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Sequoia 68^'hesaprake Dave Recti.,00d Cary CA 940' (650) 364 9604 FAX(650) 364 9233 <br /> 4 W1get bane Walnut Creek CA 94: (925)58.8 9600 FAX(925)988-9673 <br /> �,� Analytical ,Quer Avenue Su[tt 8 SACramertW CA 95834 (916)921 9600 FAX(916)921 0100 <br /> 1455 McDowell Btvd Nortfl Ste 0 Petaruma,U 94954 (707)792 1865 FAX(707)792 0342 <br /> 'Gettler Ryan/Geostrategtes v Client Project ID M5886/18137 85,'2701 W March <br /> *47 Sierra Court, Ste J Matrix Liquid <br /> blin, CA 94568 <br /> Attention Deanna Harding Work Order # 9812342 03-04 Reported Dec 22, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyt Xylenes BTEX as TPH <br /> Benzene <br /> QC Batch# GC121498802C05A GC121498802005A GC12149UO2005A GC1214988020C5A GC1214MO2005A <br /> Analy Method EPA 8020 EPA 8020 EPA 8820 EPA 8020 EPA Sol SM <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst C Westwater C Westwater C Westwater C Westwa•er C Westwater <br /> MS/MSD # 8120559 8120599 8120599 8120559 8120599 <br /> Sample Conc • N D N o N 0 N D NO <br /> Prepared Date 12/14/s8 12/14/98 12/14/98 12/14/96 12/14/98 <br /> Analyzed Date 12/14/98 12/14/98 12/14/98 12/14/98 12/14/98 <br /> Instrument 1.0 # HP5 HP5 HIPS HP5 HPS <br /> Conc Spiked 20 u9/L 20ug/L 20ug/L 60ug/L Wpg <br /> ug/L <br /> Result 18 19 19 60 280 <br /> MS % Recovery 90 95 95 1C0 104 <br /> Dup Result 19 19 19 61 290 <br /> JOMSD % Recov 95 95 95 102 107 <br /> RPD 54 00 00 17 35 <br /> RPO Limit 0-20 0-20 0.20 azo 0-50 <br /> LCS # LCS121498 LCS121498 LCS121498 LCS121498 LCS121498 <br /> Prepared Date 12/14/98 12/14/98 12/13/98 12/14/98 12/14/98 <br /> Analyzed Date 12/14/93 12/14/98 12/14/98 12/14/98 12/14/98 <br /> instrument 10 # HP5 HIPS HP5 HP5 <br /> HP5 <br /> Conc. Spiked 20pg/L 20pg/L 20pg/L 60ug/L 270ug/L <br /> LCS Result is 19 19 59 270 <br /> LCS % Recov 90 s5 90- 9a 1C4 <br /> LCS 70130 70-130 70-130 70-130 <br /> Control Limits 50-150 <br /> Please Nate <br /> The LCS is a control sample a!known,interferent free matrix tha'is analyzed using the same reagent, <br /> S 01 ALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> # 27 fortdiled with known quantities of specific compounds and subjected to the entre analytical procedure If <br /> the recovery of analytes from the matrix spike does not fall within speafied certroi fimltn due to matrix <br /> lnter!erence,the LCS recovery is to be used to validate the batch <br /> od Gr nlcher <br /> of Manager "MS-Matrlx Spike,MSD-NIS Duphwe, RPD-R.eistlie%Diftersrcj 9812342 GET <2> <br />