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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 /> 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 /960619-T1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9606893-01 Reported Jul 1, 1996' <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,1-Dichloro- Tnchloro- Chloro- <br /> ethene ethene benzene <br /> GIC Batch# GC062496801015A GCO62496801015A GC06249M1015A <br /> Analy Method- EPA 8010 EPA 8010 EPA 8010 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 <br /> Analyst R Vincent R Vincent R Vincent <br /> MS/MSD# 960BA7303 9606A7303 9606A7303 <br /> Sample Conc: N D N D N D <br /> Prepared Date- 6/24/96 6/24/96 6/24/96 <br /> Analyzed Date 6/24/96 6/24/96 6/24/96 <br /> Instrument I D # GCHP15 GCHP15 GCHP15 <br /> Conc Spiked 25 pg/L 25 pg/L. 25 Ng/L <br /> Result 24 24 25 <br /> MS %Recovery 96 96 100 <br /> Dup Result 27 24 24 <br /> MSD %Recov 108 96 96 <br /> RPD 12 00 41 <br /> RPD Limit 0-25 0-25 0-25 <br /> LCS# BLK062596 BLK062596 BLK062596 <br /> Prepared Date 6/25/96 6/25/96 6/25/96 <br /> Analyzed Date 6/25/96 6/25/96 6/25/96 <br /> Instrument I D # GCHP15 GCHP15 GCHP15 <br /> Conc Spiked 25pg/L 25pg/L 25Mg/L <br /> LCS Result 27 18 22 <br /> LCS%Recov 108 72 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 sampie of known,interferent-free matrix that is analyzed using the same reagents, <br /> S U A ALYTICAL 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 /> e gy n ** Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> P olect Manager 9606693 BLA 43> <br />