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680 Chesapeake Drive Redwood Ciry CA 94063 (650)364-9600 FAX(650)364-9233 - <br /> Sequoia 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> %07 Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos, CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2433/990217-P1 <br /> 1580 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Christine LiVlle Work Order# 9902842 01 Reported Mar 8, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Totai Recoverable <br /> Petroleum Hydrocarbons <br /> QC Batch# SP0226995520EXA <br /> Anally Method SM 5520BF <br /> Prep Method SM 5520BF <br /> Analyst H Olonan <br /> BS/BSD # SLK022699 <br /> Sample Conc N D <br /> Prepared Date 2/26/99 <br /> Analyzed Date 3/3/99 <br /> Instrument I D # MANUAL <br /> Conc Spiked 10 mg/L <br /> Result 87 <br /> MS % Recovery 87 <br /> Dup Result 80 <br /> MSD % Recov 80 <br /> RPD 84 <br /> RPD Limit 0-30 <br /> LCS # <br /> Prepared Date <br /> Analyzed Date <br /> Instrument I D # <br /> Conc Spiked <br /> LCS Result <br /> LCS % Recov <br /> 60 140 <br /> LCS 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 TICAL 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 /> Mel Mei S <br /> Project Ma ager **MS=Matrix Spike MSD=MS Duplicate, RPD=Relative% Difference 9902842 BLA <1> <br />