CleanAIR Systems, Inc. Awarded Contract to Retrofit City of Seattle Vehicles with Emission Control Systems

Santa Fe, NM- July 15, 2002 - CleanAIR Systems, Inc. has received a contract with the City of Seattle to retrofit more than 100 city-owned vehicles with its ASSURE™ diesel oxidation converter (DOC). The contract requires the retrofit of various types of work vehicles, including street sweepers, vactor trucks, dump trucks, and utility trucks, with CleanAIR's ASSURE™ DOC, which reduces diesel particulate matter, carbon monoxide and hydrocarbon emissions. Seattle-based Western Peterbilt, Inc. will perform the installation of the replacement mufflers.

"CleanAIR Systems is pleased to join forces with the City of Seattle and Western Peterbilt to help improve the air quality in the communities of Seattle," said CleanAIR Systems President Michael Roach. "This retrofit project indicates a major commitment toward creating a cleaner environment in and around Seattle in significant, measurable ways."

The City of Seattle is retrofitting its diesel vehicles as part of the region's Diesel Solutions Program, and as an initiative of its Environmental Action Agenda, launched by Mayor Greg Nickels in April, which aims to reduce diesel emissions from city vehicles by 50 to 90 percent. Last year, city-owned vehicles burned 818,773 gallons of diesel fuel.

According to the U.S. Environmental Protection Agency, and confirmed by Puget Sound Clean Air Agency monitoring, levels of toxic air pollution in the region are among the highest in the country, due in large part to diesel emissions from trucks, buses and ships. By implementing initiatives such as continued retrofitting of diesel vehicles and converting to ultra-low sulfur diesel fuel, the city hopes to reduce toxic air pollution substantially by 2005.