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� www.erwgylab.com f Helena,MT 877-472-0711 +Billings,MT B00-735-4480•Casper,WY 888-235-0515 <br /> n Awt, alErealw m ranee 1951 Gillette,WY 866-686-7175•Rapid City,SD 886-672-1225•College Station,Tx IW690-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 04/28/14 <br /> Project: Schwartz GW 04/09/14 S27455, S27457 Work Order: C14040376 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E245.1 Analytical Run:CVAA_C203_140416A <br /> Lab ID: CCV Continuing Calibration Verification Standard 04/16/14 11:20 <br /> Mercury 0.00518 mg/L 0.00010 104 90 110 <br /> Method: E245.1 Batch: 140416A <br /> Lab ID: IPC Instrument Performance Check Sample Run:CVAA_C203_140416A 04/16/14 10:49 <br /> Mercury 0.00510 mg/L 0.00010 102 95 105 <br /> Method: E245.1 Batch:41115 <br /> Lab ID: MB-41115 Method Blank Run:CVAA C203 140416A 04/16/14 10:55 <br /> Mercury ND mg/L 7E-05 <br /> Lab ID: LCS-41115 Laboratory Control Sample Run:CVAA_C203_140416A 04/16/14 11:01 <br /> Mercury 0.00560 mg/L 0.00010 112 85 115 <br /> Lab ID: C14040300-001DMS Sample Matrix Spike Run:CVAA_C203_140416A 04/16/14 11:14 <br /> Mercury 0.00500 mg/L 0.00010 100 70 130 <br /> Lab ID: C14040300-001DMSD Sample Matrix Spike Duplicate Run:CVAA_C203_140416A 04/16/14 11:16 <br /> Mercury 0.00509 mg/L 0.00010 102 70 130 1.7 10 <br /> Qualifiers: <br /> RL-Analyte reporting limit. ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration <br /> Page 16 of 26 <br />