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J <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (4 15) 364 9600 FAX (415) 364 9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> a-) Analytical 819 Striker Avenue Suile 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-4183/960222-L1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9602D89-03 Reported Feb 27, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Phenol 2-Chlorophenol 1,4 Dichloro N-Nitroso-Di- <br /> benzene N-propylamine <br /> QC Batch# MS0222968270EXA MS0222968270EXA MS0222968270EXA MS0222958270EXA <br /> Analy Method EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3510 EPA3510 EPA3510 EPA3510 <br /> Analyst B Pitamah B Pitamah B Pitamah B Pitamah <br /> MS/MSD # BLK022296 BLKOM96 BLK022296 BLK022296 <br /> Sample Conc N D N D ND N D <br /> Prepared Date 2/22/96 2/22/96 2/22/96 2/22/96 <br /> Analyzed Date 2/22/96 2/22/96 2/22/96 2/22/96 <br /> Instrument I D # F4 F4 F4 F4 <br /> Conic Spiked 200ug/L 200 pg/L 200pg/L 200pg/L <br /> Result 81 150 140 160 <br /> MS % Recovery 41 75 70 90 <br /> Dup Result 86 150 140 180 <br /> MSD % Recov 43 75 70 90 <br /> RPD 60 00 00 00 <br /> RPD Limit 0-50 0-50 0-50 0-50 <br /> LCS # - - <br /> Prepared Date- - - <br /> Analyzed Date - <br /> Instrument I D #. - - <br /> Conc Spiked - - - <br /> LCS Result* - <br /> LCS %Recov .. - - - - <br /> LCS 15-115 30.120 30-120 30-120 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,Interferent-tree matrix that is analyzed using the same reagents, <br /> SE IA NALYTICAL 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 /> P y nner **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference <br /> Project Manager Page 1 of 3 9602D89 BLA <4> <br />