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• Sequoia680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N W�get Lane Walnut Creek CA 94.598 (510) 988 9600 FAX(510)988 9673 <br /> �till>� Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Shell Stockton /970905-Fl <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9709144-01-03 Reported Sep 10, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol <br /> QC Batch# GCO906971SHSHS13 <br /> Analy Method iSHS <br /> Prep Method HS <br /> Analyst T Tran <br /> MS/MSD# 9708133310 <br /> Sample Cone ND <br /> Prepared Date 9/6/97 <br /> Analyzed Date 9/6/97 <br /> Instrument I D # GCv1 <br /> Cone Spiked 8 0 mg/L <br /> Result 67 <br /> �S % Recovery 84 <br /> Dup Result 70 <br /> MSD % Recov. as <br /> RPD 44 <br /> RPD Limit 0-50 <br /> LCS # BLK090697 <br /> Prepared Date- 9/6/97 <br /> Analyzed Date 9/6/97 <br /> Instrument I D # GCw <br /> Cone Spiked 8 0 mg/L <br /> LCS Result 74 <br /> LCS % Recov 93 <br /> 50-150 <br /> LCS 50-150 <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 /> QI A ALYT[CAL 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 /> e99Y <br /> P t Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9709144 BLA <3> <br />