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ENERGY <br />Trust our People. Trust our Data. <br />Billings, MT 800.735.4489 • Casper, WY 888.235.0515 <br />College Station. TX 888.690.2218 • Gillette, WY 866.686.1175 • Helena, MT 877.472.0111 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 10/19/15 <br />Project: Schwartz -SW 10/02/15 S28439 -S28441 Work Order: C15100183 <br />Analyte <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 <br />Lab ID: MBLK Method Blank Run. FIA201-C_151012A <br />Nitrogen, Nitrate+Nitrite as N ND mg/L 0.007 <br />Lab ID: LFB Laboratory Fortified Blank Run FIA201-C_151012A <br />Nitrogen, Nitrate+Nitrite as N 1.86 mg/L 0 10 95 90 110 <br />Lab ID: C15100181-001DMS Sample Matrix Spike Run. FIA201-C_151012A <br />Nitrogen, Nitrate+Nitrite as N 5 54 mg/L 0.20 97 90 110 <br />Lab ID: C15100181-001 DMSD Sample Matrix Spike Duplicate <br />Nitrogen, Nitrate+Nitrite as N 5.37 mg/L <br />Batch R205262 <br />10/12/15 13.19 <br />10/12/15 13.21 <br />10/12/15 13.26 <br />Run. FIA201-C_151012A 10/12/15 13.27 <br />0 20 93 90 110 3.1 10 <br />Lab ID: C15100245-001BMS Sample Matrix Spike Run. FIA201-C_151012A <br />Nitrogen, Nitrate+Nitrite as N 16 0 mg/L 0.50 92 90 110 <br />Lab ID: C15100245-001BMSD Sample Matrix Spike Duplicate <br />Nitrogen, Nitrate+Nitrite as N 15 9 mg/L <br />10/12/15 13 57 <br />Run. FIA201-C_151012A 10/12/15 1359 <br />0 50 91 90 110 0 6 10 <br />Qualifiers: <br />RL - Analyte reporting limit <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 11 of 19 <br />