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Sequoia 680 Chesapeake Dnvc Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiset Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510) 988 9673 i <br /> 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Analytical <br /> l <br /> i <br /> i , r n+. { {V r r r w w r ` + r.t r' O+•k„ l <br /> f Gettler Ryan/Geostrategles Client Pr"eclfb r bnocal 4855 18 J <br /> 3164 Gold Camp Drive, #240 Matrix Liquid <br /> Rancho Cordova, CA 95670 <br /> Attention Greg Gurss Work Order# 9712G67 -01, 02 Reported Jan 5, 1998' <br /> r + vti r } + , r♦ r ry `moi h v x v v 3{ + iiir { v .$ <br /> QUALITY CONTROL DATA REPORT <br /> 1 <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch# GC123197BTEX02A GC123197BTEX02A GC123197BTEX02A GC123197BTEX02A GC123197BTEX02A <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 #. 9712D1506 971ZD1506 9712D1506 9712D1505 9712D1506 <br /> Sample Conc N D N D N D N D N D <br /> Prepared Date. 12/31/97 12/31/97 12/31/97 12/31/97 12/31/97 <br /> Analyzed Date 12/31/97 12/31/97 12/31/97 12/31/97 12/31/97 <br /> Instrument I D #. GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc Spiked 10 ug/L 10 jug/L 10 ug/L 30 ug/L 60 ug/L <br /> Result 8 1 80 82 25 59 <br /> MS % Recovery 81 so 82 B3 98 <br /> ie Dup Result 8 5 84 87 26 63 <br /> MSD %Recov : 85 84 87 87 105 <br /> RPD. 48 49 59 39 66 <br /> RPD Limit 0-25 0-25 0-25 025 0-25 <br /> LCS # BLK123197 BLK123197 BLK123197 BLK123197 BLK123197 <br /> Prepared Date 12/31/97 12/31/97 12/31/97 12/31/97 12/31/97 <br /> Analyzed Date 12/31/97 12/31/97 12/31/97 12/31/97 12/311/97 <br /> Instrument l D # GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc Spiked 10ug/L 10ug/L 10}ig/L 30ug/L 60ug/L <br /> LCS Result 8 4 83 e 6 26 61 <br /> LCS % Recov . 84 83 86 87 102 <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 /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> V., <br /> LYTICAL 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 /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> ger **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9712G67 GET <1 <br />