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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 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 DO <br /> 4 ,,ryto <br /> BlairieATecti$etvices, Inc Client Project IDY chevron 9-863 970107 <br /> 970107-Z1 " <br /> ';1680 Rogers Avenue Matrix Liquid <br /> San Jose, CA 95112 <br /> ,Attention Fran Thie Work Order# 9701244-01 Reported Jan 16, 1997. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Total Recoverable <br /> Petroleum Hydrocarb <br /> OC Batch# OP0110975520PXA <br /> Analy. Method: SM 552OBF <br /> Prep Method PPA 3510 <br /> Analyst: J Aquino <br /> MS/MSD #: BLK011097 <br /> Sample Conc . N D <br /> Prepared Date: 1/10/97 <br /> Analyzed Date 1/13/97 <br /> instrument I D #: MANUAL <br /> Conc. Spiked: 10 mg/L <br /> Result: 7-3 <br /> MS %Recovery 73 <br /> Dup Result: 74 <br /> MSD%Recov 74 <br /> RPD: 14 <br /> RFD Limit 0-30 <br /> v <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 /> UOI 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 the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recoveryis to be used to validate the batch <br /> Pe gy Pen <br /> J ject Manager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9701244 BLA <2> <br />