Coal Ash Services can provide dewatered ash disposal services, including:
- Dewatering ash in place in your CCP landfill, or
- Hauling dewatered ash to an appropriately licensed landfill off site
We have extensive experience utilizing geotextile tubes to dewater material in landfill cells, and have successfully processed more than 900,000 cubic yards of dredged material using this method. A lined dewatering area is prepared in the landfill cell, and water released from the tubes to be collected and treated, as needed. When active dewatering operations are completed, prior to capping, the dewatering area liner is pierced, allowing any remaining water to flow to the landfill’s existing leachate collection system.
Off Site Disposal
On projects where in-landfill dewatering is not an operation, or the space available for dewatering is limited, we have developed a technique of rotational haul-out. In this scenario, geotextile tubes are deployed and filled in a row. As tubes are being filled at one end of the dewatering pad, the tubes at the opposite end are being excavated and hauled away for disposal. This technique of rotating the pad provides an opportunity for utilizing geotextile tube dewatering for projects with limited space or time frame available for dewatering operations. On past projects, we have dewatered up to 126,000 cubic yards in a dewatering pad with only 15,000 cubic yards of capacity, by using this rotational haul-out method.