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<http://schema.org/text>
"<ul><li>Gas Leak Detection If you are smelling gas and notice some discoloration in the surrounding vegetation, this may be an indication of an underground gas leak. Our technicians use a Flame Ionization Detector (FID), which is an instrument that detects and measures organic compounds. </li></ul>"
<https://oilandgasguru.com/underground-gas-pipeline-leak-detection>