Designated Investigation Agency | Independent Investigation of Soil Contamination in Large-Scale Development | Geotech

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Soil contamination survey

last updated：Sep 07, 2026

ジオテック

To prevent delays in large-scale development projects for logistics warehouses and commercial facilities, we eliminate soil risks through buyer-led historical investigations and sampling.

This is a soil contamination self-investigation solution specialized for developers and construction companies planning the construction of logistics warehouses, distribution centers, and large commercial facilities before land acquisition. In the development of vast land, the past usage patterns are often diverse, and overlooking partial contamination risks can be fatal. This service aims to fully protect the interests of the buyer by first thoroughly examining the historical usage of the entire site through a "buyer-side historical investigation." In areas where the possibility of contamination cannot be completely ruled out, a "voluntary Phase 2 sampling investigation" is quickly deployed to directly detect and evaluate soil gas and harmful substances underground through official analysis. This prevents the greatest development risk of exposing contaminated soil after construction begins, which could lead to long-term halts in construction work and the collapse of business plans and tenant attraction. By obtaining accurate risk information in advance, it enables proper management of the project budget and negotiations for land price reductions, guiding the project to success on schedule.

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basic information

We will apply high-efficiency and high-precision survey specifications that match the characteristics of large-scale development sites. In the historical survey phase, we will analyze the history of the extensive site by grid, pinpointing risk areas. As for the sampling specifications, we will accommodate composite sample collection through surface sampling and mechanical boring to maximum depth, precisely determining specific hazardous substances such as volatile organic compounds and heavy metals based on official analytical methods. We will deploy state-of-the-art equipment, such as self-propelled boring machines, that can be rapidly deployed even on vast sites, achieving quick completion of sampling and providing highly reliable data within a short timeframe.

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Applications/Examples of results

Developers, general contractors, and asset management companies for real estate investment trusts utilize environmental due diligence when purchasing land for new logistics hubs and commercial developments. It serves as a voluntary risk assessment tool to meet the company's unique safety standards while clearing the notification obligations for changes in land characteristics mandated by law. It is introduced as reliable background data for determining the feasibility of land purchases before contract signing, clarifying the seller's liability for defects, and establishing the framework for construction budgets.