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¦ • wwwtinergylab.com r Helena, MT 877-472-0711 • Billings, MT 800-735-4489 • Casper, WY 888-235-0515 <br />Ae lafEaalina3alac?llllt ?..,; Gillette, KY 066-686-7175• Rapid City, SD 888-672-1225• College Station, T% 888-680-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 09/14/10 <br />Project: Schwartzwalder Water Monitoring Program Work Order: C10080538 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLiimit Qual <br />Method: E200.8 Batch: 27097 <br />Sample ID: MB-27097 Method Blank Run: ICPMS2-C_100823A 08/24/10 09:26 <br />Lead ND mg/L 5E-05 <br />Sample ID: LCS3-27097 Laboratory Control Sample Run: ICPMS2-C_100823A 08/24/10 09:33 <br />Lead 0.528 mg/L 0.050 106 85 115 <br />Sample ID: C10080596-001CMS3 Sample Matrix Spike Run: ICPMS2-C_100823A 08/24/10 10:41 <br />Lead 0.613 mg/L 0.050 112 70 130 <br />Sample ID: C10080596-001CMSD Sample Matrix Spike Duplicate Run: ICPMS2-C_100823A 08/24/10 10:47 <br />Lead 0.631 mg/L 0.050 116 70 130 3 20 <br />Method: E200.8 Batch: 27097 <br />Sample ID: MB-27097 Method Blank Run: ICPMS2-C_100901A 09/01/10 17:14 <br />Antimony ND mg/L 0.0002 <br />Sample ID: LCS3-27097 Laboratory Control Sample Run: ICPMS2-C_100901A 09/01/10 17:21 <br />Antimony 0.609 mg/L 0.050 122 85 115 S <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 remainde <br />of the run QA is within acceptance range, this batch is approved. <br />Sample ID: C10080596-001CMS3 Sample Matrix Spike Run: ICPMS2-C_100901A 09/01/10 18:28 <br />Antimony 0.685 mg/L 0.050 137 70 130 S <br />Sample ID: C10080596-001CMSD Sample Matrix Spike Duplicate Run: ICPMS2-C_100901A 09/01/10 18:35 <br />Antimony 0.683 mg/L 0.050 136 70 130 0.3 20 S <br />Method: E200.8 <br />Sample ID: LRB <br />Antimony <br />Sample ID: LFB <br />Antimony <br />Sample ID: C10081049-018AMS4 <br />Antimony <br />Sample ID: C10081049-018AMSD <br />Antimony <br />Method Blank <br />ND mg/L 7E-05 <br />Laboratory Fortified Blank <br />0.0514 mg/L 0.0010 <br />Sample Matrix Spike <br />0.554 mg/L 0.050 <br />Run: ICPMS2-C_100901 A <br />Run: ICPMS2-C_100901 A <br />103 85 115 <br />Run: ICPMS2-C_100901 A <br />110 70 130 <br />Sample Matrix Spike Duplicate Run: ICPMS2-C_100901A <br />0.580 mg/L 0.050 116 70 130 4.7 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Batch: R136740 <br />09/01/10 12:04 <br />09/01/10 12:11 <br />09/01/10 23:40 <br />09/02/10 00:13 <br />20 <br />Page 16 of 31