Suchat Naknok, president of the Praksa anti-Landfill Network, led 12 Praksa residents to submit a formal request to NCPO chief Prayuth Chan-ocha at Government House.
Mr Suchart said since the eruption of three fires at the Praksa landfill between March and May this year many people who lived near the site had developed health problems caused by the combustion of hazardous chemicals and other industrial waste dumped in the landfill.
When residents filed complaints to state agencies, he said, authorities forwarded the issue to the private sector which manages the Praksa garbage dump, leaving the problems unsolved.
The Administrative Court had ordered seven state agencies to draw up a joint operation plan to clean up the Praksa landfill and ensure environmental safety and human health for communities around the area.
But not much progress had been made so far, Mr Suchat said. He asked NCPO to move quickly to find solutions to the problem and return happiness to the Praksa communities.