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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 /> ,!D- Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(9 16)92 1-0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-8632/960207-Z4 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9602583-01 Reported Feb 27, 1996+ <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 2,4-Dinitro- Pentachloro- Pyrene <br /> toluene phenol <br /> OC Batch#. M50208968270EXZ MS0208968270EXZ MS0208968270EXZ <br /> Analy. Method: EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3510 EPA 3510 EPA 3510 <br /> Analyst B Pitamah B Pdamah B Pitamah <br /> MS/MSD# - - <br /> Sample Conic - - <br /> Prepared Date. - - <br /> Analyzed Date: - - <br /> Instrument I D #. - - - <br /> Conc. Spiked - - <br /> Result - - <br /> MS% Recovery - - <br /> Dup Result- - - <br /> MSD % Recov • - <br /> RPD - - - <br /> RPD Limit 0-50 0-50 0-50 <br /> ..r . r <br /> LCS #. BLK020896 BLK020896 BLK020896 <br /> Prepared Date 2/8/96 2/8/96 2/8/96 <br /> Analyzed Date 2/13/96 2/13/96 2/13/96 <br /> Instrument I D # F4 R F4 <br /> Conc Spiked. 200 pg/L 200pg/L 200 pg/L <br /> LCS Result 130 150 140 <br /> LCS % Recov 65 75 70 <br /> LCS 40-130 30-110 55-115 <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 /> SE I 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 H <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 P **MS-Matnx Spike, MSD-MS Duplicate,RPD=Relative 96 Difference <br /> P jest Manager Page 3 of 3 9602583 BLA <10> <br />