| Soil and groundwater remediation;Ex-situ;Soil washing;Physical seperation | Unit process, single operation | KR | Unit processes / Other Services / Repair and maintenance | 2023 | | |
| Air stripping unit ; Groundwater pump and treatment | Unit process, single operation | UM | Unit processes / Other Services / Repair and maintenance | 2009 | | |
| Cable manufacture ; a total of 67.2 km submarine cable. | Unit process, single operation | SH-CN | Unit processes / Systems / Electrics and electronics | 2009 | | |
| Caisson-based gate ; 2.4 m diameter ; In-situ groundwater remediation ; PRB ; Funnel-and-gate configuration PRB | Unit process, single operation | US | Unit processes / Other Services / Repair and maintenance | 2011 | | |
| Caisson-based gate ; 2.4 m diameter caisson ; 1.2 m × 1.2 m column of ZVI ; In-situ groundwater remediation ; PRB ; Funnel-and-gate configuration PRB | Unit process, single operation | UM | Unit processes / Other Services / Repair and maintenance | 2009 | | |
| Catalytic oxidation unit ; Groundwater pump and treatment | Unit process, single operation | UM | Unit processes / Other Services / Repair and maintenance | 2009 | | |
| Cement slurry barrier ; Soil Risk Control ; Vertical Barrier ; Cement jet grout | Unit process, single operation | US | Unit processes / Other Services / Repair and maintenance | 2013 | | |
| Excavation soil ; 3~10 m ; Soil ex-situ remediation ; Excavation and transportation ; Including enclosed shed construction | Unit process, black box | ZB-SD-CN | Unit processes / Other Services / Repair and maintenance | 2024 | | |
| Exhaust gases treated ; Soil ex-situ remediation ; Chemical Oxidation ; Secondary pollution disposal ; Treatment of wastewater and exhaust gas | Unit process, black box | ZB-SD-CN | Unit processes / Other Services / Repair and maintenance | 2024 | | |
| Extraction well ; Groundwater pump and treatment | Unit process, single operation | UM | Unit processes / Other Services / Repair and maintenance | 2009 | | |
