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www.erwidlab-mrn <br />I ~EWAft p SrtOM IW <br />2-0711 • Billings, MT 800-735-4489 • Casper, WY BW235-051 <br />!.RR 'id cF4, so 988-672-1225_• college station, nc SOMI0-221 <br />OA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz SW 01-05-11 S25539 <br />Analyte Count Result Units <br />Method: A2540 C <br />Sample ID: MBLK1_110107 Method Blank <br />Solids, Total Dissolved TDS @ 180 C ND mg/L <br />Sample ID: LCS1_110107 Laboratory Control Sample <br />Solids, Total Dissolved TDS @ 180 C 951 mg/L <br />Sample ID: 011010212-001AMS Sample Matrix Spike <br />Solids, Total Dissolved TDS @ 180 C 6890 mg/L <br />Sample ID: 011010212-001AMSD Sample Matrix Spike Duplicate <br />Solids, Total Dissolved TDS @ 180 C 6950 mg/L <br />Report Date: 02/03/11 <br />Work Order: C11010185 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: 110107 1 SLDS-TDS-W <br />Run: BAL-1 110107A 01/07/11 15:20 <br />10 <br />Run: BAL-1_110107A 01/07/11 15:21 <br />10 95 90 110 <br />Run: BAL-1_110107A 01/07/11 15:25 <br />17 99 90 110 <br />Run: BAL-1_110107A 01/07/11 15:26 <br />17 100 90 110 0.9 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 6 of 24 <br />A?u