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....... <br />•l www.energy(ab.com 1 <br />Helena, MT 877.472-0711 Billings MT 800-735-4489 - Casper WY 888-235-0515 <br />,• M Analytical Erregance unp t931 ; MGillette, VtY 866-686.7175 • Rapid City, SO 888-672-1225 + College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 12/15110 <br />Project: Schwartzwalder Water Sampling Program-Ground Water Work Order: 010110379 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Quai <br />Method: E300.0 Batch: R139834 <br />Sample ID: LCS Laboratory Control Sample Run: IC1-0_101111A 11/11/10 14:17 <br />Sullale 37.3 mg/L 1.0 93 90 110 <br />Sample ID: MBLK Method Blank Run: IC1-C.-101111A 11/11/10 14:33 <br />Sullate ND mg/L 0.06 <br />Sample ID: C10110402-003AMS Sample Matrix Spike Run: IC1-C--101111A 11/11/10 22:03 <br />Sullate 366 mg/L 1.6 88 80 120 <br />Sample ID: C10110402.003AMSD Sample Matrix Spike Duplicate Run: IC1-C-..101111A 11/11/10 22:19 <br />Sulfate 371 mg/L 1.6 93 80 120 1.3 10 <br />Method: E300.0 Batch: R139886 <br />Sample ID: LCS Laboratory Control Sample Run: IC2-C_1 01112A 11/12'10 20:53 <br />Chloride 9.23 mg/L 1.0 92 90 110 <br />Sample ID: MBLK Method Blank Run: IC2-C 101112A 11/12/10 21:09 <br />Chloride ND mg/L 0.06 <br />Sample ID: 01 01 1 0379-001BMS Sample Matrix Spike Run: IC2-C-101112A 11/13/1005:22 <br />Chloride 68.9 mg/L 1.0 95 80 120 <br />Sample ID: C1 01 1 0379-001 BMSD Sample Matrix Spike Duplicate Run: IC2-C_101112A 11113/10 05:37 <br />Chloride 68.8 mg/L 1.0 95 80 120 0.1 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 13 of 21