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  6. Designated Investigation Agency | Comprehensive Investigation Leading Negotiations in Land Sales | Geotech

Designated Investigation Agency | Comprehensive Investigation Leading Negotiations in Land Sales | Geotech

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Soil contamination survey

last updated:Jul 16, 2026

ジオテック
ジオテック
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Securing overwhelming leadership and transparency in land sale negotiations! A comprehensive environmental survey covering everything from usage history investigation to soil gas analysis and clear determination of contamination scope.

In high-value transactions of commercial real estate or negotiations for land purchases, proceeding with a deal while the risk of underground soil contamination remains unclear poses a critical risk of either accepting unjust discount demands or facing substantial environmental defect damage claims after the transfer. This comprehensive investigation service provides a practical solution to fully visualize the environmental safety of the land before the transaction, ensuring a leading position and overwhelming transparency in the negotiation process. First, in Phase 1, the usage history investigation thoroughly examines the registry, closure drawings, and changes in land classification history to objectively identify areas of concern regarding hazardous substances. Next, in Phase 2, a high-precision on-site investigation is conducted, including rapid soil gas analysis and surface sampling, to scientifically verify the presence of contamination, including Class 1 specified hazardous substances. In the event of contamination detection, detailed drilling is carried out to accurately determine the extent of contamination, allowing for logical calculation of specific remedial costs, which serves as a solid basis for liability clauses and price adjustments in the contract, effectively blocking unfavorable transactions.

    Site and ground investigationDismantling and movingOther civil engineering services
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Designated Investigation Agency | Comprehensive Investigation Leading Negotiations in Land Sales | Geotech

photo9.jpg
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  • Related Link - https://www.jiban.co.jp/service/env/index.htm
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basic information

This comprehensive survey is a specification for designated investigation agencies in accordance with the Soil Contamination Countermeasures Act, directly related to the practicalities of land sale contracts and due diligence. In Phase 1, a historical review is conducted by multi-analyzing public registration land use, old maps, and aerial photographs to carry out a usage history investigation. In Phase 2, a general survey is conducted following specified mesh standards, which includes high-precision sampling and detection of volatile organic compounds through soil gas analysis, as well as surface sampling of Category 2 and Category 3 hazardous substances. In Phase 3, a detailed survey is conducted with depth-specific soil sampling through additional boreholes, accurately determining the three-dimensional extent of contamination and quickly delivering detailed reporting data that serves as the basis for estimating remediation costs.

Price information

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Price range

P3

Delivery Time

P4

Applications/Examples of results

It is utilized in the buying and selling of real estate such as commercial land, former factory sites, and former gas station sites, as well as during the due diligence negotiations of land assets in M&A transactions. For the seller, it serves as an objective proof of integrity that eliminates the risk of post-transfer defect liability and long-term disputes. For the buyer, it becomes the strongest investment defense data that prevents the unexpected assumption of off-balance-sheet environmental liabilities and enables purchases at fair prices. By providing clear data from historical analysis to soil gas analysis and contamination range determination, it perfectly dispels doubts from both parties and facilitates the establishment of safe and swift contracts in compliance with regulations, making it ideal for business practices.

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Designated Investigation Agency | Soil Contamination Survey | Comprehensive Pre-Investigation Process to Secure Absolute Dominance in Land Sale Price Negotiations and Ensure Complete Transparency | Geotech

Designated Investigation Agency | Soil Contamination Survey | Comprehensive Pre-Investigation Process to Secure Absolute Dominance in Land Sale Price Negotiations and Ensure Complete Transparency | Geotech

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Soil contamination survey

Soil contamination survey

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ジオテック

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