Designated Investigation Agency | Soil Contamination Risks and Soil Disposal Measures During Factory Reconstruction

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Soil survey

last updated：Jun 26, 2026

ジオテック

Soil contamination risks and residual soil measures during factory reconstruction

This is a specialized soil contamination countermeasure and residual soil disposal solution focused on the rebuilding and closure of chemical and plating factories, as well as risk prevention during operations. As a designated investigation agency by the Ministry of the Environment, we conduct precise analyses based on official methods that cover specific hazardous substances used across various industries, along with rapid sampling, providing official evidence that meets legal requirements. Utilizing advanced techniques to collect soil from beneath factory floors and around narrow machine pits without halting operations, we visualize the latent leakage risks underground. This helps prevent catastrophic management troubles, such as sudden discovery of enormous purification costs or construction stoppages during future land sales or rebuilds, thereby safeguarding the healthy asset value and social credibility of companies. Our comprehensive package supports everything from voluntary investigations during operations to mandatory investigations based on regulations, and compliance evaluations for generated soil acceptance standards. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to ensure reliable safety in many construction projects.

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basic information

This is a specification for soil contamination and residual soil analysis measurements that comply with standard methods tailored to the characteristics of specific harmful substance handling factories. It addresses the analysis of the leaching and content of volatile organic compounds such as trichloroethylene and tetrachloroethylene, as well as heavy metals and hazardous items like hexavalent chromium, lead, arsenic, and total cyanide. The method employs an electric simple boring system (SCSC method) that allows for the sampling of deep soil cores over 5 meters deep from small spaces, such as indoors or under eaves of operating factories, without disturbing the building structure, using holes just a few dozen millimeters in diameter. Throughout all processes, we ensure reliable evidence without data tampering, delivering highly reliable results promptly to our customers.

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Applications/Examples of results

It will be used for the preliminary inspection of excavated soil resulting from the establishment of new production lines and the reconstruction of buildings within the factory premises, as well as for the mandatory investigation based on Article 3 of the Soil Contamination Countermeasures Act due to the abolition of facilities that use harmful substances and factory closures, and for voluntary risk assessment as part of environmental management during operations. Without halting factory operations or activities, we aim to obtain reliable environmental evidence to accurately estimate future land sales and restoration costs. This system is widely adopted by factory managers, general affairs and environmental management personnel, and management to prevent various risks in all scenarios. It is an essential system for eliminating barriers to construction progress in advance and achieving a high level of cost reduction while fully complying with regulations.