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Oitech Analytical Labs,Inc 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> METHOD ICP <br /> QC Batch# SM980710 Date Analyzed 07/17/98 <br /> Matrix Solid Extraction Method EPA 3050 <br /> Units mgfkg Spiked Sample E13177 <br /> EARAME:TER Method# MB SA SR SP SP SPD SPD RPD QC LIMITS <br /> m mgtkg m m %R m %R RPD %R <br /> 'Antimony ' 6010 ' <0 50 ' 50 ' na I na ' na ' na ' na ' na ' 250 1 63-112 ' <br /> i 1 I I I I I 1 I I I I I <br /> (Arsenic 1 6010 1 <0 50 1 50 1 23 1 47 1 89 1 46 1 86 1 25 1 250 1 55-117 I <br /> ,Banum i 6010 i <0 50 i 50 i na i na na na i na na i 250 i 59-120 <br /> ,Beryllium ' 6010 1 <0 50 ' 50 ' na 1 na ' na ' na ' na ' na I 250 1 66-114 ' <br /> i I I I I I I I I I I I ! <br /> {Cadmium 1 6010 1 <0 50 1 50 1 00 1 46 1 93 1 45 1 91 1 24 1 250 1 70-104 1 <br /> E I I I I I I I I 1 I l <br /> 'Chromium 1 6010 I <0 50 I 50 1 45 1 55 ii 101 1 52 i 94 I 66 I 2.50 I 60-122 1 <br /> (Cobalt i i 6010 1 <0 50 ' 50 1 na 1 na na 1 na 1 na r na I 250 1 60-114 1 <br /> r I I I I 1 I I I 1 I r <br /> (Copper 1 6010 1 <0 50 1 50 1 na I na I na I na I na I na 1 250 1 48-131 1 <br /> 1Lead 1 6010 <0 50 I I I I I I I I I l <br /> I 50 1 23 I 44 i 94 ' 48 I 91 I 26 I 250 I 60-110 i <br /> 'Molybdenum i 6010 I <0 50 1 50 I na I na i na 1 na 1 na 1 na i 250 1 48-1I9 1 <br /> # Y I I I I I 1 I I I 1 I I <br /> 'Nickel ' 6010 1 <0 50 ' 50 ' 26 1 56 i 106 ' 52 1 99 1 65 ' 250 1 54-124 1 <br /> I I I I I 0fivI I I 1 I i <br /> lenium i 6010 I <0 50 I 50 i na I na I na I na I na I na I 250 I 52-113 i <br /> er 1na na f 6010 �1 0 50 1 50 na 1 1 na 1 na na 1 1 1 1 250 1 56-117 1 <br /> I I I I I I I I l i I I i <br /> ,Thallium 1 6010 1 <0 50 ' 50 ' na 1 na 1 na 1 na ' na 1 na 1 250 1 60-112 ' <br /> l f I I I I I I I I I I I <br /> iVanadium 1 6010 I <0 50 1 50 1 na I na I na i na i na I na 1 250 I 51-130 I <br /> 1 i1 i I 1 1 1 i 109i 15 7I 25 01 60-118 <br /> ,Zmc 6010 <0 50 28 81 1 <br /> I <br /> l 1 I I I I I I I f i i I <br /> Note LCS and LCSD results reported for the following Parameters <br /> None <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 />