  steps to
          allow Lender "read only" online access to the Blocked  Account so that
          Lender may electronically  monitor the Blocked Account at any time and
          from time to time in its discretion.


     (b)  Borrower and its  employees  and agents  shall,  acting as trustee for
          Lender, receive, as the property of Lender, any monies, checks, notes,
          drafts or any other payment  relating to and/or proceeds of Collateral
          which  come  into  their   possession   or  under  their  control  and
          immediately upon receipt  thereof,  shall deposit or cause the same to
          be  deposited in the Blocked  Account,  or remit the same or cause the
          same to be remitted, in kind, to Lender. In no event shall the same be
          commingled  with  Borrower's own funds.  Borrower  agrees to reimburse
          Lender on  demand  for any  amounts  owed or paid to any bank or other
          financial  institution at which a Blocked Account or any other deposit
          account  or  investment  account  is  established  or any other  bank,
          financial  institution  or other  person  involved in the  transfer of
          funds to or from the Blocked Account arising out of Lender's  payments
          to or  indemnification  of such bank,  financial  institution or other
          person.  The  obligation  of  Borrower  to  reimburse  Lender for such
          amounts  pursuant to this Section  shall  survive the  termination  or
          non-renewal of this Agreement.


     (c)  All amounts  deposited in the Blocked Account shall be swept daily and
          remitted as follows:  (i) from and after the occurrence of an Event of
          Default,  100% of such receipts  shall be remitted to the Lender to be
          applied in reduction of the Obligations in a manner  determined by the
          Lender  in its  sole  and  exclusive  discretion,  or,  if no Event of
          Default has occurred and is  continuing,  then as follows (x) prior to
          July  1,  2008,  100%  of  such  receipts  shall  be  remitted  to the
          Borrower's Operating Account, and (y) from and after July 1, 2008, the
          receipts shall be distributed as set forth in Section 2.3.3(c) below.

2.3.2 Prepayment.  The Borrower  may prepay all or any portion of the  principal
     balance of the  Revolving  Advances  from time to time  without  penalty or
     premium, provided, however, that in all events and circumstances the Lender
     shall be entitled to a minimum  interest payment under the Revolving Credit
     Facility equal to the amount of the Prepaid Interest Advance, and therefore
     shall retain the funds paid to the Lender pursuant to the Prepaid  Interest
     Advance  even if the  Borrower  repays all of the  outstanding  Obligations
     under the  Revolving  Credit  Facility  on or before the 90th day after the
     Funding Date.

2.3.3 Repayment of  Obligations.  The Borrower  shall repay the  Obligations  as
     follows:

     (a)  The Borrower,  without notice or demand from the Lender, shall pay the
          Lender that amount,  from time to time, which is necessary so that the
          aggregate outstanding principal balance of the Revolving Advances does
          not exceed Availability.

     (b)  Accrued interest shall be paid as set forth in Section 2.2, above.

     (c)  From and after  July 1,  2008,  on a daily  basis an  amount  equal to
          1/30th of the  Borrower's  estimated  EBITDA (as set forth in the Cash
          Flow  Projections)  for the then current month (the "Estimated  EBITDA
          Payments")  shall be deducted from the Borrower's  receipts  deposited
          into the Blocked  Account and  remitted to the Lender to be applied in
          reduction of the Obligations,  with the balance of such receipts being
          remitted to the Borrower's Operating Account. On the fifth day of each
          month,  the  Borrower  shall  provide  the  Lender  with a  "true  up"
          calculation of the Borrower's actual EBITDA for the prior month versus
          the Estimated  EBITDA Payments made during the prior month pursuant to
          the foregoing  sentence.  If the "true up" calculation  indicates that
          the aggregate Estimated EBITDA Payments made by the Borrower were less
          than 30% of its actual  EBITDA for the prior month,  then the Borrower
          shall  promptly  pay the  difference  to the Lender.  If the "true up"
          calculation  indicates that the aggregate  Estimated  EBITDA  Payments
          made by the Borrower  were more than 30% of its actual  EBITDA for the
          prior month to the Lender,  and the aggregate of such Estimated EBITDA
          Payments exceed the minimum  $100,000.00  monthly payment set forth in
          Section 2.3.3(d) hereof, then the Estimated EBITDA Payments to be made
          for the then current month shall be reduced by an  appropriate  amount
          until such excess payment is returned to the Borrower. Unless an Event
          of Default  has  occurred,  such  amounts  shall be  applied  first in
          reduction of the  principal  balance of the  Obligations,  and then in
          reduction  accrued  interest,  fees, and expenses.  From and after the
          occurrence  of a  Default  or an Event  of  Default,  at the  Lender's
          option,  100% of such  receipts  shall be applied in  reduction of the
          Obligations  in a  manner  determined  by the  Lender  in its sole and
          exclusive  discretion.  Any payments  received by the Lender hereunder
          will not be deemed applied in reduction of the Obligations  unless and
          until such payments have been received in good and collected funds. In
          the  event  that  at any  time  or from  time  to  time  there  are no
          Obligations  outstanding,  100% of such receipts  shall be remitted to
          the Borrower's Operating Account.

     (d)  Commencing  on July 1, 2008,  and  continuing on the first day of each
          month thereafter,  the Borrower shall make monthly principal  payments
          to the  Lender  in an  amount  (if a  positive  number)  equal  to the
          difference  between (i)  $100,000,  and (ii) the  amounts  paid to the
          Lender pursuant to Section 2.3.3(c) hereof.

     (e)  The Borrower shall repay all Obligations on the Termination Date.

2.3.4 Manner of Payment.  Except as otherwise  expressly set forth  herein,  all
     payments  required  to be made by the  Borrower  hereunder  on  account  of
     principal, interest, or fees shall be made by wire transfer, in Dollars, in
     immediately  available  funds as set forth  herein.  Whenever  any  payment
     hereunder,  or under any of the Financing Agreements,  becomes due on a day
     on  which  the  Lender  is  closed  (as  required  or  permitted  by law or
     otherwise),  such payment shall be made not later than the next  succeeding
     Business  Day,  and  such  extension  of  time  shall  be  included  in the
     computation of interest.  The Borrower  authorizes  (but shall not require)
     the Lender to debit any account  maintained  by the Borrower on any date on
     which  a  payment  is due to  the  Lender  hereunder  or  under  any of the
     Financing  Agreements,  in an amount  equal to any  unpaid  portion of such
     payment.

2.4  Security and Guaranties.

2.4.1 Guaranties. As a condition precedent to the making of the Revolving Credit
     Facility  available  to  the  Borrower  hereunder,   each  Guarantor  shall
     guarantee  the  Obligations  of the  Borrower  to the Lender  pursuant to a
     certain Global  Guaranty  Agreement of even date herewith  executed by each
     such Guarantor (the "Guaranty Agreement").

2.4.2 Security.  To secure  repayment  of all  amounts  due under the  Revolving
     Credit Facility,  and all of the other  Obligations,  the Borrower and each
     Guarantor shall grant valid and perfected  security interests to the Lender
     in the Collateral  pursuant to a certain Global Security  Agreement of even
     date herewith (the  "Security  Agreement")  and pledge to the Lender all of
     their shares, membership interests, and/or other ownership interests in all
     of their  respective  subsidiaries  and  affiliates  pursuant  to a certain
     Global Pledge Agreement of even date herewith (the "Pledge Agreement"), and
     grant valid and perfected  security  interests to the Lender in the portion
     of the Collateral consisting of Intellectual Property pursuant to a certain
     Intellectual  Property  Security  Agreement of even date  herewith (the "IP
     Security Agreement") and grant mortgages (the "Mortgages") to the Lender on
     any real property owned by the Borrower and/or each Guarantor.

2.5  Fees.

2.5.1 Monitoring  Fee. On the Funding Date,  the Borrower shall pay the Lender a
     monitoring  fee of  $175,000,  which  fee  shall be fully  earned as of the
     Funding Date, and used to compensate the Lender for monitoring and managing
     the Revolving Credit Facility.

2.5.2 Structuring and Due Diligence Fee. The Borrower shall pay the Lender a fee
     in the amount of $35,000,  to reimburse the Lender for the costs,  fees and
     expenses  incurred  by the  Lender  in  conducting  its due  diligence  and
     structuring  this  transaction.  Such fee shall be fully earned and paid to
     the Lender on or before the Funding Date  regardless  of whether or not the
     transactions contemplated hereby are consummated.  The fee shall be paid by
     a Revolving  Advance  under the  Revolving  Credit  Facility on the Funding
     Date. The Borrower acknowledges and agrees that this fee is in addition to,
     and shall not be applied against,  the legal fees and expenses  incurred by
     the  Lender in  connection  with the  negotiation  and  preparation  of the
     Financing Agreements.

2.5.3 Grant of Shares.  GS CleanTech,  the parent of the  Borrower,  shall grant
     6,000,000  shares of the common stock of GS CleanTech (the "Shares") to the
     Lender on or before the Closing Date as  additional  consideration  for the
     Lender to make the  Revolving  Credit  Facility  available to the Borrower,
     which shares shall be validly issued, fully paid and nonassessable.

2.5.4 Unused  Line Fee.  An Unused  Line Fee shall be payable on the last day of
     each month,  at the rate of one-half of one percent  (0.50%) per annum,  on
     the average daily Availability during such month.

2.5.5 Override.  The Lender shall receive an override fee of $0.10 per gallon of
     corn oil extracted by Borrower from the COES Installations, which fee shall
     be payable monthly,  on the first day of each month, until the later of (i)
     the  Termination  Date, or (ii) the date upon which the Lender has received
     such fee on a total of twenty million (20,000,000) gallons of corn oil.

2.6  Extension of Maturity Date; Termination. The Maturity Date of the Revolving
     Credit Facility may be extended for twelve (12) months at the discretion of
     the Lender,  provided  that (i) no Default or Event of Default has occurred
     and is continuing,  and (ii) the Borrower provides the Lender with at least
     thirty (30) days prior written notice of its request to extend the Maturity
     Date.  This  Agreement  may be  terminated by the Borrower at any time upon
     thirty  (30) days prior  written  notice to the  Lender,  provided  that no
     termination of this  Agreement  shall  relieve,  release,  or discharge the
     Borrower  or  Guarantors  of  their  respective  duties,  obligations,  and
     covenants  under this Agreement and the other Financing  Agreements,  or to
     terminate  any Liens or security  interests  granted to the  Lender,  or to
     otherwise  release any Collateral,  unless and until all  Obligations  have
     been fully and finally  discharged and paid (in good and collected  funds).
     Notwithstanding the foregoing, all representations,  warranties, covenants,
     indemnifications,  and agreements  which by their express terms survive the
     termination of this Agreement and/or the Financing  Agreements shall not be
     affected by such termination and shall remain in full force and effect.

SECTION 3.        CONDITIONS PRECEDENT

3.1  Conditions to Closing.  The obligation of the Lender to execute and deliver
     this Agreement is subject to the conditions precedent that:

3.1.1 Evidence of Corporate Action;  Certificate and Agreement. The Lender shall
     have  received  (i) copies of all  action  taken by the  Borrower  and each
     Guarantor to authorize  the  execution,  delivery and  performance  of this
     Agreement and the other Financing Agreements; (ii) a copy of the Borrower's
     and each  Guarantor's  respective  Articles  of  Incorporation  (or similar
     charter documentation), as amended to date; (iii) a copy of the By-Laws (or
     similar  documentation)  of the Borrower and each Guarantor,  as amended to
     date,  and  (iv) an  incumbency  certificate  from  the  Borrower  and each
     Guarantor.  All of the  documents  listed in  subsections  (i) through (iv)
     shall be in a form and substance  acceptable to the Lender and certified by
     the Secretary of the Borrower and each Guarantor in a certificate  dated as
     of even date herewith.

3.1.2 Delivery  of  Definitive  Documentation.  This  Agreement  and  the  other
     Financing  Agreements  shall have been duly  executed and  delivered to the
     Lender in a form and substance satisfactory to the Lender and its counsel.

3.1.3 Completion of Due Diligence.  Satisfactory completion by the Lender of its
     due diligence.

3.1.4 Legal  Opinions.  Legal  opinions  of counsel to the  Borrower  reasonably
     satisfactory  in form  and  substance  to the  Lender,  including,  without
     limitation,  with respect to the enforceability and perfection of the Liens
     granted in the Collateral.

3.1.5 Solvency  Certificate.  The Lender shall have received a certificate  from
     the chief financial  officer of the Borrower  certifying that the Borrower,
     after giving effect to the transactions contemplated hereby, is Solvent.

3.1.6 COES  License.  The COES  License  Agreement  shall be in full  force  and
     effect, in a form and of a substance  acceptable to the Lender, and a fully
     executed copy of the same delivered to the Lender.

3.1.7 Build Out Draw Schedule;  Cash Flow  Projections.  The Borrower shall have
     provided  the  Lender  with the  Build  Out  Draw  Schedule  and Cash  Flow
     Projections, both in a form and of a substance acceptable to the Lender.

3.1.8 Litigation;  Investigations.  Except as set forth on Schedule 4.13 hereto,
     there shall not be any action,  suit,  investigation or proceeding  pending
     or, to the knowledge of the Borrower  threatened in any court or before any
     arbitrator or Governmental  Authority that could  reasonably be expected to
     have a material adverse effect.

3.1.9 Consents  and  Approvals.  All  necessary  consents  and  approvals to the
     Financing Agreements shall have been obtained.

3.1.10 Material  Adverse  Change.  No material  adverse  change in the condition
     (financial or otherwise),  operations,  assets,  income and/or prospects of
     the Borrower or  Guarantors  other than what has already been  disclosed to
     Lender in  writing  shall  have  occurred  since the date of the  financial
     statements delivered to the Lender pursuant to Section 4.10 hereof.

3.1.11 Fees; Costs; Expenses. All fees, costs, and expenses (including,  without
     limitation, legal fees and expenses) to be paid or delivered at or prior to
     the  closing  shall  have been paid or  delivered  (as  applicable)  to the
     Lender, including, without limitation, the fees set forth in Sections 2.5.1
     and 2.5.2 hereof and the legal fees and expenses of the Lender's counsel.

3.1.12 Delivery  of the  Shares.  The Shares  shall have been  delivered  to the
     Lender.

3.1.13 COES Contracts.  The equipment rental and license agreement for the Utica
     System,  and all other  existing  contracts  held by any  Guarantor for the
     installation  and/or use of COES Installations shall have been assigned to,
     or otherwise  transferred to, the Borrower pursuant to such assignments and
     other transfer documents as are acceptable to the Lender in all respects.

3.2  Conditions to the Funding Date Advances.  In addition to the conditions set
     forth in Section  3.1  hereof,  it shall be a  condition  precedent  to the
     Lender making the Funding Date Advances that:

3.2.1 Perfection of Security Interests and Liens. The Lender shall have received
     evidence,  in a form and  substance  satisfactory  to the Lender,  that the
     Lender has valid,  perfected first priority (except as otherwise  expressly
     set forth herein) Liens in all of the Collateral.

3.2.2 Third  Party  Consents.  The  Lender  shall  have  received,  in form  and
     substance acceptable to the Lender, all consents, waivers, acknowledgments,
     Collateral Access Agreements, and other agreements from third persons which
     Lender may deem  necessary or desirable  in order to permit,  protect,  and
     perfect its security  interests in, and liens upon, the  Collateral,  or to
     effectuate  the  provisions  or  purposes of this  Agreement  and the other
     Financing  Agreements,  including,  without  limitation,  Collateral Access
     Agreements for the Utica System.

3.2.3 Lock Box;  Deposit Account  Control  Agreements.  The lockbox  required by
     Section  2.3.1  hereof  shall  have  been  established  in a form  and of a
     substance acceptable to the Lender, and the Lender shall have received,  in
     form and  substance  acceptable  to the  Lender,  Deposit  Account  Control
     Agreements  by and among the  Borrower,  the  Lender,  and each bank  where
     Borrower has a deposit account, in each case, duly authorized, executed and
     delivered by such bank and Borrower (or Lender shall be the bank's customer
     with respect to such deposit account, as Lender may specify).

3.2.4 Insurance.  The Lender shall have received  correct and complete copies of
     all  insurance  policies of the  Borrower in  compliance  with  Section 5.2
     hereof and the certificates required thereby.

3.2.5 Release of Kerns  Judgment.  The Kerns  Judgment shall have been released,
     discharged,   satisfied,   settled,  or  otherwise  resolved  in  a  manner
     acceptable to the Lender.

3.2.6 Patriot Act  Information.  The Lender shall have  received,  at least five
     business  days  prior to the  Funding  Date,  all  documentation  and other
     information required by regulatory  authorities under applicable "know your
     customer"  and  anti-money  laundering  rules  and  regulations,  including
     without  limitation  the PATRIOT  Act,  and the making of the Funding  Date
     Advances   shall  be  subject   to   satisfactory   verification   of  such
     documentation and information.

3.3  Conditions to all Revolving  Advances.  In addition to the  conditions  set
     forth in Sections 3.1 and 3.2 hereof, it shall be a condition  precedent to
     the Lender making any Revolving Advance that:

3.3.1 Lender  shall have  received the required  written  borrowing  request and
     Compliance  Certificate in accordance with the provisions of Section 2.1.1,
     and such borrowing  request shall  otherwise  comply with the provisions of
     Section 2.1.1.

3.3.2 All representations and warranties  contained in the Financing  Agreements
     shall be true and correct in all material respects on and as of the date of
     each  borrowing  request  with the same effect as if made on and as of such
     date,  other than  representations  and warranties that relate solely to an
     earlier date.

3.3.3 On the date of each borrowing and after giving effect thereto,  no Default
     or Event of Default shall have occurred and be continuing.

3.3.4 The Lender shall have received  Collateral Access Agreements in a form and
     of a substance  acceptable  to the Lender for any COES  Installation  to be
     funded from the proceeds of such Revolving Advance.

SECTION 4.        REPRESENTATIONS AND WARRANTIES


     In order to induce the Lender to enter into this  Agreement,  the  Borrower
represents and warrants to the Lender as follows:

4.1  Organization.  The Borrower  and each  Guarantor  is a duly  organized  and
     validly existing  corporation or limited liability company in good standing
     under the laws of its  jurisdiction of formation with perpetual  existence,
     and has all requisite right, power and authority and all necessary licenses
     and permits to own and operate  its assets and  properties  and to carry on
     all business  activities  now  conducted  and as  presently  proposed to be
     conducted.  The Borrower and each  Guarantor  has  qualified and is in good
     standing as a foreign corporation or limited liability company, as the case
     may be,  in each  state or  other  jurisdiction  where  the  nature  of its
     business  or  the   ownership  or  use  of  its  property   requires   such
     qualification,  except such jurisdictions,  if any, in which the failure to
     be so qualified  will not have a material and adverse  effect on either the
     conduct of its business or the ownership of its properties.

4.2  Authorization.  The Borrower and each  Guarantor  have all requisite  legal
     right,  power and  authority to execute,  deliver and perform the terms and
     provisions of this Agreement,  the other Financing  Agreements  executed by
     it, and all other instruments and documents delivered by it pursuant hereto
     and thereto.  The Borrower  and each  Guarantor  have taken or caused to be
     taken all  necessary  action  to  authorize  the  execution,  delivery  and
     performance of this Agreement,  the other Financing  Agreements executed by
     it and any other related agreements,  instruments or documents delivered or
     to be delivered by the Borrower or any  Guarantor,  respectively,  pursuant
     hereto and thereto. This Agreement, the other Financing Agreements executed
     by the Borrower and each Guarantor and all related agreements,  instruments
     or  documents  delivered  or to be  delivered  pursuant  hereto or  thereto
     constitute and will constitute legal, valid and binding  obligations of the
     Borrower  and  each   Guarantor,   enforceable  in  accordance  with  their
     respective  terms,  subject  to  bankruptcy,  insolvency,   reorganization,
     moratorium and other similar laws  affecting the  enforcement of creditors'
     rights generally,  and to the exercise of judicial discretion in accordance
     with general principles of equity.

4.3  No Conflicts.  Neither the execution  and delivery of this  Agreement,  the
     other  Financing  Agreements,  or  any  of the  instruments  and  documents
     delivered or to be delivered pursuant hereto or thereto, by the Borrower or
     any Guarantor,  nor the consummation of the transactions  herein or therein
     contemplated,  nor compliance with the provisions  hereof or thereof,  will
     violate any law, statute or regulation, or any order, writ or decree of any
     court or governmental instrumentality,  or will conflict with, or result in
     the breach of, or constitute a default in any respect under, any indenture,
     mortgage,  deed of  trust,  agreement  or other  instrument  to  which  the
     Borrower is a party,  or by which it or any of its  properties may be bound
     or  affected,  or will result in the  creation or  imposition  of any lien,
     charge or encumbrance  upon any of their respective  properties  (except as
     contemplated  hereunder or under the other  Financing  Agreements)  or will
     violate any  provision of the Articles of  Incorporation  or By-Laws of the
     Borrower and any Guarantor, in each case, as amended to date.

4.4  Compliance  and Other  Agreements.  Except as set  forth on  Schedule  4.4.
     hereto:

4.4.1 Neither the Borrower nor any Guarantor is in default under any  indenture,
     mortgage,  deed of trust,  agreement or other  instrument  to which it is a
     party,  or by which it or any of its  properties  may be bound or affected,
     except for such defaults which,  individually or in the aggregate, will not
     have a material and adverse effect on the business, operations, property or
     assets or on the condition, financial or otherwise, of the Borrower or such
     Guarantor.

4.4.2 Neither the Borrower  nor any  Guarantor is in default with respect to any
     order,  writ,  injunction or decree of any court or of any federal,  state,
     municipal or other  governmental  department,  commission,  board,  bureau,
     agency or  authority,  domestic or  foreign,  or in  violation  of any law,
     statute or regulation,  domestic or foreign,  to which it is, or any of its
     properties are,  subject,  except for such defaults or violations which, in
     the aggregate, will not have a material and adverse effect on the business,
     operations, property or assets or on the condition, financial or otherwise,
     of the Borrower or such Guarantor.

4.4.3 Neither the Borrower  nor any  Guarantor is a party to or bound by, nor is
     any of its properties  bound or affected by, any agreement,  deed, lease or
     other instrument,  or subject to any charter or other corporate restriction
     or any judgment,  order,  writ,  injunction,  decree or award,  or any law,
     statute, rule or regulation,  any of which materially and adversely affects
     or in the future may (so far as the Borrower  may now  foresee)  materially
     and adversely  affect the business,  operations,  prospects,  properties or
     assets, or the condition,  financial or otherwise,  of the Borrower or such
     Guarantor.

4.4.4 Except for restrictions contained in this Agreement or any other agreement
     with respect to Indebtedness of Borrower  permitted  hereunder as in effect
     on the date hereof, there are no contractual or consensual  restrictions on
     Borrower or any of the Guarantors which prohibit or otherwise  restrict the
     transfer  of cash or  other  assets  (1)  between  Borrower  and any of the
     Guarantors or (2) between any Guarantor.

4.5  ERISA.  The Borrower is in  compliance  in all material  respects  with all
     applicable provisions of ERISA. Neither a Reportable Event nor a Prohibited
     Transaction  has occurred and is  continuing  with respect to any Plan;  no
     notice of intent to  terminate  a Plan has been filed nor has any Plan been
     terminated;  no circumstances  exist which constitute grounds under Section
     4042 of ERISA entitling the PBGC to institute proceedings to terminate,  or
     appoint a trustee to administrate,  a Plan, nor has the PBGC instituted any
     such proceedings;  neither the Borrower nor any ERISA Affiliate thereof has
     completely or partially  withdrawn from a Multiemployer  Plan; the Borrower
     and each ERISA Affiliate have met their minimum funding  requirements under
     ERISA with  respect to all of their Plans and the present fair market value
     of all Plan assets  exceeds the present value of all vested  benefits under
     each Plan, as determined on the most recent  valuation date of the Plan and
     in accordance with the provisions of ERISA and the  regulations  thereunder
     for  calculating  the  potential  liability  of the  Borrower  or any ERISA
     Affiliate  to PBGC or the Plan under  Title IV of ERISA;  and  neither  the
     Borrower nor any ERISA  Affiliate  has  incurred any  liability to the PBGC
     under ERISA.

4.6  Approvals  and  Consents.  All  authorizations,   consents,  registrations,
     exemptions,  approvals  and licenses  (governmental  or  otherwise)  or the
     taking  of  any  other  action  (including,   without  limitation,  by  the
     shareholders  of the Borrower and each  Guarantor)  which are required as a
     condition to the validity or  enforceability  of this Agreement,  the other
     Financing Agreements or any of the instruments or documents delivered or to
     be delivered pursuant hereto or thereto, have been effected or obtained and
     are in full force and effect.

4.7  Investment  Company.  The  Borrower  is not an  "investment  company"  or a
     company  "controlled" by an "investment  company" within the meaning of the
     Investment Company Act of 1940, as amended.

4.8  Regulation U; Securities  Exchange Act of 1934. The Borrower is not engaged
     principally, or as one of its more important activities, in the business of
     extending credit for the purpose of purchasing or carrying any margin stock
     (within the meaning of  Regulation  U or G of the Board of  Governors  (the
     "Board")  of the  Federal  Reserve  System).  None of the  proceeds  of the
     Revolving  Credit  Facility will be used,  directly or indirectly,  for the
     purpose of purchasing or carrying any margin stock or for any other purpose
     that  might  constitute  this  transaction  a "purpose  credit"  within the
     meaning of such  Regulation U. The Borrower  will not take,  nor permit any
     agent  acting on its or his behalf to take,  any action  which  might cause
     this Agreement or any of the Financing Agreements to violate any regulation
     of the  Board  or to  violate  the  Securities  Exchange  Act of 1934  (the
     "Exchange  Act") in each case as in effect on the date hereof or as amended
     hereafter.

4.9  Use of Funds.  The proceeds of the Revolving  Credit Facility shall be used
     by the Borrower solely (i) to design, build and operate COES Installations,
     (ii) to pay the fees,  costs,  and expenses  incurred or due in  connection
     with the  Revolving  Credit  Facility,  (iii) to pay the  Prepaid  Interest
     Advance, and (iv) for other purposes expressly permitted herein.

4.10 Financial  Statements.  The Borrower has heretofore delivered to the Lender
     the financial statements of the Borrower for the fiscal year ended December
     31, 2006 and the internal  financial  statements for the nine-month  period
     ended  September 30, 2007  (consisting  in each case of balance  sheets and
     related statements of income,  retained earnings,  shareholders' equity and
     cash flows for the fiscal year or period then ended,  including the related
     schedules  annexed  thereto).  Such financial  statements  were prepared in
     accordance with GAAP and present fairly the financial  position and results
     of  operations  of the  Borrower  as of the  dates  of and for the  periods
     involved.   There  are  no  liabilities,   direct  or  indirect,  fixed  or
     contingent,  of the  Borrower as of the date of such  financial  statements
     that were not reflected  therein or in the notes thereto in accordance with
     GAAP. There has been no material adverse change since September 30, 2007 in
     the business, operations, property, or assets of the Borrower.

4.11 Taxes.  The  Borrower  has  filed or  caused  to be filed  all tax  returns
     required  to be filed by it.  The  Borrower  has paid all taxes  (including
     interest  and  penalties)  as shown on such  returns or any  assessment  or
     notice of tax claim or deficiency  received by it or him to the extent that
     such taxes have become due except as otherwise  disclosed on Schedule 4.11.
     The  Borrower has no  knowledge  of any  proposed  material tax  assessment
     against or affecting it and is not  otherwise  obligated by any  agreement,
     instrument or otherwise to contribute to the payment of taxes owed by it or
     him, or any other  Person,  except as is  otherwise  disclosed  on Schedule
     4.11. All material tax liabilities are adequately  provided for or reserved
     against on the books of the Borrower in accordance with GAAP.

4.12 Title to Properties/Priority of Liens.

4.12.1 The Borrower and each  Guarantor  have good and  marketable  title to, or
     valid leasehold interests in, all of the properties and assets reflected on
     the  most  recent  of the  financial  statements  delivered  to the  Lender
     pursuant to Section 4.10 or acquired by it after the date of such financial
     statement  and prior to the date hereof,  except for those  properties  and
     assets which have been  disposed of since such date in the ordinary  course
     of  business.  All such  properties  and  assets are owned or leased by the
     Borrower or any Guarantor, free and clear of all mortgages, pledges, liens,
     security interests, encumbrances or charges of any kind, except (i) such as
     are  disclosed on Schedule  4.12  hereto,  (ii) such as are in favor of the
     Lender, and (iii) such as are permitted under the provisions of Section 6.2
     hereof.

4.12.2 The liens and  security  interests  granted to the Lender by the Borrower
     and each Guarantor under the Security Agreement,  the Pledge Agreement, the
     IP Security Agreement,  and the Mortgages,  respectively,  constitute valid
     and  perfected  liens and  security  interests  in the  collateral  secured
     thereby and,  except as disclosed on Schedule  4.12 hereto,  such liens and
     security interests shall be prior to all other liens and security interests
     in such collateral.

4.13 Litigation.  Except  as set forth on  Schedule  4.13  hereto,  there are no
     actions, suits,  investigations or administrative  proceedings of or before
     any court,  arbitrator  or  Governmental  Authority  pending or  threatened
     against the Borrower,  each Guarantor or any of their respective properties
     or assets  which (i) either in any case or in the  aggregate,  if adversely
     determined, would materially and adversely affect the business, operations,
     prospects,  properties or assets or the condition,  financial or otherwise,
     of the Borrower,  or (ii) question the validity or  enforceability  of this
     Agreement,  the  Financing  Agreements,  or  any  action  to  be  taken  in
     connection with the transactions contemplated hereby or thereby.

4.14 Insurance.  All physical  properties and assets of the Borrower are insured
     in accordance with the requirements of Section 5.2.2 hereof.

4.15 Brokers.  No broker or finder  acting on behalf of the Borrower has brought
     about  the  consummation  of  the  transactions  contemplated  hereby.  The
     Borrower has not taken, and will not take, any action which would cause the
     Lender to have any  obligation or liability to any Person for finders fees,
     brokerage fees, agents' commissions or like payments in connection with the
     execution  and  delivery  of this  Agreement,  or the  consummation  of the
     transactions contemplated hereby.

4.16 Disclosure. No certificate,  statement,  report or other document furnished
     to the Lender by or on behalf of the Borrower in connection  herewith or in
     connection with any transaction  contemplated hereby, or this Agreement, or
     any Financing  Agreement,  contains any untrue statement of a material fact
     or  omits  to  state  any  material  fact  necessary  in  order to make the
     statements contained therein not misleading.

4.17 Bank Accounts.  All of the deposit accounts,  investment  accounts or other
     accounts in the name of or used by Borrower maintained at any bank or other
     financial institution are set forth on Schedule 4.17 hereto.

4.18 Subsidiaries; Affiliates; Solvency.

4.18.1 Borrower does not have any direct or indirect  Subsidiaries or Affiliates
     and is not engaged in any joint venture or partnership  except as set forth
     in Schedule 4.18 hereto.

4.18.2 Borrower is Solvent and will continue to be Solvent after the creation of
     the Revolving  Credit  Facility,  the security  interests of Lender and the
     other transaction contemplated hereunder.

4.19 Environmental Compliance.


4.19.1 Except as set forth on Schedule 4.19 hereto,  Borrower has not generated,
     used, stored,  treated,  transported,  manufactured,  handled,  produced or
     disposed of any Hazardous Materials, on or off its premises (whether or not
     owned  by it) in any  manner  which at any time  violates  in any  material
     respect any applicable  Environmental Law or permit,  and the operations of
     Borrower complies in all material respects with all Environmental  Laws and
     all permits.

4.19.2  Except  as set  forth  on  Schedule  4.19  hereto,  there  has  been  no
     investigation by any Governmental  Authority or any proceeding,  complaint,
     order,  directive,  claim, citation or notice by any Governmental Authority
     or any  other  person  nor is any  pending  or to the  best  of  Borrower's
     knowledge threatened,  with respect to any non compliance with or violation
     of the  requirements of any  Environmental  Law by Borrower or the release,
     spill or discharge,  threatened or actual, of any Hazardous Material or the
     generation, use, storage, treatment, transportation, manufacture, handling,
     production   or  disposal  of  any   Hazardous   Materials   or  any  other
     environmental,  health or safety matter,  which adversely  affects or could
     reasonably be expected to adversely affect in any material respect Borrower
     or its business,  operations or assets or any  properties at which Borrower
     has transported, stored or disposed of any Hazardous Materials.

4.19.3 Except as set forth on Schedule  4.19  hereto,  Borrower  has no material
     liability (contingent or otherwise) in connection with a release,  spill or
     discharge,  threatened  or  actual,  of  any  Hazardous  Materials  or  the
     generation, use, storage, treatment, transportation, manufacture, handling,
     production or disposal of any Hazardous Materials.

4.19.4 Borrower has all permits  required to be obtained or filed in  connection
     with the operations of Borrower under any Environmental Law and all of such
     licenses,  certificates,  approvals  or  similar  authorizations  and other
     permits are valid and in full force and effect.

4.20 Intellectual  Property;  License  Agreement.  Borrower  owns or licenses or
     otherwise has the right to use all Intellectual  Property necessary for the
     operation  of  its  business  as  presently  conducted  or  proposed  to be
     conducted.  As of the date hereof,  Borrower does not have any Intellectual
     Property  registered,  or subject to  pending  applications,  in the United
     States Patent and Trademark  Office or any similar  office or agency in the
     United States, any State thereof,  any political  subdivision thereof or in
     any other country,  other than those  described in Schedule 4.20 hereto and
     has not granted any licenses  with respect  thereto other than as set forth
     in Schedule 4.20. No event has occurred which permits or would permit after
     notice  or  passage  of  time  or  both,  the  revocation,   suspension  or
     termination of such rights. To the best of Borrower's knowledge,  no slogan
     or other advertising device, product,  process,  method, substance or other
     Intellectual  Property or goods bearing or using any Intellectual  Property
     presently  contemplated to be sold by or employed by Borrower infringes any
     patent,  trademark,  servicemark,  tradename,  copyright,  license or other
     Intellectual  Property owned by any other Person  presently and no claim or
     litigation  is  pending  or  threatened   against  or  affecting   Borrower
     contesting  its  right  to  sell  or use any  such  Intellectual  Property.
     Schedule 4.20 hereto sets forth all of the agreements or other arrangements
     of Borrower  pursuant to which Borrower has a license or other right to use
     any  trademarks,  logos,  designs,  representations  or other  Intellectual
     Property  owned by another  person as in effect on the date  hereof and the
     dates  of the  expiration  of such  agreements  or  other  arrangements  of
     Borrower as in effect on the date hereof (collectively,  together with such
     agreements or other  arrangements  as may be entered into by Borrower after
     the date hereof, collectively, the "License Agreements" and individually, a
     "License  Agreement").  No  trademark,  servicemark,   copyright  or  other
     Intellectual  Property  at any  time  used by  Borrower  which  is owned by
     another  person,  or owned by Borrower  subject to any  security  interest,
     lien,  collateral  assignment,  pledge or other encumbrance in favor of any
     person other than Lender. Without limiting the foregoing, Borrower is party
     to that certain  License  Agreement  dated  December  ___,  2007 (the "COES
     License  Agreement")  executed by and between Borrower's parent company, GS
     Ethanol,  and pursuant  thereto holds the  intellectual  property rights to
     build and operate the COES  Installations  based on the Technology (as such
     term is defined in the COES  License  Agreement),  as well as that  certain
     COES  Installation  located  at Utica  Energy,  LLC,  4995  State  Road 91,
     Oshkosh, WI 54904 (the "Utica System").  The COES License Agreement remains
     in full force and  effect,  and  neither  the  Borrower or GS Ethanol is in
     default or breach of any of the terms thereof.

4.21 No Event of Default. After giving effect to the transactions contemplated
by this Agreement, the other Financing Agreements and the other instruments or
documents delivered in connection herewith and therewith, there does not exist
at the date hereof any Default or Event of Default.

4.22 Names.  Neither the Borrower nor any  Guarantor has been known by any other
     corporate or fictitious name.

SECTION 5.        AFFIRMATIVE COVENANTS.


     The Borrower  covenants and agrees that,  until all of the  Obligations are
paid and satisfied in full,  it shall  comply,  or cause  compliance  with,  the
following covenants:

5.1  Preservation  of  Existence.  The  Borrower  and each  Guarantor  will each
     preserve and maintain its existence,  rights,  franchises and privileges in
     the  jurisdiction of its formation and will qualify and remain qualified as
     a foreign  corporation in each jurisdiction in which such  qualification is
     necessary or desirable in view of its business and operations or in view of
     the ownership of its properties.

5.2  Maintenance of Properties; Insurance.

5.2.1 The Borrower and each Guarantor will each maintain in good repair, working
     order and condition all properties used or useful in its business (ordinary
     wear and tear excepted) and from time to time will make or cause to be made
     all  appropriate   repairs,   renewals  and  replacements,   additions  and
     improvements  thereto to the extent  necessary  for the  operation of their
     respective businesses.

5.2.2 The Borrower and each Guarantor shall be a beneficiary of insurance,  with
     financially  sound and  reputable  insurers  reasonably  acceptable  to the
     Lender, with respect to its properties and business, against loss or damage
     of the kinds and in the amounts  customarily  insured against by businesses
     of  established  reputation  engaged in the same or a similar  business and
     similarly situated.

5.2.3 The Borrower  shall provide the Lender with evidence  satisfactory  to the
     Lender that each policy  provided  for in this Section 5.2 is in full force
     and  effect  and that the  Lender is named as loss  payee,  mortgagee,  and
     additional  insured on such policies,  and each such policy shall include a
     non-contributory  lender's  loss payable  endorsement  and provide that the
     Lender   shall   receive  not  less  than  thirty  (30)  days'   notice  of
     cancellation.

5.3  Payment  of  Taxes.  The  Borrower  and each  Guarantor  will  each pay and
     discharge promptly all taxes (including,  without  limitation,  all payroll
     withholdings),  assessments and governmental charges or levies imposed upon
     it or upon  its  income  or  profits  or upon  any of its  property,  real,
     personal or mixed,  or upon any part thereof,  before the same shall become
     in default;  provided,  however, that the Borrower and each Guarantor shall
     not be required to pay any such tax,  assessment,  charge, levy or claim if
     the validity or amount  thereof  shall be contested in good faith by proper
     proceedings,  and if the Borrower or any  Guarantor it shall have set aside
     on its books appropriate reserves.

5.4  Field Audit and Examinations.

5.4.1 Without  limiting  the  rights of the  Lender  under  any other  Financing
     Agreement,  the Lender, or any Person designated by the Lender,  shall have
     the right,  from time to time to call at the place or places of business of
     the Borrower or any Guarantor  (or any other place where the  Collateral or
     any  information  relating  thereto is kept or located)  during  reasonable
     business  hours,  and without  hindrance or delay,  and in the absence of a
     Default or an Event of Default,  upon one (1) Business Days notice,  (i) to
     inspect,  audit,  check and make  copies of and  extracts  from the  books,
     records,  journals,  correspondence and other data relating to the business
     of the Borrower and any Guarantor,  (ii) to verify such matters  concerning
     the  Collateral  as the Lender (in its sole and  absolute  discretion)  may
     consider  appropriate,  and (iii) to  discuss  the  affairs,  finances  and
     business  of the  Borrower  or  any  Guarantor  and  with  their  officers,
     directors  and  accountants.  Upon  request,  the Borrower will provide the
     Lender with copies of such documents as the Lender may reasonably  request.
     The  Borrower  shall pay on demand all  reasonable  out-of-pocket  expenses
     incurred by the Lender in connection with such field audits. In addition to
     the foregoing,  the Borrower and NextGen Fuel shall provide the Lender with
     electronic access to view their bank accounts, if such access is available.

5.5  Accounting;  Financial Statements and Other Information.  The Borrower will
     maintain a system of accounting  established and administered in accordance
     with GAAP and will set aside on its books all such proper reserves for each
     fiscal year for  depreciation,  obsolescence,  amortization,  bad debts and
     other purposes as shall be required by GAAP. The Borrower will deliver,  or
     cause to be delivered, to the Lender:

5.5.1 As soon as practicable  after the end of each fiscal year of the Borrower,
     and in any event within ninety (90) days thereafter, a balance sheet of the
     Borrower as at the end of such year and the related  statements  of income,
     retained earnings,  shareholders'  equity and changes in financial position
     of the Borrower for such year, all in reasonable detail and satisfactory in
     scope to the Lender,  setting  forth in each case in  comparative  form the
     corresponding figures for the preceding fiscal year, which statements shall
     be prepared in accordance  with GAAP  (subject to minor  reclassifications)
     and prepared by  management  and with in one hundred and eighty days (180),
     Financial  Statements  in  accordance  with GAAP audited by an  independent
     certified  public  accounting firm of recognized  standing  selected by the
     Borrower  and  acceptable  to the  Lender,  and shall  fairly  present  the
     financial  position  and  operations  of the Borrower as of the end of such
     year;

5.5.2 As soon as practicable,  but in no event later than thirty (30) days prior
     to end of each fiscal year, projected financial statements,  business plan,
     and cash  flow  forecasts  for the next  fiscal  year,  together  with such
     supporting information as the Lender may reasonably request.

5.5.3 As soon as practicable following the end of the each fiscal quarter of the
     Borrower,  but in any event not later than sixty (60) days  thereafter,  an
     unaudited  balance  sheet of the Borrower as of the end of such quarter and
     the  related  combined   statements  of  income,   retained   earnings  and
     shareholders'  equity of the Borrower for such  quarter,  all in reasonable
     detail and satisfactory in scope to the Lender, setting forth for each such
     period in comparative  form the  corresponding  figures for the appropriate
     period of the preceding  fiscal year, which statements shall be prepared in
     accordance  with GAAP and,  subject to normal year-end  adjustments,  shall
     present fairly the financial  position and operations of the Borrower as at
     the end of the period involved;

5.5.4 Promptly upon receipt thereof,  copies of any reports (including,  without
     limitation,  any  management  letters)  submitted  to the  Borrower  by any
     independent  certified public accountant in connection with the examination
     of the annual or  interim  financial  statements  of the  Borrower  by such
     accountant;

5.5.5 Promptly upon the issuance thereof, copies of all reports, if any, sent by
     the  Borrower  to the  Securities  and  Exchange  Commission  or any  other
     governmental agency or any securities exchange;

5.5.6 On a monthly basis, a written update on the status of the  registration of
     equity  securities  by each of  GreenShift,  GS AgriFuels  and GS CleanTech
     pursuant to certain existing agreements with the Lender;

5.5.7 Concurrently with the delivery of the financial  statements required to be
     furnished by Sections 5.5.1 and 5.5.2 hereof,  a certificate  signed by the
     chief  executive  officer of the Borrower  stating (a) that a review of the
     activities  of each during  such  period has been made under his  immediate
     supervision  with a view to  determining  whether such entity has observed,
     performed and fulfilled all of its obligations  under this  Agreement,  and
     (b) that to his knowledge  there  existed  during such period no Default or
     Event of  Default or if any such  Default  or Event of  Default  did exist,
     specifying  the nature  thereof,  the period of existence  thereof and what
     action such entity proposes to take, or has taken, with respect thereto;

5.5.8 Promptly  upon  learning  of the  occurrence  of any  Default  or Event of
     Default,  a  certificate  signed  by the  chief  executive  officer  of the
     Borrower  specifying the nature thereof and the action the Borrower propose
     to take or has taken with respect thereto;

5.5.9 Immediately  upon becoming aware of any  development or other  information
     which  may  materially  and  adversely  affect  the  properties,  business,
     profits, condition of the Collateral or financial condition of the Borrower
     or the ability of the Borrower to perform or comply with this  Agreement or
     to pay any of the Obligations,  telephonic or telegraphic notice specifying
     the nature of such development or information and such anticipated effect;

5.5.10  Concurrently  with  the  receipt  thereof,  copies  of all  signed  sale
     contracts with respect to any new COES  Installation,  including the price,
     payment terms and expected delivery date thereof;

5.5.11 On the fifth day of each month,  or more  frequently  upon the request of
     the Lender,  the Borrower shall provide the Lender with (i) a comparison of
     the actual status of the Borrower's  installation of the COES Installations
     (including  costs and expenses to date broken out by  installation)  to the
     projections set forth in the Build Out Draw Schedule, (ii) an updated Build
     Out Draw  Schedule,  in a form and of a nature  acceptable to the Lender in
     all respects, (iii) a comparison of the Borrower's actual operations to the
     Cash Flow Projections for the prior month, and (iv) an executed  Compliance
     Certificate;

5.5.12 On the Monday of each week,  a report,  in a form  acceptable  to Lender,
     setting forth all receipts  into, and all  disbursements  from, the Blocked
     Account for the prior week; and

5.5.13 With reasonable promptness,  such other data and information as from time
     to time may be  reasonably  requested  by the  Lender  with  respect to the
     Borrower.

5.6  Compliance.   The  Borrower  will  comply  with  the  requirements  of  all
     applicable  laws,   rules,   regulations  or  orders  of  any  Governmental
     Authority,  and all  agreements to which it is a party,  the  noncompliance
     with which laws, rules, regulations, orders and agreements would materially
     adversely  affect the  business  operations,  prospects  or assets,  or the
     condition, financial or otherwise, of the Borrower.

5.7  ERISA. The Borrower shall maintain compliance in all material respects with
     the  applicable  provisions  of ERISA.  The  Borrower  will  deliver to the
     Lender,  promptly  after the  filing or  receiving  thereof,  copies of all
     reports,  including  annual  reports and notices,  which the Borrower files
     with or receives from the PBGC or the U.S. Department of Labor under ERISA;
     and as soon as possible and in any event within  thirty (30) days after the
     Borrower  knows  or has  reason  to  know  that  any  Reportable  Event  or
     Prohibited  Transaction  has occurred  with respect to any Plan or that the
     PBGC, the Borrower has instituted or will institute proceedings under Title
     IV of ERISA to terminate any Plan,  the Borrower will deliver to the Lender
     a certificate of the chief executive  officer or chief financial officer of
     the  Borrower  setting  forth the  details as to such  Reportable  Event or
     Prohibited  Transaction  or Plan  termination  and the action the  Borrower
     proposes to take with respect thereto.

5.8  Ownership/Control. Borrower shall continue to own not less than 100% of the
     equipment and other assets  associated with the Utica System as well as all
     other COES Installations, provided, however, that if the customer utilizing
     the Utica  System opts to exercise  the  purchase  option  contained in its
     equipment rental and license  agreement with the Borrower,  and 100% of the
     proceeds  from such  purchase are  delivered to the Lender to be applied in
     reduction of the  Obligations  in a manner  determined by the Lender in its
     sole and exclusive  discretion,  then such sale of the Utica System to such
     customer shall not constitute an Event of Default hereunder.

5.9  Change in Business.  Neither the Borrower nor any  Guarantor  will make any
     material  change in the character of its business as carried on at the date
     hereof.

5.10 Notification  to Lender.  The Borrower shall promptly  notify the Lender of
     (a)  any  Event  of  Default,  (b)  any  Default,  (c)  any  litigation  or
     proceedings  that are  instituted  or  threatened  (to the knowledge of the
     Borrower)  against the Borrower,  any Guarantor or any of their  respective
     assets, (d) each and every default by the Borrower under any obligation for
     borrowed  money  which  would  permit  the  holder  of such  obligation  to
     accelerate  its maturity,  including the names and addresses of the holders
     of  such  obligation  and  the  amount  thereof,  (e)  any  change  in  the
     jurisdiction  of  formation  or chief  executive  office of the Borrower or
     location of any of the Collateral  from that listed in any of the Financing
     Agreements,  in each case, describing the nature thereof and the action the
     Borrower  or any  Guarantor,  as the case  may be,  proposes  to take  with
     respect  thereto,  and (f)  Borrower  shall give  written  notice to Lender
     immediately  upon  Borrower's  receipt  of any  notice  of,  or  Borrower's
     otherwise obtaining knowledge of, (i) the occurrence of any event involving
     the release,  spill or discharge,  threatened  or actual,  of any Hazardous
     Material  or  (ii)  any  investigation,   proceeding,   complaint,   order,
     directive,   claims,   citation  or  notice   with   respect  to:  (A)  any
     non-compliance  with or violation of any  Environmental  Law by Borrower or
     (B) the release, spill or discharge, threatened or actual, of any Hazardous
     Material  other than in the  ordinary  course of business and other than as
     permitted under any applicable Environmental Law.

5.11 Environmental  Compliance.  Borrower shall take prompt action to respond to
     any material  non-compliance  with any of the Environmental  Laws and shall
     regularly  report  to  Lender  on  such  response.   Without  limiting  the
     generality of the foregoing,  whenever  Lender  reasonably  determines that
     there is  non-compliance,  or any condition which requires any action by or
     on  behalf  of  Borrower  in order to avoid  any non  compliance,  with any
     Environmental  Law,  Borrower  shall,  at Lender's  request and  Borrower's
     expense:  (a)  cause  an  independent   environmental  engineer  reasonably
     acceptable  to Lender to conduct  such  tests of the site where  Borrower's
     non-compliance or alleged non compliance with such  Environmental  Laws has
     occurred  as to such  non-compliance  and  prepare  and deliver to Lender a
     report as to such non-compliance setting forth the results of such tests, a
     proposed  plan  for  responding  to any  environmental  problems  described
     therein,  and an estimate of the costs  thereof and (b) provide to Lender a
     supplemental   report  of  such   engineer   whenever  the  scope  of  such
     non-compliance,  or  Borrower's  response  thereto or the  estimated  costs
     thereof, shall change in any material respect. Borrower shall indemnify and
     hold harmless Lender, its directors, officers, employees, agents, invitees,
     representatives,  successors  and  assigns,  from and  against  any and all
     losses,  claims,  damages,  liabilities,  costs,  and  expenses  (including
     reasonable attorneys' fees and expenses) directly or indirectly arising out
     of or  attributable  to the  use,  generation,  manufacture,  reproduction,
     storage,  release,  threatened  release,  spill,  discharge,   disposal  or
     presence of a Hazardous  Material,  including  the costs of any required or
     necessary  repair,  cleanup  or other  remedial  work with  respect  to any
     property of Borrower and the preparation and implementation of any closure,
     remedial  or  other  required  plans.  All   representations,   warranties,
     covenants and indemnifications in this Section shall survive the payment of
     the Obligations and the termination of this Agreement.

5.12 Further  Assurances.  The Borrower  will duly execute and deliver,  or will
     cause to be duly  executed  and  delivered,  such further  instruments  and
     documents,   including,   without   limitation,   any  additional  security
     agreements,  Uniform Commercial Code financing  statements or amendments or
     continuations  thereof,  and will do or use its best efforts to cause to be
     done such  further  acts as may be  necessary  or  proper  in the  Lender's
     opinion to effectuate  the provisions or purposes of this Agreement and the
     other Financing Agreements.

5.13 License Agreements.

5.13.1 Borrower shall (i) promptly and faithfully observe and perform all of the
     material  terms,  covenants,  conditions  and  provisions  of the  material
     License  Agreements  to be observed  and  performed by it, at the times set
     forth therein,  if any, (ii) not do,  permit,  suffer or refrain from doing
     anything that could  reasonably be expected to result in a default under or
     breach of any of the terms of any  material  License  Agreement,  (iii) not
     cancel,  surrender,  modify,  amend,  waive or release any material License
     Agreement  in any material  respect or any term,  provision or right of the
     licensee  thereunder  in any material  respect,  or consent to or permit to
     occur any of the foregoing;  except, that, subject to Section 5.13.2 below,
     Borrower may cancel, surrender or release any material License Agreement in
     the ordinary course of the business of Borrower;  provided,  that, Borrower
     shall give Lender not less than thirty  (30) days prior  written  notice of
     its intention to so cancel, surrender and release any such material License
     Agreement,  (iv) give Lender prompt written notice of any material  License
     Agreement  entered into by Borrower after the date hereof,  together with a
     true,  correct and complete  copy thereof and such other  information  with
     respect  thereto as Lender may  request,  (v) give  Lender  prompt  written
     notice of any material  breach of any  obligation,  or any default,  by any
     party under any material License Agreement, and deliver to Lender (promptly
     upon the receipt  thereof by Borrower in the case of a notice to  Borrower,
     and  concurrently  with the  sending  thereof in the case of a notice  from
     Borrower) a copy of each notice of default and every other notice and other
     communication  received or  delivered  by Borrower in  connection  with any
     material  License  Agreement  which  relates  to the right of  Borrower  to
     continue to use the property  subject to such License  Agreement,  and (vi)
     furnish to Lender,  promptly upon the request of Lender,  such  information
     and  evidence  as  Lender  may  require  from time to time  concerning  the
     observance,  performance  and  compliance by Borrower or the other party or
     parties  thereto with the terms,  covenants or  provisions  of any material
     License Agreement.

5.13.2 Borrower  will either  exercise any option to renew or extend the term of
     each  material  License  Agreement in such manner as will cause the term of
     such material License  Agreement to be effectively  renewed or extended for
     the period  provided by such option and give prompt  written notice thereof
     to Lender or give Lender prior written notice that Borrower does not intend
     to renew or extend the term of any such material License  Agreement or that
     the term thereof shall otherwise be expiring, not less than sixty (60) days
     prior to the date of any such  non-renewal or  expiration.  In the event of
     the  failure  of any  Borrower  to  extend or renew  any  material  License
     Agreement,  Lender shall have, and is hereby granted, the irrevocable right
     and authority,  at its option, to renew or extend the term of such material
     License  Agreement,  whether in its own name and behalf, or in the name and
     behalf of a  designee  or  nominee  of Lender or in the name and  behalf of
     Borrower,  as Lender  shall  determine at any time that an Event of Default
     shall exist or have occurred and be  continuing.  Lender may, but shall not
     be required  to,  perform any or all of such  obligations  of any  Borrower
     under any of the  License  Agreements,  including,  but not limited to, the
     payment of any or all sums due from Borrower  thereunder.  Any sums so paid
     by Lender shall constitute part of the Obligations.

5.13.3 For the  purposes  of this  Section  5.13,  the  COES  License  Agreement
     constitutes a material License Agreement.

5.14 Build Out Draw Schedule.  The Borrower shall install the COES Installations
     in  accordance  with,  and  subject  to,  the Build Out Draw  Schedule.  In
     addition,  the  Borrower  shall have  installed  no less than four (4) COES
     Installations  (in addition to the Utica System) on or before June 30, 2008
     and no less  than  three (3)  additional  COES  Installations  on or before
     September 30, 2008.

5.15 Compliance with Projections.

5.15.1 EBITDA Projections. The actual results of the Borrower's operations shall
     not negatively vary from the Borrower's Cash Flow  Projections for the line
     item  labeled  "EBITDA"  by more than ten  percent  (10%) on both a monthly
     basis  (commencing with the month of July, 2008), and on a cumulative basis
     from July 1, 2008 through the last day of the month just ended prior to the
     testing date.  This covenant shall be tested  monthly,  on the fifth day of
     each month.

5.15.2  Capex  Projections.   The  actual  costs  and  expenses  of  purchasing,
     assembling,  and  installing  each COES  Installation  shall not exceed the
     amounts set forth for the same in the Borrower's Cash Flow  Projections and
     Build Out Draw  Schedule by more than ten percent  (10%) on a monthly basis
     and on a cumulative  basis from January 1, 2008 through the last day of the
     month just ended prior to the testing date.  This covenant  shall be tested
     monthly, on the fifth day of each month.

5.16 Minimum  Production.  Each COES Installation  shall produce no less than an
     average of 1,250,000 gallons of corn oil each year.

SECTION 6.        NEGATIVE COVENANTS


     The Borrower  covenants and agrees that,  until all of the  Obligations are
paid and  satisfied in full,  it shall  comply,  or cause  compliance,  with the
following covenants:

6.1  Investments and Guaranties. The Borrower shall not, directly or indirectly,
     assume,   guarantee,   endorse  or  otherwise  be  or  become  directly  or
     contingently  responsible  or  liable  for the  obligations  of any  Person
     (including,  but not limited to, an agreement  to purchase any  obligation,
     stock, assets, goods or services or to supply or advance any funds, assets,
     goods,  or  services  other than in the  ordinary  course of  business,  or
     otherwise to assure the  creditors of any Person  against  loss) other than
     (a)  guarantees by  endorsement  of negotiable  instruments  for deposit or
     collection or similar  transactions  in the ordinary course of business and
     (b) guarantees in favor of the Lender,  or make any investments  other than
     (i) investments in cash or Cash Equivalents,  provided,  that, (1) no Loans
     are then outstanding and (2) the terms and conditions of Section 2.3 hereof
     shall have been satisfied with respect to the deposit  account,  investment
     account or other account in which such cash or Cash  Equivalents  are held,
     and (ii) the existing equity investments of Borrower as of the date hereof,
     provided,  that such  equity  investments  have been  pledged to the Lender
     pursuant to the Pledge Agreement.

6.2  Limitation on Liens.  Neither the Borrower nor any  Guarantor  will create,
     assume or suffer to exist any lien,  mortgage,  pledge or other encumbrance
     of any kind with  respect to its real or  personal  property,  whether  now
     owned or hereafter acquired,  except for: (i) liens in favor of the Lender,
     (ii) liens for taxes or assessments or other  government  charges or levies
     not yet due and payable or if due and payable being  actively  contested in
     good faith by appropriate  proceedings and for which  appropriate  reserves
     are   maintained;   (iii)  liens  imposed  by  law,  such  as   mechanics',
     materialmen's,  and landlords' liens,  securing obligations incurred in the
     ordinary  course  of  business  which  are not past due or which  are being
     actively  contested in good faith by appropriate  proceedings and for which
     appropriate  reserves  have been  established;  (iv) liens under  workmen's
     compensation,   unemployment   insurance,   social   security   or  similar
     legislation  arising in the  ordinary  course of business and for which the
     underlying  obligations are not yet due; (v) liens, deposits, or pledges to
     secure the performance of leases, statutory obligations,  surety and appeal
     bonds or other  similar  obligations  arising  in the  ordinary  course  of
     business;  (vi) judgment and other similar liens arising in connection with
     court  proceedings,  provided the  execution or other  enforcement  of such
     liens is  effectively  stayed,  and the claims  secured  thereby  are being
     actively  contested in good faith and by  appropriate  proceedings  and for
     which appropriate reserves have been established;  and (vii) liens existing
     on the date  hereof and listed on  Schedule  4.12  hereto  (and  extension,
     renewal and replacement liens upon the same property subject to such listed
     lien,  provided that the amount secured by each such lien constituting such
     an  extension,  renewal  or  replacement  lien  shall not exceed the amount
     secured by the lien theretofore existing).

6.3  Additional  Obligations.  Neither the Borrower nor any Guarantor  shall not
     create,  incur, assume or permit to exist any Indebtedness,  except (i) all
     Indebtedness  incurred under this Agreement and the Financing Agreements or
     any other  agreement  with the  Lender;  (ii) trade  payables  and  current
     operating  liabilities  (other  than  for  borrowed  money),  in each  case
     incurred in the  ordinary  course of business and not more than thirty (30)
     days past due (or if past due the obligation  with respect thereto is being
     actively  contested in good faith and by  appropriate  proceedings),  (iii)
     Indebtedness secured by liens referred to in Section 6.2 and (iv) all other
     obligations which are subordinate in right of payment to the Obligations of
     the Borrower  hereunder,  provided that the terms of such  obligations  and
     their subordination are previously  approved by the Lender in writing,  and
     provided  that no such  obligations  shall be paid or prepaid other than in
     accordance with such terms as have been  previously  approved in writing by
     the Lender.  Neither the Borrower nor any Guarantor  shall  substitute  any
     collateral  with respect to any  obligations  to any  creditor  without the
     prior  written  consent of the  Lender,  which may be  withheld in its sole
     discretion.

6.4  Mergers,  Etc..  Neither the Borrower,  nor any Guarantor shall dissolve or
     otherwise sell or dispose of all or any  substantial  part of its assets or
     consolidate  with or merge into another entity or business or permit one or
     more  entities  to  consolidate  with or merge into it,  without  the prior
     consent of the Lender.

6.5  Accounting  Changes.  The  Borrower  shall  not  make  any  change  in  its
     accounting treatment or financial reporting practices except as required by
     GAAP, and then only upon giving the Lender prior notice thereof.

6.6  Negative  Pledges,  Etc..  The Borrower  shall not enter into any agreement
     (other than this  Agreement  or any other  Financing  Agreement)  which (i)
     prohibits  the creation or  assumption of any Lien superior to the Lender's
     Lien  upon  any of  the  Collateral,  including,  without  limitation,  any
     hereafter acquired property or (ii) specifically prohibits the amendment or
     other modification of this Agreement or any other Financing Agreement.

6.7  Recapitalization.  The Borrower  shall not sell,  issue or agree to sell or
     issue any  capital  stock of any class,  except  with the  express  written
     consent  of the  Lender,  which  consent  may be given or  withheld  in the
     Lender's sole and exclusive discretion.

6.8  Dividends and Redemptions.  Except as may be expressly permitted by written
     agreement between the Borrower and the Lender,  Borrower shall not directly
     or  indirectly,  declare or pay any dividends on account of any  membership
     interests of the Borrower  now or  hereafter  outstanding,  or set aside or
     otherwise deposit or invest any sums for such purpose,  or redeem,  retire,
     defease,  purchase or  otherwise  acquire any  membership  interest (or set
     aside or  otherwise  deposit or invest any sums for such  purpose)  for any
     consideration or apply or set apart any sum, or make any other distribution
     (by  reduction  of capital or  otherwise)  in respect of any such shares or
     agree to do any of the foregoing.

6.9  Transactions  with Affiliates.  Borrower shall not, directly or indirectly,
     (i)  purchase,  acquire or lease any property  from,  or sell,  transfer or
     lease  any  property  to,  any  officer,  director,  agent or other  person
     affiliated with Borrower, except (x) in the ordinary course of and pursuant
     to the  reasonable  requirements  of Borrower's  business and upon fair and
     reasonable  terms no less  favorable to the Borrower  than  Borrower  would
     obtain  in a  comparable  arm's  length  transaction  with an  unaffiliated
     person,  and (y) the assignment of the License  Agreement and contracts for
     COES Installations contemplated in Sections 3.1.13, 3.3.4, and 4.20 hereof,
     or (ii) make any  payments  of  management,  consulting  or other  fees for
     management  or  similar  services,  or of  any  Indebtedness  owing  to any
     officer,  employee,  shareholder,  director or other  Affiliate of Borrower
     except (x) reasonable compensation to officers, employees and directors for
     services rendered to Borrower in the ordinary course of business, (y) up to
     $400,000  from the  $4,000,000  Funding  Date  Advance may be used to pay a
     portion of the Borrower's  parent  company's  overhead  attributable to the
     Borrower's  operations and to make working capital  advances to Affiliates,
     and (z) provided that no Event of Default has occurred,  or will occur as a
     result of such  payment,  and the Borrower has  sufficient  cash flow after
     paying all of the  Borrower's  then  current  expenses  including  its debt
     service to the Lender,  the Borrower may during the term of this Agreement,
     make payments from such excess cash flow in an aggregate amount of not more
     than $400,000 to pay a reasonable  portion of its parent company's overhead
     attributed  to the  Borrower's  operations  and/or to make working  capital
     advances to its Affiliates. In no event shall any proceeds of the Revolving
     Advances  be  used  to  make  any  of the  payments  described  in  Section
     6.9(ii)(z) above.

SECTION 7.        EVENTS OF DEFAULT/REMEDIES

7.1  Events  of  Default.  The  occurrence  of any one or more of the  following
     events shall constitute an "Event of Default":

7.1.1 Payment  Default.  If the Borrower  shall fail to pay any  installment  of
     principal or interest due  hereunder,  or any fee or charge due and payable
     hereunder  or under any  other  Financing  Agreement,  as and when the same
     shall become due and payable; or

7.1.2 Covenants  (No Cure  Period).  If  Borrower  fails in the  performance  or
     observance  of, or a breach shall occur under,  the covenants  contained in
     Sections 5.2, 5.8, and Section VI hereof; or

7.1.3 Covenants  (Cure  Period).   If  Borrower  fails  in  the  performance  or
     observance  of, or a breach shall occur under,  any covenant,  agreement or
     provision   contained   herein   other  than  as  described  in  the  other
     sub-sections  of this Section 7.1,  and such failure  shall  continue for a
     period of thirty (30) days after the  earlier to occur of (i) the  Borrower
     obtaining knowledge of such default and (ii) notice to the Borrower setting
     forth the default or  defaults,  provided  that such thirty (30) day period
     shall not apply in the case of: (A) any  failure to observe or perform  any
     such  covenant  which is not  capable of being  cured at all or within such
     thirty (30) period, or which has been the subject of a prior failure within
     a six (6) month period,  or (B) the  intentional  breach by the Borrower of
     any such covenant;

7.1.4 Representations. If any representation or warranty made by or on behalf of
     the Borrower or any Guarantor,  whether contained in this Agreement, in any
     of the other Financing  Agreements,  or in any other document or instrument
     referred to herein or therein or  delivered in  connection  with any of the
     transactions contemplated herein or therein, shall prove to have been false
     or incorrect in any material respect when made; or

7.1.5 Voluntary Insolvency Proceedings.  If the Borrower or any Guarantor, shall
     (i) apply for or  consent  to or  acquiesce  in the  appointment  of or the
     taking of  possession  by a receiver,  liquidator,  custodian or trustee of
     itself or of all or any part of its  property,  (ii) admit in  writing  its
     inability,  or be generally  unable,  to pay its debts as such debts become
     due, (iii) make a general assignment for the benefit of its creditors, (iv)
     commence a voluntary case under the bankruptcy laws of the United States of
     America (as now or  hereafter  in effect) or any similar  foreign  law, (v)
     file a petition  seeking to take  advantage  of any other law  relating  to
     bankruptcy,  insolvency,  reorganization,  winding-up,  or  composition  or
     adjustment of debts,  (vi) fail to  controvert  in a timely or  appropriate
     manner, or acquiesce in writing to, any petition filed against itself in an
     involuntary  case  under  such  bankruptcy  laws of the  United  States  of
     America,  or any  similar  foreign  law,  or (vii)  take any action for the
     purpose of effecting any of the foregoing; or

7.1.6 Involuntary  Insolvency  Proceedings.   A  proceeding  or  case  shall  be
     commenced,  without  the  application  or  consent of the  Borrower  or any
     Guarantor in any court of competent jurisdiction,  seeking (i) liquidation,
     reorganization,  dissolution,  winding-up or  composition  or adjustment of
     debts of the Borrower or any Guarantor,  (ii) the appointment of a trustee,
     receiver,  liquidator,  custodian  or  the  like  of  the  Borrower  or any
     Guarantor,  or of all or any part of any of  their  assets,  (iii)  similar
     relief under any law relating to  bankruptcy,  insolvency,  reorganization,
     winding-up or  composition or adjustment of debts,  and such  proceeding or
     case shall continue  undismissed,  for a period of forty five (45) days; or
     (iv) any order for relief against the Borrower or any  Guarantor,  shall be
     entered in an involuntary  case under  bankruptcy laws of the United States
     of America, or any similar foreign law, and shall continue  undismissed for
     a period of forty five (45) days; or

7.1.7 Divestiture of Assets. If any order,  judgment, or decree shall be entered
     in any proceeding  requiring the Borrower or any Guarantor to divest itself
     of any material  part of its assets,  and if, within  forty-five  (45) days
     after entry thereof (unless or until enforcement is sooner commenced), such
     order,  judgment  or decree  shall not have been  discharged  or  execution
     thereof  stayed  pending  appeal;  or if,  within  ten (10) days  after the
     expiration  of any  such  stay  (unless  or  until  enforcement  is  sooner
     commenced),  such judgment, order or decree shall not have been discharged;
     or

7.1.8 Judgments and Tax Liens.  If one or more  judgments,  attachments,  or tax
     liens exceeding  $100,000 in the aggregate are entered against the Borrower
     and/or any Guarantor,  or against the  Borrower's or Guarantor's  property,
     and  remain  unpaid,   unstayed  on  appeal,   undischarged,   unbonded  or
     undismissed  for a period of thirty (30) days, or  enforcement  proceedings
     are commenced with respect to any judgment, attachment, or tax lien against
     the Borrower or any Guarantor; or

7.1.9 Other Defaults. If the Borrower or any Guarantor shall (i) fail to pay any
     indebtedness for borrowed money or any interest or premium thereon,  or any
     obligation which is the substantive equivalent thereof (including,  without
     limitation,  obligations under conditional sales contracts,  finance leases
     and the like) when due (whether by scheduled maturity, required prepayment,
     acceleration,  demand or  otherwise)  and such  failure to pay is not cured
     within any applicable grace or cure period contained in such agreement;  or
     (ii) fail to perform or observe any term, covenant or condition on its part
     to be performed or observed  under any agreement or instrument  relating to
     any such  indebtedness,  when required to be performed or observed,  if the
     effect of such failure to perform or observe is to accelerate, or to permit
     the acceleration after the giving of notice or passage of time, or both, of
     such indebtedness, or any such indebtedness shall be declared to be due and
     payable,  or  required to be prepaid  (other than by a regularly  scheduled
     required prepayment), prior to the stated maturity thereof; or

7.1.10  Dissolution;  Suspension  of Business.  If the Borrower or any Guarantor
     shall  suspend or have  suspended  (voluntarily  or  involuntarily  and for
     whatever  reason) the operation of a material portion of its business for a
     period of twenty  (20) days or the  Borrower or any  Guarantor  (other than
     those  Guarantors  which are listed on Schedule  7.1.10 hereto or for which
     the Borrower obtains the prior written consent of the Lender)  dissolves or
     otherwise ceases to exist; or

7.1.11 ERISA.  If any of the following  events shall occur or exist with respect
     to the Borrower or any ERISA  Affiliate under ERISA:  any Reportable  Event
     shall occur;  complete or partial  withdrawal from any  Multiemployer  Plan
     shall take place;  any  Prohibited  Transaction  shall  occur;  a notice of
     intent to terminate a Plan shall be filed,  or a Plan shall be  terminated;
     or circumstances shall exist which constitute grounds entitling the PBGC to
     institute proceedings to terminate a Plan, or the PBGC shall institute such
     proceedings; and in each case above, such event or condition, together with
     all other events or  conditions,  if any, is not cured  within  thirty (30)
     days of notice  thereof to Borrower or subjects  the  Borrower or any ERISA
     Affiliate to any tax penalty, or other liability which in the aggregate may
     exceed $10,000; or

7.1.12 Change in Condition. Any change in the condition or affairs (financial or
     otherwise)  of the  Borrower or any  Guarantor  shall occur  which,  in the
     Lender's  reasonable  opinion,  increases the material risk with respect to
     the  Revolving  Credit  Facility  or impairs any of the  Lender's  security
     therefore; or

7.1.13 Revocation of Guaranty. Any Guarantor revokes or terminates,  or purports
     to revoke or  terminate,  or fails to perform any of the terms,  covenants,
     conditions or provisions of, any Guaranty,  endorsement or other  agreement
     of such party in favor of Lender; or

7.1.14  Indictment.  The  indictment  of the  Borrower or any  Guarantor  by any
     Governmental  Authority  the effect of which  could be to  restrain  in any
     material way the conduct by the Borrower or such  Guarantor of its business
     in the ordinary course; or

7.1.15 Lack of Enforceability;  Invalidity.  Any material provision hereof or of
     any of the other  Financing  Agreements  shall for any  reason  cease to be
     valid,  binding and enforceable with respect to any party hereto or thereto
     (other than Lender) in accordance  with its terms,  or any such party shall
     challenge the enforceability hereof or thereof, or shall assert in writing,
     or take any action or fail to take any action based on the  assertion  that
     any provision hereof or of any of the other Financing Agreements has ceased
     to be or is otherwise not valid,  binding or enforceable in accordance with
     its terms,  or any security  interest  provided for in any of the Financing
     Agreements shall cease to be a valid and perfected first priority  security
     interest in any of the Collateral  purported to be subject  thereto (except
     as otherwise permitted herein or therein); or

7.1.16 Title To Montana Property. The Borrower's affiliate,  Sustainable Systems
     LLC,  shall fail to have closed upon the  purchase of the real and personal
     property set forth in that certain  Installment Sale and Purchase Agreement
     dated  September 30, 2005,  as amended and in effect,  and to have title to
     all such real and personal  property  fully vested in  Sustainable  Systems
     LLC, subject only to a Deed of Trust and security  interest in favor of the
     Lender and such other  encumbrances as are  specifically  set forth in such
     Deed of Trust, all on or before June 30, 2008; or

7.1.17 Cross  Default.  The  occurrence  of any event of default under the other
     Financing  Agreements,  or under any other agreement between the Lender and
     the  Borrower,  or any  agreement  between  the Lender  and any  Guarantor,
     including,  without  limitation,  any default or event of default under the
     Convertible Debentures and Security Purchase Agreements (as those terms are
     defined in the Security Agreement).

7.2  Remedies. Upon the occurrence of any one or more of such Events of Default,
     the Lender may, at its option,  without  presentment  for payment,  demand,
     notice of dishonor or notice of protest or any other  notice,  all of which
     are hereby expressly  waived by the Borrower,  declare the Revolving Credit
     Facility to be due and payable  together  with interest at the default rate
     specified in the instruments or documents  evidencing the Revolving  Credit
     Facility;  provided,  however,  that if such event is an event specified in
     Section  7.1.5  or  7.1.6,   then  the  Revolving   Credit  Facility  shall
     automatically  become due and payable together with interest at the default
     rate specified in the instruments evidencing the Revolving Credit Facility.
     The Lender  shall have all of the rights and  remedies  of a secured  party
     under the Uniform  Commercial Code of the State of New Jersey and under the
     Uniform  Commercial  Code of any other state in which any Collateral may be
     situated,  and,  additionally,  all of the rights and remedies set forth in
     this Agreement and the other Financing Agreements, and in any instrument or
     document referred to herein or therein,  and under any other applicable law
     relating to this Agreement or the other  Financing  Agreements.  The Lender
     may, at its option,  cure any default by the Borrower  under any  agreement
     with a third party which constitutes, or would with notice or lapse of time
     or both constitute,  an Event of Default hereunder,  and may add the amount
     expended in such cure to the Obligations and charge the Borrower's  account
     therefor,  such  amounts to be  repayable  by the  Borrower on demand;  the
     Lender  shall be under no  obligation  to effect such cure and shall not by
     making any payment for the Borrower's account be deemed to have assumed any
     obligation or liability of the Borrower. Notwithstanding the foregoing, the
     Lender  acknowledges  and agrees  that it shall not  exercise  its right to
     sell,  transfer,  or assign the COES License  Agreement unless and until an
     Event of Default has occurred.

SECTION 8.        MISCELLANEOUS

8.1  Expenses. The Borrower, whether or not the transactions contemplated hereby
     are consummated,  shall pay to the Lender, or reimburse the Lender for, all
     out-of-pocket  expenses  incurred  by the  Lender  in  connection  with the
     negotiation,   preparation,   administration,   and   enforcement  of  this
     Agreement,   the  other  Financing   Agreements,   all  other   agreements,
     instruments and documents executed and delivered in connection herewith and
     therewith,  and the  transactions  contemplated  hereunder and  thereunder,
     together with any amendments,  supplements, consents or modifications which
     may be hereafter made or entered into in respect  thereof,  including,  but
     not limited to, filing fees, expenses for searches, and the reasonable fees
     and disbursements of counsel to the Lender.

8.2  Survival of Agreement. All representations and warranties contained in this
     Agreement  or any of the  other  Financing  Agreements  shall  survive  the
     execution  and delivery of this  Agreement and shall be deemed to have been
     made  again to Lender  on the date of each  additional  borrowing  or other
     credit accommodation  hereunder and shall be conclusively  presumed to have
     been  relied  on  by  Lender  regardless  of  any  investigation   made  or
     information  possessed by Lender.  The  representations  and warranties set
     forth   herein   shall  be   cumulative   and  in  addition  to  any  other
     representations  or warranties  which Borrower shall now or hereafter give,
     or cause to be given, to Lender.

8.3  No Waiver;  Cumulative  Remedies.  No failure to exercise,  and no delay in
     exercising on the part of the Lender,  any right,  power or privilege under
     this Agreement or under any of the Financing  Agreements or other documents
     referred to herein or therein shall operate as a waiver thereof;  nor shall
     any single or partial exercise of any right,  power or privilege  hereunder
     or  thereunder  preclude  any  other or  further  exercise  thereof  or the
     exercise of any other right,  power and privilege.  The rights and remedies
     of the Lender  hereunder and under the Financing  Agreements  and under any
     other present and future agreements between the Lender and the Borrower are
     cumulative and not exclusive of any rights or remedies  provided by law, or
     under any of said  Financing  Agreements or agreements  and all such rights
     and remedies may be exercised successively or concurrently.

8.4  Notices and Deliveries. All notices, approvals, consents, requests, demands
     or other  communications  (collectively,  "Communications")  to or upon the
     respective  parties hereto shall be made in writing in one of the following
     ways and shall be deemed to have been given, received and dated: if by hand
     (with receipt acknowledged),  immediately upon delivery; if by express mail
     or any other overnight delivery service, one day after dispatch (unless the
     delivery service  publicly  announces that due to events beyond its control
     deliveries  may not be made on the next day,  then in  accordance  with the
     delivery  schedule  so  announced  by  the  delivery  service);  and  if by
     certified  mail,  return receipt  requested,  four days after mailing.  All
     Communications are to be given to the following addresses (or to such other
     address as any party may designate by Communication in accordance with this
     Section):

                  If to the Lender:

                  YA Global Investments, L.P.
                  101 Hudson Street-Suite 3700
                  Jersey City, New Jersey 07302
                  Attention:  Mr. Troy Rillo

                  with a copy to:

                  Douglas K. Clarke, Esquire
                  Riemer & Braunstein LLP
                  3 Center Plaza
                  Boston, Massachusetts 02108

                  and

                  If to Borrower:
                  c/o GS COES (Yorkville I), LLC
                  One Penn Plaza, Suite 1612
                  New York, New York 10119
                  Attn:  Mr. Kevin Kreisler

                  with a copy to:

                  Sonageri & Fallon, LLC
                  411 Hackensack Plaza
                  Hackensack, New Jersey
                  Attn:  James Sonageri, Esq.

8.5  Amendments  and  Waivers.  Neither  this  Agreement,  nor any of the  other
     Financing Agreements or any other instrument or document referred to herein
     or therein may be changed, waived,  discharged or terminated orally, except
     by an instrument in writing signed by the party against whom enforcement of
     the change, waiver, discharge or termination is sought.

8.6  Applicable  Law.  The  validity,  interpretation  and  enforcement  of this
     Agreement and the other Financing  Agreements (except as otherwise provided
     therein)  and any  dispute  arising  out of the  relationship  between  the
     parties hereto,  whether in contract,  tort, equity or otherwise,  shall be
     governed by the internal  laws of the State of New Jersey but excluding any
     principles  of  conflicts  of law or other rule of law that would cause the
     application of the law of any jurisdiction other than the laws of the State
     of New Jersey.

8.7  Successors.  This Agreement,  the other Financing  Agreements and any other
     document  referred to herein or therein  shall be binding upon and inure to
     the  benefit of and be  enforceable  by the  parties  and their  respective
     heirs,  successors and assigns, except that the Borrower may not assign its
     rights under this Agreement,  the other Financing  Agreements and any other
     document referred to herein or therein without the prior written consent of
     the Lender.

8.8  Partial  Invalidity.  If any  provision  of  this  Agreement  or the  other
     Financing  Agreements  is  held  to  be  invalid  or  unenforceable,   such
     invalidity or  unenforceability  shall not invalidate this Agreement or the
     other Financing  Agreements as a whole but this Agreement or the particular
     Financing  Agreement,  as the case may be,  shall be construed as though it
     did not contain the particular  provision or provisions  held to be invalid
     or  unenforceable  and the rights and  obligations  of the parties shall be
     construed and enforced only to such extent as shall be permitted by law.

8.9  Headings and Word  Meanings.  The headings used herein are for  convenience
     only and do not constitute  matters to be considered in  interpreting  this
     Agreement.  The words "herein,"  "hereinabove,"  "hereof," and "hereunder,"
     when used anywhere in this  Agreement,  refer to this  Agreement as a whole
     and not merely to a  subdivision  in which such  words  appear,  unless the
     context  otherwise  requires.  The singular  shall include the plural,  the
     masculine  gender shall include the feminine and neuter and the disjunctive
     shall include the conjunctive, and vice versa, unless the context otherwise
     requires.

8.10 WAIVER OF JURY TRIAL.  THE PARTIES HERETO HEREBY WAIVE TRIAL BY JURY IN ANY
     LITIGATION IN ANY COURT WITH RESPECT TO, IN CONNECTION WITH, OR ARISING OUT
     OF  THIS  AGREEMENT,  THE  OTHER  FINANCING  AGREEMENTS  OR ANY  AGREEMENT,
     INSTRUMENT  OR  DOCUMENT  DELIVERED  PURSUANT  HERETO  OR  THERETO,  OR THE
     VALIDITY,  PROTECTION,   INTERPRETATION,   ADMINISTRATION,   COLLECTION  OR
     ENFORCEMENT  HEREOF OR THEREOF,  OR ANY OTHER CLAIM OR DISPUTE HEREUNDER OR
     THEREUNDER.  THIS  PROVISION  IS A  MATERIAL  INDUCEMENT  FOR THE  PARTIES'
     ACCEPTANCE OF THIS AGREEMENT.

8.11 JURISDICTION;  SERVICE OF PROCESS.  Borrower and Lender irrevocably consent
     and submit to the non-exclusive  jurisdiction of the Superior Courts of the
     State of New Jersey  sitting in Hudson County,  New Jersey,  and the United
     States District Court for the District of New Jersey sitting in Newark, New
     Jersey,  whichever Lender may elect, and waive any objection based on venue
     or forum non  conveniens  with  respect  to any action  instituted  therein
     arising under this Agreement or any of the other Financing Agreements or in
     any way  connected  with or related or  incidental  to the  dealings of the
     parties hereto in respect of this  Agreement or any of the other  Financing
     Agreements  or the  transactions  related  hereto or thereto,  in each case
     whether now existing or hereafter arising,  and whether in contract,  tort,
     equity or  otherwise,  and agree that any dispute  with respect to any such
     matters  shall be heard only in the courts  described  above  (except  that
     Lender  shall  have the right to bring any  action  or  proceeding  against
     Borrower  or its  property  in the courts of any other  jurisdiction  which
     Lender deems necessary or appropriate in order to realize on the Collateral
     or to otherwise  enforce its rights against  Borrower or its property).  In
     any such  litigation,  the Borrower waives personal service of any summons,
     complaint or other process and agrees that the service  thereof may be made
     by  certified  mail  directed  to it at its address  set forth  herein,  or
     designated  in writing  pursuant to, this  Agreement or in any other manner
     permitted by the rules of either of said courts.

8.12 Indemnity.  Borrower  shall  indemnify and hold Lender,  and its directors,
     agents,  employees  and  attorneys,  harmless  from and against any and all
     losses,  claims,  damages,   liabilities,   costs  or  expenses  (including
     attorneys'  fees and legal  expenses)  imposed on,  incurred by or asserted
     against any of them in connection with any litigation, investigation, claim
     or  proceeding   commenced  or  threatened   related  to  the  negotiation,
     preparation,    execution,    delivery,    enforcement,    performance   or
     administration of this Agreement,  any other Financing  Agreements,  or any
     undertaking or proceeding  related to any of the transactions  contemplated
     hereby or any act,  omission,  event or  transaction  related or  attendant
     thereto,  including  amounts paid in settlement,  court costs, and the fees
     and expenses of counsel.  To the extent that the  undertaking to indemnify,
     pay and hold  harmless  set  forth  in this  Section  may be  unenforceable
     because  it  violates  any law or  public  policy,  Borrower  shall pay the
     maximum portion which it is permitted to pay under applicable law to Lender
     in  satisfaction of indemnified  matters under this Section.  To the extent
     permitted by applicable law, Borrower shall not assert, and Borrower hereby
     waives, any claim against Lender, on any theory of liability,  for special,
     indirect, consequential or punitive damages (as opposed to direct or actual
     damages)  arising  out of, in  connection  with,  or as a result  of,  this
     Agreement,  any of the other  Financing  Agreements or any  undertaking  or
     transaction  contemplated  hereby. No indemnitee referred to above shall be
     liable for any damages arising from the use by unintended recipients of any
     information    or   other    materials    distributed    by   it    through
     telecommunications, electronic or other information transmission systems in
     connection with this Agreement or any of the other Financing  Agreements or
     the transaction  contemplated hereby or thereby. All amounts due under this
     Section shall be payable upon demand. The foregoing indemnity shall survive
     the payment of the  Obligations  and the termination or non-renewal of this
     Agreement.

8.13 Marshalling; Recourse to Security; Payments Set Aside. The Lender shall not
     be under any  obligation  to marshal any assets in favor of the Borrower or
     any other  party or against or in payment of any or all of the  Obligations
     of the Borrower to the Lender  hereunder or under the Financing  Agreements
     or  otherwise.  Recourse to security  shall not be required at any time. To
     the extent that the Borrower makes a payment or payments to the Lender,  or
     the Lender exercises its rights of set-off, and such payment or payments or
     the  proceeds  of  such  set-off  or  any  part  thereof  are  subsequently
     invalidated,  declared to be fraudulent or  preferential,  set aside and/or
     required  to be repaid to a trustee,  receiver or any other party under any
     bankruptcy law, state or federal law, common law or equitable cause,  then,
     to the extent of such recovery,  the obligation or part thereof  originally
     intended to be  satisfied,  and all liens,  rights and  remedies  therefor,
     shall be revived and  continued in full force and effect as if such payment
     had not been made or such set-off had not occurred.

8.14 Entire  Agreement.  This  Agreement,  the other Financing  Agreements,  any
     supplements hereto or thereto,  and any instruments or documents  delivered
     or to be delivered in connection herewith or therewith represent the entire
     agreement  and  understanding  concerning  the  subject  matter  hereof and
     thereof  between  the  parties  hereto,   and  supersede  all  other  prior
     agreements, understandings,  negotiations and discussions, representations,
     warranties,  commitments,  proposals,  offers and contracts  concerning the
     subject  matter  hereof,  whether  oral or  written.  In the  event  of any
     inconsistency  between  the terms of this  Agreement  and any  schedule  or
     exhibit hereto, the terms of this Agreement shall govern.

8.15 Set-off.  In  addition  to any  rights  and  remedies  of the Lender now or
     hereafter  provided by law, the Lender shall have the right,  without prior
     notice to the  Borrower,  any such  notice  being  expressly  waived by the
     Borrower to the extent  permitted by applicable  law, on the occurrence and
     during  the  continuation  of any  Event of  Default  to set off and  apply
     against any Obligation,  whether  matured or immature,  of the Borrower any
     amount owing from the Lender to the  Borrower,  at or at any time after the
     happening  of any such Event of  Default,  and such right of set-off may be
     exercised  by the Lender  against  the  Borrower  or against any trustee in
     bankruptcy,  debtor-in-possession,  assignee for the benefit or  creditors,
     receiver,  or execution,  judgment or  attachment  creditor of any of them,
     notwithstanding  the fact that such  right of  set-off  shall not have been
     exercised by the Lender before the making,  filing or issuance,  or service
     on the Lender, of, or of notice of, any such event or proceeding.

8.16 Waiver of Notices.  Borrower hereby expressly  waives demand,  presentment,
     protest and notice of protest and notice of  dishonor  with  respect to any
     and all instruments and chattel paper, included in or evidencing any of the
     Obligations or the Collateral, and any and all other demands and notices of
     any  kind  or  nature  whatsoever  with  respect  to the  Obligations,  the
     Collateral and this  Agreement,  except such as are expressly  provided for
     herein.  No notice to or demand on Borrower  which Lender may elect to give
     shall  entitle  Borrower  to any other or  further  notice or demand in the
     same, similar or other circumstances.

8.17 Counterparts;  Facsimile  Signature.  This  Agreement  may be  executed  in
     counterparts,  each of which shall  constitute an original but all of which
     when taken  together shall  constitute  but one contract,  and shall become
     effective  when  copies  hereof  which,  when  taken  together,   bear  the
     signatures of each of the parties  hereto shall be delivered to the Lender.
     Delivery of an executed  counterpart  of a signature page to this Agreement
     by  telecopier  shall be  effective  as  delivery  of a  manually  executed
     signature page hereto.

                            [SIGNATURE PAGE FOLLOWS]








     IN WITNESS  WHEREOF,  the parties  have caused  this  Agreement  to be duly
executed and delivered as of the day and year first above written.

                                   GS COES (YORKVILLE I), LLC

                                   By: /s/ Kevin Kreisler
                                      ------------------------------
                                   Name:   Kevin Kreisler
                                   Title:  Chairman and Chief Executive Officer

                                   YA GLOBAL INVESTMENTS, L.P.

                                   By:     Yorkville Advisors, LLC
                                   Its:    Investment Manager

                                   By: /s/ Troy Rillo
                                      ------------------------------
                                   Name:   Troy Rillo
                                   Title:  Senior Managing Director






                                                                   Exhibit A

                                 REVOLVING NOTE
$10,000,000.00                                              January 11, 2008

     GS COES (YORKVILLE I), LLC (the  "Borrower"),  a New York limited liability
company, hereby promises to pay to the order of YA GLOBAL INVESTMENTS, L.P. (the
"Lender"),  at the office of the Lender at 101 Hudson Street, Suite 3700, Jersey
City, New Jersey 07303,  in lawful money of the United States and in immediately
available funds, the principal sum of TEN MILLION DOLLARS ($10,000,000.00),  or,
if less, the unpaid principal amount of all Revolving  Advances made pursuant to
the Credit Agreement (as defined below).


     This  Note  is the  Revolving  Note  referred  to in  that  certain  Credit
Agreement,  dated as of the date hereof, between the Borrower and the Lender (as
such agreement may be further amended from time to time the "Credit Agreement"),
and is subject to prepayment  and its maturity is subject to  acceleration  upon
the terms contained in the Credit Agreement. Capitalized terms used herein shall
be defined as in the Credit Agreement.


     The outstanding  unpaid principal  balance of this Note shall bear interest
at the rate per annum  provided  for in the Credit  Agreement.  Interest on this
Note shall be payable  monthly on the first day of each month  commencing on the
date hereof, and shall be calculated on the basis of a year of 360 days, for the
actual number of days elapsed.


     If any payment on this Note becomes due and payable on a day which is not a
Business Day, such payment shall be extended to the next succeeding day on which
those  offices  are open,  and if the date for any  payment of  principal  is so
extended, interest thereon shall be payable for the extended time.


     The Borrower hereby waives  diligence,  presentment,  protest and notice of
any kind, and assents to extensions of the time of payment,  release,  surrender
or substitution of security, or forbearance or other indulgence, without notice.


     This Note may not be changed, modified or terminated orally, but only by an
agreement  in  writing  signed by the  Borrower  and the  Lender,  or any holder
hereof.


     This Note shall be governed by, and construed in accordance  with, the laws
of the State of New Jersey, and shall be binding upon the successors and assigns
of the  Borrower  and  inure  to the  benefit  of the  Lender,  its  successors,
endorsees  and  assigns.  If any term or  provisions  of this note shall be held
invalid,  illegal  or  unenforceable,  the  validity  of  all  other  terms  and
provisions thereof shall in no way be affected thereby.

                                 GS COES (YORKVILLE I), LLC

                                 By:      ________________________________
                                 Name:    Kevin Kreisler
                                 Title:   Chairman and Chief Executive Officer