Obtaining a representative sample is therefore important (see Section 3.2 above) The tools required for sampling include an auger, a spade and a trowel.For shallow sampling of disturbed material, a trowel is sufficient to gather material. Once obtained, it should be placed in a polythene bag, sealed and clearly labelled with a permanent marker pen. Deep sampling can be carried out either by using augers or spades, by utilizing trenches and road banks, or by digging soil pits and exposing soil profiles.