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Sequoia680 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 Swte 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-8264 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thle Work Order # 9802909-01 Reported Feb 27, i 998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Phenol 2-Chlorophenol 14-Dichloro- N-Nitroso-Di <br /> benzene N-propylamine <br /> QC Batch# MS0213988270EXA MS0213988270EXA MS0213988270EXA M80213988270EXA <br /> Analy Method EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3510 EPA 3510 EPA 3510 EPA 3510 <br /> Analyst E Manuel E Manuel E Manuel E Manuel <br /> MS/MSD # 980271301 980271301 980271301 980271301 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 2/13/98 2/13/98 2/13/98 2/13/98 <br /> Analyzed Date 2/17/98 2/17/98 2/17/98 2/17/98 <br /> Instrument I D # F4 F4 F4 F4 <br /> Conc Spiked 200 yg/L 200 pg/L 200]ug/L 200 ug/L <br /> Result 71 119 95 155 <br /> M5 % Recovery 36 60 48 78 <br /> . <br /> Dup Result 64 116 94 145 <br /> MSD % Recov 32 58 47 73 <br /> RPD 10 26 11 67 <br /> RPD Limit 0-30 0-30 0-30 0-30 <br /> LCS # LCS021898 LCS021898 LCS021898 LCS021898 <br /> Prepared Date 2/18/98 2/18/98 2/18/98 2/18/98 <br /> Analyzed Date 2/18/98 2/18/98 2/18/98 2/18/98 <br /> Instrument I D # H5 H5 H5 H5 <br /> Conc Spiked 200 ug/L 200 yg/L 200 yg/L 200 ug/L <br /> LCS Result 67 129 132 120 <br /> LCS % Recov 34 70 66 60 <br /> LCS <br /> Control Limits 12-110 27 123 3697 41-116 <br /> Please Note <br /> The LCS is a control sample of known interferent-free matrix that is analyzed using the same reagents, <br /> QI <br /> N LYTICAL 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 /> Pe er *MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference <br /> Prolager Page 1 of 3 9802909 BLA <53 <br />