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- _........_ ....... __....... -..__._..._ ._. _ <br />www,encrgylab.com Helena, IAT 577472-0711 • Billings, MT 800-735-4489 . Casper WY 888-235-0515 <br />_ _ " .. AnaKul Lrcill_ce Sine 1952 Gillette, WY 866-686-7175 n Rapid 04, SO 888-672-1225 6 College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 09/27/10 <br />Project: Schwartzwalder Water Monitoring Program-Discharge Work Order: 010090073 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Quai <br />Method: E300.0 <br />Sample ID: LCS 2 Laboratory Control Sample Run: IC2-C_100907A <br />Chloride 9.32 mg/L 1.0 93 90 110 <br />Sulfate 37.5 mg/L 1.0 94 90 110 <br />Sample ID: MBLK 2 Method Blank Run: IC2-C_100907A <br />Chloride ND mg/L 0.2 <br />Sulfate ND mg/L 0.04 <br />Sample ID: C10090106-003AMS 2 Sample Matrix Spike Run: IC2-C_100907A <br />Chloride 395 mg/L 2.0 98 80 120 <br />Sulfate 409 mg/L 8.0 98 80 120 <br />Sample ID: C1 00901 06-003AMSD 2 Sample Matrix Spike Duplicate Run: IC2-C_100907A <br />Chloride 395 mg/l_ 2.0 98 80 120 <br />Sulfate 411 mg/L 8.0 98 80 120 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: R136991 <br />09/07/1013:13 <br />09/07/1013:27 <br />09/07/10 22:06 <br />09/07!10 22:21 <br />0 20 <br />0.7 20 <br />Page 15 of 22