Environmental investigations are used to confirm the presence or absence of contamination in the ground. They usually include a history of the site before planning the investigation programme. The mapping is done by taking samples of the soil, groundwater and sediments and by doing chemical analyses of soil, water and air.

NGI has the expertise to do site investigations of for example harbours, airports, industrial areas, old fills, waste disposal sites, rifle ranges, and industrial land to be rehabilitated into housing complexes.


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