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wWWffer®dab.eem x Helena, MT 877-472-0711 • Billings, W 800-735-4409 • Casper, WY 888-235-0015 <br />A fseaAYaa3Aoa tl6l r l(atta,'+n 866-686-7175 Rapid Gity, 5D.888-872-1225• College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 09/16/10 <br />Project: Schwartzwalder Water Monitoring Program Work order: C10080790 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB-B153060 <br />Sample ID: ICV Initial Calibration Verification Standard 08/30/10 08:58 <br />Nitrogen, Nitrate+Nitrite as N 29.8 mg/L 0.20 101 90 110 <br />Method: E353.2 Batch: B_R153060 <br />Sample ID: MBLK Method Blank Run: SUB-8153060 08/30/10 08:59 <br />Nitrogen, Nitrate+Nitrite as N ND mg/L 0.01 <br />Sample ID: LFB Laboratory Fortified Blank Run: SUB-B153060 08/30/10 09:00 <br />Nitrogen, Nitrate+Nitrite as N 1.02 mg/L 0.010 105 90 110 <br />Sample ID: B10082197-004DMS Sample Matrix Spike Run: SUB-B153060 08/30/10 12:42 <br />Nitrogen, Nitrate+Nitrite as N 1.09 mg/L 0.010 110 90 110 <br />Sample ID: B10082197-004DMSD Sample Matrix Spike Duplicate Run: SUB-B153060 08/30/10 12:44 <br />Nitrogen, Nitrate+Nitrite as N 1.05 mg/L 0.010 106 90 110 3.6 10 <br />Method: E353.2 Batch: R137103 <br />Sample ID: MBLK-1 Method Blank Run: TECHNICON_100909A 09/09/10 11:31 <br />Nitrogen, Nitrate+Nitrite as N ND mg/L 0.04 <br />Sample ID: LCS-2 Laboratory Control Sample Run: TECHNICON_100909A 09/09/10 11:33 <br />Nitrogen, Nitrate+Nitrite as N 2.49 mg/L 0.10 100 90 110 <br />Sample ID: C10081053-008DMS Sample Matrix Spike Run: TECHNICON_100909A 09/09/10 11:48 <br />Nitrogen, Nitrate+Nitrite as N 2.02 mg/L 0.10 101 90 110 <br />Sample ID: 010081053-008DMSD Sample Matrix Spike Duplicate Run: TECHNICON_100909A 09/09/10 11:51 <br />Nitrogen, Nitrate+Nitrite as N 2.07 mg/L 0.10 103 90 110 2.4 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 23 of 37