ADA-ES and ALSTOM form partnership to provide systems for mercury control

LITTLETON, Colo., Dec. 4, 2002 — Earth Sciences Inc. announced that its wholly-owned subsidiary, ADA Environmental Solutions, LLC (ADA-ES) and ALSTOM Environmental Control Systems have entered into an exclusive relationship to market systems for mercury removal from power plants and other facilities.

In response to pending State and Federal legislation for mercury emission control, ALSTOM and ADA-ES will provide overall turnkey solutions for mercury control including guaranteed performance.

Such solutions may include all equipment required including carbon storage and injection equipment, particulate collection equipment or redesign/rebuild/conversion of existing equipment, monitoring equipment, and even guaranteed supply of powdered activated carbon (PAC).

The partnership will focus on providing the required equipment and modifications to achieve up to 90% removal of mercury meeting all applicable standards. The partnership will combine ADA-ES’ leading technology position in PAC based mercury removal, acquired through years of development including Department of Energy sponsored projects, with ALSTOM’s technology in particulate collection (Electrostatic Precipitators and Fabric Filters) and ALSTOM’s experience in mercury removal in the waste to energy business.

Philippe Cochet, Managing Director of ALSTOM’s Global Environmental Control Systems business comments: “This business relationship combines a technology leader in PAC utilization and supply with ALSTOM’s leadership position in the technology of particulate collection. Together we can provide the power industry and others with the most economical, integrated systems to meet the pending regulatory requirements. Our focus is to integrate the mercury capture through utilization of integrated pollution control devices that minimize the impact on the generator.”

Mike Durham, CEO of ADA-ES comments: “We are pleased to be part of a partnership that allows us to utilize our technology and carbon supply resources with ALSTOM’s global reach and size. The full-scale experience we’ve gained through several DOE sponsored projects gives us an outstanding position to meet the growing market. This combination affords a unique opportunity to provide total mercury capture solutions that are efficient, reliable, and guaranteed.”

ALSTOM is the world leader in the air pollution control arena, with environmental equipment installed on over 200,000 MW of power plants. ALSTOM also serves the air pollution control needs of the petrochemical and refining industries as well as other basic industries such as iron & steel, nonferrous metals, pulp & paper, cement, aluminum, and glass.

Headquartered in Littleton, Colo., ADA-ES is an environmental technology and specialty chemical company that brings 25 years of experience to improve responsible profitability for electric power and industrial companies through proprietary products and systems that mitigate environmental impact while reducing operating costs. ADA-ES can be reached by e-mail at .

ADA-ES is a subsidiary of Earth Sciences, whose common stock trades on the OTCBB under the symbol ESCI.

ALSTOM is the global specialist in energy and transport infrastructure. The company serves the energy market through its activities in the fields of power generation, power transmission and distribution and the transport market through its activities in rail and marine. ALSTOM has annual sales in excess of 22 billion euros and employs 112,000 people in over 70 countries. The company is listed on the Paris, London and New York stock exchanges.

Source: Earth Sciences, Inc.

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