Document:

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                                                                    EXHIBIT 10.2

                                                                [POWERCERV LOGO]

FOR IMMEDIATE RELEASE         CONTACT
October 2, 2002               Marc Fratello
                              Chairman & CEO
                              813.226.2600 ext 1002  marc.fratello@powercerv.com

         ASA INTERNATIONAL LTD. TO ACQUIRE POWERCERV CORPORATION ASSETS

TAMPA, FL - PowerCerv Corporation (OTCBB: PCRV), a Tampa-based provider of
enterprise software solutions, announced today that it has signed a definitive
agreement to sell substantially all of its assets to ASA International Ltd.
(NASDAQ:ASAA), a holding company of vertical enterprise software solutions based
in Framingham, MA. Under terms of the agreement, in addition to ASA assuming
certain PowerCerv liabilities, upon closing ASA will pay PowerCerv $500,000 cash
and issue a $90,000 note due in six months. The purchase price may be subject to
certain post-closing adjustments. Following the closing, PowerCerv will use its
best efforts to settle its remaining liabilities and buy another operating
business. Closing of the transaction is subject to the satisfaction of various
conditions, including the approval of PowerCerv shareholders.

 "PowerCerv's long-tenured employees, their loyal customer base, and their
breadth of intellectual property provide a great foundation on which to build,"
said Alfred Angelone, chairman and CEO of ASA International. "By becoming an ASA
company, PowerCerv can focus on their core competencies and vertical successes
knowing they have a stable parent behind them."

 "ASA is committed to PowerCerv stakeholders," said Marc Fratello, chairman and
CEO of PowerCerv, "they understand that, even in a tough economic environment,
there is the opportunity for significant success for firms such as ours with a
defined market approach and, almost as importantly, the products and services
that address today's business issues. "

ABOUT POWERCERV
PowerCerv develops and delivers a fully integrated suite of e-business, Customer
Relationship Management and Enterprise Resource Planning applications designed
to help small-to-midsize manufacturers and distributors quickly respond to
customers, suppliers, partners and employees around the world. With PowerCerv
solutions, manufacturers and distributors gain competitive advantage by
extending their enterprise operations across the supply chain. For more
information contact PowerCerv at (800) 251-8449, fax (813) 222-0886 or visit
www.powercerv.com.

ABOUT ASA INTERNATIONAL LTD.
ASA International Ltd. (www.asaint.com) provides quality enterprise-wide
business-to-business software solutions and value-added services to vertical
markets. ASA solutions enable organizations to achieve a maximum return on their
information technology investment because they simplify the process of planning,
managing and controlling the complete business process. ASA has developed,
built, and deployed its enterprise-wide software, services, and customized
support to thousands of businesses in North America, South America and Western
Europe since 1969.

Statements contained in this press release that are not historical fact are
"forward looking statements" and/or statements of opinion. There can be no
guarantees as to how this matter will eventually be resolved or affect it may
have on the future performance of the company. Performance is subject to certain
risks uncertainties and assumptions that are difficult to predict.

                                      - # -

               400 N Ashley Drive - Suite 2675 - Tampa, Florida -
            33602 - 813.226.2600 - 813.222.0886 - www.powercerv.com<PAGE>
                                                                    EXHIBIT 10.1

                        EXCHANGE AND REPURCHASE AGREEMENT

         EXCHANGE AND REPURCHASE AGREEMENT ("AGREEMENT"), dated as of September
24, 2002, by and between U.S. Plastic Lumber Corp., a Nevada corporation (the
"COMPANY"), and Halifax Fund L.P. (the "HOLDER").

         The Company issued and sold to the Holder (i) a 5% Convertible
Debenture due February 2, 2005 (the "2000 DEBENTURE"), pursuant to a Convertible
Debenture Purchase Agreement, dated as of February 2, 2000 (the "2000 PURCHASE
AGREEMENT"), (ii) an 18% Debenture due July 1, 2002 (the "2001 DEBENTURE"),
pursuant to a Securities Purchase Agreement, dated as of June 15, 2001 (the
"2001 PURCHASE AGREEMENT"), and (iii) shares of its 15% Series D Preferred Stock
(the "PREFERRED STOCK").

         The Company and the Holder entered into a Registration Rights
Agreement, dated as of February 2, 2000 (the "2000 REGISTRATION RIGHTS
AGREEMENT"), and a Registration Rights Agreement, dated as of June 15, 2001 (the
"2001 REGISTRATION RIGHTS AGREEMENT"), in which the Company agreed to register
shares of the Company's common stock, par value $.0001 ("COMMON STOCK"),
issuable under the 2000 Debenture and the 2001 Debenture (together, the
"DEBENTURES") and under the Warrants (as defined below). In order to secure the
obligations of the Company under the Debentures, the Preferred Stock and the
Warrants, the Company and its Subsidiaries granted to the Holder a second lien
on all of their respective assets pursuant to the terms of a Security Agreement,
dated as of June 15, 2001 (the "SECURITY AGREEMENT").

         The Company wishes, on the terms and conditions set forth in this
Agreement, (i) to issue to the Holder, in exchange for the 2000 Debenture, and
pursuant to the exemption from registration provided by Section 3(a)(9) of the
Securities Act (as defined below), (A) a 10% Convertible Subordinated Debenture
due March 24, 2006, substantially in the form attached hereto as EXHIBIT A (the
"SUBORDINATED DEBENTURE"), and (B) a 10% Subordinated Note due March 24 2006,
substantially in the form attached hereto as EXHIBIT B (the "SUBORDINATED
NOTE"), (ii) to repurchase from the Holder the 2001 Debenture and all of the
shares of Preferred Stock owned by the Holder (the "PREFERRED SHARES"), (iii) to
amend and restate the Security Agreement substantially in the form attached
hereto as EXHIBIT C (the "RESTATED SECURITY AGREEMENT") in order to secure the
obligations of the Company under the Subordinated Debenture and the Subordinated
Note and, in connection therewith, to execute, deliver and file, or cause to be
executed, delivered and filed, a mortgage in the form attached hereto as EXHIBIT
D (the "MORTGAGE"), covering the Ocala Property (as defined below) (the
"MORTGAGED PROPERTY"), (iv) to enter into a Registration Rights Agreement
substantially in the form attached hereto as EXHIBIT E (the "2002 REGISTRATION
RIGHTS Agreement"), (v) to terminate the Existing Instruments (as defined below)
pursuant to the Termination Agreement (as defined below) and (vi) to provide for
the reciprocal waiver and release of certain rights and liabilities pursuant to
the Waiver and Release Agreement (as defined below).

         The Company and the Holder hereby agree as follows:

                                      -1-

<PAGE>
1.       EXCHANGE  AND REPURCHASE.

         1.1 EXCHANGE OF SUBORDINATED DEBENTURE; REPURCHASE. On the terms and
subject to the satisfaction or waiver of the conditions set forth herein, (A)
the Company agrees (i) to issue to the Holder, in exchange for the 2000
Debenture and accrued interest, default charges, fees and penalties thereon, a
Subordinated Debenture with a principal amount of $2,831,558 and a Subordinated
Note with a principal amount of $5,600,000 (the "EXCHANGE") and (ii) to
repurchase (x) the 2001 Debenture and accrued interest, default charges, fees
and penalties thereon, and (y) 285,714 Preferred Shares and accrued dividends,
default charges, fees and penalties thereon from the Holder (the "REPURCHASE")
for a purchase price equal to $2,500,000 (the "REPURCHASE PRICE") and (B) the
Holder agrees to effect the Exchange and the Repurchase. The parties acknowledge
and agree that, upon the effectiveness of the Exchange and the Repurchase, (i)
the Company's obligations under the 2000 Debenture, the 2001 Debenture and the
Preferred Shares (including without limitation the Company's obligation to pay
accrued interest, accrued dividends, default charges, fees and penalties) will
terminate and (ii) the Company will have received reasonably equivalent value in
connection with the Exchange and Repurchase. In connection with the Exchange and
the Repurchase, the Existing Instruments (as defined below) will terminate in
accordance with the terms of the Termination Agreement (as defined below).

         1.2 CLOSING. The "CLOSING" will be deemed to occur when the Company and
the Holder each executes and delivers this Agreement and the other Transaction
Documents (as defined below) to which it is a party and the other conditions to
Closing described in this Agreement are satisfied (or waived by the appropriate
party). The date on which the Closing occurs is hereinafter referred to as the
"CLOSING DATE". Delivery of this Agreement and the other Transaction Documents
(as defined below) may be made by facsimile transmission.

2.       DEFINITIONS.

         2.1 CERTAIN DEFINITIONS. When used herein, the following terms shall
have the respective meanings indicated:

                  "AFFILIATE" means, as to any Person (the "SUBJECT PERSON"),
any other Person (a) that directly or indirectly through one or more
intermediaries controls or is controlled by, or is under direct or indirect
common control with, the subject Person, (b) that directly or indirectly
beneficially owns or holds ten percent (10%) or more of any class of voting
equity of the subject Person, or (c) ten percent (10%) or more of the voting
equity of which is directly or indirectly beneficially owned or held by the
subject Person. For the purposes of this definition, "CONTROL" when used with
respect to any Person means the power to direct the management and policies of
such Person, directly or indirectly, whether through the ownership of voting
securities, through representation on such Person's Board of Directors or other
management committee or group, by contract or otherwise.

                  "AGREEMENT" means this Agreement and any and all amendments,
modifications, supplements, renewals, extensions or restatements hereof, and all
attachments hereto.

                                      -2-
<PAGE>

                  "APPROVED MARKET" means each of the Nasdaq National Market,
the Nasdaq SmallCap Market, the OTC Bulletin Board, the New York Stock Exchange
and the American Stock Exchange, and their respective successor entities.

                  "BUSINESS DAY" means any day other than a Saturday, Sunday or
any other day on which the New York Stock Exchange or commercial banks in the
city of New York are authorized or required to close.

                  "CHICAGO PROPERTY" means the property now generally known as
2600 West Roosevelt Road, Chicago, IL 60608.

                  "CLEAN EARTH ENTITIES" means Clean Earth and its Subsidiaries.

                  "CLEAN EARTH INTELLECTUAL PROPERTY" means all Intellectual
Property related to the business of the Clean Earth Entities, whether owned or
licensed by the Clean Earth Entities, on one hand, or the Company or one or more
of its Subsidiaries, on the other hand.

                  "CLEAN EARTH SALE" means the sale by the Company of all the
outstanding shares of common stock of Clean Earth, Inc. ("CLEAN EARTH") to CEI
Acquisition Corp. and/or CEI Holding Corporation (the "CLEAN EARTH PURCHASER")
pursuant to an Amended and Restated Purchase Agreement, dated as of June 14,
2002 (the "CLEAN EARTH PURCHASE AGREEMENT").

                  "CONVERSION PRICE" has the meaning specified in the
Subordinated Debenture.

                  "CONVERSION SHARES" means the shares of Common Stock issuable
upon conversion of the Subordinated Debenture.

                  "DEBT" means as to any Person at any time (without
duplication): (a) all indebtedness, liabilities and obligations of such Person
for borrowed money; (b) all indebtedness, liabilities and obligations of such
Person to pay the deferred purchase price of Property or services, except trade
accounts payable of such Person arising in the ordinary course of business; (c)
all capital lease obligations of such Person; (d) all Debt of others guaranteed
by such Person; (e) all indebtedness, liabilities and obligations secured by a
Lien existing on Property owned by such Person, whether or not the indebtedness,
liabilities or obligations secured thereby have been assumed by such Person or
are non-recourse to such Person; (f) all reimbursement obligations of such
Person (whether contingent or otherwise) in respect of letters of credit,
bankers' acceptances, surety or other bonds and similar instruments; and (g) all
liabilities and obligations of such Person to redeem or retire shares of capital
stock of such Person where such redemption or retirement is scheduled to occur
prior to the third anniversary of the Closing Date.

                  "ENVIRONMENTAL LAW" means any federal, state, provincial,
local or foreign law, statute, code or ordinance, principle of common law, rule
or regulation, as well as any permit, order, decree, judgment or injunction
issued, promulgated, approved or entered thereunder, relating to pollution or
the protection, cleanup or restoration of the environment or natural resources,
or to the public health or safety, or otherwise governing the generation, use,

                                      -3-
<PAGE>

handling, collection, treatment, storage, transportation, recovery, recycling,
discharge or disposal of hazardous materials.

                  "ERISA" means the Employee Retirement Income Security Act of
1974, as amended, and the regulations and published interpretations thereunder.

                  "EXCHANGE ACT" means the Securities Exchange Act of 1934, as
amended (or any successor act), and the rules and regulations thereunder (or
respective successors thereto).

                  "EXISTING INSTRUMENTS" means, collectively, the 2000 Purchase
Agreement, the 2001 Purchase Agreement, the 2000 Debenture, the 2001 Debenture,
the Preferred Shares, the 2000 Registration Rights Agreement and the 2001
Registration Rights Agreement.

                  "GAAP" means generally accepted accounting principles, applied
on a consistent basis, as set forth in (i) opinions of the Accounting Principles
Board of the American Institute of Certified Public Accountants, (ii) statements
of the Financial Accounting Standards Board, and (iii) interpretations of the
SEC and the Staff of the SEC and each of their respective successors and which
are applicable in the circumstances as of the date in question. Accounting
principles are applied on a "consistent basis" when the accounting principles
applied in a current period are comparable in all material respects to those
accounting principles applied in a preceding period.

                  "GOVERNMENTAL AUTHORITY" means any nation or government, any
state, provincial or political subdivision thereof and any entity exercising
executive, legislative, judicial, regulatory or administrative functions of or
pertaining to government, including without limitation any stock exchange,
securities market or self-regulatory organization.

                  "GOVERNMENTAL REQUIREMENT" means any law, statute, code,
ordinance, order, rule, regulation, judgment, decree, injunction, franchise,
license or other directive or requirement of any federal, state, county,
municipal, parish, provincial or other Governmental Authority or any department,
commission, board, court, agency or any other instrumentality of any of them.

                  "INTELLECTUAL PROPERTY" means any U.S. or foreign patents,
patent applications, trademarks, trade names, service marks, brand names, logos
and other trade designations (including unregistered names and marks), trademark
and service mark registrations and applications, copyrights and copyright
registrations and applications, inventions, invention disclosures, protected
formulae, formulations, processes, methods, trade secrets, computer software,
computer programs and source codes, manufacturing research and similar technical
information, engineering know-how, customer and supplier information, assembly
and test data drawings or royalty rights.

                  "LIEN" means, with respect to any Property, any mortgage or
deed of trust, pledge, hypothecation, assignment, deposit arrangement, security
interest, tax lien, financing statement, charge, or other lien, charge, easement
(other than any easement not materially impairing usefulness), encumbrance,
preference, priority or other security agreement or preferential arrangement of

                                      -4-
<PAGE>

any kind or nature whatsoever on or with respect to such Property (including,
without limitation, any conditional sale or other title retention agreement
having substantially the same economic effect as any of the foregoing).

                  "MASTER CREDIT FACILITY" means the Debt issued under and
governed by the Security Agreement, dated as of February 24, 2000, among the
Company, GE Capital Corporation, as agent, and the banks named therein, and
related documents, each as amended or otherwise modified from time to time, and
any renewal, extension, refinancing or replacement (or successive renewals,
extensions, refinancings or replacements) thereof.

                  "MATERIAL ADVERSE EFFECT" means a material adverse effect on
(i) the consolidated business, operations, properties, financial condition, or
results of operations of the Company and its Subsidiaries taken as a whole or
(ii) the ability of the Company to perform its obligations under this Agreement
or the other Transaction Documents (as defined below).

                  "MATERIAL CONTRACTS" means, as to the Company and its
Subsidiaries, any supply, purchase, service, employment, tax, indemnity,
stockholder or other agreement or contract to which the Company or any of its
Subsidiaries is a party or by which it or any of its assets are bound, and that
has been filed as an exhibit to, or incorporated by reference in, the Company's
Annual Report on Form 10-K for the year ended December 31, 2001 any subsequent
periodic report or other filing made by the Company with the SEC, and any and
all amendments, modifications, supplements, renewals or restatements thereof.

                  "MFN TRANSACTION" means a transaction in which the Company
issues or sells any securities in a capital raising transaction or series of
related transactions (an "MFN OFFERING") which grants to a purchaser (a "MFN
HOLDER") the right to receive additional shares (including without limitation as
a result of a lower conversion, exchange or exercise price but excluding
customary antidilution protections) based upon subsequent transactions of the
Company on terms more favorable than those granted to such MFN Holder pursuant
to such MFN Offering.

                  "OBLIGATIONS" means any and all indebtedness, liabilities and
obligations of the Company to the Holder relating to the payment of money and
evidenced by and/or arising pursuant to this Agreement or any of the Transaction
Documents, now existing or hereafter arising, whether direct, indirect, related,
unrelated, fixed, contingent, liquidated, unliquidated, joint, several or joint
and several, including, without limitation, the obligations of the Company to
repay principal of the Subordinated Debenture and the Subordinated Note, to pay
interest on the Subordinated Debenture and the Subordinated Note (including,
without limitation, interest accruing after any bankruptcy, insolvency,
reorganization or other similar filing) and to pay all fees, indemnities, costs
and expenses (including attorneys' fees) provided for in the Transaction
Documents.

                  "OCALA PROPERTY" means the property now generally known as
1901 25th Avenue, Ocala, FL.

                  "PENSION PLAN" means an employee benefit plan (as defined in
ERISA) maintained by the Company for employees of the Company or any of its
Affiliates.

                                      -5-
<PAGE>

                  "PERMITTED DEBT" means the following:

                           (a) the Subordinated Debenture and Subordinated Note;

                           (b) the Senior Debt (except that any increase in the
principal amount of the Master Credit Facility or the commitment amount under
the Senior Credit Facility after the Closing Date (which may include, subject to
the remainder of this clause (b), any combination of a line of credit and one or
more term loans) will not constitute Permitted Debt to the extent that, before
or after giving effect to such increase, the sum of (A) the outstanding
principal amount under the Master Credit Facility, plus (B) the maximum
commitment amount under any line of credit constituting all or part of the
Senior Credit Facility, plus (C) the outstanding principal amount under any term
loan(s) constituting all or part of the Senior Credit Facility, plus (D) the
outstanding principal amount under any purchase money Debt incurred for the
purpose of or in connection with the financing of all or a portion of the
Chicago Property in accordance with clause (d) below, exceeds $28,200,000);

                           (c) inter-company Debt between the Company and any of
its wholly-owned Subsidiaries that is incurred in the ordinary course of
business, consistent with past practice;

                           (d) purchase money Debt incurred in the ordinary
course of business solely for the purpose of financing all or a portion of (but
in no event to exceed) the acquisition cost of Property (including without
limitation the Chicago Property) plus, in the case of a purchase of the Chicago
Property, an additional amount, not to exceed $2,500,000, the proceeds of which
will be used solely to pay amounts owed to the holders of the Master Credit
Facility pursuant to the Master Credit Facility;

                           (e) guarantees or, subject to the Liens created
pursuant to the Restated Security Agreement, hypothecations of Property by the
Company to secure the Debt (to the extent such Debt constitutes Permitted Debt)
or operating leases of any of its wholly-owned Subsidiaries, and guarantees or,
subject to the Liens created pursuant to the Restated Security Agreement,
hypothecations of the Property of any Subsidiary of the Company to secure the
Debt (to the extent such Debt constitutes Permitted Debt) or operating leases of
the Company, in each such case, as incurred by such Person in the ordinary
course of business;

                           (f) capital leases pursuant to which the Company or
any Subsidiary of the Company is lessee, and incurred by such Person in the
ordinary course of business;

                           (g) reimbursement obligations (whether contingent or
otherwise) of the Company or any of its Subsidiaries in respect of letters of
credit, bankers' acceptances, surety or other bonds and similar instruments
incurred in the ordinary course of business;

                           (h) any Debt disclosed in the Pre-Agreement SEC
Documents and set forth on SCHEDULE 2.1; and

                                      -6-
<PAGE>

                           (i) any renewal, extension or replacement (or
successive renewals, extensions or replacements) of any Debt referred to in
clauses (a) through (h) above.

                  "PERMITTED LIENS" means the following:

                           (a) encumbrances consisting of easements,
rights-of-way, zoning restrictions or other restrictions on the use of real
Property or imperfections to title that do not (individually or in the
aggregate) materially impair the ability of the Company or any of its
Subsidiaries to use such Property in its businesses, and none of which is
violated in any material respect by existing or proposed structures or land use;

                           (b) Liens for taxes, assessments or other
governmental charges that are not delinquent or which are being contested in
good faith by appropriate proceedings, which proceedings have the effect of
preventing the forfeiture or sale of the Property subject to such Liens, and for
which adequate reserves (as determined in accordance with GAAP) have been
established;

                           (c) Liens of mechanics, materialmen, warehousemen,
carriers, landlords or other similar statutory Liens securing obligations that
are not yet due and are incurred in the ordinary course of business and which
either secure obligations that are not overdue by more than thirty (30) days, or
are being contested in good faith by appropriate proceedings, which proceedings
have the effect of preventing the forfeiture or sale of the Property subject to
such Liens, and for which adequate reserves (as determined in accordance with
GAAP) have been established;

                           (d) any purchase money security interest hereafter
created on any Property of the Company or any Subsidiary of the Company securing
Debt incurred solely for the purpose of financing all or a portion of (but in no
event to exceed) the acquisition cost of such Property (including without
limitation the Chicago Property) plus, in the case of a purchase of the Chicago
Property, an additional amount, not to exceed $2,500,000, the proceeds of which
will be used solely to pay amounts owed to the holders of the Master Credit
Facility pursuant to the Master Credit Facility;

                           (e) capital leases pursuant to which the Company or
any Subsidiary of the Company is lessee, and incurred by such Person in the
ordinary course of business;

                           (f) Liens, deposits or pledges to secure the
performance of bids, tenders, contracts, leases, or public or statutory
obligations;

                           (g) Liens under workmen's compensation, unemployment
insurance, social security and other similar legislation;

                           (h) Liens (including, without limitation, Liens on
the Mortgaged Property) securing the Senior Debt, except to the extent that any
Senior Debt does not constitute Permitted Debt;

                                      -7-
<PAGE>

                           (i) Liens existing on the date hereof securing Debt
outstanding on such date and disclosed in the Pre-Agreement SEC Documents;

                           (j) Liens existing or hereafter created pursuant to
the Restated Security Agreement in favor of the Holder;

                           (k) any renewal, extension or replacement (or
successive renewals, extensions, or replacements) of any Lien referred to in the
foregoing clauses (d), (e), (h) or (i); and

                           (l) ordinary course deposit arrangements of the
Company or any Subsidiary of the Company.

                  "PERSON" means any individual, corporation, trust,
association, company, partnership, joint venture, limited liability company,
joint stock company, Governmental Authority or other entity.

                  "PRE-AGREEMENT SEC DOCUMENT" shall have the meaning set forth
in Section 4.3 hereof.

                  "PROPERTY" means property and/or assets of all kinds, whether
real, personal or mixed, tangible or intangible (including, without limitation,
all rights relating thereto).

                  "QUAKERTOWN NOTE" shall have the meaning set forth in the
Restated Intercreditor Agreement.

                  "REAL PROPERTY" shall have the meaning set forth in Section
3.27 hereof.

                  "RESTATED INTERCREDITOR AGREEMENT" means the Amended and
Restated Subordination and Intercreditor Agreement, dated as of September 9,
2002, between the Holder and Bank of America, as agent.

                  "RESTRICTED PAYMENT" means (a) any dividend or other
distribution (whether in cash, Property or obligations), direct or indirect, on
account of (or the setting apart of money for a sinking or other analogous fund
for) any shares of any class of capital stock of the Company or any of its
Subsidiaries now or hereafter outstanding, except a dividend payable solely in
shares of that class of stock to all of the holders of that class; (b) any
redemption, conversion, exchange, retirement, sinking fund or similar payment,
purchase or other acquisition for value, direct or indirect, of any shares of
any class of capital stock of the Company or any of its Subsidiaries now or
hereafter outstanding, except the Warrants; (c) any payment or prepayment of
principal of, premium, if any, or interest on, or any redemption, conversion,
exchange, purchase, retirement or defeasance of, or payment with respect to, any
Debt other than Permitted Debt; and (d) any loan, advance or payment to any
officer, director or stockholder of the Company or any of its Subsidiaries,
exclusive of (i) reasonable compensation paid to officers or directors paid in

                                      -8-
<PAGE>

the ordinary course of business and (ii) loans made to employees of the Company,
such loans not to exceed, in the aggregate, $100,000 (excluding from such amount
any such loans existing on the date hereof and specifically disclosed in the
Pre-Agreement SEC Documents). Notwithstanding the foregoing, the issuance of
securities upon exercise or conversion of the Company's options, warrants or
other convertible securities outstanding as of the date hereof and set forth on
SCHEDULE 3.4 or the grant of additional options or warrants or the issuance of
additional securities under any stock option or restricted stock plan approved
by the Board of Directors of the Company shall not constitute a Restricted
Payment.

                  "SEC" means the Securities and Exchange Commission, and any
successor entity.

                  "SEC DOCUMENT" shall have the meaning set forth in Section 3.7
hereof.

                  "SECURITIES" means, collectively, the Subordinated Debenture,
the Subordinated Note, the Warrants, the Conversion Shares and the Warrant
Shares.

                  "SENIOR CREDIT FACILITY" means the Debt issued under and
governed by the Credit Agreement, dated as of September 10, 2002, between the
Company and Bank of America, as agent, as amended or otherwise modified from
time to time, and any renewal, extension, refinancing or replacement (or
successive renewals, extensions, refinancings or replacements) thereof.

                  "SENIOR DEBT" means the Senior Credit Facility and the Master
Credit Facility, and any renewal, extension, refinancing or replacement (or
successive renewals, extensions, refinancings or replacements) thereof. For the
avoidance of doubt, and for purposes of this Agreement and the other Transaction
Documents (other than the Restated Intercreditor Agreement), "Senior Debt" shall
include any Quakertown Note.

                  "SUBORDINATED DEBT" means Debt of the Company which is wholly
unsecured and is contractually subordinated, as to payment, to the payment in
full of the Obligations on terms, and pursuant to written agreements in form and
substance, satisfactory to the Holder.

                  "SUBORDINATED DEBT DOCUMENTS" means any and all agreements,
documents and instruments now or hereafter evidencing or governing the
subordination of any Subordinated Debt to the Obligations.

                  "SUBSIDIARY" means, with respect to any Person, any
corporation or other entity of which at least twenty percent (20%) of the
outstanding shares of stock or other ownership interests having by the terms
thereof ordinary voting power to elect a majority of the board of directors (or
Persons performing similar functions) of such corporation or entity
(irrespective of whether or not at the time, in the case of a corporation, stock
of any other class or classes of such corporation shall have or might have
voting power by reason of the happening of any contingency) is at the time
directly or indirectly owned or controlled by such Person or one or more of its
Subsidiaries or by such Person and one or more of its Subsidiaries; provided,
however, that none of the Clean Earth Entities shall be deemed to be a
Subsidiary of the Company other than any Clean Earth Entity that is not included
in the Clean Earth Sale.

                                      -9-
<PAGE>

                  "SUBSIDIARY GUARANTEE" means the guarantee executed by the
Company's Subsidiaries, substantially in the form of EXHIBIT F hereto.

                  "TERMINATION AGREEMENT" means the agreement between the
Company and the Holder terminating the Existing Instruments, substantially in
the form of EXHIBIT G hereto.

                  "TRADING DAY" shall mean any day on which the Common Stock is
purchased and sold on the principal market on which the Common Stock is then
listed or traded.

                  "TRANSACTION DOCUMENTS" means (i) this Agreement, (ii) the
Subordinated Debenture, (iii) the Subordinated Note, (iv) the Mortgage, (v) the
Restated Security Agreement, (vi) the 2002 Registration Rights Agreement, (vii)
the Termination Agreement, (viii) the Waiver and Release Agreement, (ix) the
Warrants, (x) the Subsidiary Guarantee, (ix) the Restated Intercreditor
Agreement and (xii) all other agreements, documents and other instruments
executed and delivered by or on behalf of the Company or the Holder, or any of
their respective officers, at the Closing, including, without limitation, any
new intercreditor and subordination agreement entered into pursuant to Section
5.12 or 5.16 hereof.

                  "USPL LTD." means U.S. Plastic Lumber, Ltd.

                  "VARIABLE RATE TRANSACTION" shall mean a transaction in which
the Company issues or sells (i) any debt or equity securities that are
convertible into, exchangeable or exercisable for, or include the right to
receive additional shares of, Common Stock either (x) at a conversion, exercise
or exchange rate or other price that is based upon and/or varies with the
trading prices of or quotations for the Common Stock at any time after the
initial issuance of such debt or equity securities, or (y) with a fixed
conversion, exercise or exchange price that is subject to being reset at some
future date after the initial issuance of such debt or equity security or upon
the occurrence of specified or contingent events directly or indirectly related
to the business of the Company or the market for the Common Stock (but excluding
standard stock split anti-dilution provisions), or (ii) any securities of the
Company issued pursuant to an "equity line" structure which provides for the
sale, from time to time, of securities of the Company which are registered for
resale under the Securities Act.

                  "WAIVER AND RELEASE AGREEMENT" means the agreement between the
Company and the Holder, in the form attached hereto as EXHIBIT H, whereby (i)
the Holder will waive all rights it may have to default payments, fees and
penalties under the Existing Instruments, and (ii) each party will release the
other party for all claims by and liabilities to the other party under the
Existing Instruments.

                  "WARRANTS" means, collectively, (i) the Warrant issued on
December 22, 1998 exercisable into 50,000 Warrant Shares, (ii) the Warrant
issued on January 26, 1999 exercisable into 37,500 Warrant Shares, (iii) the
Warrant issued on February 2, 2000 exercisable into 200,000 Warrant Shares, (iv)
the Warrant issued on June 15, 2001 exercisable into 250,000 Warrant Shares and
(v) the Warrant issued on August 16, 2001 exercisable into 250,000 Warrant
Shares.

                                      -10-
<PAGE>

                  "WARRANT SHARES" means the shares of Common Stock issuable
upon exercise of the Warrants.

         2.2 OTHER DEFINITIONAL PROVISIONSSECTION 1.2 OTHER DEFINITIONAL
PROVISIONS. All definitions contained in this Agreement are applicable equally
to the singular and plural forms of the terms defined. The words "HEREOF",
"HEREIN" and "HEREUNDER" and words of similar import referring to this Agreement
refer to this Agreement as a whole and not to any particular provision of this
Agreement.

3.       REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company hereby makes
the following representations and warranties to the Holder, as of the date of
this Agreement and, if different, as of the Closing Date, and, with respect to
Sections 3.4 and 3.13, agrees with the Holder that:

         3.1 ORGANIZATION AND QUALIFICATION; MATERIAL ADVERSE EFFECT. The
Company is a corporation duly incorporated and existing in good standing under
the laws of the State of Nevada and has the requisite corporate power to own its
properties and to carry on its business as now being conducted. The Company does
not have any direct or indirect Subsidiaries other than the Subsidiaries listed
on SCHEDULE 3.1 attached hereto. Except where specifically indicated to the
contrary, all references in this Agreement to Subsidiaries shall be deemed to
refer to all direct and indirect Subsidiaries of the Company. Each of the
Company and its Subsidiaries is duly qualified as a foreign corporation to do
business and is in good standing in every jurisdiction in which the nature of
the business conducted or property owned by it makes such qualification
necessary other than those in which the failure so to qualify would not have a
Material Adverse Effect.

         3.2 COMPANY AUTHORIZATION; ENFORCEMENT. The Company has all requisite
corporate power and authority to enter into and perform its obligations under
this Agreement and the other Transaction Documents to which it is a party. The
execution and delivery by the Company of this Agreement, the other Transaction
Documents to which it is a party, and the consummation by it of the transactions
contemplated hereby and thereby, have been duly authorized by all necessary
corporate action, and no further consent or authorization of the Company or its
Board of Directors (or any committee or subcommittee thereof) or stockholders is
required. Each of this Agreement and the other Transaction Documents to which
the Company is a party has been duly executed and delivered by the Company, and
constitutes a valid and binding obligation of the Company enforceable against
the Company in accordance with its terms, except as such enforceability may be
limited by applicable bankruptcy, insolvency, reorganization, moratorium,
liquidation or similar laws relating to, or affecting generally the enforcement
of creditors' rights and remedies or by other equitable principles of general
application.

         3.3 SUBSIDIARY AUTHORIZATION; ENFORCEMENT. Each Subsidiary of the
Company has all requisite corporate power and authority to enter into and
perform its obligations under the Subsidiary Guarantee and the Restated Security
Agreement, respectively. The execution and delivery by each such Subsidiary of
the Subsidiary Guarantee and the Restated Security Agreement, and the
consummation by it of the transactions contemplated thereby, have been duly
authorized by all necessary corporate action, and no further consent or
authorization of such Subsidiary or its Board of Directors (or any committee or

                                      -11-
<PAGE>

subcommittee thereof) or stockholders is required. Each of the Subsidiary
Guarantee and the Restated Security Agreement, when executed by a Subsidiary of
the Company, will be duly executed and delivered by such Subsidiary, and will
constitute a valid and binding obligation of such Subsidiary enforceable against
such Subsidiary in accordance with its terms, except as such enforceability may
be limited by applicable bankruptcy, insolvency, reorganization, moratorium,
liquidation or similar laws relating to, or affecting generally the enforcement
of creditors' rights and remedies or by other equitable principles of general
application.

         3.4 CAPITALIZATION. The authorized capital stock of the Company
consists of 100,000,000 shares of Common Stock and 5,000,000 shares of preferred
stock; as of June 30, 2002 there were 44,296,149 shares of Common Stock and no
shares of preferred stock issued and outstanding. All of the outstanding shares
of the Company's Common Stock and preferred stock have been validly issued and
are fully paid and nonassessable. Except as set forth in SCHEDULE 3.4, no shares
of capital stock are entitled to preemptive rights; and there are as of June 30,
2002 outstanding options for 3,851,000 shares of Common Stock and outstanding
warrants for shares of Common Stock (excluding the Warrants). Except as set
forth in SCHEDULE 3.4, there are no other scrip, rights to subscribe to, calls
or commitments of any character whatsoever relating to, or securities or rights
exchangeable for or convertible into, any shares of capital stock of the
Company, or contracts, commitments, understandings, or arrangements by which the
Company is or may become bound to issue additional shares of capital stock of
the Company or options, warrants, scrip, rights to subscribe to, or commitments
to purchase or acquire, any shares, or securities or rights convertible or
exchangeable into shares, of capital stock of the Company. Except where such
information has been clearly set forth in the SEC Documents, the Company agrees
to update the information contained in the preceding sentences of this Section
3.4 and in SCHEDULE 3.4 in a certificate delivered to the Holder on a quarterly
basis. Attached hereto as EXHIBIT I is a true and correct copy of the Company's
Amended and Restated Certificate of Incorporation (the "CHARTER") and By-Laws
(the "BY-LAWS"), and the charter and by-laws for each of the Company's
Subsidiaries, each as in effect on the date hereof.

         3.5 ISSUANCE OF CONVERSION SHARES. The Conversion Shares are duly
authorized and reserved for issuance and, upon conversion of the Subordinated
Debenture in accordance with its terms, will be validly issued, fully paid and
non-assessable, free and clear of any and all Liens, and, subject to the
Company's compliance with the then applicable maintenance criteria, eligible for
trading on the Nasdaq SmallCap Market. The Warrant Shares are duly authorized
and reserved for issuance and, upon exercise of the Warrants in accordance with
their respective terms, will be validly issued, fully paid and non-assessable,
free and clear of any and all Liens, and, subject to the Company's compliance
with the then applicable maintenance criteria, eligible for trading on the
Nasdaq SmallCap Market.

         3.6 NO CONFLICTS. Except as set forth on SCHEDULE 3.6 hereto, the
execution, delivery and performance of this Agreement and the other Transaction
Documents by the Company and each of its Subsidiaries that is a party thereto,
and the consummation by the Company and each such Subsidiary of the transactions
contemplated hereby and thereby, do not and will not (i) result in a violation
of the Charter or By-Laws or the charter or by-laws of any such Subsidiary or
(ii) conflict with, or constitute a default (or an event which with notice or
lapse of time or both would become a default) under, or give to others any
rights of termination, amendment, acceleration or cancellation of, any contract
or agreement to which the Company or any such Subsidiary is a party or is bound,
or (iii) result in a violation of any Governmental Requirement. The business of
the Company and its Subsidiaries is being conducted in material compliance with
(a) the Charter and By-Laws and the charter or by-laws of each such Subsidiary,

                                      -12-
<PAGE>

(b) except as set forth on SCHEDULE 3.6 hereto, all Material Contracts and (c)
all Governmental Requirements. Each of the Company and its Subsidiaries (x) has
obtained all consents necessary (including without limitation the consents of
the holders of Senior Debt) and (y) is not required under any Governmental
Requirement to obtain any consent, authorization or order of, or make any filing
or registration with, any Governmental Authority, in order for it, in the case
of either (x) or (y), to execute, deliver or perform any of its obligations
under this Agreement or any other Transaction Document to which it is a party.

         3.7 SEC DOCUMENTS; FINANCIAL STATEMENTS. The Common Stock is registered
pursuant to Section 12(g) of the Exchange Act and the Company has filed, since
December 31, 2001, all reports, schedules, forms, statements and other documents
required to be filed by it with the SEC pursuant to the reporting requirements
of the Exchange Act, including material filed pursuant to Section 13(a) or 15(d)
(all of the foregoing including filings incorporated by reference therein being
referred to herein as the "SEC DOCUMENTS"). As of their respective dates, the
SEC Documents complied in all material respects with the requirements of the
Exchange Act and the rules and regulations of the SEC promulgated thereunder,
and none of the SEC Documents contained any untrue statement of a material fact
or omitted to state a material fact required to be stated therein or necessary
in order to make the statements therein, in light of the circumstances under
which they were made, not misleading. Except as may otherwise be disclosed in
any of the schedules attached hereto, the SEC Documents contain all material
information concerning the Company, and no event or circumstance has occurred
which would require the Company to disclose such event or circumstance in order
to make the statements in the SEC Documents not misleading on the date hereof
or, if different, on the Closing Date but which has not been so disclosed. The
financial statements of the Company included in the SEC Documents comply as to
form and substance in all material respects with applicable accounting
requirements and the published rules and regulations of the SEC or other
applicable rules and regulations with respect thereto. Such financial statements
have been prepared in accordance with GAAP (except (i) as may be otherwise
indicated in such financial statements or the notes thereto or (ii) in the case
of unaudited interim statements, to the extent they may not include footnotes or
may be condensed or summary statements) and fairly present in all material
respects the financial position of the Company as of the dates thereof and the
results of operations and cash flows for the periods then ended (subject, in the
case of unaudited statements, to normal year-end audit adjustments).

         3.8 NO MATERIAL ADVERSE CHANGE. Since December 31, 2001, other than as
disclosed in the Pre-Agreement SEC Documents, no Material Adverse Effect has
occurred or exists, and no event or circumstance has occurred that with notice
or the passage of time or both is reasonably likely to result in a Material
Adverse Effect.

         3.9 NO UNDISCLOSED LIABILITIES. The Company and its Subsidiaries have
no liabilities or obligations not disclosed in the Pre-Agreement SEC Documents
or in any schedule attached hereto, other than those liabilities incurred in the
ordinary course of the Company's or its Subsidiaries' respective businesses
since December 31, 2001, and which are not material to the Company and its
Subsidiaries as a whole.

                                      -13-
<PAGE>

         3.10 NO UNDISCLOSED EVENTS; NO MATERIAL NON-PUBLIC INFORMATION. To the
best knowledge of the Company, no material event or circumstance has occurred or
exists with respect to the Company or its Subsidiaries or their respective
businesses, properties, prospects, operations or financial condition, which,
under applicable law, rule or regulation, requires public disclosure or
announcement by the Company but which has not been so publicly announced or
disclosed, other than as set forth in the schedules attached hereto. The Company
has not directly or indirectly provided to the Holder any material non-public
information that has not been publicly announced or disclosed prior to the date
of this Agreement.

         3.11 SOLICITATION. Neither the Company, nor, to the best of the
Company's knowledge, any of its Affiliates or any Person acting on its or their
behalf has (i) engaged in any form of general solicitation or general
advertising (within the meaning of Regulation D under the Securities Act) in
connection with the offer or exchange of the Subordinated Debenture, the
Subordinated Note or the Conversion Shares or (ii) offered the Subordinated
Debenture or the Subordinated Note to any Person other than the Holder or,
during the six-month period immediately preceding the date of this Agreement,
offered to exchange any securities with a Person who did not, at the time of
such offer, own the securities to be exchanged.

         3.12 NO INTEGRATED OFFERING. Neither the Company nor, to the best of
the Company's knowledge, any of its Affiliates or any Person acting on its or
their behalf has, directly or indirectly, made any offers or sales of any
security or solicited any offers to buy any security, under circumstances that
would require registration of the Securities under the Securities Act. The
issuance of the Securities to the Holder will not be integrated with any other
issuance of the Company's securities (past, current or future) that requires
stockholder approval under the rules of the Nasdaq SmallCap Market.

         3.13 RULE 144(K); NO RESTRICTIVE LEGEND. Assuming that Halifax Fund
L.P. ("HALIFAX") does not become an Affiliate of the Company after the date of
this Agreement, the Company acknowledges and agrees that, as of the Closing Date
and at all times thereafter, the Conversion Shares issuable upon conversion of
the Subordinated Debenture are eligible for public resale by Halifax pursuant to
Rule 144(k) under the Securities Act and that, upon such issuance, the
certificates representing the Conversion Shares will not contain any restrictive
or other legend. Based in part on representations made by Halifax to the
Company, the Company acknowledges that, to the Company's knowledge, Halifax is
not currently an Affiliate of the Company and will not become an Affiliate of
the Company as a result of the consummation of the transactions contemplated by
this Agreement.

         3.14 INTELLECTUAL PROPERTY. The Company and its Subsidiaries each owns
or possesses all Intellectual Property that is necessary or appropriate for the
operation of its businesses as presently conducted and as proposed to be
conducted. The consummation of the transactions contemplated by this Agreement
and the other Transaction Documents will not materially alter or impair,
individually or in the aggregate, any of the Company's rights to any material
Intellectual Property. To the Company's knowledge, none of its planned or
current products or services infringes upon any Intellectual Property of any
other Person, and no claim or litigation is pending or, to the knowledge of the
Company, threatened against the Company contesting its right to sell or
otherwise use any product or material or service which has had or would
reasonably be expected to have a Material Adverse Effect. There is no violation

                                      -14-
<PAGE>

by the Company of the rights of others with respect to any material Intellectual
Property owned or used by the Company. The Company's rights to the material
Intellectual Property owned or used by it are valid and enforceable and no
registration relating thereto has lapsed, expired or terminated or is the
subject of any claim or proceeding that could result in any such lapse,
expiration or termination. The Company and its Subsidiaries each has complied in
all material respects with its obligations pursuant to any agreement relating to
Intellectual Property that are the subject of licenses granted by third parties.

         3.15 SHAREHOLDER RIGHTS PLAN. Neither the acquisition of the Securities
nor the deemed beneficial ownership of shares of Common Stock prior to, or the
acquisition of such shares pursuant to, the conversion of the Subordinated
Debenture or the Warrants will in any event under any circumstance trigger the
poison pill provisions of any stockholders' rights or similar agreements, or a
substantially similar occurrence under any successor or similar plan.

         3.16 NO LITIGATION, PROCEEDINGS, ETC. Except as set forth in SCHEDULE
3.16 or in the Pre-Agreement SEC Documents, there is no material claim,
litigation or administrative proceeding pending, or, to the Company's knowledge,
threatened or contemplated, against the Company or any of its Subsidiaries, or
against any officer, director or employee of the Company or any such Subsidiary
in connection with such person's employment therewith. Neither the Company nor
any of its Subsidiaries is a party to or subject to the provisions of, any
order, writ, injunction, judgment or decree of any court or government agency or
instrumentality that has had or would reasonably be expected to have a Material
Adverse Effect. The legal proceedings described in the Pre-Agreement SEC
Documents have not had and are not reasonably expected to have a Material
Adverse Effect. Neither the Company nor any of its Subsidiaries is the subject
of any pending or, to the Company's knowledge, threatened inquiry, investigation
or administrative or legal proceeding by the Internal Revenue Service, the
taxing authorities of any state or local jurisdiction, the SEC or any state
securities commission or other governmental or regulatory entity.

         3.17 BROKERS. The Company has taken no action that would give rise to
any claim by any Person for brokerage commissions, finder's fees or similar
payments by the Company or the Holder relating to this Agreement or the
transactions contemplated hereby.

         3.18 ACKNOWLEDGEMENT OF DILUTION. The number of shares of Common Stock
constituting Conversion Shares and Warrant Shares may increase in certain
circumstances. The Company acknowledges that its obligation to issue Conversion
Shares upon conversion of the Subordinated Debenture and Warrant Shares upon
exercise of the Warrants is absolute and unconditional, regardless of the
dilution that such issuance may have on other shareholders of the Company.

         3.19 OTHER HOLDERS. Except as set forth on SCHEDULE 3.19, there are no
outstanding securities issued by the Company that are entitled to registration
rights under the Securities Act. Except as set forth in SCHEDULE 3.19, there are
no outstanding securities issued by the Company that are directly or indirectly
convertible into, exercisable into, or exchangeable for, shares of Common Stock
of the Company, or that have anti-dilution, reset or similar rights that would
be triggered by the issuance of the Subordinated Debenture, the Conversion
Shares or the Warrant Shares.

                                      -15-
<PAGE>

         3.20 CERTAIN TRANSACTIONS. Except as disclosed in the Pre-Agreement SEC
Documents, none of the officers, directors, or employees of the Company is
presently a party to any transaction with the Company or any of its Subsidiaries
(other than for services as employees, officers and directors), including any
contract, agreement or other arrangement providing for the furnishing of
services to or by, providing for rental of Property to or from, or otherwise
requiring payments to or from any officer, director or such employee or, to the
knowledge of the Company, any corporation, partnership, trust or other entity in
which any officer, director, or any such employee has a substantial interest or
is an officer, director, trustee or partner.

         3.21 PERMITS; COMPLIANCE. The Company and each of its Subsidiaries is
in possession of all franchises, grants, authorizations, licenses, permits,
easements, variances, exemptions, consents, certificates, approvals and orders
necessary to own, lease and operate its properties and to carry on its business
as it is now being conducted (collectively, the "COMPANY PERMITS") other than
those Company Permits which the failure to possess would not have a Material
Adverse Effect, and there is no action pending or, to the knowledge of the
Company, threatened regarding suspension or cancellation of any of the Company
Permits except for such Company Permits the cancellation or suspension of which
would not, individually or in the aggregate, have a Material Adverse Effect. To
the best of the Company's knowledge, neither the Company nor any of its
Subsidiaries is in material conflict with, or in material default or material
violation of, any of the Company Permits. Since December 31, 2001, neither the
Company nor any of its Subsidiaries has received any notification with respect
to possible material conflicts, material defaults or material violations of any
Governmental Requirement.

         3.22 INSURANCE. The Company and each of its Subsidiaries are insured by
insurers of recognized financial responsibility against such losses and risks
and in such amounts as management of the Company believes to be prudent and
customary in the businesses in which the Company and its direct and indirect
Subsidiaries are engaged. Neither the Company nor any such Subsidiary has any
reason to believe that it will not be able to renew its existing insurance
coverage as and when such coverage expires or to obtain similar coverage from
similar insurers as may be necessary to continue its business without a
significant increase in cost.

         3.23 INTERNAL ACCOUNTING CONTROLS. The Company and each of its
Subsidiaries maintain a system of internal accounting controls sufficient, in
the judgment of the Company's board of directors, to provide reasonable
assurance that (i) transactions are executed in accordance with management's
general or specific authorizations, (ii) transactions are recorded as necessary
to permit preparation of financial statements in conformity with GAAP and to
maintain asset accountability, (iii) access to assets is permitted only in
accordance with management's general or specific authorization and (iv) the
recorded accountability for assets is compared with existing assets at
reasonable intervals and appropriate action is taken with respect to any
differences.

         3.24 ENVIRONMENTAL MATTERS. Except as described on SCHEDULE 3.24 or as
otherwise disclosed in the Pre-Agreement SEC Documents, (i) the Company and its
Subsidiaries have no environmental liabilities, nor do any factors exist that
are reasonably likely to give rise to any environmental liability, affecting any
of the properties of the Company or any of its Subsidiaries that, individually
or in the aggregate, has had or would reasonably be expected to have a Material
Adverse Effect and (ii) neither the Company nor any of the Subsidiaries has

                                      -16-
<PAGE>

violated any environmental law applicable to it now or previously in effect,
other than such violations or infringements that, individually or in the
aggregate, have not had and would not reasonably be expected to have a Material
Adverse Effect. The Company has provided to the Holder, on or before the date of
this Agreement, copies of all reports and surveys rendered by third parties that
relate to environmental matters concerning the Company or any of its
Subsidiaries, and will, on or before the Closing Date, provide the Holder with a
reliance letter or letters permitting the Holder to rely thereon as though an
original addressee thereof.

         3.25     SOLVENCY.

                  (i)      Based on the financial condition of the Company and
                           its Subsidiaries on a consolidated basis (the
                           "CONSOLIDATED GROUP") as of the Closing Date, the
                           Consolidated Group's fair saleable value of its
                           assets exceeds the amount that will be required to be
                           paid on or in respect of the Consolidated Group's
                           existing debts and other liabilities (including
                           contingent liabilities) as they mature.

                  (ii)     Based on the financial condition of the Consolidated
                           Group as of the Closing Date, the Consolidated
                           Group's assets do not constitute unreasonably small
                           capital to carry out its business as now conducted
                           and as proposed to be conducted including the
                           Consolidated Group's capital needs taking into
                           account the particular capital requirements of the
                           business conducted by the Consolidated Group, and
                           projected capital requirements and capital
                           availability thereof.

                  (iii)    The Consolidated Group does not intend to incur debts
                           beyond its ability to pay such debts as they mature
                           (taking into account the timing and amounts of cash
                           to be payable on or in respect of its debt). Based on
                           the financial condition of the Consolidated Group as
                           of the Closing Date, the current cash flow of the
                           Consolidated Group, were it to liquidate all of its
                           assets, after taking into account all anticipated
                           uses of the cash, would be sufficient to pay all
                           amounts on or in respect of its debt when such
                           amounts are required to be paid.

                  (iv)     The Consolidated Group does not intend, and does not
                           believe, that final judgments against the
                           Consolidated Group in actions for money damages will
                           be rendered at a time when, or in an amount such
                           that, the Consolidated Group will be unable to
                           satisfy any such judgments promptly in accordance
                           with their terms (taking into account the maximum
                           reasonable amount of such judgments in any such
                           actions and the earliest reasonable time at which
                           such judgments might be rendered). The Consolidated
                           Group's cash flow, after taking into account all

                                      -17-
<PAGE>

                           other anticipated uses of the cash (including the
                           payments on or in respect of debt referred to in
                           paragraph (iii) above), will at all times be
                           sufficient to pay all such judgments promptly in
                           accordance with their terms.

                  (v)      Neither the Company nor any of its Subsidiaries is
                           subject to any bankruptcy, insolvency or similar
                           proceeding.

         3.26 TAXES. The Company has filed all federal, state, city and other
tax returns, reports and declarations required to be filed by or on behalf of
the Company and of its Subsidiaries and such returns are complete and accurate
and disclose all taxes (whether based upon income, operations, purchases, sales,
payroll, licenses, compensation, business, capital, properties or assets or
otherwise) required to be paid in the periods covered thereby. Copies of such
returns for certain tax years have been provided to the Holder to the extent
requested by the Holder. All taxes shown on such returns and any deficiency
assessments, penalties and interest have been paid, or will be paid when due or
are being contested in good faith. All taxes required to be withheld by or on
behalf of the Company or any such Subsidiary in connection with amounts paid or
owing to any employees, independent contractor, creditor or other party have
been withheld, and such withheld taxes have either been duly and timely paid to
the proper governmental authorities or set aside in accounts for such purposes.

         3.27 TITLE TO PROPERTIES; ENCUMBRANCES. SCHEDULE 3.27 hereto contains a
complete and accurate list of all real Property, leaseholds, or other real
estate interests owned or leased by the Company or its Subsidiaries
(collectively, the "REAL PROPERTY"). Each of the Company and its Subsidiaries
has good and marketable title (in fee simple in the case of Real Property) to
all of the Properties that it purports to own. Except for Permitted Liens, all
Properties of the Company and any of its Subsidiaries are free and clear of all
Liens and are not subject to any rights of way, building use restrictions,
exceptions, variances, reservations or limitations of any nature. None of the
Clean Earth Intellectual Property includes any Intellectual Property that the
Company has theretofore used in conducting any of its business or operations
other than the business and operations conducted by the Clean Earth Entities.

         3.28 NO RELIANCE ON HOLDER. The Company acknowledges and agrees that
the Holder is acting solely in an arm's length capacity, and is not acting as a
financial advisor or fiduciary of the Company or any of its Subsidiaries (or in
any similar capacity), with respect to this Agreement and the other Transaction
Documents and the performance of the transactions contemplated hereby and
thereby. The Company further acknowledges that the Company's decision to enter
into this Agreement and the other Transaction Documents has been based solely on
the independent evaluation by the Company and its representatives, and not on
any representation made by the Holder (other than those specifically made
herein).

         3.29 ILLEGAL PAYMENTS. Neither the Company, nor any director, officer,
agent, employee or other Person acting on behalf of the Company or any
Subsidiary of the Company has, in the course of acting for, or on behalf of, the
Company, directly or indirectly used any corporate funds for any unlawful
contribution, gift, entertainment or other unlawful expenses relating to
political activity; directly or indirectly made any direct or indirect unlawful
payment to any foreign or domestic government or party official or employee from
corporate funds; violated or is in violation of any provision of the U.S.

                                      -18-
<PAGE>

Foreign Corrupt Practices Act of 1977, as amended, or any similar treaties of
the United States; or directly or indirectly made any bribe, rebate, payoff,
influence payment, kickback or other unlawful payment to any foreign or domestic
government or party official or employee.

         3.30 MFN AND VARIABLE RATE TRANSACTIONS. Except as set forth in
SCHEDULE 3.30, the Company is not currently a party to any MFN Transaction or
Variable Rate Transaction (other than the Subordinated Debenture), pursuant to
which securities or potential obligations to issue securities are still
outstanding.

         3.31 CLEAN EARTH SALE. The Company and the Clean Earth Purchaser have
executed and delivered the Clean Earth Purchase Agreement in the final form
thereof furnished to the Holder by the Company. Except as set forth on SCHEDULE
3.31 hereto, the Company has obtained all consents, approvals, waivers and
authorizations necessary in order to consummate the closing of the Clean Earth
Sale and such closing has occurred.

         3.32 MORTGAGE. Upon the filing of the Mortgage with the appropriate
Governmental Authority, the Mortgage will constitute and grant to the Holder a
valid, perfected lien on the Mortgaged Property, not subject to any other Lien
other than Permitted Liens, or any claim by any third party that would adversely
affect the security interest granted thereby.

4.       REPRESENTATIONS AND WARRANTIES OF THE HOLDER. The Holder hereby makes
the following representations and warranties to the Company, as of the date of
this Agreement and, if different, as of the Closing Date, and, with respect to
Section 4.6, agrees with the Company that:

         4.1 AUTHORIZATION; ENFORCEMENT. The Holder has the requisite power and
authority to enter into and perform this Agreement and the other Transaction
Documents to which it is a party. The execution and delivery of this Agreement
and such other Transaction Documents by the Holder and the consummation by it of
the transactions contemplated hereby and thereby have been duly authorized by
all necessary corporate or partnership action. Each of this Agreement and the
other Transaction Documents to which the Holder is a party constitutes a valid
and binding obligation of the Holder enforceable against the Holder in
accordance with its terms, except as such enforceability may be limited by
applicable bankruptcy, insolvency, reorganization, moratorium, liquidation or
similar laws relating to, or affecting generally the enforcement of creditors'
rights and remedies or by other equitable principles of general application.

         4.2 NO CONFLICTS. The execution, delivery and performance of this
Agreement and the other Transaction Documents to which the Holder is a party and
the consummation by the Holder of the transactions contemplated hereby and
thereby do not and will not (i) result in a violation of the Holder's
organizational documents, or (ii) conflict with any agreement, indenture or
instrument to which the Holder is a party, or (iii) result in a violation of any
Governmental Requirement applicable to the Holder. The Holder is not required to
obtain any consent or authorization of any Governmental Authority in order for
it to perform its obligations under this Agreement and the other Transaction
Documents.

         4.3 INFORMATION. The Holder has had the opportunity to review the
Company's annual report on Form 10-K for its fiscal year ended December 31,

                                      -19-
<PAGE>

2001, its quarterly reports on Form 10-Q for the fiscal quarters ended March 31,
2002 and June 30, 2002, and all other reports or documents filed electronically
by the Company pursuant to Section 13(a) or 15(d) of the Exchange Act prior to
the second (2nd) Business Day immediately preceding the date of this Agreement
(the "PRE-AGREEMENT SEC DOCUMENTS"). Subject to the provisions of Section 3.10
hereof, the Holder acknowledges that the Company has made available to the
Holder the opportunity to examine such additional documents from the Company and
to ask questions of, and receive full answers from, the Company concerning,
among other things, the Company, its financial condition, its management, its
prior activities and any other information which the Holder considers relevant
or appropriate in connection with entering into this Agreement and the other
Transaction Documents.

         4.4 ABILITY TO BEAR ECONOMIC RISK. The Holder is an "accredited
investor" within the meaning of Regulation D under the Securities Act, and it
(i) is able to bear the economic risk of its investment in the Subordinated
Debenture and the Subordinated Note, (ii) is able to hold the Subordinated
Debenture and the Subordinated Note for an indefinite period of time and (iii)
can afford a complete loss of its investment in the Subordinated Debenture and
the Subordinated Note.

         4.5 NO AFFILIATE. The Holder is not an Affiliate of the Company and
will not become an Affiliate of the Company as a result of the consummation of
the transactions contemplated by this Agreement.

         4.6 RISKS OF OWNERSHIP OF THE SUBORDINATED DEBENTURE AND THE
SUBORDINATED NOTE. The Holder acknowledges and agrees that, except as provided
in the Registration Rights Agreement, the Securities have not been and are not
being registered under the Securities Act and may not be transferred or resold
(i) without registration under the Securities Act or unless pursuant to an
exemption therefrom and (ii) except in compliance with applicable law. The
Holder is familiar with the provisions of Rule 144 and understands that in the
event all of the applicable requirements of Rule 144 are not satisfied,
registration under the Securities Act or some other exemption from the
registration requirements of the Securities Act will be required in order to
dispose of the Subordinated Debenture and the Subordinated Note, and that the
Holder may be required to hold the Subordinated Debenture and the Subordinated
Note for a significant period of time prior to reselling them, subject to the
Company successfully registering the Conversion Shares pursuant to the
Registration Rights Agreement. The Holder is capable of assessing the risks of
an investment in the Subordinated Debenture and the Subordinated Note and is
fully aware of the economic risks thereof. The Holder acknowledges that the
Company's operating results have in the past and may in the current period and
in future periods not meet the expectations of securities analysts and that
failure to meet the expectations would be likely to have a material adverse
effect on the trading price and salability of the Conversion Shares.

         4.7 OWNERSHIP REPRESENTATION. The Holder has acquired the Subordinated
Debenture, the Subordinated Note and the Warrants for its own account and not
with a view to distribution in violation of any securities laws. The Holder has
no present intention to sell the Securities in violation of federal or state
securities laws and the Holder has no present arrangement (whether or not
legally binding) to sell the Securities to or through any person or entity.

                                      -20-
<PAGE>

         4.8 LEGEND. The Holder understands that the certificates representing
the Securities may bear at issuance a restrictive legend in substantially the
following form:

         "The securities represented by this certificate have not been
         registered under the Securities Act of 1933, as amended (the
         "SECURITIES ACT"), or the securities laws of any state, and may not be
         offered or sold unless a registration statement under the Securities
         Act and applicable state securities laws shall have become effective
         with regard thereto, or an exemption from registration under the
         Securities Act and applicable state securities laws is available in
         connection with such offer or sale."

                  Notwithstanding the foregoing, it is agreed that, as long as
(A) the resale or transfer (including without limitation a pledge) of any of the
Securities is registered pursuant to an effective registration statement, (B)
such Securities have been sold pursuant to Rule 144 under the Securities Act or
any successor provision ("RULE 144"), and the Holder provides the Company with
customary seller's and broker's representation letters, or (C) such Securities
are eligible for resale under Rule 144(k) or any successor provision, such
Securities shall be issued without any legend or other restrictive language and,
with respect to Securities upon which such legend is stamped, the Company shall
issue new certificates without such legend to the Holder upon request.

         4.9 NO PUBLIC SOLICITATION. At no time was the Holder presented with or
solicited by any general mailing, leaflet, public promotional meeting, newspaper
or magazine article, radio or television advertisement in connection with the
Exchange or the Repurchase.

         4.10 RELIANCE BY THE COMPANY. The Holder understands that the
Subordinated Debenture and the Subordinated Note are being exchanged or
repurchased, as the case may be, in reliance on transactional exemptions from
the registration requirements of federal and state securities laws and that the
Company is relying upon the truth and accuracy of the representations,
warranties, agreements, acknowledgments and understandings of the Holder set
forth herein in order to determine the applicability of such exemptions and the
suitability of the Holder to acquire the Subordinated Debenture and the
Subordinated Note.

5.       COVENANTS OF THE COMPANY AND THE HOLDER.

         5.1 EXCHANGE ACT REGISTRATION; LISTING. At all times while the
Subordinated Debenture or Warrants are outstanding, or while the Holder holds
any shares of Common Stock issued under the Subordinated Debenture or Warrants,
the Company (i) will cause the Common Stock to be registered at all times under
Section 12(g) of the Exchange Act, will comply in all respects with its
reporting and filing obligations under the Exchange Act, and will not take any
action or file any document (whether or not permitted by the Exchange Act or the
rules thereunder) to terminate or suspend such reporting and filing obligations,
(ii) shall continue the listing or trading of the Common Stock on an Approved
Market and comply in all respects with the Company's reporting, filing and other
obligations under the By-Laws or rules of the Approved Market on which the
Common Stock is then listed or traded and (iii) in the event that the Common
Stock is not listed or traded on the Nasdaq SmallCap or National Market Systems,
and thereafter the Company meets the requirements for inclusion of the Common
Stock on either such system, shall use commercially reasonable efforts to obtain
such inclusion as soon as reasonably practicable following the date on which it
meets such requirements.

                                      -21-
<PAGE>

         5.2 TITLE INSURANCE; GUARANTEE OF MORTGAGOR'S OBLIGATIONS. The Company,
or the Holder on behalf of the Company, shall obtain, prior to the Closing, at
the Company's sole cost and expense, a title insurance policy covering the
Mortgaged Property from a title company reasonably acceptable to the Holder and
in form and substance satisfactory to the Holder, containing only such title
exceptions and/or such endorsements or affirmative coverages that are acceptable
to the Holder in its sole and absolute discretion, which endorsements shall
include, without limitation, ALTA 3.1 zoning (including parking), separate tax
lot, subdivision, land same as survey, address, deletion of arbitration,
creditors' rights, environmental lien, lender's comprehensive, access,
contiguity and encroachment (the "TITLE POLICY"). The Company hereby
unconditionally and irrevocably guarantees the performance by USPL Ltd. of its
obligations under the Mortgage and hereby waives, in connection with such
guarantee, promptness, diligence, presentment, demand of payment or performance,
protest, or notice of dishonor, nonpayment or nonperformance of any of such
obligations.

         5.3 EXPENSES. The Company and the Holder each shall pay all reasonable
costs and expenses that it incurs in connection with the negotiation, execution,
delivery and performance of this Agreement; PROVIDED, HOWEVER, that the Company
shall pay in immediately available funds, at the Closing and promptly upon
receipt of any further invoices relating to same, for (i) all reasonable
out-of-pocket expenses (including without limitation reasonable legal fees and
expenses) incurred by the Holder in connection its due diligence investigation
of the Company and the negotiation, preparation, execution, delivery and
performance of this Agreement and the other Transaction Documents in an amount
not to exceed ninety thousand dollars ($90,000), and (ii) all of the costs of
obtaining the Title Policy (including, without limitation, the cost of all title
endorsements and any other cost of obtaining so-called "extended title coverage"
and all other title charges and all recording and other fees charged by the
title company and any applicable Governmental Authority). At the Closing, the
Company shall pay the amount due for such fees and expenses (which may include
fees and expenses estimated to be incurred for completion of the transaction
including post-closing matters). In the event the amount so paid by the Company
is less than the actual reasonable fees and expenses, the Company shall promptly
pay such deficiency within thirty (30) days following receipt of an invoice
regarding same.

         5.4 RESTRICTED PAYMENTS. As long as any Obligations are outstanding,
the Company will not, nor will it permit any Subsidiary of the Company to, make
any Restricted Payment, except that:

                  (a) the Company may make regularly scheduled payments of
principal and interest accrued on any Subordinated Debt if and to the extent
(but only if and to the extent) permitted by the express terms of the
Subordinated Debt Documents governing such Subordinated Debt, which terms shall
have been expressly approved in writing by the Holder; and

                  (b) Subsidiaries of the Company may make Restricted Payments
to the Company;

                                      -22-
<PAGE>

PROVIDED, HOWEVER, that no Restricted Payments may be made pursuant to clause
(a) above if an Event of Default (as defined in the Subordinated Debenture or
the Subordinated Note) exists at the time of such Restricted Payment or would
result therefrom.

         5.5 TRANSACTIONS WITH AFFILIATES. As long as any Obligations are
outstanding, the Company will not, nor will it permit any Subsidiary of the
Company to, enter into any transaction, including, without limitation, the
purchase, sale or exchange of Property or the rendering of any service, with any
Affiliate or employee of the Company., except (a) in the ordinary course of
business and upon fair and reasonable terms no less favorable to the Company or
such Subsidiary than would obtain in a comparable arm's-length transaction with
a Person not an Affiliate or employee of the Company, (b) payments of the type
expressly excluded from the definition of Restricted Payments in clause (d) of
said definition, and (c) as set forth on SCHEDULE 5.5 hereto.

         5.6 DISPOSITION OF PROPERTY, SECURITIES. As long as any Obligations are
outstanding, the Company will not, nor will it permit any Subsidiary of the
Company to, sell, lease, assign, transfer or otherwise dispose of any Property
to any Person (including without limitation any Affiliate of the Company or any
such Subsidiary), except (i) dispositions of inventory by the Company and its
Subsidiaries in the ordinary course of business, (ii) expenditures of money
(including, without limitation, money held in deposit accounts and capital
expenditures) made in the ordinary course of business or for the purpose of
making Restricted Payments expressly permitted in accordance with this
Agreement, (iii) the sale of the common stock of Clean Earth and the Clean Earth
Intellectual Property to the Clean Earth Purchaser pursuant to the Clean Earth
Purchase Agreement, (iv) encumbrances in the form of Permitted Liens and (v)
dispositions of Property permitted under the Restated Security Agreement. As
long as any Obligations are outstanding, the Company will not sell, lease,
assign, transfer or otherwise dispose of (including without limitation by way of
pledge or hypothecation) any shares of capital stock of any of its Subsidiaries,
or permit any of its Subsidiaries to issue any shares of capital stock to any
Person other than the Company.

         5.7 [intentionally omitted]

         5.8 NO DEBT, LIENS; CAPITAL EXPENDITURES LIMITATION. As long as any
Obligations are outstanding, the Company shall refrain, and shall ensure that
each of its Subsidiaries refrains, from (i) incurring any Debt other than
Permitted Debt and Subordinated Debt, (ii) granting, establishing or maintaining
any Lien on any of its assets, including without limitation any pledge of
securities owned or held by it (including without limitation any securities
issued by any such Subsidiary), other than Permitted Liens, and (iii) making
capital expenditures (including payments under capital leases) during a
particular period in an amount that exceeds, in the aggregate, the amount
permitted by the terms of the Senior Credit Facility for such period; PROVIDED,
HOWEVER, that if the Senior Credit Facility expires or is terminated, and is not
replaced with a credit facility that by its terms limits the Company's capital
expenditures, the Company will be bound, while any Obligations are outstanding,
by the limit on capital expenditures that was in effect immediately prior to the
expiration or termination, as the case may be, of the Senior Credit Facility.

         5.9 QUOTATION ON NASDAQ. The Company shall (i) take such action as may
be necessary to include all of the Conversion Shares and Warrant Shares that may
be issued by the Company under the Subordinated Debenture and the Warrants on

                                      -23-
<PAGE>

the Nasdaq SmallCap Market immediately following the Closing, and (ii) as long
as the Holder owns any Securities, use its commercially reasonable efforts to
maintain the designation and quotation, or listing, of the Common Stock on an
Approved Market for a minimum of two (2) years following the Closing Date.
Within 30 days after the date of this Agreement (a) the Company and the Holder
and their respective counsel shall review the provisions of the Warrants to
determine whether an amendment (similar to the language contained in Section
3(e)(i) of the Subordinated Debenture) to some or all of the Warrants is
required in order to comply with the Nasdaq corporate governance rules
concerning shareholder approval of issuances of stock and (b) to the extent that
the parties determine that such amendment is required, the Company and the
Holder shall amend such Warrants on mutually agreeable terms.

         5.10 USE OF HOLDER NAME. Except as set forth on SCHEDULE 5.10 hereto or
as may be required by applicable law, the Company shall not use, directly or
indirectly, the Holder's name or the name of any of its Affiliates in any
advertisement, announcement, press release or other similar communication unless
it has received the prior written consent of the Holder for the specific use
contemplated or as otherwise required by applicable law or regulation.

         5.11 COMPANY'S INSTRUCTIONS TO TRANSFER AGENT. On or prior to the
Closing Date, the Company shall execute and deliver irrevocable written
instructions to the transfer agent for its Common Stock (the "TRANSFER AGENT"),
and provide the Holder with a copy thereof, directing the Transfer Agent (i) to
issue certificates representing Conversion Shares upon conversion of the
Subordinated Debenture and receipt of a valid Conversion Notice (as defined in
the Subordinated Debenture) from the Holder, in the amount specified in such
Conversion Notice, in the name of the Holder or its nominee, (ii) to issue
certificates representing Warrant Shares upon exercise of the Warrants and (iii)
to deliver such certificates to the Holder no later than the close of business
on the third (3rd) business day following the related Conversion Date (as
defined in the Subordinated Debenture) or Exercise Date (as defined in the
Warrants), as the case may be. The certificates for the Warrant Shares issuable
upon exercise of the 2001 Warrants may bear a restrictive legend until the
second anniversary of the issue date of the 2001 Warrants (or any other period
that may apply in the event that Rule 144(k) under the Securities Act is
amended), which legend will be removed at any time after such second anniversary
(or after the expiration of such other period) upon the Holder's request and
satisfaction of the requirements of Rule 144(k), or if such Warrant Shares are
sold prior to such second anniversary pursuant to Rule 144 under the Securities
Act and customary representation letters are provided to the Company, provided
that in either such case that such Warrant Shares were issued pursuant to the
cashless exercise provisions of the applicable Warrant. The Company shall
instruct the transfer agent that, in lieu of delivering physical certificates
representing Conversion Shares or Warrant Shares to the Holder, and as long as
(i) the Transfer Agent is a participant in the Depository Trust Company ("DTC")
Fast Automated Securities Transfer program, (ii) the Holder has not informed the
Company that it wishes to receive physical certificates therefor, and (iii) no
legend is required by the terms of this Agreement to appear on any physical
certificate if issued, the Transfer Agent may effect delivery of Conversion

                                      -24-
<PAGE>

Shares or Warrant Shares, as the case may be, by crediting the account of the
Holder or its nominee at DTC for the number of shares for which delivery is
required hereunder within the time frame specified above for delivery of
certificates. The Company represents to and agrees with the Holder that it will
not give any instruction to the Transfer Agent that will conflict with the
foregoing instruction or otherwise restrict the Holder's right to convert the
Subordinated Debenture or to receive Conversion Shares in accordance with the
terms of the Subordinated Debenture or to exercise the Warrant or to receive
Warrant Shares upon exercise of the Warrants. In the event that the Company's
relationship with the Transfer Agent should be terminated for any reason, the
Company shall use its best efforts to cause the Transfer Agent to continue
acting as transfer agent pursuant to the terms hereof until such time that a
successor transfer agent is appointed by the Company and receives the
instructions described above.

         5.12 CHICAGO PROPERTY MORTGAGE. In the event that the Company, directly
or indirectly, through one of its Subsidiaries or otherwise, purchases the
Chicago Property, the Company will, or will cause such Subsidiary to, within
thirty (30) days of such purchase, execute and deliver to the Holder a mortgage
covering the Chicago Property (the "CHICAGO PROPERTY MORTGAGE"), record the
Chicago Property Mortgage with the appropriate Governmental Authority, and pay
all recordation fees and taxes in connection therewith. The Holder agrees, if
requested by the holders of the Senior Debt and the holder(s) of any purchase
money Debt with respect to the Chicago Property, to enter into one or more
intercreditor agreements with such holder(s) pursuant to which the Chicago
Property Mortgage will be subordinated to any liens on the Chicago Property in
favor of such holders. The Chicago Property Mortgage will be in substantially
the form of the Mortgage, with such changes as may be required in order to
comply with applicable law or practice, and will be executed, delivered and
filed promptly following the Company's purchase of the Chicago Property. Prior
to the execution, delivery and recordation of the Chicago Property Mortgage, the
Company, or the Holder on behalf of the Company, shall obtain, at the Company's
sole cost and expense, a title insurance policy covering the Chicago Property
from a title company reasonably acceptable to the Holder and in form and
substance reasonably satisfactory to the Holder, containing only such title
exceptions and/or such endorsements or affirmative coverages that are reasonably
acceptable to the Holder and consistent with those contained in the Mortgage.

         5.13 RESERVATION OF COMMON STOCK. The Company shall, on the Closing
Date, have authorized and reserved for issuance, free from any preemptive
rights, a number of shares of Common Stock at least equal to one hundred and
fifty percent (150%) of the maximum number of shares of Common Stock issuable
upon (A) conversion of the Subordinated Debenture in full at the Conversion
Price then in effect and (B) exercise of the outstanding Warrants in full at the
Exercise Price then in effect, in each such case without regard to any
limitation or restriction on such conversion or exercise that may be set forth
therein (the "RESERVED AMOUNT"). In the event that, as a result of an adjustment
to the Conversion Price or the Exercise Price (pursuant to anti-dilution
adjustments or otherwise), the Reserved Amount is less than 125% of the number
of shares of Common Stock then issuable upon conversion of all of the
Subordinated Debenture and exercise of all of the Warrants (without regard to
any limitation or restriction on such conversion or exercise that may be set
forth therein), the Company shall as soon as practicable (but in no event later
than the tenth (10th) business day or, in the event that stockholder approval is
required, the sixtieth (60th) day following such date) increase the Reserved
Amount to no less than 150% of the number of shares of Common Stock into which
the Subordinated Debenture is then convertible and such outstanding Warrants are
exercisable without regard to any limitation or restriction on such conversion

                                      -25-
<PAGE>

or exercise that may be set forth therein. The Company shall not reduce the
number of shares reserved for issuance hereunder without the written consent of
the Holder. In the event the Holder shall sell or otherwise transfer any portion
of the Subordinated Debenture or the Warrants, each transferee shall be
allocated a PRO RATA portion of the Holder's Reserved Amount.

         5.14 FORM 8-K. The Company agrees that it will file with the SEC a Form
8-K describing the terms of the transactions contemplated by this Agreement and
the other Transaction Documents, with this Agreement attached to such Form 8-K
as an exhibit thereto, on or before the fifth (5th) Business Day following the
Closing Date in the form required by the Exchange Act; PROVIDED, that the Holder
shall have a reasonable opportunity to review and comment on any such press
release or Form 8-K prior to the issuance or filing thereof.

         5.15 CONTINUING COVENANTS. Except as provided in Section 8.11, the
Company agrees that it will, as long as the Holder or any of its Affiliates
beneficially owns any Securities:

                  (a) maintain its corporate existence in good standing such
that the Company shall at all times be in compliance with Section 3.1 hereof as
if such Section were a continuing covenant of the Company;

                  (b) SECTION 8.3 MAINTENANCE OF PROPERTIES AND
LICENSESmaintain, keep and preserve all of its Properties necessary in the
proper conduct of its businesses in good repair, working order and condition
(ordinary wear and tear excepted), make all necessary repairs, renewals and
replacements and improvements thereto, except where the failure to do so would
not reasonably be expected to have, individually or in the aggregate, a Material
Adverse Effect and maintain insurance covering such Properties against such
losses and risks and in such amounts as management of the Company believes to be
prudent and customary in the businesses in which the Company and its
Subsidiaries are engaged;

                  (c) SECTION 8.4 TAXES AND CLAIMSpay or discharge before
becoming delinquent (i) all taxes, levies, assessments and governmental charges
imposed on it or its income or profits or any of its Property and (ii) all
lawful claims for labor, material and supplies, which, if unpaid, might become a
Lien upon any of its Property, except where the failure to do so would not
reasonably be expected to have, individually or in the aggregate, a Material
Adverse Effect; PROVIDED, HOWEVER, that the Company shall not be required to pay
or discharge any tax, levy, assessment or governmental charge, or claim for
labor, material or supplies, whose amount, applicability or validity is being
contested in good faith by appropriate proceedings being diligently pursued and
for which adequate reserves have been established under GAAP;

                  (d) comply with all Governmental Requirements applicable to
the operation of its business, except for instances of noncompliance that would
not reasonably be expected to have, individually or in the aggregate, a Material
Adverse Effect;

                  (e) SECTION 8.9 COMPLIANCE WITH AGREEMENTS as long as any
Obligations are outstanding, comply with all agreements, documents and
instruments binding on it or affecting its Properties or business, including,
without limitation, all Material Contracts, except for instances of
noncompliance that would not reasonably be expected to have, individually or in
the aggregate, a Material Adverse Effect;

                  (f) provide the Holder with copies of all materials sent to
its stockholders, in each such case promptly after the filing thereof with the
SEC; and

                                      -26-
<PAGE>

                  (g) timely file with the SEC all reports required to be filed
pursuant to the Exchange Act and refrain from terminating its status as an
issuer required by the Exchange Act to file reports thereunder even if the
Exchange Act or the rules or regulations thereunder would permit such
termination.

         5.16 INTERCREDITOR AGREEMENT. The Holder acknowledges that the
Obligations and the Liens granted (or to be granted) to the Holder in certain
Property of the Company and its Subsidiaries (collectively, the "JUNIOR LIENS")
are subject to the Restated Intercreditor Agreement. The Holder further agrees
that if the Company and its Subsidiaries refinance or replace the entire Senior
Credit Facility and all or any part of the balance of the Senior Debt (within
the parameters of the definition of "Permitted Debt") with the proceeds of one
or more loans (the "SENIOR DEBT REPLACEMENT LOANS") from one or more financial
institutions ("REPLACEMENT LENDERS"), (i) the Obligations shall be junior in
priority to the Senior Debt Replacement Loans, (ii) all Junior Liens shall be
junior to the Liens granted to the Replacement Lenders in the Property of the
Company and its Subsidiaries to secure the Senior Debt Replacement Loans, and
(iii) in order to evidence such subordination, the Holder shall execute and
deliver to the Replacement Lenders one or more intercreditor and subordination
agreements substantially the same as or similar to the Restated Intercreditor
Agreement and to any intercreditor agreement(s) entered into pursuant to Section
5.12 hereof; provided, however, that the Holder's refusal to execute and deliver
an intercreditor and subordination agreement under this clause (iii) shall in no
way limit the validity and enforceability of the foregoing clauses (i) and (ii).
This Section 5.16 shall also apply in the case of any subsequent refinancing or
replacement of the Senior Debt Replacement Loans (within the parameters of the
definition of "Permitted Debt").

         5.17 SUBSIDIARY GUARANTEE. The Company shall cause each of its
Subsidiaries (other than the Clean Earth Entities) to execute and deliver the
Subsidiary Guarantee and, upon the formation or acquisition of any additional
Subsidiary or Subsidiaries while any of the Obligations are outstanding, shall
cause each such additional Subsidiary to execute and deliver the Subsidiary
Guarantee promptly following such formation or acquisition.

         5.18 OUTSTANDING LEGAL FEES. The Company shall pay, at or prior to the
Closing, pursuant to a mutual settlement, all outstanding legal fees and
expenses charged to it by Kleinberg, Kaplan, Wolff & Cohen, P.C.

         5.19 NOTICE OF DEFAULT. The Company shall notify the Holder (a)
immediately upon the occurrence of an Event of Default, and (b) immediately upon
becoming aware of an event or circumstance that with the giving of notice or
lapse of time, or both, would constitute an Event of Default.

6.       CONDITIONS TO CLOSING.

         6.1 CONDITIONS TO HOLDER'S OBLIGATIONS AT THE CLOSING. The Holder's
obligation to effect the Closing are conditioned upon the satisfaction (or
waiver by the Holder) of each of the following events as of the Closing Date:

                                      -27-
<PAGE>

                  6.1.1    the representations and warranties of the Company set
                           forth in this Agreement, and the representations and
                           warranties of the Company's Subsidiaries made in the
                           Subsidiary Guarantee, shall be true and correct in
                           all material respects as of such date as if made on
                           such date (except that to the extent that any such
                           representation or warranty relates to a particular
                           date, such representation or warranty shall be true
                           and correct in all respects as of that particular
                           date);

                  6.1.2    the Company shall have complied with or performed in
                           all material respects all of the agreements,
                           obligations and conditions set forth in this
                           Agreement and the other Transaction Documents that
                           are required to be complied with or performed by the
                           Company on or before the Closing;

                  6.1.3    the closing of the Clean Earth Sale shall have
                           occurred and the Company shall have received at least
                           $40,000,000 in cash at such closing, net of all
                           deductions required to be made at such closing;

                  6.1.4    the Company shall have delivered to the Holder a
                           certificate, signed by the Chief Executive Officer
                           and Chief Financial Officer of the Company,
                           certifying that the conditions specified in this
                           paragraph 6.1 have been fulfilled as of the Closing,
                           it being understood that the Holder may rely on such
                           certificate as though it were a representation and
                           warranty of the Company made herein;

                  6.1.5    the Company shall have delivered to the Holder one or
                           more opinions of counsel for the Company, dated as of
                           such date, as reasonably requested by, and in form
                           and substance reasonably satisfactory to, the Holder;

                  6.1.6    the Company shall have executed and delivered the
                           Subordinated Debenture and the Subordinated Note;

                  6.1.7    the Company shall have paid the Repurchase Price,
                           together with all amounts payable by the Company
                           pursuant to Section 5.3 hereof, to the Holder by wire
                           transfer of immediately available funds;

                  6.1.8    the Company shall have executed and delivered the
                           2002 Registration Rights Agreement, the Restated
                           Security Agreement, the Termination Agreement, the
                           Waiver and Release Agreement and any other
                           Transaction Document in which it is described as a
                           signatory thereto;

                  6.1.9    each of the Company's Subsidiaries shall have
                           executed and delivered the Subsidiary Guarantee;

                                      -28-
<PAGE>

                  6.1.10   USPL Ltd. shall have executed and delivered the
                           Mortgage and recorded the Mortgage with the
                           appropriate Governmental Authority, and paid all
                           recordation fees and taxes in connection therewith;

                  6.1.11   the Common Stock shall be quoted and traded on the
                           Nasdaq SmallCap Market;

                  6.1.12   there shall have been no material adverse change in
                           the Company's consolidated business or financial
                           condition since December 31, 2001, other than as
                           disclosed in the Pre-Agreement SEC Documents;

                  6.1.13   the Company shall have authorized and reserved the
                           Reserved Amount and provided the Holder with
                           reasonable evidence thereof;

                  6.1.14   there shall be no injunction, restraining order or
                           decree of any nature of any court or Government
                           Authority of competent jurisdiction that is in effect
                           that restrains or prohibits the consummation of the
                           transactions contemplated hereby and by the
                           Transaction Documents;

                  6.1.15   the Closing Date shall occur on a date that is not
                           later than September 30, 2002;

                  6.1.16   the Company shall have delivered to the Holder
                           evidence reasonably satisfactory to the Holder that
                           no adverse environmental conditions affect the Real
                           Property, including, without limitation that the Real
                           Property does not contain any underground storage
                           tanks that are not in compliance with applicable
                           Governmental Requirements, asbestos, polychlorinated
                           biphenyls, petroleum products or any other toxic or
                           hazardous wastes or materials; and

                  6.1.17   the Company shall have furnished the Holder with (i)
                           a current survey of the Mortgaged Property certified
                           to the Holder and the applicable title insurance
                           company, and in form and substance reasonably
                           satisfactory to the Holder, (ii) a final Title Policy
                           for the Mortgaged Property, (iii) written evidence
                           reasonably satisfactory to the Holder that the
                           Company is not in default under any agreements
                           recorded against the Real Property and confirming the
                           extent of the Company's obligations thereunder, (iv)
                           written evidence reasonably satisfactory to the
                           Holder that the Real Property complies with all
                           applicable laws, rules, ordinances and restrictions,
                           and (v) evidence that the Company has obtained and is
                           maintaining such property and liability insurance
                           coverage for all perils and risks as reasonably
                           required by the Holder (and that the Holder is named
                           as loss payee and/or additional insured thereunder).

                                      -29-
<PAGE>

         6.2 CONDITIONS TO COMPANY'S OBLIGATIONS AT THE CLOSING. The Company's
obligations to effect the Closing are conditioned upon the satisfaction (or
waiver by the Company) of each of the following events as of the Closing Date:

                  6.2.1    the representations and warranties of the Holder
                           shall be true and correct in all material respects as
                           of such date as if made on such date (except that to
                           the extent that any such representation or warranty
                           relates to a particular date, such representation or
                           warranty shall be true and correct in all respects as
                           of that particular date);

                  6.2.2    the Holder shall have complied with or performed all
                           of the agreements, obligations and conditions set
                           forth in this Agreement that are required to be
                           complied with or performed by the Holder on or before
                           such Closing;

                  6.2.3    the Holder shall have executed and delivered the 2002
                           Registration Rights Agreement, the Restated Security
                           Agreement, the Termination Agreement, the Waiver and
                           Release Agreement, the Restated Intercreditor
                           Agreement and any other Transaction Document in which
                           it is described as a signatory thereto;

                  6.2.4    there shall be no injunction, restraining order or
                           decree of any nature of any court or Government
                           Authority of competent jurisdiction that is in effect
                           that restrains or prohibits the consummation of the
                           transactions contemplated hereby and by the
                           Transaction Documents;

                  6.2.5    the Holder shall have released its Liens on the
                           Property of the Clean Earth Entities and the Clean
                           Earth Intellectual Property pursuant to documentation
                           reasonably acceptable to the Company (which shall
                           include, among other things, an authorization to file
                           UCC termination statements and partial releases, as
                           appropriate); and

                  6.2.6    the holders of the Senior Credit Facility shall have
                           executed and delivered the Restated Intercreditor
                           Agreement.

7.       INDEMNIFICATION.

         7.1 INDEMNIFICATION OF THE COMPANY. Subject to the limitations
contained in this Section, the Holder shall defend, indemnify and hold harmless
the Company and its respective officers, directors, stockholders, employees and
agents from and against any and all losses, claims, judgments, liabilities,
demands, charges, suits, penalties, costs or expenses, including court costs and
reasonable attorneys' fees as a result of third party claims ("CLAIMS AND

                                      -30-
<PAGE>

LIABILITIES") with respect to or arising from (i) the breach of any warranty or
any inaccuracy of any representation made by the Holder in this Agreement, or
(ii) the breach of any covenant or agreement made by the Holder in this
Agreement.

         7.2 INDEMNIFICATION OF THE HOLDER. Subject to the limitations contained
in this Section, the Company shall defend, indemnify and hold harmless the
Holder and its officers, directors, partners, members, stockholders, employees
and agents from and against any and all Claims and Liabilities with respect to
or arising from (i) the breach of any warranty or any inaccuracy of any
representation made by the Company in this Agreement, or (ii) the breach of any
covenant or agreement made by the Company in this Agreement.

         7.3 CLAIMS PROCEDURE. In respect of any third-party claims for which
indemnification is sought hereunder, promptly after the receipt by any
indemnified party (the "INDEMNITEE") of notice of the commencement of any action
or proceeding against such Indemnitee, such Indemnitee shall, if a claim with
respect thereto is or may be made against any indemnifying party (the
"INDEMNIFYING PARTY") pursuant to this Section, give such Indemnifying Party
written notice of the commencement of such action or proceeding and give such
Indemnifying Party a copy of such claim and/or process and all legal pleadings
in connection therewith. The failure to give such notice shall not relieve any
Indemnifying Party of any of its indemnification obligations contained in this
Section 7, except where, and solely to the extent that, such failure actually
and materially prejudices the rights of such Indemnifying Party. Such
Indemnifying Party shall have, upon request within thirty (30) days after
receipt of such notice, but not in any event after the settlement or compromise
of such claim, the right to defend, at his or its own expense and by his or its
own counsel reasonably acceptable to the Indemnitee, any such matter involving
the asserted liability of the Indemnitee. In any event, the Indemnitee, such
Indemnifying Party and its counsel shall cooperate in the defense against, or
compromise of, any such asserted liability, and in cases where the Indemnifying
Party shall have assumed the defense, the Indemnitee shall have the right to
participate in the defense of such asserted liability at the Indemnitee's own
expense. In the event that such Indemnifying Party shall decline to participate
in or assume the defense of such action, prior to paying or settling any claim
against which such Indemnifying Party is, or may be, obligated under this
Section to indemnify an Indemnitee, the Indemnitee shall first supply such
Indemnifying Party with a copy of a final court judgment or decree holding the
Indemnitee liable on such claim or, failing such judgment or decree, the terms
and conditions of the settlement or compromise of such claim. An Indemnitee's
failure to supply such final court judgment or decree or the terms and
conditions of a settlement or compromise to such Indemnifying Party shall not
relieve such Indemnifying Party of any of its indemnification obligations
contained in this Section 7, except where, and solely to the extent that, such
failure actually and materially prejudices the rights of such Indemnifying
Party. If the Indemnitee is defending the claim as set forth above, the
Indemnitee shall have the right to settle or compromise any claim against it
after consultation with, but without the prior approval of, any Indemnifying
Party; PROVIDED, HOWEVER, that such settlement or compromise shall not, unless
consented to in writing by such Indemnifying Party, which shall not be

                                      -31-
<PAGE>

unreasonably withheld, be conclusive as to the liability of such Indemnifying
Party to the Indemnitee. If the Indemnifying Party is defending the claim as set
forth above, the Indemnifying Party shall have the right to settle the claim
only with the consent of the Indemnitee; PROVIDED, HOWEVER, that if the
Indemnitee shall fail to consent to the settlement of such a claim by the
Indemnifying Party, which settlement (i) the claimant has indicated it will
accept, and (ii) includes an unconditional release of the Indemnitee and its
affiliates by the claimant and imposes no material restrictions on the future
activities of the Indemnitee and its affiliates, the Indemnifying Party shall
have no liability with respect to any payment required to be made to such
claimant in respect of such claim in excess of the proposed amount of
settlement.

         7.4 TREATMENT OF INDEMNITY PAYMENTS. Any payments pursuant to this
Section shall be made by wire transfer of immediately available funds.

8.       MISCELLANEOUS.

         8.1 SURVIVAL; SEVERABILITY. The representations, warranties, covenants
and indemnities made by the parties herein shall survive the Closing
notwithstanding any due diligence investigation made by or on behalf of the
party seeking to rely thereon. In the event that any provision of this Agreement
becomes or is declared by a court of competent jurisdiction to be illegal,
unenforceable or void, this Agreement shall continue in full force and effect
without said provision; provided that in such case the parties shall negotiate
in good faith to replace such provision with a new provision which is not
illegal, unenforceable or void, as long as such new provision does not
materially change the economic benefits of this Agreement to the parties.

         8.2 SUCCESSORS AND ASSIGNS. The terms and conditions of this Agreement
shall inure to the benefit of and be binding upon the respective successors and
permitted assigns of the parties. Nothing in this Agreement, express or implied,
is intended to confer upon any party other than the parties hereto or their
respective successors and permitted assigns any rights, remedies, obligations or
liabilities under or by reason of this Agreement, except as expressly provided
in this Agreement. The Holder may assign its rights and obligations hereunder
and under the other Transaction Documents, in connection with any private sale
or transfer of the Subordinated Debenture, the Subordinated Note or the Warrants
(or part thereof) in accordance with the terms hereof, as long as, as a
condition precedent to the effectiveness of such transfer, (i) the transferee
executes an acknowledgment agreeing to be bound by the applicable provisions of
this Agreement and such other Transaction Documents and (ii) if the transferee
is not an Affiliate of the Holder, the Holder delivers an opinion of counsel to
the Company to the effect that such transfer is exempt from the registration
requirements of the Securities Act, in which case the term "Holder" shall be
deemed to refer to such transferee as though such transferee were an original
signatory hereto. The Company may not assign it rights or obligations under this
Agreement.

         8.3 NO RELIANCE. Each party acknowledges that (i) it has such knowledge
in business and financial matters as to be fully capable of evaluating this
Agreement, the other Transaction Documents and the transactions contemplated
hereby and thereby, (ii) it is not relying on any advice or representation of
the other party in connection with entering into this Agreement, the other
Transaction Documents or such transactions (other than the representations made
in this Agreement or the other Transaction Documents), (iii) it has not received
from the other party any assurance or guarantee as to the merits (whether legal,
regulatory, tax, financial or otherwise) of entering into this Agreement or the

                                      -32-
<PAGE>

other Transaction Documents or the performance of its obligations hereunder and
thereunder, and (iv) it has consulted with its own legal, regulatory, tax,
business, investment, financial and accounting advisors to the extent that it
has deemed necessary, and has entered into this Agreement and the other
Transaction Documents based on its own independent judgment and on the advice of
its advisors as it has deemed necessary, and not on any view (whether written or
oral) expressed by the other party.

         8.4 INJUNCTIVE RELIEF. The Company acknowledges and agrees that a
breach by it of its obligations hereunder will cause irreparable harm to the
Holder and that the remedy or remedies at law for any such breach will be
inadequate and agrees, in the event of any such breach, in addition to all other
available remedies, the Holder shall be entitled to an injunction restraining
any breach and requiring immediate and specific performance of such obligations
without the necessity of showing economic loss.

         8.5 GOVERNING LAW; JURISDICTION. This Agreement shall be governed by
and construed under the laws of the State of New York applicable to contracts
made and to be performed entirely within the State of New York. Each party
hereby irrevocably submits to the non-exclusive jurisdiction of the state and
federal courts sitting in the City of New York, borough of Manhattan, for the
adjudication of any dispute hereunder or in connection herewith or with any
transaction contemplated hereby or discussed herein, and hereby irrevocably
waives, and agrees not to assert in any suit, action or proceeding, any claim
that it is not personally subject to the jurisdiction of any such court, that
such suit, action or proceeding is brought in an inconvenient forum or that the
venue of such suit, action or proceeding is improper. Each party hereby
irrevocably waives personal service of process and consents to process being
served in any such suit, action or proceeding by mailing a copy thereof to such
party at the address in effect for notices to it under this Agreement and agrees
that such service shall constitute good and sufficient service of process and
notice thereof. Nothing contained herein shall be deemed to limit in any way any
right to serve process in any manner permitted by law. In any claim or action
commenced in connection with a dispute hereunder or under any of the other
Transaction Documents, the prevailing party shall be entitled to reimbursement
of all reasonable legal fees and expenses.

         8.6 COUNTERPARTS. This Agreement and the other Transaction Documents
may be executed in any number of counterparts, each of which shall be deemed an
original, and all of which together shall constitute one and the same
instrument.

         8.7 HEADINGS. The headings used in this Agreement are used for
convenience only and are not to be considered in construing or interpreting this
Agreement.

         8.8 NOTICES. Any notice, demand or request required or permitted to be
given by the Company or the Holder pursuant to the terms of this Agreement shall
be in writing and shall be deemed delivered (i) when delivered personally or by
verifiable facsimile transmission, unless such delivery is made on a day that is
not a Business Day, in which case such delivery will be deemed to be made on the
next succeeding Business Day, (ii) on the next Business Day after timely
delivery to an overnight courier and (iii) on the Business Day actually received
if deposited in the U.S. mail (certified or registered mail, return receipt
requested, postage prepaid), addressed as follows:

                                      -33-
<PAGE>

                  to the Company:

                                U.S. Plastic Lumber Corp.
                                2300 W. Glades Road
                                Suite 440 West
                                Boca Raton, Florida 33431
                                Attention: Bruce Rosetto
                                Facsimile: (561) 394-5335

              with copy to:

                                Blank Rome Comisky & McCauley LLP
                                One Logan Square
                                Philadelphia, Pennsylvania  19103
                                Attention: Alan L. Zeiger, Esq.
                                Facsimile: (215) 569-5628

              to the Holder:

                               c/o The Palladin Group, L.P.
                               195 Maplewood Avenue
                               Maplewood, New Jersey 07040
                               Attn:  Robert Chender/Maurice Hryshko

              with copy to:

                               Duval & Stachenfeld
                               300 East 42nd Street
                               New York, NY 10017
                               Attn: Robert L. Mazzeo, Esq.
                               Fax: 212-883-8883

A party may from time to time change its address for notices by giving at least
10 days' written notice of such changed address to the other party hereto.

         8.9 ENTIRE AGREEMENT; AMENDMENTS. This Agreement and the other
Transaction Documents constitute the entire agreement between the parties with
regard to the subject matter hereof and thereof, superseding all prior
agreements or understandings, whether written or oral, between or among the
parties. Except as expressly provided herein, neither this Agreement nor any
term hereof may be amended except pursuant to a written instrument executed by
the Company and the Holder, and no provision hereof may be waived other than by
a written instrument signed by the party against whom enforcement of any such
waiver is sought.

         8.10 NO STRICT CONSTRUCTION. The language used in this Agreement will
be deemed to be the language chosen by the parties to express their mutual
intent, and no rules of strict construction will be applied against any party.

         8.11 TERMINATION OF OBLIGATIONS. The covenants and all terms contained
in this Agreement shall continue in full force and effect for the benefit of the
Holder so long as the Subordinated Note and the Subordinated Debenture are

                                      -34-
<PAGE>

outstanding or the Holder holds any Warrants, Conversion Shares or Warrant
Shares; PROVIDED, HOWEVER, that the following provisions shall terminate and be
of no further force and effect on and after the date on which the Subordinated
Note and the Subordinated Debenture have been paid in full: Sections 5.4, 5.5,
5.6, 5.8, 5.15(e) and 5.17; and PROVIDED, FURTHER, that the provisions of
Section 7 shall continue in full force and effect regardless of whether the
Subordinated Note and the Subordinated Debenture are outstanding or the Holder
holds any Warrants, Conversion Shares or Warrant Shares. Notwithstanding the
foregoing, such provisions shall be deemed to continue in full force and effect
if the Company enters into any bankruptcy or similar proceeding at a time when
any amount paid to the Holder could be ordered to be repaid, whether as a
preference or otherwise, and shall continue until it is finally determined that
no such repayment can be ordered.

                           [Signature Page to Follow]

                                      -35-
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the date first above written.

                                    U.S. PLASTIC LUMBER CORP.

                                    By: /s/ Bruce Rosetto
                                       -----------------------------------------
                                       Name: Bruce Rosetto
                                       Title: Secretary

                                    HALIFAX FUND, L.P.

                                    By:  THE PALLADIN GROUP, L.P.,
                                             Attorney-in-Fact

                                    By: /s/ Maurice Hryshko
                                       -----------------------------------------
                                       Name: Maurice Hryshko
                                       Title: Counsel

                                      -36-

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