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Entech Analytical Labs, Inc 525 Dei Rey Avenue,Suite E <br /> Sunnyvale, CA 94086 <br /> QUALITY CONTROL RESULTS SUNMARY <br /> Y <br /> Volatile Organic Compounds <br /> Laboratory Control Sample <br /> QC Batch# WMS000515 Date analyzed 05/15/00 <br /> Matrix Liquid Spiked Sample Blank Spike <br /> Units 4g/L <br /> PAR,-UMETER Method;f SA SR SP SP SPD SPD RPD QC LIMITS <br /> ug/L 4gfL 4g/L %R µgil- %R RPD ; %R <br /> 11,1-Dichloroethene 1 8240/8260 140 1 ND 36 8 1 92 1 37 3 1 93 1 3 1 25 1 50-150 <br /> I I t 1 1 I I I 1 1 1 1 <br /> I I I 1 1 1 1 i 1 1 <br /> 1Metlivi-tert-butyl ether 1 8240/8260 1 40 ND 1 33 8 1 85 t 1 355 11 89 1 49 1 25 50-150 1 <br /> 1Benzene 1 8240/8260 1 40 ND 1 372 1 93 I 1 3-5 11 94 1 0 8 : 25 : 50-150 : <br /> Fnchloroethene 1 8240/8260 1 40 1 ND 1 387 1 97 1 39 7 1 99 : 2 6 1 25 : 50-150 : <br /> 1 <br /> :Toiuene 1 8240/8260 1 40 1 ND : 37 7 1 94 1 377 1 94 : 0 0 1 25 1 50-150 : <br /> 1Chlombenzene 1 8240/8260 1 40 ND 1 399 1 100 1 399 1 100 1 0 0 1 25 1 50-150 1 <br /> 1 <br /> :Surrogates p J 1 t 7 1 1 1 1 F 1 1 I <br /> :Surra ates <br /> 1 <br /> :Toluene-d3 1 8240/8260 1 1 95% 1 94% 1 1 94% 1 1 65-135 : <br /> Dbromofluoromethane , 8240/8260 t 1 109/ 103/ Ii 104/ f <br /> 65-135 <br /> 1 f t 1 1 1 1 t 1 1 1 <br /> 14-Bromotluarobenzene 1 8240/8260 1 1 89% : 97% : 1 95% 65-135 : <br /> I t t 1 I 1 1 1 E 1 1 I <br /> ;MTBE-d3 1 8240/8260 1 1 95% 1 90% i 1 93% 1 : 1 1 65-135 1 <br /> t F 1 1 1 1 1 t 1 1 1 <br /> Definition of Terms <br /> na Not Analyzed in QC batch <br /> SA Spike Added <br /> SR Sample Result <br /> RPD(%) Dupitcate 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 />