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wwwmwgylab.com Helena, W 677472-0711 • Billings, W 800-7354489 • Casper, WY 888-235-011111 <br />An"W sore lm J Gillette, WY 866-686-7175 • Rapid City, SO 668-672-1225 • College Station, TX 886-680-2218 <br />QA/QC Summary Report <br />Revised Date: 11/23/10 <br />Client: Cotter Corporation Report Date: 11 /12/10 <br />Project: Schwartzwalder Water Monitoring Program Discharge Work Order: C10100590 <br /> <br />Analyte Co unt Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Batch: R139122 <br />Sample ID: LCS Laboratory Control Sample Run: ICI-C_101026A 10/26/10 18:14 <br />Chloride 9.24 mg/L 1.0 92 90 110 <br />Sample ID: MBLK Method Blank Run: ICI-C_101026A 10/26/10 18:32 <br />Chloride ND mg/L 0.01 <br />Sample ID: C10100594-002AMS Sample Matrix Spike Run: IC1-C_101026A 10/26/10 20:34 <br />Chloride 36.2 mg/L 1.0 111 80 120 <br />Sample ID: C10100594-002AMSD Sample Matrix Spike Duplicate Run: IC1-C_101026A 10/26/10 20:51 <br />Chloride 37.5 mg/L 1.0 118 80 120 3.6 20 <br />Method: E300.0 Batch: R139202 <br />Sample ID: LCS Laboratory Control Sample Run: IC2-C_101027A 10/27/10 23:13 <br />Sulfate 37.2 mg/L 1.0 93 90 110 <br />Sample ID: MBLK Method Blank Run: IC2-C_101027A 10/27/10 23:31 <br />Sulfate ND mg/L 0.2 <br />Sample ID: C10100674-001AMS Sample Matrix Spike Run: IC2-C_101027A 10/28/10 22:38 <br />Sulfate 3760 mg/L 16 94 80 120 <br />Sample ID: C10100674-001AMSD Sample Matrix Spike Duplicate Run: IC2-C_101027A 10/28/10 22:55 <br />Sulfate 3760 mg/L 16 94 80 120 0.0 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 15 of 22