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• www.wdab.com Helena,MT 877472-0711 •Billings,MY NO-73544480•Casper,WY OW235-8515 <br /> Gillette,WY 866-686-7175•Rapid City,So 886-672-1225•College Station,YX 888-690-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 07/30/14 <br /> Project: Schwartz-GW 07/10/14 S27633 and S27634 Work Order: C14070445 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E200.8 Analytical Run: ICPMS4-C_140728A <br /> Lab ID: ICV Initial Calibration Verification Standard 07/28/14 14:29 <br /> Silver 0.0194 mg/L 0.0010 97 90 110 <br /> Method: E200.8 Batch:41945 <br /> Lab ID: MB-41945 Method Blank Run: ICPMS4-C_140728A 07/28/14 17:42 <br /> Silver ND mg/L 0.0002 <br /> Lab ID: LCS3-41945 Laboratory Control Sample Run: ICPMS4-C_140728A 07/28/14 17:47 <br /> Silver 0.0493 mg/L 0.0010 99 85 115 <br /> Lab ID: C14070457-008AMS3 Sample Matrix Spike Run: ICPMS4-C_140728A 07/28/14 18:08 <br /> Silver 0.0390 mg/L 0.0010 78 70 130 <br /> Lab ID: C14070457-008AMSD Sample Matrix Spike Duplicate Run: ICPMS4-C_140728A 07/28/14 18:12 <br /> Silver 0.0416 mg/L 0.0010 83 70 130 6.4 20 <br /> Qualifiers: <br /> RL-Analyte reporting limit. ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration <br /> Page 15 of 25 <br />