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Entech Analytical Labs, Inc. <br />525 Del Rey Avenue, Suite E <br />Sunnyvale, CA 94086 <br />QUALITY CONTROL RESULTS SUMMARY <br />METHOD: ICP <br />QC Batch #: SM981112 <br />Matrix: Solid <br />SP <br />1 SP <br />I SPD <br />SPD <br />Units: in <br />QC LIMITS <br />mg/kg <br />= %R <br />mg/Kg <br />%R <br />RPD <br />%R <br />na <br />PARAMETER ; Method # € <br />MB <br />SA <br />SR <br />25.0 <br />i 70-102 <br />m <br />Malm <br />1 na 1 <br />,Antimony i <br />6010 11 <br /><0.50 <br />50. <br />na <br />°Arsenic ° <br />6010 1 <br /><0.50 <br />1 50. 1 <br />na <br />,Barium <br />6010 , <br /><0.50 <br />50. <br />na <br />,Beryllium i <br />6010 i <br /><0.50 <br />50. <br />na <br />°Cadmium ° <br />6010 ° <br /><0.50 <br />° 50. ° <br />na <br />,Chromium i <br />6010 , <br /><0.50 <br />i 50. i <br />na <br />'Cobalt ° <br />6010 ° <br /><0.50 <br />° 50 ° <br />na <br />'Copper ° <br />6010 ° <br /><0.50 <br />' 50. ° <br />na <br />,Lead i <br />6010 i <br /><0.50 <br />i 50. i <br />0.0 <br />,Manganese <br />6010 i <br /><0.50 <br />50. <br />na <br />:Molybdenum ° <br />6010 ° <br /><0.50 <br />° 50. ° <br />na <br />,Nickel 1 <br />6010 1 <br /><0.50 <br />1 50. 1 <br />na <br />,Selenium , <br />6010 , <br /><0.50 <br />, 50. , <br />na <br />'Silver ° <br />6010 ° <br /><0.50 <br />° 50. ° <br />na <br />,Thallium i <br />6010 1 <br /><0.50 <br />1 50. 1 <br />na <br />,Vanadium , <br />6010 , <br /><0.50 <br />, 50. , <br />na <br />,Zinc ° <br />6010 ° <br /><0.50 <br />° 50. ° <br />na <br />1 1 <br />1 <br />° 66-109 <br />1 1 <br />1 na <br />1 na 1 <br />na 1 <br />na <br />1 25.0 <br />1 50-121 <br />Note: LCS and LCSD <br />results reported for the following Parameters: <br />All <br />na , <br />na <br />, 25.0 <br />, 62-133 <br />Acceptable LCS and LCSD results are reported when matrix interferences cause MS and MSD results to fall outside <br />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 />Date Analyzed: 11/16/98 <br />Extraction Method: EPA 3050 <br />Spiked Sample: Blank Spike <br />SP <br />1 SP <br />I SPD <br />SPD <br />RPD <br />QC LIMITS <br />mg/kg <br />= %R <br />mg/Kg <br />%R <br />RPD <br />%R <br />na <br />i na <br />i na i <br />na i <br />na <br />25.0 <br />i 70-102 <br />na <br />1 na <br />1 na 1 <br />na 1 <br />na <br />1 25.0 <br />1 61-113 <br />na <br />' na <br />, na <br />na , <br />na <br />25.0 <br />, 73-110 <br />na <br />° na <br />° na ° <br />na ° <br />na <br />° 25.0 <br />° 76-101 <br />na <br />° na <br />° na ° <br />na ° <br />na <br />° 25.0 <br />° 73-100 <br />na <br />i na <br />i na , <br />na i <br />na <br />, 25.0 <br />, 67-108 <br />na <br />° na <br />° na ° <br />na ° <br />na <br />° 25.0 <br />° 74-102 <br />na <br />° na <br />° na ° <br />na ° <br />na <br />1 25.0 <br />1 64-119 <br />50. <br />a 101 <br />i 49. i <br />98 i <br />2.9 <br />i 25.0 <br />i 62-116 <br />na <br />i na <br />na i <br />na i <br />na <br />25.0 <br />62-116 <br />na <br />° na <br />° na ' <br />na ° <br />na <br />° 25.0 <br />° 49-119 <br />na <br />i na <br />i na i <br />na i <br />na <br />i 25.0 <br />i 70-121 <br />na <br />i na <br />, na , <br />na , <br />na <br />, 25.0 <br />, 53-126 <br />na <br />° na <br />° na ° <br />na ° <br />na <br />° 25.0 <br />° 66-109 <br />na <br />1 na <br />1 na 1 <br />na 1 <br />na <br />1 25.0 <br />1 50-121 <br />na <br />, na <br />, na , <br />na , <br />na <br />, 25.0 <br />, 62-133 <br />na <br />° na <br />1 <br />, na ° <br />1 1 <br />na ° <br />1 <br />na <br />° 25.0 <br />1 <br />° 67-113 <br />1 <br />Acceptable LCS and LCSD results are reported when matrix interferences cause MS and MSD results to fall outside <br />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 />