Table 1.

Intake (default) parameters for adult ASGM miners used in the human health risk assessment from the RISC 4.02 software [23,25].

Parameter	Central Tendency Exposure (CTE)				Reasonable Maximum Exposure (RME)
	As	Cd	Pb	Hg	As	Cd	Pb	Hg
Averaging Time (Life time)/years	70	70	70	70	70	70	70	70
Body Weight/kg	58.6	58.6	58.6	58.6	58.6	58.6	58.6	58.6
Oral Exposure Frequency for sediment (events/year)	40	40	40	40	350	350	350	350
Dermal Exposure Duration for sediment (year)	9	9	9	9	30	30	30	30
Oral Exposure Frequency for water (events/year)	40	40	40	40	350	350	350	350
Oral Exposure Duration for water (year)	9	9	9	9	30	30	30	30
Ingestion rate for water (L/day)—IRwo	2	2	2	2	6	6	6	6
Ingestion rate for sediment (mg/day)—IRsed	40	40	40	40	100	100	100	100
Total skin surface area (cm2)—SA	18,400	18,400	18,400	18,400	23,000	23,000	23,000	23,000
Fraction of skin exposed to sediment (unitless)	0.11	0.11	0.11	0.11	0.25	0.25	0.25	0.25
Sediment-skin adherence factor (mg/cm2)	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2
Oral cancer slope factor (1/mg/kg—day)	1.5	0.014	-	-	1.5	0.014	-	-
Dermal cancer slope factor (1/mg/kg—day)	1.5	0.014	-	-	1.5	0.014	-	-
Oral reference dose (mg/kg—day)	0.0003	0.0005	0.0036	0.0003	0.0003	0.0005	0.0036	0.0003
Dermal reference dose (mg/kg—day)	0.0003	0.0005	0.0036	0.0003	0.0003	0.0005	0.0036	0.0003
Oral-sediment absorption adjustment factor (unit less)	1	1	1	1	1	1	1	1
Dermal-sediment absorption adjustment factor (unit less)	0.03	0.001	0.01	0.1	0.03	0.001	0.01	0.1
Oral-water absorption adjustment factor (unit less)	1	1	1	1	1	1	1	1
Dermal-water absorption adjustment factor (unit less)	1	1	1	1	1	1	1	1
Skin permeability coefficient (cm/hr)	0.001	0.001	−	0.0017	0.001	0.001	−	0.0017