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6.6.2.3.2 Gas Ratios
Balance/ O
2
• Results near “4” indicate a direct air leak into the sample train, sample fitting or wellhead.
• User should be familiar with interpreting the range of ratios for Balance/ O
2
. Information is
available within the SWANA Landfill Gas O&M Manual available at www.swana.org.
CH
4
/ CO
2
• Ratio lower than 1.1 may indicate potential for stressed conditions on a landfill gas well.
• The ratio may assist in drawing attention to different phases of landfill gas production.
• User should be familiar with interpreting the range of ratios for CH
4
/ CO
2
. Information is available
within the SWANA Landfill Gas O&M Manual available at www.swana.org.
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