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r <br /> Sequoia 680 Chesapeake Dnve 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 /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033 /961125-A1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9611 H98-01 Reported Dec 11, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: 1,1-Dichloro- Trichloro Chloro- <br /> ethene ethene Benzene <br /> QC Batch#: GC120496W1008A GC120496801008A GC120496801008A <br /> Analy Method: EPA 8010 EPA 8010 EPA 6010 <br /> Prep Method- EPA 5030 EPA 5030 EPA 5030 <br /> Analyst E Cunanan E Cunanan E Cunanan <br /> M S/MSD# 9611D9806 9611 D98% 9611 D9806 <br /> Sample Cone N D N D N D <br /> Prepared Date 12/3/96 12/3/96 12/3/96 <br /> Analyzed Date 12/4/96 12/4/96 12/4/96 <br /> Instrument I D # GCHP8 GCHP8 GCHP8 <br /> Cone Spiked 25pg/L 25pg/L 25ug/L <br /> Result 24 22 22 <br /> MS % Recovery 96 88 68 <br /> Dup Result 23 22 23 <br /> MSD % Recov 92 86 92 <br /> RPD 43 00 44 <br /> RPD Limit. 0-25 0-25 025 <br /> LCS#' BLK120496 SLK120496 BLK120496 <br /> Prepared Date 12/4/96 12/4/96 12/4/96 <br /> Analyzed Date 12/4/96 12/4/96 12/4/96 <br /> Instrument I D # GCHP8 GCHP8 GCHP8 <br /> Cone Spiked 251rg/L 25Ng/L 25,ug/L <br /> LCS Result 25 22 22 <br /> LCS %Recov 100 88 88 <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 /> E IJOIianager <br /> LYTICAL 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 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 /> P gy **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference <br /> P oject 9611H98 BLA <6> <br />