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ENERGY <br />LAHORATORIES <br />Method: E353.2 <br />Sample ID: MBLK <br />Nitrogen, Nitrate +Nitrite as N <br />www.energylab.com <br />Mottical Excellence Since 1932 <br />Analyte Count Result Units <br />Method Blank <br />ND mg /L 0.005 <br />Sample ID: LFB Laboratory Fortified Blank <br />Nitrogen, Nitrate +Nitrite as N 1.04 mg /L <br />Sample ID: B13021533- 001AMS Sample Matrix Spike <br />Nitrogen, Nitrate +Nitrite as N 1.68 mg /L <br />Sample ID: B13021533- 001AMSD Sample Matrix Spike Duplicate <br />Nitrogen, Nitrate +Nitrite as N 1.65 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Helena, MT 877- 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888 -235 -0515 <br />Gillette, WY 866- 686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, TX 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 03/21/13 <br />Project: Schwartz SW 2/19/13 S26797 Work Order: C13020606 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB- B200231 <br />Sample ID: ICV Initial Calibration Verification Standard 02/22/13 08:34 <br />Nitrogen, Nitrate +Nitrite as N 22.6 mg /L 0.060 103 90 110 <br />Run: SUB- B200231 <br />Batch: B_R200231 <br />02/22/13 08:35 <br />Run: SUB- B200231 02/22/13 08:36 <br />0.010 106 90 110 <br />Run: SUB- B200231 02/22/13 12:11 <br />0.010 112 90 110 S <br />Run: SUB- B200231 02/22/13 12:12 <br />0.010 109 90 110 1.9 10 <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 18 of 26 <br />