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(1) Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> i' Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> rl <br /> Smith Environmental Client Project ID 21160, 94-331 01-06 <br /> 1260 Graphics Drive Matrix Liquid <br /> Modesto, CA 95351-1502 <br /> Attention Jeanne Homsey Work Order# 9608J33 01, 02 Reported Sep 13, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,1-Dichloro- Tnchloro- Chloro- <br /> ethene ethene Benzene <br /> QC Batch# GCO91196801009A GCO91196801009A GCO91196801009A <br /> Analy Method EPA 8010 EPAS010 EPA8010 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 <br /> Analyst R Bou-Salman R Bou-Salman R Bou-Salman <br /> MS/MSD# 9608J3301 960BJ3301 960BJ3301 <br /> Sample Cone N D N D N D <br /> Prepared Date 9/11/96 9/11/96 9/11/96 <br /> Analyzed Date 9/11/96 9/11/96 9/11/96 <br /> Instrument I D # GCHP9 GCHP9 GCHP9 <br /> Cone Spiked 25 ug/L 25 ug/L 25 ug/L <br /> Dilution Factor 1 1 1 <br /> Result 24 22 25 <br /> MS % Recovery 96 88 100 <br />• Dup Result 23 22 24 <br /> MSD % Recov 92 88 96 <br /> RPD 43 00 41 <br /> RPD Limit 0-25 025 0-25 <br /> LCS # BLK091196 BLK091196 BLK091196 <br /> Prepared Date 9/11/96 9/11/96 9/11/96 <br /> Analyzed Date 9/11/96 9/11/96 9/11/96 <br /> Instrument I D # GCHP9 GCHP9 GCHP9 <br /> Cone Spiked 25ug/L 25ug/L 25ug/L <br /> LCS Result 25 22 25 <br /> LCS %Recov 100 88 100 <br /> 60-140 60-140 60-140 <br /> LCS 65-135 70-130 70-130 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANAL AL 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 /> V s A altls **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference <br /> Pr ject Manager 9608J33 SSS <2> <br />