The video shows vented gas as seen through an infrared camera, which appears to be smoke, billowing from the top of cylindrical metal oil storage tanks and from a pneumatic valve. The video also shows the tanks as seen...

The video shows vented gas as seen through an infrared camera, which appears to be smoke, billowing from the top of cylindrical metal oil storage tanks and from a pneumatic valve. The video also shows the tanks as seen through the naked eye where the gas is invisible. Video clips were courtesy of EPA and a private emission detection firm.