Extracted text: The Different Stages of Site Investigation A site investigation is undertaken to comply with Repulatory requirements (necessany) and to minimise exponure to risk (desirable). Traditionaly there are six stages to a typical site imvestigation: • Desk Study. • Site Reconnaisance, • Site Exploration and Sampling • Field Test/in-situ Test. • Laboratory Testing and • Report Writing. Here we explore each of these phases in more depth as well as new ways the process could potentially be beoken dewn. 1. Desk Study or Phase I Geo-Environmental Assessment This is the preliminary stage of the site investigation and comprises the serutiny of a wide variety of colletive informaticn souroes relating to the site such as historical maps, drawings. kocal wathority information, published grology. hydrogology, hydrology, envinonmental, mining, and unexpioded ordnance, Where available, statutory services information may also be included. The information gathered is then used to construct a ground and conceptual site model (CSM) follosed by an environmental and gootechnical risk assessment. The Dosk Study provides the framework and scope for the neat stages of site investigation wbere required. 2. Site Reconnaissance The initial phase (preliminary imestigation) imebes early examination of the site by specialists. Information is collected daring a site walkover survey to acknowledge possible site sestrictions relating to the, serrain, existing structures, utilities, environmental, seasonal and ccological constraints. The condition of land surrounding the subject site are also considered. Local conditions noted at this stage wl help generate an adequate exploration design and prepare for the future intrusive grond investigations. Photograpes will be taken at this stage asa record of the site details during the initial walkover survey. 3. Site Exploration & Sampling Next a more detailed ground imvestigation is carried out to establish the general gological, hydrogoolopical and subsurtace scil conditions. Compechensive
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