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i <br /> i <br /> Entech Analytical Labs,Inc <br /> 525 Del Rey Ave, Suite E <br /> Sunnyvale, CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> Volatile Organic Compounds <br /> QC Batch# 8240W981007 <br /> Matrix Water Date analyzed 10/14/98 <br /> Units <br /> Spiked Sample Blank Spike <br /> ARAMETER Method# SA SR SP SP SPD SPD RPD <br /> ERPD <br /> LIMITS <br /> %R %R %R <br /> 11,1-Dichloroethene 1 624/8240 1 25 r ND 1 25 1 99% 1 26 r 104% I 51 1 25 1 50-150 i <br /> Methyl-tert-butyl ether 624/8240 j 25 ND f 29 114% j 30 12010 4 8 I <br /> ° i � 25 � 50-150 1 <br /> Benzene 624/8240 11 25 ND 27 106% 26 104% 1 9 25 50-150 1 <br /> ]Trichloroethene 1 624/8240 1 25 I ND 1 25 1 100% 9 26 1 104% 1 35 1 25 1 50-150 i <br /> ,Toluene 624/8240 25 ND 2496/°1 ° ] I 1 <br /> 1 1 25 r 100% 1 41 f 25 i 50-150 � <br /> 'Chlorobenzene 624/8240 25 11 ND 24 95% 25 100% 49 25 f 50-150 ] <br /> '1,2,4-Tnchlorobenzene 1 624/8240 I 25 1 ND ] 25 1 100% 1 28 I 110% 1 9 1 1 25 1 1 <br /> ] ] 1 1 + ] 1 ] ] 50-150 1 <br /> I I <br /> Definition of Terms <br /> na Not Analyzed in QC batch <br /> SA Spike Added <br /> SR Sample Result <br /> RPD(%) Duplicate Analysis -Relative Percent Difference <br /> SP Spike Result <br /> SP(%R) Spike% Recovery <br /> SPD Spike Duplicate Result <br /> SPD(%R) Spike Duplicate%Recovery <br /> NC Not Calculated <br />