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www.energylab.com Helena MT 877-472-0711 • Billings, MT 800-735-4489 + Casper WY 888 235.0515 <br />_ / i raryt cs1 Excrt7ancrSi rcr 145? Gillette, WY 866-686.7175 m Rapid City, SD 888-672-1225 o 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 /oREC Low Limit High Limit RPD RPDLimil Qual <br />Method: E353.2 Analytical Run: SUB-6157194 <br />Sample ID: ICV Initial Calibration Verification Standard 11/15/10 09:17 <br />Nitrogen, Nitrate+Nitrite as N 30.2 mg/L 0.20 103 90 110 <br />Method: E353.2 Balch: B,.1`1157194 <br />Sample ID: MBLK Method Blank Run: SUB-8157194 11/15/10 09:18 <br />Nitrogen, Nitrate+Nitrite as N ND mg/L 0.004 <br />Sample ID: LFB Laboratory Fortified Blank Run: SUB-6157194 11/15/10 09:19 <br />Nitrogen, Nitrale+Nitrite as N 1.01 mg/L 0.010 103 90 110 <br />Sample ID: C10110203-001G Sample Matrix Spike Run: SUB-6157194 11/15/10 09:42 <br />Nitrogen. Nitrate+Nitrite as N 0.998 mg/L 0.010 102 90 110 <br />Sample ID: C10110203.001G Sample Matrix Spike Duplicate Run: SUB-6157194 11/15110 09:43 <br />Nitrogen, Nitrale+Nitrite as N 0.997 mg/L 0.010 102 90 110 0.1 10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 28 of 43