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www.energylab.com Helena, IAT 877.472-0711 r Billings, IAT 800-135-4489 . Casper, WY 808-235-0515 <br />A0lyrtcatfxc80eecastaca 1931 J Gillette, WY 866-686-7175 - Rapid City, SD 888.612-1225 - College Station, TX 888-680.2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/06/11 <br />Project: Schwartzwalder Water Monitoring Program - Ground W Work Order: C10110899 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 <br />Sample ID: LCS 2 Laboratory Control Sample <br />Chloride 9.36 mg/L <br />Sulfate 37.7 mg/L <br />Sample ID: MBLK 2 Method Blank <br />Chloride ND mg/L <br />Sulfate ND mg/L <br />Sample ID: C10110934-002AMS 2 Sample Matrix Spike <br />Chloride 14.9 mg/L <br />Sulfate 62.2 mg/L <br />Sample ID: C10110934-002AMSD 2 Sample Malrix Spike Duplicate <br />Chloride 15.0 mg/L <br />Sulfate 62.5 mg/L <br />Run: IC2-C 101201A <br />1.0 94 90 a 110 <br />1.0 94 90 110 <br />Run: IC2-C101201A <br />3.0 <br />5.0 <br />Run: IC2-C101201A <br />1.0 110 80 120 <br />1.0 107 80 120 <br />Run: IC2-C101201A <br />1.0 111 80 120 <br />1.0 108 80 120 <br />Balch: R140496 <br />12/01/10 10:37 <br />12101110 10:52 <br />12/01/10 1 7 02 <br />12/01/10 17:18 <br />0.8 10 <br />0.5 10 <br />Qualifiers: <br />RL - Analyle reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 9 of 13 <br />Page 14 of 23