Desk studies for The Christie NHS Foundation

Starting in June 2019, RSK, as part of a wider contractor delivery team, prepared and completed a multiple phase £100,000 project for the Christie NHS Foundation Trust, Manchester, UK. The phase 1 desk study involved several services offered by RSK including; reviewing the history of The Christie Hospital site’s development and surroundings, studying the historical Ordnance Survey mapping and other historical sources using an environmental database report; assessing the local geology, hydrogeology and surface water setting, including identifying potential geological hazards such as mining; completing a site reconnaissance survey to assess the site’s visual condition; developing an initial conceptual site model (CSM) identifying potential contaminant linkages, completing a preliminary risk assessment and identifying key uncertainties and assumptions in the CSM; considering the geotechnical constraints and hazards; and identifying the need for further action.

The desk study identified the need for an intrusive investigation to determine the underlying geology at the site, analyses of soil and groundwater, and monitoring for ground gas and groundwater. The client accepted our recommendations and commissioned us to undertake two phases of ground investigation.

RSK specialists completed the initial phase of the site investigation involving window sampling boreholes during the summer of 2019. Our analysis confirmed underlying superficial deposits and made ground. We completed two subsequent comprehensive investigations that included techniques such as cable percussive, rotary and machine excavation for soakaway tests. As the Christie is an active hospital, RSK advised on modifying the investigation techniques to minimise the impact of the work. After completing the investigations, we advised the client on geoenvironmental and geotechnical considerations, including appropriate concrete specifications, and confirmed that the tested soil was suitable for disposal as non-hazardous.

The project not only showcases RSK’s skills in working directly with NHS clients and a wider diverse delivery team but is also an excellent example of how the quality of RSK’s performance built trust and a good relationship with the client subsequently leading to further work. Throughout the project, we responded professionally to changes in design, prepared revisions efficiently and, most importantly for the client, delivered on budget and programme.