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Elkview Operations Saturated Rock Fill performance

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Elkview Operations Saturated Rock Fill performance summary table

Date:Jan-22
Throughput (m3/day):16,528
Availability (%):98.9
Effluent Nitrate Concentration (mg/L):0.88
Daily Average Nitrate Load Removal (kg/day):286
Nitrate Load Removal (Total) (kg):8,851
Effluent Selenium Concentrations (µg/L):8.47
Daily Average Selenium Load Removal (kg/day):2.71
Selenium Load Removal (Total) (kg): 84
Date:Feb-22
Throughput (m3/day):15,620
Availability (%):97.2
Effluent Nitrate Concentration (mg/L):0.82
Daily Average Nitrate Load Removal (kg/day):288
Nitrate Load Removal (Total) (kg):8,072
Effluent Selenium Concentrations (µg/L):8.28
Daily Average Selenium Load Removal (kg/day):2.57
Selenium Load Removal (Total) (kg): 72
Date:Mar-22
Throughput (m3/day):13,038
Availability (%):87.2
Effluent Nitrate Concentration (mg/L):0.65
Daily Average Nitrate Load Removal (kg/day):247
Nitrate Load Removal (Total) (kg):7,652
Effluent Selenium Concentrations (µg/L):5.62
Daily Average Selenium Load Removal (kg/day):2.38
Selenium Load Removal (Total) (kg): 74
Date:Apr-22
Throughput (m3/day):7,367
Availability (%):96
Effluent Nitrate Concentration (mg/L):0.31
Daily Average Nitrate Load Removal (kg/day):177
Nitrate Load Removal (Total) (kg):5,311
Effluent Selenium Concentrations (µg/L):3.9
Daily Average Selenium Load Removal (kg/day):1.21
Selenium Load Removal (Total) (kg): 36
Date:May-22
Throughput (m3/day):8,475
Availability (%):95
Effluent Nitrate Concentration (mg/L):0.22
Daily Average Nitrate Load Removal (kg/day):221
Nitrate Load Removal (Total) (kg):6,796
Effluent Selenium Concentrations (µg/L):2.63
Daily Average Selenium Load Removal (kg/day):1.32
Selenium Load Removal (Total) (kg): 40
Date:Jun-22
Throughput (m3/day):9,365
Availability (%):97
Effluent Nitrate Concentration (mg/L):0.22
Daily Average Nitrate Load Removal (kg/day):229
Nitrate Load Removal (Total) (kg):6,871
Effluent Selenium Concentrations (µg/L):2.39
Daily Average Selenium Load Removal (kg/day):1.37
Selenium Load Removal (Total) (kg): 41
Date:Jul-22
Throughput (m3/day):8,901
Availability (%):92
Effluent Nitrate Concentration (mg/L):0.19
Daily Average Nitrate Load Removal (kg/day):218
Nitrate Load Removal (Total) (kg):6,743
Effluent Selenium Concentrations (µg/L):2.24
Daily Average Selenium Load Removal (kg/day):1.37
Selenium Load Removal (Total) (kg): 42
Date:Aug-22
Throughput (m3/day):9,504
Availability (%):98
Effluent Nitrate Concentration (mg/L):0.17
Daily Average Nitrate Load Removal (kg/day):230
Nitrate Load Removal (Total) (kg):7,121
Effluent Selenium Concentrations (µg/L):1.97
Daily Average Selenium Load Removal (kg/day):1.41
Selenium Load Removal (Total) (kg): 44
Date:Sep-22
Throughput (m3/day):8,730
Availability (%):91
Effluent Nitrate Concentration (mg/L):0.18
Daily Average Nitrate Load Removal (kg/day):217
Nitrate Load Removal (Total) (kg):6,501
Effluent Selenium Concentrations (µg/L):1.83
Daily Average Selenium Load Removal (kg/day):1.28
Selenium Load Removal (Total) (kg): 38
Date:Oct-22
Throughput (m3/day):9,628
Availability (%):89.5
Effluent Nitrate Concentration (mg/L):0.24
Daily Average Nitrate Load Removal (kg/day):185
Nitrate Load Removal (Total) (kg):5,745
Effluent Selenium Concentrations (µg/L):1.57
Daily Average Selenium Load Removal (kg/day):1.42
Selenium Load Removal (Total) (kg): 44
Date:Nov-22
Throughput (m3/day):14,708
Availability (%):98.5
Effluent Nitrate Concentration (mg/L):0.16
Daily Average Nitrate Load Removal (kg/day):311
Nitrate Load Removal (Total) (kg):9,340
Effluent Selenium Concentrations (µg/L):1.89
Daily Average Selenium Load Removal (kg/day):2.40
Selenium Load Removal (Total) (kg): 72
Date:Dec-22
Throughput (m3/day):15,305
Availability (%):98
Effluent Nitrate Concentration (mg/L):0.11
Daily Average Nitrate Load Removal (kg/day):332
Nitrate Load Removal (Total) (kg):10,292
Effluent Selenium Concentrations (µg/L):1.94
Daily Average Selenium Load Removal (kg/day):2.64
Selenium Load Removal (Total) (kg): 82
Date:Average
Throughput (m3/day):11,431
Availability (%):95
Effluent Nitrate Concentration (mg/L):0.35
Daily Average Nitrate Load Removal (kg/day):245
Nitrate Load Removal (Total) (kg):7,441
Effluent Selenium Concentrations (µg/L):3.56
Daily Average Selenium Load Removal (kg/day):1.84
Selenium Load Removal (Total) (kg): 56
*The Elkview Operations Saturated Rock Fill started forward flow treatment of Erickson Creek on February 15, 2021.
April through September 2022 availability for Natal Pit only, as Erickson Creek source was offline during this period.

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