Table 4.

Matrix for combining likelihood and consequences (adapted from [36]).

		Consequences
		Insignificant	Very minor	Minor	Moderate	High	Catastrophic
Likelihood	High	N	VL	L	M	H	E
	Moderate	N	VL	L	M	H	E
	Low	N	N	VL	L	M	H
	Very low	N	N	N	VL	L	M
	Extremely low	N	N	N	N	VL	L
	Negligible	N	N	N	N	N	VL

N = Negligible risk; VL = Very low risk; L = Low risk; M = Moderate risk; H = High risk; E = Extreme risk.