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www.pbrgylab=rn jt Helena MT 577-472-0711 • Billings, MT800-735-4489 • Casper, WYOW235-0515 <br />AadjaYaffitcsebec?SFrs adSt t r; GiiVtte, wy 866-686-7175 • Rapid City, SD 886-672-1225 * College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />Report Date: 09/16/10 <br />Work Order: C10080790 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: R136491 <br />Sample ID: LRB Method Blank Run: ICPMS2-C_100825A 08/25/10 18:01 <br />Uranium ND mg/L 1 E-05 <br />Sample ID: LFB Laboratory Fortified Blank Run: ICPMS2-C_100825A 08/25/10 18:06 <br />Uranium 0.0542 mg/L 0.00030 108 85 115 <br />Sample ID: C10080767-001BMS4 Sample Matrix Spike Run: ICPMS2-C_100825A 08/26/10 11:02 <br />Uranium 0.137 mg/L 0.00030 126 70 130 <br />Sample ID: C10080767-001BMSD Sample Matrix Spike Duplicate Run: ICPMS2-C_100825A 08/26/10 11:07 <br />Uranium 0.139 mg/L 0.00030 129 70 130 1.3 20 <br />Method: E200.8 Batch: R136941 <br />Sample ID: LRB 4 Method Blank Run: ICPMS2-C_100907A 09/07/10 11:58 <br />Antimony 0.0001 mg/L 7E-05 <br />Lead ND mg/L 3E-05 <br />Thallium ND mg/L 1E-05 <br />Uranium ND mg/L 1E-05 <br />Sample ID: LFB 4 Laboratory Fortified Blank Run: ICPMS2-C_100907A 09/07/10 12:05 <br />Antimony 0.0527 mg/L 0.0010 105 85 115 <br />Lead 0.0524 mg/L 0.0010 105 85 115 <br />Thallium 0.0522 mg/L 0.0010 104 85 115 <br />Uranium 0.0536 mg/L 0.00030 107 85 115 <br />Sample ID: C10081002-001CMS4 4 Sample Matrix Spike Run: ICPMS2-C_100907A 09/07/10 13:39 <br />Antimony 0.053 mg/L 0.0010 107 70 130 <br />Lead 0.051 mg/L 0.0010 101 70 130 <br />Thallium 0.051 mg/L 0.00040 101 70 130 <br />Uranium 0.054 mg/L 0.00030 104 70 130 <br />Sample ID: C10081002-001CMSD 4 Sample Matrix Spike Duplicate Run: ICPMS2-C_100907A 09/07/10 13:46 <br />Antimony 0.057 mg/L 0.0010 115 70 130 7.6 20 <br />Lead 0.054 mg/L 0.0010 107 70 130 6 20 <br />Thallium 0.054 mg/L 0.00040 107 70 130 5.9 20 <br />Uranium 0.058 mg/L 0.00030 111 70 130 6.2 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 19 of 37