Designated Investigation Agency | Voluntary Investigation to Prevent Development Stagnation Due to Soil Contamination | Geotech

Added to bookmarks
Bookmarks list

Bookmark has been removed
Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.
Free membership registration

Soil contamination investigation

last updated：Sep 07, 2026

ジオテック

To prevent development setbacks due to soil contamination before purchasing land, we propose buyer-led historical investigations and voluntary Phase 2 sampling for risk mitigation.

This is a solution that explains the comprehensive voluntary soil contamination investigation conducted by the buyer to prevent business setbacks caused by "soil contamination," which is the greatest potential risk in land transactions and real estate development. Rather than relying solely on information disclosure from the seller, the investigation aims to ensure safety before land purchase, starting with Phase 1, the "Buyer-side Historical Investigation," which thoroughly uncovers the history of past use of specific hazardous substances and the potential for underground infiltration. If further risks are a concern, a "Voluntary Phase 2 Investigation" will be conducted on-site, where soil gas and sample sampling, along with official analysis, will quantify the presence and concentration of contamination as scientific evidence. This approach effectively avoids critical development risks such as unexpected contamination discoveries leading to delays in construction schedules or business setbacks after the commencement of construction work. In the event of contamination being discovered, it is also possible to calculate countermeasure methods and purification costs in advance, allowing for advantageous negotiations regarding warranty clauses and price adjustments in the sales contract. We provide high-precision investigation services unique to designated investigation agencies that support asset value preservation and safe real estate investment.

Inquire About This Product

basic information

This self-conducted survey service consists of a high-precision process that complies with the technical standards of investigation agencies designated by the Ministry of the Environment. In historical surveys, we conduct detailed analyses of various historical materials such as old maps, aerial photographs, and registration records, as well as on-site investigations. In sampling surveys, we perform soil gas sampling, surface soil sampling, and depth sampling using mechanical boring, targeting specific harmful substances. All analyses are conducted in accordance with officially established methods, having completed registration for measurement certification, and reliable survey reports are issued as evidence. We select optimal equipment tailored to the site environment, including compact boring machines capable of sampling in narrow spaces or within existing buildings.

Price information

Price range

Delivery Time

Applications/Examples of results

The main application scenarios include risk assessment before land acquisition by real estate developers and construction companies, blocking legacy risks associated with M&A of factory sites and land sales in the manufacturing industry, and voluntary safety checks related to new developments of logistics warehouses and large commercial facilities. Even for land that does not fall under the legal obligation to report changes in physical characteristics, it is introduced to prevent future asset value decline and litigation troubles related to warranty liabilities. It is widely used as part of due diligence before the conclusion of sales contracts, as a basis for purchase decisions, negotiation materials for sale prices, and as proof of environmental risks in loan assessments.