The potential comes directly from the emission of CH4 from MSW degradation. Since there is no gas collection and flaring system at the Phuket landfill at present and with the assumption of 10% methane oxidation in landfill cover, 90% of the methane produced is released into the atmosphere.The potential comes directly from the emission of CH4 from MSW degradation. Since there is no gas collection and flaring system at the Phuket landfill at present and with the assumption of 10% methane oxidation in landfill cover, 90% of the methane produced is released into the atmosphere.