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Sequoia 680 Chesapeake Dave 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 /> %J- F 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, 950815-H1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> 'Attention Jim Keller Work Order# 9508B93-01 Reported Aug 25, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Phenol 2-Chlorophenol 1,4-Dichloro N-Nitroso-Di <br /> benzene N-propylamine <br /> QC Batch#: MS0816958270IXZ MS0816958270EXZ MS0816968270EXZ MS0816958270EXZ <br /> Analy. Method- EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep. Method EPA 3520 EPA 3520 EPA 3520 EPA 3520 <br /> Analyst 8 Pitamah B Pitamah S Pitamah B Pitamah <br /> MS/MSD#` 950893503 950893503 950893503 950893503 <br /> Sample Conc.. N D N D N D N D <br /> Prepared Date 8/16/95 8/16/95 8/16/95 8/16/95 <br /> Analyzed Date 8/17/95 8/17/95 8/17/95 8/17/95 <br /> Instrument LD #. F4 F4 F4 F4 <br /> Conc Spiked 100pg/L 100 ug/L 100pg/L 100Ng/L <br /> Result. 90 89 79 90 <br /> �IVIS% Recovery. 90 89 79 90 <br /> Dup Result- 85 83 74 84 <br /> MSD%Recov : 85 83 74 84 <br /> RPD 57 70 65 69 <br /> RPD Limit 0.50 0-50 0-50 0-50 <br /> LCS#- BLK081695 BLK081695 BLK081695 BLK081695 <br /> Prepared Date 8/16/95 8/16/95 8/16/95 8/16/95 <br /> Analyzed Date. 8/17/95 8/17/95 8/17/95 8/17/95 <br /> Instrument LD #: F4 F4 F4 F4 <br /> Conc Spiked: 100 pg/L 100 Fig/L 100 Y9/L 100 pg/L <br /> LCS Result: 60 13 20 17 <br /> LCS% Recov.: 60 13 20 17 <br /> MS/MSD-- <br /> LCS 5-112 23-134 20-124 DL-230 <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 /> EPAAYTICAL preparation,acid 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 rnatrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> e **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> Project Manager Page 1 of 3 9508893 BLA c7> <br />