ABSTRACT
This chapter describes the information that needs to be gathered to allow the design of groundwater lowering systems. Good practice in the planning and execution of site investigations is outlined, together with brief details of methods used for boring, drilling, probing, testing, etc. The chapter deals with the site investigation requirements for groundwater control projects. Site investigation (also known as geotechnical investigation) is the essential starting point, without which the design of any construction or geotechnical process cannot progress. Groundwater lowering is no exception to this rule. All site investigations need to be planned and designed in order that they will provide the information needed by the various designers, estimators and construction managers. A conceptual model is a non-mathematical representation of ground and groundwater conditions that is used to help understand and communicate geotechnical and hydrogeological conditions at a site.
