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* Trust our People.Trust our Data. Billings,MT 800.735.4489• Casper,WY 888.235.0515 <br /> College Station,TX 888.690.2218•Gillette,WY 666.686.7175•Helena.MT 877.472.0711 <br /> QA/QC Summary Report <br /> Prepared by Casper,WY Branch <br /> Client: Cotter Corporation Report Date: 08/11/16 <br /> Project: Schwartz-GW 7/15/16 S29106,S29108 Work Order: C16070530 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E200.8 Analytical Run: ICPMS4-C_160801A <br /> Lab ID: ICV 5 Initial Calibration Verification Standard 08/01/16 13:23 <br /> Aluminum 0.0519 mg/L 0.0010 104 90 110 <br /> Antimony 0.0533 mg/L 0.0010 107 90 110 <br /> Copper 0.0520 mg/L 0.0010 104 90 110 <br /> Silver 0.0195 mg/L 0.0010 97 90 110 <br /> Thallium 0.0512 mg/L 0.0010 102 90 110 <br /> Method: E200.8 Batch:47941 <br /> Lab ID: MB-47941 5 Method Blank Run:ICPMS4-C 160801A 08/02/16 05:47 <br /> Aluminum 4E-05 mg/L 3E-06 <br /> Antimony ND mg/L 1 E-06 <br /> Copper 1 E-05 mg/L 1 E-06 <br /> Silver ND mg/L 1 E-06 <br /> Thallium ND mg/L <br /> Lab ID: C16070742-006AMS3 5 Sample Matrix Spike Run: ICPMS4-C_160801A 08/02/16 07:09 <br /> Aluminum 2.65 mg/L 0.030 106 70 130 <br /> Antimony 0.619 mg/L 0.0010 124 70 130 <br /> Copper 0.501 mg/L 0.0050 99 70 130 <br /> Silver 0,0472 mg/L 0.0010 94 70 130 <br /> Thallium 0.445 mg/L 0.00050 89 70 130 <br /> Lab ID: C16070742-006AMSD 5 Sample Matrix Spike Duplicate Run: ICPMS4-C_160801A 08/02/16 07:15 <br /> Aluminum 2.61 mg/L 0.030 104 70 130 1.4 20 <br /> Antimony 0.615 mg/L 0.0010 123 70 130 0.6 20 <br /> Copper 0.489 mg/L 0.0050 96 70 130 2.3 20 <br /> Silver 0.0514 mg/L 0.0010 103 70 130 8.6 20 <br /> Thallium 0.483 mg/L 0.00050 97 70 130 8.2 20 <br /> Lab ID: LCS3-47941 5 Laboratory Control Sample Run: ICPMS4-C_160801A 08/02/16 05:53 <br /> Aluminum 2.61 mg/L 0.030 104 85 115 <br /> Antimony 0.616 mg/L 0.0010 123 85 115 S <br /> Copper 0.470 mg/L 0.0050 94 85 115 <br /> Silver 0.0461 mg/L 0.0010 92 85 115 <br /> Thallium 0.490 mg/L 0.00050 98 85 115 <br /> -Antimony response is above standard QA limit. This could indicate a high bias for the sample results. Since there were no detectable analyte responses,and the remaind <br /> of the run QA is within acceptance range,this batch is approved. <br /> Qualifiers: <br /> RL-Analyte reporting limit. ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration S-Spike recovery outside of advisory limits. <br /> Page 7 of 17 <br />