Accumulated soft sediment of the lower Ashtabula River in Ashtabula, Ohio, was contaminated with organic chemicals such as polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs), heavy metals and some low level radionuclides. The Ashtabula River Remediation, a two phase project which began in 2006 and was completed in 2008, utilized hydraulic dredging in conjunction with geotextile tube dewatering to remove, dewater and dispose of the unwanted sediment. Geotextile tube dewatering technology was very successfully applied in this project, providing an innovative, cost-effective dewatering and disposal option for heavily contaminated soft sediment.
展开▼
