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Sequoia 680 Chesapeake Dnve Redwood Cty CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wigct Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> Iwo Analytical 819 Striker Avenue Suit, 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Pacific Environmental Group Client Project ID 911-007 1A/5417, Manteca <br /> 2025 Gateway Place, Suite 440 Matrix SOLID <br /> San Jose, CA 95110 <br /> Attention Joe Muzzlo Work Order# 9801861 01-07 Reported Jan 30, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 11-Dlchloroethene Trichloroethene Benzene Toluene Chloro- <br /> benzene <br /> QC Batch# MS0120988240EM MS0120988240EXA MS0120988240EXA MS0120988240EXA MS0120986240EXA <br /> Analy Method EPA 8240 EPA 8240 EPA 8240 EPA 8240 EPA 8240 <br /> Prep Method <br /> Analyst Duong/Zhu Duong/Zhu Duong/Zhu Duong/Zhu Duong/Zhu <br /> MS/MSD #- 980178901 980178901 980178901 980178901 980178901 <br /> Sample Cone N D N D N D N D N D <br /> Prepared Date 1/20/98 1/20/98 1/20/98 1/20/98 1/20/98 <br /> Analyzed Date 1/20-21/98 1/20-21/98 1/20-21/98 1/2021/98 1/20-21/98 <br /> Instrument I D # F2 F2 F2 F2 F2 <br /> Cone Spiked 2500ug/Kg 2500 ug/Kg 2500 ug/Kg 2500 ug/Kg 2500ug/Kg <br /> Result 2000 2300 2500 2400 2400 <br /> MS % Recovery 80 92 100 96 96 <br />• Dup Result 2000 2300 2500 2400 2400 <br /> MSD % Recov 80 92 100 95 96 <br /> RPD 00 00 00 00 00 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS # LCS012198 LCS012198 LCS012198 LCS012198 LCS012198 <br /> Prepared Date 1/21/96 1/21/98 1/21/98 1/21/98 1/21/98 <br /> Analyzed Date 1/21/98 1/21/98 1/21/98 1/21/98 1/21/98 <br /> Instrument I D # H6 F2 F2 F2 F2 <br /> Cone Spiked 2500 ug/Kg 2500 pg/Kg 2500ug/Kg 2500 u9/Kg 2500ug/Kg <br /> LCS Result 2400 2300 2300 2300 2300 <br /> LCS % Recov 96 92 92 92 92 <br /> -- 140 60-140 60-140 60-140 60-140 <br /> LCS 65-135 70-130 70-130 70-130 70-130 <br /> Control Limits <br /> Please Note <br /> The!_CS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SEQUOIA 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 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 /> Tod Granleher **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative %Difference <br /> Project Manager 9801861 PPP c2> <br />