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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wtget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)989 9673 <br /> '+ Ci)_ Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-8632 /970605-Ki <br /> 1680 Rogers Avenue Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9706358-01-04 Reported Jun 20, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> OC Batch# GCD610970H13PEXz <br /> Analy Method EPA 8015M <br /> Prep Method EPA 3520 <br /> Analyst G Fish <br /> MS/MSD#. 970637406 <br /> Sample Conc . 74 <br /> Prepared Date. 6/10/97 <br /> Analyzed Date: 6/12/97 <br /> Instrument I D #: GCHP4 <br /> Conic Spiked. 1000 jig/L <br /> Result: 850 <br /> iMS % Recovery: 78 <br /> Dup. Result 74 <br /> MSD % Recov 67 <br /> RPD. 14 <br /> RPD Limit 0-50 <br /> LCS# BLK061097 <br /> Prepared Date 6/10/97 <br /> Analyzed Date 6/12/97 <br /> Instrument I.D.#. GCHP4 <br /> Conc. Spiked 1000Ng/L <br /> LCS Result- 800 <br /> LCS % Recov . 80 <br /> 50-150 <br /> LCS 60-140 <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 /> EQIJOIA A ALYTICA 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 /> terference,the LCS recovery is to be used to validate the batch <br /> Peggy Penner <br /> Project Manager "MS= <br /> Spike, <br /> 'MS <br /> Duplicate,RPD=Relative%Difference 9706358 BLA <4> <br />