[Excavated Soil Survey] Official analysis survey of construction-generated soil to address the inability to reuse existing data.

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Soil survey

last updated：Sep 07, 2026

ジオテック

Fully compliant with the rule prohibiting the reuse of existing data by disposal site! Ensuring smooth approval with reliable evidence linked to the remaining soil lot at the site.

This is a high-precision public analysis solution designed to smoothly manage the disposal of large amounts of surplus soil generated during the excavation process of construction work, maximizing cost reduction. Currently, local government surplus soil regulations and private acceptance sites have very strict specifications for sampling methods and measurement items, necessitating individualized responses for each site. Our company thoroughly implements procedures for pre-specification confirmation to eliminate the risk of work interruptions, establishing a system that allows clients and construction companies to confidently proceed with soil removal. Specifically, we utilize a "full-layer sampling technique according to excavation depth" that perfectly fits regulations such as those in Chiba Prefecture, completely verifying contamination risks in the depth direction. We also fully accommodate unique additional analysis items required by disposal sites, such as oil content, dioxins, and heavy metals, thoroughly preventing acceptance refusals due to data deficiencies. We quickly process the registration tasks for public works in the city that do not allow the reuse of existing data and rapidly prepare certification documents. We provide reliable evidence to enhance on-site operational efficiency and fully comply with surplus soil regulations.

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basic information

This service is an analysis package designed to meet the acceptance criteria for construction waste, fulfilling the official review standards as a designated investigation agency under the Soil Contamination Countermeasures Act. It conducts full-layer equal quantity sampling using a dry boring method according to the excavation depth (from GL-0m to a maximum of +1m of the modified depth), thoroughly eliminating contamination between samples. It features a high-precision trigger for additional analyses of oil content, dioxins, and various harmful heavy metals as required by the disposal site. Through rapid data analysis in collaboration with a measurement certification office, it provides specifications for issuing official evidence that fully complies with the public works submission manual, which cannot be reused with data from other sites, in the shortest possible time.

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Applications/Examples of results

It is utilized in the root excavation process associated with the sale and redevelopment of sites such as factories, warehouses, gas stations, and plating or printing factories, where it meets the standards for receiving excavated soil and complies with soil disposal regulations. By following the procedure for confirming the specifications of the disposal site in advance, it completely prevents unexpected construction interruptions on site. It is optimal for ensuring safe and low-cost soil disposal routes through comprehensive sampling at the maximum excavation depth in accordance with Chiba Prefecture's soil disposal regulations, detection and evidence of additional analysis items specific to disposal sites (such as oil content and dioxins), and the rapid issuance of new measurement certificates for each lot in accordance with the rules prohibiting the reuse of data from other sites in the registration practices of public works in Tokyo.