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� www.energylab.com Helena,MT 877472-0711 •Billings,MT 808-735-4480•Casper,WY 888-235-0515 <br /> - AwnteNEreMrluvrarA6res t9S1 Gillette,WY 866-686-7175•Rapid City,SD 88B-672-1225•C011e9e Station,TX 888-600-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 06/24/14 <br /> Project: Schwartz-SW 6/2/14 S27527 TH S27533 Work Order: C14060071 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E200.8 Analytical Run: ICPMS4-C_140623A <br /> Lab ID: ICV 2 Initial Calibration Verification Standard 06/23/14 15:11 <br /> Arsenic 0.0488 mg/L 0.0010 98 90 110 <br /> Chromium 0.0494 mg/L 0.0010 99 90 110 <br /> Method: E200.8 Batch:41738 <br /> Lab ID: C14060071-001DMS3 2 Sample Matrix Spike Run: ICPMS4-C_140623A 06/23/14 16:39 <br /> Arsenic 0.473 mg/L 0.0010 94 70 130 <br /> Chromium 0.495 mg/L 0.0050 98 70 130 <br /> Lab ID: C14060071-001DMSD 2 Sample Matrix Spike Duplicate Run: ICPMS4-C_140623A 06/23/14 16:43 <br /> Arsenic 0.478 mg/L 0.0010 95 70 130 1.1 20 <br /> Chromium 0.502 mg/L 0.0050 100 70 130 1.6 20 <br /> Lab ID: MB-41738 2 Method Blank Run: ICPMS4-C 140623A 06/23/14 16:06 <br /> Arsenic 0.001 mg/L 0.0004 <br /> Chromium 0.002 mg/L 0.0003 <br /> Lab ID: LCS3-41738 2 Laboratory Control Sample Run: ICPMS4-C_140623A 06/23/14 16:10 <br /> Arsenic 0.480 mg/L 0.0010 96 85 115 <br /> Chromium 0.499 mg/L 0.0050 99 85 115 <br /> Qualifiers: <br /> RL-Analyte reporting limit. ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration <br /> Page 22 of 38 <br />