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www.a*q ab=m <br />AeaVWf #ftW 2 u IW <br />HclsrI Wf 677-472-0711 • Billings, IKrD00-735-4489 • Casper,WYOSS-235-9515 <br />tJ6`+JW 7175. • Rapid.City, SD 888-611-1225 • college station, Tx 888-6884218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/11 /11 <br />Project: Schwartz-SW 3/10/2011 S25686-S25688 Work Order: C11030378 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit oual <br />Method: A2540 C Batch: R143680 <br />Sample ID: MBLK1_ Method Blank Run: BAL-1_ 1103158 03/15/11 08:58 <br />Solids, Total Dissolved TDS @ 180 C ND mg/L 10 <br />Sample ID: LCS1_ Laboratory Control Sample Run: BAL-1 _110315B 03/15/11 08:58 <br />Solids, Total Dissolved TDS @ 180 C 1010 mg/L 10 101 90 110 <br />Sample ID: C1 1030396-001 ADUP Sample Duplicate Run: BAL-1 _1103158 03/15/11 09:04 <br />Solids, Total Dissolved TDS @ 180 C 242 mg/L 10 1.3 10 <br />Sample ID: 011030396-002AMS Sample Matrix Spike Run: BAL-1 _1103158 03/15/11 09:04 <br />Solids, Total Dissolved TDS @ 180 C 2280 mg/L 10 101 90 110 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 8 of 29