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"The Internet's Largest Reference Site For Source Emissions Testing, Services & Products"
U.S. EPA Clean Air Excellence Award Winning Site.
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Air Pollution Sampling, Firms, Testing, Consultants. Locate Stack Testing Firms in the United States and Canda.
ActiveSET.org is the largest stack testing reference source on the Internet and the most visited - with thousands of U.S. and international
visitors. The Active National Directory of Source Emissions Testing supports a state-by-state listing of air quality testing firms
located in the US & Canada. Industrial facility owners & managers can submit a FREE RFP and research or "shop" for stack testing
firms prior to requesting bids. Regulatory agencies & consulting engineers recommend this site & maintain contact lists. Stack
testing firms in need of equipment and services, searching for new clients or looking at the competition visit frequently.