Risk Assessment of Groundwater Contamination: A Multilevel Fuzzy Comprehensive Evaluation Approach Based on DRASTIC Model

Table 8

Membership function of soil media (𝑆).

No.	Membership degree
1	(0, 0, 0, 0, 1)
2	(0, 0, 0, 0, 1)
3	(0, 0, 0, 0, 1)
4	(0, 0, 0, 0, 1)
5	(0, 0, 0, 1, 0)
6	(0, 0, 0, 1, 0)
7	(0, 0, 1, 0, 0)
8	(0, 1, 0, 0, 0)
9	(0, 1, 0, 0, 0)
10	(1, 0, 0, 0, 0)
11	(1, 0, 0, 0, 0)