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r r wwre enegg abmm <br />Aury/W a0ftWS=IW <br />, MT B77=472-0711 • Billings, Mi 800-735-4499 • Casper, WY888-235-1515 <br />" •- Rcaie;nre, <br />' Ilette wr E6s'su-1175 *Rapid City, So 889-972-1225 • College Station, lx 886.610-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 03/15/11 <br />Project: Schwartz SW 02-10-11 S25580-S25582 Work Order: C11020376 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Quai <br />Method: A2540 C Batch: 110214_1_SLDS-TDS-W <br />Sample ID: MBLK1_110214 Method Blank Run: BAL-1_ 110214A 02/15/11 08:12 <br />Solids, Total Dissolved TDS @ 180 C ND mg/L 10 <br />Sample ID: LCS1_110214 Laboratory Control Sample Run: BAL-1 _110214A 02/15/11 08:12 <br />Solids, Total Dissolved TDS @ 180 C 1000 mg/L 10 100 90 110 <br />Sample ID: C11020381-007ADUP Sample Duplicate Run: BAL-1 _110214A 02/15/11 08:18 <br />Solids, Total Dissolved TDS @ 180 C 1940 mg/L 10 0.2 10 <br />Sample ID: C11020392-004AMS Sample Matrix Spike Run: BAL-1 _110214A 02/15/11 08:21 <br />Solids, Total Dissolved TDS @ 180 C 29800 mg/L 52 109 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