PASCO — The state Department of Ecology is monitoring and suppressing an underground fire at the Pasco Sanitary Landfill.
The agency says there is no immediate threat to people living near the site or to site workers.
Ecology investigated a small section of the landfill, about 25 feet in diameter, where the ground had sunk nearly two feet and wisps of smoke were coming from cracks in the soil.
Contractors used carbon monoxide detecting equipment to confirm combustion is occurring.
They are covering the depression and cracks with soil to help smother and prevent oxygen from reaching the fire.
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