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Table 6.Logan Wash Mine Retort Water Analytical Data <br /> SamplelD LW-RETORT LW-RETORT LW-RETORT LW-RETORT LW-RETORT LW-RETORT LW-RETORT LW-RETORT LW-RETORT LW-RETORT <br /> SampleDate 5/11/2011 10/19/2011 6/14/2012 10/24/2012 5/28/2013 10/24/2013 5/21/2014 10/22/2014 5/12/2015 10/14/2015 <br /> Parameters Units <br /> General Chemistry <br /> Alkalinity,Bicarbonate(as CaCO3) mg/L 515 440 470 410 J 420 540 690 580 B 410 370 B <br /> Alkalinity,Carbonate(as CaCO3) mg/L 33.3 70 46 61 J 59 45 120 5 U 100 76 <br /> Alkalinity,Total(As CaCO3) mg/L 572 510 520 470 J 480 590 810 580 B 520 440 B <br /> Ammonia mg/L 3.8 3.1 3.6 2.8 J 2.8 4.8 5.7 3.2 2.8 2.6 <br /> Bromide mg/L 1 U 2 U 1 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 5 U <br /> Chemical Oxygen Demand(COD) mg/L 150 120 110 120 J 100 190 380 750 50 81 <br /> Chloride mg/L 87.3 68 85 75 80 94 98 96 84 67 <br /> Conductivity umhos/cm 10000 12000 11000 13000 J 9900 8800 8300 8700 8500 8700 <br /> Cyanide(free) mg/L --- --- --- --- --- --- --- <br /> Fluoride mg/L --- --- --- --- --- --- --- --- --- --- <br /> Fluoride(dissolved) mg/L 12 10 9.9 10 9.7 10 14 10 10 8.7 <br /> Hardness mg/L 400 300 330 330 320 370 410 400 330 340 <br /> Nitrate(as N) mg/L 0.25 U 0.5 U 0.25 U 1 U J 0.5 U 0.5 U 0.5 U 0.035 J 0.64 1 U <br /> Nitrite(as N) mg/L 2.5 U 0.5 U 0.25 U 0.25 U J 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.5 U <br /> Oil and Grease,Total mg/L --- --- --- --- --- --- --- 560 --- --- <br /> Oil and grease(HEM),polar mg/L --- 22 10 5 J 4.7 U 20 14 --- 3.41 1.6 J <br /> Oil and grease(HEM),total mg/L 558 --- --- --- -- <br /> --- --- --- --- --- <br /> pH S.U. 8.5 J 8.26 J 8.53 J 8.76 J 8.16 J 8.48 J 8.46 J 8.62 HF 8.44 J 8.74 HF <br /> Phenolics(Total) mg/L 0.1 0.06 0.066 0.071 J 0.044 0.18 0.25 0.11 0.033 0.058 <br /> Phosphorus as P,total mg/L 0.031 J 0.1 U 0.045 J 0.038 J 0.058 J 0.075 J 0.11 1.2 0.056 J 0.077 J <br /> Silica mg/L --- --- --- --- --- --- --- --- --- --- <br /> Sulfate mg/L 3820 3600 3700 3600J 3900 4000 3300 4100 4200 3500 <br /> Sulfide mg/L 18.5 46 20 201 46 58 110 3 U 46 46 <br /> Sulfite mg/L --- --- --- --- --- --- -- <br /> Thiocyanate mg/L --- --- --- --- --- --- --- --- --- --- <br /> Thiosulfate mg/L --- --- --- --- --- --- --- --- --- --- <br /> Total Dissolved Solids(TDS) mg/L 1520 6900 6500 6000 J 6100 5800 5800 6500 7100 7100 <br /> Nitrogen,Total Kjeldahl mg/L 11.5 4.6 J 5.6 5.0 J 5.1 6.8 12 15 4.9 J 3.9 J <br /> Total Organic Carbon(TOC) mg/L 21.7 20 20 17 J 13 24 27 2.6 19 19 <br /> Total Suspended Solids(TSS) mg/L 4 U 16 4 U 4 U J 2 U 7.2 22 1500 --- --- <br /> Dissolved Organic Carbon(DOC) mg/L 20.6 19 17 17 J 17 24 25 19 20 19 <br /> Page 7 of 9 <br />