2009-05-19_REVISION - M1977416 (37)

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ENERGYLABORAWR/ES, INC -2393 Salt Creek Highway (82801) • P.O. Box 3258 • Casper, WY82602 Toll Free 888 235 0515 • 307 235 0515 • Fax 307.234.1839 • casper@energylab.com - www.energylab.com QA/QC Summary Report nt: Denison Mines (USA) Corp ject: West Sunday Mine Report Date: 04/02109 Work Order: C09030572 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLImit Qual Method: E200.7 Batch: R116454 Sample ID: LRB 9 Method Blank Run: ICP3-C_090331B 03/31/0917:17 Aluminum 0.2 mg/L 0.01 Boron ND mg/L 0.02 Calcium 0.3 mg/L 0.2 Iron 0.07 mg/L 0.01 Lithium ND mg/L 0.002 Magnesium 0.2 mg/L 0.2 Nickel ND mg/L 0.009 Potassium ND mg/L 0.03 Sodium ND mg/L 0.1 Sample ID: LFB 2 Laboratory Fortified Blank Run: ICP3-C_090331B 03/31/09 17:22 Aluminum 4.47 mg/L 0.10 86 80 120 Boron 0.905 mg/L 0.10 91 80 120 Calcium 48.1 mg/L 0.50 96 80 120 Iron 4.79 mg/L 0.030 95 80 120 Lithium 1.06 mg/L 0.10 106 80 120 Magnesium 46.1 mg/L 0.50 92 80 120 Nickel 0.943 mg/L 0.050 94 80 120 tessium 47.9 mg/L 0.50 96 80 120 -um 46.7 mg/L 0.50 93 80 120 Sample ID: C09030573-003SMS 9 Sample Matrix Spike Run: ICP3-C_090331 B 03/31/0919:38 Aluminum 3.80 mg/L 0.10 70 130 A Boron 0.454 mg/L 0.10 89 70 130 Calcium 124 mg/L 1.0 67 70 130 S Iron 2.60 mg/L 0.030 70 130 A Lithium 0.509 mg/L 0.10 50 70 130 S Magnesium 50.4 mg/L 1.0 84 70 130 Nickel 0.434 mg/L 0.050 85 70 130 Potassium 45.6 mg/L 1.0 88 70 130 Sodium 51.4 mg/L 1.0 90 70 130 Sample ID: C09030673-0038MSD 2 Sample Matrix Spike Duplicate Run: ICP3-C_09033113 03/31/0919:42 Aluminum 4.29 mg/L 0.10 70 130 12 20 A Boron 0.540 mg/L 0.10 106 70 130 17 20 Calcium 136 mg/L 1.0 91 70 130 9.3 20 Iron 2.93 mg/L 0.030 70 130 12 20 A Lithium 0.533 mg/L 0.10 52 70 130 4.6 20 S Magnesium 61.3 mg/L 1.0 105 70 130 19 20 Nickel 0.513 mg/L 0.050 101 70 130 17 20 Potassium 51.9 mg/L 1.0 100 70 130 13 20 Sodium 61.5 mg/L 1.0 110 70 130 18 20 -_- ifiers: - Analyte reporting limit. A - The analyte level was greater than four times the spike level. In accordance with the method % recovery is not calculated. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration S - Spike recovery outside of advisory limits.