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TABLE 3A:GROUNDWATER SAMPLE FIELD PARAMETERS <br /> Field Parameters <br /> Location ID/ Sample Date <br /> Sample ID3 p Static Depth to pit(unitless) Temperature Conductivity ORP(mV) Dissolved Notes/Location Description <br /> Water Ubtuc (`C) <br /> M W-00 06/16/2021 8.17 6.91 b 246.6 109.2 6.74 Alluvial well.Above waste dumps,upstream of site. <br /> M W-0 06/16/2021 8.01 6.84 8.3 274.7 104.4 3.37 Alluvial well.Toe of south waste rock pile. <br /> MW-6 06/01/2021 2.9 7.32 10 527 94.7 5.61 Alluvial well.Near former Sump#2. <br /> M W-7 06/01/2021 6.1 6.84 11 734 170.7 US Alluvial well.Near Sump#1.This sample was a grab sample was taken 24 hours after the first <br /> attempt to sample during which the well ran dry while purging. <br /> MW-12 06/01/2021 15 6.96 9.8 360.1 185.1 5.34 Below Sump#1.Alluvial well. <br /> MW-13 06/09/2021 443.S5 7.94 9.4 310.5 -16.8 2.47 Nitrogen purge.Replaced M W-10.Previous Sample ID=Lt.Background well. <br /> MW-14 06/09/2021 74.73 7.53 9.S 192.2 -121.9 1.05 Nitrogen purge.Replaced M W-11. Previous Sample ID=L2.Background well. <br /> MW-15 06/09/2021 109.1 8.64 11.5 741 -313.7 0.91 Nitrogen purge.Previous Sample ID=L3.Bedrock well. <br /> MW-16 Not Sampled I Previous Sample ID=L4.Bedrock well.No sample required. <br /> MW-17 Not Sampled Nitrogen purge.Previous Sample ID=I.S. <br /> MW-18 06/08/2021 182.13 7.86 11.9 715 -128 1.23 Previous Sample ID=L6.Bedrock well,installation targeted Illinois fault zone in alluvial valley. <br /> MW-19 06/01/2021 12.98 6.82 8.9 354.6 116.1 3.12 Toe of south waste rock pile.Previous Sample ID=L7. <br /> MW-20 Not Sampled -- -- -- Usually dry.Top of south waste rock pile. <br /> Raw Feed 06/Ol/2021 6.84 19.1 3351 -157.9 2 46 Sample collected from spigot inside water treatment plant This is the water treatment plant intake <br /> from the mine pool.Previous Sample ID=Mine Refill. <br /> Sumps 06/01/2021 6.67 12.9 860 91.5 S.41 Sample collected from sump water from Sump#1(Master Sump). <br /> Notes: <br /> Water present in well was dry or insufficient volume to collect sample. <br /> 'Well was not accessible. <br /> 3MW-I,MW-2,MW-3A,and MW-8 were removed in 2019;MW-4 and MW-5 were removed in 2008.MW-8 was replaced with MW-12.MW-10 and MW-11 were fouled(bentonite in screened interval)and replaced with MW-13 and MW-14. <br /> pS/cm=microSemiens per centimeter <br /> °C=degrees Celsius <br /> It btoc=feet below top of casing <br /> ID=Identifier <br /> mg/L=milligrams per liter <br /> my=millivolts <br /> MW=Monitoring Well <br /> ORP=Oxidization Reduction Potential <br /> PACE 10 of 16 <br />