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SEQUOIA ANALYTICAL <br /> 1900 Biifes Avenue- SStte 610 * C,8 ncotd,California 94520 <br /> 1510}6Ej6-9066 <br /> Client PrOfect ID: Unocal#6015,Lodi,641 E Ketileman L3ne <br /> Kaprealian Engineering,Inc. <br /> P.O.Box 896 Reported: Sep 19, 1991 <br /> Benicia,CA 94510 tUf3ifi20 68 <br /> Attention: Mardo Kaprealian,P.E. QC Sample Group: <br /> QUALITY CONTROL DATA REPORT <br /> SURROGATE <br /> E <br /> EPA EPA EPA PA EPA EPA 8615/8320 <br /> EPA 6015 8420 8015/B020 8015/BD:O 8015/802D B615J8G20 <br /> J,Fontecha 8 Fontecha J.Fontecha J.Fontecha J.Fonlecha J.Fantecria <br /> Method: eD1s/6az6 J. PPm ppm PPM PPM PPm <br /> Analyst: J.Fontecha ppm <br /> Reporting Units: PPM Sep B, 1991 Sep 8, 1991 Sep 8. 5991 Sep 1991 $eta$1668 t <br /> Date Analyzed: Sep B. 1991 Sep 6, 1661 <br /> Sample#: 106-1662 <br /> 108-1663 1 D8-1664 143-1665 108 16x6 10B.1667 <br /> Surrogate 100 100 100 <br /> 100 9s 9s <br /> °k Recovery: 1[}0 <br /> %Recavery� Conc.of M.S.-Conc.of Sample <br /> x i40 <br /> SEQUOIA ANALYTICAL Spike Conc.Added <br /> /( Relative%Difference. Conc,of i.4.S. Canc.a <br /> 2 <br /> 1CiaCc.of Ed.S.+ Conc.of fJ 5,0.)/ 1081620.KE1 -c16> <br /> Belinda C.Vega <br /> Laboratory Director <br />