When landfill is full,layers of soil and clay seal in trash Electricity Methane generator building storage and compressor Leachate building treatment system Pipes collect Methane gas explosive methane recovery for use as fuel well to generate electricity Leachate storage tank Compacted solid waste Garbage Leachate Groundwater Leachate pumped pipes monitoring up to storage tank well for safe disposal nthetic Groundwater Leachate Clay and plastic lining to monitoring prevent leaks;pipes collect leachate well Subsoil from bottom of landfill Fig.16-11,p.421Fig. 16-11, p. 421 When landfill is full, layers of soil and clay seal in trash Topsoil Sand Electricity generator building Clay Garbage Methane storage and compressor building Leachate treatment system Probes to detect methane leaks Pipes collect explosive methane for use as fuel to generate electricity Methane gas recovery well Leachate storage tank Compacted solid waste Garbage Leachate pipes Leachate pumped up to storage tank for safe disposal Groundwater monitoring well Synthetic liner Leachate monitoring well Sand Groundwater Clay Clay and plastic lining to prevent leaks; pipes collect leachate Subsoil from bottom of landfill Sand