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Sequoia680 Chesapeake Drive Redwood CaM CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services:Inc Client Prolecf ID ' Chevron 9-1848/970826-T2 v <br /> {3680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 970SF78-02 Reported Sep 11, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Anaiyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch# GG090397BTEX02A GCO90397BTEX02A GC090397BTEX02A GCO90397BTEX02A GCO90397BTEX02A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. K Miraftab X Miraftab A Miraftab A. Miraftab A Miraftab <br /> MS/MSD # 970804806 970804806 970SC4806 970SC4806 970804806 <br /> Sample Cone ND N D N D ND ND <br /> Prepared Date 9/3/97 9/3/97 9/3/97 9/3/97 9/3/97 <br /> Analyzed Date- 9/3/97 9/3/97 9/3/97 9/3/97 9/3/97 <br /> Instrument I D # GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked 10ug/L 10119/L 10ug/L 30Ng/L 60ug/L <br /> Result 55 58 58 16 34 <br /> MS %Recovery. 55 58 58 53 57 <br /> Dup Result 10 96 98 29 64 <br /> MSD %Recov 100 96 98 97 107 <br /> RPD. 58 49 51 58 61 <br /> RPD Limit 0-25 0.25 0-25 0-25 0-25 <br /> LCS #. BLK090397 SLK090397 BLK090397 BLK090397 BLK090397 <br /> Prepared Date 9/3/97 9/3/97 9/3/97 9/3/97 93/97 <br /> Analyzed Date 9/3/97 9/3/97 9/3/97 9/3/97 9/3/-97 <br /> Instrument I.D #- GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone Spiked' 1011g/L 10ug/L 10ug/L 30u9/L 60ug/L <br /> LCS Result. 9 3 90 91 27 59 <br /> LCS %Recov 93 90 91 90 98 <br /> MSJUSID 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70.130 70.130 70-130 7D-130 <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 /> QU ALYTICAL 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 N <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 /> 3eggy neer <br /> t Manager *'MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9708F78 BLA <2a <br />