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Sequoia 680 Chesapeake Dnve 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 /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> r <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# 9508893-01 Reported Aug 25, 1995 <br /> t r v <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 2,4-Dlnitro- Pentachloro- Pyrene <br /> toluene phenol <br /> GC Batch# MS0816958270EXZ M50816958270EXZ MS0816958270EXZ <br /> Analy Method: EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3520 EPA 3520 EPA 3520 <br /> Analyst B Pitamah B Pitamah B Pitamah <br /> MS/MSD # 950893503 950893503 950893503 <br /> Sample Conc: N D N D N D <br /> Prepared Date 8/16/95 8/16/95 6/16/95 <br /> Analyzed Date: 8/17/95 8/17/95 8/17/95 <br /> Instrument I D #: F4 F4 F4 <br /> Conc Spiked 100Ng/L 100pg/L 100N9/L <br /> Result, so 94 63 <br /> MS % Recovery. so 90 63 <br /> Dup Result 75 85 65 <br /> MSD % Recov 75 85 65 <br /> RPD. 65 57 31 <br /> RPD Limit 0-50 0-50 0-50 <br /> LCS#- BLK081695 BLK081695 BLK081695 <br /> Prepared Date. 8/16/95 8/16/95 8/16/95 <br /> Analyzed Date- 8/17/95 8/17/95 8/17/95 <br /> Instrument I D.#. F4 F4 F4 <br /> Conc Spiked- 100 pg/L 100 jig/L 100 jig/L <br /> LCS Result- 12 11 22 <br /> LCS% Recov.. 12 11 22 <br /> LCS 39-139 14-176 52-115 <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 /> �E lA YTICAL 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 /> g enner "*MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%oitference <br /> Pro ect Manager Page 3 of 3 9505693 BLA <9> <br />