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Sequoia680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 rAX(415) 364-9233 <br /> 404 N Vgct Lane Walnut Creek,CA 94598 (510) 988 9600 rAX (510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 rAX (916)921 0100 <br /> GeoStrategles Inc v Client project ID ro`rmer Un6cal#0187 <br /> ,3164 Gold Camp Dr, Suite 240 Matrix Soli <br /> } Rancho Cordova, CA 95670 <br /> Attention Greg Gurss QC Sample Group 708-0811 Reported Sep 3, 1997; <br /> }mow+W+' r r n n + h u + + r rn r + + +++ +• k+vyn ♦ J t.,., t v n • rr + M +}4 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes Lead <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 6010 <br /> Analyst C Lee C Lee C Lee C Lee K Marchand <br /> Concentration <br /> Spiked 0 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 60 mg/kg 50 mg/kg <br /> LCS Batch# LCS082897 LCS082897 LCS082897 LCS082897 LCS082297 <br /> Date Prepared 08/28/97 08/28/97 08/28/97 08/28/97 08/22/97 <br /> Date Analyzed 08/28/97 08/28/97 08/28/97 08/28/97 08/29/97 <br /> Instrument I D # GCHP-1 GCHP-1 GCHP-1 GCHP-1 ICP-1 <br /> LCS % <br /> Recovery 103 96 97 96 92 <br /> Control Limits 70-130 70-130 70-130 70-130 80-120 <br /> ywm { . r t s +u + r r. + r . r 1 } • r v+, ` 7•+ } m �v t n vv }yr} 4♦ ti+ +» <br /> y S 1 , + , 4 r v ♦ ry v r <br /> MS/MSD <br /> Batch # 7080805 7080805 7080805 7080805 7080888 <br /> Date Prepared 08/28/97 08/28/97 08/28/97 08/28/97 08/22/97 <br /> Date Analyzed 08/28/97 08/28/97 08/28/97 08/28/97 08/29/97 <br /> Instrument I D # GCHP-1 GCHP-1 GCHP-1 GCHP-1 ICP-1 <br /> Matrix Spike <br /> % Recovery- 94 92 96 96 83 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 94 92 95 95 77 <br /> Relative % <br /> Difference 00 Go 1 0 10 7 5 <br /> Q OIA ANALYTIC L Please Note <br /> /] The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> �Z114 validation of sample batch results Due to matrix effects,the QC lcmits for IVIS/MSA's are advisory only <br /> Linda C Schneider and are not used to accept or reject batch results <br /> Project Manager/Sacramento Labora ory <br /> 7080811 GSI <3> <br /> r� <br />