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-1 ,I <br /> . a— <br /> Sequoia <br /> 680 Chesapeake Dave Redwood Ctty,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 H 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 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033/960619-Tl <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9606B93-01 Reported Jul 1, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,2,4-Trichioro 4-Chloro-3 Acenaphthene 4-Nitrophenol <br /> benzene Methylphenol <br /> QC Batch# MS0620968270EXA MS0620968270EXA MS0620968270EXA MS0620968270EXA <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# BLK062096 BLK062096 BLK062096 BLK062096 <br /> Sample Cone N D N D N D N D <br /> Prepared Date 6/20/96 6/20/96 6/20/96 6/20/96 <br /> Analyzed Date 6/21/96 6/21/96 6/21/96 6/21/96 <br /> Instrument I D# HP5972 HP5972 HP5972 HP5972 <br /> Cone. Spiked. Haug/L 200 jig/L 200 jig/L 20Dug/L <br /> Result 130 130 130 49 <br />. MS % Recovery 65 65 65 25 <br /> Dup Result 130 140 130 53 <br /> MSD % Recov 65 70 65 27 <br /> RPD 00 74 00 78 <br /> RPD Limit 0-18 0.20 D-18 0-47 <br /> LCS# <br /> Prepared Date - - - - <br /> Analyzed Date - - - <br /> Instrument l.D # - - <br /> Conc Spiked - - <br /> LCS Result - - <br /> LCS %Recov.: - - <br /> MgTm <br /> LCS 39-98 23-97 46-118 10 to 80 <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 /> 0 Yoligeyt <br /> A 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 recovery is to be used to validate the batch <br /> ennerMS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference <br /> anager Page 2 of 3 9606693 BLA <5� <br />