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r <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> r 404 N Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> � CSd� 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Anal1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project ID $hell, 341 East Main St , Ripon <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9902A43-01 Reported Mar 5, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes BTEXasTPH <br /> Benzene <br /> OC Batch# GCO30299802005A GCO30299802005A GCO30299802005A GCO30299802005A GCO30299802005A <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 C Westwater C Westwater C Westwater C Westwater C Westwater <br /> MS/MSD#: 9021988 9021988 9021988 9021988 9021988 <br /> Sample Cone N D N D N D N D N D <br /> Prepared Date 3/2/99 3/2/99 3/2/99 3/2/99 3/2/99 <br /> Analyzed Date. 3/2/99 3/2/99 3/2/99 3/2/99 3/2/99 <br /> Instrument I D #- HP5 HP5 HP5 HP5 HP5 <br /> Cone Spiked 20ug/L 20ug/L 20ug/L 60ug/L 280,ug/L <br /> Result: 18 21 20 64 280 <br /> IVIS % Recovery 90 105 100 107 100 <br /> Dup Result 17 21 19 62 320 <br /> MSD %Recov : 85 105 95 103 114 <br /> RPD 57 00 51 32 133 <br /> RPD Limit: 0-20 0-20 0-20 0-20 0-50 <br /> LCS# LCS030299 LCS030299 LC8030299 LCS030299 LCS030299 <br /> Prepared Date 3/2/99 3/2/99 3/2/99 3/2/99 3/2/99 <br /> Analyzed Date 3/2/99 3/2/99 3/2/99 3/2/99 3/2/99 <br /> Instrument LD# HP5 HP5 HP5 HP5 HP5 <br /> Cone Spiked 20ug/L 20ug/L 20ug/L 60ug/L 280 ug/L <br /> LCS Result 18 19 19 59 250 <br /> LCS %Recov 90 95 95 98 89 <br /> LCS 70-130 70-130 70.130 70-130 50-150 <br /> Control Limits <br /> t'iease NOM <br /> SEQUOIA ANALYTICAL The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents <br /> Elap#1271 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 /> e Grey <br /> Project onager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative 96 Difference 9902A43 BILA <2> <br />