ジオテック List of Products and Services

This is a highly specialized environmental analysis service unique to designated investigation agencies that balances the proper disposal of construction-generated soil (construction residual soil) with the avoidance of soil risks in land transactions. We completely eliminate critical risks that frequently occur in the practical aspects of soil removal, such as "work stoppages due to inadequate sampling" and "refusal of acceptance due to insufficient analysis items," through thorough pre-specification confirmation procedures. In accordance with regulations that require "full-layer sampling based on excavation depth," we utilize techniques such as dry drilling to accurately reflect the soil composition at different depths during sample collection. Additionally, we have established a comprehensive countermeasure scheme from the sampling stage for additional analysis items, such as oil content and dioxins, which are uniquely specified by private disposal sites. Anticipating a stringent review environment where the reuse of existing data is not permitted in public works in the metropolitan area and local government residual soil ordinance registration practices, we provide clear official analysis data specific to the lot quickly, enabling efficient disposal of residual soil without halting construction.

• Site and ground investigation
• Environmental Survey
• Geological Survey

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.

• Site and ground investigation
• Environmental Survey
• Geological Survey

In recent years, in land transactions and construction projects, early soil contamination measures during operations and the establishment of reliable evidence for construction-generated soil have become essential to avoid asset value decline due to soil contamination and troubles related to the rejection of surplus soil. As a designated investigation agency under the Soil Contamination Countermeasures Act, our company provides investigation techniques that meet all site needs, from boring in narrow sites to official analysis of large-scale surplus soil. Particularly in surplus soil disposal, we standardize procedures for pre-specification confirmation to eliminate the risk of construction delays and ensure the implementation of "full-layer sampling according to excavation depth" that complies with regulations such as the Chiba Prefecture surplus soil ordinance. We can quickly respond to the unique practical bias of public works that prohibits the reuse of existing data by disposal site, with a sampling plan directly linked to the site. We also identify additional analysis items unique to disposal sites, such as oil content, dioxins, and heavy metals, and issue measurement certificates. From the registration practices for public works in the city to clearing various surplus soil ordinances, we strongly support the procedural tasks of purchasing personnel and technical managers, ensuring efficient soil and surplus soil management that does not halt construction.

• Site and ground investigation
• Environmental Survey
• Geological Survey

The disposal of construction-generated soil (such as leftover soil from root excavation) that arises from construction work and development activities has become a very complex process due to increasingly stringent soil contamination measures, local government soil disposal regulations, and private standards set by disposal sites. If the procedure for confirming specifications in advance is incorrect, it may result in non-compliance after construction begins, leading to temporary site interruptions and significant risks of delays. This technical proposal thoroughly covers "full-layer sampling according to excavation depth" to fully comply with the regulations of major municipalities, including the Chiba Prefecture soil disposal ordinance, as well as additional analysis measures for different disposal sites, such as oil content and dioxins. We provide the latest official analysis and application support services in a one-stop manner, based on strict constraints such as the inability to reuse existing data for registered practices in public works in Tokyo. This optimal soil analysis solution balances cost reduction and the establishment of high-precision evidence, eliminating the need for rework in construction.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is a soil survey solution focused on recycling that strongly promotes the transition from "waste" of construction-generated soil and excavation residual soil at construction sites to "resource utilization," achieving both a reduction in environmental impact and a dramatic compression of residual soil disposal costs. Under the reliable technology of a Ministry of the Environment-designated survey organization, we conduct high-precision soil analysis and effective sampling that strictly adhere to official methods, quickly providing official evidence that fully meets the stringent acceptance criteria set by the destination sites, public works, and recycling facilities. By appropriately controlling soil contamination risks through meticulous historical investigations, we scientifically prove that the generated soil is a clean resource containing no specific hazardous substances, completely eliminating secondary contamination issues at the relocation site. With GeoTech's abundant ground survey data and speedy analysis system, we significantly enhance cost minimization at the site and contribute to a circular economy at a high level. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to ensure reliable safety in many construction projects.

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

In today's construction sites, where strict compliance is required, this high-precision official analysis solution completely eliminates legal penalties and illegal dumping risks associated with improper handling of surplus soil, ensuring that all disposal sites' acceptance criteria are met without any doubt. Under a solid legal status as a Ministry of the Environment-designated investigation agency and measurement certification business, we conduct precise leaching and content tests of specific harmful substances in full compliance with the Soil Contamination Countermeasures Act, providing perfect official evidence that guarantees maximum reliability to authorities and receiving parties. By clearly defining risk categories through meticulous historical investigations and executing sampling at the most logical locations, we ensure perfect soil contamination risk management without overlooking any details while controlling excessive costs. With GeoTech's years of specialized knowledge and strict data management that does not tolerate misconduct, we achieve a high level of compliance with corporate regulations and reliable cost reduction. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to ensure safety in many construction projects.

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

This is a speed-priority soil investigation and residual soil acceptance standard countermeasure solution designed to save sites facing an extremely tight schedule where delays in construction excavation processes and underground development are absolutely unacceptable. While maintaining strict quality as a Ministry of the Environment designated investigation agency, we conduct precise soil analysis and rapid sampling in full compliance with official methods, providing timely official evidence required by authorities and disposal sites with astonishing lead times. By combining accurate historical site investigations with rapid sampling techniques, we eliminate any unnecessary rework and complete soil contamination risk management in the shortest possible time. This preemptively removes all bottlenecks in the schedule, such as halting excavation work due to waiting for analysis results, disruptions in dump truck dispatch plans, and unexpected residual soil disposal costs due to acceptance refusals. With GeoTech's overwhelming mobility and immediate delivery system, we fully achieve both cost minimization and strict adherence to deadlines on-site. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to ensure safety in many construction projects.

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

This is a specialized soil investigation solution for the redevelopment of factory sites and business premises where the use of various harmful substances is a significant concern. It fully visualizes the unique legacy risks associated with each industry and ensures compliance with the acceptance standards for construction soil. Based on advanced knowledge as a Ministry of the Environment designated investigation agency, it conducts high-precision leaching and content analysis strictly in accordance with official methods, breaking down the manufacturing processes of each industry multilayered, and provides perfect official evidence that meets the legal requirements demanded by disposal sites and municipalities. Instead of blindly incurring high costs to inspect all items, it optimizes investigation costs by logically screening target substances through accurate historical research and designing optimal sampling plans, while thoroughly managing soil contamination risks. This approach eliminates serious business risks such as project delays due to sudden contamination discoveries during construction and soaring disposal costs due to rejection of soil acceptance. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to ensure safety in many construction projects.

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

This is a specialized investigation solution tailored for extremely limited spaces where large rotary boring machines and survey vehicles cannot enter, such as densely populated urban areas, commercial districts, and the interiors of operating factories. It ensures reliable soil contamination surveys and measures for the acceptance standards of construction waste. Under the strict quality control of a Ministry of the Environment-designated investigation agency, it combines precise analysis fully compliant with official methods and groundbreaking sampling techniques that do not impact buildings or surrounding businesses, providing official evidence required by authorities and disposal sites swiftly. By identifying risk areas through meticulous historical investigations in advance and conducting pinpoint, reliable depth surveys, it optimizes investigation costs while thoroughly managing soil contamination risks without oversight. This approach eliminates all risks associated with urban sites, such as noise complaints from neighbors, project delays due to contamination discoveries during construction, and unexpected surges in disposal costs, ensuring safe and smooth project progression. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to guarantee safety in many construction projects.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is a specialized soil contamination countermeasure and residual soil disposal solution focused on the rebuilding and closure of chemical and plating factories, as well as risk prevention during operations. As a designated investigation agency by the Ministry of the Environment, we conduct precise analyses based on official methods that cover specific hazardous substances used across various industries, along with rapid sampling, providing official evidence that meets legal requirements. Utilizing advanced techniques to collect soil from beneath factory floors and around narrow machine pits without halting operations, we visualize the latent leakage risks underground. This helps prevent catastrophic management troubles, such as sudden discovery of enormous purification costs or construction stoppages during future land sales or rebuilds, thereby safeguarding the healthy asset value and social credibility of companies. Our comprehensive package supports everything from voluntary investigations during operations to mandatory investigations based on regulations, and compliance evaluations for generated soil acceptance standards. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to ensure reliable safety in many construction projects.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is a large-scale project-specific research solution designed to comprehensively address the disposal challenges of a significant amount of construction-generated soil and residual soil from root excavation that arise from large-scale urban redevelopment and extensive infrastructure construction. As a designated research institution by the Ministry of the Environment, we conduct precise soil analysis based on official methods and efficient sampling surveys on a large scale, providing evidence to reliably demonstrate compliance with the strict acceptance standards required by various disposal sites and municipalities. We accurately zone the unique soil contamination risks of vast sites through preliminary historical investigations, optimizing analysis costs while ensuring thorough risk management without oversight. This completely eliminates the substantial loss risks associated with waiting times for dump trucks due to delivery refusals and project delays caused by the discovery of contamination during construction. With GeoTech's overwhelming mobility and reliable data, we strongly drive down the costs of large-scale construction and ensure adherence to schedules. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation for ensuring safety in many construction projects.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is a regulation-compliant soil investigation solution that fully meets the complex soil disposal regulations that vary by region and the strict acceptance criteria set by disposal sites, thoroughly preventing construction delays. As a designated investigation agency by the Ministry of the Environment, we conduct high-precision soil analysis and accurate sampling based on official methods that meet the requirements of each municipality, providing perfect evidence to facilitate administrative discussions. By consistently supporting everything from preliminary historical investigations to obtaining transportation approval, we eliminate the risk of unexpected increases in soil disposal costs due to review rejections or acceptance denials. With GeoTech's extensive experience in administrative responses and a speedy analytical system, we strongly back up compliance and adherence to tight construction schedules. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to ensure safety in many construction projects.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is an advanced investigation solution specialized for land transactions, aimed at completely clarifying the underground soil contamination risks that can become significant issues after contracts are signed or after handovers in real estate development and land sales by developers. Under a strict management system as a Ministry of the Environment designated investigation agency, we conduct precise analyses based on public law, providing solid evidence to ensure the safety of transactions. By logically narrowing down areas of concern through preliminary historical investigations and executing sampling at optimal locations, we optimize investigation costs while achieving high-precision risk extraction without oversight. This prevents fatal troubles such as unexpected purification costs after purchase or halting of development plans, thereby protecting the brand value and assured business profits of companies. It is an essential package for land sales that eliminates disadvantages for both sellers and buyers, supporting a smooth and transparent asset transfer. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to ensure safety in many construction projects.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is a comprehensive acceptance criteria countermeasure package aimed at preventing the increase in disposal costs of surplus soil, which is the biggest concern in construction projects. To meet the strict acceptance standards of local government ordinances and private acceptance destinations, we provide high-precision soil analysis and rapid sampling based on official methods in a one-stop service. By conducting accurate historical investigations in advance, we appropriately control soil contamination risks and thoroughly eliminate unnecessary re-investigation costs and delays in construction schedules. Utilizing GeoTech's extensive ground database and specialized expertise, we strongly support cost reduction and smooth construction progress. We propose an optimal solution that simultaneously achieves safety certification and cost optimization, contributing to compliance adherence and profit assurance for business owners and contractors. This service is the optimal choice for thoroughly reducing your business risks and maximizing cost performance, serving as a solid foundation to ensure reliable safety in many construction projects. We will guide you to the best approach at any site.

• Site and ground investigation
• Environmental Survey
• Geological Survey

In recent years, there has been a rapid increase in companies conducting voluntary soil contamination and residual soil surveys, even in private land transactions that are not subject to laws or regulations, as well as during modifications or rebuilds of operating factories. This is because if contamination or non-compliance with standards is discovered at the stage of land sale, it can lead to costly soil replacement work being required in a short period before the contract, significantly impacting business plans. This service provides optimized pre-compliance analysis for such voluntary risk management and for the Tokyo Metropolitan Environmental Protection Ordinance (notification of modifications over 3000m2, etc.). Utilizing advanced sampling technologies such as simple mechanical boring (SCSC) that can collect all-layer soil samples precisely without stopping production lines in operating offices or factories, even in small sites. By clearing the acceptance criteria for disposal sites in advance and selecting the optimal acceptance location, we comprehensively avoid legacy risks such as depreciation of asset value and unexpected costs.

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

In the Tokyo metropolitan area (Chiba, Tokyo, Saitama, etc.), the disposal of construction residual soil is subject to some of the strictest unique regulations and additional controls in Japan, aimed at preventing the inflow of soil from other prefectures and inappropriate embankment. This service is a specialized analysis and investigation solution designed to ensure compliance with these complex local acceptance standards. It selects the optimal acceptance sites based on a complete mastery of the rules in each region, such as the "5-point mixing method" for 5000m3 of excavated soil under Chiba Prefecture regulations, the "mixing prohibition and pinpoint sampling for sea reclamation" for every 2500m3 at Tokyo Port, and the "sampling standard up to the top 50cm" in Saitama Prefecture. Through GeoTech's reliable process, screening of over 45 items, including additional parameters such as dioxins, oil content, and fluorine, is conducted efficiently, significantly reducing excessive investigation costs.

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

In construction projects, the disposal of construction leftover soil involves complex procedures, and a single mistake can lead to serious risks such as work stoppages or legal penalties. This service provides a total solution that offers everything from planning the preliminary investigation necessary for soil disposal, on-site sampling, high-precision chemical analysis, selection of optimal disposal sites, to support for notifications to authorities, all in a one-stop service. We fully meet over 45 strict standards that vary by region and disposal site (including dioxins, oil content, fluorine, etc.) and comply with volume-based sampling specifications (such as mixed method at five locations). Through GeoTech's integrated management process, we eliminate waste in each step, significantly reducing analysis costs while ensuring strict compliance and smooth progress of construction.

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

To meet the acceptance criteria for excavated soil generated from construction work, accurate sampling that complies with the "sampling depth" and "analysis items" required by disposal sites and municipalities is essential. This technology is a cutting-edge soil investigation solution that selects and utilizes the optimal method according to the geographical environment, confined conditions, and depth at the site. For the top layer, double shovels are used; for shallow layers, heavy machinery is employed; and for accurate deep core sampling at greater depths, a self-propelled boring machine is deployed. This optimal process ensures reliable soil screening without rework and significantly reduces analysis costs. Furthermore, it strongly supports the swift selection of safe acceptance sites by reliably meeting stringent acceptance criteria (such as dioxins, oil content, fluorine, etc.) that exceed 45 items, as well as regional lot regulations.

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

The disposal of construction soil in the metropolitan area (Tokyo, Chiba, Saitama, etc.) is subject to very strict local ordinances and additional regulations due to concerns about inflow from other prefectures and inadequate soil filling measures. This service provides a comprehensive pre-compliance analysis that fully covers the significantly different acceptance standards and sampling specifications for each region. For example, it selects the most suitable acceptance sites for each location, such as the "5-point mixing method" for every 5000m3 in Chiba Prefecture, and the "mixing prohibition and sea reclamation standards" for every 2500m3 at Tokyo Port. Based on Geotech's expertise, it accurately screens the analysis items specified by the ordinances (including more than 45 items such as dioxins, oil content, and fluorine), thereby reducing excessive investigation costs while fully complying with regulations.

• Site and ground investigation
• Environmental Survey
• Geological Survey

In large-scale construction and civil engineering projects, how to efficiently and legally dispose of the massive amounts of excavated soil is key to controlling costs and timelines. This survey service provides analysis and investigation that fully complies with strict acceptance criteria defined on a volume basis, such as every 5000m3 (according to Chiba Prefecture regulations), every 2500m3, or every 50m square (according to Tokyo Port terminal standards). By optimally combining the "5-point mixed method" for efficiently sampling soil from vast areas and pinpoint methods for direct sampling from specific depths, we can quickly conduct large-scale soil screening. Geotech's reliable processes reduce analysis costs by eliminating excessive surveys and achieve optimization in site selection and smooth transportation planning.

• Site and ground investigation
• Environmental Survey
• Geological Survey

The success of construction projects requires "prevention of environmental pollution" and "complete avoidance of work stoppages" as absolute conditions in the disposal of excavated soil. If improper handling is discovered, there is a risk of severe penalties for the client and the prime contractor, including legal sanctions and loss of social credibility. This technology provides a high-precision compliance analysis service that covers national soil environmental standards, internal standards of various disposal sites, and stringent local ordinances. Sampling is conducted using the optimal process according to site conditions, from the surface layer to deep cores, presenting reliable data that eliminates ambiguity. By objectively proving high safety through prior compliance analysis, it prevents troubles in selecting disposal sites and strongly supports the smooth progress of construction from a technical standpoint.

• Site and ground investigation
• Environmental Survey
• Geological Survey

Delays in construction projects can lead to significant losses. This survey service provides the necessary pre-compliance analysis for the disposal of excavated soil at an overwhelming speed, thoroughly avoiding work stoppages. It instantly clears the complex regulatory standards that vary by region and municipality, and quickly navigates to the selection of optimal disposal sites. It also responds without setbacks to strict specifications based on volume, such as 5000m3 in Chiba Prefecture and 2500m3 at Tokyo Port. By selecting the most suitable sampling methods based on the situation and implementing an efficient process that eliminates waste, we achieve significant reductions in analysis costs and shortened delivery times. Geotech's reliable speed response strongly supports sites with tight construction schedules.

• Site and ground investigation
• Environmental Survey
• Geological Survey

In the disposal of excavation soil resulting from construction work, preventing environmental pollution and avoiding work stoppages are the top priorities. To prevent legal penalties and sanctions due to improper handling, we provide a pre-compliance analysis that fully adheres to the unique regulations and strict additional regulations of each municipality. This enables the selection of the optimal disposal site according to the geographical environment of the region and the receiving location (landfill or marine landfill), ensuring compliance with strict volume-based standards (e.g., 5000m3 for Chiba Prefecture, 2500m3 for Tokyo Port). Through advanced screening technology and optimal sampling processes, we optimize investigation costs while demonstrating safety. We promise smooth progress for the project.

• Site and ground investigation
• Environmental Survey
• Geological Survey

In the disposal of excavated soil generated from construction work, preliminary surveys aimed at preventing environmental pollution and avoiding work stoppages are essential. This technology provides the latest analytical methods and survey processes that significantly reduce the analysis costs of construction residual soil while accurately meeting the various regulations and acceptance standards that differ greatly by region and municipality. It covers everything from selecting acceptance sites suited to land and marine reclamation environments to responding to strict volume-based standard values and choosing the optimal construction methods according to the situation. Through Geotech's reliable survey process, it eliminates significant risks such as legal penalties and loss of social credibility associated with improper disposal, thereby fully supporting the smooth progress of projects.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is a proposal for an electric simple boring method (SCSC method) that enables high-precision soil contamination surveys in narrow indoor spaces and difficult-to-ventilate enclosed areas without stopping factory operations or sales. It operates in a clean environment with zero exhaust emissions, allowing for the undisturbed collection of soil cores from concrete pavements and directly beneath pits down to a depth of 5 meters, accurately visualizing the subsurface infiltration of specific harmful substances.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is a manual for the analysis of construction residual soil (construction-generated soil and root excavation residual soil) that complies with the different municipal regulations and unique standards of receiving locations in the metropolitan area (Chiba Prefecture, Tokyo, Saitama Prefecture, Tokyo Port Terminal, etc.). It optimizes the investigation to ensure compliance with transportation regulations, including the applicability of the five-point mixed method, the calculation of sample numbers based on volume, and the selection of additional analysis items such as dioxins and oil content.

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

This is a proposal for early soil contamination measures to understand the current status of soil contamination during factory operations and to gradually eliminate potential underground leakage risks. It includes assessing the current situation of the factory, conducting soil contamination surveys during operations, planning preventive measures to prevent new contamination, and introducing on-site remediation and bio-injection technologies that can be implemented through annual plans without stopping operations, thereby leveling the costs required to maintain healthy land.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is an efficient process for soil contamination surveys based on the Soil Contamination Countermeasures Act and the environmental protection ordinances of prefectures. From understanding land use history through Phase I historical investigations to confirming the presence or absence of contamination through Phase II on-site soil and soil gas sampling and chemical analysis, we will respond reliably as a designated investigation agency. We will propose an optimal survey plan that minimizes unnecessary costs.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is the soil analysis investigation process for the proper disposal of excavated soil and construction waste generated from construction work. Based on the unique regulations of each municipality and the acceptance criteria of disposal sites, efficient sampling and accurate chemical analysis are conducted. It also addresses the additional standards for dioxins and oil content, ensuring that project delay risks and legal risks for the client are effectively avoided.

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

• Site and ground investigation
• Dismantling and moving
• Other civil engineering services

In the collateral evaluation by financial institutions, understanding the potential soil contamination risks of the target real estate is crucial. Soil contamination not only affects the value of the land but may also involve future remediation costs and legal liability risks. To assess these risks in advance and make appropriate decisions, a soil contamination survey based on specialized knowledge is essential. Geotech, as a "designated survey organization" by the Ministry of the Environment, conducts soil contamination surveys necessary for collateral evaluation with optimal plans tailored to the client's objectives and land risks, providing accurate risk assessments. 【Usage Scenarios】 - Collateral value assessment of real estate for financing - Risk assessment in real estate investment - Soil contamination surveys in due diligence (DD) 【Benefits of Implementation】 - Visualization of soil contamination risks in collateral evaluation - Reduction of future remediation costs and legal liability risks - Support for more reliable lending decisions

• Site and ground investigation
• Environmental Survey
• Geological Survey

In real estate development, accurately understanding the potential risks of land is essential for the success of the project. In particular, soil contamination resulting from past land use can lead to unexpected cost increases and development delays. Therefore, appropriate risk assessment before starting development and detailed investigations as needed are crucial. GeoTech, as a "designated investigation agency" by the Ministry of the Environment, formulates optimal investigation plans tailored to the client's objectives and land risks, and conducts accurate risk assessments. 【Application Scenarios】 - Risk assessment before purchasing new development land - Investigations before the demolition and reconstruction of existing buildings - Confirmation of soil contamination in land transactions - Environmental impact assessments in development plans 【Benefits of Implementation】 - Reduction of soil contamination risks associated with development - Prevention of unexpected additional costs and delays in construction timelines - Support for smooth acquisition of permits and approvals - Increased certainty in business planning

• Site and ground investigation
• Environmental Survey
• Geological Survey

In the demolition industry, it is important to confirm the presence or absence of soil contamination associated with building demolition work. Particularly, depending on the historical land use, there may be unintentional soil contamination, and it is necessary to understand this risk in advance and respond appropriately. If soil contamination is identified, there is also a risk of delays in demolition work and additional costs. GeoTech, as a "designated investigation agency" by the Ministry of the Environment, provides reliable one-stop consulting from soil contamination risk assessment before demolition to proposals for remediation measures in case contamination is discovered, as well as construction and management. 【Usage Scenarios】 - Investigation of land use history before demolition work - Voluntary screening investigations - Detailed investigations based on legal regulations - Proposals, construction, and management of remediation measures in case soil contamination is identified 【Benefits of Implementation】 - Risk assessment during the planning stage of demolition work - Prevention of construction delays due to unexpected soil contamination - Cost management through appropriate measures - Assurance of legal compliance

• Site and ground investigation
• Environmental Survey
• Other civil engineering services

In the construction industry, land surveys require careful consideration of future building plans and their impact on the surrounding environment, as well as an accurate understanding of the presence and risks of soil contamination. In particular, detailed investigations based on past land use history and geological characteristics are essential to prevent unexpected additional costs and delays in construction schedules. If soil contamination is identified, failing to take appropriate measures may hinder the progress of the project. Geotech, as a "designated investigation agency" by the Ministry of the Environment, provides a one-stop solution from risk assessment of soil contamination in land surveys to proposals for remediation measures in the event contamination is confirmed, as well as construction and management. 【Usage Scenarios】 - Preliminary surveys before acquiring new construction sites - Site surveys after the demolition of existing buildings - Voluntary risk management 【Benefits of Implementation】 - Reduction of risks in land acquisition - Optimization of costs and schedules during the planning phase - Compliance with regulations and environmental conservation - Smooth project advancement

• Pile and foundation work
• Other earthworks, foundation works, and exterior floors
• Other civil engineering services

In chemical plant sites and former sites, a wide variety of chemical substances are manufactured and used, making it essential to objectively understand the risk of soil contamination as a key to smooth business operations. Conducting early soil contamination investigations (historical surveys and soil condition surveys) during factory reconstruction, land sales, or ongoing operations directly relates to the proper assessment of future asset value and compliance with legal regulations. By identifying and quantifying contamination risks in advance from a neutral technical perspective, it is possible to prevent unexpected troubles and costs during transactions or construction, allowing for the formulation of rational budgets and business plans. Additionally, early detection during operations enables planned management and measures that minimize impacts on the surrounding area, providing significant benefits in maintaining and protecting the company's social credibility and a healthy operating environment over the long term.

• Site and ground investigation
• Environmental Survey
• Geological Survey

In transactions and redevelopment of former printing factories and binding shops, early detection of invisible soil contamination risks is essential. The harmful substances handled on-site vary greatly depending on the printing method and process, such as organic chlorine solvents widely used for offset blanket cleaning, hexavalent chromium as gravure cylinder plating solution, cyanide for undercoating, and lead derived from letterpress type. In particular, the drainage routes of organic chlorine solvents that were consumed and disposed of in large quantities during daily roller cleaning and plate development, as well as the risk of penetration into the floor, are the most critical points to focus on. The advantage of conducting early investigations lies in scientifically identifying these specific contamination risks, which can completely eliminate future risks of land value decline, construction delays, and legal setbacks considered illegal dumping, thereby enabling safe and rational land asset management and redevelopment planning.

• Site and ground investigation
• Environmental Survey
• Geological Survey

In the real estate appraisal standards, the presence or absence of soil contamination is clearly defined as an important individual factor in residential, commercial, and industrial areas, and it is one of the price formation factors that determine the utility and economic value of real estate. To make proper price assessments and judgments on the highest and best use, it is essential to clearly understand and analyze this risk from the perspective of market participants. Therefore, conducting a historical investigation (Phase 1) at an early stage before purchasing or transferring land is extremely beneficial in preventing unexpected declines in asset value and avoiding troubles during land transactions. Even if the land currently appears to have no issues, researching the history of past factories or similar establishments through residential maps or registries can help control the risks associated with the transfer in advance.

• Site and ground investigation
• Environmental Survey
• Geological Survey

In an operating factory, conducting an early soil contamination survey and quickly understanding the risks is extremely important to prevent potentially fatal losses in management and operations. By conducting the survey while the factory is in operation, appropriate measures can be swiftly implemented to prevent the spread of contamination to surrounding areas, even if contamination is discovered. Additionally, the greatest benefit is the increased likelihood of being able to "carry out soil contamination measures while continuing operations." Not only can one gain peace of mind by confirming the presence or absence of contamination early on, but it also allows for budgeting and planning for soil contamination remediation costs in preparation for future rebuilding or land sales. By anticipating risks from past land use through a historical survey (Phase 1) and confirming the presence of contamination and estimating appropriate costs through a soil condition survey (Phase 2), it is possible to avoid sudden declines in asset value and troubles during land transactions, thereby protecting long-term asset value and social credibility.

• Site and ground investigation
• Environmental Survey
• Geological Survey

This is the Swedish sounding test (SWS test) recommended in the "Guidelines for the Basic Design of Small-Scale Buildings" edited by the Architectural Institute of Japan. We will submit two separate reports that distinguish between objective data and ground diagnosis and considerations. All personnel responsible for on-site investigations and analytical considerations are certified ISO 9001 within the company, and we conduct wear measurements of the screw points each time to ensure testing accuracy. Furthermore, based on advanced data analysis utilizing the "GEODAS" database of 50,000 residential ground data in the metropolitan area, we will calculate allowable stress in accordance with building code notifications and propose optimal foundation specifications.

• Site and ground investigation
• Ground foundation construction method
• Pile and foundation work

This is a dynamic cone penetration test service that can obtain high-precision and continuous data as a complement to standard penetration tests and SWS tests. It addresses strata with N values exceeding 30, which are difficult to measure in SWS tests, and boasts excellent penetration capability of up to around N value 50. The main feature is the ability to obtain continuous data (Nd values) every 200 mm. By measuring the rod's rotational torque and automatically correcting for the effects of side friction, it calculates reliable data that correlates almost 1:1 with the N values of standard penetration tests (Nd = N), enabling accurate determination of bearing layers.

• Geological Survey Company
• Ground foundation construction method
• Pile and foundation work

This is a carbon fiber reinforcement system for existing concrete strip foundations that has obtained housing disaster prevention technology evaluation (evaluation number DPA-Housing Technology-23) from the Japan Architectural Disaster Prevention Association and has been registered as a utility model. By firmly adhering high-strength carbon fiber sheets to the foundation surface using matrix resin, it significantly improves shear strength, ductility, and seismic resistance. Unlike traditional underpinning methods that face many challenges in terms of weight, construction period, and cost, this system can reliably restore existing foundations with no reinforcement or deteriorated cracks to a robust supporting structure that far exceeds the original strength at the time of construction, without significantly changing the weight or cross-section of the structure.

• Renovation and repair methods
• Residential foundations
• Other earthworks, foundation works, and exterior floors

This method involves injecting grout (injection material) into the ground to lift and restore tilted or sunken buildings while simultaneously enhancing the ground's bearing capacity. The method consists of three "i (injection)" processes. First, repeated injections are made to form a "support plate" on the supporting layer. Next, injections are made beneath the foundation to create a "lift plate." Finally, "lift-up injection" is performed between the support plate and the lift plate to precisely raise the entire building. Utilizing laser measurement devices and computer-controlled three-dimensional tilt measurement systems, the tilt is continuously measured in real-time, allowing for precise leveling adjustments, making this a highly accurate, reliable, and safe construction technique.

• Renovation and repair methods
• Pile and foundation work
• Other earthworks, foundation works, and exterior floors

We provide settlement correction work based on advanced engineering for buildings that have experienced differential settlement. Using the most proven method, the "steel pipe pile driving method," we reliably drive steel pipe piles to the supporting ground using hydraulic jacks, with the weight of the building serving as the reaction force, thereby supporting and correcting the entire structure. This method not only allows for precise horizontal correction of severe tilting but also possesses high durability to prevent future re-settlement. Additionally, based on the engineering analysis of the ground and settlement conditions, we select the optimal method from a variety of options such as "pressure slab method," "building relocation and new foundation pile construction," and "cement milk injection method," ensuring a reliable solution is implemented.

• Renovation and repair methods
• Pile and foundation work
• Other earthworks, foundation works, and exterior floors

This is a ground improvement method that can be selected when weak layers are distributed at shallow depths. It involves uniformly mixing and stirring powdered cement-based solidifying materials with the original ground soil using heavy machinery, and carefully compacting it to construct a strong "slab-like improved body." This method demonstrates extremely excellent engineering effects in preventing differential settlement, increasing ground bearing capacity, and preventing liquefaction, reliably supporting important structures from the ground up. The construction process is characterized by low noise, low vibration, and short construction time, minimizing the impact on the surrounding environment. Through clear construction procedures and engineering approaches, it achieves reliable ground bearing capacity reinforcement as required by designers and supervisors.

• Ground improvement
• Ground foundation construction method
• Pile and foundation work

This is a reliable and secure method for reinforcing the ground with pile-like structures for single-family homes, which solidifies cement milk directly underground into pile shapes, demonstrating high quality and strength regardless of soil type. Using a drilling rod equipped with a conical excavation head, it advances to the support depth while laterally expanding the original ground and fills it with cement milk, creating high-quality pile-like columns. The greatest advantage is that the quality of the columns is not affected at all by the soil type, as the cement milk is not mixed with the local soil. By adopting a conical head, the risk of mixing excavated soil clumps is eliminated, and the construction principle that does not loosen the ground ensures stable and significant vertical bearing capacity.

• Residential foundations
• Renovation and repair methods
• Other civil engineering works