1997-04-24_REVISION - M1977493 (18)

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• PREP BLANK/IC8 &LABORATORY CONTROL SAMPLE/ICV Client: Climax Molybdenum Company Report Date: 7/12/96 Project: CL1532 Date Received: 5/30/96 Matrix: Surface Water Lab Nos.: L9748-01 through 05 Concentration Units: /L Preparation Blank Laboratory Control Sample or ICV Method Analysis Observed True Observed Recovery Analyte Date Value C Value Value C % Arsenic,total recoverable 200.8 06/19/96 0.02 U 0.10 0.093 93.0 Boron dissolved 200.7 06/10/96 0.01 U 1.00 0.982 98.2 Cadmium,dissolved 200.8 6/18/96 0.0002 U 100.00 101.45 101.5 Calcium,dissolved 200.7 06/10/96 0.2 U 51.00 50.93 99.9 Chromium,dissolved 200.7 06/10/96 0.01 U 1.00 0.989 98.9 Chromium,hexavalent SM3500 5130/96 0.05 U NA Chromium,hexavalent dies. SM3500 5/30/96 0.05 U NA Chromium,total recoverable 200.7 06/06/96 0.02 U 1.00 0.963 96.3 Copper,dissolved 200.7 06/10/96 0.01 U 1.00 1.00 100.0 Copper,dissolved 200.8 6/18/98 0.001 U 100.00 99.84 99.8 Iron,dissolved 200.7 06/21/96 0.01 U 1.00 0.953 95.3 Iron,total recoverable 200.7 08/24/96 0.01 U 1.00 1.073 107.3 Lead dissolved 200.8 6118/96 0.00011 U 100.00 99.57 99.6 M nesium,dissolved 200.7 06/10/96 0.2 U 51.00 52.02 102.0 Manganese,dissolved 200.7 06/21/96 0.005 U 1.00 0.966 96.6 Manganese,total recoverable 200.7 06/24/96 0.005 U TOO 1.008 100.8 Mercury,total recoverable 245.1 06/04/96 0.0002 U 0.0025 0.0029 116.0 Nickle,dissolved 200.7 06/10/96 0.01 U 1.00 0.997 99.7 Selenium,total recoverable SM3500-Se 06/10/96 0.001 U 0.02 0.0222 111.0 • Zinc,dissolved 1 200.7 1 06/10/96 1 0.01 JU 1 1.00 0.995 99.5 Chloride 325.2 6/3/96 1 U 51.6 50.4 97.7 Conductivity 120.1 6/1/96 1.76 8 1413 1358 96.1 Cyanide,free 335.3 6/4/96 0.01 U NA Nitrogen. ammonia M350 6/5/96 0.05 U 1 1 100.0 PH 150.1 5/30/96 6.92 9.2 8.97 97.5 Sulfide SM427C 5130/96 0.02 U NA TSS 160.2 1 5/30198 1 5 U 1 268.0 1 246 1 1 91.8 Page 3 of 4