SITE INVESTIGATION

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Geotechnics Limited is a company which specialises in designing and conducting geotechnical and geoenvironmental site investigations and providing geotechnical and geoenvironmental consultancy throughout the United Kingdom. Overseas work is also undertaken.

Investigations into the geology and previous use of a site to obtain a knowledge of its engineering, environmental and contamination characteristics are a fundamental part of the planning of safe, economic and sustainable future use of that site, be it for commercial development, residential extensions or public sector projects. We also carry out post-failure analysis and remediation design.

The Company has been certified by Constructionline and listed on the UK Register of Qualified Construction Services. In addition, we have RISQS certification from Network Rail allowing us to undertake projects on railway sites and UVDB prequalification for utilities clients.

The company also has quality management accredited to ISO 9001 and an environmental management system accredited to ISO 14001.


Site Investigation Techniques

Field techniques ranging from simple trial excavations to sophisticated in-situ testing are used to obtain the data required for design and the company's knowledge of the capabilities and characteristics of a wide range of techniques and of the logistics of the investigation process is available to help formulate investigation designs. Whatever technique is employed, it is always under the direction and supervision of Geotechnics' qualified and experienced geotechnical engineers.


Analysis and Reporting

The value of any information is in its relevance to the proposed development and the way it is interpreted. The company's peer-reviewed high quality reports, which are also available as electronic PDF documents if required, and the geotechnical data can be provided in the industry standard AGS format to facilitate transfer of investigation data to the client's own geotechnical database and analysis systems.

Geotechnics' team of engineers is widely experienced in the application of geotechnical engineering principles and is able to call on extensive IT and library resources.

Its Geoenvironmental department provides advice in relation to the assessment of brownfield sites and land which may be contaminated and on means of remediation, where appropriate.


Eurocode 7

Geotechnics Limited recognises the changes that were implemented by the introduction of Eurocodes into UK design on 31 March 2010 and has invested in equipment and methodologies required by the new standards. This should lead to higher quality sampling and more accurate testing, associated with an internationally standardised description system.

However, we believe that the principal factor in ensuring excellence in site investigation is in the quality of the engineering design, supervision, control and interpretation process rather than simply the equipment used. We consider that the onus is on the designer of a site investigation to specify the quality of samples and types of tests that they require, and to take account of the available sampling methods for the anticipated ground conditions.


Brownfield Sites

A brownfield site is typically land that has previously been developed, usually for industrial purposes, and frequently there is pressure from the planning system to prioritise its development. They present significant opportunities but they have to be judged in the context of liabilities. Brownfield sites can have high value in terms of:

  • Availability of communications
  • Proximity to existing infrastructure and employment centres
  • Meeting planning guideline criteria
  • Protection of greenfield sites

Contamination

In terms of current legislation, land is deemed to be contaminated where substances on or within it are at such a concentration that there is a significant possibility of significant harm to:

  • Humans
  • Controlled waters
  • The environment
  • Buildings or services

Geotechnics Limited uses the currently approved Source - Pathway - Receptor methodology in combination with current UK exposure models such as CLEAUK to assess contamination risks and suggest possible remediation methods.