Table 5. Summary of results for all the studied metals.

Element	Deposit status	ACF ≤ 0 (no intervention)	0 < ACF < 2 (conditional intervention)	ACF ≥ 2 (unconditional intervention)	Total
As	Active	10	1	0	11
	Inactive	18	0	4	22
	Abandoned	48	0	0	48
Cd	Active	9	2	0	11
	Inactive	10	12	0	22
	Abandoned	30	18	0	48
Pb	Active	11	0	0	11
	Inactive	18	4	0	22
	Abandoned	48	0	0	48
Ni	Active	0	11	0	11
	Inactive	0	22	0	22
	Abandoned	0	48	0	48
Hg	Active	10	1	0	11
	Inactive	20	2	0	22
	Abandoned	39	8	1	48
Cu	Active	0	2	9	11
	Inactive	0	6	16	22
	Abandoned	1	8	39	48
Zn	Active	10	1	0	11
	Inactive	18	4	0	22
	Abandoned	48	0	0	48
Cr	Active	1	10	0	11
	Inactive	6	10	6	22
	Abandoned	13	35	0	48
Total					648

Note:

This table presents the information regarding to the necessity of intervention results for the tailings according to the adjusted threshold factor for the different metals grouped by tailing deposit status (active, inactive, or abandoned).