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tt Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> �w���rVi 404 Iii Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Iwo Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 woo <br /> PacifiC Environmental Group Client Project ID 320-1591A/9-1452, Main St <br /> 2025 Gateway Place, Suite 440 Matrix SOLID <br /> San Jose, CA 95110 <br /> Attention R DeJung Work Order# 9601762 11-28 Reported Jan 26, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch# GC011796BTD(EXB GC011796BTEXEXB GC011796BTEXEXB GC011796BTEXEXB <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst R Geckler R Geckler R Geckler R Geckler <br /> MS/MSD# 960131415 960131415 960131415 960131415 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 1/17/96 1/17/96 1/17/96 1/17/96 <br /> Analyzed Date 1/17/96 1/17/96 1/17/96 1/17/96 <br /> Instrument I.D# GCHP1 GCHP1 GCHP1 GCHP1 <br /> Conc Spiked 0 20 mg/Kg 0 20 mg/Kg 0 20 mg/Kg 0 60 mg/Kg <br /> Result 018 019 019 057 <br /> M$'%Recovery 90 95 95 95 <br /> Dup Result 018 018 018 054 <br /> MSD % Recov 90 90 90 90 <br /> RPD 00 54 54 54 <br /> RPD Limit 0-50 0.50 0-50 0-50 <br /> LCS# BLK011796 BLK011796 BLK011796 BLK011796 <br /> Prepared Date 1/17/96 1/17/96 1/17/96 1/17/96 <br /> Analyzed Date 1/17/96 1/17/96 1/17/96 1/17/96 <br /> Instrument I D# GCHP1 GCHP1 GCHP1 GCHP1 <br /> Conc Spiked 0 20 mg/Kg 0 20 mg/Kg 0 20 mg/Kg 0 60 mg/Kg <br /> LCS Result 019 020 020 059 <br /> LCS % Recov 95 100 100 98 <br /> LCS <br /> Control Limits 55-145 47-149 47-155 56-140 <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> 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 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 /> Fw''zBrucle Fletcher <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9601762 PPP <2n <br /> ta <br />