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QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />Report Date: 08/15/10 <br />Work Order: C10070865 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Oual <br />Method: E353.2 Analytical Run: SUB-B151642 <br />Sample ID: ICV Initial Calibration Verification Standard 08/02/10 09:51 <br />Nitrogen, Nitrate+Nitrite as N 29.7 mg/L 0.20 101 90 110 <br />Method: E353.2 Batch: B_R151642 <br />Sample ID: MBLK Method Blank Run: SUB-B151642 08/02/10 09:52 <br />Nitrogen, Nitrate+Nitrite as N ND mg/L 0.01 <br />Sample ID: LFB Laboratory Fortified Blank Run: SUB-8151642 08/02/10 09:53 <br />Nitrogen, Nitrate+Nitrite as N 0.983 mg/L 0.010 100 90 110 <br />Sample ID: B10072824-001 BMS Sample Matrix Spike Run: SUB-8151642 08/02/10 12:20 <br />Nitrogen, Nitrate+Nitrite as IV 2.74 mg/L 0.010 101 90 110 <br />Sample ID: B10072824-001 BMSD Sample Matrix Spike Duplicate Run: SUB-8151642 08/02/10 12:21 <br />Nitrogen, Nitrate+Nitrite as IV 2.74 mg/L 0.010 102 90 110 0.2 10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />www.e welab.com Helena, MT 817-472-0711 • Billings, MT 800-735-4409 • Caspar, WY 888-235-0515 <br />,ta."nrEruAmaa. trill Gillette, WY 866-686-7175 • Rapid City, SD 886-672-1225 • College Station, TX 868-690-2218 <br />Page 16 of 25