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.._.... . . _ _....... -_. ............ <br />- ---- <br />• www.encrgylab.com Helena MT 877-472-0711 Billings, MT 808-735.4489 - Casper, WY 888-235-0515 <br />_ - Ana7yntsf£xce(lance Slnre 185E i Gillette. WY 866-686-7175 a Rapid City, SO 888-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project- Schwartzwalder Water Monitoring Program <br />Analyte Count Result Units <br />Report Date: 08/16/10 <br />Work Order: C10070913 <br />RL %REC Low Limit High Limit RPD RPDLimit Qua] <br />Method: E300.0 <br />Sample ID: LCS 2 Laboratory Control Sample <br />Chloride 9.46 mg/L <br />Sulfate 38.1 mg/L <br />Sample ID: MBLK 2 Method Blank <br />Chloride ND mg/L <br />Sulfate ND mg/L <br />Sample ID: 010070913-006AMS 2 Sample Matrix Spike <br />Chloride 122 mg/L <br />Sulfate 2370 mg/L <br />Sample ID: C10070913-006AMSD 2 Sample Matrix Spike Duplicate <br />Chloride 122 mg/L <br />Sulfate 2320 mg/L <br />Balch: R135566 <br />Run: IC2-C100728A 07/28/10 13:06 <br />1.0 95 90 110 <br />1.0 95 90 110 <br />Run: IC2-C 100728A 07/2811013:22 <br />0.2 <br />0.04 <br />Run: IC2-C 100728A 07/29/10 20,24 <br />2.0 100 80 120 <br />8.0 80 120 A <br />Run: IC2-C 100728A 07/29/10 20:40 <br />2.0 100 80 120 0.2 20 <br />8.0 80 120 2.2 20 A <br />Method: E300.0 <br />Sample ID: LCS Laboratory Control Sample <br />Sulfate 38.4 mg/L <br />Sample ID: MBLK Method Blank <br />Sulfate ND mg/L <br />Sample ID: C10070913.003AMS Sample Matrix Spike <br />Sulfate 2760 mg/L <br />Sample ID: C10070913-003AMSD Sample Matrix Spike Duplicate <br />Sulfate 2730 mg/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <br />Batch: R135786 <br />Run: IC2-C_100804A 08/04/10 16:34 <br />1.0 96 90 110 <br />Run: IC2-C_100804A 08/04/10 16:50 <br />0.04 <br />Run: IC2-C 100804A 08/04/10 22:18 <br />16 104 80 120 <br />Run: IC2-C 100804A 08/04/10 22:35 <br />16 101 80 120 0.8 20 <br />A - The analyse level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />MDC - Minimum detectable concentration <br />Page 39 of 45