Coal ash. Itâs a burden that has been decades in the making, but has only recently been dealt with by the utility plants it has fueled. Now some local residents are worried that it might end up in a landfill near them, even though the landfillâs developers have repeatedly said they would not accept coal ash. Solid Solutions Development, the company proposing the Haralson County landfill, has said that it will not accept out-of-state waste in general and will not accept coal ash or sewer sludge at all. Those conditions will be written into the agreement with the community, said Tee Stribling, one of the founders of the firm. That cannot be changed, he said. It will be written into the application for the permit and it will be written into the zoning.