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CEMEX Construction Materials South,LLC Table 1 Quarterly Report Y21 02 <br /> Moning Permit M1977-208 Summary of Analytical Results <br /> Lyons Quarry <br /> C-Pit CEM-001 CEM-004 CEM-005 CEM-004,CEM-005 <br /> Triggers(TR-12) <br /> 2020 Q3 2020 Q4 2021 Q1 2021 Q2 2020 Q3 2020 Q4 2021 Q1 2021 Q2 2020 Q3 2020 Q4 2021 Q1 2021 Q2 2020 Q3 2020 Q4 2021 Q1 2021 Q2 <br /> Parameter Units <br /> 8/25/2020 11/2/2020 3/2/2021 5/17/2021 9/25/2020 11/2/2020 3/2/2021 5/17/2021 8/25/2020 11/2/2020 3/2/2021 5/17/2021 'See dates 'See dates 'See dates 'See dates <br /> below below below below <br /> value value value value value value value value value value value value value value value value <br /> pH(On-site) Su 10.52 22.2.6 12.43 11.46 7.98 8.2 7.81 7-74 796 7.94 7.23 7 46 6.5-8.5 <br /> Chloride mg/L 1700 1520 1650 1470 1710 1780 i88o 1830 1.8 6 40.5 9.6 1,053 <br /> Sulfate mg/L 266o 2180 1900 1610 21 23.9 H 15.8 32-9 75 22.5 242 17.3 2,641 <br /> nsufficient insufficient water insufficient insufficient <br /> water to to sample water to sample water to sample <br /> Total Dissolved sample sot-10,000 or 1.25 times <br /> Solids mg/L 8980 7850 8720 7350 4250 396o 4530 4290 99 118 487 114 background <br /> Selenium mg/L 0.288 0.349 0.407 0.421 <o.0008 <0.0008 0.0462 <0.005 U 0.0012 0.0008 0.0011 <0.005 U o.o5 <br /> Thallium mg/L 0.0010 0.0010 0.0017 <0.004 U <0.0004 <0.0004 <0.0004 <0.004 U <0.0004 10.0004 <0.0004 <0.004 U 0.002 <br /> Notes and Qualifiers: <br /> H Sample analyzed beyond recommended hold time <br /> u Detection limit is estimated <br /> ui Estimated low <br /> x Data may not be representative due to nonstandard field sampling protocol <br /> NA Not analyzed. <br /> value Exceeds trigger <br /> a CEM 005 Yzo 03 Well Sounding:8125/2020 <br /> a CEM 005 Y2o Q4 Well Sounding:1113/2020 <br /> a GEM 005 Yet Q1 Well Sounding:3/2/2021 <br /> 'CEM oo5 Y21 QiWell Sounding:5/17/2021 <br /> 2021_C-Pit_Sampling_Results_Q2.1dsx 1 of 1 <br />