Geocon Site Investigations Engineering Geologists
We provide site investigation, ground investigation, geotechnical and environmental consultancy and geothermal services across the UK. Our site investigation consultants and contractors specialise in environmental (geoenvironmental), geotechnical & geothermal consulting with construction industry focus on ground engineering and engineering geology for Brownfield and Greenfield land.
Phase I Preliminary Risk assessment or Preliminary Site Investigations (desk studies) are prepared by environmental consultants and are used to gain a profile of a site to establish its environmental setting including the site history, geology, topography, hydrology, hydrogeology, mining history, and nearby landfill sites. Read More
GeoCon undertake site investigations of both brownfield and greenfield land. All site investigations are designed / targeted based on information collated in the initial Phase I Preliminary Risk Assessment and are subsequently undertaken via Phase II intrusive site investigation. Read More
The ground investigation is the most fundamental part of the site investigation as a whole. Following the results of a Phase I Preliminary Risk Assessment, when a Phase II site investigation is required which en-compass’s the ground investigation. Read More
GeoCon Site Investigations Ltd are a GeoEnvironmental consultant / contractor who specialises in the investigation of land for GeoEnvironmental purposes focusing on both brownfield land and greenfield land. Read More
GeoCon Site Investigations Ltd offer a full geotechnical service ranging from site investigation, through to geotechnical consultancy. What ever the project we have a highly skilled team that can provide a geotechnical consultancy service. Read More
GeoCon have a vast experience in designing and undertaking mining investigations. Coal mining has been an influencing part of history and industry over the last 200 years and the impact that it has left is also quite extensive. Read More
Service information coming soon..
Similar to property development Phase I and Phase II site investigations are carried out on land prior to its sale to ensure there are no issues with a site and to ensure the seller receives maximum values for their land. Read More
GeoCon conduct ground investigations for infrastructure such as pipe lines, electric cables, sewer networks etc, for a range of clients including utility providers, main contractors, and civil engineers to facilitate the design and implementation of such infrastructure. Read More
GeoCon also work within the rail sector and are RISQS (formerly Linkup) approved. Carrying out ground investigation projects for clients such as Networks Rail, civil engineers, and main contractors, we have the knowledge, expertise, equipment and flexibility to perform to our client’s high expectations. Read More
GeoCon are currently working with a number of wind turbine installers and have a range of clients within this sector. We specialise in ground investigations from a range of turbine sizes from small turbines for domestic properties, to medium sized turbines, and the larger turbines, and entire wind farms. Read More
What is a Site Investigation?
There are three phases of site investigation:
- Phase 1 – Site Investigation Desk Studies or Preliminary Site Investigations. This is the minimum requirement for a developer.
- Phase 2 – Further investigations based on the findings of the preliminary site investigations including sampling and testing.
- Phase 3 – More intrusive testing if deemed necessary at phase 2 either due to significant contamination or variable results across the site.
Why is Site Investigation Necessary?
The purpose of site investigation is to determine the engineering properties of the land and see how its composition of rock and soil will interact with a planned development. With this information, a risk assessment can be carried out to evaluate the risks to humans, the property and the environment.
Phase 1 is the only necessary phase of a site investigation. In this phase, a conceptual site model (CSM) is created to identify pollutant linkages. With the CSM, picture of the sites environmental setting can be drawn up.
The aim of the CSM is to present data clearly to provide support when it comes to deciding how to manage contaminated land or groundwater. Once a CSM has been drawn up, gaps in data will be more obvious and can be considered. Further test may also be required. A CSM can be easily updated to reflect the progress of the site investigation.
Phase 2 may be necessary if further investigations are required to fully inform the making of the CSM. Often, information collected during phase 2 is for geoenvironmental and geotechnical purposes. Each technique tests for something specific so the process is often a combination of intrusive investigations using different techniques.
The ideal Phase 2 Site Investigation would be designed to collect information for the whole site to reduce the need for further investigations. However, on a site that varies widely or has significant levels of contamination further investigations may be required.
Phase 3 follows Phase 2 where further investigations are needed because the site varies or shows significant levels of contamination. Like phase 2, the investigations are all intrusive. Exploratory holes are usually spaced around 25-50 cm apart depending on the size of the site to create a comprehensive picture of the make-up of the site.
By increasing the density of testing areas, a more detailed picture of the site can be built up. This is particularly good for sites that have large variations in the composition of the ground. Further tests on the soils extracted will show the chemical composition of the soils and will give an indication of how much needs to be removed.