Document:

Exhibit 10.22

               JOINT PRODUCT EXPLOITATION AND MARKETING AGREEMENT

     This Joint Product Exploitation and Marketing Agreement ("Agreement") is
made and entered into as of October 2, 2002, by and between ALSTOM Power Inc.
("ALSTOM"), a Delaware corporation, acting by and through its Environmental
Control Systems Division, having offices located at 1409 Centerpoint Boulevard,
Knoxville, Tennessee 37933, and ADA Environmental Solutions LLC ("ADA-ES") a
Colorado limited liability company, having its principal place of business at
8100 South Park Way, B-2, Littleton, CO 80120. (ADA-ES and ALSTOM are sometimes
collectively referred to herein as the "Parties" and individually as a "Party").

                                    RECITALS

     WHEREAS, ADA-ES represents that it possesses the rights to certain carbon
based technology utilized in the control of mercury generated from the
combustion of fossil fuels, and ADA-ES further represents that it owns certain
intellectual property and has rights under certain patents pending both of which
pertain to certain carbon based technology, as well as related technical
information and improvements relating to those patents pending;

     WHEREAS, ALSTOM represents that it possess marketing and process knowledge
in the air pollution control industry and desires to exploit said certain carbon
based technology of ADA-ES, and that ALSTOM wishes to obtain, and ADA-ES is
willing to grant, certain marketing rights with respect to said certain carbon
based technology of ADA-ES, all as more specifically set forth herein; and

     WHEREAS, the Parties presently desire to jointly exploit certain mercury
removal processes and products; and further presently desire to thereafter
jointly market such processes and products, all as more specifically set forth
herein.

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

1.0 Definitions. Unless otherwise defined or stated, "days" shall mean calendar
days, and the following terms shall have the meanings stated below:

1.1 "Affiliate" means a person or entity that directly, or indirectly through
one or more intermediaries, controls or is controlled by, or is under common
control with, the person or entity specified.

1.2 "Mercury Control Package", hereafter referred to as "MCP", shall include the
carbon storage, feed and distribution equipment and/or supply of activated
carbon, mercury CEM, and ash recovery/recycling technology that ADA shall
supply, and the technical and functional specifications of which are further
identified in the Division of Work set forth in Schedule 1.

1.3 "Environmental Control System", hereafter referred to as "ECS", means any
system, item of equipment or component and, any method for manufacturing such
system, item of equipment or component, having as its primary function the
control (including the elimination, reduction or conversion) of emissions of any
of the various components of post-combustion flue gas generated from fossil
fueled power plants, all as ALSTOM shall supply, and the technical and
functional specifications of which are further identified in the Division of
Work set forth in Schedule 1. Such ECS includes, but is not limited to
desulphurization systems, wet and dry scrubbers, selective catalytic converter
systems, and particulate collection devices. Such ESC specifically excludes the
MCP.

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1.4 "Industrial" means any power plant owned or operated by a publicly or
privately held industrial entity generating power primarily for its own use,
notwithstanding the ancillary sale of excess power to a Utility.

1.5 "Intellectual Property" means any and all patents pending, trade secrets,
confidential or proprietary information, copyrights, trademarks, know-how,
inventions, processes, or algorithms of a Party associated with certain mercury
removal processes and products as specified herein. ADA Intellectual Property
that pertains to certain carbon based technology utilized in the control of
mercury generated from the combustion of fossil fuels, and specifically the
Mercury Control Package, is detailed in Schedule 2.

1.6 "Intellectual Property Rights" means any and all rights existing now or in
the future related to the Intellectual Property and arising under patent law,
copyright law, industrial design rights law, semiconductor chip and mask work
protection law, trade secret law, trademark law, unfair competition law, and any
and all similar proprietary rights as may be in effect from time to time during
the term of this Agreement, and any and all renewals, extensions, and
restorations thereof, now or hereafter in force and effect worldwide.

1.7 "Licensed Rights" means the rights and licenses granted by and between the
Parties pursuant to any Marketing License, internal use license, trademark
license and/or any other license granted pursuant to the terms of this Agreement
as set forth in Section 3.

1.8 "Marketing License" means the license under ADA-ES' Intellectual Property
and Intellectual Property Rights granting ALSTOM the right to market,
demonstrate, distribute, or sell MCP to third party end users, subject to the
other limitations in this Agreement.

1.9 "Joint Intellectual Property" means any and all confidential or proprietary
information, know-how, inventions, processes, or algorithms resulting from work
done jointly by the Parties under this Agreement. Those joint developments shall
be done either as a project jointly executed or agreed upon joint research and
development.

1.10 "Joint Intellectual Property Rights" means any and all intellectual
property rights that are directed to the Joint Intellectual Property and that
result from work done jointly by the Parties under this Agreement, and which
also arise under patent law, copyright law, industrial design rights law,
semiconductor chip and mask work protection law, trade secret law, trademark
law, unfair competition law, and any and all similar proprietary rights as may
be in effect from time to time during the term of this Agreement, and any and
all renewals, extensions, and restorations thereof, now or hereafter in force
and effect worldwide.

1.11 "Utility" means any regulated or non-regulated entity (depending on the
industry structure), other than an Industrial entity, that owns, operates and
maintains power generation plants and has as its primary business the providing
of electric energy to end use customers. For avoidance of doubt, a Utility does
include the Tennessee Valley Authority, but does not include any other federal
power marketing agencies.

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1.12 "Waste-to-Energy" means a power plant burning municipal solid waste or
other refuse related fuel to generate electricity for sale other than primarily
to an Industrial entity.

2.0 Duties and Capabilities.

2.1 Immediately upon entering into this Agreement, the Parties agree that they
will meet for the purposes of determining the nature of the information
(proprietary, confidential or otherwise) and such Intellectual Property that
shall be exchanged there between them such that the Parties may commence to
generate marketing plans and sales objectives, and to identify other activities
relating to the exploitation of the MCP that are required to meet the objectives
of this Agreement.

2.2 The principal objective of this Agreement shall be to maximize, through the
exploitation of the MCP, the sale and use of carbon based technology for the
removal of mercury from the flue gas generated from fossil fired Utility and
Industrial facilities, as well as the flue gas generated from Waste-to-Energy
facilities.

2.3 Recognizing that both Parties each possess information related to the
removal of mercury from the flue gas generated from the combustion of fossil
fuels, the Parties intend to exchange between them such information as the
disclosing Party deems to be appropriate for the purposes of optimizing the
market impact and penetration of the MCP offered for sale in concert with an ECS
as contemplated in Section 4.0. Such information to be exchanged between the
Parties shall include, and ADA-ES agrees that it shall disclose to the extent
allowed under its DOE contracts, raw data pertaining to mercury removal
efficiencies in ESPs and fabric filters generated from DOE and EPA sponsored
projects including test protocols, analytical lab reports, and any other
information reasonably requested by ALSTOM to support commercial guarantees in
joint commercial offerings of the MCP and ECS.

2.4 ADA-ES possesses the capability to provide carbon products capable of
meeting the specifications required for the employment thereof with the MCP.

2.5 ALSTOM possesses the expertise to supply ECS for the removal of pollutants
from the flue gas generated from the combustion of fossil fuels.

2.6 ADA-ES and ALSTOM shall jointly exploit their combined resources and
technologies in such a way as to maximize the share to be obtained jointly of
the market for the removal of mercury from the flue gas generated from the
combustion of fossil fuels.

2.7 The rights and obligations of the Parties under this Agreement, including
but not limited to any licenses granted by and between the Parties in Section 3,
shall be pursued and effective in the global territory defined to include all
geographic areas worldwide for Industrial, Utility and power plant applications.

3.0 Grant.

3.1 The Parties acknowledge that the marketing of the MCP shall be a joint
effort.

     3.1.1 Notwithstanding any licenses that may be granted by one Party to the
     other Party, each Party shall retain ownership of all of its respective
     Intellectual Property in existence as of the Effective Date of this
     Agreement, all associated documentation, all related modifications and
     derivative works, and all Intellectual Property Rights related thereto.
     Neither Party's services that may be rendered hereunder to the other Party
     shall be deemed a "work made for hire" for such other Party under
     applicable copyright laws.

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     3.1.2 Joint Intellectual Property shall be jointly owned, except to the
     extent that such Joint Intellectual Property pertains to the MCP per se
     that ADA-ES is capable of providing, it shall be owned by ADA-ES; and to
     the extent that such Joint Intellectual Property pertains to the ECS per se
     that ALSTOM has the expertise to supply, such Joint Intellectual Property
     shall be owned by ALSTOM. Similarly, the Joint Intellectual Property Rights
     for the Joint Intellectual Property, which is owned by ADA-ES, shall be
     owned by ADA-ES, and the Joint Intellectual Property Rights for the Joint
     Intellectual Property, which is owned by ALSTOM, shall be owned by ALSTOM.

3.2 Licenses. Subject to the licensing restrictions and reservation of rights
contained herein, each of the Parties intends to commercially exploit the MCP
and the Intellectual Property relating thereto. Therefore, to the extent
required in order to effect such commercial exploitation of the MCP, each of the
Parties grants to the other Party the licensing rights set forth below.

     3.2.1 ADA-ES Grants. ADA-ES hereby grants to ALSTOM:

     (a)  Marketing License. An Exclusive Marketing License under ADA-ES'
          Intellectual Property specifically directed to the MCP (including
          Joint Intellectual Property created during the term of this Agreement
          and owned by ADA-ES for the MCP) to the extent necessary for the
          commercial use and exploitation by ALSTOM of the MCP.

     (b)  Additionally, ADA-ES grants to ALSTOM a limited, royalty-free license
          under ADA-ES' Intellectual Property to use certain of ADA-ES'
          Intellectual Property in order for ALSTOM to exploit as contemplated
          by this Agreement the MCP.

     3.2.2 ALSTOM Grants. ALSTOM hereby grants to ADA-ES:

     (a)  Marketing License. An Exclusive Marketing License under ALSTOM's
          Intellectual Property specifically directed to the MCP (including
          Joint Intellectual Property created during the term of this Agreement
          and owned by ALSTOM for the MCP) to the extent necessary for the
          commercial use and exploitation by ADA-ES of the MCP.

     (b)  Additionally, ALSTOM grants to ADA-ES a limited, royalty-free license
          under ALSTOM's Intellectual Property to use certain of ALSTOM's
          Intellectual Property in order for ADA-ES to exploit as contemplated
          by this Agreement the MCP.

3.3 This exclusive marketing and exploitation relationship shall be exclusive
except;

     3.3.1 In those cases where after diligent effort the proposed client will
     not accept the ECS that ALSTOM proposes to supply to the client or the
     proposed client will not accept the MCP that ADA-ES proposes to provide to
     the client. In such an event, the Party that is acceptable to the customer
     may pursue its own limited scope on an individual basis.

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     3.3.2 Sales of the MCP only that do not include ECS. ADA-ES shall be free
     to respond to requests for quotations for MCPs and to supply MCPs to any
     Industrial, Utility and power plant applications for engineering companies
     and other air pollution control vendors where the request and supply by
     ADA-ES does not include ECS.

     3.3.3 Sales of ECS only that do not include the MCP. ALSTOM shall be free
     to respond to requests for quotations for ECS and to supply ECSs to any
     Industrial, Utility and power plant applications for engineering companies
     and other air pollution control vendors where the request and supply by
     ALSTOM does not include MCP.

     3.3.4 Prior business relationships, if any, as designated in attached
     Schedule 3. After execution of the Agreement, any additional exclusions
     will be mutually agreed upon between the parties through the designated
     marketing channels as they are identified.

4.0 Joint Commercial Offerings

4.1 The Parties agree that ALSTOM shall take the lead in preparing a proposal to
the client for joint commercial offerings of the MCP packaged with an ECS,
provided however, if particular circumstances indicate for a specific project
that this is not the most advantageous approach to achieve a sale, then the
Parties will mutually decide if ADA-ES will be the lead Party, or an alternate
approach will be followed, for purposes of submitting such proposal to the
client for such project.

4.2 Each Party will cooperate with the other Party in determining the
appropriate division of work between the Parties, and in supplying the client
with the required ECS and services in the case of ALSTOM and in providing the
client with the required MCP in the case of ADA-ES to meet the client's
specifications and/or requirements. Each party shall be fully responsible for
the performance and deficiencies of its respective scope of supply as set forth
in the division of work in Schedule 1. The Parties further agree that for each
particular joint commercial offering, (i) each Party shall adapt and refine, as
appropriate, its respective division of work based on the form in Schedule 1 for
the specific requirements of the customer and project (e.g. coal type, gas flow
and duct design); and (ii) commercial terms and conditions as between the
Parties, including any warranties, guarantees, and remedies and limitations for
any breaches thereto, shall be mutually agreed upon in a subcontract or other
definitive agreement executed by the Parties. Such agreement between the Parties
shall be entered into with due consideration of the respective terms and
conditions in the sales agreement with the customer which results from the joint
commercial offering. Notwithstanding the foregoing and for the avoidance of
doubt, nothing contained herein shall require a Party to commit to or be
obligated to perform any particular term of sale that it does not agree to offer
or to be bound by as evidenced by the subcontract or other definitive agreement
between the Parties, or as otherwise indicated in the joint commercial offering.

4.3 The non-lead Party will compile and submit to the lead Party for inclusion
in the proposal to the client all technical information as well as warranty and
guarantee information to the extent that all such information may be required
from the non-lead Party, and the non-lead Party's pricing for the non-lead
Party's scope of supply. Neither Party will make any changes to the other
Party's scope of supply unless such action has been specifically agreed to in
writing by both Parties prior to their submission of such proposal to the
client.

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4.4 Most Favorable Pricing discount. ADA-ES agrees that for all joint commercial
offerings in which ADA-ES's scope will be offered as a subcontractor to ALSTOM,
ADA shall provide ALSTOM with a discounted price on its scope of work equal to
5% less than the lowest price that ADA-ES would otherwise quote for the MCP such
that, with the discount of 5%, ALSTOM receives the most favorable price from
ADA-ES than any of its other customers who may be permitted to purchase an MCP
directly from ADA-ES pursuant to paragraph 3.3 above, or from sales not
otherwise precluded by virtue of this Agreement.

5.0 Exploitation

5.1 ALSTOM and ADA-ES plan to exploit potential applications for employing ECS
and MCP for the removal of mercury from the flue gas generated from the
combustion of fossil fuels. The Parties agree to meet at least annually to
establish the goals for such exploitation for that year and, if appropriate, for
subsequent years as well. Each Party agrees to fund its own portion of the
effort involved in such exploitation work. The Parties shall also mutually agree
on whether to seek third party exploitation funding and, if the Parties should
so mutually agree, on the type of such funding and on the identity of the third
party funding entity from whom such third party exploitation funding would be
sought.

5.2 Sales Objectives. The Parties agree to meet periodically to coordinate and
select sales opportunities as well as to coordinate the joint sales and
marketing activities of both Parties as contemplated in 5.1 above. Each Party
shall be responsible for funding its own portion of the effort involved both in
coordinating and selecting such sales opportunities and in coordinating such
joint sales and marketing activities.

5.3 Auditing. No more than once per calendar year, each Party may employ an
independent Third Party auditor to perform a reasonable inspection and audit of
the books, records and systems of the other Party hereto to verify compliance by
the other Party with this Exploitation Agreement. Notwithstanding the foregoing,
the scope of the audit to be conducted by such independent Third Party auditor
shall be limited to the other Party's performance under this Exploitation
Agreement, and in particular the obligations set forth in Sections 3, 4, and 5,
and the scope shall not be broadened to include unrelated business segments of
the other Party or the other Party's global financial performance. The audited
Party agrees to cooperate in such inspections and audits. All such audits by the
independent Third Party auditor shall be conducted during normal business hours
and with at least 7 days advance written notice from the auditing Party to the
Party that is to be audited. Each Party shall bear its own costs and expenses in
connection with the conducting of such an audit by such an independent Third
Party auditor.

6.0 Term and Termination

6.1 Term. This Agreement shall become effective on October 2, 2002 ("Effective
Date") and, shall remain in effect through October 2, 2007, unless terminated
sooner in accordance with the terms set forth herein. The Agreement will
automatically renew for a second five-year term unless terminated by one of the
Parties.

6.2 Termination. In addition to any other termination right granted elsewhere
herein, this Agreement:

     6.2.1 May be terminated upon the mutual agreement of the Parties;

     6.2.2 May be terminated by the non-breaching Party by written notice to the
     other Party if: (i) either Party commits a breach of any material provision
     hereof; (ii) notice is provided to the breaching Party specifying the
     nature of the material breach; and (iii) the breaching Party fails to take
     steps to cure the material breach within 30 days of receiving notice
     thereof from the other Party;

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     6.2.3 May be terminated immediately upon notice, at the option of the Party
     not involved in the following: (i) if proceedings are commenced by or
     against a Party under the U.S. Federal Bankruptcy Code or any similar U.S.
     Federal or State laws for the relief of debtors and such proceedings are
     not dismissed within 60 days after the commencement thereof, or (ii) if
     there is an appointment of a trustee or receiver for a Party or a major
     part of a Party's assets and such trustee or receiver is not discharged
     within 60 days after the appointment thereof.

     6.2.4 May be terminated one (1) year after the Effective Date by either
     Party upon three (3) months prior written notice to the other Party.

6.3 Effect of Termination. Upon termination: (i) the obligations under Sections
7.0, 8.0 and 9.0 shall survive for 5 years after the termination of this
Agreement; (ii) if termination of this Agreement results from the breach thereof
by one of the Parties, the breaching Party shall cooperate and assist in
transitioning to the nonbreaching Party the service and maintenance of all of
the breaching Party's customers for the MCP; (iii) the breaching Party shall
remove and return to the nonbreaching Party all copies of information in the
breaching Party's possession relating to the MCP that the breaching Party has
received from the nonbreaching Party under this Agreement; and (iv) the
Receiving Party shall return to the Disclosing Party all Confidential
Information received by the Receiving Party from the Disclosing Party under this
Agreement.

6.4 Joint Property in Termination. If this Agreement is terminated for any
reason, each Party shall have non-exclusive, royalty-free rights to themselves
utilize any Joint Intellectual Property of the other Party, but shall not have
the right to sublicense rights to, or otherwise permit the use of the other
Party's Joint Intellectual Property by, third parties other than the licensee's
Affiliates.

7.0 Confidential Information

7.1 Confidential Information. In the course of carrying out this Agreement, one
Party (the "Receiving Party") may be exposed to certain proprietary
technologies, processes, software, trade secrets and/or know-how ("Confidential
Information") of the other Party (the "Disclosing Party"). Confidential
Information shall not include any information which: (i) was publicly known or
made generally available in the public domain prior to the time of disclosure;
(ii) during the Term of this Agreement becomes publicly known or is made
generally available to the public through no fault of the Receiving Party; (iii)
is in the possession of the Receiving Party, without confidentiality
restrictions, at the time of disclosure as shown by competent evidence; or (iv)
is independently developed by the Receiving Party.

7.2 Limited Use. The Receiving Party agrees not to use any Confidential
Information for any purpose except in accordance with this Agreement. The
Receiving Party agrees not to disclose any Confidential Information to Third
Parties or to employees of the Receiving Party, except to authorized Third
Parties under this Agreement and to those employees of the Receiving Party for
whom it is appropriate to disclose and permit the use of such Confidential
Information for purposes of this. The Receiving Party shall not reverse
engineer, disassemble, or decompile any of the Disclosing Party's software or
technology, except as contemplated in this Agreement.

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7.3 Maintenance of Confidentiality. The Receiving Party shall take all
commercially reasonable measures to protect the secrecy of and avoid
unauthorized disclosure and unauthorized use of the Confidential Information
disclosed thereto by the Disclosing Party. Without limiting the foregoing, the
Receiving Party shall take at least those measures that it takes to protect its
own most highly confidential information. The Receiving Party shall reproduce
any proprietary rights notices on any approved copies of Confidential
Information in the same manner in which such notices were set forth in or on the
original. The Receiving Party may disclose Confidential Information only to
Third Parties authorized herein, provided that such Third Parties agree to be
bound by obligations of confidentiality substantially identical to the
obligation of confidentiality imposed upon the Receiving Party under this
Section 7.0 (Confidentiality).

8.0 Warranties, Covenants & Indemnification

8.1 Warranties & Covenants of ADA-ES. ADA-ES hereby represents and warrants and
covenants to ALSTOM, and its successor and assigns, that:

     8.1.1 ADA-ES is the exclusive owner of its Intellectual Property or has
     licensing rights to its Intellectual Property and that it has the right to
     grant the Licensed Rights hereunder and that its Intellectual Property
     Rights do not prevent the performance by ADA-ES of its obligations
     hereunder. ADA-ES further warrants that it has not granted to any third
     party or to any ALSTOM competitor a license that conflicts with the
     Licensed Rights granted herein or executed an agreement, or otherwise made
     representations, that competes with the spirit of this Agreement by
     providing substantially the same benefits granted in Sections 3 and 4 to
     any third party or to any ALSTOM competitor;

     8.1.2 ADA-ES has not received, nor, to the best of its knowledge, does
     there exist, any threat, demand or notice of claim from any person or
     entity asserting that ADA-ES' use of any of its Intellectual Property for
     the purposes contemplated by this Agreement constitutes any infringement,
     interference, violation, misappropriation, breach or wrongful use of the
     intellectual property rights of any other person or entity, and to the best
     of its knowledge, its Intellectual Property relating to the MCP does not
     infringe the intellectual property rights of any third party or any of
     ALSTOM's competitors;

     8.1.3 ADA-ES is not party to any proceeding or outstanding decree, order,
     judgment or stipulation restricting in any manner the use, transfer, or
     licensing by ADA-ES of its Intellectual Property that is subject to the
     provisions of this Agreement;

8.2 Warranties & Covenants of ALSTOM. ALSTOM hereby represents and warrants and
covenants to ADA-ES, and its successor and assigns, that:

     8.2.1 ALSTOM is the exclusive owner of its Intellectual Property or has
     licensing rights to its Intellectual Property and that it has the right to
     grant the Licensed Rights hereunder. ALSTOM further warrants that it has
     not granted to any third party or ADA-ES competitor a license that
     conflicts with the Licensed Rights granted herein;

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     8.2.2 ALSTOM has not received, nor, to the best of its knowledge, does
     there exist, any threat, demand or notice of claim from any person or
     entity asserting that ALSTOM's use of any of its Intellectual Property for
     the purposes contemplated by this Agreement constitutes any infringement,
     interference, violation, misappropriation, breach or wrongful use of the
     intellectual property rights of any other person or entity, and to the best
     of its knowledge, its Intellectual Property relating to the MCP does not
     infringe the intellectual property rights of any Third Party or any of
     ADA-ES' competitors;

     8.2.3 ALSTOM is not party to any proceeding or outstanding decree, order,
     judgment or stipulation restricting in any manner the use, transfer, or
     licensing by ALSTOM of its Intellectual Property that is subject to the
     provisions of this Agreement.

9.0 Indemnification.

9.1 In the event that either Party breaches any material term, representation,
warranty, covenant or agreement in this Agreement, the breaching Party agrees to
indemnify the other Party, its Affiliates, together with their respective
directors, officers, employees, managers, agents and advisors ("Indemnified
Parties") and hold them harmless from, against and with respect to any and all
direct and actual losses arising out of such breach of any material term,
representation, warranty, covenant or agreement.

9.2 In the event that a Party, in the exercise of the Party's granted rights
hereunder, receives a claim accusing either Party of infringing the rights of a
third party or competitor (collectively, a "Claim"), the Party receiving such
Claim shall immediately provide written notice of such Claim to the other Party.
The Party, ADA-ES or ALSTOM, as applicable, whose Intellectual Property is
subject of the Claim, upon receipt of the other Party's written notice that it
seeks indemnification therefrom, the Party whose Intellectual Property is the
subject of the Claim shall indemnify the other Party and its Indemnified Parties
with respect to such Claim or cause of action as follows: (i) the Party whose
Intellectual Property is the subject of the Claim may defend the other Party and
its Indemnified Parties against any legal action accusing infringement of such
intellectual property rights, or (ii) the Party whose Intellectual Property is
the subject of the Claim may obtain appropriate licenses for itself as well as
for the other Party under such intellectual property rights. If the Party whose
Intellectual Property is the subject of the Claim opts to defend, it shall pay
all damages or settlements and control the legal defense to such Claim,
including without limitation, attorney selection, strategy, discovery, trial,
appeal, and settlement, and the other Party shall provide all commercially
reasonable assistance requested by the Party whose Intellectual Property is the
subject of the Claim, at the latter's cost and expense (with respect to
reasonable out of pocket costs and expenses incurred by the other Party).

9.3 NOTWITHSTANDING ANYTHING TO THE CONTRARY CONTAINED HEREIN, IN NO EVENT SHALL
EITHER PARTY, ITS AFFILIATES, OR ITS REPRESENTATIVES BE LIABLE TO THE OTHER
PARTY FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING, WITHOUT
LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, LOSS OF
INFORMATION, LOST OR DIMINISHED OPPORTUNITY COSTS, OR OTHER PECUNIARY LOSS) EVEN
IN THE EVENT THE BREACHING PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.

10.0 Miscellaneous

10.1 Non-Transferable. Except as expressly provided herein, this Agreement may
not be assigned by either Party without the other Party's prior written
approval, except as part of a corporate reorganization, consolidation, merger or
sale of substantially all assets, or all stock of the assigning Party, or to an
Affiliate of the assigning Party, the assigning Party shall provide notice of
such assignment to the other Party. This Agreement shall inure to the benefit of
and be binding upon the successors and permitted assigns of the Parties.

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10.2 Binding Arbitration. Any controversy or claim arising out of or relating to
this Agreement, or the breach thereof, shall be settled by arbitration
administered by American Arbitration Association in accordance with its
Commercial Arbitration Rules including the Emergency Interim Relief Procedures,
and judgment on the award rendered by the arbitrator(s) may be entered in any
court having jurisdiction thereof. The arbitration shall have three arbitrators
and shall be conducted in Knoxville, TN. Notwithstanding the foregoing, either
Party may seek equitable relief for any breach or threatened breach of the
confidentiality provisions of this Agreement in any court of competent
jurisdiction.

10.3 Governing Laws. This Agreement shall be construed and governed in
accordance with the substantive laws of the State of Tennessee, without regard
to conflict of laws principles. Notwithstanding the foregoing Section 10.2, any
arbitration conducted in accordance therewith shall be governed by the Federal
Arbitration Act, 9 U.S.C., ss.ss. 1 et seq.

10.4 Notices. All notices under this Agreement must be in writing and
transmitted to any officer of a Party through (i) personal service, or (ii) via
certified mail, return receipt requested, addressed to the Party at the Party's
address that is set forth at the beginning of this Agreement. Notice shall be
effective upon personal service or delivery of the certified mail, as the case
may be.

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10.5 Force Majeure. A Party shall not be liable for any delay or failure to
perform its obligations under this Agreement if such delay or failure to perform
is due to any cause or condition reasonably beyond that Party's control,
including, but not limited to, delay in the other Party's performance or failure
of the other Party to perform, that results from acts of God, war, terrorism,
government intervention, riot, embargoes, acts of civil or military authorities,
earthquakes, fire, flood, accident, strikes, inability to secure transportation,
facilities, fuel, energy, labor or materials.

10.6 Unenforceability. It is intended that this Agreement shall not violate any
applicable law. If, at any time or for any reason, any provision(s) becomes
unenforceable or invalid, such provision(s) shall be amended to bring them into
legal compliance and to preserve to the maximum extent possible the intent of
the Parties and the remaining provisions shall remain unaffected and continue
with the same effect as if such unenforceable or invalid provision(s) had not
been inserted herein.

10.7 No Waiver. Failure of either Party to exercise its rights under this
Agreement shall not be construed as a waiver of that Party's rights, including
without limitation the right to seek remedies arising from past, present or
future breach by the other Party.

10.8 Counterparts. This Agreement may be executed in any number of counterparts,
each of which shall be an original, with the same effect as if the signatures
thereto and hereto were upon the same instrument.

10.9 Headings. The headings and captions in this Agreement are for convenience
purposes only, and shall not be used to construe the terms of this Agreement.

10.10 Incorporation by Reference; Entire Agreement: All of the Exhibits and
Schedules, if any, referenced herein and attached hereto are made a part of this
Agreement and are incorporated herein by this reference. This Agreement, its
Schedules and Exhibits, if any, contain the entire understanding between the
Parties with respect to the matters contained herein. This Agreement supercedes
all prior agreements between the Parties, whether oral or written, express or
implied, as to the matters contained herein. No waiver, consent, modification,
amendment or change of the terms of this Agreement shall be binding unless in
writing and signed by the Parties.

IN WITNESS WHEREOF, the Parties have executed this Agreement in duplicate on the
date first written above.

ALSTOM   Power Inc.,                        ADA-ES, LLC,
A Delaware Corporation                      A Colorado Limited Liability Company

By: /s/ Robert G. Hilton                    By: /s/ Michael D. Durham
    --------------------------------            ----------------------

Its:  Senior Vice President                 Its: President
      ------------------------------             ---------------------

                                       11EXHIBIT 10.58

                                Registration Number 1061 dated December 11, 2002

                                 ADDENDUM No. 4

  to the Contract for Exploration, Development and Production in Karakuduk Oil
             Field in Mangistau Oblast of the Republic of Kazakhstan
                                     between
        Ministry of Oil and Gas Industries of the Republic of Kazakhstan
        for and on behalf of the Government of the Republic of Kazakhstan
                                       and
        Joint Stock Company of Closed Type Karakuduk-Munay Joint Venture
        dated August 30, 1995 (hereinafter referred to as the "Contract")

                                concluded between

   the Ministry of Energy and Natural Resources of the Republic of Kazakhstan
                             (the "Competent Body")

                                       and

                    Karakudukmunay Closed Joint Stock Company
                               (the "Contractor")

                           The Republic of Kazakhstan
                                      2002

<PAGE>

This ADDENDUM No. 4 to the Contract for Exploration, Development and Production
in Karakuduk Oil Field in Mangistau Oblast, concluded on August 30, 1995 between
the Ministry of Oil and Gas Industries of the Republic of Kazakhstan for and on
behalf of the Government of the Republic of Kazakhstan and JSC of Closed Type
Karakuduk-Munay JV, has been signed on December 11, 2002 by and between the
Ministry of Energy and Natural Resources of the Republic of Kazakhstan
(hereinafter referred to as the "Competent Body"), which is authorized to
negotiate, to determine terms and conditions and to sign contracts for subsoil
utilization on behalf of the Government of the Republic of Kazakhstan, and
Karakudukmunay Closed Joint Stock Company (hereinafter referred to as the
"Contractor").

                                    PREAMBLE

WHEREAS, Clause 3) Article 9.3.1. of the Contract establishing that the
Government of the Republic of Kazakhstan expresses its absolute consent that any
amendments in the Republic Tax Legislation shall not affect the Contractor
Fiscal Liabilities, and in case of worsening the position of the Parties or
Investor as the result of the legislation amendment after signing of the
Contract or as the result of the applying provisions of international treaties
to be performed in the mandatory order, the Parties shall immediately negotiate
the correction of the affected Party or introduce relevant amendments to the
Contract for correction of the affected economic balance of the Parties and
Investor,

WHEREAS, obligations and guarantees of the Republic of Kazakhstan regarding
keeping of stability of the tax legislation for the Contractor as of the day of
the Contract signing,

WHEREAS, adoption of Law No 183-II On Amending the Law of the Republic of
Kazakhstan On Taxes and Other Mandatory Payments to the Budget dated May 3, 2001
has been adopted, which shall establish the Value Added Tax (VAT) at the rate of
sixteen percent (16%), and the Social Tax at the rate of twenty-one percent
(21%) from July 1, 2001,

WHEREAS, taking into account Clause 4-2 Article 179 of the Law On Taxes and
Other Mandatory Payments to the Budget as of the day of adoption of Law No
183-II dated May 3, 2001,

WHEREAS, taking into account Minutes No 17-11-4/I-336 of the Meeting at D. K.
Akhmetov, the First Deputy Prime Minister of the Republic of Kazakhstan,
regarding the Issues of Clarifying Several Terms and Conditions of Subsoil Use
Contracts, dated April 10, 2001,

WHEREAS, taking into account the Minutes of the Meeting of Representatives for
the Competent Body and Contractor at B. M. Yelemanov, the First Vice Minister
for Energy and Natural Resources of the Republic of Kazakhstan, dated June 27,
2001,

WHEREAS, taking into account Decree No 507 of the President of the Republic of
Kazakhstan On Reorganization, Liquidation and Creation of Specific State
Authorities of the Republic of Kazakhstan dated December 13, 2000, subject to
which functions of the Competent Body of the Government of the Republic of
Kazakhstan on the issues of subsoil use shall be transferred to the Ministry of
Energy and Natural Resources of the Republic of Kazakhstan,

NOW, THEREFORE, the Parties have agreed to amend the Contract as follows:

                                       2
<PAGE>

1.   To replace the name of the Competent Body "Ministry of Oil and Gas Industry
     of the Republic of Kazakhstan" by the "Ministry of Energy and Natural
     Resources of the Republic of Kazakhstan" throughout the Contract.

2.   To exclude words "hereinafter referred to as the "Kazakh Partners" in
     Section "Subject Matter of the Contract".

3.   To state Article 1.5 of the Contract as follows:

4.   "Contractor" - Joint Venture Karakudukmunay Closed Joint Stock Company,
     which shareholders shall be:

     o    "National Company "KazMunaiGas" Closed Joint Stock Company - 40%;

     o    Corporation "Mangistau Terra International" LLP - 10%;

     o    Central Asia Petroleum (Guernsey) Ltd. - 50%.

          "National Company "KazMunaiGas" Closed Joint Stock Company and
          Corporation "Mangistau Terra International" LLP, hereinafter referred
          to as the "Kazakhstan Partners" and/or "Kazakhstan Party".

5.   To add Article 4.2.8. of the Contract as follows:
     "The Contractor shall allocate funds for professional training of the
     experts involved under the Contract, at the amount of at least one (1)
     percent from the volume of the annual Work Program coordinated with the
     Competent Body under the Contract. In case of exceeding funds on obligation
     of training of the Kazakhstan personnel over the actual demand in training
     of the personnel involved, the Contractor shall use the remaining funds for
     financing of the priority tasks of the secondary education system in
     accordance with the Agreement on Interaction between the Ministry of
     Education and Science of the Republic of Kazakhstan and Ministry of Energy
     and Natural Resources of the Republic of Kazakhstan. Information regarding
     the remaining part of funds for the training shall be submitted to the
     Competent Body after the approval of the annual work program and budget for
     the next year of the Contract. Training may take place either in
     educational institutions, or at the workplace. Funds transferred by the
     Contractor in accordance with the Agreement on Interaction between the
     Ministry of Education and Science of the Republic of Kazakhstan and
     Ministry of Energy and Natural Resources of the Republic of Kazakhstan
     shall be reckoned as the Kazakhstan personnel training. All costs for the
     training shall be reimbursable".

6.   To add Subsection 4.2 of the Contract "Obligations of the Contractor" with
     Clause 4.2.15 as follows:

     "To accept all wells located on the Contractual Territory on the balance
     sheet".

7.   To add third Subclause Clause A) Article 9.3.1. of the Contract with the
     following sentence:

     "The Contractor shall pay VAT at the rate of sixteen percent (16%) from
     July 1, 2001".

                                       3
<PAGE>

8.   To add Subclause "Royalty" Clause B) Article 9.3.1. of the Contract as
     follows:

     "The Royalty rate shall be eight point fourteen percent (8.14 %) of the
     gross production of Crude Oil from July 1, 2001. This rate shall also apply
     for the cases of agreement concerning royalty payment in kind. The royalty
     will be based on the average weighted selling price of crude oil without
     accounting of indirect taxes and actual cost of transportation to the point
     of sale (shipping). At that average weighted price of oil will be
     determined under the following formulation:

     Clt = (BP-3th)/OP

     where:

     Clt - the average weighted price of crude oil;

     BP - the Contractor's revenue from selling crude oil within accounting
     period without indirect taxes (VAT, excise);

     3th - sum of actual expenses of the Contractor for transportation of oil to
     points of sale (without VAT, due to offset);

     OP - volume of the sold oil, in tonns>>.

9.   To state Clause D) Article 9.3.1. of the Contract as follows:

     "D) The Contractor shall make the following payments and deductions:

     o    The Contractor shall withhold income tax from Kazakhstan and foreign
          employees, according to the current legislation of the RK. The
          Contractor foreign personnel shall be obliged to pay property tax for
          individuals at the rate of zero point one percent (0.1%) in case of
          purchase of property on the territory of the RK;

     o    payments for utilization of water and forest resources and payments
          for the environment protection, according to the current legislation;

     o    from July 1, 2001, social tax at the rate of 21 (twenty one) percent
          of stuff payroll. However, from January 1, 2002, the Contractor shall
          pay the social tax for foreign engineers and managers at the rate of
          11 (eleven) percent of foreign stuff payroll;

     o    other payments to be established by state institutions when rendering
          special services provided that such payments shall be fixed on
          equitable basis for all inhabitants and/or all enterprises".

10.  To add after the second sentence of the Article 9.3.1. 3) of the Contract
     with the sentence as follows:

     In respect of this Article 9.3. "TAXES AND PAYMENTS" on all issues related
     to payment of taxes and other mandatory payments, the current legislation
     acknowledges the tax legislation valid as of the Date of entering into this
     Contract, unless otherwise is specially provided in the Contract and
     Appendices thereto".

                                       4
<PAGE>

To add Paragraph 4 Article 9.5.1. of the Contract with the following sentence:

     "Depreciation standards for the Contractor shall be determined:

A)   for the period from January 1, 1999 until January 1, 2000 - by Law of the
     RK "On Taxes and Other Mandatory Payments to the Budget" dated April 24,
     1995, in wording as of January 1, 1999;
B)   for the period from January 1, 2000 until July 1, 2001 - by Law Code of the
     RK "On Taxes and Other Mandatory Payments to the Budget" dated April 24,
     1995, in wording as of January 1, 2002;
C)   for the period from July 1, 2001 until January 1, 2002 - by Law of the RK
     "On Taxes and Other Mandatory Payments to the Budget" dated April 24, 1995,
     in wording as of July 1, 2001 in wording as of July 1, 2001;
D)   for the period from January 1, 2002 until the end of the Contract's
     duration - by the "Code of the RK On Taxes and Other Mandatory Payments to
     the Budget" (Tax Code) dated June 12, 2001, in wording as of the day of
     adoption.

11.  To add the Contract with Section 9-1 "Liquidation and Liquidation Funds" as
     follows:

"9-1.1.  For the complete financial provision of liquidation program, the
         Contractor commencing January 1, 2003 shall create the Liquidation Fund
         at the amount of USD 14,000. Money of the Liquidation Fund shall be
         entered in a special deposit account to be opened by the Contractor
         with any second level bank of the Republic of Kazakhstan. On money of
         the Liquidation Fund entered in the special deposit account penalties
         may not be imposed, and the Liquidation Fund money may not be withdrawn
         from the special deposit account by any state body on no grounds,
         including for paying off debts to the budget, payment of penalty
         provisions, except for the purposes of liquidation of the Contractor's
         activity consequences under the Contract.

9-1.2.   The Contractor shall have the right to deduct amount of the Liquidation
         Fund deductions from the aggregate annual income, as well as it shall
         be entitled to deduct amounts actually spent for the liquidation and
         restoration works during the preceding Reported Year from the aggregate
         annual income. The Contractor shall not have obligations on further
         deductions to the Liquidation Fund if the amount exceeding three
         million USD (USD 3000000) is accumulated on the Liquidation Fund
         account.

9-1.3.   Liquidation and conservation of the activity shall be carried out in
         accordance with the procedure established by the legislation of the
         Republic of Kazakhstan. Liquidation, conservation of oil, gas and other
         wells shall be made in accordance with the requirements of "Regulations
         on the Procedure of Well Conservation on Oil and Gas Fields,
         Underground Gas Storage's (UGS) and Thermal Water Reservoirs",
         "Regulations on the Procedure of Liquidation of Oil, Gas and Other
         Wells and Writing off expenses on their Construction".

9-1.4.   The liquidation program shall provide for removal or liquidation of
         constructions or equipment used in the process of the Contractor
         activity on the Contractual Territory.

9-1.5.   If actual liquidation costs exceed the Liquidation Fund amount, the
         Contractor shall carry out the additional financing of the liquidation.
         If actual liquidation costs turn out to be less than the Liquidation
         Fund amount, then surplus of the money shall be transferred to the
         Contractor and shall be subject to inclusion into the taxable income.

                                       5
<PAGE>

9-1.6.   If the State adopts decision on continuation of the operation of all or
         part of constructions transferred to it by the Contractor after the
         expiry of the Contract validity, under its responsibility, then the
         Contractor shall not bear any responsibilities on carrying out the
         liquidation program and shall transfer all rights to the actual
         accumulated assets in the Liquidation Fund to the State".

12.  To state Subclauses a) and b) of Article 11.11.1. of the Contract as
     follows:

     "a) Competent Body:

         Ministry of Energy and Natural Resources of
         the Republic of Kazakhstan
         37 Beibitshilik Ave., Astana 473000
         Republic of Kazakhstan

     b) Contractor:

         Karakudukmunay CJSC
         83, 3rd microdistrict, Aktau 466200,
         Republic of Kazakhstan

                              CONCLUSIVE PROVISIONS

The Parties hereby agree that in the result of signing this Agreement, balance
of economic interests of the Parties under the Contract underwent a change as
the result of decreasing the VAT rate to sixteen (16) percent and social tax
rate to twenty one (21) percent, is reestablished.

In this connection, the Parties declare that they have no mutual claims in
respect of the reestablished balance of economic interests.

Terms and conditions of taxation determined by the Contract and this Agreement
shall be valid invariably until the expiry of the Contract validity, except for
the cases of subsequent introduction of amendments by a separate Agreement of
the Parties to the Contract.

This Agreement has been signed on December 11, 2002 and shall enter into force
from July 1, 2001.

COMPETENT BODY
Ministry of Energy and Natural Resources of the Republic of Kazakhstan
37 Beibitshilik Ave.,
Astana 473000
Republic of Kazakhstan
         /s/ Mr. N S. Ashimov
         First Vice Minister for
         Energy and Natural Resources

 CONTRACTOR
Karakudukmunay CJSC
83, 3rd microdistrict
Aktau 466200,
Republic of Kazakhstan
         /s/ Mr. N.D. Klinchev
         General Director
and
         /s/ Mr. R.J. Moore
         Finance Director

                                       6

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