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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 444 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 Ot04 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792 0342 <br /> rie <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033 /980521-L1 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9805E75-01 Reported Jun 9, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Total Recoverable <br /> Petroleum Hydrocarbons <br /> QC Batch# SP0529985520EXA <br /> Analy Method SM 5520BF <br /> Prep Method SM 5520BF <br /> Analyst H Olonan <br /> MS/MSD # BLK052998 <br /> Sample Conc N D <br /> Prepared Date 5/29/98 <br /> Analyzed Date 6/1/98 <br /> Instrument I D # MANUAL <br /> Conc Spiked 10 mg/L <br /> Result 74 <br /> 40S % Recovery 74 <br /> Dup. Result 79 <br /> MSD % Recov 79 <br /> HPD 65 <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 /> QUOIA ANALYTICAL 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 tate matrix spike does not fail within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> egory <br /> reject Manager **MS=Matrix Spike, MSD=MS Duplicate RPD=Relative%Difference 9805E75 BLA <7> <br />