Table 1: Metal, nutrients and total dissolved solids (TDS) shown as nominal concentrations for the low, moderate and high exposure solutions generated using site water collected from Latte and Coffee Creeks at two times of the year.

Test Type

a) Metal Mixtures

b) Metal Mixtures + Nutrients

c) Metal Mixtures + Nutrients + TDS*

Mixture Solution

Copper
(μg/L)

Chromium
(μg/L)

Arsenic
(μg/L)

Uranium
(μg/L)

Zinc
(μg/L)

Sulphate
(mg/L)

Ammonia
(mg/L; as N)

TDS
(mg/L)

Chemical Form1

Copper Chloride Dihydrate

Ammonium Dichromate

Potassium Dihydrogen Arsenate

Uranyl Nitrate Hexahydrate

Zinc Sulphate Heptahydrate

Calcium Sulfate Dihydrate and Magnesium Sulfate Heptahydrate

Ammonium Chloride

See footnote2

Low

3.5

1.5

2

31

4

300

2

600

Moderate

3.5

1.5

5

86

8

300

2

800

High

3.5

1.5

8

100

16

300

2

1,000

Notes: 1 - Chemical forms used to prepare mixture solutions; 2 -TDS concentrations were achieved by mixing calcium chloride dihydrate, magnesium chloride hexahydrate, calcium sulfate dehydrate and magnesium sulfate heptahydrate N -Nitrogen; * Test were only performed using water collected in summer from both, Latte and Coffee creeks.