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wwwoere4a15.com '877472-0711"! • Billings, W 8Q0-735-4469 • Casper, ,W OBS-235-0515 <br />A gtlalfuaBaxrSfaNa862 ?.e 1,k75 + Rapid City, SO 8188-672-1225 • College Station, TX 688-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/15/11 <br />Project: Schwartz-SW 03/16/11 S25593-25600 Work Order: C11030585 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Batch: R143963 <br />Sample ID: LCS 2 Laboratory Control Sample Run: IC2-C_110322A 03/22/11 13:32 <br />Chloride 9.89 mg/L 1.0 99 90 110 <br />Sulfate 40.1 mg/L 1.0 100 90 110 <br />Sample ID: MBLK 2 Method Blank Run: IC2-C_110322A 03/22/11 13:47 <br />Chloride ND mg/L 0.06 <br />Sulfate 0.3 mg/L 0.2 <br />Sample ID: LFB 2 Laboratory Fortified Blank Run: IC2-C_110322A 03/22/11 14:18 <br />Chloride 12.7 mg/L 1.0 101 90 110 <br />Sulfate 51.5 mg/L 1.0 102 90 110 <br />Sample ID: C11030568-002AMS 2 Sample Matrix Spike Run: IC2-C_110322A 03/23/11 05:43 <br />Chloride 27.2 mg/L 1.0 106 80 120 <br />Sulfate 339 mg/L 1.6 98 80 120 <br />Sample ID: C11030568-002AMSD 2 Sample Matrix Spike Duplicate Run: IC2-C_110322A 03/23/11 05:58 <br />Chloride 26.7 mg/L 1.0 103 80 120 1.7 10 <br />Sulfate 341 mg/L 1.6 100 80 120 0.4 10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 23 of 39 <br />:. ::;. .-,. ... "t. ?.... .. :?>:. ass.. .:. .. .,m:cicw;..w.. ,. .. ? ?:... ? a,:?.?;. ? ... .n.rd?'ti•".,. ,.?acC?.:?.%?s.?ts?-?: ?.waa...-x.. c..