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�OLORADO LEGACY LAND <br /> TABLE 2A:SURFACE WATER SAMPLE FIELD PARAMETERS <br /> Elevation' Field Parameters <br /> Location ID/ ft above <br /> ( Sample Date Dissolved Notes Description <br /> Sample ID Flowrate pH Temperature Conductivity ORP /Location <br /> mean sea Oxygen <br /> (ft3/s) (unitless) (°C) (PS/cm) (m <br /> level om m L <br /> SW-AWD 6,636.37 03/02/2022 0.33 8.61 1.2 207.8 75.1 11.93 Upstream sample location. Above waste dump (AWD).Onsite. <br /> SW-NWRP 6,626.91 03/02/2022 1.7 8.20 2.5 218.3 54.0 11.85 Downstream of the North Waster Rock Pile (NWRP). <br /> SW-A001 6,603.98 Not Sampledz -- -- -- -- -- -- Above former discharge point.Onsite.Directly below the west waste rock pile. <br /> SW-BDIS 6,592.67 Not Sampledz Below former discharge(BDIS).Onsite.Below former concrete containment structure. <br /> SW-PL 6,583.53 Not Sampledz Former parking lot(PL)location.Onsite. <br /> SW-OS 6,562.51 Not Sampled' Former ore sorter(OS)location.Onsite. <br /> SW-BOS 6,556.19 Not Sampledz Below former ore sorter(BOS) location. Onsite. <br /> SW-GS 6,545.54 Not Sampledz -- -- -- -- -- -- Former guard shack(GS)location.Onsite. <br /> SW-BPL 6,522.53 03/02/2022 1.8 8.29 3.3 222.0 80.04 11.39 Below property line (BPL). Downstream sample location,just below entrance gate.Offsite. <br /> SW-FBRG 6,489.65 Not Sampledz -- -- -- -- -- -- First bridge (FBRG) after leaving site.Offsite. <br /> SW-ARH 6,364.04 03/02/2022 4.4 8.53 3.2 242.1 127.0 11.71 Above red hill (ARH). Near the large red boulders in the creek bed.Offsite. <br /> SW-LLHG 6,158.46 03/02/2022 0.57 8.27 3.1 244.2 162.6 11.71 Long lake head gate (LLHG). Just above head gate.Offsite. <br /> SW-WEIR 6,069.11 03/02/2022 0.11 8.12 3.5 286.7 214.2 10.13 Weir structure before Ralston Reservoir Offsite. <br /> Citation: <br /> 1 Locations surveyed by Lambert Land Consulting on 7/23/2020. <br /> Notes: <br /> 2 Access was prohibited by snow during the March sampling attempt. <br /> µS/cm=microSiemens per centimeter <br /> °C=Degrees Celsius <br /> ft3/s=Cubic feet per second <br /> kg/day= Kilogram per day <br /> mg/L=Milligrams per liter <br /> my=Millivolts <br /> ORP=Oxidization Reduction Potential <br /> PAGE 7 OF 17 <br />