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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> ITN404 N Wiget Lane Walnut Creek CA 94598 (9Z5)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos, CA 94070-4111 (650)232 9600 FAX(650)232-9612 <br /> Blaine Tech Services, Inc Client Project ID SheA, 4445 Pershing,-Stockton <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9902697 -01-06 Reported Mar 2, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes BTEX as TPH <br /> Benzene <br /> OC Batch#- GCO22299802004A GCO22299802004A GCO22299802004A GCO22299802004A GCO22299802004A <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# 9021580 9021580 9021580 9021580 9021580 <br /> Sample Cone . N D N D N D N D N D <br /> Prepared Date. 2/22/99 2/22/99 2/22/99 2/22/99 2/22/99 <br /> Analyzed Date. 2/22/99 2/22/99 2/22/99 2/22/99 2/22/99 <br /> Instrument 1 D #- HP4 HP4 HP4 HP4 HP4 <br /> Cone Spiked 20 ug/L 20 ug/L 20 ug/L 60 ug/L 340 ug/L <br /> Result 20 17 18 61 330 <br /> MS% Recovery 100 85 90 102 97 <br /> iDup. Result 21 17 18 61 320 <br /> MSD % Recov 105 85 90 102 94 <br /> RPD 49 00 00 00 31 <br /> RPD Limit 0-20 0-20 0-20 0-20 0-50 <br /> LCS# 4LCS022299 4LC5022299 4LCS022299 41-CS02M9 4LCS022299 <br /> Prepared Date 2/22/99 2/22/99 2/22/99 2/22/99 2/22/99 <br /> Analyzed Date 2/22/99 2/22/99 2/22/99 2/22/99 2/22/99 <br /> Instrument I D # HP4 HP4 HP4 HP4 HP4 <br /> Cone Spiked 20 ug/L 20ug/L 20ug/L 60 Pg/1- 340 ug/L <br /> LCS Result 20 16 17 59 310 <br /> LCS % Recov 100 80 85 98 91 <br /> MS/05 <br /> LCS 70-130 70-130 70-130 70-130 50-150 <br /> Control Limits <br /> Please Note <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 /> t <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure H <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 /> nKimy <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPO=Relative%Difference 9902697 BLA <1> <br />