The Hazardous Waste Clean-Up Information (CLU-IN)

Remote sensing of emissions: new technologies and recent work

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The Second International Workshop on Remote Sensing of Emissions: New Technologies and Recent Work was held April 1-3, 2008. The workshop was sponsored by the U.S. Environmental Protection Agency's (EPA) Office of Air Quality Planning and Standards at Research Triangle Park (RTP), Office of Research and Development (RTP), and Office of Solid Waste and Emergency Response (HQ). At the workshop, studies involving the use of differential absorption light detection and ranging systems (DIAL), solar occultation flux (SOF), and Fourier transform infrared spectroscopy (FTIR) techniques at petroleum related facilities in the Houston, TX area and open path techniques for use at other types of facilities were discussed. The sponsors organized this second International workshop for the purpose of (1) summarizing the capabilities of open path technologies and relating them to estimation methods now in use, (2) exploring current applications of open path technologies, and (3) evaluating the ways and means for expanding the use of these technologies in evaluating and reducing fugitive emissions.

Attendees included state and local representatives of air quality agencies; EPA regional, headquarters, and laboratory personnel; Canadian and European air quality experts; and equipment vendors and contractors.

Technology Descriptions
The specific technologies discussed at the workshop were DIAL; radial plume mapping (RPM) and vertical radial plume mapping (VRPM) methods using open path Fourier transform infrared (OP-FTIR) systems, differential optical absorption spectroscopy (DOAS), and tunable diode lasers (TDL); SOF; infrared sensing video cameras; and advances in quantum cascade lasers and how they might affect equipment using laser technology.

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