Document:

<PAGE>   1
                                                                   EXHIBIT 10.44

         This ASSEMBLY AGENCY AGREEMENT, dated as of May __, 2000 (as amended,
supplemented or otherwise modified from time to time, this "Agreement"), between
[NAME OF TRUST COMPANY], a _____________, not in its individual capacity, but
solely as Trustee of Universal Trust (2000-1) under the Trust Agreement dated
May __, 2000 (the "Trustee"), and UNIVERSAL COMPRESSION, INC., a Texas
corporation ("Universal").

                              PRELIMINARY STATEMENT

         A. Universal has entered and will enter into various contracts in its
individual capacity and not as agent for Trustee ("Buyer") for the purchase,
delivery, construction and successful assembly of each Item of Equipment (each a
"Contract" and collectively, the "Contracts").

         B. Pursuant and subject to the terms and conditions of the
Participation Agreement, dated as of the date hereof among Universal, Universal
Compression Holdings, Inc., [Trust Company], not in its individual capacity but
as Trustee of Universal Trust (2000-1), [Trust Company] in its individual
capacity, Deutsche Bank and the other financial institution that may become
party thereto, as Certificate Holders, Bankers Trust Company, as Administrative
Agent and Collateral Agent, and the Lenders named therein or that may become a
party thereto (the "Participation Agreement"), Universal will collaterally
assign its rights under the Contracts to Trustee to secure Universal's
obligations hereunder.

         C. Subject to the terms and conditions hereof, Trustee desires to
appoint Universal as Trustee's sole and exclusive agent for the delivery,
construction and assembly of all aspects of the Equipment in accordance with
design specifications and all Applicable Laws and Universal desires, for the
benefit of Trustee, to purchase, take delivery of, construct and assemble the
Equipment in each case in accordance with the terms herein set forth.

         NOW, THEREFORE, in consideration of the foregoing, and for other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto covenant and agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

         SECTION 1.1. Defined Terms; Rules of Usage. Capitalized terms used but
not otherwise defined in this Agreement shall have the respective meanings
specified in Appendix A to the Participation Agreement, which Appendix A is made
a part hereof by this reference, and the rules of interpretation set forth in
such Appendix A shall apply to this Agreement.

                                   ARTICLE II.

                            APPOINTMENT OF UNIVERSAL

         SECTION 2.1. Appointment of Universal. (a) Pursuant to and subject to
the terms and conditions set forth herein and in the Participation Agreement and
the other Operative Documents,

                                      -1-
<PAGE>   2

during the Assembly Period, Trustee hereby irrevocably designates and appoints
Universal as its exclusive agent for the following purposes and expressly
authorizes Universal, or any agent or contractor of Universal, and, subject to
Article VI, Universal agrees, for the benefit of Trustee, whether or not a Lease
Event of Default has occurred or is continuing, to take all action necessary or
desirable for the performance and satisfaction of all of Universal's obligations
hereunder, including, without limitation:

         (i)    to acquire and successfully assemble each Item of Equipment
                under and in accordance with the terms of the Contracts, and in
                connection therewith to exercise all rights of Trustee
                concerning supervision and inspection under the Contracts in
                such manner to ensure that each Item of Equipment will be
                constructed, assembled, completed and delivered to Trustee (or
                its designee) in accordance with the Contracts;

         (ii)   to approve or disapprove in a timely manner of all materials
                delivered under the Contracts and all plans and specifications
                as Universal shall deem to be in the best interests of Trustee;

         (iii)  to attend shop tests of each Item of Equipment;

         (iv)   to be present at and attend the Appraisals;

         (v)    to agree to any amendment, modification or change in the
                Contracts, any part of an Item of Equipment or any plans and
                specifications for an Item of Equipment, as Universal deems in
                its sole discretion to be necessary for the completion of each
                of the Items of Equipment; provided, that (x) no such amendment
                or modification shall reasonably be anticipated to --------
                cause the continuation of the construction and assembly of the
                Equipment to be completed after the last day of the Interim Term
                and (y) the aggregate effect of any amendment or modification,
                when taken together with any previous or contemporaneous
                amendments or modifications, will not have a material adverse
                effect on the fair market value, Residual Value or utility of
                the Item of Equipment upon completion;

         (vi)   in the event Trustee shall be required to accept the Item of
                Equipment in accordance with the terms of the Operative
                Documents, to exercise all rights of acceptance of Trustee (or
                its designee) thereunder;

         (vii)  to exercise any and all rights of termination or cancellation of
                any Contract and in the event of any such cancellation or
                termination to take such action in respect of such cancellation;

         (viii) to take all such other actions with respect to the Items of
                Equipment or the Contracts as Universal shall deem to be in the
                best interests of Trustee and of Universal; provided that in no
                event shall Universal institute any litigation for or on behalf
                of Trustee;

                                      -2-
<PAGE>   3

         (ix)   to perform all engineering work and all design and supervisory
                functions relating to the construction and assembly of each
                Items of Equipment;

         (x)    to obtain all necessary permits, authorizations, registrations,
                consents, approvals, waivers, variances, orders, judgments,
                licenses, filings, notice to and declaration of any Governmental
                Entity reasonably required under Applicable Law (including
                environmental laws), in connection with the purchase, delivery,
                construction and assembly of each Item of Equipment in
                accordance with the Contracts and the Operative Documents;

         (xi)   to maintain all books and records with respect to the purchase,
                delivery, construction, assembly and operation and management of
                the Items of Equipment; and

         (xii)  to perform any other acts necessary in connection with the
                identification, construction, assembly and testing of each Item
                of Equipment in accordance with the Contracts.

         (b) Neither Universal nor any of its Affiliates or agents shall enter
into any contract as agent for Trustee of which would impose any liability or
obligation on Trustee.

         (c) Universal shall comply with all obligations of the buyer or user of
service under the Contracts in order to maintain the Contracts in full force and
effect so as to preserve fully the rights of Trustee and Universal thereunder;

         (d) Subject to the terms and conditions of this Agreement and the other
Operative Documents, Universal shall have sole management and control over the
construction means, methods, sequences and procedures with respect to the
permanent construction and assembly of each Item of Equipment.

         SECTION 2.2. Acceptance. Subject to the terms hereof, Universal hereby
unconditionally and irrevocably accepts the designation and appointment as agent
to Trustee in accordance with the terms hereof.

         SECTION 2.3. Term. This Agreement shall commence on the date hereof and
shall terminate on the first to occur of:

                (i)   payment by Universal of the Payment Date Option Amount
         pursuant to Section 28.4 of the Lease Agreement; and

                (ii)  the Basic Term Commencement Date.

Notwithstanding anything contained herein to the contrary, Universal's
obligations under this Agreement shall automatically terminate upon the
termination of this Agreement pursuant to this Section 2.3, other than those
obligations which by the terms of the Operative Documents survive such
termination.

                                      -3-
<PAGE>   4

         SECTION 2.4. Construction Documents; Assignment of Construction
Documents. Universal may execute any of its duties under this Agreement by or
through agents, contractors, employees or attorneys-in-fact. Buyer shall enter
into such agreements in its individual capacity and not as agent for Trustee in
addition to the Contracts, which it deems necessary or desirable for the
purchase, delivery, design, construction, assembly, testing and performance of
the Equipment and performance of all other duties described in Section 2.1
hereof (the "Construction Documents"); provided, however, that no such
delegation shall limit or reduce in any way Universal's duties and obligations
under this Agreement. As security for its obligations hereunder, the Buyer
agrees to assign Trustee all of the Buyer's rights under and interest in such
Construction Documents.

         SECTION 2.5. Covenants of Universal. Universal hereby covenants and
agrees that it will:

         (a) use commercially reasonable efforts to cause construction of the
Equipment to be pursued diligently and without undue interruption in accordance
with the Contracts and the other Construction Documents and, to render the
Equipment fully operational in accordance with the design specification, in
compliance in all material respects with Applicable Laws; and

         (b) maintain adequate records with respect to the application of all
amounts reimbursed to Universal by Trustee or paid directly by Trustee to
manufacturers and vendors of Equipment under the Participation Agreement.

                                  ARTICLE III.

                                PAYMENT OF FUNDS

         SECTION 3.1. Reimbursement of Construction Costs (a) Universal may
request reimbursement of Acquisition Costs in accordance with Section 4.6 of the
Participation Agreement.

                                   ARTICLE IV.

                                  MISCELLANEOUS

         SECTION 4.1. Notices. All notices, consents, directions, approvals,
instructions, requests, demands and other communications required or permitted
by the terms hereof to be given to any Person shall be given in writing in the
manner provided in, shall be sent to the respective addresses set forth in, and
the effectiveness thereof shall be governed by the provisions of, Section 9.4 of
the Participation Agreement.

         SECTION 4.2. Successors and Assigns This Agreement shall be binding
upon and inure to the benefit of Trustee, Universal and their respective legal
representatives, successors and permitted assigns. Universal shall not assign
its rights or obligations hereunder without the prior written consent of Trustee
and the Administrative Agent.

         SECTION 4.3. Governing Law, Jurisdiction and Venue; Waiver of Jury.
This Agreement and the rights and obligations of the parties hereunder and under
the Notes shall be

                                      -4-

<PAGE>   5

construed in accordance with, and be governed by, the law of the State of New
York. The parties hereto hereby agree that all actions or proceedings initiated
by any party hereto arising directly or indirectly out of this Agreement or the
other Operative Documents may be litigated in the Supreme Court of the State of
New York located in New York City or the District Court of the United States
District Court for the Southern District of New York. Each party hereto hereby
expressly submits and consents in advance to such jurisdiction and venue in any
action or proceeding commenced by any party hereto in any of such courts, agrees
that jurisdiction and venue is proper in such courts, and hereby waives personal
service of the summons and complaint, or other process or papers issued therein,
and agrees that such service of the summons and complaint may be made by
registered mail, return receipt requested, addressed to the party hereto being
served at the address for such party set forth in Section 9.4 of the
participation agreement. Universal and Trustee irrevocably designates and
appoints CT Corporation, with offices on the date hereof at [633 Broadway,] New
York, New York 10019, as its designee, appointee and agent to receive, accept
and acknowledge for and on its behalf and in respect of its property service of
any and all legal process, summons, notices and documents which may be served in
any action or proceeding hereunder. If for any reason, such designee, appointee
and agent shall cease to be available to act as such, Universal and Trustee
agree to designate a new designee, appointee and agent in New York City on terms
and for the purposes of this provision satisfactory to administrative agent.
Each party hereto waives any claim that New York City or the Southern District
of New York is an inconvenient forum or an improper forum based on lack of
venue. The choice of forum set forth herein shall not be deemed to preclude the
enforcement by Trustee of any judgment in any other appropriate jurisdiction.
Trustee hereby waives trial by jury in any judicial proceeding involving
directly or indirectly, any matter in any way arising out of, related to, or
connected with this Agreement or the other Operative Documents.

         SECTION 4.4. Counterparts This Agreement may be executed in any number
of separate counterparts and all of said counterparts taken together shall be
deemed to constitute one and the same agreement.

         SECTION 4.5. Severability. Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

         SECTION 4.6. Headings and Table of Contents. The headings and table of
contents contained in this Agreement are for convenience of reference only and
shall not limit or otherwise affect the meaning hereof.

                                      -5-
<PAGE>   6

         IN WITNESS WHEREOF, the parties hereto have caused this Assembly Agency
Agreement to be duly executed and delivered by their duly authorized
representatives as of the day first above written.

                                  [NAME OF TRUST COMPANY],
                                    not in its individual capacity, but solely
                                    as Trustee of Universal Trust (2000-1) under
                                    the Trust Agreement dated as of May __,
                                    2000, as Trustee,

                                  By:
                                      ------------------------------------------
                                      Name:
                                      Title:

                                  UNIVERSAL COMPRESSION, INC.

                                  By:
                                      ------------------------------------------
                                      Name:
                                      Title:<PAGE>   1
                                                                   EXHIBIT 10.45

================================================================================

                                 TRUST AGREEMENT
                      (Universal Compression Trust 2000-1)

                               Dated May ___, 2000

                                     between

                        THE PERSONS LISTED ON SCHEDULE I
                     HERETO OR THAT MAY BECOME PARTY HERETO,
                             as Certificate Holders,

                                       and

                            [NAME OF TRUST COMPANY],
                              not in its individual
                       capacity except as expressly stated
                          herein, but solely as Trustee

================================================================================

<PAGE>   2

                                TABLE OF CONTENTS

<TABLE>
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ARTICLE I

         DEFINITIONS AND INTERPRETATION...........................................................................1

         SECTION 1.1.  Definitions; Rules of Usage................................................................1

ARTICLE II

         THE TRUST ESTATE.........................................................................................1

         SECTION 2.1.  Appointment, Authorization and Direction to Trustee........................................1
         SECTION 2.2.  Declaration and Purpose....................................................................2
         SECTION 2.3.  No Business Trust Formed...................................................................2
         SECTION 2.4.  Domicile and Resident Agent of the Trust...................................................3
         SECTION 2.5.  Title of Trust Property....................................................................3

ARTICLE III

         CERTIFICATES.............................................................................................3

         SECTION 3.1.  Certificates; Procedure for Investment.....................................................3
         SECTION 3.2.  Scheduled Return of Investment.............................................................3
         SECTION 3.3.  Equity Return..............................................................................3
         SECTION 3.4.  Availability Fees..........................................................................3
         SECTION 3.5.  Payment by Trustee.........................................................................3
         SECTION 3.6.  Overdue Rate...............................................................................4
         SECTION 3.7.  Lease Event of Default.....................................................................4
         SECTION 3.8.  Payment from Trust Estate Only.............................................................4
         SECTION 3.9.  Registration, Transfers, Exchanges and Cancellation of  Certificates.......................4
         SECTION 3.10. Mutilated, Destroyed, Lost or Stolen Certificate...........................................6

ARTICLE IV

         COLLECTIONS AND DISTRIBUTIONS............................................................................7

         SECTION 4.1.  Non-Default Payments.......................................................................7
         SECTION 4.2.  Payments after a Lease Event of Default....................................................7
         SECTION 4.3.  Application of Certain Other Payments......................................................7
         SECTION 4.4.  Effect of Sales by Trustee.................................................................8
</TABLE>

                                      (i)

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<TABLE>
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ARTICLE V

         CERTAIN PROVISIONS RESPECTING TRUSTEE....................................................................8

         SECTION 5.1.  Acceptance of Trusts and Duties............................................................8
         SECTION 5.2.  Limitation of Power........................................................................8
         SECTION 5.3.  Action Upon Instructions...................................................................8
         SECTION 5.4.  Certain Duties and Responsibilities of Trustee.............................................9
         SECTION 5.5.  Certain Rights of Trustee..................................................................9
         SECTION 5.6.  NO REPRESENTATIONS OR WARRANTIES AS TO THE EQUIPMENT OR DOCUMENTS.........................11
         SECTION 5.7.  Status of Moneys Received.................................................................12
         SECTION 5.8.  Permitted Activities......................................................................12
         SECTION 5.9.  Resignation or Removal of Trustee.........................................................12
         SECTION 5.10. Estate and Rights of Successor Trustee....................................................13
         SECTION 5.11. Merger or Consolidation of Trustee........................................................13
         SECTION 5.12. Co-Trustees...............................................................................13
         SECTION 5.13. Doing Business in Other Jurisdictions.....................................................14
         SECTION 5.14. Creditors.................................................................................14
         SECTION 5.15. Operations................................................................................14

ARTICLE VI

         TERMINATION OF AND AMENDMENTS TO TRUST..................................................................15

         SECTION 6.1.  Termination...............................................................................15
         SECTION 6.2.  Distribution of Trust Estate Upon Termination.............................................16
         SECTION 6.3.  Amendments................................................................................16
         SECTION 6.4.  Bankruptcy of a Certificate Holder........................................................16
         SECTION 6.5.  Transfers shall not Terminate Trust Agreement.............................................16

ARTICLE VII

         MISCELLANEOUS...........................................................................................17

         SECTION 7.1.  Compensation..............................................................................17
         SECTION 7.2.  Notices 17
         SECTION 7.3.  Severability..............................................................................17
         SECTION 7.4.  Tax Reports...............................................................................17
         SECTION 7.5.  Headings..................................................................................17
         SECTION 7.6.  Successors and Assigns....................................................................17
         SECTION 7.7.  Only Written Waivers......................................................................17
         SECTION 7.8.  Counterparts..............................................................................18
         SECTION 7.9.  Rights in Trust Agreement.................................................................18
         SECTION 7.10. Identification of Trust...................................................................18
         SECTION 7.11. Agreement Not to Petition.................................................................18
</TABLE>

                                      (ii)
<PAGE>   4

<TABLE>
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         SECTION 7.12. GOVERNING LAW; SUBMISSION TO JURISDICTION; VENUE; WAIVER OF JURY TRIAL....................18

         SCHEDULE 1    CERTIFICATE HOLDERS; COMMITMENTS

         EXHIBIT A     FORM OF CERTIFICATE

</TABLE>

                                        (iii)
<PAGE>   5

                  This Trust Agreement (Universal Compression Trust 2000-1)
(this "Trust Agreement") dated as of May ___, 2000 is among each of the Persons
listed on Schedule I hereto together with any permitted successor or assign each
a "Certificate Holder" and collectively, the "Certificate Holders", and [Name of
Trust Company], [a __________ banking corporation], not in its individual
capacity except as expressly provided herein but solely as trustee hereunder,
and any institution that shall act as a successor trustee in accordance with the
terms of Section 5.10 ("Trustee"); and in its individual capacity ("Trust
Company").

                                    ARTICLE I

                         DEFINITIONS AND INTERPRETATION

                  SECTION 1.1. Definitions; Rules of Usage. Capitalized terms
used but not otherwise defined in this Trust Agreement shall have the respective
meanings specified in Appendix A to the Participation Agreement, dated as of May
__, 2000, among Universal Compression, Inc., a ("Lessee"), Universal Compression
Holdings, Inc. ("Guarantor"), Trustee, Trust Company, the Certificate Holders,
Bankers Trust Company, as Administrative Agent (the "Administrative Agent") and
Bankers Trust Company, as Collateral Agent (the "Collateral Agent") and each of
the financial institutions listed on the signature pages thereto that may
thereafter become party thereto as Lenders (the "Lenders"), and the rules of
interpretation set forth in such Appendix A shall apply hereto.

                                   ARTICLE II

                                THE TRUST ESTATE

                  SECTION 2.1. Appointment, Authorization and Direction to
Trustee. The Certificate Holders hereby request that Trust Company act as
trustee of the trust created hereunder (the "Trust"), appoint Trust Company as
Trustee hereunder and authorize and direct Trustee, subject to confirmation by
the Certificate Holders of the satisfaction or waiver of all appropriate
conditions set forth in the Participation Agreement, to:

                  (a) enter into, execute and deliver on the Closing Date and
from time to time thereafter the Operative Documents to which Trustee is to
become a party on such respective dates, including the Participation Agreement,
the Lease Agreement, the Lease Agreement Supplements, the Loan Agreement, the
Notes, the Assembly Agency Agreement and the Financing Statements; and

                  (b) enter into, execute and deliver on the Closing Date the
Certificates in a manner and subject to the terms and conditions provided herein
and in each of the other Operative Documents;

and to do all such things and take all such actions as may be necessary or
convenient to consummate the transactions contemplated by the Operative
Documents and to perform the terms

<PAGE>   6

and conditions of this Trust Agreement, all as contemplated herein or in the
documents referred to herein.

                  Each of the Certificate Holders by making its monies available
on the Closing Date pursuant to Section 4.1 of the Participation Agreement,
agrees that such act shall constitute, without further act, authorization and
direction by such Certificate Holders, to Trustee to take the actions specified
in this Section 2.1.

                  SECTION 2.2.  Declaration and Purpose.

                  (a) Trustee hereby declares, undertakes and agrees that it
will and does receive, take and hold all estate, right, title and interest of
the Trust in and to the Trust Estate for the use and benefit of the Certificate
Holders.

                  (b) The purpose of the Trust is (i) to utilize the proceeds of
the Equity Contributions made available to Trustee by the Certificate Holders
pursuant to Section 4.1 of the Participation Agreement and this Trust Agreement
together with the Loans made available to Trustee by the Lenders pursuant to the
Loan Agreement for the purposes of acquiring the Equipment in accordance with
the terms and subject to the conditions of the Participation Agreement, the
Lease Agreement and the other Operative Documents; (ii) to hold title to the
Equipment and lease the Equipment to Lessee pursuant to the Lease Agreement;
(iii) to preserve the interest of Trustee (as trustee under this Trust
Agreement) in the Trust Estate for the benefit of the Certificate Holders and
engage in activities ancillary and incidental thereto as set forth in the
Operative Documents; (iv) to issue the Certificates to the Certificate Holders
evidencing the Equity Contributions made available to Trustee, (v) to accept the
security including the Lessee Collateral to be executed or provided in its favor
for the benefit of the Trustee, (vi) to enter into the Loan Agreement and, in
connection therewith, execute and deliver the Notes, (vii) to exercise all
remedies available to Trustee or the Certificate Holders under the Operative
Documents; and (viii) to enter into any agreements or to perform any action
incidental to any of the foregoing.

                  (c) The powers of the Trust are limited in accordance with
Section 9.2 of the Participation Agreement.

                  SECTION 2.3. No Business Trust Formed. THE TRUST IS NOT A
BUSINESS TRUST. THE SOLE PURPOSE OF THE TRUST IS TO ACQUIRE AND HOLD TITLE TO
THE TRUST ESTATE AND TO COLLECT AND CONSERVE THE VALUE THEREOF, SUBJECT TO THE
RIGHTS AND BENEFITS OF THE CERTIFICATE HOLDERS, EXCEPT AS EXPRESSLY PROVIDED IN
THE OPERATIVE DOCUMENTS, TRUSTEE MAY NOT TRANSACT BUSINESS OF ANY KIND WITH
RESPECT TO THE TRUST ESTATE, NOR SHALL THIS TRUST AGREEMENT BE DEEMED TO BE, OR
CREATE OR EVIDENCE THE EXISTENCE OF, A CORPORATION DE FACTO OR DE JURE, OR A
MASSACHUSETTS TRUST OR DELAWARE BUSINESS TRUST, OR ANY OTHER TYPE OF BUSINESS
TRUST, ASSOCIATION OR JOINT VENTURE AMONG TRUSTEE, THE CERTIFICATE HOLDERS OR
BETWEEN ANY TWO OF THEM.

                                      -2-
<PAGE>   7

                  SECTION 2.4. Domicile and Resident Agent of the Trust. The
domicile of the Trust will be located at [_______________________]. All bank
accounts of Trustee related to its duties hereunder will be located in the State
of [______________].

                  SECTION 2.5. Title of Trust Property. Legal title to all the
Trust Estate shall be vested at all times in Trustee. The Certificate Holders
shall have no title to or any other interest in specific property in the Trust
Estate; instead, each of the Certificate Holders shall only have a right to
receive payments hereunder with respect to their respective interests.

                                   ARTICLE III

                                  CERTIFICATES

                  SECTION 3.1. Certificates; Procedure for Investment. The
investment made by each Certificate Holder in the Trust Estate and its undivided
interest in the Trust shall be evidenced by a certificate executed by Trustee,
which shall be substantially in the form of Exhibit A hereto (each, a
"Certificate"), each with appropriate insertions, issued by Trustee in the name
of such Certificate Holder and in an amount equal to the Certificate Holder
Commitment of such Certificate Holder. Each Certificate shall (i) be dated the
date of issuance thereof, and (ii) subject to Section 5.1 of the Participation
Agreement, bear yield on the allocable, unpaid Certificate Holder Amount from
time to time outstanding at the Equity Rate.

                  SECTION 3.2. Scheduled Return of Investment. Subject to the
other Operative Documents, each Certificate Holder shall be entitled to receive
on the Casualty Loss Value Payment Date of an Item of Equipment or on the date
an Item of Equipment is sold by Trustee, its Pro Rata Share of the Equity
Component of such Item of Equipment and on the Termination Date of an Item of
Equipment its Pro Rata Share of any Deficiency then due under the Lease
Agreement net of any amounts due the Lenders.

                  SECTION 3.3. Equity Return. (a) Each Certificate Holder shall
be entitled during the Term to a return on the aggregate amount of its unrepaid
Equity Contributions (such unpaid amounts, its "Certificate Holder Amount")
calculated at the Equity Rate, in accordance with the Lease Agreement and the
Participation Agreement.

                  (b)      Equity Return on each Certificate shall be payable in
arrears on each Payment Date.

                  SECTION 3.4. Availability Fees. Each Certificate Holder shall
be entitled during the Commitment Period to an availability fee on the amount of
its Certificate Holder Available Commitment calculated at the Availability Fee
Rate in accordance with the Lease Agreement and Participation Agreement.

                  SECTION 3.5. Payment by Trustee. Subject to Article IV and the
other Operative Documents, Trustee shall, from the Trust Estate, return (a) to
each Certificate Holder, on a Pro Rata Basis based (a) on each Payment Date, the
monies received by Trustee constituting Equity Return (or part thereof) accrued
to such date and Availability Fees (net of any Lender

                                      -3-
<PAGE>   8

Availability Date), (b) on the Casualty Loss Value Payment of an Item of
Equipment or on the date an Item of Equipment is sold by Trustee, the monies
received by Trustee constituting Casualty Loss Value (or part thereof) or sale
proceeds of such Item of Equipment and (c) on the Termination Date, the monies
received by Trustee constituting a Deficiency payment (or part thereof). Each
payment received by a Certificate Holder in accordance with clause (b) or (c)
above shall reduce its Certificate Holder Amount by the amount of such payment.

                  SECTION 3.6. Overdue Rate. If all or a portion of the
Certificate Holder Amount represented by, or accrued Equity Return on, the
Certificates or all or part of a Certificate Holder's Availability Fee shall not
be paid when due (whether at the stated maturity, by acceleration or otherwise),
such overdue amount shall, without limiting the rights of the Certificate
Holders under any Operative Document, bear interest at the Overdue Rate in
effect from time to time, in each case, from the due date until the date paid
(after as well as before judgment).

                  SECTION 3.7. Lease Event of Default. Upon the occurrence and
continuation of a Lease Event of Default, pursuant to which a termination
payment as set forth in Section 24(d) of the Lease Agreement has become due and
payable automatically or with the consent, or at the request, of the
Administrative Agent, such Certificate Holder Amounts evidenced by the
Certificates (with accrued Equity Return thereon) and all other amounts owing to
the Certificate Holders by Trustee under this Trust Agreement, the Certificates
and the other Operative Documents shall immediately become due and payable.

                  SECTION 3.8. Payment from Trust Estate Only. All payments to
be made by Trustee in respect of the Certificates and this Trust Agreement shall
be made only from the income and proceeds from the Trust Estate and only to the
extent that Trustee shall have received sufficient income or proceeds from the
Trust Estate to make such payments in accordance with the terms of Article IV.
The Certificate Holders agree that they will look solely to the income and
proceeds from the Trust Estate to the extent available for distribution to them
as herein provided, and that Trustee is not nor shall it be liable in its
individual capacity to any Certificate Holder for any amount payable hereunder
or under the Certificates except as provided in Section 5.5(c). Notwithstanding
the foregoing, it is expressly understood and agreed that nothing in this
Section 3.8 shall be deemed to (i) release Trustee from liability for its
fraudulent actions or willful misconduct, or (ii) limit or affect the
obligations of the Trust Company in accordance with the express terms of any
Operative Document creating a recourse obligation of the Trust Company.

                  SECTION 3.9. Registration, Transfers, Exchanges and
Cancellation of Certificates.

                  (a) The Administrative Agent shall maintain a register of all
Certificates in accordance with Section 11.8 of the Participation Agreement and
any transfer of interests in a Certificate shall be subject to Sections 11.8 and
12.7 of the Participation Agreement. Subject to Section 12.7 of the
Participation Agreement, a Certificate Holder that intends to transfer a
Certificate, or to exchange Certificate(s) for different denominations shall
surrender such Certificate(s) to Trustee, and shall provide notification of such
surrender to the Administrative

                                      -4-
<PAGE>   9

Agent, together with a written request from such Certificate Holder for the
issuance of one or more new Certificates. Such request shall specify the
denomination or denominations of such new Certificate(s) and, in the case of a
surrender for registration of transfer, the name and address of the Person in
whose name such new Certificate(s) are to be registered. Promptly upon receipt
of such documents by Trustee, Trustee shall execute and deliver to such
Certificate Holder new Certificate(s) in the same aggregate original Certificate
Holder Commitment, and dated the same date, as such surrendered Certificate(s).
Such new Certificate(s) shall be in such denomination or denominations and
registered in such name or names as shall be specified in the written request
from such Certificate Holder. Each Certificate so surrendered shall be
accompanied by a written instrument of transfer duly executed by the Certificate
Holder of such Certificate or its attorney duly authorized in writing. Upon
request, the Trustee shall advise the transferor and transferee Certificate
Holder of: (i) the Certificate Holder Amount and Equity Return on the
Certificate so surrendered that were paid to any holder thereof at any time
before the delivery of the new Certificate; (ii) Equity Return allocable to such
new Certificate on the basis of the respective original Certificate Holder
Amount thereof; and (iii) the date to which Equity Return on the surrendered
Certificate had been paid to any holder thereof at the time of such delivery.
All Certificates issued upon any registration of transfer or exchange of
Certificates shall be valid obligations of Trustee, and shall be entitled to the
same security and benefits under this Trust Agreement as the Certificates
surrendered upon such registration of transfer or exchange. No transfer of any
Certificate shall be valid unless and until such transfer is registered on the
register maintained by the Administrative Agent pursuant to Section 11.8 of the
Participation Agreement.

                  (b) The Trustee shall record in its records the date and
amount of all funds made by a Certificate Holder pursuant to Section 4.1 of the
Participation Agreement and the date and amount of each repayment of any
Certificate Holder Amount to such Certificate Holder; provided, that, failure by
the Trustee to make any such recording or any error therein shall not affect the
obligations of Trustee hereunder or under any Certificate in respect of the
amounts evidenced thereby or the obligations of Lessee under this Agreement or
under the Lease Agreement with respect to the payment of Lease Payments,
Availability Fees and Supplemental Payments; and provided, further, that, in no
event shall the failure of Trustee to make any such endorsement or any error
therein obligate Trustee to pay any amounts in excess of the Certificate Holder
Amount, plus Equity Return on the unpaid Certificate Holder Amount.

                  (c) Each Certificate surrendered to Trustee pursuant to this
Section 3.9 or Section 3.10 hereof shall be canceled by Trustee, and no
Certificate shall be issued in lieu thereof except as expressly permitted by
this Section 3.9 or Section 3.10 hereof.

                  (d) Each Certificate delivered to a Certificate Holder
pursuant to this Section 3.9 or Sections 3.1 or 3.10 of this Trust Agreement
shall be issued without registration of such Certificate under the Securities
Act, as amended, or under any state securities or "blue sky" law, and without
qualification of this Trust Agreement under the Trust Indenture Act of 1939, as
amended. All Certificates issued hereunder shall bear a legend that shall read
substantially as follows:

         THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
         1933, AS AMENDED, OR ANY STATE SECURITIES

                                      -5-
<PAGE>   10

         OR "BLUE SKY" LAW, AND MAY NOT BE TRANSFERRED, SOLD OR OFFERED FOR SALE
         IN VIOLATION OF SUCH ACT OR LAWS.

                  (e) If the Trust Company shall acquire any of the
Certificates, such acquisition shall not operate as a redemption of, or the
satisfaction of, such Certificates unless and until the same shall be delivered
to Trustee for cancellation pursuant to this Trust Agreement.

                  (f) No service charge shall be made for the issuance of
Certificates pursuant to this Section 3.9 or Sections 3.1 or 3.10 of this Trust
Agreement, but Trustee may require from the person requesting the transfer of
such Certificates pursuant to this Section 3.9 or Section 3.10 hereof payment of
a sum sufficient to reimburse Trustee for, or to provide sufficient funds for,
the payment of any tax or other governmental charge in connection therewith or
any charges and expenses connected with such tax or other governmental charge
paid or payable by Trustee. Any Certificate Holder transferring its Certificates
shall also pay or cause the transferee to pay the costs and expenses (including
reasonable counsel fees) incurred by Trustee in connection with such transfer.

                  SECTION 3.10.  Mutilated, Destroyed, Lost or Stolen
Certificate.

                  (a) If any Certificate shall become mutilated, destroyed, lost
or stolen, Trustee shall, upon the written request of the appropriate
Certificate Holder, execute and deliver in replacement thereof and at no charge
to Certificate Holder, a new Certificate in the same form, evidencing the same
interest and dated the same date as the Certificate so mutilated, destroyed,
lost or stolen. If the Certificate being replaced has become mutilated, such
Certificate shall be surrendered to Trustee and a photocopy thereof shall be
furnished to Lessee by Trustee. If the Certificate being replaced has been
destroyed, lost or stolen, the Certificate Holder requesting a replacement
Certificate shall furnish to Trustee and Lessee such reasonable security or
indemnity as may be required by each of them to save them harmless if
Certificate Holder has not furnished them satisfactory evidence of the
destruction, loss or theft of the Certificate; provided that if the Certificate
being replaced is registered in the name of an original Certificate Holder then
the affidavit of a Responsible Officer of such Certificate Holder in form
reasonably satisfactory to Trustee and Lessee, setting forth the fact of
destruction, loss or theft and of ownership of the Certificate at the time
thereof shall be satisfactory evidence and no security or indemnity shall be
required other than the written agreement of such Person, in form reasonably
satisfactory to Trustee, to indemnify and hold harmless Trustee and Lessee from
all risks resulting from the authentication and delivery of a substitute
Certificate. Each Certificate Holder requesting replacement hereunder shall be
responsible for all stamp taxes relating to such replacement.

                  (b) Any duplicate Certificate issued pursuant to this Section
3.10 shall constitute complete and indefeasible evidence of ownership of such
Certificate, as if originally issued, whether or not the destroyed, lost or
stolen Certificate shall be found at any time.

                                      -6-
<PAGE>   11

                                   ARTICLE IV

                          COLLECTIONS AND DISTRIBUTIONS

                  The following provisions shall govern the receipt,
distribution and application of all income and proceeds from the Trust Estate:

                  SECTION 4.1. Non-Default Payments. Provided no Lease Event of
Default has occurred and is continuing and subject to Section 7 of the
Participation Agreement, moneys received by Trustee constituting Lease Payments
or any end of term payment under Section 28 or 29 of the Lease Agreement,
Availability Fees or Supplemental Payments under the Lease Agreement other than
constituting Casualty Loss Value or proceeds of a sale under Section 28.5 of the
Lease Agreement (including the payment of interest on any such overdue amount),
shall be applied on the date received on a pari passu basis in accordance with
each Certificate Holder's Pro Rata Share:

                  (i) first, to the payment of Breakage Costs, if any, (ii)
second, to the payment of accrued but unpaid Availability Fees and Equity Return
on the Certificate Holder Amount of such Certificate Holder at the Overdue Rate
if any, to the date of such payment then due hereunder, (iii) third, to the
payment of accrued but unpaid Availability Fees and Equity Return at the Equity
Rate on the Certificate Holder Amount of such Certificate Holder, if any, to the
date of such repayment then due under the Operative Documents, (iv) fourth, to
the payment of any other amounts then due to such Certificate Holder under the
Operative Documents for accrued Taxes, increased costs under Section 10 of the
Participation Agreement and any other amounts then due other than the
Certificate Holder Amount, (v) fifth, to the payment of the Certificate Holder
Amount and (vi) sixth, any amounts remaining, subject to any amounts owed Lessee
under the Lease, to the Certificate Holders.

                  SECTION 4.2. Payments after a Lease Event of Default. All
payments received and all amounts held or realized by Trustee (including any
amounts realized by Trustee from the exercise of any remedies) after any Lease
Event of Default, and all payments or amounts then held or thereafter received
by Trustee hereunder or under the Operative Documents, shall, so long as such
Lease Event of Default continues and shall not have been waived in writing by
the Majority Lenders, be paid on the date received (i) first, so much of such
payments or amounts held or realized by Trustee as shall be required to
reimburse Trustee for any expenses not reimbursed by Lessee in connection with
the collection or distribution of such amounts held or realized by Trustee or in
connection with the expenses incurred in enforcing its remedies hereunder and
preserving Lessee Collateral including, without limitation, those expenses
contemplated under Section 9.1 of the Participation Agreement, shall be retained
by Trustee and (ii) to each Certificate Holder in accordance with Section 4.1.

                  SECTION 4.3. Application of Certain Other Payments. Any
payments received by any Certificate Holder for which provision as to the
application thereof is made in the Operative Documents but not elsewhere in this
Trust Agreement shall be applied forthwith to the purpose for which such payment
was made in accordance with the terms of the Operative Documents.

                                      -7-
<PAGE>   12

                  SECTION 4.4. Effect of Sales by Trustee. Any sale of all or
any part of the Trust Estate by Trustee permitted hereunder and under the other
Operative Documents shall bind the Certificate Holders and shall be effective
for the benefit of the purchasers thereof and their respective successors and
assigns to divest and transfer all right, title and interest vested in Trustee
and the Certificate Holders hereunder in the property so sold, and no purchaser
shall be required to inquire as to compliance by Trustee with any of the terms
hereof or to see to the application of any purchase money therefor.

                                    ARTICLE V

                      CERTAIN PROVISIONS RESPECTING TRUSTEE

                  SECTION 5.1. Acceptance of Trusts and Duties. Trust Company
accepts the trusts hereby created and agrees to perform the same as Trustee as
herein expressed and, as such, agrees to receive and disburse all moneys
constituting part of the Trust Estate in accordance with the terms hereof.

                  SECTION 5.2. Limitation of Power. Trustee shall have no power,
right, duty or authority to manage, control, possess, use, sell, lease, dispose
of or otherwise deal with the Equipment or any other property at any time
constituting a part of the Trust Estate, or otherwise to take or refrain from
taking any action under or in connection with the Operative Documents, except
(a) to execute and deliver the Operative Documents to which Trustee is to be a
party, (b) to exercise and carry out or cause to be exercised and carried out
the rights, duties and obligations of Trustee hereunder and under the Operative
Documents, (c) to receive, collect and distribute and deal with the sums due
under the Participation Agreement, the Lease Agreement, this Trust Agreement or
other Operative Documents, and the proceeds thereof as provided in the
Participation Agreement, the Lease Agreement, this Trust Agreement or other
Operative Documents (to the extent not payable directly to Certificate Holders
by Lessee and the other Operative Documents), and (d) subject to Section 6.2 of
the Participation Agreement, as expressly provided in written instructions from
the Administrative Agent given pursuant to Section 5.3 of this Trust Agreement.
Other than as expressly provided in this Trust Agreement, Trustee shall not have
the authority to make management decisions relating to the Trust Estate and may
take only ministerial actions without the consent of the Administrative Agent.

                  SECTION 5.3. Action Upon Instructions. Subject to the terms of
Sections 5.4, 5.5 and 8.1 of this Trust Agreement and the Operative Documents,
upon the written instructions at any time and from time to time of the
Administrative Agent with the Majority Certificate Holder's written consent
(provided no Loan Event of Default has occurred and is continuing) or, if the
obligations owing to the Lenders have been satisfied in full, the Majority
Certificate Holders, the Trustee shall take such of the following actions as may
be specified in such instructions:

                  (a) give such notice or direction or exercise such right or
power under the Lease Agreement, as shall be specified in such instructions;

                                      -8-
<PAGE>   13

                  (b) approve as satisfactory to it all matters required by the
terms of any Operative Document to be satisfactory to Trustee;

                  (c) after the expiration of the Term, unless Lessee shall have
purchased all Items of Equipment in accordance with the Lease Agreement, convey
all of Trustee's right, title and interest in and to the Equipment for such
amount, on such terms and to such purchaser or purchasers as shall be designated
in such instructions, or otherwise lease or dispose of the Equipment, on such
terms as shall be designated in such instructions; and

                  (d)      any other action as specified in writing.

                  SECTION 5.4.  Certain Duties and Responsibilities of Trustee.

                  Trustee undertakes to perform such duties and only such duties
as are specifically set forth herein and in the other Operative Documents, and
no implied covenants or obligations shall be read into this Trust Agreement
against Trustee. Trustee agrees that it shall not, nor shall it have a duty to,
manage, control, use, sell, maintain, insure, register, lease, operate, modify,
dispose of or otherwise deal with the Equipment or any other part of the Trust
Estate in any manner whatsoever, except as required by the terms of the
Operative Documents and as otherwise provided herein.

                  SECTION 5.5. Certain Rights of Trustee. Except as otherwise
provided in Section 5.4 of this Trust Agreement:

                  (a) Trustee may rely and shall be protected in acting or
refraining from acting upon any signature, resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order or other
paper or document reasonably believed by it to be genuine and to have been
signed or presented by the proper party or parties;

                  (b) any request, direction or authorization by any party
hereto or to any other Operative Document shall be sufficiently evidenced by a
request, direction or authorization in writing, delivered to Trustee and signed
in the name of such party by the president, any vice president, the treasurer or
the secretary of such party, as the case may be, and any resolution of the Board
of Directors or committee thereof of such party shall be sufficiently evidenced
by a copy of such resolution certified by the secretary or an assistant
secretary of such party, as the case may be, to have been duly adopted and to be
in full force and effect on the date of such certification, and delivered to
Trustee;

                  (c) whenever in the administration of this Trust Agreement
Trustee shall deem it desirable that a matter be proved or established prior to
taking, suffering or omitting any action hereunder, Trustee may in good faith
rely upon a certificate in writing, delivered to Trustee and signed by the
president, any vice president, any assistant vice president, any managing
director, the treasurer, any assistant treasurer, the secretary or any assistant
secretary of a Certificate Holder or the Administrative Agent;

                  (d) Trustee may exercise its powers and perform its duties by
or through such attorneys, agents and servants as it shall appoint; and it shall
be entitled to the advice of counsel

                                      -9-
<PAGE>   14

and shall be protected by the advice of such counsel in anything done or omitted
to be done in accordance with such advice (provided that such advice pertains to
such matters as Trustee may reasonably presume to be within the scope of such
counsel's area of expertise);

                  (e) Trustee shall not be under any obligation to exercise any
of the rights or powers vested in it by this Trust Agreement at the request or
direction of the Majority Certificate Holders or the Administrative Agent,
unless Trustee shall have received reasonable security or indemnity against the
costs, expenses (including reasonable fees and expenses of its legal counsel)
and liabilities which may be incurred by it in compliance with such request or
direction;

                  (f) provided no Responsible Officer has Actual Knowledge of
the inaccuracy thereof, Trustee shall not be bound to make any investigation
into the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent or other paper
or document, but Trustee, in its discretion, may make such further inquiry or
investigation into such facts or matters as it may see fit, and, if Trustee
shall determine to make such further inquiry or investigation, it shall be
entitled to examine the books and records of Lessee related to the Equipment to
reasonably determine whether Lessee is in compliance with the terms and
conditions of the Lease Agreement and to examine the Equipment by agent or
attorney, all upon the terms and conditions contained in the Participation
Agreement, the Lease Agreement and the other Operative Documents;

                  (g) without limiting the generality of Section 5.4, Trustee
shall not have any duty (i) to see to any recording or filing of the Operative
Documents or any Uniform Commercial Code financing statements or to see to the
continuation or maintenance of any such recording or filing, (ii) to see to any
insurance on the Equipment or to effect or maintain any such insurance, whether
or not Lessee shall be in default with respect thereto, other than to promptly
forward to the Certificate Holders copies of all certificates, reports and other
written information which it receives from Lessee pursuant to the requirements
of the Lease Agreement, the Participation Agreement and other Operative
Documents (unless the Certificate Holders are to receive such certificates,
reports and other written information directly from Lessee or the Administrative
Agent), (iii) subject to Section 6.1(f) of the Participation Agreement to see to
the payment or discharge of any tax, assessment or other governmental charge or
any Lien owing with respect to, assessed or levied against any part of the Trust
Estate, (iv) to confirm or verify any financial statements of Lessee, or (v) to
inspect the Equipment or ascertain or inquire as to the performance or
observance of any of Lessee's covenants under the Operative Documents;

                  (h) No provision hereof shall be construed to relieve Trust
Company in its individual capacity or Trustee of liability for its gross
negligence or willful misconduct or its negligence in the receiving, handling or
disbursing of funds, it being understood that, without limiting the foregoing:

                  (i) Trust Company shall not be liable for any error of
         judgment made in good faith by a Responsible Officer of Trustee, unless
         it shall be proved that Trust Company was grossly negligent;

                                      -10-
<PAGE>   15

                  (ii) Trust Company shall not be liable with respect to any
         action taken or omitted to be taken by it in good faith in accordance
         with the direction of the Administrative Agent pursuant to the express
         provisions hereof;

                  (iii) no provision hereof shall require Trust Company to
         expend or risk its own funds in the performance of any of its duties
         hereunder or under any of the other Operative Documents, or in the
         exercise of any of its rights or powers;

                  (iv) Trust Company shall not be personally responsible for the
         due execution hereof by any Certificate Holders;

                  (v) except as expressly provided in this Trust Agreement, in
         accepting the Trust created hereby, Trustee acts solely as trustee and
         not in its individual capacity, and all persons having any claim
         against Trustee by reason of the transactions contemplated by this
         Trust Agreement shall, other than as expressly provided in this Trust
         Agreement and the other Operative Documents, look solely to the Trust
         Estate for payment or satisfaction thereof; and

                  (vi) Trust Company shall be liable for (A) any taxes on, with
         respect to or measured by any amounts paid to it as compensation for
         services or otherwise under the Operative Documents, (B) acts or
         omissions not related to the transactions contemplated by the Operative
         Documents, and (C) the inaccuracy of representations and warranties
         made by Trust Company in the Participation Agreement, the Lease
         Agreement or any certificate or document delivered pursuant thereto.

                  (i) Trustee shall not be required to take any action hereunder
or under the Operative Documents, nor shall any other provision of this Trust
Agreement or any Operative Document be deemed to impose a duty on Trustee to
take any action, if Trustee shall determine, or shall have been advised by
counsel, that such action is likely to result in personal liability or is
contrary to Applicable Law or the Operative Documents; and

                  (j) Whether or not therein expressly so provided, every
provision of this Trust Agreement relating to the conduct or affecting the
liability of or affording protection to Trust Company or Trustee shall be
subject to the provisions of this Section 5.5.

                  SECTION 5.6. NO REPRESENTATIONS OR WARRANTIES AS TO THE
EQUIPMENT OR DOCUMENTS. NEITHER TRUSTEE NOR TRUST COMPANY IS A BUILDER,
DEVELOPER OR MANUFACTURER OF THE EQUIPMENT OR A DEALER IN SIMILAR SITES AND
NEITHER OF THEM HAS INSPECTED THE EQUIPMENT PRIOR TO DELIVERY TO AND ACCEPTANCE
BY LESSEE. NEITHER TRUSTEE NOR TRUST COMPANY HAS MADE NOR DOES EITHER OF THEM
MAKE (A) ANY REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED, AS TO ANY
ENVIRONMENTAL MATTER OR CONDITION, VALUE, DESIGN, OPERATION, CONDITION, QUALITY,
DURABILITY, SUITABILITY, MERCHANTABILITY OR FITNESS FOR USE OR FITNESS FOR A
PARTICULAR PURPOSE, ABSENCE OF LATENT OR OTHER DEFECTS WHETHER OR NOT
DISCOVERABLE, ABSENCE OF

                                      -11-
<PAGE>   16

ANY INFRINGEMENT OF ANY PATENT, TRADEMARK OR COPYRIGHT, OR ANY OTHER WARRANTY
WHATSOEVER, EXPRESS OR IMPLIED, WITH RESPECT TO THE EQUIPMENT, OR AS TO TITLE
THERETO, OR (B) ANY REPRESENTATION OR WARRANTY AS TO THE VALIDITY, LEGALITY OR
ENFORCEABILITY OF THE OPERATIVE DOCUMENTS (OTHER THAN AS TO THIS TRUST AGREEMENT
AGAINST TRUST COMPANY), OR AS TO THE CORRECTNESS OF ANY STATEMENT CONTAINED IN
ANY THEREOF, EXCEPT AS SET FORTH IN SECTIONS 2.4, 2.5, 2.6, 2.7, 6.1 AND 6.2 OF
THE PARTICIPATION AGREEMENT.

                  SECTION 5.7. Status of Moneys Received. All moneys received by
Trustee under or pursuant to any provision of this Trust Agreement shall
constitute trust funds for the purpose for which they were paid or are held, but
need not be segregated in any manner from any other moneys and may be deposited
by Trustee under such conditions as may be prescribed or permitted by Applicable
Laws for trust funds, or, may be invested at the direction of the Majority
Certificate Holders.

                  SECTION 5.8. Permitted Activities. Trust Company or any
corporation in or with which Trust Company may be interested or affiliated or
any officer or director of any such corporation may acquire and hold
Certificates hereunder (subject to the restrictions of Section 5.4 of the
Participation Agreement), and have commercial relations and otherwise deal with
Lessee or with any other corporation having relations with Lessee to the full
extent permitted by Applicable Law.

                  SECTION 5.9. Resignation or Removal of Trustee. Trustee or any
successor thereto may resign at any time without cause by giving at least sixty
(60) days' prior written notice to each Certificate Holder, the Administrative
Agent and Lessee, and the Administrative Agent with the Majority Certificate
Holders' written consent (provided no Loan Event of Default has occurred and is
continuing) or, if the obligations owing to the Lenders have been satisfied in
full, the Majority Certificate Holders may at any time remove Trustee without
cause by an instrument in writing delivered to Trustee, Lessee, each Certificate
Holder and Administrative Agent, such resignation or removal to be effective on
the date on which a successor trustee is appointed hereunder. The Majority
Certificate Holders and the Administrative Agent may, at any time upon 30 days'
prior written notice to Trust Company and Lessee by an instrument in writing,
appoint a successor trustee, provided, however, that a successor trustee shall
be a bank, trust company or association organized under the laws of the United
States of America or any state thereof, shall have a combined capital and
surplus of at least $500,000,000 and shall have agreed to act as Trustee, and
provided further that any successor trustee shall be subject to approval by
Lessee, which approval shall not be unreasonably withheld or delayed (except
that, if a Lease Event of Default shall have occurred and be continuing, Lessee
shall have no right to approve a successor trustee). If the Majority Certificate
Holders and the Administrative Agent shall not have appointed a successor
trustee within thirty (30) days after the giving of notice of such resignation
or removal, Trustee may apply to any court of competent jurisdiction to appoint
a successor trustee to act until such time, if any, as a successor or successors
shall have been appointed by the Majority Certificate Holders and the
Administrative Agent as above provided. Any successor trustee so appointed by
such court shall immediately and without further act be superseded by a
successor trustee appointed by the Majority Certificate Holders and the

                                      -12-
<PAGE>   17

Administrative Agent within one (1) year from the date of the appointment by
such court. In the event such a successor trustee shall be appointed, a Bill of
Sale evidencing the transfer of the interest in the Equipment to and a written
instrument evidencing the assumption of the obligations under the Loan Agreement
by the successor trustee as Trustee, along with any additional documentation
required (including Financing Statements) shall be executed. Such documents
shall be held by the successor trustee and shall be provided to the other
parties to the Operative Documents upon request.

                  SECTION 5.10. Estate and Rights of Successor Trustee. Any
successor trustee shall execute and deliver to the predecessor Trustee an
instrument accepting such appointment, and thereupon each successor trustee,
without further act, shall become vested with all the estates, properties,
rights, powers, duties, trusts and obligations of the predecessor trustee in the
trusts hereunder with like effect as if originally named as Trustee herein, but
nevertheless upon the written request of such successor trustee, such
predecessor trustee shall execute and deliver an instrument transferring to such
successor trustee, upon the trusts herein expressed, all the estates,
properties, rights, powers and trusts of such predecessor trustee, and such
predecessor trustee shall duly assign, transfer, deliver and pay over to such
successor trustee any property or moneys then held by such predecessor trustee
upon the trusts herein expressed.

                  SECTION 5.11. Merger or Consolidation of Trustee. Any
corporation into which Trustee may be merged or with which it may be
consolidated, or any corporation resulting from any merger or consolidation to
which Trustee shall be a party, or any corporation to which substantially all of
the corporate trust business of Trustee may be transferred, shall be a successor
trustee under this Trust Agreement without further act. In the event such a
successor trustee shall be formed, a Bill of Sale evidencing the transfer of the
interest in the Equipment to and a written instrument evidencing the assumption
of the obligations under the Loan and Security Agreement by such successor
trustee, as Trustee, along with any additional documentation required (including
Financing Statements). Such documents shall be held by the successor trustee and
shall be provided to Lessee upon request.

                  SECTION 5.12. Co-Trustees. At any time, for the purpose of
meeting any legal requirements of any jurisdiction in connection with the
transactions contemplated by this Trust Agreement, Trustee shall have the power,
and shall execute and deliver all instruments, to appoint one or more Persons
approved by the Administrative Agent with the Majority Certificate Holders'
written consent (provided no Loan Event of Default has occurred and is
continuing) or, if the obligations owing to the Lenders have been satisfied in
full, the Majority Certificate Holders, to act as co-trustee, or co-trustees,
jointly with Trustee, or separate trustee or separate trustees, of all or any
part of the Trust Estate, and to vest in such Person or Persons, in such
capacity, such title to the Trust Estate or any part thereof, and such rights,
powers, duties, trusts or obligations as the Administrative Agent with the
Majority Certificate Holders' written consent (provided no Loan Event of Default
has occurred and is continuing) or, if the obligations owing to the Lenders have
been satisfied in full, the Majority Certificate Holders and Trustee may
consider necessary or desirable. The Administrative Agent and Lessee hereby
agree that any employee of the Trust Company shall be acceptable, without any
further consent hereunder, as Co-Trustee. If the Majority Certificate Holders,
the Administrative Agent and (if no Lease Default or Lease Event of Default has
occurred and is continuing) Lessee shall not have joined in

                                      -13-
<PAGE>   18

such appointment within fifteen (15) days after the receipt by them of a request
to do so, Trustee alone shall have power to make such appointment. Trustee shall
not be liable for any act or omission of any co-trustee or separate trustee
appointed under this Section 5.12.

                  SECTION 5.13. Doing Business in Other Jurisdictions.
Notwithstanding anything contained herein to the contrary, Trustee shall not be
required to take any action in any jurisdiction, other than in the State of
[        ] and other than in any other jurisdiction in which Trustee is
authorized to do business, if solely as a result of such action, even after the
appointment of a co-trustee pursuant to Section 5.12 hereof, (i) the taking of
such action would require the consent, approval, authorization or order of or
the giving of notice to, or the registration with or the taking of any other
action in respect of, any Governmental Authority of any jurisdiction, other than
the State of [       ] or any other jurisdiction in which Trustee is authorized
to do business; (ii) Trustee would incur any fee, tax or other governmental
charge under the laws of any jurisdiction or any political subdivision thereof
in existence on the date hereof, other than the State of [          ] or any
other jurisdiction in which Trustee is authorized to do business; or (iii)
Trustee would become subject to personal jurisdiction in any jurisdiction, other
than the State of [          ] or any other jurisdiction in which Trustee is
authorized to do business, for causes of action arising from acts unrelated to
the consummation of the transactions contemplated by the Operative Documents by
Trustee; provided, that if pursuant to this Section 5.13 Trustee shall not be
required to take an action, Trustee shall promptly appoint an additional trustee
pursuant to Section 5.12 hereof to proceed with such action.

                  SECTION 5.14. Creditors. No creditor of any Certificate Holder
shall have any claim against the Trust Estate for obligations of such
Certificate Holder.]

                  SECTION 5.15. Operations. The operations of Trustee will be
conducted in accordance with the following standards:

                  (a) Trustee will act solely in its own name or through any
co-trustee or other agents selected in accordance with this Trust Agreement;

                  (b) Trustee's funds and assets, including all bank accounts,
shall at all times be maintained separately from those of the Certificate
Holders or any Affiliate of any Certificate Holder;

                  (c) Trustee shall maintain complete and correct books and
records of account and shall prepare, or cause to be prepared, financial
statements in accordance with generally accepted accounting principles
separately stating Trustee's income, assets and liabilities and disclosing in
each case that such items are separate from those of any of the Certificate
Holders or any of their Affiliates, which financial statements are and will be
subject to audit by independent accountants; to the extent such statements are
consolidated with the financial statements of any of the Certificate Holders,
such consolidated statements will contain notations noting the separate legal
existence and the separate financial condition of Trustee;

                  (d) Trustee shall conduct its business at its office and will
use stationery and other business forms of Trustee and not those of the
Certificate Holders or any of their Affiliates,

                                      -14-
<PAGE>   19

and will use its best efforts to avoid the appearance (A) of conducting business
on behalf of the Certificate Holders or any Affiliate thereof or (B) that the
assets in the Trust Estate are available to pay the creditors of the Certificate
Holders or any Affiliate thereof;

                  (e) Trustee's on-going fees and expenses shall be paid by
Lessee pursuant to Section 9.1 of the Participation Agreement;

                  (f) Trustee shall not hold itself out as being liable for the
debts of the Certificate Holders or any Affiliate thereof;

                  (g) Trustee shall not engage in any transaction with the
Certificate Holders or any Affiliate thereof, except as required by, provided in
or permitted by, this Trust Agreement or the Operative Documents;

                  (h) the Certificate Holders shall exercise their discretion
hereunder in an arm's-length manner;

                  (i) to the extent any consultant, independent contractor or
agent of Trustee is also an employee, consultant, independent contractor or
agent of the Certificate Holders or the Administrative Agent, Trustee, the
Certificate Holders and the Administrative Agent shall allocate among themselves
on a reasonable basis the services and attendant salaries of shared employees,
consultants, independent contractor and agents;

                  (j) all legal formalities of Trustee will be observed and
maintained;

                  (k) Trustee shall not guarantee any indebtedness of the
Certificate Holders; and

                  (l) Trustee shall not institute proceedings to have itself
adjudicated as bankrupt or insolvent, or consent to or acquiesce in the
institution of bankruptcy or insolvency proceedings against it, or seek or
consent to or acquiesce in the entry of any order for relief or the appointment
of a receiver, trustee or other similar official for it or for any substantial
part of its property, or seek liquidation, winding up, reorganization,
arrangement, adjustment, protection, relief or composition of it or its debts
under any law relating to bankruptcy, insolvency or reorganization or relief of
debtors, or make any general assignment for the benefit of its creditors.

                                   ARTICLE VI

                     TERMINATION OF AND AMENDMENTS TO TRUST

                  SECTION 6.1. Termination. The Trust created and provided for
hereby shall cease and be terminated in any one of the following events,
whichever shall first occur:

                  (a) if the Certificate Holders shall by notice in writing to
Trustee and Lessee revoke and terminate the Trust on and as of a date stated in
such notice, which date shall not be less than ten (10) nor more than thirty
(30) days from the date of mailing such notice, then on the

                                      -15-
<PAGE>   20

date specified in such notice, the Trust created and provided for hereby shall
cease and terminate, provided, however, that this Trust shall not be subject to
revocation or termination by the Certificate Holders prior to the payment in
full and discharge of all indebtedness due and payable under the Loan Agreement,
and the termination of the Operative Documents and the release of the Liens
granted thereby; or

                  (b) the sale or other final disposition by Trustee of all
property constituting the Trust Estate and the final disposition by Trustee of
all moneys or other property or proceeds constituting part of the Trust Estate
in accordance with the terms hereof and with the other Operative Documents; or

                  (c) 110 years after the date hereof.

                  SECTION 6.2. Distribution of Trust Estate Upon Termination.
Upon any termination of this Trust pursuant to the provisions of Section 6.1 of
this Trust Agreement, Trustee shall convey the Trust Estate to such purchaser or
purchasers thereof or other Person entitled thereto and for such amount and on
such terms as shall be specified in written instructions from the Administrative
Agent with the Majority Certificate Holders' written consent (provided no Loan
Event of Default has occurred and is continuing) or, if the obligations owing to
the Lenders have been satisfied in full, the Majority Certificate Holders
delivered to Trustee prior to the date of termination; provided, that (a) if at
the time of any termination the Lease Agreement remains in force and effect,
then the Trust Estate shall be, subject to the Lease Agreement, sold as a unit
and not in parcels, and (b) in the event such written instructions are not
delivered to Trustee on or before the date of termination, Trustee shall
transfer title to the Trust Estate at the direction of the Administrative Agent
with the Majority Certificate Holders' written consent (provided no Loan Event
of Default has occurred and is continuing) or, if the obligations owing to the
Lenders have been satisfied in full, the Majority Certificate Holders. Upon
making such transfer or sale, Trustee shall be entitled to immediate receipt of
any sums due and owing to Trustee for expenses (including reasonable attorneys'
fees and expenses) incurred pursuant hereto or as compensation for services
rendered hereunder and not theretofore paid, and Trustee shall be discharged and
free of any further liability hereunder, subject to Section 5.5(c) of this Trust
Agreement.

                  SECTION 6.3. Amendments. This Trust Agreement and the terms
herein may only be amended, supplemented, waived or modified in accordance with
Section 12.2 of the Participation Agreement.

                  SECTION 6.4. Bankruptcy of a Certificate Holder. The
bankruptcy, insolvency or other similar incapacity of any Certificate Holder
shall not (i) operate to terminate this Trust Agreement, (ii) entitle the
Certificate Holder's legal representatives to claim an accounting or to take any
action in any court for a partition or winding up of the Trust Estate or (iii)
otherwise affect the rights, obligations and liabilities of the parties hereto.

                  SECTION 6.5. Transfers shall not Terminate Trust Agreement. No
transfer, by operation of law or otherwise, of any right, title or interest of
any Certificate Holder in and to the Trust Estate shall operate to terminate
this Trust Agreement or the Trust created hereunder or

                                      -16-
<PAGE>   21

entitle any successors or transferees of any Certificate Holder to an accounting
or to the transfer of legal title to any part of the estate.

                                   ARTICLE VII

                                  MISCELLANEOUS

                  SECTION 7.1. Compensation. Trustee shall receive reasonable
compensation for its services hereunder from Lessee and shall be reimbursed by
Lessee for Trustee's reasonable fees and expenses (including the disbursements
and reasonable fees of counsel in accordance with Section 12.1 of the
Participation Agreement). Trustee's fees shall be separately agreed upon by
Lessee and Trustee. If a Lease Event of Default exists and Trustee shall be
required pursuant to the provisions of this Trust Agreement to take any action
in connection therewith, the Certificate Holders shall reimburse it for expenses
it may incur in relation to taking such action (in accordance with the Operative
Documents) (including the disbursements and reasonable fees of counsel to the
extent not reimbursed by Lessee).

                  SECTION 7.2. Notices. Unless otherwise provided herein, all
notices, requests, demands, consents, instructions or other communications to or
upon the respective parties to this Agreement shall be given in accordance with
Section 12.1 of the Participation Agreement.

                  SECTION 7.3. Severability. Any provision of this Trust
Agreement which is prohibited or unenforceable in any jurisdiction shall, as to
such jurisdiction, be ineffective to the extent of such prohibition on
unenforceability without invalidating the remaining provisions hereof, and any
such prohibition or unenforceability in any jurisdiction shall not invalidate or
render unenforceable such provisions in any other jurisdiction.

                  SECTION 7.4. Tax Reports. In the event any tax report or tax
return is required to be made by Trustee with respect to the Trust Estate and
Lessee is not required to prepare and file the same pursuant to the
Participation Agreement or the Lease Agreement, each Certificate Holder will
prepare such tax report or return in respect of its interest in the Trust Estate
and deliver a copy thereof to Trustee. Trustee agrees to forward promptly to
each Certificate Holder any communications with respect to taxes pertaining to
the Trust Estate which are received by Trustee from tax authorities or from
Lessee, along with any other information reasonably requested by a Certificate
Holder as being necessary in order to complete such return.

                  SECTION 7.5. Headings. The headings of the various Sections
herein are for convenience of reference only and shall not define or limit any
of the terms or provisions hereof.

                  SECTION 7.6. Successors and Assigns. All covenants and
agreements contained herein shall be binding upon, and inure to the benefit of,
the parties hereto and their respective successors and assigns.

                  SECTION 7.7. Only Written Waivers. No term or provision of
this Trust Agreement may be changed, waived, discharged or terminated orally,
but only by an instrument in writing signed by the party or other person against
whom enforcement of the change, waiver,

                                      -17-
<PAGE>   22

discharge or termination is sought; and any waiver of the terms hereof shall be
effective only in the specific instance and for the specific purpose given and
only so long as such waiver is not inconsistent with the Operative Documents.

                  SECTION 7.8. Counterparts. This instrument may be
simultaneously executed in any number of counterparts, each of which when so
executed shall be deemed to be an original, and such counterparts together shall
constitute and be one and the same instrument.

                  SECTION 7.9. Rights in Trust Agreement. Except as expressly
provided to the contrary in the Operative Documents, nothing in this Trust
Agreement, whether express or implied, shall be construed to give any Person
other than Trust Company, Trustee, and each Certificate Holder and their
respective successors and assigns, any right, remedy or claim under or in
respect of this Trust Agreement.

                  SECTION 7.10. Identification of Trust. The Trust created
hereunder may for convenience be referred to as the Universal Compression Trust
(2000-1).

                  SECTION 7.11. Agreement Not to Petition. Each of Trustee, the
Trust Company, and each Certificate Holder agrees that, until at least 367 days
after the Trust has been terminated in accordance with Article VII, it shall not
file, or join in the filing of, a petition against Trustee under any bankruptcy,
reorganization, arrangement, insolvency, liquidation or other similar law
(including the Bankruptcy Code) (collectively, "Bankruptcy Laws") or otherwise
join in the commencement of any proceedings against Trustee under any Bankruptcy
Law.

                  SECTION 7.12. GOVERNING LAW; SUBMISSION TO JURISDICTION;
VENUE; WAIVER OF JURY TRIAL. (a) THIS TRUST AGREEMENT AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND
BE GOVERNED BY THE LAW OF THE STATE OF [_______]. ANY LEGAL ACTION OR PROCEEDING
WITH RESPECT TO THIS AGREEMENT OR ANY OTHER OPERATIVE DOCUMENT MAY BE BROUGHT IN
THE COURTS OF THE STATE OF NEW YORK OR OF THE UNITED STATES FOR THE SOUTHERN
DISTRICT OF NEW YORK, AND BY EXECUTION AND DELIVERY OF THIS AGREEMENT. EACH OF
TRUST COMPANY, TRUSTEE AND EACH CERTIFICATE HOLDER HEREBY IRREVOCABLY ACCEPTS
FOR ITSELF AND IN RESPECT OF ITS PROPERTY, GENERALLY AND UNCONDITIONALLY, THE
JURISDICTION OF THE AFORESAID COURTS. EACH OF TRUST COMPANY, TRUSTEE AND EACH
CERTIFICATE HOLDER FURTHER IRREVOCABLY CONSENTS TO THE SERVICE OF PROCESS OUT OF
ANY OF THE AFOREMENTIONED COURTS IN ANY SUCH ACTION OR PROCEEDING BY THE MAILING
COPIES THEREOF BY REGISTERED OR CERTIFIED MAIL, POSTAGE PREPAID, TO IT AT ITS
ADDRESS SET FORTH IN SECTION 12.4 OF THE PARTICIPATION AGREEMENT, SUCH SERVICE
TO BECOME EFFECTIVE 30 DAYS AFTER SUCH MAILING. NOTHING HEREIN SHALL AFFECT THE
RIGHT OF ANY PARTY UNDER THIS TRUST AGREEMENT, TO SERVE PROCESS IN ANY OTHER
MANNER PERMITTED BY LAW OR TO COMMENCE LEGAL PROCEEDINGS OR

                                      -18-
<PAGE>   23

OTHERWISE PROCEED AGAINST LESSEE, GUARANTOR OR LESSOR IN ANY OTHER JURISDICTION.

                  (b) EACH OF TRUST COMPANY, TRUSTEE AND EACH CERTIFICATE HOLDER
HEREBY IRREVOCABLY WAIVES ANY OBJECTION WHICH IT MAY NOW OR HEREAFTER HAVE TO
THE LAYING OF VENUE OF ANY OF THE AFORESAID ACTIONS OR PROCEEDINGS ARISING OUT
OF OR IN CONNECTION WITH THIS TRUST AGREEMENT OR ANY OTHER OPERATIVE DOCUMENT
BROUGHT IN THE COURTS REFERRED TO IN CLAUSE (a) ABOVE AND HEREBY FURTHER
IRREVOCABLY WAIVES AND AGREES NOT TO PLEAD OR CLAIM IN ANY SUCH COURT THAT ANY
SUCH ACTION OR PROCEEDING BROUGHT IN ANY SUCH COURT HAS BEEN BROUGHT IN AN
INCONVENIENT FORUM.

                  (c) EACH OF THE PARTIES TO THIS TRUST AGREEMENT HEREBY
IRREVOCABLY WAIVES ALL RIGHT TO A TRIAL BY JURY IN ANY ACTION, PROCEEDING OR
COUNTERCLAIM ARISING OUT OF OR RELATING TO THIS AGREEMENT, THE OTHER OPERATIVE
DOCUMENTS OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY.

                            [SIGNATURE PAGES FOLLOW]

                                      -19-
<PAGE>   24

                  IN WITNESS WHEREOF, the Certificate Holders and Trustee have
caused this Trust Agreement to be duly executed as of the day and year first
above written.

TRUSTEE:                                [NAME OF TRUST COMPANY], not in its
                                        individual capacity, except as set forth
                                        herein, but solely as Trustee

                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:

<PAGE>   25

CERTIFICATE HOLDERS:                    [__________________________]

                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:

                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:

<PAGE>   26

                                                                       EXHIBIT A
                                                              to Trust Agreement

                           FORM OF MASTER CERTIFICATE

                  THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES OR "BLUE SKY" LAW, AND MAY NOT
BE TRANSFERRED, SOLD OR OFFERED FOR SALE IN VIOLATION OF SUCH ACT OR LAWS.

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

                                   CERTIFICATE

                          Evidencing an interest in the
                         Trust Estate, as defined below.

Number [      ]                                         Dated ____________, 2000

                      Certificate Holder Amount: $_________

                   THIS CERTIFIES THAT __________________________________ (the
"Certificate Holder") is the registered owner of a______________________Dollars
($_________) Certificate, or, if less the aggregate unpaid Certificate Holder
Amount, evidencing an interest in the Trust Estate created pursuant to (and
defined in) that certain Trust Agreement, dated ___________, 2000, (the "Trust
Agreement") among the Persons listed on Schedule I thereto, as Certificate
Holders and [TRUST COMPANY], [a __________ banking corporation], as Trustee,
which creates the trust identified above. To the extent not otherwise defined
herein, capitalized terms used herein shall have the meanings assigned to such
terms in the Participation Agreement (as defined in the Trust Agreement), unless
the context otherwise requires. This Certificate is being delivered pursuant to,
is entitled to the benefits of, and is subject to the terms, provisions and
conditions of, the Trust Agreement, to which Trust Agreement the holder of this
Certificate by virtue of its acceptance hereof assents and by which such holder
is bound.

                  This Certificate entitles the registered owner hereof to the
payment of a sum equal to the aggregate unpaid Certificate Holder Amount hereof,
together with the Equity Return on said Certificate Holder Amount remaining
unpaid from time to time from the date of this Certificate until payment hereof
is made or duly provided. All payments of the Certificate Holder Amount hereof
and Equity Return thereon shall be due and payable in such amounts and at the
times provided in the Trust Agreement.

                                      A-1

<PAGE>   27

                                                                       EXHIBIT A
                                                              to Trust Agreement

                  Interest on any overdue Certificate Holder Amount and to the
extent permitted by Applicable Law, Equity Return thereon shall be paid from the
due date thereof at the Overdue Rate.

                  All payments of Certificate Holder Amount and other amounts
hereunder to be made by Trustee shall be made only from the income and proceeds
from the Trust Estate and only to the extent that Trustee shall have sufficient
income or proceeds from the Trust Estate to make such payments in accordance
with the terms of Articles III and IV of the Trust Agreement. Each holder
hereof, by its acceptance of this Certificate, agrees: (i) that it will look
solely to the income and proceeds from the Trust Estate to the extent available
for distribution to the holder hereof; and (ii) that in any action or proceeding
brought on this Certificate or on the indebtedness evidenced hereby, no
deficiency or other monetary judgment shall be sought or obtained against
Trustee by reason of the ownership of this Certificate, except as is necessary
to enforce the rights and remedies of such holder under the Trust Agreement and
the other Operative Documents (including, but not by way of limitation,
foreclosure by the Lenders on the Lessor Collateral or other collateral
security), in which event any such judgment shall be enforceable against Trustee
only to the extent of the interest of Trustee in the Trust Estate and any such
judgment shall not be enforceable by execution or by a Lien on any of the assets
of Trustee or Trust Company other than the interest of Trustee in the Trust
Estate.

                  All Certificate Holder Amounts of and Equity Return on this
Certificate shall be payable in immediately available funds as provided in
Article IV of the Trust Agreement.

                  There shall be maintained a register for the purpose of
registering transfers and exchanges of Certificates, at the offices of the
Administrative Agent, or at the office of any successor trustee.

                  Each holder of this Certificate, by its acceptance hereof,
agrees that each payment received by such holder hereunder on account of the
Certificate Holder Amount of or Equity Return on this Certificate shall be
applied in the manner set forth in Article IV of the Trust Agreement.

                  This Certificate is one of the Certificates referred to in the
Trust Agreement that have been delivered pursuant to the terms of the Trust
Agreement. Reference is hereby made to the Trust Agreement and the other
Operative Documents for a statement of: (i) the rights of the holder of, and the
nature and extent of the security for, this Certificate; (ii) the rights of the
holders of, and the nature and extent of the security for, the other
Certificates; and (iii) the terms, rights and conditions of the trusts created
by the Trust Agreement.

                  This Certificate is not subject to prepayment except as
provided in the Trust Agreement, the Lease Agreement and the Participation
Agreement.

                  This Certificate is a registered Certificate and is
transferable, as provided in the Trust Agreement, only upon surrender of this
Certificate for registration and transfer duly accompanied by a written
instrument of transfer duly executed by the registered holder hereof or his
attorney duly authorized in writing. Prior to due registration of transfer of
this Certificate,

                                      A-2

<PAGE>   28
                                                                       EXHIBIT A
                                                              to Trust Agreement

Trustee may treat the Person in whose name this Certificate is
registered as the owner hereof for the purpose of receiving payments of the
Certificate Holder Amount and Equity Return hereunder and under the Trust
Agreement and for all other purposes whatsoever, whether or not this Certificate
be overdue, and Trustee shall not be affected by notice to the contrary.

                  [remainder of page intentionally left blank]

                                      A-3

<PAGE>   29

                  IN WITNESS WHEREOF, Trustee has caused this Certificate to be
executed in its corporate name by its duly authorized officer as of the date
hereof.

                                        [NAME OF TRUST COMPANY], not in its
                                        individual capacity, except as set forth
                                        herein, but solely as Trustee

                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:

                                        This Certificate is one of the
                                        Certificates referred to in the
                                        within-mentioned Trust Agreement.

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