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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> (D— 404 N Wigct Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services,~Inc Client Project ID Chevron 9-8264/970207-H2 <br /> 1680 Rogers Avenue Matrix Liquid n <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9702520 -01 Reported Feb 26, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. 1,1-Dichloro- Tnchloro- Chloro- <br /> ethene ethene Benzene <br /> QC Batch# GCO21397801008A GCO21397801008A GCO21397801008A <br /> Analy Method: EPA8010 EPA 8010 EPA 8010 <br /> Prep Method' EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. J Minkel J Minkel J Minkel <br /> MS/MSD #- 970243801 970243801 970243801 <br /> Sample Conc : ND N D ND <br /> Prepared Date: 2/13/97 2/13/97 2/13/97 <br /> Analyzed Date: 2/13/97 2/13/97 2/13/97 <br /> Instrument I D #: GCHP08 GCHP08 GCHP08 <br /> Conc Spiked: 25ug/L 25yg/L 25,ug/L <br /> Result- 21 21 22 <br /> MS %Recovery: 84 64 88 <br /> Dup Result: 22 21 22 <br /> MSD % Recov 88 84 88 <br /> RPD. 4 7 00 0 0 <br /> RPD Limit 0.25 0-25 0-25 <br /> LCS #. BLK021897 BLK021897 BLK021897 <br /> Prepared Date. 2/18/97 2/18/97 2/18/97 <br /> Analyzed Date 2/18/97 2/18/97 2/18/97 <br /> Instrument I D #: GCHP08 GCHP08 GCHP08 <br /> Conc Spiked: 25lig/L 25ug/L 25frg/L <br /> LCS Result: 24 24 25 <br /> LCS%Recov : 96 96 100 <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 /> SE 01 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 /> f interference,the LCS recovery is to be used to validate the batch <br /> Pe gy P MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference <br /> Pr a anager 9702520 BLA c7> <br />