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December 10 , 2019 Lab ID : STK1956431 <br /> Metal Finishing Solutions , Inc . Customer : 348181 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Metals <br /> Chromium 3010 MS ug/L 40.00 91 , 6 % 75- 125 <br /> (CC 1983699-001 ) MSD ug/L 40. 00 88. 2 % 75- 125 <br /> MSRPD ug/L 40. 00 3 . 5% <20 <br /> PDS ug/L 40. 00 149 % 75- 125 430 <br /> Copper 3010 11 /09/ 19 :213120JZA Blank ug/L ND < 1 <br /> LCS ug/L 40. 00 106 % 85- 115 <br /> MS ug/L 40. 00 81 . 6 % 75- 125 <br /> (CC 1983699-001 ) MSD ug/L 40. 00 77,4 % 75- 125 <br /> MSRPD ug/L 40.00 4 .3 % <20.0 <br /> PDS ug/L 40. 00 136 % 75- 125 430 <br /> Lead 3010 11 /09/ 19 :213120JZA Blank ug/L ND <0.2 <br /> LCS ug/L 40. 00 106 % 85- 115 <br /> MS ug/L 40. 00 101 % 75- 125 <br /> (CC 1983699-001 ) MSD ug/L 40.00 160 % 75- 125 435 <br /> MSRPD ug/L 40. 00 44.4% <_20 .0 435 <br /> PDS ug/L 40. 00 354 % 75425 430 <br /> Nickel 3010 11/09/ 19 :213120JZA Blank ug/L ND < 1 <br /> LCS ug/L 40. 00 105 % 85- 115 <br /> MS ug/L 40.00 87, 3 % 75- 125 <br /> (CC 1983699-001 ) MSD ug/L 40.00 82, 7 % 75- 125 <br /> MSRPD ug/L 40.00 4 .9% <_20 <br /> PDS ug/L 40. 00 142 % 75425 430 <br /> Silver 3010 11 /09/ 19 :213120JZA Blank ug/L ND <0.25 <br /> LCS ug/L 40.00 108 % 85- 115 <br /> MS ug/L 40. 00 101 % 75- 125 <br /> (CC 1983699-001 ) MSD ug/L 40. 00 98.6 % 75425 <br /> MSRPD ug/L 40. 00 2 .0% <20.0 <br /> PDS ug/L 40.00 121 % 75- 125 <br /> inc 3010 11 /09/ 19 :213120JZA LPDS <br /> ug/L ND < 10 <br /> ug/L 40. 00 112 % 85- 115 <br /> ug/L 40. 00 -23 ,4 % 75- 125 435 <br /> (CC 1983699-001 ) ug/L 40.00 -7 .2 % 75- 125 435 <br /> ug/L 40. 00 10. 3% <20 .0 <br /> ug/L 40. 00 85,2 % 75- 125 <br /> Wet Chem <br /> Non Polar Material (SGT-HEM) 1664 11 /21 / 19 :213434AMM Blank mg/L ND <3 <br /> LCS mg/L 22 . 67 102 % 80- 120 <br /> BS mg/L 22. 67 80, 6 % 80- 120 <br /> BSD mg/L 22. 67 98 . 8 % 80- 120 <br /> BSRPD mg/L 22.67 20.2% <23 . 1 <br /> Oil and Grease 1664A 11 / 18/ 19 :213282AMM Blank mg/L ND <3 <br /> LCS mg/L 44. 89 96. 7 % 78- 114 <br /> BS mg/L 44. 89 94. 1 % 78- 114 <br /> BSD mg/L 44. 89 97. 3 % 78- 114 <br /> BSRPD m L 44. 89 3 .4% < 18 <br /> Total Dissolved Solids (TFR) 2540CE 11 /07/ 19 :212856CTL Blank mg/L ND <20 <br /> LCS mg/L 993 .0 100 % 90410 <br /> (SP 1915075-001 ) Dup mg/L 1 .8% 5 <br /> (SP 1915103-001 Du m L 1 0. 8% 5 <br /> Cyanide 4500CNCE 11 / 11 / 19 :217669AMM CCV mg/L 0 . 1000 97. 1 % 90- 110 <br /> CCB mg/L -0.00156 0.004 <br /> CCV mg/L 0 . 1000 100 % 90- 110 <br /> CCB mg/L 400156 0 .004 <br /> anide, Total 4500CNCE 11 / 10/ 19 :212946AMM Blank m L ND <0. 004 <br /> Page 12 of 28 <br />