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www.energylab.eom <br />AadWfix hmSke IOU <br />Helena, MT 877472-0711 • Billings, W 800-735-4489 • Casper, WY 888-235-0515 <br />Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 886-690-2218 <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 Qual <br />Method: A4500-F C Batch: R135359 <br />Sample ID: MBLK Method Blank Run: MANTECH_100727A 07/27/10 13:14 <br />Fluoride ND mg/L 0.05 <br />Sample ID: LCS Laboratory Control Sample Run: MANTECH_100727A 07/27/10 13:17 <br />Fluoride 1.06 mg/L 0.10 106 90 110 <br />Sample ID: 010070832-002AMS Sample Matrix Spike Run: MANTECH_100727A 07/27/10 14:39 <br />Fluoride 1.66 mg/L 0.10 104 80 120 <br />Sample ID: C10070832-002AMSD Sample Matrix Spike Duplicate Run: MANTECH_100727A 07/27/10 14:46 <br />Fluoride 1.69 mg/L 0.10 107 80 120 1.8 10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 9 of 25