Soil Contamination Survey for the Chemical Industry

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Soil contamination survey

last updated：Sep 07, 2026

ジオテック

High-precision contamination investigation to accurately control soil risks in chemical plants.

In chemical plant sites and former sites, a wide variety of chemical substances are manufactured and used, making it essential to objectively understand the risk of soil contamination as a key to smooth business operations. Conducting early soil contamination investigations (historical surveys and soil condition surveys) during factory reconstruction, land sales, or ongoing operations directly relates to the proper assessment of future asset value and compliance with legal regulations. By identifying and quantifying contamination risks in advance from a neutral technical perspective, it is possible to prevent unexpected troubles and costs during transactions or construction, allowing for the formulation of rational budgets and business plans. Additionally, early detection during operations enables planned management and measures that minimize impacts on the surrounding area, providing significant benefits in maintaining and protecting the company's social credibility and a healthy operating environment over the long term.

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basic information

Our soil contamination investigation will be conducted with reliable and transparent technical specifications as a "designated investigation agency" based on the Soil Contamination Countermeasures Act. The investigation consists of two steps: first, in the "historical investigation (Phase 1)," we comprehensively collect and scrutinize objective information such as residential maps, land registries, and public documents to narrow down the handling and storage areas of chemical substances from the past to the present, as well as the potential areas of contamination. Based on these results, we will transition to the "soil condition investigation (Phase 2)," where we will sample and analyze actual on-site soil and gas to scientifically identify the presence or absence of contamination. By establishing a standard sampling system in accordance with laws and environmental ministry ordinances, we can accurately grasp the contamination status not only at the surface but also in depth. In the event that contamination is confirmed, we will quantitatively determine its extent, enabling the calculation of appropriate remediation costs and the formulation of reasonable land use plans.

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Applications/Examples of results

■ Specific Procedures 1. Inquiry and Planning Design: Confirm the factory's future plans (reconstruction, sale, continued operation) and past operational history from a neutral expert's perspective, and design an optimal investigation plan. 2. Historical Investigation (Phase 1): Collect and scrutinize objective materials such as residential maps and registration records to narrow down past land use, handling of chemical substances, and areas of risk. 3. Development of Sampling Plan: Based on the risk areas identified in the historical investigation, establish appropriate sampling locations and measurement items that meet public standards such as those set by the Ministry of the Environment. 4. Soil Overview Investigation (Phase 2) and On-site Sampling: Conduct accurate sampling of soil and gas on-site under the strict management system of the designated investigation agency according to the plan. 5. Precise Laboratory Analysis and Evaluation: Conduct chemical analysis based on public standards to quantitatively and scientifically determine the types of hazardous substances and the presence and extent of contamination against environmental standards. 6. Risk Control and Future Planning: Based on the analysis results, propose a planned management plan that includes the calculation of appropriate costs necessary for the smooth progress of land transactions or reconstruction, while continuing factory operations.