Designated Investigation Agency | Independent Comprehensive Investigation to Protect Corporate Social Credibility | Geotech

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Soil contamination survey

last updated：Jul 16, 2026

ジオテック

Protecting corporate social credibility and compliance! Total support from usage history investigation to high-precision soil gas analysis and accurate contamination range determination.

In today's rapidly increasing importance of corporate social responsibility and ESG management, properly managing the risk of soil contamination that may exist beneath company-owned land is a crucial mission that forms the foundation of corporate governance. This comprehensive survey is a voluntary environmental risk management service that goes beyond legal obligations to firmly protect a company's social credibility. In Phase 1, the utilization history investigation meticulously examines not only the registry and administrative maps but also the history of past operational performance and changes in facility layout, using a specialized approach to reliably extract hidden risk areas. The subsequent Phase 2 overview investigation employs smart sampling methods that do not interfere with ongoing operations, quickly conducting high-precision soil gas analysis as a countermeasure against specified hazardous substances, scientifically quantifying the safety of the subsurface. Furthermore, if contamination is detected, Phase 3 involves detailed boring to accurately determine the extent of contamination and appropriately assess future environmental liabilities. The rigorous reports from designated investigation agencies will solidify the company's reliability.

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basic information

This comprehensive survey fully complies with the Ministry of the Environment's Soil Contamination Countermeasures Act guidelines and features advanced technical specifications that align with corporate internal audits and global standards. In Phase 1, the historical investigation involves a thorough examination of factory history documents, including public records and specific facility installation notification forms. In Phase 2, the overview survey includes high-precision soil gas analysis for rapid measurement of volatile organic compounds such as tetrachloroethylene, with reliable sampling conducted using dedicated collection tubes. The analysis is performed by a specialized institution registered under the Measurement Law, accurately calculating the leaching and content levels of each hazardous substance. In Phase 3, the detailed investigation involves depth-specific soil sampling through additional drilling, accurately determining the three-dimensional extent of contamination and delivering highly reliable mapping data.

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It is ideal for including environmental risk descriptions in integrated reports of listed and global companies, conducting asset risk inventories of company-owned land in the operation of ISO 14001, obtaining governance evidence for ESG investments, and confirming the soundness of land assets during family succession or internal restructuring. By proactively advancing steps from usage history investigation to soil gas analysis and determining the extent of contamination before legal obligations arise, it completely avoids the loss of corporate brand and social trust due to unexpected contamination discoveries. It is widely used as a strong objective proof of environmental compliance for all stakeholders, including shareholders, business partners, and neighboring residents.