SUBSURFACE LANDFILL FIRE SUPPRESSION AND MONITORING
                        A Case Study at the Campbell Mountain Landfill, Penticton, British Columbia

Initial Gas Monitoring Results.
The presence of carbon monoxide (CO) at concentrations greater than a few parts per million (ppm) usually indicates refuse combustion (Marshall). Gas monitoring was therefore carried out periodically during the drilling program, after the installation of the standpipes, and at the time the Thermistors were installed.

The monitoring was performed using a PhD Plus portable gas analyzer. Although the analyzer is capable of sampling four compounds at once (methane, oxygen, carbon monoxide and hydrogen sulphide), a complete and accurate set of gas readings could not be completed due to the continuous overloading of the gas detector by methane. The focus was therefore placed on obtaining accurate carbon monoxide measurements. The CO concentrations measured in the wells drilled over the North Ravine are listed in Table3. 

The initial carbon monoxide concentrations measured in GMW98-2A, GMW98-3A/B and GMW98-6A/B indicated the presence of a refuse fire. The initial CO concentrations measured in GMW98-1A are indicative of standard CO levels found in landfill gas.

                         
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