How would you design a landfill gas collection and utilization system?

Design involves: gas generation estimation using first-order decay model (Lo = 100-200 m3/tonne waste, k = 0.02-0.05/year), peak generation timing (5-7 years after placement). Collection system: vertical extraction wells (15-30m spacing) or horizontal collectors, HDPE header pipes, blowers/compressors. Gas quality monitoring for methane (45-60%), CO2, and trace compounds. Utilization options: flaring (minimum for odor/GHG control), boiler fuel, gas engine generation (3-5 MWh/1000 m3), or grid injection after upgrading. Include condensate management and monitoring wells.