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DocuSign Envelope ID: D07924E6-3D94-4398-A066-B683COBAB33E <br /> February 24,2021 <br /> Angela Aalbers,Chantell Johnson <br /> Page 8 of 12 <br /> Reference: Biological Sulfate Reduction Bench-Scale Test Results-Revision 1 <br /> Table 6 - Field Analytical Summary (2x Test)from November 12, 2020 <br /> Parameter Effluent luent Addbkcfluent <br /> ORP(mV) -233 -241 -201 <br /> pH 8.43 8.64 8.86 <br /> TDS(mg/L) 2,119 2,158 2,723 <br /> Sulfate(mg/L) 1065 606 471 <br /> Mn (mg/L) 2.74 16.1 9.5 <br /> Table 7 - Field Analytical Summary (1x Test)from November 12, 2020 <br /> To'rumn �� o <br /> umn <br /> Parameter Effluent Effluent Effluent <br /> ORP(mV) -219 -206 -187 <br /> pH 8.01 8.36 8.39 <br /> TDS(mg/L) 2,125 2229 2216 <br /> Sulfate(mg/L) 1,481 1008 872 <br /> Mn (mg/L) 9.7 1.3 1.4 <br /> Table 8 - Laboratory Analytical Summary from November 11 and 12, 2020 <br /> Parameter Ill] UMI 1 . 1 4 Effluent 3 Effluent 3 Effluent <br /> Ca(mg/L) 133 65.4 47.1 77.9 113 <br /> Mg(mg/L) 119 114 115 113 113 <br /> Na(mg/L) 764 752 758 748 761 <br /> Ammonia as N (mg/L) <0.150 <0.030 <0.150 <0.150 <0.150 <br /> Total Alkalinity(mg/L as 1,030 1,170 997 1,270 1,160 <br /> CaCCt3) <br /> Bicarbonate(mg/L as 1,030 1,130 921 1,270 1,160 <br /> CaCCt3) <br /> Carbonate(mg/L as CaCO3) <1.0 39.2 75.7 <1.0 <1.0 <br /> P(mg/L) 0.019 0.052 0.045 0.075 0.15 <br /> Dissolved Carbon (mg/L) 214 223 40.9 325 124 <br /> Chloride(mg/L) 32.1 31.7 31.9 31.6 31.6 <br /> Nitrate as N (mg/L) 2.24 <0.050 <0.050 <0.050 <0.050 <br /> Sulfate as 504(mg/L) 1,650 1,140 1,420 988 1,340 <br /> Desic th community in mir <br /> dpg llus0321-ppfss01lshared_projects\233001407\reports\6_bench_scale_report\rpt_bench_scale_report_24feb2O20_final_rl.docx <br />