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ENERGY www.energylab.com Helena, MT 871.472 -0711 • Billings, MT 600.735 -4480 • Casper, WY 888- 235 -0515 <br />Aa>tlESince feat Gillette, WY 868.686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, TX 888-690-2218 <br />Client: Cotter Corporation <br />Project: Schwartz GW 4/24/12 S26350 <br />Analyte <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 06/06/12 <br />Work Order: C12041245 <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Analytical Run: ICPMS4-C_120501B <br />Sample ID: ICV 8 Initial Calibration Verification Standard 05/01/12 17:18 <br />Antimony 0.0504 mg /L 0.0010 101 90 110 <br />Arsenic 0.0530 mg /L 0.0010 106 90 110 <br />Copper 0.0536 mg /L 0.0010 107 90 110 <br />Lead 0.0503 mg /L 0.0010 101 90 110 <br />Manganese 0.0508 mg /L 0.0010 102 90 110 <br />Phosphorus 0.970 mg /L 0.0024 97 90 110 <br />Silver 0.0201 mg /L 0.0010 101 90 110 <br />Thallium 0.0495 mg /L 0.0010 99 90 110 <br />Method: E200.8 <br />Sample ID: C12041332 -001 DMS4 8 Sample Matrix Spike Run: ICPMS4-C_120501B <br />Antimony 0.0535 mg /L 0.0010 106 70 130 <br />Arsenic 0.0512 mg /L 0.0010 102 70 130 <br />Copper 0.0493 mg /L 0.0050 94 70 130 <br />Lead 0.0518 mg /L 0.0010 103 70 130 <br />Manganese 0.0594 mg /L 0.0010 104 70 130 <br />Phosphorus 1.20 mg /L 0.10 120 70 130 <br />Silver 0.0177 mg /L 0.0010 88 70 130 <br />Thallium 0.0506 mg /L 0.00050 101 70 130 <br />Batch: R159156A <br />05/01/12 23:20 <br />Sample ID: C12041332 -001 DMSD 8 Sample Matrix Spike Duplicate Run: ICPMS4-C_120501B 05/01/12 23:24 <br />Antimony 0.0526 mg /L 0.0010 104 70 130 1.7 20 <br />Arsenic 0.0462 mg /L 0.0010 92 70 130 10 20 <br />Copper 0.0449 mg /L 0.0050 86 70 130 9.2 20 <br />Lead 0.0503 mg /L 0.0010 100 70 130 2.9 20 <br />Manganese 0.0578 mg /L 0.0010 101 70 130 2.7 20 <br />Phosphorus 1.15 mg /L 0.10 115 70 130 4.0 20 <br />Silver 0.0180 mg /L 0.0010 90 70 130 1.5 20 <br />Thallium 0.0496 mg /L 0.00050 99 70 130 2.1 20 <br />Sample ID: LRB 8 Method Blank Run: ICPMS4-C_120501B 05/01/12 17:55 <br />Antimony ND mg /L 0.0010 <br />Arsenic ND mg /L 0.0010 <br />Copper ND mg /L 0.0010 <br />Lead ND mg /L 0.0050 <br />Manganese ND mg /L 0.0050 <br />Phosphorus ND mg /L 0.010 <br />Silver 0.000156 mg /L 8.0E -05 <br />Thallium ND mg /L 0.00020 <br />Sample ID: LFB 8 Laboratory Fortified Blank Run: ICPMS4-C_120501B 05/01/12 18:00 <br />Antimony 0.0546 mg /L 0.0010 109 85 115 <br />Arsenic 0.0568 mg /L 0.0010 114 85 115 <br />Copper 0.0575 mg /L 0.0010 115 85 115 <br />Lead 0.0547 mg /L 0.0010 109 85 115 <br />ND - Not detected at the reporting limit. <br />Page 9 of 19 <br />