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• www.ene dob.com Helena, Iii 677472-0711 • Billings, ittr 000-7354409 • Casper, WY 680-235-0515 <br />aEAN1e'' Itet Gillette, WY 066-606-7175 • Rapid City, SD 009-672-1225 • college station, TX 600-690-2210 <br />QA/QC Summary Report <br />Revised Date: 11/23/10 <br />Client: Cotter Corporation Report Date: 11 /12/10 <br />Project: Schwartzwalder Water Monitoring Program Discharge Work Order: C10100590 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Clual <br />Method: A2540 C Batch: 101015 1 SLDS-TDS-W <br />Sample ID: MBLK1_101015 Method Blank Run: BAL-1_101015B 10/15/10 15:49 <br />Solids, Total Dissolved TDS @ 180 C ND mg/L 10 <br />Sample ID: LCS1_101015 Laboratory Control Sample Run: BAL-1_101015B 10/15/10 15:49 <br />Solids, Total Dissolved TDS @ 180 C 1030 mg/L 10 103 90 110 <br />Sample ID: C10100606-001AMS Sample Matrix Spike Run: BAL-1_101015B 10/15/10 15:56 <br />Solids, Total Dissolved TDS @ 180 C 2350 mg/L 10 101 90 110 <br />Sample ID: C10100606-001AMSD Sample Matrix Spike Duplicate Run: BAL-1_101015B 10/15/10 15:56 <br />Solids, Total Dissolved TDS @ 180 C 2320 mg/L 10 100 90 110 1.1 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 5 of 22