Prevention of Environmental Pollution

In the construction business, we face various environmental issues such as soil contaminated with heavy metals and chemical substances, dioxin problems at incineration facilities, and water pollution. We are actively working to implement countermeasures and develop technologies to tackle these issues.

Soil Contamination Countermeasures

Since the enactment of the Soil Contamination Countermeasures Act in 2003, revisions have been made to expand investigative initiatives and to tighten regulations, and new systems have been introduced to manage contamination in waterfront areas and natural and reclaimed land. We are committed to providing comprehensive solutions from investigation to countermeasures, including social responses such as compliance with relevant laws and coordination among stakeholders as well as the development of construction technologies that take the surrounding environment into consideration. We also have extensive experience in treating contaminated soil containing heavy metals and VOCs (volatile organic compounds).

Dioxin Countermeasures

We started focusing on the toxicity of dioxins at an early stage and have been working on the development of dioxin remediation technologies. In 2000, we became the first company in Japan to dismantle an incineration facility with dioxin exposure prevention measures, and since then, we have dismantled more than 80 incineration facilities, while properly managing and disposing the waste and contaminated soil generated in the course of the dismantling.

Initiatives for Preventing Water Pollution, Controlling Dust Emissions, etc.

We are making efforts to mitigate environmental impact during marine construction activities such as dredging and sediment placement, including measures to prevent turbidity. In addition to installing membranes and frames to prevent turbidity, we are developing environmentally friendly construction technologies, such as suppressing turbidity during dredging using a closed-type clamshell bucket (END method) and controlling turbidity during underwater sediment placement using tremie pipe for viscous materials.

Dust Control

In demolition and removal work, we check wind speed and direction, sprinkle water to suppress dust generation, and perform construction with consideration for the surrounding environment.