99
Table 7.2 Water impact categories. A comparison of gold processes: alluvial, open-pit mining, and mining systems from Ecoinvent 3.1. database
Damage
categories
Impact
categories
Alluvial mining
technology
Open-pit mining
technology
Ecoinvent 3.1. database
Peru
Ecoinvent 3.1. database
Papua New Guinea
Ecoinvent 3.1.
database ROW
Normalized
values
Normalized
values
Normalized
values
Normalized
values
Normalized
values
Ecosystem
(water)
Freshwater
ecotoxicity (kg
1,4-DB eq/
year)
1.29E+01 3.01E+00
7.39E+04 1.72E+04
1.41E+04 3.28E+03
6.33E+03 1.47E+03
1.24E+04 2.89E+03
Freshwater
eutrophication
(kg P-eq /m
3
)
4.20E-02 1.45E-01
4.94E+02 1.71E+03
3.80E+02 1.31E+03
1.70E+02 5.87E+02
3.24E+02 1.12E+03
Marine
ecotoxicity (kg
1,4-DB eq/
year)
1.14E+01 4.63E+00
2.11E+04 8.57E+03
1.25E+04 5.08E+03
9.07E+03 3.68E+03
1.18E+04 4.79E+03
Marine
eutrophication
(kg N-eq/m
3
)
3.94E-01 5.37E-02
8.55E+01 1.16E+01
1.06E+02 1.44E+01
1.20E+02 1.64E+01
1.26E+02 1.72E+01
Water
depletion (m
3
/
year)
1
2.82E+04
4.91E+02
1.89E+01
1.23E+03
1.34E+02
7 SDG 6 Clean Water and Sanitation