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NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FROM THE PORTLAND CEMENT MANUFACTURING INDUSTRY

Cooper Environmental Services, LLC is a small business that develops and manufactures multimetals continuous emissions monitors, ambient multi-metals monitors and other related equipment. CES and its staff have been conducting research in this field for over 40 years. In addition to any formal response published in the Federal Register, it is requested that the EPA respond directly to the authors of these comments, at their earliest convenience. Direct correspondence to: John A. Cooper, jacooper@cooperenvironmental.com, 503-624-5750