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COLORADO LEGACY LAND <br /> TABLE 1A.SURFACE WATER SAMPLE FIELD PARAMETERS <br /> Field Parameters <br /> Location ID/ Flowrate pH Temperature Conductivity <br /> Sample ID Sample Date (ft3/s) (unitless) (°C) (µS/cm) ORP(mV) Dissolved Oxygen(mg/L) Notes/Location Description <br /> SW-AWD 6/2/2020 6.17 7.87 13.4 285.0 111.4 9.32 Upstream sample location. Above waste dump (AWD).Onsite. <br /> SW-NWRP 6/2/2020 2.61 7.80 13.8 287.0 19.6 9.42 Downstream of the North Waster Rock Pile(NWRP). <br /> SW-AO01 Not Sampled,Dry' -- -- -- -- -- -- Above former discharge point.Onsite. Directly below the west waste rock pile. <br /> SW-BDIS Not Sampled,Dry' -- -- -- -- -- -- Below former discharge (BDIS).Onsite.Below former concrete containment structure. <br /> SW-PL Not Sampled,Dry' -- -- -- -- -- -- Former parking lot(PL) location.Onsite. <br /> SW-OS Not Sampled,Dry' -- -- -- -- -- -- Former ore sorter(OS)location.Onsite. <br /> SW-BOS Not Sampled,Dry' -- -- -- -- -- -- Below former ore sorter(BOS)location.Onsite. <br /> SW-GS Not Sampled,Dry' -- -- -- -- -- -- Former guard shack(GS)location.Onsite. <br /> SW-BPL 6/3/2020 4.34 7.67 12.6 279.1 62.4 9.43 Below property line(BPL).Downstream sample location,just below entrance gate.Offsite. <br /> SW-FBRG 6/3/2020 10.48 7.95 13.2 284.4 75.9 9.39 First bridge(FBRG) after leaving site.Offsite. <br /> SW-ARH 6/3/2020 5.94 8.13 14.0 298.1 83.5 9.47 Above red hill (ARH). Near the large red boulders in the creek bed.Offsite. <br /> SW-LLHG 6/3/2020 0.352 8.08 14.9 304.6 25.2 8.89 Long lake head gate(LLHG). Just above head gate.Offsite. <br /> SW-WEIR 6/3/2020 4.77 8.07 15.1 312.8 77.2 7.64 Weir structure before Ralston Reservoir <br /> Notes: <br /> 'There was no water present at these locations. <br /> 2From 2019 to present the flow was inadvertently measured outflow from head gate,not full stream.Future measurements shall reflect full stream flow at sample location. <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 4 OF 12 <br />