landfill gas monitoring / gas monitoring / landfill gas risk assessment / landfill gas monitoring bores / landfill site / gas movement paths / chemical attack / landfill gas monitoring data / environmental auditor / site-specific monitoring network / gas accumulating / landfill gas escaping / gas movement / operational machinery / landfill gas impact / gas bores / gas monitoring bores / clay-pollutant chemical reactions / compaction equipment / landfill gas / adequate gas tight seal / /
Organization
Environmental Protection Agency / /
Person
Clay Liners / /
Position
environmental auditor / maximum permissible head / /