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• www energylab.corn _ Helena MT 877-472-0711 a Billings MT 800-735-4489 - Casper, WY 888-235-0515 <br />Anarydcalfxcellance Slats 1932 Gillette, WY 666-686-7175 - Rapid City, SD 888-672-1225 - College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />Report Date: 09/14/10 <br />Work Order: C10080305 <br /> <br />Analyte Co unt Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A4500-F C Batch: R135989 <br />Sample ID: MBLK Method Blank Run: MANTECH_100811A 08/11/10 10:15 <br />Fluoride ND mg/L 0.05 <br />Sample ID: LCS Laboratory Control Sample Run: MANTECH_100811A 08/11/10 10:17 <br />Fluoride 0.980 mg/L 0.10 98 90 110 <br />Sample ID: C10080282-002BMS Sample Matrix Spike Run: MANTECH_100811A 08/11/10 13:58 <br />Fluoride 1.34 mg/L 0.10 97 80 120 <br />Sample ID: C10080282-002BMSD Sample Matrix Spike Duplicate Run: MANTECH_100811A 08/11/10 14:03 <br />Fluoride 1.34 mg/L 0.10 97 80 120 0 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 8 of 21