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31 21 0.017 GA-5000 0.89 10:46 AM 10:49 AM 71 0.0 0.0 18.8 0.9 80.3 N/A N/A total purge volume and time <br /> 3D 26 0.1875 0.005 GA-5000 0.0194 0.26 upper segment <br /> 3D 2.5 1.0000 0.014 GA-5000 0.0194 0.70 lower segment <br /> 3D 28.5 0.019 GA-5000 0.96 10:49 AM 10:52 AM 71 0.0 0.0 20.8 0.0 79.2 N/A N/A total purge volume and time <br /> Notes: <br /> (1)Yellow highlighted columns are calculated from non-highlighted inputted data. <br /> (2) Purge time: to determine seconds, multiply the number after decimal by 60. For example, for 1.2 minutes, multiply 0.2 by 60 = 12. Total purge time then is 1 minute, 12 seconds. <br /> (3) Start Time: Record time when meter is turned on to purge. <br /> (4) End Time: Record time when final measurements are taken. <br /> (5) Initial CH4 is the highest reading exhibited anytime during the purge window. <br /> 8/18/2026 amc <br />