The City explained it would build the landfill with a double-liner system, using the same material that protects against leakage at current landfills. “The existing Waimanalo Gulch landfill has ...

“We have a single liner system currently at our Waimanalo Gulch landfill, which has been open for 35 years,” said Mike O’Keefe, DES deputy director. “We have not had a leak through that ...

Environmentalists: Water draining from beneath a lined landfill containing coal ash is nevertheless contaminated and threatens the Des Moines River ...