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ENERGY <br />www.energylab.com <br />Awlytical &Wean Sim 1152 <br />Client: Cotter Corporation <br />Project: Schwartz GW 8/4/11 S25873- S25874 <br />Helena, MT 877 -472 -0111 • Billings, MT 800 - 735 -4489 • Casper, WY 888- 235 -0515 <br />Gillette, WY 866 - 886 -7175 • Rapid City, SD 888 -672 -1225 • College Station, 1X 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 09/13/11 <br />Work Order: C11080330 <br />Analyte <br />Count Result Units <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 <br />Sample ID: ICV <br />Nitrogen, Nitrate +Nitrite as N <br />Method: E353.2 <br />Sample ID: C11080330 -001G <br />Nitrogen, Nitrate +Nitrite as N <br />Sample ID: C11080330-001G <br />Nitrogen, Nitrate +Nitrite as N <br />Sample ID: LFB <br />Nitrogen, Nitrate +Nitrite as N <br />Sample ID: MBLK <br />Nitrogen, Nitrate +Nitrite as N <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Initial Calibration Verification Standard <br />21.2 mg /L 0.060 97 <br />Sample Matrix Spike Duplicate <br />1.06 mg /L <br />Sample Matrix Spike <br />1.06 mg /L <br />Laboratory Fortified Blank <br />1.00 mg /L <br />Method Blank <br />ND mg /L <br />Run: SUB- B170473 <br />0.010 103 90 110 <br />Run: SUB- B170473 <br />0.010 103 90 110 <br />Run: SUB- B170473 <br />0.010 102 90 110 <br />0.007 <br />90 110 <br />Run: SUB- B170473 <br />ND - Not detected at the reporting limit. <br />Analytical Run: SUB- B170473 <br />08/10/11 07:13 <br />Batch: B_R170473 <br />08/10/11 08:45 <br />0.2 10 <br />08/10/11 08:44 <br />08/10/11 07:15 <br />08/10/11 07:14 <br />Page 15 of 23 <br />