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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> frol� Analytical <br /> A " A� . . <br /> _ Blaine Tech Services, Inc Client Project ID ry Shell Stockton /,971009-G20 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 f' <br /> r Attention _Fran Thie _ Work Order# 9710596-01-02 N Reported Oct 17, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte` Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GC101397BTEX02A GC101397BTDCO2A GC101397BTEX02-A GC1013978TEX02A GC101397BTEX02A <br /> Analy. Method' EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method. EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: A. Miraftab A.Miraftab A Miraftab A.Miraftab A.Miraftab <br /> MS/MSD # 971023103 971023103 971023103 971023103 971023103 <br /> Sample Cone.: N D N D N D N D N D <br /> Prepared Date: 10/13/97 10/13/97 10/13/97 10/13/97 10/13/97 <br /> Analyzed Date: 10/13/97 10/13/97 10/13/97 10/13/97 10/13/97 <br /> Instrument 1.13 #' GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked. 10pg/L 10ug/L 10ug/L 30ug/L 60ug/L <br /> Result: 10 9 6 9 8 29 65 <br /> MS % Recovery: 100 95 98 97 1108 <br /> Dup. Result: 9 6 9 4 95 29 63 <br /> MSD %Recov.: 96 94 95 97 105 <br /> RPD: 41 21 31 00 31— <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> — � -vv r r r ry ~r v .. v x ry rn r ry ry r »nv v rJt r 4 { r r v ♦ v w rvnrvvJ_� <br /> LCS#: BLK101397 BLK101397 BLK101397 BLK101397 BLK101397 <br /> Prepared Date: 10/13/97 10/13/97 10/13/97 10/13/97 10/13/97 <br /> Analyzed Date: 10/13/97 10/13/97 10/13/97 10/13/97 10/13/97 <br /> Instrument I D.#: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked: 10 pg/L 10 ug/L 10 ug/L 30 ug/L 60 ug/L <br /> LCS Result: w9 5 91 92 28 61 -- <br /> LCS % Recov.: 95 91 92 93 102 <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 70-130 <br /> _ Control Limits <br /> i <br /> i <br /> I _ _ <br /> Please Note <br /> The LCS is a control sample of known,Interferent-free matrix that Is analyzed using the same reagen <br /> S qALY TICAL preparation,and analytical methods employed for the samples The matrix spike Is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure if <br /> t,_ ••from tt.g'r"t^x e 'Le does r of fail..,.+F,�r, ec,f.ari rnn+rnl limiig di ig f%ma+nv <br /> rio rca arar'y i+i ai�airw., .��.+ _p �r_- <br /> lnterference,the LGS recovery is to be used to validate the batch <br /> P gy enner <br /> Prod t Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9710596 BLA ¢27 <br />