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BUR Austin Road, and the ongoing installation activities associated with the new landfill gas extraction system at the site. Based on the data presented above, Allied proposes continuing with the routine monitoring activities on a quarterly basis and re-evaluating the locations of the current soil gas monitoring network once the landfill gas extraction system installation and the Littlejohns Creek relocation projects have been completed. Procedures Concentrations of methane, oxygen, and carbon dioxide were monitored at all eight of Austin Road Landfill's existing soil gas probes using a calibrated Landtec GEM 2000 gas analyzer and extraction monitor (GEM). The GEM was certified as calibrated to factory specifications by the rental supplier, EquipCo, prior to the sampling event. At each probe, a reading of ambient air in the vicinity of the probe being tested was recorded before soil gas was monitored within the probe. Initially, the GEM was attached to the soil gas probe, the valve was opened, and the initial soil gas probe pressure was monitored and recorded. Then the GEM's internal pump was activated to extract soil gas from the probe. Readings for methane, oxygen, and carbon dioxide were monitored until the readings stabilized. After the readings were recorded, the internal pump was deactivated and the post reading soil gas probe pressure was monitored and recorded. The soil gas probe valve was then closed, and the GEM was disconnected. Results As shown in Table 1, methane was detected above its LEL in SGP-2A at a concentration of 13.3 percent by volume. The GEM displayed 0.3 percent by volume for methane at SGP-3B and 0.1 percent by volume at probe SGP-7A. Methane was not detected at any other Austin Road Landfill soil gas probe during the November 13, 2002 monitoring event. Oxygen readings in soil gas probes ranged from 2.8 percent by volume in SGP-2A to 19.6 percent by volume in SGP-5A. Carbon dioxide readings ranged from 1.3 percent by volume in SGP-7A to 3.8 percent by volume in SGP-13. The relative air pressure of the probes ranged from -0.1 to 0.0 inches of water, indicating that the pressure within the soil gas probes is at or near equilibrium with atmospheric pressure.