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l vrvnv.onergylab.com Helena, MT 871-472-0711 a Billings, MT 800-735-4469 • Casper, WY 688-235-0515 <br />Ano" a Wetleme SWov 1951 Gillette, WY 865-686-7175 a Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 12/10/10 <br />Project: Schwartzwalder Water Monitoring Program - SW Work Order: C10110203 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A4500-F C Batch: R139586 <br />Sample ID: MBLK Method Blank Run: MANTECH 101108A 11/08/10 10:04 <br />Fluoride ND mg.rL 0.05 <br />Sample ID: LCS Laboratory Control Sample Run: MANTECH-1 01 108A 11/08/10 10:08 <br />Fluoride 1.06 mg/L 0.10 106 90 110 <br />Sample ID: C10110243.001AMS Sample Matrix Spike Run: MANTECH-1 01 108A 11/08/10 11:01 <br />Fluoride 2.04 mg/L 0.10 98 80 120 <br />Sample ID: C10110243-001AMSD Sample Matrix Spike Duplicate Run: MANTECH_101108A 11r08/10 11:06 <br />Fluoride 2.04 mg/L 0.10 98 80 120 0.0 10 <br />Oualifiers- <br />RL - Analyle reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 18 of 43