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. _ www.energylab.com Helena, MT 877-472-0711 • Billings, MT 800-735-4489 * Casper, WY 888-235-0515 <br />1415 <br />4 -9 k -A ;?? AnWalExcedancoSince 1952 Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 college station, Tx 888-690-2218 <br />M Min 1?? <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/24/11 <br />Project: Schwartzwalder Water Sampling Program Discharge Work Order: C10120395 <br />rAnalyte 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 10.0 mg/L <br />Sulfate 40.7 mg/L <br />Sample ID: MBLK 2 Method Blank <br />Chloride ND mg/L <br />Sulfate ND mg/L <br />Sample ID: C10120388-OOIAMS 2 Sample Matrix Spike <br />Chloride 65.2 mg/L <br />Sulfate 633 mg/L <br />Sample ID: C10120388-001AMSD 2 Sample Matrix Spike Duplicate <br />Chloride 65.8 mg/L <br />Sulfate 635 mg/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />batcn: H14=11 <br />Run: IC2-C 101213A 12/13/1010:53 <br />1.0 100 90 110 <br />1.0 102 90 110 <br /> Run: IC2-C 101213A <br />0.06 <br />0.2 <br /> Run: IC2-C_101213A <br />1.0 103 80 120 <br />4.0 97 80 120 <br /> Run: IC2-C_101213A <br />1.0 104 80 120 0.9 <br />4.0 98 80 120 0.2 <br />ND - Not detected at the reporting limit. <br />12/13/10 11:09 <br />12/14/10 10:47 <br />12/14/10 11:03 <br />10 <br />10 <br />Page 15 of 22