Site investigations of varying detail will be required by local planning authorities as supporting evidence for planning applications where land is potentially contaminated. Usually this will take the form of a desktop, or preliminary, study.

Successful planning applications will have conditions attached requiring much more thorough site investigations are carried out where the local authority believes there is a reasonable risk contamination is present in order to establish whether an actionable problem exists, and if so the type, scale and severity of contamination.

This topic describes a site investigation, the process and techniques.

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