Phase 2 - Site Investigation

Phase 2 - Site Investigation

The site investigation is the bedrock on which good engineering design is based.

It determines the environmental and geotechnical position of the site, allowing detailed design of foundations, superstructures and remediation to occur.

Correct interpretation of ground data and production for an accurate ground model is integral to the success of any project. Our multi-disciplinary team can draw upon a range of expertise from geotechnical engineering, geophysics, environmental science and engineering geology to implement a holistic strategy to characterise your site.

Building on information obtained during the Phase 1 Desk Study, we utilise a range of techniques depending on the requirements of the investigation including trial pits, window sampling or cable tool, rotary and cored boreholes.

Once site and laboratory data is collated, we analyse the environmental samples to formulate a conceptual site model with a qualitative and quantitative risk assessment highlighting any pollution linkages to provide remediation statements. Our Geo-Environmental engineers can use the detailed geotechnical information to provide foundation design for your project.

Services include:

Non-Intrusive Investigation

Our team of geophysicists and geologists are well versed in designing non-intrusive investigations for a wide range of applications. We provide non-intrusive geophysical surveys, archaeological geophysics and utility mapping solutions to support engineering and other projects in the private and public sectors.

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We will work closely with you to design a survey strategy that will give you the information needed to plan a successful project, avoid unnecessary risks, and deliver on time and to budget. Our skilled engineers work to industry standards such as BS5930 and PAS128, and best practice guidelines from The Survey Association and English Heritage.

Boreholes

We are able to undertake a range of boreholes to depths in excess of 30m below ground level. These include:

• Window Sampling
• Cable Percussion/ Shell and Auger
• Rotary Open Hole and Coring
• Small diameter Rotary for Mine Investigations
• Road Coring
• Hand Augering

We are happy to advise on the appropriate type of boreholes you require for your scheme.

Trial Pits

Trial pits are the simplest and most common technique employed to determine sub-surface conditions. From hand dug pits to large scale excavations with tracked machinery, we can offer a solution to fit your needs.

Infiltration Testing

With increasing requirement from Water Authorities to utilise soakaways to naturally disperse surface water runoff into the underlying geology. It is important that robust, site specific data is collected to ensure they are designed correctly. Met Consultancy Group undertake both falling head tests in small diameter boreholes or full scale trial pit soakaway tests to gather the necessary information.

In-situ Gas & Water Monitoring

Utilising industry standard gas monitoring equipment, we monitor land gas emissions across sites. This is generally through perforated standpipes installed into the underlying strata.

Laboratory Soil & Water Testing

Working with UKAS and MCERTS accredited laboratories, we offer a full suite of environmental and geotechnical soil and water tests. This includes, but not limited to:

• Suites of Contamination Testing for both Soil and Water
• Topsoil Testing to BS3882:2007
• Waste Acceptance Criteria
• Geotechnical and Rock Testing

Should you have specific requirements, our environmental consultants are happy to advise on the testing you need.

Qualitative & Quantitative Risk Assessment

All risk assessments are based upon the nature and extent of contamination in the environment. To develop an assessment that quantifies all present risks, it is important to ensure an effective sampling strategy is employed. This includes identifying and sampling the full range of environmental media that can form a contaminant source. Our experienced engineers will design a comprehensive methodology tailored to the needs of the site with the requisite information obtained to inform an accurate assessment of risk.

In-situ Geotechnical Testing

We offer the following in-situ geotechnical testing as part of a wider site investigation or on a standalone basis. Results can be published on a factual or interpretive basis

• Dynamic Cone Penetrometer
• Plate Bearing Tests
• Californian Bearing Ratios
• Shear Vane Testing

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