Document:

EX-10.3

Exhibit 10.3

STOCK PURCHASE AGREEMENT

          This Stock Purchase Agreement (this “Agreement”) is dated as of July 23, 2007, among
CHANGING WORLD TECHNOLOGIES, INC., a Delaware corporation (the “Company”), STONEHILL
OFFSHORE PARTNERS LIMITED, a Cayman Islands corporation (“Stonehill Offshore”), and
STONEHILL INSTITUTIONAL PARTNERS, L.P., a Delaware limited partnership (“Stonehill
Institutional” and together with Stonehill Offshore, the “Investors”).

          WHEREAS, subject to the terms and conditions set forth in this Agreement, the Company desires
to sell to Stonehill Offshore, and Stonehill Offshore desires to purchase from the Company
175,438.60 shares (the “Stonehill Offshore Shares”) of common stock, par value $.01 (the
“Common Stock”) of the Company and a warrant to purchase 99,041 shares of Common Stock (the
“First Warrant”); and

          WHEREAS, subject to the terms and conditions set forth in this Agreement, the Company desires
to sell to Stonehill Institutional, and Stonehill Institutional desires to purchase from the
Company 175,438.60 shares (the “Stonehill Institutional Shares” and together with the
Stonehill Offshore Shares, the “Shares”) of Common Stock and a warrant (together with the
First Warrant, the “Warrants”) to purchase 99,042 shares of Common Stock.

          NOW, THEREFORE, IN CONSIDERATION of the mutual covenants contained in this Agreement, and for
other good and valuable consideration the receipt and adequacy of which are hereby acknowledged,
the Company and the Investors agree as follows:

1. Purchase and Sale of the Shares. The Company hereby issues, sells and delivers to each
Investor and each Investor hereby purchases, and accepts delivery of, the Shares and the Warrants.

2. Closing.

     2.1 The Closing. The closing (the “Closing”) of the transactions contemplated
by this Agreement shall take place at 10:00 a.m., New York City time, on the date hereof (the
“Closing Date”), at the offices of Weil Gotshal & Manges, LLP, 767 Fifth Avenue, New York,
New York 10153, unless another time, date or place is agreed to in writing by the parties hereto.

     2.2 Company Closing Deliveries. At the Closing, the Company shall deliver the
following to each Investor:

          (a) A copy of the certificate of incorporation of the Company, as in effect immediately prior
to the Closing, certified by its chief executive officer as being in effect as of the Closing Date;

          (b) A copy of the by-laws of the Company, certified by its chief executive officer as being in
effect as of the Closing Date; and

 

 

          (c) A stock certificate issued to each Investor representing the Shares to be delivered to
each such Investor; provided that the Company may deliver such certificate to each Investor within
(5) days following the Closing in the event such certificate is not available for issuance on or
prior to the Closing.

          (d) Duly executed Warrants in the form attached hereto as Exhibit A.

     2.3 Investor Closing Deliveries. At the Closing, each Investor shall deliver the
following to the Company:

          (a) $12,500,000 (the “Purchase Price”) by wire transfer of immediately available funds
to an account designated by the Company; and

          (b) A duly executed counterpart signature page to the Company’s stockholders agreement in the
form attached hereto as Exhibit B (the “Stockholders Agreement”) agreeing to be
bound by the terms thereof (as supplemented in Section 5.7 hereof).

3. Representations and Warranties of the Company. The Company represents and warrants to
each Investor as follows in this Section 3.

     3.1 Organization, Standing and Power. The Company is a corporation duly organized,
validly existing and in good standing under the laws of the State of Delaware, with full corporate
power and corporate authority to (a) own, lease and operate its properties, (b) carry on its
business as currently conducted by it and (c) execute and deliver, and perform under this Agreement
and each other agreement and instrument to be executed and delivered by it pursuant hereto. True
and complete copies of the certificate of incorporation of Company and all amendments thereof (the
“Certificate of Incorporation”), and of the by-laws of the Company, as amended to date (the
“By-Laws”), have been furnished to each Investor.

     3.2 Capitalization. After giving effect to the transactions contemplated herewith and
taking into account, among other things, any and all anti-dilution rights of other stockholders of
the Company relating to or arising from the sale of the Shares, the authorized capital of the
Company will consist of (i) 4,500,000 shares of Common Stock, of which 3,547,063.411 shares are
issued and outstanding, 391,599 shares are reserved for issuance under options and warrants which
are issued and outstanding, 114,085 shares are reserved for issuance under options to be granted
under the Company’s stock option plan, and 195,081 shares are reserved for issuance upon the
conversion of the Series A Preferred Stock, and (ii) 445,081 shares of preferred stock, of which
195,081 shares are designated as Series A Preferred Stock, of which 195,081 shares are issued and
outstanding, and of which 250,000 shares are undesignated. Except as described on Schedule
3.2 and as set forth above, (a) no shares of Common Stock are held in treasury; (b) there are
no other issued or outstanding equity securities of the Company or other securities of the Company
convertible or exchangeable at any time into equity securities of the Company; (c) there are no
outstanding stock appreciation rights, phantom stock rights, profit participation rights, or other
similar rights with respect to any capital stock of the Company; (d) the Company is not subject to
any commitment or obligation that would require the issuance or sale of additional shares of
capital stock of the Company at any time under options, subscriptions, warrants, preemptive rights,
anti-dilution rights or other rights or obligations; (e) as a result of

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the transactions contemplated hereby, the Company is not obligated to issue any shares of
Common Stock in respect of anti-dilution rights in favor of any shareholders of the Company; (f) as
of the Closing Date and immediately thereafter, no individual or entity has, or may be entitled to,
any rights to cause the Company to register any shares of capital stock held by them, other than
pursuant to the Series A SPA, the Exchange Agreement and the Goldman SPA (each as defined below);
and (g) the Company has not been party to any agreement, arrangement or understanding with respect
to the issuance by the Company of shares of capital stock of the Company other than (i) the
Securities Purchase Agreement between the Company and the investors set forth on Schedule A annexed
thereto, dated as of October 24, 2002 (the “Series A SPA”), (ii) the Securities Exchange
Agreement between the Company and Conagra Foods, Inc., dated as of July 21, 2005 (the “Exchange
Agreement”), (iii) the Stock Purchase Agreement between the Company and Gas Research Institute,
dated as of February 28, 2003, (iv) the Agreement between the Company and CWT Venture Group I LLC,
CWT Venture Group II LLC and Eizel 33, LLC, dated as of October 6, 1998, (v) the Stock Purchase
Agreement between the Company and GSFS Investments I Corp. (“Goldman”), dated September 30,
2005 (the “Goldman SPA”), (vi) the Stock Purchase Agreement between the Company and HCM-CWT
Investments I, LLC dated September 20, 2006, (vii) the letter agreement dated April 13, 2005
regarding the issuance of shares of the Company’s Common Stock to certain affiliates of Apex
Capital, LLC and Guggenheim Portfolio Company XIII, LLC, (viii) various subscription agreements of
the Company in substantially the form attached hereto as Exhibit C, and (ix) pursuant to
the Company’s 2002 Stock Option Plan. Each stockholder of the Company has executed a counterpart
signature page to the Stockholders Agreement in the form attached hereto as Exhibit B, or
to a more restrictive form of such stockholders agreement.

     3.3 Issuance of the Shares; Warrants. The issuance, sale and delivery of the Shares
and the Warrants has been duly authorized by all necessary corporate action on the part of the
Company. The Shares, when so issued, sold and delivered against payment therefor in accordance
with the provisions of this Agreement and the shares of Common Stock issuable upon exercise of the
Warrants (the “Warrants Shares”), when so issued, shall be duly and validly authorized and
issued, fully paid and nonassessable, and shall not be subject to any liens, encumbrances, rights
of first refusal, claims or security interests, other than arising pursuant to applicable law
(including securities laws) (collectively, “Liens”) and the Stockholders Agreement.

     3.4 Authority. The execution and delivery by the Company of this Agreement and of all
of the agreements and other documents to be executed and delivered by the Company pursuant hereto
(collectively, the “Company Documents”), the performance by the Company of its obligations
hereunder and thereunder, and the consummation of the transactions contemplated hereby and thereby,
have been duly and validly authorized by all necessary corporate action on the part of the Company
and the Company has all necessary corporate power and corporate authority with respect thereto.
This Agreement is, and when executed and delivered by the Company, each of the Company Documents
will be, in each case assuming such documents are duly executed by the other parties thereto, the
valid and binding obligations of the Company enforceable in accordance with their respective terms,
except as the same may be limited by bankruptcy, insolvency, reorganization, moratorium or other
laws affecting the rights of creditors generally and subject to the rules of law governing (and all
limitations on) specific performance, injunctive relief, and other equitable remedies.

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     3.5 Noncontravention. Neither the execution and delivery by the Company of this
Agreement or the Company Documents, nor the consummation of any of the transactions contemplated
hereby or thereby, nor the performance by the Company of any of its obligations hereunder or
thereunder, will (nor with the giving of notice or the lapse of time or both would) (a) conflict
with or result in a breach of any provision of the Certificate of Incorporation or By-Laws of the
Company, each as amended to date, or (b) give rise to a default, or any right of termination,
cancellation or acceleration, or otherwise be in conflict with or result in a loss of contractual
benefits to the Company or any of its Subsidiaries under any of the terms, conditions or provisions
of any note, bond, mortgage, indenture, license, agreement or other instrument or obligation to
which the Company or any of its Subsidiaries is a party or by which it or any of the Company’s or
any of its Subsidiary’s assets may be bound, or require any consent, approval or notice under the
terms of any such document or instrument (other than such consents, approval or notices that are
obtained or delivered prior to the Closing), or (c) violate any order, writ, injunction, decree,
law, statute, rule or regulation of any court or governmental authority which is applicable to the
Company or any of its Subsidiaries or (d) result in the creation or imposition of any Liens upon
any of the Company’s or its Subsidiaries’ assets, the Common Stock or the Warrant Shares, or (e)
interfere with or otherwise adversely affect the ability of the Company or its Subsidiaries to
carry on their business after the Closing Date on substantially the same basis as it is now
conducted or as proposed to be conducted. The provisions in Sections 5.5 and 5.6 of this Agreement
are at least as favorable as such similar provisions in respect of the Company’s agreements with
its existing stockholders.

     3.6 Governmental Consents. No consent, approval, order or authorization of, or
registration, qualification, designation, declaration or filing with, any federal, state or local
governmental authority on the part of the Company or its Subsidiaries is required in connection
with the valid execution and delivery of this Agreement, or the offer, sale or issuance of the
Shares or Warrants hereunder, except such as has already been obtained.

     3.7 Litigation. Except as set forth on Schedule 3.7, there are no claims,
suits or actions, or administrative, arbitration or other proceedings or governmental
investigations, pending or, to the Company’s knowledge, threatened, adverse to the Company or its
Subsidiaries, the transactions contemplated hereby or the business of the Company or its
Subsidiaries or any of the assets of the Company or its Subsidiaries. There are no judgments,
orders, stipulations, injunctions, decrees or awards in effect which relate to the Company or its
Subsidiaries, this Agreement, the transactions contemplated hereby, the business of the Company or
its Subsidiaries or any of the assets of the Company or its Subsidiaries, the effect of which is
(a) to limit, restrict, regulate, enjoin or prohibit in any respect any business practice of the
Company or its Subsidiaries in any area or (b) otherwise adverse to the business, condition,
affairs, assets, capital stock or prospects of the Company or any of its Subsidiaries, financially
or otherwise.

     3.8 No Violation of Law. Except as set forth on Schedule 3.8, to the
knowledge of the Company, neither the Company nor its Subsidiaries are engaging in any activity or
omitting to take any action as a result of which it is in violation of any material law, rule,
regulation, zoning or other ordinance, statute, order, injunction or decree, or any other
requirement of any court or governmental or administrative body or agency, material to (i) the
Company or its

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Subsidiaries, (ii) the business of the Company or its Subsidiaries or (iii) any assets of the
Company or its Subsidiaries.

     3.9 Subsidiaries. There are no direct or indirect subsidiaries of the Company, other
than (i) Resource Recovery Corporation, (“RRC”) a Delaware corporation, (ii) Thermal
Depolymerization Process LLC, (“TDP”) a Delaware limited liability company, and (iii)
Renewable Environmental Solutions, LLC, (“RES”) a Delaware limited liability company
(together with RRC and TDP, the “Subsidiaries”). 100% of the capital stock of RRC and 100%
of the total membership interests of RES and TDP are owned by the Company, free and clear of all
Liens.

     3.10 Financial Statements. The Company has furnished to each Investor the audited
consolidated balance sheet of the Company as of December 31, 2006 and the related audited
statements of operations, shareholders’ equity and cashflows for the fiscal year then ended and its
unaudited balance sheet and related statements of operations, shareholders’ equity and cashflows
for the period ending March 31, 2007 (collectively, the “Financial Statements”). The
Financial Statements: (a) are true, correct and complete; (b) have been derived from the books and
records of the Company; (c) present fairly the consolidated financial condition and consolidated
operating results of the Company as of the dates and for the periods indicated; and (d) have been
prepared in accordance with generally accepted accounting principles (“GAAP”) applied on a
consistent basis except for year-end audit adjustments and the absence of footnotes required under
GAAP in the case of the unaudited financial statements. The Company maintains and will continue to
maintain a system of accounting established and administered in accordance with GAAP.

     3.11 Absence of Changes. Except as otherwise set forth on Schedule 3.11,
since December 31, 2006, there has not been (i) any material liability or obligation of any nature
whatsoever (contingent or otherwise) incurred by the Company or its Subsidiaries, other than (a)
liabilities incurred in the ordinary course of business and (b) obligations under contracts and
commitments incurred in the ordinary course of business and not required under GAAP to be reflected
in the Financial Statements, which, in the case of both clauses (a) and (b), individually or in the
aggregate, are not material to the financial condition or operating results of the Company or its
Subsidiaries; (ii) any material asset or property of the Company or its Subsidiaries made subject
to a Lien of any kind; (iii) any waiver of any material valuable right of the Company or its
Subsidiaries, or any cancellation of any material debt or claim held by the Company or its
Subsidiaries; (iv) any sale, assignment or transfer of any tangible or intangible material asset of
the Company or its Subsidiaries, except for sales, assignments or transfers in the ordinary course
of business; (v) any loan by the Company or its Subsidiaries to any officer, director, employee,
consultant or shareholder of the Company or its Subsidiaries, or any agreement or commitment
therefor other than routine travel or relocation advances, or loans made in the ordinary course of
business; (vi) any material damage, destruction or loss (whether or not covered by insurance)
affecting the assets, property, business or prospects of the Company or its Subsidiaries; (vii) any
change in the accounting methods, practices or policies followed by the Company or its
Subsidiaries, including any change in depreciation or amortization policies or rates; or (viii) any
off-balance sheet transactions.

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     3.12 Property and Assets. The Company does not own any real property. The Company
owns or has a valid leasehold interest in, all of the material properties and assets, used by it or
located on its premises, including all properties and assets reflected in the Financial Statements,
and except those disposed of since the date thereof in the ordinary course of business; none of
such properties or assets is subject to any mortgage, pledge, lien, security interest, lease,
charge or encumbrance other than those material terms which are described in the Financial
Statements. The Company is in compliance with all material terms of each lease to which it is a
party or is otherwise bound. The Company owns, or has a valid leasehold interest in, all assets
necessary for the conduct of its businesses as presently conducted. Neither the Company nor any of
its Subsidiaries are bound by, or subject to, any contract, agreement, arrangement or understanding
that limits or restricts in any way the ability of any affiliates of the Company to conduct or
engage in any business activities, except which are not material to the Company and its
Subsidiaries, taken as a whole.

     3.13 Intellectual Property. The Company or its Subsidiaries own or have a valid,
perpetual and exclusive license to use, or has a pending application for, all trademarks, service
marks, trade names, service names, copyrights, patents, patent applications, know-how, methods,
processes or other intellectual property, including, without limitation, rights to a technology
known as Thermo-Depolymerization and Chemical Reformer (collectively, the “Intellectual
Property”) that are required to conduct the Company’s business and operations as now conducted
and as proposed to be conducted, all of which are, to Company’s knowledge, valid and in good
standing and uncontested. Except as set forth on Schedule 3.13, the Company and its
Subsidiaries have not received any notice or demand alleging that the Company or its Subsidiaries
are infringing upon or otherwise acting adversely to any trademarks, service marks, trade names,
service names, copyrights, patents, patent applications, know-how, methods, processes or other
intellectual property of any other person or entity, and there is no claim, proceeding or action
pending or, to the knowledge of the Company, threatened, with respect thereto. Except as set forth
on Schedule 3.13, to the Company’s knowledge, no person or entity is infringing upon the
rights or ownership interest of the Company or its Subsidiaries in the Intellectual Property.

     3.14 Taxes. The Company has filed or has obtained presently effective extensions with
respect to all Federal, state, county, local and foreign tax returns which are required to be filed
by it, such returns are true and correct and all taxes shown thereon to be due have been timely
paid.

     3.15 Insurance. The Company maintains such types and amounts of insurance with
respect to its business and properties, on both a per occurrence and an aggregate basis, as are
customarily carried by persons or entities engaged in the same or similar business as the Company.

     3.16 Securities Laws. Based in part upon the representations of each Investor, the
issuance, sale and delivery of the Shares pursuant to this Agreement and the Certificate of
Incorporation of the Company shall be exempt from the registration requirements of Section 5 of the
Securities Act of 1933, as amended (the “Securities Act”).

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     3.17 Related Party Transactions. (a) Set forth on Schedule 3.17(a) is a true
and complete list of all obligations and transactions (i) between the Company and its Subsidiaries,
on the one hand, and any affiliate of the Company and its Subsidiaries, on the other hand, or (ii)
between the Company and its Subsidiaries, on the one hand, and any of the officers, directors,
equity holders or employees, or any of the affiliates or associates (each term as defined in the
Securities Exchange Act of 1934, as amended (the “Exchange Act”)) of the Company and its
Subsidiaries, on the other hand. Except as set forth on Schedule 3.17(a), to the knowledge
of the Company, no officer or director of the Company or person who owns at least 5% of the
outstanding equity of the Company (nor any parent, child or spouse of any of such persons, or any
trust, partnership or corporation in which any of such persons has or has had an interest), has,
(i) any interest or involvement in any entity which provided or sold, or provides or sells,
services or products which any of the Company or its Subsidiaries provides or sells, or proposes to
provide or sell or (ii) any interest or involvement in any entity which purchases from or sells or
provides to, any of the Company or its Subsidiaries, any goods or services; provided, that
ownership of no more than five percent of the outstanding voting stock of a publicly traded
corporation in and of itself shall not be deemed an interest in any entity for purposes of this
Section 3.17.

     (b) Each transaction set forth on Schedule 3.17(a) is on terms that are, in the
Company’s reasonable estimation, at least as favorable to the Company as would be available with
independent third parties dealing at arms’ length.

     3.18 Brokers; Commissions; Investment Banking Services. Except for Imperial Capital,
none of the Company or its Subsidiaries or any of their respective officers, directors, employees
or stockholders has employed any broker or finder in connection with the transactions with the
Investors contemplated by this Agreement.

4. Representations and Warranties as to Investors. Each Investor represents and warrants
to the Company as follows:

     4.1 Investment. Each Investor is acquiring the Shares, the Warrants and the Warrant
Shares for its own account for investment and not with a view to, or for sale in connection with,
any distribution thereof, nor with a present intention of distributing or selling the same, except
for distributions or sales pursuant to a registration statement or in which an exemption from
registration exists for any such distribution or sale.

     4.2 Authority. The execution and delivery by each Investor of this Agreement and of
all of the agreements and other documents to be executed and delivered by each Investor pursuant
hereto (collectively, the “Investor Documents”), the performance by each Investor of its
obligations hereunder and thereunder, and the consummation of the transactions contemplated hereby
and thereby, have been duly and validly authorized by all necessary action on the part of each
Investor, and each Investor has all necessary power and authority with respect thereto. This
Agreement is, and when executed and delivered by the Investors, each other Investor Document will
be, the valid and binding obligation of each Investor enforceable in accordance with the respective
terms thereof, except as the same may be limited by bankruptcy, insolvency, reorganization,
moratorium or other laws affecting the rights of creditors generally and subject to

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the rules of law governing (and all limitations on) specific performance, injunctive relief,
and other equitable remedies.

     4.3 Experience. Each Investor acknowledges that (i) an investment in the Shares, the
Warrants and the Warrant Shares is highly speculative and involves a high degree of risk and that
each Investor can bear the loss of its investment hereunder and (ii) it has such knowledge and
experience in financial and business matters that it is capable of evaluating the merits and risks
of the investment in the Shares.

     4.4 No Market for the Shares. Each Investor understands that there is no market for
any of the Shares, the Warrants or the Warrant Shares nor is there any assurance that one will
develop in the near future, and that the Shares, the Warrants and the Warrant Shares have limited
transferability.

     4.5 Accredited Investor. Each Investor is an “Accredited Investor” within the
definition set forth in Rule 501(a) of the Securities Act.

     4.6 Legend. Each Investor understands that the certificate(s) representing the Shares
and any Warrant Shares will bear a restrictive legend thereon substantially as follows:

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
“SECURITIES ACT”), OR ANY OTHER APPLICABLE SECURITIES LAWS,
AND ARE RESTRICTED SECURITIES AS THAT TERM IS DEFINED UNDER RULE 144
PROMULGATED UNDER THE SECURITIES ACT. THESE SECURITIES MAY NOT BE
SOLD, PLEDGED, TRANSFERRED, DISTRIBUTED OR OTHERWISE DISPOSED OF IN
ANY MANNER UNLESS THEY ARE REGISTERED UNDER THE SECURITIES ACT AND
ANY APPLICABLE SECURITIES LAWS, OR UNLESS THE REQUEST FOR TRANSFER
IS ACCOMPANIED BY A FAVORABLE OPINION OF COUNSEL, REASONABLY
SATISFACTORY TO THE COMPANY, STATING THAT THE TRANSFER WILL NOT
RESULT IN A VIOLATION OF THE SECURITIES ACT OR ANY APPLICABLE STATE
SECURITIES LAWS.”

          The legend set forth above shall be removed and the Company shall issue a certificate without
such legend to the holder of the Shares and any Warrant Shares upon which it is stamped, if, unless
otherwise required by state securities laws, (i) such Shares or Warrant Shares are registered for
resale under the Securities Act, (ii) in connection with a sale, assignment or other transfer, such
holder provides the Company with an opinion of counsel, in reasonably acceptable form to the
Company’s counsel, to the effect that such sale, assignment or transfer of the Shares or Warrant
Shares may be made without registration under the applicable requirements of the Securities Act, or
(iii) such holder represents to the Company that such

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holder’s counsel has advised holder that the Shares can be sold, assigned or transferred
pursuant to Rule 144(k) under the Securities Act.

5. Covenants

     5.1 Information Rights.

          (a) If the Company delivers any regularly prepared reports to Conagra Foods, Inc. (whether
pursuant to the Exchange Agreement or otherwise) or to Goldman (pursuant to the Goldman SPA or
otherwise) regarding the Company’s or its Subsidiaries’ corporate financial condition, the Company
will deliver the same reports and statements to each Investor simultaneously.

          (b) The Company shall deliver to each Investor (to the extent that the Company has not
delivered the reports to such Investor under Section 5.1(a)) any annual or quarterly financial
statements or reports of the Company and its Subsidiaries on a consolidated basis prepared from
time to time by or on behalf of the Company simultaneously with delivery of such financial
statements or reports to Conagra Foods, Inc. or Goldman.

          (c) The rights in this Section 5.1 shall terminate upon the earlier of the initial public
offering of securities of the Company or any time at which the Company is otherwise required to
file public periodic reports with any governmental authority.

     5.2 Restrictions on Transfer. Each Investor agrees that it will not sell, assign or
transfer the Shares in violation of the Securities Act, any other applicable state or foreign
securities laws (“Other Securities Laws”) or the Stockholders Agreement and understands
that it cannot sell, assign or transfer the Shares unless the Shares are registered under the
Securities Act or Other Securities Laws or an exemption from such registration is applicable to
such sale, assignment or transfer.

     5.3 Holdback. In the event of any registration of shares of Common Stock in
connection with an underwritten public offering, each Investor agrees not to effect any sale of any
shares of Common Stock or any common stock equivalents (in each case, other than as part of such
public offering) during the 14 days prior to the effective date of such registration statement
(except as part of such registration statement) or during the period after such effective date as
reasonably required by the managing underwriter of an underwritten offering, but in no event longer
than the earlier of (i) the shortest period applicable to the officers, directors and stockholders
(other than the holders of the Shares) holding 5% or more of the capital stock of the Company or
(ii) 180 days.

     5.4 Expenses. Each party shall pay all of its own costs in connection with the
preparation, negotiation and execution of this Agreement and the consummation of the transactions
contemplated hereby.

     5.5 Anti-Dilution.

          (a) In the event that the Company shall at any time or from time to time after the date
hereof, issue, grant or sell any Additional Stock (as defined in Section 5.6(b), but for the

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purposes of this Section 5.5, such definition shall not include the items set forth in clause
(i) of Section 5.6(b)) for a consideration, exercise or conversion price per share (as the case may
be, the “Anti-Dilution Price”) less than the then current Effective Price (as defined
below), then, in connection with such issuance, the Company shall issue to each Investor, without
any additional consideration paid by such Investor, additional shares of Common Stock (such shares,
the “Anti-Dilution Shares”) such that after the issuance of the Anti-Dilution Shares, the
Effective Price of the shares of Common Stock owned by each Investor shall equal such Anti-Dilution
Price.

          “Effective Price” means the Purchase Price divided by (i) the Shares and (ii) the
number of shares of Common Stock acquired pursuant to this Section 5.5. The initial Effective
Price shall be $71.25 per share.

          (b) The Company (and any successor corporation) shall take all action necessary so that a
number of shares of the authorized but unissued Common Stock (or common stock in the case of any
successor corporation) sufficient to provide for issuance of additional shares of Common Stock to
each Investor in accordance with the provisions of Section 5.5(a) above are at all times reserved
by the Company (or any successor corporation), free from preemptive rights, for such issuance.

          (c) Whenever the Company shall take any of the actions specified in this Section 5.5 which
would result in any adjustment in the Effective Price, the Company shall give notice to each
Investor, which notice shall be made within 10 days after the effective date of such adjustment and
shall state the adjustment and the Effective Price. Notwithstanding the foregoing notice
provisions, failure by the Company to give such notice or a defect in such notice shall not affect
the binding nature of such corporate action of the Company.

          (d) For the purpose of any computation to be made in accordance with Section 5.5(a), the
following provisions shall apply:

          (i) In case of the issuance or sale of shares of Common Stock for a consideration part
or all of which shall be cash, the amount of the cash consideration therefor shall be deemed
to be the amount of cash received by the Company for such shares (or, if shares of Common
Stock are offered by the Company for subscription, the subscription price, or, if such
securities shall be sold to underwriters or dealers for public offering without a
subscription offering, the initial public offering price) before deducting therefrom any
compensation paid or discount allowed in the sale, underwriting or purchase thereof by
underwriters or dealers or others performing similar services, or any expenses incurred in
connection therewith.

          (ii) In the case of the issuance or sale (otherwise than as a dividend or other
distribution on any stock of the Company) of shares of Common Stock for a consideration part
or all of which shall be other than cash, the amount of the consideration therefor other
than cash shall be deemed to be the fair market value of the consideration as determined in
good faith by the Board of Directors of the Company plus the amount of cash, if any.

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          (iii) In the case of the issuance of options, rights, or warrants to purchase or
subscribe for shares of Common Stock, securities convertible into or exchangeable for shares
of Common Stock, or options, rights or warrants to purchase or subscribe for any such
convertible or exchangeable securities, the following provisions shall apply:

          (A) The effective price for the issuance, grant or sale of any options,
rights or warrants shall be deemed to be the minimum purchase price per
share provided for in such options, rights or warrants at the time of
issuance plus the consideration, if any, received by the Company in
connection with the sale or issuance of such options, rights or warrants;
provided, however, that upon the termination of such options, rights or
warrants, if any thereof shall not have been exercised, the Effective Price
then in effect shall forthwith be readjusted and thereafter be the price
which it would have been had such adjustment been made on the basis of the
issuance only of shares of Common Stock actually issued or issuable upon the
exercise of those options, rights or warrants as to which the exercise of
rights shall not have expired or terminated unexercised.

          (B) The effective price for the issuance, grant or sale of any
convertible or exchangeable securities shall be deemed to be the
consideration received by the Company in connection with the sale of such
securities plus the consideration, if any, receivable by the Company upon
the conversion or exchange thereof; provided, however, that upon the
termination of the right to convert or exchange such convertible or
exchangeable securities (whether by reason of redemption or otherwise), the
Effective Price then in effect shall forthwith be readjusted and thereafter
be the price which it would have been had such adjustment been made on the
basis of the issuance only of shares actually issued or issuable upon the
conversion or exchange of those convertible or exchangeable securities as to
which the conversion or exchange rights shall not have expired or terminated
unexercised.

          (C) If any change shall occur in the price per share provided for in
any of the options, rights or warrants referred to in Section
5.5(d)(iii)(A), or in the price per share at which the securities referred
to in Section 5.5(d)(iii)(B) are convertible or exchangeable, such options,
rights or warrants or conversion or exchange rights, as the case may be,
shall be deemed to have expired or terminated on the date when such price
change became effective in respect of shares not theretofore issued pursuant
to the exercise or conversion or exchange thereof, and the Company shall be
deemed to have issued upon such date new options, rights or warrants or
convertible or exchangeable securities at the new price in respect of the
number of shares issuable upon the exercise of such options, rights or
warrants or the conversion or exchange of such convertible or exchangeable
securities.

11

 

          (e) In case the Company shall pay or make a dividend or other distribution to all holders of
its Common Stock in shares of Common Stock, the Effective Price in effect at the opening of
business on the day following the date fixed for the determination of shareholders entitled to
receive such dividend or other distribution shall be reduced by multiplying such Effective Price by
a fraction, the numerator of which shall be the number of shares of Common Stock outstanding at the
close of business on the date fixed for such determination, and the denominator of which shall be
the sum of the numerator and the total number of shares constituting such dividend or other
distribution, such reduction to become effective immediately after the opening of business on the
day next following the date fixed for such determination. For the purposes of this Section 5.5(e),
the number of shares of Common Stock at any time outstanding shall not include shares of Common
Stock held in the treasury of the Company.

          (f) In case the outstanding shares of Common Stock shall be subdivided into a greater number
of shares of Common Stock, the Effective Price in effect at the opening of business on the day
following the day upon which such subdivision becomes effective shall be proportionately reduced,
and, conversely, in case the outstanding shares of Common Stock shall each be combined into a
smaller number of shares of Common Stock, the Effective Price in effect at the opening of business
on the day following the day upon which such combination becomes effective shall be proportionately
increased, such reduction or increase, as the case may be, to become effective immediately after
the opening of business on the day following the day upon which such subdivision or combination
becomes effective.

          (g) Anything contained in this Section 5.5 to the contrary notwithstanding, the rights granted
under this Section 5.5 shall terminate and be of no further force or effect upon earlier of (i) the
closing of a firm commitment underwritten public offering pursuant to an effective registration
statement filed under the Securities Act covering the offer and sale of Common Stock for the
account of the Company in which the per share price is based on a pre-offering valuation of the
Company of not less than $60,000,000 or (ii) upon any merger, or consolidation of the Company with
or into another entity where the stockholders of the Company immediately prior to such event hold
less than a majority of the outstanding voting power of the surviving or consolidated entity, other
than a merger for the sole purpose of effecting a reorganization or change in domicile of the
Company.

     5.6 Right of First Offer.

          (a) Subject to the terms and conditions set forth below, from the date hereof until such time
as the Company effectuates an offering of its Common Stock to the public, each Investor shall have
the right of first offer to purchase, on a pro rata basis, any Additional Stock which the Company
may, from time to time, propose to issue and sell. Each Investor’s pro rata share, for purposes of
this right of first offer, shall be determined by dividing (x) the total number of shares of Common
Stock which are owned by such Investor or obtainable by such Investor upon exercise of any
Warrants, by (y) the total number of shares of outstanding Common Stock on a fully-diluted basis.
The failure by any Investor to exercise its right of first offer with respect to any particular
issuance shall not affect in any way such right with respect to any subsequent issuance.

12

 

          (b) The term “Additional Stock” shall mean Common Stock or options, warrants or other
rights to acquire or securities convertible into or exchangeable for shares of Common Stock,
including shares held in the Company’s treasury, but shall not include (i) securities offered to
the public pursuant to a registration statement approved by the Board of Directors of the Company
and filed with the Commission for a public offering and sale of securities of the Company, (ii)
securities issued for the acquisition of another corporation or other entity by merger, purchase of
all or substantially all of the assets of such other corporation or other entity or other
reorganization resulting in the ownership by the Company of not less than 51% of the voting power
of such other corporation or entity; provided that such transaction is approved by a majority of
the disinterested directors of the Company, (iii) options to purchase up to 150,000 shares (as
equitably adjusted for stock split, stock dividend, conversion or reclassification) of Common Stock
pursuant to the Company’s 2002 Stock Option Plan and any options to purchase shares of Common Stock
issued pursuant to the Company’s future stock option plans or similar plans approved by the Board
of Directors and the stockholders of the Company, but only to the extent that not more than 15% of
the options to purchase Common Stock subject to any one such plan are issued to any one person or
entity (including his or its respective affiliates, as the case may be), (iv) securities issued as
a result of any stock split, stock dividend, conversion or reclassification of Common Stock,
distributable on a pro rata basis to all holders of Common Stock, (v) securities issued as a result
of any stock split, stock dividend or reclassification of Series A Preferred Stock, (vi) securities
issued to any unaffiliated and independent third party lenders pursuant to any bank financing
arrangement approved by the Board of Directors (including any securities issued upon exercise of
such securities), (vii) securities sold to stockholders of the Company pursuant to a general rights
offering to all stockholders, offered on a pro rata basis, (viii) securities issuable upon exercise
of options, warrants or other rights to acquire or securities convertible into or exchangeable for
shares of Common Stock that are currently outstanding, (ix) securities issued to directors of the
Company solely as compensation for service to the Company as a director up to a maximum of 10,000
shares of Common Stock per director (as equitably adjusted for stock split, stock dividend,
conversion or reclassification), (x) securities issued upon exercise or conversion of any
Additional Stock or (xi) securities issued in connection with any anti-dilution rights of any other
stockholder of the Company.

          (c) In the event the Company intends to issue any Additional Stock, it shall give each
Investor written notice (“First Offer Notice”) of such intention, describing the type of
Additional Stock to be issued, the price thereof and the general terms upon which the Company
proposes to effect such issuance. Each Investor shall have twenty (20) days (unless a shorter
period of time is agreed upon by such Investor) from the date of any such First Offer Notice (the
“Initial Exercise Period”) to agree to purchase its pro rata share of such Additional Stock
for the purchase price and upon the terms and conditions specified in the Company’s First Offer
Notice by giving written notice to the Company stating the quantity of Additional Stock to be so
purchased. In the event there is a material change in the terms upon which Additional Stock is
offered by the Company following delivery of the First Offer Notice, the Company will issue a new
First Offer Notice and each Investor will have the longer of (i) the remainder of the Initial
Exercise Period or (ii) ten (10) days from the date of issuance of the new First Offer Notice to
deliver a new notice of irrevocable acceptance to purchase the Additional Stock on the new terms
specified in such new First Offer Notice. Any change to the economics of the offer will be
considered material.

13

 

          (d) If an Investor does not elect to purchase all of the Additional Stock so offered, the
Company shall have the right to sell the unsold Additional Stock to any third party within ninety
(90) days after the date of the First Offer Notice at a purchase price not less than, and upon
terms and conditions not more favorable than, the purchase price and terms and conditions set forth
in the First Offer Notice. If the Company shall not sell all of the Additional Stock within such
ninety (90) day period, such Additional Stock shall again be subject to the terms, conditions and
restrictions set forth in this Section 5.6.

          (e) For convenience in administration, the Company may offer and sell Additional Stock covered
by the right provided in Section 5.6 without first offering such securities to the Investors, so
long as such Investors are given prior notice of such sale and the opportunity to purchase their
pro rata amount (which shall be calculated after giving effect to such issuance to Investor of its
pro rata amount) within twenty (20) days after the close of the sale of the Additional Stock.

     5.7 Disclosure of Investment; Press Releases. The Company, on the one hand, and each
of the Investors, on the other hand, agree that they will not, (a) except as may be necessary or
desirable in connection with a request by a governmental agency, regulatory or supervisory
authority, stock exchange or court or as required by law, and in the case of each Investor only,
other than to affiliates, members or co-investors of such Investor and employees of such Investor
or its affiliates, members or co-investors, publicly disclose the transactions contemplated by the
Agreement or any of the terms hereof without the prior consent of such Investor, on the one hand,
and the Company, on the other hand, or (b) use in advertising or publicity the name of any party
hereto, or any partner or employee of such party hereto or any of its respective affiliates, or any
trade name, trademark, trade device, service mark, symbol or any abbreviation, contraction or
simulation thereof owned by the other party hereto or any of its respective affiliates, in either
case without the prior written consent of such party; provided, however, that each Investor may
describe the transactions contemplated hereby in any promotional literature prepared by or on
behalf of such Investor. From and after the date hereof, neither the Company nor any of its
Subsidiaries will represent, directly or indirectly, that any product or any service provided by
the Company has been approved or endorsed by the Investors or any of their affiliates without the
prior written consent of each such Investor.

     5.8 Stockholders Agreement. Notwithstanding the terms of the Stockholders Agreement,
the Company agrees not to exercise its right of first refusal (and Investor shall not have to
comply with Article III of the Stockholders Agreement) with respect to the Shares to the extent
that an Investor Transfers (as defined in the Stockholders Agreement) the Shares to any of its
Affiliates (as defined in the Stockholders Agreement). For avoidance of doubt, if the Company does
not exercise its option to purchase the Shares for any proposed Transfer by such Investor pursuant
to which Article III of the Stockholders Agreement applies, such Transfer will be deemed a
permissible Transfer under Section 2.3 thereof.

     5.9 Registration Rights. Following the Closing, the Company, the Investors and
certain existing stockholders of the Company will enter into a Registration Rights Agreement (the
“Registration Rights Agreement”) pursuant to which the Investors will be granted
registration rights on the same terms as the other stockholders of the Company party thereto. If
the existing stockholders do not agree to be bound by the terms of the Registration Rights

14

 

Agreement, the Investors will receive a separate agreement pursuant to which the Investors
will be granted registration rights on the same terms as the registration rights with the most
favorable terms that have been granted to any existing stockholder.

     5.10 Participation on Board of Directors. The Investors shall collectively have the
right to designate a member of the Board of Directors if:

          (a) by June 30, 2008, the Company has not started construction of processing plants with at
least 600 tons per day of aggregate processing capacity;

          (b) by June 30, 2009, the Company has not completed construction of processing plants with at
least 600 tons per day of aggregate processing capacity; or

          (c) by June 30, 2009, the Company has not started construction of processing plants with at
least 1,500 tons per day of aggregate processing capacity.

If any of (a), (b) or (c) occur, the Company shall cause the individual designated by the Investors
pursuant to this Section 5.10 to be nominated to serve as a director on the Board of Directors, and
shall take all other necessary actions (including calling a special meeting of the Board of
Directors and/or stockholders) to ensure that the size and composition of the Board of Directors
permits such designee to be elected to the Board of Directors.

6. Miscellaneous.

     6.1 All communications hereunder will be in writing and, except as otherwise provided, will be
delivered at, or mailed by certified mail, return receipt requested, or telegraphed to, the
following addresses:

If to the Company, to:

Changing World Technologies, Inc.

460 Hempstead Avenue

West Hempstead, New York 11552

Attn: Brian S. Appel

with a copy to:

Michael A. King

Weil, Gotshal & Manges, LLP

767 Fifth Avenue

New York, NY 10153

If to the Investors, to:

c/o Stonehill Capital Management LLC

885 Third Avenue

30th Floor

New York, NY 10022

15

 

Attn: Wayne Teetsel

with a copy to:

[                    ]

     6.2 This Agreement shall be deemed to have been made and delivered in New York City and shall
be governed as to validity, interpretation, construction, effect and in all other respects by the
internal laws of the State of New York. Each Investor and the Company (1) agree that any legal
suit, action or proceeding arising out of or relating to this Agreement, shall be instituted
exclusively in New York State Supreme Court, County of New York, or in the United States District
Court for the Southern District of New York, unless such court shall have refused such
jurisdiction, (2) waives any objection which each Investor or the Company may have now or hereafter
to the venue of any such suit, action or proceeding, and (3) irrevocably consents to the
jurisdiction of the New York State Supreme Court, County of New York, and the United States
District Court for the Southern District of New York in any such suit, action or proceeding. Each
Investor and the Company further agrees to accept and acknowledge service of any and all process
which may be served in any such suit, action or proceeding in the New York State Supreme Court,
County of New York, or in the United States District Court for the Southern District of New York
and agrees that service of process upon each Investor or the Company, as the case may be, mailed by
certified mail to such Investors’ addresses or the Company’s address, as the case may be, set forth
in Section 6.1 above shall be deemed in every respect effective service of process upon each
Investor or the Company, as the case may be, in any such suit, action or proceeding.

     6.3 Each party hereto agrees to use its reasonable best efforts to take any action which may
be necessary or appropriate or reasonably requested by the other party hereto in order to
effectuate or implement the provisions of this Agreement.

     6.4 Except for an assignment by each Investor of its rights and obligations hereunder to any
of its Affiliates (as defined in the Stockholders Agreement), this Agreement is not assignable by
either party hereto without the consent of the other party hereto. The rights and obligations of
the parties under this Agreement shall bind and inure to the benefit of the parties and their
respective successors and permitted assigns.

     6.5 The representations and warranties made by the each Investor in Section 4 or in
any document or instrument delivered pursuant hereto shall survive the Closing Date indefinitely.

          The representations and warranties made by the Company in Section 3 shall survive the
Closing Date for a period of two years except for the representations and warranties in Sections
3.1, 3.2, 3.3 and 3.4 which shall survive the Closing Date
indefinitely.

     6.6 The parties hereto acknowledge that money damages would not be an adequate remedy at law
if any party fails to perform in any material respect any of its obligations hereunder, and
accordingly agree that each party, in addition to any other remedy to which it may be entitled at
law or in equity, shall be entitled to seek to compel specific performance of

16

 

the obligations of any other party under this Agreement, without the posting of any bond, in
accordance with the terms and conditions of this Agreement in any court of the United States or any
State thereof having jurisdiction, and if any action should be brought in equity to enforce any of
the provisions of this Agreement, none of the parties hereto shall raise the defense that there is
an adequate remedy at law.

     6.7 This Agreement may be executed in separate counterparts, all of which shall constitute one
agreement.

[Signature page follows]

17

 

          IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first above
written.

	 	 	 	 	 
	 

	 	COMPANY:	 	 
	 
	 	 	 	 
	 

	 	CHANGING WORLD TECHNOLOGIES, INC.	 	 
	 
	 	 	 	 
	 

	 	By:	 	 
	 

	 	 

Name: Steven Carlson
	 	 
	 

	 	Title: Chief Financial Officer	 	 
	 
	 	 	 	 
	 

	 	INVESTORS:	 	 
	 
	 	 	 	 
	 

	 	STONEHILL OFFSHORE PARTNERS LIMITED	 	 
	 
	 	 	 	 
	 

	 	By Stonehill Capital Management LLC, Its Adviser	 	 
	 
	 	 	 	 
	 

	 	By
 

Name: Wayne Teetsel
	 	 
	 

	 	Title: Managing Member	 	 
	 
	 	 	 	 
	 

	 	STONEHILL INSTITUTIONAL PARTNERS, L.P.	 	 
	 
	 	 	 	 
	 

	 	By Stonehill Capital Management LLC, Its Adviser	 	 
	 
	 	 	 	 
	 

	 	By
 

	 	 
	 

	 	Name: Wayne Teetsel	 	 
	 

	 	Title: Managing Member	 	 

CWT/STONEHILL PURCHASE AGREEMENTEX-10.4

Exhibit 10.4

SECURITIES PURCHASE AGREEMENT

          This Securities Purchase Agreement (this “Agreement”) is dated as of October 24, 2002, among
CHANGING WORLD TECHNOLOGIES, INC., a Delaware corporation (the “Company”), having its principal
office at 460 Hempstead Avenue, West Hempstead, New York 11552 and each of the investors set forth
on Schedule A annexed hereto (each an “Investor”; and collectively the “Investors”).

          WHEREAS, the Company is a holding company which owns the exclusive world wide rights to a
technology known as Thermo-Depolymerization and Chemical Reformer (“Technology”) through a wholly
owned subsidiary, Resource Recovery Company;

          WHEREAS, the Investors have previously purchased an aggregate of 170,000 shares of the common
stock, $.10 par value (“Common Stock”), of the Company pursuant (i) to an Agreement dated as of
October 6, 1998 (the “1998 Purchase Agreement”), among the Company and the Investors, and (ii)
certain internal equity offerings by the Company; and

          WHEREAS, subject to the terms and conditions set forth in this Agreement and pursuant to
Section 4(2) of the Securities Act of 1933, as amended (the “Securities Act”), the Company desires
to issue and sell to the Investors, and the Investors desire to purchase from the Company, an
aggregate of 195,081 shares (the “Preferred Shares”) of Series A Convertible Preferred Stock, par
value $.01 per share (the “Series A Preferred Stock”), of the Company as more fully described in
this Agreement.

          NOW, THEREFORE, IN CONSIDERATION of the mutual covenants contained in this Agreement, and for
other good and valuable consideration the receipt and adequacy of which are hereby acknowledged,
the Company and the Investors agree as follows:

1. Purchase of Shares.

     1.1 Purchase and Sale. Subject to the terms and conditions set forth in this
Agreement and in reliance upon the representations, warranties, covenants and conditions herein
contained, on the Closing Date (as defined in Section 2 hereof), the Company shall sell and issue
to the Investors, and the Investors shall purchase from the Company, the Preferred Shares, in
accordance with Schedule A annexed hereto, free and clear of any and all liens, adverse claims,
security interests, pledges, mortgages, charges and encumbrances of any nature whatsoever
(collectively, “Liens”).

     1.2 Purchase Price. The purchase price for the purchase of the Preferred Shares by
the Investors from the Company shall be $25.63 per share, for an aggregate purchase price of
$5,000,000 (the “Purchase Price”), payable as follows:

          (i) $3,000,000 shall be payable at the First Closing (as defined in Section 2) by certified or
bank cashier’s check payable to the order of the Company or by wire transfer of immediately
available funds to an account designated by the Company; and

          (ii) $1,000,000 shall be payable (A) at any time beginning after January 1, 2003 but prior to
December 31, 2003 upon notice given by the Company to the Investors, or (B)

 

 

at any time after the First Closing (as defined in Section 2) but prior to December 31, 2003
upon notice given by the Investors to the Company (the “Second Closing”). In either case such
payment shall be made by certified or bank cashier’s check payable to the order of the Company or
by wire transfer of immediately available funds to an account designated by the Company. The Second
Closing shall not be subject to the satisfaction of any conditions, other than the giving of notice
as contemplated by this Section 1.2(ii).

          (iii) $1,000,000 shall be payable (A) at any time beginning after February 1, 2003 but prior
to December 31, 2003 upon notice given by the Company to the Investors, or (B) at any time after
the First Closing (as defined in Section 2) but prior to December 31, 2003 upon notice given by the
Investors to the Company (the “Third Closing”). In either case such payment shall be made by
certified or bank cashier’s check payable to the order of the Company or by wire transfer of
immediately available funds to an account designated by the Company. The Third Closing shall not be
subject to the satisfaction of any conditions, other than the giving of notice as contemplated by
this Section 1.2(iii).

2. The Closing. The first closing (the “First Closing”) of the transactions contemplated
by this Agreement shall take place upon the satisfaction or waiver of all conditions to the
obligations of the parties hereto to consummate the transactions contemplated by this Agreement
(the “Closing Date”), at the offices of Blank Rome LLP, 405 Lexington Avenue, New York, New York
10174, unless another time, date or place is agreed to in writing by the parties hereto. The
Second Closing shall take place ten days after the Company or the Investors give notice pursuant to
Section 1.2(ii)(A) or 1.2(ii)(B). The Third Closing shall take place ten days after the Company or
the Investors give notice pursuant to Section 1.2(iii)(A) or 1.2(iii)(B).

3. Representations and Warranties of the Company. The Company represents and warrants to
the Investors as follows:

     3.1 Organization, Standing and Power. The Company is a corporation duly organized,
validly existing and in good standing under the laws of the State of Delaware, with full corporate
power and corporate authority to (a) own, lease and operate its properties, (b) carry on its
business as currently conducted by it and (c) execute and deliver, and perform under this Agreement
and each other agreement and instrument to be executed and delivered by it pursuant hereto. True
and complete copies of the Certificate of Incorporation of Company and all amendments thereof, and
of the By-Laws of the Company, as amended to date, have heretofore been furnished to Investors.

     3.2 Capitalization. The authorized capital stock of the Company consists of (i)
2,000,000 shares of common stock, $.01 par value (“Common Stock”), of which 974,151.4 shares are
issued and outstanding, 22,350 shares are reserved for issuance under options and warrants which
are issued and outstanding, 150,000 shares are reserved for issuance under options to be granted
under the Company’s stock option plan, and 195,081 shares are reserved for issuance upon the
conversion of the Series A Preferred Stock, and (ii) 445,081 shares of preferred stock, of which
195,081 shares are designated as Series A Preferred Stock, of which no shares are issued and
outstanding and of which 250,000 shares are undesignated. Except as described on Schedule
3.2 and as set forth above, (a) no shares of Common Stock are held in treasury; (b) there are
no other issued or outstanding equity securities of the Company or other

2

 

securities of the Company convertible or exchangeable at any time into equity securities of
the Company; (c) there are no outstanding stock appreciation rights, phantom stock rights, profit
participation rights, or other similar rights with respect to any capital stock of the Company; and
(d) the Company is not subject to any commitment or obligation that would require the issuance or
sale of additional shares of capital stock of the Company at any time under options, subscriptions,
warrants, preemptive rights, antidilution rights or other rights or obligations.

     3.3 Issuance of the Shares. The issuance, sale and delivery of the Preferred Shares
have been, and upon conversion of the Preferred Shares into shares of Common Stock (the “Conversion
Shares”), the issuance of the Conversion Shares will be, duly authorized by all necessary corporate
action on the part of the Company. Each of the Preferred Shares and the Conversion Shares, when so
issued, sold and delivered against payment therefor in accordance with the provisions of this
Agreement, shall be duly and validly authorized and issued, fully paid and nonassessable.

     3.4 Authority. The execution and delivery by the Company of this Agreement and of all
of the agreements and other documents to be executed and delivered by the Company pursuant hereto
(collectively, the “Company Documents”), the performance by the Company of its obligations
hereunder and thereunder, and the consummation of the transactions contemplated hereby and thereby,
have been duly and validly authorized by all necessary corporate action on the part of the Company
and the Company has all necessary corporate power and corporate authority with respect thereto.
This Agreement is, and when executed and delivered by the Company, each of the Company Documents
will be, in each case assuming such documents are duly executed by the other parties thereto, the
valid and binding obligations of the Company enforceable in accordance with their respective terms,
except as the same may be limited by bankruptcy, insolvency, reorganization, moratorium or other
laws affecting the rights of creditors generally and subject to the rules of law governing (and all
limitations on) specific performance, injunctive relief, and other equitable remedies.

     3.5 Noncontravention. Neither the execution and delivery by the Company of this
Agreement or the Company Documents, nor the consummation of any of the transactions contemplated
hereby or thereby, nor the performance by the Company of any of its obligations hereunder or
thereunder, will (nor with the giving of notice or the lapse of time or both would) (a) conflict
with or result in a breach of any provision of the Certificate of Incorporation or By-Laws of the
Company, each as amended to date, or (b) give rise to a default, or any right of termination,
cancellation or acceleration, or otherwise be in conflict with or result in a loss of contractual
benefits to the Company under any of the terms, conditions or provisions of any note, bond,
mortgage, indenture, license, agreement or other instrument or obligation to which the Company is a
party or by which it or any of the Company’s assets may be bound, or require any consent, approval
or notice under the terms of any such document or instrument (other than such consents, approval or
notices that are obtained or delivered prior to the Closing), or (c) violate any order, writ,
injunction, decree, law, statute, rule or regulation of any court or governmental authority which
is applicable to the Company or (d) result in the creation or imposition of any Liens upon any of
the Company’s assets, the Common Stock or the Preferred Shares, or (e) interfere with or otherwise
adversely affect the ability of the Company to carry on its business after the Closing Date on
substantially the same basis as it is now conducted or as proposed to be conducted.

3

 

     3.6 Governmental Consents. No consent, approval, order or authorization of, or
registration, qualification, designation, declaration or filing with, any federal, state or local
governmental authority on the part of the Company is required in connection with the valid
execution and delivery of this Agreement, or the offer, sale or issuance of the Preferred Shares
hereunder, except such as has already been obtained or as is not required to be obtained prior to
the First Closing.

     3.7 Litigation. Except as set forth on Schedule 3.7, there are no claims,
suits or actions, or administrative, arbitration or other proceedings or governmental
investigations, pending or, to the Company’s knowledge, threatened, adverse to the Company, the
transactions contemplated hereby or the business of the Company or any of the Company’s assets.
There are no judgments, orders, stipulations, injunctions, decrees or awards in effect which relate
to the Company, this Agreement, the transactions contemplated hereby, the business of the Company
or any of its assets, the effect of which is (a) to limit, restrict, regulate, enjoin or prohibit
in any respect any business practice of the Company in any area or (b) otherwise adverse to the
business, condition, affairs, assets, capital stock or prospects of the Company or any of its
subsidiaries, financially or otherwise, nor, to the Company’s knowledge, is the Company aware that
there is any basis for the foregoing.

     3.8 No Violation of Law. To its knowledge, the Company is not engaging in any
activity or omitting to take any action as a result of which it is in violation of any material
law, rule, regulation, zoning or other ordinance, statute, order, injunction or decree, or any
other requirement of any court or governmental or administrative body or agency, applicable to the
Company, the business of the Company or any assets of the Company, including, but not limited to,
those relating to: occupational safety and health matters; issues of environmental and ecological
protection (e.g., the use, storage, handling, transport or disposal of pollutants,
contaminants or hazardous or toxic materials or wastes, and the exposure of persons thereto);
business practices and operations; labor practices; employee benefits; and zoning and other land
use laws and regulations.

     3.9 Subsidiaries. There are no direct or indirect subsidiaries of the Company, other
than (i) Resource Recovery Corporation, a Delaware corporation, (ii) Scientific Resource
Management, Inc., a Delaware corporation, (iii) Thermal Depolymerization Process LLC, a Delaware
limited liability company, and (iv) Renewable Environmental Solutions, LLC, a Delaware limited
liability company. In the case of clauses (i) and (ii) of this Section 3.9, all of the capital
stock of such subsidiaries is owned by the Company, free and clear of all Liens. In the case of
clauses (iii) and (iv) of this Section 3.9, the Company has a membership interest equal to 50% of
the total membership interests of each such subsidiary, free and clear of all Liens. It is
contemplated, and the Investors acknowledge, that the Company or its subsidiaries may create
additional subsidiaries in the future.

     3.10 Financial Statements. The Company has furnished to the Investor the audited
balance sheet of the Company as of December 31, 2001 and the related unaudited statements of income
(loss), shareholders’ equity and changes in financial position for the fiscal year then ended and
its unaudited balance sheet and related statements of income (loss), shareholders’ equity and
changes in financial position for the period ending June 30, 2002 (collectively, the “Financial
Statements”). The Financial Statements: (1) are true, correct and complete; (2) have

4

 

been prepared in accordance with the books and records of the Company; (3) present fairly the
consolidated financial condition and consolidated operating results of the Company as of the dates
and for the periods indicated; and (4) have been prepared in accordance with generally accepted
accounting principles (“GAAP”) applied on a consistent basis except for year-end audit adjustments
and the absence of footnotes required under GAAP in the case of the unaudited financial statements.
The Company maintains and will continue to maintain a system of accounting established and
administered in accordance with GAAP.

     3.11 Absence of Changes. Except as otherwise set forth on Schedule 3.11, since June
30, 2002, there has not been (1) any material adverse change in the financial condition, results of
operations, assets, liabilities, business or prospects of the Company; (2) any material liability
or obligation of any nature whatsoever (contingent or otherwise) incurred by the Company, other
than (a) liabilities incurred in the ordinary course of business and (b) obligations under
contracts and commitments incurred in the ordinary course of business and not required under GAAP
to be reflected in the Financial Statements, which, individually or in the aggregate, are not
material to the financial condition or operating results of the Company; (3) any material asset or
property of the Company made subject to a lien of any kind; (4) any waiver of any material valuable
right of the Company, or any cancellation of any material debt or claim held by the Company; (5)
any sale, assignment or transfer of any tangible or intangible material assets of the Company,
except for sales, assignments or transfers in the ordinary course of business; (6) any loan by the
Company to any officer, director, employee, consultant or shareholder of the Company, or any
agreement or commitment therefor other than routine travel or relocation advances, or loans made in
the ordinary course of business; (7) any material damage, destruction or loss (whether or not
covered by insurance) affecting the assets, property, business or prospects of the Company; (8) any
change in the accounting methods, practices or policies followed by the Company, including any
change in depreciation or amortization policies or rates or (9) any off-balance sheet transactions.

     3.12 Property and Assets. The Company does not own any real property. The Company
owns or has a valid leasehold interest in, all of the material properties and assets, used by it or
located on its premises, including all properties and assets reflected in the Financial Statements,
and except those disposed of since the date thereof in the ordinary course of business; none of
such properties or assets is subject to any mortgage, pledge, lien, security interest, lease,
charge or encumbrance other than those material terms which are described in the Financial
Statements. The Company is in compliance with all material terms of each lease to which it is a
party or is otherwise bound. The Company owns, or has a valid leasehold interest in, all assets
necessary for the conduct of its businesses as presently conducted.

     3.13 Intellectual Property. The Company or its subsidiaries own or have a valid
license to use all trademarks, service marks, trade names, service names, copyrights, patents,
patent applications, know-how, methods, processes or other intellectual property, including,
without limitation, the Technology (collectively, the “Intellectual Property”) that are required to
conduct the Company’s business and operations as now conducted and as proposed to be conducted, all
of which are, to Company’s knowledge, valid and in good standing and uncontested. Except as set
forth on Schedule 3.13, the Company has not received any notice or demand alleging that the
Company is infringing upon or otherwise acting adversely to any trademarks, service marks, trade
names, service names, copyrights, patents, patent applications,

5

 

know-how, methods, processes or other intellectual property of any other person or entity, and
there is no claim, proceeding or action pending or, to the knowledge of the Company, threatened,
with respect thereto. Except as set forth on Schedule 3.13, to the Company’s knowledge, no
person or entity is infringing upon the Company’s rights or ownership interest in the Intellectual
Property.

     3.14 Taxes. The Company has filed or has obtained presently effective extensions with
respect to all Federal, state, county, local and foreign tax returns which are required to be filed
by it, such returns are true and correct and all taxes shown thereon to be due have been timely
paid.

     3.15 Insurance. The Company maintains such types and amounts of insurance with
respect to its business and properties, on both a per occurrence and an aggregate basis, as are
customarily carried by persons or entities engaged in the same or similar business as the Company.

     3.16 Securities Laws. Based in part upon the representations of the Investors, the
issuance, sale and delivery of the Preferred Shares pursuant to this Agreement and the Certificate
of Incorporation of the Company shall be exempt from the registration requirements of Section 5 of
the Securities Act.

     3.17 Information as to the Company. None of the representations or warranties made by
the Company in this Agreement is, or contained in any of the Company Documents to be executed and
delivered pursuant hereto will be, false or misleading with respect to any material fact, or omits
to state any material fact necessary in order to make the statements therein contained not
misleading.

4. Representations and Warranties as to Investors. Each Investor represents and warrants
to severally and not jointly the Company, as to itself, as follows:

     4.1 Investment. Such Investor is acquiring the Preferred Shares and the Conversion
Shares, as appropriate, for his or its own account for investment and not with a view to, or for
sale in connection with, any distribution thereof, nor with a present intention of distributing or
selling the same, except for distributions to his or its affiliates and/or partners in which an
exemption from registration exists for any such distribution.

     4.2 Authority. The execution and delivery by such Investor of this Agreement and of
all of the agreements and other documents to be executed and delivered by Investor pursuant hereto
(collectively, the “Investor Documents”), the performance by such Investor of his or its
obligations hereunder and thereunder, and the consummation of the transactions contemplated hereby
and thereby, have been duly and validly authorized by all necessary action on the part of such
Investor, and such Investor has all necessary power and authority with respect thereto. This
Agreement is, and when executed and delivered by such Investor, each other Investor Document will
be, the valid and binding obligation of such Investor enforceable in accordance with the respective
terms thereof, except as the same may be limited by bankruptcy, insolvency, reorganization,
moratorium or other laws affecting the rights of creditors generally and subject to

6

 

the rules of law governing (and all limitations on) specific performance, injunctive relief,
and other equitable remedies.

     4.3 Experience. Such Investor acknowledges that (i) an investment in the Preferred
Shares is highly speculative and involves a high degree of risk and that such Investor can bear the
loss of his or its investment hereunder and (ii) he or it has such knowledge and experience in
financial and business matters that he or its is capable of evaluating the merits and risks of the
investment in the Preferred Shares.

     4.4 Access to Information. Such Investor has carefully reviewed the representations
concerning the Company contained in this Agreement, has made an inquiry concerning the Company, its
business and its personnel, and has had a reasonable opportunity to ask questions of and receive
answers from the Company with respect to the Company, its business, the Preferred Shares and the
Conversion Shares, and all such questions, if any, have been answered to the satisfaction of such
Investor.

     4.5 No Market for the Preferred Shares. Such Investor understands that there is no
market for any of the Preferred Shares and the Conversion Shares, nor is there any assurance that
one will develop in the near future, and that the Preferred Shares have limited transferability.

     4.6 Accredited Investor. Such Investor is an Accredited Investor within the
definition set forth in Rule 501(a) of the Securities Act.

     4.7 Legend. Each of the Investors understands that the certificate(s) representing
the Preferred Shares and any Conversion Shares will bear a restrictive legend thereon substantially
as follows:

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY
OTHER APPLICABLE SECURITIES LAWS, AND ARE RESTRICTED SECURITIES AS THAT TERM
IS DEFINED UNDER RULE 144 PROMULGATED UNDER THE SECURITIES ACT. THESE
SECURITIES MAY NOT BE SOLD, PLEDGED, TRANSFERRED, DISTRIBUTED OR OTHERWISE
DISPOSED OF IN ANY MANNER UNLESS THEY ARE REGISTERED UNDER THE SECURITIES
ACT AND ANY APPLICABLE SECURITIES LAWS, OR UNLESS THE REQUEST FOR TRANSFER
IS ACCOMPANIED BY A FAVORABLE OPINION OF COUNSEL, REASONABLY SATISFACTORY TO
THE COMPANY, STATING THAT THE TRANSFER WILL NOT RESULT IN A VIOLATION OF THE
SECURITIES ACT OR ANY APPLICABLE STATE SECURITIES LAWS.”

5. Conditions to the Obligations of the Investors. The obligation of each Investor to
purchase the Preferred Shares at the First Closing is subject to fulfillment, or the waiver by such
Investor, of the following conditions on or before the Closing Date.

7

 

     5.1 Accuracy of Representations and Warranties. Each representation and warranty
contained in Section 3 shall be true and complete on and as of the Closing Date with the same
effect as though such representation and warranty had been made on and as of that date.

     5.2 Performance. The Company shall have performed and complied with all agreements
and conditions contained in this Agreement required to be performed or complied with by the Company
prior to or at the Closing.

     5.3 Filing of Amended and Restated Certificate of Incorporation. An amended and
restated Certificate of Incorporation of the Company, in the form attached hereto as Exhibit
A, shall have been filed with the Secretary of State of the State of Delaware and shall
continue to be in full force and effect as of the Closing Date.

     5.4 Reservation of Conversion Shares. The Conversion Shares issuable upon conversion
of the Preferred Shares shall have been duly authorized and reserved for issuance upon such
conversion.

     5.5 Compliance Certificate. The Company shall have delivered to each of the
Investors, executed by the President of the Company, dated the Closing Date, a Compliance
Certificate with respect to the fulfillment of the conditions specified in Sections 5.1, 5.2, 5.4
and 5.7 of this Agreement.

     5.6 Board of Directors. Upon the Closing, the authorized size of the Board of
Directors of the Company (the “Board”) shall be nine (9) members. In accordance with the
provisions of the Company’s Certificate of Incorporation, as amended, the Investors shall be
entitled to select two (2) of such nine (9) directors.

     5.7 Amendment to By-Laws. An amendment to the By-Laws of the Company, in the form
attached hereto as Exhibit B, shall have been duly approved and adopted in accordance with
the provisions of the Certificate of Incorporation and By-Laws of the Company.

     5.8 Amendment to the Tire and Rubber Joint Venture. An amendment to the Tire and
Rubber Joint Venture, in the form of Exhibit C, shall have been executed and delivered by
the Company and the Investors.

     5.9 Blue Sky Approvals. The Company shall have taken all actions necessary for the
exemptions from the state securities laws of all jurisdictions in which the Preferred Shares are
being sold on or before the Closing Date, or at such time thereafter as may be required by the
applicable statute.

     5.10 Certificates and Documents. The Company shall have delivered to the Investors’
counsel:

          (a) Certificates, dated no more than thirty (30) days before the Closing, as to the corporate
good standing of the Company issued by the Secretary of State of the State of Delaware and the
Secretary of State of any jurisdictions in which the Company is qualified to do business as a
foreign corporation;

8

 

          (b) Certificate of Incorporation of the Company, as in effect prior to the Closing, certified
by its Secretary or Assistant Secretary as being in effect as of the Closing Date;

          (c) By-laws of the Company, certified by its Secretary or Assistant Secretary as being in
effect as of the Closing Date;

          (d) Resolutions of the Board and stockholders of the Company, authorizing and approving all
matters in connection with this Agreement and the transactions contemplated hereby, certified by
the Secretary or Assistant Secretary of the Company as of the Closing Date; and

          (e) Stock certificates issued to each Investor representing the Preferred Shares purchased by
such Investor as set forth on Schedule A; provided that the Company shall deliver such
certificates to such Investors within (5) days following the Closing in the event such certificates
are not available for issuance on or prior to the Closing.

6. Conditions to the Obligations of the Company. The obligations of the Company under this
Agreement are subject to fulfillment, on or before the Closing Date, of each of the following
conditions:

     6.1 Accuracy of Representations and Warranties. Each representation and warranty
contained in Section 4 shall be true and complete on and as of the Closing Date with the same
effect as though such representation and warranty had been made on and as of that date.

     6.2 Performance. The Investors shall have performed and complied with all agreements
and conditions contained in this Agreement required to be performed or complied with by the
Investors prior to or at the Closing.

     6.3 Compliance Certificate. Each Investor shall have delivered to the Company,
executed by the President or equivalent of each Investor, dated the Closing Date, a Compliance
Certificate with respect to the fulfillment of the conditions specified in Sections 6.1 and 6.2 of
this Agreement.

     6.4 Termination of Proxy. That certain Proxy dated October 6, 1998 made by James W.
Patterson, Brian S. Appel, Charles W. Trautner and Paul T. Baskis in favor of the Investors shall
have been terminated.

7. Covenants

     7.1 Reservation of Conversion Shares. The Company shall, so long as the Preferred
Shares are outstanding, reserve and keep available out of its authorized Common Stock such number
of shares of Common Stock as shall then be issuable upon conversion of the then outstanding
Preferred Shares.

9

 

     7.2 Registration Rights.

          7.2.1 Piggyback Registration.

     (i) If, at any time that an Investor beneficially owns any of the Registrable
Securities (as defined below) the Company proposes to prepare and file with the Securities
and Exchange Commission (the “Commission”) one or more registration statements (except in
connection with an initial public offering of its securities, subject to Section 7.2.1(iii)
below) or post-effective amendments thereto covering equity or debt securities of the
Company, or any such securities of the Company held by its securityholders (in any such
case, other than in connection with a merger, acquisition or pursuant to Form S-8 or
successor form) (collectively, the “Registration Statement”), it will give written notice of
its intention to do so by registered mail (“Notice”), at least twenty (20) days prior to the
initial filing of each such Registration Statement, to all holders of the Registrable
Securities (as defined below). Upon the written request of such a holder (a “Requesting
Holder”), made within ten (10) days after receipt of the Notice, that the Company include
any of the Requesting Holder’s Registrable Securities in the proposed Registration
Statement, the Company shall, as to each such Requesting Holder, effect the registration
under the Act of the Registrable Securities which it has been so requested to register
(“Piggyback Registration”); provided, however, that if, in the written
opinion of the Company’s managing underwriter, if any, for such offering, the inclusion of
all or a portion of the Registrable Securities requested to be registered, when added to the
securities being registered by the Company or the selling stockholder(s), will exceed the
maximum amount of the Company’s securities which can be marketed (i) at a price reasonably
related to their then current market value, or (ii) without otherwise materially adversely
affecting the entire offering, then the Company may exclude from such offering all or a
portion of the Registrable Securities which it has been requested to register. The term
“Registrable Securities” means (i) the Conversion Shares, (ii) any Common Stock of the
Company issued as a dividend or other distribution with respect to, in exchange for or in
replacement of the Preferred Shares or the Conversion Shares and (iii) all other shares of
Common Stock held by the Investors and/or their assigns as of the date of this Agreement
that were initially purchased by CWT Venture Group I LLC, CWT Venture Group II LLC and Eizel
33, LLC pursuant to the 1998 Purchase Agreement; provided that any Conversion Shares or
other shares of Common Stock shall not be considered Registrable Securities at such time as
all of the shares of Common Stock held by a holder may be freely traded (without limitation
or restriction as to quantity or timing and without registration under the Securities Act)
under Rule 144(k) promulgated under the Securities Act or otherwise.

     (ii) If securities are proposed to be offered for sale pursuant to a Registration
Statement by security holders of the Company (other than the Investors) and the total number
of securities to be offered by such other selling security holders and the Requesting
Holders is required to be reduced pursuant to a request from the managing underwriter (which
request shall be made only for the reasons and in the manner set forth above) the aggregate
number of Registrable Securities to be offered by Requesting Holders pursuant to such
Registration Statement shall equal the number which bears the same ratio to the maximum
number of securities that the underwriter believes may be

10

 

included for all selling security holders (including the Requesting Holders, but not
including any other selling security holders including securities in such offering pursuant
to a demand registration right such other selling security holders may have) as the number
of Registrable Securities beneficially owned by the Requesting Holders bears to the total
original number of securities proposed to be offered by the Requesting Holders and the other
selling security holders (other than such selling security holders including securities in
such offering pursuant to a demand registration right such other selling security holders
may have).

     (iii) Anything contained in this Section 7.2.1 to the contrary notwithstanding, the
Company shall not be obligated to include any of the Requesting Holders’ Registrable
Securities in a Registration Statement in connection with an initial public offering of its
securities only in the event that the Company does not include any securities of the Company
held by any other security holder of the Company in such Registration Statement.

          7.2.2 Demand Registration.

     (i) At any time after six (6) months after the Company’s securities commence trading
publicly (either as a result of an initial public offering of the Company’s securities or
otherwise) and prior to the seventh anniversary of the Company’s initial public offering,
any “Majority Holder” (as defined below) of the Registrable Securities shall have the right
(which right is in addition to the piggyback registration rights provided for under Section
7.1.2 hereof), exercisable by written notice to the Company (the “Demand Registration
Request”), to have the Company prepare and file with the Commission on two occasions, in the
aggregate for all Majority Holders, a Registration Statement and such other documents,
including a prospectus, as may be necessary (in the opinion of both counsel for the Company
and counsel for such holder) in order to comply with the provisions of the Act, so as to
permit a public offering and sale of the Registrable Securities by the holders thereof;
provided that the aggregate proceeds of such public offering are reasonably expected to
exceed $3,000,000. The Company shall cause the Registration Statement to become effective
under the Act, so as to permit a public offering and sale of the Registrable Securities by
the holders thereof. Once effective, the Company shall maintain the effectiveness of the
Registration Statement until the earlier of (i) the date that all of the Registrable
Securities included in such offering have been sold, or (ii) one hundred and eighty days
after the effectiveness of such registration statement. The term “Majority Holder” as used
in this Section 7.2.2 shall mean any holder or any combination of holders of Registrable
Securities who hold a majority of the Registrable Securities not covered by a then-current
Registration Statement.

     (ii) The Company covenants and agrees to give written notice of any Demand Registration
Request to all holders of the Registrable Securities within ten (10) days from the date of
the Company’s receipt of any such Demand Registration Request. After receiving notice from
the Company as provided in this Section 7.2.2, holders of Registrable Securities may request
the Company to include their Registrable Securities in the Registration Statement to be
filed pursuant to this Section 7.2.2 by notifying the

11

 

Company of their decision to have such securities included within ten (10) days of
their receipt of the Company’s notice.

     (iii) Notwithstanding the foregoing, if at any time of any request to register
Registrable Shares pursuant to this Section 7.2.2, the Company (x) is engaged or has
substantially developed plans to engage within 90 days of the time of the request, in a
registered public offering as to which the Investors may include Registrable Shares pursuant
to Section 7.2.1, (y) is engaged in any other activity which, in the good faith
determination of the Company’s Board of Directors, would be adversely affected by the
requested registration to the material detriment of the Company or (2) the Company’s Board
of Directors determines, in its good faith, that it is in the best interests of the Company
not to disclose the existence of or facts surrounding a significant corporate development or
transaction then pending or in progress, then the Company may at its option direct that such
request be delayed for a period not in excess of the earlier of (i) 60 days from the date of
such request in the event that such offering or such other material activity, as the case
may be, has not commenced during such 60 day period, (ii) 180 days from the effective date
of such offering, if applicable (iii) 120 days from the date of commencement of such other
material activity, if applicable, or (iv) such time that the Company is no longer in good
faith actively and diligently pursuing such offering or such activity; provided that such
right to delay a request to be exercised by the Company not more than twice in any 30 month
period.

     (iv) The rights to cause the Company to register Registrable Securities pursuant to
this Section 7.2 may be assigned by an Investor to any affiliate of such Investor, or if
such Investor is a partnership or limited liability company, any partner or partners or
member or members of such Investor, subject to any adjustment for stock splits, subdivisions
or similar capital reorganization of the Company’s capital stock; provided that (a) the
Company is, within a reasonable time after such transfer, furnished with written notice of
the name and address of such transferee or assignee and the securities with respect to such
registration rights are being assigned, (b) such assignment shall be effective only if
immediately following such transfer the further disposition of such securities by the
transferee or assignee is restricted under the Securities Act and (c) such rights may not be
assigned to any person or entity which, in the Company’s reasonable judgment, is a
competitor of the Company.

          7.2.3 Other Covenants of the Company.

          (i) In connection with any registration under Section 7.2 hereof, the Company shall
file the Registration Statement as expeditiously as possible, but in any event no later than
forty-five (45) days following receipt of any demand therefor, shall cause any such
Registration Statement to be declared effective at the earliest possible time, and shall
furnish each holder of Registrable Securities such number of prospectuses as shall
reasonably be requested.

          (ii) The Company shall pay all costs, fees and expenses (other than underwriting fees,
discounts and nonaccountable expense allowance applicable to the Registrable Securities) in
connection with all Registration Statements filed pursuant to

12

 

Sections 7.2.1 or 7.2.2 hereof including, without limitation, the Company’s legal and
accounting fees, printing expenses, and blue sky fees and expenses and the fees and expenses
of one counsel retained by the holders of Registrable Securities up to a maximum of $10,000.

          (iii) The Company shall take all necessary action which may be required to (i) qualify
or register the Registrable Securities included in the Registration Statement, for offering
and sale under the securities or blue sky laws of such states as are reasonably requested by
the holders of such securities and (ii) list the Registrable Securities on the principal
securities exchange (or the Nasdaq Stock Market) on which the Common Stock is so listed.

          (iv) The Company shall indemnify and hold harmless the holders of the Registrable
Securities from and against any and all losses, claims, damages and liabilities caused by
any untrue statement of a material fact contained in any Registration Statement, any
post-effective amendment to such Registration Statement, or any prospectus included therein
required to be filed or furnished by reason of this Section 7.2 or caused by any omission to
state therein a material fact required to be stated therein or necessary to make the
statements therein not misleading; except insofar as such losses, claims, damages or
liabilities are caused by any such untrue statement or omission based upon information
furnished or required to be furnished in writing to the Company by the holders of the
Registrable Securities or underwriter within the meaning of the Securities Act and each
officer, director, employee and agent of the holders of the Registrable Securities and
underwriter.

          (v) If for any reason the indemnification provided for in this Section 7.2 is held by a
court of competent jurisdiction to be unavailable to an indemnified party with respect to
any loss, claim, damage, liability or expense referred to therein, then the indemnifying
party, in lieu of indemnifying such indemnified party thereunder, shall contribute to the
amount paid or payable by the indemnified party as a result of such loss, claim, damage or
liability in such proportion as is appropriate to reflect not only the relative benefits
received by the indemnified party and the indemnifying party, but also the relative fault of
the indemnified party and the indemnifying party, as well as any other relevant equitable
considerations.

          (vi) The Company shall promptly deliver copies of all correspondence between the
Commission and the Company, its counsel or auditors and all memoranda relating to
discussions with the Commission or its staff with respect to the Registration Statement to
each holder of Registrable Securities included for such registration in such Registration
Statement pursuant to Sections 7.2.1 or 7.2.2 hereof requesting such correspondence and
memoranda and to the managing underwriter, if any, of the offering in connection with which
such holder’s Registrable Securities are being registered and shall permit each holder of
Registrable Securities and such underwriter to do such reasonable investigation, upon
reasonable advance notice, with respect to information contained in or omitted from the
Registration Statement as it deems reasonably necessary to comply with applicable securities
laws or rules of NASD Regulation, Inc. Such investigation shall include access to books,
records and properties and opportunities to

13

 

discuss the business of the Company with its officers and independent auditors, all to
such reasonable extent and at such reasonable times and as often as any such holder of
Registrable Securities or underwriter shall reasonably request.

     7.3 Restrictions on Transfer. Each Investor agrees that he or it will not, sell,
assign or transfer the Preferred Shares or the Conversion Shares in violation of the Securities
Act, or any other applicable state securities laws (“Other Securities Laws”) and understands that
he or it cannot sell, assign or transfer the Preferred Shares or the Conversion Shares unless the
Preferred Shares or the Conversion are registered under the Securities Act and Other Securities
Laws or an exemption from such registration is applicable to such transfer.

     7.4 Holdback. In the event of any registration of shares of Common Stock shall be in
connection with an underwritten public offering, each Investor agrees not to effect any sale of any
shares of Common Stock or any common stock equivalents (in each case, other than as part of such
public offering) during the 14 days prior to the effective date of such registration statement
(except as part of such registration statement) or during the period after such effective date as
reasonably required by the managing underwriter of an underwritten offering, but in no event longer
than the earlier of (i) the shortest period applicable to the officers, directors and stockholders
(other than the holders of the Preferred Shares) holding 5% or more of the capital stock of the
Company or (ii) 180 days.

     7.5 Use of Proceeds. The Company shall use the proceeds of the sale of the Preferred
Shares hereunder for (i) capital expenditures in connection with the Company’s proposed Carthage,
Missouri facility and (ii) general working capital purposes in the ordinary course of business.

     7.6 Expenses. The Company shall pay all of its own costs and expenses and the costs
and expenses of the Investors (up to $25,000) in connection with the preparation, negotiation and
execution of this Agreement and the consummation of the transactions contemplated hereby, which
costs and expenses shall include, without limitation, the reasonable fees and expenses of
Investors’ counsel.

     7.7 Antidilution.

          7.7.1 In the event that the Company shall at any time or from time to time after the date
hereof issue, grant or sell any Additional Stock (as defined in Section 7.8.1, but for the purposes
of this Section 7.7, such definition shall not include the items set forth in clause (i) of Section
7.8.1) for a consideration, exercise or conversion price per share (as the case may be, the
“Anti-dilution Price”) less than the then current Effective Price (as defined below), then, in
connection with such issuance, the Company shall issue to the Investors, without any additional
consideration paid by the Investors, additional shares of Common Stock (such shares, the
“Anti-Dilution Shares”) such that after the issuance of the Anti-dilution Shares, the Effective
Price of the shares of Common Stock (other than the Preferred Shares or the Conversion Shares)
owned by all of the Investors shall equal such Anti-dilution Price.

          “Effective Price” shall initially be $29.00 per share, as adjusted as provided in this Section
7.7.

14

 

          7.7.2 The Company (and any successor corporation) shall take all action necessary so that a
number of shares of the authorized but unissued Common Stock (or common stock in the case of any
successor corporation) sufficient to provide for issuance of additional shares of Common Stock to
the investors in accordance with the provisions of Section 7.7.1 above are at all times reserved by
the Company (or any successor corporation), free from preemptive rights, for such issuance.

          7.7.3 Whenever the Company shall take any of the actions specified in Section 7.7 which would
result in any adjustment in the Effective Price, the Company shall give notice to the Investors,
which notice shall be made within 10 days after the effective date of such adjustment and shall
state the adjustment and the Effective Price. Notwithstanding the foregoing notice provisions,
failure by the Company to give such notice or a defect in such notice shall not affect the binding
nature of such corporate action of the Company.

          7.7.4 For the purpose of any computation to be made in accordance with Section 7.7.1, the
following provisions shall apply:

          (i) In case of the issuance or sale of shares of Common Stock for a consideration part
or all of which shall be cash, the amount of the cash consideration therefor shall be deemed
to be the amount of cash received by the Company for such shares (or, if shares of Common
Stock are offered by the Company for subscription, the subscription price, or, if such
securities shall be sold to underwriters or dealers for public offering without a
subscription offering, the initial public offering price) before deducting therefrom any
compensation paid or discount allowed in the sale, underwriting or purchase thereof by
underwriters or dealers or others performing similar services, or any expenses incurred in
connection therewith.

          (ii) In the case of the issuance or sale (otherwise than as a dividend or other
distribution on any stock of the Company) of shares of Common Stock for a consideration part
or all of which shall be other than cash, the amount of the consideration therefor other
than cash shall be deemed to be the fair market value of the consideration as determined in
good faith by the Board plus the amount of cash, if any.

          (iii) In the case of the issuance of options, rights, or warrants to purchase or
subscribe for shares of Common Stock, securities convertible into or exchangeable for shares
of Common Stock, or options, rights or warrants to purchase or subscribe for any such
convertible or exchangeable securities, the following provisions shall apply:

     (A) The effective price for the issuance, grant or sale of any options,
rights or warrants shall be deemed to be the minimum purchase price per
share provided for in such options, rights or warrants at the time of
issuance plus the consideration, if any, received by the Company in
connection with the sale or issuance of such options, rights or warrants;
provided, however, that upon the termination of such options, rights or
warrants, if any thereof shall not have been exercised, the Effective Price
then in effect shall forthwith be readjusted and thereafter be the price

15

 

which it would have been had such adjustment been made on the basis of
the issuance only of shares of Common Stock actually issued or issuable upon
the exercise of those options, rights or warrants as to which the exercise
of rights shall not have expired or terminated unexercised.

     (B) The effective price for the issuance, grant or sale of any
convertible or exchangeable securities shall be deemed to be the
consideration received by the Company in connection with the sale of such
securities plus the consideration, if any, receivable by the Company upon
the conversion or exchange thereof; provided, however, that upon the
termination of the right to convert or exchange such convertible or
exchangeable securities (whether by reason of redemption or otherwise), the
Effective Price then in effect shall forthwith be readjusted and thereafter
be the price which it would have been had such adjustment been made on the
basis of the issuance only of shares actually issued or issuable upon the
conversion or exchange of those convertible or exchangeable securities as to
which the conversion or exchange rights shall not have expired or terminated
unexercised.

     (C) If any change shall occur in the price per share provided for in
any of the options, rights or warrants referred to in Section 7.7.4(iii)(A),
or in the price per share at which the securities referred to in Section
7.7.4(iii)(B) are convertible or exchangeable, such options, rights or
warrants or conversion or exchange rights, as the case may be, shall be
deemed to have expired or terminated on the date when such price change
became effective in respect of shares not theretofore issued pursuant to the
exercise or conversion or exchange thereof, and the Company shall be deemed
to have issued upon such date new options, rights or warrants or convertible
or exchangeable securities at the new price in respect of the number of
 shares issuable upon the exercise of such options, rights or warrants or the
conversion or exchange of such convertible or exchangeable securities.

          7.7.5 In case the Company shall pay or make a dividend or other distribution to all holders of
its Common Stock in shares of Common Stock, the Effective Price in effect at the opening of
business on the day following the date fixed for the determination of shareholders entitled to
receive such dividend or other distribution shall be reduced by multiplying such Effective Price by
a fraction, the numerator of which shall be the number of shares of Common Stock outstanding at the
close of business on the date fixed for such determination, and the denominator of which shall be
the sum of the numerator and the total number of shares constituting such dividend or other
distribution, such reduction to become effective immediately after the opening of business on the
day next following the date fixed for such determination. For the purposes of this Section 7.7.5,
the number of shares of Common Stock at any time outstanding shall not include shares of Common
Stock held in the treasury of the Company.

          7.7.6 In case the outstanding shares of Common Stock shall be subdivided into a greater number
of shares of Common Stock, the Effective Price in effect at the opening of

16

 

business on the day following the day upon which such subdivision becomes effective shall be
proportionately reduced, and, conversely, in case the outstanding shares of Common Stock shall each
be combined into a smaller number of shares of Common Stock, the Effective price in effect at the
opening of business on the day following the day upon which such combination becomes effective
shall be proportionately increased, such reduction or increase, as the case may be, to become
effective immediately after the opening of business on the day following the day upon which such
subdivision or combination becomes effective.

          7.7.7 Anything contained in this Section 7.7 to the contrary notwithstanding, the rights
granted under this Section 7.7 shall terminate and be of no further force or effect upon earlier of
(i) the closing of a firm commitment underwritten public offering pursuant to an effective
registration statement filed under the Securities Act covering the offer and sale of Common Stock
for the account of the Company in which the per share price is based on a pre-offering valuation of
the Company of not less than $60,000,000 or (ii) upon any merger, or consolidation of the Company
with or into another entity where the stockholders of the Company immediately prior to such event
hold less than a majority of the outstanding voting power of the surviving or consolidated entity,
other than a merger for the sole purpose of effecting a reorganization or change in domicile of the
Company.

     7.8 Right of First Offer. Subject to the terms and conditions set forth below, from
the date hereof and until such time as the Company effectuates an offering of its Common Stock to
the public, each Investor shall have the right of first offer to purchase, on a pro rata basis, any
Additional Stock which the Company may, from time to time, propose to issue and sell. Each
Investor’s pro rata share, for purposes of this right of first offer, shall be determined by
dividing (x) the total number of shares of Common Stock which are owned, or obtainable by such
Investor upon conversion of the Preferred Shares or any other convertible securities owned by such
Investor and upon exercise of warrants, options or rights issued to such Investor, by (y) the total
number of shares of outstanding Common Stock on a fully-diluted basis. The failure by any
Investor to exercise its right of first offer with respect to any particular issuance, shall not
affect in any way such right with respect to any subsequent issuance.

          7.8.1 For purposes of this Section 7.8, the term “Additional Stock” shall mean Common Stock or
options, warrants or other rights to acquire or securities convertible into or exchangeable for
shares of Common Stock, including shares held in the Company’s treasury, but shall not include (i)
securities offered to the public pursuant to a registration statement approved by the Board of
Directors of the Company and filed with the Securities and Exchange Commission for a public
offering and sale of securities of the Company, (ii) securities issued for the acquisition of
another corporation or other entity by merger, purchase of all or substantially all of the assets
of such other corporation or other entity or other reorganization resulting in the ownership by the
Company of not less than 51% of the voting power of such other corporation or entity; provided that
such transaction is approved by a majority of the disinterested directors of the Company, (iii)
options to purchase up to 75,000 shares of Common Stock pursuant to the Company’s 2002 Stock Option
Plan and any options to purchase shares of Common Stock issued pursuant to the Company’s future
stock option plans or similar plans approved by the Board of Directors and the stockholders of the
Company, but only to the extent that not more than 15% of the options to purchase Common Stock
subject to any one such plan are issued to any one person or entity (including his or its
respective affiliates, as the case may be), (iv) securities issued as a

17

 

result of any stock split, stock dividend or reclassification of Common Stock, distributable
on a pro rata basis to all holders of Common Stock, (v) securities issued as a result of any stock
split, stock dividend or reclassification of Series A Preferred Stock, (vi) securities issued to
vendors, strategic partners or consultants; provided that, in the case that such vendors, strategic
partners or consultants are affiliates of the Company, such issuance is approved by a majority of
the disinterested directors of the Company, (vii) securities issued to lenders pursuant to any bank
financing arrangement approved by the Board of Directors (including any securities issued upon
exercise of such securities), (viii) securities sold to stockholders of the Company pursuant to a
general rights offering to all stockholders, offered on a pro rata basis, (ix) securities issuable
upon exercise of options, warrants or other rights to acquire or securities convertible into or
exchangeable for shares of Common Stock that are currently outstanding, (x) securities issued to
directors of the Corporation solely as compensation for service to the Corporation as a director or
(xi) securities issued upon exercise or conversion of any Additional Stock..

          7.8.2 In the event the Company intends to issue any Additional Stock, it shall give each
Investor written notice (“First Offer Notice”) of such intention, describing the type of Additional
Stock to be issued, the price thereof and the general terms upon which the Company proposes to
effect such issuance. Each Investor shall have 20 days (unless a shorter period of time is agreed
upon by the holders of a majority of the shares of Preferred Stock and Common Stock entitled to
first offer rights hereunder) from the date of any such First Offer Notice (the “Initial Exercise
Period”) to agree to purchase such Additional Stock for the purchase price and upon the terms and
conditions specified in the Company’s First Offer Notice by giving written notice to the Company
stating the quantity of Additional Stock to be so purchased. In the event there is a material
change in the terms upon which Additional Stock is offered by the Company following delivery of the
First Refusal Notice, the Company will issue a new First Refusal Notice and each Investor will have
the longer of (i) the remainder of the Initial Exercise Period or (ii) 10 days from the date of
issuance of the new First Refusal Notice to deliver a new notice of irrevocable acceptance to
purchase the New Securities on the new terms specified in such new First Refusal Notice.

          7.8.3 If the Investors do not elect to purchase all of the Additional Stock so offered, the
Seller shall have the right to sell the unsold Additional Stock to any third party within ninety
(90) days after the date of the First Offer Notice at a purchase price not less than, and upon
terms and conditions not more favorable than, the purchase price and terms and conditions set forth
in the First Offer Notice. If the Seller shall not sell all of the Offered Interest within such
ninety (90) day period, such Offered Interest shall again be subject to the terms, conditions and
restrictions set forth in this Section 7.8.

          7.8.4 For convenience in administration, the Company may offer and sell Additional Stock
covered by the right provided in Section 7.8 without first offering such securities to the
Investors, so long as the Investors are given the opportunity to purchase their pro rata amount
(which shall be calculated after giving effect to such issuance to the Investors of their pro rata
amount) within 20 days after the close of the sale of the Additional Stock.

     7.9 1998 Purchase Agreement. The 1998 Purchase Agreement is hereby terminated and
shall be of no further force or effect, other than the provisions of Section 7 thereof, which shall
continue in effect in accordance with its respective terms.

18

 

     7.10 Third Party Beneficiaries. Anything contained in this Agreement to the contrary
notwithstanding, for purposes of this Section 7, CWT Venture Group I LLC shall be (i) deemed to be
an Investor and (ii) entitled to all of the rights of an Investor as a third party beneficiary of
the Investor’s rights under Section 7 of this Agreement.

8. Miscellaneous.

     8.1 All communications hereunder will be in writing and, except as otherwise provided, will be
delivered at, or mailed by certified mail, return receipt requested, or telegraphed to, the
following addresses:

	 	 	 	 	 
	 

	 	If to the Company, to:
	 	Changing World Technologies, Inc.
	 

	 	 	 	460 Hempstead Avenue
	 

	 	 	 	West Hempstead, New York 11552
	 

	 	 	 	Attn: President
	 
	 	 	 	 
	 

	 	 	 	with a copy to:
	 
	 	 	 	 
	 

	 	 	 	Michael A. King
	 

	 	 	 	Weil, Gotshal & Manges, LLP
	 

	 	 	 	767 Fifth Avenue
	 

	 	 	 	New York, NY 10153

          If to an Investor, to the address set forth opposite such Investor’s name on Schedule A
annexed hereto, with a copy to: Blank Rome LLP, 405 Lexington Avenue, New York, NY 10024, Attn:
Martin Luskin, Esq.

     8.2 This Agreement shall be deemed to have been made and delivered in New York City and shall
be governed as to validity, interpretation, construction, effect and in all other respects by the
internal laws of the State of New York. Each of the Investors and the Company (1) agrees that any
legal suit, action or proceeding arising out of or relating to this Agreement, shall be instituted
exclusively in New York State Supreme Court, County of New York, or in the United States District
Court for the Southern District of New York, unless such court shall have refused such
jurisdiction, (2) waives any objection which the Investors or the Company may have now or hereafter
to the venue of any such suit, action or proceeding, and (3) irrevocably consents to the
jurisdiction of the New York State Supreme Court, County of New York, and the United States
District Court for the Southern District of New York in any such suit, action or proceeding. Each
of the Investors and the Company further agrees to accept and acknowledge service of any and all
process which may be served in any such suit, action or proceeding in the New York State Supreme
Court, County of New York, or in the United States District Court for the Southern District of New
York and agrees that service of process upon the Investors or the Company, as the case may be,
mailed by certified mail to such Investor’s address or the Company’s address, as the case may be,
set forth in Section 8.1 above shall be deemed in every respect effective service of process upon
the Investors or the Company, as the case may be, in any such suit, action or proceeding.

19

 

     8.3 Each party hereto agrees to use its reasonable best efforts to take any action which may
be necessary or appropriate or reasonably requested by the other party hereto in order to
effectuate or implement the provisions of this Agreement.

     8.4 This Agreement is not assignable without the consent of the other parties hereto. In the
event of an assignment, the rights and obligations of the parties under this Agreement shall bind
and inure to the benefit of the parties and their respective successors and assigns.

     8.5 Each of the parties hereto hereby agrees that representations and warranties made by or on
behalf of him or it in this Agreement or in any document or instrument delivered pursuant hereto
shall survive the Closing Date and continue in effect until the second anniversary of the Closing
Date. The covenants and agreements contained in this Agreement or in any document or instrument
delivered pursuant hereto shall survive the Closing Date and shall continue in effect in accordance
with their respective terms.

     8.6 This Agreement may be executed in separate counterparts, all of which shall constitute one
agreement.

20

 

          IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first above
written.

	 	 	 	 	 
	 	COMPANY:

CHANGING WORLD TECHNOLOGIES, INC.

 	 
	 	By:  	 	 
	 	Name: 	  	 	 
	 	Title: 	  	 	 
	 

	 	 	 	 	 
	 	

INVESTORS:

CWT VENTURES GROUP I LLC

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 

	 	 	 	 	 
	 	CWT VENTURES GROUP II LLC

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 

	 	 	 	 	 
	 	Eizel 33, LLC

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 

21

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