1. IR Camera (HAWK/GasFindIR) VOC leaks appear as dark clouds (colors can be reversed). The IR Camera is an excellent and relatively inexpensive tool for finding leaking organic gases, however it cannot quantify the emission rate. IR Camera Alex Cuclis Houston Advanced Research Center

2. 1/2 mile Differential Absorption LIDAR (DIAL) DIAL does not require mirrors. Laser light reflects off of particles in the air and returns to the detector. DIAL quantifies emissions with wind speed and a vertical concentration map. DIAL Alex Cuclis Houston Advanced Research Center Note that many emissions are far above ground level.

3. Solar Occultation Flux (SOF) Texas City Industrial Complex SOF uses the sun as its light source to a mobile FTIR detector mounted in a van. SOF Alex Cuclis Houston Advanced Research Center

4. Texas City Industrial Complex SOF “Box” Solar Occultation Flux (SOF) SOF uses the sun as its light source to a mobile FTIR detector mounted in a van. SOF quantifies emissions with wind speed and a material balance around the “SOF Box”. SOF Alex Cuclis Houston Advanced Research Center