Shallow well and conduit/collector grid

A collection grid of shallow gas wells for use at landfills and the like of the type having a gas-producing waste pile, the shallow gas wells being connected to one another in fluid communication and each comprising:

• a lower geocomposite positioned over the gas-producing waste pile;
• a protective layer of soil positioned over the lower geocomposite;
• an upper geocomposite positioned over the protective layer of soil such that the protective layer of soil is positioned between the lower and upper geocomposites;
• an impermeable geomembrane positioned over the upper geocomposite;
• and
• a shallow gas well collector positioned within the protective layer of soil and comprising:
• a non-perforated outer pipe extending generally from the lower geocomposite toward the upper geocomposite;
• a perforated inner pipe positioned within and extending within the non-perforated outer pipe and together with the non-perforated outer pipe defining a space between the two pipes;
• a quantity of gravel-like material positioned within the space between the perforated inner pipe and the non-perforated outer pipe;
• and
• a transport conduit extending beneath the geomembrane and not extending through the membrane for transporting gas produced by the waste pile and collected through the gravel-like material and into and through the perforated inner pipe of the shallow gas well collector.