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www.ene &ab.com ? Helena, M 877472-0711 • Billings, MT 800-735-4409 • Casper, WY 888-235-0515 <br />AW#ftW FCvMM 9= 109 Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 08/15/10 <br />Project: Schwartzwalder Water Monitoring Program Work Order: C10070865 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A3112 B Batch: 26815 <br />Sample ID: MB-26815 Method Blank Run: CVAA_C203_100727A 07/26/10 16:40 <br />Mercury 5E-06 mg/L 1 E-06 <br />Sample ID: LCS-26815 Laboratory Control Sample Run: CVAA_C203_100727A 07/26/10 16:42 <br />Mercury 0.00502 mg/L 0.00010 100 90 110 <br />Sample ID: 010070865-001BMS Sample Matrix Spike Run: CVAA_C203_100727A 07/26/10 17:34 <br />Mercury 0.00453 mg/L 0.00010 90 85 115 <br />Sample ID: C10070865-001BMSD Sample Matrix Spike Duplicate Run: CVAA_C203_100727A 07/26/10 17:36 <br />Mercury 0.00420 mg/L 0.00010 84 85 115 7.4 10 S <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration S - Spike recovery outside of advisory limits. <br />Page 8 of 25