b'Honolulu Mayor Rick Blangiardi proposed creating a new 150-acre landll in Wahiawa on top ofan aquifer. Board of Water Supply chief engineer and manager Ernie Lau opposed the plan.Landlls contain contaminants that can enter ground water if it leaks out of the landll and that leachate is pretty contaminated, said Lau.Despite strong opposition to the landll site, city leaders insist it can be built safely over the aquifer. We believe when we reduce what goes into the landll, and then we have better systems that protect the substrate, soils and aquifer that we can safely operate a landll over the aquifer, said Mike Formby, city managing director.Senate Bill 438, introduced by Wahiaw Sen. Donovan Dela Cruz, would establish regulations on where waste disposal facilities can and cant be built. While those proposed regulations have uctuated as lawmakers amend the draft bill, it originally stated that such facilities cannot be built near or above a signicant aquifer. 6'