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r <br /> j Sequoia 6130 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX (650)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 01 OD <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033 /971117-M2 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thle Work Order# 9711 C66 -01 Reported Dec 10, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Total Recoverable <br /> Petroleum Hydrocarbons <br /> QC Batch# IN112097552000A <br /> Analy Method SM 5520BF <br /> Prep Method N A <br /> Analyst P Cheung <br /> MS/MSD # BLK112097 <br /> Sample Cone N D <br /> Prepared Date 11/20/97 <br /> Analyzed Date 11/21/97 <br /> Instrument I D # MANUAL <br /> Cone Spiked 10 mg/L <br /> Result 82 <br /> BS % Recovery 82 <br /> iDup Result 76 <br /> BSD % Recov 76 <br /> RPD 76 <br /> RPD Limit 0-30 <br /> LCS#: LCS112497 <br /> Prepared Date 11/24/97 <br /> Analyzed Date. tt/25/97 <br /> Instrument 1 D # MANUAL <br /> Cone Spiked- 10 mg/L <br /> LCS Result 12 <br /> LCS % Recov • 120 - <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 /> !JSEANALYTICAL 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 tomatrix <br /> e interference,the LCS recovery is to be used to validate the batchManager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9711 C66 BLA <1> <br />