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www.enerulab.com Helena,MT 677-472-0711 •Billings,MT 800-735-4489•Casper,WY 888-235-0515 <br /> Gillette,WY 866-686-7175•Rapid City,SD 886-672-1225•College Station,TX 888-690-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 06/26/14 <br /> Project: Schwartz GW 06/05/14 S27539, S27540 Work Order: C14060251 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E200.8 Analytical Run: ICPMS2-C_140619A <br /> Lab ID: ICV Initial Calibration Verification Standard 06/19/14 15:47 <br /> Arsenic 0.0506 mg/L 0.0010 101 90 110 <br /> Method: E200.8 Batch:41721 <br /> Lab ID: MB-41721 Method Blank Run: ICPMS2-C 140619A 06/19/14 16:41 <br /> Arsenic ND mg/L 0.0003 <br /> Lab ID: LCS3-41721 Laboratory Control Sample Run: ICPMS2-C_140619A 06/19/14 16:44 <br /> Arsenic 0.456 mg/L 0.0010 91 85 115 <br /> Lab ID: C14060605-001AMS3 Sample Matrix Spike Run: ICPMS2-C_140619A 06/19/14 16:53 <br /> Arsenic 0.479 mg/L 0.0030 96 70 130 <br /> Lab ID: C14060605-001AMSD Sample Matrix Spike Duplicate Run: ICPMS2-C_140619A 06/19/14 16:56 <br /> Arsenic 0.478 mg/L 0.0030 96 70 130 0.1 20 <br /> Qualifiers: <br /> RL-Analyte reporting limit. ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration <br /> Page 11 of 24 <br />