Survey and Risk Assessment of Contaminants in Soil from a Nitrogenous Fertilizer Plant Located in North China

Table 2

Soil layers and depth.

Layer	Soil	Depth (m)
1	Silt	0–4.5
2	Clay	4.5–6.5
3	Silt	6.5–10
4	Silt	10–15
5	Silt	15–20
6	Silt	25–30