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wwwRnergplah.com <br />AaN)dlW t7xahmMks 1119 <br />Helena, NT 877472-0711 • Billings, MT 800-7354489 • Casper, WY 888-235-0515 <br />Gillette, WY 866-686-7175 • Rapid City, SO 886-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 08/15/10 <br />Project: Schwartzwalder Water Monitoring Program Work Order: C10070865 <br />Analyte Count Result Units RL. %REC Low Limit High Limit RPD RPDLimit Qua, <br />Method: A2540 C Batch: 100727 1 SLDS-TDS-W <br />Sample ID: MBLK1_100727 Method Blank Run: BAL-1 _100727C 07/27/10 14:49 <br />Solids, Total Dissolved TDS @ 180 C ND mg/L 10 <br />Sample ID: LCS1_100727 Laboratory Control Sample Run: BAL-1 _100727C 07/27/10 14:49 <br />Solids, Total Dissolved TDS @ 180 C 995 mg/L 10 99 90 110 <br />Sample ID: C10070865-001 FMS Sample Matrix Spike Run: BAL-1_ 100727C 07/27/10 14:50 <br />Solids, Total Dissolved TDS @ 180 C 5210 mg/L 10 102 90 110 <br />Sample ID: C10070865-001AMSD Sample Matrix Spike Duplicate Run: BAL-1_ 100727C 07/27/10 14:51 <br />Solids, Total Dissolved TDS @ 180 C 5120 mg/L 10 97 90 110 1.8 10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 6 of 25