"Fugitive gas" refers to gas that has escaped or leaked from its intended location. It can either be a natural gas that has escaped from underground deposits or a man-made gas that has leaked from pipes or containers. Full definition
Fuel Substitution: The oil and natural gas industry has spent nearly $ 25 billion developing substitute and less carbon intensive fuels, such as liquefied natural gas and reducing fugitive gas emissions. (whoownsbigoil.com)
The paper, Noble gases identify the mechanisms of fugitive gas contamination in drinking - water wells overlying the Marcellus and Barnett Shales, was published in the Proceedings of the National Academy of Sciences (PNAS) (treehugger.com)
Indeed, we did not even remove the few cases of known fugitive gas releases in our study to be conservative in our approach. (nystateofpolitics.com)