Site investigations are commonly required for the following scenarios;
- Site Pre-Purchase Due Diligence Studies
- Slope Stability Assessments
- Contaminated Land Assessment
- Foundation Design
- Subsidence Surveys
- PartIIa Investigation
- Environmental Monitoring
- Insurance Claims
- Asset Surveys
- Mining Survey
- Relict foundation and obstruction assessment
- Ground Improvement Design
- Remediation Design and Validation
- Asbestos Soil Risk Assessment
- Environmental Management Audit
Subsurface site investigations are routinely conducted as part of the assessment of the GeoEnvironmental status of a site including any landfill/ground gas issues, soil/groundwater contamination, assessment of mineworkings, hydrogeology, slope stability assessment or to examine geotechnical conditions for a new structure or landform.
Any site investigation should ideally follow the development of a site walkover survey and desk based study (Phase I Desk Study) using readily available publically archived information (historical, environmental, mining etc) that allows for a cost effective strategy to be implemented. The defined scope of work within any preliminary investigation is paramount for a successful project to be completed, the old adage “you pay for a site investigation whether you have one or not”, is commonly quoted to clients!
All site investigations are conducted in accordance with strict and well defined health and safety practices with site specific method statements and risk assessments provided. Prior to commencement on site service (gas sewers, electricity etc.) information is acquired from the client (or its agents) with utility tracing conducted, if required.
Many site investigations are conducted to discharge planning conditions and our staff always ensure, time permitting, that prior to delivery of a costed proposal an outline of the proposed works are initially discussed with the regulatory authorities.
Our staff have extensive experience in the design of geotechnical, mining and environmental site investigations in accordance with current best technical practices and planning guidance.
In-house drilling rigs are wherever possible used for drilling work, with approved quality sub-contractors used for projects (where necessary).
Examples of sites we have investigated are:
Fuel Retailing Facilities as part of portfolio divestment strategies and planned re-development.
- Unlicenced tips with ground gas and contamination issues
- Victorian housing estates
- Brewaries and alcohol distillery facilities
- Cotton mills with gasometers and infilled reservoirs
- Infilled canal sites with contaminated sediments
- Bleach works
- Ship building yards
- Bulk fuel depots and blending facilities with oil spills and offsite impacts.
- Greenfield sites with poor ground conditions associated with compressible soils and settlement issues. Former animal burial sites and fuel storage facilities within agricultural holdings.
- Former colliery sites with mine shafts, bell pits, adits and shallow pillar and stall workings beneath proposed development.
- Railway cuttings and embankments with slopes stability issues associated with relict geological slip surfaces and impacted by vegetation together with nearby construction activities.
- Landfill sites for assessment of hydrogeological risk assessment, gas migration studies, installation of monitoring boreholes, evaluation of settlement characteristic’s for surface structures on waste mass, design of earthworks and use of lining materials.
- Quarries as part of reserve assessment, hydrogeological and slope stability assessments.
- Foundries where tipping and waste handling practices have posed soil, ground gas and ground gas contaminations issues to wider environment and proposed end use.
- Scrap yards with deleterious materials, PCB, oil, asbestos and metal contamination.
- Tannery sites with potential pathogens, asbestos, metals, sludges and heavily impacted drainage system.
- Gas manufacturing works site with a wide range of contamination issues associated with former gas production.
- Ministry of Defence facilities including bases, airfields and weapons manufacturing complexes.
- Existing and proposed Cemeteries for assessment of risk posed to environment including hydrogeological assessment.
- Council owned allotments with legacy of contamination associated with ash based soil conditioner and hydrocarbon spillages.
- Chemical works including agrochemical plants, aniline works, tar distilleries, battery works.
- Sewage works where historic practices have resulted in sewage sludges being deposited on site
Earth Environmental & Geotechnical conduct site investigations in accordance with Eurocodes that were introduced into UK design on 31 March 2010 and has invested in equipment and methodologies demanded by the standards. We however believe that high quality site investigations arise as a result of the design, supervision, monitoring and interpretation process rather than the field equipment used.