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wvrw.energylab.com 1 Helena, MT 677-472.0711 • Billings, MT 800-735.4489 v Casper, WY 888-235-0515 <br />• AnaryrlcalFrcerlence41me 102 J Gillette, WY 866.686-7175 a Rapid City, SO 888-672-1225 : College Station, TX 888-690.2218 <br />OA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/06/11 <br />Project: Schwartzwalder Water Monitoring Program - Ground W Work Order: C10110899 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Dual <br />Method: A2540 C <br />Sample ID: MBLKi_101130 Method Blank <br />Solids, Total Dissolved TDS @ 180 C ND mg/L <br />Sample ID: LCS1_101130 Laboratory Control Sample <br />Solids, Total Dissolved TDS @ 180 C 969 mg/L <br />Sample ID: C10110901-002AMS Sample Matrix Spike <br />Solids, Total Dissolved TDS @ 180 C 2780 mg/L <br />Sample ID: 010110901-002AMSD Sample Matrix Spike Duplicate <br />Solids, Total Dissolved TDS @ 180 C 2780 mg/L <br />Qualifiers: <br />RL - Analyle reporting limit. <br />MDC - Minimum detectable concentration <br />Balch: 101130..., 1._SLDS-TDS-W <br />Run: BAL-1 101130A 11130/10 09:06 <br />10 <br />Run: BAL-1101 130A 11130/10 09:07 <br />10 97 90 110 <br />Run: BAL-1_101130A 11130/1009:09 <br />10 95 90 110 <br />Run: BAL-1101 130A 11/30/1009:09 <br />10 95 90 110 0.1 10 <br />ND - Not detected at the reporting limit. <br />Page 2 of 13 <br />Page 8 of 23