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Entech Analytical Labs,Inc. 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> METHOD: Flame Atomic Absorption <br /> QC Batch#: SM970804 Date Analyzed: 08/07/97 <br /> Matrix: Soil/Sand Extraction Method: EPA 30f0 <br /> Units: mg/Kg mg/KgQuality Control Sam le: D12347 <br /> PARAMETER i Method# MB SA € SR SP SP SPD SPD RPD QC LIMITS <br /> mg/Kg mg/Kg mg/Kg mg/Kg %R m %R %R <br /> ,Antimony 7040 <0.5 i na na na na i na i na i na 50-150 i <br /> :Barium 7080 <0.5 na na na na na na na 50-150 <br /> :Beryllium 1 7090 1 <0.5 i na i na i na i na i na i na i na 1 50-150 <br /> 7130 <0.5 <br /> :Cadmium : : : na i na i na na na na i na i 50-150 i <br /> Chromium 7190 <0.5 na na na na na na na 50450 <br /> ,Cobalt i 7200 <0.5 na i na na na i na na i na 1 50-150 1 <br /> :Copper : 7210 : <0.5 : na : na : na : na : na : na : na 50-150 : <br /> Lead 7420 <0.5 1.0 0.0 1.0 98 1.0 102 3.4 50-150 <br /> :Maganese 1 7460 <0.5 na na na na na na na 50-150 <br /> :Molybdenum : 7480 : <0.5 : na : na : na : na : na : na : na : 50-150 : <br /> Nickel 7520 <0.5 na na na na na na na 50-150 <br /> :Silver 7760 <0.5 1.0 0.0 1.1 107 1.1 107 0.4 50-150 <br /> :Thallium 1 7840 1 <0.5 i na i na i na i na i na i na i na 1 50-150 <br /> Vanadium i 7910 <0.5 <br /> : : na : na : na i na : na : na : na : 50-150 i <br /> :Zinc 7950 <0.5 na na na na na na na 50-150 <br /> Note: LCS and LCSD results reported for the following Parameters: <br /> Acceptable LCS and LCSD results are reported when matrix interferences cause MS and MSD results to fall outside established QC Limits <br /> Definition of Terms: <br /> na: Not Analyzed in QC batch <br /> MB: Method Blank <br /> SA: Spike Added <br /> SR: Sample Result <br /> SP: Spike Result <br /> SP(%R): Spike%Recovery <br /> SPD: Spike Duplicate Result <br /> SPD(%R): Spike Duplicate%Recovery <br />