 The landfill was built with plastic liners, a clay cap, and PVC pipes which allowed for methane and toxic gas to be released from the landfill.Although state officials told citizens they planned to build the landfill with a perforated pipe leachate collection system under the landfill, a system critical to a functioning "dry-tomb" landfill, no such leachate collection system was ever installed.The nearly 1 million gallons of water that was capped in the "dry-tomb" landfill could not be pumped out, and citizens later learned from state rainfall and landfill monitoring data that tens of thousands of gallons of water had been entering and exiting the landfill for years.