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www etllab com H e n a, MT 677-472-0711 • Billings, W 800-735-4488 • Casper, WY 888-295-0315 <br />Aedyt?alEsr?9i•cefAa, lelft Giirettc, wr 866-686-7175 • Rapid City, SD,888-871-1Y25 • College Station, TX OU-610-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />Report Date: 09/14/10 <br />Work Order: C10080538 <br />Analyte Count Result Units <br />Method: A2540 C <br />Sample ID: MBLK1_100813 Method Blank <br />Solids, Total Dissolved TDS @ 180 C ND mg/L <br />Sample ID: LCS1_100813 Laboratory Control Sample <br />Solids, Total Dissolved TDS @ 180 C 996 mg/L <br />Sample ID: C10080538-003AMS Sample Matrix Spike <br />Solids, Total Dissolved TDS @ 180 C 2370 mg/L <br />Sample ID: C10080538-003AMSD Sample Matrix Spike Duplicate <br />Solids, Total Dissolved TDS @ 180 C 2360 mg/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Batch: 100813 2 SLDS-TDS-W <br /> Run: BAL-1 100813B 08/13/10 16:18 <br />10 <br /> Run: BAL-1 _100813B 08/13/10 16:19 <br />10 100 90 110 <br /> Run: BAL-1 100813B 08/13/10 16:25 <br />10 105 90 110 <br /> Run: BAL-1 100813B 08/13/10 16:25 <br />10 104 90 110 0.5 10 <br />ND - Not detected at the reporting limit. <br />Page 10 of 31