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vi%w.energylab.com Helena, MT 877-472-0711 - Billings, MT 800-735-4489 - Casper, WY 888-235-0515 <br />Arrarytlcsl ExcallaaceSincs 1852 j Gillette, WY 866-686-7175 - Rapid City, SO 888-672-1225 - College Station, TX 688-590-221 a <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 12/09/10 <br />Project: Schwartzwaider Wa ter Sampling Program-Ground Water Work Order: 010110027 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qua[ <br /> Analytical Run: SUB-13157044 <br />Method: E353.2 <br />Sample ID: ICV Initial Calibration Verification Standard 11/11/10 10:48 <br />Nitrogen, Nitrate+Nitrite as N 30.1 mg/L 0.20 102 90 110 <br /> 11157044 <br />Batch: B <br />Method: E353.2 _ <br />Sample ID: MBLK Method Blank Run: SUB-13157044 11/11/10 10:49 <br />Nitrogen, Nilrate+Nitrite as N ND mg/L 0.004 <br />Sample ID: LFB Laboratory Fortified Blank Run: SUB-8157044 11/11/10 10:51 <br />Nitrogen, Nitrate+Nitrite as N 1.00 mg/L 0.010 102 90 110 <br />Sample ID: C10110027-001G Sample Matrix Spike Run: SUB-6157044 11/11/10 11:13 <br />Nitrogen, Nitrate+Nitrite as N 1.02 mg/L 0.010 103 90 110 <br />Sample ID: C10110027-001G Sample Matrix Spike Duplicate Run: SUB-6157044 11/11/10 11:14 <br />Nitrogen, Nitrate+Nitrite as N 1.02 mg/L 0.010 103 90 110 0.3 10 <br />Qualifiers: <br />RL - Analyie reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 17 of 26