The CleanAIR PERMIT™ Filter Receives Verification for Level 3 Plus from California Air Resources Board

Santa Fe, NM – October 21, 2008 – CleanAIR Systems, Inc., manufacturer of emissions control technology for diesel and natural gas engines, was granted Level 3 Plus Verification on October 7th by the California Air Resource Board (ARB) for the company’s PERMIT™ Filter. The designation of “Plus” added to the original product verification certifies that the PERMIT™ Filter does not increase nitrogen dioxide (NO2) emissions beyond the 2009 limit of 20% over the baseline for stationary engines.

Originally verified five years ago, the PERMIT™ Filter reduces emissions of diesel particulate matter by greater than 85 percent for prime and emergency generators. According to dated ARB Executive Orders, CleanAIR’s PERMIT™ Filter was the first diesel particulate filter to comply with stringent Air Resources Board requirements, receiving Level 3 Verification on June 6th of 2003 and becoming the earliest technology to ensure real emission reductions by ARB standards and guarantee a durable emissions control system, compatible with various engines and applications.

The newly awarded “Plus” extends CleanAIR’s verification to meet the following ARB amendment:
“As of January 1, 2009, all verified diesel retrofits sold and installed must comply with the 2009 nitrogen dioxide (NO2) emissions limit as defined in the Verification Procedure. Warranty and In-Use Compliance Requirements for In-Use Strategies to Control Emissions from Diesel Engines, title 13, California Code of Regulations, sections 2700-2710.”

Exposure to nitrogen dioxide can cause serious health issues such as acute lung injury. Unfortunately, many diesel particulate filters on the market today actually increase NO2 while in use. With this in mind, ARB is attempting to limit NO2 emissions with the current ruling and will withdraw verification at the beginning of 2009 if a technology does not meet the specified limit.

For complete verification information on the PERMIT™ diesel particulate filter and engine operating criteria, Executive Orders and Attachments can be found on the CleanAIR website at: http://www.cleanairsys.com/about/carb-verification.htm.

Founded in 1993, CleanAIR Systems has developed and brought to market eleven new technologies to the field of air pollution control, including the company’s proprietary PERMIT™ diesel particulate filter characterized by a non-washcoat catalyst. CleanAIR has sales representatives in the United States, Sweden, Chile, Mexico, Taiwan and Puerto Rico. This past June, Caterpillar, the world’s leading manufacturer of construction and mining equipment, selected CleanAIR Systems as CAT’s strategic alliance partner of choice for emissions control products, supplying retrofit technology for Caterpillar prime and back-up generators.

To read more about CleanAIR Systems, visit http://www.cleanairsys.com/.