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  6. Designated Investigation Agency | Self-management of Potential Contamination Risks on Land Without Legal Obligations

Designated Investigation Agency | Self-management of Potential Contamination Risks on Land Without Legal Obligations

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Soil contamination survey

last updated:Jun 29, 2026

ジオテック
ジオテック
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In voluntary land transactions without legal investigation obligations, the potential contamination risks of the ground are visualized through reliable self-history and sampling analysis by designated investigation agencies.

Even in land transactions that do not meet the specific requirements set forth by the Soil Contamination Countermeasures Act and do not trigger statutory obligations such as investigation orders from authorities, the risk of harmful substances being present in the ground cannot be completely denied. If a company neglects to take measures on the grounds that there is no obligation, and contamination is revealed after the transfer, it may face severe disadvantages such as social penalties beyond the legal framework, enormous environmental liabilities, and long-term legal disputes. This service is a voluntary investigation solution designed to proactively maintain corporate compliance and social responsibility, free from legal constraints. Leveraging advanced expertise as a designated investigation agency, we voluntarily conduct everything from self-initiated historical land use investigation reports that objectively substantiate the land's usage history to precise sampling analyses that demonstrate the presence or absence of contamination. By ensuring reliable scientific data is available before the transaction, we can completely visualize and eliminate often-overlooked ground risks, strongly supporting advanced governance appeals to stakeholders and ensuring safe and secure real estate transactions.

    Site and ground investigationDismantling and movingOther civil engineering services
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Designated Investigation Agency | Self-management of Potential Contamination Risks on Land Without Legal Obligations

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

This is a voluntary soil survey specification conducted on non-mandatory land in accordance with the technical standards of designated survey organizations. In the historical investigation step, objective materials such as registration history, old maps, administrative documents, and past aerial photographs are comprehensively examined to create a report assessing potential contamination risks outside of legal regulations. In the sampling step, the survey area is independently set according to the scale of business risks and land use purposes, and surface soil sampling targeting specific harmful substances such as Type 1 (volatile organic compounds) and Type 2 (heavy metals) or soil gas collection is conducted. Precise component analysis data based on official methods compliant with the Ministry of the Environment's notifications is provided, resulting in a voluntary soil contamination survey report that directly informs management decisions.

Price information

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Price range

P3

Delivery Time

P4

Applications/Examples of results

It is utilized for proactive environmental risk management in general commercial land, medium-sized office sites, or private voluntary real estate transactions that are exempt from legal investigation obligations. It is used to accelerate consensus building between parties before the conclusion of the sales contract and to eliminate disputes over future warranty liabilities. Additionally, high-precision voluntary historical investigation reports and sampling analysis results issued by designated investigation agencies are widely adopted in practice as objective evidence for corporate ESG management reporting, internal governance audits to determine the presence of environmental liabilities, and for loan assessments by financial institutions to protect corporate social credit.

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Designated Investigation Agency | Soil Contamination Survey | Voluntary Historical and Sampling Analysis Survey to Mitigate Potential Contamination Risks in Land Transactions Outside Legal Obligations | Geotech

Designated Investigation Agency | Soil Contamination Survey | Voluntary Historical and Sampling Analysis Survey to Mitigate Potential Contamination Risks in Land Transactions Outside Legal Obligations | Geotech

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Soil contamination survey

Soil contamination survey

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ジオテック

ジオテック

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