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Phase II Geoenvironmental Site Investigation
Where a Phase I desk study identifies the requirement for further investigations on a site, a Phase II intrusive site investigation is usually recommended. The investigations are usually designed as a combination of geotechnical and contaminated land assessments, in order to support planning applications or to discharge planning or building conditions.
The purpose of a Phase 2 Site Investigation is to physically inspect the condition of the soil, groundwater and surface water that may have been impacted by the sources of contamination identified in the Phase I Desk Study.  The Phase II investigation is site specific with the method(s) of investigation chosen being dependent on a number of factors, such as access, operational constraints, geology, potential contaminant sources and the receptors to be targeted (e.g. shallow soils, groundwater). 
The services we offer as part of a Phase II investigation include: 
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Geotechnical and environmental site investigation design. 
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Hand excavated pits and hand augering. 
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Machine excavated trial pits using a hydraulic excavator. 
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Windowless sample boreholes with soil sampling. 
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Cable percussive boreholes with soil sampling. 
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Rotary boreholes and rock core logging. 
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Mining investigations. 
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Geophysical surveys. 
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In situ and laboratory geotechnical testing. 
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Generic Quantitative Risk Assessment (GQRA) of soil and groundwater. 
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Detailed Quantitative Risk Assessment (DQRA) of soil and groundwater. 
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Ground gas monitoring and risk assessment to BS8485:2015+A1:2019 
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Groundwater modelling. 
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Interpretative report writing with geotechnical and environmental recommendations. 





