[First Hit]

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Figure 1. Soil vapor data collected on a 110 foot grid spacing from a depth of four feet below surface illustrates the size and shape of two very large Previous HitmagnitudeNext Hit methane seep. Methane magnitudes range from ambient air levels upwards of 89 percent. Actual gas bubbles have been visibly documented when the areas containing the larger Previous HitmagnitudeTop concentrations are flooded.