CH2M Hill and ADA Technologies, Inc., to commercialize technology to control power plant mercury emissions

DENVER, Colo., June 17, 2003 — CH2M HILL and ADA Technologies, Inc., on Tuesday announced they have formed a company, Amended Silicates, LLC, to commercialize an advanced sorbent technology to control mercury emissions from coal-burning power plants.

Amended Silicatesà¢â€ž- sorbent is a cost-effective, new technology based on a low-cost silicate material, similar to sand or clay, which is impregnated with chemicals that attract mercury and mercury compounds. Sorbents are solid materials that have special chemical properties. For emissions control applications, sorbents can be injected into the combustion flue gas of coal-burning power plants to remove pollutants.

“Colorado’s businesses are the lifeline of our economy, and with the highest concentration of high-tech workers in the nation, Colorado’s tech industry is poised for even further growth,” said Governor Bill Owens. “Already Colorado ranks fourth in attracting Small Business Innovation Research (SBIR) grants. It’s always rewarding to see some of this grant money put to use in a partnership between two Colorado companies which in this case will develop a technology that will help our environment by curbing mercury emissions.”

“We are excited about the outlook for commercializing this highly promising, advanced technology to help utilities meet the pending mercury emissions regulations,” said Ralph Peterson, CH2M HILL chairman, president and CEO. “CH2M HILL is prepared to commit substantial resources to take this technology to the marketplace — well beyond the $2 million initial commitment we have formally agreed to. As we move toward full-scale production, Amended Silicatesà¢â€ž- sorbent is proving to be a reliable and cost-effective technology — two issues of great importance to the power industry.”

Because of the potential health effects of mercury contamination to lakes and rivers, the U.S. Environmental Protection Agency announced a rulemaking in December 2000 that mandated the control of mercury emissions from coal-burning power plants in the United States by 2007. In addition, some states have earlier and more stringent deadlines.

“This represents an advancement on proven technology,” said Cliff Brown, president of ADA Technologies and co-managing director of Amended Silicates, LLC. “Amended Silicatesà¢â€ž- sorbent — an alternative to other sorbents, such as activated carbon — reduced mercury emissions by up to 96 percent in testing at Xcel Energy’s Comanche Station Unit 2 power plant in Pueblo.”

Amended Silicatesà¢â€ž- sorbent provides superior mercury control and enables resource conservation, since it is fully compatible with market uses of fly ash (the fine residue created by burning coal, which is removed by the plant’s air pollution control systems). In contrast, fly ash containing even small quantities of carbon-based sorbent cannot be used for concrete production and must be disposed of in landfills.

CH2M HILL is ranked by Engineering News-Record as the third largest environmental firm in the United States and had total revenues of $2.43 billion in 2002. Founded in 1946, the Denver-based firm is entirely employee-owned, with more than 10,000 employees worldwide providing engineering, construction, operations, and related technical services. CH2M HILL is a leader in identifying, developing, and evaluating new technologies and incorporating them into practical applications. The firm’s full-service capability includes environmental, energy, power, water, transportation, communications, and industrial facilities.

ADA Technologies, Inc., founded in 1985, specializes in the successful creation and conversion of innovative technologies to commercial successes. The Littleton, Colo.-based firm maintains a strong focus on commercialization of technology through licensing, sales, joint ventures, and business manufacturing. ADA has conducted an extensive program to develop new technologies for the removal (or stabilization) of trace levels of mercury from gas, liquid and solid waste streams for the past 10 years, with more than $9 million in funding from the Department of Energy, the EPA, and DOE’s national laboratories.

For more information on Amended Silicates, LLC, and the Amended Silicatesà¢â€ž- technology, please visit our website : www.amendedsilicates.com.

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