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www.aodeb.com Helera, ml 511-412-ull Is Btl0ngs, Ml 6UY?iii'MOa ? basper, nr ooo-??rv?? <br />A iErcallMen trait °. 0lette , wY 566-666-7175 • Rapid City, S0 888-672-1225 • College Station, TX 888-690-2218 <br /> QA/QC Summary Report <br /> Prepared by C asper, W Y Branc h <br />Client: Cotter Corporation Report Date: 04/25/11 <br />Project: Schwartz-GW 03/30/11 S25671 & S25672 Work Order: C11030940 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Batch. R144419A <br />Method: E200.8 <br />Sample ID: 011030851-001CMS4 12 Sample Matrix Spike Run: ICPMS4-C_110404A 04/04/11 23:12 <br />Iron 1.29 mg/L 0.030 99 70 130 <br />Lead 0.0522 mg/L 0.050 104 70 130 <br />Manganese 0.0705 mg/L 0.010 101 70 130 <br />Molybdenum 0.0492 mg/L 0.0010 98 70 130 <br />Silver 0.0180 mg/L 0.010 90 70 130 <br />Thallium 0.0517 mg/L 0.0010 103 70 130 <br />Uranium 0.0535 mg/L 0.00030 107 70 130 <br />Zinc 0.0557 mg/L 0.010 106 70 130 <br />Sample ID: C1 1030851 -001 CMSD 12 Sample Matrix Spike Duplicate Run: ICPMS4-C_110404A 04/04/11 23:19 <br />Aluminum 0.0492 mg/L 0.0010 98 70 130 1.6 20 <br />Antimony 0.0568 mg/L 0.050 114 70 130 0.7 20 <br />Arsenic 0.0523 mg/L 0.0010 104 70 130 2.7 20 <br />Copper 0.0487 mg/L 0.010 97 70 130 2.7 20 <br />Iron 1.28 mg/L 0.030 98 70 130 0.5 20 <br />Lead 0.0524 mg/L 0.050 105 70 130 0.4 20 <br />Manganese 0.0706 mg/L 0.010 101 70 130 0.0 20 <br />Molybdenum 0.0505 mg/L 0.0010 101 70 130 2.4 20 <br />Silver 0.0166 mg/L 0.010 83 70 130 7.7 20 <br />Thallium 0.0522 mg/L 0.0010 104 70 130 0.9 20 <br />Uranium 0.0536 mg/L 0.00030 107 70 130 0.3 20 <br />Zinc 0.0536 mg/L 0.010 102 70 130 4.0 20 <br />Sample ID: LRB 12 Method Blank Run: ICPM S4-C_110404A 04/04/11 12:28 <br />Aluminum ND mg/L 0.20 <br />Antimony ND mg/L 0.0010 <br />Arsenic ND mg/L 0.0010 <br />Copper ND mg/L 0.0010 <br />Iron ND mg/L 0.030 <br />Lead ND mg/L 0.0050 <br />Manganese ND mg/L 0.0050 <br />Molybdenum ND mg/L 0.0050 <br />Silver ND mg/L 5.0E-05 <br />Thallium ND mg/L 0.00020 <br />Uranium ND mg/L 0.00020 <br />Zinc ND mg/L 0.0050 <br />Sample ID: LFB 12 Laboratory Fortified Blank Run: ICPMS4-C_110404A 04/04/11 12:35 <br />Aluminum 0.0537 mg/L 0.0010 107 85 115 <br />Antimony 0.0517 mg/L 0.0010 102 85 115 <br />Arsenic 0.0538 mg/L 0.0010 108 85 115 <br />Copper 0.0537 mg/L 0.0010 107 85 115 <br />Iron 1.29 mg/L 0.012 103 85 115 <br />Lead 0.0524 mg/L 0.0010 105 85 115 <br />Manganese 0.0538 mg/L 0.0010 108 85 115 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 12 of 24