Gas leak survey or emergency callouts on natural gas grids is a very diverse and often challenging job. The areas to be searched have very different surfaces such as asphalt, gravel or grass. The path to walk can be dry and dusty, wet and muddy, or even blocked by cars and trash cans. Additionally, survey results are sometimes contradictory or difficult to analyze due to surrounding conditions. Wind gusts, swamp gas triggering false positives, gas leaks finding their way into other utility structures, like drains, are all examples of interferences that will inevitably affect the results and, in the worst case, lead to missed leaks.