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The Active National Directory Of Source Emissions Testing
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Links to air permits issued, proposed, or currently under review. Search by state or EPA Region. A great tool for networking and marketing.
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A listing of registered PE's by state that prepare and sign air permit applications. Is this you?
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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.
Copyright © 2000  All Rights Reserved. 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.