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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364'9233 r <br /> R 404 N Wiget lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510) 988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921-0100 <br /> 45. } <br /> r Blaine Tech Services,'I rih 'Ciierit Project ID Sliell'Stockton J 971069-G1 <br /> 1680 Rogers Ave Matrix Liquid { <br /> San Jose, CA 95112 <br /> r;Attention Fran Thie Work Order# 9710591 -01, 03-06, 08-09 Reported Oct 28, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> OC Batch# GC102097BTEX02A GC102097BTEX02A GG102097BTEX02A GC102097BTEX02A GC10209713TEX02A <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 #: 971073403 971073403 971073403 971073403 971073403 <br /> Sample Conc: N D N D N D N D N D <br /> Prepared Date: 10/20/97 10/20/97 10/20/97 10/20/97 10/20/97 <br /> Analyzed Date: 10/20/97 10/20/97 10/20/97 10/20/97 10/20/97 <br /> Instrument I D #: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc Spiked: 10Ng/L 10ug/L 10Frg/L 30pg/L 60,ug/L <br /> Result: 10 9 7 9 8 30 60 <br /> MS % Recovery: 100 97 98 100 100 <br /> Dup. Result 10 9 8 9 9 30 62 <br /> MSD % Recov.• 100 98 99 100 103 <br /> RPD 00 10 10 00 33 <br /> =RPD Limit:-- –= 0-25 0-25— 0-25 0-25 0-25 — <br /> LCS #: BLK102097 BLK102097 BLK102097 BLK102097 BLK102097 <br /> Prepared Date: 10/20/97 10/20/97 10/20/97 10/20/97 10/20/97 <br /> Analyzed Date: 10/20/97 10/20/97 10/20/97 10/20/97 10/20/97 <br /> Instrument I D #: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc Spiked: long/L 10 jug/L 10 pg/L 30 ug/L 60 frg/L <br /> LCS Result 10 9 8 10 30 61 <br /> LCS %Recov.- 100 98 100 100 102 <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 1s analyzed using the same reagent <br /> S U ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of samp <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 specified control limits due to matrix <br /> interference,the LGS recovery is to be used to validate the batch <br /> P Penner <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative% Difference 9710591 BLA <1> <br />