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IM' www.energylab.cam <br />Ajubtlce/Ercedeecesteoe IM ; Helena MT 877-472-0711 Billings, MT 808.735-4488 * Casper, WY 688-235-0515 <br />1 Gillette, WY 666-686-7173 • Rapid City, SD 888-672-1225 & College Station, TX 888-690-2218 <br /> OA/QC Summary Report <br />Client: Cotter Corporation Report Date: 08/16/10 <br />Project: Schwartzwalder Water Monitoring Progr am Work Order: C10070913 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: 26902 <br />Sample ID: MB-26902 8 Method Blank Run: ICPMS2-C_100803A 08/03/10 16:07 <br />Aluminum ND mg/L 0.006 <br />Arsenic ND mg/L 0.0008 <br />Copper 0.0002 mg/L 0.0002 <br />Lead ND mg/L 8E-05 <br />Manganese 0.0002 mg/L 0.0001 <br />Silver 0.0002 mg/L 0.0002 <br />Thallium ND mg/L 0.0004 <br />Zinc 0.002 mg/L 0.001 <br />Sample ID: LCS3-26902 8 Laboratory Control Sample Run: ICPMS2-C_100803A 08/03/10 16:14 <br />Aluminum 2.5 mg/L 0.10 100 85 115 <br />Arsenic 0.53 mg/L 0.0010 105 85 115 <br />Copper 0.51 mg/L 0.010 102 85 115 <br />Lead 0.54 mg/L 0.0010 107 85 115 <br />Manganese 2.5 mg/L 0.010 98 85 115 <br />Silver 0.052 mg/L 0.010 103 85 115 <br />Thallium 0.53 mg/L 0.00040 105 85 115 <br />Zinc 0.51 mg/L 0.010 101 85 115 <br />Sample ID: C10070913-011CMS3 8 Sample Matrix Spike Run: ICPMS2-C_100803A 08/03/10 19:02 <br />Aluminum 0.280 mg/L 0.10 112 70 130 <br />Arsenic 0.277 mg/L 0.0041 103 70 130 <br />Copper 0.252 mg/L 0.010 97 70 130 <br />Lead 0.252 mg/L 0,050 100 70 130 <br />Manganese 4.65 mg/L 0.010 7 70 130 S <br />Silver 0.0904 mg/L 0.010 181 70 130 S <br />Thallium 0.262 mg/L 0.10 100 70 130 <br />Zinc 0.625 mg/L 0.010 101 70 130 <br />Sample ID: 010070913-011CMSD 8 Sample Matrix Spike Duplicate Run: ICPMS2-C_100803A 08/03/10 19:09 <br />Aluminum 0.289 mg/L 0.10 116 70 130 3.2 20 <br />Arsenic 0.279 mg/L 0.0041 104 70 130 0.7 20 <br />Copper 0.252 mg/L 0.010 97 70 130 0.1 20 <br />Lead 0.254 mg/L 0.050 101 70 130 01 20 <br />Manganese 4.70 mg/L 0.010 9 70 130 1.1 20 S <br />Silver 0.0968 mg/L 0.010 194 70 130 6.9 20 S <br />Thallium 0.263 mg/L 0.10 101 70 130 0.7 20 <br />Zinc 0.628 mg/L 0.010 102 70 130 0.6 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum delectable concentration <br />ND - Not detected al the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 35 of 45