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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Line Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> ID I Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)926-0100, <br /> s <br /> y;� r •, v '^}`' `= ,rr.r , ,, ti�:;w' :'r `" {Arrr {r '�=r. •� �.rr`.r .irv<r. rrr. `i.,.'.,. <br /> Blaine Tech Services, Inc �iient Project ID She�1 $tocktori 970822-.14+ <br /> 1680 Rogers Ave Matrix Liquid <br /> ¢San Jose, CA 95112 <br /> #`Attention Fran Thie Work Order# 970BD83-03 Reported Sep 8, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> _ OC_Batch# GC08_28976TE_X02A GCO82897BTEX02A -GCO82897BTEX02A GC082897BTEX02A GCO82897BTEX02A <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. Moraftab A.Miraftab <br /> MS/MSD # 9708C7104 9708107104 970807104 970807104 9708C7104 <br /> Sample Conc N D N D N D N D N D <br /> Prepared Date 8/28/97 8/28/97 8/28/97 8/28/97 8/28/97 <br /> Analyzed Date 8/28/97 8/28/97 8/28/97 8/28/97 8/28/97 <br /> Instrument I D # GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc. Spiked 10pg/L 10pg/L 10pg/L 30pg/L 60pg/L <br /> Result: 71 64 69 19 50 <br /> MS % Recovery. 71 64 69 63 83 <br /> Dup. Result: 11 98 10 3o 72 <br /> MSD % Recov 110 98 100 100 120 <br /> RPD 43 42 37 45 36 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> �} } ry ♦..w v♦ K i r v ti r M1 r ♦ ♦ }v r v <br /> LCS# BLK082897 BLK082897 BLK082897 -- - - -- —BLK082897 BLK082897-- <br /> Prepared Date 8/28/97 �- ---- 8/28/97 -- - - 8/28/97 - - 8/28/97 8/28/97 <br /> Analyzed Date 8/28/97 8/28/97 8/28/97 8/28/97 8/28/97 <br /> Instrument I D #. GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc. Spiked- 10pg/L 10pg/L 10pg/L 30pg/L 60pg/L <br /> LCS Result 10 99 10 31 66 <br /> LCS % Recov.: 100 99 100 103 110 <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 /> S EQUOIA ANALYTICAL 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 <br /> the recovery of analytes from the matrix spike does not fall within specifoed control limits due to matrix <br /> interference,the LCS recovery Is to be used to validate the batch <br /> egP n ` <br /> of t Manager MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9708D38 BLA <2> <br />